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The SKPH series balanced flowmeter has made the enormous improvement to the tradition throttling gear, has the balanced rectification dominant character. Tradition throttling gear only then a circulation aperture, after the throttle, caused the fluid to lose the perfect condition; But is balanced the flowmeter to have many function apertures, can maximum limit become the flow field balanced rectification the ideal fluid, thus pressure differential meter's superiority display incisiveness. The balanced flowmeter is suitable nearly for all fuid measurement, is a fuid measurement technology revolution, at present was balanced the flowmeter already widely to apply professions and so on petroleum, chemical industry, metallurgy, electric power, natural gas, water treatment.
Product principle
　　The balanced flowmeter is one kind of revolutionary differential pressure type flow instrument, its principle of work and other pressure differential meter are the same, is based on the seal pipeline's in energy conversion principle: The square root which in pipeline's current capacity and the difference press in ideal fluid's situation is proportional; With determines the difference to press the value then to calculate in pipeline's current capacity according to the Bonuli equation. The balanced flow sensor is a porous disc throttle rectifier, installs on pipeline's section, each hole's size and the distribution have custom-made based on the special formula and the test data, is called the function hole. When the fluid passes through disc's function hole, the fluid will be been balanced the rectification, the turbulent flow by the minimum, forms the approximate ideal fluid, through takes presses the installment, may obtain the stable difference to press the signal, calculates the rate of volume flow, the mass flow according to the Bonuli equation.

Balanced flowmeter's characteristic
1st, the measuring accuracy is standard orifice 5~10 times
2nd, the hydrodynamic noise is the standard orifice 1/15
3rd, the permanent compression loss is the standard orifice 1/3
4th, pressure build-up compared to standard orifice quick 2 times
5th, the minimum straight length of pipe may be smaller than 0.5D
First, the linearity is high, the duplication is good
The balanced flow sensor has the symmetrical vesicular structure characteristic, can carry on balanced to the flow field, reduced the turbulent flow, the vibration and the signal noise, the flow field stability enhances greatly, causes the linearity to promote 5~10 times compared to the orifice, the duplication to enhance 54%, is 0.15%, looking from its overall performance, the balanced flowmeter belongs to the upscale flowmeter ranks.
when the 5:1 measuring range compares, the linearity may reach ±0.3%;
when the 7:1 measuring range compares, the linearity may reach ±0.5%;
when the 10:1 measuring range compares, the linearity may reach ±1.0%
Second, the straight length of pipe requests lowly
Because the balanced flow sensor the flow field is stable, and the pressure build-up is quicker than two times the orifice, great short direct length of pipe request its around straight length of pipe generally after 3D 1D, smallest may be smaller than 0.5D, thus omits the massive straight lengths of pipe, particularly special expensive material pipeline.
Third, reduced permanent compression loss
The porous symmetrical balanced design, reduced the turbulent flow shearing force and the turbulent flow formation, reduced the kinetic energy loss, under the similar survey operating mode, compared with the orifice reduces 2.5 time of permanent compressions to lose, thus has saved the quite big movement energy cost, was one kind of energy conservation measuring appliance, was worth promoting massively.
Fourth, bears sully not Yi Du
The porous symmetrical balanced design, reduced the turbulent flow shearing force and the turbulent flow formation, thus reduced the detention dead area formation greatly, guaranteed that the sully medium through many holes, reduced the fluid hole smoothly the opportunity which stops up.
Fifth, may replace the orifice directly
It has the same application method and the contour with the orifice, therefore may carry on the replace directly, does not need any tubing the change and the correlation measuring appliance's change, in the very suitable entire factory energy measurement transformation to change the orifice the balanced flowmeter.
Sixth, the flow measurement scope is wide
According to the test result, we understand: The balanced flowmeter's performance, enables its speed of flow to be possible from slightly to the speed of sound; Its smallest Reynolds number may be lower than 200, the biggest Reynolds number is bigger than 107; Beta the value may choose 0.25~0.90.
Seventh, the long-term stability is good
Because its turbulent flow shearing force's obvious reduction, reduced the medium with to reduce expenses large scale a direct friction, it Beta value maintained for a long time invariable, the entire measuring appliance not movable part, therefore might maintain the stability for a long time.
Eighth, observable high temperature high pressure medium
With throttling gears and so on orifice is the same, the operating temperature pressure is decided by the pipeline and flange's material quality and the rank, the operating temperature may reach 850℃, the working pressure may reach 42MPa.
Ninth, observable complex operating mode medium
As a result of its special structural design, enables it to have the special performance, it may carry on was mad that the fluid two, each kind of gaseous mixture (for example gas, methane, coal gas and so on), each kind of low temperature gas (for example LNG, liquid nitrogen, liquid oxygen, liquid argon, liquid hydrogen, liquid chlorine, liquefied ethylene, liquified petroleum gas and so on), are mad the fluid two-phase media (for example moisture), the pulp, the heterogeneity current of water, the vibration current of water, the electromagnetic interference medium and the double counter current (, because is balanced about flowmeter full symmetry).

Product shaping: