CN202602094U - Apparatus capable of ensuring reliable grounding of enclosed expulsion fuse under maintenance state - Google Patents
Apparatus capable of ensuring reliable grounding of enclosed expulsion fuse under maintenance state Download PDFInfo
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- CN202602094U CN202602094U CN 201120542627 CN201120542627U CN202602094U CN 202602094 U CN202602094 U CN 202602094U CN 201120542627 CN201120542627 CN 201120542627 CN 201120542627 U CN201120542627 U CN 201120542627U CN 202602094 U CN202602094 U CN 202602094U
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- fuse
- expulsion
- enclosed
- expulsion fuse
- carrier body
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Abstract
The utility model, which belongs to the safety appliance filed, relates to an apparatus capable of ensuring reliable grounding of an enclosed expulsion fuse under a maintenance state. The apparatus comprises three truncated fuse carrier tube bodies, copper wires connected with all the truncated fuse carrier tube bodies, and a common ground wire. The copper wires are connected with ends of load sides of the fuse carrier tube bodies; and the copper wires of all the truncated fuse carrier tube bodies are connected with the common ground wire. And insulation isolation layers are arranged at the front ends of the truncated fuse carrier tube bodies. According to the utility model, a novel grounding apparatus for the fuse is provided by aiming at the special structure of an insulated and enclosed type expulsion fuse. The provided apparatus has advantages of easiness implementation and convenient operation; much inconvenience caused by the utilization of the existing operation tool or the operating method can be avoided; and the field operation procedure or process can be simplified under the premise that the security and the grounding effect are ensured and thus the field work efficiency is improved. The apparatus can be widely applied to the secure operation tool field for the power circuit employing the enclosed expulsion fuse.
Description
Technical field
The utility model belongs to the safety appliance field, relates in particular to a kind of device that is used for enclosed type injecting type power fuse reliable ground.
Background technology
The inspecting state of controller switching equipment is meant certain station power distribution equipment state out of service; Form significantly visible cut-off point between this equipment and the power supply; While is run pass formation power supply jointly and send electricity to this repair apparatus in order to prevent gap discharge or other possible mistakes; Cause equipment or personnel's harm, with three-phase shortcircuit and effective grounding, be called as the inspecting state that is in of this controller switching equipment in its power failure side.
Present stage utility model people belongs to Utilities Electric Co., and to use maximum be that high-tension fuse is the PRW-10/100-6.3 expulsion fuse.Its fuse is made up of pedestal, arc-extinction device two parts, and there is rotating torque spring the expulsion tube lower end, and after fuse element was packed into, torque spring was tightened, and made fuse element be in tension.When the equipment failed because, fuse element fuses, and cartridge fuse falls rapidly by the elastic force effect of torque spring, state out of service.
The rear end equipment of such its protection of fuse during repair and maintenance, adopts supporting special-purpose earth connection if desired, and with the three-phase fuse-element short circuit, ground connection can guarantee that this controller switching equipment reaches the ground connection security effect of regulation simultaneously.
Buttock line goes out to have a special-purpose specialized structure that earthing device is installed under the existing P RW-10/100-6.3 expulsion fuse, is called as the ground connection stalk, and professional earth connection can be connected on the ground connection stalk, forms three-phase short circuit ground connection, forms inspecting state.Guaranteed to make that the power distribution equipment of rear end is in the safety ground state in apparatus for examination and repair.
But because the time of PRW-10/100-6.3 expulsion fuse research and development early; And electric power enterprise is had higher requirement for the reliability and stability of equipment; Expulsion fuse is because of the deficiency in technology and the flexibility, and the update of high-tension fuse is brought into schedule.
EC-10 type insulator seal closed form expulsion fuse is a kind of newly developed, is applicable to the high voltage short circuit protective device of the pole type transformer below the 400KVA.Being characterized in sealing original exposed electrode, cartridge fuse, fuse has all changed into built-in; Closed structure; It can avoid air pollution significantly, and environmental factor also has characteristics such as good stability, reliability height simultaneously to the influence of high-tension fuse.
EC-10 type insulator seal closed form expulsion fuse is because its hermetically sealed property, causes when circuit/overhaul of the equipments, can't installing the ground connection stalk additional and come operational grounding according to existing earthing mode to the PRW-10/100-6.3 expulsion fuse.
If the structure according to existing expulsion fuse on EC-10 type insulator seal closed form expulsion fuse installs the ground connection stalk additional; Just will certainly destroy the structure that it has sealing; Insulation to its shell impacts; Simultaneously, this improvement also is contrary with the type fuse Equipment Design original intention.
But; If the lightning arrester end of lead-in wire interface sets up the ground connection stalk under high-tension fuse; Realize operational grounding by this; And not considering earlier on lightning arrester, to install additional the ground connection stalk can only be because following problems will appear in the difference of EC-10 type insulator seal closed form expulsion fuse self mode of operation to the adverse effect that is caused aspect the 26S Proteasome Structure and Function of lightning arrester:
On the one hand, the about 1200mm of hook stick length of EC-10 type insulator seal closed form expulsion fuse is about 3000mm and belong to Utilities Electric Co. the utility model people for the standard design length of the hook stick of fuse devices such as PRW and H type, HH type.
In practical operation to fuse device; Because the restriction of overhead vehicle and surrounding environment; The hook stick of 3000mm left and right sides length can satisfy in the operation of most of fuse device safe distance requirement; But be to use the EC-10 type insulator seal closed form expulsion fuse dedicated operations rod of 1200mm, then be difficult to guarantee the requirement of safety operation distance.
So, in a lot of workplaces and since operating space and safe distance restriction, the work pattern that the site operation personnel can only give up original " people carries out the ground connection operation in overhead vehicle " is implemented manual work and is pedaled the bar operation, carries out corresponding each item security and operates.
On the other hand; In the overhaul of the equipments process, behind the EC-10 type insulator seal closed form expulsion fuse of stopping using, carry out the ground connection operation again; And use existing earth rod; Ground connection can be brought certain burden to operating personnel unavoidably, and the length of existing earth rod is about about 1800mm simultaneously, when using this kind earth rod to EC-10 insulator seal closed form expulsion fuse implementation and operation ground connection; To readjust the personnel's of ascending a height job position unavoidably once more, cause certain potential safety hazard for site operation personnel's personal safety.
The utility model content
The utility model technical problem to be solved provides a kind of device that guarantees enclosed type expulsion fuse reliable ground under inspecting state; It provides the earthing device of such fuse targetedly to the special construction of insulator seal closed form expulsion fuse, and it is with strong points; Easy to implement; Be convenient to operation, can avoid the inconvenience of existing operation tool or method of operation, help under the prerequisite that guarantees safety and ground connection effect; Simplify field operation program and step, improve work on the spot efficient.
The technical scheme of the utility model is: a kind of device that guarantees enclosed type expulsion fuse reliable ground under inspecting state is provided; Comprise the common ground line, it is characterized in that: described device comprises three fusing carrier bodys that block, the copper conductor and the common ground line that are connected with fusing carrier body that each blocks; Wherein, described copper conductor is connected with the end of fusing carrier body load side; The copper conductor of the said fusing carrier body that each blocks is connected with the common ground line.
Further, first of the said fusing carrier body that blocks, hold, dielectric isolation layer is set.
Its described dielectric isolation layer is the electro-insulating rubber layer.
The head end of the said fusing carrier body that blocks, and the distance between the fuse mains side grafting termination are greater than the corresponding safe distance of fuse place power-supply system electric pressure.
Compare with prior art, the utility model has the advantages that:
1. the fusing carrier body that blocks is inserted the position of former fusing carrier body; At the end that blocks the fusing carrier body (load side) ground connection is set and connects lead; The ground connection of being served as enclosed type expulsion fuse device by the fusing carrier body that blocks connects stalk; It was not both changed enclosed type expulsion fuse device main body structure, had realized the reliable ground of enclosed type expulsion fuse load side again;
2. utilize useless fusing carrier body to process the ground connection connecting elements, meet economic, practical principle, change a social system with low cost;
3. whole technical proposal is succinct, and it is convenient to implement, and operating procedure is simple, has guaranteed the reliable ground of enclosed type expulsion fuse under inspecting state.
Description of drawings
Fig. 1 is the structural representation of the utility model method.
1 is the fusing carrier body among the figure, and 2 is copper conductor, and 3 is the common ground line, and 4 is dielectric isolation layer, and 5 is the end of fusing carrier body load side.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Among Fig. 1; Waste and old fusing carrier body 1 is blocked; Keep the part body that it is connected with load side, the link (end) 5 in institute's fusing carrier body and fuse load side connects/draws copper conductor 2; The copper conductor of three said ground connection connecting elementss is carried out short circuit, just constituted one group three the ground connection coupling assembling/devices that have common ground line 3.
In order to ensure the insulation effect between end and the fuse mains side first of the fusing carrier body that is blocked, first of the said fusing carrier body that blocks, hold, also dielectric isolation layer 4 can be set.
In other words, first of the fusing carrier body that is blocked, hold, be provided with dielectric isolation layer, with the head end of guaranteeing said ground connection connecting elements and the dielectric voltage withstand effect between the fuse mains side grafting termination.
Further, described dielectric isolation layer is the electro-insulating rubber layer.
Further, the head end of the said fusing carrier body that blocks, and the distance between the fuse mains side grafting termination are greater than the corresponding safe distance of fuse place power-supply system electric pressure.
EC-10 type insulator seal closed form expulsion fuse is a kind of newly developed; Be applicable to the high voltage short circuit protective device of the pole type transformer below the 400KVA; Its concrete structure and operation principle; Can application reference number be 200810040902.2, name is called disclosed related content in the Chinese utility application of " insulating enclosed type pagoda-shaped fuse ", no longer narrates at this.
When carrying out the ground connection operation, according to the operational procedure of Utilities Electric Co., operation is divided into the following step:
1, draws back fuse;
2, in the electrical verification of power failure side;
3, be sidelong in power failure;
4, at power failure side hanging earthing conductor.
Can know from above-mentioned steps, at first will draw back fuse, and EC-10 type insulator seal closed form expulsion fuse is behind " drawing back " (be actually and pull out) fuse, its fusing carrier is to separate with host machine part partly, and host machine part is to be in " interior not vacant " state.
EC-10 type insulator seal closed form expulsion fuse is made up of host machine part, fusing carrier part and installation gold utensil.Because host machine part and gold utensil partly are fixtures, fusing carrier partly is movable separator.
And host machine part is owing to consider factors such as its insulating properties and resistance to pressure, and inconvenience is reequiped; And gold utensil partly just is used for fixing the structural member of EC-10 type insulator seal closed form expulsion fuse, and the ground device that is difficult to technically achieve a butt joint improves, so mobilizable fusing carrier has partly been carried out technological transformation, has formed the method for operation of present technique scheme.
Because the utility model is to the special construction of insulator seal closed form expulsion fuse, at the end of fusing carrier body ground connection is set and connects lead, the ground connection of being served as enclosed type expulsion fuse device by the waste and old fusing carrier body that blocks connects stalk; It is with strong points, and is easy to implement, is convenient to operation; Can avoid the inconvenience of existing operation tool or method of operation; Help under the prerequisite that guarantees safety and ground connection effect, to simplify field operation program and step, improve work on the spot efficient.Under the prerequisite of enclosed type expulsion fuse device main body structure not being changed, realized the reliable ground of enclosed type expulsion fuse load side.
The proposition of present technique scheme; Be present situation and the concrete operations environment of execute-in-place workman,, pool our ideas and make concerted efforts in conjunction with the requirement of its actual operating experience and safety operation according to power equipment; Carry out " technological transformation " movable achievement; The promotion and application of this technical scheme, for execute-in-place and safe power supply, significant.
The utility model can be widely used in the safety operation apparatus field of the power circuit that adopts the enclosed type expulsion fuse.
Claims (4)
1. a device that guarantees enclosed type expulsion fuse reliable ground under inspecting state comprises the common ground line, it is characterized in that:
Described device comprises three fusing carrier bodys that block, the copper conductor and the common ground line that are connected with fusing carrier body that each blocks;
Wherein, described copper conductor is connected with the end of the fusing carrier body load side of blocking;
The copper conductor of the said fusing carrier body that each blocks is connected with the common ground line.
2. according to the device of the described assurance enclosed type of claim 1 expulsion fuse reliable ground under inspecting state, it is characterized in that first of the said fusing carrier body that blocks, holding, dielectric isolation layer is set.
3. according to the device of the described assurance enclosed type of claim 2 expulsion fuse reliable ground under inspecting state, it is characterized in that described dielectric isolation layer is the electro-insulating rubber layer.
4. according to the device of the described assurance enclosed type of claim 1 expulsion fuse reliable ground under inspecting state; The head end that it is characterized in that the said fusing carrier body that blocks; And the distance between the fuse mains side grafting termination is greater than the corresponding safe distance of fuse place power-supply system electric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120542627 CN202602094U (en) | 2011-12-22 | 2011-12-22 | Apparatus capable of ensuring reliable grounding of enclosed expulsion fuse under maintenance state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120542627 CN202602094U (en) | 2011-12-22 | 2011-12-22 | Apparatus capable of ensuring reliable grounding of enclosed expulsion fuse under maintenance state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202602094U true CN202602094U (en) | 2012-12-12 |
Family
ID=47319611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120542627 Expired - Fee Related CN202602094U (en) | 2011-12-22 | 2011-12-22 | Apparatus capable of ensuring reliable grounding of enclosed expulsion fuse under maintenance state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202602094U (en) |
-
2011
- 2011-12-22 CN CN 201120542627 patent/CN202602094U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20121212 Termination date: 20191222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |