CN203080011U - Improved dip downcomer of vacuum circulation refining furnace - Google Patents

Abstract

The utility model discloses an improved dip downcomer of a vacuum circulation refining furnace. The improved dip downcomer comprises a pipe body of the downcomer, and two argon cooling pipes are spirally coiled on the outer peripheral wall of the pipe body from top to bottom. A steel liner in the downcomer is cooled by annular flow gas in use, so that the expansion internal stress of the steel liner due to heating is reduced, the service life of refractory material of the downcomer can be obviously prolonged, and the consumption of the refractory material is further reduced.

Description

Improved Vacuum Circulation Refining Furnace Impregnation Downcomer

technical field

The utility model relates to an improved impregnation downcomer of a vacuum circulation refining furnace.

Background technique

The RH dipping tube is an important part of the RH vacuum tank. It works in the harsh environment of high temperature, high pressure and high wear. The service life of the RH dipping tube directly determines the refractory consumption and operation continuity of the RH furnace, which limits the operation of the RH furnace. An important bottleneck for rate improvement. In the ascending pipe of the existing RH dipping pipe, because the argon circulation gas pipeline is buried inside the refractory material, and the descending pipe is made of refractory material, the life of the ascending pipe and the descending pipe are not synchronized during use, and the descending pipe is always at high temperature and high heat. state, so the refractory material is easily corroded, and the ascending pipe is cooled by gas, so the life of the refractory material is longer than that of the descending pipe, resulting in a large difference in the life of the ascending pipe and the descending pipe, and the service life is inconsistent. higher consumption.

Contents of the invention

The purpose of the utility model is to provide an improved dipping downcomer of a vacuum circulation refining furnace, which can effectively prolong the service life of the downcomer and reduce production costs.

The purpose of this utility model is achieved in this way. An improved vacuum circulation refining furnace impregnated downcomer, including a downcomer body, and two argon cooling tubes are arranged on the outer peripheral wall of the tube body in a spiral shape from top to bottom. Tube.

In the utility model, an argon cooling pipe for circulating cooling is installed on the pipe wall of the descending pipe. The pipeline can be arranged in a double helix shape. The gas pipeline only cools the refractory material and does not blow into the molten steel, so it will not have any impact on the circulation and degassing of the molten steel. The amount of gas blown in can be manually intervened and adjusted , so that the service life of the refractory material of the descending pipe is increased, so as to shorten the life gap between the ascending pipe and the descending pipe, which helps to reduce the production cost.

Description of drawings

The utility model will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a front structural schematic diagram of the utility model.

Detailed ways

An improved vacuum cycle refining furnace impregnated downcomer, as shown in Figure 1, includes a downcomer body 3, and two argon cooling tubes 1 are arranged spirally on the outer peripheral wall of the tube body 3 from top to bottom ,2. The steel bladder inside the downcomer is cooled by the circulating gas during use, which reduces the internal stress of the expansion of the steel tank when heated, and can significantly increase the life of the refractory material of the downcomer, thereby reducing the consumption of refractory materials.

Claims (1)

1. an improved vacuum cycle refining furnace dipping downtake comprises the downtake body, and it is characterized in that: linear in the shape of a spiral from top to bottom coiling is being provided with two argon gas cooling tubes on the periphery wall of body.

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