Classification of orifice flowmeter

Orifice meter is the standard orifice differential pressure transmitter with multiple parameters (or differential pressure transmitter, temperature transmitter and pressure transmitter) form a complete set of high contrast range pressure flow device, capable of measuring gas, steam, liquid and flow, widely used in petroleum, chemical industry, metallurgy, electricity, heating, water supply in areas such as process control and measurement. Throttle device, also known as differential pressure flowmeter, is composed of a primary test piece (throttle piece) and a secondary device (differential pressure transmitter and flow display) widely used in gas. Flow measurement of steam and liquid. It has simple structure, convenient maintenance and stable performance.

Application of orifice flowmeter

Widely used in petroleum, chemical, metallurgy, electric power, heating, water supply and other fields of process control and measurement. Orifice flowmeter is widely used in coal, chemical industry, transportation, construction, textile, food, medicine, agriculture, environmental protection and People's Daily life and so on each domain of national economy, is the development of industrial and agricultural production, save energy and improve the quality of our products and improve the economic benefit and the management level of the important tools in the national economy occupies an important position. In the process automation instrument and device, the flow meter has two functions: as a process automation control system detection instrument and measurement of the amount of material table.

Design style of orifice flowmeter

The fluid flows through the throttling device in the pipeline, causing local contraction near the throttling part, increasing the flow rate, and generating static pressure difference on the upstream and downstream sides.

Orifice flowmeter throttling device simple structure, and firm, stable and reliable performance, long life, low price, is often used in the industry flow measurement instrument, the whole processing process using international standards, and after strict verification and detection.

Orifice flowmeter makes the flow rate increase, static pressure is low, so before and after the throttle parts will produce a pressure drop, that is, the pressure difference, the greater the flow of medium flow, the greater the pressure difference before and after the throttle parts, so the orifice flowmeter can measure the size of the fluid flow by measuring the pressure difference. This measurement method is based on the law of energy conservation and the law of flow continuity.

Orifice flowmeter can measure the flow of all kinds of fluid in the pipeline, and the measurable medium is liquid, gas, steam. It is widely used in petroleum, chemical, metallurgy, light industry, coal and other industrial sectors.

A static pressure difference is generated before and after the orifice flowmeter, and there is a certain functional relationship between the pressure difference and the flow rate. The larger the flow rate is, the greater the pressure difference is. The differential pressure signal is transmitted to the differential pressure transmitter and converted into 4-20mA. Mass flowmeter, using intelligent differential pressure transmitter, automatically compensates the temperature/pressure of working conditions, to achieve the measurement of fluid mass flow,

Orifice flowmeter to send hot air, hot blast furnace from the blast furnace is generally close, and more elbow. The standard orifice plate was used in the past, but the error was large because the straight pipe section was not long enough. Because the instrument has a pressure equalizing ring and a number of pressure inlet, 2D long straight pipe section is required. After installation on the hot blast stove air supply pipe, the application is very satisfied, there have been more than 30 hot blast stoves installed with annular orifice plate flowmeter, running for more than 3 years without failure.