CN108630421A - Forced oil-circulation transformer oil-immersed pump replacing options - Google Patents
Forced oil-circulation transformer oil-immersed pump replacing options Download PDFInfo
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- CN108630421A CN108630421A CN201810372589.6A CN201810372589A CN108630421A CN 108630421 A CN108630421 A CN 108630421A CN 201810372589 A CN201810372589 A CN 201810372589A CN 108630421 A CN108630421 A CN 108630421A
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- oil
- transformer
- valve
- immersed pump
- oil tank
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention relates to a kind of forced oil-circulation transformer oil-immersed pump replacing options, include the following steps：S100：Connection oil tank of transformer is closed with first valve of oil-immersed pump one end and is connected to the second valve of oil tank of transformer and the oil-immersed pump other end；S200：The fuel outlet valve of oil tank of transformer is opened, the insulating oil in oil tank of transformer is discharged so that the top airbreak of oil tank of transformer ensures that insulating oil floods iron core；S300：Exhaust tube and vacuum pump are provided, one end of exhaust tube is connected to vacuum pump, the other end of exhaust tube is connected to the top of oil tank of transformer, starts vacuum pump and is vacuumized so that oil tank of transformer is in negative pressure state；S400：Replace oil-immersed pump.Above-mentioned forced oil-circulation transformer oil-immersed pump replacing options, vacuumize oil tank of transformer using vacuum pump so that oil tank of transformer is in negative pressure state, ensures naked oil leakage at the first valve and the second valve, to easily realize that oil-immersed pump is replaced.
Description
Technical field
The present invention relates to transformer technology fields, more particularly to a kind of forced oil-circulation transformer oil-immersed pump replacement side
Method.
Background technology
For forced oil-circulation transformer, when its oil-immersed pump needs replacing, if the valve positioned at oil-immersed pump both ends exists
Failure is not closed completely, then can cause insulating oil that can not drain, and oil-immersed pump cannot be replaced directly.Normal practice is by whole insulating oils
The replacement of oil-immersed pump is carried out after drained again.However, necessarily lead to transformer winding airbreak since insulating oil is all drained, it must
After preceding experiment must be carried out repairing, oil extraction, nitrogen charging, oil strain in tank, denitrogen, vacuum oil, hot-oil circulation, repairing, standing, being vented, repair
The multiple working procedures such as experiment take about one week, and operation construction period is long, time-consuming and laborious.And transformer winding airbreak is easy to make moist, maintenance
Risk is big.In addition during carrying out hot-oil circulation process, oil filter failure or misoperation are also easy pollution transformer
Winding.
Invention content
Based on this, the invention reside in overcoming the deficiencies of existing technologies, a kind of forced oil-circulation transformer oil-immersed pump is provided more
Method is changed, the replacement of oil-immersed pump is facilitated.
A kind of forced oil-circulation transformer oil-immersed pump replacing options, include the following steps：
S100：It closes connection oil tank of transformer and first valve of oil-immersed pump one end and is connected to oil tank of transformer and oil-immersed pump
Second valve of the other end；
S200：The fuel outlet valve of oil tank of transformer is opened, the insulating oil in oil tank of transformer is discharged so that oil tank of transformer
Top airbreak ensures that insulating oil floods iron core；
S300：Exhaust tube and vacuum pump are provided, one end of exhaust tube is connected to vacuum pump, by the other end of exhaust tube and
The top of oil tank of transformer is connected to, and is started vacuum pump and is vacuumized so that oil tank of transformer is in negative pressure state；
S400：Replace oil-immersed pump.
Above-mentioned forced oil-circulation transformer oil-immersed pump replacing options, vacuumize oil tank of transformer using vacuum pump,
So that oil tank of transformer is in negative pressure state, ensure naked oil leakage at the first valve and the second valve, to easily real
Existing oil-immersed pump is replaced.The forced oil-circulation transformer oil-immersed pump replacing options, have following advantages：
1, insulating oil discharge capacity is few.Only need a small amount of insulating oil at the top of discharge oil tank of transformer, about Normal practice discharge capacity
1/20th, corresponding oil storage tank is using small-sized.
2, process is few.Due to the non-airbreak of transformer winding, maintenance duration about one day reduces idle time and manpower object
Power substantially shortens operation construction period and saves maintenance expense.
3, maintenance risk is small.Transformer winding will not make moist, and without hot-oil circulation process, there is no because of oil filter failure
Or misoperation leads to the contaminated risk of transformer winding.
Further, further comprising the steps of after S200 and before S300：
S210：Close the third valve of connection oil tank of transformer and pressure relief valve.
It so, it is possible to ensure that oil tank of transformer is in negative pressure state during vacuumizing, improve operational reliability.
Further, further comprising the steps of after S200 and before S300：
S220：It removes the 4th valve of connection oil tank of transformer and Buchholz relay and loads onto closure plate.
It so, it is possible to prevent Buchholz relay during vacuumizing impaired, improve operational security.
Further, in s 200, ensure that insulating oil did not had the top 50mm to 150mm of iron core, reduce transformer winding
The possibility that airbreak is made moist.
Further, S300 specifically includes following steps：
S300(a)：Vacuum meter and switch valve are provided, the closure plate of oil fuel tube one end of oil tank of transformer is removed and loads onto vacuum
Table loads onto switch valve in the oil fuel tube other end of oil tank of transformer；
S300(b)：Exhaust tube and vacuum pump are provided, one end of exhaust tube is connected to vacuum pump, by the another of exhaust tube
End is connected to switch valve, turns on the switch valve, is started vacuum pump and is vacuumized so that oil tank of transformer is in negative pressure state.
The oil fuel tube of oil tank of transformer is reequiped, the oil fuel tube both ends of oil tank of transformer load onto respectively vacuum meter and
Switch valve, vacuum meter is for the air pressure in measuring transformer fuel tank, and switch valve is used to control the break-make of exhaust tube, to assist realizing
Oil tank of transformer vacuumizes.
Further, in S300 (b), start vacuum pump and vacuumized, vacuum meter registration is kept to be in -0.05MPa
To -0.15MPa so that oil tank of transformer is in negative pressure state.
Vacuum meter registration is in -0.05MPa to -0.15MPa, and the air pressure in oil tank of transformer will not be excessive or too small, has
It is safe conducive to vacuumizing being smoothed out for operation.
Further, S400 specifically includes following steps：
S400(a)：Whether observe at the first valve and the second valve has insulating oil leakage；
S400(b)：The leakproofness of oil tank of transformer is examined to reform S400 (a) again if having insulating oil leakage, if naked
Oil leakage then removes old oil-immersed pump and loads onto new oil-immersed pump.
Naked oil is revealed at first valve and the second failsafe valve, and the insulating oil in old oil-immersed pump can be quickly drained,
I.e. replaceable new oil-immersed pump.
Further, it in S400 (b), covers and protects at the first valve and/or the second valve if naked oil is revealed
Sheath removes old oil-immersed pump and loads onto new oil-immersed pump again.
It so, it is possible to prevent foreign matter from from the first valve and/or the second failsafe valve entering in oil tank of transformer, avoid absolutely
Edge oil is contaminated.
Further, the protective layer is white cloth, and materials are easy.
Further, further comprising the steps of after S400：
S500：It keeps vacuum pump work for a period of time, the gas in the insulating oil in oil tank of transformer is fully precipitated；
S600：Again insulating oil is injected in oil tank of transformer.
It so, it is possible to reduce the gas in insulating oil, safety and reliability.
Description of the drawings
Fig. 1 is the structural schematic diagram of the forced oil-circulation transformer described in the embodiment of the present invention.
Reference sign：
1, oil tank of transformer, 2, oil-immersed pump, the 3, first valve, the 4, second valve, 5, fuel outlet valve, 6, iron core, 7, exhaust tube,
8, vacuum pump, 9, pressure relief valve, 10, third valve, 11, Buchholz relay, the 12, the 4th valve, 13, closure plate, 14, switch
Valve, 15, oil fuel tube.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes, it is not offered as being unique embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant Listed Items.
In conjunction with shown in Fig. 1, the forced oil-circulation transformer oil-immersed pump replacing options described in the present embodiment, including following step
Suddenly：
S100：It closes connection oil tank of transformer 1 and first valve 3 of 2 one end of oil-immersed pump and is connected to oil tank of transformer 1 and dives
Second valve 4 of 2 other end of oil pump.
Specifically, the first valve 3 described in the present embodiment and the second valve 4 are butterfly valve.
S200：The fuel outlet valve 5 of oil tank of transformer 1 is opened, the insulating oil in oil tank of transformer 1 is discharged so that transformer oil
The top airbreak of case 1 ensures that insulating oil floods iron core 6.
Preferably, in s 200, ensure that insulating oil did not had the top 50mm to 150mm of iron core 6, reduce transformer winding dew
The possibility that sky makes moist.In the present embodiment, ensure that insulating oil did not had the top 100mm of iron core 6.
It should be noted that S100 and S200 executes S200, Ke Yixian without sequence requirement is executed after can first carrying out S100
S100 is executed after executing S200, S100 and S200 can also be performed simultaneously.
S210：Close the third valve 10 of connection oil tank of transformer 1 and pressure relief valve 9.
It so, it is possible to ensure that oil tank of transformer 1 is in negative pressure state during vacuumizing, improve operational reliability.
Specifically, the third valve 10 described in the present embodiment is butterfly valve.
S220：It removes the 4th valve 12 of connection oil tank of transformer 1 and Buchholz relay 11 and loads onto closure plate.
It so, it is possible to prevent the Buchholz relay 11 during vacuumizing impaired, improve operational security.
Specifically, the 4th valve 12 described in the present embodiment is butterfly valve.
It should be noted that S210 and S220 executes S220, Ke Yixian without sequence requirement is executed after can first carrying out S210
S210 is executed after executing S220, S210 and S220 can also be performed simultaneously.
S300：Exhaust tube 7 and vacuum pump 8 are provided, one end of exhaust tube 7 is connected to vacuum pump 8, by the another of exhaust tube 7
One end is connected to the top of oil tank of transformer 1, is started vacuum pump 8 and is vacuumized so that oil tank of transformer 1 is in negative pressure shape
State.
Further, S300 specifically includes following steps：
S300(a)：Vacuum meter and switch valve 14 are provided, remove the closure plate 13 of 15 one end of oil fuel tube of oil tank of transformer 1 simultaneously
Vacuum meter is loaded onto, switch valve 14 is loaded onto in 15 other end of oil fuel tube of oil tank of transformer 1；
S300(b)：Exhaust tube 7 and vacuum pump 8 are provided, one end of exhaust tube 7 is connected to vacuum pump 8, by exhaust tube 7
The other end is connected to switch valve 14, turns on the switch valve 14, is started vacuum pump 8 and is vacuumized so that oil tank of transformer 1 is in negative
Pressure condition.
The oil fuel tube 15 of oil tank of transformer 1 is reequiped, is loaded onto respectively very at 15 both ends of oil fuel tube of oil tank of transformer 1
Empty table and switch valve 14, for vacuum meter for the air pressure in measuring transformer fuel tank 1, switch valve 14 is used to control the logical of exhaust tube 7
It is disconnected, vacuumizing for oil tank of transformer 1 is realized with auxiliary.
Preferably, in S300 (b), start vacuum pump 8 and vacuumized, vacuum meter registration is kept to be in -0.05MPa
To -0.15MPa so that oil tank of transformer 1 is in negative pressure state.In the present embodiment, start vacuum pump 8 to be vacuumized, protect
It holds vacuum meter registration and is in -0.1MPa.
Vacuum meter registration is in -0.05MPa to -0.15MPa, and the air pressure in oil tank of transformer 1 will not be excessive or too small, has
It is safe conducive to vacuumizing being smoothed out for operation.
S400：Replace oil-immersed pump 2.
Further, S400 specifically includes following steps：
S400(a)：Whether observe at the first valve 3 and the second valve 4 has insulating oil leakage；
S400(b)：The leakproofness of oil tank of transformer 1 is examined to reform S400 (a) again if having insulating oil leakage, if naked
Oil leakage then removes old oil-immersed pump and loads onto new oil-immersed pump.
Naked oil is revealed at 4 failure of first valve 3 and the second valve, and the insulating oil in old oil-immersed pump can be arranged quickly
It is complete, you can more to renew oil-immersed pump.
Preferably, it in S400 (b), covers and protects at the first valve 3 and/or the second valve 4 if naked oil is revealed
Sheath removes old oil-immersed pump and loads onto new oil-immersed pump again.
It so, it is possible to prevent foreign matter from from 4 failure of the first valve 3 and/or the second valve entering in oil tank of transformer 1, keep away
It is contaminated to exempt from insulating oil.
In the present embodiment, the protective layer is white cloth, and materials are easy.
S500：It is kept for the work a period of time of vacuum pump 8, the gas in the insulating oil in oil tank of transformer 1 is fully precipitated；
S600：Again insulating oil is injected in oil tank of transformer 1.
It so, it is possible to reduce the gas in insulating oil, safety and reliability.
Above-mentioned forced oil-circulation transformer oil-immersed pump replacing options to oil tank of transformer 1 take out true using vacuum pump 8
It is empty so that oil tank of transformer 1 is in negative pressure state, ensures naked oil leakage at the first valve 3 and the second valve 4, to light
Loose ground realizes that oil-immersed pump 2 is replaced.The forced oil-circulation transformer oil-immersed pump replacing options, have following advantages：
1, insulating oil discharge capacity is few.Only need a small amount of insulating oil at the top of discharge oil tank of transformer 1, about Normal practice discharge capacity
1/20th, corresponding oil storage tank is using small-sized.
2, process is few.Due to the non-airbreak of transformer winding, maintenance duration about one day reduces idle time and manpower object
Power substantially shortens operation construction period and saves maintenance expense.
3, maintenance risk is small.Transformer winding will not make moist, and without hot-oil circulation process, there is no because of oil filter failure
Or misoperation leads to the contaminated risk of transformer winding.
The technical program can replace oil-immersed pump 2 in the case where being changed without the first valve 3 and the second valve 4, in transformation
The top of device fuel tank 1 vacuumizes so that naked oil stream goes out at failure valve, to easily replace oil-immersed pump 2.From guarantee equipment
Safe operation and the angle for reducing equipment idle time to the greatest extent are set out, and are only replaced oil-immersed pump 2 and are changed without its both ends failure valve
The safe operation of forced oil-circulation transformer is had no effect on, and can substantially shorten maintenance duration, maintenance risk is reduced, saves inspection
Repair expense.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of forced oil-circulation transformer oil-immersed pump replacing options, which is characterized in that include the following steps：
S100：It closes connection oil tank of transformer and first valve of oil-immersed pump one end and to be connected to oil tank of transformer another with oil-immersed pump
Second valve at end；
S200：The fuel outlet valve of oil tank of transformer is opened, the insulating oil in oil tank of transformer is discharged so that the top of oil tank of transformer
Airbreak ensures that insulating oil floods iron core；
S300：Exhaust tube and vacuum pump are provided, one end of exhaust tube is connected to vacuum pump, by the other end and transformation of exhaust tube
The top of device fuel tank is connected to, and is started vacuum pump and is vacuumized so that oil tank of transformer is in negative pressure state；
S400：Replace oil-immersed pump.
2. forced oil-circulation transformer oil-immersed pump replacing options according to claim 1, which is characterized in that after S200
It is further comprising the steps of before S300：
S210：Close the third valve of connection oil tank of transformer and pressure relief valve.
3. forced oil-circulation transformer oil-immersed pump replacing options according to claim 1, which is characterized in that after S200
It is further comprising the steps of before S300：
S220：It removes the 4th valve of connection oil tank of transformer and Buchholz relay and loads onto closure plate.
4. forced oil-circulation transformer oil-immersed pump replacing options according to claim 1, which is characterized in that in s 200,
Ensure that insulating oil did not had the top 50mm to 150mm of iron core.
5. forced oil-circulation transformer oil-immersed pump replacing options according to claim 1, which is characterized in that S300 is specifically wrapped
Include following steps：
S300(a)：Vacuum meter and switch valve are provided, the closure plate of oil fuel tube one end of oil tank of transformer is removed and loads onto vacuum meter,
Switch valve is loaded onto in the oil fuel tube other end of oil tank of transformer；
S300(b)：Exhaust tube and vacuum pump are provided, one end of exhaust tube is connected to vacuum pump, by the other end of exhaust tube and
Switch valve is connected to, and turns on the switch valve, is started vacuum pump and is vacuumized so that oil tank of transformer is in negative pressure state.
6. forced oil-circulation transformer oil-immersed pump replacing options according to claim 5, which is characterized in that in S300 (b)
In, start vacuum pump and vacuumized, keeps vacuum meter registration to be in -0.05MPa to -0.15MPa so that at oil tank of transformer
In negative pressure state.
7. forced oil-circulation transformer oil-immersed pump replacing options according to claim 1, which is characterized in that S400 is specifically wrapped
Include following steps：
S400(a)：Whether observe at the first valve and the second valve has insulating oil leakage；
S400(b)：The leakproofness of oil tank of transformer is examined to reform S400 (a) again if having insulating oil leakage, if naked oil is let out
Dew then removes old oil-immersed pump and loads onto new oil-immersed pump.
8. forced oil-circulation transformer oil-immersed pump replacing options according to claim 7, which is characterized in that in S400 (b)
In, protective mulch removes old oil-immersed pump and loads onto new again at the first valve and/or the second valve if naked oil is revealed
Oil-immersed pump.
9. forced oil-circulation transformer oil-immersed pump replacing options according to claim 8, which is characterized in that the protective layer
For white cloth.
10. according to claim 1-9 any one of them forced oil-circulation transformer oil-immersed pump replacing options, which is characterized in that
It is further comprising the steps of after S400：
S500：It keeps vacuum pump work for a period of time, the gas in the insulating oil in oil tank of transformer is fully precipitated；
S600：Again insulating oil is injected in oil tank of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372589.6A CN108630421A (en) | 2018-04-24 | 2018-04-24 | Forced oil-circulation transformer oil-immersed pump replacing options |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372589.6A CN108630421A (en) | 2018-04-24 | 2018-04-24 | Forced oil-circulation transformer oil-immersed pump replacing options |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108630421A true CN108630421A (en) | 2018-10-09 |
Family
ID=63694344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810372589.6A Pending CN108630421A (en) | 2018-04-24 | 2018-04-24 | Forced oil-circulation transformer oil-immersed pump replacing options |
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| CN (1) | CN108630421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027800A (en) * | 2021-03-19 | 2021-06-25 | 浙江尔格科技股份有限公司 | Air pump impeller overspeed test platform and test method adopting SF6 gas medium |
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| CN102709826A (en) * | 2012-06-25 | 2012-10-03 | 河南省电力公司南阳供电公司 | Transformer heat radiating tube butterfly valve maintenance device and method |
| CN103996985A (en) * | 2014-06-11 | 2014-08-20 | 云南电网公司昆明供电局 | Method for overhauling oil leakage existing on middle portion and lower portion of large transformer by means of pressure intensity balance |
| CN107516840A (en) * | 2017-10-12 | 2017-12-26 | 国家电网公司 | The method for changing transformer bottom butterfly valve |
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2018
- 2018-04-24 CN CN201810372589.6A patent/CN108630421A/en active Pending
Patent Citations (3)
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| CN102709826A (en) * | 2012-06-25 | 2012-10-03 | 河南省电力公司南阳供电公司 | Transformer heat radiating tube butterfly valve maintenance device and method |
| CN103996985A (en) * | 2014-06-11 | 2014-08-20 | 云南电网公司昆明供电局 | Method for overhauling oil leakage existing on middle portion and lower portion of large transformer by means of pressure intensity balance |
| CN107516840A (en) * | 2017-10-12 | 2017-12-26 | 国家电网公司 | The method for changing transformer bottom butterfly valve |
Non-Patent Citations (1)
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| CN113027800A (en) * | 2021-03-19 | 2021-06-25 | 浙江尔格科技股份有限公司 | Air pump impeller overspeed test platform and test method adopting SF6 gas medium |
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Application publication date: 20181009 |