CN109509681B - Oil immersed vacuum contactor for transformer - Google Patents
Oil immersed vacuum contactor for transformer Download PDFInfo
- Publication number
- CN109509681B CN109509681B CN201811638338.4A CN201811638338A CN109509681B CN 109509681 B CN109509681 B CN 109509681B CN 201811638338 A CN201811638338 A CN 201811638338A CN 109509681 B CN109509681 B CN 109509681B
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- CN
- China
- Prior art keywords
- transformer
- oil
- contactor
- permanent magnet
- operating mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/023—Details concerning sealing, e.g. sealing casing with resin
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses an oil-immersed vacuum contactor for a transformer, which comprises a mounting plate fixed on the outer side surface of a transformer shell, an insulating frame, a vacuum switch tube, an insulating pull rod, a housing and a permanent magnet operating mechanism, wherein the insulating frame, the vacuum switch tube and the insulating pull rod are arranged in transformer oil, the housing is arranged on the outer side of the transformer shell, the permanent magnet operating mechanism is arranged in the housing, the insulating frame is arranged on one side surface of the mounting plate, the housing and the permanent magnet operating mechanism are arranged on the other side surface of the mounting plate, and the vacuum switch tube is fixed in the insulating frame and is connected with the permanent magnet operating mechanism through the insulating pull rod. The oil immersed type vacuum contactor for the transformer replaces air insulation of the traditional contactor by utilizing the ultrahigh insulation property of transformer oil, the whole volume is reduced to be less than 1/5 of that of the traditional contactor, the manufacturing cost of the contactor and matched equipment is greatly reduced, the air leakage rate of a vacuum switch tube of the contactor is greatly reduced by utilizing the high air tightness and lubricity of the transformer oil, the storage time is greatly prolonged, the abrasion is small, and the maintenance can be avoided in the service life.
Description
Technical Field
The invention belongs to the technical field of high-voltage vacuum contactors, and particularly relates to an oil-immersed vacuum contactor for a transformer working in transformer oil, which is usually installed in a large-scale power transformer to work.
Background
In the application of high-power transmission and transformation transformers above 10KV level, particularly in the field of new energy solar energy and wind energy inversion and transportation, the transformers always work at full load in the daytime, no-load power consumption is achieved at night, the power transmission factors and efficiency are reduced, additional static power consumption is brought, and the loss is not neglected. To solve this problem, it is necessary to exit the grid when the transformer does not need to transmit power. The AC high-voltage vacuum contactor is selected as a necessary way for the switching device. The traditional AC vacuum contactor with the voltage of more than 10KV is large in overall size, high in manufacturing cost and inconvenient in overall layout and installation due to the fact that the required size of air external insulation is too large. The air installation work mode is adopted, and the external insulation strength, the environment and the protection are the gaps which are difficult to surmount by miniaturization.
Disclosure of Invention
In order to overcome the defects, the invention provides the oil-immersed vacuum contactor for the transformer, which is small in size, low in manufacturing cost, long in service life and easy to maintain.
The technical scheme includes that the oil-immersed vacuum contactor for the transformer comprises an installation plate fixed on the outer side face of a transformer shell, an insulating frame, a vacuum switch tube, an insulating pull rod, a housing and a permanent magnet operating mechanism, wherein the insulating frame, the vacuum switch tube and the insulating pull rod are arranged in transformer oil, the housing is arranged on the outer side of the transformer shell, the permanent magnet operating mechanism is arranged in the housing, the insulating frame is arranged on one side face of the installation plate, the housing and the permanent magnet operating mechanism are arranged on the other side face of the installation plate, and the vacuum switch tube is fixed in the insulating frame and is connected with the permanent magnet operating mechanism through the insulating pull rod.
As a further improvement of the invention, the permanent magnet operating mechanism is a special permanent magnet operating mechanism in oil, and the housing is filled with transformer oil during operation.
As a further improvement of the invention, a rubber oil sealing structure is arranged between the insulating pull rod and the mounting plate.
As a further improvement of the invention, the control box of the oil-immersed vacuum contactor is arranged on the outer side surface of the transformer shell and is connected with the body of the oil-immersed vacuum contactor through a cable with a shielding layer.
The oil immersed type vacuum contactor for the transformer has the advantages that firstly, the ultrahigh insulativity of transformer oil is utilized to replace air insulation of a traditional contactor, the whole size is reduced to be less than 1/5 of that of the traditional contactor, the manufacturing cost of the contactor is greatly reduced, the manufacturing cost of matched equipment is also reduced, secondly, the high air tightness and lubricity of the transformer oil are utilized, the air leakage rate of a vacuum switching tube of the contactor is greatly reduced, the storage time is greatly prolonged, the abrasion is small, the maintenance can be avoided in the service life, furthermore, the permanent magnet operating mechanism is externally arranged, the application mode of separating the permanent magnet operating mechanism from a main circuit is adopted, the annual maintenance of the transformer and the contactor is simplified, the cost is lower, and the contactor control box is separated from the body, so that the design layout of the transformer is more convenient, safer, and the maintenance can be carried out in an electrified mode. In a word, this oil-immersed vacuum contactor adopts fluid as storage environment and lubricant, has advantages such as contactor leakage rate greatly reduced, whole wearing and tearing are minimum, long service life, maintenance-free.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the mounting structure of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the present invention.
The following description is made with reference to the accompanying drawings:
100-transformer shell, 101-transformer oil;
1-a mounting plate and 2-an insulating frame;
3, a vacuum switch tube, 4, an insulating pull rod;
5-a housing and 6-a permanent magnet operating mechanism;
7-control box.
Detailed Description
A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. The scope of the invention is not limited to the following examples, but is intended to be limited only by the appended claims and the equivalents and modifications thereof, which fall within the scope of the invention.
Referring to fig. 1-3, the oil immersed vacuum contactor for a transformer according to the present invention comprises a mounting plate 1 fixed on the outer side of a transformer housing 100, an insulating frame 2 disposed in a transformer oil 101, a vacuum switching tube 3, an insulating pull rod 4, a housing 5 disposed on the outer side of the transformer housing 100, and a permanent magnet operating mechanism 6 disposed in the housing, wherein the insulating frame 2 is mounted on one side of the mounting plate 1, the housing 5 and the permanent magnet operating mechanism 6 are mounted on the other side of the mounting plate 1, and the vacuum switching tube 3 is fixed in the insulating frame 2 and connected with the permanent magnet operating mechanism 6 through the insulating pull rod 4.
When the oil-immersed vacuum contactor is installed, the installation plate 1 is in sealing connection with the outer side face of the transformer shell 100, so that good oil sealing is maintained. The main circuit of the contactor formed by the insulating frame 2, the vacuum switch tube 3 and the insulating pull rod 4 is positioned in the transformer oil 101 and immersed below the liquid level of the transformer oil, so that the air insulation of the traditional contactor can be replaced by the ultrahigh insulativity of the transformer oil, and the whole volume is reduced to be less than 1/5 of that of the traditional contactor. The permanent magnet operating mechanism of the contactor is fixed on the outer side of the transformer shell through the housing, namely, is externally arranged outside the transformer oil, and forms a mode of separating and distributing with the main loop, so that the maintenance is convenient.
The permanent magnet operating mechanism is special in-oil permanent magnet operating mechanism, and when the permanent magnet operating mechanism works, the housing is filled with transformer oil for lubricating and balancing pressure, so that damping force caused by compression of oil is avoided when the brake is closed and opened.
A rubber oil sealing structure is arranged between the insulating pull rod and the mounting plate, and oil sealing is carried out on the driven insulating pull rod and the mounting plane, so that oil inside the permanent magnet operating mechanism and the transformer cannot leak and pollute each other.
The control box 7 of the oil-immersed vacuum contactor is arranged on the outer side face of the transformer shell 100, and is connected with the body of the oil-immersed vacuum contactor through a cable with a shielding layer, so that electromagnetic interference caused by strong magnetic field and strong electric field radiation of the transformer is avoided.
Therefore, the oil immersed type vacuum contactor for the transformer is characterized in that firstly, the ultrahigh insulativity of transformer oil is utilized to replace air insulation of a traditional contactor, the whole volume is reduced to be less than 1/5 of that of the traditional contactor, the manufacturing cost of the contactor is greatly reduced, the manufacturing cost of matched equipment is also reduced, secondly, the high air tightness and lubricity of the transformer oil are utilized, the air leakage rate of a vacuum switch tube of the contactor is greatly reduced, the storage time is greatly prolonged, the abrasion is very small, the maintenance can be avoided in the service life, and the permanent magnet operating mechanism is externally arranged and is in an application mode of separating the permanent magnet operating mechanism from a main loop, so that the annual overhaul and maintenance of the transformer and the contactor are simplified, the cost is lower, and a contactor control box is separated from a body, the design layout of the transformer is more convenient, the transformer is safer, and the electrified maintenance can be realized. In a word, this oil-immersed vacuum contactor adopts fluid as storage environment and lubricant, has advantages such as contactor leakage rate greatly reduced, whole wearing and tearing are minimum, long service life, maintenance-free.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638338.4A CN109509681B (en) | 2018-12-29 | 2018-12-29 | Oil immersed vacuum contactor for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638338.4A CN109509681B (en) | 2018-12-29 | 2018-12-29 | Oil immersed vacuum contactor for transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109509681A CN109509681A (en) | 2019-03-22 |
| CN109509681B true CN109509681B (en) | 2024-12-27 |
Family
ID=65755755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811638338.4A Active CN109509681B (en) | 2018-12-29 | 2018-12-29 | Oil immersed vacuum contactor for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109509681B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203351490U (en) * | 2013-05-23 | 2013-12-18 | 广东电网公司佛山供电局 | Permanent magnet drive oil immersion vacuum circuit breaker arranged in 10 kV oil immersion transformer |
| CN206640192U (en) * | 2017-03-16 | 2017-11-14 | 福建亿万嘉电力科技有限公司 | A kind of oil immersed type ring main unit being used in geographical formula power equipment |
| CN209434102U (en) * | 2018-12-29 | 2019-09-24 | 昆山瑞普电气有限公司 | Oil-immersed vacuum contactor for transformer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702511B (en) * | 2009-11-06 | 2011-12-14 | 冯骏明 | Intelligent oil-immersed transformer |
| CN204991586U (en) * | 2015-06-30 | 2016-01-20 | 昆山国力真空电器有限公司 | Magneto vacuum on -load tap -changer |
| CN106024502A (en) * | 2016-06-15 | 2016-10-12 | 西电气有限公司 | Permanent-magnet vacuum circuit breaker |
-
2018
- 2018-12-29 CN CN201811638338.4A patent/CN109509681B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203351490U (en) * | 2013-05-23 | 2013-12-18 | 广东电网公司佛山供电局 | Permanent magnet drive oil immersion vacuum circuit breaker arranged in 10 kV oil immersion transformer |
| CN206640192U (en) * | 2017-03-16 | 2017-11-14 | 福建亿万嘉电力科技有限公司 | A kind of oil immersed type ring main unit being used in geographical formula power equipment |
| CN209434102U (en) * | 2018-12-29 | 2019-09-24 | 昆山瑞普电气有限公司 | Oil-immersed vacuum contactor for transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109509681A (en) | 2019-03-22 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20250113 Address after: 610000 Qingshui Road Garden, Qingyang District, Chengdu City, Sichuan Province Patentee after: Gong Wenjie Country or region after: China Address before: 215300 No.28 Xihu Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: KUNSHAN RUIPU ELECTRIC Co.,Ltd. Country or region before: China |
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Effective date of registration: 20251103 Address after: 514499 Huihua County, Meizhou City, Guangdong Province, Shuizhai Town, Dalin Village, Hongqi No. 036 (original logistics center of Huihua Power Supply Bureau) Patentee after: Wuhua County Huayuan Electric Power Development Co.,Ltd. Country or region after: China Address before: 610000 Qingshui Road Garden, Qingyang District, Chengdu City, Sichuan Province Patentee before: Gong Wenjie Country or region before: China |
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| TR01 | Transfer of patent right |