CN204067953U

CN204067953U - Voltage switchgear

Info

Publication number: CN204067953U
Application number: CN201420467318.6U
Authority: CN
Inventors: 贺海清; 向大斌; 张�林
Original assignee: YUGUANG ELECTRIC Co Ltd
Current assignee: YUGUANG ELECTRIC Co Ltd
Priority date: 2014-08-19
Filing date: 2014-08-19
Publication date: 2014-12-31
Anticipated expiration: 2024-08-19

Abstract

The utility model discloses a kind of voltage switchgear, aim to provide a kind of voltage switchgear, effective reduction internal temperature, the safe operation of guarantee equipment, its drip irrigation device is that breaker chamber comprises moving contact, fixed contact and contact arm bearing, be respectively equipped with ventilation axial flow blower at the bottom of cabinet top ventilation axial flow blower and cabinet at the bottom of cabinet top and cabinet, at the bottom of cabinet top, cabinet, ventilation axial flow blower is coaxially arranged, and ventilation axial flow blower at the bottom of cabinet is positioned at the side on dynamic and static contact cabinet top dorsad; At the bottom of cabinet, the side on cabinet top is provided with draft chamber dorsad, and at the bottom of cabinet, ventilation axial flow blower is fixedly connected in draft chamber, and draft chamber comprises base plate and sidewall, and sidewall is provided with ventilation hole, and base plate is made up of filter screen, and the utility model is applicable to voltage switchgear.

Description

Voltage switchgear

Technical field

The utility model relates to a kind of cabinet manufacturing technology field, and more particularly, it relates to a kind of voltage switchgear.

Background technology

Along with the development of society, the progress in epoch, along with the continuous increase of power load, complete cabinet ageing of insulation is serious with heating, causes serious accident frequent.When load current constantly increases, in complete cabinet, vertical bus bar and horizontal busbar are under the acting in conjunction of current field, complete cabinet internal upper part produces and strengthens alternating magnetic field, and magnetic field intensity becomes non-linear powerful increasing trend, electromotive force is induced in cabinet and side plate, and produce a large amount of spuious eddy current, because cabinet steel plate is permeability magnetic material, resistance is also very large, causes cabinet to generate heat serious, ageing of insulation, so the fever phenomenon that the spuious eddy current of cabinet causes will be reduced, switch cabinet must select nonmagnetic substance, causes heating, make ageing of insulation to cut off spuious eddy current.

The complete cabinet bus of current operation adopts heat shrink technique to carry out totally-enclosed insulation processing, but in long-time big current situation, all have cracking in various degree and stripping, brings potential safety hazard to dynamic row, advises not adopting all insulation process to heavy current busbar room for this reason; In addition due to the increase of load, at narrow and small breaker chamber, bus-bar room equipment generation heat not easily distributes long-time dynamic guild and causes the temperature of relevant device environment to raise, thus reduces insulation.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of voltage switchgear, effectively reduces internal temperature, ensures the safe operation of equipment.

For achieving the above object, the utility model provides following technical scheme: a kind of voltage switchgear, comprise housing, described housing comprises at the bottom of cabinet top and cabinet, bus-bar room is comprised in described housing, connecting rod, connect connecting lever, connection rotating shaft, rotary shaft rack, line side spacer link, bus bar side isolation (ground connection) connecting rod, lock operation handle, isolated operation mechanism, back-moving spring, breaker open operation connecting rod, isolated operation panel and be provided with the breaker chamber of circuit breaker, described breaker chamber comprises moving contact, fixed contact and contact arm bearing, ventilation axial flow blower at the bottom of cabinet top ventilation axial flow blower and cabinet is respectively equipped with at the bottom of described cabinet top and cabinet, described cabinet top, at the bottom of cabinet, ventilation axial flow blower is coaxially arranged, at the bottom of described cabinet, ventilation axial flow blower is positioned at dynamic, the side on fixed contact cabinet top dorsad,

At the bottom of described cabinet, the side on cabinet top is provided with draft chamber dorsad, and at the bottom of described cabinet, ventilation axial flow blower is fixedly connected in draft chamber, and described draft chamber comprises base plate and sidewall, and described sidewall is provided with ventilation hole, and described base plate is made up of filter screen.

By adopting technique scheme, install that top board, base plate ventilation axial flow blower ventilate to enclosure interior, water conservancy diversion, heat radiation, effectively reduce the operating temperature of breaker chamber and bus-bar room, to ensure the electric equipment safe operation in housing;

And, described cabinet top, at the bottom of cabinet, ventilation axial flow blower is coaxially arranged, stable guiding air-flow can be produced, increase air flows and reduces temperature rise, the quick aging of switch cubicle element can be prevented simultaneously, be conducive to the long-time large load operation of equipment, conductive clip is the part that vacuum bubbles interior lower end moving contact is connected with contact arm bearing, the mode of normally stepping up is conducted electricity, this is a position of whole circuit breaker, so, at the bottom of described cabinet, ventilation axial flow blower is positioned at dynamic, the side on fixed contact cabinet top dorsad, radiating effect is remarkable, the base plate be made up of filter screen can anti-gray dust-proof, through hole on sidewall then ensure that the circulation of air.

The utility model is set to further: described breaker open operation mechanism and isolated operation mechanism are connected by the connecting rod be made up of round steel material and are formed and be rigidly connected.

By adopting technique scheme, because round steel has larger deformability before being pulled off, therefore, the feature that round steel plasticity is strong can be utilized, improve the reliability and useful life that self use, be the powerful guarantee of on-load deciliter isolation, simplify operation sequence, occasionally can reach the requirement of the anti-perfect combination of electric power five.

The utility model is set to further: described filter screen is equipped with some uncinuses relative to the one side of ventilation duct;

The mesh of described filter screen is equilateral triangle structure, and described uncinus is positioned at the summit place of each mesh.

By adopting technique scheme, filter screen being set and can preventing from floor-dust, hair from directly being run by ventilation axial flow blower at the bottom of cabinet top, cabinet the air-flow produced importing in cabinet, and block, be wound around ventilation axial flow blower at the bottom of cabinet and damage; In addition, equilateral triangle structure be not only geometric figure, most stable structure in triangle especially, therefore, it is possible to the wind-force of opposing air pump, extends the useful life of filter screen; Then tiny pont that uncinus can make some pass filter screen is set, hair obtains secondary filter, caught on by uncinus, and, can with filter screen together easy cleaning.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model voltage switchgear embodiment;

Fig. 2 is the schematic diagram of the utility model voltage switchgear embodiment;

Fig. 3 is the structural representation of the filter screen in the utility model.

Reference numeral: 11, cabinet top; 12, at the bottom of cabinet; 13, uncinus; 21, bus-bar room; 22, connecting rod; 23, connecting lever is connected; 24, connection rotating shaft; 25, rotary shaft rack; 26, line side spacer link; 27, bus bar side isolation (ground connection) connecting rod; 28, lock operation handle; 29, isolated operation mechanism; 31, back-moving spring; 32, breaker open operation connecting rod; 33, isolated operation panel; 4, breaker chamber; 41, moving contact; 52, fixed contact; 53, contact arm bearing; 6, cabinet top ventilation axial flow blower; 7, ventilation axial flow blower at the bottom of cabinet; 8, draft chamber; 81, sidewall; 82, base plate; 83, ventilation hole.

Embodiment

Referring to figs. 1 through Fig. 3, the utility model voltage switchgear embodiment is described further.

As shown in Figure 1 to Figure 3, a kind of voltage switchgear, operating sequence: 1, power failure operation and maintenance, a point circuit breaker → handle is threaded to (disjunction position) → point line side isolation → point bus bar side isolates → closes earthed switch (power failure operation terminates) → maintenance → handle and be threaded to (maintenance position) → open Qianmen → practice backdoorism (now isolating and circuit breaker all akinesias); 2, pass back door → pass Qianmen → handle is threaded to (disjunction position) → point earthed switch → conjunction bus bar side isolation → zygonema trackside isolation → handle and is threaded to (service position) → conjunction circuit breaker (power transmission terminates);

Comprise housing, described housing to comprise at the bottom of cabinet top 11 and cabinet 12, bus-bar room 21 is comprised in described housing, connecting rod 22, connect connecting lever 23, connection rotating shaft 24, rotary shaft rack 25, line side spacer link 26, bus bar side isolation (ground connection) connecting rod 27, lock operation handle 28, isolated operation mechanism 29, back-moving spring 31, breaker open operation connecting rod 32, isolated operation panel 33 and be provided with the breaker chamber 4 of circuit breaker, described breaker chamber 4 comprises moving contact 41, fixed contact 52 and contact arm bearing 53, described cabinet top 11 with 12 be respectively equipped with ventilation axial flow blower 7 at the bottom of cabinet top ventilation axial flow blower 6 and cabinet at the bottom of cabinet, described cabinet top 11, at the bottom of cabinet, ventilation axial flow blower 7 is coaxially arranged, at the bottom of described cabinet, ventilation axial flow blower 7 is positioned at dynamic, the side on fixed contact 52 cabinet top 11 dorsad,

At the bottom of described cabinet, the side on 12 cabinet tops 11 is dorsad provided with draft chamber 8, and ventilation axial flow blower 7 at the bottom of described cabinet is fixedly connected in draft chamber 8, and described draft chamber 8 comprises base plate 82 and sidewall 81, described sidewall 81 is provided with ventilation hole 83, described base plate 82 is made up of filter screen that (it should be noted that, described base plate 82 can be made up of the filter screen of platy structure, and structural strength is high herein, enabling capabilities is strong, be preferably metal material, as aluminium alloy, lightweight, hardness is large, good heat conductivity).

Install that top board 11, base plate 82 ventilate that axial flow blower ventilates to enclosure interior, water conservancy diversion, heat radiation, effectively reduce the operating temperature of breaker chamber 4 and bus-bar room 21, to ensure the electric equipment safe operation in housing;

And, described cabinet top 11, at the bottom of cabinet, ventilation axial flow blower 7 is coaxially arranged, stable guiding air-flow can be produced, increase air flows and reduces temperature rise, the quick aging of switch cubicle element can be prevented simultaneously, be conducive to the long-time large load operation of equipment, conductive clip is the part that vacuum bubbles interior lower end moving contact 41 is connected with contact arm bearing 53, the mode of normally stepping up is conducted electricity, this is a position of whole circuit breaker, so, at the bottom of described cabinet, ventilation axial flow blower 7 is positioned at dynamic, the side on fixed contact 52 cabinet top 11 dorsad, radiating effect is remarkable, the base plate 82 be made up of filter screen can anti-gray dust-proof, through hole on sidewall 81 then ensure that the circulation of air.

Described breaker open operation mechanism and isolated operation mechanism 29 are connected by the connecting rod 22 be made up of round steel material and are formed and be rigidly connected.

Because round steel has larger deformability before being pulled off, therefore, it is possible to utilize the feature that round steel plasticity is strong, improve the reliability and useful life that self use, be the powerful guarantee of on-load deciliter isolation, simplify operation sequence, occasionally can reach the requirement of the anti-perfect combination of electric power five.

Described filter screen is equipped with some uncinuses 13 relative to the one side of ventilation duct;

The mesh of described filter screen is equilateral triangle structure, and described uncinus 13 is positioned at the summit place of each mesh.

Arranging filter screen can prevent floor-dust, hair from directly being imported in cabinet by the air-flow that ventilation axial flow blower 7 at the bottom of cabinet top 11, cabinet runs generation, and blocks, be wound around ventilation axial flow blower 7 at the bottom of cabinet and damage; In addition, equilateral triangle structure be not only geometric figure, most stable structure in triangle especially, therefore, it is possible to the wind-force of opposing air pump, extends the useful life of filter screen; Then tiny pont that uncinus 13 can make some pass filter screen is set, hair obtains secondary filter, caught on by uncinus 13, and, can with filter screen together easy cleaning.

The above makes preferred implementation of the present utility model, and under not departing from the prerequisite of the utility model principle for the person of ordinary skill of the art, can also make some modification and improvement, these also should be considered as protection range of the present utility model.

Claims

1. a voltage switchgear, comprise housing, described housing comprises at the bottom of cabinet top and cabinet, bus-bar room is comprised in described housing, connecting rod, connect connecting lever, connection rotating shaft, rotary shaft rack, line side spacer link, bus bar side isolation (ground connection) connecting rod, lock operation handle, isolated operation mechanism, back-moving spring, breaker open operation connecting rod, isolated operation panel and be provided with the breaker chamber of circuit breaker, described breaker chamber comprises moving contact, fixed contact and contact arm bearing, it is characterized in that: at the bottom of described cabinet top and cabinet, be respectively equipped with ventilation axial flow blower at the bottom of cabinet top ventilation axial flow blower and cabinet, described cabinet top, at the bottom of cabinet, ventilation axial flow blower is coaxially arranged, at the bottom of described cabinet, ventilation axial flow blower is positioned at dynamic, the side on fixed contact cabinet top dorsad,

2. voltage switchgear according to claim 1, is characterized in that: described breaker open operation mechanism and isolated operation mechanism are connected by the connecting rod be made up of round steel material and are formed and be rigidly connected.

3. voltage switchgear according to claim 1 and 2, is characterized in that: described filter screen is equipped with some uncinuses relative to the one side of ventilation duct;