Test instrument for magnetic field distribution characteristics of current-carrying conductor

Abstract

This invention provides an instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor, comprising a device and an electrical box. The device has a first guide rail and a second guide rail, an adjusting handwheel installed at the bottom of the device, and a long scale on the device. A connecting bracket is fixedly connected to the right end of the device, and a sensor measuring device is installed on the connecting bracket. A conductive ring measuring device is installed on the first guide rail, and a straight wire measuring device is installed on the second guide rail. A zero-gauss chamber is installed inside the electrical box. This invention relates to the field of experimental instruments, and the instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor solves the problems of insufficient measurement accuracy and inconvenient operation in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of experimental instruments, and in particular to an instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor. Background Technology

[0002] The experimental instruments currently used in schools are generally sensors, measuring devices, conductive rings, and straight wire devices, all of which are movable and require the operator to determine the measurement position. Furthermore, the lack of a zero-gauss chamber makes it impossible to determine whether the sensors are precisely calibrated, leading to controversy regarding the accuracy of the measured magnetic field. Utility Model Content

[0003] In view of this, the present invention aims to provide a measuring instrument for the magnetic field distribution characteristics of a current-carrying conductor, so as to solve the problems of insufficient measurement accuracy and inconvenient operation in the prior art.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] An instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor includes a device and an electrical box. The device is provided with a first guide rail and a second guide rail. An adjusting handwheel is installed at the bottom of the device. The device is provided with a first long scale and a second long scale. A connecting bracket is fixedly connected to the right end of the base frame. A sensor measuring device is installed on the connecting bracket.

[0006] A conductive ring measuring device is installed on the first guide rail, and a straight wire measuring device is installed on the second guide rail;

[0007] The electrical box is equipped with a zero-gauss chamber.

[0008] Furthermore, the straight conductor measuring device includes a first connecting frame, a fixed plate, a second movable seat, a movable block, a first auxiliary ruler, a second connecting nail, a second KONE seat, a first straight conductor fixing screw, a straight conductor, a first KONE seat, a second straight conductor fixing screw, a first connecting nail, a locking nut, a welding piece, a conductive wire, a connecting piece, a fixing nail, a second connecting frame, a fourth connecting nail, and a fifth connecting nail;

[0009] The bottom of the fixed plate is connected to the second movable seat via the fifth connecting nail, and the movable block is installed at the bottom of the second movable seat;

[0010] The fixing plate is connected to the connecting frame via the fourth connecting nail, and the connecting frame is connected to the first connecting frame via the second connecting nail;

[0011] The two ends of the straight conductor pass through the first connecting frame and the second connecting frame respectively, and are fixed to the first connecting frame and the second connecting frame by the first straight conductor fixing screw and the second straight conductor fixing screw;

[0012] The second connecting frame is connected to the connecting frame by the first connecting nail. There are two fixing nails and two connecting pieces. The two fixing nails are respectively installed at the top and bottom of the straight conductor, and the two connecting pieces are respectively located between the fixing nails and the top and bottom of the straight conductor.

[0013] The second Connie seat and the first Connie seat are respectively mounted on the first connecting frame and the connecting frame, and the positions of the first Connie seat and the second Connie seat correspond;

[0014] The first Connie seat is mounted on the second connecting bracket via the locking nut, the welding plate is mounted on the left side of the locking nut, and a conductive wire is connected between the connecting plate and the welding plate;

[0015] The first auxiliary ruler is located on the front of the second movable seat.

[0016] Furthermore, the conductive ring measuring device includes a first movable seat, a slider, a junction box, a limiting plate, a connecting plate, a ring wire bracket, a first wire, a second wire, a third wire, a second auxiliary ruler, a sixth connecting nail, a seventh connecting nail, an eighth connecting nail, and a third Connie seat;

[0017] The first movable seat is connected to the junction box via the eighth connecting pin. The junction box is connected to the reinforcing plate via the sixth connecting pin. The reinforcing plate and the limiting plate are connected to the connecting plate via the seventh connecting pin. The connecting plate is provided with a circular wire bracket. The circular wire bracket is fitted with a third wire, a second wire, and a first wire from the outside to the inside. The slider is installed at the bottom of the first movable seat via the eighth connecting pin. The second auxiliary ruler is set on the front of the first movable seat. The third Connie seat is installed on the upper surface of the junction box.

