CN107919661A - A kind of modular Surge Protector - Google Patents
A kind of modular Surge Protector Download PDFInfo
- Publication number
- CN107919661A CN107919661A CN201711464623.4A CN201711464623A CN107919661A CN 107919661 A CN107919661 A CN 107919661A CN 201711464623 A CN201711464623 A CN 201711464623A CN 107919661 A CN107919661 A CN 107919661A
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- China
- Prior art keywords
- discharging gap
- current
- connection terminal
- gap
- wire connection
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of modular Surge Protector, it includes the first wire connection terminal, the second wire connection terminal and at least two discharging gaps, and the first wire connection terminal is connected with the second wire connection terminal by discharging gap；When there is overvoltage electric current or lightning current and magnitude of voltage reaches the threshold voltage of discharging gap, the circuit turn-on electric current between the first wire connection terminal and the second wire connection terminal is set to pass through;Wherein, detection control module, adjusting mechanism and arc-extinguish chamber are further included；At least one discharging gap is adjustable discharging gap, remaining is that discharging gap is fixed interval (FI)；When detection control module whether there is electric current for detection circuit, there is the gap then controlled to adjust between the adjustable discharging gap of mechanism increase if any electric current；Such as no current presence, adjusting mechanism controls adjustable discharging gap to restore to the original state；Arc-extinguish chamber is located above adjustable discharging gap；The present invention has the characteristics that the surge protection device (spd) that dependable performance, cost are low, easy for installation.
Description
Technical field
The present invention relates to a kind of modular Surge Protector.
Background technology
The thunder and lightning of transmission line of electricity prevents often being divided into A, B, C and D grades of protections, enters electrical equipment since A grades of circuits are in thunder and lightning
Front end, therefore carry powerful lightning impulse current, therefore Electronic Protection device is not suitable for A grades of lightning protection,
Fixed type air gap protection device lightning protection largely is used, but the maximum deficiency of fixed type air gap protection device is exactly:Gap
Discharge voltage is up to more than 6KV and does not have protecting effect when excessive, and power frequency continues electric current and just can not reliably cut when gap is too small
Disconnected, it is power current to continue electric current herein, causes front end air switch trip or causes fire incident.
Therefore, those skilled in the art are badly in need of researching and developing a surge protection device (spd) that can adjust discharging gap.
The content of the invention
The invention mainly solves the technical problem of providing a kind of surge protection device (spd) that can adjust discharging gap.
Technical solution is used by the present invention solves its technical problem：A kind of modular Surge Protector, it includes
First wire connection terminal, the second wire connection terminal and at least two discharging gaps, the first wire connection terminal pass through with the second wire connection terminal
Discharging gap is connected；When there is overvoltage electric current or lightning current and magnitude of voltage reaches the threshold voltage of discharging gap, make first
Circuit turn-on electric current between wire connection terminal and the second wire connection terminal is passed through;Wherein, further include detection control module, adjust
Mechanism and arc-extinguish chamber；At least one discharging gap is adjustable discharging gap, remaining is that discharging gap is fixed interval (FI)；Detection control
When molding block whether there is electric current for detection circuit, exist if any electric current then control to adjust mechanism increase adjustable discharging gap it
Between gap；Such as no current presence, adjusting mechanism controls adjustable discharging gap to restore to the original state；Arc-extinguish chamber is located at adjustable discharging gap
Top.
The modular Surge Protector of said structure is connected in circuit, when lightning current or overvoltage electric current should occur,
Its magnitude of voltage exceedes the threshold values of discharging gap, and discharging gap conducting electric discharge, electric current can be let out to pass through discharging gap at this time
Put.At this time, detection control module is detected there are electric current in circuit, therefore meeting controling adjustment device is rapidly by adjustable discharging gap
Gap become larger, prevent power current enter occur power frequency continued flow, play the role of cut off power current, simultaneously because adjustable put
During progressively being become larger, electrical discharge arc, which is elongated to fall into, realizes arc extinguishing in arc-extinguish chamber in electric gap.Treat overvoltage electric current or
After lightning current disappears（I.e. no current exists）, regulating device drives adjustable discharge gap distance to restore to the original state, for mistake next time
Being protected again occur in voltage and current or lightning current.
Wherein, adjusting mechanism includes coil, pull rod and resetting apparatus, and an electrode of pull rod and adjustable discharging gap connects
Connect, coil is sheathed on pull rod；When, there are during electric current, detection control module control coil is powered, coil drive pull rod in circuit
The mobile gap increase for realizing adjustable discharging gap；When no current in circuit, resetting apparatus drives pull rod to reset.
Adopt the structure, when there are during electric current in circuit（That is lightning current or overvoltage electric current flows through）, detection control mould
Block control coil is powered, and coil produces magnetic field force so that pull rod moves, and the gap so as to fulfill adjustable discharging gap becomes larger, and hinders
Only power current, which enters, occurs power frequency continued flow, plays the role of cutting off power current.When the current vanishes, resetting apparatus band is utilized
Dynamic pull rod resets.Adopt the structure with being swift in response, and flowing through control can using lightning current or overvoltage electric current
Adjust discharging gap gap change, by such a structure can adjustable discharging gap distance change by discharge process
In independently realize.
Wherein, detection control module includes detection unit, control unit and switch element, and detection unit is used to detect electricity
It whether there is electric current in road；Coil is set to be powered by control unit driving switch unit when there is current flow, when no current, control
Coil blackout processed.
Wherein, detection device is mutual inductor, is set on the circuit that adjustable discharging gap is connected with fixed discharging gap.
Detected by mutual inductor, ensure the accuracy of detection data, prevent maloperation.
Wherein, switch element is transistor, and control module includes rectification unit, voltage regulation filtering unit and current limliting electricity
R5 is hindered, mutual inductor is in parallel with rectification unit, by voltage regulation filtering unit filtering, flows through the base of current-limiting resistance R5 and transistor
The collector of level connection, coil and transistor connects, the emitter ground connection of transistor.
Transistor is used as switch so that the performance on circuit is more stable, prevents error.
Wherein, switch element is field-effect tube, and control module includes rectification unit, voltage regulation filtering unit and current-limiting resistance
R5, the switch element are field-effect tube, and mutual inductor is in parallel with rectification unit, by voltage regulation filtering unit filtering, flows through current limliting
The grid level of resistance R5 and field-effect tube connects, and the drain of coil and field-effect tube connects, the source class ground connection of field-effect tube.
The setting of field-effect tube so that integrated circuit function is more stable.
Wherein, adjustable discharging gap includes first electrode and second electrode forms, and adjusting mechanism is fixed with first electrode
First electrode is driven to use so that adjustable discharging gap changes, second electrode is electrically connected with fixed discharging gap.
Wherein, the spacing between first electrode and second electrode is 0.5-2mm.
The section of spacing is set, in order to adapt to different degree of protection.
Wherein, the spacing of fixed discharging gap is 0.1-1mm.
Adopt the structure design so that the discharging gap has relatively low discharge voltage.
Wherein, resetting apparatus is spring, and spring is located in the hollow space of coil, and one end and the pull rod of spring offset.
Spring reaction is rapid, can improve the reset speed of pull rod, while spring is set using such a mode, can be reduced
Shared space.
Brief description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention 1；
Fig. 2 is the circuit diagram of the embodiment of the present invention 1；
Fig. 3 is the circuit diagram of the embodiment of the present invention 2.
Embodiment
Embodiment 1：
Referring to the drawings shown in 1-2, a kind of modular Surge Protector, including housing 10, the first wire connection terminal 1, the second terminals
Son 2, fixed discharging gap 3, adjustable discharging gap 4, adjusting mechanism 5, wiring board 6, detection device and arc-extinguish chamber 7, it is adjustable to put
Electric gap 4 includes first electrode 41 and second electrode 42, and the first wire connection terminal 1 is connected with first electrode 41, first connects herein
Line terminals 1 are specially A grades of circuit inputs；Second electrode 42 is fixed electrode, and second electrode 42 is connected with adjustable discharging gap 4,
Adjustable discharging gap 4 is connected with the second wire connection terminal, and first electrode 41 is moving electrode, first electrode 41 and second electrode 42 herein
Between spacing be 0.5-2mm, fixed discharging gap 3 be constant clearance, and specific value is set according to the actual requirements, is generally
A definite value between 0.1-1mm, discharging gap can be multiple to differ and be set to two herein.Arc-extinguish chamber 7 is between adjustable electric discharge
The top of gap 4, for arc extinguishing.
Fixed frame 11 is provided with housing 10, fixed frame 11 can be a part for housing 10.
Adjusting mechanism 5 is arranged on fixed frame 11, it includes coil 51 and pull rod 52, and pull rod 52 connects with first electrode 41
Connect, the action of coil 51 pulls pull rod 52, while drives first electrode 41 to act, and widens between first electrode 41 and second electrode 42
Gap, while resetting apparatus shrink, when coil 51 is failure to actuate, resetting apparatus reset so that first electrode 41 be returned to just
Beginning position, resetting apparatus is specially spring 9 herein, and spring 9 is located in the hollow space of coil 51, can be set in one on pull rod 52
End offsets with first electrode 41, and the other end offsets with fixed frame 9 or offsets with the capping of 4 end of coil.Spring 9 can also one
The end with pull rod 52 is held to offset, the other end offsets with fixed frame 9 or offsets with the capping of 4 end of coil.
Detection control module includes detection unit, control unit and switch element.
Detection unit, detection unit are specially mutual inductor 8, and mutual inductor 8, which is set in, adjusts discharging gap 4 and fixed discharging gap
On circuit between 3, when there is electric current to flow through, mutual inductor 8 produces sensing electric current.
Control unit 6 includes rectification unit 61, voltage regulation filtering unit 62 and current-limiting resistance R5.Switch element is specially crystalline substance
Body triode BG1, the first wire connection terminal are connected with resistance R1 and first electrode, and second electrode is connected with the second wire connection terminal,
The other end of resistance R1 is connected with resistance R2 and resistance R3, and the other end of resistance R3 is connected with the second wire connection terminal,
The other end of resistance R2 is connected with the cathode of resistance R4 and diode D3, the other end of resistance R4 and the second wire connection terminal
It is connected, the anode of diode D3 is connected with the cathode of one end of coil 51 and capacitance C2, the anode and power supply of capacitance C2
Second wire connection terminal is connected, and the other end of coil 51 is connected with the collector of transistor BG1, transistor BG1
Emitter be connected with the second wire connection terminal of power supply, mutual inductor 8 is in parallel with the first wire connection terminal of rectifier bridge D1, rectifier bridge
The anode of D1 is connected with the second wire connection terminal of power supply, the cathode of rectifier bridge D1 and the cathode of capacitance C1, resistance R5, resistance R6
And the anode of diode D2 is connected, the cathode of diode D2, the anode of capacitance C1 are connected with the second wire connection terminal of power supply
Connect, the other end of R5 is connected with the ground level of BG1.
Its specific operation principle is as follows, and when having lightning current or overvoltage electric current flows through, its magnitude of voltage is enough to hit at the same time
Fasten and determine discharging gap 3 and adjustable discharging gap 4, overcurrent is released over the ground, while detection device mutual inductor 8 detects electricity
The ac voltage signal sensed is transmitted to rectification unit and ac voltage signal is transformed to DC voltage letter by stream, mutual inductor 8
Number, transistor is provided by current limliting current-limiting resistance R5 after voltage regulation filtering unit and promotes voltage signal, transistor
BG1 conductings make coil 51 produce powerful electromagnetic field, and coil 51 is attracted so as to pull pull rod 52, and pull rod 52 is driven between adjustable electric discharge
The first electrode 41 of gap, moment elongate the gap of first electrode 41 and second electrode 42, and electric arc is introduced arc-extinguish chamber 7 so as to reach
To the purpose of arc extinguishing, meanwhile, prevent power current from flowing into circuit.
Embodiment 2：
Referring to the drawings shown in 3, difference lies in switch element is field-effect tube BG2, and current limliting is electric between embodiment 2 and embodiment 1
Resistance R5 is connected with the grid level of field-effect tube BG2, and coil 51 is connected with the drain of field-effect tube BG2, and the source class of field-effect tube BG2 connects
Ground.
Claims (10)
1. a kind of modular Surge Protector, it is included between the first wire connection terminal, the second wire connection terminal and at least two electric discharges
Gap, the first wire connection terminal are connected with the second wire connection terminal by discharging gap；When there is overvoltage electric current or lightning current and voltage
When value reaches the threshold voltage of discharging gap, enable the circuit turn-on electric current between the first wire connection terminal and the second wire connection terminal
Pass through;It is characterized in that：Further include detection control module, adjusting mechanism and arc-extinguish chamber；At least one discharging gap is adjustable
Discharging gap, remaining is that discharging gap is fixed interval (FI)；When detection control module whether there is electric current for detection circuit, if any
There is the gap then controlled to adjust between the adjustable discharging gap of mechanism increase in electric current；Such as no current presence, adjusting mechanism control can
Discharging gap is adjusted to restore to the original state；Arc-extinguish chamber is located above adjustable discharging gap.
A kind of 2. modular Surge Protector as claimed in claim 1, it is characterised in that：Adjusting mechanism includes coil, pull rod
And resetting apparatus, pull rod are connected with an electrode of adjustable discharging gap, coil is sheathed on pull rod；When there are electric current in circuit
When, detection control module control coil is powered, and the gap increase of adjustable discharging gap is realized in the movement of coil drive pull rod；Work as circuit
During middle no current, resetting apparatus drives pull rod to reset.
A kind of 3. modular Surge Protector as claimed in claim 2, it is characterised in that：Detecting control module includes detection list
Member, control unit and switch element, detection unit are used to whether there is electric current in detection circuit；Pass through control when there is current flow
Unit driving switch unit processed makes coil be powered, when no current, control coil power-off.
A kind of 4. modular Surge Protector as claimed in claim 3, it is characterised in that：Detection device is mutual inductor, is arranged
On the circuit that adjustable discharging gap is connected with fixed discharging gap.
A kind of 5. modular Surge Protector as claimed in claim 4, it is characterised in that：Switch element is transistor,
Control module includes rectification unit, voltage regulation filtering unit and current-limiting resistance R5, and mutual inductor is in parallel with rectification unit, passes through voltage stabilizing
Filtering unit filters, the ground level for flowing through current-limiting resistance R5 and transistor connect, and the collector of coil and transistor connects
Connect, the emitter ground connection of transistor.
A kind of 6. modular Surge Protector as claimed in claim 4, it is characterised in that：Switch element is field-effect tube, control
Molding block includes rectification unit, voltage regulation filtering unit and current-limiting resistance R5, and the switch element is field-effect tube, mutual inductor with
Rectification unit is in parallel, and by voltage regulation filtering unit filtering, the grid level for flowing through current-limiting resistance R5 and field-effect tube connects, coil and field
The drain connection of effect pipe, the source class ground connection of field-effect tube.
A kind of 7. modular Surge Protector as claimed in claim 1, it is characterised in that：Adjustable discharging gap includes the first electricity
Pole and second electrode composition, adjusting mechanism is fixed with first electrode drives first electrode to use so that adjustable discharging gap becomes
Change, second electrode is electrically connected with fixed discharging gap.
A kind of 8. modular Surge Protector as claimed in claim 8, it is characterised in that：Between first electrode and second electrode
Spacing be 0.5-2mm.
A kind of 9. modular Surge Protector as claimed in claim 1, it is characterised in that：The spacing of fixed discharging gap is
0.1-1mm。
A kind of 10. modular Surge Protector as claimed in claim 2, it is characterised in that：Resetting apparatus is spring, spring position
In the hollow space of coil, one end and the pull rod of spring offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464623.4A CN107919661B (en) | 2017-12-28 | 2017-12-28 | Modular surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464623.4A CN107919661B (en) | 2017-12-28 | 2017-12-28 | Modular surge protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107919661A true CN107919661A (en) | 2018-04-17 |
| CN107919661B CN107919661B (en) | 2024-07-02 |
Family
ID=61894409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711464623.4A Active CN107919661B (en) | 2017-12-28 | 2017-12-28 | Modular surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107919661B (en) |
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| CN104393489A (en) * | 2014-11-24 | 2015-03-04 | 南京信息工程大学 | Gas discharge tube with movable electrodes |
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| CN104361960A (en) * | 2014-12-02 | 2015-02-18 | 国家电网公司 | Parallel gap lightning protector with oscillating arm electrode |
| CN104716563A (en) * | 2015-03-24 | 2015-06-17 | 合肥南南电力保护设备有限公司 | Self-cutting follow current lightning arrester |
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| CN204928111U (en) * | 2015-08-14 | 2015-12-30 | 深圳康普盾科技股份有限公司 | SPD backup protection ware |
| CN105071363A (en) * | 2015-08-14 | 2015-11-18 | 深圳康普盾科技股份有限公司 | SPD backup protector |
| CN205943992U (en) * | 2016-08-01 | 2017-02-08 | 施耐德电器工业公司 | Two segmentation magnetism tripping device and including backup protection ware of this mechanism |
| CN106300241A (en) * | 2016-08-28 | 2017-01-04 | 安徽普天电力科技有限公司 | A kind of combination type low voltage Surge Protector |
| CN106329507A (en) * | 2016-10-15 | 2017-01-11 | 浙江雷源电气有限公司 | SCB (special circuit breaker) backup protector and control method thereof |
| CN206506291U (en) * | 2017-01-16 | 2017-09-19 | 厦门大恒科技有限公司 | The multistage gap of Surge Protector triggers circuit device step by step |
| CN106847431A (en) * | 2017-02-13 | 2017-06-13 | 广州中光电子科技有限公司 | A kind of lightning protection insulator departed from failure with aging identification function |
| CN107481817A (en) * | 2017-08-26 | 2017-12-15 | 苏州麦飞尔电子科技有限公司 | Utilize the lower electric discharge part in elastic conduction coil reset discharge gap |
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Country or region after: China Address after: No. 5 Shuangyu Road, Electronic Information Industry Park, Leqing Bay Port District, Leqing City, Wenzhou City, Zhejiang Province, 325609 Applicant after: Duoge Electric Co.,Ltd. Address before: No. 158 Liming East Road, Hongqiao Town, Leqing City, Wenzhou City, Zhejiang Province, 325608 Applicant before: ZHEJIANG DUOGE ELECTRONICS Co.,Ltd. Country or region before: China |
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