CN202856344U - DC blocking type low residual pressure gas tube lightning arrester - Google Patents
DC blocking type low residual pressure gas tube lightning arrester Download PDFInfo
- Publication number
- CN202856344U CN202856344U CN 201220488736 CN201220488736U CN202856344U CN 202856344 U CN202856344 U CN 202856344U CN 201220488736 CN201220488736 CN 201220488736 CN 201220488736 U CN201220488736 U CN 201220488736U CN 202856344 U CN202856344 U CN 202856344U
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- shell
- female
- gas tube
- lightning arrester
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Abstract
The utility model provides a DC blocking type low residual pressure gas tube lightning arrester comprising a screw sleeve, a male shell, a female shell, an upper shell, a lower shell, female insulators, a pin, a chip capacitor, a gas tube, and a copper piece. The male shell and the female shell are respectively positioned at a front end and a back end of the lightning arrester. The upper shell and the lower shell are fixed between the male shell and the female shell and are mutually buckled together. The screw sleeve is tightly screwed on an outer ring surface of the male shell. The pin comprises a front pin and a back pin which are respectively in central holes of the male shell and the female shell and are separated from the male shell and the female shell through two female insulators. The chip capacitor is fixed on a back end outer side face of the front pin and is in contact with an end face of a female insulator. The gas tube is positioned in a central hole formed between the upper shell and the lower shell and is fixed on the upper shell. The front pin, the chip capacitor and the gas tube are connected through a conductor. The DC blocking type low residual pressure gas tube lightning arrester has the advantages of simple structure, convenient installation, capability of effectively reducing the residual voltage, good lightning protection effect and high safety performance.
Description
Technical field
The utility model relates to a kind of lightning arrester, relates in particular to a kind of DC blocking type low residual voltage gas tube lightning arrester, is mainly used in mobile communication base station antenna-feedback system and TV band and part broadcast band and exempts from the lightning surge attack.
Background technology
Lightning arrester be a kind of can discharge thunder and lightning or hold concurrently can discharge power system operation overvoltage energy, the protection electrical equipment is avoided instantaneous overvoltage harm, can block afterflow again, the unlikely electrical installation that causes the system earth short circuit.Lightning arrester is connected between live wire and the ground usually, and is in parallel with protected equipment.When overvoltage value reached the operation voltage of regulation, lightning arrester moved immediately, flow through electric charge, and the over-voltage amplitude is protected apparatus insulated; After magnitude of voltage was normal, lightning arrester restored to the original state rapidly again, to guarantee system's normal power supply.The gas expulsion type arrester is a kind of in the numerous kinds lightning arrester, present gas expulsion type arrester has two kinds of structures: a kind of is coaxial-type, a kind of is T word formula, it is exactly that residual voltage is too large that these two kinds of structures have a shortcoming, can reach about 1000V, easily cause device damage, and the inner wire direct current is path.
Summary of the invention
The utility model provides a kind of DC blocking type low residual voltage gas tube lightning arrester for addressing the above problem, and this lightning arrester can effectively reduce residual voltage, and lightning-arrest effective, security performance is high.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of DC blocking type low residual voltage gas tube lightning arrester, comprise swivel nut, public shell, female shell, upper shell, lower casing, female insulator, contact pin, patch capacitor, flue, copper sheet, described public shell, female shell lays respectively at the front and back end of described lightning arrester, described upper shell, lower casing is fixed in public shell, also mutually snap together between female shell, described swivel nut is tightened in surface, public shell outer ring, described contact pin comprises front contact pin, rear contact pin, lay respectively at public shell, in female shell centre bore, and by two female insulators and male shell, female shell separates; Described patch capacitor is fixed on the lateral surface of front contact pin rear end and with female insulator end face and contacts, in the centre bore that described flue forms between upper and lower shell and be fixed on the shell, link to each other by conductor between described front contact pin, patch capacitor, the flue; In the centre bore that described copper sheet forms between upper and lower shell and after being fixed on the contact pin.
Described flue is fixed on the upper shell by bolt, support, also is rotary with nut, bullet pad on described bolt, and described bullet pad is positioned at the nut below.
Be rotary with nut, bullet pad on surface, described female shell outer ring, described bullet pad is positioned at a side of nut.
Between the surface, outer ring of described public shell and swivel nut, be embedded with the embedding spring, between the end of described public shell and swivel nut, plain cushion arranged.
Described upper shell, lower casing are screwed on public shell.
Described upper and lower shell is fixed on the flange end face of female shell, is fixed with sealing gasket in the other end of the flange of described female shell.
For increasing the sensitivity of conduction, the conductor between described front contact pin, patch capacitor, the flue is scolding tin.
Bullet pad on the described bolt is flower bullet pad.
Operation principle of the present utility model: breakdown current is flowed into by front contact pin, because capacitance voltage can not suddenly change, then capacitor charging punctures, gas in the gas breakdown pipe, make flue impact peak value lower voltage, accelerate the flue response time, form electrical short, thereby the reduction residual voltage plays lightning protection function.
The utility model is simple in structure, and is easy for installation, can effectively reduce residual voltage, and lightning-arrest effective, security performance is high.
Description of drawings
Fig. 1 is cross section structure schematic diagram of the present utility model.
Fig. 2 is fundamental diagram of the present utility model.
Among the figure: swivel nut 1, male shell 2, female shell 3, flange 3-1, upper shell 4, lower casing 5, female insulator 6, patch capacitor 7, flue 8, copper sheet 9, screw 10, front contact pin 11, rear contact pin 12, centre bore 13, bolt 14, support 15, conductor 16, nut 17, bullet pad 18, embedding spring 19, plain cushion 20, sealing gasket 21.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 1, a kind of DC blocking type low residual voltage gas tube lightning arrester comprises swivel nut 1, male shell 2, female shell 3, upper shell 4, lower casing 5, female insulator 6, contact pin, patch capacitor 7, flue 8, copper sheet 9.
Surface, outer ring at public shell 2 is rotary with swivel nut 1; Contact pin comprises front contact pin 11, rear contact pin 12, lays respectively in male shell 2, female shell 3 centre bores, and separates by two female insulators 6 and male outer 2 shells, female shell 3; Patch capacitor 7 is fixed on the front contact pin 11 rear end lateral surfaces and with female insulator 6 end faces and contacts.
In the centre bore 13 that forms between upper and lower shell 4,5 flue 8 is arranged, flue 8 is fixed on the upper shell 4 by bolt 14, support 15; Link to each other by conductor 16 between front contact pin 11, patch capacitor 7, the flue 8, the present embodiment conductor 16 is scolding tin; Copper sheet 9 is arranged in centre bore 13 and is fixed on the rear contact pin 12.
Also be rotary with nut 17, bullet pad 18 on bolt 14, the bullet pad 18 on this bolt 14 of the present embodiment is flower bullet pad; Be rotary with nut 17, bullet pad 18 on surface, female shell 3 outer ring.
Between surface, the outer ring of public shell 2 and swivel nut 1, be embedded with embedding spring 19, between the end of public shell 2 and swivel nut 1, plain cushion 20 arranged; Other end at the flange 3-1 of female shell 3 is fixed with sealing gasket 21.
Referring to Fig. 2, when breakdown current enters (through scolding tin conductor 16) from RF in end (contact pin 11 namely), owing to be C among patch capacitor 7(Fig. 2) be GDT among charging gas breakdown pipe 8(Fig. 2), formation is to electrical short, can block electric current at RF out end, thereby the reduction residual voltage plays lightning protection function.The present embodiment patch capacitor 7 is the electric capacity that 2000pF, 1000V are withstand voltage.
The utility model is simple in structure, and is easy for installation, can effectively reduce residual voltage, and lightning-arrest effective, security performance is high.
Claims (8)
1. DC blocking type low residual voltage gas tube lightning arrester, it is characterized in that: comprise swivel nut, public shell, female shell, upper shell, lower casing, female insulator, contact pin, patch capacitor, flue, copper sheet, described public shell, female shell lays respectively at the front and back end of described lightning arrester, described upper shell, lower casing is fixed in public shell, also mutually snap together between female shell, described swivel nut is tightened in surface, public shell outer ring, described contact pin comprises front contact pin, rear contact pin, lay respectively at public shell, in female shell centre bore, and by two female insulators and male shell, female shell separates; Described patch capacitor is fixed on the lateral surface of front contact pin rear end and with female insulator end face and contacts, in the centre bore that described flue forms between upper and lower shell and be fixed on the shell, link to each other by conductor between described front contact pin, patch capacitor, the flue; In the centre bore that described copper sheet forms between upper and lower shell and after being fixed on the contact pin.
2. DC blocking type low residual voltage gas tube lightning arrester according to claim 1, it is characterized in that: described flue is fixed on the upper shell by bolt, support, also is rotary with nut, bullet pad on described bolt, and described bullet pad is positioned at the nut below.
3. DC blocking type low residual voltage gas tube lightning arrester according to claim 1, it is characterized in that: be rotary with nut, bullet pad on surface, described female shell outer ring, described bullet pad is positioned at a side of nut.
4. DC blocking type low residual voltage gas tube lightning arrester according to claim 1 is characterized in that: be embedded with the embedding spring between the surface, outer ring of described public shell and swivel nut, between the end of described public shell and swivel nut plain cushion arranged.
5. DC blocking type low residual voltage gas tube lightning arrester according to claim 1 and 2, it is characterized in that: described upper shell, lower casing are screwed on public shell.
6. according to claim 1 or 3 described DC blocking type low residual voltage gas tube lightning arresters, it is characterized in that: described upper and lower shell is fixed on the flange end face of female shell, is fixed with sealing gasket in the other end of the flange of described female shell.
7. DC blocking type low residual voltage gas tube lightning arrester according to claim 1 and 2, it is characterized in that: the conductor between described front contact pin, patch capacitor, the flue is scolding tin.
8. DC blocking type low residual voltage gas tube lightning arrester according to claim 2 is characterized in that: the bullet pad on the described bolt is flower bullet pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220488736 CN202856344U (en) | 2012-09-24 | 2012-09-24 | DC blocking type low residual pressure gas tube lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220488736 CN202856344U (en) | 2012-09-24 | 2012-09-24 | DC blocking type low residual pressure gas tube lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856344U true CN202856344U (en) | 2013-04-03 |
Family
ID=47987502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220488736 Expired - Fee Related CN202856344U (en) | 2012-09-24 | 2012-09-24 | DC blocking type low residual pressure gas tube lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856344U (en) |
-
2012
- 2012-09-24 CN CN 201220488736 patent/CN202856344U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20160924 |