CN202159627U - High-pressure vacuum arc-extinguishing chamber - Google Patents
High-pressure vacuum arc-extinguishing chamber Download PDFInfo
- Publication number
- CN202159627U CN202159627U CN201120297257XU CN201120297257U CN202159627U CN 202159627 U CN202159627 U CN 202159627U CN 201120297257X U CN201120297257X U CN 201120297257XU CN 201120297257 U CN201120297257 U CN 201120297257U CN 202159627 U CN202159627 U CN 202159627U
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- moving
- conductive rod
- cover plate
- insulation crust
- contact
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Abstract
The utility model discloses a high-pressure vacuum arc-extinguishing chamber which comprises an insulating housing a, an insulating housing b and an insulating housing c, wherein a fixed cover plate is arranged on the outer end surface of the insulating housing b, and a moving pressure-equalizing cover is arranged at the joint of the insulating housing c and a moving cover plate; a shielding cylinder is arranged in the middle position in a housing constituted by the insulating housing b and the insulating housing c; a fixed conductive rod and a moving conductive rod are further arranged at two ends of the insulating housing a, a fixed contact is arranged at the end of the fixed conductive rod, a moving contact is arranged at the end of the moving conductive rod, and the moving contact is further connected with the moving cover plate through a corrugated pipe arranged on the surface of the moving conductive rod; a fixed shielding cover is arranged on the fixed conductive rod, and a moving shielding cover is arranged on the moving conductive rod; and a guide sleeve is arranged at an opening of the moving cover plate. The high-pressure vacuum arc-extinguishing chamber can achieve the requirement of 0.2 million-time mechanical life; furthermore, the structural design is reasonable, and the long electric life requirement of the arc-extinguishing chamber is ensured.
Description
Technical field
The utility model belongs to the High-Voltage Insulation technical field of electric appliances, relates to a kind of high voltage vacuum interrupter.
Background technology
Vacuum interrupter; Having another name called vacuum switch tube, is the core component of mesohigh power switch, and it mainly acts on and is; Make behind the mesohigh circuitry cuts power supply blow-out rapidly and suppress electric current through the good insulating properties of vacuum in managing; Avoid accident to take place, be mainly used in the power transmission and distribution control system of electric power, also be applied to distribution systems such as metallurgy, mine, oil, chemical industry, railway, broadcasting, communication, industrial high-frequency heating with unexpected.Have energy-conservation, material-saving, fire prevention, explosion-proof, volume is little, the life-span is long, maintenance cost is low, characteristics such as reliable and pollution-free.
Existing 27.5kV～40.5kV high voltage vacuum interrupter is because the restriction of structure; Are generally its electric life and mechanical endurance 1～20,000 time, that can't satisfy occasions such as high-speed railway and steel mill requires 100,000 times to 200,000 times the instructions for use of vacuum interrupter long-life.
Summary of the invention
The purpose of the utility model provides a kind of high voltage vacuum interrupter, has improved the useful life of high voltage vacuum interrupter.
The technical scheme that the utility model adopts is, a kind of high voltage vacuum interrupter, and insulation crust a is provided with the shell that one deck is made up of two parts up and down in the insulation crust a, and wherein, top is divided into insulation crust b, and the bottom is divided into insulation crust c; The outer face of insulation crust b is provided with the quiet cover plate that has opening, and the outer face of insulation crust c is provided with the moving cover plate that has opening; The junction of insulation crust b and quiet cover plate is provided with quiet grading shield, and the junction of insulation crust c and moving cover plate is provided with moving grading shield; The centre position is provided with shielding cylinder in the shell that insulation crust b and insulation crust c constitute; The two ends of insulation crust a also are provided with static conductive rod and moving conductive rod, and static conductive rod passes quiet cover plate, and moving conductive rod passes moving cover plate; The termination of static conductive rod is provided with fixed contact, and the termination of moving conductive rod is provided with moving contact, also is connected through the bellows that is arranged on the moving conductive rod surface between moving contact and the moving cover plate; Static conductive rod is provided with quiet radome, and moving conductive rod is provided with moving radome; The opening part of moving cover plate is provided with fairlead.
The characteristic of the utility model also is,
Distance between moving contact and the fixed contact is 15mm-24mm.
The bellows wall thickness is 0.17mm-0.20mm; The thickness of convolution is 3mm-4mm; The pitch of waves is 5mm-6mm, and external diameter is 60mm-70mm, and internal diameter is 40mm-50mm, and wave number is 18-22, and length is 100mm-115mm.
The high voltage vacuum interrupter of the utility model; The magnetic field intensity of cup-shaped 1/2 turn longitudinal field contact of moving contact and fixed contact is equal to the vertical electromagnetic field contact of coil type 1/2 circle; But contact intensity is far longer than the vertical electromagnetic field contact of coil type 1/2 circle, has guaranteed long-life requirement; Contact has bigger arcing area, has guaranteed long electric life requirement.Bellows is selected stainless steel 0
22Cr
17Ni
12Mo
2(316L), through rationally choosing bellows material and structural parameters, make vacuum interrupter reach 200,000 requirements mechanical endurance; And moving contact, static contact structure are reasonable in design, have guaranteed the long electric life requirement of arc control device.Bellows adopts big depth of convolution structure, and waveform guarantees serpentine, through the wall thickness and the rigidity of strict process assurance bellows, thus the mechanical endurance that strengthens bellows and vacuum interrupter.
Description of drawings
Fig. 1 is the structural representation of the utility model high voltage vacuum interrupter.
Fig. 2 is the structural representation of bellows in the utility model.
Among the figure, 1. insulation crust a, 2. insulation crust b, 3. insulation crust c, 4. fairlead, 5. static conductive rod; 6. moving conductive rod, 7. fixed contact, 8. moving contact, 9. quiet cover plate, 10. moving cover plate, 11. quiet grading shields; 12. moving grading shield, 13. quiet radomes, 14. moving radomes, 15. shielding cylinders, 16. bellowss.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
The structure of the utility model high voltage vacuum interrupter, as shown in Figure 1, comprise insulation crust a1,
Be provided with the shell that one deck is made up of two parts up and down in the insulation crust a1, wherein, top is divided into insulation crust b2, and the bottom is divided into insulation crust c3; The outer face of insulation crust b2 is provided with the quiet cover plate 9 that has opening, and the outer face of insulation crust c3 is provided with the moving cover plate 10 that has opening; The junction of insulation crust b2 and quiet cover plate 9 is provided with quiet grading shield 11; The junction of insulation crust c3 and moving cover plate 10 is provided with moving grading shield 12; The centre position is provided with shielding cylinder 15 in the shell of insulation crust b2 and insulation crust c3 formation; Also be provided with static conductive rod 5 and moving conductive rod 6 at the two ends of insulation crust a1, static conductive rod 5 passes quiet cover plate 9, and moving conductive rod 6 passes moving cover plate 10; The termination of static conductive rod 5 is provided with fixed contact 7, and the termination of moving conductive rod 6 is provided with moving contact 8, the distance between moving contact 8 and the fixed contact 7 at 15mm between the 24mm.Also be connected between moving contact 8 and the moving cover plate 10 through the bellowss 16 that are arranged on moving conductive rod 6 surfaces; Static conductive rod 5 is provided with quiet radome 13, and moving conductive rod 6 is provided with moving radome 14; Opening part at moving cover plate 10 is provided with fairlead 4, and moving conductive rod 6 stretches into insulation crust c3 through fairlead 4.
The structure of bellows 16 is as shown in Figure 2, and the bellows wall thickness is 0.17mm-0.20mm; Thickness of convolution a is 3mm-4mm; Pitch of waves t is 5mm-6mm, and D outer diameter is 60mm-70mm, and inner diameter d is 40mm-50mm, and wave number n is 18-22, and length L is 100mm-115mm.Bellows 16 waveforms are " S " type along the section shape of the longitudinal axis, and bellows 16 is selected stainless steel 0
22Cr
17Ni
12Mo
2(316L).Mainly guarantee the mechanical endurance of the 27.5kV of the utility model～40.5kV long life high-voltage vacuum interrupter, make vacuum interrupter reach 200,000 requirements mechanical endurance by the structure of bellows 16.
The utility model high voltage vacuum interrupter contacts under the closure state with moving contact 8 at fixed contact 7, and electric current to fixed contact 7, arrives moving conductive rod 6 through moving contact 8 via static conductive rod 5 again; When alternating current changed, electric current to moving contact 8, arrived static conductive rod 5 through fixed contact 7 by moving conductive rod 6 again.When fixed contact 7 and moving contact 8 do not contact when opening breaking current, high voltage vacuum interrupter plays the work of cutout.When the moment of cutout, electric current to fixed contact 7, arrives moving contact 8 through the electric arc between fixed contact 7 and the moving contact 8 via static conductive rod 5 again, is flowed out by moving conductive rod 6 at last; Perhaps, electric current arrives fixed contact 7 through electric arc again from moving conductive rod 6 arrival moving contacts 8, is flowed out by static conductive rod 5 at last, and the generation longitudinal magnetic field was controlled vacuum arc when electric current flow through fixed contact 7 with moving contact 8, thereby played the effect of outage.
The utility model high voltage vacuum interrupter through rationally choosing bellows material and structural parameters, makes vacuum interrupter reach 200,000 requirements mechanical endurance; And moving contact, static contact structure are reasonable in design, have guaranteed the long electric life requirement of arc control device.
Claims (3)
1. a high voltage vacuum interrupter is characterized in that, comprises insulation crust a (1), is provided with the shell that one deck is made up of two parts up and down in the insulation crust a (1), and wherein, top is divided into insulation crust b (2), and the bottom is divided into insulation crust c (3); The outer face of said insulation crust b (2) is provided with the quiet cover plate (9) that has opening, and the outer face of said insulation crust c (3) is provided with the moving cover plate (10) that has opening; Said insulation crust b (2) is provided with quiet grading shield (11) with the junction of quiet cover plate (9), and said insulation crust c (3) is provided with moving grading shield (12) with the junction of moving cover plate (10); Said insulation crust b (2) is provided with shielding cylinder (15) with the interior centre position of shell that insulation crust c (3) constitutes; The two ends of said insulation crust a (1) also are provided with static conductive rod (5) and moving conductive rod (6), and said static conductive rod (5) passes quiet cover plate (9), and said moving conductive rod (6) passes moving cover plate (10); The termination of said static conductive rod (5) is provided with fixed contact (7); The termination of said moving conductive rod (6) is provided with moving contact (8), also is connected through the bellows (16) that is arranged on moving conductive rod (6) surface between said moving contact (8) and the moving cover plate (10); Said static conductive rod (5) is provided with quiet radome (13), and said moving conductive rod (6) is provided with moving radome (14); The opening part of said moving cover plate (10) is provided with fairlead (4).
2. high voltage vacuum interrupter according to claim 1 is characterized in that, the distance between said moving contact (8) and the fixed contact (7) is 15mm-24mm.
3. high voltage vacuum interrupter according to claim 1 is characterized in that, said bellows (16) wall thickness is 0.17mm-0.20mm; The thickness of convolution is 3mm-4mm; The pitch of waves is 5mm-6mm, and external diameter is 60mm-70mm, and internal diameter is 40mm-50mm, and wave number is 18-22, and length is 100mm-115mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120297257XU CN202159627U (en) | 2011-08-16 | 2011-08-16 | High-pressure vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120297257XU CN202159627U (en) | 2011-08-16 | 2011-08-16 | High-pressure vacuum arc-extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159627U true CN202159627U (en) | 2012-03-07 |
Family
ID=45767253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120297257XU Expired - Fee Related CN202159627U (en) | 2011-08-16 | 2011-08-16 | High-pressure vacuum arc-extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159627U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035441A (en) * | 2012-12-17 | 2013-04-10 | 大连理工大学 | Line-shaped series-connection small-gap dual-fracture vacuum arc-extinguishing chamber |
| CN108493037A (en) * | 2018-03-02 | 2018-09-04 | 西安交通大学 | A kind of double acting conducting rod and bi-bellow structure for vacuum arc-chutes and working method |
| CN111370262A (en) * | 2020-04-16 | 2020-07-03 | 吉林锦续科技开发有限公司 | Electrical equipment switch device |
-
2011
- 2011-08-16 CN CN201120297257XU patent/CN202159627U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035441A (en) * | 2012-12-17 | 2013-04-10 | 大连理工大学 | Line-shaped series-connection small-gap dual-fracture vacuum arc-extinguishing chamber |
| CN108493037A (en) * | 2018-03-02 | 2018-09-04 | 西安交通大学 | A kind of double acting conducting rod and bi-bellow structure for vacuum arc-chutes and working method |
| CN111370262A (en) * | 2020-04-16 | 2020-07-03 | 吉林锦续科技开发有限公司 | Electrical equipment switch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20200816 |