CN107134356A - A kind of Dry Type High Tension Current Transformer - Google Patents
A kind of Dry Type High Tension Current Transformer Download PDFInfo
- Publication number
- CN107134356A CN107134356A CN201710390934.4A CN201710390934A CN107134356A CN 107134356 A CN107134356 A CN 107134356A CN 201710390934 A CN201710390934 A CN 201710390934A CN 107134356 A CN107134356 A CN 107134356A
- Authority
- CN
- China
- Prior art keywords
- primary conductor
- copper pipe
- current transformer
- winding
- high tension
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H01F27/292—Surface mounted devices
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- 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
- H01F2038/305—Constructions with toroidal magnetic core
Abstract
The invention discloses a kind of Dry Type High Tension Current Transformer, including binding post, connector, silicon rubber umbrella skirt, first winding, secondary winding, overvoltage protection device, casing and support, connector is provided between the binding post, the first winding includes Primary Conductor copper pipe, rigid backbone, capacitive insulating layer, the box house is provided with secondary winding and terminal box, terminal box connects the Primary Conductor copper pipe of " U " type, piece " U " type rigid backbone of Primary Conductor copper pipe internal run-through, a layer capacitance insulating barrier is extruded outside Primary Conductor copper pipe, silicon rubber umbrella skirt is set with outside capacitive insulating layer, the overvoltage protection device is connected by lead with Primary Conductor.The Dry Type High Tension Current Transformer has obvious environmental protection feature, its small volume, lightweight, oil-free, without porcelain, without gas, fire prevention, explosion-proof, free from environmental pollution, and maintenance workload is few, its electric property is superior, with preferable economic benefit and long-range social benefit.
Description
Technical field
The present invention relates to power network transformer, more particularly to a kind of Dry Type High Tension Current Transformer.
Background technology
Current transformer is the larger primary current of numerical value by certain no-load voltage ratio can be converted to numerical value less two
Primary current, for the purposes such as being protected, being measured.Size of current is hanged in the circuit of generating, power transformation, transmission of electricity, distribution and electricity consumption
Very, have from several peaces to tens of thousands of Andu.Need to be converted to the unified electric current of comparison for ease of measurement, protection and control, in addition circuit
On voltage typically all compare high if direct measurement is breakneck, current transformer just plays current transformation and electrical isolation
Effect, but easily cause electric current under the inclement weather conditions such as high voltage, thunderbolt due to existing current transformer structure
The damage of transformer, traditional present weight of oil-immersed and high-voltage current transformer is big, contaminative height and the easy seepage of oily material,
The limitation of actual use is larger, it is impossible to which the need for meeting existing produce reality, in order to meet, cost is low, curent change is big, anti-
Seepage, explosion-proof, pollution-free lightweight requirement, it is therefore necessary to be improved existing transformer, to meet actual need
Will.
The content of the invention
It is an object of the invention to provide a kind of Dry Type High Tension Current Transformer, to solve what is proposed in above-mentioned background technology
Problem.
To achieve the above object, the present invention provides following technical scheme：A kind of Dry Type High Tension Current Transformer, including wiring
Terminal, connector, silicon rubber umbrella skirt, first winding, secondary winding, overvoltage protection device, casing and support, the binding post
Between be provided with connector；The first winding includes Primary Conductor copper pipe, rigid backbone, capacitive insulating layer；The box house
Secondary winding and terminal box are installed, terminal box connects the Primary Conductor copper pipe of " U " type, Primary Conductor copper pipe internal run-through one
Extruded outside root " U " type rigid backbone, Primary Conductor copper pipe outside a layer capacitance insulating barrier, capacitive insulating layer and be set with silicon rubber
Full skirt；The overvoltage protection device is connected by lead with Primary Conductor copper pipe.
It is preferred that, connector is provided between the binding post, firm connection is formed using connector and keeps after wiring
Its terminals and plane-parallel.
It is preferred that, the secondary winding is looped around on annular core, and the conductor of first winding passes through secondary winding.
It is preferred that, the capacitive insulating layer is that polytetrafluoroethylene film and metal foil are surrounded into " U " type one in layer
On partial conductor, 15-20 layers are wrapped repeatedly.
Compared with prior art, the beneficial effects of the invention are as follows：The Dry Type High Tension Current Transformer small volume, it is lightweight,
Oil-free, without porcelain, without gas, fire prevention, explosion-proof, free from environmental pollution, connector is two binding posts of connection between high-voltage leading-out wire,
Can with the mechanical strength of strengthening electric current transformer, multi-turn current transformer with this change first winding and, series relationship, to change
Become no-load voltage ratio, capacitive insulating layer is that polytetrafluoroethylene film and metal foil are surrounded into " U " type Primary Conductor copper in layer in addition
Guan Shang, both repeatedly wrap and form coaxial circles column type capacitance structure, make Electric Field Distribution radially and axially uniform, improve one
The breakdown voltage and creeping discharge voltage of secondary winding, silicon rubber cluster parachute ageing-resistant performance and anti creepage trace performance are excellent, and
Certain insulating effect can be played, Primary Conductor copper pipe side is provided with overvoltage protection device in addition, the purpose is to prevent thunderbolt
Primary winding coils are destroyed etc. under high pressure inclement weather conditions.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the structural representation of A-A sections；
In figure：1st, binding post one；2nd, binding post two；3rd, connector；4th, Primary Conductor copper pipe；5th, rigid backbone；6th, electric capacity
Insulating barrier；7th, silicon rubber umbrella skirt；8th, secondary winding；9th, overvoltage protection device；10th, terminal box；11st, casing；12nd, support.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-2 is referred to, the present invention provides a kind of technical scheme：A kind of Dry Type High Tension Current Transformer, including terminals
Son, silicon rubber umbrella skirt 7, first winding, secondary winding 8, overvoltage protection device 9, casing 11 and support 12, the binding post it
Between be provided with connector 3, connector 3 is that binding post 1 and binding post 2 are connected between high-voltage leading-out wire, can be with strengthening electric current
The mechanical strength of transformer, multi-turn current transformer with this change first winding and, series relationship, to change no-load voltage ratio；Once
Winding includes Primary Conductor copper pipe 4, rigid backbone 5, capacitive insulating layer 6, and rigid backbone 5 is made up of non-magnetic material,
Other capacitive insulating layer is to surround polytetrafluoroethylene film and metal foil on " U " type Primary Conductor copper pipe 4 in layer, two
Repeatedly wrapping forms coaxial circles column type capacitance structure to person, makes Electric Field Distribution radially and axially uniform, improves first winding
Breakdown voltage and creeping discharge voltage；Box house is provided with secondary winding 8 and terminal box 10, and terminal box 10 connects one " U "
Extruded outside the Primary Conductor copper pipe 4 of type, piece " U " type rigid backbone 5 of 4 internal run-through of Primary Conductor copper pipe, Primary Conductor copper pipe 4
One layer capacitance insulating barrier 6, the outside of capacitive insulating layer 6 is set with silicon rubber umbrella skirt 7, the UV resistant of silicon rubber umbrella skirt 7, anti-aging
Property it is strong, be higher by much than common insulator resistance to pressure, the security of winding and element inside protection；Overvoltage protection device 9 is by drawing
Line is connected with Primary Conductor copper pipe 4, prevents from destroying primary winding coils under the high pressure inclement weather conditions such as thunderbolt, greatly carries
High service life；Casing 11 is, for wrapping up low pressure winding, preventing sleet wind-drift-sand roadbed wherein, and to play fixed support once
The effect of winding and secondary winding；Support 12 is for supporting whole transformer.
It is described above, only best mode for carrying out the invention, any one skilled in the art is in the present invention
In the technical scope of disclosure, the simple change or equivalence replacement of the technical scheme that can be become apparent to each fall within the present invention's
In protection domain.
Claims (4)
1. a kind of Dry Type High Tension Current Transformer, including binding post, connector, silicon rubber umbrella skirt, first winding, it is secondary around
Group, overvoltage protection device, casing and support, it is characterised in that：Connector is provided between the binding post；The first winding
Including Primary Conductor copper pipe, rigid backbone, capacitive insulating layer；The box house is provided with secondary winding and terminal box, wiring
Box connects the Primary Conductor copper pipe of " U " type, piece " U " type rigid backbone of Primary Conductor copper pipe internal run-through, Primary Conductor copper
Pipe outer extrude is set with silicon rubber umbrella skirt outside a layer capacitance insulating barrier, capacitive insulating layer；The overvoltage protection device passes through
Lead is connected with Primary Conductor.
2. a kind of Dry Type High Tension Current Transformer according to claim 1, it is characterised in that：Set between the binding post
There is connector, form firm connection using connector and keep its terminals and plane-parallel after wiring.
3. a kind of Dry Type High Tension Current Transformer according to claim 1, it is characterised in that：The secondary winding is looped around
On annular core, the conductor of first winding passes through secondary winding.
4. a kind of Dry Type High Tension Current Transformer according to claim 1, it is characterised in that：The capacitive insulating layer be by
Polytetrafluoroethylene film and metal foil surround on " U " type Primary Conductor copper pipe in layer, and 15-20 layers are wrapped repeatedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390934.4A CN107134356A (en) | 2017-05-27 | 2017-05-27 | A kind of Dry Type High Tension Current Transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390934.4A CN107134356A (en) | 2017-05-27 | 2017-05-27 | A kind of Dry Type High Tension Current Transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107134356A true CN107134356A (en) | 2017-09-05 |
Family
ID=59734885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710390934.4A Pending CN107134356A (en) | 2017-05-27 | 2017-05-27 | A kind of Dry Type High Tension Current Transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107134356A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808764A (en) * | 2017-11-23 | 2018-03-16 | 国网山东省电力公司烟台供电公司 | A kind of current transformer for possessing fixed structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2684201Y (en) * | 2003-12-30 | 2005-03-09 | 北京国电四维电力技术有限公司 | Dry-type high tension current transformer |
| CN2802679Y (en) * | 2005-07-11 | 2006-08-02 | 广东四会互感器厂有限公司 | Outdoor dry-type high-voltage current transformer |
| CN201060738Y (en) * | 2007-07-16 | 2008-05-14 | 辽宁博际电气技术有限公司 | Dry type high voltage current mutual inductor |
| US20120092115A1 (en) * | 2008-11-27 | 2012-04-19 | Mohan Srinivasrao | Current transformer |
-
2017
- 2017-05-27 CN CN201710390934.4A patent/CN107134356A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2684201Y (en) * | 2003-12-30 | 2005-03-09 | 北京国电四维电力技术有限公司 | Dry-type high tension current transformer |
| CN2802679Y (en) * | 2005-07-11 | 2006-08-02 | 广东四会互感器厂有限公司 | Outdoor dry-type high-voltage current transformer |
| CN201060738Y (en) * | 2007-07-16 | 2008-05-14 | 辽宁博际电气技术有限公司 | Dry type high voltage current mutual inductor |
| US20120092115A1 (en) * | 2008-11-27 | 2012-04-19 | Mohan Srinivasrao | Current transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808764A (en) * | 2017-11-23 | 2018-03-16 | 国网山东省电力公司烟台供电公司 | A kind of current transformer for possessing fixed structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170905 |