System of pressure monitoring comprising several pressure relays

FIELD: measurement equipment.

SUBSTANCE: system of pressure monitoring comprises a body, a hole in a hydraulic system made in a body, the first pressure relay arranged inside a body and having a hydraulic connection with a hole in a hydraulic system, and the second pressure relay arranged inside the body and having a hydraulic connection with a hole in the hydraulic system. The method to build a system of pressure monitoring includes stages, when: the first pressure relay is installed inside the body so that the first pressure relay is in hydraulic connection with the hole in the hydraulic system, and the second pressure relay is installed inside the body so that the second pressure relay is in hydraulic connection with the hole in the hydraulic system.

EFFECT: expansion of functional capabilities of a pressure monitoring system.

12 cl, 5 dwg

 

The technical FIELD TO WHICH the INVENTION RELATES.

This invention relates to systems, pressure monitoring, and more particularly, to systems pressure monitoring with multiple pressure in the General case.

PRIOR art

The pressure switch is part of many application implementations on the management device by a predetermined pressure. For example, if a pressure switch is connected with a supply of fluid (liquid or gas), it can be switched on as soon as we announce the pressure reaches a predetermined threshold value. Similarly, a pressure switch can be turned off at pressures substantially below a predetermined threshold value. The opposite is true, in some cases, the pressure switch can be turned off when the reported pressure reaches a predetermined threshold value, and to turn on when the reported pressure will return to the bottom, a predetermined threshold value. Thus, it is possible to use a pressure switch to determine whether the fluid pressure is above or below a predetermined threshold value.

In some situations it may be necessary to maintain hydraulic pressure in a predetermined pressure range. To do this usually requires at least two pressure switches. The first pressure switch SP is really be able to monitor on the lower threshold pressure, including, if the hydraulic pressure drops below, for example, the lower threshold pressure. For monitoring upper threshold pressure can be equipped with a second pressure switch to turn on, if the hydraulic pressure exceeds the upper threshold pressure. If not enabled, no pressure, it is assumed that the hydraulic pressure is somewhere between the upper and lower threshold pressure. Figure 1 shows such a configuration.

Figure 1 shows a system 100 pressure monitoring that meets the prior art. System 100 pressure monitoring includes a hydraulic source 101 with two hydraulic hoses that go from the hydraulic source 101. Each of the hoses 107 or 108 connects the hydraulic source 101 and the corresponding relay 105 or 106 pressure. System 100 pressure monitoring is arranged to control the hydraulic pressure source 101 using the first relay 105 pressure and the second relay 106 pressure. Pressurized hydraulic source 101 may be associated with another device that uses pressure to perform any action. Each of the relay 105 or 106 pressure includes electrical contacts 109 which serve for communication with the outside the device, such as a processor (not shown), for transmitting or receiving signals indicating the switching status of the pressure switch. You can create relays 105 and 106 of the pressure force so that one pressure switch included with the lower threshold value of pressure and the other pressure switch included with an upper threshold pressure value.

Although the system 100 pressure monitoring in limited circumstances and may provide adequate results, one of the main problems of the above configuration is the need for redundant hydraulic coupling devices and/or hydraulic connections. For any holes as the relay 105 or 106 pressure, and a hydraulic source 101 requires a separate hydraulic coupling device. Each hydraulic coupling device not only increases the system cost, but also increases the number of potential leakage. Thus, the number of connections should be kept to a minimum. However, when you want two or more pressure switches, the number of connections can grow quickly. We would add that due to the fact that the system 100 pressure monitoring need at least three major node, i.e. the hydraulic source 101, the first relay 105 pressure and the second relay 106 pressure for the system 100 pressure monitoring will be required essentially the most the volume. In some applications the available amount may be so limited that requires reconfiguration of the entire system to accommodate the system 100 pressure monitoring. Add that each pressure switch is an independent element and, therefore, each pressure switch has its own electrical connector, which thus increases the number of response components. Therefore, it is clear that this solution has serious drawbacks.

The present invention overcomes this and other problems by creating a single unit pressure monitoring system, at least two separate pressure switch. The advantage is that it decreases the number of required connections, because it requires only connection to connect to the body.

The INVENTION

Created the pressure monitoring system according to a variant embodiment of the invention. The pressure monitoring system includes the body and is made in the case of the hole in the hydraulic system. The pressure monitoring system may also include a first pressure switch, located inside at least part of the housing and having hydraulic connection with a hole in the hydraulic system. The pressure monitoring system may also include a second pressure switch, located inside at least part of the body and the abuser hydraulic communication with a hole in the hydraulic system.

