CN86201511U - Signal far-transmission and shock isolating apparatus for coil temp. controller - Google Patents
Signal far-transmission and shock isolating apparatus for coil temp. controller Download PDFInfo
- Publication number
- CN86201511U CN86201511U CN 86201511 CN86201511U CN86201511U CN 86201511 U CN86201511 U CN 86201511U CN 86201511 CN86201511 CN 86201511 CN 86201511 U CN86201511 U CN 86201511U CN 86201511 U CN86201511 U CN 86201511U
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- Prior art keywords
- transformer
- coil
- shock isolating
- transmission
- isolating apparatus
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- Ceased
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Abstract
The utility model discloses a signal far-transmission and shock isolating apparatus for coil temperature controller, which can measure and control the temperature of the hottest component of the winding coil in the process of running the transformer. Because the utility model adopts a pair of shock isolating apparatus with good damping effect, the coil temperature controller arranged on the transformer casing indicates clear, and the operation of the coil temperature controller is reliable. The signal far-transmission and shock isolating apparatus for coil temperature controller also makes the temperature signal of the transformer coil transmit to the control centre machinery room, which is very convenient to know the operational aspect of the transformer.
Description
A kind of instrument that is used to measure and control the power transformer winding temperature.
Transformer coil temperature high or low has closely-related influence to the on-road efficiency and the safety in operation of transformer.At present domestic do not have a this instrument, directly influenced the on-road efficiency of transformer station.
There is a few countries to produce this instrument abroad, as Japan, Sweden and Switzerland.The AKM-35 molded lines circle thermometer released in recent years of Sweden wherein, the measuring transformer coil temperature of hot part indirectly.This thermometer also is furnished with four groups of temperature control switches and a signal far-transmission device, has the control transformer coil temperature and to the function of control center's delivery temperature information.The indicating range of this thermometer is 0～150 ℃, wherein disregards degree of accuracy for 0～30 ℃, and maximum index error is ± 3 ℃ in 30～150 ℃ of scopes, promptly has 2.5 class precisions.AKM-35 molded lines circle thermometer adopts the sensor of WW POT as signal far-transmission device, exists the shortcoming that the dielectric strength grade is low and serviceable life is short.
The utility model is by adopting 1
#(RP-1) 2
#Jet fuel also adopts the sensor of conductive plastic potentiometer as signal far-transmission device as the actuating medium of thermometer, improves the measuring accuracy and the functional reliability of transformer coil thermometer.
The utility model is described below: in the sealing system that thermometer bulb (1), kapillary (2) and corrugated tube (3) are formed, be full of 1 as shown in Figure 1
#(RP-1) 2
#Jet fuel.When thermometer bulb (1) when experiencing temperature, because the thermal expansion of liquid in the sealing system, pointer (4) can produce and move.Scale (5) is gone up the temperature that the value shown in the indication just reflects measurand.Because 1
#(RP-1) 2
#Advantage such as jet fuel has that viscosity is little, specific heat is little, temperature conductivity and coefficient of volumetric expansion are big adopts it can improve accuracy of instrument as the actuating medium of thermometer.
The utility model adopts indirect measurement method, to transformer coil the temperature of hot part measure and control.As shown in Figure 2, imbed a heating (6) in the bellows interior of thermometer, current transformer (7) and power supply adaptation (8) by transformer provide working current to heating.When it can produce certain heat when the proportional electric current of transformer load by one on the heating, therefore instrument also obtains an additional temperature rise.Be inserted in the temperature that the thermometer bulb (1) in the fuel tank of transformer top is experienced,, can reflect the temperature of hot part of transformer coil with this additional temperature rise sum.On this basis, connect a potentiometer on pointer (4) axle, along with moving of pointer, potentiometer is done rotation synchronously.So just can reach the purpose of remote indication and control transformer coil temperature being transported to control center with the corresponding electric signal of transformer coil temperature.
Conductive plastic potentiometer is compared with WW POT, and it is high more than 10 times that mission life is wanted, and it is high 1 times that the dielectric strength grade is also wanted.This to the functional reliability that improves instrument highly significant.In addition, because transformer has bigger vibration when work.AKM-35 molded lines circle thermometer adopts the isolation mounting of laminated spring structure (9) to carry out vibration damping as shown in Figure 3.But the effectiveness in vibration suppression of this laminated spring structure of vibration isolation device has tangible directivity, and directions X can't vibration isolation.This operate as normal to conductive plastic potentiometer constitutes a threat to, and therefore as shown in Figure 4, adopts the isolation mounting of extension spring structure (10) to carry out vibration damping.So the recipient is not to restriction.Embodiment: after tested, the utility model can correctly reflect the transformer coil temperature of hot part.Use through the scene, instrumentation is reliable.Through Zhejiang Province's Testing Technology Study institute and the check of Zhejiang University central laboratory, the every technical indicator of the utility model all reaches AKM-35 molded lines circle thermometer level, and wherein pointing accuracy and damping efficiency binomial leading indicator surpass AKM-35 molded lines circle thermometer.
Claims (2)
1, the thermometer of a kind of measurement and the hottest part temperature of control transformer coil, the sensor that it is characterized in that the temperature signal remote transmission device is to adopt conductive plastic potentiometer.
2, thermometer according to claim 1 is characterized in that being equipped with on the thermometer shell extension spring isolation mounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86201511 CN86201511U (en) | 1986-03-27 | 1986-03-27 | Signal far-transmission and shock isolating apparatus for coil temp. controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86201511 CN86201511U (en) | 1986-03-27 | 1986-03-27 | Signal far-transmission and shock isolating apparatus for coil temp. controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86201511U true CN86201511U (en) | 1986-12-03 |
Family
ID=4805252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86201511 Ceased CN86201511U (en) | 1986-03-27 | 1986-03-27 | Signal far-transmission and shock isolating apparatus for coil temp. controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86201511U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292920A (en) * | 2013-05-14 | 2013-09-11 | 国家电网公司 | Matcher for winding thermometer |
| CN104501980A (en) * | 2015-01-16 | 2015-04-08 | 成都城电电力工程设计有限公司 | Transformer winding temperature measuring device |
| CN110987204A (en) * | 2019-12-04 | 2020-04-10 | 南京韦伯测控技术有限公司 | Intelligent transmitting device for measuring temperature of large oil-immersed power transformer winding |
-
1986
- 1986-03-27 CN CN 86201511 patent/CN86201511U/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292920A (en) * | 2013-05-14 | 2013-09-11 | 国家电网公司 | Matcher for winding thermometer |
| CN103292920B (en) * | 2013-05-14 | 2017-02-08 | 国家电网公司 | Matcher for winding thermometer |
| CN104501980A (en) * | 2015-01-16 | 2015-04-08 | 成都城电电力工程设计有限公司 | Transformer winding temperature measuring device |
| CN110987204A (en) * | 2019-12-04 | 2020-04-10 | 南京韦伯测控技术有限公司 | Intelligent transmitting device for measuring temperature of large oil-immersed power transformer winding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CU03 | Correction of utility model patent gazette |
Correction item: Patent agent Correct: Ou Yangjian False: Ou Fangjian Number: 49 Page: 31 Volume: 2 |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| CE01 | Termination of patent right | ||
| ERR | Gazette correction |
Free format text: CORRECT: PATENT AGENT; FROM: OU FANGJIAN TO: OUYANG JIAN |