CN202308841U - Heat radiation device of heavy-current removal switch device - Google Patents
Heat radiation device of heavy-current removal switch device Download PDFInfo
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- CN202308841U CN202308841U CN2011203825652U CN201120382565U CN202308841U CN 202308841 U CN202308841 U CN 202308841U CN 2011203825652 U CN2011203825652 U CN 2011203825652U CN 201120382565 U CN201120382565 U CN 201120382565U CN 202308841 U CN202308841 U CN 202308841U
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- removal switch
- current removal
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Abstract
The technical scheme of the utility model provides a heat radiation device of a heavy-current removal switch device, comprising a bus-bar and a static contact. The bus-bar and the static contact are fixed on a contact box via bolts, a movable contact and the static contact are in matching movable connections via contacts, and the contact box is fixed on a switch cabinet shell via a bolt. The heat radiation device of the heavy-current removal switch device is characterized in that the static contact is at least equipped with a radiating hole, and the bus-bar is at least equipped with a radiating groove. The heat radiation device of the heavy-current removal switch device utilizes an air cycle heat radiation principle, and forms a good circulating air duct via the radiating hole and radiating groove to thereby form air convection, so that the device temperature can be reduced, the temperature rise requirement can be satisfied, the circulating air duct principle is novel, the structure is reasonable, the heat dissipation is good, and the product operation safety can be guaranteed.
Description
Technical field
The utility model relates to a kind of heat abstractor of big electric current withdraw-type switchgear, belongs to the power transmission and distribution technical field.
Background technology
In power transmission and transformation system; Switchgear is its important part; In electric power system, realizing the conveying and the distribution of electric energy; And switch element and other part are to seal to be installed in the cupboard housing, and the temperature rise of dynamic/static contact contact position requires the important technology parameter as the withdraw-type switchgear.High-current switch equipment particularly, the temperature rise influence of product are concerning normal, safety, the reliably operation of equipment in system.
Owing to adopt the some contact when armored withdraw type ac metal closing switch gear dynamic/static contact cooperates, be in again in the contact box of sealing simultaneously, along with the switchgear running current becomes big,, can cause directly burning behind the switchgear overtemperature if heating is more and more serious.Solution commonly used is that high-current switch case partition, contact box mounting panel and wall bushing mounting panel employing corrosion resistant plate, busbar and the silver-plated processing of fixed contact, circuit breaker cart bottom add blower fan (air-supply), the cabinet top adds blower fan (exhausting) and solves problem of temperature rise.But when rated current reached 5000A, temperature rise value was generally 60K-70K, even when surpassing 5000A, temperature rise value surpasses the 65K of national Specification.
Summary of the invention
The purpose of the utility model provides a kind of big electric current withdraw-type switchgear that reduces caloric value.
In order to achieve the above object; The technical scheme of the utility model has provided a kind of heat abstractor of big electric current withdraw-type switchgear, comprises busbar and fixed contact, and busbar and fixed contact adopt bolt on contact box; Moving contact connects through the contacts mates activity with fixed contact; Contact box adopts bolt on the switch cubicle housing, it is characterized in that: on fixed contact, have a louvre at least, on busbar, have a radiating groove at least.
Preferably, said louvre is 3.
Preferably, said radiating groove is 4.
The utility model utilizes the air cycle heat radiation principle, constitutes a good circulation air path through louvre and radiating groove, forms cross-ventilation; Reduce device temperature, satisfy the temperature rise requirement, the circulation air path principle is novel, rational in infrastructure; Thermal diffusivity is good, guarantees the safety of product operation.
Description of drawings
The heat abstractor sketch map of a kind of big electric current withdraw-type switchgear that Fig. 1 provides for the utility model;
Fig. 2 is the busbar sketch map;
Fig. 3 is the fixed contact sketch map;
Fig. 4 is that the B-B of Fig. 3 is to cutaway view.
Embodiment
For making the utility model more obviously understandable, now with a preferred embodiment, and conjunction with figs. elaborates as follows.
As shown in Figure 1, the heat abstractor of a kind of big electric current withdraw-type switchgear that the utility model provides comprises busbar 1, contact box 2, fixed contact 3, moving contact 4.Said busbar 1 adopts bolt on contact box 2 with fixed contact 3; Moving contact 4 and 3 movable connections of fixed contact; Contact box 2 adopts bolt on the switch cubicle housing.
Busbar 1 adopts the copper bar of 4 125X10, and its material is T2, and electroplate satisfies the requirement of equipment ampacity; Contact box 2 adopts the epoxy resin casting to form, because epoxy resin has good insulation property, satisfies the High-Voltage Insulation requirement; Fixed contact 3 adopts T2 copper with moving contact 4, electroplate, the movable connection, some contact.
During the big electric current of switch cubicle operation 5000A; Contact owing to adopting to put with moving contact 4 movable connection places at fixed contact 3; Caloric value is the most serious; The axial flow blower at breaker chamber bottom and cabinet top forms cross-ventilation (the air intake bore breaker chamber in the switchgear front between door and the Xiamen is crossed contact box to the bus-bar room air outlet), but because busbar 1 size L2 is 40X125, contact box 2 opening size L1 are 46X135; Air convection channel is very little, and fixed contact 3 internal high temperature air-flows can't flow out simultaneously.
In conjunction with Fig. 1 and Fig. 2, present embodiment has 4 radiating grooves 6 on busbar 1.In conjunction with Fig. 1, Fig. 3 and Fig. 4, present embodiment has 3 louvres 7 on fixed contact 3.Therefore, as shown in Figure 1, increase air channel 1 and air channel 2, realize the result of ventilating heat dissipation of switchgear.The ventilation process in air channel 1 is: air-flow flows into from the gap between moving contact 4 and the contact box 2, gets into the radiating groove 6 of busbar 1, behind busbar 1, flows out, and realizes the process of a ventilation and heat.
The ventilation process in air channel 2 is: air-flow gets into from moving contact 4 Mume flower contact slits, and through after the contacts mates 5, air communication is crossed the louvre 7 of fixed contact 3, gets into the radiating groove 6 of busbar 1, behind busbar 1, flows out, and realizes the process of a ventilation and heat.
Detect through actual temperature rise test, the fixed contact temperature rise value of former switchgear is between 60K-70K, even above this value, allowing temperature rise value by national standard is 65K, does not reach the national standard requirement.And in the utility model, the fixed contact temperature rise value is between 53K-63K, and requirement is up to state standards.
Claims (3)
1. the heat abstractor of one kind big electric current withdraw-type switchgear; Comprise busbar (1) and fixed contact (3); Busbar (1) and fixed contact (3) adopt bolt on contact box (2), and moving contact (4) connects through contacts mates (5) is movable with fixed contact (3), and contact box (2) adopts bolt on the switch cubicle housing; It is characterized in that: on fixed contact (3), have a louvre (7) at least, on busbar (1), have a radiating groove (6) at least.
2. the heat abstractor of a kind of big electric current withdraw-type switchgear as claimed in claim 1 is characterized in that: said louvre (7) is 3.
3. the heat abstractor of a kind of big electric current withdraw-type switchgear as claimed in claim 1 is characterized in that: said radiating groove (6) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203825652U CN202308841U (en) | 2011-10-10 | 2011-10-10 | Heat radiation device of heavy-current removal switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203825652U CN202308841U (en) | 2011-10-10 | 2011-10-10 | Heat radiation device of heavy-current removal switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202308841U true CN202308841U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203825652U Expired - Lifetime CN202308841U (en) | 2011-10-10 | 2011-10-10 | Heat radiation device of heavy-current removal switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202308841U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103681021A (en) * | 2012-08-31 | 2014-03-26 | 施耐德电器工业公司 | Air cooling structure for circuit breaker |
| CN104064980A (en) * | 2013-03-20 | 2014-09-24 | 广东邦能电气投资有限公司 | Contact box of high-capacity mixed-use high-voltage metal enclosed switchgear |
| CN104242084A (en) * | 2013-06-13 | 2014-12-24 | 通用电气公司 | Pipe orifice used for switching device, switching device with pipe orifice and method thereof |
| CN104617502A (en) * | 2015-01-16 | 2015-05-13 | 广东电网有限责任公司东莞供电局 | High-voltage handcart type switch cabinet contact heat dissipation device |
| CN107147030A (en) * | 2017-07-18 | 2017-09-08 | 江苏大全长江电器股份有限公司 | A kind of contact box for possessing heat sinking function |
| CN108767664A (en) * | 2018-07-28 | 2018-11-06 | 浙江雷安电气有限公司 | A kind of contact box |
| CN110739632A (en) * | 2018-07-20 | 2020-01-31 | 平高集团有限公司 | kinds of contact box and switch cabinet using same |
-
2011
- 2011-10-10 CN CN2011203825652U patent/CN202308841U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103681021A (en) * | 2012-08-31 | 2014-03-26 | 施耐德电器工业公司 | Air cooling structure for circuit breaker |
| CN103681021B (en) * | 2012-08-31 | 2016-03-02 | 施耐德电器工业公司 | For the air-cooled structure of circuit breaker |
| CN104064980A (en) * | 2013-03-20 | 2014-09-24 | 广东邦能电气投资有限公司 | Contact box of high-capacity mixed-use high-voltage metal enclosed switchgear |
| CN104242084A (en) * | 2013-06-13 | 2014-12-24 | 通用电气公司 | Pipe orifice used for switching device, switching device with pipe orifice and method thereof |
| US9685768B2 (en) | 2013-06-13 | 2017-06-20 | General Electric Company | Spout for switchgear, switchgear having spout, and method thereof |
| CN104242084B (en) * | 2013-06-13 | 2018-08-14 | 通用电气公司 | Nozzle for switching device, the switching device with nozzle and its method |
| US10230221B2 (en) | 2013-06-13 | 2019-03-12 | Abb Schweiz Ag | Spout for switchgear, switchgear having spout, and method thereof |
| CN104617502A (en) * | 2015-01-16 | 2015-05-13 | 广东电网有限责任公司东莞供电局 | High-voltage handcart type switch cabinet contact heat dissipation device |
| CN104617502B (en) * | 2015-01-16 | 2017-01-18 | 广东电网有限责任公司东莞供电局 | High-voltage handcart type switch cabinet contact heat dissipation device |
| CN107147030A (en) * | 2017-07-18 | 2017-09-08 | 江苏大全长江电器股份有限公司 | A kind of contact box for possessing heat sinking function |
| CN110739632A (en) * | 2018-07-20 | 2020-01-31 | 平高集团有限公司 | kinds of contact box and switch cabinet using same |
| CN108767664A (en) * | 2018-07-28 | 2018-11-06 | 浙江雷安电气有限公司 | A kind of contact box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |