Shore-based sonar automatic lifting support for nuclear power station

Abstract

The invention discloses a shore-based sonar automatic lifting support for a nuclear power station, and the support comprises a mounting support, one side of the mounting support is provided with a telescopic support, and the top end of the telescopic support is provided with a drive motor; a sonar installation hanging basket is arranged at the bottom end of the telescopic support, an ultrasonic liquid level meter is arranged on the telescopic support, a control box is arranged on the installation support, and the control box is electrically connected with the driving motor and the ultrasonic liquid level meter. The problem that when the sea level height changes, sonar cannot accurately detect marine organisms, and consequently the monitoring and early warning effect is poor is solved, the monitoring and early warning accuracy is improved, and it is guaranteed that water enters the water intake of the nuclear power plant smoothly.

Description

Technical Field

[0001] The invention belongs to the technical field of water intake monitoring equipment for nuclear power plants, and in particular relates to a shore-based sonar automatic lifting bracket for nuclear power plants. Background Art

[0002] With the development of society and economy, carbon emissions and climate warming are affecting the marine environment, especially in the waters around coastal nuclear power plants. Sudden red tides and short-term proliferation of plankton may lead to blockage of nuclear power water intakes, resulting in insufficient cooling water supply and causing power reduction of nuclear power units. In severe cases, it may even cause shutdown.

[0003] At present, the monitoring of marine life at the water intake of nuclear power plants is mainly done by sonar. Since different marine life are located at different depths in the seawater, underwater monitoring is mostly carried out by sonar mounted on a lifting device. The sonar is controlled by the lifting device to stay at a fixed position below the water surface. When marine life monitoring is required, the sonar is lowered to the seabed for monitoring by manually controlling the descending distance of the lifting device, and then returns to the fixed position after monitoring. However, when tidal phenomena occur, the depth of marine life changes due to changes in the sea level, resulting in the inability of sonar to accurately detect marine life, resulting in poor monitoring and early warning effects. Summary of the invention

[0004] The purpose of the present invention is to provide a shore-based sonar automatic lifting bracket for a nuclear power plant, which monitors the sea level through an ultrasonic level meter and adjusts the telescopic bracket in real time to ensure that the sonar can accurately detect marine organisms, thereby improving the monitoring and early warning effects.

[0005] The present invention adopts the following technical solutions:

[0006] A shore-based sonar automatic lifting bracket for a nuclear power plant comprises: a mounting bracket, a telescopic bracket is arranged on one side of the mounting bracket, and a driving motor is arranged on the top of the telescopic bracket;

[0007] A sonar installation basket is arranged at the bottom end of the telescopic bracket, an ultrasonic level meter is arranged on the telescopic bracket, and a control box is arranged on the installation bracket, and the control box is electrically connected with the driving motor and the ultrasonic level meter respectively.

[0008] Furthermore, the control box includes a power module, a PLC and a servo driver. The PLC is used to receive water surface height data from the ultrasonic level meter, control the servo driver according to the water surface height data, and further control the action of the drive motor.

[0009] Furthermore, the control box also includes a touch screen, which is electrically connected to the PLC. The touch screen is used to manually set the descent depth or ascent height of the sonar installation basket, and the servo driver is controlled by the PLC to control the movement of the drive motor.

[0010] Furthermore, the PLC includes a timer, and the timer is used to control the servo driver, which in turn controls the drive motor to periodically raise the sonar above the sea level for drying.

[0011] Furthermore, a personnel ladder is provided on one side of the mounting bracket for cleaning and maintaining the sonar.

[0012] Furthermore, a mechanical locking device is provided at the connection between the telescopic bracket and the sonar mounting basket. When the mechanical locking device is locked, the sonar mounting basket is fixed relative to the telescopic bracket. When the mechanical locking device is opened, the sonar mounting basket can rotate relative to the telescopic bracket.

[0013] Furthermore, the telescopic bracket and the sonar mounting basket are provided with sacrificial anodes.

[0014] Furthermore, both the telescopic bracket and the sonar mounting basket are provided with a marine biofouling-proof coating.

[0015] Furthermore, the telescopic bracket includes a plurality of rods nested with each other.

[0016] The beneficial effects of the present invention are as follows: an ultrasonic level meter is arranged on the telescopic bracket, and a control box electrically connected to the ultrasonic level meter and the driving motor is arranged respectively; when the sea level changes, the control box receives the water level data and controls the driving motor to move, thereby driving the telescopic bracket to automatically rise or fall, so that the sonar can detect marine organisms more accurately, thereby improving the monitoring and early warning effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the mounting bracket of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the telescopic bracket of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the sonar installation basket of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the personnel climbing ladder of the present invention;

[0022] Figure 6 This is the automatic control flow chart of the present invention;

[0023] Figure 7 This is a manual control flow chart of the present invention;

[0024] Among them, 1. mounting bracket, 2. telescopic bracket, 3. driving motor, 4. sonar mounting basket, 5. ultrasonic level meter, 6. control box, 7. personnel ladder, 8. mechanical locking device, 9. screws, 10. first sonar, 11. second sonar, 12. third sonar, 13. first mounting bracket, 14. second mounting bracket, 15. third mounting bracket, 16 flange, 17. buckle. DETAILED DESCRIPTION

[0025] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] A shore-based sonar automatic lifting bracket for a nuclear power plant, such as Figure 1 As shown, it includes: a mounting bracket 1, a telescopic bracket 2 is arranged on one side of the mounting bracket 1, a driving motor 3 is arranged on the top of the telescopic bracket 2, and a sonar mounting hanging basket 4 is arranged on the bottom of the telescopic bracket 2, as shown in FIG. Figure 3 As shown, an ultrasonic level meter 5 is provided on the telescopic bracket 2. Figure 2 As shown, a control box 6 is provided on the mounting bracket 1 , and the control box 6 is electrically connected to the driving motor 3 and the ultrasonic level meter 5 respectively.

[0027] A first mounting frame 13 is arranged on the top of the sonar mounting basket 4, a second mounting frame 14 is arranged in the middle, and a third mounting frame 15 is arranged on the bottom. The first mounting frame 13 is used to install the first sonar 10, the second mounting frame 14 is used to install the second sonar 11, and the third mounting frame 15 is used to install the third sonar 12.

[0028] When a tidal phenomenon occurs, the sea level changes. Since marine organisms live at a fixed depth underwater, the position of the marine organisms also changes accordingly. If there are a large number of marine organisms 1 meter below the sea level, it will have a greater impact on the water intake of the nuclear power plant, so the monitoring of marine organisms is mostly concentrated near this position. The present invention arranges an ultrasonic level meter 5 on the telescopic bracket, and arranges a control box 6 electrically connected to the ultrasonic level meter 5 and the drive motor 3 respectively. The control box 6 receives water surface height data and controls the drive motor 3 to move, thereby driving the telescopic bracket 2 to automatically rise or fall, so that the sonar remains at a fixed depth underwater according to tidal changes, and can more accurately detect marine organisms, thereby improving the monitoring and early warning effect.

[0029] The control box 6 includes a power module, a PLC and a servo driver. The PLC is used to receive the water level data of the ultrasonic liquid level meter 5, control the servo driver according to the water level data, and further control the action of the drive motor 3.

[0030] like Figure 6As shown, the ultrasonic level meter 5 transmits the water surface height data to the PLC, and the PLC determines whether the sonar is in the set position. If it is in the set position, the position of the telescopic bracket 2 remains unchanged. If it is not in the set position, the PLC controls the servo driver, and then controls the drive motor 3 to operate until the sonar reaches the set position.

[0031] PLC has advanced anti-interference capability and high reliability. Using PLC as the controller of the telescopic bracket 2 can automatically control the rising height or descending depth of the telescopic bracket 2 more accurately according to the water surface height data.

[0032] The control box 6 also includes a touch screen, which is electrically connected to the PLC. The touch screen is used to manually set the descent depth or ascent height of the sonar installation basket 4, and controls the servo driver through the PLC, thereby controlling the action of the drive motor 3.

[0033] like Figure 7 As shown, the staff manually sets the sonar descent depth or ascent height, and the PLC determines whether the sonar is in the set position. If it is in the set position, the position of the telescopic bracket 2 remains unchanged. If it is not in the set position, the PLC controls the servo driver, and then controls the drive motor 3 to move until the sonar reaches the set position.

[0034] When it is necessary to expand or reduce the monitoring range, or to lift the sonar installation basket 4 above the water surface for cleaning and maintenance, the descent depth or ascent height can be manually set through the touch screen, thereby improving the flexibility of operation.

[0035] The PLC includes a timer, which is used to control the servo driver, and then control the drive motor 3 to regularly lift the sonar above the sea level for drying.

[0036] The parts of the sonar, sonar mounting basket 4 and telescopic bracket 2 that contact the seawater are in the seawater for a long time, which may easily lead to the attachment of marine organisms and affect the monitoring effect. The start and stop time of the equipment can be accurately and automatically controlled through the timer, and the sonar and other parts of the equipment that contact the seawater can be automatically lifted to the water surface for drying regularly.

[0037] A personnel ladder 7 is provided on one side of the mounting bracket 1. Figure 5 As shown, it is convenient for staff to clean and maintain the sonar.

[0038] like Figure 4 As shown, a mechanical locking device 8 is provided at the connection between the telescopic bracket 2 and the sonar mounting basket 4. When the mechanical locking device 8 is locked, the sonar mounting basket 4 is fixed relative to the telescopic bracket 2. When the mechanical locking device 8 is opened, the sonar mounting basket 4 can rotate 90° relative to the telescopic bracket 2.

[0039] The mechanical locking device 8 includes a flange 16, which is arranged between the bottom end of the telescopic bracket 2 and the top end of the sonar mounting basket 4, and is used to connect the telescopic bracket 2 and the sonar mounting basket 4. Screws 9 are arranged on the flange 16, and the screws 9 are used to fix the flange 16 on the sonar mounting basket 4. Buckles 17 are arranged on both sides of the telescopic bracket 2 for locking the mounting basket 4.

[0040] When the staff cleans and repairs the sonar, they can loosen the screw 9 and the buckle 17, manually rotate the hanging basket 90°, and clean the sonar in all directions.

[0041] The telescopic bracket 2 and the sonar installation basket 4 are provided with sacrificial anodes.

[0042] The telescopic bracket 2 and the sonar mounting basket 4 are both made of 316L stainless steel, which is easily corroded by seawater. By setting a sacrificial anode, the metal that is more susceptible to corrosion (i.e., the sacrificial anode) replaces the metal to be protected (i.e., the telescopic bracket 2 and the sonar mounting basket 4) for corrosion protection. The sacrificial anode is made of aluminum, magnesium or zinc.

[0043] The telescopic bracket 2 and the sonar installation basket 4 are both provided with a coating to prevent marine organism attachment, which can effectively prevent the impact of marine organisms on the equipment, extend the service life and reduce maintenance costs.

[0044] like Figure 3 As shown, the telescopic support 2 includes a plurality of rods nested with each other.

[0045] The nested multi-section rods can further expand the telescopic range of the telescopic bracket 2, greatly extend the depth of the telescopic bracket 2 into the seawater, realize the monitoring of the entire section from the water surface to the bottom of the water, and reduce the monitoring blind area.

Claims

1. A shore-based sonar automatic lifting bracket for a nuclear power plant, characterized in that: include: A mounting bracket (1), a telescopic bracket (2) being provided on one side of the mounting bracket (1), and a driving motor (3) being provided at the top end of the telescopic bracket (2); A sonar mounting basket (4) is arranged at the bottom end of the telescopic bracket (2), an ultrasonic level meter (5) is arranged on the telescopic bracket (2), and a control box (6) is arranged on the mounting bracket (1), and the control box (6) is electrically connected to the drive motor (3) and the ultrasonic level meter (5), respectively.

2. The shore-based sonar automatic lifting bracket for a nuclear power plant according to claim 1 is characterized in that: The control box (6) comprises a power module, a PLC and a servo driver. The PLC is used to receive water surface height data of the ultrasonic liquid level meter (5), control the servo driver according to the water surface height data, and further control the operation of the drive motor (3).

3. The shore-based sonar automatic lifting bracket for a nuclear power plant according to claim 2 is characterized in that: The control box (6) also includes a touch screen, which is electrically connected to the PLC. The touch screen is used to manually set the descent depth or ascent height of the sonar installation basket (4), and the servo driver is controlled by the PLC to further control the action of the drive motor (3).

4. The shore-based sonar automatic lifting bracket for a nuclear power plant according to claim 3 is characterized in that: The PLC comprises a timer, and the timer is used to control the servo driver, thereby controlling the drive motor (3) to regularly lift the sonar above the sea level for drying.

5. The shore-based sonar automatic lifting bracket for a nuclear power plant according to claim 1 or 4, characterized in that: A personnel ladder (7) is provided on one side of the mounting bracket (1) for cleaning and maintaining the sonar.

6. The shore-based sonar automatic lifting bracket for a nuclear power plant according to claim 5, characterized in that: A mechanical locking device (8) is provided at the connection between the telescopic bracket (2) and the sonar installation basket (4); when the mechanical locking device (8) is locked, the sonar installation basket (4) is fixed relative to the telescopic bracket (2); when the mechanical locking device (8) is opened, the sonar installation basket (4) can rotate relative to the telescopic bracket (2).

7. The shore-based sonar automatic lifting bracket for a nuclear power plant according to claim 6, characterized in that: The telescopic bracket (2) and the sonar installation basket (4) are provided with sacrificial anodes.

8. The shore-based sonar automatic lifting bracket for a nuclear power plant according to claim 7, characterized in that: The telescopic bracket (2) and the sonar installation basket (4) are both provided with a marine organism adhesion-preventing coating.

9. The shore-based sonar automatic lifting bracket for a nuclear power plant according to claim 8, characterized in that: The telescopic bracket (2) comprises a plurality of rod sections which are nested with each other.

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