Impeller type pressure-adjustable mechanical sealing component

Abstract

The invention discloses an impeller type pressure-adjustable mechanical sealing component. The impeller type pressure-adjustable mechanical sealing component comprises a shaft sleeve, a movable ring arranged on the peripheral surface of the shaft sleeve, a stationary ring propped against the head face of the movable ring, and a mechanical sealing shell for holding the shaft sleeve, movable ring and stationary ring, a cooling spacer fluid passage is formed between the outer peripheral surface of the movable ring and the inner peripheral surface of the mechanical sealing shell, on the cooling spacer fluid passage , a cooling spacer fluid drive impeller is arranged on the outer peripheral surface of the movable ring, and a volute space which surrounds the cooling spacer fluid drive impeller and is matched with the cooling spacer fluid drive impeller is formed on the mechanical sealing shell. The impeller rotates by means of the high-speed rotation of the movable ring, the centrifugal force generated by the movable impeller can be effectively used for driving the cooling spacer fluid to quickly flow to timely lubricate the movable ring and stationary ring, and the cooling spacer fluid can effectively cool the movable ring and stationary ring.

Description

technical field [0001] The invention relates to a mechanical sealing component, in particular to an impeller type pressure-adjustable mechanical sealing component. Background technique [0002] Currently, in centrifuges, centrifugal pumps, compressors, or power generation systems connecting steam turbines to generators, mechanical seals are commonly used to seal drive shafts to prevent fluid leakage in these devices. [0003] For example, in a power generation system, in order to prevent the gas from driving the steam turbine from polluting the generator, the gas-driven steam turbine is usually connected to the generator through a mechanical seal. The moving ring and the static ring matched with the moving ring, the cooling spacer fluid flows between the moving ring, the static ring and the shell, so that the sliding between the moving ring and the static ring can be lubricated and sealed, and it can be taken away The heat generated by the friction between the moving ring a...

AI Technical Summary

Problems solved by technology

In addition, when the tetrafluoroethylene gasket is used, due to the centrifugal force generated by the high-speed rotation of the moving ring and the high temperature of the moving ring, the tetrafluoroethylene gasket will creep, so that the moving ring will move in the axial direction. This creates a leak

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