Containment cooling system

Abstract

The application relates to a containment cooling system, which comprises a water supply module, a ring pipe and a cooling device. The ring pipe of the containment cooling system is arranged on the top of a containment in the circumferential direction of the containment, the ring pipe is communicated with the water supply module, and the ring pipe is provided with a plurality of water outlets which are arranged in the circumferential direction of the ring pipe at intervals. The cooling device is arranged on the outer surface of the containment and is provided with a plurality of cooling channels, the water inlets of the cooling channels are communicated with the water outlets, and the ends of the cooling channels away from the ring pipe are provided with water outlets, so that the water in the water supply module enters the ring pipe, enters the cooling channels arranged on the outer surface of the containment through the water outlets and the water inlets, and the cooling channels in the temperature zones with higher temperatures are arranged in a higher density, the cooling water provided by the water supply module flows through the cooling device which is specially arranged on the outer surface of the containment and is used for preset cooling channels of the containment, so that the application can be used for cooling the different temperature zones of the containment through the cooling water of the special cooling device arranged on the outer surface of the containment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reactor safety facilities, in particular to a containment cooling system. BACKGROUND

[0002] The containment is of particular importance to the safety of a nuclear power plant, and is the last defense of the nuclear power plant in-depth defense, which blocks the fission products from the nuclear fuel and the primary loop radioactive substances from entering the environment. In the event of LOCA or containment internal steam pipe rupture, high-temperature and high-pressure steam will be discharged into the containment and cause the temperature and pressure in the containment to rise rapidly. If the temperature and pressure in the containment are not limited, the pressure in the containment may exceed the design limit and cause the structure of the containment to be damaged, and ultimately lead to the loss of the last defense screen of the nuclear power plant, and the fission products from the nuclear fuel and the primary loop radioactive substances may be released into the environment.

[0003] The function of the containment cooling system is to timely export the heat in the containment during the temperature and pressure rise of the containment, control the temperature and pressure of the containment within an acceptable level, and ensure the structural integrity of the containment. At present, the passive containment cooling system in the nuclear power plant is to install a water tank on the top of the containment, rely on gravity to spray cooling water on the containment, and rely on gravity to form a water film on the outer surface of the steel containment. Since the steel containment has good heat conduction capacity, the heat in the containment is conducted to the surface of the steel containment and heats the water film, and after the water film evaporates, the heat in the containment is taken away and exported by the outlet at the top. However, the water film formed on the surface of the containment by gravity cannot form a preset water film distribution according to the actual heat conduction needs, so it cannot cool and lower the high-temperature area of the containment, thereby limiting the cooling efficiency. SUMMARY

[0004] Therefore, it is necessary to provide a containment cooling system for the problem that the water film formed on the surface of the containment by gravity in the passive containment cooling system in the nuclear power plant cannot form a preset water film distribution according to the actual heat conduction needs, so it cannot cool and lower the high-temperature area of the containment, thereby limiting the cooling efficiency.

[0005] An embodiment of the present application provides a containment cooling system for cooling a containment, wherein the containment has different temperature zones, and the containment cooling system comprises a water supply module, a ring pipe and a cooling device.

[0006] The ring pipe is arranged on the top of the containment along the circumference of the containment, the ring pipe and the water supply module are in communication, and the ring pipe is provided with a plurality of water outlets arranged at intervals along the circumference of the ring pipe.

[0007] The cooling device is arranged on the outer surface of the containment vessel, and has a plurality of cooling channels, the water inlets of the cooling channels are communicated with the water outlets of the ring pipes, and the ends of the cooling channels away from the ring pipes are provided with water outlets; wherein each water outlet is communicated with the water inlet of at least one cooling channel; the cooling channels at the temperature zones with higher temperature are denser.

[0008] In one of the embodiments, the cooling channel comprises a main pipe, a branch pipe and a capillary pipe, one end of the main pipe is provided with the water inlet, the other end of the main pipe is provided with the water outlet, two ends of the branch pipe are respectively communicated with two adjacent main pipes, and two ends of the capillary pipe are respectively communicated with two adjacent branch pipes; or,

[0009] The cooling channel comprises a main pipe, a branch pipe and a capillary pipe, one end of the main pipe is provided with the water inlet, the other end of the main pipe is communicated with a plurality of branch pipes, one end of the branch pipe away from the main pipe is connected with a plurality of capillary pipes, and the other end of the capillary pipe away from the branch pipe is provided with the water outlet; or,

[0010] The cooling channel comprises a main pipe, a branch pipe and a capillary pipe, the branch pipe is divided into a first branch pipe and a second branch pipe, one end of the main pipe is provided with the water inlet, the other end of the main pipe is communicated with a plurality of first branch pipes, one end of the first branch pipe away from the main pipe is connected with a plurality of second branch pipes, two ends of the capillary pipe are respectively communicated with two adjacent branch pipes, and the branch pipe of the cooling channel away from the ring pipe is provided with the water outlet.

[0011] In one of the embodiments, the cooling device comprises a groove plate, a plurality of strip-shaped grooves with an angle to the horizontal plane are formed on the groove plate, the strip-shaped grooves are the cooling channels, one end of the strip-shaped grooves is provided with the water inlet, and the other end of the strip-shaped grooves is provided with the water outlet.

[0012] In one of the embodiments, the groove plate comprises a bottom plate and a plurality of spacer plates arranged in sequence, and the strip-shaped grooves are formed between two adjacent spacer plates and the bottom plate; or,

[0013] The groove plate comprises a plurality of arc-shaped plates arranged side by side and connected, the arc-shaped grooves of the arc-shaped plates are the strip-shaped grooves, and the grooves between the two convex surfaces on the side of two adjacent arc-shaped plates away from the arc-shaped grooves form the cooling channels.

[0014] In one of the embodiments, a plurality of strip-shaped grooves are divided into inner strip-shaped grooves and outer strip-shaped grooves, the inner strip-shaped grooves are arranged on the inner side of the groove plate, the outer strip-shaped grooves are arranged on the outer side of the groove plate, and the inner strip-shaped grooves and the outer strip-shaped grooves are arranged alternately in sequence.

[0015] In one of the embodiments, the water supply module comprises a water tank and a flow guide pipe.

[0016] One end of the flow guide pipe is connected with the ring pipe, and the other end is connected with the water tank.

[0017] In one of the embodiments, the water supply module comprises at least three flow guide pipes, which are evenly arranged around the ring pipe, and the water tank is arranged on the top of the containment vessel.

[0018] In one of the embodiments, the water supply module further comprises a connecting pipe, one end of which is connected with the water tank, and the other end is in communication with at least three flow guide pipes.

[0019] In one of the embodiments, the water supply module comprises a water inlet pipe and a water cavity pipe.

[0020] The water cavity pipe comprises an inner wall and an outer wall, and an annular water cavity is formed between the inner wall and the outer wall, one end of the water cavity pipe is connected with the water inlet pipe, and the other end is connected with the ring pipe, and the inner wall and the outer wall are tapered away from the ring pipe along the axis of the water cavity pipe.

[0021] The water inlet pipe is connected with a water source away from the water cavity pipe.

[0022] In one of the embodiments, the containment vessel cooling system further comprises an outer shell.

[0023] The outer shell is arranged outside the containment vessel and is spaced apart from the containment vessel, an air outlet is formed on the top of the outer shell, and a plurality of air inlets are formed on the bottom of the outer shell.

[0024] The ring pipe in the above-mentioned containment vessel cooling system is arranged on the top of the containment vessel along the circumference of the containment vessel, the ring pipe is in communication with the water supply module, and the ring pipe is provided with a plurality of water outlets arranged at intervals along the circumference of the ring pipe. The cooling device is arranged on the outer surface of the containment vessel, the cooling device has a plurality of cooling channels, the water inlets of the cooling channels are in communication with the water outlets, and the water outlets of the cooling channels are formed away from the ring pipe. Each water outlet is in communication with the water inlet of at least one cooling channel. Thus, the water in the water supply module can enter the cooling channels arranged on the outer surface of the containment vessel through the water outlets and the water inlets of the cooling channels after entering the ring pipe, and the cooling channels in the higher temperature zone are more densely arranged, and the cooling water provided by the water supply module flows through the cooling device preset for the containment vessel, so that the specific cooling device arranged on the outside of the containment vessel can cool the different temperature zones of the containment vessel by the cooling water. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the containment vessel cooling system of one embodiment.

[0026] Figure 2 Structure diagram of a containment cooling system according to a further embodiment.

[0027] Figure 3 Structure diagram of a cooling device according to a further embodiment. Figure 2 Enlarged view of a cooling device.

[0028] Figure 4 Structure diagram of a slot plate according to a further embodiment.

[0029] Figure 5 Structure diagram of a slot plate according to a further embodiment.

[0030] Figure 6 Structure diagram of a slot plate according to a further embodiment.

[0031] Figure 7 Structure diagram of a water guide pipe and a water cavity pipe according to an embodiment.

[0032] 100 - containment cooling system;

[0033] 110 - water supply module; 111 - water tank; 112 - flow guide pipe; 113 - connecting pipe; 114 - water guide pipe; 115 - water cavity pipe; 116 - water valve;

[0034] 120 - ring pipe; 121 - water outlet;

[0035] 130 - cooling device; 131 - cooling channel; 132 - water inlet; 133 - water outlet; 134 - main pipe; 135 - branch pipe; 136 - capillary pipe; 137 - slot plate; 1371 - bottom plate; 1372 - partition plate; 138 - strip-shaped slot; 1381 - arc-shaped plate; 1382 - inner strip-shaped groove; 1383 - outer strip-shaped groove; 1384 - arc-shaped slot; 1385 - convex surface; 139 - water discharge pipe;

[0036] 140 - outer shell; 141 - air outlet; 142 - air inlet;

[0037] 210 - containment. DETAILED DESCRIPTION

[0038] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the present application.

[0039] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0040] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0041] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0042] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] It is to be noted that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is to be understood that when a method is referred to as comprising a step or comprising a specific combination of steps, the method can include additional or other steps even though not specifically disclosed.

[0044] Referring to Figure 1 , Figure 1 A structure diagram of a containment cooling system 100 in an embodiment of the present application is shown. The containment cooling system 100 provided by the embodiment of the present application is used to cool the containment 210, the containment 210 has different temperature zones, and the containment cooling system 100 comprises a water supply module 110, a ring pipe 120, and a cooling device 130.

[0045] The ring pipe 120 in the above-mentioned containment cooling system 100 is arranged on the top of the containment 210 along the circumferential direction of the containment 210, the ring pipe 120 is in communication with the water supply module 110, and the ring pipe 120 is provided with a plurality of water outlets 121 arranged at intervals along the circumferential direction of the ring pipe 120. The cooling device 130 is arranged on the outer surface of the containment 210, the cooling device 130 has a plurality of cooling channels 131, the water inlets 132 of the cooling channels 131 are in communication with the water outlets 121 of the ring pipe, and the cooling channels 131 are provided with water outlets 133 at the ends away from the ring pipe 120. Each water outlet 121 is in communication with the water inlet 132 of at least one cooling channel 131. Thus, the water in the water supply module 110 can enter the ring pipe 120, and then enter the cooling channels 131 arranged on the outer surface of the containment 210 through the water outlets 121 and the water inlets 132 of the cooling channels 131, and the cooling channels 131 in the temperature zone with a higher temperature are more densely arranged, and the cooling water provided by the water supply module 110 flows through the cooling device 130 with the pre-set cooling channels 131 for the containment 210, so that the embodiment of the present application can cool and lower the temperature of the different temperature zones of the containment 210 by arranging the specific cooling device 130 on the outside of the containment 210 and using the cooling water to cool and lower the temperature of the different temperature zones of the containment 210, and the area of the outer surface of the different temperature zones of the containment 210 is increased, so that the different temperature zones of the containment 210 can be cooled and lowered in temperature by air cooling. In a general accident, the containment 210 can be cooled and lowered in temperature by air cooling.

[0046] Referring to Figure 2 and Figure 3In one embodiment, the cooling channel 131 comprises a main pipe 134, a branch pipe 135 and a capillary pipe 136, one end of the main pipe 134 is provided with the water inlet 132, the other end of the main pipe 134 is provided with the water outlet 133, two ends of the branch pipe 135 are respectively communicated with two adjacent main pipes 134, two ends of the capillary pipe 136 are respectively communicated with two adjacent branch pipes 135, so that the cooling water of the water supply module 110 enters the main pipe 134 through the connection of the water inlet 132 and the water outlet 121, and then enters the branch pipes 135 and the capillary pipes 136 distributed outside the containment vessel 210, the branch pipes 135 and the capillary pipes 136 are communicated in the above-mentioned bifurcated manner, so that the cooling water has more flow modes, and the main pipes 134, the branch pipes 135 and the capillary pipes 136 with different densities can be set according to the temperature of different temperature zones of the containment vessel 210, so that the different temperature zones of the containment vessel 210 can be cooled in a targeted manner, and then the cooling water is discharged through the water outlet 133 after absorbing the heat of the containment vessel 210.

[0047] In another embodiment, the cooling channel 131 comprises a main pipe 134, a branch pipe 135 and a capillary pipe 136, one end of the main pipe 134 is provided with the water inlet 132, the other end of the main pipe 134 is communicated with a plurality of branch pipes 135, one end of the branch pipe 135 away from the main pipe 134 is connected with a plurality of capillary pipes 136, and the other end of the capillary pipe 136 away from the branch pipe 135 is provided with the water outlet 133, so that the cooling water of the water supply module 110 enters the main pipe 134 through the connection of the water inlet 132 and the water outlet 121, and then enters the branch pipes 135 and the capillary pipes 136 distributed outside the containment vessel 210, the main pipe 134 is communicated with a plurality of branch pipes 135, and one end of the branch pipe 135 away from the main pipe 134 is connected with a plurality of capillary pipes 136, so that the cooling water flows quickly through different areas of the containment vessel 210 under the action of gravity in the above-mentioned bifurcated manner. The main pipes 134, the branch pipes 135 and the capillary pipes 136 with different densities can be set according to the temperature of different temperature zones of the containment vessel 210, so that the different temperature zones of the containment vessel 210 can be cooled in a targeted manner, and then the cooling water is discharged through the water outlet 133 after absorbing the heat of the containment vessel 210.

[0048] In yet another embodiment, the cooling channel 131 comprises a main pipe 134, branch pipes 135, and capillary pipes 136, the branch pipes 135 are divided into first branch pipes and second branch pipes, one end of the main pipe 134 is provided with a water inlet 132, the other end of the main pipe 134 is communicated with a plurality of first branch pipes, one end of the first branch pipe away from the main pipe 134 is connected with a plurality of second branch pipes, two ends of the capillary pipe 136 are communicated with two adjacent branch pipes 135 respectively, and the branch pipe 135 of the cooling channel 131 away from the ring pipe 120 is provided with a water outlet 133. Thus, when the water inlet 132 of the main pipe 134 is connected with the water outlet 121, the cooling water of the water supply module 110 enters the main pipe 134, and then enters the branch pipes 135 and the capillary pipes 136 distributed outside the containment vessel 210. The other end of the main pipe 134 is communicated with a plurality of first branch pipes, one end of the first branch pipe away from the main pipe 134 is connected with a plurality of second branch pipes, two ends of the capillary pipe 136 are communicated with two adjacent branch pipes 135 respectively, so that the cooling water flows through different areas of the containment vessel 210 quickly under the action of gravity along the above-mentioned bifurcated form. Meanwhile, the capillary pipe 136 communicates two adjacent branch pipes 135, and the density of the main pipe 134, the branch pipe 135, and the capillary pipe 136 is preset according to the temperature of different temperature zones of the containment vessel 210, so that the different temperature zones of the containment vessel 210 can be cooled in a targeted manner. Then, the cooling water is discharged through the water outlet 133 after absorbing the heat of the containment vessel 210.

[0049] In other embodiments, the arrangement of the main pipe 134, the branch pipe 135, and the capillary pipe 136 can also be other forms, as long as the main pipe 134, the branch pipe 135, and the capillary pipe 136 are communicated, and the density of the main pipe 134, the branch pipe 135, and the capillary pipe 136 is preset according to the temperature of different temperature zones of the containment vessel 210, so that the different temperature zones of the containment vessel 210 can be cooled in a targeted manner.

[0050] Referring to Figure 4 In another embodiment, a plurality of partition plates 1372 are arranged outside the containment vessel 210 in sequence, the plurality of partition plates 1372 and the shell of the containment vessel form a groove plate 137, and a strip-shaped groove 138 is formed between two adjacent partition plates 1372 and the containment vessel 210.

[0051] Specifically, the partition plate 1372 is a rib steel or a steel sheet.

[0052] Referring to Figure 6In another embodiment, the groove plate 137 comprises a plurality of arc-shaped plates 1381 arranged side by side and connected, the openings of the arc-shaped plates 1381 are arranged to face away from the containment vessel 210, the arc-shaped grooves 1384 of the arc-shaped plates 1381 are strip-shaped grooves 138, and the recesses between the two convex surfaces 1385 of the two adjacent arc-shaped plates 1381 facing away from the arc-shaped grooves 1384 form cooling channels 131 with the containment vessel 210, so that the cooling water of the water supply module 110 can enter the arc-shaped grooves 1384 of the groove plate 137 and the cooling channels 131 between the recesses between the two convex surfaces 1385 of the two adjacent arc-shaped plates 1381 facing away from the arc-shaped grooves 1384 and the containment vessel 210 via the water inlet 132, thereby increasing the contact area of the cooling water with the containment vessel 210 and the groove plate 137 connected with the containment vessel 210, so that the cooling water can sufficiently cool the containment vessel 210, and then the cooling water is discharged through the water outlet 133 after absorbing the heat of the containment vessel 210.

[0053] In another embodiment, the groove plate 137 comprises a plurality of arc-shaped plates 1381 arranged side by side and connected, the openings of the arc-shaped plates 1381 are arranged to face away from the containment vessel 210, the arc-shaped grooves 1384 of the arc-shaped plates 1381 are strip-shaped grooves 138, and the recesses between the two convex surfaces 1385 of the two adjacent arc-shaped plates 1381 facing away from the arc-shaped grooves 1384 form cooling channels 131 with the containment vessel 210, so that the cooling water of the water supply module 110 can enter the arc-shaped grooves 1384 of the groove plate 137 and the cooling channels 131 between the recesses between the two convex surfaces 1385 of the two adjacent arc-shaped plates 1381 facing away from the arc-shaped grooves 1384 and the containment vessel 210 via the water inlet 132, thereby increasing the contact area of the cooling water with the containment vessel 210 and the groove plate 137 connected with the containment vessel 210, so that the cooling water can sufficiently cool the containment vessel 210, and then the cooling water is discharged through the water outlet 133 after absorbing the heat of the containment vessel 210.

[0054] Specifically, the arc-shaped grooves 1384 are arranged on the surface of the containment vessel 210, so that the arc-shaped grooves 1384 on the outer surface of the containment vessel 210 form cooling channels 131 for water cooling and / or air cooling of the containment vessel 210.

[0055] Preferably, the inner wall of the arc-shaped groove 1384 is gradually expanded along the axis of the arc-shaped groove 1384 in a direction away from the water inlet 132.

[0056] Referring to Figure 5In one of the embodiments, the plurality of strip-shaped grooves 138 are divided into inner strip-shaped grooves 1382 and outer strip-shaped grooves 1383, the inner side of the groove plate 137 is provided with the inner strip-shaped grooves 1382, the outer side of the groove plate 137 is provided with the outer strip-shaped grooves 1383, and the inner strip-shaped grooves 1382 and the outer strip-shaped grooves 1383 are alternately arranged in sequence, so that the cooling water of the water supply module 110 enters the inner strip-shaped grooves 1382 and the outer strip-shaped grooves 1383 through the water inlet 132, the contact area of the cooling water with the containment vessel 210 and the groove plate 137 connected with the containment vessel 210 is increased, so that the cooling water can sufficiently cool the containment vessel 210, and then the cooling water is discharged through the water outlet 133 after absorbing the heat of the containment vessel 210.

[0057] Specifically, referring to the drawings, the openings of the inner strip-shaped grooves 1382 face the containment vessel 210, and the openings of the outer strip-shaped grooves 1383 face away from the containment vessel 210.

[0058] Specifically, the containment vessel 210 has a plurality of strip-shaped grooves 138, the plurality of strip-shaped grooves 138 are divided into inner strip-shaped grooves 1382 and outer strip-shaped grooves 1383, the inner side of the containment vessel 210 is provided with the inner strip-shaped grooves 1382, and the outer side of the containment vessel 210 is provided with the outer strip-shaped grooves 1383, so that the containment vessel 210 can be water-cooled and / or air-cooled through the outer strip-shaped grooves. At the same time, the containment vessel 210 is provided with the inner strip-shaped grooves 1382 and the outer strip-shaped grooves 1383, which increases the surface area of the containment vessel, so that the containment vessel can be better cooled by air.

[0059] Referring to Figure 1 In one of the embodiments, the water supply module 110 includes a water tank 111 and a flow guide pipe 112, one end of the flow guide pipe 112 is connected with the ring pipe 120, and the other end is connected with the water tank 111, so that the water in the water tank 111 can enter the cooling device 130 through the flow guide pipe 112 and the ring pipe 120 to cool the containment vessel 210.

[0060] In one of the embodiments, the water supply module 110 includes at least three flow guide pipes 112, the flow guide pipes 112 are uniformly arranged around the ring pipe 120, and the water tank 111 is arranged on the top of the containment vessel 210, so that the height difference between the water tank 111 and the containment vessel 210 is larger, and the water tank 111 is higher, so that the gravitational potential energy of the water in the water tank 111 can be increased, and at the same time, the water tank 111 is connected with the ring pipe 120 through the three flow guide pipes 112, so that the cooling water can flow through the cooling device 130 more quickly.

[0061] Specifically, the water supply module 110 further comprises a connecting pipe 113, one end of the connecting pipe 113 is connected with the water tank 111, and the other end is communicated with the at least three flow guide pipes 112, the water tank 111 is divided into the flow guide pipes 112 through the connecting pipe 113, so that the gravitational potential energy of the water in the water tank 111 is increased, the cooling water can flow through the cooling device 130 more quickly, and the aperture of the hole directly connecting between the water tank 111 and the at least three flow guide pipes 112 is reduced, so that the water tank 111 can be better indirectly connected with the flow guide pipes 112 through the connecting pipe 113.

[0062] Preferably, the connecting pipe 113 is provided with a water valve 116, which can be opened or closed to deliver cooling water.

[0063] Referring to Figure 7 In one embodiment, the water supply module 110 comprises a water guide pipe 114 and a water cavity pipe 115. The water cavity pipe 115 comprises an inner wall (not shown in the figure) and an outer wall (not shown in the figure), and an annular water cavity is formed between the inner wall and the outer wall. One end of the water cavity pipe 115 is connected with the water guide pipe 114, and the other end is connected with the ring pipe 120. The inner wall and the outer wall are tapered away from the ring pipe 120 along the axis of the water cavity pipe 115. The water guide pipe 114 is connected with a water source away from one end of the water cavity pipe 115. Cooling water in the water source can be introduced into the water cavity of the water cavity pipe 115 through the water guide pipe 114. Since the water cavity pipe 115 is connected with the ring pipe 120 through the inner wall and the outer wall, the water delivery area is increased, so that the cooling water can quickly enter the ring pipe 120 and be distributed into the cooling channels 131 of the cooling device 130, thereby accelerating the cooling efficiency.

[0064] Specifically, the water cavity forms a twisted structure from top to bottom, thereby accelerating the flow rate of the cooling water. It can also be other structures, such as a cylindrical structure, a conical structure, a striped twisted structure, etc., as long as the water guide pipe can introduce the cooling water in the water source into the water cavity of the water cavity pipe 115.

[0065] Referring to Figure 1 In one embodiment, the safety shell cooling system 100 further comprises an outer shell 140, which is arranged outside the safety shell 210 and is spaced apart from the safety shell 210. The outer shell 140 is provided with an air outlet 141 at the top and a plurality of air inlets 142 at the bottom. Air can enter the gap between the outer shell 140 and the safety shell 210 through the air inlets 142 and cool the safety shell 210. The air that has absorbed the heat of the safety shell 210 is then discharged through the air outlet 141, thereby achieving air flow cooling of the safety shell 210 at the same time as the cooling water cooling of the safety shell 210 by the cooling device 130.

[0066] In another embodiment, the outer shell 140 is provided with a plurality of air inlets 142 on the side wall of the end away from the air outlet 141.

[0067] Preferably, the drainage port 133 is connected with a drainage pipe 139, and the drainage pipe 139 is arranged at an angle with the vertical direction, so that the cooling water is not in contact with the containment vessel 210 after being discharged.

[0068] Specifically, the outer shell 140 is made of reinforced concrete.

[0069] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.

[0070] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A containment cooling system, characterized by, The application discloses a containment vessel cooling system for heat dissipation of a containment vessel with different temperature zones, which comprises a water supply module, a ring pipe and a cooling device. The ring pipe is arranged on the top of the containment vessel along the circumference of the containment vessel, and a plurality of water outlets are arranged on the ring pipe along the circumference of the ring pipe. The water supply module comprises a water inlet pipe and a water cavity pipe, the water cavity pipe comprises an inner wall and an outer wall, and a ring is formed between the inner wall and the outer wall The cooling device is arranged on the outer surface of the containment vessel, and the cooling device comprises a plurality of cooling channels. The water cavity pipe is connected to the water inlet pipe at one end and to the ring pipe at the other end, the inner wall and the outer wall taper away from the ring pipe along the axis of the water cavity pipe, and the annular water cavity of the water cavity pipe forms a twisted structure from top to bottom, and the water inlet pipe is connected to a water source away from the one end of the water cavity pipe; The inlet of each cooling channel is communicated with the water outlet, and the end of the cooling channel away from the ring pipe is provided with a water outlet. The cooling channels in the temperature zone with higher temperature are denser.

2. The containment vessel cooling system according to claim 1, wherein The cooling channel comprises a main pipe, a branch pipe and a capillary pipe. The main pipe is provided with the inlet at one end and the water outlet at the other end.

3. The containment cooling system of claim 1, wherein, The branch pipe is connected with two adjacent main pipes. The capillary pipe is connected with two adjacent branch pipes. The cooling channel comprises a main pipe, a branch pipe and a capillary pipe. The main pipe is provided with the inlet at one end and a plurality of branch pipes at the other end.

5. The containment cooling system in accordance with claim 3, wherein, The branch pipe is connected with a plurality of capillary pipes.

6. The containment cooling system in accordance with claim 1, wherein, The capillary pipe is provided with the water outlet at the end away from the branch pipe. The cooling device comprises a groove plate.

7. The containment cooling system of claim 6, wherein, The groove plate is provided with a plurality of strip-shaped grooves at an angle with the horizontal plane. The strip-shaped groove is the cooling channel. The strip-shaped groove is provided with the inlet at one end and the water outlet at the other end.

4. The containment vessel cooling system according to claim 3, wherein The groove plate comprises a bottom plate and a plurality of spacer plates arranged in sequence. The strip-shaped groove is formed between two adjacent spacer plates and the bottom plate. The arc-shaped plate is provided with the strip-shaped groove. The groove is formed between the two convex surfaces of two adjacent arc-shaped plates away from the arc-shaped groove. The strip-shaped grooves are divided into inner strip-shaped grooves and outer strip-shaped grooves. The inner strip-shaped grooves are arranged on the inner side of the groove plate. The outer strip-shaped grooves are arranged on the outer side of the groove plate. The inner strip-shaped grooves and the outer strip-shaped grooves are arranged in sequence alternately. The water supply module comprises a water tank and a flow guide pipe. One end of the flow guide pipe is connected with the ring pipe, and the other end is connected with the water tank. The water supply module comprises at least three flow guide pipes. The flow guide pipes are arranged uniformly around the ring pipe. The water tank is arranged on the top of the containment vessel.

8. The containment cooling system of claim 6, wherein, The water supply module further comprises a connecting pipe, one end of the connecting pipe is connected with the water tank, and the other end of the connecting pipe is communicated with at least three flow guide pipes.

9. The containment cooling system in accordance with claim 1, wherein, The containment cooling system further comprises an outer shell; The outer shell is arranged outside the containment and is spaced apart from the containment, a gas outlet is arranged at the top of the outer shell, and a plurality of gas inlets are arranged at the bottom of the outer shell.

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