CN118564651A - Sealing device for anti-seepage detection and anti-seepage detection method - Google Patents
Sealing device for anti-seepage detection and anti-seepage detection method Download PDFInfo
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- CN118564651A CN118564651A CN202410737626.4A CN202410737626A CN118564651A CN 118564651 A CN118564651 A CN 118564651A CN 202410737626 A CN202410737626 A CN 202410737626A CN 118564651 A CN118564651 A CN 118564651A
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- 238000007789 sealing Methods 0.000 title claims abstract description 143
- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 173
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000003825 pressing Methods 0.000 claims description 30
- 229920001971 elastomer Polymers 0.000 claims description 21
- 239000000806 elastomer Substances 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 13
- 210000004907 gland Anatomy 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/028—Sealings between relatively-stationary surfaces with elastic packing the packing being mechanically expanded against the sealing surface
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a sealing device for impermeability detection and an impermeability detection method. The sealing device comprises a base, a sealing wall which is detachably covered on the base and a test block which is positioned in the sealing wall, wherein the inner side of the lower end of the sealing wall is tightly clung to the outer wall of the base, a test chamber is formed between the inner part 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, wherein the inner side of the lower half part of the first movable part is attached to the outer side of the second movable part and can slide mutually; the lower half part of the elastic body is fixed with the inner side of the second movable part, and the upper half part of the elastic body 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 part of the second movable part and the elastic body jointly enclose a closed cavity; when water is injected into the closed cavity, the size of the closed cavity is changed, and the elastic body is driven to deform, so that the elastic body is attached to the side wall of the test block; and a test port is communicated with the test chamber. The invention has the characteristics of good sealing performance, long service life and strong practicability.
Description
Technical Field
The invention relates to the technical field of anti-seepage detection, in particular to a sealing device for anti-seepage detection and an anti-seepage detection method.
Background
The anti-seepage detection is to detect the waterproof performance of the tested piece, and is generally used for evaluating the durability and the reliability, so as to determine the design and construction scheme adopting the related materials and the structure of the tested piece. The test block is used as a tested piece to perform a concrete impermeability test, and plays an important role in detecting concrete compactness and impermeability. The test block impermeability test is to measure the water permeability under a certain pressure by manually manufacturing the test block, thereby evaluating the quality and performance of the concrete. The test block impermeability test can effectively detect the permeability and durability of concrete, and has important significance for guaranteeing the safety and reliability of engineering construction.
At present, the impervious equipment is mainly divided into two types, one type adopts a manual detection mode and the other type adopts an automatic detection mode. The existing manual anti-seepage detection equipment is mainly sealed in original modes of smearing butter on the outer surface of a test piece, hooping a sealing ring and the like, and is time-consuming and labor-consuming, and the situation that sealing fails and water leaks frequently occurs. Most of the full-automatic anti-seepage detection equipment adopts a compression elastomer to extrude a test piece for sealing, so that the sealing mode is time-saving and labor-saving, and the sealing effect is obviously improved compared with that of the original mode. However, the manufacturing process of the impervious test piece is not standard, so that the sizes of the impervious test pieces are inconsistent, the size of the sealed cavity is far larger than that of the test piece with the minimum size in a certain allowable range in order to meet the demands of different clients, and the sealing effect is difficult to reach the sealing effect of the maximum test piece at the moment, so that the detection precision is influenced.
Disclosure of Invention
The invention aims to: the invention aims to provide a sealing device for anti-seepage detection and an anti-seepage detection method, which have the advantages of good sealing performance, long service life and strong practicability.
The technical scheme is as follows: the invention relates to a sealing device for impervious detection, which comprises a base, a sealing wall detachably covered on the base and a test block positioned in the sealing wall, wherein the inner side of the lower end of the sealing wall is clung to the outer wall of the base, a test chamber is formed between the inner part 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, wherein the inner side of the lower half part of the first movable part is attached to the outer side of the second movable part and can slide mutually; the lower half part of the elastic body is fixed with the inner side of the second movable part, and the upper half part of the elastic body 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 part of the second movable part and the elastic body jointly enclose a closed cavity;
the sealing port is communicated with the closed cavity, and is used for changing the size of the closed cavity when water is injected into the closed cavity, so as to drive the elastic body to deform and enable the elastic body to be adhered to the side wall of the test block; and a test port is communicated with the test chamber and used for injecting water into the test chamber.
Further, the test port is arranged on the base; the sealing opening is arranged on the side wall of the first movable part.
Further, the sealing device further comprises a first layer plate, the outer wall of the first movable part extends out of the fixed plate in the circumferential direction, the first layer plate is placed on the fixed plate, and when the first layer plate is kept motionless and the size of the closed cavity is changed, the first layer plate is used for keeping the first movable part motionless, so that the elastic body drives the second movable part to slide up and down.
Further, the upper end of the elastic body is bent to form a first fixing part which is fixed with the first movable part, and the lower end of the elastic body is bent to form a second fixing part which is fixed with the second movable part.
Further, the cross sections of the first fixing part and the second fixing part are T-shaped or U-shaped.
Further, the sealing device further comprises an upper pressing plate and a lower pressing plate, wherein the upper pressing plate Zhou Xianggai is combined with the upper end of the first movable part, and the first fixed part is embedded from the joint of the upper pressing plate and the first movable part; the lower pressure plate Zhou Xianggai is close to the lower end of the second movable part, and when the lower pressure plate is 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 joint of the lower pressure plate and the second movable part.
Further, the sealing wall further comprises a gland, wherein the gland is covered on the upper pressing plate and is fixed with the upper end of the first movable part on the lower surface of the gland.
Further, the sealing wall further comprises a first sealing ring and a second sealing ring; the upper end of the outer wall of the second movable part is provided with a first sealing ring along the circumferential direction, and the first sealing ring completely seals the inner wall of the first movable part with the outer wall of the second movable part through interference fit; the sealing ring further comprises a second sealing ring, the second sealing ring is arranged on the inner wall of the lower pressing plate along the circumferential direction, and the second sealing ring is used for completely sealing the inner wall of the lower pressing plate and the outer wall of the base through interference fit.
Further, a water filtering table is arranged along the circumference of the base, the upper surface of the water filtering table is lower than the upper surface of the base, and the water filtering table is provided with a water outlet communicated with a gap between the inner wall of the lower pressing plate and the outer wall of the base.
The technical scheme is as follows: the anti-seepage detection method provided by the invention comprises the following steps: and (3) mounting a test block: moving the sealing wall away from the base, placing the test block on the base, and then forming a test chamber by enabling the sealing wall to be close to the base; sealing the test chamber: injecting water into the closed cavity from the sealing port, keeping the first movable part motionless, expanding the closed cavity to push the second movable part to move downwards until the inner side of the lower end of the sealing wall clings to the outer wall of the base; based on the principle that the volume of the elastomer is unchanged, the closed chamber expands to stretch the elastomer, so that the elastomer Zhou Xiangkui contracts to drive the inner wall of the elastomer to be attached to the outer wall of the test block; detection test: injecting water into the test chamber from the test port, and closing the test port after the water wraps the bottom of the test block; checking whether water marks appear on the upper surface of the test block, if so, the test block is poor in impermeability, otherwise, the test block is good in impermeability.
The beneficial effects are that: the invention has the following remarkable effects: 1. the invention has good sealing performance: according to the invention, the elastic body is arranged, the test chamber is made into the chamber with adjustable size by utilizing the expansion and contraction characteristics of the elastic body material, the size of the sealed chamber is driven to change by injecting water into the sealing port, so that the expansion and contraction of the elastic body are regulated, the side wall of the test chamber formed by the inner wall of the elastic body is tightly attached to the side wall of the test block, the gap between the test chamber and the test piece is reduced, and water injected during an anti-seepage test does not enter the space between the test piece and the side wall of the test chamber, so that the water loss is avoided, and a good sealing effect is achieved; in addition, the sealing ring is arranged between the first movable part and the second movable part, so that when the first movable part and the second movable part slide relatively, water in the closed cavity flows into a gap between the first movable part and the second movable part, and the tightness of the closed cavity is improved; the sealing ring is also arranged on the inner wall of the lower pressing plate, so that after the sealing wall covers the base to form a test cavity, water in the test cavity is prevented from flowing out along a gap between the outer wall of the base and the lower pressing plate, and a good sealing effect is achieved; 2. the service life is long: according to the invention, the sealing port is arranged, water is injected into the sealed cavity when sealing is needed, the elastomer is elongated, and a test is performed after sealing is completed; when the test is not performed, the water in the closed cavity is emptied to keep the elastomer in a free and non-stretching state, so that the stretching time of the elastomer is shortened, and the service life is good; 3. the practicability is strong: according to the invention, the size of the closed chamber is changed by arranging the closed chamber and the test chamber, and the circumference is reduced when the elastic body is driven to extend based on the principle that the volume of the elastic body is unchanged; when the elastic body is retracted, the perimeter expands; the circumference and the height are changed, so that the inner wall of the elastic body is tightly attached to the side wall of the test block, the tightness is ensured, the problem of adapting to test blocks with different sizes is solved, and the practicability is high; in addition, in order to improve the detection precision and prevent the situation that the tightness between the base and the lower pressing plate is poor, a water filtering table with a water outlet is arranged on the circumference of the base, so that the height of the water filtering table is lower than that of the base, the water outlet can receive water generated from a test chamber and flowing out from a gap between the lower pressing plate and the base after the sealing between the lower pressing plate and the base is finished, the tightness of the second sealing ring can be detected, and if the tightness is poor, the position needs to be overhauled until the tightness is good, and then the test is carried out; the tightness of the device can be controlled by controlling the movement of the first layer plate, and when the device is realized by a machine, the device can perform automatic sealing.
Drawings
FIG. 1 is an overall construction view of a sealing device;
FIG. 2 is an overall block diagram of a first laminate and a second laminate;
FIG. 3 is a front cross-sectional view of a seal assembly with a test block;
FIG. 4 is a cross-sectional view of the seal without the test block;
FIG. 5 is a schematic view showing a state in which the sealing wall is separated from the base;
FIG. 6 is a schematic view of the seal wall just in contact with the base;
FIG. 7 is a schematic view of the sealing state of the sealing wall and the base;
FIG. 8 is a schematic view of the contact between the base and the sidewall in a sealed state;
Fig. 9 is a schematic view showing the contact between the base and the sidewall in the non-sealing state.
In the figure, 1 is a first movable part, 2 is a second movable part, 3 is an elastic body, 4 is a gland, 5 is an upper press plate, 6 is a lower press plate, 7 is a first seal ring, 8 is a second seal ring, 9 is a seal port, 10 is a test port, 11 is a base, 12 is a second layer plate, 13 is a first layer plate, 14 is a water outlet, 15 is a test block, 16 is a water filtering table, 17 is a sealing wall, 18 is a test chamber, 19 is a closed chamber, 20 is a first fixed part, 21 is a second fixed part, and 22 is a fixed plate.
Detailed Description
The invention is further elucidated below in connection with the drawings and the detailed description.
Referring to fig. 1, 3 and 4, the invention discloses a sealing device for impermeability detection and an impermeability detection method.
The sealing device for the anti-seepage detection comprises a base 11, a sealing wall 17 which is detachably covered on the base 11 and a test block 15 which is positioned in the sealing wall 17, wherein the inner side of the lower end of the sealing wall 17 is tightly attached to the outer wall of the base 11, a test chamber 18 is formed between the inner part of the sealing wall 17 and the base 11, and the test block 15 is placed on the base 11; 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 part of the first movable part 1 is attached to the outer side of the second movable part 2 and can mutually slide; the lower half part of the elastic body 3 is fixed with the inner side of the second movable part 2, and the upper half part of the elastic body 3 is fixed with the inner side of the upper half part of the first movable part 1; the upper half part of the first movable part 1, the top part of the second movable part 2 and the elastic body 3 jointly enclose a closed cavity 19; the sealing port 9 is communicated with the closed cavity 19, and is used for changing the size of the closed cavity 19 when water is injected into the closed cavity 19, so that the elastic body 3 is driven to deform and the elastic body 3 is attached to the side wall of the test block; a test port 10 is provided in communication with the test chamber 18 for filling the test chamber 18 with water.
