CN205723403U - A kind of high pressure vacuum formula limiting fuse - Google Patents
A kind of high pressure vacuum formula limiting fuse Download PDFInfo
- Publication number
- CN205723403U CN205723403U CN201620652108.3U CN201620652108U CN205723403U CN 205723403 U CN205723403 U CN 205723403U CN 201620652108 U CN201620652108 U CN 201620652108U CN 205723403 U CN205723403 U CN 205723403U
- Authority
- CN
- China
- Prior art keywords
- melt
- joint
- fuse
- vacuum
- limiting 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
Links
Abstract
This utility model purpose is to provide a kind of high pressure vacuum formula limiting fuse, including vacuum fuse and the limiting fuse that is connected with vacuum fuse, described vacuum fuse includes glass outer, radome, melt, the first melt joint, the second melt joint, input and outfan, it is vacuum chamber in described radome, the outside of radome is observation ward, first melt joint and the second melt joint are separately fixed at the left and right sides of glass outer, the first melt joint and the second melt joint and are outwards connected with the input outside glass outer and outfan respectively；Described limiting fuse includes earthenware, silver melt and seal closure, described seal closure is located at the outside of earthenware, silver melt is located at the inside of earthenware, the left side of silver melt is provided with a peripheral hardware joint, peripheral hardware joint is connected with outfan, the right side of silver melt is fixing seat, and fixing seat is located on the inner tubal wall on the right side of ceramic tube inside.
Description
Technical field
This utility model belongs to fuse technologies field, is specifically related to a kind of high pressure vacuum formula limiting fuse.
Background technology
Fuse is used to protect electrical equipment against overload and the protection electrical equipment of short circuit current infringement, stopped pipe of filleding and endcloseing cartridge fuse-link
Formula fuse is as the fuse of a kind of important kind, and it generally comprises insulation shell, the melt being arranged in insulation shell and
Arc suppression filling, contact base, fusing instruction device, the electrode of melt two ends connection and the end cap at closing melt both ends, melt
Being connected on by protection circuit, work as circuit malfunctions, melt is exothermic melting, and then disconnecting circuit reaches the purpose of protection；With
Time, fusing instruction device action provides the instruction that melt has fused.But, general fuse, is only just meeting after current overload
Cause fusing, cannot realize disconnecting for low-current case.
Utility model content
This utility model purpose is to provide a kind of high pressure vacuum formula limiting fuse, including vacuum fuse and and vacuum
The limiting fuse that fuse connects, described vacuum fuse include glass outer, radome, melt, the first melt joint, the
Two melt joints, input and outfan, be vacuum chamber in described radome, and the outside of radome is observation ward, the first melt
Joint and the second melt joint are separately fixed at the left and right sides of glass outer, and are respectively arranged with an extension by observation ward to vacuum chamber
Section, melt is fixed in vacuum chamber on the extension of the first melt joint and the second melt joint, the first melt joint and second
Melt joint is outwards connected with the input outside glass outer and outfan respectively；
Described limiting fuse includes earthenware, silver melt and seal closure, and described seal closure is located at the outside of earthenware, silver
Melt is located at the inside of earthenware, and the left side of silver melt is provided with a peripheral hardware joint, and peripheral hardware joint is connected with outfan, silver
The right side of melt is fixing seat, and fixing seat is located on the inner tubal wall on the right side of ceramic tube inside.
The left and right sides of described melt is respectively arranged with U-shaped fixing groove, and by this U-shaped fixing groove and the first melt joint
Connect with the second melt joint.
Described U-shaped fixing groove is connected by screw and the first melt joint and the second melt joint.
Described silver melt is filled with quartz sand filler with the gap of earthenware.
Fix with non-conductive fibre cloth between described radome and glass outer.
Described non-conductive fibre cloth can substitute with nylon cloth.
The beneficial effects of the utility model are:
1, using Combined fuse, one vacuum fuse and a limiting fuse, opening of low overcurrent
End scope, is turned off by vacuum fuse, when fault current is bigger, limiting fuse disconnects.
2, its novel structure, dependable performance is stable, noiseless unglazed during drop-out current, safe and reliable to operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
For making technical characteristic of the present utility model, operation principle and beneficial effect it can be readily appreciated that below in conjunction with accompanying drawing and reality
Execute example this utility model is described in further detail, but be not construed as restriction of the present utility model.
With reference to Fig. 1, high pressure vacuum formula limiting fuse, including vacuum fuse and the current limliting that is connected with vacuum fuse
Fuse, is characterized in that, described vacuum fuse includes glass outer 8, radome 10, melt the 1, first melt joint 5, second
Melt joint 2, input 4 and outfan 12, be vacuum chamber 11 in described radome 10, and the outside of radome 10 is observation ward 6,
First melt joint 5 and the second melt joint 2 are separately fixed at the left and right sides of glass outer 8, and by observation ward 6 to vacuum chamber
11 are respectively arranged with an extension, and melt 1 is fixed in vacuum chamber 11 on the extension of the first melt joint 5 and the second melt joint 2, and
One melt joint 5 and the second melt joint 2 are outwards connected with the input 4 outside glass outer 8 and outfan 12 respectively；
Described limiting fuse includes earthenware 15, silver melt 14 and seal closure 16, and described seal closure 16 is located at earthenware
The outside of 15, silver melt 14 is located at the inside of earthenware 15, and the left side of silver melt 14 is provided with a peripheral hardware joint 13, peripheral hardware
Joint 13 is connected with outfan 12, and the right side of silver melt 14 is fixing seat 17, and fixing seat 17 is located at earthenware 15 inner right side
On inner tubal wall.
The left and right sides of described melt 1 is respectively arranged with U-shaped fixing groove, and is connect by this U-shaped fixing groove and the first melt
5 and second melt joint 2 connect.
Described U-shaped fixing groove is connected with the first melt joint 5 and the second melt joint 2 by screw 7.
Described silver melt 14 is filled with quartz sand filler 18 with the gap of earthenware 15.
Fix with non-conductive fibre cloth 9 between described radome 10 and glass outer 8.
Described non-conductive fibre cloth 9 can substitute with nylon cloth.
High pressure vacuum formula limiting fuse in the technical program is actually by vacuum fuse and limiting fuse two
A kind of composition fuse of sections in series composition, in the beginning scope of low overcurrent, is turned off by vacuum fuse, when event
When barrier electric current is bigger, limiting fuse disconnect.With reference to Fig. 1, in vacuum fuse part, the right side of glass outer 8 is provided with one
Individual connection sealing member 3, the sealing in time being connected with limiting fuse.
The shell of vacuum fuse uses glass outer 8, can carry out the damage feelings within observation by glass outer 8
Condition.Instead of the filling of quartz sand with non-conductive fibre cloth 9, decrease the operation of assembling, the vacuum in glass outer 8 should be less than
10-3Pa, radome 10 also makes with glass, and its main purposes is to stop the metal that melt 1 produces during drop-out current
Steam is ejected on stripping shell, and these metallics being deposited in glass shell inner surface easily cause input 4 and output
The conducting of end 12.
Melt 1 uses banded structure, and melt 1 uses radome 10 to fully seal.
Restricted portion is adopted the seal closure 16 being made of resin and is wrapped up earthenware 15, and the silver-plated of internal employing more than 99% melts
Body, quartz sand filler 18 contains the pure quartz grains of sand of more than 98%, the most canned internal to earthenware 15, melts as current limliting
The arc-extinguishing medium of disconnected device.
Its operation principle is: when the vacuum of rated current 50A is broken device drop-out current > 300A time, use limiting fuse to open
End, and the limiting fuse of rated current 50A, when drop-out current < during 200A, uses vacuum fuse to cut-off.
The above, be only preferred embodiment of the present utility model, not impose any restrictions this utility model, every
Any simple modification, change and equivalent structure change above example made according to this utility model technical spirit, the most still
Belong in the protection domain of technical solutions of the utility model.
Claims (6)
1. high pressure vacuum formula limiting fuse, including vacuum fuse and the limiting fuse that is connected with vacuum fuse, its
Feature is, described vacuum fuse include glass outer (8), radome (10), melt (1), the first melt joint (5), second
Melt joint (2), input (4) and outfan (12), be vacuum chamber (11) in described radome (10), outside radome (10)
Ce Shi observation ward (6), the first melt joint (5) and the second melt joint (2) are separately fixed at the left and right two of glass outer (8)
Side, and it is respectively arranged with an extension by observation ward (6) to vacuum chamber (11), in melt (1) is fixed on vacuum chamber (11), the first melt connects
On the extension of head (5) and the second melt joint (2), the first melt joint (5) and the second melt joint (2) outside the most respectively with glass
Input (4) and the outfan (12) in glass outer housing (8) outside connect；
Described limiting fuse includes earthenware (15), silver melt (14) and seal closure (16), and described seal closure (16) is located at pottery
The outside of porcelain tube (15), silver melt (14) is located at the inside of earthenware (15), is provided with outside one in the left side of silver melt (14)
If joint (13), peripheral hardware joint (13) is connected with outfan (12), and the right side of silver melt (14) is fixing seat (17), fixing seat
(17) it is located on the inner tubal wall of earthenware (15) inner right side.
High pressure vacuum formula limiting fuse the most according to claim 1, is characterized in that, the left and right sides of described melt (1)
It is respectively arranged with U-shaped fixing groove, and is connected by this U-shaped fixing groove and the first melt joint (5) and the second melt joint (2).
High pressure vacuum formula limiting fuse the most according to claim 2, is characterized in that, described U-shaped fixing groove passes through screw
(7) it is connected with the first melt joint (5) and the second melt joint (2).
High pressure vacuum formula limiting fuse the most according to claim 1, is characterized in that, described silver melt (14) and earthenware
(15) gap is filled with quartz sand filler (18).
High pressure vacuum formula limiting fuse the most according to claim 1, is characterized in that, outside described radome (10) is with glass
Fix with non-conductive fibre cloth (9) between cover (8).
High pressure vacuum formula limiting fuse the most according to claim 5, is characterized in that, described non-conductive fibre cloth (9) is permissible
Substitute with nylon cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620652108.3U CN205723403U (en) | 2016-06-27 | 2016-06-27 | A kind of high pressure vacuum formula limiting fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620652108.3U CN205723403U (en) | 2016-06-27 | 2016-06-27 | A kind of high pressure vacuum formula limiting fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205723403U true CN205723403U (en) | 2016-11-23 |
Family
ID=57318592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620652108.3U Expired - Fee Related CN205723403U (en) | 2016-06-27 | 2016-06-27 | A kind of high pressure vacuum formula limiting fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205723403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725049A (en) * | 2021-11-02 | 2021-11-30 | 杭州夏树科技有限公司 | Anti-creeping safety device of electric automobile |
-
2016
- 2016-06-27 CN CN201620652108.3U patent/CN205723403U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725049A (en) * | 2021-11-02 | 2021-11-30 | 杭州夏树科技有限公司 | Anti-creeping safety device of electric automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2006063503A1 (en) | Varistor with an alloy-type temperature fuse | |
| CN205723413U (en) | A kind of circuit protection device | |
| CN110021495B (en) | Liquid arc-extinguishing chamber for direct current breaking, direct current breaker and method thereof | |
| JP2013175389A (en) | Connector having overcurrent interrupting function | |
| CN205723403U (en) | A kind of high pressure vacuum formula limiting fuse | |
| KR20150001499A (en) | Circuit breaker of gas insulation switchgear | |
| CN101836340A (en) | Switching device for limiting damage of surge arresters, such as varistors, spark gaps or the like | |
| CN205723414U (en) | A kind of new construction of combined high-voltage vacuum type fuse | |
| CN201773754U (en) | High-capacity vacuum circuit breaker for protecting short-circuit impact generator used in testing station | |
| CN108242374A (en) | A kind of band fixes the combined type DC fuse of fracture | |
| CN204332881U (en) | A kind of self-healing fuse | |
| CN206758394U (en) | A kind of fuse of high pressure high breaking capacity | |
| CN2929951Y (en) | Vacuum overload fuse | |
| CN107170654A (en) | The circuit breaker that a kind of short circuit is quick break | |
| CN207781523U (en) | A kind of melt visual type fuse for high-tension apparatus | |
| CN106655139A (en) | Novel surge protector | |
| CN206040517U (en) | High -voltage circuit -breaker | |
| CN101964245A (en) | Underground totally-sealed combined transformer with lighting protection, overvoltage protection and overcurrent protection | |
| CN204966438U (en) | Drop out fuse carries and melts piece | |
| CN205028881U (en) | U type fuse | |
| CN208189506U (en) | A kind of high voltage fuse | |
| CN204189756U (en) | The single-column all insulation crane that a kind of fail safe is good | |
| CN204189754U (en) | A kind of easy-to-mount single-column all insulation crane | |
| CN104103469B (en) | A kind of single-column all insulation crane | |
| CN103117198A (en) | Device for protecting an electrical circuit fed by an alternating current which can be integrated into a contactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Weiyang District 710018 in Shaanxi Province Economic Development Zone of Xi'an caotan eco industrial park is 4955 Yuan Lu Patentee after: Shaanxi Bohua High and Low Voltage Swith Complete Set Equipment Manufacturing Co., Ltd. Address before: Weiyang District 710000 in Shaanxi Province Economic Development Zone of Xi'an caotan eco industrial park is 4955 Yuan Lu Patentee before: Shaanxi Bohua High and Low Voltage Swith Complete Set Equipment Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20170627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |