CN202134397U - Transformation ratio adjustable type current mutual inductor - Google Patents
Transformation ratio adjustable type current mutual inductor Download PDFInfo
- Publication number
- CN202134397U CN202134397U CN201120269237U CN201120269237U CN202134397U CN 202134397 U CN202134397 U CN 202134397U CN 201120269237 U CN201120269237 U CN 201120269237U CN 201120269237 U CN201120269237 U CN 201120269237U CN 202134397 U CN202134397 U CN 202134397U
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- secondary winding
- winding coil
- adjustable type
- load voltage
- voltage ratio
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses a transformation ratio adjustable type current mutual inductor comprising a mutual inductance part and a current detection part connected with the mutual inductance part. The mutual inductance part comprises an annular and closed iron core and a secondary winding coil arranged at the periphery of the iron core. The secondary winding coil is electrically connected with the current detection part and is winded on the iron core in a spiral shape. The current detection part is provided with a fixed end and a movable end which are electrically connected with the secondary winding coil. The fixed end is fixedly connected with one end of the secondary winding coil, the movable end is arranged at the other end of the secondary winding coil, and the movable end is a movable ring sleeved at the periphery of the secondary winding coil and is electrically connected with the secondary winding coil. Compared with the traditional mutual inductor, the transformation ratio adjustable type current mutual inductor breaks away from the fixed transformation ratio and is convenient for a user to adjust the transformation ratio in real time so as to be coordinated with actual use current. With the adoption of the transformation ratio adjustable type current mutual inductor, electro-hydraulic measurement is more accurate, the current mutual inductor is not easy to be damaged, and the service life of the current mutual inductor is prolonged.
Description
Technical field
The utility model relates to a kind of current transformer, thereby more particularly is meant a kind of number of turns adjusting no-load voltage ratio through adjusting secondary winding coil, realizes the more no-load voltage ratio adjustable type current transformer of exact current measurement.
Background technology
Electric current was lower when at present the terminal power distribution cabinet initial stage used, and instrument transformer is higher no-load voltage ratio for cooperating the main switch type selecting, and the drive current of appearance is not enough and to cause current indication be 0 or the not enough situation of precision; Use if select for use the lower instrument transformer of no-load voltage ratio to satisfy the initial stage, when then the later stage load drops into successively, the instrument transformer off-capacity can occur, cause instrument transformer to burn out or even more serious accident.
In order to address the above problem, the inventor designs a kind of no-load voltage ratio adjustable type electric current with innovating and flows device mutually.
The utility model content
The purpose of the utility model is to overcome the defective of prior art, provides a kind of no-load voltage ratio adjustable type electric current to flow device mutually.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
No-load voltage ratio adjustable type electric current flows device mutually, comprises mutual inductance parts and the current detecting part that connects with the mutual inductance parts, and described mutual inductance parts comprise the iron core and the secondary winding coil of being located at the iron core periphery of ring seal; Described secondary winding coil electrically connects with current detecting part; It is characterized in that described secondary winding coil helical form is being wrapped on the iron core, described current detecting part is provided with stiff end and the movable end that electrically connects with the secondary winding coil; One end of described stiff end and secondary winding coil is fixedly connected, and described movable end is located at the other end of secondary winding coil, and movable end is a loose collar that is sheathed on secondary winding coil periphery and electrically connects with the secondary winding coil.
Its further technical scheme is: described iron core is fixed annular core, or, split type pincerlike iron core.
Its further technical scheme is: each circle coiling of that end that said secondary winding coil connects with loose collar is provided with the electric contact of same position, and described loose collar is provided with the electric connecting plate that contacts with electric contact.
Its further technical scheme is: the coiling that is provided with electric contact is 1/10th to 1/2nd of a secondary winding wire circle.
Its further technical scheme is: also comprise the insulation crust of being located at secondary winding coil periphery, described loose collar is sheathed on the periphery of insulation crust, and described insulation crust is provided with the groove that is used to pass with the electric connecting plate that electrically connects of winding the line.
Its further technical scheme is: also comprise the lock-screw of being with hand rotating part, described loose collar is provided with the lock-screw hole.
Its further technical scheme is: described insulation crust is provided with no-load voltage ratio sign or range sign in the side of groove.
Its further technical scheme is: said loose collar is provided with the electricity that is used for ccontaining electric connecting plate and connects stepped hole, and described electric connecting plate is to place electricity to connect the end cap that has the shaft shoulder in the stepped hole; Comprise that also being used for ending the spring that supports end cap ends the nut that supports spring with being used for, described electricity connects stepped hole and is provided with the threaded portion that connects with nut thread.
The utility model beneficial effect compared with prior art is: the more traditional instrument transformer of the utility model current transformer has broken away from fixedly no-load voltage ratio, makes things convenient for user real time adjustment no-load voltage ratio to cooperate actual use electric current; Make electric hydraulic measurement more accurate, not fragile current transformer, the useful life of improving current transformer.
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.
Description of drawings
Fig. 1 flows the sketch map of implement body embodiment mutually for the utility model no-load voltage ratio adjustable type electric current;
Fig. 2 flows the cutaway view of the movable block of implement body embodiment mutually for the utility model no-load voltage ratio adjustable type electric current.
Description of reference numerals
1 mutual inductance parts, 11 iron cores
12 secondary winding coils, 121 electric contacts
13 insulation crusts, 14 grooves
2 current detecting parts
21 stiff ends, 22 movable ends
3 loose collars, 31 lock-screws
32 electricity connect stepped hole 321 threaded portions
33 end caps, 34 springs
35 nut A Primary Conductor
Embodiment
In order more to make much of the technology contents of the utility model, below in conjunction with specific embodiment the technical scheme of the utility model is further introduced and explanation, but be not limited to this.
To shown in Figure 2, the utility model no-load voltage ratio adjustable type electric current flows device mutually, comprises mutual inductance parts 1 and the current detecting part 2 that connects with mutual inductance parts 1 like Fig. 1, and mutual inductance parts 1 comprise the iron core 11 and the secondary winding coil 12 of being located at iron core 11 peripheries of ring seal; Secondary winding coil 12 electrically connects with current detecting part 2; Secondary winding coil 12 helical forms are being wrapped on the iron core 11, and current detecting part 2 is provided with the stiff end 21 and movable end 22 that electrically connects with secondary winding coil 12; Stiff end 21 is fixedly connected with an end of secondary winding coil 12, and movable end 22 is located at the other end of secondary winding coil 12, and movable end 22 is a loose collar 3 that is sheathed on secondary winding coil 12 peripheries and electrically connects with secondary winding coil 12.In the present embodiment, iron core 11 is fixed annular core, and measured conductor need therefrom pass.Each circle coiling of that end that secondary winding coil 12 connects with loose collar 3 is provided with the electric contact 121 of same position, and loose collar 3 is provided with the electric connecting plate that contacts with electric contact 121.The coiling that is provided with electric contact 121 is 1/10th to 1/2nd of a secondary winding wire circle.Also comprise the insulation crust 13 of being located at secondary winding coil 12 peripheries; Loose collar 3 is sheathed on the periphery of insulation crust 13 and along insulation crust slide (realize that with this coiling of diverse location connects with the electrical of loose collar, thereby the number of active coils of change secondary winding coil).Insulation crust 13 is provided with the groove 14 that is used to pass the electric connecting plate that electrically connects with the electric contact that winds the line.Also comprise the lock-screw 31 of being with hand rotating part, loose collar is provided with the lock-screw hole that cooperates with lock-screw 31.Insulation crust 13 is provided with no-load voltage ratio sign or range sign (so that the clear number of turns that transfers to and so on no-load voltage ratio or winding coil of operator) in the side of groove 14.Loose collar 3 is provided with the electricity that is used for ccontaining electric connecting plate and connects stepped hole 32, and electric connecting plate is to place electricity to connect the end cap that has the shaft shoulder 33 in the stepped hole 32; Also comprise the spring 34 that is used for end supporting end cap 33 and be used for ending the nut 35 that supports spring 34 that electricity connects stepped hole 32 and is provided with the threaded portion 321 with nut 35 thread connection.
In other embodiment, iron core also can adopt split type pincerlike iron core.Current detecting part both can select the digital display form, also can select mechanical type indicator form for use.Can also further adopt the stiff end that current detecting part is fixed on iron core.Make it into as a whole.
In sum, the more traditional instrument transformer of the utility model current transformer has broken away from fixedly no-load voltage ratio, makes things convenient for user real time adjustment no-load voltage ratio to cooperate actual use electric current; Make electric hydraulic measurement more accurate, not fragile current transformer, the useful life of improving current transformer.
The above only further specifies the technology contents of the utility model with embodiment; So that the reader is more readily understood; But do not represent the execution mode of the utility model to only limit to this, any technology of doing according to the utility model is extended or recreation, all receives the protection of the utility model.The protection range of the utility model is as the criterion with claims.
Claims (9)
1. no-load voltage ratio adjustable type electric current flows device mutually, comprises mutual inductance parts and the current detecting part that connects with the mutual inductance parts, and described mutual inductance parts comprise the iron core and the secondary winding coil of being located at the iron core periphery of ring seal; Described secondary winding coil electrically connects with current detecting part; It is characterized in that described secondary winding coil helical form is being wrapped on the iron core, described current detecting part is provided with stiff end and the movable end that electrically connects with the secondary winding coil; One end of described stiff end and secondary winding coil is fixedly connected, and described movable end is located at the other end of secondary winding coil, and movable end is a loose collar that is sheathed on secondary winding coil periphery and electrically connects with the secondary winding coil.
2. no-load voltage ratio adjustable type electric current according to claim 1 flows device mutually, it is characterized in that described iron core is fixed annular core.
3. no-load voltage ratio adjustable type electric current according to claim 1 flows device mutually, it is characterized in that described iron core is split type pincerlike iron core.
4. flow device mutually according to claim 2 or 3 described no-load voltage ratio adjustable type electric currents; It is characterized in that each circle coiling of that end that said secondary winding coil connects with loose collar is provided with the electric contact of same position, described loose collar is provided with the electric connecting plate that contacts with electric contact.
5. no-load voltage ratio adjustable type electric current according to claim 4 flows device mutually, and the coiling that it is characterized in that being provided with electric contact is 1/10th to 1/2nd of a secondary winding wire circle.
6. no-load voltage ratio adjustable type electric current according to claim 5 flows device mutually; It is characterized in that also comprising the insulation crust of being located at secondary winding coil periphery; Described loose collar is sheathed on the periphery of insulation crust, and described insulation crust is provided with the groove that is used to pass with the electric connecting plate that electrically connects of winding the line.
7. no-load voltage ratio adjustable type electric current according to claim 6 flows device mutually, it is characterized in that also comprising the lock-screw of being with hand rotating part, and described loose collar is provided with the lock-screw hole.
8. no-load voltage ratio adjustable type electric current according to claim 7 flows device mutually, it is characterized in that described insulation crust is provided with no-load voltage ratio sign or range sign in the side of groove.
9. no-load voltage ratio adjustable type electric current according to claim 8 flows device mutually, it is characterized in that said loose collar is provided with the electricity that is used for ccontaining electric connecting plate and connects stepped hole, and described electric connecting plate is to place electricity to connect the end cap that has the shaft shoulder in the stepped hole; Comprise that also being used for ending the spring that supports end cap ends the nut that supports spring with being used for, described electricity connects stepped hole and is provided with the threaded portion that connects with nut thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120269237U CN202134397U (en) | 2011-07-27 | 2011-07-27 | Transformation ratio adjustable type current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120269237U CN202134397U (en) | 2011-07-27 | 2011-07-27 | Transformation ratio adjustable type current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202134397U true CN202134397U (en) | 2012-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120269237U Expired - Lifetime CN202134397U (en) | 2011-07-27 | 2011-07-27 | Transformation ratio adjustable type current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202134397U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050264A (en) * | 2012-12-12 | 2013-04-17 | 北京航空航天大学 | Multiple-transformation-ratio selectable outdoor open-type current transformer |
| WO2014012241A1 (en) * | 2012-07-17 | 2014-01-23 | Ning Wenyuan | Side-mounted current transform measuring structure and measuring method |
| CN104637660A (en) * | 2015-02-06 | 2015-05-20 | 四川蓝讯宝迩电子科技有限公司 | Current transformer with transformation ratio capable of being adjusted through rotation |
| CN107782946A (en) * | 2016-08-31 | 2018-03-09 | 天津瑞能电气有限公司 | A kind of wind-power electricity generation frequency conversion device detection great current mutual inductor |
| CN113628863A (en) * | 2021-08-12 | 2021-11-09 | 德清盖格电子有限公司 | Zero sequence current transformer |
-
2011
- 2011-07-27 CN CN201120269237U patent/CN202134397U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014012241A1 (en) * | 2012-07-17 | 2014-01-23 | Ning Wenyuan | Side-mounted current transform measuring structure and measuring method |
| CN103050264A (en) * | 2012-12-12 | 2013-04-17 | 北京航空航天大学 | Multiple-transformation-ratio selectable outdoor open-type current transformer |
| CN104637660A (en) * | 2015-02-06 | 2015-05-20 | 四川蓝讯宝迩电子科技有限公司 | Current transformer with transformation ratio capable of being adjusted through rotation |
| CN107782946A (en) * | 2016-08-31 | 2018-03-09 | 天津瑞能电气有限公司 | A kind of wind-power electricity generation frequency conversion device detection great current mutual inductor |
| CN113628863A (en) * | 2021-08-12 | 2021-11-09 | 德清盖格电子有限公司 | Zero sequence current transformer |
| CN113628863B (en) * | 2021-08-12 | 2023-01-13 | 德清盖格电子有限公司 | Zero sequence current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 519000 Guangdong Province, Zhuhai City West ten road Nanping Town Xiangzhou District No. six building D screen Patentee after: Zhuhai Fenglan Industrial Co., Ltd. Address before: Xiangzhou District Nanping Technology Industrial Park Road 519000 west two screen in Guangdong province Zhuhai City No. 10 building two floor Patentee before: Zhuhai Fenglan Industrial Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |