Water tank device and containment assembly

Abstract

The invention provides a water tank device and a containment assembly, the water tank device is applied to a containment of a nuclear power station, the containment is of a prestressed concrete structure and is a single-layer containment, buttresses are arranged on the outer surface of the containment, and the water tank device comprises at least two water tanks, at least one end of each water tank in the at least two water tanks abuts against the buttress, the at least two water tanks are connected through a connecting water pipe, and the connecting water pipe and the buttress are oppositely arranged. Therefore, according to the stress characteristics of the concrete structure water tank and the prestressed containment structure, the problem that the concrete structure water tank is externally hung after a double-layer containment is optimized into a single-layer containment is solved.

Description

Technical Field

[0001] This application relates to the field of nuclear power technology, and in particular to a water tank device and containment assembly. Background Technology

[0002] With the development of modern nuclear power technology, the demand for passive safety technologies in nuclear power plants is increasing. Currently, containment structures typically consist of two layers: an outer containment layer made of ordinary concrete to withstand malicious impacts from commercial aircraft; and an inner containment layer made of prestressed concrete with a sealed steel lining to prevent radioactive material leakage. To achieve passive heat conduction to the inner containment layer, a water tank is externally mounted on top of the outer containment shell to conduct heat to the inner containment layer. However, with in-depth research into commercial aircraft impacts involving prestressed reinforced concrete and ordinary reinforced concrete structures, a single-layer prestressed concrete structure can meet the functional requirements of the original double-layer containment without compromising safety. Replacing the original double-layer containment with an externally mounted concrete water tank using a single-layer prestressed concrete containment will significantly improve economic efficiency and construction convenience. Summary of the Invention

[0003] This application provides a water tank device and containment assembly to solve the problem of how to externally mount a concrete structure water tank when optimizing a double-layer containment structure into a single-layer prestressed concrete containment structure.

[0004] To solve the above problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application provide a water tank device applied to the containment vessel of a nuclear power plant. The containment vessel is a prestressed concrete structure and is a single-layer containment vessel. Buttresses are provided on the outer surface of the containment vessel. The water tank device includes at least two water tanks. At least one end of each of the at least two water tanks abuts against the buttresses, and the at least two water tanks are connected by a connecting water pipe, which is arranged opposite to the buttresses.

[0006] As an optional implementation, the buttress includes a first buttress and a second buttress, the connecting water pipe includes a first water pipe and a second water pipe, and the at least two water tanks include a first water tank and a second water tank. The first end of the first water tank abuts against the first surface of the first buttress, the second end of the first water tank abuts against the first surface of the second buttress, the first end of the second water tank abuts against the second surface of the first buttress, and the second end of the second water tank abuts against the second surface of the second buttress. The first end of the first water tank and the first end of the second water tank are connected through the first water pipe, and the second end of the first water tank and the second end of the second water tank are connected through the second water pipe.

[0007] As an optional implementation, the first end of the first water tank is connected to the first water pipe through a first control valve, and the first end of the second water tank is connected to the first water pipe through a second control valve; the second end of the first water tank is connected to the second water pipe through a third control valve, and the second end of the second water tank is connected to the second water pipe through a fourth control valve.

[0008] As an optional implementation, both the first water tank and the second water tank include at least three stacked receiving cavities, and the receiving cavities included in the first water tank are connected to each other in a one-to-one correspondence.

[0009] As an optional implementation, the first water tank includes a first receiving cavity, a second receiving cavity, and a third receiving cavity arranged in sequence, and the second water tank includes a fourth receiving cavity, a fifth receiving cavity, and a sixth receiving cavity arranged in sequence.

[0010] Wherein, the first end of the first receiving cavity is connected to the first end of the fourth receiving cavity through the first water pipe, and the second end of the first receiving cavity is connected to the second end of the fourth receiving cavity through the second water pipe;

[0011] The second and fifth accommodating cavities are provided with a first pipe, and the third and sixth accommodating cavities are provided with a second pipe, which is used to communicate with functional components inside the containment.

[0012] As an optional implementation, the first water tank further includes a first heat exchange cavity, which is connected to the first receiving cavity, the second receiving cavity and the third receiving cavity respectively, and a first heat exchanger is disposed in the first heat exchange cavity.

[0013] As an optional implementation, the second water tank further includes a second heat exchange cavity, which is connected to the fourth, fifth, and sixth accommodating cavities, respectively, and a second heat exchanger is disposed in the second heat exchange cavity.

[0014] As an optional implementation, the buttress column is provided with a receiving groove, and the connecting water pipe is embedded in the receiving groove.

[0015] As an optional implementation, each of the at least two water tanks is a concrete structure.

[0016] Secondly, embodiments of this application provide a containment assembly, including a containment and a water tank device as described in the first aspect.

[0017] In this embodiment, the use of a single-layer containment structure, constructed of prestressed concrete, reduces the overall volume of the containment, thereby correspondingly reducing the volume of the water tank device for heat conduction. Simultaneously, buttresses are provided on the outer surface of the containment, enhancing its connection strength. The water tank device comprises at least two water tanks, each with at least one end abutting against a buttress, and the at least two tanks are connected via connecting pipes, ensuring a high degree of compatibility between the water tank device and the containment. In other words, the water tank device provided in this embodiment solves the problem of externally mounted concrete water tanks after optimizing a double-layer containment structure into a single-layer containment structure, based on the stress characteristics of concrete water tanks and prestressed containment structures. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of the water tank device provided in the embodiments of this application;

[0020] Figure 2 This is a second schematic diagram of the water tank device provided in the embodiments of this application;

[0021] Figure 3 This is provided by the embodiments of this application. Figure 1 Schematic diagram of section I-I;

[0022] Figure 4 This is provided by the embodiments of this application. Figure 1 Schematic diagram of section II-II;

[0023] Figure 5 This is provided by the embodiments of this application. Figure 1 Schematic diagram of section III-III;

[0024] Figure 6 This is provided by the embodiments of this application. Figure 1 Schematic diagram of section IV-IV. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] The terms "first," "second," etc., used in the embodiments of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices. Additionally, the use of "and / or" in this application indicates at least one of the connected objects, such as A and / or B and / or C, representing seven possibilities: including A alone, B alone, C alone, and the presence of both A and B, both B and C, both A and C, and the presence of A, B, and C.

[0027] Please see Figure 1 and Figure 2 , Figure 1 and Figure 2 These are schematic diagrams of a water tank device provided in the embodiments of this application, such as... Figure 1 and Figure 2 As shown, a water tank device 100 is applied to the containment vessel 200 of a nuclear power plant. The containment vessel 200 is a prestressed concrete structure and is a single-layer containment vessel. A buttress column 201 is provided on the outer surface of the containment vessel 200. The water tank device 100 includes at least two water tanks. At least one end of each of the at least two water tanks abuts against the buttress column 201, and the at least two water tanks are connected by a connecting water pipe, which is arranged opposite to the buttress column 201.

[0028] The working principle of the embodiments of this application can be found in the following description:

[0029] Because a single-layer containment structure is used and the containment structure 200 is a prestressed concrete structure, the overall volume of the containment structure 200 is reduced, which in turn reduces the volume of the water tank device 100 that conducts heat to the containment structure 200. At the same time, buttresses 201 are provided on the outer surface of the containment structure 200, which can enhance the connection strength of the containment structure 200. The water tank device 100 includes at least two water tanks, at least one end of each water tank abuts against the buttresses 201, and the at least two water tanks are connected by connecting water pipes, which can ensure a high degree of compatibility between the water tank device 100 and the containment structure 200.

[0030] This application provides a solution for attaching an external water tank device 100 to a single-layer containment structure 200 made of prestressed concrete. The water tank device 100 includes at least two water tanks connected by connecting pipes. This solution addresses the water tank connectivity issue when the water tank device 100 is externally attached to the prestressed concrete containment structure 200. In other words, the water tank device 100 provided in this application, based on the stress characteristics of the concrete structure water tank and the prestressed containment structure, solves the problem of attaching an external concrete structure water tank after optimizing a double-layer containment structure into a single-layer containment structure.

[0031] It should be noted that the water tank device 100 provided in this application embodiment can use passive technologies such as natural convection and gravity to remove and cool the heat inside the containment 200. That is, the water tank device 100 provided in this application embodiment can be referred to as a component of the passive system of the containment 200.

[0032] It should be noted that, Figure 1 It can be understood as Figures 3 to 6 Schematic diagram of section AA in the middle. Figure 2 It can be understood as Figures 3 to 6 Schematic diagram of the BB section.

[0033] The number of buttresses 201 provided on the outer surface of the containment 200 is not limited here. Optionally, there can be two buttresses 201, and the two buttresses 201 can be provided on opposite sides of the outer surface of the containment 200. In this way, the connection strength of the containment 200 can be enhanced by the buttresses 201.

[0034] Furthermore, the specific shape and structure of the buttress 201 are not limited here. Optionally, the buttress 201 can be a rectangular column, and the buttress 201 can be a prestressed concrete structure. Alternatively, the buttress 201 can be an arc-shaped column, and the buttress 201 can be a conventional concrete structure.

[0035] The parameters of the water tanks included in the water tank device 100 may be the same or different. The above parameters include at least one of the following: shape, size, and material.

[0036] As an optional implementation method, see [link to implementation details]. Figures 3 to 6 The buttress 201 includes a first buttress and a second buttress, the connecting water pipe includes a first water pipe 301 and a second water pipe 302, and the at least two water tanks include a first water tank 101 and a second water tank 102. The first end of the first water tank 101 abuts against the first surface of the first buttress, the second end of the first water tank 101 abuts against the first surface of the second buttress, the first end of the second water tank 102 abuts against the second surface of the first buttress, the second end of the second water tank 102 abuts against the second surface of the second buttress, the first end of the first water tank 101 and the first end of the second water tank 102 are connected by the first water pipe 301, and the second end of the first water tank 101 and the second end of the second water tank 102 are connected by the second water pipe 302.

[0037] The first water pipe 301 can be embedded in the cavity formed by the first surface of the first buttress and the first surface of the second buttress, and the second water pipe 302 can be embedded in the cavity formed by the second surface of the first buttress and the second surface of the second buttress. In this way, the first buttress and the second buttress can enhance the limiting effect on the first water pipe 301 and the second water pipe 302.

[0038] It should be noted that the first and second buttresses can be set separately, in which case the first and second buttresses can be set at intervals; or, the first and second buttresses can be an integrally formed structure, that is, the integrally formed first and second buttresses can be set on the entire outer surface of the containment 200.

[0039] In this embodiment, since the buttress 201 includes a first buttress and a second buttress, the connection strength of the containment vessel 200 can be enhanced. The first end of the first water tank 101 and the first end of the second water tank 102 are connected by a first water pipe 301, and the second end of the first water tank 101 and the second end of the second water tank 102 are connected by a second water pipe 302. This makes the connection between the first water tank 101 and the second water tank 102 better.

[0040] As an optional implementation method, see [link to implementation details]. Figures 3 to 6The first end of the first water tank 101 is connected to the first water pipe 301 through the first control valve 3011, and the first end of the second water tank 102 is connected to the first water pipe 301 through the second control valve 3012; the second end of the first water tank 101 is connected to the second water pipe 302 through the third control valve 3021, and the second end of the second water tank 102 is connected to the second water pipe 302 through the fourth control valve 3022.

[0041] The specific types of the first control valve 3011, the second control valve 3012, the third control valve 3021, and the fourth control valve 3022 are not limited here. Optionally, at least some of the first control valve 3011, the second control valve 3012, the third control valve 3021, and the fourth control valve 3022 may be of the same type.

[0042] In this embodiment, the opening and closing of the first water pipe 301 and the second water pipe 302 can be more conveniently controlled by the first control valve 3011, the second control valve 3012, the third control valve 3021 and the fourth control valve 3022, thereby enhancing the control effect on the opening and closing of the first water pipe 301 and the second water pipe 302.

[0043] As an optional implementation, both the first water tank 101 and the second water tank 102 include at least three stacked receiving cavities, and the receiving cavities included in the first water tank 101 and the receiving cavities included in the second water tank 102 are connected in a one-to-one correspondence.

[0044] In this embodiment of the application, both the first water tank 101 and the second water tank 102 include at least three stacked cavities, and the components contained in the different cavities may be different. The different components play different roles, thereby increasing the functional diversity of the first water tank 101 and the second water tank 102.

[0045] It should be noted that the volumes of the different accommodating cavities can also be different. This allows for different volumes of components to be accommodated within each cavity, thereby further enhancing the functional flexibility of the first water tank 101 and the second water tank 102.

[0046] As an optional implementation method, see [link to implementation details]. Figure 1 The first water tank 101 includes a first receiving cavity 1011, a second receiving cavity 1012 and a third receiving cavity 1013 stacked in sequence, and the second water tank 102 includes a fourth receiving cavity 1021, a fifth receiving cavity 1022 and a sixth receiving cavity 1023 stacked in sequence.

[0047] Wherein, the first end of the first receiving cavity 1011 is connected to the first end of the fourth receiving cavity 1021 through the first water pipe 301, and the second end of the first receiving cavity 1011 is connected to the second end of the fourth receiving cavity 1021 through the second water pipe 302.

[0048] The second receiving cavity 1012 and the fifth receiving cavity 1022 are provided with a first pipe, and the third receiving cavity 1013 and the sixth receiving cavity 1023 are provided with a second pipe. The second pipe is used to communicate with the functional components inside the containment 200.

[0049] Both the first receiving cavity 1011 and the fourth receiving cavity 1021 may be filled with water, as detailed in the following document. Figure 4 The first receiving cavity 1011 can be understood as including a second water tank area and a third water tank area, and the fourth receiving cavity 1021 can be understood as including a first water tank area and a third water tank area, wherein the third water tank area is different from the third water tank area included in the first receiving cavity 1011; see also Figure 5 The second receiving cavity 1012 and the fifth receiving cavity 1022 are equipped with first pipes. The areas in the second receiving cavity 1012 where the first pipes are installed can be referred to as pipe zone two and pipe zone three, and the areas in the fifth receiving cavity 1022 where the first pipes are installed can be referred to as pipe zone one and pipe zone three; see also Figure 6 The third receiving cavity 1013 and the sixth receiving cavity 1023 are equipped with second pipes. These second pipes are used to communicate with functional components within the containment vessel 200. The specific type of functional component within the containment vessel 200 is not limited here; this functional component can be a heating element. The second pipes can be used to draw heat from the heating element to the first water tank 101 and the second water tank 102. The area in the third receiving cavity 1013 where the second pipes are installed can be referred to as Pipe Zone Two and Pipe Zone Three, and the area in the sixth receiving cavity 1023 where the second pipes are installed can be referred to as Pipe Zone One and Pipe Zone Three.

[0050] The specific function of the first pipe is not limited here. The first pipe can be connected to other functional components of the first water tank 101 or the second water tank 102. Alternatively, the first pipe can be used to connect the first receiving cavity 1011 and the third receiving cavity 1013, or the first pipe can be used to connect the fourth receiving cavity 1021 and the sixth receiving cavity 1023.

[0051] In this embodiment, the functional components inside the containment 200 can be cooled more effectively, and the variety and flexibility of the arrangement of the first water tank 101 and the second water tank 102 are increased.

[0052] As an optional implementation method, see [link to implementation details]. Figure 5 and Figure 6 The first water tank 101 further includes a first heat exchange cavity 1014, which is connected to the first receiving cavity 1011, the second receiving cavity 1012 and the third receiving cavity 1013 respectively, and a first heat exchanger is provided in the first heat exchange cavity 1014.

[0053] Among them, see Figure 5 and Figure 6 The first heat exchange chamber 1014 can be referred to as the second zone of the water pool.

[0054] In this embodiment of the application, a first heat exchanger is provided in the first heat exchange cavity 1014, and the first heat exchange cavity 1014 is connected to the first receiving cavity 1011, the second receiving cavity 1012 and the third receiving cavity 1013 respectively. In this way, the first heat exchanger can be conveniently used for heat exchange, the heat exchange effect of the first water tank 101 is enhanced, and the receiving effect of the first heat exchanger is also better.

[0055] As an optional implementation method, see [link to implementation details]. Figure 5 and Figure 6 The second water tank 102 also includes a second heat exchange chamber 1024, which is connected to the fourth receiving chamber 1021, the fifth receiving chamber 1022 and the sixth receiving chamber 1023 respectively, and a second heat exchanger is provided inside the second heat exchange chamber 1024.

[0056] The second heat exchanger may have the same structure as the first heat exchanger or may have a different structure; no specific restrictions are imposed here.

[0057] Among them, see Figure 5 and Figure 6 The second heat exchange chamber 1024 can also be referred to as the third zone of the water pool.

[0058] In this embodiment of the application, a second heat exchanger is provided in the second heat exchange cavity 1024, and the second heat exchange cavity 1024 is connected to the fourth receiving cavity 1021, the fifth receiving cavity 1022 and the sixth receiving cavity 1023 respectively. In this way, the second heat exchanger can be conveniently used for heat exchange, the heat exchange effect of the second water tank 102 is enhanced, and the receiving effect of the second heat exchanger is also better.

[0059] It should be noted that, see Figures 3 to 6 The first water tank 101 and the second water tank 102 may also be provided with at least one square hole and one round hole. One of the square hole and the round hole can be used to install other components, and the other can be used by workers to inspect the first water tank 101 and the second water tank 102.

[0060] As an optional implementation, the buttress 201 is provided with a receiving groove, and the connecting water pipe is embedded in the receiving groove.

[0061] The shape of the receiving groove can match the shape of the connecting water pipe, thereby enhancing the limiting effect on the connecting water pipe.

[0062] In this embodiment, the connecting water pipe is embedded in the receiving groove, so that the receiving groove can limit and fix the connecting water pipe.

[0063] As an optional implementation, each of the at least two water tanks is a concrete structure.

[0064] In this embodiment, each water tank is a concrete structure, which results in low maintenance costs and a long service life for each water tank.

[0065] This application provides a containment assembly, including a containment 200 and a water tank device 100 as described in the above embodiments. Since the containment assembly provided in this application includes the water tank device 100 described in the above embodiments, it has the same beneficial technical effects as the above embodiments. The structure of the water tank device 100 can be found in the corresponding descriptions in the above embodiments, and will not be repeated here.

[0066] The above description represents the preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles described in this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A water tank device, characterized in that, The device is applied to the containment vessel of a nuclear power plant. The containment vessel is a prestressed concrete structure and is a single-layer containment vessel. Buttresses are provided on the outer surface of the containment vessel. The water tank device includes at least two water tanks. At least one end of each of the at least two water tanks abuts against the buttresses, and the at least two water tanks are connected by a connecting water pipe, which is arranged opposite to the buttresses.

2. The water tank device according to claim 1, characterized in that, The buttress column includes a first buttress column and a second buttress column. The connecting water pipe includes a first water pipe and a second water pipe. The at least two water tanks include a first water tank and a second water tank. The first end of the first water tank abuts against the first surface of the first buttress column, and the second end of the first water tank abuts against the first surface of the second buttress column. The first end of the first water tank and the first end of the second water tank are connected through the first water pipe, and the second end of the first water tank and the second end of the second water tank are connected through the second water pipe.

3. The water tank device according to claim 2, characterized in that, The first end of the first water tank is connected to the first water pipe through a first control valve, and the first end of the second water tank is connected to the first water pipe through a second control valve; the second end of the first water tank is connected to the second water pipe through a third control valve, and the second end of the second water tank is connected to the second water pipe through a fourth control valve.

4. The water tank device according to claim 2, characterized in that, Both the first water tank and the second water tank include at least three stacked cavities, and the cavities included in the first water tank are connected to each other in a one-to-one correspondence.

5. The water tank device according to claim 4, characterized in that, The first water tank includes a first receiving cavity, a second receiving cavity, and a third receiving cavity arranged in sequence, and the second water tank includes a fourth receiving cavity, a fifth receiving cavity, and a sixth receiving cavity arranged in sequence. Wherein, the first end of the first receiving cavity is connected to the first end of the fourth receiving cavity through the first water pipe, and the second end of the first receiving cavity is connected to the second end of the fourth receiving cavity through the second water pipe; The second and fifth accommodating cavities are provided with a first pipe, and the third and sixth accommodating cavities are provided with a second pipe, which is used to communicate with functional components inside the containment.

6. The water tank device according to claim 5, characterized in that, The first water tank further includes a first heat exchange cavity, which is connected to the first receiving cavity, the second receiving cavity and the third receiving cavity respectively, and a first heat exchanger is provided in the first heat exchange cavity.

7. The water tank device according to claim 5, characterized in that, The second water tank also includes a second heat exchange chamber, which is connected to the fourth, fifth and sixth accommodating chambers respectively, and a second heat exchanger is provided in the second heat exchange chamber.

8. The water tank device according to claim 1, characterized in that, The buttress column is provided with a receiving groove, and the connecting water pipe is embedded in the receiving groove.

9. The water tank device according to any one of claims 1 to 8, characterized in that, Each of the at least two water tanks is a concrete structure.

10. A containment assembly, characterized in that, Includes a containment vessel and a water tank assembly as described in any one of claims 1 to 9.

Images