CN112323624A - Dehumidification structure and dehumidification system of cable-stayed bridge branch silk pipe cable saddle - Google Patents

Abstract

The utility model provides a cable-stay bridge divides dehumidification structure and dehumidification system of silk pipe cable saddle, the dehumidification structure includes branch silk tube bank and the end anchor of fixed connection at branch silk tube bank tip, divides the silk tube bank to include many branch silk pipes, divides the intraductal steel strand wires that is equipped with of silk to divide and have the space between silk pipe and the steel strand wires, the end anchor includes a hollow enclosure space, divides the tip fixed connection of silk pipe to the end anchor, and the steel strand wires in it passes enclosure space is equipped with sealing device in the enclosure space and fills whole enclosure space and surround steel strand wires are equipped with breather pipe intercommunication end anchor outside in the end anchor, still are equipped with the air channel intercommunication in the end anchor breather pipe and divide the silk pipe. The cable-stayed bridge wire-separating pipe cable saddle has a reasonable structure and is easy to realize, and dry air can be filled into the cable-stayed bridge wire-separating pipe cable saddle for dehumidification; but for unchangeable cable-stay bridge branch silk pipe cable saddle provides the humidity that a real-time supervision divides silk pipe cable saddle to carry out the structure and the system of dehumidification, be favorable to improving cable saddle life, be favorable to the bridge operation safety in utilization.

Description

Dehumidification structure and dehumidification system of cable-stayed bridge branch silk pipe cable saddle

Technical Field

The invention relates to the technical field of bridge engineering, in particular to a dehumidifying structure and a dehumidifying method for a cable-stayed bridge wire-separating tubular cable saddle.

Background

The wire-separating pipe cable saddle is widely applied to a part of cable-stayed bridges, also called short-tower cable-stayed bridges, and is generally pre-embedded and installed on a main tower of the cable-stayed bridge. And the steel strand stay cable penetrates through a cable saddle pre-embedded in the bridge tower and is anchored on box girders on two sides of the bridge tower. Compared with the replaceable stay cable, the wire separating pipe cable saddle is an unchangeable component and is a permanent component with the same service life as the bridge, so the protection of the wire separating pipe cable saddle is very important. In the process of stay cable steel strand installation construction, due to friction of penetration installation and tensioning stress of the steel strand, a coating layer on the inner wall of the cable saddle branch wire pipe can be damaged.

The invention patent with the granted publication number of CN200955121Y and the name of 'bundled steel pipe assembly welded type wire separating pipe cable saddle for partial cable-stayed bridge' discloses a structure of a wire separating pipe cable saddle, but the technology has the defects that: the pore of the wire dividing pipe is not sealed, and moist air easily enters the pore of the wire dividing pipe during operation, so that the inner wall of the wire dividing pipe is corroded.

The invention patent with the publication number of CN208899331U and the name of 'a partial cable-stayed bridge wire-separating pipe cable saddle with the sealing protection function' discloses a technology for arranging sealing protection devices at two ends of the wire-separating pipe cable saddle, but the technology has the following defects: the packing for sealing is required to be injected after the stay cable steel strand is installed, the construction period of the stay cable is long and is generally at least more than several months, the stay cable is inevitably influenced by rain and snow weather and evaporation water vapor of a river channel at a bridge position during the construction period, and the moisture water vapor inevitably enters a wire dividing pipe pore channel of the cable saddle, so that even if the measures of sealing two ends of the cable saddle are adopted, the moisture water vapor is still accumulated in the wire dividing pipe pore channel of the cable saddle, and the hidden danger is brought to permanent corrosion prevention of the cable saddle.

Disclosure of Invention

The invention aims to provide a dehumidification structure of a cable saddle of a cable-stayed bridge branching pipe and a dehumidification system thereof, wherein the dehumidification structure has a sealing protection effect and can fully dehumidify the interior of the branching pipe, so that reasonable and effective dehumidification and long-term protection can be performed on the interior of the branching pipe of the cable saddle in the service life of a bridge.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a divide silk pipe cable saddle dehumidification structure, includes branch silk tube bank and the end anchor of fixed connection at branch silk tube bank tip, divide silk tube bank to include many branch silk pipes, divide the intraductal steel strand wires that are equipped with of silk, and divide to have the space between silk pipe and the steel strand wires, the end anchor includes a hollow enclosure space, the tip fixed connection who divides silk pipe to the end anchor to steel strand wires in it pass the enclosure space, be equipped with sealing device in the enclosure space and fill whole enclosure space and surround steel strand wires, it is outside to be equipped with breather pipe intercommunication end anchor in the end anchor, still be equipped with the air channel intercommunication in the end anchor breather pipe and branch silk pipe.

Preferably, the end anchor comprises an anchor backing plate and a connecting pipe which are connected with each other to form the closed space, the end part of the wire dividing pipe is fixedly connected to the connecting pipe, and the vent pipe is communicated to the outside through the anchor backing plate.

Preferably, a joint is arranged on the vent pipe and used for communicating the vent pipe to an external vent pipeline or used for sealing the vent pipe.

Preferably, the end anchor is the branch silk tube bank both ends are respectively one, and the breather pipe in the end anchor of one end is the intake pipe, and the breather pipe in the end anchor of the other end is the outlet duct, with intake-tube connection's joint is intake-tube structure, with the joint of outlet duct intercommunication is the outlet duct joint, with the air-channel of intake pipe intercommunication is first air-channel, with the air-channel of outlet duct intercommunication is the second air-channel.

Preferably, the cross section of the wire dividing pipe is rhombic or circular, and at least part of the wire dividing pipes are respectively provided with a steel strand.

Preferably, the air inlet pipe and the air outlet pipe are at least one group which is correspondingly arranged, or the number of the air inlet pipe and the number of the air outlet pipe are different.

Dehumidification system of cable-stay bridge branch silk pipe cable saddle, including foretell branch silk pipe cable saddle dehumidification structure, its characterized in that: the dehumidifier is characterized by further comprising a dehumidifier, a dry air feeding pipe, a dry air branch feeding pipe, a wet air branch return pipe and a wet air return pipe, wherein the air outlet end of the dehumidifier is connected to the dry air feeding pipe, the dry air feeding pipe is connected to the dry air branch feeding pipe, the dry air branch feeding pipe is connected to a cable saddle at one end of the wire splitting pipe bundle through a connector, the connector on the cable saddle at the other end of the wire splitting pipe bundle is connected to the wet air branch return pipe, the wet air branch return pipe is connected to the wet air return pipe, and the wet air return pipe is connected to the air inlet end of the dehumidifier.

Preferably, the system also comprises a valve control system, wherein the valve control system comprises a valve arranged on the dry air branch air supply pipe and used for controlling the opening and closing of the gas circulation in the dry air branch air supply pipe, a valve control cabinet and an electric control circuit, and the opening and closing functions of the valve are realized through the operation of the valve control cabinet and the transmission control of the electric control circuit.

Preferably, including humidity detecting system, humidity detecting system includes the hygrometer, humidity monitoring display cabinet and monitoring data transmission line, the hygrometer is installed in humid air branch back flow, and measured humidity data passes through transmission line and conveys to humidity monitoring display cabinet, and when the humidity value that records is higher than the setting value temperature monitoring display cabinet will send warning signal.

Preferably, the branch dry air supply pipe and the branch wet air return pipe are correspondingly provided with a plurality of groups which are respectively connected to the air inlet pipe and the air outlet pipe of the cable saddles, and the valve and the hygrometer also comprise a plurality of groups which are respectively arranged on the branch dry air supply pipe and the branch wet air return pipe which are connected with the cable saddles.

1) The cable-stayed bridge wire-separating pipe cable saddle has a reasonable structure and is easy to realize, and dry air can be filled into the cable-stayed bridge wire-separating pipe cable saddle for dehumidification;

2) but for unchangeable cable-stay bridge branch silk pipe cable saddle provides the humidity that a real-time supervision divides silk pipe cable saddle to carry out the structure and the system of dehumidification, be favorable to improving cable saddle life, be favorable to the bridge operation safety in utilization.

Drawings

Fig. 1 is a schematic view of a dehumidifying structure of a cable-stayed bridge wire-separating pipe cable saddle according to an embodiment of the invention.

FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1 (the cross-section of the filament separating tube is circular).

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1 (the cross-section of the filament separating tube is diamond-shaped).

Fig. 4 is a schematic view of a cable-stayed bridge wire-separating pipe saddle dehumidification system according to a first embodiment of the invention.

Fig. 5 is a schematic view of a cable-stayed bridge wire-separating pipe saddle dehumidification system according to a second embodiment of the invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1-3, the cable-stayed bridge split-wire pipe saddle dehumidification structure of the first embodiment includes a split-wire pipe bundle 4 and an end anchor fixedly connected to an end of the split-wire pipe bundle 4. The end anchor comprises an anchor backing plate 2 and a connecting pipe 3 which is fixed with the anchor backing plate 2 to form a closed space. The end part of the filament separating tube bundle 4 is fixedly connected with the end part of the connecting tube 3.

The wire dividing tube bundle 4 comprises a plurality of wire dividing tubes, steel strands 1 are inserted into the wire dividing tubes, at least part of the wire dividing tubes are respectively provided with one steel strand, namely each wire dividing tube is respectively provided with one steel strand or part of the wire dividing tubes are not provided with the steel strands 1, for example, the number of the wire dividing tubes is n, and the number of the steel strands is not more than n. As shown in fig. 2 and 3, a gap is formed between the wire dividing pipe and the steel strand 1, i.e. the diameter of the steel strand 1 is smaller than the inner diameter of the wire dividing pipe. The cross section of the branched tubes, as shown in fig. 2 and 3, may be various, for example, a circular cross section as shown in fig. 2, or a diamond shape as shown in fig. 3, as long as a plurality of branched tubes can abut against each other to form a branched tube bundle.

The end part of the wire splitting tube bundle 4 is fixed on the connecting tube 3, the steel strand 1 in the wire splitting tube bundle passes through the anchor backing plate 2, the connecting tube 3 and a closed space enclosed by the anchor backing plate and the connecting tube, a sealing device 7 is arranged in the closed space to fill the whole closed space, and the steel strand 1 in the closed space is also enclosed. The sealing device 7 prevents moisture or dust on the outside of the cable saddle from entering the filament bundle 4.

The inside of end anchor is equipped with the breather pipe, the breather pipe runs through the anchor backing plate of end anchor and sealing device 7 in it, and this breather pipe intercommunication end anchor is outside and inside the end anchor to still be equipped with the air channel in the enclosure space that anchor backing plate 2 and connecting pipe 3 enclose, the air channel communicates this breather pipe and divides the silk pipe, and then divides the space between silk pipe and the steel strand wires 1 to pass through air channel and breather pipe and can communicate to the outside. The outer end of the vent pipe can be provided with a joint for sealing the vent pipe or connecting the vent pipe with an external vent pipeline. The number of the vent grooves can be multiple, when the number of the vent pipes is multiple, the vent grooves can be respectively communicated with a part of the vent pipes and a part of the wire dividing pipes, and when one vent pipe is provided, the vent grooves can be respectively communicated with the vent pipe and the part of the wire dividing pipes; the ventilation groove can be one, when the ventilation pipe is one, the ventilation pipe is communicated with one of the branch wire pipes, or when the ventilation pipe is multiple, the ventilation pipe is communicated with all the branch wire pipes.

Because the end anchors are respectively arranged at two ends of the devillicate tube bundle 4, the vent pipe on the end anchor at one end of the devillicate tube bundle is an air inlet pipe 8, and the vent pipe on the end anchor at the other end is an air outlet pipe 9. The air inlet pipe 8 and the air outlet pipe 9 respectively penetrate through an anchor backing plate of the end anchor and a sealing device 7 in the anchor backing plate, the vent grooves in the end anchor are communicated, and the vent grooves of the two end anchors respectively comprise a first vent groove 5 and a second vent groove 10. The outer ends of the air inlet pipe 8 and the air outlet pipe 9 are respectively connected with an air inlet pipe joint 11 and an air outlet pipe joint 14, and are connected with an external ventilation pipeline through the air inlet pipe joint and the air outlet pipe joint 14.

The dry gas in the external vent pipe can enter the end anchor from the gas inlet pipe of the end anchor at one end of the branch silk tube bundle, then enters each branch silk tube through the first vent grooves 5, and then is discharged from the second vent grooves 10 on the end anchor at the other end of the branch silk tube through the gas outlet pipe 9 to the external pipeline, so as to perform dehumidification work for the branch silk tube bundle and the end anchor.

In the above embodiment, the vent pipe in the end anchor is at least one corresponding group in the end anchors at the two ends, that is, the air inlet pipe and the air outlet pipe are respectively in one-to-one correspondence, and the number of the vent pipe is the same, and may be multiple groups correspondingly arranged in the end anchors at the two ends, or be in non-corresponding arrangement, that is, the number of the air inlet pipe and the number of the air outlet pipe are not the same, for example, the air inlet pipe is one, the air outlet pipe is multiple, or the air outlet pipe is multiple.

As shown in fig. 4, the dehumidifying system having the above-described dehumidifying structure includes a dehumidifier 18, a dry air supply pipe 13, a dry air branch supply pipe 12, a wet air branch return pipe 16, and a wet air return pipe 17. An air outlet end of the dehumidifier 18 is connected to a dry air feeding pipe 13, the dry air feeding pipe 13 is connected to a dry air branch feeding pipe 12, the dry air branch feeding pipe 12 is communicated to a dehumidifying structure of a cable saddle through an air inlet joint 11, an air outlet pipe joint 14 on the cable saddle at the other end is sequentially connected with a wet air branch return pipe 16 and a wet air return pipe 17, and the wet air return pipe 17 is connected to an air inlet end of the dehumidifier.

The system further comprises a valve control system and a humidity detection system, wherein the valve control system comprises a valve 19 arranged on the dry air branch air supply pipe 12 and is used for controlling the opening and closing of the air circulation in the dry air branch air supply pipe 12. The valve control cabinet 20 and the electric control circuit 22 are further included, and the opening and closing functions of the valve 19 are realized through the operation of the valve control cabinet 20 and the transmission control of the electric control circuit 22.

The humidity detection system comprises a hygrometer 15, a humidity monitoring display cabinet 21 and a monitoring data transmission line 23, wherein the hygrometer 15 is installed on a wet air branch return pipe 16, measured humidity data are downloaded to the humidity monitoring display cabinet 21 through the transmission line 23, when the measured humidity value is higher than a set value, a warning signal is sent out, the dehumidifier can be opened to perform dehumidification operation, and the dehumidifier can be automatically controlled or manually opened.

The dehumidification working process of the system is as follows: starting a dehumidifier 18, sending dry air out, leading the dry air to a cable saddle air inlet pipe 8 through a dry air feeding pipe 13 and a dry air branch air feeding pipe 12, leading the dry air to flow to each filament separating pipe of a cable saddle after passing through a first ventilation groove 5, taking away moisture in the filament separating pipes, discharging the moisture through a second ventilation groove 10 and an air outlet pipe 9, leading the discharged wet air to the dehumidifier 18 through a wet air branch return pipe 16 and a wet air return pipe 17, leading the wet air to the cable saddle after being dehumidified and forming dry air again, and stopping the dehumidifier 18 after the circulation is repeated and when the humidity value measured by a hygrometer 15 reaches the requirement, thus finishing the dehumidification of the cable saddle. During the operation of the bridge cable saddle, when the measured value of the hygrometer 15 changes and is lower than the set value, the humidity monitoring cabinet 21 sends out a warning signal and the cable saddle position number, the valve control cabinet 20 opens the valve 19 on the cable saddle dry air branch air supply pipe 12 with the corresponding number, the dehumidifier 18 is started, dry air is sent out for dehumidification, when the measured humidity values of all the hygrometers 19 reach the required set value, the dehumidifier 18 is stopped, the cable saddle dehumidification is completed, and therefore the purposes of real-time monitoring and dehumidification of the cable saddle of the branch pipe are achieved.

Fig. 5 is a schematic view of a dehumidification system according to a second embodiment of the present invention. In this embodiment, the dehumidifying structure in the wire separating tube cable saddle is the same as that of the first embodiment, except that the dry air branch supply pipe 12 and the wet air branch return pipe 16 comprise a plurality of sets, which are respectively connected to different wire separating tube cable saddles to perform dehumidifying operation on the wire separating tube bundles of different cable saddles.

Each dry air branch air supply pipe 12 is connected with one end of a cable saddle through an air inlet pipe connector 11, the wet air return pipe 17 is branched into a plurality of wet air branch return pipes 16, each branch return pipe 16 is connected with the other end of the cable saddle through an air outlet pipe connector 14, and thus the dehumidifier 18 and the cable saddles form a circulating air flow channel together. Similarly, a plurality of valves 19 are installed on a plurality of dry air branch supply pipes 12 connected with the cable saddle and respectively connected with a valve control cabinet 20 through an electric control circuit 22, and a plurality of hygrometers 15 are installed on a plurality of wet air branch return pipes 16, so that the dehumidification, valve control and monitoring systems of a plurality of cable saddles can be integrated together.

