Ultra-high pressure floating ball valve seat structure

Abstract

This utility model provides a valve seat structure for an ultra-high pressure floating ball valve, relating to the technical field of forged steel high-pressure floating ball valves. It includes a valve body with a ball core inside, and an elastic valve seat on the outer side of the ball core. An inner diameter limiting groove is formed between the elastic valve seat and the valve body. In this design, the elastic valve seat has a large-angle V-shaped sealing surface between it and the ball core. Under low-pressure operating conditions, the contact surface between the elastic valve seat and the ball core is the V-shaped sharp corner. The sealing surface between the elastic valve seat and the valve body has a narrow-plane L-shaped structure. Under low-pressure operating conditions, the contact surface deforms more under the pressure of the medium, increasing the contact area. This ensures that the sealing specific pressure between the elastic valve seat, the ball core, and the valve body remains essentially the same as under low pressure, guaranteeing that the performance of the elastic valve seat remains essentially unchanged and its basic strength does not change drastically.

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