What are the characteristics of the liquid turbine flowmeter?
2022-07-20
The working principle of the liquid turbine flowmeter is that fluid flows through the sensor housing. Because the blade of the impeller is at a certain Angle to the flow direction, the impact of the fluid makes the blade have rotational torque. After overcoming the friction torque and fluid resistance, the blade rotation torque is balanced, and the speed is stable. Under some conditions, the speed is proportional to the flow rate. Since the blade has permeability, it is in the magnetic field of the signal detector (consisting of permanent magnetic steel and coil), the rotating blade cuts the magnetic field line and periodically changes the magnetic flux of the coil, thereby sensing an electrical pulse signal at both ends of the coil. The signal is amplified and shaped by an amplifier to form a continuous rectangular pulse wave with a certain amplitude, which can be transmitted to a display instrument to display the instantaneous flow and accumulation of the fluid.
The liquid turbine flowmeter structure is explosion-proof and can display the total flow rate, instantaneous flow rate and full flow percentage. Battery using long lithium battery, single-function calculation table battery life can reach more than 5 years, multi-function display table battery life can reach more than 12 months.
The turbine is placed in the center of the pipe, and both ends are supported by bearings. When the fluid passes through the pipe, it impacts the turbine flowmeter blade, creating a driving torque that causes the turbine flowmeter to overcome the friction torque and the fluid resistance moment and rotate. The rotational angular velocity of the turbine flowmeter is proportional to the viscosity of the fluid medium within a certain flow range. Therefore, the fluid flow rate can be obtained through the rotation angular velocity of the turbine flowmeter, and then the fluid flow rate can be calculated through the pipe. The speed of the turbine flowmeter is measured by a sensing coil mounted outside the housing. When the turbine flowmeter blade cuts the magnetic lines generated by the permanent magnetic steel of the housing, the magnetic flux in the sensing coil changes. The sensor coil sends the detected magnetic cycle change signal to the pre-amplifier, amplifying and plastic signal, generating a pulse signal proportional to the flow rate, sending to the unit conversion and flow calculation circuit, displaying the cumulative flow value; The pulse signal is sent to the frequency current conversion circuit, which converts the pulse signal into a simulated current to indicate the instantaneous flow value. The blade of the liquid turbine flowmeter, when the blade of the turbine flowmeter cuts the magnetic line of fire generated by the permanent magnetic steel in the housing, the fluid flow can be lost through the tampering angular velocity of the turbine flowmeter, the pulse signal is converted into an imitation current, and the fixed fluid medium viscosity is detected by the sensing coil installed outside the housing. Both ends are supported by bearings. Then debate the loss of fluid flow through the process pipe. Indicates the instantaneous flow value in an uncertain flow field. The input unit conversion and flow integration circuits obtain and leak the accumulated flow value.
The liquid turbine flowmeter structure is explosion-proof and can display the total flow rate, instantaneous flow rate and full flow percentage. Battery using long lithium battery, single-function calculation table battery life can reach more than 5 years, multi-function display table battery life can reach more than 12 months.
The turbine is placed in the center of the pipe, and both ends are supported by bearings. When the fluid passes through the pipe, it impacts the turbine flowmeter blade, creating a driving torque that causes the turbine flowmeter to overcome the friction torque and the fluid resistance moment and rotate. The rotational angular velocity of the turbine flowmeter is proportional to the viscosity of the fluid medium within a certain flow range. Therefore, the fluid flow rate can be obtained through the rotation angular velocity of the turbine flowmeter, and then the fluid flow rate can be calculated through the pipe. The speed of the turbine flowmeter is measured by a sensing coil mounted outside the housing. When the turbine flowmeter blade cuts the magnetic lines generated by the permanent magnetic steel of the housing, the magnetic flux in the sensing coil changes. The sensor coil sends the detected magnetic cycle change signal to the pre-amplifier, amplifying and plastic signal, generating a pulse signal proportional to the flow rate, sending to the unit conversion and flow calculation circuit, displaying the cumulative flow value; The pulse signal is sent to the frequency current conversion circuit, which converts the pulse signal into a simulated current to indicate the instantaneous flow value. The blade of the liquid turbine flowmeter, when the blade of the turbine flowmeter cuts the magnetic line of fire generated by the permanent magnetic steel in the housing, the fluid flow can be lost through the tampering angular velocity of the turbine flowmeter, the pulse signal is converted into an imitation current, and the fixed fluid medium viscosity is detected by the sensing coil installed outside the housing. Both ends are supported by bearings. Then debate the loss of fluid flow through the process pipe. Indicates the instantaneous flow value in an uncertain flow field. The input unit conversion and flow integration circuits obtain and leak the accumulated flow value.
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