CN114389193A - Inflatable overhead incoming line cabinet - Google Patents
Inflatable overhead incoming line cabinet Download PDFInfo
- Publication number
- CN114389193A CN114389193A CN202111455339.7A CN202111455339A CN114389193A CN 114389193 A CN114389193 A CN 114389193A CN 202111455339 A CN202111455339 A CN 202111455339A CN 114389193 A CN114389193 A CN 114389193A
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- incoming line
- solid
- cabinet body
- switch
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- 230000003068 static effect Effects 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 12
- 239000012212 insulator Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 239000007789 gas Substances 0.000 description 29
- 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
- 239000007787 solid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 206010066054 Dysmorphism Diseases 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 241000272165 Charadriidae Species 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 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
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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
- H02B13/025—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
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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
- 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
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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
- H02B13/075—Earthing arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to an inflatable overhead incoming line cabinet, which comprises a cabinet body, wherein three-phase incoming line wiring terminals which vertically penetrate through the top of the cabinet body are arranged in the cabinet body and are used for being electrically connected with overhead high-voltage equipment, the three-phase incoming line wiring terminals are arranged side by side in the left and right direction, three-phase main loops are arranged in the cabinet body and comprise solid-sealed polar columns, isolating switches and external main buses, the incoming line sides of the solid-sealed polar columns of the three-phase main loops are correspondingly connected with the three-phase incoming line wiring terminals, the outgoing line sides of the three-phase solid-sealed polar columns are electrically connected with a middle contact seat of the isolating switches, closing static contact seats of the isolating switches are electrically connected with the external main buses, the solid-sealed polar columns of the three-phase main loops and the isolating switches are arranged side by side in the front and back direction of the cabinet body, the external main buses of the three-phase main loops are arranged side by side in the front and back direction and extend in the left and right direction, the wire inlet side of each solid-sealed polar pole is electrically connected with the corresponding wire inlet wiring end through the conductive rod which is bent integrally.
Description
Technical Field
The invention relates to the field of high-voltage electricity, in particular to an inflatable overhead incoming line cabinet.
Background
The gas-filled cabinet is characterized in that equipment such as a circuit breaker, an earthing switch, a disconnecting switch and the like are sealed in a gas chamber filled with sulfur hexafluoride or other insulating gases so as to ensure the insulating property of the switch equipment, and the gas-filled cabinet has the advantages of compact structure, high insulating reliability and no maintenance and is increasingly paid more attention to the market.
In an electric power system, an overhead incoming line is generally low in cost and relatively wide in application. When the switch cabinet adopts the mode of overhead incoming line, the bus is usually led out from the transformer, and enters a cable chamber of the switch cabinet from the top of the switch cabinet in the mode of overhead wiring.
The built on stilts inlet wire cabinet of inflatable among the prior art is equipped with the cabinet body usually, the internal three-phase inlet wire wiring end that passes cabinet body top from top to bottom that is provided with of cabinet, each looks inlet wire wiring end all is connected with a major loop, all include external main bus in every major loop, isolator and solid utmost point post that seals, the inlet wire wiring end is used for being connected with built on stilts high-tension apparatus, the inlet wire side and the line wiring end of the solid utmost point post that seals of major loop correspond and are connected, the play line side of solid utmost point post is connected with isolator's middle contact seat electricity, isolator's combined floodgate static contact seat is connected with external main bus electricity, external main bus is used for realizing with other cubical switchboard and is connected.
But the direction that the internal three-phase isolator of cabinet arranged at interval in proper order and the direction that the external main bus of three-phase arranged at interval in proper order are inconsistent, each external main bus of looks need through the switching-over copper bar change to the back just can correspond electrically conductive connection with each isolated switch, when the inlet wire cabinet is used for the environment of high voltage, the thickness and the quantity of switching-over copper bar also need corresponding increase, the assembly is inconvenient and occupy more spaces, and still lead to the resistance of each major loop too big after the switching-over copper bar increases, calorific capacity is many, the security performance is not good.
