CN116754054B - Calibrating method and system for oil detection flowmeter - Google Patents
Calibrating method and system for oil detection flowmeter Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
Abstract
The application provides a method and a system for calibrating an oil detection flowmeter, which relate to the technical field of flowmeter calibration and comprise the following steps: acquiring environmental data of the oil detection flowmeter to generate standard fluid required by calibration; adjusting the calibration device to output an environment configuration completion signal; controlling the flow of the detection fluid, recording the flow rate to be calibrated and the standard flow rate, and performing secondary calibration when the flow rate to be calibrated exceeds a set normal range; calculating to obtain a flow velocity calibration coefficient; adjusting the oil detection flowmeter according to the flow rate calibration coefficient; comparing the flow rate determination coefficient range with the flow rate calibration coefficient, and judging whether the calibration process is repeated; the method and the system are used for solving the problem that the calibration result is not accurate enough due to the lack of the requirement on the calibration environment in the existing calibration method and system of the oil detection flowmeter.
Description
Technical Field
The application relates to the technical field of flowmeter calibration, in particular to a method and a system for calibrating an oil detection flowmeter.
Background
An oil detection flow meter is a device for measuring the flow of a liquid oil medium. They are important tools widely used in the industrial and scientific fields for monitoring, controlling and optimizing the transport and handling of oil fluids; the method has wide application in industries such as petroleum, chemical industry, energy, water treatment and the like, and is used for ensuring accurate measurement of fluid flow and effective control of flow.
In the prior art, the calibration is usually directly carried out, and the limitation on the calibration conditions is lacking, for example, in the Chinese patent with the application publication number of CN114608682A, a method for calibrating a flowmeter is disclosed, and the scheme is that signals are directly obtained under the condition that the requirements on the calibration environment are not met; in the calibration process, if environmental factors change, errors of the flow meter still exist after calibration, so that the existing calibration method and system of the oil detection flow meter need to be optimized.
Disclosure of Invention
Aiming at the defects existing in the prior art, the application provides a method and a system for calibrating an oil detection flowmeter, which are used for generating standard fluid by acquiring environmental data; the adjusting and calibrating device records flow velocity data, calculates a flow velocity calibration coefficient and adjusts the oil detecting flowmeter; comparing the flow rate determination coefficient range with the flow rate calibration coefficient, and judging whether the calibration process is repeated; the method and the system solve the problem that the calibration result is not accurate enough due to the lack of requirements on the calibration environment in the existing calibration method and system of the oil detection flowmeter.
In order to achieve the above object, the present application is realized by the following technical scheme: in a first aspect, the present application provides a method of calibrating an oil detection flow meter, comprising the steps of:
step S1, acquiring environment data of the operation of an oil detection flowmeter, and generating standard fluid required by calibration based on the environment data of the operation of the oil detection flowmeter;
s2, adjusting the calibrating device to enable the flow velocity difference values of the standard flow meters at different positions in the pipeline to be in a set flow velocity neglect range, and outputting an environment configuration completion signal;
step S3, when an environment configuration completion signal is received, placing the oil detection flowmeter at a flowmeter insertion position, controlling the flow of detection fluid, recording the flow rate to be calibrated and the standard flow rate, and performing secondary calibration when the flow rate to be calibrated exceeds a set normal range;
s4, screening the flow velocity to be calibrated to obtain a comparison calibration flow velocity, calculating a flow velocity calibration coefficient by comparing the calibration flow velocity with a standard flow velocity, and adjusting the oil detection flowmeter according to the flow velocity calibration coefficient;
and S5, setting a flow rate determination coefficient range, comparing the flow rate determination coefficient range with a flow rate calibration coefficient, and judging whether to repeat the steps S3 to S5.
Further, the step S1 includes the following sub-steps:
step S1011, acquiring environmental data of the operation of the oil detection flowmeter, wherein the environmental data comprises a hydraulic pressure range and a temperature range, the hydraulic pressure range of the operation of the oil detection flowmeter is set as a first hydraulic pressure range, and the temperature range of the operation of the oil detection flowmeter is set as a first temperature range; acquiring the type of the fluid detected by the oil detection flowmeter, and marking the type of the fluid as detection fluid;
step S1012, constructing a calibration device, wherein the calibration device comprises an input container with a valve at the bottom, a pipeline, a receiving container, a booster pump and a heating element; three standard flow meters positioned at the top, the middle and the bottom of the pipeline are arranged in the pipeline, and the pipeline is also provided with reserved flow meter insertion positions; the top of the input container is provided with a booster pump, and the periphery of the input container is provided with heating elements; the input container is vertically connected with the receiving container through a pipe.
Further, the step S1 further includes the following sub-steps:
step S1021, placing a first unit volume of detection fluid in an input container, controlling the temperature of the detection fluid to be within a first temperature range by using a heating element, and controlling the hydraulic pressure of the detection fluid to be within a first hydraulic pressure range by using a booster pump;
step S1022, obtaining the flow rate of the detected fluid in unit time, and setting the minimum value and the maximum value of the flow rate of the detected fluid in unit time as a left section and a right section of the first flow rate range respectively; the detected fluid having a temperature in the first temperature range, a hydraulic pressure in the first hydraulic pressure range, and a flow rate in the first flow rate range is recorded as a standard fluid.
Further, the step S2 includes the following sub-steps:
step S201, placing a second unit volume of detection fluid in the input container, controlling the heating element to heat so that the temperature of the detection fluid is within a first temperature range, and opening the valve to control the flow of the detection fluid;
step S202, obtaining flow velocity data of standard flow meters at the top, the middle and the bottom of the pipeline in unit time, marking the flow velocity data at the top of the pipeline as a first flow velocity, marking the flow velocity data at the middle of the pipeline as a second flow velocity, and marking the flow velocity data at the bottom of the pipeline as a third flow velocity;
step S203, calculating a flow rate difference value, wherein the flow rate difference value comprises a first flow rate difference value, a second flow rate difference value and a third flow rate difference value; the first flow rate difference value is the absolute value of the difference value between the first flow rate and the second flow rate, the second flow rate difference value is the absolute value of the difference value between the second flow rate and the third flow rate, and the third flow rate difference value is the absolute value of the difference value between the first flow rate and the third flow rate;
step S204, setting a flow rate neglecting range, wherein the flow rate neglecting range comprises a first flow rate neglecting range and a second flow rate neglecting range; the booster pump is controlled to pressurize the input container until the first flow rate difference value and the second flow rate difference value are within a first neglected range and the third flow rate difference value is within a second neglected range, and an environment configuration completion signal is output.
Further, the step S3 includes the following sub-steps:
step S3011, receiving an environment configuration completion signal, cleaning the oil detection flowmeter and the calibration device when the environment configuration completion signal is received, and placing the oil detection flowmeter into a flowmeter insertion position;
step S3012, placing a second unit volume of the detection fluid in the input container, and controlling the heating element to heat, so that the temperature of the detection fluid is within the first temperature range; controlling the booster pump to pressurize so that the hydraulic pressure of the detection fluid is within a first hydraulic pressure range;
step S3013, a valve is opened to control standard fluid flow, and flow velocity data of an oil detection flowmeter and a standard flowmeter positioned in the middle of a pipeline in unit time are recorded; and marking the flow rate data of the oil detection flowmeter in unit time as a flow rate to be calibrated, and marking the flow rate data of the standard flowmeter positioned in the middle of the pipeline in unit time as a standard flow rate.
Further, the step S3 further includes the following sub-steps:
step S3021, stopping the calibration operation when the flow rate to be calibrated exceeds the set normal range, and cleaning the oil detection flowmeter and the calibration device again to perform secondary calibration;
in step S3022, when the flow rate to be calibrated still exceeds the set normal range during the secondary calibration process, it is determined that the oil detection flow meter is faulty, a flow meter fault signal is output, and calibration is stopped.
Further, the step S4 includes the following sub-steps:
step S4011, a flow rate database is established, wherein the flow rate database is used for recording flow rates to be calibrated and standard flow rates;
step S4012, sorting the flow rates to be calibrated in order from small to large, deleting the two flow rates to be calibrated at the forefront and the last of the sorting, and marking the remaining flow rates to be calibrated as comparison calibration flow rates.
Further, the step S4 further includes the following sub-steps:
step S4021, calculating the average flow rate of all the comparison calibration flow rates, and marking the average flow rate as a calibration average; calculating the average flow rate of all standard flow rates, and marking the average flow rate as a standard average;
step S4022, obtaining a flow rate calibration coefficient by using a flow rate calibration algorithm, and adjusting the oil detection flowmeter according to the flow rate calibration coefficient;
the flow rate calibration algorithm is configured to: l=v label/V oil; where L is the flow rate calibration coefficient, V is the standard average, and V is the calibrated average.
Further, the step S5 includes the following sub-steps:
step S501, setting a flow rate determination coefficient range;
step S502, comparing the flow velocity determination coefficient range with the flow velocity calibration coefficient, ending the calibration step when the flow velocity calibration coefficient belongs to the flow velocity determination coefficient range, and outputting a calibration completion signal; when the flow rate calibration coefficient exceeds the flow rate determination coefficient range, steps S3 to S5 are repeated.
In a second aspect, the present application provides a system for a method of calibrating an oil detection flow meter, comprising a pre-processing module, a monitoring module, and a calibration module; the pretreatment module comprises a cleaning unit, a fluid generating unit and a difference value calibration unit;
the cleaning unit is used for cleaning the oil detection flowmeter and the calibration device; the fluid generating unit is used for generating standard fluid; the difference value calibration unit is used for controlling the flow speed difference value in the pipeline to be in a set flow speed neglect range;
the monitoring module comprises a data acquisition unit, a fault processing unit and a flow rate calibration unit; the data acquisition unit is used for acquiring the flow rate to be calibrated and the standard flow rate; the data acquisition unit further comprises a flow rate database, wherein the flow rate database is used for recording the flow rate to be calibrated and the standard flow rate; the fault processing unit is used for judging whether the flow rate to be calibrated exceeds a set normal range, and performing secondary calibration processing when the flow rate to be calibrated exceeds the set normal range; the flow velocity calibration unit is used for screening the flow velocity to be calibrated to obtain a comparison calibration flow velocity;
the calibration module comprises a coefficient calculation unit and a recalibration judgment unit; the coefficient calculation unit is used for analyzing and calculating the comparison calibration flow rate and the standard flow rate to obtain a flow rate calibration coefficient, and adjusting the oil detection flowmeter according to the flow rate calibration coefficient; the recalibration judging unit is used for comparing the flow velocity calibration coefficient and the flow velocity determination coefficient range and judging whether to carry out calibration again.
In a third aspect, the application provides an electronic device comprising a processor and a memory storing computer readable instructions which, when executed by the processor, perform the steps of the method as described above.
In a fourth aspect, the application provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method as described above.
The application has the beneficial effects that: the method and the system have the advantages that the calibration environment is configured in advance, so that a system less influenced by external factors in the calibration process is obtained; errors caused by external changes in the calibration process can be prevented, and the accuracy of the calibration is improved;
according to the oil detection flowmeter calibration method, the flow rate to be calibrated in the calibration process is recorded, secondary calibration processing is carried out when the flow rate to be calibrated exceeds a set normal range, and the oil detection flowmeter is judged to be faulty when the flow rate to be calibrated still exceeds the set normal range in the secondary calibration processing, so that the calibration step is stopped; the fault can be found in advance, the resources required by calibration are reduced, and the calibration efficiency of the calibration method and the calibration system is improved;
according to the application, the flow rate calibration coefficient is obtained by analyzing and calculating the calibration flow rate and the standard flow rate; judging whether the calibration step is needed to be repeated or not by comparing the flow velocity calibration coefficient with the flow velocity determination coefficient range; the accuracy of the calibration can be further improved.
Additional aspects of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of the steps of a method of calibrating an oil detection flowmeter according to the present application;
FIG. 2 is a schematic diagram of a calibration device of the present application;
fig. 3 is a schematic block diagram of a calibration system for an oil detection flow meter of the present application.
Detailed Description
The application is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the application easy to understand.
Example 1
Referring to fig. 1 and 2, in a first aspect, the present application provides a method for calibrating an oil detection flowmeter, the method for calibrating an oil detection flowmeter comprising: acquiring environmental data of the operation of the oil detection flowmeter, and generating standard fluid based on the environmental data; adjusting the calibration device to enable the flow speed difference value in the device to be in a flow speed neglect range; starting calibration, recording the flow rate to be calibrated and the standard flow rate, and judging whether the flow rate to be calibrated exceeds a set normal range; judging whether the flow rate to be calibrated exceeds a set normal range or not, if so, outputting a flowmeter fault signal, otherwise, entering a step S2; when the flow rate to be calibrated does not exceed the set normal range, the flow rate calibration coefficient is obtained through calculation by comparing the calibrated flow rate with the standard flow rate, and the oil detection flowmeter is adjusted; comparing the flow rate calibration coefficient with the flow rate determination coefficient range, and judging whether to perform calibration again.
Specifically, step S1, acquiring environmental data of the operation of an oil detection flowmeter, and generating standard fluid required for calibration based on the environmental data of the operation of the oil detection flowmeter; step S1 further comprises the following sub-steps:
step S1011, acquiring environmental data of the operation of the oil detection flowmeter, wherein the environmental data comprises a hydraulic pressure range and a temperature range, setting the hydraulic pressure range of the operation of the oil detection flowmeter as a first hydraulic pressure range, and setting the temperature range of the operation of the oil detection flowmeter as a first temperature range; acquiring the type of the fluid detected by the oil detection flowmeter, and marking the type of the fluid as detection fluid;
in particular, the first hydraulic pressure range, the first flow rate range and the first temperature range are different according to the type of fluid detected by the oil detecting flowmeter, for example, when the type of fluid is water-soluble cutting oil, the first hydraulic pressure range is 3-5bar, the first flow rate range is 80-100 ml/s, and the first temperature range is 24-26 bar o C；
Step S1012, constructing a calibration device, wherein the calibration device comprises an input container, a pipeline, a receiving container, a booster pump and a heating element, wherein the bottom of the input container is provided with a valve; three standard flow meters positioned at the top, the middle and the bottom of the pipeline are arranged in the pipeline, and the pipeline is also provided with reserved flow meter insertion positions; the top of the input container is provided with a booster pump, and the periphery of the input container is provided with heating elements; vertically connecting the input container with the receiving container through a pipeline;
in the concrete implementation, the reserved flowmeter insertion position is arranged near the standard flowmeter close to the middle of the pipeline, so that the calibration result is more accurate; the heating units are arranged around the input container, so that the detection fluid can be heated uniformly;
step S1021, placing a first unit volume of detection fluid in an input container, controlling the temperature of the detection fluid to be within a first temperature range by using a heating element, and controlling the hydraulic pressure of the detection fluid to be within a first hydraulic pressure range by using a booster pump;
step S1022, obtaining the flow rate of the detected fluid in unit time, and setting the minimum value and the maximum value of the flow rate of the detected fluid in unit time as a left section and a right section of the first flow rate range respectively; recording a detection fluid with the temperature in a first temperature range, the hydraulic pressure in a first hydraulic pressure range and the flow rate in a first flow rate range as a standard fluid;
in specific application, the first unit volume is set to 50L, and the final generation of 50L is that the hydraulic pressure is 4bar and 25 o A standard fluid having a flow rate in the range of 80 to 100ml/s at C;
s2, adjusting the calibrating device to enable the flow velocity difference values of the standard flow meters at different positions in the pipeline to be in a set flow velocity neglect range, and outputting an environment configuration completion signal; step S2 further comprises the following sub-steps:
step S201, placing a second unit volume of detection fluid in the input container, controlling the heating element to heat so that the temperature of the detection fluid is within a first temperature range, and opening the valve to control the flow of the detection fluid;
in specific implementation, the second unit volume is set to be 5L, and enough flow rates to be calibrated and standard flow rates can be recorded;
step S202, obtaining flow velocity data of standard flow meters at the top, the middle and the bottom of the pipeline in unit time, marking the flow velocity data at the top of the pipeline as a first flow velocity, marking the flow velocity data at the middle of the pipeline as a second flow velocity, and marking the flow velocity data at the bottom of the pipeline as a third flow velocity;
step S203, calculating a flow rate difference value, wherein the flow rate difference value comprises a first flow rate difference value, a second flow rate difference value and a third flow rate difference value; the first flow rate difference value is the absolute value of the difference value between the first flow rate and the second flow rate, the second flow rate difference value is the absolute value of the difference value between the second flow rate and the third flow rate, and the third flow rate difference value is the absolute value of the difference value between the first flow rate and the third flow rate;
step S204, setting a flow rate neglecting range, wherein the flow rate neglecting range comprises a first flow rate neglecting range and a second flow rate neglecting range; controlling a booster pump to pressurize the input container until the first flow rate difference value and the second flow rate difference value are within a first neglected range and the third flow rate difference value is within a second neglected range, and outputting an environment configuration completion signal;
in practice, the flow rates at different points are different due to friction of the pipeline, pressure loss of the long-distance pipeline and viscosity of the liquid, so that the first neglected range is set to be 5ml/s, and the second neglected range is set to be 10ml/s;
step S3, when an environment configuration completion signal is received, placing the oil detection flowmeter at a flowmeter insertion position, controlling the flow of detection fluid, recording the flow rate to be calibrated and the standard flow rate, and performing secondary calibration when the flow rate to be calibrated exceeds a set normal range; step S3 further comprises the following sub-steps:
step S3011, receiving an environment configuration completion signal, cleaning the oil detection flowmeter and the calibration device when the environment configuration completion signal is received, and placing the oil detection flowmeter into a flowmeter insertion position;
when the oil detection flowmeter is inserted, the flowmeter can still keep a sealing state, so that the calibration device can be reduced as much as possible, and is influenced by external factors;
step S3012, placing a second unit volume of the detection fluid in the input container, and controlling the heating element to heat, so that the temperature of the detection fluid is within the first temperature range; controlling the booster pump to pressurize so that the hydraulic pressure of the detection fluid is within a first hydraulic pressure range;
step S3013, a valve is opened to control standard fluid flow, and flow velocity data of an oil detection flowmeter and a standard flowmeter positioned in the middle of a pipeline in unit time are recorded; marking the flow rate data of the oil detection flowmeter in unit time as a flow rate to be calibrated, and marking the flow rate data of the standard flowmeter positioned in the middle of the pipeline in unit time as a standard flow rate;
in a specific application, selecting a standard flowmeter positioned in the middle of the pipeline closest to the flowmeter insertion position to reduce the influence caused by factors in the pipeline;
step S3021, stopping the calibration operation when the flow rate to be calibrated exceeds the set normal range, and cleaning the oil detection flowmeter and the calibration device again to perform secondary calibration;
in the implementation, the set normal range is 70-110 ml/s, and when the flow rate to be calibrated exceeds the set normal range, the calibration operation is stopped, and the secondary calibration treatment is carried out;
step S3022, when the flow rate to be calibrated still exceeds the set normal range during the secondary calibration process, determining that the oil detection flowmeter has a fault, outputting a flowmeter fault signal, and stopping the calibration;
s4, screening the flow velocity to be calibrated to obtain a comparison calibration flow velocity, calculating a flow velocity calibration coefficient by comparing the calibration flow velocity with a standard flow velocity, and adjusting the oil detection flowmeter according to the flow velocity calibration coefficient;
step S4011, a flow rate database is established, and the flow rate database is used for recording flow rates to be calibrated and standard flow rates;
step S4012, sorting the flow rates to be calibrated according to the order from small to large, deleting the flow rates to be calibrated at the forefront and the last of the sorting, and marking the rest flow rates to be calibrated as comparison calibration flow rates;
in the specific implementation, in order to make the calibration result more accurate, deleting two maximum values in the flow rate to be calibrated so as to reduce the influence caused by the system error;
step S4021, calculating the average flow rate of all the comparison calibration flow rates, and marking the average flow rate as a calibration average; calculating the average flow rate of all standard flow rates, and marking the average flow rate as a standard average;
step S4022, obtaining a flow rate calibration coefficient by using a flow rate calibration algorithm, and adjusting the oil detection flowmeter according to the flow rate calibration coefficient;
the flow rate calibration algorithm is configured to: l=v label/V oil; wherein L is a flow rate calibration coefficient, V is a standard average, and V is a calibration average;
in specific application, the V standard is set to 90ml/s, the V oil is set to 100ml/s, the calculated L is 0.9, and the flow rate calibration coefficient of the oil detection flowmeter is set to 0.9; means that the flow rate detected by the oil detection flowmeter is multiplied by 0.9;
step S5, setting a flow rate determination coefficient range, comparing the flow rate determination coefficient range with a flow rate calibration coefficient, and judging whether to repeatedly perform the steps S3 to S5; step S5 further comprises the sub-steps of:
step S501, setting a flow rate determination coefficient range;
step S502, comparing the flow velocity determination coefficient range with the flow velocity calibration coefficient, ending the calibration step when the flow velocity calibration coefficient belongs to the flow velocity determination coefficient range, and outputting a calibration completion signal; repeating steps S3 to S5 when the flow rate calibration coefficient exceeds the flow rate determination coefficient range;
in specific implementation, setting the range of the flow rate determination coefficient to be 0.95-1.05, and judging that the calibration is completed when the flow rate calibration coefficient is more than or equal to 0.95 and less than or equal to 1.05; otherwise, the calibration process is repeated.
Example two
Referring to fig. 3, in a second aspect, the present application provides a calibration system for an oil detection flowmeter, including a preprocessing module, a monitoring module, and a calibration module; the pretreatment module comprises a cleaning unit, a fluid generating unit and a difference value calibration unit;
the cleaning unit is used for cleaning the oil detection flowmeter and the calibration device; the fluid generating unit is used for generating standard fluid; the difference value calibration unit is used for controlling the flow speed difference value in the pipeline to be in a set flow speed neglect range;
the monitoring module comprises a data acquisition unit, a fault processing unit and a flow rate calibration unit; the data acquisition unit is used for acquiring the flow rate to be calibrated and the standard flow rate; the data acquisition unit also comprises a flow rate database, wherein the flow rate database is used for recording the flow rate to be calibrated and the standard flow rate; the fault processing unit is used for judging whether the flow rate to be calibrated exceeds a set normal range, and performing secondary calibration processing when the flow rate to be calibrated exceeds the set normal range; the flow rate calibration unit is used for screening the flow rate to be calibrated to obtain a comparison calibration flow rate;
the calibration module comprises a coefficient calculation unit and a recalibration judgment unit; the coefficient calculation unit is used for analyzing and calculating the comparison calibration flow rate and the standard flow rate to obtain a flow rate calibration coefficient, and adjusting the oil detection flowmeter according to the flow rate calibration coefficient; the recalibration judging unit is used for comparing the flow velocity calibration coefficient and the flow velocity determination coefficient range and judging whether to carry out calibration again.
Example III
In a third aspect, the application provides an electronic device comprising a processor and a memory storing computer readable instructions which, when executed by the processor, perform the steps of any of the methods described above. Through the above technical solutions, the processor and the memory are interconnected and communicate with each other through a communication bus and/or other form of connection mechanism (not shown), the memory stores a computer program executable by the processor, which when executed by the electronic device, performs the method in any of the alternative implementations of the above embodiments to realize the following functions: acquiring the working environment of an oil detection flowmeter, and acquiring a first flow rate range of detection fluid in a first temperature range and a first hydraulic pressure range; adjusting the calibration device to enable the flow velocity difference values of the standard flow meters at different positions in the pipeline to be in a set flow velocity neglect range; heating the detection fluid to a first temperature range, pressurizing the detection fluid to a first hydraulic pressure range, and then starting calibration; judging whether the flow rate to be calibrated exceeds a set normal range, and performing secondary calibration when the flow rate to be calibrated exceeds the set normal range; when the flow rate to be calibrated still exceeds the set normal range during the secondary calibration process, outputting a flowmeter fault signal, and stopping the calibration; the flow rate calibration coefficient is obtained through calculation by comparing the calibration flow rate with the standard flow rate, and the oil detection flowmeter is calibrated according to the flow rate calibration coefficient; finally, determining whether to perform calibration again by comparing the flow rate calibration coefficient with the flow rate determination coefficient range.
Example IV
In a fourth aspect, the present application provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of any of the methods described above. By the above technical solution, the computer program, when executed by the processor, performs the method in any of the alternative implementations of the above embodiments to implement the following functions: acquiring the working environment of an oil detection flowmeter, and acquiring a first flow rate range of detection fluid in a first temperature range and a first hydraulic pressure range; adjusting the calibration device to enable the flow velocity difference values of the standard flow meters at different positions in the pipeline to be in a set flow velocity neglect range; heating the detection fluid to a first temperature range, pressurizing the detection fluid to a first hydraulic pressure range, and then starting calibration; judging whether the flow rate to be calibrated exceeds a set normal range, and performing secondary calibration when the flow rate to be calibrated exceeds the set normal range; when the flow rate to be calibrated still exceeds the set normal range during the secondary calibration process, outputting a flowmeter fault signal, and stopping the calibration; the flow rate calibration coefficient is obtained through calculation by comparing the calibration flow rate with the standard flow rate, and the oil detection flowmeter is calibrated according to the flow rate calibration coefficient; finally, determining whether to perform calibration again by comparing the flow rate calibration coefficient with the flow rate determination coefficient range.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein. The storage medium may be implemented by any type or combination of volatile or nonvolatile Memory devices, such as static random access Memory (Static Random Access Memory, SRAM), electrically erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), erasable Programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), programmable Read-Only Memory (PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk. These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
