Geomembrane fixing device and fixing method

Abstract

The application discloses a geomembrane fixing device and fixing method. The geomembrane fixing device comprises a detection frame, an upper frame arranged above the detection frame, a plurality of vertical shafts connecting the upper frame and the detection frame, a frame type sealing seat arranged at the top of the frame of the detection frame, a water injection hole arranged on the frame type sealing seat, sealing seat lifting mechanisms arranged on the two sides of the detection frame and connected with the frame type sealing seat, and a geomembrane pressing block arranged above the frame type sealing seat and connected with a pressing block lifting mechanism arranged on the upper frame. The geomembrane fixing device and fixing method are simple and convenient to operate, and can stably and reliably form a sealed pressure measuring space for the upper and lower two layers of geomembranes.

Description

Technical Field

[0001] This invention relates to the field of geomembrane quality testing technology, and more specifically, to a geomembrane fixing device and fixing method for an automatic geomembrane testing system for hydraulic engineering. Background Technology

[0002] Composite geomembranes are made by bonding geomembranes and geotextiles together at high temperatures. During the manufacturing process, uneven heating can easily lead to localized deformation and damage of the geomembrane. Furthermore, these defects are often difficult to detect manually, and there is currently no reliable testing equipment available. When using equipment to detect defects in geomembranes, securing the geomembrane is a crucial step before testing. Therefore, there is a need to develop a simple, convenient, stable, and reliable geomembrane fixing device. Summary of the Invention

[0003] The main objective of this invention is to provide a geomembrane fixing device and fixing method. The geomembrane fixing device and fixing method are simple and convenient to operate, and can stably and reliably form a sealed pressure measuring space between the upper and lower geomembranes.

[0004] To achieve the above objectives, according to one aspect of the present invention, a geomembrane fixing device is provided, the geomembrane fixing device comprising:

[0005] The detection frame has an upper frame on top, which is connected to the detection frame by multiple vertical shafts.

[0006] A frame-type sealing seat is set on the top of the frame of the detection frame. The two sides of the detection frame are equipped with sealing seat lifting mechanisms, which are connected to the frame-type sealing seat.

[0007] The geomembrane clamping block is set above the frame-type sealing seat. The upper frame is equipped with a clamping block lifting mechanism, which is connected to the geomembrane clamping block.

[0008] Furthermore, the frame-type sealing seat is connected to multiple diagonal bracing rods, which are connected to each other inside the frame-type sealing seat to form a mesh-like diagonal bracing structure. The diagonal bracing rods are hollow square rods.

[0009] Furthermore, sealing grooves are provided on both the upper and lower sides of the frame-type sealing seat, and sealing strips are embedded in the sealing grooves, with the sealing strips protruding from the opening of the sealing grooves.

[0010] Furthermore, the sealing seat lifting mechanism includes a sealing seat lifting cylinder. Multiple sealing seat lifting cylinders are installed on both sides of the detection frame, and the piston rod of the sealing seat lifting cylinder is connected to the frame-type sealing seat.

[0011] Furthermore, the sealing seat lifting mechanism also includes lifting springs. Multiple lifting springs are installed on both sides of the detection frame, and one end of the lifting spring is connected to the frame-type sealing seat.

[0012] Furthermore, the clamping block lifting mechanism includes multiple clamping block lifting cylinders installed on the upper frame, and the piston rods of the clamping block lifting cylinders are connected to the geomembrane clamping blocks.

[0013] Furthermore, the testing frame is equipped with multiple transverse beams and multiple longitudinal beams. The transverse beams and longitudinal beams intersect each other to form multiple pressure testing zones inside the testing frame. A middle clamping block is provided above the longitudinal beams. A middle clamping cylinder is provided on the upper frame above the middle clamping block. The middle clamping cylinder is connected to the middle clamping block.

[0014] Furthermore, the geomembrane fixing device also includes a hydraulic circuit system, which includes a hydraulic oil supply device. The discharge end of the hydraulic oil supply device is connected to a first solenoid directional valve, which is connected to multiple sealing seat lifting cylinders through multiple first diverting and combining valves. The discharge end of the hydraulic oil supply device is also connected to a second solenoid directional valve, which is connected to multiple pressing block lifting cylinders through multiple second diverting and combining valves. The discharge end of the hydraulic oil supply device is also connected to a third solenoid directional valve, which is connected to multiple intermediate pressing cylinders through multiple third diverting and combining valves.

[0015] Furthermore, the first electromagnetic directional valve includes a first sealing seat lifting directional valve and a second sealing seat lifting directional valve, which are respectively connected to the discharge end of the hydraulic oil supply device; the first sealing seat lifting directional valve is connected to multiple sealing seat lifting cylinders near the end of the detection frame through multiple first diverting and combining valves; the second sealing seat lifting directional valve is connected to multiple sealing seat lifting cylinders in the middle through multiple first diverting and combining valves.

[0016] According to another aspect of the present invention, a method for fixing a geomembrane is provided, wherein the geomembrane is fixed using the aforementioned geomembrane fixing device, the method comprising:

[0017] Insert the geomembrane from one end of the testing frame into the space between the testing frame and the frame-type sealing seat; then pass the geomembrane around the frame-type sealing seat from the other end of the testing frame; finally, insert the geomembrane between the frame-type sealing seat and the geomembrane clamping block.

[0018] The frame-type sealing seat is lowered by the sealing seat lifting mechanism, pressing the frame-type sealing seat and the lower geomembrane onto the testing frame; the geomembrane pressing block is lowered by the pressing block lifting mechanism, pressing the geomembrane pressing block and the upper geomembrane onto the frame-type sealing seat; thus, a sealed pressure testing space is formed between the geomembrane between the testing frame and the frame-type sealing seat and between the geomembrane between the frame-type sealing seat and the geomembrane pressing block.

[0019] The intermediate clamping block is driven to descend by the intermediate clamping cylinder, which divides the pressure measuring space into multiple interconnected small pressure measuring chambers.

[0020] Furthermore, the frame-type sealing seat is lowered by the sealing seat lifting mechanism, pressing the frame-type sealing seat and the geomembrane located below onto the testing frame. Specifically, this means:

[0021] First, the ends of the frame-type sealing seats are lowered by multiple sealing seat lifting cylinders near the end of the testing frame, pressing the geomembrane located in the lower layer onto the testing frame; then, the frame-type sealing seats and the geomembrane located in the lower layer are further pressed onto the testing frame by multiple sealing seat lifting cylinders in the middle.

[0022] By applying the technical solution of this invention, a detection frame, a frame-type sealing seat, and a geomembrane clamping block are set up. The frame-type sealing seat is placed at the top of the frame edge of the detection frame, and a water injection hole is opened on the frame-type sealing seat. A sealing seat lifting mechanism is set up and connected to the frame-type sealing seat. The geomembrane clamping block is placed above the frame-type sealing seat, and a clamping block lifting mechanism is set up and connected to the geomembrane clamping block. When fixing the geomembrane, the geomembrane is first sent from one end of the detection frame between the detection frame and the frame-type sealing seat. Then, the geomembrane is sent from the other end of the detection frame, around the frame-type sealing seat, and into the space between the frame-type sealing seat and the geomembrane clamping block. The sealing seat lifting mechanism drives the frame-type sealing seat to descend, pressing the lower geomembrane onto the detection frame. The clamping block lifting mechanism drives the geomembrane clamping block to descend, pressing the upper geomembrane onto the frame-type sealing seat. This creates a sealed pressure testing space between the upper and lower geomembrane layers. This geomembrane fixing device is simple and convenient to operate, and can stably and reliably form a sealed pressure testing space between the upper and lower geomembrane layers. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 This is a side view of the geomembrane fixing device according to an embodiment of the present invention.

[0025] Figure 2 for Figure 1A magnified view of a portion of point A in the middle.

[0026] Figure 3 This is a schematic diagram of the end structure of the geomembrane fixing device according to an embodiment of the present invention (when the geomembrane clamping block rises).

[0027] Figure 4 for Figure 3 A magnified view of a section at point B.

[0028] Figure 5 This is a schematic diagram of the end structure of the geomembrane fixing device according to an embodiment of the present invention (when the geomembrane clamping block descends).

[0029] Figure 6 for Figure 5 A magnified view of a section at point C.

