CN2311848Y - Stationary contact and flexible connecting mechanism for high voltage vacuum switch - Google Patents
Stationary contact and flexible connecting mechanism for high voltage vacuum switch Download PDFInfo
- Publication number
- CN2311848Y CN2311848Y CN 97220387 CN97220387U CN2311848Y CN 2311848 Y CN2311848 Y CN 2311848Y CN 97220387 CN97220387 CN 97220387 CN 97220387 U CN97220387 U CN 97220387U CN 2311848 Y CN2311848 Y CN 2311848Y
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- contact
- static
- utility
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- pad
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a static contact and flexible connecting mechanism for a high-voltage vacuum switch. An electric-conducting rod is fixed on a casing, the lower end of the casing is provided with a static contact which is corresponding to a moving contact, and static-end installing pedestal which is connected by a regulating screw is arranged on a contact plane of electric conduction. The utility model is characterized in that a soft connecting element and a flexible pad which are stacked with each other in series are arranged at the contact plane of the electric conduction and the static-end installing pedestal. When the utility model is used, the prestressing force can be regulated and can be ensured to be unchanged by making use of a limiting stop pad and a limiting hole of the static-end installing pedestal. The utility model has the advantages that the rebound energy which is generated by the transient and quick impact of the switching action of the switch is absorbed by the flexible pad; so the rebound energy is relieved, the bounce of the switching action is conquered, and the switch damage is lightened; thereby, the stability and the reliability of the mechanical parameter are improved, and the adjusting period and the service life are prolonged.
Description
The utility model relates to the technology that flexibly connects of high-pressure vacuum switch stationary contact.
High-pressure vacuum switch is the instantaneous of contact just of closing a floodgate, the bump bounce-back energy that dynamic and static contact is very big because of collision produces, can cause spring and destructive power, because the conduction contact plane and the quiet end mounting base of the high-pressure vacuum switch of China's production at present and use are directly rigidly connected, above-mentioned spring and destructive power certainly will cause the destruction to switch integral body, influenced the stability and the dependability of switch mechanical parameter, and reduced useful life.
The utility model improves at the existing in prior technology defective, proposes a kind of utilization and flexibly connects the high-pressure vacuum switch stationary contact flexible linking device of alleviating bump bounce-back energy.
Realize that design of the present utility model is to utilize the compressibility of flexible member and the bounce-back energy that absorbability is alleviated bump.Its concrete scheme is to fix the conducting rod that stretches into the worn-out tube of arc control device screen on shell, the fixed contact relative with moving contact fixed in the lower surface of conducting rod, the conduction contact plane of conducting rod is provided with the quiet end mounting base that is connected by adjustment screw, and is provided with mutual string folded flexible link and pad between conduction contact plane and quiet end mounting base.
Between quiet end mounting base and adjustment screw, be provided with simultaneously and regulate the adjustment structure that contacts precompression.
Advantage of the present utility model is that the contact just of switch combined floodgate is instantaneous, because the bump bounce-back when having pad to absorb quick the combined floodgate between dynamic and static contact can, overcome the spring between dynamic and static contact effectively, and the damage to whole switch that is caused is clashed in alleviation, thereby improved the stability and the dependability of switching mechanism parameter, prolonged use adjustment cycle and useful life.
Description of drawings.
Fig. 1 is the utility model gate-dividing state structural representation.
Fig. 2 is the utility model "on" position structural representation.
Elaborate again below in conjunction with accompanying drawing.
Shown in Fig. 1-2, high-pressure vacuum switch stationary contact flexible linking device is included in pottery magnetic shell (1) and goes up the conducting rod (9) that arc control device (10) shielding cylinders (12) are fixedly stretched in welding, the lower surface welding that is in the conducting rod in the shielding cavity (14) is being fixed and the relative fixed contact (11) of moving contact (13) of importing external force, be provided with mutual string folded flexible link (7) and pad (2) between the conduction contact plane (15) of conducting rod and the quiet end mounting base (3), the thickness of pad its pre-compressed state is X, is fixed with one by adjustment screw (8).
Simultaneously between quiet end mounting base (3) and adjustment screw (8), the adjustment structure that contacts precompression is set, this structure comprises spacing stop pad (5), it has up and down stop flange (4) in diametric(al) respectively, upwards stop flange contacts with the hex surface of adjustment screw (8), stop flange embeds in the spacing hole (6) of quiet end mounting base (3) downwards, realize the adjusting of contact precompression and guarantee that precompression is constant, but upwards the upwards stop flange that stop flange must stamping-out be good in advance again after the contact precompression is adjusted be pulled up, reaches with till the hex surface of adjustment screw contacts.
When the gate-dividing state of Fig. 1, the conduction contact plane (15) of arc control device fixed contact (11) end fits tightly with flexible link (7) under the effect of the contact precompression of pad (2), contacts precompression and limits constant by the structural relation between adjustment screw (8) and spacing hole (6), the spacing stop pad (5).Gate-dividing state guarantees that by the contact precompression conduction contact plane of flexible link and the quiet end of arc control device fits tightly, and prevents the contact-making surface oxidation.
When the "on" position of Fig. 2, the conduction contact plane (15) of arc control device fixed contact (11) end is under the effect of switch combined floodgate end pressure, in the rated pressure scope that requires to reach, closely contact conducting with flexible link (7), the stressed further compression of pad (2) this moment, make its thickness be compressed to Y by original X, between the lower plane of adjustment screw this moment (8) and the spacing stop pad (5) E=X-Y gap E appears.During "on" position, guarantee to satisfy the specified contact pressure of switch by switch combined floodgate end pressure.
Dynamic structure of the present utility model is such: switch closes a floodgate instantaneous, the speed band of moving contact about with 0.6 meter per second power (this power changes with the size of switch rated current) the bump fixed contact of contact 700-2500N just, producing instantaneous bump bounce-back can, this can be through the conduction contact plane of conducting rod, flexible link is delivered to pad, it is subjected to force compresses at that time, and absorbed instantaneous Impact energy, begin bounce-back during greater than first contact precompression up to compression stress, this moment is moving, the contact-making surface of fixed contact closely contacts under greater than the effect of first contact pressure, and the fluctuation that between pad and moving contact compression spring (not shown), suspends, overcome moving, spring between the fixed contact, alleviate destructive power, and along with the adding fluctuation of combined floodgate end pressure disappears immediately.
Claims (2)
1. high-pressure vacuum switch stationary contact flexible linking device, on shell (1), fixing the conducting rod (9) that stretches into arc control device (10) shielding cylinders (12), the fixed contact (11) relative with moving contact (13) fixed in the lower surface of conducting rod, the conduction contact plane (15) of conducting rod is provided with the quiet end mounting base (3) that is connected by adjustment screw (8), it is characterized in that being provided with between described conduction contact plane (15) and the quiet end mounting base (3) mutual string folded flexible link (7) and pad (2).
2. high-pressure vacuum switch stationary contact flexible linking device as claimed in claim 1 is characterized in that being provided with between described quiet end mounting base (3) and the adjustment screw (8) and regulates the adjustment structure that contacts precompression.This structure comprises spacing stop pad (5), and it has stop flange (4) up and down respectively, and upwards stop flange contacts with adjustment screw (8), and stop flange embeds in the spacing hole (6) of quiet end mounting base (3) downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220387 CN2311848Y (en) | 1997-07-10 | 1997-07-10 | Stationary contact and flexible connecting mechanism for high voltage vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220387 CN2311848Y (en) | 1997-07-10 | 1997-07-10 | Stationary contact and flexible connecting mechanism for high voltage vacuum switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2311848Y true CN2311848Y (en) | 1999-03-24 |
Family
ID=33936079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97220387 Expired - Fee Related CN2311848Y (en) | 1997-07-10 | 1997-07-10 | Stationary contact and flexible connecting mechanism for high voltage vacuum switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2311848Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254758A (en) * | 2011-07-28 | 2011-11-23 | 苏州鼎能电力设备有限公司 | Arc extinguish chamber applied to breaker |
| CN102760607A (en) * | 2012-07-24 | 2012-10-31 | 上海天灵开关厂有限公司 | Pressure-operated load switch for gas-insulated ring main unit |
-
1997
- 1997-07-10 CN CN 97220387 patent/CN2311848Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254758A (en) * | 2011-07-28 | 2011-11-23 | 苏州鼎能电力设备有限公司 | Arc extinguish chamber applied to breaker |
| CN102254758B (en) * | 2011-07-28 | 2014-05-14 | 苏州鼎能电力设备有限公司 | Arc extinguish chamber applied to breaker |
| CN102760607A (en) * | 2012-07-24 | 2012-10-31 | 上海天灵开关厂有限公司 | Pressure-operated load switch for gas-insulated ring main unit |
| CN102760607B (en) * | 2012-07-24 | 2014-10-29 | 上海天灵开关厂有限公司 | Pressure-operated load switch for gas-insulated ring main unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |