Labyrinth Piston Ring

Abstract

The invention provides a labyrinth type piston ring. Two small blind holes of equal size are symmetrically and evenly distributed at the two ends of an opening of an outer ring surface of the piston ring and are used when the piston ring is mounted; a seal at the opening of the piston ring adopts a manner that teeth at the two ends of the piston ring are mutually meshed; the sizes of radial meshing clearances among the teeth at the two ends of the piston ring are equal to the sizes of clearances at an opening of the existing piston ring, and the radial meshing clearances of the teeth at the two ends of the piston ring are far greater than circumferential meshing clearances of the teeth at the two ends of the piston ring; the teeth of the piston ring can be of equal height and equal width, of equal height and different widths, of different heights and equal width, or of different heights and different widths; the sizes of the radial meshing clearances of the teeth at the two ends of the piston ring are equal; and the more the number of the meshing teeth of the piston ring is, the better the seal is. Thus, the labyrinth type seal is formed by the radial meshing clearances and the circumferential meshing clearances of the mutually-meshed teeth at the two ends of the piston ring; and since an oil film formed by lubricating oil exists among a piston, a cylinder and the piston ring, a compound seal is formed by the oil film seal and the labyrinth type seal and the function of sealing the piston ring is fully realized.

Description

technical field [0001] The field that the present invention relates to is: the piston ring field of reciprocating engine, steam turbine. Background technique [0002] In the prior art, the leakage, gas and oil leakage at the opening of the piston ring not only affects the sealing effect, but also seriously affects the energy conversion efficiency, resulting in serious energy waste, environmental pollution, and low economic benefits. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a labyrinth piston ring in view of the current state of the art above. The beam shrinkage effect, the technical solution adopted by the present invention to solve the above technical problems is: a labyrinth piston ring, two small blind holes of equal size are symmetrically distributed at both ends of the outer ring surface of the piston ring, and are used for piston rings. Used during installation; the seal at the opening of the piston...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, due to the leakage at the opening of the piston ring, gas and oil leakage not only affects the sealing effect, but also seriously affects the energy conversion efficiency, resulting in serious waste of energy, environmental pollution, and low economic benefits.

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