CN218914031U

CN218914031U - High-pressure oil pipe

Info

Publication number: CN218914031U
Application number: CN202223252985.6U
Authority: CN
Inventors: 郭太军
Original assignee: Ningbo Puruida Hydraulic Machinery Co ltd
Current assignee: Ningbo Puruida Hydraulic Machinery Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-04-25
Anticipated expiration: 2032-12-05

Abstract

The utility model provides a high-pressure oil pipe, and relates to the technical field of pipelines. According to the high-pressure oil pipe, the steel pipe is adopted, the pipe sleeve is arranged at one end of the steel pipe, one end, far away from the steel pipe, of the pipe sleeve extends forwards along the axis of the steel pipe, and the inner diameter of the pipe sleeve is the same as the outer diameter of the steel pipe.

Description

High-pressure oil pipe

Technical Field

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

Background

The high-pressure steel pipe is a seamless steel pipe of high-quality carbon steel, alloy structural steel and stainless steel for manufacturing high-pressure containers and pipelines.

In the production process of a daily hydraulic machine, a steel seamless high-pressure steel pipe is required to be used as an oil pipe, and a plurality of oil pipes are required to be connected in the use process, so that the technical requirement of welding a pipe port and a pipe port exists, the operation is generally to open the ports of the two oil pipes and then butt-weld the ports, and the connection mode has poor vibration resistance to lateral force and is easy to fatigue and crack. For this reason, the steel pipe of taking the connection pad of current application number CN201220526793.7 has the steel pipe body, and the one end of steel pipe body is provided with the connection pad, connection pad and steel pipe body structure as an organic whole, and the circumference equipartition has the bolt hole on the connection pad, through setting up the connection pad in the one end of steel pipe body to set up the bolt hole on the connection pad, be convenient for it is connected with the connection pad of other steel pipes. The strength of the joint can be provided by the connecting disc, but the inventors found that the joint is likely to have a gap and a leak accident when the bolts are inserted at the time of the connection of the steel pipes. The operation is troublesome if the land is re-welded in order to prevent leakage.

Accordingly, the prior art is in need of improvement.

Disclosure of Invention

The utility model aims to provide a high-pressure oil pipe which can solve the problems in the prior art and has the beneficial effects of simple connection, high connection strength and no welding slag pollution to a pipeline.

Embodiments of the present utility model are implemented as follows:

the embodiment of the application provides a high-pressure oil pipe, wherein includes the steel pipe, the one end of steel pipe is provided with the pipe box, the pipe box is kept away from the one end of steel pipe is followed the axis of steel pipe extends forward, one side internal diameter of pipe box is the same with the homonymy the external diameter of steel pipe.

In some embodiments of the utility model, the shroud interfaces with the end face of the steel pipe.

In some embodiments of the utility model, the sleeve is sleeved on the steel pipe.

In some embodiments of the utility model, the steel pipe is a seamless steel pipe.

In some embodiments of the utility model, the outer wall of the steel pipe is wound with steel wires.

In some embodiments of the present utility model, the outer wall of the steel pipe is provided with a spiral groove into which the steel wire is inserted.

Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:

the embodiment of the utility model provides a high-pressure oil pipe, which mainly comprises two parts of a steel pipe and a pipe sleeve, wherein the steel pipe is used for playing the role of oil way transportation, and the pipe sleeve is used for reinforcing the two steel pipes. A pipe sleeve is arranged on one steel pipe, the pipe sleeve is sleeved on the port of the steel pipe or the pipe sleeve is in butt joint with the port of the steel pipe, one end of the latter steel pipe without the pipe sleeve is inserted into the pipe sleeve of the former steel pipe, and a welding machine is used for welding the pipe sleeve and the latter steel pipe. The pipe sleeve wraps the joint of the two steel pipes, and the vibration resistance shape of the joint is increased. Meanwhile, the welding position is not at the joint of the two steel pipes, and welding slag cannot fall into the steel pipes. The bolts are not needed during connection, and the operation is simpler. Therefore, the high-pressure oil pipe provided by the embodiment of the utility model has the beneficial effects of simple connection, high connection strength and no pollution of welding slag to the pipeline.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a split high-pressure oil pipe according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a high-pressure oil pipe after connection according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of another split high-pressure oil pipe according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of another high-pressure oil pipe according to an embodiment of the present utility model after connection.

Icon: 1-steel pipe and 2-pipe sleeve.

Detailed Description

Example 1

Referring to fig. 1 to 2, a high-pressure oil pipe provided in this embodiment is used for transporting oil in a hydraulic press production process, and the specific structure is as follows.

Referring to fig. 1 and 2, the embodiment of the utility model provides a high-pressure oil pipe, which mainly comprises two parts, namely a steel pipe 1 and a pipe sleeve 2, wherein the steel pipe 1 is used for performing an oil-way transportation function, and the pipe sleeve 2 is used for reinforcing the two steel pipes 1.

As shown in fig. 1, a schematic diagram of a steel pipe 1 and a pipe sleeve 2 after being disassembled is shown, the steel pipe 1 is a stainless steel seamless steel pipe 1 in the prior art, and the pipe sleeve 2 is arranged at the left end of the steel pipe 1. The inner diameter of the pipe sleeve 2 is the same as the outer diameter of the steel pipe 1, the pipe sleeve 2 is sleeved at the left end part of the right steel pipe 1, the right end of the pipe sleeve 2 is welded and fixed with the outer wall of the right steel pipe 1, and the left end of the right steel pipe 1 is aligned with the middle position of the pipe sleeve 2.

During connection, the right end of the left steel pipe 1 is aligned with the left end of the pipe sleeve 2 and inserted, so that the right end of the left steel pipe 1 is abutted against the left end of the right steel pipe 1, then the left end of the pipe sleeve 2 and the outer wall of the left steel pipe 1 are welded and fixed, and at the moment, as shown in fig. 2, the butt joint of the two steel pipes 1 is realized.

Because the welding position of the pipe sleeve 2 and the left steel pipe 1 is misplaced with the abutting position of the left steel pipe 1 and the right steel pipe 1, welding slag generated by welding cannot fall into the steel pipe 1, and the connecting effect is better.

Example 2

Referring to fig. 3 and 4, the present embodiment is basically the same as the embodiment 1, and the main difference is that the sleeve 22 is fixed on the end surface of the steel pipe 1 in the present embodiment.

As shown in fig. 3, a schematic diagram of a steel pipe 1 and a pipe sleeve 2 after being detached is shown, in the same embodiment, the steel pipe 1 is also a stainless steel seamless steel pipe 1 in the prior art, and the pipe sleeve 2 is installed at the left end of the right steel pipe 1. The right end face of the pipe sleeve 2 and the left end face of the right steel pipe 1 are welded and fixed, the left inner diameter of the pipe sleeve 2 is the same as the outside of the left steel pipe 1, and the right end of the left steel pipe 1 can be inserted into the left end of the pipe sleeve 2.

Similarly, the welding position of the pipe sleeve 2 and the left steel pipe 1 is misplaced with the abutting position of the left steel pipe 1 and the right steel pipe 1, so that welding slag generated by welding cannot fall into the steel pipe 1, and the connecting effect is better.

Example 3

The present embodiment is basically the same as the embodiment, and is mainly different in that the outer wall of the steel pipe 1 in the present embodiment is wound with steel wires.

The steel pipe 1 is cylindrical, a spiral groove is formed in the outer wall of the steel pipe 1, the shape of the spiral groove is similar to that of a spiral line, and the spiral groove is formed around the outer wall of the steel pipe 1. The pitch of the spiral groove is 8 mm, the groove width of the spiral groove is about 4 mm, and the bottom of the steel wire is embedded into the spiral groove (the embedded depth is about one fourth of the diameter of the steel wire), so that the steel wire is wound around the outer wall of the steel pipe 1.

Further, the steel wire has a certain pretightening force, the steel pipe 1 is tightened, and compared with the steel pipe 1 with the same wall thickness, the steel wire has better strength, and the service life of the steel pipe 1 is prolonged.

The implementation principle of the high-pressure oil pipe provided by the embodiment of the utility model is as follows:

referring to fig. 2 or 4, a pipe sleeve 2 is installed on a steel pipe 1, the pipe sleeve 2 is sleeved on a port of the steel pipe 1 or the pipe sleeve 2 is in butt joint with a port of the steel pipe 1, one end of a steel pipe 1 without the pipe sleeve 22 is inserted into the pipe sleeve 2 of a steel pipe 1, and a welding machine is used for welding the pipe sleeve 2 and the steel pipe 1.

In summary, the embodiment of the utility model provides a high-pressure oil pipe, wherein a pipe sleeve 2 wraps the joint of two steel pipes 1, and the vibration resistance of the joint is increased. Meanwhile, the welding position is not at the joint of the two steel pipes 1, and welding slag cannot fall into the steel pipes 1. The bolts are not needed during connection, and the operation is simpler. Therefore, the high-pressure oil pipe provided by the embodiment of the utility model has the beneficial effects of simple connection, high connection strength and no pollution of welding slag to the pipeline.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The high-pressure oil pipe is characterized by comprising a steel pipe, wherein a pipe sleeve is arranged at one end of the steel pipe, one end, far away from the steel pipe, of the pipe sleeve extends forwards along the axis of the steel pipe, and the inner diameter of one side of the pipe sleeve is the same as the outer diameter of the steel pipe at the same side.

2. The high pressure oil pipe of claim 1 wherein said shroud interfaces with an end face of said steel pipe.

3. The high pressure oil pipe of claim 1, wherein said sleeve is sleeved on said steel pipe.

4. The high pressure oil pipe of claim 1, wherein said steel pipe is a seamless steel pipe.

5. The high pressure oil pipe according to any one of claims 1 to 4, wherein the outer wall of the steel pipe is wound with a steel wire.

6. The high pressure oil pipe of claim 5, wherein the outer wall of the steel pipe is provided with a spiral groove into which the steel wire is inserted.