[0018] Furthermore, the sensor measuring device includes a sensor connector, a connecting block, a measuring frame, a measuring rod, a first pure iron, a first pure iron sleeve, a sensor, a scale line, a sensor bracket, a second pure iron sleeve, a second pure iron, a pressure ring, and a locking pin hole;

[0019] The sensor connector is fixedly connected to the right side of the connecting block. The measuring frame is fixedly connected to the connecting block via the ninth connecting nail. The measuring rod is fixedly installed on the left side of the measuring frame. The engraving line is set on the surface of the measuring rod. The measuring rod is hollow inside. The sensor bracket is installed inside the measuring rod. The sensor is installed on the sensor bracket. The second pure iron and the first pure iron are respectively installed on the left and right sides of the sensor and both abut against the sensor. The first pure iron sleeve is fitted onto the first pure iron. The second pure iron sleeve is fitted onto the second pure iron. The pressure ring is press-fitted onto the left end of the second pure iron sleeve.

[0020] The locking pin holes are formed on the measuring frame, and there are two locking pin holes. A hand nail is installed in the locking pin holes.

[0021] Furthermore, the zero-gauss chamber includes an outer casing, a coil, a retaining ring, a frame, a rear plug, and a circuit board;

[0022] The frame is installed inside the outer cover, the coil is fitted onto the frame, the retaining ring is fitted onto the left end of the retaining ring, the rear plug is pressed onto the retaining ring, and the circuit board is installed on the left end of the outer cover.

[0023] Furthermore, a right-angle connecting block is installed on the base frame, and the right-angle connecting block connects the first guide rail and the second guide rail through connecting pins. The right-angle connecting block is located on the right side of the connecting bracket.

[0024] Furthermore, the diameter of the first wire is 40mm, the diameter of the second wire is 60mm, and the diameter of the third wire is 120mm.

[0025] Compared with the prior art, this utility model has the following advantages:

[0026] The instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor described in this utility model includes: a first guide rail, a second guide rail, an adjusting handwheel, and a long scale, to provide a stable measurement platform and precise position adjustment, ensuring the stability and accuracy of the measurement process; a connecting bracket and a sensor measuring device mounted on it to fix the sensor position, reduce positional errors during the measurement process, and improve the reliability of the measurement data; a conductive ring measuring device mounted on the first guide rail and a straight wire measuring device mounted on the second guide rail to flexibly adjust the measurement object according to different experimental needs, facilitating the measurement of the magnetic field distribution of conductive rings and straight wires of different radii; a zero-gauss chamber installed inside the electrical box to accurately calibrate the sensor, eliminate the influence of environmental factors such as the geomagnetic field on the measurement results, and improve the accuracy of magnetic field measurement; a right-angle connecting block to enhance the overall structural stability of the instrument, ensuring tight connection of each component, reducing vibration and displacement during the experiment, and ensuring measurement accuracy; and first, second, and third wires of different diameters to meet the measurement needs of the magnetic field distribution of conductive rings of different sizes, expanding the applicability of the instrument and making its experimental functions more diversified. Attached Figure Description

[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall device for measuring the magnetic field distribution characteristics of a current-carrying conductor according to an embodiment of this utility model;

[0029] Figure 2 This is a right view of the device for measuring the magnetic field distribution characteristics of a current-carrying conductor according to an embodiment of this utility model;

[0030] Figure 3 This is a top view of the device for measuring the magnetic field distribution characteristics of a current-carrying conductor according to an embodiment of this utility model;

[0031] Figure 4 This is a front view of the straight conductor measuring device described in an embodiment of the present invention;

[0032] Figure 5 This is a right view of the straight conductor measuring device described in this embodiment of the present invention;

[0033] Figure 6 This is a top view of the straight conductor measuring device described in an embodiment of the present invention;

[0034] Figure 7 This is a front view of the conductive ring measuring device according to an embodiment of the present invention;

[0035] Figure 8 This is a right view of the conductive ring measuring device described in this embodiment of the present invention;

[0036] Figure 9 This is a top view of the conductive ring measuring device described in an embodiment of the present invention;

[0037] Figure 10 This is a front view of the sensor measuring device described in an embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram of the sensor measuring device described in an embodiment of the present invention;

[0039] Figure 12 This is a schematic diagram of the zero-gauss chamber described in an embodiment of the present invention;

[0040] Figure 13 This is a front view of the electrical box described in an embodiment of the present utility model;

[0041] Figure 14 This is a rear view of the electrical box described in an embodiment of the present utility model;

[0042] Figure 15 This is a schematic diagram of the connecting bracket described in an embodiment of the present utility model;

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. First guide rail; 2. Second guide rail; 3. Straight guide wire measuring device; 301. First connecting frame; 302. Fixing plate; 303. Second movable seat; 304. Movable block; 305. First auxiliary ruler; 306. Second connecting pin; 307. Second KONE seat; 308. First straight guide wire fixing screw; 309. Connecting frame; 310. Straight guide wire; 311. First KONE seat; 312. Second straight guide wire fixing screw; 313. 314. First connecting pin; 315. Locking nut; 316. Welding piece; 317. Conductive wire; 318. Connecting piece; 319. Fixing pin; 320. Second connecting frame; 321. Fourth connecting pin; 322. Fifth connecting pin; 4. Conductive ring measuring device; 401. First movable seat; 402. Slider; 403. Junction box; 404. Limiting plate; 405. Connecting plate; 406. Ring wire bracket; 407. First wire; 408. Second conductor; 409. Third conductor; 410. Second vernier scale; 411. Sixth connecting pin; 412. Seventh connecting pin; 413. Eighth connecting pin; 414. Third Konnie mount; 415. Reinforcing plate; 5. Sensor measuring device; 501. Sensor connector; 502. Connecting block; 503. Measuring frame; 504. Measuring rod; 505. First pure iron; 506. First pure iron sleeve; 507. Sensor; 50 8. Grating line; 509. Sensor bracket; 510. Second pure iron sleeve; 511. Second pure iron; 512. Pressure ring; 513. Locking pin hole; 514. Ninth connecting pin; 6. Right angle connecting block; 7. Adjusting handwheel; 8. Electrical box; 9. Outer cover; 10. Coil; 11. Retaining ring; 12. Frame; 13. Rear plug; 14. Circuit board; 15. First long scale; 16. Connecting bracket; 17. Second long scale; 18. Hand nail. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0046] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] This embodiment relates to a magnetic field distribution characteristic measuring instrument for current-carrying conductors, which can solve the problems of insufficient measurement accuracy and inconvenient operation in the prior art.

[0049] Based on the above design concept, an exemplary structure of the current-carrying conductor magnetic field distribution characteristic measuring instrument in this embodiment is as follows: Figures 1-15 As shown, it mainly includes a device and an electrical box 8. The device is equipped with a first guide rail 1 and a second guide rail 2. An adjusting handwheel 7 is installed at the bottom of the device. A first long scale 15 and a second long scale 17 are installed on the device. A connecting frame 309 is fixedly connected to the right end of the base frame. A sensor measuring device 5 is installed on the connecting frame 309. A conductive ring measuring device 4 is installed on the first guide rail 1, and a straight wire measuring device 3 is installed on the second guide rail 2. A zero-gauss chamber is installed inside the electrical box 8. This is to provide a stable measuring platform and a precise measuring environment for determining the magnetic field distribution characteristics of current-carrying conductors, so as to realize the accurate determination of the magnetic field distribution of different conductors.

[0050] The straight conductor measuring device 3 includes a first connecting frame 301, a fixing plate 302, a second movable seat 303, a movable block 304, a first auxiliary ruler 305, a second connecting pin 306, a second Connie seat 307, a first straight conductor fixing screw 308, a straight conductor 310, a first Connie seat 311, a second straight conductor fixing screw 312, a first connecting pin 313, a locking nut 314, a welding piece 315, a conductive wire 316, a connecting piece 317, a fixing pin 318, and a second... Connecting bracket 319, fourth connecting pin 320, and fifth connecting pin 321; the bottom of fixing plate 302 is connected to second movable seat 303 via fifth connecting pin 321, and movable block 304 is installed on the bottom of second movable seat 303; fixing plate 302 is connected to connecting bracket 309 via fourth connecting pin 320, and connecting bracket 309 is connected to first connecting bracket 301 via second connecting pin 306; the two ends of straight wire 310 pass through first connecting bracket 301 and second connecting bracket 310 respectively. 9. The first straight wire fixing screw 308 and the second straight wire fixing screw 312 are fixed to the first connecting frame 301 and the second connecting frame 319. The second connecting frame 319 is connected to the connecting frame 309 by the first connecting nail 313. There are two fixing nails 318 and two connecting pieces 317. The two fixing nails 318 are respectively installed at the top and bottom of the straight wire 310, and the two connecting pieces 317 are respectively located between the fixing nail 318 and the top and bottom of the straight wire 310. The second Connie seat 307 and the first Connie seat 311 are respectively installed on the first connecting frame 301 and the connecting frame 309, and the positions of the first Connie seat 311 and the second Connie seat 307 correspond. The first Connie seat 311 is installed on the second connecting frame 319 by the locking nut 314. The welding piece 315 is installed on the left side of the locking nut 314. A conductive wire 316 is connected between the connecting piece 317 and the welding piece 315. The first auxiliary ruler 305 is located on the front of the second moving seat 303.

[0051] The straight conductor measuring device 3 is provided to accurately measure the magnetic field strength generated by the straight conductor under different currents and distances, ensuring the accuracy and reliability of the measurement data.

[0052] The conductive ring measuring device 4 includes a first movable base 401, a slider 402, a junction box 403, a limiting plate 404, a connecting plate 405, a ring wire bracket 406, a first wire 407, a second wire 408, a third wire 409, a second vernier scale 410, a sixth connecting pin 411, a seventh connecting pin 412, an eighth connecting pin 413, and a third KONE seat 414; the first movable base 401 is connected to the junction box 403 via the eighth connecting pin 413, and the junction box 403 is connected to the reinforcing plate via the sixth connecting pin 411. Plate 415 is connected, and reinforcing plate 415 and limiting plate 404 are connected to connecting plate 405 by seventh connecting nail 412. Connecting plate 405 is provided with a circular wire bracket 406. The circular wire bracket 406 is fitted with third wire 409, second wire 408 and first wire 407 from the outside to the inside. Slider 402 is installed at the bottom of first moving seat 401 by eighth connecting nail 413. Second scale 410 is set on the front of first moving seat 401. Third Connie seat 414 is installed on the upper end face of junction box 403.

[0053] The conductive ring measuring device 4 is provided to facilitate the measurement of the magnetic field strength of conductive rings of different radii under different currents and distances, thus meeting the comprehensive measurement requirements of the magnetic field distribution characteristics of conductive rings.

[0054] The sensor measuring device 5 includes a sensor connector 501, a connecting block 502, a measuring frame 503, a measuring rod 504, a first pure iron 505, a first pure iron sleeve 506, a sensor 507, a scale line 508, a sensor bracket 509, a second pure iron sleeve 510, a second pure iron 511, a pressure ring 512, and a locking pin hole 513. The sensor connector 501 is fixedly connected to the right side of the connecting block 502. The measuring frame 503 is fixedly connected to the connecting block 502 via a ninth connecting pin 514. The measuring rod 504 is fixedly installed on the left side of the measuring frame 503. The scale line 508 is provided on the surface of the measuring rod 504. The measuring rod 504 is hollow inside. The sensor bracket 509 is installed inside the measuring rod 504. The sensor 507 is installed on the sensor bracket 509. The second pure iron 511 and the first pure iron 505 are respectively installed on the left and right sides of the sensor 507, and both abut against the sensor 507. The first pure iron sleeve 506 is fitted onto the first pure iron 505, and the second pure iron sleeve 510 is fitted onto the second pure iron 511. The pressure ring 512 is pressed onto the left end of the second pure iron sleeve 510. The locking screw hole 513 is opened on the measuring frame 503, and there are two locking screw holes 513. A hand nail 18 is installed in the locking screw hole 513.

[0055] The sensor measurement device 5 is provided to facilitate stable installation and accurate measurement of the sensor, while also effectively shielding and protecting the sensor, thereby improving measurement sensitivity and accuracy.

[0056] The zero-gauss chamber includes an outer cover 9, a coil 10, a retaining ring 11, a frame 12, a rear plug 13, and a circuit board 14. The frame 12 is installed inside the outer cover 9, the coil 10 is fitted onto the frame 12, the retaining ring 11 is fitted onto the left end of the retaining ring 11, the rear plug 13 is press-fitted onto the retaining ring 11, and the circuit board 14 is installed on the left end of the outer cover 9.

[0057] By incorporating a zero-gauss chamber to provide a reference environment free from magnetic field interference for sensor measurements, the accuracy and reliability of sensor measurements are ensured, thereby improving the overall measurement precision of the instrument.

[0058] A right-angle connecting block 6 is installed on the base frame, which connects the first guide rail 1 and the second guide rail 2 through connecting pins. The right-angle connecting block 6 is located on the right side of the connecting bracket 16 to enhance the structural stability of the base frame, provide more stable support for each measuring device, and ensure the smooth operation of the measurement process.

[0059] The diameter of the first wire 407 is 40mm, the diameter of the second wire 408 is 60mm, and the diameter of the third wire 409 is 120mm, so as to meet different experimental needs. The magnetic field distribution characteristics of conductive rings with different radii can be measured respectively, enriching the experimental content and improving the versatility and practicality of the instrument.

[0060] When using the magnetic field distribution characteristic measuring instrument for a current-carrying conductor described in this embodiment:

[0061] 1. Calibrate sensor 507: Loosen the two pins 18 on the back of sensor measuring device 5, remove sensor measuring frame 503 from connecting bracket 16, connect sensor 507 connector to electrical box 8 with wires, place the sensor in the zero-gauss chamber of electrical box 8, press the zero-adjustment button to check if the magnetic field strength is zero. If not, adjust the zero-adjustment knob of the electrical box to zero. Then press calibration, adjust the magnetic field calibration adjustment knob of the electrical box to display the calibration data. Remove sensor 507. It should be noted that when sensor 507 is removed from the zero magnetic field chamber and moved away from the instrument, the magnetic field value displayed is the space magnetic field, which includes the Earth's magnetic field.

[0062] 2. Secure the connecting bracket 16 to the two locking screw holes 513 on the measuring frame 503 of the sensor 507 using two hand nails 18, so that it is fixed on the connecting bracket 16.

[0063] 3. Experiment with straight conductor measuring device 3:

[0064] (1) Measure the relationship between the magnetic field B generated by the straight conductor 310 and the current I:

[0065] Connect the first Connie seat 311 and the second Connie seat 307 on the straight wire 310 to the connecting seat at the back of the electrical box 8 with a wire. Move the second movable seat 303 of the straight wire 310 to bring the straight wire 310 closer to the sensor 507. It should be noted that the position of the scale line 508 on the sensor 507 has been determined at the factory. Keep the position unchanged, adjust the current of the electrical box 8 from 0 to 8A, record the value of the magnetic induction intensity B for each 1A increase, and plot the curve.

[0066] (2) The relationship between the magnetic field B generated by the straight conductor 310 and the distance R:

[0067] When the current is applied to 8A, move the second movable seat 303 of the straight wire 310, recording data every 1 mm until the magnetic field B versus distance R reaches 10 mm, and plot the curve. After the experiment, remove the second movable seat 303 and disconnect the sensor 507 connection wire.

[0068] 4. Experiment with conductive ring measuring device 4:

[0069] (1) Measure the relationship between the magnetic field B generated by the conductive ring and the current I;

[0070] Connect the third Connie seat 414 of the first wire 407 with φ40 to the electrical box 8. Move the first movable seat 401 so that the center of the ring is aligned with the scale line 508 of the sensor 507. Keep the position unchanged. Increase the current from "0" to 8A and record the value of the magnetic induction intensity B at each point when the current changes by 1A, and plot the curve.

[0071] (2) The relationship between the magnetic field B generated by the conductive ring and the distance X;

[0072] With the protection 8A unchanged, the first moving seat 401 moves to the left or right from the center of the sensing line 508, moves to 10 mm, and then moves back to record the value of magnetic field B and distance X. The value of X is recorded every 0.5 mm and a curve is plotted.

[0073] Replace the φ40 first wire 407 with the φ80 second wire 408 and the φ120 third wire 409, record the values ​​of magnetic field B and distance X respectively, and draw curves.

[0074] The current-carrying conductor magnetic field distribution characteristic measuring instrument using the above implementation scheme has achieved accurate measurement of the magnetic field distribution characteristics of current-carrying conductors.

[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for measuring the magnetic field distribution characteristics of a current-carrying conductor, comprising a device and an electrical box (8), wherein the device is provided with a first guide rail (1) and a second guide rail (2), an adjusting handwheel (7) is installed at the bottom of the device, and a first long scale (15) and a second long scale (17) are provided on the device, characterized in that: A connecting bracket (16) is fixedly connected to the right end of the device, and a sensor measuring device (5) is installed on the connecting bracket (16). A conductive ring measuring device (4) is installed on the first guide rail (1), and a straight wire measuring device (3) is installed on the second guide rail (2). The electrical box (8) is equipped with a zero-gauss chamber.

2. The instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor according to claim 1, characterized in that: The straight conductor measuring device (3) includes a first connecting frame (301), a fixing plate (302), a second movable seat (303), a movable block (304), a first auxiliary ruler (305), a second connecting nail (306), a second Connie seat (307), a first straight conductor fixing screw (308), a straight conductor (310), a first Connie seat (311), a second straight conductor fixing screw (312), a first connecting nail (313), a locking nut (314), a welding piece (315), a conductive wire (316), a connecting piece (317), a fixing nail (318), a second connecting frame (319), a fourth connecting nail (320), and a fifth connecting nail (321). The bottom of the fixed plate (302) is connected to the second movable seat (303) via the fifth connecting nail (321), and the movable block (304) is installed on the bottom of the second movable seat (303); The fixing plate (302) is connected to the connecting frame (309) via the fourth connecting nail (320), and the connecting frame (309) is connected to the first connecting frame (301) via the second connecting nail (306); The two ends of the straight conductor (310) pass through the first connecting frame (301) and the second connecting frame (319) respectively, and are fixed on the first connecting frame (301) and the second connecting frame (319) by the first straight conductor fixing screw (308) and the second straight conductor fixing screw (312); The second connecting frame (319) is connected to the connecting frame (309) by the first connecting nail (313). There are two fixing nails (318) and two connecting pieces (317). The two fixing nails (318) are respectively installed at the top and bottom of the straight conductor (310), and the two connecting pieces (317) are respectively located between the fixing nails (318) and the top and bottom of the straight conductor (310). The second Connie seat (307) and the first Connie seat (311) are respectively mounted on the first connecting frame (301) and the connecting frame (309), and the first Connie seat (311) corresponds to the second Connie seat (307); The first Connie seat (311) is mounted on the second connecting bracket (319) via the locking nut (314), the welding piece (315) is mounted on the left side of the locking nut (314), and a conductive wire (316) is connected between the connecting piece (317) and the welding piece (315). The first auxiliary ruler (305) is located on the front of the second movable seat (303).

3. The instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor according to claim 1, characterized in that: The conductive ring measuring device (4) includes a first movable seat (401), a slider (402), a junction box (403), a limiting plate (404), a connecting plate (405), a ring wire bracket (406), a first wire (407), a second wire (408), a third wire (409), a second auxiliary ruler (410), a sixth connecting pin (411), a seventh connecting pin (412), an eighth connecting pin (413), and a third Connie seat (414). The first movable seat (401) is connected to the junction box (403) via the eighth connecting pin (413). The junction box (403) is connected to the reinforcing plate (415) via the sixth connecting pin (411). The reinforcing plate (415) and the limiting plate (404) are connected to the connecting plate (405) via the seventh connecting pin (412). The connecting plate (405) is provided with a circular wire bracket (406). The circular wire bracket (406) is fitted with a third wire (409), a second wire (408) and a first wire (407) from the outside to the inside. The slider (402) is installed at the bottom of the first movable seat (401) via the eighth connecting pin (413). The second auxiliary ruler (410) is set on the front of the first movable seat (401). The third Connie seat (414) is installed on the upper surface of the junction box (403).

4. The instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor according to claim 1, characterized in that: The sensor measuring device (5) includes a sensor connector (501), a connector (502), a measuring frame (503), a measuring rod (504), a first pure iron (505), a first pure iron sleeve (506), a sensor (507), a scribing line (508), a sensor bracket (509), a second pure iron sleeve (510), a second pure iron (511), a pressure ring (512), and a locking pin hole (513). The sensor connector (501) is fixedly connected to the right side of the connector block (502). The measuring frame (503) is fixedly connected to the connector block (502) via the ninth connecting pin (514). The measuring rod (504) is fixedly installed on the left side of the measuring frame (503). The engraving line (508) is set on the surface of the measuring rod (504). The measuring rod (504) is hollow inside. The sensor bracket (509) is installed inside the measuring rod (504). The sensor (507) is mounted on the sensor bracket (509). The second pure iron (511) and the first pure iron (505) are respectively mounted on the left and right sides of the sensor (507) and both abut against the sensor (507). The first pure iron sleeve (506) is fitted onto the first pure iron (505), and the second pure iron sleeve (510) is fitted onto the second pure iron (511). The pressure ring (512) is press-fitted onto the left end of the second pure iron sleeve (510). The locking pin hole (513) is opened on the measuring frame (503), and there are two locking pin holes (513). A hand nail (18) is installed in the locking pin hole (513).

5. The instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor according to claim 1, characterized in that: The zero-gauss chamber includes an outer casing (9), a coil (10), a retaining ring (11), a frame (12), a rear plug (13), and a circuit board (14). The frame (12) is installed inside the outer cover (9), the coil (10) is fitted on the frame (12), the retaining ring (11) is fitted on the left end of the retaining ring (11), the rear plug (13) is pressed onto the retaining ring (11), and the circuit board (14) is installed on the left end of the outer cover (9).

6. The instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor according to claim 1, characterized in that: The device is equipped with a right-angle connecting block (6), which connects the first guide rail (1) and the second guide rail (2) through connecting pins. The right-angle connecting block (6) is located on the right side of the connecting bracket (16).

7. The instrument for measuring the magnetic field distribution characteristics of a current-carrying conductor according to claim 3, characterized in that: The diameter of the first conductor (407) is 40 mm, the diameter of the second conductor (408) is 60 mm, and the diameter of the third conductor (409) is 120 mm.

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