A marine organism cleaning device for marine gate slots in nuclear power plants

Abstract

This utility model discloses a marine organism cleaning device for marine gate slots in nuclear power plants, including a winch and a cleaning frame. The winch includes a drum, a synchronous motor, and a steel wire rope. The drum is rotated by the synchronous motor, and the steel wire rope is wound on the drum. The cleaning frame is connected to the free end of the steel wire rope and can be moved up and down by the winch. A shovel blade and a pneumatic floating grinding disc are installed on the side of the cleaning frame. The shovel blade is a downward-sloping blade with a beveled working end. The pneumatic floating grinding disc is located above the shovel blade, and its grinding surface is on the same side as the working end of the shovel blade below it. This device is flexible to install and dismantle, convenient to construct, and does not affect the gate slot structure or system operation. It avoids the risk of personal injury such as diving operations that would result from direct cleaning work by personnel, reduces construction time, and effectively improves the efficiency of marine organism cleaning in marine gate slots of in-service nuclear power plants.

Description

Technical Field

[0001] This utility model relates to the technical field of special equipment for nuclear power plants, specifically to a device for cleaning marine organisms in the marine engineering gate trough of a nuclear power plant. Background Technology

[0002] Currently, all nuclear power plants in China are built in coastal areas, relying on seawater as the circulating cooling medium. During major overhauls of nuclear power plants, the circulating cooling water system needs to be isolated. The first step in seawater isolation is for divers to remove marine shellfish attached to both sides of the gates. After the gates are closed and the seawater isolation is completed, all gate slots must be thoroughly cleaned. Currently, gate slot cleaning is generally done manually using scaffolding or lifting equipment in conjunction with a hoist cage. This method is not only inefficient but also a high-risk operation. Utility Model Content

[0003] The purpose of this invention is to provide a device for cleaning marine organisms in the marine gate trench of a nuclear power plant, which can replace manual labor, reduce construction safety risks, and improve work efficiency.

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

[0005] This application provides a marine organism cleaning device for marine gate slots in nuclear power plants, including a winch and a cleaning frame;

[0006] The winch includes a drum, a synchronous motor, and a wire rope. The drum is controlled to rotate by the synchronous motor, and the wire rope is wound on the drum.

[0007] The cleaning frame is connected to the free end of the wire rope and can be moved up and down by a winch;

[0008] The cleaning frame is equipped with a shovel blade and a pneumatic floating grinding disc on its side; the shovel blade is a downward-sloping blade with a beveled working end; the pneumatic floating grinding disc is located above the shovel blade, and the grinding disc surface of the pneumatic floating grinding disc is located on the same side as the working end of the shovel blade below it.

[0009] To optimize the above technical solution, the specific measures also include:

[0010] The winch also includes a winch bracket, a fixed-end bearing, a gearbox, and a control switch; the fixed-end bearing is installed on the upper end of the winch bracket, and the drum is installed between the fixed-end bearings; the gearbox and the control switch are connected to a synchronous motor, the gearbox is used to control the drum speed, and the control switch is used to control the start and stop.

[0011] Preferably, the winch support is a cuboid frame structure; the winch support has an internal cavity that can be retracted into the cavity after the cleaning frame is moved upward.

[0012] The rollers include a left roller and a right roller arranged symmetrically, and the synchronous motor is located between the two rollers to control both rollers simultaneously.

[0013] Furthermore, the cleaning frame is provided with a left connection point and a right connection point, which are respectively connected to the wire ropes of the left drum and the right drum.

[0014] Preferably, the cleaning frame is a cuboid frame structure; the cleaning frame includes a long horizontal side, a short vertical side, and connecting sides on the left and right sides; reinforcing columns are provided at the left and right connecting points on the long side.

[0015] Furthermore, the four corners of the front and rear of the cleaning frame are respectively provided with limiting rods, and the four limiting rods on each side are centrally symmetrically distributed, and the axis of each limiting rod is perpendicular to both the long side and the short side of the cleaning frame.

[0016] Furthermore, the cleaning frame is provided with a set of cleaning units on the left and right sides, and each cleaning unit includes a scraper blade and a pneumatic floating grinding disc.

[0017] Preferably, each cleaning unit consists of a double-headed pneumatic floating grinding disc and four blades. The four blades include two blades at the front and two blades at the back. The two grinding disc surfaces of the double-headed pneumatic floating grinding disc are respectively set to correspond to the front and back blades.

[0018] Preferably, the shovel blade is angled downwards at 40-50°; the working end of the shovel blade is detachable; and the pneumatic floating grinding disc is waterproof and can be disassembled.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This utility model provides a marine organism cleaning device for marine gate slots in nuclear power plants, consisting of a winch and a cleaning frame. The winch controls the up-and-down movement of the cleaning frame; shovel blades and a pneumatic floating grinding disc are installed on the sides of the cleaning frame; the shovel blades first remove marine organisms from both sides of the gate slot, and then the pneumatic floating grinding disc further grinds both sides of the gate slot to achieve the purpose of removing marine organisms.

[0021] The device is flexible to install and dismantle, convenient to construct, and will not affect the gate slot structure and system operation. It avoids the risk of personal injury such as diving operations that would result in direct cleaning operations by workers, reduces construction time, and effectively improves the efficiency of marine organism cleaning in the marine engineering gate slots of in-service nuclear power plants.

[0022] Both the winch bracket and the cleaning frame of this utility model are rectangular frame structures. In use, the winch bracket is set on the gate slot, and the cleaning frame is used for cleaning. At the same time, the internal cavity of the winch bracket can be used to store the cleaning frame in a drawer-like manner, which shortens the equipment deployment time and facilitates transportation. Attached Figure Description

[0023] Figure 1 : A schematic diagram of the structure of the marine organism cleaning device for the marine gate trough of a nuclear power plant according to this utility model.

[0024] Figure 2 : A cross-sectional structural schematic diagram of the marine organism cleaning device for the marine engineering gate trough of a nuclear power plant according to this utility model.

[0025] In the diagram: 1-Winder bracket, 2-Fixed end bearing, 3-Drum, 4-Synchronous motor, 5-Gearbox, 6-Control switch, 7-Wire rope, 8-Cleaning frame, 9-Limit rod, 10-Shovel blade, 11-Pneumatic floating grinding disc, 12-Winder. Detailed Implementation

[0026] The present invention will be further described in detail below through embodiments, but it should not be construed as the scope of the present invention being limited to the following embodiments. All technologies implemented based on the present invention fall within the scope of the present invention.

[0027] In the description of this utility model, it should also be noted that:

[0028] The orientations or positional relationships described are based on the relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to 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. In this embodiment, the orientation is used for descriptive purposes. Figure 1 The inside is the back, facing the direction Figure 1 Outside is front.

[0029] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the following:

[0030] This utility model provides a device for cleaning marine organisms from the marine gate trough of a nuclear power plant, such as... Figure 1As shown, the system includes a winch 12, a winch support 1, and a cleaning frame 8. The winch 12 includes a drum 3, a synchronous motor 4, and a wire rope 7. The drum 3 is controlled to rotate by the synchronous motor 4, and the wire rope 7 is wound on the drum 3. The cleaning frame 8 is connected to the free end of the wire rope 7 and can be moved up and down by the winch 12. A shovel blade 10 and a pneumatic floating grinding disc 11 are installed on the side of the cleaning frame 8. The shovel blade 10 is a downward-sloping blade with a beveled working end. The pneumatic floating grinding disc 11 is located above the shovel blade 10, and the grinding disc surface of the pneumatic floating grinding disc 11 is on the same side as the working end of the shovel blade 10 below it.

[0031] In some embodiments, the winch 12 also includes a winch bracket 1, a fixed end bearing 2, a gearbox 5, and a control switch 6; the fixed end bearing 2 is installed on the upper end of the winch bracket 1, and the drum 3 is installed between the fixed end bearings 2; the gearbox 5 and the control switch 6 are connected to the synchronous motor 4, the gearbox 5 is used to control the speed of the drum 3 to maintain the stable lifting of the winch 12, and the control switch 6 is equipped with three buttons: emergency stop, up, and down, which facilitates operation while ensuring the safety of the device.

[0032] Preferably, the drum 3 includes a left drum and a right drum arranged symmetrically, and a synchronous motor 4 is located between the two drums 3 to control the two drums 3 at the same time, so as to ensure that the two drums 3 lift and lower synchronously.

[0033] In some implementations, the winch support 1 is welded from 100*100*5mm carbon steel square tubing, forming a cuboid structure. The long side of the support is reinforced with cross-bracing welds to ensure structural integrity under long-term heavy loads. The internal cavity of the winch support 1 can accommodate the cleaning frame 8, shortening equipment deployment time and facilitating transportation.

[0034] Preferably, the cleaning frame 8 is provided with a left connection point and a right connection point, which are respectively connected to the steel wire ropes 7 of the left drum and the right drum, adopting a double-point symmetrical connection to avoid the frame tilting and rotating.

[0035] In some embodiments, the cleaning frame 8 is welded from 50*50*3mm carbon steel square tubing and has a cuboid structure. The cleaning frame 8 includes a long horizontal side, a short vertical side, and connecting sides on the left and right sides. Reinforcing columns are provided on the long side corresponding to the left and right connecting points, which improves the reliability of the overall frame structure and extends the service life of the device.

