A pressure pipeline detection device

Abstract

The present invention discloses a pressure pipeline detection device, which relates to the technical field of pipeline detection. The present invention includes: a base, on the top of which a telescopic member is installed, and a water outlet pipe and a water inlet pipe are provided on the telescopic member. The inside of the telescopic member is hollow and one end is open; a sealing member is installed at the open end of the telescopic member, which is used to connect with one end of the pipeline to be detected inside, and the opening at one end of the pipeline to be detected is blocked through the sealing member; a support member is detachably arranged inside the telescopic member, which is used to support the pipeline to be detected, and the pipeline to be detected is kept coaxial with the telescopic member through the support member. The design of the telescopic member in the present invention can effectively perform airtight detection on pipelines of different lengths, improving the applicability. Moreover, with the cooperation of the support member and the sealing member, it is ensured that the pipeline to be detected is connected to the air inlet pipe after installation, and when detecting pipelines of different diameters, the air inlet pipe can smoothly introduce air into the pipeline to be detected.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection devices, and particularly relates to a pressure pipeline detection device. Background Art

[0002] A pressure pipeline refers to all pipelines that bear internal or external pressure. A pressure pipeline is a type of pipeline used to transport the medium inside it.

[0003] When a pressure pipeline is produced, in order to detect whether there are damages on the outer surface of the pressure pipeline, it is necessary to conduct a pneumatic test on the pressure pipeline. When the existing pressure pipeline is detected, generally, both ends of the pressure pipeline are sealed, and an air inlet pipe is provided at one of the sealed ends. Then, the sealed pressure pipeline is placed into a water tank, and gas is input into the air inlet pipe. Observe whether there are bubbles in the water. If there are, it indicates that there are damages on the outer surface of the pressure pipeline. However, in this detection method, when detecting a longer pipeline, the pipeline cannot be placed into the water tank, so the water tank needs to be replaced, which is inconvenient to use. Therefore, the applicability is relatively low when conducting an airtight test on the pipeline, and it is difficult to meet the needs of the detection personnel.

[0004] In view of the above situation, the present invention proposes a pressure pipeline detection device. Summary of the Invention

[0005] The purpose of the present invention is: to solve the problems in the above background art, the present invention provides a pressure pipeline detection device.

[0006] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0007] A pressure pipeline detection device includes:

[0008] A base, on the top of which a telescopic member is installed. An outlet pipe and an inlet pipe are provided on the telescopic member. The inside of the telescopic member is hollow and one end is open;

[0009] A plugging member, installed at the open end of the telescopic member, which is used to connect with one end of the pipeline to be detected inside, and the opening at one end of the pipeline to be detected is plugged through the plugging member;

[0010] A support member, detachably arranged inside the telescopic member, which is used to support the pipeline to be detected, so that the pipeline to be detected and the telescopic member are kept coaxial through the support member;

[0011] An air injection disc, installed at the end of the telescopic member far from its opening. The other end of the pipeline to be detected abuts against the air injection disc. An air inlet pipe is communicated with the air injection disc. When the pipeline to be detected abuts against the air injection disc, the air inlet pipe is kept in communication with the inside of the pipeline to be detected.

[0012] Further, the telescopic member includes a sealing sleeve horizontally configured on the base. A sliding sleeve is horizontally and slidably mounted on the base. A sliding ring groove is formed at one end of the sliding sleeve and is located at the wall thickness of the sliding sleeve. The sealing sleeve is slidably inserted into the sliding ring groove. An adjusting member for driving the sliding sleeve to move is mounted on the base.

[0013] Further, the adjusting member includes an adjusting screw horizontally and rotatably mounted on the base. A connecting member that is threadedly engaged with the adjusting screw is configured on the sliding sleeve. When the adjusting screw rotates, the connecting member drives the sliding sleeve to move.

[0014] Further, the connecting member includes a sliding frame horizontally and slidably mounted on the base. The sliding frame is disposed on the sliding sleeve. An adjusting long plate that is threadedly sleeved on the adjusting screw is horizontally and slidably mounted on the base. There are intervals between the head and tail ends of the adjusting long plate and the head and tail ends of the adjusting screw respectively. The adjusting long plate is detachably connected to the sliding frame.

[0015] Further, a plugging plate is vertically and slidably mounted on the sliding frame. The plugging plate has two vertical sections. Plugging tooth grooves are formed on the opposite sides of the two vertical sections of the plugging plate. Strip-shaped slots for inserting the plugging tooth grooves are formed on the opposite sides in the length direction of the adjusting long plate. A limiting plate is horizontally and slidably mounted on the sliding frame. A limiting groove for inserting the limiting plate is formed on one side of the plugging plate.

[0016] Further, an annular convex plate is formed along the edge at the end of the sliding sleeve away from the air injection disc. An annular inclined groove is formed along the inner edge of the annular convex plate. Two plate bodies are configured on the sliding sleeve. A moving plate is slidably mounted between the two plate bodies. A sliding ring plate is configured on the moving plate. A conical ring is formed at one end of the sliding ring plate. The conical ring is used to abut against the annular inclined groove. The sliding ring plate is sleeved on the sealing sleeve. A connecting spring is mounted between the sliding ring plate and the sliding sleeve.

[0017] Further, a fixing frame is configured on the sliding sleeve. The sliding frame is elastically connected to the fixing frame by a high-pressure spring. A transmission member acting on the sliding frame and the moving plate is provided on the sliding sleeve. When the sliding frame moves on the fixing frame, the conical ring is pressed tightly against the annular inclined groove through the transmission member.

[0018] Further, the transmission member includes a sliding arc plate slidably mounted on the sliding sleeve. A first rack is mounted on the sliding arc plate, and a second rack is mounted on the moving plate. A driving gear meshing with the first rack and the second rack is rotatably mounted on the two plates. The first rack and the second rack are vertically distributed. A hook plate for contacting one side of the sliding arc plate is constructed on the sliding frame. When the high-pressure spring is in a normal state, there is a gap between the hook plate and one side of the sliding arc plate.

[0019] Further, the plugging member includes a sealing flange plate bolted to the open end of the sealing sleeve. A sliding rod slidably penetrates through the center of the sealing flange plate. One end of the sliding rod is constructed with a docking flange plate for connecting to one end of the pipeline to be tested. Thread grooves are formed in the outer peripheral side portion of the sliding rod located outside. A threaded cylinder is threadedly sleeved on the sliding rod. A sealing washer is sleeved on the sliding rod. One end of the threaded cylinder presses against the sealing washer.

[0020] Further, the support member includes a support ring plate movably inserted into the sliding sleeve. A driving screw is screwed into the support ring plate. An adjusting ring plate is slidably inserted into the inner peripheral side of the support ring plate. The adjusting ring plate is threadedly sleeved on the driving screw. A plurality of support plates are rotatably mounted in a circular array on the inner peripheral side of the support ring plate. A hinge rod is hinged between one side of the support plate and the adjusting ring plate. The free end of the support plate is for contacting the outer wall of the pipeline to be tested.

[0021] The beneficial effects of the present invention are as follows:

[0022] The design of the telescopic member of the present invention can effectively perform airtight detection on pipelines of different lengths, improving applicability. And with the cooperation of the support member and the plugging member, it is ensured that the pipeline to be tested is connected to the air inlet pipe after installation, and when detecting pipelines of different diameters, the air inlet pipe can smoothly introduce air into the pipeline to be tested. Description of the Drawings

[0023] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0024] Figure 2 is the present invention Figure 1 partial three-dimensional sectional view;

[0025] Figure 3 is the present invention Figure 1 another partial three-dimensional sectional view;

[0026] Figure 4 is a schematic diagram of a part of the structure of the present invention;

[0027] Figure 5 is a schematic diagram of another part of the structure of the present invention;

[0028] Figure 6 It is a schematic diagram of another part of the structure of the present invention;

[0029] Figure 7 is the present invention Figure 2 an enlarged view of the structure at position A in;

[0030] Figure 8 is the present invention Figure 3 an enlarged view of the structure at position B in;

[0031] Figure 9 is the present invention Figure 3 an enlarged view of the structure at position C in;

[0032] Figure 10 is the present invention Figure 3 an enlarged view of the structure at position D in;

[0033] Reference numerals: 1, base; 2, telescopic member; 201, sealing sleeve; 202, sliding sleeve; 203, sliding ring groove; 3, water outlet pipe; 4, water inlet pipe; 5, plugging member; 501, sealing flange; 502, sliding rod; 503, threaded groove; 504, threaded cylinder; 505, sealing washer; 506, docking flange; 6, support member; 601, support ring plate; 602, driving screw; 603, adjusting ring plate; 604, support plate; 605, hinged rod; 7, air injection plate; 8, air inlet pipe; 9, adjusting member; 901, adjusting screw; 10, connecting member; 1001, sliding frame; 1002, adjusting long plate; 11, plugging plate; 12, plugging tooth groove; 13, strip-shaped slot; 14, limiting plate; 15, limiting groove; 16, annular convex plate; 17, annular inclined groove; 18, plate body; 19, moving plate; 20, sliding ring plate; 21, conical ring; 22, connecting spring; 23, high-pressure spring; 24, transmission member; 2401, sliding arc plate; 2402, first rack; 2403, second rack; 2404, hook plate; 2405, driving gear; 25, fixed frame. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] As Figures 1 - 10 shown, a pressure pipeline detection device proposed in an embodiment of the present invention includes:

[0036] Base 1, with a telescopic member 2 installed on the top of the base 1. Specifically, the telescopic member 2 includes a sliding part and a fixed part. The fixed part is installed on the base 1. The telescopic member 2 is provided with a water outlet pipe 3 and a water inlet pipe 4. The inside of the telescopic member 2 is hollow and one end of the fixed part is open. The inside of the telescopic member 2 is used to place the pipeline to be detected. Specifically, the telescopic member 2 is made of a transparent material, so that the inspectors can clearly see the pipeline to be detected located inside the telescopic member 2;

[0037] Sealing member 5, installed at the open end of the telescopic member 2, which is used to connect with one end of the pipeline to be detected inside. Through the sealing member 5, one end opening of the pipeline to be detected is blocked. That is to say, when placing the pipeline to be detected inside the telescopic member 2, the sealing member 5 can be installed at the opening of one end of the pipeline to be detected to ensure the sealing performance. Then, the sealing member 5 is installed on the fixed part of the telescopic member 2 to seal one end of the fixed part;

[0038] Support member 6, detachably arranged inside the telescopic member 2, which is used to support the pipeline to be detected. Through the support member 6, the pipeline to be detected is kept coaxial with the telescopic member 2. In order to ensure the coaxiality of the pipeline to be detected and the telescopic member 2, at this time, only need to place the pipeline to be detected on the support member 6, and then seal one end of the pipeline to be detected through the sealing member 5 and connect it with the open end of the fixed part of the telescopic member 2;

[0039] Air injection disc 7, installed at one end of the telescopic member 2 far from its opening, that is, the air injection disc 7 is installed on one end of the sliding part of the telescopic member 2. The other end of the pipeline to be detected abuts against the air injection disc 7. The air injection disc 7 is communicated with an air inlet pipe 8. When the pipeline to be detected abuts against the air injection disc 7, the air inlet pipe 8 is kept in communication with the inside of the pipeline to be detected. When the installation of the sealing member 5 is completed and the pipeline to be detected is placed on the support member 6, at this time, move the sliding part of the telescopic member 2 so that the air injection disc 7 abuts against the other end of the pipeline to be detected. At this time, the sealing of both ends of the pipeline to be detected is completed. Moreover, at this time, the air inlet pipe 8 is kept in communication with the inside of the pipeline to be detected. Subsequently, only need to externally connect a water pipe to inject water into the water inlet pipe 4 until the water inside the telescopic member 2 overflows from the water outlet pipe 3. At this time, the water inlet pipe 4 and the water outlet pipe 3 can be blocked. Preferably, a water valve can be installed on the water inlet pipe 4 and the water outlet pipe 3 to control the opening and closing of the water inlet pipe 4 and the water outlet pipe 3. Then, inject gas into the air inlet pipe 8 through a pressure pump. When it is found that continuous bubbles are generated in the water inside the telescopic member 2, it indicates that the pipeline to be detected is damaged. Compared with the prior art, the design of the telescopic member 2 can effectively perform airtight detection on pipelines of different lengths and improve the applicability.

