CN204537977U - A kind of simple and easy load cut-off device for PRW type fuse switch - Google Patents
A kind of simple and easy load cut-off device for PRW type fuse switch Download PDFInfo
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- CN204537977U CN204537977U CN201520258903.XU CN201520258903U CN204537977U CN 204537977 U CN204537977 U CN 204537977U CN 201520258903 U CN201520258903 U CN 201520258903U CN 204537977 U CN204537977 U CN 204537977U
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- bourdon tube
- seat
- expulsion
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Abstract
The utility model discloses 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, described bourdon tube and expulsion tube are all connected across between described upper junction plate and lower connecting plate; 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 correspondingly around seat; Described lead fuse wire interts in described expulsion tube.Simple and easy load cut-off device of the present utility model, cut-offs the load through fuse switch for on-load, and 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.
Description
Technical field
The utility model 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.
Utility model content
The purpose of this utility model is the defect overcoming prior art, a kind of simple and easy load cut-off device for PRW type fuse switch is provided, is 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.
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 utility model, 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 utility model;
Fig. 2 is the using state figure of the simple and easy load cut-off device for PRW type fuse switch of the present utility model;
Fig. 3 is the end view of Fig. 2.
Embodiment
In order to make those skilled in the art can understand the technical solution of the utility model better, below in conjunction with accompanying drawing, its embodiment is described in detail:
Refer to Fig. 1, most preferred embodiment of the present utility model, 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 utility model, 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 utility model, lead fuse wire upper, lower end is taken 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 made to hook on the ground connection stalk 202 of fuse 20 times pile crowns, simple and easy load cut-off device of the present utility model 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 utility model, 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 utility model, complete operation.
Simple and easy load cut-off device for PRW type fuse switch of the present utility model 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 utility model, 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 utility model is described, and be not used as restriction of the present utility model, as long as in spirit of the present utility model, all will drop in Claims scope of the present utility model 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 |
|---|---|---|---|
| CN201520258903.XU CN204537977U (en) | 2015-04-24 | 2015-04-24 | A kind of simple and easy load cut-off device for PRW type fuse switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258903.XU CN204537977U (en) | 2015-04-24 | 2015-04-24 | A kind of simple and easy load cut-off device for PRW type fuse switch |
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| Publication Number | Publication Date |
|---|---|
| CN204537977U true CN204537977U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520258903.XU Active CN204537977U (en) | 2015-04-24 | 2015-04-24 | A kind of simple and easy load cut-off device for PRW type fuse switch |
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| CN (1) | CN204537977U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752115A (en) * | 2015-04-24 | 2015-07-01 | 国网上海市电力公司 | Simple load disconnector used for PRW drop type fuse |
-
2015
- 2015-04-24 CN CN201520258903.XU patent/CN204537977U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752115A (en) * | 2015-04-24 | 2015-07-01 | 国网上海市电力公司 | Simple load disconnector used for PRW drop type fuse |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |