Method and device for determining volume of radioactive feed liquid in metering tank

Abstract

The invention provides a method and a device for determining the volume of radioactive feed liquid in a metering tank. The method comprises the following steps: acquiring calibration data of a metering tank; preprocessing the calibration data to obtain preprocessed calibration data; according to the preprocessed calibration data and a preset linear model, determining a radioactive material liquid integral region metering model; and obtaining a volume measurement value of the radioactive feed liquid according to the received liquid level data of the radioactive feed liquid in the metering tank and the radioactive feed liquid integral region metering model. According to the method, the calibration data of the metering tank are obtained and preprocessed, and then the radioactive feed liquid integral region metering model is determined by using the preset linear model, so that the volume measurement value of the radioactive feed liquid can be obtained according to the liquid level data of the radioactive feed liquid in the metering tank; and the metering precision of the metering tank and the accuracy of nuclear material balance can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive liquid material, and also to a method and a device for determining the volume of radioactive liquid material in a metering tank. Background Art

[0002] The volume balance of radioactive liquid is an important basis for nuclear material control, quality assurance and cost accounting. The metering tank is a key measuring device for determining the volume of radioactive liquid. The accuracy of the equipment and the metering method have an important impact on the accuracy and safety of nuclear material balance.

[0003] The volume measurement of radioactive liquid is mainly carried out through air blowing measurement, and the density and liquid level of the liquid are obtained by using the static pressure principle, and then the volume of the liquid is calculated according to the liquid level-volume accurate measurement model of the metering tank. At present, the accurate measurement model of radioactive liquid metering tanks in China usually adopts multiple measurement equations to correspond to the volume measurement of the entire interval. However, with the increasing demand for radioactive liquid measurement, the metering tanks currently used have complex structures and many internal components. The conventional method of using multiple measurement equations to correspond to the volume measurement of the entire interval is bound to affect the measurement accuracy. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method and device for determining the volume of radioactive liquid in a metering tank, so as to improve the accuracy of measuring the volume of radioactive liquid in the metering tank.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] A first aspect of the present invention provides a method for determining the volume of radioactive liquid in a metering tank, comprising:

[0007] Obtain calibration data of the metering tank;

[0008] Preprocessing the calibration data to obtain preprocessed calibration data;

[0009] Determining a radioactive material liquid integral area metering model according to the pre-processed calibration data and a preset linear model;

[0010] The volume measurement value of the radioactive liquid is obtained according to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model.

[0011] Optionally, obtain calibration data of the metering tank, including:

[0012] Obtaining a preset volume of a preset calibration solution;

[0013] The preset calibration liquids are grouped to obtain multiple groups of preset calibration liquids; the volumes of the preset calibration liquids in each group are the same;

[0014] The plurality of groups of preset calibration liquids are sequentially added into the metering tank to obtain calibration data; the calibration data includes the mass, density, liquid level, liquid level pressure and temperature of the preset calibration liquids in the metering tank.

[0015] Optionally, preprocessing the calibration data to obtain preprocessed calibration data includes:

[0016] Correcting the calibration data to obtain corrected calibration data;

[0017] The corrected calibration data is normalized to obtain pre-processed calibration data.

[0018] Optionally, normalizing the corrected calibration data to obtain preprocessed calibration data includes:

[0019] according to Normalizing the corrected calibration data to obtain pre-processed calibration data;

[0020] Among them, X norm is the calibration data after preprocessing, X is the calibration data after correction, and X max is the maximum value of the calibration data after correction, X min is the minimum value in the corrected calibration data.

[0021] Optionally, determining a radioactive material liquid integral area metering model according to the preprocessed calibration data and a preset linear model includes:

[0022] According to the preprocessed calibration data and Obtain the volume of the i-th group of preset calibration solutions;

[0023] According to the preprocessed calibration data, and Get the first parameter and the second parameter;

[0024] Determine a radioactive material liquid integral area metering model according to the first parameter, the second parameter and a preset linear model V=aH+b;

[0025] Among them, m i is the mass of the preset calibration solution of group i, ρ i is the density of the preset calibration solution of group i, H i is the liquid level height of the preset calibration liquid of group i, V i is the volume of the preset calibration liquid of the i-th group, i is the group number, a is the first parameter, b is the second parameter, and n is the total number of groups.

