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Magnetic-sensing-type flow sensing system

A flow sensing and magneto-sensitivity technology, applied in the direction of volume/mass flow generated by electromagnetic effect, volume/mass flow generated by mechanical effect, fluid flow detected by measuring pressure difference, etc., can solve the problem of corrosion resistance of Venturi flowmeter, Poor high temperature resistance, non-adjustable range and other problems, to achieve the effect of low manufacturing cost, simple structure and good system reliability

Inactive Publication Date: 2012-05-09
俞建峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing Venturi tube differential pressure transmitter is directly in contact with the fluid, resulting in poor corrosion resistance and high temperature resistance of the Venturi flowmeter
The existing Venturi flowmeter uses a proprietary pressure transmitter, which has the disadvantage that the measuring range cannot be adjusted

Method used

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Embodiment Construction

[0017] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Such as figure 1 As shown, the self-magnetic-sensitive flow sensor system of the present invention includes a Venturi tube 1; a high-pressure chamber 2; a high-pressure piston 3; a high-pressure chamber magnet 4; a high-pressure chamber spring 5; a high-pressure chamber magnetic sensor 6; ;Low pressure signal conditioning 8; Low pressure chamber 9; Low pressure piston 10; Low pressure chamber magnetic steel 11; Low pressure chamber spring 12; Low pressure chamber magnetic sensor 13; .

[0019] The fluid flows through the Venturi tube 1, when the liquid in the pipeline flows through the Venturi tube, the section of the liquid flow shrinks, the flow velocity increases at the shrinking section, and the pressure decreases, causing a pressure difference between the front and back of the Venturi tube, and then according to t...

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Abstract

The invention discloses a magnetic-sensing-type flow sensing system used for measuring the volume flow of a fluid, and belongs to the field of fluid measurement. The technical scheme adopted by the invention is as follows: the magnetic-sensing-type flow sensing system provided by the invention comprises a Venturi tube, a high pressure chamber, a high pressure piston, a low pressure chamber, a low pressure piston, high pressure chamber magnetic steel, a high pressure chamber magnetic-sensing component, a high pressure chamber spring, low pressure chamber magnetic steel, a low pressure chamber magnetic-sensing component, a low pressure chamber spring, a high pressure signal conditioner, a low pressure signal conditioner, a multi-way changeover switch, an A / D (analog / digital) converter, a single chip microcomputer and a liquid crystal display unit. A pressure drop is generated when the fluid flows through the diameter-reducing Venturi tube; high pressures and low pressure values are measured by the high pressure chamber magnetic-sensing component and the low pressure chamber magnetic-sensing component; high pressures and low pressure signals are collected by the multi-way changeover switch, the A / D converter and the single chip microcomputer; and the flow value is calculated internally, and the flow of the fluid in a pipeline is displayed on the liquid crystal display unit. The magnetic-sensing-type flow sensing system has a simple structure and is suitable for flow measurement of different types of fluids.

Description

technical field [0001] The invention relates to a magnetic-sensitive flow sensor system, in particular to a flow sensor of a magnetic-sensitive Hall element, which is suitable for gas and liquid pipeline flow measurement. Background technique [0002] With the development of instrument technology, more and more flow meters are applied to various industrial fields. According to the most popular and extensive classification method at present, flow meters can be divided into: positive displacement flowmeter, differential pressure flowmeter, float Flowmeter, turbine flowmeter, electromagnetic flowmeter, vortex flowmeter in fluid oscillation flowmeter, mass flowmeter and insertion flowmeter. Among them, the differential pressure flowmeter has always occupied a very important position in the flow measurement due to its own application characteristics. About 60% of the flow measurement in my country uses the throttling differential pressure flowmeter, which is widely used in indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/36G01F1/56
Inventor 俞建峰
Owner 俞建峰
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