Coaxial reducing pipe

Abstract

The utility model relates to a coaxial reducing pipe which comprises a main pipe body with a larger diameter and a shrinking pipe with a smaller diameter, the main pipe body is connected with the shrinking pipe through a reducing neck, the reducing neck is in a conical pipe shape, the upper end of the reducing neck is connected with the shrinking pipe, and the lower end of the reducing neck is connected with the main pipe body; the wall thickness of the main pipe body is greater than that of the shrinkage pipe; the wall thickness of the reducing neck is gradually increased from top to bottom; the wall thickness of the upper end of the gradually-shrunk neck is equal to that of the shrunk pipe, and the wall thickness of the lower end of the gradually-shrunk neck is equal to that of the main pipe. The main pipe body and the shrinkage pipe are coaxial; and the main pipe body, the reducing neck and the shrinking pipe are forged and pressed to form an integral structure. The utility model is formed into an integral structure by forging and pressing, can bear high-temperature and high-pressure media, and has the characteristics of high strength and long service life. The wall thickness of the main pipe body is larger than that of the shrinkage pipe, so that the manufacturing cost is effectively reduced, the product weight is reduced, the compression strength is higher, and the reliability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline joints, in particular to a coaxial tapered pipe. Background Art

[0002] The media transported by existing industrial pipelines include not only non-corrosive media such as oil, water, and gas, but also corrosive media and high-temperature, high-pressure steam. In industrial pipelines, it is often necessary to connect pipes of different diameters through reducers. Reducers are pipe sections with unequal diameters at both ends, and are generally mass-produced by casting or turning. This type of reducer produced by traditional manufacturing methods often has unstable quality and sometimes has insufficient strength, resulting in pipeline leakage. Therefore, it cannot withstand high pipeline pressure and has a short service life. Utility Model Content

[0003] The utility model aims to provide a coaxial tapered tube which can withstand high temperature and high pressure media and has high strength and long service life.

[0004] The purpose of this utility model is achieved by adopting the following technical solutions:

[0005] A coaxial tapered tube comprises a main tube body with a larger diameter and a contraction tube with a smaller diameter, wherein the main tube body is connected to the contraction tube via a tapered neck, wherein the tapered neck is configured in a conical tubular shape, wherein the upper end thereof is connected to the contraction tube, and the lower end thereof is connected to the main tube body;

[0006] The main pipe and the shrinkable pipe are both cylindrical, and the wall thickness of the main pipe is greater than that of the shrinkable pipe;

[0007] The wall thickness of the tapered neck gradually increases from top to bottom;

[0008] The wall thickness of the upper end of the tapered neck is the same as that of the shrink tube, and the wall thickness of the lower end of the tapered neck is the same as that of the main tube.

[0009] As a preferred technical solution of the utility model, the outer diameter of the main pipe body is 50.0-135.0 mm; the outer diameter of the shrink tube is 19.5-50.0 mm.

[0010] As a preferred technical solution of the utility model, the wall thickness of the main pipe body is 8.5-12.0 mm; the wall thickness of the shrink tube is 4.5-8.0 mm.

[0011] As a preferred technical solution of the utility model, the height of the tapered neck is 31.5-55.0 mm. As a preferred technical solution of the utility model, the main tube and the shrink tube are coaxial.

[0012] As a preferred technical solution of the utility model, the main body and the tapered neck and shrink tube are formed into an integral structure by forging.

[0013] As a preferred technical solution of the utility model, the height of the main pipe is 115.8 mm, and the outer diameter is 66.8 mm; the height of the shrink tube is 26.0 mm, and the outer diameter is 20.6 mm; the height of the tapered neck is 36.0 mm.

[0014] As a preferred technical solution of the utility model, the wall thickness of the main tube is 9.1 mm; the wall thickness of the shrink tube is 4.8 mm.

[0015] Beneficial effects of the utility model: Compared with the prior art, the utility model is manufactured into an integral structure through forging and forming, can withstand high temperature and high pressure media, has the characteristics of high strength and long service life. The wall thickness of the main pipe with a larger diameter of the utility model is greater than the wall thickness of the shrink tube with a smaller diameter, which not only effectively reduces the manufacturing cost and reduces the weight of the product, but also has higher compressive strength and higher reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure viewed from above.

[0018] In the figure: 1. main body, 2. tapered neck, 3. contraction tube. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0020] like Figure 1 and Figure 2 As shown, a coaxial tapered tube comprises a main tube body 1 with a larger diameter and a contraction tube 3 with a smaller diameter, wherein the main tube body 1 is connected to the contraction tube 3 via a tapered neck 2, wherein the tapered neck 2 is configured to be a tapered tube, wherein the upper end thereof is connected to the contraction tube 3, and the lower end thereof is connected to the main tube body 1; the main tube body 1 and the contraction tube 3 are both configured to be cylindrical, wherein the wall thickness of the main tube body 1 is greater than the wall thickness of the contraction tube 3; the wall thickness of the tapered neck 2 gradually increases from top to bottom; the wall thickness of the upper end of the tapered neck 2 is the same as the wall thickness of the contraction tube 3, and the wall thickness of the lower end of the tapered neck 2 is the same as the wall thickness of the main tube body 1.

[0021] The outer diameter of the main pipe body 1 of the utility model is 50.0-135.0 mm; the outer diameter of the shrink tube 3 is 19.5-50.0 mm; the wall thickness of the main pipe body 1 is 8.5-12.0 mm; the wall thickness of the shrink tube 3 is 4.5-8.0 mm; the height of the tapered neck 2 is 31.5-55.0 mm.

[0022] In this embodiment, the main body 1 and the shrink tube 3 are coaxial; the main body 1, the tapered neck 2 and the shrink tube 3 are formed into an integral structure by forging. The main body 1 has a height of 115.8 mm and an outer diameter of 66.8 mm; the shrink tube 3 has a height of 26.0 mm and an outer diameter of 20.6 mm; the height of the tapered neck 2 is 36.0 mm. The wall thickness of the main body 1 is 9.1 mm; the wall thickness of the shrink tube 3 is 4.8 mm.

[0023] The above embodiments are limited to illustrating the concept and technical features of the utility model, and their purpose is to allow those skilled in the art to understand the technical solution and implementation method of the utility model, and they cannot limit the protection scope of the utility model. Any equivalent replacement or equivalent change made according to the technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. A coaxial tapered tube, comprising a main body with a larger diameter and a shrinking tube with a smaller diameter, characterized in that: The main pipe body is connected to the shrink tube through a tapered neck, the tapered neck is set to be a tapered tube, the upper end of which is connected to the shrink tube, and the lower end is connected to the main pipe body; The main pipe and the shrinkable pipe are both cylindrical, and the wall thickness of the main pipe is greater than that of the shrinkable pipe; The wall thickness of the tapered neck gradually increases from top to bottom; The wall thickness of the upper end of the tapered neck is the same as that of the shrink tube, and the wall thickness of the lower end of the tapered neck is the same as that of the main tube.

2. The coaxial reducer according to claim 1, characterized in that: The outer diameter of the main pipe body is 50.0-135.0 mm; the outer diameter of the shrink tube is 19.5-50.0 mm.

3. The coaxial reducer according to claim 1, characterized in that: The wall thickness of the main pipe is 8.5-12.0 mm; the wall thickness of the shrink tube is 4.5-8.0 mm.

4. The coaxial reducer according to claim 1, characterized in that: The height of the tapered neck is 31.5-55.0 mm.

5. The coaxial reducer according to claim 1, characterized in that: The main body and the shrink tube are coaxial.

6. The coaxial reducer according to claim 1, characterized in that: The main body, the tapered neck and the shrink tube are formed into an integral structure by forging.

7. The coaxial reducer according to claim 1, characterized in that: The height of the main pipe is 115.8 mm, and the outer diameter is 66.8 mm; the height of the shrink tube is 26.0 mm, and the outer diameter is 20.6 mm; the height of the tapered neck is 36.0 mm.

8. The coaxial reducer according to claim 1, characterized in that: The wall thickness of the main pipe is 9.1 mm; The wall thickness of the shrink tubing is 4.8 mm.

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