CN105935668A - Quick sorting instrument for current transformer iron cores - Google Patents
Quick sorting instrument for current transformer iron cores Download PDFInfo
- Publication number
- CN105935668A CN105935668A CN201610372608.6A CN201610372608A CN105935668A CN 105935668 A CN105935668 A CN 105935668A CN 201610372608 A CN201610372608 A CN 201610372608A CN 105935668 A CN105935668 A CN 105935668A
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- current transformer
- loop
- energized circuit
- contact
- excitation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/344—Sorting according to other particular properties according to electric or electromagnetic properties
Abstract
The invention discloses a quick sorting instrument for current transformer iron cores, and relates to the technical field of electricity measuring instruments. The quick sorting instrument can eliminate complex procedures of winding mounting and demounting, shorten working hours, and improve work efficiency, and is simple to operate and low in cost. The quick sorting instrument is characterized by comprising an excitation circuit, a measurement circuit and a supporting table, wherein an excitation source is connected to the excitation circuit; a gauge is connected to the measurement circuit; and an excitation contact and a measurement contact are arranged on the supporting table separately. The quick sorting instrument is mainly used for sorting the current transformer iron cores.
Description
Technical field
The present invention relates to electricity measuring Instrument field, particularly relate to a kind of quick sorter of current transformer core.
Background technology
Current transformer (Current transformer) is a kind of common equipment in electric measurement and relay protection, is made up of iron core and winding.Core loss is the invalid energy that the core material of unit mass is consumed under action of alternating magnetic field, is the key factor weighing a current transformer performance, therefore, general by the loss of iron core in measurement current transform er, sorts it.
In prior art, iron core method for separating is: coiling armature winding and secondary windings on iron core to be measured；Use magnetic material tester to apply alternating current at the armature winding of iron core to be measured, make to produce on secondary windings induced voltage；Electronic scale is utilized to obtain the quality of iron core to be measured；The loss numerical value of this iron core to be measured is calculated by loss formula；According to calculating the loss numerical value obtained, this iron core to be measured is sorted.
Above by measuring the method that iron core is sorted by core loss, need coiling armature winding and secondary windings on iron core to be measured, and need again to remove armature winding and secondary windings after measurement terminates, process is complicated, workload is big, expends man-hour, inefficiency；Using magnetic material tester apply alternating current at the armature winding of iron core to be measured and utilize electronic scale to obtain the quality of iron core to be measured, measuring instrument cost is high, and operation complexity, further results in work efficiency low.
Summary of the invention
The present invention provides a kind of quick sorter of current transformer core, achieves energized circuit by excitation contact respectively with metering contact and succinctly connects with measure loop, eliminates the complicated operation that winding is installed and removed, save man-hour, improve work efficiency；Energized circuit connects excitation source, measures loop connection measurement table, and instrument cost is low, and good integrity is simple to operate.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
The present invention provides a kind of quick sorter of current transformer core, including: energized circuit, measure loop and support platform；Described energized circuit connects excitation source, described measurement loop connects and measures table；Described support platform is respectively provided with excitation contact and metering contact.
Described excitation contact connects described energized circuit, and described metering contact connects described measurement loop；Described excitation source output excitation signal, described induced signal numerical value measured by described measurement table, in order to sorts described iron core to be measured according to described induced signal numerical value.
In conjunction with above-mentioned, the quick sorter of described current transformer core, described energized circuit comprises the first energized circuit and the second energized circuit, described first energized circuit and described second energized circuit and connects the described energized circuit of formation by described excitation contact.
Described measurement loop comprises the first measurement loop and second and measures loop, and described first measures loop and described second measures loop by the described measurement loop of described metering contact connection formation.
In conjunction with above-mentioned, the quick sorter of described current transformer core, also include: measurement bay, described measurement bay is positioned at above described support platform, described first energized circuit and first is measured loop and is each attached on measurement bay.
In conjunction with above-mentioned, the quick sorter of described current transformer core, also include: fixed mount and articulating device, described fixed mount is positioned at described support platform both sides, described articulating device is arranged at inside described fixed mount upper end；Described measurement bay is connected to fixed mount by articulating device.
In conjunction with above-mentioned, the quick sorter of described current transformer core, described articulating device is slide rail or stretch cord.
In conjunction with above-mentioned, the quick sorter of described current transformer core, described excitation contact is identical with described metering contact structure, is U-shape structure.
In conjunction with above-mentioned, the quick sorter of described current transformer core, described excitation contact fixing connection the most corresponding with described metering contact lower end the second energized circuit and the second measurement loop, upper end is equipped with the portion of removably connecting.
In conjunction with above-mentioned, the quick sorter of described current transformer core, described in the portion of removably connecting be X shape elastic piece structure.
In conjunction with above-mentioned, the quick sorter of described current transformer core, described excitation source is connected in described energized circuit；Described measurement table is connected in parallel in described measurement loop.
In conjunction with above-mentioned, the quick sorter of described current transformer core, described excitation contact and described metering contact are fixedly connected in described support platform.
The quick sorter of a kind of current transformer core that the present invention provides, achieves energized circuit by excitation contact respectively with metering contact and succinctly connects with measure loop, eliminate the complicated operation that winding is installed and removed, save man-hour, improve work efficiency；Energized circuit connects excitation source, measures loop connection measurement table, and instrument cost is low, and good integrity is simple to operate.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, in describing embodiment below, the required accompanying drawing used is briefly described.
Fig. 1 is a kind of current transformer core quick sorter structure composition schematic diagram in the embodiment of the present invention 1；
Fig. 2 is a kind of current transformer core quick sorter structure composition schematic diagram in the embodiment of the present invention 2；
Fig. 3 is energized circuit and measurement loop connection diagram in the embodiment of the present invention 2.
In figure, 1. energized circuit, 11. excitation sources, 12. first energized circuits, 13. second energized circuits, 2. measure loop, 21. measure table, and 22. first measure loop, and 23. second measure loop, 3. support platform, 31. excitation contacts, 32. metering contacts, 33. removably connect portion, 4. measurement bay, 5. fixed mount, 6. articulating device.
Detailed description of the invention
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 clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment
1
The embodiment of the present invention provides a kind of quick sorter of current transformer core, as it is shown in figure 1, include: energized circuit 1, measures loop 2 and supports platform 3；Described energized circuit 1 connects excitation source 11, described measurement loop 2 connects and measures table 21；Described support platform 3 is respectively provided with excitation contact 31 and metering contact 32.Excitation source 11 is alternating current power supply, is connected in energized circuit 1；Measuring table 21 is voltmeter, is connected in parallel in measurement loop 2.Supporting platform 3 is isolation material, such as timber, plastics etc..
Current transformer (Current transformer) is based on electromagnetic induction principle work, and bigger primary current is converted to less secondary current.Current transformer is made up of iron core and winding, and winding is wound on iron core, and winding is divided into a winding and Secondary Winding.Energized circuit 1 in the present embodiment is equivalent to a winding, measure loop 2 and be equivalent to Secondary Winding, based on electromagnetic induction principle, when excitation source 11 exports excitation AC signal in energized circuit 1, measuring in loop 2 and will produce induced voltage signal, this induced voltage signal is recorded by measuring table 21.
Wherein, excitation contact 31 removably connects energized circuit 1 and measures loop 2 with metering contact 32 correspondence, excitation contact 31 is identical with metering contact 32 structure, it is U-shape structure, top is provided with X shape shell fragment, treats one end of connected loop for clamping, and bottom is fixed and connected the other end treating connected loop, excitation contact 31 and metering contact 32 be can conductive material, it is achieved thereby that treat the connection of connected loop.Such as: during connection energized circuit 1: energized circuit 1 one end has attached to bottom excitation contact 31, only the other end of energized circuit 1 need to be placed in the middle part of the X shape shell fragment of excitation contact 31 and clamp, the succinct connection of energized circuit 1 can be realized, in like manner, it is possible to realize measuring the succinct connection in loop 2.
Iron core to be measured is the iron core of current transformer, common both passes through iron core hollow position to be measured, according to electromagnetic induction principle for hollow cylinder, energized circuit 1 and measurement loop 2, when applying exciting current signal in energized circuit 1, measure in loop 2 and will produce induced voltage signal.
Core loss is the invalid energy that the core material of unit mass is consumed under action of alternating magnetic field, is the key factor weighing a current transformer performance, generally judges that this current transformer is the most qualified by detection current transformer core loss.Core loss computing formula is: Ps=U × I × M, and in formula, I is exciting current numerical value；U is induced voltage numerical value, M be iron core quality to be measured, i.e. core loss Ps be exciting current I, induced voltage U and the product of iron core mass M to be measured.General, the exciting current signal I of AC excitation source 11 output is known fixed, iron core mass M numerical value with batch same specification current transformer is of substantially equal again, then can be obtained by core loss computing formula: core loss Ps is directly proportional to induced voltage U, therefore can judge that current iron core to be measured is the most qualified according to the induced voltage signal U measured.
Hereinafter operation principle of the present invention will be briefly described:
Iron core to be measured is placed on support platform 3, connect energized circuit 1 by excitation contact 31 with metering contact 32 correspondence respectively and measure loop 2, the excitation source 11 output AC signal of telecommunication, measurement loop 2 is made to produce induced voltage signal, induced voltage signal numerical value measured by measurement table 21, judge that iron core to be measured is the most qualified according to induced signal numerical value, it is achieved the sorting of iron core to be measured.
Such as: the default qualified threshold range of A batch current transformer core is 0mV 30mV, the induced voltage recording iron core a is 15mV, the induced voltage of iron core b is 40mV, within then the induced voltage 15mV of iron core a is in default qualified threshold range 0mV 30mV, i.e. without departing from default qualified threshold range, then iron core a is qualified iron core.The induced voltage of iron core b is that 40mV exceeds default qualified threshold range 0mV 30mV, then iron core b is defective iron core.
The quick sorter of a kind of current transformer core that the present invention provides, including: energized circuit, measure loop and support platform, achieving energized circuit by excitation contact with metering contact and connect with the succinct of measurement loop；Energized circuit connects excitation AC source, measures loop connection voltage measurement table, compared to prior art, eliminates the complicated operation that winding is installed and removed, saves man-hour, improve work efficiency；Simple to operate, good integrity, instrument cost is low.
Embodiment
2
The embodiment of the present invention provides a kind of quick sorter of current transformer core, as in figure 2 it is shown, include: energized circuit 1, measures loop 2, supports platform 3, measurement bay 4, fixed mount 5 and articulating device 6.
Described energized circuit 1 connects excitation source 11, described measurement loop 2 connects and measures table 21；Described support platform 3 is respectively provided with excitation contact 31 and metering contact 32.Excitation source 11 is milliampere level alternating current power supply, is connected in energized circuit, and measuring table 21 is voltmeter, is connected in parallel in measurement loop 2.
As it is shown on figure 3, in order to reduce measurement error, measure loop 2 and be symmetrically distributed in core center axle both sides to be measured, then the present embodiment comprises 2 excitation contacts 31 and 4 metering contacts 32, is both secured to support platform 3.
Wherein, first energized circuit 12 and the first measurement loop 22 are each attached on measurement bay 4, measurement bay 4 is positioned at above support platform 3, fixed mount 5 is positioned at support platform 3 both sides, articulating device 6 is arranged at inside fixed mount 5 upper end, measurement bay 4 is connected to fixed mount 5 by articulating device 6, the present embodiment articulating device 6 selects slide rail, when exerting a force downwards on measurement bay 4, measurement bay 4 will drive the first energized circuit 12 and the first measurement loop 22 end to be connected to be moved downward at excitation contact 31 and metering contact 32, makes energized circuit 1 connect with measuring loop 2.In the present embodiment, measurement bay 4, fixed mount 5 and articulating device 6 are isolation material, such as timber, plastics etc..
Specifically, iron core to be measured is placed on support platform 3, press measurement bay 4, measurement bay 4 is made to drive the first energized circuit 12 and the first measurement loop 22 end to be connected to move down, make the first energized circuit 12 connect formation energized circuit 1 with the second energized circuit 13 by excitation contact 31, make the first measurement loop 22 connect formation by metering contact 32 with the second measurement loop 23 and measure loop 2.The excitation source 11 output AC signal of telecommunication, makes to produce on measurement loop 2 induced voltage signal, and measurement table 21 is measured induced voltage signal numerical value, judged that iron core to be measured is the most qualified according to induced signal numerical value, it is achieved the sorting of iron core to be measured.
Herein it should be understood that excitation contact 31 and the concrete structure of metering contact 32, energized circuit 1 and the mode of communicating in measurement loop 2 and iron core grading principle to be measured etc. are repeated no more by the present embodiment, can refer to corresponding content in embodiment 1.
The quick sorter of a kind of current transformer core that the present invention provides, including: energized circuit, measure loop and support platform, achieve energized circuit by excitation contact and metering contact and measure the succinct connection in loop；Energized circuit connects excitation AC source, measures loop connection voltage measurement table, compared to prior art, eliminates the complicated operation that winding is installed and removed, saves man-hour, improve work efficiency；Simple to operate, good integrity, instrument cost is low.
Further, invention increases measurement bay, fixed mount and articulating device, by pressing measurement bay, it is achieved that energized circuit is dynamically connected certainly with measurement loop, simple to operate, and efficiency is high.
The above; being only the detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (10)
1. the quick sorter of current transformer core, it is characterised in that including: energized circuit (1), measures loop (2) and supports platform (3)；Described energized circuit (1) connects in excitation source (11), described measurement loop (2) to connect and measure table (21)；Described support platform (3) is respectively provided with excitation contact (31) and metering contact (32)；
Described excitation contact (31) connects described energized circuit (1), and described metering contact (32) connects described measurement loop (2)；Described excitation source (11) output excitation signal, described measurement table (21) measures described induced signal numerical value, in order to sort iron core to be measured according to described induced signal numerical value.
The quick sorter of current transformer core the most according to claim 1, it is characterised in that:
Described energized circuit (1) comprises the first energized circuit (12) and the second energized circuit (13), described first energized circuit (12) and described second energized circuit (13) and connects the described energized circuit of formation (1) by described excitation contact (31)；
Described measurement loop (2) comprises the first measurement loop (22) and second and measures loop (23), and described first measures loop (22) and described second measures loop (23) by described metering contact (32) the connection described measurement loop (2) of formation.
The quick sorter of current transformer core the most according to claim 2, it is characterised in that also include: measurement bay (4)；
Described measurement bay (4) is positioned at described support platform (3) top；Described first energized circuit (12) and described first is measured loop (22) and is each attached on described measurement bay (4).
The quick sorter of current transformer core the most according to claim 3, it is characterised in that also include: fixed mount (5) and articulating device (6)；
Described fixed mount (5) is positioned at described support platform (3) both sides, and described articulating device (6) is arranged at inside described fixed mount (5) upper end；Described measurement bay (4) is connected to described fixed mount (5) by described articulating device (6).
The quick sorter of current transformer core the most according to claim 4, it is characterised in that:
Described articulating device (6) is slide rail or stretch cord.
The quick sorter of current transformer core the most according to claim 2, it is characterised in that:
Described excitation contact (31) is identical with described metering contact (32) structure, is U-shape structure.
The quick sorter of current transformer core the most according to claim 2, it is characterised in that:
Described excitation contact (31) fixing connect second energized circuit (13) and second the most corresponding with described metering contact (32) lower end measures loop (23), and upper end is equipped with the portion of removably connecting (33).
The quick sorter of current transformer core the most according to claim 7, it is characterised in that:
The described portion that removably connects (33) is X shape elastic piece structure.
The quick sorter of current transformer core the most according to claim 1, it is characterised in that:
Described excitation source (11) is connected in described energized circuit (1)；Described measurement table (21) is connected in parallel in described measurement loop (2).
The quick sorter of current transformer core the most according to claim 1, it is characterised in that:
Described excitation contact (31) and described metering contact (32) are fixedly connected in described support platform (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372608.6A CN105935668B (en) | 2016-05-31 | 2016-05-31 | A kind of quick sorter of current transformer core |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610372608.6A CN105935668B (en) | 2016-05-31 | 2016-05-31 | A kind of quick sorter of current transformer core |
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| Publication Number | Publication Date |
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| CN105935668A true CN105935668A (en) | 2016-09-14 |
| CN105935668B CN105935668B (en) | 2018-06-19 |
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| CN1811483A (en) * | 2005-04-21 | 2006-08-02 | 黄汝明 | Method for detecting iron-core magnetic induction maximum value and design method of non-load power |
| CN101303394A (en) * | 2008-07-09 | 2008-11-12 | 天津市天发重型水电设备制造有限公司 | Device and method for testing hydroelectric generating set electricity generator stator core |
| CN102279311A (en) * | 2011-06-30 | 2011-12-14 | 重庆市电力公司江津供电局 | Method for online detection and total loss determination of neutral current of distribution transformer |
| CN202330565U (en) * | 2011-11-08 | 2012-07-11 | 佛山市中研非晶科技股份有限公司 | C-shaped iron core loss testing tool with limiting function |
| CN203838323U (en) * | 2014-03-28 | 2014-09-17 | 云南电力试验研究院（集团）有限公司电力研究院 | Current transformer transient characteristic tester |
| CN105388377A (en) * | 2015-11-09 | 2016-03-09 | 北京信息科技大学 | Detection apparatus of stator iron core aging of old motor |
-
2016
- 2016-05-31 CN CN201610372608.6A patent/CN105935668B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811483A (en) * | 2005-04-21 | 2006-08-02 | 黄汝明 | Method for detecting iron-core magnetic induction maximum value and design method of non-load power |
| CN101303394A (en) * | 2008-07-09 | 2008-11-12 | 天津市天发重型水电设备制造有限公司 | Device and method for testing hydroelectric generating set electricity generator stator core |
| CN102279311A (en) * | 2011-06-30 | 2011-12-14 | 重庆市电力公司江津供电局 | Method for online detection and total loss determination of neutral current of distribution transformer |
| CN202330565U (en) * | 2011-11-08 | 2012-07-11 | 佛山市中研非晶科技股份有限公司 | C-shaped iron core loss testing tool with limiting function |
| CN203838323U (en) * | 2014-03-28 | 2014-09-17 | 云南电力试验研究院（集团）有限公司电力研究院 | Current transformer transient characteristic tester |
| CN105388377A (en) * | 2015-11-09 | 2016-03-09 | 北京信息科技大学 | Detection apparatus of stator iron core aging of old motor |
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| CN105935668B (en) | 2018-06-19 |
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