CN110828123A - Vacuum oil injection system for transformer - Google Patents
Vacuum oil injection system for transformer Download PDFInfo
- Publication number
- CN110828123A CN110828123A CN201911193705.9A CN201911193705A CN110828123A CN 110828123 A CN110828123 A CN 110828123A CN 201911193705 A CN201911193705 A CN 201911193705A CN 110828123 A CN110828123 A CN 110828123A
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- Prior art keywords
- oil
- vacuum
- valve
- transformer
- tank
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/72—Devices for applying air or other gas pressure for forcing liquid to delivery point
Abstract
The invention discloses a vacuum oil injection system of a transformer, which comprises a vacuumizing part, the transformer and an oil injection part which are sequentially connected, wherein the vacuumizing part is communicated with the upper end of the transformer, and the oil injection part is communicated with the lower end of the transformer; the oil injection part comprises a vacuum oil injection pipe, an oil filter, a first oil tank, a second oil tank, an oil supplementing hanging tank, a first oil way, a second oil way, a third oil way, a fourth oil way and a fifth oil way; the first oil tank and the second oil tank are both communicated with an oil filter, the second oil tank and the vacuum oil injection pipe are respectively communicated with the first oil tank, the oil supplementing suspension tank is respectively connected with the oil filter and the first oil tank through communicating pipelines, a transformer oil injection port is arranged at an oil outlet of the oil supplementing suspension tank, and a vacuum oil injection port is arranged at the vacuum oil injection pipe; the oil filter has the advantages that all modules are mutually matched and have compact logic, the oil filter can well meet the oil injection of the transformer under different use environments and requirements, the integration of oil filtering, oil injection, vacuum oil injection and oil supplement is realized, and the vacuum oil injection effect is good.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to a vacuum oil injection system of a transformer.
Background
With the wide application of transformer oil as an insulating medium and a cooling medium of an oil-immersed transformer, the operation of injecting the transformer oil is required after the oil-immersed transformer is assembled and sealed. At present, the general oil injection method of the oil-immersed transformer is to directly inject transformer oil into an oil tank from an oil injection pipe orifice on a tank cover, and the oil injection method has the advantages of simple operation, no need of complex equipment, pipelines and the like, and has the defects that some moisture and a large amount of air are mixed in the oil injection process, and the oil needs to be statically placed for a long time after being injected with the oil so as to be convenient for discharging the internal air, and in addition, the moisture discharge in the oil tank is influenced, and the insulation strength of the transformer oil is reduced.
Meanwhile, some common transformer vacuum oil injection devices exist in the market, the vacuum oil injection devices adopt vacuum pressure to inject oil in an oil storage tank into a transformer, and the vacuum pressure of the vacuum oil injection devices is large, so that the oil injection speed is too high in the oil injection process, and bubbles are easily generated in an oil tank of the transformer; meanwhile, because the power for injecting oil is vacuum pressure, when the transformer oil tank is to be filled, an operator can hardly control the transformer oil tank to be in a state of just filling the transformer oil tank, the phenomenon that the transformer oil tank is not filled or the transformer oil is overflowed to an external leakage pipeline can often occur, and the operation and the cleaning are inconvenient, time-consuming and labor-consuming.
In addition, the existing transformer vacuum oil injection device is not divided into two modules for logic tight operation on vacuumizing and oil injection, the error is large on the whole operation, and the oil injection cannot meet the use requirements of various complex conditions.
Disclosure of Invention
In view of the above, in order to solve the defects in the prior art, the invention aims to provide a vacuum oil injection system for a transformer, which has the advantages that all modules are matched with each other, the logic is compact, the oil injection of the transformer under different use environments and requirements can be well met, the integration of oil filtration, oil injection, vacuum oil injection and oil supplement is realized, and the vacuum oil injection effect is good.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a transformer vacuum oil injection system comprises a vacuumizing part, a transformer and an oil injection part which are sequentially connected, wherein the vacuumizing part is communicated with the upper end of the transformer, and the oil injection part is communicated with the lower end of the transformer;
the oil injection part comprises a vacuum oil injection pipe, an oil filter, a first oil tank, a second oil tank, an oil supplementing hanging tank, a first oil way, a second oil way, a third oil way, a fourth oil way and a fifth oil way; the first oil tank and the second oil tank are both communicated with an oil filter, the second oil tank and the vacuum oil injection pipe are respectively communicated with the first oil tank, the oil supplementing hanging tank is respectively connected with the oil filter and the first oil tank through communicating pipelines, a transformer oil injection port is arranged at an oil outlet of the oil supplementing hanging tank, and a vacuum oil injection port is arranged at the vacuum oil injection pipe;
the second oil tank sequentially passes through a fourth valve, a seventh valve, an oil filter and the second valve and then reaches the first oil tank to form a first oil circuit, the first oil tank sequentially passes through the third valve, the seventh valve, the oil filter and the second valve and then returns to the first oil tank to form a second oil circuit and realize a self-oil-filtering stage, the first oil tank sequentially passes through the third valve, the seventh valve, the oil filter and the fifth valve and then reaches a transformer oil injection port to form a third oil circuit and realize a transformer oil injection stage, the first oil tank sequentially passes through the third valve and the eighth valve and then reaches a vacuum oil injection pipe to form a fourth oil circuit and realize a vacuum oil injection stage, the first oil tank sequentially passes through the third valve, the seventh valve, the oil filter and the first valve and then reaches an oil supplementing suspension tank, and the oil supplementing suspension tank sequentially passes through the sixth valve and then reaches the transformer oil injection port to form a fifth oil circuit and realize a transformer oil supplementing stage;
the vacuum pumping part comprises a vacuum box, a vacuum tank and a vacuum pump which are connected with each other, the vacuum pump is communicated with the top of the transformer, the vacuum pump is communicated with the vacuum tank through a ninth valve and a tenth valve and forms a vacuum drying treatment stage, and the vacuum pump is communicated with the vacuum box through the ninth valve and the eleventh valve and forms an oil injection transformer vacuum pumping stage.
Further, the transformer oil filling port is communicated with one side of the bottom of the transformer.
Furthermore, the vacuum oil injection ports are multiple and communicated with one side of the bottom of the transformer.
Furthermore, the number of the vacuum oil filling ports is 8.
Further, the vacuum box is correspondingly provided with 8 vacuum-pumping pipes.
Furthermore, the vacuum box is provided with a vacuum meter for real-time monitoring.
Furthermore, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve and the eighth valve are all one-way valves.
Further, the pressure of the vacuum tank is 0.02-0.04 MPa.
The invention has the beneficial effects that:
according to the vacuum oil injection system for the transformer, all modules are matched with each other, the logic is tight, the oil injection of the transformer under different use environments and requirements can be well met, the integration of oil filtering, oil injection, vacuum oil injection and oil supplement is realized, and the vacuum oil injection effect is good. The concrete points are as follows:
the vacuum-pumping part performs vacuum drying treatment on the transformer at the top of the transformer and vacuum pumping on the transformer to be injected with oil, and stops the treatment according to related specified processes; the oil injection part performs oil injection and oil supplement operations on one side of the bottom of the transformer according to different requirements, wherein the oil injection part comprises a first oil path in an oil circulation stage between oil tanks, a second oil path in a self-oil-filtering stage, a third oil path in a transformer oil injection stage, a fourth oil path in a vacuum oil injection stage and a fifth oil path in a transformer oil supplement stage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the oiling portion;
FIG. 3 is a schematic structural view of a vacuum-pumping part;
the labels in the figure are: 1. the oil filling device comprises a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a 7, a seventh valve, an 8, an eighth valve, a 9, a ninth valve, a 10, a tenth valve, an 11, an eleventh valve, a 12, a vacuumizing part, a 13, a transformer, a 14, an oil filling part, a 15, a vacuum oil filling pipe, a 16, an oil filter, a 17, a first oil tank, a 18, a second oil tank, a 19, an oil supplementing suspension tank, a 20, a transformer oil filling port, a 21, a vacuum oil filling port, a 22, a vacuum tank, a 23, a vacuum tank, a 24, a vacuum pump, a 25, a vacuumizing pipe, a 26 and a vacuum meter.
Detailed Description
The following specific examples are given to further clarify, complete and detailed the technical solution of the present invention. The present embodiment is a preferred embodiment based on the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
A vacuum oil injection system of a transformer comprises a vacuumizing part 12, a transformer 13 and an oil injection part 14 which are sequentially connected, wherein the vacuumizing part 12 is communicated with the upper end of the transformer 13, and the oil injection part 14 is communicated with the lower end of the transformer 13;
the oil injection part 14 comprises a vacuum oil injection pipe 15, an oil filter 16, a first oil tank 17, a second oil tank 18, an oil supplementing suspension tank 19, a first oil way, a second oil way, a third oil way, a fourth oil way and a fifth oil way; the first oil tank 17 and the second oil tank 18 are both communicated with an oil filter 16, the second oil tank 18 and the vacuum oil injection pipe 15 are respectively communicated with the first oil tank 17, the oil supplementing hanging tank 19 is respectively connected with the oil filter 16 and the first oil tank 17 through communicating pipelines, a transformer oil injection port 20 is arranged at an oil outlet of the oil supplementing hanging tank 19, and a vacuum oil injection port 21 is arranged at the vacuum oil injection pipe 15;
the second oil tank 18 sequentially passes through the fourth valve 4, the seventh valve 7, the oil filter 16 and the second valve 2 and then reaches the first oil tank 17 to form a first oil path, the first oil tank 17 returns to the first oil tank 17 after passing through the third valve 3, the seventh valve 7, the oil filter 16 and the second valve 2 in sequence to form a second oil path and realize the stage of self-filtering oil, the first oil tank 17 sequentially passes through the third valve 3, the seventh valve 7, the oil filter 16 and the fifth valve 5 and then reaches the transformer oil filling port 20 to form a third oil path and realize the transformer oil filling stage, the first oil tank 17 sequentially passes through the third valve 3 and the eighth valve 8 and then reaches the vacuum oil filling pipe 15 to form a fourth oil path and realize the vacuum oil filling stage, the first oil tank 17 sequentially passes through the third valve 3, the seventh valve 7, the oil filter 16 and the first valve 1 and then reaches the oil supplementing hanging tank 19, and the oil supplementing hanging tank 19 passes through the sixth valve 6 and then reaches the transformer oil filling port 20 to form a fifth oil path and realize the transformer oil supplementing stage;
the vacuum-pumping part 12 comprises a vacuum box 22, a vacuum tank 23 and a vacuum pump 24 which are connected with each other, the vacuum pump 24 is communicated with the top of the transformer 13, the vacuum pump 24 is communicated with the vacuum tank 23 through a ninth valve 9 and a tenth valve 10 and forms a vacuum drying treatment stage, and the vacuum pump 24 is communicated with the vacuum box 22 through the ninth valve 9 and an eleventh valve 11 and forms an oil-injection transformer vacuum-pumping stage.
Further, the first valve 1, the second valve 2, the third valve 3, the fourth valve 4, the fifth valve 5, the sixth valve 6, the seventh valve 7 and the eighth valve 8 are all one-way valves.
Further, the pressure of the vacuum tank 23 is 0.02-0.04 MPa.
Further, the vacuum box 22 is provided with a real-time monitoring vacuum gauge 26.
Further, the transformer oil filling port 20 communicates with the bottom side of the transformer 13.
Further, a plurality of vacuum oil filling ports 21 are provided, and the plurality of vacuum oil filling ports 21 are all communicated with one side of the bottom of the transformer 13.
Further, the number of the vacuum oil filling ports 21 is 8.
Further, the vacuum box 22 has 8 evacuation tubes 25.
Further, valves are arranged on the vacuum oil injection pipe 15 and the vacuum pumping pipe 25.
Further, the first oil tank 17 is a 5T oil tank, the second oil tank 18 is a 30T oil tank, and the oil supply suspension tank 19 is a 2T suspension tank.
The working principle of the invention is as follows:
the vacuumizing part 12 performs vacuum drying treatment on the transformer and vacuumizing the transformer to be filled on the top of the transformer 13, and stops the treatment according to related specified processes; the oil injection part 14 performs oil injection and oil supplement operations on one side of the bottom of the transformer 13 according to different requirements, wherein the operations comprise an oil circulation stage between oil tanks, namely a first oil path, a self-oil filtration stage, namely a second oil path, a transformer oil injection stage, namely a third oil path, a vacuum oil injection stage, namely a fourth oil path, and a transformer oil supplement stage, namely a fifth oil path;
wherein, the operating principle of the vacuum part 12 is as follows:
firstly, closing an eleventh valve 11, opening a ninth valve 9 and a tenth valve 10 during vacuum drying treatment, and stopping treatment according to a specified process;
secondly, when the transformer to be filled with oil is vacuumized, closing the tenth valve 10, opening the ninth valve 9 and the eleventh valve 11, and stopping treatment according to a specified process;
wherein, the theory of operation of oiling part 14 does:
first, second oil tank 18 to first oil tank 17: the first valve 1, the third valve 3, the fifth valve 5, the sixth valve 6 and the eighth valve 8 are closed, the second valve 2, the fourth valve 4 and the seventh valve 7 are opened, and the oil filter 16 stops after the first oil tank 17 of the 5T reaches the specified height, so that the oil circulation stage between the oil tanks, namely a first oil path is realized;
second, the first oil tank 17 self-filtering oil: the first valve 1, the fourth valve 4, the fifth valve 5, the sixth valve 6 and the eighth valve 8 are closed, the second valve 2, the third valve 3 and the seventh valve 7 are opened, the oil filter 16 stops after the internal oil reaches the specified standard, and the self-oil-filtering stage, namely a second oil way, is realized;
thirdly, injecting oil into the transformer 13: the first valve 1, the second valve 2, the fourth valve 4, the sixth valve 6 and the eighth valve 8 are closed, the third valve 3, the fifth valve 5 and the seventh valve 7 are opened, and the oil filter 16 is stopped after oil is injected to a proper amount, so that a third oil way is realized in the oil injection stage of the transformer;
fourthly, vacuum oil injection: the first valve 1, the second valve 2, the fourth valve 4, the fifth valve 5, the sixth valve 6 and the seventh valve 7 are closed, the third valve 3 and the eighth valve 8 are opened, oil is injected to a preset position and stops, and a vacuum oil injection stage, namely a fourth oil way, is realized;
fifthly, oil supplement of the transformer: firstly, the second valve 2, the fourth valve 4, the fifth valve 5, the sixth valve 6 and the eighth valve 8 are closed, the first valve 1, the third valve 3 and the seventh valve 7 are opened, and the oil filter 16 stops after the oil in the 2T oil supplementing suspension tank 19 reaches the specified height; the first valve 1 and the fifth valve 5 are closed, and the sixth valve 6 is opened to supply oil. And the fifth oil way is realized at the oil supplementing stage of the transformer.
In conclusion, the transformer vacuum oil injection system provided by the invention has the advantages that all modules are matched with each other, the logic is compact, the oil injection of the transformer under different use environments and requirements can be well met, the integration of oil filtering, oil injection, vacuum oil injection and oil supplement is realized, and the vacuum oil injection effect is good.
The principal features, principles and advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to explain the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as expressed in the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a transformer vacuum oiling system which characterized in that: the transformer comprises a vacuumizing part (12), a transformer (13) and an oil injection part (14) which are sequentially connected, wherein the vacuumizing part (12) is communicated with the upper end of the transformer (13), and the oil injection part (14) is communicated with the lower end of the transformer (13);
the oil injection part (14) comprises a vacuum oil injection pipe (15), an oil filter (16), a first oil tank (17), a second oil tank (18), an oil supplementing suspension tank (19), a first oil way, a second oil way, a third oil way, a fourth oil way and a fifth oil way; the first oil tank (17) and the second oil tank (18) are both communicated with an oil filter (16), the second oil tank (18) and the vacuum oil injection pipe (15) are respectively communicated with the first oil tank (17), the oil supplementing hanging tank (19) is respectively connected with the oil filter (16) and the first oil tank (17) through communicating pipelines, a transformer oil injection port (20) is arranged at an oil outlet of the oil supplementing hanging tank (19), and a vacuum oil injection port (21) is arranged at the vacuum oil injection pipe (15);
the second oil tank (18) sequentially passes through a fourth valve (4), a seventh valve (7), an oil filter (16) and a second valve (2) and then reaches a first oil tank (17) to form a first oil circuit, the first oil tank (17) sequentially passes through a third valve (3), the seventh valve (7), the oil filter (16) and the second valve (2) and then returns to the first oil tank (17) to form a second oil circuit and realize a self-oil-filtering stage, the first oil tank (17) sequentially passes through the third valve (3), the seventh valve (7), the oil filter (16) and the fifth valve (5) and then reaches a transformer oil injection port (20) to form a third oil circuit and realize a transformer oil injection stage, the first oil tank (17) sequentially passes through the third valve (3) and an eighth valve (8) and then reaches a vacuum oil injection pipe (15) to form a fourth oil circuit and realize a vacuum oil injection stage, and the first oil tank (17) sequentially passes through the third valve (3), A seventh valve (7), an oil filter (16) and the first valve (1) are connected with an oil supplementing hanging tank (19), and the oil supplementing hanging tank (19) is connected with a transformer oil filling port (20) through a sixth valve (6) to form a fifth oil path and realize the oil supplementing stage of the transformer;
the vacuum pumping part (12) comprises a vacuum box (22), a vacuum tank (23) and a vacuum pump (24) which are connected with each other, the vacuum pump (24) is communicated with the top of the transformer (13), the vacuum pump (24) is communicated with the vacuum tank (23) through a ninth valve (9) and a tenth valve (10) and forms a vacuum drying treatment stage, and the vacuum pump (24) is communicated with the vacuum box (22) through the ninth valve (9) and an eleventh valve (11) and forms an oil injection transformer vacuum pumping stage.
2. The vacuum oil injection system of the transformer according to claim 1, wherein: the transformer oil filling port (20) is communicated with one side of the bottom of the transformer (13).
3. The vacuum oil injection system of the transformer according to claim 1, wherein: the vacuum oil filling ports (21) are multiple, and the vacuum oil filling ports (21) are all communicated with one side of the bottom of the transformer (13).
4. The vacuum oil injection system of the transformer according to claim 3, wherein: the number of the vacuum oil filling ports (21) is 8.
5. The vacuum oil injection system of the transformer according to claim 1, wherein: the vacuum box (22) is correspondingly provided with 8 vacuum-pumping pipes (25).
6. The vacuum oil injection system of the transformer according to claim 1, wherein: the vacuum box (22) is provided with a vacuum meter (26) for real-time monitoring.
7. The vacuum oil injection system of the transformer according to claim 1, wherein: the first valve (1), the second valve (2), the third valve (3), the fourth valve (4), the fifth valve (5), the sixth valve (6), the seventh valve (7) and the eighth valve (8) are all one-way valves.
8. The vacuum oil injection system of the transformer according to claim 1, wherein: the pressure of the vacuum tank (23) is 0.02-0.04 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911193705.9A CN110828123A (en) | 2019-11-28 | 2019-11-28 | Vacuum oil injection system for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911193705.9A CN110828123A (en) | 2019-11-28 | 2019-11-28 | Vacuum oil injection system for transformer |
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| Publication Number | Publication Date |
|---|---|
| CN110828123A true CN110828123A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911193705.9A Pending CN110828123A (en) | 2019-11-28 | 2019-11-28 | Vacuum oil injection system for transformer |
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| CN (1) | CN110828123A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599611A (en) * | 2020-05-06 | 2020-08-28 | 宁波保诚电气有限公司 | Capacitor production equipment and process |
| CN113735048A (en) * | 2020-05-29 | 2021-12-03 | 清华大学 | Oil injection equipment |
-
2019
- 2019-11-28 CN CN201911193705.9A patent/CN110828123A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599611A (en) * | 2020-05-06 | 2020-08-28 | 宁波保诚电气有限公司 | Capacitor production equipment and process |
| CN111599611B (en) * | 2020-05-06 | 2022-04-05 | 宁波保诚电气有限公司 | Capacitor production equipment and process |
| CN113735048A (en) * | 2020-05-29 | 2021-12-03 | 清华大学 | Oil injection equipment |
| CN113735048B (en) * | 2020-05-29 | 2022-08-09 | 清华大学 | Oil injection equipment |
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