CN107464658A - A kind of current transformer for being easy to quick assembling - Google Patents

A kind of current transformer for being easy to quick assembling Download PDF

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Publication number
CN107464658A
CN107464658A CN201710669316.3A CN201710669316A CN107464658A CN 107464658 A CN107464658 A CN 107464658A CN 201710669316 A CN201710669316 A CN 201710669316A CN 107464658 A CN107464658 A CN 107464658A
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CN
China
Prior art keywords
transformer
housing cylinder
cylinder wall
annular bottom
bottom wall
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.)
Granted
Application number
CN201710669316.3A
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Chinese (zh)
Other versions
CN107464658B (en
Inventor
丁鸿飞
胡昌才
杨华荣
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.)
State Grid Information and Telecommunication Co Ltd
Anhui Jiyuan Software Co Ltd
Original Assignee
ANHUI JUNHUA SHUNYI ENJIA AMORPHOUS MATERIALS 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.)
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Application filed by ANHUI JUNHUA SHUNYI ENJIA AMORPHOUS MATERIALS Co Ltd filed Critical ANHUI JUNHUA SHUNYI ENJIA AMORPHOUS MATERIALS Co Ltd
Priority to CN201710669316.3A priority Critical patent/CN107464658B/en
Publication of CN107464658A publication Critical patent/CN107464658A/en
Application granted granted Critical
Publication of CN107464658B publication Critical patent/CN107464658B/en
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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
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • 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
    • H01F27/02—Casings
    • 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
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

The invention discloses a kind of current transformer for being easy to quick assembling; including transformer casing and transformer primary connection post; the transformer casing includes protection outer cover body and protection closure head, and the protection outer cover body includes shell annular bottom wall, lower end connects the inner side housing cylinder wall of the shell annular bottom wall inside edge, lower end connects the outside housing cylinder wall of the shell annular bottom wall outer ledge；The shell annular bottom wall, the inner side housing cylinder wall and the outside housing cylinder wall are coaxial；The transformer primary connection post includes cylindrical flow-guiding bar and the flat wire plate positioned at the cylindrical flow-guiding bar both ends, the cylindrical flow-guiding bar diameter is identical with the internal diameter of the inner side housing cylinder wall, and the width of the flat wire plate is more than the internal diameter of the inner side housing cylinder wall.It is convenient, rapid that the present invention makes insulating top cover be assembled with insulation crust, and the connectivity robustness of insulating top cover and insulation crust is good.

Description

A kind of current transformer for being easy to quick assembling
Technical field
The present invention relates to a kind of accuracy transformer product technical field, particularly it is a kind of be easy to quick assembling electric current it is mutual Sensor.
Background technology
Current transformer is the equipment of scaling transformation electric current, is mainly used in high current scaling transformation into the small electricity of standard Stream, in order to realize the standardization of measuring instrumentss, protection equipment and automatic control equipment or miniaturization.
Current transformer is mainly made up of in structure the iron core, first side winding and the secondary side winding that close, and it is once Side umber of turn is seldom, goes here and there in the circuit for the electric current for needing to measure, therefore whole electric currents that it often has circuit flow through, secondly Secondary side umber of turn is relatively more, is serially connected in measuring instrumentss and protective loop, and at work, its secondary side returns current transformer Road is to close all the time, therefore measuring instrumentss and the impedance very little of protective loop series coil, the working condition of current transformer Close to short circuit；Primary side high current is converted into carry out operation or measurement by secondary side low current by current transformer.
Current transformer external protective structures of the prior art are generally insulated by the insulation crust and capping of one end open The insulating top cover at shell collar extension end is formed, and the mode that insulating top cover connects or is interference fitted with insulation crust generally use gluing is connected Fixed, gluing connects the problem of long processing time being present and easily being cohered in the presence of local leakage, once during interference fit insulating top cover or Insulation crust local deformation, then cause to connect it is insecure so that external protective structures lose protecting effect.
The content of the invention
For overcome the deficiencies in the prior art, the invention provides a kind of current transformer for being easy to quick assembling, makes absolutely Edge top cover and insulation crust assembling are convenient, rapid, and the connectivity robustness of insulating top cover and insulation crust is good.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of current transformer for being easy to quick assembling, including transformer casing and transformer primary connection post, the transformer Shell includes protection outer cover body and protection closure head, and the protection outer cover body includes shell annular bottom wall, lower end connects The inner side housing cylinder wall of the shell annular bottom wall inside edge, lower end connect the outer of the shell annular bottom wall outer ledge Side housing cylinder wall；The shell annular bottom wall, the inner side housing cylinder wall and the outside housing cylinder wall are coaxial；Institute Stating transformer primary connection post includes cylindrical flow-guiding bar and the flat wire plate positioned at the cylindrical flow-guiding bar both ends, described Cylindrical flow-guiding bar diameter is identical with the internal diameter of the inner side housing cylinder wall, and the width of the flat wire plate is more than in described The internal diameter of side housing cylinder wall.
As the further improvement of above-mentioned technical proposal, the flat wire plate connects one end of the cylindrical flow-guiding bar For terminal plate fixing end, the flat wire backboard to one end of the cylindrical flow-guiding bar be terminal plate end, it is described flat The width of terminal plate is gradually reduced from middle part to the terminal plate fixing end, and the width of the flat wire plate is from middle part to institute State terminal plate end also gradually increase and decrease it is small.
It is described mutual as the further improvement of above-mentioned technical proposal, in addition to transformer core and transformer secondary winding Sensor magnetic core is annular, and the transformer secondary winding is wrapped in the transformer core surface；It is wound with the transformer The transformer core of secondary winding is arranged between the inner side housing cylinder wall and the outside housing cylinder wall, and institute Shell annular bottom wall and the protection closure head are stated respectively positioned at the transformer for being wound with the transformer secondary winding The axial both ends of magnetic core.
As the further improvement of above-mentioned technical proposal, the transformer secondary winding is provided with extraction wiring, the guarantor The wiring fairlead passed through for the extraction wiring is provided with shield closure head；The top, described of the protection closure head Encapsulation shrink film is enclosed with the outside of the bottom of shell annular bottom wall and the outside housing cylinder wall.
As the further improvement of above-mentioned technical proposal, the transformer core includes magnetic core isolation shell and is arranged at described Magnetic band winding ring inside magnetic core isolation shell, the magnetic core isolation shell include insulation inner casing body and insulation inner casing top cover, Medial surface, lateral surface and the axial both ends of the surface of the magnetic band winding ring are provided with silicone resin adhesive.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of current transformer for being easy to quick assembling provided by the present invention, silicone resin adhesive can both play cushioning effect, There is cohesive action again, and there is preferable heat resistance and sealing, therefore insulate inner casing body and the top cover cooperation of insulation inner casing It is convenient and swift；Protection outer cover body and protection closure head are fixed by the position-limiting action at transformer primary connection post both ends；Most Encapsulation shrink film is set afterwards, the edge for protecting closure head is fixed and protected again；So as to fully protect inside Electronic device.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structural representation of current transformer for being easy to quick assembling of the present invention.
Embodiment
Reference picture 1, Fig. 1 are the structural representations of a specific embodiment of the invention.
As shown in figure 1, a kind of current transformer for being easy to quick assembling, including transformer casing and transformer primary connection Post, the transformer casing include protection outer cover body and protection closure head 11, and the protection outer cover body includes outer girdle Shape bottom wall 12, lower end connect the inner side housing cylinder wall 13 of the inside edge of shell annular bottom wall 12, lower end is connected outside described The outside housing cylinder wall 14 of the outer ledge of shell annular bottom wall 12；The shell annular bottom wall 12, the inner side housing cylinder wall 13 and the outside housing cylinder wall 14 it is coaxial；The transformer primary connection post includes cylindrical flow-guiding bar 21 and positioned at institute State the flat wire plate 22 at the cylindrical both ends of flow-guiding bar 21, the cylindrical diameter of flow-guiding bar 21 and the inner side housing cylinder wall 13 internal diameter is identical, and the width of the flat wire plate 22 is more than the internal diameter of the inner side housing cylinder wall 13.
Specifically, one end that the flat wire plate 22 connects the cylindrical flow-guiding bar 21 is terminal plate fixing end, institute It is terminal plate end that flat wire plate 22, which is stated, backwards to one end of the cylindrical flow-guiding bar 21, the width of the flat wire plate 22 It is gradually reduced from middle part to the terminal plate fixing end, and the width of the flat wire plate 22 is last from middle part to the terminal plate End also gradually increases and decreases small.
As preferable, in addition to transformer core and transformer secondary winding 31, the transformer core are annular, The transformer secondary winding 31 is wrapped in the transformer core surface；It is wound with the described of the transformer secondary winding 31 Transformer core is arranged between the inner side housing cylinder wall 13 and the outside housing cylinder wall 14, and shell annular Bottom wall 12 and the protection closure head 11 are respectively positioned at the transformer core for being wound with the transformer secondary winding 31 Axial both ends.The transformer secondary winding 31, which is provided with, draws wiring 32, and confession is provided with the protection closure head 11 The wiring fairlead 15 drawn wiring 32 and passed through；The top of the protection closure head 11, the shell annular bottom wall 12 Bottom and the outside housing cylinder wall 14 outside be enclosed with encapsulation shrink film 16.It is exhausted that the transformer core includes magnetic core Edge shell and the magnetic band winding ring 41 being arranged inside the magnetic core isolation shell, the magnetic core isolation shell include insulation inner casing sheet Body 42 and insulation inner casing top cover 43, medial surface, lateral surface and the axial both ends of the surface of the magnetic band winding ring 41 are respectively provided with There is silicone resin adhesive 44.
During assembling, one layer of silicon is coated with medial surface, lateral surface and the axial both ends of the surface of magnetic band winding ring 41 Resin adhesive 44, then encapsulated with the insulation inner casing body 42 and the insulation inner casing top cover 43, the silicones gluing Agent 44 can both play cushioning effect, have cohesive action again, and have preferable heat resistance and sealing, therefore in the insulation Shell body 42 and the insulation inner casing top cover 43 coordinate convenient and swift；Then the transformer secondary winding 31 is wound, then is encapsulated The protection outer cover body and the protection closure head 11, then install the transformer primary connection post, by described mutual The position-limiting action at sensor primary connection post both ends fixes the protection outer cover body and the protection closure head 11；Finally set The encapsulation shrink film 16, the edge of the protection closure head 11 is fixed and protected again.
The preferable implementation to the present invention is illustrated above, and certainly, the present invention can also use and above-mentioned implementation The different form of mode, the equivalent conversion that those skilled in the art are made on the premise of without prejudice to spirit of the invention Or corresponding change, it should all belong in protection scope of the present invention.

Claims (5)

  1. A kind of 1. current transformer for being easy to quick assembling, it is characterised in that：Including transformer casing and transformer primary connection Post, the transformer casing include protection outer cover body and protection closure head（11）, it is described to protect outer cover body to include shell Annular bottom wall（12）, lower end connect the shell annular bottom wall（12）The inner side housing cylinder wall of inside edge（13）, lower end connect Connect the shell annular bottom wall（12）The outside housing cylinder wall of outer ledge（14）；The shell annular bottom wall（12）, it is described Inner side housing cylinder wall（13）With the outside housing cylinder wall（14）It is coaxial；The transformer primary connection post includes cylinder Shape flow-guiding bar（21）With positioned at the cylindrical flow-guiding bar（21）The flat wire plate at both ends（22）, the cylindrical flow-guiding bar （21）Diameter and the inner side housing cylinder wall（13）Internal diameter it is identical, the flat wire plate（22）Width be more than it is described in Side housing cylinder wall（13）Internal diameter.
  2. A kind of 2. current transformer for being easy to quick assembling according to claim 1, it is characterised in that：The flat wire Plate（22）Connect the cylindrical flow-guiding bar（21）One end be terminal plate fixing end, the flat wire plate（22）Backwards to described Cylindrical flow-guiding bar（21）One end be terminal plate end, the flat wire plate（22）Width from middle part to the terminal plate Fixing end is gradually reduced, and the flat wire plate（22）Width also gradually increase and decrease from middle part to the terminal plate end it is small.
  3. A kind of 3. current transformer for being easy to quick assembling according to claim 1, it is characterised in that：Also include transformer Magnetic core and transformer secondary winding（31）, the transformer core is annular, the transformer secondary winding（31）It is wrapped in The transformer core surface；It is wound with the transformer secondary winding（31）The transformer core be arranged at the inner side Housing cylinder wall（13）With the outside housing cylinder wall（14）Between, and the shell annular bottom wall（12）Outside the protection Shell top cover（11）It is located at respectively and is wound with the transformer secondary winding（31）The transformer core axial both ends.
  4. A kind of 4. current transformer for being easy to quick assembling according to claim 3, it is characterised in that：The transformer two Secondary winding（31）It is provided with extraction wiring（32）, the protection closure head（11）On be provided with for the extraction wiring（32）Wear The wiring fairlead crossed（15）；The protection closure head（11）Top, the shell annular bottom wall（12）Bottom and institute State outside housing cylinder wall（14）Outside be enclosed with encapsulation shrink film（16）.
  5. A kind of 5. current transformer for being easy to quick assembling according to claim 1, it is characterised in that：The transformer magnetic Core includes magnetic core isolation shell and the magnetic band being arranged inside magnetic core isolation shell winding ring（41）, the magnetic core isolation shell Including the inner casing body that insulate（42）With insulation inner casing top cover（43）, the magnetic band winding ring（41）Medial surface, lateral surface And axial both ends of the surface are provided with silicone resin adhesive（44）.
CN201710669316.3A 2017-08-08 2017-08-08 A kind of current transformer convenient for quick assembling Active CN107464658B (en)

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CN201710669316.3A CN107464658B (en) 2017-08-08 2017-08-08 A kind of current transformer convenient for quick assembling

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Application Number Priority Date Filing Date Title
CN201710669316.3A CN107464658B (en) 2017-08-08 2017-08-08 A kind of current transformer convenient for quick assembling

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CN107464658A true CN107464658A (en) 2017-12-12
CN107464658B CN107464658B (en) 2019-01-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108777225A (en) * 2018-05-18 2018-11-09 河南森源电气股份有限公司 A kind of separate terminal enclosure positioning tool
CN108922735A (en) * 2018-07-20 2018-11-30 芜湖君华材料有限公司 A kind of amorphous alloy magnetic core of resistance to TRANSIENT HIGH TEMPERATURE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09190932A (en) * 1996-01-08 1997-07-22 Tamura Seisakusho Co Ltd Reactor
JP2001035729A (en) * 1999-07-26 2001-02-09 Mitsumi Electric Co Ltd Board-mounting coil device
CN106783115A (en) * 2017-02-13 2017-05-31 安徽君华舜义恩佳非晶材料有限公司 A kind of anti-DC component current transformer of double-iron core

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09190932A (en) * 1996-01-08 1997-07-22 Tamura Seisakusho Co Ltd Reactor
JP2001035729A (en) * 1999-07-26 2001-02-09 Mitsumi Electric Co Ltd Board-mounting coil device
CN106783115A (en) * 2017-02-13 2017-05-31 安徽君华舜义恩佳非晶材料有限公司 A kind of anti-DC component current transformer of double-iron core

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108777225A (en) * 2018-05-18 2018-11-09 河南森源电气股份有限公司 A kind of separate terminal enclosure positioning tool
CN108777225B (en) * 2018-05-18 2024-02-20 河南森源电气股份有限公司 Wiring cover positioning tool
CN108922735A (en) * 2018-07-20 2018-11-30 芜湖君华材料有限公司 A kind of amorphous alloy magnetic core of resistance to TRANSIENT HIGH TEMPERATURE

Also Published As

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Effective date of registration: 20181205

Address after: 230088 No. 1800, Xi you road, hi tech Zone, Hefei, Anhui.

Applicant after: ANHUI JIYUAN SOFTWARE CO., LTD.

Applicant after: STATE GRID INFORMATION & TELECOMMUNICATION GROUP CO., LTD.

Address before: 241080 No. 1 Xiajiahu Road, Sanshan Economic Development Zone, Wuhu City, Anhui Province

Applicant before: Anhui Junhua Shunyi Enjia Amorphous Materials Co., Ltd.

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