The structural characteristics and advantages of long diameter nozzles

Long diameter nozzle is a flow measurement device mainly used in high voltage or high temperature and high pressure situations in the power industry. It has the characteristics of high temperature and high pressure resistance, impact resistance, long service life, etc., with a large measurement range and high accuracy. The following is a detailed introduction to long diameter nozzles:

The long diameter nozzle consists of the following main parts:

Entrance contraction part: usually composed of a 1/4 ellipse, allowing fluid to smoothly enter the throat.

Cylindrical throat: It is the area where the fluid velocity reaches its maximum and is tangent to the contracted part of the inlet.

Exit end face: Ensure that the fluid flows smoothly out of the nozzle.

This structure gives the long diameter nozzle the following advantages:

Small pressure loss: Compared to other throttling devices such as orifice plates, the pressure loss of long diameter nozzles is smaller, which helps to save energy.

Short required straight pipe section: The requirements for upstream and downstream straight pipe sections are lower, and the installation space is more flexible.

High precision: Stable outflow coefficient, good repeatability, suitable for high-precision measurement.

Corrosion resistance and wear resistance: Made of high-quality materials, suitable for various harsh working conditions.