In the invention, the second movable part 2 and the first movable part 1 are connected into a whole through the connection of the elastic body 3, and the whole can perform limited movement in the height direction and the circumference direction at the same time. On the basis of ensuring tightness and simplicity, a test port 10 is arranged on a base 11; the sealing port 9 is provided in the side wall of the first movable portion 1. In this embodiment, the base 11, the sealing wall 17, and the test block 15 are all truncated cones. When detecting test blocks 15 of different shapes, the sealing device provided by the invention can also adopt the shape corresponding to the test blocks 15.
In the sealing wall 17, specifically, the upper end of the elastic body 3 is bent out of the first fixing portion 20, and the lower end is bent out of the second fixing portion 21. And the first fixing portion 20 is fitted into and fixed to the first movable portion 1, and the second fixing portion 21 is fitted into and fixed to the second movable portion 2. In this embodiment, the cross sections of the first fixing portion 20 and the second fixing portion 21 are T-shaped, or may be U-shaped for easy insertion and fixing. In addition to the above, in order to ensure stability and sealability of the device, the first fixing portion 20 and the second fixing portion 21 are further fixed to the corresponding first movable portion 1 and second movable portion 2, and the upper platen 5 and the lower platen 6 are provided on the seal wall 17. The upper pressing plate 5 circumferentially covers the upper end of the first movable part 1, and the first fixed part 20 is embedded from the joint of the upper pressing plate 5 and the first movable part 1; similarly, the lower end of the second movable portion 2 is disposed around Xiang Gaige of the lower pressure plate 6, and the inner wall of the lower pressure plate 6 is tightly attached to the outer wall of the base 11 when the lower pressure plate is completely sealed, and the second fixing portion 21 is embedded from the junction of the lower pressure plate 6 and the second movable portion 2. Specifically, the upper platen 5 and the first movable portion 1, the lower platen 6 and the second movable portion 2 are fixed by bolting.
In order to strengthen the tightness of the sealing wall 17, the closed chamber 19 and the test chamber 18 and avoid leakage of sealing and test pressure, a first sealing ring 7 and a second sealing ring 8 are also arranged in the sealing wall 17. The upper end of the outer wall of the second movable part2 is provided with a first sealing ring 7 along the circumferential direction, the first sealing ring 7 completely seals the inner wall of the first movable part1 and the outer wall of the second movable part2 through interference fit, so that the closed cavity 19 is completely sealed, and when water is injected, the second movable part2 moves up and down relative to the first movable part1, and no water enters a gap between the side walls of the first movable part1 and the second movable part 2; the sealing ring further comprises a second sealing ring 8, the second sealing ring 8 is arranged on the inner wall of the lower pressing plate 6 along the circumferential direction, the second sealing ring 8 is used for completely sealing 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, and 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 a gap between the lower pressing plate 6 and the outer wall of the base 11. Specifically, in this embodiment, grooves are formed at the upper end of the outer wall of the second movable portion 2 and the inner wall of the lower pressure plate 6 along the circumferential direction, and the sealing rings are embedded into the corresponding grooves, so that the lips of the first sealing ring 7 and the second sealing ring 8 are tightly contacted with the inner wall of the first movable portion 1 and the outer wall of the base 11, thereby realizing sealing.
In order to prevent the second sealing ring 8 from being damaged and the like from realizing the sealing function when moving, water flows out from the test chamber 18 through a gap between the outer wall of the base 11 and the inner wall of the lower pressing plate 6, the invention is provided with the water filtering table 16 along the circumferential direction of the base 11, the upper surface of the water filtering table 16 is lower than the upper surface of the base 11, and the water filtering table 16 is provided with a water outlet 14 communicated with the gap between the inner wall of the lower pressing plate 6 and the outer wall of the base 11. The leaked water is discharged through the drain port 14. At the same time, the design can also detect the tightness of the test chamber 18, if water is discharged from the water outlet 14, the tightness of the test chamber 18 is poor, and the test chamber 18 needs to be checked and parts replaced, and if no water is discharged from the water outlet 14, the tightness of the test chamber 18 meets the requirement, and the tightness detection can be performed in the test chamber 18.
In addition, the sealing wall 17 further comprises a pressing cover 4, wherein the pressing cover 4 is covered on the upper pressing plate 5, and the lower surface of the pressing cover 4 is fixed with the upper end of the first movable part 1. In this embodiment, the upper surface of the first movable portion 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 platen 5 and is fixed to the first fixing portion partially embedded in the upper end of the first movable portion 1. The other part of the upper surface of the first movable part 1 far from the test chamber 19 is fixed with the lower surface of the gland so as to enhance the stability of the structure. In this embodiment, the gland 4 of the present invention may be used to connect with other detecting devices, so as to facilitate diversified detection. Meanwhile, the gland 4 is fixed with the upper end of the first movable part 1, and the stability of the structure of the first movable part 1 can be ensured. Specifically, the gland 4 is fixedly connected with the first movable portion 1 by a bolt.
Referring to fig. 1 and 2, in order to facilitate the up-down movement of the sealing wall 17 and enhance the tightness of the test chamber, a first laminate 13 is further disposed in the sealing device, the outer wall of the first movable portion 1 extends circumferentially beyond the fixed plate 22, the first laminate 13 is disposed on the fixed plate 22, and the first laminate 13 is kept stationary and the size of the closed chamber 19 is changed to keep the first movable portion 1 stationary, so that the elastic body 3 drives the second movable portion 2 to slide up and down. This structure can guarantee when elastomer 3 stretches out and draws back, prevents elastomer 3 to drive first movable part 1 and slide from top to bottom, and only makes elastomer 3 drive second movable part 2 and slide from top to bottom, increases sealing wall 17 bottom and the side contact height of base 11, reinforcing structure's leakproofness. When the interior of the closed cavity 19 is pressureless, the first laminate 13 is moved up and down to drive the sealing wall 17 to move synchronously; moving the first laminate 13 upwards to drive the sealing wall 17 away from the base 11, and then placing the test block 15 into the test chamber 18; the first plate 13 is moved downwards, the sealing wall 17 is brought close to the base 11, and the test chamber 18 is sealed. In order to facilitate fixing the base 11, the invention is provided with the second layer plate 12 in the sealing device, and the base 11 and the water filtering table 16 are placed on the second layer plate 12, thereby being beneficial to the stability of the structure.
Referring to fig. 5 to 9, the present invention further provides a method for detecting impermeability, including: and (3) mounting a test block: moving the sealing wall 17 away from the base 11, placing the test block 15 on the base 11, and then forming a test chamber 18 by placing the sealing wall 17 close to the base 11; sealing the test chamber: injecting water into the closed cavity 19 from the sealing port 9, keeping the first movable part 1 motionless, expanding the closed cavity 19 to push the second movable part 2 to move downwards until the inner side of the lower end of the sealing wall 17 clings to the outer wall of the base 11; based on the principle that the volume of the elastomer is unchanged, the closed chamber 19 expands to stretch the elastomer 3, so that the elastomer 3 is circumferentially collapsed to drive the inner wall of the elastomer 3 to be attached to 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, it is checked whether a water mark appears on the upper surface of the test block 15, if so, the test block is poor in impermeability, otherwise, the test block is good in impermeability. In the invention, the elastic body 3 starts to deform after the test piece is filled, so that the anti-seepage test blocks with different sizes are more compatible, and the elastic body can be tightly attached to the test block 15 along the circumferential direction, thereby achieving the optimal sealing effect. Because elastomer 3 closely laminates with the outer wall of test block 15, stop the possibility that test water pressure permeated from the side, test water pressure can only upwards permeate from test block 15 core. When the pressure drops due to permeation or slight water leakage, the test port 10 is automatically opened to supplement the pressure of the test chamber 19, and the test port 10 is closed after the pressure supplement is completed. The water seepage condition of the upper surface of the test block 15 can then be checked by using a detection device or manually. When the detection device is adopted, the detection device is combined with the upper pressing plate 5, whether water marks appear on the upper surface of the test block 15 or not is detected in real time in the test process, and after the detection device detects the result, the test can be stopped in real time, and whether the impermeability of the test block 15 is qualified or not is judged. If no water mark is detected within a specified time range, the test block 15 is qualified in impermeability. Otherwise, the test block 15 fails in its permeation resistance.
In addition, on the basis of the water outlet 14, the tightness detection of the sealed cavity 19 after the sealing is finished can be carried out, so that an experimenter can be reminded of replacing the fragile and easy-to-consume parts as required. The detection effect under the detection condition is better, and the accuracy is higher.
On the basis of the provision of the first lamina 13, the sealing wall 17 is moved by moving the first lamina 13. The specific process is as follows: and (3) mounting a test block: after the first laminate 13 drives the sealing wall 17 to rise in place, the test block 15 is placed on the base 11, and the first laminate 13 descends in place to finish filling of the test block 15.
Sealing the test chamber: the sealing water pressure enters the airtight chamber 19 between the first movable part 1, the second movable part 2 and the elastic body 3 through the sealing port 9, and under the action of the water pressure, the second movable part 2 drives the lower pressing plate 6 to move downwards, so that the second sealing ring 8 is in contact with the side wall of the base 11 to compress tightly, and the sealing of the test chamber 18 is completed. At the same time, the lower end of the elastic body 3 moves downward along with the second movable portion 2, and after being stretched in the height direction according to the principle that the volume of the elastic body is unchanged, the elastic body 3 is crushed and reduced in the circumferential direction. At this time, for large-sized test blocks, the inner wall of the elastic body 3 will be closely attached to the impervious test block, and for small-sized test blocks, the gap between the inner wall of the elastic body 3 and the small-sized test block will be small. After the lower pressing plate 6 moves in place, the sealing water pressure can compress the elastic body 3 along the circumferential direction, and at the moment, no matter the size of a test piece is tested, the elastic body 3 can be tightly attached to the test piece, and sealing is completed.
Detection test: after the airtight chamber 19 automatically completes the sealing of the impervious test block 15, the test water pressure enters the test chamber 18 through the test port 10 on the base 11, and the test water pressure can only be isolated on the lower surface of the test block 15 due to the close contact of the elastic body 3. Injecting water from the test port 10 into the test chamber 19, and closing the test port 10 after the water wraps the bottom of the test block 15; checking whether water marks appear on the upper surface of the test block 15, if so, testing 15 with poor impermeability, otherwise, good impermeability, and thus completing the impermeability test. After the test is completed, the sealing water pressure is exhausted through the sealing port 9, the elastic body 3 is recovered to be normal, the first laminate 13 is lifted, and the test block 15 is taken away.
Claims (10)
1. The sealing device for the anti-seepage detection is characterized by comprising a base, a sealing wall which is detachably covered on the base and a test block positioned in the sealing wall, wherein the inner side of the lower end of the sealing wall is clung to the outer wall of the base, a test chamber is formed between the inner part 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, wherein the inner side of the lower half part of the first movable part is attached to the outer side of the second movable part and can slide mutually; the lower half part of the elastic body is fixed with the inner side of the second movable part, and the upper half part of the elastic body 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 part of the second movable part and the elastic body jointly enclose a closed cavity;
the sealing port is communicated with the closed cavity, and is used for changing the size of the closed cavity when water is injected into the closed cavity, so as to drive the elastic body to deform and enable the elastic body to be adhered to the side wall of the test block; and a test port is communicated with the test chamber and used for injecting water into the test chamber.
