CN220272266U - Oil-immersed nitrogen-filled explosion-proof transformer - Google Patents
Oil-immersed nitrogen-filled explosion-proof transformer Download PDFInfo
- Publication number
- CN220272266U CN220272266U CN202320619333.7U CN202320619333U CN220272266U CN 220272266 U CN220272266 U CN 220272266U CN 202320619333 U CN202320619333 U CN 202320619333U CN 220272266 U CN220272266 U CN 220272266U
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- oil
- transformer
- oil tank
- tank
- 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 80
- 238000003860 storage Methods 0.000 claims abstract description 44
- 238000004880 explosion Methods 0.000 claims abstract description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 9
- 239000013589 supplement Substances 0.000 claims 1
- 230000006870 function Effects 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 239000003063 flame retardant Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- -1 and at this moment Chemical compound 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model discloses an oil immersed nitrogen filled explosion-proof transformer, wherein transformer oil is filled at the lower part of an oil tank, nitrogen is filled at the upper part of the oil tank to form a nitrogen layer, a nitrogen storage device communicated with the nitrogen layer in the oil tank is arranged at one side of the oil tank, when the pressure of the nitrogen layer is reduced, nitrogen is supplemented into the nitrogen layer of the oil tank by the nitrogen storage device, and when the pressure of the nitrogen layer is increased, nitrogen is output to the nitrogen storage device by the nitrogen layer of the oil tank to release pressure, so that the nitrogen layer of the oil tank is always kept in a proper positive pressure range, the functions of flame retardance and explosion prevention can be achieved, moisture in the atmosphere can be effectively prevented from entering the oil tank, and the failure rate of operation is reduced on the basis of ensuring safety; the transformer has the advantages of simple structure, reasonable design, high safety, low failure rate and the like.
Description
Technical Field
The utility model discloses the technical field of transformers, in particular to an oil-immersed nitrogen-filled explosion-proof transformer.
Background
The transformer is one of important equipment in industrial and mining enterprises and civil building power supply and distribution systems, transformer oil in the transformer can cause insulation failure once leakage occurs, high-voltage bushing discharge is extremely easy to generate to cause fire and even explosion, and therefore, the fireproof and explosion-proof performance of the transformer is a focus of attention.
Currently, explosion-proof transformers mainly include: SF6 gas insulation transformer, dry type transformer, high ignition point oil transformer, and gas-filled sealing transformer. The inflatable sealing transformer is characterized in that an upward protruding box body is arranged on a box cover of a transformer oil tank, the inside of the box body is communicated with the transformer oil tank, a part of transformer oil and a part of nitrogen are contained in the box body, and transformer oil volume compensation is carried out through the nitrogen, so that the purpose of explosion prevention is achieved. Therefore, in order to increase the volume compensation amount of nitrogen to transformer oil in the transformer, the transformer is often required to be highly designed to be filled with enough nitrogen, however, the design of an excessively high oil tank brings certain difficulties to transportation and installation. In addition, after the transformer is operated for a long time, the nitrogen in the transformer is inevitably lost, so that the pressure of the nitrogen layer is reduced, even in a negative pressure state, and moisture in the atmosphere enters the oil tank, so that the inside of the oil tank is failed.
Therefore, whether a novel nitrogen-filled explosion-proof transformer can be studied to solve the problems is a problem to be solved urgently.
Disclosure of Invention
In view of the above, the utility model provides an oil-immersed nitrogen-filled explosion-proof transformer to solve one of the problems in the background art.
The utility model provides a technical scheme, in particular to an oil-immersed nitrogen-filled explosion-proof transformer, which comprises: the device comprises an oil tank, a transformer body, a high-voltage side leading-out sleeve, a low-voltage side leading-out sleeve, a nitrogen storage device and a connecting pipe;
the inside of the oil tank is provided with a cavity, transformer oil is filled in the cavity, a space is reserved between the upper surface of the transformer oil and the tank cover of the oil tank, nitrogen is filled in the space, and a nitrogen layer is formed between the transformer oil and the tank cover;
the transformer body is arranged in the oil tank and immersed in the transformer oil;
the high-voltage side lead-out sleeve is arranged on the box cover, and the lower end of the high-voltage side lead-out sleeve penetrates through the box cover to be connected with a high-voltage coil of the transformer body;
the low-voltage side lead-out sleeve is arranged on the box cover, and the lower end of the low-voltage side lead-out sleeve penetrates through the box cover to be connected with a low-voltage coil of the transformer body;
the nitrogen storage device is positioned at one side of the oil tank;
one end of the connecting pipe is communicated with the air inlet of the oil tank, and the other end of the connecting pipe is communicated with the nitrogen storage device.
Preferably, the nitrogen storage device is a storage tank, and the pressure of nitrogen in the storage tank is greater than atmospheric pressure.
Further preferably, the gas storage tank is provided with an expansion joint, and the volume expansion can be performed.
Further preferably, the nitrogen storage device is a nitrogen generation device.
Further preferably, a valve is provided at a connection portion of the connection pipe and the air inlet of the oil tank.
According to the oil immersed nitrogen filled explosion-proof transformer, transformer oil is filled at the lower part of the oil tank, nitrogen is filled at the upper part of the oil tank to form a nitrogen layer, and a nitrogen gas storage device communicated with the nitrogen layer in the oil tank is arranged at one side of the oil tank. In addition, through the setting of above-mentioned nitrogen gas storage device, need not to be in order to increase the memory space of nitrogen gas and with the too high of oil tank setting, will be in the past the single oil tank storage of nitrogen gas and change the double space storage of oil tank and nitrogen gas storage device into to the connecting pipe UNICOM reaches the fire-retardant function the same in the past, and even stronger explosion-proof effect.
The realization principle of the flame-retardant and explosion-proof function of the nitrogen layer in the transformer is as follows: the transformer oil can be isolated from the outside air due to the arrangement of the nitrogen layer, so that the flame retardant purpose is achieved; when the pressure exceeds a threshold value, part of nitrogen enters the nitrogen storage device through the connecting pipe so as to prevent the oil tank from cracking and achieve an explosion-proof effect.
The oil-immersed nitrogen-filled explosion-proof transformer provided by the utility model has the advantages of simple structure, reasonable design, high safety, low failure rate and the like.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure of the utility model as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an oil-immersed nitrogen-filled explosion-proof transformer according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus consistent with aspects of the utility model as detailed in the accompanying claims.
Referring to fig. 1, an oil immersed nitrogen filled explosion-proof transformer is provided in this embodiment, and the transformer is mainly composed of an oil tank 1, a transformer body 2, a high-voltage side lead-out sleeve 3, a low-voltage side lead-out sleeve 4, a nitrogen storage device 5 and a connecting pipe 6, wherein a cavity is arranged in the oil tank 1, transformer oil 11 is contained in the cavity, a space is reserved between the upper surface of the transformer oil 11 and a tank cover 12 of the oil tank 1, nitrogen is filled in the space, and a nitrogen layer 13 is formed between the transformer oil and the tank cover; the transformer body 2 is arranged in the oil tank 1, immersed in the transformer oil 11, the high-voltage side lead-out sleeve 3 is arranged on the tank cover 12, the lower end of the high-voltage side lead-out sleeve 3 penetrates through the tank cover 12 to be connected with a high-voltage coil of the transformer body 2, the low-voltage side lead-out sleeve 4 is arranged on the tank cover 12, the lower end of the low-voltage side lead-out sleeve 4 penetrates through the tank cover 12 to be connected with a low-voltage coil of the transformer body 2, the nitrogen gas storage device 5 is arranged on one side of the oil tank 1, one end of the connecting pipe 6 is communicated with an air inlet of the oil tank 1, and the other end of the connecting pipe is communicated with the nitrogen gas storage device 5.
According to the transformer, the nitrogen layer is arranged between the transformer oil and the tank cover to isolate the transformer oil from air, the transformer body is immersed in the transformer oil, the high-voltage side leading-out sleeve and the low-voltage side leading-out sleeve are led out after voltage transformation, the nitrogen storage device is arranged on one side of the oil tank of the transformer and is communicated with the nitrogen layer in the oil tank through the connecting pipe to form a communicating space, the storage amount of nitrogen is increased on the basis of not increasing the oil tank, at the moment, only one layer of nitrogen layer capable of realizing the isolation of the transformer oil and air is arranged on the oil tank, and the volume compensation of the transformer oil tank can be realized by the cooperation of the nitrogen layer and the nitrogen storage device.
The nitrogen storage device 5 can adopt various structural forms, for example, a simple storage tank can be used as long as the storage of nitrogen can be realized, but the pressure of the nitrogen in the storage tank is required to be larger than the atmospheric pressure, and as the storage tank and the nitrogen layer are communicated spaces, when the pressure of the storage tank is larger than the atmospheric pressure, the nitrogen layer is always in a positive pressure state, so that the leakage of transformer oil can be avoided, and the entry of moisture in the atmosphere into the oil tank can be prevented, thereby causing the operation failure of internal elements; in order to increase the pressure release capability of the gas storage tank to the oil tank, as an improvement of the technical scheme, the gas storage tank with an expansion joint can be selected, and the gas storage tank shell can expand and contract in volume according to the change of pressure at the moment so as to expand the adjustment range of the pressure. In addition, can also select the nitrogen gas generating device as nitrogen gas storage device, it is according to the pressure of nitrogen layer side automatic production nitrogen gas or absorb nitrogen gas, specifically, when the pressure of nitrogen layer reduces to the threshold value, nitrogen gas generating device automatic start produces nitrogen gas and to nitrogen layer side input nitrogen gas, and when the pressure of nitrogen layer exceeds the threshold value, nitrogen gas generating device automatic absorption nitrogen gas, and at this moment, nitrogen gas in the nitrogen layer side flows into in the nitrogen gas generating device, carries out the pressure release.
For convenient transportation, be provided with valve 7 in the air inlet junction of connecting pipe 6 and oil tank 1, can open or close the air inlet in the oil tank through this valve 7, can transport nitrogen gas storage device and oil tank separately in the transportation, reduce occupation space.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (5)
1. An oil immersed nitrogen filled explosion proof transformer, comprising: the transformer comprises an oil tank (1), a transformer body (2), a high-voltage side lead-out sleeve (3), a low-voltage side lead-out sleeve (4), a nitrogen storage device (5) and a connecting pipe (6);
the oil tank is characterized in that a cavity is arranged in the oil tank (1), transformer oil (11) is contained in the cavity, a space is reserved between the upper surface of the transformer oil (11) and a tank cover (12) of the oil tank (1), nitrogen is filled in the space, and a nitrogen layer (13) is formed between the transformer oil and the tank cover;
the transformer body (2) is arranged in the oil tank (1) and immersed in the transformer oil (11);
the high-voltage side lead-out sleeve (3) is arranged on the box cover (12), and the lower end of the high-voltage side lead-out sleeve (3) penetrates through the box cover (12) to be connected with a high-voltage coil of the transformer body (2);
the low-voltage side lead-out sleeve (4) is arranged on the box cover (12), and the lower end of the low-voltage side lead-out sleeve (4) penetrates through the box cover (12) to be connected with a low-voltage coil of the transformer body (2);
the nitrogen storage device (5) is positioned at one side of the oil tank (1);
one end of the connecting pipe (6) is communicated with the air inlet of the oil tank (1), the other end of the connecting pipe is communicated with the nitrogen gas storage device (5), when the pressure of the nitrogen gas layer is reduced, the nitrogen gas storage device supplements nitrogen into the nitrogen gas layer of the oil tank, and when the pressure of the nitrogen gas layer is increased, the nitrogen gas layer of the oil tank outputs nitrogen gas to the nitrogen gas storage device for pressure relief.
2. The oil immersed nitrogen filled explosion proof transformer according to claim 1, wherein the nitrogen storage device (5) is a gas storage tank, and the pressure of nitrogen in the gas storage tank is greater than atmospheric pressure.
3. The oil immersed nitrogen filled explosion proof transformer according to claim 2, wherein the gas storage tank is provided with an expansion joint, and the volume expansion can be performed.
4. The oil immersed nitrogen filled explosion proof transformer according to claim 1, wherein the nitrogen storage device (5) is a nitrogen generating device.
5. An oil immersed nitrogen filled explosion proof transformer according to claim 1, wherein a valve (7) is arranged at the connection of the connecting pipe (6) and the air inlet of the oil tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320619333.7U CN220272266U (en) | 2023-03-27 | 2023-03-27 | Oil-immersed nitrogen-filled explosion-proof transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320619333.7U CN220272266U (en) | 2023-03-27 | 2023-03-27 | Oil-immersed nitrogen-filled explosion-proof transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220272266U true CN220272266U (en) | 2023-12-29 |
Family
ID=89314689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320619333.7U Active CN220272266U (en) | 2023-03-27 | 2023-03-27 | Oil-immersed nitrogen-filled explosion-proof transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220272266U (en) |
-
2023
- 2023-03-27 CN CN202320619333.7U patent/CN220272266U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203250630U (en) | Capacitor voltage transformer electromagnetism unit intermediate transformer | |
| CN209561164U (en) | A kind of explosion-proof casing of ultra-high/extra-high voltage gas-insulated transformer class with staged isolation gas chamber | |
| CN106683826B (en) | A kind of oil-immersed transformer of high security | |
| CN220272266U (en) | Oil-immersed nitrogen-filled explosion-proof transformer | |
| CN104124039A (en) | Oil-immersed type high-overload power transformer | |
| US20230290559A1 (en) | Prefabricated transformer station, oil-immersed transformer, and photovoltaic system | |
| CN206639699U (en) | A kind of 110kV Assembled high-voltage shunted capacitors device | |
| CN212593609U (en) | Explosion-proof oil-discharging nitrogen-injecting fire extinguishing device for oil-immersed transformer | |
| CN101740210A (en) | Amorphous alloy 20kV underground transformer | |
| CN107845486A (en) | Fire-type oil-immersed power transformer | |
| CN207199400U (en) | The fire-proof and explosion-proof safety guard of transformer | |
| CN109672110B (en) | Remote intelligent power transmission equipment | |
| CN204178867U (en) | A kind of explosion-proof metal expander | |
| CN201138603Y (en) | Novel oil-immersed type transformer with amorphous alloy iron core | |
| CN207199401U (en) | A kind of oil-filled transformer shell that can be fire-retardant | |
| CN201402932Y (en) | Semi-open box-type substation | |
| CN203931717U (en) | A kind of oil immersed type high overload power transformer | |
| CN206758203U (en) | The end construction of dry type low-voltage, high-current sleeve pipe power transformer enclosure inside points | |
| CN221597219U (en) | Liquid immersion type explosion-proof transformer substation | |
| CN206657716U (en) | A kind of hermetically sealed prepackage type device for transformer used for wind power generation | |
| CN210517555U (en) | Fireproof and explosion-proof power transformer substation | |
| CN213459344U (en) | Transformer for adjusting oil level by utilizing air gap compensation | |
| CN105405595A (en) | High-efficiency and energy-saving amorphous alloy transformer employing dry-type bushings led out for completely eradicating leakage | |
| CN109524218A (en) | A kind of explosion-proof casing of ultra-high/extra-high voltage gas-insulated transformer class with buffer air chamber | |
| CN106710788A (en) | Oil immersed explosion-proof transformer for pit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |