A core basket self-adapting cooling flow channel structure facilitating maintenance

Abstract

The utility model relates to the technical field of core basket, especially discloses a core basket self -adaptation cooling runner structure convenient to maintain, including core basket body, the inside of core basket body is equipped with the inner chamber, the inside symmetry fixed mounting of inner chamber has integrated self -adaptation cooling runner structure, the inside symmetry fixed mounting of inner chamber has ring disc, and the inside of ring disc is equipped with the article groove, and the inside of article groove is equipped with the bearing, and the inner ring fixed mounting of bearing has transmission ring, and the fixed mounting of transmission ring between has ring piece, and the circumferential surface of ring piece is equipped with outer turbine blade group, and the inside of ring piece is equipped with inner turbine blade group, and the inside of ring piece is equipped with through groove, through the inside symmetry fixed mounting integrated self -adaptation cooling runner structure of inner chamber, when the coolant pump works, utilizes water pressure to push and rotates outer turbine blade group, drives ring piece, inner turbine blade group linkage, forms turbine effect to can realize the increase coolant flow path, promotes and core frame contact area, optimizes cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of reactor core basket technology, and in particular to an adaptive cooling channel structure for reactor core basket that is easy to maintain. Background Technology

[0002] The reactor core basket is a key component inside the reactor pressure vessel of a pressurized water reactor nuclear power plant. It is usually welded from high-strength austenitic stainless steel and has a cylindrical structure. Its main function is to support and position the reactor core assemblies.

[0003] A search of Chinese patent with publication number "CN208873480U" reveals "A novel core basket structure". This core basket has multiple rows of water flow holes on the basket cylinder, which can effectively reduce the lateral flow in the upper chamber during hoisting, reduce the lateral load, and reduce the friction between the control rods and the guide cylinder, which is conducive to the linear dropping of the control rods. Based on the above search and existing technology, it was found that the above patent has certain defects. When the device is in use, it is a conventional perforated water cooling system with a limited contact area with the core frame, resulting in poor cooling effect. The cooling channel structure is fixed and cannot be adaptively adjusted according to the operating conditions, making the cooling efficiency unstable under different operating conditions. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an easy-to-maintain adaptive cooling channel structure for reactor core baskets, solving the technical problem of unstable cooling in existing reactor core baskets.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: An easy-to-maintain adaptive cooling channel structure for a reactor core basket includes a reactor core basket body, wherein an inner cavity is provided on the inner side of the reactor core basket body; The inner cavity is symmetrically and fixedly equipped with an integrated adaptive cooling channel structure; The inner cavity is symmetrically fixedly installed with ring disks. The ring disks have storage slots inside. The storage slots have bearings inside. The outer ring of the bearings is fixedly installed with the inner wall of the storage slots. The inner ring of the bearings has transmission rings fixedly installed. The transmission rings are fixedly installed between the transmission rings. The circumferential surface of the rings has an outer turbine blade assembly. The inner side of the rings has an inner turbine blade assembly. The rings have through slots inside. The through slots and the inner turbine blade assembly are alternately arranged on the rings.

[0006] Preferably, the inner cavity is provided with a core stack frame, which is located inside the ring.

[0007] Preferably, the circumferential surface of the core basket body is provided with a first interface group, and the circumferential surface of the core basket body is provided with a second interface group, the second interface group being located on the surface of the core basket body away from the first interface group.

[0008] (III) Beneficial Effects Firstly, by symmetrically and fixedly installing an integrated adaptive cooling channel structure inside the inner cavity, when the coolant pump is working, the water pressure drives the outer turbine blade assembly to rotate, which drives the ring and the inner turbine blade assembly to work together to form a turbine effect. This can increase the coolant flow path, increase the contact area with the core frame, and optimize the cooling effect. Secondly, since the ring component, outer turbine blade assembly, and inner turbine blade assembly are integrated on the ring component and mounted on the ring disk, making it a single integrated unit, the integrated adaptive cooling channel structure can be directly removed for maintenance, thus facilitating operation. Attached Figure Description

[0009] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial assembly structure diagram of the present invention; Figure 3 This is a sectional view of the core lifting basket body of this utility model; Figure 4 This is a structural diagram of the ring connection assembly of this utility model; Figure 5 This is a structural diagram of the external turbine blade assembly connection of this utility model.

