A Mechanical Seal Structure Suitable for Fuel Cooling Turbine

Abstract

The application discloses a mechanical seal structure suitable for fuel cooling turbines, and relates to the field of mechanical seals. It is used for the oil-air seal between the rotary and static systems of the oil-immersed cooling bearing structure under the condition of high temperature and high speed, and solves the problem of high temperature in the working environment of the bearing. It includes a fixed base, a movable support, a rubber spring, a static friction ring, a dynamic friction ring and a baffle. The fuel oil for cooling is injected into the bearing cavity through the oil delivery pipe, and flows around the baffle plate to enhance the flow and heat exchange in the internal cavity area of ​​the friction dynamic and static rings. It flows into the bearing ring cavity along the interlayer between the sleeve and the baffle, and finally flows out of the bearing cavity. The rubber spring component is used in the mechanical seal structure, which can not only achieve a good sealing effect, but also provide the axial force required for the pre-tightening of the frictional static and dynamic rings by pressing and fitting with the end wall. Therefore, the mechanical seal structure has the characteristics of high working temperature and speed limit, good cooling and heat exchange effect, low bearing working temperature, and simple and reliable structure.

Description

technical field [0001] The present application relates to the field of mechanical seals, in particular to a mechanical seal structure with a rubber spring and a simple structure suitable for high-temperature and high-speed fuel cooling turbines. Background technique [0002] The mechanical seal, that is, the end face seal, is an axial end face sealing device that uses the elastic force preload of the elastic element and the pressure difference of the medium to compress the end face of the moving ring and the end face of the static ring to achieve the sealing effect. It relies on the relative sliding friction of the closely fitted dynamic and static ring end faces and auxiliary sealing elements to prevent the leakage of media on both sides. As an indispensable key component in fluid machinery and power machinery, the performance of mechanical seals determines the vital parameters of the machine such as safety, reliability, durability, and efficiency. [0003] For power gener...

AI Technical Summary

Problems solved by technology

The intrusion of stagnant high-temperature air brought about by hypersonic speed will cause the turbine rotor disc cavity to be in a high-temperature environment, which will easily cause the conventional mechanical seal auxiliary sealing element - the O-ring rubber ring to fail, and eventually lead to poor sealing effect or even seal damage. Serious consequences

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