A polytetrafluoroethylene bellows performance detection device

Abstract

The application relates to the technical field of pipeline detection, and particularly discloses a polytetrafluoroethylene corrugated pipe performance detection device which is used to solve the inconvenient testing problem of the prior art; the device comprises a test box, the outer side of the test box is provided with a perspective door group, the inside of the test box is provided with a bearing component for supporting a corrugated pipe A, the position of the corrugated pipe A is transferred through the bearing component, so that the position of the corrugated pipe A can be quickly adjusted, the inside of the test box is provided with two symmetrically arranged expansion components, and the two ends of the corrugated pipe A are blocked through the expansion components. The application is designed according to the existing needs, the corrugated pipe can be quickly adjusted and positioned, then the two ends are quickly clamped and blocked, liquid and gas are filled, the corrugated pipe is quickly detected according to the filling pressure, and the test can be intuitively observed during the detection.

Description

Technical Field

[0001] This invention relates to the field of pipeline testing technology, and in particular to a device for testing the performance of polytetrafluoroethylene (PTFE) corrugated pipes. Background Technology

[0002] Polytetrafluoroethylene (PTFE) corrugated pipe is a new type of lightweight pipe material made from high-density polyethylene (HDPE). Its excellent pipe wall structure design results in superior chemical stability, strong resistance to external pressure, low friction coefficient, large flow rate, long service life, and resistance to aging and environmental stress cracking. Currently, HDPE double-wall corrugated pipes require quality inspection after production to prevent substandard pipes from entering the market. Therefore, crack detection of the pipe wall is necessary. Patent publication number CN113984303B discloses a corrugated pipe performance testing device, which utilizes the rise and fall of liquid and the pressure change of gas at the outer top to detect the location of sealing defects. After the airtightness test, the device is used to further test the pressure resistance of the corrugated pipe. However, this method requires the pipe to be installed inside the pipe, making direct observation of the actual test impossible. Furthermore, it is not convenient to test different pipes, resulting in significant limitations. Additionally, sealing the corrugated pipe is complex and inefficient.

[0003] Based on this, a performance testing device for polytetrafluoroethylene corrugated pipes is now provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0004] The purpose of this invention is to provide a performance testing device for polytetrafluoroethylene corrugated pipes, which solves the problem of inconvenient testing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A performance testing device for polytetrafluoroethylene (PTFE) corrugated pipe includes a test chamber with a viewing door assembly on the outside. Inside the test chamber is a support component for supporting the corrugated pipe A, which allows for rapid adjustment of the pipe's position. The test chamber also contains two symmetrically arranged expansion components that seal both ends of the corrugated pipe A. These expansion components are connected to a filling component for introducing gas or liquid into the corrugated pipe A to test its actual operating condition. The expansion components and the support component are electrically connected to a control panel located outside the test chamber.

[0007] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In one alternative embodiment: the expansion component includes a sealing tube with a tapered head at one end and a discharge port at the other end. The sealing tube also has a connection port at its tail end that mates with a filling component. A receiving ring groove is formed on the outer side of the sealing tube near the tapered head, and an expansion rubber ring is positioned at the location of the receiving ring groove. A buffer ring box is rotatably mounted on the outer side of the sealing tube. The buffer ring box is connected to the receiving ring groove via multiple air channels. A vertical rod is connected to the outer side of the buffer ring box, and an air passage is provided inside the vertical rod. The vertical rod is connected to a feed drive component for moving it closer to or away from the bellows A. The sealing tube is also connected to a tilting drive component for rotating it.

[0009] In one alternative embodiment: the flipping drive includes an adjusting bracket fixedly connected to the vertical rod, an adjusting motor is fixedly mounted on the adjusting bracket, an adjusting worm is provided at the output end of the adjusting motor, the adjusting worm is rotatably connected to the adjusting bracket, and an adjusting worm wheel is provided on the outside of the sealing tube, the adjusting worm wheel meshing with the adjusting worm.

[0010] In one alternative embodiment: the feed drive component includes two feed sliders slidably mounted on a horizontal crossbar. Both ends of the horizontal crossbar are fixedly connected to the inner wall of the test chamber. The lower end of each feed slider is connected to a vertical rod. Two threaded blocks are provided between the two feed sliders, threaded onto a threaded rod. One end of the threaded rod is rotatably connected to the inner wall of the test chamber, and the other end is connected to a feed motor for driving its rotation. The feed motor is fixedly mounted on the outside of the test chamber. Each threaded block has a compression vertical plate at its lower end. The threaded rod has threaded areas that match the two threaded blocks, with opposite rotation directions. A limiting traction component is provided between the feed slider and the threaded blocks. An inflation component, corresponding to the compression vertical plate, is provided below the horizontal crossbar for inflating the expansion component.

[0011] In one alternative embodiment: the inflation component includes a horizontally positioned piston cylinder, the outer side of which is connected and fixed to the inner wall of the test chamber via a positioning bracket rod. A piston plate is slidably provided at each end of the piston cylinder, the outer end of which is connected to a piston rod. A positioning sleeve is fixedly provided at the end of the piston cylinder, the positioning sleeve having a through hole that slides with the piston rod. A piston push plate is provided at the outer end of the piston rod, the piston push plate being connected to the positioning sleeve via a piston return spring. An exhaust pipe is connected to the lower middle position of the piston cylinder, and the exhaust pipe is connected to a vertical suspension rod via a ducted air hose.

[0012] In one alternative embodiment: the limiting traction component includes a first traction block disposed on the outside of the feed slider, a second traction block disposed on the outside of the threaded block, the second traction block and the first traction block being connected by an elastic traction rope, the feed slider being provided with an avoidance notch to facilitate the threaded rod passing through, the transverse crossbar being provided with a limiting stop to limit the stroke of the feed slider, and a return spring being provided between the limiting stop and the feed slider.

[0013] In one alternative: the filling component includes a first pipe rotatably disposed at the outer end of the sealing tube, a second pipe slidably disposed at the end of the first pipe, a sealing ring being provided between the second pipe and the first pipe, one of the second pipes being connected to a feeding unit for feeding material into the bellows A, and the other second pipe being connected to a receiving unit for recovering liquid or gas in the bellows A.

[0014] In one alternative: the feeding unit includes a liquid inlet pipe and a gas inlet pipe connected to the outside of a second pipe. The liquid inlet pipe is equipped with a first solenoid valve, and the lower end of the liquid inlet pipe is connected to a liquid pump. The suction end of the liquid pump extends into a liquid storage tank. The gas inlet pipe is equipped with a second solenoid valve, and the lower end of the gas inlet pipe is connected to the output end of a gas pump. The suction end of the gas pump extends into a gas storage tank.

[0015] In one alternative embodiment: the receiving unit includes a gas recovery pipe connected to the outside of another second pipe and a third solenoid valve. The lower end of the gas recovery pipe is connected to a gas recovery tank. A fourth solenoid valve is provided on the gas recovery pipe. The lower end of the third solenoid valve is connected to a liquid recovery tank. A liquid recovery pipe is provided on the third solenoid valve.

[0016] In one alternative: the supporting component includes a horizontally arranged supporting plate, a guide is provided between the supporting plate and the test box, a displacement push rod is installed on the test box, the output end of the displacement push rod is connected to the supporting plate through a push connecting rod, and a fine-tuning support is provided at the upper end of the supporting plate for fine-tuning the position of the bellows A.

[0017] In one alternative embodiment: the fine-tuning support includes symmetrically arranged support slides on the support plate, the support slides being slidably disposed from the support plate, a transmission screw hole being provided at the middle position of the two support slides, and a fine-tuning screw being fitted in the two transmission screw holes, the fine-tuning screw having a threaded area matching the two support slides, the threads of the two threaded areas having opposite directions, one end of the fine-tuning screw being connected to the output end of the fine-tuning motor, the other end of the fine-tuning screw being rotatably connected to a fixed block on the support plate, the fine-tuning motor being fixedly connected to the upper end of the support plate, and multiple triangular support blocks being provided at the upper end of each of the two support slides, the two rows of triangular support blocks forming a V-shaped support surface for supporting the bellows A.

[0018] In one alternative: the guide includes at least two displacement sleeves connected to the test chamber, and a displacement rod connected to a bearing plate is slidably mounted on the displacement sleeve.

