CN208706384U - A kind of oil-immersed transformer - Google Patents
A kind of oil-immersed transformer Download PDFInfo
- Publication number
- CN208706384U CN208706384U CN201821325178.3U CN201821325178U CN208706384U CN 208706384 U CN208706384 U CN 208706384U CN 201821325178 U CN201821325178 U CN 201821325178U CN 208706384 U CN208706384 U CN 208706384U
- Authority
- CN
- China
- Prior art keywords
- coil
- oil
- immersed transformer
- fuel tank
- iron core
- 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.)
- Active
Links
Landscapes
- Housings And Mounting Of Transformers (AREA)
- Transformer Cooling (AREA)
Abstract
The utility model relates to technical field of transformer equipment, and in particular to a kind of oil-immersed transformer.The oil-immersed transformer includes: fuel tank, iron core and coil windings, and coil windings are wound around on the stem of iron core, and iron core and coil windings are all set in fuel tank, and filled with specified dielectric in fuel tank, specified dielectric is for insulating and cooling down coil windings；Coil windings include first coil and the second coil, and less than the received voltage of the second coil institute, first coil and the second coil are wound around on iron core the received voltage of first coil institute with one heart；The first cooling oil duct is formed in first coil, the width range of the first cooling oil duct is 3.5mm~4.5mm；The second cooling oil duct is formed in second coil, the width range of the second cooling oil duct is 3.5mm~4.5mm.The dielectric can effectively extend the service life of transformer, be easy degradation, fire savety is good, and is renewable resource.Meanwhile the size for increasing cooling oil duct improves the heat dissipation performance of the oil-immersed transformer.
Description
[technical field]
The utility model relates to technical field of transformer equipment, and in particular to a kind of oil-immersed transformer.
[background technique]
In power transmission and transformation line, in order to reduce the loss of electric energy, need to carry out the change of voltage using transformer, therefore become
Depressor is an important electrical equipment, and transformer is also the important pivot equipment in electric system, the increasing for the capacity that transmits electric power
Greatly, it is necessary to which the transformer of high voltage, large capacity, transformer can generate a large amount of heat, especially coil during the work time
The phenomenon that being easy to appear temperature rise overheat, longtime running easily makes insulation ag(e)ing, influences the service life of transformer.
Currently, oil-immersed transformer in order to radiate, is mainly immersed in dielectric by coil and iron core, and
Form cooling oil duct in coil, flowed in cooling oil duct by dielectric and take away heat caused by transformer, with into
Row heat dissipation.The dielectric that oil-immersed transformer mainly uses is mineral oil product, according to the characteristic of mineral oil, the cooling of transformer
The width of oil duct is probably 2.5mm~3.5mm.But mineral oil derives from oil product, and not degradable, fire savety is poor, the longevity
It orders short, and belongs to non-renewable resources.
In consideration of it, overcoming the shortcomings of is the art urgent problem to be solved present in the prior art product.
[utility model content]
Technical problem to be solved by the utility model is: the dielectric that oil-immersed transformer mainly uses at present is mineral oil
Product, but mineral oil derives from oil product, and not degradable, fire savety is poor, and the service life is short, and belongs to non-renewable resources.
The utility model is to reach above-mentioned purpose by following technical solution:
First aspect the utility model provides a kind of oil-immersed transformer, and the oil-immersed transformer includes: fuel tank, iron
Core 1 and coil windings 2, the coil windings 2 are wound around on the stem 11 of the iron core 1, the iron core 1 and the coil
Winding 2 is all set in the fuel tank, and filled with specified dielectric in the fuel tank, the dielectric is for insulating and cooling down institute
State coil windings 2；The coil windings 2 include first coil 21 and the second coil 22, the 21 received electricity of institute of first coil
Pressure is less than the 22 received voltage of institute of the second coil, and the first coil 21 and second coil 22 are wound around described with one heart
On iron core 1；The first cooling oil duct 211 is formed in the first coil 21, the width range of first cooling oil duct 211 is
3.5mm~4.5mm is formed with the second cooling oil duct 221, the width of second cooling oil duct 221 in second coil 22
Range is 3.5mm~4.5mm.
Preferably, for the specified dielectric at 40 degrees Celsius, the kinematic viscosity of the specified dielectric is greater than 34mm2/
S, specific heat are 2.2KJ/ (kg*K), thermal conductivity 0.16w/mK.