[0026] Optionally, determining a radioactive material liquid integral area metering model according to the first parameter, the second parameter and a preset linear model V=aH+b includes:

[0027] Determine an initial metrology model according to the first parameter, the second parameter and a preset linear model V=aH+b;

[0028] Determining an error based on the preprocessed calibration data and the initial metrology model;

[0029] A radioactive material liquid integral area metering model is determined based on the error and the initial metering model.

[0030] Optionally, obtaining a volume measurement value of the radioactive liquid according to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model includes:

[0031] Receive liquid level data of radioactive liquid in the metering tank;

[0032] Determining a corresponding radioactive material liquid integral area metering model according to the liquid level data of the radioactive material liquid in the metering tank;

[0033] The liquid level data of the radioactive liquid in the metering tank is input into the corresponding radioactive liquid integral area metering model for measurement to obtain the volume measurement value of the radioactive liquid.

[0034] A second aspect of the present invention provides a device for determining the volume of radioactive liquid in a metering tank, comprising:

[0035] An acquisition module, used to acquire calibration data;

[0036] A preprocessing module, used for preprocessing the calibration data to obtain preprocessed calibration data;

[0037] A determination module, used to determine a radioactive material liquid integral area measurement model according to the preprocessed calibration data and a preset linear model;

[0038] The metering module is used to obtain the volume measurement value of the radioactive liquid according to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model.

[0039] According to a third aspect of the present invention, a computing device is provided, comprising: a processor and a memory storing a computer program, wherein when the computer program is executed by the processor, the method according to the first aspect is executed.

[0040] A fourth aspect of the present invention provides a computer-readable storage medium storing instructions, which, when executed on a computer, causes the computer to execute the method described in the first aspect.

[0041] The above solution of the present invention includes at least the following beneficial effects:

[0042] The above scheme of the present invention obtains the calibration data of the metering tank, pre-processes it, and then uses a preset linear model to determine the radioactive material liquid integral area metering model, so that the volume measurement value of the radioactive material liquid can be obtained according to the liquid level data of the radioactive material liquid in the metering tank, which can effectively improve the metering accuracy of the metering tank and the accuracy of nuclear material balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a schematic flow chart of a method for determining the volume of radioactive liquid in a metering tank in an embodiment of the present invention;

[0044] Figure 2 is a schematic structural diagram of a metering tank in an embodiment of the present invention;

[0045] Figure 3 It is a schematic diagram of the structure of a device for determining the volume of radioactive liquid in a metering tank in an embodiment of the present invention.

[0046] Explanation of the reference numerals: 1-main body, 2-liquid level limiting tube, 31-first modeling interval, 32-second modeling interval, 33-third modeling interval. DETAILED DESCRIPTION

[0047] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0048] like Figure 1 As shown, an embodiment of the present invention provides a method for determining the volume of radioactive liquid in a metering tank, comprising the following steps:

[0049] Step 101, obtaining calibration data of the metering tank;

[0050] Step 102, preprocessing the calibration data to obtain preprocessed calibration data;

[0051] Step 103, determining a radioactive material liquid integral area metering model according to the preprocessed calibration data and a preset linear model;

[0052] Step 104, obtaining a volume measurement value of the radioactive liquid according to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model.

[0053] The method for determining the volume of radioactive liquid in a metering tank proposed in an embodiment of the present invention obtains the calibration data of the metering tank, pre-processes the data, and then uses a preset linear model to determine the radioactive liquid integral area metering model, thereby obtaining the volume measurement value of the radioactive liquid based on the liquid level data of the radioactive liquid in the metering tank, which can effectively improve the metering accuracy of the metering tank and the accuracy of nuclear material balance.

[0054] In an optional embodiment of the present invention, step 101 includes:

[0055] Step 1011, obtaining a preset volume of a preset calibration solution;

[0056] Specifically, a preset calibration liquid with a preset volume greater than the capacity of the metering tank can be obtained according to the capacity of the metering tank, so that the metering tank can be filled with the preset calibration liquid of the preset volume to obtain calibration data. Here, the preset calibration liquid can be deionized water, which refers to pure water after impurities in the form of ions are removed. Deionized water has the advantages of high purity and low ion content. Using it as the preset calibration liquid can avoid the influence on the subsequent model, which is conducive to improving the metering accuracy of the metering tank.

[0057] Step 1012, grouping the preset calibration solutions to obtain multiple groups of preset calibration solutions; the volumes of the preset calibration solutions in each group are the same;

[0058] Specifically, the preset calibration liquid can be divided into n groups, the serial number of each group is i (i=1, 2, 3, ..., n, 1≤i≤n, i is an integer), and the volume of each group of preset calibration liquid is the same. Therefore, the total volume of multiple groups of preset calibration liquid is less than or equal to the preset volume to ensure that preset calibration liquids with the same volume in each group can be obtained.

[0059] Step 1013, adding the plurality of groups of preset calibration liquids into the metering tank in sequence to obtain calibration data; the calibration data includes the mass, density, liquid level, liquid level pressure and temperature of the preset calibration liquids in the metering tank.

[0060] Specifically, multiple groups of preset calibration liquids are added to the metering tank in sequence according to the grouping sequence until it is full. After each addition, the mass and density of the preset calibration liquid in the metering tank, as well as the liquid level pressure, density pressure and temperature of the preset calibration liquid in the metering tank are recorded, and these data are used as calibration data. The preset calibration liquid added to the metering tank is weighed by an electronic scale, and then after determining the added mass, the volume of the preset calibration liquid added to the metering tank can be calculated based on the density. A blowing tube is inserted into the metering tank, and the gas of the blowing device escapes from the lower port of the blowing tube inserted into the preset calibration liquid, bubbles and is discharged into the gas phase space through the preset calibration liquid. When a small amount of bubbles are discharged from the lower end of the blowing tube, the loss of gas in the blowing tube is ignored, so that the air pressure in the blowing tube is almost equal to the static pressure of the liquid level of the preset calibration liquid. Therefore, the differential pressure value indicated by the transmitter can reflect the liquid level height of the preset calibration liquid in the metering tank. This differential pressure value has the following relationship with the height of the liquid: Among them, ρ is the density of the preset calibration liquid, and g is the local gravity acceleration. Through this formula, the liquid level height h of the preset calibration liquid in the metering tank, that is, the liquid level of the preset calibration liquid, can be calculated. Through P = ρ × g × h, the liquid level pressure P can be calculated; the temperature of the preset calibration liquid in the metering tank can be obtained using a temperature sensor; and the density of the preset calibration liquid in the metering tank can be measured using an intelligent liquid density meter.

[0061] In an optional embodiment of the present invention, step 102 includes:

[0062] Step 1021, correcting the calibration data to obtain corrected calibration data;

[0063] Specifically, since density may vary with temperature and pressure, the density data in the calibration data can be corrected using an empirical formula or table lookup method; if temperature has a significant effect on volume (such as thermal expansion), the thermal expansion coefficient can be used to correct the temperature data in the calibration data; usually, the effect of liquid level pressure on liquid volume is small, but under high pressure, the liquid level pressure data in the calibration data may need to be corrected. The purpose of correction is to improve the accuracy of subsequent calculations. Depending on the actual situation, you can choose to correct or not correct, and directly normalize the calibration data.

[0064] Step 1022, normalize the corrected calibration data to obtain pre-processed calibration data.

[0065] Specifically, normalizing the calibration data so that the data falls within a small specific interval can reduce the amount of calculation and improve processing efficiency.

[0066] In an optional embodiment of the present invention, step 1022 includes:

[0067] according to Normalizing the corrected calibration data to obtain pre-processed calibration data;

[0068] Among them, X norm is the calibration data after preprocessing, X is the calibration data after correction, and X max is the maximum value of the calibration data after correction, X min is the minimum value in the corrected calibration data.

[0069] Specifically, the above method is used to normalize the calibration data, which is relatively simple, easy to operate and implement. According to the actual situation, the following method can also be selected to normalize the calibration data:

[0070] Among them, X norm is the calibration data after preprocessing, X is the calibration data after correction, μ is the mean of the calibration data after correction, and σ is the standard deviation of the calibration data after correction.

[0071] This normalization method is suitable for situations where the calibration data is close to a normal distribution.

[0072] In an optional embodiment of the present invention, step 103 includes:

[0073] Step 1031, based on the preprocessed calibration data and Obtain the volume of the i-th group of preset calibration solutions;

[0074] Specifically, since the preset calibration liquid is added to the metering tank in sequence, the metering tank can be filled up by adding it n times in total, so the calibration data after the i-th addition to the metering tank can also be said to be the i-th group of calibration data. There are several groups of preset calibration liquids, and there are several corresponding groups of calibration data. After the i-th group of preset calibration liquid is added to the metering tank, the calibration data of the i-th group obtained includes: the mass and density of the preset calibration liquid in the tank after the i-th group of preset calibration liquid is added to the metering tank, which can be used to calculate the volume of the preset calibration liquid in the tank after the i-th group of preset calibration liquid is added to the metering tank.

[0075] Step 1032: according to the preprocessed calibration data, and Get the first parameter and the second parameter;

[0076] Specifically, using n sets of calibration data, Solving, we can find the first parameter a and the second parameter b that minimize the residual sum of squares.

[0077] Step 1033, determining a radioactive material liquid integral area metering model according to the first parameter, the second parameter and a preset linear model V=aH+b;

[0078] Specifically, after obtaining the specific values ​​of the first parameter a and the second parameter b, they can be substituted into the preset linear model V=aH+b to determine the radioactive material liquid integral area metering model for subsequent calculation of the radioactive material liquid volume in the metering tank.

[0079] Among them, m i is the mass of the preset calibration solution of group i, ρ i is the density of the preset calibration solution of group i, H i is the liquid level height of the preset calibration liquid of group i, V i is the volume of the preset calibration liquid of the i-th group, i is the group number, a is the first parameter, b is the second parameter, and n is the total number of groups.

[0080] It should be noted that if Figure 2 As shown, a plurality of liquid level limiting tubes 2 are provided in the main body 1 of the metering tank. The liquid level limiting tubes 2 can be arranged at a position where the cross-sectional area linearity is relatively good. Modeling intervals (such as the first modeling interval 31, the second modeling interval 32, and the third modeling interval 33 in the figure) are set in a certain interval (such as ±150 mm) of the mouth of the liquid level limiting tube 2, and the calibration data in different modeling intervals are used to obtain the metering model of the radioactive material liquid integral area of ​​the corresponding modeling interval. Generally speaking, since the length (or height) of each liquid level limiting tube 2 is different, a corresponding radioactive material liquid integral area metering model is established at each liquid level limiting tube 2. Taking the third modeling interval 33 as an example, a plurality of groups of calibration data in the third modeling interval 33 are used to determine the metering model of the radioactive material liquid integral area corresponding to the interval. When in actual application, the liquid level of the radioactive material liquid in the metering tank is in a state such as Figure 2 When the leftmost liquid level is within the pipe opening interval (such as ±150 mm) of the pipe 2, the volume can be calculated using the radioactive material liquid integral area metering model corresponding to the third modeling interval 33. By using the segmented modeling metering method for the metering tank, the influence of the internal components on the volume measurement accuracy can be effectively reduced, and the accuracy of the radioactive material liquid balance can be improved.

[0081] In an optional embodiment of the present invention, step 1033 includes:

[0082] Step 10331, determining an initial measurement model according to the first parameter, the second parameter and a preset linear model V=aH+b;

[0083] Specifically, the optimal solutions of the determined first parameter and the second parameter may be substituted into a preset linear model to obtain an initial measurement model.

[0084] Step 10332, determining an error based on the preprocessed calibration data and the initial metrology model;

[0085] Specifically, the data in the preprocessed calibration data that does not participate in the calculation of the first parameter and the second parameter can be used as verification data, which is input into the initial measurement model to obtain the predicted volume, and the predicted volume is compared with the actual volume in the verification data to obtain the error of the initial measurement model. For example, if the predicted volume is 5 and the actual volume is 4, the error is -1.

[0086] Step 10333, determining the radioactive material liquid integral area metering model based on the error and the initial metering model.

[0087] Specifically, the error of the initial metering model can be superimposed on the initial metering model to obtain the metering model of the radioactive material liquid integral area. If the error of the initial metering model is -1, the volume output by the metering model of the radioactive material liquid integral area is the initial metering model-1.

[0088] In an optional embodiment of the present invention, step 104 includes:

[0089] Step 1041, receiving liquid level data of the radioactive liquid in the metering tank;

[0090] Specifically, the liquid level data of the radioactive liquid in the metering tank may be received by wire or wireless means, and the volume of the radioactive liquid in the metering tank may be calculated using the data.

[0091] Step 1042, determining a corresponding radioactive material liquid integral area metering model according to the liquid level data of the radioactive material liquid in the metering tank;

[0092] Specifically, since the modeling interval is set in a certain interval (such as between ±150mm) of each liquid level limiting tube mouth in the metering tank, the corresponding modeling interval can be determined according to the liquid level data of the radioactive liquid in the metering tank, and then the corresponding radioactive material liquid integral area metering model can be determined.

[0093] Step 1043, inputting the liquid level data of the radioactive liquid in the metering tank into the corresponding radioactive liquid integral area metering model for measurement to obtain the volume measurement value of the radioactive liquid.

[0094] Specifically, the liquid level data of the radioactive liquid in the metering tank is input into the corresponding radioactive liquid integral area metering model to obtain the volume measurement value of the radioactive liquid.

[0095] A specific embodiment of the method for determining the volume of radioactive liquid in the metering tank proposed in the embodiment of the present invention is:

[0096] Step 111, obtaining calibration data.

[0097] Deionized water is used as the preset calibration liquid. The preset calibration liquid with the rated volume added to the metering tank is planned each time. The added preset calibration liquid is weighed with an electronic scale. After determining the added mass, the added volume can be calculated based on the density. After each addition, relevant data is recorded, such as the mass, density, liquid level, liquid level pressure and temperature of the preset calibration liquid in the metering tank after each addition of the preset calibration liquid, as calibration data.

[0098] Step 112, preprocessing the calibration data.

[0099] The temperature, density and other data in the calibration data can be corrected to eliminate errors and improve the accuracy of subsequent calculations. The calibration data is then normalized to improve calculation efficiency.

[0100] Step 113, determining the radioactive material liquid integral area metering model.

[0101] Using the calibration data and the preset linear model V=aH+b, the radioactive material liquid integral area metrology model is determined, and uncertainty assessment is performed, that is, the model error is determined and the error is superimposed into the model as the final radioactive material liquid integral area metrology model.

[0102] Step 114, calculating the volume measurement value of the radioactive liquid.

[0103] The final radioactive material liquid integral area metering model can be solidified into the measurement system. According to the received liquid level data of the radioactive material liquid in the metering tank, the corresponding volume-liquid level model (i.e., the radioactive material liquid integral area metering model) is used in the corresponding liquid level interval to measure the radioactive material liquid and complete the measurement of the radioactive material liquid volume.

[0104] The method for determining the volume of radioactive liquid in a metering tank in an embodiment of the present invention selects calibration data of a liquid level-limited nozzle measurement interval, performs data standardization processing, and then determines a radioactive liquid integral area metering model and uncertainty assessment according to a preset linear model to obtain a segmented model for each interval, thereby improving measurement accuracy.

[0105] It should be noted that, since the calibration data has been normalized, the volume measurement value of the radioactive liquid finally calculated can be denormalized to obtain the true volume measurement value.

[0106] like Figure 3 As shown, an embodiment of the present invention provides a device 200 for determining the volume of radioactive liquid in a metering tank, comprising:

[0107] An acquisition module 201 is used to acquire calibration data;

[0108] A preprocessing module 202, used to preprocess the calibration data to obtain preprocessed calibration data;

[0109] A determination module 203 is used to determine a radioactive material liquid integral area measurement model according to the preprocessed calibration data and a preset linear model;

[0110] The metering module 204 is used to obtain the volume measurement value of the radioactive liquid according to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model.

[0111] Optionally, obtain calibration data of the metering tank, including:

[0112] Obtaining a preset volume of a preset calibration solution;

[0113] The preset calibration liquids are grouped to obtain multiple groups of preset calibration liquids; the volumes of the preset calibration liquids in each group are the same;

[0114] The plurality of groups of preset calibration liquids are sequentially added into the metering tank to obtain calibration data; the calibration data includes the mass, density, liquid level, liquid level pressure and temperature of the preset calibration liquids in the metering tank.

[0115] Optionally, preprocessing the calibration data to obtain preprocessed calibration data includes:

[0116] Correcting the calibration data to obtain corrected calibration data;

[0117] The corrected calibration data is normalized to obtain pre-processed calibration data.

[0118] Optionally, normalizing the corrected calibration data to obtain preprocessed calibration data includes:

[0119] according to Normalizing the corrected calibration data to obtain pre-processed calibration data;

[0120] Among them, X norm is the calibration data after preprocessing, X is the calibration data after correction, and X max is the maximum value of the calibration data after correction, X min is the minimum value in the corrected calibration data.

[0121] Optionally, determining a radioactive material liquid integral area metering model according to the preprocessed calibration data and a preset linear model includes:

[0122] According to the preprocessed calibration data and Obtain the volume of the i-th group of preset calibration solutions;

[0123] According to the preprocessed calibration data, and Get the first parameter and the second parameter;

[0124] Determine a radioactive material liquid integral area metering model according to the first parameter, the second parameter and a preset linear model V=aH+b;

[0125] Among them, m i is the mass of the preset calibration solution of group i, ρ i is the density of the preset calibration solution of group i, H i is the liquid level height of the preset calibration liquid of group i, V i is the volume of the preset calibration liquid of the i-th group, i is the group number, a is the first parameter, b is the second parameter, and n is the total number of groups.

[0126] Optionally, determining a radioactive material liquid integral area metering model according to the first parameter, the second parameter and a preset linear model V=aH+b includes:

[0127] Determine an initial metrology model according to the first parameter, the second parameter and a preset linear model V=aH+b;

[0128] Determining an error based on the preprocessed calibration data and the initial metrology model;

[0129] A radioactive material liquid integral area metering model is determined based on the error and the initial metering model.

[0130] Optionally, obtaining a volume measurement value of the radioactive liquid according to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model includes:

[0131] Receive liquid level data of radioactive liquid in the metering tank;

[0132] Determining a corresponding radioactive material liquid integral area metering model according to the liquid level data of the radioactive material liquid in the metering tank;

[0133] The liquid level data of the radioactive liquid in the metering tank is input into the corresponding radioactive liquid integral area metering model for measurement to obtain the volume measurement value of the radioactive liquid.

[0134] It should be noted that the device is a device corresponding to the above method, and all implementations in the above method embodiment are applicable to the embodiment of the device and can achieve the same technical effect. This embodiment will not be repeated.

[0135] The embodiment of the present invention further provides a computing device, comprising: a processor, and a memory storing a computer program, wherein when the computer program is executed by the processor, the method described in any one of the above embodiments is executed. All implementations in the above method embodiments are applicable to the embodiments of the device, and can achieve the same technical effects. They will not be described in detail in this embodiment.

[0136] The embodiment of the present invention further provides a computer-readable storage medium on which instructions are stored. When the instructions are executed on a computer, the computer executes the method as described in any one of the above embodiments. All implementations in the above method embodiments are applicable to the embodiments of the device and can achieve the same technical effects. They will not be described in detail in this embodiment.

[0137] It should be noted that, in the above-mentioned embodiments, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the implementation of the above-mentioned embodiments is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0138] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for determining the volume of radioactive liquid in a metering tank, characterized in that: include: Obtain calibration data of the metering tank; Preprocessing the calibration data to obtain preprocessed calibration data; Determining a radioactive material liquid integral area metering model according to the pre-processed calibration data and a preset linear model; The volume measurement value of the radioactive liquid is obtained according to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model.

2. The method for determining the volume of radioactive liquid in a metering tank according to claim 1, characterized in that: Obtain calibration data for the metering tank, including: Obtain a preset volume of a preset calibration solution; The preset calibration liquids are grouped to obtain multiple groups of preset calibration liquids; the volumes of the preset calibration liquids in each group are the same; The plurality of groups of preset calibration liquids are sequentially added into the metering tank to obtain calibration data; the calibration data includes the mass, density, liquid level, liquid level pressure and temperature of the preset calibration liquids in the metering tank.

3. The method for determining the volume of radioactive liquid in a metering tank according to claim 1, characterized in that: Preprocessing the calibration data to obtain preprocessed calibration data includes: Correcting the calibration data to obtain corrected calibration data; The corrected calibration data is normalized to obtain pre-processed calibration data.

4. The method for determining the volume of radioactive liquid in a metering tank according to claim 3, characterized in that: Normalizing the corrected calibration data to obtain pre-processed calibration data includes: according to Normalizing the corrected calibration data to obtain pre-processed calibration data; Among them, X norm is the calibration data after preprocessing, X is the calibration data after correction, and X max is the maximum value of the calibration data after correction, X min is the minimum value in the corrected calibration data.

5. The method for determining the volume of radioactive liquid in a metering tank according to claim 1, characterized in that: According to the pre-processed calibration data and the preset linear model, a radioactive material liquid integral area metering model is determined, including: According to the preprocessed calibration data and Obtain the volume of the i-th group of preset calibration solutions; According to the preprocessed calibration data, and Get the first parameter and the second parameter; Determine a radioactive material liquid integral area metering model according to the first parameter, the second parameter and a preset linear model V=aH+b; Among them, m i is the mass of the preset calibration solution of group i, ρ i is the density of the preset calibration solution of group i, H i is the liquid level height of the preset calibration liquid of group i, V i is the volume of the preset calibration liquid of the i-th group, i is the group number, a is the first parameter, b is the second parameter, and n is the total number of groups.

6. The method for determining the volume of radioactive liquid in a metering tank according to claim 5, characterized in that: According to the first parameter, the second parameter and the preset linear model V=aH+b, a radioactive material liquid integral area metering model is determined, including: Determine an initial metrology model according to the first parameter, the second parameter and a preset linear model V=aH+b; Determining an error based on the preprocessed calibration data and the initial metrology model; A radioactive material liquid integral area metering model is determined based on the error and the initial metering model.

7. The method for determining the volume of radioactive liquid in a metering tank according to claim 1, characterized in that: According to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model, a volume measurement value of the radioactive liquid is obtained, including: Receive liquid level data of radioactive liquid in the metering tank; Determining a corresponding radioactive material liquid integral area metering model according to the liquid level data of the radioactive material liquid in the metering tank; The liquid level data of the radioactive liquid in the metering tank is input into the corresponding radioactive liquid integral area metering model for measurement to obtain the volume measurement value of the radioactive liquid.

8. A device for determining the volume of radioactive liquid in a metering tank, characterized in that: include: An acquisition module, used to acquire calibration data; A preprocessing module, used for preprocessing the calibration data to obtain preprocessed calibration data; A determination module, used to determine a radioactive material liquid integral area measurement model according to the preprocessed calibration data and a preset linear model; The metering module is used to obtain the volume measurement value of the radioactive liquid according to the received liquid level data of the radioactive liquid in the metering tank and the radioactive liquid integral area metering model.

9. A computing device, characterized in that include: A processor and a memory storing a computer program, wherein when the computer program is executed by the processor, the method according to any one of claims 1 to 7 is performed.

10. A computer-readable storage medium, characterized in that: Instructions are stored, and when the instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 7.

Images