A high-pressure injection oil pipe for an in-line engine

Abstract

The utility model relates to internal combustion engine accessory technical field, concretely relates to a kind of high-pressure injection oil pipe for track internal combustion engine, including connecting pipe, the outer side surface of both ends of connecting pipe is all thread screw connection and is connected with inner taper nut and bushing, inner taper nut one side surface is fixedly connected with connecting sleeve, connecting sleeve inner side surface is provided with internal thread, the both ends of connecting pipe are all provided with spherical connector, and the communication port for oil passage is set on spherical connector;Connecting pipe specifically adopts low-alloy high-strength cold-drawn seamless steel pipe processing, can be normal work in-60~+180 ℃ high-low temperature environment for a long time, can adapt to a variety of severe environment, with higher service life, simultaneously, the cost of connecting pipe can be greatly reduced, it is favorable to actual popularization, the both ends of connecting pipe adopt spherical connector, the outer surface of spherical connector is spherical surface, compared with traditional oil pipe end portion conical design, better sealing, can effectively prevent oil leakage phenomenon, improve the sealing reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of internal combustion engine parts, specifically a high-pressure injection oil pipe for a rail internal combustion engine. Background Technology

[0002] With continuous technological advancements and market expansion, the application prospects of high-pressure injection pipes are becoming increasingly broad. They are not only widely used in railway transportation but are also gradually expanding into other fields such as shipbuilding and construction machinery, providing more development opportunities for the diesel engine high-pressure injection pipe market for internal combustion locomotives. In today's railway transportation sector, diesel locomotives, with their unique advantages, play a crucial role in areas lacking power grids, becoming an indispensable transportation power source. Powered by diesel combustion, the high-pressure diesel fuel pipe of the internal combustion engine, as the core component for transporting high-pressure fuel, bears a vital mission during operation. However, existing technologies have the following shortcomings in their use:

[0003] Most high-pressure injection oil pipes for rail internal combustion engines on the market are too expensive, which is not conducive to the development of the internal combustion engine industry. At the same time, the ends of traditional high-pressure injection pipes are often tapered, which makes them unreliable during installation and use, and they have certain installation stress. High-pressure injection oil pipes are also difficult to use in harsh environments for a long time.

[0004] Therefore, a high-pressure injection oil pipe for a rail internal combustion engine is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-pressure injection oil pipe for rail internal combustion engines. This solves the problem that most high-pressure injection oil pipes for rail internal combustion engines on the market are too expensive, which is not conducive to the development of the internal combustion engine industry. At the same time, traditional high-pressure injection pipes often have tapered ends, which results in insufficient reliability during installation and use, certain installation stress, and difficulty in using high-pressure injection oil pipes in harsh environments for a long time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure injection oil pipe for a rail internal combustion engine, comprising a connecting pipe, wherein an inner conical nut and a bushing are threadedly connected to the outer surfaces of both ends of the connecting pipe, a connecting sleeve is fixedly connected to one side surface of the inner conical nut, the inner surface of the connecting sleeve is provided with an internal thread, and a ball-shaped connector is provided at both ends of the connecting pipe, wherein a communication port for oil passage is opened on the ball-shaped connector.

[0007] Preferably, the two bushings are located inside the two connecting sleeves respectively, and the outer surface of the bushings does not contact the inner surface of the connecting sleeves.

[0008] Preferably, the two spherical connectors are located inside the two connecting sleeves, and the spherical connectors are concentric with the connecting sleeves.

[0009] Preferably, the connecting port is connected to the inside of the connecting pipe, and the diameter of the connecting port is the same as the inner diameter of the connecting pipe.

[0010] Preferably, the diameter of the spherical connector is the same as the diameter of the connecting pipe, and the spherical connector and the connecting pipe are integrally formed.

[0011] Preferably, the connecting pipe is a seamless steel pipe.

[0012] Compared with the prior art, this utility model provides a high-pressure injection oil pipe for a rail internal combustion engine, which has the following beneficial effects:

[0013] 1. The connecting pipe is made of low-alloy high-strength cold-drawn seamless steel pipe, which can work normally in high and low temperature environments of -60℃ to +180℃ for a long time. It can adapt to a variety of harsh environments, has a long service life, and can significantly reduce the cost of the connecting pipe, which is conducive to practical promotion.

[0014] 2. Both ends of the connecting pipe adopt ball-shaped connectors. The outer surface of the ball-shaped connector is spherical. Compared with the traditional tapered design of the oil pipe end, the sealing performance is better, which can effectively prevent oil leakage and improve the sealing reliability. At the same time, it can be self-adaptive during assembly, effectively reducing installation stress and further improving assembly efficiency.

[0015] 3. The inner tapered nut is screwed into the connecting pipe thread, and the bushing is connected to the connecting pipe with a left-hand thread, which allows for quick disassembly or replacement of the inner tapered nut and bushing, and has the advantages of convenient installation and easy disassembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A magnified structural diagram of part A in the middle;

[0018] Figure 3 This is a schematic diagram of the connection structure between the connecting pipe and the bushing in this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the connecting tube and the ball-shaped connector in this utility model.

[0020] In the diagram: 1. Connecting pipe; 2. Inner tapered nut; 3. Bushing; 4. Connecting sleeve; 5. Ball joint; 6. Connecting port. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example:

[0023] Please see Figure 1 - Figure 4 This embodiment describes a high-pressure injection oil pipe for a rail internal combustion engine, comprising a connecting pipe 1. Both ends of the connecting pipe 1 have an inner conical nut 2 and a bushing 3 threadedly connected to their outer surfaces. The inner conical nut 2 is threadedly connected to the connecting pipe 1, and the bushing 3 is connected to the connecting pipe 1 using a left-hand thread. This allows for quick disassembly and replacement of the inner conical nut 2 and the bushing 3, offering advantages such as convenient installation and easy disassembly. A connecting sleeve 4 is fixedly connected to one side of the inner conical nut 2. The inner surface of the connecting sleeve 4 has an internal thread. Two bushings 3 are located inside the two connecting sleeves 4, and the outer surface of the bushing 3 does not contact the inner surface of the connecting sleeve 4. Both ends of the connecting pipe 1 have ball-shaped connectors 5. During assembly, the ball-shaped connectors 5 are aligned with the engine nozzle, and the inner conical nut 2 is rotated. Through the internal thread on the inner surface of the connecting sleeve 4, the connecting sleeve 4 is threaded onto the engine nozzle. The two ball-shaped connectors 5 are located inside the two connecting sleeves 4, and are concentric with the connecting sleeves 4. The ball-shaped connectors 5 can fit tightly with the engine nozzle, resulting in low assembly stress. The outer surface of the ball-shaped connectors 5 is spherical, which, in conjunction with the bushing 3, provides better sealing compared to the traditional tapered design of the oil pipe end, effectively preventing oil leakage and improving sealing reliability. At the same time, it can self-adapt to assembly, effectively reducing installation stress and further improving assembly efficiency. The ball-shaped connectors 5 have a connecting port 6 for oil passage, which is connected to the inside of the connecting pipe 1. The diameter of the connecting port 6 is the same as the inner diameter of the connecting pipe 1, and the diameter of the ball-shaped connectors 5 is the same as the pipe diameter of the connecting pipe 1. The ball-shaped connectors 5 and the connecting pipe 1 are integrally formed. Through the connecting port 6 on the ball-shaped connectors 5, in conjunction with the connecting pipe 1, it is easy for the oil to flow normally.

[0024] like Figure 1 and Figure 4 As shown, the connecting pipe 1 is a seamless steel pipe. Specifically, the connecting pipe 1 is made of low alloy high strength cold-drawn seamless steel pipe, which can work normally in high and low temperature environments of -60℃ to +180℃ for a long time. It can adapt to a variety of harsh environments and has a long service life. At the same time, it can effectively reduce the cost of the connecting pipe 1, which is conducive to practical promotion.

[0025] The working principle of the above embodiment is as follows: During assembly, the spherical connector 5 is aligned with the engine nozzle, and the inner tapered nut 2 is rotated. Through the internal thread provided on the inner surface of the connecting sleeve 4, the connecting sleeve 4 is threadedly connected to the engine nozzle. At the same time, the spherical connector 5 can fit tightly with the engine nozzle, resulting in low assembly stress. The outer surface of the spherical connector 5 is spherical, and in conjunction with the bushing 3, compared with the traditional tapered design of the oil pipe end, the sealing performance is better, which can effectively prevent oil leakage and improve sealing reliability. At the same time, it can self-adapt to assembly, effectively reducing installation stress and further improving assembly efficiency. The opening 6, in conjunction with the connecting pipe 1, facilitates the normal flow of oil. The connecting pipe 1 is specifically made of low-alloy, high-strength cold-drawn seamless steel pipe, capable of operating normally in high and low temperature environments ranging from -60℃ to +180℃. It can adapt to various harsh environments and has a long service life. This also effectively reduces the cost of the connecting pipe 1, making it easier for practical application. The inner tapered nut 2 is threadedly connected to the connecting pipe 1, and the bushing 3 is connected to the connecting pipe 1 using a left-hand thread. This allows for quick disassembly and replacement of the inner tapered nut 2 and the bushing 3, offering the advantages of convenient installation and easy disassembly.

[0026] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure injection oil pipe for a rail internal combustion engine, characterized in that: The device includes a connecting pipe (1), with an inner conical nut (2) and a bushing (3) threadedly connected to the outer surfaces of both ends of the connecting pipe (1). A connecting sleeve (4) is fixedly connected to one side surface of the inner conical nut (2), and the inner surface of the connecting sleeve (4) is provided with an internal thread. Both ends of the connecting pipe (1) are provided with ball-shaped connectors (5), and the ball-shaped connectors (5) are provided with a connecting port (6) for oil passage.

2. The high-pressure injection oil pipe for a rail internal combustion engine according to claim 1, characterized in that: The two bushings (3) are located inside the two connecting sleeves (4) respectively, and the outer surface of the bushing (3) does not contact the inner surface of the connecting sleeve (4).

3. The high-pressure injection oil pipe for a rail internal combustion engine according to claim 1, characterized in that: The two ball-shaped connectors (5) are located inside the two connecting sleeves (4) respectively, and the ball-shaped connectors (5) and the connecting sleeves (4) are concentric.

4. The high-pressure injection oil pipe for a rail internal combustion engine according to claim 1, characterized in that: The connecting port (6) is connected to the inside of the connecting pipe (1), and the diameter of the connecting port (6) is the same as the inner diameter of the connecting pipe (1).

5. A high-pressure injection oil pipe for a rail internal combustion engine according to claim 1, characterized in that: The diameter of the spherical connector (5) is the same as the diameter of the connecting pipe (1), and the spherical connector (5) and the connecting pipe (1) are integrally formed.

6. The high-pressure injection oil pipe for a rail internal combustion engine according to claim 1, characterized in that: The connecting pipe (1) is a seamless steel pipe.

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