CN87201133U - Air-containing capacity in electric insulating oil measuring device - Google Patents
Air-containing capacity in electric insulating oil measuring device Download PDFInfo
- Publication number
- CN87201133U CN87201133U CN 87201133 CN87201133U CN87201133U CN 87201133 U CN87201133 U CN 87201133U CN 87201133 CN87201133 CN 87201133 CN 87201133 U CN87201133 U CN 87201133U CN 87201133 U CN87201133 U CN 87201133U
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- piston
- pipeline
- communicated
- vacuum pump
- oil
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- Expired - Lifetime
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Abstract
The utility model relates to an air-containing capacity in electric insulating oil measuring device, which aims at making further improvement to the air-containing capacity in electric insulating oil measuring device having middle and low viscosity; the utility model comprises four parts of a sampling device, a degassing device, a measuring device and a vacuum pump; the vacuum pump can be used for vacuum pumping of the degassing device as well as taking sample; the gas pressure of the measuring sample oil is measured by adopting a U-shaped oil column pressure gage. The utility model has the advantages of simple device, high precision, conveniently taking sample and no mercury vapor pollution.
Description
The utility model belongs to the air content measurement mechanism.Specifically, be in having, a kind of improvement of low isoviscous electric insulating oil air content measurement mechanism.
Electric insulating oil contains gas, surpass regulation content after, to all having harmful effect in performance, serviceable life of electric equipment.On the other hand, according to the gas content and the composition of used electric insulating oil, can judge the reason that causes the electric equipment fault.As measure electric insulating oil air content, Unite States Standard (USS) (ASTMD2945-71; ASTMD831-63) relative assembly and method have all been proposed.
In Unite States Standard (USS) (ASTMD2945-71), its device has the analyzer of gas content, rubber vacuum pipe, sampling syringe.It is to utilize the lifting of mercury face in the buret to form vacuum in analyzer.Sample oil flows to and forms film in the analyzer, and makes it to expose in a vacuum, thereby its contained gas is deviate from, and after this device is returned to atmospheric pressure.Calculate air content according to the volume of the oil that has outgased in the degas chamber and the gas volume of deviating from.This device uses mercury, thereby produces the mercury vapour public hazards, and must use the sampling syringe.
In Unite States Standard (USS) (ASTMD831-63), its device has aspirating chamber, sprayer, compression mercury piezometer (Mcleod gage), oil storage bottle, thermostat, thermo detector, cold-trap, piston etc.It with vacuum pump to the degas chamber exhaust.Sample in the special-purpose sampler enters degas chamber by sprayer, and gas is deviate from, from volume, the temperature of the volume of device, laboratory sample, deviate from the pressure of gas, but the air content of calculation sample.This device is measured pressure with compression mercury piezometer, and the mercury vapour public hazards are arranged, and the necessary special sampler of adapted, and special-purpose sampler is convenient inadequately when practicality.
The utility model purpose is in order to provide a kind of both easy to operate, and it is accurate and simple in structure to measure, and no mercury steam public hazards are applicable in the having of various sampler, low isoviscous electric insulating oil air content proving installation.
Concrete device of the present utility model is provided by accompanying drawing.
This installs by sampling device, degasser, and four parts of pressure measurer and vacuum pump are formed.Sampling device is made up of sampling container A, piston 3 and piston 4, pipeline F; Degasser is made up of aperture sprayer B, the degas chamber C that has the volume scale, oil storage bottle D, thermo detector T, constant temperature oven E; Pressure measurer is made up of piston 5 and piston 6, U-shaped oil column piezometer H.U-shaped oil column piezometer H passes through piston 5 and piston 6 and corresponding pipeline and is communicated with the top of degas chamber C; Degas chamber C is communicated with vacuum pump P by aperture sprayer B, piston 2, piston 3, piston 4 and pipeline G; The pipeline F upper end of feeding sampler A is communicated with the pipeline between piston 2 and the piston 3, thereby sampler A is communicated with degas chamber C and vacuum pump P respectively; Oil storage bottle D is communicated with the lower end of degas chamber C by piston 1, is communicated with pipeline G by pipeline M, thereby is communicated with vacuum pump P.
Said structure of the present utility model can make vacuum pump P can be used for vacuumizing of degasser and pressure measurer, can be used to extract the sample in the sampling container A again.Like this, the sampling container A in this device not necessarily will use special-purpose sampling syringe, also can use common overflow bottle.When sampling container A was overflow bottle, pipeline F one end J can extend into its bottom, and when sampling container A was syringe, pipeline F one end J linked with it.
The utility model principle of work and running program are as follows: closure piston 2 and piston 4, other piston is opened, and starts vacuum pump, and degasser, pressure measurer partly are evacuated.Closure piston 1 and piston 5, open piston 3 and piston 4, owing to making the interior fluid of sampling container A, the vacuum in pipeline G and the pipeline I slowly rises to the top of piston 3, closure piston 3 immediately, open piston 2, make fluid spray about tens milliliters (can read from the degas chamber C that has the volume scale) from aperture B, gas is just deviate from a vacuum in the oil.Therefore make pressure increase in the degas chamber, its value is read by the oil column difference of U-shaped oil column piezometer H.According to formula:
GG＝ 35.9/(V
o) [ (V-V
dP
o)/(273+t
a) + ((V
d-V
o)P
o)/(273+t
d) ]
Here GG: gas content is to the percentage (760mmHg, 0 ℃) of oil sample volume
V: the cumulative volume of device (ml)
V
0: the volume (ml) of oil in the degas chamber C
V
d: degasser volume (ml) in the thermostat E
P
0: the pressure (mmHg) of deviating from gas in the device
t
a: room temperature (℃)
t
d: the temperature in the thermostat E (℃)
Calculate the air content of electric insulation oil samples, it is represented by percent by volume.
After test finishes, open piston 1, make the indoor fluid of C flow into oil storage bottle D.After this, rotating piston 4 allows air enter pipeline I by piston 4, opens piston 3, allows the interior sample oil of pipeline F return in the sampling container A.
The utility model is owing to adopted U-shaped oil column pressure gage, use the vavuum pump exhaust, so do not have mercury in the device, thereby there are not mercury vapour public hazards, U-shaped oil column pressure gage cost is lower, it is more more accurate than compression mercury pressure gage to the measurement of condensable gas, and can measure the air content that air content is about 0.1% insulating oil. Because adopted sampling device, thereby be applicable to open-topped, present the most frequently used overflow bottle or sampling injector, usage comparison is convenient.
Claims (1)
- A kind of electric insulating oil air content measurement mechanism comprises following four parts:(1) contain the sampling device of sampler A,(2) degasser of forming by aperture sprayer B, the degas chamber C that has molten long-pending scale, oil storage bottle D, thermo detector T, constant temperature oven E,(3) contain the pressure measurer of U-shaped oil column piezometer H,(4) vacuum pump,It is characterized in that:(5) U-shaped oil column piezometer H is communicated with the top of degas chamber C by piston 5 and piston 6 and corresponding pipeline,(6) degas chamber C is communicated with vacuum pump P by aperture sprayer B, piston 2, piston 3, piston 4 and pipeline G,(7) feed the pipeline F upper end of sampler A and be communicated with, thereby sampler A is communicated with degas chamber C and vacuum pump P respectively with pipeline between piston 2 and the piston 3,(8) oil storage bottle D is communicated with the bottom of degas chamber C by piston 1, is communicated with pipeline G by pipeline M, thereby is communicated with vacuum pump P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87201133 CN87201133U (en) | 1987-03-25 | 1987-03-25 | Air-containing capacity in electric insulating oil measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87201133 CN87201133U (en) | 1987-03-25 | 1987-03-25 | Air-containing capacity in electric insulating oil measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87201133U true CN87201133U (en) | 1988-01-06 |
Family
ID=4817470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87201133 Expired - Lifetime CN87201133U (en) | 1987-03-25 | 1987-03-25 | Air-containing capacity in electric insulating oil measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87201133U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323182A (en) * | 2011-05-30 | 2012-01-18 | 山东电力研究院 | Method for measuring gas content in insulating oil |
| CN102621032A (en) * | 2012-03-19 | 2012-08-01 | 扬州大学 | Automatic tester for gas content in coal gas |
| CN103048216A (en) * | 2011-11-14 | 2013-04-17 | 宁波圣龙汽车动力系统股份有限公司 | Measurement device and method of gas content in oil product |
| CN103994945A (en) * | 2014-06-09 | 2014-08-20 | 广西玉柴机器股份有限公司 | Device and method for measuring content of gas in engine cooling liquid |
| CN104792972A (en) * | 2015-04-26 | 2015-07-22 | 浙江大学 | Portable device for testing air content of hydraulic system |
| CN107063920A (en) * | 2017-03-20 | 2017-08-18 | 国网江苏省电力公司电力科学研究院 | The measurement apparatus and method of a kind of gas content in insulating oil |
-
1987
- 1987-03-25 CN CN 87201133 patent/CN87201133U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323182A (en) * | 2011-05-30 | 2012-01-18 | 山东电力研究院 | Method for measuring gas content in insulating oil |
| CN103048216A (en) * | 2011-11-14 | 2013-04-17 | 宁波圣龙汽车动力系统股份有限公司 | Measurement device and method of gas content in oil product |
| CN103048216B (en) * | 2011-11-14 | 2015-03-04 | 宁波圣龙汽车动力系统股份有限公司 | Measurement device and method of gas content in oil product |
| CN102621032A (en) * | 2012-03-19 | 2012-08-01 | 扬州大学 | Automatic tester for gas content in coal gas |
| CN103994945A (en) * | 2014-06-09 | 2014-08-20 | 广西玉柴机器股份有限公司 | Device and method for measuring content of gas in engine cooling liquid |
| CN103994945B (en) * | 2014-06-09 | 2016-08-24 | 广西玉柴机器股份有限公司 | The measurement apparatus of the gas content in a kind of engine coolant and method |
| CN104792972A (en) * | 2015-04-26 | 2015-07-22 | 浙江大学 | Portable device for testing air content of hydraulic system |
| CN107063920A (en) * | 2017-03-20 | 2017-08-18 | 国网江苏省电力公司电力科学研究院 | The measurement apparatus and method of a kind of gas content in insulating oil |
| CN107063920B (en) * | 2017-03-20 | 2019-11-29 | 国网江苏省电力公司电力科学研究院 | A kind of measuring device and method of gas content in insulating oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |