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The principle of integrated orifice flowmeter
Integrated orifice flowmeter is a high range ratio differential pressure flow device composed of a standard orifice plate and a multi parameter differ
Product details
Integrated orifice flowmeter is a high range ratio differential pressure flow device composed of a standard orifice plate and a multi parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter, and pressure transmitter). It can measure the flow of gas, steam, liquid, and natural gas, and is widely used in process control and measurement in fields such as petroleum, chemical, metallurgy, power, heating, and water supply.
Orifice plate throttling device is a standard throttling component that can be produced directly according to national standards without calibration. 1. National standard GB2624-81<Design, installation and use of flow measurement throttling device>; 2. International standard ISO5167<Various throttling devices specified by the International Organization for Standardization>3. Ministry of Chemical Industry standard GJ516-87-HK06
Development Overview
Orifice flowmeter is a high range ratio differential pressure flow device composed of a standard orifice plate and a multi parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter, and pressure transmitter). It can measure the flow of gas, steam, liquid, and natural gas, and is widely used in process control and measurement in fields such as petroleum, chemical, metallurgy, power, heating, and water supply.
scope of application
Nominal diameter: 15 mm ≤ DN ≤ 1200mm 2. nominal pressure: PN ≤ 40MPa
Working principle
The fluid filled in the pipeline flows through the throttling device inside the pipeline, causing local contraction near the throttling element, increasing the flow velocity, and creating a static pressure difference on both sides upstream and downstream.
Under the condition of known parameters, the relationship between differential pressure and flow rate can be derived based on the principle of flow continuity and Bernoulli equation to obtain the flow rate.Structural characteristics
▲ The installation structure is easy to replicate, simple and sturdy, the functions remain unchanged and reliable, the usage is long-lasting, and the price is low.
▲ Orifice plate accounting adopts international standards and processing
▲ Wide applicability, all single-phase flows can be measured, and local mixed phase flows can also be used.
▲ Standard type saves installation and does not require real flow calibration, it can be put into use.
The integrated orifice plate device is simpler and does not require a pressure pipe, and can be directly connected to differential pressure transmitters and pressure transmitters.
precautions
Installation
Can be installed horizontally, vertically, or diagonally, ensuring that the pipe is filled with liquid.The straight pipe sections before and after the throttling device should be straight, without visible bending to the naked eye, and should be "round". The inner wall should be clean, without pits or sediment.
The length requirements of the straight pipe section and the installation of the throttling device shall comply with the relevant provisions of GB/T2624-93.
The installation of pressure pipelines should comply with the specifications specified in the standards.
Ordering Instructions
Please provide the following detailed data when placing an order:
(1) Tested medium
(2) Maximum, commonly used, and minimum traffic.
(3) Work pressure, working temperature
(4) Medium density and viscosity
(5) Pipeline material, inner diameter, outer diameter
(6) Allow for pressure loss
(7) Pressure collection method
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