Identification test method, system, medium and equipment for permanent magnet coupler

Abstract

The invention relates to an identification test method, system, medium and equipment for a permanent magnet coupler, and the method comprises the steps: executing a reference test on a test prototype, and judging whether the test prototype meets a reference test standard or not; carrying out an extreme condition test on the test prototype, and judging whether the test prototype meets an extreme condition test standard or not; testing the performance of the test prototype along with time change, and judging whether the test prototype meets the test standard of the performance along with time change or not; performing a simulated working condition test on the test prototype, and judging whether the test prototype meets a simulated working condition test standard or not; and performing benchmark performance reinspection on the test prototype, checking whether the benchmark functional characteristics of the test prototype conform to the acceptance criterion, if so, determining that the test prototype is qualified, and if not, ending the identification test. According to the method, the test regulations of the permanent magnet coupler can be identified in the current industry, the use safety of the permanent magnet coupler in the service life of the nuclear power station in a gentle environment can be ensured, and guidance is provided for subsequent quality identification of the permanent magnet coupler.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear safety, more particularly, to a kind of permanent magnet coupler identification test method, system, medium and equipment. BACKGROUND

[0002] Permanent magnet transmission is a new type of transmission based on magnetic transmission principle, which has been widely used in thermal power generation, petrochemical industry and other industries such as high-power load equipment such as condensate pump, fan, belt conveyor and other systems.

[0003] Permanent magnet coupler is installed between motor and load equipment shaft, motor rotates to drive conductor disc to cut the magnetic field generated by the strong rare earth magnet (such as neodymium iron boron) in the permanent magnet disc, so that eddy current is generated in the conductor disc, which generates a counter magnetic field on the conductor disc, pulling the relative movement of the conductor disc and the permanent magnet disc, thereby realizing the torque transmission between the motor and the load. Because of its non-contact torque transmission, high efficiency, maintenance-free and other advantages, the application scene of permanent magnet coupler in nuclear power plant safety important rotating equipment will be more and more. In order to ensure that the safety important equipment of nuclear power plant completes its predetermined function under the specified operating conditions and environmental conditions, the relevant standards and regulations require that the equipment must pass quality identification.

[0004] For new equipment without nuclear power plant application experience, test method is generally used for quality identification. However, there is no identification test procedure and guide for safety important permanent magnet coupler in the industry at present, which cannot provide method guidance for identification test. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a kind of permanent magnet coupler identification test method, system, medium and equipment for solving the problems in the prior art.

[0006] The technical scheme adopted by the present application to solve its technical problem is: a kind of permanent magnet coupler identification test method is constructed, including the following steps:

[0007] Step S1: performing reference test on test prototype, and judging whether the test prototype meets the reference test standard, if yes, executing step S2, if not, ending identification test;

[0008] Step S2: performing limit condition test on the test prototype, and judging whether the test prototype meets the limit condition test standard, if yes, executing step S3, if not, ending identification test;

[0009] Step S3: performing performance change with time test on the test prototype, and judging whether the test prototype meets the performance change with time test standard, if yes, executing step S4, if not, ending identification test;

[0010] Step S4: Simulating the test sample under working conditions, and judging whether the test sample meets the simulation working condition test standard, if yes, executing step S5, if not, ending the identification test;

[0011] Step S5: Rechecking the reference performance of the test sample, and checking whether the reference function characteristics of the test sample meet the acceptance criteria, if yes, the identification is qualified, if not, ending the identification test.

[0012] In the identification test method of the permanent magnet coupler, the step S1 specifically comprises:

[0013] Air gap measurement is performed on the test sample to obtain air gap measurement data;

[0014] According to the air gap measurement data, it is judged whether the test sample meets the air gap standard;

[0015] If the air gap standard is met, the slip ratio measurement is performed on the test sample to obtain slip ratio measurement data, if the air gap standard is not met, it is judged that the test sample does not meet the reference test standard;

[0016] According to the slip ratio measurement data, it is judged whether the test sample meets the slip ratio standard;

[0017] If the slip ratio standard is met, the temperature measurement of the permanent magnet disc / conductor disc is performed on the test sample to obtain the temperature data of the permanent magnet disc / conductor disc, if the slip ratio standard is not met, it is judged that the test sample does not meet the reference test standard;

[0018] According to the temperature data of the permanent magnet disc / conductor disc, it is judged whether the test sample meets the temperature rise standard;

[0019] If the temperature rise standard is met, it is judged that the test sample meets the reference test standard, if the temperature rise standard is not met, it is judged that the test sample does not meet the reference test standard.

[0020] In the identification test method of the permanent magnet coupler, the step S2 specifically comprises:

[0021] Overload running test is performed on the test sample, and it is judged whether the test sample meets the overload running test standard;

[0022] If the overload running test standard is met, high temperature running test is performed on the test sample, and it is judged whether the test sample meets the high temperature running test standard, if the overload running test standard is not met, it is judged that the test sample does not meet the limit working condition test standard;

[0023] If the high-temperature operation test standard is met, a temperature change test is performed on the test sample machine, and it is judged whether the test sample machine meets the temperature change test standard; if the high-temperature operation test standard is not met, it is judged that the test sample machine does not meet the limit working condition test standard;

[0024] If the temperature change test standard is met, an electromagnetic compatibility test is performed on the test sample machine, and it is judged whether the test sample machine meets the electromagnetic compatibility test standard; if the temperature change test standard is not met, it is judged that the test sample machine does not meet the limit working condition test standard;

[0025] If the electromagnetic compatibility test standard is met, it is judged that the test sample machine meets the limit working condition test standard; if the electromagnetic compatibility test standard is not met, it is judged that the test sample machine does not meet the limit working condition test standard.

[0026] In the identification test method of the permanent magnet coupler, the overload operation test performed on the test sample machine and the judgment of whether the test sample machine meets the overload operation test standard include:

[0027] The test sample machine is controlled to operate at rated torque, and the load is gradually increased to 3 times the rated output torque, and the test sample machine is controlled to operate continuously for 15s;

[0028] It is judged whether the test sample machine operates smoothly and has no step-out phenomenon;

[0029] If the operation is smooth and there is no step-out phenomenon, it is judged that the test sample machine meets the overload operation test standard, otherwise it does not meet the overload operation test standard.

[0030] In the identification test method of the permanent magnet coupler, the step S3 specifically includes:

[0031] The test sample machine is subjected to a vibration aging test;

[0032] After completing the vibration aging test, the test sample machine is subjected to related parameter testing to obtain test data;

[0033] According to the test data, it is judged whether the test sample machine meets the performance change with time test standard.

[0034] In the identification test method of the permanent magnet coupler, the vibration aging test performed on the test sample machine includes:

[0035] The test sample machine is subjected to a sweep frequency test according to a set vibration condition;

[0036] After completing the sweep frequency test, the test sample machine is subjected to a resonance point endurance test;

[0037] After the resonance point durability test is completed, a vibration aging test is performed on the test prototype.

[0038] In the identification test method of the permanent magnet coupler, the step S4 specifically comprises:

[0039] The test prototype is subjected to a shock resistance test.

[0040] After the shock resistance test is completed, the test prototype is detected to obtain a test detection result.

[0041] According to the test detection result, it is determined whether the test prototype meets the simulation working condition test standard.

[0042] The application further provides an identification test system of a permanent magnet coupler, comprising:

[0043] A reference test unit is configured to perform a reference test on a test prototype and determine whether the test prototype meets a reference test standard.

[0044] A limit working condition test unit is configured to perform a limit working condition test on the test prototype and determine whether the test prototype meets a limit working condition test standard.

[0045] A performance change test unit is configured to perform a performance change over time test on the test prototype and determine whether the test prototype meets a performance change over time test standard.

[0046] A simulation working condition test unit is configured to perform a simulation working condition test on the test prototype and determine whether the test prototype meets a simulation working condition test standard.

[0047] A performance retest unit is configured to perform a reference performance retest on the test prototype and check whether a reference functional characteristic of the test prototype meets an acceptance criterion.

[0048] The application further provides a storage medium storing a computer program, wherein the computer program is adapted to be loaded by a processor to execute the steps of the identification test method of the permanent magnet coupler.

[0049] The application further provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps of the identification test method of the permanent magnet coupler by calling the computer program stored in the memory.

[0050] The qualification test method, system, medium, and equipment for permanent magnet couplers of this invention have the following beneficial effects: They include: performing benchmark tests on the test prototype and determining whether the test prototype meets the benchmark test standards; performing extreme operating condition tests on the test prototype and determining whether the test prototype meets the extreme operating condition test standards; performing performance-over-time variation tests on the test prototype and determining whether the test prototype meets the performance-over-time variation test standards; performing simulated operating condition tests on the test prototype and determining whether the test prototype meets the simulated operating condition test standards; and re-verifying the benchmark performance of the test prototype and checking whether the benchmark functional characteristics of the test prototype meet the acceptance criteria. If they meet the criteria, the qualification is passed; if not, the qualification test is terminated. This invention can establish the current industry-standard qualification test procedures for permanent magnet couplers, ensuring the safe use of permanent magnet couplers throughout their service life in nuclear power plants and mild environments, and providing guidance for the subsequent quality qualification of permanent magnet couplers. Attached Figure Description

[0051] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0052] Figure 1 This is a flowchart illustrating the identification test method for permanent magnet couplers provided in an embodiment of the present invention;

[0053] Figure 2 This is a logic block diagram of the evaluation test system for permanent magnet couplers provided in an embodiment of the present invention. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] This invention provides a qualification test method for permanent magnet couplers. This method verifies the functional integrity, extreme condition adaptability, and accident condition reliability of the device under nuclear-grade conditions through a multi-dimensional test system. The qualification test method mainly includes four stages: baseline test, extreme condition test, performance change over time test, and simulated accident condition test. If any stage fails to meet the relevant acceptance criteria, the permanent magnet coupler is deemed unqualified. After all four test stages meet the relevant acceptance criteria, a baseline performance retest is performed to ensure that the device's performance error is controllable.

[0056] In a preferred embodiment, such as Figure 1 As shown, the qualification test method for this permanent magnet coupler includes the following steps:

[0057] Step S1: performing a reference test on the test prototype, and determining whether the test prototype meets the reference test standard, if yes, performing step S2, if not, ending the identification test.

[0058] It should be noted that before performing step S1, a pre-test preparation work needs to be performed first. Specifically, the pre-test preparation work can include: preparing a test prototype and appearance inspection of the prototype. The test prototype needs to be guaranteed to represent the typical characteristics (such as function, material, structure, installation form, driving output, etc.) of the permanent magnet coupler, and the test prototype has passed the type test items specified in GB / T 38763-2020 or not lower than the standard manufacturer specified. The appearance inspection mainly includes: label inspection, size inspection, surface coating inspection, structure fastening inspection, metal corrosion inspection, etc. The acceptance criteria for appearance inspection includes but is not limited to: complete appearance, size regulation, no debris generation, smooth running, etc. The means for appearance inspection can adopt various forms at present, which is not limited in the present application.

[0059] In the embodiment of the present application, step S1 specifically includes: performing air gap measurement on the test prototype to obtain air gap measurement data; determining whether the test prototype meets the air gap standard according to the air gap measurement data; if the air gap standard is met, performing slip ratio measurement on the test prototype to obtain slip ratio measurement data; if the air gap standard is not met, determining that the test prototype does not meet the reference test standard; determining whether the test prototype meets the slip ratio standard according to the slip ratio measurement data; if the slip ratio standard is met, performing permanent magnet disc / conductor disc temperature measurement on the test prototype to obtain temperature data of the permanent magnet disc / conductor disc; if the slip ratio standard is not met, determining that the test prototype does not meet the reference test standard; determining whether the test prototype meets the temperature rise standard according to the temperature data of the permanent magnet disc / conductor disc; if the temperature rise standard is met, determining that the test prototype meets the reference test standard, if the temperature rise standard is not met, determining that the test prototype does not meet the reference test standard. When it is determined that the reference test standard is not met, it can be determined that the permanent magnet coupler does not meet the acceptance criteria, i.e. unqualified, at this time, the subsequent test is not performed, and the test is directly ended.

[0060] Optionally, in the embodiment of the present application, the air gap measurement can be in various forms, for example, a vernier caliper can be used to measure the permanent magnet disc and the conductor disc at three points along the circumference. The air gap standard is that the measurement deviation is less than or equal to 5%. When the air gap standard is met, the test machine is operated at the rated torque under the standard air gap, and the input / output speed of the test machine is monitored. Optionally, the slip standard is that the slip is less than or equal to 3%. It should be noted that the specific data of the slip standard depends on the performance requirements of the permanent magnet coupler. For the asynchronous permanent magnet coupler of a nuclear power plant, the slip is generally not greater than 3%, and for the synchronous permanent magnet coupler, the slip is generally not greater than 1%. When the slip standard is met, the test machine is continuously operated at the rated torque under the standard air gap, and after reaching thermal equilibrium (i.e., the temperature change is not more than 0.5K within 1h), the temperature rise data of the permanent magnet disc / conductor disc is measured. If the temperature rise data meets the temperature rise standard, it is determined that the test machine meets the reference test standard. Optionally, the temperature rise standard is that the temperature rise of the permanent magnet disc / conductor disc is less than or equal to 10℃.

[0061] Step S2: performing a limit condition test on the test machine, and determining whether the test machine meets the limit condition test standard. If yes, step S3 is performed, and if not, the identification test is ended.

[0062] In the embodiment of the present application, step S2 specifically includes: performing an overload operation test on the test machine, and determining whether the test machine meets the overload operation test standard; if the overload operation test standard is met, performing a high-temperature operation test on the test machine, and determining whether the test machine meets the high-temperature operation test standard; if the overload operation test standard is not met, determining that the test machine does not meet the limit condition test standard; if the high-temperature operation test standard is met, performing a temperature change test on the test machine, and determining whether the test machine meets the temperature change test standard; if the high-temperature operation test standard is not met, determining that the test machine does not meet the limit condition test standard; if the temperature change test standard is met, performing an electromagnetic compatibility test on the test machine, and determining whether the test machine meets the electromagnetic compatibility test standard; if the temperature change test standard is not met, determining that the test machine does not meet the limit condition test standard; if the electromagnetic compatibility test standard is met, determining that the test machine meets the limit condition test standard; and if the electromagnetic compatibility test standard is not met, determining that the test machine does not meet the limit condition test standard. When it is determined that the limit condition test standard is not met, it is determined that the permanent magnet coupler does not meet the acceptance criteria, i.e., it is unqualified, and the subsequent test is not performed, and the test is ended directly.

[0063] Wherein, the overload running test is performed on the test prototype, and whether the test prototype meets the overload running test standard includes: controlling the test prototype to run under the rated torque, and gradually increasing the load to 3 times of the rated output torque, and controlling the test prototype to run continuously for 15s; judging whether the test prototype runs stably and has no step-out phenomenon; if the test prototype runs stably and has no step-out phenomenon, it is judged that the test prototype meets the overload running test standard, otherwise, it does not meet the overload running test standard.

[0064] Specifically, the overload running test is to verify the transmission characteristics of the permanent magnet coupler under the downstream load locked-rotor condition, and to meet the requirement of no slip. Specifically, the test prototype is run under the rated torque, the load is gradually increased (here, there is no strict limitation, generally, the rated torque is increased by 50% every 10s after the torque is stable) to 3 times of the rated output torque, and continuously runs for 15s, the running should be stable, no step-out performance, and no abnormal situation occurs.

[0065] High-temperature running test:

[0066] When the overload running test is completed and meets the overload running test standard, the high-temperature running test is performed on the test prototype. Specifically, since the temperature has a great influence on the performance of the permanent magnet material (such as neodymium iron boron), the permanent magnet material is easy to lose magnetic properties under high-temperature environment, thereby affecting the transmission performance of the permanent magnet coupler. This test project verifies the function and performance under high-temperature running environment, and evaluates the anti-demagnetization capability of the equipment under high-temperature environment. Based on this, the high-temperature running test is performed on the permanent magnet coupler. Specifically as follows:

[0067] The test prototype is placed in a high-low temperature test box, and the high-low temperature test box is gradually increased from the ambient temperature to a high temperature value T 高温 =70℃ at a temperature increasing rate of 1℃ / min (during this process, the test prototype remains in a non-working state). After reaching the thermal equilibrium (the control requirement of this project is that the temperature fluctuation is less than or equal to 0.5℃ within 15 minutes), the high temperature is maintained for 96 hours, and the test prototype is run under the rated torque during this period. After the heat preservation is completed, the temperature in the high-low temperature test box is restored to the normal temperature condition at a temperature decreasing rate of 1℃ / min. When the test is completed, the high-low temperature test box is maintained under normal atmospheric conditions for a sufficient time (2 hours), so as to reach the thermal equilibrium (the control requirement of this project is that the temperature fluctuation is less than or equal to 0.5℃ within 15 minutes) for at least 1 hour. Wherein, the high temperature value T 高温 =70℃ is a typical experimental value. The selection of T 高温 depends on the working environment temperature of the permanent magnet coupler during operation, generally, the highest temperature under normal environment is added with the working temperature rise, considering an 8℃ margin, and is selected upwardly according to GB / T 2423.2-2008 “Electrical and Electronic Products Environmental Testing Part 2: Test Methods Test B: High Temperature”.

[0068] After the high-temperature operation test is completed, the slip of the permanent-magnetic coupling, the temperature rise of the permanent-magnetic disc / conductor disc are measured according to the reference test method of step S1, and the same standards are used for judgment. If the corresponding slip standard and temperature rise standard are met, it is judged that the test sample meets the high-temperature operation test standard.

[0069] Temperature variation test:

[0070] The test is used to verify the ability of the permanent-magnetic coupling to withstand rapid changes in ambient temperature.

[0071] Specifically, the test sample is placed in a high-low temperature test chamber in a non-working state, the temperature in the high-low temperature test chamber is reduced to a low temperature value T 低温 =-10℃ at a cooling rate of (3±0.6)℃ / min, and maintained for 1h (during which the sample is operated at rated torque); the temperature in the test chamber is raised to 70℃ at a heating rate of (3±0.6)℃ / min, and maintained for 1h (during which the sample is operated at rated torque); the temperature in the test chamber is reduced to the test room ambient temperature at a cooling rate of (3±0.6)℃ / min. These operations form one cycle.

[0072] The test is carried out according to the above method, and the cycle is repeated 4 times, and 5 cycle tests are carried out.

[0073] After the test is completed, the temperature in the test chamber is adjusted to the test room ambient temperature at a temperature variation rate of (3±0.6)℃ / min.

[0074] The slip of the permanent-magnetic coupling, the temperature rise of the permanent-magnetic disc / conductor disc are measured according to the reference test method of step S1, and the same standards are used for judgment. If the corresponding slip standard and temperature rise standard are met, it is judged that the test sample meets the temperature variation test standard.

[0075] It should be noted that the aforementioned high temperature value T 高温 (70℃), T 低温 (-10℃) are typical experimental values. The selection of T 高温 , T 低温 depends on the operating ambient temperature of the permanent-magnetic coupling. Generally, T 高温 is selected according to GB / T 2423.2-2008 "Electrical and Electronic Products Environmental Testing Part 2: Test Methods Test B: High Temperature" 6.5.2 and above, by adding the operating temperature rise to the maximum temperature under normal environment, considering an 8℃ margin. T 低温 is selected according to GB / T 2423.1-2008 "Electrical and Electronic Products Environmental Testing Part 2: Test Methods Test A: Low Temperature" 6.6.1 and below, by the minimum temperature under normal environment.

[0076] Electromagnetic compatibility test:

[0077] Permanent magnet coupler is a passive mechanical device, generally there is no problem of conducted interference and power supply harmonic, under certain conditions (such as high power application or fault state) may produce a certain amount of electromagnetic interference (EMI). For the sake of safety, the electromagnetic interference level of permanent magnet coupler on the external environment is evaluated by this test. The specific as follows:

[0078] Run the test sample under rated torque, and perform radiation emission test according to GB 4824-2019 "Limitation of radio disturbance characteristics of industrial, scientific and medical equipment and measurement methods", measure the electromagnetic radiation disturbance level of the test sample, if it meets: 30MHz-1GHz frequency band, 10m measurement value <A class limit, it is determined that it meets the electromagnetic compatibility test standard, otherwise it does not meet the electromagnetic compatibility test standard.

[0079] Step S3: performance change over time test is performed on the test sample, and it is judged whether the test sample meets the performance change over time test standard, if it meets, step S4 is executed, if it does not meet, the identification test is ended.

[0080] In the embodiment of the application, step S3 specifically comprises: performing a vibration aging test on the test sample; after completing the vibration aging test, performing a related parameter test on the test sample to obtain test data; and judging whether the test sample meets the performance change over time test standard according to the test data. When it is judged that the performance change over time test standard is not met, it can be determined that the permanent magnet coupler does not meet the acceptance criteria, that is, it is unqualified, at this time, the subsequent test is not performed, and the test is directly ended.

[0081] In the embodiment of the application, the vibration aging test on the test sample comprises: performing a sweep frequency test on the test sample according to a set vibration condition; after completing the sweep frequency test, performing a resonance point endurance test on the test sample; and after completing the resonance point endurance test, completing the vibration aging test on the test sample. Optionally, in the embodiment of the application, the set vibration condition is: sweep frequency range 10Hz-500Hz, rate 1 octave / min, displacement amplitude (peak value) 0.075mm, acceleration amplitude (peak value) 1g, and total time 6h (2h per axis).

[0082] Specifically, in addition to high temperature, vibration is also an important factor affecting the magnetic property stability of permanent magnet material (such as neodymium iron boron). This test project verifies the vibration characteristics of the permanent magnet coupler and the anti-vibration ability in the expected transportation and use environment, and is used for vibration aging of the test sample before the anti-vibration test.

[0083] Sweep test: the prototype is operated at rated torque, and a continuous sinusoidal signal is used to excite the vibration test bench in three specified axial directions (i.e. X / Y / Z three orthogonal axial directions), the frequency is scanned at a logarithmic rate of 1 octave per minute, the scanning frequency range is 10 Hz to 500 Hz, and the resonance frequency point with an amplification of more than 2 in each axial direction is measured.

[0084] Resonance point durability test: 10 min durability test is performed on each resonance frequency point found in the resonance frequency exploration test using the same peak value as in the sweep test phase. If no resonance frequency is found, a test is performed at a fixed frequency of 100 Hz.

[0085] After completing the resonance point durability test, the appearance, air gap, slip, temperature rise of the permanent magnet disc / conductor disc of the permanent magnet coupler are measured according to the reference test method of step S1, and the judgment is made according to the same standard, if all meet the corresponding standard, it is determined that the performance change with time test standard is met, otherwise it is determined that the performance change with time test standard is not met.

[0086] Step S4: simulate the working condition test of the test prototype, and judge whether the test prototype meets the simulation working condition test standard, if it meets, execute step S5, if it does not meet, end the identification test.

[0087] In the embodiment of the application, step S4 specifically comprises: performing an anti-vibration test on the test prototype; after completing the anti-vibration test, detecting the test prototype to obtain a test detection result; and judging whether the test prototype meets the simulation working condition test standard according to the test detection result.

[0088] The anti-vibration test is to verify the operation function and performance of the permanent magnet coupler under the load corresponding to the safe shutdown earthquake (SSE). The test prototype adopts the same installation and connection mode as the actual site, and an anti-vibration support with a natural frequency greater than 33 Hz is selected for the test. The test adopts a multi-frequency wave artificial time history method, and the test response spectrum should consider a 10% margin on the basis of the floor seismic response spectrum of the installation position of the permanent magnet coupler. During and after the test, the prototype is operated at rated torque. The speed signal is connected out through a measurement circuit to detect the speed on both sides of the permanent magnet coupler prototype; sufficient acceleration, displacement, stress, and strain sensors are arranged at typical positions of the test prototype to monitor the input motion of the equipment and the response of the typical positions of the prototype. Specifically as follows:

[0089] Phase 1: resonance frequency exploration test.

[0090] Excite the vibration test bed in each of the principal axis directions (three orthogonal axial directions X / Y / Z). Perform a single axis sinusoidal sweep at a rate of 1 octave per minute from 1 Hz to 100 Hz to 1 Hz, with an input acceleration amplitude of at least 0.2g; or, alternatively, a random excitation method can be used, with an input acceleration amplitude of at least 1g. The random excitation test should be performed for at least 180s.

[0091] After the completion of the phase test, the test prototype is measured for the appearance, air gap, slip ratio, temperature rise of the permanent magnet disc / conductor disc according to the reference test method of step S1, and is judged according to the same standard. If all meet the corresponding standard, it is determined that the resonance frequency exploration test standard is met.

[0092] Phase 2: Run the reference seismic (OBE) test.

[0093] After meeting the resonance frequency control test standard, run the OBE test. Specifically as follows:

[0094] Perform 5 OBE tests on the three specified axial directions of the seismic test bed. The OBE test response spectrum (TRS) used in the test should envelop the OBE required response spectrum (RRS). The amplitude of the OBE required response spectrum used in the test is usually taken as 1 / 2 of the amplitude of the SSE required response spectrum, the damping ratio is selected as 2%, and the characteristics of the artificial time history curve are: the total duration of the signal is 30s; the minimum duration of the strong signal section is 20s.

[0095] Phase 3: Safety shutdown seismic (SSE) test.

[0096] After completing the OBE test, perform the SSE test. Specifically as follows:

[0097] Perform 1 SSE test on the three specified axial directions of the seismic test bed. The SSE test response spectrum (TRS) used in the test should envelop the SSE required response spectrum (RRS). The SSE required response spectrum used in the test has a damping ratio of 2%.

[0098] During the tests in the second and third phases, the test prototype needs to be in a normal working state, i.e., the operation should be smooth, without obvious abnormal noise and vibration. Alternatively, the slip ratio of the test prototype is tested, and the slip ratio meets the slip ratio standard of step S1. That is, in the second and third phases, the test prototype operates smoothly, without obvious abnormal noise and vibration, or the slip ratio meets the slip ratio standard, then it can be judged that the test prototype meets the simulation working condition test standard. When it is judged that the simulation working condition test standard is not met, it can be determined that the permanent magnet coupling does not meet the acceptance criteria, i.e., it is unqualified, at which time the subsequent test is not performed, and the test is directly ended.

[0099] Step S5: the reference performance of the test sample is retested, and whether the reference function characteristics of the test sample meet the acceptance criteria is checked, if yes, it is identified as qualified, if not, the identification test is ended.

[0100] Specifically, after the anti-vibration test is completed, the reference performance of the test sample is tested, that is, the tests in step S1 are repeated, the appearance, air gap, slip, temperature rise of the permanent magnet disc / conductor disc of the permanent magnet coupler of the test sample are measured according to the reference test method of step S1, and the same standard is used for judgment, if all meet the corresponding standard, it is determined that the test sample is qualified, otherwise, it is determined that it is unqualified, and the identification test is ended.

[0101] Reference Figure 2 The application also provides a permanent magnet coupler identification test system.

[0102] In this embodiment, as shown in the figure, the permanent magnet coupler identification test system comprises: Figure 2 The reference test unit 201 is used for performing reference tests on the test sample and determining whether the test sample meets the reference test standard.

[0103] The extreme working condition test 202 is used for performing extreme working condition tests on the test sample and determining whether the test sample meets the extreme working condition test standard.

[0104] The performance change test unit 203 is used for performing performance change over time tests on the test sample and determining whether the test sample meets the performance change over time test standard.

[0105] The simulated working condition test unit 204 is used for performing simulated working condition tests on the test sample and determining whether the test sample meets the simulated working condition test standard.

[0106] The performance retest unit 205 is used for performing reference performance retests on the test sample and checking whether the reference function characteristics of the test sample meet the acceptance criteria.

[0107] The application fills the gap of the lack of identification test procedures for such equipment in the current industry, provides a complete, detailed and logically clear test technical route, which can ensure the safe use of safety important permanent magnet couplers in nuclear power plants and buffer environments during the service life, provide technical guidance for the quality identification of subsequent safety important permanent magnet couplers, and lay a foundation for the field application of permanent magnet couplers in safety important scenes in nuclear power plants.

[0108] Specifically, the specific cooperation process between the units in the permanent magnet coupler identification test system can be referred to the above-mentioned permanent magnet coupler identification test method, which will not be repeated here.

[0109] Specifically, the specific cooperation process between the units in the permanent magnet coupler identification test system can be referred to the above-mentioned permanent magnet coupler identification test method, which will not be repeated here.

[0110] In addition, an electronic device of the present application includes a memory and a processor; the memory is configured to store a computer program; the processor is configured to execute the computer program to implement the method for identifying test of the permanent magnet coupler according to any one of the above. Specifically, according to the embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, the embodiments of the present application include a computer program product including a computer program carried on a computer readable medium, the computer program including program code for executing the method shown in the flowchart. In such embodiments, the computer program can be downloaded and installed by the electronic device and executed to perform the above-mentioned functions defined in the method of the embodiments of the present application. The electronic device in the present application can be a notebook, a desktop, a tablet computer, a smart phone, etc. terminal, or a server.

[0111] In addition, a storage medium of the present application has a computer program stored thereon, and the computer program is executed by a processor to implement the method for identifying test of the permanent magnet coupler according to any one of the above. Specifically, it should be noted that the storage medium of the present application described above can be a computer readable signal medium or a computer readable storage medium or any combination of the above two. The computer readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present application, the computer readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer readable program code. Such a propagated data signal can take various forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above. The computer readable signal medium can also be any computer readable medium other than the computer readable storage medium, which can send, propagate or transmit a program for use by or in conjunction with an instruction execution system, device or apparatus. The program code contained in the computer readable medium can be transmitted by any suitable medium, including but not limited to a wire, a cable, an RF (radio frequency) or the like, or any suitable combination of the above.

[0112] The computer readable medium described above can be included in the electronic device described above; or can exist separately and not be assembled into the electronic device.

[0113] The various embodiments described in the specification are progressive in nature, and each embodiment highlights the differences from other embodiments. The same or similar parts between the embodiments can be mutually referred to. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method part.

[0114] The skilled person can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been described in a general manner in the above description. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0115] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein can be directly implemented by hardware, a software module executed by a processor, or a combination of both. The software module can be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0116] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it accordingly, and cannot limit the protection scope of the present application. Any equivalent changes and modifications made within the scope of the claims of the present application shall be within the scope of the claims of the present application.

Claims

1. A method for evaluating a permanent magnet coupler, characterized in that, Includes the following steps: Step S1: Perform a benchmark test on the test prototype and determine whether the test prototype meets the benchmark test standard. If it does, proceed to step S2; otherwise, end the qualification test. Step S2: Conduct extreme working condition tests on the test prototype and determine whether the test prototype meets the extreme working condition test standards. If it does, proceed to step S3; otherwise, end the qualification test. Step S3: Conduct a performance change test on the test prototype over time, and determine whether the test prototype meets the performance change test standard over time. If it meets the standard, proceed to step S4; otherwise, end the evaluation test. Step S4: Conduct simulated working condition tests on the test prototype and determine whether the test prototype meets the simulated working condition test standards. If it meets the standards, proceed to step S5; otherwise, end the evaluation test. Step S5: Retest the benchmark performance of the test prototype and check whether the benchmark functional characteristics of the test prototype meet the acceptance criteria. If they meet the criteria, the prototype is qualified; otherwise, the qualification test ends.

2. The qualification test method for permanent magnet couplers according to claim 1, characterized in that, Step S1 specifically includes: The air gap of the test prototype was measured to obtain air gap measurement data; Determine whether the test prototype meets the air gap standard based on the air gap measurement data; If the air gap standard is met, the slip rate of the test prototype is measured to obtain slip rate measurement data; if the air gap standard is not met, the test prototype is judged to not meet the benchmark test standard. Determine whether the test prototype meets the slip rate standard based on the slip rate measurement data; If the slip ratio standard is met, the temperature of the permanent magnet disk / conductor disk is measured on the test prototype to obtain the temperature data of the permanent magnet disk / conductor disk; if the slip ratio standard is not met, the test prototype is judged to not meet the benchmark test standard. Determine whether the test prototype meets the temperature rise standard based on the temperature data of the permanent disk / conductor disk; If the temperature rise standard is met, the test prototype is deemed to meet the baseline test standard; if the temperature rise standard is not met, the test prototype is deemed to not meet the baseline test standard.

3. The qualification test method for permanent magnet couplers according to claim 1, characterized in that, Step S2 specifically includes: An overload operation test was performed on the test prototype, and it was determined whether the test prototype met the overload operation test standards. If the overload operation test standard is met, a high-temperature operation test is performed on the test prototype, and it is determined whether the test prototype meets the high-temperature operation test standard; if the overload operation test standard is not met, it is determined that the test prototype does not meet the extreme working condition test standard. If the high-temperature operation test standard is met, a temperature change test is conducted on the test prototype, and it is determined whether the test prototype meets the temperature change test standard; if the high-temperature operation test standard is not met, it is determined that the test prototype does not meet the extreme working condition test standard. If the temperature change test standard is met, then an electromagnetic compatibility test is performed on the test prototype, and it is determined whether the test prototype meets the electromagnetic compatibility test standard; if the temperature change test standard is not met, then it is determined that the test prototype does not meet the extreme operating condition test standard. If the electromagnetic compatibility test standard is met, the test prototype is deemed to meet the extreme operating condition test standard; if the electromagnetic compatibility test standard is not met, the test prototype is deemed to not meet the extreme operating condition test standard.

4. The qualification test method for permanent magnet couplers according to claim 3, characterized in that, The process of performing an overload operation test on the test prototype and determining whether the test prototype meets the overload operation test standards includes: The test prototype was controlled to operate at the rated torque, and the load was gradually increased to three times the rated output torque, and the test prototype was controlled to run continuously for 15 seconds. Determine whether the test prototype operates smoothly and without loss of synchronization; If the test prototype operates smoothly without any loss of synchronization, it is determined that it meets the overload operation test standard; otherwise, it does not meet the overload operation test standard.

5. The qualification test method for permanent magnet couplers according to claim 1, characterized in that, Step S3 specifically includes: Vibration aging tests were conducted on the test prototype. After the vibration aging test is completed, the relevant parameters of the test prototype are tested to obtain test data; Based on the test data, determine whether the test prototype meets the performance change over time test standard.

6. The qualification test method for permanent magnet couplers according to claim 5, characterized in that, The vibration aging test of the test prototype includes: The test prototype was subjected to a frequency sweep test according to the set vibration conditions; After completing the frequency sweep test, the test prototype was subjected to a resonance point durability test. After completing the resonance point durability test, the vibration aging test of the test prototype is completed.

7. The qualification test method for permanent magnet couplers according to claim 1, characterized in that, Step S4 specifically includes: The test prototype was subjected to a seismic test; After the seismic test is completed, the test prototype is inspected to obtain the test results; Based on the test results, determine whether the test prototype meets the simulated working condition test standards.

8. A qualification test system for permanent magnet couplers, characterized in that, include: A benchmark test unit is used to perform benchmark tests on the test prototype and determine whether the test prototype meets the benchmark test standards. Extreme condition test, used to conduct extreme condition tests on the test prototype and determine whether the test prototype meets the extreme condition test standard; The performance change test unit is used to conduct a performance change test on the test prototype over time and to determine whether the test prototype meets the performance change test standard over time. The simulated working condition test unit is used to conduct simulated working condition tests on the test prototype and determine whether the test prototype meets the simulated working condition test standards. The performance retesting unit is used to retest the benchmark performance of the test prototype and check whether the benchmark functional characteristics of the test prototype meet the acceptance criteria.

9. A storage medium, characterized in that, The storage medium stores a computer program adapted for loading by a processor to perform the steps of the qualification test method for a permanent magnet coupler as described in any one of claims 1 to 7.

10. An electronic device, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps of the qualification test method for a permanent magnet coupler as described in any one of claims 1 to 7 by calling the computer program stored in the memory.

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