How to create pressure monitoring system presents one of the variants of the invention. The pressure monitoring system includes the body and is made in the case of the hole in the hydraulic system. This method includes a step of installing the first relay pressure inside at least part of the housing so that the first pressure switch was in hydraulic communication with a hole in the hydraulic system. This method also includes a step of installing a second pressure inside at least part of the housing so that the second pressure switch was in hydraulic communication with a hole in the hydraulic system.

ASPECTS of the INVENTION

According to the aspect of the invention, the pressure monitoring system contains:

- body;

- made in the housing hole in the hydraulic system;

the first pressure switch, located inside at least part of the housing and having hydraulic connection with a hole in the hydraulic system; and

the second pressure switch, located inside at least part of the housing and having hydraulic connection with a hole in the hydraulic system.

Preferably, the pressure monitoring system further comprises a first pressure switch hole in the enclosure with the opportunity to take the first relay pressure, and, at least for the second pressure switch hole in the housing, the implementation of the tion with the opportunity to take a second pressure switch.

Preferably, the pressure monitoring system further comprises a fluid channel formed in the housing and providing a hydraulic path connecting the opening in the hydraulic system with the first and second pressure switch.

Preferably, the pressure monitoring system further comprises an electrical connector led out from the housing for communication with the first pressure and the second pressure switch.

Preferably, the pressure monitoring system further comprises:

the first controller is configured to configure the threshold pressure for actuation of the first relay pressure; and

the second controller is configured to configure the threshold pressure for actuation of the second pressure switch.

Preferably, one of the first and second pressure switch is a standby pressure switch, with the first and second pressure switch configured to actuate at essentially the same pressure.

According to another aspect of the invention, a method of creating pressure monitoring system, includes case and is made in the case of the hole in the hydraulic system, includes the following steps:

the location of the first relay pressure in at least part of the housing so that the first pressure switch was in hydraulic communication with the hole is m in the hydraulic system; and

the location of the second relay pressure in at least part of the housing so that the second pressure switch was in hydraulic communication with a hole in the hydraulic system.

Preferably, the mounting point of the first pressure switch contains an insert of the first pressure switch into the hole made in the casing for the first relay pressure at this stage of the installation of the second pressure switch contains an insert of the second pressure switch in the hole made in the casing of the second pressure switch.

Preferably, the fluid channel formed in the housing, provides the hydraulic connection holes in the hydraulic system with the first and second pressure switch.

Preferably, the method further contains the steps of removing the electrical connector from the housing and providing electrical connection through the electrical connector with the first pressure and the second pressure switch.

Preferably, the method further comprises the following steps:

setting the first pressure switch for actuation when the first threshold pressure;

and setting a second pressure switch for actuation when the second threshold pressure.

Preferably, one of the first and second pressure switch is a standby pressure switch, and first and second pressure switches mood is s to actuate when, essentially the same pressure.

BRIEF DESCRIPTION of FIGURES

Figure 1 shows the pressure monitoring system according to the prior art.

Figure 2 shows the pressure monitoring system according to the variant implementation of the invention.

Figure 3 shows the cross section of the pressure monitoring system according to the variant implementation of the invention.

Figure 4 shows another cross-section of the pressure monitoring system according to the variant implementation of the invention.

Figure 5 partially shows a cross-section of the pressure monitoring system according to another implementation variant of the invention.

DETAILED description of the INVENTION

Figure 2-5 and the following description show concrete examples to clarify the specialists in the art how to make and apply the best variant of the invention. For purposes of explanation meets the invention principles, some well-known aspects are simplified or omitted. Specialists in the art will understand the modifications of these examples, which fall under the scope of this invention. Specialists in the art will realize that the following elements can in various ways be combined to create numerous variants of the present invention. As a result, the invention is not limited to the following examples, but only by the claims and its equivalents.

On IG shows a system 200 pressure monitoring according to a variant implementation of the invention. The system 200 pressure monitoring includes a housing 201, a hole 202 in the hydraulic system (not visible in figure 2), the electrical connector 203, two or more holes 230 and 231 to the pressure switch, and two or more relays 204 and 205 pressure. At that time, as the figures shows only the relays 204 and 205 pressure, we need to understand that you can also use more than two pressure switches.

The system 200 pressure monitoring, and more specifically, the hole 202 in the hydraulic system, can be associated with many devices, which include the fluid under pressure. Therefore, the hole 202 in the hydraulic system can be associated with a hydraulic source 101 under pressure. In the shown embodiment, the hole 202 in the hydraulic system hydraulically connected with the hydraulic source 101 via a hydraulic connecting device 107. Fluid under pressure - this may be gas, liquid or a combination thereof. Fluid may cover a portion of the different systems, which include, but are not in a restrictive sense valve systems, actuators, brake systems, such as the braking system of a railroad car, etc. Scope of the present invention can in no way be limited to the particular system associated with the fluid medium. When the system 200 pressure monitoring associated with the environment, fluid under pressure is eat acts on the first and second relays 204 and 205 pressure, to either enable or disable the corresponding relay (see Figure 4). Thus, the system 200 pressure monitoring may signal when the pressure of the fluid reaches a threshold. For the purposes of the present invention it is not important what exactly the action takes place in response to the actuation of the relay, and therefore should not limit the scope of the present invention.

According to a variant implementation of the invention, it is possible to adjust the relays 204 and 205 pressure. For example, the threshold pressure at which trigger the relays 204 and 205 pressure can be adjusted using the sliders 206 and 207, respectively. Preferably, the threshold value of the pressure actuation of the first relay 204 pressure may differ from the threshold pressure of the second relay 205 pressure, for example. On the other hand, you can choose relays 204 and 205 pressure on the already defined values their threshold pressure. And if the threshold pressure needed to change, it is possible relays 204 and 205 pressure to change to other relays with suitable pressure.

According to a variant implementation of the invention, it is possible to use the first relay 204 pressure to show that the pressure within the system 200 pressure monitoring has reached the lower threshold and the second relay 205 pressure can be used to show that Yes the pressure within the system 200 pressure monitoring exceeded the upper threshold value. This configuration may be useful in situations when you want to maintain a pressure medium in a pressure range and when neither low nor high values of the pressure outside the pressure range is undesirable. The electrical connector 203 may include one or more contact groups 208, each of which can be used for communication system 200 pressure monitoring multiple devices, such as the processing system, the CPU, the other circuit, or, for example, a safety deflector valve. But we should not limit this invention the above devices, the contact group 208 can attach system 200 pressure monitoring any number of other devices.

Figure 3 shows a cross-section of the system 200 pressure monitoring according to the variant embodiment of the invention, obtained by the line 3-3 in figure 2. Visible in figure 3 was a hole 202 in the hydraulic system. Although the hole 202 in the hydraulic system shown is made in the bottom of the housing 101, it is necessary to understand that the hole 202 in the hydraulic system can be run on any side of the housing 101, and the scope of the present invention should not be limited to its specific location. As you can see, the hole 202 in the hydraulic system is in hydraulic communication with both the first relay 204 pressure, and with the second relay 205 pressure through the GI is replicase channel 315, which forks to the two holes 230 and 231 for pressure. Consequently, the flow included in the system 200 pressure monitoring through the hole in the hydraulic system 202, acts on the first relay 204 pressure, and the second relay 205 pressure essentially equal values of pressure. It is easy to understand that you only need one pipe connection between the connected devices, such as a hydraulic source 101 and the system 200 pressure monitoring. This differs from the devices belonging to the prior art, which required several pipe connections when using multiple pressure switch. The advantage is that the present invention allows to reduce the number of pipe connections minimize the number of pressure switch. The hole 202 in the hydraulic system may have a threaded surface for receiving the tubing connections, or, on the other hand, any pipe connections can be associated with a hole 202 in the hydraulic system in accordance with other well-known methods. The specific method used to summarize the medium under pressure to the hole 202 in the hydraulic system, not important for the purposes of this invention and, therefore, cannot limit the scope of the present invention.

In the shown embodiment, the implementation of the holes 230 and 231 for relativley formed in the housing 101 and is executed with a possibility to accommodate a pressure switch, such as relays 204 and 205 pressure. Relay 204 and 205 pressure can be inserted into the holes 230 and 231 for pressure. One or more elements of the seal 316 may provide for fluid tight sealing between the relays 204 and 205 pressure, as well as their corresponding holes 230 and 231 for pressure. Thanks to the seals 316 may, if required, easy to remove relays 204 and 205 pressure. According to other alternative implementations, the relay 204 and 205 pressure is possible by known methods practically forever connected with holes 230 and 231 for pressure. However, if you provide a removable connection of the relay 204 and 205 pressure and holes 230 and 231 for pressure, it becomes possible to easily swap or replace relays 204 and 205 pressure. This allows you to easily configure the system 200 pressure monitoring for adaptation to a wider range of pressures.

In the shown figure 3 implementation of the relays 204 and 205 pressure contain floating pistons 310 and 311, as well as shifting elements 312 and 313. Shifting elements 312 and 313 are shown as made in the form of springs, but you should understand that you can use other shifting elements, and the invention should not be restricted only by the use of springs. Moreover, it should be understood that the relays 204 and 205 pressure is shown merely as examples, and you can use a great deal of the capture fisheries of the different types of pressure switches, such, for example, deployed from the bending of the diaphragm. Moreover, the specific pressure that were shown and discussed, can not limit the scope of the present invention.

According to a variant implementation of the invention, the relay 204 and 205 pressure include controllers 206 and 207. The controllers 206 and 207 can move the hook elements 312 and 313 for adjustment of the threshold pressure at which trigger the relays 204 and 205 pressure. According to the illustrated implementation variant of the invention, can be added to the configuration of the controllers 206 and 207, for example, to regulate the compression of the shifting elements 312 and 313. According to the illustrated implementation variant of the invention, the controllers 206 and 207 can catch hold of the thread of the relay 204 and 205 pressure, so that rotation in one direction raises the regulator to reduce the compression ratio shifting element, while rotation in the other direction lowers the regulator to increase the compression of the shifting element. How easy it is to understand that decreasing the compression ratio shifting elements 312 and 313 is reduced and the threshold pressure required to impact on the pistons 310 and 311. Conversely, increasing the compression ratio shifting elements 312 and 313 is increased and the threshold pressure required to impact on the pistons 310 and 311. Other types of regulators is also possible the s, and, consequently, specifically shows the controllers 206 and 207 may not limit the scope of the present invention. For example, the pressure adjustment operation may contain the adjustment square, which operates a fluid medium. It's easy to understand that the regulation of surface exposed to the pressure switch will adjust the force for the pressure acting on the pressure switch.

According to a variant implementation of the invention, the threshold pressure at which turns on the first relay 204 pressure differs from the threshold pressure at which turns on the second relay 205 pressure. More specifically, according to a variant implementation of the invention, the first relay 204 pressure can be configured to be turned on when the pressure reaches the lower threshold. Therefore, during normal operation, when the pressure is above the lower threshold, the first relay 204 pressure can be turned off. Turning on the first relay 204 pressure may send a signal indicating that the system pressure has fallen below the required values.

According to this implementation variant of the invention, the second relay 205 pressure can be configured to be turned on when the pressure reaches the upper threshold value. In other words, the second relay 205 pressure will be off during normal operation, when the pressure on the system is below the upper threshold. Therefore, the inclusion of the second relay 205 pressure may send a signal indicating that the system pressure has exceeded the required value. According to a variant implementation of the invention, the lower threshold pressure value and the upper threshold pressure can be divided into the desired working pressure range. Therefore, the system can be specified tolerance pressure defined between the lower threshold pressure value and the upper threshold pressure. Preferably, if neither the first pressure or the second pressure switch is not enabled, the system 200 pressure monitoring may show that the system pressure is within an acceptable operating range.

Figure 4 shows another cross-section of the system 200 pressure monitoring according to a variant implementation of the invention, obtained along the line 4-4 in figure 2. Figure 4 shows the Electromechanical switch 420, interacting with relay 205 pressure. It should be understood that the relay 204 pressure may similarly include a similar switch, which is not visible on the figures. According to this implementation variant of the invention, the switch 420 includes an Electromechanical switch such as a microswitch. However, you can use other types of switches, and the selection of a particular switch does not need the n to limit the scope of the present invention. As you can see, the Electromechanical switch can be associated with electrical connector 203, for example, a conductor 421. Therefore, the electrical connector 203 allows Electromechanical switch 420 to communicate, for example, from an external device. It should be understood that the relay 204 pressure similarly includes an Electromechanical switch, which can also be tied into the electrical connector 203. The advantage is that the output from the housing 201 need only one electrical connector 203, although the system 200 pressure monitoring can be enabled for more than one pressure switch. As a result, reducing the amount of wiring required to connect to the system 200 pressure monitoring.

In the current state to the hole in the hydraulic system can be attached hydraulic coupling device. It should be understood that in some embodiments, the implementation requires only one hydraulic connection device that reduces, therefore, the number of hydraulic connecting devices to one regardless of the number of used pressure switch. However, in some implementations may provide more than one hole in the hydraulic system. For example, there may be provided more than one hole in the hydraulic system for receiving hydraulic connector the output devices of different sizes. One advantage of this invention is the fact that the number of potential leak is significantly less in comparison with the prior art. Moreover, it should be understood that the system cost can be reduced. After joining the hydraulic connection of the device to the hole 202 in the hydraulic system, fluid can be passed into the system 200 pressure monitoring. The pressure transmitted to the system 200 pressure monitoring can work with almost equal pressures on both relays 204 and 205 pressure. Relay 204 and 205 pressure can be set to the desired threshold pressure, using, for example, controllers 206 and 207. According to a variant implementation of the invention, the first relay 204 pressure is configured to actuate when the lower threshold pressure value, and the second relay 205 pressure is configured to actuate when the upper threshold pressure value. However, it should be understood that the pressure can vary from one application to another. For example, some implementations may require that the first relay 204 pressure worked at the first pressure and the second relay 205 pressure worked at the second pressure, where both the first and second pressure switches are located above the normal working pressure. Therefore, the inclusion of the first curve is 204 pressure initiates the alarm state, while the inclusion of the second relay 205 pressure can initiate, for example, emergency shutdown. On the other hand, both relays 204 and 205 pressure can be set to actuate when the pressure below the normal operating pressure and, therefore, to indicate a pressure loss. As another alternative implementation, both relays 204 and 205 pressure can operate at the same pressure. Thus, the system 200 pressure monitoring might contain a spare pressure switch on the case when the useless one of the pressure switch. Use a spare pressure switch may be required in some implementations, for various security reasons.

According to a variant implementation of the invention, when the relay 204 and 205 pressure configured to actuate when the lower threshold pressure value and the upper threshold pressure, the system 200 pressure monitoring can determine whether the operating pressure within a predetermined operating range. Therefore, in normal operation, the working pressure will be great enough to overcome the force of bias in recall of the element 312. Consequently, the piston 310 is elevated relative to the positions shown in the drawings. On the other hand, due to the fact that the power offset of the shifting element 313 is configured N. is triggered when the upper threshold pressure, normal operating pressure is insufficient to overcome the force of bias in shifting element 313. Therefore, the piston 311 will be practically in the same position as shown on the drawings.

If during normal operation the operating pressure falls below a predetermined lower threshold pressure, the shifting element 312 will overcome the lower pressure, which will return the piston 310 in the position shown in the drawings. According to a variant implementation of the invention, the movement of the piston 310 may affect the Electromechanical switch 420. Therefore, the system 200 pressure monitoring may signal that the operating pressure has fallen below the lower threshold pressure.

On the other hand, is an operating pressure to exceed the upper threshold pressure, the pressure will cause shifting element 313 of the second relay 205 pressure to act on a piston 311. When triggered, the piston 311, Electromechanical switch 420 is also activated, thereby indicating that the operating pressure exceeded the upper threshold pressure. When action is taken to reduce pressure and working pressure again drops below the upper threshold pressure, then shifting element 313 will again overcome the operating pressure that will return the piston 311 in his first of the touch position, shown on the drawings.

Figure 5 shows the partial section of the system 200 pressure monitoring according to another implementation variant of the invention. Removed part of the housing 201 figure 5 to show the internal elements of the system 200 pressure monitoring. Shown in Figure 5 implementation, the relay 204 pressure and 205 are connected with the interior of the housing 201, however, the case does not include a separate hole for pressure, as in the previously described implementations. Rather, the housing 201, in fact, surrounds the relays 204 and 205 pressure. However, it should be understood that due to the fact that both relays 204 and 205 pressure positioned within a housing 201 and are in hydraulic connection with a single hole 202 in the hydraulic system, the number of hydraulic connections already reduced to one, while the space occupied by the system 200 pressure monitoring, to maintain a minimum.

In addition to the elements shown in previous figures, figure 5 shows a separate electrical inputs 560 and 561. Electrical inputs 560 and 561 can be electrically connected to an electrical connector 203 to the system 200 pressure monitoring was the only electrical connector 203.

As described above, this invention enables the system 200 pressure monitoring, which includes more than one relay 204 and 205 pressur is I, to fit inside a single housing 201. According to a variant implementation of the invention, the housing is connected with a hydraulic source 101 under pressure, using a single hole 202 in the hydraulic system. The advantage is that the number of hydraulic connecting device attached to the system 200 pressure monitoring, can be significantly reduced. In some embodiments of the assembled within the fluid channel 315 provides a connecting path between the hole 202 in the hydraulic system, and relays 204 and 205 pressure. Thus, each relay 204 and 205 pressure can connect with a single hole 202 in the hydraulic system, without requiring additional hydraulic connection devices. Additionally, the system 200 pressure monitoring may include a single electrical connector 203, derived from the housing 201. Each of the relays 204 and 205 pressure can be connected to an electrical connector 203. This allows each relay 204 and 205 pressure to link with an external device, limited to only one necessary connection. Therefore, the total number of connections required to implement the system 200 pressure monitoring, significantly less in comparison with the prior art. However, the performance of the system 200 of monitoring pressure in a sacrifice is not offered, despite the fact that mn is the number of threshold pressures can still be subjected to monitoring.

Detailed descriptions of the above implementation does not exhaust all the embodiments, which are provided by the inventors as appropriate under the scope of this invention. Indeed, specialists in the art will understand that some elements of the above-described embodiments of the invention can variously be combined or eliminated for additional embodiments of the invention, and such additional options for implementation fall under the scope of the present invention or are among his ideas. Specialists in the art should be obvious that it is possible to combine the above options for implementation in whole or in part to create additional implementation options that fall under the scope of the invention or refer to his ideas.

Thus, while specific implementations and examples of the present invention are described here as examples, a valid various equivalent modifications within the scope of the present invention, clear to experts in the given field of technology. The ideas presented in this paper can be applied to other pressure switch, and not only in those implementations that described above and shown in the attached figures. Accordingly, the volume invented what I should be determined according to the following claims.

1. The system (200) pressure monitoring, comprising: a housing (201);
the hole in the hydraulic system (202), made in the housing (201);
the first relay (204) pressure, located inside at least part of the housing (201) and with hydraulic communication with the hole (202) in the hydraulic system; and
the second relay (205) pressure, located inside at least part of the housing (201) and with hydraulic communication with an aperture (202) of the hydraulic system.

2. The system (200) according to claim 1, additionally containing a hole (230) for the first pressure switch, made in the housing (201) with the possibility of placing the first relay (204) pressure, and at least a hole (231) of the second pressure switch made in the housing (201), with the possibility of placement of a second relay (205) pressure.

3. The system (200) according to claim 1, additionally containing a fluid channel (315)made in the housing (201) and provides a path of hydraulic connection between the hole (202) in the hydraulic system and the first and second relay (204 and 205) pressure.

4. The system (200) according to claim 1, additionally containing the electrical connector (203)led out from the housing, which is connected with the first relay (204) pressure and with the second relay (205) pressure.

5. The system (200) according to claim 1, additionally containing:
the first controller (206), is made with a possibility to adjust the threshold pressure for the first relay (204) pressure; and the second regulato is (207), made with the possibility to adjust the threshold pressure for the second relay (205) pressure.

6. The system (200) pressure monitoring according to claim 1, in which one of the first and second relay (204 or 205) pressure is a spare pressure switch, with both the first and the second relay (204 and 205) pressure configured to actuate at essentially the same pressure.

7. The method of constructing the system (200) pressure monitoring, which includes the body and is made in the case of the hole in the hydraulic system, comprising stages, which are:
set the first relay pressure inside at least part of the housing so that the first pressure switch was in hydraulic communication with a hole in the hydraulic system; and
install second relay pressure inside at least part of the housing so that the second pressure switch was in hydraulic communication with a hole in the hydraulic system.

8. The method according to claim 7, in which at the stage of installation of the first pressure switch inserts the first relay pressure in the hole of the first pressure switch, made in the case, while at the stage of installing a second pressure switch inserts a second pressure switch in the hole of the second pressure switch, is made in the case.

9. The method according to claim 7, in which the fluid channel formed in the housing, provides the hydraulic connection response is participation in the hydraulic system with the first and second pressure switch.

10. The method according to claim 7, additionally comprising stages at which output electrical connector from the housing and provide an electrical connection through the electrical connector with the first pressure and the second pressure switch.

11. The method according to claim 7, additionally comprising stages, which are:
configure the first relay pressure for actuation when the first threshold pressure; and
configure the second pressure switch for actuation when the second threshold pressure.

12. The method according to claim 7, in which one of the first and second pressure switch is a standby pressure switch, and the like, and the first and second pressure switch configured to actuate at essentially the same pressure.



 

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22 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: gas regulator comprises diaphragm and threaded elements including: case, adjusting screw and cover from nonmetallic thermoplastic material with moulded different-diameter threads. Case is jointed to cover by larger-diameter thread. Adjusting screw is fitted in cover by smaller-diameter thread while moulded threads on cover feature equal pitch and arranged coaxially. Note here that one of said elements has moulded thread. All elements are made from glass-filled polyamide with polyamide content of 64-75 wt %.

EFFECT: lower costs at higher quality, lower weight.

4 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: method is proposed to determine pressure in a combustion chamber, in particular, in an internal combustion engine chamber, at the same time in it a device is used to determine pressure in the combustion chamber, which comprises at least one heating rod (5), at least one metering element (4), at least two spring membranes (1, 2) and at least one tubular body (6), at the same time the specified spring membranes (1, 2) are installed concentrically around the heating rod (5). Due to the possibility of double direction of the heating rod with the help of two spring membranes, and also due to arrangement of metering and reference elements in the neutral plane, the proposed ignition plug providing for the possibility of pressure measurement is free from action of side oscillations and other deformations.

EFFECT: simplified design, reduced perception to side oscillations and elimination of effect at a metering element of external deformations with provision of higher concentricity between a heating rod and a body.

7 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: gas pressure control valve comprises a casing, a spring-loaded sensitive element in the form of a diaphragm with a disk and a throttle valve with a seat. The said diaphragm consists of metal layers one of which on the regulated pressure side is made of weld steel and is welded to the casing and the disk of the diaphragm on the outer and inner profile respectively while the other layers are made of springy steel.

EFFECT: improvement of operation accuracy and cycling durability of the control valve under high working gas pressure.

2 dwg

FIELD: measurement equipment.

SUBSTANCE: microbarograph includes a horizontal balanced pendulum with two equally spaced inert masses, one of which is hollow. A small air capillary is introduced to hollow mass. Microbarograph includes a container with a large air capillary, into which the horizontal balanced pendulum itself is placed. Oscillation converter of the pendulum system to a digital signal is made by installation of LCCD-line on the hollow mass and a container-laser on inner surface. Beam trajectory will pass accurately along LCCD-line at oscillation of the pendulum.

EFFECT: improvement of conversion accuracy of oscillations of atmospheric pressure with controlled bandpass.

1 dwg

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture and can be used in production of, diagnostics of technical condition and maintenance of milking machines. To measure the pressure of teat cup liner on the dug when its closing the pressure is determined spent for deformation of the artificial dug, the excess air pressure is measured in the cavity of the artificial dug placed in the teat cup. The pressure of teat cup liner on the dug is determined as the sum of pressure spent for deformation of the artificial dug and the excess air pressure in the cavity of the artificial dug during the compression stroke of teat cup liner. The device for implementing the described method comprises a housing 1, an artificial dug 2, which inner cavity communicates with the pressure gauge 3 and the atmosphere through the valve 4, and the calibration unit of the artificial dug which comprises a chamber 5 with a nut 6, a pressure gauge 7 and a manual pump 8.

EFFECT: use of the invention enables to simplify and improve the accuracy of the method of measuring the pressure of the teat cup liner on the dug during its closing.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: strong spring 7 fitted on spherical bearing 10 transmits its force to membrane 4 via disc 8 located thereon and provided with ledge 9 to rule out membrane skew decreasing cycle life. Prior to tightening spring 7 by screw 11, damper plate 5 is centred at plate spring 6 and contracted by spring force to maintain invariable friction during pressure control valve operation thanks to uniform butt between plate 5 and faces of plate spring 6. Pusher 3 is rigidly arranged inside and at the centre of ledge 9 of disc 8 to transmit force to valve 2 composed of ball to ensure precision of maintained controlled parameters so that valve warp.

EFFECT: higher stability and precision.

1 dwg

Reducer // 2468347

FIELD: machine building.

SUBSTANCE: invention may be used in various fields of industry for reduction of gas pressure to the specified value and automatic maintenance of the specified pressure under cryogenic temperatures of working medium, in particular, when testing various devices with "cold" helium. In a reducer comprising a body, inlet and outlet nozzles, a filter at the inlet, a membrane unit with a loading spring, resting against a plate pressed with an adjustment screw, installed in a sleeve, a seat, a lever on an axis, fixed in the body, interacting with a needle to change the seat throughput section, according to the invention the membrane of the membrane unit along the outer diametre has flanging, for which a circular groove is arranged in the sleeve, at the same time on the membrane flanging at both sides there are rings fixed by means of welding, besides, the inner ring interacts with the sleeve, and the outer ring via a conical sealing gasket - with the reducer's body, in which there are semicircular stops that limit membrane sagging under action of a loading spring, and there is a damping unit, the stem of which, arranged at one axis with the membrane unit, at one side interacts with a spring-loaded split bushing, at the other - via a hinged joint is connected with a lever and a membrane unit, besides, between conical surfaces of the adjustment screw and plate there is a ball, at the outlet of the reducer there is a filter.

EFFECT: using reducer under cryogenic temperatures with provision of stability of its operation and tightness when operating with cold helium.

2 cl, 4 dwg

FIELD: instrument making.

SUBSTANCE: indicating pressure gauge comprises a signal device, an pointer indicator, a holder to fix pressure gauge elements and to connect it to the measured medium, induction position sensors arranged on indicators of minimum and maximum border values. In the pressure gauge there is a metal screen installed for actuation of induction sensors on the holder. The pointer indicator is installed onto the axis of rotation with the help of an axial cylinder. The axial cylinder has a lower part adjacent to the pointer of larger diameter, and an upper part of smaller diameter. A cylindrical axial ring of the metal screen holder that freely rotates on the upper part of the axial cylinder is placed onto the upper part. The metal screen holder tail is connected to the lower part of the axial cylinder with the help of a spring connector. On the pointer indicator there is a magnetic catch of the metal screen.

EFFECT: expansion of indicating pressure gauge functional capabilities.

3 dwg

FIELD: physics.

SUBSTANCE: in the disclosed method of stabilising nano- and micro-electromechanical system of a thin-film tensoresistor pressure sensor, the tensoresistors are heated with pulsed electric current after sealing the inner cavity of the detecting element of the sensor while simultaneously applying onto its receiving cavity the maximum allowable measured pressure and the minimum allowable operating temperature, as well as the maximum allowable measured pressure and the maximum allowable operating temperature. Thermal stabilisation is carried out at temperature which is 1.05 times higher than the maximum allowable operating temperature. The initial output signals during stabilisation are measured at high supply voltage. The rate of change of the initial output signal is controlled based on the ratio of the rate of change of the adjusted values of the initial output signals during the last and the second last measurement of the initial output signal during thermal stabilisation, respectively.

EFFECT: high stability of the initial and nominal output signal of thin-film tensoresistor pressure sensors and detecting hidden defects of tensoresistors at different manufacturing stages.

FIELD: physics.

SUBSTANCE: manometre has a cylindrical housing inside of which there is a holder which ends with a socket piece for connection to the measured pressure from outside the housing, a Bourdon spring and a protective transparent glass which is disc shaped and is placed over a dial plate with a scale and a pointer on which there is a shutter. The shutter is made from opaque material in form of a thin-walled hollow cylinder, the lower base of which is made from a thin-walled circular plate and which lies perpendicularly. The diametre of the hollow cylinder of the shutter is lies along the medial line of the pointer. The pressure limiting value sensor is mounted on the pressure limiting value pointer which is placed over the shutter and mounted on an axle resting on the cantilever span of an L-shaped arm in line with the pinion axis, and constructively has limitations in establishing angle values of up to 180. The base of the arm is fixed using two screws on the face of the dial plate.

EFFECT: wider range of operation of the sensor mounted on the pointer of limiting pressure values.

3 dwg

FIELD: physics, measurements.

SUBSTANCE: invention relates to pulsed hardware intended for gaining information about parasitic emissions in lines with uniformly distributed parametres and can be used to reveal the pressure pipeline insulation and walls with the help of acoustic waves and E00-type electromagnetic sounding waves. The proposed device differs from known ones in that the pressure emergent drop alarm incorporates electromagnetic reflectors of the E00-type surface waves arranged on opposite ends of pipeline under control and a reflectometre with wire-counter balance connected with the pipeline wall controlled part. Note here that aforesaid insulated wire-counter balance is arranged perpendicular to the pressure pipeline wall in the ground plane, the reflectometre casing being isolated from the ground. Since the said reflectometre records the waves propagating both inside the pressure pipeline (hydraulic shock wave) and on over its surface (E00-type surface electromagnetic wave).

EFFECT: efficiency and accuracy of revealing pressure pipeline insulation and wall faults are increased.

1 dwg

FIELD: measurement technology.

SUBSTANCE: transducer can be used for measuring static pressure in liquid flows having unknown direction. Transducer for measuring static pressure in grainy layer has shallow tube provided with side slit. Sizes of slit are preset by conditions of capillary impassability of liquid. Transducer is made of several small balls to follow the geometry of disposition of units among which the pressure should be measured.

EFFECT: improved precision of measurement.

2 dwg

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