Manufacturing of compressed air flow meter

Manufacturing of compressed air flow meter-Jiangsu Dingsheng Instrument Co., Ltd

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DS-WLWQ Compressed Air Flow Meter (Gas Turbine Flow Meter) is a precision flow measurement instrument that measures the corresponding flow rateAccumulation instrumentThe matching can be used to measure the flow rate and total amount of liquids. 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.

1Manufacturing of compressed air flow meterDisplay image:

2、 Characteristics of Compressed Air Flow Meter:

1. Gas turbine flowmeter has high accuracy, low pressure loss, low starting flow rate, automatic tracking and compensation for temperature, pressure and flow rate, battery power supply, can output multiple signals, uses imported bearings, long service life, and easy installation. The intelligent speed flow meter integrates flow, temperature, and pressure detection functions, and can perform temperature and pressure compensation. It has the advantages of high accuracy, good repeatability, wide measurement range, and easy installation and use.

2. Adopting a new type of microprocessor and high-performance integrated chips, it has high computational accuracy, excellent overall functionality and performance.

3. Adopting low-power high-tech, the whole machine has low power consumption. It can be powered by a built-in 3.6V battery for long-term operation, and can also be powered by an external 24V power supply.

4. Adopting a new type of sensor, it has good anti vibration and anti pulsating flow performance, is not easy to corrode, has good reliability, and has a long service life.

5. According to the flow frequency signal, the instrument coefficient can be automatically linearly corrected in eight segments, which can improve the calculation accuracy of the instrument according to user needs.

6. Adopting EEPROM data storage technology, it has the function of storing and querying historical data, and three historical data recording methods are available for users to choose from.

7. The flowmeter head can rotate 180 °, making installation and use simple and convenient.

8. High precision measurement can generally reach ± 1.5% and ± 1.0%.

9. Good repeatability, short-term repeatability can reach 0.05% to 0.2%. It is precisely because of its good repeatability that flow meters are preferred in trade settlement.

10. It can detect the temperature, pressure, and flow rate of the detected gas, automatically track and compensate for the flow rate, and display the gas flow rate under standard conditions (Pn=101.325KPa, Tn=293.15K). It can also query real-time data such as temperature, pressure, time, and date.

3、 Product Selection Guide:
1. Accuracy level: Generally speaking, the selection of turbine flow meters is mainly based on their high accuracy. However, the higher the accuracy of the flow meter, the more sensitive it is to changes in on-site usage conditions. Therefore, the choice of instrument accuracy should be carefully considered from an economic perspective. For trade settlement instruments for large-diameter gas pipelines, it is cost-effective to invest more in instruments, while for situations with small transport volumes, a medium precision level can be selected.
2. Flow range: as described above
3. Gas density: The main influence of fluid properties on gas turbine flow meters is gas density, which has a significant impact on instrument coefficients and mainly occurs in low flow areas. If the gas density changes frequently, corrective measures should be taken for the flow coefficient of the flowmeter.
4. Pressure loss: Try to choose turbine flow meters with low pressure loss. The smaller the pressure loss of the fluid passing through the turbine flowmeter, the less energy is consumed by the fluid from the input to the output pipeline, which reduces the total power required. This can greatly save energy, reduce transportation costs, and improve utilization efficiency.
Someone once conducted an experiment and found that the main component affecting pressure loss is the front guide vane of the turbine flowmeter. Compared with the front guide vane of the cone, the front guide vane of the semi elliptical sphere can significantly reduce the pressure loss of the turbine flowmeter.
5. Structural type:
(1) The internal structure should use a reverse thrust turbine flowmeter. Because the reverse thrust structure can keep the impeller in a floating state within a certain flow range, there are no contact points in the axial direction, and there is no end face friction and wear, which can extend the service life of the bearing.
(2) According to the selection of pipeline connection methods, flow meters can be installed horizontally and vertically. Horizontal installation and pipeline connection methods include flange connection, threaded connection, and clamp connection. Select flange connection for medium caliber; Use threaded connections for small-diameter and high-pressure pipelines; Clamp on connections are only suitable for low-pressure small and medium-sized pipe diameters; Vertical installation only has threaded connections.
(3) Select based on environmental conditions, taking into account the effects of temperature and humidity. Natural gas metering should choose intrinsically safe explosion-proof turbine flow meters.
6. Bearings: The bearings of turbine flow meters are generally made of three types of materials: tungsten carbide, polytetrafluoroethylene, and carbon graphite. The bearings of natural gas measuring instruments should be made of tungsten carbide material.

The above are the main aspects to consider when selecting. Due to the wide variety of types and specifications of turbine flow meters, especially the differences in product quality among different manufacturers, when selecting, it is necessary to collect relevant technical standards and other information from manufacturers and products as much as possible, conduct repeated investigations and comparisons, and then decide whether to choose.

4、 Technical parameters:

1. Selection Chart

2. Comparison Table of Caliber and Flow Range Selection:

3. Selection parameters