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Installation structure of air cylinder drain valve of engine

A technology for engine cylinders and installation structures, applied in the direction of engine components, machines/engines, cylinders, etc., can solve problems such as poor reliability and poor cooling of drain valves, and achieve improved reliability and service life, good sealing, and contact stress Keep the effect

Pending Publication Date: 2018-12-18
HENAN DIESEL ENGINE IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the cylinder drain valve is directly installed on the cylinder head without passing through the cooling water cavity, which will cause poor cooling of the drain valve during work and poor reliability

Method used

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  • Installation structure of air cylinder drain valve of engine
  • Installation structure of air cylinder drain valve of engine
  • Installation structure of air cylinder drain valve of engine

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0017] Such as figure 1 As shown, an engine cylinder drain valve installation structure includes a cylinder head 1 provided with a cooling water chamber, a drain valve protection pipe 3 is arranged in the cooling water chamber of the cylinder head 1, and an O-shaped sealing ring 5 passes through the upper part of the drain valve protection pipe 3 It is in sealing contact with the top wall of the cooling water chamber, and the lower part of the drain valve protection pipe 3 passes through the top wall of the cooling water chamber and is in sealing contact with the bottom wall of the cooling water chamber. The drain valve protection pipe 3 is installed with a drain valve 2 and a valve stem of the drain valve 2 Pass through the drain valve protective pipe 3 and be fixedly connected to the bottom wall of the cooling water cavity of the cylinder head 1 an...

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Abstract

The invention relates to an installation structure of an air cylinder drain valve of an engine. The installation structure of the air cylinder drain valve of the engine comprises an air cylinder cover, wherein a cooling water cavity is formed in the air cylinder cover. A drain valve protective pipe is arranged in the cooling water cavity of the air cylinder cover, the upper portion of the drain valve protective pipe makes contact with the top wall of the cooling water cavity in a sealing mode through an O-shaped sealing ring, and the lower portion of the drain valve protective pipe penetratesthrough the top wall of the cooling water cavity and makes contact with the bottom wall of the cooling water cavity in a sealing mode. The drain valve is installed in the drain valve protective pipe.A valve rod of the drain valve penetrates through the drain valve protective pipe, is fixedly connected with the bottom wall of the cooling water cavity of the air cylinder cover, fixes the drain valve protective pipe through a locking washer, and communicates with a combustion chamber which is formed below the air cylinder cover. The installation structure of the air cylinder drain valve of the engine has the beneficial effects that the drain valve on the air cylinder cover is installed by penetrating through the cooling water cavity of the air cylinder cover, and therefore the cooling problem of the drain valve is solved, the working reliability of the drain valve is improved, and the service life of the drain valve is prolonged.

Description

technical field [0001] The invention belongs to the technical field of engine component design, and mainly relates to an engine cylinder drainage valve installation structure. Background technique [0002] When the submersible diesel engine starts, there will be water in the combustion chamber. It is necessary to design a cylinder drain valve installed on the cylinder head, which has the function of draining the cylinder before the diesel engine starts. [0003] In the prior art, the cylinder drain valve is directly installed on the cylinder head without passing through the cooling water chamber, which will result in poor cooling of the drain valve during work and poor reliability. Contents of the invention [0004] The object of the present invention is to propose an engine cylinder drain valve installation structure, the principle of which is to solve the problem by designing and installing the drain valve protection pipe in the cooling water chamber of the cylinder head...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B77/08F02F1/40
CPCF02B77/08F02F1/40
Inventor 丁艳刘文斌吴亚龙杨云辉
Owner HENAN DIESEL ENGINE IND
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