Simple flowmeter

Abstract

The invention discloses a simple flow meter used in the fields of petroleum, chemical industry, etc., which comprises a pipe body, an impeller assembly and a display controller. The pipe body is provided with a liquid inlet, a liquid outlet and a measuring pipeline. The display controller includes The casing and the control module, the impeller assembly includes an impeller seat and a blade assembly, one end of the impeller seat extends into the measuring pipe, and the other end is fixed on the casing, a preamplifier is arranged in the impeller seat, and an induction coil is arranged in the preamplifier, and A permanent magnet is embedded in the center of the induction coil, and an amplifier electrically connected to the control module is provided at the upper end of the induction coil, and the blade assembly includes a blade base, two or more blades on the blade base and metal rods on the blades; The two ends of the blade seat are connected to the impeller seat through bearings; the principle of the magnetic flux change in the induction coil caused by cutting the magnetic field line with the metal rod is used, and then the magnetic flux is amplified and displayed, so as to achieve simple overall structure, fast speed and high measurement precision.

Description

technical field [0001] The invention relates to a flowmeter, in particular to a simple flowmeter with a plastic impeller. Background technique [0002] Flowmeter is one of the important instruments in industrial measurement. Currently, flowmeters commonly used in the market are used to measure the volume flow of liquids that fill closed pipes and flow continuously. However, it is not easy to measure liquids with low viscosity and corrosion resistance. With the industrial With the development and progress of production, the requirements for the accuracy and range of flow measurement are getting higher and higher, and the flow measurement technology is changing with each passing day. In order to adapt to various purposes, various types of flowmeters have come out one after another; at present, more than 100 flowmeters have been put into use. The plastic impeller flowmeter belongs to a relatively mature technology, which mainly involves a flowmeter used in petroleum, chemical i...

AI Technical Summary

Problems solved by technology

The magnetic flux in the detection coil changes periodically accordingly, generating periodic induced potential, that is, the electric sweep signal. After being amplified by the amplifier, it is sent to the display instrument for display. However, the structure of the current plastic impeller flowmeter is relatively simple, so the test The accuracy is not high, the measurement speed is not fast, and it cannot meet the needs of the growing industrialization

Images