With the continuous decrease of temperature, the antifreeze and thermal insulation of water meter has become the key work of the water management department, because the water meter is frozen and damaged, first of all, the water meter glass is frozen and cracked, because it is the most vulnerable. Secondly, the water meter housing may be cracked, resulting in water leakage of the water meter, or the movement may be damaged and cannot be measured accurately. Most of the impact on Residents’ production and life has also increased the additional work of the water department. In order to prevent the water meter from freezing, the following measures shall be taken:
1. Before installation, the minimum temperature in winter in this area should be determined. Generally, it is recommended to install it in a ground well with a depth of about 50-70cm in rural areas in the north. The ground temperature in winter can protect it from the cold, and covering some dry firewood on the upper part of the ground well can increase the cold protection effect.
2 the installation of urban areas is mainly used in building wells. If it is a separate corridor, the winter temperature will not freeze the water meter in general. However, it is necessary to strengthen the inspection and close the water meter protection door. If it is a well connected well, it is necessary to pay attention to it. Cold air is very easy to freeze the water meter.
3. In areas where conditions permit, a water meter insulation sleeve can be set for the water meter. This water meter insulation sleeve has two kinds of cotton and waterproof cloth. The inner core is industrial white silk wool, which has a very good cold protection effect and is relatively inexpensive. It can reduce the loss caused by water meter freezing, and the water meter insulation sleeve can be reused.
4. Heat tracing device can be added to the water meter and its pipeline. This method has great construction difficulty and high cost, depending on the situation.
