Sealing device for impermeability detection

Abstract

The utility model discloses a sealing device for impermeability detection. The sealing device comprises a base, a sealing wall detachably covering the base and a test block located in the sealing wall, the inner side of the lower end of the sealing wall is tightly attached to the outer wall of the base, a test cavity is formed between the interior of the sealing wall and the base, and the test block is placed on the base; the sealing wall comprises a second movable part, a first movable part and an elastic body. The inner side of the lower half portion of the first movable part and the outer side of the second movable part are attached and can slide mutually. The lower half part of the elastomer is fixed with the inner side of the second movable part; the upper half part of the elastomer is fixed with the inner side of the upper half part of the first movable part; the upper half part of the first movable part, the top of the second movable part and the elastic body jointly define a closed cavity; when water is injected into the closed chamber, the size of the closed chamber is changed to drive the elastomer to deform, so that the elastomer is attached to the side wall of the test block; and a test port is communicated with the test chamber. The utility model has the characteristics of good sealing performance, long service life and strong practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-seepage detection, in particular to a sealing device used for anti-seepage detection. Background Art

[0002] The anti-seepage test is to test the waterproof performance of the tested piece, which is usually used to evaluate durability and reliability, and then determine the design and construction plan of the materials and structures related to the tested piece. Among them, using test blocks as the tested pieces to conduct concrete anti-seepage performance tests plays an important role in detecting the density and anti-seepage performance of concrete. The test block anti-seepage test measures the ability of test blocks to penetrate water under a certain pressure by artificially making test blocks, thereby evaluating the quality and performance of concrete. The test block anti-seepage test can effectively detect the permeability and durability of concrete, which is of great significance for ensuring the safety and reliability of engineering construction.

[0003] At present, there are two main types of anti-seepage equipment, one using manual detection and the other using automated detection. The current manual anti-seepage testing equipment mainly uses primitive methods such as applying butter on the outer surface of the specimen and tightening the sealing ring to seal, which is time-consuming and labor-intensive, and often results in sealing failure and leakage. Most fully automatic anti-seepage testing equipment uses compressed elastomers to extrude the specimen for sealing. This form of sealing saves time and effort, and has significantly improved sealing effects compared to the primitive methods. However, due to the non-standard production process of anti-seepage specimens, the sizes of anti-seepage specimens are inconsistent. In order to meet the needs of different customers, within a certain allowable range, the size of the sealing cavity must be much larger than the smallest specimen. At this time, the sealing effect is difficult to achieve the sealing effect of the largest specimen, which in turn affects the detection accuracy. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide a sealing device for anti-seepage detection with good sealing performance, long service life and strong practicality.

[0005] Technical solution: The sealing device for anti-seepage detection described in the utility model comprises a base, a detachable sealing wall covering the base, and a test block located in the sealing wall, wherein the inner side of the lower end of the sealing wall is in close contact with the outer wall of the base, and a test chamber is formed between the inside of the sealing wall and the base, and the test block is placed on the base;

[0006] The sealing wall includes a second movable part, a first movable part and an elastic body, the inner side of the lower half of the first movable part fits with the outer side of the second movable part and can slide against each other; the lower half of the elastic body is fixed to the inner side of the second movable part, and the upper half of the elastic body is fixed to the inner side of the upper half of the first movable part; the upper half of the first movable part, the top of the second movable part and the elastic body together form a closed chamber;

[0007] A sealing port is provided to communicate with the closed chamber, and is used to change the size of the closed chamber when water is injected into the closed chamber, thereby driving the elastic body to deform and making the elastic body fit the side wall of the test block; a test port is provided to communicate with the test chamber, and is used to inject water into the test chamber.

[0008] Furthermore, the test port is arranged on the base; and the sealing port is arranged on the side wall of the first movable part.

[0009] Furthermore, the sealing device also includes a first layer plate, and a fixed plate extends circumferentially from the outer wall of the first movable part. The first layer plate is placed on the fixed plate. When the first layer plate is kept stationary and the size of the closed chamber is changed, the first movable part is kept stationary, so that the elastomer drives the second movable part to slide up and down.

[0010] Furthermore, the upper end of the elastic body is bent to form a first fixed portion fixed to the first movable portion, and the lower end is bent to form a second fixed portion fixed to the second movable portion.

[0011] Furthermore, the cross-sections of the first fixing portion and the second fixing portion are T-shaped or U-shaped.

[0012] Furthermore, the sealing device also includes an upper pressure plate and a lower pressure plate, the upper pressure plate circumferentially covers the upper end of the first movable part, and the first fixed part is embedded from the intersection of the upper pressure plate and the first movable part; the lower pressure plate circumferentially covers the lower end of the second movable part, and when completely sealed, the inner wall of the lower pressure plate is tightly attached to the outer wall of the base, and the second fixed part is embedded from the intersection of the lower pressure plate and the second movable part.

[0013] Furthermore, the sealing wall also includes a pressure cover, which covers the upper pressure plate and is fixed to the upper end of the first movable part at the lower surface of the pressure cover.

[0014] Furthermore, the sealing wall also includes a first sealing ring and a second sealing ring; a first sealing ring is circumferentially arranged on the upper end of the outer wall of the second movable part, and the first sealing ring completely seals the inner wall of the first movable part and the outer wall of the second movable part through interference fit; the sealing ring also includes a second sealing ring, and a second sealing ring is circumferentially arranged on the inner wall of the lower pressure plate, and the second sealing ring completely seals the inner wall of the lower pressure plate and the outer wall of the base through interference fit.

[0015] Furthermore, a water filter platform is arranged along the circumference of the base, the upper surface of the water filter platform is lower than the upper surface of the base, and a drainage port is arranged on the water filter platform to connect the gap between the inner wall of the lower pressure plate and the outer wall of the base.

[0016] Furthermore, the sealing device also includes a second layer of plate, and the base is placed on the second layer of plate.

[0017] Beneficial effects: The utility model has the following significant effects: 1. The utility model has good sealing performance: The utility model sets an elastic body and utilizes the expansion and contraction characteristics of the elastic body material to make the test chamber a chamber with adjustable size. By injecting water into the sealing port, the size of the closed chamber is changed to adjust the expansion and contraction of the elastic body, so that the side wall of the test chamber formed by the inner wall of the elastic body is closely fitted with the side wall of the test block, reducing the gap between the test chamber and the test piece, so that the water injected during the anti-permeability test does not enter between the test piece and the side wall of the test chamber to cause water loss, and has a good sealing effect; in addition, the sealing ring is set at the first movable part The utility model also provides a sealing ring on the inner wall of the lower pressure plate, so that after the sealing wall covers the base to form a test chamber, the water in the test chamber will not flow out along the gap between the outer wall of the base and the lower pressure plate, and the test effect is also very good; 2. Long service life: the utility model provides a sealing port, and when sealing is required, water is injected into the closed chamber to stretch the elastic body, and the test is carried out after the sealing is completed. ; When not testing, the water in the closed chamber is drained to keep the elastomer in a free and unstretched state, which shortens the stretching time of the elastomer and has a good service life; 3. Strong practicality: The utility model sets a closed chamber and a test chamber to change the size of the closed chamber. Based on the principle that the volume of the elastomer remains unchanged, the circumference of the elastomer decreases when it stretches; the circumference of the elastomer expands when it retracts; the inner wall of the elastomer is closely fitted to the side wall of the test block through the change of the circumference and the height, which ensures the sealing performance while solving the problem of adapting to test blocks of different sizes, and has strong practicality; in addition, the utility model In order to improve the detection accuracy and prevent the poor sealing between the base and the lower pressure plate, a water filter platform with a drain port is set around the base, so that the height of the water filter platform is lower than the height of the base, so that after the sealing of the lower pressure plate and the base is completed, the drain port can receive the water generated from the test chamber and flowing out through the gap between the lower pressure plate and the base. This can detect the sealing of the second sealing ring. If the sealing is poor and water seeps out, the position needs to be inspected and repaired until the sealing is good before testing again; the sealing of the device can be controlled by controlling the movement of the first layer of the plate. When it is realized by the machine, automatic sealing can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structural diagram of the sealing device;

[0019] Figure 2 It is an overall structural diagram with a first layer board and a second layer board;

[0020] Figure 3 It is a front cross-sectional view of the sealing device structure with the test block installed;

[0021] Figure 4It is a rear cross-sectional view of the sealing device structure without the test block installed;

[0022] Figure 5 It is a schematic diagram of the state where the sealing wall and the base are separated;

[0023] Figure 6 This is a schematic diagram when the sealing wall and the base just come into contact;

[0024] Figure 7 It is a schematic diagram of the sealing state between the sealing wall and the base;

[0025] Figure 8 It is a schematic diagram of the contact between the base and the side wall in a sealed state;

[0026] Fig. 9 Schematic diagram of the contact between the base and the side wall in a non-sealed state.

[0027] In the figure, 1 is the first movable part, 2 is the second movable part, 3 is the elastic body, 4 is the pressure cover, 5 is the upper pressure plate, 6 is the lower pressure plate, 7 is the first sealing ring, 8 is the second sealing ring, 9 is the sealing port, 10 is the test port, 11 is the base, 12 is the second layer plate, 13 is the first layer plate, 14 is the drain port, 15 is the test block, 16 is the water filter table, 17 is the sealing wall, 18 is the test chamber, 19 is the closed chamber, 20 is the first fixed part, 21 is the second fixed part, and 22 is the fixed plate. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations.

[0029] See also Figure 1 , Figure 3 , Figure 4 As shown, the utility model discloses a sealing device for anti-seepage detection.

[0030] The sealing device for anti-seepage detection comprises a base 11, a detachable sealing wall 17 covering the base 11, and a test block 15 located in the sealing wall 17, wherein the inner side of the lower end of the sealing wall 17 is in close contact with the outer wall of the base 11, and a test chamber 18 is formed between the inside of the sealing wall 17 and the base 11, and the test block 15 is placed on the base 11; wherein the sealing wall 17 comprises a second movable part 2, a first movable part 1 and an elastic body 3, wherein the inner side of the lower half of the first movable part 1 is in contact with the outer side of the second movable part 2 and can slide against each other; the elastic body The lower half of the elastic body 3 is fixed to the inner side of the second movable part 2, and the upper half of the elastic body 3 is fixed to the inner side of the upper half of the first movable part 1; the upper half of the first movable part 1, the top of the second movable part 2 and the elastic body 3 together form a closed chamber 19; a sealing port 9 is provided to communicate with the closed chamber 19, and is used to change the size of the closed chamber 19 when water is injected into the closed chamber 19, so as to drive the elastic body 3 to deform and make the elastic body 3 fit the side wall of the test block; a test port 10 is provided to communicate with the test chamber 18, and is used to inject water into the test chamber 18.

[0031] In the utility model, the second movable part 2 and the first movable part 1 are connected to form a whole through the connection of the elastic body 3, and the whole can make limited movements in both the height and circumference directions. On the basis of ensuring sealing and simplicity, the test port 10 is set on the base 11; the sealing port 9 is set on the side wall of the first movable part 1. In this embodiment, the base 11, the sealing wall 17, and the test block 15 are all truncated cones. When testing test blocks 15 of different shapes, the sealing device proposed in the utility model can also adopt a shape corresponding to the test block 15.

[0032] In the sealing wall 17, specifically, the upper end of the elastic body 3 is bent to form a first fixed portion 20, and the lower end is bent to form a second fixed portion 21. And the first fixed portion 20 is embedded in and fixed to the first movable portion 1, and the second fixed portion 21 is embedded in and fixed to the second movable portion 2. In this embodiment, the cross-section of the first fixed portion 20 and the second fixed portion 21 is T-shaped, and can also be a U-shaped shape that is easy to embed and fix. On the basis of the above, in order to ensure the stability and sealing of the device, the first fixed portion 20 and the second fixed portion 21 are more fixed to the corresponding first movable portion 1 and the second movable portion 2, and an upper pressure plate 5 and a lower pressure plate 6 are set on the sealing wall 17. The upper pressing plate 5 circumferentially covers the upper end of the first movable part 1, and the first fixing part 20 is embedded from the intersection of the upper pressing plate 5 and the first movable part 1; similarly, the lower pressing plate 6 circumferentially covers the lower end of the second movable part 2, and when completely sealed, the inner wall of the lower pressing plate 6 is tightly attached to the outer wall of the base 11, and the second fixing part 21 is embedded from the intersection of the lower pressing plate 6 and the second movable part 2. Specifically, the upper pressing plate 5 and the first movable part 1, the lower pressing plate 6 and the second movable part 2 are fixed by bolts.

[0033] In order to strengthen the sealing performance of the sealing wall 17, the sealed chamber 19 and the test chamber 18 and avoid leakage of the sealing and test pressure, a first sealing ring 7 and a second sealing ring 8 are also provided in the sealing wall 17. Among them, the first sealing ring 7 is provided along the circumferential direction on the upper end of the outer wall of the second movable part 2, and the first sealing ring 7 completely seals the inner wall of the first movable part 1 and the outer wall of the second movable part 2 through interference fit, so that the sealed chamber 19 is completely sealed. When water is injected, the second movable part 2 moves up and down relative to the first movable part 1, and no water enters the gap between the side walls of the first movable part 1 and the second movable part 2; the sealing ring also includes a second sealing ring 8, and the second sealing ring 8 is provided along the circumferential direction on the inner wall of the lower pressing plate 6, and the second sealing ring 8 completely seals the inner wall of the lower pressing plate 6 and the outer wall of the base 11 through interference fit, so that the test chamber 18 is completely sealed. When water is injected, the lower pressing plate 6 moves up and down relative to the outer wall of the base 11, and no water enters the gap between the lower pressing plate 6 and the outer wall of the base 11. Specifically, in this embodiment, grooves are arranged circumferentially on the upper end of the outer wall of the second movable part 2 and the inner wall of the lower pressure plate 6, and the sealing rings are embedded in the corresponding grooves, so that the lips of the first sealing ring 7 and the second sealing ring 8 are in close contact with the inner wall of the first movable part 1 and the outer wall of the base 11, thereby achieving sealing.

[0034] In order to prevent the second sealing ring 8 from being damaged and unable to perform the sealing function during movement, and water flows out from the test chamber 18 through the gap between the outer wall of the base 11 and the inner wall of the lower pressure plate 6, the utility model sets a water filter platform 16 along the circumference of the base 11, and the upper surface of the water filter platform 16 is lower than the upper surface of the base 11. A drain port 14 is set on the water filter platform 16 to connect the gap between the inner wall of the lower pressure plate 6 and the outer wall of the base 11. The leaked water is drained through the drain port 14. At the same time, this design can also perform a sealing test on the test chamber 18. If water is discharged from the drain port 14, the sealing of the test chamber 18 is not good, and it is necessary to check and replace parts. If no water is discharged from the drain port 14, the sealing of the test chamber 18 meets the requirements, and a sealing test can be performed in the test chamber 18.

[0035] In addition, the sealing wall 17 also includes a pressure cover 4, which covers the upper pressure plate 5 and is fixed to the upper end of the first movable part 1 on the lower surface of the pressure cover 4. In this embodiment, the upper surface of the first movable part 1 is axially divided into two parts, and a part close to the test chamber 19 is attached to the lower surface of the upper pressure plate 5 and the first fixing part partially embedded in the upper end of the first movable part 1 is fixed. The other part of the upper surface of the first movable part 1 away from the test chamber 19 is fixed to the lower surface of the pressure cover to enhance the stability of the structure. In this embodiment, the utility model pressure cover 4 can be used to connect with other detection devices to facilitate diversified detection. At the same time, the pressure cover 4 is fixed to the upper end of the first movable part 1, and the stability of the structure of the first movable part 1 can also be ensured. Specifically, the pressure cover 4 is connected and fixed to the first movable part 1 by bolts.

[0036] See also Figure 1 and Figure 2 As shown, in order to facilitate the up and down movement of the sealing wall 17 and enhance the sealing performance of the test chamber, a first layer plate 13 is further provided in the sealing device, and a fixing plate 22 is circumferentially extended from the outer wall of the first movable part 1. The first layer plate 13 is placed on the fixing plate 22. When the first layer plate 13 is kept stationary and the size of the sealed chamber 19 is changed, the first movable part 1 is kept stationary, so that the elastic body 3 drives the second movable part 2 to slide up and down. This structure can ensure that when the elastic body 3 is extended or retracted, the elastic body 3 is prevented from driving the first movable part 1 to slide up and down, and only the elastic body 3 drives the second movable part 2 to slide up and down, thereby increasing the contact height between the bottom of the sealing wall 17 and the side of the base 11 and enhancing the sealing performance of the structure. When there is no pressure inside the sealed chamber 19, the first plate 13 is moved up and down to drive the sealing wall 17 to move synchronously; the first plate 13 is moved upward to drive the sealing wall 17 away from the base 11, and then the test block 15 is placed in the test chamber 18; the first plate 13 is moved downward to drive the sealing wall 17 close to the base 11, and then the test chamber 18 is sealed. In order to facilitate the fixing of the base 11, the utility model sets a second plate 12 in the sealing device, and the base 11 and the water filter 16 are placed on the second plate 12, which is conducive to the stability of the structure.

[0037] See also Figures 5 to 9As shown, the anti-seepage detection method implemented based on the sealing device proposed by the utility model includes: installing the test block: moving the sealing wall 17 away from the base 11, placing the test block 15 on the base 11, and then moving the sealing wall 17 close to the base 11 to form a test chamber 18; sealing the test chamber: injecting water from the sealing port 9 into the closed chamber 19, maintaining the first movable part 1 immobile, so that the closed chamber 19 expands and pushes the second movable part 2 to move downward until the inner side of the lower end of the sealing wall 17 is close to the outer wall of the base 11; based on the principle of constant volume of the elastomer, the closed chamber 19 expands and stretches the elastomer 3, so that the elastomer 3 collapses circumferentially, driving the inner wall of the elastomer 3 to fit the outer wall of the test block 15; detection test: injecting water from the test port 10 into the test chamber 18, and closing the test port 10 after the water wraps the bottom of the test block 15; after a period of time, check whether there are water marks on the upper surface of the test block 15. If there are water marks, the anti-seepage property of the test block is poor, otherwise, the anti-seepage property is good. In the utility model, the elastic body 3 begins to deform after the test piece is loaded, which is more conducive to compatibility with anti-seepage test blocks of different sizes, and can be tightly fitted with the test block 15 along the circumferential direction to achieve the best sealing effect. Since the elastic body 3 is tightly fitted with the outer wall of the test block 15, the possibility of the test water pressure penetrating from the side is eliminated, and the test water pressure can only penetrate upward from the core of the test block 15. When the pressure drops due to penetration or slight water leakage, the test port 10 will automatically open to replenish the pressure of the test chamber 19, and the test port 10 will be closed after the pressure replenishment is completed. After that, the water seepage on the upper surface of the test block 15 can be checked by a detection device or manually. When using a detection device, the detection device is combined with the upper pressure plate 5 to detect whether water marks appear on the upper surface of the test block 15 in real time during the test process. Within the specified time range, after the detection device detects the result, the test can be stopped in real time to determine whether the anti-seepage performance of the test block 15 is qualified. If no water marks are detected within the specified time range, the anti-seepage performance of the test block 15 is qualified. Otherwise, the anti-seepage performance of the test block 15 is unqualified.

[0038] In addition, on the basis of setting the drain port 14, the sealing chamber 19 can be tested for sealing after the sealing is completed, and the experimenter can be reminded to replace the vulnerable and consumable parts as needed. Under such testing conditions, the testing effect is better and the accuracy is higher.

[0039] After the first plate 13 is set, the sealing wall 17 is moved by moving the first plate 13. The specific process is as follows: Install the test block: After the first plate 13 drives the sealing wall 17 to rise to a position, the test block 15 is placed on the base 11, and the first plate 13 is lowered to complete the loading of the test block 15.

[0040] Sealed test chamber: The sealing water pressure enters the closed chamber 19 between the first movable part 1, the second movable part 2 and the elastomer 3 through the sealing port 9. Under the action of the water pressure, the second movable part 2 drives the lower pressure plate 6 to move downward, so that the second sealing ring 8 contacts and presses the side wall of the base 11 to complete the sealing of the test chamber 18. At the same time, the lower end of the elastomer 3 also moves downward with the second movable part 2. According to the principle that the volume of the elastomer remains unchanged, after being stretched in the height direction, the elastomer 3 will shrink and become smaller in the circumferential direction. At this time, for large-sized test blocks, the inner wall of the elastomer 3 will be tightly attached to the anti-seepage test block, and for small-sized test blocks, the gap between the inner wall of the elastomer 3 and the small-sized test block will become smaller. After the lower pressure plate 6 moves into place, the sealing water pressure will compress the elastomer 3 in the circumferential direction. At this time, regardless of the size of the test piece, the elastomer 3 will fit closely with it, and the sealing is completed.

[0041] Detection test: After the closed chamber 19 automatically completes the sealing of the impermeability test block 15, the test water pressure enters the test chamber 18 through the test port 10 on the base 11. Due to the close contact of the elastomer 3, the test water pressure can only be isolated on the lower surface of the test block 15. Inject water into the test chamber 19 from the test port 10, and close the test port 10 after the water wraps the bottom of the test block 15; check whether there are water marks on the upper surface of the test block 15. If there are water marks, the impermeability of 15 is poor, otherwise, the impermeability is good, and the impermeability test is completed accordingly. After the test is completed, the sealing water pressure is emptied through the sealing port 9, the elastomer 3 returns to normal, the first layer 13 is raised, and the test block 15 is removed.

Claims

1. A sealing device for anti-seepage detection, characterized in that: The sealing device comprises a base, a detachable sealing wall covering the base, and a test block located in the sealing wall, wherein the inner side of the lower end of the sealing wall is in close contact with the outer wall of the base, a test chamber is formed between the inside of the sealing wall and the base, and the test block is placed on the base; The sealing wall includes a second movable part, a first movable part and an elastic body, the inner side of the lower half of the first movable part fits with the outer side of the second movable part and can slide against each other; the lower half of the elastic body is fixed to the inner side of the second movable part, and the upper half of the elastic body is fixed to the inner side of the upper half of the first movable part; the upper half of the first movable part, the top of the second movable part and the elastic body together form a closed chamber; A sealing port is provided to communicate with the closed chamber, and is used to change the size of the closed chamber when water is injected into the closed chamber, thereby driving the elastic body to deform and making the elastic body fit the side wall of the test block; a test port is provided to communicate with the test chamber, and is used to inject water into the test chamber.

2. The sealing device for anti-seepage detection according to claim 1, characterized in that: The test port is arranged on the base; the sealing port is arranged on the side wall of the first movable part.

3. The sealing device for anti-seepage detection according to claim 1, characterized in that: The sealing device also includes a first layer plate, and a fixed plate is extended circumferentially from the outer wall of the first movable part. The first layer plate is placed on the fixed plate. When the first layer plate is kept stationary and the size of the closed chamber is changed, the first movable part is kept stationary, so that the elastic body drives the second movable part to slide up and down.

4. The sealing device for anti-seepage detection according to claim 3, characterized in that: The upper end of the elastic body is bent to form a first fixed portion which is fixed to the first movable portion, and the lower end is bent to form a second fixed portion which is fixed to the second movable portion.

5. The sealing device for anti-seepage detection according to claim 4, characterized in that: The cross-sections of the first fixing portion and the second fixing portion are T-shaped or U-shaped.

6. The sealing device for anti-seepage detection according to claim 4 or 5, characterized in that: The sealing device also includes an upper pressure plate and a lower pressure plate. The upper pressure plate circumferentially covers the upper end of the first movable part, and the first fixed part is embedded from the intersection of the upper pressure plate and the first movable part; the lower pressure plate circumferentially covers the lower end of the second movable part, and when completely sealed, the inner wall of the lower pressure plate is tightly attached to the outer wall of the base, and the second fixed part is embedded from the intersection of the lower pressure plate and the second movable part.

7. The sealing device for anti-seepage detection according to claim 6, characterized in that: The sealing wall further comprises a pressure cover, which is covered on the upper pressure plate and is fixed to the upper end of the first movable part at the lower surface of the pressure cover.

8. The sealing device for anti-seepage detection according to claim 6, characterized in that: The sealing wall also includes a first sealing ring and a second sealing ring; a first sealing ring is circumferentially arranged on the upper end of the outer wall of the second movable part, and the first sealing ring completely seals the inner wall of the first movable part and the outer wall of the second movable part through interference fit; the sealing ring also includes a second sealing ring, and a second sealing ring is circumferentially arranged on the inner wall of the lower pressure plate, and the second sealing ring completely seals the inner wall of the lower pressure plate and the outer wall of the base through interference fit.

9. The sealing device for anti-seepage detection according to claim 8, characterized in that: A water filter platform is arranged along the circumference of the base, the upper surface of the water filter platform is lower than the upper surface of the base, and a drainage port is arranged on the water filter platform to communicate with the gap between the inner wall of the lower pressure plate and the outer wall of the base.

10. The sealing device for anti-seepage detection according to claim 1, characterized in that: The sealing device also includes a second layer of plate, and the base is placed on the second layer of plate.

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