Corrugation detection alarm device of corrugated pipe

Abstract

The invention discloses a corrugation detection alarm device for a corrugated pipe, which is characterized in that after gas or liquid is input into a sealed corrugated pipe, the corrugated pipe has downward pressure, and at the moment, an inclined supporting wheel in contact with the corrugated pipe moves in the downward inclined direction of a turning plate under the downward pressure; and the contact point of the supporting wheel and the corrugated pipe is in a continuous changing process, so that the corrugated pipe and the supporting wheel do not make complete contact with the sealed part, and the problem that gas or liquid in the corrugated pipe cannot be discharged when the completely-sealed contact part of the supporting wheel and the corrugated pipe is damaged is solved.

Description

Technical Field

[0001] The present application relates to the technical field of bellows detection, and in particular to a bellows detection alarm device. Background Art

[0002] After the bellows are manufactured, they need to be tested for size, damage, sealing, over-temperature and over-pressure to screen out bellows that do not meet the design requirements. Different tests require different testing devices. Taking the sealing test as an example, the test personnel need to seal both ends of the bellows, place them in a safe environment, and then input gas at a certain pressure (generally 1.1 to 1.2 times the design pressure). There is also a hydrostatic pressure test, which is similar to the air pressure test. One end of the pipe fitting needs to be closed and the other end connected to the pressure test pump. Then water is injected into the pipe fitting, and the pressure is gradually increased to the specified test pressure (generally about 1.5 times the design pressure of the pipe fitting), and maintained for a certain time (usually according to standard requirements, such as 10 to 30 minutes). During the test, observe whether the pipe fitting has leakage, rupture, etc.

[0003] In this detection method, the bellows will be placed directly on the ground or on a mounting frame. At this time, the contact part between the bellows and the ground or the mounting frame will be in a contact sealing state. If the contact part is damaged, the gas or liquid filled in the bellows cannot be effectively discharged from the contact part. This sealing state will result in the contact part being unable to obtain effective sealing detection. In addition, in actual working conditions, most of the gas or liquid contacted by the bellows is in a flowing state, and the impact force and pressure state are constantly changing. The existing static air pressure or hydraulic pressure detection cannot conduct effective experiments on the actual working conditions. Summary of the invention

[0004] The present application proposes a bellows detection alarm device for a bellows, which has a detection tube to provide a safe and multi-directional detection space, the airbag expands to seal the bellows, the bellows squeezes the support wheel group downward to move in an inclined downward direction, the T-bottom squeeze slider releases the force stored in spring II, spring II and spring III cooperate with the airbag to drive the support wheel group to move upward and backward, the moving support wheel group drives the bellows to move upward and rubs the corrugations on the outside of the bellows, the moving bellows affects the local air pressure inside to simulate the air pressure environment in actual operation, and the moving bellows has the advantage of reversely affecting the flap through the support wheel group, which is used to solve the problems of various existing detection devices, high cost, and the inability to effectively detect the bottoming position of the bellows.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a bellows detection alarm device for a bellows, comprising a detection cylinder providing a detection space, openings at both ends of the detection cylinder are sealed with sealing plates, a positioning column is provided on the side of the sealing plate facing the inner cavity of the detection cylinder, an air bag is provided on the positioning column, an inflation tube is connected to the air bag, which is used to inflate the air bag and seal the bellows, an air inlet pipe is provided on the sealing plate and passes through the positioning column, which is used to input high-pressure gas and liquid into the closed bellows; a mounting seat is provided at the bottom inner side of the detection cylinder, and evenly distributed reciprocating grooves are provided on the mounting seat, a supporting wheel group is movably sleeved in the reciprocating groove, which is used to support the bellows placed in the detection cylinder, and the supporting wheel group includes positioning frames symmetrical on both sides and roller groups arranged at the upper and lower ends of the positioning frame; an exhaust pipe is provided at the top of the detection cylinder, and a sensor is provided in the exhaust pipe.

[0006] Preferably, the positioning frame includes a T-shaped bottom at the bottom, a sleeve I connected to the top of the T-shaped bottom, a connecting rod connected to the top of the sleeve I, and a sleeve II connected to the top of the connecting rod, providing stable support for the roller group.

[0007] Preferably, the roller group at the bottom includes an axis rod I and two symmetrical rollers sleeved on the axis rod I, and the roller group at the top includes an axis rod II and two symmetrical support wheels sleeved on the axis rod II, which are used to contact the corrugated tube to provide supporting force, and the two ends of the axis rod I are respectively sleeved in two symmetrical sleeves I, and the two ends of the axis rod II are respectively sleeved in two symmetrical sleeves II, which are used to connect the positioning frame to maintain stability.

[0008] Preferably, a flap is provided in the reciprocating groove, and a hinged rod is provided at the center of the flap to connect with the two side walls of the reciprocating groove, so as to provide a support point for the fixed-point swing of the flap, and two symmetrical limit rods are provided below the flap to limit the downward swinging angle of the flap, and two symmetrical springs II are provided at the bottom end of the flap, and the two springs II are respectively close to one of the limit rods to provide a restoring force for the reverse deflection of the flap.

[0009] Preferably, four retraction holes symmetrical in pairs are provided on both side walls of the reciprocating groove, a slider is provided in the retraction hole, a spring I is provided between the slider and the bottom of the retraction hole, an arc surface is provided on the top of one end of the slider close to the hinged rod, for smoothly receiving the thrust when the side of the flap moves downward, an inclined surface is provided on the side of the slider close to the hinged rod away from the reciprocating groove, for cooperating with the arc surface to receive the thrust when the side of the flap moves downward, and receive the thrust in the forward direction of the T-bottom.

[0010] Preferably, the roller is placed at the top of the flap, and is used to contact the flap to provide supporting force. The bottom end of the T-bottom is higher than the bottom end of the roller, and is used to tilt the entire supporting wheel group. The side of the T-bottom facing the inclined surface is provided with an inclined edge opposite to the inclined surface, and is used to push the slider to retract into the retraction hole when moving forward. The bottom end length of the T-bottom is greater than the diameter of the roller, and is used for the roller to contact the slider in the forward direction first.

[0011] Preferably, a sleeve III is provided at the center of the axial rod I, a spring III is provided on one side of the sleeve III, and one end of the spring III away from the sleeve III is connected to the inner wall of the reciprocating groove to provide power to support the reset of the wheel set.

[0012] Preferably, a movable groove is provided on the side of the sealing plate facing the inner cavity of the detection tube, and a limit block movably sleeved in the movable groove is provided at one end of the positioning column close to the sealing plate. The length of the movable groove is greater than the length of the limit block, so as to provide space for the positioning column to move up and down.

[0013] The present application provides a bellows detection alarm device for a bellows. After gas or liquid is input into the sealed bellows, there will be downward pressure on the bellows. At this time, the inclined support wheel in contact with the bellows will move in the downward direction of the flap under the downward pressure, so that the contact point between the support wheel and the bellows is in a continuous changing process, so that the bellows and the support wheel are not in complete contact with the sealed part, avoiding the problem of gas or liquid in the bellows being unable to be discharged when the part where the support wheel and the bellows are in complete sealed contact is damaged.

[0014] At the same time, the T-bottom will move in the same direction as the supporting wheel, and the end of the T-bottom that is in the inclined downward direction will squeeze the inclined surface of the slider, causing the slider to retract into the retraction hole, thereby releasing the restriction on the upward deflection of this side of the flap. At this time, the energy-storing springs II on both sides will drive the flap to deflect around the hinged rod (the end that was originally in a low position deflects upward, and the end that was originally in a high position deflects downward). At the same time, the stretched spring III will provide a reset pulling force to the supporting wheel group, and cooperate with the force of spring II to move the supporting wheel group to reset. At this time, the flap will tilt downward to the other side that was originally inclined downward, causing the reset supporting wheel group to move to this side, and so on, causing the supporting wheel group to reciprocate, so that the supporting wheel is in rolling contact with the corrugation on the outer side of the bellows, causing the bellows to move up and down intermittently, causing the static gas or liquid in the bellows to flow, simulating the fluctuation state of gas or liquid under actual working conditions, so as to perform dynamic detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute a part of the specification, illustrate the embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0016] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the internal structure distribution of the present invention; Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram of the structure at center A; Figure 4 This is a schematic diagram of the structure of the support wheel assembly of the present invention; Figure 5 This is a schematic diagram of the structural position of the flap and support wheel assembly of the present invention; Figure 6 This is a schematic diagram of the structural position of the sealing plate and the positioning column of the present invention; Figure 7 This is a schematic diagram of the sealing plate structure of the present invention; Figure 8 This is a schematic diagram of the positioning column structure of the present invention; Fig. 9 It is a schematic diagram of the slider structure of the present invention.

[0017] Among them: 1. detection tube; 2. mounting seat; 201, retraction hole; 3. exhaust pipe; 4. sealing plate; 41. movable groove; 5. positioning column; 51, limit block; 6. air bag; 7. air intake pipe; 8. inflation pipe; 9. reciprocating groove; 10. limit rod; 11. slider; 111. arc surface; 112. inclined surface; 12. spring I; 13. hinged rod; 131. flap; 132. spring II; 14. T-bottom; 15. sleeve I; 16. connecting rod; 17. sleeve II; 18. axis rod I; 19. roller; 20. axis rod II; 21. support wheel; 22. sleeve III; 23. spring III. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] Embodiment 1 See also Figures 1 to 4A corrugation detection alarm device for a corrugated pipe comprises a detection tube 1, which is in the shape of a hollow cylinder. The corrugated pipe to be detected is placed in the detection tube 1 to provide a safe detection environment. The bottom end of the inner cavity of the detection tube 1 is fixedly connected with a mounting seat 2 in the axial direction. The mounting seat 2 is provided with evenly distributed reciprocating grooves 9 in the axial direction. A supporting wheel group is movably sleeved in the reciprocating groove 9. The corrugated pipe placed in the detection tube 1 is supported by the supporting wheel group so that the corrugated pipe is suspended in the detection tube 1.

[0020] See also Figures 2 to 5 The supporting wheel group includes a symmetrical positioning frame on both sides and a roller group movably sleeved on the upper and lower ends of the positioning frame. The positioning frame includes a T-bottom 14 at the bottom, a sleeve Ⅰ15 fixedly connected to the top of the T-bottom 14, a connecting rod 16 fixedly connected to the top of the sleeve Ⅰ15, and a sleeve Ⅱ17 fixedly connected to the top of the connecting rod 16. The positioning frames on both sides form supporting forces on both sides, and under the stability of the long sides on both sides of the T-bottom 14, the entire supporting wheel group is kept from tipping forward (in the axial direction of the detection tube 1). The roller group at the bottom includes an axial rod Ⅰ18 and a sleeve fixedly sleeved on the bottom of the T-bottom 14. There are two symmetrical rollers 19 on the shaft rod Ⅰ18, and the upper roller group includes a shaft rod Ⅱ20 and two symmetrical support wheels 21 fixedly sleeved on the shaft rod Ⅱ20. The two ends of the shaft rod Ⅰ18 are movably sleeved in two symmetrical sleeves Ⅰ15, and the two ends of the shaft rod Ⅱ20 are movably sleeved in two symmetrical sleeves Ⅱ17, so that the positioning frame supports and stabilizes the upper and lower roller groups, so that the roller 19 can rotate with the sleeve Ⅰ15 as the center through the shaft rod Ⅰ18, and the support wheel 21 can rotate with the sleeve Ⅱ17 as the center through the shaft rod Ⅱ20.

[0021] See also Figure 1 to Figure 2 , Figures 6 to 8, both ends of the detection tube 1 are fixedly connected with sealing plates 4 respectively, and the connection method of the sealing plate 4 and the detection tube 1 can be a fixing method that can be sealed and connected, such as bolt fixing or snap fixing. The detection tube 1 is sealed by the sealing plate 4 to maintain a safe detection environment in the detection tube 1 to prevent excessive influence of external air, temperature and other variables on the detection result. A movable groove 41 is provided on the side of the sealing plate 4 facing the inner cavity of the detection tube 1, and a limit block 51 is movably sleeved in the movable groove 41. A positioning column 5 is fixedly connected to the side of the limit block 51 facing the inner cavity of the detection tube 1, and an air bag 6 is fixedly sleeved on the outer side of the circumference of the positioning column 5. An air intake pipe 7 and an air charging pipe 8 are fixedly sleeved in the sealing plate 4. One end of the air intake pipe 7 passes through the sealing plate 4 to the outer side of the detection tube 1, and the other end passes through the limit block 51 and the positioning column 5 to be connected with the inner cavity of the detection tube 1, so that When inspecting the bellows, high-pressure gas, high-pressure liquid, low-temperature gas or high-temperature gas can be input into the sealed bellows through the air inlet pipe 7, so as to perform comprehensive inspection of the bellows from different directions through a detection device. One end of the inflation tube 8 passes through the sealing plate 4 to the outside of the detection tube 1, and the other end passes through the limit block 51 and the positioning column 5 to be connected with the airbag 6, so that the inflation tube 8 can input gas into the airbag 6 to expand the airbag 6. At this time, the outside of the airbag 6 will be squeezed on the inner wall of the bellows to be inspected, so that the two ends of the bellows are closed. At this time, the presence of the positioning column 5 supports the bellows to remain at a certain height in the detection tube 1, but the bellows still has a downward tendency under its own weight due to the flexibly fixed two ends. In particular, the downward movement tendency is stronger in the middle of the bellows away from the flexibly fixed position at the two ends.

[0022] See also Figure 1 to Figure 2 The top of the detection tube 1 is fixedly connected to the exhaust pipe 3, and a sensor is fixedly sleeved in the exhaust pipe 3. The type of the sensor can be changed according to the actual detection direction. For example, when detecting damage, it can be changed to an airflow sensor, and when detecting temperature, it can be changed to a temperature sensor. Taking the damage of the bellows as an example, when high-pressure gas is input into the bellows, leakage will occur, causing the air pressure in the detection tube 1 to increase. At this time, the sensor in the exhaust pipe 3 will upload the sensed air pressure change to the detection program, and a real-time alarm will be issued when it exceeds the set value.

[0023] Embodiment 2 See also Figures 2 to 5On the basis of the first embodiment, in the axial direction of the detection tube 1, two symmetrical limit rods 10 are fixedly connected to the bottom of the inner side of the reciprocating groove 9, and a flap 131 is arranged above the limit rod 10. The spacing between the limit rod 10 and the horizontal flap 131 is not greater than ten centimeters, so that the two sides of the flap 131 can always be restricted by the limit rod 10 when deflecting downward, and will no longer deflect after forming a certain inclination angle. The inclined flap 131 will provide an inclined surface to the upper support wheel group, causing the entire support wheel group to tilt. However, at this time, the downwardly inclined side of the bottom of the T-bottom 14 will contact the flap 131 to control the inclination angle of the support wheel group. The center of 131 is fixedly sleeved with a hinge rod 13, and the two ends of the hinge rod 13 are movably sleeved in the two side walls of the reciprocating groove 9, so that the flap 131 can rotate with the hinge rod 13 as the center under the action of external force. The hinge rod 13 is perpendicular to the axis of the detection tube 1. The bottom end of the flap 131 is fixedly connected with two symmetrical springs II132, and the two springs II132 are respectively close to one of the limit rods 10, so that when the flap 131 tilts to one side under the action of external force, the spring II132 on the same side will be compressed and stored, while the spring II132 on the other side will be stretched and stored. When the flap 131 needs to be reset, the two springs II132 will provide the power for resetting.

[0024] See also Figures 4 to 5 , Fig. 9Four retraction holes 201 symmetrical in pairs are provided on the two side walls in the width direction of the reciprocating groove 9, a slider 11 is movably sleeved in the retraction hole 201, a spring Ⅰ12 is provided between the slider 11 and the bottom of the retraction hole 201, one end of the spring Ⅰ12 is fixedly connected to the bottom of the retraction hole 201, and the other end is fixedly connected to the end of the slider 11 facing the bottom of the retraction hole 201, so that the slider 11 can reciprocate in the retraction hole 201, the end of the slider 11 away from the spring Ⅰ12 penetrates into the reciprocating groove 9, and is close to the side of the flap 131 away from the hinged rod 13, an arc surface 111 is provided on the top of the end of the slider 11 close to the hinged rod 13, and an inclined surface 112 is provided on the side of the end of the slider 11 away from the reciprocating groove 9 close to the hinged rod 13. Before detection, an external force is applied to one side of the flap 131, so that the flap 131 deflects downward to this side, and the flap 13 The side edge of this side will contact the arc surface 111 and the inclined surface 112 downward, so that the slider 11 is forced to retract into the retraction hole 201, compressing the spring I12, and then the flap 131 will reach the bottom of the slider 11 and abut against the limit rod 10. At this time, the slider 11 is reset under the drive of the spring I12 and is located above the side of the flap 131, preventing the flap 131 from lifting up. At this time, the external force is removed, so that the flap 131 remains stable, and the spring II132 below this side is compressed to store energy, and the spring II132 below the other side is stretched to store energy. At this time, the support wheel group above the flap 131 is tilted synchronously due to the tilt of the flap 131, until the end of the T-bottom 14 tilted downward contacts the flap 131. Under the action of gravity, the support wheel group will move a distance in the tilted downward direction, stretching the spring III23 until the spring III23 is equal to the component force of the tilt of the support wheel group.

[0025] See also Figures 3 to 5The roller 19 is placed on the top of the flap 131, and the bottom of the T-bottom 14 is higher than the bottom of the roller 19. The T-bottom 14 is in an inverted T shape, so that when the flap 131 is tilted, the upper support wheel group is tilted synchronously due to the tilt of the flap 131, until the end of the T-bottom 14 tilted downward contacts the flap 131. Under the action of gravity, the support wheel group will move a distance in the tilted downward direction, stretching the spring III 23 until the spring III 23 is equal to the tilt component of the support wheel group. The side of the T-bottom 14 facing the inclined surface 112 is provided with a support member opposite to the inclined surface 112. The length of the bottom end of the T-bottom 14 is greater than the diameter of the roller 19, and the side of the T-bottom 14 fits the side wall of the reciprocating groove 9, so that after the bellows is placed in the detection tube 1, the support wheel 21 will contact the bellows. At this time, the downward force of the bellows is pressed on the support wheel 21, especially after the high-pressure gas or liquid is continuously input into the bellows, the downward force of the bellows will increase, and the support wheel 21 will transmit the force to the entire support wheel group, so that the roller 19 moves to the side that is inclined downward. At this time, the spring III 23 is quickly stretched, and the bellows will also move downward, and the airbag 6 will also be compressed downward, so that The end of the T-bottom 14 tilted downward first contacts the inclined surface 112, squeezing the slider 11 back into the retraction hole 201. At this time, the flap 131 loses the upward restriction of the slider 11, and the two energy-storing springs II 132 will drive the flap 131 to reverse, pushing the entire support wheel group to move upward, and cooperate with the stretched spring III 23 to pull the support wheel group backward (the opposite direction of the original movement direction), so that the support wheel group cooperates with the compressed airbag 6 to transmit the upward force to the bellows, driving the bellows to lift up. At the same time, the reciprocating motion of the support wheel group in the axial direction of the detection tube 1 will also be driven by the support wheel dial. The corrugations on the outside of the dynamic bellows cause the entire bellows to move up and down, and cooperate with the corrugations inside the bellows to affect the local air pressure inside the bellows, simulating the unstable air pressure under actual working conditions and improving the detection effect. It should be noted that when the bellows moves up and down, the force of the up and down movement will also be transmitted to the support wheel 21, so that the support wheel group transmits the force to the flap 131 below, so that the flap 131 is in a swinging state. When the flap 131 squeezes the slider 11 on one side again during the swinging process and is restricted from moving, the above action will be repeated again until the energy is exhausted.

[0026] See also Figures 2 to 3 The center of the axial rod Ⅰ18 is movably sleeved with a sleeve Ⅲ22, one side of the sleeve Ⅲ22 is fixedly connected with a spring Ⅲ23, and one end of the spring Ⅲ23 away from the sleeve Ⅲ22 is fixedly connected to the inner wall of the reciprocating groove 9.

[0027] See also Figures 6 to 8The cross-sections of the movable groove 41 and the limit block 51 are both T-shaped with the same size. The length of the movable groove 41 is greater than the length of the limit block 51, so that the positioning column 5 can control the up and down movement of the bellows under the restriction of the limit block 51, so that the bellows will not separate from the supporting wheel group. The air intake pipe 7 and the inflation pipe 8 are both hoses, so that when the positioning column 5 moves, the air intake pipe 7 and the inflation pipe 8 can still carry out airflow transportation.

Claims

1. A corrugation detection alarm device for a corrugated pipe, characterized in that: The invention comprises a detection cylinder (1) providing a detection space, the two end openings of the detection cylinder (1) being sealed with sealing plates (4), a positioning column (5) being arranged on a side of the sealing plate (4) facing the inner cavity of the detection cylinder (1), an air bag (6) being arranged on the positioning column (5), an inflation tube (8) being connected to the air bag (6) for inflating the air bag (6) and sealing the bellows, an air inlet tube (7) being arranged on the sealing plate (4) and penetrating the positioning column (5) for inputting high-pressure gas and liquid into the sealed bellows; A mounting seat (2) is provided at the bottom inner side of the detection cylinder (1), and the mounting seat (2) is provided with evenly distributed reciprocating grooves (9). A supporting wheel group is movably sleeved in the reciprocating groove (9) for supporting the corrugated tube placed in the detection cylinder (1), and the supporting wheel group comprises a positioning frame symmetrical on both sides in the transverse direction and a roller group arranged at the upper and lower ends of the positioning frame; An exhaust pipe (3) is arranged at the top end of the detection cylinder (1), and a sensor is arranged inside the exhaust pipe (3).

2. A corrugation detection alarm device for a corrugated pipe according to claim 1, characterized in that: The positioning frame comprises a T-shaped bottom (14) at the bottom, a sleeve I (15) connected to the top of the T-shaped bottom (14), a connecting rod (16) connected to the top of the sleeve I (15), and a sleeve II (17) connected to the top of the connecting rod (16), providing stable support for the roller assembly.

3. A corrugation detection alarm device for a corrugated pipe according to claim 2, characterized in that: The roller assembly at the bottom includes an axial rod I (18) and two symmetrical rollers (19) sleeved on the axial rod I (18), and the roller assembly at the top includes an axial rod II (20) and two symmetrical support wheels (21) sleeved on the axial rod II (20), which are used to contact the corrugated tube to provide supporting force. The two ends of the axial rod I (18) are respectively sleeved in two symmetrical sleeves I (15), and the two ends of the axial rod II (20) are respectively sleeved in two symmetrical sleeves II (17), which are used to connect the positioning frame to maintain stability.

4. A corrugation detection alarm device for a corrugated pipe according to claim 3, characterized in that: A flap (131) is arranged in the reciprocating groove (9), and a hinged rod (13) is arranged at the center of the flap (131) and connected to the two side walls of the reciprocating groove (9) to provide a support point for the fixed-point swing of the flap (131). Two symmetrical limit rods (10) are arranged below the flap (131) to limit the downward swing angle of the flap (131), and two symmetrical springs II (132) are arranged at the bottom end of the flap (131). The two springs II (132) are respectively close to one of the limit rods (10) to provide a restoring force for the reverse deflection of the flap (131).

5. The corrugation detection alarm device for a corrugated pipe according to claim 4, characterized in that: Four retraction holes (201) are provided on the two side walls of the reciprocating groove (9) and are symmetrical with each other. A slider (11) is provided in the retraction hole (201). A spring I (12) is provided between the slider (11) and the bottom of the retraction hole (201). An arc surface (111) is provided on the top of one end of the slider (11) close to the hinge rod (13) for smoothly receiving the thrust when the flap (131) moves downward sideways. An inclined surface (112) is provided on one side of the slider (11) away from the reciprocating groove (9) and close to the hinge rod (13) for cooperating with the arc surface (111) to receive the thrust when the flap (131) moves downward sideways and receives the thrust in the forward direction of the T-bottom (14).

6. A corrugation detection alarm device for a corrugated pipe according to claim 5, characterized in that: The roller (19) is placed on the top of the flap (131) and is used to contact the flap (131) to provide a supporting force. The bottom end of the T-bottom (14) is higher than the bottom end of the roller (19) and is used to tilt the entire supporting wheel assembly. The side of the T-bottom (14) facing the inclined surface (112) is provided with an inclined edge opposite to the inclined surface (112) and is used to push the slider (11) to retract into the retraction hole (201) when moving forward. The bottom end length of the T-bottom (14) is greater than the diameter of the roller (19) and is used to allow the roller (19) to contact the slider (11) in the forward direction.

7. A corrugation detection alarm device for a corrugated pipe according to claim 6, characterized in that: A sleeve III (22) is arranged at the center of the axial rod I (18), a spring III (23) is arranged on one side of the sleeve III (22), and one end of the spring III (23) away from the sleeve III (22) is connected to the inner wall of the reciprocating groove (9) for providing power to support the reset of the wheel assembly.

8. The corrugation detection alarm device for a corrugated pipe according to claim 1, characterized in that: A movable groove (41) is provided on a side of the sealing plate (4) facing the inner cavity of the detection tube (1); a limit block (51) movably sleeved in the movable groove (41) is provided on one end of the positioning column (5) close to the sealing plate (4); the length of the movable groove (41) is greater than the length of the limit block (51), and is used to provide space for the positioning column (5) to move up and down.

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