A method, device and apparatus for measuring the flow rate of a high temperature, high pressure fluid

Abstract

The application discloses a kind of high temperature high pressure fluid injection flow measurement method, device and equipment, comprising: obtaining the liquid level height corresponding to high temperature high pressure fluid in liquid storage tank at injection start time and the liquid level height corresponding to at injection end time, and the differential pressure value of differential pressure flowmeter in stable stage being set on the pipeline of liquid storage tank;When the time interval from injection start time to injection end time is greater than set time, the differential pressure value of differential pressure flowmeter in stable stage is input into injection flow first calculation model, and the injection flow of high temperature high pressure fluid is obtained;When the time interval from injection start time to injection end time is not greater than set time, injection start time, injection start time corresponding liquid level height, injection end time and injection end time corresponding liquid level height are input into injection flow second calculation model, and the injection flow of high temperature high pressure fluid is obtained.The application can improve the injection flow measurement precision of high temperature high pressure fluid.

Description

Technical Field

[0001] This invention belongs to the field of high-temperature and high-pressure fluid flow and heat transfer, and relates to a method, apparatus and equipment for measuring the flow rate of high-temperature and high-pressure fluid jets. Background Technology

[0002] In the engineering field, high-temperature and high-pressure fluids have extremely wide applications, especially high-temperature and high-pressure steam, which exhibits unparalleled superior performance in flow heat transfer and mechanical power generation. The generation of high-temperature and high-pressure fluids requires significant energy consumption for heating; furthermore, due to their typically high flow rates and velocities, their flow rate is closely related to fluid heat transfer performance and mechanical propulsion efficiency in engineering applications. To ensure safe and stable operation, monitoring and measuring flow rate and velocity is of paramount importance. Therefore, accurate measurement of high-temperature and high-pressure fluid flow rates not only facilitates efficient resource utilization but also provides crucial guidance for improving production efficiency.

[0003] To date, significant breakthroughs have been made in the research of high-temperature and high-pressure fluid flow detection, laying a foundation for the expansion of its applications. However, overall, current high-temperature and high-pressure jet flow measurement technology still has certain shortcomings. Currently, differential pressure flow meters are mainly used for measuring the flow rate of high-temperature and high-pressure jets. Differential pressure flow meters offer high accuracy, especially in relatively stable fluid flow processes, and are widely applicable to different flow rates and diameters. However, in high-temperature and high-pressure fluid jets, the drastic velocity changes during start-up and shutdown phases, and these strong disturbances significantly impact the measurement accuracy of differential pressure flow meters. Furthermore, due to the low acquisition frequency of differential pressure flow meters, the amount of data collected during rapid start-up and shutdown is limited, further reducing measurement accuracy. Summary of the Invention

[0004] In view of the technical problems existing in the prior art, the present invention provides a method, apparatus and equipment for measuring the jet flow rate of high temperature and high pressure fluid, which can improve the measurement accuracy of jet flow rate of high temperature and high pressure fluid.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] According to a first aspect of the present invention, a method for measuring the flow rate of a high-temperature, high-pressure fluid jet is provided, comprising:

[0007] The liquid level height of the high-temperature and high-pressure fluid in the storage tank at the start of the injection and at the end of the injection are obtained, as well as the differential pressure value of the differential pressure flow meter installed on the pipeline where the storage tank is located during the steady phase.

[0008] When the time interval between the start of the injection and the end of the injection is greater than a set time, the differential pressure value of the differential pressure flowmeter in the steady phase is input into the first calculation model of the injection flow to obtain the injection flow of the high temperature and high pressure fluid.

[0009] When the time interval between the start time of the injection and the end time of the injection is not greater than a set time, the start time of the injection, the liquid level height corresponding to the start time of the injection, the end time of the injection, and the liquid level height corresponding to the end time of the injection are input into the second calculation model of the injection flow rate to obtain the injection flow rate of the high temperature and high pressure fluid.

[0010] In one possible implementation of the first aspect, the first calculation model for the jet flow rate is:

[0011]

[0012]

[0013] In the formula, q is the jet flow rate of the high-temperature and high-pressure fluid; ε is the expansibility coefficient of the high-temperature and high-pressure fluid; d is the orifice diameter of the throttling element of the differential pressure flowmeter; β is the diameter ratio of the throttling element of the differential pressure flowmeter; ρ is the density of the high-temperature and high-pressure fluid in the storage tank; Δp is the differential pressure value of the differential pressure flowmeter in the steady phase; C is the outflow coefficient of the high-temperature and high-pressure fluid in the storage tank; ρ0 is the density of water under calibration conditions; ε0 is the expansibility coefficient of water under calibration conditions; k1, k2, k3 and k4 are all coefficients.

[0014] In one possible implementation of the first aspect, the second calculation model for the jet flow rate is:

[0015]

[0016] In the formula, q is the jet flow rate of the high-temperature and high-pressure fluid; D is the inner diameter of the storage tank; ρ is the density of the high-temperature and high-pressure fluid in the storage tank; t1 is the start time of the jetting of the high-temperature and high-pressure fluid in the storage tank; h1 is the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the start time of the jetting; t2 is the end time of the jetting of the high-temperature and high-pressure fluid in the storage tank; and h2 is the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the end time of the jetting.

[0017] In one possible implementation of the first aspect, the method for obtaining the differential pressure value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady-state phase is as follows:

[0018] Obtain the current value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase;

[0019] Based on the current value, the differential pressure value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase is calculated using the linear interpolation method.

[0020] In one possible implementation of the first aspect, the setting time does not exceed 5 seconds.

[0021] According to a second aspect of the present invention, a measuring device for the flow rate of a high-temperature, high-pressure fluid jet is provided, comprising:

[0022] The acquisition module is configured to acquire the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the start of the injection and at the end of the injection, as well as the differential pressure value of the differential pressure flow meter installed on the pipeline where the storage tank is located during the steady phase.

[0023] The first calculation module is configured to input the differential pressure value of the differential pressure flow meter in the steady phase into the first calculation model of the injection flow rate when the time interval between the start time of the injection and the end time of the injection is greater than a set time, so as to obtain the injection flow rate of the high temperature and high pressure fluid.

[0024] The second calculation module is configured to input the injection start time, the liquid level height corresponding to the injection start time, the injection end time, and the liquid level height corresponding to the injection end time into the second calculation model of the injection flow rate to obtain the injection flow rate of the high temperature and high pressure fluid when the time interval between the injection start time and the injection end time is not greater than a set time.

[0025] In one possible implementation of the second aspect, the first calculation model for the jet flow rate is:

[0026]

[0027]

[0028] In the formula, q is the jet flow rate of the high-temperature and high-pressure fluid; ε is the expansibility coefficient of the high-temperature and high-pressure fluid; d is the orifice diameter of the throttling element of the differential pressure flowmeter; β is the diameter ratio of the throttling element of the differential pressure flowmeter; ρ is the density of the high-temperature and high-pressure fluid in the storage tank; Δp is the differential pressure value of the differential pressure flowmeter in the steady phase; C is the outflow coefficient of the high-temperature and high-pressure fluid in the storage tank; ρ0 is the density of water under calibration conditions; ε0 is the expansibility coefficient of water under calibration conditions; k1, k2, k3 and k4 are all coefficients.

[0029] In one possible implementation of the second aspect, the second calculation model for the jet flow rate is:

[0030]

[0031] In the formula, q is the jet flow rate of the high-temperature and high-pressure fluid; D is the inner diameter of the storage tank; ρ is the density of the high-temperature and high-pressure fluid in the storage tank; t1 is the start time of the jetting of the high-temperature and high-pressure fluid in the storage tank; h1 is the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the start time of the jetting; t2 is the end time of the jetting of the high-temperature and high-pressure fluid in the storage tank; and h2 is the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the end time of the jetting.

[0032] In one possible implementation of the second aspect, the method for obtaining the differential pressure value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady-state phase is as follows:

[0033] Obtain the current value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase;

[0034] Based on the current value, the differential pressure value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase is calculated using the linear interpolation method.

[0035] According to a third aspect of the present invention, an apparatus is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the method for measuring the flow rate of a high-temperature, high-pressure fluid jet.

[0036] Compared with existing technologies, the present invention has at least the following beneficial effects: The present invention provides a method for measuring the jet flow rate of a high-temperature and high-pressure fluid. First, it obtains the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the start and end of the jetting process, as well as the differential pressure value of a differential pressure flowmeter installed on the pipeline where the storage tank is located during the steady-state phase. Then, it compares the jetting time of the high-temperature and high-pressure fluid with a set time, and selects a calculation model based on the comparison result. Specifically, when the time interval from the start to the end of the jetting is greater than the set time, the differential pressure value of the differential pressure flowmeter during the steady-state phase is input into the first calculation model for the jet flow rate to obtain the jet flow rate of the high-temperature and high-pressure fluid, retaining the advantages of the differential pressure flowmeter in terms of high accuracy and good stability during long-term jetting. When the time interval from the start to the end of the jetting is not greater than the set time, the start time, the corresponding liquid level height at the start of the jetting, the end time, and the corresponding liquid level height at the end of the jetting are input into the second calculation model for the jet flow rate to obtain the jet flow rate of the high-temperature and high-pressure fluid. This solves the problem of poor measurement accuracy and insufficient data points of the differential pressure flowmeter caused by strong disturbances during rapid start-up and shutdown. In summary, the measurement method of the present invention retains the advantages of differential pressure flowmeters in terms of high accuracy and good stability during long-term injection, while solving the problems of poor measurement accuracy and limited data points caused by strong disturbances during rapid start-up and shutdown, thus effectively improving the measurement accuracy of jet flow of high-temperature and high-pressure fluids.

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a schematic flowchart of a method for measuring the flow rate of a high-temperature and high-pressure fluid jet according to an embodiment of the present invention;

[0040] Figure 2 In a method for measuring the jet flow rate of a high-temperature and high-pressure fluid according to an embodiment of the present invention, a pressure difference-time scatter plot of the jet flow rate of a high-temperature and high-pressure fluid is generated by a high-frequency data acquisition system.

[0041] Figure 3This is a schematic diagram of the liquid level-time trend change generated by the IMP data acquisition system in a method for measuring the flow rate of a high-temperature and high-pressure fluid jet, as described in an embodiment of the present invention. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] As a specific embodiment of the present invention, combined with Figure 1 As shown in the figure, an embodiment of the present invention provides a method for measuring the flow rate of a high-temperature, high-pressure fluid jet, as detailed below:

[0044] a. Obtain the liquid level height h1 of the high-temperature and high-pressure fluid in the storage tank at the start time t1 of the injection and the liquid level height h2 at the end time t2 of the injection, as well as the differential pressure value Δp of the differential pressure flow meter installed on the pipeline where the storage tank is located during the steady phase.

[0045] In one embodiment, regarding obtaining the liquid level height h1 of the high-temperature, high-pressure fluid in the storage tank at the start time t1 of injection and the liquid level height h2 at the end time t2 of injection, specifically, during the high-temperature, high-pressure fluid injection process, the liquid level signal of the storage tank and the injection time signal are collected using an IMP data acquisition system, such as... Figure 3 As shown, curve 19 represents the opening and closing signals of the high-temperature, high-pressure fluid injection control valve. At the start of injection (time t1), the valve control signal changes from 0 to 1, indicating that the valve is open and the high-temperature, high-pressure fluid begins to be injected. At the end of injection (time t2), the valve control signal changes from 1 to 0, indicating that the valve is closed and the high-temperature, high-pressure fluid injection process ends. Curve 20 represents the liquid level change signal in the storage tank. During the injection process from the start of injection t1 to the end of injection t2, the liquid level in the storage tank decreases from height h1 to height h2.

[0046] Regarding obtaining the differential pressure value Δp of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady-state phase, it should be noted that, as Figure 2 The image shows a high-frequency differential pressure-time scatter plot of the jet flow rate of a high-temperature, high-pressure fluid. During the jetting process, the differential pressure change of the high-temperature, high-pressure fluid flowing through the differential pressure flowmeter first experiences a steep increase, then decreases from the highest point to a certain differential pressure value. Around this value, the differential pressure change will have a stable phase, and then gradually decreases to 0. For the jet flow rate, the flow rate is mainly related to the differential pressure during the stable phase. Therefore, when measuring the flow rate, it is necessary to obtain the data from the differential pressure flowmeter during the stable phase of differential pressure change.

[0047] This embodiment describes a method for obtaining the differential pressure value Δp of a differential pressure flowmeter installed on the pipeline where the liquid storage tank is located during the steady-state phase. Specifically, it involves: first, obtaining the current value of the differential pressure flowmeter installed on the pipeline where the liquid storage tank is located during the steady-state phase; and finally, calculating the differential pressure value of the differential pressure flowmeter installed on the pipeline where the liquid storage tank is located during the steady-state phase using linear interpolation based on the current value. In other words, the current value of the differential pressure flowmeter during the steady-state phase is first transmitted to a high-frequency signal system; finally, the differential pressure value Δp of the differential pressure flowmeter during the steady-state phase is obtained using linear interpolation based on the current value, and plotted as shown below. Figure 2 The high-frequency differential pressure-time scatter plot of the high-temperature and high-pressure fluid jet flow rate is shown, thus obtaining the differential pressure value Δp in the steady-state phase.

[0048] b. When the time interval between the start time t1 and the end time t2 of the injection is greater than a set time t set When the differential pressure value Δp of the differential pressure flowmeter in the steady phase is input into the first calculation model of the jet flow rate, the jet flow rate of the high temperature and high pressure fluid is obtained.

[0049] It should be understood that the time interval from the start time t1 to the end time t2 of the injection is the actual injection time of the high-temperature and high-pressure fluid. In other words, when the actual injection time of the high-temperature and high-pressure fluid is greater than the set time t... set At that time, the jet flow rate of high temperature and high pressure fluid is calculated directly using the differential pressure value Δp of the differential pressure flow meter in the steady stage and the first calculation model of the jet flow rate.

[0050] Specifically, the first calculation model for jet flow rate is as follows:

[0051]

[0052]

[0053] In the formula, q is the jet flow rate of the high-temperature and high-pressure fluid; ε is the expansibility coefficient of the high-temperature and high-pressure fluid, which is determined using Refprop9.0_NIST property lookup software based on the system temperature and pressure; d is the orifice diameter of the throttling element of the differential pressure flowmeter; β is the diameter ratio of the throttling element of the differential pressure flowmeter; ρ is the density of the high-temperature and high-pressure fluid in the storage tank, which is determined using Refprop9.0_NIST property lookup software based on the system temperature and pressure; Δp is the differential pressure value of the differential pressure flowmeter in the steady-state phase; C is the outflow coefficient of the high-temperature and high-pressure fluid in the storage tank; ρ0 is the density of water under calibration conditions (1 atm, 0℃); ε0 is the expansibility coefficient of water under calibration conditions (1 atm, 0℃); k1, k2, k3, and k4 are all coefficients (constants), which can be obtained through calibration experiments.

[0054] c. When the time interval between the start time t1 and the end time t2 of the injection is not greater than a set time t set When the injection start time t1, the liquid level height h1 corresponding to the injection start time t1, the injection end time t2, and the liquid level height h2 corresponding to the injection end time t2 are input into the second calculation model of the injection flow rate, the injection flow rate of the high temperature and high pressure fluid is obtained.

[0055] In other words, when the actual injection time of the high-temperature, high-pressure fluid is no greater than the set time t set At that time, because the high-frequency signal data is within the set time t set The relatively short duration of the steady-state phase and insufficient data collection result in a short duration of the steady-state phase within the injection time. Therefore, a second calculation model for injection flow rate is adopted, combining the liquid level change signal from the storage tank and the time signal to calculate the injection flow rate of the high-temperature and high-pressure fluid. Preferably, the time t is set... set It lasts for 5 seconds.

[0056] Specifically, the second calculation model for jet flow rate is as follows:

[0057]

[0058] In the formula, q is the jet flow rate of the high-temperature and high-pressure fluid; D is the inner diameter of the storage tank; ρ is the density of the high-temperature and high-pressure fluid in the storage tank, which is determined using Refprop9.0_NIST property lookup software based on the system temperature and pressure; t1 is the start time of jetting the high-temperature and high-pressure fluid in the storage tank; h1 is the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the start time of jetting; t2 is the end time of jetting the high-temperature and high-pressure fluid in the storage tank; and h2 is the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the end time of jetting.

[0059] In one embodiment, the calculation model for the jet flow rate can be modified based on the characteristic that the physical properties of high-temperature and high-pressure fluids change significantly, thereby enhancing the calculation accuracy and applicable operating conditions of the calculation model.

[0060] This invention provides a device for measuring the flow rate of a high-temperature, high-pressure fluid jet, specifically comprising:

[0061] The acquisition module is configured to acquire the liquid level height h1 of the high-temperature and high-pressure fluid in the storage tank at the start time t1 of the injection and the liquid level height h2 at the end time t2 of the injection, as well as the differential pressure value Δp of the differential pressure flow meter installed on the pipeline where the storage tank is located during the steady phase.

[0062] The first calculation module is configured to calculate when the time interval from the start time t1 to the end time t2 of the injection is greater than a set time t. setWhen the differential pressure value Δp of the differential pressure flowmeter in the steady phase is input into the first calculation model of the jet flow rate, the jet flow rate of the high temperature and high pressure fluid is obtained.

[0063] The second calculation module is configured to ensure that the time interval between the start time t1 and the end time t2 of the injection is not greater than a set time t. set When the injection start time t1, the liquid level height h1 corresponding to the injection start time t1, the injection end time t2, and the liquid level height h2 corresponding to the injection end time t2 are input into the second calculation model of the injection flow rate, the injection flow rate of the high temperature and high pressure fluid is obtained.

[0064] For example, a high-frequency data acquisition system acquires the differential pressure value Δp of the differential pressure flow meter during the steady-state phase, and an IMP data acquisition system acquires the liquid level height h1 of the high-temperature, high-pressure fluid in the storage tank at the start of injection t1 and the end of injection t2. The high-frequency data acquisition system and the IMP data acquisition system are respectively connected to the acquisition module via communication, for example, through electrical or wireless connections.

[0065] For high-frequency data acquisition systems and IMP data acquisition systems, the high-frequency data acquisition system is mainly designed for situations with longer injection times. It has a higher acquisition frequency, collects a larger amount of data, and provides more accurate calculation results. The IMP data acquisition system is designed for situations with shorter injection times. It has higher accuracy in measuring data at a specific point in time, and is more accurate in measuring short injection times.

[0066] In this embodiment, the high-frequency data acquisition system uses a sampling frequency of 22Hz. Since the drawback of manual mechanical meter reading is its low reading frequency, resulting in limited data acquisition over a short period, a 22Hz high-frequency data acquisition system offers the advantages of a large data acquisition volume and abundant effective data. A set injection time t is set for different injection conditions. set Fluid injection set time t set No more than 5 seconds, when the set time t is exceeded set When the injection time is relatively long, a high-frequency data acquisition system is used to measure the data for flow rate calculation; when it is not greater than the set time t setThis method uses a combination of liquid level signals and injection time to measure and calculate flow rate. It primarily uses data acquisition from a high-frequency data acquisition system to calculate flow rate, while liquid level changes are used as a secondary method. This approach is applicable to high-temperature and high-pressure fluid injection conditions with varying injection times, offering broader applicability for flow measurement. Traditional mechanical flow measurement methods require manual reading, which is dangerous under high-temperature and high-pressure conditions. This embodiment employs an intelligent data acquisition system that remotely transmits and stores data via a differential pressure sensor, eliminating the need for manual reading and offering a higher safety factor.

[0067] In one embodiment of the present invention, a computer device is provided, comprising a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions to achieve a corresponding method flow or corresponding function. The processor described in this embodiment of the present invention can be used to implement the operation of a method for measuring the flow rate of a high-temperature, high-pressure fluid jet.

[0068] In one embodiment of the present invention, a method for measuring the flow rate of a high-temperature, high-pressure fluid jet, if implemented as a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable storage medium includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data.

[0069] The computer storage medium can be any available medium or data storage device that a computer can access, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs)), optical storage (e.g., CDs, DVDs, BDs, HVDs), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0070] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0071] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0072] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0073] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0074] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for measuring the flow rate of a high-temperature, high-pressure fluid jet, characterized in that, include: The liquid level height of the high-temperature and high-pressure fluid in the storage tank at the start of the injection and at the end of the injection are obtained, as well as the differential pressure value of the differential pressure flow meter installed on the pipeline where the storage tank is located during the steady phase. When the time interval between the start and end of the injection is greater than a set time, the differential pressure value of the differential pressure flowmeter during the steady-state phase is input into the first calculation model of the injection flow rate to obtain the injection flow rate of the high-temperature and high-pressure fluid; the first calculation model of the injection flow rate is: In the formula, The jet flow rate of the high-temperature, high-pressure fluid; The coefficient of expansion of a high-temperature, high-pressure fluid; This refers to the orifice diameter of the throttling element in a differential pressure flow meter. This refers to the diameter ratio of the throttling element in a differential pressure flow meter. The density of the high-temperature, high-pressure fluid in the storage tank; This represents the differential pressure value of the differential pressure flowmeter during the steady-state phase. This is the outflow coefficient of the high-temperature, high-pressure fluid in the storage tank; To calibrate the density of water under operating conditions, To calibrate the expandability coefficient of water under operating conditions; k 1. k 2. k 3 and k 4 are all coefficients; When the time interval between the start time of the injection and the end time of the injection is not greater than a set time, the start time of the injection, the liquid level height corresponding to the start time of the injection, the end time of the injection, and the liquid level height corresponding to the end time of the injection are input into the second calculation model of the injection flow rate to obtain the injection flow rate of the high temperature and high pressure fluid.

2. The method for measuring the flow rate of a high-temperature, high-pressure fluid jet according to claim 1, characterized in that, The second calculation model for the jet flow rate is as follows: In the formula, The jet flow rate of the high-temperature, high-pressure fluid; The inner diameter of the storage tank; The density of the high-temperature, high-pressure fluid in the storage tank; This is the start time of the injection of the high-temperature, high-pressure fluid from the storage tank; This refers to the liquid level height of the high-temperature, high-pressure fluid in the storage tank at the moment the injection begins; This is the moment when the high-temperature, high-pressure fluid in the storage tank stops being ejected; This represents the liquid level height of the high-temperature, high-pressure fluid in the storage tank at the moment the injection ends.

3. The method for measuring the flow rate of a high-temperature, high-pressure fluid jet according to claim 1, characterized in that, The method for obtaining the differential pressure value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase is as follows: Obtain the current value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase; Based on the current value, the differential pressure value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase is calculated using the linear interpolation method.

4. The method for measuring the flow rate of a high-temperature, high-pressure fluid jet according to claim 1, characterized in that, The set time shall not exceed 5 seconds.

5. A device for measuring the flow rate of a high-temperature, high-pressure fluid jet, characterized in that, include: The acquisition module is configured to acquire the liquid level height of the high-temperature and high-pressure fluid in the storage tank at the start of the injection and at the end of the injection, as well as the differential pressure value of the differential pressure flow meter installed on the pipeline where the storage tank is located during the steady phase. The first calculation module is configured to input the differential pressure value of the differential pressure flowmeter during the steady phase into the first calculation model of the jet flow rate when the time interval between the start and end of the jet is greater than a set time, thereby obtaining the jet flow rate of the high-temperature and high-pressure fluid; the first calculation model of the jet flow rate is: In the formula, The jet flow rate of the high-temperature, high-pressure fluid; The coefficient of expansion of a high-temperature, high-pressure fluid; This refers to the orifice diameter of the throttling element in a differential pressure flow meter. This refers to the diameter ratio of the throttling element in a differential pressure flow meter. The density of the high-temperature, high-pressure fluid in the storage tank; This represents the differential pressure value of the differential pressure flowmeter during the steady-state phase. This is the outflow coefficient of the high-temperature, high-pressure fluid in the storage tank; To calibrate the density of water under operating conditions, To calibrate the expandability coefficient of water under operating conditions; k 1. k 2. k 3 and k 4 are all coefficients; The second calculation module is configured to input the injection start time, the liquid level height corresponding to the injection start time, the injection end time, and the liquid level height corresponding to the injection end time into the second calculation model of the injection flow rate to obtain the injection flow rate of the high temperature and high pressure fluid when the time interval between the injection start time and the injection end time is not greater than a set time.

6. The measuring device for high-temperature and high-pressure fluid jet flow rate according to claim 5, characterized in that, The second calculation model for the jet flow rate is as follows: In the formula, The jet flow rate of the high-temperature, high-pressure fluid; The inner diameter of the storage tank; The density of the high-temperature, high-pressure fluid in the storage tank; This is the start time of the injection of the high-temperature, high-pressure fluid from the storage tank; This refers to the liquid level height of the high-temperature, high-pressure fluid in the storage tank at the moment the injection begins; This is the moment when the high-temperature, high-pressure fluid in the storage tank stops being ejected; This represents the liquid level height of the high-temperature, high-pressure fluid in the storage tank at the moment the injection ends.

7. The measuring device for high-temperature and high-pressure fluid jet flow rate according to claim 5, characterized in that, The method for obtaining the differential pressure value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase is as follows: Obtain the current value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase; Based on the current value, the differential pressure value of the differential pressure flow meter installed on the pipeline where the liquid storage tank is located during the steady phase is calculated using the linear interpolation method.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method for measuring the flow rate of a high-temperature and high-pressure fluid jet as described in any one of claims 1 to 4.

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