CN103811224B - Vacuum arc-extinguishing chamber and electrode thereof as well as contact structure - Google Patents
Vacuum arc-extinguishing chamber and electrode thereof as well as contact structure Download PDFInfo
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- CN103811224B CN103811224B CN201410031507.3A CN201410031507A CN103811224B CN 103811224 B CN103811224 B CN 103811224B CN 201410031507 A CN201410031507 A CN 201410031507A CN 103811224 B CN103811224 B CN 103811224B
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Abstract
The invention relates to a vacuum arc-extinguishing chamber and an electrode thereof as well as the contact structure of the vacuum arc-extinguishing chamber. The contact structure comprises an composite contact cup consisting of an inner transverse magnetic contact cup and an outer longitudinal magnetic cup, wherein a contact blade is fixedly arranged on the rim of the composite contact cup, the rim edge of the inner transverse magnetic contact cup and the rim edge of the outer longitudinal magnetic cup are fixedly connected with the contact blade in a welded way, chutes with same oblique directions are arranged on the cup walls of the two contact cups peripherally, and a support piece for supporting the contact blade is arranged in the inner transverse magnetic contact cup. Under the premise that the diameter of the contact and the volume of the arc-extinguishing chamber are not increased, the conductive loop resistance and temperature rise of the vacuum arc-extinguishing chamber can be reduced, the rated current carrying capability of the vacuum switch contact can be improved, electric arc can be more effectively controlled, and the capacity of switching on or off the current and use life of the vacuum arc-extinguishing chamber can be improved.
Description
Technical field
The present invention relates to vacuum interrupter technical field.
Background technology
Vacuum interrupter is the core component of vacuum switch, and it mainly includes insulation crust, galvanic circle and shielding harness
Etc. part, wherein, galvanic circle is made up of dynamic and static electrode, and dynamic and static electrode by corresponding conducting rod and is fixedly installed on conducting rod
On contact constitute.Because contact is the position producing electric arc and extinguishing electric arc, so the structure of contact cut-offs electricity to arc-chutes
The ability of stream has a great impact, and structure of contact terminal common at present mainly has three kinds：Spiral flute type structure, band skewed slot cup-like structure
Indulge magnetic structure with cup-shaped.
Cup-shaped is indulged magnetic structure contact and is common in high current vacuum switch, and it is mainly set and be fixed on contact cup by contact cup, lid
Contact blade on rim of a cup and the support member composition for supports contacts piece being arranged in contact cup, uniform on the perisporium of contact cup
There is skewed slot, contact blade is opened along its radial direction and is formed with anti-vortex groove formation multi-petal shape shape, and contact blade and contact cup are welded by solder
It is connected together.In application, dynamic and static contact adopts same structure, and conducting rod, contact cup and contact blade are gone here and there in order in circuit
Connection, after circuit ON, electric current flows through conducting rod, contact cup and contact blade, when electric current flows through two contact cups, produces in two contact gap
The raw magnetic field parallel to conducting rod axial direction, that is, indulge magnetic field.Vertical magnetic field play suppression electric arc in contact surface random motion and
Prevent the effect that electric arc gathers, be conducive to extending the life-span of contact blade, but this structure yet suffers from current path length, conduction
The defect such as loop resistance is big, contact resistance is big and temperature rise ratio is larger.
Content of the invention
It is an object of the invention to provide the vacuum arc-extinguishing chamber contact structure that a kind of galvanic circle resistance is little, temperature rise is low.Simultaneously
The present invention also provides vacuum interrupter electrode and vacuum interrupter using this structure of contact terminal.
For achieving the above object, a kind of vacuum arc-extinguishing chamber contact structure of the present invention adopts the following technical scheme that：A kind of true
Empty arc-chutes structure of contact terminal, compound tactile including be made up of magnetic contact cup horizontal in inside and outside being set-located and outer vertical magnetic contact cup
Head cup, the rim of a cup of composite contact cup is fixed with contact blade, the cup of the rim of a cup edge of interior horizontal magnetic contact cup and outer vertical magnetic contact cup
Opening's edge is all connected with contact blade welding, and the wall of cup of two contact cups is circumferentially laid with oblique identical skewed slot, interior horizontal magnetic contact
It is equiped with the support member of supports contacts piece in cup.
The rim of a cup end face of described two contact cups is concordant, and contact blade is saucer-like configuration, the correspondence two contact rim of a cup edge of contact blade
Welding portion form dish edge, dish bottom is partially toward in cup depression.
Described interior horizontal magnetic contact cup is 3-16 circle structure, and outer vertical magnetic contact cup is 4-8 circle structure.
Described support member is sheath structure.
A kind of vacuum interrupter electrode of the present invention adopts the following technical scheme that：A kind of vacuum interrupter electrode, including leading
Electric pole and the contact being fixedly installed on conducting rod, described contact is included by magnetic contact cup horizontal in inside and outside being set-located with outward
The composite contact cup of vertical magnetic contact cup composition, the rim of a cup of composite contact cup is fixed with contact blade, the cup of interior horizontal magnetic contact cup
The rim of a cup of opening's edge and outer vertical magnetic contact cup, along being all connected with contact blade welding, the wall of cup of two contact cups is circumferentially laid with oblique
Identical skewed slot, interior horizontal magnetic contact cup is installed on conducting rod, is equiped with the support member of supports contacts piece in interior horizontal magnetic contact cup.
The rim of a cup end face of described two contact cups is concordant, and contact blade is saucer-like configuration, the correspondence two contact rim of a cup edge of contact blade
Welding portion form dish edge, dish bottom is partially toward in cup depression.
Described interior horizontal magnetic contact cup is structure as a whole with conducting rod, and cup bottom one end of described outer vertical magnetic contact cup is welded and fixed
On conducting rod.
A kind of vacuum interrupter of the present invention adopts the following technical scheme that：A kind of vacuum interrupter, including insulation crust and
Dynamic and static electrode, moving electrode includes moving conductive rod and the contact unit being fixedly positioned thereon, and stationary electrode includes static conductive rod and consolidates
Surely the contact unit being arranged on, described contact unit includes being touched by magnetic contact cup horizontal in inside and outside being set-located and outer vertical magnetic
The composite contact cup of head cup composition, the rim of a cup of composite contact cup is fixed with contact blade, the rim of a cup edge of interior horizontal magnetic contact cup is with outward
The rim of a cup of vertical magnetic contact cup, along being all connected with contact blade welding, the wall of cup of inside and outside two contact cups is circumferentially laid with oblique identical
Skewed slot, interior horizontal magnetic contact cup is installed on corresponding conducting rod, is equiped with the support of supports contacts piece in interior horizontal magnetic contact cup
Part.
In described contact unit, the rim of a cup end face of inside and outside two contact cups is concordant, and contact blade is saucer-like configuration, contact blade right
The welding portion answering inside and outside two contact rim of a cup edges forms dish edge, and dish bottom is partially toward depression in cup.
Described interior horizontal magnetic contact cup is structure as a whole with corresponding conducting rod, cup bottom one end weldering of described outer vertical magnetic contact cup
Connect and be fixed on corresponding conducting rod.
The present invention, using the outer composite contact cup structure of the composition that is nested inside and outside interior horizontal magnetic contact cup and outer vertical magnetic contact cup, makes
Obtain the electric current when dynamic and static contact is connected to shunt by inside and outside two contact cups simultaneously；When dynamic and static contact separates, electric current
Flow through inside and outside two contact cups thus dynamic and static contact gap produce in transverse magnetic and outer vertical magnetic field.Indulge magnetic contact with existing cup-shaped
The vacuum interrupter of structure is compared, and increased the cross-sectional area of current path, and galvanic circle resistance ratio is relatively low, the answering of transverse and longitudinal magnetic field
Conjunction makes electric arc ratio relatively decentralized, reduces electric arc and converges the probability of ablation contact surface, is not increasing contact diameter and going out
On the premise of arc chamber volume, the present invention can reduce vacuum interrupter galvanic circle resistance and temperature rise, improves contacts of vacuum switch
Rated current lead to loading capability, can more effectively control electric arc simultaneously, improve the ability of vacuum interrupter drop-out current and make
Use the life-span.
Brief description
Fig. 1 is the structural representation of the galvanic circle part in a kind of embodiment of vacuum interrupter of the present invention；
Fig. 2 is the structural representation supporting body in Fig. 1；
Fig. 3 is the structural representation of the vertical magnetic contact cup in Fig. 1 China and foreign countries；
Fig. 4 is the structural representation of interior horizontal magnetic contact cup in Fig. 1.
Specific embodiment
Vacuum interrupter of the present invention mainly includes insulation crust, galvanic circle and shielding harness, and the assembling between them is closed
Be same as the prior art, wherein, galvanic circle includes dynamic and static electrode, the structure of two electrodes as Figure 1-4, moving electrode by
Moving conductive rod 1 and the contact unit composition being fixedly installed on moving conductive rod, stationary electrode by static conductive rod 2 and is fixedly installed on quiet
Contact unit composition on conducting rod.
The contact body structure of above-mentioned two contact units is identical, only the contact unit on moving conductive rod 1 is carried out in detail below
Thin introduce, this contact unit include by inside and outside axial sleeve together in horizontal magnetic contact cup 3 and outer vertical magnetic contact cup 5 form
Composite contact cup, the rim of a cup end face of composite contact cup is collectively formed by the rim of a cup end face of inside and outside two contact cups；In composite contact cup
Rim of a cup end face on be fixed with a contact blade 8, the rim of a cup of the rim of a cup edge of interior horizontal magnetic contact cup 3 and outer vertical magnetic contact cup 5 is along all
Be connected with contact blade 8 welding, the wall of cup of inside and outside two contact cups be evenly distributed skewed slot, the skewed slot on inside and outside wall of cup oblique
To identical, corresponding wall of cup is divided into some circles by each skewed slot, and the number of the number of turn is selected according to actual needs, wherein interior horizontal stroke
The number of turn of magnetic contact cup 3 can be any one in 3-16 circle, and the number of turn of outer vertical magnetic contact cup 5 can be appointing in 4-8 circle
Meaning is a kind of；Also it is equiped with the support member of supports contacts piece 8 in interior horizontal magnetic contact cup.In the present embodiment, support member adopts body
Structure, support the external diameter of body 7 to be adapted with the internal diameter of interior horizontal magnetic contact cup 3 it is ensured that support set physical ability be successfully assembled to interior
In horizontal magnetic contact cup, support in the present embodiment between body and interior horizontal magnetic contact cup as gap cooperation such that it is able to play more preferably
Ground supporting role, is axially supported to contact blade, and radially internally the finger ring of horizontal magnetic contact cup plays positioning supporting role, so
Can preferably prevent contact cup from deforming.The interior cup bottom of interior horizontal magnetic contact cup 3 is flat-bottom structure, supports body 7 to rest on this interior
On cup bottom.In the course of the work, when two contact units contacts, galvanic circle are connected, electric current enters inside and outside two by conducting rod
Contact cup, inside and outside two contact cups flow through electric current simultaneously, increase through-current capability；When two contact units separate, two contact units
Between existing transverse magnetic have vertical magnetic field such that it is able to effective control electric arc again.
In the present embodiment, the rim of a cup end face of inside and outside two contact cups is concordantly arranged, and supports the end face of body 7 to be less than corresponding contact
Cup rim of a cup end face, contact blade 8 is the convex saucer-like configuration in middle concave, edge, contact blade with inside and outside two contact rims of a cup along relative
Welding portion forms dish edge, i.e. raised annular edge of part, dish bottom divide i.e. intermediate recessed portions be recessed towards in cup against
On the end face supporting body.So when the contact unit of dynamic and static electrode contacts, two contact blades only have dish and connect along part
Touch, this contact blade is integrated with ring-type and the function of fluting laminated structure contact blade, both can prevent electric arc from burning contact cup and sit
Interior, electric arc can be allowed along circular motion again.The centre bore opening up on contact blade has two effects, and one is to remove disk center
The fault in material leading to during melting, another is to remove the wedge angle that the machine added-time stays.
In the present embodiment, interior horizontal magnetic contact cup is installed on corresponding conducting rod, wherein, is fixed on moving conductive rod 1
Interior horizontal magnetic contact cup 3 in contact unit is structure as a whole with moving conductive rod 1 that is to say, that directly adding one end of moving conductive rod
The structure of horizontal magnetic contact cup in work one-tenth, the external diameter of this interior horizontal magnetic moving contact cup is more than the external diameter of moving conductive rod 1, makes interior horizontal magnetic contact
Cup has outer cup bottom face, and cup bottom one end of the outer vertical magnetic contact cup 5 in this contact unit is sheathed and is weldingly fixed on moving conductive
On bar 1；The cup bottom of the interior horizontal magnetic contact cup 4 being fixed in static conductive rod 2 upper contact head unit has a glass neck, interior horizontal magnetic contact cup 4
It is welded and fixed together with static conductive rod 2 by its glass of neck, cup bottom one end welding of the outer vertical magnetic contact cup 6 in this contact unit
It is fixed on described cup neck.
Moving electrode in the embodiment of vacuum interrupter electrode of the present invention and vacuum interrupter shown in above-mentioned Fig. 1-4 or
Stationary electrode structure is identical, no longer repeats herein.
Contact list in the embodiment of vacuum arc-extinguishing chamber contact structure of the present invention and vacuum interrupter shown in above-mentioned Fig. 1-4
The structure of unit is identical, no longer repeats herein.
In the various embodiments described above, contact blade 8 can also adopt ring slice structure, now support the end face of body 7 and answer
Close contact cup rim of a cup end face concordant, the inside edge of ring contact piece supports cooperation, other portions of ring contact piece with supporting body
Position correspondence is welded on interior horizontal magnetic contact cup rim of a cup edge and outer vertical magnetic contact cup rim of a cup along upper.Certainly, contact blade can also be using band
The wafer body structure of fluting.
In the various embodiments described above, interior horizontal magnetic contact cup and outer vertical magnetic contact cup and contact blade, the material of support member are with now
Have identical in technology.The sheath structure of support member can also be substituted using support plate of the prior art.In addition, interior horizontal magnetic contact
Cup can adopt with the type of attachment of conducting rod and for both be directly prepared into integrative-structure, it would however also be possible to employ after contact cup is separately formed
Again with conducting rod welded structure.
Claims (10)
1. a kind of vacuum arc-extinguishing chamber contact structure it is characterised in that：Including by magnetic contact cup horizontal in inside and outside being set-located and
Indulge outward the composite contact cup of magnetic contact cup composition, the rim of a cup of composite contact cup is fixed with contact blade, interior horizontal magnetic contact cup
The rim of a cup of rim of a cup edge and outer vertical magnetic contact cup, along being all connected with contact blade welding, the wall of cup of two contact cups is circumferentially laid with tiltedly
To identical skewed slot, it is equiped with the support member of supports contacts piece in interior horizontal magnetic contact cup.
2. vacuum arc-extinguishing chamber contact structure according to claim 1 it is characterised in that：The rim of a cup end face of described two contact cups
Concordantly, contact blade is saucer-like configuration, and the welding portion on the correspondence two contact rim of a cup edge of contact blade forms dish edge, and dish bottom is partially toward
It is recessed in cup.
3. vacuum arc-extinguishing chamber contact structure according to claim 1 and 2 it is characterised in that：Described interior horizontal magnetic contact cup is
3-16 circle structure, outer vertical magnetic contact cup is 4-8 circle structure.
4. vacuum arc-extinguishing chamber contact structure according to claim 1 and 2 it is characterised in that：Described support member is tied for body
Structure.
5. a kind of vacuum interrupter electrode, including conducting rod and the contact that is fixedly installed on conducting rod it is characterised in that：Described
Contact includes the composite contact cup being made up of magnetic contact cup horizontal in inside and outside being set-located and outer vertical magnetic contact cup, composite contact
Contact blade is fixed with the rim of a cup of cup, the rim of a cup of the rim of a cup edge of interior horizontal magnetic contact cup and outer vertical magnetic contact cup is along equal and contact blade
Welding is connected, and the wall of cup of two contact cups is circumferentially laid with oblique identical skewed slot, interior horizontal magnetic contact cup is installed in conducting rod
On, it is equiped with the support member of supports contacts piece in interior horizontal magnetic contact cup.
6. vacuum interrupter electrode according to claim 5 it is characterised in that：The rim of a cup end face of described two contact cups is put down
Together, contact blade is saucer-like configuration, and the welding portion on the correspondence two contact rim of a cup edge of contact blade forms dish edge, and dish bottom is partially toward cup
Middle depression.
7. the vacuum interrupter electrode according to claim 5 or 6 it is characterised in that：Described interior horizontal magnetic contact cup and conduction
Bar is structure as a whole, and cup bottom one end of described outer vertical magnetic contact cup is weldingly fixed on conducting rod.
8. a kind of vacuum interrupter, including insulation crust and dynamic and static electrode, moving electrode includes moving conductive rod and is fixedly installed on it
On contact unit, stationary electrode include static conductive rod and contact unit thereon is fixedly installed it is characterised in that：Described contact list
Unit includes the composite contact cup being made up of magnetic contact cup horizontal in inside and outside being set-located and outer vertical magnetic contact cup, composite contact cup
Rim of a cup on be fixed with contact blade, the rim of a cup of the rim of a cup edge of interior horizontal magnetic contact cup and outer vertical magnetic contact cup along all with contact blade welding
It is connected, the wall of cup of inside and outside two contact cups is circumferentially laid with oblique identical skewed slot, interior horizontal magnetic contact cup is installed in corresponding
On conducting rod, it is equiped with the support member of supports contacts piece in interior horizontal magnetic contact cup.
9. vacuum interrupter according to claim 8 it is characterised in that：In described contact unit, inside and outside two contact cups
Rim of a cup end face is concordant, and contact blade is saucer-like configuration, and inside and outside the correspondence of contact blade, the welding portion on two contact rim of a cup edges forms dish edge,
Dish bottom is partially toward depression in cup.
10. vacuum interrupter according to claim 8 or claim 9 it is characterised in that：Described interior horizontal magnetic contact cup is led with corresponding
Electric pole is structure as a whole, and cup bottom one end of described outer vertical magnetic contact cup is weldingly fixed on corresponding conducting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410031507.3A CN103811224B (en) | 2014-01-23 | 2014-01-23 | Vacuum arc-extinguishing chamber and electrode thereof as well as contact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410031507.3A CN103811224B (en) | 2014-01-23 | 2014-01-23 | Vacuum arc-extinguishing chamber and electrode thereof as well as contact structure |
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| CN103811224A CN103811224A (en) | 2014-05-21 |
| CN103811224B true CN103811224B (en) | 2017-02-15 |
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| CN201410031507.3A Active CN103811224B (en) | 2014-01-23 | 2014-01-23 | Vacuum arc-extinguishing chamber and electrode thereof as well as contact structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104021973B (en) * | 2014-06-24 | 2016-05-04 | 沈阳华德海泰电器有限公司 | A kind of three-station of quick-speed turning on-off bus transfer current |
| CN104269315B (en) * | 2014-09-05 | 2016-09-14 | 中国西电电气股份有限公司 | High power switch with current limiter |
| CN108389753B (en) * | 2018-02-07 | 2020-03-31 | 西安交通大学 | Novel cup-shaped vacuum arc-extinguishing chamber contact |
| CN113471012B (en) * | 2021-07-20 | 2022-04-15 | 四川大学 | Vacuum arc extinguish chamber |
Citations (3)
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|---|---|---|---|---|
| CN201590373U (en) * | 2010-01-13 | 2010-09-22 | 锦州华光玻璃开关管有限公司 | Low-voltage big-breaking capacity ceramic vacuum switch tube |
| CN101923983A (en) * | 2009-06-10 | 2010-12-22 | 阿海珐输配电股份公司 | Winding and electric contact and their manufacture method, vacuum circuit-breaker and uses thereof |
| CN103189950A (en) * | 2010-09-24 | 2013-07-03 | Abb技术股份公司 | Electrical contact arrangement for vacuum interrupter arrangement |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130230A1 (en) * | 1991-09-09 | 1993-03-11 | Slamecka Ernst | Vacuum switch contact system for high voltage network - has built in electromagnetic field generator coated around contact region with arc aperture in housing |
| FR2946790B1 (en) * | 2009-06-10 | 2011-07-01 | Areva T & D Sa | CONTACT FOR MEDIUM VOLTAGE VACUUM BULB WITH IMPROVED ARC BREAKER, VACUUM BULB AND CIRCUIT BREAKER, SUCH AS AN ALTERNATOR DISCONNECT CIRCUIT BREAKER. |
| CN203812799U (en) * | 2014-01-23 | 2014-09-03 | 天津平高智能电气有限公司 | Vacuum arc-extinguishing chamber, electrode and contact structure thereof |
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2014
- 2014-01-23 CN CN201410031507.3A patent/CN103811224B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923983A (en) * | 2009-06-10 | 2010-12-22 | 阿海珐输配电股份公司 | Winding and electric contact and their manufacture method, vacuum circuit-breaker and uses thereof |
| CN201590373U (en) * | 2010-01-13 | 2010-09-22 | 锦州华光玻璃开关管有限公司 | Low-voltage big-breaking capacity ceramic vacuum switch tube |
| CN103189950A (en) * | 2010-09-24 | 2013-07-03 | Abb技术股份公司 | Electrical contact arrangement for vacuum interrupter arrangement |
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| CN103811224A (en) | 2014-05-21 |
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Inventor after: Wang Xiaoqin Inventor after: Li Min Inventor after: Xu Xiaona Inventor after: Shu Xiaoping Inventor after: Li Wenyi Inventor after: Sun Shuping Inventor after: Yang Lansuo Inventor before: Wang Xiaoqin Inventor before: Li Min Inventor before: Shu Xiaoping Inventor before: Li Wenyi Inventor before: Sun Shuping Inventor before: Yang Lansuo |
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