Analysis of the choice of electric heating mode of mine water supply

Published on:

2023-05-25 10:33

In the northern regions of my country, the lowest temperature in winter is usually below minus 10 °C, and most of the coal mines in my country are located in the northern regions. Under the influence of geological conditions and ambient temperature, the phenomena of splashing water and freezing of the borehole occur. Once the water supply lines located in the wellbore freeze, the normal safe operation of the mine will be seriously affected. The self-limiting temperature electric heating cable heats and insulates the water supply pipeline, features high reliability, low power consumption, easy installation and maintenance, and easy implementation of centralized automatic control.

Electric heating consists in the use of electric heating to compensate for the heat loss of the heated body (container, pipe, etc.) The goal of the lowest energy consumption and the lowest complex cost is based on the principle of optimal heat transfer distribution and low energy consumption. The form of heat dissipation is uniform heat dissipation in length or over a large area, and the temperature gradient is small and stable, which is suitable for long-term use.

The place where the heating cable is used is in the coal mine shaft, and the product must meet the explosion-proof standard of the coal mine. Huaning heating cable can be used in explosive (classified) locations and in tropical explosive environments.

The electric heating has a small volume, a large contact area, and small transmission losses, while in steam heating and hot water heating, it is necessary to add heating lines to contact and transfer heat, and the transmission losses are large.

The electric heating has a small volume, a large contact area, and small transmission losses, while in steam heating and hot water heating, it is necessary to add heating lines to contact and transfer heat, and the transmission losses are large.

The electric heating can be controlled automatically, but the steam and hot water heating is difficult to automatically monitor and adjust the heating heat according to the temperature change of the pipeline to adapt to the seasonal and daily changes in ambient temperature, and the excess heat caused by the temperature change at the beginning and end. and compensate along the way. The integrated thermal efficiency of electric heating is very high. According to the statistics of the ten largest power plants in the country, integrated thermal efficiency from power plants to consumers (pipes, containers, etc. E.) is 29.4 ~ 35%, and the efficiency of heating electric heating is close to 100%.

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