Pipeline air leakage detection device and detection method

Abstract

The invention discloses a pipeline air leakage detection device and method, and belongs to the technical field of pipeline air leakage detection devices.The pipeline air leakage detection device comprises two supporting rings which are symmetrically arranged, a plurality of flow guide columns are distributed on the supporting rings, and flow guide covers are arranged in the supporting rings; one end of the flow guide column extends into the flow guide cover and communicates with the flow guide cover, and a supporting table used for supporting a pipe fitting is arranged at the end, away from the flow guide cover, of the flow guide column; when the flow guide column loaded with the non-air-leakage pipe fitting passes through the second rack, the flow guide column is also in an open state through meshing of the second rack and the bevel gear, so that the flow guide column loaded with the new pipe fitting can be communicated with the flow guide column loaded with the non-air-leakage pipe fitting through the flow guide cover; the air in the pipe fitting without air leakage can enter a new pipe fitting through the flow guide cover, so that the air conveying amount of the air pump is reduced, and more energy is saved.

Description

Technical Field

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

[0002] Existing pipeline leakage detection devices still have some defects. Most of them are done by placing the pipeline in water, inflating the pipeline, and observing whether there are bubbles on the surface of the pipeline. This method is time-consuming and laborious.

[0003] Chinese patent CN217980707U discloses a pipeline leakage detection device, which realizes the detection of the top of the pipeline through a first air pressure sensor, and realizes the alarm function of the device through an alarm, thereby enhancing the performance of the device and providing convenience for users.

[0004] The above-mentioned device injects gas into the pipe and uses structures such as sensors to detect whether the pipe is leaking. However, when the detection is completed, the gas in the pipe will be discharged. When the next pipe is detected, it is necessary to inject gas into the pipe again, which causes energy waste to a certain extent. In summary, the above-mentioned device still has room for improvement.

[0005] Therefore, it is necessary to provide a pipeline 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 leakage detection device and detection method to solve the problem that the existing device proposed in the above background technology injects gas into the pipe fitting and uses structures such as sensors to detect whether the pipe fitting is leaking, but when the detection is completed, the gas in the pipe fitting will be discharged. When the next pipe fitting is detected, it is necessary to inject gas into the pipe fitting again, which causes energy waste to a certain extent.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a pipeline gas 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 ring, one end of the guide column extends into the guide cover and is connected with the guide cover, a support platform for supporting the pipe fitting is arranged at one end of the guide column away from the guide cover, a pressure plate is arranged on the outside of the support platform, and the pressure plate is connected 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 turntable is fixedly installed in the convex ring, a first turntable is rotatably installed in the guide column, and a through notch is opened on both the first turntable and the second turntable; 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 one side of the second rack, and the first rack is fixedly connected to the side plate. The position of the driving assembly can be adjusted according to the air pressure in the pipe fitting, so that the driving assemblies on the two groups of guide columns can respectively engage 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 in an open state.

[0008] As a further solution of the present invention: 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 the connecting shaft passes through the end of the guide column and is fixed with a bevel gear, the 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 turntable are connected by a cross bar, and the cross bar can slide relative to the connecting shaft.

[0009] As a further solution of the present invention: the side plate is provided with an arc groove at the second rack, a positioning block is fixedly arranged on the second rack, the positioning block is elastically arranged in the arc groove, a clamping block is elastically connected to the bottom wall of the inner cavity of the arc groove, a clamping groove matching with the clamping block is arranged 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 a side of the traction plate close to the side plate, the traction block is made of iron, and during the rotation of the guide column, the traction plate can fit with the inner side surface of the side plate.

[0010] As a further solution of the present invention: the connecting shaft passes through one end of the bevel gear and is connected to a pull rod, the cross-section of the pull rod is set to be T-shaped, and a strip groove is opened on the side of the second rack away from the side plate. 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.

[0011] As a further solution of the present invention: a pressure gauge is installed on the guide column.

[0012] As a further solution of the present invention: 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, and the connecting rod passes through the positioning block and is slidably matched with the positioning block.

[0013] As a further solution of the present invention: 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.

[0014] As a further solution of the present invention: a spring is arranged on one side of the sealing block close to the bevel gear, and the spring is sleeved on the outside of the connecting shaft.

[0015] As a further solution of the present invention: the first rack and the second rack are both configured to be arc-shaped.

[0016] A method for detecting using the above-mentioned pipeline leakage detection device includes the following steps: placing the pipe to be detected on two support platforms on the same horizontal plane, and fixing the pipe between the two support platforms by a pressure plate; judging whether the pipe is leaking according to the reading of the pressure gauge; driving multiple groups of guide columns to rotate by a support ring, and utilizing the first rack and the second rack to mesh with the bevel gears at the ends of different groups of guide columns to connect the guide columns of different groups through the guide cover.

[0017] Compared with the prior art, the beneficial effect of the present invention is that: this device is provided with a first rack, so that when the guide column carrying the uninflated pipe passes through the first rack, the bevel gear on the guide column can engage with the first rack, so that the guide column is in an open state, and, in this process, the second rack releases the lock with the side plate and moves away from the support ring, and when the guide column carrying the non-leaking pipe passes through the second rack, the meshing of the second rack and the bevel gear makes the guide column also in an open state. At this point, the guide column carrying the new pipe and the guide column carrying the non-leaking pipe can be connected through the guide cover, so that the gas in the non-leaking pipe can enter the new pipe through the guide cover, thereby reducing the gas output of the air pump and saving more energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the connection structure between the guide column, the guide cover and the support ring of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a schematic diagram of the cooperation between the pull rod and the strip groove of the present invention; Figure 5 is a schematic diagram of the driving rod structure of the present invention; Figure 6 is a cross-sectional view of a guide column of the present invention; Figure 7 It is a schematic diagram of the pull rope structure of the present invention; Figure 8 The present invention Figure 6 A schematic diagram of the enlarged structure at B; Fig. 9 is a notch distribution diagram of the present invention; Fig.10 The present invention Figure 1 A schematic diagram of the enlarged structure at point A; Fig.11 It is a schematic diagram of the pressing plate structure of the present invention; Fig.12 The present invention Figure 6 Enlarged structural diagram at C.

[0019] 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, pressure plate; 701, diversion channel; 8, pipe fitting; 9, support ring; 10, deflector; 11, pressure gauge; 12, intake pipe; 13, support platform; 14, connecting pipe; 15, diversion column; 1501, convex ring; 1502, connecting plate; 16, handle; 17, guide rod; 18, driving rod; 19, connecting shaft; 1901, annular plate; 20, sealing block; 21, cross bar; 22, pull rope; 23, clamping block; 24, pressure plate; 25, first turntable; 2501, limit block; 26, second turntable; 27, traction plate; 28, notch; 29, diversion pipe; 30, metal hose. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 12 As shown, a pipeline leakage detection device and detection method include two symmetrically arranged support rings 9, on which a plurality of guide columns 15 are distributed in an annular array, and the guide columns 15 penetrate the support rings 9 and are fixedly connected thereto, Figure 1-Figure 2 As shown, a guide cover 10 is arranged inside the support ring 9, and the guide cover 10 is coaxially arranged with the support ring 9. The guide cover 10 is an annular structure with both ends in a closed state. One end of the guide column 15 extends into the guide cover 10 and is fixedly connected to the guide cover 10. Through this structure, when gas is injected into the guide cover 10, the gas can be dispersed into multiple guide columns 15 through the guide cover 10; A support platform 13 for supporting the pipe 8 is provided at one end of the guide column 15 away from the guide cover 10. Figure 2 As shown, the support platform 13 is fixedly arranged on the upper surface of the guide column 15, and the top of the support platform 13 is arranged as an arc surface that matches the pipe fitting 8, which is conducive to the stable placement of the pipe fitting 8.

[0021] Furthermore, a pressure plate 7 for sealing the pipe 8 is provided outside the support platform 13, and the pressure plate 7 and the guide column 15 are connected through a metal hose 30, so that the gas inside the guide cover 10 can be introduced into the pipe 8; Combination Figure 2-Figure 9 As shown, the end surface of the guide column 15 located inside the guide cover 10 is integrally formed with a convex ring 1501, and the second rotating disk 26 is fixedly installed in the convex ring 1501. Figure 8-Figure 9As shown, a first rotating disk 25 is rotatably installed in the guide column 15, the first rotating disk 25 is fitted with the second rotating disk 26, and a through slot 28 is opened on the first rotating disk 25 and the second rotating disk 26, and the slot 28 can be arc-shaped. When the slots 28 on the first rotating disk 25 and the second rotating disk 26 are aligned, the gas in the guide cover 10 can enter the guide column 15. On the contrary, when the slots 28 on the first rotating disk 25 and the second rotating disk 26 are staggered, the end of the guide column 15 located in the guide cover 10 is in a blocked state; The end of the guide column 15 away from the guide cover 10 is provided with a driving component for driving the first turntable 25 to rotate, and a side plate 1 is provided on the outer side of the support ring 9, and a second rack 4 is slidably installed on the inner side of the side plate 1, and a first rack 3 is provided on one side of the second rack 4, and the first rack 3 is fixedly connected to the side plate 1, and the first rack 3 is longer than the second rack 4. The first rack 3 and the second rack 4 are both arranged in an arc shape, that is, the first rack 3 and the second rack 4 can be regarded as a section cut from the bevel gear ring, and the above-mentioned first rack 3 and the second rack 4 can cooperate with the driving component, and actually During use, when the staff removes the pipe fitting 8 from a guide column 15 and installs the pipe fitting 8 to be tested, the driving assembly at the end of the guide column 15 can engage with the first rack 3 during the rotation, so that the end of the guide column 15 located inside the guide cover 10 is in an open state, and when the other guide column 15 rotates and passes through the second rack 4, the driving assembly on the guide column 15 can engage with the second rack 4, so that the high-pressure gas in the pipe fitting 8 can flow through the guide cover 10 to the pipe fitting 8 to be tested, which is conducive to making full use of the gas in the pipe fitting 8.

[0022] The driving assembly includes a connecting shaft 19 disposed at the end of the guide column 15. Figure 6 As shown, the connecting shaft 19 passes through the guide column 15 and can move relative to the guide column 15, and a bevel gear 6 is fixedly sleeved on one end of the connecting shaft 19 away from the guide column 15; Combination Figure 6-Figure 8As shown, the connecting shaft 19 extends to one end of the guide column 15 and is rotatably sleeved with a sealing block 20. The sealing block 20 is elastically connected to the guide column 15 and is sealed with the guide column 15. Specifically, a through circular hole can be opened at the center of the sealing block 20 so that the connecting shaft 19 passes through the circular hole, and an annular groove is opened on the inner wall of the circular 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 sealed with the annular groove. A cross bar 21 is arranged between the connecting shaft 19 and the first rotating disk 25. One end of the cross bar 21 is fixedly connected to the first rotating disk 25, and the other end of the cross bar 21 extends into the connecting shaft 19 and is slidably matched with it. The cross section of the cross bar 21 It is rectangular, so that the connecting shaft 19 can drive the first turntable 25 to rotate synchronously through the cross bar 21. When gas is injected into the pipe 8 for detection through the deflector 10, the sealing block 20 is affected by the air pressure and drives the connecting shaft 19 and the bevel gear 6 to move outward, so that the bevel gear 6 can mesh with the second rack 4 during the rotation of the deflector column 15. When the staff removes the tested pipe 8 and places the pipe 8 to be tested, since gas is not injected into the pipe 8, the gas pressure in the pipe 8 and the deflector column 15 is low. At this time, the bevel gear 6 on the connecting shaft 19 is close to the end of the deflector column 15, so that the bevel gear 6 can mesh with the first rack 3 during the rotation of the deflector column 15.

[0023] The side plate 1 is provided with an arc groove at the second rack 4, and a positioning block 402 is fixedly provided on the second rack 4. The positioning block 402 is elastically provided in the arc groove, and a clamping block 23 is elastically connected to the bottom wall of the inner cavity of the arc groove, and a clamping groove matching with the clamping block 23 is provided 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 guide column 15, the bevel gear 6 at the end of the guide column 15 will pass from the outside of the second rack 4. Through this structure, the bevel gear 6 and the second rack 4 will not contact during the detection process. The positioning block 402 is close to the side of the clamping block 23 and is chamfered at the side. The chamfer can avoid interference between the positioning block 402 and the clamping block 23 during movement. Furthermore, the inner wall of the side plate 1 is elastically connected to a traction block 2, and 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 slides with it. Figure 2 , Figure 6 as well as Fig.10As shown, an L-shaped traction plate 27 is sleeved on the outside of the connecting shaft 19. Specifically, the connecting shaft 19 passes through the traction plate 27 and rotates with it. The traction plate 27 is slidably arranged on one side of the guide column 15. A magnet is fixedly embedded on a side of the traction plate 27 close to the side plate 1. The traction block 2 is made of iron. During the rotation of the guide column 15, the traction plate 27 can contact the inner side of the side plate 1. When the bevel gear 6 starts to mesh with the first rack 3, the traction plate 27 can overlap with the traction block 2.

[0024] One end of the connecting shaft 19 passing through the bevel gear 6 is connected to a pull rod 5, and the cross-section of the pull rod 5 is set to be T-shaped. During specific installation, the pull rod 5 can be rotatably or fixedly matched with the connecting shaft 19. A strip groove 401 is provided on the side of the second rack 4 away from the side plate 1, and the two ends of the strip groove 401 extend to the two end faces of the second rack 4 respectively. When the bevel gear 6 is engaged with the second rack 4, the end of the pull rod 5 away from the guide column 15 can be in the strip groove 401. Through this structure, when the connecting shaft 19 slides relative to the guide column 15, the second rack 4 can be driven to move through the cooperation between the pull rod 5 and the strip groove 401. When the bevel gear 6 is engaged with the first rack 3, the pull rod 5 can be on the outside of the first rack 3, thereby avoiding interference between the pull rod 5 and the first rack 3.

[0025] In actual use, the staff will place the pipe 8 to be tested on the support table 13, referring to Figure 1-Figure 2 As shown, the two ends of the pipe 8 are blocked by the pressing plate 7. In the initial state, no gas is filled into the pipe 8, so the bevel gear 6 is located close to the guide column 15; When the support ring 9 drives the multiple guide columns 15 to rotate, the bevel gear 6 at the end of the guide column 15 can mesh with the first rack 3, and 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, and the cross bar 21 can drive the first turntable 25 to rotate. When the first turntable 25 is aligned with the notch 28 on the second turntable 26, the gas inside the guide cover 10 can enter the guide column 15. In this process, gas is injected into the guide cover 10 through an external air pump, and the gas is introduced into the pipe 8 through the guide column 15 and the metal hose 30, thereby increasing the air pressure inside the pipe 8. When all the pipes 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 by the cooperation of the clamping block 23 and the clamping groove to prevent the bevel gear 6 from interfering with the guide column 15 during its rotation. 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; 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; 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.

[0026] like Figure 1-Figure 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.

[0027] A motor is installed on the outer side of the side plate 1, and one end of the air guide pipe 29 passes through the vertical plate and is connected to the output shaft of the motor through a belt or chain transmission, thereby driving the air guide cover 10 and the support ring 9 to rotate.

[0028] The side plate 1 is provided with a through slot which is slidably engaged with the positioning block 402 , in which a connecting rod 101 is fixedly installed, the connecting rod 101 passes through the positioning block 402 and is slidably engaged with it, and a limit spring is sleeved on the outside of the connecting rod 101 , and the limit spring is fixedly arranged between the end face of the through slot and the positioning block 402 .

[0029] Reference Figure 2-Figure 5 As shown, a guide rod 17 and a driving rod 18 are provided between two support platforms 13 on the same horizontal plane, the guide rod 17 is fixedly connected to the support platform 13, and the guide rod 17 passes through the pressure plate 7 and slides with the pressure plate 7, both ends of the driving rod 18 pass through the support platform 13 and are rotatably connected thereto, the driving rod 18 passes through one end of the support platform 13 and extends into the pressure plate 7 and is threadedly connected to the pressure plate 7, a handle 16 is fixedly installed on the driving rod 18, and this structure can drive the pressure plate 7 to move, thereby clamping the pipe fitting 8.

[0030] A guide channel 701 is arranged inside the pressure plate 7. Specifically, the bottom end of the guide channel 701 is connected to the guide column 15, and the other end of the guide channel 701 extends to the inner side of the pressure 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 on the outside of the connecting shaft 19 to achieve elastic cooperation between the sealing block 20 and the guide column 15.

[0031] A groove that slides with the block 23 is formed on the inner wall of the through slot, and a first spring is fixedly arranged between the inner end surface of the groove and the block 23, while a mounting hole that slides with the traction block 2 is formed on the inner wall of the side plate 1, and a second spring is fixedly arranged between the inner end surface of the mounting hole and the traction block 2.

[0032] Combination Figure 8 As shown, a connecting plate 1502 is fixedly provided at one end of the guide column 15 near the convex ring 1501, and a through hole is opened on the connecting plate 1502 for installing the first turntable 25, and the first turntable 25 is rotatably set at the through hole. In addition, a pressure plate 24 is fixedly provided in the inner cavity of the guide column 15 and near the first turntable 25. The pressure plate 24 is in a "U" shape and contacts the first turntable 25. A plurality of mounting grooves are opened on one side of the first turntable 25 near the pressure plate 24, and a limiting block 2501 is elastically connected to the mounting groove by a second spring, and a limiting groove matching the limiting block 2501 is opened on one side of the pressure plate 24 near the first turntable 25, and the 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 one side of the second rack, and the first rack is fixedly connected to the side plate. The position of the driving assembly can be adjusted according to the air pressure in the pipe fitting, so that the driving assemblies on the two groups of guide columns can respectively engage 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 in an open state.

2. A pipeline leakage detection device according to claim 1, characterized in that: 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 the connecting shaft passes through the end of the guide column and is fixed with a bevel gear. The 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 turntable are connected by a cross bar, and the cross bar can slide relative to the connecting shaft.

3. A pipeline leakage detection device according to claim 2, characterized in that: The side plate is provided with an arc groove at the second rack, and a positioning block is fixedly arranged on the second rack. The positioning block is elastically arranged in the arc groove, and a clamping block is elastically connected to the bottom wall of the inner cavity of the arc groove. A clamping groove matching 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, and 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, and 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.

4. A pipeline leakage detection device according to claim 3, characterized in that: The connecting shaft passes through one end of the bevel gear and is connected to a pull rod, the cross-section of the pull rod is set to be T-shaped, and a strip groove is opened on the side of the second rack away from the side plate. 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.

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

6. A pipeline leakage detection device according to claim 3, characterized in that: 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, and the connecting rod passes through the positioning block and is slidably matched with the positioning block.

7. 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.

8. A pipeline leakage detection device according to claim 2, characterized in that: A spring is arranged on one side of the sealing block close to the bevel gear, and the spring is sleeved on the outside of the connecting shaft.

9. 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.

10. A method for detecting a pipeline leakage using the pipeline leakage detection device as claimed in claim 5, characterized in that: The method comprises the following steps: placing the pipe to be inspected on two support platforms on the same horizontal plane, and fixing the pipe between the two support platforms by a pressure plate; judging whether the pipe is leaking according to the reading of the pressure gauge; driving multiple groups of guide columns to rotate by a support ring, and utilizing the first rack and the second rack to mesh with the bevel gears at the ends of different groups of guide columns to connect the guide columns of different groups through the guide cover.

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