CN204992567U - Lightning protection circuit - Google Patents
Lightning protection circuit Download PDFInfo
- Publication number
- CN204992567U CN204992567U CN201520781566.2U CN201520781566U CN204992567U CN 204992567 U CN204992567 U CN 204992567U CN 201520781566 U CN201520781566 U CN 201520781566U CN 204992567 U CN204992567 U CN 204992567U
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- protection circuit
- piezo
- discharge tube
- lightning protection
- gas discharge
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Abstract
The utility model discloses a lightning protection circuit, establish the one -level structure of discharging in the circuit of protecting, second grade structure and the third grade structure of discharging of discharging, the one -level is discharged the structure and is laid the triangle copper foil respectively at zero line and live wire front end, the second grade discharge the structure be between zero line by the circuit protected and live wire parallelly connected piezo -resistor, parallelly connected ceramic gas discharge tube and piezo -resistor between live wire and ground wire, the third grade discharge the structure be between the zero line by the protection circuit and live wire parallelly connected common mode filter ware, the parallelly connected ceramic gas discharge tube of output of common mode filter ware. Through adopting the third grade structure of discharging for the circuit releases away temporal high load current when suffering the thunderbolt, is used for protecting hou mian core facility's circuit safety.
Description
Technical field
The utility model relates to a kind of lightning protection circuit, belongs to lightning-protection engineering field.
Background technology
Lightning Protection Design in the market has two kinds of one to be " drawing thunder ", and one is " disappear thunder ", is exactly power source surge protector, be connected in parallel in protected circuit, and cost is high and put thunder weak effect, equally can impact equipment cause damage when being struck by lightning.
Utility model content
The purpose of this utility model is to provide a kind of lightning protection circuit, and high voltage release thunderbolt produced by discharge tube, piezo-resistance etc., plays the effect of protective circuit.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of lightning protection circuit, establishes one-level discharging structure, two-stage discharge structure and three grades of discharging structures in protected circuit;
Described one-level discharging structure refers to lays triangle Copper Foil respectively at the zero line of the 220V ac input end of protected circuit and live wire front end;
Described two-stage discharge structure refers to piezo-resistance in parallel between the zero line and live wire of protected circuit, ceramic gas discharge tube in parallel and piezo-resistance between live wire and ground wire, and described ceramic gas discharge tube and piezo-resistance are in series;
Described three grades of discharging structures refer to common-mode filter in parallel between the zero line and live wire of protected circuit, the output ceramic gas discharge tube in parallel of common-mode filter.
In aforesaid two-stage discharge structure, ceramic gas discharge tube and piezo-resistance are also in series with a fuse.
Aforesaid zero line of stating also is connected a resettable fuse.
The model of aforesaid piezo-resistance is 15D471K.
The model of the ceramic gas discharge tube in aforesaid two-stage discharge structure is INT2R470L.
The model of the ceramic gas discharge tube in aforesaid three grades of discharging structures is 2RM470-8.
Aforesaid fuse is 10A fuse.
Advantage of the present utility model is: by ceramic gas discharge tube and piezo-resistance; make circuit when being struck by lightning; the high load capacity electric current of moment is discharged; be used for the line security of the nucleus equipment protected below; can reuse; the high pressure of more than 2000V can be born, and when voltage exceedes certain limit, circuit shut-down protection core electron Plant in good condition.
Accompanying drawing explanation
Fig. 1 is the line map of lightning protection circuit of the present utility model;
Fig. 2 is the arrangement schematic diagram of triangle Copper Foil of the present utility model.
Embodiment
Now with embodiment, the utility model is described in further detail by reference to the accompanying drawings.
As shown in Figure 1, lightning protection circuit of the present utility model, refers in protected circuit and establishes one-level discharging structure, two-stage discharge structure and three grades of discharging structures.
Wherein, as shown in Figure 2, one-level discharging structure refers to lays triangle Copper Foil respectively at the zero line N of the 220V ac input end of protected circuit and live wire L front end, and high load capacity electric current on zero line N, live wire L is discharged by point discharge, and this is one-level electric discharge.
Two-stage discharge structure refers to piezo-resistance 2 in parallel between the zero line N and live wire L of protected circuit; ceramic gas discharge tube 3 in parallel and piezo-resistance 2 between live wire L and ground wire GNI; ceramic gas discharge tube 3 and piezo-resistance 2 are in series, and carry out two-stage discharge by ceramic gas discharge tube 3 and piezo-resistance 2.
Three grades of discharging structures refer to common-mode filter in parallel between the zero line N and live wire L of protected circuit; the output ceramic gas discharge tube 3 in parallel of common-mode filter; adopt common-mode filter to carry out filtering to remaining electric charge after one-level electric discharge, then carry out three grades of electric discharges by ceramic gas discharge tube 3.
Meanwhile, a resettable fuse 1 that zero line N connects, in two-stage discharge structure, ceramic gas discharge tube 3 and piezo-resistance 2 are connected a 10A fuse 4.Like this, when voltage exceedes the nominal load that components and parts bear, can breaking circuit, the impact that protection equipment is not below struck by lightning.
The model of piezo-resistance of the present utility model elects 15D471K as.
The model of the ceramic gas discharge tube in two-stage discharge structure of the present utility model elects INT2R470L as.
The model of the ceramic gas discharge tube in three grades of discharging structures of the present utility model elects 2RM470-8 as.
Claims (7)
1. a lightning protection circuit, is characterized in that, establishes one-level discharging structure in protected circuit, two-stage discharge structure and three grades of discharging structures;
Described one-level discharging structure refers to lays triangle Copper Foil respectively at the zero line of the 220V ac input end of protected circuit and live wire front end;
Described two-stage discharge structure refers to piezo-resistance in parallel between the zero line and live wire of protected circuit, ceramic gas discharge tube in parallel and piezo-resistance between live wire and ground wire, and described ceramic gas discharge tube and piezo-resistance are in series;
Described three grades of discharging structures refer to common-mode filter in parallel between the zero line and live wire of protected circuit, the output ceramic gas discharge tube in parallel of common-mode filter.
2. a kind of lightning protection circuit according to claim 1, is characterized in that, in described two-stage discharge structure, ceramic gas discharge tube and piezo-resistance are also in series with a fuse.
3. a kind of lightning protection circuit according to claim 1, is characterized in that, described zero line is also connected a resettable fuse.
4. a kind of lightning protection circuit according to claim 1, is characterized in that, the model of described piezo-resistance is 15D471K.
5. a kind of lightning protection circuit according to claim 1, is characterized in that, the model of the ceramic gas discharge tube in described two-stage discharge structure is INT2R470L.
6. a kind of lightning protection circuit according to claim 1, is characterized in that, the model of the ceramic gas discharge tube in described three grades of discharging structures is 2RM470-8.
7. a kind of lightning protection circuit according to claim 2, is characterized in that, described fuse is 10A fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781566.2U CN204992567U (en) | 2015-10-10 | 2015-10-10 | Lightning protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781566.2U CN204992567U (en) | 2015-10-10 | 2015-10-10 | Lightning protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204992567U true CN204992567U (en) | 2016-01-20 |
Family
ID=55126895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520781566.2U Active CN204992567U (en) | 2015-10-10 | 2015-10-10 | Lightning protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204992567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186480A (en) * | 2015-10-10 | 2015-12-23 | 南京赛康交通安全科技股份有限公司 | Lightning protection circuit |
| CN107785881A (en) * | 2016-08-26 | 2018-03-09 | 天津市中马骏腾精密机械制造有限公司 | A kind of Intelligent sewing machine with power input electromagnetic compatible protective function |
-
2015
- 2015-10-10 CN CN201520781566.2U patent/CN204992567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186480A (en) * | 2015-10-10 | 2015-12-23 | 南京赛康交通安全科技股份有限公司 | Lightning protection circuit |
| CN107785881A (en) * | 2016-08-26 | 2018-03-09 | 天津市中马骏腾精密机械制造有限公司 | A kind of Intelligent sewing machine with power input electromagnetic compatible protective function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210014 Guanghua Road, Qinhuai District, Nanjing, Jiangsu 1 Patentee after: Nanjing Saikang Traffic Safety Technology Co.,Ltd. Address before: 210014 Guanghua Road, Qinhuai District, Nanjing, Jiangsu 1 Patentee before: NANJING SKY TRAFFIC SAFETY TECHNOLOGY Co.,Ltd. |