Turbine flow meter installation piping requirements

The uneven distribution of flow velocity and the presence of secondary flow in the tube are important factors affecting the measurement accuracy of the turbine flowmeter. Therefore, turbine flowmeters have certain requirements for upstream and downstream straight pipe sections. For industrial measurements, generally require 20D upstream and 5D downstream straight pipe length. To eliminate the secondary flow, it is best to install a rectifier on the upstream side. If the upstream end can guarantee a straight pipe section of about 20D, and install a rectifier, the measurement accuracy of the flowmeter can reach the accuracy level of the calibration.

Turbine flowmeters require high fluid cleanliness. Filters must be installed before the flowmeter to ensure fluid cleanliness. Filter can be used funnel type, its own cleanliness, can be measured at both ends of the differential pressure change.

In order to ensure that the liquid passing through the flowmeter is single-phase, that is, air or steam cannot be allowed to enter the flowmeter, an air eliminator should be installed upstream of the flowmeter when necessary. For the easy gasification liquid, a certain back pressure must be guaranteed downstream of the turbine flow meter. The back pressure may be twice the pressure drop of the flow sensor at the maximum flow rate plus 1.2 times the measured liquid vapor pressure at the highest temperature.

Warp Knitting Bearing And Bush

Warp Knitting Machine is a type of textile machine that is used to produce knitted fabrics. The machine uses warp yarns that are fed into the machine and are then interlocked to create a fabric. The machine consists of a series of needles that are arranged in a flat bed. The needles are moved up and down by a cam system, which allows the yarns to be interlocked.

The bearings and bushes used in warp knitting machines are critical components that ensure the smooth operation of the machine. These components are used to support the moving parts of the machine and to reduce friction between the parts.

The bearings used in warp knitting machines are typically ball bearings or roller bearings. These bearings are designed to support the rotating shafts and other moving parts of the machine. They are made from high-quality materials such as steel or ceramic and are designed to withstand the high stresses and temperatures that are generated during the operation of the machine.

The bushes used in warp knitting machines are typically made from bronze or brass. These bushes are used to support the moving parts of the machine and to reduce friction between the parts. They are designed to be self-lubricating, which helps to reduce wear and extend the life of the machine.

Overall, the bearings and bushes used in warp knitting machines are critical components that ensure the smooth operation of the machine. These components are designed to withstand the high stresses and temperatures that are generated during the operation of the machine, and they are made from high-quality materials to ensure their durability and reliability.

Bearing

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