CN220849870U

CN220849870U - Flexible high-pressure oil pipe

Info

Publication number: CN220849870U
Application number: CN202322831927.7U
Authority: CN
Inventors: 刘硕; 闫华伟; 李良; 于鑫; 李福海
Original assignee: Qingdao Zichai Boyang Diesel Engine Co ltd
Current assignee: Qingdao Zichai Boyang Diesel Engine Co ltd
Priority date: 2023-10-23
Filing date: 2023-10-23
Publication date: 2024-04-26
Anticipated expiration: 2033-10-23

Abstract

The utility model relates to the technical field of high-pressure oil pipe installation, and discloses a flexible high-pressure oil pipe, wherein a second bent neck is arranged at one end, close to a joint II, of a pipeline of the high-pressure oil pipe, a first bent neck is arranged at one end, close to a joint I, of the pipeline of the high-pressure oil pipe, and an inner supporting steel sheet is arranged inside the pipeline of the high-pressure oil pipe. Under the condition that the relative position of the rail device connected with the high-pressure oil pipe joint is not changed, the radial stress of the common rail pump connected with the high-pressure oil pipe by the rail device can be reduced by utilizing the arrangement of the two groups of bent necks in the oil pipe assembly and the internal support and uniform distribution of the internal support steel sheet, the flexibility of the rail device connected with the high-pressure oil pipe is increased, the reliability of parts is greatly improved, and the rail device has the characteristics of simple structure, reliable operation, small stress, convenience in installation and high reliability.

Description

Flexible high-pressure oil pipe

Technical Field

The utility model relates to the technical field of high-pressure oil pipe installation, in particular to a flexible high-pressure oil pipe.

Background

In recent years, shipping is vigorous in China, the tonnage of ships is bigger and bigger, the power of a needed host is higher and higher, the requirement of a user on oil consumption is higher and higher, so that the development of a high-pressure common rail diesel engine is rapid, when the high-pressure common rail diesel engine runs, the fuel oil after an oil pump has continuous high pressure, the requirement on pipeline sealing is very high, once the fuel oil leaks, rail pressure is unstable, the consequences of fluctuation of the working condition of the diesel engine, surge of a supercharger and the like are caused, the installation stability of a high-pressure oil pipe is particularly important, however, the existing common rail pump is fixed with the position of an oil injector, the length of a connecting high-pressure oil pipe is short (as shown in an attached figure 1 of the specification), the flexibility is insufficient, and when the size of the connecting high-pressure oil pipe is slightly deviated, the installation and connection high-pressure oil pipe joint is subjected to uneven force, and the sealing effect is poor. To this end, a person skilled in the art provides a flexible high-pressure oil pipe to solve the problems set forth in the background art.

Disclosure of utility model

The utility model mainly aims to provide a flexible high-pressure oil pipe, which can effectively solve the problem that the high-pressure oil pipe of the existing high-pressure common rail diesel engine is easy to leak in installation.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a flexible high-pressure oil pipe comprises a first joint, an oil pipe assembly and a second joint;

one end of the pipeline of the oil pipe assembly is connected with the first joint, and the other end of the pipeline of the oil pipe assembly is connected with the second joint;

The oil pipe assembly comprises a high-pressure oil pipe, a second bent neck is arranged at one end, close to the joint II, of the pipeline of the high-pressure oil pipe, a first bent neck is arranged at one end, close to the joint I, of the pipeline of the high-pressure oil pipe, and an inner supporting steel sheet is arranged inside the pipeline of the high-pressure oil pipe.

As still further aspects of the utility model: the first bending neck is of a U-shaped structure, and the second bending neck is of a ninety-degree arc-shaped structure.

As still further aspects of the utility model: the first bent neck and the second bent neck are formed by bending and rolling.

As still further aspects of the utility model: the inner supporting steel sheet is of a cross structure, and the cross outer diameter of the inner supporting steel sheet is matched with the inner diameter of a pipeline of the high-pressure oil pipe.

As still further aspects of the utility model: the ratio of the width to the thickness of the internal supporting steel sheet is lower than 12.5.

Compared with the prior art, the utility model has the following beneficial effects:

Under the condition that the relative position of the rail device connected with the high-pressure oil pipe joint is not changed, the radial stress of the common rail pump connected with the high-pressure oil pipe by the rail device can be reduced by utilizing the arrangement of the two groups of bent necks in the oil pipe assembly and the internal support and uniform distribution of the internal support steel sheet, the flexibility of the rail device connected with the high-pressure oil pipe is increased, the reliability of parts is greatly improved, and the rail device has the characteristics of simple structure, reliable operation, small stress, convenience in installation and high reliability.

Drawings

FIG. 1 is a schematic diagram of a conventional structure of a flexible high-pressure oil pipe according to the present utility model;

FIG. 2 is a schematic view of a flexible high pressure tubing;

FIG. 3 is a schematic plan view of an oil tube assembly in a flexible high pressure oil tube according to the present utility model;

FIG. 4 is a schematic cross-sectional view of an oil tube assembly in a flexible high pressure oil tube according to the present utility model.

In the figure: 1. a first joint; 2. an oil pipe assembly; 21. a high pressure oil pipe; 22. an inner supporting steel sheet; 23. a first neck curl; 24. a second neck curl; 3. and a second joint.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-4, a flexible high-pressure oil pipe includes a joint 1, an oil pipe assembly 2, and a joint second 3, wherein one end of a pipe of the oil pipe assembly 2 is connected with the joint 1, the other end of the pipe of the oil pipe assembly 2 is connected with the joint second 3, the oil pipe assembly 2 includes a high-pressure oil pipe 21, one end of the pipe of the high-pressure oil pipe 21, which is close to the joint second 3, is provided with a second bent neck 24, the first bent neck 23 is in a U-shaped structure, the second bent neck 24 is in a ninety-degree arc structure, the first bent neck 23 and the second bent neck 24 are formed by bending and rolling, when the high-pressure oil pipe is used as a connecting pipe of a common rail pump and an oil injector, the oil injector is connected with the common rail pump in a conductive way by the joint 1 and the joint second 3, when high-pressure oil is pressed out from the common rail pump and flows into the oil pipe assembly 2, the high-pressure oil can be subjected to primary buffering flow guide through the second bent neck 24 of the ninety-degree arc-shaped structure arranged on the oil pipe assembly 2, the radial impact force generated by high-pressure punching of the high-pressure oil is reduced, then the high-pressure oil can be subjected to secondary buffering flow guide through the first bent neck 23 of the U-shaped structure arranged on the oil pipe assembly 2, the radial impact force generated by high-pressure of the high-pressure oil is reduced again, the high-pressure oil is kept in a stable flow state and is conveyed into the oil sprayer, and then the flexibility of the high-pressure oil pipe is improved through reducing the radial stress of the high-pressure oil pipe, so that the reliability of parts is greatly improved.

The pipeline of high pressure oil pipe 21 is close to the one end of joint 1 and is provided with first elbow 23, the pipeline inside of high pressure oil pipe 21 is provided with the internal stay steel sheet 22, internal stay steel sheet 22 is the cross structure, and the cross external diameter of internal stay steel sheet 22 and the pipeline internal diameter looks adaptation of high pressure oil pipe 21, when utilizing high pressure oil pipe as the connecting tube of common rail pump and sprayer, when high pressure oil circulates in oil pipe assembly 2, through the inside lining that utilizes the internal stay steel sheet 22 of cross structure, can divide into four groups with high pressure oil, make it keep the reposition of redundant personnel state, circulate in high pressure oil pipe 21, can regard as the internal stay piece on the one hand, improve high pressure oil pipe's flexibility, on the other hand can reduce the intensity of single-strand high pressure oil radial impact, carry out accurate reposition of redundant personnel water conservancy diversion transport to it, the radial impulsive force that high pressure oil pipe received is reduced.

The ratio of the width to the thickness of the inner supporting steel sheet 22 is lower than 12.5, and the inner lining of the inner supporting steel sheet 22 with proper size can strengthen the flexibility strength of the high-pressure oil pipe 21 and simultaneously does not occupy more inner space of the high-pressure oil pipe 21.

The working principle of the utility model is as follows: when the high-pressure oil pipe is used as a connecting pipeline of the common rail pump and the oil injector, the oil injector is connected with the common rail pump in a conducting manner by the aid of the first joint 1 and the second joint 3, when the high-pressure oil flows into the oil pipe assembly 2 from the common rail pump, the high-pressure oil can be subjected to primary buffering diversion through the second bent neck 24 of the ninety-degree arc-shaped structure arranged on the oil pipe assembly 2, then the high-pressure oil can be subjected to secondary buffering diversion through the first bent neck 23 of the U-shaped structure arranged on the oil pipe assembly 2, radial impact force generated by the high-pressure oil is reduced, the high-pressure oil is enabled to keep a stable flow state and is conveyed to the oil injector, then the flexibility of the high-pressure oil pipe is improved, the reliability of parts is greatly improved by reducing the radial stress of the high-pressure oil pipe, and when the high-pressure oil flows in the oil pipe assembly 2, the high-pressure oil can be shunted into four groups by the inner lining of the inner supporting steel sheet 22 of the cross structure, so that the high-pressure oil can be kept in a shunting state, on one hand, the high-pressure oil pipe 21 can be used as an inner supporting piece, the flexibility of the high-pressure oil pipe can be improved, on the other hand, the high-pressure oil can be reduced in the accurate diversion strength, the radial impact force can be reduced, the high-pressure oil can be accurately and the high-pressure oil can be prevented from being mounted, and the high-pressure oil can be subjected to the high-pressure impact force, and the situation, and the high-pressure oil can be greatly and stable.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The flexible high-pressure oil pipe is characterized by comprising a first joint (1), an oil pipe assembly (2) and a second joint (3);

One end of a pipeline of the oil pipe assembly (2) is connected with the first joint (1), and the other end of the pipeline of the oil pipe assembly (2) is connected with the second joint (3);

The oil pipe assembly (2) comprises a high-pressure oil pipe (21), a second bent neck (24) is arranged at one end, close to the joint II (3), of the pipeline of the high-pressure oil pipe (21), a first bent neck (23) is arranged at one end, close to the joint I (1), of the pipeline of the high-pressure oil pipe (21), and an inner supporting steel sheet (22) is arranged inside the pipeline of the high-pressure oil pipe (21).

2. A flexible high pressure oil pipe as claimed in claim 1, characterized in that said first neck (23) is of U-shaped configuration and said second neck (24) is of ninety degree arc configuration.

3. A flexible high pressure oil pipe according to claim 1, characterized in that the first (23) and the second (24) bends are each formed by bending and rolling.

4. A flexible high-pressure oil pipe according to claim 1, characterized in that the inner support steel sheet (22) is of a cross structure, and the cross outer diameter of the inner support steel sheet (22) is adapted to the inner diameter of the pipe of the high-pressure oil pipe (21).

5. A flexible high pressure oil pipe as claimed in claim 1, wherein the ratio of the width to the thickness of said inner support steel sheet (22) is lower than 12.5.