Horizontal permeability coefficient testing equipment

Abstract

The utility model relates to the field of geomembrane testing and processing equipment, in particular to horizontal permeability coefficient testing equipment, which comprises a first balanced reservoir, a second balanced reservoir and a horizontal permeability coefficient testing device, the first balanced reservoir is connected with a water replenishing pipe and a drain pipe, a water inlet of the drain pipe is liftable, and a testing port is arranged at the bottom of one side wall of the first balanced reservoir; the second balanced water tank is arranged on one side of the first balanced water tank located at the test port, one side of the second balanced water tank close to the test port is communicated with the test port, a test station is formed on one side of the second balanced water tank close to the test port, and an overflow side wall is formed on one side of the second balanced water tank far away from the test port on the test station; the pressing block assembly comprises a lower pressing block arranged at the testing station in a lifting mode and a driving piece driving the lower pressing block to move up and down, and the lower pressing block abuts against the side wall of the second balance water tank in a sealed mode. The hydraulic gradient pressure difference between the two sides of the geotechnical cloth can be easily controlled, and the existing problems are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of geomembrane testing and processing equipment, and in particular to a horizontal permeability coefficient testing device. Background Technology

[0002] The water conductivity test of geotextiles is a crucial step in geotextile quality inspection. Among these tests, the determination of water flow (permeability) characteristics along the plane of the geotextile is a key indicator. The principle of horizontal permeability coefficient testing for geotextiles and related products is to measure the water flow rate within the plane of the geotextile and related products by changing the normal pressure under specified hydraulic gradient and contact material conditions. Maintaining and adjusting the hydraulic gradient, normal pressure, and the retention rate of the horizontal permeability coefficient over a long testing period presents challenges for the design of testing equipment. Patent publication number CN2442241Y discloses a device for detecting the horizontal water flow of geotextiles and related products, which uses a pipeline installed in a balanced water tank for testing. This type of testing method is difficult to control the hydraulic gradient on both sides of the geotextile. Therefore, the applicant proposes a testing device to facilitate precise control of geotextile testing. Utility Model Content

[0003] To address the aforementioned technical problems, this invention provides a horizontal permeability coefficient testing device that can easily control the hydraulic gradient pressure difference on both sides of the geotextile, effectively solving the existing problems.

[0004] To address the aforementioned problems, this utility model provides a horizontal permeability coefficient testing device, comprising: a first balancing water tank, the first balancing water tank being connected to a water supply pipe and a drain pipe, the inlet of the drain pipe being liftable, and a test port being provided at the bottom of one side wall of the first balancing water tank; a second balancing water tank, disposed on the side of the first balancing water tank located at the test port, the side of the second balancing water tank near the test port communicating with the test port, a test station being formed inside the second balancing water tank on the side near the test port, and an overflow sidewall being formed on the side of the second balancing water tank away from the test port at the test station; and a pressure block assembly, including a lower pressure block that is liftable and disposed at the test station, and a driving component that drives the lower pressure block to move up and down, the lower pressure block being in sealed contact with the side wall of the second balancing water tank.

[0005] Furthermore, the drain pipe includes a corrugated pipe connected to the bottom of the first balance water tank, a pipe head installed on the top of the corrugated pipe, the pipe head having a water inlet for the drain pipe, and the pipe head being connected to a lifting component.

[0006] Furthermore, the lifting component includes a lifting rod disposed outside the first balance water tank and a connecting rod connecting the lifting rod and the pipe head.

[0007] Furthermore, the first balancing water tank is connected to a first water level pipe, and the second balancing water tank is connected to a second water level pipe.

[0008] Furthermore, the bottom of the first balance water tank is provided with a water inlet pressure stabilizing nozzle, the water supply pipe is connected to the air inlet pressure stabilizing nozzle, and the end of the water supply pipe away from the first balance water tank is connected to the water receiving trough; the second balance water tank is provided with an overflow water tank on the outside of the overflow sidewall, the overflow water tank is connected to the water receiving trough, and a flow meter is provided between the overflow water tank and the water receiving trough; the drain pipe is connected to the water receiving trough.

[0009] Furthermore, the testing equipment also includes a pure water tank, which is connected to the water supply pipe; the water receiving tank is connected to the pure water tank via a circulation pipe.

[0010] Furthermore, the testing equipment also includes a filter, the outlet of which is connected to the pure water tank, and the inlet of which is connected to the circulation pipe.

[0011] Furthermore, the drive component includes a lead screw jack.

[0012] Furthermore, the second balance water tank is provided with a guide sidewall at the test station, and the pressing block abuts against the guide sidewall.

[0013] Furthermore, a sealing layer is provided on the inner surface of the guide sidewall.

[0014] The beneficial effect of this utility model is that it can easily control the hydraulic gradient pressure difference on both sides of the geotextile, effectively solving the existing problems. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A magnified view of the structure at point A in the illustrated embodiment.

[0018] The components include: 1. First balancing water tank; 2. Water supply pipe; 3. Drainage pipe; 301. Corrugated pipe; 302. Pipe head; 4. Test port; 5. Second balancing water tank; 6. Overflow sidewall; 7. Lower pressure block; 8. Drive component; 9. Lifting rod; 10. Connecting rod; 11. First water level pipe; 12. Second water level pipe; 13. Inlet pressure stabilizing nozzle; 14. Overflow water tank; 15. Water receiving trough; 16. Flow meter; 17. Pure water tank; 18. Circulation pipe; 19. Filter; 20. Guide sidewall; 21. Sealing layer; 22. Quartz sand filter box; 23. Activated carbon filter box; 24. Non-woven filter; 25. RO membrane filter; 26. Geotextile. Detailed Implementation

[0019] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0020] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] In this utility model, such as Figures 1 to 2 As shown, a horizontal permeability coefficient testing device is provided, comprising: a first balancing water tank 1, the first balancing water tank 1 being connected to a water supply pipe 2 and a drain pipe 3, the inlet of the drain pipe 3 being liftable, and a test port 4 being provided at the bottom of one side wall of the first balancing water tank 1; a second balancing water tank 5, disposed on the side of the first balancing water tank 1 located at the test port 4, the side of the second balancing water tank 5 near the test port 4 being connected to the test port 4, a test station being formed inside the second balancing water tank 5 on the side near the test port 4, and an overflow sidewall 6 being formed on the side of the second balancing water tank 5 away from the test port 4; and a pressure block assembly, including a lower pressure block 7 that is liftable and disposed at the test station, and a driving component 8 that drives the lower pressure block 7 to move up and down, the lower pressure block 7 being sealed and abutting against the side wall of the second balancing water tank 5.

[0025] In use, the testing equipment of this invention places the geotextile 26 at the testing position. The driving component 8 moves the lowering block 7 downwards to hold the geotextile in place. Water is supplied to the first balancing water tank 1 through the water supply pipe 2. The water level in the first balancing water tank 1 can be controlled by adjusting the inlet height of the drain pipe 3. Water that has permeated horizontally through the geotextile enters the second balancing water tank 5. Water overflows from the overflow sidewall 6 of the second balancing water tank 5, creating a stable hydraulic gradient pressure difference across the geotextile. The flow rate of the overflowing water from the overflow sidewall 6 can then be used for testing.

[0026] The testing equipment of this utility model can adjust the hydraulic gradient pressure difference on both sides of the geotextile by automatically overflowing the second balance water tank 5 and moving the inlet position of the drain pipe 3 up and down. This allows for convenient and stable adjustment.

[0027] In a preferred embodiment, the structure of the present invention is further described as follows: the drain pipe 3 includes a corrugated pipe 301 connected to the bottom of the first balance water tank 1 and a pipe head 302 installed on the top of the corrugated pipe 301. The pipe head 302 is provided with the water inlet of the drain pipe 3 and is connected to a lifting component.

[0028] As shown in the figure, by using a corrugated pipe 301, the corrugated pipe 301 can be connected to the bottom of the first balance water tank 1, which facilitates the raising and lowering of the control pipe head 302.

[0029] In a preferred embodiment, the lifting component further specifically refers to the structure of the present invention, which includes a lifting rod 9 disposed outside the first balance water tank 1 and a connecting rod 10 connecting the lifting rod 9 and the pipe head 302.

[0030] In a specific embodiment, the lifting rod 9 can be an electric lifting rod 9.

[0031] In a preferred embodiment, more specifically regarding the structure of this utility model, the first balancing water tank 1 is connected to a first water level pipe 11, and the second balancing water tank 5 is connected to a second water level pipe 12.

[0032] As shown in the figure, the first water level pipe 11 and the second water level pipe 12 are set close to the first balance water tank 1, so that the hydraulic gradient pressure difference between the first balance water tank 1 and the second balance water tank 5 can be easily observed.

[0033] In a preferred embodiment, more specifically regarding the structure of this utility model, the bottom of the first balance water tank 1 is provided with a water inlet pressure stabilizing nozzle 13, the water supply pipe 2 is connected to the air inlet pressure stabilizing nozzle, and the end of the water supply pipe 2 away from the first balance water tank 1 is connected to the water receiving trough 15; the second balance water tank 5 is provided with an overflow water tank 14 on the outside of the overflow side wall 6, the overflow water tank 14 is connected to the water receiving trough 15, and a flow meter 16 is provided between the overflow water tank 14 and the water receiving trough 15; the drain pipe 3 is connected to the water receiving trough 15.

[0034] As shown in the figure, the water overflowing from the second balance water tank 5 through the overflow side wall 6 enters the overflow water tank 14. The overflow water tank 14 is introduced into the receiving tank 15 through the outlet pipe. The outlet pipe is equipped with a flow meter 16 to monitor the infiltration water flow of the second balance water tank 5.

