Installation of 185KW Roots blower

Roots blower is a positive displacement fan, and the air volume conveyed is proportional to the number of revolutions. The three bladed impeller performs three suction and exhaust operations with two impellers per rotation. Compared with the two bladed impeller, the gas pulsation is reduced, the load change is small, the mechanical strength is high, the noise is low, and the vibration is also small. There are two three bladed impellers on two parallel axes, and a small gap is always maintained between the impellers and the inner hole surface of the elliptical casing. Due to the constant rotation of the impellers in opposite directions, a certain amount of gas surrounded by the casing and impellers is transported from the suction side to the discharge side. Each impeller is always maintained in the correct phase by synchronous gears, and there is no mutual contact phenomenon, so it can be driven at high speed without internal lubrication. Moreover, the structure is simple, the operation is stable, the performance is stable, and it is suitable for various purposes. It has been applied in a wide range of fields.

Technical parameters of Roots blower

When choosing a Roots blower, the task is to gain a deep understanding of its technical parameters. The main parameters of Roots blower include flow rate, pressure, power, medium, and density. Next, we will explore these key parameters one by one.

Flow rate is an important indicator of a Roots blower, which represents the volume of gas transported by the Roots blower per unit time under standard conditions. Usually measured in cubic meters per minute or cubic meters per hour. The specific calculation formula is as follows: Q (inlet)=Q (outlet) × outlet gas density (kg/m ³)/inlet gas density (kg/m ³). If the standard flow rate Q (standard, m³/h， Converted from normal temperature and pressure to intake flow rate Q (intake, m³/min)， The following formula can be used for calculation: Q (inlet)=Q (standard) × P (inlet gas pressure, Pa)/(P (inlet gas pressure, Pa) - S (relative humidity) × P (water vapor saturation pressure, Pa)) × T (thermodynamic temperature K of inlet gas)/273. Please note that the standard state is usually defined as a dry state at 0 degrees Celsius and 0.1 MPa.

In the application of fans, pressure parameters are necessary. Roots blower, as a special type of blower, its pressure parameters are mainly used to overcome the resistance of pipelines, known as back pressure in the industry. This parameter occupies a central position in the selection process of Roots blowers, therefore, it is necessary to provide accurate required pressure parameters during selection to ensure the accuracy of selection and the effectiveness of use.

Due to differences in the power of Roots blowers produced by different brands, the power of each Roots blower will also vary. In the Roots blower industry, power usually refers to shaft power, which reflects the efficiency of the equipment. The higher the shaft power, the stronger the efficiency; On the contrary, low shaft power means significant efficiency loss and corresponding increase in consumption. Therefore, when selecting Roots blowers, if there are specific requirements for shaft power, they must be clearly stated in the procurement technical agreement.

The Roots blower is mainly used for conveying clean air, and its core conveying medium is air. With the advancement of technology, modern Roots blowers can now transport gases such as coal gas and biogas, but special modifications are required for the equipment. Please note that the conveying medium here specifically refers to the gas passing through the interior of the Roots blower. In the dust removal industry, although Roots blowers are also used, dust does not pass through their interior, it only provides power for the dust removal process. Therefore, when selecting, if the transported gas medium contains special components such as water vapor, oil vapor, or toxic gases, the Roots blower must be treated accordingly to ensure safe use.

In the selection process of Roots blowers, although density is not a directly mentioned parameter, the altitude factor closely related to it is often considered. The altitude will affect the density of gas, which in turn affects the selection of Roots blowers. For example, in plateau areas, due to higher altitude, gas density is relatively low, while in basin areas, the opposite is true. Therefore, when selecting, we need to choose the appropriate Roots blower model based on the altitude differences in the region and the gas density.

Installation of 185KW Roots blowerPrecautions

1. The foundation should be firm, the surface should be flat, and it should be 10-25cm higher than the ground.

2. There should be sufficient space around the fan to meet the needs of maintenance and disassembly.

3. The working environment temperature of the fan should not exceed 40 degrees Celsius. If it exceeds, measures should be taken to cool it down, otherwise the service life of the fan will be shortened.

4. When configuring the fan outdoors, please set up a rain shelter.

Installation of 185KW Roots blower-Precautions for installation of fan ducts

1. The fan ducts should be tightly connected and not leak air, and brackets should be installed at appropriate positions.

2. The pipeline material should be able to withstand exhaust temperature and pressure. (Try to use steel pipes as much as possible)

3. The interior of the pipeline should be clean and free of foreign objects to prevent debris from entering.

4. A one-way valve should be installed on the pipeline to prevent the backflow of high-pressure gas caused by fan reversal from entering the fan and causing damage to the fan. Attention: The one-way valve should be installed on a horizontal pipeline.

5. In the case of multiple wind turbines operating in parallel, gate valves must be installed on each branch pipeline (one of the turbines can be shut off during maintenance).

6. An exhaust valve should be installed on the pipeline to prevent the fan from starting under load. The fan should be started with no load before gradually closing the exhaust valve. When operating under load and shutting down, the exhaust valve should also be opened first to confirm that the fan is not under load before shutting down the fan.

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