Gas riser air tightness testing device

Abstract

The present invention relates to the technical field of gas riser air tightness testing, and discloses a gas riser air tightness testing device, comprising a test seat, an electric push rod fixed on the test seat, a mounting bracket slidably connected to the output end of the electric push rod, a first spring fixed between the mounting bracket and the output shaft of the electric push rod, a plurality of ventilation rods fixed on the mounting bracket, a first sealing plug fixed to one end of the ventilation rod, and a strip ventilation seat connected to the other end of the ventilation rod, the ventilation rod and the first sealing plug being communicated with, a gas pressure sensor fixed on the ventilation rod, a plurality of mounting sockets fixed to the other end of the test seat, a second sealing plug fixed in the mounting socket; the device can automatically seal and perform airtightness testing on a plurality of gas riser bodies at the same time, thereby greatly improving the efficiency and convenience of product airtightness testing, saving time and effort, and being convenient and quick.

Description

Technical Field

[0001] The present invention relates to the technical field of gas riser air tightness testing, in particular to a gas riser air tightness testing device. Background Art

[0002] The main function of the gas riser is to transport and distribute gas, ensure the safe operation of urban public infrastructure, and safeguard the daily life of residents and urban production operations. Gas risers usually include underground risers and overhead pipes, which are directly installed on the wall to facilitate the flow and distribution of gas in the pipeline. 2. The specific role of the gas riser is to transport gas: the gas riser transports gas from the supply source to each user through the pipeline system to ensure the normal supply of gas. Distribute gas: in residential and commercial areas, gas risers distribute gas to various users and facilities to meet daily use needs. At present, some gas risers will weld the gas branch pipes entering the household during the processing process. Welding can improve the firmness between the gas riser and the gas branch pipe. After welding is completed, the gas riser needs to be tested for air tightness to avoid gas leakage during the gas riser transportation process, thereby affecting the safety of use.

[0003] At present, during the air tightness test of gas risers, both ends of the gas riser and one end of the gas branch pipe need to be sealed at the same time. During the sealing process, multiple plugging heads are mainly fixed on the ends of the risers manually. After the test, the multiple plugging heads need to be removed in turn, which is time-consuming and labor-intensive. In addition, it is impossible to test multiple fuel risers at the same time. As a result, a lot of time is spent on disassembling and installing the plugging heads during the air tightness test of the gas riser, which greatly affects the efficiency of the gas tightness test of the gas riser. Summary of the Invention

[0004] The present invention provides a gas riser air tightness testing device, which is capable of automatically sealing and airtight testing a plurality of gas riser bodies at the same time, thereby greatly improving the efficiency and convenience of product air tightness testing, saving time and effort, and achieving the beneficial effects of convenience and speed. It solves the problem mentioned in the above-mentioned background technology that multiple sealing heads are fixed to the ends of the risers in sequence for sealing in a manual manner, and the multiple sealing heads need to be removed in sequence after the test, which is time-consuming and labor-intensive, and it is impossible to test a plurality of fuel risers at the same time. As a result, a relatively long time is spent on disassembling and assembling the sealing heads during the air tightness testing of the gas risers, which greatly affects the efficiency of the gas riser air tightness testing.

[0005] The present invention provides the following technical solution: A gas riser airtightness testing device, including a testing base, on which an electric push rod is fixed. A mounting bracket is slidably connected to the output end of the electric push rod. A first spring is fixed between the mounting bracket and the output shaft of the electric push rod. A plurality of ventilation rods are fixed on the mounting bracket. One end of each ventilation rod is fixed with a first sealing plug, and the other end of each ventilation rod is connected to a strip-shaped ventilation seat. The ventilation rod is communicated with the first sealing plug. A gas pressure sensor is fixed on the ventilation rod. A plurality of mounting sockets are fixed at the other end of the testing base, and a second sealing plug is fixed in each mounting socket;

[0006] A gas riser body is provided on the testing base. A branch pipe is welded on the gas riser body. Two ends of the gas riser body are respectively inserted into the first sealing plug and the second sealing plug. A plurality of positioning seats are provided on the testing base. A third sealing plug is slidably connected to the positioning seat. A second spring is connected between the third sealing plug and the positioning seat. An L-shaped abutting block is fixed at the lower end of the third sealing plug.

[0007] As an optional solution of the gas riser airtightness testing device of the present invention, wherein: A strip-shaped plate is fixed at the end of the electric push rod. A plurality of rectangular rods are fixed on the strip-shaped plate. A strip-shaped abutting block is fixed on the rectangular rod. Fourth guide rods are respectively fixed on both sides of the mounting bracket. The fourth guide rods are slidably connected to the testing base.

[0008] As an optional solution of the gas riser airtightness testing device of the present invention, wherein: Two first chutes are opened on the positioning seat. A first slide rod is fixed in the first chute. A positioning bracket is slidably connected to the first slide rod. The positioning bracket is elastically connected to the positioning seat through a third spring. A first abutting wedge block is fixed at the lower end of the positioning bracket.

[0009] As an optional solution of the gas riser airtightness testing device of the present invention, wherein: A first guide rod is slidably connected to the positioning seat. A U-shaped abutting block is fixed at one end of the first guide rod. The U-shaped abutting block abuts against the first abutting wedge block. The first guide rod is elastically connected to the positioning seat through a fourth spring.

[0010] As an alternative solution of the gas riser airtightness testing device of the present invention, wherein: a first guiding block is fixed at one end of the positioning seat, a resisting rod is slidably connected to the first guiding block, a fifth spring is connected between the resisting rod and the first guiding block, an L-shaped resisting frame is slidably connected to the positioning seat, a sixth spring is connected between the L-shaped resisting frame and the positioning seat, one end of the L-shaped resisting frame abuts against the U-shaped resisting block, and the other end of the L-shaped resisting frame abuts against the resisting rod.

[0011] As an alternative solution of the gas riser airtightness testing device of the present invention, wherein: a piston cylinder is fixed on the testing seat, a piston piece is slidably connected in the piston cylinder, a second guiding block is fixed on the piston cylinder, a piston rod is fixed on the piston piece, the piston rod is elastically connected to the second guiding block through a seventh spring, and an air outlet is connected to the piston cylinder.

[0012] As an alternative solution of the gas riser airtightness testing device of the present invention, wherein: a first inflatable sealing ring is installed on the first sealing plug, a first inflatable port communicated with the first inflatable sealing ring is arranged on the installation bracket, a second inflatable sealing ring is installed on the second sealing plug, a second inflatable port communicated with the second inflatable sealing ring is arranged on the installation socket, a third inflatable sealing ring is installed on the third sealing plug, a third inflatable port communicated with the third inflatable sealing ring is arranged on the L-shaped resisting block, and the air outlet is respectively connected to the first inflatable port, the second inflatable port and the third inflatable port through pipelines.

[0013] As an alternative solution of the gas riser airtightness testing device of the present invention, wherein: a second sliding groove is formed on the testing seat, a third guiding rod is fixed in the second sliding groove, a third guiding block is fixed on the positioning seat, the third guiding block is elastically connected to the third guiding rod through an eighth spring, a resisting bracket is fixed on the strip-shaped plate, and the resisting bracket abuts against the positioning seat.

[0014] As an alternative solution of the gas riser airtightness testing device of the present invention, wherein: a second sliding rod is slidably connected to the installation socket, one end of the second sliding rod abuts against the end of the gas riser body, a sliding bracket is fixed at the other end of the second sliding rod, the sliding bracket is elastically connected to the testing seat through a ninth spring, and a strip-shaped resisting block is fixed at one end of the sliding bracket. [[ID=十三]]

[0015] As an alternative solution of the gas riser airtightness testing device of the present invention, wherein: a third sliding rod is slidably connected to one end of the rectangular rod, a second resisting wedge block is fixed at the upper end of the third sliding rod, and a tenth spring is connected between the third sliding rod and the rectangular rod.

[0016] The present invention has the following beneficial effects:

[0017] 1. In this gas riser airtightness testing device, by installing the socket and the second sealing plug provided in the socket, it is convenient to seal when one end of several tested gas riser bodies is inserted. The electric push rod fixed on the test seat can push the mounting bracket to move horizontally, which is convenient for adjusting the working positions of several first sealing plugs, and promoting the first sealing plugs to be inserted into the other ends of several gas riser bodies for plugging, greatly improving the plugging efficiency. When the end of the electric push rod continues to move, it can带动 the rectangular rod fixed on the strip plate to move in the positioning seat. The strip-shaped contact block fixed on the rectangular rod can achieve the purpose of contacting the contact rod during the movement. Through the linkage of the contact rod, L-shaped contact frame and U-shaped contact block, it can achieve the purpose of contacting the first contact wedge block at the lower end of the positioning bracket, promoting the two positioning brackets to slide on the positioning seat and approach each other, and fitting on the inclined branch pipe, so as to correct the position of the branch pipe, achieve the purpose of positioning the branch pipe, and promote the opening of the branch pipe to be aligned with the third sealing plug, improving the accuracy of the plugging position. When the end of the electric push rod continues to move, it can achieve the purpose of the strip-shaped contact block contacting the L-shaped contact block, promoting the third sealing plug to move up and insert into the branch pipe for plugging. The strip-shaped air vent seat can be connected to the pressure testing equipment for airtight detection, and it can achieve the purpose of输送 gas into the gas riser body through the air vent rod and the first sealing plug for airtight testing. When the gas riser body is inflated and pressurized, the gas pressure sensor can detect the change of the internal air pressure of the gas riser body, so as to judge whether there is a gas leakage phenomenon in the gas riser body. The device can automatically plug and airtight detect several gas riser bodies at the same time, greatly improving the efficiency and convenience of the airtight testing of the product, saving time and effort, and being convenient and fast.

[0018] 2. In this gas riser airtightness testing device, after the third sealing plug completes the plugging of the branch pipe, when the end of the electric push rod continues to move, it can带动 the rectangular rod to move synchronously. During the movement of the rectangular rod, it can achieve the purpose of contacting the piston rod, promoting the piston rod to带动 the piston piece to slide in the piston cylinder. During the sliding process, it can achieve the purpose of compressing the gas inside the piston cylinder, and promoting the compressed gas to be discharged through the air outlet. The compressed gas can be输送 to the first inflation port, second inflation port and third inflation port through the pipeline respectively, so as to实现 the first inflation sealing ring on the first sealing plug, the second inflation sealing ring on the second sealing plug and the third inflation sealing ring on the third sealing plug, and achieve the inflation and expansion of the sealing ring to improve the plugging effect on the gas riser body and the opening of the branch pipe, and avoid the phenomenon of gas leakage during the test, affecting the accuracy of the sealing test.

[0019] 3. In the gas riser air tightness test device, the second sliding rod fixed on the sliding bracket can be easily slid in the installation socket and contact with the end of the gas riser body. In the process of the rectangular rod and the piston rod contacting each other, the second interference wedge fixed on the third sliding rod can be made to interfere with the strip interference block fixed at one end of the sliding bracket, so that the third sliding rod moves downward when it is interfered, and the second interference wedge can be moved to one side of the strip interference block. After the test is completed, when the rectangular rod is reset, the second interference wedge can pull the strip interference block to move horizontally, so that the sliding bracket drives the second sliding rod to move synchronously, which is convenient for gas testing. The riser body can be quickly detached from the installation socket, which can improve the efficiency of the gas riser body unloading. The third guide rod arranged on the test seat can be elastically connected to the third guide block fixed on the positioning seat. The interference bracket fixed on the strip plate can achieve the purpose of interference between the interference bracket and the positioning seat during the branch pipe positioning process, so that the positioning seat can move horizontally as a whole, which is convenient for the positioning bracket to be located on both sides of the branch pipe to improve the positioning effect. At the same time, during the unloading process of the gas riser body, the interference bracket and the positioning seat are released from the interference, which prompts the positioning seat to reset, which can avoid the movement of the branch pipe being hindered during the unloading process of the gas riser body, thereby improving the efficiency of the gas riser body unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a structural cross-sectional view of the present invention.

[0022] Figure 3 This is one of the schematic diagrams of the positioning seat structure of the present invention.

[0023] Figure 4 This is the second schematic diagram of the positioning seat structure of the present invention.

[0024] Figure 5 This is the third structural schematic diagram of the positioning seat of the present invention.

[0025] Figure 6 for Figure 2 A partial enlarged schematic diagram of point A in the middle.

[0026] Figure 7 for Figure 3 A partial enlarged schematic diagram of point B in the middle.

[0027] In the figure: 1. Test base; 101. Gas riser body; 102. Branch pipe; 2. Electric push rod; 3. Installation bracket; 310. Fourth guide rod; 4. First spring; 5. Vent rod; 6. First sealing plug; 7. Strip-shaped vent seat; 8. Gas pressure sensor; 9. Installation socket; 10. Second sealing plug; 11. Positioning seat; 12. Third sealing plug; 13. Second spring; 14. L-shaped abutting block; 15. Strip-shaped plate; 16. Rectangular rod; 17. First strip-shaped abutting block; 18. First chute; 19. First slide bar; 20. Positioning bracket; 21. Third spring; 22. First abutting wedge; 23. First guide rod; 24. C-shaped abutting block; 241. Fourth spring; 25. First guide block; 26. Abutting rod; 27. Fifth spring; 28. L-shaped abutting frame; 29. Sixth spring; 30. Piston cylinder; 301. Air outlet; 31. Piston piece; 32. Second guide block; 33. Piston rod; 34. Seventh spring; 35. First inflatable sealing ring; 36. First inflation port; 37. Second inflatable sealing ring; 38. Second inflation port; 39. Third inflatable sealing ring; 40. Third inflation port; 41. Second chute; 42. Third guide block; 43. Third guide rod; 44. Eighth spring; 45. Abutting bracket; 46. Tenth spring; 47. Second slide bar; 48. Sliding bracket; 49. Ninth spring; 50. Second strip-shaped abutting block; 51. Third slide bar; 52. Second abutting wedge; 53. Tenth spring. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Example 1, please refer to Figures 1 to 7 , a gas riser airtightness test device, including a test base, an electric push rod is fixed on the test base, an installation bracket is slidably connected to the output end of the electric push rod, a first spring is fixed between the installation bracket and the output shaft of the electric push rod, a plurality of vent rods are fixed on the installation bracket, a first sealing plug is fixed at one end of the vent rod, and the other end of the vent rod is connected to a strip-shaped vent seat. The vent rod is communicated with the first sealing plug, a gas pressure sensor is fixed on the vent rod, a plurality of installation sockets are fixed at the other end of the test base, and a second sealing plug is fixed in the installation socket;

[0030] The test base is provided with a gas riser body. A branch pipe is welded on the gas riser body. Both ends of the gas riser body are respectively inserted into the first sealing plug and the second sealing plug. The test base is provided with several positioning seats. A third sealing plug is slidably connected to the positioning seat. A second spring is connected between the third sealing plug and the positioning seat. An L-shaped abutting block is fixed to the lower end of the third sealing plug.

[0031] A strip-shaped plate is fixed to the end of the electric push rod. Several rectangular rods are fixed to the strip-shaped plate. A strip-shaped abutting block one is fixed to the rectangular rods. Fourth guide rods are respectively fixed to both sides of the mounting bracket. The fourth guide rods are slidably connected to the test base.

[0032] Two first chutes are formed in the positioning seat. A first slide bar is fixed in the first chute. A positioning bracket is slidably connected to the first slide bar. The positioning bracket is elastically connected to the positioning seat through a third spring. A first abutting wedge block is fixed to the lower end of the positioning bracket.

[0033] A first guide rod is slidably connected to the positioning seat. A U-shaped abutting block is fixed to one end of the first guide rod. The U-shaped abutting block abuts against the first abutting wedge block. The first guide rod is elastically connected to the positioning seat through a fourth spring.

[0034] A first guide block is fixed to one end of the positioning seat. A resisting rod is slidably connected to the first guide block. A fifth spring is connected between the resisting rod and the first guide block. An L-shaped resisting frame is slidably connected to the positioning seat. A sixth spring is connected between the L-shaped resisting frame and the positioning seat. One end of the L-shaped resisting frame abuts against the U-shaped abutting block, and the other end of the L-shaped resisting frame abuts against the resisting rod.

