A technologically advanced The valve structure is compact, smooth operation, good sealing performance, long service life, the deployment of intelligent actuators, enabling operational automation. Two structural features and technical difficulties Structural features: 1 pressure-bearing components for thick welded steel plate structure. 2 parallel double gate metal seal structure, sealing surface surfacing cemented carbide. When the valve is open, the sealing pair is frictionless. 3 uses disc spring storage mechanism and wedge mechanism to ensure flexible and reliable valve movement. 4 configuration of intelligent actuators, to achieve operational automation. Technical difficulties: a body and other major structural parts are welded with ultra-thick steel plate, the primary problem is to solve the weld penetration, and structural components without distortion technology. 2 To improve the sealing surface hardness and wear resistance, the valve seat and the gate seal surface, to solve the problem of large area surfacing carbide. 3 Refined after the valve seat and body welding, due to the weld close to the sealing surface, a slight deformation after welding, a direct impact on the sealing performance of the valve. 4 guide plate is made of cast iron thin plate, casting quite difficult. 6 The valve built-in disc spring storage mechanism, the valve is closed, the disc spring compression storage group, the savings of energy to open the valve quickly and reliably. Disc spring group in 415 ~ 593 ℃ long-term work under high temperature, the choice of materials is essential. The scope of the three products Parallel dual-plate crack gas valve, suitable for pyrolysis gas containing cokes at 415 ~ 593 ℃ long-term use.
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