Suspension bridge main cable dehumidification detection device

Abstract

The utility model discloses a suspension bridge main cable dehumidification detection device which is characterized in that when moisture in a suspension bridge main cable is detected, a detector transmits a control signal to a wireless communication controller in a power supply control box, and the wireless controller controls a pressure sensor and a sucking pump to start; an air pump sucks moisture in a main cable into an air collection detection box through a moisture absorption head, an arc-shaped air conveying pipe and a transition connecting pipe, and after a pressure sensor detects that the pressure in the air collection detection box rises to a set threshold value, a wireless communication controller controls the air pump to stop and controls a humidity detector to operate at the same time. The humidity detector detects moisture in the gas collection detection box, the humidity detector transmits a detected data signal to the wireless communication controller, and the wireless communication controller transmits the data to the detection center through a wireless signal, so that detection personnel can obtain humidity detection data, more accurate detection data can be obtained, and the detection efficiency is improved. And errors are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of suspension bridge maintenance, and in particular to a dehumidification detection device for a main cable of a suspension bridge. Background Art

[0002] The main cable of a suspension bridge is a key part supporting the entire bridge structure. It is usually composed of high-strength steel cables or steel cables, which are responsible for bearing the weight of vehicles or pedestrians on the bridge and transferring this weight to the pillars or piers of the bridge. The main cable of a suspension bridge is suspended on the main tower or main pier and remains stable with a certain tension to ensure the safe operation of the bridge. During the use of the main cable of a suspension bridge, if it is in a humid or moisture-containing environment for a long time, it is easy to cause corrosion of the metal material. Corrosion will weaken the strength and durability of the main cable, thereby reducing the safety of the suspension bridge. Therefore, it is necessary to regularly perform dehumidification detection on the inside of the main cable, so as to timely detect the moisture or water in the main cable and take measures to deal with it. However, traditional moisture detection methods can only detect the humidity of the air at the outer edge of the main cable, and the water vapor gathered in the center of the main cable is not easy to dissipate and detect, which leads to inaccurate detection data and large errors, which in turn affects the judgment of the timing of dehumidification inside the main cable. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of this application is to provide a dehumidification detection device for the main cable of a suspension bridge to solve the problems raised in the above-mentioned background technology.

[0004] According to one aspect of the present application, a dehumidification detection device for a main cable of a suspension bridge comprises a protective sealing cover, a moisture collection component, an air pump, an air collecting detection box and a power control box, wherein the protective sealing cover is fixedly mounted on the outer surface of an exposed section of the main cable of the suspension bridge, a protective box is fixedly mounted on the outer side of the protective sealing cover, an air pump and a power control box are mounted on the protective box, a moisture collection component is arranged in the protective sealing cover, the moisture collection component extends to the interior of the protective box and is connected to the air suction port of the air pump, an air collecting detection box is fixedly mounted in the protective box, the air outlet of the air pump is connected to the air collecting detection box, a humidity detector is installed in the air collecting detection box, a pressure sensor and an air outlet pipe are installed on the air collecting detection box, the interior of the air collecting detection box is connected to the outside through the air outlet pipe, an electromagnetic valve is mounted on the air outlet pipe, and the humidity detector, the pressure sensor and the electromagnetic valve are all electrically connected to the power control box.

[0005] Preferably, the moisture collection component includes an arc-shaped gas pipe 1, an arc-shaped gas pipe 2 and a transition connecting pipe, the arc-shaped gas pipe 1 and the arc-shaped gas pipe 2 are both semicircular structures and are arranged inside the protective sealing cover, the ports of the arc-shaped gas pipe 1 and the arc-shaped gas pipe 2 are sealed and spliced ​​with each other to form a full-circular structure and are arranged on the outer periphery of the main cable of the suspension bridge, the arc-shaped gas pipe 1 or the arc-shaped gas pipe 2 is connected to the transition connecting pipe, the transition connecting pipe is arranged inside the protective box, and the transition connecting pipe is connected to the suction port of the suction pump, and the inner arc surfaces of the arc-shaped gas pipe 1 and the arc-shaped gas pipe 2 are uniformly and equidistantly connected along the circumferential direction with multiple moisture absorption heads, and the multiple moisture absorption heads are all arranged toward the center of the main cable of the suspension bridge.

[0006] Preferably, the two ports of the arc-shaped gas delivery pipe 1 and the two ports of the arc-shaped gas delivery pipe 2 are sealed and connected by interference fit of a plug-in joint, and a sealing ring is provided between the plug-in joints.

[0007] Preferably, the protective sealing cover is formed by sealingly assembling two semicircular cover shells, and a plurality of mounting sockets are fixedly provided on the inner side walls of the two semicircular cover shells along the circumferential direction, and the arc-shaped gas pipe 1 and the arc-shaped gas pipe 2 are respectively clamped on the mounting sockets of the two semicircular cover shells.

[0008] Preferably, the power control box is installed below the outer side of the protection box, and a power supply and a wireless communication controller are arranged in the power control box.

[0009] The advantages of the present application over the prior art are as follows: a dehumidification detection device for a main cable of a suspension bridge of the present application, through the arrangement of a moisture collection component, an air pump and an air collection detection box, when regularly detecting the moisture inside the main cable of the suspension bridge, the detection personnel transmit a control signal to the wireless communication controller in the power control box of the detection device, the wireless controller controls the pressure sensor and the air pump to start, the air suction port of the air suction pump performs air suction work, and then the moisture inside the main cable is extracted into the arc-shaped gas pipeline 1 and the arc-shaped gas pipeline 2 through the moisture absorption heads distributed on the sides of the main cable, and then the moisture in the arc-shaped gas pipeline 1 and the arc-shaped gas pipeline 2 enters the air suction pump through the transition connecting pipe, and then the extracted moisture enters the air collection detection box from the air outlet of the air suction pump, and as the moisture continues to enter the air collection detection box, its internal pressure increases, After the pressure sensor detects that the pressure in the gas collecting detection box rises to the set threshold, the wireless communication controller controls the vacuum pump to stop and controls the humidity detector to run at the same time. The humidity detector detects the moisture in the gas collecting detection box, and the humidity detector transmits the detected data signal to the wireless communication controller. The wireless communication controller transmits the data to the detection center via wireless signals so that the detection personnel can obtain the humidity detection data. Then the wireless communication controller controls the solenoid valve on the air outlet pipe to open to discharge the moisture in the gas collecting detection box until the pressure sensor detects that the pressure in the gas collecting detection box returns to the initial value. The wireless communication controller controls the solenoid valve on the air outlet pipe to close. The detection personnel can perform multiple tests on the humidity detection steps of the main cable of the suspension bridge through the above steps to obtain more accurate detection data and reduce errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a stereoscopic diagram of a dehumidification detection device for a main cable of a suspension bridge after installation according to an embodiment of the present application.

[0011] Figure 2 It is a stereoscopic diagram of the internal structure of a suspension bridge main cable dehumidification detection device after installation according to one embodiment of the present application.

[0012] Figure 3 It is a top sectional view of a dehumidification detection device for a main cable of a suspension bridge after installation according to one embodiment of the present application.

[0013] Figure 4 This is a main cross-sectional view of a dehumidification detection device for a main cable of a suspension bridge after installation according to an embodiment of the present application.

[0014] Figure 5 This is a disassembled diagram of a moisture collection component of a dehumidification detection device for a main cable of a suspension bridge according to an embodiment of the present application.

[0015] Figure 6 It is a stereoscopic diagram of a semicircular cover of a dehumidification detection device for a main cable of a suspension bridge according to an embodiment of the present application.

[0016] Figure numerals: 1. Protective sealing cover; 101. Semicircular cover shell; 102. Mounting base; 2. Moisture collection assembly; 201. Arc-shaped gas pipe one; 202. Arc-shaped gas pipe two; 203. Transition connecting pipe; 204. Desiccant head; 205. Plug connector; 206. Sealing ring; 3. Vacuum pump; 4. Gas collection and detection box; 5. Power control box; 6. Main cable of suspension bridge; 7. Protection box; 8. Humidity detector; 9. Pressure sensor; 10. Exhaust pipe; 11. Solenoid valve. DETAILED DESCRIPTION

[0017] In order to make the content of this application easier to understand, the technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the drawings in the embodiments of this application. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached drawings. Figure 4 As used herein, the terms "inward" and "outward" refer to directions toward and away from, respectively, the geometric center of the particular component.

[0018] like Figure 1 to Figure 6As shown, a dehumidification detection device for the main cable of a suspension bridge comprises a protective sealing cover 1, a moisture collecting component 2, an air pump 3, an air collecting detection box 4 and a power control box 5. The protective sealing cover 1 is fixedly arranged on the outer surface of the exposed section of the main cable 6 of the suspension bridge, a protective box 7 is fixedly installed on the outer side of the protective sealing cover 1, an air pump 3 is installed on the top of the protective box 7, and a power control box 5 is installed on the bottom of the protective box 7. The power control box 5 is arranged below the protective box 7 to prevent rain, snow and dew from directly falling on the power control box 5 to a certain extent. A power supply and a wireless communication controller are arranged in the power control box 5, and a moisture collecting component 2 is arranged in the protective sealing cover 1. The moisture collecting component 2 extends to the inside of the protective box 7 and It is connected to the air suction port of the air suction pump 3, and a gas collecting detection box 4 is fixedly installed in the protective box 7. The air outlet of the air suction pump 3 is connected to the gas collecting detection box 4. A humidity detector 8 is installed in the gas collecting detection box 4. A pressure sensor 9 and an air outlet pipe 10 are installed on the gas collecting detection box 4. The interior of the gas collecting detection box 4 is connected to the outside through the air outlet pipe 10. A solenoid valve 11 is installed on the air outlet pipe 10. The humidity detector 8, the pressure sensor 9 and the solenoid valve 11 are all electrically connected to the power supply and the wireless communication controller; specifically, the moisture collection component 2 includes an arc-shaped gas supply pipe 1 201, an arc-shaped gas supply pipe 202 and a transition connecting pipe 203, and the arc-shaped gas supply pipe 1 201 and the arc-shaped gas supply pipe 2 202 are both semicircular structures. In addition, the protective sealing cover 1 is formed by assembling two semicircular cover shells 101. A plurality of mounting bases 102 are fixedly arranged on the inner side walls of the two semicircular cover shells 101 along the circumferential direction. The arc-shaped gas pipe 1 201 and the arc-shaped gas pipe 2 202 are respectively clamped on the mounting bases 102 of the two semicircular cover shells 101. The two semicircular cover shells 101 are sealed and assembled to form a protective sealing cover 1 with a full-circular structure. The ports of the arc-shaped gas pipe 1 201 and the ports of the arc-shaped gas pipe 2 202 are connected by interference sealing through a plug-in interface to form a full-circular structure and are arranged on the outer periphery of the main cable 6 of the suspension bridge and inside the protective sealing cover 1, and a sealing ring 2 is arranged between the plug-in joints 205. 06, in order to increase the sealing performance of the plug-in joint 205, in this design, through the detachable design of the arc-shaped gas pipe 1 201 and the arc-shaped gas pipe 202 and the protective sealing cover 1, the detection device can be conveniently installed and disassembled on the main cable 6 of the suspension bridge, the arc-shaped gas pipe 1 201 or the arc-shaped gas pipe 202 is connected with the transition connecting pipe 203, the transition connecting pipe 203 is arranged inside the protective box 7, the transition connecting pipe 203 is connected to the suction port of the vacuum pump 3, and the inner arc surfaces of the arc-shaped gas pipe 1 201 and the arc-shaped gas pipe 202 are evenly and equidistantly connected along the circumferential direction with multiple desiccant heads 204, and the multiple desiccant heads 204 are all arranged toward the center of the main cable 6 of the suspension bridge.

[0019] In summary, through the arrangement of the moisture collection component 2, the vacuum pump 3 and the gas collection detection box 4, when the moisture inside the main cable 6 of the suspension bridge is regularly detected, the detection personnel will transmit a control signal to the wireless communication controller in the power control box 5 of the detection device, and the wireless controller will control the pressure sensor 9 and the vacuum pump 3 to start, and the vacuum port of the vacuum pump 3 will perform the vacuuming work, and then the moisture inside the main cable will be extracted into the arc gas pipeline 1 and the arc gas pipeline 2 through the moisture absorption head 204 distributed on the side of the main cable, and then the moisture in the arc gas pipeline 1 and the arc gas pipeline 2 will enter the vacuum pump 3 through the transition connecting pipe 203, and then the extracted moisture will enter the gas collection detection box 4 from the air outlet of the vacuum pump 3. As the moisture continues to enter the gas collection detection box 4, its internal pressure increases, and the pressure sensor 9 detects the moisture inside the gas collection detection box 4. After the pressure rises to the set threshold, the wireless communication controller controls the vacuum pump 3 to stop and controls the humidity detector 8 to run. The humidity detector 8 detects the moisture in the gas collecting detection box 4. The humidity detector 8 transmits the detected data signal to the wireless communication controller. The wireless communication controller transmits the data to the detection center via wireless signals so that the detection personnel can obtain the humidity detection data. Then the wireless communication controller controls the solenoid valve 11 on the air outlet pipe 10 to open to discharge the moisture in the gas collecting detection box 4 until the pressure sensor 9 detects that the pressure in the gas collecting detection box 4 returns to the initial value. The wireless communication controller controls the solenoid valve 11 on the air outlet pipe 10 to close. The detection personnel can perform multiple detections on the humidity detection steps of the suspension bridge main cable 6 to obtain more accurate detection data and reduce errors.

[0020] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application are described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, without departing from the spirit and scope defined by the claims of the present application.

Claims

1. A dehumidification detection device for a main cable of a suspension bridge, comprising a protective sealing cover (1), a moisture collecting assembly (2), an air pump (3), an air collecting detection box (4) and a power supply control box (5), characterized in that: The protective sealing cover (1) is fixedly mounted on the outer surface of the exposed section of the main cable (6) of the suspension bridge; a protective box (7) is fixedly mounted on the outer side of the protective sealing cover (1); an air pump (3) and a power control box (5) are mounted on the protective box (7); a moisture collection component (2) is arranged inside the protective sealing cover (1); the moisture collection component (2) extends into the interior of the protective box (7) and is connected to the air suction port of the air pump (3); an air collection detection box (4) is fixedly mounted inside the protective box (7); the air pump (3) and a power control box (5) are mounted on the protective box (7); a moisture collection component (2) is arranged inside the protective sealing cover (1); the moisture collection component (2) extends into the interior of the protective box (7) and is connected to the air suction port of the air pump (3); a gas collection detection box (4) is fixedly mounted inside the protective box (7); The air outlet of (3) is connected to the air collecting detection box (4), a humidity detector (8) is installed in the air collecting detection box (4), a pressure sensor (9) and an air outlet pipe (10) are installed on the air collecting detection box (4), the interior of the air collecting detection box (4) is connected to the outside through the air outlet pipe (10), and an electromagnetic valve (11) is installed on the air outlet pipe (10), and the humidity detector (8), the pressure sensor (9) and the electromagnetic valve (11) are all electrically connected to the power control box (5).

2. A dehumidification detection device for main cable of a suspension bridge according to claim 1, characterized in that: The moisture collection assembly (2) comprises an arc-shaped gas pipe 1 (201), an arc-shaped gas pipe 2 (202) and a transition connection pipe (203); the arc-shaped gas pipe 1 (201) and the arc-shaped gas pipe 2 (202) are both semicircular structures and are arranged inside the protective sealing cover (1); the ports of the arc-shaped gas pipe 1 (201) and the arc-shaped gas pipe 2 (202) are sealed and spliced ​​with each other to form a full-circular structure and are arranged on the outer periphery of the main cable (6) of the suspension bridge; the arc-shaped gas pipe 1 (201) or The arc-shaped gas pipe 2 (202) is connected to the transition connecting pipe (203), and the transition connecting pipe (203) is arranged inside the protection box (7). The transition connecting pipe (203) is connected to the suction port of the suction pump (3). The inner arc surfaces of the arc-shaped gas pipe 1 (201) and the arc-shaped gas pipe 2 (202) are uniformly and equidistantly connected along the circumferential direction and a plurality of moisture absorption heads (204) are arranged toward the center of the main cable (6) of the suspension bridge.

3. A dehumidification detection device for main cable of a suspension bridge according to claim 2, characterized in that: The two ends of the arc-shaped gas delivery pipe 1 (201) and the two ends of the arc-shaped gas delivery pipe 2 (202) are sealed and connected via interference fit of a plug-in joint (205), and a sealing ring (206) is provided between the plug-in joints (205).

4. A dehumidification detection device for main cable of a suspension bridge according to claim 2, characterized in that: The protective sealing cover (1) is formed by sealingly assembling two semicircular cover shells (101), and a plurality of mounting sockets (102) are fixedly provided on the inner side walls of the two semicircular cover shells (101) along the circumferential direction, and the arc-shaped gas supply pipe 1 (201) and the arc-shaped gas supply pipe 2 (202) are respectively clamped on the mounting sockets (102) of the two semicircular cover shells (101).

5. A dehumidification detection device for main cable of a suspension bridge according to claim 1, characterized in that: The power control box (5) is installed below the outer side of the protection box (7), and a power supply and a wireless communication controller are arranged in the power control box (5).

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