[0035] When the device is working, one end of several gas riser bodies is inserted into the installation socket and inserted onto the second sealing plug, so that the electric push rod fixed on the test seat can push the installation bracket to move horizontally, prompting several first sealing plugs to be inserted into the other end of the gas riser body, and the purpose of automatically sealing both ends of several tested gas riser bodies can be achieved simultaneously. At the same time, two positioning brackets arranged on the positioning seat are located on both sides of the branch pipe. When the output shaft of the electric push rod continues to move, the first spring is蓄力. The installation bracket is limited by the gas riser body and remains stationary. At the same time, it带动 the rectangular rod fixed on the strip plate to move in the positioning seat. During the movement of the strip-shaped contact block one fixed on the rectangular rod, the purpose of contacting the contact rod slidingly connected in the first guide block can be achieved, and the fifth spring is蓄力. It prompts the contact rod to move upward and contact one end of the L-shaped contact frame. During the horizontal movement of the L-shaped contact frame, the purpose of contacting the C-shaped contact block can be achieved, and the sixth spring is蓄力. The C-shaped contact block moves horizontally under the contact force, and at the same time, the first guide rod slides horizontally on the positioning seat, and the fourth spring is蓄力. During the movement of the C-shaped contact block, the purpose of contacting the first contact wedge block can be achieved, prompting the positioning bracket to move horizontally on the first slide rod in the first chute and gradually fit on the surface of the branch pipe. The third spring is蓄力,摆正 the position of the branch pipe, and achieve the purpose of positioning the branch pipe, prompting the opening of the branch pipe to be aligned with the third sealing plug, improving the position accuracy of the plugging. When the end of the electric push rod continues to move, the purpose of the strip-shaped contact block one contacting the L-shaped contact block can be achieved, and the second spring is蓄力. The L-shaped contact block带动 the third sealing plug to move upward on the positioning seat and thus be inserted into the branch pipe for plugging. The strip-shaped air vent seat can be connected to the pressure testing device, and the purpose of delivering gas into the gas riser body through the air vent rod and the first sealing plug for airtight testing can be achieved. When the gas riser body is pressurized after the internal inflation is completed, the change in the internal air pressure of the gas riser body can be detected through the gas pressure sensor, so as to determine whether there is a gas leakage phenomenon in the gas riser body.

[0036] Embodiment 2. This embodiment is an improvement made on the basis of Embodiment 1. Specifically, please refer to Figures 1 to 7 , a piston cylinder is fixed on the test seat. A piston piece is slidingly connected in the piston cylinder. A second guide block is fixed on the piston cylinder. A piston rod is fixed on the piston piece. The piston rod is elastically connected to the second guide block through a seventh spring. An air outlet is connected to the piston cylinder.

[0037] A first inflatable sealing ring is installed on the first sealing plug, a first inflatable port connected to the first inflatable sealing ring is provided on the mounting bracket, a second inflatable sealing ring is installed on the second sealing plug, a second inflatable port connected to the second inflatable sealing ring is provided on the mounting socket, a third inflatable sealing ring is installed on the third sealing plug, a third inflatable port connected to the third inflatable sealing ring is provided on the L-shaped resistance block, and the air outlet is respectively connected to the first inflatable port, the second inflatable port and the third inflatable port through pipes.

[0038] In order to improve the sealing effect of the first and second sealing plugs on the two ends of the gas riser body and the sealing effect of the third sealing plug on the branch pipe, and to improve the accuracy of the airtightness test, refer to Figure 2-Figure 6 After the third sealing plug seals the branch pipe, the end of the electric push rod continues to drive the rectangular rod to move horizontally, which can achieve the purpose of the rectangular rod and the piston rod contacting each other, prompting the piston rod to slide horizontally on the second guide block, thereby driving the piston plate to move in the piston cylinder, which can squeeze the air inside the piston cylinder, prompting the air to be discharged through the air outlet on the piston cylinder, and connected with the first inflation port, the second inflation port and the third inflation port through the pipeline, which can achieve the purpose of inflating the first inflation sealing ring, the second inflation sealing ring and the third inflation sealing ring, thereby improving the sealing effect of the first sealing plug and the second sealing plug on the two ends of the gas riser body and the third sealing plug on the branch pipe.

[0039] Example 3: This example is an improvement based on Example 1. For details, please refer to Figures 1 to 7 A second slide groove is provided on the test seat, a third guide rod is fixed in the second slide groove, a third guide block is fixed on the positioning seat, the third guide block is elastically connected to the third guide rod through an eighth spring, and a conflict bracket is fixed on the strip plate, which conflicts with the positioning seat.

[0040] A second sliding rod is slidably connected to the mounting socket, one end of the second sliding rod is against the end of the gas riser body, and a sliding bracket is fixed to the other end of the second sliding rod. The sliding bracket is elastically connected to the test seat through a ninth spring, and a strip-shaped interference block 2 is fixed to one end of the sliding bracket.

[0041] One end of the rectangular rod is slidably connected to a third sliding rod, an upper end of the third sliding rod is fixed with a second abutting wedge, and a tenth spring is connected between the third sliding rod and the rectangular rod.

[0042] After the airtightness test is completed, the gas riser body needs to be dropped onto the test seat to complete automatic unloading. Figure 3-Figure 7Before the moving rectangular rod collides with the piston rod, the purpose of causing the strip-shaped interference block 2 fixed at one end of the sliding bracket to interfere with the second interference wedge block can be achieved, so that the second interference wedge block is affected by the interference force, driving the third sliding rod to move downward on the rectangular rod, and the tenth spring accumulates force, and when the second interference wedge block moves to one side of the strip-shaped interference block 2, the interference can be released;

[0043] When the gas riser body is unloaded, the electric push rod can drive the mounting bracket to move horizontally, causing the plurality of first sealing plugs to detach from the other end of the gas riser body. At the same time, the rectangular rod drives the second interference wedge to interfere with the second strip interference block, so that the second strip interference block can drive the sliding bracket to slide on the test seat. The second sliding rod fixed on the sliding bracket slides in the mounting socket. The ninth spring accumulates force, so that the second sliding rod can push one end of the gas riser body to fall off from the mounting socket. When the other end of the gas riser body detaches from the first sealing plug, the gas riser body can be dropped onto the test seat for rapid unloading. When the ninth spring stops stretching, the second interference wedge is subjected to a greater interference force from the second strip interference block, and the second interference wedge moves downward to release the interference with the second strip interference block.

[0044] In order to prevent the gas riser body from falling and hitting the positioning seat during the unloading process, causing damage to the positioning seat, it is necessary to adjust the working position of the positioning seat. During the loading process, the interference bracket fixed on the strip plate can move synchronously with the strip plate. During the branch pipe sealing process, the interference bracket can be used to interfere with the positioning seat, prompting the third guide block fixed under the positioning seat to slide on the third guide rod fixed in the second slide groove. The eighth spring accumulates force, which can achieve the purpose of the positioning seat moving the positioning bracket horizontally to both sides of the branch pipe, making it convenient for the positioning bracket to correct the branch pipe position for positioning. During the unloading process, the strip plate drives the interference bracket to reset, which can achieve the purpose of releasing the interference between the interference bracket and the positioning seat. Under the action of the elastic force of the eighth spring, the positioning seat is automatically reset, which can prevent the gas riser body from hitting the positioning seat during unloading.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A gas riser air tightness test device, comprising a test seat, characterized in that: An electric push rod is fixed on the test seat. An installation bracket is slidably connected to the output end of the electric push rod. A first spring is fixed between the output shaft of the electric push rod and the installation bracket. A plurality of vent rods are fixed on the installation bracket. A first sealing plug is fixed at one end of the vent rod. And the other end of the vent rod is connected to a strip-shaped vent seat. The vent rod is communicated with the first sealing plug. A gas pressure sensor is fixed on the vent rod. A plurality of installation sockets are fixed at the other end of the test seat. A second sealing plug is fixed in the installation socket; A gas riser main body is provided on the test seat. A branch pipe is welded on the gas riser main body. The two ends of the gas riser main body are respectively inserted into the first sealing plug and the second sealing plug. A plurality of positioning seats are provided on the test seat. A third sealing plug is slidably connected to the positioning seat. A second spring is connected between the third sealing plug and the positioning seat. An L-shaped abutting block is fixed at the lower end of the third sealing plug; A strip-shaped plate is fixed at the end of the electric push rod. A plurality of rectangular rods are fixed on the strip-shaped plate. A strip-shaped abutting block I is fixed on the rectangular rod. Fourth guide rods are respectively fixed on both sides of the installation bracket. The fourth guide rods are slidably connected to the test seat; Two first chutes are provided on the positioning seat. A first slide rod is fixed in the first chute. A positioning bracket is slidably connected to the first slide rod. The positioning bracket is elastically connected to the positioning seat through a third spring. A first abutting wedge block is fixed at the lower end of the positioning bracket; A first guide rod is slidably connected to the positioning seat. A U-shaped abutting block is fixed at one end of the first guide rod. The U-shaped abutting block abuts against the first abutting wedge block. The first guide rod is elastically connected to the positioning seat through a fourth spring; A first guide block is fixed at one end of the positioning seat. A abutting rod is slidably connected to the first guide block. A fifth spring is connected between the abutting rod and the first guide block. An L-shaped abutting frame is slidably connected to the positioning seat. A sixth spring is connected between the L-shaped abutting frame and the positioning seat. One end of the L-shaped abutting frame abuts against the U-shaped abutting block. And the other end of the L-shaped abutting frame abuts against the abutting rod; The electric push rod pushes the installation bracket to move horizontally, so that the first sealing plug seals the gas riser main body. The electric push rod continues to move,带动矩形杆在定位座内移动,使条形抵触块一与抵触杆抵触,通过抵触杆、L形抵触架以及匚形抵触块的联动,使匚形抵触块与第一抵触楔块抵触,使支管位置摆正,条形抵触块一与L型抵触块抵触,第三密封堵头上移插到支管内部进行封堵。 2. The gas riser air tightness testing device according to claim 1, characterized in that: A piston cylinder is fixed on the test seat. A piston piece is slidably connected in the piston cylinder. A second guide block is fixed on the piston cylinder. A piston rod is fixed on the piston piece.The piston rod is elastically connected to the second guide block through a seventh spring. An air outlet is connected to the piston cylinder.

3. The gas riser air tightness testing device according to claim 2, characterized in that: A first inflatable sealing ring is installed on the first sealing plug, a first inflatable port connected to the first inflatable sealing ring is provided on the mounting bracket, a second inflatable sealing ring is installed on the second sealing plug, a second inflatable port connected to the second inflatable sealing ring is provided on the mounting socket, a third inflatable sealing ring is installed on the third sealing plug, a third inflatable port connected to the third inflatable sealing ring is provided on the L-shaped resistance block, and the air outlet is respectively connected to the first inflatable port, the second inflatable port and the third inflatable port through pipes.

4. The gas riser air tightness testing device according to claim 3, characterized in that: A second slide groove is provided on the test seat, a third guide rod is fixed in the second slide groove, a third guide block is fixed on the positioning seat, the third guide block is elastically connected to the third guide rod through an eighth spring, a conflict bracket is fixed on the strip plate, and the conflict bracket conflicts with the positioning seat.

5. The gas riser air tightness testing device according to claim 4, characterized in that: A second sliding rod is slidably connected to the mounting socket, one end of the second sliding rod is against the end of the gas riser body, and a sliding bracket is fixed to the other end of the second sliding rod. The sliding bracket is elastically connected to the test seat through a ninth spring, and a strip-shaped interference block 2 is fixed to one end of the sliding bracket.

6. The gas riser air tightness testing device according to claim 5, characterized in that: One end of the rectangular rod is slidably connected to a third sliding rod, an upper end of the third sliding rod is fixed with a second abutting wedge, and a tenth spring is connected between the third sliding rod and the rectangular rod.

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