CN212083105U

CN212083105U - Safety device for pressure resistance test of gas pipeline

Info

Publication number: CN212083105U
Application number: CN202020526801.2U
Authority: CN
Inventors: 李光显
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-12-04
Anticipated expiration: 2030-04-10

Abstract

Gas pipeline withstand voltage test safety device belongs to detection device technical field, especially relates to a gas pipeline withstand voltage test safety device. The utility model provides a gas pipeline withstand voltage test safety device which can detect gas leakage when harmful gas has caused certain influence on environment and personal health. The utility model discloses a gas transmission line seals the external member, is provided with gas leakage passageway in the sealed external member, and leak passage's port department is provided with atmospheric pressure atress action plugging member, is provided with the switch action part that moves plugging member linkage with atmospheric pressure atress corresponding to atmospheric pressure atress action plugging member, is provided with the housing on its characterized in that seals the external member, and leak passage's port setting is provided with the gas vent on the housing in the housing.

Description

Safety device for pressure resistance test of gas pipeline

Technical Field

The utility model belongs to the technical field of detection device, especially, relate to a gas pipeline withstand voltage test safety device.

Background

Most of the existing gas protection systems adopt leakage alarm blocking devices, when gas leaks to a certain concentration, the alarm blocking devices can be started, but certain influences are caused on the environment and the human health. Therefore, the existing leakage alarm blocking device is not safe enough and needs to be improved.

Disclosure of Invention

The utility model discloses be exactly to above-mentioned problem, provide one kind and need not wait to harmful gas when causing certain influence to environment and personal health, alright detect gas pipeline withstand voltage test safety device of gas leakage.

For realizing above-mentioned purpose, the utility model discloses a following technical scheme, the utility model discloses a gas transmission line seal assembly is provided with gas leakage passageway in the seal assembly, and leak passage's port department is provided with atmospheric pressure atress action plugging member, is provided with the switch action part with the linkage of atmospheric pressure atress action plugging member corresponding to atmospheric pressure atress action plugging member, is provided with the housing on its characterized in that seal assembly, and leak passage's port setting is provided with the gas vent on the housing in the housing.

As a preferred scheme, gas transmission line sealing sleeve spare is the tube-shape, tube-shape inner wall both ends thickening.

As another preferred scheme, the utility model discloses atmospheric pressure atress action shutoff part is acidproof rubber sleeve.

As another preferred scheme, the switch action component of the utility model comprises a magnet and a reed pipe, wherein the magnet is arranged on the air pressure stress action plugging component; the reed pipe is arranged at the upper end of the housing.

As another preferred scheme, the sealing sleeve of the utility model is provided with an air inlet one-way valve for pressurizing the leakage channel, a pressurized air discharge valve communicated with the leakage channel and an air pressure meter for measuring the air pressure in the leakage channel; the exhaust port is connected with an exhaust pipe, and a valve is arranged on the exhaust pipe.

As another preferred scheme, the utility model discloses the check valve that admits air adopts the valve inside.

As another preferred scheme, the cross-section of leak passage's port is for falling the T shape, and the cross-section that the shutoff part was moved in atmospheric pressure atress is opening T shape down, and the bottom surface that the shutoff part was moved in atmospheric pressure atress meets with the major part end bottom surface of leak passage's port, and the little head end outer wall of the shutoff part inside wall of atmospheric pressure atress action and leak passage's port meets, and the top that the inboard port with leak passage's port of atmospheric pressure atress action shutoff part top meets.

Secondly, the housing passes through the fastener setting on sealed external member.

In addition, the outer walls of the two sides of the gas transmission line sealing external member are provided with sealing ring placing pieces, each sealing ring placing piece comprises an inner side annular bottom plate, the outer end of each annular bottom plate extends outwards to form an end baffle, the sealing ring is arranged in a groove formed by the annular bottom plate and the end baffle, and the end of the gas transmission line sealing external member is positioned outside the outer end face of the end baffle;

the sealing ring is characterized by also comprising a fastening device, wherein the fastening device comprises an end plate with a pipeline through hole in the middle, one side of the end plate outwards forms an annular bulge around the through hole, and the outer end surface of the annular bulge is an action surface with the sealing ring; the end plate outside the annular bulge is provided with a through hole, and the end baffle is provided with a threaded hole corresponding to the through hole on the end plate; the end plate end face on the outer side of the annular bulge is a butt joint face with the end baffle end face, and the end plate end face on the inner side of the annular bulge is a butt joint face with the end face of the gas transmission line sealing sleeve.

The utility model has the advantages of.

The utility model discloses a sealed external member, leak passage's port department is provided with atmospheric pressure atress action shutoff part, and when gas transmission line leaked gas, gas can not leak, can only flow through gas leakage passage and make atmospheric pressure atress action shutoff part move, and then the action of trigger switch action part. Therefore, the utility model can detect the gas leakage without waiting for the harmful gas to have certain influence on the environment and the human health; and is safer.

The utility model is suitable for a civil gas pipeline. When in use, the gas pipe and/or the pipeline connecting device between the house-entering end and the gas stove can be arranged in the sealing sleeve. The switch action component can be connected with the alarm device or the gas transmission pipeline closing device, provides an action signal for the alarm device or the gas transmission pipeline closing device, and automatically closes the gas transmission pipeline before gas leakage affects the environment and the human health.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.

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

In the figure, 1 is a gas pipeline valve, 2 is an electromagnetic valve, 3 is a bolt, 4 is a fastening device, 5 is a sealing ring, 6 is a valve core, 7 is a port of a leakage channel, 8 is T-shaped, 9 is an acid-resistant rubber sleeve, 10 is a magnet, 11 is an exhaust port, 12 is an exhaust pipe upper valve, 13 is a reed pipe, 14 is a gas pressure gauge, 15 is a pressurized gas exhaust valve, 16 is a gas stove valve, and 17 is a gas stove.

Detailed Description

As shown in the figure, the utility model discloses a gas transmission line seals the external member, is provided with gas leakage passageway in the sealed external member, and the port of leakage passageway (leak the gas outlet of passageway promptly) is provided with atmospheric pressure atress action part, is provided with the switch action part with the linkage of atmospheric pressure atress action part corresponding to atmospheric pressure atress action part. The switch action component can be connected with a control port of the alarm device or the gas transmission pipeline closing device (electromagnetic valve), and the alarm device or the gas transmission pipeline closing device is triggered by the action of the switch action component.

The gas transmission line sealing sleeve is cylindrical, and two ends of the cylindrical inner wall are thickened. The middle part of the inner wall is provided with a leakage channel, the resistance of the channel is small, and the space of the leakage channel can be adjusted at two ends according to the thickening degree.

The air pressure stress action plugging component is an acid-resistant rubber sleeve. The acid-proof rubber sleeve can reliably seal the port of the leakage channel, and is resistant to acid gas erosion and gas impact, and the air pressure stress action is reliable.

The port of the leakage channel is arranged as a base for installing the acid-resistant rubber sleeve.

The cross section of the port of the leakage channel can be in an inverted T shape, the cross section of the air pressure stress action plugging component can be in a T shape with an opening facing downwards, the bottom surface of the air pressure stress action plugging component is connected with the bottom surface of the large end of the port of the leakage channel, the inner side wall of the air pressure stress action plugging component is connected with the outer wall of the small end of the port of the leakage channel, and the inner side of the top of the air pressure stress action plugging component is connected with the top of the port of the leakage channel.

The switch action component comprises a magnet and a reed switch, and the magnet is arranged on the air pressure force action component. A magnet and a reed switch are used as switch action parts; simple structure, quick and reliable switch.

The sealing sleeve is provided with a housing, the magnet is arranged in the housing, and the reed switch is arranged at the upper end of the housing; the upper end of the housing is provided with an exhaust port, the exhaust component adopts an exhaust pipe connected with the exhaust port, and the exhaust pipe is provided with a valve.

And the sealing sleeve is provided with an air inlet one-way valve for pressurizing the leakage channel, a pressurized air discharge valve communicated with the leakage channel and an air pressure meter for measuring the air pressure in the leakage channel.

The air inlet one-way valve adopts a valve core.

The housing is disposed on the seal assembly by fasteners.

The outer walls of two sides of the gas transmission line sealing external member are provided with sealing ring placing pieces, each sealing ring placing piece comprises an inner side annular bottom plate, the outer end of each annular bottom plate extends outwards to form an end baffle, a sealing ring (the sealing ring can fasten and seal a gas transmission line together with the gas transmission line sealing external member through a fastening device) is arranged in a groove formed by the annular bottom plates and the end baffles, and the end part of the gas transmission line sealing external member is positioned outside the outer end face of the end baffle;

the sealing ring is characterized by also comprising a fastening device, wherein the fastening device comprises an end plate with a pipeline through hole in the middle, one side of the end plate outwards forms an annular bulge around the through hole, and the outer end surface of the annular bulge is an action surface with the sealing ring; the end plate outside the annular bulge is provided with a through hole, and the end baffle is provided with a threaded hole corresponding to the through hole on the end plate; the end plate end face on the outer side of the annular bulge is a butt joint face with the end baffle end face, and the end plate end face on the inner side of the annular bulge is a butt joint face with the end face of the gas transmission line sealing sleeve. The fastening device can increase the expansion coefficient and the explosion-proof performance of the sealing ring.

The sealing ring can be a rubber ring.

The gas transmission pipeline and leakage channel pressure resistance test and sensitivity test are as follows:

and (3) a pressing test:

first, the gas line main valve is closed.

And II, closing a valve on the exhaust pipe.

2. The pressurized gas discharge valve is closed.

3. The valve of the gas stove at the tail end of the gas transmission pipeline is closed.

4. And inflating the valve inside by using an inflator, if the reading of the barometer stably rises to reach technical parameters, regarding the pressure resistance index as a qualified pressure resistance index of the leakage channel, and otherwise, regarding the pressure resistance index as air leakage.

5. And opening a valve of the gas stove, keeping the reading of the pointer of the barometer unchanged, and proving that the gas pipeline is airtight and the pressure resistance index is qualified. If the gas transmission pipeline is aged, deteriorated and cracked and cannot reach technical parameters and bear specified pressure, the gas pressure in the leakage channel can permeate inwards from the outside of the gas transmission pipeline and is discharged from the tail end of a gas stove through the gas transmission pipeline, so that the pointer of the pressure gauge is reduced to zero, and the gas transmission pipeline is proved to be air-leaked.

After the pressurizing is finished, the pressurizing gas discharge valve is opened, the gas in the leakage channel and the air in the acid-resistant rubber sleeve are discharged, and the magnet automatically falls down to recover the state to be started.

When the air compressor works normally, the valve on the exhaust pipe is kept in a normally open state, and the pressurized air discharge valve is kept in a normally closed state.

Daily sensitivity detection method for leak path: and (3) closing the gas delivery valve by a power-on test, closing the pressurizing gas discharge valve, pressurizing the valve core by an inflator, if an alarm gives an alarm, testing that the performance of the leakage channel is reliable, then opening the pressurizing gas discharge valve, discharging gas for the leakage channel, and enabling the magnet to fall and recover to a state to be started.

The pressing test can find the accident in time and eliminate the accident in the bud state.

The operation of the present invention will be described with reference to the accompanying drawings.

Pass by survey gas transmission pipeline on the gas transmission line the utility model discloses pipeline via hole on tubulose casing and the end plate passes the screw hole on the through-hole screw in end baffle on the end plate with the bolt, and annular protrusion withstands the sealing washer and makes the sealing washer swell and reach sealed effect. When the gas transmission pipeline to be tested leaks gas, the acid-resistant rubber sleeve deforms and swells through the leakage channel by the leaking gas, and the magnet moves to trigger the reed pipe.

It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims

1. The gas pipeline pressure resistance test safety device is characterized in that a housing is arranged on the sealing sleeve, a port of the leakage channel is arranged in the housing, and an exhaust port is formed in the housing.

2. The gas pipeline pressure withstanding test safety device of claim 1, wherein the gas transmission line sealing sleeve is cylindrical, and both ends of the inner wall of the cylindrical are thickened.

3. The safety device for testing the pressure resistance of a gas pipeline according to claim 1, wherein the air pressure force action plugging component is an acid-resistant rubber sleeve.

4. The gas pipeline pressure resistance test safety device of claim 1, wherein the switch action component comprises a magnet and a reed pipe, the magnet is arranged on the air pressure force action plugging component; the reed pipe is arranged at the upper end of the housing.

5. The gas pipeline pressure resistance test safety device of claim 1, wherein the sealing sleeve is provided with an air inlet check valve for pressurizing the inside of the leakage channel, a pressurized air discharge valve communicated with the leakage channel, and a barometer for measuring the air pressure in the leakage channel; the exhaust port is connected with an exhaust pipe, and a valve is arranged on the exhaust pipe.

6. The gas pipeline pressure withstanding test safety device of claim 5, wherein the air inlet check valve is a valve core.

7. The gas pipeline pressure withstanding test safety device of claim 1, wherein the cross-section of the port of the leakage channel is an inverted T-shape, the cross-section of the air pressure force acting blocking member is a T-shape with an opening facing downward, the bottom surface of the air pressure force acting blocking member is connected with the bottom surface of the large end of the port of the leakage channel, the inner side wall of the air pressure force acting blocking member is connected with the outer wall of the small end of the port of the leakage channel, and the inner side of the top of the air pressure force acting blocking member is connected with the top of the port of the leakage channel.

8. The gas pipeline pressure resistance test safety device of claim 1, wherein the casing is disposed on the sealing sleeve by fasteners.

9. The gas pipeline pressure withstanding test safety device of claim 1, wherein the gas transmission line sealing kit has sealing ring placing members disposed on the outer walls of the two sides thereof, the sealing ring placing members include an inner annular bottom plate, the outer end of the annular bottom plate extends outward to form an end baffle, the sealing ring is disposed in a groove formed by the annular bottom plate and the end baffle, and the end of the gas transmission line sealing kit is located outside the outer end surface of the end baffle;