Concrete permeability coefficient detection equipment

Abstract

The utility model is applicable to the technical field of concrete detection, and provides concrete permeability coefficient detection equipment which comprises a main shell, a water storage tank is mounted at the top of the main shell, a pressurized water tank with an opening in the bottom is mounted in the main shell, and a pressurized water pipeline is mounted at the top of the pressurized water tank; a telescopic rod corresponding to the pressurized water pipeline is installed in the main shell, and a plug is installed at the output end of the telescopic rod. A water inlet pipeline and a backflow pipeline are connected between the pressurized water tank and the water storage tank; the bottom of the main shell is detachably connected with a permeation cylinder corresponding to the pressurized water tank, the bottom of the permeation cylinder is provided with a fixed end cover through a hoop, the bottom of the fixed end cover is provided with a collecting funnel, and the bottom of the collecting funnel is provided with a liquid leakage opening. According to the device, experimental data can be more accurate, and meanwhile, water for testing can be saved; on the other hand, the deviation of concrete water permeability detection under the influence of bubbles can be effectively avoided.

Description

Technical Field

[0001] The utility model is applicable to the technical field of concrete detection and provides a concrete water permeability coefficient detection device. Background Art

[0002] Concrete is a common building material used to construct buildings, roads, bridges and other projects. Its main components include cement, aggregate, sand and water. After mixing, pouring and curing, it forms a solid structure with good strength and durability. It is widely used in various construction projects.

[0003] The water permeability coefficient of concrete test block is one of the important indicators for evaluating the permeability of concrete. It usually refers to the rate at which water per unit area passes through the concrete test block per unit time, and the common unit is mm / hour. The water permeability coefficient test is usually completed through a water flow test, in which the concrete test block is exposed to a certain water pressure, the amount of permeated water and the thickness of the test block are measured, and then the water permeability coefficient is calculated according to a certain formula.

[0004] However, the current concrete water permeability coefficient test also has some shortcomings. The current common top-water permeability test device exposes water to the air after it permeates through the concrete. Since the concrete test block has an uneven surface and a large number of pores at the microscopic level, the evaporation of the water after the water slowly permeates will greatly affect the test of the concrete water permeability coefficient, causing deviations in the experimental data. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide a concrete permeability coefficient detection device, the purpose is to solve the problems raised in the background technology, the device includes a main shell, a water storage tank is installed on the top of the main shell, a pressure water chamber with a bottom opening is installed inside the main shell, and a pressurized water pipe is installed on the top of the pressure water chamber; a telescopic rod corresponding to the pressurized water pipe is installed inside the main shell, and a plug is installed on the output end of the telescopic rod.

[0006] A water inlet pipe and a return pipe are connected between the pressure water compartment and the water storage tank; a permeation cylinder corresponding to the pressure water compartment is detachably connected to the bottom of the main shell, a fixed end cover is installed at the bottom of the permeation cylinder through a clamp, a collecting funnel is installed at the bottom of the fixed end cover, and a liquid leakage port is provided at the bottom of the collecting funnel.

[0007] Furthermore, a water inlet valve is installed on the water inlet pipe, a reflux valve is installed on the reflux pipe, and water pumps are installed on both the water inlet pipe and the reflux pipe.

[0008] Furthermore, a ventilation pipe leading to the outside atmosphere is installed on the water tank, and a ventilation valve is installed on the ventilation pipe.

[0009] Furthermore, the ventilation valve is a one-way valve.

[0010] Furthermore, a water pressure sensor is installed inside the pressure water tank.

[0011] Furthermore, a controller is installed inside the main shell, and the controller is electrically connected to the telescopic rod and the water pressure sensor.

[0012] Furthermore, a test block is installed inside the permeation cylinder, and a plurality of sealing rubber rings are sleeved outside the test block.

[0013] Furthermore, a water-permeable base is installed on the top of the fixed end cover, and a plurality of water-permeable holes are provided on the water-permeable base.

[0014] In summary, in actual use, the staff first needs to make a test block out of concrete, then wrap multiple sealing rubber rings around the test block, and use a jack or other clamping device to install the test block in the permeable cylinder. Use bolts to install the permeable cylinder at the bottom of the main shell, and then use a clamp to install the fixed end cover at the bottom of the permeable cylinder. After completing all the installation work, control the water pump on the water inlet pipe to work, open the water inlet valve, and fill the water into the pressure tank. The liquid level gradually rises, passing through the pressure tank, the pressure pipe and the water storage pan. When the liquid level in the water storage pan rises to submerge the plug, the water injection is stopped, and the water inlet valve is closed. The telescopic rod drives the plug down and plugs it into the pressure pipe. As the pressure is pressed down, the water pressure in the pressure tank gradually increases. At this time, the experimenter places a measuring cup below the leakage port to measure the water that seeps out, and the experiment begins. After the experiment, the experimenter obtains the experimental process time and the amount of liquid in the measuring cup, and can calculate the water permeability coefficient. The experimenters controlled the telescopic rod to retract and gradually pulled out the plug. During this process, the ventilation valve could let air in to resist the negative pressure. After the plug was pulled out, the water pump on the reflux pipe was controlled to work and the reflux valve was opened to pump the water in the pressure tank back to the water storage tank.

[0015] Therefore, the device can prevent the evaporation of the permeable water on the test block from affecting the detection of the concrete water permeability coefficient, making the experimental data more accurate and saving the test water. On the other hand, the device can effectively avoid the deviation of the concrete water permeability detection under the influence of bubbles by pressing water on the top of the test block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the internal structure of the device;

[0017] Figure 2 This is a bottom view of the permeable base;

[0018] In the figure: 01-test block; 02-sealing rubber ring; 1-main shell; 2-water storage tank; 3-pressure water tank; 31-vent valve; 32-water inlet pipe; 321-water inlet valve; 33-return pipe; 331-return valve; 4-pressure water pipe; 5-water storage tray; 6-telescopic rod; 61-plug; 71-permeation cylinder; 72-fixed end cover; 73-clamp; 74-collecting funnel; 741-leakage port; 75-permeable base; 751-permeable hole; 8-water pressure sensor; 9-controller. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] See also Figure 1 , 2 The purpose of the utility model is to provide a concrete water permeability coefficient testing device, comprising a main housing 1, a water storage tank 2 is fixedly connected to the top of the main housing 1, and test water can be manually added into the water storage tank 2 for storage. A pressure water tank 3 with an opening at the bottom is installed inside the main housing 1, and the opening of the pressure water tank 3 leads to the outside of the main housing 1. A pressure water pipe 4 is fixedly connected to the top of the pressure water tank 3, and a water storage pan 5 is fixedly connected to the top of the pressure water pipe 4, and the bottom of the water storage pan 5 is connected to the pressure water tank 3 through the pressure water pipe 4.

[0021] An inlet pipe 32 and a return pipe 33 are connected between the pressure water tank 3 and the water storage tank 2. The inlet pipe 32 is responsible for injecting water into the pressure water tank 3, and the return pipe 33 can pump water to pump the remaining experimental water in the pressure water tank 3 back to the water storage tank 2.

[0022] A telescopic rod 6 is fixedly connected inside the main housing 1, and the output end of the telescopic rod 6 is vertically downward. The telescopic rod 6 is arranged at the top of the pressurized water pipe 4, and the telescopic rod 6 corresponds to the internal channel of the pressurized water pipe 4. The output end of the telescopic rod 6 is fixedly connected to a plug 61, which is an elastic rubber plug. Specifically, the telescopic rod 6 can be an electric push rod or other telescopic device with controllable stroke. The telescopic rod 6 can drive the plug 61 to move up and down, and the plug 61 can move closely into the inside of the pressurized water pipe 4, and a sealing structure is formed between the plug 61 and the inner wall of the pressurized water pipe 4. When the plug 61 moves downward, the water pressure in the pressurized water tank can be increased.

[0023] The bottom of the main shell 1 is detachably connected with a permeation cylinder 71, and both upper and lower ends of the permeation cylinder 71 are provided with openings. The permeation cylinder 71 is arranged corresponding to the pressure tank 3. Specifically, the top of the permeation cylinder 71 is connected to the main shell 1 by bolts, and the permeation cylinder 71 can be removed by removing the bolts at the top of the permeation cylinder 71. A test block 01 is installed in the permeation cylinder 71. The bottom of the permeation cylinder 71 is fixedly connected with a fixed end cover 72 through a clamp 73, and the bottom of the fixed end cover 72 is fixedly connected with a collecting funnel 74. The bottom of the collecting funnel 74 is provided with a leakage port 741, and the collecting funnel 74 is a funnel-shaped structure with a wide top and a narrow bottom.

[0024] Preferably, an inlet valve 321 is installed on the water inlet pipe 32, and a return valve 331 is installed on the return pipe 33. Water pumps are installed on both the water inlet pipe 32 and the return pipe 33. The water pump on the water inlet pipe 32 can provide power to transport the water in the water storage tank 2 to the pressure water tank 3. When the water is transported, the inlet valve 321 is in an open state, and the inlet valve 321 is closed after the water transport is completed. Similarly, the water pump on the return pipe 33 can provide power to transport the water in the pressure water tank 3 to the water storage tank 2 to recycle the water. When the water is transported, the return valve 331 is in an open state, and the return valve 331 is closed after the water transport is completed. This process can save experimental water, and the return valve 331 and the inlet valve 321 can prevent the internal water pressure of the pressure water tank 3 from being unstable when pressurized.

[0025] Preferably, the water tank 2 is provided with a ventilation pipe leading to the outside atmosphere, and a ventilation valve 31 is provided on the ventilation pipe. The water tank 2 is connected to the outside atmosphere through the ventilation pipe, so that when the plug 61 is pulled out by the telescopic rod 6, the pressure tank 3 generates negative pressure, causing damage to the valve or other sealing structures, resulting in reduced sealing effect. When the equipment is in working state, the ventilation valve 31 is in a closed state. When the test is completed and the plug 61 is pulled out by the telescopic rod 6, the ventilation valve 31 is opened, and the outside air can enter the pressure tank 3, so that the plug 61 can be pulled out smoothly.

[0026] Preferably, the vent valve 31 is a one-way valve. The one-way valve allows outside air to enter the pressure water tank 3 only when the pressure water tank 3 is under negative pressure. The use of a mechanical one-way valve instead of a controlled electromagnetic valve can save equipment costs.

[0027] Preferably, a water pressure sensor 8 is fixedly connected inside the water pressure chamber 3. The water pressure sensor 8 can realize accurate monitoring of the water pressure in the water pressure chamber 3.

[0028] Preferably, a controller 9 is fixedly connected inside the main housing 1, and the controller 9 is electrically connected to the telescopic rod 6 and the water pressure sensor 8. Since water will continuously penetrate into the test block 01 during the experiment, the water pressure will gradually decrease, and the water pressure sensor 8 will transmit the change of water pressure and the value to the controller 9 in real time, and then the controller 9 will control the telescopic rod 6 to extend appropriately to ensure that the water pressure in the water pressure chamber 3 is stable at a specified value.

[0029] Preferably, a test block 01 is installed inside the permeation cylinder 71, and a plurality of sealing rubber rings 02 are sleeved outside the test block 01. The sealing rubber rings 02 are sleeved between the outside of the test block 01 and the inner wall of the permeation cylinder 71, so that a good seal can be achieved between the test block 01 and the permeation cylinder 71 to prevent the failure of the experiment caused by water leakage.

[0030] Preferably, a water-permeable base 75 is installed on the top of the fixed end cover 72 , and a plurality of water-permeable holes 751 are provided on the water-permeable base 75 .

[0031] In summary, in actual use, the staff first needs to make the concrete into a test block 01, then wrap a plurality of sealing rubber rings 02 around the test block 01, and install the test block 01 in the infiltration tube 71 using a jack or other clamping device. The infiltration tube 71 is installed at the bottom of the main shell 1 using bolts, and then the fixed end cover 72 is installed at the bottom of the infiltration tube 71 using a clamp 73. After all the installation work is completed, the water pump on the water inlet pipe 32 is controlled to work, the water inlet valve 321 is opened, and water is injected into the pressure water tank 3. The liquid level gradually rises, passing through the pressure water tank 3, the pressure water pipe 4 and the water storage pan 5 respectively. When the liquid level in the water storage pan 5 rises to submerge the plug 61, the water injection is stopped, and the water inlet valve 321 is closed at this time. The telescopic rod 6 drives the plug 61 to descend and plug it into the pressure water pipe 4. With the downward pressure, the water pressure in the pressure water tank 3 gradually increases. At this time, the experimenter places a measuring cup below the leakage port 741 to measure the water that seeps out, and the experiment begins. After the experiment, the experimenter obtained the experimental process time and the amount of liquid in the measuring cup, and calculated the water permeability coefficient. The experimenter controlled the telescopic rod 6 to retract and gradually pulled out the plug 61. During this process, the vent valve 31 could let air in to resist the negative pressure. After the plug 61 was pulled out, the water pump on the return pipe 33 was controlled to work and the return valve 331 was opened to pump the water in the pressure tank 3 back to the water storage tank 2.

[0032] Therefore, the device can prevent the evaporation of the permeable water on the test block from affecting the detection of the concrete water permeability coefficient, making the experimental data more accurate and saving the test water. On the other hand, the device can effectively avoid the deviation of the concrete water permeability detection under the influence of bubbles by pressing water on the top of the test block.

[0033] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A concrete water permeability coefficient detection device, comprising a main housing (1), characterized in that: A water storage tank (2) is installed on the top of the main shell (1); a water pressure chamber (3) with an opening at the bottom is installed inside the main shell (1); a water pressure pipe (4) is installed on the top of the water pressure chamber (3); a telescopic rod (6) corresponding to the water pressure pipe (4) is installed inside the main shell (1); a plug (61) is installed at the output end of the telescopic rod (6); A water inlet pipe (32) and a return pipe (33) are connected between the water pressure chamber (3) and the water storage tank (2); a permeation cylinder (71) corresponding to the water pressure chamber (3) is detachably connected to the bottom of the main shell (1); a fixed end cover (72) is installed at the bottom of the permeation cylinder (71) via a clamp (73); a collecting funnel (74) is installed at the bottom of the fixed end cover (72); and a liquid leakage port (741) is provided at the bottom of the collecting funnel (74).

2. The concrete water permeability coefficient detection device according to claim 1, characterized in that: The water inlet pipe (32) is installed with a water inlet valve (321), the return pipe (33) is installed with a return valve (331), and both the water inlet pipe (32) and the return pipe (33) are installed with water pumps.

3. The concrete water permeability coefficient detection device according to claim 1, characterized in that: The water storage tank (2) is provided with a ventilation pipe leading to the outside atmosphere, and a ventilation valve (31) is provided on the ventilation pipe.

4. The concrete water permeability coefficient detection device according to claim 3 is characterized in that: The ventilation valve (31) is a one-way valve.

5. The concrete water permeability coefficient detection device according to claim 1, characterized in that: A water pressure sensor (8) is installed inside the water pressure chamber (3).

6. The concrete water permeability coefficient detection device according to claim 5, characterized in that: A controller (9) is installed inside the main housing (1), and the controller (9) is electrically connected to the telescopic rod (6) and the water pressure sensor (8).

7. The concrete water permeability coefficient detection device according to claim 1, characterized in that: A test block (01) is installed inside the permeation cylinder (71), and a plurality of sealing rubber rings (02) are sleeved outside the test block (01).

8. The concrete water permeability coefficient detection device according to claim 1, characterized in that: A water-permeable base (75) is installed on the top of the fixed end cover (72), and a plurality of water-permeable holes (751) are provided on the water-permeable base (75).

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