CN106783112B - A kind of dismountable voltage transformer - Google Patents
A kind of dismountable voltage transformer Download PDFInfo
- Publication number
- CN106783112B CN106783112B CN201710110046.2A CN201710110046A CN106783112B CN 106783112 B CN106783112 B CN 106783112B CN 201710110046 A CN201710110046 A CN 201710110046A CN 106783112 B CN106783112 B CN 106783112B
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- China
- Prior art keywords
- metal shell
- voltage transformer
- winding
- iron core
- heat sink
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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
- H01F27/02—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
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Transformers For Measuring Instruments (AREA)
- Insulating Of Coils (AREA)
Abstract
The present invention provides a kind of dismountable voltage transformers, comprising: metal shell, for accommodating mutual inductor, including left-half and right half part；Iron core is in square shape, is placed in the center of the metal shell；First winding and secondary winding, correspond respectively to inner layer and outer layer is wrapped on the iron core, and electrically isolated from one by insulation material layer；More heat sink material sticks, the more heat sink material sticks pass through the insulation material layer, and are inserted into the jack respectively；Moulding material is filled in the metal shell, and coats the iron core, first winding, secondary winding and heat sink material stick completely.
Description
Technical field
The present invention relates to the mutual inductors of power domain, and in particular to a kind of dismountable voltage transformer.
Background technique
In the power system, signal needed for the metering, measurement and implementation relay protection of voltage mostly uses electromagnetic type mutual
Sensor provides, and this mutual inductor is the problem is that have that short circuit risk, weight weight, volume are big, secondary load reflection is sensitive, easily
Ferromagnetic resonance occurs, security risk is also occurred that when serious.Currently, electric system is with the continuous development of intellectualized technology
Develop to networking, automation and digitlization direction, input signal needed for secondary device has significantly reduced, and does not need large capacity
Secondary singal, therefore this traditional electromagnetic potential transformer is difficult to meet new technical requirements.There is an urgent need to a kind of nothings
Short circuit risk, small size, light weight, the electronic mutual inductor that secondary load is insensitive, performance is stable, the linearity is good.
With the needs that the development of digital transformer substation and smart grid are built, electric system to measurement, protection, control and
Data transmission intelligent, the requirement of automation are higher and higher, and the electronic type voltage transformer thus to come into being also becomes popular
Research object, at present in medium voltage network, electronic type voltage transformer mostly uses greatly electric resistance partial pressure principle and capacitance-resistance voltage division principle,
The electronic type voltage transformer being designed with this principle, it is high-efficient there are heat production so that load capacity it is low (megaohm or more),
Precision is low, and especially after running for a period of time, error information substantial deviation, class of accuracy data when more than factory are not achieved
The actual requirement of user.In addition, sealed voltage transformer is not easy to be badly in need of electricity that can be easy to disassemble with changing component and repairing
Press mutual inductor.
Summary of the invention
Based on above-mentioned mutual inductor is solved the problems, such as, the present invention provides a kind of dismountable voltage transformer shells, comprising:
Metal shell, for accommodating mutual inductor, including left-half and right half part, the left-half and right half part
It can engage to form the closed metal shell completely, and left-half includes a side wall of metal shell, right half part
Top surface, bottom surface and three side walls including metal shell, the side wall of the left-half and right half part and left-half
The opposite side wall of side wall on be respectively provided with N number of pillar, N number of pillar is respectively provided with jack, and N is whole more than or equal to 4
Number.
According to an embodiment of the invention, the left-half has the bolt stretched out from its end, the right half part tool
There is the socket to match with the bolt.
The present invention also provides a kind of dismountable voltage transformers, comprising:
Metal shell, for accommodating mutual inductor, including left-half and right half part, the left-half and right half part
It can engage to form the closed metal shell completely, and left-half includes a side wall of metal shell, right half part
Top surface, bottom surface and three side walls including metal shell, the side wall of the left-half and right half part and left-half
The opposite side wall of side wall on be respectively provided with N number of pillar, N number of pillar is respectively provided with jack, and N is whole more than or equal to 4
Number.
Iron core is in square shape, is placed in the center of the metal shell；
First winding and secondary winding, correspond respectively to inner layer and outer layer is wrapped on the iron core, and pass through insulation
Material layer is electrically isolated from one；
More heat sink material sticks, the more heat sink material sticks pass through the insulation material layer, and respectively described in insertion
In jack；
Moulding material is filled in the metal shell, and coats the iron core, first winding, secondary winding completely
With heat sink material stick.
According to an embodiment of the invention, two terminal boards are additionally provided on the outside of the metal shell, for drawing first winding
With the terminal of secondary winding.
According to an embodiment of the invention, the material of the metal shell is copper or copper alloy etc..
According to an embodiment of the invention, the insulation material layer is cured heat-conducting resin or silica gel etc..
According to an embodiment of the invention, the heat sink material stick 4 or 8.
According to an embodiment of the invention, the heat sink material stick is nonmetallic Heat Conduction Material.
According to an embodiment of the invention, the heat sink material stick is heat-conducting plastic, thermal conductive ceramic or graphite etc..
According to an embodiment of the invention, the iron core docks the square shape iron core to be formed using two C fonts.
Advantages of the present invention is as follows:
(1) metal shell can carry out globality external cooling, improve radiating efficiency, and metal shell plays the work of shielding
With；
(2) winding, which works long hours, can generate a large amount of heat, and use good heat dispersion performance insulator separation once around
Group and secondary winding can effectively transmit heat；
(3) heat sink material stick insertion insulating layer can take away heat to shell, avoid influencing the temperature of winding and iron core；
(4) metal shell is that two parts match, and is easy to disassemble and replace heat-radiating rod and other parts.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the mutual inductor with radiating subassembly of the invention；
Fig. 2 is the side view of windings section of the invention；
Fig. 3 is the cross-sectional view of the left-half of metal shell of the invention；
Fig. 4 is the right view of the left-half of metal shell of the invention.
Specific embodiment
Referring to Fig. 1, dismountable voltage transformer shell of the invention, comprising:
Metal shell, for accommodating mutual inductor, including left-half 1b and right half part 1a, the left-half 1b and the right side
Half part 1a can engage to form the closed metal shell completely, and left-half 1b includes a side of metal shell
Wall, right half part 1a include the top surface, bottom surface and three side walls of metal shell, the side wall and right half part of the left-half
The side wall opposite with the side wall of left-half on be respectively provided with N number of pillar 10,13, N number of pillar 10,13 is respectively provided with slotting
Hole 14, N are the integer more than or equal to 4.The left-half 1b has the bolt 12 stretched out from its end, the right half part
1a has the socket to match with the bolt 12 (referring to Fig. 3,4)；
Iron core 2 is in square shape, is placed in the center of the metal shell, and the iron core docks shape using two C fonts
At square shape iron core；
First winding 3 and secondary winding 4, correspond respectively to inner layer and outer layer is wrapped on the iron core 2, and by exhausted
Edge material layer 9 is electrically isolated from one；
More heat sink material stick 6b, the more heat sink material stick 6b pass through the insulation material layer 9, and are inserted into respectively
In the jack 14；
Moulding material 5 is filled in the metal shell, and coat completely the iron core 2, first winding 3, it is secondary around
4 and heat sink material stick 6b of group.
Wherein, two terminal board (not shown) are additionally provided on the outside of the metal shell 2, for drawing first winding 3 and two
The terminal of secondary winding 4.The material of the metal shell is the thermal diffusivities metals such as copper or copper alloy.The insulation material layer 9 is solid
Heat-conducting resin or silica gel of change etc..
Particularly, the heat radiation material layer 6a and heat sink material stick 6b be material of the same race, the heat radiation material layer 6a and dissipate
Hot material stick 6b is nonmetallic Heat Conduction Material, such as can be heat-conducting plastic, thermal conductive ceramic or graphite etc.；It referring to fig. 2 can be with
See, heat sink material stick 6b is annularly distributed in the periphery of the first winding 3, and first winding has a coiling 7, secondary winding have around
Line 8.
Finally, it should be noted that obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Other various forms of variations or variation out.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (7)
1. a kind of dismountable voltage transformer, comprising:
Metal shell, for accommodating mutual inductor, including left-half and right half part, the left-half and right half part are complete
Engaging forms the closed metal shell, and left-half includes a side wall of metal shell, and right half part includes metal
Top surface, bottom surface and three side walls of shell, the side wall of the left-half and the side wall phase with left-half of right half part
Pair side wall on be respectively provided with N number of pillar, N number of pillar is respectively provided with jack, and N is the integer more than or equal to 4；
Iron core is in square shape, is placed in the center of the metal shell；
First winding and secondary winding, correspond respectively to inner layer and outer layer is wrapped on the iron core, and pass through insulating materials
Layer is electrically isolated from one, and the insulation material layer is cured heat-conducting resin or silica gel；
More heat sink material sticks, the more heat sink material sticks by with the first winding and secondary winding it is discontiguous in a manner of wear
The insulation material layer is crossed, and is inserted into the jack respectively；
Moulding material is filled in the metal shell, and is coated the iron core, first winding, secondary winding completely and dissipated
Hot material stick.
2. dismountable voltage transformer according to claim 1, it is characterised in that: be additionally provided on the outside of the metal shell
Two terminal boards, for drawing the terminal of first winding and secondary winding.
3. dismountable voltage transformer according to claim 1, it is characterised in that: the material of the metal shell is copper
Or copper alloy.
4. dismountable voltage transformer according to claim 1, it is characterised in that: the heat sink material stick 4 or 8.
5. dismountable voltage transformer according to claim 4, it is characterised in that: the heat sink material stick is nonmetallic
Heat Conduction Material.
6. dismountable voltage transformer according to claim 5, it is characterised in that: the heat sink material stick is thermally conductive modeling
Material, thermal conductive ceramic or graphite.
7. dismountable voltage transformer according to claim 1, it is characterised in that: the iron core uses two C fonts
Dock the square shape iron core formed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110046.2A CN106783112B (en) | 2017-02-28 | 2017-02-28 | A kind of dismountable voltage transformer |
| PCT/CN2017/084421 WO2018157472A1 (en) | 2017-02-28 | 2017-05-15 | Detachable voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110046.2A CN106783112B (en) | 2017-02-28 | 2017-02-28 | A kind of dismountable voltage transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106783112A CN106783112A (en) | 2017-05-31 |
| CN106783112B true CN106783112B (en) | 2018-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710110046.2A Active CN106783112B (en) | 2017-02-28 | 2017-02-28 | A kind of dismountable voltage transformer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106783112B (en) |
| WO (1) | WO2018157472A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111370203B (en) * | 2020-03-06 | 2021-10-26 | 湖北天瑞电子股份有限公司 | Voltage transformer with high IP protection level |
| CN111261374B (en) * | 2020-03-26 | 2021-08-27 | 河北中开明泰电气设备有限公司 | Environment-friendly intelligent mutual inductor and mutual inductor compensation method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003347129A (en) * | 2002-05-24 | 2003-12-05 | Minebea Co Ltd | Surface-mounted coil |
| CN201036147Y (en) * | 2007-04-13 | 2008-03-12 | 大连北方互感器有限公司 | Voltage mutual inductor for gas insulation high-tension switch cabinet |
| CN102044333A (en) * | 2009-10-12 | 2011-05-04 | 大连泰克电气有限公司 | Special insulated protection shell of mutual inductor |
| EP2631921A1 (en) * | 2012-02-22 | 2013-08-28 | Kollmorgen AB | Transformer arrangement |
| CN202523508U (en) * | 2012-04-25 | 2012-11-07 | 华为技术有限公司 | Magnetic device assembly of power module and power module |
| CN104240930A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | Special three-phase voltage transformer with protective device for solid ring network cabinet |
| CN205487720U (en) * | 2016-01-17 | 2016-08-17 | 国网山东省电力公司巨野县供电公司 | Just, mutual -inductor shell of dismantling |
| CN205810562U (en) * | 2016-05-19 | 2016-12-14 | 中科电力装备（安徽）智能化科技有限公司 | A kind of stable type voltage transformer housing |
| CN105845323B (en) * | 2016-05-24 | 2017-08-15 | 重庆华虹仪表有限公司 | Low voltage mutual inductor housing |
| CN106384646B (en) * | 2016-11-18 | 2018-01-19 | 东莞市迈思普电子有限公司 | A kind of transformer of built-in radiator structure |
-
2017
- 2017-02-28 CN CN201710110046.2A patent/CN106783112B/en active Active
- 2017-05-15 WO PCT/CN2017/084421 patent/WO2018157472A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018157472A1 (en) | 2018-09-07 |
| CN106783112A (en) | 2017-05-31 |
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