Abstract: the
flow meter of the pitot tube in the energy detection industry analysis of the information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.
In energy monitoring instrument, in addition to electricity meters, with solid coal weighing instrument, other gaseous, liquid, energy (
Such as crude oil, refined oil, heavy oil, residual oil, natural gas, liquefied gas, gas)
And can load working medium (
Water, steam)
All necessary using flow meter.
More flow meter manufacturers choose model price quote you are welcome to inquire, here is the pitot tube of flow meter in the energy detection of industry analysis for details.
In energy monitoring instrument, in addition to electricity meters, with solid coal weighing instrument, other gaseous, liquid, energy (
Such as crude oil, product oil, heavy oil, residual oil, natural gas, liquefied gas, gas & hellip;
…
）
And can load working medium (
Water, steam)
All necessary using flow meter.
Even for solid coal energy, continuous operation in the process industry, also can use blunt plate type flowmeter, or microwave gas-solid two phase flow meter.
As a result, the flow meter play a significant role in the energy monitoring instrument, irreplaceable important position.
“
11th five-year plan & throughout;
Zui under big determination, the central during the economic construction of the saving energy and reducing consumption as a top priority, in ensuring that GDP doubled at the same time, should be a 20% drop in energy consumption per unit of output for five years.
Industrial energy consumption in China accounted for 68% of total energy, energy consumption accounts for only 11 people's life.
4%, so the energy saving should focus on the industry, especially in energy-intensive industries, such as electric power, metallurgy, steel, petrochemical, building materials, transportation, etc.
Several kinds of energy monitoring flow meter is: 1, the throttle device based on the differential throttling, measuring the square root of the differential pressure flow volume.
For a long time this kind of instrument can bear due to the bad working condition, and the existing international standards as the basis, has dominated the flow meter 60 to 70% of the market, the type as many as twenty or thirty kinds.
2, plug-in: simple structure, convenient installation, low price, and don't stop with fold, but low accuracy, applies only to large pipe flow detection, in energy monitoring can be used in the occasion of required precision is not high.
(1) measuring point velocity: by measuring the pipe flow calculation flow meter, such as double; these pipes
Plug-in vortex, turbine, electromagnetic, pitot tube.
According to the ISO7145 evaluation, accuracy is & plusmn;
Accuracy of 3%, if less than 30 d, straight pipe will be below & plusmn;
* 3 5%.
The l-type pitot parameters: does pitot tube measurement medium: a gas or liquid that is compatible with 304 stainless steel.
Does pitot main use: measuring total pressure, static pressure and dynamic pressure in the piping (
The pressure difference)
, also can calculate the velocity and flow rate.
Does pitot tube instrument connections: can connect all kinds of pressure gauges (
Such as U type pressure gauge, tilt micromanometer, inclined tube differential pressure gauge and digital pressure gauge, compensation micro pressure gauge, etc. )
And differential pressure
transmitter, secondary instrument, and imports all kinds of pressure gauges.
When pitot use temperature: & le;
600 ℃ when standards: gb JJG518 -
98 does pitot use humidity: & le;
HR45 % when measuring velocity range: air velocity & le;
40m/s；
Water velocity & le;
25 m/s when pitot tube standard coefficient: l-type pitot tube in 0.
99-1.
01;
The S type pitot tube in 0.
81-0.
86.
Zui recent launch in the market a similar deformation pitot tube, zui big advantage is difficult to jam, above the pipeline put three, each with a differential pressure transmitter, the price is more expensive.
Allegedly ISO3966 design, but did not reach the standard required at the request of the arrangement of 20 points on cross section.
Article the error analysis is done in the * 4, does not take into account the velocity distribution is not ideal, affect the accuracy of zui big interference coefficient & gamma;
* 5.
Therefore, the measurement error will be beyond & plusmn;
3%.
(2) to measure the radial velocity more: a typical instrument for velocity-equalizing tube, because the measuring point, the accuracy is better than that of the measuring point velocity insertion type flowmeter.
Usually only multipoint velocity of cross section diameter direction, when the need to improve the accuracy, can also be inserted into 900 two velocity-equalizing tube, is more conform to the requirements of the measuring point of ISO3966.
3 there is no resistance, a flow meter.
This kind of instrument is characterized by simple mechanical structure, the pipe without any resistance, low pressure loss, high accurate, zui has the development potential of flow meter, such as ultrasonic, Koch, electromagnetic, nearly five years market annual growth rate reached 10.
4%, 6.
9%, 2.
4%.
Development trends: at present there are many types of flow meters, are in a & other;
Throughout the spring and autumn period and the warring states period &;
The state, but in the rapid development of science and technology, new instrument such as electromagnetic, ultrasonic, coriolis, with its simple structure, perfect functions, is becoming more and more get the favour of the user.
Classic type (
Orifice, nozzle, venturi)
Or because of the loss of pressure is big, straight pipe is too long to satisfy such as faults, a downward trend of market development, annual growth rate for -
2.
3%.
New throttling device are constantly emerging, so new type flow meter instead of classic traditional instrument would be a relatively long process, not overnight.
Pitot tube in addition to used to measure speed, at the same time, also with a variety of other functions.
In scientific research, production, teaching, environmental protection, and tunnel, mine ventilation, energy management, commonly used pitot tube measurement of ventilation pipes, industrial piping, furnaces flue gas velocity, after conversion to determine the flow rate, measurement of flow velocity in the pipe.
With pitot speed and determine traffic, according to have reliable theory, easy to use, accurate, is a classic wide measuring method.
In addition, it also can be used to measure the pressure of the fluid.
Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
Beijing Sincerity Automatic Equipment Co., Ltd is one of the most-trusted manufacturing suppliers to the domestic markets.
Beijing Sincerity Automatic Equipment Co., Ltd is a mass flow meter services company that creates coriolis density meter mass flow meter for v shape
coriolis mass flow meter.Our services have brought great value to customers. Welcome to visit us at Sincerity Flow Meter.
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