CN114582536A - Automatic turnover system of spent fuel storage grillwork for nuclear island fuel plant - Google Patents
Automatic turnover system of spent fuel storage grillwork for nuclear island fuel plant Download PDFInfo
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- CN114582536A CN114582536A CN202011376669.2A CN202011376669A CN114582536A CN 114582536 A CN114582536 A CN 114582536A CN 202011376669 A CN202011376669 A CN 202011376669A CN 114582536 A CN114582536 A CN 114582536A
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- 230000007306 turnover Effects 0.000 title claims abstract description 138
- 239000002915 spent fuel radioactive waste Substances 0.000 title claims abstract description 35
- 238000003860 storage Methods 0.000 title claims abstract description 34
- 239000000446 fuel Substances 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013519 translation Methods 0.000 description 3
- 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
- 230000009467 reduction Effects 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
- 230000015572 biosynthetic process Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 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
- 230000001681 protective effect Effects 0.000 description 1
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/06—Magazines for holding fuel elements or control elements
- G21C19/065—Rotatable magazines
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/06—Magazines for holding fuel elements or control elements
- G21C19/07—Storage racks; Storage pools
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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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 turnover system for a spent fuel storage grillwork for a nuclear island fuel plant comprises an electric walking platform, a turnover mechanism and a power system. The invention has the following remarkable effects: the system carries a tilter with a large 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, and realizes automatic overturning of the grillwork by 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 framework for a nuclear island fuel plant.
Background
The conventional spent fuel storage grillwork for the nuclear island fuel plant is a standard fixed structure grillwork, and needs to be turned over in the air based on the structural characteristics of the spent fuel storage grillwork of the nuclear island fuel plant and the limitation of the environment of the fuel plant in the process of transporting spent fuel, and the adverse factors are as follows:
1. the turnover of the grillwork is realized in the air by matching the crane with the chain block, so that the center of gravity of the grillwork is higher and has no supporting point, and the tilting and the toppling of the grillwork caused by unstable center of gravity are easy to occur, so that equipment is damaged and personnel are injured; a great quality safety risk exists in the turning process;
2. because the total weight of the grillage and the L-shaped overturning bracket is close to the rated load of the crane, the crane often exceeds the rated load of the crane due to shaking in the process of overturning in the air, so that the alarm and parking of the crane are caused, the grillage is suspended in the air, and the crane is placed and overturned again after being recovered by a professional, so that the operation is repeated, the operation difficulty is high, a large amount 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 provides an automatic turnover system of a spent fuel storage grillwork for a nuclear island fuel plant, aiming at the defects of the prior art.
The invention is realized by the following steps: an automatic turnover system for a spent fuel storage grillwork for a nuclear island fuel plant comprises an electric walking platform, a turnover mechanism and a power system.
The automatic turnover system for the spent fuel storage grillwork for the nuclear island fuel plant comprises a turnover mechanism structure frame, a driving part and a supporting structure.
The automatic turnover system for the spent fuel storage grillwork for the nuclear island fuel plant comprises a turnover structure body and a gear ring, wherein a driving part comprises a motor reducer and a pinion, torque is transmitted to the pinion through the driving part, the pinion and the large gear ring are meshed through a gear to transmit the torque to the turnover structure body, and therefore the turnover structure body is driven to turn over for 90 degrees.
The automatic turnover system for the spent fuel storage grillwork for the nuclear island fuel plant is characterized in that the turnover mechanism adopts a bilateral gear transmission mode, a three-phase asynchronous motor is used as a power source and drives pinions at two sides to rotate after being decelerated by a speed reducer with a certain speed ratio, the pinions at two sides drive large gear rings at two sides for transmission, the large gear rings at two sides and a turnover main body frame are fixed together through bolts, and then a turnover main body is driven to turn over by 90 degrees.
The automatic turnover system for the spent fuel storage grillwork for the nuclear island fuel plant comprises the electric traveling platform, a platform support and the following components,
the control system comprises: the Siemens PLC S7-200 SMART programmable controller ST60 is taken as a core CPU, and 2 blocks of 16-path digital quantity input modules, 1 block of 8-path analog quantity input modules and 1 block of 4-path analog quantity output modules are expanded; 2 traction servo controllers for driving the steering wheel of the trolley to move forward and backward; 4 steering servo controllers for driving the bogie to steer; 1 frequency converter for driving the platform turnover motor; is provided with 12 paths of 4 steering wheel in-place position sensors; 4-channel analog quantity rotation angle sensor; an in-place sensor for 2-way turnover; 1 industrial-grade handheld wireless station; 1 wired remote controller; 1, displaying information on a 10-inch human-computer interface touch liquid crystal screen; an 8-way obstacle ultrasonic radar detection sensor; 48 lead-acid power batteries and 2 inverters are used as power supplies;
a PLC controller: the remote control device 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 a command to drive the electric transmission device to operate or stop. Monitoring the discharging condition of the battery and prompting charging acousto-optic alarm; the turnover mechanism is driven to operate, and the electric walking platform and the turnover mechanism are locked.
The automatic turnover system for the spent fuel storage grillwork for the nuclear island fuel plant further comprises a safety system, specifically,
safety limiting: 4 guide limiting devices are arranged on the outer side of a circular track plate of a main body of the turnover mechanism, so that the track is prevented from deviating along the track direction and is kept stable in the turnover process of the grillwork;
audible and visual alarm: the four corners of the electric walking platform are provided with sound and light alarm devices, and the electric walking platform can emit alarm lamps to flash and alarm sounds during the running process so as to prevent workers from mistakenly entering the operation area to cause collision accidents;
emergency braking: emergency brake buttons are arranged at the four corners and the middle position in the length direction of the electric walking platform, and the walking platform is stopped unconditionally by pressing the emergency brake buttons under special conditions;
safe edge contact: the electric walking platform is provided with an anti-collision safety touch edge, and when the safety touch edge collides with a foreign object, the walking platform stops immediately and gives out obstacle alarm;
a radar detector: the head and the tail of the electric walking platform truck are respectively provided with 1 set of inlet obstacle ultrasonic radar detection sensors;
operation locking: the driving output is interlocked with the turnover mechanism program, so that the locking between the electric walking platform and the turnover mechanism is realized.
The automatic turnover system for the spent fuel storage grillwork for the nuclear island fuel plant is characterized in that the power system comprises a rechargeable storage battery pack and a manual charging station.
The invention has the following remarkable effects: the system carries a tilter with a large 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, and realizes automatic overturning of the grillwork by operating a wireless industrial remote controller or a wire control handle.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an automatic turnover system of a spent fuel storage grid for a nuclear island fuel plant;
FIG. 2 is a schematic view before inversion;
FIG. 3 is a schematic view in inversion;
FIG. 4 is a schematic diagram after being turned over;
FIG. 5 is a system component logic diagram;
FIG. 6 is a system overview;
FIG. 7 is a schematic view of the turnover mechanism;
FIG. 8 is a schematic view of the 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
FIG. 11 is a schematic view of the back structure of FIG. 10;
fig. 12 is a schematic view of an intermediate idler device;
fig. 13 is a schematic view of an end idler device;
FIG. 14 is a schematic view of the driving part of the turnover mechanism
FIG. 15 is a schematic view of the back-facing structure of FIG. 14;
FIG. 16 is an enlarged view of a portion of the driving mechanism of the turnover mechanism;
FIG. 17 is a schematic view of a driving structure of the turnover mechanism;
FIG. 18 is a schematic structural view of a mobile platform;
FIG. 19 is a schematic view of the structure of the position limiting device;
FIG. 20 is a schematic view of the back-facing configuration of FIG. 19;
FIG. 21 is a schematic view of a limit switch assembly;
fig. 22 is a schematic view of a guide and stop device.
Wherein: 1 mobile platform, 2 turnover mechanisms, 3 fuel grillage needing turnover, 4 turnover mechanism driving parts, 5 turnover mechanism carrier roller devices, 6 turnover structure frames, 7 grillage protection plates, 8 limiting devices, 9 power large gears, 10 turnover main body circular track plates, 11 turnover main body guide plates, 12 turnover mechanism carrier roller devices, 13 end carrier rollers, 14 middle carrier rollers, 15, driving parts, 16 power gear rings, 17 main transmission shafts, 18 transmission small gears, 19 speed reducing motors, 20 auxiliary supports, 21 integral frames, 22 hoisting devices, 23 safety radars, 24 safety contact edges, 25 emergency stop buttons, 26 observation holes, 27 charging sockets, 28 cabinets, 29 human-computer interaction interfaces, 30 front limiting supports, 31 rear limiting supports, 32 guide limiting devices, 33 limiting switches and 34 limiting supports.
Detailed Description
An automatic turnover system for a spent fuel storage grillwork for a nuclear island fuel plant comprises an electric walking platform and a turnover mechanism.
1. Turnover mechanism
The turnover mechanism mainly 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, and the turnover mechanism driving part comprises a motor reducer, a pinion and the like. The torque is transmitted to the small gear through the driving part, the small gear and the large gear ring transmit the torque through gear engagement, and the torque is transmitted to the turnover structure frame, so that the turnover structure frame is driven to turn over for 90 degrees
The turnover mechanism on the automatic turnover system of the spent fuel storage grillwork adopts a bilateral gear transmission mode, a three-phase asynchronous motor is used as a power source and drives pinions on two sides to rotate after being decelerated by a speed reducer with a certain speed ratio, the pinions on two sides drive large gear rings on two sides of 120 degrees to transmit, and the large gear rings on two sides and a turnover main body frame are fixed together through bolts so as to drive a turnover main body to turn over by 90 degrees.
The motion of the turnover mechanism loaded on the vehicle body is controlled in 3 modes by operating a wireless or wired industrial remote controller or a human-computer interface. The turnover mechanism can rotate 90 degrees and turn over from a horizontal position to a vertical position. Meanwhile, the safety locking function is completed through a program, and when the turnover mechanism reaches a vertical position, the system automatically stops turnover through position information fed back by in-place sensors arranged on two sides of the turnover mechanism so as to protect stable hoisting of the storage grillwork. The turnover machine can send a driving instruction through the handheld remote controller only after the turnover mechanism on the vehicle body is horizontally and stably stopped in place. All turning actions are completed by a hand-held remote controller, and the whole process of transportation can be completed by one person.
Scheme and structure characteristics of turnover mechanism
The turnover mechanism is driven by a mechanical gear, and 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, and the transmission shaft is processed by a high-quality forging. Ensure the turnover to be stable and reliable. The motor is slowly started in a rotating mode, and the motor with the band-type brake can ensure that the position is locked under the condition of sudden power failure, so that the safety and reliability are greatly enhanced.
The turnover mechanism has the following structural characteristics:
a. and the eight carrier roller mechanisms ensure the stable operation of the equipment.
b. The mechanical gear type turnover system can not be reversed.
c. The carrier roller and the overturning base are both provided with a safety outer cover, so that the operation safety of personnel is ensured.
d. The carrier roller inner bearings adopt tapered roller bearings used in pairs, and can adapt to various complex stress conditions with uneven radial and transverse stress.
e. The industrial speed reducer is adopted, so that the noise is low, the torque is large, and the operation is more stable.
f. The motor has the self-locking function of parking brake, can be stopped at any position, and the turnover body is locked in situ, thereby being safe and reliable.
g. The electrical system is equipped with a frequency converter and has overcurrent, overload, short circuit and open-phase protection functions.
h. The electric appliance part adopts a protective circuit breaker, an overload circuit breaker and an overcurrent protection contactor, so that potential safety hazards caused by overload are effectively prevented.
i. The alarm device is instructed in the area, effectively reminds staff's operational safety.
j. And multiple limit switches and mechanical protection devices are adopted to determine the operation safety.
k. The motor of the device is started slowly, stopped slowly and operated stably and quickly. The phenomenon of sudden collapse can not occur.
And an overcurrent protection device is arranged, so that the turnover machine exceeds the maximum turnover weight, the automatic power-off and shutdown protection can be realized, and the motor cannot be damaged.
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 reducer, a transmission pinion, a main transmission shaft and the like. The torque is transmitted to the small gear through the driving part, the small gear and the large gear ring transmit the torque through gear engagement, and the torque is transmitted to the turnover structure frame, so that the turnover structure frame is driven to turn over for 90 degrees. Two limit switches are respectively arranged on the limit supports at the upright position and the horizontal position of the turnover mechanism, so that the turnover mechanism can decelerate when approaching to the limit position, stably reaches the limit position, and is safe and reliable.
Control system
The electrical control part of the automatic spent fuel storage grid turnover system mainly takes a Siemens PLC S7-200 SMART programmable controller ST60 as a core CPU, and 2 blocks of 16-path digital quantity input modules, 1 block of 8-path analog quantity input modules and 1 block of 4-path analog quantity output modules are expanded; 2 traction servo controllers for driving the steering wheel of the trolley to move forward and backward; 4 steering servo controllers for driving the bogie to steer; 1 frequency converter for driving the platform turnover motor; is provided with 12 paths of 4 steering wheel in-place position sensors; 4-channel analog quantity rotation angle sensor; an in-place sensor for 2-way turnover; 1 industrial-grade handheld wireless station; 1 wired remote controller; 1, displaying information on a 10-inch human-computer interface touch liquid crystal screen; an 8-way obstacle ultrasonic radar detection sensor; 48 lead-acid power batteries and 2 inverters are used as power supplies.
PLC controller
The Siemens S7 series PLC is adopted, has strong expansion capability and strong module system, and supports the communication functions of wireless serial ports and wireless Ethernet.
Powerful, compact structure and economy. The Siemens SIMATIC S7 universal controller can save installation space and has the characteristic of modular design. A large number of modules can be used to expand a centralized system or a system that creates a decentralized architecture, depending on the task at hand, and to promote cost-effective economics of spare parts.
And the PLC is used for completing tasks of receiving all instruction operations of an operator through a wired or wireless remote controller and driving the touch screen to monitor the running state in the normal operation process. And monitoring a protection command in the safety system in real time, and outputting a command to drive the electric transmission to run or stop. And monitoring the discharge condition of the battery and prompting charging acousto-optic alarm. The driving output turnover mechanism operates to realize the locking between the electric walking platform and the turnover mechanism.
Human-machine conversation
The man-machine conversation is realized by adopting three modes, an operator can respectively input instruction information through keys of a handheld wired or wireless remote controller, keys of an operation table and keys in the running section of a touch screen, the running parameters of the automatic turnover system are set through the touch screen, and the running parameters comprise the running speed, the running direction, the battery protection value and the like, and the contents of the running speed, the running direction, the in-place state of a turnover machine, the battery voltage state, the running current of a monitoring motor, the running state of a servo motor, the fault alarm, the fault code display and the like of the electric walking platform are monitored and displayed.
Control mode
The electric walking platform and the turnover mechanism are provided with manual control (wired/wireless remote controllers) and a manual starting mechanism, and when the electric walking platform and the turnover mechanism are switched to a manual starting state, the electric walking platform and the turnover mechanism cannot be automatically started, cannot automatically execute an operation command, and need to execute related actions according to remote control instructions of field operators.
2. Security system
Safety limit
Be equipped with 4 direction stop device in the circular track board outside of tilting mechanism main part, ensure that the track can not appear skew along the orbit direction to and remain stable in the framework upset in-process, be equipped with 1 limit switch respectively on 4 limit support in front and back in addition, through the position information of installing the limit switch (the sensor that targets in place) feedback in the tilting mechanism both sides behind tilting mechanism arrival vertical position or horizontal position, the upset of system automatic shutdown, the security of assurance equipment operation in-process.
Sound and light alarm
Audible and visual alarm devices are arranged at four corners of the electric walking platform, and the electric walking platform can emit alarm lamps to flicker and give out alarm sounds in the running process so as to prevent workers from mistakenly entering a running area to cause collision accidents.
Emergency brake
The emergency brake buttons are arranged at the four corners and the middle position in the long direction of the electric walking platform, and the walking platform can be stopped unconditionally by pressing the buttons under special conditions. The button is arranged at the four corners of the vehicle body and in the middle of the vehicle body in the longitudinal direction.
Safety contact edge
The electric walking platform is provided with an anti-collision safe touch edge, when the safe touch edge collides with a foreign object, the walking platform stops at once and gives out an obstacle alarm, and after the foreign object moves away from the air route, the walking platform can continue to operate only by manually pressing a confirmation button for safety.
Radar detector
The electric walking platform carrier comprises a carrier head and a carrier tail, wherein 1 sleeve of entry barrier ultrasonic radar detection sensors are respectively arranged at the head and the tail of the carrier head and serve as a barrier avoidance protection mechanism, when barriers exist continuously in the traveling direction, the walking platform operates in a speed reduction mode, if the barriers are not removed within 1 second, the electric walking platform stops immediately and gives out a barrier alarm, after the barriers disappear, the electric walking platform is automatically started, and the work before the parking is continuously executed.
Operation lock
The driving output is interlocked with the turnover mechanism program, so that the locking between the electric walking platform and the turnover mechanism is realized. The grid frame turnover mechanism has the limiting protection function after 90-degree turnover, ensures that the grid frame turnover position is accurate, and can stop at any position in the turnover process of the grid frame and realize self-locking during parking. The automatic locking protection function of sudden power failure and parking, the grillwork keeps stable and immovable, and is safe and reliable.
3. Power system
Battery and charging
The automatic turnover 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 one-use, has long charging and discharging service life, stable voltage characteristic, quick charging and long service time of single charging. In addition, the vehicle-mounted should also be equipped with manual charging station, and charging wire input end length is at least 5M, and output end length is at least 5M, is equipped with standard industry plug and battery butt joint.
The invention creates the improvement innovation point that:
the spent fuel storage framework automatic turnover 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 consisting of a safety sensor and the like, realizes automatic turnover of the framework by operating a wireless industrial remote controller or a wire control handle, improves the working efficiency while reducing the input of manpower and material resources, reduces the quality safety risk and realizes mechanical installation automation.
The working flow of the device is roughly as follows:
the equipment is a component for turning a fuel grillwork by 90 degrees horizontally to form a vertical state, and the specific working flow is as follows:
place fuel grillage at tilting mechanism A face through self-propelled hoist, carry on tilting mechanism through civil engineering expansion district by electronic walking platform truck and transport it to under 0 meters lifting hole of KX factory building, drive pinion through transmission system (motor, reduction gear) and rotate, pinion and bull gear meshing, it is rotatory to drive tilting mechanism, when tilting mechanism is rotatory 90, fuel grillage is vertical by horizontal upset formation, thereby make fuel grillage place the upset by the horizontal on A plane and become the vertical of B plane and place, then hang it from tilting mechanism through nuclear island KX factory building +28.710 m's supplementary crane, just be located the spentnuclear fuel pond of KX factory building.
The rated load capacity of the equipment is 15t, the overturning stroke is 90 degrees, and the running time is 60-80 s. The motor in the transmission system has self-locking function, and can realize self-locking of parking at any position.
The specific operation is as follows:
Claims (7)
1. The utility model provides an automatic upset system of spentnuclear fuel storage framework for nuclear island fuel factory building which characterized in that: comprises an electric walking platform, a turnover mechanism and a power system.
2. The automatic turnover system of the spent fuel storage grillwork for the nuclear island fuel plant according to claim 1, characterized in that: the turnover mechanism comprises a turnover mechanism structure frame, a driving part and a supporting structure.
3. The automatic turnover system of the spent fuel storage grillwork for the nuclear island fuel plant as claimed in claim 2, wherein: the turnover mechanism structure frame comprises a turnover structure body and a gear ring, the driving part comprises a motor speed reducer, a 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 turnover structure frame, so that the turnover structure frame is driven to turn over for 90 degrees.
4. The automatic turnover system of the spent fuel storage grillwork for the nuclear island fuel plant of claim 3, wherein: the turnover mechanism adopts a bilateral gear transmission form, a three-phase asynchronous motor is used as a power source and drives pinions on two sides to rotate after being decelerated by a speed reducer with a certain speed ratio, the pinions on two sides drive large gear rings on two sides for transmission, and the large gear rings on two sides and a turnover main body frame are fixed together through bolts so as to drive a turnover main body to turn over by 90 degrees.
5. The automatic turnover system of the spent fuel storage grillwork for the nuclear island fuel plant of claim 4, wherein: the electric walking platform comprises a platform bracket and the following components,
the control system comprises: the Siemens PLC S7-200 SMART programmable controller ST60 is taken as a core CPU, and 2 blocks of 16-path digital quantity input modules, 1 block of 8-path analog quantity input modules and 1 block of 4-path analog quantity output modules are expanded; 2 traction servo controllers for driving the steering wheel of the trolley to move forward and backward; 4 steering servo controllers for driving the bogie to steer; 1 frequency converter for driving the platform turnover motor; is provided with 12 paths of 4 steering wheel in-place position sensors; 4-channel analog quantity rotation angle sensor; an in-place sensor for 2-way turnover; 1 industrial-grade handheld wireless station; 1 wired remote controller; 1, displaying information on a 10-inch human-computer interface touch liquid crystal screen; an 8-way obstacle ultrasonic radar detection sensor; 48 lead-acid power batteries and 2 inverters are used as power supplies;
a PLC controller: the remote control device 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 a command to drive the electric transmission device to operate or stop. Monitoring the discharging condition of the battery and prompting charging acousto-optic alarm; the driving output turnover mechanism operates to realize the locking between the electric walking platform and the turnover mechanism.
6. The automatic turnover system of the spent fuel storage grillwork for the nuclear island fuel plant of claim 5, wherein: the automatic turnover system for the spent fuel storage grillwork for the nuclear island fuel plant also comprises a safety system, in particular,
safety limiting: 4 guide limiting devices are arranged on the outer side of a circular track plate of a main body of the turnover mechanism, so that the track is prevented from deviating along the track direction and is kept stable in the turnover process of the grillwork;
audible and visual alarm: the four corners of the electric walking platform are provided with sound and light alarm devices, and the electric walking platform can emit alarm lamps to flash and alarm sounds during the running process so as to prevent workers from mistakenly entering the operation area to cause collision accidents;
emergency braking: emergency brake buttons are arranged at the four corners and the middle position in the length direction of the electric walking platform, and the walking platform is stopped unconditionally by pressing the emergency brake buttons under special conditions;
safe edge contact: the electric walking platform is provided with an anti-collision safety touch edge, and when the safety touch edge collides with a foreign object, the walking platform stops immediately and gives an obstacle alarm;
a radar detector: the head and the tail of the electric walking platform truck are respectively provided with 1 set of inlet obstacle ultrasonic radar detection sensors;
operation locking: the driving output is interlocked with the turnover mechanism program, so that the locking between the electric walking platform and the turnover mechanism is realized.
7. The automatic turnover system of the spent fuel storage grid for the nuclear island fuel plant according to claim 1, characterized in that: the power system is a rechargeable storage battery pack and a manual charging station.
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| CN202011376669.2A CN114582536B (en) | 2020-11-30 | 2020-11-30 | Automatic overturning system of spent fuel storage grillwork for nuclear island fuel plant |
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