Multifunctional air clamp for dehumidifying main cable of suspension bridge

Abstract

The utility model provides a multifunctional air clamp for dehumidifying a main cable of a suspension bridge, which comprises an upper semi-circular barrel and a lower semi-circular barrel which are sleeved outside the main cable, and combined straight seams of the upper semi-circular barrel and the lower semi-circular barrel are fixedly connected through a straight seam connecting flange; a first air supply flange and a second air supply flange are arranged at the top of the upper semicircular barrel; an exhaust hole is formed in the upper semicircular barrel, and a drainage hole is formed in the lower semicircular barrel; observation windows are symmetrically arranged on the upper semicircular barrel and the lower semicircular barrel respectively. The air clamp can be used for discharging wet air in the cable, so that the relative humidity in the cable is reduced, the corrosion of the cable is effectively slowed down, and the service life of the cable is prolonged; meanwhile, a corresponding endoscope is installed in the air clamp, so that the condition of the cable in the air clamp can be observed conveniently in the exhaust process.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge cable dehumidification technical field, concretely is a kind of multifunctional air clamp for suspension bridge main cable dehumidification. BACKGROUND

[0002] The cable of suspension bridge is the important part of bridge load bearing, in order to guarantee the safe operation of bridge, the reliability and safety of cable need to be guaranteed, but due to the existence of certain gap inside cable, it is easy to deposit certain wet air, and then accelerate the corrosion of cable steel wire, reduce the service life of cable.Therefore, in order to prolong the service life of cable, the wet air inside cable needs to be discharged, the relative humidity of the environment where main cable steel wire is located is reduced, so as to slow down the corrosion speed of steel wire, prolong the service life of suspension bridge, in this process, corresponding air clamp needs to be used to realize the above process. SUMMARY

[0003] The utility model aims at providing a kind of multifunctional air clamp for suspension bridge main cable dehumidification, this air clamp can be used for cable internal wet air discharge, and then reduce the relative humidity inside cable, effectively slow down the corrosion of cable, and then prolong the service life of cable;Meanwhile, corresponding endoscope is installed in the inside of this air clamp, so as to observe the cable condition inside air clamp in the process of exhausting.

[0004] In order to realize the above technical features, the utility model aims at being realized as follows: a kind of multifunctional air clamp for suspension bridge main cable dehumidification, including for being sleeved in the outside of main cable upper half barrel and lower half cylinder, the straight slit flange fixed connection between the straight slit combination of upper half barrel and lower half cylinder is fixedly connected;The top of upper half barrel is provided with first gas supply flange and second gas supply flange;The upper half barrel is provided with exhaust hole, and the lower half cylinder is provided with drain hole;Observation window is respectively arranged symmetrically on the upper half barrel and the lower half cylinder.

[0005] The first sealing strip is arranged on the ring slit end face of the upper half barrel and the lower half cylinder matched with the main cable;

[0006] Second sealing strip is arranged between the straight slit end face of the upper half barrel and the lower half cylinder matched.

[0007] The straight slit flange includes the connecting plate fixed on the outer wall of corresponding upper half barrel and lower half cylinder, the back of connecting plate is provided with reinforcing rib plate, and the connecting plate between both sides is fixedly connected by bolt assembly.

[0008] The first gas supply flange and the second gas supply flange are used alternately, and are communicated with gas supply pipe during dehumidification, and the gas supply pipe is connected with auxiliary cable through gas supply pipe connecting rope.

[0009] The first air supply flange and the second air supply flange are provided with pressure relief valves for pressure relief.

[0010] The inner part of the upper semicircular barrel and the lower semicircular barrel is symmetrically provided with an endoscope head for observing the corrosion condition of the main cable, and the endoscope head is connected with a video acquisition box through a cable.

[0011] The inner part of the upper semicircular barrel and the lower semicircular barrel is provided with an observation wire through a waterproof bolt assembly, and the observation wire is made of the same material as the main cable.

[0012] The waterproof bolt assembly comprises a tapping anchor rod, the observation wire is fixed to the inner end of the tapping anchor rod, the tapping anchor rod passes through the threaded hole of the side wall plate of the upper semicircular barrel and the lower semicircular barrel, and a conical sealing nut and a butterfly nut are sleeved on the tapping anchor rod.

[0013] The inner part of the upper semicircular barrel and the lower semicircular barrel is provided with a temperature and humidity sensor for detecting temperature and humidity.

[0014] The utility model has the following beneficial effects:

[0015] 1、 this air clamp can be used for cable internal wet air exhaust, further reduce the relative humidity in the cable, effectively slow down the corrosion of the cable, and further prolong the service life of the cable; Meanwhile, the corresponding endoscope is installed in the air clamp, so as to observe the cable condition in the air clamp during the exhaust process.

[0016] 2、 the first sealing strip and the second sealing strip can realize the sealing of the air clamp.

[0017] 3、 the straight slit connection flange can realize the reliable combination connection of the upper semicircular barrel and the lower semicircular barrel.

[0018] 4、 the air supply mode can be used for air supply to the air clamp, and then the wet air in the air clamp is exhausted. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described below in combination with the drawings and examples.

[0020] Figure 1 It is a plan view of the utility model embodiment 1.

[0021] Figure 2 It is a right view of the utility model embodiment 1.

[0022] Figure 3 It is a front view of the lower semicircular cylinder in the utility model embodiment 1.

[0023] Figure 4 It is a front view of the utility model embodiment 2 for installing the endoscope head.

[0024] Figure 5 It is the side view of installing endoscope lens in the embodiment 2 of the utility model.

[0025] Figure 6 It is the use process diagram of installing endoscope lens in the embodiment 2 of the utility model.

[0026] Figure 7 It is the front view of installing observation steel wire in the embodiment 3 of the utility model.

[0027] Figure 8 It is the side view of installing observation steel wire in the embodiment 3 of the utility model.

[0028] Figure 9 It is the partial enlarged view of waterproof bolt assembly in the embodiment 3 of the utility model.

[0029] Figure 10 It is the side sectional view of waterproof bolt assembly in the embodiment 3 of the utility model.

[0030] In the drawing: bolt assembly 1, connecting plate 2, reinforcing rib plate 3, upper half barrel 4, first sealing strip 5, first gas feeding flange 6, second gas feeding flange 7, observation window 8, lower half cylinder 9, drainage hole 10, second sealing strip 11, endoscope lens 12, cable hole 13, cable 14, video acquisition box 15, auxiliary cable 16, gas supply pipe connecting rope 17, pressure relief valve 18, gas supply pipe 19, observation steel wire 20, waterproof bolt assembly 21;

[0031] Tapped anchor rod 2101, conical sealing nut 2102, butterfly nut 2103. DETAILED DESCRIPTION

[0032] The embodiment of the utility model is further explained in combination with the drawings.

[0033] Embodiment 1:

[0034] Referring to Figures 1-3 The utility model provides a kind of multifunctional air clamp for the main cable dehumidification of suspension bridge, including the upper half barrel 4 and lower half cylinder 9 for being sleeved in the outside of main cable, the straight seam flange of the straight seam between the combination of upper half barrel 4 and lower half cylinder 9 is fixedly connected by straight seam connection method;The top of the upper half barrel 4 is provided with first gas feeding flange 6 and second gas feeding flange 7;The upper half barrel 4 is provided with exhaust hole, and the lower half cylinder 9 is provided with drainage hole 10;The upper half barrel 4 and lower half cylinder 9 are respectively provided with observation window 8 in symmetry.This air clamp can be used for cable internal wet air exhaust, to reduce the relative humidity in cable, effectively slow down the corrosion of cable, to extend the service life of cable.

[0035] Preferably, the upper half barrel 4 and the lower half cylinder 9 are made of 304L stainless steel, the length is 1000m, the inner diameter of the air clamp is 100mm larger than the outer diameter of the main cable, the upper and lower half barrel-shaped metal members are connected by connecting flanges, the inside is provided with stiffening ribs to enhance the shape deformation resistance, the side edges are connected through bolts, the straight seam of the air clamp bolt part and the ring seam at both ends are sealed by vulcanization sealant. The air clamp leaves an air hole and a drainage hole, the air hole is located in the upper half sleeve, and the drainage hole is located directly below the lower half sleeve. The top of the air clamp is provided with 2 sets of gas feeding flange interfaces, one spare and one in use. The upper and lower half barrels of the air clamp are each provided with a set of observation window made of tempered glass for observing the steel wire inside the main cable. The bottom is provided with a drain valve, which is used in the initial exhaust and closed later.

[0036] Further, the ring seam end face of the upper half barrel 4 and the lower half cylinder 9 matched with the main cable is provided with a first sealing strip 5; the straight seam end face between the upper half barrel 4 and the lower half cylinder 9 matched with each other is provided with a second sealing strip 11. The first sealing strip 5 and the second sealing strip 11 can realize the sealing of the air clamp.

[0037] Further, the straight seam connecting flange includes connecting plates 2 fixed on the outer walls of the corresponding upper half barrel 4 and lower half cylinder 9, the back of the connecting plate 2 is provided with a reinforcing rib plate 3, and the connecting plates 2 located on both sides are fixedly connected through the bolt assembly 1. The straight seam connecting flange can realize the reliable combination and connection of the upper half barrel 4 and the lower half cylinder 9.

[0038] Further, the first gas feeding flange 6 and the second gas feeding flange 7 are one spare and one in use, and are connected in communication with the gas supply pipe 19 when dehumidifying, and the gas supply pipe 19 is connected with the auxiliary cable 16 through the gas supply pipe connecting rope 17. The above-mentioned gas supply mode can be used for supplying gas to the air clamp, and then discharging the humid air inside.

[0039] Further, in order to protect the coating near the main cable air clamp, the air clamp gas feeding pressure is generally not greater than 3000pa, and the conventional gas feeding pressure is between 2500~3000pa. Due to the temporary failure of the valve, pressure relief valve and other special circumstances, the gas feeding pressure will exceed 3000pa in a short time, which will damage the main cable coating. Therefore, an emergency automatic pressure relief valve is installed on the air clamp, the pressure relief working range is 3500~5500pa, and the working mode is similar to the gas valve of the pressure cooker. When the working pressure is reached, it rises and releases. The air clamp pressure relief valve 18 is installed in the middle of the two sets of gas feeding flange interfaces.

[0040] Example 2:

[0041] See Figures 4-6In the embodiment, since the existing main cable air clamp observation window will reflect light, it is not convenient to take photos of the internal steel wire of the air clamp, and it is easy to accumulate dirt and cannot be cleaned after a long time, which makes the observation effect unclear and unsatisfactory. In order to overcome the limitations of the air clamp observation window, four endoscopes 12 are additionally arranged in the air clamp to observe the corrosion condition of the internal steel wire of the main cable. The inner part of the upper semicircular barrel 4 and the lower semicircular barrel 9 is symmetrically provided with the endoscope 12 for observing the corrosion condition of the main cable. The endoscope 12 is connected with a video acquisition box 15 through a cable 14. The cable 14 passes through a cable hole 13 arranged on the upper semicircular barrel 4.

[0042] The endoscope 12 uses a metal armored cable. The cable hole has a diameter of about 3 cm. An external thread cooperates with a waterproof cap for fastening and a rubber ring for sealing. The endoscope is connected to the video acquisition box 15 outside the air clamp through the cable. The video acquisition box 15 is integrated by a power supply module, an endoscope host, a storage card, a 5G transmission module, and a cloud storage component. The image of the main cable steel wire recorded by the endoscope 12 can be transmitted to the client through the 5G transmission module for user monitoring and viewing.

[0043] The model of the endoscope 12 is as follows:

[0044] The diameter of the endoscope 12 is ≤3 mm. The thinnest ultra-fine industrial endoscope 12 can reach 1.7 mm.

[0045] The endoscope 12 is arranged at the upper half of the air clamp, one on the left and one on the right, and one on the left and one on the right of the lower half.

[0046] The endoscope 12 is arranged at the upper half of the air clamp, one on the left and one on the right, and one on the left and one on the right of the lower half.

[0047] Embodiment 3:

[0048] Referring to Figures 7-10 Further, in the embodiment, the inner part of the upper semicircular barrel 4 and the lower semicircular barrel 9 is provided with an observation wire 20 through a waterproof bolt assembly 21. The observation wire 20 is made of the same material as the main cable.

[0049] Further, the waterproof bolt assembly 21 includes a threaded anchor rod 2101. The observation wire 20 is fixed to the inner end of the threaded anchor rod 2101. The threaded anchor rod 2101 passes through the threaded hole of the side wall plate of the upper semicircular barrel 4 and the lower semicircular barrel 9. A conical sealing nut 2102 and a butterfly nut 2103 are sleeved on the threaded anchor rod 2101.

[0050] The observation steel wires are made of the same material as the main cable steel wires, are pretreated first, and are tensioned to different degrees for 3-5 observation steel wires to better simulate the conditions of the main cable steel wires.

[0051] Further, the upper half-cylinder 4 and the lower half-cylinder 9 are internally provided with a temperature and humidity sensor for detecting temperature and humidity. In addition, the temperature and humidity sensor on the air clamp is easily affected by high temperature outside, so that the sensor data is inaccurate.

[0052] The working process and principle of the utility model are as follows:

[0053] When it is necessary to dehumidify the main cable, the upper half-cylinder 4 and the lower half-cylinder 9 are fixedly sleeved on the main cable, then the inside is supplied with air through the first air supply flange 6, and the air in the inside of the main cable is discharged, thereby achieving the purpose of air discharge.

Claims

1. A multifunctional air clamp for dehumidifying the main cable of a suspension bridge, characterized in that, It includes an upper semi-cylindrical tube (4) and a lower semi-cylindrical tube (9) for being fitted onto the outside of the main cable. The upper semi-cylindrical tube (4) and the lower semi-cylindrical tube (9) are fixedly connected by a straight seam connecting flange. The top of the upper semi-cylindrical tube (4) is provided with a first air supply flange (6) and a second air supply flange (7). The upper semi-cylindrical tube (4) is provided with an exhaust hole, and the lower semi-cylindrical tube (9) is provided with a drain hole (10). The upper semi-cylindrical tube (4) and the lower semi-cylindrical tube (9) are respectively provided with observation windows (8).

2. The multifunctional air clamp for dehumidifying the main cable of a suspension bridge according to claim 1, characterized in that, The upper semi-cylindrical tube (4) and the lower semi-cylindrical tube (9) are provided with a first sealing strip (5) on the annular seam end face that cooperates with the main cable; A second sealing strip (11) is provided between the straight seam end faces of the upper semi-cylinder (4) and the lower semi-cylinder (9) that cooperate.

3. A multifunctional air clamp for dehumidifying the main cable of a suspension bridge according to claim 1, characterized in that, The straight seam connecting flange includes a connecting plate (2) fixed on the outer wall of the corresponding upper half cylinder (4) and lower half cylinder (9). The back of the connecting plate (2) is provided with a reinforcing rib (3). The connecting plates (2) on both sides are fixedly connected by a bolt assembly (1).

4. A multifunctional air clamp for dehumidifying the main cable of a suspension bridge according to claim 1, characterized in that, The first air supply flange (6) and the second air supply flange (7) are used interchangeably and are connected to the air supply pipe (19) during dehumidification. The air supply pipe (19) is connected to the auxiliary cable (16) through the air supply pipe connecting rope (17).

5. A multifunctional air clamp for dehumidifying the main cable of a suspension bridge according to claim 4, characterized in that, The first air supply flange (6) and the second air supply flange (7) are provided with pressure relief valves (18) for pressure relief.

6. A multifunctional air clamp for dehumidifying the main cable of a suspension bridge according to claim 1, characterized in that, The upper semi-cylinder (4) and the lower semi-cylinder (9) are respectively symmetrically equipped with endoscopes (12) for observing the corrosion of the main cable. The endoscopes (12) are connected to the video acquisition box (15) via cables (14). The cables (14) pass through the cable holes (13) set on the upper semi-cylinder (4).

7. A multifunctional air clamp for dehumidifying the main cable of a suspension bridge according to claim 1, characterized in that, The upper semi-cylinder (4) and the lower semi-cylinder (9) are fitted with observation wires (20) through waterproof bolt assemblies (21). The observation wires (20) are made of the same material as the main cable.

8. A multifunctional air clamp for dehumidifying the main cable of a suspension bridge according to claim 7, characterized in that, The waterproof bolt assembly (21) includes a tapping anchor rod (2101). Observation wire (20) is fixed to the inner end of the tapping anchor rod (2101). The tapping anchor rod (2101) passes through the threaded holes of the side wall panels of the upper semi-cylinder (4) and the lower semi-cylinder (9). A tapered sealing nut (2102) and a wing nut (2103) are fitted on the tapping anchor rod (2101).

9. A multifunctional air clamp for dehumidifying the main cable of a suspension bridge according to claim 7, characterized in that, Temperature and humidity sensors for detecting temperature and humidity are installed inside the upper semi-cylinder (4) and the lower semi-cylinder (9).

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