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A kind of double-layer elbow processing method

A double-layer elbow and processing method technology, applied in the field of elbow processing, can solve problems such as difficult production of elbows, inability to set elbows, and difficult production process, so as to reduce production costs, increase heat exchange rate, and improve The effect of energy efficiency

Active Publication Date: 2020-11-03
张月文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Considering factors such as the heat exchange efficiency between the inner pipe and the outer pipe and the respective ventilation volumes of the inner pipe and the outer pipe, the ratio of the outer diameter of the inner pipe to the inner diameter of the outer pipe Larger, the elbow of the outer pipeline cannot be sleeved outside the elbow of the inner pipeline, or two straight pipes need to be sleeved and then bent to produce a double-layer elbow, the production process is difficult and difficult To ensure that the pipe wall is not damaged during bending, it is difficult to produce an elbow of this proportion with the existing technology. Therefore, a new processing method for double-layer elbows is urgently needed

Method used

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  • A kind of double-layer elbow processing method
  • A kind of double-layer elbow processing method
  • A kind of double-layer elbow processing method

Examples

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Effect test

Embodiment 1

[0029] like Figure 1-2 As shown, this embodiment provides a double-layer elbow processing method, when the required double-layer elbow is a 90-degree elbow, the following steps are included:

[0030] Material preparation: prepare a 90-degree inner elbow 2, a 90-degree outer elbow 4, two inner straight pipes 1 and two outer straight pipe 3;

[0031] Welding: Weld one inner straight pipe 1 at one end of the inner elbow 2, set the outer elbow 4 on the inner elbow 2 and make the other end of the inner elbow 2 lie on the outer elbow 4. Externally, one inner straight pipe 1 is welded at the other end of the inner curved pipe 2, and one outer straight pipe 3 is respectively welded at both ends of the outer curved pipe 4.

[0032] The length of the inner straight pipe 1 is greater than the length of the outer straight pipe 3 .

[0033] Due to the long length of the pipeline, when the temperature changes, the thermal expansion and contraction on the pipeline will be concentrated at...

Embodiment 2

[0035] like image 3 As shown, this embodiment provides a double-layer elbow processing method, when the required double-layer elbow is a 180-degree elbow, the following steps are included:

[0036] Material preparation: Prepare two 90-degree inner bends 2, two 90-degree outer bends 4, two inner straight pipes 1 and two 3 outer straight pipes;

[0037] Welding: one inner straight pipe 1 is welded at one end of each inner curved pipe 2, and one outer curved pipe 4 is sleeved on the inner curved pipe 2 welded with an inner straight pipe 1 at each end And the other end of the inner elbow 2 is located outside the outer elbow 4, the other ends of the two inner elbows 2 are welded together, and the adjacent ends of the two outer elbows 4 are welded on Together, one outer straight pipe 3 is respectively welded at the other end of each outer curved pipe 4 .

[0038] The length of the inner straight pipe 1 is greater than the length of the outer straight pipe 3, so as to facilitate ...

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Abstract

The invention discloses a double-layer elbow processing method and relates to the technical field of elbow processing. By welding a 90-degree inner elbow pipe, a 90-degree outer elbow pipe, an inner straight pipe and an outer straight pipe together step by step, a double-layer elbow with a relatively large ratio of an inner layer pipeline and an outer layer pipeline can be formed, so that a heat exchange rate of a fluid in the inside diameter and a fluid in the outside diameter is increased, and the purposes of increasing the energy utilization ratio and lowering the production cost are achieved.

Description

technical field [0001] The invention relates to the technical field of elbow processing, in particular to a double-layer elbow processing method. Background technique [0002] At present, many enterprises use steam for manufacturing and production, mainly by passing tap water into the boiler, and the boiler heats the water into a gaseous state, and then connects various steam-consuming equipment through the steam outlet. [0003] However, under normal circumstances, steam needs to flow through a long pipeline to reach the steam-consuming equipment. During this process, due to the temperature drop, the steam pressure loss is relatively large, and energy is wasted seriously. [0004] In terms of improving steam utilization, the existing technology uses double-layer pipelines to transport steam, that is, the steam generated by the boiler flows to the steam-water purification separator through the inner pipeline, and the steam purified by the steam-water purification separator f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K31/02B23K101/06
CPCB23K31/02
Inventor 张月文
Owner 张月文
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