Concrete impermeability testing device

Abstract

The utility model discloses a concrete impermeability testing device, and belongs to the technical field of concrete impermeability testing. Comprising a machine body, a test piece sleeve, a control unit, a pressure water supply unit and an overflow monitor, six groups of test bases are embedded and fixed at the top of the machine body, and a plurality of fastening bolts are fixed on the top surfaces of the test bases; a water inlet end is embedded and fixed at the top of the inner side of the test seat; the test piece sleeve is of an I-shaped structure, and a plurality of alignment holes are formed in the top of the test piece sleeve; a through hole is formed in the bottom of the test piece sleeve; the through hole is embedded with a fastening bolt and is fastened through a nut; the control unit comprises a control box fixed with the machine body; a start-stop button and a display screen are arranged on the control box; a host controller for controlling the whole machine is fixed on the inner side of the control box; the concrete anti-permeability performance testing device disclosed by the utility model can be used for automatically detecting the anti-permeability performance of a concrete test piece and can give an alarm in time after the detection is completed.

Description

Technical Field

[0001] The utility model specifically relates to a concrete anti-seepage performance testing device, belonging to the technical field of concrete anti-seepage testing. Background Art

[0002] Concrete impermeability refers to the performance of concrete in resisting the penetration of water and other liquid media under pressure. At present, when testing the concrete impermeability, it is generally necessary to first place the cylindrical concrete in a test mold, then buckle the test mold on the mold base, and lock the mold body on the mold base through multiple bolts to limit the concrete test block, and then turn on the switch of the control water pipe, adjust the test water pressure, so that water is pressed upward from the bottom of the concrete, and then perform subsequent concrete test block impermeability testing; existing testing devices, such as China Patent Publication No.: CN119470218A, disclose a concrete impermeability The invention discloses a detection device and a detection method, comprising a concrete impermeability tester and a processing seat, wherein the concrete impermeability tester is provided with placement seats at equal distances, and each placement seat is docked with a test mold, one side of the concrete impermeability tester is fixedly connected with two docking frames, and the processing seat is fixedly connected to the top of the two docking frames, and the top of the processing seat is provided with a placement groove; the structure can improve the specimen processing efficiency and the progress of concrete impermeability detection; however, the existing concrete impermeability tester needs a long time to be tested, and during the test, it is necessary to manually observe in real time whether there is water seepage on the surface of the specimen; after there is seepage, the manual valve is closed, and the operation is relatively cumbersome. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a concrete anti-seepage performance testing device, which can automatically detect the anti-seepage performance of concrete test pieces and can give an alarm in time after the detection is completed.

[0004] The utility model discloses a concrete anti-permeability testing device, comprising:

[0005] The machine body has six test seats fixedly embedded on the top of the machine body, and a plurality of fastening bolts are fixed on the top of the test seats; a water inlet terminal is fixedly embedded on the top of the inner side of the test seats;

[0006] The test piece sleeve is an I-shaped structure, a plurality of alignment holes are opened on the top of the test piece sleeve; a through hole is opened on the bottom of the test piece sleeve; the through hole is engaged with the fastening bolt and fastened by a nut;

[0007] A control unit, the control unit comprising a control box fixed to the machine body, the control box being provided with a start / stop button and a display screen; a host controller for controlling the whole machine being fixed inside the control box;

[0008] A pressure water supply unit, which is installed inside the machine body; the pressure water supply unit includes an electric control valve, one end of which is connected to the water inlet end, and the other end is connected to the main pipe; the main pipe is connected to the pump group through a pressure transmitter, and the pump group is connected to the water supply tank; a row of manual valves is arranged on the front side of the machine body; the manual valves are connected in series between the electric control valve and the main pipe;

[0009] The overflow monitor is pressed onto the top surface of the specimen sleeve, and an alignment column movably engaged with the alignment hole is fixed to the bottom of the overflow monitor; the alignment column and the alignment hole are movably engaged, and the overflow monitor is pressed onto the top surface of the concrete specimen by its own gravity, so that the overflow monitor and the concrete specimen are installed in a floating manner, thereby enabling the bottom surface of the overflow monitor to fit tightly with the concrete specimen.

[0010] During the test, first roll paraffin wax on the axial circumference of the concrete specimen, and press the concrete specimen into the specimen sleeve through a press. Then, install the specimen sleeve on the test seat, and fasten the specimen sleeve and the test seat by tightening bolts and nuts to complete the installation of the concrete specimen on the machine. Then, the alignment column at the end of the overflow monitor is movably engaged with the alignment hole. When engaging, the code on the overflow monitor needs to correspond to the code on the side of the test seat. Then, the pressure water supply unit is activated, the host controller controls all the electric control valves to open, and gives a signal to the pump group. The pump group starts the test from 0.1Mpa, increases by 0.1Mpa every 8 hours, and monitors the pressure value through the pressure transmitter. When a certain overflow monitor detects a signal, the host controller gives a signal to the corresponding electric control valve to close the water supply pipeline corresponding to the test seat. When the number of alarms from the overflow monitor reaches three, the anti-seepage performance test of the concrete specimen is completed, and the current seepage pressure is recorded.

[0011] Furthermore, the overflow monitor includes two groups of comb-shaped insulating ring seats, and the two groups of insulating ring seats are installed in an offset and interlocking manner; the top surfaces of the two groups of insulating ring seats are fixed by X-shaped brackets; a conductive layer is provided at the bottom of the insulating ring seats; the conductive layer of one group of insulating ring seats is connected to the ground end of the monitoring controller through a wire, and the conductive layer of the other group of insulating ring seats is connected to the IO port of the monitoring controller through a wire; the monitoring controller is wirelessly connected to the host controller; and the alignment column is fixed to the bottom surface of the bracket end. The bracket is made of insulating material, and the bracket can synchronously support two groups of insulating ring seats; the bracket is movably engaged with the alignment holes of the specimen sleeve through the alignment columns, so that the insulating ring seats can be floatingly pressed onto the top surface of the concrete specimen, so that the conductive layer and the concrete specimen are tightly fitted; when seepage appears on the top surface of the concrete specimen, the seepage penetrates into the adjacent conductive layers of the two groups of insulating ring seats; thereby, the two groups of insulating ring seats form conductors, one end of the conductor is grounded, and the other end is connected to the IO port of the monitoring controller; thereby, the IO port of the monitoring controller forms a low level, which can be quickly detected by the monitoring controller and the signal is sent to the host controller; the host controller closes the electric control valve of the pipeline.

[0012] Furthermore, the insulating ring seat is a semicircular structure, and the offset spacing between the two groups of insulating ring seats is 2-10 mm; when seepage appears on the top surface of the concrete specimen, the seepage can short-circuit the bottom surfaces of the two groups of insulating ring seats.

[0013] Furthermore, the conductive layer includes a conductive adhesive layer coated and cured on the bottom of the insulating ring seat; or a conductive woven layer or a conductive sheet bonded and fixed to the bottom of the insulating ring seat; the conductive adhesive layer, the conductive woven layer or the conductive sheet can be in close contact with the top surface of the concrete specimen, and when seepage occurs on the top surface of the concrete specimen, it can be quickly monitored.

[0014] Furthermore, a sound and light alarm is fixed on the top of the machine body; when one concrete specimen seeps, the sound and light alarm sounds an alarm once, and when three concrete specimens are detected to have seepage, the sound and light alarm sounds a continuous alarm.

[0015] Furthermore, the output end of the water inlet terminal is connected to a water inlet one-way valve; the water flow in the water inlet terminal can be pumped into the inner side of the test seat in one direction through the water inlet one-way valve.

[0016] Furthermore, a drain valve is fixed at the bottom of the test seat; the drain valve is connected to a drain pipe; when the concrete specimen completes the test, the drain is drained through the drain valve, and after the drainage is completed, the drain valve is closed to wait for the next test.

[0017] Compared with the prior art, the concrete anti-seepage performance testing device of the utility model automatically monitors whether there is seepage in the concrete specimen through an overflow monitor. When seepage occurs, it can automatically record the seepage duration and seepage pressure value when the seepage occurs, and automatically close the electric control valve; then continue to perform automatic pressure regulation and seepage monitoring, and when seepage occurs in three groups of concrete specimens, the anti-seepage performance test is completed; and an alarm is issued in time; then, the concrete specimen is split into two halves along the longitudinal section, the water seepage height inside the concrete specimen is measured, and the anti-seepage performance test of the concrete specimen is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the concrete anti-permeability testing device of the utility model.

[0019] Figure 2 It is a schematic diagram of the connection structure between the control unit and each control module of the utility model.

[0020] Figure 3 It is a schematic diagram of the staggered arrangement structure of two groups of insulating ring seats of the utility model.

[0021] Figure 4 It is a schematic diagram of the bottom surface structure of the insulating ring seat of the utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the overflow monitor of the utility model.

[0023] Figure numerals: 1. body, 2. test seat, 3. fastening bolts, 4. water inlet end, 5. test piece sleeve, 6. alignment hole, 7. nut, 8. control box, 9. start and stop button, 10. display screen, 11. electric control valve, 12. main pipe, 13. pressure transmitter, 14. pump group, 15. water supply tank, 16. manual valve, 17. overflow monitor, 18. alignment column, 19. concrete test piece, 20. insulating ring seat, 21. bracket, 22. conductive layer, 23. wire, 24. monitoring controller, 25. sound and light alarm. DETAILED DESCRIPTION

[0024] Example:

[0025] like Figures 1 to 5 The concrete impermeability test device shown includes:

[0026] The machine body 1 has six sets of test seats 2 embedded and fixed on the top of the machine body 1, and a plurality of fastening bolts 3 are fixed on the top surface of the test seats 2; a water inlet terminal 4 is embedded and fixed on the top of the inner side of the test seats 2;

[0027] The test piece sleeve 5 is an I-shaped structure, and a plurality of alignment holes 6 are opened on the top of the test piece sleeve 5; a through hole is opened on the bottom of the test piece sleeve 5; the through hole is engaged with the fastening bolt 3 and is fastened by the nut 7;

[0028] A control unit, the control unit comprises a control box 8 fixed to the machine body 1, the control box 8 is provided with a start / stop button 9 and a display screen 10; a host controller for controlling the whole machine is fixed inside the control box 8;

[0029] A pressure water supply unit is installed inside the machine body 1; the pressure water supply unit includes an electric control valve 11, one end of the electric control valve 11 is connected to the water inlet terminal 4, and the other end is connected to the main pipe 12; the main pipe 12 is connected to the pump group 14 through the pressure transmitter 13, and the pump group 14 is connected to the water supply tank 15; a row of manual valves 16 are arranged on the front side of the machine body 1; the manual valves 16 are connected in series between the electric control valve 11 and the main pipe 12;

[0030] The overflow monitor 17 is pressed onto the top surface of the specimen sleeve 5, and an alignment column 18 movably engaged with the alignment hole 6 is fixed to the bottom of the overflow monitor 17; the alignment column 18 and the alignment hole 6 are movably engaged, and the overflow monitor 17 is pressed onto the top surface of the concrete specimen 19 by its own gravity, so that the overflow monitor 17 and the concrete specimen 19 are installed in a floating manner, so that the bottom surface of the overflow monitor 17 can be tightly fitted with the concrete specimen 19.

[0031] During the test, firstly roll the paraffin wax on the axial circumference of the concrete specimen 19, and press the concrete specimen 19 into the specimen sleeve 5 by a press machine. Then, install the specimen sleeve 5 on the test seat 2, and fasten the specimen sleeve 5 and the test seat 2 by tightening the bolts 3 and nuts 7, and the concrete specimen 19 is put on the machine. Then, the alignment column 18 at the end of the overflow monitor 17 is movably engaged with the alignment hole 6. When engaging, the code on the overflow monitor 17 needs to correspond to the code on the side of the test seat 2. Then, the pressure water supply unit is activated. The host controller controls all the electric control valves 11 to open and gives a signal to the pump group 14. The pump group 14 starts the test from 0.1Mpa, increases by 0.1Mpa every 8 hours, and monitors the pressure value through the pressure transmitter 13; when a certain overflow monitor 17 detects a signal, the host controller gives a signal to the corresponding electric control valve 11 to close the water supply pipeline corresponding to the test seat 2; when the number of alarms issued by the overflow monitor 17 reaches three, the anti-seepage performance test of the concrete specimen 19 is completed, and the current seepage pressure is recorded.

[0032] The overflow monitor 17 includes two groups of comb-shaped insulating ring seats 20, and the two groups of insulating ring seats 20 are installed in an offset and embedded manner; the top surfaces of the two groups of insulating ring seats 20 are fixed by X-shaped brackets 21; a conductive layer 22 is provided at the bottom of the insulating ring seats 20; the conductive layer 22 of one group of insulating ring seats 20 is connected to the ground end of the monitoring controller 24 through a wire 23, and the conductive layer 22 of the other group of insulating ring seats 20 is connected to the IO port of the monitoring controller 24 through a wire 23; the monitoring controller 24 is wirelessly connected to the host controller; the alignment column 18 is fixed to the bottom surface of the end of the bracket 21. The bracket 21 is made of insulating material, and the bracket 21 can synchronously support the two groups of insulating ring seats 20; the bracket 21 is movably engaged with the alignment hole 6 of the specimen sleeve 5 through the alignment column 18, so that the insulating ring seat 20 can be floated and pressed onto the top surface of the concrete specimen 19, so that the conductive layer 22 is tightly fitted to the concrete specimen 19; when seepage appears on the top surface of the concrete specimen 19, the seepage penetrates into the conductive layers 22 adjacent to the two groups of insulating ring seats 20; thereby the two groups of insulating ring seats 20 form conductors, one end of the conductor is grounded, and the other end is connected to the IO port of the monitoring controller 24; thereby the IO port of the monitoring controller 24 forms a low level, which can be quickly detected by the monitoring controller 24, and the signal is sent to the host controller; the host controller closes the electric control valve 11 of the pipeline.

[0033] The insulating ring seat 20 is a semicircular structure, and the offset distance between the two groups of insulating ring seats 20 is 2-10 mm; when seepage appears on the top surface of the concrete specimen 19, the seepage can short-circuit the bottom surfaces of the two groups of insulating ring seats 20.

[0034] The conductive layer 22 includes a conductive adhesive layer coated and cured on the bottom of the insulating ring seat 20; or a conductive woven layer or a conductive sheet bonded and fixed to the bottom of the insulating ring seat 20; the conductive adhesive layer, conductive woven layer or conductive sheet can be in close contact with the top surface of the concrete specimen 19, and when seepage occurs on the top surface of the concrete specimen 19, it can be quickly monitored.

[0035] A sound and light alarm 25 is fixed on the top of the body 1; when one concrete specimen 19 leaks, the sound and light alarm 25 gives an alarm, and when three concrete specimens 19 leak, the sound and light alarm 25 gives a continuous alarm.

[0036] The output end of the water inlet terminal 4 is connected to a water inlet check valve; the water flow in the water inlet terminal 4 can be pumped into the inner side of the test seat 2 in a unidirectional manner through the water inlet check valve.

[0037] A drain valve is fixed at the bottom of the test seat 2; the drain valve is connected to a drain pipe; when the concrete specimen 19 completes the test, the water is drained through the drain valve, and after the drainage is completed, the drain valve is closed and waits for the next test.

[0038] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A concrete impermeability testing device, characterized in that: include: The machine body has six test seats fixedly embedded on the top of the machine body, and a plurality of fastening bolts are fixed on the top of the test seats; a water inlet terminal is fixedly embedded on the top of the inner side of the test seats; The test piece sleeve is an I-shaped structure, a plurality of alignment holes are opened on the top of the test piece sleeve; a through hole is opened on the bottom of the test piece sleeve; the through hole is engaged with the fastening bolt and fastened by a nut; A control unit, the control unit comprising a control box fixed to the machine body, the control box being provided with a start / stop button and a display screen; a host controller for controlling the whole machine being fixed inside the control box; A pressure water supply unit, which is installed inside the machine body; the pressure water supply unit includes an electric control valve, one end of which is connected to the water inlet end, and the other end is connected to the main pipe; the main pipe is connected to the pump group through a pressure transmitter, and the pump group is connected to the water supply tank; a row of manual valves is arranged on the front side of the machine body; the manual valves are connected in series between the electric control valve and the main pipe; The overflow monitor is pressed on the top surface of the test piece sleeve, and an alignment column movably engaged with the alignment hole is fixed on the bottom of the overflow monitor.

2. The concrete impermeability testing device according to claim 1, characterized in that: The overflow monitor comprises two groups of comb-shaped insulating ring seats, which are installed in an offset and interlocking manner; the top surfaces of the two groups of insulating ring seats are fixed by X-shaped brackets; a conductive layer is provided at the bottom of the insulating ring seats; the conductive layer of one group of insulating ring seats is connected to the ground end of the monitoring controller through a wire, and the conductive layer of the other group of insulating ring seats is connected to the IO port of the monitoring controller through a wire; the monitoring controller is wirelessly connected to the host controller; and the alignment column is fixed to the bottom surface of the bracket end.

3. The concrete impermeability testing device according to claim 2, characterized in that: The insulating ring seat is a semicircular structure, and the offset distance between two groups of the insulating ring seats is 2-10 mm.

4. The concrete impermeability testing device according to claim 2, characterized in that: The conductive layer includes a conductive adhesive layer coated and cured on the bottom of the insulating ring seat; or a conductive braided layer or a conductive sheet bonded and fixed to the bottom of the insulating ring seat.

5. The concrete impermeability testing device according to claim 1, characterized in that: An audible and visual alarm is fixed on the top of the machine body.

6. The concrete impermeability testing device according to claim 1, characterized in that: The output end of the water inlet terminal is connected with a water inlet check valve.

7. The concrete impermeability testing device according to claim 1, characterized in that: A drain valve is fixed at the bottom of the test seat, and the drain valve is connected to a drain pipe.

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