CN202502661U - Circular current axis magnetic induction intensity experiment instrument - Google Patents
Circular current axis magnetic induction intensity experiment instrument Download PDFInfo
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- CN202502661U CN202502661U CN 201220134882 CN201220134882U CN202502661U CN 202502661 U CN202502661 U CN 202502661U CN 201220134882 CN201220134882 CN 201220134882 CN 201220134882 U CN201220134882 U CN 201220134882U CN 202502661 U CN202502661 U CN 202502661U
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- solenoid
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- magnetic induction
- long
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Abstract
Disclosed is a circular current axis magnetic induction intensity, which relates to a device for measuring the axial magnetic induction intensity of a solenoid and provides a solution for the problem that magnetic induction intensity value can not be measured quantitatively in existing measurement of the axial magnetic induction intensity of the solenoid. A short solenoid is arranged in center holes of two Helmholtz coils, a long solenoid is arranged in a center hole of the short solenoid, a horizontal support plate on a measuring support is arranged in a center hole of the long solenoid, a sensor is arranged on the horizontal support plate, a closed wire passes through the center hole of the long solenoid and is wound on four pulleys, two ends of the short solenoid are connected with two short solenoid contacts through wires respectively, two ends of the long solenoid are connected with two long solenoid contacts through wires respectively, two ends of one Helmholtz coil are connected with first Helmholtz coil contacts through wires respectively, and two ends of the other Helmholtz coil are connected with second Helmholtz coil contacts through wires respectively. The circular current axis magnetic induction intensity experiment instrument of the utility model is used for measuring the magnetic induction intensity of the solenoid axis.
Description
Technical field
The utility model relates to a kind of circular electric current axis magnetic flux density measurement device.
Background technology
The measurement of existing solenoid axis magnetic induction density B mainly contains two kinds of methods: (1), inductive method: connect ac signal which through a solenoid; Measure the magnetic induction magnitude of voltage V of detecting coil diverse location X on axis with A.C. voltmeter; Because magnetic induction magnitude of voltage V is directly proportional with magnetic induction density B; So; Make the distribution curve that the X-V image can draw magnetic induction density B on the solenoid axis, the shortcoming of this method is: measuring accuracy is low, can not quantitatively measure the concrete numerical value of magnetic induction density B; (2), Hall effect method: connect direct supply through a solenoid; Measure the magnitude of voltage V of Hall plate diverse location X on axis with D.C. voltmeter, because magnitude of voltage V is directly proportional with magnetic induction density B, so; Make the distribution curve that the X-V image can draw magnetic induction density B on the solenoid axis; The shortcoming of this method is: measuring accuracy is lower, can not quantitatively measure the concrete numerical value of magnetic induction density B, complex operation.
The utility model content
The purpose of the utility model is to adopt inductive method and Hall effect method for the measurement that solves existing circular electric current axis magnetic induction density B; Measuring accuracy is low; Can not quantitatively measure the concrete numerical value of magnetic induction density B; And the problem that experiment content is single, and a kind of combined circular electric current axis magnetic induction density experiment instrument is provided.
Circular electric current axis magnetic induction density experiment instrument, its composition comprise casing, short solenoid, rule, long solenoid, grow solenoid support bracket, measurement bracket, sensor, closed line, rotating shaft, dial, spring, pointer, loam cake, magnetic field measuring apparatus, two short solenoid support bracket, two Helmholtz coilss, two Helmholtz coils supports, three bearing pins, four pulleys and four bearings, loam cake be fastened on casing above; Casing divides top box and nowel, two parallel and coaxial settings of Helmholtz coils, and two Helmholtz coilss are installed in respectively on two Helmholtz coils supports; The lower surface of two Helmholtz coils supports is all affixed with the bottom surface of top box, and a short solenoid support bracket is housed in the center pit of each Helmholtz coils, and short solenoid is arranged in the center pit of two Helmholtz coilss; And short solenoid is installed on two short solenoid support bracket, in the short solenoidal center pit long solenoid support bracket is housed, and long solenoid is arranged in the short solenoidal center pit; And long solenoid is installed on the long solenoid support bracket; Horizontal support plate on the measurement bracket is arranged in the long solenoidal center pit, and the two ends of measurement bracket and the bottom surface of top box are affixed, and sensor is arranged on the horizontal support plate; Closed line is passed in the long solenoidal center pit; And closed line is on four pulleys, and two pulleys in four pulleys are positioned at the two ends of measurement bracket, and two pulleys in addition in four pulleys are positioned at the cabinet wall place; And four rectangular layouts of pulley; A pulley that is positioned at the inwall place is packed in the rotating shaft, and dial is packed in the rotating shaft, and the lower end of rotating shaft is contained on the bearing; Its excess-three pulley is set on the bearing pin corresponding with it; The lower end of each bearing pin is contained on the bearing, and the lower surface of bearing and the bottom surface of top box are affixed, and the front of top box and dial corresponding section are provided with the dial groove; The side that dial is positioned at chamber interior wall is exposed at outward outside the dial groove; Spring is positioned on the closed line at cabinet wall place, and the two ends of spring are connected with closed line, and pointer is positioned at by the spring; And the tail end of pointer is connected on the closed line; Rule is arranged on the positive of top box and is positioned at the front of pointer, and magnetic field measuring apparatus is contained in the nowel, and the sidewall of casing is provided with two short solenoid contacts, two long solenoid contacts, two first Helmholtz coils contacts and two second Helmholtz coils contacts; Short solenoidal two ends are connected with two short solenoid contacts through lead respectively; Long solenoidal two ends are connected with two long solenoid contacts through lead respectively, and the two ends of a Helmholtz coils are connected with two first Helmholtz coils contacts through lead respectively, and the two ends of another Helmholtz coils are connected with two second Helmholtz coils contacts through lead respectively.
The utility model has the advantages that: one, the utility model utilizes sensor as detector; Pass through magnetic field measuring apparatus; Magnetic field on not only can quantitative measurment short solenoid and the long solenoid axis, the magnetic field on can also quantitative measurment circular electric current axis and verify the superposition principle in magnetic field.The magnetic induction density B height that utilizes the degree of accuracy of the solenoid axis magnetic induction density B that the utility model measures to measure than inductive method and Hall effect method, and simple to operate.Two, the utility model simple in structure, in light weight, move conveniently, principle is directly perceived.
Description of drawings
Fig. 1 is the one-piece construction front view of the utility model, and Fig. 2 is the vertical view (removing loam cake 19) of Fig. 1, and Fig. 3 is the A-A cut-open view of Fig. 2, and Fig. 4 is the B-B cut-open view of Fig. 3.
Embodiment
Embodiment 1:
Circular electric current axis magnetic induction density experiment instrument is seen Fig. 1～Fig. 4, its composition comprise casing 1, short solenoid 3, rule 4, long solenoid 7, long solenoid support bracket 8, measurement bracket 9, sensor 10, closed line youngster, rotating shaft 13, dial 14, spring 17, pointer 18, loam cake 19, magnetic field measuring apparatus 20, two lack solenoid support bracket 2, two Helmholtz coilss 22, two Helmholtz coils supports 23, three bearing pins 16, four pulleys 12 and four bearings 15; Loam cake 19 be fastened on casing 1 above, 1 fen top box 1-1 of casing and nowel 1-2, two Helmholtz coils 22 parallel and coaxial settings; Two Helmholtz coilss 22 are installed in respectively on two Helmholtz coils supports 23, and the lower surface of two Helmholtz coils supports 23 is all affixed with the bottom surface of top box 1-1, and a short solenoid support bracket 2 is housed in the center pit of each Helmholtz coils 22; Short solenoid 3 is arranged in the center pit of two Helmholtz coilss 22, and short solenoid 3 is installed on two short solenoid support bracket 2, lacks in the center pit of solenoid 3 long solenoid support bracket 8 is housed; Long solenoid 7 is arranged in the center pit of short solenoid 3, long solenoid 7, short solenoid 3 and Helmholtz coils 22 coaxial settings, and long solenoid 7 is installed on the long solenoid support bracket 8; Horizontal support plate 9-1 on the measurement bracket 9 is arranged in the center pit of long solenoid 7, and the bottom surface of the two ends of measurement bracket 9 and top box 1-1 is affixed, and sensor 10 is arranged on the horizontal support plate 9-1; Closed line 11 is passed in the center pit of long solenoid 7; And closed line 11 is on four pulleys 12, and two pulleys 12 in four pulleys 12 are positioned at the two ends of measurement bracket 9, and two pulleys 12 in addition in four pulleys 12 are positioned at casing 1 inwall place; And four pulley 12 rectangular layouts; A pulley 12 that is positioned at the inwall place is packed in the rotating shaft 13, and dial 14 is packed in the rotating shaft 13, and the lower end of rotating shaft 13 is contained on the bearing 15; Its excess-three pulley 12 is set on the bearing pin corresponding with it 16; The lower end of each bearing pin 16 is contained on the bearing 15, and the bottom surface of the lower surface of bearing 15 and top box 1-1 is affixed, and the front of top box 1-1 and dial 14 corresponding sections are provided with dial groove 1-1-2; The side that dial 14 is positioned at top box 1-1 inwall is exposed at outward outside the dial groove 1-1-2; Spring 17 is positioned on the closed line 11 at casing 1 inwall place, and the two ends of spring 17 are connected with closed line 11, and it is other that pointer 18 is positioned at spring 17; And the tail end of pointer 18 is connected on the closed line 11; Rule 4 is arranged on the positive of top box 1-1 and is positioned at the front of pointer 18, and magnetic field measuring apparatus 20 is contained among the nowel 1-2, and the sidewall of casing 1 is provided with two short solenoid contacts 5, two long solenoid contacts 6, two the first Helmholtz coils contacts 24 and two second Helmholtz coils contacts 25; The two ends of short solenoid 3 are connected with two short solenoid contacts 5 through lead respectively; The two ends of long solenoid 7 are connected with two long solenoid contacts 6 through lead respectively, and the two ends of a Helmholtz coils 22 are connected with two first Helmholtz coils contacts 24 through lead respectively, and the two ends of another Helmholtz coils 22 are connected with two second Helmholtz coils contacts 25 through lead respectively.The length of short solenoid 3 is less than 300mm, and the external diameter of short solenoid 3 is 100mm～150mm.The length of short solenoid 3 and external diameter are in above-mentioned scope, and the magnetic induction density B that records can satisfy the theoretical value of short solenoid 3.The length of long solenoid 7 is greater than 450mm, and long solenoidal external diameter is less than 45mm.The length of long solenoid 7 and external diameter are in above-mentioned scope, and the magnetic induction density B that records can satisfy the theoretical value of long solenoid 7.The external diameter of Helmholtz coils 22 is greater than 200mm, and each Helmholtz coils 22 is 700 circles.The external diameter of Helmholtz coils 22 is in above-mentioned scope, and the magnetic induction density B that records can satisfy the theoretical value of Helmholtz coils 22.Long solenoid 7, short solenoid 3 and two Helmholtz coilss 22 are coaxial device.Sensor 10 adopts the integrated Hall sensor of 95A types, and (sensor area is that 4mm * 3mm) makes detector.Magnetic field measuring apparatus 20 is the commercially available prod.The material of loam cake 19 is an organic glass, and transparency is good.The effect of the spring 17 on the closed line 11 is not slide relatively between the pulley 12 that makes in closed line 11 and the rotating shaft 13.Pointer 18 is synchronized with the movement with sensor 10.Because long solenoid 7 is longer; The center pit internal diameter of long solenoid 7 is less; Directly the position of pickup 10 in long solenoid 7 is relatively more difficult; So take sensor 10 to be moved in long solenoid 7, read numerical value through the position of pointer 18 on rule 4 with pulley 12 traction sensors 10.
The measuring process of the utility model:
1, measures the axis magnetic induction density B of short solenoid 3: an end of two leads is connected with two short solenoid contacts 5 respectively; With the other end of two leads respectively with magnetic field measuring apparatus 20 on two current output terminals be connected; Sensor 10 is placed on the closed line 11 and is connected with the signal input part of magnetic field measuring apparatus 20 through lead; Open the power switch of magnetic field measuring apparatus 20, regulate the electric current output control handle on the magnetic field measuring apparatus 20, make output current reach 100mA; Stir dial 14; Move on horizontal support plate 9-1 through closed line 11 pulling sensors 10, pointer 18 whenever moves 1 centimetre on rule 4, and sensor 10 can be read corresponding axis magnetic induction density B value on magnetic field measuring apparatus 20; Numerical value and the axis magnetic induction density B value corresponding with it of the diverse location of record sensor 10 promptly obtain the axis magnetic induction density B value of diverse location experimentally.
2, measure the axis magnetic induction density B of long solenoid 7: an end of two leads is connected with two long solenoid contacts 6 respectively; With the other end of two leads respectively with magnetic field measuring apparatus 20 on two current output terminals be connected; Sensor 10 is placed on the closed line 11 and is connected with the signal input part of magnetic field measuring apparatus 20 through lead; Open the power switch of magnetic field measuring apparatus 20, regulate the electric current output control handle on the magnetic field measuring apparatus 20, make output current reach 100mA; Stir dial 14; Move on horizontal support plate 9-1 through closed line 11 pulling sensors 10, pointer 18 whenever moves 1 centimetre on rule 4, and sensor 10 can be read corresponding axis magnetic induction density B value on magnetic field measuring apparatus 20; Numerical value and the axis magnetic induction density B value corresponding with it of the diverse location of record sensor 10 promptly obtain the axis magnetic induction density B value of diverse location experimentally.
3, measure the axis magnetic induction density B of Helmholtz coils 22:
(1), measures the axis magnetic induction density B of circular electric current; With an end of two leads be connected with two first Helmholtz coils contacts 24 respectively, the other end respectively with magnetic field measuring apparatus 20 on two current output terminals be connected; Open the power switch of magnetic field measuring apparatus 20, regulate the electric current output control handle on the magnetic field measuring apparatus 20, make output current reach 100mA; Stir dial 14; Move on horizontal support plate 9-1 through closed line 11 pulling sensors 10, pointer 18 whenever moves 1 centimetre on rule 4, and sensor 10 can be read corresponding axis magnetic induction density B value on magnetic field measuring apparatus 20; Numerical value and the axis magnetic induction density B value corresponding with it of the diverse location of record sensor 10 promptly obtain the axis magnetic induction density B value of diverse location experimentally.
(2), the superposition principle in checking magnetic field; The two ends of a lead are connected (i.e. two Helmholtz coils 22 series connection) respectively with one second Helmholtz coils contact 25 with one first Helmholtz coils contact 24; One end of other two leads is connected with another second Helmholtz coils contact 25 with another first Helmholtz coils contact 24 of remainder respectively; With the other end of these two leads respectively with magnetic field measuring apparatus 20 on two current output terminals be connected; Open the power switch of magnetic field measuring apparatus 20, regulate the electric current output control handle on the magnetic field measuring apparatus 20, make output current reach 100mA; Stir dial 14; Move on horizontal support plate 9-1 through closed line 11 pulling sensors 10, pointer 18 whenever moves 1 centimetre on rule 4, and sensor 10 can be read corresponding axis magnetic induction density B value on magnetic field measuring apparatus 20; Numerical value and the axis magnetic induction density B value corresponding with it of the diverse location of record sensor 10 promptly obtain the axis magnetic induction density B value of diverse location experimentally.
Claims (5)
1. circular electric current axis magnetic induction density experiment instrument, its composition comprise casing (1), short solenoid (3), rule (4), long solenoid (7), grow solenoid support bracket (8), measurement bracket (9), sensor (10), closed line (11), rotating shaft (13), dial (14), spring (17), pointer (18), loam cake (19), magnetic field measuring apparatus (20), two short solenoid support bracket (2), three bearing pins (16), four pulleys (12) and four bearings (15), loam cake (19) be fastened on casing (1) above; Casing (1) divides top box (1-1) and nowel (1-2), and it is characterized in that: said measuring instrument also comprises two Helmholtz coilss (22) and two Helmholtz coils supports (23), the parallel and coaxial setting of two Helmholtz coilss (22); Two Helmholtz coilss (22) are installed in respectively on two Helmholtz coils supports (23), and the lower surface of two Helmholtz coils supports (23) is all affixed with the bottom surface of top box (1-1), and a short solenoid support bracket (2) is housed in the center pit of each Helmholtz coils (22); Short solenoid (3) is arranged in the center pit of two Helmholtz coilss (22), and short solenoid (3) is installed on two short solenoid support bracket (2), lacks in the center pit of solenoid (3) long solenoid support bracket (8) is housed; Long solenoid (7) is arranged in the center pit of short solenoid (3), and long solenoid (7) is installed on the long solenoid support bracket (8), and the horizontal support plate (9-1) on the measurement bracket (9) is arranged in the center pit of long solenoid (7); The bottom surface of the two ends of measurement bracket (9) and top box (1-1) is affixed; Sensor (10) is arranged on the horizontal support plate (9-1), and closed line (11) is passed in the center pit of long solenoid (7), and closed line (11) is on four pulleys (12); Two pulleys (12) in four pulleys (12) are positioned at the two ends of measurement bracket (9); Two pulleys (12) in addition in four pulleys (12) are positioned at casing (1) inwall place, and the rectangular layout of four pulleys (12), and a pulley (12) that is positioned at the inwall place is packed in the rotating shaft (13); Dial (14) is packed in the rotating shaft (13); The lower end of rotating shaft (13) is contained on the bearing (15), and its excess-three pulley (12) is set on the bearing pin corresponding with it (16), and the lower end of each bearing pin (16) is contained on the bearing (15); The bottom surface of the lower surface of bearing (15) and top box (1-1) is affixed; The front of top box (1-1) and dial (14) corresponding section are provided with dial groove (1-1-2), and the side that dial (14) is positioned at top box (1-1) inwall is exposed at outward outside the dial groove (1-1-2), and spring (17) is positioned on the closed line (11) at casing (1) inwall place; And the two ends of spring (17) are connected with closed line (11); It is other that pointer (18) is positioned at spring (17), and the tail end of pointer (18) is connected on the closed line (11), rule (4) be arranged on the positive of top box (1-1) and be positioned at pointer (18) below; Magnetic field measuring apparatus (20) is contained in the nowel (1-2); The sidewall of casing (1) is provided with two short solenoid contacts (5), two long solenoid contacts (6), two the first Helmholtz coils contacts (24) and two second Helmholtz coils contacts (25), and the two ends of short solenoid (3) are connected with two short solenoid contacts (5) through lead respectively, and the two ends of long solenoid (7) are connected with two long solenoid contacts (6) through lead respectively; The two ends of a Helmholtz coils (22) are connected with two first Helmholtz coils contacts (24) through lead respectively, and the two ends of another Helmholtz coils (22) are connected with two second Helmholtz coils contacts (25) through lead respectively.
2. according to the said circular electric current axis of claim 1 magnetic induction density experiment instrument, it is characterized in that: the length of short solenoid (3) is less than 300mm, and the external diameter of short solenoid (3) is 100mm～150mm.
3. according to claim 1 or 2 said circular electric current axis magnetic induction density experiment instruments, it is characterized in that: the length of long solenoid (7) is greater than 450mm, and the external diameter of long solenoid (7) is less than 45mm.
4. according to the said circular electric current axis of claim 3 magnetic induction density experiment instrument, it is characterized in that: the external diameter of each Helmholtz coils (22) is greater than 200mm, and each Helmholtz coils (22) is 700 circles.
5. according to the said circular electric current axis of claim 4 magnetic induction density experiment instrument, it is characterized in that: long solenoid (7), short solenoid (3) and two Helmholtz coilss (22) are coaxial device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220134882 CN202502661U (en) | 2012-03-25 | 2012-03-25 | Circular current axis magnetic induction intensity experiment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220134882 CN202502661U (en) | 2012-03-25 | 2012-03-25 | Circular current axis magnetic induction intensity experiment instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502661U true CN202502661U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220134882 Expired - Fee Related CN202502661U (en) | 2012-03-25 | 2012-03-25 | Circular current axis magnetic induction intensity experiment instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN202502661U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205314A (en) * | 2016-09-18 | 2016-12-07 | 江南大学 | A kind of magnetic field measuring apparatus |
| CN108154773A (en) * | 2018-02-02 | 2018-06-12 | 浙江大学城市学院 | A kind of novel and multifunctional solenoid internal magnetic field distribution measuring experiment instrument |
-
2012
- 2012-03-25 CN CN 201220134882 patent/CN202502661U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205314A (en) * | 2016-09-18 | 2016-12-07 | 江南大学 | A kind of magnetic field measuring apparatus |
| CN108154773A (en) * | 2018-02-02 | 2018-06-12 | 浙江大学城市学院 | A kind of novel and multifunctional solenoid internal magnetic field distribution measuring experiment instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20130325 |