CN202159629U - High-voltage load switch - Google Patents
High-voltage load switch Download PDFInfo
- Publication number
- CN202159629U CN202159629U CN2011202172273U CN201120217227U CN202159629U CN 202159629 U CN202159629 U CN 202159629U CN 2011202172273 U CN2011202172273 U CN 2011202172273U CN 201120217227 U CN201120217227 U CN 201120217227U CN 202159629 U CN202159629 U CN 202159629U
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- CN
- China
- Prior art keywords
- load switch
- oil
- switch
- fixed contact
- cavity body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility mode relates to a high-voltage load switch, wherein a sealed casing of the switch comprises a fixed contact, a moving contact and a driving device. A cavity body is arranged in the moving contact, oil used for blowing out electric arc generated during brake separating and a piston device used for pushing the oil out of the cavity body are contained in the cavity body, and an oil outlet hole is arranged on the end face of the cavity body corresponding to the fixed contact. When the switch is turned off, the piston device pushes the oil out of the cavity body to eject towards the fixed contact so as to extinguish the generated electric arc. The load switch is in a direct-acting structure, the contacts are round, and a magnetic field is even in distribution, thereby having large breaking capacity. The load switch can quickly blow out the electric arc generated when the switch is turned off, thereby being very favorable for cutting off overvoltage caused by internal fault of a transformer, line fault or thunder and lightning. Simultaneously, cutting-off performance is reinforced and fracture distance is enlarged. Even if the load switch is immersed in oil, insulation performance of the load switch cannot be affected by altitude, and humid, rainy, dusty environments and other environments.
Description
Technical field
The utility model relates to the correlative technology field of centrifugal pump hermetically-sealed construction, is specifically related to a kind of high voltage load switch.
Background technology
On-load switch is a kind of device for switching between circuit breaker and isolating switch, has simple arc-control device, can cut off rated load electric current and certain overload current.
Along with electrical network develops fast; Requiring of switching devices connecting-disconnecting function is increasingly high, and existing on-load switch is immersed in the oil tank of transformer, and the electric arc that produces between fixed contact and moving contact during the on-load switch disjunction can produce high temperature; Transformer oil is easy to generate gas; When reaching a certain amount of, transformer oil will upgrade again, waste very big.
The utility model content
To above-mentioned defective; The purpose of the utility model provides a kind of high voltage load switch; The electric arc that produces between fixed contact and moving contact during with the on-load switch disjunction that solve to pass can produce high temperature; Cause transformer oil to produce gas easily, when reaching a certain amount of, the technical problem that need upgrade of transformer oil then.
For realizing above-mentioned purpose, the technical scheme below the utility model has adopted:
A kind of high voltage load switch; Be arranged at the fixed contact of quiet side in the housing; Be arranged at the moving contact and the drive unit thereof of moving side, described moving contact can contact along the straight line advance and retreat and with fixed contact or separate, and described moving contact inside is provided with cavity; Be provided with the oil of the electric arc that produces when being used to put out separating brake and the piston apparatus that is used for oil is released cavity in the cavity, be provided with oil outlet with the end face of the corresponding cavity of fixed contact; When the switch separating brake, described piston apparatus is released cavity with oil, sprays to fixed contact to extinguish the electric arc of generation.
According to the described high voltage load switch of the utility model preferred embodiment, the end face of described moving contact is circular.
According to the described high voltage load switch of the utility model preferred embodiment, described housing is the accommodation space of a sealing, and is immersed in the outside fuel tank.
Owing to adopted above technical characterictic, made the utility model have following advantage and good effect than prior art:
On-load switch is a direct dynamic structure, and contact is circular, and Distribution of Magnetic Field is even, has bigger breaking capacity; The electric arc that on-load switch produces in the time of putting out separating brake rapidly, highly beneficial to cut-offfing the overvoltage that causes because of power transformer interior fault, line fault or thunder and lightning; In order to strengthen break performance, strengthened the fracture distance simultaneously; On-load switch is dipped in the oil, and its insulation property do not receive the influence of environment such as height above sea level, moist rainy, rocky dirt.
Description of drawings
Fig. 1 is the structural representation of the utility model high voltage load switch closing position;
Fig. 2 is the structural representation in the utility model high voltage load switch separating brake process.
Embodiment
Be described in detail below in conjunction with the preferred embodiment of accompanying drawing, but the utility model is not restricted to these embodiment the utility model.The utility model is contained substituting of making on any marrow and scope at the utility model, modification, equivalent method and scheme.Understand for the public is had completely the utility model, in following the utility model preferred embodiment, specified concrete details, and do not had the description of these details also can understand the utility model fully for a person skilled in the art.
A kind of high voltage load switch as shown in Figure 1; Its housing 1 is the accommodation space of a sealing; And be immersed in the outside fuel tank, be arranged at the fixed contact 2 of quiet side in the housing 1, be arranged at the moving contact 3 and the drive unit thereof of moving side; Described moving contact 3 can contact along the straight line advance and retreat and with fixed contact 2 or separate, and the end face of described moving contact 3 is circular.Described moving contact 3 inside are provided with cavity 4, and the piston apparatus 6 that is provided with the oil 5 of the electric arc that produces when being used to put out separating brake in the cavity 4 and is used for oil is released cavity is provided with oil outlet with the end face of fixed contact 2 corresponding cavitys 4.On-load switch is a direct dynamic structure, and contact is circular, and Distribution of Magnetic Field is even, has bigger breaking capacity.
As shown in Figure 2 when the switch separating brake, described piston apparatus 6 is released cavity with oil 5, sprays to fixed contact 2 to put out electric arc rapidly with certain speed.This is highly beneficial to cut-offfing the overvoltage that causes because of power transformer interior fault, line fault or thunder and lightning; In order to strengthen break performance, strengthened the fracture distance simultaneously.On-load switch is dipped in the oil, and its insulation property do not receive the influence of environment such as height above sea level, moist rainy, rocky dirt.When fuse any fused mutually, on-load switch i.e. tripping operation at once; Because on-load switch ability automatic brake separating cooperates with the low pressure main circuit breaker, can make all rapid separating brake of main transformer its high and low voltage switch when suffering the overvoltage infringement, main transformer is broken away from, avoid bigger loss.
The utility model preferred embodiment just is used for helping to set forth the utility model.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this utility model yet and is merely described embodiment.Obviously, according to the content of this specification, can do a lot of modifications and variation.These embodiment are chosen and specifically described to this specification, is principle and practical application in order to explain the utility model better, thereby person skilled can be utilized the utility model well under making.The utility model only receives the restriction of claims and four corner and equivalent.
Claims (3)
1. high voltage load switch; Comprise housing, be arranged at the fixed contact of quiet side in the housing, be arranged at the moving contact and the drive unit thereof of moving side; Described moving contact can contact along the straight line advance and retreat and with fixed contact or separate; It is characterized in that: described moving contact inside is provided with cavity, is provided with the oil of the electric arc that produces when being used to put out separating brake and the piston apparatus that is used for oil is released cavity in the cavity, is provided with oil outlet with the end face of the corresponding cavity of fixed contact; When the switch separating brake, described piston apparatus is released cavity with oil, sprays to fixed contact to extinguish the electric arc of generation.
2. a kind of high voltage load switch as claimed in claim 1 is characterized in that: the end face of described moving contact is for circular.
3. according to claim 1 or claim 2 a kind of high voltage load switch, it is characterized in that: described housing is the accommodation space of a sealing, and is immersed in the outside fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202172273U CN202159629U (en) | 2011-06-24 | 2011-06-24 | High-voltage load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202172273U CN202159629U (en) | 2011-06-24 | 2011-06-24 | High-voltage load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159629U true CN202159629U (en) | 2012-03-07 |
Family
ID=45767255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202172273U Expired - Lifetime CN202159629U (en) | 2011-06-24 | 2011-06-24 | High-voltage load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950460A (en) * | 2018-07-05 | 2018-12-07 | 秦小梅 | A kind of ultrasound electric arc metal spraying device |
-
2011
- 2011-06-24 CN CN2011202172273U patent/CN202159629U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950460A (en) * | 2018-07-05 | 2018-12-07 | 秦小梅 | A kind of ultrasound electric arc metal spraying device |
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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: 20120307 |