CN213686253U

CN213686253U - Gas pipeline is with release replacement detection device

Info

Publication number: CN213686253U
Application number: CN202022728069.XU
Authority: CN
Inventors: 周喜桥; 王建林; 李沁波; 邓立新; 周华盛; 陶琪; 刘正国
Original assignee: Changsha Enn Gas Co ltd
Current assignee: Changsha Enn Gas Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-13
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a gas pipeline is with release replacement detection device, including the gas cell rather than the gas tube of connecting, be connected with manometer and ooff valve on the gas tube. The air bag is also connected with a functional tube, two ends of the air bag are provided with functional tube mounting holes, the functional tube passes through the two mounting holes, and the outer wall of the air bag is hermetically fixed with the side wall of the air bag; the port of one end of the functional tube only extends out of the side wall of the air bag to be communicated with the outside, the other end of the functional tube is provided with a longer pipeline positioned outside the air bag, the pipeline is connected with a pressure gauge and a switch valve, and the air bag is used in pairs or singly. The functional tube can be added to relieve the pressure of the medium at the plugging end of the gas pipeline, sample or inject nitrogen into the pipeline when needed, so that danger caused by pressure increase can be avoided, the conditions such as medium types in the pipeline can be known, the medium in the pipeline can be replaced by injecting nitrogen into the plugging part, accidents such as gas explosion caused by maintenance operation are avoided, and the safety during pipeline butt joint or rush repair operation is improved.

Description

Gas pipeline is with release replacement detection device

Technical Field

The utility model relates to a gas pipeline specifically is a gas pipeline is with release replacement detection device.

Background

The existing gas pipeline air blocking bag comprises a rubber air bag and an inflation tube connected with the rubber air bag, the air bag is placed into a pipeline when the gas pipeline air blocking bag is used, and the inflation tube inflates the air bag to expand the air bag so as to achieve the purpose of blocking media on two sides of the air bag. When the air pressure on one side is increased, the air blocking bag can rush out of the pipeline to cause safety accidents.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can know the gasbag both sides medium condition, avoid leading to the release replacement detection device of incident because of atmospheric pressure increases on one side.

The utility model provides a gas pipeline is with release replacement detection device, including the gas cell rather than the gas tube of connecting, be connected with manometer and ooff valve on the gas tube. The air bag is also connected with a functional tube, functional tube mounting holes are formed in two ends of the air bag, the functional tube penetrates through the two mounting holes, and the outer wall of the air bag is hermetically fixed with the side wall of the air bag; the port of one end of the functional tube only extends out of the side wall of the air bag to be communicated with the outside, the other end of the functional tube is provided with a longer pipeline positioned outside the air bag, the pipeline is connected with a pressure gauge and a switch valve, and the air bag is used in pairs or singly.

In one embodiment of the above technical solution, the functional pipe is a gas hose of DN10-DN25, and the gas filling pipe is a gas hose of DN 10.

The utility model discloses set up a function pipe that runs through the gasbag again near the original gas tube of gasbag, and connect manometer and ooff valve on the pipeline that the function pipe is located outside the gasbag to can carry out release, sample or annotate the nitrogen operation toward the pipeline to the shutoff end medium of gas pipeline when needs. Therefore, danger caused by pressure increase can be avoided, the conditions such as medium types in the pipeline can be conveniently known, nitrogen can be injected into the plugging part to replace the medium in the pipeline, and accidents such as gas explosion caused by maintenance operation are avoided. In short, the utility model discloses an add a function pipe with the external intercommunication of gasbag for the gasbag, can conveniently carry out operations such as release, sample monitoring or notes nitrogen replacement to the medium in the pipeline to improve the security when the pipeline butt joint is perhaps salvageed the operation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a first usage state of the present invention (rotated by 90 degrees).

Fig. 3 is a schematic view of a use state of the second embodiment of the present invention.

Detailed Description

As shown in figure 1, the utility model discloses a this kind of gas pipeline is with release replacement detection device, including gas bag 1 and the gas tube 2 and the function pipe 3 of connecting, connect manometer 4 and ooff valve 5 on gas tube 2 and the function pipe 3 respectively.

One end of the inflation tube 2 is communicated with the air bag 1, can inflate the air in the air bag and discharge the air in the air bag, and is connected with a pressure gauge and a switch valve. The diameter of the balloon can be tailored to the tube size, suggesting use in tubes below DN 500.

The function pipe 3 then runs through gasbag 1, and the both ends of gasbag 1 set up the function pipe mounting hole, and the one end of function pipe only stretch out the gasbag lateral wall can, the other end then has longer pipeline to be located outside the gasbag, and the mounting hole department sealing treatment on function pipe outer wall and the gasbag also connects manometer and ooff valve on the pipeline that is located outside the gasbag.

The gas filling pipe 2 is preferably a gas hose around DN 10. The function tube is preferably a fuel gas hose of DN10-DN 25.

The pressure gauge connected with the inflation tube 2 is convenient for monitoring the pressure value in the air bag within the safe bearing range of the air bag.

The pressure gauge connected to the functional pipe can monitor the medium pressure at the blocking end of the air bag, and the opening and closing valve on the functional pipe can also be opened to sample and detect the medium in the blocking end, or release the pressure at the blocking end or inject nitrogen into the blocking end to replace the medium.

In the first embodiment, as shown in fig. 2, the pipeline needs a pipe break joint, and the pipe break joint is located between a valve a and a valve B on the pipeline, and both valves are configured with a bleeding valve a and a bleeding valve B.

Because there is gas in the pipeline between valve A and the valve B, and the flow direction of gas is from valve A to valve B, so need confirm valve A whether normal work, whether have interior hourglass earlier.

When the normal work of the valve A is confirmed and no internal leakage exists, the valve A is closed to block air inlet, the valve B is opened to release pressure, and when the pressure is reduced to be incapable of being reduced, the pipe can be broken and the pipe can be in touch connection after nitrogen replacement is carried out on the valve A and the valve B.

When the valve A has internal leakage and can not be closed tightly, a small amount of gas can still continuously pass through the valve A after the valve A is closed, the bleeding valve A and the bleeding valve B are opened for bleeding, the gas in a pipeline between the valve A and the valve B is subjected to nitrogen injection replacement, the gas bag 1A and the gas bag 1B are placed in a front side hole at the contact part of a broken pipe after replacement, functional pipes of the two gas bags respectively face to the front and the back, after the two gas bags are inflated, the pressure in the pipe between the valve A and the gas bag 1A can be monitored through a pressure gauge on the functional pipe of the gas bag 1A, and the switch valve on the functional pipe can relieve the pressure in the pipe between the valve A and the gas bag 1A and detect media; the switch valve on the function tube of the air blocking bag 1B can detect the medium in the pipeline between the air blocking bag 1B and the valve B, or the blow-off valve B is matched to perform nitrogen replacement of the medium in the pipeline between the valve B and the air blocking bag 1B.

In the pipeline of other embodiments, when there is no bleeding valve or other device for facilitating bleeding and nitrogen gas replacement between the valve a and the valve B, two holes may be opened on the pipeline, then two air bags are respectively placed at the two holes in the manner shown in fig. 2, the air bag 1A and the air bag 1B are placed in the hole in the gas coming direction, the air bag 2A and the air bag 2B are placed in the downstream hole, the pressure gauge on the functional tube of the air bag 1A is used for pressure detection, the switch valve is used for pressure relief in the tube, and the switch valve on the functional tube of the air bag 1B and the air bag 2A is used for nitrogen gas replacement between the two air bags.

In the second embodiment, as shown in fig. 3, a valve a is used as an end valve of an original pipeline, and a new pipeline needs to be added.

Because no gas exists in the newly-added pipeline, the air bag only needs to monitor the medium situation in the pipeline between the valve A and the air bag, so the air bag can be independently applied, and the specific application refers to the first embodiment.

To sum up, compared with the prior art, the utility model, set up a pipeline again on the gas-filled pipeline next door to make it run through the gasbag, also connect manometer and ooff valve on the newly-increased pipeline, can carry out pressure release, sample or notes nitrogen operation to being held by the shutoff when needs. Can avoid the danger that shutoff side pipeline internal pressure increases and cause like this, can conveniently know the circumstances such as intraductal medium kind, can annotate nitrogen in order to replace the pipeline medium to the shutoff part, then carry out the butt joint operation of newly-increased gas pipeline.

Claims

1. The utility model provides a gas pipeline is with release replacement detection device, includes the gas cell rather than the gas tube of connecting, is connected with manometer and ooff valve on the gas tube, its characterized in that: the air bag is also connected with a functional tube, functional tube mounting holes are formed in two ends of the air bag, the functional tube penetrates through the two mounting holes, and the outer wall of the air bag is hermetically fixed with the side wall of the air bag; the port of one end of the functional tube only extends out of the side wall of the air bag to be communicated with the outside, the other end of the functional tube is provided with a longer pipeline positioned outside the air bag, the pipeline is connected with a pressure gauge and a switch valve, and the air bag is used in pairs or singly.

2. A pressure relief replacement detection device for a gas line as defined in claim 1, wherein: the functional pipe adopts a gas hose of DN10-DN25, and the gas filling pipe adopts a gas hose of DN 10.