CN101699310B - Device for measuring flux density value of practical air gap field of magnetic steel in electric appliance - Google Patents
Device for measuring flux density value of practical air gap field of magnetic steel in electric appliance Download PDFInfo
- Publication number
- CN101699310B CN101699310B CN2009100731025A CN200910073102A CN101699310B CN 101699310 B CN101699310 B CN 101699310B CN 2009100731025 A CN2009100731025 A CN 2009100731025A CN 200910073102 A CN200910073102 A CN 200910073102A CN 101699310 B CN101699310 B CN 101699310B
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- air gap
- flux density
- gap field
- density value
- 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.)
- Active
Links
Images
Landscapes
- Measuring Magnetic Variables (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The invention discloses a device for measuring flux density value of practical air gap field of magnetic steel in electric appliance, relating to the field of magnetic property measurement. The device is used for solving the problem that when the measured magnetic steel is measured under the condition of a magnetic open circuit, a measuring result can not truly and quantificationally reflect the flux density value of the measured magnetic steel in the air gap field. In the invention, the middle part of a member for constructing the air gap field is provided with a channel, the size of the channel adapts to the size of the measured magnetic steel, an air gap is remained between the upper side wall in the channel and the upper end surface of the measured magnetic steel, the size of the air gap is consistent with the size of the air gap of the measured magnetic steel in the electric appliance, a magnetic sensor is arranged in the air gap between the measured magnetic steel and a closed magnetic loop, and the magnetic induction intensity of the magnetic sensor is worked out by a magnetic induction intensity detector. The device is used for measuring the air gap flux density value of the measured magnetic steel under the condition of the closed magnetic loop when the electric appliance is produced, and moreover, the arrangement of the magnetic steel in an electric motor or an electric appliance is optimized according to test data, thereby improving the property of the electric motor or the electric appliance.
Description
Technical field
The present invention relates to the magnetic property field of measurement, be specifically related to a kind of device of magnet steel that be used for measuring at the electrical equipment flux density value of practical air gap field.
Background technology
Magnet steel (also claiming permanent magnet) is the critical piece of calutrons such as magneto; Its magnetic property is very big to the influence of motor overall performance; On the one hand; The magnetic of magnet steel directly influences exerting oneself of magneto and power, and manufacturer's magnet steel product also can be different because of batch different magnetic, thereby influences the overall performance of motor; On the other hand, even same batch products, the magnetic property of magnet steel also disperses, and dispersiveness is very big sometimes, has a strong impact on the consistance of motor performance, makes the teeth groove location torque of motor become big simultaneously, causes noise and vibration, and motor can not normally use when serious.At present, solution to the problems described above is: one, propose strict quality requirements to the magnet steel manufacturer; Two, carry out the test of motor performance, the control quality of finished product; Three, in the production run magnet steel being carried out magnetic property detects.Wherein, first method can improve the consistance of magnet steel magnetic property to a certain extent, ensures the quality of products, but guarantees that consistance is very difficult completely; Second method is carried out after motor is made completion, goes wrong can't solve.Therefore, in the motor production run, at first carrying out the detection of magnet steel magnetic property, and according to testing result magnet steel is screened, arranges, is that consistance, the inhibition teeth groove location torque that improves motor performance becomes big effective measures.And the motor manufacturer is that the method that adopts the magnet steel surface magnetic flux density to measure is tested mostly at present; This method can reflect the dispersiveness of magnet steel magnetic flux density to a certain extent; But because test is under the condition of magnetic open circuit, to carry out; The measured value of magnetic flux density is not motor or electrical equipment flux density value of practical air gap field, thus measurement result can not be truly, can not reflect the dispersiveness of magnet steel magnetic flux density quantitatively.
Summary of the invention
The objective of the invention is under the magnetic open-circuit condition, to measure in order to solve tested magnet steel; Its measurement result can not reflect the problem of the flux density value (flux density value can weigh the dispersiveness of magnet steel magnetic flux density) of tested magnet steel in air-gap field truly, and then a kind of device of magnet steel at the electrical equipment flux density value of practical air gap field that be used for measuring is provided.
Technical scheme of the present invention is: of the present inventionly be used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; It comprises Magnetic Sensor; It also comprises the member that is used to construct air-gap field; The said member that is used to construct air-gap field is processed by ferromagnetic material, and the middle part that is used to construct the member of air-gap field has the passage that adapts with tested magnet steel size, and the Magnetic Sensor that has signal wire interface is fixed in the middle part of upper side wall in the passage; Leave air gap between upper side wall and the tested magnet steel upper surface in the passage, the size of said air gap and the size of gaps of tested magnet steel in electrical equipment are consistent.
The present invention has following beneficial effect: one, simple in structure, and convenient test; Two, realize the closed magnetic circuit test of magnet steel, measuring accuracy is high, and the actual air gap flux density value in flux density value that records and the electrical equipment is consistent; Three, can test the change in magnetic flux density of magnet steel different parts, reflect the homogeneity of same magnet steel magnetic flux density; Four, practical, the cross sectional shape of change guide rail promptly can be used to measure difform magnet steel flux density value.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is that the A of Fig. 1 is to view; Fig. 3 is the structural representation of Magnetic Sensor retainer; Fig. 4 is user mode figure of the present invention.
Embodiment
Embodiment one: what combine that Fig. 1, Fig. 2 and Fig. 4 explain this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; It comprises Magnetic Sensor 4; It also comprises the member that is used to construct air-gap field; The said member that is used to construct air-gap field is processed by ferromagnetic material; The middle part that is used to construct the member of air-gap field has the passage 1-1 that adapts with tested magnet steel size; The Magnetic Sensor 4 that has signal wire interface is fixed in the middle part of upper side wall in the passage 1-1, leaves air gap H between upper side wall and the tested magnet steel upper surface in the passage 1-1, and the size of said air gap H and the tested magnet steel actual size of gaps in electrical equipment is consistent.The said member formation closed magnetic loop that is used to construct air-gap field; The length of tested magnet steel is less than the length of passage 1-1; Thereby tested magnet steel is in the formed closed magnetic loop of member; Tested magnet steel is identical with the actual air gap in the electrical equipment with air gap H between the closed magnetic loop, through measuring the air gap flux density value of tested magnet steel under the closed magnetic loop condition, can learn the actual air gap flux density value of motor and electrical equipment.
Embodiment two: what combine that Fig. 1 and Fig. 2 explain this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; It also comprises magnetic induction density detector 8, and said magnetic induction density detector 8 is connected with signal wire interface on the Magnetic Sensor 4 through signal wire.Magnetic induction density detector 8 can quantitative calculation go out the air gap flux density value of tested magnet steel under the closed magnetic loop condition, and promptly the actual air gap flux density of electrical equipment is big or small, and other composition of this embodiment is identical with embodiment one with annexation.
Embodiment three: what combine that Fig. 2 explains this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; The size of said air gap H is 0.4mm～3mm, and other composition of this embodiment is identical with embodiment one or two with annexation.
Embodiment four: what combine that Fig. 1 and Fig. 2 explain this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; The said member that is used to construct air-gap field is made up of lid 1 and base 2; Said lid 1 is arranged on the base 2, and other composition of this embodiment is identical with embodiment one, two or three with annexation.
Embodiment five: what combine that Fig. 2 and Fig. 4 explain this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; Said passage 1-1 is arranged on the lower surface of lid 1, and other composition of this embodiment is identical with embodiment one, two or three with annexation.
Embodiment six: what combine that Fig. 2 and Fig. 4 explain this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; Said passage 1-1 is arranged on the upper surface of base 2, and other composition of this embodiment is identical with embodiment one, two or three with annexation.
Embodiment seven: what combine that Fig. 1, Fig. 2 and Fig. 4 explain this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; The external form of said lid 1 is down " U " shape; Its length direction of upper edge, upper surface of base 2 has slideway 2-1, and cavity and slideway 2-1 in the said lid 1 constitute said passage 1-1, and this passage 1-1 becomes the guide rail that tested magnet moves; Guide tested magnet to do rectilinear motion; Change the cross sectional shape of guide rail, to be applicable to difform magnet steel, other composition of this embodiment is identical with embodiment one, two or three with annexation.
Embodiment eight: what combine that Fig. 1, Fig. 2 and Fig. 4 explain this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; It also comprises tested magnet steel catch bar 6 and substrate 7; Said substrate 7 vertically is fixed on the upper surface of base 2 one sides; Tested magnet steel catch bar 6 passes substrate 7, and an end of tested magnet steel catch bar 6 is connected with the contact of tested magnet steel, and the other end of tested magnet steel catch bar 6 is taken turns or motor links to each other with hand.Said tested magnet steel catch bar 6 can be leading screw or feed rod; Electronic (rotary driving part is a motor) or manual (rotary driving part is hand the wheel) rotational lead screw also can electronic (the linear drives parts be linear motors) or manually promote feed rod, tested magnet steel are pushed in the air gap of closed magnetic loop; After measuring end; Through rotational lead screw or promotion feed rod, make tested magnet steel withdraw from closed magnetic loop, other composition of this embodiment is identical with embodiment seven with annexation.
Embodiment nine: what combine that Fig. 1, Fig. 2 and Fig. 3 explain this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; It also comprises Magnetic Sensor retainer 3; Magnetic Sensor 4 is installed in the groove of Magnetic Sensor retainer 3; Said Magnetic Sensor retainer 3 is fixed in the middle part of passage 1-1 upper side wall; Sensor retainer 3 is made of aluminum or copper, i.e. non-magnet material, and other composition of this embodiment is arbitrary identical with embodiment one to eight with annexation.
Embodiment ten: what combine that Fig. 4 explains this embodiment is used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; The said member that is used to construct air-gap field is processed by iron or martensite type stainless steel; Be permeability magnetic material, other composition of this embodiment is identical with embodiment one with annexation.
Principle of work of the present invention is: the member that is used to construct air-gap field among the present invention is processed by ferromagnetic material; The middle part that is used to construct the member of air-gap field has the passage 1-1 that adapts with tested magnet steel size; Magnetic Sensor 4 is fixed in the middle part of passage 1-1 upper side wall, and Magnetic Sensor 4 is connected with magnetic induction density detector 8 through signal wire.Tested magnet steel is placed among the passage 1-1; Through the rotation or the promotion of tested magnet steel catch bar 6, tested magnet steel is placed in the formed closed magnetic loop of passage 1-1, and make tested magnet steel corresponding with Magnetic Sensor 4 positions; Make the magnetic line of force direction of effective workplace of Magnetic Sensor 4 perpendicular to tested magnet steel; The magnetic field of tested magnet steel is under the effect in closed magnetic loop magnetic field, and the tested magnet steel magnetic line of force direction in the air gap is vertical with tested magnet steel upper surface, at this moment; Magnetic flux density in the air gap is identical with the magnetic flux density of tested magnet steel inside, and promptly the flux density value in the air gap is consistent with the flux density value in the tested magnet steel.When passing to electric current for Magnetic Sensor 4; Will in Magnetic Sensor 4, produce Hall voltage; The size of this electromotive force is directly proportional with induction level; Magnetic Sensor 4 is sent into voltage signal in the magnetic induction density detector 8 through signal wire, and the voltage signal of 8 pairs of inputs of magnetic induction density detector is handled, the logical operation of the line correlation of going forward side by side; Thereby calculate the size of the magnetic field magnetic induction density of Magnetic Sensor 4 present positions, and demonstrate the air gap flux density value of tested magnet steel under closed magnetic loop through display element.After the reading of data, continue to move tested magnet steel catch bar 6, tested magnet steel is released closed magnetic loop.
