CN202210644U

CN202210644U - Box type fixed high-voltage switchgear

Info

Publication number: CN202210644U
Application number: CN201120305031XU
Authority: CN
Inventors: 张焕粉; 额尔敦宝力高; 曹寒滨; 翟远坤
Original assignee: Beijing Qingchang Power Technology Co Ltd
Current assignee: Beijing Qingchang Power Technology Co Ltd
Priority date: 2011-08-19
Filing date: 2011-08-19
Publication date: 2012-05-02
Anticipated expiration: 2021-08-19

Abstract

A box type fixed high-voltage switchgear belongs to the technical field of power transmission and distribution switch cabinets and comprises a box body and the like, wherein, the box body is a cubic box; the inner chamber of the box body is sequentially divided into an electronically-controlled device compartment, a vacuum circuit breaker compartment, a transmission compartment, a cable bin compartment and an isolating switch compartment from the top down by partition boards from the first to the sixth; the electrical control mechanism is installed in the electronically-controlled device compartment; the vacuum circuit breaker comprises three embedded poles which are installed in the vacuum circuit breaker compartment side by side in the length direction of the box body; the transmission device is installed in the transmission compartment; three isolating switch units and three external power in-out end devices are respectively installed in the isolating switch compartment and the cable bin compartment side by side in the width direction of the box body; and observation holes are formed on the box body. The high-voltage switchgear provided by the utility model has a small overall size and a concise layout, internal electric appliances have high safety in operation, the volume of the box body is greatly reduced, and the manufacturing cost is saved.

Description

Box fixed high-voltage switch cubicle

Technical field

The utility model relates to a kind of power transmission and distribution switch cubicle, refers to a kind of box fixed high-voltage switch cubicle especially.

Background technology

In existing manufacturing power transmission and distribution device product technology, be air-insulated power transmission and distribution device mostly at present, this device volume is big, and it is many to expend raw material, and it is big to take up room.

The utility model content

The purpose of the utility model is to provide a kind of box fixed high-voltage switch cubicle, and succinct, the inner electrical equipment safety in operation of the small and exquisite layout of its overall volume is high, the casing volume reduces to save the cost cost greatly.

To achieve these goals; The technical solution of the utility model is: a kind of box fixed high-voltage switch cubicle; Comprise vacuum circuit-breaker, three-phase isolation switch unit, electric control gear, transmission device and three external power supply in-out end devices; Wherein also comprise the cuboid casing that solid insulating material is processed, the inner chamber top of said casing is provided with orthogonal first and second dividing plate, and last, preceding, the left and right plate of said first and second dividing plate and casing is formed electric control gear at interval; Said electric control gear is installed in the said electric control gear interval; The inner chamber of said casing middle part is provided with the 3rd dividing plate of horizontal positioned, and the going up of said first and third dividing plate and casing, back, left and right plate are formed the vacuum circuit-breaker interval, and said vacuum circuit-breaker comprises three poles; Said the 3rd dividing plate is provided with the pole transmission case; Three said poles along the length direction of casing be arranged side by side in said vacuum circuit-breaker at interval in, three said poles all are installed on the said pole transmission case, the upper end of three said poles connects three busbars respectively and is flexible coupling; Three said busbars are flexible coupling and are connected with three busbars respectively; The left and right plate top of said casing is respectively equipped with three first and second wall bushings, and three first and second wall bushings are passed at the two ends of three said busbars respectively, and three said poles are connected with the three-phase isolation switch unit through three-phase solid insulation conductor respectively; The inner chamber bottom of said casing is respectively equipped with orthogonal the 5th, six dividing plates; Preceding, following, the left and right plate of said the 5th, six dividing plates and casing is formed the cable storehouse at interval, and said the 6th dividing plate is provided with the fracture that the three-phase isolation switch unit passes, three said external power supply in-out end devices be installed on said cable storehouse at interval in and be arranged side by side along the Width of casing; Following, back, the left and right plate of said the 3rd, six dividing plates and casing forms isolating switch at interval; Three said Disconnecting switch units are installed in the said isolating switch interval, and three said Disconnecting switch units are arranged along the Width of casing side by side, and preceding, the left and right plate of second, five dividing plates in the said casing and casing is formed transmission at interval; Said transmission device is installed in the said transmission at interval, and said casing is provided with observation window.

The box fixed high-voltage switch cubicle of the utility model; The header board of wherein said casing is from top to bottom connected to form by first, second and third door-plate successively; Said first door-plate is an electric control gear door at interval, and said second door-plate is a transmission door at interval, and said the 3rd door-plate is a cable storehouse door at interval; Said the 3rd door-plate is provided with several observation windows, is respectively equipped with several flabellum holes on the forward and backward plate of said casing.

The box fixed high-voltage switch cubicle of the utility model, wherein said isolating switch is placed with the PT power supply in the interval, and the plate surface is equipped with two parallel crossbeams in the left and right sides that are used to place the said Disconnecting switch unit of three-phase forward behind the inner chamber of said casing.

The box fixed high-voltage switch cubicle of the utility model; The back plate of wherein said casing is from top to bottom connected to form by fourth, fifth, six back shrouds successively; Said the 4th back shroud is a vacuum circuit-breaker back shroud at interval; The back plate of said casing is provided with several relief holes, is separately installed with the pressure release thin plate on each said relief hole.

The box fixed high-voltage switch cubicle of the utility model, wherein the said Disconnecting switch unit of three-phase is installed on respectively in the isolated insulation cover, and said insulating cover comprises the uncovered cuboid cover body in back that solid insulating material is processed; The upper plate of said cover body is provided with first shoulder hole of two-segment type up and down of convergent, in the last knothole chamber of said first shoulder hole first insulating case is installed, and said first insulating case is provided with second shoulder hole; The lower plate of said cover body is provided with first through hole, on said first through hole second insulating case is installed, and the center of said second insulating case is provided with three-section type the 3rd shoulder hole of convergent; The header board front surface middle part of said cover body is provided with projection, and said projection is provided with the sleeve pipe connecting hole, and said sleeve pipe connecting hole feeds the inner chamber of cover body; The 3rd insulated enclosure cover is installed in the said sleeve pipe connecting hole; Said the 3rd insulated enclosure is arranged with the 6th through hole that feeds mask body intracavity, and the left and right sidewall middle part of said mask body intracavity is arranged with a pair of first fin that extends along the cover body length direction, and the header board of said cover body is spirally connected fixing through bolt and two said crossbeams; Said Disconnecting switch unit comprises lengthening insulating bar, leading screw, conductive moving contact, room fixed contact, screw, isolation fixed contact, ground connection fixed contact, conductive plate and input terminal; The upper end of said lengthening insulating bar is connected with said transmission device, and said input terminal is fixed in the mask body intracavity upper surface of said isolated insulation cover, and said input terminal is provided with second and third through hole; The shape symmetry of said isolation fixed contact and ground connection fixed contact; The middle part of said isolation fixed contact and ground connection fixed contact is respectively equipped with fourth, fifth through hole, and the upper end of said isolation fixed contact is inserted in the said third through-hole, and said isolation fixed contact is fixedly connected with said input terminal; The lower end of said ground connection fixed contact is installed in the 3rd shoulder hole of said second insulating case; Said room fixed contact and conductive moving contact are hollow circular cylinder, and the outer surface of said room fixed contact is provided with annular the 5th fin, and said the 5th fin is spirally connected fixing through first fin of bolt and cover body; Between said the 5th, one fin conductive plate is installed; Said conductive plate is positioned at the 6th lead to the hole site place of said isolated insulation cover, and said conductive moving contact passes the inner chamber of room fixed contact, and the outer surface of said conductive moving contact is provided with the groove that connects its upper and lower end along axis direction; Be placed with slide bar in the said groove; It is fixing that said slide bar is connected with the room fixed contact, and the upper end of said leading screw is connected with the lower end of said lengthening insulating bar, and the lower end of said leading screw is inserted in the 3rd shoulder hole of second insulating case after passing the fifth hole of inner chamber, ground connection fixed contact of fourth hole, the conductive moving contact of second, one shoulder hole, the isolation fixed contact of said cover body successively; Be bolted with screw on the said leading screw; Said screw is between leading screw and conductive moving contact, and said screw and conductive moving contact are spirally connected, and is separately installed with bearing holder (housing, cover) nut and deep groove ball bearing between the upper and lower part of said first insulating case and the leading screw.

The box fixed high-voltage switch cubicle of the utility model; The header board upper and lower part of wherein said cover body is provided with one second observation window respectively; The outer surface of said cover body is provided with some ring-type second fins parallel with the forward and backward surface of cover body, is positioned on the front surface of cover body header board of said projection upper and lower to be respectively equipped with third and fourth fin.

The box fixed high-voltage switch cubicle of the utility model; Wherein each said external power supply in-out end device comprise respectively and connect paired cable, insulating sleeve, be flexible coupling, screw rod, cable sleeve and shutoff; Said insulating sleeve by the pipe of horizontal positioned be vertical at pipe below vertical tube one on the right side and constitute, the shape of cross section of vertical tube is rectangle and two shapes that semicircle surrounds that are positioned at rectangle right ends shape symmetry, the internal chamber wall right side of pipe is provided with first annular recess; Said pipe and vertical tube are solid insulating material and process; Said and connect the inner chamber that paired cable is installed on said vertical tube, said and connect the lower plate that said vertical tube and casing are passed in the lower end of paired cable, upper end said and that connect paired cable is connected with the lower end that is flexible coupling through screw bolt and nut; The inner chamber of said pipe is stretched in the said upper end that is flexible coupling; The right-hand member socket cable sleeve pipe of said pipe, the left end of said pipe is installed shutoff, and said screw rod vertically passes the said upper end that is flexible coupling; The right-hand member of said screw rod is connected with the left end of cable sleeve, and the left end of said screw rod is connected with the right-hand member of shutoff.

The box fixed high-voltage switch cubicle of the utility model; Wherein said cable sleeve is made up of connector and stepped stem; Said connector is made up of three first, second and third cylindrical bars that are flaring from right to left; The right side of said first cylindrical bar is provided with first thread groove that feeds second cylindrical bar, and the right side of said second cylindrical bar is provided with second annular recess, smooth transition between said second and third cylindrical bar; Said stepped stem is made up of three fourth, fifth, six cylindrical bars that are convergent from right to left; Said the 4th cylindrical bar is positioned at the left side of said three cylindrical bar, and the cross-sectional area of said the 4th cylindrical bar is greater than the cross-sectional area of three cylindrical bar, and the right side of said the 4th cylindrical bar is provided with the 3rd annular recess; Said the 5th cylindrical bar is plugged on said first annular recess; Said the 6th cylindrical bar is positioned at the inner chamber of said pipe, and the outer surface of said the 6th cylindrical bar is provided with some first circular fins that are parallel to each other, and the left end of said the 6th cylindrical bar is provided with second thread groove that is spirally connected with said screw rod right-hand member.

The box fixed high-voltage switch cubicle of the utility model; Wherein said shutoff is made up of three the 7th round platform bar, the 8th, nine cylindrical bars that are flaring from right to left; The right side of said the 7th round platform bar is provided with the 3rd thread groove that feeds the 8th cylindrical bar and be spirally connected with said screw rod left end; Said the 8th cylindrical bar is plugged in the inner chamber left end of said pipe, and the right side of said the 8th cylindrical bar is provided with Fourth Ring shape groove.

The box fixed high-voltage switch cubicle of the utility model; One second nut is spirally connected in the middle part of the outer surface of wherein said screw rod; On the screw rod between said second nut and said is flexible coupling plain washer and spring washer are installed; The said upper right that is flexible coupling is against on the left side of said the 6th cylindrical bar; The said lower end that is flexible coupling is inserted in and connects the upper end between the paired cable, is positioned at said and connects on the shank of bolt on paired cable right side second plain washer is installed, said and connect on the shank of bolt between paired cable left side and the nut the 3rd plain washer and second spring washer are installed.

After adopting such scheme; The box fixed high-voltage switch cubicle of the utility model is installed on electric equipments such as vacuum circuit-breaker, three-phase isolation switch unit, transmission device, electric control gear and external power supply in-out end device in the casing, and cabinets cavity is divided into five intervals, and electric control gear is installed in the electric control gear interval at position, front side, cabinets cavity top; Vacuum circuit-breaker is installed in the vacuum circuit-breaker interval at rear side position, cabinets cavity top; Advance cable storehouse that external power supply in-out end device is installed on cabinets cavity lower front side position at interval in, the isolating switch that the three-phase isolation switch unit is installed on rear side position, cabinets cavity bottom at interval in, transmission device is installed in the transmission at interval in cabinets cavity centre position; In limited space with various electric equipment rational deployment in casing; The volume of casing dwindles greatly, saves cost, electric control gear is designed to integral type is installed in the automatically controlled interval; Reduced the height of casing greatly; Three poles of circuit breaker are adopted all to adopt along the casing Width along casing length direction parallel arrangement mode, with three external power supply in-out end devices and three-phase isolation switch unit be arranged in parallel, saved space joint structure greatly, the volume of whole switch cubicle is dwindled greatly; The topology layout that saves this product is simple; Can observe the ruuning situation of electrical equipment in the casing through the observation window on the casing, circuit breaker adopts solid insulating material to connect with being connected of Disconnecting switch unit, operational reliability and fail safe that these designs have all improved switch cubicle.

Description of drawings

Fig. 1 is the stereogram (removing the casing right side, back plate) of the box fixed high-voltage switch cubicle of the utility model;

Fig. 2 is the right view (removing the casing right side, back plate) of the box fixed high-voltage switch cubicle of the utility model;

Fig. 3 is the rearview (removing the casing right side, back plate) of the box fixed high-voltage switch cubicle of the utility model;

Fig. 4 is the casing front view (removing the casing right side, back plate) of the box fixed high-voltage switch cubicle of the utility model;

Fig. 5 is the casing front view of the box fixed high-voltage switch cubicle of the utility model;

Fig. 6 is the casing rearview of the box fixed high-voltage switch cubicle of the utility model;

Fig. 7 is the casing left view of the box fixed high-voltage switch cubicle of the utility model;

Fig. 8 is the casing right view of the box fixed high-voltage switch cubicle of the utility model;

Fig. 9 is external power supply in-out end device of the utility model and the sectional structure sketch map between the Disconnecting switch unit;

Figure 10 is the perspective view of insulating sleeve of the external power supply in-out end device of the utility model;

Figure 11 is the stereogram of the isolated insulation cover of the utility model;

Figure 12 is the rearview of the isolated insulation cover of the utility model;

Figure 13 is the left view of the isolated insulation cover of the utility model;

Figure 14 is that the Disconnecting switch unit of the utility model is installed on the cutaway view in the isolated insulation.

Below in conjunction with accompanying drawing, the utility model is done further explanation through embodiment.

Embodiment

See also Fig. 1 to shown in Figure 3, the box fixed high-voltage switch cubicle of the utility model comprises 1 casing 5 that vacuum circuit-breaker 1, three-phase isolation switch unit 2, electric control gear 3, transmission device, three external power supply in-out end devices 4 and solid insulating material are processed.

Casing 5 is a cuboid box; The inner chamber top of casing 5 is connected with orthogonal first dividing plate 51 and second partition 52 through bolt; First dividing plate 51, second partition 52 and last, preceding, the left and right plate of casing 5 are formed electric control gear at interval 6, and electrical control mechanism 3 is installed in the electric control gear interval 6; The inner chamber middle part of casing 5 is connected with the 3rd dividing plate 53 of horizontal positioned through bolt; The going up of first dividing plate 51, the 3rd dividing plate 53 and casing 5, back, left and right plate are formed vacuum circuit-breaker at interval 7; Vacuum circuit-breaker 1 comprises three poles 11; 15, three poles 11 of pole transmission case are installed on the 3rd dividing plate 53 are arranged side by side in vacuum circuit-breaker at interval in 7 along the length direction of casing 5, three poles 11 all are installed on the pole transmission case 15; The upper end of three poles 11 connects three busbars, 12, three busbars that are flexible coupling respectively and is flexible coupling and 12 is connected with three busbars 13 respectively.

Extremely shown in Figure 8 in conjunction with Fig. 5; The left and right plate top of casing 5 is processed with three first wall bushings 55 and three second wall bushings 56 respectively; The two ends of three busbars 13 are passed one first wall bushing 55 and one second wall bushing 56 respectively; So that be connected with other unit switch cabinet, three poles 11 connect an end of three-phase solid insulation conductor 14 respectively.

In conjunction with shown in Figure 4; The inner chamber bottom of casing 5 connects orthogonal the 5th dividing plate 57 and the 6th dividing plate 58 through bolt respectively; The 5th dividing plate 57, the 6th dividing plate 58 are formed interval, cable storehouse 8 with preceding, following, the left and right plate of casing 5; Three external power supply in-out end devices 4 are installed on the cable storehouse and are arranged side by side in 8 and along the Width of casing 5 at interval, are processed with fracture 581 on the 6th dividing plate 58, and fracture 581 is divided into upper and lower two parts with the 6th dividing plate 58; The setting of fracture 581 is in order to let an end of three-phase isolation switch unit 2 pass, so that be connected with external power supply in-out end device 4.

In conjunction with Fig. 9 and shown in Figure 10; Each external power supply in-out end device 4 comprise respectively and connect paired cable 41, insulating sleeve 42, be flexible coupling 43, screw rod 44, cable sleeve 45 and shutoff 46; Insulating sleeve 42 by the pipe of horizontal positioned 421 be vertical at pipe 421 belows vertical tube 422 one on the right side and constitute; The shape of cross section of vertical tube 422 is rectangle and two shapes that semicircle surrounds that are positioned at rectangle right ends shape symmetry; The internal chamber wall right side of pipe 421 is processed with first annular recess 4211, and pipe 4211 is solid insulating material with vertical tube 422 and processes, and connects the inner chamber that paired cable 41 is installed on vertical tube 422; And the lower plate of vertical tube 422 and casing 5 is passed in the lower end that connects paired cable 41; And the upper end that connects paired cable 41 is connected with 43 the lower end of being flexible coupling through bolt 401 and nut 402, and the inner chamber of pipe 421, the right-hand member socket cable sleeve pipe 45 of pipe 421 are stretched in 43 the upper end of being flexible coupling; Cable sleeve 45 is made up of connector 451 and stepped stem 452; Connector 451 is made up of three first cylindrical bar 4511, second cylindrical bar 4512 and three cylindrical bars 4513 that are flaring from right to left, and the right side that the right side of first cylindrical bar 4511 is processed with first thread groove, 45111, the second cylindrical bars 4512 that feed second cylindrical bar 4512 is processed with second annular recess 45121; Smooth transition between second cylindrical bar 4512 and the three cylindrical bar 4513; Stepped stem 452 is made up of three the 4th cylindrical bar 4521, the 5th cylindrical bar 4522 and the 6th cylindrical bars 4523 that are convergent from right to left, and the 4th cylindrical bar 4521 is positioned at the left side of three cylindrical bar 4513, and the cross-sectional area of the 4th cylindrical bar 4521 is greater than the cross-sectional area of three cylindrical bar 4513; The right side of the 4th cylindrical bar 4521 is processed with the 3rd annular recess 45211; The 5th cylindrical bar 4522 is plugged on first annular recess 4211, and the 6th cylindrical bar 4523 is positioned at the inner chamber of pipe 421, and the outer surface of the 6th cylindrical bar 4523 is processed with some first circular fins 45231 that are parallel to each other; The left end of the 6th cylindrical bar 4523 is processed with second thread groove 45232 that is spirally connected with screw rod 44 left ends, and screw rod 44 is spirally connected with the 6th cylindrical tube 4523 after vertically passing 43 the upper end of being flexible coupling.Shutoff 46 is made up of three the 7th round platform bar 461, the 8th cylindrical bar 462 and the 9th cylindrical bars 463 that are flaring from right to left; The right side of the 7th round platform bar 461 is processed with the 3rd thread groove 4611 that feeds the 8th cylindrical bar 462 and be spirally connected with screw rod 44 left ends; The 7th round platform bar 461 is spirally connected with the left end of screw rod 44; The 8th cylindrical bar 462 is plugged in the inner chamber left end of pipe 421, and the right side of the 8th cylindrical bar 462 is processed with Fourth Ring shape groove 4621.The right side of the 9th cylindrical bar 463 is against on the left side of pipe 421.Second nut 47 is spirally connected in the middle part of the outer surface of screw rod 44; On second nut 47 and the screw rod 44 between 43 of being flexible coupling, plain washer 48 and spring washer 49 are installed, plain washer 48 and spring washer 49 be set be for guarantee between the cable sleeve 45 and second nut 47 be flexible coupling 43 clamped.43 the upper right of being flexible coupling is against on the left side of the 6th cylindrical bar 4523; Be flexible coupling 43 lower end is inserted in and connects the upper end between the paired cable 43; Be positioned at and connect on bolt 401 bars on paired cable 43 right sides second plain washer 403 is installed, and connect the 3rd plain washer 404 and second spring washer 405 be installed on bolt 401 bars between paired cable 43 left sides and the nut 402.It is to utilize its cushioning effect to guarantee the tightness of bolt 401 and nut 402 that the 3rd plain washer 404 and second spring washer 405 are set.Process first annular recess 4211 at the inner chamber right-hand member of the pipe 421 of insulating sleeve 42, on the right side of second cylindrical bar 4512 processing second annular recess 45121, to process the 3rd annular recess 45211 in the right side of the 4th cylindrical bar 4521 and process Fourth Ring shape groove 4621 in the right side of shutoff 46 all be in order to improve the creepage distance of external power supply in-out end device 4; Can improve electric property like this, and improve the safety in operation of electrical equipment.

