CN114411534A - Cable embedded pipe dehumidification system - Google Patents
Cable embedded pipe dehumidification system Download PDFInfo
- Publication number
- CN114411534A CN114411534A CN202210247231.7A CN202210247231A CN114411534A CN 114411534 A CN114411534 A CN 114411534A CN 202210247231 A CN202210247231 A CN 202210247231A CN 114411534 A CN114411534 A CN 114411534A
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- pipe
- cable embedded
- guy cable
- embedded pipe
- cable
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of bridge engineering, in particular to a guy cable embedded pipe dehumidification system, which comprises a guy cable embedded pipe, guy cables, dehumidification equipment, an air duct and a multiple rainproof sealing cover, wherein the guy cable embedded pipe is arranged in the guy cable embedded pipe; the dehumidification equipment is used for converting humid air into dry air, so that the relative humidity is kept below a numerical value required by corrosion prevention; the air duct is used for connecting the guy cable embedded pipes with each other, conveying wet air in the guy cable embedded pipes to dehumidification equipment and conveying processed dry air back to the guy cable embedded pipes; the multiple rainproof sealing covers are arranged between the cable embedded pipes and the cables and used for preventing rainwater from entering the cable embedded pipes and playing a role in sealing. The relative humidity of the air in the cable embedded pipe is maintained below the limit value of anticorrosion needs through dehumidification operation, accumulated water in the cable embedded pipe is avoided, the cable anticorrosion performance in the cable embedded pipe is improved, the service life of the cable is greatly prolonged, and the safety of a bridge is improved.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a dehumidification system for an inhaul cable embedded pipe.
Background
A large number of cable-supported structural bridges, such as cable-stayed bridges, suspension bridges, tied arch bridges and the like, are built in China, wherein used stay cables, suspenders and the like are required to be connected with main beams, towers or arches and the like, and cable embedded pipes are arranged at the connecting parts. The cable or the jib of many bridges in the use, the corrosion disease has all appeared in cable anchor position department in the cable embedded pipe, has reduced the life of cable or jib, and the brittle failure and lead to the bridge accident of collapsing can take place even for serious, influences bridge safety.
One of the main reasons for corrosion of the guy cable or the suspender is water accumulation or excessive air humidity in the guy cable embedded pipe. Moisture is mainly derived from several aspects:
1. the outer sheath of the stay cable or the suspender is broken or cracked, rainwater permeates into the stay cable through the cracked part and then slowly permeates into the cable embedded pipe;
2. gaps exist between the rain cover of the inhaul cable embedded pipe and the inhaul cable or the sealing protection fails, and rainwater enters the inside of the inhaul cable embedded pipe through the gaps;
3. a gap is formed between the damper arranged in the inhaul cable embedded pipe and the inhaul cable embedded pipe, and rainwater enters the inside of the inhaul cable embedded pipe through the gap;
4. condensed water in the cable embedded pipe;
although the anchor head position of partial stay cable or suspender is filled with protective materials such as butter or anti-corrosive grease, the materials are very volatile and ineffective, and the stay cable still can be corroded.
Disclosure of Invention
The invention aims to provide a dehumidification system for an embedded pipe of a stay cable, which can solve the problem of corrosion of the stay cable in the embedded pipe, thereby prolonging the service life of a stay cable or a suspender and improving the safety of a bridge.
The invention provides a guy cable embedded pipe dehumidification system which comprises a guy cable embedded pipe, guy cables, dehumidification equipment, an air duct and a multiple rainproof sealing cover, wherein the guy cable embedded pipe is arranged on the guy cable embedded pipe;
the dehumidification equipment is used for converting humid air into dry air, so that the relative humidity is kept below a numerical value required by corrosion prevention;
the air duct is used for connecting the guy cable embedded pipes with each other, conveying wet air in the guy cable embedded pipes to dehumidification equipment and conveying processed dry air back to the guy cable embedded pipes;
the multiple rainproof sealing covers are arranged between the cable embedded pipes and the cables and used for preventing rainwater from entering the cable embedded pipes and playing a role in sealing.
Further, the air duct comprises a dry air main pipe, a wet air main pipe, a dry air branch pipe and a wet air branch pipe, wherein one end of the dry air branch pipe is connected to the dry air main pipe, and the other end of the dry air branch pipe is connected to the inhaul cable embedded pipe; one end of the wet air branch pipe is connected to the dry air main pipe, the other end of the wet air branch pipe is connected to the inhaul cable embedded pipes, and each inhaul cable embedded pipe is connected to the dry air main pipe and the wet air main pipe.
Furthermore, the multiple rainproof sealing cover comprises an umbrella-shaped rainproof cover and a sealing cover, one end of the umbrella-shaped rainproof cover is fixed on the inhaul cable, the other end of the umbrella-shaped rainproof cover is free, and the umbrella-shaped rainproof cover cannot be stressed under the condition that the inhaul cable vibrates, so that looseness is avoided; one end of the sealing cover is fixed on the inhaul cable, the other end of the sealing cover is fixed on the inhaul cable embedded pipe, the inside and the outside of the inhaul cable embedded pipe are sealed and isolated, the air in the inhaul cable embedded pipe is prevented from overflowing outwards, the outside air is prevented from entering the inside of the inhaul cable embedded pipe, and the relative humidity of the air in the inhaul cable embedded pipe is kept at the level of anticorrosion requirements.
Furthermore, the multiple rain-proof sealing cover further comprises fixing ribs, and the fixing ribs are respectively positioned on the stay cable and the stay cable embedded pipe to play a role in fixing the umbrella-shaped rain-proof cover and the sealing cover.
Furthermore, the fixed end of the umbrella-shaped rain cover is connected with the sheath of the inhaul cable to form a seamless integral structure, so that rainwater is prevented from permeating between the umbrella-shaped rain cover and the inhaul cable.
Furthermore, the fixed end of the umbrella-shaped rain cover is made of the same material as the sheath of the inhaul cable and is welded with the sheath of the inhaul cable.
Furthermore, the sealing cover is provided with an air vent, the air vent is provided with an air vent pipeline connecting part, and the air vent pipeline connecting part is respectively connected with the dry air branch pipe and the wet air branch pipe.
Furthermore, the sealing cover and the inside of the junction of the cable embedded pipe are provided with a ventilation damping body, and the ventilation damping body is provided with a ventilation hole, so that the requirement of cable damping can be met, and an air circulation pipeline in the cable embedded pipe can be formed. The ventilation shock absorber can be selectively arranged according to the condition of an air channel in the inhaul cable embedded pipe.
Furthermore, the seal cover is provided with an inspection hole for measuring the humidity in the guy cable embedded pipe, and the inspection hole is in a closed state at ordinary times.
Furthermore, an auxiliary ventilation device is arranged on the ventilation pipeline to increase the circulation speed of the gas.
Has the advantages that:
the invention is suitable for the corrosion prevention of the guy cable in the guy cable embedded pipe of a guy cable bearing structure such as a cable-stayed bridge, an arch bridge, a suspension bridge and the like. The invention has wide application, and can be installed on the built bridge or a newly-built bridge. The circulation between the inside of the cable embedded pipe and the ambient atmosphere has been completely cut off to multiple rain-proof sealed cowling, make moist air can not enter into the embedded steel pipe of cable inside, the vent pipe of intercommunication each other is connected the cable embedded pipe with dehumidification equipment, and maintain the air relative humidity in the cable embedded pipe under the limit value of anticorrosive needs through dehumidification operation, avoid the ponding in the cable embedded pipe, thereby improve the cable corrosion protection performance in the cable embedded pipe, prolong the life of cable by a wide margin, increase the security of bridge.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a general layout of a guy cable embedded pipe dehumidification system of the present invention;
FIG. 2 is a general view of a multiple rainproof sealing cover of the guy buried pipe dehumidification system of the invention;
FIG. 3 is a schematic view of the ventilation damper of the guy cable embedded pipe dehumidification system of the present invention.
Description of reference numerals: 1-dehumidification equipment, 2-an air duct, 21-a dry air main duct, 22-a wet air main duct, 23-a dry air branch duct, 24-a wet air branch duct, 3-a multi-rainproof sealing cover, 31-an umbrella-shaped rainproof cover, 32-a sealing cover, 321-an air vent, 322-an air duct connecting part, 33-a welding body, 34-a cable fixing rib, 35-a cable embedded duct fixing rib, 4-an air vent shock absorber, 41-an air vent, 42-a cable preformed hole, 5-a cable, 6-a cable embedded duct, 7-an anchor backing plate and 8-a cable anchor head.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The utility model provides a pre-buried tub dehumidification system of cable specifically includes:
the dehumidification equipment 1 converts the humid air into dry air, so that the relative humidity is kept below the numerical value of the anticorrosion requirement, and the anticorrosion requirement is met.
And the air duct 2 is connected between the inhaul cable embedded pipes 6, and is used for conveying the humid air in the inhaul cable embedded pipes 6 to the dehumidifier 1 and conveying the treated dry air to the inhaul cable embedded pipes 6. The air duct 2 includes a main dry air duct 21, a main wet air duct 22, a branch dry air duct 23, and a branch wet air duct 24. One end of the branch pipe is connected to the main pipe, the other end of the branch pipe is connected to the inhaul cable embedded pipes 6, and the inhaul cable embedded pipes 6 are connected in series or in parallel to the main pipe.
The multiple rainproof sealing cover 3 comprises a stay cable fixing rib 34, a stay cable embedded pipe fixing rib 35, an umbrella-shaped rainproof cover 31 and a sealing cover 32, which jointly form a multiple rainproof sealing system. The stay cable fixing rib 34 and the stay cable embedded pipe fixing rib 35 are respectively positioned on the stay cable 5 and the stay cable embedded pipe 6, and play a role in fixing the umbrella-shaped rain cover 31 and the sealing cover 32.
One end of the umbrella-shaped rain cover 31 is fixed on the inhaul cable 5, and the other end is free, so that the inhaul cable 5 cannot be stressed under the vibration condition, and the looseness is avoided. The fixed end of the umbrella-shaped rain cover 31 is made of the same material as the sheath of the inhaul cable 5 and is welded with the sheath of the inhaul cable 5 to form a seamless integral structure, and rainwater is prevented from permeating between the umbrella-shaped rain cover and the inhaul cable.
On sealed cowling 32 one end was fixed to cable 5, one end was fixed to cable embedded pipe 6, and with cable embedded pipe 6 inside and outside sealed isolated, guarantee that the air in cable embedded pipe 6 is not excessive to the outside and is scattered, also guarantee outside air and do not get into inside cable embedded pipe 6, make the relative humidity of the air in cable embedded pipe 6 keep at anticorrosive required level. The sealing cover 32 is provided with a vent hole 321, and a vent pipe connecting member 322 is provided around the vent hole 321 to be connected to the dry air branch pipe 23 or the humid air branch pipe 24. If necessary, an inspection hole can be arranged for measuring the humidity in the cable embedded pipe 6, and the inspection hole is in a closed state at ordinary times.
The ventilation damping body 4 is provided with a stay cable preformed hole 42 on the ventilation damping body 4, and meanwhile, the ventilation holes 41 are formed in the ventilation damping body 4 in the stay cable embedded pipe 6, so that the requirement of the stay cable 5 for damping can be met, and an air circulation pipeline in the stay cable embedded pipe 6 can be formed. The ventilating and damping body 4 can be selectively arranged according to the air channel condition in the cable embedded pipe 6.
The invention is suitable for the corrosion prevention of the guy cable in the guy cable embedded pipe of a guy cable bearing structure such as a cable-stayed bridge, an arch bridge, a suspension bridge and the like. The invention has wide application, and can be installed on the built bridge or a newly-built bridge. Adopt multiple rain-proof sealed structure, can more effectually avoid rainwater infiltration cable embedded pipe in. One end of the umbrella-shaped rain cover is fixed, and the other end of the umbrella-shaped rain cover is free, so that the looseness of the fixed position of the rain cover caused by the vibration of the stay cable is avoided, in addition, the fixed end is welded into a whole by adopting the material the same as that of the stay cable sheath, the water seepage channel between the surface of the stay cable and the rain cover is thoroughly sealed, and the rainwater is guided out of the connecting part of the sealing cover and the stay cable through the umbrella-shaped structure; the sealed cowling has completely cut off the circulation between the pre-buried intraduct of cable and the ambient atmosphere, makes moist air can not enter into the pre-buried intraduct of cable. The pipeline of establishing ties or parallelly connected is connected cable embedded pipe and dehumidification equipment to through the dehumidification operation with the air relative humidity in the cable embedded pipe maintain under the limit value of anticorrosive needs, avoid the ponding in the cable embedded pipe, thereby improve the cable corrosion protection performance in the cable embedded pipe, prolong the life of cable by a wide margin, increase the security of bridge.
The working and using processes are as follows:
a dehumidification system for an inhaul cable embedded pipe comprises the following concrete implementation steps:
firstly, fixing a guy cable 5 at the bottom of a guy cable pre-buried pipe 6 through an anchor backing plate 7 and a guy cable anchor head 8, installing a ventilation damping body 4, and if the guy cable is a built bridge, replacing the ventilation damping body 4.
And step two, installing a cable fixing rib 34 on the cable 5, and installing a cable embedded pipe fixing rib 35 on the cable embedded pipe 6.
And step three, installing the sealing cover 3.
And step four, installing an umbrella-shaped rain cover 31, and welding the umbrella-shaped rain cover 31 and the inhaul cable 5 to complete the installation of the welding body 33.
And step five, laying the dry air main pipe 21 and the wet air main pipe 22, and then connecting one ends of the dry air branch pipe 23 and the wet air branch pipe 24 to the ventilation pipeline connecting part 322 of the sealing cover 3, and connecting the other ends of the dry air branch pipe 21 and the wet air main pipe 22.
And step six, installing the dehumidification equipment 1.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A guy cable embedded pipe dehumidification system is characterized by comprising a guy cable embedded pipe, a guy cable, dehumidification equipment, an air duct and a multiple rainproof sealing cover;
the dehumidification equipment is used for converting humid air into dry air, so that the relative humidity is kept below a numerical value required by corrosion prevention;
the air duct is used for connecting the guy cable embedded pipes with each other, conveying wet air in the guy cable embedded pipes to dehumidification equipment and conveying processed dry air back to the guy cable embedded pipes;
the multiple rainproof sealing covers are arranged between the cable embedded pipes and the cables and used for preventing rainwater from entering the cable embedded pipes and playing a role in sealing.
2. The guy cable embedded pipe dehumidification system according to claim 1, wherein the vent pipe comprises a dry air main pipe, a wet air main pipe, a dry air branch pipe and a wet air branch pipe, wherein one end of the dry air branch pipe is connected to the dry air main pipe, and the other end of the dry air branch pipe is connected to the guy cable embedded pipe; one end of the wet air branch pipe is connected to the dry air main pipe, the other end of the wet air branch pipe is connected to the inhaul cable embedded pipes, and each inhaul cable embedded pipe is connected to the dry air main pipe and the wet air main pipe.
3. The guy cable embedded pipe dehumidification system as claimed in claim 2, wherein the multiple rain-proof sealing covers comprise an umbrella-shaped rain-proof cover and a sealing cover, one end of the umbrella-shaped rain-proof cover is fixed on the guy cable, and the other end of the umbrella-shaped rain-proof cover is free; one end of the sealing cover is fixed on the inhaul cable, and the other end of the sealing cover is fixed on the inhaul cable embedded pipe.
4. The guy cable embedded pipe dehumidification system as claimed in claim 3, wherein the multiple rainproof sealing covers further comprise fixing ribs, and the fixing ribs are respectively located on the guy cable and the guy cable embedded pipe to play a role in fixing the umbrella-shaped rainproof covers and the sealing covers.
5. The guy cable embedded pipe dehumidification system as claimed in claim 3, wherein a fixed end of the umbrella-shaped rain cover is connected with a sheath of the guy cable to form a seamless integral structure, so as to prevent rainwater from penetrating between the umbrella-shaped rain cover and the guy cable.
6. The guy cable embedded pipe dehumidification system as claimed in claim 5, wherein a fixed end of the umbrella-shaped rain shield is made of the same material as a sheath of the guy cable and is welded with the sheath of the guy cable.
7. The guy cable embedded pipe dehumidification system as claimed in claim 3, wherein the sealing cover is provided with vent holes, and the vent holes are provided with vent pipe connecting parts respectively connected with the dry air branch pipe and the wet air branch pipe.
8. The guy cable embedded pipe dehumidification system as claimed in claim 3, wherein a ventilation and shock absorption body is arranged inside a joint of the sealing cover and the guy cable embedded pipe, and ventilation holes are formed in the ventilation and shock absorption body.
9. The guy cable embedded pipe dehumidification system according to claim 8, wherein an inspection hole is formed in the sealing cover.
10. The guy cable embedded pipe dehumidification system as claimed in claim 1, wherein an auxiliary ventilation device is further arranged on the ventilation pipeline to increase the circulation speed of gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210247231.7A CN114411534A (en) | 2022-03-14 | 2022-03-14 | Cable embedded pipe dehumidification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210247231.7A CN114411534A (en) | 2022-03-14 | 2022-03-14 | Cable embedded pipe dehumidification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114411534A true CN114411534A (en) | 2022-04-29 |
Family
ID=81264399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210247231.7A Pending CN114411534A (en) | 2022-03-14 | 2022-03-14 | Cable embedded pipe dehumidification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114411534A (en) |
-
2022
- 2022-03-14 CN CN202210247231.7A patent/CN114411534A/en active Pending
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