Concrete permeability coefficient detection device

Abstract

The invention belongs to the technical field of permeability coefficient detection, and provides a concrete permeability coefficient detection device, which comprises a box body, and a constant temperature assembly is arranged in the box body; the measuring cylinder is arranged in the box body, the top of the measuring cylinder is detachably connected with a placing pipe, the placing pipe is communicated with the measuring cylinder, the pervious concrete column is arranged in the placing pipe, a fixing assembly is arranged in the placing pipe, the fixing assembly is attached to the outer wall of the pervious concrete column, and the fixing assembly is used for being fixedly connected with the pervious concrete column in the placing pipe; the bottom of the constant-pressure water tank communicates with a circulation assembly, the bottom of the circulation assembly is detachably connected to the top of the containing pipe, the circulation assembly communicates with the containing pipe, and a lifting mechanism is arranged between the constant-pressure water tank and the box body; the measuring cylinder and the placing pipe are connected through the sealing piece, and the placing pipe and the circulation assembly are connected through the sealing piece. Water seepage does not exist in the detection process, the top water pressure of the test piece in the detection process is constant, the seepage water temperature is constant, and the detection precision is high.

Description

Technical Field

[0001] The invention belongs to the technical field of water permeability coefficient detection, and in particular relates to a concrete water permeability coefficient detection device. Background Art

[0002] Permeability coefficient is an important indicator to measure the ability of concrete to resist the penetration of liquids (such as water, oil, etc.). If the permeability coefficient of concrete is high, it means that its impermeability performance is poor. Then, during use, external moisture, chemicals, etc. can easily penetrate into the concrete, leading to problems such as steel corrosion and concrete expansion and cracking, thereby shortening the service life of the concrete structure. Therefore, through the permeability coefficient test, the impermeability performance of concrete can be evaluated to ensure the durability of the concrete structure. At the same time, in structural engineering, if the impermeability performance of concrete does not meet the standard, it will pose a threat to the safety of the building. For example, in basements, pools and other parts that require waterproofing, if the permeability coefficient of concrete is too high, it will cause serious water seepage problems, which will not only affect the use function, but also may cause structural safety problems. Therefore, through the permeability coefficient test, the problem of insufficient concrete impermeability can be discovered and solved in time to ensure the safety of structural engineering. During the construction process, according to the test results of the permeability coefficient of concrete, the construction process can be adjusted, the mix ratio can be optimized, etc., to improve the impermeability performance of concrete. In addition, in terms of material selection, suitable concrete raw materials and additives can also be selected according to the permeability coefficient test results to meet the requirements of the project for the impermeability performance of concrete. In summary, through continuous research and improvement of testing methods and technical means, the impermeability of concrete can be evaluated more accurately, providing more reliable data support for the research and application of concrete materials, and providing technical support for promoting the application and development of concrete materials in more fields.

[0003] Permeable concrete is also called porous concrete, sandless concrete, and permeable floor. It is a porous lightweight concrete made of aggregate, cement, reinforcing agent, and water. It does not contain fine aggregate. Permeable concrete is a honeycomb structure with uniformly distributed pores formed by coating the surface of coarse aggregate with a thin layer of cement slurry and bonding each other. Therefore, it has the characteristics of air permeability, water permeability, and light weight. Permeable concrete as a paving material can allow rainwater to flow into the ground, effectively replenish groundwater, and alleviate some urban environmental problems such as the sharp decline of urban groundwater levels. It can effectively eliminate the harm of oil compounds on the ground to the environment. At the same time, it can protect groundwater, maintain ecological balance, and alleviate the urban heat island effect. It is conducive to the benign development of the human living environment and urban rainwater management and water pollution prevention and control. After the permeable concrete of the prior art is prepared, its permeability coefficient needs to be tested to see whether its permeability efficiency meets the standard. By testing the parameters such as the water seepage of concrete blocks, concrete thickness, and concrete upper surface area at the same water temperature, the permeability coefficient of concrete can be obtained.

[0004] Whether it is ordinary concrete or permeable concrete, the test results of its permeability coefficient are crucial to the project. However, the existing concrete permeability coefficient testing devices still have the following problems: 1. Water can easily flow out from the gap between the test piece and the permeable pipe, resulting in deviations in the test data; 2. During the test, the water temperature is prone to deviations; 3. As the experiment proceeds, the water pressure above the test piece will change as the amount of water used for infiltration decreases. Summary of the invention

[0005] The purpose of the present invention is to provide a concrete water permeability coefficient detection device to solve the above problems, so as to achieve the purpose of no water seepage during the detection process, constant water pressure on the top of the test piece during the detection process, constant temperature of the seepage water, and improving the detection accuracy.

[0006] To achieve the above object, the present invention provides the following solution: a concrete water permeability coefficient detection device, comprising:

[0007] A box body, wherein a constant temperature component is arranged inside the box body, and the constant temperature component is used to keep the box body in a constant temperature environment;

[0008] A measuring cylinder, the measuring cylinder is arranged in the box, the top of the measuring cylinder is detachably connected with a placement tube, the placement tube is communicated with the measuring cylinder, the permeable concrete column is arranged in the placement tube, a fixing component is arranged in the placement tube, the fixing component is fitted with the outer wall of the permeable concrete column, and the fixing component is used to fix the permeable concrete column in the placement tube;

[0009] A constant pressure water tank, wherein the bottom of the constant pressure water tank is connected to a flow assembly, the bottom of the flow assembly is detachably connected to the top of the placement tube, and the flow assembly is connected to the placement tube, and a lifting mechanism is provided between the constant pressure water tank and the box body;

[0010] A sealing member is provided, wherein the measuring cylinder and the placement tube are connected, and the placement tube and the circulation component are connected respectively by the sealing member.

[0011] Preferably, a box door is provided on the side wall of the box body, a sliding plate is slidably connected to the bottom of the box body, the sliding plate slides out of the box body through the box door, the measuring cylinder is fixedly connected to the sliding plate, a first magnet is fixedly connected to the side of the sliding plate away from the box door, a second magnet is fixedly connected to the side wall of the box body away from the box door, and the first magnet and the second magnet are arranged correspondingly.

[0012] Preferably, the fixing assembly includes an annular airbag, the outer wall of the annular airbag is fixedly connected to the inner wall of the placement tube, the permeable concrete column is tightly fitted to the inner wall of the annular airbag, one end of the inflation tube is connected to the annular airbag, and the other end of the inflation tube is connected to the air supply device.

[0013] Preferably, the height of the annular airbag and the permeable concrete column is the same as the height of the placement tube.

[0014] Preferably, the circulation component includes a first connecting pipe fixedly connected to the bottom of the constant pressure water tank, the first connecting pipe is connected to the constant pressure water tank, the bottom of the first connecting pipe is connected to a connecting pipe and a second connecting pipe in sequence, an electronic water valve is provided on the connecting pipe, and the bottom of the second connecting pipe is connected to the top of the placement tube.

[0015] Preferably, a water tank is also provided in the casing, a water pump is provided in the water tank, a water inlet and a water outlet are connected on the side wall of the constant pressure water tank, the water outlet is located at the top of the side wall of the constant pressure water tank, the water outlet end of the water pump is connected to the water inlet through a water inlet pipe, and the water outlet is connected to the water tank through a return pipe.

[0016] Preferably, a water-filling pipe is fixedly passed through the top of the box body, an opening is provided at the top of the constant-pressure water tank, and the bottom end of the water-filling pipe extends into the constant-pressure water tank through the opening.

[0017] Preferably, the seal between the placement tube and the measuring cylinder includes an annular groove opened on the top of the measuring cylinder and an annular boss fixedly connected to the bottom of the placement tube, a rubber ring is fixedly connected in the annular groove, and the annular boss fits with the rubber ring.

[0018] Preferably, the lifting mechanism includes a plurality of slide rails vertically fixedly connected to the box body, the constant pressure water tank is slidably connected to the plurality of slide rails, a telescopic cylinder is fixedly connected between the constant pressure water tank and the box body, and the telescopic cylinder controls the connection or disconnection between the second connecting pipe and the placement pipe by adjusting the height of the constant pressure water tank.

[0019] Preferably, the thermostatic assembly comprises a thermostatic adjustment module fixedly connected to the side wall of the box and a temperature sensor arranged in the box, and the thermostatic adjustment module mainly functions to adjust the temperature in the box.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] 1. The present invention provides a constant temperature environment for detection and improves detection accuracy by maintaining a constant temperature inside the box, and fully wraps the outer wall of the permeable concrete column through a fixed component to ensure that water passes through the permeable concrete column. By setting a constant pressure water tank, the water pressure at the top of the permeable concrete column is ensured to be constant during the detection process, thereby further reducing the detection error and improving the credibility of the detection result.

[0022] 2. The placement tube is set as a detachable structure to facilitate the placement and removal of the permeable concrete columns before and after the detection, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a schematic diagram of a detection device of the present invention;

[0025] Figure 2 This is a schematic diagram of the detection device of the present invention after the box door is removed;

[0026] Figure 3 It is a schematic diagram of the connection between the constant pressure water tank and the water tank of the present invention;

[0027] Figure 4 is a schematic diagram of a water pump of the present invention;

[0028] Figure 5 is a cross-sectional view of the second connecting tube, the placement tube and the measuring cylinder of the present invention;

[0029] Figure 6 for Figure 5 A partial enlarged view in FIG.

[0030] Figure 7 is a cross-sectional view of a sliding plate of the present invention;

[0031] Among them, 1. box body; 2. box door; 3. constant temperature adjustment module; 4. sliding plate; 5. measuring cylinder; 6. placement tube; 7. first connecting pipe; 8. constant pressure water tank; 9. slide rail; 10. telescopic cylinder; 11. water supply pipe; 12. water outlet; 13. water inlet; 14. return pipe; 15. water inlet pipe; 16. water pump; 17. water tank; 18. temperature sensor; 19. annular airbag; 20. rubber ring; 21. annular groove; 22. annular boss; 23. inflation tube; 24. second connecting pipe; 25. connecting pipe; 26. electronic water valve; 27. first magnet; 28. second magnet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-Figure 7 The present invention provides a concrete water permeability coefficient detection device, comprising:

[0035] Box 1, a thermostatic component is arranged inside the box 1, and the thermostatic component is used to keep the box 1 in a constant temperature environment;

[0036] A measuring cylinder 5 is arranged in the box body 1, a placing tube 6 is detachably connected to the top of the measuring cylinder 5, the placing tube 6 is communicated with the measuring cylinder 5, the permeable concrete column is arranged in the placing tube 6, a fixing component is arranged in the placing tube 6, the fixing component is fitted with the outer wall of the permeable concrete column, and the fixing component is used to fix the permeable concrete column in the placing tube 6;

[0037] A constant pressure water tank 8, the bottom of which is connected to a flow assembly, the bottom of which is detachably connected to the top of the placement tube 6, and the flow assembly is connected to the placement tube 6, and a lifting mechanism is provided between the constant pressure water tank 8 and the box body 1;

[0038] The measuring cylinder 5 and the placing tube 6 as well as the placing tube 6 and the circulation component are connected respectively through sealing members.

[0039] The main function of the constant temperature component is to maintain the box body 1 in a constant temperature state to ensure that the temperature at various locations during the detection process will not change; the surface of the measuring cylinder 5 may have scales for detecting the amount of water that passes through the permeable concrete column during the test period; the main function of the fixing component is to fix the permeable concrete column in the placement tube 6, and by fitting with the outer wall of the permeable concrete column and fully wrapping it, ensure that water passes through the permeable concrete column; the main function of the constant pressure water tank 8 is to provide water for infiltration to the top of the permeable concrete column, while maintaining the water pressure at the top of the permeable concrete column constant; the main function of the lifting mechanism is to adjust the height of the constant pressure water tank 8. Before and after the detection, the height of the constant pressure water tank 8 is raised to separate the circulation component from the placement tube 6, which is convenient for the placement and removal of the permeable concrete column. During the experiment, the height of the constant pressure water tank 8 is lowered to make the circulation component, the placement tube 6 and the measuring cylinder 5 tightly connected; the main function of the seal is to ensure that no water seeps out from between the circulation component and the placement tube 6 or between the placement tube 6 and the measuring cylinder 5 during the detection process. On the whole, the present invention provides a constant temperature environment for detection by maintaining a constant temperature in the box, thereby improving detection accuracy, and fully wraps the outer wall of the permeable concrete column through a fixed component to ensure that water passes through the permeable concrete column. By setting a constant pressure water tank, the water pressure at the top of the permeable concrete column is ensured to be constant during the detection process, further reducing the detection error and improving the credibility of the detection result. At the same time, the placement tube is set as a detachable structure to facilitate the placement and removal of the permeable concrete column before and after the detection, thereby improving the detection efficiency.

[0040] To further optimize the solution, the placement tube 6 is made of transparent material.

[0041] A further optimization scheme also includes a controller, which is electrically connected to the constant temperature component, the constant pressure water tank 8 and the lifting mechanism.

[0042] A further optimized solution is that a box door 2 is opened on the side wall of the box body 1, and a sliding plate 4 is slidably connected to the bottom of the box body 1. The sliding plate 4 slides out of the box body 1 through the box door 2. The measuring cylinder 5 is fixedly connected to the sliding plate 4. A first magnet 27 is fixedly connected to the side of the sliding plate 4 away from the box door 2, and a second magnet 28 is fixedly connected to the side wall of the box body 1 away from the box door 2. The first magnet 27 and the second magnet 28 are arranged correspondingly.

[0043] like Figure 2 and Figure 7 As shown, before testing, by opening the box door 2 and pulling out the sliding plate 4, the measuring cylinder 5 can be moved out of the box body 1, so as to facilitate reading of the water volume data. By providing the first magnet 27 and the second magnet 28, the sliding plate 4 can be pushed into the box body 1 to form a fixed connection with the box body 1, so as to ensure the stability of the position of the measuring cylinder 5, and facilitate the subsequent connection between the placement tube 6 and the measuring cylinder 5, and between the placement tube 6 and the circulation component.

[0044] A further optimized solution is that the fixing component includes an annular airbag 19, the outer wall of the annular airbag 19 is fixedly connected to the inner wall of the placement tube 6, the permeable concrete column is tightly fitted to the inner wall of the annular airbag 19, one end of the inflation tube 23 is connected to the annular airbag 19, and the other end of the inflation tube 23 is connected to the air supply equipment.

[0045] According to a further optimization scheme, the height of the annular airbag 19 and the permeable concrete column is the same as the height of the placement tube 6.

[0046] like Figure 2 and Figure 5 As shown, the end of the inflation tube 23 away from the annular airbag 19 passes through the placement tube 6 and the side wall of the box 1 in sequence and is connected to the air supply device. After the permeable concrete column is placed in the annular airbag 19 and the upper and lower surfaces of the permeable concrete column are aligned with the upper and lower surfaces of the placement tube 6, the air supply device is started to inflate the annular airbag 19, and the permeable concrete column is wrapped therein by the expansion of the annular airbag 19, and plays a fixing role. The complete fit between the annular airbag 19 and the permeable concrete column ensures that water can only penetrate from the top of the permeable concrete column.

[0047] As a further optimization scheme, part of the inflatable tube 23 in the box body 1 is arranged in a spiral form, and the placement tube 6 can be taken out at will by virtue of its own easy-to-stretch property.

[0048] A further optimized solution is that the circulation component includes a first connecting pipe 7 fixedly connected to the bottom of the constant pressure water tank 8, the first connecting pipe 7 is connected to the constant pressure water tank 8, the bottom of the first connecting pipe 7 is connected with a connecting pipe 25 and a second connecting pipe 24 in sequence, the connecting pipe 25 is provided with an electronic water valve 26, and the bottom of the second connecting pipe 24 is connected to the top of the placement tube 6.

[0049] like Figure 2-Figure 3 As shown, the main function of the electronic water valve 26 is to control whether the detection test starts or not. The electronic water valve 26 is opened by the controller, so that the water in the constant pressure water tank 8 flows to the top of the permeable concrete column through the connecting pipe 25 and the second connecting pipe 24, and the water permeability detection starts.

[0050] To further optimize the solution, a water tank 17 is also provided in the box body 1, and a water pump 16 is provided in the water tank 17. A water inlet 13 and a water outlet 12 are connected on the side wall of the constant pressure water tank 8. The water outlet 12 is located at the top of the side wall of the constant pressure water tank 8. The water outlet end of the water pump 16 is connected to the water inlet 13 through the water inlet pipe 15, and the water outlet 12 is connected to the water tank 17 through the return pipe 14.

[0051] like Figure 3As shown, before the electronic water valve 26 is opened, the water pump 16 is controlled by the controller to work, and the water pump 16 pumps the water in the water tank 17 into the constant pressure water tank 8 through the water inlet 13. After the water level in the constant pressure water tank 8 reaches the height of the water outlet 12, as the water pump 16 continues to work, the excess water will flow back from the water outlet 12 to the water tank 17. Therefore, during the detection process, the water pump 16 continues to work, and the water in the constant pressure water tank 8 will always be maintained at the same height as the water outlet 12, thereby achieving the effect of maintaining a constant water pressure on the top of the permeable concrete column.

[0052] According to a further optimization scheme, a water supply pipe 11 is fixedly passed through the top of the box body 1, an opening is provided at the top of the constant pressure water tank 8, and the bottom end of the water supply pipe 11 extends into the constant pressure water tank 8 through the opening.

[0053] like Figure 1 and Figure 2 As shown, water is added to the constant pressure water tank 8 through the water adding pipe 11. After the water volume reaches the height of the water outlet 12, as the water addition continues, the excess water will automatically flow from the water outlet 12 into the water tank 17, thereby adding water to the water tank 17. This arrangement can first ensure that the water in the constant pressure water tank 8 reaches the working depth, thereby reducing the volume of the water tank 17. The volume of the water tank 17 only needs to ensure that the water can circulate continuously during the detection process, thereby reducing the volume of the equipment.

[0054] A further optimized solution is that the seal between the placement tube 6 and the measuring cylinder 5 includes an annular groove 21 opened at the top of the measuring cylinder 5 and an annular boss 22 fixedly connected to the bottom of the placement tube 6, a rubber ring 20 is fixedly connected in the annular groove 21, and the annular boss 22 fits with the rubber ring 20.

[0055] like Figure 5 and Figure 6 As shown, as the constant pressure water tank 8 descends, the second connecting pipe 24 presses the placement tube 6 through the male downward pressure, so that the annular boss 22 at the bottom of the placement tube 6 is tightly pressed on the rubber ring 20, thereby preventing water from flowing out from the connection between the placement tube 6 and the measuring cylinder 5.

[0056] Similarly, the placement tube 6 and the second connecting tube 24 are also pressed against the rubber ring 20 through the boss, thereby preventing water from leaking out from the connection between the placement tube 6 and the second connecting tube 24.

[0057] A further optimized solution is that the lifting mechanism includes a plurality of slide rails 9 vertically fixedly connected to the box body 1, a constant pressure water tank 8 is slidably connected to the plurality of slide rails 9, and a telescopic cylinder 10 is fixedly connected between the constant pressure water tank 8 and the box body 1. The telescopic cylinder 10 controls the connection or disconnection between the second connecting pipe 24 and the placement pipe 6 by adjusting the height of the constant pressure water tank 8.

[0058] like Figure 3As shown, the telescopic end of the telescopic cylinder 10 is fixedly connected to the side wall of the constant pressure water tank 8 through a connecting plate, and the other end of the telescopic cylinder 10 is fixedly connected to the top of the box body 1. The telescopic cylinder 10 is connected to an external air supply device, and the height of the constant pressure water tank 8 can be changed by controlling the extension and contraction of the telescopic cylinder 10.

[0059] According to a further optimized solution, the thermostatic assembly includes a thermostatic adjustment module 3 fixedly connected to the side wall of the box body 1 and a temperature sensor 18 arranged in the box body 1 . The main function of the thermostatic adjustment module 3 is to adjust the temperature in the box body 1 .