[0040] Such as Figure 1As shown, the specific structure of the telescopic member 2 is specifically disclosed. The telescopic member 2 includes a sealing sleeve 201 horizontally configured on the base 1. That is to say, the fixed part is the sealing sleeve 201. The water inlet pipe 4 and the water outlet pipe 3 are installed on the sealing sleeve 201. A sliding sleeve 202 is horizontally slidably installed on the base 1. That is to say, the sliding part is the sealing sleeve 201. The air injection disc 7 is installed on the sealing sleeve 201. Preferably, both the sealing sleeve 201 and the sliding sleeve 202 are made of transparent materials, specifically, Pam board material can be used, which has good strength and transparency, improving the service life. One end of the sliding sleeve 202 is provided with a sliding ring groove 203. The sliding ring groove 203 is located at the wall thickness of the sliding sleeve 202. The wall thickness refers to the pipe wall of the sliding sleeve 202, and the pipe wall has a certain thickness. The sealing sleeve 201 is slidably inserted into the sliding ring groove 203. An adjusting member 9 for driving the movement of the sliding sleeve 202 is installed on the base 1. That is to say, the adjusting member 9 can drive the movement of the sliding sleeve 202, so as to ensure applicability to pipelines to be measured with different lengths. And the sliding sleeve 202 is located in the sliding ring groove 203, so that most of the sealing sleeve 201 is located in the sliding ring groove 203 when not in use, reducing the occupied space when not in use.

[0041] As Figure 1 and Figure 3 shown, a partial structure of the adjusting member 9 is disclosed. The adjusting member 9 includes an adjusting screw 901 horizontally and rotatably installed on the base 1. A connecting member 10 that is threadedly engaged with the adjusting screw 901 is configured on the sliding sleeve 202. When the adjusting screw 901 rotates, the connecting member 10 drives the sliding sleeve 202 to move. When the adjusting screw 901 rotates, the adjusting screw 901 moves in cooperation with the connecting member 10 to make the sliding sleeve 202 move, thereby controlling the movement of the sliding sleeve 202 and having self-locking, ensuring the sealing performance between the air injection disc 7 on the sliding sleeve 202 and the pipeline to be measured. Preferably, a sealing ring can be provided on the contact surface between the air injection disc 7 and the pipeline to be measured to further improve the sealing effect.

[0042] As Figure 1 and Figure 8As shown, the specific structure of the connecting member 10 is disclosed. When it is necessary to move the sliding sleeve 202 significantly, the adjusting screw 901 needs to be rotated for a long time. To make it more convenient for the inspectors to use, the connecting member 10 includes a sliding frame 1001 horizontally slidably mounted on the base 1. The sliding frame 1001 is arranged on the sliding sleeve 202. A long adjusting plate 1002, which is threadedly sleeved on the adjusting screw 901, is horizontally slidably mounted on the base 1. There are intervals between the two ends of the adjusting long plate 1002 and the two ends of the adjusting screw 901. The adjusting long plate 1002 is detachably connected to the sliding frame 1001. When it is necessary to move the sliding sleeve 202 significantly, the adjusting long plate 1002 can be disassembled from the sliding frame 1001 at this time. Then the inspector manually moves the sliding sleeve 202. After the sliding sleeve 202 is moved to the desired position, the adjusting long plate 1002 can be connected to the sliding frame 1001 at this time. Then, the adjusting screw 901 can be tightened.

[0043] As Figure 1 , Figure 4 and Figure 8 shown, the specific connection method between the sliding frame 1001 and the adjusting long plate 1002 is disclosed. A plug-in plate 11 is vertically slidably mounted on the sliding frame 1001. The plug-in plate 11 has two vertical sections. Plug-in tooth grooves 12 are provided on the opposite sides of the two vertical sections of the plug-in plate 11. Strip-shaped slots 13 for inserting the plug-in tooth grooves 12 are provided on the opposite sides in the length direction of the adjusting long plate 1002. A limiting plate 14 is horizontally slidably mounted on the sliding frame 1001. A limiting slot 15 for inserting the limiting plate 14 is provided on one side of the plug-in plate 11. After the sliding sleeve 202 is moved to the desired position, the limiting plate 14 can be horizontally moved at this time, so that the limiting plate 14 is disengaged from the corresponding limiting slot 15. Then the plug-in plate 11 is moved downward, so that the plug-in tooth grooves 12 on the plug-in plate 11 are inserted into the strip-shaped slots 13, thereby completing the connection between the sliding frame 1001 and the adjusting long plate 1002. Due to the design of the strip-shaped slots 13 and the plug-in tooth grooves 12, when the plug-in tooth grooves 12 and the strip-shaped slots 13 are misaligned after the sliding sleeve 202 is moved to the desired position, only a small rotation of the adjusting screw 901 is required to ensure that the plug-in tooth grooves 12 are inserted into the strip-shaped slots 13, which is convenient to use.

[0044] As Figure 1 , Figure 5 and Figure 7As shown in the figure, in order to improve the sealing performance between the sliding sleeve 202 and the sealing sleeve 201, an annular convex plate 16 is constructed along the edge at one end of the sliding sleeve 202 away from the gas injection disc 7. An annular inclined groove 17 is constructed along the inner edge of the annular convex plate 16. Two plate bodies 18 are constructed on the sliding sleeve 202. A moving plate 19 is slidably installed between the two plate bodies 18. A sliding ring plate 20 is constructed on the moving plate 19. One end of the sliding ring plate 20 is constructed with a conical ring 21. The conical ring 21 is used to abut against the annular inclined groove 17. The sliding ring plate 20 is sleeved on the sealing sleeve 201. A connecting spring 22 is installed between the sliding ring plate 20 and the sliding sleeve 202. In this embodiment, the abutting force of the connecting spring 22 makes the conical ring 21 abut against the annular inclined groove 17, thereby improving the sealing effect between the sliding sleeve 202 and the sealing sleeve 201 and preventing water seepage at the joint surface between the sliding sleeve 202 and the sealing sleeve 201.

[0045] As Figure 1 and Figure 3 shown in the figure, in order to further improve the sealing effect of the conical ring 21, a fixing frame 25 is constructed on the sliding sleeve 202. The sliding frame 1001 is elastically connected to the fixing frame 25 by a high-pressure spring 23. The high-pressure spring 23 refers to a spring that can work stably under extremely high loads or extreme pressure environments. It usually has ultra-high stiffness, fatigue resistance and corrosion resistance. It is made of high-strength alloy steel (such as 60Si2MnA, 50CrVA), stainless steel (17-7PH) or special alloy (such as Inconel 718), and the tensile strength is improved through quenching + tempering heat treatment. A transmission member 24 acting on the sliding frame 1001 and the moving plate 19 is provided on the sliding sleeve 202. When the sliding frame 1001 moves on the fixing frame 25, the conical ring 21 is pressed tightly against the annular inclined groove 17 through the transmission member 24. After the sliding sleeve 202 moves well and the insertion tooth groove 12 is inserted into the strip-shaped slot 13, at this time, turning the adjusting screw 901 will cause the sliding frame 1001 to move. The movement of the sliding frame 1001 will cause the fixing frame 25 to move through the high-pressure spring 23, thereby causing the sliding sleeve 202 to move and making the gas injection disc 7 abut against one end of the pipeline to be tested. When the adjusting screw 901 is turned continuously, the high-pressure spring 23 will deform. When the high-pressure spring 23 deforms, it means that the gas injection disc 7 abuts against the pipeline to be tested and can achieve the sealing effect. At this time, turning the adjusting screw 901 will cause the sliding frame 1001 to move, which is equivalent to the sliding frame 1001 moving in the fixing frame 25. At this time, the conical ring 21 will be further pressed tightly against the annular inclined groove 17 through the transmission member 24 to improve the sealing effect between the sliding sleeve 202 and the sealing sleeve 201.

[0046] As Figure 1As shown, the specific structure of the transmission member 24 is disclosed. The transmission member 24 includes a sliding arc plate 2401 slidably mounted on the sliding sleeve 202. A first rack 2402 is mounted on the sliding arc plate 2401, and a second rack 2403 is mounted on the moving plate 19. A driving gear 2405 meshing with the first rack 2402 and the second rack 2403 is rotatably mounted on the two plate bodies 18. The first rack 2402 and the second rack 2403 are arranged vertically. A hook plate 2404 for contacting one side of the sliding arc plate 2401 is formed on the sliding frame 1001. When the high-pressure spring 23 is in its normal state, there is a gap between the hook plate 2404 and one side of the sliding arc plate 2401. When the sliding frame 1001 moves relative to the fixed sleeve, the movement of the sliding frame 1001 will drive the hook plate 2404 to move, so that the hook plate 2404 contacts the sliding arc plate 2401 and causes the sliding arc plate 2401 to move. The movement of the sliding arc plate 2401 will cause the first rack 2402 to move. When the first rack 2402 moves, the second rack 2403 will move through the driving gear 2405. As the second rack 2403 moves, the moving plate 19 will also move, so that the conical ring 21 moves in the direction of the annular inclined groove 17 to further improve the sealing effect.

[0047] As Figure 1 and Figure 9 shown, the specific structure of the plugging member 5 is specifically disclosed. The plugging member 5 includes a sealing flange 501 mounted at the open end of the sealing sleeve 201 by bolts. A sliding rod 502 slidably penetrates through the center of the sealing flange 501. One end of the sliding rod 502 is formed with a docking flange 506 for connecting to one end of the pipeline to be measured. A threaded groove 503 is provided on the outer peripheral side of the sliding rod 502 located outside. A threaded cylinder 504 is sleeved on the sliding rod 502 in a threaded manner. A sealing washer 505 is sleeved on the sliding rod 502. One end of the threaded cylinder 504 presses against the sealing washer 505. During use, first, the docking flange 506 is installed at one end of the pipeline to be measured to complete the sealing of one end. Then, the sealing flange 501 is moved so that the sealing flange 501 fits against one end of the sealing sleeve 201. Then, it is installed on the sealing sleeve 201 by bolts. Then, the threaded cylinder 504 is tightened so that the sealing washer 505 abuts between the sliding rod 502 and the sealing flange 501, thereby preventing the water inside the telescopic member 2 from seeping out between the sliding rod 502 and the sealing flange 501.

[0048] As Figure 6As shown, in some embodiments, the support member 6 includes a support ring plate 601 movably inserted into the sliding sleeve 202. A drive screw 602 is screwed into the support ring plate 601. An adjustment ring plate 603 is slidably inserted into the inner peripheral side of the support ring plate 601. The adjustment ring plate 603 is threadedly sleeved on the drive screw 602. A plurality of support plates 604 are rotatably mounted in a circular array on the inner peripheral side of the support ring plate 601. A hinge rod 605 is hinged between one side of the support plate 604 and the adjustment ring plate 603. The free end of the support plate 604 is used to contact the outer wall of the pipeline to be measured. Before inserting the pipeline to be measured into the telescopic member 2, first place the support ring plate 601 on the pipeline to be measured near one end. Then rotate the drive screw 602 to move the adjustment ring plate 603. When the adjustment ring plate 603 moves, it will drive a plurality of hinge rods 605 to move. Since one end of the hinge rod 605 is hinged to the support plate 604, when the adjustment ring plate 603 moves, it will drive the free ends of a plurality of support plates 604 to move towards the pipeline to be measured through the hinge rods 605, so that the free ends of the plurality of support plates 604 abut against the pipeline to be measured. Then insert the end of the pipeline to be measured near the support ring plate 601 into the telescopic member 2 until the support ring plate 601 is located within the sliding sleeve 202, thereby ensuring that the pipeline to be measured is coaxial with the support ring plate 601. Moreover, the design of the plurality of support plates 604 can be applied to coaxial positioning of pipelines with different diameters, improving the applicability.

[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure pipeline detection device, characterized in that: include: A base (1), a telescopic member (2) being mounted on the top of the base (1), a water outlet pipe (3) and a water inlet pipe (4) being provided on the telescopic member (2), the telescopic member (2) being hollow inside and having an opening at one end; A plugging member (5) is mounted on the open end of the telescopic member (2) and is used to connect to one end of the internal pipe to be tested, so as to plug the opening of the pipe to be tested through the plugging member (5); A support member (6) is detachably arranged in the telescopic member (2), and is used to support the pipeline to be tested, so that the pipeline to be tested and the telescopic member (2) are kept coaxial through the support member (6); An air injection disk (7) is mounted on one end of the telescopic member (2) away from the opening thereof, the other end of the pipeline to be tested abuts against the air injection disk (7), an air inlet pipe (8) is connected to the air injection disk (7), and when the pipeline to be tested abuts against the air injection disk (7), the air inlet pipe (8) remains connected to the inside of the pipeline to be tested; The telescopic member (2) comprises a sealing sleeve (201) horizontally constructed on the base (1); a sliding sleeve (202) is horizontally slidably mounted on the base (1); a sliding ring groove (203) is formed at one end of the sliding sleeve (202); the sliding ring groove (203) is located at a thick portion of the wall of the sliding sleeve (202); the sealing sleeve (201) is slidably inserted into the sliding ring groove (203); and an adjusting member (9) for driving the sliding sleeve (202) to move is mounted on the base (1); An annular convex plate (16) is constructed along the edge of one end of the sliding sleeve (202) away from the gas injection disk (7), and an annular inclined groove (17) is constructed along the inner edge of the annular convex plate (16). Two plate bodies (18) are constructed on the sliding sleeve (202), and a movable plate (19) is slidably mounted between the two plate bodies (18). A sliding ring plate (20) is constructed on the movable plate (19), and a conical ring (21) is constructed at one end of the sliding ring plate (20), and the conical ring (21) is used to abut against the annular inclined groove (17). The sliding ring plate (20) is sleeved on the sealing sleeve (201), and a connecting spring (22) is installed between the sliding ring plate (20) and the sliding sleeve (202); The adjusting member (9) comprises an adjusting screw (901) horizontally and rotatably mounted on the base (1); the sliding sleeve (202) is provided with a connecting member (10) threadably matched with the adjusting screw (901); when the adjusting screw (901) rotates, the connecting member (10) drives the sliding sleeve (202) to move; The connecting member (10) comprises a sliding frame (1001) mounted horizontally and slidably on the base (1), the sliding frame (1001) being arranged on the sliding sleeve (202), an adjusting long plate (1002) being threadedly sleeved on the adjusting screw (901) being mounted horizontally and slidably on the base (1), the front and rear ends of the adjusting long plate (1002) being spaced from the front and rear ends of the adjusting screw (901), and the adjusting long plate (1002) being detachably connected to the sliding frame (1001); The sliding sleeve (202) is provided with a fixed frame (25), the sliding frame (1001) is elastically connected to the fixed frame (25) via a high-pressure spring (23), and the sliding sleeve (202) is provided with a transmission member (24) acting on the sliding frame (1001) and the moving plate (19), and when the sliding frame (1001) moves on the fixed frame (25), the transmission member (24) causes the conical ring (21) to be pressed against the annular inclined groove (17); The transmission member (24) comprises a sliding arc plate (2401) slidably mounted on the sliding sleeve (202), a first rack (2402) being mounted on the sliding arc plate (2401), a second rack (2403) being mounted on the movable plate (19), a driving gear (2405) being rotatably mounted on the two plate bodies (18) and meshing with the first rack (2402) and the second rack (2403), the first rack (2402) and the second rack (2403) being distributed up and down, a hook plate (2404) being configured on the sliding frame (1001) for contacting one side of the sliding arc plate (2401), and a gap being left between the hook plate (2404) and one side of the sliding arc plate (2401) when the high-pressure spring (23) is in a normal state.

2. A pressure pipeline detection device according to claim 1, characterized in that: A plug board (11) is vertically slidably mounted on the sliding frame (1001), the plug board (11) having two vertical sections, plugging tooth grooves (12) being provided on opposite sides of the two vertical sections of the plug board (11), strip-shaped slots (13) for inserting the plugging tooth grooves (12) being provided on both sides of the adjusting long plate (1002) in the length direction opposite to each other, a limit plate (14) is horizontally slidably mounted on the sliding frame (1001), and a limit groove (15) for inserting the limit plate (14) is provided on one side of the plug board (11).

3. A pressure pipeline detection device according to claim 1, characterized in that: The plugging member (5) comprises a sealing flange (501) mounted on the open end of the sealing sleeve (201) by means of bolts, a sliding rod (502) slidingly penetrates the center of the sealing flange (501), one end of the sliding rod (502) is configured with a docking flange (506) for connecting with one end of the pipeline to be tested, a threaded groove (503) is provided on the outer peripheral side of the sliding rod (502), a threaded barrel (504) is threadedly sleeved on the sliding rod (502), a sealing gasket (505) is sleeved on the sliding rod (502), and one end of the threaded barrel (504) is pressed against the sealing gasket (505).

4. A pressure pipeline detection device according to claim 1, characterized in that: The support member (6) comprises a support ring plate (601) movably inserted into the sliding sleeve (202), a driving screw (602) being threadedly screwed into the support ring plate (601), an adjusting ring plate (603) being slidably inserted into the inner circumference of the support ring plate (601), the adjusting ring plate (603) being threadedly sleeved on the driving screw (602), a plurality of support plates (604) being rotatably mounted in a circular array on the inner circumference of the support ring plate (601), a hinged rod (605) being hingedly connected between one side of the support plate (604) and the adjusting ring plate (603), and a free end of the support plate (604) being used to contact the outer wall of the pipeline to be tested.

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