Nuclear power platform arrangement structure

Abstract

The utility model provides a nuclear power platform arrangement structure, and relates to the technical field of offshore nuclear power platforms, the nuclear power platform arrangement structure comprises two reactor cabins, and a first-layer auxiliary cabin, a second-layer auxiliary cabin and a third-layer auxiliary cabin symmetrically arranged on two sides of the reactor cabins; two first-layer equipment chambers are arranged in the first-layer auxiliary cabin; and the safety device A and the safety device B in the same group are respectively arranged in two staggered and opposite first-layer equipment rooms of different first-layer auxiliary cabins. The auxiliary cabins are arranged on the two sides of the reactor cabin and are arranged to be of a three-layer structure, the compact arrangement requirement of the offshore nuclear power platform is met, entity isolation and staggered arrangement of the double safety systems are achieved, the resistance to external disasters is improved, the influence of common-mode accidents on the safety systems of the reactor cabin can be avoided, and the safety performance of the nuclear power platform is improved. And the safety requirement of the nuclear power platform is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore nuclear power platform, in particular to a nuclear power platform arrangement structure. BACKGROUND

[0002] The existing onshore double-reactor nuclear power plant auxiliary plant and reactor plant are arranged separately, and the refueling plant is shared, for example, a compact reactor double pile shared spent fuel pool device disclosed in Chinese invention patent CN110246599A, two pressurized water reactor mirrors are arranged, a shared spent fuel pool and a shared fuel plant are arranged between the two reactor plants, and the two reactor plants are communicated through a fuel transportation channel and a corresponding pipeline through part, respectively, and the two reactors share a fuel plant and corresponding supporting systems, equipment and structures.

[0003] For offshore nuclear power platforms, the internal space is more cramped than onshore nuclear power plants, and there is no space for the arrangement of the refueling plant, which greatly increases the difficulty of the layout of the auxiliary plant and the reactor plant. The layout method of the existing onshore double-reactor nuclear power plant cannot meet the compact layout requirements of the offshore nuclear power platform. In addition, the two reactors in the existing design share a fuel plant and corresponding safety systems, which, if directly used in offshore nuclear power platforms, can cause serious consequences to the reactor cabin safety system due to common mode accidents, and cannot meet the safety requirements of offshore nuclear power platforms. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the present application provides a nuclear power platform arrangement structure, which solves the problem that the arrangement structure of the existing onshore double-reactor nuclear power plant is not suitable for offshore nuclear power platforms, and the layout compactness and safety do not meet the related technical requirements. The nuclear power platform arrangement structure provided by the present application arranges the auxiliary cabin on both sides of the reactor cabin through a symmetrical layout method, and is arranged as a three-layer structure, which meets the compact layout requirements of offshore nuclear power platforms. The safety systems of the double reactors are arranged in the staggered opposite one-layer equipment room of the different one-layer auxiliary cabin, which realizes the physical isolation and staggered arrangement of the double safety systems, improves the resistance to external disasters, avoids the influence of common mode accidents on the safety system of the reactor cabin, and meets the safety requirements of offshore nuclear power platforms.

[0005] The present application provides a nuclear power platform arrangement structure, which includes two longitudinally arranged reactor cabins, and one-layer auxiliary cabin, two-layer auxiliary cabin and three-layer auxiliary cabin symmetrically arranged on both sides of the two reactor cabins and stacked from bottom to top, and each reactor cabin is provided with a reactor.

[0006] Each of the auxiliary compartments is divided into two longitudinally arranged device rooms for installing auxiliary devices, and the two device rooms correspond to the two reactor chambers respectively.

[0007] The auxiliary devices include two groups of safety systems connected to the corresponding reactor chambers respectively, and each group of safety systems includes safety device A and safety device B.

[0008] The safety device A and the safety device B in the same group are arranged in two staggered opposite device rooms in different auxiliary compartments, and each device room is provided with one safety device A or one safety device B.

[0009] In some embodiments, two safety device A or two safety device B in different groups are arranged in two opposite device rooms in different auxiliary compartments.

[0010] In some embodiments, each of the auxiliary compartments, the second auxiliary compartments and the third auxiliary compartments is divided into a longitudinal personnel passage, a second personnel passage and a third personnel passage away from the outside of the reactor chamber, and the personnel passages on the same side are connected by stairs and escape passages.

[0011] The two device rooms in the same auxiliary compartment are connected to the adjacent personnel passage by a personnel gate.

[0012] In some embodiments, the stairs and the escape passages are respectively located at opposite ends in the longitudinal direction of the personnel passage.

[0013] The escape passage is connected to the personnel passage by an escape gate, and a vertical ladder or a slide rod is arranged in the escape passage and vertically connected to the personnel passage, the second personnel passage and the third personnel passage on the same side and the external space.

[0014] In some embodiments, each of the second auxiliary compartments is divided into a longitudinal device room for installing supply pipelines towards the inside of the reactor chamber.

[0015] The supply pipelines are provided with two groups connected to the corresponding reactor chambers respectively, and each group of supply pipelines includes main steam pipelines and main water supply pipelines.

[0016] The second layer equipment room in the same second layer auxiliary cabin is communicated with the adjacent second layer personnel passage through a second layer personnel gate.

[0017] In some embodiments, each second layer equipment room is communicated with the outside space through at least one pressure relief well penetrating the same side third layer auxiliary cabin upwardly, and the pressure relief well corresponds to the arrangement region of the supply pipeline.

[0018] In some embodiments, each third layer auxiliary cabin is divided into two longitudinally arranged third layer equipment rooms for installing third layer auxiliary equipment towards the inner side of the reactor cabin, and the two third layer equipment rooms correspond to the two reactor cabins respectively.

[0019] Two third layer equipment rooms in at least one third layer auxiliary cabin and the third layer personnel passage define a hot changing room, which corresponds to between the two reactor cabins and is communicated to the two reactor cabins through two changing room gates respectively.

[0020] The third layer equipment room or / and the hot changing room in the same third layer auxiliary cabin is communicated with the adjacent third layer personnel passage through a third layer personnel gate.

[0021] In some embodiments, the third layer auxiliary equipment includes two groups of ventilation devices and water supply tanks connected to the corresponding reactor respectively, and the ventilation devices and water supply tanks in the same group are arranged in two opposite third layer equipment rooms of different third layer auxiliary cabins and are on the two sides of the corresponding reactor respectively.

[0022] In some embodiments, the corresponding first layer equipment room, second layer equipment room and third layer equipment room on the same side are vertically communicated through a hoisting well upwardly and downwardly.

[0023] The nuclear power platform arrangement structure provided in the application provides sufficient arrangement space for the respective arrangement of the double reactor corresponding equipment and supporting system by the symmetrical layout of the auxiliary cabin, the higher integral degree and space utilization of the reactor cabin and the auxiliary cabin, and meets the compact arrangement requirement of the double reactor offshore nuclear power platform.

[0024] In addition, the nuclear power platform arrangement structure provided by the application arranges the safety systems of the two reactors in different device rooms of the staggered auxiliary cabins, which achieves the spatial isolation of the safety devices A and B of the two safety systems in the device rooms, improves the resistance to external disasters, avoids the influence of common mode accidents on the safety systems of the reactor cabins, and meets the safety requirements of the offshore nuclear power platform. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0026] Figure 1 is a schematic view of the cross section of one embodiment of the application in the vertical direction;

[0027] Figure 2 is a schematic view of the top structure of one auxiliary cabin in one embodiment of the application;

[0028] Figure 3 is a schematic view of the top structure of the second auxiliary cabin in one embodiment of the application;

[0029] Figure 4 is a schematic view of the top structure of the third auxiliary cabin in one embodiment of the application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. According to the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0031] Please refer to Figures 1 to 2 In some embodiments of the application, a nuclear power platform arrangement structure is provided, which includes two longitudinally arranged reactor cabins 1, and an auxiliary cabin 2, a second auxiliary cabin 3 and a third auxiliary cabin 4 arranged symmetrically on the left and right sides of the two reactor cabins 1 and stacked from bottom to top. Each reactor cabin 1 is provided with a reactor 11. The reactor cabin 1 and each auxiliary cabin are physically isolated by a cabin wall to prevent radioactive substances in the reactor cabin 1 from leaking.

[0032] Each of the one-layer auxiliary cabins 2 is divided into two longitudinally arranged one-layer equipment rooms 21 for installing one-layer auxiliary equipment 5 towards the inner side of the reactor cabin 1, and the two one-layer equipment rooms 21 correspond to the two reactor cabins 1 respectively.

[0033] The one-layer auxiliary equipment 5 includes two groups of safety systems connected with the corresponding reactor 11 respectively, and each group of the safety system includes a safety device A 51 and a safety device B 52.

[0034] The safety device A 51 and the safety device B 52 in the same group are arranged in two staggered opposite one-layer equipment rooms 21 of different one-layer auxiliary cabins 2 respectively, and each one-layer equipment room 21 is provided with one safety device A 51 or one safety device B 52, so as to avoid the case that two safety devices are arranged in the same one-layer equipment room 21 while other one-layer equipment rooms 21 are empty, thereby ensuring that four safety devices of two groups of safety systems can be arranged in four one-layer equipment rooms 21 one by one, and ensuring that the safety device A 51 and the safety device B 52 of the same group of safety systems can be staggered and opposite, thereby forming a staggered arrangement structure of two groups of safety systems.

[0035] The nuclear power platform arrangement structure provided by the present application arranges the auxiliary cabin on both sides of the reactor cabin 1 by the symmetrical layout mode of the auxiliary cabin, and the auxiliary cabin adopts a three-layer structure design from bottom to top. The reactor cabin 1 and the auxiliary cabin have higher overall integration and space utilization, and provide sufficient arrangement space for the arrangement of corresponding equipment and supporting systems of the double reactor 11, thereby meeting the compact arrangement requirement of the double reactor offshore nuclear power platform.

[0036] In addition, the nuclear power platform arrangement structure provided by the present application arranges the safety systems of the double reactor 11 in the staggered opposite one-layer equipment rooms 21 of different one-layer auxiliary cabins 2. On the one hand, the physical isolation of the safety device A 51 and the safety device B 52 of the double safety system in space is realized by the independent one-layer equipment room 21, and on the other hand, the resistance to external disasters is improved by the staggered arrangement mode of the safety device A 51 and the safety device B 52 of the double safety system, thereby avoiding the influence of common mode accidents on the safety system of the reactor cabin 1, and meeting the safety requirement of the offshore nuclear power platform.

[0037] As preferred, the length in the longitudinal direction, the width in the lateral direction, and the height in the vertical direction of the two reactor compartments 1 are all the same, so as to ensure that the reactors 11 in the two reactor compartments 1 have the same accommodation space. The total height of the one auxiliary compartment 2, the two auxiliary compartments 3 and the three auxiliary compartments 4 after being stacked one above another is preferably the same as the height of the reactor compartment 1 in the vertical direction. The length in the longitudinal direction of the one auxiliary compartment 2, the two auxiliary compartments 3 and the three auxiliary compartments 4 is preferably the same as the total length of the two reactor compartments 1 in the longitudinal direction, and the width in the lateral direction of the one auxiliary compartment 2, the two auxiliary compartments 3 and the three auxiliary compartments 4 is preferably also the same, so that the symmetrically arranged and stacked auxiliary compartments and the reactor compartment 1 as a whole constitute a regular cubic structure, and the regularity and compactness of the arrangement of the auxiliary compartments and the reactor compartment 1 are improved, which facilitates the arrangement on the offshore platform.

[0038] Please refer to Figure 2 For the convenience of understanding, the reactors 11 in the two longitudinally arranged reactor compartments 1 will be referred to as the first reactor 111 and the second reactor 112 respectively, and the safety devices A51 of the corresponding safety systems connected to the first reactor 111 will be referred to as the first safety device A511 and the safety device B52 will be referred to as the first safety device B521, and the safety devices A51 of the corresponding safety systems connected to the second reactor 112 will be referred to as the second safety device A512 and the safety device B52 will be referred to as the second safety device B522.

[0039] In actual arrangement, the safety devices of the two groups of safety systems in the four one-level equipment rooms 21 of the symmetrically arranged one auxiliary compartment 2 can form a layout in which the first safety device A511 and the second safety device B522 are laterally corresponding, the second safety device A512 and the first safety device B521 are laterally corresponding, and the first safety device A511 and the second safety device A512 are in one one-level auxiliary compartment 2, and the second safety device B522 and the first safety device B521 are in another one-level auxiliary compartment 2. In this way, whether the first safety device A511 and the second safety device B522, or the second safety device A512 and the first safety device B521 are arranged on the two sides of the first reactor 111 or the second reactor 112, the safety devices A51 and the safety devices B52 of the two groups of safety systems can form a staggered arrangement structure.

[0040] In the embodiment, two safety devices A51 or two safety devices B52 of different groups are arranged in two opposite device rooms 21 of different auxiliary cabins 2. In actual arrangement, the safety devices of the two groups of safety systems are arranged in a symmetrical manner in the four device rooms 21 of the auxiliary cabin 2, and the first safety device A511 and the second safety device A512 are transversely corresponding to each other, the second safety device B522 and the first safety device B521 are transversely corresponding to each other, and the first safety device A511 and the second safety device B522 are arranged in one auxiliary cabin 2, and the second safety device A512 and the first safety device B521 are arranged in another auxiliary cabin 2. In this way, no matter whether the first safety device A511 and the second safety device A512, or the second safety device B522 and the first safety device B521 are arranged on the two sides of the first reactor 111 or the second reactor 112, the safety devices A51 and the safety devices B52 of the two groups of safety systems can be arranged in a staggered manner, and the same type of safety devices (such as the safety devices A51 or the safety devices B52) are arranged in the same auxiliary cabin 2, which realizes the cross arrangement and isolation of the safety devices A51 and the safety devices B52 of the two groups of safety systems, plays a mutual locking role, further improves the resistance to external disasters, and can maximize the influence of common mode accidents on the safety system of the reactor cabin 1, and further improves the safety of the offshore nuclear power platform.

[0041] Referring to Figure 2 In some embodiments, the auxiliary equipment 5 of the first layer further comprises two groups of heat exchangers 53, pumps 54 and other equipment connected with the two reactors 11 respectively. In actual arrangement, the heat exchangers 53 and the pumps 54 of different groups are preferably arranged in two opposite or staggered device rooms 21 of different auxiliary cabins 2, so that the heat exchangers 53 and the pumps 54 of different groups are arranged in two auxiliary cabins 2 respectively, and the adverse effects of common mode failure of the auxiliary equipment 5 of the first layer on the reactors 11 are avoided.

[0042] Referring to Figures 2 to 4 In some embodiments, each of the auxiliary cabins 2, 3 and 4 of the first, second and third layers is divided into a longitudinal first personnel passage 22, a second personnel passage 32 and a third personnel passage 42 away from the outer side of the reactor cabin 1, and the first personnel passage 22, the second personnel passage 32 and the third personnel passage 42 on the same side are connected by stairs 6 and escape passages 7.

[0043] Referring to Figure 2 The two device rooms 21 in the same auxiliary cabin 2 are connected with the adjacent personnel passages 22 by personnel doors 23.

[0044] As preferred, a longitudinal partition wall 24 is arranged on the outer side of each auxiliary cabin 2 away from the reactor cabin 1, a transverse partition wall 25 is arranged on the inner side of the middle part of the longitudinal partition wall 24, the two ends of the longitudinal partition wall 24 are respectively connected to the inner walls of the two ends of the auxiliary cabin 2 in the longitudinal direction, and the two ends of the transverse partition wall 25 are respectively connected to the inner walls of the longitudinal partition wall 24 and the auxiliary cabin 2 in the transverse direction, so as to define the personnel passage 22 by the longitudinal partition wall 24 and the inner walls of the auxiliary cabin 2, and define the equipment room 21 by the longitudinal partition wall 24, the transverse partition wall 25 and the inner walls of the auxiliary cabin 2. The personnel gate 23 is arranged on the corresponding position of the longitudinal partition wall 24 of each equipment room 21, so as to communicate the personnel passage 22 with the corresponding two equipment rooms 21 through the two personnel gates 23, so that the two equipment rooms 21 can share one personnel passage. Moreover, the personnel passage 22 and the equipment room 21 are physically separated by the longitudinal partition wall 24, which not only meets the arrangement requirement of the physical separation of the safety system, but also avoids the problem that the safety system fails to endanger the personnel passage in abnormal conditions, and is safer.

[0045] The nuclear power platform arrangement provided in the application is arranged with the personnel passage on the side of each auxiliary cabin away from the reactor cabin 1, realizes the one-side communication of the auxiliary cabins of the two reactors 11, facilitates the personnel passing, and the personnel passages on the same side share the stair 6 and the escape passage 7, which can be used for the personnel passing and working in the auxiliary cabins under normal conditions, and can be used for the personnel timely evacuation under emergency conditions, and is safer. Moreover, the symmetrical arrangement of the personnel passages is more compact, and the position of the passage is more reasonable, which not only facilitates the personnel passing and evacuation, but also reduces the number of the personnel passages and the escape passages 7 arranged in the auxiliary cabin, and improves the economy of the platform.

[0046] Please refer to Figures 2 to 4 In some embodiments, the stair 6 and the escape passage 7 are respectively arranged at the opposite ends of the personnel passage in the longitudinal direction.

[0047] The escape passage 7 communicates with the personnel passage through the escape gate 71, and a vertical ladder (not marked) or a slide rod (not shown in the figure) is arranged in the escape passage 7 and vertically connected to the personnel passage 22, the personnel passage 32 and the personnel passage 42 on the same side and the external space.

[0048] The offshore nuclear power platform auxiliary cabin arrangement provided in the application sets the stair 6 and the escape passage 7 at two ends of the personnel passage respectively, fully utilizes the limited space in the personnel passage, improves the compactness of the platform layout, and reduces the number of emergency escape passages 7 arranged in the auxiliary cabin, which is more economical. The vertical ladder or slide rod vertically connecting the personnel passage of each layer and the external space is arranged in the escape passage 7. Compared with the walking escape mode through the stair 6, the vertical ladder or slide rod can directly move from the layer auxiliary cabin to the safe layer or the external space, which can significantly improve the speed and efficiency of personnel escape in an emergency. In addition, the escape passage 7 is connected with the personnel passage through the escape gate 71, which is in a closed state under normal conditions, which can prevent personnel from falling into the escape passage 7 and improve safety.

[0049] Please refer to Figure 1 and Figure 3 In some embodiments, each of the two-layer auxiliary cabin 3 is divided into a longitudinal two-layer equipment room 31 for installing the supply pipeline 8 towards the inner side of the reactor cabin 1.

[0050] The supply pipeline 8 is provided with two groups respectively connected with the corresponding reactor 11. Each group of the supply pipeline 8 includes a main steam pipeline 81 and a main water pipeline 82. The main steam pipeline 81 and the main water pipeline 82 of the same group are arranged in different two-layer equipment rooms 31 and symmetrically located on both sides of the corresponding reactor 11.

[0051] It can be understood that in actual arrangement, the same type of supply pipeline 8 belonging to different groups can be arranged on the same side, that is, the main steam pipelines 81 of different groups are arranged in the two-layer equipment room 31 of one of the two-layer auxiliary cabins 3, and the main water pipelines 82 of different groups are arranged in the two-layer equipment room 31 of the other two-layer auxiliary cabin 3. In this way, the same type of supply pipeline of two reactors is arranged in the same two-layer auxiliary cabin 3, which is convenient for centralized and unified management and also facilitates personnel to operate the same type of supply pipeline in the same auxiliary cabin.

[0052] In other embodiments, different types of supply pipelines 8 of different groups can also be arranged on the same side, that is, the main steam pipelines 81 and the main water pipelines 82 belonging to two groups are arranged in the two-layer equipment room 31 of the same two-layer auxiliary cabin 3. In this way, the two groups of supply pipelines of two reactors can form a staggered arrangement structure, and the same type of supply pipeline 8 (such as the main steam pipeline 81 or the main water pipeline 82) is avoided in the same two-layer auxiliary cabin 3, which realizes the cross arrangement isolation of the main steam pipelines 81 and the main water pipelines 82 of the two groups of supply pipelines, plays a mutual locking role, further improves the resistance to external disasters, and can maximize the influence of common mode accidents on the reactor 11, further improving the safety of the offshore nuclear power platform.

[0053] Referring to Figure 3 , the two-layer equipment room 31 in the same two-layer auxiliary cabin 3 is communicated with the adjacent two-layer personnel passage 32 through a two-layer personnel gate 33.

[0054] As a preferred, a longitudinal two-layer longitudinal partition wall 34 is arranged in the two-layer auxiliary cabin 3 away from the reactor cabin 1, and two ends of the two-layer longitudinal partition wall 34 are connected to the inner walls of the two ends of the two-layer auxiliary cabin 3 in the longitudinal direction, so as to define the two-layer personnel passage 32 and the two-layer equipment room 31 by the two-layer longitudinal partition wall 34 and the inner walls of the two-layer auxiliary cabin 3. At least one two-layer personnel gate 33 is arranged at the corresponding position of the two-layer longitudinal partition wall 34 of each two-layer equipment room 31, so as to communicate the two-layer personnel passage 32 and the two-layer equipment room 31 through the two-layer personnel gate 33.

[0055] In the embodiment, two two-layer personnel gates 33 are arranged on the two-layer longitudinal partition wall 34 in each two-layer auxiliary cabin 3, and the two two-layer personnel gates 33 are arranged outside the arrangement area of the two groups of supply pipes 8 and close to the stairs 6 or the escape passage 7, so as to facilitate the personnel in different positions of the two-layer equipment room 31 to quickly enter the two-layer personnel passage 32 through the closest two-layer personnel gate 33, thereby improving the efficiency of personnel passing and emergency escape.

[0056] The two-layer equipment room 31 of the entire two-layer auxiliary cabin 3 is longitudinally penetrated, and no partition wall or compartment is arranged inside, so that the space is relatively more open, and the high-pressure and high-temperature supply pipes 8 can be arranged in the two-layer auxiliary cabin 3 in a safer manner. Moreover, no other reactor auxiliary equipment or support system is arranged in the two-layer auxiliary cabin 3 except for the high-energy supply pipes 8, and the two-layer equipment room 31 is physically isolated from the two-layer personnel passage 32 through the two-layer longitudinal partition wall 34, so that the adverse effects of the rupture of the high-energy supply pipes 8 on personnel and equipment can be avoided to the greatest extent.

[0057] Referring to Figure 1 , Figure 3 and Figure 4 In some embodiments, each two-layer equipment room 31 is communicated with the outside space through at least one pressure relief well 35 penetrating upward through the same side of the three-layer auxiliary cabin 4, and the pressure relief well 35 is arranged at the arrangement area of the supply pipe 8.

[0058] The application communicates the second floor equipment room 31 with the outside space through the pressure relief well 35, and when the high-energy supply pipeline 8 breaks and leaks, etc., the pressure in the second floor equipment room 31 can be quickly discharged to the outside through the pressure relief well 35 to achieve pressure relief. In addition, the pressure relief well 35 penetrates the third floor auxiliary cabin 4 upwards instead of downwards through the first floor auxiliary cabin 2, which can avoid the second floor equipment room 21 and avoid the adverse effects of the high-energy supply pipeline 8 breakage and leakage on the safety system of the reactor 11.

[0059] As preferred, each second floor equipment room 31 is communicated with the outside through two pressure relief wells 35 which penetrate the same side of the third floor auxiliary cabin 4 upwards, and the two pressure relief wells 35 are respectively arranged in the arrangement area of the two groups of supply pipelines 8, so that when the corresponding supply pipeline 8 of any reactor 11 breaks and leaks, the corresponding pressure relief well 35 in the arrangement area can quickly discharge the pressure to the outside, and the pressure relief efficiency is higher.

[0060] As preferred, the pressure relief well 35 is preferably a cylindrical structure, and the main part is vertically fixedly arranged at the corresponding position of the third floor auxiliary cabin 4, and the lower port of the pressure relief well 35 penetrates the top wall of the bottom wall 3 of the third floor auxiliary cabin 4 downwards, and the upper port of the pressure relief well 35 penetrates the top wall of the third floor auxiliary cabin 4 upwards, so as to communicate the second floor equipment room 31 of the second floor auxiliary cabin 3 with the outside space through the pressure relief well 35. In addition, it should be noted that the inner cavity of the pressure relief well 35 needs to be strictly isolated from the third floor auxiliary cabin 4 to prevent high-energy steam or feed water from leaking into the third floor auxiliary cabin 4 during the pressure relief process and endangering personnel or equipment.

[0061] Please refer to Figure 1 and Figure 4 In some embodiments, each of the third floor auxiliary cabin 4 is divided into two third floor equipment rooms 41 for installing the third floor auxiliary equipment 9 which are arranged longitudinally towards the inner side of the reactor cabin 1, and the two third floor equipment rooms 41 are respectively corresponding to the two reactor cabins 1.

[0062] In some embodiments, the two third floor equipment rooms 41 and the third floor personnel passage 42 in at least one of the third floor auxiliary cabin 4 define a hot changing room 43 therebetween, and the hot changing room 43 is corresponding to between the two reactor cabins 1 and is communicated to the two reactor cabins 1 through two changing room gates 44 respectively.

[0063] The third floor equipment room 41 or / and the hot changing room 43 in the same third floor auxiliary cabin 4 is communicated with the adjacent third floor personnel passage 42 through a third floor personnel gate 45.

[0064] Please refer to Figure 4, as preferred, one of said three-layer auxiliary compartments 4 is provided with a longitudinally extending three-layer longitudinal partition wall 46 at the outer side away from the reactor compartments 1, two parallel and transversely extending three-layer transverse partition walls 47 are provided side by side at the inner side of the middle part of the three-layer longitudinal partition wall 46, the two ends of the three-layer longitudinal partition wall 46 are connected to the inner walls of the two ends of the three-layer auxiliary compartment 4 in the longitudinal direction, and the two ends of the three-layer transverse partition walls 47 are connected to the inner walls of the three-layer longitudinal partition wall 46 and the three-layer auxiliary compartment 4 in the transverse direction, so as to define said three-layer personnel passageway 42 by the three-layer longitudinal partition wall 46 and the inner walls of the three-layer auxiliary compartment 4, and to define said three-layer equipment rooms 41 and hot changing rooms 43 by the three-layer longitudinal partition wall 46, the two parallel three-layer transverse partition walls 47 and the inner walls of the three-layer auxiliary compartment 4, and the hot changing rooms 43 are located between the two three-layer equipment rooms 41 and correspond to the middle parts of the two reactor compartments 1.

[0065] The two said changing room gates 44 are arranged at the corresponding positions of the compartment walls between the hot changing rooms 43 and the two reactor compartments 1, so as to respectively connect the hot changing rooms 43 to the two reactor compartments 1 through the two changing room gates 44. The three-layer personnel gates 45 are arranged at the corresponding positions of the three-layer longitudinal partition walls 46 of each three-layer equipment room 41 and hot changing room 43, so as to respectively connect the three-layer personnel passageway 42 to the corresponding two three-layer equipment rooms 41 and the middle hot changing room 43 through the three three-layer personnel gates 45, so that the two three-layer equipment rooms 41 and the middle hot changing room 43 can share one personnel passageway. The three-layer personnel passageway 42 and the three-layer equipment rooms 41 are physically separated by the three-layer longitudinal partition wall 46, and the hot changing rooms 43 and the three-layer equipment rooms 41 are physically separated by the three-layer longitudinal partition wall 46 and the three-layer transverse partition walls 47, which not only meets the arrangement requirement of physically separating the three-layer auxiliary equipment 9 and the hot changing rooms 43, but also avoids the problem of endangering the personnel passageway and the hot changing rooms 43 due to the failure of the three-layer auxiliary equipment 9 under abnormal conditions, thus being safer.

[0066] The other three-layer auxiliary cabin 4 is provided with a longitudinally extending three-layer longitudinal partition wall 46 on the outer side away from the reactor cabin 1, a transversely extending three-layer transverse partition wall 47 is arranged on the inner side of the middle part of the three-layer longitudinal partition wall 46, and the two ends of the three-layer longitudinal partition wall 46 are respectively connected to the inner walls of the two ends of the three-layer auxiliary cabin 4 in the longitudinal direction, and the two ends of the three-layer transverse partition wall 47 are respectively connected to the inner walls of the three-layer longitudinal partition wall 46 and the three-layer auxiliary cabin 4 in the transverse direction, so as to define the three-layer personnel passage 42 by the three-layer longitudinal partition wall 46 and the inner walls of the three-layer auxiliary cabin 4, and define the three-layer equipment room 41 by the three-layer longitudinal partition wall 46, the three-layer transverse partition wall 47 and the inner walls of the three-layer auxiliary cabin 4. That is, the hot changing room is not arranged in the other three-layer auxiliary cabin 4, and the three-layer personnel gate 45 is arranged at the corresponding position of the three-layer longitudinal partition wall 46 of each three-layer equipment room 41, so that the two three-layer personnel gates 45 are respectively connected to the corresponding two three-layer equipment rooms 41 through the three-layer personnel passage 42, so that the two three-layer equipment rooms 41 can share one personnel passage. The three-layer personnel passage 42 and the three-layer equipment room 41 are physically separated by the three-layer longitudinal partition wall 46, which not only meets the arrangement requirement of the three-layer auxiliary equipment 9, but also avoids the problem that the three-layer auxiliary equipment 9 fails to endanger the personnel passage in abnormal conditions, and has higher safety.

[0067] The hot changing room 43 is arranged in at least one three-layer auxiliary cabin 4, and the platform personnel can directly enter the hot changing room 43 through the corresponding three-layer personnel gate 45 on the three-layer longitudinal partition wall 46 of the hot changing room 43 and the three-layer personnel passage 42 during operation, and then enter the corresponding reactor cabin 1 through any changing room gate 44 of the hot changing room 43 after changing clothes, so that the two reactor cabins 11 of the offshore nuclear power platform can share the hot changing room 43 of the three-layer auxiliary cabin 4, thereby reducing the arrangement number of the hot changing room 43 in the auxiliary cabin and improving the compactness of the auxiliary cabin arrangement structure. In addition, the reactor cabin 1 and the auxiliary cabin can be physically separated through the cabin wall therebetween, and the platform personnel must enter the corresponding reactor cabin 1 through the changing room gate 44 provided with the hot changing room 43, so as to ensure that the reactor cabin 1 can be safely separated from the equipment room, personnel passage and the like in the auxiliary cabin, and avoid the leakage of radioactive substances in the reactor cabin 1.

[0068] Please refer to Figure 4 In some embodiments, the three-layer auxiliary equipment 9 includes two groups of ventilation devices 91 and water supply tanks 92 respectively connected to the corresponding reactor 11, and the ventilation devices 91 and the water supply tanks 92 in the same group are arranged in two three-layer equipment rooms 41 of the three-layer auxiliary cabin 4 opposite to each other and on the two sides of the corresponding reactor 11.

[0069] It can be understood that, in actual arrangement, the same type of three-layer auxiliary equipment 9 belonging to different groups can be arranged on the same side, that is, the ventilation devices 91 of different groups are arranged in two three-layer equipment rooms 41 of one of the three-layer auxiliary cabins 4, and the water supply tanks 92 of different groups are arranged in two three-layer equipment rooms 41 of the other three-layer auxiliary cabin 4. In this way, the same type of three-layer auxiliary equipment 9 of two reactors is arranged in two three-layer equipment rooms 41 of the same three-layer auxiliary cabin 4, which is convenient for centralized and unified management, and also facilitates personnel to work on the same type of auxiliary equipment in the same auxiliary cabin.

[0070] Please refer to Figure 4 As preferred, in the embodiment, the different types of three-layer auxiliary equipment 9 belonging to different groups are arranged on the same side, that is, the ventilation devices 91 and the water supply tanks 92 belonging to two groups are arranged in two three-layer equipment rooms 41 of the same three-layer auxiliary cabin 4. In this way, the two groups of ventilation devices 91 and water supply tanks 92 of two reactors can form a staggered arrangement structure, and the same type of three-layer auxiliary equipment 9 (such as ventilation devices 91 or water supply tanks 92) is avoided in the same three-layer auxiliary cabin 4, realizing the cross arrangement isolation of the ventilation devices 91 and the water supply tanks 92 of the two groups of three-layer auxiliary equipment 9, playing a mutual locking role, further improving the resistance to external disasters, and maximizing the influence of common mode accidents on the reactor 11, further improving the safety of the offshore nuclear power platform.

[0071] The present application arranges the two groups of ventilation devices 91 and water supply tanks 92 belonging to different reactors 11 in different three-layer auxiliary cabins 4 in staggered and opposite three-layer equipment rooms 41, so that the two groups of ventilation devices 91 and water supply tanks 92 form a cross arrangement structure, realizing cross arrangement isolation, further improving the resistance to external disasters, and maximizing the influence of common mode accidents on the reactor 11, further improving the safety of the offshore nuclear power platform.

[0072] Please refer to Figures 2 to 4 In some embodiments, the corresponding one-layer equipment room 21, two-layer equipment room 31 and three-layer equipment room 41 in each auxiliary cabin on the same side are vertically connected through the hoisting well 10.

[0073] The hoisting well 10 is arranged in the upper and lower corresponding areas of each one-layer equipment room 21, two-layer equipment room 31 and three-layer equipment room 41, so as to ensure that each equipment room of each layer of auxiliary cabin can be connected with the corresponding equipment room of the auxiliary cabin on the same side through the corresponding hoisting well 10, so as to facilitate the hoisting, transfer of equipment and materials in the equipment room of each layer of auxiliary cabin.

[0074] The lifting well 10 is preferably arranged side by side with the pressure relief well 35 and close to one end of the bulkhead between the reactor cabin 1 and the auxiliary cabin, so as to avoid the lifting well 10 and the pressure relief well 35 from occupying too much space for equipment arrangement in the equipment room, and meanwhile, the arrangement close to the end of the bulkhead can also avoid the personnel from falling by mistake and is safer.

[0075] Please refer to Figures 1 to 4 The nuclear power platform arrangement structure provided by the application is applied to an offshore nuclear power platform, and the offshore nuclear power platform comprises a ship cabin 100, and the ship cabin 100 is provided with any one of the nuclear power platform arrangement structures. Preferably, the two reactor cabins 1 are arranged longitudinally in front of and behind the central axis in the length direction of the ship cabin 100, and the first-layer auxiliary cabin 2, the second-layer auxiliary cabin 3 and the third-layer auxiliary cabin 4 are symmetrically arranged on the left and right sides of the ship cabin 100 in the length direction and are sequentially stacked from bottom to top.

[0076] It can be understood that the nuclear power platform arrangement structure can be constructed by fully utilizing the decks of the ship cabin 100. For example, the two reactor cabins 1 can be arranged to directly penetrate the first to third decks in the middle of the ship cabin 100 and are physically isolated from the spaces of the decks of the ship cabin 100 by the corresponding bulkheads of the reactor cabins 1. The first to third spaces in the middle of the ship cabin 100 corresponding to the two sides of the reactor cabin 1 can be combined to form the first-layer auxiliary cabin 2, the second-layer auxiliary cabin 3 and the third-layer auxiliary cabin 4. In this way, the interior space of the ship cabin 100 can be fully utilized to arrange the reactor cabin 1 and the auxiliary cabin, so as to improve the space utilization rate of the ship cabin 100.

[0077] After the above technical solution is adopted, the application has the following beneficial effects:

[0078] 1) The two reactor cabins 1 are arranged longitudinally in front of and behind the central axis in the length direction of the ship cabin 100, and the third-layer auxiliary cabin 4 is symmetrically arranged on the two sides of the two reactor cabins 1 and is sequentially stacked from bottom to top. The reactor cabin 1 and the auxiliary cabin have higher overall integration and higher space utilization rate, and sufficient arrangement space is provided for the arrangement of the corresponding equipment and supporting systems of the two reactors 11, so as to meet the compact arrangement requirement of the offshore nuclear power platform with double reactors.

[0079] 2) The safety systems of the two reactors 11 are arranged in the staggered and opposite first-layer equipment rooms 21 of different first-layer auxiliary cabins 2, respectively. On the one hand, the physical isolation of the safety devices A51 and the safety devices B52 of the double safety systems in space is realized by the independent first-layer equipment rooms 21, and on the other hand, the staggered and cross arrangement of the safety devices A51 and the safety devices B52 of the double safety systems is realized, so as to realize the cross arrangement isolation of the two groups of safety systems and play the interlocking role. The resistance to external disasters is further improved, the influence of common mode accidents on the safety systems of the reactor cabin 1 can be avoided to the greatest extent, and the safety of the offshore nuclear power platform is further improved.

[0080] 3) Each layer of auxiliary cabin is symmetrically provided with a longitudinal personnel passage away from the outer side of the reactor cabin 1, and each layer of personnel passage is connected upward and downward through the stairs 6 and escape passages 7, realizing the one-side connection between the auxiliary cabins of each layer of the two reactors 11, and the same-side auxiliary cabins can share the stairs 6 and escape passages 7, and the two reactors 11 can share the same hot changing room 43 of the three-layer auxiliary cabin 4, effectively reducing the arrangement number of personnel passages, escape passages 7, hot changing rooms 43, personnel gates and the like in the auxiliary cabin, and significantly improving the platform economy.

[0081] 4) The entire two-layer equipment room 31 of the two-layer auxiliary cabin 3 is provided in a longitudinal through form without any partition wall or compartment in the middle, providing sufficient arrangement space for the supply pipeline 8, facilitating the arrangement of the supply pipeline 8 of the two reactors 11 in the two-layer auxiliary cabin 3 in a safer manner. Moreover, no other reactor 11 auxiliary equipment or support system is arranged in the two-layer auxiliary cabin 3 except for the high-energy supply pipeline 8, and the two-layer equipment layer is physically isolated from the two-layer personnel passage 32 through the two-layer longitudinal partition wall 34, and the pressure relief well 35 is arranged to realize the pressure relief of the two-layer equipment room 31, which can maximize the adverse effects of the rupture of the high-energy supply pipeline 8 on personnel and equipment, and improve the safety of the offshore platform.

[0082] 5) The ventilation device 91 and the water replenishment tank 92 of the two reactors 11 are respectively arranged in the staggered opposite three-layer equipment rooms 41 of different three-layer auxiliary cabins 4, on the one hand, the ventilation device 91 and the water replenishment tank 92 of the double reactors 11 are physically isolated in space through the independent three-layer equipment room 41, and on the other hand, the staggered and crossed arrangement of the two groups of ventilation devices 91 and water replenishment tanks 92 realizes the crossed arrangement and isolation of the two groups of ventilation devices 91 and water replenishment tanks 92, which plays a mutual locking role, further improves the resistance to external disasters, and can maximize the adverse effects of common mode accidents on the reactor cabin 1, and further improves the safety of the offshore nuclear power platform.

[0083] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent flow transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A nuclear power platform arrangement, c h a r a c t e r i s e d i n that The reactor vessel (1) is longitudinally arranged, and a first auxiliary vessel (2), a second auxiliary vessel (3) and a third auxiliary vessel (4) are symmetrically arranged on both sides of the reactor vessel (1) and are sequentially stacked from bottom to top; each reactor vessel (1) is provided with a reactor (11); Each first auxiliary vessel (2) is divided into two longitudinally arranged first equipment rooms (21) for installing first auxiliary equipment (5) on the inner side of the reactor vessel (1), and the two first equipment rooms (21) correspond to the two reactor vessels (1) respectively; The first auxiliary equipment (5) includes two groups of safety systems connected with the corresponding reactor (11), and each group of safety systems includes a safety device A (51) and a safety device B (52); The safety device A (51) and the safety device B (52) in the same group are arranged in two staggered opposite first equipment rooms (21) in different first auxiliary vessels (2), and each first equipment room (21) is provided with a safety device A (51) or a safety device B (52).

2. A nuclear power platform arrangement according to claim 1, characterized in that, Two safety devices A (51) or two safety devices B (52) in different groups are arranged in two directly opposite first equipment rooms (21) in different first auxiliary vessels (2).

3. A nuclear power platform arrangement according to claim 1, characterized in that, Each first auxiliary vessel (2), second auxiliary vessel (3) and third auxiliary vessel (4) is divided into a first personnel passage (22), a second personnel passage (32) and a third personnel passage (42) longitudinally through the outer side of the reactor vessel (1), and the first personnel passage (22), the second personnel passage (32) and the third personnel passage (42) on the same side are connected by stairs (6) and escape passages (7) up and down; Two first equipment rooms (21) in the same first auxiliary vessel (2) are connected with adjacent first personnel passages (22) through first personnel gates (23).

4. A nuclear power platform arrangement according to claim 3, characterised in that, The stairs (6) and the escape passages (7) are respectively located at opposite ends in the longitudinal direction of the personnel passage; The escape passage (7) is connected with the personnel passage through an escape gate (71), and a vertical ladder or a slide rod is arranged in the escape passage (7) and vertically connected to the first personnel passage (22), the second personnel passage (32) and the third personnel passage (42) on the same side and the external space.

5. A nuclear power platform arrangement according to claim 3, c h a r a c t e r i z e d i n that Each second auxiliary vessel (3) is divided into a second equipment room (31) longitudinally through the inner side of the reactor vessel (1) for installing a supply pipeline (8); The supply pipeline (8) is provided with two groups connected with the corresponding reactor (11), and each group of supply pipelines (8) includes a main steam pipeline (81) and a main water pipeline (82); the main steam pipeline (81) and the main water pipeline (82) in the same group are arranged in different second equipment rooms (31) and symmetrically arranged on both sides of the corresponding reactor (11). The two-layer equipment room (31) in the same two-layer auxiliary cabin (3) is communicated with the adjacent two-layer personnel passage (32) through a two-layer personnel gate (33).

6. A nuclear power platform arrangement according to claim 5, characterised in that, Each two-layer equipment room (31) is communicated with the outside space through at least one pressure relief well (35) penetrating the same side three-layer auxiliary cabin (4) upward, and the pressure relief well (35) is arranged at the arrangement area of the supply pipeline (8).

7. A nuclear power platform arrangement according to claim 5, characterised in that, Each three-layer auxiliary cabin (4) is divided into two three-layer equipment rooms (41) for installing three-layer auxiliary equipment (9) longitudinally towards the inner side of the reactor cabin (1), and the two three-layer equipment rooms (41) are one-to-one corresponding to the two reactor cabins (1).

8. A nuclear power platform arrangement according to claim 7, characterised in that, The two three-layer equipment rooms (41) and the three-layer personnel passage (42) in at least one three-layer auxiliary cabin (4) define a hot changing room (43) between the two reactor cabins (1), and the hot changing room (43) is communicated to the two reactor cabins (1) through two changing room gates (44) respectively. The three-layer equipment room (41) or / and the hot changing room (43) in the same three-layer auxiliary cabin (4) is communicated with the adjacent three-layer personnel passage (42) through a three-layer personnel gate (45).

9. A nuclear power platform arrangement according to claim 7, characterised in that, The three-layer auxiliary equipment (9) includes two groups of ventilation devices (91) and water supply tanks (92) connected with the corresponding reactor (11) respectively, and the ventilation devices (91) and water supply tanks (92) in the same group are arranged in two opposite three-layer equipment rooms (41) of different three-layer auxiliary cabins (4) respectively and are on both sides of the corresponding reactor (11).

10. A nuclear power platform arrangement according to claim 7, characterised in that, The corresponding first-layer equipment room (21), two-layer equipment room (31) and three-layer equipment room (41) on the same side are vertically communicated through a hoist well (10) up and down.

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