WO2021135260A1 - 一种高压设备箱 - Google Patents

一种高压设备箱 Download PDF

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Publication number
WO2021135260A1
WO2021135260A1 PCT/CN2020/109199 CN2020109199W WO2021135260A1 WO 2021135260 A1 WO2021135260 A1 WO 2021135260A1 CN 2020109199 W CN2020109199 W CN 2020109199W WO 2021135260 A1 WO2021135260 A1 WO 2021135260A1
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WO
WIPO (PCT)
Prior art keywords
voltage
insulator
low
insulating
partition
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PCT/CN2020/109199
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English (en)
French (fr)
Inventor
李涛
蒋聪健
罗传文
恒放
王雄波
彭鑫
Original Assignee
中车株洲电力机车有限公司
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Application filed by 中车株洲电力机车有限公司 filed Critical 中车株洲电力机车有限公司
Priority to EP20909913.4A priority Critical patent/EP4087072A4/en
Publication of WO2021135260A1 publication Critical patent/WO2021135260A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/14—Supporting insulators
    • H01B17/16—Fastening of insulators to support, to conductor, or to adjoining insulator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/38—Fittings, e.g. caps; Fastenings therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/16—Earthing arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H02B1/48—Mounting of devices therein
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Definitions

  • the invention belongs to equipment for electric locomotives and EMUs, and is specifically a high-voltage equipment box.
  • High-voltage equipment box for electric locomotives and electric train sets.
  • the main high-voltage equipment in the box are: vacuum circuit breakers, high-voltage grounding switches, high-voltage isolation switches, voltage transformers and arresters, etc.
  • the high-voltage isolation switches are equipped with low-voltage components (pneumatic components and DC110V).
  • Low-voltage circuit components vacuum circuit breakers also include low-voltage control parts (driving mechanism, pneumatic components and DC110V low-voltage circuit components).
  • the high-voltage equipment box for electric locomotives and electric vehicle groups installs the above-mentioned equipment in one box.
  • the equipment layout is based on the convenience of high-voltage cables in and out of the line, and does not fully consider the maintenance of high-voltage switch products with a high failure rate. demand. Therefore, when high-voltage switch products have malfunctions in the action mechanism, low-voltage circuit, or pneumatic components, the sealing top cover of the high-voltage equipment box must be opened first, and the equipment must be removed from the box before maintenance. The maintenance is inconvenient.
  • the different high-voltage equipment of the existing high-voltage equipment box is mounted on the side wall of the box, and its insulation performance is ensured by the bottom insulating partition.
  • the volume of the box is occupied by the space of the side wall by the independent high-voltage equipment.
  • some of the space in the existing high-voltage equipment box is left unused, and the overall volume and weight of the box are relatively large, which is not conducive to the load-bearing structure of the roof installation.
  • the technical problem to be solved by the present invention is to overcome the above-mentioned defects and provide a high-pressure equipment box which can reasonably arrange the equipment in the high-pressure box, facilitates the maintenance of the equipment, and reduces the volume of the box body.
  • the technical scheme adopted by the present invention is: a high-voltage equipment box, including a box body, a high-voltage grounding switch, a voltage transformer, a lightning arrester, a high-voltage isolating switch and a vacuum circuit breaker located in the box body, and the box body is divided into low voltage by a partition
  • the low-voltage part of the high-voltage isolating switch and the low-voltage part of the vacuum circuit breaker are installed in the low-voltage zone;
  • the high-voltage part of the high-voltage grounding switch and the vacuum circuit breaker are all installed on the side of the partition located in the high-voltage zone,
  • the high-voltage part of the high-voltage isolating switch is installed on the bottom surface of the high-voltage zone through a supporting insulator, the voltage transformer and the arrester are respectively installed on two opposite side walls of the high-voltage zone;
  • the upper part of the low-voltage zone is provided with an inspection cover,
  • the high-voltage switchgear equipment when the high-voltage switchgear equipment fails, it can be overhauled only by opening the low-voltage area overhaul cover, which improves the safety and convenience of overhaul; in addition, the design of this high-voltage equipment box is based on the high and low voltage partitions and buttons.
