CN213877718U - Magnetizing and demagnetizing device for small circular ring type magnetic system - Google Patents
Magnetizing and demagnetizing device for small circular ring type magnetic system Download PDFInfo
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- CN213877718U CN213877718U CN202022768084.7U CN202022768084U CN213877718U CN 213877718 U CN213877718 U CN 213877718U CN 202022768084 U CN202022768084 U CN 202022768084U CN 213877718 U CN213877718 U CN 213877718U
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Abstract
The utility model relates to a moment force motor technical field specifically is a fill demagnetizer to small-size ring type magnetic system, and the device includes quick-witted case, work window, two yoke type magnetic circuit frock coils, magnetron resistance, tap changing transformer, alternating current ammeter, button switch, direct current ammeter, silicon controlled rectifier full-bridge rectifier circuit, relay, No. two relays. The utility model discloses application prospect is wide, has apparent military, economy and social, has simply, safe, reliable, has small, remove in a flexible way, and the manipulation is simple, uses and maintains characteristics such as convenient, can effectively resume the magnetic field intensity of the original design condition of small-size ring type magnetic system and continue to use steady quality, makes 100% reuse of the magnetic system of magnetic field intensity decay, and repair efficiency improves 40%; the permanent magnet magnetizing and demagnetizing device is suitable for magnetizing and demagnetizing a magnetic system of a torque motor of an electrohydraulic amplifier of a certain airplane and magnetizing and demagnetizing small permanent magnet materials with the magnetic flux direction being the longitudinal axis direction.
Description
Technical Field
The utility model relates to a moment force motor technical field specifically is a magnetizing and demagnetizing device to small-size ring type magnetic system.
Background
The small-sized circular ring type magnetic system is used in a torque motor of an airplane electrohydraulic amplifier and provides a constant magnetic field for the torque motor. The fixed magnetic flux of the constant magnetic field and the control magnetic flux generated by the electric transmission signal through the coil act together, and the direction and the magnitude of the electric transmission current are utilized to control the superposition or subtraction of magnetic lines of force in the left magnetic gap space and the right magnetic gap space of the torque motor, so that the motor generates electromagnetic torque with a deflection direction, and the electrohydraulic amplifier is driven to work. Because the airplane is lightened and the design of a miniaturized structure is required, the structure of the small-sized circular magnetic system adopts a mode that two permanent magnets and two magnetizers are welded and combined together at intervals through tin-lead solder to form a circular magnetic circuit assembly with a specific structure.
Although the small-sized circular ring-shaped magnetic system is a welding assembly of the permanent magnet and the magnetizer, the small-sized circular ring-shaped magnetic system has the technical characteristics of permanent magnet materials, namely, the remanence, the coercive force and the magnetic energy product of the small-sized circular ring-shaped magnetic system after being integrally formed. The magnetic line distribution direction of two permanent magnets of the small-sized circular ring type magnetic system is mutually vertical to the direction of magnetic pole induced by a magnetizer (fixed magnetic flux effectively utilized by an electro-hydraulic amplifier torque motor), the effective magnetic flux participating in closed-loop control of the magnetic line of force of the torque motor occupies a small proportion, and brazing materials are arranged between the permanent magnets and the magnetizer, so that the magnetic resistance is large, the magnetic resistance is improper in long-term use or overhaul, when the defect of cutting magnetic induction lines exists, the magnetic conductivity can be changed, the magnetic flux in a magnetic circuit is distorted, the flow direction of the magnetic induction lines is changed to form magnetic flux leakage, the magnetic field intensity has the attenuation phenomenon, the performance requirement of the electro-hydraulic amplifier cannot be met, and the magnetic system is scrapped. Aiming at the small circular ring type magnetic system, the invention provides a method and a device for magnetization and demagnetization, so that the small circular ring type magnetic system recovers the magnetic field intensity in the original design state and continues to be used, and the method and the device have important significance in the maintenance operation of the electro-hydraulic amplifier.
At present, most magnetizing devices generally adopt capacitive pulse current for magnetizing, and except that constant voltage control is carried out on capacitor voltage to ensure magnetizing quality and consistency, an automatic capacitor discharging circuit after shutdown is required to be configured so as to ensure personal safety after rapid discharging, and the circuit is complex. Meanwhile, in order to ensure that the capacitance capacity is within a certain range and cannot exceed withstand voltage to cause capacitor explosion, the quality of the capacitor needs to be checked regularly, too much labor is involved, and the maintenance cost is increased.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a to small-size ring type magnetic system fill demagnetizer.
The utility model discloses the technical problem that will solve adopts following technical scheme to realize:
a magnetizing and demagnetizing device for a small circular magnetic system comprises a case, a working window for clamping and fixing the small circular magnetic system to be tested, a double-yoke magnetic circuit tool coil in insulation connection with the working window, a magnetic tube resistor, a voltage regulating transformer which is matched with the double-yoke magnetic circuit tool coil to generate an alternating magnetic field, an alternating current ammeter for indicating the size of the alternating current when the small circular magnetic system is demagnetized, a button switch for selecting magnetizing and demagnetizing, a direct current ammeter for monitoring exciting current in real time in matching with the magnetic tube resistor, a silicon controlled full bridge rectifying circuit for driving the double-yoke magnetic circuit tool coil to generate a stable target magnetic field as a direct current magnetic field signal source, a first relay for switching on the demagnetizing circuit and a second relay for switching on the magnetizing circuit;
the working window, the double-yoke magnetic circuit tool coil, the magnetic tube resistor, the voltage regulating transformer, the alternating current ammeter, the button switch, the direct current ammeter, the silicon controlled full-bridge rectifying circuit, the first relay and the second relay are correspondingly arranged in the case.
Furthermore, the case is also provided with a power indicator light for indicating the power state, a button switch for controlling the second relay to be switched on or off, and a square button switch for switching on or off the power.
Further, the working window comprises a sliding chute assembly with a stud, sliding blocks symmetrically distributed on the sliding chute assembly with the stud, and a screwing nut arranged on the sliding blocks and installed on the stud, wherein the sliding chute assembly with the stud is in insulation connection with the double-yoke magnetic circuit tooling coil.
Furthermore, the double-yoke magnetic circuit tool coil comprises two Helmholtz coil winding packages connected with the sliding chute assembly with the stud in an insulating mode and a double-yoke magnetic circuit tool connected with the two Helmholtz coil winding packages, and the double-yoke magnetic circuit tool is installed at the bottom in the case in an insulating mode.
The utility model has the advantages that:
compared with the prior art, the utility model discloses application prospect is wide, has apparent military affairs, economy and social, has simply, and is safe, reliable, has small, remove in a flexible way, and the manipulation is simple, uses and maintains characteristics such as convenient, can effectively resume the magnetic field intensity of the original design condition of small-size ring type magnetic system and continue to use the steady quality, makes 100% reuse of the magnetic system of magnetic field intensity decay, and the repair efficiency improves 40%; the permanent magnet magnetizing and demagnetizing device is suitable for magnetizing and demagnetizing a magnetic system of a torque motor of an electrohydraulic amplifier of a certain airplane and magnetizing and demagnetizing small permanent magnet materials with the magnetic flux direction being the longitudinal axis direction.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of a middle-double yoke type magnetic circuit tooling coil of the present invention;
fig. 3 is an electrical schematic diagram of the present invention.
In the figure: 1. a working window; 101. a chute assembly with a stud; 102. screwing down the nut; 103. a slider; 2. a double yoke type magnetic circuit tooling coil; 201. winding a Helmholtz coil; 202. a double yoke type magnetic circuit tool; 3. a magnetic tube resistance; 4. a voltage regulating transformer; 5. a power indicator light; 6. an alternating current meter; 7. a chassis; 8. a push button switch; 9. a square button switch; 10. a toggle switch; 11. a direct current ammeter; 12. a thyristor full-bridge rectifier circuit; 13. a first relay; 14. and a second relay.
Detailed Description
In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the present invention will be further explained with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 3, a magnetizing and demagnetizing apparatus for a small toroidal magnetic system, the device comprises a case 7, a working window 1 for clamping and fixing a small-sized tested circular magnetic system, a double-yoke magnetic circuit tool coil 2 in insulation connection with the working window 1, a magnetic tube resistor 3, a voltage regulating transformer 4 which is matched with the double-yoke magnetic circuit tool coil 2 to generate an alternating magnetic field, an alternating current ammeter 6 for indicating the size of the alternating current when the small-sized circular magnetic system is demagnetized, a switch 10 for selecting magnetization and demagnetization, a direct current ammeter 11 for monitoring the excitation current in real time in cooperation with the magnetic tube resistor 3, a full-bridge silicon controlled rectifier circuit 12 for driving the double-yoke magnetic circuit tool coil 2 to generate a stable target magnetic field as a direct current magnetic field signal source, a first relay 13 for switching on the demagnetization circuit and a second relay 14 for switching on the magnetization circuit;
the working window 1, the double-yoke magnetic circuit tool coil 2, the magnetic tube resistor 3, the voltage regulating transformer 4, the alternating current ammeter 6, the button switch 10, the direct current ammeter 11, the silicon controlled full-bridge rectification circuit 12, the first relay 13 and the second relay 14 are correspondingly arranged in the case 7.
The case 7 is also provided with a power indicator lamp 5 for indicating the power state, a button switch 8 for controlling the second relay 14 to be switched on or off, and a square button switch 9 for switching on or off the power.
As a further improvement of the present invention, the device further comprises a related fitting member, such as: power cords, fuses, sockets, etc. The external dimension of the device is as follows: 380mm (length) X280 mm (width) X240 mm (height), and weighing 10 kg.
As a further improvement of the present invention, the working window 1 includes a sliding groove assembly 101 with a stud, a sliding block 103 symmetrically distributed on the sliding groove assembly 101 with a stud, a tightening nut 102 disposed on the sliding block 103 and mounted on the stud, and the sliding groove assembly 101 with a stud is connected to the double-yoke magnetic circuit tooling coil 2 in an insulating manner.
The size of the tightening nut 102: the thickness is 10mm, the outer diameter is 22mm, the middle is an M5 threaded hole, and the threaded hole is matched with a stud on the stud-containing chute assembly 101 to realize the screwing fixing of the sliding block 103.
The size of the slider 103: 60mm (length) × 32mm (width) × 15mm (height), a waist-shaped hole 15mm (length) × 6mm (width) is arranged in the middle, the waist-shaped hole can pass through a stud (M5) of the sliding groove component 101 with the stud, edges of 5mm (width) × 3mm (thickness) are arranged at the bottoms of two sides of the sliding block 103 in the width direction, and the waist-shaped hole can move for 0-15 mm in a sliding groove formed by the 'L' -shaped strip.
The materials of the sliding groove component 101 with the stud, the tightening nut 102, the sliding block 103, the L-shaped bar, the M5 bolt, the M5 stud and other components are hot-rolled (forged) bar materials 1J50 soft magnetic alloy GB/T32286.1-2015, the coercive force is 14.4A/M, and the coercive force is far smaller than the pole head coercive force required by the national standard (GB/T3217-2013 requires that the pole head coercive force is not more than 100A/M).
As a further improvement, the double-yoke magnetic circuit tool coil 2 includes two helmholtz coil winding packages 201 connected with the sliding groove assembly 101 with the stud, and a double-yoke magnetic circuit tool 202 connected with the two helmholtz coil winding packages 201, and the double-yoke magnetic circuit tool 202 is installed at the bottom of the case 7 in an insulating manner.
Each coil of the Helmholtz coil winding package 201 is formed by tightly winding 750 circles of high-strength enameled wires with the diameter of 0.5mm on an insulating framework, and meanwhile, the sliding groove assembly 101 with the stud is installed at the top of the insulating framework.
The outer layer is wrapped with two layers of insulating tape paper and tied up with cotton thread. The insulating framework is made of electrical insulating plywood with the thickness of 3mm, the two end faces are 70mm multiplied by 70mm, the height is 55mm, and the middle section square hole is 30mm multiplied by 25 mm. In order to reduce eddy current generated by rapid change of magnetic flux, an iron core and a base magnetic yoke are added in the middle of an insulating framework wrapped on a line, the iron cores at two ends and the base magnetic yoke are designed into a double-yoke magnetic circuit tool 202, the double-yoke magnetic circuit tool 202 is formed by processing common silicon steel sheets into U-shaped superposition, the thickness of the silicon steel sheets is 0.5mm, the distance between inner end faces between two legs of the U-shaped tool is 85mm, the width of each leg is 25mm, the height of each leg is 75mm (equal to the height of a sliding groove assembly which is 20mm plus the height of the insulating framework wrapped on the line which is 55mm), the thickness of each leg is 30mm (60 sheets are superposed), the height of the bottom of the U-shaped tool is 25mm, and the iron cores and the base of a case 7 are fixedly installed by insulating tape paper.
The magnetic tube resistor 3 is R in the code number in FIG. 3, and is 12X20-150 in the model number; the device is high in power and adjustable, in the process of developing and debugging the device, the device is adjusted and solidified according to the size and stability of a direct current magnetic field required by magnetizing of a small circular ring type magnetic system, and is matched with the direct current ammeter 11 to monitor the excitation current in real time.
The regulating transformer 4 has a code number of B1 in FIG. 3 and a model number of TDGC 2-0.5; the magnetic field control device has the functions of adjusting the amplitude of alternating voltage to be continuously attenuated to zero from large to small, generating an alternating magnetic field by matching with a double-yoke magnetic circuit tool coil and demagnetizing a small circular ring type magnetic system. The key points are as follows: the magnetic field amplitude at the beginning must be enough to overcome the intrinsic coercivity of the small-sized circular ring type magnetic system, so the peak value of the first half-wave magnetic field must be 3-5 times of the intrinsic coercivity of the small-sized circular ring type magnetic system.
The power indicator lamp 5 has the code ZD in the figure 3 and the model DN 6-5; the device is used for indicating when a 220V and 50Hz power supply is switched on, and when the device is switched on, the red light is turned on, and the off light is turned off.
The alternating current ammeter 6 has the code number of AC in figure 3, the measuring range of 2A and the model of 44L 1-A; when the device is used for demagnetizing the small-sized circular ring type magnetic system, the size of alternating current is indicated.
The case 7 is 380mm (length) x 280mm (width) x 240mm (height) and is used for placing and installing electrical components.
The button switch 8 has the code number K3 and the model number LA19-11A in figure 3; the contact is oxidation resistant and arc-resistant, and is used for switching on or off the power supply of the second relay 14.
The square button switch 9 has the code number K1 and the model number KD2 in figure 3; used for switching on and off 220V, 50Hz power supply.
The code of the toggle switch 10 in FIG. 3 is K2 and the model is KN 3-2; if the switch is a magnetizing or demagnetizing function selection switch and is dialed to 'magnetizing' leftward, the device is connected with a magnetizing line power supply; when the device is pulled to demagnetization right, the device is connected with a demagnetization line power supply.
The direct current ammeter 11 has a code DC in figure 3, a measuring range of 5A and a model of 44C 2-A; the magnetic tube current monitoring device is used for monitoring the excitation current in real time in cooperation with the magnetic tube resistor 3.
The thyristor full-bridge rectifier circuit 12, denoted by the reference numeral Q in fig. 3, is configured to configure a power supply transformer and a high-frequency high-voltage thyristor rectifier diode to form a full-bridge rectifier circuit, output a stable dc power supply as a dc magnetic field signal source, and then drive the double-yoke magnetic circuit tool coil 2 to generate a stable target magnetic field.
The first relay 13 has the code number of J1 in FIG. 3 and the model number of JQX-10F; when the button switch 10 is turned to demagnetization right, the coil on the first relay 13 is electrified to attract the contact, so that the device is connected with a demagnetization circuit and has the functions of overload protection and overtemperature protection.
The second relay 14 has the code number of J2 in FIG. 3 and the model number of JQX-38F; when the button switch 10 is shifted to 'magnetizing' leftwards, and the button switch 8 is pressed, the coil on the second relay 14 is electrified to attract the contact, so that the device is connected with a magnetizing circuit, and has the functions of overload and overtemperature protection.
Related matching parts (power lines, fuses, sockets and the like) can be well connected with the magnetizing and demagnetizing device, and a safe 220V and 50Hz working power supply is provided for the magnetizing and demagnetizing device.
A use method of a magnetizing and demagnetizing device applied to a small circular ring type magnetic system comprises the following steps:
(A) the tested small-sized circular ring type magnetic system is placed in the working window 1, and after the tested small-sized circular ring type magnetic system is clamped by the movable sliding block 103, the nut 102 is screwed and fastened in a rotating mode.
When installing the tested small ring type magnet system, it should be noted that the N, S pole on the magnetized magnet is installed in the opposite direction of the N, S pole on the working window 1.
(B) The power supply is connected, the square button switch 9 is closed, the power indicator lamp 5 is on, the button switch 10 is toggled, and the magnetizing is selected.
(C) After the button switch 10 is switched to 'magnetizing', the power supply voltage passes through the silicon controlled full-bridge rectifying circuit 12 to output a stable direct current power supply as a direct current magnetic field signal source.
(D) And when the magnetizing button switch 8 is started, the second relay 14 works, and the normally open contact of the second relay 14 is closed.
(E) And supplying direct current voltage to the double-yoke magnetic circuit tool coil 2, generating a direct current magnetic field to act on the working window 1, and magnetizing the small-sized circular ring magnetic system to be tested for 1-2 seconds.
When the small toroidal magnetic system to be tested is magnetized, the magnitude of the current displayed on the dc current meter 11 is observed, and should normally be less than 5A.
(F) After magnetizing, the magnetic field intensity is detected by an HT201 portable digital teslameter.
A use method of a magnetizing and demagnetizing device for a small-sized circular ring-shaped magnetic system comprises a demagnetizing method, and specifically comprises the following steps:
(a) the tested small-sized circular ring type magnetic system is placed in the working window 1, and after the tested small-sized circular ring type magnetic system is clamped by the movable sliding block 103, the nut 102 is screwed and fastened in a rotating mode.
Specifically, when installing the tested small-sized circular ring type magnetic system, the N, S pole on the magnetized magnet is opposite to the N, S pole on the working window 1.
(b) After the power supply is connected, the square button switch 9 is closed, the power indicator lamp 5 is on, the button switch 10 is turned, and demagnetization is selected.
(c) The button switch 10 is dialed to demagnetization, then the first relay 13 works, and the normally open contact of the first relay 13 is closed.
(d) And the power supply voltage is supplied to the double-yoke magnetic circuit tool coil 2 through the output end of the regulating transformer 4 and generates an alternating magnetic field to act on the working window 1, so that the tested small-sized circular magnetic system is subjected to alternating magnetization.
(e) And slowly rotating the adjusting handle of the regulating transformer 4 clockwise, determining the number of the rotating grids according to the magnitude of the demagnetization quantity, and then, recovering the counterclockwise rotation of the adjusting handle of the regulating transformer 4 to a zero position to finish the demagnetization process.
The magnitude of the display current on the alternating current ammeter 6 is observed while the rotation grid number is determined, and should normally be less than 2A.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and what is described in the specification are the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are intended to fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a magnetization and demagnetization device to small-size ring type magnetic system which characterized in that: comprises a case (7), a working window (1) for clamping and fixing a tested small-sized circular magnetic system, a double-yoke magnetic circuit tool coil (2) in insulation connection with the working window (1), a magnetic tube resistor (3), a regulating transformer (4) which is matched with the double-yoke magnetic circuit tool coil (2) to generate an alternating magnetic field, and an alternating current meter (6) for indicating the alternating current when the small-sized circular magnetic system is demagnetized, the device comprises a button switch (10) for selecting magnetization and demagnetization, a direct current ammeter (11) for monitoring exciting current in real time in cooperation with a magnetic tube resistor (3), a silicon controlled full-bridge rectification circuit (12) for driving a double-yoke magnetic circuit tool coil (2) to generate a stable target magnetic field as a direct current magnetic field signal source, a first relay (13) for switching on a demagnetization circuit, and a second relay (14) for switching on the magnetization circuit;
the working window (1), the double-yoke magnetic circuit tool coil (2), the magnetic tube resistor (3), the voltage regulating transformer (4), the alternating current ammeter (6), the button switch (10), the direct current ammeter (11), the silicon controlled full-bridge rectifying circuit (12), the first relay (13) and the second relay (14) are correspondingly arranged in the case (7).
2. The magnetizing and demagnetizing device for a small-sized toroidal magnetic system according to claim 1, wherein: the case (7) is also provided with a power indicator lamp (5) for indicating the power state, a button switch (8) for controlling the second relay (14) to be switched on or off, and a square button switch (9) for switching on or off the power.
3. The magnetizing and demagnetizing device for a small-sized toroidal magnetic system according to claim 1, wherein: the working window (1) comprises a sliding chute assembly (101) with a stud, sliding blocks (103) symmetrically distributed on the sliding chute assembly (101) with the stud and tightening nuts (102) arranged on the sliding blocks (103) and installed on the stud, and the sliding chute assembly (101) with the stud is in insulation connection with the double-yoke magnetic circuit tooling coil (2).
4. The magnetizing and demagnetizing device for a small toroidal magnetic system according to claim 3, wherein: the double-yoke magnetic circuit tool coil (2) comprises two Helmholtz coil winding packages (201) in insulation connection with the sliding groove assembly (101) with the stud and a double-yoke magnetic circuit tool (202) connected with the two Helmholtz coil winding packages (201), and the double-yoke magnetic circuit tool (202) is installed at the bottom in the case (7) in an insulation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022768084.7U CN213877718U (en) | 2020-11-25 | 2020-11-25 | Magnetizing and demagnetizing device for small circular ring type magnetic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022768084.7U CN213877718U (en) | 2020-11-25 | 2020-11-25 | Magnetizing and demagnetizing device for small circular ring type magnetic system |
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| Publication Number | Publication Date |
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| CN213877718U true CN213877718U (en) | 2021-08-03 |
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| CN202022768084.7U Active CN213877718U (en) | 2020-11-25 | 2020-11-25 | Magnetizing and demagnetizing device for small circular ring type magnetic system |
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| CN (1) | CN213877718U (en) |
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