Fuel storage grillwork drop test bench
By introducing a box and buffer steel plate structure into the drop test bench of the fuel storage grid, the problem of debris splashing was solved, and a safe drop test environment was achieved.
Patent Information
- Application Number
- CN202423294799.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing fuel storage rack drop tests, flying debris poses a safety threat to workers.
A drop test bench for a fuel storage grid was designed, comprising a housing and an internal buffer steel plate. The buffer steel plate and buffer springs absorb the impact force and prevent debris from splashing.
Effectively prevents debris from harming workers, protects equipment, and reduces safety risks.
Smart Images
Figure CN223691992U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fuel storage grid technology, specifically a fuel storage grid drop test bench. Background Technology
[0002] During nuclear power plant operation, the new fuel required by the reactor is typically stored in the new fuel storage room of the fuel building. New fuel storage racks are specialized equipment used to temporarily store new fuel assemblies before they are loaded into the reactor. After the new fuel assemblies have been received and inspected by the power plant, they are vertically inserted into the racks using an auxiliary crane for storage, awaiting the next stage of fuel loading.
[0003] However, in the production process of existing fuel storage racks, appropriate drop tests are required to verify their rationality and effectiveness. However, in existing technologies, drop test benches for fuel storage racks are generally set up by lifting the fuel storage rack with a crane and releasing ropes for the test. During the drop, the fuel storage rack may generate debris due to external forces, which may cause debris to fly everywhere, posing a certain danger to the life safety of workers. Utility Model Content
[0004] The purpose of this invention is to provide a drop test bench for fuel storage grids to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A drop test bench for a fuel storage rack includes a storage rack and a base. A frame is fixedly connected to the top two sides of the base, and a top plate is fixedly connected to the top of the frame. A sliding guide rail is fixedly connected to both ends of the bottom center of the top plate. An electric hoist is slidably connected to the sliding guide rail. A traction rope is provided at the electric hoist. A release device is fixedly connected to the bottom of the traction rope, and a storage rack is fixedly connected to the release device.
[0007] The top of the base is fixedly connected to a box, and the outer surfaces of the two sides of the box are respectively connected to the inner surface of the frame. The inside of the box is provided with a buffer steel plate.
[0008] Preferably, the front of the housing has a through groove, and a roller shutter door is fixedly connected to the through groove.
[0009] Preferably, the top cross-section of the buffer steel plate is a forward-opening "U" shape, and several first telescopic rods are provided at both ends of the outer surface of the buffer steel plate.
[0010] Preferably, the outer surface of the buffer steel plate is provided with a plurality of second telescopic rods, the fixed end of the second telescopic rod is fixedly connected to the inner cavity back surface of the box, and the telescopic end of the second telescopic rod is fixedly connected to the outer surface front surface of the buffer steel plate.
[0011] Preferably, a buffer spring is sleeved on the outer surface of the second telescopic rod, and the two ends of the buffer spring are connected with the inner cavity back surface of the box and the outer surface front surface of the buffer steel plate respectively.
[0012] Preferably, the outer surface of the box is fixedly connected with a reinforcing rib.
[0013] Compared with the prior art, the fuel storage rack drop test bench has the beneficial effects that:
[0014] The fuel storage rack drop test bench has the box arranged at the bottom of the test bench, and the working personnel is located outside the box during the test process, so that the debris generated in the drop process of the storage rack is blocked by the box, and the working personnel is prevented from being in danger.
[0015] The fuel storage rack drop test bench has the buffer steel plate arranged in the box, and the buffer steel plate moves backward after being impacted by the debris, and the buffer spring converts the external force into the buffer force of the spring during the movement process, so that the box is buffered and protected. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a whole front structure schematic view of the utility model;
[0017] Figure 2 It is a whole back structure schematic view of the utility model;
[0018] Figure 3 It is a buffer steel plate structure schematic view of the utility model.
[0019] In the drawing: 1, base; 2, rack; 3, top plate; 4, box; 5, roller shutter door; 6, buffer steel plate; 7, traction rope; 8, unhooker; 9, reinforcing rib; 10, sliding guide rail; 11, electric hoist; 12, first telescopic rod; 13, second telescopic rod; 14, buffer spring. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0021] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "vertical", "upper", "lower", "horizontal" and the like is the orientation or position relation based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0022] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0023] Please refer to Figures 1-2 The utility model provides a technical scheme: fuel storage rack drop test bench, including storage rack, base 1, the top of base 1 both sides are fixedly connected with rack 2, the top of rack 2 is fixedly connected with top plate 3, the bottom center of top plate 3 is fixedly connected with sliding guide rail 10 along both ends, sliding guide rail 10 is embedded and is slidably connected with electric hoist 11, electric hoist 11 is provided with traction rope 7, the bottom of traction rope 7 is fixedly connected with unhooker 8, it needs to be explained that the sliding of electric hoist 11 on sliding guide rail 10 is the existing mature technology, and here will not be detailed in the specific structure and working principle of its interior, unhooker 8 is fixedly connected with storage rack, and the unhooking of storage rack is the existing mature technology, and here will not be detailed in the specific structure and working principle of its interior,
[0024] The top of base 1 is fixedly connected with box 4, the both sides of box 4 are connected with the inner surface of rack 2 respectively, and the inside of box 4 is provided with buffer steel plate 6.
[0025] Further, the front of box 4 is provided with a through slot, and the through slot is fixedly connected with a roller shutter door 5. The roller shutter door 5 is an existing mature technology, and the specific structure and working principle of its interior will not be described in detail here.
[0026] In use, the storage rack is placed in the box 4, then the storage rack is lifted by the unhooker 8, and the position of the storage rack is changed by the electric hoist 11, then the storage rack is unhooked, and the storage rack falls to the bottom of the box 4, thereby realizing the drop test of the storage rack.
[0027] When the drop test is completed, the roller shutter door 5 is started by the controller, and after the roller shutter door 5 is opened, the storage rack can be taken out from the box body 4 by a tool, and after the storage rack is completely taken out, the roller shutter door 5 is closed.
[0028] Please refer to Figure 3 The top cross section of the buffer steel plate 6 is a " " shape opening forward, and a plurality of first telescopic rods 12 are arranged at the two ends of the outer surface of the buffer steel plate 6.
[0029] Further, a plurality of second telescopic rods 13 are arranged at the back end of the outer surface of the buffer steel plate 6, the fixed end of the second telescopic rod 13 is fixedly connected to the back of the inner cavity of the box body 4, and the telescopic end of the second telescopic rod 13 is fixedly connected to the front of the outer surface of the buffer steel plate 6.
[0030] Further, the outer surface of the second telescopic rod 13 is sleeved with a buffer spring 14, and the two ends of the buffer spring 14 are connected to the back of the inner cavity of the box body 4 and the front of the outer surface of the buffer steel plate 6, respectively.
[0031] During the drop test, when the debris splashed out during the drop will impact the buffer steel plate 6, and then the buffer steel plate 6 will move backward, so as to compress the first telescopic rod 12 and the second telescopic rod 13, and at the same time, the compression of the second telescopic rod 13 will compress the buffer spring 14, so as to buffer the box body 4.
[0032] Please refer to Figure 2 The outer surface of the box body 4 is fixedly connected with a reinforcing rib 9, and the reinforcing rib 9 is arranged to improve the strength of the box body 4 and prevent the box body 4 from deforming.
[0033] It is worth noting that the whole device is controlled by the controller, and since the controller is a commonly used device, it belongs to the existing mature technology, and the electrical connection relationship and the specific circuit structure are not described here.
[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. Fuel storage rack drop test rig comprising a storage rack, a base (1), characterised in that: The top of the base (1) is fixedly connected with a rack (2), the top of the rack (2) is fixedly connected with a top plate (3), the bottom center of the top plate (3) is fixedly connected with a sliding guide rail (10) along both ends, the sliding guide rail (10) is embeddedly and slidably connected with an electric hoist (11), the electric hoist (11) is provided with a traction rope (7), the bottom of the traction rope (7) is fixedly connected with an unhooking device (8), the unhooking device (8) is fixedly connected with a storage grid. The top of the base (1) is fixedly connected with a box (4), the outer surfaces of the two sides of the box (4) are connected with the inner surfaces of the racks (2) respectively, and the inside of the box (4) is provided with a buffer steel plate (6).
2. The fuel storage rack drop test stand of claim 1, wherein: The front of the box (4) is provided with a through slot, and the through slot is fixedly connected with a roller shutter door (5).
3. The fuel storage rack drop test stand of claim 1, wherein: The top cross section of the buffer steel plate (6) is a " " shape with the opening facing forward, and the outer surface of the buffer steel plate (6) is provided with a plurality of first telescopic rods (12) at both ends.
4. The fuel storage rack drop test stand of claim 1, wherein: The outer surface of the buffer steel plate (6) is provided with a plurality of second telescopic rods (13) at the back end, the fixed ends of the second telescopic rods (13) are fixedly connected to the back of the inner cavity of the box (4), and the telescopic ends of the second telescopic rods (13) are fixedly connected to the front of the outer surface of the buffer steel plate (6).
5. The fuel storage rack drop test stand of claim 4, wherein: The outer surface of the second telescopic rod (13) is provided with a buffer spring (14) in a sleeved manner, and the both ends of the buffer spring (14) are connected with the back of the inner cavity of the box (4) and the front of the outer surface of the buffer steel plate (6) respectively.
6. The fuel storage rack drop test stand of claim 1, wherein: The outer surface of the box (4) is fixedly connected with a reinforcing rib (9).