A geomembrane joint vacuum detection device for reservoir engineering construction

Abstract

The present invention discloses a geomembrane joint vacuum detection device for reservoir engineering construction, specifically relates to the technical field of vacuum detection devices, including a base, a second bracket is fixedly provided on the top of the base, an inner tube is provided inside the second bracket, two outer tubes are sleeved on the outer end of the inner tube and are movably connected to the outer tube through a sealing bearing, a baffle is fixedly provided on the outer end of the outer tube, a cylindrical isolation net is provided between the two outer tubes, and a conduction port is opened on the outer end of the inner tube. The present invention passes the geomembrane around the outer end of the outer tube and the cylindrical isolation net, and uses the geomembrane to seal the conduction port, then drives the lower roller to rotate and pull the geomembrane to move by a motor, and uses the negative pressure at the conduction port to detect the joint of the geomembrane. By performing detection in this way, the geomembrane can be detected while continuously moving, and there is no need to detect it in sections, which greatly improves the efficiency of detection.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum detection devices, and more specifically to a geomembrane joint vacuum detection device for reservoir engineering construction. Background Art

[0002] Geomembrane is an anti-seepage substrate, which is composited with plastic film and non-woven fabric as the base materials. Its main function is waterproofing. It is often used for anti-seepage of roadbeds of railways and highways, anti-seepage of building roofs, and leakage prevention of reservoirs and river embankments in water conservancy projects.

[0003] During the construction of reservoir projects, geomembrane is an essential material. However, during the use of geomembrane, it may be spliced ​​as needed. Special attention should be paid to the joints after splicing to avoid leakage. Therefore, it is necessary to test the sealing of the joints.

[0004] To detect the seams of geomembranes, a vacuum detection device is needed. Traditional vacuum detection devices can only detect seams in sections and cannot perform continuous detection. They can only detect whether there is leakage at the seams. The leakage speed cannot be reflected intuitively, and the size of the leakage area cannot be intuitively judged. In addition, during the detection process, the strong suction of the detection device can easily cause damage to the seams due to suction. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a geomembrane joint vacuum detection device for reservoir engineering construction to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a geomembrane joint vacuum detection device for reservoir engineering construction, comprising a base, a second bracket is fixedly provided on the top of the base, an inner tube is provided inside the second bracket, two ends of the inner tube are respectively fixedly connected to the inner walls on both sides of the second bracket, the outer end of the inner tube is sleeved with two outer tubes and movably connected to the outer tubes through sealing bearings, a baffle is fixedly provided on the outer end of the outer tube, the baffle plays a role of limiting, a cylindrical isolation net is provided between the two outer tubes, the two ends of the cylindrical isolation net are respectively fixedly connected to one end of the two outer tubes, the cylindrical isolation net is arranged on the outer end of the inner tube, the outer end of the inner tube is inlaid with a third sealing gasket, the outer end of the third sealing gasket is in contact with the outer tube and the inner wall of the cylindrical isolation net, one side improves the sealing of the inner tube, and a conducting port is opened at the outer end of the inner tube, the conducting port is located on the inner side of the cylindrical isolation net, and plays a role of ventilation.

[0007] Furthermore, a liquid outlet hole is fixedly provided at one end of the inner tube, and the liquid outlet hole extends to one side of the second bracket. An air pump is fixedly provided on the liquid outlet hole to extract the air inside the inner tube to create a negative pressure inside the inner tube.

[0008] A drive box is fixedly arranged on the top of the base, a top cover is arranged on the top of the drive box and connected to the top cover by bolts, a control panel is fixedly arranged on one side of the drive box, all electrical components are controlled by the control panel, and a barometer and a timer are fixedly arranged on the control panel;

[0009] A motor is fixedly provided on one side of the driving box, and two lower rollers and two upper rollers are arranged inside the driving box. Both ends of the lower rollers and the upper rollers are movably connected to the inner walls on both sides of the driving box through bearings respectively. One end of the output shaft of the motor extends into the driving box and is fixedly connected to one end of one of the lower rollers, so that the geomembrane is driven to move by the lower roller.

[0010] Furthermore, the outer ends of the lower roller and the upper roller are fixed with second anti-skid pads, the second anti-skid pads at the outer ends of the two lower rollers are in contact with each other, and the second anti-skid pads at the outer ends of the two upper rollers are in contact with each other, thereby playing an anti-skid role;

[0011] A pressure plate is provided inside the drive box, and a first anti-slip pad is provided at the bottom end of the pressure plate and is connected to the first anti-slip pad by bolts. The first anti-slip pad contacts with a second anti-slip pad at the outer end of one of the upper rollers, so that the movement of the geomembrane has resistance, a threaded rod is provided at the top end of the pressure plate and is movably connected to one end of the threaded rod by a bearing, the other end of the threaded rod extends to the top of the top cover and is connected to the top cover by threads, a lever is fixedly provided at the other end of the threaded rod, and the guide rod is rotated to push the pressure plate, and two guide rods are fixedly provided at the top end of the pressure plate, and one end of the guide rod extends to the top of the top cover to ensure that the pressure plate moves along a straight line.

[0012] Furthermore, two first brackets are provided inside the driving box, and the two sides of the first brackets are movably connected to the inner walls of the two sides of the driving box through slide rails, and a fastening roller is provided inside the first bracket, and the two ends of the fastening roller are movably connected to the inner walls of the two sides of the first bracket through bearings, and a slide groove is provided on one side of the driving box, and a connecting plate is fixedly provided on one side of the first bracket, and one end of the connecting plate extends to one side of the driving box through the slide groove and is fixedly provided with an insertion rod, so as to clamp and tighten the geomembrane;

[0013] A sealing tube is provided on one side of the drive box. The sealing tube is made of high-strength glass, and its interior can be seen. Two mounting plates are fixedly provided at the outer end of the sealing tube, and one end of the mounting plate is connected to the drive box. One end of the two plug rods extends into the interior of the sealing tube, and a first spring is fixedly provided at one end of the plug rod. A first sealing block is fixedly provided at one end of the first spring, and a second sealing gasket is fixedly provided on the first sealing block. The outer ends of the first sealing block and the second sealing gasket are in contact with the inner wall of the sealing tube, thereby improving the sealing performance of the first sealing block. Two limiting rods are provided between the two first sealing blocks, and both ends of the limiting rods are fixedly connected to the inner wall of the sealing tube, and the limiting rods play a limiting role. An exhaust pipe is fixedly provided at the outer end of the sealing tube, and a valve is fixedly provided on the exhaust pipe, and the exhaust pipe is arranged between the two limiting rods.

[0014] Furthermore, a hollow threaded column is provided inside the inner tube, and two air holes are provided at the outer end of the hollow threaded column, so that the air pressure inside the hollow threaded column is the same as that of the inner tube, one end of the hollow threaded column extends to the other side of the second bracket and is fixedly provided with a fixing plate, and a mounting tube is fixedly provided on the inner wall of one side of the inner tube, and the mounting tube sleeve is provided at the outer end of the hollow threaded column and is connected to the hollow threaded column by threads, so as to fix the hollow threaded column;

[0015] A cross bar is provided inside the hollow threaded column, and both ends of the cross bar are fixedly connected to the inner wall of the hollow threaded column, a second spring is fixedly provided at the outer end of the cross bar, a second sealing block is fixedly provided at one end of the second spring, and a fourth sealing gasket is fixedly provided at one side of the second sealing block, the outer ends of the second sealing block and the fourth sealing gasket are both in contact with the inner wall of the hollow threaded column, a first electrode sheet is inlaid on the outer end of the second sealing block, and a second electrode sheet is inlaid on the inner wall of the hollow threaded column, the first electrode sheet and the second electrode sheet are electrically connected to the timer on the control panel to calculate the leakage rate and then determine the size of the leakage.

[0016] Furthermore, a fixed shaft is provided inside the second bracket, and the fixed shaft is provided at the bottom of the outer tube. Both ends of the fixed shaft are movably connected to the inner walls on both sides of the second bracket through an electric rotating shaft, and the fixed shaft is driven to rotate by the electric rotating shaft. A connecting arm is fixedly provided at the outer end of the fixed shaft, and an arc-shaped sealing plate is fixedly provided at one end of the connecting arm. A first sealing gasket is fixedly provided on the inner side of the arc-shaped sealing plate. By buckling the first sealing gasket at the conducting port, the interior of the inner tube can be sealed.

[0017] Furthermore, a driving shaft is provided on the fixed plate and is movably connected to one end of the driving shaft through an electric rotating shaft, a driving arm is fixedly provided at the other end of the driving shaft, an air guide tube is fixedly provided at one end of the driving arm, the air guide tube is provided at the top of the outer tube, a plurality of nozzles are fixedly provided at the outer end of the air guide tube, and water mist is sprayed out through the nozzles;

[0018] One end of the air guide tube is sleeved with a sleeve and movably connected to the sleeve through a sealed bearing, a hose is fixedly provided at the outer end of the sleeve, an atomizer is provided at the rear side of the base, and one end of the hose is connected to the atomizer to generate and transport water mist.

[0019] Furthermore, an extension rod is fixedly provided at the other end of the hollow threaded column, one end of the extension rod is sleeved with a sealing glass cover and is threadedly connected to the sealing glass cover, so that the interior of the sealing glass cover is closed, and a camera is fixedly provided at one end of the extension rod, and leakage is confirmed by taking pictures through the camera, and an illumination lamp is fixedly provided on the inner wall of one side of the sealing glass cover to serve as illumination.

[0020] Furthermore, a hollow shaft is provided inside the drive box, one end of the hollow shaft extends to one side of the drive box and is sleeved with a connecting pipe to transport soapy water into the hollow shaft, the inner wall of the connecting pipe is movably connected to one end of the hollow shaft through a sealed bearing, the connecting pipe is fixed on one side of the drive box, the other end of the hollow shaft is movably connected to the inner wall of the other side of the drive box through a bearing, the other end of the hollow shaft is fixedly provided with a clockwork spring, one end of the clockwork spring is fixedly connected to the inner wall of the other side of the drive box, and the elastic force of the clockwork spring drives the hollow shaft, causing it to tend to rotate.

