A method for measuring the volume of liquid in a metering tank and the metering tank itself.

Abstract

This invention provides a method for measuring the volume of liquid in a metering tank and a metering tank. The method includes: pouring a first liquid into the metering tank until the liquid level of the first liquid is a target liquid level within a target range; the relationship between the volume and the liquid level within the target range is a preset linear model; pouring out a second liquid from the target range, and determining the volume of the first liquid according to the preset linear model. The solution of this invention solves the problem of low accuracy in volume measurement results of the metering tank, reduces the influence of irregular internal components in the metering tank on volume measurement, and can effectively improve the uncertainty, accuracy, and stability of volume measurement in the metering tank.

Description

Technical Field

[0001] This invention relates to the field of metering technology, and in particular to a method for measuring the volume of liquid in a metering tank and the metering tank itself. Background Technology

[0002] Spent fuel reprocessing is a crucial step in achieving a closed nuclear fuel cycle. For reprocessing plants, nuclear material balance is an important basis for nuclear material management, cost accounting, process control, and quality assurance. IAF feed liquid is one of the key measurement points in reprocessing nuclear material balance, and the precision metering tank is a critical piece of equipment for precise metering of IAF feed liquid. The accuracy and structure of this equipment have a significant impact on the accuracy and safety of nuclear material balance throughout the entire reprocessing process.

[0003] Commercial spent fuel reprocessing plants have a 1:1 scale 1AF feed volume precision metering tank, which is characterized by its large volume and many internal components. Therefore, it is quite difficult to perform full-range metering of the straight section of the 1:1 scale 1AF feed volume precision metering tank in commercial spent fuel reprocessing plants. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for measuring the volume of liquid in a metering tank and a metering tank, which solves the problem of low accuracy of volume measurement results in the metering tank, reduces the influence of irregular internal components in the metering tank on volume measurement, and can effectively improve the uncertainty, accuracy and stability of volume measurement in the metering tank.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A method for measuring the volume of liquid material in a metering tank, comprising:

[0007] Pour the first liquid into the metering tank until the liquid level of the first liquid is the target liquid level height within the target range; the relationship between the volume within the target range and the liquid level height is a preset linear model;

[0008] The second liquid within the target range is poured out, and the volume of the first liquid is determined according to the preset linear model.

[0009] Optionally, the preset linear model is obtained through the following process:

[0010] The calibration liquid is poured into the metering tank in a preset batch;

[0011] The increment slope is determined based on the liquid level in the metering tank and the volume of the calibration liquid.

[0012] Based on the incremental slope, a preset linear model is determined.

[0013] Optionally, the incremental slope is expressed by the formula Sure;

[0014] Where i≥2, k is the increment slope, H r,j V represents the liquid level height at the j-th calibration of the r-th batch. r,j Let be the volume of the r-th batch during the j-th calibration.

[0015] Optionally, a preset linear model is determined based on the incremental slope, including:

[0016] Get the preset slope range;

[0017] Each incremental slope is compared sequentially with the preset slope range to obtain the comparison result;

[0018] Based on the comparison results, a preset linear model is determined.

[0019] Optionally, based on the comparison results, a preset linear model is determined, including:

[0020] When the comparison result indicates that the incremental slope is within the preset slope range, a preset linear model is determined based on the relationship between the liquid level and volume corresponding to the incremental slope, until the incremental slope is no longer within the preset slope range.

[0021] Optionally, the method for measuring the volume of liquid in the metering tank also includes:

[0022] Uncertainty evaluation is performed on the preset linear model to obtain a preset linear model that satisfies the uncertainty condition.

[0023] Optionally, the second liquid within the target range is poured out, and the volume of the first liquid is determined according to the preset linear model, including:

[0024] The second liquid in the target area is poured out by siphoning.

[0025] Based on a preset linear model, determine the first volume of the second liquid within the target range to be poured out;

[0026] The volume of the first liquid is determined based on the second volume of the liquid remaining in the metering tank.

[0027] The present invention also provides a metering tank, comprising:

[0028] Metering tank body;

[0029] At least one liquid level limiting pipe is vertically arranged inside the metering tank body; the liquid level limiting pipe is used to siphon out the liquid in the metering tank body.

[0030] Optionally, the liquid level corresponding to the opening on the first side of the liquid level limiting tube is the target liquid level.

[0031] Optionally, at least one irregular internal component is provided within the metering tank.

[0032] The above-described solution of the present invention has at least the following beneficial effects:

[0033] The above-described solution of the present invention involves pouring a first liquid into the metering tank until the target liquid level of the first liquid is within the target liquid level height of the target range; the relationship between the volume and the liquid level height within the target range is a preset linear model; the second liquid within the target range is poured out, and the volume of the first liquid is determined according to the preset linear model; this solves the problem of low accuracy in volume measurement results of the metering tank, reduces the influence of irregular internal components in the metering tank on volume measurement, and can effectively improve the uncertainty, accuracy, and stability of volume measurement in the metering tank. Attached Figure Description

[0034] Figure 1 This is a schematic flowchart of the liquid volume measurement method in the metering tank according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the metering tank according to an embodiment of the present invention. Detailed Implementation

[0036] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0037] like Figure 1 As shown, an embodiment of the present invention proposes a method for measuring the volume of liquid material in a metering tank, comprising:

[0038] Step 11: Pour the first liquid into the metering tank until the liquid level of the first liquid is the target liquid level height within the target range; the relationship between the volume and the liquid level height within the target range is a preset linear model;

[0039] Step 12: Pour out the second liquid within the target range and determine the volume of the first liquid according to the preset linear model.

[0040] In this embodiment, the metering tank is preferably an 1AF metering tank. Since the metering tank contains multiple irregular internal components, the volume change between different liquid levels is non-linear when the first liquid is poured into it. To achieve higher accuracy in measuring the volume of the first liquid in the metering tank, the volume of the first liquid to be measured is poured into the metering tank until the liquid level is the target liquid level within the target range. The target range is a pre-defined interval. The metering tank is pre-divided according to the changes in volume and liquid level. A pre-defined interval is defined for segments where the volume and liquid level change linearly, and a pre-defined linear model is determined for each interval. When measuring the volume of the first liquid, the second liquid within the target interval can be poured out first. Based on the pre-defined linear model within the target interval, the amount of the poured-out second liquid can be determined, and the remaining liquid volume can also be determined, thus determining the volume of the first liquid. This solution solves the problem of low accuracy in the volume measurement results of the metering tank, reduces the influence of irregular internal components on volume measurement, and effectively improves the uncertainty, accuracy, and stability of the volume measurement.

[0041] In an optional embodiment of the present invention, the preset linear model in step 11 is obtained through the following process:

[0042] Step 11a: Pour the calibration liquid into the metering tank according to the preset batch;

[0043] Step 11b: Determine the increment slope based on the liquid level height in the metering tank and the volume of the calibration liquid;

[0044] Step 11c: Determine the preset linear model based on the incremental slope.

[0045] In this embodiment of the invention, a preset linear model is used to ensure the linear relationship between volume and liquid level in a preset interval within the metering tank. The linear relationship between volume and liquid level in the metering tank can be reflected by the incremental slope during the calibration of the metering tank.

[0046] A known volume of calibration liquid is poured into the metering tank in a predetermined batch. The calibration liquid is preferably a feed liquid, but it can also be other liquids, which are not limited in this application. Based on the liquid level in the metering tank and the volume (known quantity) of the calibration liquid, the increment slope is determined. Based on the increment slope, the liquid level in the metering tank is limited, and the volume in the metering tank under the limited liquid level is measured to establish a predetermined linear model.

[0047] In an optional embodiment of the present invention, the incremental slope in step 11b is expressed by the formula Sure;

[0048] Where i≥2, k is the increment slope, H r,j V represents the liquid level height at the j-th calibration of the r-th batch. r,j Let be the volume of the r-th batch during the j-th calibration.

[0049] In this embodiment of the invention, the incremental slope represents the linear relationship between the volume in the metering tank and the liquid level height, and this incremental slope is... When the change in the cross-sectional area of ​​the calibration liquid that can be contained in the metering tank tends to be constant, the linear relationship between the volume in the metering tank and the liquid level is good.

[0050] In order to establish a preset linear model of the volume of the metering tank and the liquid level, the control volume and the liquid level should have a good linear relationship.

[0051] In an optional embodiment of the present invention, step 11c includes:

[0052] Step 11c1: Obtain the preset slope range;

[0053] Step 11c2: Compare each incremental slope with the preset slope range in sequence to obtain the comparison result;

[0054] Step 11c3: Determine the preset linear model based on the comparison results.

[0055] In this embodiment, in order to ensure a good linear relationship between volume and liquid level, a preset slope range is set, and it is determined whether the incremental slope is within the preset slope range to obtain a comparison result. Based on the comparison result, a preset interval and a preset linear model are determined. The preset interval means that the incremental slope ratio within a continuous time period is within the preset slope range.

[0056] It is worth noting that the smaller the range of the preset slope setting, the better the linear effect of the corresponding preset linear model.

[0057] In an optional embodiment of the present invention, step 11c3 includes:

[0058] When the comparison result indicates that the incremental slope is within the preset slope range, a preset linear model is determined based on the relationship between the liquid level and volume corresponding to the incremental slope, until the incremental slope is no longer within the preset slope range.

