Water seepage path detection sensor for impermeability detection

Abstract

The utility model relates to the field of concrete impermeability detection, in particular to a water seepage path detection sensor for impermeability detection. The utility model provides a water seepage path detection sensor for impermeability detection. The water seepage path detection sensor comprises a substrate, a light source module, a light absorber and a photosensitive element, the light source module, the light absorber and the photosensitive element are all arranged on the substrate, the light absorber is located in the light emitting direction of the light source module, and the photosensitive element is located between the light source module and the light absorber. The water seepage path detection sensor for impermeability detection can be directly installed in a water seepage space of a concrete impermeability detection system, so that when the impermeability detection system finds water seepage, whether the water seepage water is filtered by concrete or not is judged by combining optical characteristics of the water seepage water, and the water seepage condition that the water seepage water does not pass through the concrete is found in time; the effectiveness of concrete water seepage detection is ensured.

Description

Technical Field

[0001] The utility model relates to the field of concrete anti-seepage detection, in particular to a water seepage path detection sensor for anti-seepage detection. Background Art

[0002] Concrete is an essential structure for buildings, and its quality is directly related to the safety of building structures. Water-proof testing is the key to ensuring the safety of concrete. Referring to Figures 1(a), 1(b), 1(c), and 1(d), the essential components of the existing concrete water-proof testing system include: a base 1, a casing 4, an airbag 2, and a top seat 3; the airbag 2 is arranged on the inner circumference of the casing 4; during the test, the concrete specimen is placed in the center of the sealing assembly of the water-proof instrument, and the base 1 is located below the concrete specimen. The base 1 has the function of constraining the specimen, the airbag 2, and providing a water inlet channel 10 to access high-pressure water; the top of the specimen is the top seat 3, which has the function of constraining the specimen and the airbag 2, and providing a flushing port 30 to access the flushing water pressure, and also has the function of detecting water seepage of the specimen. The concrete specimen is wrapped by the airbag 2, which consists of an annular sac body and an air nozzle. When the airbag 2 is filled with a specified air pressure through the air nozzle 20, the inner ring side of the airbag 2 hugs the concrete specimen, the outer ring side of the airbag 2 is constrained by the casing 4, the bottom of the airbag 2 is constrained by the base 1, and the top of the airbag 2 is constrained by the top seat 3.

[0003] The main problem with this test structure is that when water seepage is detected at the top of the test piece, it is usually considered that the test piece is penetrated by water, that is, the default water seepage path is path A shown in Figure 1(a), which can effectively determine that the test piece is penetrated; however, when there is a problem with the sealing of the airbag 2 in the existing test structure, water in the base 1 may also pass through the channel between the airbag 2 and the test piece, or pass through the airbag 2, and the water seepage path is path B shown in Figure 1(a), which cannot determine that the test piece is penetrated. Therefore, when water seepage is detected at the top of the test piece, it is actually impossible to accurately determine whether the test piece is effectively penetrated by water. Utility Model Content

[0004] In order to solve the defect of false seepage detection in the concrete anti-seepage detection system in the above-mentioned prior art, the utility model proposes a water seepage path detection sensor for anti-seepage detection, which can detect the water seepage path in the concrete anti-seepage detection experiment, thereby avoiding false detection of concrete water seepage caused by failure of the anti-seepage detection device.

[0005] The utility model proposes a water seepage path detection sensor for anti-seepage detection, comprising: a substrate, a light source module, a light absorber and a photosensitive element; the light source module, the light absorber and the photosensitive element are all arranged on the substrate, and the light absorber is located in the light emitting direction of the light source module, and the photosensitive element is located between the light source module and the light absorber.

[0006] Preferably, the light source module adopts a light source that emits parallel white light.

[0007] Preferably, the light source module comprises a white light source and a lens, and the lens is arranged on the light emitting surface of the white light source.

[0008] Preferably, the photosensitive element is a diffuse reflection sensor or a light intensity sensor.

[0009] Preferably, the photosensitive element is an infrared diffuse reflection sensor.

[0010] Preferably, it further comprises a mounting plate and a spring; the mounting plate and the base plate are both connected to the spring and are located at two ends of the spring in the expansion and contraction direction; the spring is located on a side of the base plate away from the light source module.

[0011] Preferably, a reinforcing rib is provided on the substrate; the light source module, the light absorber and the photosensitive element are all located between the substrate and the end surface of the reinforcing rib.

[0012] Preferably, a plurality of reinforcing ribs are provided on the substrate, and the reinforcing ribs are distributed around the peripheries of the light source module, the light absorber and the photosensitive element.

[0013] Preferably, it also includes a microprocessor and a power supply; the light source module and the light absorber both adopt metal shells, and the two metal shells are respectively connected to the first wire and the second wire; when the two metal shells are turned on, the power supply, the first wire, the second wire and the two metal shells constitute a first circuit, and the first circuit is provided with a first current detection device; the photosensitive element is connected in series on the second circuit, and the second circuit is provided with a second current detection device; the power supply is used to supply power to the first circuit, the second circuit and the light source module; the circuit where the light source module is located is provided with a light source start switch; the microprocessor is respectively connected to the light source start switch, the first current detection device and the second current detection device; the microprocessor is used to control the light source start switch to be turned on when the first current detection device detects current.

[0014] Preferably, a flushing nozzle is also provided on the substrate.

[0015] The advantages of the utility model are:

[0016] (1) The water seepage path detection sensor for anti-seepage detection proposed by the utility model can be directly installed in the water seepage space of the concrete anti-seepage detection system. When the anti-seepage detection system finds water seepage, it can be judged whether the water seepage body has been filtered by concrete in combination with the optical characteristics of the water seepage body, so as to timely find the water seepage that has not passed through the concrete, thereby ensuring the effectiveness of concrete water seepage detection.

[0017] (2) In the present invention, a white light source and a lens are used to form a light element module. This makes the light intensity in the seeping water body greater and the light more concentrated during the test, making the detection value of the photosensitive element more easily affected by the optical characteristics of the seeping water body, thereby improving the response speed and accuracy of the photosensitive element.

[0018] (3) In the utility model, the photosensitive element is preferably a diffuse reflection sensor, which facilitates the use of colored water for testing in the anti-seepage detection system, reduces the cost of testing water, and the concrete specimen can fully filter the colored macromolecules, thereby improving the test accuracy.

[0019] (4) In the present invention, the mounting plate is used to provide a structure connected to the top seat, the base plate is used to provide a mounting position for the sensor module, and the spring realizes the spatial adaptability of the mounting structure, thereby realizing the spatial adaptability of the overall structure of the sensor, which is convenient for adapting to the detection of concrete specimens of different heights.

[0020] (5) The setting of reinforcing ribs provides space for photoelectric devices to avoid being squeezed by the top seat and concrete specimen, thus ensuring the safety and reliability of the sensor. The setting of flushing nozzles can flush in time to avoid residual substances in the seepage space affecting the accuracy of the next test.

[0021] (6) In the utility model, the electrode pair used to detect water seepage is also integrated into the water seepage path detection sensor, and a microprocessor is also integrated, thereby directly realizing automated and integrated anti-seepage detection. The structure is sophisticated and convenient for retrofitting existing systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1( a ) is a cross-sectional view of an existing concrete anti-seepage detection system;

[0023] FIG1( b ) is an external display diagram of an existing concrete anti-seepage detection system;

[0024] FIG1( c ) is an opening diagram of an existing concrete anti-seepage detection system;

[0025] FIG1(d) is a cross-sectional view of the state of FIG1(c);

[0026] Figure 2 A three-dimensional diagram of a water seepage path detection sensor for anti-seepage detection;

[0027] Figure 3 for Figure 2 A top view of

[0028] Figure 4 for Figure 2 Bottom view of

[0029] Figure 5 It is a schematic diagram of the installation of a water seepage path detection sensor for anti-seepage detection;

[0030] Figure 6 It is a cross-sectional view of a concrete anti-seepage detection system equipped with a water seepage path detection sensor.

[0031] Illustration: 1-base; 10-water inlet channel; 2-air bag; 20-air nozzle; 3-top seat; 30-flushing port; 4-casing; 5-concrete specimen; 61-mounting plate; 62-spring; 63-base plate; 631-reinforcement rib; 7-sensor module; 71-photosensitive element; 72-light source module; 73-light absorber; 8-flushing nozzle; A-wire; B-water pipe. DETAILED DESCRIPTION

[0032] A water seepage path detection sensor for anti-seepage detection proposed in this embodiment is used to detect the optical properties of the seepage water body in the concrete anti-seepage detection system, so as to determine whether the seepage water body has been filtered through the concrete, so as to accurately determine the seepage path and ensure the effectiveness of concrete water seepage detection.

[0033] Reference Figure 2-Figure 6 The water seepage path detection sensor for anti-seepage detection proposed in this embodiment can be directly installed in the water seepage space of the concrete anti-seepage detection system, that is, the space between the top seat 3 and the concrete specimen 5. The water seepage path detection sensor includes a substrate 63 and a light source module 72, a light absorber 73 and a photosensitive element 71 installed on the substrate 63.

[0034] The light absorber 73 is a miniature optical darkroom, that is, a device having an optical darkroom. After the light enters the light absorber 73 , it is completely absorbed, and no reflected light is emitted from the light absorber 73 .

