CN208672786U - More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices - Google Patents
More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices Download PDFInfo
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- CN208672786U CN208672786U CN201821216981.3U CN201821216981U CN208672786U CN 208672786 U CN208672786 U CN 208672786U CN 201821216981 U CN201821216981 U CN 201821216981U CN 208672786 U CN208672786 U CN 208672786U
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- electrical sheet
- magnetic
- characteristic measuring
- physical factor
- measuring devices
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Abstract
The utility model relates to a kind of more physical factor coupling electrical sheet complexity magnetic characteristic measuring devices, which includes excitation magnetic yoke, heating module, prestressing force loading module, picking up signal module, magnetic screen and structural member.Tested electrical sheet is cross, is placed in excitation magnetic yoke.Excitation magnetic yoke, heating module, prestressing force loading module are fixed by structural member, heating module, and picking up signal module and magnetic screen are respectively positioned on the center of excitation magnetic yoke.
Description
Technical field
The utility model relates to a kind of electrical sheet magnetic characteristic detection devices, refer in particular to a kind of more physical factor coupling works
With electrical sheet complexity magnetic characteristic measuring device.
Background technique
Modern electrician equipment suffers from a variety of physical factor collective effects in the process of running, if cannot in design and
The performance evaluation stage considers influence of these physical factors to material property parameter, even if design and analysis method are advanced again,
It cannot get optimization design scheme and accurate results of performance analysis.Motor, transformer electrician equip iron core and electrical sheet are widely used
Piece, magnetic characteristic have both magnetic hysteresis, vortex and anisotropy, and depend on temperature, the physical factor of stress simultaneously.For explication de texte
How the performance parameter of these electricians equipment, obtain including electrical sheet these materials under more physical factor collective effects
Physical parameter be known as critical issue.The utility model just proposes a kind of it can be considered that electrician under more physical factor couplings
Steel disc complexity magnetic characteristic measuring device.
Existing " a kind of two-dimensional magnetic property of electrical steel sheet single sheet measurement system and its measurement method " only uses in measuring appliance
Single H coil pickoff picks up H signal, since H coil can not be bonded tested print, the H signal for being easy to cause pickup to arrive completely
Inaccuracy；The intrinsic yoke design of measuring appliance, since leakage field is than more serious, equally will affect B signal when measuring high zone of saturation
With the testing result of H signal;In addition, the device can not consider the load of electrical sheet temperature and stress.
Summary of the invention
Goal of the invention: in order to overcome the shortcomings of the prior art, the utility model provides one kind being capable of precise measurement electrical sheet
The method of piece complicated magnetic characteristic under the effect of more physical factors.
Technical solution:
More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices, applicable tested electrical sheet are cross
Shape, comprising:
Excitation magnetic yoke: being made of two secondary mutually orthogonal magnetic yokes, and every pair magnetic yoke is by two " C " sections yoke groups symmetrical above and below
At；Tested electrical sheet is placed in excitation magnetic yoke；
The part that described two " C " sections yokes are connected is cased with X-direction magnet exciting coil and Y-direction magnet exciting coil；
Excitation magnetic yoke center is provided with heating module, picking up signal module and magnetic screen module；
The excitation magnetic yoke is connected on pedestal by insulating carriage via support rod；
Strain-ga(u)ge transducer is fixed on tested electrical sheet upper surface；
Four groups of folders of across arrangement, to clamp four arms of tested electrical sheet；The folder is arranged in guide rail
On, guide rail is connect with screw rod；Described screw rod one end is provided with rolled round.
More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices, preferably: on the screw rod
It is provided with locking spanner.
More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices, preferably: the c-type magnetic yoke
It is truncated in the middle part of from two-arm, the iron yoke being truncated is fixed by cleat insulator.
More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices, preferably: in the rolled round
It is provided with dial.
More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices, preferably: the screw rod is
Precise ball screw and folder are arranged in supporting table.
More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices, preferably: the magnetic screen
Module includes the high magnetic conduction silicon steel sheet of superposition for being fitted in tested electrical sheet tested region upper and lower surface.
Advantage and effect:
The utility model excitation magnetic yoke is made of two mutually independent magnetic circuits, reduces the mutual shadow between two magnetic circuits
It rings, while realizing the focusing of flux density；The utility model introduces magnetic screen module, makes the magnetic flux density of print measured zone part
It is distributed more uniform.
Detailed description of the invention:
Fig. 1 is the utility model overall structure diagram
Fig. 2 is the utility model magnet exciting coil and part iron yoke schematic diagram
Fig. 3 is the sectional view of the utility model temperature loading module, magnetic screen module and signal detection module
Fig. 4 is that the utility model H coil pickoff places schematic diagram
Description of symbols:
1, c-type iron yoke 2, insulating carriage 3, L-type iron yoke 4, X-direction magnet exciting coil 5, Y-direction magnet exciting coil 6, insulating blanked clamper
Plate 7, precise ball screw 8, pedestal 9, support rod 10, guide rail 11, folder 12, upper layer insulation board 13, lower layer's insulation board 14, H line
Coil sensor 15, heating sheet 16, top magnetic shielding cover 17, lower section magnetic shielding cover 18, B coil pickoff 19, tested electrical sheet
20, patch type temperature sensor 21, locking spanner 22, rolled round 23, supporting table 24, strain-ga(u)ge transducer.
Specific embodiment:
Be described further with reference to the accompanying drawing to the utility model: the utility model is a kind of novel more physical factor couplings
Cooperation electrical sheet complexity magnetic characteristic measuring device, mainly by excitation magnetic yoke, heating module, prestressing force loading module, signal
Pickup model, magnetic screen module and structural member are constituted.
As shown in Figure 1, 2, excitation magnetic yoke is made of the orthogonal iron yoke of two groups of c-types symmetrical above and below, is easy to assembly by c-type iron
Yoke is truncated in the middle part of two-arm, and the iron yoke being truncated is fixed by cleat insulator 6.Two magnetic circuits are mutually indepedent, reduce two magnetic
Road influences each other.Straight angle type is processed into 3 end of L shape iron yoke, to realize the focusing of tested region magnetic flux density.X-direction is encouraged
Magnetic coil 4 is wound in two iron yokes up and down with Y-direction magnet exciting coil 5 and docks place.
As shown in Figure 1, 2, 3, heating module can realize that temperature loads, by heating sheet 15, patch type temperature sensor 20, position
Upper layer insulation board 12 above tested region, lower layer's insulation board 13 below tested region are constituted.Patch type temperature passes
Sensor 20 and strain-ga(u)ge transducer 24 are fixed on tested 19 upper surface of electrical sheet.12 4 jiaos of upper layer insulation board are provided with through-hole,
For drawing leading for B coil pickoff 18, H coil pickoff 14, patch type temperature sensor 20 and strain-ga(u)ge transducer 24
Line.13 4 jiaos of lower layer's insulation board are provided with through-hole, for drawing the conducting wire of heating sheet 15.Lower layer's insulation board 13 passes through 9 quilt of support rod
It is fixed on pedestal 8.Tested 19 tested region upper and lower of electrical sheet is equipped with insulation board to reach heat insulation effect.
As shown in Figure 1, 2, prestressing force loading module is by 24 structure of guide rail 10, precise ball screw 7 and strain-ga(u)ge transducer
At, the precise ball screw 7 can apply the stress on X and Y-direction to tested electrical sheet 19 respectively by hand mode,
Dial in rolled round 22 can show the size of loading stress.Locking spanner 21 in the precise ball screw 7 has locking
Tested 19 end of electrical sheet is fixed on folder 11 by function, is applied using precise ball screw 7 to tested electrical sheet 19
Stress.Precise ball screw 7 and folder 11 are fixed on pedestal 8 by supporting table 23.The strain-ga(u)ge transducer 24 is consolidated
Due to tested 19 upper surface of electrical sheet, for detecting the stress value in actual measurement region.
As shown in Figure 3,4, picking up signal module is made of two H coil pickoffs 14 and one group of B coil pickoff 18.Institute
The upper layer insulation board 12 that H coil pickoff 14 is placed between top magnetic shielding cover 16 and tested electrical sheet 19 is stated, it is described
It is milled with square groove below upper layer insulation board 12, is B coil pickoff 18, patch type temperature sensor 20 and strain-ga(u)ge transducer 24
Reserved space.It ensure that H coil pickoff 14 is parallel with tested electrical sheet 19 as much as possible.
As shown in Figure 1, 2, 3, circular hole there are four beating to 19 central symmetry of tested electrical sheet.The B coil is passed
Sensor 18 is wound on tested 19 central circular hole of electrical sheet.Two pieces of magnetic shielding covers are formed by silicon steel plate stacking, are bonded quilt respectively
19 tested region upper and lower surface of electrical sheet is surveyed, can prevent external magnetic field from interfering, while being lowered into structural member leakage field.Top magnetic
16 4 jiaos of shielding case have through-hole, for drawing B coil pickoff 18, H coil pickoff 14, patch type temperature sensor
20 and strain-ga(u)ge transducer 24 conducting wire.17 4 jiaos of lower section magnetic shielding cover have through-hole, for drawing heating sheet 15
Conducting wire.Supporting module includes pedestal 8, the fixed frame being connected on pedestal 8 by support rod 9, is located at 13 lower section of lower layer's insulation board
Insulating carriage 2.Pedestal 8 is equipped with the through-hole for fixing iron yoke and insulating carriage 2, and insulating carriage 2 passes through support
Bar 9 is connected with pedestal 8, and insulating carriage 2 passes through the fixed c-type iron yoke 1 of upper and lower method of clamping.
The step of when measuring more physical factor coupling electrical sheet complexity magnetic characteristics using utility model device, is such as
Under:
1. retracting cleat insulator 6, L-type iron yoke 3, X-direction magnet exciting coil 4 and Y-direction magnet exciting coil 5 are removed.
2. being put into tested electrical sheet 19, its four free ends are fixed on folder 11.
3. the top magnetic shielding cover 16 being fixed together, upper layer insulation board 12 and H coil pickoff 14 are placed on electricity
Above work steel disc tested region.
4. X-direction magnet exciting coil 4 and Y-direction magnet exciting coil 5 are inserted into from the tail end of tested electrical sheet 19, it is put into L-type
Iron yoke 3, when installation, should ensure that effect powerless between tested electrical sheet 19 and eight L-type iron yokes 3.
5. clamping cleat insulator 6.
6. applying specified stress to tested electrical sheet 19 by rolled round 22, the locking for rotating on precise ball screw 7 is pulled
Hand 21 locks precise ball screw 7；The load of assigned temperature is realized by corresponding temperature control system.
7. the vector magnetic feature measurement program write using LabVIEW provides the sine electricity of two direction magnet exciting coil of X and Y
Signal is pressed, the signal of generation is exported through data collecting card, since the voltage signal generated at this time contains higher hamonic wave, need to be utilized low
Frequency filter is filtered it.Filtered signal is amplified by power amplifier, and amplified signal also needs to utilize isolation
Transformer isolates out flip-flop therein, and finally obtained X-direction excitation signal is loaded into X-direction excitation wire in Fig. 1
On circle 4；Finally obtained Y-direction excitation signal is loaded into Fig. 1 on Y-direction magnet exciting coil 5.The magnetic field of both direction is in electricity
Work steel disc tested region synthesizes rotating excitation field.
8. being sent back to after isolated amplifier amplifies by the collected signal of B coil pickoff 18 and H coil pickoff 14
Data collecting card.
9. the error between guarantee magnetic flux density signal and standard signal is not by the excitation signal for adjusting X-direction and Y-direction
More than 1%.
10. changing two-way excitation signal, temperature and stress, eight, nine, ten steps are repeated, and then obtain assigned temperature, stress
And magnetic flux density track and magnetic field strength track under magnetic flux density, and further obtain iron loss.
The utility model is a kind of novel more physical factor coupling electrical sheet complexity magnetic characteristic measuring devices, can
More accurate obtains complicated magnetic characteristic of the electrical sheet at temperature and stress coupling effect, so as to set for electrician's equipment
Meter personnel provide accurate material data.
Claims (6)
1. the coupling electrical sheet complexity magnetic characteristic measuring device of physical factor more than, applicable tested electrical sheet are cross
Shape, it is characterised in that:
Include:
Excitation magnetic yoke: being made of two secondary mutually orthogonal magnetic yokes, and every pair magnetic yoke is made of two " C " sections yokes (1) symmetrical above and below；
Tested electrical sheet is placed in excitation magnetic yoke；
The part that described two " C " sections yokes are connected is cased with X-direction magnet exciting coil (4) and Y-direction magnet exciting coil (5)；
Excitation magnetic yoke center is provided with heating module, picking up signal module and magnetic screen module；
The excitation magnetic yoke is connected on pedestal (8) by insulating carriage (2) via support rod (9)；
Strain-ga(u)ge transducer (24) is fixed on tested electrical sheet (19) upper surface；
Four groups of folders (11) of across arrangement, to clamp four arms of tested electrical sheet；Folder (11) setting exists
On guide rail (10), guide rail (10) is connect with screw rod (7)；Described screw rod (7) one end is provided with rolled round (22).
2. more physical factor coupling electrical sheet complexity magnetic characteristic measuring devices according to claim 1, feature
It is: is provided with locking spanner (21) on the screw rod (7).
3. more physical factor coupling electrical sheet complexity magnetic characteristic measuring devices according to claim 1, feature
Be: " C " the sections yoke (1) is truncated in the middle part of two-arm, and the iron yoke being truncated is fixed by cleat insulator (6).
4. more physical factor coupling electrical sheet complexity magnetic characteristic measuring devices according to claim 1, feature
It is: is provided with dial on the rolled round (22).
5. more physical factor coupling electrical sheet complexity magnetic characteristic measuring devices according to claim 1, feature
Be: the screw rod (7) is that precise ball screw and folder (11) are arranged on supporting table (23).
6. more physical factor coupling electrical sheet complexity magnetic characteristic measuring devices according to claim 1, feature
Be: the magnetic screen module includes the high magnetic conduction silicon steel of superposition for being fitted in tested electrical sheet (19) tested region upper and lower surface
Piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821216981.3U CN208672786U (en) | 2018-07-30 | 2018-07-30 | More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821216981.3U CN208672786U (en) | 2018-07-30 | 2018-07-30 | More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208672786U true CN208672786U (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821216981.3U Expired - Fee Related CN208672786U (en) | 2018-07-30 | 2018-07-30 | More physical factor coupling electrical sheet complexity magnetic characteristic measuring devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986874A (en) * | 2021-02-07 | 2021-06-18 | 河北工业大学 | Monolithic magnetic property measuring device based on space orthogonal triaxial stress loading condition |
-
2018
- 2018-07-30 CN CN201821216981.3U patent/CN208672786U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986874A (en) * | 2021-02-07 | 2021-06-18 | 河北工业大学 | Monolithic magnetic property measuring device based on space orthogonal triaxial stress loading condition |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190329 Termination date: 20200730 |