CN205298863U

CN205298863U - Double -walled high pressure fuel pipe

Info

Publication number: CN205298863U
Application number: CN201520943507.0U
Authority: CN
Inventors: 张勇; 朱树林; 梅加化; 黄禄丰
Original assignee: Anqing CSSC Diesel Engine Co Ltd
Current assignee: Anqing CSSC Diesel Engine Co Ltd
Priority date: 2015-11-23
Filing date: 2015-11-23
Publication date: 2016-06-08
Anticipated expiration: 2025-11-23

Abstract

The utility model discloses a double -walled high pressure fuel pipe, it includes inner tube and sleeve pipe, sleeve pipe parcel in the outside of inner tube, inner tube and sleeve pipe between still be equipped with the bushing pipe, just the bushing pipe is at inner tube and the crooked position of sheathed tube, bushing pipe axial direction be equipped with the crank slot, inner tube length be greater than sheathed tube length, this oil pipe not only can play the guard action when the double -wall pipe return bend, can also be when double -wall pipe internal combustion oil leakage rapid triggered alarm device, remind staff's on -call maintenance, avoid the occurence of failure.

Description

A kind of double-walled high-pressure oil pipe

Technical field

This utility model relates to a kind of connecting tube, in particular, relates to a kind of double-walled high-pressure oil pipe.

Background technology

High-pressure oil pipe is the important component part of high-pressure oil passage on electromotor, require that oil pipe needs to bear certain oil pressure, and to have certain fatigue strength, currently used high-pressure oil pipe is double-skin duct structure mostly, when bent tube technique, tube bends position is more easily damaged, operationally, owing to bearing outside the higher-order of oscillation of high temp oil-fired, still suffer from the strenuous vibration of since engine, now, it is possible to leakage occurs on double layer oil pipe pipeline, crackle, or even local fracture, and mostly high-pressure oil pipe pipeline does not have supporting leakage warning device, when there is fuel leakage, can not find in time, delay limited maintenance time, time serious, cause the major accident such as fire.

Utility model content

Technical problem to be solved in the utility model is in that to provide a kind of double-walled high-pressure oil pipe; this oil pipe is possible not only to play a protective role when double-wall pipe bend pipe; in double-wall pipe, alarm device during fuel leakage, can also be triggered rapidly, remind staff's on-call maintenance, it is to avoid accident occurs.

Technical problem to be solved in the utility model realizes by the following technical solutions.

A kind of double-walled high-pressure oil pipe, it includes interior pipe and sleeve pipe, and described sleeve pipe is wrapped in the outside of interior pipe, is additionally provided with bushing pipe, and described bushing pipe is at the crooked position of interior pipe and sleeve pipe between described interior pipe and sleeve pipe, and described bushing pipe axial direction is provided with crank slot.

Further, described sleeve pipe, it is all matched in clearance between bushing pipe and interior pipe.

Further, described inner tube length is more than the length of sleeve pipe.

During work, interior pipe is the main working parts of double-wall pipe, it is prevented that the once leakage of hydraulic oil; bushing pipe is intermediate layer pipe; process duct when being a kind of bend pipe, just installed before double-wall pipe bend pipe, it is prevented that the destruction of internal pipe during double-wall pipe bend pipe; sleeve pipe is the outermost layer protection pipe of double-wall pipe; preventing Leakage Energy generation secondary leakage, after interior pipe leaks, Leakage Energy will enter in bushing pipe; now Leakage Energy will pass to oil return pipe along the crank slot in bushing pipe, can trigger alarm device simultaneously.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

This utility model adopt double-walled construction, pipeline resistance to compression shock resistance is good, not easy fracture, leakage; The liner tube structure at bent intermediate position, effectively prevent the destruction of internal pipe during high-pressure oil pipe bend pipe, improves yield rate and the working (machining) efficiency of high-pressure oil pipe; The crank slot of memory leak oil can will leak out oil in time and be transported to oil return pipe, triggers alarm device, facilitates staff to keep in repair.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation;

Fig. 2 is this utility model structure disperses figure;

In figure: 1, sleeve pipe; 2, bushing pipe; 3, interior pipe; 4, crank slot.

Detailed description of the invention

For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, this utility model is expanded on further.

As depicted in figs. 1 and 2, a kind of double-walled high-pressure oil pipe, it includes interior pipe 3 and sleeve pipe 1, and sleeve pipe 1 is wrapped in the outside of interior pipe 3, is additionally provided with bushing pipe 2 between interior pipe 3 and sleeve pipe 1, and bushing pipe 2 is at the crooked position of interior pipe 3 and sleeve pipe 1, bushing pipe 2 axial direction is provided with crank slot 4, and bushing pipe 2 just installed before double-wall pipe bend pipe, it is prevented that the destruction of internal pipe 3 during double-wall pipe bend pipe, being all matched in clearance between sleeve pipe 1, bushing pipe 2 and interior pipe 3, interior pipe 3 length is more than the length of sleeve pipe 1.

During work, hydraulic oil is carried in interior pipe 3 wall, when there is leakage, Leakage Energy will enter in bushing pipe 2, now Leakage Energy will pass to oil return pipe along the crank slot 4 in bushing pipe 2, triggering alarm device, Leakage Energy is carried out secondary seal by outermost sleeve pipe 1, it is prevented that Leakage Energy secondary leakage simultaneously.

Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described. Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model. This utility model claims scope and is defined by appending claims and equivalent thereof.

Claims

1. a double-walled high-pressure oil pipe, it includes interior pipe and sleeve pipe, and described sleeve pipe is wrapped in the outside of interior pipe, it is characterised in that: it is additionally provided with bushing pipe between described interior pipe and sleeve pipe, and described bushing pipe is at the crooked position of interior pipe and sleeve pipe, described bushing pipe axial direction is provided with crank slot.

2. a kind of double-walled high-pressure oil pipe according to claim 1, it is characterised in that: described sleeve pipe, it is all matched in clearance between bushing pipe and interior pipe.

3. a kind of double-walled high-pressure oil pipe according to claim 1, it is characterised in that: described inner tube length is more than the length of sleeve pipe.