CN114582536B - Automatic overturning system of spent fuel storage grillwork for nuclear island fuel plant - Google Patents
Automatic overturning system of spent fuel storage grillwork for nuclear island fuel plant Download PDFInfo
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- CN114582536B CN114582536B CN202011376669.2A CN202011376669A CN114582536B CN 114582536 B CN114582536 B CN 114582536B CN 202011376669 A CN202011376669 A CN 202011376669A CN 114582536 B CN114582536 B CN 114582536B
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- 239000002915 spent fuel radioactive waste Substances 0.000 title claims abstract description 32
- 238000003860 storage Methods 0.000 title claims abstract description 31
- 239000000446 fuel Substances 0.000 title claims abstract description 29
- 230000007306 turnover Effects 0.000 claims abstract description 104
- 230000007246 mechanism Effects 0.000 claims abstract description 86
- 238000000034 method Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 12
- 230000009471 action Effects 0.000 description 3
- 244000309464 bull Species 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Abstract
The invention belongs to an automatic overturning system, and particularly relates to an automatic overturning system for a spent fuel storage grillwork for a nuclear island fuel plant. An automatic overturning system for spent fuel storage grillwork for a nuclear island fuel plant comprises an electric walking platform, an overturning mechanism and a power system. The invention has the remarkable effects that: the system carries a turnover machine with a large gear ring structure through an electric walking platform with a steering wheel structure, is matched with a safety control system formed by a safety sensor and the like, and realizes the automatic turnover of the grid through operating a wireless industrial remote controller or a wire control handle.
Description
Technical Field
The invention belongs to an automatic overturning system, and particularly relates to an automatic overturning system for a spent fuel storage grillwork for a nuclear island fuel plant.
Background
The existing spent fuel storage grillwork for the nuclear island fuel factory is a standard fixed structure grillwork, and in the process of transporting spent fuel, the spent fuel storage grillwork for the nuclear island fuel factory needs to be turned over in the air based on the self structural characteristics of the spent fuel storage grillwork for the nuclear island fuel factory and the limitation of the fuel factory environment, and adverse factors are as follows:
1. The overturning of the grillwork is realized in the air through the cooperation of the crane and the chain block, so that the gravity center of the grillwork is higher and no supporting point exists, and the grillwork is easy to incline and incline due to unstable gravity center, so that equipment is damaged and personnel are injured; the quality safety risk is extremely high in the overturning process;
2. Because the total weight of the grid and the L-shaped overturning bracket is close to the rated load of the crane, the total weight of the grid and the L-shaped overturning bracket often exceeds the rated load of the crane due to shaking in the air overturning process, so that the crane alarms and parks, the grid is suspended in the air, the crane is in place and overturned again after being recovered by a professional, the operation difficulty is high, a great deal of manpower, material resources and financial resources are wasted, the working efficiency is low, and the quality safety risk is high.
Disclosure of Invention
The invention aims at the defects of the prior art and provides an automatic overturning system for a spent fuel storage grillwork for a nuclear island fuel plant.
The invention is realized in the following way: an automatic overturning system for spent fuel storage grillwork for a nuclear island fuel plant comprises an electric walking platform, an overturning mechanism and a power system.
The automatic overturning system for the spent fuel storage grillwork for the nuclear island fuel plant comprises the overturning mechanism structure frame, the driving part and the supporting structure.
The automatic overturning system for the spent fuel storage grillwork for the nuclear island fuel plant comprises the overturning mechanism structure body and the gear ring, wherein the driving part comprises the motor speed reducer, the pinion transmits torque to the pinion through the driving part, the pinion and the large gear ring transmit torque through gear engagement, and the torque is transmitted to the overturning structure body, so that the overturning structure body is driven to overturn by 90 degrees.
According to the automatic overturning system for the spent fuel storage grillwork for the nuclear island fuel plant, the overturning mechanism adopts a double-side gear transmission mode, a three-phase asynchronous motor is used as a power source, a speed reducer with a certain speed ratio is used for decelerating and then driving two side pinions to rotate, the two side pinions drive two side 120-degree large gear rings to carry out transmission, the two side large gear rings are fixed together with an overturning main body frame through bolts, and then the overturning main body is driven to overturn by 90 degrees.
The automatic overturning system of the spent fuel storage grillwork for the nuclear island fuel plant comprises the electric walking platform, a platform bracket and the following components,
And (3) a control system: the Siemens PLC S7-200 SMART programmable controller ST60 is used as a core CPU, and 2 blocks of 16 paths of digital quantity input modules, 1 block of 8 paths of analog quantity input modules and 1 block of 4 paths of analog quantity output modules are expanded; 2 traction servo controllers for driving steering wheels of the trolley to advance and retreat; 4 steering servo controllers for driving the steering of the trolley; 1 frequency converter for driving the platform overturning motor; 12 paths of 4 steering wheel in-place position sensors are arranged; 4 paths of analog quantity rotation angle sensors; 2 paths of in-place sensors for overturning; industrial-grade hand-held wireless 1 station; a wired remote controller 1; 1, a 10 inch man-machine interface touches a liquid crystal screen to display information; 8 paths of obstacle ultrasonic radar detection sensors; 48 lead-acid power batteries and 2 inverters are used as power supply;
And (3) a PLC controller: the touch screen is used for receiving all instruction operations of an operator through a wired or wireless remote controller and driving the touch screen to monitor the running state; and monitoring a protection command in the safety system in real time, and outputting the command to drive the electric transmission device to operate or stop. Monitoring the discharge condition of the battery, and prompting the charge electro-optic alarm; the output turnover mechanism is driven to operate, and locking between the electric walking platform and the turnover mechanism is achieved.
The automatic overturning system of the spent fuel storage grillwork for the nuclear island fuel factory building comprises the safety system, in particular,
Safety limit: the outer side of the circular track plate of the turnover mechanism main body is provided with 4 guiding limit devices, so that the track is ensured not to deviate along the track direction and is kept stable in the grid turnover process, in addition, the front and rear 4 limit supports are respectively provided with 1 limit switch, when the turnover mechanism reaches a vertical position or a horizontal position, the turnover mechanism automatically stops turnover through limit switches arranged on two sides of the turnover mechanism, in-place sensors and fed back position information, and the safety of the equipment in the operation process is ensured;
And (3) audible and visual alarm: four corners of the electric walking platform are provided with audible and visual alarm devices, and the electric walking platform can give out alarm lamp flickering and warning sounds in the running process so as to prevent workers from entering an operation area by mistake to generate collision accidents;
Emergency braking: an emergency braking button is arranged at the four corners and the middle position in the long direction of the electric walking platform, and the walking platform is stopped unconditionally by pressing the button under special conditions;
Safe edge touching: the electric walking platform is provided with an anti-collision safety touch edge, and when the safety touch edge collides with an external object, the walking platform immediately stops and gives out an obstacle alarm;
Radar detector: the head and the tail of the electric walking platform carrier are respectively provided with 1 set of inlet obstacle ultrasonic radar detection sensor;
Operation blocking: the driving output is interlocked with the procedure of the turnover mechanism, so that the locking between the electric walking platform and the turnover mechanism is realized.
The automatic overturning system for the spent fuel storage grillwork for the nuclear island fuel plant is characterized in that the power system is a rechargeable storage battery pack and a manual charging station.
The invention has the remarkable effects that: the system carries a turnover machine with a large gear ring structure through an electric walking platform with a steering wheel structure, is matched with a safety control system formed by a safety sensor and the like, and realizes the automatic turnover of the grid through operating a wireless industrial remote controller or a wire control handle.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an automatic overturning system of a spent fuel storage grillwork for a nuclear island fuel plant;
FIG. 2 is a schematic diagram before flipping;
FIG. 3 is a schematic diagram in flip;
FIG. 4 is a schematic diagram after inversion;
FIG. 5 is a logical diagram of the system components;
FIG. 6 is a system overview;
FIG. 7 is a schematic diagram of a turnover mechanism;
FIG. 8 is a schematic diagram of a turnover mechanism;
FIG. 9 is a schematic view of the back structure of FIG. 8;
FIG. 10 is a schematic diagram of a mobile platform structure
FIG. 11 is a schematic view of the back structure of FIG. 10;
fig. 12 is a schematic view of an intermediate idler assembly;
fig. 13 is a schematic view of an end idler assembly;
FIG. 14 is a schematic view of the driving part of the tilting mechanism
FIG. 15 is a schematic view of the back structure of FIG. 14;
FIG. 16 is an enlarged view of a portion of the drive of the tilting mechanism;
FIG. 17 is a schematic diagram of a flip mechanism drive top view;
FIG. 18 is a schematic diagram of a mobile platform structure;
FIG. 19 is a schematic diagram of a positioning device;
FIG. 20 is a schematic view of the back structure of FIG. 19;
FIG. 21 is a schematic diagram of a limit switch assembly;
fig. 22 is a schematic view of a guide stop device.
Wherein: the device comprises a moving platform, a turnover mechanism, a fuel grid needing to be turned, a turnover mechanism driving part, a turnover mechanism carrier roller device, a turnover mechanism frame, a grid protection plate, a limit device, a power gear wheel, a turnover main body round track plate, a turnover main body guide plate, a turnover mechanism carrier roller device, a terminal carrier roller, a middle carrier roller, a driving part, a power gear ring, a main transmission shaft, a transmission pinion, a speed reducing motor, an auxiliary support, a whole frame, a hoisting device, a safety radar, a safety contact edge, a emergency stop button, a safety button, a observation hole, a charging socket, a cabinet, a man-machine interaction interface, a front limit support, a rear limit support, a guide limit device, a limit switch and a limit support.
Detailed Description
An automatic overturning system for spent fuel storage grillwork for a nuclear island fuel plant comprises an electric walking platform and an overturning mechanism.
1. Turnover mechanism
The turnover mechanism mainly comprises a turnover mechanism structure frame, a driving part and a supporting structure. Wherein the turnover mechanism structure frame comprises a turnover structure body and a gear ring, and the turnover mechanism driving part comprises a motor speed reducer, a pinion and the like. The torque is transmitted to the pinion through the driving part, the pinion and the bull gear are meshed through the gears to transmit the torque, and the torque is transmitted to the turnover structure frame, so that the turnover structure frame is driven to turn 90 degrees
The turnover mechanism on the spent fuel storage grillwork automatic turnover system adopts a double-side gear transmission mode, a three-phase asynchronous motor is used as a power source, and the three-phase asynchronous motor drives two side pinions to rotate after being decelerated by a speed reducer with a certain speed ratio, the two side pinions drive two side 120-degree large gear rings to drive, the two side large gear rings are fixed together with a turnover main body frame through bolts, and then the turnover main body is driven to turn by 90 degrees.
The movement of the turnover mechanism loaded on the car body is controlled by operating a wireless or wired industrial remote controller or a man-machine interface 3 mode. So that the turnover mechanism can rotate 90 degrees and turn from the horizontal position to the vertical position. Meanwhile, the safety locking function is completed through a program, and when the turnover mechanism reaches the vertical position, the system automatically stops turnover to protect stable hoisting of the storage grillwork through position information fed back by the in-place sensors arranged on two sides of the turnover mechanism. The turnover machine can send a running instruction through the handheld remote controller only after the turnover mechanism on the vehicle body is horizontally stopped in place. All overturning actions are completed by the handheld remote controller, and the whole transportation process by single person operation can be completely realized.
Scheme structural feature of turnover mechanism
The turnover mechanism adopts mechanical gear transmission, the motor adopts a three-phase asynchronous motor and a speed reducer. The large gear is cast by cast steel, the gear is a high-quality alloy steel forging piece, and the transmission shaft is processed by a high-quality forging piece. Ensure stable and reliable overturning. The motor can be locked in position under the condition of sudden power failure by carrying out slow-start rotation and band-type brake, so that the safety and reliability are greatly enhanced.
The turnover mechanism is characterized in that:
a. eight bearing roller mechanisms guarantee equipment steady operation.
B. The mechanical gear type overturning system can not generate the overturning phenomenon.
C. The carrier roller and the overturning base are provided with a safety outer cover, so that the operation safety of personnel is ensured.
D. The inner bearing of the carrier roller adopts tapered roller bearings used in pairs, so that the inner bearing can adapt to various complicated stress conditions of uneven radial and transverse stress.
E. The industrial speed reducer is adopted, the noise is low, the moment is large, and the operation is more stable.
F. The motor has the functions of stopping, braking and self-locking, can stop at any position, and the turnover body is locked in situ, so that the motor is safe and reliable.
G. the electrical system is equipped with a frequency converter, including overcurrent, overload, short-circuit, and open-phase protection functions.
H. The electric appliance part adopts a protection breaker, an overload circuit breaker and an overcurrent protection contactor, so that potential safety hazards caused by overload are effectively prevented.
I. The indication alarm device effectively reminds staff of safe operation.
J. And a multiple limit switch and a mechanical protection device are adopted to determine the operation safety.
K. The motor of the equipment is started by slow start and stopped, and the operation is stable and quick. The phenomenon of sudden collapse does not occur.
And I, an overcurrent protection device is arranged, and the turnover machine exceeds the maximum turnover weight, can automatically cut off power for shutdown protection, and cannot damage a motor.
The turnover device mainly comprises a turnover main body, a turnover mechanism carrier roller device and a turnover mechanism driving part. The turnover mechanism structure frame comprises a turnover structure body and a large gear ring, and the turnover mechanism driving part comprises a motor speed reducer, a transmission pinion, a main transmission shaft and the like. The torque is transmitted to the pinion through the driving part, the pinion and the bull gear are meshed through the gears to transmit the torque, and the torque is transmitted to the turnover structure frame, so that the turnover structure frame is driven to turn 90 degrees. Two limit switches are respectively arranged on limit supports of the vertical and horizontal positions of the turnover mechanism, so that the turnover mechanism can be decelerated when approaching to the limit positions, and the turnover mechanism stably reaches the limit positions, and is safe and reliable.
Control system
The electrical control part of the automatic turning system of the spent fuel storage grillwork mainly takes Siemens PLC S7-200 SMART programmable controller ST60 as a core CPU, and expands 2 blocks of 16 paths of digital quantity input modules, 1 block of 8 paths of analog quantity input modules and 1 block of 4 paths of analog quantity output modules; 2 traction servo controllers for driving steering wheels of the trolley to advance and retreat; 4 steering servo controllers for driving the steering of the trolley; 1 frequency converter for driving the platform overturning motor; 12 paths of 4 steering wheel in-place position sensors are arranged; 4 paths of analog quantity rotation angle sensors; 2 paths of in-place sensors for overturning; industrial-grade hand-held wireless 1 station; a wired remote controller 1; 1, a 10 inch man-machine interface touches a liquid crystal screen to display information; 8 paths of obstacle ultrasonic radar detection sensors; 48 lead-acid power batteries and 2 inverters are used as power supply.
PLC controller
The Siemens S7 series PLC is adopted, has strong expansion capability and a strong module system, and supports the communication functions of a wireless serial port and a wireless Ethernet.
Powerful, compact and economical. The SIMATIC S7 universal controller can save installation space and has the characteristic of modular design. A large number of modules can be used to extend a centralized system or a system that creates a decentralized structure, depending on the task at hand, and promote cost-effective economies of the spare parts.
And the task completed by the PLC is that in the normal operation process, an operator is received to carry out all instruction operations through a wired or wireless remote controller, and the touch screen is driven to monitor the running state. And monitoring a protection command in the safety system in real time, and outputting the command to drive the electric transmission device to operate or stop. And monitoring the discharge condition of the battery, and prompting the charge and electro-optic alarm. The output turnover mechanism is driven to operate, and locking between the electric walking platform and the turnover mechanism is achieved.
Man-machine dialogue
The man-machine conversation is realized in three modes, an operator can input instruction information through keys of a hand-held wired or wireless remote controller, keys of an operating platform and keys in an operation section of a touch screen, and the touch screen is used for setting operation parameters of an automatic overturning system, including operation speed, operation direction, battery protection value and the like, and monitoring and displaying the operation speed, operation direction, in-place overturning machine, battery voltage state, monitoring motor operation current, servo motor operation state, fault alarm, fault code display and the like of an electric walking platform.
Control mode
The electric walking platform and the turnover mechanism are provided with manual control (wired/wireless remote control) and are provided with a manual starting mechanism, when the electric walking platform and the turnover mechanism are switched into a manual starting state, the electric walking platform and the turnover mechanism cannot be automatically started or automatically execute an operation command, and related actions are required to be executed according to remote control instructions of field operators.
2. Security system
Safety limit
The four-bar linkage turnover mechanism is characterized in that 4 guide limiting devices are arranged on the outer side of the round track plate of the turnover mechanism main body, the track is ensured not to deviate along the track direction, the stability is kept in the lattice turnover process, in addition, 1 limit switch is respectively arranged on the front and rear 4 limit supports, when the turnover mechanism reaches the vertical position or the horizontal position, the turnover mechanism automatically stops turnover through the position information fed back by the limit switches (in-place sensors) arranged on the two sides of the turnover mechanism, and the safety in the running process of equipment is ensured.
Audible and visual alarm
The four corners of the electric walking platform are provided with audible and visual alarm devices, and the electric walking platform can give out alarm lights to flash and alarm sounds in the running process so as to prevent workers from entering an operation area by mistake to generate collision accidents.
Emergency braking
The emergency braking buttons are arranged at the four corners and the middle positions in the long direction of the electric walking platform, and the emergency braking buttons can be pressed down under special conditions to stop the walking platform unconditionally. The button is arranged at four corners of the vehicle body and in the middle of the long-direction vehicle body.
Safe touch edge
The electric walking platform is provided with an anti-collision safety touch edge, when the safety touch edge collides with an external object, the walking platform immediately stops, gives out obstacle alarm, and only when the external object moves away from the route, the safety button needs to be manually pressed for safety, so that the walking platform can continue to operate.
Radar detector
The electric walking platform carrier locomotive and the car tail are respectively provided with 1 set of obstacle ultrasonic radar detection sensors of entering as obstacle avoidance protection mechanism, when the obstacle exists continuously in the driving direction, the walking platform operates in a decelerating mode, if the obstacle is not released within 1 second, the electric walking platform immediately stops and gives out an obstacle alarm, and after the obstacle disappears, the electric walking platform automatically starts to continue to execute the work before stopping.
Operation lock
The driving output is interlocked with the procedure of the turnover mechanism, so that the locking between the electric walking platform and the turnover mechanism is realized. And the limit protection function after 90-degree overturning ensures that the overturning position of the grid is accurate, and the grid can be stopped at any position in the overturning process and is stopped for self-locking. The grid keeps stable and non-moving, safe and reliable due to the sudden power-off and parking self-locking protection function.
3. Power system
Battery and charging
The automatic overturning system of the spent fuel grillwork adopts a storage battery pack to provide a power source for the spent fuel grillwork. The battery pack is provided with one battery, has long charge and discharge life, stable voltage characteristic, and long single charge service time, and can be rapidly charged. In addition, a manual charging station is also arranged on the vehicle, the length of the input end of the charging wire is at least 5M, the length of the output end of the charging wire is at least 5M, and a standard industrial plug is arranged for being in butt joint with a battery.
The innovation point of the invention is that:
The automatic overturning system for the spent fuel storage grillwork carries a large-sized overturning machine with a gear ring structure through an electric walking platform with a steering wheel structure, is matched with a safety control system consisting of a safety sensor and the like, realizes automatic overturning of the grillwork by operating a wireless industrial remote controller or a wire control handle, improves the working efficiency while reducing the investment of manpower and material resources, reduces the quality safety risk, and realizes mechanical installation automation.
The workflow of the device of the application is approximately as follows:
the device is a component for turning the fuel grillwork by 90 degrees from a horizontal state to form a vertical state, and comprises the following specific working procedures:
the fuel grillage is placed on the surface A of the turnover mechanism through a self-propelled crane, the turnover mechanism is carried by an electric walking platform truck and transported to the position right below a lifting hole of 0m of a KX factory building after passing through a civil engineering expansion area, a transmission system (a motor and a speed reducer) drives a pinion to rotate, the pinion is meshed with a large gear ring to drive the turnover mechanism to rotate, when the turnover mechanism rotates by 90 degrees, the fuel grillage is vertically formed by horizontal turnover, so that the fuel grillage is vertically placed on the surface A and turned into the surface B, and then is lifted away from the turnover mechanism through an auxiliary crane of +28.710m of the KX factory building, and is positioned in a spent fuel pool of the KX factory building.
The rated load capacity of the equipment is 15t, the overturning stroke is 90 degrees, and the running time is 60-80s. The motor in the transmission system has a self-locking function, and can realize the parking self-locking at any position.
The specific operation is as follows:
the grids are transported to the outside of the 0m expansion area of the K area by a large storage yard through a flat car;
hoisting the spent fuel storage grillwork to the surface A of a bearing table surface of an electric walking platform of an automatic introducing system through an automobile crane, and fixing the spent fuel storage grillwork by a grillwork fixing strap;
An operator resets all emergency stop buttons of the electric walking platform, and when the electric walking platform is displayed on the control screen to move, the operator can operate the remote controller to move the platform car (at the moment, the turnover mechanism forms a lock and cannot realize action);
an operator moves the spent fuel storage grillwork to a designated position to be turned over through operations such as forward movement, backward movement, 180-degree translation and the like of the platform truck;
An operator performs grid overturning through operating the overturning mechanism, and when the overturning mechanism performs grid overturning, the electric walking platform is automatically locked and cannot perform advancing, retreating, 180-degree horizontal movement and other operations so as to ensure the safety in the grid overturning process;
when the grid is turned over by 90 degrees, the turnover mechanism automatically stops and keeps stable, the grid is vertically seated on the B surface of the bearing table surface, an operator connects an auxiliary crane 10t hook of the K-region fuel factory building with the grid through a special lifting rigging, and the grid fixing binding belt is removed;
Lifting an auxiliary crane 10t hook, introducing the grid into the K region +20m fuel factory building, and finally positioning the grid in a spent fuel pool through the auxiliary crane for position and elevation adjustment;
the operator operates the turnover mechanism to rotate anticlockwise back to the initial position;
the operation personnel operate the remote controller to move the electric walking platform to the position outside the 0m expansion area of the K area for initially receiving the grid through the functions of forward movement, backward movement, 180-degree horizontal movement and the like of the platform truck to carry out the next circulation operation.
Claims (2)
1. An automatic upset system of spent fuel storage grillwork for nuclear island fuel factory building which characterized in that: comprises an electric walking platform, a turnover mechanism and a power system;
the turnover mechanism comprises a turnover mechanism structure frame, a driving part and a supporting structure;
The turnover mechanism structure frame comprises a turnover structure body and a gear ring, wherein the driving part comprises a motor speed reducer and a pinion, torque is transmitted to the pinion through the driving part, the pinion and the gear ring are meshed through a gear to transmit the torque, and the torque is transmitted to the turnover mechanism structure frame, so that the turnover mechanism structure frame is driven to turn over by 90 degrees;
The turnover mechanism adopts a double-side pinion transmission mode, a three-phase asynchronous motor is used as a power source, and the motor speed reducer with a certain speed ratio is used for reducing the speed to drive the pinions on two sides to rotate, the pinions on two sides drive the gear rings on two sides to drive, the gear rings on two sides and the structure frame of the turnover mechanism are fixed together through bolts, and then the structure frame of the turnover mechanism is driven to turn over by 90 degrees;
The electric walking platform comprises a platform bracket and also comprises the following components,
And (3) a control system: the Siemens PLC S7-200 SMART programmable controller ST60 is used as a core CPU, and 2 blocks of 16 paths of digital quantity input modules, 1 block of 8 paths of analog quantity input modules and 1 block of 4 paths of analog quantity output modules are expanded; 2 traction servo controllers for driving steering wheels of the trolley to advance and retreat; 4 steering servo controllers for driving the steering of the trolley; 12 paths of 4 steering wheel in-place position sensors are arranged; 4 paths of analog quantity rotation angle sensors; 2 paths of in-place sensors for overturning; a hand-held wireless remote controller 1 station; a wired remote controller 1; 1, a 10 inch man-machine interface touches a liquid crystal screen to display information; 8 paths of obstacle ultrasonic radar detection sensors; 48 lead-acid power batteries and 2 inverters are used as power supply;
Siemens PLC S7-200 SMART programmable controller ST60: the touch screen is used for receiving all instruction operations of an operator through a wired or wireless remote controller and driving the touch screen to monitor the running state; monitoring a protection command in a safety system in real time, outputting the command to drive a three-phase asynchronous motor and a motor speed reducer to run or stop, monitoring the discharge condition of a battery, and prompting charge-electro-acoustic alarm; the turnover mechanism is driven to operate, and locking between the electric walking platform and the turnover mechanism is achieved.
2. The automatic overturning system for spent fuel storage grillwork for nuclear island fuel plant as claimed in claim 1, wherein: the automatic overturning system of the spent fuel storage grillwork for the nuclear island fuel plant also comprises a safety system, in particular,
Safety limit: the outer side of the circular track plate of the turnover mechanism main body is provided with 4 guiding limit devices, so that the track is ensured not to deviate along the track direction and is kept stable in the grid turnover process, in addition, the front and rear 4 limit supports are respectively provided with 1 limit switch, when the turnover mechanism reaches a vertical position or a horizontal position, the turnover mechanism automatically stops turnover through limit switches arranged on two sides of the turnover mechanism, in-place sensors and fed back position information, and the safety of the equipment in the operation process is ensured;
And (3) audible and visual alarm: four corners of the electric walking platform are provided with audible and visual alarm devices, and the electric walking platform can give out alarm lamp flickering and warning sounds in the running process so as to prevent workers from entering an operation area by mistake to generate collision accidents;
Emergency braking: emergency brake buttons are arranged at four corners and the middle positions in the long direction of the electric walking platform, and the electric walking platform can stop unconditionally by pressing the buttons under special conditions;
Safe edge touching: the electric walking platform is provided with an anti-collision safety touch edge, and when the safety touch edge collides with an external object, the electric walking platform immediately stops and gives out an obstacle alarm;
Radar detector: the head and the tail of the electric walking platform are respectively provided with 1 set of obstacle ultrasonic radar detection sensor;
Operation blocking: the locking between the electric walking platform and the turnover mechanism is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011376669.2A CN114582536B (en) | 2020-11-30 | Automatic overturning system of spent fuel storage grillwork for nuclear island fuel plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011376669.2A CN114582536B (en) | 2020-11-30 | Automatic overturning system of spent fuel storage grillwork for nuclear island fuel plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114582536A CN114582536A (en) | 2022-06-03 |
| CN114582536B true CN114582536B (en) | 2024-07-16 |
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| CN114582537A (en) * | 2020-11-30 | 2022-06-03 | 中国核工业二三建设有限公司 | Automatic moving system of spent fuel storage grillwork for nuclear island fuel plant |
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|---|---|---|---|---|
| CN102231290A (en) * | 2011-06-01 | 2011-11-02 | 清华大学 | Material taking apparatus and material taking method of high temperature gas cooled reactor |
| CN106976827A (en) * | 2017-03-31 | 2017-07-25 | 中国核工业二三建设有限公司 | Nuclear power station module turning device |
| CN114582537A (en) * | 2020-11-30 | 2022-06-03 | 中国核工业二三建设有限公司 | Automatic moving system of spent fuel storage grillwork for nuclear island fuel plant |
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| Title |
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| 核岛燃料贮存格架自动引入系统的应用研究;刘琪琳;李云峰;潘国祥;杨泽宇;朱全友;中国设备工程;20211231(010);全文 * |
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