CN200941108Y - Splitting resistance-card voltage on-line detector - Google Patents
Splitting resistance-card voltage on-line detector Download PDFInfo
- Publication number
- CN200941108Y CN200941108Y CN 200620079695 CN200620079695U CN200941108Y CN 200941108 Y CN200941108 Y CN 200941108Y CN 200620079695 CN200620079695 CN 200620079695 CN 200620079695 U CN200620079695 U CN 200620079695U CN 200941108 Y CN200941108 Y CN 200941108Y
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- China
- Prior art keywords
- resistor disc
- pressure
- housing
- split type
- line monitor
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Thermistors And Varistors (AREA)
Abstract
This utility model relates to a device for monitoring the operation of MOA online, specifically an online monitoring device with split resistance plate pressure, mainly to solve the problems of the high voltage, difficulty in observing and contamination of a permeable surface window caused by the prior art. The device comprises a shell and a signal acquisition device 3 which is arranged on the shell and uses the resistance plate to tap pressure, a signal processing device 4 and a display device 8. The device is characterized in that the shell is actually two smaller separate shells, a shell 2 and a shell 7 which are connected through a signal connecting line 6. The shell 2 is provided with the signal acquisition device 3 which uses the resistance plate to tap pressure, the signal processing device 4, a pressure limiting devices 5 inside and a lead-in line end on the sides. The shell 7 is provided with the display device 8. This device can be applied to monitor the current leakage of the MOA online and count the actions of the MOA.
Description
Technical field
The utility model relates to a kind of device of on-line monitoring lightning arrester operation conditions, is a kind of split type resistor disc pressure on-Line Monitor Device specifically.
Background technology
Lightning arrester is to be used for AC and DC power system, and the protection power equipment is avoided the important device of superpotential infringement, and its reliability service directly has influence on the safe operation of electric system.Adopting the lightning arrester on-Line Monitor Device of resistor disc pressure at present all is to be made of a housing, and signal pickup assembly, signal processing apparatus and the display device that adopts the resistor disc pressure is equipped with in inside.Be connected on during use on the lightning arrester, make lightning arrester pass through ground connection after the on-Line Monitor Device, thereby realize the function of record lightning arrester action frequency and/or monitoring leakage current of an arrester.Its shortcoming is: at first, adopt the on-Line Monitor Device of resistor disc pressure to constitute by a housing and installing each several part within it, can only be installed near the high-voltage region of lightning arrester, when lightning arrester absorbs superpotential, on-Line Monitor Device can produce the voltage of about 3kV, position detections that must be beyond 3～4 meters even 10 meters, very inconvenient; Secondly, be exactly the resistor disc pressure on-Line Monitor Device that outdoor lightning arrester uses, the surface perspective window of its display device is easy to generate filth, does not often see Chu.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of above-mentioned background technology and provides a kind of and can realize closely observing and split type resistor disc pressure on-Line Monitor Device that display device can be separated installation.This device can be monitored the lightning arrester action frequency, also can monitor lightning arrester action frequency and leakage current simultaneously.
For finishing above-mentioned purpose, technical solution provided by the utility model is: a kind of split type resistor disc pressure on-Line Monitor Device, comprise housing and the signal pickup assembly 3 that is installed in the employing resistor disc pressure in the housing, signal processing apparatus 4 and display device 8, its special character is: described housing is two independently housing 2 and housings 7, be equiped with the signal pickup assembly 3 that adopts the resistor disc pressure in the described housing 2, signal processing apparatus 4 and pressure limiting device 5, its side is provided with end of incoming cables 1, be equiped with display device 8 in the described housing 7, be connected by signal connecting line 6 between described housing 2 and the housing 7.
Can be equiped with three described in the above-mentioned technical solution in the housing 2 and overlap signal pickup assembly 3, signal processing apparatus 4 and the pressure limiting device 5 that independently adopts the resistor disc pressure, its side is provided with three ends of incoming cables 1, then is equiped with corresponding 3 in the described housing 7 and overlaps independently display device 8.Can be combined into like this three resistor disc pressure on-Line Monitor Device that lightning arrester is monitored simultaneously in the three-phase current.In like manner, can also be equiped with a cover, two overlaps or many covers independently adopt the resistor disc pressure more than three signal pickup assembly 3, signal processing apparatus 4 and pressure limiting device 5 in the described housing 2, then be equiped with in the described housing 7 corresponding tricks display device 8 independently, its side is provided with the terminals 1 of corresponding number.
