Cooling shaft piston

Abstract

The invention belongs to the field of reciprocating compressor accessories, and particularly relates to a cooling shaft piston. The cooling shaft piston comprises a piston body (2), a piston rod body(5), a first sealed double compartment (13) and a second sealed double compartment (14), wherein the piston body (2) comprises a front semi-piston body (201) and a rear semi-piston body (202); an upper piston body cavity (22) and a lower piston body cavity (23) are symmetrically arranged inside the piston body (2) in an up-and-down sequence; the first sealed double compartment (13) and the secondsealed double compartment (14) are arranged on the right side of the piston body (2); and the piston rod body (5) passes through the first sealed double compartment (13) and the second sealed double compartment (14) and movably cooperates with the first sealed double compartment (13) and the second sealed double compartment (14). According to the cooling shaft piston, multiple paths of circulationof a cooling medium can be formed in the piston body, the piston rod body, the first sealed double-compartment and the second sealed double-compartment, so that internal cooling inside a piston connecting rod is realized, and high cooling efficiency and low production cost can be achieved.

Description

technical field [0001] The invention belongs to the field of accessories for reciprocating compressors, in particular to a cooling shaft piston. Background technique [0002] During the design process of reciprocating compressors, the cooling design of the piston is very important. Traditional piston cooling methods such as free spray cooling without oil chamber, serpentine tube circulation cooling, and vibration cooling cannot achieve the ideal cooling effect. Cooling means heat loss, but this loss is necessary to keep the pistons working properly. If the piston is overcooled, it will have the following adverse effects: 1) too much heat loss, reducing the working efficiency of the piston; 2) too large temperature difference, too high thermal stress; 3) increasing the amount of coolant, increasing the cost. Moreover, the traditional piston cooling method is mostly external cavity cooling, which has low cooling efficiency and high cooling cost. Contents of the invention ...

AI Technical Summary

Problems solved by technology

Traditional piston cooling methods such as free spray cooling without oil chamber, serpentine tube circulation cooling, and vibration cooling cannot achieve the ideal cooling effect

Cooling means heat loss, but this loss is necessary to keep the piston working properly

If the piston is overcooled, it will have the following adverse effects: 1) too much heat loss, reducing the working efficiency of the piston; 2) too large temperature difference, too high thermal stress; 3) increasing the amount of coolant, increasing the cost

Moreover, the traditional piston cooling method is mostly external cavity cooling, the cooling efficiency is low, and the cooling cost is high

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