A verification bench and method for a reprocessing plant feed metering system

Abstract

A kind of verification bench for post-treatment plant feed liquid metering system, including feed liquid volume calibration delivery pipe, there is manual stop valve A, manual stop valve D on feed liquid volume calibration delivery pipe, between manual stop valve A and manual stop valve D, connect the feed tank outlet pipe, the upper end of feed tank outlet pipe is connected with feed tank, and the upper end of feed tank is connected with feed liquid input pipe.There is electric regulating valve A on the left side of manual stop valve A on feed liquid volume calibration delivery pipe, and there is manual stop valve B on the left side of electric regulating valve A;There is electric regulating valve C on the right side of manual stop valve D on feed liquid volume calibration delivery pipe, and there is manual stop valve E on the left side of electric regulating valve C.

Description

Technical Field

[0001] This invention relates to spent fuel reprocessing technology, and more specifically to a verification bench and method for a feed liquid metering system in a reprocessing plant. Background Technology

[0002] 1AF feed liquid is the nuclear material solution remaining after spent fuel undergoes shearing, dissolution, filtration, and conditioning in the reprocessing plant. It is the final point of entry for nuclear material into the chemical separation system of the reprocessing plant. Accurate metering of 1AF feed liquid is a crucial step in material balance calculations at the spent fuel reprocessing plant. Its core lies in establishing a measurement equation relating the volume and height of the liquid within the metering tank.

[0003] With the gradual development of my country's post-processing capabilities and the continuous improvement of the production scale of post-processing plants, research on precise metering technology for 1AF feed metering tanks of different volume types will continue. Typically, the establishment of measurement equations during the research and design phase of a precise metering system requires calibration test data from a calibration device. Furthermore, due to the high metering accuracy and numerous influencing factors during calibration, the influencing factors can be studied on a calibration test device used for engineering application verification, thereby correcting the measurement equations. Therefore, it is necessary to conduct in-depth research on establishing a calibration device for engineering application verification of the 1AF feed precise metering system during the research phase. This invention provides a construction idea and setup method for a calibration device for engineering application verification of the 1AF feed precise metering system in a post-processing plant. Summary of the Invention

[0004] The purpose of this invention is to provide a verification bench for engineering applications of a precise metering system for liquid feed in post-processing plants, for conducting research on precision metering technology for 1AF liquid feed metering tanks of different volume types.

[0005] The technical solution of the present invention is as follows: A verification bench for a liquid metering system in a post-processing plant includes a liquid volume calibration conveying pipe, a manual shut-off valve A and a manual shut-off valve D on the liquid volume calibration conveying pipe, a feed trough outlet pipe connected between the manual shut-off valve A and the manual shut-off valve D, the upper end of the feed trough outlet pipe being connected to the feed trough, and the upper end of the feed trough being connected to the liquid input pipe.

[0006] There is an electric regulating valve A to the left of the manual shut-off valve A on the liquid volume calibration and delivery pipe, and a manual shut-off valve B to the left of the electric regulating valve A; there is an electric regulating valve C to the right of the manual shut-off valve D on the liquid volume calibration and delivery pipe, and a manual shut-off valve E to the left of the electric regulating valve C.

[0007] The left end of the liquid volume calibration conveying pipe is connected to calibration tank A. The upper end of calibration tank A is connected to the overflow pipe of calibration tank A, and the lower end is connected to the discharge pipe of calibration tank A. There is a manual shut-off valve C on the discharge pipe of calibration tank A. Below the manual shut-off valve C is an electric regulating valve B. The lower end of the discharge pipe of calibration tank A is suspended and connected to the upper opening of weighing tank A. Weighing tank A is located on the weighing plane of electronic scale A. The lower end of weighing tank A is connected to the discharge pipe of weighing tank A. There is a manual ball valve A on the discharge pipe of weighing tank A.

[0008] The right end of the liquid volume calibration delivery pipe is connected to calibration tank B. The upper end of calibration tank B is connected to the overflow pipe of calibration tank B, and the lower end is connected to the discharge pipe of calibration tank B. There is a manual shut-off valve F on the discharge pipe of calibration tank B, and an electric regulating valve D below the manual shut-off valve F. The lower end of the discharge pipe of calibration tank B is suspended and connected to the upper opening of weighing tank B. Weighing tank B is located on the weighing plane of electronic scale B. The lower end of weighing tank B is welded to the discharge pipe of weighing tank B, and there is a manual ball valve B on the discharge pipe of weighing tank B.

[0009] It also includes a metering tank inlet pipe, the left end of which is connected to funnel A, and the upper part of funnel A is suspended and connected to the discharge pipe of weighing tank A; the right end of the metering tank inlet pipe is welded to funnel B, and the upper part of funnel B is suspended and connected to the discharge pipe of weighing tank B; the lower part of the metering tank inlet pipe is welded to the upper end of the metering tank.

[0010] The upper end of the feed trough discharge pipe is welded to the feed trough, and the upper end of the feed trough is welded to the liquid input pipe.

[0011] The left end of the liquid volume calibration conveying pipe is welded to calibration tank A, the upper end of calibration tank A is welded to the overflow pipe of calibration tank A, and the lower end is welded to the discharge pipe of calibration tank A.

[0012] The lower end of weighing tank A is welded to the discharge pipe of weighing tank A.

[0013] The right end of the liquid volume calibration conveying pipe is welded to calibration tank B, the upper end of calibration tank B is welded to the overflow pipe of calibration tank B, and the lower end is welded to the discharge pipe of calibration tank B.

[0014] The left end of the metering tank feed pipe is welded to funnel A.

[0015] A validation method for a liquid metering system in a post-treatment plant includes the following steps:

[0016] Includes the following steps:

[0017] S1: Close all valves and deliver the calibration solution to the feed tank through the feed inlet pipe;

[0018] S2: Record the readings of electronic scale A and electronic scale B when no calibration liquid is added, i.e. the mass of weighing tank A and weighing tank B;

[0019] S3: Determine the calibration increment and select calibration tank A;

[0020] S4: Open manual shut-off valve A, electric regulating valve A and manual regulating valve B;

[0021] S5: When the calibration liquid flows out of the overflow pipe of calibration tank A, adjust the electric regulating valve B to make the calibration liquid in calibration tank A8 slowly reach the calibration volume until the calibration liquid flowing out of the overflow pipe of calibration tank A is stable, then close the manual regulating valve B, the electric regulating valve A and the manual shut-off valve A.

[0022] S6: Open the manual shut-off valve C and the electric regulating valve B, and adjust the electric regulating valve B to pour all the calibration liquid in calibration tank A into weighing tank A, and ensure that the liquid level is stable.

[0023] S7: Close the manual shut-off valve C and the electric regulating valve B;

[0024] S8: Repeat S3 and S4 to replenish the standard volume of calibration solution for later use;

[0025] S9: Record the reading of electronic scale A after it stabilizes;

[0026] S10: Open the electric ball valve A to add the calibration liquid into the metering tank.

[0027] S11: After the calibration liquid in weighing tank A is emptied, close the electric ball valve A;

[0028] S12: Record the reading of electronic scale A, i.e., the tare weight of the weighing tank.

[0029] It also includes S13: After the liquid level in the metering tank stabilizes, record the liquid level pressure difference response value and the corresponding temperature value in the metering tank.

[0030] It also includes S14: cyclic operation to achieve continuous calibration.

[0031] The advantages of this invention are as follows: accurate calibration is an important way to ensure that the 1AF metering cell achieves precise measurement. The device of this invention can realize continuous volume-mass measurement, accurately receive the incremental volume of the calibration liquid, and avoid disturbance errors caused by liquid bubbles and pressure impacts, thereby reducing interference errors in mass weighing and ensuring the accuracy of calibration. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the verification bench for the liquid metering system used in the post-processing plant according to the present invention.

[0033] In the diagram: 1-Liquid input pipe; 2-Feeding trough; 3-Feeding trough discharge pipe; 4-Manual shut-off valve A; 5-Electric regulating valve A; 6-Manual shut-off valve B; 7-Liquid volume calibration conveying pipe; 8-Calibration tank A; 9-Calibration tank A overflow pipe; 10-Calibration tank A discharge pipe; 11-Manual shut-off valve C; 12-Electric regulating valve B; 13-Weighing tank A; 14-Weighing tank A discharge pipe; 15-Electronic scale A; 16-Manual ball valve A; 17—Function funnel A; 18—Metering tank inlet pipe; 19—Metering tank; 20—Manual shut-off valve D; 21—Electric regulating valve C; 22—Manual shut-off valve E; 23—Calibration tank B; 24—Calibration pipe B overflow pipe; 25—Calibration tank B discharge pipe; 26—Manual shut-off valve F; 27—Electric regulating valve D; 28—Weighing tank B; 29—Weighing tank B discharge pipe; 30—Electronic scale B; 31—Manual ball valve B; 32—Function funnel B. Detailed Implementation

[0034] A verification bench for a liquid metering system in a post-processing plant;

[0035] It includes a liquid volume calibration and conveying pipe 7, on which there are manual shut-off valves A4 and D20. The manual shut-off valves A4 and D20 are connected to the feed trough outlet pipe 3. The upper end of the feed trough outlet pipe 3 is welded to the feed trough 2, and the upper end of the feed trough 2 is welded to the liquid input pipe 1.

[0036] There is an electric regulating valve A5 to the left of the manual shut-off valve A4 on the liquid volume calibration conveying pipe 7, and a manual shut-off valve B6 to the left of the electric regulating valve A5; there is an electric regulating valve C21 to the right of the manual shut-off valve D20 on the liquid volume calibration conveying pipe 7, and a manual shut-off valve E22 to the left of the electric regulating valve C21.

[0037] The left end of the liquid volume calibration conveying pipe 7 is welded to the calibration tank A8. The upper end of the calibration tank A8 is welded to the overflow pipe 9 of the calibration tank A, and the lower end is welded to the discharge pipe 10 of the calibration tank A. The discharge pipe 10 of the calibration tank A has a manual shut-off valve C11. Below the manual shut-off valve C11 is an electric regulating valve B12. The lower end of the discharge pipe 10 of the calibration tank A is suspended and connected to the upper opening of the weighing tank A13. The weighing tank A13 is located on the weighing plane of the electronic scale A15. The lower end of the weighing tank A13 is welded to the discharge pipe 14 of the weighing tank A. The discharge pipe 14 of the weighing tank A has a manual ball valve A16.

[0038] The right end of the liquid volume calibration conveying pipe 7 is welded to the calibration tank B23. The upper end of the calibration tank B23 is welded to the overflow pipe 24 of the calibration tank B, and the lower end is welded to the discharge pipe 25 of the calibration tank B. There is a manual shut-off valve F26 on the discharge pipe 25 of the calibration tank B. There is an electric regulating valve D27 below the manual shut-off valve F26. The lower end of the discharge pipe 25 of the calibration tank B is suspended and connected to the upper opening of the weighing tank B28. The weighing tank B28 is located on the weighing plane of the electronic scale B30. The lower end of the weighing tank B28 is welded to the discharge pipe 29 of the weighing tank B. There is a manual ball valve B31 on the discharge pipe 29 of the weighing tank B.

[0039] It also includes a metering tank inlet pipe 18, the left end of which is welded to a funnel A17, and the upper part of the funnel A17 is suspended and connected to the discharge pipe 14 of the weighing tank A; the right end of the metering tank inlet pipe 18 is welded to a funnel B32, and the upper part of the funnel B32 is suspended and connected to the discharge pipe 29 of the weighing tank B; the lower part of the metering tank inlet pipe 18 is welded to the upper end of the metering tank 19.

[0040] A method for engineering application verification and calibration of a 1AF feed liquid precision metering system for a post-treatment plant includes the following steps:

[0041] S1: Close all valves and deliver the calibration solution to the feed tank 2 through the feed inlet pipe 1;

[0042] S2: Record the readings of electronic scales A15 and B30 when no calibration liquid is added, i.e. the mass of weighing tanks A13 and B28;

[0043] S3: Determine the calibration increment and select calibration tank A8;

[0044] S4: Open manual shut-off valve A4, electric regulating valve A5 and manual regulating valve B6;

[0045] S5: When the calibration liquid flows out of the overflow pipe 9 of calibration tank A, adjust the electric regulating valve B5 so that the calibration liquid in calibration tank A8 slowly reaches the calibration volume until the calibration liquid flows out of the overflow pipe 9 of calibration tank A and stabilizes. Then close the manual regulating valve B6, the electric regulating valve A5 and the manual shut-off valve A4.

[0046] S6: Open the manual shut-off valve C11 and the electric regulating valve B12, and adjust the electric regulating valve B12 to pour all the calibration liquid in the calibration tank A8 into the weighing tank A13, and ensure that the liquid level is stable.

[0047] S7: Close the manual shut-off valve C11 and the electric regulating valve B12;

[0048] S8: Repeat S3 and S4 to replenish the standard volume of calibration solution for later use;

[0049] S9: Record the reading of electronic scale A15 after it stabilizes;

[0050] S10: Open the electric ball valve A16 to add the calibration liquid to the metering tank 19.

[0051] S11: After the calibration liquid in weighing tank A13 is emptied, close the electric ball valve A16;

[0052] S12: Record the reading of electronic scale A15, i.e., the tare weight of weighing tank 13.

[0053] S13: After the liquid level in the metering tank stabilizes, record the liquid level pressure difference response value and the corresponding temperature value in the metering tank.

[0054] S14: Continuous calibration is achieved through cyclic operation.

Claims

1. A verification bench for a liquid metering system in a post-processing plant, characterized in that: Includes a liquid volume calibration conveying pipe (7), on which there are manual shut-off valves A (4) and D (20), between which the manual shut-off valves A (4) and D (20) are connected a feed trough outlet pipe (3), the upper end of the feed trough outlet pipe (3) is connected to the feed trough (2), and the upper end of the feed trough (2) is connected to the liquid input pipe (1); On the left side of the manual shut-off valve A (4) on the liquid volume calibration conveying pipe (7), there is an electric regulating valve A (5), and on the left side of the electric regulating valve A (5), there is a manual shut-off valve B (6); on the right side of the manual shut-off valve D (20) on the liquid volume calibration conveying pipe (7), there is an electric regulating valve C (21), and on the left side of the electric regulating valve C (21), there is a manual shut-off valve E (22). The left end of the liquid volume calibration conveying pipe (7) is connected to the calibration tank A (8). The upper end of the calibration tank A (8) is connected to the overflow pipe (9) of the calibration tank A, and the lower end is connected to the discharge pipe (10) of the calibration tank A. There is a manual shut-off valve C (11) on the discharge pipe (10) of the calibration tank A. There is an electric regulating valve B (12) below the manual shut-off valve C (11). The lower end of the discharge pipe (10) of the calibration tank A is suspended and connected to the upper opening of the weighing tank A (13). The weighing tank A (13) is located on the weighing plane of the electronic scale A (15). The lower end of the weighing tank A (13) is connected to the discharge pipe (14) of the weighing tank A. There is a manual ball valve A (16) on the discharge pipe (14) of the weighing tank A. The right end of the liquid volume calibration conveying pipe (7) is connected to the calibration tank B (23). The upper end of the calibration tank B (23) is connected to the overflow pipe (24) of the calibration tank B, and the lower end is connected to the discharge pipe (25) of the calibration tank B. There is a manual shut-off valve F (26) on the discharge pipe (25) of the calibration tank B. There is an electric regulating valve D (27) below the manual shut-off valve F (26). The lower end of the discharge pipe (25) of the calibration tank B is suspended and connected to the upper opening of the weighing tank B (28). The weighing tank B (28) is located on the weighing plane of the electronic scale B (30). The lower end of the weighing tank B (28) is welded to the discharge pipe (29) of the weighing tank B. There is a manual ball valve B (31) on the discharge pipe (29) of the weighing tank B. It also includes a metering tank feed pipe (18), the left end of which is connected to funnel A (17), and the upper part of funnel A (17) is suspended and connected to the discharge pipe (14) of weighing tank A; the right end of the metering tank feed pipe (18) is welded to funnel B (32), and the upper part of funnel B (32) is suspended and connected to the discharge pipe (29) of weighing tank B; the lower part of the metering tank feed pipe (18) is welded to the upper end of the metering tank (19).

2. The verification bench for a liquid metering system in a post-processing plant according to claim 1, characterized in that: The upper end of the feed trough discharge pipe (3) is welded to the feed trough (2), and the upper end of the feed trough (2) is welded to the liquid input pipe (1).

3. The verification bench for a liquid metering system in a post-processing plant according to claim 1, characterized in that: The left end of the liquid volume calibration conveying pipe (7) is welded to the calibration tank A (8), the upper end of the calibration tank A (8) is welded to the overflow pipe (9) of the calibration tank A, and the lower end is welded to the discharge pipe (10) of the calibration tank A.

4. The verification bench for a liquid metering system in a post-processing plant according to claim 1, characterized in that: The lower end of weighing tank A (13) is welded to the discharge pipe (14) of weighing tank A.

5. A verification bench for a liquid metering system in a post-processing plant according to claim 1, characterized in that: The right end of the liquid volume calibration conveying pipe (7) is welded to the calibration tank B (23), the upper end of the calibration tank B (23) is welded to the overflow pipe (24) of the calibration tank B, and the lower end is welded to the discharge pipe (25) of the calibration tank B.

6. A verification bench for a liquid metering system in a post-treatment plant according to claim 1, characterized in that: The left end of the metering tank feed pipe (18) is welded to the funnel A (17).

7. A method for using a validation bench for a post-processing plant liquid metering system as described in claim 1, characterized in that: Includes the following steps: Includes the following steps: S1: Close all valves and deliver the calibration solution to the feed tank (2) through the feed inlet pipe (1); S2: Record the readings of electronic scale A (15) and electronic scale B (30) when no calibration liquid is added, that is, the mass of weighing tank A (13) and weighing tank B (28); S3: Determine the calibration increment and select calibration tank A(8); S4: Open manual shut-off valve A (4), electric regulating valve A (5) and manual shut-off valve B (6); S5: When the calibration liquid flows out of the overflow pipe (9) of calibration tank A, adjust the electric regulating valve A (5) to make the calibration liquid in calibration tank A (8) slowly reach the calibration volume until the calibration liquid flows out of the overflow pipe (9) of calibration tank A and stabilizes. Then close the manual shut-off valve B (6), the electric regulating valve A (5) and the manual shut-off valve A (4). S6: Open the manual shut-off valve C (11) and the electric regulating valve B (12), and adjust the electric regulating valve B (12) so that all the calibration liquid in the calibration tank A8 is poured into the weighing tank A (13) and the liquid level is kept stable. S7: Close the manual shut-off valve C(11) and the electric regulating valve B(12); S8: Repeat S3 and S4 to replenish the standard volume of calibration solution for later use; S9: Record the reading of electronic scale A(15) after it stabilizes; S10: Open the manual ball valve A (16) to add the calibration liquid into the metering tank (19); S11: After the calibrated liquid in weighing tank A(13) is emptied, close the manual ball valve A(16); S12: Record the reading of electronic scale A(15), that is, the tare weight of weighing tank A(13).

8. The method according to claim 7, characterized in that: It also includes S13: After the liquid level in the metering tank stabilizes, record the liquid level pressure difference response value of the metering tank (19) and the corresponding temperature value in the metering tank (19).

9. The method according to claim 8, characterized in that: It also includes S14: cyclic operation to achieve continuous calibration.

Images