1Mpa Roots Turbine Flow Meter Aluminum 1600 M3/H Roots Flow Meter

NYLD-LGQ Gas Roots Flowmeter

The NYLD-LGQ gas roots flowmeter has been used as a volumetric meter for more than 100 years. With the features such as high precision, wide range, small volume, light weight, convenient installation and maintenance, reliable and durable service life, it is widely used in natural gas, coal gas, air and other gas flowmeters.It is an ideal flowmeter device for urban gas, oilfield chemical, scientific research and other departments at home and abroad.

NYLD-LGQ Gas Roots Flowmeter Technical Parameters

NYLD-LGQ Gas Roots Flowmeter Operating Principle

(1).The flowmeter consists of 5 parts (see Figure 1)

(2).Intelligent gas roots flowmeter working principle (see Figure 2)

The intelligent gas roots flowmeter consists of a housing, a conjugate rotor and an intelligent flow totalizer. Under the action of the pressure difference between the inlet and outlet of the circulating gas (P inlet>P>outlet),the pair of conjugate maintain the correct relative position of the rotor through the precision-machined adjusting gear.The optimum working gap between the rotor, the rotor and the housing, and the rotor and the wall plate achieves a continuous non-contact seal.

For each revolution of the rotor,it outputs four times theeffective volume of the metering chamber, and the number of revolutions of the rotor is transmitted to the intelligent flow totalizer through the magnetic sealing coupling device and the speed reducing mechanism, to display the cumulative volume of the output gas. (The figure shows only a quarter cycle).

(3).Intelligent flow totalizer working principle

The intelligent flow totalizer consists of temperature and pressure detection analog channel, flow sensor channel and microprocessor unit, and is equipped with an external signal interface to output various signals. The microprocessor in the intelligent flow totalizer performs temperature and pressure compensation and compression factor correction according to the gas equation. The gas equation is as follows:

Where:

Qn: volume flow rate under standard condition (m3/h);

Qg: volume flow rate under working condition (m3/h);

Pg: meter pressure at the flowmeter pressure detection point (KPa)

Pa: local atmospheric pressure (KPa);

Tg: absolute temperature(273.15 + t) (K) of the medium;

t: measured medium temperature (°C);

Zn: compression factor under standard condition;

Zg: compression factor under working condition;

Tn: absolute temperature (273.15+20) (K) under standard state;

Pa: local atmospheric pressure (KPa);

Pn: standard atmospheric pressure (101.325KPa);

P: P = Pa + Pg.

Note:For natural gas Zn/Zg=Fz2, Fz is called super compression factor. This product is calculated according to the formula of SY/T6143-1996 of CNPC standard.

Company Introduction

 Xi'an Dehou Electronic Technology Co., Ltd. is a high-tech enterprise specializing in research and development, production, sales of industrial automation instruments and providing Internet of Things solutions.

At present, the company has obtained more than 100 patents and more than 20 soft patents. It has passed IS09001 quality management, IS014001 environmental management, IS045001 Occupational Health and safety management, Occupational Health and Safety Management, GBT29490 Intellectual Property Management, military standard, information security and other system certification and EU CE certification, Russian EAC certification, ATEX explosion-proof certification and SIL certification and other qualifications.

The company is committed to the system integration of process measurement, control, management and other aspects of the system and the development, development, production, sales and service of intelligent instruments and instruments of the Internet of Things.At present, it has metering level FM radar level, pulse radar level, radio frequency guide level, liquid level of magnetover, magnetoexpansion level, sound fork density (level), pressure, flow, multi-point thermometer, analysis, system and tank area meter.The products are widely used in petrochemical industry, coal chemical industry, metallurgy, electric power, building materials, food and medicine and environmental protection water treatment and other industries.

The company can provide customers with location, pressure, temperature, flow, measurement requirements of analytical instruments and cooperation of the Internet of T scheme.