Integral inner double-spiral steel pipe with good positioning performance

An integral, double-helix technology, applied to pipe components, pipes/pipe joints/fittings, flange connections, etc., can solve problems such as bolt corrosion and increased difficulty in disassembling inner double-helix steel pipes

Inactive Publication Date: 2021-11-02
TIANJIN BOAI STEEL PIPE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides an integrated inner double-helix steel pipe with good positioning, which has the advantages of being convenient to seal the connection, solves the problem that the liquid is easy to flow out from the gap, and makes the inner double-helix steel pipe splicing The fixed bolts are corroded, which makes it more difficult for the staff to disassemble the inner double helix steel pipe

Method used

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  • Integral inner double-spiral steel pipe with good positioning performance
  • Integral inner double-spiral steel pipe with good positioning performance
  • Integral inner double-spiral steel pipe with good positioning performance

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] see Figure 1-Figure 8 , the present invention provides a technical solution: an integral double-helical steel pipe with good positioning, including a first helical tube 1 and a second helical tube 2, the first helical tube 1 and the second helical tube 2 are in the existing structure Without going into too much detail, the right end of the first helical tube 1 is provided with a first fixed block 3, and the left end of the second helical tube 2 is prov...

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Abstract

The invention relates to the technical field of spiral steel pipes, and discloses an integral inner double-spiral steel pipe with good positioning performance. The integral inner double-spiral steel pipe comprises a first spiral pipe and a second spiral pipe; a first fixed block is arranged at the right end of the first spiral pipe; a second fixed block is arranged at the left end of the second spiral pipe; the first fixed block and the second fixed block are fixed through a bolt; and a power groove is formed in the left side of the first fixed block. According to the integral inner double-spiral steel pipe with the good positioning performance, a second air bag can be tightly attached to the inner wall of a sealing groove and the inner wall of a containing groove through the plasticity of the second air bag, so that sealing of the first fixed block and the second fixed block is achieved, and the splicing sealing performance of the first spiral pipe and the second spiral pipe is enhanced; and the situation that after the first spiral pipe and the second spiral pipe are spliced, liquid flows into the external environment to pollute the external environment is avoided, and a worker can more smoothly convey the liquid through the first spiral pipe and the second spiral pipe.

Description

technical field [0001] The invention relates to the technical field of spiral steel pipes, in particular to an integrated inner double-helix steel pipe with good positioning. Background technique [0002] Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process. It is easy to control the welding quality; some current inner double helix steel pipes are fixed by bolts when splicing; but the inner double helix steel pipes are fixed by bolts. After fixing, a gap is likely to appear between the two inner double helix steel pipes, so that when the liquid inside the inner double helix steel pipe flows, the liquid is easy to flow out from the gap, and the bolts fixed by the inner double helix steel pipes are corroded. Thereby, it is more difficult for the staff to dismantle the inner double-helix steel pipe, and at the same time, the liquid ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16L23/032F16L23/024F16L23/16F16L55/24
CPCF16L23/032F16L23/024F16L23/16F16L55/24
Inventor郭文强
OwnerTIANJIN BOAI STEEL PIPE