A pipeline air leakage detection device and detection method

Abstract

The present invention discloses a pipeline leakage detection device and a detection method, which belong to the technical field of pipeline leakage detection devices, wherein the pipeline leakage detection device comprises two symmetrically arranged support rings, a plurality of guide columns are distributed on the support rings, a guide cover is arranged inside the support rings, one end of the guide column extends into the guide cover and is connected with the guide cover, and the end of the guide column away from the guide cover is provided with a support platform for supporting the pipe fitting; when the guide column carrying the pipe fitting without leakage passes through the second rack, the meshing of the second rack and the bevel gear makes this guide column also in an open state, so that the guide column carrying the new pipe fitting can be connected with the guide column carrying the pipe fitting without leakage through the guide cover, so that the gas in the pipe fitting without leakage can enter the new pipe fitting through the guide cover, so as to reduce the gas delivery of the air pump and save more energy.

Description

Technical Field

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

[0002] Existing pipeline air leakage detection devices still have some defects. Most of them, when detecting, put the pipeline into water, inflate the pipeline, and observe whether there are bubbles on the pipeline surface. This method is time-consuming and laborious.

[0003] Chinese Patent CN217980707U discloses a pipeline air leakage detection device. Through the provided first air pressure sensor, the detection of the top of the pipeline is realized. Through the provided alarm, the alarm function of the device is realized, which strengthens the performance of the device and provides convenience for users.

[0004] The above device injects gas into the pipe fitting and uses structures such as sensors to detect whether the pipe fitting leaks air. However, when the detection is over, the gas in the pipe fitting will be discharged. When detecting the next pipe fitting, it is necessary to re-inject gas into the pipe fitting, which causes a certain degree of energy waste. In summary, the above device still has room for improvement.

[0005] Therefore, it is necessary to provide a pipeline air leakage detection device and a detection method to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a pipeline air leakage detection device and a detection method to solve the problem that the existing device injects gas into the pipe fitting and uses structures such as sensors to detect whether the pipe fitting leaks air. However, when the detection is over, the gas in the pipe fitting will be discharged. When detecting the next pipe fitting, it is necessary to re-inject gas into the pipe fitting, which causes a certain degree of energy waste as mentioned in the above background art.

[0007] Based on the above idea, the present invention provides the following technical solution: A pipeline air leakage detection device includes two symmetrically arranged support rings. A plurality of flow guiding columns are distributed on the support rings. A flow guiding cover is arranged inside the support rings. One end of the flow guiding column extends into the flow guiding cover and is communicated with the flow guiding cover. A support platform for supporting the pipe fitting is arranged at the end of the flow guiding column away from the flow guiding cover. A pressing plate is arranged outside the support platform and is communicated with the flow guiding column. A convex ring is integrally formed on the end face of the flow guiding column located inside the flow guiding cover. A second turntable is fixedly installed inside the convex ring. A first turntable is rotatably installed in the flow guiding column. Through slots are opened on both the first turntable and the second turntable.

[0008] A driving component is provided at one end of the flow guiding column away from the flow guiding cover. A side plate is provided on the outer side of the support ring. A second rack is slidably installed on the inner side surface of the side plate. A first rack is provided on one side of the second rack, and the first rack is fixedly connected to the side plate. The position of the driving component can be adjusted according to the air pressure in the pipe fitting, so that the driving components on the two flow guiding columns can be respectively engaged with the first rack and the second rack at the same time, so that one ends of the two flow guiding columns located inside the flow guiding cover are both in an open state.

[0009] As a further scheme of the present invention: the driving component includes a connecting shaft provided at the end of the flow guiding column. One end of the connecting shaft passes through the flow guiding column, and a bevel gear is fixedly sleeved on the end of the connecting shaft passing through the flow guiding column. A sealing block is sleeved on the end of the connecting shaft extending into the flow guiding column. The sealing block is elastically connected to the inside of the flow guiding column and is in sealing cooperation with the flow guiding column. The connecting shaft and the first turntable are connected by a cross bar, and the cross bar can slide relative to the connecting shaft.

[0010] As a further scheme of the present invention: the side plate is provided with an arc-shaped groove at the position of the second rack. A positioning block is fixedly provided on the second rack. The positioning block is elastically arranged in the arc-shaped groove. A clamping block is elastically connected to the bottom wall of the inner cavity of the arc-shaped groove. A clamping groove matched with the clamping block is provided on the bottom surface of the positioning block. A traction block is elastically connected to the inner wall of the side plate. A pull rope is fixedly arranged between the traction block and the clamping block. An L-shaped traction plate is sleeved on the outer side of the connecting shaft. A magnet is fixedly embedded on the surface of the traction plate close to the side plate. The traction block is made of iron. During the rotation of the flow guiding column, the traction plate can be attached to the inner side surface of the side plate.

[0011] As a further scheme of the present invention: one end of the connecting shaft passing through the bevel gear is connected with a pull rod. The cross section of the pull rod is set as a T shape. A strip-shaped groove is provided on the surface of the second rack away from the side plate. When the bevel gear is engaged with the second rack, the end of the pull rod away from the flow guiding column can be located in the strip-shaped groove.

[0012] As a further scheme of the present invention: a pressure gauge is installed on the flow guiding column.

[0013] As a further scheme of the present invention: a through groove slidably matched with the positioning block is provided on the side plate. A connecting rod is fixedly installed in the through groove. The connecting rod passes through the positioning block and is slidably matched with the positioning block.

[0014] As a further scheme of the present invention: a flow guiding channel is arranged inside the pressing plate. One end of the flow guiding channel is communicated with the flow guiding column, and the other end of the flow guiding channel extends to the inner side surface of the pressing plate.

[0015] As a further scheme of the present invention: a spring is provided on the side of the sealing block close to the bevel gear. The spring is sleeved on the outer side of the connecting shaft.

[0016] As a further solution of the present invention: both the first rack and the second rack are arranged in an arc shape.

[0017] A method for detecting using the above-mentioned pipeline air leakage detection device includes the following steps: placing the pipe fittings to be detected on two support platforms on the same horizontal plane, and fixing the pipe fittings between the two support platforms through a pressing plate; judging whether the pipe fittings are air-leaking according to the reading of the pressure gauge; driving a plurality of groups of flow guiding columns to rotate through a support ring, and enabling different groups of flow guiding columns to be communicated through a flow guiding cover by the engagement of the first rack and the second rack with the bevel gears at the ends of different groups of flow guiding columns.

[0018] Compared with the prior art, the beneficial effect of the present invention is that: by arranging the first rack, when the flow guiding column carrying the un-inflated pipe fitting passes through the first rack, the bevel gear on this flow guiding column can be engaged with the first rack, so that this flow guiding column is in an open state. And during this process, the second rack releases the locking with the side plate and moves away from the support ring. When the flow guiding column carrying the non-air-leaking pipe fitting passes through the second rack, this flow guiding column is also in an open state through the engagement of the second rack and the bevel gear. Thus, the flow guiding column carrying the new pipe fitting and the flow guiding column carrying the non-air-leaking pipe fitting can be communicated through the flow guiding cover, so that the gas in the non-air-leaking pipe fitting can enter the new pipe fitting through the flow guiding cover, thereby reducing the air delivery volume of the air pump and being more energy-saving. Description of the Drawings

[0019] The present invention will be further described below in conjunction with the drawings and embodiments:

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the connection structural schematic diagram of the flow guiding column, the flow guiding cover and the support ring of the present invention;

[0022] Figure 3 is the front view of the present invention;

[0023] Figure 4 is the cooperation schematic diagram of the pull rod and the strip-shaped groove of the present invention;

[0024] Figure 5 is the structural schematic diagram of the driving rod of the present invention;

[0025] Figure 6 is the cross-sectional view of the flow guiding column of the present invention;

[0026] Figure 7 is the structural schematic diagram of the pull rope of the present invention;

[0027] Figure 8 is the present invention Figure 6Schematic diagram of the enlarged structure at position B;

[0028] Figure 9 is the notch distribution diagram of the present invention;

[0029] Figure 10 is the present invention Figure 1 Schematic diagram of the enlarged structure at position A;

[0030] Figure 11 is the schematic diagram of the pressing plate structure of the present invention;

[0031] Figure 12 is the present invention Figure 6 Schematic diagram of the enlarged structure at position C.

[0032] In the figure: 1, side plate; 101, connecting rod; 2, traction block; 3, first rack; 4, second rack; 401, strip groove; 402, positioning block; 5, pull rod; 6, bevel gear; 7, pressing plate; 701, diversion channel; 8, pipe fitting; 9, support ring; 10, diversion cover; 11, pressure gauge; 12, air inlet pipe; 13, support platform; 14, connecting pipe; 15, diversion column; 1501, convex ring; 1502, connecting plate; 16, handle; 17, guide rod; 18, drive rod; 19, connecting shaft; 1901, annular plate; 20, sealing block; 21, cross bar; 22, pull rope; 23, clamping block; 24, pressing disc; 25, first turntable; 2501, limit block; 26, second turntable; 27, traction plate; 28, notch; 29, diversion pipe; 30, metal hose. Specific embodiments

[0033] As Figures 1 - 12 shown, a pipeline air leakage detection device and detection method include two symmetrically arranged support rings 9. A plurality of diversion columns 15 are arranged in a circular array on the support ring 9. The diversion columns 15 penetrate through the support ring 9 and are fixedly connected thereto. Combining Figures 1 - 2 shown, a diversion cover 10 is arranged inside the support ring 9, and the diversion cover 10 is coaxially arranged with the support ring 9. The diversion cover 10 is of a ring structure and both ends are in a closed state. One end of the above-mentioned diversion column 15 extends into the diversion cover 10 and is fixedly connected to the diversion cover 10. Through this structure, when gas is injected into the diversion cover 10, the gas can be dispersed into a plurality of diversion columns 15 through the diversion cover 10;

[0034] A support platform 13 for supporting the pipe fitting 8 is arranged at the end of the diversion column 15 far from the diversion cover 10. Referring to Figure 2 shown, the support platform 13 is fixedly arranged on the upper surface of the diversion column 15, and the top of the support platform 13 is set as an arc surface that fits the pipe fitting 8, which is beneficial to stably place the pipe fitting 8.

[0035] Furthermore, a pressing plate 7 for blocking the pipe fitting 8 is arranged outside the supporting platform 13. The pressing plate 7 is electrically connected to the diversion column 15 through a metal hose 30, so that the gas inside the diversion cover 10 can be introduced into the pipe fitting 8;

[0036] Combined with Figures 2 - 9 As shown, a convex ring 1501 is integrally formed on the end face of one end of the diversion column 15 located inside the diversion cover 10, and a second turntable 26 is fixedly installed inside the convex ring 1501. Refer to Figures 8 - 9 As shown, a first turntable 25 is rotatably installed inside the diversion column 15. The first turntable 25 is in contact with the second turntable 26, and through holes 28 are formed in both the first turntable 25 and the second turntable 26. The through holes 28 can be arc-shaped. When the through holes 28 on the first turntable 25 and the second turntable 26 are aligned, the gas inside the diversion cover 10 can enter the diversion column 15. On the contrary, when the through holes 28 on the first turntable 25 and the second turntable 26 are staggered, one end of the diversion column 15 located inside the diversion cover 10 is in a blocked state;

[0037] A driving assembly for driving the first turntable 25 to rotate is arranged at one end of the diversion column 15 away from the diversion cover 10. A side plate 1 is arranged outside the support ring 9. A second rack 4 is slidably installed on the inner side surface of the side plate 1. A first rack 3 is arranged on one side of the second rack 4. The first rack 3 is fixedly connected to the side plate 1. The first rack 3 is longer than the second rack 4. Both the first rack 3 and the second rack 4 are arc-shaped, that is, both the first rack 3 and the second rack 4 can be regarded as a section intercepted from a bevel gear ring. Both the first rack 3 and the second rack 4 can cooperate with the driving assembly. In actual use, when a worker removes the pipe fitting 8 from one diversion column 15 and installs the pipe fitting 8 to be detected, during the rotation of this diversion column 15, the driving assembly at its end can be engaged with the first rack 3, so that one end of this diversion column 15 located inside the diversion cover 10 is in an open state. When another diversion column 15 rotates and passes through the second rack 4, the driving assembly on this diversion column 15 can be engaged with the second rack 4, so that the high-pressure gas inside the pipe fitting 8 can flow through the diversion cover 10 to the pipe fitting 8 to be detected, which is beneficial to making full use of the gas inside the pipe fitting 8.