[0059] In this embodiment, the comparison result is used to determine whether the incremental slope meets the preset slope range condition. When the incremental slope is within the preset slope range, it is determined that the relationship between the liquid level height and the volume is linear. Until the incremental slope is no longer within the preset slope range, the interval that previously met the preset slope range condition is determined as a preset interval.

[0060] In an optional embodiment of the present invention, the method for measuring the volume of liquid in the metering tank further includes:

[0061] Step 14: Perform uncertainty assessment on the preset linear model to obtain a preset linear model that satisfies the uncertainty condition.

[0062] In this embodiment, since the liquid level in the metering tank is usually discharged using a siphon method, there is a certain amount of liquid backflow during discharge, resulting in fluctuations in the liquid level within a certain range. Therefore, by determining the liquid level and the range of fluctuation, this range is defined as the measurement range of the preset linear model of the metering tank. The internal components with irregular cross-sectional areas in the metering tank are moved outside the measurement range, and the uncertainty of the preset linear model is evaluated to obtain a preset linear model that meets the uncertainty conditions. This improves the uncertainty, accuracy, and stability of the preset linear model of the metering tank.

[0063] In an optional embodiment of the present invention, step 12 includes:

[0064] Step 121: The second liquid in the target area is poured out by siphon.

[0065] Step 122: Determine the first volume of the second liquid in the target interval to be poured out according to the preset linear model;

[0066] Step 123: Determine the volume of the first liquid based on the second volume of the liquid remaining in the metering tank.

[0067] like Figure 2 As shown, in this embodiment, by setting a liquid level limiting pipe 2 in the metering tank, the preset interval of the predetermined linear model is divided. The liquid level limiting pipe 2 in the metering tank siphons out all the liquid above the bottom opening of the liquid level limiting pipe 2 in a siphon manner, so as to ensure that the liquid level height of the liquid is controlled at the bottom opening of the liquid level limiting pipe 2.

[0068] The positions of the bottom openings of different liquid level limiting pipes 2 correspond to different preset intervals. Based on the preset linear model, the first volume of the second liquid in the target interval is determined. The volume in the remaining interval of the metering tank is known. Therefore, the volume of the first liquid can be determined based on the second volume of the liquid in the remaining section of the metering tank.

[0069] like Figure 2 As shown, in a specific embodiment, the volume of liquid material in the metering tank 1AF is measured, specifically:

[0070] Step 21: Determine the liquid level height and fluctuation range of the 1AF metering tank, and use this to determine the preset linear range of the preset linear model; the internal components with irregular cross-sectional area changes in the 1AF metering tank should be arranged to avoid the measurement range of the volumetric metering model as much as possible.

[0071] Step 22: After standardizing a series of liquid level values ​​obtained through calibration tests and the corresponding known calibration volumes, statistical analysis is performed to establish a preset linear model of the 1AF metering tank within a predetermined linear range of volume and liquid level height.

[0072] Step 23: Evaluate the uncertainty of the model to ensure that the uncertainty of the preset linear model of the 1AF metering cell meets the requirements;

[0073] Step 24: Incorporate the preset linear model into the measurement and control system;

[0074] Step 25: The liquid is introduced into the 1AF metering tank and the liquid level of the entire 1AF metering tank is limited by the first liquid level limiting pipe 21 to be kept within the measurement range of the third layer volume metering model, so as to measure the volume from the bottom to the current liquid level.

[0075] Step 26: Use the second liquid level limiting tube 22 to limit the liquid level of the entire 1AF metering tank to be kept within the measurement range of the second layer preset linear model, and measure the volume between the bottom and the current liquid level. At this time, the liquid between the opening of the first liquid level limiting tube 21 and the opening of the second liquid level limiting tube 22 has been introduced into other equipment for temporary storage or use.

[0076] Step 27: Use the third liquid level limiting tube 23 to limit the liquid level of the entire 1AF metering tank to be kept within the measurement range of the first layer preset linear model, and measure the volume between the bottom and the current liquid level. At this time, the liquid between the pipe opening of the second liquid level limiting tube 22 and the pipe opening of the third liquid level limiting tube 23 has been introduced into other equipment for temporary storage or use.

[0077] Step 28: Finally, the remaining liquid is discharged using the third liquid level limiting tube 24.

[0078] In this embodiment of the invention, a first liquid is poured into the metering tank until the target liquid level of the first liquid is within the target liquid level height of the target range; the relationship between the volume and the liquid level height within the target range is a preset linear model; a second liquid is poured out from the target range, and the volume of the first liquid is determined according to the preset linear model. This solves the problem of low accuracy in volume measurement results of the metering tank, reduces the influence of irregular internal components in the metering tank on volume measurement, and effectively improves the uncertainty, accuracy, and stability of volume measurement in the metering tank.

[0079] like Figure 2As shown, an embodiment of the present invention also provides a metering tank, comprising:

[0080] Metering tank body 1;

[0081] At least one liquid level limiting pipe 2 is vertically arranged inside the metering tank body 1; the liquid level limiting pipe 2 is used to siphon out the liquid in the metering tank body 1.

[0082] Optionally, the liquid level corresponding to the opening on the first side of the liquid level limiting tube 2 is the target liquid level.

[0083] Optionally, at least one irregular internal component is provided inside the metering tank body 1.

[0084] It should be noted that the metering tank is a device corresponding to the above method, and all implementation methods in the above method embodiments are applicable to the embodiments of the metering tank and can achieve the same technical effect.

[0085] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0086] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0087] In the embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0088] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0089] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0090] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0091] Furthermore, it should be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of the present invention. Moreover, the steps performing the above-described series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof. This is something that those skilled in the art can achieve by using their basic programming skills after reading the description of the present invention.

[0092] Therefore, the object of the present invention can also be achieved by running a program or a set of programs on any computing device. The computing device can be a known general-purpose device. Therefore, the object of the present invention can also be achieved simply by providing a program product containing program code implementing the method or apparatus. That is, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent to the present invention. Furthermore, the steps performing the above series of processes can naturally be performed in the order described, but are not necessarily required to be performed in chronological order. Some steps can be performed in parallel or independently of each other.

[0093] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for measuring the volume of liquid material in a metering tank, characterized in that, include: Pour the first liquid into the metering tank until the liquid level of the first liquid is the target liquid level height within the target range; The relationship between the volume and liquid level within the target range is based on a preset linear model. Pour out the second liquid within the target range, and determine the volume of the first liquid according to the preset linear model; The preset linear model is obtained through the following process: The calibration liquid is poured into the metering tank in a preset batch; The increment slope is determined based on the liquid level in the metering tank and the volume of the calibration liquid. Based on the incremental slope, a preset linear model is determined; the preset linear model is used to ensure the linear relationship between volume and liquid level in the preset interval within the metering tank. The incremental slope is expressed by the formula Sure; Where i≥2, k is the increment slope, H r，j V represents the liquid level height at the j-th calibration of the r-th batch. r，j Let r be the volume at the j-th calibration of the r-th batch; Based on the incremental slope, a preset linear model is determined, including: Get the preset slope range; Each incremental slope is compared sequentially with the preset slope range to obtain the comparison result; Based on the comparison results, a preset linear model is determined; Based on the comparison results, a preset linear model is determined, including: When the comparison result indicates that the incremental slope is within the preset slope range, a preset linear model is determined based on the relationship between the liquid level and volume corresponding to the incremental slope. This process continues until the incremental slope is no longer within the preset slope range. The interval that previously met the preset slope range condition is then defined as a preset interval. Furthermore, a liquid level limiting tube is installed in the metering tank to divide the preset interval of the determined preset linear model.

2. The method for measuring the volume of liquid in a metering tank according to claim 1, characterized in that, Also includes: Uncertainty evaluation is performed on the preset linear model to obtain a preset linear model that satisfies the uncertainty condition.

3. The method for measuring the volume of liquid in a metering tank according to claim 1, characterized in that, Pour out the second liquid within the target range, and determine the volume of the first liquid according to the preset linear model, including: The second liquid in the target area is poured out by siphoning. Based on a preset linear model, determine the first volume of the second liquid within the target range to be poured out; The volume of the first liquid is determined based on the second volume of the liquid remaining in the metering tank.

4. A metering cell, characterized in that, The volume measurement of the liquid in the metering tank is achieved by the method described in any one of claims 1 to 3, wherein the metering tank comprises: Metering tank body (1); At least one liquid level limiting pipe (2) is vertically installed inside the metering tank body (1); the liquid level limiting pipe (2) is used to siphon out the liquid in the metering tank body (1); specifically, the first liquid level limiting pipe (21) limits the liquid level of the metering tank body (1) to be maintained within the measurement range of the third layer preset linear model, and measures the volume between the bottom and the current liquid level; the second liquid level limiting pipe (22) limits the liquid level of the metering tank body (1) to be maintained within the measurement range of the second layer preset linear model, and measures the volume between the bottom and the current liquid level; the third liquid level limiting pipe (23) limits the liquid level of the metering tank body (1) to be maintained within the measurement range of the first layer preset linear model, and measures the volume between the bottom and the current liquid level; the fourth liquid level limiting pipe (24) completes the export of the remaining liquid.

5. The metering tank according to claim 4, characterized in that, The liquid level corresponding to the opening on the first side of the liquid level limiting tube (2) is the target liquid level.

6. The metering tank according to claim 4, characterized in that, At least one irregular internal component is provided inside the metering tank body (1).

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