CN107255501A - Gas-liquid mixed streaming vortex-shedding meter demarcates detection means system and control method - Google Patents

Abstract

The invention provides a gas-liquid mixed flow type vortex flowmeter calibration detection device system and control method, the system includes a calibration solution output unit, a gas injection unit, a calibration pipeline, a flow control unit, a standard metering barrel and a calibration detection unit; The calibration detection device system and control method of the gas-liquid mixed flow vortex flowmeter in the invention can not only output the same engineering parameters as the permanent magnet vortex flowmeter, but also output the gas-liquid mixed conductive measured medium solution The flow rate of the bubble content, the total amount of bubbles and other parameters can not only meet the calibration of permanent magnet vortex flowmeter products, but also meet the calibration of gas-liquid mixed flow vortex flowmeter products; the invention can be widely used in petrochemical industry , urban water supply pipelines and other fields can effectively detect whether there is leakage in the pipeline, and the invention has the characteristics of high calibration detection accuracy and wide application range.

Description

Gas-liquid mixed flow vortex flowmeter calibration detection device system and control method

technical field

The invention relates to the field of flowmeter calibration, in particular to a gas-liquid mixed flow type vortex flowmeter calibration detection device system and control method.

Background technique

The vortex flowmeter is a kind of flowmeter designed and manufactured by applying the Karman vortex street principle and modern electronic technology. It is researched and produced according to the Karman vortex street principle (Kármán Vortex Street). Gas, liquid, steam and other media. Vortex flowmeters are mainly divided into thermal type, ultrasonic type, capacitive type, stress type, strain type, vibration type, photoelectric type, optical fiber type and electromagnetic type according to the detection method. Among them, the permanent magnet type vortex flowmeter is mainly used Used in petrochemical, metallurgical machinery, food, paper, and urban heating, water supply and other fields. However, the existing calibration method and calculation output of the permanent magnet vortex flowmeter are relatively simple, and only output the flow rate of the conductive measured medium solution related to the signal vortex frequency, and then obtain the calculated output and the measured conductive medium solution. Flow rate-related volume flow, total volume and other engineering parameters, however, permanent magnet vortex flowmeters cannot output parameters such as flow rate and total volume of bubbles in the gas-liquid mixed conductive measured medium solution.

The working principle of the gas-liquid mixed flow vortex flowmeter is basically the same as that of the permanent magnet vortex flowmeter. The gas-liquid mixed flow vortex flowmeter can be used in the fields where the permanent magnet vortex flowmeter can be applied. In addition, the gas-liquid mixed flow vortex flowmeter can output the same engineering parameters as the permanent magnet vortex flowmeter, and it can also output the flow rate of the gas-liquid mixed conductive conductive medium solution, the total number of bubbles Therefore, the gas-liquid mixed flow vortex flowmeter can be used in some special occasions, and these occasions are widely used in petrochemical and urban water supply pipelines. However, the existing calibration devices cannot provide gas-liquid mixing. The measured medium solution with conductivity cannot meet the calibration requirements of gas-liquid mixed flow vortex flowmeter products. Therefore, it is necessary to propose a new device system and control method to solve the above technical problems.

Contents of the invention

In view of the shortcomings of the prior art described above, the present invention provides a gas-liquid mixed flow vortex flowmeter calibration detection device system and control method to solve the above technical problems.

The gas-liquid mixed flow vortex flowmeter calibration detection device system provided by the present invention includes:

Calibration solution output unit, used to output the calibration solution;

The gas injection unit is used to inject gas to the output calibration solution;

The calibration pipeline is used to make the output calibration solution sequentially pass through the gas-liquid mixed flow vortex flowmeter to be calibrated;

A flow control unit for controlling gas flow and calibration solution flow;

Standard metering barrel, used for standard metering of gas-liquid mixed flow vortex flowmeter for production calibration and testing;

The calibration detection unit is used for calculating the calibration output coefficient and calculating the accuracy of the gas volume flow rate.

Further, it also includes a flow totalizer, which is used to control the output of a stable and constant gas flow to the calibration solution, and the calibration solution is a conductive measured medium solution;

Calculate the accuracy of gas volume flow by the following formula:

FS%=fabs(V _a -V _a1 )/V _a ×100%

Among them, FS is the accuracy of the gas volume flow, V _a1 is the output gas volume flow, and Va is the gas volume flow output controlled by the flow totalizer.

Further, the calibration output coefficient is calculated by the following formula:

K _p =K _p1 V _a /V _a1

Among them, K _p is the calibration output coefficient, and K _p1 is the coefficient preset by the converter before calibration of the gas-liquid hybrid vortex flowmeter.

Further, the flow control unit controls the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, and the calibration detection unit delays recording the signal frequency output by the gas-liquid hybrid vortex flowmeter, and sequentially records the signal frequency Carry out segmental value interception, respectively as the calibration point of the flow rate;

The flow control unit adjusts the flow rate of the calibration solution to meet the frequency value of the calibration point;

The calibration detection unit resets the total amount of metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharges the calibration solution;

The flow control unit controls the calibration solution to refill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, and the calibration detection unit records the total volume indication of the gas-liquid hybrid vortex flowmeter to be calibrated and the indication of the standard metering barrel;

Repeat the above steps until the calibration of all calibration points is completed.

Further, the flow control unit controls the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, and the calibration detection unit delays recording the signal frequency output by the gas-liquid hybrid vortex flowmeter, and sequentially records the signal frequency Carry out segmental value interception, respectively as the verification point of the flow rate;

Adjust the flow rate of the conductive measured medium solution to meet the frequency value of the verification point;

The calibration detection unit resets the total amount of metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharges the calibration solution;

The flow control unit controls the calibration solution to refill the calibration pipe and the gas-liquid hybrid vortex flowmeter to be calibrated, and the calibration detection unit records the total volume indications of all gas-liquid hybrid vortex flowmeters and the indications of the standard metering barrel;

Repeat the above steps until the calibration detection of all detection points is completed;

The calibration detection unit sequentially intercepts the segmented value according to the same signal frequency as the verification point, and uses it as the gas content detection flow point under the constant flow of the conductive measured medium solution;

The calibration detection unit selects gas injection volume points with different values, and injects them into the conductive measured medium solution respectively;

Adjust the flow rate of the conductive measured medium solution to meet the frequency value of the verification point. The flow control unit controls the output of the gas injection volume that is the same as the selected gas injection volume point. The calibration detection unit delays to record the current gas injection volume value, and each gas-liquid Bubble content in the conductive measured medium solution output by the hybrid vortex flowmeter;

Repeat the above steps until the verification of the gas content in the conductive measured medium solution at all gas injection points is completed, and the verification of the gas content in the conductive measured medium solution at all gas injection points under all frequency points is completed, and the bubble content detection is completed.

The present invention also provides a calibration detection control method for a gas-liquid mixed flow vortex flowmeter, including:

Draw the calibration solution and output it;

Inject gas into the output calibration solution, and make the output calibration solution pass through the gas-liquid mixed flow vortex flowmeter to be calibrated sequentially;

Control gas flow and calibration solution flow;

According to the gas flow rate and calibration solution flow rate and the reading of the standard metering barrel, calculate the calibration output coefficient and the accuracy of the gas volume flow rate calculation, and complete the calibration and measurement of the gas-liquid mixed flow vortex flowmeter to be calibrated.

Further, control the output of a stable and constant gas flow to the calibration solution, the calibration solution is a conductive measured medium solution;

Calculate the accuracy of gas volume flow by the following formula:

FS%=fabs(V _a -V _a1 )/V _a ×100%

Among them, FS is the accuracy of the gas volume flow, V _a1 is the output gas volume flow, and V _a is the gas volume flow output controlled by the flow totalizer.

Further, the calibration output coefficient is calculated by the following formula:

K _p =K _p1 V _a /V _a1

Among them, K _p is the calibration output coefficient, and K _p1 is the coefficient preset by the converter before calibration of the gas-liquid hybrid vortex flowmeter.

Further, control the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, record the signal frequency output by the gas-liquid hybrid vortex flowmeter in a delayed manner, and sequentially intercept the signal frequency in segments, Respectively as the calibration point of the flow rate;

Adjust the flow rate of the calibration solution through the flow control unit to meet the frequency value of the calibration point;

Clear the total metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharge the calibration solution;

Control the calibration solution to refill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, record the total volume indication of the gas-liquid hybrid vortex flowmeter to be calibrated and the indication of the standard metering barrel;

Repeat the above steps until the calibration of all calibration points is completed.

Further, control the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, record the signal frequency output by the gas-liquid hybrid vortex flowmeter in a delayed manner, and sequentially intercept the signal frequency in segments, As the verification point of the flow rate respectively;

Adjust the flow rate of the calibration solution through the flow control unit to meet the frequency value of the verification point;

Clear the total metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharge the calibration solution;

Control the calibration solution to refill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, record the total volume indications of all gas-liquid hybrid vortex flowmeters and the indications of the standard metering barrel;

Repeat the above steps until the calibration detection of all detection points is completed;

According to the same signal frequency as the verification point, segmental value interception is sequentially carried out, and it is used as the gas content detection flow point under the constant flow of the conductive measured medium solution;

Select gas injection volume points with different values, and inject them into the conductive measured medium solution respectively;

Adjust the flow rate of the conductive measured medium solution through the flow control unit to make it meet the frequency value of the verification point, control the output of the gas injection volume that is the same as the selected gas injection volume point, and record the current gas injection volume value with a delay, and each gas-liquid mixed type The bubble content in the conductive measured medium solution output by the vortex flowmeter;

Repeat the above steps until the verification of the gas content in the conductive measured medium solution at all gas injection points is completed, and the verification of the gas content in the conductive measured medium solution at all gas injection points under all frequency points is completed, and the bubble content detection is completed.

Beneficial effects of the present invention: the gas-liquid mixed flow vortex flowmeter calibration detection device system and control method in the present invention can not only output the same engineering parameters as the permanent magnet vortex flowmeter, but also output gas-liquid mixed The parameters such as the flow rate of the bubble content in the measured medium solution, the total amount of bubbles, etc., can not only meet the calibration of permanent magnet vortex flowmeter products, but also meet the calibration of gas-liquid mixed flow vortex flowmeter products; The invention can be widely used in the fields of petrochemical industry, urban water supply pipelines, etc., and can effectively detect whether there is leakage in the pipeline. The invention has the characteristics of high calibration detection accuracy and wide application range.

Description of drawings

Fig. 1 is a schematic diagram of the system structure of the present invention.

Fig. 2 is a schematic flow chart of the method of the present invention.

Explanation of reference signs:

1-calibration solution device, 2-solution pump, 3-argon cylinder, 4-pressure reducing valve, 5-air valve switch, 6-flow controller, 7-flow totalizer, 8-first electric valve, 9 -Hydraulic cylinder, 10-first vortex flowmeter, 11-fixed bracket, 12-installation fixed platform, 13-second vortex flowmeter, 14-third vortex flowmeter, 15-second electric valve, 16 -Calibration pipeline, 17-Standard measuring barrel, 18-Drain pneumatic valve, 19-Constant pressure and constant flow tank.

detailed description

Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the component layout type may also be more complicated.

As shown in Figure 1, the gas-liquid mixed flow vortex flowmeter calibration detection device system in this embodiment includes:

Calibration solution output unit, used to output the calibration solution;

The gas injection unit is used to inject gas to the output calibration solution;

The calibration pipeline 16 is used to make the output calibration solution sequentially pass through the gas-liquid mixed flow vortex flowmeter to be calibrated;

A flow control unit for controlling gas flow and calibration solution flow;

The standard metering barrel 17 is a standard metering device used for production calibration and testing of the gas-liquid mixed flow vortex flowmeter; the calibration detection unit is used for calculating the calibration output coefficient and calculating the accuracy of the gas volume flow.

The calibration solution output unit in this embodiment includes a calibration solution device 1, a solution pump 2, and a constant current and constant pressure tank 19. The gas injection unit includes an argon bottle 3, and the flow control unit includes a pressure reducing valve 4, an air valve switch 5, a flow rate The controller 6, the hydraulic cylinder 9, the electric valve 8 and the electric valve 15 calculate the calibration output coefficient and the accuracy of the gas volume flow through the mark detection unit to complete the calibration detection of the gas-liquid mixed flow vortex flowmeter.

In this embodiment, the gas-liquid hybrid vortex flowmeter measures the measured medium solution must have conductivity characteristics, because the sensor detects the frequency of the output eddy signal is proportional to the flow rate of the conductive measured medium solution, therefore, the establishment of the vortex signal Mathematical relationship between frequency f1 and conductivity measured medium solution volume flow rate v1:

v ₁ = k ₁ f ₁ (1)

In the formula, v1 is the average flow velocity _of the conductive measured medium solution passing through the sensor pipeline, m/s; f1 is the frequency of the vortex signal, Hz; k1 is the coefficient related to the volume flow rate, which is also required to be calibrated and solved in the actual production calibration Coefficient, dimensionless;

The flow velocity v ₁ of the conductivity measured medium solution in the pipeline obtained by applying the formula (1), and the conductivity of the vortex flowmeter flowing through the vortex flowmeter can be obtained according to the cross-sectional area of the sensor’s own pipeline and the cumulative amount per unit time passing through the cross-sectional area. The total volume of the measured medium solution:

In the formula, q ₁ is the total volume of the conductive measured medium solution, m ³ ; S is the cross-sectional area of the vortex flowmeter sensor measuring pipeline, m ² ; t _i is the unit time, S.

Before the measurement calibration of the gas-liquid hybrid vortex flowmeter, the coefficient k is preset and assigned an initial value; then the conductive measured medium solution is completely filled with the pipeline and flows through the vortex generator for a period of time, and then The total amount q measured by the flowmeter and the measurement indication q ₁ of the standard metering barrel are calculated by the calibration output coefficient k ₁

In this embodiment, when the measured medium solution contains a certain proportion of air bubbles and flows through the sensor signal detection electrode, the vortex street signal generated behind the vortex generator is strong and stable, and as the gas-liquid two-phase flow contains gas The increase of the rate, the existence of bubbles affects the formation and shedding of the vortex, the energy of the vortex signal and the approximate vortex signal gradually weakens, and the mathematical relationship between the signal-to-noise ratio of the vortex signal and the volume flow rate Va of the bubble content of the conductive measured medium solution is established:

V _a =K _p /(10×lg(P _s /P _n )) (4)

In the formula, Va is the volume flow rate of the bubble content of the conductive measured medium solution, L/min; K _p is the coefficient related to the measurement of the conductive measured medium solution bubble content by the gas-liquid hybrid vortex flowmeter sensor, dimensionless; P _s is the power spectral density of the flow signal when the conductive measured medium solution contains no bubbles, W/Hz; P _n is the power spectral density of the flow signal when the conductive measured medium solution contains bubbles, W/Hz.

Before carrying out the measurement calibration of the gas-liquid hybrid vortex flowmeter, preset the coefficient K _p1 and assign the initial value; then turn on the flow totalizer 7, set and control the flow controller 6, so that the conductive measured medium solution is Inject a stable and constant flow of gas, and after working for a period of time, calibrate the output coefficient k _p based on the calculated output bubble volume flow V _a1 of the gas-liquid hybrid vortex flowmeter and the gas volume flow indication V _a of the metering output of the flow totalizer Calculation, that is, the final coefficient required by the meter to detect the volume flow output of the medium solution and the volume total output.

K _p =K _p1 V _a /V _a1 (5)

In this embodiment, a flow totalizer 7 is also included, which is used to control the output of a stable and constant gas flow to the calibration solution, and the gas output is controlled by the flow totalizer, and the accuracy of the gas volume flow is calculated by the following formula:

FS%=fabs(V _a -V _a1 )/V _a ×100% (6)

Among them, FS is the accuracy of the gas volume flow, V _a1 is the output gas volume flow, and V _a is the gas volume flow output controlled by the flow totalizer.

Correspondingly, this embodiment also provides a calibration detection control method for a gas-liquid mixed flow vortex flowmeter, including extracting and outputting a calibration solution;

Inject gas into the output calibration solution, and make the output calibration solution pass through the gas-liquid mixed flow vortex flowmeter to be calibrated sequentially;

Control gas flow and calibration solution flow;

According to the gas flow rate and the calibration solution flow rate, calculate the calibration output coefficient and the accuracy of the gas volume flow rate calculation, and complete the calibration and measurement of the gas-liquid mixed flow vortex flowmeter to be calibrated.

In this embodiment, the flow control unit controls the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, and the calibration detection unit delays recording the signal frequency output by the gas-liquid hybrid vortex flowmeter, and sends the The above-mentioned signal frequencies are sequentially intercepted by segments, and they are respectively used as the calibration points of the flow rate;

Adjust the flow rate of the calibration solution to meet the frequency value of the calibration point;

The calibration detection unit resets the total amount of metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharges the calibration solution;

The flow control unit controls the calibration solution to refill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, and the calibration detection unit records the total volume indication of the gas-liquid hybrid vortex flowmeter to be calibrated and the indication of the standard metering barrel;

Repeat the above steps until the calibration of all calibration points is completed.

The flow control unit controls the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated. The calibration detection unit delays recording the signal frequency output by the gas-liquid hybrid vortex flowmeter, and divides the signal frequency in turn. Segment value interception, respectively as the verification point of the flow;

Adjust the flow rate of the calibration solution to meet the frequency value of the verification point;

The calibration detection unit resets the total amount of metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharges the calibration solution;

The flow control unit controls the calibration solution to refill the calibration pipe and the gas-liquid hybrid vortex flowmeter to be calibrated, and the calibration detection unit records the total volume indications of all gas-liquid hybrid vortex flowmeters and the indications of the standard metering barrel;

Repeat the above steps until the calibration detection of all detection points is completed;

The calibration detection unit sequentially intercepts the segmented value according to the same signal frequency as the verification point, and uses it as the gas content detection flow point under the constant flow of the conductive measured medium solution;

The calibration detection unit selects gas injection volume points with different values, and injects them into the conductive measured medium solution respectively;

Adjust the flow rate of the conductive measured medium solution to meet the frequency value of the verification point. The flow control unit controls the output of the gas injection volume that is the same as the selected gas injection volume point. The calibration detection unit delays to record the current gas injection volume value, and each gas-liquid Bubble content in the conductive measured medium solution output by the hybrid vortex flowmeter;

Repeat the above steps until the verification of the gas content in the conductive measured medium solution at all gas injection points is completed, and the verification of the gas content in the conductive measured medium solution at all gas injection points under all frequency points is completed, and the bubble content detection is completed.

List a specific embodiment below and describe in detail:

Take DN40 caliber as an example,

1) Adjust the first electric valve 8 and the second electric valve 15 to the fully open state, so that the conductive calibration medium solution is fully filled with the calibration pipeline 16 and the first gas-liquid hybrid vortex flowmeter 10 to be calibrated, the second gas Liquid hybrid vortex flowmeter 13, the third gas-liquid hybrid vortex flowmeter 14;

2) Delay for 2 minutes, then record the signal frequency output by the gas-liquid hybrid vortex flowmeter 10, and intercept the frequency according to the ratio of 1.0, 0.8, 0.6, 0.4, 0.2, 0.1, 0.05, 0.02, as Calibration points of the flow rate, a total of 8 flow calibration points from front to back;

3) Adjust the opening of the electric valve 8 so that it meets the first calibrated frequency value, then close the second electric valve 15, and clear the total amount measured and output on the first gas-liquid hybrid vortex flowmeter 10. Zero operation, open the drainage pneumatic valve 18 at the same time, discharge the conductive measured medium solution in the standard metering barrel 17, and remove it to the maximum extent;

4) Delay for 1 minute, close the drainage pneumatic valve 18;

5) Manually and quickly open the electric valve 15 to the fully open state, delay the measurement for about 3-5 minutes, and then close the second electric valve 15;

6) Record the total volume readings of the first to third gas-liquid hybrid vortex flowmeters from front to back, and then record the readings of the standard metering barrel 17;

7) Repeat step 3) to step 6) to complete the calibration of other frequency output points;

8) Carry out the instrument coefficient k of the gas-liquid hybrid vortex flowmeter to be calibrated sequentially from front to back, and then write the coefficient k corresponding to the calculated output of each unit into the converter corresponding to the gas-liquid hybrid vortex flowmeter to be calibrated ;

9) According to the signal frequency output by the gas-liquid hybrid vortex flowmeter 10 recorded in step 2), the numerical value is also intercepted according to the ratio of the frequency 1.0, 0.8, 0.6, 0.4, 0.2, 0.1, as the gas flow calibration under constant flow choose;

10) Adjust the opening of the first electric valve 8 so that it meets the frequency value of the first constant current point in step 9), and keep the second electric valve 15 and the drainage pneumatic valve 18 in a fully open state;

11) According to the different calibers of gas-liquid hybrid vortex flowmeter sensors, select a certain number of points for gas flow calibration. In this example, a gas-liquid hybrid vortex flowmeter with a caliber of DN40 is selected for gas flow calibration. Select the gas injection volume of 6.0L/min, 5.0L/min, 4.0L/min 3.0L/min, 2.0L/min, 1.0L/min, 0.5L/min to measure the gas content in the conductive measured medium solution Fixed point;

12) Turn on the gas valve switch 5, and then set the flow meter calculator 7 according to the gas injection volume (6.0L/min) at the first point in step 11), delay for 2 minutes, and wait for the gas injection to stabilize;

12) Record the value of the current gas injection volume, and then record the signal-to-noise ratio of the vortex signal output from the first to third gas-liquid hybrid vortex flowmeters from the front to the back, that is, 10×lg(P _s /P _n ) ;

14) Repeat steps 12) to 13) to complete the calibration of the gas content in the conductive measured medium solution at other gas injection points;

15) Repeat steps 10) to 14) to complete the calibration of the gas content in the conductive measured medium solution at all gas injection points under all frequency points;

16) Carry out the calculation of the correlation coefficient Kp of the gas-liquid hybrid vortex flowmeter to be calibrated and the bubble content output in sequence from front to back, and then write the calculated results into the corresponding gas-liquid hybrid vortex flowmeter to be calibrated in the converter;

17) The maximum signal frequency output by the first gas-liquid hybrid vortex flowmeter 10 in step 2) is numerically intercepted according to the ratio of 1.0, 0.75, 0.5, 0.25 and 0.1, and used as the verification point of the flow rate;

18) Manually adjust the opening of the first electric valve 8 to make it meet the frequency value of the first test, then close the second electric valve 15, and perform a zero-clearing operation on the total metering output of the vortex flowmeter, and at the same time Open the drainage pneumatic valve 18 to discharge the conductive measured medium solution in the standard metering barrel 17 to remove it to the maximum extent;

19) Delay for 1 minute, close the drainage pneumatic valve 18;

20) Manually quickly open the second electric valve 15 to the fully open state, delay the measurement for about 3-5 minutes, and then close the second electric valve 15;

21) Record the total volume indication of the gas-liquid hybrid vortex flowmeter first to third from front to back, and then record the indication of the standard metering barrel;

22) Repeat step 18) to step 21) to complete the verification of other frequency output points;

23) Calculate the accuracy FS% of the instrument of the gas-liquid hybrid vortex flowmeter to be verified sequentially from front to back, and complete the calibration test;

24) According to step 17), record the 5 signal frequency points output by the first gas-liquid hybrid vortex flowmeter 10 as gas flow detection, and also perform according to the frequency ratio of 1.0, 0.8, 0.6, 0.4, 0.2, 0.1 Numerical interception, as the gas content detection flow point under the constant flow of the conductivity measured medium solution;

25) Select gas injection volumes of 6.0L/min, 4.0L/min, 2.0L/min, 1.0L/min, and 0.5L/min to measure the gas content in the conductive measured medium solution;

26) Manually adjust the opening of the first electric valve 8 to make it meet the frequency value of the first verification, and keep the second electric valve 15 and the drainage pneumatic valve in a fully open state;

27) Control and adjust the flow totalizer 7 to make it control the mass flow controller to output the gas injection volume of 6.0L/min;

28) Delay for about 2 minutes, record the value of the current gas injection volume, and then record the air bubble content in the conductive measured medium solution output by the gas-liquid hybrid vortex flowmeter 1-3 from the front to the back;

29) Repeat step 27) to step 28) to complete the verification of the gas content in the conductive measured medium solution at other gas injection points;

30) Repeat step 24) to step 29) to complete the verification of the gas content in the conductive measured medium solution at all gas injection points under all frequency points;

31) Carry out the accuracy calculation of the gas-liquid mixture weight bubble content of the gas-liquid hybrid vortex flowmeter in sequence from front to back, and complete the detection of bubble content.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims (10)

1. A gas-liquid mixed flow vortex flowmeter calibration detection device system, characterized in that it includes: Calibration solution output unit, used to output the calibration solution; The gas injection unit is used to inject gas to the output calibration solution; The calibration pipeline is used to make the output calibration solution sequentially pass through the gas-liquid mixed flow vortex flowmeter to be calibrated; A flow control unit for controlling gas flow and calibration solution flow; Standard metering barrel, used for standard metering of gas-liquid mixed flow vortex flowmeter for production calibration and testing; The calibration detection unit is used for calculating the calibration output coefficient and calculating the accuracy of the gas volume flow rate. 2. The gas-liquid mixed flow type vortex flowmeter calibration detection device system according to claim 1, characterized in that: it also includes a flow totalizer, which is used to control the output of a stable and constant gas flow to the calibration solution, said The calibration solution is the conductivity measured medium solution; Calculate the accuracy of gas volume flow by the following formula: FS%=fabs(V _a -V _a1 )/V _a ×100% Among them, FS is the accuracy of the gas volume flow rate, V _a1 is the total volume of the calibration medium solution output by the gas-liquid mixed flow vortex flowmeter, and V _a is the total volume of the calibration medium solution measured by the calibration metering barrel. 3. The gas-liquid mixed flow vortex flowmeter calibration detection device system according to claim 2, characterized in that: the calibration output coefficient is calculated by the following formula: K _p =K _p1 V _a /V _a1 Among them, K _p is the calibration output coefficient, and K _p1 is the preset coefficient before calibration of the gas-liquid hybrid vortex flowmeter. 4. The gas-liquid mixed flow vortex flowmeter calibration detection device system according to claim 3, characterized in that: The flow control unit controls the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated. The calibration detection unit delays recording the signal frequency output by the gas-liquid hybrid vortex flowmeter, and divides the signal frequency in turn. Intercept the value of the segment, and use it as the calibration point of the flow rate; The flow control unit adjusts and controls the flow of the calibration medium solution in the calibration pipeline to meet the frequency value of the calibration point; The calibration detection unit resets the total amount of metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharges the calibration solution; The flow control unit controls the calibration solution to refill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, and the calibration detection unit records the total volume indication of the gas-liquid hybrid vortex flowmeter to be calibrated and the indication of the standard metering barrel. Repeat the above steps until the records of all calibration points are completed, and the calibration output coefficients are calculated according to the records. 5. The gas-liquid mixed flow vortex flowmeter calibration detection device system according to claim 4, characterized in that: The flow control unit controls the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated. The calibration detection unit delays recording the signal frequency output by the gas-liquid hybrid vortex flowmeter, and divides the signal frequency in turn. Segment value interception, respectively as the verification point of the flow; The flow control unit adjusts the flow rate of the conductive measured medium solution to meet the frequency value of the verification point; The calibration detection unit clears the total amount of metering output of the gas-liquid hybrid vortex flowmeter, and discharges the flow rate of the conductive measured medium solution; The flow control unit controls the calibration solution to refill the calibration pipe and the gas-liquid hybrid vortex flowmeter to be calibrated. The calibration detection unit records the total volume indications of all gas-liquid hybrid vortex flowmeters and the indications of the standard metering barrel, and calculates The accuracy of the gas volume flow rate, complete the calibration test; Repeat the above steps until the calibration detection of all test points is completed; The calibration detection unit sequentially intercepts the segmented value according to the same signal frequency as the verification point, and uses it as the gas content detection flow point under the constant flow of the conductive measured medium solution; The calibration detection unit selects gas injection volume points with different values, and injects them into the conductive measured medium solution respectively; The flow control unit adjusts the flow rate of the conductive measured medium solution to meet the frequency value of the verification point, the flow control unit controls the output of the gas injection volume with the same value as the selected gas injection volume point, the calibration detection unit delays recording the current gas injection volume value, and Bubble content in the conductive measured medium solution output by each gas-liquid hybrid vortex flowmeter; Repeat the above steps until the verification of the gas content in the conductive measured medium solution at all gas injection points is completed, and the verification of the gas content in the conductive measured medium solution at all gas injection points under all frequency points is completed, and the bubble content detection is completed. 6. A gas-liquid mixed flow vortex flowmeter calibration detection control method, characterized in that it includes: Draw the calibration solution and output it; Inject gas into the output calibration solution, and make the output calibration solution pass through the gas-liquid mixed flow vortex flowmeter to be calibrated sequentially; Control gas flow and calibration solution flow; According to the gas flow rate and calibration solution flow rate and the reading of the standard metering barrel, calculate the calibration output coefficient and the accuracy of the gas volume flow rate calculation, and complete the calibration and measurement of the gas-liquid mixed flow vortex flowmeter to be calibrated. 7. The gas-liquid mixed flow vortex flowmeter calibration detection control method according to claim 6, characterized in that: control the output of a stable and constant gas flow to the calibration solution, the calibration solution is a conductive measured medium solution ; Calculate the accuracy of gas volume flow by the following formula: FS%=fabs(V _a -V _a1 )/V _a ×100% Among them, FS is the accuracy of the gas volume flow, V _a1 is the output gas volume flow, and Va is the gas volume flow controlled by the flow totalizer. 8. The gas-liquid mixed flow vortex flowmeter calibration detection control method according to claim 7, characterized in that: the calibration output coefficient is calculated by the following formula: K _p =K _p1 V _a /V _a1 Among them, K _p is the calibration output coefficient, and K _p1 is the coefficient preset by the converter before calibration of the gas-liquid hybrid vortex flowmeter. 9. The gas-liquid mixed flow vortex flowmeter calibration detection control method according to claim 8, characterized in that: Control the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, record the signal frequency output by the gas-liquid hybrid vortex flowmeter in a delayed manner, and intercept the signal frequency in sequence, respectively as Calibration point of flow; Adjust the flow rate of the calibration solution through the flow control unit to meet the frequency value of the calibration point; Clear the total metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharge the calibration solution; Control the calibration solution to refill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, and record the total gas volume indication output by the gas-liquid hybrid vortex flowmeter to be calibrated and the indication of the standard metering barrel; Repeat the above steps until the calibration of all calibration points is completed. 10. The gas-liquid mixed flow vortex flowmeter calibration detection control method according to claim 9, characterized in that: Control the calibration solution to fill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, record the signal frequency output by the gas-liquid hybrid vortex flowmeter in a delayed manner, and intercept the signal frequency in sequence, respectively as Check point of flow; Adjust the flow rate of the calibration solution through the flow control unit to meet the frequency value of the verification point; Clear the total metering output of the gas-liquid hybrid vortex flowmeter to zero, and discharge the calibration solution; Control the calibration solution to refill the calibration pipeline and the gas-liquid hybrid vortex flowmeter to be calibrated, record the total volume indications of all gas-liquid hybrid vortex flowmeters and the indications of the standard metering barrel; Repeat the above steps until the calibration detection of all detection points is completed; According to the same signal frequency as the verification point, segmental value interception is sequentially carried out, and it is used as the gas content detection flow point under the constant flow of the conductive measured medium solution; Select gas injection volume points with different values, and inject them into the conductive measured medium solution respectively; Adjust the flow rate of the conductive measured medium solution through the flow control unit to meet the frequency value of the verification point, control the output of the gas injection volume that is the same as the selected gas injection volume point, and record the current gas injection volume value with a delay, and each gas-liquid mixed type The bubble content in the conductive measured medium solution output by the vortex flowmeter; Repeat the above steps until the verification of the gas content in the conductive measured medium solution at all gas injection points is completed, and the verification of the gas content in the conductive measured medium solution at all gas injection points under all frequency points is completed, and the bubble content detection is completed.