CN212963867U

CN212963867U - Pipe joint air tightness detection device

Info

Publication number: CN212963867U
Application number: CN202021782684.2U
Authority: CN
Inventors: 姚月进
Original assignee: Tianjin Oulu Measurement And Control Technology Co ltd
Current assignee: Tianjin Oulu Measurement And Control Technology Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-04-13
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a coupling gas tightness detection device, including basin and valve, one side of basin is connected with the fixed plate, and installs the connecting plate in the top of fixed plate, the downside of connecting plate is connected with the cylinder, and the downside of cylinder is connected with the piston rod, the air pump is installed to one side of fixed plate, and the downside of air pump is connected with the connecting pipe, the left side of connecting pipe is connected with the air inlet, and the left side of air inlet is provided with the sleeve body, the center of sleeve body is provided with first through-hole, the inside of sleeve body is provided with the gas flow chamber, and one side in gas flow chamber is provided with the second through-hole, the outside of sleeve body is provided with fixed iron ring, and the right side of fixed iron. The pipe joint air tightness detection device is provided with the connecting pipe, the air pump is started to charge air pressure into the air flow cavity, and the connecting pipe is made of an elastic flexible hose, so that the air pressure can be normally charged into the sleeve body when the position of the sleeve body changes.

Description

Pipe joint air tightness detection device

Technical Field

The utility model relates to an air tightness detection device technical field specifically is a coupling gas tightness detection device.

Background

Along with the development demand of urban modern construction, the use of natural gas is more and more extensive, and the west gas is transported to the east, carries abundant natural gas from the west to the east area, just needs to lay long pipeline, in order to effectively avoid steel pipeline to take place the accident, prolongs its life, except do the inoxidizing coating protection on the pipeline, has also adopted the cathodic protection measure based on the electrochemistry principle, consequently adopts insulating joint to inject impressed current on the protection pipeline, is the assurance that realizes effective cathodic protection.

The existing detection device is characterized in that two ends of the existing detection device are fixed firstly when in detection, the internal pressurizing of the existing detection device is detected, the operation is complex, the detection time is long, the working efficiency is low, the use requirements of people can not be well met, and technical innovation is performed on the basis of the existing detection device according to the above situation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coupling gas tightness detection device to propose current detection device among the solution above-mentioned background art, earlier with the fixed back in both ends when detecting, detect its inside pressurization, not only operate complicacy but also check-out time is longer, make work efficiency low, can not be fine satisfy people's user demand problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a coupling gas tightness detection device, includes basin and valve, one side of basin is connected with the fixed plate, and installs the connecting plate in the top of fixed plate, the downside of connecting plate is connected with the cylinder, and the downside of cylinder is connected with the piston rod, the air pump is installed to one side of fixed plate, and the downside of air pump is connected with the connecting pipe, the left side of connecting pipe is connected with the air inlet, and the left side of air inlet is provided with the sleeve body, the center of sleeve body is provided with first through-hole, the inside of sleeve body is provided with the gas flow chamber, and one side in gas flow chamber is provided with the second through-hole, the outside of sleeve body is provided with fixed iron ring, and the right side of fixed iron ring is provided with the sealing washer, sleeve.

Preferably, the air pump forms a communicating structure with the air flowing chamber through the connecting pipe and the air inlet, and the connecting pipe is in threaded connection with the air inlet.

Preferably, the gas flow cavity is communicated with the second through hole, the second through hole is matched with the sealing ring, and the sealing ring and the fixed iron ring form a clamping structure.

Preferably, the depth of the first through hole is equal to the thickness of the sleeve body, and the gas flow cavity is communicated with the first through hole.

Preferably, the sleeve body forms a telescopic structure through the piston rod and the cylinder, and the sleeve body is in threaded connection with the piston rod.

Preferably, the gas outlet is fixedly connected with the valve, and the gas outlet is communicated with the gas flowing cavity.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the air pump is started to charge air pressure into the air flow cavity through the connecting pipe, and the connecting pipe is made of an elastic telescopic hose, so that the air pressure can be normally charged into the sleeve body when the position of the sleeve body changes; through the arrangement of the gas flowing cavity, after the pipe joint to be detected is placed, gas is filled, the sealing ring is jacked up, so that the sealing ring is attached to the inner wall of the pipe joint, sealing is performed, and the sealing ring can be fixed by the fixing iron ring, so that poor sealing caused by movement of the sealing ring is prevented;

after the gas flowing cavity is filled with air pressure, the gas flowing cavity enters the pipe joint through the first through hole, and the pipe joint is pressurized, so that the pipe joint does not need to be fixed during detection; the cylinder is arranged, the piston rod drives the sleeve body to move, the sleeve body drives the pipe joint to move towards the water tank, the pipe joint is detected, and when no bubble is formed in the water tank, the pipe joint is good in sealing performance and simple to operate, and the working efficiency is improved;

after the test is completed, the valve can be manually opened so that the gas in the pipe joint and the gas flow chamber is exhausted from the gas outlet, and then the tested assembly is taken down.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the internal structure of the present invention;

fig. 3 is a schematic side view of the sleeve body of the present invention.

In the figure: 1. a water tank; 2. a fixing plate; 3. a connecting plate; 4. a cylinder; 5. an air pump; 6. a connecting pipe; 7. a piston rod; 8. a sleeve body; 9. an air inlet; 10. a first through hole; 11. a gas flow chamber; 12. a second through hole; 13. a seal ring; 14. fixing an iron ring; 15. an air outlet; 16. and (4) a valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a pipe joint air tightness detection device comprises a water tank 1 and a valve 16, wherein one side of the water tank 1 is connected with a fixing plate 2, a connecting plate 3 is arranged above the fixed plate 2, the lower side of the connecting plate 3 is connected with an air cylinder 4, the lower side of the air cylinder 4 is connected with a piston rod 7, one side of the fixed plate 2 is provided with an air pump 5, and the lower side of the air pump 5 is connected with a connecting pipe 6, the left side of the connecting pipe 6 is connected with an air inlet 9, the left side of the air inlet 9 is provided with a sleeve body 8, the center of the sleeve body 8 is provided with a first through hole 10, the interior of the sleeve body 8 is provided with an air flowing cavity 11, and one side of the gas flow cavity 11 is provided with a second through hole 12, the outer side of the sleeve body 8 is provided with a fixed iron ring 14, and the right side of the fixed iron ring 14 is provided with a sealing ring 13, the left side of the sleeve body 8 is provided with an air outlet 15, and a valve 16 is arranged on the left side of the air outlet 15.

The utility model discloses in: the air pump 5 forms a communicating structure with the air flowing cavity 11 through the connecting pipe 6 and the air inlet 9, and the connecting pipe 6 is in threaded connection with the air inlet 9; through being equipped with connecting pipe 6, air pump 5 starts to fill atmospheric pressure to gas flow chamber 11 to connecting pipe 6 material is the elastic expansion hose, makes can be normal when the position of sleeve body 8 changes for it fills atmospheric pressure.

The utility model discloses in: the gas flow cavity 11 is communicated with the second through hole 12, the second through hole 12 is matched with the sealing ring 13, and the sealing ring 13 and the fixed iron ring 14 form a clamping structure; through being equipped with gas flow chamber 11, the coupling that will detect is placed the back well, and gas fills, with sealing washer 13 jack-up for the inner wall laminating of sealing washer 13 and coupling, thereby seal, and fixed iron ring 14 can be fixed sealing washer 13, prevent that it from removing and cause sealed bad.

The utility model discloses in: the depth of the first through hole 10 is equal to the thickness of the sleeve body 8, and the gas flow cavity 11 is communicated with the first through hole 10; after the gas flowing cavity 11 is filled with gas pressure, the gas enters the pipe joint through the first through hole 10, and the pipe joint is pressurized, so that the pipe joint does not need to be fixed during detection.

The utility model discloses in: the sleeve body 8 forms a telescopic structure with the cylinder 4 through the piston rod 7, and the sleeve body 8 is in threaded connection with the piston rod 7; through being equipped with cylinder 4, piston rod 7 drives 8 movements of sleeve body, and sleeve body 8 takes the coupling to move in to basin 1, detects the coupling, when not having the general bubble in basin 1, explains that the coupling leakproofness is good, easy operation promotes work efficiency.

The working principle of the pipe joint air tightness detection device is as follows: before use, the device is installed at a proper position, a component to be detected is inserted into the sleeve body 8, two groups of sealing rings 13 are positioned between pipe joints to be detected, the air pump 5 is started, high-pressure air is filled into the air flowing cavity 11 through the connecting pipe 6, the high-pressure air is filled into the inner cavity of the pipe joints through the first through hole 10, the air pressure in the pipe joints is kept at a high value, meanwhile, the high-pressure air is filled into the second through hole 12, the sealing rings 13 expand and press against the inner walls of the pipe joints along the radial direction, the sealing rings 13 can be firmly fixed through the fixing iron rings 14, the inner cavity of the pipe joints is sealed, the piston rod 7 drives the sleeve body 8 to be immersed into the water tank 1 through the air cylinder 4, whether the pipe joints are good or not can be detected.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a coupling gas tightness detection device, includes basin (1) and valve (16), its characterized in that: one side of the water tank (1) is connected with a fixed plate (2), a connecting plate (3) is installed above the fixed plate (2), a cylinder (4) is connected to the lower side of the connecting plate (3), a piston rod (7) is connected to the lower side of the cylinder (4), an air pump (5) is installed at one side of the fixed plate (2), a connecting pipe (6) is connected to the lower side of the air pump (5), an air inlet (9) is connected to the left side of the connecting pipe (6), a sleeve body (8) is arranged at the left side of the air inlet (9), a first through hole (10) is formed in the center of the sleeve body (8), an air flowing cavity (11) is formed in the sleeve body (8), a second through hole (12) is formed in one side of the air flowing cavity (11), a fixed iron ring (14) is arranged on the outer side of the sleeve body (8), and a sealing ring, the sleeve is characterized in that an air outlet (15) is formed in the left side of the sleeve body (8), and the valve (16) is installed on the left side of the air outlet (15).

2. The pipe joint airtightness detection apparatus according to claim 1, wherein: the air pump (5) is communicated with the air flowing cavity (11) through the connecting pipe (6) and the air inlet (9), and the connecting pipe (6) is in threaded connection with the air inlet (9).

3. The pipe joint airtightness detection apparatus according to claim 1, wherein: the gas flow cavity (11) is communicated with the second through hole (12), the second through hole (12) is matched with the sealing ring (13), and the sealing ring (13) and the fixed iron ring (14) form a clamping structure.

4. The pipe joint airtightness detection apparatus according to claim 1, wherein: the depth of the first through hole (10) is equal to the thickness of the sleeve body (8), and the gas flow cavity (11) is communicated with the first through hole (10).

5. The pipe joint airtightness detection apparatus according to claim 1, wherein: the sleeve body (8) forms a telescopic structure with the cylinder (4) through the piston rod (7), and the sleeve body (8) is in threaded connection with the piston rod (7).

6. The pipe joint airtightness detection apparatus according to claim 1, wherein: the gas outlet (15) is fixedly connected with the valve (16), and the gas outlet (15) is communicated with the gas flowing cavity (11).