CN114389193B - Inflatable overhead wire inlet cabinet - Google Patents
Inflatable overhead wire inlet cabinet Download PDFInfo
- Publication number
- CN114389193B CN114389193B CN202111455339.7A CN202111455339A CN114389193B CN 114389193 B CN114389193 B CN 114389193B CN 202111455339 A CN202111455339 A CN 202111455339A CN 114389193 B CN114389193 B CN 114389193B
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- cabinet body
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- 230000003068 static effect Effects 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims description 38
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 12
- 239000012212 insulator Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 35
- 238000007789 sealing Methods 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 230000006872 improvement Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 206010066054 Dysmorphism Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
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
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- 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
-
- 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
- H02B13/0358—Connections to in or out conductors
-
- 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
- H02B13/075—Earthing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to an inflatable overhead wire inlet cabinet which comprises a cabinet body, wherein three-phase wire inlet wiring terminals penetrating through the top of the cabinet body up and down are arranged in the cabinet body and are used for being electrically connected with overhead high-voltage equipment, the three-phase wire inlet wiring terminals are arranged side by side in the left-right direction, a three-phase main loop is arranged in the cabinet body and comprises solid-sealed polar posts, isolating switches and external main buses, the wire inlet sides of the solid-sealed polar posts of the three-phase main loop are correspondingly connected with the three-phase wire inlet wiring terminals, the wire outlet sides of the three-phase solid-sealed polar posts are electrically connected with middle contact seats of the isolating switches, closing static contact seats of the isolating switches are electrically connected with the external main buses, the solid-sealed polar posts of the three-phase main loop and the isolating switches are arranged side by side in the front-rear direction and extend in the left-right direction, and the wire inlet sides of the three-phase main loops are electrically connected with corresponding wire inlet wiring terminals through integrally bent conducting rods.
Description
Technical Field
The invention relates to the field of high-voltage electricity, in particular to an inflatable overhead wire inlet cabinet.
Background
The inflatable cabinet is characterized in that equipment such as a circuit breaker, a grounding switch, an isolating switch and the like is sealed in an air chamber filled with sulfur hexafluoride or other insulating gases so as to ensure the insulating performance of the switch equipment, and the inflatable cabinet has the advantages of compact structure, high insulating reliability and no maintenance, and is becoming more and more important in the market.
In an electric power system, overhead incoming lines are generally low in cost and widely applied. When the switch cabinet adopts an overhead wire-feeding mode, a bus is usually led out from a transformer, and enters a cable chamber of the switch cabinet from the top of the switch cabinet in an overhead wire-feeding mode.
The inflatable overhead incoming line cabinet in the prior art is generally provided with a cabinet body, three-phase incoming line wiring terminals penetrating through the top of the cabinet body up and down are arranged in the cabinet body, each phase of incoming line wiring terminal is connected with a main circuit, each main circuit comprises an external main bus, a disconnecting switch and a solid sealing pole, the incoming line wiring terminals are used for being connected with overhead high-voltage equipment, incoming line sides of the solid sealing poles of the main circuits are correspondingly connected with the wire wiring terminals, outgoing line sides of the solid sealing poles are electrically connected with a middle contact seat of the disconnecting switch, a closing static contact seat of the disconnecting switch is electrically connected with the external main bus, and the external main bus is used for being connected with other switch cabinets.
However, the direction of orderly spaced arrangement of the three-phase isolating switches in the cabinet body is inconsistent with the direction of orderly spaced arrangement of the three-phase external main buses, each external main bus can be correspondingly and conductively connected with each isolating switch after being commutated by the commutating copper bars, when the incoming line cabinet is used in a high-voltage environment, the thickness and the number of the commutating copper bars are also required to be correspondingly increased, the assembly is inconvenient, more space is occupied, and the resistor of each main circuit is overlarge, the heating value is high and the safety performance is poor after the commutating copper bars are increased.
Disclosure of Invention
The invention aims to provide an inflatable overhead wire inlet cabinet, which solves the technical problems of large heating value and poor safety performance of the inflatable overhead wire inlet cabinet in the prior art.
In order to achieve the above purpose, the technical scheme of the inflatable overhead wire inlet cabinet provided by the invention is as follows: the utility model provides an inflatable processing inlet wire cabinet, the intelligent cabinet temperature adjusting device comprises a cabinet body, be equipped with the three-phase inlet wire wiring terminal of passing cabinet body top from top to bottom in the cabinet body, three-phase inlet wire wiring terminal is used for being connected with overhead high-voltage equipment electricity, three-phase inlet wire wiring terminal is arranged side by side in the left and right directions, the cabinet is internal to be equipped with three-phase main loop, three-phase main loop all includes solid sealed utmost point post, isolator and external main busbar, the inlet wire side of the solid sealed utmost point post of three-phase main loop corresponds with three-phase inlet wire wiring terminal and is connected, the outlet wire side of the solid sealed utmost point post of three-phase is electrically connected with isolator's middle touch seat, isolator's combined floodgate static touch seat is electrically connected with external main busbar, the solid sealed utmost point post of three-phase main loop and isolator all are arranged side by side in the front and back direction of the cabinet body, and extend in the left and right directions, the inlet wire side of each solid sealed utmost point post of looks all is connected with corresponding inlet wire electricity through the conducting rod of an organic whole buckling.
The beneficial effects are that: according to the inflatable overhead incoming line cabinet provided by the invention, the three-phase external main bus, the three-phase solid-sealed polar poles and the three-phase isolating switch are sequentially arranged at intervals along the front-back direction of the cabinet body, the arrangement directions are consistent, so that the external main bus and the isolating switch can be directly connected in a conductive manner without reversing through copper bars, a large number of copper bars are omitted, the heating value between the external main bus and the isolating switch is further reduced, the temperature rise is reduced, the lower ends of the solid-sealed polar poles are not connected through the copper bars, and are connected through integrally bent conductive rods, conductive connection points are reduced, the resistance between the solid-sealed polar poles and the incoming line terminal is further reduced, the heating value is further reduced, and the safety performance is improved.
As a further improvement, a bus gas tank and a switch gas tank are arranged in the cabinet body, each of the external main buses is positioned in the bus gas tank, two ends of each of the external main buses are external terminals, the external terminals leak out of the cabinet body, and each of the solid sealed polar poles and each of the isolating switches are positioned in the switch gas tank.
The beneficial effects are that: the arrangement of the bus gas box and the switch gas box improves the insulation performance of the incoming line cabinet, and the two gas boxes isolate the external main bus from the isolating switch and the solid-sealed polar pole, so that the maintenance is convenient.
As a further improvement, the bus gas tank and the switch gas tank are vertically separated through a horizontal partition board, each phase of solid-sealed polar pole and each phase of isolating switch extend along the vertical direction, the closing static contact seat of each phase of isolated switch is arranged on the horizontal partition board, the lower side surface of the horizontal partition board is provided with a mounting seat, the upper end of each phase of solid-sealed polar pole is connected to the mounting seat, and the grounding static contact seat and the middle contact seat of each phase of isolating switch are fixedly connected to the wall of the cabinet body.
The beneficial effects are that: the closing static contact seat of each phase of isolating switch is arranged on the horizontal partition plate, the installation seat is arranged on the lower side surface of the horizontal partition plate, and the upper ends of the phase of solid sealing polar poles are all connected to the installation seat, so that the isolating switch and the solid sealing polar poles in the switch gas tank are firmly installed, and the structure is simple and the reliability is good.
As a further improvement, a pressure relief cavity is further partitioned in the cabinet body, an explosion-proof valve is arranged between the pressure relief cavity and the bus gas box and between the pressure relief cavity and the switch gas box respectively, a pressure relief opening is formed in the top of the pressure relief cavity, and the pressure relief cavity is located at the rear sides of the bus gas box and the switch gas box.
The beneficial effects are that: insulating gas in the cabinet body can be discharged from the pressure release cavity through the explosion-proof valve after being heated and expanded, so that the explosion of the cabinet body is avoided, and the safety performance of the incoming line cabinet is improved.
As a further improvement, the cabinet body is also provided with a mechanism chamber, and the mechanism chamber is positioned at one side of the main loop, which is opposite to the wire inlet terminal.
The beneficial effects are that: the mechanism chamber is positioned at one side of the cabinet body, which is back to the wire inlet wiring end, of the solid sealing pole, and the operating mechanism in the mechanism chamber is isolated from the bus gas tank and the switch gas tank, so that the maintenance is convenient.
As a further improvement, one end of each conducting rod is connected with the inlet wire side of the corresponding solid-sealed polar pole through a holding structure, the inlet wire side is of a columnar conducting structure, the holding structure comprises a special-shaped connecting column and a semicircular connecting block, the upper end of the special-shaped connecting column is provided with a semicircular arc groove, the semicircular connecting block forms a circular counter bore for the conducting column to be closely inserted after being abutted to the semicircular arc groove, the semicircular connecting block and the special-shaped connecting column hold the columnar inlet wire side through locking bolts passing through the semicircular connecting column and the semicircular connecting block in the radial direction, and the end part of the conducting rod is connected with the special-shaped connecting column.
The beneficial effects are that: the conducting rod is tightly held and tightly connected with the solid sealed polar pole through the holding structure, so that the contact area of the conducting rod and the solid sealed polar pole is increased, the resistance of a connecting point is reduced, the heating value is smaller, and the through-flow capacity is increased.
As a further improvement, the conducting rods are laterally connected to the special-shaped connecting columns, and support insulators are arranged at the lower ends of the special-shaped connecting columns and connected with the special-shaped connecting columns.
The beneficial effects are that: the support insulator can effectively support each solid sealed pole, and the insulation design between the solid sealed pole and the cabinet body is realized.
As a further improvement, one end of the conducting rod far away from the solid-sealed polar pole is matched with the wire inlet wiring terminal through a spigot structure.
The beneficial effects are that: the conducting rod is matched with the spigot of the solid sealing pole, so that the contact area of the conducting rod and the spigot of the solid sealing pole is increased, the resistance is reduced, the through-flow capacity is improved, and the connection is convenient.
As a further improvement, the two ends of each external main bus are sleeved with external environment-friendly inner cones, each external main bus is composed of two D-shaped buses which are arranged at intervals, the arc-shaped side surfaces of the two D-shaped buses are arranged in a back-to-back mode, a plug board is arranged at one end of each external environment-friendly inner cone, which faces the external main bus, and is inserted into the interval of the two D-shaped buses and is connected with the two D-shaped buses through bolts, an inserting plate is arranged at the upper end of a closing static contact seat of a corresponding isolating switch, and the inserting plate is inserted into the interval of the two D-shaped buses from bottom to top and is connected with the two D-shaped buses through bolts.
The beneficial effects are that: the external main bus consists of two D-shaped buses, and when the external main bus is connected, the external environment-friendly inner cone is sleeved on the arc-shaped side surface of the D-shaped bus, so that the contact area is increased, the resistance is reduced, and the current passing capacity is improved.
As a further improvement, the hole for inserting the bolt on the arc-shaped side surface of the D-shaped bus bar is a counter bore.
The beneficial effects are that: the counter bore enables the bolt to sink, so that the bolt is prevented from leaking, the generation of a tip is further avoided, and the electric field is uniform.
Drawings
Fig. 1 is a schematic structural diagram of an inflatable overhead line incoming cabinet provided by the invention;
FIG. 2 is a schematic diagram of the main circuit in FIG. 1;
FIG. 3 is a schematic diagram of the connection of the incoming wire terminal to the encapsulated pole;
FIG. 4 is a schematic diagram of the connection of a conductive rod to an encapsulated pole;
FIG. 5 is a schematic view of the hugging structure of FIG. 4;
FIG. 6 is a schematic view of the structure of the environmental cone of FIG. 3;
fig. 7 is a schematic view of the structure of the support insulator in fig. 3.
Reference numerals illustrate: 1. a cabinet body; 2. a wire inlet chamber; 21. a wire inlet wiring terminal; 22. a current transformer; 23. an environment-friendly inner cone; 231. an environment-friendly inner cone connecting end; 232. bolt holes; 3. a bus gas box; 31. externally connecting a main bus; 32. externally connected with an environment-friendly inner cone; 33. a D-shaped bus; 4. a horizontal partition; 5. switching the gas tank; 51. sealing the polar post; 511. a mounting base; 52. an isolating switch; 53. a conductive rod; 6. a mechanism chamber; 7. a pressure relief cavity; 8. a clasping structure; 81. a special-shaped connecting column; 82. a semicircular connecting block; 83. a columnar conductive structure; 84. a connection hole; 9. a support insulator; 91. a connecting column; 92. a support part; 10. and a grounding structure.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It should be noted that in the present embodiment, relational terms such as "first" and "second" and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" or the like, as may occur, does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the depicted element.
In the description of the present invention, unless explicitly stated and limited otherwise, terms such as "mounted," "connected," and "connected" may be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
In the description of the present invention, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
The present invention is described in further detail below with reference to examples.
Example 1 of an inflatable overhead line cabinet provided in the present invention:
as shown in fig. 1 and 2, the inflatable overhead incoming line cabinet comprises a cabinet body 1, a bus gas box 3 and a switch gas box 5 are vertically separated from the cabinet body 1 through a horizontal partition plate 4, the switch gas box 5 is located below the bus gas box 3, a mechanism chamber 6 is arranged on the front sides of the switch gas box 5 and the bus gas box 3 in the cabinet body 1, an operation mechanism of an isolating switch 52 and a solid sealing pole 51 is arranged in the mechanism chamber 6 and used for driving the isolating switch 52 in the switch gas box 5 and a breaker in the solid sealing pole 51 to act respectively, an incoming line chamber 2 is arranged on the rear sides of the switch gas box 5 and the bus gas box 3 in the cabinet body 1, a pressure relief cavity 7 is arranged on the rear side of the incoming line chamber 2, a pressure relief opening is formed in the top of the pressure relief cavity 7, an explosion-proof valve is arranged between the pressure relief cavity 7 and the switch gas box 5 and the bus gas box 3, the explosion-proof valve is opened when the internal air pressure of the bus gas box 3 and the switch gas box 5 is overhigh, and high-pressure gas is discharged from the pressure relief cavity 7 through the pressure relief opening.
The three-phase wire inlet wiring terminals 21 are arranged in the wire inlet chamber 2, the three-phase wire inlet wiring terminals 21 are sequentially arranged at intervals along the left-right direction of the cabinet body 1 and extend vertically, the wire inlet side of the upper end of each wire inlet wiring terminal 21 is used for overhead equipment connection, a current transformer 22 is arranged in the middle of each wire inlet wiring terminal 21, and the wire outlet side of the lower end of each wire inlet wiring terminal 21 is correspondingly and conductively connected with each phase of solid-sealed polar pole 51 in the switch gas tank 5.
The three-phase external main buses 31 are arranged in the bus air box 3, the three-phase external main buses 31 extend along the left and right directions of the cabinet body 1 and are sequentially arranged at intervals along the front and rear directions of the cabinet body 1, the structures of the external main buses 31 are consistent and are formed by arranging two D-shaped buses 33 relatively, external environment-friendly inner cones 32 are arranged at two ends of each external main bus 31, the external environment-friendly inner cones 32 are sleeved on the external main buses 31, the inner side surfaces of the external environment-friendly inner cones 32 can be in tight contact with the arc-shaped side surfaces of the D-shaped buses 33, plug boards are arranged at the positions, facing the end parts of the external environment-friendly inner cones 32, of the external main buses 31, of the plug boards are inserted into the intervals of the two D-shaped buses 33 of the same external main bus 31 and are connected with the two D-shaped buses 33 through plug bolts, and after the bolts are connected onto the D-shaped buses 33, heads of the bolts sink into the arc-shaped side surfaces of the D-shaped buses 33 so as to avoid tip discharge.
The switch air box 5 is internally provided with three-phase solid-sealed polar poles 51 and three-phase isolating switches 52, the three-phase solid-sealed polar poles 51 and the three-phase isolating switches 52 extend vertically and are sequentially arranged at intervals along the front-back direction of the cabinet body 1, and each phase of isolating switches 52 and each phase of solid-sealed polar poles 51 are in one-to-one corresponding conductive connection on the left side of the solid-sealed polar poles 51. Each isolating switch comprises a closing static contact seat, a middle contact seat and a grounding static contact seat, the closing static contact seats at the upper ends of the isolating switches 52 are connected with the external main buses 31 in a one-to-one correspondence manner through insulators penetrating through the horizontal partition plates 4, the grounding static contact seats at the lower ends of the isolating switches 52 are provided with grounding structures 10, the grounding structures 10 are connected with the cabinet walls of the cabinet body 1, when the isolating switches 52 are grounded, currents are led out of the cabinet body 1, the maintenance is convenient, and a transmission rod in the middle contact seat in the middle of each isolating switch 52 is in transmission connection with an operating mechanism of the isolating switch in the mechanism chamber 6.
The lower side of the horizontal partition plate 4 is fixedly provided with a mounting seat 511, the upper end of each phase of solid-sealed polar pole 51 is fixedly arranged on the mounting seat 511, the upper ends of the movable contact pull rods in each phase of solid-sealed polar pole 51 are in transmission connection through transmission shafts on the mounting seat 511, and the wire inlet side of the lower end of each phase of solid-sealed polar pole 51 is in conductive connection with the wire outlet side of the lower end of each phase of wire inlet terminal 21 through a conductive rod 53.
Specifically, as shown in fig. 3, three conductive rods 53 are provided corresponding to each phase of solid-sealed polar pole 51 and each phase of wire inlet terminal 21, the outer peripheral surface of each conductive rod is a cylindrical surface, one end of each conductive rod 53 close to the wire inlet terminal 21 is a spigot structure, and is connected with the wire inlet terminal 21 through an environment-friendly inner cone 23, as shown in fig. 6, the whole of the environment-friendly inner cone 23 is a columnar structure, the upper end of the environment-friendly inner cone 23 is connected with the wire inlet terminal 21, the lower end of the environment-friendly inner cone 23 is an environment-friendly inner cone connecting end 231 of the spigot for being matched with the spigot of the conductive rod 53, and a bolt hole 232 is formed in the environment-friendly inner cone connecting end 231 and is fixedly connected with the conductive rod through a plug-in bolt; one end of each conducting rod 53, which is close to the corresponding solid sealed polar pole 51, is connected with the solid sealed polar pole 51 through a enclasping structure 8, as shown in fig. 4 and 5, a columnar conducting structure 83 is fixedly arranged at the lower end of the solid sealed polar pole 51, the enclasping structure 8 comprises a special-shaped connecting column 81 and a semicircular connecting block 82, a semicircular arc groove is arranged at the upper end of the special-shaped connecting column 81, and the semicircular connecting block 82 and the special-shaped connecting column 81 are in involution connection to form a circular counter bore for the columnar conducting structure 83 at the bottom of the corresponding solid sealed polar pole 51 to be tightly spliced, so that the contact area is increased, the current passing capacity is improved, and the resistance and the heating value are reduced; the lower part of the special-shaped connecting column 81 is provided with a connecting hole 84 for inserting and fixing one end of the conducting rod 53 close to the solid-sealed polar pole 51; the lower extreme of dysmorphism spliced pole 81 is equipped with support insulator 9, and as shown in fig. 7, support insulator 9 includes spliced pole 91 and supporting part 92, and the upper end of spliced pole 91 is the tang for cooperate with the lower extreme tang of dysmorphism spliced pole 81, and the lower extreme of supporting part 92 is connected with cabinet body 1 for support solid utmost point post 51.
The leftmost wire inlet terminal 21 of the three-phase wire inlet terminals 21 and the three-phase solid-sealed polar pole 51 are positioned on the same vertical plane, the corresponding conductive rod 53 is L-shaped, the conductive rod 53 corresponding to the other two wire inlet terminals 21 of the three conductive rods 53 comprises a vertical section, a first transverse section extending along the front-back direction and a second transverse section extending along the left-right direction, the first transverse section is positioned between the vertical section and the second transverse section, the vertical section is connected with the corresponding wire inlet terminal 21, and the second transverse section is connected on the side face of the special-shaped connecting column 81.
The external main buses 31, the phase isolating switches 52 and the phase solid-sealed polar poles 51 are in one-to-one correspondence to form a three-phase main circuit inside the incoming line cabinet, each phase isolating switch 52 is provided with three working positions, wherein the three working positions are an isolating switch-on position, a middle position and a grounding position respectively, when the isolating switch 52 is in the isolating switch-on position, the main circuit is communicated, when the isolating switch 52 is in the disconnecting position, the main circuit is disconnected, and when the isolating switch 52 is in the grounding position, current is introduced into the ground through the cabinet body 1.
When the incoming line cabinet is used, the incoming line cabinet is connected with the corresponding switch cabinet in a cabinet combining mode through the external main bus 31, after the incoming line cabinet is electrified, when the isolating switch 52 is in an isolated switch-on position, current enters the cabinet body 1 through the incoming line wiring terminal 21, then flows to the external main bus 31 through the solid-sealed polar pole 51 and the isolating switch 52, flows to the adjacent switch cabinet through the external main bus 31, when the isolating switch 52 is in a switch-off position, no current passes through a main circuit, when the incoming line cabinet breaks down, the isolating switch 52 is driven to be grounded, the potential in the incoming line cabinet is consistent with the ground, and the excessive damage to the health of an maintainer is avoided.
According to the inflatable overhead incoming line cabinet provided by the invention, the three-phase external main bus 31, the three-phase solid-sealed polar pole 51 and the three-phase isolating switch 52 are sequentially arranged at intervals along the front and rear directions of the cabinet body 1, the arrangement directions are consistent, so that the external main bus 31 and the isolating switch 52 can be directly connected in a conductive manner without reversing through copper bars, the use of a large number of copper bars is eliminated, the heating value between the external main bus 31 and the isolating switch 52 is further reduced, the temperature rise is reduced, the lower end of the solid-sealed polar pole 51 is not connected through the copper bars any more, and the conductive connection points are reduced by adopting the integrally bent conductive rods 53, so that the resistance between the solid-sealed polar pole 51 and the incoming line terminal 21 is further reduced, and the heating value is further reduced.
Example 2 of an inflatable overhead line chest provided in the present invention:
this embodiment differs from embodiment 1 in that: in embodiment 1, one end of the conductive rod 53 near the solid sealed pole 51 is electrically connected to the solid sealed pole 51 through the clasping structure 8. In this embodiment, the lower end of the solid sealed pole is matched with a spigot of the conducting rod, which is close to the solid sealed pole, and is fixed by a pin.
Example 3 of the inflatable overhead line cabinet provided in the invention:
this embodiment differs from embodiment 1 in that: in embodiment 1, the end of the conductive rod 53 away from the solid-sealed pole 51 is connected to the wire inlet terminal 21 by a spigot fit. In this embodiment, the end of the conducting rod, which is far away from the solid sealed polar pole, is connected with the wire inlet wire terminal through a holding structure, the lower end of the wire inlet wire terminal is provided with a columnar conducting structure, the holding structure comprises a special-shaped connecting pole and a semicircular connecting block, the upper end of the special-shaped connecting pole is provided with a semicircular arc groove, and after the semicircular connecting block and the special-shaped connecting pole are connected in a butt joint mode, a circular counter bore for the columnar conducting structure to be closely spliced is formed.
Example 4 of the inflatable overhead line cabinet provided in the invention:
this embodiment differs from embodiment 1 in that: in embodiment 1, each external main bus bar 31 is composed of D-shaped bus bars 33 arranged at intervals, the side surface of the external environment-friendly inner cone 32 facing the external main bus bar 31 is provided with a plug board, and the plug board is inserted into the interval between the two D-shaped bus bars 33 and is connected with the two D-shaped bus bars 33 through bolts. In this embodiment, each external main bus is a cylindrical bus, no inserting plate is arranged on the external environment-friendly inner cone, and the external environment-friendly inner cone is directly sleeved at two ends of the external main bus and is fixed with the cylindrical external main bus through bolts.
The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an inflatable overhead wire inlet cabinet, including cabinet body (1), be equipped with three-phase wire inlet wiring end (21) that pass cabinet body (1) top from top to bottom in cabinet body (1), three-phase wire inlet wiring end (21) are used for being connected with overhead high-voltage equipment, three-phase wire inlet wiring end (21) are arranged side by side in the left and right directions, be equipped with three-phase main loop in cabinet body (1), three-phase main loop all includes solid utmost point post (51), isolator (52) and external main bus (31), the inlet wire side of solid utmost point post (51) of three-phase main loop corresponds with three-phase wire inlet wiring end (21) and is connected, the wire outlet side of three-phase solid utmost point post (51) is connected with the centre touch seat conduction of isolator (52), the combined floodgate static touch seat of isolator (52) is connected with external main bus (31) electricity, its characterized in that, solid utmost point post (51) and isolator (52) of solid of three-phase main loop all are arranged side by side in the front and back direction, main bus (31) of three-phase main loop are parallel in the front and back direction, and all in the corresponding electric pole (21) of leading-in the wire inlet wire of each solid post (53) of buckling.
2. The inflatable overhead line incoming cabinet according to claim 1, wherein a bus gas box and a switch gas box (5) are arranged in the cabinet body (1), each of the external main buses (31) is arranged in the bus gas box, two ends of each of the external main buses (31) are external terminals, the external terminals leak out of the cabinet body (1), and each of the solid-sealed polar posts (51) and each of the isolating switches (52) are arranged in the switch gas box (5).
3. The inflatable overhead incoming line cabinet according to claim 2, wherein the bus air box and the switch air box (5) are vertically separated through a horizontal partition plate (4), each phase of solid-sealed pole (51) and each phase of isolating switch (52) extend in the vertical direction, a closing static contact seat of each phase of isolating switch (52) is mounted on the horizontal partition plate (4), a mounting seat (511) is arranged on the lower side surface of the horizontal partition plate (4), the upper end of each phase of solid-sealed pole (51) is connected to the mounting seat (511), and a grounding static contact seat and a middle contact seat of each phase of isolating switch (52) are fixedly connected to a cabinet wall of the cabinet body.
4. The inflatable overhead incoming line cabinet according to claim 3, wherein a pressure relief cavity (7) is further separated in the cabinet body (1), an explosion-proof valve is arranged between the pressure relief cavity (7) and the bus gas box and the switch gas box (5), a pressure relief opening is arranged at the top of the pressure relief cavity (7), and the pressure relief cavity is located at the rear sides of the bus gas box and the switch gas box (5).
5. An inflatable overhead line cabinet according to any one of claims 1 to 4, characterized in that the cabinet body (1) is further provided with a mechanism compartment (6), the mechanism compartment (6) being located on the side of the main circuit facing away from the line inlet terminal (21).
6. The inflatable overhead wire inlet cabinet according to any one of claims 1 to 4, wherein one end of each conductive rod (53) is connected with the wire inlet side of the corresponding solid sealed pole (51) through a holding structure (8), the wire inlet side is a columnar conductive structure (83), the holding structure (8) comprises a special-shaped connecting column (81) and a semicircular connecting block (82), the upper end of the special-shaped connecting column (81) is provided with a semicircular arc groove, the semicircular connecting block (82) forms a circular counter bore for the conductive column to be closely inserted after being abutted at the semicircular arc groove, the semicircular connecting block (82) and the special-shaped connecting column (81) hold the columnar wire inlet side through locking bolts passing through the semicircular connecting column and the special-shaped connecting column radially, and the end of the conductive rod (53) is connected with the special-shaped connecting column (81).
7. The inflatable overhead line incoming cabinet according to claim 6, wherein the conducting rods (53) are laterally connected to the special-shaped connecting columns (81), supporting insulators (9) are arranged at the lower ends of the special-shaped connecting columns (81), and the supporting insulators (9) are connected with the special-shaped connecting columns (81).
8. The inflatable overhead line incoming cabinet according to claim 6, characterized in that one end of the conducting rod (53) far away from the solid sealed polar pole (51) is matched with the line incoming terminal (21) through a spigot structure.
9. The inflatable overhead line cabinet according to any one of claims 1 to 4, wherein two ends of each external main bus bar (31) are sleeved with external environment-friendly inner cones (32), each external main bus bar (31) is composed of two D-shaped bus bars (33) arranged at intervals, arc-shaped side faces of the two D-shaped bus bars (33) are arranged oppositely, one end of each external environment-friendly inner cone (32) facing the external main bus bar (31) is provided with a plug board, the plug board is inserted into the interval of the two D-shaped bus bars (33) and is connected with the two D-shaped bus bars (33) through bolts, the upper end of a closing static contact seat of a corresponding isolating switch (52) is provided with an inserting plate, and the inserting plate is inserted into the interval of the two D-shaped bus bars (33) from bottom to top and is connected with the two D-shaped bus bars (33) through bolts.
10. The air-filled overhead line cabinet according to claim 9, wherein the holes in the arc-shaped side of the D-shaped bus bar (33) for the bolts to insert are counter bores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455339.7A CN114389193B (en) | 2021-12-01 | 2021-12-01 | Inflatable overhead wire inlet cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455339.7A CN114389193B (en) | 2021-12-01 | 2021-12-01 | Inflatable overhead wire inlet cabinet |
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| CN114389193A CN114389193A (en) | 2022-04-22 |
| CN114389193B true CN114389193B (en) | 2023-12-15 |
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| CN202111455339.7A Active CN114389193B (en) | 2021-12-01 | 2021-12-01 | Inflatable overhead wire inlet cabinet |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114389193A (en) | 2022-04-22 |
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