CN108918143B - Device and method for measuring mechanical characteristics of composite magnetic coupler - Google Patents
Device and method for measuring mechanical characteristics of composite magnetic coupler Download PDFInfo
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- CN108918143B CN108918143B CN201811134004.3A CN201811134004A CN108918143B CN 108918143 B CN108918143 B CN 108918143B CN 201811134004 A CN201811134004 A CN 201811134004A CN 108918143 B CN108918143 B CN 108918143B
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- 239000002131 composite material Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 238000001816 cooling Methods 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 33
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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Abstract
The invention discloses a device and a method for measuring mechanical characteristics of a composite magnetic coupler, wherein the device comprises a circulating water pump, the composite magnetic coupler, a frequency converter I, a first lead, a sensor power supply I, a second lead, an infrared temperature sensor, a throttle valve I, a third lead, a temperature display instrument, a water tank, a computer, a data acquisition card, a fourth lead, a frequency converter II, a load motor, a torque sensor II, a sensor power supply II, a base, a water inlet pipe, a throttle valve II, a water outlet pipe, a torque sensor I, a driving motor, a cooling system, a fifth lead, a sixth lead, a seventh lead, an eighth lead, a ninth lead and a tenth lead; the measuring device provided by the invention can accurately measure the mechanical characteristics of the composite magnetic coupler under the actions of constant temperature, different magnetic fields and different loads, meets the use requirements under different working conditions, and provides a guarantee for the development of high-performance composite magnetic coupler products.
Description
Technical Field
The invention discloses a device for measuring mechanical characteristics, in particular to a device and a method for measuring mechanical characteristics of a composite magnetic coupler, and belongs to the technical field of mechanical application.
Background
The magnetic coupler is a non-contact power transmission device and is widely applied to industries such as petroleum, chemical industry, metallurgy, coal and the like. The composite magnetic coupler overcomes the defects of the existing magnetic coupler, has the advantages of high transmission efficiency, energy conservation, environmental protection, no medium leakage, soft start and the like, and has wide application prospect.
However, the mechanical characteristic measurement process of the composite magnetic coupler is complex and takes a long time, so an apparatus and a method for measuring the mechanical characteristic of the composite magnetic coupler are provided for solving the above problems.
Disclosure of Invention
The invention aims at providing a device and a method for measuring mechanical characteristics of a composite magnetic coupler, and solves the problem that the mechanical characteristics of the conventional composite magnetic coupler are inconvenient to measure.
The invention adopts the following scheme for realizing the purposes:
The method for measuring the mechanical characteristic device of the composite magnetic coupler comprises a circulating water pump, the composite magnetic coupler, a frequency converter, a first wire, a first sensor power supply, an infrared temperature sensor, a second wire, a throttle valve I, a third wire, a temperature display instrument, a water tank, a computer, a data acquisition card, a fourth wire, a frequency converter II, a load motor, a torque sensor II, a sensor power supply II, a base, a water inlet pipe, a throttle valve II, a water outlet pipe, a torque sensor I, a driving motor, a cooling system, an eighth wire, a sixth wire, a seventh wire, a fifth wire, a ninth wire and a tenth wire; wherein,
A cooling system is arranged in the circulating water pump, one end of the circulating water pump is connected with a water tank through a water inlet pipe, and the other end of the water tank is connected with the circulating water pump through a water outlet pipe; the water inlet pipe is provided with a first throttle valve, and the water outlet pipe is provided with a second throttle valve; one end of the composite magnetic coupler is connected with a first torque sensor, and one end of the first torque sensor is connected with a driving motor; the other end of the composite magnetic coupler is connected with a second torque sensor, and one end of the second torque sensor is connected with a load motor;
An infrared temperature sensor is arranged on one side of the first torque sensor, and the infrared temperature sensor is connected with the first sensor power supply through a third wire; the infrared temperature sensor is connected with the temperature display instrument through a second wire, and the temperature display instrument is connected with the computer through a fifth wire; one end of the torque sensor is connected with the data acquisition card through a ninth wire, and the other end of the torque sensor I is connected with a sensor power supply II through a tenth wire; the data acquisition card is connected with the computer through an eighth lead; the data acquisition card is connected with a second torque sensor through a seventh wire, and the second torque sensor is connected with a second sensor power supply through a sixth wire; the load motor is connected with the frequency converter II through a fourth wire; the driving motor is connected with the first frequency converter through a first wire;
When the slip ratio of the composite magnetic coupler is measured, the using method comprises the following steps:
the method comprises the steps that firstly, a computer presets a maximum temperature Cmax according to a related program, a load motor is started, the load motor reaches a stable operation stage, and the rotating speed of the load motor is set to be constant VDC through a frequency converter II;
secondly, opening the circulating water pump and the cooling system to enable the circulating water pump cooling system to work;
step three, gradually starting a driving motor through a frequency converter I, controlling the torque of the driving motor to increase in a step length of 2N.M according to the frequency fi of the frequency converter I, generating a series of input torques, driving a composite magnetic coupler to rotate through a torque sensor, and measuring a series of input rotating speeds n0i of the composite magnetic coupler through the torque sensor I;
Measuring a series of output rotating speeds n1i and output torque TNi of the compound magnetic coupler through a second torque sensor;
Fifthly, adjusting the frequency of the first frequency converter to ensure that the torque of the driving motor is not increased, wherein the torque is recorded as Tmax, and the output rotating speed n1max and the output torque TNmax of the corresponding composite magnetic coupler are measured and generated in the second torque sensor;
And sixthly, drawing a graph curve with TNi as an X axis and (n 1i-n0 i) as a Y axis to obtain a mechanical characteristic curve of the composite magnetic coupler under the conditions that the highest temperature environment is Cmax, the permanent magnet pole pairs of the axial rotor I and the axial rotor II are five, and the permanent magnet pole pair of the radial copper ring is five.
Preferably, a driving motor and a load motor are mounted on the hollow rectangular base through bolts, a water tank is arranged on the base between the driving motor and the load motor, and a composite magnetic coupler is mounted in the water tank; the output end of the driving motor is connected with the input shaft of the composite magnetic coupler, and a torque sensor I is arranged between the driving motor and the composite magnetic coupler; and the output shaft of the composite magnetic coupler is connected with the shaft of the load motor, a torque sensor II is arranged between the load motor and the composite magnetic coupler, and when the driving motor sequentially transmits power to the composite magnetic coupler, the torque sensor and the load motor, the vibration of the driving motor, the torque sensor and the load motor can be reduced under a high-power working condition due to the vibration reduction principle of the composite magnetic coupler and the vibration absorption principle of the base.
Preferably, the composite magnetic coupler is composed of an input shaft, a connecting piece, a left end cover, a first copper disk, a first axial rotor, a radial copper ring, an outer shell, a second copper disk, a right end cover, a second bearing, an output shaft, a second radial permanent magnet, a second axial rotor, an axial permanent magnet, a radial rotor, a first radial permanent magnet, a ventilation groove and a first bearing, wherein the two ends of the outer shell of the hollow cylinder are connected with the left end cover and the right end cover through screws, the connecting piece is arranged at the center of the left end cover, and the input shaft is arranged at the center of the connecting piece; an output shaft is arranged at one end of the input shaft, and a first bearing is arranged between the input shaft and the left end cover; a first copper plate is arranged on the inner side of the left end cover; a second bearing is arranged between the output shaft and the right end cover; a second copper plate is arranged on the inner side of the right end cover; an axial rotor I, a radial rotor and an axial rotor II are sequentially arranged on the shaft between the input shaft and the output shaft from left to right, a radial permanent magnet I is arranged on the axial rotor I, an axial permanent magnet is arranged on the radial rotor, and a radial permanent magnet II is arranged on the axial rotor II; twelve rectangular ventilation grooves are formed in the outer shell along the circumferential direction; a radial copper ring is arranged on the inner side of the outer shell; immersing a part of the structure of the composite magnetic coupler in a water tank; the water in the water tank is sent back to the circulating water pump through the water outlet pipe and the throttle valve II, and the cooling system is utilized to cool the water in the continuous circulating water pump all the time; the axial rotor I, the axial rotor II and the radial copper ring of the composite magnetic coupler cut magnetic induction lines, and the surface temperatures of the axial rotor I, the axial rotor II and the radial copper ring are increased due to the eddy current effect, so that the composite magnetic coupler is not beneficial to transmitting power; under the condition of the circulating water pump and the cooling system, the water inlet always inputs low-temperature water into the water tank, and due to the thermodynamic principle, the heat of the axial rotor I, the axial rotor II and the radial copper ring of the composite magnetic coupler is taken away, so that the temperature of the axial rotor I, the axial rotor II and the radial copper ring of the novel composite magnetic coupler can be reduced under the high-temperature working environment.
