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Method for efficiently manufacturing heat exchange pipes, and production line

A technology of a heat exchange coil and a manufacturing method, which is applied in the field of manufacturing process of the heat exchange coil, can solve the problem that inner micro-ribbed pipes or grooved pipes cannot be used, and achieve the effects of low production cost, efficient operation and reasonable design.

Inactive Publication Date: 2011-05-18
BAC DALIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that stainless steel and carbon steel pipes cannot use inner micro-finned pipes or grooved pipes. The manufacturing method of high-efficiency heat exchange coils has a simple process and is easy to operate, and provides a new production process for stainless steel and carbon steel pipes. , to produce high-performance products

Method used

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  • Method for efficiently manufacturing heat exchange pipes, and production line
  • Method for efficiently manufacturing heat exchange pipes, and production line
  • Method for efficiently manufacturing heat exchange pipes, and production line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] High-efficiency heat exchange coil production line, including pipe production equipment, of which the pipe production equipment includes uncoiler 1, embossing device 18, shear butt welding equipment 2, horizontal spiral loop storage machine 4, lead frame 3, forming machine 5. Welding device 6, grinding machine 7, cooling device 8, sizing device 9, eddy current flaw detection 10, straightening unit 11 and cutting device 12, the above equipment are dynamically connected in sequence to form a pipe production line.

Embodiment 2

[0025] The high-efficiency heat exchange coil production line is a continuous pipe production line, including pipe production equipment and bent pipe production equipment. The pipe production equipment is the same as that of Embodiment 1, and the output of the pipe production equipment is directly input into the bent pipe production equipment through the transmission equipment 13. The pipe bending production equipment includes a blanking slide 14, a pipe bending platform 15, a numerically controlled pipe bending machine 16, and a sizing device 17, which are dynamically connected in sequence to form a pipe bending production line.

Embodiment 3

[0027] The manufacturing method of high-efficiency heat exchange coil adopts the production line described in Example 1, and the steel strip is used as the raw material for online continuous production of pipes. After the steel strip is uncoiled, it is first carried out on-line continuous embossing, so that the steel 19 strip is formed with grooves before curling and rounding. The surface of the groove 20, the steel strip after rolling and forming is leveled to the flatness requirements of the pipe, and the material is stored by the looper and then entered into the forming pre-bending machine for forming. After forming, the axial welding is carried out online, and the burr is removed after online cooling The rough tube is obtained, and after cooling, it is sized and cut for later use.

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Abstract

The invention belongs to the field of switching equipment, and discloses a method for efficiently manufacturing heat exchange pipes. Steel belts are used as raw materials for online continuous pipe manufacturing and the method comprises the following steps of: after the steel belts are uncoiled, performing online continuous embossing to ensure that surfaces with grooves are formed before the steel belts are curled and rounded off; flattening the steel belts molded through rolling to meet the requirement of pipe manufacturing on flatness and storing by an accumulator, and feeding into a molding pre-bending machine and molding; after molding, performing axial welding on line; after cooling on line, polishing and deburring to manufacture blank pipes; and after cooling, sizing for later use. In the method, a novel process for manufacturing an embossed pipe is provided, embossing equipment is installed in a process for manufacturing pipelines by welding steel pipes, embossing is performed on the surfaces of carbon steel or stainless steel belts used by the conventional continuous pipe manufacturing process before rolling and curling, and the inner surfaces or the outer surfaces of the welded steel pipes have embossed groove structures with different specifications, convection, condensation or boiling heat transfer coefficients of heat transfer working media in the pipes are improved. The process is small in additional energy consumption, is convenient to implement and has high production efficiency.

Description

technical field [0001] The invention belongs to the field of heat exchange equipment, in particular to a manufacturing process of heat exchange coils. Background technique [0002] Heat exchangers are widely used in industrial fields such as petroleum, chemical industry, electric power and metallurgical manufacturing. In particular, tubular heat exchange equipment is used as the main form of partition heat exchange process. There will be nearly a hundred kinds of high-efficiency heat exchange tubes introduced in the literature. However, there are relatively few enhanced heat transfer tubes that can be widely used. Especially for the strengthening of the heat transfer process in the tube, not only the improvement of the heat transfer coefficient, but also the increase of the resistance coefficient must be considered. For copper heat exchange tubes, due to their soft texture, they can be processed into various reinforced tubes such as internal micro-fins, rolled groove tubes,...

Claims

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Application Information

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IPC IPC(8): B23P15/26
Inventor 徐雄冠姜文俊童伟邓凯翔周兴东
Owner BAC DALIAN
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