Valve seat with forced position fixation for use with control units for fluid medium flow rate

FIELD: machine building.

SUBSTANCE: present invention on the whole is related to the units for fluid medium flow rate control and, in particular, to a valve seat with forced position fixation to be used with fluid medium flow rate control units. The proposed group of inventions comprises a valve seat with forced position fixation to be used with a fluid medium flow rate control unit, and a fluid medium flow regulator. The valve seat comprises a metal ring and an elastic ring connected to the metal ring and having a sealing surface for leakproof interaction with a working element regulating the flow, and fluid medium flow rate control units, at least part of the external elastic ring surface includes a circular protrusion for leakproof interaction with a circular groove in the case of the fluid medium flow rate control unit, the internal elastic ring surface is connected to the external metal ring surface. The fluid medium flow regulator comprises a case having an arm formed by an annular cavity in the case between an inlet hole and an outlet hole, and the above valve seat set inside the case.

EFFECT: improved performance characteristics of a fluid medium flow regulator and provision for forced position fixation in essence to prevent shift of the valve seat in respect to the case of the fluid medium flow rate control unit.

16 cl, 3 dwg

 

The technical field to which the invention relates.

The present invention generally relates to devices for controlling the flow of fluid and, more particularly, to a valve seat with a force detent position for use with devices control the flow of fluid.

The level of technology

Device control the flow of fluid, such as flow regulators of fluid and control valves for fluid, are widely used in control systems of technological processes to control the flow of fluid and/or pressure of various fluid (e.g., liquids, gases, and so on). For example, regulators of flow of a fluid medium, typically used to regulate the pressure of the fluid medium to smaller and/or substantially constant value. In particular, the flow regulator fluid has an input opening through which usually receives fluid from a source of relatively high pressure and provides a relatively smaller and/or essentially constant pressure on the exit hole. When moving process fluid with high pressure through the control system of technological process control flow of the fluid reduces the pressure of the process fluid at least at one point to deliver the technology is some of the fluid, having a lesser or reduced pressure, in a subsystem or other points of loading and unloading. For example, the controller associated with the piece of equipment (e.g. boiler), you may receive the fluid (e.g. gas), with relatively high and to some extent changing the pressure, from a source distribution of the fluid and can regulate the fluid to ensure a low, essentially constant pressure suitable for the safe and effective use of equipment.

The regulator usually reduces inlet pressure to a smaller output pressure by restricting flow of fluid through the working hole to align with variable demand further in the thread. To restrict flow of fluid between the inlet and outlet ports in the controller typically uses a plunger valve, which interacts with a valve seat located in the working bore of the housing of the regulator. In some known regulators of fluid is used, the valve seat is made of elastic material, to provide a reliable seal between the valve seat and the plunger valve. In such well-known regulators of the valve is usually located in the working hole so that the friction force between the elastic valve seat and the body of the regulator is wide valve seat within the housing of the regulator. However, this known friction connection of the valve seat housing regulator allows the valve seat to shift or move relative to the housing, for example, because of the conditions of backpressure (i.e. back pressure), wear elastic material jammed between the piston valve and valve seat (for example, because of the pressing rubber), when the plunger valve is moved from the valve seat, etc. This shift or displacement of the valve seat relative to the body can cause misalignment between the valve seat and the plunger valve and thus cause undesirable leakage of fluid outside of the valve seat and the deterioration of the operating characteristics of the fluid flow regulator environment.

Disclosure of inventions

In one implementation options of the valve seat with a force detent position for use with the control flow of a fluid medium contains metal ring and the elastic ring connected with a metal ring and having a sealing surface for sealing engagement with a work element that regulates the flow control device a flow rate of the fluid. At least part of the outer surface of the elastic ring includes a circular protrusion for sealing engagement with a circular groove in the housing of the device management rhodomelaceae environment.

In another implementation, the valve seat is forced fixation position for use with flow regulator fluid medium contains essentially rigid supporting element is connected essentially with the elastic sealing element. The inner surface of the sealing element is connected with the external surface of the support element, and at least part of the outer surface of the sealing element has a first outer diameter and a second outer diameter that is greater than the first outer diameter for forming at least one protruding element to hold the valve seat in the body of the flow regulator of fluid.

In another variant of realization of the flow regulator of fluid includes a housing having a shoulder formed by an annular cavity in the housing between the inlet and the outlet, and a valve seat located in the housing. The valve seat includes a first annular element and the second annular element connected to the first annular element to provide sealing surfaces for sealing engagement with a movable plunger valve of the regulator. The second annular element has an outer protruding portion being in frictional engagement with the annular cavity, so that said protruding part of the interaction is there with a shoulder of the housing to hold the valve seat in the housing.

Brief description of drawings

Figure 1 shows the cross-section of the flow regulator of the fluid is made with the valve seat according to one of the implementation options described in the present description.

On figa shows an outline view of the valve seat shown in figure 1.

On FIGU shows another enlarged view of the valve seat shown in figa.

On figa shows a partially enlarged detail view of the example valve seat and a flow control of the fluid shown in figure 1, 2A and 2B.

On FIGU shows with local incision valve seat and a flow control of the fluid shown in figure 1, 2A, 2B, and 3A.

The implementation of the invention

Typically, flow regulators fluid change fluid flow in accordance with the measured further along the flow pressure to support pressure in the processing system within acceptable limits and/or at a constant level. Controls flow of fluid usually regulate the flow and pressure of process fluid in response to the difference between the pressure of the fluid at the outlet opening (i.e. the force applied to one side of the diaphragm) and the specified driving force (i.e. the force applied to the other side of the diaphragm) to change the flow through the regulator to achieve essentially constant pressure on the exit hole.

egulatory flow of fluid usually contains the aperture, functionally connected to the plunger of the valve through the plate aperture and the valve stem. Aperture moves along a rectilinear trajectory in response to the difference between the force applied by the pressure fluid outlet, and a given force (for example, selected by a spring). The movement of the diaphragm causes movement of the plunger valve in the direction from the valve seat to him or to allow or restrict fluid flow between the inlet and outlet of the regulator. In some known regulators valve seat made of an elastic material and friction way connected to the housing of the regulator. In particular, the frictional force between the elastic material of the valve seat and the inner surface of the housing of the regulator hold the valve seat in a predetermined position relative to the housing of the regulator. However, this known configuration allows for the possibility of a shift or displacement of the valve seat relative to the housing, for example, due to back pressure (i.e. conditions of back pressure), which occurs when the pressure on the output hole is essentially more pressure at inlet (for example, when the plunger valve is taken away from the valve seat). This back pressure may occur, for example, due to temperature fluctuations of the fluid. In addition or in the other embodiment of the invention the wear of the elastic material of the valve seat may allow for the possibility of a shift or displacement of the valve seat relative to the valve body. Additionally, or in another embodiment of the invention, the interaction of the plunger valve with a valve seat for a long period of time, the elastic valve seat may stick or be attached to the edges of the plunger valve, for example, when leaching in elastic material compounds and their connection with the plunger of the valve (for example, because of the pressing rubber), and, thus, to cause to move or shift valve seat relative to the housing of the regulator during retraction of the plunger valve from the valve seat. Such a shift or displacement of the valve seat relative to the body can cause misalignment between the valve seat and the plunger valve and thus cause undesirable leakage outside the valve seat, and the performance deterioration of the flow regulator of fluid.

The proposed valve seat described herein, provides for compulsory fixation position is essentially to prevent movement of the valve seat relative to the housing of the device control the flow of fluid, such as control flow of fluid. In one embodiment, the implementation described here, the valve seat is connected (for example, connected in a frictional manner, rigidly connected, and so on) to the housing of the regulator to prevent accidental removal of the valve seat during operation to the Apana. In particular, the proposed valve seat described herein, includes an elastic ring, which friction way interacts with the working bore of the housing of the regulator or fixed therein (or in the case of the other device to control the flow of fluid to connect the friction way valve seat body of the regulator. The elastic ring is connected with a metal ring, which provides rigid support of the elastic ring. Additionally, in contrast to the known seat valve, the proposed elastic ring includes a circular protrusion, which friction way interacts (e.g., located within) with the annular cavity or groove in the controller casing is made near the working bore of the housing of the regulator. In addition, the circular protrusion forms a shoulder which cooperates with a shoulder of the housing, is formed an annular cavity or groove. Thus, the engagement of the protrusion with the cavity and a shoulder of the housing forces the detent position and substantially prevents movement of the valve seat relative to the body of the regulator. The specified force fixing provisions are particularly preferred in applications that are experiencing back pressure between the inlet and outlet ports (i.e. the output pressure which exceeds the pressure at the entrance is), causing seizure between the plunger valve and the valve seat (for example, due to wear rubber), when the plunger valve away from the valve seat after a long interaction plunger valve with the valve seat, etc. since this forced the lock position prevents movement of the valve seat relative to the body.

Figure 1 shows the cross section of the controller 100 of the flow rate of the fluid according to one implementation options, made with a saddle valve 102 environment according to one implementation options described in the present description. In this example, the controller 100 includes an upper housing 104 and lower housing 106, which are connected together by means of connecting elements 108. Aperture 110 is held between the upper housing 104 and lower housing 106. The upper housing 104 and the first side 112 of the diaphragm 110 to form the first chamber 114. The spring 116 is located inside the upper housing 104 between the first slot 118 for the spring and configured to adjust the second slot 120 for spring. In this example, the first camera 114 is hydraulically connected, for example, with the environment through holes 122.

The first slot 118 is connected to the plate 124 of the diaphragm, which supports the diaphragm 110. The adjustment mechanism 126 of the spring (e.g., screw) communicates with the second slot 120 and both the accounts for the length adjustment of the spring 116 (e.g., compresses or releases the spring 116), and thus regulates (e.g., increases or decreases) the value of a predetermined force or load which the spring 116 applies to the first side 112 of the diaphragm 110.

The lower housing 106 and the second side 128 of the diaphragm 110 at least partially form the second chamber 130, the inlet 132 and the outlet 134. The second chamber 130 is hydraulically connected to the outlet opening 134 through channel 136. Saddle valve 102 is located inside the lower housing 106 and forms a working hole 138 between the inlet 132 and outlet 134. The plunger 140 valve operable connected to the aperture 110 through the rod 142 of the valve plate 124 of the diaphragm. The second spring 144 is located in the cavity 146 of the stopper 148 of the plunger valve to bias the plunger 140 in the direction of the seat valve 102. In the example shown, the plunger 140 interacts with the saddle 102 to provide a reliable seal to prevent leakage of fluid between the inlet 132 and outlet 134. The stiffness of the second spring 144 is generally much less than the stiffness of the spring 116.

In this example, the controller 100 of the flow of fluid includes an internal relief valve 150 connected to the aperture 110 through the plate 124. The safety valve 150 has an opening 152 that hydrauli the Eski connected with the first chamber 114 and the second chamber 130. The second end 154 of the rod 142 includes a soft or elastic support 156 which communicates with the hole 152 of the safety valve 150 for termination (e.g., block) the flow of fluid between the first and second chambers 114 and 130, respectively. However, in other embodiments of the invention, the controller 100 of the flow rate of the fluid may contain a connecting support (i.e. nproposals support) instead of the internal relief valve 150 for connection operable aperture 110 with the plunger 140. In other embodiments of the rod 142 may be firmly connected with the plate 124 (e.g., via connecting elements).

During operation, the inlet 132 is in hydraulic communication with, for example, are located further along the flow distribution source of fluid, which provides the fluid with relatively high pressure. The outlet 134 is in hydraulic communication with are located further along the stream consumer, pressure regulator, or any other intermediate point at which you want the process fluid was desirable (low) pressure.

The controller 100 of the flow of a fluid medium, usually regulates inlet pressure of the fluid in the inlet port 132 to provide or develop trebuemogo the pressure in the output hole 134. To achieve the required pressure in the output hole of the spring 116 applies a force to the first side 112 of the diaphragm 110, which, in turn, has a plunger 140 relative to the seat 102 with the ability to restrict flow of fluid between the inlet 132 and outlet 134. Thus, the pressure at the exit hole or the required pressure depends on the magnitude of the predetermined force applied by the spring 116 to position the diaphragm 110 and, thus, the plunger 140 relative to the seat 102. The desired pressure set point can be performed by adjusting the force applied by the spring 116 to the first side 112 of the diaphragm 110, with the adjustment mechanism 126 of the spring.

If necessary, increase the required pressure further along the flow pressure of the fluid in the output hole 134 is reduced. The second chamber 130 detects a reduced pressure of process fluid in the output hole 134 through the channel 136. If the force applied to the second side 128 of the diaphragm 110 pressure of the fluid in the second chamber 130, decreases below a predetermined force applied by the spring 116 to the first side 112 of the diaphragm 110, the spring 116 causes the movement of the diaphragm 110 in the direction of the second chamber 130. When you move the aperture 110 in the direction of koutarou the camera 130, the plunger 140 is moved in the direction from the seat 102 to allow the flow of fluid through the working hole 138 between the inlet 132 and outlet 134 (for example, in the open position), and, thus, causes an increase in pressure in the output hole 134.

Conversely, if the output hole or further along the flow required pressure reduction or cessation of flow, the pressure of process fluid in the output hole 134 is increased. As indicated above, the increased pressure of the fluid in the output hole 134 is passed into the second chamber 130 through the channel 136 and applies force to the second side 128 of the diaphragm 110. If the pressure of the fluid in the second chamber 130 applies to the second side 128 of the diaphragm 110 force, which is equal to or exceeds the force applied by the spring 116 to the first side 112 of the diaphragm 110, the aperture 110 is moved toward the first chamber 114 (e.g., in an upward direction against the force applied by the spring 116, relative to figure 1). When moving in the direction of the first chamber 114 specified aperture 110 causes movement of the plunger 140 in the direction of the seat 102 to restrict fluid flow through the working hole 138. The second spring 144 shifts the plunger 140 in the direction of the seat 102 for sealing engagement with the seat 102 (for example, in the closed position) is essentially to stop the flow of fluid through the working hole 138 between the inlet 132 and outlet 134 and, thus, minisheet the pressure supply to the consumer, located further along the stream (i.e. in the closed position). Closed position of the controller 100 of the flow of the fluid occurs when the plunger 140 tightly interacts with the saddle 102 to provide a reliable seal and termination of fluid flow between the inlet 132 and outlet 134.

During normal operation (for example, to the closed position) the soft bearing 156 communicates with the hole 152 of the safety valve 150 to prevent unwanted leakage of fluid between the first and second chambers 114 and 130. When the closed position, the plunger 140 interacts with the saddle 102 to interrupt the flow of fluid between the inlet 132 and outlet 134.

In some cases, the pressure of the fluid in the output hole 134 is increased when further in the thread consumption is reduced (for example, shut down the power consumption, set forth in the course of the stream), and the plunger 140 negerlein interacts with the saddle 102 (i.e., the controller 100 is not moved to the closed position), for example, by sand, pipe scale, etc. Increased pressure of the fluid in the output hole 134 applies a force to the second side 128 of the diaphragm 110, which causes movement of the diaphragm 110 and the plate 124 in the direction of the first chamber 114 (i.e. compresses the spring 116 in wash the leading direction relative to figure 1). In the relief valve 150, which is connected to the aperture 110 through plate 124 moves in the direction from soft support 156. The movement of the diaphragm 110 in the direction towards the first chamber 114 causes the movement of an internal relief valve 150 in the direction from soft support 156 for hydraulic connection to the second chamber 130 and the first chamber 114 for lowering or removal of the pressure, for example, in the environment, through holes 122.

Saddle valve 102 according to one implementation options described here are preferably prevents accidental withdrawal from the lower housing 106 (i.e. moving from the casing 106) due to back pressure. Unlike some well-known seat of the valve, for example, in the proposed device the pressure at the exit hole that is greater than the pressure in the inlet, does not cause a shift or displacement of the seat 102 relative to the lower housing 106 (for example, working holes 138). Additionally or alternatively, the implementation of the proposed invention the saddle 102 described herein, preferably protected from involuntary shift or offset relative to the lower housing 106, for example, due to clogging or sticking of the plunger 140 to the saddle 102 (for example, due to wear rubber) when moving the plunger 140 in the direction from the seat 102 after a long interaction p is Unger 140 with the saddle 102. As mentioned above, the prevention of the specified move prevents misalignment between the piston 140 and seat 102 and, thus, improve the performance of the controller.

On figa shows an outline view of the saddle valve 102 according to one implementation options, shown in figure 1. On FIGU shows another enlarged view of the seat 102 according to one implementation options, shown in figa. As shown in figa and 2B, the saddle 102 according to one implementation options comprises a sealing element 202 connected to a rigid supporting element 204. In this example, the sealing element 202 is an essentially elastic annular element or ring, and a rigid supporting element 204 is an essentially rigid metal annular element or ring. Elastic ring 202 is connected with the metallic ring 204 and provides a sealing surface 206 and 208.

In this example, at least part of the elastic ring 202 includes at least one protruding element or circular protrusion 210. Elastic ring 202 has a first outer diameter 212 and the second outer diameter 214, which is larger than the first outer diameter 212, for the formation of the protrusion 210. The protrusion 210 also forms a shoulder 216 between the diameters 212 and 214. Not shown in other examples, the elastic ring 202 can contain multiple ring the new tabs. Elastic ring 202 may be made for example from rubber, nitrile, fluoroelastomer made (FKM), neoprene or any other suitable elastic and/or elastic materials.

The metallic ring 204 is surrounded by an elastic ring 202 so that the metallic ring 204 supports the elastic ring 202. The metallic ring 204 has a hole 218 that provides the flow of fluid when the saddle 102 is located in the lower body 106 of the controller 100 of the flow of fluid. In this example, the metallic ring 204 is made of stainless steel by means of mechanical processing. But in other examples, the ring 204 may be made from brass, carbon steel, plastic or any other suitable rigid material (materials). In other examples, the metallic ring 204 may be performed by forming and/or using any other suitable process (processes).

In this example, the elastic ring 202 is connected with the metallic ring 204 by pressing (e.g., by molding). Elastic ring 202 is formed over the metal ring 204 to form the saddle 102. In other examples, the elastic ring 202 can be mounted with a metal ring 204 or connected with it by a press fit to form the saddle 102. To facilitate connection of the elastic ring 202 with metal the ring 204, for example pressing, the specified metal ring 204 includes an annular protruding edge 302 (pigv), extending from the outer surface 304 (pigv) metal ring 204. The exposed end 302 can be formed, for example, by machining. In this example, the cross-section of the protruding region 302 has a rectangular shape. But in other examples, the cross-section of the speaker edge 302 may be T-shaped, arcuate, or any other suitable shape. Similarly, the inner surface 306 (pigv) of the elastic ring 202 has (e.g., forms) of the annular groove 308 for receiving protruding edges 302, when the elastic ring 202 are combined (e.g., by molding) with a metal ring 204. In other examples, the elastic ring 202 can be connected or is connected with the metallic ring 204 by chemical fasteners (e.g., adhesives) or any other suitable mounting material. In this example, the portion 307 of the outer surface 304 of the metal ring 204 is narrowed. In other examples, the outer surface 304 of the metal ring 204 may have any other suitable shape.

On figa shows an enlarged partial detail view of the device 102 according to one implementation options and the controller 100 of the flow of fluid, shown in figure 1, 2A and 2B. On FIGU shown increased h is a partial detail view of the seat 102 according to one implementation options and the controller 100 of the flow of fluid, shown in figure 1, 2A, 2B, and 3A. As shown in figa and 3B, the seat 102 is located (e.g., inserted) in the lower body 106 of the controller 100 of the flow of fluid to cover the flow path between the inlet 132 and outlet 134. More specifically, the saddle 102 is bonded or connected with the working hole 138 of the lower body 106 of the friction forces. The lower housing 106 contains a cut-out or cavity 310, which forms a shoulder 312. The saddle 102 is installed by press fit into the working hole 138 (e.g., mechanically) so that the protrusion 210 interacts (e.g., inserted) with the cavity 310 of the lower housing 106. Thus, the protrusion 210 is located in the cavity 310 interoperable shoulder 216 of the elastic ring 202 with a shoulder 312 of the lower housing 106. As a result, the saddle 102 forces the latching position to prevent its movement or shift relative to the lower housing 106. The edge of the shoulder 312 may have a conical, essentially rectangular, beveled form, or any other suitable shape.

In addition, frictional forces between the sealing surface 208 and the protrusion 210 of the elastic ring 202 and the corresponding surfaces 314 and 316 of the lower housing 106 connects the seat 102 with the lower housing 106 when the specified saddle 102 is located in the lower body 106. The metallic ring 204 support the AET elastic ring 202 and applies a reactive force in the radial direction to the surfaces 314 and 316 of the lower housing 106 to prevent radial fracture of the elastic ring 202 (for example, crushing) in the direction of the working hole 138 at its location in the lower body 106. As shown in figv, the protrusion 210 is compressed between the surface 314 and the outer surface 304 of the metal ring 204 at its location in the cavity 310 of the lower housing 106. Similarly, the sealing surface 208 is compressed between the surface 316 of the lower housing 106 and the outer surface 304 of the metal ring 204.

During use, the plunger 140 tightly interacts with the sealing surface 206 of the elastic ring 202 to stop the flow of fluid between the inlet 132 and outlet 134. In this example, the cross-section of the plunger 140 that interacts with a sealing surface 206 has a knife-like shape 318. But in other examples, the cross-section of the plunger 140 may have any other suitable shape. When the plunger 140 moves in the direction from the sealing surface 206, fluid flows between the inlet 132 and outlet 134 through the opening 218 of the metallic ring 204. If the saddle 102 effect of high pressure and/or conditions for the formation of back pressure, the protrusion 210 forces the detent position and prevents you from moving or shifting of the seat 102 relative to the lower housing 106 and, thus, improves performance regulate the A.

Additionally, or in another embodiment of the invention during use, the protrusion 210 forces the latching position to prevent movement of the seat 102 relative to the plunger 140, if the plunger 140 has tripped or is he stuck to the sealing surface 206. For example, during use of the plunger 140 may interact with the sealing surface 206 of the seat 102 over a long period of time (for example, when the closed position, the controller 100). In the sharp edge 318 of the plunger 140 may stick or adhere to the sealing surface 206, for example, due to the leaching of compounds from the material of the elastic ring 202, which, thus, may cause the connection of the plunger 140 with the sealing surface 206 (for example, due to aging of the rubber). When moving the plunger 140 in the direction from the seat 102 in the open position, the protrusion 210 forces the detent position and prevents you from moving or shifting of the seat 102 relative to the lower housing 106.

Saddle valve 102 according to one implementation options are not limited for use with the described as an example of the controller 100 of the flow of fluid, shown in figure 1, 2A, 2B, 3A and 3B. In other examples, the seat 102 may be implemented with other regulators flow of the fluid control valves (e.g., linear to what apanemi, rotary valves, etc), and/or any other suitable devices for controlling the flow of fluid.

Although in the present description addresses only some of the embodiments of the device, the scope of protection of the present application is not limited to them. On the contrary, this application covers all devices and products, to a certain extent within the volume defined by the applied formula literally or under the doctrine of equivalents.

1. The valve seat with a force detent position for use with the control device a flow of fluid containing
metal ring and
elastic ring connected with a metal ring and having a sealing surface for sealing engagement with a work element that regulates the flow control device a flow rate of the fluid,
moreover, at least part of the outer surface of the elastic ring includes a circular protrusion for sealing engagement with a circular groove in the housing of the device control the flow of fluid media, with the inner surface of the elastic ring connected to the outer surface of the metal ring.

2. The valve seat according to claim 1, in which the elastic ring is formed over the metal ring.

3. The valve seat according to claim 1, in which the specified external surface m is a metallic ring includes an annular protruding edge for engagement with the annular groove of the inner surface of the elastic ring.

4. The valve seat according to claim 1, in which the sealing surface is configured to interact with the plunger valve controls the flow of fluid.

5. The valve seat according to claim 1, in which the elastic ring friction way connected with the housing of the device control the flow of fluid.

