CN218334826U - High-voltage direct-current metal-enclosed switch power distribution cabinet - Google Patents

Abstract

The utility model relates to a high voltage direct current metal enclosed switch power distribution cabinet, which comprises a power distribution cabinet body, a mechanism area, a cable area, a breaker area, a high voltage capacitance area, a low voltage capacitance area and an instrument area, wherein the mechanism area, the cable area, the breaker area, the high voltage capacitance area and the low voltage capacitance area are arranged in the power distribution cabinet body and are distributed anticlockwise; a sealing plate partition plate is arranged between the circuit breaker area and the mechanism area, and an observation window is arranged on the sealing plate partition plate so as to observe the state of an electric appliance element of the high-voltage chamber; and the high-voltage capacitor area, the low-voltage capacitor area and the breaker area form closed compartments through partition plates. The utility model discloses a rational arrangement of each group's part position, the utility model has the characteristics of multiple functional, compact, operation safe and reliable can make the direct current switch power distribution cabinet volume reduce, has realized system function with each unit interconnect, has the maloperation function of preventing simultaneously, has very strong practicality.

Description

High-voltage direct-current metal-enclosed switch power distribution cabinet

Technical Field

The utility model belongs to the technical field of switch board equipment technique and specifically relates to a high voltage direct current metal enclosed switch board.

Background

The high-voltage metal closed switch equipment is widely applied to a medium-voltage system as an indoor power distribution device for receiving and distributing electric energy, the electric body is completely closed by a metal conductor connected with a grounding system, a barrier for safety protection is formed on a human body, and the safety of the high-voltage metal closed switch equipment is widely accepted. With the maturity of high-power semiconductor devices and the technical breakthrough of the direct current regulation and control difficulty, direct current systems of various voltage levels become a new choice for new energy power transmission with inherent advantages, and direct current metal-enclosed switchgear is increasingly concerned by all parties.

Compared with alternating current transmission, high-voltage direct current transmission has the characteristics of low overall investment, long transmission distance and low transmission loss, and along with popularization and application of renewable energy sources such as photovoltaic energy, wind power energy and the like, the application of a micro-grid is gradually increased in the field of medium and low voltage application. The direct-current micro-grid power transmission is larger in power supply capacity and less in loss than alternating-current power transmission, and is better in power supply reliability, power quality, controllability and economic benefit and more suitable for flexible networking of loads. The asynchronous interconnection system also has the characteristic of asynchronous interconnection, and can connect power grids with different frequencies together, so that the asynchronous interconnection system is an important component of the current smart power grid.

Because the application of the direct-current micro-grid in the field of medium and low voltage is in the stage of starting, the mature metal-enclosed switchgear is not suitable for the installation of a mechanical direct-current circuit breaker, and the current metal-enclosed switchgear has the following problems:

the traditional alternating current power distribution cabinet is a three-phase system, and direct current is a single pole, so that the traditional alternating current power distribution cabinet cannot be directly used for power transmission and distribution of a direct current system. And need install original papers such as high-voltage capacitor, inductance, high-voltage resistance among the direct current distribution, must design special switch board cabinet body, as guaranteeing to overhaul the indispensable component high voltage isolator of safety, need carry out the design overall arrangement again, satisfy the demand of novel switch board cabinet body.

Therefore, a high-voltage direct-current metal-enclosed switch power distribution cabinet is provided.

SUMMERY OF THE UTILITY MODEL

The applicant provides a high-voltage direct-current metal-enclosed switch power distribution cabinet aiming at the defects in the prior art, which adopts a direct-current breaker to be fixedly installed and a cable wire inlet and outlet mode, and is provided with a wire inlet and outlet bidirectional isolating switch, wherein the wire inlet and outlet bidirectional isolating switch synchronously acts, and after the isolation is opened, a grounding switch is simultaneously switched on, so that a conductor in the cabinet is reliably grounded to protect the safety of personnel entering an interval.

The utility model discloses the technical scheme who adopts as follows:

a high-voltage direct-current metal-enclosed switch power distribution cabinet comprises a power distribution cabinet body, a mechanism area, a cable area, a breaker area, a high-voltage capacitor area, a low-voltage capacitor area and an instrument area, wherein the mechanism area, the cable area, the breaker area, the high-voltage capacitor area and the low-voltage capacitor area are arranged in the power distribution cabinet body and distributed anticlockwise;

a sealing plate partition plate is arranged between the circuit breaker area and the mechanism area, and an observation window is arranged on the sealing plate partition plate so as to observe the state of an electric appliance element of the high-voltage chamber;

the high-voltage capacitor area, the low-voltage capacitor area and the breaker area form closed compartments through partition plates;

the circuit breaker area and the interior of the circuit breaker area are internally provided with isolating switch assemblies, and the isolating switch assemblies extend into the cable area;

the same vacuum circuit breaker component is connected between the mechanism area and the circuit breaker area;

and an isolating switch operating component and an interlocking component are arranged in the mechanism area.

It is further characterized in that:

the isolating switch assembly comprises two isolating switches for isolating the outgoing line side and the incoming line side, the two isolating switches extend into a cable area and are connected with corresponding cables, the isolating switch assembly comprises a bottom frame, two groups of single-stage isolating switches which are composed of wall bushing, post insulators and pull rod insulators are arranged on the bottom frame, the two groups of isolating switches respectively control the incoming line isolation and the outgoing line isolation, and a grounding support for grounding is arranged on the bottom frame;

the two isolating switches are connected with the same main shaft in an inserted mode, one end of a pull rod insulator is hinged to the main shaft through a connecting rod, the lower end of the pull rod insulator is hinged to a contact knife, the connecting rod can be driven to rotate along with the installation of the main shaft, the pull rod insulator is driven to rotate through the connecting rod, one end of the contact knife is hinged to the lower end of the wall bushing, and the other end of the contact knife intermittently contacts with a moving contact on the pillar insulator along with the rotation of the pull rod insulator, so that the opening and the closing are achieved;

the main shaft is connected with a grounding shaft through a crank structure formed by a linkage crank arm and a linkage plate, the grounding shaft is movably inserted on the underframe, two grounding knives corresponding to the disconnecting switch are connected on the grounding shaft, the movable ends of the grounding knives are intermittently connected with a grounding contact connected with the lower end of the wall bushing along with the rotation of the grounding shaft, and the intermittent control grounding is controlled;

the main shaft, the linkage crank arm and the linkage plate are in structures, and the motion directions of the contact knife and the grounding knife are always opposite.

