Water injection test device

Abstract

The disclosure provides a water injection test device, and relates to the technical field of permeability coefficient testing.The water injection test device comprises a base, a driving assembly, and a water injection pipe.The base comprises a first seat body and a second seat body coaxially arranged and connected with the first seat body.The second seat body is elastic.The base has a cavity which is arranged through the first seat body and the second seat body along the axial direction of the first seat body.The driving assembly comprises a driving pump, a container and the water injection pipe.The container, the driving pump and the water injection pipe are sequentially connected.The container contains water.The accuracy of test results can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of permeability testing technology, and more specifically, to a water injection test apparatus. Background Technology

[0002] During the construction of rockfill dams, it is necessary to measure the permeability coefficient of the soil layer. The permeability coefficient is a quantitative indicator representing the permeability of soil and is also a basic parameter that must be used in seepage calculations.

[0003] In related technologies, the permeability coefficient of soil layers is mostly measured using a single-ring water injection test.

[0004] However, during the single-ring water injection test, the water inside the steel ring overflowed due to the low flatness of the bottom of the test pit, affecting the accuracy of the test results.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] This disclosure provides a water injection test apparatus that can improve the accuracy of test results.

[0007] This disclosure provides a water injection test apparatus, comprising:

[0008] The base includes a first seat body and a second seat body coaxially disposed and connected to the first seat body. The second seat body is elastic. The base has a cavity that extends through the first seat body and the second seat body along the axial direction of the first seat body.

[0009] The drive assembly includes a drive pump, a container, and a water injection pipe, wherein the container, drive pump, and water injection pipe are connected in sequence, and the container contains water.

[0010] In one embodiment of this disclosure, the first base includes a first sub-base and a second sub-base connected together, the second sub-base being located between the first sub-base and the second base, the side of the second sub-base away from the first sub-base being connected to the second base, and the second sub-base being used to buffer the impact exerted by the first sub-base on the second base.

[0011] In one embodiment of this disclosure, the outer diameter of the second sub-base and the outer diameter of the second base are both greater than the outer diameter of the first sub-base.

[0012] In one embodiment of this disclosure, a first magnet is provided on the side of the second sub-base near the second base, and a second magnet is provided on the side of the second base near the first sub-base. The first magnet and the second magnet attract each other, and the first magnet and the second magnet extend circumferentially along the first base.

[0013] In one embodiment of this disclosure, the first magnet has a first notch on the side away from its own axis, and the second magnet has a second notch on the side away from its own axis, the first notch and the second notch forming a conical cavity;

[0014] The water injection test device further includes a sealing ring, which includes a ring body and an annular protrusion on the ring body. The annular protrusion is tapered on the side away from the ring body and engages with the tapered cavity.

[0015] In one embodiment of this disclosure, the second sub-base is provided with a first annular groove on the side near the second base body, and the second base body is provided with a second annular groove on the side near the first sub-base body. The first magnet is disposed in the first annular groove, and the second magnet is disposed in the second annular groove.

[0016] In one embodiment of this disclosure, the distance from the side of the first magnet closest to the second magnet to the bottom of the first annular groove is less than the depth of the first annular groove, and the distance from the side of the second magnet closest to the first magnet to the bottom of the second annular groove is less than the depth of the second annular groove.

[0017] In one embodiment of this disclosure, the water injection test device further includes an elastic rope that is wound around the sealing ring at least once.

[0018] In one embodiment of this disclosure, the water injection test device further includes a level controller and a flow meter. The level controller and the flow meter are connected through the water injection pipe. The level controller is located on the inner side wall of the first seat and is used to control the drive pump to start when the water level in the cavity is lower than the position of the level controller.

[0019] In one embodiment of this disclosure, the inner peripheral wall of the first seat body has a groove, which extends along the axis of the first seat body.

[0020] The water injection test device also includes an adjustment component;

[0021] The adjustment assembly includes a support rod, a slider, and an adjusting member. One end of the support rod is connected to the liquid level controller, and the other end is connected to the slider. The slider can slide along the groove, and the adjusting member is used to fix the position of the slider.

[0022] The base can be placed in the test pit, with the second seat abutting against the bottom of the pit. A pump then delivers water from a container to a water injection pipe, which in turn delivers the water to the cavity of the base for soil permeability coefficient measurement. In this embodiment, the elasticity of the second seat eliminates the gap between it and the bottom of the test pit under the pressure of the first seat. This prevents water from overflowing the cavity and instead directs it to seep directly below the first seat, improving the accuracy of the test results. Furthermore, it eliminates the need for personnel to achieve a high degree of flatness at the bottom of the test pit, reducing workload and increasing efficiency. Additionally, the elimination of manual water addition to the cavity reduces water level fluctuations and facilitates control of the water level.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] Figure 1 This is a front view of a water injection test apparatus according to one embodiment of this disclosure.

[0026] Figure 2 This is a front view of a water injection test apparatus in one embodiment of the present disclosure, intended to illustrate a liquid level controller.

[0027] Figure 3 This is a cross-sectional view of one embodiment of the present disclosure, intended to illustrate the connection between the second base and the second sub-base.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Base; 11. First base body; 111. First sub-base body; 112. Second sub-base body; 12. Second base body; 13. First magnet; 14. Second magnet; 2. Sealing ring; 21. Ring body; 22. Annular protrusion; 3. Frame; 31. Column; 32. Flat plate; 4. Liquid level controller; 5. Flow meter; 6. Water injection pipe; 7. T-connector; 8. Support rod. Detailed Implementation

[0030] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0031] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0032] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0033] This disclosure provides a water injection test apparatus, see [link to relevant documentation]. Figure 1 The system includes a base 1 and a drive assembly. The base 1 includes a first seat 11 and a second seat 12 coaxially arranged and connected to the first seat 11. The second seat 12 is elastic. The base 1 has a cavity that extends through the first seat 11 and the second seat 12 along the axial direction of the first seat 11. The drive assembly includes a drive pump, a container, and a water injection pipe 6. The container, drive pump, and water injection pipe 6 are sequentially connected via a pipe, and the container contains water.

[0034] In this way, the base 1 can be placed in the test pit, so that the second seat 12 abuts against the bottom of the test pit. Then, the water in the container is transported to the water injection pipe 6 by a drive pump, and finally the water is transported to the cavity of the base 1 through the water injection pipe 6 for the soil permeability coefficient measurement test. In the embodiment of this disclosure, because the second seat 12 is elastic, under the pressure of the first seat 11, the gap between the second seat 12 and the bottom of the test pit is eliminated, so that the water in the cavity will not overflow, but will seep directly below the first seat 11, which is beneficial to improving the accuracy of the test results. At the same time, it is not necessary for the test personnel to specially treat the bottom of the test pit to a high degree of flatness, reducing the workload of the test personnel and improving the test efficiency. In addition, it is not necessary to manually add water to the cavity, reducing the fluctuation range of water in the cavity and making it easier to control the water level in the cavity.

[0035] In one embodiment of this disclosure, the first seat 11 can be made of materials such as iron or steel, and the second seat 12 can be made of silicone, specifically silicone of grade 5 or grade 10, so that the second seat 12 is soft and has good elasticity.

[0036] In one embodiment of this disclosure, see Figure 1 The first base 11 includes a first sub-base 111 and a second sub-base 112 connected together. The second sub-base 112 is located between the first sub-base 111 and the second base 12. The side of the second sub-base 112 away from the first sub-base 111 is connected to the second base 12. The second sub-base 112 is used to buffer the impact exerted by the first sub-base 111 on the second base 12. For example, the material of the second sub-base 112 can be rubber to provide cushioning and improve the service life of the second base 12.

[0037] In one embodiment of this disclosure, see Figure 1 The outer diameters of the second sub-base 112 and the first sub-base 111 are both larger than the outer diameter of the first sub-base 111. As an example, the second sub-base 12, the first sub-base 111, and the second sub-base 112 are all annular structures with the same inner diameter. The outer diameter of the second sub-base 112 is the same as the outer diameter of the second sub-base 112, and both are larger than the outer diameter of the first sub-base 111; for example, the outer diameter of the second sub-base 12 is 3 cm larger than the outer diameter of the first sub-base 111. This expands the contact area between the second sub-base 12 and the bottom of the test pit, which on the one hand improves the stability of the water injection test device, and on the other hand better prevents water overflow from the cavity, further improving the accuracy of the test results.

[0038] In one embodiment of this disclosure, the thickness of the second base 12 can be 2 cm, the thickness of the second sub-base 112 can be the same as or different from the thickness of the second base 12, and the thickness of the first sub-base 111 can be 15 cm. It should be noted that the thickness in this document refers to the dimension along the axial direction of the second base 12.

[0039] In one embodiment of this disclosure, the inner peripheral wall of the first sub-base 111 is provided with a scale, which extends axially along the first sub-base 111 and has a range of 10cm to help test personnel control the water level in the cavity.

[0040] In one embodiment of this disclosure, the outer peripheral wall of the first sub-base 111 may have an annular rib, which is coaxially arranged with the first sub-base 111. A level may be provided on the annular rib to facilitate the detection of whether the water injection test device is horizontal, thereby improving the accuracy of the test results.

[0041] In one embodiment of this disclosure, see Figure 1 and Figure 3 A first magnet 13 is provided on the side of the second sub-base 112 closest to the first sub-base 111, and a second magnet 14 is provided on the side of the second sub-base 111 closest to the first sub-base 111. The first magnet 13 and the second magnet 14 attract each other and extend circumferentially along the first sub-base 111. In other words, the first magnet 13 and the second magnet 14 are ring-shaped. The first magnet 13 and the second magnet 14 can be soft magnets, and there is no gap when the first magnet 13 and the second magnet are magnetically attracted. Thus, the magnetic attraction of the first magnet 13 and the second magnet 14 facilitates the installation and removal of the second sub-base 12 and the second sub-base 112, improving maintenance convenience. In addition, the first magnet 13 and the second magnet 14 can provide a certain degree of hardness to the second sub-base 12 and the second sub-base 112, which is beneficial to improving the stability of the water injection test device.

[0042] In one embodiment of this disclosure, the first magnet 13 may have a mating ridge on the side near the second magnet 14, extending circumferentially along the first magnet 13. The second magnet 14 may have a mating groove on the side near the first magnet 13, extending circumferentially along the second magnet 14. When the first magnet 13 and the second magnet 14 are magnetically attracted, the mating ridge engages with the mating groove. This facilitates the positioning of the first magnet 13 and the second magnet 14, thereby improving assembly stability.

[0043] In one embodiment of this disclosure, see Figure 3The first magnet 13 has a first notch on the side away from its own axis, and the second magnet 14 has a second notch on the side away from its own axis, forming a conical cavity. The water injection test device also includes a sealing ring 2, which includes a ring body 21 and an annular protrusion 22 disposed on the ring body 21. The annular protrusion 22 is conical on the side away from the ring body 21, and the annular protrusion 22 is press-fitted into the conical cavity. In this way, the annular protrusion 22 press-fits into the conical cavity to improve the sealing performance and prevent water in the cavity from leaking between the second seat 12 and the second sub-seat 112, which is beneficial to further improve the accuracy of the test results.

[0044] In one embodiment of this disclosure, a first annular groove is provided on the side of the second sub-base 112 near the first sub-base 111, and a second annular groove is provided on the side of the second sub-base 111 near the first sub-base 111. The first magnet 13 can be bonded to the first annular groove, and the second magnet 14 can be bonded to the second annular groove. Thus, by providing the first and second annular grooves, the positioning and assembly of the first magnet 13 and the second magnet 14 are facilitated, and the thickness of the second sub-base 112 can be reduced, improving structural compactness.

[0045] In one embodiment of this disclosure, the distance from the side of the first magnet 13 closest to the second magnet 14 to the bottom of the first annular groove is less than the depth of the first annular groove, and the distance from the side of the second magnet 14 closest to the first magnet 13 to the bottom of the second annular groove is less than the depth of the second annular groove. For example, the height difference is 1 cm. Thus, when the first magnet 13 and the second magnet 14 are magnetically attracted, since the second base body 12 and the second sub-base body 112 are elastic, the attraction force of the first magnet 13 and the second magnet 14 will squeeze the sides of the second base body 12 and the second sub-base body 112 that are close to each other. Combined with the annular protrusion 22, this facilitates sealing between the second base body 12 and the second sub-base body 112, further improving the sealing performance and reducing the possibility of water leakage in the cavity.

[0046] In one embodiment of this disclosure, the water injection test device further includes an elastic rope that wraps around the sealing ring 2 at least once. This allows the sealing ring 2 to be secured by the elastic rope, and also facilitates the removal of the second sealing ring 2 when the second base 12 needs to be replaced.

[0047] In one embodiment of this disclosure, the first sub-base 111 and the second sub-base 112 can be connected by adhesive. The second sub-base 112 and the second base 12 can also be connected by adhesive.

[0048] In one embodiment of this disclosure, see Figure 1 and Figure 2The water injection test device also includes a frame 3, a level controller 4, and a flow meter 5. The frame 3 includes two columns 31 and a plate 32. The two columns 31 are integrally connected by the plate 32. The columns 31 are welded to the outer peripheral wall of the first sub-base 111. The plate 32 is spaced apart from the first sub-base 111 and does not completely cover the first sub-base 111. The level controller 4 and the flow meter 5 are connected by a water injection pipe 6. A three-way connector 7 can be fixed on the plate 32. There can be two water injection pipes 6. The two water injection pipes 6 are respectively connected to two interfaces of the three-way connector 7. The remaining interface of the three-way connector 7 is connected to the drive pump through a pipeline. The flow meter 5 is located on the pipeline between the three-way connector 7 and the drive pump. The water injection pipe 6 passes through the plate 32 and extends into the cavity. Two level controllers 4 are provided, radially distributed along the first base 11. The level controllers 4 are located on the inner wall of the first base 11 and are used to control the start of the drive pump when the water level in the cavity is lower than the position of the level controller 4. The level controllers 4 also control the drive pump to shut down when the water level in the cavity reaches the position of the level controller 4. As an example, the level controller 4 is a float valve level control device. Thus, the water level in the cavity is automatically controlled through the interaction between the level controller 4 and the drive pump, eliminating the need for manual water addition and improving the convenience and efficiency of the experiment. Simultaneously, using two water injection pipes 6 to add water to the cavity provides efficient water addition, and since each water injection pipe 6 connects to two level controllers 4, this redundant design ensures that if one level controller 4 fails, the other level controller 4 continues to operate normally, improving the practicality of the experimental device. Furthermore, the flow rate of the water in the cavity is detected by a flow meter 5, facilitating data collection by the experimenter and improving the accuracy of the experiment.

[0049] In one embodiment of this disclosure, see Figure 2 The inner peripheral wall of the first seat 11 has a groove extending along the axis of the first seat 11. The water injection test device also includes an adjustment assembly; the adjustment assembly includes a support rod 8, a slider (not shown in the accompanying drawings), and an adjusting component (not shown in the accompanying drawings). One end of the support rod 8 is connected to the liquid level controller 4, and the other end is connected to the slider. The slider can slide along the groove, and the adjusting component is used to fix the position of the slider. The adjusting component can be an adjusting screw, which can pass through the slider and be threadedly connected to it. The adjusting screw can abut against the bottom of the groove. The cross-section of the groove can be "T"-shaped, so that the cross-section of the slider is also "T"-shaped, thereby preventing the slider from detaching from the groove. In this way, by sliding along the groove, the slider can drive the liquid level controller 4 to move up and down in the cavity. By abutting against the bottom of the groove with the adjusting screw, the position of the slider can be fixed. The liquid level in the cavity can be controlled according to specific needs, facilitating different tests and improving the applicability of the water injection test device.

[0050] In one embodiment of this disclosure, two liquid level controllers 4 can be fixedly connected by a connecting rod. When the position of one slider is adjusted, the position of the other slider is simultaneously adjusted via the connecting rod, which improves the convenience of adjustment and facilitates the normal conduct of the test.

[0051] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A water injection test device, characterized in that, include: The base includes a first seat body and a second seat body coaxially disposed and connected to the first seat body. The second seat body is elastic. The base has a cavity that extends through the first seat body and the second seat body along the axial direction of the first seat body. The drive assembly includes a drive pump, a container, and a water injection pipe, wherein the container, drive pump, and water injection pipe are connected in sequence, and the container contains water.

2. The water injection test device according to claim 1, characterized in that, The first base includes a first sub-base and a second sub-base connected together. The second sub-base is located between the first sub-base and the second base. The side of the second sub-base away from the first sub-base is connected to the second base. The second sub-base is used to buffer the impact exerted by the first sub-base on the second base.

3. The water injection test device according to claim 2, characterized in that, The outer diameter of the second sub-base and the outer diameter of the second base are both greater than the outer diameter of the first sub-base.

4. The water injection test device according to claim 2, characterized in that, The second sub-base has a first magnet on the side near the second base body, and a second magnet on the side near the first sub-base body. The first magnet and the second magnet attract each other and extend along the circumference of the first base body.

5. The water injection test apparatus according to claim 4, characterized in that, The first magnet has a first notch on the side away from its own axis, and the second magnet has a second notch on the side away from its own axis, the first notch and the second notch forming a conical cavity; The water injection test device further includes a sealing ring, which includes a ring body and an annular protrusion on the ring body. The annular protrusion is tapered on the side away from the ring body and engages with the tapered cavity.

6. The water injection test apparatus according to claim 4, characterized in that, The second sub-base has a first annular groove on the side near the second base body, and a second annular groove on the side near the first sub-base body. The first magnet is disposed in the first annular groove, and the second magnet is disposed in the second annular groove.

7. The water injection test apparatus according to claim 6, characterized in that, The distance from the side of the first magnet closest to the second magnet to the bottom of the first annular groove is less than the depth of the first annular groove, and the distance from the side of the second magnet closest to the first magnet to the bottom of the second annular groove is less than the depth of the second annular groove.

8. The water injection test apparatus according to claim 5, characterized in that, The water injection test device also includes an elastic rope, which is wound around the sealing ring at least once.

9. The water injection test apparatus according to claim 1, characterized in that, The water injection test device also includes a level controller and a flow meter. The level controller and the flow meter are connected through the water injection pipe. The level controller is located on the inner side wall of the first seat and is used to control the drive pump to start when the water level in the cavity is lower than the position of the level controller.

10. The water injection test apparatus according to claim 9, characterized in that, The inner peripheral wall of the first seat body has a groove, which extends along the axis of the first seat body. The water injection test device also includes an adjustment component; The adjustment assembly includes a support rod, a slider, and an adjusting member. One end of the support rod is connected to the liquid level controller, and the other end is connected to the slider. The slider can slide along the groove, and the adjusting member is used to fix the position of the slider.

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