[0036] In some implementations, limiting rods 9 are provided at the four corners of the front and rear of the cleaning frame 8. The four limiting rods 9 on each side are centrally symmetrically distributed, and the axis of each limiting rod 9 is perpendicular to both the long and short sides of the cleaning frame 8. This keeps the cleaning frame 8 horizontal as a whole during movement and prevents it from deviating to one end. At the same time, the four corner limiting rods 9 form an automatic centering system, so that no manual fine-tuning is required when the cleaning frame 8 is lowered.

[0037] In some embodiments, a set of cleaning units is provided on the left and right sides of the cleaning frame 8. Each cleaning unit consists of a double-headed pneumatic floating grinding disc 11 and four scraper blades 10. The four scraper blades 10 include two front and two rear scraper blades 10. The two grinding disc surfaces of the double-headed pneumatic floating grinding disc 11 are respectively arranged corresponding to the front and rear scraper blades 10, such as... Figure 2 As shown. The shovel blades 10 and the pneumatic floating grinding discs 11 on each side work together to clean.

[0038] Preferably, the blade 10 is angled downwards at 40-50°; the working end of the blade 10 is detachable for quick replacement, reducing downtime of the device.

[0039] Preferably, the pneumatic floating grinding disc 11 is waterproof.

[0040] The usage of this utility model, based on the above specific structure, is described below:

[0041] Install the winch bracket 1 directly above the gate and adjust its position to maintain approximately the same distance from both sides of the gate. By operating the control switch 6 of the winch 12, control the cleaning frame 8 to move up and down to clean the marine organisms on both sides of the gate slot. The cleaning of marine organisms is divided into two steps: the first step is to directly remove the marine organisms attached to both sides of the gate slot by using the oblique shovel blades 10 installed at the lower end of the cleaning frame 8 under the action of gravity; the second step is to use the pneumatic floating grinding disc 11 to grind the marine organisms on both sides of the gate slot clean.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the present utility model's technical solution and based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model's technical solution.

Claims

1. A nuclear power plant marine gate trench marine organism cleaning device, characterized by: Includes the winch and cleaning frame; The winch includes a drum, a synchronous motor, and a wire rope. The drum is controlled to rotate by the synchronous motor, and the wire rope is wound on the drum. The cleaning frame is connected to the free end of the wire rope and can be moved up and down by a winch; The cleaning frame is equipped with a shovel blade and a pneumatic floating grinding disc on its side; the shovel blade is a downward-sloping blade with a beveled working end; the pneumatic floating grinding disc is located above the shovel blade, and the grinding disc surface of the pneumatic floating grinding disc is located on the same side as the working end of the shovel blade below it.

2. The marine organism cleaning device for the marine engineering gate slot of a nuclear power plant according to claim 1, characterized in that: The winch also includes a winch bracket, a fixed-end bearing, a gearbox, and a control switch; the fixed-end bearing is installed on the upper end of the winch bracket, and the drum is installed between the fixed-end bearings; the gearbox and the control switch are connected to a synchronous motor, the gearbox is used to control the drum speed, and the control switch is used to control the start and stop.

3. The marine organism cleaning device for the marine gate trough of a nuclear power plant according to claim 2, characterized in that: The winch support is a cuboid frame structure; the winch support has an internal cavity that can be retracted into the cavity after the cleaning frame is moved upward.

4. The marine organism cleaning device for the marine gate trough of a nuclear power plant according to claim 1, characterized in that: The rollers include a left roller and a right roller arranged symmetrically, and the synchronous motor is located between the two rollers to control the two rollers simultaneously.

5. The marine organism cleaning device for the marine gate trough of a nuclear power plant according to claim 4, characterized in that: The cleaning frame is provided with a left connection point and a right connection point, which are respectively connected to the wire ropes of the left drum and the right drum.

6. The marine organism cleaning device for the marine gate trough of a nuclear power plant according to claim 5, characterized in that: The cleaning frame is a cuboid frame structure; the cleaning frame includes a long horizontal side, a short vertical side, and connecting edges on the left and right sides. Reinforcing columns are installed along the long side at the left and right connection points.

7. The marine organism cleaning device for the marine gate trough of a nuclear power plant according to claim 6, characterized in that: Limiting rods are provided at the four corners of the front and rear of the cleaning frame.

8. The marine organism cleaning device for the marine gate trough of a nuclear power plant according to claim 1, characterized in that: The cleaning frame has a set of cleaning units on the left and right sides, and each cleaning unit includes a scraper blade and a pneumatic floating grinding disc.

9. The marine organism cleaning device for the marine engineering gate trough of a nuclear power plant according to claim 8, characterized in that: Each cleaning unit consists of a dual-headed pneumatic floating grinding disc and four blades. The four blades include two blades at the front and two blades at the back. The two grinding disc surfaces of the dual-headed pneumatic floating grinding disc are respectively set to correspond to the front and back blades.

10. The marine organism cleaning device for the marine gate trough of a nuclear power plant according to claim 1, characterized in that: The blade is angled downwards at 40-50°; the working end of the blade is detachable.

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