Groove load test device and method for closed container of nuclear power station

Abstract

The invention discloses a groove load test device and method for a closed container of a nuclear power station, and relates to the technical field of load tests. The top beam is arranged at the top of the rack; the at least two pressure sensors are arranged at the bottom of the rack; the multiple supporting columns are arranged on the multiple pressure sensors respectively, and the tops of the multiple supporting columns are attached to the inner surfaces of the multiple grooves of the container respectively; the auxiliary supporting mechanism is arranged at the bottom of the rack; the lateral supporting mechanism is arranged in the rack; and the top cover is arranged at the top of the container. The auxiliary supporting mechanism and the lateral supporting mechanism are utilized, when a load test is carried out on the groove of the container, the container does not need to be welded, meanwhile, the auxiliary supporting mechanism and the lateral supporting mechanism support the container, the container is not prone to inclining in the test process, and therefore the safety of the container groove load test is improved.

Description

Technical Field

[0001] The present application relates to the technical field of load testing, and in particular to a groove load testing device and method for a closed container of a nuclear power plant. Background Art

[0002] As the domestic manufacturing output of spent fuel transport containers gradually increases, domestic manufacturers have become more and more experienced in the key manufacturing processes of spent fuel transport containers. The groove load test of spent fuel transport containers is one of the important tests to verify the function of the container. It is used to verify whether the manufacturing quality of the grooves on both sides of the container meets the design and use requirements.

[0003] Currently, the conventional testing method involves welding a mounting bracket directly below the container's groove (i.e., at the bottom of the container), placing a jack and pressure sensor on the mounting bracket, and using the jack to apply a load upward to the groove for testing. This method has two drawbacks: first, the amount of welding required is large, which can easily affect the container; second, the applied load is large, and the contact surface is small, which can pose safety risks. Summary of the Invention

[0004] In order to improve the safety of the container groove load test and reduce the impact of welding on the container, the present application provides a groove load test device and method for a closed container of a nuclear power plant.

[0005] In the first aspect, the present application provides a groove load test device for a closed container of a nuclear power plant, which adopts the following technical solution: A groove load test device for a sealed container in a nuclear power plant comprises a platform, which is arranged on the ground and the container is placed in the platform; a top beam, which is arranged on the top of the platform; at least two pressure sensors, which are arranged at the bottom of the platform; at least two support columns, wherein a plurality of the support columns are respectively arranged on a plurality of pressure sensors, and the tops of the plurality of support columns are respectively in contact with the inner surfaces of a plurality of grooves in the container; an auxiliary support mechanism, which is arranged at the bottom of the platform and is used to assist in fixing the support columns and the pressure sensors; a lateral support mechanism, which is arranged in the platform and is used to wrap and support the container in the radial direction of the container; and a top cover, which is arranged at the top of the container. The pressure member is arranged at the upper middle part of the top cover, and the top end of the pressure member abuts against the middle part of the bottom wall of the top beam.

[0006] By adopting the above technical solution, when performing a load test on a container groove, the container is first placed in the test stand, the auxiliary support mechanism is adjusted so that the support column and pressure sensor are moved below the groove, the container is slowly lowered so that multiple support columns are stuck in multiple grooves, and then the lateral support mechanism is used to wrap and support the container in the radial direction of the container. The top cover is placed on the top of the container, and the pressure member is used to apply pressure to the container to perform the groove load test. This arrangement eliminates the need for welding the container when performing a load test on the container groove. The auxiliary support mechanism and the lateral support mechanism simultaneously support the container, making it less likely for the container to tilt during the test, thereby improving the safety of the container groove load test.

[0007] Preferably, the lateral support mechanism includes two groups of lateral bottom plates, a baffle, a support box, a first conduit, a first guide rod, a forward bolt and a backward bolt. The two groups of lateral bottom plates are fixedly arranged in the stand and are located on both sides of the radial direction of the container. The baffle is fixedly arranged on the lateral bottom plate. The support box is radially slidably arranged on the side of the baffle close to the container along the container, and the side of the support box away from the baffle abuts against the outer wall of the container. The first guide rod is arranged on the baffle, the first conduit is fixedly arranged in the support box, the first guide rod is slidably arranged in the first conduit, the forward bolt is rotatably arranged in the baffle and is used to push the support box to move toward the container, and the backward bolt is rotatably arranged in the baffle and is used to pull the support box to move away from the container.

[0008] By adopting the above technical solution, when placing the container, the backward bolt is rotated to drive the two support boxes to move away from each other. After the container is placed, the forward bolt is rotated to drive the two support boxes to move toward each other. The side of the two support boxes that are close to each other clamps and supports the container along the radial direction of the container, thereby improving the stability of the container during testing. At the same time, the support box can slide along the radial direction of the container, so that the lateral support mechanism can be applied to containers of different sizes and types.

[0009] Preferably, the auxiliary support mechanism includes at least two groups of bases, a second guide tube, a second guide rod, a movable bolt and a push plate, multiple groups of the bases are fixedly arranged at the bottom of the stand and are arranged at equal intervals along the circumference of the container, the second guide tube is fixedly arranged on the base, the second guide rod is slidably arranged in the second guide tube, the push plate is fixedly arranged at the end of the second guide rod close to the support column, and the movable bolt is rotatably arranged in the base and is used to push the push plate to move and abut the support column.

[0010] By adopting the above technical solution, when placing the container, the moving bolt is rotated, and the moving bolt drives the push plate to move toward the container. The push plate pushes the support column to move to the bottom of the groove, and then the container is slowly lowered so that the support column is inserted into the groove, and the two push plates clamp the support column, further improving the stability of the container during the test. At the same time, the push plate drives the support column to slide along the radial direction of the container, so that the auxiliary support mechanism can be suitable for containers of different sizes and types.

[0011] Preferably, a third guide tube is fixedly provided in the base, a third guide rod is slidably provided in the third guide tube, a splint is fixedly provided at the end of the third guide rod close to the support column, two splints are provided, and the two splints are respectively located on both sides of the support column, and clamping bolts are rotatably provided on the opposite sides of the support column on the base, and the clamping bolts are used to push the splint to move toward the support column.

[0012] By adopting the above technical solution, after the support column is inserted into the groove, the clamping bolt is rotated, and the clamping bolt drives the two clamps to move toward each other. The two clamps move and clamp the support column, thereby improving the stability of the support column.

[0013] Preferably, an insert block is fixedly provided at the bottom end of the support column, and the insert block is inserted into the pressure sensor.

[0014] By adopting the above technical solution, when the push plate drives the support column to move, the support column drives the pressure sensor to move synchronously through the insert block, so that the support column can always be located directly above the pressure sensor during the movement process, thereby making the test results more accurate.

[0015] Preferably, the platform includes an upper frame and a lower frame, the lower frame is placed on the ground, the auxiliary support mechanism is arranged at the bottom of the lower frame, the lateral support mechanism is arranged in the middle of the lower frame, the upper frame is detachably arranged at the top end of the lower frame, the top beam is arranged in the upper frame, and personnel walkways are fixedly arranged on the outer peripheral sides of the upper frame and the lower frame, and an escalator is arranged on the outer peripheral side of the platform, and the escalator connects the two personnel walkways and the bottom of the lower frame.

[0016] By adopting the above technical solution, the test stand adopts a split assembly form, which can better avoid height restrictions and other restrictions during the transfer and transportation of the device. The escalator and personnel platform make it easier for staff to support and test the container.

[0017] Preferably, a workbench is fixedly provided at the bottom of the lower frame, the auxiliary support mechanism is arranged on the workbench, a plurality of support seats are fixedly provided at the bottom of the workbench, the plurality of support seats are respectively located below a plurality of pressure sensors, and connecting rods are connected between the plurality of support seats.

[0018] By adopting the above technical solution, the support seat supports multiple support columns, thereby improving the stability of the container during testing. At the same time, the connecting rod connects multiple support seats to form a force-bearing whole, further improving the supporting effect of the support seat.

[0019] Preferably, a plurality of hooks are fixedly provided in the upper frame and the lower frame.

[0020] By adopting the above technical solution, workers can hang the safety belt on the hook during operation, thereby improving the safety of the workers' operation.

[0021] Preferably, a receiving groove is formed on the top wall of the top cover, the bottom of the pressure-applying member is located in the receiving groove, and a step is formed on the bottom wall of the top cover.

[0022] By adopting this technical solution, the pressure member is placed in the receiving groove, preventing it from sliding during testing. The step at the bottom of the top cover allows the top cover to be snapped into the container opening, preventing the top cover from shifting during testing and increasing the structural strength of the top plate.

