High-pressure oil pipe with composite structure

A high-pressure oil pipe and composite technology, applied in the direction of engine components, machines/engines, charging systems, etc., can solve the problems of simple structure of high-pressure oil pipe, mechanical vibration, loose joints, etc., to achieve heat preservation effect, reduce vibration amplitude, The effect of convenient production and processing

Pending Publication Date: 2019-10-01
SHANGHAI TONGHE MARINE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing high-pressure fuel pipe is composed of a pipe body and two joints, and is an important part of the high-pressure volume of the diesel engine and fuel injection system. The pressure of the high-pressure fuel pipe fluctuates periodically during operation, which causes mechanical vibration of the high-pressure fuel pipe during use. Long-term fatigue work will easily lead to loose joints and oil leakage. At the same time, the existing high-pressure oil pipe has a simple structure, and it is difficult to improve the high-pressure oil pipe so that it is suitable for use in different environments.

Method used

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  • High-pressure oil pipe with composite structure
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Examples

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Effect test

Embodiment 1

[0023] see figure 1 , a high-pressure oil pipe with a composite structure of the present invention, comprising a double-layer oil pipe and two joints 1, the double-layer oil pipe includes an inner layer oil pipe 2 and an outer layer casing 3, and the two ends of the inner layer oil pipe 2 are provided with upsetting heads. The head is set in the joint 1, the outer casing 3 is sleeved on the inner oil pipe 2, and the two ends of the outer casing 3 are respectively sleeved on the two joints 1, and the outer casing 3 is a high-pressure steel wire braided rubber hose. The outer casing 3 is clamped on the joint 1 through the clamp 4 sleeved on the outer casing 3, and a filling space 5 is preset between the outer casing 3 and the inner oil pipe 2; the filling space 5 is filled with filling 6, the outer sleeve 3 is provided with two through holes, and the filling valve 7 and the discharge valve 8 are fixedly installed on the two through holes respectively. When working, the discharge...

Embodiment 2

[0025] see figure 1 , a high-pressure oil pipe with a composite structure of the present invention, comprising a double-layer oil pipe and two joints 1, the double-layer oil pipe includes an inner layer oil pipe 2 and an outer layer casing 3, and the two ends of the inner layer oil pipe 2 are provided with upsetting heads. The head is set in the joint 1, the outer casing 3 is sleeved on the inner oil pipe 2, and the two ends of the outer casing 3 are respectively sleeved on the two joints 1, and the outer casing 3 is a high-pressure steel wire braided rubber hose. The outer casing 3 is clamped on the joint 1 through the clamp 4 sleeved on the outer casing 3, and a filling space 5 is preset between the outer casing 3 and the inner oil pipe 2; the filling space 5 is filled with filling 6, the outer sleeve 3 is provided with two through holes, and the filling valve 7 and the discharge valve 8 are fixedly installed on the two through holes respectively. When working, the discharge...

Embodiment 3

[0027] see figure 1 , a high-pressure oil pipe with a composite structure of the present invention, comprising a double-layer oil pipe and two joints 1, the double-layer oil pipe includes an inner layer oil pipe 2 and an outer layer casing 3, and the two ends of the inner layer oil pipe 2 are provided with upsetting heads. The head is set in the joint 1, the outer casing 3 is sleeved on the inner oil pipe 2, and the two ends of the outer casing 3 are respectively sleeved on the two joints 1, and the outer casing 3 is a high-pressure steel wire braided rubber hose. The outer casing 3 is clamped on the joint 1 through the clamp 4 sleeved on the outer casing 3, and a filling space 5 is preset between the outer casing 3 and the inner oil pipe 2; the filling space 5 is filled with filling There are two through holes on the outer casing 3, and the filling valve 7 and the discharge valve 8 are respectively fixedly installed on the two through holes. The filling material 6 is cooling ...

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Abstract

The invention relates to the technical field of high-pressure oil pipes, in particular to a high-pressure oil pipe with a composite structure. The high-pressure oil pipe comprises a double-layer oil pipe and two joints, wherein the double-layer oil pipe comprises an inner-layer oil pipe and an outer-layer sleeve pipe, upset heads are arranged at the two ends of the inner-layer oil pipe, the upsetheads are arranged in the joints, the outer-layer sleeve pipe sleeves the inner-layer oil pipe, the two ends of the outer-layer sleeve pipe are connected to the two joints in a sleeving mode correspondingly, the outer-layer sleeve pipe is a high-pressure steel wire braided rubber pipe, the outer-layer sleeve pipe is clamped on the joints through clamps sleeving on the outer-layer sleeve pipe, anda filling space is pre-arranged between the outer-layer sleeve pipe and the inner-layer oil pipe. By arranging the filling space between the inner-layer oil pipe and the outer-layer sleeve pipe, the filling space is filled with material with different properties, so that the high-pressure oil pipe suitable for different environments can be obtained.

Description

technical field [0001] The invention relates to the technical field of high-pressure oil pipes, in particular to a high-pressure oil pipe with a composite structure. Background technique [0002] The high-pressure oil pipe is an integral part of the high-pressure oil circuit. It is required that the oil pipe must withstand a certain oil pressure and have a certain fatigue strength to ensure the sealing requirements of the pipeline. The high-pressure oil pipe for vehicles mainly appears in high-pressure injection diesel engines and high-pressure injection direct injection. In a gasoline engine, it can withstand the oil pressure required for the engine to run. [0003] The existing high-pressure fuel pipe is composed of a pipe body and two joints. It is an important part of the high-pressure volume of the diesel engine and fuel injection system. The pressure of the high-pressure fuel pipe fluctuates periodically during operation, which causes mechanical vibration of the high-p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M55/00F02M53/00F02B77/08
CPCF02B77/08F02M53/00F02M55/00F02M55/002F02M2200/315F02M2200/9053
Inventor 杨阳卫佩勇冯宁
Owner SHANGHAI TONGHE MARINE EQUIP
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