This device can be measured the air gap flux density value of tested magnet steel under the closed magnetic loop condition; It is the actual air gap flux density size of electrical equipment; Screen or be optimized permutations and combinations through data analysis according to theoretical analysis; To improve the overall performance of motor and electrical equipment, particularly suppress the location torque of motor, can also test the dispersiveness of same tested magnet steel along the moving direction magnetic flux density; Prior purposes is the dispersiveness of the different magnet steel magnetic flux densities of test, and then optimizes the arrangement of magnet steel in motor or electrical equipment according to test data, to improve the performance of motor or electrical equipment.For example for multipolar dynamo, can be through magnet steel optimize the arrangement of the inhibition location torque.Magnetic induction density detector 8 used in the present invention can adopt the HT100 series digit teslameter of Shanghai smooth and prosperous magnetoelectricity Science and Technology Ltd. production or the SG-42 type numeral teslameter of Beijing Huo Sheng semiconductor devices company limited production etc.
Claims (7)
1. be used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; Comprise Magnetic Sensor (4), magnetic induction density detector (8); Said magnetic induction density detector (8) is connected with signal wire interface on the Magnetic Sensor (4) through signal wire, and it is characterized in that: it also comprises the member that is used to construct air-gap field, and the said member that is used to construct air-gap field is processed by ferromagnetic material; The said member that is used to construct air-gap field is made up of lid (1) and base (2); Said lid (1) is arranged on the base (2), and the external form of said lid (1) is down " U " shape, and its length direction of upper edge, upper surface of base (2) has slideway (2-1); Cavity in the said lid (1) and slideway (2-1) constitute passage (1-1); Passage (1-1) is positioned at the middle part of the member of constructing air-gap field, adapts with tested magnet steel size, and the Magnetic Sensor (4) that has signal wire interface is fixed in the middle part of the interior upper side wall of passage (1-1); Leave air gap (H) between interior upper side wall of passage (1-1) and the tested magnet steel upper surface, the size and the size of gaps of tested magnet steel in electrical equipment of said air gap (H) are consistent.
2. according to claim 1ly be used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field, it is characterized in that: the size of said air gap (H) is 0.4mm～3mm.
3. according to claim 1ly be used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field, it is characterized in that: said passage (1-1) is arranged on the lower surface of lid (1).
4. according to claim 1ly be used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field, it is characterized in that: said passage (1-1) is arranged on the upper surface of base (2).
5. according to claim 1ly be used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field; It is characterized in that: it also comprises tested magnet steel catch bar (6) and substrate (7); Said substrate (7) vertically is fixed on the end face of a side of base (2); Tested magnet steel catch bar (6) passes substrate (7), and an end of tested magnet steel catch bar (6) is connected with tested magnet steel contact.
6. according to the arbitrary described device of magnet steel that be used for measuring of claim 1 to 5 at the electrical equipment flux density value of practical air gap field; It is characterized in that: it also comprises Magnetic Sensor retainer (3); Magnetic Sensor (4) is installed in the groove of Magnetic Sensor retainer (3); Said Magnetic Sensor retainer (3) is fixed in the middle part of passage (1-1) upper side wall, and Magnetic Sensor retainer (3) is made of aluminum or copper.
