CN110912067A - High-voltage cable channel - Google Patents
High-voltage cable channel Download PDFInfo
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- CN110912067A CN110912067A CN201911230782.7A CN201911230782A CN110912067A CN 110912067 A CN110912067 A CN 110912067A CN 201911230782 A CN201911230782 A CN 201911230782A CN 110912067 A CN110912067 A CN 110912067A
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- working well
- lifting
- voltage cable
- cable channel
- pipeline
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention relates to the technical field of electric power construction, and discloses a high-voltage cable channel which comprises a lifting pipeline, a first working well, a second working well and at least one connecting pipeline, wherein the first working well and the second working well are connected through the connecting pipeline; the first working well and the second working well comprise a containing cavity formed by enclosing a working well bottom plate and a plurality of working well side walls and a working well cover plate arranged on the containing cavity, and connecting through holes are formed in the side walls connected with the connecting pipeline and the lifting pipeline. The high-voltage cable channel adopting the technical scheme of the invention has the advantages of simple structure, simple construction process, firm structure and convenience for quick laying.
Description
Technical Field
The invention relates to the technical field of electric power construction, in particular to a high-voltage cable channel.
Background
At present, offshore wind power is transmitted to land or a land power grid is transmitted to an offshore drilling oil platform, and the offshore wind power must necessarily pass through a coastal breakwater. The foundation of the coastal breakwater in China is mostly of a riprap structure, namely the foundation of the breakwater is formed by extruding sludge and naturally settling riprap in disorder, the structure and the shape of the riprap are not uniform, and the final settling time of the riprap cannot be determined, namely the riprap can be settled all the time. At present, a horizontal directional drilling process is mostly adopted for flood control of high-voltage cables passing through the coast, the process does not need to excavate the coast breakwater, but the final depth of riprap settlement is uncertain, and a drill bit of the horizontal directional drilling is easy to touch riprap in settlement to cause drilling failure or damage a pipeline when the pipeline is dragged back, so that the risk is extremely high; and the adoption of the horizontal directional drilling process has the disadvantages of overlong construction cost and construction period and is not beneficial to shortening the engineering period, so the technical scheme provided by the invention is used for solving the related problems caused by the penetration of the breakwater.
Disclosure of Invention
The purpose of the invention is: the high-voltage cable channel is simple in structure, simple in construction process and firm in structure, and is convenient to lay quickly.
In order to achieve the purpose, the invention provides a high-voltage cable channel which comprises a lifting pipeline, a first working well, a second working well and at least one connecting pipeline, wherein the first working well and the second working well are connected through the connecting pipeline; the first working well and the second working well comprise a containing cavity formed by enclosing a working well bottom plate and a plurality of working well side walls and a working well cover plate arranged on the containing cavity, and connecting through holes are formed in the side walls connected with the connecting pipeline and the lifting pipeline.
Preferably, the lifting pipe comprises a lifting pipe bottom plate and two lifting pipe side plates, and the lifting pipe bottom plate and the two lifting pipe side plates enclose a holding tank for a cable to pass through.
Preferably, pile foundations are arranged below the first working well, the second working well and the lifting pipeline, one ends of the pile foundations are connected with the first working well, the second working well or the lifting pipeline respectively, and the second ends of the pile foundations are embedded underground.
Preferably, the length of the accommodating cavity ranges from 1000-.
Preferably, the thickness ranges of the working well bottom plate, the working well side plate and the working well cover are all 100-250 mm.
Preferably, the length of the lifting pipeline is 8000-12000 mm, the groove width of the accommodating groove is 500-2500 mm, and the groove depth of the accommodating groove is 500-2500 mm.
Preferably, the thickness ranges of the side plates of the lifting pipe and the bottom plate of the lifting pipe are both 100-250 mm.
Preferably, the connecting pipeline is a metal pipe or a plastic pipe.
Preferably, the outer diameter of the connecting pipe ranges from 200 mm to 520mm, and the wall thickness of the connecting pipe ranges from 10 mm to 30 mm.
Preferably, the diameter range of the pile foundation is 1000-2000 mm, and the length range of the pile foundation is 10000-35000 mm.
Compared with the prior art, the high-voltage cable channel provided by the embodiment of the invention has the beneficial effects that:
according to the high-voltage cable channel provided by the embodiment of the invention, a cable is lifted to a position from a high position to a first and second working wells from sea through the lifting pipeline, and the connection between a submarine cable and a land cable is completed in the first working well through the dam through the connecting pipeline, the first working well and the second working well cross two sides of the dam, and the connecting pipeline is positioned above the dam, so that the drilling in the dam is avoided, the construction process is simplified, the phenomenon that the cable is damaged due to the settlement of the dam is avoided, and the working safety of the cable is further ensured.
Drawings
FIG. 1 is a front view of a high voltage cable channel according to an embodiment of the present invention;
FIG. 2 is an isometric view of a high voltage cable channel according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a work well configuration according to an embodiment of the present invention;
in the figure, 1, a first working well, 11, a working well side plate, 12, a connecting through hole, 13, a working well cover plate, 2, a second working well, 3, a connecting pipeline, 4, a lifting pipeline, 5, a first pile foundation, 6, a second pile foundation, 7, a third pile foundation, 8 and a fourth pile foundation.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the 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.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 1 to 3, a high-voltage cable channel according to a preferred embodiment of the present invention includes a hoisting pipeline 4, a first working well 1, a second working well 2, and at least one connecting pipeline 3, where the first working well 1 and the second working well 2 are connected by the connecting pipeline 3, the number of the connecting pipelines 3 can be adjusted according to the number of cables to be connected, when the number of the required cable groups is one, one connecting pipeline 3 can be provided, when the number of the cable groups to be connected is multiple, the corresponding number of connecting pipelines 3 are provided, one end of the hoisting pipeline 4 is connected to the first working well 1, and the hoisting pipeline 4 forms an included angle with a sea level;
first working well 1 and second working well 2 all include by working well bottom plate and a plurality of working well lateral walls enclose close the chamber that holds that forms and cover and establish working well lid 13 on holding the chamber, ensure from this that the cable in the working well does not receive external destruction, are equipped with connect the via hole 12 on the lateral wall that links to each other with connecting tube 3 and lifting pipe 4. The diameter of the connecting through-hole 12 is equal to the outer diameter of the connecting pipe 3.
Based on above technical scheme, the cable passes through lifting pipe 4 and is promoted high-order to first two work well departments by sea, and pass through dykes and dams through connecting tube 3, accomplish the connection of submarine cable and land cable in first work well 1, first work well 1 and second work well 2 span in dykes and dams both sides, connecting tube 3 is located dykes and dams top, avoided drilling at dykes and dams from this, the construction process has been simplified, avoided dykes and dams settlement to cause the impaired phenomenon of cable to take place simultaneously, further the work safety of cable has been ensured.
Further, lifting pipe 4 includes lifting pipe bottom plate and two lifting pipe curb plates, and lifting pipe bottom plate encloses with two lifting pipe curb plates and closes the holding tank that forms the power cable and walk, and lifting pipe bottom plate is the contained angle setting with the sea level, and the cable of being convenient for from this is promoted the eminence by sea, and the slope setting has avoided direct corner setting to cause the damage to the cable, has improved the life-span of cable.
Preferably, first working well 1, second working well 2 and lifting pipe 4's below all is equipped with the pile foundation, the one end of pile foundation links to each other with first working well 1, second working well 2 or lifting pipe 4 respectively, the second end of pile foundation is pre-buried underground, prevent from this that first working well 1, second working well 2 and lifting pipe 4 from subsiding, the quantity of the pile foundation of lifting pipe 4 below can be adjusted according to the length of lifting pipe 4 when actually laying, can ensure from this that lifting pipe 4 does not take place to subside. In this embodiment, a first pile foundation 5 and a second pile foundation 6 are provided under the hoisting pipe 4, a third pile foundation 7 is provided under the second working well 2, and a fourth pile foundation 8 is provided under the first working well 1, thereby avoiding settlement of the first working well 1, the second working well 2, and the hoisting pipe 4.
The length value range of the accommodating cavity is 1000-3000 mm, and the height value range of the accommodating cavity is 1500-2500 mm, so that the connection of a conversion line is facilitated, meanwhile, enough space is provided for later maintenance, and the maintenance of the cable in the working well by an operator is facilitated.
In this embodiment, the thickness ranges of the working well bottom plate, the working well side plate 11 and the working well cover plate 13 are all 100-250 mm, so that the working well is ensured to have certain strength, the working well is prevented from being damaged, and the service life of the working well is further prolonged.
In addition, the length that promotes pipeline 4 is 8000 supplyes 12000mm, is convenient for the cable to climb in the holding tank from this, and the groove width value range of holding tank is 500 supplyes 2500mm, and the groove depth value range of holding tank is 500 supplyes 2500mm, ensures from this that the cable holds completely in the holding tank, avoids the cable impaired.
Preferably, the thickness ranges of the side plates and the bottom plate of the lifting pipe are both 100-250 mm, so that the lifting pipe 4 is ensured to have certain strength, the lifting pipe 4 is prevented from being damaged, and the service life of the lifting pipe 4 is further prolonged.
Optionally, the connecting pipe 3 is a metal pipe or a plastic pipe. Specifically, the outer diameter range of the connecting pipe is 200-520 mm, and the wall thickness of the connecting pipe is 10-30 mm. Therefore, the connecting pipe is ensured to have certain strength, the damage of the connecting pipe is avoided, and the service life of the connecting pipe is further prolonged.
Preferably, the diameter range of the pile foundation is 1000-2000 mm, and the length range of the pile foundation is 10000-35000 mm. Therefore, the pile foundation is ensured to have certain strength, the pile foundation is prevented from being damaged, and the service life of the pile foundation is further prolonged.
The working process of the invention is as follows: the cable smoothly climbs and goes ashore from the sea-land junction to the second working well 2, and the conversion from the inclined climbing section of the lifting pipeline 4 to the horizontal pipeline section of the connecting pipeline 3 is completed in the second working well 2; the first working well 1 and the second working well 2 are connected through a horizontal connecting pipeline 3 of a dike top road surface to form a dike top horizontal sea cable section; completing the conversion of a submarine cable and a land cable conversion joint in the first working well 1, namely connecting the submarine cable and the land cable; through the connection and the conversion, a high-voltage submarine cable passes through the rapid combination channel of the breakwater, and guarantees are provided for offshore wind power transmission to land or a land power grid to offshore drilling oil platform transmission. Pile foundations are respectively arranged at the bottoms of the working wells, and the pile foundations and the breakwater are stressed independently, so that the pile foundations cannot be settled due to settlement of the breakwater, and settlement of the working wells and the working wells is prevented finally; in the same way, the pile foundation and the breakwater are stressed independently, and finally the settlement of the climbing channel is prevented; the horizontal pipeline of the embankment top pavement is connected with the working well and the working well to form an embankment top horizontal sea cable section; the number of pile foundations required to lift the pipeline 4 is determined according to the height of the climbing slope. Through the arrangement, the phenomenon that the operation safety of the submarine cable is affected due to the fact that the pipeline is not uniformly settled due to the fact that the breakwater is not uniformly settled in the channel is avoided, and compared with a conventional horizontal directional drilling and crossing process, the construction period is saved, the process is safe and reliable, and the construction cost is reduced.
To sum up, the embodiment of the present invention provides a high voltage cable channel, wherein a cable of the high voltage cable channel is lifted from sea to a first working well and a second working well from high position through a lifting pipe 4, and is connected with a submarine cable in a first working well 1 through a dam through a connecting pipe 3, the first working well 1 and the second working well 2 span two sides of the dam, and the connecting pipe 3 is located above the dam, so as to avoid drilling at the bottom of the dam, simplify construction procedures, avoid cable damage caused by dam settlement, and further ensure the working safety of the cable.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A high-voltage cable channel is characterized by comprising a lifting pipeline, a first working well, a second working well and at least one connecting pipeline, wherein the first working well and the second working well are connected through the connecting pipeline;
the first working well and the second working well comprise a containing cavity formed by enclosing a working well bottom plate and a plurality of working well side walls and a working well cover plate arranged on the containing cavity, and connecting through holes are formed in the side walls connected with the connecting pipeline and the lifting pipeline.
2. The high-voltage cable channel of claim 1, wherein the lifting duct comprises a lifting duct bottom plate and two lifting duct side plates, and the lifting duct bottom plate and the two lifting duct side plates enclose a receiving groove for a cable to pass through.
3. The high-voltage cable channel according to claim 1, wherein pile foundations are arranged below the first working well, the second working well and the lifting pipeline, one ends of the pile foundations are connected with the first working well, the second working well or the lifting pipeline respectively, and second ends of the pile foundations are embedded underground.
4. The high-voltage cable channel as claimed in claim 1, wherein the length of the accommodating cavity ranges from 1000-.
5. The high-voltage cable channel as claimed in claim 4, wherein the working well bottom plate, the working well side plate and the working well cover plate have a thickness of 100-250 mm.
6. The high-voltage cable channel as claimed in claim 1, wherein the length of the lifting pipe is 12000mm at 8000-.
7. The high voltage cable channel as claimed in claim 2, wherein the thickness of the side plate of the lifting duct and the bottom plate of the lifting duct are both 100 mm and 250 mm.
8. The high-voltage cable channel according to claim 1, wherein the connecting conduit is a metal or plastic pipe.
9. The high-voltage cable channel as claimed in claim 8, wherein the outer diameter of the connecting tube is in the range of 200-520 mm, and the wall thickness of the connecting tube is 10-30 mm.
10. The high voltage cable channel as claimed in claim 3, wherein the diameter of the pile foundation is in the range of 1000-2000 mm, and the length of the pile foundation is in the range of 10000-35000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230782.7A CN110912067B (en) | 2019-12-04 | 2019-12-04 | High-voltage cable channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911230782.7A CN110912067B (en) | 2019-12-04 | 2019-12-04 | High-voltage cable channel |
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| CN110912067A true CN110912067A (en) | 2020-03-24 |
| CN110912067B CN110912067B (en) | 2021-01-19 |
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Citations (10)
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| US5258572A (en) * | 1990-09-27 | 1993-11-02 | Saito Denki Sangyo Co., Ltd. | Distributing box for underground cables |
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| JP2018100085A (en) * | 2016-12-20 | 2018-06-28 | 古河電気工業株式会社 | On-water overhead power transmission system, installation method for power transmission tower and installation method for on-water overhead power transmission system |
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| CN110912067B (en) | 2021-01-19 |
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Effective date of registration: 20211231 Address after: 510000 No.1 Tianfeng Road, Guangzhou Science City, Huangpu District, Guangzhou City, Guangdong Province Patentee after: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE Co.,Ltd. Patentee after: Guangdong Tian'an Project Management Co., Ltd Address before: 510000 No.1 Tianfeng Road, Guangzhou Science City, Huangpu District, Guangzhou City, Guangdong Province Patentee before: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE Co.,Ltd. |
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