Preferably, the shaft of the driving motor, the shaft of the composite magnetic coupler and the shaft of the load motor are positioned on the same straight line.
The beneficial effects of the invention are as follows: the invention can accurately measure the mechanical characteristics of the composite magnetic coupler under the actions of constant temperature, different magnetic fields and different loads, meets the use requirements under different working conditions, and provides a guarantee for the development of high-performance composite magnetic coupler products.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the device for measuring mechanical characteristics of a composite magnetic coupler according to the present invention.
Fig. 2 is a schematic diagram of the overall structure of the composite magnetic coupler to be measured according to the present invention.
Fig. 3 is a schematic cross-sectional view of a composite magnetic coupler to be measured according to the present invention.
Fig. 4 is a schematic diagram of a measurement composite magnetic coupler installation structure according to the present invention.
In the figure: 1. a circulating water pump; 2. a water inlet pipe; 3. a first frequency converter; 4. a first wire; 5. a first sensor power supply; 6. an infrared temperature sensor; 7. a second wire; 8. a throttle valve I; 9. a third wire; 10. a temperature display; 11. a water tank; 12. a computer; 13. a data acquisition card; 14. a fourth wire; 15. a frequency converter II; 16. a load motor; 17. a torque sensor II; 18. a second sensor power supply; 19. a base; 20. a composite magnetic coupler; 201. an input shaft; 202. a connecting piece; 203. a left side end cap; 204. a first copper plate; 205. an axial rotor I; 206. a radial copper ring; 207. an outer housing; 208. a copper plate II; 209. a right side end cap; 210. a second bearing; 211. an output shaft; 212. a radial permanent magnet II; 213. an axial rotor II; 214. an axial permanent magnet; 215. a radial rotor; 216. a radial permanent magnet I; 217. a ventilation groove; 218. a first bearing; 21. a throttle valve II; 22. a water outlet pipe; 23. a torque sensor I; 24. a driving motor; 25. a cooling system; 26. an eighth wire; 27. a sixth wire; 28. a seventh wire; 29. a fifth wire; 30. a ninth wire; 31. and a tenth wire.
Detailed Description
Referring to fig. 1-4, a device for measuring mechanical characteristics of a composite magnetic coupler includes a circulating water pump 1, a composite magnetic coupler 2, a frequency converter 3, a first wire 4, a first sensor power supply 5, an infrared temperature sensor 6, a second wire 7, a throttle valve 8, a third wire 9, a temperature display 10, a water tank 11, a computer 12, a data acquisition card 13, a fourth wire 14, a frequency converter 15, a load motor 16, a torque sensor 17, a second sensor power supply 18, a base 19, a water inlet pipe 20, a throttle valve 21, a water outlet pipe 22, a torque sensor 23, a driving motor 24, a cooling system 25, an eighth wire 26, a sixth wire 27, a seventh wire 28, a fifth wire 29, a ninth wire 30 and a tenth wire 31; wherein,
A cooling system 25 is arranged in the circulating water pump 1, one end of the circulating water pump 1 is connected with a water tank 11 through a water inlet pipe 2, and the other end of the water tank 11 is connected with the circulating water pump 1 through a water outlet pipe 22; the water inlet pipe 2 is provided with a throttle valve I8, and the water outlet pipe 22 is provided with a throttle valve II 21; one end of the composite magnetic coupler 20 is connected with a first torque sensor 23, and one end of the first torque sensor 23 is connected with a driving motor 24; the other end of the composite magnetic coupler 20 is connected with a second torque sensor 17, and one end of the second torque sensor 17 is connected with a load motor 16;
An infrared temperature sensor 6 is arranged on one side of the first torque sensor 23, and the infrared temperature sensor 6 is connected with a first sensor power supply 5 through a third lead 9; the infrared temperature sensor 6 is connected with the temperature display instrument 10 through a second wire 7, and the temperature display instrument 10 is connected with the computer 12 through a fifth wire 25; one end of the first torque sensor 23 is connected with the data acquisition card 13 through a ninth wire 30, and the other end of the first torque sensor 23 is connected with the second sensor power supply 18 through a tenth wire 31; the data acquisition card 13 is connected with the computer 12 through an eighth wire 26; the data acquisition card 13 is connected with a second torque sensor 17 through a seventh wire 28, and the second torque sensor 17 is connected with a second sensor power supply 18 through a sixth wire 27; the load motor 16 is connected with the frequency converter II 15 through the fourth wire 14; the driving motor 24 is connected with the frequency converter I3 through a first lead 4.
Specifically, a driving motor 24 and a load motor 16 are mounted on the hollow rectangular base 19 through bolts, a water tank 11 is arranged on the base 19 between the driving motor 24 and the load motor 16, and a composite magnetic coupler 20 is mounted in the water tank 11; the output end of the driving motor 24 is connected with the input shaft 201 of the composite magnetic coupler 20, and a torque sensor I23 is arranged between the driving motor 24 and the composite magnetic coupler 20; and the output shaft 211 of the composite magnetic coupler 20 is connected to the shaft of the load motor 16, and a torque sensor II 17 is installed between the load motor 16 and the composite magnetic coupler 20.
Specifically, the composite magnetic coupler 20 is composed of an input shaft 201, a connecting piece 202, a left end cover 203, a first copper disk 204, a first axial rotor 205, a radial copper ring 206, an outer shell 207, a second copper disk 208, a right end cover 209, a second bearing 210, an output shaft 211, a second radial permanent magnet 212, a second axial rotor 213, an axial permanent magnet 214, a radial rotor 215, a first radial permanent magnet 216, a ventilation slot 217 and a first bearing 218, wherein two ends of the outer shell 207 of the hollow cylinder are connected with the left end cover 203 and the right end cover 209 through screws, the connecting piece 202 is installed at the center of the left end cover 203, and the input shaft 201 is installed at the center of the connecting piece 202; an output shaft 211 is arranged at one end of the input shaft 201, and a first bearing 218 is arranged between the input shaft 201 and the left end cover 203; a first copper plate 204 is arranged on the inner side of the left end cover 203; a second bearing 210 is installed between the output shaft 211 and the right end cover 209; a second copper plate 208 is arranged on the inner side of the right end cover 209; an axial first rotor 205, a radial rotor 215 and an axial second rotor 213 are sequentially arranged on the shaft between the input shaft 201 and the output shaft 211 from left to right, a radial permanent magnet 216 is arranged on the axial first rotor 205, an axial permanent magnet 214 is arranged on the radial rotor 215, and a radial permanent magnet 212 is arranged on the axial second rotor 213; twelve rectangular ventilation slots 217 are formed in the outer housing 207 along the circumferential direction; the inner side of the outer housing 207 is fitted with a radial copper ring 206.
Specifically, the axis of the driving motor 24 is aligned with the axis of the hybrid magnetic coupling 20 and the axis of the load motor 16.
A method for measuring a mechanical characteristic device of a composite magnetic coupler, when measuring the slip ratio of the composite magnetic coupler, the using method comprises the following steps:
The first step, the computer 12 presets a maximum value Cmax of temperature according to a related program, and starts the load motor 16, so that the load motor 16 reaches a stable operation stage, and the rotating speed of the load motor 16 is set to be constant VDC through the frequency converter II 15;
secondly, opening the circulating water pump 1 and the cooling system 25 to enable the circulating water pump cooling system to work;
Step three, gradually starting a driving motor 24 through a frequency converter I3, controlling the torque of the driving motor 24 to increase in a step length of 2N.M according to the frequency fi of the frequency converter I3, generating a series of input torques, driving the composite magnetic coupler 2 to rotate through a torque sensor I23, and measuring a series of input rotational speeds n0i of the composite magnetic coupler 2 through the torque sensor I23;
Measuring a series of output rotating speeds n1i and output torques TNi of the compound magnetic coupler 2 through a second torque sensor 17;
fifthly, adjusting the frequency of the frequency converter I3 to ensure that the torque of the driving motor 24 is not increased, wherein the torque is denoted as Tmax, and the output rotating speed n1max and the output torque TNmax of the corresponding composite magnetic coupler 2 generated by the torque sensor II 17 are measured;
Sixth, by drawing a graph curve with TNi as the X axis and (n 1i-n0 i) as the Y axis, the mechanical characteristic curve of the composite magnetic coupler 2 under the condition that the highest temperature environment is Cmax, the permanent magnet pole pairs of the axial rotor I205 and the axial rotor II 213 are five, and the permanent magnet pole pair of the radial copper ring 206 is five can be obtained.
When the invention is used, the number of the pole pairs of the permanent magnet on the first axial rotor 205 is five, the number of permanent magnet pole pairs of 213 on the second axial rotor is five, and the number of permanent magnet pole pairs of 206 on the radial copper ring is five; the driving motor 24 is fixed on the base 19 through bolts; the first torque sensor 23 and the second torque sensor 17 are fixed on the base 19 through bolts, and the first torque sensor 23 is connected with the driving motor 24 and the composite magnetic coupler 20 and is responsible for detecting the input rotation speed n0i of the composite magnetic coupler 20; the second torque sensor 17 is connected with the composite magnetic coupler 20 and the load motor 16 and is responsible for detecting the output rotating speed n1 and the output torque TNi of the composite magnetic coupler 20; the load motor 16 is fixed on the base 19 through bolts; the base 19 is made of gray cast iron; when the driving motor 24 sequentially transmits power to the first torque sensor 23, the composite magnetic coupler 20, the second torque sensor 17 and the load motor 16, the vibration of the driving motor 24, the first torque sensor 23, the second torque sensor 17 and the load motor 16 can be reduced under the high-power working condition due to the vibration reduction principle of the composite magnetic coupler 20 and the vibration absorption principle of the base 19;
The circulating water pump 1 is internally provided with a cooling system 25, and the circulating water pump 1 is connected with the water tank 11 through a water outlet pipe 22 and a water inlet pipe 2; the water inlet pipe 2 is fixed with a throttle valve I8, and the water outlet pipe 22 is fixed with a throttle valve II 21; the cooling system 25 reduces the water temperature in the circulating water pump 1, and sends low-temperature water into the water tank 11 through the water inlet pipe 22 and the throttle valve I8; the outer shell 207 of the composite magnetic coupler 20 is provided with 12 ventilation slots 217, so that part of the structure of the composite magnetic coupler 20 is immersed in the water tank 11; the water in the water tank 11 is sent back to the circulating water pump 1 through the water outlet pipe 22 and the throttle valve II 21, and the cooling system 25 is utilized to cool the water in the circulating water pump 1 continuously all the time; the axial first rotor 205, the axial second rotor 213 and the radial copper ring 206 of the composite magnetic coupler 20 cut magnetic induction lines, and the surface temperatures of the axial first rotor 205, the axial second rotor 213 and the radial copper ring 206 are increased due to the eddy effect, so that the composite magnetic coupler 20 is not beneficial to transmitting power; under the circulating water pump 1 and the cooling system 25, the water inlet pipe 2 always inputs low-temperature water into the water tank 11, and due to the thermodynamic principle, the heat of the first axial rotor 205, the second axial rotor 213 and the radial copper ring 206 of the composite magnetic coupler 2 is taken away, so that the temperatures of the first axial rotor 205, the second axial rotor 213 and the radial copper ring 206 of the composite magnetic coupler 20 can be reduced under a high-temperature working environment;
The first frequency converter 3 is connected with the driving motor 24 through a first lead 4 and is responsible for adjusting the rotating speed of the driving motor 24; the first sensor power supply 5 is connected with the infrared temperature sensor 6 through a third lead 9 and is responsible for providing power for the infrared temperature sensor 6; the infrared temperature sensor 6 is fixed on the base 19 through a screw and is responsible for measuring the temperature of the composite magnetic coupler 20; the temperature display instrument 10 is connected with the infrared temperature sensor 6 through a second lead 7 and is responsible for displaying the real-time temperature of the composite magnetic coupler 2; the temperature display 10 is connected to the computer 12 through a fifth wire 29, and transmits temperature data to the computer 12, and the computer 12 presets a maximum value of the temperature through a related program and judges the temperature data: if the temperature is higher than the preset maximum temperature value, a command is sent to accelerate the water flow rate in the circulating water pump 1, and the water flow rate for taking away the heat of the composite magnetic coupler 20 is increased; the data acquisition card 13 is connected with the second torque sensor 17 through a seventh lead 28 and is responsible for acquiring a rotating speed signal of the second torque sensor 17; the data acquisition card 13 is connected with the first torque sensor 23 through a ninth lead 30 and is responsible for acquiring a torque signal of the first torque sensor 23; the data acquisition card 13 is connected with the computer 12 through an eighth lead 26 and is responsible for transmitting the rotating speed and torque signals of the second torque sensor 17 and the rotating speed signals of the first torque sensor 23 to the computer 12;
the second sensor power supply 18 is connected with the first torque sensor 23 through a seventh wire 28, and the second sensor power supply 18 is connected with the first torque sensor 23 through a tenth wire 31 and is responsible for providing power for the first torque sensor 23 and the second torque sensor 17.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. A method for measuring a mechanical characteristic device of a composite magnetic coupler, wherein the mechanical characteristic device of the composite magnetic coupler comprises a circulating water pump (1), the composite magnetic coupler (2), a frequency converter (3), a first lead (4), a first sensor power supply (5), an infrared temperature sensor (6), a second lead (7), a first throttle valve (8), a third lead (9), a temperature display (10), a water tank (11), a computer (12), a data acquisition card (13), a fourth lead (14), a second frequency converter (15), a load motor (16), a second torque sensor (17), a second sensor power supply (18), a base (19), a water inlet pipe (20), a second throttle valve (21), a water outlet pipe (22), a first torque sensor (23), a driving motor (24), a cooling system (25), an eighth lead (26), a sixth lead (27), a seventh lead (28), a fifth lead (29), a ninth lead (30) and a tenth lead (31); wherein,
A cooling system (25) is arranged in the circulating water pump (1), one end of the circulating water pump (1) is connected with a water tank (11) through a water inlet pipe (2), and the other end of the water tank (11) is connected with the circulating water pump (1) through a water outlet pipe (22); a throttle valve I (8) is arranged on the water inlet pipe (2), and a throttle valve II (21) is arranged on the water outlet pipe (22); one end of the composite magnetic coupler (20) is connected with a first torque sensor (23), and one end of the first torque sensor (23) is connected with a driving motor (24); the other end of the composite magnetic coupler (20) is connected with a second torque sensor (17), and one end of the second torque sensor (17) is connected with a load motor (16);
An infrared temperature sensor (6) is arranged on one side of the first torque sensor (23), and the infrared temperature sensor (6) is connected with a first sensor power supply (5) through a third lead (9); the infrared temperature sensor (6) is connected with the temperature display instrument (10) through a second wire (7), and the temperature display instrument (10) is connected with the computer (12) through a fifth wire (25); one end of the first torque sensor (23) is connected with the data acquisition card (13) through a ninth lead (30), and the other end of the first torque sensor (23) is connected with the second sensor power supply (18) through a tenth lead (31); the data acquisition card (13) is connected with the computer (12) through an eighth lead (26); the data acquisition card (13) is connected with a second torque sensor (17) through a seventh lead (28), and the second torque sensor (17) is connected with a second sensor power supply (18) through a sixth lead (27); the load motor (16) is connected with a frequency converter II (15) through a fourth wire (14); the driving motor (24) is connected with the first frequency converter (3) through a first lead (4), and is characterized in that: when the slip ratio of the composite magnetic coupler is measured, the using method comprises the following steps:
Firstly, a computer (12) presets a maximum value Cmax of temperature according to a related program, and starts a load motor (16) to enable the load motor (16) to reach a stable operation stage, and the rotating speed of the load motor (16) is set to be constant as VDC through a frequency converter II (15);
secondly, opening the circulating water pump (1) and the cooling system (25) to enable the circulating water pump cooling system to work;
Step three, gradually starting a driving motor (24) through a frequency converter I (3), controlling the torque of the driving motor (24) to increase in a step length of 2N.M according to the frequency fi of the frequency converter I (3), generating a series of input torques, driving a composite magnetic coupler (2) to rotate through a torque sensor I (23), and measuring a series of input speeds n0i of the composite magnetic coupler (2) through the torque sensor I (23);
Measuring a series of output rotating speeds n1i and output torques TNi of the compound magnetic coupler (2) through a torque sensor II (17);
Fifthly, adjusting the frequency of the frequency converter I (3) to ensure that the torque of the driving motor (24) is not increased, wherein the torque is recorded as Tmax, and the output rotating speed n1max and the output torque TNmax of the corresponding compound magnetic coupling (2) are measured in the torque sensor II (17);
And sixthly, drawing a graph curve with TNi as an X axis and (n 1i-n0 i) as a Y axis to obtain a mechanical characteristic curve of the composite magnetic coupler (2) under the condition that the highest temperature environment is Cmax, the permanent magnet pole pairs of the axial rotor I (205) and the axial rotor II (213) are five, and the permanent magnet pole pairs of the radial copper ring (206) are five.
2. A method of measuring a mechanical property of a composite magnetic coupler as claimed in claim 1, wherein: a driving motor (24) and a load motor (16) are mounted on the hollow rectangular base (19) through bolts, a water tank (11) is arranged on the base (19) between the driving motor (24) and the load motor (16), and a composite magnetic coupler (20) is mounted in the water tank (11); the output end of the driving motor (24) is connected with the input shaft (201) of the composite magnetic coupler (20), and a torque sensor I (23) is arranged between the driving motor (24) and the composite magnetic coupler (20); and an output shaft (211) of the composite magnetic coupler (20) is connected with a shaft of a load motor (16), and a torque sensor II (17) is arranged between the load motor (16) and the composite magnetic coupler (20).
3. A method of measuring a mechanical property of a composite magnetic coupler as claimed in claim 1, wherein: the composite magnetic coupler (20) consists of an input shaft (201), a connecting piece (202), a left side end cover (203), a first copper disk (204), an axial first rotor (205), a radial copper ring (206), an outer shell (207), a second copper disk (208), a right side end cover (209), a second bearing (210), an output shaft (211), a second radial permanent magnet (212), a second axial rotor (213), an axial permanent magnet (214), a radial rotor (215), a first radial permanent magnet (216), a ventilation groove (217) and a first bearing (218), wherein the left side end cover (203) and the right side end cover (209) are connected to the two ends of the outer shell (207) of the hollow cylinder through screws, the connecting piece (202) is installed at the center of the left side end cover (203), and the input shaft (201) is installed at the center of the connecting piece (202); an output shaft (211) is arranged at one end of the input shaft (201), and a first bearing (218) is arranged between the input shaft (201) and the left end cover (203); a first copper plate (204) is arranged on the inner side of the left end cover (203); a second bearing (210) is arranged between the output shaft (211) and the right end cover (209); a copper plate II (208) is arranged on the inner side of the right end cover (209); an axial rotor I (205), a radial rotor (215) and an axial rotor II (213) are sequentially arranged on the shaft between the input shaft (201) and the output shaft (211) from left to right, a radial permanent magnet I (216) is arranged on the axial rotor I (205), an axial permanent magnet 214 is arranged on the radial rotor (215), and a radial permanent magnet II (212) is arranged on the axial rotor II (213); twelve rectangular ventilation grooves (217) are formed in the outer shell (207) along the circumferential direction; a radial copper ring (206) is mounted on the inner side of the outer shell (207).
4. A method of measuring a mechanical property of a composite magnetic coupler as claimed in claim 1, wherein: the axis of the driving motor (24) is positioned on the same straight line with the axis of the composite magnetic coupler (20) and the axis of the load motor (16).
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| CN110321602B (en) * | 2019-06-17 | 2020-12-11 | 大连理工大学 | Full-field temperature calculation method for mine magnetic coupler |
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