CN203645317U - Anti-thunder module and anti-thunder box - Google Patents
Anti-thunder module and anti-thunder box Download PDFInfo
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- CN203645317U CN203645317U CN201320839822.XU CN201320839822U CN203645317U CN 203645317 U CN203645317 U CN 203645317U CN 201320839822 U CN201320839822 U CN 201320839822U CN 203645317 U CN203645317 U CN 203645317U
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- electrode
- lightning protection
- transient voltage
- voltage suppressor
- protection circuit
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Abstract
The utility model discloses an anti-thunder module and an anti-thunder box. The anti-thunder module comprises a primary anti-thunder circuit, a secondary anti-thunder circuit and a tertiary anti-thunder circuit, all of which are connected in sequence. An output end of the tertiary anti-thunder circuit is connected with a protected device. The anti-thunder box comprises a box body, the anti-thunder module and an anti-thunder channel integrated with the anti-thunder module. The anti-thunder module is arranged in the box body. The box body is provided with a grounding terminal which is arranged for the grounding of the anti-thunder module. Three levels of anti-thunder circuits are arranged, and the residual voltage of the anti-thunder module is low, so that a magnetic steel detection device is effectively protected; in addition, the switching-off current of the anti-thunder module is low, and the high current is effectively prevented from entering the magnetic steel signal detection device.
Description
Technical field
The utility model relates to a kind of device to overvoltage response, is specifically related to a kind of lightning-protection module and railway magnet steel signal lighting protection case.
Background technology
, mainly there are three problems in existing magnet steel signal lighting protection case: the 1. residual voltage of lightning protection unit large (about 300V～400V), by leaking, very easily causes damage to rear end equipment; 2. the cut-off current of lightning protection unit large (being less than 2A), the large electric current that thunderbolt produces enters magnet steel signal detection apparatus, damages magnet steel signal detection apparatus.3. lightning protection box only has at most 10 passages, in the time that engineering site need to access 40 passages, only has the quantity that increases the quantity of lightning protection box and increase simultaneously rack could meet on-the-spot instructions for use.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of lightning protection circuit and lightning protection box.
The purpose of this utility model is achieved through the following technical solutions; lightning-protection module; comprise the one-level lightning protection circuit, secondary lightning protection circuit and the three grades of lightning protection circuits that connect successively; described one-level lightning protection circuit two ends are connected in parallel between zero line and live wire, the output of described three grades of lightning protection circuits and protected equipment connection.
Further, described one-level lightning protection circuit comprises three utmost point gas discharge tubes, the one or two utmost point gas discharge tube, the two or two utmost point gas discharge tube, the first resistance and the second resistance; Described three utmost point gas discharge tubes are connected between zero line and live wire, and three electrodes of described three utmost point gas discharge tubes are respectively as the first electrode, the second electrode and third electrode, and described third electrode is connected with three grades of lightning protection circuits, third electrode ground connection; Two electrodes of described the one or two utmost point gas discharge tube are respectively as the 4th electrode and the 5th electrode, and two electrodes of described the two or two utmost point gas discharge tube are respectively as the 6th electrode and the 7th electrode; Described the 4th electrode is connected with the first electrode by the first resistance, and described the 7th electrode is connected with the second electrode by the second resistance, and described the 5th electrode is connected with the 6th electrode, and described the 4th electrode is connected with secondary lightning protection circuit respectively with the 7th electrode; Described the first electrode is connected with secondary lightning protection circuit by the first resistance, and described the second electrode is connected with secondary lightning protection circuit by the second resistance.
Further, described secondary lightning protection circuit comprises two discharge tubes, and described the 4th electrode is connected with three grades of lightning protection circuits by a discharge tube respectively with the 7th electrode.
Further, described three grades of lightning protection circuits comprise the first bipolar Transient Voltage Suppressor, the second bipolar Transient Voltage Suppressor and the 3rd bipolar Transient Voltage Suppressor; Described the first bipolar Transient Voltage Suppressor is connected in parallel on the two ends of secondary lightning protection circuit after connecting with the second bipolar Transient Voltage Suppressor, described the first bipolar Transient Voltage Suppressor is connected with the third electrode of three utmost point gas discharge tubes with the common port of the second bipolar Transient Voltage Suppressor, and described the 3rd bipolar Transient Voltage Suppressor is connected in parallel on the two ends of two utmost point lightning protection circuits; The electric current of secondary lightning protection circuit output is first through the first bipolar Transient Voltage Suppressor and the second bipolar Transient Voltage Suppressor the 3rd bipolar Transient Voltage Suppressor of flowing through again, and described the 3rd bipolar Transient Voltage Suppressor is connected in parallel on the two ends of protected equipment.
Further, the operation voltage of described three utmost point gas discharge tubes be 75V to 140V, the response time is less than 1ns; Described secondary lightning protection circuit adopts quick GDT, and the voltage passing through is clamped down on, and the response time is less than 150ms; Bipolar Transient Voltage Suppressor in described three grades of lightning protection circuits is controlled the electric current passing through, and is not more than 200mA by the electric current of whole circuit.
The purpose of this utility model is to provide a kind of railway magnet steel signal lighting protection case, comprises casing, lightning-protection module and lightning protection passage, and described lightning-protection module is arranged in casing, and described casing is provided with the earth terminal for lightning-protection module ground connection.
Further, described lightning-protection module comprises the one-level lightning protection circuit, secondary lightning protection circuit and the three grades of lightning protection circuits that connect successively, and described one-level lightning protection circuit two ends are connected in parallel between zero line and live wire, the output of described three grades of lightning protection circuits and protected equipment connection.
Useful technique effect:
1, by three grades of lightning protection, the residual voltage of lightning protection unit is little, thereby effectively protects magnet steel checkout equipment;
2, the cut-off current of lightning protection unit is little, effectively prevents that large electric current from entering magnet steel signal detection apparatus;
3, a lightning protection box has 40 passages, and each passage independent design and not interfereing with each other can be according to actual conditions, the quantity of access lightning protection passage, and the not passage of the access use that can backup, had both met the quantitative demand of engineering site and had also saved production cost.
Brief description of the drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
Fig. 1 is the utility model lightning-protection module circuit diagram.
Embodiment
Below with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail; Should be appreciated that preferred embodiment is only for the utility model is described, instead of in order to limit protection range of the present utility model.
A kind of lightning-protection module, comprises the one-level lightning protection circuit, secondary lightning protection circuit and three grades of lightning protection circuits, the output of described three grades of lightning protection circuits and the protected equipment connection that connect successively.
One-level lightning protection circuit comprises three utmost point gas discharge tube G, the one or two utmost point gas discharge tube G1, the two or two utmost point gas discharge tube G2, the first resistance R 1 and the second resistance R 2; Described three utmost point gas discharge tube G are connected between zero line and live wire, and three electrodes of described three utmost point gas discharge tube G are respectively as the first electrode 1, the second electrode 2 and third electrode 3, and described third electrode 3 is connected with three grades of lightning protection circuits, third electrode 3 ground connection; Two electrodes of described the one or two utmost point gas discharge tube G1 are respectively as the 4th electrode 4 and the 5th electrode 5, and two electrodes of described the two or two utmost point gas discharge tube G2 are respectively as the 6th electrode 6 and the 7th electrode 7; Described the 4th electrode is connected with the first electrode 1 by the first resistance R 1, described the 7th electrode 7 is connected with the second electrode 2 by the second resistance R 2, described the 5th electrode 5 is connected with the 6th electrode 6, and described the 4th electrode 4 is connected with secondary lightning protection circuit respectively with the 7th electrode 7; Described the first electrode 1 is connected with secondary lightning protection circuit by the first resistance R 2, and described the second electrode 2 is connected with secondary lightning protection circuit by the second resistance R 2.
Secondary lightning protection circuit comprises two discharge tubes, i.e. the first discharge tube T1 and the second discharge tube T2, and described the 4th electrode 4 is connected with three grades of lightning protection circuits by a discharge tube respectively with the 7th electrode 7.
Three grades of lightning protection circuits comprise the first bipolar Transient Voltage Suppressor D1, the second bipolar Transient Voltage Suppressor D2 and the 3rd bipolar Transient Voltage Suppressor D3; Described the first bipolar Transient Voltage Suppressor D1 is connected in parallel on the two ends of secondary lightning protection circuit after connecting with the second bipolar Transient Voltage Suppressor D2, described the first bipolar Transient Voltage Suppressor D1 is connected with the third electrode 3 of three utmost point gas discharge tube G with the common port of the second bipolar Transient Voltage Suppressor D2, and described the 3rd bipolar Transient Voltage Suppressor D3 is connected in parallel on the two ends of two utmost point lightning protection circuits; The electric current of secondary lightning protection circuit output is first through the first bipolar Transient Voltage Suppressor D1 and the second bipolar Transient Voltage Suppressor D2 the 3rd bipolar Transient Voltage Suppressor D3 that flows through again, and described the 3rd bipolar Transient Voltage Suppressor D3 is connected in parallel on the two ends of protected equipment.
In lightning protection circuit as shown in the figure, first adopt gas discharge tube as first order overvoltage protection, overvoltage interference signal has been suppressed; In order to improve protection effect, adopt again discharge tube as second level overvoltage protection; Line resistance between two-stage overvoltage device provides coupling; form the collaborative overvoltage protection of two-stage together with two-stage overvoltage device; further; after two-stage lightning protection circuit, add three grades of lightning protection circuits that formed by common and different mode circuit, thereby guarantee that protected telecommunication apparatus avoids lightning surge infringement.
In the present embodiment, the operation voltage of described three utmost point gas discharge tubes be 75V to 140V, the response time is less than 1ns; Described secondary lightning protection circuit adopts quick GDT, and the voltage passing through is clamped down on, and the response time is less than 150ms; Bipolar Transient Voltage Suppressor in described three grades of lightning protection circuits is controlled the electric current passing through, and is not more than 200mA by the electric current of whole circuit.
The utility model is by three grades of lightning protection, and the residual voltage of lightning protection unit is little, thereby effectively protects magnet steel checkout equipment; The cut-off current of lightning protection unit is little, effectively prevents that large electric current from entering magnet steel signal detection apparatus.
A kind of railway magnet steel signal lighting protection case, comprises casing, lightning-protection module and lightning protection passage, and described lightning-protection module is arranged in casing, and described casing is provided with the earth terminal for lightning-protection module ground connection.Described lightning-protection module comprises the one-level lightning protection circuit, secondary lightning protection circuit and the three grades of lightning protection circuits that connect successively, and described one-level lightning protection circuit two ends are connected in parallel between zero line and live wire, the output of described three grades of lightning protection circuits and protected equipment connection; The number of described lightning protection passage is at least 40.Each passage independent design and not interfereing with each other, can be according to actual conditions, the quantity of access lightning protection passage, and the not passage of the access use that can backup, had both met the quantitative demand of engineering site and had also saved production cost.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (3)
1. lightning-protection module, it is characterized in that: comprise the one-level lightning protection circuit, secondary lightning protection circuit and the three grades of lightning protection circuits that connect successively, described one-level lightning protection circuit two ends are connected in parallel between zero line and live wire, the output of described three grades of lightning protection circuits and protected equipment connection; Described one-level lightning protection circuit comprises three utmost point gas discharge tubes, the one or two utmost point gas discharge tube, the two or two utmost point gas discharge tube, the first resistance and the second resistance; Described three utmost point gas discharge tubes are connected between zero line and live wire, and three electrodes of described three utmost point gas discharge tubes are respectively as the first electrode, the second electrode and third electrode, and described third electrode is connected with three grades of lightning protection circuits, third electrode ground connection; Two electrodes of described the one or two utmost point gas discharge tube are respectively as the 4th electrode and the 5th electrode, and two electrodes of described the two or two utmost point gas discharge tube are respectively as the 6th electrode and the 7th electrode; Described the 4th electrode is connected with the first electrode by the first resistance, and described the 7th electrode is connected with the second electrode by the second resistance, and described the 5th electrode is connected with the 6th electrode, and described the 4th electrode is connected with secondary lightning protection circuit respectively with the 7th electrode; Described the first electrode is connected with secondary lightning protection circuit by the first resistance, and described the second electrode is connected with secondary lightning protection circuit by the second resistance; Described secondary lightning protection circuit comprises two discharge tubes, and described the 4th electrode is connected with three grades of lightning protection circuits by a discharge tube respectively with the 7th electrode; Described three grades of lightning protection circuits comprise the first bipolar Transient Voltage Suppressor, the second bipolar Transient Voltage Suppressor and the 3rd bipolar Transient Voltage Suppressor; Described the first bipolar Transient Voltage Suppressor is connected in parallel on the two ends of secondary lightning protection circuit after connecting with the second bipolar Transient Voltage Suppressor, described the first bipolar Transient Voltage Suppressor is connected with the third electrode of three utmost point gas discharge tubes with the common port of the second bipolar Transient Voltage Suppressor, and described the 3rd bipolar Transient Voltage Suppressor is connected in parallel on the two ends of two utmost point lightning protection circuits; The electric current of secondary lightning protection circuit output is first through the first bipolar Transient Voltage Suppressor and the second bipolar Transient Voltage Suppressor the 3rd bipolar Transient Voltage Suppressor of flowing through again, and described the 3rd bipolar Transient Voltage Suppressor is connected in parallel on the two ends of protected equipment.
2. lightning-protection module according to claim 1, is characterized in that: the operation voltage of described three utmost point gas discharge tubes is about 75V to 140V, and the response time is less than 1ns; Described secondary lightning protection circuit adopts quick GDT, and the voltage passing through is clamped down on, and the response time is less than 150ms; Bipolar Transient Voltage Suppressor in described three grades of lightning protection circuits is controlled the electric current passing through, and is not more than 200mA by the electric current of whole lightning protection circuit.
3. lightning protection box, is characterized in that: comprise casing, lightning-protection module and be integrated in the lightning protection passage on lightning-protection module, described lightning-protection module is arranged in casing, and described casing is provided with the earth terminal for lightning-protection module ground connection; Described lightning-protection module comprises the one-level lightning protection circuit, secondary lightning protection circuit and the three grades of lightning protection circuits that connect successively, and described one-level lightning protection circuit two ends are connected in parallel between zero line and live wire, the output of described three grades of lightning protection circuits and protected equipment connection; Described one-level lightning protection circuit comprises three utmost point gas discharge tubes, the one or two utmost point gas discharge tube, the two or two utmost point gas discharge tube, the first resistance and the second resistance; Described three utmost point gas discharge tubes are connected between zero line and live wire, and three electrodes of described three utmost point gas discharge tubes are respectively as the first electrode, the second electrode and third electrode, and described third electrode is connected with three grades of lightning protection circuits, third electrode ground connection; Two electrodes of described the one or two utmost point gas discharge tube are respectively as the 4th electrode and the 5th electrode, and two electrodes of described the two or two utmost point gas discharge tube are respectively as the 6th electrode and the 7th electrode; Described the 4th electrode is connected with the first electrode by the first resistance, and described the 7th electrode is connected with the second electrode by the second resistance, and described the 5th electrode is connected with the 6th electrode, and described the 4th electrode is connected with secondary lightning protection circuit respectively with the 7th electrode; Described the first electrode is connected with secondary lightning protection circuit by the first resistance, and described the second electrode is connected with secondary lightning protection circuit by the second resistance; Described secondary lightning protection circuit comprises two discharge tubes, and described the 4th electrode is connected with three grades of lightning protection circuits by a discharge tube respectively with the 7th electrode; Described three grades of lightning protection circuits comprise the first bipolar Transient Voltage Suppressor, the second bipolar Transient Voltage Suppressor and the 3rd bipolar Transient Voltage Suppressor; Described the first bipolar Transient Voltage Suppressor is connected in parallel on the two ends of secondary lightning protection circuit after connecting with the second bipolar Transient Voltage Suppressor, described the first bipolar Transient Voltage Suppressor is connected with the third electrode of three utmost point gas discharge tubes with the common port of the second bipolar Transient Voltage Suppressor, and described the 3rd bipolar Transient Voltage Suppressor is connected in parallel on the two ends of two utmost point lightning protection circuits; The electric current of secondary lightning protection circuit output is first through the first bipolar Transient Voltage Suppressor and the second bipolar Transient Voltage Suppressor the 3rd bipolar Transient Voltage Suppressor of flowing through again, and described the 3rd bipolar Transient Voltage Suppressor is connected in parallel on the two ends of protected equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320839822.XU CN203645317U (en) | 2013-12-18 | 2013-12-18 | Anti-thunder module and anti-thunder box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320839822.XU CN203645317U (en) | 2013-12-18 | 2013-12-18 | Anti-thunder module and anti-thunder box |
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| Publication Number | Publication Date |
|---|---|
| CN203645317U true CN203645317U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320839822.XU Expired - Lifetime CN203645317U (en) | 2013-12-18 | 2013-12-18 | Anti-thunder module and anti-thunder box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203645317U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711985A (en) * | 2016-12-24 | 2017-05-24 | 大连尚能科技发展有限公司 | Circuit board used for preventing surge of signals |
| CN112970163A (en) * | 2018-11-09 | 2021-06-15 | 华为技术有限公司 | Protection circuit for protecting against transient currents, voltages or electrical energy |
-
2013
- 2013-12-18 CN CN201320839822.XU patent/CN203645317U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711985A (en) * | 2016-12-24 | 2017-05-24 | 大连尚能科技发展有限公司 | Circuit board used for preventing surge of signals |
| CN112970163A (en) * | 2018-11-09 | 2021-06-15 | 华为技术有限公司 | Protection circuit for protecting against transient currents, voltages or electrical energy |
| CN112970163B (en) * | 2018-11-09 | 2022-09-16 | 华为技术有限公司 | Protection circuit for protecting against transient currents, voltages or electrical energy |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |