CN207868022U - A kind of oil-immersed transformer not oil extraction apparatus for examination and repair - Google Patents
A kind of oil-immersed transformer not oil extraction apparatus for examination and repair Download PDFInfo
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- CN207868022U CN207868022U CN201820301131.7U CN201820301131U CN207868022U CN 207868022 U CN207868022 U CN 207868022U CN 201820301131 U CN201820301131 U CN 201820301131U CN 207868022 U CN207868022 U CN 207868022U
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Abstract
The utility model is related to the technical fields of electric system maintenance, more specifically, it is related to a kind of oil-immersed transformer not oil extraction apparatus for examination and repair, including balance pressure generating unit and balance pressure sensing cell, balance pressure generating unit is connected to the end of the dehydrating breather connecting leg, and the balance pressure sensing cell is connect with draining valve.The utility model utilizes the equal principle of same inactive liquid sustained height pressure, by being evacuated to installation for transformer, make to generate negative pressure inside conservator, to form the transformer oil pressure with atmospheric equilibrium in transformer accessory maintenance department, not oil spilling, non-air-breathing when making dismounting attachment, realize that the mode of not oil extraction carries out transformer accessory dismounting maintenance and leakage oil processing, the risk for avoiding additional work, transformer oil that transformer oil extraction brings from being contaminated, to reduce workload, shorten the construction time, improves efficiency.And entire maintenance process need not shift transformer oil, not be mixed into the link of air, the loss of maintenance process transformer oil is less.
Description
Technical field
The utility model is related to the technical fields of electric system maintenance, not more particularly, to a kind of oil-immersed transformer
Oil extraction apparatus for examination and repair.
Background technology
Oil-immersed transformer carries out the maintenance of the attachmentes such as casing, pressure relief valve, radiator exhaust valve, leakage oil processing, tears open
These components are filled, need transformer oil being emitted into these component mounting flanges hereinafter, can carry out.Work terminates, will
Transformer oil is supplemented back again in transformer.If installation for transformer can accommodate the transformer oil for needing to be discharged, pass is generally taken
Ontology gas both sides pipeline valve is closed, is extracted transformer oil out from the draining valve of transformer bottom with oil drain pump, then pass through conservator
Note drain line is directly discharged into conservator；Work terminates, and opens ontology gas both sides pipeline valve, transformer oil is allowed to be injected back into change again
In depressor ontology.If installation for transformer can not accommodate the transformer oil for needing to be discharged, need oil being emitted into oil tank.
However, the former whole process needs to clean oil drain pump and whole connecting tubes, draining valve and fuel feeding valve with transformer oil,
The loss of transformer oil is caused, and is easy that transformer oil is made to be contaminated in transfer process, is mixed into air and makes moist；And ontology
The valve of two side ducts of gas, transformer station high-voltage side bus for a period of time after, the case where being often not closed completely, cause operation process without
Method carries out；The possibility that the latter's transformer is contaminated in transfer process is just relatively high, needs to arrange for oil strain link.It applies in this way
Work tool needs large sizes, high-power Work tool, the construction work amounts such as increase oil tank, oil filter to increase with the time.The transformation of the two
It after the discharge of device oil, supplement, is stood, transformer is respectively vented the work such as valve exhaust so that the construction time extends, workload
Increase.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of oil-immersed transformer not oil extraction maintenance
Device makes the oil level equal with atmospheric pressure in transformer be slightly less than Awaiting Overhaul by adjusting the negative pressure value in installation for transformer
The flange face of attachment, such transformer oil do not overflow, and also air will not be caused to be inhaled into transformer since negative pressure is excessive, i.e.,
The dismounting completion maintenance task that ontology fuel tank not oil extraction carries out attachment can be achieved.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of oil-immersed transformer not oil extraction apparatus for examination and repair is provided, the oil-immersed transformer includes ontology fuel tank, transformation
Device conservator, radiator and the bushing for anchor leg are marked with transformer oil in the ontology fuel tank, ontology fuel tank
Bottom is equipped with draining valve, and top is equipped with pressure relief valve；The radiator be set to the ontology fuel tank side, radiator it is upper
Side is equipped with air bleeding valve；The bushing is set to the top of ontology fuel tank, is equipped between bushing and ontology fuel tank and increases seat；
The installation for transformer is set to the top of the ontology fuel tank, and installation for transformer includes capsule, oil conservater and dehydrating breather connecting leg, institute
Capsule is stated in the oil conservater, dehydrating breather connecting leg is communicated on the capsule；The apparatus for examination and repair includes becoming for adjusting
Air pressure is to the balance pressure generating unit of balance pressure and for showing transformer oil level equal with atmospheric pressure in depressor conservator
The balance pressure sensing cell of height, the balance pressure generating unit is connected to the end of the dehydrating breather connecting leg, described flat
Weighing apparatus pressure sensing cell is connect with draining valve.
The oil-immersed transformer not oil extraction apparatus for examination and repair of the utility model utilizes same inactive liquid sustained height pressure phase
Deng principle negative pressure is generated in installation for transformer by being evacuated to installation for transformer；Logical overbalance pressure detection unit detection
The transformer oil level height equal with atmospheric pressure, when level height equal with atmospheric pressure in transformer be slightly less than overhaul it is attached
When part installing port, stop pumping, and keep the pressure in installation for transformer；At this pressure, transformer oil does not both overflow, also
Air will not be caused to be inhaled into transformer since negative pressure is excessive, realize that dismounting transformer accessory in the case of not oil extraction completes
The service work of transformer accessory；The apparatus for examination and repair of the utility model need not shift transformer oil, not be mixed into maintenance
Air only needs that maintenance piece attachments are exhausted after maintenance, need not stand, shorten working hours；It only needs to make
With valve and control valve is kept, transformer oil loss is seldom, reduces transformer oil loss.
Further, the balance pressure generating unit includes vacuum pump, first pipe connector and keeps valve, described
First pipe connector is connect with dehydrating breather connecting leg, and the vacuum pump is connect with first pipe connector by connecting leg, on the connecting leg
It is connected with the holding valve for keeping air pressure in installation for transformer.When in use, the transformer hose coupler of different size
Pipe joint with different size；Installation for transformer is carried out being pumped to gas pressure in installation for transformer using vacuum pump and is reached
It is required that when, it closes keep valve at this time, keep the gas pressure in installation for transformer to stablize, so that inside transformer is everywhere
Oil pressure is stablized.
Further, the vacuum meter of negative pressure value in monitoring installation for transformer is also associated on the connecting leg.Vacuum meter is real-time
The negative pressure value in installation for transformer is monitored, and vacuum pump can be stopped according to preset vacuum values, then is manually finely tuned.
Further, the tonifying Qi valve for the make-up gas into installation for transformer is also associated on the connecting leg.Surely
When empty pumping gas makes that gas pressure is too low in installation for transformer, the gases such as air or nitrogen can be refilled by tonifying Qi valve, reduced
Gas negative pressure value in installation for transformer.
Further, the vacuum pump is electrically connected with for electric installation, it is described for electric installation include accumulator, AC power with
And onboard charger.Selection for electric installation is extensive, simply easily takes, applied widely.
Further, the balance pressure sensing cell includes second pipe connector and transparent pipe, the second pipe
Connector is connect with draining valve, and one end of the transparent pipe is connect with second pipe connector, and the other end is communicated with air.It is using
When, the pipe joint of the draining valve matching different size of different size；Transparent pipe passes through second pipe connector and transformer oil phase
Even, the height of the transformer oil level balanced with atmospheric pressure can be thus detected.
Further, the transparent pipe is equipped with for controlling the control valve contacted between transparent pipe and transformer oil.
Convenient for connecting, blocking contacting for oil pipe and inside transformer transformer oil, easy access operates for the setting of control valve.
Further, the transparent pipe includes transparent hose and transparent glass tube.It can be used when concrete application transparent soft
The various transparent thin tubes such as pipe, transparent glass tube or combination or other equipment that can accurately measure gas and oil equilibration position.
Compared with prior art, the utility model has the beneficial effects that：
（1）The utility model is using the equal principle of same inactive liquid sustained height pressure, by installation for transformer
Pumping makes to generate negative pressure inside installation for transformer, to form the transformer oil with atmospheric equilibrium in transformer accessory maintenance department
Pressure, not oil spilling, non-air-breathing when making dismounting attachment, realizes that the mode of not oil extraction carries out at transformer accessory dismounting maintenance and leakage of oil
Reason, the risk for avoiding additional work, transformer oil that transformer oil extraction brings from being contaminated, to reduce workload, shortening is applied
Between working hour, efficiency is improved.
（2）The entire maintenance process of the utility model need not shift transformer oil, not be mixed into the link of air, maintenance knot
Beam, it is only necessary to maintenance piece attachments are exhausted, link need not be stood, shortened working hours；And maintenance process becomes
The loss of depressor oil is less.
（3）The maintenance process of the utility model need not close the valve of transformer body gas both sides, entirely overhaul
Journey is not closed completely by valve to be influenced.
Description of the drawings
Fig. 1 is the structural schematic diagram of the oil-immersed transformer not oil extraction apparatus for examination and repair of the utility model.
Fig. 2 is the structural schematic diagram of the balance pressure generating unit of oil-immersed transformer not oil extraction apparatus for examination and repair.
Fig. 3 is the structural schematic diagram of the balance pressure sensing cell of oil-immersed transformer not oil extraction apparatus for examination and repair.
Specific implementation mode
The utility model is further described With reference to embodiment.Wherein, being given for example only property of attached drawing
Illustrate, expression is only schematic diagram rather than pictorial diagram, should not be understood as the limitation to this patent；In order to which this reality is better described
With novel embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To ability
For field technique personnel, the omitting of some known structures and their instructions in the attached drawings are understandable.
The same or similar label correspond to the same or similar components in the attached drawing of the utility model embodiment；In this practicality
In novel description, it is to be understood that if there is the orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right" to be
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore retouched in attached drawing
The term for stating position relationship only for illustration, should not be understood as the limitation to this patent, for the common skill of this field
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
Embodiment 1
It is as shown in Figure 1 to Figure 3 the first embodiment of the oil-immersed transformer not oil extraction apparatus for examination and repair of the utility model, becomes
The top of the ontology fuel tank 1 of depressor is communicated with installation for transformer 2, and bottom is equipped with draining valve 11, and top is equipped with pressure relief valve 12；
Ontology fuel tank 1 is connected with radiator 13 and the bushing 14 for anchor leg, and 13 tops of radiator are equipped with air bleeding valve
15, it is equipped between bushing 14 and ontology fuel tank 1 and increases seat 16；Installation for transformer 2 includes capsule 21, oil conservater 22 and dehydrating breather
Connecting leg 23, capsule 21 are set in oil conservater 22, and dehydrating breather connecting leg 23 is communicated on capsule 21；Apparatus for examination and repair includes becoming for adjusting
Balance pressure generating unit 3 of the air pressure to balance pressure and the balance pressure for showing transformer oil level height in depressor conservator
Power detection unit 4, balance pressure generating unit 3 are connected to the end of dehydrating breather connecting leg 23, balance pressure sensing cell 4 and oil extraction
Valve 11 connects.But balance pressure sensing cell 4 be not limited to connect with draining valve 11, can also with conservator oil extraction/fuel feeding valve, very
To the various valves for being gas and its collector box vent valve etc. and being connect with transformer body.
As shown in Figure 1 and Figure 2, balance pressure generating unit 3 includes vacuum pump 31, first pipe connector 32 and holding valve
Door 33, first pipe connector 32 is connect with dehydrating breather connecting leg 23, and vacuum pump 31 is connect with first pipe connector 32 by connecting leg 34,
The holding valve 33 for keeping air pressure in installation for transformer is connected on connecting leg 34；In use, using vacuum pump to transformer
Conservator, which carries out being pumped to gas pressure in installation for transformer, reaches balance pressure, closes keep valve 33 at this time, keep transformer
Gas pressure in conservator 2 keeps stablizing.In addition, being also associated with the vacuum meter of negative pressure value in monitoring installation for transformer on connecting leg 34
35, in installation for transformer 2 negative pressure value is monitored in real time；It is also associated on connecting leg 34 for the make-up gas into installation for transformer
Tonifying Qi valve 36 can refill sky when the pumping of vacuum pump 31 makes that gas pressure is too low in installation for transformer 2 by tonifying Qi valve 36
The gases such as gas or nitrogen reduce the gas negative pressure value in installation for transformer 2；Vacuum pump 31 is electrically connected with for electric installation, for Denso
It sets including accumulator, AC power and onboard charger.Selection for electric installation is extensive, simply easily takes, applied widely.
As shown in Figure 1, Figure 3, balance pressure sensing cell 4 includes second pipe connector 41 and transparent pipe 42, the second pipe
Road connector 41 is connect with draining valve 11, and one end of transparent pipe 42 is connect with second pipe connector 41, and the other end is communicated with air, thoroughly
Bright pipe 42 is connected by second pipe connector 41 with installation for transformer 2, transformer oil, detects the transformation balanced with atmospheric pressure
The height of device oil level.Wherein, transparent pipe 42 includes transparent hose and transparent glass tube, and the present embodiment can make in specific application
Other it can measure with the various transparent thin tubes such as transparent hose, transparent glass tube or combination or accurately setting for gas and oil equilibration position
It is standby.In addition, transparent pipe 42 is equipped with for controlling the control valve 43 contacted between transparent pipe and transformer oil, convenient for connecting,
Block contacting for oil pipe and inside transformer transformer oil, easy access operation.
The specific implementation mode of the present embodiment is as follows：
S1. first pipe connector is connect with dehydrating breather connecting leg, by the valve being connect with inside transformer transformer oil and
Second pipe connector connects, and the valve includes draining valve, conservator row/fuel feeding valve and gas and its collector box vent valve；；
S2. start vacuum pump to be evacuated installation for transformer, formed at transformer Awaiting Overhaul attachment and flattened with air
Weigh oil pressure, and the transformer accessory includes the various attachmentes such as air bleeding valve of bushing, pressure relief valve and radiator；
S3. the transformer oil level height equal with atmospheric pressure is observed by transparent pipe, when the transformer equal with atmospheric pressure
When level height is slightly less than the installation site of the transformer accessory of Awaiting Overhaul, stops pumping, and close holding valve, make transformer
Air pressure keeps stablizing in conservator；
S4. dismounting maintenance is carried out to the transformer accessory of Awaiting Overhaul and leaks oil processing, after maintenance, to through maintenance
Transformer accessory be exhausted.
Wherein, vacuum pump 31 includes external vacuum meter, can during being evacuated to installation for transformer in step S2
Monitor the negative pressure value in installation for transformer in real time by external vacuum meter.Vacuum pump negative pressure value reach presetting negative pressure value when from
Dynamic circuit breaker electricity avoids the variation of oil level in moment concern transparent pipe in vacuum.
By above step, the utility model can realize that the mode of not oil extraction carries out transformer accessory dismounting maintenance and oozes
Oil leak is handled, the risk for avoiding additional work, transformer oil that transformer oil extraction brings from being contaminated, to reduce workload,
Shorten the construction time.
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
It is exhaustive.All any modification, equivalent and improvement made within the spirit and principle of the present invention etc., should be included in
Within the protection domain of the utility model claims.
Claims (8)
1. a kind of oil-immersed transformer not oil extraction apparatus for examination and repair, the oil-immersed transformer include ontology fuel tank, installation for transformer,
Radiator and bushing for anchor leg are marked with transformer oil in the ontology fuel tank, and the bottom of ontology fuel tank is set
There are draining valve, top to be equipped with pressure relief valve；The radiator is set to the side of the ontology fuel tank, and the top of radiator is equipped with
Air bleeding valve；The bushing is set to the top of ontology fuel tank, is equipped between bushing and ontology fuel tank and increases seat；The change
Depressor conservator is set to the top of the ontology fuel tank, and installation for transformer includes capsule, oil conservater and dehydrating breather connecting leg, the capsule
In the oil conservater, dehydrating breather connecting leg is communicated on the capsule；It is characterized in that, the apparatus for examination and repair includes for adjusting
Air pressure is to the balance pressure generating unit of balance pressure and for show ontology fuel tank and atmospheric pressure phase in whole installation for transformer
Etc. level heights balance pressure sensing cell, the balance pressure generating unit is connected to the end of the dehydrating breather connecting leg,
The balance pressure sensing cell is connect with draining valve.
2. oil-immersed transformer not oil extraction apparatus for examination and repair according to claim 1, which is characterized in that the balance pressure production
Raw unit includes vacuum pump, first pipe connector and valve, the first pipe connector is kept to be connect with dehydrating breather connecting leg, institute
It states vacuum pump to connect by connecting leg with first pipe connector, be connected on the connecting leg for keeping air pressure in installation for transformer
Keep valve.
3. oil-immersed transformer not oil extraction apparatus for examination and repair according to claim 2, which is characterized in that also connect on the connecting leg
It is connected to the vacuum meter of negative pressure value in monitoring installation for transformer.
4. oil-immersed transformer not oil extraction apparatus for examination and repair according to claim 2, which is characterized in that also connect on the connecting leg
It is connected to the tonifying Qi valve for the make-up gas into installation for transformer.
5. according to claim 2 to 4 any one of them oil-immersed transformer not oil extraction apparatus for examination and repair, which is characterized in that described
Vacuum pump is electrically connected with for electric installation, and described for electric installation includes accumulator, AC power and onboard charger.
6. oil-immersed transformer not oil extraction apparatus for examination and repair according to claim 1, which is characterized in that the balance pressure inspection
It includes second pipe connector and transparent pipe to survey unit, and the second pipe connector is connect with draining valve, and the one of the transparent pipe
End is connect with second pipe connector, and the other end is communicated with air.
7. oil-immersed transformer not oil extraction apparatus for examination and repair according to claim 6, which is characterized in that set on the transparent pipe
It is useful for the control valve contacted between control transparent pipe and transformer oil.
8. the oil-immersed transformer not oil extraction apparatus for examination and repair described according to claim 6 or 7, which is characterized in that the transparent pipe
Including transparent hose and transparent glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820301131.7U CN207868022U (en) | 2018-03-05 | 2018-03-05 | A kind of oil-immersed transformer not oil extraction apparatus for examination and repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820301131.7U CN207868022U (en) | 2018-03-05 | 2018-03-05 | A kind of oil-immersed transformer not oil extraction apparatus for examination and repair |
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| Publication Number | Publication Date |
|---|---|
| CN207868022U true CN207868022U (en) | 2018-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820301131.7U Active CN207868022U (en) | 2018-03-05 | 2018-03-05 | A kind of oil-immersed transformer not oil extraction apparatus for examination and repair |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630400A (en) * | 2018-03-05 | 2018-10-09 | 广东电网有限责任公司佛山供电局 | A kind of oil-immersed transformer balance pressure apparatus for examination and repair and method |
| CN110517848A (en) * | 2019-08-26 | 2019-11-29 | 国网福建省电力有限公司邵武市供电公司 | A kind of main transformer band oil replacement interface flange gasket set |
| CN110517847A (en) * | 2019-08-26 | 2019-11-29 | 国网福建省电力有限公司邵武市供电公司 | A kind of main transformer band oil replacement interface flange gasket set and its method |
| CN112816140A (en) * | 2020-12-31 | 2021-05-18 | 国网湖南省电力有限公司 | Device and method for field detection of oil leakage performance of high-voltage bushing of transformer |
-
2018
- 2018-03-05 CN CN201820301131.7U patent/CN207868022U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630400A (en) * | 2018-03-05 | 2018-10-09 | 广东电网有限责任公司佛山供电局 | A kind of oil-immersed transformer balance pressure apparatus for examination and repair and method |
| CN110517848A (en) * | 2019-08-26 | 2019-11-29 | 国网福建省电力有限公司邵武市供电公司 | A kind of main transformer band oil replacement interface flange gasket set |
| CN110517847A (en) * | 2019-08-26 | 2019-11-29 | 国网福建省电力有限公司邵武市供电公司 | A kind of main transformer band oil replacement interface flange gasket set and its method |
| CN112816140A (en) * | 2020-12-31 | 2021-05-18 | 国网湖南省电力有限公司 | Device and method for field detection of oil leakage performance of high-voltage bushing of transformer |
| CN112816140B (en) * | 2020-12-31 | 2023-08-15 | 国网湖南省电力有限公司 | Device and method for on-site detection of oil seepage performance of high-voltage bushing of transformer |
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