CN201788919U - High voltage dropout fuse free of fusing - Google Patents
High voltage dropout fuse free of fusing Download PDFInfo
- Publication number
- CN201788919U CN201788919U CN2010201383003U CN201020138300U CN201788919U CN 201788919 U CN201788919 U CN 201788919U CN 2010201383003 U CN2010201383003 U CN 2010201383003U CN 201020138300 U CN201020138300 U CN 201020138300U CN 201788919 U CN201788919 U CN 201788919U
- Authority
- CN
- China
- Prior art keywords
- high voltage
- electromagnetic coil
- armature
- fuse
- dropout fuse
- 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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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a high voltage dropout fuse free of fusing and applicable to the field of high voltage power supply. The high voltage drop fuse is characterized in that one end of an electromagnetic coil is connected with a high voltage power source through a high voltage connecting terminal; the other end of the electromagnetic coil is connected with an upper contact; an armature is arranged in a corresponding position of the electromagnetic coil; and a movable contact is connected with the lower contact through a communicating pipe for supplying power to a load side. When the high voltage current passing through the dropout fuse reaches a certain preset value, a certain electromagnetic force is produced in the electromagnetic coil, the armature is attracted for overcoming the displacement produced by the elasticity of a return spring, the movable contact is compelled to be separated from the upper contact, the movable contact and the communicating pipe are enabled to downward drop, and the power of the load side is cut off. When the current falls back, the electromagnetic force in the electromagnetic coil is reduced, and the armature returns under the action of the return spring, so that the power can be still supplied without maintenance, and the defect that the conventional dropout fuse needs to be replaced after burned out is overcome. The electromagnetic coil used in the high voltage dropout fuse can adopt an alternating current electromagnetic coil or a direct current electromagnetic coil, and can also adopt a high voltage electromagnetic coil or a low voltage electromagnetic coil.
Description
Technical field
The utility model provides a kind of fusing type of exempting from high pressure fall insurance that uses in the high voltage supply field.
Background technology
At present, fall insurance uses very extensive in the high voltage supply field.This fall insurance is to rely on the back fusing of fuse overload and the high-voltage electrical equipment of realization power-off protection.Existing fall insurance must be changed the fuse fall insurance and could close a floodgate again and work on after fuse fuses because of overload, so not only lost time but also waste material, incurs loss through delay power-on time.
Summary of the invention
Need the deficiency changing and safeguard behind the existing fall insurance fuse failure in order to overcome.The utility model provides a kind of fusing type fall insurance of exempting from, and this is exempted from fusing type fall insurance and need not to safeguard after falling because of overload and change fuse and can close a floodgate and work on.
The technical scheme that its technical problem that solves the utility model adopts is: this is exempted from, and fusing type fall insurance mainly contains high-voltage connection terminal, solenoid, armature, upper contact head, back-moving spring, moving contact, communicating pipe, porcelain insulator, the contact each several part constitutes down.One end of solenoid is connected with high voltage source through high-voltage connection terminal, and the other end of solenoid is connected with upper contact head.At the solenoid correspondence position armature is installed.Moving contact is connected with following contact through communicating pipe and powers to load side.When reaching a certain predetermined value, the high-tension current by fall insurance produces certain electromagnetic force in the solenoid, the elastic force that attracts armature to overcome back-moving spring produces displacement, force moving contact and upper contact head to be thrown off moving contact was dropped down together with communicating pipe, load side is cut off the power supply.Electric current falls the interior electromagnetic force of back solenoid after rise and reduces armature this moment homing under the effect of back-moving spring.Do not need to safeguard the operation of just can closing a floodgate again like this, overcome the deficiency that needs to change fuse behind the existing fall insurance fuse failure.Employed solenoid can adopt AC electromagnetic coil also can adopt d-c solenoid, can adopt the high-tension electricity magnetic coil also can adopt the low voltage electromagnetic coil in the utility model.
The beneficial effects of the utility model are, when the high-tension current that passes through reaches a certain predetermined value, produce the elastic force that certain electromagnetic attracting force armature overcomes back-moving spring in the solenoid and produce displacement, force moving contact and upper contact head to be thrown off, moving contact was dropped down together with communicating pipe, load side is cut off the power supply.Electric current falls the interior electromagnetic force of back solenoid after rise and reduces armature this moment homing under the effect of back-moving spring.Do not need to safeguard the operation of just can closing a floodgate again like this.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Embodiment
" 1 " high-voltage connection terminal in Fig. 1, " 2 " upper contact head, " 3 " back-moving spring, " 4 " solenoid, " 5 " armature, " 6 " moving contact, " 7 " operation ring, " 8 " communicating pipe, " 9 " porcelain insulator, " 10 " are contact down.
In Fig. 1, solenoid " 4 " is connected in series together with upper contact head " 2 ", armature " 5 " is installed in the correspondence position of solenoid " 4 ", solenoid when the electric current by fall insurance reaches certain certain value " 4 " will produce certain electromagnetic force, the elastic force that attracts armature " 5 " to overcome back-moving spring " 3 " produces displacement, force moving contact " 6 " with upper contact head " 2 " disengagement and together with dropping down communicating pipe " 8 ", load side is cut off the power supply.The electromagnetic force that electric current falls back solenoid " 4 " after rise reduces, and armature this moment " 5 " is homing under doing of back-moving spring " 3 " used.The operation of so just can closing a floodgate again.
Claims (1)
1. the fusing type of exempting from high pressure fall insurance that uses in the high voltage supply field, form by solenoid, armature, upper contact head, back-moving spring, the first-class each several part of movable contact, it is characterized in that: solenoid and upper contact head polyphone join, and the solenoid correspondence position links armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201383003U CN201788919U (en) | 2010-03-02 | 2010-03-02 | High voltage dropout fuse free of fusing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201383003U CN201788919U (en) | 2010-03-02 | 2010-03-02 | High voltage dropout fuse free of fusing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788919U true CN201788919U (en) | 2011-04-06 |
Family
ID=43820875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201383003U Expired - Fee Related CN201788919U (en) | 2010-03-02 | 2010-03-02 | High voltage dropout fuse free of fusing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201788919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646559A (en) * | 2012-04-11 | 2012-08-22 | 福建省连城县供电有限公司 | Automatic disconnecting device of high-voltage falling type switch |
-
2010
- 2010-03-02 CN CN2010201383003U patent/CN201788919U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646559A (en) * | 2012-04-11 | 2012-08-22 | 福建省连城县供电有限公司 | Automatic disconnecting device of high-voltage falling type switch |
| CN102646559B (en) * | 2012-04-11 | 2014-08-13 | 国家电网公司 | Automatic disconnecting device of high-voltage falling type switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Shen Junguo Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20130302 |