CN110556779A - Modular reposition of redundant personnel strip is hit in lightning protection - Google Patents
Modular reposition of redundant personnel strip is hit in lightning protection Download PDFInfo
- Publication number
- CN110556779A CN110556779A CN201910691696.XA CN201910691696A CN110556779A CN 110556779 A CN110556779 A CN 110556779A CN 201910691696 A CN201910691696 A CN 201910691696A CN 110556779 A CN110556779 A CN 110556779A
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- CN
- China
- Prior art keywords
- strip
- metal
- shunt
- lightning protection
- button
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Details Of Aerials (AREA)
Abstract
The invention relates to the field of lightning protection of an airborne radar antenna housing, in particular to a combined lightning protection shunt strip. The shunting strip comprises two parts, namely a button type shunting strip and a metal shunting strip, wherein the central line of the button type shunting strip metal shunting strip is on the same straight line, the button type shunting strip is bonded on the electrical property working area on the surface of the radome, and the metal shunting strip is fixed on the non-electrical property working area on the surface of the radome through a fastener. The structure provided by the invention reduces the length of the button-type shunt strip section in the lightning protection shunt strip, so that the breakdown voltage of the shunt strip is greatly reduced; meanwhile, the influence on the transmission efficiency of the radome is less than 2%.
Description
Technical Field
The invention relates to the field of lightning protection of an airborne radar antenna housing, in particular to a combined lightning protection shunt strip.
background
Lightning can generate huge destruction action instantly by physical effects of strong current, hot high temperature, strong electromagnetic radiation, shock waves and the like, so that lightning disasters are caused. The radome is usually located at the front end or the tip end (head, tail, wing tip and other parts) of an airplane, is easy to be struck by lightning, and lightning protection measures must be taken.
At present, the lightning protection shunt strip of the common airborne radar antenna cover mainly comprises a solid metal strip and a button type shunt strip. The solid metal strip is completely made of metal materials, conducts current by means of the conductive characteristics of the materials, has low impedance when in work, and can be regarded as 0 in breakdown voltage, but the solid metal strip has heavy weight, has great influence on the electrical property of the lightning radome, and limits the application of the lightning radome on high-performance radar radomes; the button type shunt strip is mainly composed of a series of small-size metal buttons fixed on a resistive base strip, the electrical property is small, but the button gap air needs to be broken down to form ionization channel conduction current during working, the working impedance is high, the breakdown voltage is usually about (3-15) kV/m, the longer the length is, the more difficult the breakdown is, the protection range of a single shunt strip is greatly reduced, the number of shunt strips required by protection is increased, the influence on the electrical property is also increased, and the effect is particularly obvious in a large-size radome.
The electrical property of the radome develops towards the directions of broadband, high wave-transmitting rate and low phase fluctuation, the electrical property index is more and more strict, and the two traditional shunt strip forms can not adapt to the development of the radome performance. Two kinds of lightning protection that traditional airborne radar antenna house was used commonly divide the reposition of redundant personnel strip and can't compromise electrical property and lightning protection performance: the solid metal strip has low impedance but poor wave-transmitting property; the button-type shunt strip has good wave-transmitting characteristic but high impedance.
Disclosure of Invention
The purpose of the invention is as follows: the combined lightning protection shunt strip has low impedance and high wave-transmitting characteristics, can effectively reduce the breakdown voltage of the shunt strip, has the same high wave-transmitting characteristic as the existing button type shunt strip, and has both electrical property and lightning protection property.
The technical scheme is as follows: a combined lightning protection shunt strip comprises a button type shunt strip and a metal shunt strip.
The button type flow distribution strip comprises two parts of metal buttons and a base strip, the base strip fixes the buttons on a straight line and ensures that the distance between the adjacent buttons is the same, and the distance between the metal buttons is d 2.
Sealant can be added between the metal button and the base strip, so that the connection strength is enhanced, the gap is filled, and the anticorrosion effect is achieved.
The central line of the metal shunt strip of the button type shunt strip is on the same straight line, one end of the metal shunt strip is contacted with one end of the base strip, the distance between the last metal button of the button type shunt strip and the metal shunt strip is d1, and d1/d2 is (1-2); the parameter design is to prevent the button-type shunt strip from falling off or breaking due to overlarge impact force generated at the joint of the button-type shunt strip and the metal shunt strip in the process of conducting lightning current by the shunt strip.
During installation, the button type shunt strip is bonded to the electrical property working area on the surface of the radome, the metal shunt strip is fixed to the non-electrical property working area on the surface of the radome through the fasteners, the distance between the first fastener for fixing the metal shunt strip and the metal shunt strip is L, and L is less than or equal to 5 mm. Such parameters are designed to enhance the structural strength of the joint.
The contact end of the metal shunt strip and the button type shunt strip is arranged into a transition structure, and the structural design is that the shunt strip can better transmit current in the lightning current conducting process; and excessive impact force is generated at the joint of the button-type shunt strip and the metal shunt strip.
The metal buttons of the button type shunt strips are made of copper metal and metal materials with good conductivity; the surface is plated with an anti-corrosion coating. The base strip is a composite material structure with excellent insulating property and fire resistance.
The beneficial technical effects are as follows: the structure provided by the invention reduces the length of the button-type shunt strip section in the lightning protection shunt strip, so that the breakdown voltage of the shunt strip is greatly reduced; meanwhile, the influence on the transmission efficiency of the radome is less than 2%.
Drawings
FIG. 1 is a schematic structural view of a lightning protection shunt strip of the present invention,
Figure 2 is a side view of the present invention,
Description of numbering: 1-button type shunt strip, 2-metal shunt strip, 21-metal button, 22-base strip, 3-fastener and 4-radome.
Detailed Description
The combined low-impedance and high-wave-transmission lightning-proof shunt strip comprises a button type shunt strip 1 and a metal shunt strip 2.
The button type flow distribution strip 1 comprises two parts, namely a metal button 21 and a base strip 22, the base strip 22 and the metal button 21 are arranged on the same straight line, the distance between the adjacent buttons is guaranteed to be the same, and the distance between the metal buttons 21 is d 2.
And sealant can be added to strengthen the connection strength and fill gaps, so that the anti-corrosion effect is achieved.
The center line of the metal shunt strip 2 of the button type shunt strip 1 is on the same straight line, one end of the metal shunt strip 2 is contacted with one end of the base strip 22, the distance between the last metal button 21 of the button type shunt strip 1 and the metal shunt strip 2 is d1, and d1/d2 is 1-2; the parameter design is to prevent the button-type shunt strip from falling off or breaking due to overlarge impact force generated at the joint of the button-type shunt strip and the metal shunt strip in the process of conducting lightning current by the shunt strip.
During installation, the button type shunt strip 1 is bonded to the electrical property working area on the surface of the radome 4, the metal shunt strip 2 is fixed to the non-electrical property working area on the surface of the radome 4 through the fastener 3, the distance between the first fastener 3 for fixing the metal shunt strip 2 and the metal shunt strip 2 is L, and L is less than or equal to 5 mm. Such parameters are designed to enhance the structural strength of the joint.
The contact end of the metal shunt strip and the button type shunt strip is arranged into a transition structure, and the structural design is that the shunt strip can better transmit current in the lightning current conducting process; and excessive impact force is generated at the joint of the button-type shunt strip and the metal shunt strip.
The metal button 21 of the button-type shunt strip is made of copper metal and a metal material with good conductivity; the surface is plated with an anti-corrosion coating. The base strip 22 is a composite material structure excellent in insulation performance and fire resistance.
The structure provided by the invention reduces the length of the button-type shunt strip section in the lightning protection shunt strip, so that the breakdown voltage of the shunt strip is greatly reduced; meanwhile, the influence on the transmission efficiency of the radome is less than 2%.
Claims (9)
1. The utility model provides a modular shunting bar of preventing thunderbolt which characterized in that: the shunting strip comprises two parts, namely a button type shunting strip and a metal shunting strip, wherein the central line of the button type shunting strip metal shunting strip is on the same straight line, the button type shunting strip is bonded on the electrical property working area on the surface of the radome, and the metal shunting strip is fixed on the non-electrical property working area on the surface of the radome through a fastener.
2. The combined lightning protection shunt strip of claim 1, wherein: the button type flow distribution strip comprises two parts, namely a metal button and a base strip, wherein the base strip and the metal button are arranged on the same straight line, and the same distance between the adjacent buttons is ensured.
3. The combined lightning protection shunt strip of claim 2, wherein: and sealant is added between the metal button and the base strip.
4. The combined lightning protection shunt strip of claim 2, wherein: the distance between the metal buttons is d2, the distance between the last metal button of the button type shunt strip and the metal shunt strip is d1, and d1/d2 is (1-2).
5. The combined lightning protection shunt strip of claim 1, wherein: the distance between the first fastener for fixing the metal shunt strip and the metal shunt strip is L, and L is less than or equal to 5 mm.
6. The combined lightning protection shunt strip of claim 1, wherein: the contact end of the metal shunt strip and the button type shunt strip is set to be a transition structure.
7. The combined lightning protection shunt strip of claim 1, wherein: the metal button of the button type shunt strip is made of copper metal.
8. The combined lightning protection shunt strip of claim 7, wherein: the surface of the copper metal is plated with an anti-corrosion coating.
9. The combined lightning protection shunt strip of any one of claims 1 to 3, wherein: the base strip is a composite material structure with good insulating property and fire resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691696.XA CN110556779A (en) | 2019-07-26 | 2019-07-26 | Modular reposition of redundant personnel strip is hit in lightning protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691696.XA CN110556779A (en) | 2019-07-26 | 2019-07-26 | Modular reposition of redundant personnel strip is hit in lightning protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110556779A true CN110556779A (en) | 2019-12-10 |
Family
ID=68736813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910691696.XA Pending CN110556779A (en) | 2019-07-26 | 2019-07-26 | Modular reposition of redundant personnel strip is hit in lightning protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110556779A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212812A (en) * | 2021-04-30 | 2021-08-06 | 北京宇航系统工程研究所 | Self-dropping type lightning protection diversion strip of solid rocket |
| CN114336039A (en) * | 2022-03-01 | 2022-04-12 | 合肥航太电物理技术有限公司 | Arrangement method for combined lightning shunt strips of airplane radome |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6307149B1 (en) * | 1999-09-10 | 2001-10-23 | Fcc/Enforcement Bureau | Non-contaminating lightning protection system |
| JP2005050552A (en) * | 2003-07-29 | 2005-02-24 | Dainippon Printing Co Ltd | Organic el display device |
| CN102545063A (en) * | 2012-02-23 | 2012-07-04 | 西安爱邦电磁技术有限责任公司 | Sectional type lightning guide strip and manufacturing method thereof |
| CN103515709A (en) * | 2013-10-23 | 2014-01-15 | 哈尔滨工业大学 | Infrared radiation transmitting microstrip antenna based on random mesh and infrared transmitting semiconductor |
| CN207134806U (en) * | 2017-08-07 | 2018-03-23 | 江苏高泰电气有限公司 | A kind of photovoltaic lightningproof header box |
| CN109490841A (en) * | 2018-07-13 | 2019-03-19 | 中国航空工业集团公司济南特种结构研究所 | A kind of radome electrical bonding structure |
| CN109861158A (en) * | 2018-12-07 | 2019-06-07 | 中国航空工业集团公司济南特种结构研究所 | A kind of anti-lightning strike shunt bar of combined type |
-
2019
- 2019-07-26 CN CN201910691696.XA patent/CN110556779A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6307149B1 (en) * | 1999-09-10 | 2001-10-23 | Fcc/Enforcement Bureau | Non-contaminating lightning protection system |
| JP2005050552A (en) * | 2003-07-29 | 2005-02-24 | Dainippon Printing Co Ltd | Organic el display device |
| CN102545063A (en) * | 2012-02-23 | 2012-07-04 | 西安爱邦电磁技术有限责任公司 | Sectional type lightning guide strip and manufacturing method thereof |
| CN103515709A (en) * | 2013-10-23 | 2014-01-15 | 哈尔滨工业大学 | Infrared radiation transmitting microstrip antenna based on random mesh and infrared transmitting semiconductor |
| CN207134806U (en) * | 2017-08-07 | 2018-03-23 | 江苏高泰电气有限公司 | A kind of photovoltaic lightningproof header box |
| CN109490841A (en) * | 2018-07-13 | 2019-03-19 | 中国航空工业集团公司济南特种结构研究所 | A kind of radome electrical bonding structure |
| CN109861158A (en) * | 2018-12-07 | 2019-06-07 | 中国航空工业集团公司济南特种结构研究所 | A kind of anti-lightning strike shunt bar of combined type |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212812A (en) * | 2021-04-30 | 2021-08-06 | 北京宇航系统工程研究所 | Self-dropping type lightning protection diversion strip of solid rocket |
| CN114336039A (en) * | 2022-03-01 | 2022-04-12 | 合肥航太电物理技术有限公司 | Arrangement method for combined lightning shunt strips of airplane radome |
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Application publication date: 20191210 |
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| RJ01 | Rejection of invention patent application after publication |