Convenient retracting and releasing device for marine organism intercepting net bag for nuclear power station

Abstract

The utility model discloses a marine organism intercepting net bag convenient retracting and releasing device for a nuclear power station. The marine organism intercepting net bag convenient retracting and releasing device comprises an electric torque wrench, a fixed sleeve and a counter-acting force arm. A torque output connector of the electric torque wrench is connected with a speed reducer input shaft of the winding shaft through a fixing sleeve, a fluted disc is arranged on the torque output connector of the electric torque wrench, the counter-acting force arm comprises a connecting plate, the connecting plate is provided with a first end and a second end in the length direction, and the first end of the connecting plate is provided with a first sleeve. Connecting teeth meshed with the fluted disc are arranged in an inner cavity of the first sleeve, and a second sleeve connected with the flange plate is arranged at the second end of the connecting plate. According to the device, the torque output connector can be controlled through the electric torque wrench to drive the winding shaft to wind or unwind the net through the fixing sleeve, mechanical winding and unwinding of the disc net under the tide level and different marine organism interception working conditions can be achieved, the personal safety risk can be reduced, the working efficiency can be improved, and the device is convenient to use and has wide application prospects.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant tools technology, and in particular to a convenient device for deploying and retrieving marine organism interception nets for nuclear power plants. Background Technology

[0002] Nuclear power plants use seawater as a cold source to provide cooling water for steam turbines and nuclear island equipment. In recent years, with changes in the marine environment, nuclear power plant shutdowns caused by marine organisms or marine debris have occurred frequently. To ensure the safety of the cold source system, nuclear power plants have successively installed interception nets in their intake channels, relying on the large flow area of ​​the nets to achieve pre-filtration of circulating water. However, existing interception nets still have the following shortcomings when being deployed:

[0003] The original nets were all wound manually. The nets weighed more than 1 ton when wet. When manually winding and unwinding the nets, it was quite strenuous for a single person. In bad weather or when winding the nets continuously, there were personal safety hazards, and the performance was not ideal. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a convenient device for loading and unloading marine organism interception nets for nuclear power plants, so as to solve the problems of time-consuming and labor-intensive manual net loading and the problem of personal safety.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a convenient loading and unloading device for a marine organism interception net for nuclear power plants, including an electric torque wrench, a fixing sleeve and a reaction arm;

[0006] The torque output connector of the electric torque wrench is connected to the reducer input shaft of the take-up shaft through the fixed sleeve. The torque output connector of the electric torque wrench is provided with a gear plate. The reaction arm includes a connecting plate. The connecting plate has a first end and a second end in the length direction. The first end of the connecting plate is provided with a first sleeve. The inner cavity of the first sleeve is provided with connecting teeth that mesh with the gear plate. The second end of the connecting plate is provided with a second sleeve that connects to the flange.

[0007] In some embodiments, the end of the torque output connector has a square columnar structure, and the fixing sleeve includes a cylindrical body with a square columnar connecting groove.

[0008] In some embodiments, the fixing sleeve is an integral structure.

[0009] In some embodiments, the fixing sleeve is a metal component.

[0010] In some embodiments, the two axial sides of the first sleeve are flush with the two sides of the connecting plate.

[0011] In some embodiments, the first sleeve is cylindrical.

[0012] In some embodiments, the second sleeve is cylindrical.

[0013] In some embodiments, the reaction arm is an integral structure.

[0014] In some embodiments, the reaction arm is a metal component.

[0015] In some embodiments, the handle of the electric torque wrench is textured.

[0016] The present invention has the following advantages: the convenient loading and unloading device for marine organism interception nets used in nuclear power plants can control the torque output joint through an electric torque wrench to drive the winding shaft to load or unload the net via a fixed sleeve. It can realize the mechanized loading and unloading of the net under different tide levels and marine organism interception conditions, which can reduce personal safety risks and improve work efficiency. The convenient loading and unloading device for marine organism interception nets used in nuclear power plants is portable and has broad application prospects. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of the winding shaft;

[0019] Figure 2 This is one of the structural schematic diagrams of a convenient loading and unloading device (omitting the fixing sleeve) for marine organism interception nets used in nuclear power plants in some embodiments of this utility model;

[0020] Figure 3 This is the second schematic diagram of the convenient loading and unloading device (omitting the fixing sleeve) for marine organism interception nets used in nuclear power plants in some embodiments of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the fixing sleeve in some embodiments of this utility model;

[0022] Figure 5 This is a schematic diagram of the reaction arm in some embodiments of this utility model. Detailed Implementation

[0023] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0024] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0026] like Figure 1 As shown, the reel 100 is used for winding the rope that connects to the marine organism interception net for nuclear power plants. By winding and unwinding the rope, the marine organism interception net for nuclear power plants can be deployed and unwinded.

[0027] See Figures 2 to 5 This utility model discloses a convenient loading and unloading device for marine organism interception nets used in nuclear power plants, including an electric torque wrench 10, a fixing sleeve 20, and a reaction arm 30.

[0028] The torque output connector 14 of the electric torque wrench 10 is connected to the reducer input shaft 200 of the take-up shaft 100 via the fixed sleeve 20. The torque output connector 14 of the electric torque wrench 10 is provided with a gear 15. The reaction arm 30 includes a connecting plate 31, which has a first end and a second end in the length direction. The first end of the connecting plate 31 is provided with a first sleeve 32, and the inner cavity of the first sleeve 32 is provided with connecting teeth 321 that mesh with the gear 15. The second end of the connecting plate 31 is provided with a second sleeve 33 that connects to the flange.

[0029] In some embodiments, the electric torque wrench 10 includes a motor housing 11, with a handle 12 at the bottom of the motor housing 11. A motor is housed inside the motor housing 11; the motor may be, but is not limited to, a servo motor, which offers high precision and forward / reverse rotation. A gearbox 13 is located at one end of the motor housing 11, and a planetary gear reducer, which is connected to the output of the motor, is located inside the gearbox 13. A torque output connector 14 may be located at one end of the gearbox 13, with a gear plate 15 near the gearbox 13. A display screen 16 is located at the other end of the motor housing 11.

[0030] The torque output connector 14 can be connected to a planetary gear reducer. Both the motor and the planetary gear reducer can be selected from existing technologies. Furthermore, the motor housing 11 and the gearbox 13 are connected by a flange 17, and an indexing pin 18 is provided on the top of the flange 17.

[0031] The top side of the handle 12 is provided with a switch button 19 and a reversing switch 110 located above the switch button 19. The switch button 19 and the reversing switch 110 are connected to the motor. The motor can be started by the switch button 19 and the forward and reverse rotation of the motor can be controlled by the reversing switch 110.

[0032] The handle of the electric torque wrench 10 has a textured surface to improve grip stability. A battery pack 111 is detachably connected to the bottom of the handle 12. The battery pack 111 is connected to the motor, the display screen 16, and the switch button 19. The battery pack 111 is used to power the motor, the display screen 16, and the switch button 19. The battery pack 111 can be snapped into the bottom of the handle 12 with a spring-loaded latch for easy disassembly and replacement.

[0033] The motor housing 11 has a rear end cover 112 at the end furthest from the gearbox 13. A display screen 16 is mounted on the rear end cover 112. A button assembly 113 is located below the display screen 16 on one side of the rear end cover 112. Both the display screen 16 and the button assembly 113 are connected to the motor. The button assembly 113 may include multiple buttons for adjusting the motor's torque and speed. Furthermore, a status indicator light 114 is located above the display screen 16 on one side of the rear end cover 112.

[0034] Of course, the electric torque wrench 10 can also be any existing electric torque wrench; no specific limitation is made here.

[0035] In some embodiments, the torque output connector of the electric torque wrench 10 is provided with a gear 15, which may be a splined gear 15.

[0036] In some embodiments, the end of the torque output connector has a square columnar structure, and the fixing sleeve 20 includes a cylindrical body 21 with a square columnar connecting groove 22. The fixing sleeve 20 is an integral structure. The fixing sleeve 20 is a metal part; for example, it can be made of stainless steel, such as 316L stainless steel. The fixing sleeve 20 can also be made of other high-strength alloy steel materials, as long as the working performance and mechanical requirements are met.

[0037] In some embodiments, the reaction arm 30 serves to fix the electric torque wrench 10. Specifically, the second sleeve 33 of the reaction arm 30 is axially fixed to the flange, which is located near the take-up shaft. The reaction arm 30 keeps the electric torque wrench 10 radially fixed and stable during operation, increasing torque transmission efficiency, reducing the user's labor intensity, improving work efficiency, and ensuring user safety.

[0038] In some embodiments, the two axial sides of the first sleeve 32 are flush with the two sides of the connecting plate 31, making the structure of the reaction arm 30 relatively simple.

[0039] In some embodiments, the first sleeve 32 is cylindrical. In some embodiments, the second sleeve 33 is cylindrical. In some embodiments, the reaction arm 30 is an integral structure. In some embodiments, the reaction arm 30 is a metal part, for example, the reaction arm 30 may be made of stainless steel, such as 316L stainless steel. The reaction arm 30 may also be made of other high-strength alloy steel materials, as long as the working performance and mechanical requirements are guaranteed.

[0040] In some embodiments, the convenient storage and retrieval device for the marine organism interception net used in nuclear power plants may further include a storage box for storing the electric torque wrench 10, the fixing sleeve 20, and the reaction arm 30.

[0041] The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants can control the torque output connector 14 via the electric torque wrench 10 to drive the winding shaft through the fixed sleeve 20 for net deployment or retrieval. It can realize mechanized deployment and retrieval of nets under different tide levels and marine organism interception conditions, which can reduce personal safety risks and improve work efficiency. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants is portable and has broad application prospects.

[0042] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A convenient deployment and retrieval device for a marine organism interception net used in nuclear power plants, characterized in that, It includes an electric torque wrench (10), a fixed socket (20), and a reaction arm (30); The torque output connector (14) of the electric torque wrench (10) is connected to the reducer input shaft of the winding shaft through the fixed sleeve (20). The torque output connector (14) of the electric torque wrench (10) is provided with a toothed disc. The reaction arm (30) includes a connecting plate (31). The connecting plate (31) has a first end and a second end in the length direction. The first end of the connecting plate (31) is provided with a first sleeve (32). The inner cavity of the first sleeve (32) is provided with connecting teeth (321) that mesh with the toothed disc. The second end of the connecting plate (31) is provided with a second sleeve (33) that connects to the flange.

2. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 1, characterized in that, The end of the torque output connector (14) has a square columnar structure, and the fixed sleeve (20) includes a cylindrical body (21) with a square columnar connecting groove (22).

3. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 1, characterized in that, The fixed sleeve (20) is an integral structure.

4. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 1, characterized in that, The fixing sleeve (20) is a metal part.

5. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 1, characterized in that, The two axial sides of the first sleeve (32) are flush with the two sides of the connecting plate (31).

6. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 5, characterized in that, The first sleeve (32) is cylindrical.

7. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 1, characterized in that, The second sleeve (33) is cylindrical.

8. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 1, characterized in that, The reaction arm (30) is an integral structure.

9. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 1, characterized in that, The reaction arm (30) is a metal part.

10. The convenient deployment and retrieval device for marine organism interception nets used in nuclear power plants according to claim 1, characterized in that, The handle of the electric torque wrench (10) is textured.

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