Laminar cooling header

By installing a pressure equalization device with baffles inside the main pipe, the inner cavity of the manifold is divided into multiple small water supply chambers, which solves the problem of uneven water spray volume, achieves uniform water pressure distribution along the length of the main pipe, and improves the cooling effect of hot-rolled strip steel.

CN115921555BActive Publication Date: 2026-07-24CHINA ERZHONG GRP DEYANG HEAVY IND
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Patent Information

Application Number
CN202211639401.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-20
Publication Date
2026-07-24
Estimated Expiration
2042-12-20

AI Technical Summary

Technical Problem

In existing hot-rolled laminar flow cooling manifolds, the water spray volume is uneven along the length of the main pipe, resulting in uneven cooling of the hot-rolled strip and affecting the quality of the strip.

Method used

A pressure equalization device is installed inside the main pipe. The inner cavity of the manifold is divided into multiple water supply chambers by several baffles of the pressure equalization device. The difference in the length of the baffles is used to distribute the water source to different positions, so as to achieve uniform water pressure distribution.

Benefits of technology

The design of the baffles reduces the problem of uneven water spraying, making the height of the water jets from each nozzle more consistent, thus improving the uniformity and quality of strip cooling.

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Abstract

The laminar flow cooling manifold of the present application belongs to the field of hot-rolling laminar flow cooling manifold, and aims to make the height of water column sprayed by each nozzle tend to be consistent. The laminar flow cooling manifold comprises a main pipe and nozzles arranged on the main pipe in the axial direction, one end of the main pipe is an open water inlet end, and the other end is a closed closed end; an equalizing device is arranged in the main pipe; the equalizing device comprises a plurality of partitions which are evenly distributed around the main pipe in the axial direction; the inner ends of the partitions are fixed together, and the outer ends extend to the inner wall of the main pipe in the radial direction; a water supply small cavity is formed by surrounding the adjacent two partitions and the inner wall of the main pipe between the adjacent two partitions; and the extension lengths of the partitions in the axial direction of the main pipe are different; the nozzles are in communication with the water supply small cavity. The water inlet source is divided into multiple independent water inlet sources in the main pipe, and each water inlet source is finally supplied to different positions of the main pipe, thereby reducing the problem of uneven water spraying caused by the influence of pressure relief of the front nozzles on the nozzles at different positions, and making the height of water column sprayed by each nozzle tend to be consistent.
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