CN114142377B - Bus-tie lifting cabinet - Google Patents

Abstract

The invention relates to a bus-tie lifting cabinet, which comprises a bus-tie cabinet and a lifting cabinet, wherein the bus-tie cabinet and the lifting cabinet are arranged in the left-right direction, a three-phase bus-tie main loop is arranged in the bus-tie cabinet, each phase of bus-tie main loop comprises a solid-sealed pole, a disconnecting switch and a bus-tie main bus, the incoming line side of the solid-sealed pole of the three-phase main loop is electrically connected with a middle contact seat of the three-phase bus-tie disconnecting switch, a closing static contact seat of the disconnecting switch is electrically connected with the bus-tie main bus, a three-phase lifting main loop is arranged in the lifting cabinet, each lifting main loop comprises a lifting disconnecting switch and a lifting main bus, the closing static contact seat of the lifting disconnecting switch is electrically connected with the lifting main bus, the solid-sealed pole and the bus-tie disconnecting switch in the three-phase bus-tie main loop are arranged in parallel in the front-back direction, and the three-phase bus-tie main bus is arranged in parallel in the front-back direction and extends in the left-right direction; and/or; three-phase lifting main buses and three-phase lifting isolating switches in the lifting cabinet are arranged in parallel along the front-rear direction, and the three-phase lifting main buses extend along the left-right direction.

Description

Bus-tie lifting cabinet

Technical Field

The invention relates to the field of high-voltage electricity, in particular to a bus-tie lifting cabinet.

Background

The inflatable cabinet is to seal the devices such as a breaker, a grounding switch, an isolating switch and the like in an air chamber filled with sulfur hexafluoride or other insulating gases so as to ensure the insulating performance of the switch device, and has the advantages of compact structure, high insulating reliability and no maintenance, and is becoming more and more important in the market.

In the electric power system, the isolation between two sections of high-voltage buses is provided with a bus-bar cabinet and a lifting cabinet, firstly, for maintenance convenience, when one section of bus of a transformer substation is maintained, the other section of bus runs, if the lifting cabinet is not provided, then in the bus-bar switch, either an upper contact is electrified or a lower contact is electrified, and the complete maintenance cannot be performed. Therefore, the application of the bus-tie lifting in the power system is very wide, and the bus-tie lifting inflatable cabinet is also receiving more and more attention from the market.

The utility model provides a bus allies oneself with and promotes cabinet among the prior art, all be equipped with three-phase main loop in bus allies oneself with cabinet and the promotion cabinet, in bus allies oneself with the cabinet, each main loop all includes solid utmost point post, bus allies oneself with isolator and bus allies oneself with main busbar, the inlet wire side of solid utmost point post is connected with bus allies oneself with isolator's middle touch seat electricity, bus allies oneself with isolator's combined floodgate static touch seat and bus allies oneself with main busbar electricity and is connected, in the promotion cabinet, each main loop all includes promotion isolator and promotes main busbar, promote isolator's combined floodgate static touch seat and promote main busbar electricity and be connected, promote isolator's inlet wire side and bus allies oneself with the outlet wire side of solid utmost point post in the bus allies oneself with the cabinet and pass through electrically conductive connection structure electricity.

However, the direction of the three-phase isolating switch of the bus-bar cabinet and the three-phase isolating switch of the lifting cabinet, which are sequentially arranged at intervals, are inconsistent with the direction of the three-phase main bus, each phase of main bus can be correspondingly and conductively connected with each isolating switch after the main bus is commutated through the commutating copper bars, when the wire inlet cabinet is used in a high-voltage and high-current environment, the thickness and the number of the commutating copper bars are also required to be correspondingly increased, the assembly is inconvenient, excessive space is occupied, and the resistor of each main loop is too large, the heating amount is too large and the safety performance is poor after the commutating copper bars are increased. And the opposite ends of the main buses in the two cabinets are not shielded, so that the electric field is uneven, and the insulation distance needs to be pulled apart, thereby enlarging the cabinet width of the air charging cabinet.

Disclosure of Invention

The invention aims to provide a bus-tie lifting cabinet, which aims to solve the technical problems of large heating value and poor safety performance of the bus-tie lifting cabinet in the prior art.

In order to achieve the above purpose, the technical scheme of the bus-tie lifting cabinet provided by the invention is as follows: the bus-connected lifting cabinet comprises a bus-connected cabinet and a lifting cabinet, wherein the bus-connected cabinet and the lifting cabinet are arranged in the left-right direction, three-phase bus-connected main circuits are arranged in the bus-connected cabinet, each phase of bus-connected main circuit comprises a solid-sealed pole, a disconnecting switch and a bus-connected main bus, the inlet wire side of the solid-sealed pole of the three-phase main circuit is electrically connected with a middle contact seat of the three-phase bus-connected disconnecting switch, a closing static contact seat of the disconnecting switch is electrically connected with the bus-connected main bus, a three-phase lifting main circuit is arranged in the lifting cabinet, each lifting main circuit comprises a lifting disconnecting switch and a lifting main bus, the closing static contact seat of the lifting disconnecting switch is electrically connected with the lifting main bus, the solid-sealed pole and the bus-connected disconnecting switch in the three-phase bus-connected main circuit are arranged in parallel in the front-back direction, and the three-phase bus-connected main bus is arranged in parallel in the front-back direction and extends in the left-right direction; and the three-phase lifting main buses and the three-phase lifting isolating switches in the lifting cabinet are arranged in parallel along the front-rear direction, the three-phase lifting main buses extend along the left-right direction, and the incoming line side of the lifting isolating switches is electrically connected with the outgoing line side of the solid-sealed polar pole in the bus-bar cabinet through an integrally designed conductive connection structure.

