CN200965855Y

CN200965855Y - Outdoor AC high voltage jet type fuse

Info

Publication number: CN200965855Y
Application number: CN 200620139626
Authority: CN
Inventors: 林建伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-30
Filing date: 2006-10-30
Publication date: 2007-10-24
Anticipated expiration: 2016-10-30

Abstract

The utility model relates to an outdoor AC high voltage injection fuse set. The top and the bottom of a porcelain insulator are respectively provided with an upper hardware tool and a lower hardware tool. The upper hardware tool is provided with a stationary contact sheet, a copper terminal board, a shield and an iron terminal board. The bottom of the upper hardware tool is provided with a hook. The copper terminal board and the iron terminal board are provided with an upper wire terminal. A spring is arranged between the stationary contact sheet and the right head of the shield which are connected to form a locking device by a rivet. A lower frame, a lower terminal board and a support plate are sequentially arranged below the locking device. The lower terminal board and a support plate are provided with a lower wire terminal. The upper end and lower end of a fuse tube are respectively provided with an upper ring and a lower ring. A base is connected with the lower ring, and a spring board with a small spring is fixed on the base. Fuse with button is arranged in the fuse tube, and end of the button is compressed by releasing cap. The goes through the fuse tube and the spring board and is fixed below the base. The fuse is in a status of tightness. The base is hung in the lower frame, and the upper ring is hung in the hook. The releasing cap below the stationary cap is locked by the locking device. The utility model is characterized in stable performance and long service life.

Description

The outdoor AC high-voltage expulsion fuse

One, technical field

The utility model relates to a kind of outdoor AC high-voltage fuse, refers in particular to a kind of outdoor AC high-voltage expulsion fuse.

Two, background technology

The outdoor AC high-voltage fuse is an outdoor high-voltage protection electrical equipment, and device is on transformer high-voltage side or distribution wire service main road, as short circuit, overload protection and deciliter load current of transformer and circuit.The outdoor AC high-voltage expulsion fuse is made up of insulating support and the molten part two parts that carry, and the main part of insulating support is a porcelain vase, and the molten year main part of part is a cartridge fuse.But, existing most of injecting type (drop type) fuse of China be last century the fifties introduce from the former Soviet Union, its shortcoming is poor performance, unreasonable structure etc., causes fuse not operate on safe ready ground.

Three, utility model content

The purpose of this utility model is to provide a kind of outdoor AC high-voltage expulsion fuse, and it has characteristics such as simple in structure, stable performance, safe and reliable, long service life.

For achieving the above object, the solution that the utility model is taked is: a kind of outdoor AC high-voltage expulsion fuse, it is made up of insulating support and the molten part two parts that carry, the main part of insulating support is a porcelain vase, the molten year main part of part is a cartridge fuse, the fixing respectively up and down gold utensil and the following gold utensil gone up of porcelain vase, fixing static contact successively above the last gold utensil, the copper terminal block, canopy, the iron terminal block, fixed hook below the last gold utensil, fixing upper connecting terminal on copper terminal block and the iron terminal block, put spring between static contact and the canopy right part and connect and compose a locking device by rivet, fixing lower carriage successively below the following gold utensil, following terminal block and supporting bracket, fixing lower connecting terminal on following terminal block and the supporting bracket, fixing respectively ring and the following ring gone up of the upper and lower end parts of cartridge fuse, following seat is connected with following ring, the plate of sending out that has little spring is fixed on down on the seat, the fuse of band button is contained in the cartridge fuse and band button end is compressed by pressure releasing cap, fuse is fixed on down below the seat by a cartridge fuse and a process plate, fuse is in tension, following seat hangs in the lower carriage, last ring leans against in the hook, and pressure releasing cap is locked by locking device below static contact.

Because locking device is set, static contact (upper end contact) contacts more reliable with pressure releasing cap; Because be provided with the plate of sending out of little spring, fuse during the fuse operate as normal, is in tension and self-locking under the effect of sending out plate always.When electric power system was broken down, fault current produced electric arc with the fuse quick-break in cartridge fuse, and cartridge fuse produces a large amount of gases and makes and form very high pressure in the pipe under arcing.What produce when current over-zero goes free gas spout ejection under the cartridge fuse strongly, makes arc extinction thereby rapidly fuse is pulled out.Behind the fuse failure, send out a plate and under the effect of little spring, reset rapidly, following (lower end contact, moving contact) lose tension force and under turn over, cartridge fuse is under the pressure effect of locking device, add the dead weight effect and fall rapidly, form tangible disjunction spacing, circuitry cuts.It has characteristics such as simple in structure, stable performance, safe and reliable, long service life.

Four, description of drawings

Fig. 1 is the structural representation of facing of present embodiment.Fig. 2 is that shell fragment and contact chip are contained in the schematic diagram in the lower carriage.Among the figure: go up gold utensil, 2, left tension disc, 3, right tension disc, 4, the copper terminal block, 5, the iron terminal block, 6, canopy, 7, spring, 8, pressure releasing cap, 9, static contact, 10, hook, 11, go up ring, 12, cartridge fuse, 13, ring down, 14, fuse, 15, send out plate, 16, lower carriage, 17, following, 18, supporting bracket, 19, terminal block down, 20, right crimping plate, 21, left tension disc, 22, gold utensil down, 23, porcelain vase, 24, mounting panel, 25, the noctilucence label, 26, contact chip, 27, shell fragment.

Five, embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Referring to Fig. 1, a kind of outdoor AC high-voltage expulsion fuse, it is made up of insulating support and the molten part two parts that carry, the main part of insulating support is a porcelain vase 23, the molten year main part of part is a cartridge fuse 12, the fixing respectively up and down gold utensil 1 and the following gold utensil 22 gone up of porcelain vase 23, fixing static contact 9 successively above the last gold utensil 1, copper terminal block 4, canopy 6, iron terminal block 5, fixed hook 10 below the last gold utensil 1, fixing upper connecting terminal on copper terminal block 4 and the iron terminal block 5, put spring 7 between static contact 9 and canopy 6 right parts and connect and compose a locking device by rivet, fixing lower carriage 16 successively below the following gold utensil 22, following terminal block 19 and supporting bracket 18, fixing lower connecting terminal on following terminal block 19 and the supporting bracket 18, fixing respectively ring 11 and the following ring 13 gone up of the upper and lower end parts of cartridge fuse 12, following seat 17 is connected with following ring 13, the plate 15 of sending out that has little spring is fixed on down on the seat 17, the fuse 14 of band button is contained in the cartridge fuse 12 and band button end is compressed by pressure releasing cap 8, fuse 14 is fixed on down below the seat 17 by a cartridge fuse 12 and a process plate 15, fuse 14 is in tension, following seat 17 hangs in the lower carriage 16, last ring 11 leans against in the hook 10, and pressure releasing cap 8 is locked by locking device below static contact 9.

Referring to Fig. 2, riveting has shell fragment 27 and contact chip 26 in the described lower carriage 16, and referring to Fig. 1, contact chip 26 contacts (not drawing among Fig. 1) with following 17.Shell fragment 27 and contact chip 26 are set, when the fuse operate as normal (when fuse is in closing position), make down seat 17 contact more reliable with lower carriage 16; After fuse 14 fusing, to send out plate 15 and reset, shell fragment 27 falls cartridge fuse 12 with contact chip 26 following 17 of compressing quickly.They play booster action, have improved security reliability.

Referring to Fig. 1, noctilucence label 25 is posted on described cartridge fuse 12 surfaces, is beneficial to operator's night time operation, alleviates its labour intensity.

Referring to Fig. 1, described upper connecting terminal and lower connecting terminal are the parallel slot connector, and this parallel slot connector is made of

left tension disc

2,21 and right tension disc 3,20.Owing to provided two tension discs, make continue easy.

Referring to Fig. 1, insert mounting panel 24 in the described porcelain vase 23 and fix by cement solidification.

Present embodiment (FSC series) is used for rated voltage 15KV-27KV and exchanges the distribution line of 20Hz and the overload and the short-circuit protection of controller switching equipment; and branch, closing operation have the very high ability of cut-offfing short circuit current to realize power source conversion and insulating power supply under the rated load, can cut-off symmetrical short-circuit electric current 10KA.

Claims

1, a kind of outdoor AC high-voltage expulsion fuse, it is made up of insulating support and the molten part two parts that carry, the main part of insulating support is porcelain vase (23), the molten year main part of part is cartridge fuse (12), it is characterized in that: the fixing respectively up and down gold utensil (1) and the following gold utensil (22) gone up of porcelain vase (23), fixing static contact (9) successively above the last gold utensil (1), copper terminal block (4), canopy (6), iron terminal block (5), fixed hook (10) below the last gold utensil (1), copper terminal block (4) is gone up fixedly upper connecting terminal with iron terminal block (5), put spring (7) and connect and compose a locking device between static contact (9) and canopy (6) right part by rivet, fixing lower carriage (16) successively below the following gold utensil (22), following terminal block (19) and supporting bracket (18), following terminal block (19) is gone up fixedly lower connecting terminal with supporting bracket (18), the upper and lower end parts of cartridge fuse (12) is fixing respectively to be gone up ring (11) and encircles (13) down, following seat (17) is connected with following ring (13), the plate (15) of sending out that has little spring is fixed on down on the seat (17), the fuse (14) of band button is contained in the cartridge fuse (12) and band button end is compressed by pressure releasing cap (8), fuse (14) is fixed on down below the seat (17) by a cartridge fuse (12) and a process plate (15), fuse (14) is in tension, following seat (17) hangs in the lower carriage (16), last ring (11) leans against in the hook (10), and pressure releasing cap (8) is locked by locking device below static contact (9).

2, outdoor AC high-voltage expulsion fuse according to claim 1 is characterized in that: riveting has shell fragment (27) and contact chip (26) in the described lower carriage (16), and contact chip (26) contacts with following (17).

3, outdoor AC high-voltage expulsion fuse according to claim 1 is characterized in that: noctilucence label (25) is posted on described cartridge fuse (12) surface.

4, outdoor AC high-voltage expulsion fuse according to claim 1 is characterized in that: described upper connecting terminal and lower connecting terminal are the parallel slot connector, and this parallel slot connector is made of left tension disc (2,21) and right tension disc (3,20).

5, outdoor AC high-voltage expulsion fuse according to claim 1 is characterized in that: insert mounting panel (24) in the described porcelain vase (23) and fixed by cement solidification.