Main inspection methods of electric butterfly valve?
Today, the manufacturer of electric butterfly valve will share with you the testing method of shock absorber: the shock absorption performance of shock absorber should be verified through the shock absorption test. Damping experiment is usually stopped only when the shock absorber is newly designed and manufactured, and it is not necessary to stop the experiment of shock absorber one by one after mass consumption; Just stop the typing experiment. However, for particularly important shock absorbers, or shock absorbers that need to stop conditioning in the shock absorption experiment before reaching the technical request, they should be tested one by one. It is better to stop the vibration reduction experiment on the whole machine, so the experimental condition is the theoretical working condition; The vibration reduction experiment can also be stopped on a special vibration reduction test bench, that is, to simulate the theoretical working conditions, artificially manufacture the vibration source, and compare the difference between the shock absorber without the shock absorber and the shock absorber installed, so as to evaluate the advantages and disadvantages of the shock absorber.
According to different situations, various vibration excitation methods can be used to artificially produce vibration sources, such as the use of eccentric wheel rotation to drive the sliding block to generate reciprocating displacement excitation, the use of centripetal force generated by unbalanced rotor excitation, the use of compressed air blower excitation, the use of loudspeaker excitation, the use of electromagnetic induction excitation, or the use of special vibration table excitation, etc. The parameters to be measured during vibration test include frequency, amplitude, velocity, acceleration, etc., and sometimes the stress or strain of some parts of the machine. Assuming that the vibration law follows a sine function (such as the vibration caused by the rotor imbalance), the speed and acceleration can be calculated by measuring the amplitude and frequency.
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