Fluid pressure regulator

FIELD: pipeline engineering.

SUBSTANCE: fluid pressure regulator comprises housing provided with a flange having a number of projections shaped into lugs. Each projection has at least one opening made for permitting receiving a fastening member. The regulator has valve provided with the seat, valve plate, valve rod connected with the plate, and valve guide member that locks the rod of the valve. The lever has the first end connected with the valve rod and second end connected with the diaphragm. The force is applied to the rod from the side of the lever in the direction virtually perpendicular to the longitudinal axis of the valve rod. The valve rod has stop member that arrests the valve rod and the plate against movement with respect to the seat of the valve.

EFFECT: enhanced reliability.

21 cl, 8 dwg

 

The present invention mainly relates to regulators, and more specifically to the downward pressure of the fluid regulator.

In controlling the transmission fluid in industrial processes, such as, for example, pipeline distribution systems for oil and gas, chemical processes and so on, it is often necessary to transfer technology the fluid under relatively high pressure through the sections of the distribution system or process requiring a large amount or high flow rate of process fluid. As technological fluids under high pressure moved through the distribution system or process, the pressure of the process fluid can be reduced in one or more locations in order to serve smaller volume of process fluid under a lower pressure in the subsystem, which is used or consumed by process fluid.

Lowering the pressure fluid regulators are typically used to reduce and control the pressure of process fluid. Basically, lowering the pressure of the fluid regulator provides restrictions through the valve, which is consistently in the channel for fluid flow. Thus, lowering the pressure of the fluid controller may control the SQL velocity of the fluid flow and/or pressure, provided in the lower flow outlet port of the regulator. Lowering the pressure of the fluid controllers are typically implemented using an auxiliary mechanism for the regulation of direct action.

Controllers with auxiliary control mechanism usually contain membrane supporting stage having a relatively small surface area. Membrane auxiliary stage usually responds to the output pressure of the controller, directing the second, or main, the control stage, which involves membrane having a relatively large surface area. Big membrane main level provides a large force necessary to actuate the dispenser controller.

Regulators direct action excluded subsidiary level, so that the output pressure of the fluid normally operates on a single, relatively large membrane, which is directly connected to the regulator valve. As a result, the regulator of direct action can be placed in a relatively compact body, with a relatively small mounting area.

Usually available a wide range of lower pressure fluid regulators, each of which may have different characteristics suitable for different applications. For example, step-down pressure regulator, before oznaczony for use in regulating the pressure of natural gas in the consumer object (for example, residential or commercial building or other secured transfer station, generally should be relatively accurate. High precision regulator is typically achieved by such a configuration controller that he had a high gain proportional band (i.e. high mechanical gain). To obtain a high gain proportional band can be modified by several factors. For example, the ratio of the area of a diaphragm of the regulator to the arm (i.e. the unit amount of movement of the membrane divided by the amount of movement of the stem and the valve caused by a single movement of the membrane) essentially controls the gain of the proportional band of the controller. Generally speaking, a large area of the membrane enables the creation of large forces at any given pressure drop through the regulator and, thus, enables a corresponding reduction in the relations of the lever. The decrease of the ratio of the lever results in a higher gain of the proportional band of the controller, which increases the accuracy with which the regulator can regulate the output pressure.

On the other hand, lowering the pressure fluid regulators, designed for use in regulating the distribution of liquefied petroleum (LP) gas, otnositelno compact, that facilitates the installation of these controls in confined spaces (for example, in reservoir caps). Accuracy is not so important for applications related to LPG, for applications related to natural gas. Thus, to minimize the mounting area of the regulators LPG you can use a smaller membrane. In addition, because of the decreasing pressure regulators used in applications related to LPG, often requires the regulation of relatively large pressure drops, lower the gain of the proportional band these regulators tends to reduce the instability problems that are common to these applications.

Thus, different operational requirements associated with different applications to lower blood pressure regulators, historically, are in conflict. The result of compromises in the required structures are different designs of controllers for different applications. For example, using a pressure regulator designed for use with natural gas, are usually unsuitable for use within the system with LPG because of the relatively large mounting area of the controller of natural gas. In addition, a relatively larger factor is silenia the proportional band of the controller natural gas exacerbates the problems of instability, usually associated with large pressure drops that occur frequently in applications with LPG. Also, because of their relatively low gain proportional band low pressure regulators for use with systems with LPG is usually not sufficiently accurate for use in systems with natural gas.

The objective of the invention is to provide a regulator of the fluid provides improved regulation of the movement of the stem and the valve relative to the valve seat. This enhanced regulation of the movement of the stem and the valve can be used to greatly reduce wear and/or damage to the sealing surfaces of the valve regulator Assembly.

According to one embodiments of the invention lowers the pressure of the fluid regulator includes a housing, a membrane located inside the housing, a valve located inside the housing and having a valve seat, the valve plate and the valve stem, the valve guide made for holding the valve stem in such a way that the sealing surface of the valve essentially coplanar the valve seat, a lever having a first end attached to the valve stem, and a second end attached to the membrane, and a lever attached to the shaft of the thus, the in order to apply a force to the rod in a direction that is essentially perpendicular to the longitudinal axis of the stem, the flange with the first radius forming the inner section of the flange, and a second radius greater than the first radius, which forms the mounting area of the controller of the fluid

when this flange contains a number of tabs which are spaced around the circumference so that the first and second sets of protrusions separated by the first circular gap, and the second and third set of protrusions separated by a second circular gap larger than the first circular gap, and each of the multiple protrusions includes at least one slot for accommodating fasteners so that the flange was made more than four holes. Each of the protrusions includes at least two holes. At least two holes associated with each of protrusions spaced around the circumference at the first traffic interval. The protrusions may have a shape of ears.

Preferably the rod further comprises a stopper made to limit the movement of the valve to the seat, and the protrusion and the first end of the lever includes a notch that is made to accommodate the ledge.

According to another one of the embodiments of the invention, the controller of the fluid includes a housing, a meme is wound, located inside the housing, a valve located inside the housing and having a valve seat, the valve plate and the valve stem, the valve guide made for holding the valve stem in such a way that the sealing surface of the valve essentially coplanar the valve seat, and a lever having a first end attached to the valve stem, and a second end attached to the membrane, with the first end attached to the valve stem in such a way as to apply a force to the rod in a direction that is essentially perpendicular to the longitudinal axis of the stem.

The lever is arranged to engage with the valve stem through the recess having a wall, which may be located at an angle, not perpendicular to the longitudinal axis of the valve stem.

Preferably, the stopper made in one piece with the valve stem.

According to another variant of the invention, the controller of the fluid includes a housing, a membrane located inside the housing, and a valve located inside the housing and having a valve seat, the valve plate and the valve stem in which the valve includes a stopper made to limit the movement of the valve to the valve seat, a lever having a first end attached to the valve stem, and a second end attached to the membrane, and the first end is resident to the valve stem so in order to apply a force to the rod in a direction that is essentially perpendicular to the longitudinal axis of the stem.

According to still another variant of the invention, the controller of the fluid includes a flange with a first radius, forming the inner section of the flange, and a second radius greater than the first radius, which forms the mounting area of the controller of the fluid at this flange contains a number of tabs which are spaced around the circumference, so that the first and second sets of protrusions separated by the first circular gap, and the second and third set of protrusions separated by a second circular gap larger than the first circular gap, each of the multiple intervals contains at least one hole, made to accommodate fasteners so that the flange was made more than four holes, the valve having a seat, a valve plate and a stem connected to the valve plate, the valve guide which holds the rod to hold the sealing surfaces of the valve by being in coplanar relation to the seat, a lever having a first end connected with the rod, and a second end connected with the diaphragm inside the regulator, and a lever attached to the shaft in such a way as to apply a force to the rod in a direction which is essentially perpendicular to the longitudinal axis of the rod, and stopper, made in one piece with the rod and to limit movement of the valve to the seat.

According to another variant of the invention, the controller of the fluid includes a valve Assembly having a valve stem and guide, and a lever coupled to the valve stem for application to the valve stem of the lateral load in the direction of the guide to control the friction between them.

The controller includes a flange made to accommodate at least five fasteners so that at least two circular interval have been associated, at least five fasteners.

Preferably, stopper, made in one piece with the rod, is responsible for regulating the extent to which the valve plate is moved toward the valve seat.

The controller further comprises a membrane having a size at which the regulator is made for regulating the pressure in at least two different types of fluid. However, at least two different types of fluid include natural gas and liquefied petroleum gas.

Figure 1 is a view in section of a known reducing the pressure of the fluid regulator of direct action.

Figure 2 is a view in section of a variant of the reduction of the pressure of the fluid regulator of direct action, which uses the stopper, made in one C is white with the valve stem of the regulator fluid medium.

Figure 3 is a partial view in section of another famous reducing the pressure of the fluid regulator of direct action.

4 is a partial view in section of a variant of the controller of the fluid, which uses the configuration of the lever, which provides a side load on the valve stem of the regulator fluid medium.

5 is a view in plan of the known configuration of the flange of the regulator fluid medium.

6 is a view in plan of another known configuration of the flange of the regulator fluid medium.

7 is a more detailed view in section, which shows the configuration of the flange of the regulator fluid, shown in Fig.6, which uses the membrane with the shoulder.

Fig is an example of the configuration of the flange of the regulator fluid, which provides a reduced mounting area and which can be used with flat gasket.

Figure 1 shows a view in section of a known reducing the pressure of the fluid regulator 100 of direct action. Decreasing the pressure of the fluid regulator 100 direct action, shown in figure 1, may, for example, be used to regulate the flow and/or pressure of natural gas. As shown in figure 1, the controller 100 has an inlet 102 for fluid medium which presents process fluid under a relatively high pressure, and the exhaust opened the E104 for the process fluid, the controller 100 of the fluid provides a process fluid medium under a lower regulated pressure. The controller 100 of a fluid medium contains the upper part 106 of the housing and the bottom housing 108, which are connected in the respective flange sections 110 and 112.

The membrane 114 is enclosed between the flange sections 110 and 112. The membrane 114 forms a cavity or chamber 116 regulation of the output pressure, which is sealed relative to the environment (e.g., atmospheric pressure), the environmental regulator 100 of the fluid, and which in normal operating conditions is sealed relative to the upper cavity or chamber 118. The membrane 114 may contain a circular coil section 120, as shown in figure 1, to provide essentially linear movement of the membrane 114 in response to changes in pressure on the membrane 114.

The controller 100 of a fluid medium contains a valve Assembly 122 having a saddle valve 124 with the channel 126, passing through it, which reports on the fluid inlet 102 to the fluid from the outlet 104 to the fluid. The valve Assembly 122 also includes a plate valve 128, which is connected with the rod 130 of the valve. Guide 132 holds the valve stem 130 of the valve so that the sealing surface 133 of the plate 128 of the valve remains essentially in koplan the Pnom respect to the valve seat 124, while the rod 130 and the plate 128 of the valve is made slidable along the longitudinal axis of the stem 130 of the valve.

The lever 134 is attached to the lower portion 108 of the housing through the axial rod 136. The first end 138 of the lever 134 is connected to a rod 130 of the valve, and the second end 140 of the lever 134 is connected to the membrane 114, as shown and described in more detail below. The lever 134 also includes a stopper 142, which is in contact with the end 144 of the rod 130 of the valve. As described in more detail below, the stopper 142 limits the rotation of the lever 134 counterclockwise around the rotary rod 136 and, thus, movement of the rod 130 and the plate 128 of the valve seat 124 of the valve.

