CN108768088A - A kind of combined-type magnetic mechanical couple temperature Precision Test System and its test method - Google Patents

Abstract

The present invention relates to a kind of combined-type magnetic mechanical couple temperature Precision Test System and its test methods, including computer, data line, variable-frequency motor, combined-type magnetic mechanical couple, load motor, radio temperature sensor, axial data acquisition card, radial data acquisition card, programmable current source, shaft coupling.The present invention is mounted on the surface of axial copper dish and radial copper ring using Miniature temperature wireless sensor, the live signal of radio temperature sensor is received using wireless temperature data card, in the case where ensureing that combined-type magnetic mechanical couple runs well, the temperature for realizing directly test copper conductor surface rises situation；Monitor the temperature of combined-type magnetic mechanical couple internal copper conductor in real time using radio temperature sensor and data acquisition card; and computer is fed back to by data acquisition card; using the alarm temperature of relative program initialization system; it prevents the permanent magnet inside combined-type magnetic mechanical couple when the temperature is excessively high from demagnetizing, realizes high temperature protection function.

Description

A compound magnetic coupler temperature precision testing system and testing method thereof

technical field

The invention relates to the technical field of magnetic transmission equipment, in particular to a composite magnetic coupler temperature precision testing system and a testing method thereof.

Background technique

As a device based on permanent magnet eddy current, the magnetic coupling is very important to analyze the temperature rise caused by the eddy current. The eddy current of the magnetic coupler has two meanings. On the one hand, the transmission of torque requires the eddy current in the copper disk to generate a magnetic field to couple with the permanent magnet, thereby generating torque; on the other hand, the power loss of the magnetic coupler is mainly generated by the eddy current. The form is released from the conductor copper disc, which reduces the transmission efficiency of the magnetic coupler. At the same time, the working performance of the permanent magnet will be limited by its Curie temperature. When it is close to or exceeds its Curie temperature, the magnetism of the permanent magnet will be greatly affected, and even permanent loss of magnetism will occur. This is very important for magnetic couplers. Very serious problem.

Magnetic couplers are divided into disc type, such as Chinese patent, application number 201621147813.4 and cylinder type, such as Chinese patent application number 201510153846.3. Since the structure of the above two magnetic couplers is open, an external infrared temperature sensor is generally used to monitor copper The temperature of the conductor disk, and the composite magnetic coupler, such as the Chinese patent application number ZL201610573976.7, is a closed structure, but it cannot use the traditional infrared temperature sensor to detect the actual temperature of the copper conductor. At the same time, due to its special closed structure, the temperature test The accuracy is low, and there is an urgent need for precise testing of its temperature rise.

Contents of the invention

The purpose of the present invention is to provide a composite magnetic coupler temperature precision testing system and its testing method, which can solve the problem that the external infrared temperature sensor cannot detect the temperature rise of the copper conductor inside the new composite magnetic coupler. The accuracy of temperature measurement is improved.

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: a composite magnetic coupler temperature precision testing system, including a computer, data lines, frequency conversion motors, composite magnetic couplers, load motors, wireless temperature sensors, axial Wireless data acquisition card, radial wireless data acquisition card, program-controlled current source and shaft coupling; wherein, the program-controlled current source is connected with axial wireless data acquisition card and radial wireless data acquisition card through data lines, and is an axial wireless data acquisition card. Data acquisition card and radial wireless data acquisition card provide power supply;

The composite magnetic coupler includes a composite magnetic coupler housing, an end cap I installed at one end of the composite magnetic coupler housing, and an end cap installed at the other end of the composite magnetic coupler housing and connected to the End cover 1, end cover 2 arranged in parallel, bearing 1 installed on the inner side of the axis of the end cover 1, bearing 2 installed on the inner side of the axis of the end cover 2 and corresponding to the bearing 1, installed through the The input shaft inside the first bearing, the output main shaft that is fixedly connected with the input shaft and installed inside the second bearing, is close to the inner side of the end cover one and is installed on the outer side of the first bearing. Copper plate 1. Axial copper plate 2 is installed close to the inner side of the end cover 2 and located outside the bearing 2. The outer wall of the output spindle is sequentially installed with shafts along the direction from the bearing 1 to the bearing 2. To the permanent magnet disk one, the radial permanent magnet disk and the axial permanent magnet disk two, permanent magnets distributed in a circular array are installed inside the axial permanent magnet disk one, and the axial permanent magnet disk one The outer side is set on the yoke plate 1; the inside of the axial permanent magnet plate 2 is installed with permanent magnets distributed in a circular array, and the outer side of the axial permanent magnet plate 2 is set on the yoke plate 2; the composite The middle part of the inner wall of the type magnetic coupler housing is provided with a radial copper ring corresponding to the radial permanent magnet disk;

The axial copper plate 1 is installed with eight groups at equal intervals along the circumference, and each group is provided with four axial wireless temperature sensors 1 in the radial direction, and the axial copper plate 2 is equipped with eight groups at equal intervals along the circumference. And each group of radial direction is provided with four axial wireless temperature sensors two; the inner edge of the radial copper ring is equipped with twelve radial wireless temperature sensors at equal intervals along the circumferential direction, and the radial wireless temperature sensors There are two groups; the radial wireless temperature sensor is used to directly monitor the temperature of the first axial copper disk, the second axial copper disk and the radial copper ring, and is used for real-time monitoring of the first axial copper disk and the second axial copper disk and the temperature of the radial copper ring;

The first axial permanent magnet disk and the second axial permanent magnet disk are provided with eight groove-shaped through holes, and the permanent magnets are installed in the groove-shaped through holes; the inside of the radial permanent magnet disk is equally spaced along the circumferential direction There are ten dovetail slots, and the permanent magnets are installed in the dovetail slots; the radial permanent magnet disk is fixed on the third shoulder of the output main shaft through flat keys;

The output spindle includes a first shoulder, a second shoulder, a third shoulder, a fourth shoulder, a fifth shoulder, and a sixth shoulder; the first shoulder is installed in the inner hole of bearing one; The second shoulder fixes the axial permanent magnet disk 1 through the flat key 1; the third shoulder fixes the radial permanent magnet disk through the flat key 2; the fourth shoulder fixes the axial permanent magnet through the flat key 3 disc two; the fifth shoulder is fixed in the inner hole of bearing two; the sixth shoulder is connected with the load motor through coupling two.

Specifically, the axial wireless data acquisition card is divided into an axial wireless data acquisition card one and an axial wireless data acquisition card two; the axial wireless data acquisition card receives a composite magnetic force through an axial wireless signal receiver The signal sent by the axial wireless temperature sensor 1 on the axial copper plate 1 inside the coupler; the axial wireless data acquisition card 2 receives the signal from the axial wireless signal receiver 2 on the composite magnetic coupler’s internal axial copper plate 2 The signal sent by the axial wireless temperature sensor 2;

The radial wireless data acquisition card receives the signal sent by the radial wireless temperature sensor on the inner radial copper ring of the composite magnetic coupler through the radial wireless signal receiver;

The data lines include data line one, data line two, data line three, and data line four;

The computer is connected with the variable frequency motor through the data line 1, and is responsible for sending the program instructions of the computer to the variable frequency motor; the computer is connected with the axial wireless data acquisition card 1 through the data line 2, and is responsible for receiving the axial wireless data acquisition card 1. The signal is transmitted to the computer; the computer is connected with the axial wireless data acquisition card two through the data line three, and is responsible for transmitting the signal received by the axial wireless data acquisition card two to the computer; the computer is connected with the radial wireless data acquisition card two through the data line four The data acquisition card connection is responsible for transmitting the signal received by the radial wireless data acquisition card to the computer;

The positive pole of the power supply of the program-controlled current source is connected to the power outlet of the axial wireless data acquisition card one through the wire one; the negative pole of the power supply of the program-controlled current source is connected to the power interface one of the axial wireless data acquisition card one through the wire two connected; the positive electrode 2 of the power supply of the program-controlled current source is connected with the power interface 2 of the axial wireless data acquisition card 2 through the wire 3; the negative electrode 2 of the power supply of the program-controlled current source is connected with the power supply of the axial wireless data acquisition card 2 through the wire 4 The outlet two is connected; the positive pole three of the power supply of the program-controlled current source is connected with the power interface three of the radial wireless data acquisition card through the wire five; the negative pole three of the power supply of the program-controlled current source is connected with the power supply of the radial wireless data acquisition card through the wire six Export triple link;

The shaft coupling is divided into coupling one and coupling two; the variable frequency motor includes an output shaft of the variable frequency motor.

Specifically, the output shaft of the variable frequency motor is connected to the input shaft of the composite magnetic coupler through a coupling, and the input shaft of the composite magnetic coupler is connected to the end cover of the composite magnetic coupler through a connecting piece, It is responsible for transmitting the power of the variable frequency motor to the composite magnetic coupling.

Specifically, the inner side of the end cover one contains a blind hole, the bearing one is installed in the blind hole, the axial copper disc one is installed on the outer ring of the bearing one, and the axial copper disc one is fixed on the end cover one by screws. on the inner side of the blind hole; the outer side of the blind hole is provided with an inner side of the end cover, and the inner side of the end cover is provided with screw holes distributed along the circumference at equal intervals; the hole at the center of the radial permanent magnet disc is provided with keyway.

Specifically, the second bearing is fixed in the inner hole of the second end cover; the second axial copper disc is installed on the outer side of the second bearing, and the second axial copper disc is fixed on the inner side of the second end cover by screws.

A test method for a composite magnetic coupler temperature precision test system, comprising the following steps:

In the first step, the computer transmits the work instruction to the variable frequency motor;

In the second step, the variable frequency motor starts to run after receiving the work order, and the output shaft of the variable frequency motor is connected to the input shaft through coupling one, and the power is transmitted to the input shaft; since the input shaft is fixed on the end cover one through the connecting piece, the end cover one The two end caps are respectively fixed on both sides of the compound magnetic coupler shell, the radial copper ring is fixed on the inner side of the compound magnetic coupler shell by screws, and the axial copper plate one is fixed on the inner side of the end cap one. The second axial copper plate is fixed on the inner side of the second end cover, so the input shaft drives the first end cover, the first axial copper plate, the composite magnetic coupler shell, the radial copper ring, the second axial copper plate, and the second end cover together Rotation will cut the magnetic field lines produced by the axial permanent magnet disk 1, the axial permanent magnet disk 2 and the permanent magnets on the radial permanent magnet disk. According to the principle of electromagnetic induction, the axial permanent magnet disk 1, the radial permanent magnet disk and the Axial permanent magnet disk 2 starts to rotate; axial permanent magnet disk 1 is fixed on the output spindle with flat key 1, axial permanent magnet disk 2 is fixed on the output spindle with flat key 3, and radial permanent magnet disk is fixed with flat key 2 It is fixed on the output spindle, and then drives the output spindle to rotate together; the sixth shoulder of the output spindle is connected with the load motor through the coupling 2, and then drives the load motor to rotate together; the whole process generates magnetic induction torque to drive the load through three permanent magnet disks The motor, compared with the traditional magnetic coupler, realizes the increase of the magnetic induction area and the increase of the magnetic induction torque;

In the third step, the axial wireless temperature sensor 1 monitors the temperature of the axial copper plate 1 in real time, the axial wireless temperature sensor 2 monitors the temperature of the axial copper plate 2 in real time, and the radial wireless temperature sensor monitors the temperature of the radial copper ring in real time; The axial wireless data acquisition card 1 collects the signal from the axial wireless temperature sensor 1 through the axial wireless signal receiver 1, and is responsible for transmitting the processed signal to the computer through the data line 2; the axial wireless data acquisition card 2 passes the axial The wireless signal receiver 2 collects the signal sent by the axial wireless temperature sensor 2, and is responsible for transmitting the processed signal to the computer through the data line 3; the radial wireless data acquisition card collects the signal sent by the radial wireless temperature sensor through the radial wireless signal receiver. The signal is responsible for transmitting the processed signal to the computer through the data line 4. Compared with the traditional external infrared temperature sensor, it realizes the precise temperature measurement of the axial copper disk and radial copper ring inside the composite magnetic coupler;

In the fourth step, the computer sets the alarm temperature through relevant programs, compares the temperature signals transmitted by the axial wireless data acquisition card 1, the axial wireless data acquisition card 2 and the radial wireless data acquisition card with the alarm temperature, if the temperature signals are all less than Alarm temperature, then the computer will continue to run the command feedback to the frequency conversion motor; back to the third step; If a temperature signal is higher than the alarm signal, the computer will feed back instructions to the variable frequency motor to reduce the output speed of the variable frequency motor, so that the speed of the axial copper disc and radial copper ring will be reduced, so as to reduce the heat of the eddy current;

In the fifth step, the computer sets the minimum speed through the relevant program, and compares the output speed of the inverter reduced in the fourth step with the set minimum speed. If the reduced output speed of the inverter is greater than or equal to the set minimum speed, Then the computer will feed back the command to continue running to the variable frequency motor, and return to the third step; if the reduced output speed of the frequency converter is lower than the set minimum speed, the computer will feed back the command to stop running to the variable frequency motor; the variable frequency motor stops working, Then the compound magnetic coupler temperature precision test system stops working. The system has the characteristics of high precision, high temperature protection, and speed protection.

The beneficial effects of the present invention are:

(1) The present invention discloses a composite magnetic coupler temperature precision testing system and its testing method. A miniature temperature wireless sensor is installed on the surface of the axial copper disk and the radial copper ring, and a wireless temperature data card is used to receive the wireless temperature. The real-time signal of the sensor, under the condition of ensuring the normal operation of the composite magnetic coupler, realizes the direct test of the temperature rise of the surface of the copper conductor;

(2) Use a wireless temperature sensor and a wireless data acquisition card to monitor the temperature of the copper conductor inside the composite magnetic coupler in real time, and feed it back to the computer through a wireless data acquisition card, and use relevant programs to set the alarm temperature of the system to prevent the temperature from being too high. The permanent magnet inside the composite magnetic coupler demagnetizes to realize the high temperature protection function; at the same time, the relevant program is used to set the minimum speed of the system to prevent the power requirement of the load motor from being unable to meet the power requirements of the load motor when the speed is too low.

Description of drawings

Figure 1 is a working principle diagram of a composite magnetic coupler temperature precision testing system;

Fig. 2 is an internal structural diagram of a composite magnetic coupler;

Fig. 3 is an output spindle diagram of a composite magnetic coupler;

Fig. 4 is the structural representation of axial copper disk one;

Fig. 5 is the structural representation of axial copper disk two;

Fig. 6 is a structural schematic diagram of a radial copper ring;

Fig. 7 is a structural schematic diagram of a program-controlled current source;

Fig. 8 is a structural schematic diagram of a radial permanent magnet disk;

Fig. 9 is a schematic structural view of an end cap;

Fig. 10 is a flow chart of a composite magnetic coupler temperature precision testing system method.

In the figure, 1. Computer, 101. Data line 1, 2. Axial wireless data acquisition card 1, 201. Axial wireless signal receiver 1, 202. Data line 2, 203. Power interface 1, 204. Power outlet 1 , 3. Axial wireless data acquisition card two, 301. Axial wireless signal receiver two, 302. Data line three, 303. Power interface two, 304. Power outlet two, 4. Radial wireless data acquisition card, 401. Radial wireless signal receiver, 402. Data line four, 403. Power interface three, 404. Power outlet three, 5. Program-controlled current source, 501. Power supply positive pole one, 502. Power supply negative pole one, 503. Power supply positive pole two, 504 .Power supply negative pole 2, 505. Power supply positive pole 3, 506. Power supply negative pole 3, 521. Wire 1, 522. Wire 2, 531. Wire 3, 532. Wire 4, 541. Wire 5, 542. Wire 6, 6. Frequency conversion Motor, 601. Frequency conversion motor output shaft, 7. Radial copper ring, 701. Radial wireless temperature sensor, 9. Load motor, 10. Coupling 2, 11. Axial copper plate 1, 1101. Axial wireless temperature Sensor one, 12. output spindle, 1201. flat key one, 1202. flat key two, 1203. flat key three, 1204. first shaft shoulder, 1205. second shaft shoulder, 1206. third shaft shoulder, 1207. first Four shaft shoulders, 1208. Fifth shaft shoulder, 1209. Sixth shaft shoulder, 13. Composite magnetic coupling housing, 14. Input shaft, 15. Coupling 1, 16. Connector, 17. End cover 1 , 1701. Inner side of end cover 1, 1702. Blind hole, 1703. Screw hole, 18. Axial copper plate 2, 1801. Axial wireless temperature sensor 2, 19. Yoke plate 1, 20. Axial permanent magnet plate 1 , 21. Bearing 1, 23. Permanent magnet, 24. Radial permanent magnet disk, 25. End cover 2, 26. Bearing 2, 27. Axial permanent magnet disk 2, 28. Yoke iron disk 2, 2401. Keyway, 2402. Dovetail groove.

Detailed ways

The present invention will be further explained by specific examples below.

The specific implementation method is to describe the scheme in detail in combination with the accompanying drawings in easy-to-understand language, and the technical scheme recorded in this part should be consistent with the technical scheme described in the claims.

As shown in Figures 1 to 10, a composite magnetic coupler temperature precision testing system according to the present invention includes a computer 1, a data line, a variable frequency motor 6, a composite magnetic coupler, a load motor 9, a wireless temperature sensor, Axial wireless data acquisition card, radial wireless data acquisition card 4, program-controlled current source 5 and shaft coupling; wherein, the program-controlled current source 5 passes through the data line and axial wireless data acquisition card, radial wireless data acquisition card 4 Connect to provide power for the axial wireless data acquisition card and the radial wireless data acquisition card 4;

The composite magnetic coupler includes a composite magnetic coupler housing 13, an end cover 17 installed at one end of the composite magnetic coupler housing 13, and an end cover 17 installed at the other end of the composite magnetic coupler housing 13. And the end cap two 25 that is arranged in parallel with the end cap one 17, the bearing one 21 installed on the inner side of the axis of the end cap one 17, the one installed on the inner side of the axis of the end cap two 25 and connected with the bearing The second bearing 26 corresponding to one 21 runs through the input shaft 14 installed inside the first bearing 21, is fixedly connected with the input shaft 14 and runs through the output main shaft 12 installed inside the second bearing 26, and is close to the end The inner side of the first cover 17 and the outer side of the first bearing 21 is installed with an axial copper disc 11, and the inner side of the second end cover 25 is installed with an axial copper disc 18 on the outer side of the second bearing 26. , The outer wall of the output spindle 12 is sequentially installed with an axial permanent magnet disk 20, a radial permanent magnet disk 24 and an axial permanent magnet disk 2 27 along the direction from the first bearing 21 to the second bearing 26. The inside of the axial permanent magnet disk one 20 is equipped with permanent magnets 23 distributed in a circular array, and the outside of the axial permanent magnet disk one 20 is arranged on the yoke iron disk one 19; the axial permanent magnet disk two 27 Permanent magnets 23 distributed in a circular array are installed in the inside, and the outer side of the axial permanent magnet disk two 27 is arranged on the yoke iron disk two 28; A radial copper ring 7 corresponding to the radial permanent magnet disk 24;

The axial copper plate 11 is installed with eight groups at equal intervals along the circumference, and each group is provided with four axial wireless temperature sensors 1101 in the radial direction, and the axial copper plate 2 18 is installed at equal intervals along the circumference. There are eight groups and each group is provided with four axial wireless temperature sensors 1801 in the radial direction; twelve radial wireless temperature sensors 701 are installed at equal intervals along the circumferential direction at the inner edge of the radial copper ring 7, And the radial wireless temperature sensor 701 is provided with two groups; the radial wireless temperature sensor 701 is used to directly monitor the temperature of the axial copper plate 11, the axial copper plate 2 18 and the radial copper ring 7;

Described axial permanent magnet disk one 20 and axial permanent magnet disk two 27 offer eight slotted through holes, and described permanent magnet 23 is installed in this slotted through hole; Described radial permanent magnet disk 24 inner edge Ten dovetail grooves 2402 are equally spaced in the circumferential direction, and the permanent magnet 23 is installed in the dovetail groove 2402; the radial permanent magnet disk 24 is fixed on the third shoulder 1206 of the output spindle 12 through the flat key 2 1202;

The output spindle 12 includes a first shoulder 1204, a second shoulder 1205, a third shoulder 1206, a fourth shoulder 1207, a fifth shoulder 1208, and a sixth shoulder 1209; the first shoulder 1204 is installed In the inner hole of the bearing one 21; the second shoulder 1205 fixes the axial permanent magnet disk one 20 through the flat key one 1201; the third shoulder 1206 fixes the radial permanent magnet disk 24 through the flat key two 1202; The fourth shoulder 1207 fixes the axial permanent magnet disk 2 27 through the flat key 3 1203; the fifth shoulder 1208 is fixed in the inner hole of the bearing 2 26; the sixth shoulder 1209 passes through the coupling 2 10 is connected with load motor 9.

Specifically, the axial wireless data acquisition card is divided into axial wireless data acquisition card one 2 and axial wireless data acquisition card two 3; the axial wireless data acquisition card one 2 passes the axial wireless signal receiver one 201 Receive the signal sent by the axial wireless temperature sensor 1101 on the axial copper plate 11 inside the composite magnetic coupler; the axial wireless data acquisition card 2 3 receives the composite magnetic coupling through the axial wireless signal receiver 2 301 The signal sent by the axial wireless temperature sensor 2 1801 on the axial copper plate 2 18 inside the device;

The radial wireless data acquisition card 4 receives the signal sent by the radial wireless temperature sensor 701 on the inner radial copper ring 7 of the composite magnetic coupler through the radial wireless signal receiver 401;

The data lines include data line one 101, data line two 202, data line three 302, and data line four 402;

The computer 1 is connected with the frequency conversion motor 6 through the data line one 101, and is responsible for sending the program instructions of the computer 1 to the frequency conversion motor 6; the computer 1 is connected with the axial wireless data acquisition card one 2 through the data line two 202, and is responsible for sending The signal received by the axial wireless data acquisition card one 2 is transmitted to the computer 1; the computer 1 is connected with the axial wireless data acquisition card two 3 through the data line three 302, and is responsible for transmitting the signal received by the axial wireless data acquisition card two 3 Give computer 1; Described computer 1 is connected with radial wireless data acquisition card 4 by data line 4402, is responsible for the signal that radial wireless data acquisition card 4 receives is delivered to computer 1;

The positive pole one 501 of the power supply of the program-controlled current source 5 is connected to the power outlet one 204 of the axial wireless data acquisition card one 2 through a wire one 521; The power supply interface one 203 of the data acquisition card one 2 is connected; the power supply positive electrode two 503 of the program-controlled current source 5 is connected with the power interface two 303 of the axial wireless data acquisition card two 3 through the wire three 531; the program-controlled current source 5 The power supply negative pole two 504 is connected with the power outlet two 304 of the axial wireless data acquisition card two 3 through the wire four 532; the power supply positive pole three 505 of the program-controlled current source 5 is connected with the power interface of the radial wireless data acquisition card 4 through the wire five 541 Three 403 are connected; the power supply negative pole three 506 of the program-controlled current source 5 is connected with the power outlet three 404 of the radial wireless data acquisition card 4 through the wire six 542;

The shaft coupling is divided into coupling one 15 and coupling two 10; the variable frequency motor 6 includes an output shaft 601 of the variable frequency motor.

Specifically, the output shaft 601 of the variable frequency motor is connected to the input shaft 14 of the composite magnetic coupler through a coupling 15, and the input shaft 14 of the composite magnetic coupler is connected to the composite magnetic coupler through a connecting piece 16. The end cover one 17 is connected and is responsible for transmitting the power of the variable frequency motor 6 to the composite magnetic coupler.

Specifically, the inner side of the end cover 17 contains a blind hole 1702, the bearing 121 is installed in the blind hole 1702, the axial copper disc 11 is installed on the outer ring of the bearing 121, and the axial copper disc 11 It is fixed on the inner side of the end cap 17 by screws; the outer side of the blind hole 1702 is provided with an inner side 1701 of the end cap, and the inner side 1701 of the end cap is provided with screw holes 1703 distributed at equal intervals along the circumference; A keyway 2401 is provided at the hole at the center of the radial permanent magnet disk 24 .

Specifically, the second bearing 26 is fixed in the inner hole of the second end cover 25; the second axial copper disc 18 is installed on the outside of the second bearing 26, and the second axial copper disc 18 is fixed on the second end cover 25 by screws. inside.

A test method for a composite magnetic coupler temperature precision test system, comprising the following steps:

In the first step, the computer 1 transmits the work instruction to the variable frequency motor 6;

In the second step, the variable frequency motor 6 starts to run after receiving the work order, and the output shaft 601 of the variable frequency motor is connected with the input shaft 14 through the coupling 15, and the power is transmitted to the input shaft 14; On the cover one 17, the end cover one 17 and the end cover two 25 are respectively fixed on both sides of the composite magnetic coupler housing 13, and the radial copper ring 7 is fixed on the inner side of the composite magnetic coupler housing 13 by screws. Axial copper plate 11 is fixed on the inner side of end cover 17, and axial copper plate 2 18 is fixed on the inner side of end cover 25, so input shaft 14 drives end cover 17, axial copper plate 11, composite magnetic force The coupler housing 13, the radial copper ring 7, the axial copper disk 2 18, and the end cover 25 rotate together to cut the axial permanent magnet disk 1 20, the axial permanent magnet disk 2 27 and the radial permanent magnet disk 24 The magnetic lines of force produced by the permanent magnet 23 on the top, according to the principle of electromagnetic induction, the axial permanent magnet disk one 20, the radial permanent magnet disk 24 and the axial permanent magnet disk two 27 start to rotate; the axial permanent magnet disk one 20 adopts a flat key One 1201 is fixed on the output spindle 12, the axial permanent magnet disk 2 27 is fixed on the output spindle 12 by flat key 3 1203, the radial permanent magnet disk 24 is fixed on the output spindle 12 by flat key 2 1202, and then drives the output spindle 12 rotate together; the sixth shoulder 1209 of the output spindle 12 is connected with the load motor 9 through the coupling 2 10, and then drives the load motor 9 to rotate together; the whole process generates magnetic induction torque through three permanent magnet discs to drive the load motor 9, and Compared with the traditional magnetic coupler, the increase of the magnetic induction area and the increase of the magnetic induction torque are realized;

In the third step, the axial wireless temperature sensor 1101 monitors the temperature of the axial copper plate 11 in real time, the axial wireless temperature sensor 2 1801 monitors the temperature of the axial copper plate 2 18 in real time, and the radial wireless temperature sensor 701 monitors the radial direction in real time The temperature of the copper ring 7; the axial wireless data acquisition card one 2 collects the signal sent by the axial wireless temperature sensor one 1101 through the axial wireless signal receiver one 201, and is responsible for transmitting the processed signal to the computer 1 through the data line two 202 The axial wireless data acquisition card two 3 collects the signal sent by the axial wireless temperature sensor two 1801 through the axial wireless signal receiver two 301, and is responsible for transmitting the processed signal to the computer 1 through the data line three 302; the radial wireless data The acquisition card 4 collects the signal sent by the radial wireless temperature sensor 701 through the radial wireless signal receiver 401, and is responsible for transmitting the processed signal to the computer 1 through the data line 4402. Compared with the traditional external infrared temperature sensor, it realizes The precise temperature measurement of the inner axial copper disk and radial copper ring 7 of the composite magnetic coupler is achieved;

In the fourth step, the computer 1 sets the alarm temperature through relevant programs, compares the temperature signals transmitted by the axial wireless data acquisition card 1 2, the axial wireless data acquisition card 2 3 and the radial wireless data acquisition card 4 with the alarm temperature, if If the temperature signals are all less than the alarm temperature, then the computer 1 will feed back the instruction to continue running to the variable frequency motor 6; return to the third step;

If the temperature transmitted by the axial wireless data acquisition card 1 2, the axial wireless data acquisition card 2 3 and the radial wireless data acquisition card 4 has a temperature signal higher than the alarm signal, then the computer 1 feeds back instructions to the variable frequency motor 6. Reduce the output speed of the variable frequency motor 6, so that the speed of the axial copper disc and the radial copper ring 7 is reduced, so as to achieve the purpose of reducing the heat of the eddy current;

In the fifth step, the computer 1 sets the minimum speed through relevant programs, and compares the output speed of the variable frequency motor 6 reduced in the fourth step with the set minimum speed. If the reduced output speed of the variable frequency motor 6 is greater than or equal to the set The lowest speed, then the computer 1 feeds back the instruction to continue running to the variable frequency motor 6, and returns to the third step;

If the reduced output speed of the variable frequency motor 6 is less than the set minimum speed, the computer 1 will feed back the command to stop the operation to the variable frequency motor 6; the variable frequency motor 6 stops working, and the composite magnetic coupler temperature precision testing system stops working. The system has the characteristics of high precision, high temperature protection, speed protection and so on. The variable frequency motor model is 1LA8457-4PM70-Z, the load motor model is Y132S2-2, the axial wireless data acquisition card model is CH-D3G7Z19, the radial wireless data acquisition card model is CH-D3G7M5, and the temperature wireless sensor is SAW The model of the temperature sensor is SST-001, and the model of the programmable current source is ATS-2401C.

To sum up, the present invention discloses a composite magnetic coupler temperature precision testing system and its testing method. A miniature temperature wireless sensor is installed on the surface of the axial copper disk and the radial copper ring, and a wireless temperature data card is used to receive the temperature. The real-time signal of the wireless temperature sensor can directly test the temperature rise of the copper conductor surface under the condition of ensuring the normal operation of the composite magnetic coupler; the wireless temperature sensor and the wireless data acquisition card are used to monitor the copper inside the composite magnetic coupler in real time. The temperature of the conductor is fed back to the computer through the wireless data acquisition card, and the relevant program is used to set the alarm temperature of the system to prevent the demagnetization of the permanent magnet inside the composite magnetic coupler when the temperature is too high, so as to realize the high temperature protection function; at the same time, the relevant program is adopted Set the minimum speed of the system to prevent the power requirements of the load motor from being unable to meet the power requirements of the load motor when the speed is too low.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. A composite magnetic coupler temperature precision testing system is characterized in that: it comprises a computer (1), a data line, a variable frequency motor (6), a composite magnetic coupler, a load motor (9), a wireless temperature sensor, a shaft to the wireless data acquisition card, the radial wireless data acquisition card (4), the program-controlled current source (5) and the coupling; wherein, the program-controlled current source (5) passes through the data line and the axial wireless data acquisition card, the radial The wireless data acquisition card (4) is connected to provide power for the axial wireless data acquisition card and the radial wireless data acquisition card (4); The composite magnetic coupler includes a composite magnetic coupler housing (13), an end cap (17) installed at one end of the composite magnetic coupler housing (13), an end cover (17) installed on the composite magnetic coupling The other end of the device housing (13) and the end cap two (25) arranged parallel to the end cap one (17), the bearing one (21) installed on the inner side of the shaft center of the end cap one (17), installed on The bearing two (26) inside the shaft center of the end cover two (25) and corresponding to the bearing one (21), runs through the input shaft (14) installed inside the bearing one (21), and the The input shaft (14) is fixedly connected and runs through the output main shaft (12) installed inside the bearing two (26), close to the inner side of the end cover one (17) and located outside the bearing one (21) Axial copper disc one (11) is installed, close to the inner side of the end cover two (25) and positioned at the outer side of the bearing two (26) and axial copper disc two (18), the output spindle ( 12) The outer wall of the bearing one (21) to the bearing two (26) is sequentially installed with an axial permanent magnet disk one (20), a radial permanent magnet disk (24) and an axial permanent magnet disk two (27), the inside of the axial permanent magnet disk one (20) is equipped with permanent magnets (23) distributed in a circular array, and the outer side of the axial permanent magnet disk one (20) is arranged on the yoke iron disk One (19); the inside of the axial permanent magnet disk two (27) is equipped with permanent magnets (23) distributed in a circular array, and the outer side of the axial permanent magnet disk two (27) is arranged on the yoke Disk two (28); the middle part of the inner wall of the composite magnetic coupler housing (13) is provided with a radial copper ring (7) corresponding to the radial permanent magnet disk (24); The axial copper plate one (11) is equipped with eight groups at equal intervals along the circumference, and each group is provided with four axial wireless temperature sensors one (1101) in the radial direction, and the axial copper plate two (18) Eight groups are installed at equal intervals along the circumference and each group is provided with four axial wireless temperature sensors 2 (1801) in the radial direction; the inner edge of the radial copper ring (7) is installed at equal intervals along the circumference Twelve radial wireless temperature sensors (701), and the radial wireless temperature sensors (701) are provided with two groups; the radial wireless temperature sensors (701) are used to directly monitor the axial copper disk one (11), shaft To the temperature of copper plate two (18) and radial copper ring (7); Described axial permanent magnet disk one (20) and axial permanent magnet disk two (27) offer eight grooved through holes, and described permanent magnet (23) is installed in this grooved through hole; Ten dovetail grooves (2402) are provided at equal intervals along the circumferential direction in the permanent magnet disk (24), and the permanent magnets (23) are installed in the dovetail grooves (2402); the radial permanent magnet disk (24) passes through the flat The key (1202) is fixed on the third shoulder (1206) of the output spindle (12); The output spindle (12) includes a first shoulder (1204), a second shoulder (1205), a third shoulder (1206), a fourth shoulder (1207), a fifth shoulder (1208), a sixth Shaft shoulder (1209); said first shaft shoulder (1204) is installed in the inner hole of bearing one (21); said second shaft shoulder (1205) fixes axial permanent magnet disk one through flat key one (1201) (20); the third shoulder (1206) fixes the radial permanent magnet disk (24) through flat key two (1202); the fourth shoulder (1207) fixes the axial permanent magnet disk (24) through flat key three (1203) The second magnet disc (27); the fifth shoulder (1208) is fixed in the inner hole of the second bearing (26); the sixth shoulder (1209) is connected to the load motor (9) through the second shaft coupling (10) ) connection. 2. according to claim 1 said a kind of composite magnetic coupler temperature precision testing system, it is characterized in that, described axial wireless data acquisition card is divided into axial wireless data acquisition card one (2) and axial wireless data acquisition card Card two (3); the axial wireless data acquisition card one (2) receives the axial wireless temperature on the inner axial copper disk one (11) of the composite magnetic coupler through the axial wireless signal receiver one (201) The signal sent by the sensor one (1101); the axial wireless data acquisition card two (3) receives the shaft on the inner axial copper disk two (18) of the composite magnetic coupler through the axial wireless signal receiver two (301) A signal sent to the wireless temperature sensor two (1801); The radial wireless data acquisition card (4) receives the signal sent by the radial wireless temperature sensor (701) on the inner radial copper ring (7) of the composite magnetic coupler through the radial wireless signal receiver (401); The data lines include data line one (101), data line two (202), data line three (302), and data line four (402); The computer (1) is connected with the frequency conversion motor (6) through the data line one (101), and is responsible for sending the program instructions of the computer (1) to the frequency conversion motor (6); the computer (1) is connected with the frequency conversion motor (6) through the data line two (202 ) is connected with the axial wireless data acquisition card one (2), and is responsible for transmitting the signal received by the axial wireless data acquisition card one (2) to the computer (1); Axial wireless data acquisition card two (3) connections are responsible for passing the signal received by axial wireless data acquisition card two (3) to computer (1); The wireless data acquisition card (4) is connected, and is responsible for transmitting the signal received by the radial wireless data acquisition card (4) to the computer (1); The positive pole one (501) of the power supply of the program-controlled current source (5) is connected to the power outlet one (204) of the axial wireless data acquisition card one (2) through a wire one (521); The power supply negative pole one (502) is connected to the power supply interface one (203) of the axial wireless data acquisition card one (2) through the wire two (522); the power supply positive pole two (503) of the program-controlled current source (5) is connected through the wire three (531) is connected with the power interface two (303) of the axial wireless data acquisition card two (3); the power supply negative electrode two (504) of the program-controlled current source (5) is connected to the axial wireless data acquisition through the wire four (532) The power supply outlet two (304) of the card two (3) is connected; the power supply positive pole three (505) of the program-controlled current source (5) is through the power supply interface three (541) of the radial wireless data acquisition card (4) through the wire five (541) 403) is connected; the power supply negative pole three (506) of the program-controlled current source (5) is connected with the power outlet three (404) of the radial wireless data acquisition card (4) through the wire six (542); The shaft coupling is divided into a shaft coupling one (15) and a shaft coupling two (10); the variable frequency motor (6) includes a variable frequency motor output shaft (601). 3. A kind of composite magnetic coupler temperature precision testing system according to claim 2, it is characterized in that, described variable frequency motor output shaft (601) is connected with the input shaft of composite magnetic coupler by shaft coupling one (15) (14) connection, the input shaft (14) of the composite magnetic coupler is connected with the end cover one (17) of the composite magnetic coupler through the connector (16), responsible for the power transmission of the variable frequency motor (6) to Composite magnetic coupler. 4. A composite magnetic coupler temperature precision testing system according to claim 1, characterized in that the inner side of the end cover one (17) contains a blind hole (1702), and the bearing one (21) is installed in the blind hole (1702), the axial copper disk one (11) is installed on the outer ring of the bearing one (21), and the axial copper disk one (11) is fixed on the inner side of the end cover one (17) by screws; The outer side of the blind hole (1702) is provided with an inner side of the end cover (1701), and the inner side of the end cover (1701) is provided with screw holes (1703) distributed at equal intervals along the circumference; the radial permanent magnet disc The hole at the center of (24) is provided with a keyway (2401). 5. A kind of composite magnetic coupler temperature precision testing system according to claim 1, is characterized in that, described bearing two (26) are fixed in the inner hole of end cover two (25); Two (18) are installed on the outside of bearing two (26), and axial copper disk two (18) are fixed on the inboard of end cover two (25) by screws. 6. A test method of the composite magnetic coupler temperature precision test system according to claims 1-5, characterized in that, Include the following steps: In the first step, the computer (1) transmits the work instruction to the variable frequency motor (6); In the second step, the variable-frequency motor (6) starts to run after receiving the work order, and the output shaft (601) of the variable-frequency motor (601) is connected with the input shaft (14) through coupling one (15), and the power is transmitted to the input shaft (14); The input shaft (14) is fixed on the end cover one (17) through the connector (16), and the end cover one (17) and the end cover two (25) are respectively fixed on both sides of the composite magnetic coupling housing (13) On the top, the radial copper ring (7) is fixed on the inner side of the composite magnetic coupling housing (13) by screws, the axial copper plate one (11) is fixed on the inner side of the end cover one (17), and the axial copper plate two (18) is fixed on the inner side of end cover two (25), so the input shaft (14) drives end cover one (17), axial copper plate one (11), composite magnetic coupling housing (13), radial Copper ring (7), axial copper disc two (18), end cover two (25) rotate together, can cut axial permanent magnet disc one (20), axial permanent magnet disc two (27) and radial permanent magnet The magnetic field lines produced by the permanent magnets (23) on the disk (24), according to the principle of electromagnetic induction, the axial permanent magnet disk one (20), the radial permanent magnet disk (24) and the axial permanent magnet disk two (27) start Rotation; Axial permanent magnet disk one (20) is fixed on the output spindle (12) by flat key one (1201), and axial permanent magnet disk two (27) is fixed on the output spindle (12) by flat key three (1203) On the top, the radial permanent magnet disk (24) is fixed on the output spindle (12) by flat key two (1202), and then drives the output spindle (12) to rotate together; the sixth shoulder (1209) of the output spindle (12) passes through Coupling 2 (10) is connected with the load motor (9), and then drives the load motor (9) to rotate together; in the whole process, the load motor (9) is driven by the magnetic induction torque generated by three permanent magnet discs to realize the increase of the magnetic field induction area , the increase of magnetic induction torque; In the third step, the axial wireless temperature sensor one (1101) monitors the temperature of the axial copper plate one (11) in real time, and the axial wireless temperature sensor two (1801) monitors the temperature of the axial copper plate two (18) in real time. The wireless temperature sensor (701) monitors the temperature of the radial copper ring (7) in real time; the axial wireless data acquisition card one (2) collects the axial wireless temperature sensor one (1101) through the axial wireless signal receiver one (201). The signal is responsible for transmitting the processed signal to the computer (1) through the data line two (202); the axial wireless data acquisition card two (3) collects the axial wireless temperature sensor through the axial wireless signal receiver two (301) The signal sent by the second (1801) is responsible for transmitting the processed signal to the computer (1) through the data line three (302); the radial wireless data acquisition card (4) collects the radial data through the radial wireless signal receiver (401). The signal sent by the wireless temperature sensor (701) is responsible for transmitting the processed signal to the computer (1) through the data line 4 (402), so as to realize the connection between the axial copper disk and the radial copper ring (7) inside the composite magnetic coupler. Precision temperature measurement; In the fourth step, the computer (1) sets the alarm temperature through relevant programs, and transmits the axial wireless data acquisition card one (2), the axial wireless data acquisition card two (3) and the radial wireless data acquisition card (4) The temperature signal is compared with the alarm temperature, if the temperature signal is all less than the alarm temperature, then the computer (1) feeds back the instruction to continue running to the variable frequency motor (6); get back to the third step; If the temperature transmitted by axial wireless data acquisition card one (2), axial wireless data acquisition card two (3) and radial wireless data acquisition card (4) has a temperature signal higher than the alarm signal, the computer will (1) Feedback instructions to the frequency conversion motor (6), reduce the output speed of the frequency conversion motor (6), reduce the speed of the axial copper disc and radial copper ring (7), and reduce the eddy current heat; In the fifth step, the computer (1) sets the minimum speed through relevant programs, and compares the output speed of the frequency converter (6) reduced in the fourth step with the set minimum speed. If the output speed of the frequency converter (6) after reduction is greater than or equal to the set minimum speed, the computer (1) will feed back the command to continue running to the variable frequency motor (6), and return to the third step; if the reduced output speed of the frequency converter (6) is less than the set minimum speed , then the computer (1) feeds back the command to stop running to the variable frequency motor (6); when the variable frequency motor (6) stops working, the composite magnetic coupler temperature precision testing system stops working.