High-density straight collecting pipe cooling device

Abstract

The invention provides a high-density straight collecting pipe cooling device and relates to a high-density straight collecting pipe cooling device mainly used for ultra fast cooling in the thermal treatment process of a hot steel blank. The device comprises a liquid conveying pipe connected with a liquid conveying joint, wherein the outside of the liquid conveying pipe is provided with a stream guidance cavity in which one section of the liquid conveying pipe is arranged; the stream guidance cavity is provided with a plurality of jet flow spray pipes; the pipe wall of the liquid conveying pipe is equidistantly provided with diameter-equivalent holes which are ranked in the same straight line, communicate the liquid conveying pipe and the stream guidance cavity and are longitudinally arranged; the diameter-equivalent holes are right behind the jet flow spray pipe; the section of the liquid conveying pipe in the stream guidance cavity is equidistantly provided with diameter-equivalent macropores which penetrate through the liquid conveying pipe and are longitudinally arranged; and a gap is reserved between the liquid conveying pipe and the inner wall of the stream guidance cavity so that liquid can flow to the jet flow spray pipe from the gap between the liquid conveying pipe and the inner wall of the stream guidance cavity. The cooling device has the advantages that a high-density jet flow field is generated, the impact force of the flow field is large, the flow is uniform, and the coverage area is large; and complete and fast cooling of the hot steel black can be achieved. Thus, the cooling device has a positive technical effect on improvement of quality of refined steel.

Description

technical field [0001] The invention relates to a high-density straight header cooling device mainly used for ultra-rapid cooling in the heat treatment process of hot steel slabs. Background technique [0002] With the rapid development of my country's iron and steel industry, my country has become the world's largest producer of crude steel, and is currently developing from producing crude steel to producing refined steel. An important process in the production of fine steel is the heat treatment process of steel. The quality of heat treatment directly affects the quality of fine steel, and the cooling rate directly affects the quality of heat treatment. The current cooling devices are often unable to quickly and evenly cool the hot steel billet. Often, one section of the cooling section has a good cooling effect, while the other section has a poor cooling effect, resulting in the quality of the produced refined steel not being effectively guaranteed. Contents of the inve...

AI Technical Summary

Problems solved by technology

The current cooling device is often unable to quickly and evenly cool the hot steel billet. It is often that one section of the cooling effect is good, while the other section of the cooling effect is not good, resulting in the quality of the produced steel can not be effectively guaranteed.

Images