Resistor disc in the signal pickup assembly 3 of the resistor disc of employing described in above-mentioned technical solution pressure can be the semiconductor ceramics element, as metal oxide non-linear resistor, silicon carbide nonlinear resistor sheet, also can be the resistor disc of other versions.But with the semiconductor ceramics element, especially the metal oxide non-linear resistor is good.
During use, the leading-out terminal of lightning arrester and the end of incoming cables 1 usefulness insulated conductor of housing 2 are coupled together, by housing 2 earthings of casing, housing 7 is installed in addition is convenient to the zone that the staff closely observes, again housing 2 is connected with housing 7 usefulness signal connecting lines 6, can realizes online detection lightning arrester.
The advantage that the utility model is compared background technology is: 1, be provided with two independently housing 2 and housings 7, display device 8 is installed in the housing 7, and before a pressure limiting device 5 is set, can be implemented in the closely safety observation of line detector; 2, display device 8 can be installed on indoorly, so both can avoid its surface perspective window to be easy to produce filthy problem, and be convenient to lightning arrester is carried out effectively monitoring in real time.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the utility model.
Fig. 2 is the circuit theory synoptic diagram of first embodiment of the utility model.
Fig. 3 is the structural representation of second embodiment of the utility model.
Being described as follows of each label among the figure:
The 1-end of incoming cables, 2-housing, 3-signal pickup assembly, 4-signal processing apparatus, 5-pressure limiting device, 6-signal connecting line, 7-housing, 8-display device.
Embodiment
In structural representation shown in Figure 1, this split type resistor disc pressure on-Line Monitor Device comprises housing 2 and housing 7, be equiped with the signal pickup assembly 3, signal processing apparatus 4 and the pressure limiting device 5 that adopt the resistor disc pressure in the housing 2, display device 8 is housed in the housing 7, is used to show lightning arrester action frequency and leakage current.During use, the end of incoming cables 1 usefulness insulated conductor of the leading-out terminal of lightning arrester and housing 2 couples together, and by housing 2 earthings of casing, housing 7 is installed in addition is convenient to the zone that the staff closely observes.In high-tension switch cabinet, at this moment, housing 7 can be installed in the front panel control operation zone of switch cubicle; Perhaps when being used for outdoor lightning arrester, housing 7 can be installed in indoor, again housing 2 is connected with housing 7 usefulness signal connecting lines 6.
With reference to circuit theory synoptic diagram and Fig. 1 shown in Figure 2, signal pickup assembly 3 is made of resistor disc U1, this resistor disc U1 adopts the metal oxide non-linear resistor, signal processing apparatus 4 is made of rectifier Z, capacitor C and resistance R 1, pressure limiting device 5 is made of piezoresister U2, and display device 8 is made of message register JS, milliammeter mA, resistance R 2 and stabilivolt DW.During use, adopt resistor disc U1 acquired signal, after process rectifier Z, capacitor C and 1 pair of signal of resistance R are handled, through piezoresister U2 pressure limiting, to prevent that high voltage from scurrying in the housing 7 by signal connecting line, transfer signals in the display device 8 by signal connecting line 6 again.Because the signal of gathering is through handling, and through pressure limiting, the signal voltage that is transferred to display device 8 is no more than 150V, thus display device 8 just can be installed on the staff can be at 0.5m with the interior zone of closely observing.
In structural representation shown in Figure 3, be equiped with three in the housing 2 of this split type resistor disc pressure on-Line Monitor Device and overlap signal pickup assembly 3, signal processing apparatus 4 and the pressure limiting device 5 that independently adopts the resistor disc pressure, then be equiped with corresponding three cover independent displaying devices 8 in the housing 7, couple together one to one by 3 cover signal connecting lines 6 again between two housings, be combined into three split type resistor disc pressure on-Line Monitor Device that lightning arrester is monitored simultaneously in the three-phase current.The structure of this embodiment remainder is then identical with embodiment one.
When operate as normal, the resistance of resistor disc U1 is very big, and the leakage current of lightning arrester transfers signals in the housing 7 after rectifier Z, capacitor C and resistance R 1 rectification are handled, and finishes demonstration to leakage current by display device 8; When superpotential takes place when, resistor disc U1 is low resistance state, the big electric current of lightning arrester is flowed into the earth, the pulse voltage that this big electric current produces by resistor disc U1 the time, after rectifier Z, capacitor C and resistance R 1 rectification processing, transfer signals in the housing 7, by the demonstration of display device 8 execution number of times, thereby realize record lightning arrester action frequency and the function of monitoring leakage current of an arrester.
Claims (9)
1. split type resistor disc pressure on-Line Monitor Device, comprise housing and the signal pickup assembly (3) that is installed in the employing resistor disc pressure in the housing, signal processing apparatus (4) and display device (8), it is characterized in that: described housing is two independently housing (2) and housings (7), be equiped with the signal pickup assembly (3) that adopts the resistor disc pressure in the described housing (2), signal processing apparatus (4) and pressure limiting device (5), its side is provided with end of incoming cables (1), be equiped with display device (8) in the described housing (7), be connected by signal connecting line (6) between described housing (2) and the housing (7).
2. split type resistor disc pressure on-Line Monitor Device according to claim 1, it is characterized in that: be equiped with signal pickup assembly (3), signal processing apparatus (4) and pressure limiting device (5) that three covers independently adopt the resistor disc pressure in the described housing (2), its side is provided with three terminals (1), then is equiped with corresponding three in the described housing (7) and overlaps independently display device (8).
3. split type resistor disc pressure on-Line Monitor Device according to claim 1 and 2 is characterized in that: described display device (8) can show the dual display of leakage current of an arrester again for both showing the lightning arrester action frequency.
4. split type resistor disc pressure on-Line Monitor Device according to claim 1 and 2 is characterized in that: the described resistor disc in the signal pickup assembly (3) of described employing resistor disc pressure is the semiconductor ceramics element.
5. split type resistor disc pressure on-Line Monitor Device according to claim 3 is characterized in that: the described resistor disc in the signal pickup assembly (3) of described employing resistor disc pressure is the semiconductor ceramics element.
6. split type resistor disc pressure on-Line Monitor Device according to claim 5, it is characterized in that: described semiconductor ceramics element is the metal oxide non-linear resistor.
7. split type resistor disc pressure on-Line Monitor Device according to claim 2, it is characterized in that: described pressure limiting device (5) is to be made of piezoresister or discharging gap.
8. split type resistor disc pressure on-Line Monitor Device according to claim 3, it is characterized in that: described pressure limiting device (5) is to be made of piezoresister or discharging gap.
9. split type resistor disc pressure on-Line Monitor Device according to claim 6, it is characterized in that: described pressure limiting device (5) is to be made of piezoresister or discharging gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079695 CN200941108Y (en) | 2006-09-01 | 2006-09-01 | Splitting resistance-card voltage on-line detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079695 CN200941108Y (en) | 2006-09-01 | 2006-09-01 | Splitting resistance-card voltage on-line detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200941108Y true CN200941108Y (en) | 2007-08-29 |
Family
ID=38747285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620079695 Expired - Lifetime CN200941108Y (en) | 2006-09-01 | 2006-09-01 | Splitting resistance-card voltage on-line detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200941108Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543334A (en) * | 2011-12-30 | 2012-07-04 | 南阳金牛电气有限公司 | Device for automatically testing voltage-sensitive voltage of resistor disc and resistor disc inkjet printing process |
| CN112202055A (en) * | 2020-10-29 | 2021-01-08 | 广东稳峰电力科技有限公司 | Surge protection switch cabinet |
-
2006
- 2006-09-01 CN CN 200620079695 patent/CN200941108Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543334A (en) * | 2011-12-30 | 2012-07-04 | 南阳金牛电气有限公司 | Device for automatically testing voltage-sensitive voltage of resistor disc and resistor disc inkjet printing process |
| CN112202055A (en) * | 2020-10-29 | 2021-01-08 | 广东稳峰电力科技有限公司 | Surge protection switch cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070829 |
|
| EXPY | Termination of patent right or utility model |