Easily assembled lined nickel alloy composite pipe

By setting limiting end tubes at both ends of the outer tube and using a mechanical locking method to tighten the inner lining tube into the inner cavity of the outer tube, the problems of low assembly efficiency and inaccurate positioning caused by welding methods in the existing technology are solved. This enables rapid and stable assembly of nickel alloy composite steel pipes with inner lining, improving service life and assembly quality.

CN224516159UActive Publication Date: 2026-07-17JIANGSU SHUNLONG PIPE TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU SHUNLONG PIPE TECH CO LTD
Filing Date
2025-08-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the assembly process of existing nickel alloy-lined composite steel pipes, the welding method results in low assembly efficiency and difficulty in precise positioning, which affects assembly quality and service life.

Method used

The inner and outer tubes are equipped with limit ends at both ends using a mechanical locking method. The inner liner is screwed into the inner cavity of the outer tube by the limit end tubes, which achieves rapid assembly without welding and avoids deviation of the center point welding position.

Benefits of technology

This technology enables rapid assembly of nickel alloy-lined composite steel pipes, improving assembly efficiency and quality, reducing assembly time, and ensuring service life.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224516159U_ABST
    Figure CN224516159U_ABST
Patent Text Reader

Abstract

The application discloses a nickel alloy composite steel pipe convenient to assemble, which comprises an outer sleeve pipe and an inner lining pipe, the inner lining pipe is arranged in the inner cavity of the outer sleeve pipe, both ends of the outer sleeve pipe are provided with limiting end pipes, the two limiting end pipes extend to the inner cavity of the outer sleeve pipe and are screwed with the inner lining pipe, and both ends of the inner lining pipe are provided with extension pipes which are inserted into the inner cavities of the limiting end pipes and are in communication with the limiting end pipes. The nickel alloy composite steel pipe convenient to assemble is characterized in that the limiting end pipes are arranged at both ends of the outer sleeve pipe, the inner lining pipe is screwed in the inner cavity of the outer sleeve pipe in a mechanical locking mode, the position of the inner lining pipe is limited, the inner lining pipe is prevented from loosening, the nickel alloy composite steel pipe is rapidly assembled without welding, the trouble of repeatedly adjusting the centering point welding position is reduced, the service life of the nickel alloy composite steel pipe is affected due to the deviation of the centering point welding position between the two pipes is avoided, the assembly time is shortened, and the assembly efficiency and quality are improved.
Need to check novelty before this filing date? Find Prior Art

Claims

1. An internally lined nickel alloy composite pipe for ease of assembly, comprising: The outer tube (1) and the inner liner tube (2) are characterized in that the inner liner tube (2) is disposed in the inner cavity of the outer tube (1), and both ends of the outer tube (1) are provided with limiting end tubes (3), the two limiting end tubes (3) extend into the inner cavity of the outer tube (1) and tighten the inner liner tube (2), and both ends of the inner liner tube (2) are provided with extension tubes (21), the extension tubes (21) are inserted into the inner cavity of the limiting end tubes (3) and communicate with them.

2. The easily assembled nickel alloy-lined composite steel pipe according to claim 1, characterized in that, The inner wall of the outer tube (1) is provided with threaded grooves (101) at both ends. The two limiting end tubes (3) are installed in the inner cavity of the outer tube (1) through the threaded grooves (101) and are respectively clamped at both ends of the inner liner tube (2). The internal thread directions of the two threaded grooves (101) are opposite.

3. The easily assembled lined nickel alloy composite pipe of claim 1, wherein, The end face of the inner liner tube (2) is provided with a groove around the outside of the extension tube (21), and the limiting end tube (3) is fitted on the outside of the extension tube (21) and extends into the groove to be in close contact with the end face of the inner liner tube (2).

4. The easily assembled lined nickel alloy composite pipe of claim 1, wherein, The limiting end tube (3) is provided with a limiting end plate (31) for limiting its position at one end outside the outer tube (1), and the diameter of the limiting end plate (31) is the same as the diameter of the outer tube (1).

5. The easily assembled lined nickel alloy composite pipe of claim 4, wherein, The end face of the limiting end plate (31) is provided with a through port (311) that communicates with the limiting end tube (3), and the inner diameter of the through port (311) is the same as the inner diameter of the opening of the extension tube (21).

6. The easily assembled lined nickel alloy composite pipe of claim 5, wherein, The end face of the limiting end plate (31) surrounds the outside of the opening (311) and is provided with a stepped surface (312) on the inside of the limiting end tube (3). A sealing gasket (4) is provided on the end face of the stepped surface (312). One end of the extension tube (21) located in the inner cavity of the limiting end tube (3) is tightly attached to the end face of the stepped surface (312) through the sealing gasket (4).

7. The easily assembled lined nickel alloy composite pipe of claim 1, wherein, The diameter of the inner liner tube (2) is the same as the inner diameter of the opening of the outer sleeve tube (1) and the diameter of the limiting end tube (3).