Abstract: Fundamentals of Precession Vortex Gas Flowmeters When fluid flowing in an axial direction enters a flow sensor, the blade forces the fluid to rotate, thus creating a vortex in the center of the vortex shedding. The vortex flow swirls in the Venturi tube and reaches the constriction section where sudden throttling accelerates the vortex flow.
When the fluid flowing in the axial direction enters the flow sensor, the blades force the fluid to rotate, and thus generate a vortex flow in the center of the vortex shedding body. The vortex flow swirls in the Venturi tube and reaches the constriction section where sudden throttling accelerates the vortex flow. When the vortex flow enters the diffusion section, the precession-type secondary rotation is forced by the backflow effect. At this point, the rotational frequency of the vortex flow is proportional to the flow velocity of the medium and is linear. The weak charge signal detected by the piezoelectric sensor is amplified, filtered, and shaped by the preamplifier to become a pulse signal whose frequency is proportional to the flow velocity, and finally sent to a totalizer for count processing.
The flow totalizer is composed of temperature and pressure detection analog channels and micro processing units, and is equipped with an external transmission signal interface to output various signals. The microprocessor in the flow meter can check the density and pressure of the medium according to the detected temperature of the medium to complete the detection of the volume flow and mass flow of the medium. The microprocessor in the flowmeter can perform temperature and pressure compensation according to the gaseous equations and automatically perform compression factor corrections.
Advantages of precession swirl gas flow meter (1) Precession swirl gas flow meter can detect the temperature and pressure of the medium, followed by automatic compensation and automatic correction of the compression factor. It can also directly detect the standard volume of gas or the mass flow of saturated steam.
(2) Precession swirl gas flow meter adopts advanced microcomputer technology and high-performance integrated chip, and utilizes advanced micro-power consumption high technology, the whole machine has low power consumption. The flowmeter can run with long-term power supply of the internal battery, and can also be operated by external power supply.
(3) The flowmeter adopts LCD display, which is clear and intuitive, and the reading is convenient. With pulse signal output, it can also output 4～20RAA standard analog signal according to user's needs.
(4) Using RS485 interface with the host computer networking. Each host computer can carry 64 flow meters, and only need two communication lines. The installation cost is low and user-friendly management is convenient.
Summary From the point of view of the use of the oil field, the precession vortex flowmeter has stable performance and low maintenance. Using the data obtained from the precession vortex gas flowmeter, it is possible to analyze and study changes in the production of wells in the unit block at the Japanese mouth, and to achieve targeted management and construction.
PE Stretch Film
Stretch film is a commonly used name for multi-layer elastic polyethylene film, manufactured with the use of the so-called [CAST" film extrusion technology.Linear low density polyethylene (LLDPE) is the base material for manufacturing stretch film.
Pe Stretch Film,Ldpe Stretch Film,Plastic Packing Film,Hand Use Stretch Film
Ningbo Baichuan Adhesive Products Co., Ltd. , https://www.bcptape.com