[0019] In one alternative: the viewing door assembly includes a sliding opening on the front of the test chamber, and a movable door is slidably fitted at the sliding opening position. The movable door is provided with an observation window for easy observation, and the observation window is made of tempered glass.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention is designed to meet existing needs, facilitating rapid adjustment and positioning of the bellows. It then uses quick clamping and sealing at both ends, combined with liquid and gas filling, to rapidly test the bellows based on the filling pressure. The testing process also allows for direct observation, and the bellows can be flipped during testing to allow for observation of its surroundings, avoiding blind spots. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of one side of the invention.

[0023] Figure 2 This is a schematic diagram of the structure on the other side of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the open view door assembly of the present invention.

[0026] Figure 5 This is a schematic diagram of the feed drive component structure of the present invention.

[0027] Figure 6 For the present invention Figure 5 A magnified view of a portion of the structure.

[0028] Figure 7 This is a schematic diagram of the expansion component structure of the present invention.

[0029] Figure 8 This is a schematic diagram of the load-bearing component structure of the present invention.

[0030] Figure label annotations: Test box 100, movable door 101, observation window 102, control panel 103;

[0031] First pipe 201, second pipe 202, first solenoid valve 203, liquid pump 204, liquid storage tank 205, air pump 206, gas storage tank 207, second solenoid valve 208, liquid recovery tank 209, liquid recovery pipe 210, third solenoid valve 211, gas recovery tank 212, fourth solenoid valve 213, gas recovery pipe 214;

[0032] Expansion component 300, adjusting worm gear 301, adjusting motor 302, adjusting worm 303, adjusting bracket 304, buffer ring box 305, vertical hanging rod 306, air guide channel 307, expansion rubber ring 308, conical head 309, sealing tube 310, receiving ring groove 311, piston cylinder 312, positioning sleeve 313, positioning bracket rod 314, piston return spring 315, piston push plate 316, exhaust pipe 317, piston plate 318, air guide hose 319;

[0033] Feed drive component 400, feed slider 401, clearance notch 402, return spring 403, threaded block 404, threaded rod 405, transverse crossbar 406, first traction block 407, elastic traction rope 408, second traction block 409, extrusion vertical plate 410, feed motor 411, limit stop block 412;

[0034] The components include: bearing component 500, bearing plate 501, support slide block 502, displacement slide rod 503, displacement slide sleeve 504, displacement push rod 505, push connecting rod 506, triangular support block 507, fine-tuning motor 508, and fine-tuning screw 509.

[0035] Bellows A. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1-8As shown, this embodiment of the invention provides a performance testing device for polytetrafluoroethylene (PTFE) corrugated pipes, including a test chamber 100. A viewing door assembly is provided on the outside of the test chamber 100. A support component 500 is provided inside the test chamber 100 to support a corrugated pipe A. The support component 500 is used to move the position of the corrugated pipe A, allowing for rapid adjustment of its position. Two symmetrically arranged expansion components 300 are provided inside the test chamber 100 to seal both ends of the corrugated pipe A. The expansion components 300 are connected to a filling component for filling the corrugated pipe A with gas or liquid to test its actual usage state. The expansion components 300 and the support component 500 are electrically connected to a control panel 103 located outside the test chamber 100.

[0038] The expansion component 300 includes a sealing tube 310. The sealing tube 310 has a tapered head 309 at one end, with a discharge port at the end of the tapered head 309. The sealing tube 310 also has a connection port at its tail end for docking with a filling component. A receiving ring groove 311 is formed on the outer side of the sealing tube 310 near the tapered head 309. An expansion rubber ring 308 is positioned at the location of the receiving ring groove 311. A buffer ring box 305 is rotatably mounted on the outer side of the sealing tube 310. The buffer ring box 305 communicates with the receiving ring groove 311 through multiple air channels 307. A vertical rod 306 is connected to the outside of the box 305. The vertical rod 306 has an air passage inside. The vertical rod 306 is connected to a feed drive component 400 for moving it closer to or away from the bellows A. The feed drive component 400 can achieve both the insertion of the plugging tube 310 into the bellows A and the sealing of the plugging tube 310 with the inner wall of the bellows A, which achieves two goals and helps to improve processing efficiency. The plugging tube 310 is also connected to a flip drive component for rotating it. The flip drive component can drive the bellows A to rotate, so that the bellows A under test can be observed from all sides.

[0039] The flipping drive includes an adjusting bracket 304 fixedly connected to the vertical rod 306. An adjusting motor 302 is fixedly mounted on the adjusting bracket 304. An adjusting worm 303 is provided at the output end of the adjusting motor 302. The adjusting worm 303 is rotatably connected to the adjusting bracket 304. An adjusting worm wheel 301 is provided on the outside of the sealing tube 310. The adjusting worm wheel 301 and the adjusting worm 303 mesh with each other. In this way, the adjusting motor 302 can drive the adjusting worm 303 to rotate. The adjusting worm 303 and the adjusting worm wheel 301 match each other to drive the sealing tube 310 to rotate. In this way, the bellows A can be turned.

[0040] The feed drive component 400 includes two feed sliders 401, which are slidably mounted on a horizontal crossbar 406. Both ends of the horizontal crossbar 406 are fixedly connected to the inner wall of the test chamber 100. The lower ends of the feed sliders 401 are connected to a vertical suspension rod 306. Two threaded blocks 404 are provided between the two feed sliders 401, and the two threaded blocks 404 are threaded onto a threaded rod 405. One end of the threaded rod 405 is rotatably connected to the inner wall of the test chamber 100, and the other end of the threaded rod 405 is connected to a feed motor 411 for driving its rotation. The feed motor 411 is fixedly mounted on the outside of the test chamber 100. Each threaded block 404 has a compression vertical plate 410 at its lower end. The threaded rod 405 has a... Two threaded blocks 404 have matching threaded areas with opposite rotation directions. A limiting traction member is provided between the feed slider 401 and the threaded blocks 404. The feed motor 411 drives the threaded rod 405 to rotate. The threaded rod 405 matches the threaded blocks 404, so that the threaded blocks 404 slide along the transverse bar 406. When the threaded blocks 404 slide, the limiting traction member can drive the feed slider 401 to move a fixed distance toward the bellows A. Below the transverse bar 406 is an inflation member that corresponds to the extrusion vertical plate 410 and inflates the expansion component 300. The inflation member can inflate the expansion rubber ring 308 in the expansion component 300, so that the outer side of the expansion rubber ring 308 presses against the inner wall of the bellows A to achieve a seal.

[0041] The inflation component includes a horizontally positioned piston cylinder 312. The outer side of the piston cylinder 312 is connected and fixed to the inner wall of the test chamber 100 via a positioning bracket rod 314. A piston plate 318 is slidably mounted at each end of the piston cylinder 312, with the outer end of the piston plate 318 connected to a piston rod. A positioning sleeve 313 is fixedly mounted at the end of the piston cylinder 312, and the positioning sleeve 313 has a through hole for sliding cooperation with the piston rod. A piston push plate 316 is mounted at the outer end of the piston rod, and the piston push plate 316 is connected to the positioning sleeve 313 via a piston return spring 315. An exhaust pipe 317 is connected to the lower middle position of the piston cylinder 312. The air cylinder 317 is connected to the vertical rod 306 via the air guide hose 319. When the threaded block 404 moves horizontally, the compression plate 410 at the lower end of the threaded block 404 will exert a thrust on the piston push plate 316, thereby causing the piston plate 318 to compress the air inside the piston cylinder 312. This allows the gas to enter the vertical rod 306 along the exhaust pipe 317 and the air guide hose 319, thereby inflating the expansion component 300. The gas then enters the buffer ring box 305 along the vertical rod 306, and then enters the receiving ring groove 311 along the buffer ring box 305 and the air guide channel 307, thereby causing the expansion rubber ring 308 to expand, so as to achieve inflation and sealing.

[0042] The limiting traction component includes a first traction block 407 disposed outside the feed slider 401, a second traction block 409 disposed outside the threaded block 404, and the second traction block 409 and the first traction block 407 connected by an elastic traction rope 408. The feed slider 401 is provided with an avoidance notch 402 to facilitate the passage of the threaded rod 405. The transverse crossbar 406 is provided with a limiting stop 412 to limit the stroke of the feed slider 401. A return spring 403 is provided between the limiting stop 412 and the feed slider 401. When the threaded block 404 moves along the threaded rod 405, the second traction block 409, the elastic traction rope 408 and the first traction block 407 cooperate to drive the feed slider 401 to slide along the transverse crossbar 406. When it slides to the position of the limiting stop 412, the feed slider 401 will stop moving forward. At this time, the sealing tube 310 in the expansion component 300 has entered the bellows A.

[0043] The filling component includes a first pipe 201 rotatably disposed at the outer end of the sealing tube 310, a second pipe 202 slidably disposed at the end of the first pipe 201, a sealing ring being provided between the second pipe 202 and the first pipe 201, one of the second pipes 202 being connected to a feeding unit for feeding material into the bellows A, and the other second pipe 202 being connected to a receiving unit for recovering liquid or gas in the bellows A, and the bellows A being tested through the cooperation of the receiving unit and the feeding unit;

[0044] The feeding unit includes a liquid inlet pipe and a gas inlet pipe connected to the outside of a second pipe 202. The liquid inlet pipe is equipped with a first solenoid valve 203, and the lower end of the liquid inlet pipe is connected to a liquid pump 204. The suction end of the liquid pump 204 extends into a liquid storage tank 205. The gas inlet pipe is equipped with a second solenoid valve 208, and the lower end of the gas inlet pipe is connected to the output end of a gas pump 206. The suction end of the gas pump 206 extends into a gas storage tank 207. In this way, the gas stored in the gas storage tank 207 can be sent into the bellows A by the gas pump 206 for testing.

[0045] The receiving unit includes a gas recovery pipe 214 connected to the outside of another second pipe 202 and a third solenoid valve 211. The lower end of the gas recovery pipe 214 is connected to the gas recovery tank 212. A fourth solenoid valve 213 is provided on the gas recovery pipe 214. The lower end of the third solenoid valve 211 is connected to the liquid recovery tank 209. A liquid recovery pipe 210 is provided on the third solenoid valve 211. When recovering gas, the tested gas enters the second pipe 202 along the first pipe 201, and then enters the gas recovery tank 212 along the gas recovery pipe 214. Similarly, the liquid will enter the liquid recovery tank 209 along the third solenoid valve 211.

[0046] Both liquids and gases here are controlled by valves, so there's no need to worry about cross-flow.

[0047] The supporting component 500 includes a horizontally arranged supporting plate 501. A guide is provided between the supporting plate 501 and the test box 100. A displacement push rod 505 is installed on the test box 100. The output end of the displacement push rod 505 is connected to the supporting plate 501 through a push connecting rod 506. In this way, the displacement push rod 505 can drive the push connecting rod 506 to move, and the push connecting rod 506 can drive the supporting plate 501 to move horizontally, thereby pushing the supporting plate 501 out of the test box 100 to facilitate the loading of the corrugated pipe A. The upper end of the supporting plate 501 is provided with a fine-tuning support for fine-tuning the position of the corrugated pipe A. The position of the corrugated pipe A can be quickly adjusted through the fine-tuning support.

[0048] The fine-tuning support includes support slides 502 symmetrically arranged on the support plate 501. The support slides 502 and the support plate 501 are slidably connected. A transmission screw hole is provided between the two support slides 502, and a fine-tuning screw 509 is fitted into each of the two transmission screw holes. The fine-tuning screw 509 has threaded areas that match the two support slides 502, with the threads in opposite directions. One end of the fine-tuning screw 509 is connected to the output end of the fine-tuning motor 508, and the other end is rotatably connected to a fixed block on the support plate 501. The fine-tuning motor 508 is fixed to the upper end of the support plate 501. The two support slides 502 are connected in a fixed manner. Each of the two support slides 502 has multiple triangular support blocks 507 on its upper end. The two rows of triangular support blocks 507 form a V-shaped support surface for supporting the bellows A. Since the bellows A is a cylindrical structure, the V-shaped support surface here can quickly adjust the centering of the bellows A. When it is necessary to adjust the height of the bellows A, the fine adjustment screw 509 is driven by the fine adjustment motor 508 to rotate relative to the support slides 502. Under the action of the screw, the two support slides 502 move closer or further apart, thereby adjusting the support height of the bellows A, which is convenient for subsequent sealing operations. In this way, bellows of different diameters can be adjusted.

[0049] The guide includes at least two displacement sleeves 504 connected to the test box 100. A displacement slide rod 503 connected to a bearing plate 501 is slidably provided on the displacement sleeve 504, so that the bearing plate 501 can slide horizontally and smoothly.

[0050] The transparent door assembly includes a sliding opening on the front of the test chamber 100, and a movable door 101 is slidably fitted at the sliding opening. The movable door 101 is provided with an observation window 102 for easy observation. When testing, the movable door 101 needs to be closed, and the test status can be observed through the observation window 102. The observation window 102 is made of tempered glass.

[0051] Working principle: In use, first obtain the bellows A of the target length, and then place the bellows A on the bearing component 500. Since the bellows A is a cylindrical structure, the V-shaped support surface here can quickly center and adjust the bellows A. When it is necessary to adjust the height of the bellows A, simply drive the fine adjustment screw 509 to rotate relative to the support slide 502 through the fine adjustment motor 508. Under the action of the thread, the two support slides 502 move closer or further apart, thereby adjusting the support height of the bellows A, which is convenient for subsequent sealing operations. In this way, bellows of different diameters can be adjusted. Then, the bellows A is transferred to the inside of the test box 100 and the transparent door assembly is closed.

[0052] The feed motor 411 drives the threaded rod 405 to rotate. The threaded rod 405 matches the threaded block 404, so that the threaded block 404 slides along the transverse bar 406. When the threaded block 404 slides, the feed slider 401 can be moved a fixed distance toward the bellows A by the limiting traction member. The transverse bar 406 is provided with an inflation member that is inflated to the expansion member 300 corresponding to the extrusion vertical plate 410.

[0053] By sealing the end of the bellows A of the inflation component, when the threaded block 404 moves horizontally, the extrusion plate 410 at the lower end of the threaded block 404 will exert a thrust on the piston push plate 316, thereby causing the piston plate 318 to compress the air inside the piston cylinder 312, so that the gas enters the vertical hanger 306 along the exhaust pipe 317 and the air guide hose 319, thereby inflating the expansion component 300. The gas enters the buffer ring box 305 along the vertical hanger 306, and then enters the receiving ring groove 311 along the buffer ring box 305 and the air guide channel 307, thereby causing the expansion rubber ring 308 to expand, so as to achieve inflation sealing.

[0054] Liquid or gas can be fed into the bellows A through the feeding unit. The first pipe 201 is also equipped with a pressure gauge to detect the pressure value, which facilitates the control of the amount of material fed in and can also test the ultimate pressure bearing capacity of the bellows A. Then, the liquid or gas is collected through the receiving unit.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A performance testing device for polytetrafluoroethylene corrugated pipes, comprising a test chamber (100), wherein a viewing door assembly is provided on the outside of the test chamber (100), characterized in that: The test chamber (100) is equipped with a support component (500) for supporting the bellows A. The position of the bellows A is moved by the support component (500) so as to quickly adjust the position of the bellows A. The test chamber (100) is equipped with two symmetrically arranged expansion components (300). The expansion components (300) seal both ends of the bellows A. The expansion components (300) are connected to a filling component for filling the bellows A with gas or liquid. The expansion component (300) includes a sealing tube (310), the end of which is provided with a conical head (309), the end of which is provided with a discharge port, and the tail of which is provided with a connection port for docking with the filling component. A receiving annular groove (311) is provided on the outer side of the sealing tube (310) near the conical head (309), and an expansion rubber ring (308) is provided at the location of the receiving annular groove (311). 10) A buffer ring box (305) is provided on the outside. The buffer ring box (305) is connected to the receiving ring groove (311) through multiple air guide channels (307). A vertical rod (306) is connected to the outside of the buffer ring box (305). An air passage is provided inside the vertical rod (306). The vertical rod (306) is connected to a feed drive component (400) for driving it to move closer to or away from the bellows A. The sealing tube (310) is also connected to a flip drive component for driving it to rotate. The feed drive component (400) includes two feed sliders (401), which are slidably mounted on a horizontal crossbar (406). Both ends of the horizontal crossbar (406) are fixedly connected to the inner wall of the test chamber (100). The lower end of each feed slider (401) is connected to a vertical suspension rod (306). Two threaded blocks (404) are provided between the two feed sliders (401), and the two threaded blocks (404) are threaded onto a threaded rod (405). One end of the threaded rod (405) is rotatably connected to the inner wall of the test chamber (100). 05) The other end is connected to a feed motor (411) for driving its rotation. The feed motor (411) is fixedly installed on the outside of the test box (100). Each threaded block (404) has a compression vertical plate (410) at its lower end. The threaded rod (405) has a threaded area that matches the two threaded blocks (404). The two threaded areas rotate in opposite directions. A limiting traction member is provided between the feed slider (401) and the threaded block (404). An inflation member is provided below the transverse crossbar (406) to inflate the expansion member (300) corresponding to the compression vertical plate (410). The inflation component includes a horizontally arranged piston cylinder (312). The outer side of the piston cylinder (312) is connected and fixed to the inner wall of the test box (100) through a positioning bracket rod (314). A piston plate (318) is slidably provided at both ends of the piston cylinder (312). The outer end of the piston plate (318) is connected to the piston rod. A positioning sleeve (313) is fixed at the end of the piston cylinder (312). The positioning sleeve (313) is provided with a through hole that slides with the piston rod. A piston push plate (316) is provided at the outer end of the piston rod. The piston push plate (316) and the positioning sleeve (313) are connected through a piston return spring (315). An exhaust pipe (317) is connected to the middle position of the lower side of the piston cylinder (312). The exhaust pipe (317) is connected to the vertical hanging rod (306) through a gas guide hose (319).

2. The PTFE corrugated pipe performance testing device according to claim 1, characterized in that, The flipping drive includes an adjusting bracket (304) fixedly connected to the vertical rod (306). An adjusting motor (302) is fixedly mounted on the adjusting bracket (304). An adjusting worm (303) is provided at the output end of the adjusting motor (302). The adjusting worm (303) is rotatably connected to the adjusting bracket (304). An adjusting worm wheel (301) is provided on the outside of the sealing tube (310). The adjusting worm wheel (301) meshes with the adjusting worm (303).

3. The PTFE corrugated pipe performance testing device according to claim 1, characterized in that, The limiting traction component includes a first traction block (407) disposed on the outside of the feed slider (401), a second traction block (409) disposed on the outside of the threaded block (404), the second traction block (409) and the first traction block (407) being connected by an elastic traction rope (408), the feed slider (401) being provided with an avoidance notch (402) to facilitate the threaded rod (405) to pass through, the transverse crossbar (406) being provided with a limiting stop (412) to limit the stroke of the feed slider (401), and a return spring (403) being provided between the limiting stop (412) and the feed slider (401).

4. The PTFE corrugated pipe performance testing device according to claim 1, characterized in that, The filling component includes a first pipe (201) rotatably disposed at the outer end of the sealing tube (310), a second pipe (202) slidably disposed at the end of the first pipe (201), a sealing ring being provided between the second pipe (202) and the first pipe (201), one of the second pipes (202) being connected to a feeding unit for feeding material into the bellows A, and the other second pipe (202) being connected to a receiving unit for recovering liquid or gas in the bellows A.

5. The performance testing device for polytetrafluoroethylene corrugated pipes according to claim 1, characterized in that, The supporting component (500) includes a horizontally arranged supporting plate (501), a guide is provided between the supporting plate (501) and the test box (100), a displacement push rod (505) is installed on the test box (100), the output end of the displacement push rod (505) is connected to the supporting plate (501) through a push connecting rod (506), and a fine-tuning support is provided at the upper end of the supporting plate (501) for fine-tuning the position of the bellows A.

6. The polytetrafluoroethylene corrugated pipe performance testing device according to claim 5, characterized in that, The fine-tuning support includes support slides (502) symmetrically arranged on the support plate (501). The support slides (502) and the support plate (501) are slidably arranged. A transmission screw hole is provided in the middle of the two support slides (502). A fine-tuning screw (509) is provided in the two transmission screw holes. The fine-tuning screw (509) is provided with a threaded area that matches the two support slides (502). The threads of the two threaded areas are opposite in direction. One end of the fine-tuning screw (509) is connected to the output end of the fine-tuning motor (508). The other end of the fine-tuning screw (509) is rotatably connected to the fixing block on the support plate (501). The fine-tuning motor (508) is fixedly connected to the upper end of the support plate (501). Multiple triangular support blocks (507) are provided on the upper end of the two support slides (502). The two rows of triangular support blocks (507) form a V-shaped support surface for supporting the corrugated pipe A.

7. The polytetrafluoroethylene corrugated pipe performance testing device according to claim 1, characterized in that, The transparent door assembly includes a sliding opening on the front of the test box (100), and a movable door (101) is slidably fitted at the sliding opening position. The movable door (101) is provided with an observation window (102) for easy observation. The observation window (102) is made of tempered glass.

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