Welding-free steel pipe connecting process

A welding-free, steel pipe technology, applied in non-removable pipe connections, pipes/pipe joints/fittings, manufacturing tools, etc., can solve problems such as low efficiency, cumbersome operation, affecting laying efficiency, etc., to achieve high connection efficiency and ensure sealing effect, the effect of enhancing the extrusion strength

Inactive Publication Date: 2021-07-23
朱少强
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When carrying out long-distance liquid transportation, steel pipes often need to be spliced ​​with each other to extend the transportation path. In the prior art, welding is generally used to connect two steel pipes, but this method is relatively cumbersome to operate and has low efficiency, which affects the overall performance. laying efficiency

Method used

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  • Welding-free steel pipe connecting process
  • Welding-free steel pipe connecting process
  • Welding-free steel pipe connecting process

Examples

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Embodiment 1

[0047] see figure 1 , in the figure a represents the end of the steel pipe, b represents the tail of the steel pipe, the inner diameter of the end of the steel pipe is slightly larger than the outer diameter of the tail of the steel pipe, a welding-free steel pipe connection process, including the following steps:

[0048] S1. First, align the tail of one steel pipe with the end of the other steel pipe;

[0049] S2. Twist one of the steel pipes to adjust the position, so that the outer convex rubber block 2 at the tail is misaligned with the inner concave limit groove 3 at the end, and then insert the tail into the end until it stops when it cannot be inserted;

[0050] S3. Rotate the tail again to make the outer convex rubber block snap into the inner concave limit groove;

[0051] S4. Heat the outer wall of the end, rotate while heating, end the heating after 2-3 minutes, and after cooling down, fill the glass glue toward the gap between the end and the tail to complete the...

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Abstract

The invention discloses a welding-free steel pipe connecting process, and belongs to the field of steel pipes. The welding-free steel pipe connecting process comprises the following steps of through extrusion matching of an outer convex rubber block and an inner concave limiting groove, enabling the head and the tail of steel pipes to be in extrusion connection, and matching with heating operation, enabling part of the outer convex rubber block to be molten in a flowing state and permeate into a semispherical clamping ring to form a sealing layer, and effectively ensuring the sealing effect. Compared with the prior art, welding operation is not needed, the connecting efficiency is higher, under the action of the uneven inner concave limiting groove, on one hand, the extrusion contact area of the outer convex rubber block and the inner concave limiting groove is increased, the extrusion strength of the outer convex rubber block and the inner concave limiting groove is enhanced, on the other hand, sharp thorns pierce a rubber storage bag to enable metal quick-drying rubber to overflow, therefore, the connecting strength of the outer convex rubber block and the inner concave limiting groove is effectively enhanced, part of the sharp thorns pierce into the outer convex rubber block, the outer convex rubber block is effectively limited to be not prone to moving in the inner concave limiting groove, and the connecting strength between the two steel pipes is effectively guaranteed through multiple actions.

Description

technical field [0001] The invention relates to the field of steel pipes, in particular to a welding-free steel pipe connection process. Background technique [0002] A steel pipe is a steel material with a hollow section whose length is much greater than its diameter or circumference. According to the cross-sectional shape, it can be divided into circular, square, rectangular and special-shaped steel pipes; according to the material, it can be divided into carbon structural steel pipes, low alloy structural steel pipes, alloy steel pipes and composite steel pipes; Steel pipes for thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment, etc.; according to the production process, they are divided into seamless steel pipes and welded steel pipes, among which seamless steel pipes are divided into hot-rolled and cold-rolled (drawn) Two kinds, welded steel pipe is divided into straight seam welded steel pipe and spiral sea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P11/02B23P19/02F16L13/00F16L13/11
CPCF16L13/004F16L13/11B23P19/02B23P11/025
Inventor 朱少强
Owner 朱少强
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