Simplified water beam vaporization cooling system of steel-rolling stepping heating furnace

Abstract

The invention relates to a simplified water beam vaporization cooling system of a steel-rolling stepping heating furnace. The system comprises a stepping beam circulation loop, a fixed beam circulation loop and a water supply loop, wherein the water supply loop comprises an atmospheric thermal deaerator, a deoxidization water tank arranged at the lower part of the atmospheric thermal deaerator, and an electric water supply pump, which is connected in series to a deoxidization downcomer pipe at the lower part of the deoxidization water tank and connected to a steam pocket through a high-pressure water supply pipe, the high-pressure water supply pipe is provided with a high-pressure water supply branch pipe, and a stepping circulation loop downcomer pipe in the stepping beam circulation loop and a fixed circulation loop downcomer pipe in the fixed beam circulation loop are provided with efflux energy transfer devices which are respectively connected to the high-pressure water supply branch pipe. The simplified water beam vaporization cooling system of the steel-rolling stepping heating furnace, which is provided by the invention, integrates the three independent processes of deoxidization, water supply and circulation into a continuous process with low energy consumption to reduce the loading capacity, shorten the power consumption time, and has the advantages of high efficiencyand energy saving.

Description

technical field [0001] The invention relates to a water beam vaporization cooling system of a steel rolling walking heating furnace, in particular to a simple water beam vaporization cooling system of a steel rolling walking heating furnace which achieves the purpose of high efficiency and energy saving through optimized equipment and simplified connections. Background technique [0002] Water beam vaporization cooling of walking heating furnace for steel rolling is an industry technology commonly used in countries all over the world. The characteristics of this technology are: the scale and shape of the stepping heating furnace of different steel rolling production lines are different, but the process flow of the vaporization cooling system is the same, and it is composed of three processes of deaeration, water supply and forced circulation in sequence along the direction of cooling water flow. Evaporative cooling system. In this process flow, the first deaeration process ...

AI Technical Summary

Problems solved by technology

In this kind of process, which is independent of each other and only connected by pipelines, each process must consume energy to push the cooling water to flow with water pumps to complete the process. In order to ensure that the cooling water has a certain flow head, each process Processes all choose the customary practice of excess energy consumption. As a result, the total energy consumed by the cooling water flowing through the three intermittent processes exceeds the energy required by the logistics of the entire system as a continuous process, and a considerable part of the energy is used for useless work.

In addition, there are also two places in the pipeline from the water outlet branch pipe of the walking beam to the steam drum in the existing technology of the stepping circulation circuit that do not conform to the principle of gravity, and the technical bias that increases the resistance loss of the pipeline needs to be corrected: the first is that it is lower than the walking beam The U-shaped pipe section in which the water outlet branch first flows downwards and then upwards; the second is an inverted U-shaped pipe section that flows upwards and then downwards above the water level of the steam drum

Since the circulating water flows back and forth between the two U-shaped pipe sections, the pipe length and resistance loss of the circulating loop from the outlet of the water beam to the steam drum will be significantly increased, causing the system to consume more energy.

Therefore, the existing walking heating furnace vaporization cooling technology only achieves the purpose of being usable from a functional point of view, and is still in a low-level state of loose system, poor function, and high energy waste cost in terms of process optimization and energy-saving technology.

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