CN104362584B - A kind of safe lightning protection device - Google Patents
A kind of safe lightning protection device Download PDFInfo
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- CN104362584B CN104362584B CN201410606480.6A CN201410606480A CN104362584B CN 104362584 B CN104362584 B CN 104362584B CN 201410606480 A CN201410606480 A CN 201410606480A CN 104362584 B CN104362584 B CN 104362584B
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Abstract
The present invention refers in particular to a kind of safe lightning protection device, belong to thunder resisting equipment technical field, including box body, interior pumping case, thermal release device, MOV chips and fuse, interior pumping case is placed in box body, thermal release device is arranged in interior pumping case, and respectively with MOV chips, fuse connects, chip chamber and fuse chamber are provided with interior pumping case, MOV chips are arranged on chip intracavitary, fuse is arranged on fuse intracavitary, chip intracavitary is filled with thermal balance integument, MOV chips are wrapped in it by thermal balance integument, current limiting heat build-up storehouse is set in fuse, heat-dissipating storehouse and fuse, the space that the outer wall in current limliting heat build-up storehouse and the inwall of fuse are formed is heat-dissipating storehouse, heat sink material is filled with heat-dissipating storehouse, fuse runs through current limliting heat build-up storehouse and heat-dissipating storehouse.The present invention improves the puncture short electric current tolerance time of MOV chips and the disjunction response time of fuse, when being punctured by Frequency Transient Overvoltage, make lightning protection device will not flame, avoid causing bigger burning and fire.
Description
Technical field
The invention belongs to thunder resisting equipment technical field, be related to it is a kind of puncture under Frequency Transient Overvoltage state do not produce it is bright
Fiery and short blown fuse time lightning protection device, increase the lightning current through-current capacity of fuse while accelerate short circuit current fusing speed
The characteristics of degree, actual residual voltage are low, refers in particular to a kind of safe lightning protection device.
Background technology
The effect of lightning protection device is for protecting in low-voltage distribution system various electric equipments from lightning surge, operating
A kind of protection electrical equipment that voltage, Frequency Transient Overvoltage are impacted and damaged.
Existing lightning protection for power supply without band special fuse, is made with miniature circuit breaker or the separation of common fuse
With, tight fit can not be reached therebetween, at present by GB18802.1-2011 and IEC61643.11-2011 standard in city
The lightning protection device and fuse purchased on field are installed, the result in use:
(1) existing fuse uses copper or silver, in order to reach a bigger through-current capacity, it will usually increase fuse
Diameter, but fuse can not fuse rapidly again within the defined time in this case, cause lightning protection device flame, successional
Burning；Reduce the diameter of fuse, fusing time can be shortened, but big through-current capacity can not be obtained again, in technical indicator
Contradiction be present.
(2) fuse malfunction is made, and fuse has fused in the case of Lightning Over-voltage；The overvoltage of thunder and lightning is caused to invade
Enter circuit and equipment, cause to be damaged by protection equipment.
In addition, existing lightning protection device does not have MOV chips (voltage dependent resistor chip) hot equal when being punctured by Frequency Transient Overvoltage
Weigh device, makes lightning protection device that lasting flame occur and causes bigger burning and fire.Make circuit due to fuse is external
Distribution is long, and caused residual voltage ratio is higher between its both ends when causing the lightning discharge electric current to flow through lightning protection device.
The content of the invention
While improving MOV chip breakdown characteristics it is an object of the invention to provide one kind, when also improving fuse response
Between safe lightning protection device.
The object of the present invention is achieved like this：A kind of safe lightning protection device, including box body, interior pumping case, thermal release device,
MOV chips and fuse, the interior pumping case are placed in box body, and thermal release device is arranged in interior pumping case, and respectively with MOV cores
Piece, fuse connection, wherein, chip chamber and fuse chamber are provided with the interior pumping case, the MOV chips are arranged on chip chamber
Interior, described fuse is arranged on fuse intracavitary, and the chip intracavitary is filled with thermal balance integument, and thermal balance integument will
MOV chips are wrapped in it, and current limiting heat build-up storehouse, heat-dissipating storehouse and fuse, the current limliting heat build-up storehouse are set in the fuse
The space that is formed of inwall of outer wall and the fuse be heat-dissipating storehouse, the heat-dissipating storehouse is interior to be filled with heat sink material, the guarantor
Dangerous silk runs through the current limliting heat build-up storehouse and heat-dissipating storehouse.Fuse is set directly in box body, is shortened the wiring lengths of circuit, is carried
The high response time, while reduce residual voltage；And MOV chips are wrapped in it using thermal balance integument, when MOV chip quilts
When Frequency Transient Overvoltage punctures, spark is spurted, directly stopped by thermal balance integument, absorb, extend breakdown time, such as
This fuse in fuse, a part of heat sink material parcel by heat-dissipating storehouse, is timely radiated simultaneously, another part
In current limliting heat build-up storehouse, heat build-up is carried out, the temperature in current limliting heat build-up storehouse is improved, makes to form the temperature difference on fuse, by high temperature collection
In to fuse be in the part in current limliting heat build-up storehouse, carry out pinpointing local fusing, accelerate fusing speed, further improve when responding
Between, by extending breakdown time and improving the two-way function of response time, can meet to obtain larger through-current capacity, and can shortens
Fusing time, make naked light have little time to puncture box body, protect external equipment, substantially increase security performance.
Further optimize, be filled with heat build-up material in the current limliting heat build-up storehouse, the heat build-up material is asbestos, can be further
The heat build-up ability in current limliting heat build-up storehouse is improved, is rapidly heated and is reached the fusing point of fuse and accelerate to fuse.Also can filling liquid or gas
State heat build-up material.
Further optimize, the heat sink material in the thermal balance integument and heat-dissipating storehouse uses quartz sand or ceramics.Cause
Endothermic effect for quartz sand or ceramics is fine, and can stop contact of the spark with the external world completely, more preferable to eliminate faster
Spark, extend breakdown time, the material of certain thermal balance integument there are a variety of selections, for example the material of various heat absorptions of putting out a fire is equal
Can.
Further optimization, the thermal release device include connection sheet, thermal tripping lever and reset tension spring, the connection sheet one
End is connected with the MOV chips by alloy low temperature tin welding, the other end of the connection sheet with fuse.Using connection sheet,
The thermal release device that thermal tripping lever and reset tension spring are formed, when lightning protection device bulk temperature rising reaches 120K, the conjunction in connection sheet
Golden low temperature tin is influenceed to melt by temperature rise, is allowed thermal release device to act, is separated with distribution system, ensure that by the peace of protection equipment
Entirely, while reset tension spring shrinks, and thermal tripping lever is carried out deterioration instruction, as a physical degradation indicator, so as to improve
Overall security.Solve the matching relationship between fuse and lightning protection device by thermal release device, avoid fuse and exist
Malfunction caused by during Lightning Over-voltage, improve the response time of fuse, it is ensured that MOV chips and fuse are temporary in power frequency
Depart from rapidly during state overvoltage, disjunction, Lightning Over-voltage is limited by lightning protection device.
Further optimize, deterioration instruction modular converter, the deterioration instruction modular converter are additionally provided with the interior pumping case
On be provided with instruction diode, the deterioration instruction modular converter is connected with the both ends of the fuse.Indicated in physical degradation
While device, there is provided an electronics to deteriorate indicator, when fuse does not fuse, because deterioration instruction modular converter connects
At the both ends of fuse, the balance of voltage, voltage difference not being produced, instruction diode does not work, when fuse blows, fuse
Both ends just generate voltage difference, deterioration instruction modular converter produces electric current, and instruction diode lights, and does the instruction deteriorated, structure
Indicator is deteriorated into an electronics, is coordinated with physical degradation indicator, more accurately, carries out deterioration instruction, the convenient people that works comprehensively
Member observes and judged deterioration state.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：Improve the puncture short electric current of MOV chips
The disjunction response time of tolerance time and fuse, when being punctured by Frequency Transient Overvoltage, make lightning protection device will not flame, avoid
Cause bigger burning and fire.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 left view schematic diagram；
Fig. 3 is Fig. 1 schematic top plan view；
Fig. 4 is the test waveform figure that the present invention embodies MOV chips limitation voltage 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 bodys, pumping case in 11-, 12- thermal release devices, 13-MOV chips, 14- fuses, 15- chip chambers,
16- fuse chambers, 17- thermal balance integuments, 18- current limliting heat build-ups storehouse, 19- heat-dissipating storehouses, 20- fuses, 21- connection sheets, 22- heat
Dropout lever, 23- reset tension springs, 24- deterioration instruction modular converters, 25- instruction diodes, 26- conductive inserts I, 27- is conductive to be inserted
Piece II.
Embodiment
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings, referring to Fig. 1-6：A kind of safe lightning protection
Device, including box body 10, interior pumping case 11, thermal release device 12, MOV chips 13 and fuse 14, the interior pumping case 11 are placed in box
In body 10, thermal release device 12 is arranged in interior pumping case 11, and is connected respectively with MOV chips 13, fuse 14, the outside of box body 10
Conductive insert I 26 and conductive insert II 27 are provided with, wherein, chip chamber 15 and fuse chamber 16 are provided with the interior pumping case 11,
The MOV chips 13 are arranged in chip chamber 15, the fuse 14 is arranged in fuse chamber 16, are filled out in the chip chamber 15
Thermal balance integument 17 is filled, MOV chips 13 are wrapped in it by thermal balance integument 17, are set in the fuse 14 limited
Stream heat build-up storehouse 18, heat-dissipating storehouse 19 and fuse 20, the inwall of the outer wall in the current limliting heat build-up storehouse 18 and the fuse 14 are formed
Space be heat-dissipating storehouse 19, the current limliting heat build-up storehouse 18 is filled with heat build-up material, and the heat build-up material is asbestos, can further be carried
The heat build-up ability in high current limliting heat build-up storehouse 18, it is rapidly heated and reaches the fusing point of fuse 20 and accelerate to fuse, in the heat-dissipating storehouse 19
Filled with heat sink material.Heat sink material in the thermal balance integument 17 and heat-dissipating storehouse 19 uses quartz sand, because quartzy
The endothermic effect of sand is fine, and can stop contact of the spark with the external world completely, more preferable faster blowout of spark, extends breakdown
Time.The fuse 20 runs through the current limliting heat build-up storehouse 18 and heat-dissipating storehouse 19.Fuse 14 is set directly in box body 10, contracting
The short wiring lengths of circuit, improve the response time, while reduce residual voltage；And thermal balance integument 17 is utilized by MOV cores
Piece 13 is wrapped in it, when MOV chips 13 are punctured by Frequency Transient Overvoltage, spark is spurted, directly by thermal balance bag
Covering layer 17 stops, absorbed, and extends breakdown time, and so simultaneously, the fuse 20 in fuse 14, a part is by heat-dissipating storehouse 19
Heat sink material is wrapped up, and is timely radiated, and another part is in current limliting heat build-up storehouse 18, carries out heat build-up, improves current limliting heat build-up
Temperature in storehouse 18, make to form the temperature difference on fuse 20, high temperature focused on into the part that fuse 20 is in current limliting heat build-up storehouse 18,
Carry out pinpointing local fusing, accelerate fusing speed, further improve the response time, when being responded by extending breakdown time and improving
Between two-way function, make naked light have little time puncture box body 10, protect external equipment, substantially increase security performance.Such as Fig. 4-6
It is shown, it is experimental test oscillogram of the present invention and data result, SPD (lightning protection device) of the present invention is pacified by voltage 800V electric currents 100
The tolerance time of MOV chips reaches 200 to 400 milliseconds, up to 867.2 milliseconds during training, and the short circuit of fuse body of the present invention
Fusing time is most long 1545.9 to 1067.9 milliseconds, most reaches 437.3 milliseconds soon.Reach the property of SPD (lightning protection device) safety requirements
Can, the present invention can be effectively used for all power network lines, and backing is done to power network and people's property safety.
The thermal release device 12 includes connection sheet 21, thermal tripping lever 22 and reset tension spring 23, the connection sheet 21 1
End is connected with the MOV chips 13 by alloy low temperature tin welding, the other end of the connection sheet 21 with fuse 14.Using even
The thermal release device 12 that contact pin 21, thermal tripping lever 22 and reset tension spring 23 are formed, when lightning protection device bulk temperature rising reaches 120K,
Alloy low temperature tin in connection sheet 21 is influenceed to melt by temperature rise, is allowed thermal release device 12 to act, is separated with distribution system, be ensure that
By the safety of protection equipment, while reset tension spring 23 shrinks, and thermal tripping lever 22 is carried out deterioration instruction, bad as a physics
Change indicator, so as to improve overall security.Solve matching somebody with somebody between fuse 14 and lightning protection device by thermal release device 12
Conjunction relation, avoid fuse 14 and malfunctioned caused by Lightning Over-voltage, improve the response time of fuse 14, it is ensured that
MOV chips 13 and fuse 14 depart from rapidly in Frequency Transient Overvoltage, disjunction, and Lightning Over-voltage is limited by lightning protection device.
Deterioration instruction modular converter 24 is additionally provided with the interior pumping case 11, is set on the deterioration instruction modular converter 24
There is instruction diode 25, the deterioration instruction modular converter 24 is connected with the both ends of the fuse 14.Indicated in physical degradation
While device, there is provided an electronics to deteriorate indicator, when fuse 14 does not fuse, because deterioration indicates modular converter
24 are connected on the both ends of fuse 14, the balance of voltage, do not produce voltage difference, instruction diode 25 does not work, and is fused when fuse 14
When, the both ends of fuse 14 just generate voltage difference, and deterioration instruction modular converter 24 produces electric current, and instruction diode 25 is bright
Rise, do the instruction deteriorated, form an electronics deterioration indicator, coordinate with physical degradation indicator, carry out more accurately, comprehensively bad
Change instruction, facilitate staff to observe and judge deterioration state.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, all should be covered by within protection scope of the present invention.
Claims (3)
1. a kind of safe lightning protection device, including box body, interior pumping case, thermal release device, MOV chips and fuse, the interior pumping case
It is placed in box body, thermal release device is arranged in interior pumping case, and is connected respectively with MOV chips, fuse, it is characterised in that：Institute
State and chip chamber and fuse chamber are provided with interior pumping case, the MOV chips are arranged on chip intracavitary, the fuse is arranged on fusing
Device intracavitary, the chip intracavitary are filled with thermal balance integument, and MOV chips are wrapped in it by thermal balance integument, described molten
Current limiting heat build-up storehouse, heat-dissipating storehouse and fuse, the outer wall in the current limliting heat build-up storehouse and the inwall of the fuse are set in disconnected device
The space of formation is heat-dissipating storehouse, be filled with heat sink material in the heat-dissipating storehouse, the fuse through the current limliting heat build-up storehouse with
Heat-dissipating storehouse；Heat build-up material is filled with the current limliting heat build-up storehouse, the heat build-up material is asbestos；The thermal balance integument and dissipate
Heat sink material in hot storehouse uses quartz sand.
2. safe lightning protection device according to claim 1, it is characterised in that：The thermal release device includes connection sheet, heat
Dropout lever and reset tension spring, described connection sheet one end and the MOV chips by alloy low temperature tin welding, the connection sheet
The other end is connected with fuse.
3. safe lightning protection device according to claim 1 or 2, it is characterised in that：Deterioration is additionally provided with the interior pumping case
Modular converter is indicated, instruction diode, the deterioration instruction modular converter and institute are provided with the deterioration instruction modular converter
State the both ends connection of 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104362584A CN104362584A (en) | 2015-02-18 |
| CN104362584B true CN104362584B (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410606480.6A Active CN104362584B (en) | 2014-10-31 | 2014-10-31 | A kind of safe lightning protection device |
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Families Citing this family (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 |
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 |
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| Publication number | Publication date |
|---|---|
| CN104362584A (en) | 2015-02-18 |
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