Concrete permeability meter with air tightness self-checking function

Abstract

This application discloses a concrete permeability tester with airtightness self-testing function, comprising a permeability test chamber, a placement cylinder, and a testing component. The top of the permeability test chamber is provided with several connecting seats. Several placement cylinders are arranged on the permeability test chamber, with each placement cylinder corresponding to one of the connecting seats. The bottom end of each placement cylinder is open and connected to a connecting flange, which is bolted to the corresponding connecting seat. A cylinder cover is rotatably connected to the top opening of each placement cylinder, and the cylinder cover is provided with a connecting buckle for connecting to the placement cylinder. The testing component includes a water tank, a water pump, a water pipe, and a connecting branch pipe. The water tank is located inside the permeability test chamber. One end of the water pipe is connected to the water tank, and a connecting branch pipe is connected to the water pipe. The connecting branch pipe is connected to the connecting seats and communicates with the inner cavity of the placement cylinder. This application has the effect of improving the accuracy of the test.

Description

Technical Field

[0001] This application relates to the technical field of concrete testing, and in particular to a concrete permeability tester with airtightness self-testing function. Background Technology

[0002] A permeability tester is an instrument used to test the permeability of building materials (such as concrete, mortar, and brickwork). It simulates a water pressure environment to detect the material's permeability and assess its waterproof durability. The HS-4 permeability tester is mainly used for testing the permeability of concrete and determining its permeability grade. It can also be used to determine the air permeability of building materials and for quality inspection, thus it is widely used in production, construction, design, education, and research fields in China.

[0003] In existing equipment, concrete test blocks are placed in a bucket-like container on the workbench during testing. A pressurized water pump inside the cabinet performs permeability testing on the concrete. However, due to the model's design, the bucket is connected to the workbench via a flange. After prolonged use, aging and other phenomena inevitably occur, leading to a decrease in its sealing performance and thus inaccurate test results. To solve this problem, an airtightness test needs to be performed before testing to ensure accuracy. Utility Model Content

[0004] To improve the accuracy of testing, this application provides a concrete permeability tester with airtightness self-testing function.

[0005] The concrete permeability tester with airtightness self-testing function provided in this application adopts the following technical solution:

[0006] A concrete permeability tester with airtightness self-testing function includes a permeability test chamber, a placement cylinder, and a testing component. The top of the permeability test chamber is provided with several connecting seats. Several placement cylinders are arranged on the permeability test chamber, with each placement cylinder corresponding to one of the connecting seats. The bottom end of each placement cylinder is open and connected to a connecting flange. The connecting flange is connected to the corresponding connecting seat by bolts. A cylinder cover is rotatably connected to the top opening of each placement cylinder, and the cylinder cover is provided with a connecting buckle for connecting to the placement cylinder. The testing component includes a water tank, a water pump, a water pipe, and a connecting branch pipe. The water tank is disposed in the permeability test chamber. One end of the water pipe is connected to the water tank, and a connecting branch pipe is connected to the water pipe. The connecting branch pipe is connected to the connecting seat and communicates with the inner cavity of the placement cylinder.

[0007] By adopting the above technical solution, when testing the sealing performance of the connecting seat and the placement cylinder, the cylinder cover is placed over the top opening of the placement cylinder, and a connecting clip is used to connect the placement cylinder and the cylinder cover. The water pump is started, and water from the water tank is injected into the placement cylinder. By observing whether there is liquid leakage between the connecting seat and the placement cylinder, the sealing performance of the device is tested. Through the cooperation of the anti-seepage tank, the placement cylinder, and the testing components, the sealing effect of the connection between the placement cylinder and the connecting seat is tested, which improves the accuracy of the test.

[0008] Optionally, the anti-seepage tank is connected to a plurality of test hoods, and the plurality of test hoods are arranged one-to-one with a plurality of placement cylinders. The placement cylinders and the corresponding connecting seats are placed in the corresponding test hoods. The test hoods are made of transparent material. A carbon dioxide cylinder is arranged next to the anti-seepage tank. A gas supply manifold is connected to the carbon dioxide cylinder. A plurality of connecting pipes are connected to the gas supply manifold. The plurality of connecting pipes correspond one-to-one with the plurality of test hoods and are connected. A gas supply valve is arranged on the gas supply manifold. Clear limewater is injected into the water tank.

[0009] By adopting the above technical solution, during testing, carbon dioxide gas is injected into the transparent detection hood through the gas supply manifold and connecting pipe. When leakage occurs between the connecting seat and the connecting flange, the clear lime water comes into contact with the carbon dioxide gas, producing a turbid liquid in the detection hood, which makes it easier for operators to observe.

[0010] Optionally, the detection cover has several ventilation holes on its peripheral wall, and a sealing ring is slidably fitted on the outside of the detection cover. The sealing ring has several connecting holes. When the sealing ring is flush with the detection cover, the ventilation holes and the connecting holes are staggered. When the sealing ring moves up to a certain position, the ventilation holes and the connecting holes correspond one-to-one and are connected.

[0011] By adopting the above technical solution, when testing the sealing performance of the device, the connecting holes and vent holes are staggered, and the sealing ring effectively blocks the vent holes. After the test is completed, the sealing ring is moved upwards, at which point the connecting holes and vent holes are connected. This allows the interior of the testing cover to communicate with the external environment, reducing the possibility of corrosion damage to the placement cylinder, connecting seat, and connecting flange due to excessive moisture inside the testing cover, thus helping to extend the service life of the device.

[0012] Optionally, the detection cover is provided with a connecting assembly, which includes a connecting plate, a connecting pin, and a mounting plate. The connecting plate is vertically connected to the top end of the sealing ring, and the connecting pin horizontally passes through the connecting plate and is slidably connected to it. The mounting plate is vertically connected to the top end of the detection cover, and the mounting plate has two mounting holes along the vertical direction. When the connecting pin is inserted into the lower mounting hole, the connecting hole and the vent hole are staggered. When the connecting pin is inserted into the upper mounting hole, the connecting hole and the vent hole are connected.

[0013] By adopting the above technical solution, during testing, the connecting pin is inserted into the lower mounting hole, with the connecting hole and vent hole staggered. When the connecting pin is inserted into the upper mounting hole, the sealing ring moves upward, connecting the connecting hole and vent hole, thus fixing the sealing ring.

[0014] Optionally, a ventilation branch pipe is connected to the detection cover, and a ventilation fan is installed next to the impermeable box. The ventilation branch pipe is connected to the ventilation fan.

[0015] By adopting the above technical solution, after completing the sealing test, the sealing ring is moved to the position corresponding to the connecting hole and the vent hole, the ventilation fan is started, and air is blown into the test cover through the ventilation branch pipe to dry it, which further reduces the possibility of the inside of the test cover being affected by water vapor.

[0016] Optionally, the top of the cylinder cover is provided with an exhaust pipe, which is connected to the inner cavity of the placement cylinder, and the top of the exhaust pipe is provided with an exhaust valve.

[0017] By adopting the above technical solution, the exhaust pipe and exhaust valve can ensure that the liquid in the placement cylinder can fill the entire placement cylinder, thus realizing the detection of the sealing performance of the cylinder cover and placement cylinder.

[0018] Optionally, the bottom surface of the cylinder cover is provided with a sealing ring-shaped airbag, which abuts against the inner ring wall at the top of the placement cylinder.

[0019] By adopting the above technical solution, the sealing ring airbag design further improves the sealing performance between the cylinder cover and the placement cylinder.

[0020] Optionally, a sealing ring is coaxially provided on the bottom surface of the cylinder cover, and an installation ring groove is provided on the outer ring wall of the sealing ring. The sealing ring-shaped airbag is disposed in the installation airbag. A sealing cone surface is provided on the outer ring wall at the top of the sealing ring, and an abutting cone surface is provided circumferentially on the inner ring wall at the top of the placement cylinder. When the cylinder cover is connected to the top of the placement cylinder, the abutting cone surface and the sealing cone surface are pressed together.

[0021] By adopting the above technical solution, the sealing ring and the sealing ring-shaped airbag cooperate with each other through soft and hard sealing to seal the cylinder cover and the placement cylinder, which helps to extend the service life of the sealing ring-shaped airbag.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Through the cooperation of the anti-seepage box, the placement cylinder, and the detection components, the sealing effect of the connection between the placement cylinder and the connecting seat can be detected, which improves the detection accuracy.

[0024] 2. The sealing ring reduces the possibility of corrosion damage to the placement cylinder, connecting seat, and connecting flange due to excessive moisture inside the detection cover, thus helping to extend the service life of the device;

[0025] 3. The installation of a ventilation fan further reduces the possibility of moisture affecting the inside of the detection hood. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the structure of a concrete impermeability tester with airtightness self-testing function, as described in the embodiments of this application.

[0027] Figure 2 This is a partial cross-sectional view in the embodiments of this application used to illustrate the internal structure of the anti-seepage box and the placement cylinder.

[0028] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0029] Figure 4 yes Figure 2 Enlarged view of section B in the middle.

[0030] Explanation of reference numerals in the attached drawings: 1. Impermeable tank; 2. Placement cylinder; 21. Abutting conical surface; 3. Cylinder cover; 4. Detection assembly; 41. Water tank; 42. Water pump; 43. Water supply pipe; 44. Connecting branch pipe; 45. Water supply valve; 5. Connecting assembly; 51. Connecting plate; 52. Connecting pin; 53. Limiting block; 54. Connecting tension spring; 55. Mounting plate; 551. Mounting hole; 6. Connecting seat; 7. Connecting flange; 8. Connecting buckle; 9. Sealing ring; 91. Sealing... 92. Sealing cone surface; 10. Installation ring groove; 11. Sealing ring airbag; 12. Gas supply pipe; 13. Exhaust stack; 14. Exhaust valve; 15. Detection cover; 16. Vent hole; 17. Sealing ring; 18. Carbon dioxide cylinder; 19. Gas supply manifold; 20. Connecting pipe; 21. Carbon dioxide concentration detector; 22. Gas supply valve; 23. Ventilation fan; 24. Ventilation branch pipe; 25. Sealing ring; 26. Connecting hole; 27. Connecting buckle. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be further described in detail below. An embodiment of this application provides a concrete permeability testing instrument with an airtightness self-testing function, which improves the accuracy of testing.

[0032] Reference Figure 1 and Figure 2 A concrete permeability tester with airtightness self-testing function includes a permeability test chamber 1, a placement cylinder 2, a cylinder cover 3, a testing component 4, and a connecting component 5.

[0033] Reference Figure 2-4 The top surface of the anti-seepage tank 1 is provided with several connecting seats 6. Several placement cylinders 2 are provided on the anti-seepage tank 1, with each placement cylinder 2 corresponding to a specific connecting seat 6. The top and bottom ends of the placement cylinder 2 are open. A connecting flange 7 is provided on the outer ring wall at the bottom end of the placement cylinder 2, and the connecting flange 7 is connected to the corresponding connecting seat 6 by bolts.

[0034] Reference Figure 1-3 The cover 3 is rotatably connected to the top opening of the placement cylinder 2 via a hinge. The cover 3 is equipped with a connecting buckle 268 for connecting to the placement cylinder 2. A sealing ring 9 is connected to the bottom surface of the cover 3, and a sealing cone surface 91 is circumferentially arranged on the outer ring wall at the top of the sealing ring 9. A mounting ring groove 92 is circumferentially arranged on the outer ring wall of the sealing ring 9, and a sealing annular airbag 10 is disposed in the mounting ring groove 92. An abutting cone surface 21 is circumferentially arranged on the inner ring wall at the top of the placement cylinder 2. When the cover 3 is connected above the placement cylinder 2, the sealing cone surface 91 and the abutting cone surface 21 are fitted together, and the sealing annular airbag 10 is tightly fitted to the inner ring wall of the placement cylinder 2. An air supply pipe 11 is connected to the sealing annular airbag 10, and one end of the air supply pipe 11 extends out of the cover 3 and is connected to an air supply source (not shown in the attached diagram). An exhaust pipe 12 is connected to the top surface of the cover 3, and an exhaust valve 13 is provided at the top of the exhaust pipe 12.

[0035] Reference Figure 2 The detection component 4 is installed in the impermeable tank 1. The detection component 4 includes a water tank 41, a water pump 42, a water pipe 43, connecting branch pipes 44, and a water valve 45. The water tank 41 is installed in the impermeable tank 1 and is filled with clear lime water. One end of the water pipe 43 is connected to the water tank 41, and the water pump 42 is connected to the water pipe 43. Several connecting branch pipes 44 are connected to the water pipe 43. The top end of the connecting branch pipe 44 is connected to the connecting seat 6 and communicates with the inner cavity of the placement cylinder 2. One water valve 45 is installed on each connecting branch pipe 44.

[0036] Reference Figure 2 and Figure 4The top surface of the anti-seepage chamber 1 is equipped with several annular detection covers 14, each corresponding to a number of placement cylinders 2. Corresponding connecting seats 6 and connecting flanges 7 are housed within the corresponding detection covers 14. A sealing ring 15 is installed between the detection cover 14 and the placement cylinder 2. A carbon dioxide cylinder 16 is located beside the anti-seepage chamber 1, connected to a gas supply manifold 17, which is equipped with a gas supply valve 20. Several connecting pipes 18 are connected to the gas supply manifold 17, each corresponding to and connected to one of the detection covers 14. A ventilation fan 22 is located beside the anti-seepage chamber 1, connected to a ventilation manifold 23, which is connected to several ventilation branch pipes 24, each corresponding to and connected to one of the detection covers 14. A carbon dioxide concentration detector 19 is installed on each detection cover 14.

[0037] Reference Figure 2 and Figure 4 A sealing ring 25 is slidably fitted onto the outside of the detection cover 14. Several vent holes 141 are formed on the peripheral wall of the detection cover 14, and several connecting holes 251 are formed on the sealing ring 25. A sliding strip is vertically arranged on the inner wall of the sealing ring 25, and a sliding groove is vertically arranged on the outer wall of the detection cover 14, with the sliding strip slidably embedded in the sliding groove. The connecting assembly 5 includes a connecting plate 51, a connecting pin 52, a limiting block 53, a connecting spring 54, and a mounting plate 55. The connecting plate 51 is vertically connected to the top of the sealing ring 25, and the connecting pin 52 horizontally passes through the connecting plate 51 and is slidably connected to it. One end of the connecting pin 52 away from the detection cover 14 is connected to the limiting block 53. A connecting spring is fitted onto the connecting pin 52, with one end connected to the limiting block 53 and the other end connected to the connecting plate 51. Mounting plate 55 is vertically connected to the top of detection cover 14. Two mounting holes 551 are formed vertically on mounting plate 55. When connecting pin 52 is inserted into the lower mounting hole 551, several connecting holes 251 and several vent holes 141 are staggered. When connecting pin 52 is inserted into the upper mounting hole 551, the several connecting holes 251 and several vent holes 141 correspond one-to-one and are connected.

[0038] Reference Figure 1 and Figure 3 During the sealing test, the cylinder cap 3 is connected to the top opening of the placement cylinder 2 via the connecting clip 268. At this time, the sealing ring airbag 10 is pressed tightly against the inner wall of the placement cylinder 2, and the sealing cone surface 91 of the sealing ring 9 is tightly fitted with the abutting cone surface 21 of the placement cylinder 2. By cooperating the rigid sealing ring 9 and the soft sealing ring airbag 10, the service life of the device is extended while ensuring sealing performance.

[0039] Reference Figure 2 and Figure 4The water pump 42 is started, and clear limewater is injected into the placement cylinder 2 through the water supply pipe 43 and connecting branch pipe 44. The gas in the placement cylinder 2 is discharged from the placement cylinder 2 through the exhaust pipe 12 and exhaust valve 13. At this time, the connecting pin 52 is inserted into the mounting hole 551 located below, and the air supply valve 20 is opened, injecting carbon dioxide into the detection cover 14 through the air supply manifold 17 and connecting pipe 18. When the placement cylinder 2 leaks, the clear limewater enters the detection cover 14 and reacts with the carbon dioxide to form a turbid liquid, which facilitates the operator's observation.

[0040] Reference Figure 1 and Figure 4 After testing the sealing performance of the placement cylinder 2, one end of the connecting pin 52 is pulled out from the lower mounting hole 551, causing the connecting spring to extend. The sealing ring 25 is pulled upwards, and the end of the connecting pin 52 is inserted into the upper mounting hole 551. At this time, the several connecting holes 251 correspond one-to-one with the several vent holes 141 and are connected. The ventilation fan is started, and the airflow enters the test cover 14 through the ventilation manifold 23 and the ventilation branch pipe 24, achieving ventilation and drying of the inside of the test cover 14 and reducing the possibility of corrosion of the placement cylinder 2 and the connecting flange 7 in the test cover 14 under the action of moisture.

[0041] The implementation principle of a concrete permeability tester with airtightness self-testing function in this embodiment is as follows: During the airtightness test, the cylinder cover 3 is connected to the top opening of the placement cylinder 2 via the connecting buckle 268. The water pump 42 is started and clear lime water is injected into the placement cylinder 2 through the water supply pipe 43 and the connecting branch pipe 44. When the placement cylinder 2 leaks, the clear lime water enters the detection hood 14 and reacts with carbon dioxide to form a turbid liquid, which facilitates the operator's observation.

[0042] After the sealing performance of the placement cylinder 2 is tested, the sealing ring 25 is pulled upwards. At this time, several connecting holes 251 correspond one-to-one with several vent holes 141 and are connected. The ventilation fan is started, realizing the ventilation and drying of the inside of the test cover 14.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete permeability tester with air tightness self-checking function, characterized in that: The system includes a seepage-resistant box (1), placement cylinders (2), and a testing component (4). The top of the seepage-resistant box (1) is provided with several connecting seats (6). Several placement cylinders (2) are provided on the seepage-resistant box (1), with each placement cylinder (2) corresponding to one of the connecting seats (6). The bottom of each placement cylinder (2) is open and connected to a connecting flange (7). The connecting flange (7) is connected to the corresponding connecting seat (6) by bolts. A cylinder cover (3) is rotatably connected to the top opening of each placement cylinder (2). The cover (3) is provided with a connecting buckle (26)(8) for connecting with the placement cylinder (2). The detection component (4) includes a water tank (41), a water pump (42), a water pipe (43), and a connecting branch pipe (44). The water tank (41) is located in the anti-seepage box (1). One end of the water pipe (43) is connected to the water tank (41). The connecting branch pipe (44) is connected to the water pipe (43). The connecting branch pipe (44) is connected to the connecting seat (6) and is connected to the inner cavity of the placement cylinder (2).

2. The concrete permeability instrument with air tightness self-checking function according to claim 1, characterized in that: The anti-seepage box (1) is connected to several test covers (14), and several test covers (14) are arranged one-to-one with several placement cylinders (2). The placement cylinders (2) and the corresponding connecting seats (6) are covered in the corresponding test covers (14). The test covers (14) are made of transparent material. A carbon dioxide cylinder (16) is arranged next to the anti-seepage box (1). A gas supply manifold (17) is connected to the carbon dioxide cylinder (16). Several connecting pipes (18) are connected to the gas supply manifold (17). Several connecting pipes (18) are arranged one-to-one with several test covers (14). A gas supply valve (20) is arranged on the gas supply manifold (17). Clear lime water is injected into the water tank (41).

3. The concrete permeability instrument with air tightness self-checking function according to claim 2, characterized in that: The detection cover (14) has several ventilation holes (141) on its peripheral wall. A sealing ring (25) is slidably fitted on the outside of the detection cover (14). The sealing ring (25) has several connecting holes (251). When the sealing ring (25) is flush with the detection cover (14), the ventilation holes (141) and the connecting holes (251) are staggered. When the sealing ring (25) moves up to a certain position, the ventilation holes (141) and the connecting holes (251) correspond one-to-one and are connected.

4. The concrete permeability instrument with air tightness self-checking function according to claim 3, characterized in that: The detection cover (14) is provided with a connecting component (5), which includes a connecting plate (51), a connecting pin (52), and a mounting plate (55). The connecting plate (51) is vertically connected to the top of the sealing ring (25). The connecting pin (52) passes horizontally through the connecting plate (51) and is slidably connected to it. The mounting plate (55) is vertically connected to the top of the detection cover (14). The mounting plate (55) has two mounting holes (551) along the vertical direction. When the connecting pin (52) is inserted into the mounting hole (551) located below, the connecting hole (251) and the vent hole (141) are intersected. When the connecting pin (52) is inserted into the mounting hole (551) located above, the connecting hole (251) and the vent hole (141) are connected.

5. The concrete permeability instrument with air tightness self-checking function according to claim 3, characterized in that: A ventilation branch pipe (24) is connected to the detection cover (14), and a ventilation fan (22) is provided next to the anti-permeability box (1). The ventilation branch pipe (24) is connected to the ventilation fan (22).

6. The concrete permeability instrument with air tightness self-checking function according to claim 1, characterized in that: The top of the cylinder cover (3) is provided with an exhaust pipe (12), which is connected to the inner cavity of the placement cylinder (2), and the top of the exhaust pipe (12) is provided with an exhaust valve (13).

7. The concrete permeability instrument with air tightness self-checking function according to claim 5, characterized in that: The bottom surface of the cylinder cover (3) is provided with a sealing ring airbag (10), and the sealing ring airbag (10) abuts against the inner ring wall at the top of the placement cylinder (2).

8. A concrete permeability tester with airtightness self-testing function according to claim 7, characterized in that: A sealing ring (9) is coaxially provided on the bottom surface of the cylinder cover (3). An installation ring groove (92) is provided on the outer ring wall of the sealing ring (9). The sealing ring-shaped airbag (10) is provided in the installation airbag. A sealing cone surface (91) is provided on the outer ring wall at the top of the sealing ring (9). An abutting cone surface (21) is provided circumferentially on the inner ring wall at the top of the placement cylinder (2). When the cylinder cover (3) is connected to the top of the placement cylinder (2), the abutting cone surface (21) abuts against the sealing cone surface (91).

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