Preferably, the first coil 21 is wound around the periphery of the stem 11 of the iron core 1,22 winding of the second coil
In the periphery of the first coil 21.
Preferably, insulation airway 3 is provided between the first coil 21 and second coil 22.
Preferably, insulating paper is provided in the insulation airway 3；The insulating paper is set along the circumferential direction of the first coil 21
It sets to wrap up the first coil 21.
Preferably, the insulating paper is crimped paper, and the number of plies of the crimped paper is one layer or two layers；The crimped paper
With a thickness of 0.3 ± 0.05mm.
Preferably, the iron core 1 goes back upper yoke 12 and lower yoke 13, and the stem 11 is arranged in 12 He of upper yoke
Between the lower yoke 13.
Preferably, it is provided with lead in the coil windings 2, to connect by the lead with external circuit.
Preferably, casing is arranged with outside the lead.
Preferably, temperature measuring device and pressure relief valve, the temperature measuring device are provided at the top of the fuel tank
For measuring the oil temperature in fuel tank；The pressure relief valve is for avoiding the specified dielectric in fuel tank from outflowing.
The beneficial effects of the utility model are: oil-immersed transformer provided by the utility model, which is used, purifies it by gutter oil
The liquid obtained afterwards has specific cooling characteristics as specified dielectric, the specified dielectric.Dielectric is specified according to this
Cooling characteristics, the size of the first, second cooling oil duct of matched design.The oil-immersed transformer has good heat dissipation effect,
The temperature of transformer can be quickly reduced, to reduce temperature-rise effect.Meanwhile the dielectric can effectively extend making for transformer
With the service life, and the dielectric is easy degradation, and fire savety is good, and is renewable resource.
[Detailed description of the invention]
It, below will be in the utility model embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Required attached drawing is briefly described.It should be evident that drawings described below is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of oil-immersed transformer provided by the embodiment of the utility model；
Fig. 2 is a kind of overlooking structure diagram of oil-immersed transformer provided by the embodiment of the utility model；
Fig. 3 is a kind of local overlooking structural schematic diagram signal of oil-immersed transformer provided by the embodiment of the utility model
Figure.
[specific embodiment]
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Term "inner", "outside", " longitudinal direction ", " transverse direction ", "upper", "lower", "top", "bottom" in the description of the present invention,
The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, and being merely for convenience of description, this is practical new
Type rather than require the utility model that must be constructed and operated in a specific orientation, therefore be not construed as to the utility model
Limitation.
As long as in addition, technical characteristic involved in the various embodiments of the present invention described below each other it
Between do not constitute conflict and can be combined with each other.Below just with reference to drawings and examples in conjunction with being described in detail the utility model.
Currently, oil-immersed transformer mainly uses mineral oil as dielectric, but mineral oil is not degradable, fire line compared with
Difference, and mineral oil belongs to non-renewable resources.Transformer using mineral oil as dielectric, not only self performance is unstable,
And ecological environment can be polluted.Inventor is available after purifying to gutter oil by largely testing discovery
A kind of dielectric, the dielectric are easy degradation, have preferable fire savety, and be renewable resource.It will be mentioned by gutter oil
Pure obtained dielectric can be brought as dielectric using in oil-immersed transformer, can be good at solving current mineral oil
The problem of.Meanwhile the specified dielectric can extend the service life of oil-immersed transformer.
But, the cooling characteristics of the dielectric purified by gutter oil and mineral oil different from, therefore, when will be by ground
When the dielectric that ditch oil purifies is applied in oil-immersed transformer, need the cooling characteristics based on dielectric to transformer into
Row improves.Illustrate the structure of the oil-immersed transformer using the dielectric purified by gutter oil below with reference to FIG. 1 to FIG. 3.
Referring to Fig. 1, which includes: fuel tank (not shown), coil windings 2 and iron core 1；Wherein, line
Circle winding 2 and iron core 1 are all set in fuel tank, and the specified dielectric for insulating and cooling down coil windings 2 is filled in fuel tank,
Wherein, which is by prepared by purifying to gutter oil.The specified dielectric has as follows at 40 degrees Celsius
Characteristic: the kinematic viscosity of specified dielectric is greater than 34mm2/ s, specific heat are 2.2KJ/ (kg*K), thermal conductivity 0.16w/mK.
Wherein, dynamic viscosity is the ratio between the dynamic viscosity of fluid and synthermal lower fluid density ρ.Specific heat is also known as specific heat capacity
Amount, refers to the thermal capacity of unit mass substance, even if the absorption or release when unit mass object change unit temperature is interior
Energy.Thermal conductivity is a kind of physical quantity, and value is that the heat of certain material is penetrated in the unit time divided by the temperature between two surface of material
Difference.
Wherein, iron core 1 is the magnetic circuit part of oil-immersed transformer, and when operation will generate magnetic hystersis loss and eddy-current loss and send out
Heat, to reduce heating loss and reducing volume and weight, iron core 1, which generally uses, is less than the high cold rolled grain of 0.35mm magnetic capacity
Grain-oriented Si steel sheet is constituted.
The body (coil windings 2 and iron core 1) of oil immersed type oil-immersed transformer is incorporated into the fuel tank full of dielectric, oil
Case can be welded into steel plate.In practical application scene, the fuel tank of oil-immersed transformer is made of box shell and case lid, and oil immersed type becomes
The body of depressor is placed in box shell, and case lid opening can be hung out body and overhauled.
Specifically, being provided with the accommodating chamber for housing insulation liquid in fuel tank, iron core 1 is set in fuel tank, so as to structure
At the magnetic circuit part of oil-immersed transformer, and then realize the transmitting and transformation of electromagnetic energy.Iron core 1 includes stem 11, upper yoke
12 and lower yoke 13, stem 11 successively stacked together by several silicon steel sheets, coil windings 2 are set around on the stem 11 of iron core 1,
To realize the transformation of electromagnetic energy.Upper yoke 12 and lower yoke 13 are respectively arranged above and below stem 11, are used for shape
At closed magnetic circuit to transmit electromagnetic energy.
Wherein, coil windings 2 include first coil 21 and the second coil 22, and first coil 21 and the second coil 22 are cake
Formula winding construction；First coil 21 and the second coil 22 respectively by several corresponding first coil cakes and the second coil cake according to
It is secondary to stack together.The 21 received voltage of institute of first coil is less than the 22 received voltage of institute of the second coil；Described first
Coil 21 and second coil 22 are wound around with one heart on the iron core 1.It is to be understood that first coil 21 is low-voltage coil,
Second coil 22 is high-tension coil.Specifically, first coil 21 is wound around on the stem 11 of iron core 1,22 winding of the second coil
In the periphery of first coil 21, to realize the transformation of electromagnetic energy.
Dielectric used in the present embodiment is since its kinematic viscosity is higher, to guarantee its stream in oil-immersed transformer
Property is moved to meet the cooling requirements of oil-immersed transformer, the opposite size for increasing cooling oil duct is needed, to the oil immersed type transformation
Oil duct in device carries out special designing, to expand the width of cooling oil duct, and then promotes the flowing of dielectric, to avoid this
The excessively high situation of oil temperature occurs in oil-immersed transformer.Specifically, being formed with the first cooling oil duct in first coil 21
211, the width range of the first cooling oil duct 211 is 3.5mm~4.5mm.The second cooling oil duct is formed in second coil 22
221, the width range of the second cooling oil duct 221 is 3.5mm~4.5mm.
Further, insulation airway 3 is additionally provided between first coil 21 and the second coil 22, in optional embodiment
In, be inserted with a plurality of insulating stay between first coil 21 and the second coil 22 so that first coil 21 and the second coil 22 it
Between insulation set.Wherein, insulating stay is made of plastic material.
In order to increase the dielectric strength between first coil 21 and the second coil 22, in a preferred embodiment, insulation is empty
Insulating paper is provided in road 3, the insulating paper is arranged along the circumferential of the first coil 21 to wrap up the first coil 21.Example
Such as, insulating paper is crimped paper, and the number of plies of the crimped paper is one layer or two layers；The crimped paper with a thickness of 0.3 ±
0.05mm。
In practical application scene, it is provided with lead in the coil windings 2, to connect by the lead and external circuit
It connects.To prevent high oil temperature from influencing the use of lead.In a preferred embodiment, lead is made of annealed copper wire, lead and line
The joining part for enclosing winding 2 is welded using high-frequency induction welding technique, it is ensured that impulse- free robustness guarantees weldquality, can reduce oil immersed type change
Depressor operation risk coefficient；For the normal operation for being further ensured that lead, lead is arranged with casing outside；To improve its heat-resisting journey
Degree, the insulating paper of lead outer wall cladding are high-temperature resistance insulation paper.
To avoid the high oil temperature in fuel tank again, it is provided with temperature measuring device at the top of fuel tank, for passing through temperature
Measuring device measures the oil temperature of top of oil-tank, and temperature measuring device can be temperature sensor, passes through temperature sensor measurement oil
Oil temperature in case, and then convenient for the oil temperature in control fuel tank；To avoid fuel tank that from can not being replenished in time when being in oil starvation state, fuel tank
It is provided with for the oil conservater for fuel tank oil storage and repairing, to be handled in time in fuel tank oil starvation or more oil；To avoid fuel tank
Interior pressure is excessive, and fuel tank is provided with pressure relief valve；To avoid the dielectric in fuel tank from outflowing, it is preferable that pressure relief valve
It is set to the top of fuel tank.
The dielectric that the oil-immersed transformer provided in the present embodiment circulates in fuel tank, in the prior art use mineral
Dielectric is compared, and transformer life can be extended, and has the advantage of fire prevention and environmental protection, while the size by increasing cooling oil duct
And increase insulating paper between the first, second coil, cooling and insulation effect is effectively improved, and then improve oil immersed type change
The capability of overload of depressor, while improving the fire protecting performance of the oil-immersed transformer；Pass through the cooling oil to circulation dielectric
Road carries out special designing, carries out increased in size design to the first cooling oil duct 211 and the second cooling oil duct 221, and then overcome absolutely
The big problem of edge fluid viscosity is so that the circulation of dielectric is more convenient, to ensure that the heat dissipation effect of oil-immersed transformer entirety
Fruit improves the capability of overload of the oil-immersed transformer.
Oil-immersed transformer provided by the utility model uses the liquid by obtaining after gutter oil purification as specified exhausted
Edge liquid, the dielectric have specific cooling characteristics.At 40 degrees Celsius, the kinematic viscosity of dielectric is greater than 34mm2/ s, specific heat
For 2.2KJ/ (kg*K), thermal conductivity 0.16w/mK.The cooling characteristics of dielectric are specified according to this, matched design first, second is cold
But the size of oil duct, to obtain the oil-immersed transformer of the utility model.The oil-immersed transformer has good heat dissipation
Effect can quickly reduce the temperature of transformer, to reduce temperature-rise effect.Meanwhile the dielectric can effectively extend transformation
The service life of device, and the dielectric is easy degradation, fire savety is good, and is renewable resource.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of oil-immersed transformer, which is characterized in that the oil-immersed transformer include: fuel tank, iron core (1) and coil around
Group (2), the coil windings (2) are wound around on the stem (11) of the iron core (1), the iron core (1) and the coil around
Group (2) is all set in the fuel tank, and filled with specified dielectric in the fuel tank, the specified dielectric is for insulating and cold
The coil windings (2)；
The coil windings (2) include first coil (21) and the second coil (22), the received electricity of first coil (21) institute
Pressure is less than the received voltage of the second coil (22) institute, the first coil (21) and second coil (22) concentric winding
On the iron core (1)；
It is formed with the first cooling oil duct (211) in the first coil (21), the width range of first cooling oil duct (211)
For 3.5mm~4.5mm；It is formed with the second cooling oil duct (221) in second coil (22), second cooling oil duct (221)
Width range is 3.5mm~4.5mm.
2. oil-immersed transformer according to claim 1, which is characterized in that the specified dielectric at 40 degrees Celsius,
The kinematic viscosity of the specified dielectric is greater than 34mm2/ s, specific heat are 2.2KJ/ (kg*K), thermal conductivity 0.16w/mK.
3. oil-immersed transformer according to claim 1, which is characterized in that the first coil (21) is wound around the iron
The periphery of the stem (11) of core (1), second coil (22) are wound around the periphery of the first coil (21).
4. oil-immersed transformer according to claim 1, which is characterized in that the first coil (21) and second line
Insulation airway (3) is provided between circle (22).
5. oil-immersed transformer according to claim 4, which is characterized in that be provided with insulation in the insulation airway (3)
Paper；The insulating paper is arranged along the circumferential of the first coil (21) to wrap up the first coil (21).
6. oil-immersed transformer according to claim 5, which is characterized in that the insulating paper is crimped paper, the wrinkle
The number of plies of paper is one layer or two layers；The crimped paper with a thickness of 0.3 ± 0.05mm.
7. oil-immersed transformer according to claim 1, which is characterized in that the iron core (1) go back upper yoke (12) and
Lower yoke (13), the stem (11) are arranged between the upper yoke (12) and the lower yoke (13).
8. oil-immersed transformer according to claim 1, which is characterized in that it is provided with lead on the coil windings (2),
To be connect by the lead with external circuit.
9. oil-immersed transformer according to claim 8, which is characterized in that be arranged with casing outside the lead.
10. oil-immersed transformer according to claim 1, which is characterized in that be provided with temperature survey at the top of the fuel tank
Device and pressure relief valve are measured, the temperature measuring device is used to measure the oil temperature in fuel tank；The pressure relief valve is for keeping away
Exempt from the specified dielectric outflow in fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821325178.3U CN208706384U (en) | 2018-08-15 | 2018-08-15 | A kind of oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821325178.3U CN208706384U (en) | 2018-08-15 | 2018-08-15 | A kind of oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208706384U true CN208706384U (en) | 2019-04-05 |
Family
ID=65942441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821325178.3U Active CN208706384U (en) | 2018-08-15 | 2018-08-15 | A kind of oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208706384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071674A (en) * | 2020-09-14 | 2020-12-11 | 国网河南省电力公司温县供电公司 | Multi-level voltage change-over switch device |
| CN112447376A (en) * | 2020-11-24 | 2021-03-05 | 中国科学院电工研究所 | Distributed winding evaporative cooling transformer |
-
2018
- 2018-08-15 CN CN201821325178.3U patent/CN208706384U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071674A (en) * | 2020-09-14 | 2020-12-11 | 国网河南省电力公司温县供电公司 | Multi-level voltage change-over switch device |
| CN112071674B (en) * | 2020-09-14 | 2022-07-26 | 国网河南省电力公司温县供电公司 | Multi-stage voltage conversion switch device |
| CN112447376A (en) * | 2020-11-24 | 2021-03-05 | 中国科学院电工研究所 | Distributed winding evaporative cooling transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208706384U (en) | A kind of oil-immersed transformer | |
| CN201741564U (en) | Epoxy-resin vacuum-pouring dry-type current transformer | |
| CN107768103B (en) | High-performance transformer coil | |
| US20120075047A1 (en) | Transformer core | |
| CN204497035U (en) | Oil-filled transformer | |
| TWI282563B (en) | Amorphous iron core transformer | |
| CN210722679U (en) | Three-phase amorphous alloy oil-immersed distribution transformer | |
| CN105225801A (en) | 10KV oil-filled transformer | |
| CN202977085U (en) | Oil-immersed transformer | |
| CN103117156B (en) | A kind of epoxy resin enclosed dry-type transformer of special construction | |
| CN100573753C (en) | A kind of vapour-cooled transformer | |
| CN209947607U (en) | Distribution transformer with audible and visual alarm function | |
| CN218159929U (en) | Transformer with good heat dissipation performance | |
| CN205542294U (en) | Water -cooling dry -type testing transformer device | |
| CN100545963C (en) | Evaporative cooling traction transformer | |
| CN205645471U (en) | Coil heat abstractor of transformer | |
| CN107705961B (en) | vegetable oil power transformer | |
| CN207663895U (en) | A kind of power transformer of the inverter of low-temperature-rise | |
| CN201522932U (en) | High-capacity weather resistance dry-type current transformer | |
| CN201084517Y (en) | An inner/outer culvert radiating transformer housing | |
| CN106128693A (en) | A kind of high-insulativity water-cooled transformer | |
| CN209045287U (en) | A kind of high frequency transformer | |
| CN220796396U (en) | Adjustable magnetic element for CLLC | |
| CN204614615U (en) | Hybrid insulation systems three-phase stereo rewinding material rural power grids high overload distribution transformer | |
| CN205542295U (en) | Oily formula testing transformer with cooling structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An oil immersed transformer Effective date of registration: 20220224 Granted publication date: 20190405 Pledgee: Wuhan area branch of Hubei pilot free trade zone of Bank of China Ltd. Pledgor: WUHAN ZEDIAN NEW MATERIAL CO.,LTD. Registration number: Y2022420000045 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |