CN202134380U - Double-voltage dry type transformer - Google Patents

Double-voltage dry type transformer Download PDF

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Publication number
CN202134380U
CN202134380U CN201120242257U CN201120242257U CN202134380U CN 202134380 U CN202134380 U CN 202134380U CN 201120242257 U CN201120242257 U CN 201120242257U CN 201120242257 U CN201120242257 U CN 201120242257U CN 202134380 U CN202134380 U CN 202134380U
Authority
CN
China
Prior art keywords
winding
voltage
type transformer
dry type
double
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.)
Expired - Fee Related
Application number
CN201120242257U
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Chinese (zh)
Inventor
刘立忠
黄云龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENDA ELECTRIC GROUP CO Ltd
Original Assignee
SHENDA ELECTRIC GROUP CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHENDA ELECTRIC GROUP CO Ltd filed Critical SHENDA ELECTRIC GROUP CO Ltd
Priority to CN201120242257U priority Critical patent/CN202134380U/en
Application granted granted Critical
Publication of CN202134380U publication Critical patent/CN202134380U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A double-voltage dry type transformer comprises an iron core, a low-voltage coil and a high-voltage coil and is characterized in that the high-voltage coil is divided into a first winding and a second winding. The first winding and the second winding have the same number of turns and are in a parallel connection or series connection state selectively. Screws are poured on a connection terminal arranged on the high-voltage coil, the screws of the connection terminal are connected through connection rods, and holes are arranged at ends of the connection rods. By means of the structure, conversion between two kinds of voltage is obtained when the dry type transformer works, the transformer is strong in adapting capacity and is especially suitable for conversion between voltage of 10 kV and 20 kV.

Description

A kind of double-voltage dry type transformer
Technical field
The utility model and a kind of transformer technology field relate in particular to a kind of dry-type transformer.
Background technology
Along with the continuous development of society, electric load constantly increases, and the limitation of 10kV medium voltage distribution network power supply begins to show, power supply capacity is not enough, voltage levvl is on the low side and net to decrease shortcoming such as bigger also more and more outstanding.China's low-voltage network if can boost to 20kV with 10kV; Can solve other many problems that the 10kV electric pressure exists, and bring such as line loss and can reduce 3/4ths, can practice thrift transformer station's quantity and a series of advantages such as soil and minimizing space, circuit corridor.Therefore, the 20kV medium voltage distribution network has just become the effective measures of dealing with problems, and the 20kV power distribution network replaces the 10kV power distribution network also imperative.At present, the high-tension coil of dry-type transformer is generally a voltage input, and such as the voltage of 10KV, the voltage of output 400V to the voltage occasion of 20KV, just needs to have changed dry-type transformer, so just needs secondary to drop into.Therefore in the 10kV system in the process of 20kV system transition, very necessary when inventing a kind of high pressure and can realize the conversion of two kinds of voltages.
The utility model content
The utility model is the shortcoming to above-mentioned existence, provides a kind of low pressure can realize the transformer of the conversion of two kinds of voltages.
The technical scheme that technical problem adopted that the utility model solves is:
A kind of double-voltage dry type transformer; Comprise iron core and low-voltage coil, high-tension coil; It is characterized in that high-tension coil is divided into first winding and second winding, first winding has the identical number of turn with second winding, and first winding optionally is in parallelly connected or series connection with second winding.For guaranteeing that first winding and second winding can be parallelly connected state, first winding just needs the identical number of turn with second winding.Such as the conversion between 10kV and 20kV, when being chosen in series connection to first winding and second winding, high pressure is 20kV, and when being chosen in parallelly connected state to first winding with second winding, high pressure is 10kV, and two voltage transitions are accomplished.
In the practical implementation, high-tension coil is provided with terminals and is cast with screw rod, connects with connecting rod between the screw rod of terminals, and the connecting rod end is provided with the hole.First winding optionally is in parallel connection with second winding or series connection realizes through adopting the different connected mode of connecting rod.The connecting rod end is provided with the hole, be inserted in the two screw rods that will connect, fastening with nut.
The beneficial effect of the utility model is: through the structure of the utility model, can realize that dry-type transformer is operated in the conversion of two kinds of voltages, the transformer adaptive capacity is strong, especially is adapted to the conversion between voltage 10kV and the 20kV.
Description of drawings
Below in conjunction with accompanying drawing and embodiment utility model is further specified.
Fig. 1 is the sketch map of the utility model embodiment series connection principle.
Fig. 2 is the sketch map of the utility model embodiment parallel connection state principle.
Fig. 3 is the utility model embodiment series connection johning knot composition.
Embodiment
In Fig. 1, Fig. 2, Fig. 3, be the two convertible transformers of voltage of 3-phase dry type, low-voltage coil, high-tension coil are for to be formed by poured with epoxy resin; Comprise iron core, low-voltage coil, high-tension coil; High-tension coil is divided into first winding 1 and second winding, 2, the first windings 1 have the identical number of turn with second winding 2, and first winding 1 optionally is in parallel connection with second winding 2 or series connection realizes through adopting connecting rod 3 different connected modes; Like Fig. 3; High-tension coil is provided with terminals and is cast with screw rod 4, and connecting rod 3 ends are provided with the hole, and connecting rod 3 is as the connection between the screw rod 4 of terminals.Connecting rod 3 ends are provided with the hole, be inserted in the two screw rods 4 that will connect, fastening with nut.In Fig. 1, when being chosen in series connection to first winding 1 and second winding 2, the initiating terminal of dry-type three-phase transformer is A, B, C; A1, B1, C1 are connected with X1, Y1, Z1 respectively; End is X2, Y2, Z2, and first winding 1 is connected with second winding 2, and the voltage of high pressure is 20Kv.Through, in Fig. 2, when being chosen in parallelly connected state to first winding 1 with second winding 2; The initiating terminal of dry-type three-phase transformer is A, B, C; X2, Y2, Z2 are connected with X1, Y1, Z1 respectively, and end is similarly X2, Y2, Z2, and first winding 1 is parallelly connected with second winding 2; High pressure is 10kV, and two voltage transitions are accomplished.Through adopting the different connected mode of connecting rod to realize that transformer works in the conversion between the voltage, two kinds of voltages are the twice relation, and double-voltage dry type transformer can be operated in the conversion of two kinds of voltages, and the transformer adaptive capacity is strong.

Claims (2)

1. double-voltage dry type transformer; Comprise iron core and low-voltage coil, high-tension coil; It is characterized in that high-tension coil is divided into first winding and second winding, first winding has the identical number of turn with second winding, and first winding optionally is in parallelly connected or series connection with second winding.
2. a kind of double-voltage dry type transformer according to claim 1 is characterized in that high-tension coil is provided with terminals and is cast with screw rod, connects with connecting rod between the screw rod of terminals, and the connecting rod end is provided with the hole.
CN201120242257U 2011-07-11 2011-07-11 Double-voltage dry type transformer Expired - Fee Related CN202134380U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120242257U CN202134380U (en) 2011-07-11 2011-07-11 Double-voltage dry type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120242257U CN202134380U (en) 2011-07-11 2011-07-11 Double-voltage dry type transformer

Publications (1)

Publication Number Publication Date
CN202134380U true CN202134380U (en) 2012-02-01

Family

ID=45523142

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201120242257U Expired - Fee Related CN202134380U (en) 2011-07-11 2011-07-11 Double-voltage dry type transformer

Country Status (1)

Country Link
CN (1) CN202134380U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102646506A (en) * 2012-05-17 2012-08-22 正泰电气股份有限公司 High-voltage coil for dual-voltage conversion dry type transformer
CN103745814A (en) * 2014-01-21 2014-04-23 广西柳州特变科技有限责任公司 Amorphous alloy transformer
CN107424806A (en) * 2017-08-30 2017-12-01 正泰电气股份有限公司 The device and method of high-current low-voltage side twin voltage switching can be realized

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102646506A (en) * 2012-05-17 2012-08-22 正泰电气股份有限公司 High-voltage coil for dual-voltage conversion dry type transformer
CN102646506B (en) * 2012-05-17 2014-11-26 正泰电气股份有限公司 High-voltage coil for dual-voltage conversion dry type transformer
CN103745814A (en) * 2014-01-21 2014-04-23 广西柳州特变科技有限责任公司 Amorphous alloy transformer
CN107424806A (en) * 2017-08-30 2017-12-01 正泰电气股份有限公司 The device and method of high-current low-voltage side twin voltage switching can be realized
CN107424806B (en) * 2017-08-30 2019-07-16 正泰电气股份有限公司 It can be realized the device and method of high-current low-voltage side twin voltage switching

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120201

Termination date: 20170711