CN204559121U - A kind of current control component - Google Patents
A kind of current control component Download PDFInfo
- Publication number
- CN204559121U CN204559121U CN201520136926.3U CN201520136926U CN204559121U CN 204559121 U CN204559121 U CN 204559121U CN 201520136926 U CN201520136926 U CN 201520136926U CN 204559121 U CN204559121 U CN 204559121U
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- electromagnet
- tripping mechanism
- temperature coefficient
- current
- negative temperature
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Abstract
The utility model relates to lightning protection field, particularly relate to a kind of current control component, misoperation can be overcome in omnidistance lightning surge voltage range, comprise tripping mechanism, moving contact and fixed contact, also comprise discharging gap, negative temperature coefficient resistance and electromagnet, described electromagnet comprises electromagnet coil and dynamic iron core, described electromagnet coil is connected with negative temperature coefficient resistant series, described discharging gap is connected in parallel on described electromagnet coil and negative temperature coefficient resistance two ends, tripping mechanism and described moving contact link, when dynamic iron core action, described dynamic iron core clashes into tripping mechanism, described tripping mechanism makes moving contact and fixed contact become released state from contact condition after completing dropout.The utility model can solve the malfunction of electromagnet, and circuit is normally worked, logical lightning current, disconnected power current, thus plays the effect of protective circuit.
Description
Technical field
The utility model relates to lightning protection field, particularly relates to a kind of current control component, can overcome misoperation in omnidistance lightning surge voltage range.
Background technology
Thunder and lightning aloft to be discharged a kind of special weather phenomenon caused by charged cloud, be the major reason causing electronic equipment to damage, it threatens the safe and stable operation of the every field electronic informations such as post and telecommunications, electric power, railway, airport, petrochemical industry, industry control, military affairs.It is one of important measures of lightning protection that the metallic circuits such as the power line be connected with electronic equipment, holding wire and control line install surge protector (SPD).
Electric current useless in circuit can cause damage to electric equipment products, in the circuit being mixed with electromagnetic pulse electric current, lightning current, power current, direct current, some electric equipment products can only allow power current or direct current passes through, have only allow lightning current, electromagnetic pulse passes through.When only need lightning current and electromagnetic pulse electric current by time, AC and DC electric current is by causing damage even initiation fire to electric equipment; When only need AC and DC by time, lightning current and electromagnetic pulse electric current will to cause damage even initiation fire to electric equipment.Due to the restriction of acceptor sum through-current capability; filter can't be used merely at present to complete this task, therefore need to carry out extraction processing, when useless dangerous currents is passed through to useless dangerous currents signal; cut off current path by motion, reach protection object.
Lightning current surge voltage grade; in lightning protection device of the prior art; when the surge voltage of lightning current is not enough to conducting discharging gap; electromagnet branch road can only be passed through; when lightning current is greater than the drop-away time of tripping mechanism by the duration of electromagnet, cause switch opens, thus power line lightning protection circuit is cut off; equal the effect that circuit loses lightning protection, this is unallowable.So lightning protection device needs time delay feature when control, make lightning current when can not disruptive discharge gap, when flowing through electromagnet branch road, can clash into tripping mechanism in electromagnet action makes before it threads off, described lightning current can pass through thunder resisting equipment completely, so need to extend the time that tripping mechanism is clashed in electromagnet action.
Therefore, need to research and develop a kind of electric current and select by control assembly, have time delay feature when control electric current passes through, can solve and extend the problem that the tripping mechanism time is clashed in electromagnet action.
Utility model content
For overcoming the deficiencies in the prior art, the purpose of this utility model is: provide a kind of current control component, and this current control component, when by not malfunction during lightning current, solves latency issue.
In order to solve the technical problem in background technology, the utility model provides a kind of current control component, comprise tripping mechanism, moving contact and fixed contact, also comprise discharging gap, negative temperature coefficient resistance and electromagnet, described electromagnet comprises electromagnet coil and dynamic iron core, described moving contact, fixed contact, electromagnet coil and negative temperature coefficient resistance are arranged on the main circuit of current control component, described discharging gap is connected in parallel on described electromagnet coil and the negative temperature coefficient resistance two ends of connecting, tripping mechanism and described moving contact link, described negative temperature coefficient resistance is for extending the operate time of described dynamic iron core, when dynamic iron core action, described dynamic iron core clashes into tripping mechanism, described tripping mechanism makes moving contact and fixed contact become released state from contact condition after completing dropout.
