CN202084497U - Wiring terminal of dropout fuse - Google Patents
Wiring terminal of dropout fuse Download PDFInfo
- Publication number
- CN202084497U CN202084497U CN2011201464857U CN201120146485U CN202084497U CN 202084497 U CN202084497 U CN 202084497U CN 2011201464857 U CN2011201464857 U CN 2011201464857U CN 201120146485 U CN201120146485 U CN 201120146485U CN 202084497 U CN202084497 U CN 202084497U
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- wiring
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- patch bay
- screw
- bottom plate
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Abstract
The utility model provides a wiring terminal of a dropout fuse, which is applied to the technical field of high-voltage power transmission and mainly consists of a wiring bottom plate, a wire pressing plate, nuts and screws, wherein two fixing holes are symmetrically arranged at one end of the rectangular wiring bottom plate; a wire guiding groove is arranged on the upper plane at the other end of the wiring bottom plate along a centerline of the wiring bottom plate, and is semicircular; 2-4 screw holes are uniformly arranged at two sides of the wire guiding groove respectively, and the screws are respectively arranged in the screw holes; through holes are arranged at two ends of the wire pressing plate, the screws penetrate through the through holes of the wire pressing plate, and the wire pressing plate is fixed on the upper plane of the wiring bottom plate and arranged at the upper part of the wire guiding groove; the nuts are fixedly arranged on the screws respectively; and the wire pressing plate can be used for firmly pressing a lead wire in the wire guiding groove. The wiring terminal has the following effects that: as the wiring plate adopts an equipment clamp type integrated structure, and thermal tin-plating process is adopted, electrochemical corrosion of copper and aluminum can be avoided, and the wiring plate can be directly connected with an aluminum lead wire in the construction process; moreover, the contact resistance is reduced, and the operation reliability is improved.
Description
Technical field
The utility model relates to the high voltage power transmission technical field, the particularly fuse of using on 6～10kV electric pressure overhead transmission line, a kind of fuse switch binding post.
Background technology
At present, fuse switch is the modal a kind of protective switch of the short circuit of distribution line branch line and distribution transformer.Be installed in the distribution line branch, can dwindle the power failure scope.Because of a tangible cut-off point is arranged, had the function of isolating switch, created a safety effect environment for maintenance circuit and equipment, increased maintainer's fail safe.The fuse switch of band pulling load also is furnished with elasticity auxiliary contact and arc-extinguish chamber, in order to a deciliter rated load electric current.
Fuse switch is made up of insulating support and cartridge fuse two large divisions, and fixed contact is installed in the two ends of insulating support, and moving contact is installed in the two ends of cartridge fuse, and cartridge fuse is made up of the expulsion tube and the outer epoxy glass tube of internal layer.The pulling load fuse switch increases elasticity auxiliary head and arc-extinguish chamber, in order to minute, close load current.Fuse switch is when normal operation, and cartridge fuse forms make position after by the fuse tensioning.When system broke down, fault current made the fuse quick-break, and formed electric arc, and expulsion tube is subjected to electric arc scorching hot, decomposites a large amount of gas, made and formed very high pressure in the pipe, and form vertical blowing along pipeline, and electric arc is elongated rapidly and extinguishes.Behind the fuse failure, the bottom moving contact lose tension force and under turn over, retaining mechanism discharges cartridge fuse, cartridge fuse falls, and forms significantly to cut-off the position.When needs are wanted pulling load, draw back moving contact with insulating bar, this moment, the main dynamic and static contact that helps still contacted, continuation spurs contact with insulating bar, and auxiliary contact also separates, and produces electric arc between auxiliary contact, electric arc is elongated in the arc-extinguish chamber slit, arc-extinguish chamber produces gas simultaneously, when current over-zero, with arc extinction.
RW7-10 and the operating defective of RW11-10 series fuse switch: the fuse switch binding post is copper material, upper and lower lead-in wire is the aluminum material, because the chemical property difference of two kinds of metals of copper aluminium, electrochemical corrosion takes place easily in the contact position, with the passing of time can cause loose contact, conduction rate variance or joint breaking, therefore, copper-aluminium transition equipment cable clamp or copper-aluminium transition line nose are all used in the connection between fuse switch binding post and the aluminum conductor.Be in operation and have following defective:
The first, to cross device clamp or copper-aluminium transition line nose very strict to the technological parameter requirement during fabrication for copper aluminium, there is potential destabilizing factor in product quality, the quality that copper and aluminium welding connects the interface is subjected to such environmental effects such as high temperature, vibrations fatigue, corrosion easily, and mechanical strength is reduced.The interface that copper and aluminium welding connects its to connect area little, can be considered " line contact ", its connection interface resistance is big, temperature rise is big, the thermal coefficient of expansion difference of copper, aluminium in addition objectively can worsen the stress condition of interface.Because of copper aluminium crosses device clamp or copper-aluminium transition line nose existence defective in essence, in the strong wind area, phenomenon of rupture is very general, and especially phenomenon of rupture often takes place the above for many years power circuit of operation.
The second, connect by copper-aluminium transition equipment cable clamp or copper-aluminium transition line nose between isolating switch terminal block and the aluminum conductor, increased a contact-making surface, contact resistance increases, and line loss increases, and wastes energy;
When three, passing through copper-aluminium transition equipment cable clamp or the connection of copper-aluminium transition line nose between fuse switch binding post and the aluminum conductor, need bolted, long-play, fastening bolt fluffs easily, make device clamp and the loose contact of fuse switch binding post, fuse switch is burnt in serious heating.
Four, when drawing back, closing fuse switch with insulating bar, because of effect of inertia, insulator teetertotters, and insulator is easily in fixedly yoke plate anchor ear place fracture.
The utility model content
The purpose of this utility model is: a kind of fuse switch binding post is provided, mainly solve copper aluminium that existing fuse switch is connected and cross the problem that device clamp or copper-aluminium transition line nose easily rupture between frequent strong wind area is prone to binding post and upper and lower lead-in wire, improve efficiency of construction, improve the circuit operational reliability.
The technical solution adopted in the utility model is: the fuse switch binding post, mainly form by patch bay, tension disc, nut and screw, and it is characterized in that: the end at rectangular patch bay is symmetrically distributed with two fixing holes; A plane and metallic channel is arranged on the other end of patch bay along the patch bay center line, metallic channel is a semi-circular recesses; Be evenly distributed with 2～4 screw holes respectively in the both sides of metallic channel, screw is arranged respectively in screw hole; There is through hole at the tension disc two ends, and screw passes the through hole of tension disc, and tension disc is fixed on the last plane of patch bay, and tension disc is on the top of metallic channel; On screw, be fixed with nut respectively; Tension disc can be the lead compacting in metallic channel.
In order to adapt to the needs of installation, described patch bay has two kinds of structures, first kind of structure: patch bay is dull and stereotyped; Second kind of structure: patch bay therefrom part is two sections, the last plane of one section of two fixing hole is arranged and have between the last plane of one section of metallic channel angle 140～160 spend between.
Patch bay and tension disc adopt temperature tin to handle, and can avoid the electrochemical corrosion between copper aluminium, can be directly in work progress and the aluminum conductor connection.No longer need copper-aluminium transition equipment cable clamp or copper-aluminium transition line nose, avoided the power outage that causes because of the fracture of copper-aluminium transition equipment cable clamp or copper-aluminium transition line nose.With the fixing yoke plate of hood type, change the casting type yoke plate into simultaneously, fixedly yoke plate casts in insulator inside, can avoid causing insulator to rupture at yoke plate anchor ear place because of frequent operation.
The beneficial effects of the utility model: the utility model fuse switch binding post, terminal block adopts device clamp formula integral structure, adopt hot tinning to handle simultaneously, can avoid the electrochemical corrosion of copper aluminium, in work progress, can directly be connected with aluminum conductor; Reduced by a joint face, reduced contact resistance, reduced the circuit heating, saves energy has reduced by a risk point, has improved operational reliability.No longer need copper-aluminium transition equipment cable clamp or copper-aluminium transition line nose, avoided the power outage that causes because of the fracture of copper-aluminium transition equipment cable clamp or copper-aluminium transition line nose.Fuse switch fixedly yoke plate adopts the casting type design, can prevent because of rocking that the operation fuse produces, and causes insulator in fixedly yoke plate anchor ear place fracture.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model fuse switch binding post.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 1.
Fig. 4 is the another kind of structural representation of the utility model fuse switch binding post.
Fig. 5 is the vertical view of Fig. 4.
Among the figure, 1-patch bay, 2-fixing hole, 3-tension disc, 4-nut, 5-screw, 6-metallic channel.
Embodiment
Embodiment 1: with a fuse switch binding post is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model fuse switch binding post mainly is made up of patch bay 1, tension disc 3, nut 4 and screw 5.Patch bay 1 is an one flat plate, 180 millimeters of the length of patch bay 1, and 55 millimeters of width, thickness are 3 millimeters.Consult Fig. 2.Being symmetrically distributed with two diameters at an end of rectangular patch bay 1 is 8 millimeters fixing hole 2.A plane and metallic channel 6 is arranged on the other end of patch bay 1 along patch bay 1 center line.Consult Fig. 3.Metallic channel 6 is 5 millimeters semi-circular recesses for radius; Consult Fig. 2.70 millimeters of the length of metallic channel 6.Be evenly distributed with two screw holes respectively in the both sides of metallic channel 6, a screw 5 is arranged respectively in screw hole.3 millimeters of tension disc 3 thickness, 55 millimeters of length, 20 millimeters of width.There is through hole at tension disc 3 two ends, and screw 5 passes the through hole of tension disc 3, and tension disc 3 is fixed on the last plane of patch bay 1, and tension disc 3 is on the top of metallic channel 6.On each screw 5, be fixed with a nut 4 respectively; Tension disc 3 can be the end compacting of lead in metallic channel 6.
Embodiment 2: consult Fig. 4 and Fig. 5.Substantially the same manner as Example 1, difference be patch bay 1 therefrom part be two sections, the last plane of 2 one sections of two fixing holes being arranged and angle between the last plane of 6 one sections of metallic channels is arranged is 150 to spend.
Claims (3)
1. a fuse switch binding post mainly is made up of patch bay (1), tension disc (3), nut (4) and screw (5), it is characterized in that: the end at rectangular patch bay (1) is symmetrically distributed with two fixing holes (2); On the last plane of the other end of patch bay (1) and along patch bay (1) center line a metallic channel (6) is arranged, metallic channel (6) is a semi-circular recesses; Be evenly distributed with 2～4 screw holes respectively in the both sides of metallic channel (6), screw (5) is arranged respectively in screw hole; There is through hole at tension disc (3) two ends, and screw (5) passes the through hole of tension disc (3), and tension disc (3) is fixed on the last plane of patch bay (1), and tension disc (3) is on the top of metallic channel (6); On screw (5), be fixed with nut (4) respectively; Tension disc (3) can be the lead compacting in metallic channel (6).
2. fuse switch binding post according to claim 1 is characterized in that: described patch bay (1) is for dull and stereotyped.
3. fuse switch binding post according to claim 1, it is characterized in that: described patch bay (1) therefrom part is two sections, the last plane of (2) one sections of two fixing holes is arranged and have between the last plane of (6) one sections of metallic channels angle 140～160 spend between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201464857U CN202084497U (en) | 2011-05-10 | 2011-05-10 | Wiring terminal of dropout fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201464857U CN202084497U (en) | 2011-05-10 | 2011-05-10 | Wiring terminal of dropout fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202084497U true CN202084497U (en) | 2011-12-21 |
Family
ID=45345119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201464857U Expired - Lifetime CN202084497U (en) | 2011-05-10 | 2011-05-10 | Wiring terminal of dropout fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202084497U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969207A (en) * | 2012-11-28 | 2013-03-13 | 绍兴电力局 | OSM-type circuit breaker contact fitting |
| CN104347332A (en) * | 2014-11-12 | 2015-02-11 | 成都峰达科技有限公司 | Mounting error prevention circuit breaker structure |
| CN105336554A (en) * | 2015-10-28 | 2016-02-17 | 国家电网公司 | Electrochemical corrosion-resistant fuse |
| CN111554552A (en) * | 2020-05-20 | 2020-08-18 | 贵州电网有限责任公司 | Drop-out fuse with incoming and outgoing wire clamps |
| CN112447466A (en) * | 2020-11-20 | 2021-03-05 | 贵州电网有限责任公司 | Novel wiring device of drop-out fuse |
-
2011
- 2011-05-10 CN CN2011201464857U patent/CN202084497U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969207A (en) * | 2012-11-28 | 2013-03-13 | 绍兴电力局 | OSM-type circuit breaker contact fitting |
| CN104347332A (en) * | 2014-11-12 | 2015-02-11 | 成都峰达科技有限公司 | Mounting error prevention circuit breaker structure |
| CN105336554A (en) * | 2015-10-28 | 2016-02-17 | 国家电网公司 | Electrochemical corrosion-resistant fuse |
| CN111554552A (en) * | 2020-05-20 | 2020-08-18 | 贵州电网有限责任公司 | Drop-out fuse with incoming and outgoing wire clamps |
| CN112447466A (en) * | 2020-11-20 | 2021-03-05 | 贵州电网有限责任公司 | Novel wiring device of drop-out fuse |
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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 |
Granted publication date: 20111221 |
|
| CX01 | Expiry of patent term |