CN204360913U - Cast-type combination transformer - Google Patents

Cast-type combination transformer Download PDF

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Publication number
CN204360913U
CN204360913U CN201420790518.5U CN201420790518U CN204360913U CN 204360913 U CN204360913 U CN 204360913U CN 201420790518 U CN201420790518 U CN 201420790518U CN 204360913 U CN204360913 U CN 204360913U
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China
Prior art keywords
clamping piece
current
voltage iron
cast
assembly
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Active
Application number
CN201420790518.5U
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Chinese (zh)
Inventor
宋思宇
毛爱国
黄晓丰
张志仁
张华�
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To Ascend A Height Electric Applicance Co Ltd
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To Ascend A Height Electric Applicance Co Ltd
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Priority to CN201420790518.5U priority Critical patent/CN204360913U/en
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Abstract

The utility model relates to a kind of cast-type combination transformer, comprise two voltage iron cores, two potential windings, two current ferric cores, two current coils, two described voltage iron core lower ends are provided with lower clamping piece, the lower end of two voltage iron cores is separately fixed on lower clamping piece by band, and the upper end of two voltage iron cores is provided with upper clamping piece, the upper end of two voltage iron cores is separately fixed on upper clamping piece by band, the two ends of described upper clamping piece are respectively arranged with strutting piece, two strutting pieces extend towards each current ferric core direction respectively, two strutting pieces are fitted in each current ferric core respectively outer rim near one end of each current ferric core is separately fixed on current ferric core by band.This cast-type combination transformer has that structure is simple, reasonable in design, creepage distance are large, easy for installation, the advantage of stable performance.

Description

Cast-type combination transformer
Technical field
The utility model relates to a kind of combination transformer, is specifically related to a kind of cast-type combination transformer.
Background technology
At present, cast-type combination transformer is the electric energy metrical on electrical grid transmission circuit, and plays the effect of current-voltage measurement and monitoring.Existing cast-type combination transformer due to its internal structure design unreasonable, when adopting poured with epoxy resin, epoxy resin layer in uneven thickness of this combination transformer cast, cause epoxy resin layer easy to crack, thus there is the defect of insulation property difference, unstable properties in this combination transformer.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, provides that a kind of structure is simple, reasonable in design, creepage distance are large, easy for installation, the cast-type combination transformer of stable performance.
For achieving the above object, the utility model adopts a kind of cast-type combination transformer, comprise epoxy resin poured body, potential winding sub-assembly, current coil sub-assembly, several primary connections are arranged, described potential winding sub-assembly comprises two voltage iron cores, be separately positioned on two potential windings on each voltage iron core, described current coil sub-assembly comprises two current ferric cores, be separately positioned on two current coils on each current ferric core, two described voltage iron core lower ends are provided with lower clamping piece, described lower clamping piece is provided with installing hole, the lower end of two described voltage iron cores is separately fixed on the two ends of lower clamping piece by band, the upper end of two described voltage iron cores is provided with upper clamping piece, and the upper end of two voltage iron cores is separately fixed on the two ends of upper clamping piece by band, the two ends of described upper clamping piece are respectively arranged with strutting piece, two described strutting pieces extend towards each current ferric core direction respectively, and two strutting pieces be fitted in each current ferric core respectively near one end of each current ferric core outer rim on and be separately fixed on current ferric core by band, described potential winding sub-assembly, current coil sub-assembly, upper clamping piece, lower clamping piece, two strutting pieces are by the epoxy resin poured body described in the integral formation of poured with epoxy resin.
The beneficial effect of said structure is: this cast-type combination transformer is by being improved the internal structure layout of existing combination transformer, current coil sub-assembly and potential winding sub-assembly are fixed by strutting piece, upper and lower folder, by this vibrational power flow, not only be convenient to the assembling of this current coil sub-assembly and potential winding sub-assembly, and be convenient to the cast of this combination transformer, thus improve the production efficiency of this combination transformer.
The number of described several primary connections row is four, and four primary connection rows are symmetricly set on the both sides on the top of epoxy resin poured body between two.Primary connection row is arranged on the both sides of instrument transformer, increase creepage distance, and this mutual inductor interstar connection is also more convenient.
The junction that described epoxy resin poured body and each primary connection are arranged is provided with spiral interface, and described each interface is provided with suitable sheath, and each sheath is set in the outside of corresponding primary connection row.By being set with sheath primary connection is exclusive, rainwater can be avoided to enter on primary connection row, preventing from primary connection from arranging being corroded causing primary connection to arrange loose contact.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment internal structure schematic diagram.
Fig. 2 is the utility model embodiment vertical view.
Fig. 3 is the utility model lower clamping piece front view.
Embodiment
As shown in Figure 1, 2, 3, the utility model embodiment is a kind of cast-type combination transformer, comprise epoxy resin poured body 10, potential winding sub-assembly, current coil sub-assembly, four primary connection rows 11, described potential winding sub-assembly comprises two voltage iron cores 20, two potential windings 21 be separately positioned on each voltage iron core 20, and described current coil sub-assembly comprises two current ferric cores 22, two current coils 23 be separately positioned on each current ferric core 22.Composition graphs 1 and Fig. 3, two described voltage iron core 20 lower ends are provided with lower clamping piece 40, and described lower clamping piece 40 is provided with installing hole 401, and the lower end of two described voltage iron cores 20 is separately fixed on the two ends of lower clamping piece 40 by band 30.The upper end of two described voltage iron cores 20 is provided with upper clamping piece 41, and the upper end of two voltage iron cores 20 is separately fixed on the two ends of upper clamping piece 41 by band 30, the two ends of described upper clamping piece 41 are respectively arranged with strutting piece 42, two described strutting pieces 42 extend towards each current ferric core 22 direction respectively, and two strutting pieces 42 be fitted in each current ferric core 22 respectively near one end of each current ferric core 22 outer rim on and be separately fixed on current ferric core 22 by band 30.Described potential winding sub-assembly, current coil sub-assembly, upper clamping piece 41, lower clamping piece 40, two strutting pieces 42 are by the epoxy resin poured body 10 described in the integral formation of poured with epoxy resin.As shown in Figure 2, four described primary connection rows 11 are symmetricly set on the both sides on the top of epoxy resin poured body 10 between two.Primary connection row is arranged on the both sides of instrument transformer, increase creepage distance, and this mutual inductor interstar connection is also more convenient.The junction that described epoxy resin poured body 10 and each primary connection arrange 11 is provided with spiral interface, and described each interface is provided with suitable sheath 12, and each sheath 12 is set in the outside of corresponding primary connection row 11.By being set with sheath primary connection is exclusive, rainwater can be avoided to enter on primary connection row, preventing from primary connection from arranging being corroded causing primary connection to arrange loose contact.This cast-type combination transformer is by being improved the internal structure layout of existing combination transformer, current coil sub-assembly and potential winding sub-assembly are fixed by strutting piece, upper and lower folder, by this vibrational power flow, not only be convenient to the assembling of this current coil sub-assembly and potential winding sub-assembly, and be convenient to the cast of this combination transformer, thus improve the production efficiency of this combination transformer.

Claims (3)

1. a cast-type combination transformer, comprise epoxy resin poured body, potential winding sub-assembly, current coil sub-assembly, several primary connections are arranged, described potential winding sub-assembly comprises two voltage iron cores, be separately positioned on two potential windings on each voltage iron core, described current coil sub-assembly comprises two current ferric cores, be separately positioned on two current coils on each current ferric core, it is characterized in that: two described voltage iron core lower ends are provided with lower clamping piece, described lower clamping piece is provided with installing hole, the lower end of two described voltage iron cores is separately fixed on the two ends of lower clamping piece by band, the upper end of two described voltage iron cores is provided with upper clamping piece, and the upper end of two voltage iron cores is separately fixed on the two ends of upper clamping piece by band, the two ends of described upper clamping piece are respectively arranged with strutting piece, two described strutting pieces extend towards each current ferric core direction respectively, and two strutting pieces be fitted in each current ferric core respectively near one end of each current ferric core outer rim on and be separately fixed on current ferric core by band, described potential winding sub-assembly, current coil sub-assembly, upper clamping piece, lower clamping piece, two strutting pieces are by the epoxy resin poured body described in the integral formation of poured with epoxy resin.
2. cast-type combination transformer according to claim 1, is characterized in that: the number of described several primary connections row is four, and four primary connection rows are symmetricly set on the both sides on the top of epoxy resin poured body between two.
3. cast-type combination transformer according to claim 1 and 2, it is characterized in that: the junction that described epoxy resin poured body and each primary connection are arranged is provided with spiral interface, described each interface is provided with suitable sheath, and each sheath is set in the outside of corresponding primary connection row.
CN201420790518.5U 2014-12-10 2014-12-10 Cast-type combination transformer Active CN204360913U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420790518.5U CN204360913U (en) 2014-12-10 2014-12-10 Cast-type combination transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420790518.5U CN204360913U (en) 2014-12-10 2014-12-10 Cast-type combination transformer

Publications (1)

Publication Number Publication Date
CN204360913U true CN204360913U (en) 2015-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420790518.5U Active CN204360913U (en) 2014-12-10 2014-12-10 Cast-type combination transformer

Country Status (1)

Country Link
CN (1) CN204360913U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104485219A (en) * 2014-12-10 2015-04-01 登高电气有限公司 Casting type combined transformer and casting die and production process for producing combined transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104485219A (en) * 2014-12-10 2015-04-01 登高电气有限公司 Casting type combined transformer and casting die and production process for producing combined transformer

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