CN206790089U - A kind of power lightning protection component of fire-proof and explosion-proof type - Google Patents
A kind of power lightning protection component of fire-proof and explosion-proof type Download PDFInfo
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- CN206790089U CN206790089U CN201720626707.2U CN201720626707U CN206790089U CN 206790089 U CN206790089 U CN 206790089U CN 201720626707 U CN201720626707 U CN 201720626707U CN 206790089 U CN206790089 U CN 206790089U
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- explosion
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- piezo
- resistance
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Abstract
It the utility model is related to a kind of power lightning protection component of fire-proof and explosion-proof type, including shell, base, inner casing, the first explosion-proof layer, the second explosion-proof layer, piezo-resistance component and fuse；Inner casing is provided with the second passage；Base is provided with wiring hole；The beneficial effects of the utility model are：Coordinated using shell, base, inner casing, the first explosion-proof layer, the second explosion-proof layer, piezo-resistance component and fuse, when piezo-resistance is by surge impact, temperature rises, internal gas expands to spread to top through hole, and now smart temperature fuse just can more directly feel the change of temperature, and gas is in diffusion process also by the resistance of fire protection flame retarding thing, pass through the buffering of two layers of explosion-proof layer, brisance will be reduced, and plus fire proofing material is filled with, safe effect is good；The fixing hole set using base, convenient installation；Using the convenient installation of wiring hole with being connected.
Description
Technical field
Home circuit technical field is the utility model is related to, specially a kind of power lightning protection component of fire-proof and explosion-proof type.
Background technology
Household electrical appliance are all single phase power supplies, mostly only in a phase line L and neutral conductor N indirect piezoresistor in present situation
As overvoltage protection element, this protected mode is referred to as cross-protection, also referred to as differential mode protected mode.Only differential mode is not
No more.Power surge simultaneously not only comes from thunderbolt, and power supply wave can be all produced when the big load of short trouble, switching occurs in power system
Gush, power network stretches a thousand li, and whether thunderbolt or line surge odds are all very high.When a distant place is there occurs being struck by lightning, thunder
Hit surge to transmit by the power network light velocity, decay by transformer station etc., to the high pressure that may still have during each family more than kilovolt, though
The right time is very short, is also enough the semiconductor devices damaged in the equipment such as household electrical appliance and IT power supplys.It is this by phase line L, in
Line forms longitudinal overvoltage to the voltage of line transmission over the ground, it is necessary to this longitudinal Overvoltage suppressing is gone down, to prevent electricity
The insulation of sub-circuit is destroyed, and this protection is referred to as vertical protection, and also referred to as common mode is protected.The impedance of each line over the ground is not
Unanimously, neutral conductor N and ground wire are Low ESR under normal circumstances, therefore, may there is higher transverse direction between phase line L and neutral conductor N
Overvoltage；When the action of longitudinal overvoltage protection device is inconsistent, higher transverse over voltage can be caused between each line.Therefore, it is right
For household electrical appliance, best pattern is protected using full mould, i.e. common mode protection plus differential mode protection.The side of this kind of full mould protection
Method, realized usually using piezo-resistance.
The shortcomings that piezo-resistance is easy to aging, can cause short circuit when in most cases P-N junction is overloaded and can not return back to
Normal condition, the diode element under the repeated multiple times effect of surge in piezo-resistance is breakdown, the low-resistance line of resistive element
Propertyization is progressively aggravated, and pressure sensitive voltage is more and more lower, and leakage current is increasing, the liter of piezo-resistance body temperature in actual use
Height, cause leakage current bigger, form vicious circle, so that temperature rise reaches the burning-point of its exterior packaging material, so as to be risen because of high fever
Fire.
The failure omen of piezo-resistance is the fast lifting of temperature, and the lifting speed of temperature is faster than the lifting speed of leakage current
Degree, therefore be most suitable come the timely performance for judging piezo-resistance using temperature treatment mode.The key of its protecting effect is
The collection of heat, transmission speed.It is existing all to be used using the full mould protection lightning protection device of the piezo-resistance with temperature protection, the mode of connection
Pin is wound or the mode of spot welding, and this structure is cumbersome, and contact of the Thermal Cutoffs with piezo-resistance is linear contact, and temperature is transmitted
Slowly, pin position is uncontrollable, is unfavorable for producing, protecting effect is bad.
Utility model content
In order to overcome above mentioned problem, the utility model provides a kind of fire-proof and explosion-proof lightning protection module, utility model profit
Coordinated with shell, base, inner casing, the first explosion-proof layer, the second explosion-proof layer, piezo-resistance component and fuse, piezo-resistance is by wave
When gushing impact, temperature rises, and internal gas expands to spread to top through hole, and now smart temperature fuse just can be more direct
Feel the change of temperature, gas in diffusion process also by the resistance of fire protection flame retarding thing, by the buffering of two layers of explosion-proof layer,
Brisance will be reduced, and plus fire proofing material is filled with, safe effect is good；The fixing hole set using base, convenient installation；
Installed using wiring hole is convenient.
To achieve these goals, the utility model provides following technical scheme：
A kind of power lightning protection component of fire-proof and explosion-proof type, including it is shell, base, inner casing, the first explosion-proof layer, second explosion-proof
Layer, piezo-resistance component and fuse；
The shell is arranged on the base；
The power lightning protection component is removably mounted in fixed plate by the base；
The shell, first explosion-proof layer, the inner casing and the second explosion-proof layer are set gradually, and the shell is provided with
First passage, the inner casing are provided with the second passage；
The base is provided with wiring hole, for connecting power supply；
The fuse is electrically connected with the piezo-resistance component, and the fuse and piezo-resistance component are arranged at
In second explosion-proof layer.
Further, the base is provided with fixing hole.
Further, the fixing hole is strip hole.
Further, the piezo-resistance component includes the first piezo-resistance and the second piezo-resistance, and the fuse is set
Between first piezo-resistance and second piezo-resistance.
Further, in addition to cover plate, the cover plate is set fluted, and the wall thickness of the width of the groove and the inner casing is matched somebody with somebody
Close, so that the inner casing is placed in the groove.
Further, the material of first explosion-proof layer and second explosion-proof layer is quartz sand or epoxy resin.
Further, the material of the shell, base and inner casing is ceramics.
Further, the material of the cover plate is ceramics.
The utility model have the advantage that including：
Coordinated using shell, base, inner casing, the first explosion-proof layer, the second explosion-proof layer, piezo-resistance component and fuse, pressure
When quick resistance is by surge impact, temperature rises, and internal gas expands to spread to top through hole, and now smart temperature fuse
The change of temperature just can be more directly felt, gas, also by the resistance of fire protection flame retarding thing, is prevented in diffusion process by two layers
The buffering of quick-fried layer, brisance will be reduced, and plus fire proofing material is filled with, safe effect is good；
The fixing hole set using base, convenient installation；
Using the convenient installation of wiring hole with being connected.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is front view described in the utility model；
Fig. 2 is top view described in the utility model；
Fig. 3 is upward view described in the utility model；
Fig. 4 is sectional view described in the utility model；
Fig. 5 is upward view described in the utility model.
Description of reference numerals is as follows：
1st, base；2nd, shell；3rd, fixing hole；4th, venthole；5th, the first piezo-resistance；6th, fuse；7th, the second pressure-sensitive electricity
Resistance；8th, the first explosion-proof layer；9th, inner casing；10th, the second explosion-proof layer；11st, cover plate；12nd, wiring hole；13rd, the first passage；14th, second
Passage.
Embodiment
, below will be to technology of the present utility model to make the purpose of this utility model, technical scheme and advantage clearer
Scheme is described in detail.Obviously, described embodiment is only the utility model part of the embodiment, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not before creative work is made
Resulting all other embodiment is put, belongs to the scope that the utility model is protected.
As Figure 1-Figure 5, the utility model provides a kind of power lightning protection component of fire-proof and explosion-proof type, including shell 2,
Base 1, inner casing, the first explosion-proof layer 8, the second explosion-proof layer 10, piezo-resistance component and fuse 6；
The shell 2 is arranged on the base 1；
The power lightning protection component is removably mounted in fixed plate by the base 1；
The shell 2, first explosion-proof layer 8, the inner casing and the second explosion-proof layer 10 are set gradually, and the shell 2
The first passage 13 is provided with, the inner casing is provided with the second passage 14；
The base 1 is provided with wiring hole 12, for connecting power supply；
The fuse 6 is electrically connected with the piezo-resistance component, and the fuse 6 and piezo-resistance component are respectively provided with
In second explosion-proof layer 10.
The base 1 is provided with fixing hole 3.
The fixing hole 3 is strip hole.
The piezo-resistance component includes the first piezo-resistance 5 and the second piezo-resistance 7, and the fuse 6 is arranged on institute
State between the first piezo-resistance 5 and second piezo-resistance 7.
Also include cover plate 11, the cover plate 11 sets fluted, and the wall thickness of the width of the groove and the inner casing 9 is matched somebody with somebody
Close, so that the inner casing 9 is placed in the groove.
The material of first explosion-proof layer 8 and second explosion-proof layer is quartz sand or epoxy resin.
The material of the shell 2, base 1 and inner casing is ceramics.
The material of the cover plate 11 is ceramics.
Power lightning protection component using above-mentioned fire-proof and explosion-proof type is as follows：
Matched somebody with somebody using shell 2, base 1, inner casing, the first explosion-proof layer 8, the second explosion-proof layer 10, piezo-resistance component and fuse 6
Close, when piezo-resistance is by surge impact, temperature rises, and internal gas expands to spread to top through hole, and now smart temperature
Fuse 6 just can more directly feel the change of temperature, and gas, also by the resistance of fire protection flame retarding thing, passes through in diffusion process
The buffering of two layers of explosion-proof layer, brisance will be reduced, and plus fire proofing material is filled with, safe effect is good；
The fixing hole 3 set using base 1, convenient installation；
Using the convenient installation of wiring hole 12 with being connected；
By the use of quartz sand or epoxy resin as fire proofing material, there is high temperature resistant, corrosion resistant advantage.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with the power
The protection domain that profit requires is defined.
Claims (8)
- A kind of 1. power lightning protection component of fire-proof and explosion-proof type, it is characterised in that：Including shell, base, inner casing, the first explosion-proof layer, Second explosion-proof layer, piezo-resistance component and fuse；The shell is arranged on the base；The power lightning protection component is removably mounted in fixed plate by the base；The shell, first explosion-proof layer, the inner casing and the second explosion-proof layer are set gradually, and the shell is provided with first Passage, the inner casing are provided with the second passage；The base is provided with wiring hole, for connecting power supply；The fuse electrically connects with the piezo-resistance component, and the fuse and piezo-resistance component be arranged at it is described In second explosion-proof layer.
- 2. the power lightning protection component of fire-proof and explosion-proof type according to claim 1, it is characterised in that the base is provided with solid Determine hole.
- 3. the power lightning protection component of fire-proof and explosion-proof type according to claim 2, it is characterised in that the fixing hole is strip Hole.
- 4. the power lightning protection component of fire-proof and explosion-proof type according to claim 1, it is characterised in that the piezo-resistance component Including the first piezo-resistance and the second piezo-resistance, the fuse is arranged on first piezo-resistance and described second pressure-sensitive Between resistance.
- 5. the power lightning protection component of fire-proof and explosion-proof type according to claim 1, it is characterised in that described also including cover plate Cover plate sets fluted, the wall thickness cooperation of the width of the groove and the inner casing, so that the inner casing is placed in the groove It is interior.
- 6. the power lightning protection component of fire-proof and explosion-proof type according to claim 1, it is characterised in that first explosion-proof layer and The material of second explosion-proof layer is quartz sand or epoxy resin.
- 7. the power lightning protection component of fire-proof and explosion-proof type according to claim 1, it is characterised in that the shell, base and The material of inner casing is ceramics.
- 8. the power lightning protection component of fire-proof and explosion-proof type according to claim 5, it is characterised in that the material of the cover plate is Ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720626707.2U CN206790089U (en) | 2017-06-01 | 2017-06-01 | A kind of power lightning protection component of fire-proof and explosion-proof type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720626707.2U CN206790089U (en) | 2017-06-01 | 2017-06-01 | A kind of power lightning protection component of fire-proof and explosion-proof type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790089U true CN206790089U (en) | 2017-12-22 |
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ID=60714923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720626707.2U Active CN206790089U (en) | 2017-06-01 | 2017-06-01 | A kind of power lightning protection component of fire-proof and explosion-proof type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206790089U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654014A (en) * | 2020-08-06 | 2020-09-11 | 南京翔维物流设备制造有限公司 | Electric power engineering surge protector |
-
2017
- 2017-06-01 CN CN201720626707.2U patent/CN206790089U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654014A (en) * | 2020-08-06 | 2020-09-11 | 南京翔维物流设备制造有限公司 | Electric power engineering surge protector |
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