CN104752115A - Simple load disconnector used for PRW drop type fuse - Google Patents
Simple load disconnector used for PRW drop type fuse Download PDFInfo
- Publication number
- CN104752115A CN104752115A CN201510203648.3A CN201510203648A CN104752115A CN 104752115 A CN104752115 A CN 104752115A CN 201510203648 A CN201510203648 A CN 201510203648A CN 104752115 A CN104752115 A CN 104752115A
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- China
- Prior art keywords
- fuse
- tube
- seat
- bourdon tube
- prw
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
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- Fuses (AREA)
Abstract
The invention discloses a simple load disconnector used for a PRW drop type fuse. The simple load disconnector comprises an upper connecting plate, a lower connecting plate, a spring tube, an arc extinction tube, a copper ring, a sleeve, a fuse upward winding seat, a fuse downward winding seat, a lead fuse and a hook, wherein the spring tube and the arc extinction tube are bridged between the upper connecting plate and the lower connecting plate; the copper ring is arranged in the middle of the upper surface of the upper connecting plate and is located above the spring tube; the sleeve is arranged on the lower surface of the lower connecting plate and is located at the left side of the spring tube; the fuse upward winding seat and the fuse downward winding seat are arranged on the upper end and the lower end of the arc extinction tube in a one-to-one mode; the lead fuse penetrates through and is inserted in the arc extinction tube. The simple load disconnector is used for disconnecting a load which passes the drop type fuse in an on-load mode, the field power failure operation is facilitated, no arc light short circuit is caused, a contact of the fuse cannot be damaged, and the field operation is simple, convenient, safe and reliable.
Description
Technical field
The present invention relates to a kind of simple and easy load cut-off device for PRW type fuse switch.
Background technology
In regular job, often need to cut-off 10 kilovolts of dropping fuses, wherein cut-offfing fuse switch by regulation needs applied load cut-off device more than the load of more than 250KVA.
The outdoor power distribution load cut-off instrument of our PRW type fuse use at present, this product is quite heavy, and cost is high again, and needs to use special insulating rod operation of joining, quite complexity.
Summary of the invention
The object of the invention is the defect overcoming prior art, provide a kind of simple and easy load cut-off device for PRW type fuse switch, be convenient to realize on-the-spot power failure operation, can not cause arc short-circuit, not damage fuse contact, execute-in-place handy and safe is reliable.
The technical scheme realizing above-mentioned purpose is: a kind of simple and easy load cut-off device for PRW type fuse switch, to comprise on upper junction plate, lower connecting plate, bourdon tube, expulsion tube, copper ring, sleeve, fuse around seat, lead fuse wire and hook under seat, fuse, wherein:
Described bourdon tube and expulsion tube are all connected across between described upper junction plate and lower connecting plate, and described bourdon tube and expulsion tube are arranged side by side, and described bourdon tube is positioned on the left of described expulsion tube;
Described copper ring is arranged on the middle part of the upper surface of described upper junction plate, and is positioned at directly over described bourdon tube;
Described sleeve is arranged on the lower surface of described upper junction plate, and is positioned at the left side of described bourdon tube;
Described fuse is arranged under seat and fuse the upper and lower end of described expulsion tube around seat correspondingly, and described fuse is fixed on the upper surface of described upper junction plate around seat, under described fuse, be fixed on the lower surface of described lower connecting plate around seat;
Described lead fuse wire interts in described expulsion tube, and the upper and lower end of described lead fuse wire to be wrapped on described fuse under seat and fuse correspondingly on seat;
Described hook comprises vertical rod, the first hook portion and the second hook portion, the top of described vertical rod is inserted in described bourdon tube from the lower ending opening of described bourdon tube, and be connected with the spring in described bourdon tube, described first hook portion and the second hook portion are fixed on the left and right side of the bottom of described vertical rod correspondingly.
Above-mentioned a kind of simple and easy load cut-off device for PRW type fuse switch, wherein, described lead fuse wire adopts 3A electric current lead fuse wire.
Above-mentioned a kind of simple and easy load cut-off device for PRW type fuse switch, wherein, described expulsion tube and bourdon tube are made by insulating material; The material of described sleeve is copper; The material of described hook is steel; Material around seat under seat and fuse on described fuse is copper.
Above-mentioned a kind of simple and easy load cut-off device for PRW type fuse switch, wherein, the bottom of described first hook portion is higher than the top of described second hook portion.
Simple and easy load cut-off device for PRW type fuse switch of the present invention, beneficial effect is compared with prior art: use lead fuse wire fusing, be vented arc blow-out up and down, safe and reliable, light cheapness, only need to use original insulated operating rod to operate, cut-off the load through fuse switch for on-load, be convenient to realize on-the-spot power failure operation, can not arc short-circuit be caused, do not damage fuse contact, execute-in-place handy and safe is reliable.
Accompanying drawing explanation
Fig. 1 is the structure chart of the simple and easy load cut-off device for PRW type fuse switch of the present invention;
Fig. 2 is the using state figure of the simple and easy load cut-off device for PRW type fuse switch of the present invention;
Fig. 3 is the end view of Fig. 2.
Embodiment
In order to make those skilled in the art can understand technical scheme of the present invention better, below in conjunction with accompanying drawing, its embodiment is described in detail:
Refer to Fig. 1, most preferred embodiment of the present invention, for a simple and easy load cut-off device for PRW type fuse switch, to comprise on upper junction plate 1, lower connecting plate 2, bourdon tube 3, expulsion tube 4, copper ring 5, sleeve 6, fuse under seat 7, fuse around seat 8, lead fuse wire and hook 9.
Bourdon tube 3 and expulsion tube 4 are all connected across between upper junction plate 1 and lower connecting plate 2, and bourdon tube 3 and expulsion tube 4 are arranged side by side, and bourdon tube 3 is positioned on the left of expulsion tube 4; Copper ring 5 is arranged on the middle part of the upper surface of upper junction plate 1, and is positioned at directly over bourdon tube 3; Sleeve 6 is arranged on the lower surface of upper junction plate 1, and is positioned at the left side of bourdon tube 3; Fuse is arranged under seat 7 and fuse the upper and lower end of expulsion tube 4 around seat 8 correspondingly, and fuse is fixed on the upper surface of upper junction plate 1 around seat 7, under fuse, be fixed on the lower surface of lower connecting plate 2 around seat 8; Lead fuse wire interts in expulsion tube 4, and the upper and lower end of lead fuse wire to be wrapped on fuse under seat 7 and fuse correspondingly on seat 8; Hook 9 comprises vertical rod 91, first hook portion 92 and the second hook portion 93, the top of vertical rod 91 is inserted in bourdon tube 3 from the lower ending opening of bourdon tube 3, and be connected with the spring in bourdon tube 3, first hook portion 92 and the second hook portion 93 are fixed on the left and right side of the bottom of vertical rod 91 correspondingly, and the bottom of the first hook portion 92 is higher than the top of the second hook portion 93.
Lead fuse wire adopts 3A electric current lead fuse wire.Expulsion tube 4 and bourdon tube 3 are made by insulating material; The material of sleeve 6 is copper; The material of hook 9 is steel; Fuse is copper around the material of seat 8 under seat 7 and fuse.
Refer to Fig. 2 and Fig. 3 again, simple and easy load cut-off device of the present invention, operation principle is:
(1) mount:
Lead fuse wire is put in the expulsion tube 4 of simple and easy load cut-off device of the present invention, the upper and lower end of lead fuse wire takes up correspondingly on fuse under seat 7 and fuse on seat 8, then insulated operating rod is used to hook copper ring 5, make on the ram's horn 201 of jacket casing on PRW type fuse switch 20 outside pile crown, then hook 9 is hooked with insulated operating rod, pull and the spring linked up with in 9 bourdon tubes be connected 3, hook 9 is hooked on the ground connection stalk 202 of fuse 20 times pile crowns, and simple and easy load cut-off device of the present invention and fuse switch 20 form parallel connection.
(2) pull open:
Then direct insulated operating rod pulls open PRW type fuse switch, electric current flows through from lead fuse wire in the expulsion tube 4 of simple and easy load cut-off device of the present invention, because electric current is much larger than 3A, so fusing lead fuse wire, under arcing, produce gas, strong arc blow-out, extinguish electric arc in expulsion tube when current zero-crossing point, and be exhausted by expulsion tube about 4 two ends, the on-load that completes of safety cut-offs fuse switch.
(3) take:
Finally take simple and easy load cut-off device of the present invention, complete operation.
Simple and easy load cut-off device for PRW type fuse switch of the present invention has some superiority following:
(1) difficulty is developed little;
(2) cost economic is greatly cheap;
(3) operate easy to use;
(4) scope of application is also more extensive: all PRW type fuse switches all can use.
In sum, simple and easy load cut-off device of the present invention, uses lead fuse wire fusing, is vented arc blow-out up and down, safe and reliable, light cheapness, only needs to use original insulated operating rod to operate, cut-offs the load through fuse switch for on-load, be convenient to realize on-the-spot power failure operation, can not cause arc short-circuit, not damage fuse contact, execute-in-place handy and safe is reliable.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the present invention is described, and be not used as limitation of the invention, as long as in spirit of the present invention, all will drop in Claims scope of the present invention the change of the above embodiment, modification.
Claims (4)
1. for a simple and easy load cut-off device for PRW type fuse switch, it is characterized in that, to comprise on upper junction plate, lower connecting plate, bourdon tube, expulsion tube, copper ring, sleeve, fuse around seat, lead fuse wire and hook under seat, fuse, wherein:
Described bourdon tube and expulsion tube are all connected across between described upper junction plate and lower connecting plate, and described bourdon tube and expulsion tube are arranged side by side, and described bourdon tube is positioned on the left of described expulsion tube;
Described copper ring is arranged on the middle part of the upper surface of described upper junction plate, and is positioned at directly over described bourdon tube;
Described sleeve is arranged on the lower surface of described upper junction plate, and is positioned at the left side of described bourdon tube;
Described fuse is arranged under seat and fuse the upper and lower end of described expulsion tube around seat correspondingly, and described fuse is fixed on the upper surface of described upper junction plate around seat, under described fuse, be fixed on the lower surface of described lower connecting plate around seat;
Described lead fuse wire interts in described expulsion tube, and the upper and lower end of described lead fuse wire to be wrapped on described fuse under seat and fuse correspondingly on seat;
Described hook comprises vertical rod, the first hook portion and the second hook portion, the top of described vertical rod is inserted in described bourdon tube from the lower ending opening of described bourdon tube, and be connected with the spring in described bourdon tube, described first hook portion and the second hook portion are fixed on the left and right side of the bottom of described vertical rod correspondingly.
2. a kind of simple and easy load cut-off device for PRW type fuse switch according to claim 1, is characterized in that, described lead fuse wire adopts 3A electric current lead fuse wire.
3. a kind of simple and easy load cut-off device for PRW type fuse switch according to claim 1, it is characterized in that, described expulsion tube and bourdon tube are made by insulating material; The material of described sleeve is copper; The material of described hook is steel; Material around seat under seat and fuse on described fuse is copper.
4. a kind of simple and easy load cut-off device for PRW type fuse switch according to claim 1, is characterized in that, the bottom of described first hook portion is higher than the top of described second hook portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510203648.3A CN104752115B (en) | 2015-04-24 | 2015-04-24 | Simple load disconnector used for PRW drop type fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510203648.3A CN104752115B (en) | 2015-04-24 | 2015-04-24 | Simple load disconnector used for PRW drop type fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104752115A true CN104752115A (en) | 2015-07-01 |
| CN104752115B CN104752115B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510203648.3A Active CN104752115B (en) | 2015-04-24 | 2015-04-24 | Simple load disconnector used for PRW drop type fuse |
Country Status (1)
| Country | Link |
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| CN (1) | CN104752115B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783456A (en) * | 2016-12-15 | 2017-05-31 | 国网上海市电力公司 | A kind of interim processing unit of fuse switch failure |
| CN109192633A (en) * | 2018-11-12 | 2019-01-11 | 国网山西省电力公司临汾供电公司 | A kind of quick short-circuit tool for fuse switch |
| CN113782402A (en) * | 2021-07-31 | 2021-12-10 | 国网辽宁省电力有限公司电力科学研究院 | Drop-out fuse with load current cutting function and mounting method |
Citations (9)
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|---|---|---|---|---|
| RU2094888C1 (en) * | 1995-09-15 | 1997-10-27 | Акционерное общество открытого типа "ЭЛВО" | Fuse-disconnector |
| US5861595A (en) * | 1995-06-07 | 1999-01-19 | Utility Solutions, Inc. | Circuit interrupting apparatus and method for high current power lines |
| CN2456308Y (en) * | 2000-12-29 | 2001-10-24 | 陈显志 | Wireless remote controlled and manual controlled fallen fuse |
| CN2694467Y (en) * | 2004-05-13 | 2005-04-20 | 长沙铁路总公司株洲水电段 | Outdoors duplex melting tube high-tension drop type fuse |
| CN201242988Y (en) * | 2008-06-10 | 2009-05-20 | 中国电力科学研究院 | High-voltage fuse |
| CN102360998A (en) * | 2011-11-03 | 2012-02-22 | 余谋幸 | Semi-automatic three-phase synchronous drop-out fuse |
| CN202564164U (en) * | 2012-05-17 | 2012-11-28 | 山东电力集团公司枣庄供电公司 | Drop-type fuse emergency fuse tube |
| CN203631463U (en) * | 2013-12-03 | 2014-06-04 | 国家电网公司 | Automatic continuing-type fuse |
| CN204537977U (en) * | 2015-04-24 | 2015-08-05 | 国网上海市电力公司 | A kind of simple and easy load cut-off device for PRW type fuse switch |
-
2015
- 2015-04-24 CN CN201510203648.3A patent/CN104752115B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5861595A (en) * | 1995-06-07 | 1999-01-19 | Utility Solutions, Inc. | Circuit interrupting apparatus and method for high current power lines |
| RU2094888C1 (en) * | 1995-09-15 | 1997-10-27 | Акционерное общество открытого типа "ЭЛВО" | Fuse-disconnector |
| CN2456308Y (en) * | 2000-12-29 | 2001-10-24 | 陈显志 | Wireless remote controlled and manual controlled fallen fuse |
| CN2694467Y (en) * | 2004-05-13 | 2005-04-20 | 长沙铁路总公司株洲水电段 | Outdoors duplex melting tube high-tension drop type fuse |
| CN201242988Y (en) * | 2008-06-10 | 2009-05-20 | 中国电力科学研究院 | High-voltage fuse |
| CN102360998A (en) * | 2011-11-03 | 2012-02-22 | 余谋幸 | Semi-automatic three-phase synchronous drop-out fuse |
| CN202564164U (en) * | 2012-05-17 | 2012-11-28 | 山东电力集团公司枣庄供电公司 | Drop-type fuse emergency fuse tube |
| CN203631463U (en) * | 2013-12-03 | 2014-06-04 | 国家电网公司 | Automatic continuing-type fuse |
| CN204537977U (en) * | 2015-04-24 | 2015-08-05 | 国网上海市电力公司 | A kind of simple and easy load cut-off device for PRW type fuse switch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783456A (en) * | 2016-12-15 | 2017-05-31 | 国网上海市电力公司 | A kind of interim processing unit of fuse switch failure |
| CN109192633A (en) * | 2018-11-12 | 2019-01-11 | 国网山西省电力公司临汾供电公司 | A kind of quick short-circuit tool for fuse switch |
| CN113782402A (en) * | 2021-07-31 | 2021-12-10 | 国网辽宁省电力有限公司电力科学研究院 | Drop-out fuse with load current cutting function and mounting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104752115B (en) | 2017-01-25 |
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