Water tank device of nuclear reactor containment and nuclear reactor containment equipment

Abstract

The invention provides a water tank device of a nuclear reactor containment and nuclear reactor containment equipment, relates to the technical field of nuclear industry safety, and aims to solve the problem that the design and construction difficulty of the containment in the prior art is relatively high. The water tank device of the nuclear reactor containment is applied to the nuclear reactor containment. The water tank device comprises a mounting framework and a water tank, the mounting framework comprises a first annular mounting plate, a second annular mounting plate and a hollow cylindrical shell, a mounting space is defined by the first annular mounting plate, the second annular mounting plate, the shell and the outer wall of the nuclear reactor containment, and the water tank is fixedly mounted in the mounting space; and at least one of the first annular mounting plate, the second annular mounting plate and the shell is of a hollow steel skeleton structure. The self weight of the water tank device can be reduced, and the design and construction difficulty of the nuclear reactor containment can be simplified.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear industry safety, and in particular to a water tank device for a nuclear reactor containment and nuclear reactor containment equipment. Background Art

[0002] With the development of modern nuclear power technology, passive technology has been gradually promoted. The mainstream nuclear power plant design arranges external water tanks at high positions in the containment. Using the principle of gravity, when an accident occurs, the water in the high-position water tank moves downward by gravity, completing heat exchange in the containment and exporting the heat in the containment.

[0003] However, external water tanks are usually designed as reinforced concrete wall panels with steel linings inside. Since the density of concrete is much greater than that of water, its deadweight greatly exceeds the weight of the water it carries. Since nuclear power plants have high seismic resistance requirements and the water tanks are arranged at a high position, the seismic effect on the containment is relatively large, increasing the difficulty of the containment design and construction. Summary of the invention

[0004] The embodiment of the present invention provides a water tank device for a nuclear reactor containment vessel and a nuclear reactor containment vessel equipment, so as to solve the problem in the prior art that the external water tank of the containment vessel has a large deadweight, which makes the design and construction of the containment vessel difficult.

[0005] To solve the above technical problems, the present invention is achieved as follows:

[0006] In a first aspect, an embodiment of the present invention provides a water tank device for a nuclear reactor containment vessel, which is applied to a nuclear reactor containment vessel, and the water tank device includes a mounting frame and a water tank;

[0007] The mounting frame comprises: a first annular mounting plate, a second annular mounting plate and a hollow cylindrical shell, the shell is arranged around the nuclear reactor containment shell, and the shell is spaced apart from the outer wall of the nuclear reactor containment shell, the first end of the shell is fixedly connected to the outer wall of the nuclear reactor containment shell through the first annular mounting plate, the second end of the shell is fixedly connected to the outer wall of the nuclear reactor containment shell through the second annular mounting plate, and the first annular mounting plate, the second annular mounting plate, the shell and the outer wall of the nuclear reactor containment shell enclose an installation space, and the water tank is fixedly installed in the installation space;

[0008] At least one of the first annular mounting plate, the second annular mounting plate and the outer shell is a hollow steel skeleton structure.

[0009] In a second aspect, an embodiment of the present invention provides a nuclear reactor containment device, comprising a nuclear reactor containment and the water tank device described in the first aspect.

[0010] In an embodiment of the present invention, the water tank device is fixedly connected to the nuclear reactor containment by setting the mounting frame to place the water tank. The mounting frame includes a first annular mounting plate, a second annular mounting plate and a hollow cylindrical outer shell. Since at least one of the first annular mounting plate, the second annular mounting plate and the outer shell is a hollow steel skeleton structure, the dead weight of the water tank device can be reduced. Therefore, when applied to the nuclear reactor containment, the seismic effect of the nuclear reactor containment can be reduced, and the internal force of the prestressed containment is also reduced accordingly, which can simplify the layout of the prestressed system and reduce the ordinary steel bars required for earthquake resistance, thereby simplifying the design and construction difficulty of the nuclear reactor containment, and can effectively reduce the amount of civil engineering work and improve the economy of nuclear power projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0012] Figure 1 It is a schematic structural diagram of a water tank device of a nuclear reactor containment vessel and a nuclear reactor containment vessel provided by an embodiment of the present invention;

[0013] Figure 2 is a structural schematic diagram of a first annular mounting plate provided by an embodiment of the present invention;

[0014] Figure 3 It is a schematic diagram of a hollow steel skeleton structure provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0017] The embodiment of the present invention provides a water tank device for a nuclear reactor containment vessel and a nuclear reactor containment vessel equipment, so as to solve the problem in the prior art that the external water tank of the containment vessel has a large deadweight, which makes the design and construction of the containment vessel difficult.

[0018] To solve the above technical problems, the present invention is achieved as follows:

[0019] See also Figure 1 , Figure 1 A schematic diagram of a water tank device for a nuclear reactor containment vessel and a structural diagram of a nuclear reactor containment vessel provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the water tank device for the nuclear reactor containment is applied to the nuclear reactor containment 100, and the water tank device includes a mounting frame 200 and a water tank;

[0020] The installation frame includes: a first annular installation plate 210, a second annular installation plate 220 and a hollow cylindrical shell 230, the shell 230 is arranged around the nuclear reactor containment shell 100, and the shell 230 is spaced apart from the outer wall of the nuclear reactor containment shell 100, the first end of the shell 230 is fixedly connected to the outer wall of the nuclear reactor containment shell 100 through the first annular installation plate 210, the second end of the shell 230 is fixedly connected to the outer wall of the nuclear reactor containment shell 100 through the second annular installation plate 220, and the first annular installation plate 210, the second annular installation plate 220, the shell 230 and the outer wall of the nuclear reactor containment shell 100 enclose an installation space, and the water tank is fixedly installed in the installation space;

[0021] At least one of the first annular mounting plate 210 , the second annular mounting plate 220 and the housing 230 is a hollow steel skeleton structure.

[0022] It should be noted that the water tank is used to realize heat dissipation in the nuclear reactor containment vessel 100. The specific working principle and process are as follows:

[0023] A through hole is provided on the side wall of the nuclear reactor containment 100, and a heat exchanger is provided in the water tank. The input pipe and the output pipe of the heat exchanger in the water tank are respectively arranged in the through hole of the nuclear reactor containment 100. A molten material retention water tank and a pressure vessel are also provided in the nuclear reactor containment 100. The output pipe of the heat exchanger is connected to the molten material retention water tank, and the molten material retention water tank and the pressure vessel are connected. In the event of a safety accident causing the core temperature in the pressure vessel to exceed the standard, the molten material retention water tank in the pile transports coolant to the pressure vessel. After evaporation, the coolant enters the heat exchanger through the output pipe of the heat exchanger to exchange heat with the coolant in the water tank, thereby realizing the heat extraction in the nuclear reactor containment 100.

[0024] Specifically, the first annular mounting plate 210 and the second annular mounting plate 220 are in annular shapes, and when the distance between the first annular mounting plate 210 and the base 110 of the nuclear reactor containment vessel 100 is greater than the distance between the second annular mounting plate 220 and the base 110 of the nuclear reactor containment vessel 100, the area of ​​the first annular mounting plate 210 is greater than or equal to the area of ​​the second annular mounting plate 220. The outer shell 230 is spaced apart from the outer wall of the nuclear reactor containment vessel 100, that is, there is a certain distance between the outer shell 230 and the outer wall of the nuclear reactor containment vessel 100 to form the installation space, and the installation space is used to place the water tank.

[0025] It should be noted that the steel skeleton may be reinforced concrete or a steel structure, and this application does not make any specific limitation thereto.

[0026] For example, Figure 2 is a schematic structural diagram of a first annular mounting plate provided in an embodiment of the present invention, Figure 3 is a schematic diagram of a hollow steel skeleton structure provided by an embodiment of the present invention, such as Figure 2 and Figure 3 As shown, the first annular mounting plate adopts a hollow steel frame structure, for example Figure 3 The truss structure shown.

[0027] It should be noted that the structural design and shape of the first annular mounting plate 210 and the second annular mounting plate 220 can be completely the same.

[0028] In an embodiment of the present invention, the water tank device is fixedly connected to the nuclear reactor containment vessel 100 by setting the mounting frame to place the water tank. The mounting frame includes a first annular mounting plate 210, a second annular mounting plate 220 and a hollow cylindrical outer shell 230. Since at least one of the first annular mounting plate 210, the second annular mounting plate 220 and the outer shell 230 is a hollow steel skeleton structure, the dead weight of the water tank device can be reduced. When applied to the nuclear reactor containment vessel 100, the seismic effect of the nuclear reactor containment vessel 100 can be reduced, and the internal force of the prestressed containment vessel is also reduced accordingly, which can simplify the layout of the prestressed system and reduce the ordinary steel bars required for earthquake resistance, thereby simplifying the design and construction difficulty of the nuclear reactor containment vessel 100, and can effectively reduce the amount of civil engineering works and improve the economy of nuclear power projects.

[0029] It should be noted that, in the position where the water tank is not required to be placed on the mounting bracket, the corresponding first annular mounting plate 210 and the second annular mounting plate 220 may not be provided with a steel frame structure. Figure 2 As shown, the outer wall of the nuclear reactor containment vessel 100 is provided with a protruding buttress column 120, and the mounting bracket corresponding to the buttress column 120 does not need to place a water tank, and thus the first annular mounting plate 210 and the second annular mounting plate 220 corresponding to the buttress column 120 may not be provided with a steel skeleton structure, thereby being able to further reduce the deadweight of the water tank device.

[0030] Optionally, the mounting frame further includes a third annular mounting plate 240, the third annular mounting plate 240 is disposed between the first annular mounting plate 210 and the second annular mounting plate 220, and the first annular mounting plate 210, the second annular mounting plate 220 and the third annular mounting plate 240 are disposed in parallel;

[0031] The inner wall of the outer shell 230 is fixedly connected to the outer wall of the nuclear reactor containment vessel 100 through the third annular mounting plate 240, and the third annular mounting plate 240 divides the installation space into a first installation space 310 and a second installation space 320. The nuclear reactor containment vessel 100 includes a base 110, and the distance between the first installation space 310 and the base 110 is greater than the distance between the second installation space 320 and the base 110. The water tank is fixedly installed in the first installation space 310.

[0032] Specifically, the first annular mounting plate 210, the second annular mounting plate 220 and the third annular mounting plate 240 are arranged in parallel so that the installation of the water tank is relatively stable. When the distance between the third annular mounting plate 240 and the base 110 of the nuclear reactor containment vessel 100 is greater than the distance between the second annular mounting plate 220 and the base 110 of the nuclear reactor containment vessel 100, the area of ​​the third annular mounting plate 240 is greater than or equal to the area of ​​the second annular mounting plate 220.

[0033] It should be noted that the structural design and shape of the third annular mounting plate 240 may be the same as those of the first annular mounting plate 210 and the second annular mounting plate 220 .

[0034] In an embodiment of the present invention, the water tank device can separate the installation space into a first installation space 310 and a second installation space 320 by setting the third annular installation plate 240, so that the water tank can be fixedly installed in the first installation space 310, and the pipe connecting the water tank device and the nuclear reactor containment 100 can be installed in the second installation space 320. Then, when an accident occurs, the coolant of the heat exchanger in the water tank can move downward by gravity to complete the heat exchange of the containment.

[0035] Optionally, the water tank device also includes a water supply pipeline, which is arranged in the second installation space 320, and the water inlet end of the water supply pipeline is connected to the water outlet of the water tank, and the water outlet end of the water supply pipeline is arranged inside the nuclear reactor containment 100.

[0036] Exemplarily, the water supply pipeline includes a first pipe and a second pipe, a heat exchanger is provided in the water tank, the inlet of the heat exchanger is connected to the nuclear reactor containment 100 through the first pipe, the outlet of the heat exchanger is connected to the nuclear reactor containment 100 through the second pipe, and the water outlet end of the second pipe is located inside the nuclear reactor containment 100.

[0037] Specifically, the first pipe can be used to transmit high-temperature steam generated inside the nuclear reactor containment 100, and the second pipe can be used to transmit condensed water obtained after heat exchange with the high-temperature steam, and the condensed water is transmitted back to the inside of the nuclear reactor containment 100 by gravity. The water outlet end of the second pipe is arranged inside the nuclear reactor containment 100, and the water outlet end of the second pipe can be connected to a water tank inside the nuclear reactor containment 100.

[0038] In the embodiment of the present invention, the water tank device is configured to arrange the water pipeline in the second installation space 320 so that in the event of a safety accident, the high-temperature steam generated inside the nuclear reactor containment vessel 100 is transmitted to the heat exchanger through the water pipeline. The heat exchanger exchanges heat with the high-temperature steam, and the resulting condensed water can move downward along the water pipeline by gravity, thereby achieving heat exchange of the nuclear reactor containment vessel 100.

[0039] Optionally, the mounting frame further includes a fourth annular mounting plate 250, the fourth annular mounting plate 250 is disposed between the third annular mounting plate 240 and the second annular mounting plate 220, and the second annular mounting plate 220, the third annular mounting plate 240 and the fourth annular mounting plate 250 are disposed in parallel;

[0040] The inner wall of the outer shell 230 is fixedly connected to the outer wall of the nuclear reactor containment vessel 100 through the fourth annular mounting plate 250 , and the fourth annular mounting plate 250 divides the second installation space 320 into a third installation space 321 and a fourth installation space 322 .

[0041] Specifically, when the distance between the fourth annular mounting plate 250 and the base 110 of the nuclear reactor containment vessel 100 is greater than the distance between the second annular mounting plate 220 and the base 110 of the nuclear reactor containment vessel 100, the area of ​​the fourth annular mounting plate 250 is greater than or equal to the area of ​​the second annular mounting plate 220.

[0042] It should be noted that the structural design and shape of the fourth annular mounting plate 250 may be the same as those of the first annular mounting plate 210 and the second annular mounting plate 220 .

[0043] In the embodiment of the present invention, the water tank device can form a floor structure by providing the fourth annular mounting plate 250 to separate the second mounting space 320 into a third mounting space 321 and a fourth mounting space 322, thereby improving the convenience of maintaining the water tank device.

[0044] Optionally, the first annular mounting plate 210 , the second annular mounting plate 220 and the outer shell 230 are all hollow steel skeleton structures.

[0045] In the embodiment of the present invention, the water tank device can further reduce its own weight and the seismic effect of the nuclear reactor containment vessel 100 by arranging the first annular mounting plate 210, the second annular mounting plate 220 and the outer shell 230 to be hollow steel skeleton structures, thereby further simplifying the design and construction difficulty of the nuclear reactor containment vessel 100.

[0046] Optionally, the water tank device further includes a baffle plate matching the outer shell 230 , wherein the baffle plate is disposed around an outer wall of the outer shell 230 , and the baffle plate is fixedly connected to the outer shell 230 .

[0047] In an embodiment of the present invention, the water tank device can be provided with a baffle plate matching the outer shell 230 so that the baffle plate is arranged around the outer wall of the outer shell 230 to avoid direct exposure of the water tank to the external space, thereby improving the service life of the water tank.

[0048] Optionally, the water tank device further includes a first annular support plate matched with the second annular mounting plate 220 , and the first annular support plate covers a surface of the second annular mounting plate 220 away from the base 110 .

[0049] In an embodiment of the present invention, the water tank device can be configured with a first annular support plate that matches the second annular mounting plate 220, so that the first annular support plate covers the surface of the second annular mounting plate 220 away from the base 110, thereby facilitating maintenance personnel or installers to perform construction operations on the first annular support plate.

[0050] Optionally, the water tank device further includes a second annular support plate matching the third annular mounting plate 240, wherein the second annular support plate covers a surface of the third annular mounting plate 240 away from the base 110;

[0051] The water tank device further includes a third annular support plate matched with the fourth annular mounting plate 250 , and the third annular support plate covers a surface of the fourth annular mounting plate 250 away from the base 110 .

[0052] In an embodiment of the present invention, the water tank device may be configured with a second annular support plate matching the third annular mounting plate 240, so that the second annular support plate covers the surface of the third annular mounting plate 240 away from the base 110, thereby facilitating maintenance personnel or installers to perform construction operations on the second annular support plate.

[0053] Optionally, the third annular mounting plate 240 and the fourth annular mounting plate 250 are hollow steel skeleton structures.

[0054] In the embodiment of the present invention, the water tank device can facilitate the passage of the pipe connecting the water tank device and the nuclear reactor containment vessel 100 between the third annular mounting plate 240 and the fourth annular mounting plate 250 by setting the third annular mounting plate 240 and the fourth annular mounting plate 250 as a hollow steel frame structure, and can further reduce the dead weight of the water tank device.

[0055] An embodiment of the present invention also provides a nuclear reactor containment device, which includes the water tank device as described above. In this embodiment, since the nuclear reactor containment device includes the water tank device as described in the above embodiment, the nuclear reactor containment device can realize various usage processes of the above water tank device and has the same beneficial effects. To avoid repetition, they will not be described here.

[0056] In several embodiments provided by the present invention, it should be understood that it should be noted that, in this article, the term "includes", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0057] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A water tank device for a nuclear reactor containment vessel, applied to a nuclear reactor containment vessel, characterized in that: The water tank device comprises a mounting frame and a water tank; The mounting frame comprises: a first annular mounting plate, a second annular mounting plate and a hollow cylindrical shell, the shell is arranged around the nuclear reactor containment shell, and the shell is spaced apart from the outer wall of the nuclear reactor containment shell, the first end of the shell is fixedly connected to the outer wall of the nuclear reactor containment shell through the first annular mounting plate, the second end of the shell is fixedly connected to the outer wall of the nuclear reactor containment shell through the second annular mounting plate, and the first annular mounting plate, the second annular mounting plate, the shell and the outer wall of the nuclear reactor containment shell enclose an installation space, and the water tank is fixedly installed in the installation space; At least one of the first annular mounting plate, the second annular mounting plate and the outer shell is a hollow steel skeleton structure.

2. The water tank device for a nuclear reactor containment vessel according to claim 1, characterized in that: The mounting frame further includes a third annular mounting plate, the third annular mounting plate is arranged between the first annular mounting plate and the second annular mounting plate, and the first annular mounting plate, the second annular mounting plate and the third annular mounting plate are arranged in parallel; The inner wall of the shell is fixedly connected to the outer wall of the nuclear reactor containment via the third annular mounting plate, and the third annular mounting plate divides the installation space into a first installation space and a second installation space, the nuclear reactor containment includes a base, the distance between the first installation space and the base is greater than the distance between the second installation space and the base, and the water tank is fixedly installed in the first installation space.

3. The water tank device for the nuclear reactor containment vessel according to claim 2, characterized in that: The water tank device also includes a water pipeline, which is arranged in the second installation space, and the water inlet end of the water pipeline is connected to the water outlet of the water tank, and the water outlet end of the water pipeline is arranged inside the nuclear reactor containment.

4. The water tank device for a nuclear reactor containment vessel according to claim 3, characterized in that: The mounting frame further includes a fourth annular mounting plate, the fourth annular mounting plate is arranged between the third annular mounting plate and the second annular mounting plate, and the second annular mounting plate, the third annular mounting plate and the fourth annular mounting plate are arranged in parallel; The inner side wall of the shell is fixedly connected to the outer wall of the nuclear reactor containment vessel through the fourth annular mounting plate, and the fourth annular mounting plate divides the second installation space into a third installation space and a fourth installation space.

5. The water tank device for a nuclear reactor containment vessel according to claim 1, characterized in that: The first annular mounting plate, the second annular mounting plate and the outer shell are all hollow steel skeleton structures.

6. The water tank device for a nuclear reactor containment vessel according to claim 1, characterized in that: The water tank device also includes a baffle plate matched with the shell, the baffle plate is arranged around the outer wall of the shell, and the baffle plate is fixedly connected to the shell.

7. The water tank device for a nuclear reactor containment vessel according to claim 2, characterized in that: The water tank device further comprises a first annular support plate matched with the second annular mounting plate, wherein the first annular support plate covers a surface of the second annular mounting plate away from the base.

8. The water tank device for a nuclear reactor containment vessel according to claim 4, characterized in that: The water tank device further comprises a second annular support plate matching the third annular mounting plate, wherein the second annular support plate covers a surface of the third annular mounting plate away from the base; The water tank device further comprises a third annular support plate matched with the fourth annular mounting plate, wherein the third annular support plate covers a surface of the fourth annular mounting plate away from the base.

9. The water tank device for a nuclear reactor containment vessel according to claim 4, characterized in that: The third annular mounting plate and the fourth annular mounting plate are hollow steel skeleton structures.

10. A nuclear reactor containment device, characterized in that: It comprises a nuclear reactor containment vessel and a water tank device as described in any one of claims 1-9.

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