[0021] Furthermore, a liquid guide tube is provided at the bottom of the hollow shaft, and a plurality of infusion tubes are fixedly provided at the outer end of the liquid guide tube. One end of the infusion tube is connected to the hollow shaft to introduce soapy water into the liquid guide tube. A sponge cover is provided at the outer end of the liquid guide tube, and a plurality of liquid outlet holes are opened at the outer end of the liquid guide tube. Soapy water seeps out through the liquid outlet holes and is applied using the sponge cover.

[0022] Technical effects and advantages of the present invention:

[0023] 1. The present invention passes the geomembrane around the outer end of the outer tube and the cylindrical isolation net, uses the geomembrane to seal the conduction port, then drives the lower roller to rotate and pull the geomembrane to move through the motor, and uses the negative pressure at the conduction port to detect the joints of the geomembrane. By performing detection in this way, the geomembrane can be detected while moving continuously, and there is no need to detect it section by section, so the detection efficiency is greatly improved.

[0024] 2. The present invention wraps the joint of the geomembrane around the outer end of the cylindrical isolation net for detection. The negative pressure at the conduction port produces an adsorption effect on the geomembrane. However, under the obstruction of the cylindrical isolation net, the geomembrane will not undergo a large deformation due to the negative pressure, thereby avoiding damage to the geomembrane due to negative pressure during the detection process.

[0025] 3. The present invention installs the hollow threaded column inside the inner tube so that the pressure inside the hollow threaded column and the inner tube change synchronously. Once the geomembrane is damaged and the air pressure rises, the elastic force of the second spring pulls the second sealing block to move inside the hollow threaded column, so that the first electrode sheet at the outer end of the second sealing block passes through the second electrode sheet during the movement. During the contact process, the timer counts to calculate the speed of the air pressure rise. The greater the degree of leakage, the faster the rising time, so as to intuitively detect the leakage time and reflect the degree of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A perspective view of the present invention;

[0027] Figure 2 A perspective view of the present invention;

[0028] Figure 3 A three-dimensional diagram of the outer tube of the present invention;

[0029] Figure 4 A three-dimensional diagram of a drive box of the present invention;

[0030] Figure 5 It is a three-dimensional half-section view of the inner tube of the present invention;

[0031] Figure 6 For the present invention Figure 5 Enlarged view of middle C;

[0032] Figure 7 For the present invention Figure 5 Enlarged view of the middle D part;

[0033] Figure 8 It is a three-dimensional half-section view of the drive box of the present invention;

[0034] Fig. 9 For the present invention Figure 8 Enlarged view of part A in the middle;

[0035] Fig.10 It is a three-dimensional half-section view of the sealing tube of the present invention;

[0036] Fig.11 It is a three-dimensional half-section view of the hollow shaft and the liquid guiding tube of the present invention;

[0037] Fig.12 For the present invention Fig.11 Enlarged view of part B in the middle.

[0038] The accompanying drawings are marked as follows: 1, base; 2, motor; 3, control panel; 4, drive box; 5, top cover; 6, first bracket; 7, fastening roller; 8, sleeve; 9, hose; 10, outer tube; 11, cylindrical isolation net; 12, fixed shaft; 13, atomizer; 14, arc sealing plate; 15, connecting arm; 16, second bracket; 17, fixed plate; 18, drive arm; 19, plug rod; 20, mounting plate; 21, sealing tube; 22, lower roller; 23, upper roller; 24, air pump; 25, air guide tube; 26, baffle; 27, nozzle; 28, drive shaft; 29, first electrode sheet; 30, first sealing pad; 31, connecting pipe; 32, slide groove; 33, connecting plate; 34, Threaded rod; 35, guide rod; 36, hollow shaft; 37, infusion tube; 38, catheter; 39, pressure plate; 40, first anti-skid pad; 41, second anti-skid pad; 42, first sealing block; 43, second sealing pad; 44, exhaust pipe; 45, limit rod; 46, first spring; 47, clockwork spring; 48, sponge cover; 49, liquid outlet; 50, inner tube; 51, conduction port; 52, extension rod; 53, air vent; 54, hollow threaded column; 55, mounting tube; 56, cross bar; 57, second electrode sheet; 58, third sealing pad; 59, lighting lamp; 60, camera; 61, sealing glass cover; 62, second spring; 63, second sealing block; 64, fourth sealing pad. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Refer to the instruction manual Figure 1-12The present invention provides a geomembrane joint vacuum detection device for reservoir engineering construction, including a base 1, a second bracket 16 is fixedly provided on the top of the base 1, an inner tube 50 is provided inside the second bracket 16, two ends of the inner tube 50 are respectively fixedly connected to the inner walls of the second bracket 16, two outer tubes 10 are sleeved on the outer end of the inner tube 50 and are movably connected to the outer tube 10 through a sealing bearing, a baffle 26 is fixedly provided on the outer end of the outer tube 10, and the baffle 26 plays a role of limiting. The two outer tubes 1 0, a cylindrical isolation net 11 is provided between the two ends of the cylindrical isolation net 11, and the two ends of the cylindrical isolation net 11 are respectively fixedly connected to one end of the two outer tubes 10, the cylindrical isolation net 11 is provided at the outer end of the inner tube 50, and the outer end of the inner tube 50 is inlaid with a third sealing gasket 58, the outer end of the third sealing gasket 58 is in contact with the inner wall of the outer tube 10 and the cylindrical isolation net 11, and one side improves the sealing performance of the inner tube 50, and the outer end of the inner tube 50 is provided with a conducting port 51, and the conducting port 51 is located on the inner side of the cylindrical isolation net 11 to play a role in ventilation.

