Eccentric connecting pipe

Abstract

The utility model relates to an eccentric connecting pipe which comprises a main pipe body with a larger diameter and an auxiliary pipe body with a smaller diameter, the main pipe body and the auxiliary pipe body are both in a hollow circular pipe shape, the auxiliary pipe body is arranged at the upper end of the main pipe body and is connected with the main pipe body through a reducing neck, and the axis of an inner hole of the auxiliary pipe body and the axis of an inner hole of the main pipe body are not coaxial; the wall thickness of the main pipe body is larger than that of the auxiliary pipe body. The gradually-shrunk neck is in a conical tube shape, and the wall thickness of the gradually-shrunk neck is gradually increased from top to bottom. The wall thickness of the upper end of the gradually-shrunk neck is the same as that of the auxiliary pipe body, and the wall thickness of the lower end of the gradually-shrunk neck is the same as that of the main pipe body. Compared with the prior art, the integrated structure is formed through integral forging and pressing, can bear high-temperature and high-pressure media, and has the advantages of being high in strength and long in service life. The wall thickness of the main pipe body with the larger diameter is larger than that of the auxiliary pipe body with the smaller diameter, 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 pipelines, in particular to an eccentric pipe connection. 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 an eccentric pipe which can withstand high temperature and high pressure medium and has high strength and long service life.

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

[0005] An eccentric pipe connection includes a main pipe body with a larger diameter and a secondary pipe body with a smaller diameter, wherein the secondary pipe body and the main pipe body are both in the shape of a hollow circular tube, the secondary pipe body is arranged at the upper end of the main pipe body and connected to the main pipe body through a tapered neck, and the axis of the inner hole of the secondary pipe body is not coaxial with the axis of the inner hole of the main pipe body;

[0006] The wall thickness of the main pipe body is greater than the wall thickness of the auxiliary pipe body;

[0007] The tapered neck is configured to be a tapered tube, and 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 auxiliary pipe body, and the wall thickness of the lower end of the tapered neck is the same as that of the main pipe body.

[0009] As a preferred technical solution of the utility model, the outer diameter of the main pipe is 50.0-135.0 mm, and the wall thickness of the main pipe is 8.5-12.0 mm;

[0010] The outer diameter of the auxiliary tube body is 19.5-50.0 mm, and the wall thickness of the auxiliary tube body is 4.5-8.0 mm.

[0011] As a preferred technical solution of the utility model, the height of the main tube is 115.8 mm and the outer diameter is 66.8 mm; the height of the auxiliary tube is 26.0 mm and the outer diameter is 20.6 mm.

[0012] 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 auxiliary tube is 4.8 mm.

[0013] As a preferred technical solution of the utility model, the distance between the axis of the inner hole of the auxiliary tube body and the axis of the inner hole of the main tube body is 5.0-25.0 mm; the height of the tapered neck is 31.5-55.0 mm.

[0014] As a preferred technical solution of the present utility model, the height of the tapered neck is 36.0 mm.

[0015] As a preferred technical solution of the utility model, the main pipe body, the tapered neck and the auxiliary pipe body are formed into an integral structure by forging.

[0016] Beneficial effects of the utility model: Compared with the prior art, the utility model is manufactured into an integrated structure through integral forging, which 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 is greater than the wall thickness of the auxiliary pipe 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

[0017] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the structure viewed from above.

[0019] In the figure: 1, auxiliary pipe body, 2, tapered neck, 3, main pipe body. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0021] like Figure 1 and Figure 2 As shown, an eccentric pipe connection includes a main pipe body 3 with a larger diameter and a sub-pipe body 1 with a smaller diameter, the sub-pipe body 1 and the main pipe body 3 are both set to be hollow circular tube shapes, the sub-pipe body 1 is arranged at the upper end of the main pipe body 3 and is connected to the main pipe body 3 through a tapered neck 2, the axis of the inner hole of the sub-pipe body 1 is not coaxial with the axis of the inner hole of the main pipe body 3; the wall thickness of the main pipe body 3 is greater than the wall thickness of the sub-pipe body 1; the tapered neck 2 is set to be a tapered tube, and 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 sub-pipe body 1, and the wall thickness of the lower end of the tapered neck 2 is the same as the wall thickness of the main pipe body 3.

[0022] The outer diameter of the main body 3 is 50.0-135.0 mm, and the wall thickness of the main body 3 is 8.5-12.0 mm; the outer diameter of the auxiliary body 1 is 19.5-50.0 mm, and the wall thickness of the auxiliary body 1 is 4.5-8.0 mm; the height of the tapered neck 2 is 31.5-55.0 mm.

[0023] In this embodiment, the main body 3 has a height of 115.8 mm and an outer diameter of 66.8 mm; the auxiliary body 1 has a height of 26.0 mm and an outer diameter of 20.6 mm. The wall thickness of the main body 3 is 9.1 mm; the wall thickness of the auxiliary body 1 is 4.8 mm; the distance between the inner hole axis of the auxiliary body 1 and the inner hole axis of the main body 3 is 5.0-25.0 mm; the height of the tapered neck 2 is 36.0 mm. The main body 3, the tapered neck 2 and the auxiliary body 1 are formed into an integral structure by forging.

[0024] 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. An eccentric pipe, comprising a main pipe body with a larger diameter and a secondary pipe body with a smaller diameter, wherein the secondary pipe body and the main pipe body are both in the shape of a hollow circular tube, the secondary pipe body is arranged at the upper end of the main pipe body and connected to the main pipe body through a tapered neck, and is characterized by: The axis of the inner hole of the secondary tube body is not coaxial with the axis of the inner hole of the main tube body; The wall thickness of the main pipe body is greater than the wall thickness of the auxiliary pipe body; The tapered neck is configured to be a tapered tube, and 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 auxiliary pipe body, and the wall thickness of the lower end of the tapered neck is the same as that of the main pipe body.

2. The eccentric pipe according to claim 1 is characterized in that: The outer diameter of the main pipe is 50.0-135.0 mm, and the wall thickness of the main pipe is 8.5-12.0 mm; The outer diameter of the auxiliary tube body is 19.5-50.0 mm, and the wall thickness of the auxiliary tube body is 4.5-8.0 mm.

3. The eccentric pipe according to claim 2 is characterized in that: The height of the main pipe body is 115.8 mm and the outer diameter is 66.8 mm; the height of the auxiliary pipe body is 26.0 mm and the outer diameter is 20.6 mm.

4. The eccentric pipe according to claim 3 is characterized in that: The wall thickness of the main pipe body is 9.1 mm; the wall thickness of the auxiliary pipe body is 4.8 mm.

5. The eccentric pipe according to claim 1 is characterized in that: The distance between the axis of the inner hole of the auxiliary tube body and the axis of the inner hole of the main tube body is 5.0-25.0 mm; the height of the tapered neck is 31.5-55.0 mm.

6. The eccentric pipe according to claim 5 is characterized in that: The height of the tapered neck is 36.0 mm.

7. The eccentric pipe according to claim 1 is characterized in that: The main pipe body, the tapered neck and the auxiliary pipe body are formed into an integral structure by forging.

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