CN104752115B - Simple load disconnector used for PRW drop type fuse - Google Patents
Simple load disconnector used for PRW drop type fuse Download PDFInfo
- Publication number
- CN104752115B CN104752115B CN201510203648.3A CN201510203648A CN104752115B CN 104752115 B CN104752115 B CN 104752115B CN 201510203648 A CN201510203648 A CN 201510203648A CN 104752115 B CN104752115 B CN 104752115B
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- China
- Prior art keywords
- fuse
- tube
- seat
- bourdon tube
- prw
- 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.)
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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
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 load cut-off device for prw type fuse switch.
Background technology
It is often necessary to cut-off 10 kilovolts of dropping fuses in regular job, wherein cut-off fuse switch by regulation and surpass
The load crossing more than 250kva needs using load cut-off device.
The outdoor power distribution load cut-off instrument that our prw type fuses use at present, this product is quite heavy, and cost is again high,
And need to operate using the insulating bar that spy joins, considerably complicated.
Content of the invention
The purpose of the present invention is the defect overcoming prior art, provides a kind of simple for prw type fuse switch
Load cut-off device, facilitates implementation live power failure operation, will not cause arc short-circuit, does not damage fuse contact, execute-in-place letter
Just safe and reliable.
The technical scheme realizing above-mentioned purpose is: a kind of simple load cut-off device for prw type fuse switch, bag
Include upper junction plate, lower connecting plate, bourdon tube, expulsion tube, copper ring, sleeve, insure around seat, lead under seat, electric fuse on electric fuse
Silk and hook, wherein:
Described bourdon tube and expulsion tube are all connected across between described upper junction plate and lower connecting plate, described bourdon tube and extinguishing arc
Tube side-by-side is arranged, and described bourdon tube is located 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 located at the surface of described bourdon tube；
Described sleeve is arranged on the lower surface of described upper junction plate, and is located at the left side of described bourdon tube；
The upper and lower end of described expulsion tube is arranged on correspondingly around seat under seat and electric fuse on described electric fuse, and
The upper surface of described upper junction plate is fixed on around seat on described electric fuse, under described electric fuse, is fixed on described lower connecting plate around seat
Lower surface；
Described lead fuse wire is interspersed in described expulsion tube, and the upper and lower end of described lead fuse wire is wound around correspondingly
On described electric fuse under seat and electric fuse on seat；
Described hook includes vertical rod, the first hook portion and the second hook portion, and the top of described vertical rod is from the lower end of described bourdon tube
Opening inserts in described bourdon tube, and is connected with the spring in described bourdon tube, and described first hook portion and the second hook portion are right one by one
It is fixed on the left and right side of the bottom of described vertical rod with answering.
A kind of above-mentioned simple load cut-off device for prw type fuse switch, wherein, described lead fuse wire adopts
3a electric current lead fuse wire.
A kind of above-mentioned simple load cut-off device for prw type fuse switch, wherein, described expulsion tube and spring
Pipe is made by insulant；The material of described sleeve is copper；The material of described hook is steel；Around seat and guarantor on described electric fuse
Under dangerous silk, the material around seat is copper.
A kind of above-mentioned simple load cut-off device for prw type fuse switch, wherein, the bottom of described first hook portion
End is higher than the top of described second hook portion.
The simple load cut-off device for prw type fuse switch of the present invention, beneficial effect compared with prior art
Fruit is: fused using lead fuse wire, upper and lower aerofluxuss arc blow-out, safe and reliable, light cheap it is only necessary to using original insulation operation
Rod can be operated, and cut-offs the load through fuse switch for on-load, facilitates implementation live power failure operation, will not
Cause arc short-circuit, do not damage fuse contact, execute-in-place handy and safe is reliable.
Brief description
Fig. 1 is the structure chart of the simple load cut-off device for prw type fuse switch of the present invention；
Fig. 2 is the use state figure of the simple load cut-off device for prw type fuse switch of the present invention；
Fig. 3 is the side view of Fig. 2.
Specific embodiment
In order that those skilled in the art are better understood when technical scheme, right below in conjunction with the accompanying drawings
Its specific embodiment is described in detail:
Refer to Fig. 1, highly preferred embodiment of the present invention, a kind of simple load for prw type fuse switch cut-offs
Device, including on upper junction plate 1, lower connecting plate 2, bourdon tube 3, expulsion tube 4, copper ring 5, sleeve 6, electric fuse under seat 7, electric 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 side by side
Setting, and bourdon tube 3 is 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 located at bourdon tube
3 surface；Sleeve 6 is arranged on the lower surface of upper junction plate 1, and is located at the left side of bourdon tube 3；Around seat 7 and guarantor on electric fuse
It is arranged on the upper and lower end of expulsion tube 4 under dangerous silk around seat 8 correspondingly, and be fixed on upper junction plate 1 around seat 7 on electric fuse
Upper surface, is fixed on the lower surface of lower connecting plate 2 around seat 8 under electric fuse；Lead fuse wire is interspersed in expulsion tube 4, and lead insurance
The upper and lower end of silk is wrapped on electric fuse under seat 7 and electric fuse correspondingly on seat 8；Hook 9 include vertical rod 91, the
One hook portion 92 and the second hook portion 93, the top of vertical rod 91 in the lower ending opening insertion bourdon tube 3 of bourdon tube 3, and with bourdon tube 3
Interior spring is connected, and the 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 first
The bottom of 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 insulant；The material of sleeve 6
Matter is copper；The material of hook 9 is steel；It is copper around the material of seat 8 under seat 7 and electric fuse on electric fuse.
Refer to Fig. 2 and Fig. 3, the simple load cut-off device of the present invention again, operation principle is:
(1) mount:
Put on lead fuse wire in the expulsion tube 4 of the simple load cut-off device of the present invention, the upper and lower end of lead fuse wire is one by one
Accordingly take up on seat 8 under seat 7 and electric fuse on electric fuse, then hook copper ring 5 using insulated operating rod, make sleeve
It is enclosed within the ram's horn 201 outside pile crown on prw type fuse switch 20, then hooks hook 9 with insulated operating rod, pull
The spring in bourdon tube 3 being connected with hook 9, makes hook 9 hook on the ground connection stalk 202 of 20 times pile crowns of fuse, the present invention's
Simple load cut-off device and fuse switch 20 form parallel connection.
(2) pull open:
Then directly pull open prw type fuse switch with insulated operating rod, electric current cut-offs from the simple load of the present invention
In the expulsion tube 4 of device, lead fuse wire flows through, and because electric current is much larger than 3a, so fusing lead fuse wire, produces under arcing
Gas, strong arc blow-out, extinguish electric arc in expulsion tube in current zero-crossing point, and be exhausted by expulsion tube 4 upper and lower ends, peace
The full on-load that completes cut-offs fuse switch.
(3) take:
Finally take the simple load cut-off device of the present invention, complete to operate.
The simple load cut-off device for prw type fuse switch of the present invention has some superiority following:
(1) develop difficulty little；
(2) cost economic is cheap big；
(3) operate with simplicity；
(4) scope of application is also than wide: all can use on all prw type fuse switches.
In sum, the simple load cut-off device of the present invention, is fused using lead fuse wire, and upper and lower aerofluxuss arc blow-out safely may be used
Lean on, light cheap it is only necessary to can be operated using original insulated operating rod, cut-off for on-load and melt through drop type
The load of disconnected device, facilitates implementation live power failure operation, will not cause arc short-circuit, does not damage fuse contact, execute-in-place letter
Just safe and reliable.
Those of ordinary skill in the art it should be appreciated that above embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, the change as long as in the spirit of the present invention, to embodiment described above
Change, modification all will fall in the range of claims of the present invention.
Claims (4)
1. a kind of simple load cut-off device for prw type fuse switch is it is characterised in that include upper junction plate, lower company
Around seat, lead fuse wire and hook under seat, electric fuse on fishplate bar, bourdon tube, expulsion tube, copper ring, sleeve, electric 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 simultaneously
Row's setting, and described bourdon tube is 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 located at the surface of described bourdon tube；
Described sleeve is arranged on the lower surface of described upper junction plate, and is located at the left side of described bourdon tube；
The upper and lower end of described expulsion tube is arranged on correspondingly around seat under seat and electric fuse on described electric fuse, and described
The upper surface of described upper junction plate is fixed on around seat on electric fuse, is fixed under described lower connecting plate around seat under described electric fuse
Surface；
Described lead fuse wire is interspersed in described expulsion tube, and the upper and lower end of described lead fuse wire is wrapped in institute correspondingly
State on electric fuse under seat and electric fuse on seat；
Described hook includes vertical rod, the first hook portion and the second hook portion, and the top of described vertical rod is from the lower ending opening of described bourdon tube
Insert in described bourdon tube, and be connected with the spring in described bourdon tube, described first hook portion and the second hook portion are correspondingly
It is fixed on the left and right side of the bottom of described vertical rod.
2. a kind of simple load cut-off device for prw type fuse switch according to claim 1, its feature exists
In described lead fuse wire adopts 3a electric current lead fuse wire.
3. a kind of simple load cut-off device for prw type fuse switch according to claim 1, its feature exists
Make by insulant in, described expulsion tube and bourdon tube；The material of described sleeve is copper；The material of described hook is steel；
On described electric fuse, under seat and electric fuse, the material around seat is copper.
4. a kind of simple load cut-off device for prw type fuse switch according to claim 1, its feature exists
In 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 CN104752115A (en) | 2015-07-01 |
| CN104752115B true CN104752115B (en) | 2017-01-25 |
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Family Applications (1)
| 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 |
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| Country | Link |
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| CN (1) | CN104752115B (en) |
Families Citing this family (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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5650602A (en) * | 1995-06-07 | 1997-07-22 | 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 |
| CN102360998B (en) * | 2011-11-03 | 2012-10-31 | 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 |
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2015
- 2015-04-24 CN CN201510203648.3A patent/CN104752115B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104752115A (en) | 2015-07-01 |
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