一、overview：
ASME-PTC6 nozzle is a kind of high precision flow measurement device, is a long neck nozzle device with lower throat pressure β value. It is often used in the measurement of main flow in power plant, such as fan performance test, accurate measurement of condensate flow in power plant, measurement of feed water flow or steam flow in power plant, and compressor performance test and other high-precision flow test fields.
In order to accurately determine the performance of steam turbine, the measurement of main condensate flow rate is very important in the analysis of thermal economic benefit of modern power plant. According to ASME-PTC6 nozzle standard, high precision flow measurement using high precision differential pressure components, engineering applications using ASME nozzle. The device is recommended by the American Society of Mechanical Engineers (ASME) and its superior performance has been internationally recognized. ASME nozzles have become the preferred solution in many applications where high precision flow measurement is required.
二、ASME-PTC6 nozzle measurement principle
ASME-PTC6 nozzle adopts throttle flow sensor. Based on the long neck nozzle, a special pressure extraction method (throat pressure extraction) is used to make the flow sensor not only has the advantages of the traditional long neck nozzle, but also has the unique advantages of stable flow coefficient and high repeatability. ASME-PTC6 nozzle is a kind of high precision flow sensor.
三、ASME-PTC6 nozzle features
1. Easy installation, wide application, simple structure, mainly used for high-precision flow measurement.
2. The length of straight pipe is short and the pressure loss of nozzle is small.
3.High reliability and stable performance.
4. It can withstand high temperature, high pressure and impact.
5. Better corrosion resistance than orifice plate and longer service life.
6. Arc structure design can measure any liquid and other media.
7. Good repeatability, high precision, stable outflow coefficient.
8. It can be made of a variety of materials, used in a variety of performance testing occasions.
