Nondestructive testing device for impermeability of concrete structure

Abstract

The invention discloses a nondestructive testing device for impermeability of a concrete structure, and relates to the technical field of concrete detection, the nondestructive testing device comprises a movable support, an anode electrode, a cathode electrode and a processor assembly, two opposite outer recycling boxes are sleeved with the movable support, and composite flow guide pipe fittings are sleeved with the two outer recycling boxes. According to the invention, movable detection accommodating devices are formed by arranged extension square pipes and composite rubber rings, and after the two subsequent detection accommodating devices are in one-to-one correspondence combined operation with two outer recycling boxes and two composite flow guide pipe fittings under the transmission of the lifting assembly, two high-sealing detection spaces can be automatically formed on the surface of concrete to be detected; and after being matched with an anode electrode, a cathode electrode, a processor assembly and two temperature sensors for use, the chloride ion migration coefficient detection operation can be carried out, the whole operation process is high in automation and high in sealing performance, and the detection accuracy is fully guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of concrete detection, in particular to a nondestructive detection device for the anti-penetration performance of a concrete structure. Background Art

[0002] As one of the most important civil engineering materials in contemporary times, concrete is mainly made of cementitious materials, granular aggregates (also called aggregates), water, and admixtures and additives added when necessary, which are prepared in a certain proportion, and are uniformly stirred, compacted, and cured to form an artificial stone with a wide range of uses. With the diversification and high standards of the use environment, in reality, a variety of performance tests are required for the concrete after construction, such as anti-penetration, structural strength, etc. In the process of anti-penetration testing, in order to avoid damage to the completed concrete layer, the chloride ion migration coefficient detection technology is usually used, and the detailed technical content has been disclosed in the prior art, such as the patent document with application number 202111644111.

[0003] However, from the perspective of actual construction, the above-mentioned prior art does not provide further treatment measures for the chemical reagents used in the detection process. If they are directly abandoned, they may pollute the construction environment. Secondly, in the actual concrete construction site, the surface of the concrete is covered with a lot of dust, and direct detection will affect the actual test results. This is also a practical problem that the above-mentioned prior art has not considered. It can be seen that the prior art still has major defects in practical application and needs further improvement. Summary of the invention

[0004] The present invention provides a nondestructive testing device for the anti-penetration performance of a concrete structure, which solves the problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical solutions: a nondestructive testing device for the anti-permeability performance of a concrete structure, comprising a movable support, an anode electrode, a cathode electrode, and a processor component, wherein two opposite outer recycling boxes are mounted inside the movable support, and the two outer recycling boxes are both mounted inside a composite flow guide pipe, and the bottom outer sides of the two outer recycling boxes are both clamped with an extended square tube, and a lifting component capable of synchronously lifting and transmitting the two extended square tubes is arranged in the middle of the movable support, and the bottoms of the two extended square tubes are both connected with a composite rubber ring, and the anode electrode and the cathode electrode are respectively mounted inside the two composite flow guide pipes, and the processor component comprises a processor, a conductivity meter and a power module, and the anode electrode and the cathode electrode are both electrically connected to the conductivity meter and the power module through a wire; A negative pressure component is installed at the rear end of the top of the movable support, and the two input structures inside the negative pressure component are respectively mounted inside the two external recovery boxes. The two composite rubber rings are both hollow structures, and the inner walls at the bottoms of the two composite rubber rings are provided with reflux holes communicating with their own hollow spaces. A first guide valve tube is installed between the composite rubber ring and the corresponding external recovery box, and a second guide valve tube for drainage is installed at the bottoms of the two external recovery boxes.

[0006] The lifting component includes a push rod electric cylinder and an auxiliary bracket mounted outside the push rod electric cylinder housing, the bottom of the auxiliary bracket is installed on the top surface of the middle of the movable support, the output end of the auxiliary bracket is transmission connected with a linkage plate, the two sides of the linkage plate are respectively transmission connected with one side of the two extended square tubes, and the lifting component serves as a power source to provide automated lifting operation conditions for the two extended square tubes.

[0007] Preferably, a restraining rod is fixedly connected to the top surface of the auxiliary bracket, and a guide cylinder installed on the surface of the linkage plate is clamped on the bottom of the restraining rod. The clamping and guiding of the restraining rod and the guide cylinder can fully improve the stability of the reciprocating lifting of the linkage plate.

[0008] Preferably, walking wheels are installed on both sides of the front and rear ends of the bottom of the mobile support to facilitate the movement and use of the overall device. A handle is installed on the rear end surface of the mobile support, and a support base is installed between the surface of the two external recycling boxes and the top surface of the mobile support to ensure the stability of the two external recycling boxes.

[0009] The negative pressure component comprises a negative pressure pump, a main air supply pipe and two branch valve tubes. The input end of the negative pressure pump is connected with one end of the main air supply pipe, and a fixed seat is installed between the shell surface of the negative pressure pump and the surface at the rear end of the top of the movable support. One end of the two branch valve tubes is connected with the other end of the main air supply pipe. The other ends of the two branch valve tubes are respectively mounted on the inner side of the middle part of the two external recovery boxes as the input structure of the negative pressure component. The negative pressure component serves as a negative pressure power source, and cooperates with the corresponding composite rubber ring, the first guide valve tube and the external recovery box to perform negative pressure recovery on the used detection solution to avoid the detection solution contaminating the use environment.

[0010] Preferably, pressure sensors are installed on the inner walls of the two outer recovery boxes, temperature sensors are arranged in the two composite flow guide pipes, and infusion tubes are installed on the tops of the two composite flow guide pipes. The top outer sides of the infusion tubes are threadedly connected with sealing covers, and rubber ring pads are nested inside the two extended square tubes, and the inner walls of the rubber ring pads are tightly fitted with the bottom surfaces of the corresponding outer recovery boxes, thereby improving the sealing effect of the connection between the extended square tubes and the corresponding outer recovery boxes.

[0011] The two composite guide pipes are composed of a main connecting tube, an insulating elastic hose, and a bottom connecting tube. The insulating elastic hose is installed between the main connecting tube and the bottom connecting tube, and the insulating elastic hose has the structural property of being deformed under pressure. The main connecting tube is fixedly sleeved on the top inner side of the corresponding external recovery box and is fixedly sleeved with the corresponding anode electrode or cathode electrode and temperature sensor.

[0012] Preferably, the bottom of the bottom connecting pipe is fixedly connected with the bottom of the corresponding external recovery box, and the bottom end of the bottom connecting pipe passes through the bottom structure of the external recovery box and extends to the inside of the corresponding extended square tube, thereby making the overall internal space of the composite guide pipe connected with the detection space formed by the corresponding extended square tube and the composite rubber ring to form an integrated space.

[0013] Preferably, a cleaning assembly is provided inside the movable support, thereby providing the use conditions for pre-treatment of the concrete to be tested, the cleaning assembly includes two straight tooth plates and a meshing transmission assembly, the fan blades and the two straight tooth plates are respectively mounted on the surfaces of the two extended square tubes, and the meshing transmission assembly can be synchronously meshed and transmitted with the two straight tooth plates.

[0014] The selectively selected gear transmission assembly includes a gear shaft, the surface of the gear shaft is respectively clamped with an air delivery cylinder and a fixed frame through a bearing sleeve, the top of the fixed frame is installed on the inner wall of the top of the movable support, and a support plate is installed between the surface of the air delivery cylinder and the surface of the fixed frame, and a ventilation filter is nested in the top of the air delivery cylinder, and the two ends of the gear shaft are respectively meshed and transmission-connected with two of the spur gears, the fan blades are movably sleeved inside the air delivery cylinder and fixedly connected with the middle inner wall of the gear shaft, and the number of fan blades is not less than two, and the front end of the air delivery cylinder is fixedly connected with a hollow plate that is communicated with its own space, and a plurality of blowing holes are opened at the front end bottom of the hollow plate, and the output directions of the plurality of blowing holes are inclined toward the bottom of the movable support, and the meshing transmission assembly receives the kinetic energy transmitted by the meshing of the corresponding extended square tube through the spur gear plate, and then drives a plurality of fan blades to perform air delivery operations, thereby meeting the use requirements of air blowing and cleaning of concrete to be inspected.

[0015] The present invention has the following beneficial effects: 1. The present invention forms a movable detection and accommodating device by setting an extended square tube and a composite rubber ring. After the subsequent two detection and accommodating devices are combined with two external recovery boxes and two composite guide pipes in a one-to-one corresponding manner under the transmission of the lifting component, two highly sealed detection spaces can be automatically formed on the surface of the concrete to be detected. Then, after being used in conjunction with an anode electrode, a cathode electrode, a processor component and two temperature sensors, the chloride ion migration coefficient detection operation can be performed. The entire operation process is highly automated and highly sealed, fully ensuring the accuracy of the detection.

[0016] 2. The present invention forms a negative pressure reflux device through the negative pressure component and the first guide valve tube, which is then further combined with the composite rubber ring set in the hollow structure, the reflux hole on the inner wall of the composite rubber ring and the corresponding external recovery box, and the second guide valve tube set at the bottom of the external recovery box. By utilizing the operation effect of negative pressure pump suction, the used reagents can be negatively pressure-drained to the corresponding external recovery box through the reflux hole, the composite rubber ring and the first guide valve tube for recycling, thereby avoiding environmental pollution caused by the experimental reagents and solving the problems existing in the prior art.

[0017] 3. The present invention receives the corresponding lifting assembly through the meshing transmission assembly, and the lifting kinetic energy transmitted by the extended square tube through the meshing of the straight tooth plate drives multiple fan blades to perform air supply operations, and guides the accelerated airflow to the concrete surface to be tested, and performs air blowing and dust cleaning treatment on the concrete to be tested, thereby eliminating adverse factors in the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of the structure of the present invention; Figure 2 It is a front view schematic diagram of the structure of the present invention; Figure 3 It is a rear view schematic diagram of the structure of the present invention; Figure 4 It is an enlarged schematic diagram of the structural lifting assembly of the present invention; Figure 5 It is a bottom view schematic diagram of the composite rubber ring of the structure of the present invention; Figure 6 It is an enlarged schematic diagram of the negative pressure component of the structure of the present invention; Figure 7 The structure of the present invention Figure 1 The enlarged schematic diagram of point A in the middle; Figure 8 It is an enlarged schematic diagram of the structure engagement transmission assembly of the present invention; Fig. 9 It is a partial cross-sectional schematic diagram of the gas delivery cylinder of the present invention.

[0019] In the figure: 1. movable support; 2. anode electrode; 3. cathode electrode; 4. processor assembly; 5. external recovery box; 6. composite guide pipe; 61. main connecting tube; 62. insulating elastic hose; 63. bottom connecting tube; 7. extended square tube; 8. composite rubber ring; 9. lifting assembly; 91. push rod electric cylinder; 92. auxiliary bracket; 93. linkage plate; 94. guide tube; 95. restraint rod; 10. temperature sensor; 11. negative pressure assembly; 111. negative pressure pump; 112. main air supply pipe; 113. branch valve pipe; 12. first guide valve pipe; 13. straight tooth plate; 14. meshing transmission assembly; 141. gear shaft; 142. air supply cylinder; 143. fixing frame; 144. hollow plate; 145. blowing hole; 15. second guide valve pipe; 16. reflux hole; 17. pressure sensor; 18. fan blade. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-9 , a nondestructive testing device for the anti-permeability performance of a concrete structure, comprising a mobile support 1, an anode electrode 2, a cathode electrode 3, and a processor component 4. Two opposite external recycling boxes 5 are set inside the mobile support 1, and both sides of the front and rear ends of the bottom of the mobile support 1 are equipped with walking wheels to facilitate the movement and use of the overall device. A handle is installed on the rear end surface of the mobile support 1, and a support seat is installed between the surfaces of the two external recycling boxes 5 and the top surface of the mobile support 1 to ensure the stability of the two external recycling boxes 5. The insides of the two external recycling boxes 5 are both set with composite guide pipes 6, and the bottom outer sides of the two external recycling boxes 5 are both clamped with extended square tubes 7. The middle part of the mobile support 1 is provided with a lifting component 9 that can synchronously lift and drive the two extended square tubes 7; The lifting assembly 9 includes a push rod electric cylinder 91, an auxiliary bracket 92 mounted outside the shell of the push rod electric cylinder 91, the bottom of the auxiliary bracket 92 is installed on the top surface of the middle part of the movable support 1, the output end of the auxiliary bracket 92 is connected to a linkage plate 93, and the two sides of the linkage plate 93 are respectively connected to one side of the two extended square tubes 7. The lifting assembly 9 serves as a power source to provide automatic lifting conditions for the two extended square tubes 7. The top surface of the auxiliary bracket 92 is fixedly connected to a constraint rod 95, and the bottom of the constraint rod 95 is clamped with a guide cylinder 94 installed on the surface of the linkage plate 93. The clamping guide of the constraint rod 95 and the guide cylinder 94 can fully improve the stability of the reciprocating lifting of the linkage plate 93. Pressure sensors 17 are installed on the inner walls of the two outer recovery boxes 5, temperature sensors 10 are arranged in the two composite flow guide pipes 6, and liquid infusion tubes are installed on the tops of the two composite flow guide pipes 6. The top outer sides of the liquid infusion tubes are threadedly connected with sealing covers, and rubber ring pads are nested inside the two extended square tubes 7, and the inner walls of the rubber ring pads are tightly fitted with the bottom surfaces of the corresponding outer recovery boxes 5, thereby improving the sealing effect of the connection between the extended square tubes 7 and the corresponding outer recovery boxes 5; The bottoms of the two extended square tubes 7 are connected with composite rubber rings 8, the anode electrode 2 and the cathode electrode 3 are respectively sleeved inside the two composite flow guide pipes 6, the processor assembly 4 includes a processor, a conductivity meter and a power module, and the anode electrode 2 and the cathode electrode 3 are electrically connected to the conductivity meter and the power module through wires; A negative pressure component 11 is installed at the rear end of the top of the mobile support 1. The two input structures inside the negative pressure component 11 are respectively sleeved inside the two external recovery boxes 5. The negative pressure component 11 includes a negative pressure pump 111, a main air supply pipe 112 and two branch valve pipes 113. The input end of the negative pressure pump 111 is connected to one end of the main air supply pipe 112, and a fixing seat is installed between the shell surface of the negative pressure pump 111 and the surface of the rear end of the top of the mobile support 1. One end of the two branch valve pipes 113 is connected to the other end of the main air supply pipe 112. The other ends of the two branch valve pipes 113 are respectively sleeved on the middle inner side of the two external recovery boxes 5 as the input structure of the negative pressure component 11. The negative pressure component 11, as a negative pressure power source, cooperates with the corresponding composite rubber ring 8, the first guide valve pipe 12 and the external recovery box 5 to perform negative pressure recovery on the used detection solution to avoid the detection solution from polluting the use environment; The two composite rubber rings 8 are both hollow structures, and the inner walls at the bottom of the two composite rubber rings 8 are provided with reflux holes 16 communicating with the hollow spaces thereof. A first guide valve pipe 12 is installed between the composite rubber ring 8 and the corresponding external recovery box 5, and a second guide valve pipe 15 for draining liquid is installed at the bottom of the two external recovery boxes 5; The two composite flow guide pipes 6 are composed of a main connecting tube 61, an insulating elastic hose 62, and a bottom connecting tube 63. The insulating elastic hose 62 is installed between the main connecting tube 61 and the bottom connecting tube 63, and the insulating elastic hose 62 has a structural characteristic of being deformed under pressure. Therefore, after being matched with the negative pressure component 11, the subsequent detection solution can be pressurized in a negative pressure deformation manner, so that the detection solution is evenly and fully in contact with the concrete surface to be detected. The main connecting tube 61 is fixedly sleeved on the top inner side of the corresponding outer recovery box 5 and fixedly sleeved with the corresponding anode electrode 2 or cathode electrode 3 and the temperature sensor 10. The bottom of the bottom connecting tube 63 is fixedly sleeved with the bottom of the corresponding outer recovery box 5, and the bottom end of the bottom connecting tube 63 passes through the bottom structure of the outer recovery box 5 and extends to the corresponding extended square tube 7. The internal overall space of the composite flow guide pipe 6 is connected with the corresponding extended square tube 7 and the composite rubber ring 8 to form a detection space and form an integrated space; A cleaning assembly is arranged inside the mobile support 1, thereby providing the use conditions for pre-treatment of the concrete to be tested. The cleaning assembly includes two spur plates 13 and a meshing transmission assembly 14. The fan blades 18 and the two spur plates 13 are respectively mounted on the surfaces of the two extended square tubes 7. The meshing transmission assembly 14 can be synchronously meshed and driven with the two spur plates 13. The meshing transmission assembly 14 includes a gear shaft 141, the surface of which is respectively connected with a gas cylinder 142 and a fixing frame 143 through a bearing sleeve, the top of the fixing frame 143 is installed on the inner wall of the top of the movable support 1, and a support plate is installed between the surface of the gas cylinder 142 and the surface of the fixing frame 143, a ventilation filter is nested in the top of the gas cylinder 142, the two ends of the gear shaft 141 are respectively meshed and connected with two spur plates 13, and the fan blade 18 is movably sleeved inside the gas cylinder 142 and connected with the center of the gear shaft 141. The inner wall of the part is fixedly connected, and the number of fan blades 18 is not less than two. The front end of the air cylinder 142 is fixedly connected with a hollow plate 144 which is in communication with its own space. A plurality of blowing holes 145 are provided at the bottom of the front end of the hollow plate 144, and the output directions of the plurality of blowing holes 145 are all inclined toward the bottom of the movable support 1. The meshing transmission assembly 14 receives the kinetic energy transmitted by the meshing of the corresponding extended square tube 7 through the straight tooth plate 13, and then drives the plurality of fan blades 18 to perform air delivery operations, thereby meeting the use requirements of air blowing and cleaning of the concrete to be inspected.

[0022] Working principle: Embodiment 1 When the concrete surface to be inspected is clean, the whole device is moved to the concrete surface to be inspected, and then the push rod electric cylinder 91 inside the lifting assembly 9 is started, and the output end of the push rod electric cylinder 91 drives the two extended square tubes 7 to move downward synchronously through the linkage plate 93 until the bottom surfaces of the two composite rubber rings 8 are tightly fitted with the concrete surface to be inspected, thereby the two composite guide pipes 6 cooperate with the corresponding extended square tubes 7 and composite rubber rings 8 to form two inspection spaces; A certain amount of 10% sodium chloride solution reagent is injected into the composite flow guiding pipe 6 corresponding to the cathode electrode 3 through the top liquid replenishing pipe of the composite flow guiding pipe 6 corresponding to the cathode electrode 3. Similarly, a certain amount of deionized water reagent is injected into the composite flow guiding pipe 6 corresponding to the anode electrode 2 through the top liquid replenishing pipe of the composite flow guiding pipe 6 corresponding to the anode electrode 2. The amount of the two reagents added can reach 90% of the corresponding detection space. After the two reagents are added, the two sealing covers are compositely locked. At the same time, the two reagents are fully in contact with the concrete surface to be detected, the processor inside the processor component 4 is started, and then the power module is controlled to supply power to the anode electrode 2 and the cathode electrode 3 respectively. Since the two reagents are different, a voltage is formed between the anode electrode 2 and the cathode electrode 3, so that the solution penetrates into the concrete faster, and the conductivity meter is started. The conductivity meter measures the voltage between the anode electrode 2 and the cathode electrode 3. At the same time, the temperature sensor 10 arranged inside the composite flow guide pipe 6 corresponding to the anode electrode 2 measures the temperature of the deionized water inside the composite flow guide pipe 6 and transmits it to the automatic temperature compensator inside the conductivity meter. The conductivity meter calculates the conductivity in the deionized water. After a certain period of time, when the slope of the conductivity-time curve is constant, that is, when steady-state electromigration arrives, the concentration and time curve is obtained according to the relationship between conductivity and concentration through temperature correction, and the chloride ion migration coefficient is substituted into the existing equation to calculate the chloride ion migration coefficient. Then, the migration depth to the concrete structure can be reflected according to the chloride ion migration coefficient.

[0023] Embodiment 2 In the case where there is a lot of dust on the surface of the concrete to be tested, the mobile overall device moves back and forth in the concrete area to be tested. At the same time, the push rod electric cylinder 91 is opened and closed reciprocatingly, and the output end of the push rod electric cylinder 91 drives the two extended square tubes 7 and the two straight tooth plates 13 to move back and forth synchronously through the linkage plate 93, and then the two straight tooth plates 13 are synchronously meshed with the transmission gear shaft 141, so that the gear shaft 141 drives the fan blades 18 to rotate back and forth synchronously, and the rotation of the fan blades 18 is used to accelerate the air inside the air cylinder 142, and the accelerated airflow is blown to the concrete to be tested through the multiple blowing holes 145 set on the hollow plate 144, and then the dust on the surface of the concrete to be tested is cleaned by air blowing, eliminating the adverse factors for the subsequent concrete to be tested; After the concrete to be inspected is cleaned, the concrete inspection step can be performed according to the steps of the first embodiment.

[0024] Embodiment 3 The concrete detection step is performed according to the steps of the above embodiment 1; During the detection process, the negative pressure pump 111 and the valves inside the two branch valve tubes 113 are started, and the negative pressure pump 111 draws the air inside the two external recovery boxes 5 through the main air supply pipe 112 and the two branch valve tubes 113 under negative pressure. As the air pressure inside the two external recovery boxes 5 decreases, the insulating elastic hose 62 inside the two composite flow guide pipes 6 will be deformed, and then the detection solution inside the two composite flow guide pipes 6 will be pressurized in disguised form, so that the reagents contained in the two composite flow guide pipes 6 are evenly and fully in contact with the concrete. After the detection is completed, close the internal valves of the two branch valve tubes 113 and the negative pressure pump 111, open the internal valves of the first guide valve tubes 12 corresponding to the two outer recovery boxes 5, and then reopen the negative pressure pump 111. The negative pressure pump 111 draws the air inside the two outer recovery boxes 5 through the main air supply pipe 112 and the two branch valve tubes 113 under negative pressure, and then utilizes the negative pressure effect to make the reagents inside the two detection spaces pass through the corresponding reflux holes 16, the composite rubber ring 8 and the first guide valve tube 12 into the corresponding outer recovery box 5 for recovery and temporary storage, thereby avoiding the detection reagents from polluting the construction environment. After completion, close the push rod electric cylinder 91, reset the two extended square tubes 7 and the composite rubber ring 8, and then after the overall device is moved to the designated cleaning position, open the second guide valve tube 15 at the bottom of the two outer recovery boxes 5 to discharge and clean the detection reagents inside the two outer recovery boxes 5.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present invention, the fill pattern is only for distinguishing layers, without any other limitation.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nondestructive testing device for the anti-penetration performance of a concrete structure, comprising a movable support (1), an anode electrode (2), a cathode electrode (3), and a processor component (4), characterized in that: The movable support (1) is internally sleeved with two opposing outer recycling boxes (5), and the two outer recycling boxes (5) are internally sleeved with composite flow guide pipes (6), and the bottom outer sides of the two outer recycling boxes (5) are clamped with extended square tubes (7), and the middle part of the movable support (1) is provided with a lifting component (9) capable of synchronously lifting and lowering the two extended square tubes (7), and the bottoms of the two extended square tubes (7) are connected with composite rubber rings (8), and the anode electrode (2) and the cathode electrode (3) are respectively sleeved in the two composite flow guide pipes (6), and the processor component (4) comprises a processor, a conductivity meter and a power module, and the anode electrode (2) and the cathode electrode (3) are electrically connected to the conductivity meter and the power module through wires; A negative pressure component (11) is installed at the rear end of the top of the movable support (1), and two input structures inside the negative pressure component (11) are respectively mounted inside two external recovery boxes (5). The two composite rubber rings (8) are both hollow structures, and the inner walls at the bottoms of the two composite rubber rings (8) are provided with reflux holes (16) communicating with the hollow spaces thereof. A first guide valve tube (12) is installed between the composite rubber ring (8) and the corresponding external recovery box (5), and a second guide valve tube (15) for draining liquid is installed at the bottoms of the two external recovery boxes (5).

2. A nondestructive testing device for the anti-penetration performance of concrete structures according to claim 1, characterized in that: The lifting assembly (9) comprises a push rod electric cylinder (91), an auxiliary bracket (92) mounted outside the shell of the push rod electric cylinder (91), the bottom of the auxiliary bracket (92) being mounted on the top surface of the middle part of the movable support (1), the output end of the auxiliary bracket (92) being transmission-connected to a linkage plate (93), and the two sides of the linkage plate (93) being transmission-connected to one side of two extended square tubes (7) respectively.

3. A nondestructive testing device for the anti-penetration performance of concrete structures according to claim 2, characterized in that: A restraining rod (95) is fixedly connected to the top surface of the auxiliary bracket (92), and a guide cylinder (94) mounted on the surface of the linkage plate (93) is clamped on the bottom of the restraining rod (95).

4. The nondestructive testing device for the anti-penetration performance of concrete structure according to claim 1 is characterized by: Travel wheels are installed on both sides of the front and rear ends of the bottom of the movable support (1), a handle is installed on the rear end surface of the movable support (1), and a support seat is installed between the surface of the two outer recycling boxes (5) and the top surface of the movable support (1).

5. The nondestructive testing device for the anti-penetration performance of concrete structure according to claim 1 is characterized by: The negative pressure component (11) comprises a negative pressure pump (111), a main air supply pipe (112), and two branch valve pipes (113); an input end of the negative pressure pump (111) is connected to one end of the main air supply pipe (112); a fixing seat is installed between a shell surface of the negative pressure pump (111) and a surface at the rear end of the top of the movable support (1); one end of the two branch valve pipes (113) is connected to the other end of the main air supply pipe (112); and the other ends of the two branch valve pipes (113) are respectively sleeved on the inner side of the middle part of the two outer recovery boxes (5) as the input structure of the negative pressure component (11).

6. The nondestructive testing device for the anti-penetration performance of concrete structure according to claim 1 is characterized by: A pressure sensor (17) is installed on the inner wall of the two outer recovery boxes (5), a temperature sensor (10) is arranged in the two composite flow guide pipes (6), and a liquid infusion tube is installed on the top of the two composite flow guide pipes (6), and a sealing cover is threadedly connected to the outer side of the top of the liquid infusion tube, and a rubber ring gasket is embedded inside the two extended square tubes (7), and the inner wall of the rubber ring gasket is tightly fitted with the bottom surface of the corresponding outer recovery box (5).

7. The nondestructive testing device for the anti-penetration performance of concrete structure according to claim 1 is characterized by: The two composite flow guide pipes (6) are composed of a main connecting tube (61), an insulating elastic hose (62), and a bottom connecting tube (63); the insulating elastic hose (62) is installed between the main connecting tube (61) and the bottom connecting tube (63), and the insulating elastic hose (62) has a structural characteristic of being deformed under pressure; the main connecting tube (61) is fixedly sleeved on the top inner side of the corresponding outer recovery box (5) and is fixedly sleeved with the corresponding anode electrode (2) or cathode electrode (3) and the temperature sensor (10).

8. The nondestructive testing device for the anti-penetration performance of concrete structure according to claim 7, characterized in that: The bottom of the bottom connecting pipe (63) is fixedly sleeved with the bottom of the corresponding outer recovery box (5), and the bottom end of the bottom connecting pipe (63) penetrates the bottom structure of the outer recovery box (5) and extends to the inside of the corresponding extension square pipe (7).

9. The nondestructive testing device for the anti-penetration performance of concrete structure according to claim 1, characterized in that: A cleaning assembly is arranged inside the movable support (1), and the cleaning assembly comprises two spur plates (13) and a meshing transmission assembly (14). The fan blades (18) and the two spur plates (13) are respectively mounted on the surfaces of the two extended square tubes (7), and the meshing transmission assembly (14) is capable of synchronous meshing transmission with the two spur plates (13).

10. A nondestructive testing device for the anti-penetration performance of concrete structures according to claim 9, characterized in that: The meshing transmission assembly (14) comprises a gear shaft (141), the surface of the gear shaft (141) is respectively clamped with an air delivery cylinder (142) and a fixing frame (143) through a bearing sleeve, the top of the fixing frame (143) is mounted on the inner wall of the top of the movable support (1), and a support plate is installed between the surface of the air delivery cylinder (142) and the surface of the fixing frame (143), a ventilation filter is embedded in the top of the air delivery cylinder (142), and the two ends of the gear shaft (141) are respectively connected to the two straight teeth. The plate (13) is meshed and connected to the air cylinder (142) for transmission, the fan blade (18) is movably sleeved inside the air cylinder (142) and fixedly connected to the middle inner wall of the gear shaft (141), and the number of the fan blades (18) is not less than two, the front end of the air cylinder (142) is fixedly connected to a hollow plate (144) which is in communication with the air cylinder itself, the front end bottom of the hollow plate (144) is provided with a plurality of blowing holes (145), and the output directions of the plurality of blowing holes (145) are all inclined toward the bottom of the movable support (1).

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