CN117559276A - Combined electrical apparatus for offshore wind power - Google Patents
Combined electrical apparatus for offshore wind power Download PDFInfo
- Publication number
- CN117559276A CN117559276A CN202311503682.3A CN202311503682A CN117559276A CN 117559276 A CN117559276 A CN 117559276A CN 202311503682 A CN202311503682 A CN 202311503682A CN 117559276 A CN117559276 A CN 117559276A
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- Prior art keywords
- outgoing line
- mounting cavity
- sleeve
- plug
- wind power
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- 238000000429 assembly Methods 0.000 claims description 20
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- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
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- 238000007747 plating Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 26
- 239000011248 coating agent Substances 0.000 description 6
- 239000012212 insulator Substances 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
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- 229910052725 zinc Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- DQIPXGFHRRCVHY-UHFFFAOYSA-N chromium zinc Chemical compound [Cr].[Zn] DQIPXGFHRRCVHY-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/202—Cable lay-outs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/005—Electrical connection between switchgear cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/045—Details of casing, e.g. gas tightness
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a combined electrical appliance for offshore wind power, wherein a vacuum circuit breaker, a first isolating switch and a first insulation outgoing line assembly are arranged in an upper box body, the first insulation outgoing line assembly comprises a first outgoing line sleeve and a first plug-in type cable head, one end of the first outgoing line sleeve is electrically connected with the vacuum circuit breaker, and the first plug-in type cable head can be mutually plugged with the other end of the first outgoing line sleeve. The lower box body is internally provided with a second isolating switch and a second insulating outgoing line assembly, the second insulating outgoing line assembly comprises a second outgoing line sleeve and a second plug-in type cable head, one end of the second outgoing line sleeve is electrically connected with the front outgoing line end of the second isolating switch, and the second plug-in type cable head is arranged outside the lower box body and can be mutually plugged with the other end of the second outgoing line sleeve. The insulation distance of the electrical appliance needed by the plug-in cable head is smaller, so that the volume of the whole combined electrical appliance can be reduced, and the combined electrical appliance can be conveniently installed in the fan tower.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a combined electrical appliance for offshore wind power.
Background
The combined electrical appliance for offshore wind power is usually arranged in a wind power generation tower, and the combined electrical appliance needs to have better protective performance in order to adapt to the running environment with high salt mist and high humidity of the ocean.
The existing combined electrical apparatus generally adopts an insulator type wire outlet mode, namely, the insulator is connected with an external cable, however, the insulator is large in size, the insulation distance of the required electrical apparatus is large, the wire outlet mode requires a large space to meet insulation requirements, the combined electrical apparatus is large in size, the offshore wind turbine tower is small in size, the installation space of the combined electrical apparatus is greatly limited, and in addition, the insulator is generally required to be installed through fasteners such as a plurality of bolts, so that the installation is complex and inconvenient.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the offshore wind power combined electrical appliance, which adopts the plug-in cable head, has a good insulation effect, requires a small installation space and can reduce the volume of the combined electrical appliance.
According to an embodiment of the invention, a combined electrical apparatus for offshore wind power comprises: the upper box body is provided with an upper mounting cavity, a vacuum circuit breaker, a first isolating switch and a first insulation wire outlet assembly are arranged in the upper mounting cavity, the rear wire outlet end of the vacuum circuit breaker is electrically connected with the front wire outlet end of the first isolating switch, the first insulation wire outlet assembly comprises a first wire outlet sleeve and a first plug-in type cable head, the first wire outlet sleeve is arranged in the upper mounting cavity, one end of the first wire outlet sleeve is electrically connected with the vacuum circuit breaker, and the first plug-in type cable head is arranged outside the upper box body and can be mutually plugged with the other end of the first wire outlet sleeve; the lower box body is provided with a lower mounting cavity communicated with the upper mounting cavity, two groups of switch assemblies are mounted in the lower mounting cavity, each group of switch assemblies comprises a second isolating switch and a second insulating outgoing line assembly, the rear outgoing line ends of the two second isolating switches are electrically connected with the rear outgoing line ends of the first isolating switches, in each group of switch assemblies, each second insulating outgoing line assembly comprises a second outgoing line sleeve and a second plug-in type cable head, the second outgoing line sleeve is mounted in the lower mounting cavity, one end of each second outgoing line sleeve is electrically connected with the front outgoing line end of each second isolating switch, and each second plug-in type cable head is mounted outside the lower box body and can be mutually plugged with the other end of each second outgoing line sleeve.
The offshore wind power combined electrical appliance provided by the embodiment of the invention has at least the following beneficial effects:
through adopting first insulating subassembly and the second of being qualified for next round of competitions of being insulating, vacuum circuit breaker goes out the line through first insulating subassembly of being qualified for next round of competitions, and two second isolator go out the line through the second insulating subassembly of being qualified for next round of competitions, and first insulating subassembly and the second of being qualified for next round of competitions of being insulating all including wire sleeve and plug-in cable head, plug-in cable head is compared in traditional insulator, and required electrical apparatus insulating distance is less, therefore required installation space is also less for the structure in upper mounting chamber and the lower mounting chamber is compacter, thereby can reduce whole combined electrical apparatus's volume, in being convenient for install combined electrical apparatus to fan tower section of thick bamboo.
According to some embodiments of the invention, the cable assembly further comprises a first cable chamber, a second cable chamber, and a third cable chamber, wherein the first cable chamber, the second cable chamber, and the third cable chamber are all metal compartments; the vacuum circuit breaker is positioned at the left side of the first isolating switch, the first cable chamber is arranged at the left side of the upper box body, and the outer end of the first wire outlet sleeve and the first plug-in cable head are positioned in the first cable chamber; the two groups of switch assemblies are symmetrically arranged along the left-right direction, the second cable chamber is arranged on the left side of the lower box body, the third cable chamber is arranged on the right side of the lower box body, the outer end of the second wire outlet sleeve of the switch assembly and the second plug-in cable head which are positioned on the left side are both positioned in the second cable chamber, and the outer end of the second wire outlet sleeve of the switch assembly and the second plug-in cable head which are positioned on the right side are both positioned in the third cable chamber.
According to some embodiments of the invention, the upper case has an upper opening communicating with the upper mounting chamber, the lower case has a lower opening communicating with the lower mounting chamber, and a periphery of the upper opening and a periphery of the lower opening are abutted against each other and detachably connected by a third fastener.
According to some embodiments of the invention, the upper and lower mounting cavities are filled with an environmental gas.
According to some embodiments of the invention, a seal is sandwiched between the perimeter of the upper opening and the perimeter of the lower opening.
According to some embodiments of the invention, the rear outlet end of the first isolating switch is connected with a first conductive sheet, the rear outlet ends of the two second isolating switches are connected with second conductive sheets, the two second conductive sheets are contacted, and the first conductive sheet extends to the lower mounting cavity through the upper opening and the lower opening and is contacted with one of the second conductive sheets.
According to some embodiments of the invention, at least one group of supporting members is further arranged between the upper case and the lower case, one end of each supporting member is connected to the outer side wall of the upper case, and the other end of each supporting member is connected to the outer side wall of the lower case.
According to some embodiments of the invention, the upper and lower cases are each cylindrical cans arranged in a horizontal direction.
According to some embodiments of the invention, the first outlet sleeve is mounted in the upper mounting cavity and extends to the outside of the upper mounting cavity, the periphery of the first outlet sleeve is provided with a first abutting part positioned outside the upper mounting cavity, the periphery of the first outlet sleeve is also sleeved with a first extruding part, and the first extruding part abuts against the outer side surface of the first abutting part and is mounted on the outer side wall of the upper box body through a first fastener; in each group of switch assemblies, the second outlet sleeve is mounted in the lower mounting cavity and extends to the outside of the lower mounting cavity, the periphery of the second outlet sleeve is provided with a second abutting portion positioned outside the lower mounting cavity, the periphery of the second outlet sleeve is further sleeved with a second extrusion portion, and the second extrusion portion abuts against the outer side face of the second abutting portion and is mounted on the outer side wall of the lower box body through a second fastener.
According to some embodiments of the invention, the outer surfaces of the vacuum circuit breaker, the first isolating switch and the two second isolating switches are provided with zinc-nickel plating layers;
the outer surfaces of all the first fastening piece, the second fastening piece and the third fastening piece are provided with Dacromet coatings.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a combined electrical apparatus for offshore wind power according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a marine wind power combiner according to an embodiment of the present invention;
FIG. 3 is an internal structure diagram of a combined electrical appliance for offshore wind power, according to an embodiment of the invention;
FIG. 4 is a front view showing the internal structure of the offshore wind power combiner according to the embodiment of the invention in FIG. 3;
FIG. 5 is a schematic diagram of an insulated wire outlet assembly according to an embodiment of the invention;
FIG. 6 is a schematic cross-sectional view of the first insulated wire assembly of FIG. 5;
FIG. 7 is a schematic view of the first outlet sleeve of FIG. 5;
fig. 8 is a schematic view of the first pluggable cable head of fig. 5.
Reference numerals:
an upper case 100, an upper installation cavity 110, an upper opening 120, a first cable chamber 130,
Lower case 200, lower mounting chamber 210, lower opening 220, support 230, second cable chamber 240, third cable chamber 250;
a vacuum circuit breaker 300, a first isolating switch 310, a second isolating switch 320;
the cable assembly comprises a first insulation outgoing line assembly 400, a first outgoing line sleeve 401, a first plug-in type cable head 402, a first lightning arrester 403, a first abutting portion 404, a first extruding portion 405, a second insulation outgoing line assembly 410, a second outgoing line sleeve 411, a second plug-in type cable head 412, a second lightning arrester 413, a second abutting portion 414, a second extruding portion 415, a first conical surface 420, a first conical groove 430, a first conductive sheet 440, a second conductive sheet 441 and a conductive body 450.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 4, an embodiment of the present invention provides a combined electrical apparatus for offshore wind power, which includes an upper case 100 and a lower case 200. The upper box body 100 is provided with an upper mounting cavity 110, a vacuum circuit breaker 300, a first isolating switch 310 and a first insulation wire outlet assembly 400 are mounted in the upper mounting cavity 110, a rear wire outlet end of the vacuum circuit breaker 300 is electrically connected with a front wire outlet end of the first isolating switch 310, the first insulation wire outlet assembly 400 comprises a first wire outlet sleeve 401 and a first plug-in type cable head 402, the first wire outlet sleeve 401 is mounted in the upper mounting cavity 110, one end of the first wire outlet sleeve 401 is electrically connected with the vacuum circuit breaker 300, and the first plug-in type cable head 402 is mounted outside the upper box body 100 and can be mutually plugged with the other end of the first wire outlet sleeve 401. The lower case 200 has a lower installation cavity 210 communicated with the upper installation cavity 110, two groups of switch assemblies are installed in the lower installation cavity 210, each group of switch assemblies comprises a second isolating switch 320 and a second insulating wire outlet assembly 410, the rear wire outlet ends of the two second isolating switches 320 are electrically connected with the rear wire outlet ends of the first isolating switch 310, in each group of switch assemblies, the second insulating wire outlet assembly 410 comprises a second wire outlet sleeve 411 and a second plug-in type cable head 412, the second wire outlet sleeve 411 is installed in the lower installation cavity 210, one end of the second wire outlet sleeve 411 is electrically connected with the front wire outlet end of the second isolating switch 320, and the second plug-in type cable head 412 is installed outside the lower case 200 and can be mutually plugged with the other end of the second wire outlet sleeve 411.
In the above structure, by providing the first insulation wire outlet assembly 400 and the second insulation wire outlet assembly 410, the vacuum circuit breaker 300 in the upper installation cavity 110 is wire-outlet through the first insulation wire outlet assembly 400, thereby realizing connection with the external fan; the two second isolating switches 320 in the lower installation cavity 210 are then wired out through the second insulated wire outlet assembly 410, so as to be connected with an external submarine cable. The first insulation outgoing line assembly 400 includes a first outgoing line sleeve 401 and a first plug-in cable head 402 that are plugged with each other, the second insulation outgoing line assembly 410 includes a second outgoing line sleeve 411 and a second plug-in cable head 412 that are plugged with each other, that is, the first insulation outgoing line assembly 400 and the second insulation outgoing line assembly 410 include an outgoing line sleeve and a plug-in cable head, and compared with a traditional insulator, the plug-in cable head has smaller electrical insulation distance, so that the required installation space is smaller, the structures in the upper installation cavity 110 and the lower installation cavity 210 are more compact, thereby reducing the volume of the whole combined electrical apparatus and facilitating the installation of the combined electrical apparatus into the fan tower.
Secondly, the plug-in type cable head has a good insulation effect, and can protect the cable, so that the cable can adapt to the external high-salt-fog and high-humidity operation environment. In addition, the first outlet sleeve 401 and the first plug-in cable head 402, and the second outlet sleeve 411 and the second plug-in cable head 412 are connected in a mutually plugging manner, so that the assembly and the disassembly are convenient, and the maintenance and the replacement of an external cable can be facilitated.
As can be appreciated, in fig. 1 to 4, the upper mounting cavity 110 and the lower mounting cavity 210 each adopt a three-phase structure, specifically, in the upper mounting cavity 110, each phase includes a vacuum circuit breaker 300, a first disconnecting switch 310 and a first insulation wire outlet assembly 400, a rear wire outlet end of the vacuum circuit breaker 300 is electrically connected with a front wire outlet end of the first disconnecting switch 310, the first insulation wire outlet assembly 400 includes a first wire outlet sleeve 401 and a first plug-in cable head 402, the first wire outlet sleeve 401 is mounted in the upper mounting cavity 110, one end of a second wire outlet sleeve 411 is electrically connected with the vacuum circuit breaker 300, and the first plug-in cable head 402 is mounted outside the upper box 100 and can be plugged with the other end of the first wire outlet sleeve 401. In the lower installation cavity 210, each phase includes two groups of switch assemblies, each group of switch assemblies includes a second isolating switch 320 and a second insulating outlet assembly 410, the rear outlet ends of the two second isolating switches 320 are electrically connected with the rear outlet ends of the first isolating switch 310, in each group of switch assemblies, the second insulating outlet assembly 410 includes a second outlet sleeve 411 and a second plug-in cable head 412, the second outlet sleeve 411 is installed in the lower installation cavity 210, one end of the second outlet sleeve 411 is electrically connected with the front outlet end of the second isolating switch 320, and the second plug-in cable head 412 is installed outside the lower box 200 and can be plugged with the other end of the second outlet sleeve 411.
As can be appreciated, referring to fig. 1 to 4, the rear outlet of the vacuum circuit breaker 300 is electrically connected to the front outlet of the first isolating switch 310, and more particularly, the rear outlet of the vacuum circuit breaker 300 is electrically connected to the front outlet of the first isolating switch 310 through the conductor 450.
Referring to fig. 1 to 8, in some embodiments, a first outlet sleeve 401 is mounted in the upper mounting cavity 110 and extends to the outside of the upper mounting cavity 110, an outer peripheral wall of the first outlet sleeve 401 located outside of the upper mounting cavity 110 is a first tapered surface 420, the first plug-in cable head 402 has a first tapered groove 430 adapted to the first tapered surface 420, and an outer end of the first outlet sleeve 401 is plugged into the first tapered groove 430 and is in interference fit with an inner peripheral wall of the first tapered groove 430.
In the above structure, the first outlet sleeve 401 extends to the outside of the upper mounting cavity 110 to be plugged with the first plug-in cable head 402, so that the plug-in of the first plug-in cable head 402 is more convenient and quick. Through setting up first conical surface 420 at the outer peripheral wall that first outlet sleeve 401 is located the outside of upper mounting chamber 110 to set up the first conical groove 430 with first conical surface 420 looks adaptation at first plug-in cable head 402, make the outer end of first outlet sleeve 401 can peg graft in first conical groove 430 and make first conical surface 420 and the inner peripheral wall interference fit of first conical groove 430, thereby make the grafting between first outlet sleeve 401 and the first plug-in cable head 402 inseparabler firm, improved the connection stability between the two. In addition, the first taper surface 420 and the first taper groove 430 may facilitate the insertion between the first plug-in cable head 402 and the first outlet sleeve 401.
Referring to fig. 1 to 8, in some embodiments, in each group of switch assemblies, a second outlet sleeve 411 is mounted in the lower mounting cavity 210 and extends to the outside of the lower mounting cavity 210, the outer peripheral wall of the second outlet sleeve 411 located outside the lower mounting cavity 210 is a second conical surface, the second plug-in cable head 412 has a second conical groove adapted to the second conical surface, and the outer end of the second outlet sleeve 411 is plugged into the second conical groove and is in interference fit with the inner peripheral wall of the second conical groove.
In the above structure, the second outlet sleeve 411 extends to the outside of the lower mounting cavity 210 to be plugged with the second plug-in cable head 412, so that the second plug-in cable head 412 is plugged more conveniently and rapidly. Through setting up the second conical surface at the outer peripheral wall that second wire outlet sleeve 411 is located the outside of lower installation cavity 210 to set up the second conical groove with second conical surface looks adaptation at second plug-in cable head 412, make the outer end of second wire outlet sleeve 411 can peg graft in the second conical inslot and make second conical surface and the inner peripheral wall interference fit in second conical inslot, make the grafting between second wire outlet sleeve 411 and the second plug-in cable head 412 inseparabler firm from this, improved the connection stability between the two. In addition, the second taper surface and the second taper groove can facilitate the insertion between the second plug-in cable head 412 and the second outlet sleeve 411.
Referring to fig. 1-8, in some embodiments, a first outlet sleeve 401 plugs into the front side of a first plug-in cable head 402, and a first lightning arrester 403 plugs into the rear side of the first plug-in cable head 402.
In the above structure, the arrangement of the first lightning arrester 403 can provide reliable over-current protection, and effectively protect the use safety of the combined electrical apparatus.
Referring to fig. 1 to 8, in some embodiments, in each set of the switch assemblies, a second outlet sleeve 411 is plugged onto the front side of a second plug-in cable head 412, and a second lightning arrester 413 is plugged onto the rear side of the second plug-in cable head 412.
In the above structure, the arrangement of the second lightning arrester 413 can provide reliable over-current protection, and effectively protect the use safety of the combined electrical apparatus.
Referring to fig. 1 to 4, in some embodiments, the combined apparatus further includes a first cable chamber 130, a second cable chamber 240, and a third cable chamber 250, and the first cable chamber 130, the second cable chamber 240, and the third cable chamber 250 are all metal compartments. The vacuum circuit breaker 300 is located at the left side of the first disconnecting switch 310, the first cable chamber 130 is located at the left side of the upper case 100, and the outer end of the first outlet sleeve 401 and the first plug-in cable head 402 are located in the first cable chamber 130. The two groups of switch assemblies are symmetrically arranged along the left-right direction, the second cable chamber 240 is arranged on the left side of the lower box body 200, the third cable chamber 250 is arranged on the right side of the lower box body 200, the outer end of the second outlet sleeve 411 of the switch assembly positioned on the left side and the second plug-in cable head 412 are both positioned in the second cable chamber 240, and the outer end of the second outlet sleeve 411 of the switch assembly positioned on the right side and the second plug-in cable head 412 are both positioned in the third cable chamber 250.
In the above structure, the vacuum circuit breaker 300 and the first isolating switch 310 are disposed in the upper mounting cavity 110 in the left-right direction, and the two second isolating switches 320 are symmetrically disposed in the lower mounting cavity 210 in the left-right direction, so that the structure of the interior of the combined electrical apparatus is simple and clear in the layout manner, and the combined electrical apparatus is convenient to install and maintain, so that the interior structure of the combined electrical apparatus is more compact, the size of the combined electrical apparatus can be controlled conveniently, the volume of the whole combined electrical apparatus is reduced, and the combined electrical apparatus can be installed in the fan tower conveniently. The first cable chamber 130, the second cable chamber 240 and the third cable chamber 250 are all metal compartments, which can facilitate the protection of cables, so that the combined electrical apparatus has higher IP grade and anti-arcing function;
referring to fig. 1 to 4, in some embodiments, the upper case 100 has an upper opening 120 communicating with the upper mounting cavity 110, the lower case 200 has a lower opening 220 communicating with the lower mounting cavity 210, and the periphery of the upper opening 120 and the periphery of the lower opening 220 abut each other and are detachably connected by a third fastener.
In the above-mentioned structure, the setting of upper opening 120 and lower opening 220 can be convenient for with last installation cavity 110 and lower installation cavity 210 intercommunication each other, in addition, with the mutual butt of the periphery of upper opening 120 and lower opening 220 and through the connection can be dismantled to the third fastener for can dismantle between upper box 100 and the lower box 200, can make things convenient for business turn over tower section of thick bamboo door fortune dimension from this, can be convenient for install whole composite apparatus to inside the fan tower section of thick bamboo, this structure can also be convenient for simultaneously install upper box 100 and lower box 200 stable connection together, improved whole composite apparatus's structural stability.
In addition, the upper case 100 and the lower case 200 of the conventional combined electrical apparatus are generally independent of each other, for example, the combined electrical apparatus for offshore wind power of 72.5kV, the upper mounting chamber 110 and the lower mounting chamber 210 are separated from each other, and the first isolating switch 310 in the upper mounting chamber 110 is electrically connected with the second isolating switch 320 in the lower mounting chamber 210 by providing a connection terminal set between the upper case 100 and the lower case 200, which results in a large volume of the entire combined electrical apparatus, which is inconvenient to install the combined electrical apparatus inside the fan tower. In the embodiment of the present invention, the arrangement of the upper opening 120 and the lower opening 220 can facilitate the mutual communication between the upper installation cavity 110 and the lower installation cavity 210, which is equivalent to installing all components inside one cavity, eliminating the middle connection end group, further reducing the volume of the whole combined electrical apparatus, and facilitating the installation of the combined electrical apparatus into the fan tower.
It will be appreciated that the third fastener may be a bolt fastener or a screw fastener, and in addition, a fastening structure may be used, which is not particularly limited to the present invention.
In some embodiments, both the upper mounting cavity 110 and the lower mounting cavity 210 are filled with an environmentally friendly gas.
In the above structure, the upper mounting cavity 110 and the lower mounting cavity 210 are both closed cavities, and the cavities are filled with environment-friendly gas, and the environment-friendly gas is used as a main insulating medium, so that toxic and harmful substances are not generated in the insulating process, and the insulating process is environment-friendly and not easy to influence the environment.
It is understood that the upper and lower mounting chambers 110 and 210 are filled with an environment-friendly gas, and in particular, the upper and lower mounting chambers 110 and 210 may be filled with dry air of 4atm to 6 atm.
In some embodiments, a seal is also sandwiched between the perimeter of the upper opening 120 and the perimeter of the lower opening 220.
In the above structure, the provision of the sealing member can improve the connection sealability between the upper case 100 and the lower case 200, and prevent the environment-friendly gas in the upper and lower installation chambers 110 and 210 from leaking between the peripheral edge of the upper opening 120 and the peripheral edge of the lower opening 220.
Referring to fig. 1 to 8, in some embodiments, the first conductive sheet 440 is connected to the rear outlet end of the first isolating switch 310, the second conductive sheets 441 are connected to the rear outlet ends of the two second isolating switches 320, the two second conductive sheets 441 are in contact, and the first conductive sheet 440 extends to the lower mounting cavity 210 through the upper and lower openings 120 and 220 and is in contact with one of the second conductive sheets 441.
The arrangement of the first conductive sheet 440 and the two second conductive sheets 441 facilitates the electrical connection of the rear outlet terminals of the first disconnector 310 with the rear outlet terminals of the two first disconnectors 310. The arrangement of the upper opening 120 and the lower opening 220 provides a channel for the connection between the first conductive sheet 440 and the two second conductive sheets 441, thereby being capable of facilitating the reasonable distribution layout among the electric elements inside the combined electrical apparatus, and making the internal structure of the combined electrical apparatus more compact.
Referring to fig. 1 to 8, in some embodiments, two sets of supporting members 230 are further provided between the upper case 100 and the lower case 200, and one end of the supporting member 230 is connected to the outer sidewall of the upper case 100 and the other end is connected to the outer sidewall of the lower case 200.
In the above structure, the support 230 can make the connection and installation between the upper case 100 and the lower case 200 more firm, and prevent the upper case 100 from collapsing or other conditions.
It is understood that the two sets of the supporting members 230 may be symmetrically disposed at both left and right sides of the upper and lower openings 120 and 220, thereby enabling the upper case 100 to be more stably and evenly mounted above the lower case 200. And the two sets of supporting members 230 also make the connection between the upper case 100 and the lower case 200 more firm. Of course, the number of the supporting members 230 is two, only for one exemplary illustration of fig. a, and the number of the supporting members 230 may be two, one, three or more, and the present invention is not particularly limited.
It should be understood that the supporting member 230 is disposed between the upper case 100 and the lower case 200, and specifically, one end of the supporting member 230 may be welded to the outer sidewall of the upper case 100, and the other end may be welded to the outer sidewall of the lower case 200, or the supporting member 230 may be fixedly connected to the outer sidewall of the upper case 100 and the outer sidewall of the lower case 200 by fastening members, which is not particularly limited.
Referring to fig. 1 to 8, in some embodiments, the upper case 100 and the lower case 200 each have a cylindrical can arranged in a horizontal direction.
In the above-described structure, the upper case 100 and the lower case 200 are both provided as the cylindrical cans arranged in the horizontal direction, which can be more suitably used for the inner structure of the fan tower, so that the combined apparatus can be more conveniently installed inside the fan tower.
Referring to fig. 1 to 8, in some embodiments, a first outlet sleeve 401 is mounted to the upper mounting cavity 110 and extends to the outside of the upper mounting cavity 110, the first outlet sleeve 401 has a first abutting portion 404 located at the outside of the upper mounting cavity 110 at the outer periphery thereof, the first outlet sleeve 401 is further sleeved with a first pressing portion 405, and the first pressing portion 405 abuts against the outer side surface of the first abutting portion 404 and is mounted to the outer side wall of the upper case 100 by a first fastener.
In the above-described structure, the first pressing portion 405 is abutted against the outer side surface of the first abutment portion 404 and is mounted to the outer side wall of the upper case 100 by the first fastener, so that the first abutment portion 404 of the first outlet sleeve 401 is clamped and fixed between the first pressing portion 405 and the outer side wall of the upper case 100, which enables the first outlet sleeve to be stably mounted on the side wall of the upper case 100.
It will be appreciated that the first fastening member may be a bolt fastening member or a screw fastening member, and in addition, a fastening structure may be also used, which is not particularly limited to the present invention.
Referring to fig. 1 to 8, in some embodiments, in each group of switch assemblies, a second outlet bushing 411 is mounted to the lower mounting cavity 210 and extends to the outside of the lower mounting cavity 210, an outer circumference of the second outlet bushing 411 has a second abutting portion 414 located at the outside of the lower mounting cavity 210, an outer circumference of the second outlet bushing 411 is further sleeved with a second pressing portion 415, and the second pressing portion 415 abuts against an outer side surface of the second abutting portion 414 and is mounted to an outer side wall of the lower case 200 by a second fastener.
In the above-described structure, the second pressing portion 415 is abutted against the outer side surface of the second abutment portion 414 and is mounted to the outer side wall of the lower case 200 by the second fastening member such that the second abutment portion 414 of the second outlet sleeve 411 is clamped and fixed between the second pressing portion 415 and the outer side wall of the lower case 200, which enables the second outlet sleeve to be stably mounted on the side wall of the lower case 200.
It will be appreciated that the second fastening member may be a bolt fastening member or a screw fastening member, and may also be a fastening structure, which is not particularly limited to this embodiment.
In some embodiments, the outer surfaces of the vacuum interrupter 300, the first disconnector 310, and the two second disconnectors 320 are each provided with a zinc-nickel plated layer.
In the structure, the zinc-nickel plating layer has good corrosion resistance, particularly in a humid environment, the zinc layer has good rust resistance, can better resist the oxidation of the surface of an object, and prevent the surface of the object from rusting, and the nickel layer can prevent the zinc layer from losing the corrosion resistance due to oxidation, so that better effect is achieved. Through all setting up zinc-nickel coating at vacuum circuit breaker 300, first isolator 310, the surface of two second isolator 320, can carry out anticorrosive protection to vacuum circuit breaker 300, first isolator 310, two second isolator 320 effectively for vacuum circuit breaker 300, first isolator 310, two second isolator 320 can adapt to ocean high salt fog, high moist operational environment better.
