Air cylinder and cylinder head matching body

Abstract

The invention discloses an air cylinder and cylinder head matching body which comprises a cylinder block, an air cylinder liner, an air cylinder head and a seal ring, wherein the air cylinder liner is arranged in an air cylinder hole of the cylinder block; the air cylinder head is fixedly connected with the cylinder block through cylinder head bolts; and the seal ring is arranged in the air cylinder liner and matched with an inner side line of a matching surface of the air cylinder liner and the air cylinder head in a sealed manner. The air cylinder and cylinder head matching body is simple in structure, greatly eliminates a bending moment of pre-tightening forces of the cylinder head bolts on the air cylinder head, and greatly increases the capability of the air cylinder head of bearing the pressure of gas in a cylinder.

Description

technical field [0001] The invention relates to the field of engines and gas compressors, in particular to a cylinder head matching body. Background technique [0002] The cylinder head and the cylinder of the valve train of the traditional piston engine and piston gas compressor are usually connected by the cylinder gasket and the cylinder head bolts. This structure has been widely used, but because the cylinder gasket is easy to damage, and for To ensure the tightness, the pre-tightening force of the cylinder head bolts must be at a high level, so the cost of effective sealing between the cylinder and the cylinder head is greatly increased. Not only that, but with the continuous increase of the explosion pressure of the engine and the increase of the pressure of the piston gas compressor, the connection method of the traditional cylinder head gasket and cylinder head bolts can no longer meet the requirements. One of the main reasons is that when the pre-tightening force o...

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Problems solved by technology

[0002] The cylinder head and the cylinder of the valve train of the traditional piston engine and piston gas compressor are usually connected by the cylinder gasket and the cylinder head bolts. This structure has been widely used, but because the cylinder gasket is easy to damage, and for To ensure the tightness, the pre-tightening force of the cylinder head bolts must be at a high level, so the cost of effective sealing between the cylinder and the cylinder head is greatly increased

Not only that, with the continuous increase of the explosion pressure of the engine and the increase of the pressure of the piston gas compressor, the connection method of the traditional cylinder head gasket and cylinder head bolts can no longer meet the requirements

One of the main reasons is that when the pre-tightening force of the cylinder head bolts is high, the cylinder head is also subjected to a large bending moment, and the direction of the force exerted by the bending moment on the cylinder head is related to the gas pressure in the cylinder. The force generated by the cylinder head is consistent. In other words, in this structure, the cylinder head not only bears the action of the gas pressure in the cylinder, but also bears the action of the bending moment generated when the cylinder head bolts are pre-tightened. It greatly reduces the cylinder head's ability to withstand the explosion pressure in the cylinder

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