CN201117606Y - High-voltage drop-off fuse - Google Patents
High-voltage drop-off fuse Download PDFInfo
- Publication number
- CN201117606Y CN201117606Y CNU200720092578XU CN200720092578U CN201117606Y CN 201117606 Y CN201117606 Y CN 201117606Y CN U200720092578X U CNU200720092578X U CN U200720092578XU CN 200720092578 U CN200720092578 U CN 200720092578U CN 201117606 Y CN201117606 Y CN 201117606Y
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- fuse
- contact
- shell fragment
- voltage drop
- flip piece
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Abstract
A high-voltage dropout fuse relates to the electric equipment. The middle part of an insulator is provided with a mounting bracket; the upper part and the lower part are provided with an upper static contact and a lower static contact; the upper part and the lower part of a fuse tube are provided with an upper active contact and a lower active contact; the upper static contact is provided with a limit plate and the limit plate is matched with a positioning plate on the upper active contact; the lower active contact is arranged on a rotary component and the rotary component is controlled by a fettering device. Wherein: the lower part of a fixing device for the lower active contact of the fuse tube is connected with the rotary component through a shaft A, the front lower part of the rotary component is provided with a rotating shaft B and the front upper part of the rotary component is provided with an arc plate. The rear of the rotary component is provided with a warping rod, a rear beam with stirrer is placed at the rear of the warping rod and in the hole of the lower part of the lower active contact fixing device, and the fuse is connected to press a front beam with a stirrer. The high-voltage dropout fuse provided by the utility model has the following advantages: 1. delicate design, high pressure between contacts and small tension of the fuse; 2. rapid dropout and good arc extinction; 3. accurate positioning and good state of contact surface; 4. labor and material saving without meaningless fuse consumption, convenient and rapid installation.
Description
Technical field:
The utility model relates to power equipment, further is high voltage drop-out type fuse cutout.
Background technology:
The outdoor drop-out type fuse is applicable to and exchanges 50HZ, makes transmission line and short-circuit of power transformer and overload protection in the electric power system of rated voltage 10kV.At present, in the high-pressure side of the outdoor type voltage transformer of small distribution transformer and 35kV transformer station, what generally use is high voltage drop-out type fuse cutout.At the transformer of low capacity (20～50kVA), generally select the high voltage fuse (voltage transformer use be 0.5A) of 1～5A for use.But, can't bear the mechanical force when closing the high pressure drop out fuse and disconnect because of its mechanical strength is little; In actual mechanical process, generally to carry out the repeated multiple times operation, be difficult to successfully close drop out fuse.At present, be contained in the fuse switch pipe as the fuse that will select low capacity for use and use, really play protective effect, have only fuse switch lower contact spring leaf is tied up extremely with iron wire miniature transformer (instrument transformer).But tie up extremely with iron wire, when distribution transformer (voltage transformer) hinders in the cartridge fuse fuse failure for some reason, drop out fuse can't fall, the electric arc that produces during fuse failure can't extinguish immediately, because the effect of electric arc, cause fuse switch cartridge fuse and transformer to burn out situation and happen occasionally, even burnt out the magnet of drop out fuse; If because of mechanical strength has been selected the large size fuse inadequately, the distribution transforming (voltage transformer) of low capacity is not had protective effect at all.In sum, above-mentioned fault and artificial wrongly or helpless tie up dead its basic reason and be drop out fuse design defectiveness takes place.
Desirable drop out fuse should have following characteristics:
1, less in load capacity, the thin and tension intensity of fuse hour must not make and break insurance fuse when closing cartridge fuse.
2, when load was big, the contact head of upper and lower side can not generate heat, and certain load capacity be arranged.
3, when breaking down fuse failure, the cartridge fuse assembly can eject down a section multiply that links to each other with fuse fast and be connected copper cash, and cartridge fuse can fall rapidly simultaneously, and can reliable extinguish arcs.
The cartridge fuse assembly of seting out smoothly when 4, changing fuse.
5, when closing cartridge fuse, be highly susceptible to operation.
6, the device that can regulate the fuse degree of tightness is arranged, contact is good, solid and reliable when closing cartridge fuse with assurance.
Summary of the invention:
The purpose of this utility model is to provide a kind of high voltage drop-out type fuse cutout, and it is fitting operation easily, when closing cartridge fuse the contact good, solid and reliable, behind fuse failure, fall down automatically, repeatable operation is easy damaged fuse and contact head not.
The purpose of this utility model realizes by following scheme: high voltage drop-out type fuse cutout, and the insulator middle part is provided with mounting bracket, and the upper and lower part is provided with upper and lower fixed contact respectively, and cartridge fuse is interior blank pipe, and the upper and lower part is provided with upper and lower moving contact respectively; It is characterized in that: upper static contact is provided with banking stop, matches with spacer on being located at moving contact, and lower moving contact is arranged on the flip piece, and flip piece is by the control of yoke device.
The utility model can further be realized by following scheme: the structure of flip piece is: the preceding bottom of flip piece is provided with rotating shaft B, front upper part is provided with the arc plate, flip piece is by the bottom of the lower moving contact fixture of axle A connection cartridge fuse, and an axle A is located at flip piece 1/4-1/6 place.
The structure of flip piece yoke device is: the flip piece rear portion is provided with sticks up bar, is placed with in the hole of sticking up bar rear portion, lower moving contact fixture bottom and mixes the son axle, and the fuse link bottom is fixedly connected on the screw of flip piece front portion by mixing the front rail of son.
Upper static contact is that horizontal is pressed shell fragment A, and the front portion is provided with " V-type " foldable structure; Following fixed contact is for pressing shell fragment B, and in the stationary contact headstock, following stationary contact headstock is provided with " J font " hook under being fixed in, and the preceding bottom rotating shaft of flip piece B places down in " J font " hook of stationary contact headstock; Last moving contact is a top contact blade, and when closing fuse, top contact blade is pressed shell fragment A to compress downwards and relative fixed; Lower moving contact is the arc plate, and when closing fuse, the pressure shell fragment B in arc plate and the following stationary contact headstock contacts and pressed shell fragment B to compress.
Banking stop is flat on the upper forepart of pressing shell fragment, and the banking stop front portion is overlooked and is " V-shape " opening, and the rear portion is long and narrow parallel shape opening; The perpendicular last rear portion that places top contact blade of spacer.
The utility model operation principle: when cartridge fuse closed, fuse was fixed between lower moving contact by fuse link, under the cooperation of banking stop and spacer, pressed shell fragment A, pressed shell fragment B to push down top contact blade and arc plate respectively; When fuse was fused, fuse link disconnected, and caused mixing the son exoneration; Under the effect of lever, mix son and on the one hand the hypomere fuse link is extracted rapidly from cartridge fuse, will stick up bar on the other hand and discharge, cartridge fuse falls under the effect of gravity, device for ejecting (press shell fragment A and press shell fragment B), flip piece rotates around axle A and axle B, thereby causes cartridge fuse to drop down.
The utlity model has following advantage: 1, deft design.Because this product takes the upset (or rotate) of bottom movable contact to be mixed son control, little several times so both can add the pressure between big contact when making the pressure of upper and lower fixed contact affact fuse, can not elongate, break fuse again.2, fall rapidly, arc quenching effect is good.It is bigger than other products ejection amplitudes of market to eject fuse equipment fast, thereby gap in arcing chamber is strengthened, and is beneficial to arc extinguishing.3, accurate positioning.The design of the centering on top has formed and has added anterior three direction positioning actions about accurate, has guaranteed that the contact-making surface of contact is in state preferably.4, labor and material saving.Use this technology can avoid the unnecessary consumption of fuse and cartridge fuse, and, convenient and swift when fuse is installed, reduced electrician's labour intensity.
Description of drawings:
Fig. 1 faces structural representation for the utility model,
Fig. 2 is the utility model schematic side view of bowing,
Fig. 3 is the utility model cartridge fuse structural representation,
Fig. 4 is the utility model connection status schematic diagram,
Fig. 5 begins to fall view for the utility model.
Embodiment:
Below in conjunction with embodiment, the utility model is done further narration.
Embodiment 1: as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, insulator (1) middle part is provided with mounting bracket (2), is used for fixing insulator; The top of insulator is provided with upper static contact fixture (3), and the bottom is provided with down fixed contact fixture (4), and upper and lower fixture is respectively applied for fixing upper and lower fixed contact; Upper and lower fixture comprises plain cushion, shroud ring, cross-arm and screw; Upper static contact is one to press shell fragment A (5), presses shell fragment A generally to adopt the phosphor-copper material, also can adopt conduct electricity very well, other material of good springiness; Pressing shell fragment A to extend upward part (or connecting plate is set separately) can be connected with high-tension bus-bar by screw; Pressing shell fragment A is horizontal, and the front portion is provided with " V-type " foldable structure, and being increases elasticity, can be on the top of pressing shell fragment A (also can in the bottom) supplementary plate (6) is set, also can be directly with the double-deck shell fragment of pressing, it is copper that the double-deck pressure shell fragment that contacts with moving contact when pressing shell fragment is set.
Press the upper forepart of shell fragment A to be provided with banking stop (7), the banking stop horizontal, the front portion is overlooked and is " V-shape " opening, and the rear portion is long and narrow parallel shape opening.
Following fixture is provided with down stationary contact headstock (8), its overall shape is as cancellation front and following sylphon (can be described as scaffolding structure), method by hollow out on the wall of the left and right sides is provided with " J font " hook (8-1) (referring to Fig. 2), following stationary contact headstock inside is provided with down fixed contact, following fixed contact is a pressure shell fragment B (9), presses the downward extension of shell fragment B to be connected with high-tension bus-bar by screw.
Cartridge fuse (10) is interior blank pipe, and top is fixed with moving contact by last moving contact fixture (11), and the bottom is fixed with lower moving contact by lower moving contact fixture (12); Upper and lower moving contact fixture all can be designed to the two halves fastening structure, tightens up by screw, also can be designed to integrative-structure; Last moving contact is a top contact blade (13) (the also available horizontal bar of sheet substitutes, and promptly top contact blade substitutes for contacting bar, contacts bar and can be shapes such as circle, ellipse), and when closing this fuse, top contact blade is pressed shell fragment A to compress downwards and relative fixed; The rear portion is provided with spacer (14) (the also available bar of sheet substitutes on top contact blade, be that spacer is that backstay substitutes), when closing this fuse, because the existence of banking stop, spacer is directed and does not limit and can vacillate now to the left, now to the right, while is may command top contact blade front-back direction also, thereby top contact blade is contacted with pressing shell fragment A.Therefore, close tight cartridge fuse after, on the one hand, press shell fragment A to rely on snap lock to press closer contact and cartridge fuse, guarantee that top contact blade well contacts with pressure shell fragment A; On the other hand, press shell fragment A that top contact blade is produced certain pressure downwards, thereby help the downward ejection of cartridge fuse behind fuse failure.
Hanging hole (15) is used for operating by peg the cartridge fuse assembly of this fuse.
In the utility model, spacer and banking stop can exchange, and promptly banking stop is arranged on the moving contact, and spacer is arranged on the upper static contact.
The bottom of cartridge fuse connects a flip piece (17) by axle A (16), axle A is located at flip piece 1/4-1/6 place, flip piece can rotate around axle A, the preceding bottom of flip piece is provided with rotating shaft B (18), rotating shaft B can place down in stationary contact headstock " J font " hook, and rotates in hook, and the flip piece front upper part is provided with arc plate (19), the arc plate is lower moving contact, and the pressure shell fragment B in arc plate and the following stationary contact headstock contacts and pressed shell fragment B to compress; Therefore, close tight cartridge fuse after, press shell fragment B that the arc plate is produced certain pressure downwards, on the one hand, can guarantee that the arc plate contacts well with pressure shell fragment B, on the other hand, helps the upset of flip piece behind fuse failure.
The flip piece rear portion is provided with sticks up bar (20), sticking up bar is horizontal horizontal, what the merging that matches with it limited its activity is to mix son (21), mixing son can be made up of two cross bars and two vertical poles, can be set to " II font " or " U font " or " hollow ", also available similar plate replaces, and is placed with to mix son axle (promptly mixing the rear transverse rod of son) in the hole of sticking up bar rear portion, lower moving contact fixture bottom, makes that mixing son can rotate around rear transverse rod; For guaranteeing to mix the action effect of son, can the location-plate that the bottom has axis hole be set at the rear portion of lower moving contact fixture, place in the axis hole and mix the son axle, location-plate can move fixing by screw and lower moving contact fixture, like this, can carry out suitable position adjustments as required; Fuse link (22) places in the cartridge fuse, fuse by its middle part of series connection is divided into two sections, the upper end of cartridge fuse is fixed in the upper end of fuse link, and moving contact is gone up in connection, the bottom of fuse link is fixedly connected on the screw of flip piece front portion by the front rail of mixing son, and is communicated with lower moving contact.Mix the front rail of son and bottled up, stick up bar thereby the vertical pole of mixing son has been stumbled, and then the flip piece front portion is opened downwards by fuse link tension force.The design of mixing son in the utility model has effectively utilized lever principle, is the center to stick up bar promptly, and it is longer that the rear portion is compared in the front portion of mixing sub-vertical pole, thereby the pulling force that fuse link bears is less, not easy damaged fuse link and fuse.
Connecting hole (23) (referring to Fig. 3) is used for upwards hanging by peg the operation of cartridge fuse assembly.
The utility model can be provided with spring mixing on the son axle, fuse link is disconnected after, mix son under the effect of spring, upspring rapidly.Spring also can be arranged at other position of mixing son as required.
When cartridge fuse closed, fuse was fixed between lower moving contact by fuse link, under the cooperation of banking stop and spacer, pressed shell fragment A, pressed shell fragment B to push down top contact blade and arc plate respectively; When fuse was fused, fuse link disconnected, and caused mixing the son exoneration; Under the effect of lever, mix son and on the one hand the hypomere fuse link is extracted rapidly from cartridge fuse, will stick up bar on the other hand and discharge, cartridge fuse falls under the effect of gravity, device for ejecting (press shell fragment A and press shell fragment B), flip piece rotates around axle A and axle B, thereby causes cartridge fuse to drop down.
Need to prove, in the present embodiment, during narration, fixed contact, moving contact position in opposite directions all is called the front portion.
Claims (10)
1, high voltage drop-out type fuse cutout, the insulator middle part is provided with mounting bracket, and the upper and lower part is provided with upper and lower fixed contact respectively, and cartridge fuse is interior blank pipe, and the upper and lower part is provided with upper and lower moving contact respectively; It is characterized in that: upper static contact is provided with banking stop, matches with spacer on being located at moving contact, and lower moving contact is arranged on the flip piece, and flip piece is by the control of yoke device.
2, high voltage drop-out type fuse cutout according to claim 1, it is characterized in that: the structure of flip piece is: the preceding bottom of flip piece is provided with rotating shaft B, front upper part is provided with the arc plate, and flip piece is by the bottom of the lower moving contact fixture of axle A connection cartridge fuse, and an axle A is located at flip piece 1/4-1/6 place.
3, high voltage drop-out type fuse cutout according to claim 1, it is characterized in that: the structure of flip piece yoke device is: the flip piece rear portion is provided with sticks up bar, in the hole of sticking up bar rear portion, lower moving contact fixture bottom, be placed with and mix the son axle, the fuse link bottom is fixedly connected on the screw of flip piece front portion by mixing the front rail of son.
4, high voltage drop-out type fuse cutout according to claim 1 is characterized in that: upper static contact is that horizontal is pressed shell fragment A, and the front portion is provided with " V-type " foldable structure; Following fixed contact is for pressing shell fragment B, and in the stationary contact headstock, following stationary contact headstock is provided with " J font " hook under being fixed in, and the preceding bottom rotating shaft of flip piece B places down in " J font " hook of stationary contact headstock; Last moving contact is a top contact blade, and when closing fuse, top contact blade is pressed shell fragment A to compress downwards and relative fixed; Lower moving contact is the arc plate, and when closing fuse, the pressure shell fragment B in arc plate and the following stationary contact headstock contacts and pressed shell fragment B to compress.
5, high voltage drop-out type fuse cutout according to claim 3 is characterized in that: mix the son axle and be provided with spring.
6, high voltage drop-out type fuse cutout according to claim 3 is characterized in that: at the rear portion of lower moving contact fixture the location-plate that the bottom has axis hole is set, places in the axis hole and mix the son axle, location-plate moves fixing by screw and lower moving contact fixture.
7, high voltage drop-out type fuse cutout according to claim 4 is characterized in that: in the top or the bottom of pressing shell fragment A supplementary plate is set.
8, high voltage drop-out type fuse cutout according to claim 4 is characterized in that: banking stop is flat on the upper forepart of pressing shell fragment, and the banking stop front portion is overlooked and is " V-shape " opening, and the rear portion is long and narrow parallel shape opening; The perpendicular last rear portion that places top contact blade of spacer.
9, high voltage drop-out type fuse cutout according to claim 7 is characterized in that: press shell fragment A and supplementary plate to replace with the double-deck shell fragment of pressing.
10, high voltage drop-out type fuse cutout according to claim 8 is characterized in that: top contact blade substitutes with contacting bar, and spacer substitutes with backstay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720092578XU CN201117606Y (en) | 2007-10-28 | 2007-10-28 | High-voltage drop-off fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720092578XU CN201117606Y (en) | 2007-10-28 | 2007-10-28 | High-voltage drop-off fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201117606Y true CN201117606Y (en) | 2008-09-17 |
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ID=39992187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720092578XU Expired - Fee Related CN201117606Y (en) | 2007-10-28 | 2007-10-28 | High-voltage drop-off fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201117606Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005351A (en) * | 2010-12-11 | 2011-04-06 | 河南省电力公司南阳供电公司 | Drop-out fuse |
| CN102110554A (en) * | 2010-09-03 | 2011-06-29 | 何排枝 | Protective device for high-voltage power equipment |
| CN103077843A (en) * | 2011-10-26 | 2013-05-01 | 苏州闪联高压电器有限公司 | Outdoor alternating current high-voltage isolation switch |
| CN103280386A (en) * | 2013-05-20 | 2013-09-04 | 山东电力集团公司枣庄供电公司 | Composite cross arm drop-out fuse |
| CN103545157A (en) * | 2013-10-08 | 2014-01-29 | 袁昌辉 | Double-breaking high-voltage switch capable of secondarily tensioning fuse wire |
| CN110379689A (en) * | 2019-06-18 | 2019-10-25 | 浙江伏尔特电器有限公司 | Fuse switch |
| CN112735929A (en) * | 2021-01-27 | 2021-04-30 | 史振军 | High-voltage fuse for oil field power transmission and transformation |
-
2007
- 2007-10-28 CN CNU200720092578XU patent/CN201117606Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110554A (en) * | 2010-09-03 | 2011-06-29 | 何排枝 | Protective device for high-voltage power equipment |
| CN102110554B (en) * | 2010-09-03 | 2014-01-08 | 何排枝 | Protective device for high-voltage power equipment |
| CN102005351A (en) * | 2010-12-11 | 2011-04-06 | 河南省电力公司南阳供电公司 | Drop-out fuse |
| CN102005351B (en) * | 2010-12-11 | 2016-06-08 | 国网河南省电力公司南阳供电公司 | Fuse switch |
| CN103077843A (en) * | 2011-10-26 | 2013-05-01 | 苏州闪联高压电器有限公司 | Outdoor alternating current high-voltage isolation switch |
| CN103280386A (en) * | 2013-05-20 | 2013-09-04 | 山东电力集团公司枣庄供电公司 | Composite cross arm drop-out fuse |
| CN103545157A (en) * | 2013-10-08 | 2014-01-29 | 袁昌辉 | Double-breaking high-voltage switch capable of secondarily tensioning fuse wire |
| CN110379689A (en) * | 2019-06-18 | 2019-10-25 | 浙江伏尔特电器有限公司 | Fuse switch |
| CN110379689B (en) * | 2019-06-18 | 2021-06-11 | 浙江伏尔特电器有限公司 | Drop-out fuse |
| CN112735929A (en) * | 2021-01-27 | 2021-04-30 | 史振军 | High-voltage fuse for oil field power transmission and transformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20101028 |