CN221079753U - Intelligent power transformer - Google Patents
Intelligent power transformer Download PDFInfo
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- CN221079753U CN221079753U CN202322459673.0U CN202322459673U CN221079753U CN 221079753 U CN221079753 U CN 221079753U CN 202322459673 U CN202322459673 U CN 202322459673U CN 221079753 U CN221079753 U CN 221079753U
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- 238000001816 cooling Methods 0.000 claims abstract description 27
- 230000017525 heat dissipation Effects 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013399 early diagnosis Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Transformer Cooling (AREA)
Abstract
The utility model discloses an intelligent power transformer, which comprises a transformer shell for loading a transformer main body, wherein the interior of the transformer shell is divided into an upper cavity and a lower cavity by an air duct partition plate, at least one centrifugal fan is arranged at the upper part of a cooling shell, and the centrifugal fan is opposite to the upper cavity of the transformer shell and is used for sucking hot air in the upper cavity; an air cooler is arranged at the lower part of the cooling shell, and the air cooler is opposite to the lower cavity of the transformer shell and is used for conveying cold air to the lower cavity; and hot air in the upper cavity is conveyed to the air cooler along the cooling shell under the action of the centrifugal fan, and cold air in the lower cavity enters the upper cavity along the heat dissipation air passage, so that circulating cooling is formed for the transformer main body, and circulating cold and hot air exchange heat dissipation is realized.
Description
Technical Field
The utility model relates to the technical field of power transformers, in particular to an intelligent power transformer.
Background
The transformer is basic equipment for power transmission and distribution, and is widely applied to the fields of industry, agriculture, traffic, urban communities and the like. In particular, the dry-type transformer has the advantages of high mechanical strength, strong short-circuit resistance, better thermal stability, strong heat dissipation capability, convenient operation and maintenance, small volume, low noise, long service life and the like, and is widely used in places with higher requirements on three-proofing performance.
Along with the continuous improvement of the scientific and technical level of China, the intelligent development is integrated into the development field of various industries. The appearance of the intelligent power transformer breaks through the integral operation mode of the prior power transformer, and the intelligent technology is well applied to the integral operation work of the power transformer. The intelligent level of the transformer is related to the operation reliability and investment economy of the intelligent substation.
The intelligent monitoring and operation technology of the transformer can not only monitor the transformer in an omnibearing way, but also realize state evaluation on the cooling state of the transformer, so that the potential fault can be diagnosed and predicted early, and the research of the intelligent monitoring and operation technology of the transformer has important significance on the operation safety of a power system and the realization of intellectualization of the whole transformer substation.
Disclosure of utility model
The utility model aims to provide an intelligent power transformer, which aims to solve the problem that the traditional transformer lacks intelligent monitoring and can not realize early diagnosis and prediction of latent faults, particularly cooling states.
In order to solve the technical problems, the utility model provides an intelligent power transformer, which comprises a transformer shell for loading a transformer main body, wherein the interior of the transformer shell is divided into an upper cavity and a lower cavity by an air duct partition board, and the upper cavity and the lower cavity are communicated by a heat dissipation air duct;
A cooling shell communicated with the inside of the transformer shell is arranged on one side of the transformer shell;
at least one centrifugal fan is arranged at the upper part of the cooling shell, and the centrifugal fan is opposite to the upper cavity of the transformer shell and is used for sucking hot air in the upper cavity;
an air cooler is arranged at the lower part of the cooling shell, and the air cooler is opposite to the lower cavity of the transformer shell and is used for conveying cold air to the lower cavity;
And hot air in the upper cavity is conveyed to the air cooler along the cooling shell under the action of the centrifugal fan, and cold air in the lower cavity enters the upper cavity along the heat dissipation air passage, so that circulating cooling is formed for the transformer main body.
Preferably, a pre-magnetizing transformer is arranged in the transformer shell, and the pre-magnetizing transformer is electrically connected with the transformer main body, so that excitation surge current can be restrained when the power transformer is in no-load closing, and smooth closing is ensured to realize flexible grid connection.
Preferably, an electrical control box is installed on the cooling shell, and the electrical control box integrates a pre-magnetizing control box of the pre-magnetizing transformer and a fan control box of the centrifugal fan.
Preferably, a wind pressure sensor is arranged in the upper cavity of the transformer shell, and wind pressure information is obtained uninterruptedly.
Preferably, a cooling water leakage alarm sensor is arranged in the lower cavity of the transformer shell and is used for monitoring the operation of the air cooler.
Preferably, a DJR aluminum alloy heater is arranged in the lower cavity of the transformer shell, and the transformer body is dehumidified through the DJR aluminum alloy heater.
Preferably, the hot air in the upper cavity of the transformer shell is sucked into the fan housing under the action of the centrifugal fan, the fan housing is at a right angle of 90 degrees, and the hot air is conveyed to the air cooler below.
Preferably, two centrifugal fans are arranged and symmetrically distributed on two sides of the cooling shell.
Preferably, an external terminal box is arranged on the transformer shell and used for connecting secondary line terminals of the transformer and auxiliary equipment thereof, and a convenient interface is provided for wiring, line checking, construction and debugging.
Compared with the prior art, the utility model has the beneficial effects that:
The hot air in the upper cavity of the intelligent power transformer is conveyed to the air cooler along the fan cover by 90 degrees under the action of the centrifugal fan, the cold air cooled by the air cooler enters the lower cavity and then enters the upper cavity along the heat dissipation air passage, so that the circulating cooling is formed for the transformer main body, and the circulating cold and hot air exchange heat dissipation is realized.
Drawings
Fig. 1 is a schematic structural diagram of a first view angle of an intelligent power transformer according to the present utility model;
fig. 2 is a schematic structural diagram of a second view angle of the intelligent power transformer according to the present utility model;
FIG. 3 is a front view of an intelligent power transformer provided by the present utility model;
Fig. 4 is a side view of an intelligent power transformer provided by the present utility model.
In the figure: 1. a transformer housing; 2. an air duct partition; 3. cooling the housing; 4. a centrifugal fan; 5. an air cooler; 6. a pre-magnetizing transformer; 7. an electrical control box; 10. a transformer body.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and specific examples. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
Examples
The utility model provides an intelligent power transformer, please refer to fig. 1-4, which comprises a transformer shell 1 for loading a transformer main body 10, wherein the interior of the transformer shell 1 is divided into an upper cavity and a lower cavity by an air duct partition board 2, and the upper cavity and the lower cavity are communicated by a heat dissipation air duct; a cooling shell 3 communicated with the inside of the transformer shell 1 is arranged on one side of the transformer shell 1; at least one centrifugal fan 4 is arranged at the upper part of the cooling shell 3, and the centrifugal fan 4 is opposite to the upper cavity of the transformer shell 1 and is used for sucking hot air in the upper cavity; an air cooler 5 is arranged at the lower part of the cooling shell 3, the air cooler 5 is opposite to the lower cavity of the transformer shell 1, and cold air is conveyed to the lower cavity; the hot air in the upper cavity is conveyed to the position of the air cooler 5 along the cooling shell 3 under the action of the centrifugal fan 4, and the cold air in the lower cavity enters the upper cavity along the heat dissipation air passage, so that the transformer main body 10 is circularly cooled.
Specifically, the pre-magnetizing transformer 6 is disposed in the transformer housing 1, and the pre-magnetizing transformer 6 is electrically connected with the transformer main body 10, so that excitation inrush current during no-load closing of the power transformer can be suppressed, and smooth closing is ensured to realize flexible grid connection.
In a small-capacity local power grid, there is a power transformer connecting a high-voltage power grid with a low-voltage power grid or electric equipment, the capacity of the power transformer may occupy a larger proportion of the capacity of the power grid, if infinite current measures are taken, when an empty load is switched on to connect the power grid, excitation inrush current may exceed the level born by the local power grid, so that smooth switching on cannot be performed. In order to inhibit excitation surge current when the power transformer is in no-load closing, so that the excitation surge current reaches the level acceptable by a local power grid, a pre-magnetizing technology is generally adopted to magnetize the power transformer, and when an empty load voltage level is established and approaches to the power grid voltage level, the power grid is closed again to realize flexible grid connection.
An electrical control box 7 is mounted on the cooling housing 3, and the electrical control box 7 integrates the pre-magnetizing control box of the pre-magnetizing transformer 6 and the fan control box of the centrifugal fan 4.
The electric control box is a power distribution control box series frequently used in the low-voltage power industry, the electric control box is the electric box serving as an electric control function, and the electric control box is used for assembling the switch equipment, the measuring instrument, the protection electric appliance and the auxiliary equipment in the closed or semi-closed metal box according to the electric wiring requirement, so that the normal operation requirement of the electric power system is met, the electric control box is convenient to overhaul, and the safety of personnel and surrounding equipment is not endangered. The circuit can be switched on or off by means of a manual or automatic switch during normal operation.
Specifically, a wind pressure sensor is arranged in the upper cavity of the transformer shell 1, wind pressure information is uninterruptedly obtained, and an alarm signal can be timely sent out when the wind pressure of a fan breaks down and is reduced, so that normal heat dissipation and safe operation of the transformer are ensured.
Specifically, a cooling water leakage alarm sensor is arranged in the lower cavity of the transformer shell 1 and is used for monitoring the operation of the air cooler 5, when the air cooler 5 leaks, liquid flows into the leakage alarm, and when the water level reaches a certain height, the cooling water leakage alarm sensor sends out an alarm signal, so that accidents are avoided.
Specifically, a DJR aluminum alloy heater is disposed in the lower cavity of the transformer housing 1, and dehumidifies the transformer main body 10 through the DJR aluminum alloy heater.
The DJR aluminum alloy heater is a novel electric heater specially designed for dehumidifying electric equipment. The heater is composed of special aluminum alloy heat-dissipating plate section bars and high-quality alloy heating wires. The heater has the characteristics of small volume, beautiful appearance, uniform heat dissipation, quick heat conduction, large heat dissipation area and the like, thereby ensuring that the service life of the heating wire is much longer than that of a common heater, and being capable of working reliably for a long time. The heater also has the characteristics of high insulating strength, simple installation and the like.
In some embodiments, the hot air in the upper cavity of the transformer housing 1 is sucked into the fan housing under the action of the centrifugal fan 4, and the fan housing is at a right angle of 90 degrees, and the hot air is delivered to the air cooler 5 below.
In order to generate enough wind pressure, the centrifugal fans 4 are arranged at two sides of the cooling shell 3 symmetrically.
The centrifugal fan is selected to consider that the negative pressure is relatively high, which is beneficial to hot air circulation; and the fan is easy to maintain, repair and replace outside. The working temperature of the fan is 90-100 ℃.
An external terminal box is arranged on the transformer shell 1 and used for connecting secondary line terminals of the transformer and auxiliary equipment thereof, and a convenient interface is provided for wiring, line checking, construction and debugging.
The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (9)
1. The intelligent power transformer is characterized by comprising a transformer shell (1) for loading a transformer main body (10), wherein the interior of the transformer shell (1) is divided into an upper cavity and a lower cavity by an air duct partition plate (2), and the upper cavity and the lower cavity are communicated by a heat dissipation air duct;
A cooling shell (3) communicated with the inside of the transformer shell (1) is arranged at one side of the transformer shell (1);
At least one centrifugal fan (4) is arranged at the upper part of the cooling shell (3), and the centrifugal fan (4) is opposite to the upper cavity of the transformer shell (1) and is used for sucking hot air in the upper cavity;
an air cooler (5) is arranged at the lower part of the cooling shell (3), the air cooler (5) is opposite to the lower cavity of the transformer shell (1), and cold air is conveyed to the lower cavity;
The hot air in the upper cavity is conveyed to the position of the air cooler (5) along the cooling shell (3) under the action of the centrifugal fan (4), and the cold air in the lower cavity enters the upper cavity along the heat dissipation air passage, so that the transformer main body (10) is circularly cooled.
2. An intelligent power transformer according to claim 1, wherein a pre-magnetizing transformer (6) is arranged in the transformer housing (1), and the pre-magnetizing transformer (6) is electrically connected with the transformer main body (10), so that exciting inrush current can be restrained when the power transformer is in no-load closing, and smooth closing is ensured to realize flexible grid connection.
3. An intelligent power transformer according to claim 2, characterized in that an electrical control box (7) is mounted on the cooling housing (3), said electrical control box (7) integrating the pre-magnetizing control box of the pre-magnetizing transformer (6) and the fan control box of the centrifugal fan (4).
4. An intelligent power transformer according to claim 1, characterized in that a wind pressure sensor is arranged in the upper cavity of the transformer housing (1) for uninterruptedly acquiring wind pressure information.
5. An intelligent power transformer according to claim 1, characterized in that a cooling water leakage alarm sensor is arranged in the lower cavity of the transformer housing (1) for monitoring the operation of the air cooler (5).
6. An intelligent power transformer according to claim 5, characterized in that a DJR aluminum alloy heater is arranged in the lower cavity of the transformer housing (1), by which the transformer body (10) is dehumidified.
7. An intelligent power transformer according to claim 1, characterized in that the hot air in the upper cavity of the transformer housing (1) is sucked into the fan housing under the action of the centrifugal fan (4), and the fan housing is at a right angle of 90 degrees, and the hot air is delivered to the air cooler (5) below.
8. An intelligent power transformer according to claim 7, characterized in that the centrifugal fans (4) are arranged in two, symmetrically distributed on both sides of the cooling housing (3).
9. An intelligent power transformer according to claim 1, characterized in that the transformer housing (1) is provided with an external terminal box for secondary line terminal connection of the transformer and its auxiliary equipment, providing a convenient interface for wiring, checking lines, construction and debugging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322459673.0U CN221079753U (en) | 2023-09-11 | 2023-09-11 | Intelligent power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322459673.0U CN221079753U (en) | 2023-09-11 | 2023-09-11 | Intelligent power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221079753U true CN221079753U (en) | 2024-06-04 |
Family
ID=91263948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322459673.0U Active CN221079753U (en) | 2023-09-11 | 2023-09-11 | Intelligent power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221079753U (en) |
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2023
- 2023-09-11 CN CN202322459673.0U patent/CN221079753U/en active Active
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