7. according to claim 1ly be used for measuring the device of magnet steel at the electrical equipment flux density value of practical air gap field, it is characterized in that: the said member that is used to construct air-gap field is processed by iron or martensite type stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100731025A CN101699310B (en) | 2009-10-28 | 2009-10-28 | Device for measuring flux density value of practical air gap field of magnetic steel in electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100731025A CN101699310B (en) | 2009-10-28 | 2009-10-28 | Device for measuring flux density value of practical air gap field of magnetic steel in electric appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101699310A CN101699310A (en) | 2010-04-28 |
| CN101699310B true CN101699310B (en) | 2012-06-27 |
Family
ID=42147773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100731025A Active CN101699310B (en) | 2009-10-28 | 2009-10-28 | Device for measuring flux density value of practical air gap field of magnetic steel in electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101699310B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253352A (en) * | 2011-04-22 | 2011-11-23 | 襄樊五二五泵业有限公司 | Magnetic leakage factor detecting method and device for magnetic coupling |
| CN102435964A (en) * | 2011-10-19 | 2012-05-02 | 安泰科技股份有限公司 | Device and method for detecting surface magnetic field intensity of permanent magnet |
| CN104777439B (en) * | 2015-04-16 | 2019-11-05 | 常州市多维电器有限公司 | A kind of linear motor magnetic flux test device and test method |
| CN110297194B (en) * | 2019-07-24 | 2022-02-18 | 江西联创光电科技股份有限公司 | Mounting method and device of sensor supporting three-dimensional air gap magnetic field measurement |
| CN112051527B (en) * | 2020-08-11 | 2021-07-02 | 大连理工大学 | Clamping-detecting integrated device and matching method for micro magnetic steel |
| CN112763950A (en) * | 2020-12-22 | 2021-05-07 | 扬州京柏自动化科技有限公司 | Magnetic circuit testing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2198614Y (en) * | 1994-03-08 | 1995-05-24 | 李大顺 | Detector for magnetic flux density of silicon steel sheet |
| CN1519536A (en) * | 2003-01-14 | 2004-08-11 | ��ʽ�����װ | Angular position pick up for measuring high linear flux density |
-
2009
- 2009-10-28 CN CN2009100731025A patent/CN101699310B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2198614Y (en) * | 1994-03-08 | 1995-05-24 | 李大顺 | Detector for magnetic flux density of silicon steel sheet |
| CN1519536A (en) * | 2003-01-14 | 2004-08-11 | ��ʽ�����װ | Angular position pick up for measuring high linear flux density |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2009-213346A 2009.09.17 |
| 何伟军，等.大功率异步起动永磁同步电动机空载气隙磁密分析.《机电工程》.2008,第25卷(第7期),全文. * |
| 陈阳生,等.永磁电机气隙磁密的分析计算.《中国电机工程学报》.1994,第14卷(第5期),全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101699310A (en) | 2010-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101699310B (en) | Device for measuring flux density value of practical air gap field of magnetic steel in electric appliance | |
| CN104348332B (en) | Linear electric motors | |
| CN204855765U (en) | Smallclothes magnet surface field measures frock | |
| JPH1151693A (en) | Linear encoder | |
| CN110133326B (en) | Multichannel single-chip differential wheel speed sensor testing tool, system and method | |
| CN104964776B (en) | The measuring apparatus and method of a kind of motor cogging torque and friction torque | |
| CN103076576B (en) | Magnetic field intensity measurement mechanism | |
| CN201207078Y (en) | Permanent magnet synchronous motor test system | |
| CN211122663U (en) | Magnetization element for nondestructive testing sensor and sensor | |
| Olson et al. | Effective use of miniature multipoint field-based current sensors without magnetic cores | |
| KR100996265B1 (en) | Magnetic field profile measuring apparatus for electromagnet of the closed type cyclotron | |
| CN102508176A (en) | Detection method of uniformity of magnetic field of small permanent magnet | |
| CN103822576B (en) | Method using linear Hall sensor group to detect permanent magnet plane motor rotor coil phase | |
| CN117110967B (en) | Device and method for testing sensitivity of Hall element | |
| CN2718596Y (en) | Apparatus for testing long stator linear electric motor silicon steel laminated iron core magnetic performance | |
| JP5165614B2 (en) | Simulated measurement method and apparatus for eddy current loss of ground coil conductor in superconducting magnetic levitation railway | |
| CN104133184A (en) | Non-destructive test method and device for average magnetic field intensity of permanent magnet | |
| CN109541514B (en) | Calibration control device and calibration device for small coil turn area for magnetic moment measurement | |
| CN203287509U (en) | Novel sensor for magnetic field distribution scanning | |
| CN203037836U (en) | Magnetic field strength measurement device | |
| CN211122662U (en) | Support for magnetic resistance element of nondestructive testing sensor and sensor | |
| JP2010142033A (en) | Linear motor | |
| CN209697506U (en) | A kind of roughness measurement machine | |
| US20160313415A1 (en) | Measuring head, measuring system and method for determining a quality of a magnetic block for an energy converter | |
| CN202502661U (en) | Circular current axis magnetic induction intensity experiment instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |