CN2558055Y - Capacitance type voltage inductor - Google Patents
Capacitance type voltage inductor Download PDFInfo
- Publication number
- CN2558055Y CN2558055Y CN 02275829 CN02275829U CN2558055Y CN 2558055 Y CN2558055 Y CN 2558055Y CN 02275829 CN02275829 CN 02275829 CN 02275829 U CN02275829 U CN 02275829U CN 2558055 Y CN2558055 Y CN 2558055Y
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- gas
- sulfur hexafluoride
- hexafluoride gas
- nitrogen
- insulation
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Abstract
Disclosed is a capacitive voltage divider of a capacitor voltage transformer, adopting the oil-immersion insulation and the sealed shell of an electromagnetic device is filled with gas to realize gas insulation. The potential hazard of oil leakage is reduced by the structure; meanwhile, the electromagnetic part which has small consumption and low temperature rise adopts the gas insulation to ensure the insulated because the gas pressure inside the sealed shell cannot change greatly according to the change of the environmental temperature; compared with the product which adopts the gas insulation, the product whose electromagnetic part adopts the gas insulation has low cost; a gas protective measurer in which a signal transmitter is arranged is arranged outside the shell of the electromagnetic device to ensure the safe working of the device through transmitting warning signals when the change of the gas pressure exceeds a certain value. Compared with the product which adopts the oil-immersion insulation, the weight of the utility model is reduced. The installation and maintenance become convenient and the service life is prolonged. The insulated gas is the sulfur hexafluoride gas or the mixture of the sulfur hexafluoride gas and nitrogen or; or the mixture gas of the sulfur hexafluoride gas and the air; or the mixture gas of the sulfur hexafluoride gas, the nitrogen and the air.
Description
(1) technical field
The utility model relates to the capacitance type potential transformer that uses in a kind of high pressure or the ultrahigh voltage power power transmission and transformation system, particularly a kind of novel capacitance-type voltage transformer.
(2) technical background
What generally use at present is the oil immersed type capacitance type potential transformer.Be full of insulating oil in the seal casinghousing of this kind capacitance type potential transformer, calutron and capacitor voltage divider all are immersed in the insulating oil.Expander is housed in the housing, is used to compensate insulating oil and varies with temperature the change in volume that causes, make the limited pressure that keeps regulation in the housing.Its weak point one is the hidden danger that has insulating oil leakage, if seepage takes place, not only influences its built-in electrical insulation, also can cause environmental pollution; The 2nd, in case the inner electrical breakdown fault that takes place, insulating oil will decompose, its volume will expand rapidly above the limit of compensation of expander, powerful pressure can make case fragmentation, jeopardize personnel's and equipment safety on every side, and flammable insulating oil overflows the high temperature of back during electrical breakdown and makes it burning, very easily causes fire.
Chinese patent CN2472323 " gas-insulated capacitance type potential transformer " is at solving the problem that the oil immersed type capacitance type potential transformer exists.But because insulating gas compares with insulating oil, its dielectric coefficient is much smaller, and its saturating machine and electric strength are also relatively poor.Therefore adopt the capacitor voltage divider of gas-insulated structure to compare with general oil immersed type capacitor voltage divider, volume is bigger, and cost improves, the product costliness.The capacitor voltage divider technology of gas-insulated structure is very unripe as yet in addition, and its performance is stable inadequately.This all is the reason that the gas-insulated capacitance type potential transformer is difficult to extensively promote the use of.
(3) utility model content
The purpose of this utility model is a kind of novel capacitance-type voltage transformer of design, and its capacitor voltage divider part still adopts the oil immersion insulation, and electromagnet portion adopts gas-insulated, has significantly reduced the hidden danger of oil seepage or leakage.Simplified manufacturing process, cost reduces.
The novel capacitance-type voltage transformer of the utility model design comprises hermetic capacitor voltage divider part and the hermetic calutron part that is full of insulating oil.Capacitor voltage divider is that common oil immersion insulated electro is held voltage divider, is full of insulating gas in the closure casing of calutron.
The utility model has the advantages that: 1, capacitor voltage divider and calutron part adopts oil immersion insulation and gas-insulated respectively, has reduced the hidden danger of oil seepage or leakage, and insulation is reliable; 2, the less electromagnet portion of volume adopts gas-insulated to compare the cost reduction with all gas insulation; 3, the electromagnet portion that loss is little, temperature rise is low adopts gas-insulated, and its air pressure can not guarantee insulation effect because of variation of ambient temperature has bigger change; 4, the gas isolated calutron of dry type partly is fitted with the gas pressure measurement protector, guarantees that fault is in time handled, and protects the person and device security effectively; 5, compare with whole oil immersion insulation, product weight reduces, and is easy for installation and maintenance, and has prolonged service life of equipment.
(4) description of drawings
The general structure schematic diagram of the novel capacitance-type voltage transformer that Fig. 1 designs for the utility model.
(5) embodiment
As shown in Figure 1, the novel capacitance-type voltage transformer of the utility model design comprises hermetic capacitor voltage divider part 1 and the hermetic calutron part 2 that is full of insulating oil.Capacitor voltage divider 1 is that common oil immersion insulated electro is held voltage divider, is full of insulating gas in the closure casing 5 of calutron 2.Outlet box 3 is equipped with in the outside of closure casing 5, carries out insulation processing earlier before electromagnetic unit 4 assemblings, refills in housing 5, and its wiring is drawn through encapsulation process, in order to being connected with top capacitor voltage divider 1 element.Be full of insulating gas in the housing 5 by 7 sealings of PROCESS FOR TREATMENT mouth.After this, with the capacitor voltage divider 1 on top and the calutron 2 affixed product novel capacitance-type voltage transformers that become of bottom.
The housing 5 outer Buchholz protection measuring appliances 6 that are equipped with detect the demonstration gas pressure.Buchholz protection measuring appliance 6 is equipped with sender unit.When gas pressure change exceeds certain value, as reducing when the gas leakage gas pressure or when because of puncture gas pressure significantly being raise suddenly, sender unit sends alarm signal to the operator on duty, with timely processing, guarantees equipment safety operation.
Above-mentioned insulating gas is mist or sulfur hexafluoride gas and Air mixing gas or sulfur hexafluoride gas, nitrogen and the Air mixing gas of sulfur hexafluoride gas or sulfur hexafluoride gas and nitrogen.
Claims (7)
1 one kinds of novel capacitance-type voltage transformers comprise hermetic capacitor voltage divider part (1) and the hermetic calutron part (2) that is full of insulating oil; Capacitor voltage divider (1) is that common oil immersion insulated electro is held voltage divider, it is characterized by:
Be full of insulating gas in the closure casing (5) of calutron (2).
2 novel capacitance-type voltage transformers according to claim 1 is characterized by:
Outlet box (3) is equipped with in the outside of closure casing (5), carries out insulation processing earlier before electromagnetic unit (4) assembling, refills in housing (5), and its wiring is drawn through encapsulation process, is connected with top capacitor voltage divider (1) element.
3 novel capacitance-type voltage transformers according to claim 1 and 2 is characterized by:
The housing 5 outer Buchholz protection measuring appliances 6 that are equipped with.
4 novel capacitance-type voltage transformers according to claim 3 is characterized by:
Buchholz protection measuring appliance 6 is equipped with sender unit.
5 novel capacitance-type voltage transformers according to claim 1 and 2 is characterized by:
Above-mentioned insulating gas is mist or sulfur hexafluoride gas and Air mixing gas or sulfur hexafluoride gas, nitrogen and the Air mixing gas of sulfur hexafluoride gas or sulfur hexafluoride gas and nitrogen.
6 novel capacitance-type voltage transformers according to claim 3 is characterized by:
Above-mentioned insulating gas is mist or sulfur hexafluoride gas and Air mixing gas or sulfur hexafluoride gas, nitrogen and the Air mixing gas of sulfur hexafluoride gas or sulfur hexafluoride gas and nitrogen.
7 novel capacitance-type voltage transformers according to claim 4 is characterized by:
Above-mentioned insulating gas is the mist of sulfur hexafluoride gas or sulfur hexafluoride gas and nitrogen.Or sulfur hexafluoride gas and Air mixing gas or sulfur hexafluoride gas, nitrogen and Air mixing gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275829 CN2558055Y (en) | 2002-07-19 | 2002-07-19 | Capacitance type voltage inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275829 CN2558055Y (en) | 2002-07-19 | 2002-07-19 | Capacitance type voltage inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2558055Y true CN2558055Y (en) | 2003-06-25 |
Family
ID=33739792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02275829 Expired - Lifetime CN2558055Y (en) | 2002-07-19 | 2002-07-19 | Capacitance type voltage inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2558055Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846720A (en) * | 2010-04-23 | 2010-09-29 | 厦门大一互科技有限公司 | Test method for a cast-type mutual inductor for SF6 gas cabinet |
| CN102033175A (en) * | 2010-10-22 | 2011-04-27 | 河南省电力公司平顶山供电公司 | Insulated obturator for measuring electromagnetic potential transformer |
| CN102082024A (en) * | 2010-11-09 | 2011-06-01 | 中国西电电气股份有限公司 | External-expander capacitive voltage transformer and vacuum treatment method thereof |
| CN103344936A (en) * | 2013-07-08 | 2013-10-09 | 广东电网公司佛山供电局 | Method for fault simulation test of capacitor voltage transformer |
| CN105304295A (en) * | 2015-11-16 | 2016-02-03 | 张磊 | Intelligent inflatable voltage transformer |
| CN105517260A (en) * | 2016-02-03 | 2016-04-20 | 泰州优宾晶圆科技有限公司 | Bulb and power source integration system |
| CN107680790A (en) * | 2017-11-06 | 2018-02-09 | 江苏科兴电器有限公司 | A kind of electronic mutual inductor of anti-breakdown charged output |
-
2002
- 2002-07-19 CN CN 02275829 patent/CN2558055Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846720A (en) * | 2010-04-23 | 2010-09-29 | 厦门大一互科技有限公司 | Test method for a cast-type mutual inductor for SF6 gas cabinet |
| CN102033175A (en) * | 2010-10-22 | 2011-04-27 | 河南省电力公司平顶山供电公司 | Insulated obturator for measuring electromagnetic potential transformer |
| CN102033175B (en) * | 2010-10-22 | 2014-03-19 | 国家电网公司 | Insulated obturator for measuring electromagnetic potential transformer |
| CN102082024A (en) * | 2010-11-09 | 2011-06-01 | 中国西电电气股份有限公司 | External-expander capacitive voltage transformer and vacuum treatment method thereof |
| CN103344936A (en) * | 2013-07-08 | 2013-10-09 | 广东电网公司佛山供电局 | Method for fault simulation test of capacitor voltage transformer |
| CN103344936B (en) * | 2013-07-08 | 2015-11-18 | 广东电网公司佛山供电局 | Method for fault simulation test of capacitor voltage transformer |
| CN105304295A (en) * | 2015-11-16 | 2016-02-03 | 张磊 | Intelligent inflatable voltage transformer |
| CN105517260A (en) * | 2016-02-03 | 2016-04-20 | 泰州优宾晶圆科技有限公司 | Bulb and power source integration system |
| CN107680790A (en) * | 2017-11-06 | 2018-02-09 | 江苏科兴电器有限公司 | A kind of electronic mutual inductor of anti-breakdown charged output |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120719 Granted publication date: 20030625 |