CN205028815U - A fuse for three -phase circuit protection - Google Patents
A fuse for three -phase circuit protection Download PDFInfo
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- CN205028815U CN205028815U CN201520803372.8U CN201520803372U CN205028815U CN 205028815 U CN205028815 U CN 205028815U CN 201520803372 U CN201520803372 U CN 201520803372U CN 205028815 U CN205028815 U CN 205028815U
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- fuse
- wire
- phase circuit
- circuit protection
- metallic plate
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Abstract
The utility model provides a fuse for three -phase circuit protection, include: fuse tube, pipe cap, female row, fuse piece, wire, additional resistance, metal sheet, hood, card pad, spring and wire, arbitrary end of additional resistance with the one end of wire is connected, the card fills up and arranges in the hood bottom, the metal sheet is arranged in the opening part of hood, the spring is arranged in the card fill up with between the metal sheet, the other end of wire passes the metal sheet with the spring with the card fills up and is connected. Utility model has following beneficial effect: a fuse for three -phase circuit protection, the short circuit takes place or when transshipping for an arbitrary looks circuit in three -phase circuit, the fuse disconnection to can send the off signal, make other quarter -phase circuits also break off through the interlocking equipment, avoid lacking of circuit or equipment to move mutually.
Description
Technical field
The utility model relates to electric field, is specifically related to a kind of fuse for three-phase circuit protection.
Background technology
Fuse is proterctive equipment common in supply line, and its operation principle is that after exceeding according to electric current the value a period of 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.
In the three-phase circuit of prior art; the fuse be loaded on circuit has three usually; be respectively used to protect three-phase circuit; and the work of three groups of fuses is separate; a certain circuit is short-circuited or transships, and usually only has a fuse to work, and other two groups of fuses can not action; this often causes circuit, equipment phase-deficient operation, works the mischief to electrical network or equipment.
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 fuse for three-phase circuit protection; can realize when overload or short circuit occur a certain circuit; signal is sent by optional equipment; by interlocking equipment, other two circuits are disconnected; prevent device line or equipment phase-deficient operation, work the mischief to electrical network or equipment.
For achieving the above object, the utility model adopts following technical scheme: a kind of fuse for three-phase circuit protection, comprise: fuse tube, pipe cap, fuse piece, wire, additional resistance, metallic plate, top cap, mat, spring, wire, 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, the other end of two described fuse pieces is in parallel with described additional resistance by described wire, the either end of described additional resistance is connected with described one end wiry, described mat is placed in bottom the cap of described top, described metallic plate is placed in the opening part of described top cap, described spring is placed between described mat and described metallic plate, the described other end wiry is connected with described mat with described spring through described metallic plate.When there is overload or short circuit in the circuitry phase in three-phase circuit, the fuse of a fuse disconnects, the electric current that additional resistance passes through increases, wire is fused, top cap flicks under the action of the spring, top cap sends a signal to interlocking equipment, by interlocking equipment, the circuit of other two-phase is also disconnected, prevents the phase-deficient operation of circuit.
Further, also comprise adapter sleeve, insulating sleeve, described adapter sleeve is placed between described spring and described metallic plate, and described adapter sleeve and described metallic plate are provided with through hole, and the protuberance of described insulating sleeve passes the through hole of described metallic plate and described adapter sleeve and wraps described wire.Wire and the more stable Compress Spring of card is made by insulating sleeve fixing metal silk.
Further, also comprise busbar, described busbar is arranged on the other end of described fuse piece, and described busbar is connected with described wire.Busbar be arranged so that external wire more easily, more stable and described fuse is connected.
Further, between described fuse tube and described pipe cap, be 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 respectively with one end of described two fuse pieces for removably connecting.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 described fuse tube and described packing ring, and 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: a kind of fuse for three-phase circuit protection described in the utility model; when any circuitry phase in three-phase circuit is short-circuited or transships; the melt of fuse disconnects; signal is sent by optional equipment; by interlocking equipment, other quarter-phase circuit is also disconnected, avoid the phase-deficient operation of circuit or equipment.
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 according to structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further.
As described in Figure 1 for the fuse of three-phase circuit protection, it is characterized in that, comprise: fuse tube 1, pipe cap 2, busbar 3, melt 4, fuse piece 5, top cap 8, mat 9, spring 10, wire 11, metallic plate 13, additional resistance 16 and wire 17, 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, the other end of two described fuse pieces 5 is in parallel with described additional resistance 16 by described wire 17, the either end of described additional resistance 16 is connected with one end of described wire 11, described mat is placed in bottom described top cap 8, described metallic plate 13 is placed in the opening part of described top cap 8, described spring 10 is placed between described mat 9 and described metallic plate 13, the other end of described wire 11 is connected with described mat 9 with described spring 10 through described metallic plate 13.During work, a part for wire 11 is fixing on a metal plate, spring 10 is by mat 9, the cooperation compression of metallic plate 13 and wire 11, store certain energy, melt 4 is in parallel with additional resistance 16, wire 11 is connected with additional resistance 16, when melt 4 is after circuit overload or the circuit fusing starting the arc, under arcing, there is enough large electric current to make it heating by wire 11, under pulling force and electric current double action, wire 11 ruptures rapidly, top cap 8 is ejected by spring, top cap 8 sends a signal to interlocking equipment, by interlocking equipment, the circuit of other two-phase is also disconnected, prevent the phase-deficient operation of circuit, interlocking equipment is generally position switch, after top cap 8 is ejected, hits the position switch being contained in fuse rear portion, by this position switch, control the disconnection of other quarter-phase circuit.
Adapter sleeve 12, insulating sleeve 14 is also comprised in this enforcement smoothly, described adapter sleeve 12 is placed between described spring 10 and described metallic plate 13, described adapter sleeve 12 is provided with through hole with described metallic plate 13, and the protuberance of described insulating sleeve 14 passes the through hole of described metallic plate 13 and described adapter sleeve 12 and wraps described wire 11.
In the present embodiment, also comprise busbar 3, described busbar 3 is arranged on the other end of described fuse piece 5, and described busbar 3 is connected with described wire 17.
In an embodiment of the present utility model, between described fuse tube 1 and described pipe cap 2, be 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, the two ends of described melt 4 respectively with one end of described two fuse pieces 5 for removably connecting.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 7 is quartz sand.
Claims (8)
1. the fuse for three-phase circuit protection, it is characterized in that, comprise: fuse tube (1), pipe cap (2), melt (4), fuse piece (5), top cap (8), mat (9), spring (10), wire (11), metallic plate (13), additional resistance (16) and wire (17), 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), 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), the other end of two described fuse pieces (5) is in parallel with described additional resistance (16) by described wire (17), the either end of described additional resistance (16) and one end of described wire (11) are in series, described mat is placed in bottom, described top cap (8), described metallic plate (13) is placed in the opening part on described top cap (8), described spring (10) is placed between described mat (9) and described metallic plate (13), the described other end wiry (11) is connected with described mat (9) with described spring (10) through described metallic plate (13).
2. a kind of fuse for three-phase circuit protection according to claim 1; it is characterized in that: also comprise adapter sleeve (12), insulating sleeve (14); described adapter sleeve (12) is placed between described spring (10) and described metallic plate (13); described adapter sleeve (12) and described metallic plate (13) are provided with through hole, and the protuberance of described insulating sleeve (14) passes the through hole of described metallic plate (13) and described adapter sleeve (12) and wraps described wire (11).
3. a kind of fuse for three-phase circuit protection according to claim 2; it is characterized in that: also comprise busbar (3); described busbar (3) is arranged on the other end of described fuse piece (5), and described busbar (3) is connected with described wire (17).
4. the fuse for three-phase circuit protection according to claim 3, it is characterized in that, be provided with packing ring (7) between described fuse tube (1) and described pipe cap (2), described packing ring (7) is provided with through hole.
5. the fuse for three-phase circuit protection according to claim 4, is characterized in that, the two ends of described melt (4) respectively with one end of described two fuse pieces (5) for removably connecting.
6., according to the arbitrary described fuse for three-phase circuit protection of claim 5, it is characterized in that, also comprise filler (6), described filler (6) is filled between described fuse tube (1) and described packing ring (7).
7. the fuse for three-phase circuit protection according to claim 6, it is characterized in that, described filler (7) is quartz sand.
8., according to the arbitrary described fuse for three-phase circuit protection of claim 1-7, it is characterized in that, the resistance of described additional resistance (16) is greater than the resistance of described melt (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520803372.8U CN205028815U (en) | 2015-10-19 | 2015-10-19 | A fuse for three -phase circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520803372.8U CN205028815U (en) | 2015-10-19 | 2015-10-19 | A fuse for three -phase circuit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028815U true CN205028815U (en) | 2016-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520803372.8U Active CN205028815U (en) | 2015-10-19 | 2015-10-19 | A fuse for three -phase circuit protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205028815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137295A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit data measurement and control device |
-
2015
- 2015-10-19 CN CN201520803372.8U patent/CN205028815U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137295A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit data measurement and control device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |