Method for correcting positioning angle error of three-cock reactor core of sodium-cooled fast reactor, computer device and computer readable storage medium

Abstract

The invention relates to the field of reactor refueling control, in particular to a sodium-cooled fast reactor three-cock core positioning angle error correction method, a computer device and a computer readable storage medium. The method comprises the following steps: setting a theoretical coordinate of a to-be-positioned assembly as (X, Y) and a cock angle as (theta large, theta medium and theta small), and measuring a coordinate (X ', Y') of an actual positioning position of the cock on site to obtain a positioning deviation; selecting an OH point of which the coordinate is (X-delta X, Y-delta Y) as a target position, and solving a positioning angle set of the OH point of the target position according to a sodium-cooled fast reactor three-cock core positioning angle calculation method; and selecting a rotation angle closest to (theta large, theta middle and theta small) from the positioning angle set of the OH point as a corrected rotation angle coordinate according to the selection principle that the sum of absolute values of corresponding angle differences is minimum. According to the invention, the efficiency and accuracy of error correction are improved.

Description

Technical Field

[0001] The present invention relates to the field of reactor refueling control, and particularly to a method for correcting the core positioning angle error of a three-way plug in a sodium-cooled fast reactor, a computer device, and a computer-readable storage medium. Background Art

[0002] The in-core refueling of a sodium-cooled fast reactor is carried out in a sodium environment, and the whole process is high-temperature and airtight and invisible. The replacement of components is completed by the cooperation of a plug and a refueling machine. The plug is responsible for positioning the refueling machine directly above the position of the component to be replaced, and the refueling machine is responsible for pulling out or inserting the component. The plug is divided into three rotating parts, namely a large plug, a medium plug, and a small plug, which are arranged in a nested manner. The refueling machine is installed on the small plug. By combining the rotations of the three plugs, the refueling machine can be aligned with any position in the core. The schematic diagram of the plug positioning is shown in Figure 1 . The positioning control of the plug needs to solve the following two problems:

[0003] 1) Calculation of the plug positioning angle;

[0004] 2) Error correction in the plug positioning test;

[0005] Due to errors in equipment manufacturing, installation, etc., there is a deviation between the theoretical calculation and the actual positioning. During the plug positioning calibration, error correction needs to be performed for each positioning point, that is, adjusting θ 大 , θ 中 , θ 小 to align the refueling machine with (X, Y). Since the relationship between (X, Y) and (θ 大 , θ 中 , θ 小 ) is a complex non-linear mapping relationship, in order to correct the errors in the X and Y directions, three angles need to be considered simultaneously.

[0006] In the prior art, manual attempts are usually used for adjustment one by one. Due to the strong randomness of manual attempts, it is often difficult to take into account all aspects, and it is difficult for X and Y to converge simultaneously. Repeated adjustment of the three angles greatly affects the progress of the plug calibration. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a method for correcting the core positioning angle error of a three-way plug in a sodium-cooled fast reactor, a computer device, and a computer-readable storage medium, so as to improve the efficiency and accuracy of error correction.

[0008] The present invention provides a method for correcting the core positioning angle error of a three-way plug in a sodium-cooled fast reactor, including the following steps:

[0009] Step S1: Assume that the theoretical coordinates of the component to be positioned are (X, Y), and the plug angles are (θ 大 , θ 中 , θ 小) The coordinates (X’, Y’) of the actual positioning position of the cock are measured on-site to obtain the positioning deviation;

[0010] The positioning deviation is:

[0011] δX = X’ - X (1);

[0012] δY = Y’ - Y (2);

[0013] Step S2: Select the point O with coordinates (X - δX, Y - δY) as the target position, and solve the set of positioning angles of the target position O according to the sodium-cooled fast reactor three-cock core positioning angle calculation method; H Step S3: Select the rotation angle closest to (θ H , θ

[0014] from the set of positioning angles of point O as the corrected rotation angle coordinates, and the selection principle is that the sum of the absolute values of the corresponding angle differences is the smallest. H In a specific embodiment of the present invention, in step S2, it specifically includes: 大 中 小 all H H

[0015] Step S2-1: Discretize the large cock rotation angle according to a preset step size to generate a set of large cock rotation angles θ

[0016] ; all ;

[0017] Step S2-2: Select a determined large cock rotation angle, and determine the set R of the fuel assembly positions that can be positioned regardless of how the middle cock and the small cock rotate;

[0018] Step S2-3: Determine whether point O is within the set R. If it is not within the set R, return to step S2-2; if it is within the set R, continue with the subsequent step S2-4; H

[0019] Step S2-4: According to the rotation ranges of the middle cock and the small cock, determine the center position of the small cock that the refueling machine can align with point O, and calculate the rotation angle of the small cock and the rotation angle of the middle cock based on the center position of the small cock; H

[0020]

[0021] Step S2-5: Traverse the set of large cock rotation angles θ all , for each large cock rotation angle θ 大 , repeat steps S2-2 to S2-4, that is, obtain the complete solution set of the positioning angles of point O. H ;

[0021] In a specific embodiment of the present invention, in the step S2-1, the rotation range of the large cock is -180° to +180°, and the step size is 0.01 to 0.1°.

[0022] In a specific embodiment of the present invention, in the step S2-2, the set R of the positions of the fuel assemblies can only be located in the annular region, and the center of the annular region is the center O of the middle cock. 中 , the radius of the inner circle of the ring is (L2 - L3), and the radius of the outer circle of the ring is (L2 + L3);

[0023] The L1 is the distance between the center O of the large cock 大 and the center O of the middle cock 中 The L2 is the distance between the center O of the middle cock 中 and the center O of the small cock 小 The L3 is the distance between the center O of the small cock 小 and the point O H .

[0024] In a specific embodiment of the present invention, in the step S2-3, taking the position of the selected fuel assembly as the target, the set of the positions of the centers of the small cocks that meet the requirements is a circle C1 with O H as the center and a radius of L3;

[0025] The small cock is driven by the middle cock to rotate, and the actual trajectory of the small cock is a circle C2 with the center O of the middle cock 中 as the center and a radius of L2. The intersection points O 小 and O T of the circle C1 and the circle C2 are the center positions of the small cocks that meet the conditions.

[0026] In a specific embodiment of the present invention, if the center of the small cock is located at O 小 , the calculation method of the rotation angle of the small cock and the rotation angle of the middle cock is as follows:

[0027] |O H O 小 | = L3 (4)

[0028] |O 中 O 小 | = |O 中 K| = L2 (5)

[0029] |O H O 中 | = ((X - cos(θ 大 )) * L1) 2 + (Y - sin(θ 大 )) * L1) 2 ) 1 / 2 (6)

[0030] |O H |K| = ((X - cos(θ 大 )) * (L1 + L2)) 2 + (Y - sin(θ 大 )) * (L1 + L2)) 2 ) 1 / 2 (7)

[0032] In triangle O 中 O 小 O H ,

[0033] θ 小 = arccos((|O 中 O 小 | 2 + |O H O 小 | 2 - |O H O 中 | 2 ) / (2 * |O 中 O 小 | * |O H O 小 |)) (8)

[0035] α1 = arccos((|O 中 O 小 | 2 + |O H O 中 | 2 - |O H O 小 | 2 ) / (2 * |O 中 O 小 | * |O H O 中 |)) (9)

[0037] In triangle O 中 KO H ,

[0038] α0 = arccos((|O 中 K| 2 + |O H O 中 | 2 - |O H K| 2 ) / (2 * |O 中 K| * |O H O 中 |)) (10)

[0040] θ中 = α0 - α1 (11)

[0041] According to equations (11) and (9), θ is obtained 中 and θ 小 , because θ 大 is known, thus the fuel assembly O with coordinates (X, Y) is obtained H a set of positioning angles (θ 大 , θ 中 , θ 小 );

[0042] Point K is the intersection of the line connecting O 大 and O 中 with circle C2.

[0043] In a specific embodiment of the present invention, in step S2-3, the quadrants and signs of each angle also need to be considered. By rotating the middle plug and the small plug, the 0-degree rotation is aligned with the positive X-axis direction. Only the quadrant positions of O 小 , O H after transformation in the rectangular coordinate system need to be considered, specifically including:

[0044] When solving the rotation angle of the middle plug, O 小 is rotated with O 大 as the center and an angle of -θ 大 . In the rectangular coordinate system with O 大 as the origin, if O 小 is above the X-axis, the sign is positive; if it is below the X-axis, the sign is negative.

[0045] When solving the rotation angle of the small plug, O H is rotated with O 大 as the center and an angle of -θ 大 , and then rotated with O 中 as the center and an angle of -θ 中 . In the rectangular coordinate system with O 中 as the origin, if O H is above the X-axis, the sign is negative; if it is below the X-axis, the sign is positive.

[0046] The present invention provides a computer device, including: a processor for executing the sodium-cooled fast reactor three-plug core positioning angle error correction method described in the above technical solution; and

[0047] a memory for storing the executable instructions of the processor.

[0048] In a specific embodiment of the present invention, the processor is further configured to execute the sodium-cooled fast reactor three-plug core positioning angle calculation method.

[0049] The present invention provides a computer-readable storage medium, on which executable instructions of a computer are stored, and when the executable instructions are executed by a processor, the sodium-cooled fast reactor three-plug core positioning angle error correction method described above is implemented.

[0050] Compared with the prior art, the sodium-cooled fast reactor three-plug core positioning angle error correction method of the present invention has the following beneficial effects:

[0051] (1) The automation of plug positioning error correction is realized, the problem that it is difficult to converge the deviation by manual adjustment and repeated attempts is solved, and the calibration speed is greatly improved. Practical applications show that the correction time for each point can be shortened to 1 / 3 of the original. For a job with thousands of points, the construction period can be about 190 hours or more; at the same time, for the results of automatic correction, the residual error is smaller than that of manual attempts, that is, the correction quality is improved;

[0052] (2) By using the fast calculation of the complete solution set of the rotation angles of the three-plug positioning system, compared with the conventional method based on symbolic operation systems and iterative approximation, the calculation speed is greatly improved, making the software developed based on this method have practical value on personal computers. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It shows a schematic diagram of the three-plug core positioning of a sodium-cooled fast reactor;

[0054] Figure 2 It shows the geometric constraint relationship of the plug positioning range under the condition that the angle of the large plug is fixed;

[0055] Figure 3 It shows θ 大 Under the determined conditions of θ 中 、θ 小 Geometric solution schematic diagram. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0056] In order to further understand the present invention, the implementation scheme of the present invention will be described below in conjunction with embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present invention, rather than a limitation on the present invention.

[0057] The sodium-cooled fast reactor three-plug core positioning angle error correction method of the present invention is based on the principle of approximate invariance of local errors.

[0058] An embodiment of the present invention discloses a sodium-cooled fast reactor three-plug core positioning angle error correction method, including the following steps:

[0059] Step S1: Assume that the theoretical coordinates of the component to be positioned are (X, Y), and the plug angles are (θ 大 , θ 中 , θ 小) Measure the coordinates (X’, Y’) of the actual positioning position of the plug on-site to obtain the positioning deviation.

[0060] The positioning deviation is:

[0061] δX = X’ - X (1);

[0062] δY = Y‘ - Y (2);

[0063] The plug angle refers to the angles corresponding to the three plugs when refueling the fuel assembly.

[0064] As Figure 1 shown, assuming the coordinates of the core assembly in the rectangular coordinate system are (X, Y), and the origin of this coordinate system is O 大 then the rotation angles θ 大 , θ 中 , θ 小 of the three plugs to be positioned to (X, Y) should satisfy the following relationship:

[0065]

[0066] In the formula, L1 is the distance between the center O 大 of the large plug and the center O 中 of the medium plug, L2 is the distance between the center O 中 of the medium plug and the center O 小 of the small plug, and L3 is the distance between the center O 小 of the small plug and the center O H of the refueling machine.

[0067] When positioning to the same point, if different positioning angles are selected, the positioning errors are different and it is difficult to find a pattern, which is a difficulty for error correction; however, if the positioning angle only changes slightly, then within the local range of the current positioning angle, the positioning error of the plug can be approximately considered unchanged. On this premise, set the target position as (X - δX, Y - δY), and find a set of rotation angles close to (θ 大 , θ 中 , θ 小 ), then the plug should be exactly positioned to (X, Y) at this time. Therefore, for the position (X, Y), it is necessary to solve the solution set of the point (X - δX, Y - δY) in the next step, that is, to solve the solution set when the coordinates of O H are at (X - δX, Y - δY). For convenience, O H is used to replace the point (X - δX, Y - δY) in the following text.

[0068] Step S2: Select the O H point as the target position, and solve the positioning angle set of the O H point according to the sodium-cooled fast reactor three-plug core positioning angle calculation method;

[0069] The calculation method for the positioning angle of the three-way plug in the sodium-cooled fast reactor core specifically includes:

[0070] Step S2-1: Discretize the rotation angle of the large plug according to a preset step size to generate a set of large plug rotation angles θ all ;

[0071] The rotation range of the large plug is from -180° to +180°, and the step size is 0.01 - 0.1°.

[0072] For example, with a step of 0.1 degree each, generate a set of large plug rotation angles θ all = [-180 -179.9…-0.1 0 0.1…179.9 180];

[0073] Step S2-2: Select a definite rotation angle of the large plug. The selected rotation angle of the large plug θ 大 ∈θ all , on the basis of determining the rotation angle of the large plug, no matter how the middle plug and the small plug rotate, the positions of the fuel assemblies that can be positioned can only be located in Figure 2 the annular region R, and the center of the annular region is the center O 中 of the middle plug, the radius of the inner circle of the ring is (L2 - L3), and the radius of the outer circle of the ring is (L2 + L3);

[0074] The L1 is the distance between the center O 大 of the large plug and the center O 中 of the middle plug, L2 is the distance between the center O 中 of the middle plug and the center O 小 of the small plug, and L3 is the distance between the center O 小 of the small plug and the point O H .

[0075] The point O H is also the center position of the final refueling machine.

[0076] Step S2-3: Judge whether the point O H is within the set R. If it is not within the set R, then return to Step S2-2; if it is within the set R, then continue with the subsequent Step S2-4;

[0077] Step S2-4: According to the rotation ranges of the middle plug and the small plug, determine the position of the center of the small plug that the refueling machine can align with O H , and calculate the rotation angle of the small plug and the rotation angle of the middle plug based on the position of the center of the small plug;

[0078] Specifically, taking the point O H as the target, the set of positions of the center of the small plug that meets the requirements is a circle C1 with O H as the center and a radius of L3;

[0079] The small cock rotates with the middle cock, and the actual trajectory of the small cock is a circle C2 with the center O of the middle cock 中 as the center and a radius of L2. The intersection points O 小 and O T of circle C1 and circle C2 are the central positions of the small cock that meet the conditions. See Figure 3 .

[0080] If the center of the small cock is located at O 小 , the calculation method for the rotation angle of the small cock and the rotation angle of the middle cock is as follows:

[0081] |O H O 小 | = L3 (4)

[0082] |O 中 O 小 | = |O 中 K| = L2 (5)

[0083] |O H O 中 | = ((X - cos(θ 大 )) * L1) 2 + (Y - sin(θ 大 )) * L1) 2 ) 1 / 2 (6)

[0084] |O H K| = ((X - cos(θ 大 )) * (L1 + L2)) 2 + (Y - sin(θ 大 )) * (L1 + L2)) 2 ) 1 / 2 (7)

[0086] In triangle O 中 O 小 O H ,

[0087] θ 小 = arccos((|O 中 O 小 | 2 + |O H O 小 | 2 - |O H O 中 | 2 ) / (2 * |O 中 O 小 | * |O H O 小 |)) (8)

[0089] α1 = arccos((|O 中 O 小 | 2 + |O H O 中 | 2 - |O H O 小 | 2 ) / (2 * |O 中 O 小 | * |O H O 中 |)) (9)

[0091] In triangle O 中 KO H ,

[0092] α0 = arccos((|O 中 K| 2 + |O H O 中 | 2 - |O H K| 2 ) / (2 * |O 中 K| * |O H O 中 |)) (10)

[0094] θ 中 = α0 - α1 (11)

[0095] According to equations (11) and (8), θ 中 and θ 小 are obtained. Since θ 大 is known, a set of positioning angles (θ H , θ 大 , θ 中 , θ 小 ) of the fuel assembly O with coordinates (X, Y) are obtained;

[0096] Point K is the intersection of the line connecting O 大 and O 中 with circle C2.

[0097] If the center of the small cock is located at O T , the calculation method for the rotation angle of the small cock and the rotation angle of the middle cock is as follows:

[0098] |O H O T | = L3 (12)

[0099] |O 中 O T | = |O 中K| = L2 (13)

[0100] |O H O 中 | = ((X - cos(θ 大 ) * L1) 2 + (Y - sin(θ 大 ) * L1) 2 ) 1 / 2 (6)

[0101] |O H K| = ((X - cos(θ 大 ) * (L1 + L2)) 2 + (Y - sin(θ 大 ) * (L1 + L2)) 2 ) 1 / 2 (7)

[0103] Triangle O 中 O T O H In

[0104] θ 小 = arccos((|O 中 O T | 2 + |O H O T | 2 - |O H O 中 | 2 ) / (2 * |O 中 O T | * |O H O T |)) (14)

[0106] α1 = arccos((|O 中 O T | 2 + |O H O 中 | 2 - |O H O T | 2 ) / (2 * |O 中 O T | * |O H O 中 |)) (15)

[0108] Triangle O 中 KO H In

[0109] α0 = arccos((|O 中 K|2 +|O H O 中 | 2 -|O H K| 2 ) / (2*|O 中 K|*|O H O 中 |)) (10)

[0111] From the above, it can be obtained that:

[0112] θ 中 = ∠O T O 中 K = α0 + α1 (16)

[0113] In actual calculation, the quadrant and sign of each angle also need to be considered. By rotating the 0 degrees of the middle cock and the small cock to the positive direction of the X-axis through rotation transformation, only the quadrant position of O 小 、O H after transformation in the rectangular coordinate system needs to be considered. Specifically, it includes:

[0114] When solving the rotation angle of the middle cock, rotate O 小 with O 大 as the center and an angle of -θ 大 . In the rectangular coordinate system with O 大 as the origin, if O 小 is above the X-axis, the sign is positive; if it is below the X-axis, the sign is negative.

[0115] When solving the rotation angle of the small cock, rotate O H with O 大 as the center and an angle of -θ 大 , and then rotate it with O 中 as the center and an angle of -θ 中 . In the rectangular coordinate system with O 中 as the origin, if O H is above the X-axis, the sign is negative; if it is below the X-axis, the sign is positive.

[0116] Step S2-5: Traverse the set of rotation angles θ all of the large cock. For each rotation angle θ 大 of the large cock, repeat steps S2-2 to S2-4, and the complete solution set of the positioning angle of point O H can be obtained.

[0117] Step S3: Select from the set of positioning angles of O H点 the one that is the same as (θ 大 , θ 中 , θ 小)The closest corner is used as the corrected corner coordinate, and the selection principle is that the sum of the absolute values of the corresponding angular differences is the smallest.

[0118] An embodiment of the present invention also provides a computer device, including: a processor for executing the method for correcting the angular error of the sodium-cooled fast reactor three-way plug core positioning;

[0119] The processor is also used to execute the method for calculating the angular positioning of the sodium-cooled fast reactor three-way plug core; to ensure the calculation speed, the main calculations are implemented using matrix operations.

[0120] And

[0121] a memory for storing the executable instructions of the processor.

[0122] An embodiment of the present invention also provides a computer-readable storage medium, on which executable instructions of a computer are stored, and when the executable instructions are executed by a processor, the method for correcting the angular error of the sodium-cooled fast reactor three-way plug core positioning is implemented.

[0123] The actual positioning deviation of the plug is measured on-site. After inputting the current angle and the positioning deviation into the software, the software calculates the solution set of the positioning angles at the corrected positions in real time, and automatically selects the corrected positioning angle according to the principle that the corrected angle is closest to the current angle. This software can iteratively correct. If the deviation is unqualified after one correction, it can be corrected again. In theory, the error can approach 0. After actual verification, the error after one correction is less than 1 mm.

[0124] The software developed by the present invention with functions of automatic calculation of the plug positioning angle, simulation of the positioning process, and automatic calculation of error correction solves the problems of positioning angle calculation, correction, and optimization control during the debugging and operation of the sodium-cooled fast reactor plug.

[0125] The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0126] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug reactor, characterized in that: The following steps are involved: Step S1: Assume the theoretical coordinates of the component to be positioned are (X, Y), and the cock angle is (θ 大 ,θ 中 ,θ 小 ), measure the coordinates (X', Y') of the actual positioning position of the plug on site to obtain the positioning deviation; The positioning deviation is: δX=X′-X (1); δY=Y'-Y (2); Step S2: Select O with coordinates (X-δX, Y-δY) H Point is the target position, and the target position O is solved according to the calculation method of the three-plug core positioning angle of the sodium-cooled fast reactor. H The set of positioning angles of the points; Step S3: From O H Select the point from the set of positioning angles that matches (θ 大 ,θ 中 ,θ 小 ) is used as the corrected rotation angle coordinate, and the selection principle is that the sum of the absolute values ​​of the corresponding angle differences is the smallest.

2. The method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug reactor according to claim 1, characterized in that: The step S2 specifically includes: Step S2-1: discretize the large plug angle according to the preset step size to generate a large plug angle set θ all ; Step S2-2: Select a certain large cock rotation angle, and determine a set R of fuel assembly positions that can be located by the middle cock and the small cock regardless of how they are rotated; Step S2-3: Determine O H Whether the point is in the set R, if not, return to step S2-2; if it is in the set R, continue to the subsequent step S2-4; Step S2-4: Determine whether the material changer can align with O according to the rotation range of the middle and small cocks. H The center position of the small cock at the point is determined, and the small cock rotation angle and the middle cock rotation angle are calculated based on the center position of the small cock; Step S2-5: Traverse the large plug rotation angle set θ all , for each large plug angle θ 大 , repeat steps S2-2 to S2-4 to obtain O H The complete solution set for the point location angle.

3. The method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug reactor according to claim 2, characterized in that: In step S2-1, the rotation range of the large stopcock is from -180° to +180°, and the step length is 0.01 to 0.1°.

4. The method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug reactor according to claim 2, characterized in that: In step S2-2, the set R of fuel assembly positions can only be located in an annular area, and the center of the annular area is the center of the middle plug O. 中 , the radius of the inner circle of the ring is (L2-L3), and the radius of the outer circle of the ring is (L2+L3); The L1 is the center of the large plug O 大 and the center of the middle plug O 中 The distance L2 is the center of the middle plug O 中 and the center of the small stopcock O 小 The distance L3 is the center of the small stopcock O 小 and O H The distance of the point.

5. The method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug reactor according to claim 2, characterized in that: In step S2-3, the position of the selected fuel assembly is taken as the target, and the position set of the center of the small cock that meets the requirement is O H is a circle C1 with a center and a radius of L3; The small cock is rotated by the middle cock, and the actual trajectory of the small cock is centered on the middle cock. 中 The center of the circle is C2, the radius is L2, and the intersection point O of the circle C1 and the circle C2 is 小 and O T That is the center position of the small stopcock that meets the conditions.

6. The method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug reactor according to claim 5, characterized in that: If the center of the small cock is located at O 小 , the calculation method of the small cock angle and the middle cock angle is: |About H ABOUT 小 |=L3 (4) |Or 中 EITHER 小 |=|Or 中 K|=L2 (5) |Or H EITHER 中 |=((X-cos(θ 大 )*L1) 2 +(Y-sin(θ 大 )*L1) 2 ) 1 / 2 (6) |Or H K|=((X-cos(θ 大 )*(L1+L2)) 2 +(Y-sin(θ 大 )*(L1+L2)) 2 ) 1 / 2 (7) Triangle O 中 O 小 O H middle, θ 小 =arccos((|The 中 THE 小 | 2 +|O H THE 小 | 2 -|The H THE 中 | 2 ) / (2*|The 中 THE 小 |*|The H THE 小 |)) (8) α1=arccos((|O 中 THE 小 | 2 +|O H THE 中 | 2 -|The H THE 小 | 2 ) / (2*|The 中 THE 小 |*|The H THE 中 |)) (9) triangle O 中 KO H Inside, α0=arccos((|O 中 K| 2 +|O H THE 中 | 2 -|The H K| 2 ) / (2*|The 中 K|*|O H THE 中 |)) (10) i 中 =α0-α1 (11) According to equations (11) and (9), we can obtain θ 中 and θ 小 , because θ 大 is known, so the fuel assembly O with coordinates (X, Y) is obtained H A set of positioning angles (θ 大 ,θ 中 ,θ 小 ); K point is O 大 With O 中 The intersection of the line connecting and circle C2.

7. The method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug reactor according to claim 2, characterized in that: In step S2-3, the quadrant and sign of each angle also need to be considered. The 0 degree of the middle and small cocks are rotated to the positive direction of the X axis by rotation transformation, and only the 0 degree of the middle and small cocks are considered. 小 , O H The quadrant position in the rectangular coordinate system after transformation is sufficient, including: When solving the rotation angle of the middle plug, O 小 O 大 The center is -θ. 大 Rotation transformation. 大 In a rectangular coordinate system with O as the origin, if 小 If it is above the X-axis, the sign is positive; if it is below the X-axis, the sign is negative. When solving the small cock angle, O H O 大 The center is -θ. 大 Rotation transformation, then O 中 The center is -θ. 中 Rotation transformation. 中 In a rectangular coordinate system with O as the origin, if H If it is above the X-axis, the sign is negative; if it is below the X-axis, the sign is positive.

8. A computer device, characterized in that: include: A processor, configured to execute the method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug according to any one of claims 1 to 7; as well as A memory is used to store executable instructions of the processor.

9. The computer device according to claim 8, characterized in that The processor is also used to execute the method for calculating the core positioning angle of a sodium-cooled fast reactor three-plug according to any one of claims 2 to 7.

10. A computer-readable storage medium having computer executable instructions stored thereon, characterized in that: When the executable instructions are executed by the processor, the method for correcting the core positioning angle error of a sodium-cooled fast reactor three-plug according to any one of claims 1 to 7 is implemented.

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