A sealing connection device for fuel metal pipe of diesel engine

A connection device, diesel engine technology, applied in the direction of threaded connection, pipe/pipe joint/pipe fitting, mechanical equipment, etc., can solve the problems of inability to meet sealing performance, broken joints, and weak connections.

Inactive Publication Date: 2011-11-30
CHANGZHOU CHANGRUI TIANLI POWER MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the sealing of the fuel pipeline, some sealing structures need to be adopted. The existing sealing structure simply adds a sealing ring, which cannot mee

Method used

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  • A sealing connection device for fuel metal pipe of diesel engine
  • A sealing connection device for fuel metal pipe of diesel engine

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0012] see figure 1 , a sealed connection device for a diesel engine fuel metal pipe, comprising a pipe nut 2 installed on a low-pressure fuel metal pipe 1 of a diesel engine, and a pipe joint 3 matched with the pipe nut 2, the pipe nut is screwed on the metal oil pipe and the metal oil pipe A limit block 5 for limiting the position of the pipe nut is provided, and the right end surface of the pipe nut 2 is provided with an axial connection groove 4, and the inner groove wall of the connection groove is provided with a connection thread, and the connection end of the pipe joint is located in the connection groove and Threads matching the connecting threads are provided, so that the pipe joint is firmly connected to the pipe nut through two matching threads. The connecting end of the pipe joint and the bottom end of the connecting groove are pr...

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PUM

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Abstract

The invention relates to a sealing connection device for a diesel engine fuel metal pipe, which comprises a pipe nut installed on the low-pressure fuel metal oil pipe of a diesel engine and a pipe joint matched with the pipe nut. A connecting thread is arranged in the groove, and the connecting end of the pipe joint is located in the connecting groove and is provided with a thread matched with the connecting thread. The invention belongs to the sealing structure of the end surface of the rubber sleeve, and adopts a straight-through pipeline connection structure, that is, a pipe nut and a sealing rubber are assembled on the metal oil pipe to connect with the pipe joint, and the space between the pipe nut and the pipe joint is sealed by compressing the sealing rubber. Meet the requirements of sealing performance, the connection is firm and there will be no oil leakage due to the breakage of the joint of the metal pipe and oil pipe.

Description

technical field [0001] The invention relates to a connection device of a liquid pipe, in particular to a sealing connection device of a fuel metal pipe of a diesel engine. Background technique [0002] In the low-pressure fuel pipeline of a diesel engine, metal pipes, rubber pipes or nylon pipes are generally used, and the seals of the connecting parts are widely used in the structure of hinged pipe joints, sealing gaskets and hinged bolts, or the spherical surface of the spherical screw-in pipe joint. , Cone sealing structure. In order to ensure the sealing of the fuel pipeline, some sealing structures need to be adopted. The existing sealing structure simply adds a sealing ring, which cannot meet the requirements of sealing performance. At the same time, the metal pipe oil pipe is often broken due to the connection is not firm, resulting in oil leakage. Phenomenon. Contents of the invention [0003] Aiming at the above technical problems, the present invention provides...

Claims

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Application Information

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IPC IPC(8): F16L15/04
Inventor 张顺
Owner CHANGZHOU CHANGRUI TIANLI POWER MACHINERY
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