The beneficial effects are that: according to the bus-bar lifting cabinet provided by the invention, the three-phase bus-bar main buses, the three-phase solid-sealed polar poles and the three-phase bus-bar isolating switches in the bus-bar cabinet are sequentially arranged at intervals along the front-back direction, the arrangement directions are consistent, and/or the three-phase lifting main buses and the three-phase lifting isolating switches in the lifting cabinet are arranged in parallel along the front-back direction, the arrangement directions are consistent, so that the main buses and the isolating switches in the bus-bar cabinet and/or the lifting cabinet can be directly connected in a conductive manner without reversing through copper bars, the use of a large number of copper bars is eliminated, the heating value between the main buses and the isolating switches is reduced, the heating value is reduced, the safety performance is improved, the conductive connection point is reduced by adopting an integrally designed conductive connection structure, the resistance between the solid-sealed polar poles and the lifting isolating switches is further reduced, the heating value is further reduced, the three-phase lifting isolating switches and the three-phase solid-sealed polar poles are arranged in parallel along the front-back direction, and each phase lifting isolating switch corresponds to each phase solid-sealed polar pole.

As a further improvement, the bus-bar cabinet is provided with a bus-bar gas tank, a bus-bar switch gas tank and a bus-bar cable tank, the three-phase bus-bar main bus is located in the bus-bar gas tank, the three-phase bus-bar isolating switch and the solid-sealed pole are located in the bus-bar switch gas tank, the lifting cabinet is provided with a lifting bus gas tank, a lifting switch gas tank and a lifting cable tank, the three-phase lifting main bus is located in the lifting bus gas tank, the three-phase lifting isolating switch is located in the lifting switch gas tank, one part of the conductive connecting structure is located in the bus-bar cable tank, the other part of the conductive connecting structure is located in the lifting cable tank, the left end of the three-phase bus-bar main bus is provided with a bus-bar external connection end, the right end of the three-phase lifting main bus is provided with a lifting external end, the bus-bar external connection end leaks out of the bus-bar cabinet, and the lifting external connection end leaks out of the lifting cabinet.

The beneficial effects are that: the setting of female bus gas tank, female switch gas tank and female cable box that allies oneself with has improved the insulating properties of female cabinet that allies oneself with, promotes the setting of bus gas tank, promotion switch gas tank and promotion cable box, has improved the insulating properties of promotion cabinet, convenient to overhaul.

The bus bar air box and the lifting bus bar air box, the bus bar switch air box and the lifting switch air box, the bus bar air box and the lifting cable box of each cabinet are in one-to-one correspondence in the left-right direction, the bus bar air box and the switch air box of each cabinet are vertically separated by an upper horizontal partition plate, the switch air box and the cable box are vertically separated by a lower horizontal partition plate, each phase of solid-sealed polar post, each phase of solid-sealed polar switch and each phase of lifting isolating switch extend in the vertical direction, the lower side surface of the upper horizontal partition plate is provided with a mounting seat, the upper end of each phase of solid-sealed polar post is connected to the mounting seat, the lower end of each phase of solid-sealed polar post is in an insulating manner and is connected to the lower horizontal partition plate, the closing static contact seat of each phase of solid-sealed polar switch and each phase of lifting isolating switch is fixedly connected to the wall of the mother connecting cabinet, the middle seat of each phase of solid-sealed polar switch is electrically connected to each phase of solid-sealed polar post, and the grounding contact seat of each phase of solid-sealed polar switch is fixedly connected to the lifting cabinet wall of the lifting cabinet.

The beneficial effects are that: the upper end of the solid sealed pole is fixed on the upper side horizontal partition plate, the lower end is fixed on the lower side horizontal partition plate, and the lower end of the lifting isolating switch is fixed on the lower side horizontal partition plate, so that the integral strength of the bus-tie lifting cabinet is higher and is stable.

As a further improvement, the right side of the bus-tie cabinet and the left side of the lifting cabinet are respectively provided with a cabinet wall of the bus-tie cabinet, the right cabinet wall of the bus-tie cabinet and the left cabinet wall of the lifting cabinet are combined together to form a combined cabinet wall, the positions of each phase of bus-tie isolating switch and each phase of lifting isolating switch in the up-down direction and the left-right direction are in one-to-one correspondence, the grounding static contact seats of each phase of bus-tie isolating switch are connected on the combined cabinet wall of the bus-tie cabinet, the middle contact seats of each phase of lifting isolating switch are connected on the combined cabinet wall of the lifting cabinet in an insulating manner, and the connecting positions of the grounding static contact seats of each phase of bus-tie isolating switch and the middle contact seat of the lifting isolating switch are staggered up and down.

The beneficial effects are that: the connection position of the grounding static contact seat of each phase of the bus-bar isolating switch is staggered from top to bottom with the connection position of the middle contact seat of the lifting isolating switch, so that the installation is convenient, and the structural strength of the wall of the cabinet is ensured.

As a further improvement, at least one of the bus-tie main bus and the lifting main bus consists of two D-shaped buses which are arranged at intervals, the arc-shaped side surfaces of the two D-shaped buses are arranged in a back-to-back mode, the left end of the bus-tie main bus is provided with an external environment-friendly inner cone, and/or the right end of the lifting main bus is provided with an external environment-friendly inner cone, one end of the external environment-friendly inner cone, which faces the D-shaped buses, is provided with a plug board, the plug board is inserted into the interval of the two D-shaped buses and is connected with the two D-shaped buses through bolts, and the upper ends of the closing static contact seat of the bus-tie isolating switch and/or the closing static contact seat of the lifting isolating switch are provided with plug boards which are inserted into the interval of the two D-shaped buses from bottom to top and are connected with the two D-shaped buses through bolts.

The beneficial effects are that: the bus-bar main bus and/or the lifting main bus consists of two D-shaped buses which are arranged at intervals, the surface area of the D-shaped bus is larger, the through-flow capacity is good, and the heat dissipation capacity is strong.

As a further improvement, one end of the bus-bar main bus and/or the lifting main bus opposite to the external environment-friendly inner cone is provided with a shielding ring, one end of the shielding ring, which faces to the D-shaped bus, is provided with a mounting plate, and the mounting plate is inserted into the interval between the two D-shaped buses along the left-right direction and is connected with the two D-shaped buses through bolts.

The beneficial effects are that: the shielding ring is arranged between the bus-bar main bus and the lifting main bus, so that electric arcs are prevented from being generated between the bus-bar main bus and the lifting main bus, electric isolation between the bus-bar main bus and the lifting main bus can be realized without increasing the distance between the bus-bar main bus and the lifting main bus, the size of the bus-bar lifting cabinet in the width direction is reduced, and the shielding ring is provided with the mounting plate, so that the mounting is convenient.

As a further improvement, the right end of the bus-tie main bus and the left end of the lifting main bus are both provided with shielding rings.

The beneficial effects are that: the shielding ring is arranged between the bus-bar main bus and the lifting main bus, so that electric arcs are prevented from being generated between the bus-bar main bus and the lifting main bus, electric isolation between the bus-bar main bus and the lifting main bus can be realized without increasing the distance between the bus-bar main bus and the lifting main bus, and the size of the bus-bar lifting cabinet in the width direction is reduced.

As a further improvement, the conductive connection structure is a bent U-shaped all-insulated bus, the U-shaped all-insulated bus comprises a transverse extension section and vertical extension sections at two ends, the upper end of the left-end vertical extension section is electrically connected with the outlet side of the solid-sealed pole, the upper end of the right-end vertical extension section is electrically connected with the middle contact seat of the lifting isolating switch through a conductive rod, and the conductive rod extends along the up-down direction.

The beneficial effects are that: the U-shaped all-insulated bus is of a columnar structure, and the electric field is relatively uniform.

As a further improvement, the lower ends of the solid-sealed polar poles of each phase and the lower ends of the conductive rods of the isolating switches of each phase are respectively provided with an environment-friendly outer cone, the lower ends of the environment-friendly outer cones are provided with sealing surfaces, conductive rods are arranged in the environment-friendly outer cones and penetrate downwards through the sealing surfaces, and after the sealing surfaces are arranged on the lower horizontal partition plates, the conductive rods penetrate downwards through the lower horizontal partition plates from top to bottom to be electrically connected with the vertical extension sections of the U-shaped all-insulated buses.

The beneficial effects are that: the conducting rod on the environment-friendly outer cone is connected with the U-shaped all-insulated bus, so that the electric connection of the parts of the bus-bar cabinet and the lifting cabinet is realized.

Drawings

FIG. 1 is a schematic structural view of a bus-coupled lifting cabinet provided by the invention;

FIG. 2 is a schematic structural view of the overall main circuit of FIG. 1;

FIG. 3 is an assembly schematic diagram of the D-shaped bus, the external environment-friendly inner cone and the shielding ring in FIG. 2;

FIG. 4 is a schematic view of the shielding ring of FIG. 3;

FIG. 5 is a schematic view of the structure of a support insulator;

fig. 6 is a working schematic diagram of the bus-bar lifting cabinet.

Reference numerals illustrate: 1. a bus-bar cabinet; 11. a bus gas box; 12. a bus-tie switch gas box; 13. a bus cable box; 14. a bus is connected with the main bus; 15. a bus isolation switch; 16. sealing the polar post; 2. lifting the cabinet; 21. lifting a bus gas box; 22. lifting the switch air box; 23. lifting the cable box; 24. lifting the main bus; 25. lifting the isolating switch; 26. a conductive rod; 27. a grounding structure; 3. an upper horizontal partition plate; 4. a lower horizontal partition; 5. u-shaped all-insulated bus; 6. a current transformer; 7. a D-shaped bus; 71. externally connected with an environment-friendly inner cone; 72. a shielding ring; 73. a plug board; 74. an inserting plate; 740. a mounting hole; 75. a mounting plate; 8. a support insulator; 9. an environment-friendly outer cone.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

It should be noted that in the present embodiment, relational terms such as "first" and "second" and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" or the like does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises a depicted element.

In the description of the present invention, unless explicitly stated and limited otherwise, terms such as "mounted," "connected," and "connected" may be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.

In the description of the present invention, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.

The present invention is described in further detail below with reference to examples.

Embodiment 1 of the bus-tie lifting cabinet provided in the invention:

As shown in fig. 1, the bus-tie cabinet lifting cabinet comprises a bus-tie cabinet 1 and a lifting cabinet 2, wherein the bus-tie cabinet 1 and the lifting cabinet 2 are connected in parallel along the left-right direction.

As shown in fig. 2, the bus-tie cabinet 1 is provided with an upper horizontal partition plate 3 and a lower horizontal partition plate 4, and the two horizontal partition plates are arranged at intervals up and down, so that a cabinet cavity of the bus-tie cabinet 1 is partitioned into three air boxes, and the three air boxes are a bus-tie bus air box 11, a bus-tie switch air box 12 and a bus-tie cable box 13 in sequence from top to bottom.

The bus-bar air box 11 is internally provided with three-phase bus-bar main buses 14, the three-phase bus-bar main buses 14 extend along the left-right direction and are sequentially arranged at intervals along the front-back direction of the bus-bar cabinet 1, the structures of the respective phase bus-bar main buses 14 are consistent and are formed by arranging two D-shaped buses 7 relatively, the left end of each phase bus-bar main bus 14 is provided with an external environment-friendly inner cone 71, the external environment-friendly inner cone 71 is sleeved on the bus-bar main bus 14, the end of the external environment-friendly inner cone 71, facing the bus-bar main bus 14, is provided with a plugboard 73, and during connection, the plugboard 73 is inserted into the interval between the two D-shaped buses 7 of the same bus-bar main bus 14 and is connected with the two D-shaped buses 7 through plug-in bolts.

The right end of each bus bar 14 is provided with a shielding ring 72, as shown in fig. 4, one end of the shielding ring 72 facing the bus bar 14 is provided with a mounting plate 75, when in connection, the mounting plate 75 is inserted into the interval between the two D-shaped bus bars 7 of the same bus bar 14, and the mounting plate 75 is provided with a mounting hole 740 which is connected with the D-shaped bus bars 7 through an inserted bolt.

The bus-tie switch gas tank 12 is internally provided with three-phase solid-sealed polar poles 16 and three-phase bus-tie isolating switches 15, the three-phase solid-sealed polar poles 16 and the three-phase bus-tie isolating switches 15 extend vertically and are arranged in parallel in the front-back direction of the bus-tie cabinet 1, and each phase solid-sealed polar pole 16 and each phase bus-tie isolating switch 15 are in one-to-one corresponding conductive connection on the left side of the bus-tie isolating switch 15. Each phase of bus-connected isolating switch 15 comprises a closing static contact seat, a middle contact seat and a grounding static contact seat, wherein an inserting plate 74 is arranged at the upper end of the closing static contact seat at the upper end of each phase of bus-connected isolating switch 15, the inserting plate 74 is inserted into the interval between the two D-shaped buses 7 of the corresponding bus-connected main bus 14 and is electrically connected with the two D-shaped buses 7 through bolts, a grounding structure 27 is arranged on the grounding static contact seat at the lower end of each phase of bus-connected isolating switch 15, the grounding structure 27 is a grounding row, the grounding row is connected with the right side cabinet wall of the bus-connected cabinet 1 and is used for leading current out of the bus-connected cabinet 1 when the bus-connected isolating switch 15 is in a grounding state, so that the electric current is convenient to overhaul, and the middle contact seat at the middle of each phase of the bus-connected isolating switch 15 is electrically connected with each phase of solid-sealed polar pole 16.

The upper ends of the solid sealed polar poles 16 of each phase are all arranged on the upper horizontal partition plate 3; the lower side of each solid utmost point post 16 that seals mutually is connected with environmental protection outer cone 9, specifically, the lower extreme of each solid utmost point post 16 that seals is equipped with tang structure, be provided with the transition conducting rod between solid utmost point post 16 and the environmental protection outer cone 9, the upper end and the lower extreme of transition conducting rod all are equipped with the tang, the upper end of transition conducting rod is connected with the lower extreme tang cooperation of solid utmost point post, the inside conducting rod that is equipped with of environmental protection outer cone 9, the upper end of conducting rod is equipped with the tang, be connected with the lower extreme tang cooperation of transition conducting rod, the lower terminal surface of environmental protection outer cone 9 is sealed face, sealing support is on downside horizontal baffle 4, the conducting rod passes downside horizontal baffle 4 downwards, for be connected with promotion isolator 25 electricity through electrically conductive connection structure.

As shown in fig. 2, the lifting cabinet 2 is also separated by the upper horizontal partition plate 3 and the lower horizontal partition plate 4 into three air boxes, namely a lifting bus air box 21, a lifting switch air box 22 and a lifting cable box 23 from top to bottom, and when the lifting cabinet 2 is connected with the bus-bar cabinet 1 in a parallel manner, the cabinet wall on the left side of the lifting cabinet 2 is tightly attached to the cabinet wall on the right side of the bus-bar cabinet 1.

The lifting bus air box 21 is internally provided with three-phase lifting main buses 24, the three-phase lifting main buses 24 extend along the left and right directions and are sequentially arranged at intervals along the front and rear directions of the lifting cabinet 2, as shown in fig. 3, the structures of the lifting main buses 24 of each phase are identical and are formed by opposite arrangement of two D-shaped buses 7, the left end of each lifting main bus 24 of each phase is provided with an external environment-friendly inner cone 71, the external environment-friendly inner cones 71 of the lifting main buses are identical to the external environment-friendly inner cones 71 used for being connected with the bus-tie main buses 14, the external environment-friendly inner cones 71 are sleeved on the lifting main buses 24, the inner side surfaces of the external environment-friendly inner cones 71 can be in tight contact with the arc-shaped side surfaces of the D-shaped buses 7, plug plates 73 are arranged at the ends of the external environment-friendly inner cones 71 facing the lifting main buses 24, and are inserted into the intervals of the two D-shaped buses 7 of the same lifting main buses 24 and are connected with the two D-shaped buses 7 through plug-in bolts, and after the plug-in bolts are connected to the D-shaped buses 7, the heads of the plug-in bolts sink into the arc-shaped side surfaces of the D-shaped buses 7 to avoid tip discharge.

The left end of each lifting main bus 24 is provided with a shielding ring 72, the shielding ring 72 at the position is consistent with the shielding ring 72 connected to the right end of the bus bar 14 in structure, as shown in fig. 4, one end of the shielding ring 72, which faces the lifting main bus 24, is provided with a mounting plate 75, when the two D-shaped buses 7 of the same lifting main bus 24 are connected, the mounting plate 75 is inserted into the interval between the two D-shaped buses 7, and the mounting plate 75 is provided with a mounting hole 740, and is connected with the D-shaped buses 7 through an inserted bolt.

The lifting switch air box 22 is internally provided with three-phase lifting isolating switches 25, and the three-phase lifting isolating switches 25 extend vertically and are arranged in parallel in the front-rear direction of the lifting cabinet 2. Each phase of lifting isolating switch 25 corresponds to each phase of bus-bar isolating switch 15 one by one, each phase of lifting isolating switch 25 comprises a closing static contact seat, a middle contact seat and a grounding static contact seat, the closing static contact seat at the upper end of each phase of lifting isolating switch 25 is arranged on the upper side horizontal partition plate 3, the upper end of each closing static contact seat is provided with an inserting plate 74, the inserting plate 74 is inserted into the interval between the two D-shaped buses 7 of the corresponding lifting main bus 24 and is electrically connected with the two D-shaped buses 7 through bolts, the grounding static contact seat at the lower end of each phase of lifting isolating switch 25 is provided with a grounding structure 27, the grounding structure 27 is a grounding row, the grounding row is connected with the right side cabinet wall of the lifting cabinet 2 and is used for leading current out of the lifting cabinet 2 when the lifting isolating switch 25 is in a grounding position, the middle contact seat at the middle of each phase of lifting isolating switch 25 is convenient to overhaul, as shown in fig. 5, the right end of the supporting insulator 8 is connected with the middle contact seat, the right end of the middle contact seat is connected with the supporting insulator 8, the left end of the supporting insulator is connected with the middle seat in an insulating structure, the left end of the lifting cabinet 2 is connected with the left side cabinet wall of the lifting cabinet 2, the lifting cabinet is staggered with the position of the lifting cabinet 2, and the position of the supporting insulator is connected with the lifting cabinet 1, and is connected with the position of the lifting cabinet is staggered with the lifting cabinet.

The middle contact seat of each phase lifting isolating switch 25 and the supporting insulator 8 are also provided with conductive rods 26, the conductive rods 26 extend along the up-down direction, the lower ends of the conductive rods 26 are connected with environment-friendly outer cones 9, specifically, the lower ends of the conductive rods 26 are provided with spigot structures, conductive rods are arranged inside the environment-friendly outer cones 9, the upper ends of the conductive rods are provided with spigots and are connected with the lower end spigots of the corresponding conductive rods 26 in a matched mode, the lower end faces of the environment-friendly outer cones 9 are sealing faces, the conductive rods are supported on the lower side horizontal partition plates 4 in a sealing mode, and the conductive rods penetrate through the lower side horizontal partition plates 4 downwards to be used for being electrically connected with the solid sealing polar pole 16 through the conductive connection structures.

The upper end of the environment-friendly outer cone 9 is also provided with a spigot, and when in connection, the conductive rod 26 is connected with the spigot of the environment-friendly outer cone 9 in a matched manner, the lower end surface of the environment-friendly outer cone 9 is a sealing surface, the sealing surface is supported on the lower side horizontal partition plate 4 in the lifting cabinet 2 in a sealing manner, and the sealing surface is provided with a conductive rod which downwards penetrates through the lower side horizontal partition plate 4.

As shown in fig. 2, the U-shaped fully-insulated busbar 5 with the integrally-designed conductive connection structure comprises a transverse extension section and vertical extension sections at two ends, the transverse extension section is provided with a current transformer 6, the upper end of the vertical extension section at the left end is electrically connected with a conductive rod of the environment-friendly outer cone 9 at the lower end of the solid-sealed pole 16, and the upper end of the vertical extension section at the right end is electrically connected with a conductive rod of the environment-friendly outer cone 9 at the lower end of the conductive rod 26, so that the parallel cabinet connection of the bus-tie cabinet 1 and the lifting cabinet 2 is realized.

The above-mentioned each phase bus-tie main bus 14, each phase bus-tie isolating switch 15 and each phase solid-seal polar pole 16 are in one-to-one correspondence in the front-to-back direction to form a three-phase bus-tie main circuit inside the bus-tie cabinet 1, each phase lifting main bus 24 and each phase lifting isolating switch 25 are in one-to-one correspondence in the front-to-back direction to form a three-phase lifting main circuit inside the lifting cabinet 2, and the three-phase bus-tie main circuit and the three-phase lifting main circuit are in one-to-one correspondence in the left-to-right direction to form a three-phase integral main circuit of the bus-tie lifting cabinet, each phase bus-tie isolating switch 15 and each phase lifting isolating switch 25 are respectively provided with three working positions, namely an isolating closing position, an opening position and a grounding position. The solid-sealed pole 16 has two working positions, namely a closing position and a separating position. When the bus-tie isolating switch 15 and the lifting isolating switch 25 are both in an isolating switch-on position and the solid-sealed pole 16 is in a switch-on position, the whole main loop is communicated; when at least one of the bus isolation switch 15, the solid-sealed pole 16 and the lifting isolation switch 25 is in the off position, the whole main loop is disconnected; when the solid-sealed pole 16 is in a closing position and the bus-connected isolating switch 15 is in a grounding position, current is directly led into the ground from the bus-connected isolating switch 15 through the cabinet body and does not flow to the lifting cabinet 2 any more; when the lifting isolating switch 25 is in the grounding state, current flows to the ground through the lifting isolating switch 25 and the cabinet wall of the lifting cabinet 2, and the current does not flow to the bus-bar cabinet 1 any more.

When the bus-bar lifting cabinet is used, as shown in fig. 6, the bus-bar main bus 14 and the lifting main bus 24 are electrically connected with corresponding electrical equipment, and when the corresponding electrical equipment on one side of the bus-bar lifting cabinet is required to be overhauled, the bus-bar isolating switch 15 and the lifting isolating switch 25 are both in a communicating position, the whole main loop is communicated, and current is enabled to pass through the bus-bar lifting cabinet to pass through the electrical equipment to be overhauled and continue to be downwards conveyed, so that the overhauling work does not affect the normal power transmission.

According to the bus-bar lifting cabinet provided by the invention, the three-phase bus-bar main bus 14, the three-phase solid-sealed polar pole 16 and the three-phase bus-bar isolating switch 15 in the bus-bar cabinet 1 are sequentially arranged at intervals along the front-back direction, the arrangement directions are consistent, the three-phase lifting main bus 24 and the three-phase lifting isolating switch 25 in the lifting cabinet 2 are arranged in parallel along the front-back direction, and the arrangement directions are consistent, so that the main bus and the isolating switch in the bus-bar cabinet 1 and the lifting cabinet 2 can be directly connected in a conductive manner without reversing through copper bars, the use of a large number of copper bars is eliminated, the heating value between the main bus and the isolating switch is further reduced, the heating is reduced, the lower end of the solid-sealed polar pole 16 is not connected through the copper bars, the conductive connection structure in an integrated design is adopted, the conductive connection point is reduced, the resistance between the solid-sealed polar pole 16 and the lifting isolating switch 25 is further reduced, and the safety performance is further improved.

Embodiment 2 of the bus-tie lifting cabinet provided in the invention:

This embodiment differs from embodiment 1 in that: in embodiment 1, the three-phase bus bar 14, the three-phase solid-sealed pole 16 and the three-phase bus bar isolating switch 15 in the bus bar cabinet 1 are sequentially arranged at intervals along the front-back direction, the arrangement direction is consistent, and the three-phase lifting bus bar 24 and the three-phase lifting isolating switch 25 in the lifting cabinet 2 are arranged in parallel along the front-back direction, and the arrangement direction is consistent. In this embodiment, the three-phase bus-bar main bus, the three-phase solid-sealed pole and the three-phase bus-bar isolating switch in the bus-bar cabinet are all arranged at intervals along the front-back direction, the arrangement directions are consistent, the three-phase lifting main bus in the lifting cabinet is arranged at intervals along the front-back direction, the three-phase lifting isolating switches are arranged in parallel along the left-right direction, and the arrangement directions of the three-phase main bus and the three-phase isolating switch are inconsistent.

Of course, in other embodiments, the three-phase bus isolation switches may be arranged in parallel along the left-right direction, the three-phase bus main buses are arranged in parallel along the front-back direction, and the directions of the three-phase lifting isolation switches and the three-phase lifting isolation switches are consistent.

Embodiment 3 of the bus-tie lifting cabinet provided in the invention:

This embodiment differs from embodiment 1 in that: in embodiment 1, the three-phase bus bar 14 and the three-phase lifting bus bar 24 are each constituted by two D-shaped bus bars 7 arranged at intervals. In this embodiment, the three-phase bus-tie main bus is in a cylindrical structure, and the three-phase lifting main bus is composed of two D-shaped buses arranged at intervals.

Of course, in other embodiments, the three-phase bus bar is formed by two D-shaped bus bars arranged at intervals, and the three-phase lifting main bus bar has a cylindrical structure.

Embodiment 4 of the bus-tie lifting cabinet provided in the invention:

This embodiment differs from embodiment 1 in that: in embodiment 1, the three-phase bus bar 14 and the three-phase lifting bus bar 24 are each composed of two D-shaped bus bars 7 arranged at intervals, the right end of the three-phase bus bar 14 is provided with a shielding ring 72, and the left end of the three-phase lifting bus bar 24 is provided with a shielding ring 72. In this embodiment, the three-phase bus-tie main bus and the three-phase lifting main bus are both cylindrical structures, and on the premise that the right end of the three-phase bus-tie main bus is provided with a shielding ring, and the left end of the three-phase lifting main bus is provided with a shielding ring.

Example 5 of a master batch lifting cabinet provided in the present invention:

This embodiment differs from embodiment 1 in that: in embodiment 1, the outgoing line side of the three-phase solid-sealed pole 16 is electrically connected to the lower end of the three-phase lifting isolating switch 25 through a U-shaped fully-insulated bus 5, and the U-shaped fully-insulated bus 5 serves as an electrically conductive connection structure. In this embodiment, the outlet side of the three-phase solid-sealed pole is electrically connected with the lower end of the three-phase lifting isolating switch through a reversing copper bar, and the reversing copper bar is used as an electrically conductive connection structure.

Example 6 of a master batch lifting cabinet provided in the present invention:

this embodiment differs from embodiment 1 in that: in embodiment 1, the right side of the bus-bar cabinet 1 and the left side of the lifting cabinet 2 are respectively provided with a cabinet wall of the bus-bar cabinet 1, and the right side cabinet wall of the bus-bar cabinet 1 and the left side cabinet wall of the lifting cabinet 2 are combined together to form a combined cabinet wall. In this embodiment, a partition board is arranged between the bus-tie cabinet and the lifting cabinet, the partition board forms a cabinet combining wall, the left side surface of the partition board forms a right side cabinet wall of the bus-tie cabinet, and the right side surface of the partition board forms a left side cabinet wall of the lifting cabinet.

Embodiment 7 of the bus-tie lifting cabinet provided in the invention:

This embodiment differs from embodiment 1 in that: in embodiment 1, the direction of parallel arrangement of the female-connection isolating switches 15 of each phase is consistent with the direction of parallel arrangement of the lifting isolating switches 25 of each phase, and the wire inlet side of the lifting isolating switch 25 is electrically connected with the wire outlet side of the solid-sealed pole 16 in the female-connection cabinet through an integrally designed conductive connection structure. In this embodiment, the parallel arrangement direction of the phase bus isolation switches is inconsistent with the parallel arrangement direction of the phase lifting isolation switches, and the outlet side of the three-phase solid-sealed pole is in reversing conductive connection with the lower end of the three-phase lifting isolation switches through a reversing copper bar.

The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a bus allies oneself with and promotes cabinet (2), including bus allies oneself with cabinet (1) and promotion cabinet (2), bus allies oneself with cabinet (1) and promote cabinet (2) and arrange in controlling the direction, be equipped with the main return circuit of three-phase bus allies oneself with in bus allies oneself with cabinet (1), each looks bus allies oneself with main return circuit all including solid utmost point post (16), isolator and bus allies oneself with main busbar (14), the inlet wire side of the solid utmost point post (16) of three-phase main return circuit is connected with the middle seat electricity that touches of the female isolator (15) of three-phase, isolator's the static seat that closes a floodgate is connected with the main busbar (14) electricity of bus allies oneself with, be equipped with the three-phase in the promotion cabinet (2), each promotes main return circuit and all includes to promote isolator (25) and promotes main busbar (24), the static seat that closes a floodgate of isolator (25) is connected with the main busbar electricity of promotion, its characterized in that: the solid-sealed polar poles (16) and the bus isolating switches (15) in the three-phase bus main circuit are arranged in parallel along the front-back direction, and the three-phase bus main buses (14) are arranged in parallel along the front-back direction and extend along the left-right direction; three-phase lifting main buses (24) and three-phase lifting isolating switches (25) in the lifting cabinet (2) are arranged in parallel along the front-rear direction, the three-phase lifting main buses (24) extend along the left-right direction, and the wire inlet side of the lifting isolating switches (25) is electrically connected with the wire outlet side of the solid-sealed pole (16) in the bus-bar cabinet (1) through an integrally designed conductive connection structure.

2. The bus bar lifting cabinet according to claim 1, wherein the bus bar cabinet (1) is provided with a bus bar gas tank (11), a bus bar switch gas tank (12) and a bus bar cable tank (13), the three-phase bus bar main buses (14) are all located in the bus bar gas tank (11), the three-phase bus bar isolating switches (15) are all located in the bus bar switch gas tank (12), the lifting cabinet (2) is provided with a lifting bus bar gas tank (21), a solid sealing pole (16) lifting switch gas tank (22) and a lifting cable tank (23), the three-phase lifting main buses (24) are all located in the lifting bus bar gas tank (21), the three-phase lifting isolating switches (25) are all located in the lifting switch gas tank (22), one part of the conductive connection structures is located in the bus bar cable tank (13), the other part is located in the lifting cable tank (23), the left end of the three-phase bus bar main buses (14) is provided with a bus bar external connection end, the right end of the three-phase main buses (24) is provided with a lifting external connection end, and the lifting end of the bus bar main buses (24) is leaked out of the lifting cabinet (1).

3. The bus bar lifting cabinet according to claim 1 or 2, characterized in that the bus bar gas tank (11) and the lifting bus bar gas tank (21), the bus bar gas tank (12) and the lifting switch gas tank (22), the bus bar gas tank (13) and the lifting cable tank (23) are in one-to-one correspondence in the left-right direction, the bus bar gas tank and the switch gas tank of each cabinet are separated up and down by an upper side horizontal partition plate (3), the switch gas tank and the cable tank are separated up and down by a lower side horizontal partition plate (4), each phase of solid-sealed polar column (16), each phase of solid-sealed polar column (15) and each phase of lifting isolating switch (25) extend along the up-down direction, the lower side surface of the upper side horizontal partition plate (3) is provided with a mounting seat, the lower end of each phase of solid-sealed polar column (16) is connected on the mounting seat, each phase of solid-sealed polar column (16) is connected on the lower side horizontal partition plate (4), each phase of solid-sealed polar column (15) and each phase of lifting isolating switch (25) is connected on the upper side of the upper side horizontal partition plate (4), each phase of solid-sealed polar column (15) is connected on the lifting isolating column (2), and each phase of solid-sealed polar column (15) is connected on the lifting base of the upper side of the solid-sealed polar column (2).

4. A bus-tie lifting cabinet according to claim 3, characterized in that the right side of the bus-tie cabinet (1) and the left side of the lifting cabinet (2) are respectively provided with a cabinet wall, the right side cabinet wall of the bus-tie cabinet (1) and the left side cabinet wall of the lifting cabinet (2) are combined together to form a combined cabinet wall, the positions of each phase of bus-tie isolating switch (15) and each phase of lifting isolating switch (25) in the up-down direction and the left-right direction are in one-to-one correspondence, the grounding static contact seat of each phase of bus-tie isolating switch (15) is connected on the combined cabinet wall of the bus-tie cabinet (1), the middle contact seat of each phase of lifting isolating switch (25) is in insulating connection on the combined cabinet wall of the lifting cabinet (2), and the connecting position of the grounding static contact seat of each phase of bus-tie isolating switch (15) and the connecting position of the middle contact seat of the lifting isolating switch (25) are staggered up and down.

5. The bus-bar lifting cabinet according to claim 1 or 2, wherein at least one of the bus-bar main bus bar (14) and the lifting main bus bar (24) is composed of two D-shaped bus bars (7) which are arranged at intervals, the arc-shaped side surfaces of the two D-shaped bus bars (7) are arranged in a back-to-back manner, an external environment-friendly inner cone (71) is arranged at the left end of the bus-bar main bus bar (14) and/or an external environment-friendly inner cone (71) is arranged at the right end of the lifting main bus bar (24), one end of an external environment-friendly inner cone (71) facing to the D-shaped buses (7) is provided with a plugboard (73), the plugboard (73) is inserted into the interval between the two D-shaped buses (7) and is connected with the two D-shaped buses (7) through bolts, the upper end of a closing static contact seat of a bus isolating switch (15) and/or a closing static contact seat of a lifting isolating switch (25) is provided with an inserting plate (74), and the inserting plate (74) is inserted into the interval between the two D-shaped buses (7) from bottom to top and is connected with the two D-shaped buses (7) through bolts.

6. The bus bar lifting cabinet according to claim 5, wherein a shielding ring (72) is arranged at one end of the bus bar main bus bar (14) and/or the lifting main bus bar (24) opposite to the external environment-friendly inner cone (71), a mounting plate (75) is arranged at one end of the shielding ring (72) facing the D-shaped bus bar (7), and the mounting plate (75) is inserted into the interval between the two D-shaped bus bars (7) along the left-right direction and is connected with the two D-shaped bus bars (7) through bolts.

7. The bus bar lifting cabinet according to claim 1 or 2, characterized in that the right end of the bus bar main bus bar (14) and the left end of the lifting main bus bar (24) are provided with shielding rings (72).

8. A bus bar lifting cabinet according to claim 3, characterized in that the conductive connection structure is a U-shaped fully insulated bus bar (5) which is bent integrally, the U-shaped fully insulated bus bar (5) comprises a transverse extension section and vertical extension sections at two ends, the upper end of the left end vertical extension section is electrically connected with the outlet side of the solid-sealed polar pole (16), the upper end of the right end vertical extension section is electrically connected with the middle contact seat of the lifting isolating switch (25) through a conductive rod (26), and the conductive rod (26) extends along the up-down direction.

9. The bus-bar lifting cabinet according to claim 8, wherein the lower end of each phase of solid-sealed polar pole (16) and the lower end of the conductive rod (26) of each phase of isolating switch are respectively provided with an environment-friendly outer cone (9), the lower end of the environment-friendly outer cone (9) is provided with a sealing surface, the inside of the environment-friendly outer cone (9) is provided with a conductive rod, the conductive rod passes through the sealing surface downwards, and after the sealing surface is arranged on the lower horizontal partition plate (4), the conductive rod passes through the lower horizontal partition plate (4) from top to bottom to be electrically connected with the vertical extension section of the U-shaped all-insulated bus bar (5).