CN201812685U - Static contact - Google Patents
Static contact Download PDFInfo
- Publication number
- CN201812685U CN201812685U CN2010205610364U CN201020561036U CN201812685U CN 201812685 U CN201812685 U CN 201812685U CN 2010205610364 U CN2010205610364 U CN 2010205610364U CN 201020561036 U CN201020561036 U CN 201020561036U CN 201812685 U CN201812685 U CN 201812685U
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- CN
- China
- Prior art keywords
- cylindrical shell
- cylinder
- fixed contact
- wall thickness
- utility
- 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 - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a static contact which comprises a hollow cylinder, wherein the thickness of the inner wall of the cylinder is increased in a step mode from top to bottom, the inner side and the outer side of an upper edge opening of the cylinder are both provided with a chamfer, and a mounting hole communicated with the inner cavity of the cylinder is arranged at the bottom of the cylinder. The utility mode has reasonable structure, is applicable to low-rated current circuit and a high-rated current circuit and can effectively prevent arc phenomenon between the static contact and a dynamic contact, thereby improving the safety of a circuit and prolonging service life.
Description
Technical field
The utility model relates to the accessory of power equipment, is a kind of fixed contact specifically.
Background technology
Fixed contact generally is used on the isolating switch, isolating switch is to use maximum a kind of electrical equipment in the high-voltage switch electric appliance, it plays buffer action in circuit, because the isolating switch use amount is big, functional reliability requires high, and is all bigger to the influence of design, foundation and the safe operation of electric substation, power plant.The main feature of isolating switch is no arc extinguishing ability, can only not have to divide under the situation of load current, close circuit.Because in the moment of switch folding, can produce electric arc between fixed contact and the moving contact, frequent switch closure, fixed contact is damaged easily, reduce its useful life, and can badly influence the fail safe of high voltage power distribution, for the fail safe that improves high voltage power distribution just needs often to change fixed contact, therefore increased cost virtually.
The utility model content
Goal of the invention: at above-mentioned technical problem, the purpose of this utility model is for a kind of security performance height, fixed contact that arc extinguishing is good, applied widely are provided.
Technical scheme: in order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of fixed contact, comprise the hollow cylindrical cylindrical shell, the interior wall thickness of described cylindrical shell is staged from top to bottom and increases, the medial and lateral of described cylindrical shell upper mouth are equipped with chamfering, have the installing hole that communicates with cylinder lumen in the cylindrical shell bottom.
The thick three phases that is divided into of described cylinder inboard wall is followed successively by 20cm, 31cm, 58cm from top to bottom.
The thick three phases that is divided into of described cylinder inboard wall is followed successively by 20cm, 31cm, 88cm from top to bottom.
Be provided with breach in described cylindrical shell bottom outside.
Beneficial effect: compared with prior art, the utility model has the advantages that: rational in infrastructure, can be applicable to the circuit of low rated current and the circuit of high rated current; Can prevent effectively that the arc phenomenon between fixed contact and the moving contact from occurring, thus the fail safe that can improve circuit, and can increase the service life.
Description of drawings
Fig. 1 is the structural representation of the utility model first embodiment;
Fig. 2 is the structural representation of the utility model second embodiment.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection range of the present utility model.
As shown in Figure 2, a kind of fixed contact of the utility model comprises hollow cylindrical cylindrical shell 1, and the interior wall thickness of described cylindrical shell 1 is staged from top to bottom and increases, the medial and lateral of described cylindrical shell 1 upper mouth are equipped with chamfering, have the installing hole 2 that communicates with cylindrical shell 1 inner chamber in cylindrical shell 1 bottom.
Embodiment 1: as shown in Figure 1, a kind of fixed contact comprises hollow cylindrical cylindrical shell 1, and the interior wall thickness of described cylindrical shell 1 is staged from top to bottom and is divided into three phases, the medial and lateral of described cylindrical shell 1 upper mouth are equipped with chamfering, have the installing hole 2 that communicates with cylindrical shell 1 inner chamber in cylindrical shell 1 bottom; Be provided with breach 3 in cylindrical shell 1 bottom outside; Wall thickness is followed successively by 20cm, 31cm, 58cm from top to bottom in its middle cylinder body 1; On the whole cylindrical shell 1, wall thickness is that the cylindrical shell 1 of 20cm is 89cm for 32cm, internal diameter highly; Wall thickness is that the cylindrical shell 1 of 31cm is 78cm for 21cm, internal diameter highly; Wall thickness is that the cylindrical shell 1 of 58cm is 21cm for 22cm, internal diameter highly; The diameter of installing hole 2 is 51cm; The chamfering in the upper mouth outside is 15 °.Breach 3 is the column breach, and its radius is 9cm, highly for 15cm.
Embodiment 2: as shown in Figure 2, a kind of fixed contact comprises hollow cylindrical cylindrical shell 1, and the interior wall thickness of described cylindrical shell 1 is staged from top to bottom and is divided into three phases, and wall thickness is divided into three phases in the cylindrical shell 1, is followed successively by 20cm, 31cm, 88cm from top to bottom; On the whole cylindrical shell 1, wall thickness is that the cylindrical shell 1 of 20cm is 59cm for 32cm, internal diameter highly; Wall thickness is that the cylindrical shell 1 of 31cm is 48cm for 21cm, internal diameter highly; Wall thickness is that the cylindrical shell 1 of 58cm is 21cm for 22cm, internal diameter highly; The diameter of installing hole 2 is 51cm; The chamfering in the upper mouth outside is 15 °.
Claims (4)
1. fixed contact, it is characterized in that, comprise hollow cylindrical cylindrical shell (1), the interior wall thickness of described cylindrical shell (1) is staged from top to bottom and increases, the medial and lateral of described cylindrical shell (1) upper mouth are equipped with chamfering, have the installing hole (2) that communicates with cylindrical shell (1) inner chamber in cylindrical shell (1) bottom.
2. fixed contact according to claim 1 is characterized in that, the interior wall thickness of described cylindrical shell (1) is divided into three phases, is followed successively by 20cm, 31cm, 58cm from top to bottom.
3. fixed contact according to claim 1 is characterized in that, the interior wall thickness of described cylindrical shell (1) is divided into three phases, is followed successively by 20cm, 31cm, 88cm from top to bottom.
4. fixed contact according to claim 3 is characterized in that, is provided with breach (3) in described cylindrical shell (1) bottom outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205610364U CN201812685U (en) | 2010-10-14 | 2010-10-14 | Static contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205610364U CN201812685U (en) | 2010-10-14 | 2010-10-14 | Static contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812685U true CN201812685U (en) | 2011-04-27 |
Family
ID=43895624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205610364U Expired - Fee Related CN201812685U (en) | 2010-10-14 | 2010-10-14 | Static contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812685U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950697A (en) * | 2010-10-14 | 2011-01-19 | 句容市华通电器有限公司 | Fixed contact |
| CN104143776A (en) * | 2013-09-27 | 2014-11-12 | 国家电网公司 | Fixed contact connecting structure and switch cabinet with same |
-
2010
- 2010-10-14 CN CN2010205610364U patent/CN201812685U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950697A (en) * | 2010-10-14 | 2011-01-19 | 句容市华通电器有限公司 | Fixed contact |
| CN104143776A (en) * | 2013-09-27 | 2014-11-12 | 国家电网公司 | Fixed contact connecting structure and switch cabinet with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20111014 |