Analysis on the selection method of differential pressure value of integrated orifice flowmeter
The integrated orifice flowmeter, also known as the differential pressure flowmeter, is composed of one test piece (saving piece) and secondary equipment (differential pressure transmitter and flow display). It is widely used for gas, steam and liquid flow. Measurement. It has simple layout, convenient repair, stable function, and reliable use. Orifice saving equipment is a standard saving piece. It can be produced directly in accordance with national regulations. 1. National standard GB2624-81<Flow measuring device and equipment Application>; 2. International standard ISO5167 <International standard arrangement rules for saving equipment> 3. Ministry of Chemical Industry Specification GJ516-87-HK06
The V-cone flowmeter uses the thrift effect of the V-cone in the flow field to measure the flow rate by detecting the upper differential pressure. Compared with ordinary throwing parts, it rotates the shackle structure and changes from the core hole to the ring smash.
Ultrasonic vortex flowmeters have strong vibration resistance, but the medium temperature can not be higher than 200 °C. If this category is exceeded, the ultrasonic probe will be relaxed. Ultrasonic vortex flowmeters can't be used in applications where the measured medium has significant pulsations, such as fluids at the reciprocating compressor outlet, because it has a high degree of slowness to small flows.
When the measured liquid design path enters the elliptical gear flowmeter, the pressure difference caused by the entrance port causes a pair of gears to rotate one after another, and the liquid metered by the initial moon-shaped cavity is continuously transported to the entrance, and the elliptical gear is rotated. The product of the number and the four times of each displacement is the total amount of liquid flow measured. Therefore, we can easily create from the measurement of the elliptical gear displacement meter. It depends on the pressure head of the measured medium to make the elliptical gear rotate and measure it, which is related to the motion pattern of the fluid.
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Roller shutter door , also known as "shutter door", lots of panel pieces connected together, fixed in the guide rail , take above reel as the center of rotation.
Roller shutter door is used for commercial facades, garages, shopping malls, hospitals, factories and mines and other public places or residential.Electric roller shutter door, especially for large openings, inconvenient to install the ground door , quick opening effect. Such as for the garage door, shopping mall fire shutter door.
Opening methods: Handing driving mode
Rope driving mode
Remote control driving mode
Electric switch driving mode
Roller Shutter Door,Galvanized Roller Shutter Door,Aluminum Roller Shutter Door,Transparent Roller Shutter Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffreezerdoor.com