Test the ordinary electric butterfly valve as a comprehensive study of benchmark performance. For the electric butterfly valve and the internal external height valve of the valve and the dynamic stiffness of a loading frequency curve, the load displacement curve of the ordinary electric butterfly valve height measurement, through the analysis and comparison of the research results, the following conclusions are drawn:
(1) Since the performance curves of the two types of electric butterfly valves have the same changing trend and are consistent with the actual working conditions, it is feasible to test the performance of internal electric butterfly valves based on the performance test method of ordinary electric butterfly valves. It can be seen that the performance test method of the built-in electric butterfly valve of the high valve is consistent with that of the ordinary electric butterfly valve.
(2) Since the height valve is installed in the electric butterfly valve, the exhaust port cannot be closed. The load displacement curve of the air valve installed in the height valve is different from that of the ordinary electric butterfly valve. It is a pressure transformation curve. However, the performance test method of high valve electric butterfly valve is closer to the actual working condition, and the results are more reliable.
(3) In view of the rationality of the above performance test methods, other test methods of the built-in electric butterfly valve of the high-pressure valve, such as driving test, blasting test and fatigue test, are studied for reference.