Structure type of common mechanical heat meter

The main control parameters of the mechanical heat meter are: nominal diameter DN, common flow, maximum flow, minimum flow, rated pressure, maximum pressure loss, temperature range, temperature difference range, etc.

The flow rate of the heat medium is measured by measuring the rotational speed of the impeller. Classified according to size, it can be divided into small caliber (≤40mm) and large caliber (≥50mm). According to the internal structure classification, the small-caliber flow sensor is further divided into a single-flow type and a multi-stream type, wherein the single-flow type has a short life of the impeller due to uneven water flow impact. The large diameter is divided into two types: horizontal screw type and vertical screw type. The former can be installed horizontally or vertically, and the latter can only be installed horizontally.

The structural types of several common mechanical water meters include:

1. Compact heat meter: This type of heat meter can be regarded as a combined heat meter in the form identification or factory calibration process, but after the calibration is completed, its components must be processed according to the integral heat meter.

2, combined heat meter: this type of mechanical heat meter, the three main parts of the heat meter can be separated, and the same type of heat meter can replace each other, but the need for the parts in the inspection Perform a split test.

3. Integral heat meter: refers to the totalizer, flow meter and temperature sensor of the heat meter. Two or more parts are theoretically inseparable, for example, the standard movement in the mechanical heat meter. The accumulator and flow meter in the heat meter cannot be replaced at will, and the inspection can only be tested as a whole.