CN101719432A - Vacuum switching tube for protective circuit breaker of generator outlet - Google Patents
Vacuum switching tube for protective circuit breaker of generator outlet Download PDFInfo
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- CN101719432A CN101719432A CN200910220074A CN200910220074A CN101719432A CN 101719432 A CN101719432 A CN 101719432A CN 200910220074 A CN200910220074 A CN 200910220074A CN 200910220074 A CN200910220074 A CN 200910220074A CN 101719432 A CN101719432 A CN 101719432A
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- circuit breaker
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- switching tube
- vacuum switching
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Abstract
The invention relates to a vacuum switching tube for a protective circuit breaker of a generator outlet, solving the problem that the conventional vacuum switching tube has low surface utilization rate and small capacity and can not satisfy great current breaking requirement. The vacuum switching tube for a protective circuit breaker of a generator outlet comprises a guiding sleeve, ceramic insulated shells, a composite shielded sleeve, a movable end pipe core, a static end pipe core and a protective cap, wherein the ceramic insulated shell is respectively connected with the movable end pipe core and the static end pipe core by kovars; the composite shielded sleeve is connected with the ceramic insulated shells at both ends; and the contact combinations of the movable end pipe core and the static end pipe core are corresponding to each other. The vacuum switching tube for a protective circuit breaker of a generator outlet is characterized in that either contact combination is in arc-distributed electrode structure and respectively comprises a cup seat, a supporting disk, a magnetism-concentrating column, a contact body and an oxygen-free copper tray; the composite shielded sleeve comprises an arc absorption inner layer and a magnetic shielded outer layer; and the surface of a static conductive rod is provided with radiation grooves. The invention has the advantages of reasonable structure, strong current breaking and closing capabilities, small loop resistance, uniform electrode surface combustion, high surface utilization rate and strong radiation capability.
Description
Technical field
The present invention relates to a kind of vacuum switch tube, especially cut-off jumbo vacuum switching tube for protective circuit breaker of generator outlet.
Background technology
Vacuum switch tube is the core devices of vacuum switch (circuit breaker, contactor, on-load switch etc.), being widely used in national economy every profession and trades such as electric power, metallurgy, machinery, mine, traffic, national defence, military project, scientific research, industry, agricultural, is the indispensable important devices of national development; It is the renewal product that replaces the traditional oils switch, has that volume is little, light weight, cut-offs that capacity is big, dependability is high and remarkable advantage such as easy to maintenance; Become the direction of domestic and international switch industry development and application.Use the generator outlet protection not only can protect generator and transformer with circuit breaker (GCB); the minimizing equipment mean time between maintenance; improve the condition same period; the security reliability of entire power plant is improved greatly; make things convenient for power plant's management, operation and safeguard that the while can also bring tangible economic benefit, the interior maintenance cost of entire power plant life cycle is reduced; accelerated the investment repayment of power plant, so generating set outlet installing GCB is the scheme that many experts recommend to the utmost.Various water power, thermoelectricity project because present country's energy power supply shortage especially on the whole, all parts of the country are starting in a large number, and the vacuum circuit-breaker that such generating set is just needing to cut-off big short circuit current is protected.Existing vacuum switch tube is to be made of fairlead, ceramic insulation shell, stainless steel or oxygen-free copper shielding cylinder, moved end tube core and quiet end tube core and protective cap, the problem of its existence is: 1, contact is a cup-shaped longitudinal magnetic field structure, the surface utilance is low, can not satisfy the high-current on-off requirement; 2, shielding cylinder adopts stainless steel or oxygenless copper material, when when cut-offfing very big short circuit current, can not eliminate magnetic field that three-phase current produces to effect of arc, is unfavorable for cut-offfing; Though 3, the static conductive rod diameter of quiet end tube core is very big, the heating phenomenon is still more serious when high-current on-off.Therefore, it is little with the vacuum switch tube capacity to be used for the generator outlet protection at present, is difficult to satisfy the supporting demand of production domesticization.
Summary of the invention
In order to overcome above-mentioned defective, the purpose of this invention is to provide a kind of jumbo vacuum switching tube for protective circuit breaker of generator outlet, meeting the high-current on-off requirement, thereby satisfy the supporting demand of production domesticization.
To achieve these goals, the present invention adopts following technical scheme:
A kind of vacuum switching tube for protective circuit breaker of generator outlet; comprise fairlead; the ceramic insulation shell; the composite shielding tube; the moved end tube core; quiet end tube core and protective cap; the moving conductive rod of moved end tube core is passed by the fairlead endoporus; the ceramic insulation shell is connected with quiet end tube core with the moved end tube core by cutting down respectively; the composite shielding tube is connected with the ceramic insulation shell at two ends; the moved end tube core is corresponding with the contact combinations of quiet end tube core; its special character is: described contact combinations is an electric arc even distribution type electrode structure; and have the cup of skewed slot respectively by the surface; supporting disk with the cup soldering; be placed on the supporting disk and uniform a plurality of poly-magnetic post; soldering contact body and oxygen-free copper pallet together constitutes; the composite shielding tube absorbs internal layer by electric arc and the magnetic screen skin constitutes, and the static conductive rod surface is provided with radiating groove.
Above-mentioned vacuum switching tube for protective circuit breaker of generator outlet is that vacuum brazing is upright between described composite shielding tube and the ceramic insulation shell to be sealed, to guarantee the intensity and the air-tightness of homogeneous tube welding.
Advantage of the present invention is:
1, contact combinations is an electric arc even distribution type electrode structure, to replace old-fashioned cup-shaped longitudinal magnetic field structure, can improve drop-out current ability and making current ability, satisfies the demand of growing high-current on-off; Contact is divided into disome and forms,, reduce loop resistance to reduce spring by contact body and the soldering of oxygen-free copper pallet.
2, adopt the composite shielding tube, better to metal sputtering thing adsorption effect when electrode draws back, and the magnetic field that can eliminate the three-phase current generation helps cut-offfing to effect of arc.
3, the static conductive rod diameter of the vacuum switch tube of high-current on-off is very big, and the heating phenomenon is more serious, for solving the problem of temperature rise that produces therefrom, the static conductive rod surface is had radiating groove, increases area of dissipation, to improve heat-sinking capability, solves problem of temperature rise.
Therefore; the present invention is rational in infrastructure; drop-out current ability and making current ability are strong; loop resistance is little; even and the surperficial utilance height of electrode surface burning, heat-sinking capability is strong, and through-current capability and resistance fusion welding can be good; coaxial and vacuum levels is high, guarantee the security of operation of generator outlet protection with circuit breaker.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a contact combinations structural representation among the present invention;
Fig. 3 is the vertical view of Fig. 2.
Among the figure: fairlead 1, can cut down 2, ceramic insulation shell 3; moved end tube core 4, contact combinations 401, composite shielding tube 5; electric arc absorbs internal layer 501, magnetic screen skin 502, quiet end tube core 6; contact combinations 601, radiating groove 602, protective cap 7; oxygen-free copper pallet 8, contact body 9, poly-magnetic post 10; supporting disk 11, cup 12.
Embodiment
As shown in the figure; this vacuum switching tube for protective circuit breaker of generator outlet comprises fairlead 1, ceramic insulation shell 3, composite shielding tube 5, moved end tube core 4, quiet end tube core 6 and protective cap 7; the moving conductive rod of moved end tube core 4 is passed by fairlead 1 endoporus; ceramic insulation shell 3 is connected with quiet end tube core 6 with moved end tube core 4 respectively by cutting down 2; the composite shielding tube 5 of shielding contact arc zone is connected with the ceramic insulation shell 3 at two ends; protective cap 7 is connected with the static conductive rod of quiet end tube core 6, and moved end tube core 4 is corresponding with the contact combinations 401,601 of quiet end tube core 6.Described contact combinations 401 and 601 is an electric arc even distribution type electrode structure, and respectively by the surface have the cup 12 of skewed slot, with the supporting disk 11 of cup 12 solderings, be placed on the supporting disk 11 and along the circumferential direction uniform a plurality of poly-magnetic post 10, constitute soldering between oxygen-free copper pallet 8 and the supporting disk 11 by silver-bearing copper nickel scolder soldering contact body 9 and oxygen-free copper pallet 8 together.Composite shielding tube 5 absorbs internal layer 501 by electric arc and magnetic screen skin 502 constitutes, electric arc absorbs internal layer 501 and adopts oxygen-free copper or stainless steel, ferromagnetic material is adopted in magnetic screen outer 502, electric arc absorbs welding between internal layer 501 and the magnetic screen skin 502, composite shielding tube 5 adopts the upright envelope form of vacuum brazing with ceramic insulation shell 3, to guarantee the intensity and the air-tightness of homogeneous tube welding.Static conductive rod surface at quiet end tube core 6 is provided with radiating groove 602, to increase area of dissipation, improves heat-sinking capability.Homogeneous tube adopts argon arc welding centering spot welding mode, guarantees the homogeneous tube axiality.Carry out exhaust and big electric current ageing at exhaust station, improve homogeneous tube vacuum degree and connecting-disconnecting function.
Claims (2)
1. vacuum switching tube for protective circuit breaker of generator outlet; comprise fairlead; the ceramic insulation shell; the composite shielding tube; the moved end tube core; quiet end tube core and protective cap; the moving conductive rod of moved end tube core is passed by the fairlead endoporus; the ceramic insulation shell is connected with quiet end tube core with the moved end tube core by cutting down respectively; the composite shielding tube is connected with the ceramic insulation shell at two ends; the moved end tube core is corresponding with the contact combinations of quiet end tube core; it is characterized in that: described contact combinations is an electric arc even distribution type electrode structure; and have the cup of skewed slot respectively by the surface; supporting disk with the cup soldering; be placed on the supporting disk and uniform a plurality of poly-magnetic post; soldering contact body and oxygen-free copper pallet together constitutes; the composite shielding tube absorbs internal layer by electric arc and the magnetic screen skin constitutes, and the static conductive rod surface is provided with radiating groove.
2. vacuum switching tube for protective circuit breaker of generator outlet according to claim 1 is characterized in that: be the upright envelope of vacuum brazing between described shielding cylinder and the ceramic insulation shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910220074A CN101719432A (en) | 2009-11-20 | 2009-11-20 | Vacuum switching tube for protective circuit breaker of generator outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910220074A CN101719432A (en) | 2009-11-20 | 2009-11-20 | Vacuum switching tube for protective circuit breaker of generator outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101719432A true CN101719432A (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910220074A Pending CN101719432A (en) | 2009-11-20 | 2009-11-20 | Vacuum switching tube for protective circuit breaker of generator outlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101719432A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409251A (en) * | 2010-09-21 | 2012-04-11 | 鞍钢股份有限公司 | 610MPa grade super-thick steel plate with low welding crack sensitivity and manufacturing method thereof |
| CN107645861A (en) * | 2016-07-20 | 2018-01-30 | 罗伯特·博世有限公司 | Safety device |
-
2009
- 2009-11-20 CN CN200910220074A patent/CN101719432A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409251A (en) * | 2010-09-21 | 2012-04-11 | 鞍钢股份有限公司 | 610MPa grade super-thick steel plate with low welding crack sensitivity and manufacturing method thereof |
| CN107645861A (en) * | 2016-07-20 | 2018-01-30 | 罗伯特·博世有限公司 | Safety device |
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Open date: 20100602 |