Underwater cleaning device and nuclear power station cleaning equipment

Abstract

The utility model provides an underwater cleaning device and nuclear power station cleaning equipment, and the underwater cleaning device comprises a suction housing which is internally provided with a suction chamber; the driving assembly communicates with the suction chamber and is used for driving the suction chamber to form a positive pressure state or a negative pressure state; the filtering assembly is installed on the suction shell, and the filtering assembly is provided with a filtering cavity communicated with the suction cavity; the suction assembly is used for communicating the filtering chamber with the to-be-cleaned space; the swing assembly is connected with the suction assembly and the suction shell, and the swing assembly is used for driving at least part of the suction assembly to swing in the to-be-cleaned space; by adopting the technical scheme, the coverage range and the cleaning capability of the underwater cleaning device on the reactor core component are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of nuclear power plant cleaning equipment, and more specifically, to an underwater cleaning device and nuclear power plant cleaning equipment. Background Technology

[0002] During overhaul operations at nuclear power plants, foreign objects have been found in reactor components and at the bottom of the reactor pool, seriously affecting the safety of fuel in the nuclear island. Based on years of experience, the only way to quickly deal with discovered underwater foreign objects is through simple hammering and retrieval, which is characterized by high randomness and low success rate. At the same time, it cannot fully cover the cleaning capabilities of reactor core components and cannot meet current needs. Utility Model Content

[0003] The purpose of this invention is to provide an underwater cleaning device and a nuclear power plant cleaning equipment to solve the technical problems of low success rate and poor cleaning ability of existing hammer-based salvage methods.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] In a first aspect, an underwater cleaning device is provided, comprising:

[0006] The suction housing has a suction chamber inside;

[0007] A drive assembly is connected to the suction chamber, and the drive assembly is used to drive the suction chamber to form a positive pressure state or a negative pressure state.

[0008] A filter assembly is installed in the suction housing, and the filter assembly has a filter chamber that communicates with the suction chamber;

[0009] A suction assembly for connecting the filter chamber and the space to be cleaned; and

[0010] A swing assembly, connecting the suction assembly and the suction housing, the swing assembly being used to drive at least a portion of the suction assembly to swing within the space to be cleaned.

[0011] By adopting the above technical solution, the underwater cleaning device has suction and reverse blowing functions. At the same time, the oscillating component enables the suction component to oscillate within the space to be cleaned, thereby increasing the coverage area of ​​the reactor core components and improving the cleaning capability of the underwater cleaning device.

[0012] In one embodiment, the oscillating assembly includes an oscillating seat disposed on the suction housing and an oscillating power motor disposed on the oscillating seat; the oscillating power motor is connected to the suction assembly and is used to drive the suction assembly to oscillate.

[0013] By adopting the above technical solution, the oscillating component realizes the oscillating function of the suction component through the oscillating power motor, thereby improving the cleaning coverage of the suction component.

[0014] In one embodiment, the oscillating assembly further includes a first gear connected to the power shaft of the oscillating power motor and a second gear disposed on the suction assembly, the second gear meshing with the first gear; the suction assembly rotates around its axis when the oscillating power motor drives the first gear and the second gear to rotate. By adopting the above technical solution, the transmission structure of the oscillating assembly is simple and its reliability is high.

[0015] In one example, the drive assembly includes a drive motor and a fan blade driven by the drive motor. The drive motor is connected to the suction housing, and the fan blade is disposed in the suction chamber. The drive motor is used to drive the fan blade to rotate forward or backward in the suction chamber. The suction chamber forms a positive pressure state when the fan blade rotates forward and a negative pressure state when the fan blade rotates backward.

[0016] By adopting the above technical solution, the drive component has a simple structure and is easy to manufacture.

[0017] In one example, the filter assembly includes a filter cover and a filter element disposed inside the filter cover. The filter cover is disposed in the suction chamber. The filter cover wall is provided with a filter through hole communicating with the suction chamber. The filter element forms the filter chamber and the filter hole, and the filter hole communicates the filter chamber and the filter through hole.

[0018] By adopting the above technical solution, the filter assembly is designed as a separate unit, that is, the filter assembly includes a filter cover and a filter element, which allows the filter element to be removed from the filter cover, thus reducing the problem of high radiation intensity caused by the need to remove the entire filter assembly from the water.

[0019] In one example, the filter assembly further includes a detachable connector that detachably connects the filter cover and the filter element;

[0020] And / or, the filter element is further provided with a viewing window communicating with the filter chamber.

[0021] By adopting the above technical solution, it is easier for staff to observe the filter element and conduct foreign matter recovery and analysis.

[0022] In one example, the suction assembly includes a suction tube body and a water inlet tube body communicating with the suction tube body. The suction tube body is located inside the suction chamber and communicates with the filter chamber. The water inlet tube body is located outside the suction chamber and is used to suction the space to be cleaned.

[0023] The swing assembly is connected to the water inlet pipe and is used to drive the water inlet pipe to swing within the space to be cleaned.

[0024] By adopting the above technical solution, the suction function of the suction component was realized.

[0025] In one example, the end of the suction tube that connects to the water inlet tube is provided with multiple interfaces that can accommodate different water inlet tubes.

[0026] By adopting the above technical solutions, the applicability of underwater cleaning devices has been improved.

[0027] In one example, the suction housing is provided with an outlet that communicates with the suction chamber.

[0028] By adopting the above technical solution, water circulation during the underwater suction process was achieved.

[0029] Secondly, a nuclear power plant cleaning device is provided, comprising a main body of the cleaning device and the aforementioned underwater cleaning device, wherein the underwater cleaning device is connected to the main body of the cleaning device.

[0030] By adopting the above technical solution, in addition to the advantages of the underwater suction device described above, the nuclear power plant cleaning equipment of this example also has the advantage of high cleaning capacity. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the examples of this utility model, the drawings used in the examples will be briefly introduced below. Obviously, the drawings described below are only some examples of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of the underwater cleaning device provided in the example of this utility model.

[0033] Figure 2 This is a perspective structural diagram of the underwater cleaning device provided in the example of this utility model, wherein the suction housing is hidden in the drawing.

[0034] Figure 3 This is a three-dimensional structural diagram of the filter element provided in the example of this utility model.

[0035] Figure 4 This is a three-dimensional structural diagram of the swing assembly provided in the example of this utility model.

[0036] Figure 5This is a three-dimensional structural diagram of the driving component provided in the example described in this utility model.

[0037] Figure 6 This is a three-dimensional structural diagram of the filter assembly provided in the example of this utility model.

[0038] The labels for the attached figures are as follows:

[0039] 1. Suction housing; 2. Drive assembly; 3. Filter assembly; 4. Suction assembly; 5. Oscillating assembly;

[0040] 11. Suction chamber; 12. Outlet; 21. Drive motor; 22. Fan blade; 31. Filter chamber; 32. Filter hole; 33. Filter cover; 34. Filter element; 41. Suction pipe body; 42. Inlet pipe body; 50. Swing base; 51. Swing power motor; 52. Connecting pipe; 53. First gear; 54. Second gear;

[0041] 331. Filter pores. Detailed Implementation

[0042] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0043] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0044] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific examples:

[0046] like Figure 1 and Figure 2 As shown, the present invention provides an underwater cleaning device for cleaning underwater foreign objects in the reactor pool of a nuclear power plant; the underwater cleaning device of the present invention has the functions of underwater suction and blowing to remove and clean foreign objects; the following is a detailed description:

[0047] Underwater cleaning equipment includes:

[0048] The suction housing 1 has a suction chamber 11 inside;

[0049] The drive component 2 is connected to the suction chamber 11 and is used to drive the suction chamber 11 to form a positive pressure state or a negative pressure state.

[0050] Please refer to the following: Figure 3 Filter assembly 3 is installed on suction housing 1. Filter assembly 3 is provided with filter chamber 31 that communicates with suction chamber 11.

[0051] Suction assembly 4, used to connect filter chamber 31 and the space to be cleaned; and

[0052] The oscillating component 5 connects the suction component 4 and the suction housing 1. The oscillating component 5 is used to drive at least a portion of the suction component 4 to oscillate within the space to be cleaned.

[0053] Here, it can be understood that the suction housing 1 refers to the component used to support the drive assembly 2, the filter assembly 3 and the suction assembly 4, and the suction housing 1 serves the functions of protection and fixation; the suction housing 1 has a hollow structure and the suction chamber 11 is provided inside the suction housing 1.

[0054] The drive assembly 2 is a component used to provide suction power. The drive assembly 2 is connected to the suction chamber 11 and is used to drive the suction chamber 11 to form a positive pressure state or a negative pressure state. The positive pressure state means that the water pressure inside the suction chamber 11 is greater than the water pressure outside the suction chamber 11. When the suction chamber 11 forms a positive pressure state, the water inside the suction chamber 11 is discharged outside the suction chamber 11. The negative pressure state means that the water pressure inside the suction chamber 11 is less than the water pressure outside the suction chamber 11. When the suction chamber 11 forms a negative pressure state, the water outside the suction chamber 11 is drawn into the suction chamber 11.

[0055] The filter assembly 3 refers to an assembly used to filter foreign objects in water. The filter assembly 3 is provided with a filter chamber 31 and a filter hole 32. The filter chamber 31 is formed inside the filter assembly 3, and the filter hole 32 is used to connect the filter chamber 31 and the suction chamber 11. Thus, when the suction chamber 11 is under positive pressure, the water in the suction chamber 11 flows to the filter chamber 31; when the suction chamber 11 is under negative pressure, the water in the filter chamber 31 flows to the suction chamber 11.

[0056] The suction assembly 4 is a component used to connect the filter chamber 31 and the space to be cleaned; wherein, the space to be cleaned refers to the space in the reactor pool of a nuclear power plant where there are foreign objects, and the suction assembly 4 connects the filter chamber 31 and the space to be cleaned.

[0057] The swing component 5 refers to the component used to drive the suction component 4 to swing within the space to be cleaned;

[0058] The working principle of the underwater cleaning device provided in this example is as follows:

[0059] When the drive component 2 operates in the forward direction, it drives the suction chamber 11 and the filter chamber 31 to form a positive pressure state. When the drive component 2 operates in the reverse direction, it drives the suction chamber 11 and the filter chamber 31 to form a negative pressure state.

[0060] The suction assembly 4 is placed into the space to be cleaned, and the drive assembly 2 is activated. The drive assembly 2 drives the suction chamber 11 to form a positive pressure state. At this time, the water inside the suction chamber 11 flows to the filter chamber 31 and is finally sprayed out from the suction assembly 4. In this way, the underwater cleaning device achieves the blowing function. Alternatively, the drive assembly 2 is activated, and the drive assembly 2 drives the suction chamber 11 to form a negative pressure state. At this time, foreign objects in the space to be cleaned are sucked into the suction assembly 4, and after being filtered by the filter chamber 31, the foreign objects are left inside the filter chamber 31. Water flows into the suction chamber 11 through the filter holes 32. In this way, the underwater cleaning device achieves the filtering and cleaning function of foreign objects. In addition, the swing assembly 5 can drive the suction assembly 4 to swing in the space to be cleaned, so that the suction assembly 4 rotates around the axis. The suction port of the suction assembly 4 can move to different parts in the space to be cleaned, thereby increasing the coverage area of ​​the suction assembly 4.

[0061] By adopting the above technical solution, the underwater cleaning device has suction and reverse blowing functions. At the same time, the oscillating component 5 enables the suction component 4 to oscillate within the space to be cleaned, thereby increasing the coverage area of ​​the reactor core components and improving the cleaning capability of the underwater cleaning device.

[0062] like Figure 4 As shown, in one embodiment, the swing assembly 5 includes a swing base 50 disposed on the suction housing 1 and a swing power motor 51 disposed on the swing base 50; the swing power motor 51 is connected to the suction assembly 4 and is used to drive the suction assembly 4 to swing.

[0063] Optionally, the swing assembly 5 also includes a connecting pipe 52 disposed on the swing seat 50, the connecting pipe 52 connecting the suction assembly 4 and the filter chamber 31.

[0064] Here, it can be understood that the swing assembly 5 includes a swing base 50, a swing power motor 51, and a connecting pipe 52. The swing base 50 is disposed on the suction housing 1, the swing power motor 51 is disposed on the swing base 50, and the connecting pipe 52 is disposed on the swing base 50.

[0065] By adopting the above technical solution, the swing component 5 realizes the swing function of the suction component 4 through the swing power motor 51, thereby improving the cleaning coverage of the suction component 4. In one embodiment, the swing component 5 further includes a first gear 53 connected to the power shaft on the swing power motor 51 and a second gear 54 disposed on the suction component 4, the second gear 54 meshing with the first gear 53; the suction component 4 rotates around the axis when the swing power motor 51 drives the first gear 53 and the second gear 54 to rotate.

[0066] By adopting the above technical solution, the transmission structure of the swing component 5 is simple and its reliability is high.

[0067] like Figure 5 As shown, in one example, the drive assembly 2 includes a drive motor 21 and a fan blade 22 that is driven by the drive motor 21. The drive motor 21 is connected to the suction housing 1. The fan blade 22 is disposed in the suction chamber 11. The drive motor 21 is used to drive the fan blade 22 to rotate in the forward or reverse direction in the suction chamber 11. The suction chamber 11 forms a positive pressure state when the fan blade 22 rotates in the forward direction and a negative pressure state when the fan blade 22 rotates in the reverse direction.

[0068] Here, it can be understood that the drive motor 21 refers to the motor that provides the rotation power for the fan blade 22; the fan blade 22 refers to the component that drives the water in the suction chamber 11 to flow in a preset direction, thereby making the suction chamber 11 form a positive pressure state or a negative pressure state; the drive motor 21 is provided on the suction housing 1, and the fan blade 22 is provided in the suction chamber 11. The drive motor 21 drives the fan blade 22 to rotate in the forward or reverse direction in the suction chamber 11; when the fan blade 22 rotates in the forward direction, the suction chamber 11 forms a positive pressure state, and when the fan blade 22 rotates in the reverse direction, the suction chamber 11 forms a negative pressure state.

[0069] By adopting the above technical solution, the drive component 2 has a simple structure and is easy to manufacture.

[0070] like Figure 6 As shown, in one example, the filter assembly 3 includes a filter cover 33 and a filter element 34 disposed inside the filter cover 33. The filter cover 33 is disposed in the suction chamber 11. The cover wall of the filter cover 33 is provided with a filter through hole 331 communicating with the suction chamber 11. The filter element 34 forms a filter chamber 31 and a filter hole 32. The filter hole 32 communicates the filter chamber 31 and the filter through hole 331.

[0071] Here, it can be understood that the filter cover 33 refers to the cover component used to protect the filter element 34; the filter element 34 refers to the component used to filter foreign objects; wherein, the filter cover 33 is disposed in the suction chamber 11, and the cover wall of the filter cover 33 is provided with a filter through hole 331, which connects to the suction chamber 11; the filter element 34 forms a filter chamber 31 and a filter hole 32, which connects to the filter through hole 331.

[0072] It needs to be further explained that the filter element 34 is used to retain foreign objects in the filter chamber 31, while water can be discharged from the filter hole 32, that is, to filter foreign objects in the water, thereby achieving the cleaning function.

[0073] By adopting the above technical solution, the filter assembly 3 is a split design, that is, the filter assembly 3 includes a filter cover 33 and a filter element 34, so that the filter element 34 can be removed from the filter cover 33, which helps to reduce the problem of high radiation intensity caused by the need to remove the entire filter assembly 3 from the water.

[0074] In one example, the filter assembly 3 further includes a detachable connector that detachably connects the filter cover 33 and the filter element 34.

[0075] Here, it can be understood that the detachable connector refers to the component that enables the filter cover 33 and the filter element 34 to be detachably connected. The detachable connector includes an extraction key; the extraction key is used to lock or unlock the filter cover 33 and the filter element 34, so that the two are connected or separated.

[0076] By adopting the above technical solution, the filter cover 33 and the filter element 34 are detachably connected, so that the filter element 34 can be removed and replaced.

[0077] In one example, the filter element 34 is also provided with a viewing window communicating with the filter chamber 31.

[0078] Here, it is understandable that, due to the need for analysis of metallic foreign objects discovered under certain circumstances, such as spectroscopic analysis, and to ensure that the foreign objects do not re-enter underwater equipment and pools, the foreign object collection component, such as filter element 34, is equipped with a viewing window to observe the underwater entry status and to extract it from underwater, so as to ensure that personnel are not exposed to radiation doses while meeting the requirements for foreign object recovery and analysis.

[0079] By adopting the above technical solution, it is easier for staff to observe the filter element 34 and to conduct foreign matter recovery and analysis.

[0080] Please refer to it again. Figure 2In one example, the suction assembly 4 includes a suction tube 41 and a water inlet tube 42 communicating with the suction tube 41. The suction tube 41 is located inside the suction chamber 11 and communicates with the filter chamber 31. The water inlet tube 42 is located outside the suction chamber 11 and is used to suction the space to be cleaned.

[0081] The swing assembly 5 is connected to the water inlet pipe 42 and is used to drive the water inlet pipe 42 to swing within the space to be cleaned.

[0082] Here, it can be understood that the suction pipe 41 refers to the pipe located inside the suction chamber 11, and the suction pipe 41 is used to connect the filter chamber 31; the water inlet pipe 42 refers to the pipe located outside the suction chamber 11, and the water inlet pipe 42 is used to suction the space to be cleaned.

[0083] Specifically, the second gear 54 is disposed on the circumferential surface of the suction pipe body 41, and the connecting pipe 52 connects the water inlet pipe body 42 and the suction pipe body 41.

[0084] The working principle of the underwater cleaning device provided in this example is as follows:

[0085] The water inlet pipe 42 extends into the space to be cleaned, and the drive motor 21 drives the fan blade 22 to rotate. When the fan blade 22 rotates in the forward direction, the water in the suction chamber 11 flows to the filter chamber 31, then to the suction pipe 41, and finally sprays out from the water inlet pipe 42 to achieve the sweeping and blowing cleaning function. When the fan blade 22 rotates in the reverse direction, the water in the space to be cleaned, mixed with foreign objects, is sucked into the water inlet pipe 42, then flows to the suction pipe 41, and then enters the filter chamber 31. The foreign objects in the water are blocked by the filter holes 32 of the filter element 34 and remain in the filter element 34. The filtered water flows to the suction chamber 11 to achieve the foreign object cleaning function.

[0086] By adopting the above technical solution, the suction function of suction component 4 was realized.

[0087] In one example, the end of the suction tube 41 that connects to the water inlet tube 42 is provided with multiple interfaces that can accommodate different water inlet tubes 42.

[0088] Here, it is understandable that the multiple reserved interfaces can accommodate water inlet pipes 42 of different lengths and curvatures, thereby enabling suction at different locations.

[0089] By adopting the above technical solutions, the applicability of underwater cleaning devices has been improved.