[0060] like Figure 1 and Figure 2 As shown, the main function of the temperature sensor 18 is to detect the temperature in the box 1 and transmit the temperature value to the controller. The constant temperature adjustment module 3 adopts the refrigeration system and heating system of the conventional test box, so its working principle and working process are not repeated. The main function of the constant temperature adjustment module 3 is to adjust the temperature in the box 1 by receiving the instruction of the controller when the temperature sensor 18 detects the temperature change, and maintain the temperature constant.

[0061] The working process of this embodiment is as follows:

[0062] Before the test, a permeable concrete column with the same height as the placement tube 6 and an appropriate diameter was prepared as a test piece. Specifically, the permeable concrete test piece with a curing age of 28 days was first taken out from the standard curing room, and the test piece was immersed in water at 20±2℃. During the immersion, the water surface was 20mm~30mm higher than the upper surface of the test piece, and the immersion time was 24 hours; then the length, width and thickness of the upper surface of the test piece were measured with a steel ruler, and the measurements were taken three times respectively, and the average value was taken, accurate to 1mm, and the upper surface area A of the test piece was calculated.

[0063] After that, open the box door 2, pull the sliding plate 4 outward, and move the measuring cylinder 5 and the placement tube 6 connected to the sliding plate 4 out together. After that, remove the placement tube 6, place the permeable concrete column specimen into the annular airbag 19, and align the upper and lower surfaces of the permeable concrete column with the upper and lower surfaces of the placement tube 6. After that, start the air supply device to inflate the annular airbag 19, so that it expands and wraps the permeable concrete column. Place the placement tube 6 on the measuring cylinder 5, insert the annular boss on the placement tube 6 into the annular groove 21 at the top of the measuring cylinder 5, and push the sliding plate 4 back to its original position. After that, control the constant pressure water tank 8 to descend through the telescopic cylinder 10, so that the second connecting pipe 24 is correctly connected to the placement tube 6.

[0064] The box door 2 is closed, and the temperature in the box is adjusted to the target temperature by the controller controlling the constant temperature adjustment module 3. At the same time, appropriate water is added to the constant pressure water tank 8 and the water tank 17 through the water adding pipe 11. After that, the controller controls the water pump 16 to work and the electronic water valve 26 to open, and the detection is started. During the detection process, the water level in the placement tube 6 is kept stable.

[0065] After the water flow below the placement tube 6 stabilizes, record the amount of water Q flowing out within 90 seconds through the measuring cylinder 5, measure three times and take the average value; finally, use a steel ruler to measure the water level difference H between the placement tube 6 and the water level on the upper surface of the test piece, accurate to 1 mm, and use a thermometer to measure the temperature T of the water in the prism sealing device during the test, accurate to 1°C.

[0066] After the test time is over, lift the constant pressure water tank 8, open the box door 2, pull out the sliding plate 4, read the water volume in the measuring cylinder 5, and combine the size of the permeable concrete column and other parameters to obtain the permeability coefficient of the permeable concrete column specimen.

[0067] Embodiment 2:

[0068] Based on the experimental operation process of Example 1, the calculation method of the concrete permeability coefficient is as follows:

[0069] Principle: Based on Darcy's law, that is, the flow rate of fluid in concrete is proportional to the pressure gradient.

[0070] Steps: Calculate the permeability coefficient by measuring the amount of water passing through a unit area per unit time under a certain pressure gradient in a concrete specimen.

[0071] The formula is Kw = (QL) / (AΔh),

[0072] Where: Kw is the permeability coefficient, Q is the water flow velocity (m 3 / s), A is the permeable area (m 2 ), Δh is the water pressure difference between the two surfaces of the specimen (m), and L is the distance of water penetration (m, which is usually the thickness of the specimen).

[0073] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0074] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A concrete water permeability coefficient detection device, characterized in that: include: A box (1), wherein a constant temperature component is arranged in the box (1), and the constant temperature component is used to keep the box (1) in a constant temperature environment; A measuring cylinder (5), the measuring cylinder (5) is arranged in the box body (1), the top of the measuring cylinder (5) is detachably connected to a placement tube (6), the placement tube (6) is in communication with the measuring cylinder (5), a permeable concrete column is arranged in the placement tube (6), a fixing component is arranged in the placement tube (6), the fixing component is fitted with the outer wall of the permeable concrete column, and the fixing component is used to fix the permeable concrete column in the placement tube (6); A constant pressure water tank (8), wherein the bottom of the constant pressure water tank (8) is connected to a circulation component, the bottom of the circulation component is detachably connected to the top of the placement tube (6), and the circulation component is connected to the placement tube (6), and a lifting mechanism is provided between the constant pressure water tank (8) and the box body (1); The measuring cylinder (5) and the placement tube (6) and the placement tube (6) and the circulation component are connected respectively by the sealing components.

2. A concrete water permeability detection device according to claim 1, characterized in that: A box door (2) is provided on the side wall of the box body (1); a sliding plate (4) is slidably connected to the bottom of the box body (1); the sliding plate (4) slides out of the box body (1) through the box door (2); the measuring cylinder (5) is fixedly connected to the sliding plate (4); a first magnet (27) is fixedly connected to the side of the sliding plate (4) away from the box door (2); a second magnet (28) is fixedly connected to the side wall of the box body (1) away from the box door (2); the first magnet (27) and the second magnet (28) are arranged correspondingly.

3. A concrete water permeability detection device according to claim 1, characterized in that: The fixing assembly comprises an annular airbag (19), the outer wall of the annular airbag (19) is fixedly connected to the inner wall of the placement tube (6), the permeable concrete column is tightly fitted to the inner wall of the annular airbag (19), and one end of an inflation tube (23) is connected to the annular airbag (19), and the other end of the inflation tube (23) is connected to an air supply device.

4. A concrete water permeability detection device according to claim 3, characterized in that: The heights of the annular airbag (19) and the permeable concrete column are the same as the height of the placement tube (6).

5. A concrete water permeability detection device according to claim 1, characterized in that: The circulation component comprises a first connecting pipe (7) fixedly connected to the bottom of the constant pressure water tank (8); the first connecting pipe (7) is in communication with the constant pressure water tank (8); the bottom of the first connecting pipe (7) is in communication with a connecting pipe (25) and a second connecting pipe (24) in sequence; the connecting pipe (25) is provided with an electronic water valve (26); the bottom of the second connecting pipe (24) is in communication with the top of the placement pipe (6).

6. A concrete water permeability detection device according to claim 1, characterized in that: A water tank (17) is also provided in the box body (1), and a water pump (16) is provided in the water tank (17). A water inlet (13) and a water outlet (12) are connected on the side wall of the constant pressure water tank (8), and the water outlet (12) is located at the top of the side wall of the constant pressure water tank (8). The water outlet end of the water pump (16) is connected to the water inlet (13) through a water inlet pipe (15), and the water outlet (12) is connected to the water tank (17) through a return pipe (14).

7. A concrete water permeability detection device according to claim 1, characterized in that: A water supply pipe (11) is fixedly passed through the top of the box body (1), and an opening is provided at the top of the constant pressure water tank (8), and the bottom end of the water supply pipe (11) extends into the constant pressure water tank (8) through the opening.

8. A concrete water permeability detection device according to claim 1, characterized in that: The sealing member between the placement tube (6) and the measuring cylinder (5) comprises an annular groove (21) provided at the top of the measuring cylinder (5) and an annular boss (22) fixedly connected to the bottom of the placement tube (6); a rubber ring (20) is fixedly connected in the annular groove (21), and the annular boss (22) fits the rubber ring (20).

9. A concrete water permeability detection device according to claim 5, characterized in that: The lifting mechanism comprises a plurality of slide rails (9) vertically fixedly connected to the box body (1); the constant pressure water tank (8) is slidably connected to the plurality of slide rails (9); a telescopic cylinder (10) is fixedly connected between the constant pressure water tank (8) and the box body (1); the telescopic cylinder (10) controls the connection or disconnection between the second connecting pipe (24) and the placement pipe (6) by adjusting the height of the constant pressure water tank (8).

10. A concrete water permeability detection device according to claim 1, characterized in that: The thermostatic assembly comprises a thermostatic adjustment module (3) fixedly connected to the side wall of the box (1) and a temperature sensor (18) arranged in the box (1); the thermostatic adjustment module (3) mainly functions to adjust the temperature in the box (1).

Images