Current collecting device and reactor

Abstract

Embodiments of the present application relate to the technical field of nuclear reactors, and particularly relate to a flow collecting device and a reactor. The flow collecting device provided by the embodiments of the present application is configured to have a predetermined angle between a direction in which coolant in the reactor flows into the cavity and a layout direction of the device to be cooled in the reactor, so that when the device to be cooled is cooled by the coolant flowing into the cavity, the buoyancy received by the device to be cooled is reduced, and the flow collecting device can also serve as a channel for natural circulation of the coolant in an accident condition, thereby ensuring the safe operation of the reactor. Compared with the large and small grid plate header structure in the related art, the flow collecting device has a relatively simple structure, is easy to install, and does not need to use complex design and processing procedures, and can provide reliable support for the device to be cooled in the reactor, and also can realize the installation and positioning of the device to be cooled in the reactor.

Description

Technical Field

[0001] The embodiments of this application relate to the field of nuclear reactor technology, specifically to a current collector and a reactor. Background Technology

[0002] The statements herein are provided merely as background information in connection with this application and do not necessarily constitute prior art.

[0003] The pool-type sodium-cooled fast reactor is my country's fourth-generation advanced nuclear fast reactor. The entire primary loop system of the sodium-cooled fast reactor includes equipment such as the reactor core, main pumps, and intermediate heat exchangers. In order to ensure the safe operation of the reactor, it is necessary to cool the sodium-related devices in the reactor.

[0004] However, there are still many shortcomings in the current cooling methods for sodium-related devices in reactors. Summary of the Invention

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] In a first aspect, embodiments of this application provide a flow collection device, comprising: a plurality of flow collection bodies; a flow guide, the flow guide being disposed between the plurality of flow collection bodies, the plurality of flow collection bodies and the flow guide forming a cavity; the flow guide being further configured to allow coolant in the reactor to flow into the cavity at a predetermined angle to the arrangement direction of the device to be cooled in the reactor; and a plurality of support members, the plurality of support members being disposed on the plurality of flow collection bodies and configured to support the device to be cooled and to cool the device to be cooled.

[0007] The flow collector provided in the embodiments of this application, by setting the guide member so that the direction of the coolant flowing into the cavity from the reactor has a predetermined angle with the arrangement direction of the device to be cooled in the reactor, helps to reduce the buoyancy of the device to be cooled when using the coolant flowing into the cavity to cool it. At the same time, it can also serve as a channel for the natural circulation of coolant under accident conditions, ensuring the safe operation of the reactor. Compared with the large and small grid header structure used in related technologies, the flow collector of this application has a simpler structure, is easier to install, and does not require complex design and processing procedures. It can provide reliable support for the device to be cooled in the reactor, and can also realize the installation and positioning of the device to be cooled in the reactor.

[0008] Secondly, embodiments of this application also provide a reactor, comprising: at least one device to be cooled; and a current collector according to embodiments of this application, the current collector being configured to support the device to be cooled and to cool the device to be cooled.

[0009] The reactor provided in the embodiments of this application is capable of collecting coolant within the reactor, thereby enabling the coolant to cool the devices to be cooled within the reactor.

[0010] These and other advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0011] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0012] Figure 1 This is a schematic diagram of the current collection device according to an embodiment of this application.

[0013] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0014] Explanation of reference numerals in the attached figures: 10. Current collection body; 101. Cavity; 11. First body; 12. Second body; 13. Receiving slot; 20. Flow guide; 21. First coolant inlet; 30. Support component; 31. Second coolant inlet. Detailed Implementation

[0015] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0016] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0017] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning as understood by a person with ordinary skills in the field to which this application pertains.

[0018] In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In related technologies, sodium-cooled fast reactors typically employ a structure of large and small grid headers to support the devices to be cooled and provide cooling channels. However, sodium-cooled fast reactors have a large number of devices to be cooled, and these devices are also quite heavy. Therefore, to ensure sufficient strength and rigidity of the support structure, the lower part of the devices to be cooled is usually installed in the small grid header. The small grid header is connected to the sleeve thread of the large grid header via cam bolts at its lower part. Based on the number of structures to be cooled in the small grid header, small grid headers can be classified into two types: seven-hole and single-hole. The seven-hole small grid header is more widely used. However, the seven-hole small grid header has a relatively complex structure and requires high machining precision. It needs to be machined using forgings, which is difficult, and the installation workload is also relatively large.

[0020] To address the aforementioned technical problems, embodiments of this application provide a current collection device. Figure 1 This is a schematic diagram of the current collection device according to an embodiment of this application, as shown below. Figure 1 As shown, the current collection device includes multiple current collection bodies 10, current guides 20, and multiple support members 30.

[0021] In some embodiments, the flow guide 20 is disposed between a plurality of flow collectors 10, and the plurality of flow collectors 10 and the flow guide 20 form a cavity 101. The flow guide 20 is also configured to allow the coolant in the reactor to flow into the cavity 101 at a predetermined angle to the arrangement direction of the device to be cooled in the reactor. A plurality of support members 30 are disposed on the plurality of flow collectors 10 and are configured to support the device to be cooled and to cool the device to be cooled.

[0022] The flow collector provided in the embodiments of this application, by setting the flow guide 20 such that the direction of the coolant flowing into the cavity 101 in the reactor has a predetermined angle with the arrangement direction of the device to be cooled in the reactor, helps to reduce the buoyancy of the device to be cooled when using the coolant flowing into the cavity 101 to cool it. At the same time, it can also serve as a channel for the natural circulation of coolant under accident conditions, ensuring the safe operation of the reactor. Compared with the large and small grid header structure used in related technologies, the flow collector of this application has a simpler structure, is easier to install, and does not require complex design and processing procedures. It can provide reliable support for the device to be cooled in the reactor, and can also realize the installation and positioning of the device to be cooled in the reactor.

[0023] In some embodiments, the current collection device provided in this application can be applied to a sodium-cooled fast reactor to collect the coolant in the sodium-cooled fast reactor so that the coolant can cool the device to be cooled.

[0024] In some embodiments, such as Figure 1 As shown, the flow guide 20 can be fixedly connected to multiple flow collectors 10, for example, the flow guide 20 can be welded to multiple flow collectors 10, and this application does not limit this.

[0025] In some embodiments, the guide member 20 can be a cylindrical structure and integrally formed.

[0026] In other embodiments, the flow guide 20 may include multiple flow guide bodies, and the multiple flow guide bodies are sequentially fixedly connected to form an integral structure.

[0027] In some embodiments, the direction in which the coolant in the reactor flows into the cavity via the guide member 20 is at a predetermined angle between the direction of the flow and the arrangement direction of the cooling device in the reactor, which can be in the range of 0-180°, for example, it can be any angle such as 60° or 90°, and this application does not limit it.

[0028] In some embodiments, such as Figure 1 As shown, the current collection body 10 includes a first body 11 and a second body 12. The first body 11 and the second body 12 respectively form a plurality of receiving slots 13, and a plurality of support members 30 are connected to the first body 11 and the second body 12 through the receiving slots 13.

[0029] The current collection device provided in the embodiments of this application sets the current collection body 10 into a structure including a first body 11 and a second body 12, and provides a plurality of receiving grooves 13 on the first body 11 and the second body 12 respectively, so that it can be stably connected with a plurality of support members 30 and keep the support members 30 stable during the flow of coolant.

[0030] In some embodiments, the shape of the receiving groove 13 can be configured to match the shape of the support member 30 to ensure the stability of the connection. In such embodiments, if the support member 30 is a cylindrical structure, the bottom wall of the receiving groove 13 can be set as an arc shape; if the support member 30 is a rectangular structure, the bottom wall of the receiving groove 13 can be set as a rectangle.

[0031] In some embodiments, those skilled in the art can determine the size and processing method of the first body 11 based on experience. This application does not limit this. For example, the thickness of the first body 11 and the second body 12 can be 90 mm, and the first body 11 and the second body 12 can be processed by forging.

[0032] In some embodiments, the flow guide 20 is arranged along the axial direction of the reactor so that the coolant in the reactor can flow smoothly through the flow guide 20 into the cavity 101 formed by the flow collector 10 and the flow guide 20.

[0033] In some embodiments, such as Figure 1 As shown, the flow guide 20 forms multiple first coolant inlets 21, through which coolant in the reactor flows into the cavity 101.

[0034] In some embodiments, the first coolant inlet 21 may be configured as a rectangular opening, a circular opening, etc., and this application does not limit this.

[0035] In some embodiments, a plurality of support members 30 are arranged parallel to the flow guide member 20 to securely support the cooling device within the reactor.

[0036] In the embodiments of this application, the flow guide 20 is arranged along the axial direction of the reactor. Therefore, when the coolant flows into the cavity 101 through the first coolant inlet 21, the coolant flows in from the side of the cavity 101. The support 30 is arranged parallel to the flow guide 20. Then, the arrangement direction of the device to be cooled supported by the support 30 is also parallel to the flow guide 20. In such an embodiment, the coolant flows in from the side of the cavity 101 instead of flowing in through the bottom of the device to be cooled. This helps to reduce the buoyancy of the coolant on the device to be cooled, so that the support 30 can stably support the device to be cooled.

[0037] In some embodiments, the plurality of supports 30 are configured to accommodate the device to be cooled and to allow coolant from the cavity 101 to flow into its interior, thereby cooling the device to be cooled.

[0038] In some embodiments, the plurality of supports 30 are configured to allow different flow rates of coolant into them in order to meet the cooling requirements of different devices to be cooled.

[0039] In some embodiments, each support member 30 is provided with at least one second coolant inlet 31, through which coolant in the cavity 101 flows into the support member 30 to cool the device to be cooled supported by the support member 30.

[0040] The flow collection device provided in the embodiments of this application provides one or more second coolant inlets 31 on each support member 30. In this way, the flow rate of coolant flowing into the support member 30 can be determined according to the number of second coolant inlets 31 on the support member 30, thereby determining the cooling capacity of the support member 30 for the device to be cooled, so as to facilitate the placement of cooling devices with different cooling requirements on a suitable support member 30.

[0041] In some embodiments, the dimensions of the second coolant inlets 31 formed on different supports 30 may be the same or different, and this application does not limit this.

[0042] In some embodiments, the second coolant inlet 31 may be configured as a rectangular opening, a circular opening, etc., and this application does not limit this.

[0043] In some embodiments, the multiple supports 30 are configured with different sizes, which can meet the cooling requirements of devices of different sizes in the reactor, and at the same time enable the devices to be cooled to be placed on the support 30 of the corresponding size, which helps to avoid placing the devices to be cooled on the wrong support 30.

[0044] In some embodiments, the dimensions of the current collector and the current guide 20 can be determined based on the maximum size and shape of the device to be cooled, and the dimensions of the support 30 can be determined based on the dimensions of the partial structure of the device to be cooled disposed within the support 30, so as to ensure that multiple devices to be cooled within the sodium-cooled fast reactor can be supported smoothly.

[0045] An embodiment of this application also provides a reactor, which includes: at least one device to be cooled; and a current collector according to the embodiment of this application, the current collector being configured to support the device to be cooled and to cool the device to be cooled.

[0046] The reactor provided in the embodiments of this application is capable of collecting coolant within the reactor, thereby enabling the coolant to cool the devices to be cooled within the reactor.

[0047] In some embodiments, the reactor described above may be a sodium-cooled fast reactor.

[0048] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A current collecting device, characterized in that, It includes: Multiple stream collection entities, The flow guide is disposed between the plurality of flow collecting bodies. Multiple flow collection bodies and the flow guide form a cavity, and the flow guide is further configured to allow coolant in the reactor to flow into the cavity at a predetermined angle to the arrangement direction of the cooling device in the reactor. Multiple support members are disposed on multiple current collection bodies and configured to support the device to be cooled and to cool the device to be cooled.

2. The current collection device according to claim 1, characterized in that, The flow guide is arranged along the axial direction of the reactor.

3. The current collection device according to claim 2, characterized in that, The flow guide forms multiple first coolant inlets, through which coolant in the reactor flows into the cavity.

4. The current collection device according to claim 1 or 2, characterized in that, The plurality of the support members are arranged in parallel with the flow guide member.

5. The current collection device according to claim 1, characterized in that, The plurality of said supports are configured to accommodate the device to be cooled and to allow the coolant in the cavity to flow into it, thereby cooling the device to be cooled.

6. The current collection device according to claim 5, characterized in that, The multiple supports are configured to allow different flow rates of coolant into them.

7. The current collection device according to claim 6, characterized in that, Each of the supports has at least one second coolant inlet, through which the coolant in the cavity flows into the support to cool the device supported by the support.

8. The current collection device according to claim 6, characterized in that, The multiple support members are configured to have different sizes.

9. The current collection device according to any one of claims 1-8, characterized in that, The collection body includes a first body and a second body. The first body and the second body each form a plurality of receiving slots, and the plurality of support members are connected to the first body and the second body through the receiving slots.

10. A reactor, characterized in that, It includes: At least one device to be cooled; The current collection device according to any one of claims 1-9, wherein the current collection device is configured to support the device to be cooled and to cool the device to be cooled.

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