[0023] In a second aspect, the present application provides a groove load test method for a closed container of a nuclear power plant, which adopts the following technical solution: A groove load test method for a closed container of a nuclear power plant, using the above-mentioned groove load test device for a closed container of a nuclear power plant, comprises the following steps: S1: The stand is fixed on the ground, and the auxiliary support mechanism and the lateral support mechanism are separated to the maximum distance; S2: Use a crane to lift the container and place it above the bottom of the platform. Adjust the position of the auxiliary support mechanism so that the support column and the pressure sensor are directly below the container groove, and calibrate the sensor reading to zero. S3: The container slowly drops vertically until the support column is stuck in the groove; S4: Adjust the lateral auxiliary support mechanism so that it surrounds the outer circle of the container and tighten it to ensure that the container is upright; S5: hoist the top cover to the top of the container and place the pressure piece on the top cover; S6: Hoist the top beam and install it on the stand; S7: Observe the pressure sensor reading Q1, test load Q-sensor reading Q1 = additional applied load Q2, slowly load the pressure piece until the sensor reading reaches the test load Q; S8: After the sensor reading reaches the test load Q and maintains it for a period of time, remove the load and reverse the above steps to place the container steadily on the bottom of the test stand. Perform non-destructive testing on the corresponding position of the groove to verify the test results.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The auxiliary support mechanism and the lateral support mechanism eliminate the need to weld the container when performing a load test on the container's groove. The auxiliary support mechanism and the lateral support mechanism simultaneously support the container, making it less likely for the container to tilt during the test, thereby improving the safety of the container groove load test. 2. With the help of the clamping bolt and the clamping plate, after the support column is inserted into the groove, the clamping bolt is rotated, and the clamping bolt drives the two clamping plates to move towards each other. The two clamping plates move and clamp the support column, thereby improving the stability of the support column; 3. When the push plate drives the support column to move through the insert block, the support column drives the pressure sensor to move synchronously through the insert block, so that the support column can always be located directly above the pressure sensor during the movement process, thereby making the test results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the principle structure of the groove load test device for the closed container of a nuclear power plant in Example 1 of the present application; Figure 2 This is a schematic diagram of the overall structure of the groove load test device for a closed container in a nuclear power plant in Example 1 of the present application; Figure 3 This is a partial structural diagram of a groove load test device for a closed container in a nuclear power plant in Example 1 of the present application; Figure 4 This is a partial structural diagram of the groove load test device for a closed container of a nuclear power plant in Example 1 of the present application, highlighting the pressure member; Figure 5 This is a partial structural diagram of the groove load test device for a closed container of a nuclear power plant in Example 1 of the present application, highlighting the support seat; Figure 6 This is a partial structural exploded view of the groove load test device for a closed container in a nuclear power plant in Example 1 of the present application; Figure 7 A partial structural top view of a groove load test device for a closed container in a nuclear power plant in Example 1 of the present application; Figure 8 This is a partial structural diagram of the groove load test device for a closed container of a nuclear power plant in Example 1 of the present application, highlighting the auxiliary support mechanism; Figure 9 This is a partial structural diagram of the groove load test device for a closed container of a nuclear power plant in Example 1 of the present application, highlighting the splint; Figure 10This is a partial structural diagram of the groove load test device for a closed container of a nuclear power plant in Example 1 of the present application, highlighting the lateral support mechanism; Figure 11 This is a flow chart of the groove load test method for a closed container in a nuclear power plant in Example 2 of the present application.

[0026] Figure numerals: 1, container; 2, groove; 3, stand; 31, upper frame; 32, lower frame; 4, pressure sensor; 5, support column; 6, auxiliary support mechanism; 61, base; 62, second guide tube; 63, second guide rod; 64, moving bolt; 65, push plate; 7, lateral support mechanism; 71, lateral bottom plate; 72, baffle; 73, support box; 74, first guide tube; 75, first guide rod; 76, front Incoming bolt; 77, retracting bolt; 8, top cover; 9, pressure piece; 10, third guide tube; 11, third guide rod; 12, clamping plate; 13, clamping bolt; 14, insert block; 15, personnel walkway; 16, escalator; 17, workbench; 18, support seat; 19, connecting rod; 20, hook; 21, receiving groove; 22, step; 23, rubber pad; 24, limit block; 25, display; 26, top beam; 27, connecting flange. DETAILED DESCRIPTION

[0027] The following is combined with Figures 1-11 This application is described in further detail.

[0028] Example 1: The embodiment of the present application discloses a groove load testing device for a closed container of a nuclear power plant.

[0029] Reference Figure 1 A groove load test device for a closed container in a nuclear power plant includes a stand 3, a top beam 26, a pressure sensor 4, a display 25, a support column 5, an auxiliary support mechanism 6, a lateral support mechanism 7, a top cover 8 and a pressure member 9. The stand 3 is placed on the ground, and the container 1 is hoisted into the stand 3 by a crane.

[0030] Reference Figure 2 and Figure 3 The stand 3 consists of an upper frame 31 and a lower frame 32. The lower frame 32 is placed on the ground. The top of the lower frame 32 and the bottom of the upper frame 31 are detachably connected by a connecting flange 27, and a rib is fixedly mounted on the connecting flange 27. The stand 3 is assembled in a split manner to better avoid height restrictions and other over-limit restrictions during device transfer and transportation. The use of ribs increases the structural strength of the connecting flange 27. At the same time, the stand 3 is assembled from top to bottom. If the height of the container 1 is too high, only the height of the upper frame 31 needs to be increased.

[0031] Reference Figure 4 and Figure 5A workbench 17 is fixedly mounted on the bottom of the lower frame 32. Two support blocks 18 are fixedly mounted on the bottom wall of the workbench 17. A connecting rod 19 is fixedly mounted between the two support blocks 18. The support blocks 18 support the multiple support columns 5, improving the stability of the container 1 during testing. At the same time, the connecting rod 19 connects the two support blocks 18 to form a force-bearing whole, further improving the supporting effect of the support blocks 18.

[0032] Reference Figure 1 、 Figure 5 and Figure 6 The pressure sensor 4 is placed on the workbench 17, and the support column 5 is placed on the pressure sensor 4. There are two pressure sensors 4 and two support columns 5, and the two pressure sensors 4 are respectively located directly above the two support bases 18, and the two support columns 5 are respectively located directly above the two pressure sensors 4. The display 25 is electrically connected to the pressure sensor 4 and is used to display the pressure value.

[0033] The support columns 5 are provided with eyelets for hoisting. The support columns 5 are narrow at the top and wide at the bottom, with an arc-shaped top. When the container 1 is placed in the stand 3, the upper half of the support columns 5 snaps into the grooves 2 and fits against the inner surface of the grooves 2. The two support columns 5 support the container 1 through the two grooves 2, keeping it suspended and transferring the load borne by the grooves 2 to the pressure sensor 4 below. The narrow-at-top, wide-at-bottom design ensures even load distribution, increases the load-bearing area at the bottom, and provides excellent support.

[0034] Reference Figure 3 and Figure 4 The auxiliary support mechanism 6 is mounted on the workbench 17 and is used to drive the two support columns 5 and the pressure sensor 4 to move and limit the position of the two support columns 5 and the pressure sensor 4. A lateral support mechanism 7 is mounted within the lower frame 32. Two lateral support mechanisms 7 are installed, spaced apart along the axial direction of the container 1, and are used to support and limit the container 1 in the radial direction.

[0035] The top beam 26 is fixedly mounted on the top of the upper frame 31, the top cover 8 is placed on the top of the container 1, and the pressure member 9 is placed in the middle of the top wall of the top cover 8. In this application, the pressure member 9 can be selected as the pressure member 9, and the top of the pressure member 9 abuts the middle of the bottom wall of the top beam 26. The main body of the top beam 26 is an I-beam, and a double lug is installed on the top wall of the top beam 26. The top beam 26 has connection holes at both ends in the longitudinal direction. The interior of the top beam 26 is uniformly distributed with structural ribs, and webs are provided on both sides to increase the structural strength of the top beam 26.

[0036] Reference Figure 1 and Figure 3When performing a load test on the grooves 2 of container 1, a crane is used to lift container 1 and place it on the stand 3. The auxiliary support mechanism 6 is adjusted, and the two support columns 5 and the pressure sensor 4 are moved below the two grooves 2. The crane then slowly lowers container 1, allowing the tops of the two support columns 5 to engage within the grooves 2. The auxiliary mechanism is first adjusted to limit the position of the two support columns 5 and the pressure sensor 4, and then the lateral support mechanism 7 is used to wrap and support the container 1 radially.

[0037] Place the top cover 8 on top of the container 1, place the pressure member 9 on the top cover 8, and use the pressure member 9 to apply pressure to the container 1. The top end of the pressure member 9 abuts the top beam 26, and then the groove 2 load test can be performed. At this time, the weight of the container 1 itself serves as part of the load, which can reduce the load applied by the pressure member 9 and thus reduce the impact of the load on the container 1 itself. In this way, when performing a load test on the groove 2 of the container 1, there is no need to weld the container 1. At the same time, the auxiliary support mechanism 6 and the lateral support mechanism 7 support the container 1, making it difficult for the container 1 to tilt during the test, thereby improving the safety of the container 1 groove load test.

[0038] Reference Figure 2 and Figure 3 The upper frame 31 and the lower frame 32 are both square in structure. A personnel walkway 15 is fixedly mounted on the outer periphery of each of the upper frame 31 and the lower frame 32. A ladder 16 is fixedly mounted on the outer periphery of the platform 3. The ladder 16 connects the two personnel walkways 15, and the bottom of the ladder 16 is located at the bottom of the lower frame 32. The ladder 16 and the personnel walkway 15 facilitate the support and testing of the container 1 by the staff. Multiple hooks 20 are fixedly mounted in each of the upper frame 31 and the lower frame 32. During operation, the staff hang their safety belts on the hooks 20, thereby improving the safety of the staff.

[0039] Reference Figure 7 and Figure 8 Specifically, the auxiliary support mechanism 6 includes two bases 61, a push plate 65, four second guide tubes 62, a second guide rod 63 and a movable bolt 64. Each base 61, push plate 65, two second guide tubes 62, second guide rod 63 and movable bolt 64 form a group of structures. The two groups of structures are installed on the workbench 17 and are located above the two pressure sensors 4.

[0040] In one configuration, a base 61 is fixedly mounted on the workbench 17. The base 61 is in a V-shape and covers the outer side of the support column 5 away from the container 1. Two second guide tubes 62 are fixedly mounted on the inner sidewall of the base 61 and are located on the side of the support column 5 away from the container 1. Two second guide rods 63 are slidably mounted within the two second guide tubes 62. A push plate 65 is fixedly mounted on the ends of the two second guide rods 63 near the support column 5. Two movable bolts 64 are threadedly mounted within the base 61, with the ends of the movable bolts 64 abutting the sidewall of the push plate 65 away from the support column 5.

[0041] When placing container 1, the movable bolt 64 is rotated, which drives the push plate 65 toward container 1. This movement of the push plate 65 also moves the second guide rod 63 within the second conduit 62, ensuring more stable movement of the push plate 65. The push plate 65 pushes the support column 5 to the point directly below the groove 2. The container 1 is then slowly lowered, allowing the support column 5 to insert into the groove 2. The two push plates 65 clamp the support column 5, further enhancing the stability of the container 1 during testing. Furthermore, the push plates 65 drive the support column 5 to slide radially along the container 1, allowing the auxiliary support mechanism 6 to accommodate containers 1 of varying sizes and types.

[0042] Reference Figure 6 The bottom end of the support column 5 is fixedly mounted with an insert block 14, which is inserted into the pressure sensor 4. When the push plate 65 drives the support column 5 to move, the support column 5 drives the pressure sensor 4 to move synchronously through the insert block 14, so that the support column 5 can always be located directly above the pressure sensor 4 during the movement, thereby making the test results more accurate.

[0043] Reference Figure 9 Each base 61 is fixedly mounted on either side of the support column 5 with two third guide tubes 10. A third guide rod 11 is slidably mounted within each third guide tube 10. A clamping plate 12 is fixedly mounted on the ends of the two third guide rods 11 on each side of the base 61, near the support column 5. Each base 61 is threadedly mounted on either side of the support column 5 with a clamping bolt 13, the ends of which abut against the sidewall of the clamping plate 12 away from the support column 5.

[0044] After the support column 5 is inserted into the groove 2, the four clamping bolts 13 are rotated, and the four clamping bolts 13 drive the two clamping plates 12 to move toward each other. The two clamping plates 12 move and clamp the support column 5, which can provide auxiliary support on the side of the support column 5 and the pressure sensor 4, limit the displacement of the support column 5 and the pressure sensor 4, further improve the stability of the container 1 during the test, and play a good protective and preventive role.

[0045] Reference Figure 6Each support column 5 is bolted to a stopper 24 on one side of the container 1 and below the groove 2. The stopper 24 is curved and positioned near the sidewall of the container 1. When the auxiliary movement mechanism moves the support column 5 toward the front of the groove 2, the support column 5 drives the stopper 24 to abut against the outer wall of the container 1, further supporting and limiting the container 1. The stopper 24 can be replaced based on the size of the container 1, meeting the needs of containers of different sizes.

[0046] Reference Figure 7 and 10 Specifically, the lateral support mechanism 7 includes two lateral base plates 71, a baffle 72, a support box 73, a retraction bolt 77, four first guide tubes 74, a first guide rod 75, and an advance bolt 76. Each lateral base plate 71, baffle 72, support box 73, retraction bolt 77, two first guide tubes 74, first guide rod 75, and advance bolt 76 constitutes a set of structures. The two sets of structures are installed within the lower frame 32 and are located on opposite sides of the container 1 along the radial direction. In a top view, the line connecting the two sets of structures of the lateral support mechanism 7 is perpendicular to the line connecting the two sets of structures of the auxiliary support mechanism 6.

[0047] In one configuration, the lateral base plate 71 is triangular and fixedly mounted within the lower frame 32. The baffle 72 is fixedly mounted on the side of the lateral base plate 71 closest to the container 1. The support box 73 is mounted on the side of the baffle 72 closest to the container 1. The side of the support box 73 closest to the container 1 is curved. Two first guide tubes 74 are fixedly mounted within the support box 73. Two first guide rods 75 are slidably mounted within the two second guide tubes 62 and are fixedly connected to the baffle 72. Two advance bolts 76 are threadedly mounted within the baffle 72, with their ends abutting the side of the support box 73 facing away from the container 1. A retraction bolt 77 is threadedly mounted within the support box 73 and passes through the baffle 72.

[0048] When placing the container 1, the retracting bolt 77 is rotated to move the two support boxes 73 away from each other. After the container 1 is placed, the advancing bolt 76 is rotated to move the two support boxes 73 toward each other. The sides of the two support boxes 73 that are close to each other clamp and support the container 1 along the radial direction of the container 1, ensuring that the container 1 is in a vertical state, thereby improving the stability of the container 1 during testing. At the same time, the support boxes 73 can slide along the radial direction of the container 1, making the lateral support mechanism 7 applicable to containers 1 of different sizes and types. The support boxes 73 are replaced and used according to the size of the container 1 to meet the needs of containers 1 of different sizes. At the same time, multiple pairs of lateral support mechanisms 7 can be provided according to the height and weight of the container 1 to meet the needs of lateral support.

[0049] Reference Figure 4The top wall of the top cover 8 is provided with multiple receiving grooves 21 in the middle and around the sides. The bottom of the pressure member 9 is located in the receiving grooves 21 to prevent the pressure member 9 from sliding during the test. When different test loads are required, two top beams 26 are added to the upper frame 31, and four pressure members 9 are added to the four receiving grooves 21 around the top cover 8. The top ends of every two pressure members 9 abut the bottom wall of a top beam 26. This allows one or more pressure members 9 to be selected as the power source for applying additional loads.

[0050] Reference Figure 5 A step 22 is integrally formed on the bottom wall of the top cover 8, and a rubber pad 23 is mounted on the bottom wall of the top cover 8, outside of the step 22. The step 22 on the bottom of the top cover 8 allows the top cover 8 to be snapped into the open end of the container 1, preventing displacement of the top cover 8 during testing and increasing the structural strength of the top plate. The rubber pad 23 located on the step 22 prevents friction between the top cover 8 and the open end of the container 1 during testing, thereby better protecting the end of the container 1.

[0051] The implementation principle of the groove load test device for a closed container in a nuclear power plant according to an embodiment of the present application is as follows: when performing a load test on the container 1, the stand 3 is fixedly placed on the ground, and the auxiliary support mechanism 6 and the lateral support mechanism 7 are separated to the maximum distance; the crane lifts the container 1 and places it above the bottom of the lower frame 32, and adjusts the position of the auxiliary support mechanism 6 so that the support column 5 and the pressure sensor 4 are located directly below the groove 2 of the container 1, and the sensor reading is zeroed; the container 1 slowly falls vertically until the support column 5 is stuck in the groove 2; the lateral auxiliary support mechanism 6 is adjusted so that it surrounds the outer circle of the container 1, and the lateral auxiliary support mechanism 6 is tightened to ensure that the container 1 is vertical; the top cover 8 is hoisted and placed on the top of the container 1, and the pressure member 9 is placed on the top cover 8, and the top beam 26 is hoisted and installed on the upper frame 31; the pressure member 9 is loaded to apply load to the container 1 and the groove 2, and the support column 5 transfers the load to the pressure sensor 4 at the bottom, and the reading on the display 25 is the load borne by the groove 2. In this way, during the test and preparation process, the staff can easily adjust, move and calibrate the position, thereby improving the efficiency of the test and the safety of the operation process.

[0052] Example 2: The embodiments of the present application disclose a groove load test method for a closed container of a nuclear power plant.

[0053] Reference Figure 11 A groove load test method for a closed container of a nuclear power plant, using the above-mentioned groove load test device for a closed container of a nuclear power plant, comprises the following steps: S1: The stand 3 is fixedly placed on the ground, and the auxiliary support mechanism 6 and the lateral support mechanism 7 are separated to the maximum distance; S2: The crane lifts the container 1 and places it above the bottom of the lower frame 32. The auxiliary support mechanism 6 is adjusted so that the support column 5 and the pressure sensor 4 are directly below the groove 2 of the container 1, and the sensor reading is calibrated to zero. S3: The container 1 slowly falls vertically downward until the support column 5 is stuck in the groove 2; S4: Adjust the lateral auxiliary support mechanism 6 so that it surrounds the outer circle of the container 1, and tighten the lateral auxiliary support mechanism 6 to ensure that the container 1 is upright; S5: hoist the top cover 8 and place it on the top of the container 1, and place the pressure member 9 on the top cover 8, hoist the top beam 26 and install it on the upper frame 31; S6: Observe the reading Q1 of the pressure sensor 4. Test load Q-sensor reading Q1 = additional applied load Q2. Slowly load the pressure member 9 until the sensor reading reaches the test load Q. S7: After the sensor reading reaches the test load Q and maintains it for a period of time, remove the load and reverse the above steps to place the container 1 stably on the workbench 17 at the bottom of the lower frame 32, and perform non-destructive testing on the corresponding position of the groove 2 to verify the test results.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A groove load test device for a closed container of a nuclear power plant, characterized by: include A stand (3) is arranged on the ground, and the container (1) is placed in the stand (3); A top beam (26) is provided on the top of the platform (3); At least two pressure sensors (4) are arranged at the bottom of the stand (3); at least two support columns (5), wherein the plurality of support columns (5) are respectively arranged on the plurality of pressure sensors (4), and the tops of the plurality of support columns (5) are respectively fitted with the inner surfaces of the plurality of grooves (2) of the container (1); An auxiliary support mechanism (6), arranged at the bottom of the stand (3), for assisting in fixing the support column (5) and the pressure sensor (4); A lateral support mechanism (7) is provided in the stand (3) and is used to wrap and support the container (1) along the radial direction of the container (1); A top cover (8) is provided on the top of the container (1); A pressure member (9) is arranged at the upper middle portion of the top cover (8), and the top end of the pressure member (9) abuts against the middle portion of the bottom wall of the top beam (26).

2. A groove load test device for a closed container of a nuclear power plant according to claim 1, characterized in that: The lateral support mechanism (7) comprises two groups of lateral bottom plates (71), a baffle (72), a support box (73), a first guide tube (74), a first guide rod (75), an advance bolt (76) and a retreat bolt (77). The two groups of lateral bottom plates (71) are fixedly arranged in the stand (3) and are located on both sides of the container (1) in a radially symmetrical manner. The baffle (72) is fixedly arranged on the lateral bottom plates (71). The support box (73) is arranged on a side of the baffle (72) close to the container (1) and is slidably arranged along the radial direction of the container (1). The support box (73) The side away from the baffle (72) abuts against the outer wall of the container (1), the first guide rod (75) is arranged on the baffle (72), the first conduit (74) is fixedly arranged in the support box (73), the first guide rod (75) is slidably arranged in the first conduit (74), the forward bolt (76) is rotatably arranged in the baffle (72) and is used to push the support box (73) to move toward the container (1), and the backward bolt (77) is rotatably arranged in the baffle (72) and is used to pull the support box (73) to move away from the container (1).

3. The groove load test device for a closed container of a nuclear power plant according to claim 1, characterized in that: The auxiliary support mechanism (6) includes at least two groups of bases (61), a second guide tube (62), a second guide rod (63), a movable bolt (64) and a push plate (65), wherein the plurality of bases (61) are fixedly arranged at the bottom of the stand (3) and are arranged at equal intervals along the circumference of the container (1), the second guide tube (62) is fixedly arranged on the base (61), the second guide rod (63) is slidably arranged in the second guide tube (62), the push plate (65) is fixedly arranged at the end of the second guide rod (63) close to the support column (5), and the movable bolt (64) is rotatably arranged in the base (61) and is used to push the push plate (65) to move and abut against the support column (5).

4. A groove load test device for a closed container of a nuclear power plant according to claim 3, characterized in that: A third conduit (10) is fixedly provided in the base (61), a third guide rod (11) is slidably provided in the third conduit (10), a clamping plate (12) is fixedly provided at the end of the third guide rod (11) close to the support column (5), two clamping plates (12) are provided, and the two clamping plates (12) are respectively located on both sides of the support column (5), and clamping bolts (13) are rotatably provided on opposite sides of the support column (5) on the base (61), and the clamping bolts (13) are used to push the clamping plate (12) to move toward the support column (5).

5. The groove load test device for a closed container of a nuclear power plant according to claim 3, characterized in that: An insert block (14) is fixedly provided at the bottom end of the support column (5), and the insert block (14) is inserted into the pressure sensor (4).

6. The groove load test device for a closed container of a nuclear power plant according to claim 1, characterized in that: The platform (3) includes an upper frame (31) and a lower frame (32), the lower frame (32) is placed on the ground, the auxiliary support mechanism (6) is arranged at the bottom of the lower frame (32), the lateral support mechanism (7) is arranged in the middle of the lower frame (32), the upper frame (31) is detachably arranged at the top end of the lower frame (32), the top beam (26) is arranged in the upper frame (31), and the outer peripheral sides of the upper frame (31) and the lower frame (32) are fixedly provided with a personnel walkway (15), and the outer peripheral side of the platform (3) is provided with an escalator (16), and the escalator (16) connects the two personnel walkways (15) and the bottom of the lower frame (32).

7. A groove load test device for a closed container of a nuclear power plant according to claim 6, characterized in that: A workbench (17) is fixedly provided at the bottom of the lower frame (32), the auxiliary support mechanism (6) is arranged on the workbench (17), a plurality of support seats (18) are fixedly provided at the bottom of the workbench (17), the plurality of support seats (18) are respectively located below a plurality of pressure sensors (4), and connecting rods (19) are connected between the plurality of support seats (18).

8. The groove load test device for a closed container of a nuclear power plant according to claim 6, characterized in that: A plurality of hooks (20) are fixedly arranged in both the upper frame (31) and the lower frame (32).

9. The groove load test device for a closed container of a nuclear power plant according to claim 1, characterized in that: A receiving groove (21) is provided on the top wall of the top cover (8), the bottom of the pressure member (9) is located in the receiving groove (21), and a step (22) is formed on the bottom wall of the top cover (8).

10. A groove load test method for a closed container in a nuclear power plant, characterized by: The groove load test device for a closed container of a nuclear power plant according to any one of claims 1 to 9 comprises the following steps: S1: The stand (3) is fixedly placed on the ground, and the auxiliary support mechanism (6) and the lateral support mechanism (7) are separated to the maximum distance; S2: The crane lifts the container (1) and places it above the bottom of the platform (3). The auxiliary support mechanism (6) is adjusted so that the support column (5) and the pressure sensor (4) are located directly below the groove (2) of the container (1). The sensor reading is then calibrated to zero. S3: The container (1) slowly falls vertically downward until the support column (5) is stuck in the groove (2); S4: Adjust the lateral auxiliary support mechanism (6) so that it surrounds the outer circle of the container (1) and tightens it to ensure that the container (1) is upright; S5: hoisting the top cover (8) and placing it on the top of the container (1), and placing the pressure member (9) on the top cover (8); S6: hoisting the top beam (26) and installing it on the stand (3); S7: Observe the reading Q1 of the pressure sensor (4), test load Q-sensor reading Q1 = additional applied load Q2, and slowly load the pressure member (9) until the sensor reading reaches the test load Q; S8: After the sensor reading reaches the test load Q and remains there for a period of time, the load is removed and the above steps are reversed to place the container (1) stably on the bottom of the stand (3). Non-destructive testing is then performed on the corresponding position of the groove (2) to verify the test results.

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