The above examples are only specific embodiments of the present application, and are not intended to limit the scope of the present application, but it should be understood by those skilled in the art that the present application is not limited thereto, and that the present application is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method of calibrating an oil detection flowmeter, comprising the steps of:
step S1, acquiring environmental data of the oil detection flowmeter, and building a calibration device, wherein the calibration device comprises an input container, a pipeline, a receiving container, a booster pump and a heating element, wherein the bottom of the input container is provided with a valve; three standard flow meters positioned at the top, the middle and the bottom of the pipeline are arranged in the pipeline, and the pipeline is also provided with reserved flow meter insertion positions; the top of the input container is provided with a booster pump, and the periphery of the input container is provided with heating elements; vertically connecting the input container with the receiving container through a pipeline; generating a standard fluid required for calibration based on environmental data of the operation of the oil detection flow meter;
s2, adjusting the calibrating device to enable the flow velocity difference values of the standard flow meters at different positions in the pipeline to be in a set flow velocity neglect range, and outputting an environment configuration completion signal;
step S3, when an environment configuration completion signal is received, placing the oil detection flowmeter at a flowmeter insertion position, controlling the flow of detection fluid, recording the flow rate to be calibrated and the standard flow rate, and performing secondary calibration when the flow rate to be calibrated exceeds a set normal range;
s4, screening the flow velocity to be calibrated to obtain a comparison calibration flow velocity, calculating a flow velocity calibration coefficient by comparing the calibration flow velocity with a standard flow velocity, and adjusting the oil detection flowmeter according to the flow velocity calibration coefficient;
step S5, setting a flow rate determination coefficient range, comparing the flow rate determination coefficient range with a flow rate calibration coefficient, and judging whether to repeatedly perform the steps S3 to S5;
the step S4 includes the following sub-steps:
step S4011, a flow rate database is established, wherein the flow rate database is used for recording flow rates to be calibrated and standard flow rates;
step S4012, sorting the flow rates to be calibrated according to the order from small to large, deleting the flow rates to be calibrated at the forefront and the last of the sorting, and marking the rest flow rates to be calibrated as comparison calibration flow rates;
the step S4 further includes the following sub-steps:
step S4021, calculating the average flow rate of all the comparison calibration flow rates, and marking the average flow rate as a calibration average; calculating the average flow rate of all standard flow rates, and marking the average flow rate as a standard average;
step S4022, obtaining a flow rate calibration coefficient by using a flow rate calibration algorithm, and adjusting the oil detection flowmeter according to the flow rate calibration coefficient;
the flow rate calibration algorithm is configured to: l=v label/V oil; where L is the flow rate calibration coefficient, V is the standard average, and V is the calibrated average.
2. The method of calibrating an oil detection flowmeter of claim 1, wherein said step S1 comprises the sub-steps of:
step S1011, acquiring environmental data of the operation of the oil detection flowmeter, wherein the environmental data comprises a hydraulic pressure range and a temperature range, the hydraulic pressure range of the operation of the oil detection flowmeter is set as a first hydraulic pressure range, and the temperature range of the operation of the oil detection flowmeter is set as a first temperature range; and acquiring the type of the fluid detected by the oil detection flowmeter, and marking the type of the fluid as detection fluid.
3. The method of calibrating an oil detection flowmeter of claim 2, wherein said step S1 further comprises the sub-steps of:
step S1021, placing a first unit volume of detection fluid in an input container, controlling the temperature of the detection fluid to be within a first temperature range by using a heating element, and controlling the hydraulic pressure of the detection fluid to be within a first hydraulic pressure range by using a booster pump;
step S1022, obtaining the flow rate of the detected fluid in unit time, and setting the minimum value and the maximum value of the flow rate of the detected fluid in unit time as a left section and a right section of the first flow rate range respectively; the detected fluid having a temperature in the first temperature range, a hydraulic pressure in the first hydraulic pressure range, and a flow rate in the first flow rate range is recorded as a standard fluid.
4. A method of calibrating an oil detection flowmeter according to claim 3, wherein said step S2 comprises the sub-steps of:
step S201, placing a second unit volume of detection fluid in the input container, controlling the heating element to heat so that the temperature of the detection fluid is within a first temperature range, and opening the valve to control the flow of the detection fluid;
step S202, obtaining flow velocity data of standard flow meters at the top, the middle and the bottom of the pipeline in unit time, marking the flow velocity data at the top of the pipeline as a first flow velocity, marking the flow velocity data at the middle of the pipeline as a second flow velocity, and marking the flow velocity data at the bottom of the pipeline as a third flow velocity;
step S203, calculating a flow rate difference value, wherein the flow rate difference value comprises a first flow rate difference value, a second flow rate difference value and a third flow rate difference value; the first flow rate difference value is the absolute value of the difference value between the first flow rate and the second flow rate, the second flow rate difference value is the absolute value of the difference value between the second flow rate and the third flow rate, and the third flow rate difference value is the absolute value of the difference value between the first flow rate and the third flow rate;
step S204, setting a flow rate neglecting range, wherein the flow rate neglecting range comprises a first flow rate neglecting range and a second flow rate neglecting range; the booster pump is controlled to pressurize the input container until the first flow rate difference value and the second flow rate difference value are within a first neglected range and the third flow rate difference value is within a second neglected range, and an environment configuration completion signal is output.
5. The method of calibrating an oil detection flowmeter of claim 4, wherein said step S3 comprises the sub-steps of:
step S3011, receiving an environment configuration completion signal, cleaning the oil detection flowmeter and the calibration device when the environment configuration completion signal is received, and placing the oil detection flowmeter into a flowmeter insertion position;
step S3012, placing a second unit volume of the detection fluid in the input container, and controlling the heating element to heat, so that the temperature of the detection fluid is within the first temperature range; controlling the booster pump to pressurize so that the hydraulic pressure of the detection fluid is within a first hydraulic pressure range;
step S3013, a valve is opened to control standard fluid flow, and flow velocity data of an oil detection flowmeter and a standard flowmeter positioned in the middle of a pipeline in unit time are recorded; and marking the flow rate data of the oil detection flowmeter in unit time as a flow rate to be calibrated, and marking the flow rate data of the standard flowmeter positioned in the middle of the pipeline in unit time as a standard flow rate.
6. The method of calibrating an oil detection flowmeter of claim 5, wherein said step S3 further comprises the sub-steps of:
step S3021, stopping the calibration operation when the flow rate to be calibrated exceeds the set normal range, and cleaning the oil detection flowmeter and the calibration device again to perform secondary calibration;
in step S3022, when the flow rate to be calibrated still exceeds the set normal range during the secondary calibration process, it is determined that the oil detection flow meter is malfunctioning, a flow meter malfunction signal is output, and the calibration is stopped.
7. The method of calibrating an oil detection flowmeter of claim 6, wherein said step S5 comprises the sub-steps of:
step S501, setting a flow rate determination coefficient range;
step S502, comparing the flow velocity determination coefficient range with the flow velocity calibration coefficient, ending the calibration step when the flow velocity calibration coefficient belongs to the flow velocity determination coefficient range, and outputting a calibration completion signal; when the flow rate calibration coefficient exceeds the flow rate determination coefficient range, steps S3 to S5 are repeated.
8. A system adapted for use in a method of calibrating an oil detection flowmeter of any of claims 1-7, comprising a pre-processing module, a monitoring module, and a calibration module; the pretreatment module comprises a cleaning unit, a fluid generating unit and a difference value calibration unit;
the cleaning unit is used for cleaning the oil detection flowmeter and the calibration device; the fluid generating unit is used for generating standard fluid; the difference value calibration unit is used for controlling the flow speed difference value in the pipeline to be in a set flow speed neglect range;
the monitoring module comprises a data acquisition unit, a fault processing unit and a flow rate calibration unit; the data acquisition unit is used for acquiring the flow rate to be calibrated and the standard flow rate; the data acquisition unit further comprises a flow rate database, wherein the flow rate database is used for recording the flow rate to be calibrated and the standard flow rate; the fault processing unit is used for judging whether the flow rate to be calibrated exceeds a set normal range, and performing secondary calibration processing when the flow rate to be calibrated exceeds the set normal range; the flow velocity calibration unit is used for screening the flow velocity to be calibrated to obtain a comparison calibration flow velocity;
the calibration module comprises a coefficient calculation unit and a recalibration judgment unit; the coefficient calculation unit is used for analyzing and calculating the comparison calibration flow rate and the standard flow rate to obtain a flow rate calibration coefficient, and adjusting the oil detection flowmeter according to the flow rate calibration coefficient; the recalibration judging unit is used for comparing the flow velocity calibration coefficient and the flow velocity determination coefficient range and judging whether to carry out calibration again.
9. An electronic device comprising a processor and a memory storing computer readable instructions that, when executed by the processor, perform the steps of the method of any of claims 1-8.
10. A storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method according to any of claims 1-8.
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