CN103604971B - A kind of voltage transformer (VT) being beneficial to installation and repairing - Google Patents
A kind of voltage transformer (VT) being beneficial to installation and repairing Download PDFInfo
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- CN103604971B CN103604971B CN201310609936.XA CN201310609936A CN103604971B CN 103604971 B CN103604971 B CN 103604971B CN 201310609936 A CN201310609936 A CN 201310609936A CN 103604971 B CN103604971 B CN 103604971B
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- connection plate
- rotating shaft
- insulator
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Abstract
The invention discloses a kind of voltage transformer (VT) being beneficial to installation and repairing, its innovative point is: be provided with grounding switch in voltage transformer (VT), the primary winding of intermediate transformer is connected with capacitor cell by voltage ground switch, and described voltage ground switch comprises rocking arm, rotating shaft, contact knife, tool rest and spring; Guide rail is provided with in secondary terminal box; The two ends of described guide rail connect terminal box both sides sidewall; Guide rail is provided with secondary connection plate, secondary connection plate is flexibly connected with guide rail, can move left and right; Secondary connection plate is arranged several secondary wiring terminals.By arranging a grounding switch a winding side, improve the processing safety of maintainer, preventing from causing damage to equipment, a guide rail is set up in terminal box, terminal block installed by guide rail, at the enterprising line operate of secondary connection plate during wiring, avoids the generation of leakage of oil; Secondary connection plate such as guide rail is flexibly connected, and can move left and right along guide rail, convenient electrical connection.
Description
Technical field
The present invention relates to a kind of voltage transformer (VT), be specifically related to a kind of be beneficial to installation and repairing voltage transformer (VT).
Background technology
Voltage transformer (VT) is a kind of voltage changer.High-voltage variable is changed to low-voltage by it, to reflect the change of high pressure value with low pressure value.Therefore, directly voltage measurement can be carried out by common electrical instrument by voltage transformer (VT).The structure of voltage transformer (VT) is identical with common transformer with principle of work, and it is also made up of iron core, winding, Secondary Winding, connection terminal and an insulating support substrate etc.One time winding connects high voltage circuit, and Secondary Winding entered auxiliary air switch connecting secondary equipment, secondary device can normally run key be mutual induction of voltage conversion after secondary voltage time normal.When voltage transformer (VT) is stopped transport for some reason, its auxiliary air switch must be disconnected, if do not disconnect, then can send very high voltage to the voltage transformer (VT) of maintenance of stopping transport is counter, cause maintainer's fatal accident; Two is produce very large electric current at the auxiliary air switching circuitry of the identical voltage voltage gradation mutual inductor of not stopping transport, and causes other secondary sky to open overcurrent tripping and disconnects; When voltage transformer (VT) overhauls, can be artificial by winding side joint ground, but inconvenient operation.In addition, the primary winding of the intermediate transformer of traditional voltage transformer (VT) is connected with capacitor cell by spiral cable, the primary winding of intermediate transformer passes through the input end of spiral cable connecting secondary connection terminal, secondary wiring terminals is fixedly installed in secondary terminal box, cannot movement, affect secondary wiring terminals output terminal electrical install sometimes.
Summary of the invention
It is simple that the technical problem to be solved in the present invention is to provide a kind of structure, facilitates the voltage transformer (VT) of installation and maintenance.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of voltage transformer (VT) being beneficial to installation and repairing, comprise insulator, capacitor cell, expander, primary connection terminal, fuel tank, intermediate transformer, compensation reactor, damper and secondary terminal box, insulator built-in capacitance unit, expander is placed on insulator top or is built in insulator top, primary connection terminal is fixed on the top of insulator, and the lower end of insulator is arranged on fuel tank; Intermediate transformer, compensation reactor, damper are built in fuel tank, and its innovative point is: be provided with grounding switch in described voltage transformer (VT), are provided with moveable secondary connection plate in secondary terminal box;
The primary winding of described intermediate transformer is connected with capacitor cell by grounding switch, described grounding switch comprises rocking arm, rotating shaft, contact knife, tool rest and spring, described rotating shaft is through tank body of oil tank sidewall, rotating shaft is positioned at the hole that casing lateral ends leaves a radial direction; rocking arm is installed in rotating shaft by the hole in rotating shaft; one end that rotating shaft is positioned at box inside connects contact knife, and tool rest is installed in contact knife side, arranges the cutter groove mated with contact knife in the middle of tool rest; Described spring one end is fixed, and the other end is connected with contact knife;
Guide rail is provided with in described secondary terminal box; Connecting secondary terminal box both sides, the two ends sidewall of described guide rail; Guide rail is provided with secondary connection plate, secondary connection plate is flexibly connected with guide rail, can move left and right; Secondary connection plate is arranged several secondary wiring terminals, one of them secondary wiring terminals ground connection; Described secondary wiring terminals comprises the upper row's connection terminal and lower row's connection terminal that be arranged in parallel, the input end of the secondary coil connecting secondary connection terminal of described intermediate transformer.
Further, the rocking arm place of described grounding switch is provided with limited post.
Beneficial effect of the present invention: one grounding switch is set a winding side, when needing to overhaul voltage transformer (VT), close the disconnecting link of grounding switch, then Secondary Winding side no current flows through, improve the processing safety of maintainer on the one hand, prevent from causing damage to equipment on the other hand, in the process, spring guarantees that contact knife is in correct position, prevents staff from not moving contact knife to position and causing the accident; In terminal box, set up a guide rail, terminal block installed by guide rail, at the enterprising line operate of secondary connection plate during wiring, avoid the generation of leakage of oil; Secondary connection plate such as guide rail is flexibly connected, and can move left and right along guide rail, convenient electrical connection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the vertical view of fuel tank of the present utility model.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is spring works view.
Fig. 5 is the scheme of installation of secondary wiring terminals of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is elaborated.
A kind of voltage transformer (VT) being beneficial to installation and repairing as shown in Figure 1, comprise insulator 1, capacitor cell 2, expander 3, primary connection terminal 4, fuel tank 5, intermediate transformer 6, compensation reactor 7, damper 8 and secondary terminal box 9, insulator 1 built-in capacitance unit 2, expander 3 is placed on insulator 1 top or is built in insulator 1 top, primary connection terminal 4 is fixed on the top of insulator 1, and the lower end of insulator 1 is arranged on fuel tank 5; Intermediate transformer 6, compensation reactor 7, damper 8 are built in fuel tank 5, are provided with grounding switch 10 in voltage transformer (VT), are provided with moveable secondary connection plate 11 in secondary terminal box 9.
The primary winding of intermediate transformer 6 is connected with capacitor cell by grounding switch 10, grounding switch comprises rocking arm 101, rotating shaft 102, contact knife 103, tool rest 104 and spring 105, rotating shaft 102 is through fuel tank 5 wall box, rotating shaft 102 is positioned at the hole that casing lateral ends leaves a radial direction; rocking arm 101 is installed in rotating shaft 102 by the hole in rotating shaft 102; rocking arm 101 place is provided with limited post 11; one end that rotating shaft 102 is positioned at box inside connects contact knife 103; tool rest 104 is installed in contact knife 103 side, arranges the cutter groove mated with contact knife 103 in the middle of tool rest 104; Described spring 105 one end is fixed, and the other end is connected with contact knife 103.As shown in Figure 4, A be grounding switch completely closed time spring state, spring resets completely; C is the state of grounding switch spring when opening completely, and spring resets completely; B is in the state of the spring between closing completely and opening completely at grounding switch, and now spring is stretched, and due to the elastic restoring force of spring self, makes spring reset to A condition or B state.
Guide rail 12 is provided with in secondary terminal box 9; Connecting secondary terminal box 9 both sides, the two ends sidewall of guide rail 12; Guide rail is provided with secondary connection plate 11, secondary connection plate 11 is flexibly connected with guide rail 12, can move left and right; Secondary connection plate 11 is arranged several secondary wiring terminals 13, one of them secondary wiring terminals ground connection; Secondary wiring terminals 13 comprises the upper row's connection terminal and lower row's connection terminal that be arranged in parallel, the input end of the secondary coil connecting secondary connection terminal 13 of intermediate transformer 6.
Principle of work: when needing to overhaul voltage transformer (VT), by rocking arm, contact knife is drawn in the cutter groove of tool rest, now primary winding ground connection, then contact knife is pulled away from tool rest during work, in the process, spring guarantees that contact knife is in correct position, prevents staff from not moving contact knife to position and causing the accident; By regulating the position of secondary connection plate, convenient installation secondary output device.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. one kind is beneficial to the voltage transformer (VT) of installation and repairing, comprise insulator, capacitor cell, expander, primary connection terminal, fuel tank, intermediate transformer, compensation reactor, damper and secondary terminal box, insulator built-in capacitance unit, expander is placed on insulator top or is built in insulator top, primary connection terminal is fixed on the top of insulator, and the lower end of insulator is arranged on fuel tank; Intermediate transformer, compensation reactor, damper are built in fuel tank, it is characterized in that: be provided with grounding switch in described voltage transformer (VT), are provided with moveable secondary connection plate in secondary terminal box;
The primary winding of described intermediate transformer is connected with capacitor cell by grounding switch, described grounding switch comprises rocking arm, rotating shaft, contact knife, tool rest and spring, described rotating shaft is through tank body of oil tank sidewall, rotating shaft is positioned at the hole that casing lateral ends leaves a radial direction; rocking arm is installed in rotating shaft by the hole in rotating shaft; one end that rotating shaft is positioned at box inside connects contact knife, and tool rest is installed in contact knife side, arranges the cutter groove mated with contact knife in the middle of tool rest; Described spring one end is fixed, and the other end is connected with contact knife;
Guide rail is provided with in described secondary terminal box; Connecting secondary terminal box both sides, the two ends sidewall of described guide rail; Guide rail is provided with secondary connection plate, secondary connection plate is flexibly connected with guide rail, can move left and right; Secondary connection plate is arranged several secondary wiring terminals, one of them secondary wiring terminals ground connection; Described secondary wiring terminals comprises the upper row's connection terminal and lower row's connection terminal that be arranged in parallel, the input end of the secondary coil connecting secondary connection terminal of described intermediate transformer.
2. a kind of voltage transformer (VT) being beneficial to installation and repairing according to claim 1, is characterized in that: the rocking arm place of described grounding switch is provided with limited post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310609936.XA CN103604971B (en) | 2013-11-27 | 2013-11-27 | A kind of voltage transformer (VT) being beneficial to installation and repairing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310609936.XA CN103604971B (en) | 2013-11-27 | 2013-11-27 | A kind of voltage transformer (VT) being beneficial to installation and repairing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103604971A CN103604971A (en) | 2014-02-26 |
| CN103604971B true CN103604971B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310609936.XA Active CN103604971B (en) | 2013-11-27 | 2013-11-27 | A kind of voltage transformer (VT) being beneficial to installation and repairing |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044421B (en) * | 2015-07-09 | 2018-07-10 | 中国电力科学研究院 | A kind of 1000KV column type capacitors formula voltage transformer |
| CN110729119B (en) * | 2019-10-25 | 2020-12-04 | 中互电气(江苏)有限公司 | High-voltage mutual inductor |
| CN113035548B (en) * | 2021-03-06 | 2022-12-06 | 中电变压器股份有限公司 | Manufacturing process of oil-immersed transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000049016A (en) * | 1998-07-30 | 2000-02-18 | Daihen Corp | On-load tap switching transformer |
| CN201877752U (en) * | 2010-12-09 | 2011-06-22 | 天津市百利纽泰克电气科技有限公司 | Error adjustment connecting box and capacitor voltage transformer with same |
| CN201966057U (en) * | 2010-11-15 | 2011-09-07 | 山东泰开互感器有限公司 | Voltage inductor with isolating switch for combined apparatus |
| CN202815049U (en) * | 2012-08-13 | 2013-03-20 | 江苏思源赫兹互感器有限公司 | 500kV capacitor voltage transformer |
-
2013
- 2013-11-27 CN CN201310609936.XA patent/CN103604971B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000049016A (en) * | 1998-07-30 | 2000-02-18 | Daihen Corp | On-load tap switching transformer |
| CN201966057U (en) * | 2010-11-15 | 2011-09-07 | 山东泰开互感器有限公司 | Voltage inductor with isolating switch for combined apparatus |
| CN201877752U (en) * | 2010-12-09 | 2011-06-22 | 天津市百利纽泰克电气科技有限公司 | Error adjustment connecting box and capacitor voltage transformer with same |
| CN202815049U (en) * | 2012-08-13 | 2013-03-20 | 江苏思源赫兹互感器有限公司 | 500kV capacitor voltage transformer |
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| CN103604971A (en) | 2014-02-26 |
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