The dehumidification structure and the dehumidification system can detect the humidity of the devillicate tube bundle and the end anchor in real time through the hygrometer, and effectively dehumidify the devillicate tube bundle and the end anchor, so that the service life of the cable saddle is prolonged, and the bridge is safe to operate and use.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. The utility model provides a cable-stay bridge divides dehumidification structure of silk pipe cable saddle, includes branch silk tube bank (4) and the end anchor of fixed connection at branch silk tube bank (4) tip, divide the silk tube bank to include many branch silk pipes, divide the intraductal steel strand wires (1) that is equipped with of silk, and it has the space to divide between silk pipe and the steel strand wires (1), the end anchor includes a hollow enclosure space, its characterized in that: the end part of the wire dividing pipe is fixedly connected to the end anchor, a steel strand in the wire dividing pipe penetrates through the closed space, a sealing device (7) is arranged in the closed space to fill the whole closed space and surround the steel strand (1), a vent pipe is arranged in the end anchor to be communicated with the outside of the end anchor, and a vent groove is further formed in the end anchor to be communicated with the vent pipe and the wire dividing pipe.

2. The dehumidifying structure of a cable-stayed bridge split-wire pipe cable saddle according to claim 1, wherein: the end anchor comprises an anchor backing plate (2) and a connecting pipe (3) which are connected with each other to form the closed space, the end part of the wire dividing pipe is fixedly connected to the connecting pipe (3), and the vent pipe is communicated to the outside through the anchor backing plate (2).

3. The dehumidifying structure of a cable-stayed bridge split-wire pipe cable saddle according to claim 1, wherein: the breather pipe is provided with a joint for communicating the breather pipe to an external breather pipeline or for sealing the breather pipe.

4. The dehumidifying structure of a cable-stayed bridge branched pipe saddle according to any one of claims 1 to 3, wherein: the end anchor is divided silk tube bank both ends respectively one, and the breather pipe in the end anchor of one end is the intake pipe, and the breather pipe in the end anchor of the other end is the outlet duct, with intake pipe connection's joint be intake pipe structure, with the joint of outlet duct intercommunication is the outlet duct joint, with the air channel of intake pipe intercommunication is first air channel, with the air channel of outlet duct intercommunication is the second air channel.

5. The dehumidifying structure of a cable-stayed bridge branched pipe saddle according to any one of claims 1 to 3, wherein: the cross section of the wire dividing pipe is rhombic or circular, and at least part of the wire dividing pipes are respectively provided with a steel strand.

6. The dehumidifying structure of a cable-stayed bridge branch pipe cable saddle according to any one of claims 4, wherein: the air inlet pipe and the air outlet pipe are at least one group which is correspondingly arranged, or the quantity of the air inlet pipe and the quantity of the air outlet pipe are different.

7. A dehumidifying system comprising the dehumidifying structure of cable-stayed bridge split-wire pipe cable saddle according to any one of claims 1 to 6, wherein: the dehumidifier air supply pipe (18), the dry air supply pipe (13), the dry air branch air supply pipe (12), the wet air branch return pipe (16) and the wet air return pipe (17) are further included, the air outlet end of the dehumidifier (18) is connected to the dry air supply pipe (13), the dry air supply pipe (13) is connected to the dry air branch air supply pipe (12), the dry air branch air supply pipe (12) is connected to an end anchor at one end of the branch filament tube bundle through a connector, a connector on the end anchor at the other end of the branch filament tube bundle is connected to the wet air branch return pipe (16), the wet air branch return pipe (16) is connected to the wet air return pipe (17), and the wet air return pipe is connected to the air inlet end of the dehumidifier (18).

8. The dehumidification system of claim 7, wherein: still include valve control system, valve control system is including locating valve (19) on dry air branch air supply pipe (12) for the switching of control dry air branch air supply pipe (12) interior gas circulation, still includes valve control cabinet (20) and electric control circuit (22), through the operation of valve control cabinet (20), the transmission control of electric control circuit (22), the realization the switching function of valve (19).

9. The dehumidification system of claim 8, wherein: still include temperature detecting system, temperature detecting system includes hygrometer (15), humidity monitoring display cabinet (21) and monitoring data transmission line (23), hygrometer (15) are installed in humid air branch back flow (16), and measured humidity data passes through transmission line (23) and conveys to humidity monitoring display cabinet (21), and when the humidity value of surveying was higher than the setting value temperature monitoring display cabinet (21) will send alarm signal.

10. A dehumidification system as defined in claim 9, wherein: the dry air branch air supply pipe (12) and the wet air branch return pipe (16) are correspondingly provided with a plurality of groups and are respectively connected to end anchors at two ends of the wire splitting tube bundle of the cable saddles, and the valve (19) and the hygrometer (16) also comprise a plurality of groups and are respectively arranged on the dry air branch air supply pipe (12) and the wet air branch return pipe (16) which are different.

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