CN102706992A - Preparation device and preparation method of blank oil sample of transformer - Google Patents
Preparation device and preparation method of blank oil sample of transformer Download PDFInfo
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- CN102706992A CN102706992A CN2012101359671A CN201210135967A CN102706992A CN 102706992 A CN102706992 A CN 102706992A CN 2012101359671 A CN2012101359671 A CN 2012101359671A CN 201210135967 A CN201210135967 A CN 201210135967A CN 102706992 A CN102706992 A CN 102706992A
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Abstract
The invention discloses a preparation device and a preparation method of a blank oil sample of a transformer. The preparation device comprises an oil tank; an oil inlet pipe, an air exhausting pipe and a nitrogen inlet are arranged at the top of the oil tank; an oil outlet pipe is arranged on the side wall at the lower part of the oil tank; sealing valves are arranged on the oil inlet pipe, the air exhausting pipe, the nitrogen inlet and the oil outlet pipe; the nitrogen inlet is further connected with an air inlet pipe arranged in the oil tank; an agitator is arranged at the top of the oil tank; and the agitator is connected with an agitating blade stretching into the oil tank. The blank oil sample of the transformer is prepared by utilizing a combined manner of injecting high-purity nitrogen bubbles, agitating and vacuumizing, and a large-capacity oil tank is prepared according to the blank oil sample in the actual conditions, so that the preparation work of 15-18 L of the blank oil samples can be finished within 15 minutes; and therefore, the standard oil sample configuration time is saved conveniently and the quality of the configured standard oil sample is improved.
Description
Technical field
The present invention relates to a kind of apparatus and method that prepare blank oil sample, be meant a kind of analyse and compare preparation facilities and preparation method thereof of blank oil sample of test of transformer oil chromatographic that is applied to especially.
Background technology
The transformer oil chromatographic analytical test is one of routine analysis test of transformer; Be used to diagnose transformer inside whether to have overheated, discharge and catabiosis; The transformer chromatograph is as the important instrument of stratographic analysis, in the electric system widespread usage, according to national Specification; Every chromatograph need be internal calibration in 2 years once; And the order of accuarcy of instrument need be demarcated with standard oil sample or standard gas appearance in these 2 years, if the standard of use oil sample is demarcated gas chromatograph, needs the blank oil sample of preparation usually; The transformer oil that does not promptly contain other gas composition; Re-use the standard oil sample that blank oil sample prepares certain component gas content, because the method for " mark is oily " can be checked the accuracy of whole insulating oil gas chromatographic analysis test more, therefore being prepared in transformer chromatography instrument and the test check comparison of blank oil sample played crucial effect.The preparation method of blank oil carried out nitrogen bubble through the insulating oil in separating funnel to accomplish in 2～4 hours in the past; Preparation time is long; Once the blank oil volume of preparation is little, and effect is not very good, therefore; Need a kind of apparatus and method that can prepare a large amount of blank oil samples fast, more help the configuration effort of standard oil sample.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of preparation facilities that can prepare the blank oil sample of a large amount of transformers fast and preparation method thereof.
For achieving the above object, the present invention provides the preparation facilities of the blank oil sample of a kind of transformer, it is characterized in that; It includes fuel tank, and this fuel tank top is provided with oil inlet pipe, gas outlet, nitrogen inlet, and this fuel tank lower sides place is provided with flowline; Be equipped with sealed valve on this oil inlet pipe, gas outlet, nitrogen inlet and the flowline; This nitrogen inlet also is connected with one and is located at the interior draft tube of fuel tank, and this fuel tank top is provided with stirring machine, and this stirring machine is connected with one and stretches into the interior stirring vane of fuel tank.
Bottom and the bottom horizontal expansion of said draft tube that said draft tube reaches said fuel tank have the extension, and this extension is parallel with the bottom of said fuel tank.
The extension outlet of said draft tube is positioned at the below of said stirring vane.
Said flowline is arranged at the side of the bottom 2～3cm of the said fuel tank of distance.
This method step comprises:
(1) be that (the top oil inlet pipe is closed and sealed in injection transformer oil in the steel fuel tank about 30cm * 30cm * 30cm), the oiling back that finishes through sealed valve to 27L through fuel tank top oil inlet pipe to volume;
(2) open the sealed valve that the fuel tank top nitrogen enters the mouth, carry out bubbling at the high pure nitrogen more than 99.99%, start stirring machine simultaneously and transformer oil is stirred through stirring vane through the stainless steel draft tube feeding purity of straight-through bottom;
(3) logical high pure nitrogen and stirring are after 3 minutes; Close the sealed valve of nitrogen inlet earlier; Utilize vacuum pump the fuel tank upper space to be vacuumized then through gas outlet; Treat that vacuum tightness reduces to 133Pa and kept 2 minutes when following, vacuumize and continue to blast nitrogen when finishing, start stirring machine simultaneously transformer oil is stirred;
(4) behind the repeating step (3) three times, blank oil sample is accomplished in preparation, the work of can drawing oil sample of the sealed valve of opening flowline.
In said step (1), stop oiling during transformer oil oil level to 2/3 place bottom fuel tank.
Said transformer oil is fresh oil or operation oil.
In the said step (2), in order to the nitrogen cylinder inner air pressure that holds nitrogen more than 5MPa.
The volume of said fuel tank is 27 liters.
Said method was accomplished the preparation work of 15～18 lift-off white oil appearance at 15 minutes.
Blank oil sample preparation facilities of the present invention can prepare the blank oil sample of transformer fast, in a large number; So that save standard oil sample setup time, improve configuration standard oil sample quality and gas chromatograph is checked comparison time; Can guarantee its homogeneity through the blank oil of the transformer of preparation method's configuration of the present invention, avoid the error that causes by repeatedly disposing blank oil sample.This method mainly is used for electric system and carries out the gas chromatograph accuracy verification comparison that transformer oil is analyzed.
Description of drawings
Fig. 1 is the front view of the blank oil sample preparation facilities of transformer of the present invention;
Fig. 2 is the vertical view of the blank oil sample preparation facilities of transformer of the present invention;
Fig. 3 is the left view of the blank oil sample preparation facilities of transformer of the present invention.
Embodiment
For ease of structure of the present invention, method and the effect that reaches are had further understanding, combine the accompanying drawing preferred embodiment that develops simultaneously to specify as follows at present.
Like Fig. 1, Fig. 2, shown in Figure 3; The preparation facilities of the blank oil sample of transformer of the present invention includes fuel tank 1; This fuel tank 1 top is provided with oil inlet pipe 10, gas outlet 11, nitrogen inlet 12; This fuel tank 1 lower sides place is provided with flowline 13, is equipped with sealed valve 14 on this oil inlet pipe 10, gas outlet 11, nitrogen inlet 12 and the flowline 13, and this nitrogen inlet 12 also is connected with the draft tube 15 be located in the fuel tank 1; This draft tube 15 reaches fuel tank 1 bottom and draft tube 15 bottom horizontal expansions have extension 150, and this extension 150 is parallel with fuel tank 1 bottom.This fuel tank 1 top is provided with stirring machine 16, and this stirring machine 16 is connected with the stirring vane 17 that stretches in the fuel tank 1.
The step that the present invention prepares the blank oil sample of transformer is following:
1, be 27L (injection transformer oil in the steel fuel tank about 30cm * 30cm * 30cm) through fuel tank top oil inlet pipe to volume; Oil level is to stop oiling during about 2/3 place from mailbox bottom; Close and seal the top oil inlet pipe through sealed valve, this transformer oil can be fresh oil or operation oil;
2, open the sealed valve of fuel tank top nitrogen inlet; Stainless steel draft tube through straight-through bottom feeds purity and carries out bubbling at the high pure nitrogen more than 99.99% (nitrogen cylinder pressure should more than 5MPa), starts stirring machine simultaneously and through stirring vane transformer oil is stirred;
3, logical high pure nitrogen and stir 3 minutes after; Close the sealed valve of nitrogen inlet earlier; Utilize vacuum pump the fuel tank upper space to be vacuumized then through gas outlet; Treat that vacuum tightness reduces to 133Pa and kept 2 minutes when following, vacuumize and continue to blast nitrogen when finishing, start stirring machine simultaneously transformer oil is stirred;
4, behind the repeating step 3 three times, i.e. blank oil sample is accomplished in preparation, the work of can drawing oil sample of the sealed valve of opening flowline.
Among the present invention, the position of injection transformer oil is that about 2/3 place of fuel tank is because can either prepare a large amount of blank oil samples, prevents that again transformer oil is splashed into exhaust and vacuum-pumping pipeline in whipping process; In order to guarantee Quality of Transformer Oil in the nitrogen replacement fuel tank, the outlet of high pure nitrogen in fuel tank should be below stirring vane, i.e. the extension of draft tube outlet is positioned at the below of stirring vane, can guarantee that so nitrogen dissolves in the good dispersion of transformer oil; Increase after stirring and nitrogen bubble are accomplished and vacuumize step; Not only can the oil dissolved gas component that bubbling process displace is come out all be discharged; Maintenance that the more important thing is vacuum tightness can let a small amount of residual gas component of dissolving in the transformer oil also can separate out; Thereby effectively guarantee blank oil sample quality, shorten the time of the blank oil sample of preparation greatly; The setting of flowline should can prevent that so fuel tank internal from preparing the impurity such as solid particle that produce in the oil sample process and being taken into syringe in the side apart from the about 2～3cm in fuel tank bottom, guarantees the cleanliness factor of blank oil sample.
The present invention utilizes and injects the high pure nitrogen bubbling, stirs and vacuumize associated form and carry out the blank oil sample preparation of transformer; And prepare fuel tank according to the blank oil sample of actual design high capacity; Can accomplish the preparation work of the blank oil sample of 15～18L at 15 minutes; Be convenient to save standard oil sample setup time and improve configuration standard oil sample quality, can guarantee its homogeneity, avoid the error that causes by repeatedly disposing blank oil sample through the blank oil of the transformer of this method configuration.Method is used for electric system and carries out the gas chromatograph accuracy verification comparison that transformer oil is analyzed.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (10)
1. the preparation facilities of the blank oil sample of transformer is characterized in that it includes fuel tank; This fuel tank top is provided with oil inlet pipe, gas outlet, nitrogen inlet; This fuel tank lower sides place is provided with flowline, is equipped with sealed valve on this oil inlet pipe, gas outlet, nitrogen inlet and the flowline, and this nitrogen inlet also is connected with one and is located at the interior draft tube of fuel tank; This fuel tank top is provided with stirring machine, and this stirring machine is connected with one and stretches into the interior stirring vane of fuel tank.
2. the preparation facilities of the blank oil sample of transformer as claimed in claim 1 is characterized in that bottom and the bottom horizontal expansion of said draft tube that said draft tube reaches said fuel tank have the extension, and this extension is parallel with the bottom of said fuel tank.
3. the preparation facilities of the blank oil sample of transformer as claimed in claim 2 is characterized in that, the extension outlet of said draft tube is positioned at the below of said stirring vane.
4. the preparation facilities of the blank oil sample of transformer as claimed in claim 1 is characterized in that, said flowline is arranged at the side of the bottom 2～3cm of the said fuel tank of distance.
5. method that equipment prepares blank oil sample for preparing of utilizing claim 1 is characterized in that this method step comprises:
(1) be that (the top oil inlet pipe is closed and sealed in injection transformer oil in the steel fuel tank about 30cm * 30cm * 30cm), the oiling back that finishes through sealed valve to 27L through fuel tank top oil inlet pipe to volume;
(2) open the sealed valve that the fuel tank top nitrogen enters the mouth, carry out bubbling at the high pure nitrogen more than 99.99%, start stirring machine simultaneously and transformer oil is stirred through stirring vane through the stainless steel draft tube feeding purity of straight-through bottom;
(3) logical high pure nitrogen and stirring are after 3 minutes; Close the sealed valve of nitrogen inlet earlier; Utilize vacuum pump the fuel tank upper space to be vacuumized then through gas outlet; Treat that vacuum tightness reduces to 133Pa and kept 2 minutes when following, vacuumize and continue to blast nitrogen when finishing, start stirring machine simultaneously transformer oil is stirred;
(4) behind the repeating step (3) three times, blank oil sample is accomplished in preparation, the work of can drawing oil sample of the sealed valve of opening flowline.
6. the method for the blank oil sample of preparation as claimed in claim 5 is characterized in that, in said step (1), stops oiling during transformer oil oil level to 2/3 place bottom fuel tank.
7. the method for the blank oil sample of preparation as claimed in claim 5 is characterized in that, said transformer oil is fresh oil or operation oil.
8. the method for the blank oil sample of preparation as claimed in claim 5 is characterized in that, in the said step (2), in order to the nitrogen cylinder inner air pressure that holds nitrogen more than 5MPa.
9. the method for the blank oil sample of preparation as claimed in claim 5 is characterized in that, the volume of said fuel tank is 27 liters.
10. the method for the blank oil sample of preparation as claimed in claim 5 is characterized in that, said method was accomplished the preparation work of 15～18 lift-off white oil appearance at 15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101359671A CN102706992A (en) | 2012-05-04 | 2012-05-04 | Preparation device and preparation method of blank oil sample of transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101359671A CN102706992A (en) | 2012-05-04 | 2012-05-04 | Preparation device and preparation method of blank oil sample of transformer |
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| CN102706992A true CN102706992A (en) | 2012-10-03 |
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| CN2012101359671A Pending CN102706992A (en) | 2012-05-04 | 2012-05-04 | Preparation device and preparation method of blank oil sample of transformer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424486A (en) * | 2013-07-30 | 2013-12-04 | 中国电力科学研究院 | System and method for detecting performance of transformer oil chromatography online monitoring device |
| CN105223286A (en) * | 2015-09-01 | 2016-01-06 | 重庆大学 | The preparation of characteristic of transformer gas standard oil sample and evaluation method |
| CN106872613A (en) * | 2015-12-14 | 2017-06-20 | 中国电力科学研究院 | A kind of standard transformer oil sample device for formulating and its operating method |
| CN107064375A (en) * | 2017-06-07 | 2017-08-18 | 山东中惠仪器有限公司 | Standard transformer oil sample configures system standard gas fast dissolving device |
| CN112432830A (en) * | 2020-11-09 | 2021-03-02 | 中车株洲电机有限公司 | Device and method for preparing blank oil sample of transformer insulating oil |
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| US4266950A (en) * | 1978-06-30 | 1981-05-12 | Mitsubishi Denki Kabushiki Kaisha | Bubbling type dissolved gas separator |
| JP2002311006A (en) * | 2001-04-17 | 2002-10-23 | Hitachi Sci Syst Ltd | Standard oil producing device for gas-in-oil analyzing device |
| JP2003098165A (en) * | 2001-09-27 | 2003-04-03 | Hitachi Ltd | Apparatus for producing standard oil for gas analyzing apparatus in transformer oil |
| CN2661210Y (en) * | 2003-09-09 | 2004-12-08 | 袁登玉 | Injectio mixing and adjusting device |
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2012
- 2012-05-04 CN CN2012101359671A patent/CN102706992A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4266950A (en) * | 1978-06-30 | 1981-05-12 | Mitsubishi Denki Kabushiki Kaisha | Bubbling type dissolved gas separator |
| JP2002311006A (en) * | 2001-04-17 | 2002-10-23 | Hitachi Sci Syst Ltd | Standard oil producing device for gas-in-oil analyzing device |
| JP2003098165A (en) * | 2001-09-27 | 2003-04-03 | Hitachi Ltd | Apparatus for producing standard oil for gas analyzing apparatus in transformer oil |
| CN2661210Y (en) * | 2003-09-09 | 2004-12-08 | 袁登玉 | Injectio mixing and adjusting device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424486A (en) * | 2013-07-30 | 2013-12-04 | 中国电力科学研究院 | System and method for detecting performance of transformer oil chromatography online monitoring device |
| CN105223286A (en) * | 2015-09-01 | 2016-01-06 | 重庆大学 | The preparation of characteristic of transformer gas standard oil sample and evaluation method |
| CN106872613A (en) * | 2015-12-14 | 2017-06-20 | 中国电力科学研究院 | A kind of standard transformer oil sample device for formulating and its operating method |
| CN106872613B (en) * | 2015-12-14 | 2020-03-13 | 中国电力科学研究院 | Transformer standard oil sample preparation device and operation method thereof |
| CN107064375A (en) * | 2017-06-07 | 2017-08-18 | 山东中惠仪器有限公司 | Standard transformer oil sample configures system standard gas fast dissolving device |
| CN107064375B (en) * | 2017-06-07 | 2023-06-16 | 山东中惠仪器有限公司 | Standard gas quick dissolving device of transformer standard oil sample configuration system |
| CN112432830A (en) * | 2020-11-09 | 2021-03-02 | 中车株洲电机有限公司 | Device and method for preparing blank oil sample of transformer insulating oil |
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Owner name: HEBEI ELECTRIC POWER CORPORATION ELECTRIC POWER RE Free format text: FORMER OWNER: HEBEI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20130122 Owner name: HEBEI ELECTRIC POWER CONSTRUCTION + ADJUSTMENT RES Free format text: FORMER OWNER: HEBEI ELECTRIC POWER CONSTRUCTION + ADJUSTMENT RESEARCH INSTITUTE Effective date: 20130122 |
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Effective date of registration: 20130122 Address after: 050021 No. 238 South Sports street, Hebei, Shijiazhuang Applicant after: Electric Power Research Institute of Hebei Electric Power Corporation Applicant after: Hebei Electric Power Construction & Adjustment Research Institute Applicant after: State Grid Corporation of China Address before: 050021 No. 238 South Sports street, Hebei, Shijiazhuang Applicant before: Hebei Electric Power Research Institute Applicant before: Hebei Electric Power Construction & Adjustment Research Institute |
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Application publication date: 20121003 |