Offshore nuclear power platform and reactor-compartment arrangement structure of offshore nuclear power platform

Abstract

The present application discloses an offshore nuclear power platform and a reactor-compartment arrangement structure of the offshore nuclear power platform. The reactor-compartment arrangement structure comprises a first partition member, a second partition member, and a third partition member. The first partition member is horizontally arranged within a reactor compartment and divides the reactor compartment into an upper space and a first space. The second partition member is connected to the first partition member and located in the first space, and divides the first space into a second space and an installation space. The third partition member is located within the second space and connected to the first partition member and / or the second partition member, so as to divide the second space into a suppression pool space and at least one corner space. The suppression pool space is disposed along the periphery of the installation space, and the corner space is located on the outer side of the suppression pool space away from the installation space. The present application achieves a compact reactor compartment structure, effectively reducing the weight of the reactor compartment structure and lowering manufacturing difficulty.

Description

Offshore nuclear power platform and reactor compartment layout structure of offshore nuclear power platform Technical Field

[0001] The present application relates to the technical field of reactor compartment layout, and in particular to an offshore nuclear power platform and a reactor compartment layout structure of the offshore nuclear power platform. Background Art

[0002] The reactor compartment is the core of the offshore nuclear power platform. It is mainly equipped with the primary circuit system and its nuclear auxiliary system and dedicated safety system, etc. It includes a complete set of primary circuit main equipment, some auxiliary equipment and dedicated safety equipment. The realization and safety of its system functions directly affect nuclear safety. The reactor compartment is located in the middle of the platform. Its size, weight and center of gravity directly affect the cost and performance of the platform. It is one of the important factors affecting the overall indicators of the platform, such as stability, draft, and speed. The reactor building layout of large-scale pressurized water reactor nuclear power plants on land generally adopts a cylindrical layout structure. For offshore nuclear power platforms, if the layout method of the onshore reactor building is adopted, the following problems will arise:

[0003] The structure is difficult to realize. The cabin of the offshore nuclear power platform generally adopts a flat steel structure. The cylindrical design will increase the difficulty of processing and manufacturing; the layout is not compact enough. The site of the onshore nuclear power plant is large and there are no special restrictions on the layout space, while the layout space of the offshore nuclear power platform is limited. It is necessary to adopt a compact layout as much as possible to improve space utilization; shielding is difficult to realize. The radiation shielding function is generally achieved by concrete structures of sufficient thickness on land nuclear power plants, while concrete cannot be used on offshore nuclear power platforms, and the design of radiation protection measures is challenging. Summary of the Invention

[0004] The technical problem to be solved by the present application is to provide an offshore nuclear power platform and a reactor compartment arrangement structure of the offshore nuclear power platform.

[0005] The technical solution adopted by this application to solve its technical problems is:

[0006] A reactor compartment layout structure for an offshore nuclear power platform is constructed, comprising:

[0007] a first partition member, the first partition member being horizontally disposed in the reactor compartment to partition the reactor compartment into an upper space and a first space located below the upper space;

[0008] a second partition member connected to the first partition member and located in the first space to partition the first space into a second space and an installation space for installing a main device; and

[0009] a third partitioning member located in the second space and connected to the first partitioning member and / or the second partitioning member to divide the second space into a suppression pool space and at least one corner space;

[0010] The pressure suppression pool space is arranged around the installation space, and the corner space is located outside the pressure suppression pool space away from the installation space.

[0011] In some embodiments, a clearance channel is formed in the middle of the first partition member for connecting the installation space with the upper space, and the second partition member includes a connecting plate and a base plate, the connecting plate is connected to the inner periphery of the first partition member, and the base plate is connected to an end of the connecting plate away from the first partition member, and the base plate and the connecting plate partition member define the installation space;

[0012] The installation space includes an installation chamber, a pressure vessel accommodating tank and two steam generator accommodating tanks. Part of the wall surface of the base plate is recessed downward to form a partition member for the pressure vessel accommodating tank and the two steam generator accommodating tanks. The pressure vessel accommodating tank is located at the central axis of the reactor compartment layout structure, and the two steam generator accommodating tanks are symmetrically arranged with the pressure vessel accommodating tank as the center; the upper end surface of the base plate and the connecting plate define the installation chamber, and the installation chamber is respectively communicated with the pressure vessel accommodating tank and the two steam generator accommodating tanks.

[0013] In some embodiments, the installation chamber includes a pressurizer chamber and a diamond-shaped main chamber, the main chamber is connected to the pressurizer chamber, the pressure vessel accommodating tank and the two steam generator accommodating tanks are both connected to the main chamber, and the two steam generator accommodating tanks are formed on one of the diagonals of the main chamber;

[0014] The main equipment includes a pressurizer, a pressure vessel, two steam generators and two main pumps; the pressure vessel and the steam generator are both arranged in the main chamber, and at least partially extend into the pressure vessel accommodating tank and the steam generator accommodating tank respectively; the main pump is arranged in the main chamber, and is symmetrically arranged on another diagonal line of the main chamber with the pressure vessel accommodating tank as the center; the pressurizer is arranged in the pressurizer chamber, and the projection of the pressurizer in the vertical direction is located on one of the symmetry lines of the reactor compartment.

[0015] In some embodiments, the pressure suppression pool space stores pressure suppression pool water, and the water surface of the pressure suppression pool water separates the pressure suppression pool space into water space and air space. In the initial state, the water surface of the pressure suppression pool is flush with the lower end surface of the installation chamber, so that the water space is surrounded by the pressure vessel storage tank and the two steam generator storage tanks; the upper end surface of the air space is flush with the upper end surface of the installation chamber, so that the air space is surrounded by the installation chamber.

[0016] In some embodiments, the pressure vessel accommodating tank is connected to the pressure suppression tank space through a pipeline.

[0017] In some embodiments, the corner space includes a main space and a personnel passage connected to the main space, and the personnel passage is located above the main space and connected to the main space.

[0018] In some embodiments, the reactor compartment layout structure of the offshore nuclear power platform further includes a shielding cover, which is disposed in the installation chamber, the main equipment is passed through the shielding cover, and the horizontal cross-section of the shielding cover is adapted to the horizontal cross-section of the installation chamber.

[0019] In some embodiments, the upper end surface of the shielding cover is higher than the upper end surface of the first partition member, and the offshore nuclear power platform reactor compartment layout structure also includes a grid platform, which is arranged on the first partition member and the shielding cover, and its lower end is respectively connected to the upper end surface of the first partition member and the upper end surface of the shielding cover.

[0020] In some embodiments, the reactor compartment layout structure of the offshore nuclear power platform also includes a plurality of off-core detector layout components, each of which has a longitudinal channel for arranging off-core detectors formed therein, and the off-core detector layout components are arranged at intervals on the circumference of the pressure vessel accommodating tank.

[0021] In some embodiments, the number of the corner spaces is two, and the two corner spaces are centrally symmetrically arranged along the central axis of the reactor compartment arrangement structure of the offshore nuclear power platform;

[0022] And / or, the reactor compartment arrangement structure of the offshore nuclear power platform further includes a safety injection system for replenishing water to the primary circuit, the safety injection system includes a recirculation filter, and the recirculation filter is arranged in the pool water of the suppression pool space;

[0023] And / or, the corner space is arranged with a medium-pressure injection tank and a regenerative heat exchanger that have no height requirements;

[0024] And / or, a ladder is provided in the corner space for workers to move to the upper space.

[0025] An offshore nuclear power platform is constructed, comprising a cabin and any one of the above-mentioned offshore nuclear power platform reactor compartment arrangement structures, wherein the offshore nuclear power platform reactor compartment arrangement structure is arranged in the cabin.

[0026] This application has at least the following beneficial effects:

[0027] The present application constructs a reactor compartment arrangement structure in which a suppression pool is arranged around the installation space, thereby making the reactor compartment structure more compact; and the water in the suppression pool is arranged around the reactor, forming a primary shield for the core, which can reduce the shielding weight; at the same time, the suppression pool space and the reactor compartment share part of the wall surface, which can effectively reduce the weight of the reactor compartment structure and reduce the manufacturing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0029] FIG1 is a schematic structural diagram of a reactor compartment arrangement structure of an offshore nuclear power platform according to an embodiment of the present application;

[0030] FIG2 is a schematic structural diagram of the wall of the reactor compartment arrangement structure of the offshore nuclear power platform shown in FIG1 ;

[0031] FIG3 is a top view of the reactor compartment arrangement structure of the offshore nuclear power platform shown in FIG1 ;

[0032] FIG4 is an enlarged view of the structure of the P portion shown in FIG1 ;

[0033] FIG5 is a schematic structural diagram of the wall and the external detector arrangement components of the reactor compartment arrangement structure of the offshore nuclear power platform shown in FIG1 . DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of this application, the specific implementation methods of this application are now described in detail with reference to the accompanying drawings.

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside", "inside", "outside", etc. are based on the directions or positional relationships shown in some of the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present application. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or one or more intervening elements may also be present.

[0036] It should also be noted that, unless otherwise clearly stipulated and limited, terms such as "install", "connect", "connect", "fix", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0037] The terms "first," "second," etc., are used solely to facilitate description of the present technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of such features. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0038] Figures 1 and 2 show an arrangement structure of a reactor compartment of an offshore nuclear power platform in an embodiment of the present application, which can be applied to an offshore nuclear power platform. The offshore nuclear power platform includes a cabin, in which the reactor compartment is arranged.

[0039] The reactor compartment is generally cuboid in shape and includes a first partition member 101, a second partition member 102, and a third partition member 103. The first partition member 101 is horizontally disposed within the reactor compartment, dividing the reactor compartment into an upper space 40 and a first space below the upper space 40. The second partition member 102 is connected to the first partition member 101 and is located within the first space, dividing the first space into a second space and an installation space 10. The third partition member 103 is located within the second space and is connected to the first partition member 101 and / or the second partition member 102 to divide the second space into a suppression tank space 20 and at least one corner space 30.

[0040] The installation space 10 is located at the center of the reactor compartment and is used for arranging and installing the main equipment 50. The suppression pool space 20 is arranged around the installation space 10 to accommodate the suppression pool water. The corner space 30 is located outside the suppression pool space 20 away from the installation space 10 and is used to arrange other equipment that does not require height, such as medium-pressure injection boxes and regenerative heat exchangers. The upper space 40 is located above the installation space 10, the suppression pool space 20 and the corner space 30, and is connected to the installation space 10 and the corner space 30. It is used to accommodate part of the main equipment 50 that is higher and extends to the upper space 40, as well as to arrange equipment that needs to be arranged at a high position, such as the containment heat extraction heat exchanger, air ducts, cable trays, etc.

[0041] It should be understood that the first partition member 101, the second partition member 102, and the third partition member 103 are all disposed within a chamber enclosed by walls and are fixed to the chamber. In some embodiments, the first partition member 101, the second partition member 102, and the third partition member 103 may be a wall, a plate, or other partitioning structure. In this embodiment, the reactor chamber is a cubical chamber.

[0042] The reactor compartment is provided with main equipment 50, shielding cover 60, grid platform 70, off-core detector arrangement component 80 and other components. The main equipment 50, shielding cover 60, grid platform 70 and off-core detector arrangement component 80 are all fixed on the first partition component 101 and / or the second partition component 102 and / or the third partition component 103 to improve the stability of the reactor compartment, facilitate lifting and installation, and operation under shaking and impact conditions such as waves.

[0043] The main equipment 50 includes a reactor pressure vessel 51, a pressurizer 54, two steam generators 52 and two main pumps 53. The reactor pressure vessel 51, the pressurizer 54, the two steam generators 52 and the two main pumps 53 are all arranged in the installation space 10, and the upper end of each equipment extends into the upper space 40.

[0044] The first partition member 101 is plate-shaped, and a clearance channel is formed in the middle thereof for connecting the installation space 10 with the upper space 40 , so that the upper end of each device in the main device 50 can extend to the upper space 40 .

[0045] The second partition member 102 includes a base plate 1021 and a connecting plate 1022. The connecting plate 1022 is in the shape of a vertically extending tube, the upper end of which is connected to the inner periphery of the first partition member 101, and the lower end (i.e., the end of the connecting plate 1022 away from the first partition member 101) is connected to the base plate 1021. The base plate 1021 and the connecting plate 1022 together define the installation space 10.

[0046] The installation space 10 includes an installation chamber 11, a pressure vessel accommodating tank 12, and two steam generator accommodating tanks 13. The pressure vessel accommodating tank 12 and the two steam generator accommodating tanks 13 are formed by the downward depression of a portion of the wall surface of the base plate 1021. The upper end surface of the base plate 1021 and the connecting plate 1022 together define the installation chamber 11, which is respectively connected to the pressure vessel accommodating tank 12 and the two steam generator accommodating tanks 13.

[0047] The pressure vessel accommodating tank 12 and the two steam generator accommodating tanks 13 are both cylindrical. The reactor pressure vessel 51 is at least partially arranged in the pressure vessel accommodating tank 12 , and at least parts of the two steam generators 52 are respectively arranged in the two steam generator accommodating tanks 13 .

[0048] Specifically, referring to Figure 3 , the pressure vessel tank 12 is formed on the central axis of the reactor compartment, and the two steam generator tanks 13 are symmetrically arranged around the pressure vessel tank 12. The two main pumps 53 are both arranged within the installation chamber 11 and are also symmetrically arranged around the pressure vessel tank 12. This ensures that the center of gravity of the reactor compartment is on the central axis, preventing the offshore nuclear power platform from swaying or even tipping over due to waves during operation.

[0049] As shown in FIG2 , in this embodiment, the installation chamber 11 includes a main chamber 111, wherein the main chamber 111 is rhombus-shaped, and the pressure vessel accommodating tank 12 and the two steam generator accommodating tanks 13 are both connected to the main chamber 111. The reactor pressure vessel 51 is located at the intersection of the two diagonals of the rhombus-shaped main chamber 111, the two steam generators 52 are both located on one of the diagonals of the rhombus-shaped main chamber 111, and the two main pumps 53 are symmetrically arranged on the other diagonal of the rhombus-shaped main chamber 111 with the pressure vessel accommodating tank 12 as the center. This arrangement can solve the problem of the large spacing between the steam generators 52 and the large layout space required, and can reduce the size of the reactor compartment by about 30%, making the reactor compartment more compact. At the same time, it reduces the lever arm of the reactor compartment under the swaying condition of the waves, thereby improving the stability of the offshore nuclear power platform.

[0050] The installation chamber 11 also includes a pressurizer chamber 112 for accommodating the pressurizer 54. The pressurizer chamber 112 is located on one side of the main chamber 111 and communicates with the main chamber 111. The pressurizer chamber 112 is positioned so that the vertical projection of the pressurizer 54 within the pressurizer chamber 112 lies on one of the symmetry lines of the reactor compartment, further ensuring the stability of the offshore nuclear power platform.

[0051] The suppression pool space 20 is arranged around the installation space 10 so that the suppression pool water in the suppression pool space 20 can be arranged around the reactor to serve as a primary shield for the reactor, thereby reducing the shield weight.

[0052] Specifically, the surface of the suppression pool water in the suppression pool space 20 divides the suppression pool space 20 into a water space 21 containing water and an air space 22 without water. The air space 22 is connected to the water space 21 and is located above the water space 21 .

[0053] As shown in Figures 1 and 2, in this embodiment, in the initial state, the water surface of the suppression pool is flush with the lower end surface of the installation chamber 11, and the upper end surface of the air space 22 (the upper end surface of the suppression pool space 20) is flush with the upper end surface of the installation chamber 11. This results in the water space 21 surrounding the circumference of the pressure vessel tank 12 and the two steam generator tanks 13, while the air space 22 surrounds the circumference of the installation chamber 11. The water space 21 highly overlaps the reactor core (or the pressure vessel tank 12), and the suppression pool water also serves as a primary shield for the active section of the core, reducing shielding weight.

[0054] It should be noted that the water space 21 and the air space 22 here are actually a connected space. The "initial state" here only represents the height state of the water surface of the suppression tank under the working condition without swinging, in order to explain the structure of the suppression tank space 20, and does not mean that the above description is fully met under the swinging working condition.

[0055] The reactor compartment arrangement also includes a safety injection system for replenishing water to the primary circuit after a breach occurs, preventing the overheated core from melting. The safety injection system includes a recirculation filter for filtering impurities and debris from the water replenished to the primary circuit during the water intake process.

[0056] In some embodiments, the recirculation filter is located within the water space 21 of the suppression tank space 20, allowing the injection system to draw water directly from the suppression tank. When a breach occurs in the primary circuit, high-temperature, high-pressure water leaks from the primary circuit, transforming into water vapor. After cooling and condensing, it flows back into the suppression tank. The water in the suppression tank is then injected into the primary circuit through the recirculation filter. This entire process utilizes the principle of rising water vapor, condensing into water, and then returning by gravity, achieving passive recirculation of reactor water, significantly reducing the space and weight of the containment vessel.

[0057] In some embodiments, the pressure vessel tank 12 is connected to the water space 21 of the suppression pool space 20 through a pipe, so that the suppression pool can be integrated with the in-vessel retention technology (hereinafter referred to as IVR), and the gap between the pressure vessel tank 12 and the reactor pressure vessel 51 is used as the core flooding space. Since the water space 21 is arranged around the pressure vessel tank 12, the pressure vessel tank 12 and the water space 21 of the suppression pool space 20 are connected through a pipe to enable the introduction of suppression pool water into the reactor cavity to achieve core flooding. The suppression pool realizes the IVR function, has the advantages of compact space and light weight, and at the same time enables the suppression pool water to remove the heat dissipated by the reactor, relieving the pressure on the reactor compartment ventilation system.

[0058] As shown in Figures 1 and 2 , two corner spaces 30 are located in this embodiment, symmetrically arranged along the central axis of the reactor compartment to maintain the center of gravity of the reactor compartment and enhance the stability of the offshore nuclear power platform. Each corner space 30 includes a main space 31 and a personnel passage 32. The personnel passage 32 is located above the main space 31, with its upper and lower ends connected to the main space 31 and the upper space 40, respectively (the connection with the upper space 40 is not shown in the figure), allowing personnel to move between various spaces within the reactor compartment.

[0059] Specifically, the two corner spaces 30 are located at the right angles of the reactor compartment, and the vertical projections of the two corner spaces 30 are located on the diagonal of the vertical projection of the reactor compartment. The horizontal cross-section of the main space 31 is L-shaped, and the horizontal cross-section of the personnel passage 32 is a right triangle.

[0060] The upper end surface of the main space 31 (or the connection surface between the personnel passage 32 and the main space 31) is flush with the water surface of the suppression pool (or the upper end surface of the water space 21, or the lower end surface of the installation chamber 11) when the suppression pool is not swaying. The upper end of the personnel passage 32 is flush with the upper end surface of the installation chamber 11 (or the upper end surface of the air space 22, or the upper end surface of the suppression pool space 20) and is operatively connected to the upper space 40.

[0061] It should be noted that “operably connected to the upper space 40 ” here can be operably connected through a switchable gate, or can be connected through a through-port that is always open, which is not limited here.

[0062] In summary, the water space 21, the two steam generator accommodating tanks 22, the pressure vessel accommodating tank 12, and the two main spaces 31 are all at the same height, and when combined, they form a cubical space. The air space 22, the installation chamber 11, and the two personnel passageways 32 are all at the same height, and when combined, they also form a cubical space. Furthermore, the horizontal cross-sections of these two cubical spaces match.

[0063] Although the corner space 30 is arranged outside the suppression pool space 20 away from the installation space 10, since the corner space 30 is not entirely arranged in the circumferential direction outside the suppression pool space 20, the suppression pool space 20 and the containment vessel (i.e., the outer wall of the entire reactor compartment) share most of the walls, which can effectively reduce the structural weight of the reactor compartment and at the same time improve the structural strength of the suppression pool and the containment vessel.

[0064] The suppression pool space 20 is entirely circumferentially arranged around the installation space 10. In addition to shielding the reactor core and reducing structural weight, it also allows the water space 21 containing the suppression pool water to effectively serve as a support for the pressure vessel tank 12 and the two steam generator tanks 13, facilitating the design of the support structure. Furthermore, because the suppression pool space 20 shares a wall with the containment vessel, loads from the main equipment 50 can be transferred to the containment structure.

[0065] In some embodiments, the offshore nuclear power platform reactor compartment arrangement structure further includes at least one ladder 90. This ladder 90 extends upward from the self-space 31 into the personnel passage 32, with its upper end aligned with the upper end of the personnel passage 32. This allows personnel to access the upper space 40 via the ladder 90 from the self-space 31, through the personnel passage, and through the upper wall (not shown) of the suppression pool space 20. In this embodiment, there are two ladders 90, one located in each of the two corner spaces 30.

[0066] As shown in Figure 1 , the shielding cover 60 is disposed within the installation chamber 11 and is used to shield a portion of the main equipment structures within the installation chamber 11. The main equipment 50, including the reactor pressure vessel 51, steam generator 52, main pump 53, and pressurizer 54, are all installed within the shielding cover 60. The lower ends of the shielding cover 60 extend outside the shielding cover 60 and are disposed on the lower end surface of the installation chamber 11 or within the pressure vessel accommodating tank 12 and the steam generator accommodating tank 13, respectively. The upper ends of the shielding cover 60 extend outside the shielding cover 60 and into the upper space 40. This facilitates shielding, simplifies the shielding cover 60 and its supporting structure, and further reduces shielding weight.

[0067] In some embodiments, the horizontal cross-section of the shielding cover 60 matches the horizontal cross-section of the installation chamber 11. The upper end surface of the shielding cover 60 is slightly higher than the upper end surface of the first partition member 101 to facilitate fixing the grid platform 70.

[0068] The grid platform 70 includes a platform body 71 and a plurality of cross beams 72 fixed on the platform body 71. The grid platform 70 is arranged on the first partition member 101 and the shielding cover 60, and its lower end is connected to the upper end surface of the first partition member 101 and the upper end surface of the shielding cover 60 respectively.

[0069] Specifically, the platform body 71 is plate-shaped and is mounted on the upper surface of the shielding cover 60. Multiple crossbeams 72 are connected to the lower surface of the platform body 71 and the upper surface of the first partition member 101, securing the platform body 71 to the first partition member 101. This allows the crossbeams 72 of the grid platform 70 to serve as reinforcements rooted to the upper surface of the first partition member 101. This ensures the structural strength of both the suppression tank and the grid platform 70 while reducing the number of components and simplifying manufacturing and installation.

[0070] 4 , in some embodiments, the crossbeam 72 is formed with a plurality of through holes 721 along the thickness direction for pipes to pass through, which is beneficial for the arrangement of the pipes.

[0071] As shown in FIG5 , in some embodiments, the offshore nuclear power platform reactor compartment arrangement structure further includes a plurality of off-core detector arrangement members 80. Each off-core detector arrangement member 80 is longitudinally arranged and defines a longitudinal channel for arranging the detectors. The off-core detector arrangement members 80 are spaced apart and arranged circumferentially of the pressure vessel accommodating tank 12 in a direction parallel to the central axis of the reactor compartment.

[0072] Specifically, the off-core detector arrangement member 80 can be secured to the base plate 1021 by welding or other methods. The upper end of the off-core detector arrangement member 80 is slightly higher than the upper end surface of the first partition member 101, and the lower end mates with the lower end of the pressure vessel receiving groove 12. This simplifies the support structure of the off-core detector channel, facilitates detector installation and removal, and reduces the difficulty of lifting.

[0073] In some embodiments, the reactor compartment layout structure of the offshore nuclear power platform also includes a three-way cable bridge, which can prevent common cause failures in a small space. The main equipment of the primary circuit of the experimental reactor adopts an integrated design, which increases the challenge of physical isolation of the reactor compartment layout. The overall layout of the reactor compartment proposes a main cable tray planning technology of "columns A and B are arranged along the left and right side walls respectively, and three sets of cable trays are arranged along the top of the compartment to finally converge to a dedicated instrumentation and control system adapter box." This achieves the maximum physical isolation of the three-way cable tray in a small space and reduces the risk of common cause failures.

[0074] In some embodiments, the reactor compartment layout structure of the offshore nuclear power platform adopts a combined lifting technology of "lifting point matrix + mobile cantilever crane". The lifting point matrix has a large lifting weight, but a limited coverage range. The mobile cantilever crane is flexible in movement and has a large lifting coverage range, but the lifting weight is insufficient. The combination of the two can efficiently solve the lifting problems of equipment and shielding including the main pump in the compact space of the reactor compartment, and provide three-dimensional coverage of all items that need to be lifted in the reactor compartment.

[0075] The present application also constructs an offshore nuclear power platform, which includes a cabin and any of the above-mentioned offshore nuclear power platform reactor cabin layout structures, and the offshore nuclear power platform reactor cabin layout structure is arranged in the cabin.

[0076] It is understandable that the above embodiments only express the preferred implementation methods of the present application, and their descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the patent of the present application. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, the above technical features can be freely combined, and several variations and improvements can be made, all of which fall within the scope of protection of the present application. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present application should fall within the scope of coverage of the claims of the present application.

Claims

1. A reactor compartment layout structure for an offshore nuclear power platform, characterized in that: include: a first partition member (101), the first partition member (101) being horizontally arranged in the reactor compartment to separate the reactor compartment into an upper space (40) and a first space located below the upper space (40); a second partition member (102), the second partition member (102) being connected to the first partition member (101) and being located in the first space to separate the first space into a second space and an installation space (10) for installing a main device (50); and a third partitioning member (103), the third partitioning member (103) being located in the second space and connected to the first partitioning member (101) and / or the second partitioning member (102) to separate the second space into a suppression tank space (20) and at least one corner space (30); The pressure suppression pool space (20) is arranged around the installation space (10), and the corner space (30) is located outside the pressure suppression pool space (20) away from the installation space (10).

2. The reactor compartment layout structure of an offshore nuclear power platform according to claim 1, characterized in that: A clearance passage for connecting the installation space (10) with the upper space (40) is formed in the middle of the first partition member (101); the second partition member (102) comprises a connecting plate (1022) and a base plate (1021); the connecting plate (1022) is connected to the inner periphery of the first partition member (101); the base plate (1021) is connected to an end of the connecting plate (1022) away from the first partition member (101); the base plate (1021) and the connecting plate (1022) partition members define the installation space (10); The installation space (10) includes an installation chamber (11), a pressure vessel accommodating groove (12) and two steam generator accommodating grooves (13); a portion of the wall surface of the base plate (1021) is recessed downward to form a partitioning member for the pressure vessel accommodating groove (12) and the two steam generator accommodating grooves (13); the pressure vessel accommodating groove (12) is located at the central axis of the reactor compartment arrangement structure; the two steam generator accommodating grooves (13) are symmetrically arranged with the pressure vessel accommodating groove (12) as the center; the upper end surface of the base plate (1021) and the connecting plate (1022) define the installation chamber (11); the installation chamber (11) is respectively connected to the pressure vessel accommodating groove (12) and the two steam generator accommodating grooves (13).

3. The reactor compartment layout structure of the offshore nuclear power platform according to claim 2, characterized in that: The installation chamber (11) includes a pressurizer chamber (112) and a rhombus-shaped main chamber (111), the main chamber (111) is connected to the pressurizer chamber (112), the pressure vessel accommodating tank (12) and the two steam generator accommodating tanks (13) are both connected to the main chamber (111), and the two steam generator accommodating tanks (13) are formed on one diagonal line of the main chamber (111); The main equipment (50) includes a pressurizer (54), a pressure vessel (51), two steam generators (52) and two main pumps (53); the pressure vessel (51) and the steam generator (52) are both arranged in the main chamber (111), and at least partially extend into the pressure vessel accommodating tank (12) and the steam generator accommodating tank (13) respectively; the main pump (53) is arranged in the main chamber (111), and is symmetrically arranged on another diagonal line of the main chamber (111) with the pressure vessel accommodating tank (12) as the center; the pressurizer (54) is arranged in the pressurizer chamber (112), and the projection of the pressurizer (54) in the vertical direction is located on one of the symmetry lines of the reactor compartment.

4. The reactor compartment layout structure of an offshore nuclear power platform according to claim 2, characterized in that: The pressure suppression pool space (20) stores pressure suppression pool water, and the water surface of the pressure suppression pool water divides the pressure suppression pool space (20) into a water space (21) and an air space (22). In the initial state, the water surface of the pressure suppression pool is flush with the lower end surface of the installation chamber (11), so that the water space (21) is arranged around the pressure vessel accommodating tank (12) and the two steam generator accommodating tanks (13); the upper end surface of the air space (22) is flush with the upper end surface of the installation chamber (11), so that the air space (22) is arranged around the installation chamber (11).

5. The reactor compartment layout structure of an offshore nuclear power platform according to claim 4, characterized in that: The pressure vessel accommodating tank (12) is connected to the pressure suppression tank space (20) via a pipeline.

6. The reactor compartment layout structure of an offshore nuclear power platform according to claim 4, characterized in that: The corner space (30) includes a main space (31) and a personnel passage (32) connected to the main space (31), wherein the personnel passage (32) is located above the main space (31) and is connected to the main space (31).

7. The reactor compartment layout structure of an offshore nuclear power platform according to claim 5, characterized in that: The offshore nuclear power platform reactor compartment arrangement structure further includes a shielding cover (60), wherein the shielding cover (60) is arranged in the installation chamber (11), the main equipment (50) is passed through the shielding cover (60), and the horizontal cross-section of the shielding cover (60) is adapted to the horizontal cross-section of the installation chamber (11).

8. The reactor compartment arrangement structure of an offshore nuclear power platform according to claim 7, characterized in that: The upper end surface of the shielding cover (60) is higher than the upper end surface of the first partition member (101). The offshore nuclear power platform reactor compartment arrangement structure further comprises a grid platform (70). The grid platform (70) is arranged on the first partition member (101) and the shielding cover (60), and its lower end portion is connected to the upper end surface of the first partition member (101) and the upper end surface of the shielding cover (60), respectively.

9. The reactor compartment layout structure of an offshore nuclear power platform according to claim 2, characterized in that: The offshore nuclear power platform reactor compartment arrangement structure further comprises a plurality of off-core detector arrangement components (80), wherein a longitudinal channel for arranging off-core detectors is formed inside the off-core detector arrangement components (80), and the off-core detector arrangement components (80) are arranged at intervals in the circumferential direction of the pressure vessel accommodating groove (12).

10. The reactor compartment layout structure of an offshore nuclear power platform according to claim 1, characterized in that: The number of the corner spaces (30) is two, and the two corner spaces (30) are centrally symmetrically arranged along the central axis of the reactor compartment arrangement structure of the offshore nuclear power platform; And / or, the reactor compartment arrangement structure of the offshore nuclear power platform further comprises a safety injection system for replenishing water to a primary circuit, the safety injection system comprises a recirculation filter, and the recirculation filter is arranged in the water of the suppression pool space (20); And / or, the corner space (30) is arranged with a medium-pressure injection tank and a regenerative heat exchanger that have no height requirements; And / or, a ladder (90) is provided in the corner space (30) for workers to move to the upper space (40).

11. An offshore nuclear power platform, characterized in that: It comprises a cabin and the reactor compartment arrangement structure of an offshore nuclear power platform according to any one of claims 1 to 10, wherein the reactor compartment arrangement structure of the offshore nuclear power platform is arranged in the cabin.

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