High temperature flue gas flowmeter

High temperature flue gas flowmeter

JD Pitot tube flowmeter is a differential pressure flowmeter that uses the pitot tube principle to extract the fluid flow velocity at the center of the pipeline (total pressure static pressure=dynamic pressure) and convert it into fluid volume flow rate and mass flow rate.

Product Introduction:

The Pitot tube flowmeter is a differential pressure flowmeter that uses the pitot tube principle to extract the fluid flow velocity at the center of the pipeline (total pressure static pressure=dynamic pressure) and converts it into fluid volume flow rate and mass flow rate. The pitot tube principle has been widely used in the aerospace industry for a long time.

The Pitot tube flowmeter inserts the probe into the center of the pipeline, with the total pressure hole facing the incoming direction of the positive fluid and the static pressure hole facing the outgoing direction of the positive fluid. The difference between the total pressure and static pressure is the measured differential pressure at the center of the pipeline. The standard differential pressure at this point is then fitted by the wind tunnel calibration curve of the probe, and the fluid flow rate is calculated based on the standard differential pressure. At the same time, a pressure transmitter is required to measure the fluid pressure, and a thermal resistance thermometer is used to measure the fluid temperature. The standard differential pressure signal, pressure signal, and temperature signal are simultaneously introduced into a flow integrator composed of a microcontroller or directly connected to the DCS system. On the one hand, the flow equation of the probe is solved, and on the other hand, pressure and temperature compensation is performed on the steam to ensure measurement accuracy. Differential pressure, pressure, temperature, instantaneous flow rate, cumulative flow rate, heat, velocity and other parameters are displayed digitally.

Working Principle:

There are two thin tubes in the trusteeship. A pipe orifice is facing the direction of liquid flow, and after a 90 degree turn, the kinetic energy of the liquid flow is converted into potential energy. The height at which the liquid rises inside the pipe is the total water head Z+P/pg+V ^ 2/2g at that location; The opening direction of the other tube is perpendicular to the direction of the liquid flow, and only the pressure of the liquid is sensed. The height at which the liquid rises inside the tube is the head of the pressure measuring tube at that location (corresponding to the potential energy) Z+P/pg, and the height difference between the liquid levels of the two tubes is the flow velocity head V ^ 2/2g at that location. By measuring the height difference H between the liquid levels of the two tubes, V ^ 2/2g=H, that is, V=(2gH) ^ (1/2), the flow velocity V at that location can be indirectly measured.

Easy installation: Simply drill a suitable hole in the pipeline and insert the primary component probe into the center of the pipeline for easy installation.

No maintenance required: The primary measuring element probe itself does not require maintenance, only the zero and full calibration of the differential pressure transmitter according to the regular calibration requirements of the measuring instrument, as well as the calibration of the corresponding current input of the secondary meter.

Wide measurement range: Accurate measurement is possible for flow rates ranging from 0.2 t/h to 50000 t/h. The measurement effect is particularly good for low flow rate, small flow rate, and large pipe diameter.

Widely used for measuring gas, steam, and liquid flow rates. Gas: primary wind speed (quantity), secondary wind speed (quantity), (negative pressure) air, oxygen, hydrogen, dry gas, coal gas (converter gas, blast furnace gas, coke oven gas), natural gas, liquefied gas, flue gas, chemical material gas, etc; Steam: superheated steam, saturated steam, wet steam, bidirectional steam, etc; Liquids: water, unfilled water, light oil, tar, crude oil, various solutions, chemical material liquids, etc.

The cross-sectional shape of the medium pipeline has a wide range of applications: this flowmeter has no requirements for the geometric shape of the medium pipeline cross-section, and is suitable for circular, elliptical, square, rectangular, angular, triangular, trapezoidal, etc.

No requirement for straight pipe section: The correction coefficient database for bent pipe sections up to 15 times the pipe diameter under various working conditions only requires the user to provide the length of the straight pipe section, ensuring accuracy even when installed at the bent pipe.

Equipped with intelligent secondary instruments: capable of displaying various parameters and remote communication, forming a network for centralized management.

Service commitment:

Our company adopts the business policy of low profit, high sales volume, and quality assurance, allowing your company to obtain high-quality products at low prices.

Enterprise management purpose: Competitive pricing strategy, focusing on long-term product quality and high-quality service

Product Service:

1. Implement a lifelong responsibility system for our factory's products and always provide technical support and services;

2. Implement three guarantees for product quality, with a one-year warranty period;

3. Free training for users' engineering and technical personnel on product usage, maintenance, and general troubleshooting;

4. Free on-site guidance for installation and debugging;

5. Regularly conduct follow-up visits and technical exchanges with users;

6. Prioritize providing product and technical exchanges to project users;

7. Free provision of product information and manuals;

High temperature flue gas flowmeter