Gas vortex flowmeter is mainly used for measuring the flow rate of medium fluids such as air, nitrogen, oxygen, hydrogen, biogas, natural gas, steam, etc. in industrial pipelines. When measuring the volumetric flow rate under working conditions, it is almost not affected by parameters such as fluid density, pressure, temperature, viscosity, etc. No movable mechanical parts, therefore high reliability and low maintenance. The instrument parameters can remain stable for a long time. The gas vortex flowmeter adopts a piezoelectric stress sensor, which has high reliability and can operate within the working temperature range of -20 ℃ to+250 ℃. It has both analog standard signals and digital pulse signal outputs, making it easy to use in conjunction with digital systems such as computers. It is a relatively advanced and ideal flow meter.

The pulse frequency signal output by gas vortex flowmeter is not affected by fluid properties and composition changes, that is, the instrument coefficient is only related to the shape and size of the vortex generator and pipeline within a certain Reynolds number range. However, as a flowmeter in material balance and energy measurement, it is necessary to detect mass flow rate. At this time, the output signal of the flowmeter should simultaneously monitor volume flow rate and fluid density. Fluid properties and components still have a direct impact on flow measurement. The gas vortex flowmeter is a new type of flowmeter that measures fluid flow in closed pipelines based on the Karman vortex principle. Due to its excellent medium adaptability, it can directly measure the volumetric flow rate of steam, air, gas, water, and liquid without temperature and pressure compensation. Equipped with temperature and pressure sensors, it can measure standard volumetric flow rate and mass flow rate, making it an ideal alternative to throttling flow meters.

To improve the high temperature resistance and vibration resistance of gases, our company has recently developed the SYLUG improved vortex flow sensor. Due to its structure and material selection, the sensor can be used in harsh working conditions such as high temperature (350 ℃) and strong vibration (≤ 1g). In practical applications, the maximum flow rate is often much lower than the upper limit value of the instrument, and with changes in load, the minimum flow rate is often lower than the lower limit value of the instrument. The instrument does not work in its * working section. To solve this problem, it is usually necessary to reduce the diameter at the measuring point to increase the flow rate at the measuring point, and select a smaller diameter instrument to facilitate the measurement of the instrument. However, this diameter changing method requires a straight pipe section with a length of more than 15D between the reducer and the instrument for rectification, which makes processing and installation inconvenient. Our company has developed an LGZ variable diameter rectifier with a curved longitudinal section, which has multiple functions such as rectification, increasing flow velocity, and changing flow velocity distribution. Its structural size is small, only one-third of the inner diameter of the process pipe, and it is integrated with the vortex flowmeter. It not only does not require an additional straight pipe section, but also reduces the requirements for the straight pipe section of the process pipe, making installation very convenient.

For the convenience of use, the battery powered on-site display gas vortex flowmeter adopts low-power technology. It can operate continuously for more than a year with lithium battery power supply, saving the procurement and installation costs of cables and display instruments. It can display instantaneous flow rate, cumulative flow rate, etc. on-site. The temperature compensated integrated vortex flowmeter also comes with a temperature sensor, which can directly measure the temperature of saturated steam and calculate the pressure, thereby displaying the mass flow rate of saturated steam. The temperature pressure compensation integrated type is equipped with temperature and pressure sensors, which can directly measure the temperature and pressure of the gas medium for gas flow measurement, thereby displaying the standard volume flow rate of the gas.

The LYLWGQ gas turbine flowmeter is a precision flow measurement instrument that can be used to measure liquids when paired with corresponding flow integrator instrumentsTraffic and total volume. Gas turbine flow meters are widely used in measurement and control systems in fields such as petroleum, chemical, metallurgical, and scientific research. Gas turbine flow meters equipped with sanitary fittings can be applied in the pharmaceutical industry.

The structure of the integrated gas turbine flowmeter is explosion-proof design, which can display the total flow rate, instantaneous flow rate, and flow rate percentage. The battery adopts a long-lasting lithium battery, and the service life of a single function odometer battery can reach more than 5 years, while the service life of a multifunctional display meter battery can also reach more than 12 months.

The integrated meter head can display a wide range of flow units, including cubic meters, gallons, liters, standard cubic meters, standard liters, etc. It can set fixed pressure and temperature parameters to compensate for gases. In situations where pressure and temperature parameters do not change significantly, this instrument can be used for fixed compensation accumulation.

Low pressure loss and impeller with anti-corrosion function;

Adopting advanced ultra-low power single-chip microcomputer technology, the whole machine has strong functions, low power consumption, and excellent performance.

Intelligent flow display with non-linear accuracy compensation function. The accuracy of the correction formula is better than ± 0.02%

The instrument coefficient can be set online by buttons and displayed on the LCD screen, which is intuitive, clear, and highly reliable

Using EEPROM for power down protection of accumulated flow and instrument coefficient, with a protection time greater than 10 years

Using high-performance MCU central processing unit to complete data acquisition, processing, display output, cumulative flow, instantaneous flow, etc

Convenient human-machine interface implementation with screen display, data transmission in standard 485 format.

Adopting fully cemented carbide (tungsten carbide) shielded cantilever beam structure bearings, integrating rotating bearings and pressure bearings, greatly improving the bearing life, and can work in media with a small amount of sediment and dirt.

Adopting 1Cr18Ni9Ti all stainless steel structure (2Cr13 for turbine), it has good anti-corrosion performance.

Easy to repair, with a self rectifying structure, small and lightweight, simple structure, can be assembled and disassembled in a short time,

Internal cleaning is simple.

Has strong resistance to magnetic interference and vibration, reliable performance, and long lifespan

Low lower flow rate, wide measurement range,

The on-site display LCD screen has clear and intuitive display, low power consumption, and can run continuously for more than 5 years with a 3V lithium battery power supply,

Corrosion resistant, suitable for acidic and alkaline solutions

Classified by instrument functionDivided into three main categories1. Gas turbine flow sensor/transmitter:

This type of turbine flow product itself does not have on-site display function, only transmitting and outputting flow signals remotely. Flow signals can be divided into pulse signals or current signals (4-20mA); The instrument is inexpensive, highly integrated, and compact in size, making it particularly suitable for use with computer control systems such as secondary displays, PLCs, and DCS. This type of turbine flowmeter is an explosion-proof product with an explosion-proof rating of ExdIIBT6.Application scenario: It can be used as a collection instrument for working condition flow signals, transmitting flow signals remotely to the upper computer

2. Intelligent integrated gas turbine flowmeter

Integrated intelligent instrument, using dual row LCD on-site display, has obvious advantages such as compact mechanism, intuitive and clear reading, high reliability, no external power interference, lightning resistance, and low cost.

Application scenarios:

1. As an industrial control instrument in working conditions with relatively stable temperature and pressure on site

2. In working conditions where temperature and pressure are relatively stable, users can use the gas equation based on the instrument readings toFrom line calculation to standard flow rate

3. Intelligent temperature and pressure compensation integrated gas turbine flowmeter

The HLWQ-D gas turbine quantity meter is equipped with temperature and pressure sensors, as well as an intelligent flow integrator. Through a microprocessor unit, the real-time collected flow, temperature, and pressure signals are processed according to the gas flowPerform temperature and pressure compensation using the equation of state, automatically correct the compression factor, and then visually display the volumetric flow rate under standard conditions

Application scenario: Measurement or trade settlement