Grid plate sealing structure with self-adjusting grid plate stacking gap

Abstract

The invention discloses a grid plate sealing structure with a self-adjusting grid plate stacking gap. The grid plate sealing structure comprises grid plates, one side faces of the grid plates are a machining face, a micro-channel is machined on the machining face, a plurality of micro-textures are machined on the machining face in the direction of the micro-channel, the multiple grid plates are installed in an installation groove in a stacked mode, the machining faces of the multiple grid plates face the same direction, and therefore, the grid plate sealing structure with a surface runner is formed. According to the grid plate sealing structure with the self-adjusting grid plate stacking gap, the gas film rigidity between the grid plates and the stability of the grid plates can be enhanced through the micro-channels and the micro-textures on the machining faces of the grid plates, and the working performance is good under the condition that the pre-pressure or the friction coefficient is large.

Description

technical field [0001] The invention relates to the technical field of grid plate sealing, in particular to a grid plate sealing structure with self-adjusting grid stack gap. Background technique [0002] The grid seal structure is a linear sliding seal used for variable flow channels, and it is a high-temperature dynamic seal structure required in many positions of future hypersonic vehicles. The grid-type sealing structure has good fit and low leakage, which is the main sealing technology. The gap self-adjusting grid sealing structure of the prior art processes steps on one side of the grid. On the one hand, the large depression at the corner may tilt under the action of dynamic force, forming a divergent grid gap. On the other hand, it produces The rigidity of the gas film is not large enough, and it is easy to fail when the pre-pressure is large or the friction coefficient is large. Therefore, the grid plate in the prior art has the problem of poor working performance ...

AI Technical Summary

Problems solved by technology

The gap self-adjusting grid sealing structure of the prior art processes steps on one side of the grid. On the one hand, the large depression at the corner may tilt under the action of dynamic force, forming a divergent grid gap. On the other hand, it produces The rigidity of the gas film is not large enough, and it is easy to fail when the pre-pressure is large or the friction coefficient is large

Therefore, the grid plate of the prior art has the problem of poor working performance under the action of relatively large frictional force and dynamic force.

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