CN216896826U

CN216896826U - Natural gas long distance pipeline safety pressure testing device

Info

Publication number: CN216896826U
Application number: CN202123399152.8U
Authority: CN
Inventors: 付少东; 唐爱纯
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-05
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a safety pressure test device for a natural gas long-distance pipeline, which comprises an installation and protection mechanism and a base plate seat, wherein the base plate seat is in contact with the ground; sealing mechanism, including set up in the chuck of the relative one side of fixed end cover and activity end cover, after fixed end cover and activity end cover to the natural gas line joint, then the annular gasbag can expand gradually under aerating device's effect, constitute closely to paste until its outer edge and second sealing washer, first sealing washer also can form closely to paste with natural gas line's inner wall simultaneously, can form seamless connection between accomplishing back natural gas line and the chuck, the structure cooperation is simple, the installation is quick, the required plenty of time cost of conventional screw thread installation has been saved.

Description

Natural gas long distance pipeline safety pressure testing device

Technical Field

The utility model relates to the technical field of pipeline detection devices, in particular to a safety pressure testing device for a long-distance natural gas pipeline.

Background

When natural gas is transported by a natural gas pipeline, the pipeline is easy to burst due to overlarge pressure, so that potential safety hazards and economic loss are brought, and the natural gas pipeline needs to be subjected to pressure test detection before being put into use; at present, natural gas line is when carrying out the safety pressure testing, earlier through the gas-supply pipe intercommunication between the gas outlet of pump that admits air and the natural gas line, the gas-supply pipe generally passes through flange joint with natural gas line's port, the gas-supply pipe intercommunication has the barometer, then pass through the pump that admits air and impress the air in the natural gas line inside, then place a period with the natural gas line that is full of gas, observe the registration change of manometer, if the registration does not change, then explain that natural gas line gas tightness is better, can drop into the use in later stage.

However, present pressure testing device has some weak points, and the fit connected mode through flange and bolt can increase the preparation time of pressure testing installation by a wide margin, has wasted a large amount of time cost and cost of labor, and simultaneously, combine inseparably easily between the ring flange for the inside gas leakage of natural gas line, and then influence going on smoothly of pressure testing operation, in addition, also need to improve in the aspect of the security, in view of above-mentioned problem, we have provided a natural gas long-distance pipeline safety pressure testing device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a safety pressure test device for a natural gas long-distance pipeline, which aims to solve the problems of complex installation and influence on pressure test efficiency in the background technology, and therefore, the utility model aims to provide the safety pressure test device for the natural gas long-distance pipeline, which can quickly limit and install the natural gas pipeline needing pressure test and plug two ends of the pipeline in time, thereby greatly improving the operation efficiency of the device and further strengthening the use safety.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a natural gas long distance pipeline safety pressure testing device which includes:

the installation and protection mechanism comprises a bottom plate seat which is in contact with the ground, wherein an explosion-proof box is arranged on one side of the upper end of the bottom plate seat, a fixed end cover and a movable end cover are respectively arranged at two ends in the explosion-proof box, and a natural gas pipeline with two ends respectively abutted to the fixed end cover and the movable end cover is arranged in the explosion-proof box;

the sealing mechanism comprises a chuck arranged on one side opposite to the fixed end cover and the movable end cover, an annular air bag is arranged on one circle of the outer wall of the root part of the chuck, and a flexible plastic ring which is abutted against the natural gas pipeline is arranged on one circle of the outer side of the annular air bag;

and the air inlet mechanism comprises an air transmission straight pipe which penetrates through the movable end cover and extends to one end of the outer side of the explosion-proof box, and one end of the air transmission straight pipe is connected with an air transmission hose.

Preferably, the middle part of the explosion-proof box is provided with an arc-shaped clamping seat for supporting the natural gas pipeline, one end of the outer side of the movable end cover is provided with a hydraulic rod connected with the movable end cover, the bottom of the movable end cover is provided with a sliding seat which is connected with the bottom plate seat in a horizontal sliding mode, the sliding seat is matched with the hydraulic rod to perform operation, and the top of the explosion-proof box is hinged with a box cover which can be opened hydraulically.

Preferably, the inboard edge of activity end cover and fixed end cover is provided with fixed limit ring, and constitutes the right angle structure between fixed limit ring and the lid inner wall, encircle in the inboard of fixed limit ring and right angle face is provided with L type rubber circle, L type rubber circle with support each other between the natural gas line and paste.

Preferably, the inboard round of flexible plastic circle be provided with the annular airbag supports the second sealing washer of pasting each other, the outside round of flexible plastic circle be provided with the natural gas line supports the first sealing washer of pasting each other, flexible plastic circle towards one side fixedly connected with spacing rand of fixed limit ring, and flexible plastic circle passes through the inboard of spacing rand cutting ferrule in fixed limit ring.

Preferably, the chuck with be fixed mounting between fixed end cover and the movable end cover, and the inside of chuck is hollow structure, the inside of chuck is provided with the air inlet hose, the one end of air inlet hose with the annular gasbag is linked together, the other end of air inlet hose with the gas transmission device of explosion-proof box outside is linked together.

Preferably, a fixed integral structure is arranged between the gas transmission straight pipe and the movable end cover, the opposite end of the gas transmission hose, which is positioned on the gas transmission straight pipe, is communicated with a gas pump, a gas valve is further arranged between the gas pump and the gas transmission hose, and a barometer is arranged at one end of the gas transmission straight pipe, which is close to the gas transmission hose.

Compared with the prior art, the utility model has the beneficial effects that:

(one) through installation and protection mechanism's setting, can effectively improve pressure testing device's safety in utilization through the setting of explosion-proof case and case lid, to prevent that the pipeline accident from bursting and bring the injury for the staff, then the hydraulic stem can promote the one end that movable end cover supported the pipeline after natural gas pipeline places on the arc cassette, and carry out the level and slide, both ends and fixed end cover and the mutual joint of movable end cover until natural gas pipeline, thereby accomplish aerating device's quick linking and installation, effectively improved pressure testing device's operating efficiency.

(II) through sealing mechanism's setting, after fixed end cover and movable end cover to the natural gas line joint, then annular gasbag can expand gradually under aerating device's effect, until its outer fringe and second sealing washer constitute closely to paste, first sealing washer also can form closely to paste with natural gas line's inner wall simultaneously, can form seamless connection between natural gas line and the chuck after accomplishing, and the structure cooperation is simple, and the installation is quick, has saved the required plenty of time cost of conventional screw thread installation.

Drawings

FIG. 1 is a schematic view of the overall external perspective structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the explosion-proof box of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a side view of the arc-shaped card seat of the present invention;

fig. 5 is a schematic view of an external three-dimensional structure of the flexible plastic ring of the present invention.

In the figure: 100. a mounting and protection mechanism; 110. a floor base; 120. an explosion-proof box; 1201. a box cover; 130. fixing an end cover; 140. a movable end cap; 150. an arc-shaped clamping seat; 160. fixing the side ring; 170. an L-shaped rubber ring; 180. a natural gas pipeline; 190. a hydraulic lever; 1901. a slide base; 200. a sealing mechanism; 210. a chuck; 220. an annular air bag; 230. a flexible plastic ring; 2301. a limiting retainer ring; 240. a first seal ring; 250. a second seal ring; 260. an air intake hose; 300. an air intake mechanism; 310. a gas transmission straight pipe; 320. a gas hose; 330. an air pump; 340. an air valve; 350. a barometer.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The utility model provides a safety pressure test device for a natural gas long-distance pipeline, which can be used for quickly limiting and installing a natural gas pipeline needing pressure test and plugging two ends of the pipeline in time, so that the operation efficiency of the device is greatly improved, and the use safety is further enhanced.

Fig. 1 to 5 are schematic structural views illustrating a pressure test device for long distance natural gas pipeline safety according to the present invention, and referring to fig. 1 to 5, a main body of the pressure test device for long distance natural gas pipeline safety according to the present embodiment includes an installation and protection mechanism 100, a sealing mechanism 200, and an air inlet mechanism 300.

The mounting and protecting mechanism 100 comprises a bottom plate seat 110 contacted with the ground, an anti-explosion box 120 is arranged on one side of the upper end of the bottom plate seat 110, a fixed end cover 130 and a movable end cover 140 are respectively arranged at two ends inside the anti-explosion box 120, a natural gas pipeline 180 with two ends respectively abutted against the fixed end cover 130 and the movable end cover 140 is arranged in the anti-explosion box 120, an arc-shaped clamping seat 150 for supporting the natural gas pipeline 180 is arranged at the middle part of the anti-explosion box 120, a hydraulic rod 190 connected with the movable end cover 140 is arranged at one end of the outer side of the movable end cover 140, a sliding seat 1901 which is horizontally and slidably connected with the bottom plate seat 110 is arranged at the bottom of the movable end cover 140, the sliding seat 1901 is matched with the hydraulic rod 190 for operation, a box cover 1201 capable of being opened by hydraulic pressure is hinged at the top of the anti-explosion box 120, the use safety of the pressure testing device can be effectively improved by the arrangement of the anti-explosion box 120 and the box cover 1201, so as to prevent the pipeline from being accidentally burst to hurt the workers, the arc-shaped clamping seat 150 can transversely support and stabilize the natural gas pipeline 180, after the natural gas pipeline 180 is placed on the arc-shaped clamping seat 150, the hydraulic rod 190 can push the movable end cover 140 to abut against one end of the pipeline and horizontally slide until the two ends of the natural gas pipeline 180 are mutually clamped with the fixed end cover 130 and the movable end cover 140, so that the quick connection and installation of the inflating device are completed, the operation efficiency of the pressure testing device is effectively improved, the fixed edge ring 160 is arranged at the inner side edges of the movable end cover 140 and the fixed end cover 130, a right-angle structure is formed between the fixed edge ring 160 and the inner wall of the cover body, the L-shaped rubber ring 170 is arranged around the fixed edge ring 160 and the inner side of the right-angle surface, the L-shaped rubber ring 170 and the natural gas pipeline 180 abut against each other, the flexible plastic ring 230 can be in limiting sleeve joint through the fixed edge ring 160 to prevent the slipping of the flexible plastic ring, and meanwhile, the edge part of the natural gas pipeline 180 can be abutted and sealed through the L-shaped rubber ring 170, and cooperate with the sealing mechanism 200 to form a reinforced seal.

The sealing mechanism 200 comprises a chuck 210 arranged at one side opposite to a fixed end cover 130 and a movable end cover 140, an annular air bag 220 is arranged on one circle of the outer wall of the root part of the chuck 210, a flexible plastic ring 230 abutting against a natural gas pipeline 180 is arranged on one circle of the outer side of the annular air bag 220, a second sealing ring 250 abutting against the annular air bag 220 is arranged on one circle of the inner side of the flexible plastic ring 230, a first sealing ring 240 abutting against the natural gas pipeline 180 is arranged on one circle of the outer side of the flexible plastic ring 230, a limiting clamping ring 2301 is fixedly connected to one side of the flexible plastic ring 230 facing a fixed edge ring 160, the flexible plastic ring 230 is clamped at the inner side of the fixed edge ring 160 through the limiting clamping ring 2301, after the fixed end cover 130 and the movable end cover 140 are clamped against the natural gas pipeline 180, the annular air bag 220 gradually expands under the action of an inflating device until the outer edge of the annular air bag forms tight abutting against the second sealing ring 250, meanwhile, the first sealing ring 240 can also be tightly abutted against the inner wall of the natural gas pipeline 180, seamless connection can be formed between the natural gas pipeline 180 and the chuck 210 after completion, the structure matching is simple, the installation is quick, a large amount of time cost required by conventional thread installation is saved, the chuck 210 is fixedly installed with the fixed end cover 130 and the movable end cover 140, the inside of the chuck 210 is of a hollow structure, the inside of the chuck 210 is provided with the air inlet hose 260, one end of the air inlet hose 260 is communicated with the annular air bag 220, the other end of the air inlet hose 260 is communicated with the air conveying device outside the explosion-proof box 120, the air conveying device outside the explosion-proof box 120 can quickly inflate the annular air bag 220 through the air inlet hose 260, and the quick installation matching is perfected.

The air inlet mechanism 300 comprises an air delivery straight pipe 310 penetrating through the movable end cover 140 and extending to one end of the outer side of the explosion-proof box 120, one end of the air delivery straight pipe 310 is connected with an air delivery hose 320, the air delivery straight pipe 310 and the movable end cover 140 are of a fixed integrated structure, one end, located on the opposite side of the air delivery straight pipe 310, of the air delivery hose 320 is communicated with an air pump 330, an air valve 340 is further arranged in the middle of the air pump 330 and the air delivery hose 320, an air pressure gauge 350 is arranged at one end, close to the air delivery hose 320, of the air delivery straight pipe 310, when the natural gas pipeline 180 needs to be inflated and pressure tested, the air valve 340 can be opened firstly, then the air pump 330 can inject high-pressure air into the natural gas pipeline 180 through the air delivery hose 320 and the air delivery straight pipe 310, the air pressure in the natural gas pipeline 180 can be displayed in real time through the air pressure gauge 350, and the specific operation can be adjusted according to needs.

In summary, in the pressure test device for the long natural gas pipeline according to the embodiment, after the natural gas pipeline 180 is placed on the arc-shaped clamping seat 150, the hydraulic rod 190 pushes the movable end cover 140 to abut against one end of the pipeline, and horizontally slides until the two ends of the natural gas pipeline 180 are clamped with the fixed end cover 130 and the movable end cover 140, so as to complete the rapid engagement of the inflator, the annular air bag 220 gradually expands under the action of the inflator until the outer edge of the annular air bag and the second sealing ring 250 form a tight abutting joint, and the first sealing ring 240 also forms a tight abutting joint with the inner wall of the natural gas pipeline 180, after the completion, the natural gas pipeline 180 and the chuck 210 form a seamless joint, and finally, when the natural gas pipeline 180 needs to be inflated and tested, the gas valve 340 can be opened first, and then the gas pump 330 can inject high-pressure gas into the natural gas pipeline 180 through the gas hose 320 and the gas straight pipe 310, the pressure in the natural gas pipe 180 is constantly displayed by the pressure gauge 350, and the specific operation can be adjusted as required.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a natural gas long distance pipeline safety pressure testing device which characterized in that includes:

the mounting and protecting mechanism (100) comprises a bottom plate seat (110) contacted with the ground, wherein an explosion-proof box (120) is arranged on one side of the upper end of the bottom plate seat (110), a fixed end cover (130) and a movable end cover (140) are respectively arranged at two ends in the explosion-proof box (120), and a natural gas pipeline (180) with two ends respectively abutted by the fixed end cover (130) and the movable end cover (140) is arranged in the explosion-proof box (120);

the sealing mechanism (200) comprises a chuck (210) arranged on one side opposite to the fixed end cover (130) and the movable end cover (140), an annular air bag (220) is arranged on one circle of the outer wall of the root part of the chuck (210), and a flexible plastic ring (230) abutted against the natural gas pipeline (180) is arranged on one circle of the outer side of the annular air bag (220);

the air inlet mechanism (300) comprises an air transmission straight pipe (310) which penetrates through the movable end cover (140) and extends to one end of the outer side of the explosion-proof box (120), and one end of the air transmission straight pipe (310) is connected with an air transmission hose (320).

2. The pressure test device for the safety of the long-distance natural gas pipeline according to claim 1, characterized in that: the middle part of explosion-proof box (120) is provided with arc cassette (150) that is used for the bracketing natural gas line (180), the outside one end of activity end cover (140) is provided with hydraulic stem (190) rather than being connected, the bottom of activity end cover (140) is provided with and constitutes horizontal sliding connection's slide (1901) with bottom plate seat (110), and slide (1901) cooperation hydraulic stem (190) carry out the operation, but the top of explosion-proof box (120) still articulates there is case lid (1201) that can hydraulic pressure open.

3. The pressure testing device for the safety of the long-distance natural gas pipeline according to claim 2, characterized in that: the inner side edges of the movable end cover (140) and the fixed end cover (130) are provided with fixed edge rings (160), a right-angle structure is formed between the fixed edge rings (160) and the inner wall of the cover body, L-shaped rubber rings (170) are arranged around the fixed edge rings (160) and the inner sides of the right-angle surfaces, and the L-shaped rubber rings (170) and the natural gas pipeline (180) are mutually abutted.

4. The safety pressure test device for the long-distance natural gas pipeline according to claim 3, characterized in that: the inboard round of flexible plastic ring (230) be provided with annular gasbag (220) second sealing washer (250) of pasting each other, the outside round of flexible plastic ring (230) be provided with natural gas line (180) first sealing washer (240) of pasting each other, flexible plastic ring (230) face one side fixedly connected with limit collar (2301) of fixed limit ring (160), and flexible plastic ring (230) are passed through limit collar (2301) cutting ferrule in the inboard of fixed limit ring (160).

5. The pressure test device for the safety of the long-distance natural gas pipeline according to claim 4, characterized in that: chuck (210) with be fixed mounting between fixed end cover (130) and movable end cover (140), and the inside of chuck (210) is hollow structure, the inside of chuck (210) is provided with air intake hose (260), air intake hose (260) one end with annular gasbag (220) are linked together, air intake hose (260) the other end with explosion-proof box (120) outside gas transmission device is linked together.

6. The pressure test device for the safety of the long-distance natural gas pipeline according to claim 5, characterized in that: the air delivery straight pipe (310) and the movable end cover (140) are of a fixed integrated structure, one end, located opposite to the air delivery straight pipe (310), of the air delivery hose (320) is communicated with an air pump (330), an air valve (340) is further arranged in the middle of the air pump (330) and the air delivery hose (320), and one end, close to the air delivery hose (320), of the air delivery straight pipe (310) is provided with an air pressure gauge (350).