  • the principle of modular installation of functions is carried out, that is, the functional division of each high-voltage equipment, such as: the high-voltage isolating switch is divided into insulation modules (high-voltage parts), drive mechanism modules (low-voltage parts), etc., and then used according to the space of the box Reasonably install each functional module in the high-voltage equipment box.
  • the bottom space of the box body is also used when installing the equipment in the high-voltage equipment box, that is, the surplus space of the box body is effectively used, so the volume of the high-voltage equipment box can be reduced.
  • the supporting insulator includes an upper insulator and a lower insulator
  • the bottom of the high-voltage zone is sequentially provided with a bottom insulating partition and a middle insulating partition from bottom to top
  • the high-voltage grounding switch is located above the bottom insulating partition, and Not in contact with the intermediate insulating partition
  • the upper insulator is located on the upper surface of the intermediate insulating partition
  • the lower insulator is located on the lower surface of the intermediate insulating partition
  • the upper insulator, the intermediate insulating partition and the lower insulator are fixedly connected
  • the top of the high-voltage zone is provided with a top-layer insulating partition.
  • the equipment in the high-voltage area of the box and the bottom and top of the box are respectively provided with middle-layer insulation partitions and top-layer insulation partitions.
  • the supporting insulator is divided into upper insulator and lower insulator to avoid opening holes on the insulating partition, but because the lower insulator plays a supporting role, there is a limit in height, so the distance between the middle insulating partition and the bottom of the box will be greater than the high voltage
  • the shortest distance between the grounding switch and the bottom surface of the box during rotation causes the high-voltage grounding switch to interfere with the intermediate insulating partition when it rotates. Therefore, in order to ensure the insulation performance, the high-voltage grounding switch is not provided with a middle insulating partition underneath, but is set separately. There are bottom insulating partitions.
  • the bottom-layer insulating spacer and the middle-layer insulating spacer are respectively fixed on the bottom surface of the box body through a first insulating column and a second insulating column, and the top-layer insulating spacer is fixed to the main top of the box body through a third insulating column. Cover.
  • the insulating partitions are all connected to the box body through the insulating column, which can further ensure its insulating performance.
  • the upper insulator includes an upper flange of an upper insulator and a lower flange of an upper insulator
  • the lower insulator includes an upper flange of a lower insulator, a lower flange of a lower insulator; a lower flange of the upper insulator, a middle insulating partition,
  • the upper flange of the lower insulator and the lower insulator are connected together by fasteners; the lower flange of the lower insulator is fixedly connected with the bottom surface of the box body.
  • the connecting ends of the insulators are all set to a flange structure to facilitate the connection between the insulators and other equipment.
  • both the lower flange of the upper insulator and the upper flange of the lower insulator are provided with mounting grooves, a sealing ring is installed in the mounting groove, and the inner ring of the sealing ring is located outside the fastener.
  • the fastener can be insulated and isolated from the high-voltage equipment above the intermediate insulating partition to ensure the insulation performance in the box.
  • a pressure equalizing ring is installed on the upper part of the upper insulator, so as to reduce the intensity of the electric field where the electric field is concentrated.
  • the beneficial effects of the present invention are: after the high and low voltage partitions of the high-voltage equipment box of the present invention, it is beneficial to the maintenance of low-voltage components with a high failure rate, and improves the safety of inspection and repair; the high-low pressure of the high-voltage equipment box is partitioned, and the high-voltage equipment is divided into For the high and low voltage parts, the installation method combining side wall installation and bottom installation can reduce the height space size of the high-voltage equipment box by at least 1/3, and the weight of the box body by 1/3; multilayer solid insulation is installed in the box body Partitions, and the insulating partitions are supported by insulating pillars to ensure the insulation performance of the high-voltage equipment and the bottom and top surfaces of the cabinet; the support insulator adopts a combination of upper and lower insulators to ensure vertical insulation and isolation, and the upper insulator is A plane seal is used between the insulating partitions to ensure its insulation performance.
  • Figure 1 is a front view of the high-voltage equipment box of the present invention.
  • Figure 2 is a right side view of the high-voltage equipment box of the present invention.
  • Figure 3 is a bottom view of the high-voltage equipment box of the present invention.
  • Figure 4 is a cross-sectional view in the direction of A-A in Figure 3;
  • Figure 5 is a cross-sectional view in the direction of B-B in Figure 3;
  • Figure 6 is a front view of the box in the high-voltage equipment box of the present invention.
  • Figure 7 is a left side view of the box in the high-voltage equipment box of the present invention.
  • Figure 8 is a cross-sectional view in the direction of C-C in Figure 6;
  • Figure 9 is a cross-sectional view in the direction D-D in Figure 6;
  • Figure 10 is a cross-sectional view in the direction of E-E in Figure 6;
  • FIG. 11 is a schematic diagram of the rotation path of the high-voltage grounding switch in the high-voltage equipment box of the present invention.
  • Figure 12 is a front view of the lower insulator in the high-voltage equipment box of the present invention.
  • Figure 13 is a top view of the lower insulator in the high-voltage equipment box of the present invention.
  • Figure 14 is a bottom view of the lower insulator in the high-voltage equipment box of the present invention.
  • Figure 15 is a front view of the upper insulator in the high-voltage equipment box of the present invention.
  • Fig. 16 is an assembly diagram of the supporting insulator in the high-voltage equipment box of the present invention.
  • a high-voltage equipment box includes a box body 3, which is a mechanical installation main body for carrying equipment in the box body, and is welded by aluminum alloy profiles.
  • the box body 3 is provided with external high-voltage introduction The high-voltage cable of the box 4.
  • the inside of the box 3 is divided into two parts, a high-pressure zone and a low-pressure zone, by a partition 3.1 made of aluminum alloy.
  • the main top cover 2, the overhaul cover 1 and the main top cover 2 are installed on the box body by fasteners. During overhaul, only the overhaul cover 1 needs to be disassembled, and the main top cover 2 is in a sealed closed state for a long time.
  • the specific structure in the box 3 includes: high voltage grounding switch 5, voltage transformer 6, bottom insulating partition 7, middle insulating partition 8, pressure equalizing ring 9, lightning arrester 10, high voltage isolating switch 11, vacuum circuit breaker 12, insulation Post 13A, insulating post 13B, top insulating spacer 14, insulating post 15, supporting insulator 16.
  • the high-voltage part of the high-voltage grounding switch 5, the voltage transformer 6, the arrester 10, the high-voltage isolating switch 11 and the high-voltage part of the vacuum circuit breaker 12 are all high-voltage equipment in the box, which is installed in the high-voltage area of the box 3;
  • the low-voltage part 111 of the isolating switch 11 and the low-voltage part 121 of the vacuum circuit breaker 12 are both installed in the low-voltage area in the box 3.
  • the bottom insulating partition 7 and the middle insulating partition 8 isolate the air between the high-voltage equipment in the high-voltage area and the bottom surface of the box 3, thereby increasing the electrical gap and enhancing the insulation performance between the equipment in the box.
  • the top insulating partition 14 isolates The air path between the high-voltage equipment and the top surface of the box body 3 is opened, thereby increasing the electric gap and enhancing the insulation performance between the components in the box.
  • the pressure equalizing ring 9 is installed above the supporting insulator 16 to uniformly support the electric field of the conductive parts above the insulator and improve the insulation performance.
  • the supporting insulator 16 functions as a supporting insulator for conductive connection parts between high-voltage equipment.
  • the insulating pillars 13A and 13B have the same structure, and the insulating pillar 15 and the insulating pillar 13A or 13B are only different in height.
  • the insulating pillar functions as a supporting insulator for the insulating partition.
  • the bottom insulating partition 7, the middle insulating partition 8 and the top insulating partition 14 all have through holes for installing fasteners 13.1, and the insulating pillars 13A, 13B and 15 are all equipped with threaded holes for installing fasteners.
  • Fasteners 13.1 (such as screws) fix the insulating partition and the insulating column together.
  • the specific structure of the box body 3 includes: partition 3.1, insulating column 13A, insulating column 13B, and insulating column mounting seat 3.2 of insulating column 15, voltage transformer mounting seat 3.3, supporting insulator mounting seat 3.4, and high-voltage isolating switch Valve cylinder mechanism mounting base 3.5, arrester mounting base 3.6, vacuum circuit breaker mounting base 3.7, and high-voltage grounding switch mounting base 3.8.
  • the function of the partition 3.1 is to divide the box body 3 into two parts of the high pressure area and the low pressure area.
  • the valve cylinder mechanism mounting seat 3.5 is used to install the pneumatic components of the high voltage isolation switch and the low pressure control circuit assembly-valve cylinder mechanism, vacuum circuit breaker
  • the function of the mounting seat 3.7 is to install the low-voltage components 121 of the vacuum circuit breaker 12; the high-voltage grounding switch 5 is installed on the partition 3.1 through the high-voltage grounding switch mounting seat 3.8, and the supporting insulator 16 is installed on the bottom surface of the box 3 through the supporting insulator mounting seat 3.4
  • the voltage transformer 6 and the lightning arrester 10 are respectively installed on the two opposite side walls of the box 3 through the voltage transformer mounting seat 3.3 and the arrester mounting seat 3.6.
  • the insulating column 13A, the insulating column 13B, and the insulating column 15 are all installed on the insulating column.
  • the insulating column mounting base 3.2 on the box body has threaded holes, and the insulating column 13A, insulating column 13B, and insulating column 15 also have threaded holes for installing fasteners.
  • the bolt 13.2 connects the insulating column with the box body. connected.
  • the high-voltage grounding switch 5 includes a mounting plate 5.1, a rotating rod 5.2 and a contact 5.3.
  • the high-voltage part of the vacuum circuit breaker includes a mounting base 12.1, a vacuum circuit breaker blade 12.2 and a vacuum circuit breaker insulator 12.3; the high-voltage grounding switch 5 passes through the mounting plate 5.1 is fixed on the partition 3.1. Due to the space limitation in the box, the rotating rod 5.2 and the contact 5.3 of the high-voltage grounding switch will interfere with the intermediate insulating partition 8 when rotating to the vacuum circuit breaker blade 12.2. Therefore, in the high-voltage grounding switch 5 There is no middle-layer insulating spacer 8 directly below, but in order to ensure insulation performance, a bottom insulating spacer 7 is added.
  • the insulation performance of the high-voltage equipment box is realized by the above-mentioned insulating partitions, and each high-voltage equipment is installed in the high-voltage equipment box through high and low voltage partitions, thereby greatly reducing the space size of the high-voltage equipment box.
  • the same high-voltage equipment is used.
  • the height space size of the high-voltage equipment box can be reduced by at least 1/3, and the weight of the box body can also be reduced by 1/3.
  • the supporting insulator 16 is divided into two parts, an upper insulator and a lower insulator.
  • the upper insulator includes an upper insulator upper flange 16.1 and an upper insulator lower flange 16.2;
  • the lower insulator includes a lower insulator upper flange 16.3 , The lower flange of the lower insulator 16.4.
  • the upper flange 16.1 of the upper insulator is used to install the conductive connecting parts of high-voltage equipment, the lower flange 16.2 of the upper insulator is on the upper surface of the middle insulating partition 8, and the upper flange 16.3 of the lower insulator is on the lower surface of the middle insulating partition 8, and the upper insulator is lowered.
  • the flange 16.2, the middle insulating partition 8 and the upper flange 16.3 of the lower insulator are connected together by a fastener 16.6; the lower flange 16.4 of the lower insulator is fixedly connected with the supporting insulator mounting seat 3.4 on the bottom of the box.
  • the upper insulator lower flange 16.2 has a threaded hole
  • the lower insulator upper flange 16.3 has a through hole
  • the fastener 16.6 can be a bolt with the head facing down.
  • the lower flange 16.2 of the upper insulator and the upper flange 16.3 of the lower insulator are provided with a mounting groove, and a sealing ring 16.5 is installed in the mounting groove.
  • the inner ring of the sealing ring 16.5 is located on the outside of the fastener 16.6.
  • the high-voltage conductive connecting parts above the intermediate insulating partition 8 are insulated and isolated to ensure insulation performance in a limited space.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Patch Boards (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

一种高压设备箱，包括箱体（3）、位于箱体（3）内的高压接地开关（5）、电压互感器（6）、避雷器（10）、高压隔离开关（11）和真空断路器（12），所述箱体（3）内通过隔板（3.1）分割为低压区和高压区，所述高压隔离开关（11）的低压部分（111）、真空断路器（12）的低压部分（121）均安装在低压区；所述高压接地开关（5）、真空断路器（12）的高压部分均安装在隔板（3.1）位于高压区的一侧，所述高压隔离开关（11）的高压部分通过支撑绝缘子（16）安装在高压区的底面上，所述电压互感器（6）及避雷器（10）分别安装在高压区相对的两侧壁上；所述低压区的上部设有检修盖板（1），所述高压区的上部设有主顶盖（2）。高压设备箱高、低压分区后有利于高压设备的检修，且高压设备采用侧壁安装与底面安装相结合的安装方式，可减小高压设备箱整体的体积。

Description

一种高压设备箱 技术领域
本发明属于电力机车及动车组用设备，具体为一种高压设备箱。
背景技术
电力机车及电动车组用高压设备箱，箱内主要高压设备为：真空断路器、高压接地开关、高压隔离开关、电压互感器及避雷器等，其中高压隔离开关设有低压部件(气动元件及DC110V低压电路元件)，真空断路器也包括低压控制部分(驱动机构、气动元件及DC110V低压电路元件)。
目前电力机车及电动车组用高压设备箱将上述各设备统一安装于一个箱体内，设备布置是以方便高压电缆进出线为准则，而未充分考虑到故障率较高的高压开关类产品的检修需求。因此，当高压开关类产品出现动作机构故障、低压线路故障或气动元件故障等现象时，须先打开高压设备箱的密封顶盖，将设备从箱内拆出后再进行检修，检修不方便。此外，现有高压设备箱的不同高压设备均侧挂安装于箱体侧壁上，通过底部绝缘隔板保证其绝缘性能，此类安装结构中箱体的体积由独立高压设备占用侧壁的空间决定，导致现有高压设备箱部分空间闲置，箱体的整体体积及重量较大，不利于车顶安装结构承重。
发明内容
本发明要解决的技术问题是：克服上述缺陷，提供一种可合理布置高压箱内设备、便于设备检修、减小箱体体积的高压设备箱。
本发明采用的技术方案是：一种高压设备箱，包括箱体、位于箱 体内的高压接地开关、电压互感器、避雷器、高压隔离开关和真空断路器，所述箱体内通过隔板分割为低压区和高压区，所述高压隔离开关的低压部分、真空断路器的低压部分均安装在低压区；所述高压接地开关、真空断路器的高压部分均安装在隔板位于高压区的一侧，所述高压隔离开关的高压部分通过支撑绝缘子安装在高压区的底面上，所述电压互感器及避雷器分别安装在高压区相对的两侧壁上；所述低压区的上部设有检修盖板，所述高压区的上部设有主顶盖。
上述方案中，当高压开关类设备出现故障时，只需打开低压区检修盖板便可进行检修，提高了检修安全性和便捷性；此外，此高压设备箱的设计是基于高低压分区及按功能进行模块化安装的原则进行，即先将各高压设备进行功能性划分，如：高压隔离开关划分为绝缘模块(高压部分)、驱动机构模块(低压部分)等，然后根据箱体的空间利用率将各个功能模块合理安装在高压设备箱内。因此，在安装高压设备箱内设备时除利用了箱体侧壁空间外，还利用了箱体底部空间，即有效利用了箱体的多余空间，因此可减小高压设备箱的体积。
优选的，所述支撑绝缘子包括上绝缘子和下绝缘子，所述高压区的底部由下至上依次设有底层绝缘隔板、中层绝缘隔板，所述高压接地开关位于底层绝缘隔板的上方，且不与中层绝缘隔板接触；所述上绝缘子位于中层绝缘隔板的上表面，所述下绝缘子位于中层绝缘隔板的下表面，所述上绝缘子、中层绝缘隔板和下绝缘子固定连接；所述高压区的顶部设置有顶层绝缘隔板。
由于高压设备箱箱体的体积减小，为了保证绝缘性能，在箱体高 压区的设备与箱体底部及顶部分别设有中层绝缘隔板、顶层绝缘隔板，考虑到支撑绝缘子的绝缘性能，将支撑绝缘子分为上绝缘子和下绝缘子，以避免在绝缘隔板上开孔，但由于下绝缘子起到支撑作用，在高度上有限制，因此中层绝缘隔板与箱体底面的距离会大于高压接地开关转动过程中与箱体底面的最短距离，导致高压接地开关转动时会与中层绝缘隔板干涉，因此，为了保证绝缘性能，高压接地开关的下方不设置中层绝缘隔板，而是单独设有底层绝缘隔板。
优选的，所述底层绝缘隔板、中层绝缘隔板分别通过第一绝缘柱、第二绝缘柱固定在箱体底面上，所述顶层绝缘隔板通过第三绝缘柱固定在箱体的主顶盖上。
上述方案中，绝缘隔板均通过绝缘柱与箱体连接，可以进一步保证其绝缘性能。
优选的，所述上绝缘子包括上绝缘子上法兰和上绝缘子下法兰，所述下绝缘子包括下绝缘子上法兰、下绝缘子下法兰；所述上绝缘子下法兰、中层绝缘隔板、及下绝缘子上法兰通过紧固件连接在一起；所述下绝缘子下法兰与箱体底面固定连接。
绝缘子的连接端均设置为法兰结构，便于绝缘子与其他设备间连接。
优选的，所述上绝缘子下法兰、下绝缘子上法兰上均设有安装槽，所述安装槽内安装有密封圈，所述密封圈的内圈位于紧固件的外侧。
上述设置中，安装槽内安装密封圈后，可将紧固件与中层绝缘隔板上方的高压设备绝缘隔离，确保箱体内的绝缘性能。
优选的，所述上绝缘子的上部安装有均压环，从而降低电场集中处的电场强度。
本发明的有益效果是：本发明高压设备箱箱体高低压分区后，有利于故障率较高的低压部件的检修，提高了检修安全性；高压设备箱箱体高低压分区，高压设备划分为高、低压部分，并采用侧壁安装与底面安装相结合的安装方式，可将高压设备箱的高度空间尺寸缩减至少1/3，箱体重量也减轻1/3；箱体内设置多层固体绝缘隔板，且绝缘隔板采用绝缘支柱支撑，保证了高压设备与箱体底面与顶面的绝缘性能；支撑绝缘子采用上下两个绝缘子组合的方案确保了垂直方向的绝缘隔离，且其上绝缘子与绝缘隔板间采用平面密封保证其绝缘性能。
附图说明
图1是本发明高压设备箱的主视图；
图2是本发明高压设备箱的右视图；
图3是本发明高压设备箱的仰视图；
图4是图3中A-A方向的剖视图；
图5是图3中B-B方向的剖视图；
图6是本发明高压设备箱中箱体的主视图；
图7是本发明高压设备箱中箱体的左视图；
图8是图6中C-C方向的剖视图；
图9是图6中D-D方向的剖视图；
图10是图6中E-E方向的剖视图；
图11是本发明高压设备箱中高压接地开关的旋转路径示意图；
图12是本发明高压设备箱中下绝缘子的主视图；
图13是本发明高压设备箱中下绝缘子的俯视图；
图14是本发明高压设备箱中下绝缘子的仰视图；
图15是本发明高压设备箱中上绝缘子的主视图；
图16是本发明高压设备箱中支撑绝缘子的组装图。
具体实施方式
下面结合实施例和附图对本发明做进一步说明。
如图1～16所示，一种高压设备箱，包括箱体3，箱体3是承载箱体内设备的机械安装主体，由铝合金型材焊接而成，箱体3上设有将外部高压引入箱体的高压电缆4。该箱体3内部通过铝合金的隔板3.1分割为高压区和低压区两部分，箱体上部有两个顶盖，包括用于低压区检修的检修盖板1，及用于高压设备安装的主顶盖2，检修盖板1及主顶盖2通过紧固件安装在箱体上，在检修时，仅需拆卸检修盖板1即可，主顶盖2长期处于密封闭合状态。
箱体3内的具体结构包括：高压接地开关5，电压互感器6，底层绝缘隔板7，中层绝缘隔板8，均压环9，避雷器10，高压隔离开关11，真空断路器12，绝缘柱13A，绝缘柱13B，顶层绝缘隔板14，绝缘柱15，支撑绝缘子16。上述部件中，高压接地开关5、电压互感器6、避雷器10、高压隔离开关11的高压部分和真空断路器12的高压部分均为箱内高压设备，安装在箱体3内的高压区；高压隔离开关11的低压部分111、真空断路器12的低压部分121均安装在箱体 3内的低压区。
底层绝缘隔板7及中层绝缘隔板8隔离开高压区的高压设备与箱体3底面间的空气，从而增大电气间隙，增强箱内设备间的绝缘性能，同时，顶层绝缘隔板14隔离开高压设备与箱体3顶面间的空气路径，从而增大电气间隙，增强箱内部件间绝缘性能。
均压环9安装在支撑绝缘子16上方，用于均匀支撑绝缘子上方导电部件的电场，提高绝缘性能。支撑绝缘子16的作用是作为各高压设备间导电连接部件的支撑绝缘体。绝缘柱13A、13B结构相同，绝缘柱15和绝缘柱13A或13B仅高度不同，绝缘柱的作用是作为绝缘隔板的支撑绝缘体。底层绝缘隔板7、中层绝缘隔板8和顶层绝缘隔板14上均具有安装紧固件13.1的通孔，绝缘柱13A、绝缘柱13B与绝缘柱15上均具有安装紧固件的螺纹孔，紧固件13.1(例如螺钉)将绝缘隔板与绝缘柱固定连接在一起。
本发明中，箱体3具体结构包括：隔板3.1、绝缘柱13A、绝缘柱13B和绝缘柱15的绝缘柱安装座3.2、电压互感器安装座3.3、支撑绝缘子安装座3.4、高压隔离开关的阀缸机构安装座3.5、避雷器安装座3.6、真空断路器安装座3.7以及高压接地开关安装座3.8。
隔板3.1的作用是将箱体3分隔为高压区和低压区两部分，阀缸机构安装座3.5的作用是安装高压隔离开关的气动元件及低压控制电路集合体-阀缸机构，真空断路器安装座3.7的作用是安装真空断路器12的低压部件121；高压接地开关5通过高压接地开关安装座3.8安装在隔板3.1上，支撑绝缘子16通过支撑绝缘子安装座3.4 安装在箱体3的底面上，电压互感器6及避雷器10分别通过电压互感器安装座3.3、避雷器安装座3.6安装在箱体3相对的两侧壁上，绝缘柱13A、绝缘柱13B、绝缘柱15均安装在绝缘柱安装座3.2上，其中箱体上的绝缘柱安装座3.2上具有螺纹孔，绝缘柱13A、绝缘柱13B、绝缘柱15上也具有安装紧固件的螺纹孔，螺栓13.2将绝缘柱与箱体连接在一起。
本发明中，高压接地开关5包括安装板5.1、转杆5.2及触头5.3，真空断路器高压部分包括安装底板12.1、真空断路器刀片12.2及真空断路器绝缘子12.3；高压接地开关5通过安装板5.1固定在隔板3.1上，由于箱内空间限制，高压接地开关的转杆5.2及触头5.3旋转至真空断路器刀片12.2过程中会与中层绝缘隔板8干涉，因此在高压接地开关5的正下方不设置中层绝缘隔板8，但为了保证绝缘性能，增加了底层绝缘隔板7。
本实施例中，通过上述绝缘隔板实现高压设备箱的绝缘性能，并通过高、低压分区将各高压设备安装到高压设备箱内，从而较大程度缩减了高压设备箱的空间尺寸。在本实施例中，采用相同的高压设备，根据本实施例的方案可将高压设备箱的高度空间尺寸缩减至少1/3，箱体重量也减轻1/3。
本实施例中，为进一步加强绝缘性能，支撑绝缘子16分为上绝缘子及下绝缘子两部分，上绝缘子包括上绝缘子上法兰16.1、上绝缘子下法兰16.2；下绝缘子包括下绝缘子上法兰16.3，下绝缘子下法兰16.4。上绝缘子上法兰16.1用于安装高压设备的导电连接部件， 上绝缘子下法兰16.2在中层绝缘隔板8上表面，下绝缘子上法兰16.3在中层绝缘隔板8下表面，上绝缘子下法兰16.2、中层绝缘隔板8及下绝缘子上法兰16.3三者通过紧固件16.6连接至一起；下绝缘子下法兰16.4与箱体底面的支撑绝缘子安装座3.4固定连接。
其中，上绝缘子下法兰16.2上为螺纹孔，下绝缘子上法兰16.3上为通孔，紧固件16.6可为头部朝下的螺栓。
进一步的，上绝缘子下法兰16.2及下绝缘子上法兰16.3上具有安装槽，安装槽内安装有密封圈16.5，密封圈16.5的内圈位于紧固件16.6的外侧，将紧固件16.6与中层绝缘隔板8以上的高压导电连接部件间绝缘隔离，以确保有限空间内的绝缘性能。

Claims (6)

  1. 一种高压设备箱，包括箱体(3)、位于箱体(3)内的高压接地开关(5)、电压互感器(6)、避雷器(10)、高压隔离开关(11)和真空断路器(12)，其特征在于，所述箱体(3)内通过隔板(3.1)分割为低压区和高压区，所述高压隔离开关的低压部分(111)、真空断路器的低压部分(121)均安装在低压区；所述高压接地开关(5)、真空断路器(12)的高压部分均安装在隔板(3.1)位于高压区的一侧，所述高压隔离开关(11)的高压部分通过支撑绝缘子(16)安装在高压区的底面上，所述电压互感器(6)及避雷器(10)分别安装在高压区相对的两侧壁上；所述低压区的上部设有检修盖板(1)，所述高压区的上部设有主顶盖(2)。
  2. 如权利要求1所述的一种高压设备箱，其特征在于，所述支撑绝缘子(16)包括上绝缘子和下绝缘子，所述高压区的底部由下至上依次设有底层绝缘隔板(7)、中层绝缘隔板(8)，所述高压接地开关(5)位于底层绝缘隔板(7)的上方，且不与中层绝缘隔板(8)接触；所述上绝缘子位于中层绝缘隔板(8)的上表面，所述下绝缘子位于中层绝缘隔板(8)的下表面，所述上绝缘子、中层绝缘隔板(8)和下绝缘子固定连接；所述高压区的顶部设置有顶层绝缘隔板(14)。
  3. 如权利要求2所述的一种高压设备箱，其特征在于，所述底层绝缘隔板(7)、中层绝缘隔板(8)分别通过第一绝缘柱(15)、第二绝缘柱(13A)固定在箱体底面上，所述顶层绝缘隔板(14)通过第三绝缘柱(13B)固定在箱体的主顶盖(2)上。
  4. 如权利要求2所述的一种高压设备箱，其特征在于，所述上绝缘子包括上绝缘子上法兰(16.1)和上绝缘子下法兰(16.2)，所述下绝缘子包括下绝缘子上法兰(16.3)、下绝缘子下法兰(16.4)；所述上绝缘子下法兰(16.2)、中层绝缘隔板(8)、及下绝缘子上法兰(16.3)通过紧固件(16.6)连接在一起；所述下绝缘子下法兰(16.4)与箱体(3)底面固定连接。
  5. 如权利要求4所述的一种高压设备箱，其特征在于，所述上绝缘子下法兰(16.2)、下绝缘子上法兰(16.3)上均设有安装槽，所述安装槽内安装有密封圈(16.5)，所述密封圈(16.5)的内圈位于紧固件(16.6)的外侧。
  6. 如权利要求2～5任一项所述的一种高压设备箱，其特征在于，所述上绝缘子的上部安装有均压环(9)。
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