High temperature resistance flowmeter

Abstract

The invention discloses a high temperature resistance flowmeter, and the high temperature resistance flowmeter comprises a bracket, a shell, a pinger, a high temperature resistance electromagnetic sensor, a rotor wheel, a header, a stable shelf, a heat dissipation tube and a locating gear, one end of the rotor wheel is connected to the centre of the locating gear while the other end is the measuring end of the flowmeter, a connection shelf is fixed on the locating gear, the pinger is formed at the top side of the connection shelf, the rotor wheel and the locating gear are located in the shell, one end of the heat dissipation tube is located in the shell while the other end is connected to the underside of the bracket, the signal output end of the high temperature resistance electromagnetic sensor is connected to the header through the wire and the signal collecting end of the high temperature resistance electromagnetic sensor is located in the heat dissipation tube in the shell not contacting the heat dissipation tube, a plurality of mini fans are formed in the heat dissipation tube. The high temperature resistance electromagnetic sensor does not contact the bottom of the heat dissipation tube, so the outer temperature and the inner temperature of the heat dissipation tube can have heat loss through convection, the mini fans speeds up the air convection, so the heat dissipation speed is faster.

Description

Technical field [0001] The invention relates to a flow meter, in particular to a high temperature resistant flow meter. Background technique [0002] High-temperature flow meters are instruments used for measurement in high-temperature environments, such as high-viscosity asphalt and sulfur. Their viscosity is between 100 and 3000mPa.S. Pipeline transmission cannot be achieved at room temperature. It must be melted before transmission. There are currently two The first type of high-temperature flowmeter is to connect the flowmeter with a magnetic coupling plus a sealing ring and a heat sink. The second type is to use a mechanically sealed drive shaft and a heat sink to connect the flowmeter. The first type uses a magnetic coupling with heat dissipation. The magnet of the magnetic coupling has been working at high temperature for a long time, and there is a problem of demagnetization. The flowmeter will go slower and slower until it stops working. The magnetic coupling needs to be...

AI Technical Summary

Problems solved by technology

[0002] High-temperature flowmeters are instruments used for measurement in high-temperature environments, such as high-viscosity asphalt and sulfur, and their viscosity is between 100 and 3000mPa.S. Pipeline transmission cannot be realized at room temperature and must be melted before transmission. The first type of high-temperature flowmeter is a magnetic coupling with a seal ring and heat sink connected to the flowmeter; the second type is a mechanically sealed drive shaft with a heat sink connected to the flowmeter; the first type uses a magnetic coupling with heat dissipation The magnet of the magnetic coupling works at high temperature for a long time, there is a problem of demagnetization, the flowmeter will go slower and slower until it stops working, and the magnetic coupling needs to be replaced frequently; the second type of mechanical seal shaft mainly relies on the rubber sealing ring to achieve rotation The shaft seal, working in a high temperature environment for a long time, coupled with the corrosion of the medium, causes the aging of the sealed shaft and rubber ring to accelerate, and the seal ring is quickly damaged, resulting in medium leakage

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