CN220933640U - Nuclear power plant crane and nuclear fuel loading and unloading maintenance training device - Google Patents

Abstract

The utility model relates to a nuclear power plant crane and a nuclear fuel loading and unloading maintenance training device, which comprises the following components: the device comprises an electric cabinet, a transmission mechanism connected with the electric cabinet and an operation terminal; the electrical cabinet includes: the PLC cabinet is connected with the incoming line cabinet and the motor driving cabinet respectively; the transmission mechanism comprises: the device comprises a fixing device, a driving motor, a speed reducer, a simulation rotary drum and a height limiter; the driving motor, the speed reducer, the simulation rotating drum and the height limiter are sequentially connected, and the driving motor, the simulation rotating drum and the height limiter are arranged on the fixing device; the operation terminal comprises: the device comprises an operation platform, a switching device arranged on the operation platform, a key switch and an emergency stop button. The maintenance training device can simulate a crane and nuclear fuel loading and unloading equipment, can meet the maintenance training requirement, avoid the problem of equipment damage caused by field equipment training, and solve the problem of no field equipment for training.

Description

Nuclear power plant crane and nuclear fuel loading and unloading maintenance training device

Technical Field

The utility model relates to the technical field of nuclear power maintenance training, in particular to a crane for a nuclear power plant and a nuclear fuel loading and unloading maintenance training device.

Background

The number of the nuclear power plant cranes and the nuclear fuel loading and unloading equipment is large, the distribution is wide, the equipment is not limited to single brands and series of equipment, and the equipment is mainly used for loading and unloading nuclear fuel, hoisting important equipment and tools and the like, and is an important equipment of a nuclear power plant.

Aiming at the training of maintenance, repair and management personnel of the crane and the nuclear fuel loading and unloading equipment, the traditional training is mostly theoretical training, and the actual operation training is carried out by using field equipment, however, equipment after the nuclear power manufacturer is often subjected to engineering debugging and test verification, and related program logic, parameter setting and the like are in an optimal state. Training operations are performed on such equipment in hot standby, which may be in use at any time, in a manner that is prone to risk of damaging or creating safety hazards to the equipment. And, the nuclear power plant part nuclear fuel loading and unloading equipment is located in the nuclear island reactor factory building, and only can enter during overhaul. While the work associated with these devices during overhaul is often in a critical path, no time window is used for training with field devices.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a nuclear power plant crane and a nuclear fuel loading and unloading maintenance training device.

The technical scheme adopted for solving the technical problems is as follows: a nuclear power plant crane and nuclear fuel handling maintenance training apparatus is constructed, comprising: the electric cabinet, the transmission mechanism connected with the electric cabinet and the operation terminal connected with the electric cabinet;

The electrical cabinet includes: the device comprises an incoming line cabinet provided with a three-phase circuit breaker and a three-phase power indicator lamp, a motor driving cabinet provided with a plurality of frequency converters and a PLC cabinet, wherein the PLC cabinet is respectively connected with the incoming line cabinet and the motor driving cabinet;

The transmission mechanism comprises: the device comprises a fixing device, a driving motor, a speed reducer, a simulation rotary drum and a height limiter; the driving motor, the speed reducer, the simulation rotating drum and the height limiter are sequentially connected, and the driving motor, the simulation rotating drum and the height limiter are arranged on the fixing device;

The operation terminal includes: the device comprises an operation platform, a switching device arranged on the operation platform, a key switch and an emergency stop button.

In the nuclear power plant crane and the nuclear fuel loading and unloading maintenance training device, the simulation rotary drum is made of stainless steel and is hollow, the simulation rotary drum is a double-output-shaft rotary drum, the first end of the simulation rotary drum is connected with the speed reducer, and the second end of the simulation rotary drum is connected with the height limiter.

In the crane for nuclear power plant and the nuclear fuel loading and unloading maintenance training device of the utility model, the transmission mechanism further comprises: an absolute value encoder is connected with the height limiter.

In the crane for nuclear power plant and the nuclear fuel loading and unloading maintenance training device of the utility model, the incoming line cabinet comprises: a first cabinet; the three-phase circuit breaker and the three-phase power indicator lamp are arranged in the first cabinet body; the inlet and outlet wires of the inlet wire cabinet are arranged in a mode of 3 x 25+2 x 16 three-phase five-wire system.

In the crane for nuclear power plant and the nuclear fuel loading and unloading maintenance training device of the utility model, the motor driving cabinet comprises: a second cabinet; the frequency converters are arranged in the second cabinet body; the motor driving cabinet further includes: the contactor is arranged in the second cabinet body; each frequency converter is provided with two contactors, and the two contactors are respectively arranged at the input end and the output end of the frequency converter.

In the crane for nuclear power plant and the nuclear fuel loading and unloading maintenance training device of the utility model, the motor driving cabinet further comprises: and the fan is arranged in the second cabinet body and positioned at the cabinet top of the second cabinet body.

In the crane for nuclear power plant and the nuclear fuel loading and unloading maintenance training device of the present utility model, the operation terminal further includes: and the plurality of indicator lamps are arranged on the operating platform and lift the main adjusting operator.

In the nuclear power plant crane and the nuclear fuel assembly and disassembly maintenance training device according to the present utility model, the switching device includes: the touch screen and the plurality of change-over switches are arranged on the operation platform; the plurality of switches includes: the device comprises a plurality of transmission selection switches, a communication selection switch, an interlocking/single-mechanism operation selection switch, a main control selection switch and a brake opening switch, wherein the transmission selection switches, the communication selection switches, the interlocking/single-mechanism operation selection switch, the main control selection switch and the brake opening switch are all arranged on an operation platform.

In the crane for nuclear power plant and the nuclear fuel loading and unloading maintenance training device of the utility model, the electrical cabinet further comprises: backup power supply loops of different voltage classes are provided.

In the crane for nuclear power plant and the nuclear fuel loading and unloading maintenance training device of the utility model, the PLC cabinet comprises: the device comprises a third cabinet body, a plurality of PLC controllers and a main controller, wherein the PLC controllers and the main controller are installed in the third cabinet body;

The main controller is respectively connected with the plurality of PLC controllers, and the plurality of PLC controllers are correspondingly connected with the plurality of frequency converters.

The crane and the nuclear fuel loading and unloading maintenance training device for the nuclear power plant have the following beneficial effects: comprising the following steps: the device comprises an electric cabinet, a transmission mechanism connected with the electric cabinet and an operation terminal; the electrical cabinet includes: the PLC cabinet is connected with the incoming line cabinet and the motor driving cabinet respectively; the transmission mechanism comprises: the device comprises a fixing device, a driving motor, a speed reducer, a simulation rotary drum and a height limiter; the driving motor, the speed reducer, the simulation rotating drum and the height limiter are sequentially connected, and the driving motor, the simulation rotating drum and the height limiter are arranged on the fixing device; the operation terminal comprises: the device comprises an operation platform, a switching device arranged on the operation platform, a key switch and an emergency stop button. The maintenance training device can simulate a crane and nuclear fuel loading and unloading equipment, can meet the maintenance training requirement, avoid the problem of equipment damage caused by field equipment training, and solve the problem of no field equipment for training.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic block diagram of a nuclear power plant crane and nuclear fuel handling equipment maintenance training apparatus provided by the present utility model;

FIG. 2 is an internal layout of the incoming line cabinet provided by the utility model;

FIG. 3 is a schematic diagram of a main circuit of the frequency converter provided by the utility model;

FIG. 4 is an internal layout of the motor drive cabinet provided by the present utility model;

FIG. 5 is a schematic diagram of a transmission mechanism according to the present utility model;

FIG. 6 is an internal layout of the PLC cabinet provided by the utility model;

fig. 7 is a panel layout diagram of an operation platform of the operation terminal provided by the present utility model;

FIG. 8 is a schematic diagram of a backup power loop provided by the present utility model;

FIG. 9 is a network diagram of a Siemens control system provided by the present utility model;

FIG. 10 is a network diagram of a Schrad PLC and SEW frequency converter control system provided by the utility model;

fig. 11 is a schematic diagram of a switching operation provided by the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

FIG. 1 illustrates one embodiment of a nuclear power plant crane and nuclear fuel handling maintenance training apparatus provided by the present utility model. The nuclear power plant crane and the nuclear fuel loading and unloading maintenance training device can meet the personnel training requirements of the nuclear power plant, and maintenance and training management of personnel of the nuclear power plant can be completed without using field equipment.

Specifically, as shown in fig. 1, the nuclear power plant crane and the nuclear fuel loading and unloading maintenance training device comprise: an electrical cabinet 100, a transmission mechanism 200 connected to the electrical cabinet 100, and an operation terminal 300 connected to the electrical cabinet 100.

The electrical cabinet 100 includes: the three-phase circuit breaker and three-phase power indicator lamp installation inlet wire cabinet 101, install the motor drive cabinet 102 and the PLC cabinet 103 of a plurality of converters, PLC cabinet 103 is with inlet wire cabinet 101, the PLC cabinet 103 that motor drive cabinet 102 is connected respectively.

In this embodiment, the incoming line cabinet 101 includes: a first cabinet; the three-phase circuit breaker and the three-phase power indicator lamp are arranged in the first cabinet body; the incoming and outgoing lines of the incoming line cabinet 101 are arranged in a3 x 25+2 x 16 three-phase five-wire system mode. Specifically, the first cabinet body is made of a cold-rolled steel plate with the depth of 300mm, the protection grade of IP44 and the color of RL7032. Wherein the internal layout of the incoming line cabinet 101 is shown in fig. 2.

In the present embodiment, the motor drive cabinet 102 includes: a second cabinet; the frequency converters are arranged in the second cabinet body; the motor drive cabinet 102 further includes: the contactor is arranged in the second cabinet body; each frequency converter is provided with two contactors, and the two contactors are respectively arranged at the input end and the output end of the frequency converter. Wherein, motor drive cabinet 102 still includes: and the fan is arranged in the second cabinet body and positioned at the cabinet top of the second cabinet body.

Specifically, the second cabinet body is made of a 2mm cold-rolled steel plate, the depth is 600mm, the protection grade is IP44, and the color is RL7032. Similarly, the inlet and outlet lines of the second cabinet body also adopt a 3×25+2×16 three-phase five-line system, and the fan of the cabinet top equipment is AC380V. Alternatively, in this embodiment, the motor driving cabinet 102 is mainly provided with frequency converters of multiple brands and models, such as ABB, ACS800/ABB, ACS880/SEW, MDX61B, and the like, and the main circuit principle thereof is shown in fig. 3. As can be seen from fig. 3, each of the input and output ends of the frequency converters is provided with a contactor (e.g., -KM12A, -KM12AA, -KM12B, -KM12BA, -KM12C, -KM12CA in fig. 3). As shown in fig. 3, when the contactor of the input end and the output end of any frequency converter is closed, the frequency converter works, otherwise, the frequency converter is in a power-off state. Through setting up the contactor respectively at the input and the output of converter, can prevent that the input and the output electric current of converter that is in the running state from being in the input and the output of other non-running converters to protect other non-running converters. Further, in this embodiment, the second cabinet body is further provided with a circuit breaker, a contactor, a fuse, a phase sequence relay, an overhaul socket, a transformer, a three-phase indicator lamp, and other components, and a layout diagram of the three-phase indicator lamp in the cabinet body is shown in fig. 4.

As shown in fig. 5, in the present embodiment, the transmission mechanism 200 includes: a fixing device 208, a driving motor 209, a speed reducer 210, a simulation drum 211, and a height limiter 212; the driving motor 209, the speed reducer 210, the dummy drum 211, and the height limiter 212 are sequentially connected, and the driving motor 209, the dummy drum 211, and the height limiter 212 are disposed on the fixture 208. The transmission 200 also includes an overspeed switch and an incremental encoder. Further, the transmission mechanism 200 further includes: an absolute value encoder 213 is connected to the height limiter 212.

The speed reducer 210 and the incremental encoder are connected to a plurality of frequency converters, and the overspeed switch and the height limiter 212 are connected to the PLC cabinet 103. The type of the speed reducer 210 is SEW R37DRN90S4/XHO, which is a helical gear speed reducer 210, the power is 1.1KW, and the reduction ratio is: 28.73, voltage/frequency: 220V/380V 50hz, an overspeed switch and an incremental encoder are provided on the drive shaft of the drive motor 209. The dummy drum 211 is a stainless steel hollow drum, no rope grooves are provided, and the dummy drum 211 is a double-output shaft drum. Specifically, a first end of the dummy drum 211 is connected to the speed reducer 210, and a second end of the dummy drum 211 is connected to the height limiter 212. Further, in the present embodiment, the height limiter 212 is a lifting height limiter 212, which is QGX-B, and is externally connected with an absolute value encoder 213. The transmission mechanism 200 can simulate the actions of a crane and a nuclear fuel loading and unloading device, and drive an overspeed switch, an incremental encoder, a height limiter 212 and an absolute value encoder 213 to act through shaft connection, so that the simulation of the crane and the nuclear fuel loading and unloading device and the detection of related signals are realized.

In this embodiment, the PLC cabinet 103 includes: the device comprises a third cabinet body, a plurality of PLC controllers and a main controller, wherein the PLC controllers and the main controller are arranged in the third cabinet body; the main controller is respectively connected with a plurality of PLC controllers, and the plurality of PLC controllers are correspondingly connected with a plurality of frequency converters.

Specifically, in this embodiment, the third cabinet body is made of a cold rolled steel sheet with a depth of 600mm, a protection level of IP44 and a color of RL7032, and the top of the cabinet may also be provided with a fan with an AC 380V. In this embodiment, the plurality of PLC controllers are different systems or different models of PLC controllers, for example, in one specific embodiment, mainly includes: siemens 1500 series, S7-300 series, S7-200Smart, AB 1769 series, schneider M340 series. Wherein, the third cabinet body is also internally provided with a relay, a 24V power module, a fuse, a temperature controller and the like, and the internal arrangement of the third cabinet body is shown in figure 6. It should be noted that, the PLC controller adopted in this embodiment is an existing conventional PLC controller, and the existing functions thereof are also used, and the internal program or software thereof is not improved. The specific model and the corresponding connection relationship of the PLC controller and the frequency converter may also be set according to the actual use condition, which is not described in detail.

In this embodiment, the main controller may be an industrial personal computer, or may be a PLC control system, such as the siemens brand S7-200 control system. For those skilled in the art, it is a conventional technical means to use an industrial personal computer or a PLC to output different output signals according to the change of the input signals, and then these output signals drive a switching device such as a relay or a contactor to start, close or switch other devices, which is not described herein.

The operation terminal 300 includes: the device comprises an operation platform, a switching device arranged on the operation platform, a key switch and an emergency stop button. Wherein, this operation terminal 300 also includes: and the plurality of indicator lamps are arranged on the operation platform and lift the main adjusting operator.

In this embodiment, the switching device includes: a touch screen and a plurality of change-over switches arranged on the operation platform. As shown in fig. 7, the plurality of change-over switches includes: the transmission selection switches, the communication selection switches, the interlocking/single-mechanism operation selection switches, the main control selection switches and the brake opening switches are all arranged on the operation platform. The selection of the frequency converter and the PLC can be realized through the touch screen and the plurality of change-over switches, so that the simulation of the crane and the nuclear fuel loading and unloading equipment is realized, and the corresponding communication protocol is selected through the change-over switches. Further, the operating platform is also provided with a key switch, an indicator light and an emergency stop button. The touch screen, the key switch, the indicator light, the emergency stop button and the main control selection switch can simulate specific operation equipment of the crane and the nuclear fuel loading and unloading equipment, so that different brands and series of crane and nuclear fuel loading and unloading equipment are simulated, and maintenance and training requirements of training staff on different brands and series of crane and nuclear fuel loading and unloading equipment are met. In fig. 7, the respective switches and indicator lamps are shown in the following table.

The ACS800 frequency converter is communicated with the S7-1500 controller and the S7-300 controller through a Profibus DP communication protocol; the ACS880 frequency converter is communicated with the S7-1500 controller and the S7-300 controller through a Profibus DP communication protocol and a Profinet communication protocol; the MDX61B frequency converter communicates with the M340 controller and the AB-1769 controller through an Ethernet communication protocol.

Further, the corresponding connection between the PLC controllers of the various models and the frequency converter 110 of the various models is a communication connection, the communication connection includes one or more communication protocols, and the switching device is further used for selecting the communication protocol.

Specifically, taking the PLC controller and the frequency converter of the brand as examples, the ACS800 frequency converter communicates with the S7-1500 controller and the S7-300 controller through Profibus DP communication protocol; the ACS880 frequency converter is communicated with the S7-1500 control system controller and the S7-300 controller through a Profibus DP communication protocol and a Profinet communication protocol; the MDX61B frequency converter communicates with the M340 controller and the AB-1769 controller through an Ethernet communication protocol. If the selected frequency converter is an ACS880 frequency converter, the frequency converter supports two communication protocols, the switching device is required to select a proper communication protocol, and the main controller adopts a corresponding communication protocol according to the corresponding frequency converter and the corresponding PLC device which are gated by the knob switch.

The maintenance training device provided by the embodiment combines various types of frequency converters and various types of PLC controllers, adopts various communication protocols such as Profibus DP/Profinet and the like, and is convenient for students to grasp the communication principles and communication fault processing of the control system and the transmission unit by combining the parameter setting of the frequency converters, the PLC communication logic program segments, the hardware network configuration and the like.

Further, as shown in fig. 8, the electrical cabinet 100 further includes: backup power supply loops of different voltage classes are provided. In particular, the standby power supplies can provide power supplies with 380V, 220V, 24V and other different voltage levels, and can be used for spare part preparation, spare part detection and the like. Such as the parameter introduction of the frequency converter, the introduction of a PLC program, the test of whether spare parts can work normally, etc.

In this embodiment, the maintenance training device includes 2 sets of communication networks, one set is a Siemens PLC and ABB frequency converter communication network, and the other set is a Schneider PLC/AB PLC and SEW frequency converter communication network. After the communication network is arranged, the appropriate network can be switched to communicate according to the touch screen and the change-over switch.

Siemens PLC communicates with the ABB inverter including S7-300 communicates with ACS800 and ACS880 and S7-1500 communicates with ACS800 and ACS 880. Since ACS800 (booster unit) does not support Profinet communication, the communication manner is mainly divided into the following cases, specifically, see fig. 9, a network diagram of the siemens control system:

S7-300- -ACS800 Profibus DP communication; s7-300- -ACS880 Profibus DP communication; s7-300- -ACS880 Profinet communication; s7-1500- -ACS800 Profibus DP communication; s7-1500- -ACS880 Profibus DP communication; s7-1500- -ACS880 Profinet communication.

The schneider PLC/AB PLC and SEW frequency converter are communicated by Ethernet communication, see specifically fig. 10, which shows a network diagram of the schneider PLC/AB PLC and SEW frequency converter control system:

The transmission mechanism 200 and the basic electrical equipment part of the equipment are commonly used, S7-200 Smart is used as a main CPU for control, the disassembly and the connection are not needed, the corresponding transmission unit and the next-stage PLC control system (PLC controller) can be selected according to the requirements by pressing the change-over switch of the operation platform, and the like, so that maintenance personnel can be trained in a targeted manner.

The operation platform is provided with a change-over switch, such as ABB/SEW transmission selection, ACS800/ACS880 transmission selection, S7-1500/S7-300 CPU communication selection and AB 1769/M340 CPU selection, the change-over signal is connected to the main CPU S7-200 Smart, and the power supply of AB-1769, M340 CPU, S7-1500CPU and S7-300 CPU is controlled by the main CPU; and controlling the input and output switching-on of the ACS800 frequency converter, the input and output switching-on of the ACS880 frequency converter, the input and output switching-on of the SEW frequency converter, the selection of an ACS800 frequency converter encoder, the selection of an ACS880 frequency converter encoder and the selection of an SEW frequency converter encoder. The switching operation principle is shown in fig. 11 below.

Meanwhile, an ACS800 frequency converter incoming line contactor, an ACS800 frequency converter output contactor, an ACS880 frequency converter incoming line contactor, an ACS880 frequency converter output contactor, an SEW frequency converter incoming line contactor, an SEW frequency converter output contactor, a lifting motor incoming line breaker, an emergency stop, an overspeed switch, an upper stop limit, fault reset, a power switch-on signal and a power switch-off signal are also connected to a main CPU to serve as control condition input. The upper stop limit, the upper speed reduction limit, the lower stop limit, the brake limit, the lifting descending, the lifting accelerating 1, the lifting accelerating 2, the module power signal, the linkage single-mechanism operation signal, the brake opening, the brake incoming line breaker, the brake contactor and the encoder signal are connected into a corresponding next-stage PLC control system according to the selection result.

The maintenance training device almost comprises all electric elements and part of mechanical parts used by a crane and nuclear fuel loading and unloading equipment of a nuclear power plant, such as encoders, breakers, contactors, relays, limit switches, buttons, indicator lamps, frequency converters, PLC modules, wiring terminals, motors, master controllers, brakes and the like, and provides an actual operation platform for new staff to know the electric elements, know the working principles of the electric elements, learn the disassembly and assembly of the electric elements, and master and judge and detect the quality of the electric elements.

Through the maintenance training device, various faults similar to the existing equipment can be simulated, such as failure of a frequency converter caused by loosening of an encoder coupling, failure of a circuit caused by loosening of wiring and damage of components, loss of a PLC (programmable logic controller) program, incorrect parameter setting of the frequency converter and the like, a test platform closest to on-site electrical fault processing can be provided for training staff, and how to quickly check, position and process the electrical faults is practiced.

Through the maintenance training device, the maintenance training device does not need to carry out disassembling and wiring operation, and only relies on simple switching of a switch and a touch screen, so that personnel can learn how to operate hardware and software of main transmission units and control systems of various brands and numbers, such as Siemens S7-200/S7-300/S7-1500, M340, AB 1639, ACS800, ACS880, SEW MDX61B and the like; meanwhile, the use of various software matched with hardware is mastered, such as STEP 7-MicroWIN SMART、SIMATIC Manager、TIA Portal、RSLogix 5000、Unity Pro、Drive Monitor、Drive Composer entry、MontionStudio、WINCC and the like; mastering software programming, parameter debugging, software monitoring and the like, and improving fault handling capacity and spare part replacement capacity.

Through this maintenance training device, combined a plurality of brands, a plurality of model PLC and drive unit, adopted Profibus DP/Profinet etc. multiple communication mode, the learner combines converter parameter setting, PLC communication logic program section, hardware network configuration etc. conveniently to master communication principle and communication fault handling of control system and drive unit.

The maintenance training device combines the design principles of the crane and the nuclear fuel loading and unloading equipment in design, almost covers various electric elements required by the device in configuration, and is beneficial to training staff to further know the design principles of the crane and the nuclear fuel loading and unloading equipment.

The maintenance training device for the crane and the fuel loading and unloading equipment of the nuclear power plant solves the defects of the traditional personnel culture mode, meets the requirements of training personnel on the whole training content, different training breadth and different training depth of the crane and the nuclear fuel loading and unloading equipment, avoids the safety risk and hidden trouble caused by training on the running equipment, and avoids the problems of high outgoing training cost, low efficiency and low participation degree; meanwhile, training contents can be purposefully arranged according to different people, training time can be planned autonomously, and the like, so that the problem of conflict between training and on-site work is solved; meanwhile, the system can also be used as a platform for preparing spare parts, and the processing efficiency of field equipment faults is improved.

After the device is used for training, the expenditure of personnel going out for training can be greatly reduced. The calculation is carried out according to the current training cost, 1 person needs to comprehensively master a control system and a transmission device related to a crane and nuclear fuel loading and unloading equipment, at least needs to take part in 12 times of training, the cost of training, accommodation cost, travel cost and the like is approximately 36 tens of thousands of yuan, the calculation is carried out according to 60 persons related to a power plant, and the related training cost is approximately 2160 tens of thousands of yuan. Therefore, the maintenance training device is used for training, the cost is only thirty times that of the outgoing training, and a great deal of cost is saved.

After the maintenance training device is used, personnel training is not required to be carried out on the field equipment, and the potential risks of damaging equipment and affecting safety caused by using the field equipment training are avoided. Personnel training need not be performed on the field device and training need not be scheduled according to the field work window. Meanwhile, personnel do not need to rely on outgoing training, training time and windows can be freely arranged according to actual workload of the site, the possibility of collision between outgoing training and site work is reduced, and orderly development of the site work is guaranteed.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same according to the content of the present utility model, and not to limit the scope of the present utility model. All equivalent changes and modifications made with the scope of the claims should be covered by the claims.

Claims (10)

1. A nuclear power plant crane and nuclear fuel handling maintenance training device, comprising: the electric cabinet, the transmission mechanism connected with the electric cabinet and the operation terminal connected with the electric cabinet;

The electrical cabinet includes: the device comprises an incoming line cabinet provided with a three-phase circuit breaker and a three-phase power indicator lamp, a motor driving cabinet provided with a plurality of frequency converters and a PLC cabinet, wherein the PLC cabinet is respectively connected with the incoming line cabinet and the motor driving cabinet;

The transmission mechanism comprises: the device comprises a fixing device, a driving motor, a speed reducer, a simulation rotary drum and a height limiter; the driving motor, the speed reducer, the simulation rotating drum and the height limiter are sequentially connected, and the driving motor, the simulation rotating drum and the height limiter are arranged on the fixing device;

The operation terminal includes: the device comprises an operation platform, a switching device arranged on the operation platform, a key switch and an emergency stop button.

2. The nuclear power plant crane and nuclear fuel handling maintenance training device of claim 1, wherein the simulated rotating drum is a stainless steel hollow rotating drum, the simulated rotating drum is a double-output shaft rotating drum, a first end of the simulated rotating drum is connected with the speed reducer, and a second end of the simulated rotating drum is connected with the height limiter.

3. The nuclear power plant crane and nuclear fuel handling maintenance training apparatus of claim 1, wherein said transmission mechanism further comprises: an absolute value encoder is connected with the height limiter.

4. The nuclear power plant crane and nuclear fuel handling maintenance training apparatus of claim 1 wherein said incoming line cabinet comprises: a first cabinet; the three-phase circuit breaker and the three-phase power indicator lamp are arranged in the first cabinet body; the inlet and outlet wires of the inlet wire cabinet are arranged in a mode of 3 x 25+2 x 16 three-phase five-wire system.

5. The nuclear power plant crane and nuclear fuel handling maintenance training apparatus of claim 1, wherein the motor drive cabinet comprises: a second cabinet; the frequency converters are arranged in the second cabinet body; the motor driving cabinet further includes: the contactor is arranged in the second cabinet body; each frequency converter is provided with two contactors, and the two contactors are respectively arranged at the input end and the output end of the frequency converter.

6. The nuclear power plant crane and nuclear fuel handling maintenance training apparatus of claim 5, wherein said motor drive cabinet further comprises: and the fan is arranged in the second cabinet body and positioned at the cabinet top of the second cabinet body.

7. The nuclear power plant crane and nuclear fuel handling maintenance training apparatus of claim 1, wherein said operator terminal further comprises: and the plurality of indicator lamps are arranged on the operating platform and lift the main adjusting operator.

8. The nuclear power plant crane and nuclear fuel handling maintenance training apparatus of claim 1, wherein the switching apparatus comprises: the touch screen and the plurality of change-over switches are arranged on the operation platform; the plurality of switches includes: the device comprises a plurality of transmission selection switches, a communication selection switch, an interlocking/single-mechanism operation selection switch, a main control selection switch and a brake opening switch, wherein the transmission selection switches, the communication selection switches, the interlocking/single-mechanism operation selection switch, the main control selection switch and the brake opening switch are all arranged on an operation platform.

9. The nuclear power plant crane and nuclear fuel handling maintenance training apparatus of claim 1, wherein the electrical cabinet further comprises: backup power supply loops of different voltage classes are provided.

10. The nuclear power plant crane and nuclear fuel handling maintenance training apparatus of claim 1, wherein the PLC cabinet comprises: the device comprises a third cabinet body, a plurality of PLC controllers and a main controller, wherein the PLC controllers and the main controller are installed in the third cabinet body;

The main controller is respectively connected with the plurality of PLC controllers, and the plurality of PLC controllers are correspondingly connected with the plurality of frequency converters.