CN107845486A - Fire-type oil-immersed power transformer - Google Patents
Fire-type oil-immersed power transformer Download PDFInfo
- Publication number
- CN107845486A CN107845486A CN201711185673.9A CN201711185673A CN107845486A CN 107845486 A CN107845486 A CN 107845486A CN 201711185673 A CN201711185673 A CN 201711185673A CN 107845486 A CN107845486 A CN 107845486A
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- China
- Prior art keywords
- oil
- fuel tank
- pressure
- fire
- power transformer
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a kind of fire-type oil-immersed power transformer, the transformer includes：Fuel tank, it can be opened and closed to be connected to the case lid of fuel tank and pressure-regulating device；Wherein, fuel tank is used to store esters insulating oil；The pressure that pressure-regulating device is used in regulating oil tank, and the esters insulating oil sprayed for the pressure in regulating oil tank is isolated with naked light.In the present invention, by the way that fire retardant esters insulating oil is replaced into existing mineral insulating oil, it is effectively improved the fire protecting performance of transformer, reduce inflammable and explosive risk, and, esters insulating oil is renewable, it is degradable, environmental-protecting performance is excellent, simultaneously, pressure-regulating device can be isolated the esters insulating oil of ejection with naked light while regulating oil tank pressure, the esters insulating oil that efficiently avoid ejection is contacted and exploded with naked light, further increase the fire protecting performance of transformer, surrounding devices and the safety of personnel are ensured, with good social effect and economic benefit.
Description
Technical field
The present invention relates to transformer technology field, in particular to a kind of fire-type oil-immersed power transformer.
Background technology
Transformer is the device for changing alternating voltage using the principle of electromagnetic induction.The species of transformer is more, according to
The type of cooling is classified, and transformer can be divided into dry-type transformer and oil-filled transformer.Wherein, asphalt mixtures modified by epoxy resin in dry-type transformer
Fat dry-type transformer, which belongs to, thwarts type transformer, is not easy to catch fire, and is limited to even if prolonging combustion after catching fire in certain limit, and have
There is preferable self-extinguishment function.But epoxy resin dry type transformer is expensive, it is difficult to degrade after scrapping, environmental-protecting performance is poor.
Therefore, transformer used in current electric grid and industrial and mining enterprises is mostly oil-filled transformer, and oil-filled transformer filling is
Mineral insulating oil, it is cheap for dry-type transformer.But the flash-point of mineral insulating oil is about 140 DEG C, is belonged to
Flammable liquid, the risk caught fire or even exploded be present, high risks easily are brought to surrounding devices, building and personnel, caused
Severe social influence and heavy economic losses.
The content of the invention
In consideration of it, the present invention proposes a kind of fire-type oil-immersed power transformer, it is intended to solves oil immersion in the prior art
The problem of formula transformer is inflammable and explosive.
The present invention proposes a kind of fire-type oil-immersed power transformer, and the transformer includes：Fuel tank, it can be opened and closed to connect
In the case lid and pressure-regulating device of fuel tank；Wherein, fuel tank is used to store esters insulating oil；Pressure-regulating device is used to adjust
Pressure in oil tank, and the esters insulating oil sprayed for the pressure in regulating oil tank is isolated with naked light.
Further, in above-mentioned fire-type oil-immersed power transformer, fuel tank is used to store the esters with default flash-point
Insulating oil.
Further, in above-mentioned fire-type oil-immersed power transformer, pressure-regulating device includes：Pressure relief device,
Oil guide pipe and oil catcher；Wherein, case lid offers perforate, and pressure relief device is connected to case lid, also, pressure relief device
Entrance is corresponding with perforate, and the jet of pressure relief device is connected by oil guide pipe with the entrance of oil catcher, oil catcher with
Fuel tank has pre-determined distance.
Further, in above-mentioned fire-type oil-immersed power transformer, side wall of the oil catcher close to top offers exhaust
Hole.
Further, in above-mentioned fire-type oil-immersed power transformer, perforate is two, and pressure relief device is two,
Two pressure relief devices are all connected to case lid, also, the entrance of two pressure relief devices respectively with a pair of two perforates 1
Should；One of pressure relief device is connected by oil guide pipe with oil catcher, and another pressure relief device passes through Oil Guide branch
Pipe is connected with oil guide pipe.
Further, in above-mentioned fire-type oil-immersed power transformer, oil catcher has preset vol.
Further, in above-mentioned fire-type oil-immersed power transformer, the volume of oil catcher is fuel tank lactone insulating oil
The 10%~20% of volume.
Further, in above-mentioned fire-type oil-immersed power transformer, the position of oil catcher bottom is less than tank bottoms
Position；Or the position of oil catcher bottom and the position of tank bottoms are in same horizontal line.
Further, in above-mentioned fire-type oil-immersed power transformer, fuel tank has default mechanical strength.
Further, in above-mentioned fire-type oil-immersed power transformer, the wall thickness of fuel tank has preset thickness；And/or oil
The reinforcing mechanisms for being strengthened fuel tank are provided with case, so that fuel tank has default mechanical strength.
In the present invention, the fire retardant esters insulating oil of fuel tank memory storage is exhausted by the way that esters insulating oil is replaced into existing mineral
Edge oil, is effectively improved the fire protecting performance of transformer, reduces inflammable and explosive risk, also, esters insulating oil it is renewable,
Degradable, environmental-protecting performance is excellent, meanwhile, pressure-regulating device can insulate the esters of ejection while regulating oil tank pressure
Oil is isolated with naked light, and the esters insulating oil that efficiently avoid ejection is contacted and exploded with naked light, is further improved
The fire protecting performance of transformer, solves the problems, such as that oil-filled transformer is inflammable and explosive in the prior art, has ensured surrounding devices
And the safety of personnel, there is good social effect and economic benefit.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the structural representation of fire-type oil-immersed power transformer provided in an embodiment of the present invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Referring to Fig. 1, Fig. 1 is the structural representation of fire-type oil-immersed power transformer provided in an embodiment of the present invention.Such as
Shown in figure, fire-type oil-immersed power transformer includes：Fuel tank 1, case lid 2 and pressure-regulating device 3.Wherein, case lid 2 and fuel tank
1 is that can be opened and closed to connect.Fuel tank 1 is used to store esters insulating oil, and transformer core and winding are immersed in esters insulating oil.Tool
Body, fuel tank 1 stores the esters insulating oil with default flash-point, and the default flash-point is the high-flash esters insulation higher than 250 DEG C
Oil.Preferably, the esters insulating oil is natural esters insulating oil or synthetic ester insulating oil, and both esters insulating oil flash points are equal
More than 250 DEG C, for especially natural esters insulating oil flash point more than 300 DEG C, burning-point is higher than 360 DEG C, has fire retardant, self-extinguishment function,
Belong to K level fire resistant oils.It is more highly preferred to, the memory storage natural esters insulating oil of fuel tank 1 is nonflammable explosive, even if natural esters insulating oil
Leakage, the fire retardant and self-extinguishment function of natural esters insulating oil can also be effectively prevented from exploding, and improve the fire line of transformer
Can, also, natural esters insulating oil is renewable, degradable, and environmental-protecting performance is excellent.
When it is implemented, fire-type oil-immersed power transformer can be 35kV and following voltage class, 6300kVA and with
The oil-filled transformer of lower capacity.It is of course also possible to be the oil-filled transformer of other models, this is not appointed in the present embodiment
What is limited.In the present embodiment, the rated voltage of transformer is 35kV, rated capacity 4000kVA.Perfusion flash-point in fuel tank 1
328 DEG C, the natural esters insulating oil of 356 DEG C of burning-point, natural esters insulating oil gross weight 2530kg.
It should be appreciated by those skilled in the art that oil-immersed power transformer also includes other structures, then the present embodiment
In fire-type oil-immersed power transformer in addition to including said structure, in addition to other oil-immersed power transformers must
The structure that must possess, the present embodiment will not be repeated here.
The pressure that pressure-regulating device 3 is used in regulating oil tank 1, and will be sprayed for the pressure in regulating oil tank 1
Esters insulating oil is isolated with naked light.When transformer expanded by heating or transformer break down, the pressure inside fuel tank 1
Rise, it is of course also possible to cause the pressure rise inside fuel tank 1 for other reasonses, at this moment, the regulating oil tank 1 of pressure-regulating device 3
Interior pressure, so that the pressure of fuel tank 1 reduces.Specifically pressure-regulating device 3 is insulated by discharging the inside points esters of fuel tank 1
The pressure that oil comes in regulating oil tank 1, that is, the purpose of pressure release is played, in order to avoid the esters insulating oil of discharge contacts with naked light and sent out
Raw blast, then pressure-regulating device 3 is additionally operable to the esters insulating oil of discharge being isolated with naked light.
As can be seen that in the present embodiment, the fire retardant esters insulating oil of the memory storage of fuel tank 1, by the way that esters insulating oil is replaced
Existing mineral insulating oil, the fire protecting performance of transformer is effectively improved, reduces inflammable and explosive risk, also, esters
Insulating oil is renewable, degradable, and environmental-protecting performance is excellent, meanwhile, pressure-regulating device 3 can while 1 pressure of regulating oil tank
The esters insulating oil of ejection is isolated with naked light, the esters insulating oil that efficiently avoid ejection is contacted and occurred with naked light
Blast, further increases the fire protecting performance of transformer, solves the problems, such as that oil-filled transformer is inflammable and explosive in the prior art,
Surrounding devices and the safety of personnel have been ensured, there is good social effect and economic benefit.
With continued reference to Fig. 1, in above-described embodiment, pressure-regulating device 3 can include：Pressure relief device 31, oil guide pipe
32 and oil catcher 33.Wherein, case lid 2 offers perforate, and pressure relief device 31 is connected with case lid 2, also, pressure release dress
Put 31 entrance it is corresponding with perforate.Specifically, the optional position that the perforate can be placed on case lid 2.Preferably, the perforate is leaned on
Nearly low-pressure side opens up, safer away from high-pressure side.When it is implemented, the perforate is opened at the low-pressure side left corner of fuel tank 1.Pressure
Power release device 31 is connected with the case lid 2 of tapping.When it is implemented, pressure relief device 31 can be pressure relief valve.
The jet of pressure relief device 31 is connected by oil guide pipe 32 with the entrance of oil catcher 33, specifically, Oil Guide
The first end of pipe 32 is connected with the jet of pressure relief device 31, and the second end of oil guide pipe 32 is connected with the entrance of oil catcher 33
Connect.Oil catcher 33 is hollow body, and oil catcher 33 is used to store the esters insulating oil sprayed out of fuel tank 1, so that the ester sprayed
Class insulating oil is isolated with naked light, is avoided esters insulating oil and is contacted and explode with naked light.
When it is implemented, oil catcher 33 can be cylindrical vessel or square container.In the present embodiment, oil catcher 33
For cylindrical vessel.Oil catcher 33 can be made of stainless steel, and the thickness of oil catcher 33 is 3mm.Certainly, oil catcher 33
Material and thickness can also determine that the present embodiment does not do any restrictions to this according to actual conditions.
When it is implemented, oil guide pipe 32 can be with cylindrical, then oil guide pipe 32 has preset diameters, and the preset diameters are more than
Equal to 10cm.When it is implemented, the preset diameters can determine that the present embodiment does not do any limit to this according to actual conditions
System.In the present embodiment, a diameter of 10cm of oil guide pipe 32.Oil guide pipe 32 can be made of stainless steel, certainly, also may be used
To determine the material of oil guide pipe 32 according to actual conditions, the present embodiment does not do any restrictions to this.When it is implemented, oil guide pipe
32 right-angle bending must not occur, to avoid influenceing the flow velocity for the esters insulating oil that fuel tank 1 sprays.
Oil catcher 33 has preset vol, so that oil catcher 33 can preferably accommodate the esters insulating oil of the ejection of fuel tank 1.