In some embodiments, the outer surfaces of all of the first, second, and third fasteners are provided with a dacromet coating.
In the structure, the Dacromet coating is also called as a zinc-chromium coating, and is a novel anticorrosive coating with zinc powder, aluminum powder, chromic acid and deionized water as main components. Through all setting up dyclonic coating at the surface of first fastener, second fastener, third fastener, can carry out anticorrosive protection to first fastener, second fastener, third fastener effectively for first fastener, second fastener, third fastener can adapt to ocean high salt fog, high moist operational environment better.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (10)
1. The marine wind power is with combination electrical apparatus, its characterized in that includes:
the upper box body (100) is provided with an upper mounting cavity (110), a vacuum circuit breaker (300), a first disconnecting switch (310) and a first insulation outgoing line assembly (400) are mounted in the upper mounting cavity (110), a rear outgoing line end of the vacuum circuit breaker (300) is electrically connected with a front outgoing line end of the first disconnecting switch (310), the first insulation outgoing line assembly (400) comprises a first outgoing line sleeve (401) and a first plug-in cable head (402), the first outgoing line sleeve (401) is mounted in the upper mounting cavity (110), one end of the first outgoing line sleeve (401) is electrically connected with the vacuum circuit breaker (300), and the first plug-in cable head (402) is mounted outside the upper box body (100) and can be mutually plugged with the other end of the first outgoing line sleeve (401);
the lower box (200) is provided with a lower mounting cavity (210) communicated with the upper mounting cavity (110), two groups of switch assemblies are mounted in the lower mounting cavity (210), each group of switch assemblies comprises a second isolating switch (320) and a second insulating outgoing line assembly (410), the rear outgoing line ends of the two second isolating switches (320) are electrically connected with the rear outgoing line ends of the first isolating switches (310), in each group of switch assemblies, the second insulating outgoing line assembly (410) comprises a second outgoing line sleeve (411) and a second plug-in cable head (412), the second outgoing line sleeve (411) is mounted in the lower mounting cavity (210), one end of the second outgoing line sleeve (411) is electrically connected with the front outgoing line end of the second isolating switch (320), and the second plug-in cable head (412) is mounted outside the lower box (200) and can be mutually plugged with the other end of the second outgoing line sleeve (411).
2. The offshore wind power combiner according to claim 1, further comprising a first cable chamber (130), a second cable chamber (240), a third cable chamber (250), wherein the first cable chamber (130), the second cable chamber (240), and the third cable chamber (250) are all metal compartments;
the vacuum circuit breaker (300) is positioned at the left side of the first disconnecting switch (310), the first cable chamber (130) is arranged at the left side of the upper box body (100), and the outer end of the first wire outlet sleeve (401) and the first plug-in cable head (402) are both positioned in the first cable chamber (130);
the two groups of switch assemblies are symmetrically arranged along the left-right direction, the second cable chamber (240) is arranged on the left side of the lower box body (200), the third cable chamber (250) is arranged on the right side of the lower box body (200), the outer end of the second outlet sleeve (411) of the switch assembly and the second plug-in cable head (412) which are positioned on the left side are both positioned in the second cable chamber (240), and the outer end of the second outlet sleeve (411) of the switch assembly and the second plug-in cable head (412) which are positioned on the right side are both positioned in the third cable chamber (250).
3. The offshore wind power combiner according to claim 1, wherein the upper case (100) has an upper opening (120) communicating with the upper mounting chamber (110), the lower case (200) has a lower opening (220) communicating with the lower mounting chamber (210), and a peripheral edge of the upper opening (120) and a peripheral edge of the lower opening (220) are abutted to each other and detachably connected by a third fastener.
4. A marine wind power combiner according to claim 3, wherein the upper mounting cavity (110) and the lower mounting cavity (210) are filled with an environmental friendly gas.
5. The offshore wind power combiner according to claim 4, wherein a seal is sandwiched between the periphery of the upper opening (120) and the periphery of the lower opening (220).
6. A marine wind power combiner according to claim 3, wherein the rear outlet end of the first disconnector (310) is connected with a first conductive sheet (440), the rear outlet ends of the two second disconnectors (320) are connected with second conductive sheets (441), the two second conductive sheets (441) are in contact, and the first conductive sheet (440) extends through the upper opening (120) and the lower opening (220) to the lower mounting cavity (210) and is in contact with one of the second conductive sheets (441).
7. A combined electrical appliance for offshore wind power according to claim 3, wherein at least one group of supporting members (230) is further arranged between the upper case (100) and the lower case (200), one end of each supporting member (230) is connected to the outer side wall of the upper case (100), and the other end is connected to the outer side wall of the lower case (200).
8. A marine wind power combiner according to claim 3, wherein the upper and lower tanks (100, 200) each have a cylindrical tank arranged in a horizontal direction.
9. A marine wind power combiner according to claim 3, wherein the first outlet sleeve (401) is mounted in the upper mounting cavity (110) and extends to the outside of the upper mounting cavity (110), the first outlet sleeve (401) has a first abutting portion (404) located at the outside of the upper mounting cavity (110) at the periphery, the first outlet sleeve (401) is further sleeved with a first extruding portion (405), and the first extruding portion (405) abuts against the outer side surface of the first abutting portion (404) and is mounted on the outer side wall of the upper box (100) through a first fastener;
in each group of switch assemblies, the second outlet sleeve (411) is mounted in the lower mounting cavity (210) and extends to the outside of the lower mounting cavity (210), a second abutting portion (414) located at the outside of the lower mounting cavity (210) is arranged on the periphery of the second outlet sleeve (411), a second extrusion portion (415) is sleeved on the periphery of the second outlet sleeve (411), and the second extrusion portion (415) abuts against the outer side face of the second abutting portion (414) and is mounted on the outer side wall of the lower box body (200) through a second fastener.
10. The offshore wind power combiner according to claim 9, wherein the outer surfaces of the vacuum circuit breaker (300), the first isolating switch (310) and the two second isolating switches (320) are provided with zinc-nickel plating layers;
the outer surfaces of all the first fastening piece, the second fastening piece and the third fastening piece are provided with Dacromet coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311503682.3A CN117559276A (en) | 2023-11-10 | 2023-11-10 | Combined electrical apparatus for offshore wind power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311503682.3A CN117559276A (en) | 2023-11-10 | 2023-11-10 | Combined electrical apparatus for offshore wind power |
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| CN117559276A true CN117559276A (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311503682.3A Pending CN117559276A (en) | 2023-11-10 | 2023-11-10 | Combined electrical apparatus for offshore wind power |
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| CN (1) | CN117559276A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101315437B1 (en) * | 2013-07-19 | 2013-10-07 | 주식회사 비츠로테크 | Gas insulated switchgear |
| CN104377585A (en) * | 2014-11-28 | 2015-02-25 | 湖南长高高压开关集团股份公司 | Modular intelligent box type fixed inflatable high-voltage AC metal enclosure switching equipment |
| CN104584348A (en) * | 2012-08-28 | 2015-04-29 | 西门子公司 | Gas-insulated switchgear assembly |
| CN105075039A (en) * | 2013-02-13 | 2015-11-18 | 三菱电机株式会社 | Gas-insulated switchgear |
| CN113422318A (en) * | 2021-05-31 | 2021-09-21 | 沈阳华德海泰电器有限公司 | 72.5kV looped netowrk cabinet of offshore wind power is exclusively used in |
| CN214479038U (en) * | 2020-12-28 | 2021-10-22 | 北京双杰电气股份有限公司 | Large-breaking-capacity environment-friendly gas insulated switch cabinet |
| CN114725821A (en) * | 2022-03-14 | 2022-07-08 | 广东明阳电气股份有限公司 | Insulated switch cabinet |
| CN217507981U (en) * | 2022-03-04 | 2022-09-27 | 广东明阳电气股份有限公司 | Multi-isolating switch combined inflating cabinet |
| CN116260067A (en) * | 2023-03-24 | 2023-06-13 | 江苏大全长江电器股份有限公司 | 72.5kV single-tank type environment-friendly gas insulation GIS structure for offshore wind power tower |
-
2023
- 2023-11-10 CN CN202311503682.3A patent/CN117559276A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584348A (en) * | 2012-08-28 | 2015-04-29 | 西门子公司 | Gas-insulated switchgear assembly |
| CN105075039A (en) * | 2013-02-13 | 2015-11-18 | 三菱电机株式会社 | Gas-insulated switchgear |
| KR101315437B1 (en) * | 2013-07-19 | 2013-10-07 | 주식회사 비츠로테크 | Gas insulated switchgear |
| CN104377585A (en) * | 2014-11-28 | 2015-02-25 | 湖南长高高压开关集团股份公司 | Modular intelligent box type fixed inflatable high-voltage AC metal enclosure switching equipment |
| CN214479038U (en) * | 2020-12-28 | 2021-10-22 | 北京双杰电气股份有限公司 | Large-breaking-capacity environment-friendly gas insulated switch cabinet |
| CN113422318A (en) * | 2021-05-31 | 2021-09-21 | 沈阳华德海泰电器有限公司 | 72.5kV looped netowrk cabinet of offshore wind power is exclusively used in |
| CN217507981U (en) * | 2022-03-04 | 2022-09-27 | 广东明阳电气股份有限公司 | Multi-isolating switch combined inflating cabinet |
| CN114725821A (en) * | 2022-03-14 | 2022-07-08 | 广东明阳电气股份有限公司 | Insulated switch cabinet |
| CN116260067A (en) * | 2023-03-24 | 2023-06-13 | 江苏大全长江电器股份有限公司 | 72.5kV single-tank type environment-friendly gas insulation GIS structure for offshore wind power tower |
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