2. The seal for permeation resistant inspection according to claim 1, wherein said test port is provided in a base; the sealing opening is arranged on the side wall of the first movable part.
3. The seal for use in a permeation resistant engine according to claim 1, further comprising a first plate, wherein the first movable portion has an outer wall extending circumferentially beyond a fixed plate, the first plate is placed on the fixed plate to hold the first plate stationary and to change the size of the closed chamber when the first plate is held stationary to hold the first movable portion stationary such that the elastic body moves the second movable portion up and down.
4. A seal assembly for use in permeation resistant testing according to claim 3, wherein said elastomer has an upper end bent out of said first fixed portion and fixed to said first movable portion, and a lower end bent out of said second fixed portion and fixed to said second movable portion.
5. The seal assembly for use in permeation resistant inspection according to claim 4, wherein said first and second securing portions are T-shaped or U-shaped in cross section.
6. The seal assembly for use in an permeation resistant test according to claim 4 or 5, further comprising an upper platen, a lower platen, said upper platen Zhou Xianggai engaging an upper end of a first movable portion, said first stationary portion being embedded from a junction of the upper platen and the first movable portion; the lower pressure plate Zhou Xianggai is close to the lower end of the second movable part, and when the lower pressure plate is 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 joint of the lower pressure plate and the second movable part.
7. The seal assembly for use in a permeation resistant test according to claim 6, wherein said seal wall further comprises a gland, said gland being engaged with said upper platen and secured to an upper end of said first movable portion at a lower surface of said gland.
8. The seal for a permeation resistant test according to claim 6, wherein said seal wall further comprises a first seal ring and a second seal ring; the upper end of the outer wall of the second movable part is provided with a first sealing ring along the circumferential direction, and the first sealing ring completely seals the inner wall of the first movable part with the outer wall of the second movable part through interference fit; the sealing ring further comprises a second sealing ring, the second sealing ring is arranged on the inner wall of the lower pressing plate along the circumferential direction, and the second sealing ring is used for completely sealing the inner wall of the lower pressing plate and the outer wall of the base through interference fit.
9. The seal assembly for use in an anti-permeation test according to claim 8, wherein a water filtering platform is disposed along a circumference of said base, an upper surface of said water filtering platform is lower than an upper surface of said base, and said water filtering platform is provided with a water outlet communicating a gap between an inner wall of said lower platen and an outer wall of said base.
10. A method of performing a permeation resistance test based on the sealing device for a permeation resistance test according to any one of claims 1 to 9, comprising:
And (3) mounting a test block: moving the sealing wall away from the base, placing the test block on the base, and then forming a test chamber by enabling the sealing wall to be close to the base;
Sealing the test chamber: injecting water into the closed cavity from the sealing port, keeping the first movable part motionless, expanding the closed cavity to push the second movable part to move downwards until the inner side of the lower end of the sealing wall clings to the outer wall of the base; based on the principle that the volume of the elastomer is unchanged, the closed chamber expands to stretch the elastomer, so that the elastomer Zhou Xiangkui contracts to drive the inner wall of the elastomer to be attached to the outer wall of the test block;
Detection test: injecting water into the test chamber from the test port, and closing the test port after the water wraps the bottom of the test block; checking whether water marks appear on the upper surface of the test block, if so, the test block is poor in impermeability, otherwise, the test block is good in impermeability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410737626.4A CN118564651A (en) | 2024-06-07 | 2024-06-07 | Sealing device for anti-seepage detection and anti-seepage detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410737626.4A CN118564651A (en) | 2024-06-07 | 2024-06-07 | Sealing device for anti-seepage detection and anti-seepage detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118564651A true CN118564651A (en) | 2024-08-30 |
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ID=92465370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410737626.4A Pending CN118564651A (en) | 2024-06-07 | 2024-06-07 | Sealing device for anti-seepage detection and anti-seepage detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118564651A (en) |
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2024
- 2024-06-07 CN CN202410737626.4A patent/CN118564651A/en active Pending
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