RU2525380C1 - Device for emergency pipeline shutdown - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: device for emergency shutdown of a pipeline comprises a casing 1, a valve 2, a valve seat 3 and a valve return mechanism. The casing is equipped by a supply pipe branch 4 and a discharging pipe branch 5 for the connection to supplying and discharging sections of the pipeline. The valve seat 3 is installed across the casing flow passage and the valve is coupled to the valve return mechanism by a stem 6. The valve is mounted on the side of the supplying pipe branch 4 and is fixed on the stem 6. The stem is installed in the casing guides in a movable way. The return mechanism includes a seal 7, an adjustable support 8, a safety device 9 and a supporting cup 10. The seal is fixed in the casing. The adjustable support is movably installed in the supporting cup 9 on the safety device 10 from hard soluble material. The safety device is set on the bottom of the supporting cup where holes for spilled liquid are provided. The supporting cup is set on the floor of the room being monitored. The casing 1 is made as a cylinder closed by covers 11, 12 with sealing rings 13 which are tightened by studs 14 and nuts 15.

EFFECT: higher reliability of a device.

5 cl, 4 dwg

Description

The invention relates to piping systems and can be used for their automatic shutdown in the event of a spill of transported liquids.

A device for emergency shutdown of the water supply according to the patent RU 2232852, IPC: E03C 1/242, E03C 1/00, G05D 7/00, published July 20, 2004. The device comprises a housing, a solenoid valve, water sensors and a control unit. The casing is equipped with supply and consumable pipes for connecting to the supply and consumable sections of the pipeline, the solenoid valve is installed in the casing, water sensors are located under the water fittings and are connected to the solenoid valve through the control unit.

The device is not adapted to work without an electric current source, it differs in the complexity of installation and the high cost of manufacture.

As a prototype, a device has been adopted for protecting rooms from flooding from a water supply network according to the USSR author's certificate No. 1678991, IPC E03C 1/04, published on September 23, 1991. The device comprises a housing, a valve, a valve seat, and a valve return mechanism. The casing is equipped with supply and consumable pipes for connection to the supply and consumable sections of the pipeline. The valve seat is mounted across the flow part of the housing. The valve is located on the side of the supply pipe and is connected by a rod to the return mechanism, which is made in the form of a bellows, fixed hermetically in the lower part of the housing.

A disadvantage of the known device is its low reliability with increasing water pressure and / or an open water taps, when the pressure and / or flow rate of the liquid prevents the valve from landing.

The problem solved by the invention is to ensure the failure-free operation of the device at high pressures and / or flow rates of the transported liquid.

The technical result from the use of the invention is to increase the reliability of the device.

The proposed device emergency shutdown of the pipeline contains a housing, valve, valve seat and valve return mechanism. The housing is equipped with a supply and consumables for connecting to the supply and consumable sections of the pipeline. The valve seat is installed across the flow part of the housing, and the valve is connected by a rod to the return mechanism.

To achieve the result, the valve is located on the side of the supply pipe and is mounted on the stem. The stem is mounted movably in the guides of the housing. The return mechanism includes a seal, an adjustable support, a fuse and a support cup. The seal is fixed in the housing. The adjustable support is movably mounted in the support cup on a fuse of soluble solids. The fuse is installed at the bottom of the support cup, in which holes are made for spilled liquid. The support cup is installed on the floor of the controlled room.

The proposed device has several versions.

The second performance. The proposed emergency shutdown device of the pipeline, in which the seal of the return mechanism is made in the form of an annular seal fixed in the housing and covering the rod, and the adjustable support is made in the form of a sleeve mounted on the rod by means of a threaded connection.

Third performance. The proposed device emergency shutdown of the pipeline, in which the seal of the return mechanism is made in the form of an annular convex elastic diaphragm. The diaphragm is seated on the rod along the inner annular surface and hermetically mounted on the rod. Along the outer contour, the diaphragm is hermetically fixed to the housing by a flange. The adjustable support consists of a thrust bearing and a sleeve connected by a threaded connection. The thrust bearing is mounted on the rod and is equipped with a support ridge supporting the diaphragm between the rod and the body. The adjustable support with its sleeve is movably mounted in the support cup on the fuse.

Fourth performance. The proposed emergency pipeline shut-off device, in which the return mechanism is equipped with a seal in the form of a blank flat elastic diaphragm. The diaphragm along the outer contour is sealed to the housing by a flange. The adjustable support consists of a thrust bearing and a sleeve connected by a threaded connection. The adjustable support with its sleeve is movably mounted in the support cup on the fuse. The stem and thrust bearing are equipped with support discs that support the diaphragm inside and out.

Fifth performance. The proposed device emergency shutdown of the pipeline, in which the rod and valve are spring-loaded relative to the housing by a return spring.

In the event of a liquid spill, the latter enters through the holes in the bottom of the support cup to a fuse that dissolves and frees up space for the movement of the adjustable support, stem and valve. The valve under the action of pressure in the supply section of the pipeline and the forces of gravity moves to fit into the seat and closes the flow section of the pipeline. In versions 2, 3, 4 and 5, in the event of an emergency operation of the device, the elastic diaphragms bend outward. In version 5, the valve landing is additionally provided by a spring.

Figure 1 presents a General view of the device in working condition, which includes signs of the first and second versions.

Figure 2 presents a General view of the device in working condition, which includes signs of the first and third versions.

Figure 3 presents a General view of the device after an emergency response, which includes signs of the first and third versions.

Figure 4 presents a General view of the device in working condition, which includes signs of the first, fourth and fifth versions.

The emergency pipeline shut-off device in FIG. 1 comprises a housing 1, a valve 2, a valve seat 3, and a valve return mechanism. The body is equipped with a supply 4 and consumable 5 nozzles for connecting to the supply and consumable sections of the pipeline. The valve seat 3 is installed across the flow part of the housing, and the valve is connected by a stem 6 to the return mechanism.

To achieve the result, the valve is located on the side of the supply pipe 4 and is mounted on the stem 6. The stem is mounted movably in the guides of the housing. The return mechanism includes a seal 7, an adjustable support 8, a fuse 9, and a support cup 10. The seal is fixed in the housing 1. An adjustable support 8 is movably mounted in the support cup 10 on a fuse 9 of a solid soluble substance. The fuse is installed at the bottom of the support cup, in which holes are made for spilled liquid. The support cup is installed on the floor of the controlled room. The housing 1 is made in the form of a cylinder, closed by covers 11, 12, with o-rings 13, which are tightened by pins 14 and nuts 15.

The emergency pipeline shut-off device in the second version, see FIG. 1, contains a return mechanism seal made in the form of an annular gland 7 fixed in the housing and covering the rod 6. The adjustable support is made in the form of a sleeve 8 mounted on the rod by means of a threaded connection.

The emergency shut-off device of the pipeline in the third version, see FIGS. 2, 3, comprises a return mechanism seal made in the form of an annular convex elastic diaphragm 16. The diaphragm is seated on the rod 6 along the inner annular surface and hermetically fixed to the rod. Along the outer contour, the diaphragm 16 is hermetically fixed to the housing by a flange 17. The adjustable support consists of a thrust bearing 18 and a sleeve 8 connected by a threaded connection. The thrust bearing 18 is mounted on the rod and is equipped with a support ridge supporting the diaphragm between the rod and the body. Adjustable support with its sleeve 8 is movably mounted in the support cup on the fuse.

In Fig.2, the device is shown in working condition in Fig.3 - after an emergency operation.

The emergency shut-off device of the pipeline in the fourth version, see Fig. 4, contains a return mechanism seal made in the form of a deaf flat elastic diaphragm 19, which is sealed along the outer contour by a flange 17. The adjustable support consists of a thrust bearing 20 and a sleeve 8 connected threaded connection. Adjustable support with its sleeve 8 is movably mounted in the support cup on the fuse. The stem 6 and thrust bearing 20 are equipped with end support disks that support the diaphragm from the inside and outside.

The emergency pipeline shut-off device in the fifth embodiment, see FIG. 4, is equipped with a return spring 21, by means of which the stem and valve are spring-loaded relative to the housing.

The device is brought into operation as follows.

A fuse 9 of solid soluble material, for example sugar, is installed in the support cup 10. An adjustable support is mounted on the fuse 9 with its sleeve 8. The support cup is mounted under the device so that the adjustable support supports the stem directly or through an elastic membrane. The valve lift is adjustable with an adjustable foot. To control the height of the valve during adjustment, the cap 11 is equipped with a sealed plug.

The device operates as follows.

In the event of a liquid spill, the latter enters through the openings in the bottom of the support cup to the fuse 9, which dissolves and frees up space for the movement of the adjustable support, stem and valve. The valve under the action of pressure in the supply section of the pipeline and the forces of gravity moves to fit into the seat and closes the flow section of the pipeline. In versions 3, 4 and 5, in case of emergency operation of the device, the elastic diaphragms bend outward. In version 5, the valve landing is additionally provided by a spring 21.

The industrial applicability of the invention is confirmed by bench tests and the operation of the installation series.

The production of the proposed device is implemented in a metalworking plant.

The present invention improves the reliability of the device.

Claims (5)

1. The emergency shut-off device of the pipeline, comprising a housing, a valve, a valve seat and a valve return mechanism, in which the body is equipped with a supply and consumable nozzles, a valve seat is installed across the flow part of the body, and the valve is connected by a rod to the return mechanism, characterized in that the valve is located from the supply pipe side and mounted on the rod, the rod is mounted movably in the guides of the housing, the return mechanism includes a seal, an adjustable support, a fuse and a support cup, the seal is fixed to rpuse adjustable support is movably mounted in supporting the glass at fuse of solid solute, the fuse is mounted on the bottom of the support cup, wherein the openings under spillage. 2. The emergency pipeline shut-off device according to claim 1, characterized in that the return mechanism seal is made in the form of an annular seal fixed in the housing and covering the rod, and the adjustable support is made in the form of a sleeve mounted on the rod by means of a threaded connection. 3. The emergency pipeline shut-off device according to claim 1, characterized in that the return mechanism seal is made in the form of an annular convex elastic diaphragm, the diaphragm is seated on the rod along the inner annular surface and hermetically fixed to the rod, the diaphragm is hermetically fixed to the housing by a flange, the adjustable support consists of a thrust bearing and a sleeve connected by a threaded connection, the thrust bearing is fixed to the rod and equipped with a support ridge supporting the diaphragm between the rod and the body, adjustable I support his sleeve slidably mounted in the support glass to fuse. 4. The emergency pipeline shut-off device according to claim 1, characterized in that the return mechanism is equipped with a seal in the form of a blank flat elastic diaphragm, which is flange sealed on the outer contour, the adjustable support consists of a thrust bearing and a sleeve connected by a threaded connection, adjustable support its sleeve is movably mounted in the support cup on the fuse, the rod and thrust bearing are equipped with support discs that support the diaphragm from the inside and outside. 5. The emergency pipeline shut-off device according to claim 1, characterized in that the stem and valve are spring-loaded relative to the housing by a return spring.

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