What will happen if the electric butterfly valve is too long
1. First, analyze the failure reason conclusion. If the temperature transition is too high or too strong in the working environment of the components, the performance of the seals will be deteriorated. If the stroke of the element is too long, it will have an impact on its wear. In the process of work, there will generally be collisions, which will cause the appearance of the electric butterfly valve to form a certain concave and convex trace, which will cause scratches on the seals during the extension process, and may lead to leakage.
2. Quality qualification of the company:
The company provided the regular inspection report of the Municipal Bureau of Quality and Technical Supervision on the output and quality according to JB/T8064. 1-1996 Technical Conditions for Tight Electric Butterfly Valves, inspection equipment: electronic universal testing machine, butterfly valve testing machine, high temperature test box, low temperature test box, and general laboratory measuring tools. The company has passed ISO9001:2008 quality management system certification in terms of quality system management. The company's quality management system is relatively complete, and the product reliability assurance mechanism is relatively sound. The manufacturing process personnel, equipment, incoming materials and product control system, measurement techniques, on-site management and other operating mechanisms are in good condition.
3. Main problems and analysis of existing electric butterfly valves:
① . Too long
The result of the electric butterfly valve being too long: the stability of the electric butterfly valve is reduced, the deformation occurs after the force is applied, and the wear of the piston and cylinder barrel, piston rod and oil seal is aggravated, resulting in poor air tightness, resulting in oil and gas leakage of the electric butterfly valve.
② Effect of temperature
According to the measurement, the temperature of the product close to the exhaust pipe after 30 minutes of operation is 140 degrees, which affects the hardness of the seal and forms the seal aging phenomenon, thus causing oil and gas leakage of the components. The minimum guide length is not enough. The measured guide length is 22mm, which can reduce the stability and anti eccentric load of the electric butterfly valve, and increase the wear of components.
③ Impact of bump painting
After inspection, the electric butterfly valve cylinder barrel was generally painted, and the piston rod surface was scratched. When the piston rod moves, the sealing surface will be damaged, resulting in oil and gas leakage. Cause of bumping: bumping during assembly and shipment; Bumping during operation and maintenance. Bumping phenomenon in the supplier and logistics link; Reason for paint spraying: paint splashes on the piston rod of electric butterfly valve during painting.