Device for measuring permeability coefficient of plastic diaphragm wall of reservoir

Abstract

The utility model discloses a reservoir plastic diaphragm wall permeability coefficient measuring device which comprises a detection box, a fixed frame is fixedly connected to the rear portion in the detection box, a movable frame with a sealing effect is slidably connected to the front portion in the detection box, and movable rods are fixedly connected to the periphery of the front face of the movable frame. The top end of the moving rod penetrates through the front face of the detection box and is fixedly connected with a push plate. According to the utility model, the forward and reverse motor is arranged to drive the screw rod to rotate and drive the push plate connected with the screw block, so that the moving rod pushes the moving frame to slide in the detection box, and the device can adapt to diaphragm walls with different thicknesses and specifications; the pressure, humidity and water pressure conditions of the diaphragm wall are monitored in real time, and the effects that diaphragm walls with different thicknesses can be fixedly detected, the detection cost is reduced, the detection efficiency is improved, and use is convenient for a user are achieved.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, specifically to a device for measuring the permeability coefficient of a plastic anti-seepage wall in a reservoir. Background Technology

[0002] Water conservancy projects refer to engineering projects constructed to mitigate water-related disasters and develop and utilize water resources. Based on their service objectives, they are categorized into flood control projects, farmland irrigation projects, hydropower projects, waterway and port projects, water supply and drainage projects, environmental water conservancy projects, and coastal reclamation projects. Water conservancy projects that simultaneously serve multiple purposes such as flood control, water supply, irrigation, and power generation are called comprehensive utilization water conservancy projects. Water conservancy projects require the construction of various types of hydraulic structures, including dams, dikes, spillways, sluices, intakes, canals, ferries, raft channels, and fishways, to achieve their objectives.

[0003] Cutoff walls, as a type of continuous wall constructed in loose permeable layers or earth-rock dams to prevent seepage, are widely used in water conservancy and hydropower projects both domestically and internationally due to their advantages such as reliable structure, good seepage prevention effect, adaptability to various geological conditions, simple construction, and low cost. In reservoir projects, the permeability coefficient of plastic cutoff walls is a key indicator for evaluating their seepage prevention performance. However, most existing testing devices can only test cutoff walls of specific thicknesses and specifications. During the design and construction of different reservoirs, plastic cutoff walls will adopt different thicknesses and specifications according to actual project needs. When it is necessary to test cutoff walls of different thicknesses and specifications, the existing devices are difficult to adjust flexibly to adapt to these changes, often requiring the replacement of different testing equipment. This not only increases testing costs but also reduces testing efficiency.

[0004] Therefore, it needs to be modified so that adjustable fixing mechanisms can be set up to fix and test seepage barriers of different thicknesses, reducing testing costs, improving testing efficiency, and making it more convenient for users. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a device for measuring the permeability coefficient of a plastic seepage barrier wall in a reservoir. This device has the advantages of being able to perform fixed testing on seepage barriers of different thicknesses by setting an adjustable fixing mechanism, thereby reducing testing costs, improving testing efficiency, and being convenient for users. It solves the problems of existing testing devices being inconvenient to adjust flexibly, requiring the replacement of different equipment when testing seepage barriers of different thicknesses, increasing testing costs, and affecting testing efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for determining the permeability coefficient of a plastic seepage barrier wall in a reservoir, comprising a testing box, a fixed frame fixedly connected to the rear of the testing box, a sliding frame with a sealing effect slidably connected to the front of the testing box, moving rods fixedly connected to all four sides of the front of the moving frame, the top of the moving rods penetrating to the front of the testing box and fixedly connected to a push plate, a groove being formed in the center of the push plate, and a screw block being fixedly connected inside the groove, a screw rod being threadedly connected inside the screw block, the rear end of the screw rod being rotatably connected to the front of the testing box, and a... The test chamber has a forward and reverse motor. A booster pump is connected to the front left side of the test chamber. The input end of the booster pump is connected to a water supply pipe. A sealing cover is movably connected to the top of the test chamber by bolts. A sealing gasket is fixedly connected to the bottom of the sealing cover. The bottom of the sealing gasket is in contact with the top of the fixed frame and the moving frame. The four sides of the surface of the sealing gasket are in contact with the four sides of the inner wall of the test chamber. A pushing mechanism is set at the rear of the inner wall of the test chamber. A pressure sensing module is fixedly connected to the upper front of the pushing mechanism. A humidity detection module is fixedly connected to the lower part of the pushing mechanism. A water pressure detection module is fixedly connected to the lower front side of the inner wall of the test chamber.

[0007] In a preferred embodiment of this invention, the pushing mechanism includes a damping rod fixedly connected to the rear side of the inner wall of the detection box. A vertical plate is fixedly connected to the front end of the damping rod. A compression spring is sleeved on the surface of the damping rod. The rear end of the compression spring is fixedly connected to the rear of the inner wall of the detection box. The front end of the compression spring is fixedly connected to the front of the vertical plate. The rear side of the pressure sensing module is fixedly connected to the upper part of the front of the vertical plate. The rear side of the humidity detection module is fixedly connected to the lower part of the front of the vertical plate.

[0008] In a preferred embodiment of this invention, a first sealing ring is fixedly connected to the front of the fixed frame, and a second sealing ring that cooperates with the first sealing ring is fixedly connected to the back of the movable frame.

[0009] As a preferred embodiment of this utility model, T-shaped blocks with sealing effect are fixedly connected to the upper and lower sides of the left and right sides of the movable frame, and T-shaped grooves that cooperate with the T-shaped blocks are opened on the upper and lower sides of the left and right sides of the inner wall of the detection box. The surface of the T-shaped block is slidably connected to the inner wall of the T-shaped groove.

[0010] As a preferred embodiment of this invention, a sealing piston ring is slidably connected to the surface of the movable rod, and the surface of the sealing piston ring is fixedly connected to the inner wall of the detection box.

[0011] As a preferred embodiment of this invention, a speed reducer is fixedly connected to the output end of the forward and reverse motor, and the output end of the speed reducer is fixedly connected to the front end of the screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a forward and reverse motor to drive a screw to rotate, which in turn drives a push plate connected to the screw block. This, in turn, causes a moving rod to push a moving frame to slide within the testing chamber. This allows the device to adapt to seepage barriers of different thicknesses and specifications. By incorporating a booster pump, a pressure sensing module, a humidity detection module, and a water pressure detection module, the booster pump supplies water to the testing chamber through a water supply pipeline and pressurizes it, simulating different water pressure environments to comprehensively test the seepage performance of the seepage barrier. Each detection module monitors the pressure, humidity, and water pressure of the seepage barrier in real time and transmits the data to a display. A sealing cover is movably connected to the testing chamber via bolts, and the sealing gasket at the bottom of the sealing cover fits against the top of the fixed frame and the moving frame, while its surface is fitted against the inner wall of the testing chamber. This sealing design effectively prevents water leakage during the testing process, ensuring the stability and sealing of the testing environment, and improving the accuracy of the test results. This achieves the effect of fixed testing of seepage barriers of different thicknesses, reducing testing costs, improving testing efficiency, and facilitating user operation.

[0014] 2. This utility model, through the coordinated use of a damping rod, a vertical plate, and a compression spring, allows the damping rod and compression spring to move the vertical plate forward when the seepage barrier is being tested. This enables the pressure sensing module and the humidity detection module to fit against the back of the seepage barrier, ensuring that these two modules stably acquire the pressure and humidity information of the seepage barrier and avoiding deviations in the detection data due to vibration or unstable movement. This improves the reliability and stability of the detection data. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the right-side structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the left sectional view of the present invention;

[0018] Figure 4 This is a frontal sectional view of the present invention.

[0019] In the diagram: 1. Detection box; 2. Fixed frame; 3. Moving frame; 4. Moving rod; 5. Push plate; 6. Screw block; 7. Screw; 8. Forward and reverse motor; 9. Booster pump; 10. Water supply pipe; 11. Sealing cover; 12. Sealing gasket; 13. Pushing mechanism; 14. Pressure sensing module; 15. Humidity detection module; 16. Water pressure detection module; 17. Damping rod; 18. Vertical plate; 19. Compression spring; 20. First sealing ring; 21. Second sealing ring; 22. T-block; 23. T-groove; 24. Sealing piston ring; 25. Reducer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 4 As shown, this utility model provides a device for measuring the permeability coefficient of a plastic seepage barrier wall in a reservoir. It includes a testing box 1, a fixed frame 2 fixedly connected to the rear of the testing box 1, and a sliding frame 3 with a sealing effect slidably connected to the front of the testing box 1. Moving rods 4 are fixedly connected to all four sides of the front of the moving frame 3. The top of the moving rods 4 extends through to the front of the testing box 1 and is fixedly connected to a push plate 5. A groove is formed in the center of the push plate 5, and a screw block 6 is fixedly connected inside the groove. A screw rod 7 is threaded inside the screw block 6. The rear end of the screw rod 7 is rotatably connected to the front of the testing box 1, and a forward / reverse motor 8 is provided at the front end of the screw rod 7. A booster pump 9 is connected to the front left side of the testing box 1, and a water supply pipe 10 is connected to the input end of the booster pump 9. A sealing cover 11 is movably connected to the top of the testing box 1 by bolts. A sealing gasket 12 is fixedly connected to the bottom. The bottom of the sealing gasket 12 is in contact with the top of the fixed frame 2 and the moving frame 3. The four sides of the surface of the sealing gasket 12 are in contact with the four sides of the inner wall of the detection box 1. A pushing mechanism 13 is provided at the rear of the inner wall of the detection box 1. A pressure sensing module 14 is fixedly connected to the upper front of the pushing mechanism 13. A humidity detection module 15 is fixedly connected to the lower side of the pushing mechanism 13. A water pressure detection module 16 is fixedly connected to the lower front side of the inner wall of the detection box 1. A display is provided on the left side of the front of the push plate 5. A controller is provided on the right side of the front of the push plate 5. The controller is electrically connected to the booster pump 9 and the forward and reverse motor 8 respectively. The display is electrically connected to the pressure sensing module 14, the humidity detection module 15 and the water pressure detection module 16 respectively. Drain valve pipes are connected to the lower right front and the lower back of the detection box 1.

[0022] refer to Figure 3 The pushing mechanism 13 includes a damping rod 17 fixedly connected to the rear side of the inner wall of the detection box 1. A vertical plate 18 is fixedly connected to the front end of the damping rod 17. A compression spring 19 is sleeved on the surface of the damping rod 17. The rear end of the compression spring 19 is fixedly connected to the rear of the inner wall of the detection box 1. The front end of the compression spring 19 is fixedly connected to the front of the vertical plate 18. The rear side of the pressure sensing module 14 is fixedly connected to the upper part of the front of the vertical plate 18. The rear side of the humidity detection module 15 is fixedly connected to the lower part of the front of the vertical plate 18.

[0023] As a technical optimization of this utility model, by setting up the damping rod 17, the vertical plate 18 and the compression spring 19 in cooperation, when the seepage barrier wall is being tested, the damping rod 17 and the compression spring 19 drive the vertical plate 18 to move forward, so that the pressure sensing module 14 and the humidity detection module 15 can be in contact with the back of the seepage barrier wall, ensuring that the two modules stably obtain the pressure and humidity information of the seepage barrier wall, and avoiding deviations in the detection data due to vibration or unstable movement, thereby improving the reliability and stability of the detection data.

[0024] refer to Figure 3 The front of the fixed frame 2 is fixedly connected to a first sealing ring 20, and the back of the movable frame 3 is fixedly connected to a second sealing ring 21 that cooperates with the first sealing ring 20.

[0025] As a technical optimization of this utility model, by setting the first sealing ring 20 and the second sealing ring 21 for use together, when the seepage barrier wall to be inspected is fixed, the back of the seepage barrier wall is in contact with the front of the first sealing ring 20, and the front is in contact with the back of the second sealing ring 21, which improves the sealing performance around the seepage barrier wall and avoids water leakage around the seepage barrier wall during testing, thus affecting the testing results.

[0026] refer to Figure 4 The upper and lower sides of the left and right sides of the movable frame 3 are fixedly connected with T-shaped blocks 22 that have a sealing effect. The upper and lower sides of the left and right sides of the inner wall of the detection box 1 are provided with T-shaped grooves 23 that cooperate with the T-shaped blocks 22. The surface of the T-shaped blocks 22 is slidably connected to the inner wall of the T-shaped grooves 23.

[0027] As a technical optimization of this utility model, by setting the T-shaped block 22 and T-shaped groove 23 in cooperation, when the moving frame 3 moves, the T-shaped block 22 and T-shaped groove 23 play a guiding role, making the sliding of the moving frame 3 in the detection box 1 smoother and more stable. This design ensures the accuracy of the moving frame 3 in the adjustment process, avoids the moving frame 3 from deviating or shaking during the sliding process, and ensures the accuracy of the device in fixing the seepage barrier wall.

[0028] refer to Figure 1 A sealing piston ring 24 is slidably connected to the surface of the moving rod 4, and the surface of the sealing piston ring 24 is fixedly connected to the inner wall of the detection box 1.

[0029] As a technical optimization of this utility model, by setting a sealing piston, water is prevented from leaking from the connection between the moving rod 4 and the detection box 1, thereby enhancing the overall sealing of the detection box 1. At the same time, the sealing piston ring 24 does not affect the sliding of the moving rod 4, allowing the moving frame 3 to be adjusted normally, ensuring the sealing and normal operation of the device during the adjustment process, and thus ensuring the accuracy of the test results.

[0030] refer to Figure 1 The output end of the forward and reverse motor 8 is fixedly connected to a reducer 25, and the output end of the reducer 25 is fixedly connected to the front end of the screw 7.

[0031] As a technical optimization of this utility model, the speed of the forward and reverse motors 8 can be reduced by setting the reducer 25, thereby increasing the output torque. This makes the rotation of the screw 7 more stable and precise, avoiding the problem of the moving frame 3 moving too fast due to excessive speed, which would make it difficult to accurately control the force used to fix the seepage barrier. Through the action of the reducer 25, the device can fix the seepage barrier more stably and accurately, providing a reliable guarantee for the detection process and further improving the accuracy and stability of the detection.

[0032] The working principle and usage procedure of this utility model are as follows: In use, open the sealing cover 11, place the sample of the plastic seepage-proof wall to be tested between the fixed frame 2 and the moving frame 3, and then, according to the thickness of the seepage-proof wall, control the rotation direction and speed of the forward and reverse motors 8 via the controller. The forward and reverse motors 8 drive the screw 7 to rotate, causing the push plate 5 and the moving frame 3 to move until the moving frame 3 is tightly fitted with the seepage-proof wall, fixing the seepage-proof wall between the fixed frame 2 and the moving frame 3. Observe the data on the pressure sensor module 14 on the display to ensure the fixing force is appropriate. Then, install the sealing cover 11 on the top of the testing box 1 to seal the top of the seepage-proof wall, start the booster pump 9, and supply water to the testing box 1 through the water supply pipe 10 to pressurize it, simulating different water pressure environments. Meanwhile, observe the water pressure data displayed on the monitor by the water pressure detection module 16, adjust the working state of the booster pump 9 according to the testing requirements, so that the water pressure in the test chamber 1 reaches the required water pressure. During the pressurization process, the pressure sensing module 14, humidity detection module 15 and water pressure detection module 16 monitor the pressure, humidity and water pressure of the seepage barrier wall in real time, and transmit the data to the monitor. The operator closely monitors the data changes on the monitor and records the data at different time points. After the test is completed, turn off the booster pump 9, open the drain valve pipe to drain the water in the test chamber 1, open the sealing cover 11, control the forward and reverse motor 8 to reverse, so that the moving frame 3 returns to the initial position, and then take out the tested seepage barrier wall sample.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the permeability coefficient of a plastic seepage barrier wall in a reservoir, comprising a testing box (1), characterized in that: A fixed frame (2) is fixedly connected to the rear of the inside of the test box (1). A sliding frame (3) with a sealing effect is slidably connected to the front of the inside of the test box (1). A moving rod (4) is fixedly connected to all four sides of the front of the moving frame (3). The top of the moving rod (4) extends through to the front of the test box (1) and is fixedly connected to a push plate (5). A groove is provided in the center of the push plate (5), and a screw block (6) is fixedly connected inside the groove. A screw rod (7) is threaded inside the screw block (6). The rear end of the screw rod (7) is rotatably connected to the front of the test box (1). A forward and reverse motor (8) is provided at the front end of the screw rod (7). A booster pump (9) is connected to the front of the left side of the test box (1). The input end of the test box (1) is connected to a water supply pipe (10). The top of the test box (1) is movably connected to a sealing cover (11) by bolts. The bottom of the sealing cover (11) is fixedly connected to a sealing gasket (12). The bottom of the sealing gasket (12) is in contact with the top of the fixed frame (2) and the moving frame (3). The four sides of the surface of the sealing gasket (12) are in contact with the four sides of the inner wall of the test box (1). A pushing mechanism (13) is provided at the rear of the inner wall of the test box (1). A pressure sensing module (14) is fixedly connected to the top of the front of the pushing mechanism (13). A humidity detection module (15) is fixedly connected to the bottom of the pushing mechanism (13). A water pressure detection module (16) is fixedly connected to the bottom of the front side of the inner wall of the test box (1).

2. The device for determining the permeability coefficient of a plastic seepage barrier wall in a reservoir according to claim 1, characterized in that: The pushing mechanism (13) includes a damping rod (17) fixedly connected to the rear side of the inner wall of the detection box (1). A vertical plate (18) is fixedly connected to the front end of the damping rod (17). A compression spring (19) is sleeved on the surface of the damping rod (17). The rear end of the compression spring (19) is fixedly connected to the rear of the inner wall of the detection box (1). The front end of the compression spring (19) is fixedly connected to the front of the vertical plate (18). The rear side of the pressure sensing module (14) is fixedly connected to the upper part of the front of the vertical plate (18). The rear side of the humidity detection module (15) is fixedly connected to the lower part of the front of the vertical plate (18).

3. The device for determining the permeability coefficient of a plastic seepage barrier wall in a reservoir according to claim 1, characterized in that: The front of the fixed frame (2) is fixedly connected to a first sealing ring (20), and the back of the movable frame (3) is fixedly connected to a second sealing ring (21) that works in conjunction with the first sealing ring (20).

4. The device for determining the permeability coefficient of a plastic seepage barrier wall in a reservoir according to claim 1, characterized in that: The upper and lower sides of the left and right sides of the movable frame (3) are fixedly connected with T-shaped blocks (22) that have a sealing effect. The upper and lower sides of the left and right sides of the inner wall of the detection box (1) are provided with T-shaped grooves (23) that cooperate with the T-shaped blocks (22). The surface of the T-shaped blocks (22) is slidably connected to the inner wall of the T-shaped grooves (23).

5. The device for determining the permeability coefficient of a plastic seepage barrier wall in a reservoir according to claim 1, characterized in that: A sealing piston ring (24) is slidably connected to the surface of the moving rod (4), and the surface of the sealing piston ring (24) is fixedly connected to the inner wall of the detection box (1).

6. The device for determining the permeability coefficient of a plastic seepage barrier wall in a reservoir according to claim 1, characterized in that: The output end of the forward and reverse motor (8) is fixedly connected to a reducer (25), and the output end of the reducer (25) is fixedly connected to the front end of the screw (7).

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