In conjunction with Fig. 1, Fig. 2 and shown in Figure 4; The 3rd dividing plate 53, the 6th dividing plate 58 form isolating switch interval 9 with following, back, the left and right plate of casing 5; Three Disconnecting switch units 2 all are installed in this isolating switch interval 9 with PT power supply 20, and the back plate surface of casing 5 is connected with two crossbeams 40 that the left and right sides is parallel through bolt.Three Disconnecting switch units 2 are arranged side by side along the Width of casing 5; The lower end of three-phase solid insulation conductor 14 is passed the 3rd dividing plate 53 backs respectively and is got in the isolating switch interval 9; To shown in Figure 14, three-phase isolation switch unit 2 is installed on respectively in the isolated insulation cover in conjunction with Figure 11, and insulating cover comprises the uncovered cuboid cover body 20 in back that solid insulating material is processed; The upper plate of cover body 20 is processed with first shoulder hole 201 of two-segment type up and down of convergent; Be equipped with in the last knothole chamber of first shoulder hole 201 on first insulating case, 202, the first insulating cases 202 and be processed with second shoulder hole 2021, the lower plate of cover body 20 is processed with first through hole 203; Second insulating case 204 is installed on first through hole 203; The center of second insulating case 204 is processed with three-section type the 3rd shoulder hole 2041 of convergent, and the header board front surface middle part of cover body 20 is processed with projection 205, is processed with sleeve pipe connecting hole 2051 on the projection 205; Sleeve pipe connecting hole 2051 feeds the inner chamber of cover body 20; Install in the sleeve pipe connecting hole 2051 on the 3rd insulated enclosures cover 206, the three insulated enclosures cover 206 and be processed with cylindrical the 6th through holes 2061 of three grades of ladders that feed cover body 20 inner chambers, be positioned on the front surface of cover body 20 header boards of projection 205 upper and lowers and be processed with the 3rd fin 2010 and the 4th fin 2011 respectively.The header board upper and lower part of cover body 20 is processed with one second observation window 208 respectively; The outer surface of cover body 20 is welded with some ring-type second fins 209 parallel with cover body 20 forward and backward surfaces; The left and right sidewall middle part of cover body 20 inner chambers is symmetrily processed with a pair of first fin 207 that extends along cover body 20 length directions, and cover body 20 is positioned on two crossbeams 40.The projection 205 of cover body 20 passes fracture 581.Disconnecting switch unit 2 comprises lengthening insulating bar 21, leading screw 22, conductive moving contact 23, room fixed contact 24, screw 25, isolates fixed contact 26, ground connection fixed contact 27, conductive plate 28 and input terminal 29; Input terminal 29 is fixed in the cover body 20 inner chamber upper surfaces of isolated insulation cover; Be processed with second through hole 291 and third through-hole 292 on the input terminal 29; The lower end of three-phase solid insulation conductor 14 input terminal 29 through bolt and each Disconnecting switch unit 2 respectively is spirally connected fixingly, and each bolt passes second through hole 291 of input terminal 29 respectively.The shape symmetry of isolating fixed contact 26 and ground connection fixed contact 27; The middle part that isolates fixed contact 26 and ground connection fixed contact 27 is processed with fourth hole 261 and fifth hole 271 respectively; The upper end that isolates fixed contact 26 is inserted in the third through-hole 292; Isolating fixed contact 26 is fixedly connected with input terminal 29; The lower end of ground connection fixed contact 27 is installed in the 3rd shoulder hole 2041 of second insulating case 204, and room fixed contact 24 and conductive moving contact 23 are hollow circular cylinder, and the outer surface of room fixed contact 24 is processed with annular the 5th fin 241; The 5th fin 241 is spirally connected fixing through first fin 207 of bolt and cover body 20; Between the 5th fin 241 and first fin 207 conductive plate 28 is installed, conductive plate 28 is positioned at the 6th through hole 2061 positions of isolated insulation cover, and first cylindrical bar 4511 of the cable sleeve 45 of external power supply in-out end device 4 stretches into the 6th through hole 2061 and is connected fixing through screw with conductive plate 28.Conductive moving contact 23 passes the inner chamber of room fixed contact 24; The outer surface of conductive moving contact 23 is processed with the groove 231 that connects its upper and lower end along axis direction; Be placed with slide bar 232 in the groove 231; Slide bar 232 is connected fixing with room fixed contact 24 through bolt; The upper end of leading screw 22 is plugged on the lower end of lengthening insulating bar 21; The lower end of leading screw 22 is inserted in the 3rd shoulder hole 2041 of second insulating case 204 after passing the fifth hole 271 of inner chamber, ground connection fixed contact 27 of second shoulder hole 2021 and first shoulder hole 201 of cover body 20, the fourth hole 261 of isolating fixed contact 26, conductive moving contact 23 successively; The screw 25 that is spirally connected on the leading screw 22, screw 25 are between leading screw 22 and conductive moving contact 23, and screw 25 is spirally connected with conductive moving contact 23; Be separately installed with bearing holder (housing, cover) nut 221 and deep groove ball bearing 222 between the upper and lower part of first insulating case 202 and the leading screw 22, on the upper end of deep groove ball bearing 222 and the leading screw 22 between the deep groove ball bearing 222 and first insulating case 202, be separately installed with a circlip 223.

Preceding, the left and right plate of second partition 52, the 5th dividing plate 57 and the casing 5 in the casing 5 is formed transmission interval 10, and transmission device is installed in the transmission interval 10, and the isolation gear driver of transmission device is connected with the upper end of lengthening insulating bar 21.

The header board of casing 5 is from top to bottom connected to form by first door-plate 511, second door-plate 512 and the 3rd door-plate 513 successively; First door-plate 511 is electric control gear 6 a door at interval; Second door-plate 512 is the door at transmission interval 10, and the 3rd door-plate 513 is cable storehouse 8 a door at interval, is processed with two observation windows 514 on the 3rd door-plate 513; Be convenient to observe the working condition of the three-phase isolation switch unit 2 in the casing like this, guarantee the stable operation of inner electrical equipment.Be processed with several flabellum holes 515 on the forward and backward plate of casing 5 respectively, be convenient to inner heat radiation of electrical apparatus.The back plate of casing 5 is from top to bottom connected to form by the 4th back shroud 516, the 5th back shroud 517 and the 8th back shroud 518 successively, and vacuum circuit-breaker 7 back shroud at interval is the 4th back shroud 516.Be processed with several relief holes on the back plate of casing 5, pressure release thin plate 30 is installed on the relief hole, being provided with like this is for the explosion time that acquires a certain degree when casing 5 interior pressure, can pressure release thin plate 30 broken through and internal pressure is released.

During use, external power supply in-out end device 4 and connect paired cable 41 and insert power supply from casing is outside, and connect paired cable 41 and 43 be connected with being flexible coupling, be flexible coupling 43 and cable sleeve 45 conductings, cable sleeve 45 is connected with conductive moving contact 23 through conductive plate 28.Transmission device is through the man-operating mechanism operation element, and when transmission device drove lengthening insulating bar 21 rotations of Disconnecting switch unit 2, lengthening insulating bar 21 drove leading screws 22 and rotates; Because it is fixing that room fixed contact 24 and the slide bar 232 and first fin 207 are spirally connected, and that screw 25 and conductive moving contact 23 are spirally connected is fixing, like this when leading screw 22 rotations; Drive screw 25 backward rotation; Because conductive moving contact 23 is stopped by slide bar 232 to rotate, therefore can only move up and down along groove 231, move upward and isolate fixed contact 26 when contacting when conductive moving contact 23 like this; "on" position for Disconnecting switch unit 2; Be line conduction, this moment, three poles 11 of circuit breaker 1 closed a floodgate under the control panel control of electric control gear 3, and the pole 11 of circuit breaker 1 is respectively through three solid insulation conductors 14 and Disconnecting switch unit 2 conductive communication; Electricity is flowed to three busbars, 12 and three busbars 13 that are flexible coupling, be connected with other unit cabinet again by three busbars 13; Otherwise when external power supply in-out end device 4 and connect paired cable 41 from casing 5 outside casing during out-put supply; The course of work and top just in time reverse; It remains and passes through the work of man-operating mechanism operating and driving device earlier, makes transmission device drive three-phase isolation switch unit 2 and closes a floodgate, and three poles of electric control gear 3 controls 11 close a floodgate; Power supply inserts from three busbars 13; Send into three-phase isolation switch unit 2 through be flexible coupling 12, three poles 11 and three solid insulation conductors 14 of three busbars, after three-phase isolation switch unit 2 gets into external power supply in-out end devices 4, at last with electricity from and connect paired cable 41 and send into casing 5 outsides.When the work of man-operating mechanism control transmission device; When driving leading screw 22 backward rotation, conductive moving contact 23 moves down along leading screw 22, when contacting with ground connection fixed contact 27; Be ground state; This moment, three poles 11 of electric control gear 3 control circuit breakers 1 were in combined floodgate or gate-dividing state, and this state can carry out the inside electrical equipment of switch cubicle down to be installed, safe and convenient; When the work of man-operating mechanism control transmission device, when making conductive moving contact 23 be in the inner chamber of room fixed contact 24, be isolation, this moment, electric control gear 3 control circuit breakers 1 were in gate-dividing state.

The box fixed high-voltage switch cubicle of the utility model is installed on electric equipments such as vacuum circuit-breaker 1, three-phase isolation switch unit 2, transmission device, electrical control mechanism 3 and external power supply in-out end device 4 in the casing 5; Casing 5 inner chambers are divided into five intervals; Electrical control mechanism 3 is installed in the electric control gear interval 6 at position, front side, casing 5 inner chamber top; Vacuum circuit-breaker 1 is installed in the vacuum circuit-breaker interval 7 at rear side position, casing 5 inner chamber top; External power supply in-out end device 4 is installed in the interval, cable storehouse 8 at casing 5 inner chamber lower front side positions; Three-phase isolation switch unit 2 is installed in the isolating switch interval 9 at rear side position, casing 5 inner chamber bottom, and transmission device is installed in the transmission interval 10 in casing 5 inner chamber centre positions.The volume of the utility model switch cubicle is dwindled greatly; The layout advantages of simple; Single-phase saving cost; Can observe the ruuning situation of electrical equipment in the casing 5 through the observation window on the casing 5 514, circuit breaker 1 adopts solid insulating material to connect with being connected of Disconnecting switch unit 2, and these design operational reliability and the fail safe that has all improved switch cubicle.Weight saving during simultaneously single-phase installation is installed more convenient.The utility model external power supply in-out end device 4 adopts two cables and connects cable; Save the space so more; Improved simultaneously the equipment loaded current greatly; The working condition of three-phase isolation switch unit 2 can conveniently observe from the observation window 514 of casing 5 and second observation window 208 of isolated insulation cover, reduced Disconnecting switch unit 2 isolation fractures in the isolated insulation cover accidents happened rate.

The above embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that the common engineers and technicians in this area make the technical scheme of the utility model all should fall in the protection range that claims of the utility model confirm.

Claims

1. a box fixed high-voltage switch cubicle comprises vacuum circuit-breaker (1), three-phase isolation switch unit (2), electric control gear (3), transmission device and three external power supply in-out end devices (4), it is characterized in that: also comprise the cuboid casing (5) that solid insulating material is processed; The inner chamber top of said casing (5) is provided with orthogonal first and second dividing plate (51; 52), said first and second dividing plate (51,52) is formed electric control gear (6) at interval with last, preceding, the left and right plate of casing (5); Said electric control gear (3) is installed in the said electric control gear interval (6); The inner chamber of said casing (5) middle part is provided with the 3rd dividing plate (53) of horizontal positioned, and the going up of said first and third dividing plate (51,53) and casing (5), back, left and right plate are formed vacuum circuit-breaker (7) at interval; Said vacuum circuit-breaker (1) comprises three poles (11); Said the 3rd dividing plate (53) is provided with pole transmission case (15), and three said poles (11) are arranged side by side in said vacuum circuit-breaker interval (7) along the length direction of casing (5), and three said poles (11) all are installed on the said pole transmission case (15); The upper end of three said poles (11) connects three busbars be flexible coupling (12) respectively; Three said busbars be flexible coupling (12) be connected with three busbars (13) respectively, the left and right plate top of said casing (5) is respectively equipped with three first and second wall bushings (55,56); Three first and second wall bushings (55 are passed at the two ends of three said busbars (13) respectively; 56), three said poles (11) are connected with three-phase isolation switch unit (2) through three-phase solid insulation conductor (14) respectively, and the inner chamber bottom of said casing (5) is respectively equipped with orthogonal the 5th, six dividing plates (57; 58); Said the 5th, six dividing plates (57,58) are formed cable storehouse (8) at interval with preceding, following, the left and right plate of casing (5), and said the 6th dividing plate (58) is provided with the fracture (581) that passes three-phase isolation switch unit (2); Three said external power supply in-out end devices (4) are installed on said cable storehouse and are arranged side by side in (8) and along the Width of casing (5) at interval; Said the 3rd, six dividing plates (53,58) form isolating switch (9) at interval with following, back, the left and right plate of casing (5), and three said Disconnecting switch units (2) are installed in the said isolating switch interval (9); Three said Disconnecting switch units (2) are arranged along the Width of casing (5) side by side; Preceding, the left and right plate of second, five dividing plates in the said casing (5) and casing (5) is formed transmission (10) at interval, and said transmission device is installed in the said transmission interval (10), and said casing (5) is provided with observation window.

2. box fixed high-voltage switch cubicle as claimed in claim 1; It is characterized in that: the header board of said casing (5) is from top to bottom successively by first, second and third door-plate (511; 512,513) connect to form, said first door-plate (511) is the electric control gear door of (6) at interval; Said second door-plate (512) is the door at transmission interval (10); Said the 3rd door-plate (513) is the cable storehouse door of (8) at interval, and said the 3rd door-plate (513) is provided with several observation windows (514), is respectively equipped with several flabellum holes (515) on the forward and backward plate of said casing (5).

3. according to claim 1 or claim 2 box fixed high-voltage switch cubicle; It is characterized in that: said isolating switch is placed with PT power supply (20) in (9) at interval, and the plate surface is equipped with two parallel crossbeams (40) in the left and right sides that are used to place the said Disconnecting switch unit of three-phase (2) forward behind the inner chamber of said casing (5).

4. box fixed high-voltage switch cubicle as claimed in claim 3; It is characterized in that: the back plate of said casing (5) is from top to bottom successively by fourth, fifth, six back shrouds (516; 517,518) connect to form, said the 4th back shroud (516) is the vacuum circuit-breaker back shroud of (7) at interval; The back plate of said casing (5) is provided with several relief holes, is separately installed with pressure release thin plate (30) on each said relief hole.

5. box fixed high-voltage switch cubicle as claimed in claim 4 is characterized in that: the said Disconnecting switch unit of three-phase (2) is installed on respectively in the isolated insulation cover, and said insulating cover comprises the uncovered cuboid cover body (20) in back that solid insulating material is processed; The upper plate of said cover body (20) is provided with first shoulder hole of two-segment type up and down (201) of convergent, in the last knothole chamber of said first shoulder hole (201) first insulating case (202) is installed, and said first insulating case (202) is provided with second shoulder hole (2021); The lower plate of said cover body (20) is provided with first through hole (203), and second insulating case (204) is installed on said first through hole (203), and the center of said second insulating case (204) is provided with three-section type the 3rd shoulder hole (2041) of convergent; The header board front surface middle part of said cover body (20) is provided with projection (205), and said projection (205) is provided with sleeve pipe connecting hole (2051), and said sleeve pipe connecting hole (2051) feeds the inner chamber of cover body (20); The 3rd insulated enclosure cover (206) is installed in the said sleeve pipe connecting hole (2051), and said the 3rd insulated enclosure cover (206) is provided with the 6th through hole (2061) that feeds cover body (20) inner chamber, and the left and right sidewall middle part of said cover body (20) inner chamber is arranged with a pair of first fin (207) that extends along cover body (20) length direction; The header board of said cover body (20) is spirally connected fixing through bolt and two said crossbeams (40), said Disconnecting switch unit (2) comprises lengthening insulating bar (21), leading screw (22), conductive moving contact (23), room fixed contact (24), screw (25), isolates fixed contact (26), ground connection fixed contact (27), conductive plate (28) and input terminal (29), and the upper end of said lengthening insulating bar (21) is connected with said transmission device; Said input terminal (29) is fixed in cover body (20) the inner chamber upper surface of said isolated insulation cover, and said input terminal (29) is provided with second and third through hole (291,292); The shape symmetry of said isolation fixed contact (26) and ground connection fixed contact (27), the middle part of said isolation fixed contact (26) and ground connection fixed contact (27) is respectively equipped with fourth, fifth through hole (261,271); The upper end of said isolation fixed contact (26) is inserted in the said third through-hole (292); Said isolation fixed contact (26) is fixedly connected with said input terminal (29), and the lower end of said ground connection fixed contact (27) is installed in the 3rd shoulder hole (2041) of said second insulating case (204), and said room fixed contact (24) and conductive moving contact (23) are hollow circular cylinder; The outer surface of said room fixed contact (24) is provided with annular the 5th fin (241); First fin (207) of said the 5th fin (241) through bolt and cover body (20) is spirally connected fixing, between said the 5th, one fin (241,207) conductive plate (28) is installed; Said conductive plate (28) is positioned at the 6th through hole (2061) position of said isolated insulation cover; Said conductive moving contact (23) passes the inner chamber of room fixed contact (24), and the outer surface of said conductive moving contact (23) is provided with the groove (231) that connects its upper and lower end along axis direction, is placed with slide bar (232) in the said groove (231); Said slide bar (232) is connected fixing with room fixed contact (24); The upper end of said leading screw (22) is connected with the lower end of said lengthening insulating bar (21), and the lower end of said leading screw (22) is inserted in the 3rd shoulder hole (2041) of second insulating case (204) after passing the fifth hole (271) of inner chamber, ground connection fixed contact (27) of second, one shoulder hole (2021,201) of said cover body (20), the fourth hole (261) of isolating fixed contact (26), conductive moving contact (23) successively; Be bolted with screw (25) on the said leading screw (22); Said screw (25) is positioned between leading screw (22) and the conductive moving contact (23), and said screw (25) is spirally connected with conductive moving contact (23), is separately installed with bearing holder (housing, cover) nut (221) and deep groove ball bearing (222) between the upper and lower part of said first insulating case (202) and the leading screw (22).

6. box fixed high-voltage switch cubicle as claimed in claim 5; It is characterized in that: the header board upper and lower part of said cover body (20) is provided with one second observation window (208) respectively; The outer surface of said cover body (20) is provided with some ring-type second fins (209) parallel with the forward and backward surface of cover body (20); Be positioned on the front surface of cover body (20) header board of said projection (205) upper and lower and be respectively equipped with third and fourth fin (2010,2011).

7. box fixed high-voltage switch cubicle as claimed in claim 6; It is characterized in that: each said external power supply in-out end device (4) comprises respectively and connects paired cable (41), insulating sleeve (42), be flexible coupling (43), screw rod (44), cable sleeve (45) and shutoff (46); Said insulating sleeve (42) is by the pipe (421) of horizontal positioned and be vertical at pipe (421) below vertical tube (422) one on the right side and constitute; The shape of cross section of vertical tube (422) is rectangle and two shapes that semicircle surrounds that are positioned at rectangle right ends shape symmetry; The internal chamber wall right side of pipe (421) is provided with first annular recess (4211); Said pipe (421) and vertical tube (422) are solid insulating material and process; Said and connect the inner chamber that paired cable (41) is installed on said vertical tube (422), said and connect the lower plate that said vertical tube (422) and casing (5) are passed in the lower end of paired cable (41), upper end said and that connect paired cable (41) is connected with the lower end of nut (402) be flexible coupling (43) through bolt (401); The inner chamber of said pipe (421) is stretched in the said upper end that is flexible coupling (43); The right-hand member socket cable sleeve pipe (45) of said pipe (421), the left end of said pipe (421) is installed shutoff (46), and said screw rod (44) vertically passes the upper end of said be flexible coupling (43); The right-hand member of said screw rod (44) is connected with the left end of cable sleeve (45), and the left end of said screw rod (44) is connected with the right-hand member of shutoff (46).

8. box fixed high-voltage switch cubicle as claimed in claim 7; It is characterized in that: said cable sleeve (45) is made up of connector (451) and stepped stem (452); Said connector (451) is made up of three first, second and third cylindrical bars (4511,4512,4513) that are flaring from right to left; The right side of said first cylindrical bar (4511) is provided with first thread groove (45111) that feeds second cylindrical bar; The right side of said second cylindrical bar (4512) is provided with second annular recess (45121), smooth transition between said second and third cylindrical bar (4512,4513); Said stepped stem (452) is by three fourth, fifth, six cylindrical bars (4521 that are convergent from right to left; 4522,4523) constitute, said the 4th cylindrical bar (4521) is positioned at the left side of said three cylindrical bar (4513); The cross-sectional area of said the 4th cylindrical bar (4521) is greater than the cross-sectional area of three cylindrical bar (4513); The right side of said the 4th cylindrical bar (4521) is provided with the 3rd annular recess (45211), and said the 5th cylindrical bar (4522) is plugged on said first annular recess (4211), and said the 6th cylindrical bar (4523) is positioned at the inner chamber of said pipe (421); The outer surface of said the 6th cylindrical bar (4523) is provided with some first circular fins (45231) that are parallel to each other, and the left end of said the 6th cylindrical bar (4523) is provided with second thread groove (45232) that is spirally connected with said screw rod (44) right-hand member.

9. box fixed high-voltage switch cubicle as claimed in claim 8; It is characterized in that: said shutoff (46) is by three the 7th round platform bar, the 8th, nine cylindrical bars (461 that are flaring from right to left; 462; 463) constitute; The right side of said the 7th round platform bar (461) is provided with the 3rd thread groove (4611) that feeds the 8th cylindrical bar (462) and be spirally connected with said screw rod (44) left end, and said the 8th cylindrical bar (462) is plugged in the inner chamber left end of said pipe (421), and the right side of said the 8th cylindrical bar (462) is provided with Fourth Ring shape groove (4621).

10. box fixed high-voltage switch cubicle as claimed in claim 9; It is characterized in that: one second nut (47) is spirally connected in the middle part of the outer surface of said screw rod (44); Be positioned on said second nut (47) and the said screw rod (44) that is flexible coupling between (43) plain washer (48) and spring washer (49) are installed; The said upper right that is flexible coupling (43) is against on the left side of said the 6th cylindrical bar (4523); The said lower end that is flexible coupling (43) is inserted in and connects the upper end between the paired cable (43); Be positioned at said and connect on bolt (401) bar on paired cable (43) right side second plain washer (403) is installed, be positioned at said and connect on bolt (401) bar between paired cable (43) left side and the nut (402) the 3rd plain washer (404) and second spring washer (405) are installed.