The chassis of the isolating switch assembly and the bottom surfaces of the vacuum circuit breaker components are sealed through metal sealing plates.

The vacuum circuit breaker component comprises a mechanism box arranged in the mechanism area, and a commutation circuit breaker, a main circuit breaker and a charging circuit breaker which are arranged in the circuit breaker area, wherein a repulsion permanent magnet mechanism is arranged in the mechanism box and used for controlling the switching of the commutation circuit breaker, the main circuit breaker and the charging circuit breaker in the circuit breaker area;

the lower ends of the commutation breaker, the main breaker and the charging breaker are connected with the same case, a pull rod is arranged in the case and connected with a driving shaft of the repulsion permanent magnet mechanism, meanwhile, the pull rod is respectively connected with a commutation breaker transmission support, a main breaker transmission support and a charging breaker transmission support in a control mode, and the commutation breaker transmission support, the main breaker transmission support and the charging breaker transmission support respectively correspondingly control the opening and closing of the commutation breaker, the main breaker and the charging breaker.

The upper end of the mechanism box is inserted with a manual opening shaft, the rotation of the manual opening shaft can control the work of the repulsion permanent magnet mechanism, and meanwhile, the side wall of the mechanism box is also inserted with an opening-closing state crank arm connected with an output shaft of the repulsion permanent magnet mechanism and used for outputting the opening-closing state of the repulsion permanent magnet mechanism.

The isolating switch operating assembly comprises a rear clamping plate and a front clamping plate which are oppositely arranged in parallel, and a plurality of support columns which are distributed in a matrix and are used for connecting the rear clamping plate and the front clamping plate together;

the front clamping plate is movably connected with a driving cam assembly, the driving cam assembly is formed by connecting an operating shaft, an eccentric wheel and a driving cam, the operating shaft is movably inserted on the front clamping plate, one side of the front clamping plate, which is close to the rear clamping plate, is connected with the driving cam, and the eccentric wheel is fixedly sleeved between the front clamping plate and the driving cam;

a driven wheel matched with the driving cam is movably inserted and connected onto the rear clamping plate, two positioning grooves are formed in the side wall of the driven wheel, positioning claws for limiting the driven wheel are intermittently clamped and connected onto the positioning grooves, the positioning claws are connected between the rear clamping plate and the front clamping plate through pin shafts movably penetrating and inserted, one ends, penetrating through the rear clamping plate, of the pin shafts are sleeved with bent plates, the other ends of the bent plates touch the first micro switches, and the first micro switches are controlled to be opened and closed;

the driven wheel can automatically follow the rotation of the driving cam, the driving cam comprises a bump and a plurality of driving embeddings which are connected on the bump and distributed annularly, the bump can intermittently push the positioning claw to separate the positioning claw from the positioning groove, the driven wheel is connected with a driven embedding corresponding to the driving embedding, and the driving embedding and the driven embedding are intermittent;

an output shaft is inserted into one end of the driven wheel penetrating through the rear clamping plate, an output crank arm is sleeved on the output shaft, and the output crank arm is connected to a main shaft of the isolating switch assembly and controls the isolating switch assembly to be separated and connected;

the positioning claw is also fixedly connected with a torsion spring core sleeve sleeved on the pin shaft, the torsion spring core sleeve is sleeved with a torsion spring, one end of the torsion spring is fixed on the positioning claw, and the other end of the torsion spring is fixed on the front clamping plate.

The utility model discloses a mechanism box, including front bezel, sliding sleeve, manual separating brake crank, repulsion permanent magnetic mechanism, the sliding sleeve mounting panel of one side upper end fixedly connected with of front bezel, the upper end of sliding sleeve mounting panel is connected with the sliding sleeve, can peg graft in the sliding sleeve and divide push rod assembly, is connected with the manual separating brake crank of circuit breaker on the manual separating brake crank of circuit breaker, and the manual separating brake crank of circuit breaker is connected with the manual separating brake axle of the upper end grafting of mechanism box, and the work of repulsion permanent magnetic mechanism can be controlled in the rotation of manual separating brake axle, and the manual separating brake push rod assembly still connects simultaneously in the interlocking subassembly.

The interlocking assembly comprises an operating panel, an interlocking baffle assembly capable of horizontally sliding is arranged on the inner side of the operating panel, the interlocking baffle assembly comprises a movable plate, one side, close to the movable plate, of the operating panel is connected with at least two guide nuts, the guide nuts slide in guide holes horizontally formed in the movable plate, a top plate capable of sliding is further connected to the operating panel, the top plate is connected with the movable plate, and the opening and closing state crank arms intermittently touch the top plate along with the movement of the top plate driven by the movable plate, so that mechanical indication is given to the state of the circuit breaker;

the manual opening and closing connecting lever is provided with a slide way which facilitates the sliding of the guide shaft, and the pressed manual opening and closing push rod component can be telescopically adjusted by arranging the reset spring;

the hand-separating push rod assembly comprises a front boss, a concave part, a rear boss and a hand-separating connecting rod which are connected with one another, a stepped structure is formed, the thicknesses of different steps are different, meanwhile, a movable plate is provided with a narrow groove, a round groove and a wide groove which are connected with one another, the width of the concave part is the same as the thickness of the movable plate, the movable plate is connected with cushion blocks along the circumferential direction of the wide groove, the thickness of the wide groove is increased, and the concave part can be limited from moving into the wide groove;

the movable plate is provided with a first sliding hole, a support is connected in the first sliding hole in a sliding mode, the support slides in the first sliding hole through a sliding block connected to the support, one end, penetrating through the first sliding hole, of the sliding block is connected with a positioning plate, the positioning plate extends into a second sliding hole formed in the operation panel, the length of the positioning plate is the same as that of the second sliding hole, the positioning plate is connected with a plurality of first fixing holes, the upper end, close to one side of the movable plate, of the support is provided with a spherical through hole, a steel ball abutting against the movable plate is connected in the spherical through hole, meanwhile, the support is also connected with a plate spring applying pressure to the steel ball, the steel ball is clamped in a positioning hole formed in the movable plate with certain acting force, and meanwhile, a plurality of inclined positioning holes are formed in the movable plate;

the movable plate is connected with a shifting piece extending to the second sliding hole, the length of the shifting piece is smaller than that of the second sliding hole, and the shifting piece can move left and right in the second sliding hole.

The operation panel is provided with an operation round hole for conveniently inserting an operation handle, and the movable plate is provided with an operation hole corresponding to the operation round hole.

The number of the positioning holes is three, the corresponding shifting piece moves to the rightmost end, the middle end and the leftmost end in the second sliding hole, and the positioning holes respectively correspond to the isolation operation position, the manual brake separating position and the operation position.

The utility model has the advantages as follows:

the utility model discloses compact structure, reasonable, convenient operation through the reasonable overall arrangement of each group's part position, has realized system's function with each unit interconnect, has overall arrangement compactness reasonable simultaneously, prevents the characteristics of maloperation function, mechanical type direct current breaker cooperation the utility model discloses an use will expand out direct current transmission's new mode.

And simultaneously, the utility model discloses still possess following advantage:

(1) Through be provided with in the switch board cabinet body 5 and be anticlockwise distribution mechanism district A, cable district C, circuit breaker district B, high-voltage capacitor district D, low-voltage capacitor district E to and instrument district F, can rationally install in the region of difference according to each electrical components's functional characteristics, in order to reach the purpose of safe, steady operation.

(2) The utility model discloses have multiple functional, compact, operation safe and reliable can make the volume of direct current switch board cabinet body reduce, simple structure satisfies the chain requirement of general five preventions completely.

(3) The interlocking assembly is arranged, operation selection can be performed only according to steps, the selected operation position can only be subjected to allowable operation, other operations do not have necessary conditions for operation at the current position, and the operation cannot be switched to other operation modes when not completed, so that device failure caused by brute force operation is avoided, the operation is convenient, and the safety is high.

(4) The automatic unlocking and locking functions of the isolation operating mechanism between the two positions of opening and closing can be realized through simple structural combination, the switch can be reliably locked at the opening or closing position unless force with operation intention is exerted on an operating shaft, and signals of two indication states of mechanical (indicating crank arm) and electrical (microswitch) are given at the opening and closing positions, so that the isolating operating mechanism is small in size, more attractive and has strong practicability.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 isbase:Sub>A sectional view of sectionbase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is the utility model discloses interlock subassembly, isolator operating element, vacuum circuit breaker part and isolator assembly connection structure sketch map.

Fig. 4 is a schematic view of the three-dimensional structure of the isolation switch assembly of the present invention.

Fig. 5 is a schematic structural view of the isolating switch assembly of the present invention when the contact knife is in an open state.

Fig. 6 is a schematic view of a three-dimensional structure of a vacuum circuit breaker component of the present invention.

Fig. 7 is a schematic cross-sectional view of the vacuum circuit breaker of the present invention.

Fig. 8 is a side view of the interlock assembly of the present invention.

Fig. 9 is a schematic view of the three-dimensional structure of the interlocking assembly of the present invention.

Fig. 10 is a front view of the interlock assembly of the present invention.

Figure 11 is the utility model discloses interlocking baffle subassembly, manual separating brake button and hand divide push rod assembly connection structure sketch map among the interlocking subassembly.

Figure 12 is the utility model discloses interlocking baffle subassembly structure sketch map in the interlocking subassembly.

Fig. 13 is a schematic view of the three-dimensional structure of the disconnecting switch operating assembly of the present invention.

Fig. 14 is a side view of the disconnecting switch operating assembly of the present invention.

Fig. 15 is a schematic view of the connection structure of the eccentric wheel, the driving cam, the driven wheel and the positioning pawl in the disconnecting switch operating assembly of the present invention.

Wherein:

1. an interlock assembly; 2. an isolator operating assembly; 3. a vacuum interrupter component; 4. an isolation switch assembly; 5. a power distribution cabinet body; A. a mechanism area; B. a breaker region; C. a cable zone; D. a high voltage capacitance region; E. a low voltage capacitance region; F. an instrument area;

101. a manual opening button; 102. an interlocking baffle assembly; 103. an operation panel; 104. connecting a nut; 105. a return spring; 106. a breaker manual opening crank arm; 107. a manual separation push rod assembly; 108. a second microswitch; 109. a guide nut; 110. a top plate; 111. a support; 112. positioning a plate; 1021. a cushion block; 1022. a shifting sheet; 1023. a push rod; 1024. an operation hole; 1025. a narrow groove; 1026. a circular groove; 1027. a wide groove; 1028. a guide hole; 1029. a movable plate; 10210. positioning holes; 10211. a first slide hole; 1031. a second sliding hole;

201. a support plate; 202. a rear splint; 203. a support pillar; 204. a sliding sleeve; 205. a sliding sleeve mounting plate; 206. a mounting frame; 207. a front splint; 208. indicating a crank arm; 209. a first microswitch; 210. bending a plate; 211. a pin shaft; 212. an output crank arm; 213. an operating shaft; 214. an eccentric wheel; 215. a driving cam; 216. a driven wheel; 217. a positioning claw; 218. a torsion spring; 219. a torsion spring core sleeve;

301. a mechanism box; 302. a chassis; 303. a commutation breaker; 304. a main circuit breaker; 305. a charging circuit breaker; 3011. a manual brake separating shaft; 3012. a switching-on and switching-off state crank arm; 3013. a repulsion permanent magnetic mechanism; 3021. a pull rod; 3031. a commutation breaker control switch; 3041. a main breaker control switch; 3051. a charging circuit breaker control switch;

401. a grounding bracket; 402. a wall bushing; 403. a post insulator; 404. a chassis; 405. a linkage crank arm; 406. a main shaft; 407. grounding a knife; 408. a moving contact; 409. a linkage plate; 410. a pull rod insulator; 411. a ground shaft; 412. contacting a cutter; 413. and a ground contact.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1-5, this embodiment discloses a high voltage direct current metal enclosed switch board, including the switch board cabinet body 5, be provided with in the switch board cabinet body 5 and be anticlockwise distribution mechanism district A, cable district C, circuit breaker district B, high-voltage capacitance district D, low-voltage capacitance district E to and instrument district F, can rationally install in the region of difference according to each electrical components's functional characteristics, in order to reach safe, steady operation's purpose.

Is characterized in that the equipment has different functional compartments, as shown in figure 1, a mechanism area A and a breaker area B are arranged in the middle of a cabinet body 5 of a power distribution cabinet side by side, a sealing plate clapboard is arranged between the breaker area B and the mechanism area A, an observation window is arranged on the sealing plate clapboard so as to observe the state of electrical elements of a high-voltage chamber, an interlocking assembly 1 and a disconnecting switch operating assembly 2 which are connected with each other are arranged in the mechanism area A,

a disconnecting switch assembly 4 is arranged in the circuit breaker area B, the same vacuum circuit breaker part 3 is connected between the mechanism area A and the circuit breaker area B, the interlocking component 1 is simultaneously connected with the disconnecting switch operation component 2 and the vacuum circuit breaker part 3, controls the driving of the vacuum circuit breaker part 3 and displays the running state of the vacuum circuit breaker part 3, and the disconnecting switch operation component 2 is simultaneously connected with the vacuum circuit breaker part 3 and the disconnecting switch assembly 4 and controls the opening and closing of the disconnecting switch assembly 4 and the vacuum circuit breaker part 3;

the cable area C is positioned at the lower part of the breaker area B and can be connected with incoming and outgoing cables, the isolating switch assembly 4 passes through the breaker area B and extends into the cable area C, the incoming and outgoing cables are conveniently and directly connected on the contact seat of the isolating switch assembly 4,

the high-voltage capacitor area D and the low-voltage capacitor area E are arranged side by side and are positioned on the upper portion of the circuit breaker area B, and closed compartments are formed among the high-voltage capacitor area D, the low-voltage capacitor area E and the circuit breaker area B through partition plates.

The instrument area F is located on the upper portion of the mechanism area A and in front of the low-voltage capacitor area E, electrical elements such as a rectifying device and a capacitor charger are mounted inside the instrument area F, a pressure relief channel is designed behind the cabinet, pressure of each functional unit after failure is released backwards, then the pressure is released upwards along the channel, and personal safety behind the cabinet is guaranteed.

High-voltage capacitor flip-chip in the high-voltage capacitor district D, during terminal on its high-voltage capacitor extended to circuit breaker district B, was connected with the main bus through the copper bar, was equipped with high-voltage reactor on circuit breaker district B's the lateral wall, was connected with high-voltage capacitor and main bus through the copper bar.

The vacuum circuit breaker component 3 comprises a mechanism box 301 arranged in a mechanism area a, a commutation circuit breaker 303, a main circuit breaker 304 and a charging circuit breaker 305 arranged in a circuit breaker area B, wherein a repulsive permanent magnet mechanism 3013 is arranged in the mechanism box 301 and is used for controlling the opening and closing of the commutation circuit breaker 303, the main circuit breaker 304 and the charging circuit breaker 305 in the circuit breaker area B, specifically, the lower ends of the commutation circuit breaker 303, the main circuit breaker 304 and the charging circuit breaker 305 are connected with a same case 302, a pull rod 3021 is arranged in the case 302, the pull rod 3021 is connected with a drive shaft of the permanent magnet mechanism 3013, the pull rod 3021 also respectively controls the opening and closing of a commutation circuit breaker transmission bracket 3031, a main circuit breaker transmission bracket 3041 and a charging circuit breaker transmission bracket 3051, the commutation circuit breaker transmission bracket 3031, the main circuit breaker transmission bracket 3041 and the charging circuit breaker transmission bracket 3051 respectively correspond to the opening and closing of the repulsive force of the commutation circuit breaker 303, the main circuit breaker 304 and the charging circuit breaker 305, meanwhile, a manual opening and closing shaft is inserted at the upper end of the mechanism 301, the manual opening and closing mechanism 3011 can control the working state of the permanent magnet mechanism 3013 by the repulsive force indicating the repulsive force output shaft of the permanent magnet mechanism 3013;

as shown in fig. 4-5, the isolating switch assembly 4 includes a bottom frame 404, two groups of single-stage isolating switches, each of which is composed of a wall bushing 402, a post insulator 403 and a pull rod insulator 410, are disposed on the bottom frame 404, the two groups of isolating switches respectively control incoming line isolation and outgoing line isolation, and a grounding bracket 401 for grounding is disposed on the bottom frame 404;

the same main shaft 406 is inserted into the two single-stage isolating switches, one end of the pull rod insulator 410 is hinged to the main shaft 406 through a connecting rod, the lower end of the pull rod insulator 410 is hinged to the contact knife 412, the connecting rod can be driven to rotate along with the rotation of the main shaft 406, the pull rod insulator 410 is driven to rotate through the connecting rod, one end of the contact knife 412 is hinged to the lower end of the wall bushing 402, and the other end of the contact knife 412 intermittently contacts with the moving contact 408 on the post insulator 403 along with the rotation of the pull rod insulator 410, so that the switching is realized;

the main shaft 406 is connected with a grounding shaft 411 through a crank structure formed by a linkage crank arm 405 and a linkage plate 409, the grounding shaft 411 is movably inserted on the underframe 404, two grounding knives 407 corresponding to the disconnecting switch are connected on the grounding shaft 411, and the movable ends of the grounding knives 407 are intermittently connected with a grounding contact 413 connected with the lower end of the wall bushing 402 along with the rotation of the grounding shaft 411 to control intermittent control grounding.

Meanwhile, due to the structures of the main shaft 406, the linkage crank arm 405 and the linkage plate 409, the moving directions of the contact knife 412 and the grounding knife 407 are always opposite, namely the contact knife 412 and the grounding knife 407 cannot be closed with corresponding contacts at the same time, and the safe grounding protection can be timely put into use after the main circuit is cut off.

The chassis 404 of the disconnector assembly 4 and the bottom surfaces of the circuit breakers are sealed by metal sealing plates, and the grounding bracket 401 is arranged on the chassis 404, so that the charging circuit breaker 305 can be used for connecting and isolating the charging circuit.

The wall-through type isolating switch assembly 4 with the grounding function and the sealing plate assist in completing the isolating function, the grounding function and the sealing function of the compartment.

In order to drive the isolating switch assembly 4 conveniently, the main shaft 406 of the isolating switch assembly 4 is connected with the isolating switch operating component 2;

as shown in fig. 11 to 13, the disconnecting switch operating assembly 2 includes a rear clamping plate 202 and a front clamping plate 207 which are oppositely arranged in parallel, and a plurality of support columns 203 which are distributed in a matrix and connect the rear clamping plate 202 and the front clamping plate 207 together;

the front clamping plate 207 is movably connected with a driving cam assembly, the driving cam assembly is formed by connecting an operating shaft 213, an eccentric wheel 214 and a driving cam 215, the operating shaft 213 is movably inserted on the front clamping plate 207, one side of the front clamping plate 207, which is close to the rear clamping plate 202, is connected with the driving cam 215, the eccentric wheel 214 is fixedly sleeved between the front clamping plate 207 and the driving cam 215, and the operating shaft 213 is provided with a non-circular hole, so that an operating handle can conveniently drive the operating shaft 213 to rotate;

a driven wheel 216 matched with the driving cam 215 is movably inserted and connected onto the rear clamping plate 202, two positioning grooves are formed in the side wall of the driven wheel 216, positioning claws 217 for limiting the driven wheel 216 are intermittently clamped and connected onto the positioning grooves, the positioning claws 217 are connected between the rear clamping plate 202 and the front clamping plate 207 through pin shafts 211 movably penetrating and inserted, one end, penetrating through the rear clamping plate 202, of each pin shaft 211 is sleeved with a bent plate 210, the other end of each bent plate 210 touches a first micro switch 209 and controls the opening and closing of the first micro switch 209, and an electric signal can be given through the opening and closing of the first micro switch 209 to remind an operator whether an isolating switch reaches a designated position;

the driven wheel 216 can automatically follow the rotation of the driving cam 215, the driving cam 215 comprises a bump and a plurality of driving embedding teeth connected to the bump and distributed in a ring shape, the bump can intermittently push the positioning claw 217 to enable the positioning claw 217 to be separated from the positioning groove, the driven wheel 216 is connected with a driven embedding tooth corresponding to the driving embedding tooth, meanwhile, a certain interval exists between the driving embedding tooth and the driven embedding tooth, and the time for the driving cam 215 to push the positioning claw 217 to be separated from the driven wheel 216 can be reserved.

An output shaft is inserted into one end of the driven wheel 216 penetrating through the rear clamping plate 202, an output crank arm 212 is sleeved on the output shaft, and the output crank arm 212 is connected to a main shaft 406 of the isolating switch assembly 4 and controls the isolating switch assembly 4 to be separated and connected;

still fixedly connected with cover torsion spring core cover 219 on round pin axle 211 on the positioning pawl 217, cup jointed the torsional spring 218 on the torsion spring core cover 219, the one end of torsional spring 218 is fixed on positioning pawl 217, and the other end of torsional spring 218 is fixed on front splint 207, can provide one through torsional spring 218 with positioning pawl 217 be close to the torsion of follower 216, make things convenient for in positioning pawl 217 can the joint constant head tank on follower 216.

The eccentric wheel 214 abuts against and pushes the indicating crank arm 208 to rotate, the indicating crank arm 208 rotates, the rotation angle of the operating shaft 213 can be visualized, the subsequent clamping position of the positioning claw 217 and the positioning groove can be conveniently checked, and the indicating crank arm 208 is hinged on the front clamping plate 207;

in order to conveniently limit the output shaft and improve the stability of the output crank arm 212, the other end of the output shaft is movably connected with a support plate 201, and the support plate 201 is connected with a rear clamping plate 202 through a plurality of support columns 203;

the external operating handle is inserted into the operating shaft 213 to drive the eccentric wheel 214 and the driving cam 215 to rotate clockwise or anticlockwise, the eccentric wheel 214 drives the indicating crank arm 208 to move to indicate the opening and closing positions, and meanwhile, the lug lifts or leaves the positioning claw 217 to drive the bent plate 210 fixed on the pin shaft 211 to rotate, so that the opening and closing of the first microswitch 209 are controlled, and whether the isolating switch reaches the specified position or not can be indicated along with the opening and closing of the first microswitch 209.

Meanwhile, as the positioning claw 217 is lifted, the driving embedding tool continues to drive the driven wheel 216 to move, so as to drive the output crank arm 212 connected with the driven wheel to move, and the output crank arm 212 is connected with the isolating switch assembly 4, so that the separating and connecting functions of the isolating switch assembly 4 are realized.

Through the above-mentioned features, the automatic unlocking and locking function of the isolation operating mechanism between the opening and closing positions can be realized, the switch can be reliably locked unless a force with an operation intention is applied to the operating shaft 213, and a mechanical (indicating crank arm 208) and electrical (first microswitch 209) status signal can be given at the opening and closing positions.

The lower extreme both sides of back splint 202 and front splint 207 still are connected with mounting bracket 206 respectively, and mounting bracket 206 is C type structure, and mounting bracket 206 passes through bolt assembly and is in the same place back splint 202 and front splint 207 block and be connected together, and has seted up the mounting hole on mounting bracket 206, convenient and switch board cabinet body 5 reciprocal anchorage.

Front plate 207's one side upper end fixedly connected with sliding sleeve mounting panel 205, sliding sleeve mounting panel 205's upper end is connected with sliding sleeve 204, it has hand branch push rod subassembly 107 to peg graft in the sliding sleeve 204, be connected with the manual separating brake connecting lever 106 of circuit breaker on the hand branch push rod subassembly 107, the manual separating brake axle 3011 of the upper end grafting of the manual separating brake connecting lever 106 of circuit breaker and mechanism case 301 is connected, the work of repulsion permanent magnetism mechanism 3013 can be controlled in the rotation of manual separating brake axle 3011, thereby control the opening and close of a plurality of circuit breakers, hand branch push rod subassembly 107 still connects simultaneously in interlocking subassembly 1.

As shown in fig. 3 to 8, the interlocking assembly 1 includes an operation panel 103, an interlocking baffle assembly 102 capable of horizontally sliding is disposed on an inner side of the operation panel 103, the interlocking baffle assembly 102 includes a movable plate 1029, at least two guide nuts 109 are connected to a side of the operation panel 103 close to the movable plate 1029, the guide nuts 109 slide in guide holes 1028 horizontally disposed on the movable plate 1029, so as to ensure relatively stable sliding of the interlocking baffle assembly 102 and the operation panel 103, a slidable top plate 110 is further connected to the operation panel 103, the top plate 110 is connected to the movable plate 1029, and as the movable plate 1029 drives the top plate 110 to move, the opening/closing state crank arm 3012 can be intermittently touched, so as to indicate an operating state of the repulsive permanent magnet mechanism 3013.

The manual separating push rod assembly 107 is inserted on the operation panel 103, one end of the manual separating push rod assembly 107, penetrating through the operation panel 103, is connected with the manual separating brake button 101, the other end of the manual separating push rod assembly 107 penetrates through the sliding sleeve 204 to be connected with the guide shaft and the connecting bolt 104, the guide shaft is arranged on one section between the manual separating brake connecting lever 106 of the circuit breaker and the disconnecting switch operation assembly 2 in a sleeved mode and is provided with the reset spring 105, a slide way convenient for the guide shaft to slide is further arranged on the manual separating brake connecting lever 106 of the circuit breaker, the manual separating push rod assembly 107 after being pressed can be adjusted in a telescopic mode through the reset spring 105, the separating brake operation of the direct current vacuum circuit breaker can be controlled through the manual separating push rod assembly 107, after the manual separating brake button 101 is pressed, the manual separating brake connecting lever assembly 107 can push the manual separating brake connecting lever 106 of the circuit breaker to move, the manual separating brake connecting lever 106 of the circuit breaker drives the manual separating brake shaft 3011 to rotate, and therefore a plurality of direct current vacuum circuit breakers can be controlled.

The hand-separating push rod assembly 107 comprises a front boss, a concave part, a rear boss and a hand-separating rod which are connected with each other, a step-shaped structure is formed, different step-shaped thicknesses are different, meanwhile, a narrow groove 1025, a circular groove 1026 and a wide groove 1027 which are connected with each other are arranged on the movable plate 1029, the width of the concave part is the same as that of the movable plate 1029, a cushion block 1021 is connected to the movable plate 1029 along the circumferential direction of the wide groove 1027, the thickness of the wide groove 1027 is increased, the concave part can be limited to move towards the wide groove 1027, the concave part can only slide between the circular groove 1026 and the narrow groove 1025, when the concave part moves towards the circular groove 1026, then the manual brake-separating button 101 is pressed, the front boss moves towards the rear side of the cushion block 1021, and the hand-separating push rod assembly 107 can move towards the wide groove 1027.

A first sliding hole 10211 is formed in the movable plate 1029, a bracket 111 is slidably connected to the first sliding hole 10211, the bracket 111 slides in the first sliding hole 10211 through a slider connected to the bracket 111, one end of the slider, which passes through the first sliding hole 10211, is connected to a positioning plate 112, the positioning plate 112 extends into a second sliding hole 1031 formed in the operation panel 103, the positioning plate 112 and the second sliding hole 1031 have the same length, a plurality of first fixing holes are connected to the positioning plate 112, a spherical through hole is formed in the upper end of the bracket 111, which is close to one side of the movable plate 1029, and a steel ball abutting against the movable plate 1029 is connected to the spherical through hole, and a plate spring for applying pressure to the steel ball is further connected to the bracket 111, so that the steel ball is clamped in a positioning hole 10210 formed in the movable plate 1029 by a certain acting force, and meanwhile, a plurality of inclined positioning holes 10210 are further formed in the movable plate 1029, and the positioning hole 10210 is conveniently clamped through the inclined positioning hole 10210, and the positioning hole 10210 can be conveniently separated from the positioning hole, when the steel ball is clamped in the plate by the plate clamped to the positioning hole 10210, the clamping effect can be improved, and if the clamping force is larger than the clamping force applied to the inclined plane of the steel ball is moved again, the inclined plane 10210, the inclined plane can be removed, and the positioning hole 10210;

the movable plate 1029 is connected with a shifting piece 1022 extending to the second sliding hole 1031, the length of the shifting piece 1022 is smaller than that of the second sliding hole 1031, the shifting piece 1022 can move left and right in the second sliding hole 1031, the movable plate 1029 can be conveniently driven to move by the shifting piece 1022, meanwhile, the positioning plate 112 extends in the second sliding hole 1031, and the length of the positioning plate 112 is the same as that of the second sliding hole 1031, after the movable plate 1029 moves, the positioning plate 112 is fixed relative to the operating panel 103, and the positioning plate 112 moves relative to the movable plate 1029, so that the bracket 111 connected to the rear side of the positioning plate 112 slides on the movable plate 1029, a steel ball can be clamped in different positioning holes 10210 for positioning, and the connection effect is improved.

The interlocking baffle plate assembly 102 is connected with a push rod 1023, the push rod 1023 can intermittently touch the second micro switch 108 along with the movement of the interlocking baffle plate assembly 102, a closing loop of the second micro switch 108 is cut off, the opening and closing of the second micro switch 108 are controlled, and the second micro switch 108 is connected to the side wall of the operation panel 103, so that when the interlocking baffle plate assembly 102 is driven by the poking piece 1022 to move, after the interlocking baffle plate assembly 102 moves to a specific position, the second micro switch 108 is triggered to cut off the closing loop, an electric locking effect is achieved, and the requirement that the isolating switch cannot be operated under load in the five-prevention requirement is met.

An operation round hole is formed in the operation panel 103, and an operation hole 1024 corresponding to the operation round hole is formed in the movable plate 1029;

the number of the positioning holes 10210 is three, the steel balls move into the three positioning holes 10210, and the corresponding shifting piece 1022 moves to the rightmost end, the middle end and the leftmost end in the second sliding hole 1031 and respectively corresponds to the isolation operation position, the manual brake separating position and the running position;

the working principle is as follows:

when the shifting piece 1022 moves to the rightmost end of the second sliding hole 1031, the operation hole 1024 is opposite to the operation circular hole, and in this position, the operation handle can be inserted to control the rotation of the disconnecting switch operation component 2, so as to control the opening and closing of the disconnecting switch assembly 4, and meanwhile, the movable plate 1029 will trigger the second micro switch 108 to cut off the closing circuit, so that the electrical locking effect is achieved;

after the operation handle is pulled out after the operation is finished, the shifting piece 1022 can be moved to the manual brake separating position, the manual brake separating button 101 is reset at the moment, the position can be used for carrying out electric brake separating and manual brake separating operations, but the interlocking baffle plate assembly 102 blocks the operation round hole, the separating and closing operations of the isolating switch cannot be carried out, and the misoperation of separating and closing the isolating switch with load can not occur.

When the moving piece 1022 moves to the operating position, it indicates that the circuit breaker can be switched on and enters an operating state, at this time, only an electric switching operation can be performed, and manual switching off cannot be performed, the switching-off/switching-on state connecting lever 3012 pushes the top plate 110 to indicate the state of the circuit breaker, and an operator determines to perform the next operation according to the indication. In an emergency, if a manual opening operation is performed, the shifting piece 1022 must be moved to a manual opening position, and the interlocking baffle assembly 102 blocks the operation circular hole, so that the operation of the disconnecting switch cannot be performed. Each position can be definitely locked by a padlock, and the safe operation is ensured.

Based on the foregoing, the utility model discloses a reasonable layout of each group's part position has realized system's function with each unit interconnect, has overall arrangement compactness reasonable simultaneously, prevents the characteristics of maloperation function, mechanical type direct current circuit breaker cooperation the utility model discloses an use will expand out direct current transmission's new mode.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims (10)

1. A high-voltage direct-current metal-enclosed switch power distribution cabinet is characterized by comprising a power distribution cabinet body (5), a mechanism area (A), a cable area (C), a circuit breaker area (B), a high-voltage capacitor area (D), a low-voltage capacitor area (E) and an instrument area (F), wherein the mechanism area (A), the cable area (C), the circuit breaker area (B), the high-voltage capacitor area (D), the low-voltage capacitor area (E) and the instrument area (F) are arranged in the power distribution cabinet body (5) and distributed anticlockwise;

a sealing plate partition plate is arranged between the circuit breaker area (B) and the mechanism area (A), and an observation window is arranged on the sealing plate partition plate so as to observe the state of the electric appliance element of the high-voltage chamber;

a closed compartment is formed among the high-voltage capacitor area (D), the low-voltage capacitor area (E) and the breaker area (B) through partition plates;

the circuit breaker area (B) is internally provided with a disconnecting switch assembly (4), and the disconnecting switch assembly (4) extends into the cable area (C);

the same vacuum circuit breaker component (3) is connected between the mechanism area (A) and the circuit breaker area (B);

and an isolating switch operation assembly (2) and an interlocking assembly (1) are arranged in the mechanism area (A).

2. The high voltage direct current metal enclosed switch board of claim 1, characterized in that: the isolating switch assembly (4) comprises two isolating switches used for isolating the outgoing line side and the incoming line side, the two isolating switches extend into the cable area (C) and are connected with corresponding cables, the isolating switch assembly (4) comprises a bottom frame (404), two groups of single-stage isolating switches consisting of a wall bushing (402), a post insulator (403) and a pull rod insulator (410) are arranged on the bottom frame (404), the two groups of isolating switches respectively control incoming line isolation and outgoing line isolation, and a grounding support (401) used for grounding is arranged on the bottom frame (404);

the two isolating switches are connected with the same main shaft (406) in an inserted mode, one end of a pull rod insulator (410) is hinged to the main shaft (406) through a connecting rod, the lower end of the pull rod insulator (410) is hinged to a contact knife (412), the connecting rod can be driven to rotate along with the installation of the main shaft (406), the pull rod insulator (410) is driven to rotate through the connecting rod, one end of the contact knife (412) is hinged to the lower end of the wall bushing (402), and the other end of the contact knife (412) is in intermittent contact with a moving contact (408) on the post insulator (403) along with the rotation of the pull rod insulator (410), so that the switching is achieved;

the main shaft (406) is connected with a grounding shaft (411) through a crank structure formed by a linkage crank arm (405) and a linkage plate (409), the grounding shaft (411) is movably inserted on the underframe (404), two grounding knives (407) corresponding to the isolating switch are connected on the grounding shaft (411), the movable ends of the grounding knives (407) are intermittently connected with a grounding contact (413) connected with the lower end of the wall bushing (402) along with the rotation of the grounding shaft (411), and the intermittent control grounding is controlled;

the main shaft (406), the linkage crank arm (405) and the linkage plate (409) are structurally characterized in that the movement directions of the contact knife (412) and the grounding knife (407) are always opposite.

3. The high voltage direct current metal enclosed switch board of claim 2, characterized in that: the chassis (404) of the disconnecting switch assembly (4) and the bottom surfaces of the plurality of vacuum circuit breaker components (3) are sealed through metal sealing plates.

4. The high voltage direct current metal enclosed switch board of claim 1, characterized in that: the vacuum circuit breaker component (3) comprises a mechanism box (301) arranged in a mechanism area (A), and a commutation circuit breaker (303), a main circuit breaker (304) and a charging circuit breaker (305) arranged in a circuit breaker area (B), wherein a repulsion permanent magnet mechanism (3013) is arranged in the mechanism box (301) and is used for controlling the switching of the commutation circuit breaker (303), the main circuit breaker (304) and the charging circuit breaker (305) in the circuit breaker area (B);

the lower ends of the converter circuit breaker (303), the main circuit breaker (304) and the charging circuit breaker (305) are connected with the same case (302), a pull rod (3021) is arranged in the case (302), the pull rod (3021) is connected with a driving shaft of the repulsive force permanent magnet mechanism (3013), the pull rod (3021) is also respectively connected with a converter circuit breaker transmission support (3031), a main circuit breaker transmission support (3041) and a charging circuit breaker transmission support (3051) in a control mode, and the converter circuit breaker transmission support (3031), the main circuit breaker transmission support (3041) and the charging circuit breaker transmission support (3051) respectively control the converter circuit breaker (303), the main circuit breaker (304) and the charging circuit breaker (305) to be opened and closed correspondingly.

5. The HVDC metal-enclosed switchgear cabinet of claim 4, characterized in that: the upper end of the mechanism box (301) is plugged with a manual opening shaft (3011), the rotation of the manual opening shaft (3011) can control the work of the repulsion permanent magnet mechanism (3013), and meanwhile, a switching-on/off state connecting lever (3012) connected with an output shaft of the repulsion permanent magnet mechanism (3013) is plugged on the side wall of the mechanism box (301) and used for outputting the switching-on/off state of the repulsion permanent magnet mechanism (3013).

6. The high-voltage direct-current metal-enclosed switch power distribution cabinet of claim 1, characterized in that: the disconnecting switch operating assembly (2) comprises a rear clamping plate (202) and a front clamping plate (207) which are oppositely arranged in parallel, and a plurality of support columns (203) which are distributed in a matrix and are used for connecting the rear clamping plate (202) and the front clamping plate (207) together;

the front clamping plate (207) is movably connected with a driving cam assembly, the driving cam assembly is formed by connecting an operating shaft (213), an eccentric wheel (214) and a driving cam (215), the operating shaft (213) is movably inserted in the front clamping plate (207), one side of the front clamping plate (207), which is close to the rear clamping plate (202), is connected with the driving cam (215), and the eccentric wheel (214) is fixedly sleeved between the front clamping plate (207) and the driving cam (215);

a driven wheel (216) matched with the driving cam (215) is movably inserted and connected to the rear clamping plate (202), two positioning grooves are formed in the side wall of the driven wheel (216), positioning claws (217) for limiting the driven wheel (216) are intermittently clamped and connected to the positioning grooves, the positioning claws (217) are connected between the rear clamping plate (202) and the front clamping plate (207) through hinge pins (211) movably penetrating and inserted, a bent plate (210) is sleeved at one end, penetrating through the rear clamping plate (202), of each hinge pin (211), the other end of each bent plate (210) touches a first microswitch (209), and the opening and closing of the first microswitch (209) are controlled;

the driven wheel (216) can automatically follow the rotation along with the rotation of the driving cam (215), the driving cam (215) comprises a bump and a plurality of driving embeddings which are connected on the bump and distributed annularly, the bump can intermittently push the positioning claw (217) to separate the positioning claw (217) from the positioning groove, the driven wheel (216) is connected with a driven embedding corresponding to the driving embedding, and the driving embedding and the driven embedding are intermittent;

an output shaft is inserted into one end, penetrating through the rear clamping plate (202), of the driven wheel (216), an output crank arm (212) is sleeved on the output shaft, the output crank arm (212) is connected to a main shaft (406) of the isolating switch assembly (4), and the isolating switch assembly (4) is controlled to be separated and connected;

the positioning claw (217) is further fixedly connected with a torsion spring core sleeve (219) sleeved on the pin shaft (211), the torsion spring core sleeve (219) is sleeved with a torsion spring (218), one end of the torsion spring (218) is fixed on the positioning claw (217), and the other end of the torsion spring (218) is fixed on the front clamping plate (207).

7. The high-voltage direct-current metal-enclosed switch power distribution cabinet of claim 6, characterized in that: one side upper end fixedly connected with sliding sleeve mounting panel (205) of preceding splint (207), the upper end of sliding sleeve mounting panel (205) is connected with sliding sleeve (204), can peg graft in sliding sleeve (204) and divide push rod subassembly (107), be connected with manual separating brake connecting lever of circuit breaker (106) on the manual separating brake pushing rod subassembly (107), manual separating brake connecting lever of circuit breaker (106) and the manual separating brake axle (3011) of the upper end grafting of mechanism case (301) are connected, the work of repulsion force permanent magnetism mechanism (3013) can be controlled in the rotation of manual separating brake axle (3011), the manual separating brake pushing rod subassembly (107) still is connected in interlocking subassembly (1) simultaneously.

8. The HVDC metal-enclosed switchgear cabinet of claim 7, characterized in that: the interlocking assembly (1) comprises an operation panel (103), an interlocking baffle assembly (102) capable of horizontally sliding is arranged on the inner side of the operation panel (103), the interlocking baffle assembly (102) comprises a movable plate (1029), one side, close to the movable plate (1029), of the operation panel (103) is connected with at least two guide nuts (109), the guide nuts (109) slide in guide holes (1028) horizontally formed in the movable plate (1029), a top plate (110) capable of sliding is further connected to the operation panel (103), the top plate (110) is connected with the movable plate (1029), and as the movable plate (1029) drives the top plate (110) to move, the switching-on and-off state crank arm (3012) intermittently touches the top plate (110), so that mechanical indication is given to the state of the circuit breaker;

the manual opening and closing push rod assembly (107) is inserted into the operation panel (103), one end, penetrating through the operation panel (103), of one end of the manual opening and closing push rod assembly (107) is connected with a manual opening and closing button (101), the other end of the manual opening and closing push rod assembly (107) penetrates through a sliding sleeve (204) to be connected with a guide shaft and a connecting nut (104), a reset spring (105) is sleeved on a section, located between a manual opening and closing connecting lever (106) of the circuit breaker and the disconnecting switch operation assembly (2), of the guide shaft, a slide way facilitating sliding of the guide shaft is further arranged on the manual opening and closing connecting lever (106) of the circuit breaker, and the pressed manual opening and closing push rod assembly (107) can be subjected to telescopic adjustment by arranging the reset spring (105);

the hand-separating push rod assembly (107) comprises a front boss, a recessed part, a rear boss and a hand-separating connecting rod which are connected with one another to form a stepped structure, different stepped thicknesses are different, meanwhile, a movable plate (1029) is provided with a narrow groove (1025), a round groove (1026) and a wide groove (1027) which are connected with one another, the width of the recessed part is the same as that of the movable plate (1029), a cushion block (1021) is connected to the movable plate (1029) along the circumferential direction of the wide groove (1027), the thickness of the wide groove (1027) is increased, and the recessed part can be limited from moving into the wide groove (1027);

a first sliding hole (10211) is formed in the movable plate (1029), a support (111) is connected in the first sliding hole (10211) in a sliding mode, a sliding block connected to the support (111) slides in the first sliding hole (10211), one end, penetrating through the first sliding hole (10211), of the sliding block is connected with a positioning plate (112), the positioning plate (112) extends into a second sliding hole (1031) formed in the operation panel (103), the lengths of the positioning plate (112) and the second sliding hole (1031) are the same, a plurality of first fixing holes are connected to the positioning plate (112), a spherical through hole is formed in the upper end, close to one side of the movable plate (1029), of the support (111), a steel ball abutting against the movable plate (1029) is connected to the spherical through hole, a plate spring applying pressure to the steel ball is connected to the support (111), the steel ball is clamped in a positioning hole (10) formed in the movable plate (1029) with a certain acting force, and a plurality of inclined planes are also arranged on the movable plate (1029);

a shifting piece (1022) extending to the second sliding hole (1031) is connected to the movable plate (1029), the length of the shifting piece (1022) is smaller than that of the second sliding hole (1031), and the shifting piece (1022) can move left and right in the second sliding hole (1031).

9. The high voltage direct current metal enclosed switch board of claim 8, characterized in that: the operation panel (103) is provided with an operation round hole for conveniently inserting an operation handle, and the movable plate (1029) is provided with an operation hole (1024) corresponding to the operation round hole.

10. The high-voltage direct-current metal-enclosed switch power distribution cabinet of claim 9, characterized in that: the number of the positioning holes (10210) is three, and the corresponding shifting piece (1022) moves to the rightmost end, the middle end and the leftmost end in the second sliding hole (1031) and respectively corresponds to an isolation operation position, a manual opening position and a running position.

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