Double-link two-dimensional piston type flowmeter

A piston type and flowmeter technology, applied in the field of flowmeter, can solve the problems of flow pulsation, bulky, pressure pulsation, etc., and achieve the effect of high dynamic frequency response, small volume and simplified structure
CN110346007APending Publication Date: 2019-10-18ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Publication Date
2019-10-18

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Abstract

The invention relates to a double-link two-dimensional piston type flowmeter comprising a left cylinder block and a right cylinder block. The left cylinder block and the right cylinder block are sealed and communicated by a connecting cylinder. A left metering unit is arranged in the left cylinder block; and a right metering unit is arranged in the right cylinder block. The left cylinder block andthe right cylinder block carries out liquid feeding and draining in turn by using the left metering unit and the right metering unit respectively. A Hall element is arranged on the outer wall of theconnecting cylinder; and a magnetic steel sensitive to the Hall element is arranged at the outer side of a shifting fork. A central processor receives a pulse electrical signal from the Hall element and calculates a flow rate based on the pulse electrical signal. According to the invention, liquid feeding and drainage are performed in turn based on the double-link mode of linkage of the left metering unit and the right metering unit; the symmetrical characteristic is realized; the liquid has no flow pulsation and the pressure pulsation after metering. Moreover, the double-link two-dimensionalpiston type flowmeter has advantages of simple structure, reliable work, high measurement accuracy, high dynamic frequency response, small flow and low pressure pulsation and the like.
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Description

technical field

[0001] The invention relates to a flowmeter, in particular to a double-connected two-dimensional piston flowmeter. Background technique

[0002] According to the movement mode of the piston, the piston flowmeter is divided into a rotary piston flowmeter and a reciprocating piston flowmeter. The reciprocating piston flowmeter has a complex structure and is often used in fuel dispensers at gas stations. The structure of the rotary piston flowmeter is relatively simple. The piston rotates under the action of the fluid, and the volume of the fluid equal to the volume of the metering chamber is discharged every revolution. Rotary piston flowmeters can be used to measure liquids such as water, oil, and liquid food.

[0003] However, the existing piston flowmeters all have the disadvantages of large volume and heavy mass, and there are flow pulsation and pressure pulsation. Contents of the invention

[0004] In order to overcome the above-mentioned defects of t...

Claims

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