CN202856342U - Grounding-free isolation type lightning protection device - Google Patents
Grounding-free isolation type lightning protection device Download PDFInfo
- Publication number
- CN202856342U CN202856342U CN 201220578800 CN201220578800U CN202856342U CN 202856342 U CN202856342 U CN 202856342U CN 201220578800 CN201220578800 CN 201220578800 CN 201220578800 U CN201220578800 U CN 201220578800U CN 202856342 U CN202856342 U CN 202856342U
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- piezo
- resistance
- pressure
- limiting
- limit
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Abstract
The utility model provides a grounding-free isolation type lightning protection device. The grounding-free isolation type lightning protection device comprises a housing, an input end, an output end, a first voltage-limiting and current-limiting branch and a second voltage-limiting and current-limiting branch. The nodes of the second voltage-limiting and current-limiting branch are further connected with an isolation transformer. A primary coil and a secondary coil are arranged on the isolation transformer, wherein the primary coil is connected with the nodes of the second voltage-limiting and current-limiting branch, and the secondary coil of the isolation transformer is used for output. The bottom of the housing is formed as in integral body and extended towards two sides to form fixation edges, fixation holes are formed in the fixation edges, and a plurality of piezoresistors are arranged on the first voltage-limiting and current-limiting branch and the second voltage-limiting and current-limiting branch. The secondary coil of the isolation transformer is connected with the voltage-limiting and current-limiting branch, and a seventh piezoresistor, an eighth piezoresistor an a ninth piezoresistor are arranged on the voltage-limiting and current-limiting branch, wherein the seventh piezoresistor is connected between wires for limiting voltage between wires, and nodes of the eighth piezoresistor and the ninth piezoresistor are grounded for limiting voltage between wires and the ground. The grounding-free isolation type lightning protection device of the utility model has advantages of simple structure, low electromagnetic interference, low residual voltage and good lightning protection effect, and can be used to perform multilevel voltage and current limiting.
Description
Technical field:
The utility model relates to lightning protection, takes shelter from the thunder and use the technique with the apparatus field, relates in particular to a kind of ground connection separation thunder-prevention protector of exempting from.
Background technology:
In the prior art, lightning protection, lightning measure for thunder and lightning adopt the mode that opens circuit after the overvoltage more.Principle is: strengthen inductance, form after the overvoltage and open circuit, disconnect the relay switch on the microelectronic device power line.Perhaps adopt anti-lightening protector, namely adopt the mode of pressure-limit current-limit, the protection power consumption equipment.Traditional anti-lightening protector, comprise the first current limliting branch road, the second current limliting branch road and the first inductance coil, the second inductance coil, R1, R2, the R3 piezo-resistance forms the first current limliting branch road, R4, R5, the R6 piezo-resistance forms the second current limliting branch road, wherein, R1 is used for pressure limiting between line, R2, and R3 is used for the pressure limiting of line ground; R6 is used for pressure limiting between line, R4, and R5 is used for the pressure limiting of line ground.Although this structure can be accomplished pressure-limit current-limit to a certain degree, but, when the surge current after thunderbolt occurs is very large, such as surpassing 2000 volts, then led off slowly, cause the infringement of subordinate's circuit or electronic equipment, especially microelectronic device, easier being damaged, and the interference of electromagnetism high impulse is large, causes heavy losses.In view of this technical problem, a kind of simple in structure in the urgent need to occurring, can the Multi-stage pressure limiting current limliting, electromagnetic interference is low, a kind of ground connection separation thunder-prevention protector of exempting from that residual voltage is low.
Summary of the invention:
The purpose of this utility model is to overcome the shortcoming that exists in the prior art, provides a kind of simple in structure, can the Multi-stage pressure limiting current limliting, and electromagnetic interference is low, a kind of ground connection separation thunder-prevention protector of exempting from that residual voltage is low.
To achieve these goals; the utility model provides a kind of ground connection separation thunder-prevention protector of exempting from; comprise housing; input; output; the first pressure-limit current-limit branch road; the second pressure-limit current-limit branch road; wherein; further be connected with isolating transformer on the node of the second pressure-limit current-limit branch road; be provided with primary coil and rear class coil on the isolating transformer; primary coil is communicated with the node of the second pressure-limit current-limit branch road; the rear class coil output of isolating transformer; the bottom of described housing is one-body molded to be extended with fixed edge to both sides; be provided with fixing hole on the fixed edge; housing and fixed edge, fixing hole are one-body molded during fabrication; be provided with some piezo-resistances on described the first pressure-limit current-limit branch road and the second pressure-limit current-limit branch road.
Be connected with the pressure-limit current-limit branch road on the rear class coil of isolating transformer, be provided with the 7th piezo-resistance on the pressure-limit current-limit branch road, the 8th piezo-resistance and the 9th piezo-resistance, the 7th piezo-resistance connect and line between be used for pressure limiting between line, the 8th piezo-resistance and the 9th piezo-resistance node ground connection are used for pressure limiting between line ground.
Input is connected with the first pressure-limit current-limit branch road, is provided with the first piezo-resistance on the first pressure-limit current-limit branch road, the second piezo-resistance, the 3rd piezo-resistance and the first inductance coil; Be provided with the 4th piezo-resistance, the 5th piezo-resistance, the 6th piezo-resistance and the second inductance coil on the second pressure-limit current-limit branch road; The first piezo-resistance and the 6th piezo-resistance are connected between line for pressure limiting between line; The second piezo-resistance, the 3rd piezo-resistance node ground connection is used for pressure limiting between line ground; The 4th piezo-resistance, the 5th piezo-resistance node ground connection are used for pressure limiting between line ground.
Output is connected with the node of pressure-limit current-limit branch road, is coated with nanometer insulation meterial on the isolating transformer, and described nanometer insulation meterial is the aromatic heterocycle polymer polymer that contains imide group.
Input, output, the first pressure-limit current-limit branch road, the second pressure-limit current-limit branch road, isolating transformer, the pressure-limit current-limit branch road all is positioned at enclosure interior.
Advantage of the present utility model is simple in structure; can the Multi-stage pressure limiting current limliting; electromagnetic interference is low; residual voltage is low, is specially: the utility model adopts Multi-stage pressure limiting current limliting branch road, and isolating transformer is set betwixt; isolating transformer adopts nanometer insulation meterial (the aromatic heterocycle polymer polymer that contains imide group) shielding isolation; anti-interference, the Multi-stage pressure limiting current limliting makes residual voltage low, and protection subordinate's circuit and microelectronic device exempt from thunder and lightning and wound.Lightning protection effect is good.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is internal circuit schematic diagram of the present utility model.
The accompanying drawing sign:
1, input 2, housing 3, the first inductance coil
4, the second inductance coil 5, primary coil 6, rear class coil
7, output 8, fixing hole 9, fixed edge
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described.
Show that such as Fig. 1-Fig. 2 Fig. 1 is structural representation of the present utility model.Fig. 2 is internal circuit schematic diagram of the present utility model.(R1-R9 among Fig. 2, respectively corresponding the first piezo-resistance-the 9th piezo-resistance)
The utility model comprises housing 2, input 1, output 7, the first pressure-limit current-limit branch road, the second pressure-limit current-limit branch road, wherein, further be connected with isolating transformer on the node of the second pressure-limit current-limit branch road, be provided with primary coil 5 and rear class coil 6 on the isolating transformer, primary coil 5 is communicated with the node of the second pressure-limit current-limit branch road, rear class coil 6 outputs of isolating transformer, the one-body molded fixed edge 9 that is extended with to both sides in the bottom of housing 2, be provided with fixing hole 8 on the fixed edge 9, housing 2 and fixed edge 9, fixing hole 8 is one-body molded during fabrication, be provided with some piezo-resistances on the first pressure-limit current-limit branch road and the second pressure-limit current-limit branch road.Be connected with the pressure-limit current-limit branch road on the rear class coil 6 of isolating transformer, be provided with the 7th piezo-resistance on the pressure-limit current-limit branch road, the 8th piezo-resistance and the 9th piezo-resistance, the 7th piezo-resistance connect and line between be used for pressure limiting between line, the 8th piezo-resistance and the 9th piezo-resistance node ground connection are used for pressure limiting between line ground.Input 1 is connected with the first pressure-limit current-limit branch road, is provided with the first piezo-resistance on the first pressure-limit current-limit branch road, the second piezo-resistance, the 3rd piezo-resistance and the first inductance coil; Be provided with the 4th piezo-resistance, the 5th piezo-resistance, the 6th piezo-resistance and the second inductance coil on the second pressure-limit current-limit branch road; The first piezo-resistance and the 6th piezo-resistance are connected between line for pressure limiting between line; The second piezo-resistance, the 3rd piezo-resistance node ground connection is used for pressure limiting between line ground; The 4th piezo-resistance, the 5th piezo-resistance node ground connection are used for pressure limiting between line ground.Output 7 is connected with the node of pressure-limit current-limit branch road, is coated with nanometer insulation meterial on the isolating transformer, and nanometer insulation meterial is the aromatic heterocycle polymer polymer that contains imide group.Input 1, output 7, the first pressure-limit current-limit branch road, the second pressure-limit current-limit branch road, isolating transformer, pressure-limit current-limit branch road all are positioned at housing 2 inside.
The utility model is simple in structure; can the Multi-stage pressure limiting current limliting; electromagnetic interference is low; residual voltage is low, is specially: the utility model adopts Multi-stage pressure limiting current limliting branch road, and isolating transformer is set betwixt; isolating transformer adopts nanometer insulation meterial (the aromatic heterocycle polymer polymer that contains imide group) shielding isolation; anti-interference, the Multi-stage pressure limiting current limliting makes residual voltage low, and protection subordinate's circuit and microelectronic device exempt from thunder and lightning and wound.Lightning protection effect is good.
Claims (4)
1. exempt from ground connection separation thunder-prevention protector for one kind; comprise housing; input; output; the first pressure-limit current-limit branch road; the second pressure-limit current-limit branch road; it is characterized in that; further be connected with isolating transformer on the node of the second pressure-limit current-limit branch road; be provided with primary coil and rear class coil on the isolating transformer; primary coil is communicated with the node of the second pressure-limit current-limit branch road; the rear class coil output of isolating transformer; the bottom of described housing is one-body molded to be extended with fixed edge to both sides; be provided with fixing hole on the fixed edge; housing and fixed edge, fixing hole are one-body molded during fabrication; be provided with some piezo-resistances on described the first pressure-limit current-limit branch road and the second pressure-limit current-limit branch road.
2. the described ground connection separation thunder-prevention protector of exempting from according to claim 1; it is characterized in that; be connected with the pressure-limit current-limit branch road on the rear class coil of isolating transformer; be provided with the 7th piezo-resistance on the pressure-limit current-limit branch road; the 8th piezo-resistance and the 9th piezo-resistance; the 7th piezo-resistance connect and line between be used for pressure limiting between line, the 8th piezo-resistance and the 9th piezo-resistance node ground connection are used for pressure limiting between line ground.
3. the described ground connection separation thunder-prevention protector of exempting from according to claim 1 and 2, it is characterized in that input is connected with the first pressure-limit current-limit branch road, is provided with the first piezo-resistance on the first pressure-limit current-limit branch road, the second piezo-resistance, the 3rd piezo-resistance and the first inductance coil; Be provided with the 4th piezo-resistance, the 5th piezo-resistance, the 6th piezo-resistance and the second inductance coil on the second pressure-limit current-limit branch road; The first piezo-resistance and the 6th piezo-resistance are connected between line for pressure limiting between line; The second piezo-resistance, the 3rd piezo-resistance node ground connection is used for pressure limiting between line ground; The 4th piezo-resistance, the 5th piezo-resistance node ground connection are used for pressure limiting between line ground.
4. the described ground connection separation thunder-prevention protector of exempting from according to claim 2; it is characterized in that; output is connected with the node of pressure-limit current-limit branch road, is coated with nanometer insulation meterial on the isolating transformer, and described nanometer insulation meterial is the aromatic heterocycle polymer polymer that contains imide group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578800 CN202856342U (en) | 2012-11-06 | 2012-11-06 | Grounding-free isolation type lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578800 CN202856342U (en) | 2012-11-06 | 2012-11-06 | Grounding-free isolation type lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856342U true CN202856342U (en) | 2013-04-03 |
Family
ID=47987500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220578800 Expired - Fee Related CN202856342U (en) | 2012-11-06 | 2012-11-06 | Grounding-free isolation type lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162102A (en) * | 2014-06-09 | 2015-12-16 | 山东纵深科技发展有限公司 | Lightning protection grounding-free isolation transformer and application of lightning protection grounding-free isolation transformer to lightning protection for communication broadband box and electric energy gatherer |
-
2012
- 2012-11-06 CN CN 201220578800 patent/CN202856342U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162102A (en) * | 2014-06-09 | 2015-12-16 | 山东纵深科技发展有限公司 | Lightning protection grounding-free isolation transformer and application of lightning protection grounding-free isolation transformer to lightning protection for communication broadband box and electric energy gatherer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20191106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |