How to avoid the three major mistakes in the use of electric butterfly valve for generator set damping butterfly valve?
With the increase of noise pollution, many factories and hotels have purchased electric butterfly valves for damping butterfly valves of generator sets, but they will encounter various doubts during use. I summarized five misunderstandings here and shared them with my friends. The selection of electric butterfly valve of the first generator and the selection of electric butterfly valve of damping butterfly valve of the generator set are very important, so there should be no carelessness. First of all, the electric butterfly valve of the damping butterfly valve of the generator set is to reduce or eliminate the periodic vibration or instantaneous impact caused by the irregular flow of the medium, wind force, water hammer (or steam hammer), earthquake and other reasons of the pipeline through the valve, the rigidity of the butterfly valve and the initial force of the butterfly valve precompression, which can improve the natural vibration frequency of the entire pipeline system, It shall be kept away from the pipeline vibration frequency caused by external interference, so as to avoid pipeline resonance and reduce the additional stress caused by pipeline vibration. The selection of the specifications of the electric butterfly valve for the damping butterfly valve of the generator set depends on the magnitude of the anti vibration force required to prevent pipeline vibration.
If the required anti vibration force can be calculated through pipeline dynamic analysis based on the quality, stiffness and periodic or impact force of the pipeline, the specification of the valve butterfly valve shall be selected according to the calculated accurate value and the initial force of butterfly valve preloading shall be determined. Otherwise, the specification of electric butterfly valve for damping butterfly valve of generator set can be selected according to the nominal diameter of pipeline. Calculate the total operating weight of the equipment: the operating weight after the sum of the static weight of the equipment and the counterweight times the safety factor (usually 1.3). The electric butterfly valve shall be selected according to the overall size of the equipment. Generally, the maximum distance between electric butterfly valves should not exceed 2m. If the equipment base is irregular, electric butterfly valves should also be arranged according to the equipment weight and stress distribution. If the equipment is biased, the electric butterfly valve shall be unevenly distributed. The total operating weight of the equipment is divided by the number of electric butterfly valves to obtain the load of each electric butterfly valve. Select the appropriate model of electric butterfly valve according to the calculated load, based on the principle of approaching the optimal load of electric butterfly valve for damping butterfly valve of generator set (generally, the optimal load of electric butterfly valve for damping butterfly valve of generator set is slightly greater than the load of electric butterfly valve to reduce fatigue of electric butterfly valve.