Impermeability and air permeability testing all-in-one machine

Abstract

The utility model relates to the technical field of concrete piece testing equipment, in particular to an impermeability and air permeability testing all-in-one machine which comprises a rack and a plurality of testing assemblies fixedly arranged at the top of the rack. The test assembly comprises a bottom plate fixedly connected with the workbench, a cylinder fixedly arranged on the bottom plate, a cover plate used for sealing an opening in the top of the cylinder, and a U-shaped glass tube; a water inlet is formed in the center of the bottom plate; a first sealing ring capable of covering the upper end face of the barrel is embedded in the end, close to the bottom plate, of the cover plate, an air outlet is formed in the other end of the bottom plate, a manual ball valve is fixedly installed on the air outlet, and the air outlet end of the manual ball valve is communicated with an air inlet of the U-shaped glass tube. A screw rod is detachably and fixedly connected between the bottom plate and the cover plate; the technical problems that existing testing equipment is complex in operation and long in consumed time can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete component testing equipment, specifically an integrated machine for testing impermeability gas. Background Technology

[0002] Concrete is widely used in civil engineering. The presence of pores in concrete affects not only its strength but also its impermeability, airtightness, corrosion resistance, and other properties. Durability is the most important performance indicator of concrete, determining the lifespan of concrete structures, and has therefore long been a focus of attention. Permeability is a crucial factor in determining concrete durability; generally, the lower the permeability, the better the durability. Concrete permeability refers to the ease with which gases, liquids, or ions penetrate, diffuse, or migrate through the pore structure of concrete under the influence of pressure, chemical potential, or electric field. Permeability testing of concrete specimens includes various methods such as air pressure permeation, gas permeation tests, water permeability tests, and staining permeation tests. In general, these methods observe the amount of liquid or gas that permeates through the pores of concrete under certain conditions to calculate and evaluate the permeability of the tested concrete specimen. The water permeation method assesses permeability by measuring the amount of water that permeates through concrete within a certain time period, providing intuitive and easy-to-understand results. However, water permeation can cause corrosion and material migration in the concrete, leading to inaccurate test results. While gas infiltration is less destructive to concrete structures and provides more accurate results, its testing procedures are rigorous and complex, requiring precise control of gas pressure and flow rate, and are generally time-consuming. Therefore, there is an urgent need for a testing device that provides accurate results, is easy to operate, and is quick to use. Utility Model Content

[0003] This invention provides an integrated machine for testing impermeability gas, which can solve the technical problems of complex operation and long time consumption of existing testing equipment.

[0004] This application provides the following technical solution:

[0005] An integrated gas permeability testing machine includes a frame and several testing components fixedly mounted on the top of the frame. A workbench is fixedly mounted on the top of the frame. Each testing component includes a base plate fixedly connected to the workbench, a cylinder fixedly mounted on the base plate, a cover plate for sealing the top opening of the cylinder, and a U-shaped glass tube. A water inlet is opened at the center of the base plate. A first sealing ring covering the upper surface of the cylinder is embedded in one end of the cover plate near the base plate. An air outlet is opened at the other end of the base plate, and a manual ball valve is fixedly installed on the air outlet. The air outlet of the manual ball valve is connected to the air inlet of the U-shaped glass tube. A screw rod is detachably fixedly connected between the base plate and the cover plate.

[0006] Beneficial effects:

[0007] 1. Simplified Operation: The entire installation process is quick and easy, requiring no complicated tools or steps, by placing the concrete specimen to be tested inside the cylinder, then fastening the cover plate and locking it with double-ended screws and nuts. High-pressure water jets impact the bottom of the concrete specimen, causing water molecules to gradually penetrate the concrete pores and compress the gas inside the cylinder into the U-shaped glass tube, creating a liquid height difference. Testers can then directly read the data and calculate the concrete specimen's impermeability, reducing tedious data processing.

[0008] 2. Reduced Testing Time: This integrated machine uses a high-pressure water jet generated by a high-pressure flushing device for permeation testing. Compared to the traditional gas permeation method, it not only avoids the complex air pressure control required for gas permeation but also significantly reduces testing time due to the rapid penetration of water molecules into concrete pores. The water permeating into the concrete specimen forces excess gas into a U-shaped glass tube to display the permeation results. This not only shortens testing time but also improves accuracy. Furthermore, the first sealing ring ensures a relatively sealed environment inside the tube, preventing external factors from interfering with the test results and guaranteeing accuracy.

[0009] In summary, the integrated gas permeability testing machine in this solution not only simplifies the operation process of concrete specimen permeability testing but also significantly shortens the testing time, improving testing efficiency and accuracy. This improvement provides an efficient and convenient solution for concrete durability assessment, suitable for various scenarios such as laboratory and field testing.

[0010] Furthermore, as an improvement, the test assembly also includes a second sealing ring for sealing the sidewalls of the concrete specimen.

[0011] Beneficial effects: The second sealing ring effectively prevents high-pressure water from seeping through the gap between the specimen and the cylinder, ensuring that water can only penetrate through the pores of the concrete specimen itself, thus improving the controllability of the testing conditions. This, in turn, improves the accuracy and reliability of the test results.

[0012] Furthermore, as an improvement, a high-pressure water flushing device is fixedly installed inside the frame, and several control valves for controlling the water flushing of several test components are fixedly installed on the frame.

[0013] Beneficial effects: The high-pressure water flushing device, integrated within the frame, provides stable water pressure. Multiple control valves allow for individual control of the flushing onto different test components, enabling simultaneous or independent testing of multiple concrete specimens. This meets diverse testing needs and improves equipment utilization. Testing personnel can easily switch and control the flushing process of different test components using only the control valves, reducing operational complexity and enhancing the user experience.

[0014] Furthermore, as an improvement, it also includes a mounting bracket for fixing the U-shaped glass tube, on which an upper mounting plate for fixing the upper part of the U-shaped glass tube and a lower mounting plate for fixing the lower part of the U-shaped glass tube are provided.

[0015] Beneficial effects: The double-layer fixing design of the upper and lower mounting plates ensures the absolute stability of the U-shaped glass tube throughout the testing process, eliminating shaking caused by external vibrations or improper operation, and improving the stability of the testing environment. This results in more accurate and reliable test results, reducing sources of error. The stable fixing method also protects the U-shaped glass tube from physical damage, extends its service life, and enhances the durability of the entire testing equipment.

[0016] Furthermore, as an improvement, support legs for supporting the entire device are fixedly installed around the bottom of the frame.

[0017] Beneficial effects: The support feet ensure stable placement of the rack under different ground conditions, preventing equipment swaying caused by uneven ground or slight vibrations, improving stability during testing, and helping to ensure the accuracy of test results.

[0018] Furthermore, as an improvement, casters with locking function are fixedly installed around the bottom of the frame.

[0019] Beneficial effect: The omnidirectional wheels improve the mobility of the testing equipment. Attached Figure Description

[0020] Figure 1 This is a front view of Embodiment 1 of the integrated machine for testing the impermeability of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 for Figure 2 Bottom view of the middle cover plate 203;

[0023] Figure 4 for Figure 2 Top view of the middle cylinder 202 and the bottom plate 201. Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method:

[0025] The markings in the accompanying drawings include: frame 1, workbench 101, test assembly 2, base plate 201, cylinder 202, cover plate 203, U-shaped glass tube 204, water inlet 205, first sealing ring 206, screw 207, nut one 208, nut two 209, manual ball valve 210, second sealing ring 211, control valve 212, hose 213, concrete specimen 3, mounting frame 4, upper mounting plate 401, lower mounting plate 402, and support leg 5.

[0026] Example 1

[0027] like Figures 1-4 As shown, the integrated gas permeability testing machine includes a frame 1 and six testing components 2 fixedly mounted on the top of the frame 1. Figure 1 Only the three test components side by side are fully displayed.

[0028] The frame 1 is a box structure made of sturdy metal material, providing an installation environment for the test component 2 and serving as a stable foundation for the integrated gas permeability testing machine. A square plate-shaped workbench 101 is screwed to the top of the frame 1, serving as the top panel of the frame 1 for the specific mounting of the test component 2.

[0029] Test assembly 2 includes a base plate 201 screwed to the workbench 101, a cylindrical body 202 fixedly mounted on the base plate 201, a cover plate 203 for sealing the top opening of the cylindrical body 202, and a U-shaped glass tube 204. The cylindrical body 202 is a cylindrical structure with openings at both the bottom and top, and is hollow inside. The bottom of the cylindrical body 202 is integrally formed with the base plate 201. The base plate 201 has six threaded holes along its circumference, and a water inlet 205 is located at the center of the base plate 201. The cover plate 203 also has six threaded holes along its circumference that correspond one-to-one with the threaded holes on the base plate 201. A concave annular groove is provided on the cover plate 203, and a first sealing ring 206 made of rubber material that can cover the top of the cylindrical body 202 is embedded in the annular groove. A detachable and fixed screw 207 is provided between the base plate 201 and the cover plate 203. The screw 207 is a double-ended screw 207. Specifically, after the top opening of the upper cylinder 202 is sealed with the cover plate 203, the two ends of the screw 207 are threadedly connected to the threaded holes located on the base plate 201 and the cover plate 203, respectively. The function of the screw 207 is to lock the cover plate 203 so that the inside of the cylinder 202 is completely sealed. In this embodiment, a total of 6 sets of connecting components are provided between the base plate 201 and the cover plate 203. Each set of connecting components includes two double-ended screws 207 that are threaded to the threaded holes on the plate and the cover plate 203 respectively, a nut 208 for connecting the two double-ended screws 207, and a nut 209 that is threaded onto the double-ended screws 207 and protrudes from one end of the cover plate 203. The nut 208 is designed to adapt to the height of the cylinder 202 and can be adjusted according to the height of the concrete specimen 3 to be tested. The nut 209 further presses the cover plate 203 to create a completely sealed environment and prevent gas from leaking out of the cylinder 202.

[0030] An air outlet is opened at the top of the cover plate 203 and a manual ball valve 210 is fixedly installed on the air outlet. The air outlet of the manual ball valve 210 is connected to the air inlet of the U-shaped glass tube 204 through a hose 213.

[0031] The test assembly 2 also includes a second sealing ring 211 for sealing the sidewalls of the concrete specimen 3. For example, in this embodiment, the concrete specimen 3 to be tested has a frustum-shaped structure with an upper diameter of 175 mm, a lower diameter of 185 mm, and a height of 150 mm. A second sealing ring 211 is fitted on both the upper and lower parts of the concrete specimen 3, and the second sealing ring 211 is in close contact with the outer wall surface of the concrete specimen 3 and the inner wall surface of the cylinder 202.

[0032] A high-pressure water flushing device is fixedly installed inside the frame 1. The outlet of the high-pressure water flushing device is connected to the inlet 205 located at the center of the base plate 201 in the six test components 2 via pipes. Six control valves 212 are fixedly installed on the frame 1 to control the flushing of water into the cylinders 202 in the six test components 2. By rotating the control valves 212, the high-pressure water flow generated in the high-pressure water flushing device can be flushed into the bottom of the concrete specimen 3 located in the cylinder 202. The high-pressure water flushing device includes a water tank, a booster, water supply pipes, and a water pump. It is existing equipment, and its specific structure will not be described in detail here.

[0033] The gas permeability testing integrated machine in this embodiment also includes a mounting bracket 4 for fixing the U-shaped glass tube 204. The mounting bracket 4 is fixed to the wall with screws. An upper mounting plate 401 for fixing the upper part of the U-shaped glass tube 204 and a lower mounting plate 402 for fixing the lower part of the U-shaped glass tube 204 are fixedly installed on the mounting bracket 4. Specifically, slots are opened on both sides of the mounting bracket 4, and plugs are provided at both ends of the upper mounting plate 401 and the lower mounting plate 402. The plugs are engaged with the slots for fixation.

[0034] Support legs 5 are fixedly installed around the bottom of the frame 1 to support the entire device. The support legs 5 are frustum-shaped metal structures, which provide stable support for the testing process and avoid the impact of shaking.

[0035] The specific application process is as follows:

[0036] In use, first place the concrete specimen 3 to be tested into the cavity inside the cylinder 202. The side wall of the concrete specimen 3 is fitted with a second sealing ring 211. Then, fasten the cover plate 203 to seal the top opening of the cylinder 202. Note that the first sealing ring 206 on the cover plate 203 should be aligned and cover the top of the cylinder 202. Then, use the double-ended screw 207 and nut to lock the cover plate 203 onto the cylinder 202, creating a relatively sealed testing environment for the cavity inside the cylinder 202. Then, the control valve 212 is turned so that the high-pressure water flow generated in the high-pressure flushing device impacts the bottom of the concrete specimen 3 through the water inlet 205 in the center of the base plate 201. After a period of time, water molecules gradually penetrate the pores of the concrete and squeeze the gas in the cylinder 202 into the U-shaped glass tube 204 through the air outlet on the cover plate 203, the manual ball valve 210, and the hose 213. This causes the originally level liquid in the U-shaped glass tube 204 to form a height difference, thereby calculating the impermeability data of the concrete specimen 3.

[0037] Example 2

[0038] The difference between this embodiment and Embodiment 1 is that casters with locking function are fixedly installed around the bottom of the frame to improve the mobility of the equipment.

[0039] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An integrated machine for anti-permeability gas test, comprising a frame and a plurality of test assemblies fixedly arranged on the top of the frame, characterized in that: A workbench is fixedly arranged on the top of the frame, the test assembly comprises a bottom plate fixedly connected with the workbench, a cylinder fixedly arranged on the bottom plate, a cover plate for sealing the top opening of the cylinder, and a U-shaped glass tube; A water inlet is formed in the center of the bottom plate, a first sealing ring capable of covering the upper end surface of the cylinder is embedded on one end of the cover plate close to the bottom plate, an air outlet is formed on the other end of the bottom plate, and a manual ball valve is fixedly installed on the air outlet, the air outlet end of the manual ball valve communicates with the air inlet of the U-shaped glass tube, and a screw is detachably and fixedly connected between the bottom plate and the cover plate.

2. The anti-penetration gas test all-in-one machine according to claim 1, characterized in that: The test assembly further comprises a second sealing ring for sealing the side wall of the concrete test piece.

3. The anti-penetration gas test all-in-one machine according to claim 2, characterized in that: A high-pressure water flushing device is fixedly arranged in the frame, and a plurality of control valves for respectively controlling the water flushing of the plurality of test assemblies are fixedly arranged on the frame.

4. The anti-penetration gas test all-in-one machine according to claim 3, characterized in that: The mounting rack for fixing the U-shaped glass tube is further provided, and an upper mounting plate for fixing the upper part of the U-shaped glass tube and a lower mounting plate for fixing the lower part of the U-shaped glass tube are arranged on the mounting rack.

5. The anti-penetration gas test all-in-one machine according to claim 4, characterized in that: Supporting legs for supporting the entire device are fixedly arranged around the bottom of the frame.

6. The anti-penetration gas test all-in-one machine according to claim 4, characterized in that: Universal wheels with locking function are fixedly arranged around the bottom of the frame.

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