CN109616305A - A kind of three-phase integrated straight-through current transformer - Google Patents
A kind of three-phase integrated straight-through current transformer Download PDFInfo
- Publication number
- CN109616305A CN109616305A CN201811424035.2A CN201811424035A CN109616305A CN 109616305 A CN109616305 A CN 109616305A CN 201811424035 A CN201811424035 A CN 201811424035A CN 109616305 A CN109616305 A CN 109616305A
- Authority
- CN
- China
- Prior art keywords
- cavity
- current transformer
- guide
- phase integrated
- shell
- 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.)
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The present invention relates to current transformers, disclose a kind of three-phase integrated straight-through current transformer.The mutual inductor includes shell, guide pin and loop coil, the shell is the open symmetrical structure in an end face, there are three sequentially connected cavitys for tool in the shell, cavity positioned at both ends is the first cavity, being located in the middle cavity is the second cavity, the depth of second cavity is greater than the depth of first cavity, threading cylinder is respectively provided in three cavitys, the loop coil with magnetic core is arranged on each described threading cylinder, the height of the loop coil is lower than the depth of three cavitys, three groups of guide pinholes are offered on the side wall of the shell side, three groups of guide pinholes are arranged in a one-to-one correspondence with three loop coils, guide pin is fitted in each guide pinhole, the lead-in wire terminal and leading-out terminal of each loop coil are welded with corresponding one group of guide pin inner end respectively.The mutual inductor structure is simple, and structure size is small, not vulnerable to outside electromagnetic interference.
Description
Technical field
The present invention relates to current transformer, in particular to a kind of three-phase integrated straight-through current transformer.
Background technique
Current transformer is that the secondary devices such as measuring instrumentss in electric system, relay protection obtain primary circuit current information
Sensor, be electrical equipment important in electric system, carry isolation between high and low pressure system and high pressure amount to low pressure
Measure the function of conversion.Current transformer itself it is working properly whether, the equipment such as safety and protection, measurement to electric system
Normal work have extremely important meaning.
With the sustainable development of electric/electronic device, device miniaturization requirement is increasingly apparent, and electromagnetism interference requires also to get over
Come higher；Existing Integral three-phase current transformer is by three ribbon core coil configurations in same plane, mostly straight line
Type arrangement, this arrangement mode are the simple combination for realizing three mutual inductor monomers, and relatively single mutual inductor is in structure type
On have certain improvement, but space utilization rate is still lower, and at the same time, the coil configuration with magnetic core in the same plane, is easy to
By the electromagnetic interference of free surrounding space in a plurality of directions.
Summary of the invention
It is asked to solve Integral three-phase current transformer in the prior art vulnerable to electromagnetic interference, space utilization rate are low
Topic, the present invention provides a kind of three-phase integrated straight-through current transformers.
In order to solve the above-mentioned technical problem, the invention adopts the following technical scheme:
A kind of three-phase integrated straight-through current transformer, including shell, the shell are the open symmetrical structure in an end face,
For tool there are three sequentially connected cavity, the cavity positioned at both ends is the first cavity in the shell, and being located in the middle cavity is the
Two cavitys, the depth of second cavity are greater than the depth of first cavity, are respectively provided with threading cylinder in three cavitys, often
The loop coil with magnetic core is arranged on one threading cylinder, the height of the loop coil is lower than three cavitys
Staggered, the shell is laminated in depth, the loop coil in first cavity and the loop coil in second cavity
Three groups of guide pinholes are offered on the side wall of side, three groups of guide pinholes are arranged in a one-to-one correspondence with three loop coils, each
Guide pin is fitted in guide pinhole, the lead-in wire terminal and leading-out terminal of each loop coil respectively with corresponding one group of guide pin
Inner end welding.
Preferably, being successively arranged with installation cylinder and limit cylinder on the guide pin, the installation cylinder is embedded in institute
It states in guide pinhole, the installation cylinder and the guide pinhole are interference fitted；Preferably, the limit cylindrical periphery is coated with asphalt mixtures modified by epoxy resin
Rouge glue.
Preferably, the magnetic core of the coil is soft magnetic materials, enameled wire is the copper wire of surface plating paint；On the outside of the coil
It is wound with Kapton Tape.
The guide pin outer end of three-phase integrated straight-through current transformer provided by the invention is stretched out outside shell, as mutual inductor
Circuit interface.
Three-phase integrated straight-through current transformer provided by the invention further includes the encapsulating layer of encapsulating in the cavity.
The disadvantages of big, vulnerable to outside electromagnetic interference for existing three-phase mutual inductor structure size, the present invention provides one kind
Three-phase integrated straight-through current transformer, three groups of coils, by being reasonably laid out, keep mutual inductor whole using stacking alternating expression distribution
Body structure is more compact and reasonable, improves space utilization rate, is conducive to the Miniaturization Design of mutual inductor；Pass through stacking alternating expression simultaneously
Layout, the area for receiving electromagnetic radiation of mutual inductor become smaller, and can spatially receive less electromagnetic radiation, three-phase coil is because handing over
Mistake layout, can also play magnetic screening action between each other, be conducive to the electromagnetic interference for weakening most directions.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of three-phase integrated straight-through current transformer provided by the present invention；
Fig. 2 is the exploded view of three-phase integrated straight-through current transformer provided by the present invention；
Fig. 3 is shell structure partial structural diagram provided by the present invention；
Fig. 4 is guide pin structural schematic diagram provided by the present invention；
Fig. 5 is loop construction schematic diagram provided by the present invention.
Specific embodiment
The present invention is intended to provide a kind of three-phase integrated straight-through current transformer, to solve Integral three-phase in the prior art
The current transformer problem low vulnerable to electromagnetic interference, space utilization rate.
In order to enable those skilled in the art to better understand the present invention, With reference to embodiment with attached drawing pair
The present invention is described in further detail.
A kind of three-phase integrated straight-through current transformer, including shell 1, the shell 1 are the open symmetrical junction in an end face
Structure, there are three sequentially connected cavitys for the interior tool of the shell, and the cavity positioned at both ends is the first cavity B, is located in the middle cavity
It is greater than the depth of the first cavity B for the depth of the second cavity A, the second cavity A, is respectively provided with and wears in three cavitys
Spool 4, the loop coil 3 with magnetic core is arranged on each described threading cylinder 4, and the magnetic core 33 of the coil is soft magnetism material
Material, enameled wire are the copper wire of surface plating paint；Kapton Tape is wound on the outside of the loop coil 3, the loop coil 3
Height is lower than the depth of three cavitys, offers three groups of guide pinholes 5, three groups of guide pins on the 1 side side wall of shell
Hole 5 is arranged in a one-to-one correspondence with three loop coils 3, is fitted with guide pin 2 in each guide pinhole 5, on the guide pin 2 successively
It is arranged with installation cylinder 24 and limit cylinder 23, the installation cylinder 24 is embedded in the guide pinhole 5, the installation cylinder 24
It is interference fitted with the guide pinhole 5, the lead-in wire terminal 31 and leading-out terminal 32 of each loop coil are respectively with corresponding one
Group guide pin inner end 22 is welded, and guide pin outer end 21 is stretched out outside shell 1, the circuit interface as mutual inductor.
It is preferably carried out in mode in one kind, 23 periphery of limit cylinder of three-phase integrated straight-through current transformer is coated with ring
Oxygen resin glue bonds together guide pin 2 and shell 1, which further includes being potted in cavity
Interior encapsulating layer.
A kind of three-phase integrated straight-through current transformer provided by the present invention is described in detail above.Herein
In apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to sides
Assistant solves method and central idea of the invention.It should be pointed out that not taken off for the those skilled in the art of the art
, can be with several improvements and modifications are made to the present invention under the premise of from the principle of the invention, these improvement and modification also fall into this
In invention scope of protection of the claims.
Claims (8)
1. a kind of three-phase integrated straight-through current transformer, including shell, it is characterised in that: the shell is that an end face is open
Symmetrical structure, there are three sequentially connected cavitys for the interior tool of the shell, and the cavity positioned at both ends is the first cavity, is located in the middle
Cavity is the second cavity, and the depth of second cavity is greater than the depth of first cavity, is respectively provided in three cavitys
Cylinder is threaded, the loop coil with magnetic core is arranged on each described threading cylinder, the height of the loop coil is lower than three
Staggered row is laminated in the depth of the cavity, the loop coil in loop coil and second cavity in first cavity
Cloth, three groups of guide pinholes are offered on the side wall of the shell side, and three groups of guide pinholes and three loop coils one are a pair of
Should be arranged, be fitted with guide pin in each guide pinhole, the lead-in wire terminal and leading-out terminal of each loop coil respectively with it is right
The one group of guide pin inner end welding answered.
2. three-phase integrated straight-through current transformer as described in claim 1, it is characterised in that: be successively arranged on the guide pin
There are installation cylinder and limit cylinder.
3. three-phase integrated straight-through current transformer as claimed in claim 2, it is characterised in that: the installation cylinder is embedded in
In the guide pinhole, the installation cylinder and the guide pinhole are interference fitted.
4. three-phase integrated straight-through current transformer as claimed in claim 2 or claim 3, it is characterised in that: outside the limit cylinder
Week is coated with epoxide-resin glue.
5. three-phase integrated straight-through current transformer as described in claim 1, it is characterised in that: the magnetic core of the coil is soft
Magnetic material, enameled wire are the copper wire of surface plating paint.
6. three-phase integrated straight-through current transformer as claimed in claim 1 or 5, it is characterised in that: twined on the outside of the coil
It is wound with Kapton Tape.
7. three-phase integrated straight-through current transformer as described in claim 1, it is characterised in that: the outer end of the guide pin is stretched out
Outside shell, the circuit interface as mutual inductor.
8. three-phase integrated straight-through current transformer as described in claim 1, it is characterised in that: further include encapsulating in the cavity
Encapsulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424035.2A CN109616305A (en) | 2018-11-27 | 2018-11-27 | A kind of three-phase integrated straight-through current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424035.2A CN109616305A (en) | 2018-11-27 | 2018-11-27 | A kind of three-phase integrated straight-through current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109616305A true CN109616305A (en) | 2019-04-12 |
Family
ID=66004752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811424035.2A Pending CN109616305A (en) | 2018-11-27 | 2018-11-27 | A kind of three-phase integrated straight-through current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109616305A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021115360A1 (en) * | 2019-12-11 | 2021-06-17 | 济南铂晶电子科技有限公司 | Three-phase integrated current transformer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001257120A (en) * | 2000-03-09 | 2001-09-21 | Soshin Electric Co Ltd | Multiple cylindrical choke coil |
| CN1692457A (en) * | 2002-12-13 | 2005-11-02 | 松下电器产业株式会社 | Multiple choke coil and electronic equipment using the same |
| CN1312707C (en) * | 2003-03-26 | 2007-04-25 | 松下电器产业株式会社 | Choke and electronic appartus using the same |
| JP2011004567A (en) * | 2009-06-22 | 2011-01-06 | Mitsubishi Electric Corp | Gas-insulated switchgear |
| CN202352508U (en) * | 2011-11-18 | 2012-07-25 | 江苏安科瑞电器制造有限公司 | Low-voltage combined three-phase current transformer |
| CN105575643A (en) * | 2016-02-29 | 2016-05-11 | 济南铂晶电子科技有限公司 | Three-phase current transformer |
| CN205564519U (en) * | 2016-01-06 | 2016-09-07 | 浙江天际互感器有限公司 | Quick plug split type current transformer |
| CN205582719U (en) * | 2016-02-29 | 2016-09-14 | 济南铂晶电子科技有限公司 | Interior three -phase integral type voltage transformer who establishes resistance |
| CN106816288A (en) * | 2016-12-29 | 2017-06-09 | 上海吴淞电气实业有限公司 | The glue-pouring method and its transformer of a kind of threephase current transformer |
-
2018
- 2018-11-27 CN CN201811424035.2A patent/CN109616305A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001257120A (en) * | 2000-03-09 | 2001-09-21 | Soshin Electric Co Ltd | Multiple cylindrical choke coil |
| CN1692457A (en) * | 2002-12-13 | 2005-11-02 | 松下电器产业株式会社 | Multiple choke coil and electronic equipment using the same |
| CN1312707C (en) * | 2003-03-26 | 2007-04-25 | 松下电器产业株式会社 | Choke and electronic appartus using the same |
| JP2011004567A (en) * | 2009-06-22 | 2011-01-06 | Mitsubishi Electric Corp | Gas-insulated switchgear |
| CN202352508U (en) * | 2011-11-18 | 2012-07-25 | 江苏安科瑞电器制造有限公司 | Low-voltage combined three-phase current transformer |
| CN205564519U (en) * | 2016-01-06 | 2016-09-07 | 浙江天际互感器有限公司 | Quick plug split type current transformer |
| CN105575643A (en) * | 2016-02-29 | 2016-05-11 | 济南铂晶电子科技有限公司 | Three-phase current transformer |
| CN205582719U (en) * | 2016-02-29 | 2016-09-14 | 济南铂晶电子科技有限公司 | Interior three -phase integral type voltage transformer who establishes resistance |
| CN106816288A (en) * | 2016-12-29 | 2017-06-09 | 上海吴淞电气实业有限公司 | The glue-pouring method and its transformer of a kind of threephase current transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021115360A1 (en) * | 2019-12-11 | 2021-06-17 | 济南铂晶电子科技有限公司 | Three-phase integrated current transformer |
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| PB01 | Publication | ||
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Application publication date: 20190412 |