High density gas turbine flowmeter

Project Overview

1. Introduction

High-density gas turbine flowmeter is an instrument used to measure high-density gas flow. It uses the rotational force generated by fluid flowing past turbine blades to measure flow. Compared with other types of flow meters, high-density gas turbine flow meters have the following advantages:

And accuracy, wide flow measurement range, reliability and durability, high maintenance costs, and low maintenance costs

High Density gas turbine flow meters are used in petrochemical, natural gas, electric power, pharmaceutical and other industries to measure various high-density gases, such as natural gas, propane, butane, carbon dioxide, etc.

2. Working principle

The working principle of the high-density gas turbine flowmeter is based on the relationship between flow rate and turbine rotation speed. As gas flows through the flow meter, it spins the turbine blades. The rotation speed of the turbine is directly proportional to the gas flow rate. By measuring the rotational speed of the turbine, the gas flow rate can be determined.

High-density gas turbine flowmeters usually include the following parts:

Sensor: includes a turbine blade, which is installed in the measurement chamber of the flowmeter. As the gas flows through the measuring chamber, it causes the turbine blades to rotate. Rotation speed sensor: used to detect the rotation speed of the turbine. Common rotational speed sensors include magnetic sensors and photoelectric sensors. Magnetic sensors use magnetic induction to detect the rotation of the turbine, while photoelectric sensors use light blocking to detect the rotation of the turbine. Signal processing circuit: Processes the signal from the rotation speed sensor and converts it into a flow signal. Display: Displays gas flow information. It can be an analog dial or a digital display.

When gas flows through the flowmeter, the turbine blades will rotate, and the rotation speed sensor will detect the rotation speed of the turbine and transmit the signal to the signal processing circuit. The signal processing circuit converts the signal into a flow signal and displays it on the display.

3. Main features

The high-density gas turbine flow meter has the following main features:

: Due to the precision design of the turbine blades and rotation speed sensor, high density Gas turbine flowmeters are capable of providing excellent flow measurement. Wide measurement range: The high-density gas turbine flowmeter can measure the range from low flow to high flow, and is suitable for various application scenarios. High reliability and durability: The high-density gas turbine flowmeter adopts solid materials and design, which can withstand harsh working conditions and has high reliability and durability. Low maintenance costs: High-density gas turbine flowmeters generally do not require frequent maintenance and only require regular cleaning and inspection, reducing maintenance costs. Strong anti-interference: The high-density gas turbine flowmeter has strong anti-interference against particles and impurities in the gas, and can work normally even when it contains more impurities.

4. Application

High-density gas turbine flowmeter is used in the following fields:

Petrochemical industry: used to measure high-density natural gas, propane, butane, etc. The flow of gas helps control the production process and improve production efficiency. skyNatural gas: used to measure the flow in natural gas transmission pipelines to ensure the safe and efficient transportation of natural gas. Electricity: Used to measure fuel gas flow in gas-fired power plants to help improve power generation efficiency. Pharmaceutical: Used to measure various high-density gas flows in the production process to ensure product quality and consistency. Chemical manufacturing: used to measure gas flow in various chemical production processes, control the production process, and improve product quality.

5. Common types

High-density gas turbine flowmeters can be divided into the following types according to different designs and uses:

5.1 Wet turbine flowmeter Meter

Wet turbine flow meter refers to a flow meter in which the turbine blades are in direct contact with the gas. The advantages of this type of flow meter are high sensitivity and high measurement accuracy. The disadvantage is that it is easily contaminated by particulate matter in the gas and requires regular cleaning and maintenance.

5.2 Dry turbine flowmeter

Dry turbine flowmeter refers to a flowmeter in which the turbine blades are isolated from the gas through a sealed bearing. The advantages of this type of flow meter are strong resistance to contamination and low maintenance costs. The disadvantage is that the sensitivity is slightly lower than that of wet turbine flow meters.

5.3 Precession turbine flowmeter

The precession turbine flowmeter means that the turbine blades are installed inside the measurement chamber of the flowmeter, and the gas enters the measurement chamber through precession. , pushing the turbine blades to rotate. The advantages of this type of flow meter are high measurement accuracy and strong anti-interference ability. The disadvantage is that the structure is more complex and the cost is higher.

5.4 Multi-blade turbine flowmeter

Multi-blade turbine flowmeter refers to a flowmeter with a large number of turbine blades. The advantages of this type of flow meter are high sensitivity and high measurement accuracy. The disadvantage is that the structure is more complex and the cost is higher.

5.5 Dual-channel turbine flowmeter

Double-channel turbine flowmeter means that there are two side-by-side measurement channels inside the flowmeter, each with a turbine blade installed. The advantage of this type of flow meter is that it can measure gas flow in two directions at the same time and improve measurement accuracy. The disadvantage is that the structure is more complex and the cost is higher.

6. Technical parameters

When choosing a high-density gas turbine flow meter, you need to consider the following technical parameters:

Flow range: the flow rate and small amount that the flow meter can measure flow. Accuracy grade: The measurement accuracy of the flow meter is usually expressed by the accuracy grade, such as ±0.5%FS, ±1%FS, etc. Repeatability: The deviation of the measurement results when the flow meter repeatedly measures the same amount. Pressure level: The working pressure that the flow meter can withstand. Temperature grade: The operating temperature that the flowmeter can withstand. Material: The material of the flow meter needs to be selected according to the use environment and gas properties, such as stainless steel, Hastelloy, etc. Interface size: The connection interface size of the flow meter needs to match the interface size of the pipe or equipment. Output signal: The output signal type of the flow meter, such as analog signal, digital signal or pulse signal, etc.

7. Installation and use

When installing and using a high-density gas turbine flowmeter, you need to pay attention to the following matters:

Installation location: The installation location of the flowmeter should be selected in the straight pipe section, and the length of the straight pipe section should meet Flowmeter installation requirements. Installation direction: The installation direction should be consistent with the direction of gas flow, and ensure that the installation direction of the flow meter is consistent with the indicator arrow. Pipe cleaning: Before installation, ensure the cleanliness of the pipe to prevent impurities from entering the flow meter and affecting the measurement accuracy. Calibration: After installation is completed, calibration should be performed.