6. The valve seat with a force detent position for use with flow regulator fluid containing
essentially rigid supporting element is connected to the essentially elastic sealing element, the inner surface of which is connected to the outer surface of the support element, and at least part of the outer surface of the sealing element has a first outer diameter and a second outer diameter that is greater than the first outer diameter for forming at least one protruding element to hold the valve seat in the body of the flow regulator of the fluid at the specified sealing element essentially surrounds the specified reference element.

7. The valve seat according to claim 6, in which the protruding element configured to interact with a circular groove in the body of the flow regulator of fluid.

8. The valve seat according to claim 7, in which the protruding element is designed for pressfit into a circular groove in the housing of the regulator of the RAS is an ode to the fluid medium.

9. The valve seat according to claim 6, in which the outer surface of the support element further comprises an annular protruding edge for engagement with the annular groove in the inner surface of the sealing element.

10. The valve seat according to claim 6, in which the supporting element is a metal ring, and the sealing element is an elastic ring.

11. The valve seat according to claim 6, in which the sealing element is designed with the possibility of a hermetically sealed from the fluid interaction with the plunger valve flow regulator fluid medium.

12. The flow regulator fluid containing
a housing having a shoulder formed by an annular cavity in the housing between the inlet and the outlet, and
a valve seat located inside the housing, and the valve seat contains
the first annular element and the
the second annular element connected to the first annular element to provide sealing surfaces for sealing engagement with a movable plunger control valve, and the second annular element comprises an outer protruding portion being in frictional engagement with the annular cavity so that the protruding portion cooperates with the shoulder of the housing to hold the valve seat in the housing, the ri first annular element has an outer exposed end, adapted to communicate with the annular groove of the inner surface of the second annular element.

13. The flow regulator of fluid indicated in paragraph 12, in which the valve seat friction way connected with the housing of the controller.

14. The flow regulator of fluid indicated in paragraph 12, in which the first annular element contains the metal ring and the second ring-shaped element includes an elastic ring.

15. Control flow of fluid through 14, in which the elastic ring contains a nitrile material, and a metal ring contains stainless steel.

16. The flow regulator of fluid indicated in paragraph 12, in which the plunger valve has a knife-like edge for sealing engagement with sealing surface for restricting fluid flow between the inlet and the outlet.



 

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Pressure regulator // 2490689

FIELD: machine building.

SUBSTANCE: regulator includes a housing with inlet and outlet cavities and between them a spring-loaded sensitive element in the form of a shell, a setting cavity with an elastic element, a seat, a shutoff element in the form of a disc with a conical surface. The housing is made of two halves in the form of bowls with flanging, and in it there introduced and installed with stiff connection is a cylinder with the above mentioned shell located in it with outer surface of the bottom towards the seat installed in the inlet cavity. A safety spring is introduced to prevent mismatch of the control system at abrupt opening of the network. Elastic element for spring loading of a sensitive element in the setting cavity uses working medium the pressure energy of which is controlled with a regulator.

EFFECT: enlarging application ranges.

1 dwg

FIELD: machine building.

SUBSTANCE: valve port comprises vale body, bearing valve port defining channel converging from inlet to outlet. Convergent channel minimizes effects of boundary layer separation to maximise port capacity. Said channel may be formed inside solid part to be screwed in valve body, or in cartridge fitted in valve body to slide and to be screwed therein. Fluid control device comprises also diaphragm drive furnished with control component arranged inside valve body to control fluid flow in said body.

EFFECT: ease of use maximised capacity at preset outlet pressure.

23 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: gas pressure control with a drive, a control valve and an auxiliary device. Information on outlet pressure is supplied to the drive and the auxiliary device by means of a Pitot tube located at the control valve outlet. End of the first nozzle of the Pitot tube is connected to the drive, thus providing communication between a control cavity of the drive and a membrane and outlet pressure at the outlet to maintain outlet pressure on the drive in compliance with the specified value. End of the second nozzle of the Pitot tube is connected to the auxiliary device, thus providing communication between internal area of the auxiliary device and outlet pressure at the outlet to respond to outlet pressure variations at deviation of outlet pressure from specified values of the range of normal pressure. There is a structural version of design of gas pressure control and a double-control mechanism for the above pressure control, automatic control of fluid medium pressure.

EFFECT: automatic fluid medium pressure control.

27 cl, 9 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

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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