Underwater foreign matter suction tool for nuclear power unit

Abstract

The utility model relates to an underwater foreign matter suction tool for a nuclear power unit. Due to the arrangement of a reversing pipe, it is ensured that foreign matter is guided into a filtering device which is not in the same straight line with an outer guide pipe. In this way, even under power failure or other unforeseen circumstances, the foreign matter cannot return along the original path, so that secondary foreign matter is avoided, and safety risks are remarkably reduced. The size and the weight of the underwater foreign matter suction tool for the nuclear power unit are optimized, so that the underwater foreign matter suction tool is more flexible to operate underwater. In addition, due to the design of the reversing pipe, the tool can efficiently work in a narrow space, and operation convenience and flexibility are improved.

Description

Technical Field

[0001] The utility model relates to the field of nuclear power tools, in particular to an underwater foreign matter suction tool for a nuclear power unit. Background Art

[0002] During nuclear power plant operation and maintenance, parts often become loose and fall into the core pool, component pool, and spent fuel pool during refueling overhauls due to improper operation or poorly designed tools or equipment. For safety reasons, these loose parts (or other foreign matter) must be removed from the core pool. However, due to radioactive contamination, they can only be removed using specialized tools.

[0003] In the related art, foreign matter is generally removed by vacuum suction, which mainly adopts a vacuum pump direct suction method. However, the existing vacuum suction tools usually have the following shortcomings in actual use:

[0004] First, there is a lack of a separate filter element for temporarily storing foreign matter. Under the action of the vacuum pump, foreign matter can only be sucked under the filter. Once the external power supply is interrupted, the foreign matter will fall from the straw and form secondary foreign matter. The secondary foreign matter will cause greater harm due to the uncertainty of the falling position.

[0005] Secondly, the suction devices commonly used in related technologies are often large in size and weight, resulting in low convenience in use. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an underwater foreign body suction tool for a nuclear power unit, which can solve the problem of secondary foreign bodies being easily generated during the picking process and the problem of low convenience of use.

[0007] The utility model provides an underwater foreign body suction tool for a nuclear power unit, which comprises:

[0008] a housing, wherein a filter element cavity is provided in the housing;

[0009] A filter device, the filter device being disposed in the filter element cavity;

[0010] a guide device, the guide device comprising an outer conduit and a reversing tube, the outer conduit being provided on the housing, one end of the reversing tube being connected to the outer conduit, and the other end of the reversing tube being connected to an end of the filter element cavity away from the outer conduit, wherein the central axes of the two ends of the reversing tube do not overlap; and

[0011] A pumping device includes a motor and a pump blade, wherein the motor is arranged on the housing, the pump blade is arranged in the housing, and the motor is driven and connected to the pump blade.

[0012] Preferably, the underwater foreign matter suction tool of the nuclear power unit also includes a filter element seat, which is arranged in the shell, and a mounting groove is provided on the filter element seat. A water inlet hole is provided at the bottom of the mounting groove, and the water inlet hole is connected to the reversing pipe. The mounting groove defines the filter element cavity.

[0013] Preferably, the filtering device comprises a filter cartridge, and the filter cartridge is provided with an open end and a closed end, the open end is abutted against the bottom of the filter cartridge cavity, and the closed end is exposed at the bottom of the filter cartridge seat.

[0014] Preferably, a plurality of water holes are provided on the peripheral side wall of the filter element cavity.

[0015] Preferably, the reversing tube is U-shaped.

[0016] Preferably, the pumping device further comprises a pump casing, which is arranged on the end of the housing away from the guide device, a pump outlet hole is opened on the pump casing, the motor is arranged on the pump casing, and the pump blades are located in the pump casing.

[0017] Preferably, the outer catheter comprises a rigid catheter; or

[0018] The outer conduit includes a bellows.

[0019] Preferably, the underwater foreign matter suction tool of the nuclear power unit also includes a locking device, which includes a locking rod, a reset member and a locking block. The locking rod is slidably arranged on the shell, and the locking rod can rotate relative to the shell. The reset member is driven and connected to the locking rod. One end of the locking rod is exposed at one end of the shell, and the other end of the locking rod is connected to the locking block. The locking block can be removably held against the filter element.

[0020] Preferably, the underwater foreign matter suction tool of the nuclear power unit further includes a safety valve, and the safety valve is provided on the shell.

[0021] Preferably, the underwater foreign matter suction tool for a nuclear power unit further comprises an operating rod, and a mounting hole is provided at the end of the shell away from the reversing tube, and the end of the operating rod is screwed to the mounting hole.

[0022] The implementation of this utility model has the following beneficial effects:

[0023] The utility model relates to an underwater foreign matter extraction tool for nuclear power plants. The provision of a reversing tube ensures that foreign matter is directed into a filter device that is not aligned with the outer conduit. This prevents foreign matter from returning along its original path, even in the event of a power outage or other unexpected situation. This prevents the generation of secondary foreign matter and significantly reduces safety risks. The size and weight of the underwater foreign matter extraction tool for nuclear power plants of the utility model have been optimized, making it more flexible to operate underwater. Furthermore, the design of the reversing tube enables the tool to operate efficiently in confined spaces, improving operational convenience and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0025] Figure 1 Schematic diagram of the structure of an underwater foreign body suction tool for a nuclear power unit in some embodiments of the present invention;

[0026] Figure 2 Schematic diagram of the structure of an underwater foreign body suction tool for a nuclear power unit in some embodiments of the present invention;

[0027] Figure 3 This is an exploded view of an underwater foreign matter suction tool for a nuclear power unit in some embodiments of the present invention;

[0028] Figure 4 From another perspective Figure 3 An exploded view of the underwater foreign matter suction tool for a nuclear power unit is shown;

[0029] Figure 5 It is a cross-sectional view of an underwater foreign matter suction tool for a nuclear power unit in some embodiments of the present invention. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present invention, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0031] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] Figure 1 and Figure 2 An underwater foreign matter suction tool 10 for a nuclear power plant in some embodiments of the present invention is shown. The underwater foreign matter suction tool 10 for a nuclear power plant is used to absorb and remove foreign matter in an underwater environment in a nuclear power scene.

[0035] like Figures 1 to 5 As shown, the underwater foreign matter suction tool 10 of a nuclear power unit includes a shell 1, a filter device 2, a guide device 3 and a pumping device 4, and the filter device 2, the guide device 3 and the pumping device 4 are respectively arranged on the shell 1.

[0036] As can be understood, the housing 1 serves to contain and protect the fluid. The filter device 2 is used to filter the fluid entering the housing 1. The guide device 3 is used to guide the fluid into the housing 1. The pumping device 4 is used to drive the fluid to flow.

[0037] like Figures 1 to 5As shown, a filter core cavity 11 is provided in the housing 1. It can be understood that the filter core cavity 11 is used to accommodate the filter device 2. The filter device 2 is provided in the filter core cavity 11, and the filter device 2 is used to intercept and store the inhaled foreign matter.

[0038] The guiding device 3 includes an outer conduit 31 and a reversing tube 32. The outer conduit 31 is arranged on the shell 1. One end of the reversing tube 32 is connected to the outer conduit 31, and the other end of the reversing tube 32 is connected to the end of the filter element cavity 11 away from the outer conduit 31. The central axes of the two ends of the reversing tube 32 do not overlap with each other.

[0039] As can be understood, outer conduit 31 is fixed to housing 1 and serves as an inlet for foreign matter to enter the tool. One end of reversing tube 32 is connected to outer conduit 31, while the other end is connected to the end of filter element cavity 11 away from outer conduit 31. The central axes of reversing tube 32 at both ends do not overlap. This design ensures that foreign matter will not return directly along the original path during the suction process, effectively preventing the generation of secondary foreign matter even if the external power supply is interrupted.

[0040] It should be noted that, as shown in FIG*, the straight line L1 is the central axis of one end of the reversing tube 32, and the straight line L2 is the central axis of the other end of the reversing tube 32. L1 and L2 do not overlap with each other and are staggered in the straight line position, which can prevent foreign matter from sliding directly along the straight line and forming secondary foreign matter. Figures 3 to 5 As shown, the pumping device 4 includes a motor 41 and a pump blade 42 . The motor 41 is disposed on the housing 1 , and the pump blade 42 is disposed in the housing 1 . The motor 41 is driven and connected to the pump blade 42 .

[0041] It can be understood that when the motor 41 is started, the pump blades 42 rotate to generate negative pressure, thereby introducing foreign matter in the water into the filter device 2 in the filter element cavity 11 through the outer conduit 31 and the reversing tube 32, wherein the flow of the fluid will drive the foreign matter to move and filter the foreign matter into the filter device 2.

[0042] During use, the tool is moved to the corresponding underwater operation area through a suitable connecting device (such as a rope, a rod, etc.) for adsorption operation. Start the motor 41, the pump blade 42 starts to rotate, and suction is generated. Foreign matter enters the interior of the shell 1 through the outer conduit 31 under the carry of the fluid, and then is guided by the reversing tube 32 and finally intercepted and stored by the filter device 2. During use, even if a sudden power outage occurs, due to the special design of the reversing tube 32, the foreign matter will not return along the original route (will not escape from the filter device 2 and escape along the guide device 3), thereby avoiding the generation of secondary foreign matter.

[0043] It should be noted that the entire tool is of moderate size, making it easy to carry and operate. The filter device 2 can effectively intercept foreign matter of various sizes. When targeted filtration of foreign matter is required, the filter pores of the filter device 2 can be configured to the corresponding size. The design of the reversing tube 32 ensures that the generation of secondary foreign matter is prevented even in the event of an unexpected power outage.

[0044] like Figures 2 to 5 As shown, in some embodiments of the underwater foreign matter suction tool 10 of a nuclear power unit, the underwater foreign matter suction tool 10 of a nuclear power unit further includes a filter element seat 5, which is arranged in the shell 1, and a mounting groove 51 is provided on the filter element seat 5, and a water inlet hole 52 is provided at the bottom of the mounting groove 51, and the water inlet hole 52 is connected to the reversing tube 32, and the mounting groove 51 defines the filter element cavity 11.

[0045] It can be understood that the arrangement of the mounting groove 51 and the water inlet hole 52 of the filter element holder 5 ensures that foreign matter can smoothly enter the filter element cavity 11. The filter element holder 5 and the housing 1 together define a cavity, into which the fluid, after being filtered by the filter device 2, flows and is further discharged to the outside of the housing 1 through the cavity.

[0046] Furthermore, the filter element seat 5 and the reversing tube 32 can be configured to be integrally formed together.

[0047] like Figures 3 to 5 As shown, in some embodiments of the underwater foreign matter suction tool 10 of a nuclear power unit, the filtering device 2 includes a filter cartridge 21, which is provided with an open end 211 and a closed end 212. The open end 211 is abutted against the bottom of the filter cartridge cavity 11, and the closed end 212 is exposed at the bottom of the filter cartridge seat 5.

[0048] As can be understood, the filter cartridge 21 is generally cylindrical in shape. Foreign matter, along with the fluid, enters the filter cartridge 21 through the open end 211, where it is filtered, intercepted, and temporarily stored within the filter cartridge 21. The open end 211 abuts against the bottom of the filter cartridge cavity 11, preventing the foreign matter from escaping through the clearance between the open end 211 and the bottom wall of the filter cartridge cavity 11.

[0049] like Figures 3 to 5 As shown, in some embodiments of the underwater foreign matter suction tool 10 for a nuclear power unit, a plurality of water holes 12 are opened on the peripheral side wall of the filter element cavity 11 .

[0050] It can be understood that the water hole 12 is provided to allow water to flow smoothly through the filter element cavity 11 while ensuring that foreign matter is effectively intercepted in the filter element barrel 21.

[0051] Furthermore, the number of the water holes 12 can be flexibly set. Preferably, the water holes are configured to be evenly distributed along the circumference of the side wall of the filter element cavity 11, so that the fluid can be quickly discharged from the filter element cavity 11, thereby improving the foreign matter adsorption efficiency of the utility model.

[0052] like Figures 3 to 5 As shown, in some embodiments of the underwater foreign matter suction tool 10 for a nuclear power plant, the reversing tube 32 is U-shaped.

[0053] It is understandable that the U-shaped shape can guide the flow direction of the fluid to be adjusted by 180 degrees. In this way, the U-shaped shape can more effectively prevent the reverse movement of foreign matter, so that the foreign matter can be firmly retained in the filter element cavity 11.

[0054] like Figures 2 to 5 As shown, in some embodiments of the underwater foreign matter suction tool 10 of a nuclear power unit, the pumping device 4 also includes a pump casing 43, which is arranged on the end of the casing 1 away from the guide device 3, and a pump outlet hole 431 is opened on the pump casing 43, the motor 41 is arranged on the pump casing 43, and the pump blades 42 are located in the pump casing 43.

[0055] As can be understood, the pump housing 43 is provided on the end of the housing 1 away from the guide device 3, for mounting the motor 41 and accommodating the pump blades 42. The pump housing 43 is provided with a pump outlet 431 for discharging the filtered water, ensuring that the water can be discharged smoothly from the tool without affecting the suction force.

[0056] It should be noted that the design of the pump housing 43 helps improve the efficiency of the pumping device 4, ensuring that the suction force generated by the pump blades 42 can effectively draw in foreign matter and guide it to the filter element cavity 11 through the guide device 3. The design of the pump outlet 431 helps improve the circulation of water, ensuring that the filtered water can be discharged smoothly, avoiding water stagnation inside the tool, and thus improving filtration efficiency.

[0057] like Figures 1 to 5 As shown, the outer conduit 31 can be configured to include a rigid conduit in some embodiments. It is understood that a rigid conduit can be used in underwater operating environments with fewer obstacles. For example, during underwater operations, if the operating area is not expected to change significantly or a certain rigidity is required to support the conduit, a rigid conduit is more suitable.

[0058] The outer conduit 31 comprises a bellows. It is understood that the bellows has good flexibility and elasticity, which is suitable for operating environments requiring high flexibility and adaptability, such as when operating underwater, if it is expected to need to bypass obstacles or adapt to foreign objects of different shapes, then the bellows are more suitable for use.

[0059] like Figures 2 to 5As shown, in some embodiments of the underwater foreign matter suction tool 10 of a nuclear power plant, the underwater foreign matter suction tool 10 of a nuclear power plant further includes a locking device 6, which includes a locking rod 61, a reset member 62 and a locking block 63. The locking rod 61 is slidably arranged on the shell 1, and the locking rod 61 can rotate relative to the shell 1. The reset member 62 is driven and connected to the locking rod 61. One end of the locking rod 61 is exposed at one end of the shell 1, and the other end of the locking rod 61 is connected to the locking block 63. The locking block 63 can be removably held against the filter element.

[0060] As can be understood, the locking rod 61 is used to drive the locking block 63 to move. The reset member 62 is used to provide a force to automatically reset the locking rod 61 to its initial position. The locking block 63 is connected to one end of the locking rod 61 and can abut against the filter element to fix the position of the filter cartridge 21 in the filter element cavity 11.

[0061] It should be noted that the filter cartridge 21 can be quickly locked or unlocked by the locking rod 61, thereby improving the convenience of using the tool.

[0062] like Figure 2 As shown, in some embodiments of the underwater foreign matter suction tool 10 for a nuclear power plant, the underwater foreign matter suction tool 10 for a nuclear power plant further includes a safety valve 7 , which is disposed on the shell 1 .

[0063] It should be noted that the safety valve 7 is provided on the housing 1 and is used to open when the pressure inside the housing 1 is too high to discharge the fluid inside the housing 1 to relieve the pressure, thereby ensuring that the safety threshold is not exceeded during use.

[0064] like Figure 4 As shown, in some embodiments of the underwater foreign matter suction tool 10 for a nuclear power plant, the underwater foreign matter suction tool 10 for a nuclear power plant further includes an operating rod 8, and a mounting hole 13 is provided at the end of the shell 1 away from the reversing tube 32, and the end of the operating rod 8 is screwed to the mounting hole.

[0065] As can be understood, operating lever 8 is disposed at the end of housing 1 and is screwed into a mounting hole on housing 1 to control the direction and position of underwater foreign matter extraction tool 10 for a nuclear power unit underwater. The provision of operating lever 8 allows the user to easily control the direction and position of the tool by pushing or pulling operating lever 8, thereby improving the convenience and flexibility of underwater tool operation.

[0066] The implementation of this utility model has the following beneficial effects:

[0067] The utility model relates to an underwater foreign matter extraction tool for nuclear power plants. The provision of a reversing tube ensures that foreign matter is directed into a filter device that is not aligned with the outer conduit. This prevents foreign matter from returning along its original path, even in the event of a power outage or other unexpected situation. This prevents the generation of secondary foreign matter and significantly reduces safety risks. The size and weight of the underwater foreign matter extraction tool for nuclear power plants of the utility model have been optimized, making it more flexible to operate underwater. Furthermore, the design of the reversing tube enables the tool to operate efficiently in confined spaces, improving operational convenience and flexibility.

[0068] The scheme of the present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphases. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required for the present invention. In addition, it can be understood that the steps in the method of the embodiment of the present invention can be adjusted in sequence, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present invention can be merged, divided and deleted according to actual needs.

[0069] While various embodiments of the present invention have been described above, the above descriptions are illustrative and non-exhaustive, and are not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A nuclear power unit underwater foreign body suction tool, characterized in that: include: a housing, wherein a filter element cavity is provided in the housing; A filter device, the filter device being disposed in the filter element cavity; a guide device, the guide device comprising an outer conduit and a reversing tube, the outer conduit being disposed on the housing, one end of the reversing tube being connected to the outer conduit, and the other end of the reversing tube being connected to an end of the filter element cavity away from the outer conduit, wherein the central axes of the two ends of the reversing tube do not overlap; and A pumping device includes a motor and a pump blade, wherein the motor is arranged on the housing, the pump blade is arranged in the housing, and the motor is driven and connected to the pump blade.

2. The underwater foreign matter suction tool for a nuclear power plant according to claim 1, characterized in that: The underwater foreign body suction tool of the nuclear power unit also includes a filter element seat, which is arranged in the shell. A mounting groove is provided on the filter element seat, and a water inlet hole is provided at the bottom of the mounting groove. The water inlet hole is connected to the reversing pipe, and the mounting groove defines the filter element cavity.

3. The underwater foreign matter suction tool for a nuclear power plant according to claim 2, characterized in that: The filter device includes a filter cartridge. The filter cartridge is provided with an open end and a closed end. The open end is abutted against the bottom of the filter cartridge cavity, and the closed end is exposed at the bottom of the filter cartridge seat.

4. The underwater foreign matter suction tool for a nuclear power plant according to any one of claims 1 to 3, characterized in that: A plurality of water holes are provided on the peripheral side wall of the filter core cavity.

5. The underwater foreign matter suction tool for a nuclear power plant according to claim 1, characterized in that: The reversing tube is U-shaped.

6. The underwater foreign matter suction tool for a nuclear power plant according to claim 1, characterized in that: The pumping device further comprises a pump casing, which is arranged on the end of the housing away from the guide device, and a pump outlet hole is opened on the pump casing. The motor is arranged on the pump casing, and the pump blades are located in the pump casing.

7. The underwater foreign matter suction tool for a nuclear power plant according to claim 1, characterized in that: The outer catheter comprises a rigid catheter; or The outer conduit includes a bellows.

8. The underwater foreign matter suction tool for a nuclear power plant according to claim 1, characterized in that: The underwater foreign body suction tool of the nuclear power unit also includes a locking device, which includes a locking rod, a reset member and a locking block. The locking rod is slidably arranged on the shell, and the locking rod can rotate relative to the shell. The reset member is driven and connected to the locking rod. One end of the locking rod is exposed at one end of the shell, and the other end of the locking rod is connected to the locking block. The locking block can be removably pressed against the filter element.

9. The underwater foreign matter suction tool for a nuclear power plant according to claim 1, characterized in that: The underwater foreign matter suction tool for a nuclear power unit further includes a safety valve, which is arranged on the shell.

10. The underwater foreign matter suction tool for a nuclear power plant according to claim 1, characterized in that: The underwater foreign matter suction tool for a nuclear power unit further comprises an operating rod. The shell is provided with a mounting hole at the end away from the reversing tube, and the end of the operating rod is screwed to the mounting hole.

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