[0011] Legend: 11. Core basket body; 12. Inner cavity; 13. Ring disk; 14. Storage trough; 15. Bearing; 16. Transmission ring; 17. Ring component; 18. Outer turbine blade assembly; 19. Inner turbine blade assembly; 21. Through slot; 22. Core frame; 23. First interface group; 24. Second interface group. Detailed Implementation

[0012] This application provides an easy-to-maintain adaptive cooling channel structure for the reactor core basket, effectively solving the technical problem of unstable cooling in existing reactor core baskets. By symmetrically fixing an integrated adaptive cooling channel structure inside the cavity, when the coolant pump is working, water pressure drives the outer turbine blade assembly to rotate, which in turn drives the ring and inner turbine blade assembly to work together to form a turbine effect. This increases the coolant flow path, improves the contact area with the core frame, and optimizes the cooling effect. Furthermore, since the ring, outer turbine blade assembly, and inner turbine blade assembly are integrated on the ring and mounted on the ring disk, making it a single integrated unit, the integrated adaptive cooling channel structure can be directly removed for maintenance, thus facilitating operation.

[0013] Example like Figures 1-4 As shown, the technical solution in this application embodiment effectively solves the technical problem of unstable cooling of existing core baskets. The overall idea is as follows: To address the problems existing in the prior art, this utility model provides an easy-to-maintain adaptive cooling channel structure for the reactor core basket, including a reactor core basket body 11, and an inner cavity 12 is provided on the inner side of the reactor core basket body 11; An integrated adaptive cooling channel structure is symmetrically fixedly installed inside the inner cavity 12; A ring disk 13 is symmetrically fixedly installed inside the inner cavity 12. A storage groove 14 is opened inside the ring disk 13. A bearing 15 is installed inside the storage groove 14. The outer ring of the bearing 15 is fixedly installed to the inner wall of the storage groove 14. A transmission ring 16 is fixedly installed on the inner ring of the bearing 15. A ring member 17 is fixedly installed between the transmission rings 16. An outer turbine blade assembly 18 is provided on the circumferential surface of the ring member 17. An inner turbine blade assembly 19 is provided on the inner side of the ring member 17. A through groove 21 is opened inside the ring member 17. The through groove 21 and the inner turbine blade assembly 19 are alternately arranged on the ring member 17. Since the ring 17, the outer turbine blade assembly 18, and the inner turbine blade assembly 19 are integrated on the ring 17 and mounted on the ring disk 13, making it a single integrated unit, the integrated adaptive cooling channel structure can be directly removed for maintenance, thus facilitating operation. By symmetrically fixing an integrated adaptive cooling channel structure inside the inner cavity 12, when the coolant pump is working, the water pressure drives the outer turbine blade assembly 18 to rotate, which drives the ring 17 and the inner turbine blade assembly 19 to work together to form a turbine effect. This can increase the coolant flow path, increase the contact area with the core frame 22, and optimize the cooling effect. By symmetrically fixing an annular disk 13 inside the inner cavity 12, and installing a bearing 15 in the inner groove 14 of the annular disk 13, a transmission ring 16 is installed inside the bearing 15, and a fixed ring 17 is fixed between the transmission rings 16. When the outer turbine blade assembly 18 is rotated by water pressure and generates radial force, the transmission ring 16 can rotate flexibly by relying on the bearing 15, ensuring that the ring 17 rotates stably in the gap between the inner rings of the transmission ring 16. This can provide stable support for the rotation of the ring 17 and the associated turbine blade assembly, and ensure the smooth operation of the cooling channel structure.

[0014] The inner cavity 12 is provided with a core stack frame 22, which is located inside the ring 17; By placing the core frame 22 inside the inner cavity 12 and located inside the ring 17, the coolant can come into more full contact with the core frame 22 when the turbine blade assembly increases the coolant flow path, thereby improving the cooling efficiency of the core frame 22 and ensuring the stability of the core operation.

[0015] The circumferential surface of the core basket body 11 is provided with a first interface group 23, and the circumferential surface of the core basket body 11 is provided with a second interface group 24. The second interface group 24 is located on the surface of the core basket body 11 away from the first interface group 23. By setting a first interface group 23 on the circumferential surface of the core basket body 11 to connect to the coolant pump inlet and a second interface group 24 to connect to the coolant pump outlet, the operator can turn on the coolant pump after making this connection, so that water can be delivered to the inner cavity 12, providing coolant flow power for the entire cooling channel structure, thereby realizing the construction of a coolant circulation path and driving the adaptive cooling channel structure to function.

[0016] Working principle: In use, the operator first connects the first interface group 23 to the coolant pump inlet and the second interface group 24 to the coolant pump outlet. Then, the coolant pump is turned on, and water is delivered to the inner cavity 12 through the second interface group 24. The water pressure output by the coolant pump acts on the outer turbine blade group 18 in the figure, pushing it to rotate. The rotation of the outer turbine blade group 18 generates radial force, which drives the associated ring 17 to rotate in the inner ring gap of the transmission ring 16. At the same time, some liquid flows into the inner area of ​​the ring 17 through the through groove 21 in the figure. Furthermore, when the outer turbine blade group 18 rotates, it will move synchronously with the inner turbine blade group 19 in the figure. In this way, the outer turbine blade group 18 and the inner turbine blade group 19 work together to form a turbine effect, which greatly increases the coolant flow path and thus increases the contact area with the core frame 22.

[0017] Finally, it should be noted that: apparently, the above embodiments are merely examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, it is not necessary and impossible to enumerate all the implementation. The obvious changes or variations derived therefrom are still within the scope of the utility model.

Claims

1. An easy-to-maintain adaptive cooling channel structure for a reactor core basket, comprising a reactor core basket body (11), wherein an inner cavity (12) is provided on the inner side of the reactor core basket body (11). Its characteristics are: The inner cavity (12) is symmetrically and fixedly installed with an integrated adaptive cooling channel structure; The inner cavity (12) is symmetrically fixedly installed with a ring disk (13), and a storage groove (14) is opened inside the ring disk (13). A bearing (15) is provided inside the storage groove (14), and the outer ring of the bearing (15) is fixedly installed with the inner wall of the storage groove (14). Among them, a transmission ring (16) is fixedly installed on the inner ring of the bearing (15), and a ring member (17) is fixedly installed between the transmission rings (16).

2. The easy-to-maintain adaptive cooling channel structure for a reactor core basket as described in claim 1, characterized in that, The circumferential surface of the ring (17) is provided with an outer turbine blade assembly (18). The inner side of the ring (17) is provided with an inner turbine blade assembly (19).

3. The easy-to-maintain adaptive cooling channel structure for a reactor core basket as described in any one of claims 1-2, characterized in that, The ring (17) has a through groove (21) inside; The through groove (21) and the inner turbine blade assembly (19) are alternately arranged on the ring (17).

4. The easy-to-maintain adaptive cooling channel structure for a reactor core basket as described in claim 1, characterized in that, The inner cavity (12) is provided with a core stacker (22); The core stack frame (22) is located inside the ring (17).

5. The easy-to-maintain adaptive cooling channel structure for a reactor core basket as described in any one of claims 1-2, characterized in that, The core basket body (11) has a first interface group (23) on its circumferential surface.

6. The easy-to-maintain adaptive cooling channel structure for a reactor core basket as described in claim 5, characterized in that, The core basket body (11) has a second interface group (24) on its circumferential surface. The second interface group (24) is located on the surface of the core basket body (11) away from the first interface group (23).

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