During operation, the spring 146 moves the diaphragm 114 to the lower portion 108 of the housing, thereby pushing the second end 140 of the lever 134 down and turning the lever 134 in a clockwise direction around the turning rod 136. The lever 134 in a clockwise direction around the turning rod 136 provides the removal of the first end 138 of the lever 134 from seat 124 of the valve, thus pushing the rod 130 and the plate 128 of the valve from the seat 124 of the valve. In addition, the stopper 142 is not in contact with the end 144 of the rod 130 of the valve. When the plate 128 is separated or separated from the saddle valve 124, the channel 126 reports on the fluid inlet 102 to the fluid output chamber 116 of the control pressure and the outlet 104 to t the heap environment. Thus, the valve Assembly 122 is made to be in a normally open state.

While the fluid enters the inlet 102, passes through the channel 126 and into the chamber 116 of regulation of the output pressure, the pressure in the chamber 116 regulation of the output pressure and the outlet 104 increases. With increasing pressure in the chamber 116 regulation of the output pressure membrane 114 will move upward against the spring 146, and the second end 140 of the lever 134 to pass to the upper part 106 of the housing. This moves up the second end 140 of the lever 134 to rotate the lever 134 counterclockwise around the axis of the rod 136 and causes the first end 138 of the lever 134 to move along the longitudinal axis of the stem 130 of the valve seat 124 of the valve. Thus, the first end 138 of the lever 134 pushes the plate 128 of the valve seat 124 of the valve to increase the restriction of the fluid flow valve Assembly 122. The valve 122 is made so as to provide a relatively large change in velocity of the fluid flow with a relatively small change in the gap or separation between the plate 128 of the valve and seat 124 of the valve. As a result, the pressure in the outlet chamber 116 will strive to reach the point of equilibrium (for a given output pressure control), in which the membrane 114 is moved against the spring 146 in order to get the who to the second end 140 of the lever 134 to come to the appropriate fixed point or position inside the chamber 116 of the output pressure.

To prevent damage (e.g., indentations or other deformation of the sealing surface 133 of the plate 128 of the valve as a result of excessive pressure (such as terms of TVersity) in the chamber 116 of the output pressure, the stopper 142 is made to contact with the end 144 of the rod 130 of the valve to limit the rotation of lever 134 counterclockwise around the axis of the rod 136. This limitation of rotation serves to restrict movement of the rod 130 and the plate 128 of the valve along the longitudinal axis of the stem 130 of the valve, thereby limiting the amount of force with which the plate valve 128 may be directed to the saddle valve 124. The stopper 142 also provides the possibility of functioning of the pressure relief valve 150 if the output pressure in the chamber 116 exceeds the maximum limit.

As shown in figure 1, in the control point (i.e. at the point of equilibrium, in which the plate 128 is located near saddle valve 124) of the force exerted by the first end 138 of the lever 134 to the shaft 130 of the valve essentially parallel (e.g., coaxial) to the longitudinal axis of the stem 130 of the valve. In other words, from the first end 138 of the lever 134 is not applied no significant forces perpendicular to the longitudinal axis of the stem 130 of the valve (i.e. the stem 130 of the valve is not applied lateral load against the guide 132). As a result, the rod 130 of the valve and tar the LCA valve 128 can relatively freely move along the longitudinal axis of the stem 130 of the valve due to the very limited friction between the shaft 130 and the guide 132 of the valve. This freedom of longitudinal movement may be exacerbated by any backlash or clearance that may exist between the coupling of the first end 138 of the lever 134 and the rod 130. When working this freedom of movement along the longitudinal axis of the rod 130 may cause the oscillation of the rod 130 and the plate 128 of the valve (and thus the output pressure at the reference point, especially in applications requiring high pressure drop through the regulator 100 (for example, applications running LPG). Such fluctuations can lead to poor regulation of the output pressure and premature wear and/or failure of elements of the regulator, such as, for example, the plate 128 and the saddle valve 124.

An additional problem associated with controller 100 shown in figure 1, is that the stopper 142 is made in one piece with the lever 134. Unfortunately, the tolerances associated with the placement of the axial rod 136 (which is attached to the lower portion 108 of the body), the dimensions of the lever 134 and the stem 130 of the valve, can be superimposed. This imposition of tolerances can cause relatively large fluctuations in the amount of force with which the plate 128 of the valve is directed against the saddle valve 124 when the stopper 142 is in contact with the end 144 of the rod 130.

The addition of tolerances also can adversely affect performance (for example, the discharge pressure is AI) pressure reducing valve 150. In particular, changing the point at which the upper movement of the membrane 114 is limited by the stopper 142, changing the power of the pre-load applied by the spring 146 to the pressure reducing valve 150. For example, if the overlay tolerances such that the moving up of the membrane 114 stops close to the upper part 106 of the housing, the power of pre-load applied by the spring 146 to the membrane 114 and thus to the pressure reducing valve 150 increases. As a result, the pressure at which the pressure reducing valve 150 starts to open, increases. Of course, if the imposition of tolerances such that the moving up of the membrane 114 stops further from the upper part 106 of the housing, the pressure at which the pressure reducing valve starts to open, is reduced.

Figure 2 shows a view in section of a variant of the reduction of the pressure of the fluid regulator 200 direct action. The controller 200 of the fluid in design and performance in General is similar to the controller 100 of the fluid, shown in figure 1. However, below are described several differences between the controller 200 and is known by the controller 100.

The controller 200 includes a valve Assembly 202 having a saddle valve 204, the plate 206 of the valve stem 208 of the valve, which is connected to the plate 206 of the valve guide valve 210, which holds the rod 208 of the valve so that the sealing surface is of 212 plates 206 of the valve retains essentially coplanar relation with the sealing surface 214 of the saddle valve 204. The lever 216 is attached to the lower part of the housing 218 of the controller 200 through the turning of the rod 220. The lever 216 has a first end 222 that is attached to the shaft 208 of the valve, and a second end 224, which is attached to the membrane 226.

In contrast to well-known regulator 100 shown in figure 1, the rod 208 of the valve includes a stopper 228. The stopper 228 may be made in one piece with the rod 208 of the valve or may be a separate element suitably attached to the rod 208. In any of these cases, the stopper 228 limits the linear movement of the piston rod 208 of the valve (i.e. the moving rod 208 along its longitudinal axis within the guide 210 of the valve and, thus, the plates 206 of the valve to the seat 204 of the valve to prevent damage (e.g., indentation, cuts etc) to the sealing surface 212 of the plate 206 of the valve. Attaching the stopper 228 to the shaft 208 of the valve significantly reduces the impact of the imposition of tolerances, so that forces applied to the sealing surface 212 at the point of the stop can be adjusted more accurately. In addition, it improve the regulation of the point of stopping improves the safety characteristics of the pressure reducing valve regulator 200.

Figure 3 shows a partial view in section of another version of the known regulator 300 of the fluid. The controller 300 of the fluid is a typical panyhose the pressure regulator, which are often used in systems with LPG. As shown in figure 3, the controller 300 includes a valve Assembly 302 that is operatively connected to the membrane 304 via a lever 306. The valve Assembly 302 includes a valve seat 308 and plate 310 of the valve. The plate 310 of the valve attached to the shaft 312, which is supported by the guide 314 of the valve. The lever 306 is connected to a rod 312 by means of a pin or bearing 316 and rotates around the rotary rod 318 to move the rod 312 and the plate 310 of the valve along the longitudinal axis of the rod 312 and the guide 314 to the saddle 308 or from him.

With the known configuration of the lever 306 and the pin 316, shown in figure 3, the force applied from the lever 306 to the pin 316 and, therefore, the rod 312 is essentially parallel (e.g., coaxial) to the longitudinal axis of the rod 312, as represented by arrow a reference position 320. As a result, the rod 312 is not subjected to a lateral load in the direction of the guide 314, which minimizes the friction between the rod 312 and the guide 314. As a result, minimum friction, backlash or clearance between, for example, the coupling pin 316 with lever 306 may allow the rod 312 and the plate 310 (as well as the output control pressure) to oscillate at a control point, especially if the controller 300 controls a large pressure drop.

Figure 4 shows a partial view in section of a variant confit is urali 400 lever, which you can use inside a pressure regulator, such as, for example, the controllers 200 and 300 shown in figure 2 and 3, respectively. As shown in figure 4, the lever 402 is connected to the housing 404 of the regulator by turning the rod 406. Valve 408 in the collection contains a saddle valve 410, the plate 411 of the valve and rod 412 of the valve. The rod 412 of the valve contains a protrusion 414, which is located inside the recess 416 of the lever 402. The protrusion 414 may be a pin cylindrical or have any other suitable shape to support the locking lever 402 through the notches 416.

As shown in figure 4, the recess 416 is of such form that the resultant force applied from the lever 402 to the protrusion 414 is not parallel or coaxially to the longitudinal axis of the rod 412. An example of one such vector is the resultant of the forces denoted by the reference position 420. The shape of the recess 416, shown in figure 4, angled in such a way that the wall of the recess 416 in contact with the protrusion 414, is not perpendicular to the longitudinal axis of the rod 412. At the point of contact between the wall of the recess 416 and the tab is located at the end of the arrow representing the vector of the resultant force, shown by the reference position 420. Thus, from the side of the lever 402 to the shaft of the valve 412 is applied considerable force, which is perpendicular to the longitudinal axis of the rod 412 of the valve (i.e. sostavlyaya the resulting force 420, which is perpendicular to the longitudinal axis of the rod 412 of the valve).

Force applied perpendicular to the longitudinal axis of the rod 412 of the valve, provides a lateral load on the rod 412 in the direction of the guide 418, thus increasing the friction force between the rod 412 and the guide 418. This increased frictional force serves to substantially minimize or eliminate oscillation of the rod 412 and plates 411 of the valve at a control point to provide a highly stable output pressure of the regulator under conditions of high pressure drop.

Of course, the recess 416, shown in figure 4, is just one example of the geometric shape of the notches, which can be used to provide applications with hand lever 402 to the shaft 412 of force that is not aligned and is not parallel to the longitudinal axis of the rod 412. In General, any mechanical coupling between the lever 402 and the protrusion 414, from which stem valve 412 is applied resultant force having a substantial component which is perpendicular to the longitudinal axis of the rod 412 may be used to create substantial friction force between the guide 418 and the rod 412 of the valve.

In addition, may include a stopper 422, similar to the stopper 228, shown in figure 2, or equivalent. As in the case of the stopper 228, the stopper 422 limits the linear movement of the rod 412 and plates 411, Thu is to prevent damage and/or excessive seat wear plates 410 and 411.

Figure 5 shows the form in terms of known configuration of the flange 500 housing regulator, which is typically used to perform the flanges of the pressure regulator, such as, for example, the flange sections 110 and 112 of the controller 100 shown in figure 1. As shown in figure 5, the flange 500 has an inner surface 502 having a first radius, and the outer surface 504 having a second radius greater than the first radius. Thus, the flange 500 forms a ring of constant width (i.e. the difference between the second radius and the first radius). Flange 500 also includes a set of apertures (one of which is shown by the position 506), which are spaced circumferentially at equal distance. In other words, the distance around the circumference or radial angles between each of the holes being equal. Holes made to accommodate fasteners, such as bolts, self-tapping screws or other appropriate fasteners.

The mating flanges, which used the famous flange configuration 500 shown in figure 5, is usually compacted by means of inexpensive flat gaskets. Unfortunately, fastening equal intervals configuration of the flange 500 shown in figure 5, have resulted in a relatively large mounting area of the controller.

figure 6 shows a view in plan of another known configuration 600 FL the NCA regulator, which is typically used to reduce the mounting area of the pressure regulator. As shown in Fig.6, the configuration 600 flange contains four loops or tabs 602, 604, 606 and 608. Each of the ears 602-608 has a corresponding hole 610, 612, 614 and 616, which are made to accommodate fasteners, such as, for example, self-tapping bolt or screw. The distance between the holes 610 and 612 and the distance between the holes 614 and 616 is equal to the distance between the holes 610 and 616 and the distance between the holes 612 and 614.

While known configuration 600 flange depicted in Fig.6, can be used to reduce the mounting area of the controller, the relatively small number of fasteners used in configuration 600, and a relatively large distance between them leads to a large amount of displacement of the flange. To compensate for the relatively large displacement of the flange to prevent leakage of pressure configuration 600 flange usually contains a groove or channel 620 to clamp the membrane to ensure the use of membranes with a collar.

7 shows a partial view in section, showing the membrane 702 flange, which can be used to seal the opposite flanges 704 and 706, which are made on the basis of the configuration 600, depicted in Fig.6. As shown in Fig.7, the membrane 702 with burti the om has a section 708 of the flange, which is located inside the groove, or channel, 710 for flange flange 704. Offset additional material associated with the flange 708, flanges 704 and 706, provides the flanges 704 and 706, the ability to bend (for example, to separate) without risk to seal top flange 708 membrane, associated with channel 710 to the collar.

However, membrane flange relatively expensive to manufacture because of the high percentage of marriage and expensive stages of the process. In addition, the tooling required to perform a groove or channel for the collar (for example, channels 620 and 710 for shoulder, shown in Fig.6 and 7, respectively) inside flange, leads to a relatively expensive maintenance tool. In particular, the area of the tool with the compressed radius, which form the groove or channel flange prone to cracking due to thermal stress.

On Fig shows in plan configuration options 800 flange, which can be used with a regulator fluid medium, such as a variant of the controller 200 fluid, shown in figure 2. Configuration 800 of the flange has a first radius 802, forming the inner section 804 of the flange 800, and the second radius 806, greater than the first radius 802, which forms the mounting area 808. The flange 800 includes multiple distributed in the environment and the activity projections in the form of a lug or lugs 810, 812, 814 and 816. Ears 810-816 have respective outer sections 818, 820, 822 and 824, which form the third radius 826 that is greater than the second radius 806.

Ears 810-816 contain the corresponding pairs of holes 828 and 830, 832 and 834, 836 and 838, 840 and 842. Holes 828-842 made to accommodate fasteners, such as bolts, self-tapping screws, etc. As shown in option on Fig, a circular gap between the holes 828 and 830 are essentially the same as the circular gap between the holes 832 and 834, 836 and 838 and 840 and 842. In addition, the interval between the paired holes (for example, 828 and 830) is less than the circular gap between, for example, holes 830 and 832. In contrast to the known configuration 500 of the flange shown in figure 5, an example configuration 800 of the flange provides the same number of fasteners for strength, but significantly reduces the mounting area. In addition, in contrast to the known configuration 600 flange depicted in Fig.6, an example configuration 800 flange on Fig provides a reduced mounting area, without requiring the use of membranes with the shoulder. Instead, the example configuration 800 flange depicted in Fig, can be used with relatively inexpensive flat gasket, as the maximum gap between the mounting parts are reduced (while maintaining the minimum installation area) compared the Yu with known structures flange with four bolts, shown in Fig.6, thus reducing the bending of the flange.

There have been described several features of the preferred controller of the fluid. In particular, the stopper, made in one piece with the valve stem of the regulator. This built-in stopper reduces the effect of applying tolerances to allow more precise control over the extent to which the valve plate can lead to the valve seat. This improved regulation of the movement of the stem and valve head against the valve seat can be used to greatly reduce wear and/or damage that may be caused by the sealing surfaces of the valve regulator Assembly, especially in the conditions of TVersity. In addition, the improved regulation of the movement of the stem and the valve may also provide more precise control of the pressure reducing valve of the regulator.

Also described configuration of the lever, which provides a side load on the valve stem toward the valve guide in order to increase the friction between them. Namely regulation of the resulting force vector, which lever actuates the valve stem, designed to obtain a significant component of the force perpendicular to the longitudinal axis of the valve stem, the valve stem can be applied to borovoladsko inside the guide. This lateral load creates adjustable friction between stem and guide, greatly reducing or eliminating the oscillation of the rod and plates at a control point, especially where the controller controls a relatively large pressure drop.

In addition, the above configuration of the flange, which provides a reduced mounting area, and which can be used with relatively inexpensive flat gasket (as opposed to the membrane with the shoulder). In the described configuration of the flange is full of fasteners for each flange of the eyelet or tab to resolve the problem of bending of the flange, usually experienced in the case of known constructions flange with a reduced mounting area.

Any of the signs of the stopper of the valve stem, the configuration of the lever and the configuration of the flange described herein may be used separately or in any desired combination to achieve a particular task or meet a specific application. For example, all these signs can be combined within a single device to provide a controller suitable for use in applications with natural gas, and in applications with LPG. In particular, the signs of the configuration of the flange with a reduced mounting area and subjected to a side load on the valve stem osobennostyami for applications with LPG because of space limitations and high pressure drops (which tend to create fluctuations in outlet pressure), commonly found in these applications. In addition, the controller having such characteristics can also be made with the accuracy requirements of regulation necessary to satisfy applications with natural gas. Namely, the described configuration of the flange provides the use of a relatively large membrane, which enables the use of relatively low leverage. As discussed above, the low ratio of the lever improves the gain of the proportional band and, thus, the precision regulation of output pressure.

Although there have been described certain variations, the scope of coverage of this patent is not limited. On the contrary, this patent covers all embodiments of objectively falling in the scope of the applied claims as literally and under the doctrine of equivalents.

1. Decreasing the pressure of the fluid regulator, comprising

the case,

the membrane located inside

the valve is located inside the housing and having a valve seat, the valve plate and the valve stem,

the valve guide made for holding the valve stem in such a way that the sealing surface of the valve essentially coplanar the valve seat,

a lever having a first end attached to the valve stem, and a second end attached to the membrane, and a lever attached to the shaft in such a way as to apply a force to the rod in a direction that is essentially perpendicular to the longitudinal axis of the rod,

flange with a first radius, forming the inner section of the flange, and a second radius greater than the first radius, which forms the mounting area of the controller of the fluid

when this flange contains a number of tabs which are spaced around the circumference so that the first and second sets of protrusions separated by the first circular gap, and the second and third set of protrusions separated by a second circular gap larger than the first circular gap, and

each set of protrusions includes at least one slot for accommodating fasteners so that the flange was made more than four holes.

2. The controller according to claim 1, wherein each of the protrusions includes at least two holes.

3. The regulator according to claim 2, in which at least two holes associated with each of the protrusions spaced around the circumference at the first traffic interval.

4. The controller according to claim 1, wherein the protrusions have the shape of ears.

5. The controller according to claim 1, wherein the stem further comprises a stopper made to limit the movement of the valve to ETS is in.

6. The regulator according to claim 5, in which the rod includes a protrusion and the first end of the lever includes a notch that is made to accommodate the ledge.

7. The regulator fluid containing

the case,

the membrane located inside

the valve is located inside the housing and having a valve seat, the valve plate and the valve stem,

the valve guide made for holding the valve stem in such a way that the sealing surface of the valve essentially coplanar the valve seat, and

a lever having a first end attached to the valve stem, and a second end attached to the membrane, with the first end attached to the valve stem in such a way as to apply a force to the rod in a direction that is essentially perpendicular to the longitudinal axis of the stem.

8. The regulator according to claim 7, in which the lever is arranged to engage with the valve stem through the notches.

9. The controller according to claim 8, in which the recess has a wall that is at an angle, not perpendicular to the longitudinal axis of the valve stem.

10. The regulator according to claim 7, in which the valve stem includes a protrusion and the first end of the lever includes a recess, which accommodates the ledge.

11. The regulator according to claim 7, in which the valve includes a stopper that restricts movement of the valve to the valve seat.

12. The controller according to claim 11, in which the stopper made in one piece with the valve stem.

13. The regulator fluid containing

the case,

the membrane located inside the housing, and

the valve is located inside the housing and having a valve seat, the valve plate and the valve stem in which the valve includes a stopper made to limit the movement of the valve to the valve seat,

a lever having a first end attached to the valve stem, and a second end attached to the membrane, with the first end attached to the valve stem in such a way as to apply a force to the rod in a direction that is essentially perpendicular to the longitudinal axis of the stem.

14. The controller according to item 13, in which the stopper made in one piece with the valve stem.

15. The regulator 14 in which the first end of the lever engages with the valve stem by means of the ledge, made in one piece with the valve stem,

a lever having a first end connected with the valve stem, and a second end connected to the membrane, in which the first end of the lever connected with the valve stem to push the valve stem in a direction that is not parallel to the longitudinal axis of the valve stem.

16. The regulator fluid containing

flange with a first radius, forming the inner section of the flange, and the second is the radius, greater than the first radius, which forms the mounting area of the controller of the fluid at this flange contains a number of tabs which are spaced around the circumference so that the first and second sets of protrusions separated by the first circular gap, and the second and third set of protrusions separated by a second circular gap larger than the first circular gap, each of the multiple intervals contains at least one slot for accommodating fasteners so that the flange was made more than four holes,

a valve having a seat, a valve plate and a stem connected to the valve plate,

the valve guide, which holds the rod to hold the sealing surfaces of the valve, essentially co-planar relation to the saddle,

a lever having a first end connected with the rod, and a second end connected with the diaphragm inside the regulator, and a lever attached to the shaft in such a way as to apply a force to the rod in a direction that is essentially perpendicular to the longitudinal axis of the stock, and

stopper, made in one piece with the rod and to limit movement of the valve to the seat.

17. The regulator fluid containing

the valve Assembly with the valve stem and nab alleyway, and

a lever coupled to the valve stem for application to the valve stem of the lateral load in the direction of the guide to control the friction between them.

18. The regulator 17, which contains a flange made to accommodate at least five fasteners so that at least two circular interval have been associated, at least five fasteners.

19. The regulator 17, further containing a stopper, made in one piece with the rod, and a stopper is responsible for regulating the extent to which the valve plate is moved toward the valve seat.

20. The regulator p, optionally containing a membrane having a size at which the regulator is made for regulating the pressure in at least two different types of fluid.

21. The controller according to claim 20, in which at least two different types of fluid include natural gas and liquefied petroleum gas.



 

Same patents:

FIELD: valving systems.

SUBSTANCE: device comprises pulse tube that connects the control space of pilot with the receiver of the static outlet pressure and is connected with the inner chamber and switch mounted at the site of pipe joint made of e.g. three-position cock. The flexible coupling controls the space between the side and flanges of the inlet and outlet branch pipes depending on the switch position.

EFFECT: expanded functional capabilities.

1 dwg

FIELD: automatic control.

SUBSTANCE: device comprises housing, lid, adjusting spring, control members for adjusting specified parameters, and chamber that receives the diaphragm. The diaphragm divides the space of the chamber into the above-diaphragm space connected with the gas pipeline to be controlled and under-diaphragm space connected with the atmosphere. The diaphragm is mounted on the movable rod. The rod passes through the diaphragm at its center and causes the pusher to move. The pusher is connected with the second rod that is perpendicular to the first rod and connected with the third rod. The shutoff valve is mounted on the third rod. The rod of the shutoff valve is oriented parallel to the rod of the diaphragm. The second chamber of the device is positioned in the space between the lid and housing from the side of the lid. The second chamber receives the second diaphragm that is shaped similar to the first diaphragm and separates the second chamber into above-diaphragm space and under-diaphragm space. The under-diaphragm space is in communication with the atmosphere and defines a space between the lid and the second diaphragm. The second diaphragm is mounted on the same rod as the first diaphragm for permitting the above-diaphragm spaces of both of the chambers to be interconnected by means of a passage made in the hollow rod. The second chamber is defined by the cylindrical hollow housing mounted on the lid and receives the a baffle at its center provided with diaphragm for permitting the rod of the diaphragms to pass through them. The rod of the diaphragms is connected with the pusher by means of a bushing. The bushing has side passage oriented parallel to the diaphragms for connection of the above-diaphragm spaces.

EFFECT: enhanced reliability and precision.

2 dwg

Gas reducer // 2290682

FIELD: engineering of gas reducers.

SUBSTANCE: gas reducer contains body 1 with saddle 2 and lid 3, superstructure section, including superstructure screw 4, spring 5, membrane 6 with supporting plate 7 and pusher 8, reducing valve, consisting of hollow body 9 with through channel and thickening 10, balancing chamber 14, connected to hollow 21 of working pressure of body 1 and provided with controlling valve 17. Balancing chamber 14 may be made in body 1, or in its stopper 16, while reducing valve is mounted in the chamber with circular gap relatively to the wall of the latter. Chamber is provided with controlling valve, as spring of which spring of reducing valve is used.

EFFECT: low unevenness coefficient, low dimensions and weight of reducer.

5 cl, 1 dwg

FIELD: possible use as an adjuster of flow-force characteristics of a liquid.

SUBSTANCE: adjuster contains body 1 with internal portion 2, consisting of control hollow 3, coaxial input 4 and output 5 hollows, between which adjusting organ 6 is positioned, made in form of locking element 7, rigidly connected to rod 8, and spring 9 of locking element 7. control hollow 3 is made in form of two side cylinder-shaped branches 10, connecting input 4 and output 5 hollows.

EFFECT: simplified construction of adjuster of flow-force characteristics and decreased hydraulic losses during adjusting.

1 dwg

FIELD: engineering of devices for automatic maintenance of pressure of working substance at given level, possible use in systems for supplying natural gas to industrial and communal consumers.

SUBSTANCE: device has body with input and output hollows, locking valve, membrane sensitive mechanism, adjusting valve. Adjusting valve is controlled by membrane drive by second order lever, lever for contact interaction of rod of adjusting valve.

EFFECT: increased device operation reliability.

2 dwg

FIELD: measuring equipment.

SUBSTANCE: device has thermocouple 1 with seam 2, fixedly packed in tubular case 3 with longitudinal groove 4. tubular case 3 on thread enters screw holder 5, which by its outer screw profile is screwed into coils of set-point spring 6, fixedly held on heating element 7. Outwardly bent end 8 of spring 6 is inserted into longitudinal groove 4 of tubular case 3. spring 6 is provided with sensor 9 for axial displacement of spring and sensor 10 for dynamic pressure force. Rotation of screw holder 5 shall be performed until seam 2 stops against heating element 7 to the point, when sensor 9 and sensor 10 will determine, that step S of spring 6 increased to controlled value, which matches reliable contact of seam 2 with heating element 7.

EFFECT: determined moment of contact of seam between thermocouple and heating element during manual movement of screw holder.

2 cl, 1 dwg

FIELD: pneumatics and automatics, namely reducing and sustaining predetermined level of pressure of compressed gas in pneumatic drives of transporting and other machines, in tanks of fuel system of automobile transport at pumping fuel.

SUBSTANCE: reduction pneumatic valve includes housing with inlet and outlet ducts, calibrated orifice in inlet duct preventing increase of output pressure; spring-loaded stepped throttling valve; membrane type control unit having seat rigidly secured to membrane and elastic sealing member for minimizing change of effective surface area of membrane due to its minimum bending; valve member in the form of spherical head for reducing sealing effort, compensating membrane shift and providing intensified discharge of compressed air; filter placed at inlet of orifice for preventing clogging.

EFFECT: enhanced operational reliability, prevention of outlet pressure exceeding predetermined value, effective relief of compressed air, lowered sealing effort due to compensation of membrane shift.

3 cl, 3 dwg

The invention relates to a technique of automatic control and can be used in water supply systems and other

The invention relates to pressure regulators (gearboxes) and can be used in various pneumatic systems aircraft, missiles, satellites

The invention relates to a device for regulating predominantly pure gases and can be used in devices and systems for gas analysis

FIELD: pneumatics and automatics, namely reducing and sustaining predetermined level of pressure of compressed gas in pneumatic drives of transporting and other machines, in tanks of fuel system of automobile transport at pumping fuel.

SUBSTANCE: reduction pneumatic valve includes housing with inlet and outlet ducts, calibrated orifice in inlet duct preventing increase of output pressure; spring-loaded stepped throttling valve; membrane type control unit having seat rigidly secured to membrane and elastic sealing member for minimizing change of effective surface area of membrane due to its minimum bending; valve member in the form of spherical head for reducing sealing effort, compensating membrane shift and providing intensified discharge of compressed air; filter placed at inlet of orifice for preventing clogging.

EFFECT: enhanced operational reliability, prevention of outlet pressure exceeding predetermined value, effective relief of compressed air, lowered sealing effort due to compensation of membrane shift.

3 cl, 3 dwg

FIELD: measuring equipment.

SUBSTANCE: device has thermocouple 1 with seam 2, fixedly packed in tubular case 3 with longitudinal groove 4. tubular case 3 on thread enters screw holder 5, which by its outer screw profile is screwed into coils of set-point spring 6, fixedly held on heating element 7. Outwardly bent end 8 of spring 6 is inserted into longitudinal groove 4 of tubular case 3. spring 6 is provided with sensor 9 for axial displacement of spring and sensor 10 for dynamic pressure force. Rotation of screw holder 5 shall be performed until seam 2 stops against heating element 7 to the point, when sensor 9 and sensor 10 will determine, that step S of spring 6 increased to controlled value, which matches reliable contact of seam 2 with heating element 7.

EFFECT: determined moment of contact of seam between thermocouple and heating element during manual movement of screw holder.

2 cl, 1 dwg

FIELD: engineering of devices for automatic maintenance of pressure of working substance at given level, possible use in systems for supplying natural gas to industrial and communal consumers.

SUBSTANCE: device has body with input and output hollows, locking valve, membrane sensitive mechanism, adjusting valve. Adjusting valve is controlled by membrane drive by second order lever, lever for contact interaction of rod of adjusting valve.

EFFECT: increased device operation reliability.

2 dwg

FIELD: possible use as an adjuster of flow-force characteristics of a liquid.

SUBSTANCE: adjuster contains body 1 with internal portion 2, consisting of control hollow 3, coaxial input 4 and output 5 hollows, between which adjusting organ 6 is positioned, made in form of locking element 7, rigidly connected to rod 8, and spring 9 of locking element 7. control hollow 3 is made in form of two side cylinder-shaped branches 10, connecting input 4 and output 5 hollows.

EFFECT: simplified construction of adjuster of flow-force characteristics and decreased hydraulic losses during adjusting.

1 dwg

Gas reducer // 2290682

FIELD: engineering of gas reducers.

SUBSTANCE: gas reducer contains body 1 with saddle 2 and lid 3, superstructure section, including superstructure screw 4, spring 5, membrane 6 with supporting plate 7 and pusher 8, reducing valve, consisting of hollow body 9 with through channel and thickening 10, balancing chamber 14, connected to hollow 21 of working pressure of body 1 and provided with controlling valve 17. Balancing chamber 14 may be made in body 1, or in its stopper 16, while reducing valve is mounted in the chamber with circular gap relatively to the wall of the latter. Chamber is provided with controlling valve, as spring of which spring of reducing valve is used.

EFFECT: low unevenness coefficient, low dimensions and weight of reducer.

5 cl, 1 dwg

FIELD: automatic control.

SUBSTANCE: device comprises housing, lid, adjusting spring, control members for adjusting specified parameters, and chamber that receives the diaphragm. The diaphragm divides the space of the chamber into the above-diaphragm space connected with the gas pipeline to be controlled and under-diaphragm space connected with the atmosphere. The diaphragm is mounted on the movable rod. The rod passes through the diaphragm at its center and causes the pusher to move. The pusher is connected with the second rod that is perpendicular to the first rod and connected with the third rod. The shutoff valve is mounted on the third rod. The rod of the shutoff valve is oriented parallel to the rod of the diaphragm. The second chamber of the device is positioned in the space between the lid and housing from the side of the lid. The second chamber receives the second diaphragm that is shaped similar to the first diaphragm and separates the second chamber into above-diaphragm space and under-diaphragm space. The under-diaphragm space is in communication with the atmosphere and defines a space between the lid and the second diaphragm. The second diaphragm is mounted on the same rod as the first diaphragm for permitting the above-diaphragm spaces of both of the chambers to be interconnected by means of a passage made in the hollow rod. The second chamber is defined by the cylindrical hollow housing mounted on the lid and receives the a baffle at its center provided with diaphragm for permitting the rod of the diaphragms to pass through them. The rod of the diaphragms is connected with the pusher by means of a bushing. The bushing has side passage oriented parallel to the diaphragms for connection of the above-diaphragm spaces.

EFFECT: enhanced reliability and precision.

2 dwg

FIELD: valving systems.

SUBSTANCE: device comprises pulse tube that connects the control space of pilot with the receiver of the static outlet pressure and is connected with the inner chamber and switch mounted at the site of pipe joint made of e.g. three-position cock. The flexible coupling controls the space between the side and flanges of the inlet and outlet branch pipes depending on the switch position.

EFFECT: expanded functional capabilities.

1 dwg

FIELD: pipeline engineering.

SUBSTANCE: fluid pressure regulator comprises housing provided with a flange having a number of projections shaped into lugs. Each projection has at least one opening made for permitting receiving a fastening member. The regulator has valve provided with the seat, valve plate, valve rod connected with the plate, and valve guide member that locks the rod of the valve. The lever has the first end connected with the valve rod and second end connected with the diaphragm. The force is applied to the rod from the side of the lever in the direction virtually perpendicular to the longitudinal axis of the valve rod. The valve rod has stop member that arrests the valve rod and the plate against movement with respect to the seat of the valve.

EFFECT: enhanced reliability.

21 cl, 8 dwg

FIELD: engineering industry; regulator engineering.

SUBSTANCE: regulator of gas pressure contains valve located on a rod, saddle, central hole, feeler connected by means of lever transmission with a rod. In the valve and in rod channel for a gas supply in a compensating cavity is executed. This cavity is organised by protective and compensating membranes. Regulator has located in a peripheral edge part of the valve the channel for an inlet (input) of gas. Central face part of the valve from periphery has an overlapping element, forming under itself a cavity for a gas course.

EFFECT: productivity gain of the device due to rising of its throughput.

3 cl, 1 dwg

FIELD: heating.

SUBSTANCE: valve unit (1) includes housing with inlet (2) and outlet (3), valve 1 (6) with seat (8) and gate (7) and valve 2 (10) providing stable pressure drop at valve 1 (6). Valve 1 (6) is located in the first part of unit body (A) whereas valve 2 (10) is situated in the second part (B) of unit body. Besides, first part (A) and second part (B) of unit body are interconnected. Pressure transfer channel (28) from outlet (3) to membrane side (24), which is opposite to valve 1 (6) crosses parting surface (C) between the first (A) and second (B) parts of unit body.

EFFECT: simplification of valve unit design.

10 cl, 2 dwg

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