RU2009144786A - VIBRATION FLOW METER AND CORRECTION METHOD FOR IMMERSED PHASE IN TWO-PHASE FLOW OF FLOWING MATERIAL - Google Patents

Abstract

 1. Vibratory flow meter (100), intended for correction for the immersed phase in a two-phase flow of flowing material, comprising a node (10) of the flow meter, including a drive (104), and the vibration meter of flow (100) is configured to create a vibrational reaction for the flowing material and additionally contains measuring electronics (20) connected to the node (10) of the flow meter and receiving a vibrational reaction, a vibration meter (100) flow, characterized in that:! measuring electronics (20) is configured to create a measured two-phase density of a two-phase flow using a vibrational reaction, to determine the calculated drive power required by the drive (104) of the flow meter assembly (10), and to calculate the density compensation coefficient using the liquid density of the liquid component of the two-phase flow, the density of the immersed phase, which is the immersed component, the measured density of the two-phase flow and the estimated power of the drive. ! 2. The vibratory flow meter (100) of claim 1, wherein the measuring electronics (20) is configured to multiply the drive voltage by the drive current to determine the design power of the drive. ! 3. The vibratory flow meter (100) according to claim 1, in which the measuring electronics (20) is configured to multiply the voltage of the sensor for measuring mechanical displacements by the drive current in order to determine the design power of the drive. ! 4. A vibratory flow meter (100) according to claim 1, in which the measuring electronics (20) is configured to solve an equation to determine the rated power

Claims (46)

1. A vibration meter for flow (100), intended for correction for the immersed phase in a two-phase flow of flowing material, comprising a node (10) for a meter for flow, including a drive (104), moreover, the vibration meter for flow (100) is configured to create a vibrational reaction for the flow material and further comprises measuring electronics (20) connected to the node (10) of the flow meter and receiving a vibrational reaction, a vibration meter (100) flow, characterized in that: measuring electronics (20) is configured to create a measured two-phase density of a two-phase flow using a vibrational reaction, determine the calculated drive power required by the drive (104) of the flow meter assembly (10), and calculate a density compensation coefficient using the liquid density of the liquid component of the two-phase flow, the density of the immersed phase, which is the immersed component, the measured density of the two-phase flow and the estimated drive power. 2. The vibratory flow meter (100) according to claim 1, in which the measuring electronics (20) is configured to multiply the drive voltage by the drive current to determine the design power of the drive. 3. The vibrational flow meter (100) according to claim 1, in which the measuring electronics (20) is configured to multiply the voltage of the sensor for measuring mechanical displacements by the drive current in order to determine the design power of the drive. 4. A vibratory flow meter (100) according to claim 1, in which the measuring electronics (20) is configured to solve the equation

to determine the calculated drive power, where K is the proportionality constant, I _d is the measured drive current, I ₀ is the drive current for a fraction with zero volume, E _PO is the sensor voltage for measuring mechanical displacements, and E _t is the planned voltage of the sensor for measuring mechanical displacements . 5. The vibrational flow meter (100) of claim 1, wherein the calculation of the density compensation coefficient comprises a solution to the equation

moreover, ρ _l is the fluid density, ρ _e is the density of the immersed phase, ρ _uut is the measured density of the two-phase flow, P _computed is the calculated drive power, and the terms C1 and C2 contain predetermined constants depending on the meter. 6. The vibratory flow meter (100) of claim 1, wherein the measuring electronics (20) is further configured to combine a density compensation coefficient with a measured two-phase flow density to provide a compensated two-phase flow density. 7. The vibratory flow meter (100) of claim 1, wherein the measuring electronics (20) is further configured to combine the density compensation coefficient with the measured density of the two-phase flow to provide a compensated density of the two-phase flow, determine the estimated drive power using the liquid density, the density of the immersed phase, the compensated density of the two-phase flow and the power indicator of the vibratory flow meter (100), as well as determine the accuracy of sweat measurements eye made vibrating flow meter (100), based on the difference between the value of the estimated drive power and the estimated drive power. 8. The vibratory flow meter (100) of claim 7, wherein the measuring electronics (20) is further configured to solve the equation

where ρ _comp is the compensated density of the two-phase flow in order to obtain the compensated volume fraction for the two-phase flow. 9. The vibrational flow meter (100) of claim 7, wherein determining the accuracy further comprises generating an alarm message if the calculated drive power differs from the estimated drive power by more than a predetermined deviation. 10. The vibratory flow meter (100) of claim 7, wherein determining the accuracy further comprises generating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating an excessive level of the immersed phase and further indicating the need to change flow conditions in a vibratory flow meter. 11. The vibrational flow meter (100) of claim 7, wherein determining the accuracy further comprises generating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating excessive gas bubble size and further indicating the need to change flow conditions in a vibratory flow meter. 12. The vibratory flow meter (100) of claim 7, wherein determining the accuracy further comprises generating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating an excessive level of the solid submerged phase and further indicating on the need to change flow conditions in a vibratory flow meter. 13. The vibrational flow meter (100) of claim 7, wherein determining the accuracy further comprises generating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value. 14. The vibrational flow meter (100) of claim 7, wherein determining the accuracy further comprises clarifying the compensated density of the two-phase flow if the calculated drive power is less than the estimated drive power by more than a predetermined lower limit value or if the calculated drive power exceeds the estimated drive power more than a predetermined upper limit value. 15. The vibrational flow meter (100) of claim 14, wherein the refinement of the compensated density of the two-phase flow comprises reducing the density compensation coefficient by an amount proportional to the difference between the calculated drive power and a predetermined lower limit value. 16. The vibratory flow meter (100) of claim 7, wherein determining the accuracy further comprises comparing the estimated drive power with the calculated drive power, generating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, and refinement of the compensated density of a two-phase flow by reducing the density compensation coefficient by an amount proportional to the difference between the rated drive power and limited lower limit value, if the calculated drive power is less than the estimated drive power by more than a predetermined lower limit value. 17. A correction method for an immersed phase in a two-phase flow of flowing material in a vibratory flow meter, comprising creating a measured density of a two-phase flow, characterized in that it comprises the following steps: determine the calculated drive power required by the drive, which is part of the flow meter assembly; and a density compensation coefficient is calculated using the density of the liquid being the liquid component of the two-phase flow, the density of the immersed phase being the submerged component, the measured density of the two-phase flow, and the calculated drive power. 18. The method according to 17, in which the step of determining the design power of the drive comprises multiplying the drive voltage by the drive current. 19. The method according to 17, in which the step of determining the design power of the drive comprises multiplying the interference voltage by the drive current. 20. The method according to 17, in which the step of determining the design power of the drive contains a solution to the equation

where K is the proportionality constant, I _d is the measured drive current, I ₀ is the drive current for a fraction with zero volume, E _PO is the voltage of the sensor for measuring mechanical displacements, and E _t is the planned voltage of the sensor for measuring mechanical displacements. 21. The method according to 17, in which the step of calculating the density compensation coefficient contains a solution to the equation

moreover, ρ _l is the liquid density, ρ _uut is the measured density of the two-phase flow, ρ _e is the density of the immersed phase, P _computed is the calculated drive power, and elements C1 and C2 contain predetermined constants depending on the meter. 22. The method of claim 17, further comprising combining a density compensation coefficient with a measured two-phase flow density to provide a compensated two-phase flow density. 23. The method according to 17, further comprising the following steps: combining a density compensation coefficient with a measured biphasic flow density to provide a compensated biphasic flow density; determine the estimated drive power using the density of the liquid, the density of the immersed phase, the compensated density of the two-phase flow and the power indicator of the vibratory flow meter; and determining the accuracy of the flow measurements made by the vibratory flow meter based on the difference between the estimated drive power and the calculated drive power. 24. The method according to item 23, further comprising the step of solving the equation

where ρ _comp is the compensated density of the two-phase flow in order to obtain the compensated volume fraction for the two-phase flow. 25. The method according to item 23, in which the step of determining the accuracy further comprises creating an alarm message if the calculated drive power differs from the estimated drive power by more than a predetermined deviation. 26. The method according to item 23, in which the step of determining the accuracy further comprises creating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating an excessive level of the immersed phase and further indicating the need to change the flow conditions in a vibratory flow meter. 27. The method according to item 23, in which the step of determining the accuracy further comprises creating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating an excessive size of gas bubbles and further indicating the need to change the flow conditions in a vibratory flow meter. 28. The method according to item 23, in which the step of determining the accuracy further comprises creating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating an excessive level of the solid submerged phase and further indicating the need to change the conditions flow in a vibratory flow meter. 29. The method according to item 23, in which the step of determining the accuracy further comprises creating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value. 30. The method according to item 23, in which the step of determining the accuracy further comprises clarifying the compensated density of the two-phase flow if the calculated drive power is less than the estimated drive power by more than a predetermined lower limit value or if the estimated drive power exceeds the estimated drive power by more than a predetermined defined upper limit value. 31. The method according to clause 30, in which the refinement of the compensated density of the two-phase flow comprises reducing the density compensation coefficient by an amount proportional to the difference between the calculated drive power and a predetermined lower limit value. 32. The method according to item 23, in which the step of determining the accuracy further comprises the following: compare the estimated drive power with the estimated drive power; create an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value; and specify the compensated density of the two-phase flow by reducing the density compensation coefficient by a value proportional to the difference between the calculated drive power and a predetermined lower limit value if the calculated drive power is less than the estimated drive power by more than a predetermined lower limit value. 33. A correction method for an immersed phase in a two-phase flow of flowing material in a vibratory flow meter, comprising creating a measured density of a two-phase flow, characterized in that it comprises the following steps: determine the calculated drive power required by the drive, which is part of the flow meter assembly; calculating a density compensation coefficient using the density of the liquid being the liquid component of the two-phase flow, the density of the immersed phase being the submerged component, the measured density of the two-phase flow, and the rated drive power; combining a density compensation coefficient with a measured biphasic flow density to provide a compensated biphasic flow density; determine the estimated drive power using the density of the liquid, the density of the immersed phase, the compensated density of the two-phase flow and the power indicator of the vibratory flow meter; and determine the accuracy of the flow measurements by the vibratory flow meter based on the difference between the value of the estimated drive power and the calculated drive power. 34. The method according to p, in which the step of determining the design power of the drive includes multiplying the voltage of the drive by the current of the drive. 35. The method according to p, in which the step of determining the design power of the drive includes multiplying the voltage of the sensor to measure mechanical displacements by the current of the drive. 36. The method according to p, in which the step of determining the design power of the drive contains a solution to the equation

where K is the proportionality constant, I _d is the measured drive current, I ₀ is the drive current for a fraction with zero volume, E _PO is the voltage of the sensor for measuring mechanical displacements, and E _t is the planned voltage of the sensor for measuring mechanical displacements. 37. The method of claim 33, wherein the step of calculating the density compensation coefficient comprises solving the equation

moreover, ρ _l is the liquid density, ρ _e is the density of the immersed phase, ρ _uut is the measured density of the two-phase flow, P _computed is the calculated drive power, and elements C1 and C2 contain predetermined constants depending on the meter. 38. The method according to clause 33, further comprising the step of solving the equation

where ρ _comp is the compensated density of the two-phase flow in order to obtain the compensated volume fraction for the two-phase flow. 39. The method of claim 33, wherein the step of determining accuracy further comprises generating an alarm message if the calculated drive power differs from the estimated drive power by more than a predetermined deviation. 40. The method according to clause 33, in which the step of determining the accuracy further comprises creating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating an excessive level of the immersed phase and further indicating the need to change the flow conditions in a vibratory flow meter. 41. The method according to claim 33, wherein the step of determining the accuracy further comprises generating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating an excessive size of gas bubbles and further indicating the need to change the flow conditions in a vibratory flow meter. 42. The method according to clause 33, in which the step of determining the accuracy further comprises creating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value, indicating an excessive level of the solid submerged phase and further indicating the need to change the conditions flow in a vibratory flow meter. 43. The method according to clause 33, in which the step of determining the accuracy further comprises creating an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value. 44. The method according to claim 33, wherein the step of determining the accuracy further comprises clarifying the compensated density of the two-phase flow if the calculated drive power is less than the estimated drive power by more than a predetermined lower limit value or if the estimated drive power exceeds the estimated drive power by more than a predetermined defined upper limit value. 45. The method according to item 44, in which the refinement of the compensated density of the two-phase flow comprises reducing the density compensation coefficient by an amount proportional to the difference between the calculated drive power and a predetermined lower limit value. 46. The method according to p, in which the step of determining the accuracy further comprises the following: create an alarm message if the calculated drive power exceeds the estimated drive power by more than a predetermined upper limit value; and specify the compensated density of the two-phase flow by reducing the density compensation coefficient by a value proportional to the difference between the calculated drive power and a predetermined lower limit value if the calculated drive power is less than the estimated drive power by more than a predetermined lower limit value.