CN201514882U - Large current knife type high-pressure switch - Google Patents
Large current knife type high-pressure switch Download PDFInfo
- Publication number
- CN201514882U CN201514882U CN2009200342304U CN200920034230U CN201514882U CN 201514882 U CN201514882 U CN 201514882U CN 2009200342304 U CN2009200342304 U CN 2009200342304U CN 200920034230 U CN200920034230 U CN 200920034230U CN 201514882 U CN201514882 U CN 201514882U
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- contact
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- fingertip
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Abstract
The utility model relates to the manufacture and design field of high-pressure switches, and discloses a large current knife type high-pressure switch. The large current knife type high-pressure switch comprises a fixed contact seat, a moving contact, an insulating pull rod which is fixed on the moving contact and a support base which is articulated with the movable contact. The large current knife type high-pressure switch is characterized in that the moving contact comprises a contact finger box and two rows of contact fingers which are arranged in an overlapping way; the front side of the contact finger box is provided with a card; one ends of the two rows of the contact fingers are respectively inserted from the front side of the contact finger box, positioned at the two sides of the card, and tightly adhered to the side wall of the contact finger box; the other ends of the two rows of the contact fingers extend out of the contact finger box to clamp the fixed contact seat; stretched springs are respectively arranged between the two rows of the contact fingers and at the two sides of the card; and the back side of the contact finger box is provided with an articulating head which is connected with the support seat, and the bottom surface of the contact finger box is provided with a fixed lug which is connected with the insulating pull rod.
Description
Technical field
The utility model relates to high-voltage switch gear manufacturing and design field, particularly a kind of big electric current guillotine type high-voltage switch gear.
Background technology
Along with the miniaturization of high voltage switchgear and improving constantly of use electric current, the continuous minimizing of the size of product and weight, the heating problem of high voltage switchgear major loop displays gradually.Main circuit conductor in the high voltage switchgear and each element are when normal operating conditions and short circuit operating state, owing to resistance loss, contact resistance loss, the dielectric loss of insulating material and the eddy current and the magnetic hysteresis loss of steel member of main circuit conductor itself generates heat.The heating meeting produces various harmful effects to electrical equipment.As: the metal material temperature raises, and can cause anneal of material softening, and mechanical strength descends; When conductor contact junction temperature was too high, contact connected the strong oxidation of surface meeting, and creep takes place, and contact resistance is increased; Insulating material is subjected to high temperature action for a long time, will become fragile gradually and wear out, so that the decreasing insulating of insulating material, shorten dramatically useful life.The problem of temperature rise that how to reduce switchgear will be to improve the key technical problem of high voltage switchgear rated current.
Summary of the invention
Technical problem to be solved in the utility model is exactly how to reduce the problem of temperature rise of switchgear, and a kind of big electric current guillotine type high-voltage switch gear is provided.
In order to solve the problems of the technologies described above, the utility model is achieved by the following technical solutions.
A kind of big electric current guillotine type high-voltage switch gear, comprise static contact seat, moving contact, be fixed on insulated tension pole on the moving contact and the bearing hinged with moving contact, it is characterized in that, described moving contact comprises fingertip box and two stacked row's fingertips, the front of fingertip box is provided with card, one end of two row's fingertips inserts from the front of fingertip box respectively, be positioned at the both sides of card and be close to the sidewall of fingertip box, the other end stretches out fingertip box clamping static contact seat, is positioned at the card both sides between two row's fingertips and is respectively arranged with back-moving spring; Fingertip box back is provided with the articulated joint that connects bearing, and the bottom surface is provided with the fixedly ear that connects insulated tension pole.
Further improvement of the utility model is: be respectively arranged with radiating wing outside the two side of described fingertip box; Described fingertip box adopts aluminium to make.
Big electric current guillotine type high-voltage switch gear of the present utility model utilizes a plurality of fingertips to come the static contact seat of contact-making switch when normal operating conditions and short circuit operating state, and the contact that increases contact is counted, and the contact resistance at contact place is reduced; Utilize the fingertip box of being with radiating wing can increase the area of dissipation at contact place effectively, heat-sinking capability is improved.Therefore, the utility model is simple in structure, cost is low, have good thermodynamic property, can be widely used in the large-current high-voltage switchgear.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
Fig. 1 is a kind of structural representation of big electric current guillotine type high-voltage switch gear;
Fig. 2 is the axle side schematic diagram of moving contact;
Fig. 3 is the schematic top plan view of moving contact;
Fig. 4 is the A-A cutaway view of Fig. 3.
Embodiment
With reference to Fig. 1, be a kind of big electric current guillotine type high-voltage switch gear, mainly comprise: having static contact seat 1, moving contact 2 that insulation supports, being fixed on insulated tension pole 3 on the moving contact 2 and the bearing 3 hinged with moving contact 2.
With reference to Fig. 2, Fig. 3, Fig. 4, moving contact 2 comprises fingertip box 24 and two stacked row's fingertips 22, and fingertip box 24 back are provided with the articulated joint 25 that connects bearing 4, and the bottom surface is provided with the fixedly ear 23 that connects insulated tension pole 3.Fingertip box 24 adopts aluminium to make, the front clamping Metallic card 26 of fingertip box 24, one end of two row's fingertips 22 inserts from the front of fingertip box 24 respectively, be positioned at the both sides of card 26 and be close to the sidewall of fingertip box 24, the other end stretches out fingertip box 24, be positioned at card 26 both sides between two row's fingertips 22 and be respectively arranged with back-moving spring 21, guarantee that fingertip 22 contacts with the tight of static contact seat 1.Be respectively arranged with undulatory radiating wing outside the two side of fingertip box 24, help the heat radiation of moving contact 2 more, to improve its through-current capability.
Claims (3)
1. one kind big electric current guillotine type high-voltage switch gear, comprise static contact seat, moving contact, be fixed on insulated tension pole on the moving contact and the bearing hinged with moving contact, it is characterized in that, described moving contact comprises fingertip box and two stacked row's fingertips, the front of fingertip box is provided with card, one end of two row's fingertips inserts from the front of fingertip box respectively, be positioned at the both sides of card and be close to the sidewall of fingertip box, the other end stretches out fingertip box clamping static contact seat, is positioned at the card both sides between two row's fingertips and is respectively arranged with back-moving spring; Fingertip box back is provided with the articulated joint that connects bearing, and the bottom surface is provided with the fixedly ear that connects insulated tension pole.
2. a kind of big electric current guillotine type high-voltage switch gear according to claim 1 is characterized in that, is respectively arranged with radiating wing outside the two side of described fingertip box.
3. a kind of big electric current guillotine type high-voltage switch gear according to claim 1 is characterized in that, described fingertip box adopts aluminium to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200342304U CN201514882U (en) | 2009-08-14 | 2009-08-14 | Large current knife type high-pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200342304U CN201514882U (en) | 2009-08-14 | 2009-08-14 | Large current knife type high-pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514882U true CN201514882U (en) | 2010-06-23 |
Family
ID=42486293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200342304U Expired - Lifetime CN201514882U (en) | 2009-08-14 | 2009-08-14 | Large current knife type high-pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201514882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810186A (en) * | 2014-11-18 | 2015-07-29 | 平高集团有限公司 | Moving contact unit and three-position switch with moving contact unit |
| CN108172449A (en) * | 2017-12-26 | 2018-06-15 | 北京双杰电气股份有限公司 | A kind of rotary separation switch |
-
2009
- 2009-08-14 CN CN2009200342304U patent/CN201514882U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810186A (en) * | 2014-11-18 | 2015-07-29 | 平高集团有限公司 | Moving contact unit and three-position switch with moving contact unit |
| CN104810186B (en) * | 2014-11-18 | 2017-09-29 | 平高集团有限公司 | A kind of moving-contact unit and the three-station using the moving-contact unit |
| CN108172449A (en) * | 2017-12-26 | 2018-06-15 | 北京双杰电气股份有限公司 | A kind of rotary separation switch |
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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: 20100623 |