Disclosure of Invention
The invention aims to provide an inflatable overhead incoming line cabinet, which aims to solve the technical problems of high heat productivity and poor safety performance of the inflatable overhead incoming line cabinet in the prior art.
In order to achieve the purpose, the technical scheme of the inflatable overhead incoming line cabinet provided by the invention is as follows: an inflatable processing incoming line cabinet comprises a cabinet body, wherein three-phase incoming line wiring ends which vertically penetrate through the top of the cabinet body are arranged in the cabinet body and are used for being electrically connected with overhead high-voltage equipment, the three-phase incoming line wiring ends are arranged side by side in the left and right direction, a three-phase main loop is arranged in the cabinet body and comprises solid-sealed polar columns, an isolating switch and an external main bus, the incoming line sides of the solid-sealed polar columns of the three-phase main loop are correspondingly connected with the three-phase incoming line wiring ends, the outgoing line sides of the three-phase solid-sealed polar columns are electrically connected with a middle contact seat of the isolating switch, a closing static contact seat of the isolating switch is electrically connected with the external main bus, the solid-sealed polar columns of the three-phase main loop and the isolating switch are arranged side by side in the front and back direction of the cabinet body, the external main bus of the three-phase main loop is arranged side by side in the front and back direction, and extend in the left and right directions, the incoming line side of each solid seal pole is all connected with the corresponding incoming line wiring end through the conducting rod that integrative buckles.
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 embedded pole and the three-phase isolating switch are sequentially arranged at intervals along the front and back directions of the cabinet body, and the arrangement directions are consistent, so that the external main bus and the isolating switch can be directly electrically connected without being reversed by a copper bar, the use of a large number of copper bars is eliminated, the heat productivity between the external main bus and the isolating switch is reduced, the temperature rise is reduced, the lower ends of the embedded poles are not connected through the copper bars any longer, but are connected by the integrally bent conductive rods, the conductive connection points are reduced, the resistance between the embedded poles and the incoming line wiring terminal is reduced, the heat productivity is further reduced, and the safety performance is improved.
As a further improvement, a bus air box and a switch air box are arranged in the cabinet body, each phase of external main bus is located in the bus air box, two ends of each phase of external main bus are external ends, the external ends leak out of the cabinet body, and each phase of solid-sealed polar pole and each phase-isolated switch are located in the switch air box.
The beneficial effects are that: the setting of generating line gas tank and switch gas tank has improved the insulating properties of inlet wire cabinet, and two gas tanks keep apart external main bus and isolator and solid utmost point post, the easy access.
As a further improvement, the bus gas box and the switch gas box are vertically separated by a horizontal partition plate, each phase of solid-sealed polar pole and each phase-separated switch extend along the vertical direction, the closing static contact seat of each phase-separated switch is installed on the horizontal partition plate, the lower side surface of the horizontal partition plate is provided with an installation seat, the upper end of each phase of solid-sealed polar pole is connected to the installation seat, and the grounding static contact seat and the middle contact seat of each phase-separated switch are fixedly connected to the cabinet wall of the cabinet body.
The beneficial effects are that: the closing stationary contact seat of each phase isolating switch is installed on the horizontal partition plate, the lower side surface of the horizontal partition plate is provided with the installation seat, and the upper end of each phase solid-sealed polar pole is connected to the installation seat, so that the installation of the isolating switch and the solid-sealed polar pole in the switch gas box is stable, simple in structure and good in reliability.
As a further improvement, a pressure relief cavity is separated in the cabinet body, explosion-proof valves are respectively arranged between the pressure relief cavity and the bus air box and between the pressure relief cavity and the switch air box, a pressure relief opening is formed in the top of the pressure relief cavity, and the pressure relief cavity is located on the rear sides of the bus air box and the switch air box.
The beneficial effects are that: insulating gas in the cabinet body can be discharged from the pressure relief cavity through the explosion-proof valve after being heated and expanded, so that the cabinet body is prevented from being exploded, and the safety performance of the incoming line cabinet is improved.
As a further improvement, the cabinet body is further provided with a mechanism chamber, and the mechanism chamber is positioned on one side of the main loop, which faces away from the incoming line wiring terminal.
The beneficial effects are that: the mechanism chamber is positioned on one side, back to the incoming line wiring end, of the solid-sealed polar pole in the cabinet body, and an operating mechanism in the mechanism chamber is isolated from the bus gas box and the switch gas box, so that the maintenance is convenient.
As a further improvement, one end of each conducting rod is connected with the incoming line side of the corresponding solid-sealed polar pole through a holding structure, the incoming line side is of a columnar conducting structure, the holding structure comprises a special-shaped connecting column and a semicircular connecting block, a semicircular arc groove is formed in the upper end of the special-shaped connecting column, the semicircular connecting block is closed to form a circular counter bore for the tight insertion of the conducting column after the semicircular arc groove, the semicircular connecting block and the special-shaped connecting column radially penetrate through locking bolts between the semicircular connecting block and the special-shaped connecting column to hold the columnar incoming line side tightly, and the end portion of each conducting rod is connected with the special-shaped connecting column.
The beneficial effects are that: the conducting rod is tightly connected with the solid-sealed polar pole in a holding manner 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 connection point is reduced, the heat productivity is small, and the through-current capacity is increased.
As a further improvement, the conducting rod is laterally connected to the special-shaped connecting columns, the lower ends of the special-shaped connecting columns are provided with supporting insulators, and the supporting insulators are connected with the special-shaped connecting columns.
The beneficial effects are that: the supporting insulator can effectively support each solid-sealed polar pole and realize the insulation design between the solid-sealed polar pole and the cabinet body.
As a further improvement, one end of the conducting rod, far away from the solid-sealed polar pole, is matched with the incoming line wiring end through a spigot structure.
The beneficial effects are that: the conducting rod is matched with the spigot of the solid-sealed polar pole, so that the contact area of the conducting rod and the spigot is increased, the resistance is reduced, the through-current capacity is improved, and the connection is facilitated.
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 faces of the two D-shaped buses are arranged oppositely, one ends of the external environment-friendly inner cones, facing the external main buses, are provided with insertion plates, the insertion plates are inserted into the intervals of the two D-shaped buses and are connected with the two D-shaped bus bolts, the upper ends of closing static contact seats of corresponding isolating switches are provided with insertion plates, and the insertion plates are inserted into the intervals of the two D-shaped buses from bottom to top and are connected with the two D-shaped bus bolts.
The beneficial effects are that: the external main bus is composed of two D-shaped buses, and during connection, the external environment-friendly inner cone is sleeved on the arc-shaped side face of the D-shaped buses, so that the contact area is increased, the resistance is reduced, and the through-current 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 makes the bolt sink in, avoids the bolt to spill, and then avoids most advanced production, and the electric field is comparatively even.
Drawings
Fig. 1 is a schematic structural view of an inflatable overhead incoming line cabinet provided by the present invention;
FIG. 2 is a schematic diagram of the main circuit of FIG. 1;
FIG. 3 is a schematic view of the connection of an incoming wire terminal to a sealed pole post;
FIG. 4 is a schematic view of the connection between the conductive rod and the sealing pole;
FIG. 5 is a schematic structural view of the clasping structure of FIG. 4;
FIG. 6 is a schematic view of the environmentally friendly inner cone of FIG. 3;
fig. 7 is a schematic structural view of the support insulator in fig. 3.
Description of reference numerals: 1. a cabinet body; 2. a wire inlet chamber; 21. an incoming wire 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. a main bus is externally connected; 32. an environment-friendly inner cone is externally connected; 33. a D-shaped bus; 4. a horizontal partition plate; 5. opening and closing the air box; 51. solid-sealing the pole; 511. a mounting seat; 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. connecting holes; 9. a support insulator; 91. connecting columns; 92. a support portion; 10. and a grounding structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of 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 present invention, 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 derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that, in the embodiments of the present invention, relational terms such as "first" and "second", and the like, which may be present in the embodiments, are only used for distinguishing one entity or operation from another entity or operation, and do not necessarily require or imply that such actual relationships or orders between the entities or operations exist. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, 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 appearances of the phrase "comprising an … …" or similar limitation may be present without necessarily excluding the presence of additional identical elements in the process, method, article, or apparatus that comprises the same elements.
In the description of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "connected" that may be present are to be construed broadly, e.g., as a fixed connection, a releasable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, unless otherwise specifically stated or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
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 partitioned from the cabinet body 1 by a horizontal partition plate 4, the switch gas box 5 is located below the bus gas box 3, a mechanism chamber 6 is arranged at the front side of the switch gas box 5 and the bus gas box 3 in the cabinet body 1, an isolating switch 52 and an operating mechanism of a solid-sealed polar pole 51 are arranged in the mechanism chamber 6, the circuit breaker action that is used for the inside isolator 52 of drive switch gas tank 5 respectively and seals utmost point post 51 admittedly, the cabinet is internal to be equipped with inlet wire room 2 in the rear side of switch gas tank 5 and generating line gas tank 3, the rear side of inlet wire room 2 is equipped with pressure release chamber 7, the top of pressure release chamber 7 is equipped with the pressure release mouth, all be equipped with explosion-proof valve between pressure release chamber 7 and switch gas tank 5 and the generating line gas tank 3, explosion-proof valve is opened when generating line gas tank 3 and the inside atmospheric pressure of switch gas tank 5 are too high, high-pressure gas is discharged by the pressure release mouth through pressure release chamber 7.
Be equipped with the inlet wire wiring end 21 of three-phase in the inlet wire room 2, three-phase inlet wire wiring end 21 is arranged along cabinet body 1 left and right sides direction interval in proper order, and all along vertical extension, and the inlet wire side of the upper end of each inlet wire wiring end 21 is used for built on stilts equipment to connect, and the middle part of each inlet wire wiring end 21 is equipped with current transformer 22, and the outlet wire side of the lower extreme of each inlet wire wiring end 21 corresponds electrically conductive connection with each looks solid utmost point post 51 in the switch gas tank 5.
The bus air box 3 is internally provided with three-phase external main buses 31, 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 back directions of the cabinet body 1, the structures of the external main buses 31 are consistent, each external main bus 31 is formed by oppositely arranging two D-shaped buses 33, two ends of each external main bus 31 are respectively provided with an external environment-friendly inner cone 32, 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 tightly contacted with the arc-shaped side surfaces of the D-shaped buses 33, the end parts of the external environment-friendly inner cones 32 facing the external main buses 31 are provided with a splicing plate, when in connection, the splicing plates 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 inserting bolts, and after the bolts are connected to the D-shaped buses 33, the heads of the bolts sink into the arc-shaped side surfaces of the D-shaped buses 33, to avoid tip discharge.
The switch air box 5 is internally provided with a three-phase solid-sealed polar pole 51 and a three-phase isolating switch 52, the three-phase solid-sealed polar pole 51 and the three-phase isolating switch 52 extend vertically and are sequentially arranged at intervals along the front and back direction of the cabinet body 1, and each isolating switch 52 and each phase solid-sealed polar pole 51 are in one-to-one conductive connection on the left side of the solid-sealed polar pole 51. Each phase isolating switch comprises a closing static contact seat, a middle contact seat and a grounding static contact seat, the closing static contact seat at the upper end of each phase isolating switch 52 is correspondingly connected with each phase external main bus 31 one by one through an insulator penetrating through the horizontal partition plate 4, the grounding static contact seat at the lower end of each phase isolating switch 52 is provided with a grounding structure 10, the grounding structure 10 is connected with the cabinet wall of the cabinet body 1 and used for leading current to the outside of the cabinet body 1 when the phase isolating switch 52 is in a grounding state, so that the maintenance is convenient, and a transmission rod in the middle contact seat at the middle part of each phase isolating switch 52 is in transmission connection with an operating mechanism of the isolating switch in the mechanism chamber 6.
The lower side surface of the horizontal partition plate 4 is fixedly provided with a mounting seat 511, the upper end of each phase solid-sealed polar pole 51 is fixedly arranged on the mounting seat 511, the upper end of a moving contact pull rod in each phase solid-sealed polar pole 51 is in transmission connection through a transmission shaft on the mounting seat 511, and the wire inlet side of the lower end of each solid-sealed polar pole 51 is in conductive and electric connection with the wire outlet side of the lower end of each phase wire inlet wiring terminal 21 through a conductive rod 53.
Specifically, as shown in fig. 3, three conductive rods 53 are arranged corresponding to each phase of solid-sealed polar pole 51 and each phase of incoming line terminal 21, the outer peripheral surface of each conductive rod is a cylindrical surface, one end of each conductive rod 53, which is close to the incoming line terminal 21, is a spigot structure, and is connected with the incoming line terminal 21 through an environment-friendly inner cone 23, as shown in fig. 6, the environment-friendly inner cone 23 is integrally of a columnar structure, the upper end of the environment-friendly inner cone 23 is connected with the incoming line terminal 21, the lower end of the environment-friendly inner cone 23 is an environment-friendly inner cone connecting end 231 of the spigot, which is used for being matched with the spigot of the conductive rod 53, and the environment-friendly inner cone connecting end 231 is provided with bolt holes 232 which are fixedly connected with the conductive rods through plug bolts; one end of each conducting rod 53, which is close to the corresponding solid-sealed pole 51, is connected with the solid-sealed pole 51 through a clasping structure 8, as shown in fig. 4 and 5, the lower end of the solid-sealed pole 51 is fixedly provided with a columnar conducting structure 83, the clasping 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 and the special-shaped connecting column 81 are connected in an involutive manner to form a circular counter bore, so that the columnar conducting structures 83 at the bottom of the corresponding solid-sealed pole 51 are tightly inserted, the contact area is increased, the through-current capacity is improved, and the resistance and the heat productivity 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 column 51; the lower extreme of dysmorphism spliced pole 81 is equipped with supporting insulator 9, as shown in fig. 7, supporting insulator 9 includes spliced pole 91 and supporting part 92, and the upper end of spliced pole 91 is the tang for with the cooperation of the lower extreme tang of dysmorphism spliced pole 81, the lower extreme and the cabinet body 1 of supporting part 92 are connected, are used for supporting solid utmost point post 51 that seals.
The leftmost inlet wire wiring terminal 21 in the three-phase inlet wire wiring terminal 21 is in the same vertical plane with the three-phase solid-sealed polar pole 51, and the conducting rod 53 corresponding to the three-phase inlet wire terminal is L-shaped, the conducting rod 53 corresponding to the other two inlet wire wiring terminals 21 in the three conducting rods 53 comprises a vertical section, a first transverse section extending in the front-back direction and a second transverse section extending in the left-right direction, the first transverse section is located between the vertical section and the second transverse section, the vertical section is connected with the corresponding inlet wire wiring terminal 21, and the second transverse section is connected to the side face of the special-shaped connecting column 81.
The external main buses 31, the phase isolating switches 52 and the phase-sealed poles 51 are in one-to-one correspondence to form a three-phase main loop inside the incoming cabinet, each phase isolating switch 52 is provided with three working positions, 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 loop is connected, when the isolating switch 52 is in the switch-off position, the main loop is disconnected, and when the isolating switch 52 is in the ground connection 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 a 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 located at an isolating 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, and flows into an adjacent switch cabinet through the external main bus 31, when the isolating switch 52 is located at an open position, no current passes through a main loop, when the incoming line cabinet breaks down and needs to be overhauled, the isolating switch 52 is driven to the connected position, the potential in the incoming line cabinet is consistent with the ground, and the situation that the overhauls personnel are harmed by overlarge current 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 in the front-back direction of the cabinet body 1, and the arrangement directions are consistent, so that the external main bus 31 and the isolating switch 52 can be directly in conductive connection without being reversed by copper bars, the use of a large number of copper bars is eliminated, further the heat productivity between the external main bus 31 and the isolating switch 52 is reduced, the temperature rise is reduced, the lower end of the solid-sealed polar pole 51 is not connected by the copper bars any more, but is connected by the integrally bent conductive rod 53, the conductive connection points are reduced, further the resistance between the solid-sealed polar pole 51 and the incoming line wiring terminal 21 is reduced, and the heat productivity is further reduced.
the present embodiment is different from embodiment 1 in that: in embodiment 1, one end of the conductive rod 53 close to the embedded pole 51 is conductively connected to the embedded pole 51 through the clasping structure 8. In this embodiment, the lower end of the embedded pole is matched with a spigot at one end of the conducting rod close to the embedded pole, and is fixed by a pin.
the present embodiment is different from embodiment 1 in that: in embodiment 1, one end of the conductive rod 53, which is far away from the embedded pole 51, is connected with the incoming line terminal 21 in a manner of a spigot fit. And in this embodiment, the conducting rod is kept away from between the one end of solid utmost point post and the inlet wire wiring end through holding the structural connection tightly, and the lower extreme of inlet wire wiring end is equipped with column conductive structure, holds the structure tightly and includes dysmorphism spliced pole and semi-circular connecting block, and the upper end of dysmorphism spliced pole is equipped with semi-circular arc groove, and semi-circular connecting block forms the circular counter bore that supplies the column conductive structure to closely peg graft after closing with special-shaped spliced pole.
the present embodiment is different from embodiment 1 in that: in embodiment 1, each external main bus bar 31 is composed of two D-shaped bus bars 33 arranged at intervals, and the side of the external environmentally-friendly inner cone 32 facing the external main bus bar 31 is provided with a plugboard, which is inserted into the interval between the two D-shaped bus bars 33 and is connected with the two D-shaped bus bars 33 by bolts. In this embodiment, each external main bus is a cylindrical bus, the external environment-friendly inner cone is not provided with an inserting plate, and the external environment-friendly inner cone is directly sleeved at two ends of the external main bus and fixed with the cylindrical external main bus through bolts.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all changes in the structure equivalent to the content of the description and the drawings of the present invention should be considered as being included in the scope of the present invention.
Claims (10)
1. An inflatable overhead incoming line cabinet comprises a cabinet body (1), wherein a three-phase incoming line wiring terminal (21) which vertically penetrates through the top of the cabinet body (1) is arranged in the cabinet body (1), the three-phase incoming line wiring terminal (21) is used for being electrically connected with overhead high-voltage equipment, the three-phase incoming line wiring terminal (21) is arranged side by side in the left-right direction, a three-phase main loop is arranged in the cabinet body (1), the three-phase main loop comprises a solid-sealed polar pole (51), an isolating switch (52) and an external main bus (31), the incoming line side of the solid-sealed polar pole (51) of the three-phase main loop is correspondingly connected with the three-phase incoming line wiring terminal (21), the outgoing line side of the three-phase solid-sealed polar pole (51) is electrically connected with a middle contact seat of the isolating switch (52), a closing static contact seat of the isolating switch (52) is electrically connected with the external main bus (31), and the inflatable overhead incoming line cabinet is characterized in that the solid-sealed polar pole (51) and the isolating switch (52) of the three-sealed polar pole are arranged side by side in the front-back direction of the cabinet body (1), the external main buses (31) of the three-phase main loop are arranged in parallel in the front-back direction and extend in the left-right direction, and the wire inlet sides of the solid-sealed poles (51) are electrically connected with the corresponding wire inlet wiring terminals (21) through conductive rods (53) which are bent integrally.
2. The inflatable overhead incoming line cabinet according to claim 1, wherein a bus gas box and a switch gas box (5) are arranged in the cabinet body (1), each phase of external main bus (31) is arranged in the bus gas box, two ends of each phase of external main bus (31) are external ends, the external ends leak out of the cabinet body (1), and each phase of solid-sealed polar column (51) and each isolated switch (52) are arranged in the switch gas box (5).
3. The inflatable overhead incoming line cabinet according to claim 2, wherein the bus gas box and the switch gas box (5) are vertically separated by a horizontal partition plate (4), each phase solid-sealed polar pole (51) and each phase isolated switch (52) extend along the vertical direction, a closing static contact seat of each phase isolated switch (52) is installed 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 solid-sealed polar pole (51) is connected to the mounting seat (511), and a grounding static contact seat and a middle contact seat of each phase isolated switch (52) are fixedly connected to the 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 partitioned in the cabinet body (1), explosion-proof valves are respectively arranged between the pressure relief cavity (7) and the bus air box and the switch air box (5), a pressure relief opening is formed in the top of the pressure relief cavity (7), and the pressure relief cavity is located on the rear side of the bus air box and the switch air box (5).
5. The inflatable overhead inlet cabinet according to any of claims 1 to 4, wherein the cabinet body (1) is further provided with a mechanism chamber (6), the mechanism chamber (6) being located on a side of the main circuit facing away from the inlet terminal (21).
6. The inflatable overhead incoming line cabinet according to any one of claims 1 to 4, wherein one end of each conducting rod (53) is connected with the incoming line side of the corresponding solid-sealed pole (51) through a clasping structure (8), the incoming line side is a columnar conducting structure (83), the clasping structure (8) comprises a special-shaped connecting rod (81) and a semicircular connecting block (82), a semicircular arc groove is formed in the upper end of the special-shaped connecting rod (81), the semicircular connecting block (82) is folded at the semicircular arc groove to form a circular counter bore for the tight insertion of the conducting rod, the semicircular connecting block (82) and the special-shaped connecting rod (81) clasp the columnar incoming line side through a locking bolt which radially penetrates through the semicircular arc groove and the semicircular connecting block, and the end of the conducting rod (53) is connected with the special-shaped connecting rod (81).
7. The inflatable overhead incoming line cabinet according to claim 6, wherein the conductive rods (53) are laterally connected to the special-shaped connecting columns (81), a supporting insulator (9) is arranged at the lower end of each special-shaped connecting column (81), and the supporting insulator (9) is connected with the special-shaped connecting column (81).
8. The inflatable overhead incoming line cabinet according to claim 6, wherein one end of the conductive rod (53) far away from the embedded pole (51) is matched with the incoming line terminal (21) through a rabbet structure.
9. The inflatable overhead incoming line cabinet according to any one of claims 1 to 4, wherein external environment-friendly inner cones (32) are sleeved at two ends of each external main bus (31), each external main bus (31) is composed of two D-shaped buses (33) arranged at intervals, arc-shaped side surfaces of the two D-shaped buses (33) are arranged in a back-to-back manner, one ends of the external environment-friendly inner cones (32) facing the external main buses (31) are provided with plug boards, the plug boards are inserted into the intervals of the two D-shaped buses (33) and are connected with the two D-shaped buses (33) through bolts, the upper ends of closing stationary contact seats of corresponding isolating switches (52) are provided with insertion boards, and the insertion boards are inserted into the intervals of the two D-shaped buses (33) from bottom to top and are connected with the two D-shaped buses (33) through bolts.
10. The cabinet according to claim 9, wherein the holes for bolts to be inserted in the arc-shaped side of the D-shaped bus bar (33) are counter bored holes.
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 true CN114389193A (en) | 2022-04-22 |
| CN114389193B CN114389193B (en) | 2023-12-15 |
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| CN114389193B (en) | 2023-12-15 |
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