The main measuring element of the glass rotor flow meter is a vertically mounted small upper large cone glass tube and a float movable up and down inside. When the fluid flows bottom-up through the conical glass tube, the pressure difference occurs between the float up and down the float, and the float rises under the differential pressure. When the rising force force, the buoyancy force, and the viscosity lift force are equal to the gravity force of the float, the float is in an equilibrium position. Therefore, there is a certain proportional relationship between the fluid flow through the glass rotor meter and the float rising height, that is, and the circulation area of the glass ROTA METER, and the position height of the float can be regarded as the flow measure.
Application scope: the wide application of glass rotor flow meter, flow measurement technology and instrument application roughly has the following fields.
1.Industrial production process: Flow meter is one of the big instrument of process automation instrument and device, it is widely used in metallurgy, electricity, coal, chemical, oil, transportation, transportation, construction, textile, food, medicine, agriculture, environmental protection and people's daily life and other areas of the national economy, is the development of industrial and agricultural production, the energy saving, improve product quality, improve the economic benefit and management level of important tools occupies an important position in the national economy. In the process automation instrument and the device, the flow meter has two major functions: as the detection instrument of the process automation control system and the total amount of the material quantity measurement table.
2.Energy measurement: energy is divided into primary energy (coal, crude oil, coal-bed methane, petroleum gas and natural gas), secondary energy (electricity, coke, artificial gas, refined oil, liquefied petroleum gas, steam) and energy-carrying working matter (compressed air, oxygen, nitrogen, hydrogen, water), etc. Energy measurement is an important means to scientifically manage energy, save energy and reduce consumption, and improve economic benefits. Flow meters are an important part of energy metering meters. Water, artificial gas, natural gas, steam, oil products and other commonly used energy sources all use an extremely large amount of flow meters, which are indispensable tools for energy management and economic accounting.
3.Environmental protection projects: the discharge of flue gas, waste liquid and sewage seriously pollutes the atmosphere and water resources, seriously threatening the human living environment. The country has listed sustainable development as a national policy, and environmental protection will be the biggest issue in the 21st century. For the air and water pollution to be controlled, the management must be strengthened, and the basis of the management is the quantitative control of the pollution quantity.
4.Transportation: there are five ways: railway and road, aviation, water transport, and pipeline transportation. Although the pipeline transportation has long been there, but the application is not common. With the prominent environmental protection problems, the characteristics of pipeline transportation cause people's attention. Pipeline transportation must be equipped with a PANEL FLOW METER, and it is the eye of control, distribution and dispatch, and it is also a necessary tool for safety supervision and economic accounting.
5.Biotechnology: The 21st century will usher in the century of life science, and the industry characterized by biotechnology will develop rapidly. There are many substances that need to be monitored and measured in biotechnology, such as blood, urine, etc. The development of instrument is extremely difficult, a variety of.
6.Scientific experiment: the GAS FLOW METER that scientific experiment needs is not only large in quantity, and the variety is extremely complex. According to the statistical flow meter of more than 100 kinds of a large part of the needs of scientific research, they are not mass-produced, sold in the market, many scientific research institutions and large enterprises are set up special teams to develop a special FLOW METER.
7.Marine weather, rivers and lakes: These areas are open flow channels, generally need to detect the flow rate, and then calculate the flow rate. The physical principle and flow mechanics basis of the flow meter and the flow meter are in common, but the principle, structure and use condition of the instrument are very different.