Concrete permeable rate detection device
The design of the clamping tube and sealing groove structure solves the problem of cumbersome sealant filling operation, and achieves the convenience and data accuracy of the concrete specimen permeability test.
Patent Information
- Application Number
- CN202422268306.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-09-18
AI Technical Summary
In the prior art, the operation of using sealant to fill the gap between the wrapped concrete and the prismatic sealing device is cumbersome and easily leads to large errors in the permeability test results, affecting the accuracy of the data.
A clamping tube and sealing groove structure is adopted, and the first sealing groove and the first sealing pressure ring are used in conjunction with the first sealing ring. The gap is narrowed by tightening the fastening bolts, and the second sealing groove, the second sealing pressure ring and the sealing ring are combined to achieve effective sealing of the PVC film layer concrete test block.
The sealing operation is simplified, the difficulty of cleaning the water-stopping mortar is reduced, and the operational convenience and data accuracy of the permeability test are improved.
Smart Images
Figure CN223320244U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of concrete water permeability detection equipment, in particular to a concrete water permeability detection device. Background Art
[0002] Permeable concrete refers to a porous concrete structure typically composed of a single-graded aggregate, water, admixtures, and related cementitious materials mixed in specific proportions. Permeable concrete offers sound absorption and noise reduction, as well as breathability and water permeability. It is widely used in projects such as sidewalks, plazas, non-motorized vehicle lanes, and parking lots, effectively addressing urban waterlogging and groundwater recharge. According to the description of the steps for the permeability coefficient determination test in the industry standard JC / T2558-2020 "Permeable Concrete": it includes step 1, taking the specimen for the permeability coefficient test out of the standard curing room when the curing age is 27 days, and then immersing the specimen in 20℃ ± 2℃ water. During immersion, the water surface should be 20mm to 30mm higher than the upper surface of the specimen, and the immersion time should be 24 hours. The specimen should be tested for permeability coefficient at the age of 28 days; step 2, using a steel ruler to measure the upper surface length, width and thickness of the cubic specimen that has reached the age, measure twice respectively, take the average value, accurate to 1mm, and calculate the upper surface area of the specimen. Then, install the device into the prismatic seal. Open the water supply valve to allow water to enter the container. Adjust the water inlet to maintain a certain water level in the prismatic seal, approximately 150 mm. After the water outflow from the overflow port of the prismatic seal stabilizes, use a measuring container to collect water from the outlet. Record the amount of water flowing out over 90 seconds. Measure three times and take the average value. In step three, use a steel ruler to measure the difference between the water level in the prismatic seal and the water level on the top surface of the specimen to an accuracy of 1 mm. Use a thermometer to measure the water temperature in the prismatic seal during the test to an accuracy of 1°C.
[0003] The test method does not provide a detailed description of the prismatic seal device, but the objective is to maintain a water column of approximately 150 mm above the concrete specimen and record the amount of water that passes through the concrete specimen from its upper surface to its lower surface within 90 seconds. This demonstrates that the prismatic seal device must provide a clamping and sealing effect on the concrete specimen to prevent water from above the concrete specimen from passing through the gap between the sides of the concrete specimen and the prismatic seal device. In practice, wrapping the sides of the concrete specimen with plastic wrap or other materials, then filling the gap between the wrapped concrete and the prismatic seal device with sealant, can ensure data accuracy. However, for manufacturers, repeatedly filling the gap between the wrapped concrete and the prismatic seal device with sealant is labor-intensive and can lead to insufficient sealant filling, resulting in discrepancies between two water permeability tests exceeding the error threshold. Furthermore, cleaning the sealant from the prismatic seal device after completing a water permeability test on a concrete specimen is a tedious process. Therefore, there is room for improvement in the prior art, so as to more conveniently seal the gap between the wrapped concrete and the prism sealing device, thereby improving the convenience of operating the water permeability test of the concrete test block. Summary of the Invention
[0004] In view of the deficiencies in the prior art, the present invention provides a concrete water permeability detection device that can easily seal the gap between the wrapped concrete and the prism sealing device, so as to overcome the defects in the prior art.
[0005] The technical solution adopted by the utility model is: a concrete water permeability detection device, including a water holding pipe, a clamping pipe is arranged below the water holding pipe, a first sealing groove is opened at the bottom of the clamping pipe along the direction from bottom to top, a first sealing pressure ring is arranged in the first sealing groove, a first connecting ring is arranged on the bottom end of the first sealing pressure ring, a second connecting ring is arranged on the outside of the clamping pipe, a first fastening bolt is arranged on the second connecting ring and the first connecting ring, the inscribed circle diameter of the top of the first sealing groove gradually decreases as the height of the first sealing groove increases, the inscribed circle diameter of the top of the first sealing pressure ring gradually increases as the height of the first sealing pressure ring increases, a first sealing ring is arranged between the top of the first sealing groove and the top of the first sealing pressure ring, the first sealing ring adopts an annular structure made of graphite packing, a third connecting ring is arranged on the bottom end of the water holding pipe, a fourth connecting ring is arranged on the top of the clamping pipe, and a second fastening bolt is arranged on the fourth connecting ring and the third connecting ring.
[0006] Preferably, it also includes a bracket, a supporting plate is provided on the bracket, a through hole is provided on the supporting plate below the clamping tube, a water storage hopper is provided on the through hole and the supporting plate, a fifth connecting ring is provided on the outside of the water storage hopper, and a pressure sensor is provided on the fifth connecting ring and the supporting plate.
[0007] Preferably, the water holding pipe adopts a rectangular tubular structure made of a transparent material, a scale layer is provided on the outside of the water holding pipe, the scale layer extends along the bottom end of the water holding pipe toward the top end of the water holding pipe, the clamping tube adopts a rectangular tubular structure, the first sealing groove adopts an annular structure, the first sealing groove and the inner cavity of the clamping tube are connected, and a first connecting frame is provided between the water holding pipe and the bracket.
[0008] Preferably, a water storage tank is provided above the water holding pipe, a second connecting frame is provided between the water storage tank and the bracket, a first drain pipe is provided at the bottom of the water holding pipe, an outlet end of a first regulating water pipe is provided on the water holding pipe above the first drain pipe, an inlet end of a second regulating water pipe is provided on the bottom end of the water storage tank, the inlet end of the first regulating water pipe and the inlet end of the first drain pipe are both connected with the second regulating water pipe, a waste liquid bucket is provided on the outlet end of the second regulating water pipe, the open end of the waste liquid bucket is located below the water storage hopper, a second drain pipe is provided on the bottom end of the water storage hopper, stop valves are respectively provided on the first drain pipe and the second drain pipe, regulating valves are respectively provided on the second regulating water pipe between the first regulating water pipe and the water storage tank and the second regulating water pipe between the first regulating water pipe and the first drain pipe.
[0009] Preferably, a delivery pump is provided on the second regulating water pipe between the first drain pipe and the waste liquid barrel, one end of the first drain pipe located inside the water storage pipe faces the clamping pipe, one end of the first drain pipe located inside the water storage pipe is located above the clamping pipe, and a liquid level sensor is provided on the waste liquid barrel.
[0010] Preferably, a second sealing groove is provided on one end of the fourth connecting ring facing the third connecting ring, the second sealing groove adopts an annular groove structure, a second sealing pressure ring is provided in the second sealing groove, a second sealing ring is provided at the bottom of the second sealing pressure ring and on the fourth connecting ring, and the second sealing ring adopts an annular structure made of rubber material.
[0011] Preferably, a concrete test block is provided on the inner side of the clamping tube, a PVC film layer is provided on the side of the concrete test block, and the first sealing groove and the PVC film layer are connected.
[0012] The beneficial effects of the utility model are: first, the utility model reduces the distance between the second connecting ring and the first connecting ring by tightening the first fastening bolt, thereby reducing the gap between the first sealing groove and the first sealing pressure ring, and then causing the first sealing ring to deform toward the concrete test block, thereby facilitating sealing the gap between the concrete test block wrapped with the PVC film layer and the clamping tube, and reducing the difficulty of cleaning the water-stop putty.
[0013] Secondly, the waste liquid barrel of the utility model is provided with a liquid level sensor, and the installation of the liquid level sensor is convenient for feeding back the liquid level height.
[0014] The utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improved work efficiency, good social and economic benefits, and is a product that is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of the present utility model.
[0016] Figure 2 for Figure 1 Enlarged schematic diagram of detail A. DETAILED DESCRIPTION
[0017] like Figures 1 to 2 As shown, a concrete permeability detection device includes a water pipe 1, a clamping pipe 2 is provided below the water pipe 1, a first sealing groove 3 is opened at the bottom of the clamping pipe 2 along the direction from bottom to top, a first sealing pressure ring 4 is provided in the first sealing groove 3, a first connecting ring 5 is provided on the bottom end of the first sealing pressure ring 4, a second connecting ring 6 is provided on the outside of the clamping pipe 2, and a first fastening bolt 7 is provided on the second connecting ring 6 and the first connecting ring 5. The inscribed circle diameter of the top of the first sealing groove 3 gradually decreases as the height of the first sealing groove 3 increases, and the inscribed circle diameter of the top of the first sealing pressure ring 4 gradually increases as the height of the first sealing pressure ring 4 increases. A first sealing ring 8 is provided between the top of the first sealing groove 3 and the top of the first sealing pressure ring 4. The first sealing ring 8 adopts an annular structure made of graphite packing, a third connecting ring 9 is provided on the bottom end of the water pipe 1, a fourth connecting ring 10 is provided on the top of the clamping pipe 2, and a second fastening bolt 11 is provided on the fourth connecting ring 10 and the third connecting ring 9. A concrete test block 34 is provided on the inner side of the clamping tube 2 , a PVC film layer 35 is provided on the side of the concrete test block 34 , and the first sealing groove 3 and the PVC film layer 35 are connected.
[0018] This product also includes a bracket 12, which is provided with a support plate 13. A through hole 14 is provided on the support plate 13 below the clamping tube 2. A water hopper 15 is provided above the through hole 14 and the support plate 13. A fifth connecting ring 16 is provided outside the water hopper 15. Pressure sensors 17 are provided on the fifth connecting ring 16 and the support plate 13. There are multiple pressure sensors 17, which are evenly distributed in a star shape outside the central axis of the through hole 14. The central axis of the through hole 14, the central axis of the water hopper 15, and the central axis of the fifth connecting ring 16 are coaxial. The water hopper 15 is a cylindrical structure with an open top. The diameter of the inner cavity at the bottom of the water hopper 15 gradually decreases as the height of the water hopper 15 decreases. The water pipe 1 adopts a rectangular tubular structure made of transparent material, and a scale layer 18 is provided on the outside of the water pipe 1 to facilitate observation of the liquid height in the water pipe 1; the scale layer 18 extends along the bottom end of the water pipe 1 toward the top end of the water pipe 1, the clamping tube 2 adopts a rectangular tubular structure, and the first sealing groove 3 adopts an annular structure. The first sealing groove 3 is connected to the inner cavity of the clamping tube 2, and a first connecting frame 19 is provided between the water pipe 1 and the bracket 12.
[0019] Furthermore, a water storage tank 20 is provided above the water storage pipe 1, a second connecting frame 21 is provided between the water storage tank 20 and the bracket 12, a first drain pipe 22 is provided at the bottom of the water storage pipe 1, an outlet end of a first regulating water pipe 23 is provided on the water storage pipe 1 above the first drain pipe 22, an inlet end of a second regulating water pipe 24 is provided on the bottom end of the water storage tank 20, the inlet end of the first regulating water pipe 23 and the inlet end of the first drain pipe 22 are both connected to the second regulating water pipe 24, and the second regulating water pipe 24 between the first regulating water pipe 23 and the water storage tank 20 is connected to the second regulating water pipe 24. A regulating valve 28 is provided on each of the second regulating water pipes 24 between the first regulating water pipe 23 and the first drain pipe 22. The second drain pipe 26 facilitates draining the water stored in the water hopper 15. This facilitates utilizing the water stored in the water tank 20 to adjust the initial liquid level in the water pipe 1 using the first regulating water pipe 23, the second regulating water pipe 24, the regulating valve 28 between the first regulating water pipe 23 and the first drain pipe 22, and the regulating valve 28 between the first regulating water pipe 23 and the water tank 20, thereby ensuring that the liquid level in the upper layer of the concrete test block 34 reaches a predetermined range. A waste liquid bucket 25 is provided at the outlet of the second regulating water pipe 24. The open end of the waste liquid bucket 25 is located below the water hopper 15. A second drain pipe 26 is provided at the bottom of the water hopper 15. A shut-off valve 27 is provided on each of the first drain pipe 22 and the second drain pipe 26. A delivery pump 29 is provided on the second regulating water pipe 24 between the first drain pipe 22 and the waste liquid barrel 25. One end of the first drain pipe 22 located inside the water pipe 1 faces the clamping pipe 2, and one end of the first drain pipe 22 located inside the water pipe 1 is located above the clamping pipe 2. A liquid level sensor 30 is provided on the waste liquid barrel 25.
