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A construction method for dismantling pipelines with heat-insulating and wear-resistant linings

A technology of heat-insulating and wear-resistant lining and construction method, which is applied in construction, building maintenance, building construction, etc., can solve the problems of high labor intensity, long construction period, and high construction cost, so as to reduce labor intensity, shorten construction period, The effect of reducing the difficulty of cutting

Active Publication Date: 2020-04-17
CHINA NAT CHEM ENG THIRD CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional method, the amount of scaffolding erection is large; the construction personnel work at high altitude during the whole process, and the construction space is narrow and the safety is poor; the labor intensity, long construction period and high construction cost of manually planing and chiseling refractory bricks and other lining materials; A large amount of dust seriously affects the health of construction workers

Method used

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  • A construction method for dismantling pipelines with heat-insulating and wear-resistant linings
  • A construction method for dismantling pipelines with heat-insulating and wear-resistant linings
  • A construction method for dismantling pipelines with heat-insulating and wear-resistant linings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Figure 1 to Figure 6 It is the schematic diagram of the construction method of this implementation. The pipelines removed in this example are high-altitude vertical pipelines 2 and low-altitude vertical pipelines 3. There are refractory brick linings 4 in the high-altitude vertical pipelines 2 and low-altitude vertical pipelines 3. The nominal diameter of the pipeline is 2400mm. The total height of the pipeline is 40 meters, the specific steps are as follows,

[0045] (1) Removal of high-altitude vertical pipeline 2:

[0046] Construction workers work on the cage platform,

[0047] a. If figure 1 As shown, install lugs 1 on the high-altitude vertical pipeline 2 and the low-altitude vertical pipeline 3;

[0048] b. If figure 2 As shown, 2 pairs of stoppers 5 are installed on both sides of the section 7 to be cut on the high-altitude vertical pipeline 2, and 2 pairs of stoppers are distributed at the two ends of the diameter of the high-altitude vertical pipeline 2,...

Embodiment 2

[0059] Figure 7 to Figure 8 It is a schematic diagram of the construction method implemented in this example. The pipeline to be demolished in this example is a high-altitude horizontal pipeline with a refractory brick lining 4 inside the pipeline. The nominal diameter of the pipeline is 800mm, and the total length of the pipeline is 300 meters. The demolition is divided into 8 to 10 sections ,Specific steps are as follows,

[0060] Construction workers work on the cage platform,

[0061] a. Install lifting lug 1 on the high-altitude horizontal pipeline;

[0062] b. Install 2 pairs of stoppers 5 on both sides of the section 7 to be cut on the high-altitude horizontal pipeline, 2 pairs of stoppers are distributed at both ends of the diameter of the high-altitude horizontal pipeline, and a jack 6 is installed between each pair of stoppers 5;

[0063] c. Pre-cut the high-altitude horizontal pipeline 13 along the circumference of the section 7 to be cut, and the pre-cut depth ...

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Abstract

The invention provides a demolishing construction method for a pipeline with a thermal-insulating and abrasion-resistant lining. The demolishing construction method comprises the following steps thata hanging lug is mounted on the pipeline; paired stop blocks are mounted on the two sides of a to-be-cut section of the pipeline, and a jack is mounted between each pair of stop blocks; precutting isconducted on the pipeline along the circumference of the to-be-cut section; the jacks are started, so that the pipelines on the two sides of the cut section are initially separated; deep cutting is conducted along an initially separated clearance of the pipelines, so that the pipelines on the two sides of the cut section are completely separated; blocking plates are inserted in the cur clearance during deep cutting; the jacks are removed, and reinforcing ribbed plates are mounted on the stop blocks where the jacks are removed; the reinforcing ribbed plates and the blocking plates are welded, so that openings of the cut pipelines are closed through the blocking plates; and the cut pipelines are moved away through a crane. According to the demolishing construction method for the pipeline with the thermal-insulating and abrasion-resistant lining, the labor intensity is advantageously reduced, construction safety is improved, the construction period is shortened, and the construction costis reduced.

Description

technical field [0001] The invention belongs to the field of dismantling chemical pipelines, in particular to a construction method for dismantling pipelines with heat-insulating and wear-resistant linings. Background technique [0002] A large number of pipeline demolition work is involved in the chemical transformation project, including the removal of a large number of pipelines with heat-insulating and wear-resistant villages, such as pipelines with heat-insulating and wear-resistant linings such as cement, refractory bricks, and mortar. The traditional demolition method is to first set up scaffolding and an operating platform, and the construction personnel will plan and remove the lining material on the operating platform, and then remove the pipe after cleaning the planed and chiseled materials. In the traditional method, the amount of scaffolding erection is large; the construction personnel work at high altitude during the whole process, and the construction space i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/08
CPCE04G23/08E04G2023/087
Inventor 陈春海
Owner CHINA NAT CHEM ENG THIRD CONSTR
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