[0035] In a preferred embodiment, more specifically regarding the structure of this utility model, the testing device further includes a filter 19, the outlet of which is connected to the pure water tank 17, and the inlet of which is connected to the circulation pipe 18.

[0036] As shown in the figure, the quality of the water entering the first balance tank 1 can be improved by setting up a filter 19. In the illustrated embodiment, the filter 19 specifically includes a quartz sand filter box 22, an activated carbon filter box 23, a non-woven fabric filter 24, and an RO membrane filter 25 (as shown in the figure, they are connected one after another from right to left), thereby ensuring the stability of the water quality for geomembrane testing.

[0037] In optional embodiments, other existing filter 19 structures may also be used for the structure of filter 19.

[0038] In a preferred embodiment, specifically regarding the structure of this utility model, the driving component 8 includes a screw jack. As shown in the figure, by employing a screw jack, the up-and-down movement of the lower pressure block 7 can be easily controlled, and the screw jack can also be used to drive the lower pressure block 7 downward to adjust the pressure of the lower pressure block 7 on the geotextile.

[0039] In a preferred embodiment, specifically regarding the structure of this invention, the second balancing water tank 5 is provided with a guide sidewall 20 at the test station, and the lower pressure block 7 abuts against the guide sidewall 20. As shown in the figure, the second balancing water tank 5 forms a cylindrical structure at the test station through the guide sidewall 20. The bottom of the guide sidewall 20 forms a water passage gap with the bottom wall of the second balancing water tank 5, allowing water that has horizontally permeated through the geotextile to enter the second balancing water tank 5 through the test station. The guide sidewall 20 can help constrain the up-and-down movement of the lower pressure block 7 and also facilitates the control of the sealing contact between the lower pressure block 7 and the sidewall of the second balancing water tank 5.

[0040] In a preferred embodiment, specifically regarding the structure of this invention, the inner surface of the guide sidewall 20 is provided with a sealing layer 21. As shown in the figure, the sealing layer 21 can be a rubber sealing layer 21, thereby preventing gaps from forming between the lower pressure block 7 and the guide sidewall 20.

[0041] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0042] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A horizontal permeability coefficient testing device, characterized in that, include: The first balance water tank is connected to a water supply pipe and a drain pipe. The inlet of the drain pipe is designed to be liftable. A test port is provided at the bottom of one side wall of the first balance water tank. The second balance water tank is located on the side of the first balance water tank located at the test port. The side of the second balance water tank near the test port is connected to the test port. A test station is formed in the second balance water tank on the side near the test port. An overflow sidewall is formed in the second balance water tank on the side of the test station away from the test port. The pressure block assembly includes a lower pressure block that can be raised and lowered at the test station, and a drive component that drives the lower pressure block to move up and down. The lower pressure block is in sealed contact with the side wall of the second balance water tank.

2. The horizontal permeability coefficient testing device according to claim 1, characterized in that, The drain pipe includes a corrugated pipe connected to the bottom of the first balance water tank, a pipe head installed on the top of the corrugated pipe, the pipe head having a water inlet for the drain pipe, and a lifting component connected to the pipe head.

3. The horizontal permeability coefficient testing device according to claim 2, characterized in that, The lifting component includes a lifting rod disposed outside the first balance water tank and a connecting rod connecting the lifting rod and the pipe head.

4. The horizontal permeability coefficient testing device according to claim 1, characterized in that, The first balancing water tank is connected to a first water level pipe, and the second balancing water tank is connected to a second water level pipe.

5. The horizontal permeability coefficient testing device according to claim 1, characterized in that, The bottom of the first balance water tank is provided with a water inlet pressure stabilizing nozzle, the water supply pipe is connected to the water inlet pressure stabilizing nozzle, and the end of the water supply pipe away from the first balance water tank is connected to the water receiving tank; The second balance water tank is provided with an overflow water tank on the outside of the overflow sidewall. The overflow water tank is connected to the water receiving tank, and a flow meter is provided between the overflow water tank and the water receiving tank. The drain pipe is connected to the water receiving tank.

6. The horizontal permeability coefficient testing device according to claim 5, characterized in that, The testing equipment also includes a pure water tank, which is connected to the water supply pipe; The water receiving tank is connected to the pure water tank via a circulation pipe.

7. The horizontal permeability coefficient testing device according to claim 6, characterized in that, The testing equipment also includes a filter, the outlet of which is connected to the pure water tank, and the inlet of which is connected to the circulation pipe.

8. The horizontal permeability coefficient testing device according to claim 1, characterized in that, The drive component includes a lead screw jack.

9. The horizontal permeability coefficient testing device according to claim 1, characterized in that, The second balance water tank is provided with a guide sidewall at the test station, and the pressure block abuts against the guide sidewall.

10. A horizontal permeability coefficient testing device according to claim 9, characterized in that, The inner surface of the guide sidewall is provided with a sealing layer.

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