[0090] In one example, the suction assembly 4 further includes a swing assembly for adjusting the water inlet angle of the water inlet pipe 42.

[0091] Here, it can be understood that the suction component 4 is also equipped with an underwater wireless oscillation component, thereby realizing underwater angle adjustment; specifically, the oscillation component can be an oscillation motor, which has an oscillation shaft, and the water inlet pipe can be connected to the oscillation shaft and rotate around the oscillation shaft.

[0092] By adopting the above technical solution, the flexibility of adjusting the angle of the water inlet pipe 42 is improved.

[0093] In one example, the suction housing 1 is provided with an outlet 12 that communicates with the suction chamber 11.

[0094] Here, it can be understood that the outlet 12 refers to the opening through which water is discharged from the suction chamber 11. When the suction chamber 11 is under negative pressure, water mixed with foreign matter in the space to be cleaned enters the suction pipe 41 from the inlet pipe 42, then enters the filter chamber 31 from the suction pipe 41, then enters the suction chamber 11, and finally exits from the outlet 12, thus realizing the internal water circulation of the suction chamber 11. In addition, when the suction chamber 11 is under positive pressure, water outside the suction chamber 11 enters the interior of the suction chamber 11 from the outlet 12, then enters the filter chamber 31, then enters the inlet pipe 42 through the suction pipe 41, and finally sprays out from the inlet pipe 42.

[0095] By adopting the above technical solution, water circulation during the underwater suction process was achieved.

[0096] Secondly, a nuclear power plant cleaning device is provided, including a main body of the cleaning device and the aforementioned underwater cleaning device, wherein the underwater cleaning device is connected to the main body of the cleaning device.

[0097] By adopting the above technical solution, in addition to the advantages of the underwater suction device described above, the nuclear power plant cleaning equipment of this example also has the advantage of high cleaning capacity.

[0098] Specifically, the existing equipment has the following characteristics:

[0099] 1. Existing underwater dust collection devices are currently large in size, have a long assembly cycle, and require a crane for transportation;

[0100] 2. Existing equipment should not currently have reverse purging capabilities, nor should it be able to fully cover the cleaning capabilities of reactor core components;

[0101] 3. Due to the complex structure of the internal components of the underwater reactor, traditional salvage equipment cannot meet current needs;

[0102] 4. Due to the current state of the equipment, it does not meet the requirements of on-demand efficiency and underwater extraction of materials, and it is necessary to fully cover the use of the internal components of the reactor. Therefore, it is necessary to redesign an efficient underwater suction and purging tool based on experience.

[0103] The project team specially manufactured a high-efficiency, lightweight underwater suction and purging device that can be quickly assembled and used, and can be operated by a single person. It has made a great contribution to the treatment of defects in the reactor bottom and internal components of nuclear power plants, with good results and saved critical path time during major overhauls.

[0104] Foreign object retrieval in underwater environments such as reactor pools, refueling pools, and spent fuel pools within the reactor coolant system is unpredictable, and underwater equipment has complex structures. Existing weights and filters cannot handle these conditions quickly and safely; they can only handle foreign object retrieval in flat surfaces and vertically open areas; and existing equipment is large and complex to operate. Considering these factors, this tool has the following characteristics:

[0105] 1. The equipment has a simple structure, small size, and light weight, and can be operated by a single person;

[0106] 2. The equipment has both suction and purging functions;

[0107] 3. The equipment has a foreign object collection filter that can be extracted underwater to avoid radiation exposure to personnel;

[0108] 4. The equipment has customized suction and purging components, which can cover the replica location of underwater stack components (without surface flatness and angle constraints).

[0109] 5. The equipment has remote operation capabilities, allowing for operation without on-site intervention;

[0110] In addition, the main body of the device adopts a turbine negative pressure design, which uses water suction and jet to transfer underwater foreign objects;

[0111] The turbine can change its rotational speed by varying the magnitude of the electric current, thereby altering the suction and injection force and enabling the transfer of foreign objects of different masses under different environments.

[0112] First, connect the underwater buoyancy cable and the main motor assembly. Select the appropriate suction component 4 according to the usage location. Directly connect and place the suction component 4 underwater. One person can carry the suction component 4 by hand. Send the nozzle of the suction component 4 to the location where suction and blowing are required. With the help of the underwater TV, remotely switch and adjust the drive component 2 to complete the suction and blowing operation. Raise the underwater cleaning device to the preset height below the water surface. Then, use the extraction key of the foreign object collection component to extract the filter element 34 underwater.

[0113] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An underwater cleaning device, characterized in that, The application relates to a cleaning device, which comprises: a suction shell, which is internally provided with a suction chamber; a driving assembly, which is communicated with the suction chamber and is used for driving the suction chamber to form a positive pressure state or a negative pressure state; a filtering assembly, which is installed on the suction shell and is provided with a filtering chamber communicated with the suction chamber; a suction assembly, which is used for communicating the filtering chamber with a space to be cleaned; and a swinging assembly, which is connected with the suction assembly and the suction shell and is used for driving at least part of the suction assembly to swing in the space to be cleaned. The swinging assembly comprises a swinging seat arranged on the suction shell and a swinging power motor arranged on the swinging seat; the swinging power motor is connected with the suction assembly and is used for driving the suction assembly to swing.

2. The underwater cleaning device of claim 1, wherein, The swinging assembly further comprises a first gear connected with a power shaft of the swinging power motor and a second gear arranged on the suction assembly; the second gear is engaged with the first gear; the suction assembly rotates around an axis when the first gear and the second gear are driven to rotate by the swinging power motor.

3. The underwater cleaning device of claim 2, wherein, The driving assembly comprises a driving motor and a fan blade in transmission connection with the driving motor; the driving motor is connected with the suction shell; the fan blade is arranged in the suction chamber; the driving motor is used for driving the fan blade to rotate forward or reversely in the suction chamber; the suction chamber forms a positive pressure state when the fan blade rotates forward; the suction chamber forms a negative pressure state when the fan blade rotates reversely.

4. The underwater cleaning device of claim 1, wherein, The filtering assembly comprises a filtering cover and a filtering core arranged in the filtering cover; the filtering cover is arranged in the suction chamber; a filtering through hole, which is communicated with the suction chamber, is arranged on a cover wall of the filtering cover; the filtering core is formed with the filtering chamber and a filtering hole; the filtering hole is communicated with the filtering chamber and the filtering through hole.

5. The underwater cleaning device of claim 1, wherein, The filtering assembly further comprises a detachable connecting piece which detachably connects the filtering cover and the filtering core.

6. The underwater cleaning device of claim 5, wherein, The filtering core is further provided with a visual window communicated with the filtering chamber. The suction assembly comprises a suction pipe and a water inlet pipe communicated with the suction pipe; the suction pipe is arranged in the suction chamber and is communicated with the filtering chamber; the water inlet pipe is arranged outside the suction chamber and is used for sucking the space to be cleaned; 7. An underwater cleaning device as claimed in any one of claims 1 to 6, characterized in that The swinging assembly is connected with the water inlet pipe and is used for driving the water inlet pipe to swing in the space to be cleaned. An end of the suction pipe, which is connected with the water inlet pipe, is provided with a plurality of interfaces which can adapt to different water inlet pipes.

8. An underwater cleaning device as claimed in claim 7, characterized in that A water outlet, which is communicated with the suction chamber, is arranged on the suction shell.

9. An underwater cleaning device as claimed in any one of claims 1 to 6, characterized in that The application further relates to a cleaning device, which comprises a cleaning device main body and the underwater cleaning device according to any one of claims 1 to 9; the underwater cleaning device is connected with the cleaning device main body.

10. A nuclear power plant cleaning apparatus, characterized by, ​

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