CN104362584A - Safety lightning protection device - Google Patents
Safety lightning protection device Download PDFInfo
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- CN104362584A CN104362584A CN201410606480.6A CN201410606480A CN104362584A CN 104362584 A CN104362584 A CN 104362584A CN 201410606480 A CN201410606480 A CN 201410606480A CN 104362584 A CN104362584 A CN 104362584A
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- fuse
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- storehouse
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Abstract
The invention discloses a safety lighting protection device, and belongs to the technical field of lighting protection equipment. The device comprises a box body, an inner drawer, a hot trip device, an MOV (Metal Oxide Varistors) chip and a fuse protector, wherein the inner drawer is arranged in the box body, the hot trip device is arranged in the inner drawer and is respectively connected with the MOV chip and the fuse protector, the inner drawer is internally provide with the chip cavity and the fuse protector cavity and the MOV chip is arranged in the chip cavity; the fuse protector is arranged in a fuser cavity, the chip cavity is filled with a thermal balance covering layer which covers the MOV chip, and the fuser is internally provided with a current-limiting heat collecting cabin, a cooling cabin and a fuse; a space formed by the outer wall of the current-limiting heat collecting cabin and the inner wall of the fuser is the cooling bin, and a cooling material is filled in the cooling bin and the fuse penetrates through the current-limiting heat collecting cabin and the cooling bin. According to the safety lighting protection device provided by the invention, the tolerance time of a breakdown short-circuit current of the MOV chip and the breaking response time of the fuser can be improved; furthermore, the flaming of the lighting protection device can be prevented to cause greater combustion and fires when the lighting protection device is broken down by the transient state overvoltage of power frequency.
Description
Technical field
The invention belongs to thunder resisting equipment technical field, relate to a kind of puncturing under Frequency Transient Overvoltage state and do not produce naked light and blown fuse time short lightning protection device, the lightning current through-current capacity increasing fuse accelerates short circuit current fusing speed simultaneously, the feature that actual residual voltage is low, refers in particular to a kind of safe lightning protection device.
Background technology
The effect of lightning protection device is used to protect a kind of protective device that in low-voltage distribution system, various electric equipment impacts from lightning overvoltage, switching overvoltage, Frequency Transient Overvoltage and damages.
Existing lightning protection for power supply is not with special fuse, all be separated with miniature circuit breaker or common fuse to use, therebetween can not reach and closely cooperate, the lightning protection device commercially purchased by the standard of GB18802.1-2011 and IEC61643.11-2011 at present and fuse are installed, the result in using:
(1) existing fuse adopts copper or silver, in order to reach a larger through-current capacity, usually can strengthen the diameter of fuse, but fuse again can not quick-break in official hour in this case, causes lightning protection device flame, successional burning; Reduce the diameter of fuse, can fusing time be shortened, but large through-current capacity cannot be obtained again, technical indicator exists contradiction.
(2) fuse malfunction is done, and when Lightning Over-voltage, fuse fuses; Cause the overvoltage of thunder and lightning to invade circuit and equipment, cause protected device damage.
In addition, thermal balance device when existing lightning protection device does not have MOV chip (voltage dependent resistor chip) to be punctured by Frequency Transient Overvoltage, makes lightning protection device occur to continue flame and causes larger burning and fire.Because the reason that fuse is external makes the distribution of circuit long, the residual voltage ratio produced between its two ends when causing lightning discharge electric current to flow through lightning protection device is higher.
Summary of the invention
The object of this invention is to provide a kind of improve MOV chip breakdown characteristics while, also improve the safe lightning protection device of fuse response time.
The object of the present invention is achieved like this: a kind of safe lightning protection device, comprise box body, interior pumping case, thermal release device, MOV chip and fuse, described interior pumping case is placed in box body, thermal release device is arranged in interior pumping case, and respectively with MOV chip, fuse connects, wherein, chip chamber and fuse chamber is provided with in described interior pumping case, described MOV chip is arranged in chip chamber, described fuse is arranged in fuse chamber, thermal balance integument is filled with in described chip chamber, thermal balance integument by MOV chip parcel within it, current limliting heat build-up storehouse is provided with in described fuse, heat-dissipating storehouse and fuse, the space that the described outer wall in current limliting heat build-up storehouse and the inwall of described fuse are formed is heat-dissipating storehouse, heat sink material is filled with in described heat-dissipating storehouse, described fuse runs through described current limliting heat build-up storehouse and heat-dissipating storehouse.Fuse is set directly in box body, shortens the wiring lengths of circuit, improves the response time, reduce residual voltage simultaneously, and utilize thermal balance integument by MOV chip parcel within it, when MOV chip is punctured by Frequency Transient Overvoltage time, spurt spark, directly stopped by thermal balance integument, absorb, extend breakdown time, while like this, fuse in fuse, a part is wrapped up by the heat sink material of heat-dissipating storehouse, dispel the heat timely, another part is in current limliting heat build-up storehouse, carry out heat build-up, improve the temperature in current limliting heat build-up storehouse, make fuse forms the temperature difference, high temperature is focused on the part that fuse is in current limliting heat build-up storehouse, carry out the fusing of fixed point local, accelerate fusing speed, the further raising response time, by extending the two-way function of breakdown time and raising response time, the through-current capacity that acquisition is larger can be met, fusing time can be shortened again, naked light is made to have little time to puncture box body, protect external equipment, substantially increase security performance.
Further optimization, be filled with heat build-up material in described current limliting heat build-up storehouse, described heat build-up material is asbestos, can further improve the heat build-up ability in current limliting heat build-up storehouse, and be rapidly heated the fusing point that reaches fuse accelerate fusing.Also can filling liquid or gaseous state heat build-up material.
Further optimization, the heat sink material in described thermal balance integument and heat-dissipating storehouse all adopts quartz sand or pottery.Because the endothermic effect of quartz sand or pottery is fine, and can stop spark and extraneous contact completely, blowout of spark better faster, extend breakdown time, the material of certain thermal balance integument has a variety of selection, the material of such as various fire extinguishing heat absorption.
Further optimization, described thermal release device comprises brace, hot dropout lever and reset tension spring, and described brace one end and described MOV chip are by alloy low temperature tin welding, and the other end of described brace is connected with fuse.Adopt the thermal release device that brace, hot dropout lever and reset tension spring are formed; when lightning protection device bulk temperature rising reaches 120K; alloy low temperature tin on brace affects thawing by temperature rise; allow thermal release device action, be separated with distribution system, ensure that the safety of protected equipment; reset tension spring shrinks simultaneously; make hot dropout lever carry out deterioration instruction, as a physical degradation indicating device, thus improve overall fail safe.The matching relationship between fuse and lightning protection device is solved by thermal release device, avoid the misoperation that fuse causes when Lightning Over-voltage, improve the response time of fuse, ensure that MOV chip and fuse hightail when Frequency Transient Overvoltage, disjunction, Lightning Over-voltage is limited by lightning protection device.
Further optimization, is also provided with deterioration instruction modular converter in described interior pumping case, described deterioration instruction modular converter is provided with instruction diode, and described deterioration instruction modular converter is connected with the two ends of described fuse.While physical degradation indicating device, be provided with an electronics deterioration indicating device, time fuse does not fuse, because deterioration instruction modular converter is connected on the two ends of fuse, the balance of voltage, do not produce voltage difference, instruction diode does not work, when fuse blows time, the two ends of fuse just create voltage difference, deterioration instruction modular converter generation current, instruction diode lights, do the instruction of deterioration, form an electronics deterioration indicating device, coordinate with physical degradation indicating device, more accurate, carry out deterioration instruction comprehensively, facilitate staff to observe and judge deterioration state.
The present invention gives prominence to compared to existing technology and useful technique effect is: improve the puncture short electric current tolerance time of MOV chip and the disjunction response time of fuse, when being punctured by Frequency Transient Overvoltage, make lightning protection device can not flame, avoid causing larger burning and fire.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that schematic diagram is looked on a left side of Fig. 1;
Fig. 3 is the schematic top plan view of Fig. 1;
Fig. 4 is the test waveform figure that the present invention embodies the MOV chip deboost time;
Fig. 5 is the test waveform figure that the present invention embodies the blown fuse time;
Fig. 6 is test data table;
In figure: 10-box body, pumping case in 11-, 12-thermal release device, 13-MOV chip, 14-fuse, 15-chip chamber, 16-fuse chamber, 17-thermal balance integument, 18-current limliting heat build-up storehouse, 19-heat-dissipating storehouse, 20-fuse, 21-brace, the hot dropout lever of 22-, 23-reset tension spring, 24-deterioration instruction modular converter, 25-indicates diode, 26-conductive insert I, 27-conductive insert II.
Embodiment
Below in conjunction with accompanying drawing, with specific embodiment, the invention will be further described, see Fig. 1-6: a kind of safe lightning protection device, comprise box body 10, interior pumping case 11, thermal release device 12, MOV chip 13 and fuse 14, described interior pumping case 11 is placed in box body 10, thermal release device 12 is arranged in interior pumping case 11, and respectively with MOV chip 13, fuse 14 connects, box body 10 arranged outside has conductive insert I 26 and conductive insert II 27, wherein, chip chamber 15 and fuse chamber 16 is provided with in described interior pumping case 11, described MOV chip 13 is arranged in chip chamber 15, described fuse 14 is arranged in fuse chamber 16, thermal balance integument 17 is filled with in described chip chamber 15, MOV chip 13 wraps up within it by thermal balance integument 17, current limliting heat build-up storehouse 18 is provided with in described fuse 14, heat-dissipating storehouse 19 and fuse 20, the space that the described outer wall in current limliting heat build-up storehouse 18 and the inwall of described fuse 14 are formed is heat-dissipating storehouse 19, described current limliting heat build-up storehouse 18 is filled with heat build-up material, described heat build-up material is asbestos, can further improve the heat build-up ability in current limliting heat build-up storehouse 18, be rapidly heated the fusing point that reaches fuse 20 accelerate fusing, heat sink material is filled with in described heat-dissipating storehouse 19.Heat sink material in described thermal balance integument 17 and heat-dissipating storehouse 19 all adopts quartz sand, because the endothermic effect of quartz sand is fine, and can stop spark and extraneous contact completely, blowout of spark better faster, extend breakdown time.Described fuse 20 runs through described current limliting heat build-up storehouse 18 and heat-dissipating storehouse 19.Fuse 14 is set directly in box body 10, shortens the wiring lengths of circuit, improves the response time, reduce residual voltage simultaneously, and utilize thermal balance integument 17 to wrap up within it by MOV chip 13, when MOV chip 13 is punctured by Frequency Transient Overvoltage time, spurt spark, directly stopped by thermal balance integument 17, absorb, extend breakdown time, while like this, fuse 20 in fuse 14, a part is wrapped up by the heat sink material of heat-dissipating storehouse 19, dispel the heat timely, another part is in current limliting heat build-up storehouse 18, carry out heat build-up, improve the temperature in current limliting heat build-up storehouse 18, make fuse 20 forms the temperature difference, high temperature is focused on the part that fuse 20 is in current limliting heat build-up storehouse 18, carry out the fusing of fixed point local, accelerate fusing speed, the further raising response time, by extending the two-way function of breakdown time and raising response time, naked light is made to have little time to puncture box body 10, protect external equipment, substantially increase security performance.As Figure 4-Figure 6, for experimental test oscillogram of the present invention and data result, SPD of the present invention (lightning protection device) reaches 200 to 400 milliseconds by the tolerance time of voltage 800V electric current 100 ampere-hour MOV chip, be up to 867.2 milliseconds, and the circuit fusing time of fuse body of the present invention is the longest 1545.9 to 1067.9 milliseconds, reach 437.3 milliseconds the soonest.Reach the performance of SPD (lightning protection device) safety requirements, the present invention effectively for all power network lines, can do backing to electrical network and people's property safety.
Described thermal release device 12 comprises brace 21, hot dropout lever 22 and reset tension spring 23, and described brace 21 one end and described MOV chip 13 are by alloy low temperature tin welding, and the other end of described brace 21 is connected with fuse 14.Adopt the thermal release device 12 that brace 21, hot dropout lever 22 and reset tension spring 23 are formed; when lightning protection device bulk temperature rising reaches 120K; alloy low temperature tin on brace 21 affects thawing by temperature rise; allow thermal release device 12 action, be separated with distribution system, ensure that the safety of protected equipment; reset tension spring 23 shrinks simultaneously; make hot dropout lever 22 carry out deterioration instruction, as a physical degradation indicating device, thus improve overall fail safe.The matching relationship between fuse 14 and lightning protection device is solved by thermal release device 12, avoid the misoperation that fuse 14 causes when Lightning Over-voltage, improve the response time of fuse 14, ensure that MOV chip 13 and fuse 14 hightail when Frequency Transient Overvoltage, disjunction, Lightning Over-voltage is limited by lightning protection device.
Also be provided with deterioration instruction modular converter 24 in described interior pumping case 11, described deterioration instruction modular converter 24 is provided with instruction diode 25, described deterioration instruction modular converter 24 is connected with the two ends of described fuse 14.While physical degradation indicating device, be provided with an electronics deterioration indicating device, time fuse 14 does not have to fuse, because deterioration instruction modular converter 24 is connected on the two ends of fuse 14, the balance of voltage, do not produce voltage difference, instruction diode 25 does not work, when fuse 14 fuses time, the two ends of fuse 14 just create voltage difference, deterioration instruction modular converter 24 generation current, instruction diode 25 lights, do the instruction of deterioration, form an electronics deterioration indicating device, coordinate with physical degradation indicating device, more accurate, carry out deterioration instruction comprehensively, facilitate staff to observe and judge deterioration state.
Above-described embodiment is only preferred embodiment of the present invention, not limits the scope of the invention according to this, therefore: all equivalence changes done according to structure of the present invention, shape, principle, all should be covered by within protection scope of the present invention.
Claims (5)
1. a safe lightning protection device, comprise box body, interior pumping case, thermal release device, MOV chip and fuse, described interior pumping case is placed in box body, thermal release device is arranged in interior pumping case, and respectively with MOV chip, fuse connects, it is characterized in that: in described interior pumping case, be provided with chip chamber and fuse chamber, described MOV chip is arranged in chip chamber, described fuse is arranged in fuse chamber, thermal balance integument is filled with in described chip chamber, thermal balance integument by MOV chip parcel within it, current limliting heat build-up storehouse is provided with in described fuse, heat-dissipating storehouse and fuse, the space that the described outer wall in current limliting heat build-up storehouse and the inwall of described fuse are formed is heat-dissipating storehouse, heat sink material is filled with in described heat-dissipating storehouse, described fuse runs through described current limliting heat build-up storehouse and heat-dissipating storehouse.
2. safe lightning protection device according to claim 1, is characterized in that: be filled with heat build-up material in described current limliting heat build-up storehouse, described heat build-up material is asbestos.
3. safe lightning protection device according to claim 1, is characterized in that: the heat sink material in described thermal balance integument and heat-dissipating storehouse all adopts quartz sand or pottery.
4. safe lightning protection device according to claim 1, it is characterized in that: described thermal release device comprises brace, hot dropout lever and reset tension spring, described brace one end and described MOV chip are by alloy low temperature tin welding, and the other end of described brace is connected with fuse.
5. the safe lightning protection device according to claim 1-4 any one, it is characterized in that: in described interior pumping case, be also provided with deterioration instruction modular converter, described deterioration instruction modular converter is provided with instruction diode, and described deterioration instruction modular converter is connected with the two ends of described fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606480.6A CN104362584B (en) | 2014-10-31 | 2014-10-31 | A kind of safe lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606480.6A CN104362584B (en) | 2014-10-31 | 2014-10-31 | A kind of safe lightning protection device |
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| Publication Number | Publication Date |
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| CN104362584A true CN104362584A (en) | 2015-02-18 |
| CN104362584B CN104362584B (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410606480.6A Active CN104362584B (en) | 2014-10-31 | 2014-10-31 | A kind of safe lightning protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680436A (en) * | 2016-01-28 | 2016-06-15 | 佛山市浦斯电子有限公司 | Surge protection apparatus with power frequency overcurrent protection melt-contained independent cavities |
| CN104638519B (en) * | 2015-03-17 | 2016-08-31 | 国网山东省电力公司烟台市牟平区供电公司 | There is heat radiation and the electric power facility lightning arrester of shock-absorbing function and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462025A1 (en) * | 1990-06-11 | 1991-12-18 | Schneider Electric Sa | Disconnectable surge arrester for low-voltage installations |
| CN202917942U (en) * | 2012-10-24 | 2013-05-01 | 康迎利 | Surge protection device (SPD) dedicated security device |
| CN203398066U (en) * | 2013-08-15 | 2014-01-15 | 浙江新力熔断器有限公司 | Fuse body for protecting photovoltaic system |
| CN103915833A (en) * | 2014-03-11 | 2014-07-09 | 王统 | Safe anti-thunder device |
| CN204216561U (en) * | 2014-10-31 | 2015-03-18 | 王统 | A kind of safe lightning protection device |
-
2014
- 2014-10-31 CN CN201410606480.6A patent/CN104362584B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462025A1 (en) * | 1990-06-11 | 1991-12-18 | Schneider Electric Sa | Disconnectable surge arrester for low-voltage installations |
| CN202917942U (en) * | 2012-10-24 | 2013-05-01 | 康迎利 | Surge protection device (SPD) dedicated security device |
| CN203398066U (en) * | 2013-08-15 | 2014-01-15 | 浙江新力熔断器有限公司 | Fuse body for protecting photovoltaic system |
| CN103915833A (en) * | 2014-03-11 | 2014-07-09 | 王统 | Safe anti-thunder device |
| CN204216561U (en) * | 2014-10-31 | 2015-03-18 | 王统 | A kind of safe lightning protection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638519B (en) * | 2015-03-17 | 2016-08-31 | 国网山东省电力公司烟台市牟平区供电公司 | There is heat radiation and the electric power facility lightning arrester of shock-absorbing function and using method thereof |
| CN105680436A (en) * | 2016-01-28 | 2016-06-15 | 佛山市浦斯电子有限公司 | Surge protection apparatus with power frequency overcurrent protection melt-contained independent cavities |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104362584B (en) | 2018-03-13 |
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