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

Abstract

The present invention discloses an offshore nuclear power platform and an arrangement structure of an offshore nuclear power platform reactor compartment, comprising a first partition member, a second partition member, and a third partition member; the first partition member is horizontally arranged in the reactor compartment, dividing the reactor compartment into an upper space and a first space; the second partition member is connected to the first partition member and is located in the first space, dividing the first space into a second space and an installation space; the third partition member is located in the second space and is 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 arranged around the installation space, and the corner space is located outside the suppression pool space away from the installation space. The present invention can make the reactor compartment structure more compact, effectively reduce the weight of the reactor compartment structure, and reduce the difficulty of manufacturing.

Description

Technical Field

[0001] The present invention relates to the technical field of reactor compartment arrangement, and in particular to an offshore nuclear power platform and a reactor compartment arrangement 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 achieve. Onshore nuclear power plants generally achieve radiation shielding functions through concrete structures of sufficient thickness, while concrete cannot be used on offshore nuclear power platforms, and there are challenges in the design of radiation protection measures. Summary of the invention

[0004] The technical problem to be solved by the present invention 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 the present invention to solve its technical problem is:

[0006] Construct a reactor compartment layout structure for an offshore nuclear power platform, including:

[0007] a first partition member, the first partition member being horizontally arranged 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, the third partitioning member being 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 passage for connecting the installation space with the upper space is formed in the middle of the first partition member, 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, 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 groove and two steam generator accommodating grooves. Part of the wall surface of the substrate is recessed downward to form a partition member for the pressure vessel accommodating groove and the two steam generator accommodating grooves. The pressure vessel accommodating groove is located at the central axis of the reactor compartment layout structure, and the two steam generator accommodating grooves are symmetrically arranged with the pressure vessel accommodating groove as the center; the upper end surface of the substrate and the connecting plate define the installation chamber, and the installation chamber is respectively communicated with the pressure vessel accommodating groove and the two steam generator accommodating grooves.

[0013] In some embodiments, the installation chamber includes a pressurizer chamber and a rhombus-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 suppression pool space stores suppression pool water, and the water surface of the suppression pool water divides the suppression pool space into a water space and an air space. In an initial state, the water surface of the 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 housing 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 also includes a shielding cover, which is arranged in the installation chamber, and the main equipment is installed on 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, and the off-core detector layout components are spaced apart on the circumference of the pressure vessel accommodating groove.

[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 cabin arrangement structures, wherein the offshore nuclear power platform reactor cabin arrangement structure is arranged in the cabin.

[0026] The present invention has at least the following beneficial effects:

[0027] The present invention can make the reactor compartment structure more compact by constructing a reactor compartment arrangement structure in which a suppression pool is arranged around the installation space in the circumferential direction; and the suppression pool water is arranged around the reactor to form 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 invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0029] Figure 1 It is a structural schematic diagram of the reactor compartment arrangement structure of an offshore nuclear power platform in one embodiment of the present invention;

[0030] Figure 2 yes Figure 1 A schematic structural diagram of the wall of the reactor compartment arrangement structure of an offshore nuclear power platform is shown;

[0031] Figure 3 yes Figure 1 A top view of the reactor compartment arrangement structure of an offshore nuclear power platform is shown;

[0032] Figure 4 yes Figure 1 The enlarged view of the structure of the P site is shown;

[0033] Figure 5 yes Figure 1 The schematic diagram of the structure of the wall of the reactor compartment layout structure of an offshore nuclear power platform and the external detector layout components is shown. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention 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 invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside", "inside", "outside", etc. are based on the orientations or positional relationships shown in some of the drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing the technical solution, and do not indicate that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention. 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 there may also be one or more intermediate elements.

[0036] It should also be noted that, unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed", 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 directly connected or indirectly connected 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 only used to facilitate the description of the technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

[0039] The reactor compartment is in a cuboid shape as a whole, 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 arranged in the reactor compartment, and the reactor compartment is divided into an upper space 40 and a first space located below the upper space 40. The second partition member 102 is connected to the first partition member 101 and is located in the first space, and divides the first space into a second space and an installation space 10. The third partition member 103 is located in the second space, and is connected to the first partition member 101 and / or the second partition member 102, so as to divide the second partition space into a suppression pool 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 arranged in a cabin formed by a wall, and are fixed to the cabin. In some embodiments, the first partition member 101, the second partition member 102 and the third partition member 103 can be partition structures such as walls and plate-like members. In this embodiment, the reactor cabin is a cubic cabin.

[0042] The reactor compartment is provided with main equipment 50, shielding cover 60, grid platform 70, external core detector arrangement component 80 and other components. The main equipment 50, shielding cover 60, grid platform 70 and external 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 in a plate shape, and a clearance passage 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 cylinder, with its upper end connected to the inner periphery of the first partition member 101, and its lower end (i.e., the end of the connecting plate 1022 away from the first partition member 101) 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 groove 12 and two steam generator accommodating grooves 13, wherein the pressure vessel accommodating groove 12 and the two steam generator accommodating grooves 13 are formed by the downward depression of part of the wall surface of the base plate 1021. The upper end surface of the base plate 1021 and the connecting plate 1022 define the installation chamber 11, and the installation chamber 11 is respectively connected to the pressure vessel accommodating groove 12 and the two steam generator accommodating grooves 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, see Figure 3 The pressure vessel accommodating tank 12 is formed on the central axis of the reactor compartment, and the two steam generator accommodating tanks 13 are symmetrically arranged with the pressure vessel accommodating tank 12 as the center. The two main pumps 53 are arranged in the installation chamber 11 and are also symmetrically arranged with the pressure vessel accommodating tank 12 as the center. This ensures that the center of gravity of the reactor compartment is on the central axis to prevent the offshore nuclear power platform from swaying or even tipping over due to the beating of waves during operation.

[0049] For example Figure 2 As shown, 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 that the steam generators 52 are arranged at a large spacing and require a large arrangement space, and can reduce the size of the reactor compartment by about 30%, making the reactor compartment more compact, while reducing the force arm of the reactor compartment under the swaying condition of the waves, and improving the stability of the offshore nuclear power platform.

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

[0051] The suppression pool space 20 is disposed 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 with 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] like Figure 1 and Figure 2 As shown, 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. The water space 21 is arranged around the pressure vessel accommodating tank 12 and the two steam generator accommodating tanks 13, and the air space 22 is arranged around the circumference of the installation chamber 11. The water space 21 is highly overlapped with the core (or the pressure vessel accommodating tank 12), and the water in the suppression pool also has the function of shielding the active section of the core, reducing the shielding weight.

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

[0055] The reactor compartment arrangement structure also includes a safety injection system for replenishing water to the primary circuit after a breach occurs in the primary circuit to prevent the core from melting due to excessive temperature. The safety injection system includes a recirculation filter for filtering out impurities and debris in the water replenished to the primary circuit during the water intake process.

[0056] In some embodiments, the recirculation filter is disposed in the water space 21 of the suppression pool space 20, so that the injection system can directly draw water from the suppression pool. When a breach occurs in the primary circuit, high-temperature and high-pressure water leaks from the primary circuit, and turns into water vapor after leaking out, and flows back to the suppression pool after cooling and condensing. The water in the suppression pool is then injected into the primary circuit through the recirculation filter. The whole process utilizes the principle that water vapor rises and condenses into water and then flows back by gravity, realizing the recycling of reactor water in a passive manner, greatly reducing the space occupied and weight of the containment.

[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 (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 is connected to the water space 21 of the suppression pool space 20 through a pipe to realize the introduction of the suppression pool water into the reactor cavity to realize the 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 take away the heat dissipation of the reactor, relieving the pressure of the reactor compartment ventilation system.

[0058] For example Figure 1 and Figure 2 As shown, the number of the corner spaces 30 in this embodiment is two, and the two corner spaces 30 are centrally symmetrically arranged along the central axis of the reactor compartment to ensure the center of gravity of the reactor compartment and improve the stability of the offshore nuclear power platform. Each corner space 30 includes a main space 31 and a personnel passage 32, wherein the personnel passage 32 is located above the main space 31, and the upper and lower ends are respectively connected to the main space 31 and the upper space 40 (not shown in the figure), so as to allow the staff to move in various spaces in 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 when there is no swaying (or the upper end surface of the water space 21, or the lower end surface of the installation chamber 11). 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 operably connected to the upper space 40.

[0061] It should be noted that “operably connected to the upper space 40 ” here may mean being operably connected through a switchable gate, or being connected through a through opening that is always open, and 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 have the same height, and the space formed by the combination of the several is a cube. The air space 22, the installation chamber 11 and the two personnel passages 32 have the same height, and the space formed by the combination of the several is also a cube. And the horizontal cross-sections of the above two cube-shaped spaces are adapted.

[0063] Although the corner space 30 is arranged on the outside of the suppression pool space 20 away from the installation space 10, since the corner space 30 is not entirely surrounded by the circumference 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 arranged around the installation space 10 in the circumferential direction. In addition to shielding the core and reducing the weight of the structure, the water space 21 with the suppression pool water can effectively serve as a support carrier for the pressure vessel accommodating tank 12 and the two steam generator accommodating tanks 13, which is beneficial to the design of the support structure. And because the suppression pool space 20 shares a wall with the containment, the load of the main equipment 50 can be transferred to the containment structure.

[0065] In some embodiments, the reactor compartment arrangement structure of the offshore nuclear power platform further includes at least one ladder 90, which extends upward from the autonomous space 31 into the personnel passage 32, and the upper end of the ladder 90 is adapted to the upper end of the personnel passage 32, so as to ensure that the staff can enter the upper space 40 through the autonomous space 31 through the ladder 90, through the upper wall (not shown in the figure) of the suppression pool space 20. In this embodiment, there are two ladders 90, and the two ladders 90 are respectively arranged in the two corner spaces 30.

[0066] like Figure 1 As shown, the shielding cover 60 is arranged in the installation chamber 11, and is used to shield part of the main equipment structure located in the installation chamber 11. The main equipment 50 such as the reactor pressure vessel 51, the steam generator 52, the main pump 53 and the stabilizer 54 are all arranged in the shielding cover 60, and the lower end portion extends out of the shielding cover 60 and is respectively arranged on the lower end surface of the installation chamber 11 or in the pressure vessel accommodating groove 12 and the steam generator accommodating groove 13, and the upper end portion extends out of the shielding cover 60 and extends into the upper space 40. It is conducive to shielding rooting, simplifies the shielding cover 60 and its supporting structure, and further reduces the 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, so as to facilitate the fixing of 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 disposed 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 disposed on the upper end surface of the shielding cover 60. A plurality of crossbeams 72 are respectively connected to the lower end surface of the platform body 71 and the upper end surface of the first partition member 101, so that the platform body 71 is fixed to the first partition member 101. The crossbeams 72 of the grid platform 70 can be rooted in the upper end surface of the first partition member 101 as reinforcement ribs at the same time, which not only meets the structural strength of the suppression tank and the grid platform 70, but also reduces the number of components and reduces the difficulty of manufacturing and installation.

[0070] Read also Figure 4 In some embodiments, a plurality of through holes 721 are formed on the crossbeam 72 along the thickness direction for the pipeline to pass through, which is beneficial to the arrangement of the pipeline.

[0071] like Figure 5 As shown, in some embodiments, the reactor compartment arrangement structure of the offshore nuclear power platform further includes a plurality of off-core detector arrangement components 80, each of which is longitudinally arranged, and a longitudinal channel for arranging the detector is formed in the middle. The off-core detector arrangement components 80 are arranged at intervals on the circumference of the pressure vessel accommodating groove 12 in a direction parallel to the center axis of the reactor compartment.

[0072] Specifically, the off-core detector arrangement member 80 can be fixed to the base plate 1021 by welding or the like. 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 is matched with the lower end of the pressure vessel accommodating groove 12. The supporting structure of the off-core detector channel is simplified, which is conducive to the installation and removal of the detector 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 "A and B columns are arranged along the left and right side walls respectively, and three sets of cable trays are protected and arranged along the top of the compartment, and finally converged to the dedicated instrumentation and control system transfer box", which realizes 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 its 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 cover all items that need to be lifted in the reactor compartment in a three-dimensional manner.

[0075] The present invention 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 of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the scope of the claims of the present invention.

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 partition 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 so as to divide the first space into a second space and an installation space (10) for installing a main device (50); as well as 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) so as to divide 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) comprises 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 arrangement structure of an offshore nuclear power platform according to claim 2, characterized in that: The installation chamber (11) comprises a pressure regulator chamber (112) and a rhombus-shaped main chamber (111), the main chamber (111) being connected to the pressure regulator chamber (112), the pressure vessel accommodating groove (12) and the two steam generator accommodating grooves (13) being connected to the main chamber (111), and the two steam generator accommodating grooves (13) being formed on one of the diagonal lines of the main chamber (111); The main equipment (50) comprises 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 groove (12) and the steam generator accommodating groove (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 groove (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 arrangement 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 an 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 receiving tank (12) and the two steam generator receiving 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 arrangement structure of an offshore nuclear power platform according to claim 4, characterized in that: The pressure container accommodating tank (12) is connected to the pressure suppression tank space (20) via a pipeline.

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

7. The reactor compartment arrangement structure of an offshore nuclear power platform according to claim 5, characterized in that: The offshore nuclear power platform reactor compartment arrangement structure further comprises 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 layout structure also includes 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 is respectively connected to the upper end surface of the first partition member (101) and the upper end surface of the shielding cover (60).

9. The reactor compartment arrangement 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 the 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.

Images