CN201478825U - Power supply over voltage protection module for multi-gap metal gas discharge tube - Google Patents
Power supply over voltage protection module for multi-gap metal gas discharge tube Download PDFInfo
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- CN201478825U CN201478825U CN2009203042195U CN200920304219U CN201478825U CN 201478825 U CN201478825 U CN 201478825U CN 2009203042195 U CN2009203042195 U CN 2009203042195U CN 200920304219 U CN200920304219 U CN 200920304219U CN 201478825 U CN201478825 U CN 201478825U
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- gas discharge
- discharge tube
- metal gas
- power supply
- gap metal
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Abstract
The utility model relates to a power supply over voltage protection module for a multi-gap metal ceramic gas discharge tube (hereinafter referred to as M-GDT), which is mainly formed by an M-GDT. A terminal electrode A of the M-GDT is conductively connected with a phase line L of a power supply; a terminal electrode A' of the M-GDT is conductively connected with a null line N or a protection earth line PE of the power supply; intermediate electrodes K1-Kn of the M-GDT are respectively conductively connected with one ends of metal oxide varistors MOV1-MOVn; and the other ends of the metal oxide varistors MOV1-MOVn are conductively connected with the terminal electrode A or the terminal electrode A' of the M-GDT. The power supply over voltage protection module for a multi-gap metal ceramic gas discharge tube has no safety hazards, high current capacity, no follow current, high reliability and stability.
Description
Technical field
The utility model relates to power-supply system overvoltage protection technology, relates in particular to multi-gap metal gas discharge tube (hereinafter to be referred as M-GDT) power supply over-voltage protection module.
Background technology
Lightning protection for power supply claims lightning arrester or Surge Protector again, is called for short SPD (SurgeProtection Device, Surge Protector), is made up of several over-voltage protection modules.Therefore, the performance of lightning protection for power supply depends on the performance of over-voltage protection module basically.The over-voltage protection module of each lightning protection for power supply is main at present is to adopt band heat to break away from the piezo-resistance (hereinafter to be referred as MOV) of alarm device ST or MOV and the single gap gas discharge tube GDT tandem compound that band heat breaks away from alarm device ST.
Above-mentioned existing over-voltage protection module has following shortcoming:
The MOV that breaks away from alarm device ST as Fig. 1, band heat directly is used in power supply phase line L to zero line N overvoltage protection, when the thunderbolt energy is excessive, MOV can burst, open failure appears, and can't start alarm, provide alarm signal, make power supply be in unshielded state, and remaining thunderbolt energy will damage power-supply device when bursting; When the energy of the switching overvoltage of power-supply system greatly when MOV can not consume, MOV is with puncture short because the energy that power-supply system provides is very huge, electric arc forms rapidly, release unit ST can't hightail and easily cause fire to take place this moment.
Break away from the MOV of alarm device ST and single gap gas discharge tube GDT tandem compound when directly being used in power supply phase line L as Fig. 2, band heat to zero line N overvoltage protection, because the through-flow energy of single gap gas discharge tube GDT of series connection reaches the existence of afterflow greatly, above-mentioned two kinds of situations can appear equally, because of there not being other replacement scheme, the overvoltage of always using MOV to protect power-supply system over year surplus in the of 40 is caving-in bash really.
The utility model content
The purpose of this utility model is to provide the M-GDT power supply over-voltage protection module, has potential safety hazard to solve existing lightning protection for power supply, has shortcomings such as afterflow.
In order to achieve the above object, M-GDT power supply over-voltage protection module of the present utility model adopts following technical scheme:
M-GDT power supply over-voltage protection module of the present utility model mainly is made up of M-GDT (being multi-gap metal gas discharge tube).The termination electrode A of described multi-gap metal gas discharge tube is connected with phase line of power L conduction, and the termination electrode A ' of multi-gap metal gas discharge tube is connected with the zero line N of power supply (or protection ground PE) conduction; Described multi-gap metal gas discharge tube comprises n target K1～Kn, wherein n=1; Described target K1～Kn is connected with piezo-resistance MOV1～MOVn conduction respectively, and the other end of piezo-resistance MOV1～MOVn is connected with the termination electrode A or the termination electrode A ' conduction of multi-gap metal gas discharge tube.
It is pointed out that the size of neglecting supply voltage greatly of n and decide (as: 50Hz AC 220V rms gets n=4).
Technique scheme is further set forth:
Be provided with three independent gaps between adjacent two electrodes of described M-GDT.
The termination electrode A ' of described M-GDT is equipped with hot release unit ST, and termination electrode A ' is connected with zero line N or protection ground PE by described hot release unit ST; When the temperature of the termination electrode A ' of multi-gap metal gas discharge tube reaches when breaking away from threshold values, described hot release unit ST breaks away from from termination electrode A ', thus the open end electrode A ' be connected with the conduction of zero line N (or protect PE).
One side of described hot release unit is provided with sensitive switch SW, and described sensitive switch SW is associated with stand by lamp D, remote signalling interface E respectively; Start sensitive switch SW when described hot release unit ST breaks away from from termination electrode A ', when sensitive switch SW starts respectively to stand by lamp D, remote signalling interface E outputting alarm signal.
Described multi-gap metal gas discharge tube power supply over-voltage protection module also comprises circuits for triggering F, and described circuits for triggering F is connected between described termination electrode A and the termination electrode A '.
Described circuits for triggering F comprises transformer T, capacitor C 3, capacitor C 4, switching device Q, one end of the elementary winding of described transformer T is connected with the end conduction of the same name of secondary level winding through capacitor C 3, switching device Q, and the other end of the elementary winding of transformer T is connected with the end conduction of the same name of secondary level winding through capacitor C 4.
Described switching device Q includes but not limited to: two utmost point gas discharge tubes, Transient Suppression Diode, controllable silicon.
Multi-gap metal gas discharge tube power supply over-voltage protection module of the present utility model has following advantage:
By above technical scheme, the utility model does not have potential safety hazard, through-current capability is big, residual voltage is low, no afterflow, reliability height, good stability, has thoroughly solved Lightning Over-voltage, switching overvoltage and the superpotential protection question of electromagnetic pulse in DC48V, AC50Hz 110V, 220V, 380V, 440V or the like the power-supply system.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the circuit diagram of existing power supply over-voltage protection module;
Fig. 2 is the circuit diagram of another existing power supply over-voltage protection module;
Fig. 3 a is the circuit theory diagrams of the utility model first embodiment;
Fig. 3 b is the equivalent circuit diagram of Fig. 3 a;
Fig. 4 a is the circuit theory diagrams of the utility model second embodiment;
Fig. 4 b is the equivalent circuit diagram of Fig. 4 a;
Fig. 5 is the circuit theory diagrams of the utility model the 3rd embodiment;
Fig. 6 is the circuit theory diagrams of the utility model the 4th embodiment;
Fig. 7 is the circuit theory diagrams of circuits for triggering of the present utility model;
Fig. 8,9, the 10th, the physical circuit figure of circuits for triggering of the present utility model.
Embodiment
In order fully to disclose the technical solution of the utility model, be that those skilled in the art can realize the utility model, below in conjunction with accompanying drawing the utility model is described in detail.
Need to prove that the utility model has adopted novel M-GDT, comprise a target at least between two termination electrodes of this M-GDT, be provided with three independent gaps between two of this M-GDT adjacent electrodes simultaneously.
Referring to Fig. 3 a, be the circuit theory diagrams of the utility model first embodiment.The M-GDT power supply over-voltage protection module of present embodiment mainly is made up of M-GDT.The termination electrode A of described M-GDT is connected with phase line of power L conduction; the termination electrode A ' of M-GDT is connected with the zero line N of power supply or protection ground PE conduction; target K1～Kn of M-GDT is connected with the end conduction of MOV1～MOVn respectively, and the other end of MOV1～MOVn is connected with the termination electrode A ' conduction of M-GDT.
More specifically, the termination electrode A ' of described M-GDT is equipped with hot release unit ST, and termination electrode A ' is connected with zero line N or protection ground PE by described hot release unit ST; When the temperature of the termination electrode A ' of M-GDT reaches when breaking away from threshold values, described hot release unit ST breaks away from from termination electrode A ', thus the open end electrode A ' be connected with the conduction of zero line N (or protect PE).Simultaneously, the side of hot release unit ST is provided with sensitive switch SW, when breaking away from from termination electrode A ', hot release unit ST starts sensitive switch SW, described sensitive switch SW is associated with stand by lamp D, remote signalling interface E respectively, when sensitive switch SW starts respectively to stand by lamp D, remote signalling interface E outputting alarm signal.
Referring to Fig. 3 b is the equivalent circuit diagram of Fig. 3 a, its operation principle is as follows: when the circuit of Fig. 3 a is in off position, M-GDT is equivalent to capacitor C 1 series connection that n capacitance equates, MOV1～MOVn is equivalent to the capacitor C 2 that n capacitance equates, wherein C2 is far longer than C1.When pulse surge is invaded between the power supply L-N, because the dividing potential drop effect A-K1 gap of electric capacity is by MOV1 conducting in advance, short time voltage after the conducting of A-K1 gap between L-N is interior by the MOV1 clamper, because the arc light pressure drop of A-K1 is low, voltage on the MOV1 will start successively K1-K2, K2-K3, K3-K4 ..., Kn-A ' the gap, whole M after the conducting of Kn-A ' gap-GDT conducting, be lower than the pressure sensitive voltage of MOV1～MOVn after whole M-GDT conducting owing to the voltage of keeping M-GDT arc discharge between A-A ', MOV1～MOVn quits work, the overcurrent M-GDT that all flows through.Later because the crest voltage of power supply is lower than the voltage of keeping the M-GDT arc discharge, M-GDT's pulse surge quits work and blow-out, returns to non-conductive state.
Referring to Fig. 4 a is the circuit theory diagrams of the utility model second embodiment.The difference of the present embodiment and first embodiment is, the other end of the described MOV1～MOVn that is connected with the M-GDT conduction is connected with the termination electrode A conduction of M-GDT, its operation principle and first is implemented to be equal to, A '-K1, K1-K2, K2-K3, K3-K4 ..., Kn-A conducting successively.
Particularly, the M-GDT shown in Fig. 4 a in the present embodiment comprises target K1～Kn, and described target K1～Kn is respectively with MOV1～the MOVn conduction is connected, and the other end of MOV1～MOVn is connected with the termination electrode A of M-GDT.Simultaneously; hot release unit ST is installed on the termination electrode A ' of described M-GDT; when the temperature of the termination electrode A ' of M-GDT reaches when breaking away from threshold values; described hot release unit ST breaks away from from termination electrode A '; thereby open end electrode A ' be connected with the conduction of zero line N (or protection ground PE), thereby as having realized protecting the purpose of follow-up power consumption equipment.
Side as hot release unit ST as described in Fig. 3 b, the 4b is provided with sensitive switch SW, E is related with stand by lamp D, remote signalling interface respectively for described sensitive switch SW, start sensitive switch SW when hot release unit ST breaks away from from termination electrode A ', when sensitive switch SW starts respectively to stand by lamp D, remote signalling interface E outputting alarm signal.In specific implementation, described hot release unit ST can be a spring leaf, and an end of this spring leaf is welded on the termination electrode A ' of multi-clearance ceramet gas discharge tube with solder (as tin).When the temperature of multi-clearance ceramet gas discharge tube termination electrode A ' reached the fusing point of scolder, spring leaf broke away from from the termination electrode A ' of multi-clearance ceramet gas discharge tube.Spring leaf from A ' thus sensitive switch SW exerted pressure when breaking away from and starts sensitive switch SW.Respectively to stand by lamp D, remote signalling interface E outputting alarm signal, stand by lamp D was reddened by green after sensitive switch SW started, and remote signalling interface E sends alarm signal to long distance control system.
Need to prove that hot release unit ST and sensitive switch SW are interaction relations, before ST broke away from from A ', the closed SW1-2 of SW1-1 disconnected, and green indicating lamp LED1 is bright, and the closed SW2-2 of SW2-1 disconnects, and remote signalling interface E does not have signal output; After ST broke away from from A ', SW1-1 disconnected the SW1-2 closure, and red led LED2 is bright, and SW2-1 disconnects the SW3-2 closure, and remote signalling interface E has signal output.
Discharge tube adopts multi-clearance ceramet gas discharge tube in the utility model, being equivalent to a plurality of discharge tube series connection uses, gap A-K1, the K1-K2 of discharge tube adjacent electrode ..., Kn-A ' (or A '-K1, K1-K2 ..., Kn-A) conducting successively, its deboost is equivalent to the interelectrode pulse breakdown voltage of A-K1, thereby residual voltage is quite low.Simultaneously, overvoltage M-GDT later returns to not on-state rapidly and the afterflow phenomenon can not occur, thus the reliability, stability and the fail safe that have improved the multi-gap metal gas discharge tube power supply over-voltage protection module.Simultaneously, hot release unit SW is installed on the termination electrode A ' of M-GDT, its objective is the fail safe of further raising multi-gap metal gas discharge tube power supply over-voltage protection module, to avoid beyond thought adverse consequences, as fire etc.Devices such as sensitive switch SW, remote signalling interface E, stand by lamp D make the staff can find in time that abnormal conditions appear in over-voltage protection module, and in time it are keeped in repair, in order to avoid follow-up power consumption equipment suffers damage.
Referring to Fig. 5 is the circuit theory diagrams of the utility model the 3rd embodiment, and present embodiment has increased circuits for triggering F on the basis of first embodiment.These circuits for triggering F is connected between the A end and A ' end of multi-gap metal gas discharge tube, and wherein the G of circuits for triggering F end is connected with described A end conduction, and the H end is connected with described A ' end conduction.
As shown in Figure 7, be the circuit theory diagrams of circuits for triggering F.Circuits for triggering F comprises transformer T, capacitor C 3, capacitor C 4, switching device Q, one end of the elementary winding of described transformer T is connected with the end conduction of the same name of secondary level winding through capacitor C 3, switching device Q, and the other end of the elementary winding of transformer T is connected with the end conduction of the same name of secondary level winding through capacitor C 4.In the time of between the overvoltage invasion A-A '; before M-GDT does not also have conducting in addition A-K1 (A '-before K1) gap does not also have conducting; overvoltage is at first by switching device Q, capacitor C 3, the conducting of the secondary level of transformer T winding; thereby improved the corresponding speed of over-voltage protection module; its deboost is equivalent to the puncture voltage of switching device Q simultaneously; thereby can further reduce residual voltage, in order to avoid residual voltage is destroyed follow-up power consumption equipment.
In specific implementation, described switch element Q can be two utmost point gas discharge tubes, Transient Suppression Diode, controllable silicon, can also be other switching devices simultaneously.As shown in Figure 8, switch element Q is two utmost point gas discharge tube GDT; As shown in Figure 9, switch element Q is Transient Suppression Diode TVS; As shown in figure 10, switch element Q is a controllable silicon SCR.
Referring to Fig. 6 is the circuit theory diagrams of the utility model the 4th embodiment, and present embodiment has increased on the basis of second embodiment and Power Generation Road F.These circuits for triggering F is connected between the A end and A ' end of multi-gap metal gas discharge tube, and wherein the G of circuits for triggering F end is connected with described A end conduction, and the H end is connected with described A ' end conduction.
The circuits for triggering F of present embodiment has identical internal circuit with the circuits for triggering F of the 3rd embodiment, and its operation principle is identical and have identical beneficial effect, is not repeated in this description here.
Multi-clearance ceramet gas discharge tube power supply over-voltage protection module of the present utility model has reduced security against fire hidden danger, low, the no afterflow of residual voltage, and reliability height, good stability can protect follow-up power consumption equipment not damaged by overvoltage to greatest extent simultaneously.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.
Claims (7)
1. multi-gap metal gas discharge tube power supply over-voltage protection module, it is characterized in that: mainly form by multi-gap metal gas discharge tube, the termination electrode of described multi-gap metal gas discharge tube (A) is connected with phase line of power (L) conduction, and the termination electrode of multi-gap metal gas discharge tube (A ') be connected with the zero line (N) or protection ground (PE) conduction of power supply; Described multi-gap metal gas discharge tube comprises n target (K1～Kn), wherein n 〉=1; ((MOV1～MOVn) conduction is connected described target, and piezo-resistance (MOV1～other end MOVn) and the termination electrode of multi-gap metal gas discharge tube (A) or termination electrode (A ') is conducted electricity and is connected with piezo-resistance respectively for K1～Kn).
2. multi-gap metal gas discharge tube power supply over-voltage protection module as claimed in claim 1 is characterized in that: be provided with three independent gaps between adjacent two electrodes of described multi-gap metal gas discharge tube.
3. multi-gap metal gas discharge tube power supply over-voltage protection module as claimed in claim 1 or 2, it is characterized in that: the termination electrode of described multi-gap metal gas discharge tube (A ') is equipped with hot release unit (ST), termination electrode (A ') by described hot release unit (ST) and zero line (N) or protection (PE) be connected; When the temperature of the termination electrode of multi-gap metal gas discharge tube (A ') reaches when breaking away from threshold values, described hot release unit (ST) breaks away from from termination electrode (A '), thus open end electrode (A ') and zero line (N) or protect the conduction of (PE) be connected.
4. multi-gap metal gas discharge tube power supply over-voltage protection module as claimed in claim 3 is characterized in that:
One side of described hot release unit is provided with sensitive switch (SW), and described sensitive switch (SW) is associated with stand by lamp (D), remote signalling interface (E) respectively;
Described hot release unit (ST) starts sensitive switch (SW) when termination electrode (A ') breaks away from, when sensitive switch (SW) starts respectively to stand by lamp (D), remote signalling interface (E) outputting alarm signal.
5. multi-gap metal gas discharge tube power supply over-voltage protection module as claimed in claim 3 is characterized in that:
Described multi-gap metal gas discharge tube power supply over-voltage protection module also comprises circuits for triggering (F), and described circuits for triggering (F) are connected between described termination electrode (A) and the termination electrode (A ').
6. multi-gap metal gas discharge tube power supply over-voltage protection module as claimed in claim 5 is characterized in that:
Described circuits for triggering (F) comprise transformer (T), electric capacity (C3), electric capacity (C4), switching device (Q), one end of the elementary winding of described transformer (T) is connected with the end conduction of the same name of secondary level winding through electric capacity (C3), switching device (Q), and the other end of the elementary winding of transformer (T) is connected with the end conduction of the same name of secondary level winding through electric capacity (C4).
7. multi-gap metal gas discharge tube power supply over-voltage protection module as claimed in claim 6 is characterized in that:
Described switching device (Q) includes but not limited to: two utmost point gas discharge tubes, Transient Suppression Diode, controllable silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203042195U CN201478825U (en) | 2009-06-10 | 2009-06-10 | Power supply over voltage protection module for multi-gap metal gas discharge tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009203042195U CN201478825U (en) | 2009-06-10 | 2009-06-10 | Power supply over voltage protection module for multi-gap metal gas discharge tube |
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| CN201478825U true CN201478825U (en) | 2010-05-19 |
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| CN2009203042195U Expired - Fee Related CN201478825U (en) | 2009-06-10 | 2009-06-10 | Power supply over voltage protection module for multi-gap metal gas discharge tube |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752858B (en) * | 2009-06-10 | 2012-02-29 | 东莞市新铂铼电子有限公司 | Multi-gap metal gas discharge tube power supply over-voltage protection module |
| CN102522737A (en) * | 2011-12-06 | 2012-06-27 | 西安交通大学 | Multi-gap overvoltage protection device with ignition electrodes in vacuum environment |
| CN102986107A (en) * | 2010-11-08 | 2013-03-20 | 深圳市盾牌防雷技术有限公司 | Surge protection device using metal oxide varistors (MOVs) as the active energy control multiple gap discharging chain |
| CN103444022A (en) * | 2011-03-18 | 2013-12-11 | 德恩及索恩两合股份有限公司 | Spark gap with a plurality of series-connected single spark gaps in a stacked configuration |
| CN103915831A (en) * | 2013-01-05 | 2014-07-09 | 中国铁道科学研究院 | Lightening protection module and lightening protection device |
| CN104283203A (en) * | 2014-10-09 | 2015-01-14 | 东莞市新铂铼电子有限公司 | Pre-ionization over-voltage protection device for multi-gap metal ceramic gas discharge tube |
| CN104377551A (en) * | 2014-11-21 | 2015-02-25 | 南京信息工程大学 | Gas discharge tube with trigger electrodes |
| CN104578071A (en) * | 2014-12-26 | 2015-04-29 | 东莞市华炜雷电防护设备有限公司 | High-energy filtering protector |
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2009
- 2009-06-10 CN CN2009203042195U patent/CN201478825U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752858B (en) * | 2009-06-10 | 2012-02-29 | 东莞市新铂铼电子有限公司 | Multi-gap metal gas discharge tube power supply over-voltage protection module |
| CN102986107A (en) * | 2010-11-08 | 2013-03-20 | 深圳市盾牌防雷技术有限公司 | Surge protection device using metal oxide varistors (MOVs) as the active energy control multiple gap discharging chain |
| CN102986107B (en) * | 2010-11-08 | 2016-06-01 | 深圳市盾牌防雷技术有限公司 | Surge protective device |
| CN103444022A (en) * | 2011-03-18 | 2013-12-11 | 德恩及索恩两合股份有限公司 | Spark gap with a plurality of series-connected single spark gaps in a stacked configuration |
| CN103444022B (en) * | 2011-03-18 | 2015-08-26 | 德恩及索恩两合股份有限公司 | Spark gap with a plurality of series-connected single spark gaps in a stacked configuration |
| CN102522737A (en) * | 2011-12-06 | 2012-06-27 | 西安交通大学 | Multi-gap overvoltage protection device with ignition electrodes in vacuum environment |
| CN103915831A (en) * | 2013-01-05 | 2014-07-09 | 中国铁道科学研究院 | Lightening protection module and lightening protection device |
| CN103915831B (en) * | 2013-01-05 | 2016-11-23 | 中国铁道科学研究院 | Lightning-protection module and lightning protection device |
| CN104283203A (en) * | 2014-10-09 | 2015-01-14 | 东莞市新铂铼电子有限公司 | Pre-ionization over-voltage protection device for multi-gap metal ceramic gas discharge tube |
| CN104283203B (en) * | 2014-10-09 | 2017-08-25 | 东莞市新铂铼电子有限公司 | Preionization multi-clearance ceramet gas discharge tube overvoltage protection |
| CN104377551A (en) * | 2014-11-21 | 2015-02-25 | 南京信息工程大学 | Gas discharge tube with trigger electrodes |
| CN104578071A (en) * | 2014-12-26 | 2015-04-29 | 东莞市华炜雷电防护设备有限公司 | High-energy filtering protector |
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