[0020] The fourth connecting ring 10 is provided with a second sealing groove 31 on one end facing the third connecting ring 9. The second sealing groove 31 adopts an annular groove structure. A second sealing pressure ring 32 is arranged in the second sealing groove 31. The provision of the second sealing groove 31 and the second sealing pressure ring 32 changes the shape of the gap between the fourth connecting ring 10 and the third connecting ring 9, thereby increasing the flow resistance that the liquid medium needs to overcome when passing through the gap between the fourth connecting ring 10 and the third connecting ring 9; further, a second sealing ring 33 is provided at the bottom of the second sealing pressure ring 32 and the fourth connecting ring 10. The second sealing ring 33 adopts an annular structure made of rubber material; installing the second sealing ring 33 reduces the gap between the fourth connecting ring 10 and the third connecting ring 9.
[0021] The method of using this product is as follows: Figures 1 to 2 As shown, the following steps are included:
[0022] First, the concrete test block 34 coated with the PVC film layer 35 is installed on the clamping tube 2 and the first fastening bolt 7 is tightened. At this point, the gap between the first sealing groove 3 and the first sealing pressure ring 4 gradually decreases, squeezing the first sealing ring 8. The shapes of the top of the first sealing groove 3 and the top of the first sealing pressure ring 4 guide the deformation direction of the first sealing ring 8, causing the first sealing ring 8 to gradually press against the concrete test block 34 coated with the PVC film layer 35, thereby reducing the gap between the first sealing ring 8 and the PVC film layer 35. Then, the fourth connecting ring 10 is installed below the third connecting ring 9 and the second fastening bolt 11 is tightened. During this process, as the gap between the fourth connecting ring 10 and the third connecting ring 9 gradually decreases, the second sealing ring 33 is gradually compressed. Completing these steps completes the preparations for the water permeability test on the concrete test block 34 coated with the PVC film layer 35.
[0023] After completing the preparatory work before the experiment, the formal water permeability experiment can be carried out, as follows:
[0024] First, water is added to the water pipe 1 through the top to within a preset range. Then, the liquid level in the water pipe 1 is further precisely adjusted by adjusting the regulating valve 28 between the first regulating water pipe 23 and the water storage tank 20 or between the first regulating water pipe 23 and the first drain pipe 22. The liquid level in the water pipe 1 is further adjusted to a preset value based on feedback from the scale layer 18. During this process, the regulating valve 28 between the first regulating water pipe 23 and the water storage tank 20 is opened, and the water stored in the water storage tank 20 enters the water pipe 1 through the second regulating water pipe 24 and the first regulating water pipe 23. The regulating valve 28 between the first regulating water pipe 23 and the first drain pipe 22 is opened, and the water stored in the water pipe 1 is discharged into the waste liquid tank 25 through the first regulating water pipe 23 and the second regulating water pipe 24. Then, the staff starts timing with the help of an external timing device. At this time, the water on the upper layer of the concrete test block 34 flows into the water storage bucket 15 below the clamping tube 2 through the concrete test block 34. When the time reaches the preset time, the data fed back by each pressure sensor 17 is recorded, and the average value is calculated based on the data fed back by several pressure sensors 17. The water permeability is calculated based on the measured temperature at that time to complete this test process.
[0025] After the test is complete, the shutoff valve 27 and pump 29 on the second drain pipe 26 are opened. The water in the water storage pipe 1 is then transferred to the waste liquid bucket 25 via the second drain pipe 26 and the second regulating water pipe 24. The second fastening bolt 11 is removed, and the completed concrete test block 34, along with the clamping pipe 2, is removed. The shutoff valve 27 on the first drain pipe 22 is opened, and the water stored in the water hopper 15 is also drained into the waste liquid bucket 25. Finally, the clamping pipe 2 with another concrete test block 34, now coated with a PVC film layer 35, is installed under the water storage pipe 1, preparing for the next test.
[0026] Through this embodiment, by tightening the first fastening bolt 7, the distance between the second connecting ring 6 and the first connecting ring 5 is reduced, thereby reducing the gap between the first sealing groove 3 and the first sealing pressure ring 4, and then causing the first sealing ring 8 to deform toward the concrete test block 34, thereby facilitating the sealing of the gap between the concrete test block 34 wrapped with the PVC film layer 35 and the clamping tube 2, and reducing the difficulty of cleaning the water-stop putty.
[0027] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.
Claims
1. A concrete water permeability detection device, characterized in that: The invention comprises a water storage pipe (1), a clamping pipe (2) is provided below the water storage pipe (1), a first sealing groove (3) is provided at the bottom of the clamping pipe (2) along the direction from bottom to top, a first sealing pressure ring (4) is provided in the first sealing groove (3), a first connecting ring (5) is provided on the bottom end of the first sealing pressure ring (4), a second connecting ring (6) is provided on the outer side of the clamping pipe (2), a first fastening bolt (7) is provided on the second connecting ring (6) and the first connecting ring (5), and the diameter of the inscribed circle at the top of the first sealing groove (3) increases with the height of the first sealing groove (3). As the height of the first sealing pressure ring (4) increases, the diameter of the inscribed circle at the top of the first sealing pressure ring (4) gradually increases. A first sealing ring (8) is provided between the top of the first sealing groove (3) and the top of the first sealing pressure ring (4). The first sealing ring (8) adopts an annular structure made of graphite packing. A third connecting ring (9) is provided on the bottom end of the water holding pipe (1), a fourth connecting ring (10) is provided on the top end of the clamping pipe (2), and a second fastening bolt (11) is provided on the fourth connecting ring (10) and the third connecting ring (9).
2. The concrete water permeability detection device according to claim 1, characterized in that: The device further comprises a bracket (12), wherein a bearing plate (13) is provided on the bracket (12), a through hole (14) is provided on the bearing plate (13) below the clamping tube (2), a water storage hopper (15) is provided on the through hole (14) and the bearing plate (13), a fifth connecting ring (16) is provided on the outside of the water storage hopper (15), and a pressure sensor (17) is provided on the fifth connecting ring (16) and the bearing plate (13).
3. The concrete water permeability detection device according to claim 2, characterized in that: The water holding pipe (1) adopts a rectangular tubular structure made of a transparent material, a scale layer (18) is provided on the outside of the water holding pipe (1), and the scale layer (18) extends from the bottom end of the water holding pipe (1) toward the top end of the water holding pipe (1), the clamping pipe (2) adopts a rectangular tubular structure, the first sealing groove (3) adopts an annular structure, the first sealing groove (3) and the inner cavity of the clamping pipe (2) are connected, and a first connecting frame (19) is provided between the water holding pipe (1) and the bracket (12).
4. The concrete water permeability detection device according to claim 2, characterized in that: A water storage tank (20) is provided above the water storage pipe (1), a second connecting frame (21) is provided between the water storage tank (20) and the bracket (12), a first drainage pipe (22) is provided at the bottom of the water storage pipe (1), an outlet end of a first regulating water pipe (23) is provided on the water storage pipe (1) above the first drainage pipe (22), an inlet end of a second regulating water pipe (24) is provided on the bottom end of the water storage tank (20), the inlet end of the first regulating water pipe (23) and the inlet end of the first drainage pipe (22) are both connected to the second regulating water pipe (24), and the second A waste liquid bucket (25) is provided at the outlet end of the regulating water pipe (24), the open end of the waste liquid bucket (25) is located below the water storage hopper (15), a second drain pipe (26) is provided at the bottom end of the water storage hopper (15), a stop valve (27) is provided on the first drain pipe (22) and the second drain pipe (26), and a regulating valve (28) is provided on the second regulating water pipe (24) between the first regulating water pipe (23) and the water storage tank (20) and the second regulating water pipe (24) between the first regulating water pipe (23) and the first drain pipe (22).
5. The concrete water permeability detection device according to claim 4, characterized in that: A delivery pump (29) is provided on the second regulating water pipe (24) between the first drainage pipe (22) and the waste liquid barrel (25); one end of the first drainage pipe (22) located inside the water storage pipe (1) faces the clamping pipe (2); one end of the first drainage pipe (22) located inside the water storage pipe (1) is located above the clamping pipe (2); and a liquid level sensor (30) is provided on the waste liquid barrel (25).
6. The concrete water permeability detection device according to claim 1, characterized in that: The fourth connecting ring (10) is provided with a second sealing groove (31) on one end thereof facing the third connecting ring (9). The second sealing groove (31) is an annular groove structure. A second sealing pressure ring (32) is provided in the second sealing groove (31). A second sealing ring (33) is provided at the bottom of the second sealing pressure ring (32) and on the fourth connecting ring (10). The second sealing ring (33) is an annular structure made of rubber material.
7. The concrete water permeability detection device according to claim 1, characterized in that: A concrete test block (34) is provided on the inner side of the clamping tube (2), a PVC film layer (35) is provided on the side of the concrete test block (34), and the first sealing groove (3) and the PVC film layer (35) are connected.