Steam generating device suitable for reactor and reactor
By designing a steam generator suitable for the reactor, using an arc-shaped surface and a layout of multiple heat exchange tubes, the compatibility problem between the existing device and the horizontal reactor was solved, achieving efficient cooling and reactor miniaturization, and improving transportability.
Patent Information
- Application Number
- CN202511341270.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-18
- Publication Date
- 2025-12-30
AI Technical Summary
Existing steam generators are difficult to adapt well to horizontally designed micro-nuclear reactors, resulting in wasted space and hindering flexible reactor deployment.
A steam generator suitable for reactors was designed. The heat exchange shell has two arc-shaped surfaces that are adapted to the reactor vessel and reactor core. Multiple non-interconnected heat exchange tubes are installed, and efficient coolant heat exchange is achieved through water inlet and gas outlet connection pipes, which increases the heat exchange volume and makes the layout compact.
It improves cooling efficiency, reduces the overall size and weight of the reactor, enhances miniaturization, and ensures the reactor's transportability and structural compactness.
Smart Images
Figure CN121237463A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this application relate to the technical field of steam generating apparatus, and more specifically to a steam generating apparatus suitable for a reactor and a reactor. Background Technology
[0002] The statements herein are provided only as background information in connection with this application and do not necessarily constitute prior art.
[0003] The steam generator is a key piece of equipment connecting the primary and secondary loops of the reactor. During reactor operation, the heat generated by the reactor core is carried away by the coolant. The coolant exchanges heat with the steam generator to transfer the heat to the working fluid in the secondary loop. Its performance and safety reliability are closely related to the safe operation of the reactor.
[0004] Miniature nuclear reactor power sources require portability, which necessitates a horizontal reactor design. However, current steam generator designs are difficult to adapt well to horizontal reactor designs, hindering flexible reactor deployment. 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 steam generating device suitable for a reactor, comprising: a heat exchange shell, multiple heat exchange tubes, a water inlet pipe, multiple water inlet connection pipes, an exhaust pipe, and multiple exhaust connection pipes. The heat exchange shell includes two opposing arc-shaped surfaces, respectively adapted to the shape and size of the reactor vessel and the reactor core. The heat exchange shell forms a heat exchange chamber and a coolant inlet and a coolant outlet in fluid communication with the heat exchange chamber. The coolant inlet and coolant outlet are used to allow coolant from the reactor to flow into and out of the heat exchange chamber, respectively. The multiple heat exchange tubes are not interconnected and are disposed within the heat exchange chamber for heat exchange with the coolant. Each water inlet connection pipe is in fluid communication with the water inlet pipe and each water inlet connection pipe is in fluid communication with one heat exchange tube to supply water to the heat exchange tube through the water inlet pipe. Each exhaust connection pipe is in fluid communication with the exhaust pipe and each exhaust connection pipe is in fluid communication with one heat exchange tube to allow water vapor in the heat exchange tube to flow out through the exhaust pipe.
[0007] The steam generating device provided in the embodiments of this application, by configuring the heat exchange shell as including two opposing arc-shaped surfaces, respectively adapted to the shape and size of the reactor vessel and the reactor core, facilitates maximizing the volume of the heat exchange shell, making full use of the space inside the reactor vessel, and improving heat exchange with the primary coolant in the reactor. Furthermore, this configuration also facilitates a more compact internal structure layout, enabling high integration of the steam generating device with other internal structures, thereby reducing the overall size and weight of the reactor and improving its miniaturization level. Moreover, by configuring multiple non-interconnected heat exchange tubes in the heat exchange chamber, including an inlet water pipe and multiple inlet connecting pipes fluidly connected to it (each inlet connecting pipe fluidly connected to one heat exchange tube), and an outlet water pipe and multiple outlet connecting pipes fluidly connected to it (each outlet connecting pipe fluidly connected to one heat exchange tube), the coolant entering the heat exchange chamber can exchange heat with the water flowing into the multiple heat exchange tubes, improving the cooling efficiency of the coolant. The water, after absorbing heat, is converted into steam and flows out from the outlet pipe back to the secondary loop.
[0008] Secondly, embodiments of this application provide a reactor comprising: a reactor vessel, a reactor core, and a steam generating device as provided in the first aspect of this application. The reactor vessel contains a coolant. The reactor core is coaxially disposed within the reactor vessel. The steam generating device is disposed between the reactor vessel and the reactor core, with two arc-shaped surfaces of the steam generating device facing the reactor vessel and the reactor core, respectively.
[0009] The reactor provided in the embodiments of this application, by placing the steam generating device provided in the first aspect of this application between the reactor vessel and the reactor core, with the two arc-shaped surfaces of the steam generating device facing the reactor vessel and the reactor core respectively, can make full use of the space between the reactor vessel and the reactor core, maximize the volume of the heat exchange shell, and make the layout inside the reactor vessel more compact, thereby achieving a high degree of integration between the various components inside the reactor. This helps to reduce the overall size and weight of the reactor, improve the miniaturization level of the reactor, and thus ensure the transportability of the reactor. Attached Figure Description
[0010] Other objects and advantages of this application will become apparent from the following description of embodiments of this application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of this application.
[0011] Figure 1 This is a schematic diagram of a steam generating apparatus according to an embodiment of this application;
[0012] Figure 2 This is a schematic diagram of the structure of a steam generator according to one embodiment of this application from another perspective;
[0013] Figure 3 For along Figure 2A cross-sectional view cut by CC.
[0014] Figure 4 For along Figure 2 A sectional view cut by section BB;
[0015] Figure 5 This is a schematic diagram of the structure of a heat exchange tube according to an embodiment of this application;
[0016] Figure 6 This is a schematic diagram of the structure of a heat exchange tube according to another embodiment of this application;
[0017] Figure 7 This is a cross-sectional schematic diagram of a steam generating apparatus according to an embodiment of this application, showing only one heat exchange tube;
[0018] Figure 8 yes Figure 7 A cross-sectional schematic diagram of the steam generator shown from another perspective.
[0019] Figure 9 This is a schematic diagram of a reactor according to one embodiment of this application.
[0020] Explanation of reference numerals in the attached figures:
[0021] 10. Heat exchange shell; 101. Heat exchange chamber; 11. Arc plate; 12. First plate; 13. Second plate; 20. Coolant inlet; 30. Coolant outlet; 40. Heat exchange tube; 50. Water inlet pipe; 51. Water inlet section; 52. Diverter section; 60. Water inlet connecting pipe; 70. Air outlet pipe; 80. Air outlet connecting pipe;
[0022] 1. Stack container; 2. Stack core.
[0023] 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. Detailed Implementation
[0024] 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.
[0025] 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.
[0026] The reactor vessel and core of a horizontally designed small reactor are usually cylindrical to minimize neutron leakage, facilitate manufacturing, and improve reactor structural strength. The inventors of this application have found that existing steam generators are basically regular in shape and cannot be adapted to the reactor vessel and core structure, which easily leads to a lot of wasted space and is not conducive to compact layout. Therefore, it is urgent to design a new type of steam generator so that the steam generator can be highly integrated with other structures in the reactor.
[0027] Based on this, embodiments of this application provide a steam generating apparatus suitable for reactors.
[0028] like Figures 1 to 3 As shown, Figure 1 This invention provides a schematic diagram of the structure of a steam generator according to an embodiment of the present application. Figure 2 This is a schematic diagram of the structure of a steam generator according to one embodiment of the present application from another perspective. Figure 3 For along Figure 2 A cross-sectional view cut by CC.
[0029] The steam generating apparatus for a reactor provided in the embodiments of this application may include: a heat exchange shell 10, multiple heat exchange tubes 40, a water inlet pipe 50, multiple water inlet connection pipes 60, an exhaust pipe 70, and multiple exhaust connection pipes 80. The heat exchange shell 10 includes two opposing arc-shaped surfaces, adapted to the shape and size of the reactor vessel and reactor core, respectively. The heat exchange shell 10 forms a heat exchange chamber 101, a coolant inlet 20 in fluid communication with the heat exchange chamber 101, and a coolant outlet 30. The coolant inlet 20 and coolant outlet 30 are used to allow coolant from the reactor to flow into and out of the heat exchange chamber 101, respectively. The heat exchange tubes 40 are not interconnected and are disposed within the heat exchange chamber 101 for heat exchange with the coolant. Each water inlet connection pipe 60 is in fluid communication with the water inlet pipe 50, and each water inlet connection pipe 60 is in fluid communication with one heat exchange tube 40 to supply water to the heat exchange tube 40 through the water inlet pipe 50. Each outlet pipe 80 is in fluid communication with the outlet pipe 70, and each outlet pipe 80 is in fluid communication with a heat exchange pipe 40, so that water vapor in the heat exchange pipe 40 flows out from the outlet pipe 70.
[0030] The steam generating device provided in the embodiments of this application, by configuring the heat exchange shell 10 to include two opposing arc-shaped surfaces, respectively adapted to the shape and size of the reactor vessel and the reactor core, forms an external shape that can highly adapt to the reactor vessel and the reactor core. This facilitates maximizing the volume of the heat exchange shell, allowing for full utilization of the space within the reactor vessel, resulting in a more compact layout. It also facilitates high integration of the steam generating device with other structures within the reactor, thereby reducing the overall size and weight of the reactor and improving the miniaturization level of the reactor. Furthermore, by configuring the heat exchange chamber 1... 01. Multiple heat exchange tubes 40 that are not interconnected are provided, along with an inlet pipe 50 and multiple inlet connecting pipes 60 that are fluidly connected to it. Each inlet connecting pipe 60 is fluidly connected to one heat exchange tube 40. Additionally, an outlet pipe 70 and multiple outlet connecting pipes 80 that are fluidly connected to it are provided. Each outlet connecting pipe 80 is fluidly connected to one heat exchange tube 40. This allows the coolant entering the heat exchange chamber 101 to exchange heat with the water flowing into the multiple heat exchange tubes 40, which helps to improve the cooling efficiency of the coolant. The water that has absorbed heat is converted into water vapor and flows out from the outlet pipe 70, so that it can be transported to the secondary circuit to do work.
[0031] In particular, since the coolant in the reactor is at atmospheric pressure, and water and the water vapor generated by water vaporization have high pressure, the steam generating device provided in this application is configured such that the coolant flows in the heat exchange chamber 101 and the water used to exchange heat with the coolant flows in the heat exchange tube 40. Therefore, the design pressure of the heat exchange shell 10 is relatively low. Furthermore, by configuring the heat exchange shell 10 into a structure including two oppositely arranged arc-shaped surfaces, the wall thickness of the heat exchange shell 10 will not be too large, thereby helping to reduce the weight of the steam generating device and reduce economic costs.
[0032] like Figure 1 As shown, in some embodiments, the heat exchange shell 10 includes two opposing arcuate plates 11, two opposing first plates 12, and two opposing second plates 13. The two arcuate plates 11, the two first plates 12, and the two second plates 13 together form a heat exchange chamber 101. The two first plates 12 are connected to the two arcuate plates 11 in the circumferential direction; the two second plates 13 are connected to the two arcuate plates 11 and the two first plates 12 on both axial sides of the two arcuate plates 11; the two arcuate plates 11 each form two arcuate surfaces.
[0033] In this embodiment, the heat exchange shell 10 includes two opposing arc plates 11, so that the heat exchange shell 10 can be adapted to the shape and size of the reactor vessel and the reactor core, respectively. Then, two opposing first plates 12 are connected to the two arc plates 11 in the circumferential direction, and two opposing second plates 13 are connected to the two arc plates 11 and the two first plates 12 on both sides of the axial direction of the two arc plates 11, so that the formed heat exchange chamber 101 can be adapted to the reactor vessel and the reactor core, thereby realizing the full utilization of the space inside the reactor vessel for heat exchange.
[0034] In some embodiments, the arc diameters of the two arc plates 11, which are adapted to the shape and size of the reactor container and the reactor core, are set to 2800 mm and 1550 mm, respectively, the height is set to 1000 mm, and the length is set to 2100 mm. Two first plates 12 are welded to the two arc plates 11 to achieve a seal, and two second plates 13 are welded to the two arc plates 11 and the two first plates 12 to achieve a seal. The thickness of the two first plates 12 and the two second plates 13 is set to 50 mm.
[0035] The heat exchange tubes inside a steam generator are usually arranged in a spiral-rising coil structure. However, since the heat exchange chamber 101 of the steam generator of this application is formed by two oppositely arranged arc plates 11, two oppositely arranged first plates 12, and two oppositely arranged second plates 13, the conventional spiral-rising coil structure is difficult to be applied to the heat exchange chamber 101 of this structure. Furthermore, it is quite difficult to process the spiral-rising coil structure into a heat exchange chamber 101 that can be applied to this structure.
[0036] like Figure 4 As shown, Figure 4 For along Figure 2 In the cross-sectional view of BB section, in order to address the above-mentioned problems, in some embodiments of this application, each heat exchange tube 40 is arranged in the same plane, and multiple heat exchange tubes 40 are stacked in a direction perpendicular to the plane. In such embodiments, the arrangement of heat exchange tubes 40 greatly reduces the design and processing difficulty of heat exchange tubes, and is conducive to compact layout and improved heat exchange efficiency.
[0037] In some embodiments, each heat exchange tube 40 extends in a plane parallel to the plane of the first plate 12, and multiple heat exchange tubes 40 are stacked in a direction perpendicular to the first plate 12. When the steam generating device of this embodiment is applied in a transportable micro-nuclear reactor power source, two steam generating devices are arranged opposite each other in the reactor vessel, and each first plate 12 is parallel to the horizontal plane, so that the heat exchange tubes 40 are arranged in the horizontal plane.
[0038] During the heat exchange process between the water in the heat exchange tube 40 and the coolant, some of the water is vaporized into water vapor. The fluid in the heat exchange tube 40 is a gas-liquid two-phase flow. Since the gas has a lower density and tends to flow upward, while the liquid water has a higher density and tends to flow downward, if the heat exchange tube 40 is set to extend in a plane parallel to the plane of the second plate 13, when the flow velocity of the gas-liquid two-phase flow is relatively slow, gas is likely to accumulate at the top of the heat exchange tube 40 and liquid water is likely to accumulate at the bottom, resulting in unstable flow or flow obstruction. This is not conducive to ensuring heat exchange efficiency. Therefore, setting the heat exchange tube 40 to extend in a plane parallel to the plane of the first plate 12, and stacking multiple heat exchange tubes 40 in a direction perpendicular to the first plate 12, is beneficial to ensure that the gas-liquid two-phase flow can flow stably in the heat exchange tube 40.
[0039] like Figure 5 As shown, Figure 5 The diagram shows a structural schematic of a heat exchange tube 40 according to an embodiment of the present application. In some embodiments, each heat exchange tube 40 can be coiled from the outside to the inside in the same plane, wherein the outermost end is connected to the water inlet connection pipe 60 and the innermost end is connected to the air outlet connection pipe 80.
[0040] In this embodiment, the heat exchange tube 40 is arranged to coil from the outside to the inside in the same plane to increase the heat exchange area and enhance the heat transfer efficiency, so that the coolant can fully exchange heat with the water in the heat exchange tube 40. Furthermore, by connecting the outermost end of the heat exchange tube 40 to the water inlet connection pipe 60 and the innermost end to the air outlet connection pipe 80, water can flow into the heat exchange tube 40 from the outermost end and fully exchange heat with the coolant during the process of flowing through the coiled tube section from the outside to the inside, so as to realize the effective utilization of the coolant's heat, allowing the water to be fully vaporized into water vapor and flow out from the innermost end for delivery to the secondary loop to do work.
[0041] like Figure 6 As shown, Figure 6 The diagram shows a structural schematic of a heat exchange tube 40 according to another embodiment of this application. In some embodiments, each heat exchange tube 40 may extend in a bend within the same plane, forming a "bow" shape, wherein the two ends are respectively connected to a water inlet connection pipe 60 and an air outlet connection pipe 80.
[0042] In some embodiments, the bends in the heat exchange tube 40 are rounded to reduce fluid resistance and further prevent fluid flow from being obstructed within the heat exchange tube 40.
[0043] In some embodiments, the heat exchange tube 40 can be made of T91 alloy tubing with a specification of φ16×2.5mm, and the minimum inner diameter of the heat exchange tube 40 is 40mm. When the heat exchange tubes 40 are arranged to coil from the outside to the inside in the same plane, the center distance between adjacent tube segments is 40mm, and the spacing between tube segments is 24mm. A total of 28 heat exchange tubes 40 are provided, with an average length of 20.9m. When stacked, the center distance between adjacent heat exchange tubes 40 is 24mm, and the spacing between them is 8mm.
[0044] like Figure 4 As shown, in some embodiments, for the overall structure formed by stacking multiple heat exchange tubes 40, the ends facing the inner surfaces of the two arc plates 11 are respectively matched with the shapes of the corresponding arc plates 11, so that the overall structure formed by stacking heat exchange tubes 40 can be adapted to the specific shape of the heat exchange chamber 101, thereby making full use of the space of the heat exchange chamber 101, which is beneficial to increasing the length of the heat exchange tubes 40, thereby maximizing the heat exchange efficiency.
[0045] In some embodiments, there are two vent pipes 70. A portion of the plurality of vent pipes 80 is connected to one of the vent pipes 70, and the remaining portion of the plurality of vent pipes 80 is connected to the other vent pipe 70. The embodiments of this application use two vent pipes 70 to divert the water vapor flowing from the multiple heat exchange tubes 40, preventing flow obstruction due to excessive pressure when all water vapor flows out from a single vent pipe 70. Furthermore, if only one vent pipe 70 is provided, the vent pipe 70 needs to have a large inner diameter and wall thickness, occupying space; while providing more vent pipes 70 would lead to more complex external interfaces, which is not conducive to a compact layout. Therefore, providing two vent pipes 70 is a relatively optimal choice.
[0046] like Figure 1 , Figure 7 and Figure 8 As shown, Figure 7 This is a cross-sectional schematic diagram of a steam generating apparatus according to an embodiment of this application, showing only one heat exchange tube; Figure 8 yes Figure 7 This is a cross-sectional schematic diagram of the steam generator from another perspective. In some embodiments, the exhaust pipe 70 and the water inlet pipe 50 are disposed on the same second plate 13, wherein the exhaust pipe 70 is located above the water inlet pipe 50 and above each heat exchange tube 40. The coolant inlet 20 is disposed on another second plate 13 and is opposite to the exhaust pipe 70. The coolant outlet 30 is disposed on the lower first plate 12 and is disposed adjacent to the water inlet pipe 50.
[0047] In this embodiment, by setting the vent pipe 70 and the water inlet pipe 50 on the same second plate 13, it is convenient to lead the vent pipe 70 and the water inlet pipe 50 out from inside the pile. By positioning the vent pipe 70 above the inlet pipe 50 and above each heat exchange tube 40, water can flow from the lower inlet pipe 50 into the corresponding heat exchange tubes 40 via multiple inlet connection pipes 60, flowing along the extension direction of the heat exchange tubes 40. During this flow, water vaporizes into water vapor by exchanging heat with the coolant in the heat exchange chamber 101. The water vapor naturally flows upward and flows into the upper vent pipe 70 via multiple vent connection pipes 80, and is then transported to the secondary circuit to perform work. Furthermore, by setting the coolant inlet 20 on another second plate 13 and the coolant outlet 30 on the lower first plate 12, with the coolant outlet 30 adjacent to the inlet pipe 50, the coolant inlet 20 and coolant outlet 30 are diagonally positioned. This allows the coolant to descend around the chamber after flowing into the heat exchange chamber 101 from the coolant inlet 20, achieving counter-current heat exchange with the water in the heat exchange tubes 40. This effectively improves heat exchange efficiency, reduces the need for heat exchange space, and facilitates a compact layout.
[0048] In some embodiments, the vent pipe 70 is configured to be welded to the second plate 13 to achieve a seal. The dimensions of the vent pipe 70 can be set to Φ89×8mm. The line connecting the two vent pipes 70 is parallel to the first plate 12.
[0049] In some embodiments, the coolant inlet 20 and the coolant outlet 30 are configured to be welded to the second plate 13 and the first plate 12, respectively, to achieve a seal. The dimensions of the coolant inlet 20 and the coolant outlet 30 can be set to Φ120×5mm. The temperature range of the coolant inlet 20 and the coolant outlet 30 is controlled between 300℃ and 500℃.
[0050] like Figure 7 and Figure 8 As shown, in some embodiments, the water inlet pipe 50 includes an inlet section 51 and a diversion section 52. The inlet section 51 and the diversion section 52 are integrally formed. The inlet section 51 is used to connect an external water supply device to the diversion section 52 to supply water to the diversion section 52. The diversion section 52 is configured to be in fluid communication with a plurality of water inlet connection pipes 60 and is configured to evenly distribute the water supplied by the inlet section 51 to each water inlet connection pipe 60, so as to ensure that the water flow rate entering each water inlet pipe 50 is uniform, thereby ensuring heat exchange efficiency.
[0051] In some embodiments, the water inlet 51 is sized to be Φ50×4mm. The diversion section 52 may be welded to the second plate 13 to achieve a seal.
[0052] Embodiments of this application also provide a reactor, such as Figure 9 As shown, Figure 9This diagram illustrates the structure of a reactor according to one embodiment of the present application, which includes: a reactor vessel 1, a reactor core 2, and a steam generating device provided in any embodiment of the present application. The reactor vessel 1 contains a coolant. The reactor core 2 is coaxially disposed within the reactor vessel 1. The steam generating device is disposed between the reactor vessel 1 and the reactor core 2, with its two arc-shaped surfaces facing the reactor vessel 1 and the reactor core 2, respectively.
[0053] The reactor provided in the embodiments of this application, by placing the steam generating device provided in any embodiment of this application between the reactor vessel 1 and the reactor core 2, with the two arc-shaped surfaces of the steam generating device facing the reactor vessel 1 and the reactor core 2 respectively, can make full use of the space between the reactor vessel 1 and the reactor core 2, making the layout inside the reactor vessel 1 more compact, and achieving a high degree of integration between the components inside the reactor. This helps to reduce the overall size and weight of the reactor, improve the miniaturization level of the reactor, and thus ensure the transportability of the reactor.
[0054] In some embodiments, each first plate 12 is parallel to a horizontal plane, thereby arranging the heat exchange tubes 40 in the horizontal plane. The second plate 13, where the exhaust pipe 70 and the water inlet pipe 50 are located, is positioned toward the core outlet side, thereby facilitating the outward extension of the exhaust pipe 70 and the water inlet pipe 50 from inside the reactor.
[0055] In some embodiments, both the reactor vessel 1 and the reactor core 2 are configured as cylindrical structures, such that the two arc-shaped surfaces of the steam generator can be adapted to the reactor vessel 1 and the reactor core 2 respectively.
[0056] In some embodiments, there are two steam generators, which are arranged radially opposite each other between the reactor vessel 1 and the reactor core 2 to form a symmetrical structure. This structure is used to balance the center of gravity of the reactor, which is beneficial for stable transportation and for use in applications such as underwater where the balance of the reactor's center of gravity is critical. At the same time, setting two steam generators can improve the reactor's fault tolerance, so that normal heat exchange of the primary coolant can still be ensured even if one of the steam generators fails.
[0057] Two steam generators and the reactor core 2 are placed after the reactor vessel 1. The upper and lower sides of the steam generators and the reactor core 2 form two irregularly shaped spaces for installing the main pump, expansion tank, oxygen control assembly, purification assembly, valves and other equipment and connecting pipes. This further realizes the high integration between the various components of the reactor, while maintaining the relative independence between the various components by modularizing them, so as to facilitate maintenance and replacement.
[0058] 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.
[0059] 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 steam generating apparatus suitable for use in a nuclear reactor, characterized by, The heat exchange device comprises: a heat exchange shell, which comprises two oppositely arranged circular arc surfaces respectively matched with the shape and size of a reactor vessel and a reactor core of the reactor, and is arranged to form a heat exchange chamber and a coolant inlet and a coolant outlet in fluid communication with the heat exchange chamber, the coolant inlet and the coolant outlet being respectively used for flowing of the coolant in and out of the heat exchange chamber; a plurality of heat exchange pipes not in fluid communication with each other, arranged in the heat exchange chamber and used for heat exchange with the coolant; a water inlet pipe and a plurality of water inlet connecting pipes in fluid communication with the water inlet pipe, each of the water inlet connecting pipes being in fluid communication with one of the heat exchange pipes to supply water into the heat exchange pipes through the water inlet pipe; an air outlet pipe and a plurality of air outlet connecting pipes in fluid communication with the air outlet pipe, each of the air outlet connecting pipes being in fluid communication with one of the heat exchange pipes to flow water vapor in the heat exchange pipes out of the air outlet pipe.
2. The steam generating device according to claim 1, characterized in that, The heat exchange shell comprises two oppositely arranged circular arc plates, two oppositely arranged first plate bodies and two oppositely arranged second plate bodies, which together form the heat exchange chamber. The two first plate bodies are connected with the two circular arc plates in the circumferential direction of the two circular arc plates, and the two second plate bodies are connected with the two circular arc plates and the two first plate bodies on both sides of the two circular arc plates in the axial direction, and the two circular arc plates form the two circular arc surfaces respectively.
3. The steam generating device according to claim 2, wherein Each of the heat exchange pipes is arranged in the same plane, and the plurality of heat exchange pipes are stacked in a direction perpendicular to the plane.
4. The steam generating device according to claim 3, wherein Each of the heat exchange pipes extends in a plane parallel to the plane of the first plate body, and the plurality of heat exchange pipes are stacked in a direction perpendicular to the first plate body.
5. The steam generating device according to claim 3, wherein Each of the heat exchange pipes is coiled from outside to inside in the same plane, wherein the end portion located at the outermost side is connected with the water inlet connecting pipe, and the end portion located at the innermost side is connected with the air outlet connecting pipe.
6. The steam generating device according to claim 3, wherein The end portions of the plurality of heat exchange pipes stacked to form an overall structure respectively face the inner surfaces of the two circular arc plates and are matched with the shapes of the corresponding circular arc plates.
7. The steam generating device according to claim 3, wherein The number of the air outlet pipes is two, a part of the plurality of air outlet connecting pipes is in communication with one of the air outlet pipes, and the remaining part of the plurality of air outlet connecting pipes is in communication with the other air outlet pipe.
8. The steam generating device of claim 3, wherein, The air outlet pipe and the water inlet pipe are arranged in the same second plate body, wherein the air outlet pipe is located above the water inlet pipe and above each of the heat exchange pipes. The coolant inlet is arranged in the other second plate body and opposite to the air outlet pipe. The coolant outlet is formed in the lower first plate body and is adjacent to the water inlet pipe.
9. A reactor characterized by, The heat exchange device comprises: a reactor vessel, which contains a coolant; a reactor core, which is coaxially arranged in the reactor vessel; the steam generating device according to any one of claims 1-8, which is arranged between the reactor vessel and the reactor core, and two circular arc surfaces of the steam generating device respectively face the reactor vessel and the reactor core.
10. The reactor of claim 9, wherein, The number of the steam generating devices is two, and the two steam generating devices are arranged oppositely along the radial direction of the reactor vessel between the reactor vessel and the reactor core.