Particularly, the drop-away time of described tripping mechanism is no less than 5 ms, and power current is greater than the drop-away time of described tripping mechanism by the duration of electromagnet coil, and lightning current is less than the drop-away time of described tripping mechanism by the duration of electromagnet coil.
Particularly, the room temperature resistance of described negative temperature coefficient resistance is 1 ~ 50.
Particularly, described electromagnet also comprises the return spring for returning to the front position of action after making iron core action.
Particularly, described discharging gap comprises two sparking electrodes, and each sparking electrode is provided with semicircle projection or plane electrode part, and described each sparking electrode opposes in opposite directions.
Particularly, described current control component also comprises end of incoming cables and leading-out terminal, and described end of incoming cables is connected with the moving contact of described discharging gap side, and described leading-out terminal is connected with the opposite side of described discharging gap.
Particularly, the puncture voltage of described discharging gap is greater than the induced potential that power current produces at described electromagnet coil two ends.
Particularly, described negative temperature coefficient resistance is connected with electromagnet coil, is arranged on that electromagnet coil is outside or electromagnet coil is inner.
The principle of a kind of current control component of the present utility model is 1. when the puncture voltage being greater than discharging gap by the lightning current surge voltage in circuit, and can form path in disruptive discharge gap, lightning current passes through from the branch road being provided with discharging gap; 2. when forming path in disruptive discharge gap by the lightning surge voltage in circuit, lightning current passes through from the branch road being provided with electromagnet, the electric current that the negative temperature coefficient resistance of connecting with electromagnet passes through is subject to negative temperature coefficient resistance to be affected and diminishes, magnetic field residing for electromagnet is died down, can not drive magnet action, energy ezpenditure is on negative temperature coefficient resistance, lightning current is because electric pressure is low, the lasting time is of short duration, energy shortage makes resistance decline to promote the rising of negative temperature coefficient resistance temperature, and electromagnet there will not be misunderstanding action; 3. when power current (or direct current) is not by forming path by disruptive discharge inter space device during circuit, electric current passes through from the branch road being provided with electromagnet.First stage: power current is subject to the impact of negative temperature coefficient resistive impedance, and power current (or direct current) value passed through is very little, and the magnetic field residing for electromagnet is died down, can not drive magnet action, and energy ezpenditure is on negative temperature coefficient resistance.Second stage: due to the continuous action of power current (or direct current), negative temperature coefficient resistance declines rapidly, and power current (or direct current) promotes the rapid action of electromagnet, when described tripping mechanism is threaded off, whole circuit disconnects, and power current (or direct current) is blocked.Negative temperature coefficient resistance now completes power current (or direct current) delay time could promote electromagnet psychomotor task.
Adopt technique scheme, the utility model has following beneficial effect: provide a kind of current control component, can solve the malfunction of electromagnet, and circuit is normally worked, logical lightning current, disconnected power current, thus plays the effect of protective circuit.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical solution of the utility model, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the profile in the current control component front that the utility model embodiment provides;
Fig. 2 is the profile at the current control component back side that the utility model embodiment provides;
Fig. 3 is the fundamental diagram of the current control component that the utility model embodiment provides;
Wherein, in figure, Reference numeral corresponds to: 1-end of incoming cables, 2-tripping mechanism, 3-electromagnet, 4-negative temperature coefficient resistance, 5-discharging gap, 6-leading-out terminal, and 8-is dynamic to get an electric shock, 9-static electric shock.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of the utility model protection.
The front cross-sectional view of a kind of current control component that embodiment 1: Fig. 1 provides for the utility model embodiment, Fig. 2 is the profile at a kind of current control component back side that the utility model embodiment provides, a kind of current control component can be clearly found out in figure, comprise tripping mechanism 2, moving contact 8 and fixed contact 9, also comprise discharging gap 5, negative temperature coefficient resistance 4 and electromagnet 3, described electromagnet 3 comprises electromagnet coil and dynamic iron core, described moving contact 8, fixed contact 9, electromagnet 3 and negative temperature coefficient resistance 4 are arranged on the main circuit of current control component, described discharging gap is connected in parallel on described electromagnet 3 and negative temperature coefficient resistance 4 two ends of connecting, tripping mechanism 2 and described moving contact 8 link, described negative temperature coefficient resistance 4(utilizes variations in temperature to change resistance) extend operate time of described dynamic iron core, when dynamic iron core action, described dynamic iron core clashes into tripping mechanism 2, moving contact 8 and fixed contact 9 is made to become released state from contact condition after described tripping mechanism 2 completes dropout.
Particularly, the drop-away time of described tripping mechanism 2 is no less than 5 ms, power current is greater than the drop-away time of described tripping mechanism 2 by the duration of electromagnet coil and negative temperature coefficient resistance, and lightning current is less than the drop-away time of described tripping mechanism 2 by the duration of electromagnet coil and negative temperature coefficient resistance.
Particularly, the room temperature resistance of described negative temperature coefficient resistance 4 is 10, and be applicable to power frequency supply voltage 220V system, 400V-1500V lightning surge voltage, electromagnet action power current or direct current are 3A.
Particularly, described electromagnet 3 also comprises the return spring for returning to the front position of action after making iron core action.
Particularly, described discharging gap 5 comprises two sparking electrodes, and each sparking electrode is provided with semicircle projection or plane electrode part, and described each sparking electrode opposes in opposite directions.
Particularly, described current control component also comprises end of incoming cables 1 and leading-out terminal 6, is connected to described electromagnet 3 and connects the two ends of current control component of negative temperature coefficient resistance 4.
Particularly, the puncture voltage of described discharging gap 5 is greater than the induced potential that power current produces at described electromagnet coil two ends.
Particularly, described negative temperature coefficient resistance 4 is connected on electromagnet coil outside.
Can be delicate to hundreds of microsecond time from tens to several ten thousand volts, duration by the lightning current surge voltage specification hundreds of of circuit, when being greater than the puncture voltage of discharging gap 5 by the lightning current surge voltage in circuit, can form path in disruptive discharge gap 5, lightning current passes through from the branch road being provided with discharging gap 5.When forming path in disruptive discharge gap 5 by the lightning current surge voltage in circuit, electric current passes through from the branch road being provided with electromagnet 3.The lightning current passed through in negative temperature coefficient resistance 4 branch road of connecting with electromagnet 3 diminishes, and because negative temperature coefficient resistance value makes the magnetic field residing for electromagnet 3 weak, is not enough to promote electromagnet 3 action.When power current is not by forming path in disruptive discharge gap 5 during circuit, electric current passes through from the branch road being provided with electromagnet 3, due to the duration of power current, negative temperature coefficient resistance 4 raises rapidly owing to absorbing energy temperature, the resistance of negative temperature coefficient resistance 4 diminishes rapidly close to zero, completing electromagnet can the time delay of action, power current can promote electromagnet rapidly, duration of power current clashes into much larger than dynamic iron core the time that tripping mechanism 2 makes it thread off, when described tripping mechanism 2 is threaded off, whole circuit disconnects, and power current is blocked.
The front cross-sectional view of a kind of current control component that embodiment 2: Fig. 1 provides for the utility model embodiment, Fig. 2 is the profile at a kind of electromagnet series connection subzero temperature resistor current control assembly back side that the utility model embodiment provides, a kind of electromagnet series connection subzero temperature resistor current control assembly clearly can be found out in figure, comprise tripping mechanism 2, moving contact 8 and fixed contact 9, also comprise discharging gap 5, negative temperature coefficient resistance 4 and electromagnet 3, described electromagnet 3 comprises electromagnet coil and dynamic iron core, described moving contact 8, fixed contact 9, electromagnet 3 and negative temperature coefficient resistance 4 are arranged on the main circuit of current control component, described discharging gap is connected in parallel on described electromagnet 3 and negative temperature coefficient resistance 4 two ends, tripping mechanism 2 and described moving contact 8 link, when dynamic iron core action, described dynamic iron core clashes into tripping mechanism 2, moving contact 8 and fixed contact 9 is made to become released state from contact condition after described tripping mechanism 2 completes dropout.
Particularly, the drop-away time of described tripping mechanism 2 is no less than 5 ms, power current is greater than the drop-away time of described tripping mechanism 2 by the duration of electromagnet coil and negative temperature coefficient resistance, and lightning current is less than the drop-away time of described tripping mechanism 2 by the duration of electromagnet coil and negative temperature coefficient resistance.
Particularly, the room temperature resistance of described negative temperature coefficient resistance 4 is 1, and be applicable to power frequency supply voltage 110V system, 250V-800V lightning surge voltage, electromagnet action power current or direct current are 0.3A.
Particularly, described electromagnet 3 also comprises the return spring for returning to the front position of action after making iron core action.
Particularly, described discharging gap 5 comprises two sparking electrodes, and each sparking electrode is provided with semicircle protrusion or plane electrode part, and described each sparking electrode opposes in opposite directions.
Particularly, described current control component also comprises end of incoming cables 1 and leading-out terminal 6, is connected to described electromagnet 3 and connects the two ends of current control component of negative temperature coefficient resistance 4.
Particularly, the puncture voltage of described discharging gap 5 is greater than the induced potential that power current produces at described electromagnet coil two ends.
Particularly, described negative temperature coefficient resistance 4 is connected on electromagnet coil outside.
When being greater than the puncture voltage of discharging gap 5 by the lightning current surge voltage in circuit, can form path in disruptive discharge gap 5, lightning current passes through from the branch road being provided with discharging gap 5.When forming path in disruptive discharge gap 5 by the lightning current in circuit, electric current passes through from the branch road being provided with electromagnet 3, the electric current that the branch road being provided with electromagnet 3 described in the negative temperature coefficient resistance 4 of connecting with electromagnet 3 makes passes through diminishes, magnetic field residing for electromagnet 3 is died down, is not enough to the action promoting electromagnet 3.Because the duration of power current is long, negative temperature coefficient resistance 4 raises owing to absorbing energy temperature, the resistance of negative temperature coefficient resistance 4 diminishes rapidly close to zero, duration of power current clashes into much larger than dynamic iron core the time that tripping mechanism 2 makes it thread off, when described tripping mechanism 2 is threaded off, whole circuit disconnects, and power current is blocked.
The front cross-sectional view of a kind of current control component that embodiment 3: Fig. 1 provides for the utility model embodiment, Fig. 2 is the profile at a kind of current control component back side that the utility model embodiment provides, a kind of electromagnet series connection subzero temperature resistor current control assembly clearly can be found out in figure, comprise tripping mechanism 2, moving contact 8 and fixed contact 9, also comprise discharging gap 5, negative temperature coefficient resistance 4 and electromagnet 3, described electromagnet 3 comprises electromagnet coil and dynamic iron core, described moving contact 8, fixed contact 9, electromagnet 3 and negative temperature coefficient resistance 4 are arranged on the main circuit of current control component, described discharging gap is connected in parallel on described electromagnet 3 and negative temperature coefficient resistance 4 two ends, tripping mechanism 2 and described moving contact 8 link, when dynamic iron core action, described dynamic iron core clashes into tripping mechanism 2, moving contact 8 and fixed contact 9 is made to become released state from contact condition after described tripping mechanism 2 completes dropout.
Particularly, the drop-away time of described tripping mechanism 2 is no less than 5 ms, power current is greater than the drop-away time of described tripping mechanism 2 by the duration of electromagnet coil and negative temperature coefficient resistance, and lightning current is less than the drop-away time of described tripping mechanism 2 by the duration of electromagnet coil and negative temperature coefficient resistance.
Particularly, the room temperature resistance of described negative temperature coefficient resistance 4 is 50, and be applicable to power frequency supply voltage 1000V system, 3000V-5000V lightning surge voltage, electromagnet action power current or direct current are 5A.
Particularly, described electromagnet 3 also comprises the return spring for returning to the front position of action after making iron core action.
Particularly, described discharging gap 5 comprises two sparking electrodes, and each sparking electrode is provided with semicircle projection or plane electrode part, and described each sparking electrode opposes in opposite directions.
Particularly, described a kind of current control component also comprises end of incoming cables 1 and leading-out terminal 6, is connected to described electromagnet 3 and connects the two ends of current control component of negative temperature coefficient resistance 4.
Particularly, the puncture voltage of described discharging gap 5 is greater than the induced potential that power current produces at described electromagnet coil two ends.
Particularly, described negative temperature coefficient resistance 4 is connected on electromagnet coil outside.
When being greater than the puncture voltage of discharging gap 5 by the lightning current surge voltage in circuit, can form path in disruptive discharge gap 5, lightning current passes through from the branch road being provided with discharging gap 5.When forming path in disruptive discharge gap 5 by the lightning current in circuit, electric current passes through from the branch road being provided with electromagnet 3, the electric current that the branch road being provided with electromagnet 3 described in the negative temperature coefficient resistance 4 of connecting with electromagnet 3 makes passes through diminishes, magnetic field residing for electromagnet 3 is died down, is not enough to the action promoting electromagnet 3.Because the duration of power current is long, negative temperature coefficient resistance 4 raises owing to absorbing energy temperature, the resistance of negative temperature coefficient resistance 4 diminishes rapidly close to zero, duration of power current clashes into much larger than dynamic iron core the time that tripping mechanism 2 makes it thread off, when described tripping mechanism 2 is threaded off, whole circuit disconnects, and power current is blocked.
A kind of electromagnet series connection subzero temperature resistor current control assembly of the present utility model; the low malfunction causing electromagnet of surge voltage can be solved; be reached through the lightning current not malfunction of little surge voltage to high surge voltage, make lightning protection continuous and effective that circuit is normally worked.
The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.
Claims (8)
1. a current control component, comprise tripping mechanism (2), moving contact (8) and fixed contact (9), it is characterized in that, also comprise discharging gap (5), negative temperature coefficient resistance (4) and electromagnet (3), described electromagnet (3) comprises electromagnet coil and dynamic iron core, described electromagnet coil and negative temperature coefficient resistance (4) are connected in series, described discharging gap (5) is connected in parallel on described electromagnet coil and negative temperature coefficient resistance (4) two ends, tripping mechanism (2) and described moving contact (8) link, when dynamic iron core action, described dynamic iron core clashes into tripping mechanism (2), moving contact (8) and fixed contact (9) is made to become released state from contact condition after described tripping mechanism (2) completes dropout.
2. current control component as claimed in claim 1, it is characterized in that, the drop-away time of described tripping mechanism (2) is no less than 5 ms, power current is greater than the drop-away time of described tripping mechanism by the duration of electromagnet coil, and lightning current is less than the drop-away time of described tripping mechanism by the duration of electromagnet coil.
3. current control component as claimed in claim 1 or 2, it is characterized in that, the room temperature resistance of described negative temperature coefficient resistance (4) is 1 ~ 50.
4. current control component as claimed in claim 3, is characterized in that, described electromagnet (3) also comprises the return spring for returning to the front position of action after making iron core action.
5. the current control component as described in claim 1,2 or 4, is characterized in that, each sparking electrode is provided with semicircle projection or plane electrode part, and described each sparking electrode opposes in opposite directions.
6. current control component as claimed in claim 5, it is characterized in that, also comprise end of incoming cables (1) and leading-out terminal (6), described end of incoming cables (1) is connected with the moving contact (8) of described discharging gap (5) side, and described leading-out terminal (6) is connected with the opposite side of described discharging gap (5).
7. the current control component as described in claim 2 or 4 or 6, is characterized in that, the puncture voltage of described discharging gap (5) is greater than the induced potential that power current produces at described electromagnet coil two ends.
8. current control component as claimed in claim 7, is characterized in that, described negative temperature coefficient resistance (4) is arranged on that electromagnet coil is outside or electromagnet coil is inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520136926.3U CN204559121U (en) | 2015-03-11 | 2015-03-11 | A kind of current control component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520136926.3U CN204559121U (en) | 2015-03-11 | 2015-03-11 | A kind of current control component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204559121U true CN204559121U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520136926.3U Withdrawn - After Issue CN204559121U (en) | 2015-03-11 | 2015-03-11 | A kind of current control component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204559121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767193A (en) * | 2015-03-11 | 2015-07-08 | 厦门大恒科技有限公司 | Current control assembly |
-
2015
- 2015-03-11 CN CN201520136926.3U patent/CN204559121U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767193A (en) * | 2015-03-11 | 2015-07-08 | 厦门大恒科技有限公司 | Current control assembly |
| CN104767193B (en) * | 2015-03-11 | 2018-07-13 | 厦门大恒科技有限公司 | A kind of current control component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150812 Effective date of abandoning: 20180713 |