CN102360756A - Vacuum drying oiling method for main transformer of electric locomotive - Google Patents
Vacuum drying oiling method for main transformer of electric locomotive Download PDFInfo
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- CN102360756A CN102360756A CN2011102776653A CN201110277665A CN102360756A CN 102360756 A CN102360756 A CN 102360756A CN 2011102776653 A CN2011102776653 A CN 2011102776653A CN 201110277665 A CN201110277665 A CN 201110277665A CN 102360756 A CN102360756 A CN 102360756A
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Abstract
The invention relates to the technical field of oiling technique for main transformers of electric locomotives, and in particular relates to a vacuum drying oiling method for a main transformer of an electric locomotive. The method comprises the following steps of: I, oiling preparation; II, vacuumizing an oil storage tank above an oven; III, oiling the oil storage tank above the oven; IV, heating oil in the oil storage tank; V, vacuumizing the drying oven; VI, oiling the main transformer; and VII, finishing the oiling. In the invention, a new oiling method and a new oiling technique are adopted, the overhauling of the main transformer of the electric locomotive is facilitated, and the oiling quality and the overall operation quality of the main transformer are improved.
Description
Technical field
The present invention relates to electric locomotive main transformer oilman technology field, relate in particular to a kind of electric locomotive main transformer vacuumize correction oil injection method.
Background technology
At present, electric locomotive main transformer overhauls first, has only improved oiling frock to be fit to oiling, and the correction oil injection method of main transformer and technological requirement are also insufficient.
Summary of the invention
In order to overcome the deficiency of existing weaponry and equipment, the invention provides a kind of electric locomotive main transformer vacuumize correction oil injection method, easy to operate, simple and practical.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electric locomotive main transformer vacuumize correction oil injection method may further comprise the steps:
One, oiling is prepared: elder generation connects the valve position of the main transformer of electric locomotive the oiling connector and opens valve; Settle the liquid level appearance of baking oven inner again to the top tank of electric locomotive main transformer; Make pairing scale position level under induction installation position, liquid level appearance bottom and this ambient temperature of main transformer, close oven door;
Two, the oil storage tank of baking oven top vacuumizes: with vacuum pump oil storage tank is vacuumized and make its internal vacuum reach 200Pa, the used time is 25-35min; Preferred 28min, 29min, 30min, 31min, 32min.
Three, to the oil storage tank oiling above the baking oven: connect the casing oil-out of outside dress transformer oil and the oiler of top oil storage tank; Close vacuum pump, open the oiler valve, under the effect of air pressure; The transformer oil of external box of microvave is to top oil storage tank oiling 1h; Observe liquid level, can stop oiling at 75-85cm
Four, oil storage tank oil heating: the fuel tap of going into of closing vacuum drying oven top oil storage tank; Open vent valve, abolish its vacuum degree, its air pressure inside is depressed at a standard atmosphere; Be convenient to the heating and the heat conduction of heater; It is 60 ℃ that the temperature control equipment of regulating oil storage tank is simultaneously regulated its temperature, opens the heater of oil storage tank, and the transformer oil in the oil storage tank is depressed heating 1h to 60 ± 5 ℃ at a standard atmosphere;
Five, drying oven vacuumizes: the temperature regulating device of at first regulating the drying oven heater preheats oven interior, and making the temperature that " coil " temperature sensor demonstrates on the control desk display screen is 80 ℃, and vacuumizes 10min, keeps vacuum state 1h simultaneously; Repeat twice of aforesaid operations;
Regulate heater temperature regulating device to 85 ℃ then, making on the control desk display screen " coil " TEMP actuator temperature to 85 ℃ is the temperature of oven interior, and the open vacuum pump vacuumizes 1h to 200Pa to drying oven, and above-mentioned state is kept 2h;
Six, main transformer oiling: the fuel-displaced valve of opening oil storage tank is to the main transformer oiling in the drying oven; Behind the oiling 0.8-1.2h, oiling reaches the transducer place of baking oven liquid level appearance, and oiling stops automatically; Temperature is 85 ℃ in the oiling process; Vacuum degree is reduced to 900Pa from 200Pa, after oiling finishes, keeps 30min;
Seven, oiling finishes: close the fuel-displaced valve of oil storage tank, open the vent valve of drying oven, when the Pressure gauge index of treating baking oven reduces to zero; Can open oven door, close 50 valve of main transformer earlier, dismantle oiling frock and liquid level appearance again; The top tank top cover is tightened, and oiling this moment finishes.
The invention has the beneficial effects as follows that the present invention adopts new correction oil injection method and new oiling technology, has made things convenient for the electric locomotive main transformer maintenance, has improved the overall operation quality of oiling quality and main transformer.
Embodiment
A kind of electric locomotive main transformer vacuumize correction oil injection method may further comprise the steps:
One, oiling is prepared: for fear of in the oiling process, opening baking oven and observing labour and the waste of time that liquid level causes; Main transformer 50mm valve position with electric locomotive connects the oiling connector and opens the 50mm valve earlier; The generation of the aeration product quality problem that oiling produces from top is avoided in the satisfied oiling that makes progress from the bottom.Settle the liquid level appearance of baking oven inner again to the top tank of main transformer; Make pairing scale position level under induction installation position, liquid level appearance bottom and this ambient temperature of main transformer; After reaching liquid level appearance induction installation to oil level like this; The oiling control system stops oiling automatically, makes oiling automation and injection flow effect accurately; Close oven door.
Two, the oil storage tank of baking oven top vacuumizes: in order to make oil storage tank inside, baking oven top vacuum degree is arranged; The oil that stores in the following fuel tank can be pushed down into the oil storage tank of top through atmospheric effect; The speed of oiling is increased; With vacuum pump oil storage tank is vacuumized and to make its internal vacuum reach 200Pa, the used time is 25-35min, preferred 30min;
Three, to the oil storage tank oiling above the baking oven: the oil-out of fuel tank and the oiler of top oil storage tank below connecting, close vacuum pump, open the oiler valve; Under the effect of air pressure; Following fuel tank is observed liquid level to top oil storage tank oiling 1h, should be at 75-85cm; Preferred 80cm can stop oiling, and this step is to utilize the principle of pressure reduction that the oil pressure of bottom is gone in the oil storage tank;
Four, oil storage tank oil heating: close the fuel tap of going into of vacuum drying oven top oil storage tank, open vent valve, abolish its vacuum degree; Its air pressure inside is depressed at a standard atmosphere; Be convenient to the heating and the heat conduction of heater, its temperature of temperature control equipment adjusting of regulating oil storage tank simultaneously is 60 ℃, opens the heater of oil storage tank; Transformer oil in the oil storage tank is depressed heating 1h to 60 ± 5 ℃ at a standard atmosphere, satisfies the oiling temperature requirement of main transformer;
Five, drying oven vacuumizes: for the influence to main transformer oiling quality of the moisture of removing main transformer and drying oven; The temperature regulating device of at first regulating the drying oven heater preheats oven interior; Making the temperature that " coil " temperature sensor demonstrates on the control desk display screen is 80 ℃; And vacuumize 10min, keep vacuum state 1h simultaneously; Repeat twice of aforesaid operations; This method that vacuumizes one by one can be volatilized the remaining micro-moisture in the drying oven step by step, and is accompanied by vacuum pump and takes out and anhydrate steam and flow in the water receiver.
Regulate heater temperature regulating device to 85 ℃ at last; This temperature is the optimum temperature of main transformer oiling; Promptly do not influence the component quality on the main transformer, make hot down oiling reach better effect again, making on the control desk display screen " coil " TEMP actuator temperature to 85 ℃ is the temperature of oven interior; The open vacuum pump vacuumizes 1h to 200Pa to drying oven, and above-mentioned state is kept 2h; This vacuumizing with the empty method of fidelity makes oven interior have negative pressure, and guarantees the vacuum degree that main transformer is inner, make oiling can be smooth with evenly.
Six, main transformer oiling: the fuel-displaced valve of opening oil storage tank is to the main transformer oiling in the drying oven.At this moment, oil storage tank inside is a standard atmospheric pressure, and main transformer is to have vacuum degree in the baking oven; Under pressure, the oil in the oil storage tank flows into the 50mm valve of main transformer, and from the bottom to top to the main transformer oiling; This method satisfies from the bottom the main transformer oiling; Avoid making the oiling process from the top oiling producing the influence of bubble to the oiling quality, vacuum pressure oiling simultaneously makes oiling all even rapidly, and the scale that the liquid level appearance is reflected is correct.Behind the about 1h of oiling, oiling reaches the transducer place of baking oven liquid level appearance, and oiling stops automatically, and temperature is 85 ℃ in the oiling process, and vacuum degree is reduced to 900Pa from 200Pa.After oiling finishes, keep 30min, make main transformer oil fill the short space of main transformer, can start automatically, reach the effect of real-time monitoring and oiling control if lack fluid position appearance;
Seven, oiling finishes: close the fuel-displaced valve of oil storage tank, prevent to have in the unloading process error of leakage of oil, open the vent valve of drying oven; When the Pressure gauge index of treating baking oven reduces to zero, can open oven door, otherwise can damage the oven door hydraulic system; Close 50 valve of main transformer earlier, dismantle oiling frock and liquid level appearance again, prevent the oil leakage phenomenon that misoperation causes; The top tank top cover is tightened, prevented to get into the quality of impurity effect oil, oiling this moment finishes.
Claims (1)
1. electric locomotive main transformer vacuumize correction oil injection method is characterized in that it may further comprise the steps:
One, oiling is prepared: elder generation connects the valve position of the main transformer of electric locomotive the oiling connector and opens valve; Settle the liquid level appearance of baking oven inner again to the top tank of electric locomotive main transformer; Make pairing scale position level under induction installation position, liquid level appearance bottom and this ambient temperature of main transformer, close oven door;
Two, the oil storage tank of baking oven top vacuumizes: with vacuum pump oil storage tank is vacuumized and make its internal vacuum reach 200Pa, the used time is 25-35min;
Three, to the oil storage tank oiling above the baking oven: connect the casing oil-out of outside dress transformer oil and the oiler of top oil storage tank; Close vacuum pump, open the oiler valve, under the effect of air pressure; The transformer oil of external box of microvave is to top oil storage tank oiling 1h; Observe liquid level, can stop oiling at 75-85cm
Four, oil storage tank oil heating: the fuel tap of going into of closing vacuum drying oven top oil storage tank; Open vent valve, abolish its vacuum degree, its air pressure inside is depressed at a standard atmosphere; Be convenient to the heating and the heat conduction of heater; It is 60 ℃ that the temperature control equipment of regulating oil storage tank is simultaneously regulated its temperature, opens the heater of oil storage tank, and the transformer oil in the oil storage tank is depressed heating 1h to 60 ± 5 ℃ at a standard atmosphere;
Five, drying oven vacuumizes: the temperature regulating device of at first regulating the drying oven heater preheats oven interior, and making the temperature that " coil " temperature sensor demonstrates on the control desk display screen is 80 ℃, and vacuumizes 10min, keeps vacuum state 1h simultaneously; Repeat twice of aforesaid operations;
Regulate heater temperature regulating device to 85 ℃ then, making on the control desk display screen " coil " TEMP actuator temperature to 85 ℃ is the temperature of oven interior, and the open vacuum pump vacuumizes 1h to 200Pa to drying oven, and above-mentioned state is kept 2h;
Six, main transformer oiling: the fuel-displaced valve of opening oil storage tank is to the main transformer oiling in the drying oven; Behind the oiling 0.8-1.2h, oiling reaches the transducer place of baking oven liquid level appearance, and oiling stops automatically; Temperature is 85 ℃ in the oiling process; Vacuum degree is reduced to 900Pa from 200Pa, after oiling finishes, keeps 30min;
Seven, oiling finishes: close the fuel-displaced valve of oil storage tank, open the vent valve of drying oven, when the Pressure gauge index of treating baking oven reduces to zero; Can open oven door, close 50 valve of main transformer earlier, dismantle oiling frock and liquid level appearance again; The top tank top cover is tightened, and oiling this moment finishes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110277665 CN102360756B (en) | 2011-09-19 | 2011-09-19 | Vacuum drying oiling method for main transformer of electric locomotive |
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| CN 201110277665 CN102360756B (en) | 2011-09-19 | 2011-09-19 | Vacuum drying oiling method for main transformer of electric locomotive |
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| CN102360756A true CN102360756A (en) | 2012-02-22 |
| CN102360756B CN102360756B (en) | 2013-03-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208361A (en) * | 2013-03-29 | 2013-07-17 | 徐州格利尔科技有限公司 | Transformer vacuum paint-dipping process |
| CN104733164A (en) * | 2013-12-19 | 2015-06-24 | 四川高精净化设备有限公司 | Vacuum oil injection machine with constant-temperature box |
| CN105140014A (en) * | 2015-09-24 | 2015-12-09 | 江苏宏源电气有限责任公司 | Method for oil injection of liquid immersed type distribution transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005197461A (en) * | 2004-01-07 | 2005-07-21 | Chubu Electric Power Co Inc | Method for treating insulating oil of electric apparatus |
| CN101552096A (en) * | 2008-12-25 | 2009-10-07 | 中国北车集团大连机车车辆有限公司 | Vacuum oil-filling method for electric locomotive core-type transformer and radiator |
-
2011
- 2011-09-19 CN CN 201110277665 patent/CN102360756B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005197461A (en) * | 2004-01-07 | 2005-07-21 | Chubu Electric Power Co Inc | Method for treating insulating oil of electric apparatus |
| CN101552096A (en) * | 2008-12-25 | 2009-10-07 | 中国北车集团大连机车车辆有限公司 | Vacuum oil-filling method for electric locomotive core-type transformer and radiator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208361A (en) * | 2013-03-29 | 2013-07-17 | 徐州格利尔科技有限公司 | Transformer vacuum paint-dipping process |
| CN104733164A (en) * | 2013-12-19 | 2015-06-24 | 四川高精净化设备有限公司 | Vacuum oil injection machine with constant-temperature box |
| CN105140014A (en) * | 2015-09-24 | 2015-12-09 | 江苏宏源电气有限责任公司 | Method for oil injection of liquid immersed type distribution transformer |
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| CN102360756B (en) | 2013-03-06 |
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Application publication date: 20120222 Assignee: South, Changzhou Car Track vehicular traffic Co., Ltd Assignor: CHINA NANCHE GROUP QISHUYAN LOCOMOTIVE VEHICLE Co., Ltd. Contract record no.: 2015320000365 Denomination of invention: Vacuum drying oiling method for main transformer of electric locomotive Granted publication date: 20130306 License type: Exclusive License Record date: 20150526 |
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