[0038] The driving assembly includes a connecting shaft 19 arranged at the end of the diversion column 15. Refer to Figure 6 As shown, the connecting shaft 19 passes through the diversion column 15 and can move relative to the diversion column 15. A bevel gear 6 is fixedly sleeved on one end of the connecting shaft 19 away from the diversion column 15;

[0039] Combined with Figures 6 - 8As shown, at one end where the connecting shaft 19 extends into the inside of the diversion column 15, a sealing block 20 is rotatably sleeved. The sealing block 20 is elastically connected inside the diversion column 15 and is in sealing cooperation with the diversion column 15. Specifically, a through-round hole can be opened at the center of the sealing block 20 so that the connecting shaft 19 passes through the round hole. An annular groove is opened on the inner wall of the round hole. An annular plate 1901 is fixedly sleeved on the outer side of the connecting shaft 19. The annular plate 1901 rotates in the annular groove and is in sealing cooperation with the annular groove. A cross bar 21 is arranged between the connecting shaft 19 and the first turntable 25. One end of the cross bar 21 is fixedly connected to the first turntable 25. The other end of the cross bar 21 extends into the connecting shaft 19 and is in sliding cooperation with it. The cross section of the cross bar 21 is rectangular, so that the connecting shaft 19 can drive the first turntable 25 to rotate synchronously through the cross bar 21. When injecting gas into the pipe fitting 8 through the flow guide cover 10 for detection, the sealing block 20 will drive the connecting shaft 19 and the bevel gear 6 to move outward under the influence of air pressure, so that the bevel gear 6 can be engaged with the second rack 4 during the rotation of the diversion column 15. When the staff removes the tested pipe fitting 8 and places the pipe fitting 8 to be detected, since no gas is injected into the pipe fitting 8, the gas pressure in the pipe fitting 8 and the diversion column 15 is relatively low. At this time, the bevel gear 6 on the connecting shaft 19 is at a position close to the end of the diversion column 15, so that the bevel gear 6 can be engaged with the first rack 3 during the rotation of the diversion column 15.

[0040] An arc-shaped groove is opened on the side plate 1 at the position of the second rack 4, and a positioning block 402 is fixedly arranged on the second rack 4. The positioning block 402 is elastically arranged in the arc-shaped groove. A clamping block 23 is elastically connected to the bottom wall of the inner cavity of the arc-shaped groove, and a clamping groove matching with the clamping block 23 is opened on the bottom surface of the positioning block 402. In the initial state, one end of the clamping block 23 is inserted into the clamping groove to lock the second rack 4, so that during the rotation of the diversion column 15, the bevel gear 6 at the end of the diversion column 15 will pass by the outside of the second rack 4. Through this structure, during the detection process, the bevel gear 6 and the second rack 4 will not contact. A chamfer is arranged on the side of the positioning block 402 close to the clamping block 23. By arranging the chamfer, interference between the positioning block 402 and the clamping block 23 during the movement of the positioning block 402 can be avoided;

[0041] Further, a traction block 2 is elastically connected to the inner wall of the side plate 1. A pull rope 22 is fixedly arranged between the traction block 2 and the clamping block 23. The pull rope 22 passes through the side plate 1 and is in sliding cooperation with it. Combined Figure 2 、 Figure 6 and Figure 10As shown, an L-shaped traction plate 27 is sleeved outside the connecting shaft 19. Specifically, the connecting shaft 19 passes through the traction plate 27 and is rotationally matched with it. The traction plate 27 is slidably arranged on one side of the diversion column 15. A magnet is fixedly embedded on the side of the traction plate 27 close to the side plate 1. The above-mentioned traction block 2 is made of iron. During the rotation of the diversion column 15, the traction plate 27 can contact the inner side surface of the side plate 1. When the bevel gear 6 starts to mesh with the first rack 3, the traction plate 27 can coincide with the traction block 2.

[0042] One end of the connecting shaft 19 passing through the bevel gear 6 is connected with a pull rod 5. The cross-section of the pull rod 5 is set as a T shape. During specific installation, the pull rod 5 can be rotationally or fixedly matched with the connecting shaft 19. A strip-shaped groove 401 is opened on the side of the second rack 4 away from the side plate 1. Both ends of the strip-shaped groove 401 extend to the end faces at both ends of the second rack 4. When the bevel gear 6 meshes with the second rack 4, the end of the pull rod 5 away from the diversion column 15 can be located in the strip-shaped groove 401. Through this structure, when the connecting shaft 19 slides relative to the diversion column 15, the cooperation between the pull rod 5 and the strip-shaped groove 401 can drive the second rack 4 to move. When the bevel gear 6 meshes with the first rack 3, the pull rod 5 can be located outside the first rack 3, thus avoiding interference between the pull rod 5 and the first rack 3.

[0043] During actual use, the staff places the pipe fitting 8 to be detected on the support table 13, referring to Figures 1 - 2 As shown, both ends of the pipe fitting 8 are blocked by the pressing plate 7. In the initial state, no gas is filled inside the pipe fitting 8. Therefore, the bevel gear 6 is located at a position close to the diversion column 15;

[0044] When driving multiple diversion columns 15 to rotate through the support ring 9, the bevel gear 6 at the end of the diversion column 15 can mesh with the first rack 3. The meshing of the first rack 3 and the bevel gear 6 can drive the connecting shaft 19 and the cross bar 21 to rotate. The cross bar 21 can drive the first turntable 25 to rotate. When the notch 28 on the first turntable 25 aligns with the notch on the second turntable 26, the gas inside the diversion cover 10 can enter the diversion column 15. During this process, gas is injected into the diversion cover 10 through an external air pump. The gas passes through the diversion column 15 and the metal hose 30 and is introduced into the pipe fitting 8, thereby increasing the air pressure inside the pipe fitting 8. After all the pipe fittings 8 are placed, the staff can push the second rack 4 to move relative to the side plate 1 and lock the second rack 4 through the cooperation between the clamping block 23 and the clamping groove, avoiding interference between the bevel gear 6 and the second rack 4 during the rotation of the diversion column 15;

[0045] During actual operation, a pressure gauge 11 can be installed on the guide column 15 to determine whether the pipe fitting 8 is leaking by detecting the air pressure in the guide column 15. When the support ring 9 drives multiple guide columns 15 to rotate, the staff can check the pressure gauges 11 on each guide column 15 in turn. When it is found that the pipe fitting 8 on a certain guide column 15 is leaking, the staff can remove the pipe fitting 8 and install the pipe fitting 8 to be detected on this guide column 15. Since the internal air pressure of the newly installed pipe fitting 8 is lower, the connecting shaft 19 and the bevel gear 6 can move toward the direction close to the guide column 15, so that the bevel gear 6 at the end of this guide column 15 can engage with the first rack 3. In the process of the bevel gear 6 engaging with the first rack 3, the bevel gear 6 can drive the connecting shaft 19 and the cross bar 21 to rotate, and then drive the first turntable 25 to rotate. When the notches 28 on the first turntable 25 and the second turntable 26 are aligned, the end of the guide column 15 located inside the deflector 10 is in a state of being opened. When the bevel gear 6 is meshed with the first rack 3, the traction plate 27 can overlap with the traction block 2, and the magnet can pull the pull rope 22 to move one end of the card block 23 out of the card slot, so that the second rack 4 can move away from the support ring 9. At the same time, when the guide column 15 carrying the non-leaking pipe 8 rotates to the second rack 4, the bevel gear 6 on the guide column 15 can mesh with the second rack 4. According to the above description It can be seen that when the guide column 15 passes through the second rack 4, one end of the guide column 15 located in the guide cover 10 can also be opened. At this point, the guide column 15 carrying the new pipe 8 and the guide column 15 carrying the pipe 8 without leakage are both in a state of being connected to the guide cover 10, so that the gas in the pipe 8 without leakage can be introduced into the new pipe 8 through the guide cover 10, so as to increase the pressure inside the new pipe 8. The purpose of this is to fully utilize the gas in the pipe 8;

[0046] During the meshing process of the bevel gear 6 and the second rack 4, the pull rod 5 is in the strip groove 401. As the gas inside the non-leaking pipe 8 gradually decreases, the bevel gear 6 can move toward the direction close to the support ring 9. In this process, the second rack 4 can be pulled by the cooperation of the pull rod 5 and the strip groove 401. When the block 23 is aligned with the slot, the second rack 4 can be locked by the cooperation of the block 23 and the slot to prevent the bevel gears 6 on the other guide columns 15 from meshing with the second rack 4. In addition, when the guide column 15 carrying the non-leaking pipe 8 completely passes through the second After the rack 4, the first rotating disk 25 at the guide column 15 and the notch 28 on the second rotating disk 26 are in a staggered state, so that the end of the guide column 15 placed inside the guide cover 10 is in a closed state, and then the air pump can continue to introduce gas into the guide cover 10, and the gas can enter the new pipe 8 through the guide cover 10, so that the air pressure inside the new pipe 8 reaches the set value. When the guide column 15 carrying the new pipe 8 completely passes through the first rack 3, the first rotating disk 25 at the guide column 15 and the notch 28 on the second rotating disk 26 are also in a staggered state;

[0047] To sum up, this device is provided with a first rack 3, so that when the guide column 15 carrying the uninflated pipe 8 passes through the first rack 3, the bevel gear 6 on the guide column 15 can engage with the first rack 3, so that the guide column 15 is in an open state, and, in this process, the second rack 4 is released from the lock with the side plate 1 and moves away from the support ring 9, and when the guide column 15 carrying the non-leaking pipe 8 passes through the second rack 4, the meshing of the second rack 4 with the bevel gear 6 makes this guide column 15 also in an open state. At this point, the guide column 15 carrying the new pipe 8 and the guide column 15 carrying the non-leaking pipe 8 can be connected through the guide cover 10, so that the gas in the non-leaking pipe 8 can enter the new pipe 8 through the guide cover 10, thereby reducing the gas output of the air pump and saving more energy.

[0048] like Figures 1 - 10 As shown, a connecting pipe 14 is fixedly installed between the two air deflectors 10, and the two air deflectors 10 can be connected by the connecting pipe 14, and a guide pipe 29 is fixedly installed on the outer side of the air deflector 10, and the guide pipe 29 is connected to the air deflector 10. A vertical plate is fixedly connected to the top of the side plate 1, and the guide pipe 29 passes through the vertical plate and rotates therewith. The end of the guide pipe 29 away from the air deflector 10 is connected to the air intake pipe 12, and the air intake pipe 12 is sealed with the guide pipe 29. In actual use, it is possible to consider using structures such as sealed bearings to achieve the coordination between the air intake pipe 12 and the guide pipe 29. The air intake pipe 12 is connected to an external air pump.

[0049] A motor is installed outside the side plate 1. One end of the diversion pipe 29 passes through the vertical plate and is connected to the output shaft of the motor through a belt or a chain drive to drive the diversion cover 10 and the support ring 9 to rotate.

[0050] A through groove that slidably cooperates with the positioning block 402 is formed in the side plate 1. A connecting rod 101 is fixedly installed in the through groove. The connecting rod 101 passes through the positioning block 402 and slidably cooperates with it. A limiting spring is sleeved outside the connecting rod 101. The limiting spring is fixedly arranged between the end face of the through groove and the positioning block 402.

[0051] Refer to Figures 2 - 5 As shown, a guide rod 17 and a driving rod 18 are arranged between two support platforms 13 on the same horizontal plane. The guide rod 17 is fixedly connected to the support platform 13 and passes through the pressing plate 7 and slidably cooperates with the pressing plate 7. Both ends of the driving rod 18 pass through the support platform 13 and are rotatably connected to it. One end of the driving rod 18 passing through the support platform 13 extends into the pressing plate 7 and is threadedly connected to the pressing plate 7. A handle 16 is fixedly installed on the driving rod 18. With this structure, the pressing plate 7 can be driven to move, thereby clamping the pipe fitting 8.

[0052] A diversion channel 701 is arranged inside the pressing plate 7. Specifically, the bottom end of the diversion channel 701 is communicated with the diversion column 15, and the other end of the diversion channel 701 extends to the inner side surface of the pressing plate 7. A spring is arranged on the side of the sealing block 20 close to the bevel gear 6. The spring can be sleeved outside the connecting shaft 19 to achieve elastic cooperation between the sealing block 20 and the diversion column 15.

[0053] A groove that slidably cooperates with the block 23 is formed in the inner wall of the through groove. A first spring is fixedly arranged between the inner end face of the groove and the block 23. An installation hole that slidably cooperates with the traction block 2 is formed in the inner wall of the side plate 1. A second spring is fixedly arranged between the inner end face of the installation hole and the traction block 2.

[0054] Combined with Figure 8 As shown, a connecting plate 1502 is fixedly arranged at one end of the diversion column 15 close to the convex ring 1501. A through hole for installing the first turntable 25 is formed in the connecting plate 1502. The first turntable 25 is rotatably arranged at the through hole. In addition, a pressure plate 24 is fixedly arranged in the inner cavity of the diversion column 15 and close to the first turntable 25. The pressure plate 24 is in the shape of a Chinese character 'hui' and contacts the first turntable 25. A plurality of installation grooves are formed on the side of the first turntable 25 close to the pressure plate 24. A limiting block 2501 is elastically connected in the installation groove through a second spring. A limiting groove that cooperates with the limiting block 2501 is formed on the side face of the pressure plate 24 close to the first turntable 25. One end of the limiting block 2501 placed in the limiting groove is a spherical structure. When the cross bar 21 drives the first turntable 25 to rotate, the limiting block 2501 can move out of the limiting groove.

Claims

1. A pipeline leakage detection device, comprising two symmetrically arranged support rings, a plurality of guide columns are distributed on the support rings, a guide cover is arranged inside the support rings, one end of the guide column extends into the guide cover and is connected to the guide cover, characterized in that: A support platform for supporting the pipe is arranged at one end of the guide column away from the guide cover, a pressure plate is arranged outside the support platform, the pressure plate is communicated with the guide column, a convex ring is integrally formed on the end surface of one end of the guide column located inside the guide cover, a second rotating disk is fixedly installed in the convex ring, a first rotating disk is rotatably installed in the guide column, and a through slot is opened on both the first rotating disk and the second rotating disk; A driving assembly is provided at one end of the guide column away from the guide cover, a side plate is provided on the outer side of the support ring, a second rack is slidably installed on the inner side of the side plate, a first rack is provided on the side of the second rack close to the support ring, the first rack is longer than the second rack, and the first rack is fixedly connected to the side plate, and the position of the driving assembly can be adjusted according to the air pressure in the pipe, so that the driving assemblies on the two groups of guide columns can respectively mesh with the first rack and the second rack at the same time, so that the ends of the two groups of guide columns located inside the guide cover are both in an open state; The driving assembly includes a connecting shaft arranged at the end of the guide column, one end of the connecting shaft passes through the guide column, and one end of the connecting shaft passing through the guide column is fixedly sleeved with a bevel gear, and one end of the connecting shaft extending to the inside of the guide column is sleeved with a sealing block, the sealing block is elastically connected to the guide column and seals with the guide column, the connecting shaft and the first rotating disk are connected by a cross bar, and the cross bar can slide relative to the connecting shaft, and a spring is arranged on the side of the sealing block close to the bevel gear, and the spring is sleeved on the outside of the connecting shaft; The side plate is provided with an arc groove at the second rack, a positioning block is fixedly provided on the second rack, the positioning block is elastically provided in the arc groove, a clamping block is elastically connected at the bottom wall of the inner cavity of the arc groove, a clamping groove matching with the clamping block is provided on the bottom surface of the positioning block, a traction block is elastically connected at the inner wall of the side plate, a pull rope is fixedly provided between the traction block and the clamping block, an L-shaped traction plate is sleeved on the outer side of the connecting shaft, a magnet is fixedly embedded on a side of the traction plate close to the side plate, the traction block is made of iron, and the traction plate can fit with the inner side surface of the side plate during the rotation of the guide column; One end of the connecting shaft passing through the bevel gear is connected to a pull rod, the cross section of the pull rod is set to be T-shaped, and a strip groove is provided on a side of the second rack away from the side plate, and when the bevel gear is meshed with the second rack, the end of the pull rod away from the guide column can be in the strip groove; The side plate is provided with a through slot which is slidably matched with the positioning block, a connecting rod is fixedly installed in the through slot, the connecting rod passes through the positioning block and is slidably matched with the positioning block, and a limit spring is sleeved on the outside of the connecting rod, the limit spring is fixedly arranged between the end face of the through slot and the positioning block.

2. A pipeline leakage detection device according to claim 1, characterized in that: A pressure gauge is installed on the guide column.

3. A pipeline leakage detection device according to claim 1, characterized in that: A guide channel is arranged inside the pressure plate, one end of the guide channel is connected to the guide column, and the other end of the guide channel extends to the inner side of the pressure plate.

4. A pipeline leakage detection device according to claim 1, characterized in that: The first rack and the second rack are both configured in an arc shape.

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