CN103064042A - Measuring model and measuring method for performance of silicon steel sheets on transformer product - Google Patents
Measuring model and measuring method for performance of silicon steel sheets on transformer product Download PDFInfo
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- CN103064042A CN103064042A CN2012105781431A CN201210578143A CN103064042A CN 103064042 A CN103064042 A CN 103064042A CN 2012105781431 A CN2012105781431 A CN 2012105781431A CN 201210578143 A CN201210578143 A CN 201210578143A CN 103064042 A CN103064042 A CN 103064042A
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Abstract
The invention relates to a measuring model and a measuring method for performance of silicon steel sheets on a transformer product, and belongs to the technical fields of transformer material simulation and electromagnetic field application. The technical scheme includes that the measuring method for performance of the silicon steel sheets on the transformer product comprises using a hollow coil structure similar to a epstein square to fill the silicon steel sheets so as to measure the performance of the silicon steel sheets in different upgrading forms, changing magnitude of pressing force exerted on four corner portions, investigating influence caused on a core construction formed by the silicon steel sheets by the pressing force, using a variable-frequency power source to carry out magnetic performance measurements on different structures under different frequency, using temperature control equipment to carry out magnetic performance measurements on the core construction under different temperature, accomplishing measurements of influence degree of various measuring working conditions on corner portion lap joints, stepping lap joints or butt joint seams by using two model which are different in the length of magnetic paths and the same in width of the magnetic paths. The measuring method for performance of the silicon steel sheets on the transformer product is capable of accomplishing the vast majority of silicon steel sheet magnetic performance researches on one model, and facilitates accomplishment of concentrated and in-depth researches on a structure of a transformer and material magnetic performance in laboratories.
Description
Technical field
The present invention relates to the models and methods of siliconized plate performance on a kind of measuring transformer product, belong to transformer material simulation, electromagnetic field applied technical field.
Background technology
At present, the one-dimensional magnetic measurement of siliconized plate (electrical sheet) is undertaken by the 25cm epstein frame, has provided clear and definite specifications of surveys in GB and IEC standard.And the magnetic circuit, the joint form that are applied in the siliconized plate on the power transformer product all are different from the situation under the present canonical measure condition, background technology can't accurately be finished the siliconized plate performance measurement on the power transformer product, how to understand the difference of canonical measure and practical application, fully grasping the magnetic property of siliconized plate on the transformer, is the technical matters that this area needs to be resolved hurrily.
Summary of the invention
The object of the invention provides the models and methods of siliconized plate performance on a kind of measuring transformer product, finishing the siliconized plate magnetic property of various working (comprising that different frequency, different temperatures, bight are subjected to different pressures, difformity sample to finish different joint forms) measures, make the performance data of same group of exemplar under the different measuring condition more comprehensive, have comparability, solve the problems referred to above that exist in the background technology.
Technical scheme of the present invention is:
The model of siliconized plate performance on a kind of measuring transformer product, formed by four hollow field coils that are connected in series, four hollow measuring coils that are connected in series, compensating coil, base plate, coil base, coil rack and a positioning compression device, coil rack is hollow-core construction, the outside arranges hollow measuring coil and hollow field coil, be co-located on the coil base, consist of a category like the air core coil structure of epstein frame formula, four groups of air core coil structures surround square at base plate, and foursquare centre arranges a compensating coil; Joint at two groups of air core coils is provided with positioning compression device, cooperates different surveying instrument equipment, finishes multiple magnetic property and measures.
Described positioning compression device comprises exemplar bottom bracket, exemplar top hold-down and briquetting, measured exemplar is placed between exemplar bottom bracket and the exemplar top hold-down, compress the location by the briquetting above the exemplar top hold-down, change the size that four bights apply snap-in force, investigate snap-in force to the impact of the core construction of siliconized plate composition.
A kind of method of using siliconized plate performance on the above-mentioned model measurement power transformer product, at air core coil structure filling siliconized plate, the silicon steel sheet magnetic measurement that cooperates different instrument and equipments and sample to finish various working; Comprise following steps:
Make the trapezoidal sample in 45o angle and strip exemplar, the mitre of the stepping overlap joint of the lap side seam of epstein frame and transformer and the mitre of docking in the simulation GB are carried out magnetic property to the exemplar of these core constructions and are measured; Use variable-frequency power sources, finish multifrequency magnetic property and measure; Carrying out the various temperature state magnetic of constant temperature can measure with temperature-controlled cabinet.
Exert pressure by positioning compression device up and down at the siliconized plate of filling, change the size that four bights apply snap-in force, to the snap-in force metering, investigate snap-in force to the impact of the core construction of siliconized plate composition.
Use two models that the air core coil structure length is different, adopt the exemplar of same width, but the length of magnetic path is different, finish the examination analysis of the seam domain of influence under the different performance.
The invention has the beneficial effects as follows: measuring method of the present invention, can finish most siliconized plate magnetic property researchs at a model, be convenient in the laboratory, finish concentrating, furtheing investigate transformer device structure and magnetism of material energy.
Description of drawings
Fig. 1 is the model schematic top plan view that the present invention relates to;
Fig. 2 is the model schematic side view that the present invention relates to;
Fig. 3 is the model schematic perspective view that the present invention relates to;
Fig. 4 is the Model Space wire-core coil structural representation that the present invention relates to;
Among Fig. 1: base plate 1, top cover 2, positioning compression device 3, exemplar 4, model shell 5, exemplar bottom bracket 6, exemplar top hold-down 7, briquetting 8, compensating coil 9, coil base 10, coil rack 11, hollow measuring coil 12, hollow field coil 13.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described by embodiment.
The model of siliconized plate performance on a kind of measuring transformer product, by four hollow field coils 13 that are connected in series, four hollow measuring coils 12 that are connected in series, a compensating coil 9, base plate 1, coil base 10, coil rack 11 and positioning compression device 3 form, coil rack is hollow-core construction, the outside arranges hollow measuring coil and hollow field coil, be co-located on the coil base, consist of a category like the air core coil structure of epstein frame formula, four groups of air core coil structures surround square at base plate, and foursquare centre arranges a compensating coil; Joint at two groups of air core coils is provided with positioning compression device, cooperates different surveying instrument equipment, finishes multiple magnetic property and measures.
Described positioning compression device comprises exemplar bottom bracket 6, exemplar top hold-down 7 and briquetting 8, and measured exemplar 4 is placed between exemplar bottom bracket and the exemplar top hold-down, compresses the location by the briquetting above the exemplar top hold-down 7.
A kind of method of using siliconized plate performance on the above-mentioned model measurement power transformer product, at air core coil structure filling siliconized plate, the silicon steel sheet magnetic measurement that cooperates different instrument and equipments and sample to finish various working; Comprise following steps:
Make the trapezoidal sample in 45o angle and strip exemplar, the mitre of the stepping overlap joint of the lap side seam of epstein frame and transformer and the mitre of docking in the simulation GB are carried out magnetic property to the exemplar of these core constructions and are measured; Use variable-frequency power sources, finish multifrequency magnetic property and measure; Carrying out the various temperature state magnetic of constant temperature can measure with temperature-controlled cabinet.
In an embodiment, model is as the main body of experiment, to exemplar 4(siliconized plate) change according to measuring needs, measure the magnetic property of this exemplar.
According to the exemplar characteristic of transformer and the exemplar characteristic of canonical measure, compare and measure when having or not compensating coil 9, on the mitre of transformer, the impact of stepping bridging arrangement.
This model is positioned in the automatic constant-temperature control box, sets the temperature of test, finish the magnetic property of exemplar under the different temperatures and measure.
Positioning compression device is applied different moments of torsion, cause the pressure different to the exemplar seam crossing, measure the exemplar magnetic property under the different pressures.
Equally, use variable-frequency power sources, can measure the magnetic property of exemplar under the different frequency.
By various combination, can obtain the exemplar magnetic property under the various working, satisfy the Magnetic Measurement needs under the transformer usefulness siliconized plate different operating condition.
With two length of magnetic path differences, the model that the exemplar width is identical, on the basis that above-mentioned magnetic property is measured, finish the size of various Test Cycle across corner overlap joints, stepping overlap joint or butt-welded side seam influence degree.
Claims (5)
1. the model of siliconized plate performance on the measuring transformer product, it is characterized in that: by four hollow field coils (13) that are connected in series, four hollow measuring coils (12) that are connected in series, a compensating coil (9), base plate (1), coil base (10), coil rack (11) and positioning compression device (3) form, coil rack is hollow-core construction, the outside arranges hollow measuring coil and hollow field coil, be co-located on the coil base, consist of a category like the air core coil structure of epstein frame formula, four groups of air core coil structures surround square at base plate, and foursquare centre arranges a compensating coil; Joint at two groups of air core coils is provided with positioning compression device, cooperates different surveying instrument equipment, finishes multiple magnetic property and measures.
2. the model of siliconized plate performance on a kind of measuring transformer product according to claim 1, it is characterized in that: described positioning compression device comprises exemplar bottom bracket (6), exemplar top hold-down (7) and briquetting (8), measured exemplar (4) is placed between exemplar bottom bracket and the exemplar top hold-down, compress the location by the briquetting above the exemplar top hold-down (7), change the size that four bights apply snap-in force, investigate snap-in force to the impact of the core construction of siliconized plate composition.
3. a right to use requires the method for siliconized plate performance on the 1 model measurement power transformer product that limits, and it is characterized in that at air core coil structure filling siliconized plate the silicon steel sheet magnetic measurement that cooperates different instrument and equipments and sample to finish various working; Comprise following steps:
Make the trapezoidal sample in 45o angle and strip exemplar, the mitre of the stepping overlap joint of the lap side seam of epstein frame and transformer and the mitre of docking in the simulation GB are carried out magnetic property to the exemplar of these core constructions and are measured; Use variable-frequency power sources, finish multifrequency magnetic property and measure; Carrying out the various temperature state magnetic of constant temperature can measure with temperature-controlled cabinet.
4. the method for siliconized plate performance on a kind of measuring transformer product according to claim 3, it is characterized in that: exert pressure by positioning compression device up and down at the siliconized plate of filling, change the size that four bights apply snap-in force, to the snap-in force metering, investigate snap-in force to the impact of the core construction of siliconized plate composition.
5. the method for siliconized plate performance on a kind of measuring transformer product according to claim 3, it is characterized in that: use two models that the air core coil structure length is different, adopt the exemplar of same width, but the length of magnetic path is different, finishes the examination analysis of the seam domain of influence under the different performance.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543338A (en) * | 2013-11-13 | 2014-01-29 | 保定天威集团有限公司 | Method and special device for measuring loss of iron cores, in different lap joint modes, of transformer |
| CN103630856A (en) * | 2013-12-17 | 2014-03-12 | 保定天威集团有限公司 | Method and device for simulating magnetic performance of iron core material of served transformer |
| CN103713267A (en) * | 2013-12-30 | 2014-04-09 | 中国计量科学研究院 | Continuous iron-loss measurement wire frame for electrical steel |
| CN103558568B (en) * | 2013-11-15 | 2017-03-01 | 沈阳工业大学 | The magnetic characteristic measurement apparatus of electrical sheet and combinations thereof structure difference stress direction |
| CN109031169A (en) * | 2018-07-13 | 2018-12-18 | 江苏龙城精锻有限公司 | The adjustable pawl pole magnetic property non-destructive testing device of test temperature and method |
| CN110441720A (en) * | 2019-09-12 | 2019-11-12 | 河北工业大学 | It is a kind of fold direction apply stress improvement epstein frame |
| CN110531288A (en) * | 2019-09-26 | 2019-12-03 | 武汉钢铁有限公司 | A kind of epstein frame magnetic property detection device and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543338A (en) * | 2013-11-13 | 2014-01-29 | 保定天威集团有限公司 | Method and special device for measuring loss of iron cores, in different lap joint modes, of transformer |
| CN103543338B (en) * | 2013-11-13 | 2015-11-25 | 保定天威保变电气股份有限公司 | The method of a kind of measuring transformer different joint form loss unshakable in one's determination |
| CN103558568B (en) * | 2013-11-15 | 2017-03-01 | 沈阳工业大学 | The magnetic characteristic measurement apparatus of electrical sheet and combinations thereof structure difference stress direction |
| CN103630856A (en) * | 2013-12-17 | 2014-03-12 | 保定天威集团有限公司 | Method and device for simulating magnetic performance of iron core material of served transformer |
| CN103630856B (en) * | 2013-12-17 | 2016-03-02 | 保定天威保变电气股份有限公司 | A kind of method of transformer core material magnetic property after Simulated Service |
| CN103713267A (en) * | 2013-12-30 | 2014-04-09 | 中国计量科学研究院 | Continuous iron-loss measurement wire frame for electrical steel |
| CN103713267B (en) * | 2013-12-30 | 2016-01-06 | 中国计量科学研究院 | The continuous iron loss of a kind of electrical sheet measures wire frame |
| CN109031169A (en) * | 2018-07-13 | 2018-12-18 | 江苏龙城精锻有限公司 | The adjustable pawl pole magnetic property non-destructive testing device of test temperature and method |
| CN110441720A (en) * | 2019-09-12 | 2019-11-12 | 河北工业大学 | It is a kind of fold direction apply stress improvement epstein frame |
| CN110441720B (en) * | 2019-09-12 | 2024-05-24 | 河北工业大学 | Improved epstein square ring for applying stress in stacking direction |
| CN110531288A (en) * | 2019-09-26 | 2019-12-03 | 武汉钢铁有限公司 | A kind of epstein frame magnetic property detection device and method |
| CN110531288B (en) * | 2019-09-26 | 2021-05-25 | 武汉钢铁有限公司 | Epstein square ring magnetic property detection device and method |
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Application publication date: 20130424 |