CN201654107U - Online monitor for explosion-proof type lightning arrester - Google Patents
Online monitor for explosion-proof type lightning arrester Download PDFInfo
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- CN201654107U CN201654107U CN201020121352XU CN201020121352U CN201654107U CN 201654107 U CN201654107 U CN 201654107U CN 201020121352X U CN201020121352X U CN 201020121352XU CN 201020121352 U CN201020121352 U CN 201020121352U CN 201654107 U CN201654107 U CN 201654107U
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Abstract
The utility model relates to an online monitor for a lightning arrester, in particular to an online monitor for an explosion-proof type lightning arrester, which comprises an insulation piece, a mounting and grounding soleplate, sealing rubber, a metal oxide resistance card, a resistance card grounding electrode and a monitor electrical element and is characterized by also comprising an external high-pressure clearance part, a grounding clearance sheet part and explosion-proof rubber; a screw rod of a T-shaped bolt passes through the sealing rubber, the mounting and grounding soleplate and the insulation piece in sequence; the external high-pressure clearance part is fixed on the insulation part through a locking nut; the bottom end of the mounting and grounding soleplate is grounded; the upper end of the grounding clearance sheet part is fixed between the insulation piece and the mounting and grounding soleplate, and the lower end thereof is tightly clung to the inner side of the explosion-proof rubber; the explosion-proof rubber is adhered into a hole at the lower end of the mounting and grounding soleplate; and the distance of an external discharge clearance formed between the lower end of the external high-pressure clearance part and the outer side of the grounding clearance sheet part is 2-5 millimeter. The online monitor for the explosion-proof type lightning arrester has the function of preventing the explosion of the online monitor for the explosion-proof type lightning arrester.
Description
Technical field
The utility model relates to a kind of lightning arrester on-line monitoring device, particularly a kind of explosion-proof type lightning arrester on-line monitoring device.
Background technology
Lightning arrester on-line monitoring device is to be connected between lightning arrester low pressure end and the ground, is used for monitoring variation, the action frequency of leakage current of an arrester and a kind of equipment of reporting.Be applicable to the operational monitoring of the various electric pressure Zinc-Oxide Arrester of electric system lightning arrester.Lightning arrester on-line monitoring device mainly is made up of non-linear resistance, message register, milliammeter, electronic devices and components, structurally adopts shell and base plate with all component package inside, and shell and base plate play electric shield and ground connection effect.
Along with being extensive use of of lightning arrester on-line monitoring device, but its design defect significantly comes out.According to the 6.4th of GB GB11032-2000 " AC system metal oxide arrester "; rated voltage 42 kV and above lightning arrester and protection generator should have pressure relief device with lightning arrester; protection lightning arrester shell does not produce comminuted blast, prevents power equipment or personnel work the mischief on every side.Because lightning arrester on-line monitoring device is to be connected between lightning arrester and the ground, when lightning arrester has broken down short-circuit current when flowing through, this short-circuit current flows through lightning arrester on-line monitoring device equally, when big power current flows through lightning arrester on-line monitoring device, metal oxide resistance in the lightning arrester on-line monitoring device can not bear that bigger power current at first punctures or the side flashover, short-circuit current is at very big gas and the heat of the inner generation of lightning arrester on-line monitoring device, when pressure increased to certain value in lightning arrester on-line monitoring device, the shell of lightning arrester on-line monitoring device can be blasted.Although lightning arrester has explosion prevention function; when bigger short-circuit current flows through lightning arrester and lightning arrester on-line monitoring device; the explosion-proof device protection lightning arrester of lightning arrester does not explode; but because common lightning arrester on-line monitoring device does not have blast resistance construction; so lightning arrester on-line monitoring device can be blasted; endanger near the safety of other electric equipment (or personnel), can cause the major accident of electric system equally.
Summary of the invention
The purpose of this utility model provides a kind of explosion-proof type lightning arrester on-line monitoring device; it has improved common lightning arrester on-line monitoring device version; prevent that lightning arrester on-line monitoring device from blasting; effectively protect near the safety of other electric equipment (or personnel) the lightning arrester on-line monitoring device, avoided the major accident of the electric system that causes thus.
The technical solution of the utility model is: design a kind of explosion-proof type lightning arrester on-line monitoring device, it comprises web member, insulating part, the ground connection base plate is installed, sealed rubber, metal oxide resistance, the resistor disc ground-electrode, the monitor electrical equipment, message register, milliammeter, shell, it is characterized in that: further comprising high pressure external series gap parts, ground connection spacer shims parts, explosion-proof rubber, the screw rod of T type screw passes sealed rubber successively, the ground connection base plate is installed, insulating part, by set nut high pressure external series gap parts are fixed on the insulating part, the bottom ground connection of ground connection base plate is installed; The upper end of ground connection spacer shims parts is fixed on insulating part and installs between the ground connection base plate, and explosion-proof rubber inboard is close in the lower end of ground connection spacer shims parts, and explosion-proof rubber is bonded in the hole that ground connection base plate lower end is installed; Be installed with metal oxide resistance between the head of screw of T type screw and the resistor disc ground-electrode, the resistor disc ground-electrode is fixedlyed connected with installation ground connection base plate upper end.
Form the external discharge gap between the outside of the lower end of described high pressure external series gap parts and ground connection spacer shims parts.
The distance that forms the external discharge gap between the outside of the lower end of described high pressure external series gap parts and ground connection spacer shims parts is the 2-5 millimeter.
Described ground connection spacer shims parts are elastic sheet metals.
The utility model characteristics are: explosion-proof type lightning arrester on-line monitoring device is to increase high pressure external series gap parts and ground connection spacer shims parts on common lightning arrester on-line monitoring device, explosion-proof rubber, when the gap between high pressure external series gap parts and the ground connection spacer shims parts can be flow through explosion-proof type lightning arrester on-line monitoring device at the power frequency short-circuit current of lightning arrester, a kind of situation is that they can discharge by generation electric arc in the gap automatically, another kind of situation is when discharge failure automatically, explosion-proof rubber outwards moves ground connection spacer shims parts is upspring and the lower end contact discharge of high pressure external series gap parts under pressure control, be that its inside does not produce high temperature and high pressure gas, prevent that explosion accident from taking place, thereby reach explosion prevention function.Explosion-proof type lightning arrester on-line monitoring device is except that having explosion prevention function, and it also has and the identical original performance of common lightning arrester on-line monitoring device.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:
Fig. 1 example structure synoptic diagram.
Among the figure: 1, high pressure external series gap parts; 2, ground connection spacer shims parts; 3 explosion-proof rubbers; 4, T type screw; 5, set nut; 6, insulating part; 7, the ground connection base plate is installed; 8, sealed rubber; 9, metal oxide resistance; 10, resistor disc ground-electrode; 11, monitor electrical equipment, 12, message register; 13, milliammeter; 14, shell.
Embodiment
As shown in Figure 1: explosion-proof type lightning arrester on-line monitoring device comprises T type screw 4, set nut 5, insulating part 6, ground connection base plate 7 is installed, sealed rubber 8, metal oxide resistance 9, resistor disc ground-electrode 10, monitor electrical equipment 11, message register 12, milliammeter 13, shell 14, it is characterized in that: further comprising high pressure external series gap parts 1, ground connection spacer shims parts 2, explosion-proof rubber 3, the screw rod of T type screw 4 passes sealed rubber 8 successively, ground connection base plate 7 is installed, insulating part 6, by set nut 5 high pressure external series gap parts 1 are fixed on the insulating part 6, the bottom ground connection of ground connection base plate 7 is installed; The upper end of ground connection spacer shims parts 2 is fixed on insulating part 6 and installs between the ground connection base plate 7, explosion-proof rubber 3 inboards are close in the lower end of ground connection spacer shims parts 2, explosion-proof rubber 3 is bonded in the hole that ground connection base plate 7 lower ends are installed, and wherein ground connection spacer shims parts 2 are elastic sheet metals; Being installed with metal oxide resistance 9 between the head of screw of T type screw 4 and the resistor disc ground-electrode 10, fixedlys connected with installation ground connection base plate 7 upper ends in resistor disc ground-electrode 10 upper ends; Monitor electrical equipment 11, message register 12, milliammeter 13 are installed in the housing of the sealing of being made up of installation ground connection base plate 7 and shell 14.
When normal current passes through explosion-proof type lightning arrester on-line monitoring device, electric current is by high pressure external series gap parts 1, T type screw 4, arrive installation ground connection base plate 7 ground connection with resistor disc ground-electrode 10 again through metal oxide resistance 9, between high pressure external series gap parts 1 and the ground connection spacer shims parts 2 do not discharge in 2-5 millimeter gap, do not influence other performance of explosion-proof type lightning arrester on-line monitoring device.When the big short-circuit current of lightning arrester flows through explosion-proof type lightning arrester on-line monitoring device, the outer gap that high pressure external series gap parts 1 and ground connection spacer shims parts 2 constitute produces arc discharge, directly, can not cause the interior temperature, pressure of shell of explosion-proof type lightning arrester on-line monitoring device too high by ground connection base plate 7 ground connection are installed; When causing the gap discharge failure because of air drying etc., short-circuit current by high pressure external series gap parts 1, T type screw 4, through metal oxide resistance 9 with and resistor disc ground-electrode 10 at the inner pressure that produces of explosion-proof type lightning arrester on-line monitoring device, explosion-proof rubber 3 was stressed outwards to move ground connection spacer shims parts 2 and high pressure external series gap parts 1 lower end was contacted this moment.Short-circuit current promptly directly arrives by high pressure external series gap parts 1 and ground connection spacer shims parts 2 ground connection base plate 7 ground connection is installed, avoid at the inner generation high temperature and high pressure gas that continues of explosion-proof type lightning arrester on-line monitoring device, prevent that explosion accident from taking place, thereby reach explosion prevention function, equally also do not influence its other electric property.If use common lightning arrester on-line monitoring device, when the lightning arrester short-circuit current passes through metal oxide resistance 9, can make its heating damage (puncturing or the side flashover), produce electric arc and high temperature and high pressure gas, its shell 14 can pop, other electric equipment or personnel's safety around inner member and shell fragment can fly out and endanger.
Claims (4)
1. explosion-proof type lightning arrester on-line monitoring device, it comprises web member, insulating part (6), ground connection base plate (7), sealed rubber (8), metal oxide resistance (9), resistor disc ground-electrode (10), monitor electrical equipment (11), message register (12), milliammeter (13), shell (14) is installed; It is characterized in that: further comprising high pressure external series gap parts (1), ground connection spacer shims parts (2), explosion-proof rubber (3), the screw rod of T type screw (4) passes sealed rubber (8) successively, ground connection base plate (7), insulating part (6) is installed, by set nut (5) high pressure external series gap parts (1) are fixed on the insulating part (6), the bottom ground connection of ground connection base plate (7) is installed; The upper end of ground connection spacer shims parts (2) is fixed on insulating part (6) and installs between the ground connection base plate (7), explosion-proof rubber (3) inboard is close in the lower end of ground connection spacer shims parts (2), and explosion-proof rubber (3) is bonded in the hole that ground connection base plate (7) lower end is installed; Be installed with metal oxide resistance (9) between the head of screw of T type screw (4) and the resistor disc ground-electrode (10), resistor disc ground-electrode (10) is fixedlyed connected with installation ground connection base plate (7) upper end.
2. according to the described explosion-proof type lightning arrester of claim 1 on-line monitoring device, it is characterized in that: form the external discharge gap between the outside of the lower end of described high pressure external series gap parts (1) and ground connection spacer shims parts (2).
3. according to the described explosion-proof type lightning arrester of claim 2 on-line monitoring device, it is characterized in that: the distance that forms the external discharge gap between the outside of the lower end of described high pressure external series gap parts (1) and ground connection spacer shims parts (2) is the 2-5 millimeter.
4. according to the described explosion-proof type lightning arrester of claim 1 on-line monitoring device, it is characterized in that: described ground connection spacer shims parts (2) are elastic sheet metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020121352XU CN201654107U (en) | 2010-03-02 | 2010-03-02 | Online monitor for explosion-proof type lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020121352XU CN201654107U (en) | 2010-03-02 | 2010-03-02 | Online monitor for explosion-proof type lightning arrester |
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| Publication Number | Publication Date |
|---|---|
| CN201654107U true CN201654107U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020121352XU Expired - Fee Related CN201654107U (en) | 2010-03-02 | 2010-03-02 | Online monitor for explosion-proof type lightning arrester |
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| Country | Link |
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| CN (1) | CN201654107U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297587A (en) * | 2014-09-25 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve lightning arrester monitoring device and method |
| CN104360132A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Contact resistance live line measurement device |
| CN104820160A (en) * | 2015-05-08 | 2015-08-05 | 宁夏中科天际防雷技术有限公司 | Lightning protection grounding test system |
-
2010
- 2010-03-02 CN CN201020121352XU patent/CN201654107U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297587A (en) * | 2014-09-25 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve lightning arrester monitoring device and method |
| CN104297587B (en) * | 2014-09-25 | 2018-05-04 | 许继电气股份有限公司 | A kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method |
| CN104360132A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Contact resistance live line measurement device |
| CN104820160A (en) * | 2015-05-08 | 2015-08-05 | 宁夏中科天际防雷技术有限公司 | Lightning protection grounding test system |
| CN104820160B (en) * | 2015-05-08 | 2017-10-13 | 宁夏中科天际防雷股份有限公司 | Lightning protection test system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120302 |