Xi'an Shelok Instrument Co.,Ltd

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WhatsApp:8617391772603 WeChat:17391772603

Shelok Air Flow Meter Digital

Introduction

LUGB/E vortex flow meter is widely used in

petroleum, chemical, metallurgy, thermal, textile,

paper making and other industries for

superheated steam, saturated steam, compressed

air and general gases (oxygen, chlorine, chlorine

, natural gas, coal gas, etc.), water and

Measurement and control of liquids (such as water

, gasoline, alcohol, benzene, etc.)

YFV(1)

working principle

When a bluff vortex generator (bluff body) is set in the fluid, two regular vortex generators are

alternately generated from both sides of the vortex generator.

Vortex, this kind of vortex is called Karman vortex street, as shown in Figure (1)

The rows of vortices are arranged asymmetrically downstream of the vortex generator.

Suppose the frequency of vortex occurrence is f, the average velocity of the

incoming flow of the measured medium is V, the width of the vortex generating body

is d, and the diameter of the surface body is D. According to the principle of

Karman vortex street, there is the following relationship:

f=StV/d formula (1)

In the formula: f- the frequency of the Karman vortex generated on one side of the

generator

St-Strohal number (dimensionless number)

V-fluid Average velocity

d – the width of the vortex generator

It can be seen that the instantaneous flow can be calculated by measuring the

separation frequency of Carmen Vortex. Among them, the Strohal number (St) is a

dimensionless unknown.

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Shelok Air Flow Meter Digital

Introduction

LUGB/E vortex flow meter is widely used in

petroleum, chemical, metallurgy, thermal, textile,

paper making and other industries for

superheated steam, saturated steam, compressed

air and general gases (oxygen, chlorine, chlorine

, natural gas, coal gas, etc.), water and

Measurement and control of liquids (such as water

, gasoline, alcohol, benzene, etc.)

YFV(1)

working principle

When a bluff vortex generator (bluff body) is set in the fluid, two regular vortex generators are

alternately generated from both sides of the vortex generator.

Vortex, this kind of vortex is called Karman vortex street, as shown in Figure (1)

The rows of vortices are arranged asymmetrically downstream of the vortex generator.

Suppose the frequency of vortex occurrence is f, the average velocity of the

incoming flow of the measured medium is V, the width of the vortex generating body

is d, and the diameter of the surface body is D. According to the principle of

Karman vortex street, there is the following relationship:

f=StV/d formula (1)

In the formula: f- the frequency of the Karman vortex generated on one side of the

generator

St-Strohal number (dimensionless number)

V-fluid Average velocity

d – the width of the vortex generator

It can be seen that the instantaneous flow can be calculated by measuring the

separation frequency of Carmen Vortex. Among them, the Strohal number (St) is a

dimensionless unknown.

Reviews

There are no reviews yet.

Be the first to review “Shelok Air Flow Meter Digital”

Your email address will not be published. Required fields are marked *

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