[0035] The light source module 72 and the light absorber 73 are arranged opposite to each other. The light absorber 73 absorbs the light emitted by the light source module 72 so that the light emitted by the light source module 72 propagates in a single path to avoid light reflection. The photosensitive element 71 is arranged on the light propagation path, that is, between the light source module 72 and the light absorber 73.

[0036] The water seepage path detection sensor for anti-seepage detection is installed in the water seepage space of the concrete anti-seepage detection system, and the light source module 72 and the photosensitive element 71 are both connected to the external circuit. When water enters the water seepage space, after the light source module 72 is started, the photosensitive element 71 detects the propagation of light in the water body and determines the water seepage path. When water enters the water seepage space but the water seepage path does not pass through the concrete test piece 5, it means that the water seepage detection result is invalid; only when the water seepage path passes through the concrete test piece can the validity of the water seepage detection result be guaranteed.

[0037] For example, when the photosensitive element 71 adopts a light intensity sensor, the transmittance of the seeping water body can be determined by the light intensity detected by it, so as to determine whether the seeping water body is filtered by concrete by comparing the transmittance of the high-pressure water connected to the water inlet channel 10 with the transmittance of the seeping water body.

[0038] When the photosensitive element 71 adopts a diffuse reflection sensor, the diffuse reflection detected by the photosensitive element 71 can be used to determine whether there are colored macromolecules in the seepage water body and whether the seepage water body is filtered by the concrete. For example, when the water inlet channel 10 is red water with red reagent added, the photosensitive element 71 can select an infrared diffuse reflection sensor, and the light source module 72 can select a white light source, and white light is more likely to have infrared diffuse reflection in red water bodies; when the infrared diffuse reflection sensor generates current, it means that infrared diffuse reflection occurs in the seepage water body, indicating that the seepage water body is red water body, and it can be seen that the water body of the water inlet channel 10 enters the water storage space but does not pass through the concrete test piece, proving that the test result is invalid; on the contrary, if there is no infrared diffuse reflection in the seepage water body, that is, the infrared diffuse reflection sensor is not turned on, it means that the seepage path passes through the concrete test piece 5, and the red macromolecules in the water body are filtered, that is, the concrete test piece is indeed seeping water.

[0039] In specific implementation, the light source module 72 can be set as a white light source with a lens set in the light output direction, so that the light source module 72 emits a parallel beam of white light, making the output beam more concentrated, thereby further improving the influence of the characteristics of the seepage water body on the detection value of the photosensitive element 71, improving the sensitivity of the photosensitive element 71 to the optical characteristics of the seepage water body, and improving the efficiency and accuracy of the detection of the effectiveness of seepage.

[0040] In this embodiment, a mounting plate 61 and a spring 62 are also provided. The mounting plate 61 is used to provide a connection structure with the top seat 3, and the base plate 63 is connected to the mounting plate 61 through the spring 62. In this way, by contracting the spring 62, the distance between the base plate 63 and the mounting plate 61 can be adjusted. When the water seepage path detection sensor is installed in the water seepage space, the structure is as follows: Figure 5 , Figure 6 As shown, as the spring 62 expands and contracts, it can adapt to concrete specimens 5 of different heights; and the sensor always rests against the concrete specimen, so that when water seepage just occurs in the water storage space, detection can be carried out in time, thereby improving detection efficiency.

[0041] A reinforcing rib 631 is provided on one side of the substrate 63 close to the concrete specimen 5, and the photosensitive element 71 and the light propagation unit are both located in a groove formed by the reinforcing rib 631 and the substrate 63. In this way, in the detection state, the reinforcing rib 631 abuts against the end surface of the concrete specimen 5, providing space for the light source module 72 and the light absorber 73, thereby preventing the light propagation unit and the photosensitive element 71 from being squeezed and damaged by the concrete specimen 5 and the top seat 3.

[0042] In this embodiment, the water seepage path detection sensor also includes a microprocessor and a power supply. The light source module 72 and the light absorber 73 are both made of metal shells, and the two metal shells are respectively connected to a first wire and a second wire; the power supply, the first wire, the second wire and the two metal shells constitute a first circuit, and a first current detection device is provided on the first circuit. The two metal shells constitute an electrode pair, referring to Figure 6When water enters the seepage space, the two metal shells are connected, the first circuit is closed to generate current, and the first current detection device generates feedback information.

[0043] The photosensitive element 71 is connected in series to the second circuit, and a second current detection device is provided on the second circuit. When the photosensitive element 71 generates a photoelectric reaction, the second current detection device generates feedback information.

[0044] The power supply is used to supply power to the first circuit, the second circuit and the light source module 72; the circuit where the light source module 72 is located is provided with a light source start switch; the microprocessor is respectively connected to the light source start switch, the first current detection device and the second current detection device. The microprocessor is used to control the light source start switch to turn on when the first current detection device detects the current, thereby starting the light source module 72, and then judging whether the seepage water body has been filtered by the concrete according to the feedback information of the second current detection device.

[0045] During actual detection, the water inlet of the water inlet channel 10 should be selected according to the characteristics of the photosensitive element. If the photosensitive element 71 is a light intensity sensor, substances such as phenol, hydrocarbon, alcohol, carboxylic acid, carbon black, organic matter, etc. that increase the turbidity of the water body and reduce the light transmittance of the water body can be added to the inlet water; at this time, if the second current detection device detects current, it means that the photosensitive element 71 has a photoelectric reaction, and the seepage water body has been filtered and purified, proving that the seepage channel passes through the concrete test piece 5. On the contrary, the second current detection device does not detect current, the photosensitive element 71 does not have a photoelectric reaction, and the seepage path does not pass through the concrete test piece.

[0046] If the photosensitive element 71 is an infrared diffuse reflection sensor, red pigment can be added to the incoming water; at this time, if the second current detection device detects current, it means that the infrared diffuse reflection sensor has a photoelectric reaction, the seepage water body is still red water body, and the seepage path has not passed through the concrete specimen; on the contrary, the second current detection device does not detect current, the infrared diffuse reflection sensor does not have a photoelectric reaction, and the red molecules in the water body are filtered and purified, proving that the seepage channel passes through the concrete specimen 5.

[0047] Reference Figure 2 In this embodiment, the wires connected to the light source module, the first wire, the second wire, and the wires connected to the photosensitive element can be arranged into a wire harness A to facilitate the installation of the sensor.

[0048] In this embodiment, a flushing nozzle 8 is further provided on the substrate 63. The flushing nozzle 8 receives water through the water pipe B to flush the water seepage space and the sensor, thereby preventing the residual substances in the seepage water from affecting the next detection.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water seepage path detection sensor for anti-seepage detection, characterized in that: include: A substrate (63), a light source module (72), a light absorber (73) and a photosensitive element (71); the light source module (72), the light absorber (73) and the photosensitive element (71) are all arranged on the substrate (63), the light absorber (73) is located in the light emitting direction of the light source module (72), and the photosensitive element (71) is located between the light source module (72) and the light absorber (73).

2. The water seepage path detection sensor for anti-seepage detection according to claim 1, characterized in that: The light source module (72) adopts a light source that emits parallel white light.

3. The water seepage path detection sensor for anti-seepage detection according to claim 2, characterized in that: The light source module (72) comprises a white light source and a lens, wherein the lens is arranged on a light emitting surface of the white light source.

4. The water seepage path detection sensor for anti-seepage detection according to claim 2, characterized in that: The photosensitive element (71) is a diffuse reflection sensor or a light intensity sensor.

5. The water seepage path detection sensor for anti-seepage detection according to claim 4, characterized in that: The photosensitive element (71) is an infrared diffuse reflection sensor.

6. The water seepage path detection sensor for anti-seepage detection according to claim 1, characterized in that: It also includes a mounting plate (61) and a spring (62); the mounting plate (61) and the base plate (63) are both connected to the spring (62) and are located at both ends of the spring (62) in the direction of extension and contraction; the spring (62) is located on a side of the base plate (63) that is away from the light source module (72).

7. The water seepage path detection sensor for anti-seepage detection according to claim 1, characterized in that: A reinforcing rib (631) is provided on the substrate (63); the light source module (72), the light absorber (73) and the photosensitive element (71) are all located between the substrate (63) and the end surface of the reinforcing rib (631).

8. The water seepage path detection sensor for anti-seepage detection according to claim 7, characterized in that: A plurality of reinforcing ribs (631) are provided on the substrate (63), and the reinforcing ribs (631) are distributed so as to surround the peripheries of the light source module (72), the light absorber (73) and the photosensitive element (71).

9. The water seepage path detection sensor for anti-seepage detection according to claim 1, characterized in that: It also includes a microprocessor and a power supply; the light source module (72) and the light absorber (73) both use metal shells, and the two metal shells are respectively connected to a first wire and a second wire; when the two metal shells are conductive, the power supply, the first wire, the second wire and the two metal shells form a first circuit, and the first circuit is provided with a first current detection device; the photosensitive element (71) is connected in series to the second circuit, and the second circuit is provided with a second current detection device; the power supply is used to supply power to the first circuit, the second circuit and the light source module (72); the circuit where the light source module (72) is located is provided with a light source start switch; the microprocessor is respectively connected to the light source start switch, the first current detection device and the second current detection device; the microprocessor is used to control the light source start switch to be conductive when the first current detection device detects current.

10. The water seepage path detection sensor for anti-seepage detection according to claim 1, characterized in that: A flushing nozzle (8) is also provided on the base plate (63).

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