[0041] A liquid outlet 49 is fixedly provided at one end of the inner tube 50, and the liquid outlet 49 extends to one side of the second bracket 16. An air pump 24 is fixedly provided on the liquid outlet 49 to extract the air inside the inner tube 50 to create a negative pressure inside the inner tube 50.

[0042] A driving box 4 is fixedly arranged on the top of the base 1, a top cover 5 is arranged on the top of the driving box 4 and connected to the top cover 5 by bolts, a control panel 3 is fixedly arranged on one side of the driving box 4, all electrical components are controlled by the control panel 3, and a barometer and a timer are fixedly arranged on the control panel 3;

[0043] A motor 2 is fixedly provided on one side of the driving box 4, and two lower rollers 22 and two upper rollers 23 are provided inside the driving box 4. Both ends of the lower rollers 22 and the upper rollers 23 are movably connected to the inner walls of both sides of the driving box 4 through bearings. One end of the output shaft of the motor 2 extends into the driving box 4 and is fixedly connected to one end of one of the lower rollers 22, so that the geomembrane is driven to move by the lower roller 22.

[0044] Pass one end of the geomembrane between the two upper rollers 23, clamp it with the upper roller 23, and then pass the geomembrane around the outer end of the outer tube 10, so that the cylindrical isolation net 11 contacts the inner side of the geomembrane joint. After passing one end of the geomembrane around the outer end of the outer tube 10, pass between the two lower rollers 22. During the inspection, turn on the motor 2, and the motor 2 drives the lower roller 22 to rotate and then pull the geomembrane to move at a uniform speed. During the movement, the outer tube 10 and the cylindrical isolation net 11 will roll with the movement of the geomembrane, and most of the outer end of the cylindrical isolation net 11 will be covered and wrapped by the geomembrane, which makes the originally breathable conduction port 51 blocked by the geomembrane, and a closed space is formed inside the inner tube 50. Before the inspection, the air in the inner tube 50 is extracted through the air pump 24 and the liquid outlet 49. The air inside makes the inner tube 50 in a vacuum negative pressure state, so the geomembrane passing through the conducting port 51 will be affected by the negative pressure. When the geomembrane passing through this place is unsealed and leaks, the external air will enter the inner tube 50 through the leak, causing the air pressure inside the inner tube 50 to increase. At this time, by observing the air pressure changes inside the inner tube 50 through a barometer, the leakage of the geomembrane can be detected in time. By detecting in this way, the geomembrane can be detected while continuously moving, and there is no need to detect it section by section, so the detection efficiency is greatly improved. In addition, the negative pressure at the conducting port 51 produces an adsorption effect on the geomembrane, but under the obstruction of the cylindrical isolation net 11, the geomembrane will not undergo a large deformation due to the negative pressure, thereby avoiding the damage of the geomembrane due to negative pressure during the detection process.

[0045] In order to make the conducting opening 51 fully wrapped by the geomembrane, Figure 4 , 8 9, 10, the outer ends of the lower roller 22 and the upper roller 23 are fixed with second anti-skid pads 41, the second anti-skid pads 41 at the outer ends of the two lower rollers 22 contact each other, and the second anti-skid pads 41 at the outer ends of the two upper rollers 23 contact each other, thereby playing an anti-skid role;

[0046] A pressure plate 39 is provided inside the driving box 4, and a first anti-skid pad 40 is provided at the bottom end of the pressure plate 39 and is connected to the first anti-skid pad 40 by bolts. The first anti-skid pad 40 contacts the second anti-skid pad 41 at the outer end of one of the upper rollers 23, so that the movement of the geomembrane has resistance. A threaded rod 34 is provided at the top of the pressure plate 39 and is movably connected to one end of the threaded rod 34 by a bearing, and the other end of the threaded rod 34 extends to the top of the top cover 5 and is connected to the top cover 5 by threads. A lever is fixedly provided at the other end of the threaded rod 34, and the guide rod 35 is rotated to push the pressure plate 39. Two guide rods 35 are fixedly provided at the top of the pressure plate 39, and one end of the guide rod 35 extends to the top of the top cover 5 to ensure that the pressure plate 39 moves along a straight line.

[0047] Two first brackets 6 are provided inside the driving box 4, and the two sides of the first bracket 6 are movably connected to the inner walls of the two sides of the driving box 4 through slide rails. A fastening roller 7 is provided inside the first bracket 6, and the two ends of the fastening roller 7 are movably connected to the inner walls of the two sides of the first bracket 6 through bearings. A slide groove 32 is provided on one side of the driving box 4, and a connecting plate 33 is fixedly provided on one side of the first bracket 6. One end of the connecting plate 33 extends to one side of the driving box 4 through the slide groove 32 and is fixedly provided with an insertion rod 19, so as to clamp and tighten the geomembrane.

[0048] A sealing tube 21 is provided on one side of the drive box 4. The sealing tube 21 is made of high-strength glass, and its interior can be seen. Two mounting plates 20 are fixedly provided at the outer end of the sealing tube 21. One end of the mounting plate 20 is connected to the drive box 4. One ends of the two plug rods 19 extend into the sealing tube 21. A first spring 46 is fixedly provided at one end of the plug rod 19. A first sealing block 42 is fixedly provided at one end of the first spring 46. A second sealing gasket 43 is fixedly provided on the first sealing block 42. The outer ends of the first sealing block 42 and the second sealing gasket 43 are in contact with the inner wall of the sealing tube 21, thereby improving the sealing performance of the first sealing block 42. Two limiting rods 45 are provided between the two first sealing blocks 42. Both ends of the limiting rod 45 are fixedly connected to the inner wall of the sealing tube 21, and the limiting rod 45 plays a limiting role. An exhaust pipe 44 is fixedly provided at the outer end of the sealing tube 21. A valve is fixedly provided on the exhaust pipe 44, and the exhaust pipe 44 is arranged between the two limiting rods 45.

[0049] In the process of pulling the geomembrane, the upper roller 23 will also rotate, so rotating the threaded rod 34 can push the pressure plate 39, so that the first anti-skid pad 40 at the bottom of the pressure plate 39 contacts the second anti-skid pad 41 at the outer end of the upper roller 23, so that the rotation of the upper roller 23 has resistance, which will make the geomembrane in a taut state during the movement process. At the same time, the air inside the sealing tube 21 can be extracted, so that the air pressure inside the sealing tube 21 is reduced, and the negative pressure pulls the first sealing block 42 downward and then stretches the first spring 46. The tension of the first spring 46 is different depending on the downward position of the first sealing block 42. The first spring 46 pulls the insertion rod 19 and then pulls the first bracket 6 and the fastening roller 7. Through the first bracket 6 and the fastening roller 7, the two geomembranes going back and forth are clamped and contracted, thereby increasing the contact area between the geomembrane and the cylindrical isolation net 11, ensuring that the conducting port 51 is closed by the geomembrane.

[0050] In order to intuitively detect the leakage degree of geomembrane, Figure 5-7A hollow threaded column 54 is provided inside the inner tube 50, and two air holes 53 are provided at the outer end of the hollow threaded column 54, so that the air pressure inside the hollow threaded column 54 is the same as that of the inner tube 50. One end of the hollow threaded column 54 extends to the other side of the second bracket 16 and is fixed with a fixing plate 17. A mounting tube 55 is fixed on the inner wall of one side of the inner tube 50. The mounting tube 55 is sleeved on the outer end of the hollow threaded column 54 and is connected to the hollow threaded column 54 by threads, so as to fix the hollow threaded column 54.

[0051] A cross bar 56 is provided inside the hollow threaded column 54, and both ends of the cross bar 56 are fixedly connected to the inner wall of the hollow threaded column 54, and a second spring 62 is fixedly provided at the outer end of the cross bar 56, and a second sealing block 63 is fixedly provided at one end of the second spring 62, and a fourth sealing gasket 64 is fixedly provided on one side of the second sealing block 63. The outer ends of the second sealing block 63 and the fourth sealing gasket 64 are in contact with the inner wall of the hollow threaded column 54, and the outer end of the second sealing block 63 is inlaid with a first electrode sheet 29, and the inner wall of the hollow threaded column 54 is inlaid with a second electrode sheet 57, and the first electrode sheet 29 and the second electrode sheet 57 are electrically connected to the timer on the control panel 3 to calculate the leakage rate and then determine the size of the leakage.

[0052] The hollow threaded column 54 is installed inside the inner tube 50, and the two are connected by the air vent 53. The inside of the hollow threaded column 54 will also be in a negative pressure state. The negative pressure generates suction on the second sealing block 63, so that the second spring 62 is in a stretched state. Once a geomembrane leaks, the air pressure inside the hollow threaded column 54 rises synchronously with the inner tube 50, and the adsorption force on the second sealing block 63 decreases. The elastic force of the second spring 62 pulls the second sealing block 63 to move. When the air pressure rises to value A, the second sealing block 63 moves to the second electrode sheet 57, the first electrode sheet 29 contacts the second electrode sheet 57, and the timer starts timing. When the air pressure continues to rise to value B, the first electrode sheet 29 moves to separate from the second electrode sheet 57, and the timer stops timing. In this way, the time required for the air pressure inside the inner tube 50 to rise from A to B is calculated. The greater the degree of leakage, the faster the rising time, so as to intuitively detect the leakage time and reflect the magnitude of the leakage degree.

[0053] Before the test begins, the inner tube 50 needs to be tested. Figure 3A fixed shaft 12 is provided inside the second bracket 16, and the fixed shaft 12 is provided at the bottom of the outer tube 10. The two ends of the fixed shaft 12 are movably connected to the inner walls of the second bracket 16 on both sides through an electric rotating shaft, and the fixed shaft 12 is driven to rotate by the electric rotating shaft. A connecting arm 15 is fixedly provided at the outer end of the fixed shaft 12, and an arc-shaped sealing plate 14 is fixedly provided at one end of the connecting arm 15. A first sealing gasket 30 is fixedly provided on the inner side of the arc-shaped sealing plate 14. The first sealing gasket 30 is buckled at the conducting port 51, so that the inside of the inner tube 50 can be sealed.

[0054] Before the detection begins, the fixed shaft 12 is driven to rotate by an electric shaft and drives the connecting arm 15 and the arc-shaped sealing plate 14 to rotate, and the arc-shaped sealing plate 14 is rotated to the cylindrical isolation net 11, so that the first sealing gasket 30 on the inner side of the arc-shaped sealing plate 14 contacts the outer tube 10 and the cylindrical isolation net 11, and the conducting port 51 is closed. At this time, the air inside the inner tube 50 is extracted to detect whether the inner tube 50 is sealed, so as to avoid interference with the detection due to problems with the sealing of the inner tube 50 itself.

[0055] To determine the location of the leak, Figure 3 The fixed plate 17 is provided with a driving shaft 28 and is movably connected to one end of the driving shaft 28 through an electric shaft. The other end of the driving shaft 28 is fixedly provided with a driving arm 18. One end of the driving arm 18 is fixedly provided with an air guide tube 25. The air guide tube 25 is provided at the top of the outer tube 10. A plurality of nozzles 27 are fixedly provided at the outer end of the air guide tube 25, and water mist is sprayed out through the nozzles 27.

[0056] One end of the air guide tube 25 is sleeved with a sleeve 8 and movably connected to the sleeve 8 through a sealed bearing. A hose 9 is fixedly provided at the outer end of the sleeve 8. An atomizer 13 is provided on the rear side of the base 1. One end of the hose 9 is connected to the atomizer 13 to generate and transport water mist.

[0057] The atomizer 13 processes water and generates water mist, which is transported to the air duct 25 through the hose 9 and the sleeve 8 and sprayed out through the nozzle 27. In the process of spraying the water mist, the drive shaft 28 drives the drive arm 18 and the air duct 25 to rotate slowly on the outside of the guide port 51. If the geomembrane leaks, negative pressure will be generated at the leak and the water mist will be sucked in. By observing where the water mist is sucked in, the location of the leak can be determined.

[0058] To confirm the accuracy of the test, Figure 5 , 6, 8, 11, 12, an extension rod 52 is fixedly arranged at the other end of the hollow threaded column 54, one end of the extension rod 52 is sleeved with a sealing glass cover 61 and is threadedly connected to the sealing glass cover 61, so that the inside of the sealing glass cover 61 is closed, a camera 60 is fixedly arranged at one end of the extension rod 52, and the camera 60 is used to take pictures and confirm whether there is a leak, and an illumination lamp 59 is fixedly arranged on the inner wall of one side of the sealing glass cover 61 to play a lighting role.

[0059] A hollow shaft 36 is provided inside the driving box 4, one end of the hollow shaft 36 extends to one side of the driving box 4 and is sleeved with a connecting pipe 31, so as to transport soapy water into the hollow shaft 36, the inner wall of the connecting pipe 31 is movably connected to one end of the hollow shaft 36 through a sealed bearing, the connecting pipe 31 is fixed on one side of the driving box 4, the other end of the hollow shaft 36 is movably connected to the inner wall of the other side of the driving box 4 through a bearing, the other end of the hollow shaft 36 is fixedly provided with a clockwork spring 47, one end of the clockwork spring 47 is fixedly connected to the inner wall of the other side of the driving box 4, and the elastic force of the clockwork spring 47 drives the hollow shaft 36 to make it tend to rotate.

[0060] A liquid guide tube 38 is provided at the bottom of the hollow shaft 36, and a plurality of infusion tubes 37 are fixedly provided at the outer end of the liquid guide tube 38. One end of the infusion tube 37 is connected to the hollow shaft 36 to guide soapy water into the liquid guide tube 38. A sponge cover 48 is provided at the outer end of the liquid guide tube 38. A plurality of liquid outlet holes 49 are opened at the outer end of the liquid guide tube 38, and soapy water seeps out through the liquid outlet holes 49 and is applied using the sponge cover 48.

[0061] During the movement of the geomembrane, the clockwork spring 47 is in a tightened state, driving the hollow shaft 36 to rotate, and then driving the infusion tube 37 and the catheter 38, so that the sponge cover 48 at the outer end of the catheter 38 contacts the geomembrane during the movement. At the same time, soapy water is input into the hollow shaft 36 through the connecting tube 31, and the soapy water flows into the catheter 38 through the infusion tube 37 and seeps out through the liquid outlet 49 at the outer end of the catheter 38. Under the action of the sponge cover 48, it is smeared on the geomembrane before detection. Once the geomembrane leaks, the outside air is sucked into the inner tube 50 through the leak, and the soapy water will cause bubbles to form inside the leak. At this time, the camera 60 inside the sealed glass cover 61 is used to shoot from the inside of the inner tube 50 to observe whether bubbles appear inside the leak, so as to confirm the accuracy of the test result and further confirm the location of the leak.

[0062] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A geomembrane joint vacuum detection device for reservoir engineering construction, comprising a base (1), characterized in that: A second bracket (16) is fixedly provided at the top of the base (1), an inner tube (50) is provided inside the second bracket (16), two ends of the inner tube (50) are respectively fixedly connected to the inner walls of both sides of the second bracket (16), two outer tubes (10) are sleeved on the outer end of the inner tube (50) and are movably connected to the outer tubes (10) through sealing bearings, a baffle (26) is fixedly provided at the outer end of the outer tube (10), a cylindrical isolation net (11) is provided between the two outer tubes (10), two ends of the cylindrical isolation net (11) are respectively fixedly connected to one end of the two outer tubes (10), the cylindrical isolation net (11) is provided at the outer end of the inner tube (50), a third sealing gasket (58) is inlaid at the outer end of the inner tube (50), the outer end of the third sealing gasket (58) is in contact with the inner walls of the outer tube (10) and the cylindrical isolation net (11), and a conducting port (51) is provided at the outer end of the inner tube (50), the conducting port (51) is located on the inner side of the cylindrical isolation net (11); A liquid outlet hole (49) is fixedly provided at one end of the inner tube (50), the liquid outlet hole (49) extends to one side of the second bracket (16), and an air pump (24) is fixedly provided on the liquid outlet hole (49); A drive box (4) is fixedly provided on the top of the base (1); a top cover (5) is provided on the top of the drive box (4) and is connected to the top cover (5) by bolts; a control panel (3) is fixedly provided on one side of the drive box (4); a barometer and a timer are fixedly provided on the control panel (3); A motor (2) is fixedly mounted on one side of the drive box (4), and two lower rollers (22) and two upper rollers (23) are arranged inside the drive box (4); two ends of the lower rollers (22) and the upper rollers (23) are movably connected to inner walls of two sides of the drive box (4) via bearings, and one end of the output shaft of the motor (2) extends into the interior of the drive box (4) and is fixedly connected to one end of one of the lower rollers (22); A hollow threaded column (54) is provided inside the inner tube (50), and two air holes (53) are provided at the outer end of the hollow threaded column (54); one end of the hollow threaded column (54) extends to the other side of the second bracket (16) and is fixedly provided with a fixing plate (17); a mounting tube (55) is fixedly provided on the inner wall of one side of the inner tube (50); the mounting tube (55) is sleeved on the outer end of the hollow threaded column (54) and is connected to the hollow threaded column (54) by means of threads; A cross bar (56) is provided inside the hollow threaded column (54); both ends of the cross bar (56) are fixedly connected to the inner wall of the hollow threaded column (54); a second spring (62) is fixedly provided at the outer end of the cross bar (56); a second sealing block (63) is fixedly provided at one end of the second spring (62); a fourth sealing gasket (64) is fixedly provided at one side of the second sealing block (63); the outer ends of the second sealing block (63) and the fourth sealing gasket (64) are in contact with the inner wall of the hollow threaded column (54); a first electrode sheet (29) is inlaid at the outer end of the second sealing block (63); a second electrode sheet (57) is inlaid on the inner wall of the hollow threaded column (54); and the first electrode sheet (29) and the second electrode sheet (57) are electrically connected to a timer on the control panel (3).

2. The geomembrane joint vacuum detection device for reservoir engineering construction according to claim 1 is characterized in that: The outer ends of the lower roller (22) and the upper roller (23) are both fixedly provided with second anti-skid pads (41), the second anti-skid pads (41) at the outer ends of the two lower rollers (22) are in contact with each other, and the second anti-skid pads (41) at the outer ends of the two upper rollers (23) are in contact with each other; A pressure plate (39) is provided inside the driving box (4); a first anti-skid pad (40) is provided at the bottom end of the pressure plate (39) and is connected to the first anti-skid pad (40) by bolts; the first anti-skid pad (40) contacts a second anti-skid pad (41) at the outer end of one of the upper rollers (23); a threaded rod (34) is provided at the top end of the pressure plate (39) and is movably connected to one end of the threaded rod (34) by a bearing; the other end of the threaded rod (34) extends to the top of the top cover (5) and is connected to the top cover (5) by threads; a lever is fixedly provided at the other end of the threaded rod (34); two guide rods (35) are fixedly provided at the top end of the pressure plate (39); one end of the guide rod (35) extends to the top of the top cover (5).

3. The geomembrane joint vacuum detection device for reservoir engineering construction according to claim 1 is characterized in that: Two first brackets (6) are provided inside the drive box (4), and two sides of the first brackets (6) are movably connected to the inner walls of the drive box (4) on both sides through slide rails. A fastening roller (7) is provided inside the first bracket (6), and two ends of the fastening roller (7) are movably connected to the inner walls of the first bracket (6) on both sides through bearings. A slide groove (32) is provided on one side of the drive box (4), and a connecting plate (33) is fixedly provided on one side of the first bracket (6). One end of the connecting plate (33) extends to one side of the drive box (4) through the slide groove (32) and is fixedly provided with an insertion rod (19). A sealing tube (21) is provided on one side of the drive box (4), and the sealing tube (21) is made of high-strength glass. Two mounting plates (20) are fixedly provided at the outer end of the sealing tube (21), and one end of the mounting plate (20) is connected to the drive box (4). One end of the two insertion rods (19) extends into the sealing tube (21). A first spring (46) is fixedly provided at one end of the insertion rod (19), and a first sealing block (42) is fixedly provided at one end of the first spring (46). The first sealing block (42) ), the outer ends of the first sealing block (42) and the second sealing gasket (43) are in contact with the inner wall of the sealing tube (21), two limiting rods (45) are provided between the two first sealing blocks (42), both ends of the limiting rods (45) are fixedly connected to the inner wall of the sealing tube (21), an exhaust pipe (44) is fixedly provided at the outer end of the sealing tube (21), a valve is fixedly provided on the exhaust pipe (44), and the exhaust pipe (44) is arranged between the two limiting rods (45).

4. The geomembrane joint vacuum detection device for reservoir engineering construction according to claim 1 is characterized in that: A fixed shaft (12) is provided inside the second bracket (16), the fixed shaft (12) being arranged at the bottom of the outer tube (10), the two ends of the fixed shaft (12) being movably connected to the inner walls of the second bracket (16) at both sides via an electric rotating shaft, a connecting arm (15) being fixedly provided at the outer end of the fixed shaft (12), an arc-shaped sealing plate (14) being fixedly provided at one end of the connecting arm (15), and a first sealing gasket (30) being fixedly provided on the inner side of the arc-shaped sealing plate (14).

5. The geomembrane joint vacuum detection device for reservoir engineering construction according to claim 1 is characterized by: A driving shaft (28) is provided on the fixed plate (17) and is movably connected to one end of the driving shaft (28) via an electric rotating shaft; a driving arm (18) is fixedly provided at the other end of the driving shaft (28); an air guide tube (25) is fixedly provided at one end of the driving arm (18); the air guide tube (25) is provided at the top of the outer tube (10); and a plurality of nozzles (27) are fixedly provided at the outer end of the air guide tube (25); One end of the air guide tube (25) is sleeved with a sleeve (8) and is movably connected to the sleeve (8) via a sealing bearing; a hose (9) is fixedly provided at the outer end of the sleeve (8); an atomizer (13) is provided at the rear side of the base (1); one end of the hose (9) is connected to the atomizer (13).

6. The geomembrane joint vacuum detection device for reservoir engineering construction according to claim 1 is characterized by: An extension rod (52) is fixedly provided at the other end of the hollow threaded column (54); a sealing glass cover (61) is sleeved on one end of the extension rod (52) and is connected to the sealing glass cover (61) via a thread; a camera (60) is fixedly provided at one end of the extension rod (52); and an illumination lamp (59) is fixedly provided on the inner wall of one side of the sealing glass cover (61).

7. The geomembrane joint vacuum detection device for reservoir engineering construction according to claim 1 is characterized by: A hollow shaft (36) is provided inside the drive box (4); one end of the hollow shaft (36) extends to one side of the drive box (4) and is sleeved with a connecting pipe (31); an inner wall of the connecting pipe (31) is movably connected to one end of the hollow shaft (36) via a sealed bearing; the connecting pipe (31) is fixedly arranged on one side of the drive box (4); the other end of the hollow shaft (36) is movably connected to the inner wall of the other side of the drive box (4) via a bearing; a spring spring (47) is fixedly arranged on the other end of the hollow shaft (36); one end of the spring spring (47) is fixedly connected to the inner wall of the other side of the drive box (4).

8. The geomembrane joint vacuum detection device for reservoir engineering construction according to claim 7 is characterized by: A liquid guide tube (38) is provided at the bottom of the hollow shaft (36), a plurality of liquid infusion tubes (37) are fixedly provided at the outer end of the liquid guide tube (38), one end of the liquid infusion tube (37) is connected to the hollow shaft (36), a sponge sleeve (48) is provided at the outer end of the liquid guide tube (38), and a plurality of liquid outlet holes (49) are opened at the outer end of the liquid guide tube (38).

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