CN205028877U - Short circuit and overload duplicate protection fuse - Google Patents
Short circuit and overload duplicate protection fuse Download PDFInfo
- Publication number
- CN205028877U CN205028877U CN201520802938.5U CN201520802938U CN205028877U CN 205028877 U CN205028877 U CN 205028877U CN 201520802938 U CN201520802938 U CN 201520802938U CN 205028877 U CN205028877 U CN 205028877U
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- fuse
- pipe cap
- melt
- circuit
- overload
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Abstract
The utility model provides a short circuit and overload duplicate protection fuse, including fuse tube, pipe cap, female row, fuse -element, fuse piece, a pipe cap is respectively installed at the both ends of fuse tube, the pipe cap middle position is equipped with the through -hole, the fuse -element is arranged in the inside of fuse tube, the both ends of fuse -element are respectively with two two are connected to the one end of fuse piece the other end of fuse piece passes the through -hole of pipe cap, the fuse -element is the wave, the other end of fuse piece is installed female arranging. The fuse -element adopts the wave, and its drift that has increased the fuse -element has strengthened the resistant electric arc ability of fuse -element to will be in the past the 31.5KA of the breaking current of fuse -element brought up to 50KA, make this fuse can be when the circuit transships open circuit, also can be when the circuit short circuit open circuit, avoided repeated installation, reduced its installation cost.
Description
Technical field
The utility model relates to electric field, is specifically related to a kind of short circuit and overload duplicate protection fuse.
Background technology
Fuse is proterctive equipment common in supply line, and its operation principle is that after exceeding according to electric current value one break time set in advance, the heat produced with himself makes melt fuse, thus circuit is disconnected; Fuse is widely used in high and low voltage electric distribution system and control system and power consumption equipment, as the protector of line short and overload, applies very extensive.Fuse is generally by melt, and the part such as fuse tube, packing material forms.During use; fuse is series in protected circuit; when there is the situation of overload or short circuit in protected circuit; electric current in circuit can become large; when the value of this electric current exceedes the safe current of setting; the heat fusing melt produced by melt self, makes circuit disconnect, thus plays the effect of protection.Fuse is generally divided into overload protection fuse and short-circuit protection fuse according to purposes, is applied to overload protection and the short-circuit protection of circuit respectively.
Fuse of the prior art generally can only be applied to separately overload protection or the short-circuit protection of circuit, and therefore, need to install overload protection fuse and short-circuit protection fuse in the circuit of protection, use inconvenience, installation cost is high simultaneously.
Summary of the invention
Utility model object: in order to more than customer service not enough; the purpose of this utility model is to provide a kind of short circuit and overload duplicate protection fuse; only need install a fuse just can play overload protection and short-circuit protection to circuit simultaneously in realization; avoid needing repeatedly to install, the problem that use cost is high in the past.
For achieving the above object, the utility model adopts following technical scheme: a kind of short circuit and overload duplicate protection fuse, comprise fuse tube, pipe cap, busbar, melt, fuse piece; The two ends of described fuse tube are respectively provided with a described pipe cap, described pipe cap middle position is provided with through hole, described melt is placed in the inside of described fuse tube, the two ends of described melt are connected with one end of two described fuse pieces respectively, the other end of two described fuse pieces passes the through hole of described pipe cap, described melt is waveform, and the other end of described fuse piece is provided with described busbar.Motor protection high-voltage and current-limitation circuit breaker described in the utility model, adopts busbar formula to install, and does not need to increase mounting seat, makes easier for installation, and saved cost; Simultaneously; described melt adopts waveform; which increase the drift of melt; enhance the resistance to electric arc ability of melt; and the 31.5KA of the breaking current of melt is in the past brought up to 50KA, make this fuse can when circuit overloads open circuit, also can when short circuit open circuit; realize overload protection and short-circuit protection, well solve and repeat to install the high problem of the use cost that causes.
Further, between the two ends of described fuse tube and described pipe cap, be also provided with packing ring, described packing ring is provided with through hole.The use of packing ring makes pipe cap to the better tightness of fuse tube, effectively prevents the filler in fuse tube from revealing.
Further, the two ends of described melt removably connect with one end of two described fuse pieces respectively.When disconnecting when described melt is in circuit overloads or short circuit, the melt of damage directly can be pulled down replacing, fuse can be reused, reduce use cost.
Further, also comprise filler, described filler is filled between fuse tube and packing ring.The filling of filler in fuse, enhances the arc extinguishing ability of fuse.
Further, described filler is quartz sand.Quartz sand has higher thermal conductivity and insulation property, and has very large contact area with electric arc, is convenient to absorb arc energy, and electric arc therefore can be made to cool rapidly.
Technique scheme can be found out, the utility model has following beneficial effect: motor protection high-voltage and current-limitation circuit breaker described in the utility model, adopts busbar formula to install, and does not need to increase mounting seat, makes easier for installation, and saved cost; Described melt adopts waveform, because this increasing the drift of melt, enhance the resistance to electric arc ability of melt, and the 31.5KA of the breaking current of melt is in the past brought up to 50KA, make this fuse can when circuit overloads open circuit, also can when short circuit open circuit, avoid and repeat to install the high problem of the use cost that causes.
According to hereafter by reference to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present utility model more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present utility model with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference numeral identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is the structural representation according to the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further.
Short circuit as described in Figure 1 and overload duplicate protection fuse, comprise fuse tube 1, pipe cap 2, busbar 3, melt 4, fuse piece 5; The two ends of described fuse tube 1 are respectively provided with a described pipe cap 2, described pipe cap 2 middle position is provided with through hole, described melt 4 is placed in the inside of described fuse tube 1, one end of the two ends of described melt 4 fuse piece 5 described with two respectively is connected, the other end of two described fuse pieces 5 passes the through hole of described pipe cap 2, described melt 1 is waveform, and the other end of described fuse piece is provided with described busbar 3.Described fuse tube 1 can be made up of any insulating material, such as glass or pottery etc., and can have suitable shape, such as cylindrical shape or rectangular shape.For removably connecting between described pipe cap 2 and described fuse tube 1, such as can for being threaded, buckle connection, pinned connection etc.It is inner that described melt 4 is suspended in described fuse tube 1 by described fuse piece 5 and the connection of described pipe cap 2, can not contact with the inwall of described fuse tube 1.Described melt 4 adopts waveform, adds the drift of melt 4, enhances the resistance to electric arc ability of melt 4, by busbar 3 conducting wire.And the 31.5KA of the breaking current of melt is in the past brought up to 50KA, make this fuse can when circuit overloads open circuit, also can when short circuit open circuit, avoid and repeat to install the high problem of the use cost that causes.
In an embodiment of the present utility model, between the two ends and described pipe cap 2 of described fuse tube 1, be also provided with packing ring 7, described packing ring 7 is provided with through hole.Described packing ring 7 adopts non-combustible material, and the through-hole diameter on the through hole of described packing ring 7 and described pipe cap 2 is in the same size, and the width of described fuse piece 5 is slightly less than or equals the diameter of through hole of described packing ring 7 and described pipe cap 2.
In an embodiment of the present utility model, one end of described fuse piece 5 removably connects with two respectively at the two ends of described melt 4.Described connected mode can adopt screw or pinned connection, when disconnecting when described melt 4 is in circuit overloads or short circuit, the melt 4 of damage directly can be pulled down replacing, fuse can be reused.
In an embodiment of the present utility model, also comprise filler 6, described filler 6 is filled between described fuse tube 1 and described packing ring 7.
In an embodiment of the present utility model, described filler 6 is quartz sand.Quartz sand has higher thermal conductivity and insulation property, and has very large contact area with electric arc, is convenient to absorb arc energy, and electric arc can be made to cool rapidly.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (5)
1. a short circuit and overload duplicate protection fuse, it is characterized in that, comprise: fuse tube (1), pipe cap (2), busbar (3), melt (4) and fuse piece (5), the two ends of described fuse tube (1) are respectively provided with a pipe cap (2), described pipe cap (2) middle position is provided with through hole, described melt (4) is placed in the inside of fuse tube (1), the two ends of described melt (4) are connected with one end of two described fuse pieces (5) respectively, the other end of two described fuse pieces (5) passes the through hole of described pipe cap (2), described melt (4) is waveform, the breaking current of described melt (4) is 50KA, the other end of described fuse piece (5) is provided with described busbar (3).
2. short circuit according to claim 1 and overload duplicate protection fuse, it is characterized in that, between described fuse tube (1) and described pipe cap (2), be provided with packing ring (7), (7) are provided with through hole to described packing ring.
3. short circuit according to claim 2 and overload duplicate protection fuse, it is characterized in that, the two ends of described melt (4) removably connect with one end of two described fuse pieces (5) respectively.
4. the short circuit according to any one of claim 1-3 and overload duplicate protection fuse, it is characterized in that, also comprise filler (6), described filler (6) is filled between fuse tube (1) and packing ring (7).
5. short circuit according to claim 4 and overload duplicate protection fuse, it is characterized in that, described filler (7) is quartz sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520802938.5U CN205028877U (en) | 2015-10-19 | 2015-10-19 | Short circuit and overload duplicate protection fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520802938.5U CN205028877U (en) | 2015-10-19 | 2015-10-19 | Short circuit and overload duplicate protection fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028877U true CN205028877U (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520802938.5U Active CN205028877U (en) | 2015-10-19 | 2015-10-19 | Short circuit and overload duplicate protection fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205028877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420676A (en) * | 2020-11-14 | 2021-02-26 | 陕西航空电气有限责任公司 | Rotary rectifier diode with short-circuit protection function for aero-generator |
-
2015
- 2015-10-19 CN CN201520802938.5U patent/CN205028877U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420676A (en) * | 2020-11-14 | 2021-02-26 | 陕西航空电气有限责任公司 | Rotary rectifier diode with short-circuit protection function for aero-generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |