CN109859915A - The explosion-proof wirewound resistor of high anti-lightning low current fusing - Google Patents
The explosion-proof wirewound resistor of high anti-lightning low current fusing Download PDFInfo
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- CN109859915A CN109859915A CN201910262928.XA CN201910262928A CN109859915A CN 109859915 A CN109859915 A CN 109859915A CN 201910262928 A CN201910262928 A CN 201910262928A CN 109859915 A CN109859915 A CN 109859915A
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- fusing
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Abstract
The present invention gives a kind of explosion-proof wirewound resistors of high anti-lightning low current fusing, including porcelain stick, alloy wire, two conducting wires and two caps, two caps are pressed together on porcelain stick both ends respectively, alloy wire is wound on porcelain stick side wall, it is welded respectively with two caps at alloy wire both ends, two conducting wires are respectively welded on two caps, and porcelain stick and cap outer application have insulating lacquer layer；Porcelain stick side wall is provided with fusing slot, is wound on the alloy wire on porcelain stick side wall by the aperture position of fusing slot, fusing slot memory is placed with combustibles.Circuit is in case of short circuit, this wirewound resistor is by big energy load, alloy wire is generated heat rapidly, and after the heat of alloy wire reaches certain numerical value, the combustibles to fuse in slot explode, the explosive range very little of combustibles, and it only fuses to by the alloy wire at fusing channel opening, causes this wirewound resistor to fail, avoid alloy wire from integrally generating heat and burst, the release for reducing energy, avoids causing security risk.
Description
Technical field
The present invention relates to a kind of explosion-proof wirewound resistors of high anti-lightning low current fusing.
Background technique
Wire-wound resistor, wire resistor, which is primarily adapted for use in the AC-DC Circuits such as precision instrument, telecommunication equipment, electronic equipment, to be made
Partial pressure, decompression, shunting and load resistance are used, and when short circuit occurs, wire-wound resistor receives biggish energy load, line to available circuit
Alloy wire inside resistance is integrally generated heat, and is burst until whole, burst when discharge amount of heat, external equipment is caused hidden
Suffer from.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of structures, and simple, safety anti-explosive high anti-lightning low current is molten
Break explosion-proof wirewound resistor.
In order to solve the above technical problems, the present invention provides a kind of explosion-proof wirewound resistor of high anti-lightning low current fusing,
Including porcelain stick, alloy wire, two conducting wires and two caps, two caps are pressed together on porcelain stick both ends respectively, and alloy wire is wound on
On porcelain stick side wall, alloy wire both ends are welded with two caps respectively, and two conducting wires are respectively welded on two caps, porcelain stick and cap
Outer side of lid is coated with insulating lacquer layer；
Porcelain stick side wall is provided with fusing slot, is wound on the alloy wire on porcelain stick side wall by the aperture position of fusing slot, fuses in slot
Storage has combustibles.
With such a structure, circuit is in case of short circuit, and for this wirewound resistor by big energy load, alloy wire is fast
Speed fever, after the heat of alloy wire reaches certain numerical value, the combustibles explosion to fuse in slot, the explosive range very little of combustibles,
And it only fuses to by the alloy wire at fusing channel opening, causes this wirewound resistor to fail, alloy wire is avoided integrally to generate heat
It bursts, reduces the release of energy, avoid causing security risk.
Technology contents of the invention are understood in order to clearer, below by this high anti-lightning low current fusing explosion-proof line around electricity
Resistance device is referred to as this wirewound resistor.
The fusing slot of this wirewound resistor extends in porcelain stick circumferential direction, and projection of shape of the fusing slot in porcelain stick section is ring
Shape；With such a structure, alloy wire must travel fusing slot in coiling, avoid avoiding melting when alloy wire coiling when assembly
Fault trough opening, cannot at the first time be fused alloy wire by combustibles when short circuit occurs for circuit.
Insulated paint covering is enclosed on the outside of the alloy wire of this wirewound resistor.
The preparation methods of the combustibles of this wirewound resistor the following steps are included:
Take 40 parts by weight of potassium hyperchlorate, 1 parts by weight of carbon black, 5 parts by weight of potassium bichromate, 15 parts by weight of charcoal, 10 parts by weight of sulphur,
5 parts by weight of Potassium Hydrogen Phthalate and 35 parts of calcium nitrate, above-mentioned raw materials are incorporated into epoxy resin liquid, the gross weight of raw material
Amount is that 0.3:1 obtains combustibles after stirring 4 hours with epoxy resin liquid weight ratio.
Combustibles are made using such method, it can when guaranteeing that alloy wire fever reaches certain temperature, combustibles are quick-fried
Fried energy can fuse alloy wire, and the power that combustibles can be allowed to explode is only limitted to fusing alloy wire, avoids involving outside, draw
Play other security risks；
In addition, epoxy resin liquid can guarantee that each raw material is in fusing slot.
The porcelain stick side wall of this wirewound resistor open there are two fuse slot, be respectively the first fusing slot and second fusing slot, around
Alloy wire of the system on porcelain stick side wall is melted by the first fusing slot or the aperture position of the second fusing slot, the first fusing slot and second
Fault trough connection；
First fusing slot memory is placed with the potassium hyperchlorate of 40 parts by weight, the sulphur of 10 parts by weight, the potassium bichromate of 5 parts by weight, 1 weight
Measure the carbon black of part；
Second fusing slot memory be placed with the calcium nitrate of 35 parts by weight, the charcoal of 15 parts by weight, 5 parts by weight hydrogen phthalate
Potassium；
First fusing slot and the second fusing slot connectivity part are separated by wax layer, the first fusing slot be in the opening of porcelain stick side wall with
The opening that second fusing slot is in porcelain stick side wall is sealed also by wax layer.
With such a structure, combustibles are individually positioned in the first fusing slot and the second fusing slot, and circuit occurs short
Lu Shi, when the alloy wire fever of this wirewound resistor reaches certain temperature, wax layer is melted, the substance and second in the first fusing slot
The material mixing to fuse in slot forms combustibles, and combustibles explode after reaching burning point, and the energy of combustibles explosion can melt
Disconnected alloy wire.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this wirewound resistor embodiment one.
Fig. 2 is the schematic diagram of one porcelain stick of this wirewound resistor embodiment.
Fig. 3 is the structural schematic diagram of this wirewound resistor embodiment two.
Fig. 4 is Fig. 3 along sectional view along A-A.
Fig. 5 is the portion the B enlarged drawing of Fig. 4.
Fig. 6 is the schematic diagram of two porcelain stick of this wirewound resistor embodiment.
Specific embodiment
Embodiment one
It (for the clearer structure through this wirewound resistor, is omitted in Fig. 1 on the outside of porcelain stick and cap as shown in Fig. 1 to 2
Insulating lacquer layer).
This wirewound resistor includes porcelain stick 1,5, two conducting wires 4 of alloy wire and two caps 3.
Porcelain stick 1 uses 50% porcelain stick 1 of aluminum content, specification 2*7.5mm, and 1 side wall of porcelain stick middle part is provided with fusing slot 11, fusing
Slot 11 extends in 1 circumferential direction of porcelain stick, and projection of shape of the fusing slot 11 in 1 section of porcelain stick is annular, and fusing 11 memory of slot is placed with
Combustibles 2.
The preparation method of combustibles 2 is the following steps are included: take 40 parts by weight of potassium hyperchlorate, 1 parts by weight of carbon black, potassium bichromate
5 parts by weight, 15 parts by weight of charcoal, 10 parts by weight of sulphur, 5 parts by weight of Potassium Hydrogen Phthalate and 35 parts of calcium nitrate, will be above-mentioned
Raw material is incorporated into epoxy resin liquid, and the total weight and epoxy resin liquid weight ratio of raw material are 0.3:1, stirs 4 hours
Afterwards, combustibles 2 are obtained, above-mentioned epoxy resin liquid is commercial product, and the brand of epoxy resin liquid is NORMIC/ promise Mick,
Viscosity is 8000-12000(mPas).
The material of cap 3 is irony, and it is highly 1.90mm, with a thickness of 0.25mm, conducting wire 4 is adopted that specification internal diameter, which is 2.46mm,
With tinned wird, line footpath 0.6mm, length 25mm, alloy wire 5 has insulating layer (i.e. enameled wire) outside, the diameter of alloy wire 5
For 0.07mm.
Two caps 3 are pressed together on 1 both ends of porcelain stick respectively, and alloy wire 5 is wound on 1 side wall of porcelain stick by automatic winding equipment
On, 5 both ends of alloy wire are welded with two caps 3 respectively, and two conducting wires 4 are respectively welded on two caps 3, are wound on porcelain stick 1
Aperture position of the alloy wire 5 by fusing slot 11 on side wall, the insulation of porcelain stick 1 and 3 eight layers of special operation of outer application of cap
Paint layer (not shown).
When this wirewound resistor normal use, circuit is closed in case of short circuit, this wirewound resistor by big energy load
Spun gold 5 rapidly generate heat, after the heat of alloy wire 5 reaches certain numerical value, fuse slot 11 in combustibles 2 burst, combustibles 2 it is quick-fried
Fried range very little fuses to the alloy wire 5 by fusing 11 opening of slot, causes this wirewound resistor to fail, avoid alloy wire 5
Whole fever is burst, and is reduced the release of energy, is realized explosion-proof effect.
Embodiment two
As shown in Fig. 3 to 6
The present embodiment and the difference of embodiment one are only that: the porcelain stick 1a side wall of this wirewound resistor is opened there are two the slot that fuses, point
It is not the fusing of the first fusing slot 11a and second slot 12a, the center line of the center line of the first fusing slot 11a and the second fusing slot 12a
Perpendicular relationship is wound on the alloy wire 5a on porcelain stick 1a side wall by the opening of the first fusing slot 11a or the second fusing slot 12a
Position, the first fusing slot 11a are connected to the second fusing middle position slot 12a；
Being placed with first group of combustibles 21a, first group of combustibles 21a in first fusing slot 11a includes the potassium hyperchlorate of 40g, 10g
Sulphur, the potassium bichromate of 5g, 1g carbon black, be sufficiently mixed between first group of combustibles 21a；
Being placed with second group of combustibles 22a, second group of combustibles 22a in second fusing slot 12a includes the calcium nitrate of 35g, 15g
The Potassium Hydrogen Phthalate of charcoal, 5g is sufficiently mixed between second group of combustibles 22a；
First fusing slot 11a and the second fusing slot 12a connectivity part are separated by wax layer 6a, and the first fusing slot 11a is in porcelain stick 1a
The opening that the opening of side wall and the second fusing slot 12a are in porcelain stick 1a side wall is sealed also by wax layer 6a.
Combustibles be individually positioned in the first fusing slot 11a and second fusing slot 12a in, circuit occur short circuit when, this line around
When the alloy wire 5a fever of resistor reaches certain temperature, wax layer 6a melts, substance and the second fusing in the first fusing slot 11a
Material mixing in slot 12a forms combustibles, and combustibles explode after reaching burning point, and the energy of combustibles explosion can fuse
Alloy wire 5a.
Above-described is only two kinds of embodiments of the invention, it is noted that for those of ordinary skill in the art
For, without departing from the principle of the present invention, several variations and modifications can also be made, these also should be regarded as belonging to this hair
Bright protection scope, for example, combustibles are using other proportions etc..
Claims (5)
- Explosion-proof wirewound resistor, including porcelain stick, alloy wire, two conducting wires and two caps 1. a kind of high anti-lightning low current fuses Lid, two caps are pressed together on porcelain stick both ends respectively, and alloy wire is wound on porcelain stick side wall, alloy wire both ends respectively with two caps Lid welding, two conducting wires are respectively welded on two caps, and porcelain stick and cap outer application have insulating lacquer layer；It is characterized in that:Porcelain stick side wall is provided at least one fusing slot, is wound on the alloy wire on porcelain stick side wall by the opening position of the fusing slot It sets, fusing slot memory is placed with combustibles.
- The explosion-proof wirewound resistor 2. high anti-lightning low current according to claim 1 fuses, it is characterized in that:The fusing slot extends in porcelain stick circumferential direction, and projection of shape of the fusing slot in porcelain stick section is annular.
- The explosion-proof wirewound resistor 3. high anti-lightning low current according to claim 1 fuses, it is characterized in that:Insulated paint covering is enclosed on the outside of alloy wire.
- The explosion-proof wirewound resistor 4. high anti-lightning low current according to claim 2 fuses, it is characterized in that:The preparation methods of the combustibles the following steps are included:Take 40 parts by weight of potassium hyperchlorate, 1 parts by weight of carbon black, 5 parts by weight of potassium bichromate, 15 parts by weight of charcoal, 10 parts by weight of sulphur, 35 parts by weight of 5 parts by weight of Potassium Hydrogen Phthalate and calcium nitrate, above-mentioned raw materials are incorporated into epoxy resin liquid, raw material Total weight and epoxy resin liquid weight ratio are that 0.3:1 obtains combustibles after stirring 4 hours.
- The explosion-proof wirewound resistor 5. high anti-lightning low current according to claim 1 fuses, it is characterized in that:Porcelain stick side wall is opened there are two the slot that fuses, and is the first fusing slot and the second fusing slot, the conjunction being wound on porcelain stick side wall respectively Spun gold is connected to by the first fusing slot or the aperture position of the second fusing slot, the first fusing slot with the second fusing slot；First fusing slot memory is placed with the potassium hyperchlorate of 40 parts by weight, the sulphur of 10 parts by weight, the potassium bichromate of 5 parts by weight, 1 weight Measure the carbon black of part；Second fusing slot memory be placed with the calcium nitrate of 35 parts by weight, the charcoal of 15 parts by weight, 5 parts by weight hydrogen phthalate Potassium；First fusing slot and the second fusing slot connectivity part are separated by wax layer, the first fusing slot be in the opening of porcelain stick side wall with The opening that second fusing slot is in porcelain stick side wall is sealed also by wax layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262928.XA CN109859915A (en) | 2019-04-02 | 2019-04-02 | The explosion-proof wirewound resistor of high anti-lightning low current fusing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262928.XA CN109859915A (en) | 2019-04-02 | 2019-04-02 | The explosion-proof wirewound resistor of high anti-lightning low current fusing |
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|---|---|
| CN109859915A true CN109859915A (en) | 2019-06-07 |
Family
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| CN201910262928.XA Pending CN109859915A (en) | 2019-04-02 | 2019-04-02 | The explosion-proof wirewound resistor of high anti-lightning low current fusing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927874A (en) * | 2021-01-26 | 2021-06-08 | 卢东生 | Cross wire-wound high-voltage low-inductance wire-wound resistor |
| CN113035663A (en) * | 2021-02-06 | 2021-06-25 | 安徽省昌盛电子有限公司 | Multi-point fusing type low-temperature fusing wire-wound resistor |
| CN114823016A (en) * | 2022-05-17 | 2022-07-29 | 安徽省昌盛电子有限公司 | Resistor for resisting instant overload current |
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| GB506529A (en) * | 1937-11-29 | 1939-05-30 | Charles Tate Scarf | Improvements in flame-proof rheostatic and like resistances for use in mines |
| GB738240A (en) * | 1953-09-24 | 1955-10-12 | Welwyn Electrical Lab Ltd | Improvements in or relating to resistors |
| GB1359790A (en) * | 1971-07-13 | 1974-07-10 | Matsushita Electric Ind Co Ltd | Flame-proof resistors |
| US20130293343A1 (en) * | 2010-12-31 | 2013-11-07 | Xiamen Set Electronics Co., Ltd. | Device combining a thermal fuse and a resistor |
| CN206388576U (en) * | 2017-01-12 | 2017-08-08 | 东莞市星瑞机电有限公司 | A kind of half short-circuit low temperature fusing Anti-explosion fuse resistor |
| CN206595101U (en) * | 2017-03-14 | 2017-10-27 | 安徽省昌盛电子有限公司 | Explosion-proof MELF wirewound resistors |
| CN206657686U (en) * | 2017-03-16 | 2017-11-21 | 深圳钰洲信电子有限公司 | A kind of half short-circuit resistance with anti-lightning |
| CN107978402A (en) * | 2016-10-24 | 2018-05-01 | 天津市汉陆电子有限公司 | Compound quick fuse wire wound resistor |
| CN108010648A (en) * | 2017-12-28 | 2018-05-08 | 安徽省昌盛电子有限公司 | Half short circuit fixed point fusing anti-lightning surge wirewound resistor |
| US20180254163A1 (en) * | 2014-01-17 | 2018-09-06 | First Resistor & Condenser Co., Ltd. | Wire-wound fuse resistor and method for manufacturing same |
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2019
- 2019-04-02 CN CN201910262928.XA patent/CN109859915A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB506529A (en) * | 1937-11-29 | 1939-05-30 | Charles Tate Scarf | Improvements in flame-proof rheostatic and like resistances for use in mines |
| GB738240A (en) * | 1953-09-24 | 1955-10-12 | Welwyn Electrical Lab Ltd | Improvements in or relating to resistors |
| GB1359790A (en) * | 1971-07-13 | 1974-07-10 | Matsushita Electric Ind Co Ltd | Flame-proof resistors |
| US20130293343A1 (en) * | 2010-12-31 | 2013-11-07 | Xiamen Set Electronics Co., Ltd. | Device combining a thermal fuse and a resistor |
| US20180254163A1 (en) * | 2014-01-17 | 2018-09-06 | First Resistor & Condenser Co., Ltd. | Wire-wound fuse resistor and method for manufacturing same |
| CN107978402A (en) * | 2016-10-24 | 2018-05-01 | 天津市汉陆电子有限公司 | Compound quick fuse wire wound resistor |
| CN206388576U (en) * | 2017-01-12 | 2017-08-08 | 东莞市星瑞机电有限公司 | A kind of half short-circuit low temperature fusing Anti-explosion fuse resistor |
| CN206595101U (en) * | 2017-03-14 | 2017-10-27 | 安徽省昌盛电子有限公司 | Explosion-proof MELF wirewound resistors |
| CN206657686U (en) * | 2017-03-16 | 2017-11-21 | 深圳钰洲信电子有限公司 | A kind of half short-circuit resistance with anti-lightning |
| CN108010648A (en) * | 2017-12-28 | 2018-05-08 | 安徽省昌盛电子有限公司 | Half short circuit fixed point fusing anti-lightning surge wirewound resistor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927874A (en) * | 2021-01-26 | 2021-06-08 | 卢东生 | Cross wire-wound high-voltage low-inductance wire-wound resistor |
| CN113035663A (en) * | 2021-02-06 | 2021-06-25 | 安徽省昌盛电子有限公司 | Multi-point fusing type low-temperature fusing wire-wound resistor |
| CN113035663B (en) * | 2021-02-06 | 2023-09-15 | 安徽省昌盛电子有限公司 | Multi-point fusing type low-temperature fusing wire-wound resistor |
| CN114823016A (en) * | 2022-05-17 | 2022-07-29 | 安徽省昌盛电子有限公司 | Resistor for resisting instant overload current |
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