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Shutoff separating device for pressure gauges

Shutoff separating device for pressure gauges
IPC classes for russian patent Shutoff separating device for pressure gauges (RU 2473061):
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FIELD: machine building.

SUBSTANCE: shutoff separating device for pressure gauges includes housing (1) with the first (2) and the second (3) chambers, with nozzles (10) for connection of the device to the pipeline and for connection of working pressure gauge. Valves (4), the movement of which is controlled with flywheels (5), are installed in chambers. The first pair of mutually perpendicular holes (12) attaches the pipeline cavity and the first chamber. The second pair of mutually perpendicular holes (13) attaches the first chamber and working pressure gauge. In housing there is an inclined hole (14) at an angle of 20° to the housing axis, which attaches the second pair of mutually perpendicular holes and the second chamber. One of the holes of the first pair of mutually perpendicular holes and inclined hole are passages in seats of valves. In the housing there is a threaded hole for connection of a test pressure gauge or gauge of working medium discharge from the device. Threaded hole is connected to the second chamber.

EFFECT: design of reliable shutoff separating device excluding the penetration of working medium to atmosphere.

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The invention relates to the field of engineering, namely to the valve, and is designed as a locking-release valve) to connect instrumentation (pressure gauges)that are installed on pipelines.

The well-known three-way valve steel for pressure gauge KM 1.00 (CJSC "AMAKS-gas, www.s-gaza.ru/catalogue/armature/tap/037), adopted as a prototype for the invention. The valve is designed for installation on pipelines transporting natural gas, liquid and steam phases of liquefied hydrocarbon gases as shut-off devices before instrumentation. Known valve includes a housing with first and second chambers. In cameras with the ability to move installed rods. Each rod has a seal and the groove for the sealing ring. The body is made saddle in the form of annular projections. The movement of the rods in the cells is carried out by rotation of the flywheel, interacting with the rods. The housing has a fitting with captive nuts to attach the device to the pipeline and measuring device. The body is made with a threaded hole to connect through the transition fitting of the control manometer or reset the working environment. The axis of the first and second chambers coincide with the first (main) axis of the housing. Axis two fittings match the give with the second axis of the housing. The valve body is made of two pairs of mutually perpendicular holes, and a hole connecting the second chamber with a threaded hole, with the first pair of mutually perpendicular holes connects the cavity of the pipe and the first chamber and the second pair of mutually perpendicular holes connects the first chamber, the working pressure gauge and the second chamber.

Typically, in known locking devices working fluid occurs under the valve seat.

In the well-known three-way valve steel for pressure gauge KM 1.00 axle hole, which connects the cavity of the pipe and the first chamber is offset from the axis of the passage seat. Therefore, the working environment is supplied to the valve. Over time, the ring seal that prevents the passage of the working medium from the first chamber into the atmosphere, can be damaged, and then there will be leakage of the working environment, the elimination of which would be difficult.

The objective of the invention is to develop a reliable device shut-off and separation, can prevent the penetration of the working environment in the atmosphere.

The technical result is achieved in that the device locking separator for pressure gauges includes a housing with first and second chambers, the axes of which coincide with the first axis of the housing. In cameras with the ability to move the valves with grooves. The housing has a fitting with nut is La attaching the device to the pipe and fitting with a nut to attach the working pressure gauge. The axis of the fittings coincide with the second axis of the housing. The body is made with a threaded hole for connecting the control pressure gauge or discharge of the working medium from the control gauge. The housing has a seat in the form of annular projections in the first and second chambers. Two of the flywheel, each of which has on the end surface of the eccentric hole, screwed on the housing so that upon rotational movement of each flywheel communicates with the groove of the corresponding valve for providing translational movement of the valve in the chamber. In the casing hole connecting the second chamber with the screw hole. The body is made of two pairs of mutually perpendicular holes, with the first pair of mutually perpendicular holes connects the cavity of the pipe and the first chamber and the second pair of mutually perpendicular holes connects the first chamber and the working pressure gauge. The axis of the first pair of mutually perpendicular holes coincide with the first and second axes of the body. While one of the holes in the first pair of mutually perpendicular holes, unlike the prototype, is the passage in the saddle in the first chamber. The axis of one of the holes of the second pair of mutually perpendicular holes parallel to the first axis of the housing and located outside the saddle in the first chamber. In the case at an angle of 20° to the first axis of the housing within the on the inclined hole, connecting a second pair of mutually perpendicular holes and the second chamber.

An example implementation of the device illustrated in Fig 1-4.

Figure 1 presents a top view (in section) of the device locking separator for pressure gauges.

Figure 2 presents left side view of the device locking separator for pressure gauges.

Figure 3 presents a top view (in section) of the device locking separator for pressure gauges.

4 shows the labeling of the device.

Device locking separator for pressure gauges ("device") contains:

1 - body;

2 - the first camera;

3 - second camera;

4 - valve;

5 - flywheel;

6 is a sealing element;

7 - ring;

8 - screw;

9 is an eccentric hole in the flywheel;

10 - fitting;

11 - nut spanner;

12 - the first pair of mutually perpendicular holes;

13 is a second pair of mutually perpendicular holes;

14 - inclined hole connecting the second pair of mutually perpendicular holes and the second camera;

15 is a threaded hole;

16 - tube;

17 - ring sealing;

18 - hole, connecting the screw hole and the second camera;

19 - marking products.

In the housing 1 is made of two symmetrical chambers 2 and 3, the axes of which coincide with the first (main) axis of the body (for example, the d-x). In the first chamber 2 and the second camera 3 can move are the 4 valves. Each valve has a groove for engagement with the flywheel 5, the sealing element 6 and the groove ring 7 that is designed to seal the gap between the valves and chambers. The saddle is made in the case and have the form of an annular ledge triangular profile. When closing the valve seat inserts are pressed into the sealing elements 6. The movement of the valves is effected by manual rotation of the flywheel 5, the transmitting movement of the valve 4. The flywheel 5 is screwed onto the housing 1 and fixed by screws 8, which prevents their complete undoing. On the face of each wheel is made eccentric hole 9 for contact with the valve.

The housing has two fitting 10 with coupling nuts 11, which are located symmetrically relative to each other. The axis of the fittings coincide with the second axis of the housing (for example, y-axis). The second axis of the housing perpendicular to the first axis of the housing and intersects it. One fitting with nut serves to connect the device to the pipeline, and another fitting with nut to plug in a working gauge.

In case the following openings:

- the first pair of mutually perpendicular holes 12, which connects the first chamber 2 and the cavity of the pipeline. When the axis of one of the holes of the first pair coincides with the second axis of the body (y-axis). Another hole of the first pair is the passage in the saddle in the first chamber 2, and its axis coincides with the first axis of the housing (axis x);

a second pair of mutually perpendicular holes 13, which connects the first chamber 2 and a working pressure gauge. When the axis of one of the holes coincides with the second axis of the body (y-axis)and the axis of another hole parallel to the first axis of the housing (x-axis) and is located outside the saddle in the first chamber 2;

- inclined hole 14 connecting the second pair of mutually perpendicular holes 13 and the second chamber 3 and located at an angle of 20° to the first axis of the housing (the x axis). An inclined hole 14 is the passage in the saddle in the second chamber 3;

- threaded hole 15, which serves to reset the working environment or connection of the control pressure gauge. A threaded hole 15 is plugged tube 16 with the seal 17. In the tube 16 with holes (not shown) for discharge of the working medium from the working pressure gauge;

- 18 hole connecting the second chamber 3 and the screw hole 15. The hole axis 18 parallel to the first axis of the housing (the x axis), and offset from it.

On the housing of the device is caused to indicate the manufacturer and item 19.

A control manometer is fixed directly on the device or through transitional devices (e.g., through a transition fitting). For this, remove the tube 16, the closing of threads is the first hole 15.

Device locking separator for pressure gauges works as follows.

The device is attached with fittings 10 with coupling nuts 11 to the pipeline and measuring instrument (pressure gauge). In the initial position the passages in the seat closed sealing elements 6 of the valve 4. This ensured the integrity of the device in which the working environment of the pipeline is not supplied to the first and the second camera device.

For measuring the pressure of the working medium working pressure gauge shall rotation of the first flywheel counterclockwise. The valve in the first chamber 2 is moved and opens the passage in the saddle (pass in the saddle in the second chamber 3 remains closed). The cavity of the pipe is communicated with a working pressure gauge via a first pair of mutually perpendicular holes 12, the first chamber 2 and a second pair of mutually perpendicular holes 13.

To test the working of the manometer (installation of a manometer to zero) close the passage in the saddle in the first chamber 2 (corresponding rotating the handwheel clockwise and open the passage in the saddle in the second camera 3 (perform the corresponding rotation of the handwheel counterclockwise). Unscrew one or two circulation tube 16 that covers the screw hole 15. The working medium from the working pressure gauge is reset through about what Versty (not shown), made in the tube. Then the pressure gauge should be set to zero.

For verication of the accuracy of measuring the working pressure gauge remove the tube 16 and is attached to the threaded hole 15 of the control gauge. Open the passages of both saddles (corresponding rotation of the flywheel). In this work the pressure gauge is connected with the cavity of the pipeline through the first pair of mutually perpendicular holes 12, the first chamber 2 and a second pair of mutually perpendicular holes 13. A control manometer connected to the cavity of the pipeline through the first pair of mutually perpendicular holes 12, the first chamber 2, a second pair of mutually perpendicular holes 13, the inclined hole 14, the second chamber 3, the hole 18 and the threaded hole 15. Compare the readings of the working pressure gauge and reference gauge. For proper operation of the manometer readings should be the same size.

Device locking separator for pressure gauges allows you to replace the control and measuring unit without disconnecting the working medium in the pipeline.

Device locking separator for pressure gauges, comprising a housing with first and second chambers, with fitting to attach the device to the pipeline, with a fitting to attach a working pressure gauge with a threaded hole for connection of control man is tra or discharge of the working medium from the working pressure gauge, with seats in the first and second cameras, cameras mounted valves with grooves, the axis of the first and second camera coincide with the first axis of the housing and the axis of the two fittings coincide with the second axis of the housing, two wheel, each of which has an eccentric hole on the end surface and is screwed onto the housing so that during rotation of the flywheel it communicates with the groove of the valve to provide translational movement of the valve in the chamber, two pairs of mutually perpendicular holes formed in the housing, and a hole connecting the second chamber with a threaded hole, with the first pair of mutually perpendicular holes connects the cavity of the pipe and the first chamber and the second pair of mutually perpendicular holes connects the first chamber and the working pressure gauge, characterized in that in the housing at an angle of 20° to the first axis of the body is inclined hole connecting the second pair of mutually perpendicular holes and the second chamber, the axis of the first pair of mutually perpendicular holes coincide with the first and second axes of the body, with one of the holes in the first pair of mutually perpendicular holes is the passage in the saddle in the first chamber, the axis of one of the holes of the second pair of mutually perpendicular holes parallel to the first axis of the housing and located outside the saddle in lane is the first camera.

 

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