CN220294406U - Transformer air drying equipment - Google Patents
Transformer air drying equipment Download PDFInfo
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- CN220294406U CN220294406U CN202320719453.4U CN202320719453U CN220294406U CN 220294406 U CN220294406 U CN 220294406U CN 202320719453 U CN202320719453 U CN 202320719453U CN 220294406 U CN220294406 U CN 220294406U
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- air
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- pipe
- compressed air
- pressure
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- 238000007605 air drying Methods 0.000 title claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims abstract description 33
- 238000001035 drying Methods 0.000 claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 20
- 238000012423 maintenance Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of transformer air drying, and discloses transformer air drying equipment, which comprises an air drying assembly, wherein the air drying assembly comprises: the air compressor is used for generating compressed air; and the filtering component is connected with the air compressor and is used for filtering out impurities and moisture in the compressed air. According to the utility model, compressed air is generated through the air compressor, the filter assembly filters the compressed air, moisture in the compressed air is filtered in a gradient way, the cold drying assembly performs heat exchange with the compressed air to reduce the temperature of the compressed air and dry the compressed air, finally, dry gas is injected into the transformer through the air outlet pipe, and the safety valve regulates and controls the pressure of the dry gas in the pressure regulating pipe, so that the control of the pressure in the air outlet pipe and the pressure in the transformer can be realized, the situation that transformer oil is discharged by mistake due to overlarge pressure is avoided, and the reliability and safety of dry gas injection are improved.
Description
Technical Field
The utility model relates to the technical field of transformer air drying, in particular to transformer air drying equipment.
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. When overhauling large-scale power equipment such as transformer, in order to shorten the maintenance time limit for a project, improve maintenance quality, need to pour into dry air into the inside of transformer into to make the inside insulation of transformer not wet, the maintainer can not the oxygen deficiency when the inside work of equipment simultaneously. However, in the existing dry air generator, in the process of injecting dry air into the transformer, the air outlet of the dry air generator cannot adjust the air outlet, so that the dry air is injected into the transformer body to cause the misoperation of the pressure release valve to be opened, transformer oil in the transformer is discharged by mistake, and unnecessary troubles and loss are caused.
Disclosure of Invention
The utility model aims to solve the problem that the transformer oil in a transformer is easily discharged by mistake when the air is injected into the transformer by a dry air generator in the prior art, and provides transformer air drying equipment which has the function of controlling the pressure of the dry air injected into the transformer.
In order to achieve the above object, the present utility model provides a transformer air drying apparatus comprising:
an air drying assembly, the air drying assembly comprising:
the air compressor is used for generating compressed air;
the filter assembly is connected with the air compressor and is used for filtering out impurities and moisture in the compressed air;
a cold drying component, one end of which is connected with the filtering component and is used for reducing the temperature of the compressed air so as to dry the compressed air;
one end of the air outlet pipe is connected with the other end of the cold drying assembly, and the other end of the air outlet pipe is communicated with the inside of the transformer;
the pressure regulating subassembly sets up on the outlet duct, the pressure regulating subassembly includes:
the two ends of the pressure regulating pipe are communicated with the air outlet pipe, and a connecting pipe is arranged on the pressure regulating pipe;
and the safety valve is connected with the connecting pipe and is used for adjusting the pressure of the compressed air in the air outlet pipe so as to limit the pressure in the transformer.
Optionally, two ends of the pressure regulating pipe are connected with the air outlet pipe through flanges.
Optionally, the connection mode of the safety valve and the connecting pipe comprises threaded connection.
Optionally, the filter assembly comprises:
the air inlet end of the air storage tank is connected with the air compressor, a first drain pipe is arranged at the bottom of the air storage tank, and a first drain valve is arranged on the first drain pipe;
one end of the radiator is connected with the air outlet end of the air storage tank, a second drain pipe is arranged at the bottom of the radiator, and a second drain valve is arranged on the second drain pipe;
and one end of the air filter is connected with the other end of the radiator.
Optionally, the cold drying assembly includes:
the input end of the cold dryer is connected with the other end of the air filter and is used for carrying out heat exchange with the compressed air;
and the drying tower component is connected with the output end of the cold dryer, and the output end of the drying tower component is connected with one end of the air outlet pipe and used for drying the compressed air.
Optionally, the transformer air drying device further comprises a pressure reducing valve arranged on the air outlet pipe.
Optionally, the transformer air drying device further comprises a dew point meter air inlet valve and a dew point meter, wherein the dew point meter air inlet valve is arranged on the air outlet pipe, and the dew point meter is connected with the dew point meter air inlet valve and is used for detecting moisture in the compressed air.
Optionally, a pressure gauge is arranged on an output pipeline of the air storage tank.
According to the technical scheme, the compressed air is generated by the air compressor, the water in the compressed air is filtered by the filtering component in a gradient way, the temperature of the compressed air is reduced by heat exchange with the compressed air, the compressed air is dried by the cold drying component, and finally the dry gas is injected into the transformer through the air outlet pipe, and the pressure of the dry gas in the pressure regulating pipe is regulated and controlled by the safety valve, so that the control of the pressure in the air outlet pipe and the pressure in the transformer can be realized, the situation that transformer oil is discharged by mistake due to overlarge pressure is avoided, and the reliability and safety of the injection of the dry gas are improved.
Drawings
FIG. 1 is a schematic diagram of the connection of a transformer air drying apparatus according to one embodiment of the present utility model;
fig. 2 is a schematic structural view of a voltage regulating assembly in a transformer air drying apparatus according to an embodiment of the present utility model.
Description of the reference numerals
1. Air compressor 2, air storage tank
3. First drain pipe 4, pressure gauge
5. Radiator 6, second drain pipe
7. Air filter 8, cold dryer
9. Drying tower assembly 10, dew point meter air inlet valve
11. Dew point meter 12 and transformer
13. Safety valve 14, connecting pipe
15. Air outlet pipe 16 and pressure regulating pipe
Detailed Description
The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
FIG. 1 is a schematic diagram of the connection of a transformer air drying apparatus according to one embodiment of the present utility model; fig. 2 is a schematic structural view of a voltage regulating assembly in a transformer air drying apparatus according to an embodiment of the present utility model. As shown in fig. 1 and 2, the transformer air drying apparatus may include an air drying assembly and a voltage regulating assembly. Specifically, the air drying component may include an air compressor 1, a filter component, a cold drying component, and an air outlet duct 15; the pressure regulating assembly may comprise a pressure regulating tube 16 and a relief valve 13. Specifically, the pressure regulating tube 16 may include a connecting tube 14.
The air compressor 1 is used for generating compressed air, and the filter component is connected with the air compressor 1 and is used for filtering impurities and moisture in the compressed air. One end of the cold drying component is connected with the filtering component and used for reducing the temperature of the compressed air so as to dry the compressed air. One end of the air outlet pipe 15 is connected with the other end of the cold drying component, and the other end of the air outlet pipe 15 is communicated with the inside of the transformer 12. The pressure regulating subassembly sets up on outlet duct 15, and the both ends and the outlet duct 15 intercommunication of pressure regulating pipe 16 are provided with connecting pipe 14 on the pressure regulating pipe 16. The safety valve 13 is connected to the connection pipe 14 for adjusting the pressure of the compressed air inside the outlet pipe 15 to limit the pressure inside the transformer 12.
When the dry gas is required to be injected into the transformer 12, the air compressor 1 compresses the air and generates compressed air, the compressed air enters the filter assembly to be filtered, and part of impurity moisture in the compressed air and part of oil in the air compressor 1 are filtered. The compressed air continuously enters the cold drying component for heat exchange, so that the temperature of the compressed air is reduced, the moisture in the compressed air is further condensed and discharged, and finally dry gas is formed and discharged from the air outlet pipe 15. In the process of injecting the dry gas into the transformer 12 by the air drying device, the dry gas flows through the pressure regulating pipe 16, and the safety valve 13 can limit the pressure of the dry gas in the pressure regulating pipe 16 so as to ensure that the pressure in the transformer 12 is in a stable state.
The pressure of the injected gas cannot be controlled by the traditional dry air generator, so that when the dry gas is injected into the transformer, the pressure in the transformer is increased due to overlarge pressure of the dry gas, a pressure release valve in the transformer is started by misoperation, and then the transformer oil in the transformer is discharged by mistake, so that unnecessary troubles and loss are caused. In this embodiment of the present utility model, the pressure inside the transformer 12 can be in a stable state by adopting the mode of limiting and adjusting the pressure of the dry gas in the gas outlet pipe 15 by the safety valve 13, so as to avoid the malfunction of the pressure release valve, further avoid the incorrect discharge of the oil of the transformer 12 inside the transformer 12, improve the safety and reliability of the injection of the dry gas in the maintenance process, and reduce the loss and unnecessary trouble simultaneously.
In this embodiment of the present utility model, the connection between the pressure regulating pipe 16 and the outlet pipe 15 may be in various forms known to those skilled in the art, including welding, screw connection, etc. However, in a preferred example of the present utility model, in view of the convenience of the pressure regulating pipe 16 being connected to the outlet pipe 15 and the air tightness, the pressure regulating pipe 16 and the outlet pipe 15 may be connected in a manner as shown in fig. 2, and in particular, in fig. 2, the pressure regulating pipe 16 and the outlet pipe 15 may be connected in a manner including a flange 17. In particular, this way, on the one hand, it is possible to facilitate the disassembly and maintenance of the pressure regulating pipe 16 and, on the other hand, also to achieve reliable access to the pressure regulating pipe 16 and the safety valve 13.
In this embodiment of the present utility model, the connection means of the safety valve 13 and the connection pipe 14 may be in various forms known to those skilled in the art, including welding, flange 17 connection, etc. In a preferred example of the present utility model, however, the connection manner of the safety valve 13 and the connection pipe 14 may include a screw connection in consideration of the convenience of the safety valve 13 for disassembly, replacement and maintenance.
In this embodiment of the utility model, the transformer air drying apparatus may further comprise a sensor. Specifically, the sensor is disposed inside the outlet pipe 15, and the sensor is located at a position where the safety valve 13 is away from the outlet end of the outlet pipe 15, i.e., the sensor is located before the safety valve 13. Specifically, the sensor is connected to an alarm for alerting the relevant person that the air pressure inside the air outlet pipe 15 is large.
In this embodiment of the present utility model, the pressure to which the transformer 12 is subjected is 0.05-0.07MPa according to the operational specification requirements of the transformer 12, and thus the pressure of the safety valve 13 in the present utility model may include 0.04MPa so that the pressure at which the dry gas is injected into the inside of the transformer 12 is below the pressure to which the transformer 12 is subjected.
In this embodiment of the utility model, the filter assembly may include an air reservoir 2, a radiator 5, a pressure gauge 4, and an air filter 7, as shown in fig. 1. Specifically, the air tank 2 may include a first drain pipe 3 and a first drain valve, and the radiator 5 may include a second drain pipe 6 and a second drain valve.
The air inlet end of the air storage tank 2 is connected with the air compressor 1, a first drain pipe 3 is arranged at the bottom of the air storage tank 2, and a first drain valve is arranged on the first drain pipe 3. One end of the radiator 5 is connected with the air outlet end of the air storage tank 2, a second drain pipe 6 is arranged at the bottom of the radiator 5, and a second drain valve is arranged on the second drain pipe 6. One end of the air filter 7 is connected to the other end of the radiator 5. The pressure gauge 4 is arranged on the output pipeline of the air storage tank 2.
Compressed air in the air compressor 1 sequentially enters the air storage tank 2 and the radiator 5, oil and water in the compressed air are preliminarily filtered in the air storage tank 2 and the radiator 5, and are discharged along the first drain pipe 3 and the second drain pipe 6. The air filter 7 can further filter impurities, moisture, and the like in the air. In addition, the pressure gauge 4 is able to monitor the air pressure in the air reservoir 2.
In this embodiment of the utility model, as shown in fig. 1, the cold drying assembly includes a cold dryer 8 and a drying tower assembly 9.
The input end of the cold dryer 8 is connected with the other end of the air filter 7 for heat exchange with the compressed air. The drying tower assembly 9 is connected with the output end of the cold dryer 8, and the output end of the drying tower assembly 9 is connected with one end of the air outlet pipe 15 for drying the compressed air.
The inside of the cold dryer 8 is provided with a heat exchange component for cooling and condensing the compressed air so as to further remove moisture in the compressed air. In particular, the heat exchange assembly may include, but is not limited to, a compressor, an evaporator, a refrigerant mating manner, and the like. The low-temperature compressed air enters the drying tower assembly 9 for drying and filtering. In particular, the drying tower assembly 9 may include two drying towers, such as tower a and tower B in fig. 1. Specifically, an oil separator and a drying agent are arranged in the drying tower and are used for carrying out further filtration on water, oil and the like in the compressed air.
In this embodiment of the utility model, the transformer air drying apparatus may further comprise a pressure reducing valve 18, as shown in fig. 1. Specifically, the pressure reducing valve 18 is provided on the outlet pipe 15. Specifically, the pressure reducing valve 18 is capable of adjusting the pressure of the dry gas inside the gas outlet pipe 15 by incorporating the safety valve 13.
In this embodiment of the utility model, the transformer air drying apparatus may further comprise a dew point meter inlet valve 10 and a dew point meter 11, as shown in fig. 1. The dew point meter air inlet valve 10 is arranged on the air outlet pipe 15, and the dew point meter 11 is connected with the dew point meter air inlet valve 10 and is used for detecting moisture in compressed air, namely, dryness of dry air to be injected into the transformer 12, so that the dry air in the transformer 12 can meet requirements.
Through the technical scheme, the compressed air is generated by the air compressor 1, the water in the compressed air is filtered by the filtering component in a gradient way, the temperature of the compressed air is reduced by heat exchange with the compressed air, the compressed air is dried by the cold drying component, finally, dry gas is injected into the transformer 12 through the air outlet pipe 15, the pressure of the dry gas in the pressure regulating pipe 16 is regulated and controlled by the safety valve 13, the control of the pressure in the air outlet pipe 15 and the transformer 12 can be realized, the situation that transformer oil is discharged by mistake due to overlarge pressure is avoided, and the reliability and safety of dry gas injection are improved.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model. In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.
Claims (8)
1. A transformer air drying apparatus, comprising:
an air drying assembly, the air drying assembly comprising:
an air compressor (1) for generating compressed air;
the filter assembly is connected with the air compressor (1) and is used for filtering out impurities and moisture in the compressed air;
a cold drying component, one end of which is connected with the filtering component and is used for reducing the temperature of the compressed air so as to dry the compressed air;
one end of the air outlet pipe (15) is connected with the other end of the cold drying assembly, and the other end of the air outlet pipe is communicated with the inside of the transformer (12);
the pressure regulating subassembly sets up on outlet duct (15), the pressure regulating subassembly includes:
the two ends of the pressure regulating pipe (16) are communicated with the air outlet pipe (15), and the pressure regulating pipe (16) is provided with a connecting pipe (14);
and a safety valve (13) connected with the connecting pipe (14) and used for adjusting the pressure of the compressed air in the air outlet pipe (15) so as to limit the pressure in the transformer (12).
2. Transformer air drying device according to claim 1, characterized in that the two ends of the pressure regulating pipe (16) are connected to the outlet pipe (15) by means of flanges (17).
3. Transformer air drying device according to claim 1, characterized in that the connection of the safety valve (13) to the connection pipe (14) comprises a threaded connection.
4. The transformer air drying apparatus of claim 1, wherein the filter assembly comprises:
the air storage device comprises an air storage tank (2), an air inlet end is connected with an air compressor (1), a first drain pipe (3) is arranged at the bottom of the air storage tank (2), and a first drain valve is arranged on the first drain pipe (3);
one end of the radiator (5) is connected with the air outlet end of the air storage tank (2), a second drain pipe (6) is arranged at the bottom of the radiator (5), and a second drain valve is arranged on the second drain pipe (6);
and one end of the air filter (7) is connected with the other end of the radiator (5).
5. The transformer air drying apparatus of claim 4, wherein the cold dry assembly comprises:
the input end of the cold dryer (8) is connected with the other end of the air filter (7) and is used for carrying out heat exchange with the compressed air;
and the drying tower component (9) is connected with the output end of the cold dryer (8), and the output end of the drying tower component (9) is connected with one end of the air outlet pipe (15) and is used for drying the compressed air.
6. Transformer air drying device according to claim 5, characterized in that it further comprises a pressure reducing valve (18) arranged on the outlet duct (15).
7. Transformer air drying device according to claim 5, characterized in that it further comprises a dew-point meter inlet valve (10) and a dew-point meter (11), said dew-point meter inlet valve (10) being arranged on said outlet pipe (15), said dew-point meter (11) being connected to said dew-point meter inlet valve (10) for detecting moisture in said compressed air.
8. Transformer air drying device according to claim 4, characterized in that a pressure gauge (4) is arranged on the output pipe of the air reservoir (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320719453.4U CN220294406U (en) | 2023-03-31 | 2023-03-31 | Transformer air drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320719453.4U CN220294406U (en) | 2023-03-31 | 2023-03-31 | Transformer air drying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220294406U true CN220294406U (en) | 2024-01-05 |
Family
ID=89345684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320719453.4U Active CN220294406U (en) | 2023-03-31 | 2023-03-31 | Transformer air drying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220294406U (en) |
-
2023
- 2023-03-31 CN CN202320719453.4U patent/CN220294406U/en active Active
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