When it is implemented, the preset vol can determine according to the volume of the lactone insulating oil of fuel tank 1.Preferably, oil catcher 33
Volume is the 10%~20% of the lactone of fuel tank 1 insulation oil volume, is more highly preferred to, the volume of oil catcher 33 is the lactone of fuel tank 1
The 14% of class insulation oil volume.In the present embodiment, the volume of oil catcher 33 is 390L, a diameter of 1m of oil catcher 33, height
For 0.5m.
Oil catcher 33 has pre-determined distance with fuel tank 1, so that oil catcher 33 is effectively guaranteed oil catcher away from fuel tank 1
33 and the safety of fuel tank 1, reduce the probability to explode.Preferably, the pre-determined distance is to be set more than or equal to 3m, i.e. oil catcher 33
The place being placed in beyond fuel tank 3m.In the present embodiment, oil catcher 33 is arranged at the position at fuel tank 4m.
The position of the bottom of oil catcher 33 (bottom shown in Fig. 1) is less than the position of the bottom of fuel tank 1 (bottom shown in Fig. 1),
Or the position of the position of the bottom of oil catcher 33 and the bottom of fuel tank 1 is in same horizontal line, so that the esters sprayed in fuel tank 1
Insulating oil is preferably delivered in oil catcher 33.
As can be seen that in the present embodiment, pressure-regulating device 3 being capable of effectively regulating oil tank by pressure relief device 31
Pressure in 1, correctly acted when ensure that 1 internal pressure exception of fuel tank, also, pressure relief device 31 is exhausted by the esters of ejection
Edge oil is delivered in oil catcher 33 by oil guide pipe 32, has not only acted as the effect of pressure release, and oil catcher 33 insulate esters
Oil is collected, avoid pressure in fuel tank 1 it is excessive cause to rupture and then cause fire fire, it is thus also avoided that esters insulating oil is straight
Connect esters insulating oil caused by being ejected to the outside of fuel tank 1 to contact and explode with naked light, realize the esters insulating oil of ejection
With isolating for air and naked light, the fire protecting performance of transformer is effectively improved.
In above-described embodiment, the side wall at the close top (top shown in Fig. 1) of oil catcher 33 offers steam vent 331.
When the pressure rise in fuel tank 1, the part esters insulating oil in fuel tank 1 is sprayed via oil guide pipe by pressure relief device 31
32 are delivered in oil catcher 33, the speed of the esters insulating oil at this moment sprayed, if oil catcher 33 does not open up steam vent 331,
Feeling suffocated inside oil catcher 33 is easily caused, prevents the esters insulating oil of ejection to be delivered in oil catcher 33, so steam vent
The 331 esters insulating oil for enabling to spray that opens up preferably is delivered in oil catcher 33 so that oil catcher 33 is preferably received
Receive esters insulating oil.
In the present embodiment, the top of oil catcher 33 is provided with lid, in the side wall of the oil catcher 33 at lid 2cm
On open up steam vent 331, a diameter of 10cm of the steam vent 331.
In the various embodiments described above, case lid 2 offers two perforates, and pressure relief device 31 can be two, two pressure
Release device 31 is connected with case lid 2, also, the entrance of two pressure relief devices 31 respectively with a pair of two perforates 1
Should.Specifically, the entrance of one of pressure relief device 31 is corresponding with one of perforate, another pressure relief device
31 entrance is corresponding with another perforate, and two pressure relief devices 31 are connected with the case lid 2 of corresponding tapping respectively.
Preferably, two perforates are close to low-pressure side and opened up.
One of pressure relief device 31 is connected by oil guide pipe 32 with oil catcher 33, another pressure relief device
31 are connected by Oil Guide branch pipe with oil guide pipe 32, and the esters insulating oil of the jet of pressure relief device 31 output passes through Oil Guide
Branch pipe is delivered in oil guide pipe 32, and then is delivered in oil catcher 33.
When it is implemented, two pressure relief devices 31 can be operated simultaneously, i.e., the esters insulation sprayed in fuel tank 1
Oil can be delivered to oil catcher 33 by two pressure relief devices 31 respectively.
As can be seen that in the present embodiment, by setting two pressure relief devices 31, can effectively ensure in fuel tank 1
The ejection of part esters insulating oil, the effectively pressure in regulating oil tank 1, two pressure relief devices 31 are standby each other, ensure
The reliability of the pressure release of transformer, improve transformer pressure release in case of a fault, oil extraction effect, further lifting
The fire protecting performance of transformer.
In the various embodiments described above, fuel tank 1 has default mechanical strength.Specifically, the default mechanical strength can be according to reality
Border situation determines that the present embodiment does not do any restrictions to this.
When it is implemented, to 35kV natural esters Insulation Oil Transformers：The transformer of general structure fuel tank should bear 85kPa's
Test pressure；The transformer of corrugated fuel tank (including with spring-piece type radiator fuel tank), 315kVA and following person, test pressure
For 35kPa, 400kVA and above person, test pressure 30kPa, after 5min answer it is lossless injure should not occur not allowing it is permanent
Deformation；Hermetically sealed type transformer of the fuel tank internal filled with gas, test pressure is 85kPa (except corrugated fuel tank), after 5min
Answer the lossless permanent deformation for injuring and should not occurring not allowing.In the present embodiment, for 35kV, 4000kV oil-filled transformer
Fuel tank can bear 85kPa test pressures.
In order to ensure fuel tank 1 there is default mechanical strength, then the wall thickness of fuel tank 1 has preset thickness, and/or, fuel tank 1
Inside it is provided with the reinforcing mechanisms for being strengthened fuel tank 1.Specifically, the wall thickness that can be only fuel tank 1 has default thickness
Degree presets mechanical strength so that fuel tank 1 has, and can also be only to be provided with to add for strengthen fuel tank 1 in fuel tank 1
So that fuel tank 1 has default mechanical strength, can also be the wall thickness of not only fuel tank 1 has preset thickness and fuel tank 1 for strong mechanism
Inside it is provided with the reinforcing mechanisms for being strengthened fuel tank 1.
When it is implemented, the preset thickness can determine that the present embodiment does not do any restrictions to this according to actual conditions.
Preferably, reinforcing mechanisms can be the reinforcement set on the skeleton of fuel tank 1.
When it is implemented, the release pressure limit of pressure relief device 31 is lower 10kPa than the test pressure value of fuel tank 1.
In the present embodiment, for the fuel tank of 35kV, 4000kV oil-filled transformer, the release pressure limit of pressure relief device 31 is
75kPa。
As can be seen that in the present embodiment, there is default mechanical strength by fuel tank 1, transformer can be effectively improved
Fire protecting performance.
In summary, the present embodiment is effectively improved change by the way that esters insulating oil is replaced into existing mineral insulating oil
The fire protecting performance of depressor, inflammable and explosive risk is reduced, also, esters insulating oil is renewable, degradable, and environmental-protecting performance is excellent
It is different, meanwhile, pressure-regulating device 3 the esters insulating oil of ejection and naked light can be carried out while 1 pressure of regulating oil tank every
From the esters insulating oil that efficiently avoid ejection is contacted and exploded with naked light, further increases the fire prevention of transformer
Performance, surrounding devices and the safety of personnel are ensured, there is good social effect and economic benefit.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
- A kind of 1. fire-type oil-immersed power transformer, it is characterised in that including：Fuel tank (1), it can be opened and closed to be connected to the oil The case lid (2) and pressure-regulating device (3) of case (1)；Wherein,The fuel tank (1) is used to store esters insulating oil；The pressure-regulating device (3) is used to adjust the pressure in the fuel tank (1), and will be interior in order to adjust the fuel tank (1) Pressure and the esters insulating oil that sprays isolated with naked light.
- 2. fire-type oil-immersed power transformer according to claim 1, it is characterised in thatThe fuel tank (1) is used to store the esters insulating oil with default flash-point.
- 3. fire-type oil-immersed power transformer according to claim 1, it is characterised in that the pressure-regulating device (3) include：Pressure relief device (31), oil guide pipe (32) and oil catcher (33)；Wherein,The case lid (2) offers perforate, and the pressure relief device (31) is connected to the case lid (2), also, the pressure The entrance of release device (31) is corresponding with the perforate, and the jet of the pressure relief device (31) passes through the oil guide pipe (32) entrance with the oil catcher (33) is connected, and the oil catcher (33) has pre-determined distance with the fuel tank (1).
- 4. fire-type oil-immersed power transformer according to claim 3, it is characterised in that the oil catcher (33) is close The side wall at top offers steam vent (331).
- 5. fire-type oil-immersed power transformer according to claim 3, it is characterised in thatThe perforate is two, and the pressure relief device (31) is two, and two pressure relief devices (31) are all connected with In the case lid (2), also, the entrance of two pressure relief devices (31) corresponds with two perforates respectively；One of them described pressure relief device (31) is connected by the oil guide pipe (32) with the oil catcher (33), another The individual pressure relief device (31) is connected by Oil Guide branch pipe with the oil guide pipe (32).
- 6. fire-type oil-immersed power transformer according to claim 3, it is characterised in that the oil catcher (33) has Preset vol.
- 7. fire-type oil-immersed power transformer according to claim 6, it is characterised in that the body of the oil catcher (33) Product is the 10%~20% of the fuel tank (1) lactone insulation oil volume.
- 8. fire-type oil-immersed power transformer according to claim 3, it is characterised in thatThe position of oil catcher (33) bottom is less than the position of the fuel tank (1) bottom；OrThe position of oil catcher (33) bottom is in same horizontal line with the position of the fuel tank (1) bottom.
- 9. fire-type oil-immersed power transformer according to claim 1, it is characterised in that the fuel tank (1) has pre- If mechanical strength.
- 10. fire-type oil-immersed power transformer according to claim 9, it is characterised in thatThe wall thickness of the fuel tank (1) has preset thickness；And/orThe reinforcing mechanisms for being strengthened the fuel tank (1) are provided with the fuel tank (1), so that the fuel tank has in advance If mechanical strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711185673.9A CN107845486A (en) | 2017-11-23 | 2017-11-23 | Fire-type oil-immersed power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711185673.9A CN107845486A (en) | 2017-11-23 | 2017-11-23 | Fire-type oil-immersed power transformer |
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| Publication Number | Publication Date |
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| CN107845486A true CN107845486A (en) | 2018-03-27 |
Family
ID=61679245
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711185673.9A Pending CN107845486A (en) | 2017-11-23 | 2017-11-23 | Fire-type oil-immersed power transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637779A (en) * | 2019-01-14 | 2019-04-16 | 中车株洲电机有限公司 | A kind of oil immersed type traction trans former and its oil liquid recyclable device |
| CN111933408A (en) * | 2020-07-24 | 2020-11-13 | 清华大学 | Oil-immersed transformer that leakproofness is good |
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| CN201562530U (en) * | 2009-11-05 | 2010-08-25 | 保定天威集团有限公司 | Large-size oil tank anti-explosion pressure releasing device for oil immersed type power transformer and reactor |
| CN204463977U (en) * | 2015-01-28 | 2015-07-08 | 保定博为世能电气有限公司 | A kind of transformer anti-explosion protective device |
| CN106635246A (en) * | 2016-12-12 | 2017-05-10 | 国网河南省电力公司电力科学研究院 | High-overload transformer oil and preparation process thereof |
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2017
- 2017-11-23 CN CN201711185673.9A patent/CN107845486A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201562530U (en) * | 2009-11-05 | 2010-08-25 | 保定天威集团有限公司 | Large-size oil tank anti-explosion pressure releasing device for oil immersed type power transformer and reactor |
| CN204463977U (en) * | 2015-01-28 | 2015-07-08 | 保定博为世能电气有限公司 | A kind of transformer anti-explosion protective device |
| CN106635246A (en) * | 2016-12-12 | 2017-05-10 | 国网河南省电力公司电力科学研究院 | High-overload transformer oil and preparation process thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637779A (en) * | 2019-01-14 | 2019-04-16 | 中车株洲电机有限公司 | A kind of oil immersed type traction trans former and its oil liquid recyclable device |
| CN111933408A (en) * | 2020-07-24 | 2020-11-13 | 清华大学 | Oil-immersed transformer that leakproofness is good |
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Application publication date: 20180327 |