Internal thread connection vortex flow meter

Internal thread connection vortex flow meterThe manufacturer of the production quotation for this flowmeter product model belongs tovortex flow meterClassification: For more direct sales price quotations of vortex street, threaded connection, and flow control instruments, please feel free to inquire by phone. Below are the product information details of internal threaded connection vortex street flow meters.

female connectionIt uses the Karman principle for flow measurement. When a cylindrical object is vertically inserted into the measuring tube, the fluid naturally alternates between regular vortices on both sides of the object (as shown in the figure below), and this vortex column is called a Karman vortex street. At d/D=0.281, the released vortex * is stable. D is the diameter of the pipeline. ）The release frequency of Karman vortex street and fluid flow can be expressed by the following equation:

F=st? v/d 式中：

F -- Release frequency of Karman vortex street

St coefficient

V -- -- -- Flow velocity

D-pillar width

The Strouhal coefficient is an important coefficient of vortex flowmeters, and within a certain range of Reynolds numbers, the Strouhal number approaches a constant. As shown in the figure below, in the straight part of the curve where St=0.17, the frequency of vortex release is proportional to the flow velocity. The detection frequency f can be used to obtain the flow velocity v, and the volume flow rate can be calculated from v. The vortex separation frequency used for measuring flow rate varies with flow velocity and is not affected by fluid density and viscosity. The local pressure pulsation generated by vortex separation is detected by a piezoelectric probe and converted into a pulse signal corresponding to the vortex frequency in the detection circuit. The pulse signal can also be converted into a 4-20mA standard current signal output through F/V and V/I.

Internal thread connection vortex flowmeterAdvantages:

1. The advantages of the LUGB series intelligent vortex flowmeter are excellent anti vibration performance, zero drift, and high reliability

2. Excellent anti vibration performance

Conduct extensive waveform and spectral analysis on the vortex flowmeter over a long period of time. We have designed a probe shape, wall thickness, height, probe rod diameter, and corresponding piezoelectric crystal, which are processed using advanced CNC lathes to ensure technical parameters such as coaxiality and smoothness. Cooperate with special processing techniques. Thus, the common problem of the inherent self oscillation frequency of vortex flowmeters affecting the signal can be overcome to the greatest extent possible. This is the unique technological advantage of the company in manufacturing vortex flowmeters. Make the vortex flowmeter produced by the company have excellent anti vibration ability.

3. The sensor of LUGB series intelligent vortex flowmeter has strong universality, which makes the sensor have good interchangeability. By using advanced CNC equipment to process the sensor body and vortex generator, the machining accuracy is ensured, thereby making the components (especially the vortex generator) highly versatile. This truly ensures that the repeatability and accuracy of the sensor are not affected by component replacement, and can generate strong and stable vortex signals.

4. The structure is simple and sturdy, with no movable parts, high reliability, and easy maintenance.

5. The detection element does not come into contact with the medium, with stable performance and long service life.

The sensor adopts a detection probe separated from the vortex generator, and a high-temperature resistant piezoelectric crystal is sealed inside the detection probe, which does not come into contact with the measured medium. Therefore, the LUGB vortex flowmeter has the characteristics of simple mechanism, good universality, and high stability.

6. Output pulse preference or analog signals proportional to the flow rate, with no zero drift, high accuracy, and convenient networking with computers.

7. Wide measurement range, with a range ratio of up to 20:1

When measuring volumetric flow rate with a vortex flowmeter, no compensation is required. The signal output by the vortex flowmeter is actually linearly related to the flow rate, that is, directly proportional to the volumetric flow rate. The purpose of pressure and temperature compensation is to obtain the density of the fluid, which can be multiplied by the volumetric flow rate. If the measured volumetric flow rate does not require compensation.

8. Low pressure loss. Measure the flow rate of combustible gas using a DN50 vortex flowmeter. If the flow rate qmax in the pipeline is 2003 and h,

9. Within a certain Reynolds number range, the flow characteristics are not influenced by fluid pressure, temperature, viscosity, density, composition, but only by the shape and size of the vortex generator.

10. Widely applicable, capable of measuring airflow and flow rate.

Internal thread connection vortex flowmeterTechnical Specifications:

1. Nominal caliber: DN15, optional plug-in type:

2. Scope of use: gases (air, oxygen, but not coal gas, natural gas, chemical gases, etc.), liquids (high-temperature water, oil, food liquids, chemical liquids, etc.), steam (saturated steam, superheated steam)

3 measurable medium temperatures: -40 ℃~280 ℃, -40 ℃~350 ℃

4 nominal pressure: ≤ 1.6Mpa ≤ 2.5Mpa ≤ 4Mpa

5 Accuracy Levels: Liquid Level 0.5, Gas and Steam Level 1.0, Insertion Type Level 2.5

6 Flow rate range: Liquid 0.6-6m/s, Gas 5-60m/s, Steam 5-70m/s

7 output signals:

Voltage pulse: Low level ≤ 1V, high level ≥ 6V, pulse width 0.4ms, load resistance>150

Standard current: 4-20mA, conversion accuracy of 0.1%, 9-digit display of cumulative flow (m3, kg, t), conversion accuracy of 0.1%

8 Power Supply:

When outputting voltage pulses:+12VDC, when outputting 4-20mA:+24VDC

On site LCD display: Powered by a 3.6V1 lithium battery, with a lifespan of over 2 years

9. Environmental temperature: Voltage pulse output: -30 ℃~+65 ℃, 4-20mA output: -10 ℃~+55 ℃, on-site LCD display: -25 ℃~+55 ℃

10 Table body material: 1Cr18Ni9Ti (supplied under other material agreements).

The above is the complete content of the vortex flowmeter threaded connection flowmeter product. Welcome to call and inquire about the selection and quotation of the vortex flowmeter threaded connection flowmeter.

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