CN108666091A - A kind of transformer belt electrofiltration oil system with inrush current prevention function - Google Patents
A kind of transformer belt electrofiltration oil system with inrush current prevention function Download PDFInfo
- Publication number
- CN108666091A CN108666091A CN201810259173.3A CN201810259173A CN108666091A CN 108666091 A CN108666091 A CN 108666091A CN 201810259173 A CN201810259173 A CN 201810259173A CN 108666091 A CN108666091 A CN 108666091A
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- CN
- China
- Prior art keywords
- oil
- filtering tank
- transformer
- main filtering
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention relates to a kind of oil-filtering apparatus, more specifically, it is related to a kind of transformer belt electrofiltration oil system with inrush current prevention function, it include main filtering tank, it is connected by frequency conversion oil drain pump between the input terminal of main filtering tank and the output end of draining valve, the output end of main filtering tank and the input terminal of fuel feeding valve connect；It is equipped with input pressure monitoring device between draining valve and main filtering tank and into pressure tank monitoring device, the pressure change for monitoring transformer oil realizes the slow raising of oil pressure by frequency conversion oil drain pump, avoids oil drain pump from starting suddenly, shut down to generate and shove.
Description
Technical field
The present invention relates to oil-filtering apparatus, more particularly, to a kind of transformer belt electrofiltration oil system with inrush current prevention function
System.
Background technology
Transformer oil plays the role of insulation and cooling in transformer.In the process of running, transformer oil can be by for transformer
There is performance decline in a variety of causes：Moisture and metal ion increase, and dielectric loss increases, breakdown voltage, flash-point voltage and volume electricity
Resistance rate declines, and the insulation resistance of oilpaper material is caused to decline, and seriously threatens the safe operation of transformer.To improve transformer oil
Various performance indicators, with sufficiently high pressure voltage, when transformer oil deterioration to a certain extent when need to transformer
Oil is filtered.
Transformer power failure oil strain needs the filtering for completing multiple cycle oil masses since transformer oil mass is big, if insulating oil
Deterioration influences winding insulation resistance, also to carry out the dehydration of winding, generally require more days continuous oil strains, and even more than ten is genius sometimes
It completes, seriously affects power supply reliability, or even cause the power failure of client.To avoid transformer from having a power failure for a long time, transformer electrification
The demand that oil strain has reality urgent, a variety of electrification oil filters are used by exploitation and regional area.Transformer belt electricity oil-filtering apparatus one
As include transformer Valve joint, oil drain pump, oil processing tank, temperature measuring equipment, pressure monitoring device, electric control unit composition,
Wherein oil processing tank is mainly made of heater, filter core, further includes partly vacuum dehydration degasser.
Transformer belt electrofiltration oil needs oil drain pump that transformer oil is forced to be recycled into oil filter, in oil drain pump shutdown process,
It is easy to cause transformer oil appearance to spring up suddenly, existing causes ontology grave gas malfunction to jump each side switch of main transformer, interrupts transformer
The risk of operation and customer power supply；Oil stream springs up the impurity that may also take up transformer precipitation suddenly, causes inside transformer
The variation of electric field or even internal field are excessive and discharge.
Therefore transformer belt electricity oil-filtering apparatus needs inrush current prevention system, prevents the suddenly change for causing transformer oil stream.
Invention content
The present invention is at least one defect overcome described in the above-mentioned prior art, provides a kind of change with inrush current prevention function
Depressor charges oil filtering system, and the slow raising of oil pressure is realized by frequency conversion oil drain pump, avoids oil drain pump from starting suddenly, shut down generation
It shoves.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of transformer with inrush current prevention function
Oil filtering system is charged, includes main filtering tank, passes through frequency conversion oil extraction between the input terminal of main filtering tank and the output end of draining valve
Pump connection, the output end of main filtering tank and the input terminal of fuel feeding valve connect；Input pressure is equipped between draining valve and main filtering tank
Monitoring device and into pressure tank monitoring device, the pressure change for monitoring transformer oil.
In the present invention, is connected, passed through by frequency conversion oil drain pump between the input terminal of main filtering tank and the output end of draining valve
Transformer oil pump is become owner of filtering tank and is filtered by frequency conversion oil drain pump.In order to avoid shoving in oil filtering system, frequency conversion oil extraction
Pump starts the slow start since low frequency every time, until reaching specified running speed；When shutdown, slowly slow down until stopping
Machine avoids frequency conversion oil drain pump from starting suddenly, shuts down to generate and shove.The output end of main filtering tank is connected with fuel feeding valve, passes through oiling
Valve is by filtered transformer oil injection transformer.
In one embodiment, if main filtering tank is equipped with dried layer filter core, the filtering of moisture and impurity is realized respectively.
If being equipped with dried layer filter core in main filtering tank, different filter cores corresponds to different impurity screenings, real by multistage filtering
Now to the filtration treatment of transformer oil.
Preferably, main filtering tank is equipped with resistance heater, realizes the heating of transformer oil.
In order to fully be removed to the moisture in transformer oil in transformer oil filter process, it is equipped in main filtering tank
Resistance heater evaporates the moisture in transformer oil by resistive heater heats transformer oil.
Preferably, fuel-displaced pressure monitoring device and flow monitoring device are equipped between main filtering tank and fuel feeding valve, for supervising
Survey the fuel-displaced pressure change of main filtering tank and fuel-displaced change in flow.
Fuel-displaced pressure monitoring device is equipped between main filtering tank and fuel feeding valve, the transformer oil filtered by main filtering tank
It flows through fuel-displaced pressure monitoring device and enters fuel feeding valve, the pressure of transformer oil is monitored by fuel feeding valve.Pass through stream simultaneously
Slowdown monitoring device monitoring transformer oil flow velocity.
Preferably, between draining valve and main filtering tank check-valves is equipped between main filtering tank and fuel feeding valve.
It is equipped with check-valves between draining valve and main filtering tank, avoids during handling transformer oil, transformer oil falls
It is flow back into draining valve, transformer is entered by draining valve.It is equipped with check-valves between main filtering tank and fuel feeding valve, avoids processing
Transformer oil flow backwards enter main filtering tank.
In the present invention, using transformer oil dead weight oil inlet, frequency conversion oil drain pump pressurizes to transformer oil, realizes transformer
Charge continuous oil strain.By the pressure monitoring device being equipped in systems, further increases the safety in filter process and prevent
It shoves performance.Meanwhile it being equipped with check-valves in systems, it avoids processed transformer oil from flowing backwards and enters main filtering tank, lead to simultaneously
Crossing check-valves can effectively prevent shoving.
Description of the drawings
Fig. 1 is overall structure diagram in the present invention.
Specific implementation mode
Attached drawing only for illustration, is not considered as limiting the invention；It is attached in order to more preferably illustrate the present embodiment
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of position relationship described in attached drawing
Illustrate, is not considered as limiting the invention.
Embodiment 1：
As shown in Figure 1, the present invention provides a kind of transformer belt electrofiltration oil system with inrush current prevention function, include main filtering tank
1, transformer oil is in transformer, by 2 flow ipe of draining valve, flows into input pressure monitoring device 21 through piping, passes through
Input pressure monitoring device 21 monitors variation and the range of input pressure.When input pressure does not change, transformer oil, which flows into, to be become
Frequency oil drain pump 3, frequency conversion oil drain pump 3 carry out transformer oil to stablize suction, avoid causing transformation in system since pump oil is unstable
Device oil shoves.
In the present embodiment, the transformer oil that frequency conversion oil drain pump 3 is discharged is entered through piping into pressure tank monitoring device 22,
By being monitored the pressure of transformer oil into pressure tank monitoring device 22, avoid causing due to oil drain pump oil extraction hypertonia
System problem, while can also shove in time according in pressure change discovery system, problem of shoving is excluded in time.
As shown in Figure 1, after transformer oil enters main filtering tank 1, processing is filtered in main filtering tank 1.Main filtering tank 1
If dried layer filter core is equipped in, different filter cores corresponds to different impurity screenings, by multistage filtering, realizes the mistake to transformer oil
Filter is handled.It is equipped with resistance heater in main filtering tank 1, by resistive heater heats transformer oil, evaporates in transformer oil
Moisture.
As shown in Figure 1, after fuel-displaced pressure monitoring device 51 monitors, transformer oil enters flow monitoring device 52, flow velocity
Flow velocity of the monitoring of monitoring device 52 into the transformer oil of fuel feeding valve 6.
In the present embodiment, check-valves 7 is equipped between draining valve and main filtering tank, between main filtering tank and fuel feeding valve 6
Equipped with check-valves 8.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (5)
1. a kind of transformer belt electrofiltration oil system with inrush current prevention function, which is characterized in that include main filtering tank, main filtering
Connected by frequency conversion oil drain pump between the input terminal of tank and the output end of draining valve, the output end of main filtering tank and fuel feeding valve it is defeated
Enter end connection；Equipped with input pressure monitoring device and into pressure tank monitoring device between draining valve and main filtering tank, for monitoring
The pressure change of transformer oil.
2. the transformer belt electrofiltration oil system according to claim 1 with inrush current prevention function, which is characterized in that the master
If filtering tank is equipped with dried layer filter core, the filtering of moisture and impurity is realized respectively.
3. the transformer belt electrofiltration oil system according to claim 2 with inrush current prevention function, which is characterized in that the master
Filtering tank is equipped with resistance heater, realizes the heating of transformer oil.
4. the transformer belt electrofiltration oil system according to claim 1 with inrush current prevention function, which is characterized in that the master
Fuel-displaced pressure monitoring device and flow monitoring device, the pressure fuel-displaced for monitoring main filtering tank are equipped between filtering tank and fuel feeding valve
Power changes and fuel-displaced change in flow.
5. the transformer belt electrofiltration oil system according to any one of claims 1 to 4 with inrush current prevention function, feature exist
In being equipped with check-valves between main filtering tank and fuel feeding valve between the draining valve and main filtering tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810259173.3A CN108666091A (en) | 2018-03-27 | 2018-03-27 | A kind of transformer belt electrofiltration oil system with inrush current prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810259173.3A CN108666091A (en) | 2018-03-27 | 2018-03-27 | A kind of transformer belt electrofiltration oil system with inrush current prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108666091A true CN108666091A (en) | 2018-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810259173.3A Pending CN108666091A (en) | 2018-03-27 | 2018-03-27 | A kind of transformer belt electrofiltration oil system with inrush current prevention function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108666091A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671555A (en) * | 2018-11-14 | 2019-04-23 | 沈阳大型电力变压器维修有限公司 | A kind of oil filtering unit for EHV transformer electrification oil strain |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101018814B1 (en) * | 2011-01-11 | 2011-03-04 | 주식회사 시프트 | Apparatus and method for eliminating moisture in the insulation of transformer on a live wire |
| CN202860271U (en) * | 2012-11-15 | 2013-04-10 | 北京鑫佰利科技发展有限公司 | Efficient oil filter |
| CN206076003U (en) * | 2016-07-19 | 2017-04-05 | 华电宁夏灵武发电有限公司 | A kind of micro-water in transformer oil Online Processing System |
| CN107216939A (en) * | 2017-07-11 | 2017-09-29 | 国家电网公司 | The vacuum suction regeneration comprehensive processing system of insulating oil and its application |
| CN208400671U (en) * | 2018-03-27 | 2019-01-18 | 广东电网有限责任公司佛山供电局 | A kind of transformer belt electrofiltration oil system with inrush current prevention function |
-
2018
- 2018-03-27 CN CN201810259173.3A patent/CN108666091A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101018814B1 (en) * | 2011-01-11 | 2011-03-04 | 주식회사 시프트 | Apparatus and method for eliminating moisture in the insulation of transformer on a live wire |
| CN202860271U (en) * | 2012-11-15 | 2013-04-10 | 北京鑫佰利科技发展有限公司 | Efficient oil filter |
| CN206076003U (en) * | 2016-07-19 | 2017-04-05 | 华电宁夏灵武发电有限公司 | A kind of micro-water in transformer oil Online Processing System |
| CN107216939A (en) * | 2017-07-11 | 2017-09-29 | 国家电网公司 | The vacuum suction regeneration comprehensive processing system of insulating oil and its application |
| CN208400671U (en) * | 2018-03-27 | 2019-01-18 | 广东电网有限责任公司佛山供电局 | A kind of transformer belt electrofiltration oil system with inrush current prevention function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671555A (en) * | 2018-11-14 | 2019-04-23 | 沈阳大型电力变压器维修有限公司 | A kind of oil filtering unit for EHV transformer electrification oil strain |
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Effective date of registration: 20191023 Address after: 528011 No. 1 South Fenjiang Road, Chancheng District, Guangdong, Foshan Applicant after: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CORPORATION Address before: 528011 No. 1 South Fenjiang Road, Chancheng District, Guangdong, Foshan Applicant before: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CORPORATION Applicant before: Shenyang Large Power Transformer Maintenance Co., Ltd. |