CN203941249U - A kind of lightning protection detection module - Google Patents
A kind of lightning protection detection module Download PDFInfo
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- CN203941249U CN203941249U CN201420262704.1U CN201420262704U CN203941249U CN 203941249 U CN203941249 U CN 203941249U CN 201420262704 U CN201420262704 U CN 201420262704U CN 203941249 U CN203941249 U CN 203941249U
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- detection module
- thermal cutoffs
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Abstract
The utility model discloses a kind of lightning protection detection module, comprise the power circuit connecting successively, lightning protection circuit, output circuit and equipment to be protected, also comprise the Acquisition Circuit and the decision circuitry that are connected successively with described lightning protection circuit, described Acquisition Circuit comprises signal input circuit, the testing circuit being connected in parallel with described signal input circuit, switching signal produces circuit, and signal output apparatus, described testing circuit comprises Thermal Cutoffs and the voltage dependent resistor (VDR) being connected in series, described switching signal produces circuit and comprises relay module, described signal output apparatus is connected with described decision circuitry.Whether the lightning protection detection module that the utility model provides judges after charged switching value can being converted to uncharged switching value output, detect in real time lightning protection component and lost efficacy, easy to detect, in time, reliable.
Description
Technical field
The utility model relates to Lightning Prevention Technique field, more particularly, relates to a kind of detection module whether lightning protection lost efficacy that detects.
Background technology
In electric system, power transmission and transformation and controller switching equipment are in operation and can be subject to the effect of following several voltages: the operating voltage of (1) long term; (2) transient overvoltage producing due to earth fault, resonance and other reasons; (3) lightning surge; (4) switching overvoltage.Wherein, lightning surge can sense larger transient overvoltage in signal line and loop thereof; may there is higher magnitude of voltage; easily circuit is damaged; the simple apparatus insulated level of raising that relies on is born lightning surge; not only unreasonable economically; and be also often impossible technically; therefore; must take necessary thunder And Lightning Preventive Measures to various electrical equipments in electric system; when having lightning impulse, lightning voltage amplitude limitation is below horizontal at protected equipment lightning impulse, make electrical equipment protected.
In apparatus for preventing thunderbolt, when lightning protection device product occurs deteriorated cannot warning through long-term use or after thunderbolt, it has lost lightning protection function, but user but cannot discover, when professional gets rid of this type of fault, difficulty is also very large, and the large electric current that is struck by lightning short pulse high current of compole while being, when lightning protection component lost efficacy, the energy that transient absorption is excessive, lightning protection component burning, can cause interiors of products circuit to burn when serious, initiation fire, this has brought great hidden danger to the safety of product.
And, high speed development along with lightning-protected product integrated technology, its lightning-protection module has been difficult to pull down does offline inspection, the performance of lightning-protected product just cannot guarantee so, in addition, being on the increase and using when all kinds lightning-protected product of lightning-protected product position, only relies on the routine inspection mode of traditional set time cannot accomplish to judge timely and accurately the quality of lightning-protected product performance.
Utility model content
The purpose of this utility model is the problem of mentioning in above-mentioned background technology in order to solve, a kind of lightning protection detection module is provided, this detection module judges after charged switching value can being converted to uncharged switching value output, whether detect in real time lightning protection component lost efficacy, easy to detect, in time, reliable.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of lightning protection detection module, comprise the power circuit connecting successively, lightning protection circuit, output circuit, and equipment to be protected, also comprise the Acquisition Circuit and the decision circuitry that are connected successively with described lightning protection circuit, described Acquisition Circuit comprises signal input circuit, the testing circuit being connected in parallel with described signal input circuit, switching signal produces circuit, and signal output apparatus, described testing circuit comprises Thermal Cutoffs and the voltage dependent resistor (VDR) being connected in series, described switching signal produces circuit and comprises relay module, described relay module comprises primary coil, common point, normally opened contact, and normally closed contact, described primary coil and described voltage dependent resistor (VDR) are connected in parallel, described common point, normally opened contact, and normally opened contact is all connected with described signal output apparatus, described signal output apparatus is connected with described decision circuitry.
Further, between described Thermal Cutoffs and described voltage dependent resistor (VDR), by heat-shrink tube, fit tightly.
Further, together with described Thermal Cutoffs pin screws up with a pin of described voltage dependent resistor (VDR).
Further, described Thermal Cutoffs is set to fuse when the temperature of described Thermal Cutoffs surpasses predetermined value.
Compared with prior art, the beneficial effects of the utility model are as follows: whether the lightning protection detection module that the utility model provides judges after charged switching value can being converted to uncharged switching value output, detect in real time lightning protection component and lost efficacy, easy to detect, in time, reliable.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is circuit theory schematic diagram of the present utility model;
Fig. 2 is electrical block diagram of the present utility model.
Reference numeral: 1, power circuit, 2, lightning protection circuit, 3, output circuit, 4, equipment to be protected, 5, Acquisition Circuit; 6, decision circuitry, 7, Thermal Cutoffs, 8, voltage dependent resistor (VDR), 9, relay module; 91, primary coil, 92, common point, 93, normally closed contact, 94, normally opened contact.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
In conjunction with Fig. 1, a kind of lightning protection detection module shown in Fig. 2, comprise the power circuit 1 connecting successively, lightning protection circuit 2, output circuit 3, and equipment to be protected 4, also comprise the Acquisition Circuit 5 and the decision circuitry 6 that are connected successively with lightning protection circuit 2, Acquisition Circuit 5 comprises signal input circuit, the testing circuit being connected in parallel with signal input circuit, switching signal produces circuit, and signal output apparatus, testing circuit comprises Thermal Cutoffs 7 and the voltage dependent resistor (VDR) 8 being connected in series, switching signal produces circuit and comprises relay module 9, relay module 9 comprises primary coil 91, common point 92, normally opened contact 94, and normally closed contact 93, primary coil 91 is connected in parallel with voltage dependent resistor (VDR) 8, common point 92, normally opened contact 94, and normally opened contact 93 is all connected with signal output apparatus, signal output apparatus is connected with decision circuitry 6.
In the present embodiment, between Thermal Cutoffs 7 and voltage dependent resistor (VDR) 8, by heat-shrink tube, fit tightly, together with a pin of Thermal Cutoffs 7 screws up with a pin of voltage dependent resistor (VDR) 8, wherein, Thermal Cutoffs 7 is set to fuse when the temperature of Thermal Cutoffs 7 surpasses predetermined value.The utility model fits tightly Thermal Cutoffs 7 by heat-shrink tube with voltage dependent resistor (VDR) 8 together with, and together with a pin of pin of Thermal Cutoffs 7 and voltage dependent resistor (VDR) 8 is screwed up, greatly improved heat transfer rate, promoted the sensitivity of Thermal Cutoffs 7 reactions, can react timely and accurately, greatly reduce the incidence of fault.
The utility model course of work is as follows: Acquisition Circuit 5 is by the voltage process testing circuit collecting, 8 pairs of superpotential that collect of voltage dependent resistor (VDR) are carried out clamper, simultaneously, Thermal Cutoffs 7 is disconnecting circuit when voltage dependent resistor (VDR) 8 temperature are raised to predetermined value, voltage signal in voltage dependent resistor (VDR) 8 outputs to decision circuitry 6 by relay module 9 isolation, wherein, after Thermal Cutoffs 7 disconnects, the normally-open normally-close state of relay module 9 changes, when Thermal Cutoffs 7 is normal, relay module 9 energized actions, it is normally closed that often opening originally converts to, normally closed often converting to opened, after Thermal Cutoffs 7 disconnects, relay module 9 dead electricity actions, normally-open normally-close is got back to original state, produce switching signal to decision circuitry 6, to judge whether lightning-protected product lost efficacy.
The utility model adopts voltage dependent resistor (VDR) 8 as Overvoltage suppressing element; voltage dependent resistor (VDR) 8 is high-impedance state before conducting; after conducting, be low resistive state; under normal circumstances; on protected circuit, there is no superpotential; voltage dependent resistor (VDR) 8 not conductings; while there is superpotential in the circuit of protected equipment; voltage dependent resistor (VDR) 8 conductings are also fallen superpotential by voltage dependent resistor (VDR) 8 short circuits; charged switching value is converted to uncharged switching value isolation simultaneously and outputs to decision circuitry 6, whether lightning-protected product was lost efficacy and judged.
The utility model produces circuit by switching signal is set, charged switching value is converted to uncharged switching value, adopt Thermal Cutoffs 7 disconnecting circuit when temperature reaches predetermined value simultaneously, the temperature that the voltage dependent resistor (VDR) 8 of experiencing Thermal Cutoffs 7 sharply rises and fusing, reliably voltage dependent resistor (VDR) 8 is cut off from circuit in time, prevented the generation of burning and explosion accident, have simple in structure, working stability, the advantage that reliability is high.
The heat discharging when the utility model is deteriorated by lightning protection component passes to Thermal Cutoffs 7 as much as possible, Thermal Cutoffs 7 is disconnected, the switching signal changing, by remote signalling data terminal, pass to decision circuitry 6, improved the reliability of equipment, realized the duty of lightning-protected product is carried out to telemonitoring in real time.
The utility model is simple in structure, possesses reliable remote signalling dry contact output, makes maintainer to lightning-protected product duty, carry out telemonitoring in real time, can realize the automatic monitoring to lightning-protected product.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a lightning protection detection module, comprise the power circuit connecting successively, lightning protection circuit, output circuit, and equipment to be protected, it is characterized in that, also comprise the Acquisition Circuit and the decision circuitry that are connected successively with described lightning protection circuit, described Acquisition Circuit comprises signal input circuit, the testing circuit being connected in parallel with described signal input circuit, switching signal produces circuit, and signal output apparatus, described testing circuit comprises Thermal Cutoffs and the voltage dependent resistor (VDR) being connected in series, described switching signal produces circuit and comprises relay module, described relay module comprises primary coil, common point, normally opened contact, and normally closed contact, described primary coil and described voltage dependent resistor (VDR) are connected in parallel, described common point, normally opened contact, and normally opened contact is all connected with described signal output apparatus, described signal output apparatus is connected with described decision circuitry.
2. a kind of lightning protection detection module as claimed in claim 1, is characterized in that, between described Thermal Cutoffs and described voltage dependent resistor (VDR), by heat-shrink tube, fits tightly.
3. a kind of lightning protection detection module as claimed in claim 2, is characterized in that, together with a pin of described Thermal Cutoffs screws up with a pin of described voltage dependent resistor (VDR).
4. a kind of lightning protection detection module as claimed in claim 1, is characterized in that, described Thermal Cutoffs is set to fuse when the temperature of described Thermal Cutoffs surpasses predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262704.1U CN203941249U (en) | 2014-05-21 | 2014-05-21 | A kind of lightning protection detection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262704.1U CN203941249U (en) | 2014-05-21 | 2014-05-21 | A kind of lightning protection detection module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941249U true CN203941249U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420262704.1U Active CN203941249U (en) | 2014-05-21 | 2014-05-21 | A kind of lightning protection detection module |
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| Country | Link |
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| CN (1) | CN203941249U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449323A (en) * | 2016-09-13 | 2017-02-22 | 国网浙江省电力公司湖州供电公司 | Automatic tripping device with air gap lightning protection device |
| CN107102227A (en) * | 2017-05-19 | 2017-08-29 | 武汉爱劳高科技有限责任公司 | Computer based intelligent lightning protecting monitoring device |
| CN112834854A (en) * | 2021-01-08 | 2021-05-25 | 北京全路通信信号研究设计院集团有限公司 | Train control system lightning protection module degradation real-time detection device based on mechanical isolation |
| CN114552556A (en) * | 2022-01-24 | 2022-05-27 | 华为数字能源技术有限公司 | Lightning protection device and power supply equipment |
-
2014
- 2014-05-21 CN CN201420262704.1U patent/CN203941249U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449323A (en) * | 2016-09-13 | 2017-02-22 | 国网浙江省电力公司湖州供电公司 | Automatic tripping device with air gap lightning protection device |
| CN106449323B (en) * | 2016-09-13 | 2018-02-16 | 国网浙江省电力公司湖州供电公司 | Automatic release device with the air gap lightning protection device |
| CN107102227A (en) * | 2017-05-19 | 2017-08-29 | 武汉爱劳高科技有限责任公司 | Computer based intelligent lightning protecting monitoring device |
| CN112834854A (en) * | 2021-01-08 | 2021-05-25 | 北京全路通信信号研究设计院集团有限公司 | Train control system lightning protection module degradation real-time detection device based on mechanical isolation |
| CN112834854B (en) * | 2021-01-08 | 2023-05-12 | 北京全路通信信号研究设计院集团有限公司 | Train control system lightning protection module degradation real-time detection device based on mechanical isolation |
| CN114552556A (en) * | 2022-01-24 | 2022-05-27 | 华为数字能源技术有限公司 | Lightning protection device and power supply equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |