CN219286175U - Oil immersed transformer - Google Patents
Oil immersed transformer Download PDFInfo
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- CN219286175U CN219286175U CN202320726370.8U CN202320726370U CN219286175U CN 219286175 U CN219286175 U CN 219286175U CN 202320726370 U CN202320726370 U CN 202320726370U CN 219286175 U CN219286175 U CN 219286175U
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- box body
- heating device
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Abstract
The utility model provides an oil immersed transformer, comprising: the transformer comprises a transformer body and a heating device, wherein an installation part is arranged on the outer wall of the transformer body, the heating device is installed on the transformer body through the installation part, heat generated by the heating device can be transmitted to the inside of the transformer body through the outer wall of the transformer body, the heating device comprises a heating box body and a partition plate arranged in the heating box body, and the heating box body is arranged on the bottom surface of the transformer body in a sticking mode; the partition plate divides the space in the heating box body into a plurality of heating cavities, and the technical problem that the reliability of the oil immersed transformer in storage and operation in a low-temperature environment is difficult to guarantee is solved.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to an oil immersed transformer.
Background
The transformer mainly comprises a dry-type transformer and an oil-immersed transformer. Because of the casting characteristic of epoxy resin, the expansion coefficients of copper wires and epoxy resin in the winding are different, the shrinkage rate of the copper wires is far greater than that of the epoxy resin, the epoxy resin is easy to crack in a low-temperature environment, the mechanical strength and the electrical strength of a product are weakened, and great hidden danger exists in the subsequent operation process. The main insulating medium in the oil immersed transformer is transformer oil, the existing low temperature resistant oil is No. 45, the condensation point of the oil is 45 degrees below zero, the oil immersed transformer can be safely used at the environment temperature of 40 degrees below zero, however, when the temperature is reduced again, the fluidity of the transformer oil is weakened, the transformer oil is solidified at about 40 degrees below zero, and the transformer oil cannot be used due to solidification. Therefore, at present, the transformer has the technical problem that the reliability of storage and operation in a low-temperature environment is difficult to guarantee.
Disclosure of Invention
The utility model aims to provide an oil-immersed transformer so as to solve the technical problem that the reliability of the oil-immersed transformer in storage and operation in a low-temperature environment is difficult to guarantee.
The above object of the present utility model can be achieved by the following technical solutions:
the utility model provides an oil immersed transformer, comprising: the transformer comprises a transformer body and a heating device, wherein an installation part is arranged on the outer wall of the transformer body, the heating device is installed on the transformer body through the installation part, and heat generated by the heating device can be transmitted to the inside of the transformer body through the outer wall of the transformer body.
In a preferred embodiment, the mounting portion is provided on a bottom surface of the transformer body.
In a preferred embodiment, the heating device comprises a heating box body, and the heating box body is arranged on the bottom surface of the transformer body in a pasting manner.
In a preferred embodiment, the top surface of the heating box body is in contact with the bottom surface of the transformer body, or a gap is provided between the top surface of the heating box body and the bottom surface of the transformer body.
In a preferred embodiment, the heating device comprises a partition plate arranged in the heating box body, and the partition plate divides the space in the heating box body into a plurality of heating cavities.
In a preferred embodiment, the partition plate comprises a communicating end and a closing end, the closing end is connected to the inner wall of the heating box body, a channel is arranged between the communicating end and the inner wall of the heating box body, and the adjacent heating cavities are communicated through the channel.
In a preferred embodiment, a plurality of said partitions are arranged side by side at intervals, the communicating ends of each of said partitions being alternately arranged.
In a preferred embodiment, the heating means comprises a heating belt arranged in the heating chamber.
In a preferred embodiment, the heating device comprises a panel arranged on the front end face of the heating box body and a junction box arranged on the panel, and the heating belt is connected with the junction box.
In a preferred embodiment, the mounting portion includes a drawer cavity in which the heating cartridge is movably mounted.
In a preferred embodiment, the mounting portion includes a drawer bottom plate and a drawer side plate for constructing the drawer cavity, the drawer bottom plate and the drawer side plate are insulation boards, and the insulation boards include an interlayer and an insulation structure disposed in the interlayer.
In a preferred embodiment, the oil immersed transformer comprises a temperature control device and a temperature measuring mechanism, wherein the temperature measuring mechanism is arranged on the transformer body, the temperature measuring mechanism and the heating device are both connected with the temperature control device, and the temperature control device controls the heating device according to signals of the temperature measuring mechanism.
The utility model has the characteristics and advantages that:
when the oil immersed transformer is in a low-temperature environment, the heating device is started, generated heat is transferred to the inside of the transformer body, so that the temperature of transformer oil is higher than the condensation point, the temperature of the transformer oil is kept above the effective temperature, the performance of the transformer oil is ensured, the reliable operation of the oil immersed transformer is ensured, the damage caused by too low temperature in the storage and transportation process is avoided, the storage and transportation problems of the oil immersed transformer in the low-temperature environment are solved, the requirement on the storage environment is reduced, the purpose that a special house is not required to be built for storing the oil immersed transformer even in extremely cold areas is achieved, and the oil immersed transformer can be placed in an open-air position.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an overall schematic diagram of an oil immersed transformer provided by the utility model;
fig. 2 is a top view of a heating device in an oil immersed transformer provided by the utility model;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
fig. 5 is a schematic diagram of a temperature control device in an oil immersed transformer according to the present utility model.
Reference numerals illustrate:
10. a transformer body;
20. a mounting part; 200. a drawer cavity; 21. a drawer bottom plate; 22. a drawer side plate;
31. a terminal box; 32. A temperature control device; 33. A temperature measuring mechanism;
40. a heating device; 41. A heating belt;
50. heating the box body; 51. A panel; 52. A junction box;
60. a partition plate; 61. a closed end; 62. a communication end;
63. a heating chamber; 64. a channel.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides an oil-immersed transformer, as shown in fig. 1-3, comprising: the transformer comprises a transformer body 10 and a heating device 40, wherein the outer wall of the transformer body 10 is provided with a mounting part 20, the heating device 40 is mounted on the transformer body 10 through the mounting part 20, and heat generated by the heating device 40 can be transferred to the inside of the transformer body 10 through the outer wall of the transformer body 10.
When the oil immersed transformer is in a low-temperature environment, the heating device 40 is started, generated heat is transferred to the inside of the transformer body 10, so that the transformer oil temperature is higher than the condensation point, the transformer oil temperature is kept above the effective temperature, and the performance of the transformer oil is ensured, so that the reliable operation of the oil immersed transformer is ensured, damage caused by too low temperature in the storage and transportation process is avoided, the storage and transportation problems of the oil immersed transformer in the low-temperature environment are solved, and the requirement on the storage environment is reduced.
As shown in fig. 1, the installation portion 20 is disposed on the bottom surface of the transformer body 10, the heating device 40 is installed on the lower side of the transformer body 10 through the installation portion 20, and heat generated by the heating device 40 is transferred upwards through the bottom surface of the transformer body 10, so that the heat is transferred to transformer oil in various places in the transformer body 10.
In an embodiment, the heating device 40 includes a heating box 50, where the heating box 50 is disposed on the bottom surface of the transformer body 10, so that heat of the heating box 50 is transferred to the bottom surface of the transformer body 10. Preferably, the heating cartridge 50 is generally rectangular parallelepiped.
Further, the top surface of the heating case 50 is in contact with the bottom surface of the transformer body 10, so that the heat of the heating case 50 can be directly transferred to the transformer body 10. In another embodiment, a gap is provided between the top surface of the heating box 50 and the bottom surface of the transformer body 10, and the heat of the heating box 50 can be transferred to the transformer body 10 in a radiation manner, so that the bottom surface of the transformer body 10 is heated more uniformly.
In one embodiment, the heating device 40 includes a partition 60 disposed in the heating box 50, and the partition 60 divides the space in the heating box 50 into a plurality of heating chambers 63, so as to facilitate uniform heat transfer to various portions of the bottom surface of the transformer body 10. The partition 60 may be made of a high temperature PE sheet, and the heating cartridge 50 is preferably made of a high temperature PE sheet.
Further, the partition plate 60 includes a communication end 62 and a closed end 61, the closed end 61 is connected to the inner wall of the heating box 50, a channel 64 is provided between the communication end 62 and the inner wall of the heating box 50, and adjacent heating cavities 63 are communicated through the channel 64, as shown in fig. 2 and 4, so that each heating cavity 63 is sequentially communicated along a path, which is beneficial to uniformly dispersing heat of the heating box 50, and further ensures that each part of the bottom surface of the transformer body 10 is uniformly heated.
Further, the plurality of partitions 60 are arranged side by side at intervals, the communication ends 62 of the partitions 60 are alternately arranged, and the heating chambers 63 and the channels 64 form a space extending along a single path and reciprocally folded back, and the heat of the heating device 40 is mainly dispersed in the space, so that the heat is guaranteed to be uniformly transferred to the bottom surface of the transformer body 10.
The heating device 40 includes a heating belt 41 disposed in a heating chamber 63, the heating belt 41 serving as a heat source, and generates heat to heat transformer oil. Preferably, as shown in fig. 2 and 4, the heating tape 41 is disposed in the heating chamber 63 and the passage 64 and is arranged along the extending direction of the heating chamber 63 and the passage 64, and the heating tape 41 is reciprocally extended along a single path, which is advantageous for uniformly transferring heat to the transformer body 10.
As shown in fig. 2 and 3, the heating device 40 includes a panel 51 provided on the front end surface of the heating case 50 and a junction box 52 provided on the panel 51, and the heating belt 41 is connected to the junction box 52. The junction box 52 is provided with a power terminal, and the heating belt 41 can be connected with the power terminal through a wire; the junction box 52 is arranged outside the panel 51, and the heating belt power supply is led out of the panel 51, so that wiring is facilitated. The power terminal can be fixed on the panel 51, the junction box 52 covers the power terminal to protect the power terminal, and the junction box 52 can be made of PE board.
In one embodiment, the mounting portion 20 includes a drawer cavity 200, the heating box 50 is movably mounted in the drawer cavity 200, the heating box 50 may be in a drawer shape, so as to be detachable, and the heating device 40 may be detached when the transformer is in normal operation.
The mounting portion 20 includes a drawer bottom plate 21 and a drawer side plate 22, and the drawer bottom plate 21 and the drawer side plate 22 configure a drawer cavity 200. Specifically, the drawer bottom plate 21 may be disposed near the lower foot pad of the transformer body 10, and the left and right sides of the drawer bottom plate 21 are respectively provided with drawer side plates 22.
Further, the drawer bottom plate 21 and the drawer side plate 22 are both heat-insulating plates, and the heat-insulating plates comprise an interlayer and a heat-insulating structure arranged on the interlayer, so that heat dissipation is reduced on one hand, and on the other hand, heat of the heating device 40 is mainly transmitted to the transformer body 10 through the top surface of the heating device, and uniform heating of the bottom surface of the transformer body 10 is facilitated. Specifically, the heat-insulating structure arranged in the interlayer can be heat-insulating cotton.
In an embodiment, the oil-immersed transformer includes a temperature control device 32 and a temperature measuring mechanism 33, as shown in fig. 1 and 5, the temperature measuring mechanism 33 is disposed on the transformer body 10, the temperature measuring mechanism 33 and the heating device 40 are connected to the temperature control device 32, and the temperature control device 32 controls the heating device 40 according to signals of the temperature measuring mechanism 33. The temperature control device 32 can control the start and stop of the heating belt 41 to ensure that the temperature of the transformer oil is above 0 ℃ and the performance of the transformer oil is ensured; at low temperature, the heating belt 41 operates; when the transformer oil temperature rises to the set point, the heating belt 41 stops working to achieve that the transformer oil temperature remains above the congealing point. The temperature measuring mechanism 33 may be a temperature sensor for measuring the oil temperature of the transformer oil in the transformer body 10, and the temperature control device 32 controls the working state of the heating device 40 according to the oil temperature value measured by the temperature sensor.
The temperature control device 32 and the terminal box 31 may be both installed at the outer wall of the transformer body 10, and the power terminal is led to the heating belt power supply in the terminal box 31 through a wire. Specifically, the temperature control device 32 is provided with an alarm temperature node, the temperature control device 32 is connected in series with a heating belt power supply and a power supply which are introduced into the terminal box 31, when the temperature of transformer oil is close to 40 ℃ below zero, the temperature control device 32 is closed, the heating belt power supply is connected, the heating belt 41 starts to heat, heat is transferred into the transformer oil through the bottom of the transformer body 10, and the transformer oil starts to heat; when the oil temperature of the transformer reaches 0 ℃, the temperature control device 32 is disconnected, so that the power supply of the heating belt is disconnected, and the heating is stopped. The oil immersed transformer is mainly applied to a low-temperature environment.
The foregoing is merely a few embodiments of the present utility model and those skilled in the art may make various modifications or alterations to the embodiments of the present utility model in light of the disclosure herein without departing from the spirit and scope of the utility model.
Claims (10)
1. An oil immersed transformer, comprising: the transformer comprises a transformer body and a heating device, wherein an installation part is arranged on the outer wall of the transformer body, the heating device is installed on the transformer body through the installation part, and heat generated by the heating device can be transmitted into the transformer body through the outer wall of the transformer body;
the heating device comprises a heating box body and a partition plate arranged in the heating box body, and the heating box body is arranged on the bottom surface of the transformer body in a sticking way;
the partition plate divides the space in the heating box body into a plurality of heating cavities.
2. The oil-immersed transformer according to claim 1, wherein,
the installation part is arranged on the bottom surface of the transformer body.
3. The oil-immersed transformer according to claim 1, wherein,
the top surface of the heating box body is contacted with the bottom surface of the transformer body, or a gap is arranged between the top surface of the heating box body and the bottom surface of the transformer body.
4. The oil-immersed transformer according to claim 1, wherein,
the partition plate comprises a communication end and a closed end, wherein the closed end is connected to the inner wall of the heating box body, a channel is arranged between the communication end and the inner wall of the heating box body, and the adjacent heating cavities are communicated through the channel.
5. The oil-immersed transformer according to claim 4, wherein,
the plurality of the partition boards are arranged side by side at intervals, and the communication ends of the partition boards are alternately arranged.
6. The oil-immersed transformer according to claim 1, wherein,
the heating device includes a heating belt disposed in the heating chamber.
7. The oil-immersed transformer according to claim 6, wherein,
the heating device comprises a panel arranged on the front end face of the heating box body and a junction box arranged on the panel, and the heating belt is connected with the junction box.
8. The oil-immersed transformer according to claim 2, wherein,
the mounting portion includes a drawer cavity in which the heating cartridge is movably mounted.
9. The oil-immersed transformer according to claim 8, wherein,
the installation department is including being used for constructing drawer bottom plate and the drawer curb plate in drawer chamber, the drawer bottom plate with the drawer curb plate is the heated board, the heated board include the intermediate layer with set up in the heat preservation structure of intermediate layer.
10. The oil-immersed transformer according to any one of claims 1-9, wherein,
the oil immersed transformer comprises a temperature control device and a temperature measuring mechanism, wherein the temperature measuring mechanism is arranged on the transformer body, the temperature measuring mechanism and the heating device are both connected with the temperature control device, and the temperature control device controls the heating device according to signals of the temperature measuring mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320726370.8U CN219286175U (en) | 2023-04-04 | 2023-04-04 | Oil immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320726370.8U CN219286175U (en) | 2023-04-04 | 2023-04-04 | Oil immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219286175U true CN219286175U (en) | 2023-06-30 |
Family
ID=86914160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320726370.8U Active CN219286175U (en) | 2023-04-04 | 2023-04-04 | Oil immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219286175U (en) |
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2023
- 2023-04-04 CN CN202320726370.8U patent/CN219286175U/en active Active
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