[0030] Figure 7 This is a top view of the upper frame, vertical shaft, pressing block lifting mechanism, and intermediate pressing cylinder in the geomembrane fixing device according to an embodiment of the present invention.

[0031] Figure 8 This is a top view of the frame-type sealing seat, horizontal diaphragm beam, longitudinal diaphragm beam, and diagonal brace in the geomembrane fixing device according to an embodiment of the present invention.

[0032] Figure 9 for Figure 8 A magnified view of a section at point D.

[0033] Figure 10 This is a side view of the frame-type sealing seat in the geomembrane fixing device according to an embodiment of the present invention.

[0034] Figure 11 This is a top view of the frame-type sealing seat in the geomembrane fixing device according to an embodiment of the present invention.

[0035] Figure 12 This is a cross-sectional view of the frame-type sealing seat in the geomembrane fixing device according to an embodiment of the present invention.

[0036] Figure 13 This is a side view of the intermediate clamping block in the geomembrane fixing device according to an embodiment of the present invention.

[0037] Figure 14 This is a cross-sectional view of the intermediate clamping block in the geomembrane fixing device according to an embodiment of the present invention.

[0038] Figure 15 This is a top view of the intermediate clamping block in the geomembrane fixing device according to an embodiment of the present invention.

[0039] Figure 16 This is a schematic diagram of the connection structure of the detection frame, frame-type sealing seat and geomembrane clamping block in the geomembrane fixing device of this embodiment of the invention.

[0040] Figure 17 This is a cross-sectional view of the frame-type sealing seat in the geomembrane fixing device according to an embodiment of the present invention.

[0041] Figure 18 This is a schematic diagram of the longitudinal diaphragm beam and the intermediate clamping block in the geomembrane fixing device according to an embodiment of the present invention.

[0042] Figure 19 This is a schematic diagram of the hydraulic circuit system in the geomembrane fixing device according to an embodiment of the present invention.

[0043] Figure 20 This is a side view of the automatic detection system using the geomembrane fixing device according to an embodiment of the present invention.

[0044] The above figures include the following reference numerals:

[0045] 10. Detection frame; 11. Upper frame; 12. Vertical shaft; 13. Sealing seat lifting mechanism; 14. Pressing block lifting mechanism; 15. Geomembrane feeding shaft; 16. Geomembrane return shaft; 17. Horizontal diaphragm; 18. Longitudinal diaphragm; 20. Frame-type sealing seat; 21. Water injection hole; 22. Sealing groove; 23. Sealing strip; 24. Diagonal brace; 30. Geomembrane pressing block; 40. Geomembrane take-up and take-down power unit; 41. Base; 42. Geomembrane feeding roller; 43. Geomembrane take-up roller; 50. Intermediate pressing block; 60. Intermediate clamping cylinder; 70. First diversion and combination valve; 80. Second solenoid directional valve; 90. Second diversion and combination valve; 100. Third solenoid directional valve; 110. Third diversion and combination valve; 120. First sealing seat lifting directional valve; 130. Second sealing seat lifting directional valve; 131. Sealing seat lifting cylinder; 132. Lifting spring; 140. Oil tank; 141. Clamping block lifting cylinder; 150. Axial piston pump; 160. Solenoid relief valve; 170. Oil filter; 200. Geomembrane. Detailed Implementation

[0046] To facilitate understanding of the present invention, a more comprehensive and detailed description of the invention will be provided below in conjunction with the accompanying drawings and preferred embodiments. However, the scope of protection of the present invention is not limited to the specific embodiments described below. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0047] Unless otherwise defined, all technical terms used below have the same meaning as commonly understood by those skilled in the art. The terms "first," "second," and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely for the purpose of distinguishing corresponding components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "connected" or "linked," etc., are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0048] See Figures 1 to 19 This invention discloses a geomembrane fixing device, which is mainly used in an automatic geomembrane detection system for hydraulic engineering projects to fix the geomembrane 200. The geomembrane fixing device mainly includes a detection frame 10, a frame-type sealing seat 20, and a geomembrane clamping block 30. The system includes an upper frame 11 located above the detection frame 10, which is connected to the detection frame 10 via multiple vertical shafts 12; a frame-type sealing seat 20 located at the top of the frame of the detection frame 10, with a water injection hole 21 on it; and sealing seat lifting mechanisms 13 located on both sides of the detection frame 10, which are connected to the frame-type sealing seat 20 and used to drive the frame-type sealing seat 20 to rise or fall; and a geomembrane pressing block 30 located above the frame-type sealing seat 20, with a pressing block lifting mechanism 14 installed on the upper frame 11, which is connected to the geomembrane pressing block 30 and used to drive the geomembrane pressing block 30 to rise or fall.

[0049] The aforementioned geomembrane fixing device comprises a detection frame 10, a frame-type sealing seat 20, and a geomembrane clamping block 30. The frame-type sealing seat 20 is positioned at the top of the frame of the detection frame 10, with a water injection hole 21 on it. A sealing seat lifting mechanism 13 is connected to the frame-type sealing seat 20. The geomembrane clamping block 30 is positioned above the frame-type sealing seat 20, and a clamping block lifting mechanism 14 is connected to it. To fix the geomembrane 200, it is first inserted through one end of the detection frame 10 between the detection frame 10 and the frame-type sealing seat 20. Then, the geomembrane 200 is passed around the other end of the detection frame 10 and inserted between the frame-type sealing seat 20 and the geomembrane clamping block 30. The frame-type sealing seat 20 is lowered by the sealing seat lifting mechanism 13, pressing the lower geomembrane 200 onto the testing frame 10; the geomembrane pressing block 30 is lowered by the pressing block lifting mechanism 14, pressing the upper geomembrane 200 onto the frame-type sealing seat 20; thus forming a sealed pressure testing space between the upper and lower geomembrane 200 layers. During testing of the geomembrane 200, water is injected into the pressure testing space formed by the two geomembrane layers 200 through the water injection hole 21. Once the set water pressure is reached in the sealed space, water injection is stopped, and the water pressure in the pressure testing space is checked for a decrease over time. If the water pressure remains stable, it indicates that there is no damage to the geomembrane 200 in the tested area; if the water pressure decreases, it indicates that there is damage to the geomembrane 200 in the tested area. This geomembrane fixing device is simple and convenient to operate, and can stably and reliably form a sealed pressure testing space between the upper and lower geomembrane layers 200.

[0050] Specifically, see Figure 1 In this embodiment, the sealing seat lifting mechanism 13 includes sealing seat lifting cylinders 131. Six of these sealing seat lifting cylinders 131 are installed on each side of the detection frame 10, and the piston rods of the sealing seat lifting cylinders 131 are connected to the frame-type sealing seat 20. The six cylinders on each side, totaling twelve cylinders, jointly drive the frame-type sealing seat 20 to rise or fall. When the frame-type sealing seat 20 rises, a gap is formed between the frame-type sealing seat 20 and the detection frame 10 for the geomembrane 200 to be inserted. When the frame-type sealing seat 20 falls, the lower geomembrane can be pressed tightly onto the detection frame 10 by the frame-type sealing seat 20.

[0051] Furthermore, in this embodiment, the sealing seat lifting mechanism 13 also includes a lifting spring 132. Multiple lifting springs 132 are installed on both sides of the detection frame 10, with one end of each spring 132 connected to the frame-type sealing seat 20. When the frame-type sealing seat 20 is in a free state (i.e., the sealing seat lifting cylinder 131 does not drive the frame-type sealing seat 20 to rise or fall), the lifting spring 132 is in a compressed state, creating a certain gap between the frame-type sealing seat 20 and the detection frame 10. This arrangement makes it easier to insert the geomembrane 200 between the frame-type sealing seat 20 and the detection frame 10 without needing to lift the frame-type sealing seat 20 using the sealing seat lifting cylinder 131.

[0052] Specifically, see Figure 3 , Figure 5 and Figure 7 In this embodiment, the pressing block lifting mechanism 14 includes multiple pressing block lifting cylinders 141 mounted on the upper frame 11. The piston rods of the pressing block lifting cylinders 141 are connected to the geomembrane pressing block 30. When the upper geomembrane 200 is inserted between the geomembrane pressing block 30 and the frame sealing seat 20, the multiple pressing block lifting cylinders 141 drive the geomembrane pressing block 30 to descend, pressing the upper geomembrane 200 onto the frame sealing seat 20. In this way, a seal can be achieved between the upper geomembrane 200 and the upper edge of the frame sealing seat 20, and the upper and lower geomembranes 200 are respectively sealed and fitted to the upper and lower edges of the frame sealing seat 20, forming a sealed pressure testing space for water injection between the upper and lower geomembranes 200.

[0053] See Figure 8 In this embodiment, multiple transverse beams 17 and multiple longitudinal beams 18 are also provided inside the detection frame 10. The multiple transverse beams 17 and longitudinal beams 18 intersect each other to form multiple pressure detection zones inside the detection frame 10. An intermediate clamping block 50 is provided above the longitudinal beams 18. An intermediate clamping cylinder 60 is provided on the upper frame 11 above the intermediate clamping block 50. The intermediate clamping cylinder 60 is connected to the intermediate clamping block 50. Because the testing frame 10 is relatively wide, if the entire interior of the testing frame 10 is used to form a large pressure testing area, the geomembrane 200 will bulge excessively after water is injected. By adopting the above-mentioned configuration, a central clamping block 50 is installed above the longitudinal beam 18. The central clamping block 50 is connected to the upper frame 11 via a central clamping cylinder 60. During use, the central clamping block 50 can be lowered to a certain height by the central clamping cylinder 60 (without compressing the upper and lower geomembrane layers 200), dividing the entire interior of the testing frame 10 into multiple smaller pressure testing zones. This configuration avoids the problem of the geomembrane bulging excessively after water is injected into the pressure testing space formed by the upper and lower geomembrane layers 200.

[0054] See Figure 8In this embodiment, multiple diagonal braces 24 are connected inside the frame-type sealing seat 20. These multiple diagonal braces 24 are connected to form a mesh-like diagonal bracing structure inside the frame-type sealing seat 20. This diagonal bracing structure is located within the pressure measurement space formed by the two layers of geomembrane 200. By setting multiple diagonal braces 24, the structure of the entire frame-type sealing seat 20 is made more stable. Specifically, the diagonal braces 24 can be hollow square rods, seamlessly welded to the inner side of the frame-type sealing seat 20. Using hollow square rods can reduce the weight of the diagonal braces 24.

[0055] See Figure 16 In this embodiment, sealing grooves 22 are provided on both the upper and lower sides of the frame-type sealing seat 20, and sealing strips 23 are embedded in both the upper and lower sealing grooves 22. Furthermore, the sealing strip 23 located on the upper side protrudes from the opening of the upper sealing groove 22, and the sealing strip 23 located on the lower side also protrudes downward from the opening of the lower sealing groove 22. This arrangement can better improve the sealing performance between the upper and lower geomembranes 200 and the upper and lower edges of the frame-type sealing seat 20.

[0056] See Figure 19 In this embodiment, the automatic detection system further includes a hydraulic circuit system, which includes a hydraulic oil supply device. The discharge end of the hydraulic oil supply device is connected to a first solenoid directional valve. The first solenoid directional valve is connected to a plurality of sealing seat lifting cylinders 131 through a plurality of first diversion and combination valves 70. The discharge end of the hydraulic oil supply device is also connected to a second solenoid directional valve 80. The second solenoid directional valve 80 is connected to a plurality of pressing block lifting cylinders 141 through a plurality of second diversion and combination valves 90. The discharge end of the hydraulic oil supply device is also connected to a third solenoid directional valve 100. The third solenoid directional valve 100 is connected to a plurality of intermediate pressing cylinders 60 through a plurality of third diversion and combination valves 110. This configuration, connecting multiple sealing seat lifting cylinders 131 to a first solenoid directional valve via multiple first diversion and combination valves 70, ensures consistent oil volume in the multiple sealing seat lifting cylinders 131, guaranteeing synchronous extension and retraction, which is more conducive to sealing and pressing the lower geomembrane 200 onto the detection frame 10. Similarly, connecting multiple pressing block lifting cylinders 141 to a second solenoid directional valve 80 via multiple second diversion and combination valves 90 ensures consistent oil volume in the multiple pressing block lifting cylinders 141, guaranteeing synchronous lifting and retraction, which is more conducive to sealing and pressing the upper geomembrane 200 onto the frame-type sealing seat 20. Finally, connecting multiple intermediate pressing cylinders 60 to a third solenoid directional valve 100 via multiple third diversion and combination valves 110 ensures consistent oil volume in the multiple intermediate pressing cylinders 60, guaranteeing synchronous extension and retraction.

[0057] Specifically, the hydraulic oil supply device includes an oil tank 140, an axial piston pump 150, and a solenoid relief valve 160. The oil pipe of the axial piston pump 150 is connected to the oil tank 140, and an oil filter 170 is installed on the oil pipe. The axial piston pump 150 is connected to the solenoid relief valve 160 through an oil circuit. A straight-through check valve is installed on the oil circuit, and the oil circuit is connected to the first sealing seat lifting directional valve 120, the second sealing seat lifting directional valve 130, the second solenoid directional valve 80, and the third solenoid directional valve 100.

[0058] Further, see Figure 1 and Figure 19 In this embodiment, the first electromagnetic reversing valve includes a first sealing seat lifting reversing valve 120 and a second sealing seat lifting reversing valve 130. The first sealing seat lifting reversing valve 120 and the second sealing seat lifting reversing valve 130 are respectively connected to the discharge end of the hydraulic oil supply device. The first sealing seat lifting reversing valve 120 is connected to a plurality of sealing seat lifting cylinders 131 near the end of the detection frame 10 through a plurality of first diversion and combination valves 70. The second sealing seat lifting reversing valve 130 is connected to a plurality of sealing seat lifting cylinders 131 in the middle through a plurality of first diversion and combination valves 70. With this configuration, the end sealing seat lifting cylinder 131 near the detection frame 10 and the middle sealing seat lifting cylinder 131 are controlled by different first sealing seat lifting reversing valves 120 and second sealing seat lifting reversing valves 130. The frame sealing seat 20 can be pressed onto the detection frame 10 from the end first, and then the middle part of the frame sealing seat 20 can be pressed onto the detection frame 10 as a whole. In this way, it can be ensured that each corner of the frame sealing seat 20 is pressed steadily onto the detection frame 10, thereby improving the sealing effect of the lower geomembrane 200.

[0059] Specifically, multiple first-level diversion and combination valves 70 are arranged in a tree-like pattern, meaning that the two diversion ports of the previous-level first-level diversion and combination valve 70 are each connected to the hydraulic oil inlet of a next-level first-level diversion and combination valve 70. Similarly, multiple second-level diversion and combination valves 90 and multiple third-level diversion and combination valves 110 are also arranged in a tree-like pattern. This arrangement can effectively improve the consistency of oil volume among the cylinders in the same group, ensure the synchronous lifting and lowering of the cylinders in the same group, and improve the sealing effect of the geomembrane 200.

[0060] The application method of the geomembrane fixing device of the present invention is as follows:

[0061] The geomembrane 200 is inserted from one end of the testing frame 10 into the space between the testing frame 10 and the frame-type sealing seat 20 (forming the lower geomembrane 200). The geomembrane 200 is then inserted from the other end of the testing frame 10 around the frame-type sealing seat 20 and then into the space between the frame-type sealing seat 20 and the geomembrane pressing block 30 (forming the upper geomembrane 200).

[0062] The frame-type sealing seat 20 is lowered by the sealing seat lifting mechanism 13, pressing the frame-type sealing seat 20 and the lower geomembrane 200 onto the detection frame 10; the geomembrane pressing block 30 is lowered by the pressing block lifting mechanism 14, pressing the geomembrane pressing block 30 and the upper geomembrane 200 onto the frame-type sealing seat 20; thus, a sealed pressure measuring space is formed between the geomembrane 200 between the detection frame 10 and the frame-type sealing seat 20 and between the geomembrane 200 between the frame-type sealing seat 20 and the geomembrane pressing block 30.

[0063] Then, the intermediate clamping block 50 is driven down by the intermediate clamping cylinder 60, which divides the pressure measuring space into multiple interconnected small pressure measuring chambers (pressure detection areas), thus completing the fixation of the geomembrane.

[0064] Furthermore, to better ensure that the frame-type sealing seat 20 can be smoothly pressed against the testing frame 10, thereby improving the sealing performance between the lower geomembrane 200 and the frame-type sealing seat 20, during the descent of the frame-type sealing seat 20 driven by the sealing seat lifting mechanism 13, the ends of the frame-type sealing seat 20 are first lowered by multiple sealing seat lifting cylinders 131 near the side end of the testing frame 10, pressing the lower geomembrane 200 against the testing frame 10; then, multiple sealing seat lifting cylinders 131 located in the middle of the side of the testing frame 10 further press the frame-type sealing seat 20 and the lower geomembrane 200 against the testing frame 10. In this way, the four corners of the frame-type sealing seat 20 can be simultaneously pressed against the testing frame 10, ensuring that the frame-type sealing seat 20 smoothly seals and presses the lower geomembrane 200 against the testing frame 10.

[0065] See Figure 20 An automatic geomembrane detection system for hydraulic engineering, employing the geomembrane fixing device of the present invention, includes a geomembrane feeding shaft 15 installed at the front end of the detection frame 10 along its length; and a geomembrane return shaft 16 installed at the rear end of the detection frame 10 along its length. The automatic detection system also includes a geomembrane deployment and retraction power unit 40, which includes a base 41 on which a geomembrane feeding roller 42 and a geomembrane receiving roller 43 are rotatably mounted. A geomembrane discharge motor (not shown in the figure) for driving the geomembrane feeding roller 42 and the geomembrane receiving roller 43 is also provided on the base 41.

[0066] The detection process of the automatic geomembrane detection system for this water conservancy project is as follows:

[0067] After the geomembrane 200 is fixed to form a pressure testing space, water is injected into the sealed pressure testing space formed between the two layers of geomembrane 200 through the water injection hole 21. When the set water pressure is reached in the sealed space, the water injection is stopped, and the water pressure in the pressure testing space is checked to see if it decreases over time. If the water pressure remains stable, it means that there is no damage to the geomembrane 200 in the tested area. If the water pressure drops, it means that there is damage to the geomembrane 200 in the tested area. The location of the damage to the geomembrane 200 can be determined by appropriate means (such as a camera). After testing one area, the geomembrane 200 is wound up by the geomembrane winding and unwinding power unit 40, and the geomembrane 200 for the next tested area is fed in. This process is repeated until all geomembranes 200 are tested.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A geomembrane fixing device, characterized by, The geomembrane fixing device comprises: A detection frame (10) is provided with an upper frame (11) above the detection frame (10), and the upper frame (11) is connected with the detection frame (10) through a plurality of vertical shafts (12); A frame seal seat (20) is arranged at the top of the frame of the detection frame (10), and the two sides of the detection frame (10) are provided with a seal seat lifting mechanism (13) connected with the frame seal seat (20); a water injection hole (21) is formed in the frame seal seat (20); A geomembrane pressing block (30) is arranged above the frame seal seat (20), and a pressing block lifting mechanism (14) is installed on the upper frame (11), and the pressing block lifting mechanism (14) is connected with the geomembrane pressing block (30).

2. The geomembrane fixing device according to claim 1, wherein A plurality of inclined struts (24) are connected in the frame seal seat (20), and the plurality of inclined struts (24) are connected in the frame seal seat (20) to form a network-shaped inclined strut structure, and the inclined struts (24) are hollow square rods; Sealing grooves (22) are formed on the upper and lower sides of the frame seal seat (20), and sealing strips (23) are embedded in the sealing grooves (22), and the sealing strips (23) protrude from the grooves of the sealing grooves (22).

3. The geomembrane anchoring device of claim 1, wherein, The seal seat lifting mechanism (13) comprises a seal seat lifting oil cylinder (131), a plurality of seal seat lifting oil cylinders (131) are installed on the two sides of the detection frame (10), and the piston rod of the seal seat lifting oil cylinder (131) is connected with the frame seal seat (20).

4. The geomembrane anchoring device of claim 3, wherein, The seal seat lifting mechanism (13) further comprises a jacking spring (132), a plurality of jacking springs (132) are installed on the two sides of the detection frame (10), and one end of the jacking spring (132) is connected with the frame seal seat (20).

5. The geomembrane anchoring device of claim 3, wherein The pressing block lifting mechanism (14) comprises a plurality of pressing block lifting oil cylinders (141) installed on the upper frame (11), and the piston rod of the pressing block lifting oil cylinder (141) is connected with the geomembrane pressing block (30).

6. The geomembrane anchoring device of claim 5, wherein, A plurality of cross beams (17) and a plurality of longitudinal beams (18) are arranged in the detection frame (10), the cross beams (17) and the longitudinal beams (18) are staggered in the detection frame (10) to form a plurality of pressure detection areas, an intermediate pressing block (50) is arranged above the longitudinal beams (18), an intermediate pressing oil cylinder (60) is arranged above the intermediate pressing block (50) on the upper frame (11), and the intermediate pressing oil cylinder (60) is connected with the intermediate pressing block (50).

7. The geomembrane anchoring device of claim 6, wherein, The geomembrane fixing device further comprises a hydraulic oil path system, the hydraulic oil path system comprises a hydraulic oil supply device, the outlet end of the hydraulic oil supply device is connected with a first electromagnetic reversing valve, the first electromagnetic reversing valve is connected with a plurality of first shunt and collecting valves (70) through a plurality of first shunt and collecting valves (70) respectively, and the first shunt and collecting valves (70) are connected with a plurality of sealing seat lifting oil cylinders (131) respectively.

8. The geomembrane anchoring device of claim 7, wherein, The first electromagnetic reversing valve comprises a first sealing seat lifting reversing valve (120) and a second sealing seat lifting reversing valve (130), the first sealing seat lifting reversing valve (120) and the second sealing seat lifting reversing valve (130) are connected with the outlet end of the hydraulic oil supply device respectively, the first sealing seat lifting reversing valve (120) is connected with a plurality of sealing seat lifting oil cylinders (131) near the end of the detection frame (10) through a plurality of first shunt and collecting valves (70) respectively, and the second sealing seat lifting reversing valve (130) is connected with a plurality of sealing seat lifting oil cylinders (131) in the middle through a plurality of first shunt and collecting valves (70) respectively.

9. A geomembrane fixing method characterized by, The geomembrane fixing device is used for fixing the geomembrane, and the geomembrane fixing method comprises the following steps: The geomembrane (200) is sent into the detection frame (10) from one end of the detection frame (10) and between the detection frame (10) and the frame-shaped sealing seat (20), the geomembrane (200) is bypassed from the other end of the detection frame (10) and around the frame-shaped sealing seat (20), and then the geomembrane (200) is sent into the frame-shaped sealing seat (20) and between the frame-shaped sealing seat (20) and the geomembrane pressing block (30); The frame-shaped sealing seat (20) and the geomembrane (200) located in the lower layer are pressed on the detection frame (10) by driving the frame-shaped sealing seat (20) to descend through the sealing seat lifting mechanism (13), the geomembrane pressing block (30) and the geomembrane (200) located in the upper layer are pressed on the frame-shaped sealing seat (20) by driving the geomembrane pressing block (30) to descend through the pressing block lifting mechanism (14), and thus the geomembrane (200) located between the detection frame (10) and the frame-shaped sealing seat (20) and the geomembrane (200) located between the frame-shaped sealing seat (20) and the geomembrane pressing block (30) form a sealed pressure measuring space in the middle; The pressure measuring space is divided into a plurality of small pressure measuring cavities in communication by driving the intermediate pressing block (50) to descend through the intermediate pressing cylinder (60).

10. The geomembrane securing method according to claim 9, characterized by The frame seal seat (20) and the geomembrane (200) located below are pressed on the detection frame (10) by driving the frame seal seat (20) to descend through the seal seat lifting mechanism (13). First, the end of the frame seal seat (20) is driven to descend through the seal seat lifting oil cylinder (131) close to the end of the detection frame (10), and the geomembrane (200) located below is pressed on the detection frame (10); then the frame seal seat (20) and the geomembrane (200) located below are further pressed on the detection frame (10) through the seal seat lifting oil cylinder (131) in the middle.

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