CN213303666U - Modular control equipment for safety level of nuclear power station - Google Patents
Modular control equipment for safety level of nuclear power station Download PDFInfo
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- CN213303666U CN213303666U CN202022111442.7U CN202022111442U CN213303666U CN 213303666 U CN213303666 U CN 213303666U CN 202022111442 U CN202022111442 U CN 202022111442U CN 213303666 U CN213303666 U CN 213303666U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a modular control device of nuclear power station safety level, which comprises a bottom plate module, a communication module, a control module and an output module; the bottom plate module comprises a communication bus and a plurality of connectors; the communication module, the control module and the output module are electrically connected through a communication bus, and the communication bus is used for transmitting communication signals and control signals; the connectors at least comprise a first connector, a second connector and a third connector; the communication bus is connected with the communication module through a first connector, and the first connector and the communication module are fixed through screws; the communication bus is connected with the control module through a second connector, and the second connector and the control module are fixed through screws; the communication bus is connected with the output module through a third connector, and the third connector and the output module are fixed through screws; the control module is used for outputting control signals to external equipment. The utility model discloses can promote whole hardware platform's maintainability and configurability.
Description
Technical Field
The utility model relates to a nuclear power station instrument control system control equipment technical field, in particular to modular control equipment of nuclear power station security level.
Background
The nuclear power plant instrument control system needs to control related equipment according to the overall condition of the power station, and the equipment itself also needs to be controlled according to state feedback of the equipment itself and the surrounding of the equipment. Because the number of devices to be controlled is large, a distributed control method is often adopted, and the logic, threshold value and the like of the devices are processed by the optimal control module corresponding to the devices. Therefore, the larger the installed capacity of the power plant, the larger the number of devices used, and the larger the types of devices. The preferred control module should also have high configurability and high maintainability. The input/output points of general field devices are connected to the same bottom plate module, the bottom plate module is distributed with the input/output points of different devices, and corresponding sockets are reserved for plugging each control module.
However, for a large number of different devices, the input/output points may have large differences, the conventional backplane module is difficult to perfectly adapt to the field signal, which causes a certain waste, and the backplane module is inconvenient to replace after being determined. In addition, the optimal control module applied to the large nuclear power station also meets the requirements of earthquake resistance, electromagnetic compatibility and abnormal environment and the reliability and completeness of safety level equipment of the nuclear power station.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide one in order to overcome prior art's defect.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
the utility model provides a modular control device of nuclear power station safety level, which comprises a bottom plate module, a communication module, a control module and an output module;
the bottom plate module comprises a communication bus and a plurality of connectors;
the communication module, the control module and the output module are electrically connected through a communication bus, and the communication bus is used for transmitting communication signals and control signals;
the connectors at least comprise a first connector, a second connector and a third connector;
the communication bus is connected with the communication module through a first connector, and the first connector and the communication module are fixed through screws; the communication bus is connected with the control module through a second connector, and the second connector and the control module are fixed through screws; the communication bus is connected with the output module through a third connector, and the third connector and the output module are fixed through screws;
the control module is used for outputting control signals to external equipment.
Preferably, the number of the communication modules is two, and the two communication modules are respectively arranged at two ends of the bottom plate module.
Preferably, the bottom board module further comprises a power bus, the power bus is electrically connected with the communication module, the control module and the output module respectively, and the bottom board module provides electric energy for the communication module, the control module and the output module through the power bus respectively.
Preferably, the backplane module further comprises a field input terminal, an output terminal, an input power terminal, and an output power terminal.
Preferably, the control module comprises a control board card, a first status indicator lamp, a local button and a key switch.
Preferably, the output module includes an output board card, a second status indicator light, and an address coding switch.
Preferably, the modular control equipment for the safety level of the nuclear power plant further comprises an aluminum alloy shell, wherein a plurality of stand columns are arranged inside the aluminum alloy shell and used for fixing the printed circuit board.
Preferably, the backplane module is provided with a ground terminal having a ground resistance of less than 0.1 ohm.
Preferably, the connector comprises a D-SUB connector.
Preferably, the communication bus comprises an RS422 communication bus.
The utility model discloses an actively advance the effect and lie in: the utility model discloses the modularization controlgear of nuclear power station security level provides a novel modular structure scheme, the better input \ output interface who agrees with the scene on the one hand to promote whole hardware platform's maintainability and configurability, thereby reduce the rack quantity saving cost of whole system. On one hand, the requirements of safe shutdown earthquake, electromagnetic shielding and heat dissipation in high-temperature environment of the nuclear power station are also ensured to be met.
Drawings
Fig. 1 is a schematic structural diagram of an alternative embodiment of a modular control apparatus for a nuclear power plant safety class according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another alternative embodiment of the modular control apparatus for a nuclear power plant safety class according to a preferred embodiment of the present invention.
Detailed Description
The present invention will be more clearly and completely described with reference to the following preferred embodiments and the accompanying drawings.
The embodiment provides a modular control device for a safety level of a nuclear power plant. Fig. 1 shows the structure of an alternative embodiment of a modular control device of the nuclear power plant safety class. Fig. 2 shows the structure of another alternative embodiment of a modular control device of the nuclear power plant safety class. The modular control equipment for the safety level of the nuclear power station comprises a bottom plate module 1, a communication module 2, a control module 3 and an output module 4; the bottom plate module 1 comprises a communication bus and a plurality of connectors; the communication module 2, the control module 3 and the output module 4 are electrically connected through a communication bus, and the communication bus is used for transmitting communication signals and control signals; the connectors at least comprise a first connector, a second connector and a third connector; the communication bus is connected with the communication module 2 through a first connector, and the first connector is fixed with the communication module 2 through a screw; the communication bus is connected with the control module 3 through a second connector, and the second connector is fixed with the control module 3 through a screw; the communication bus is connected with the output module 4 through a third connector, and the third connector is fixed with the output module 4 through a screw; the control module 3 is used for outputting control signals to external equipment.
The number of the communication modules 2 is two, and the two communication modules 2 are respectively arranged at two ends of the bottom plate module 1. The floor module 1 is further provided with an installation part 103, and the installation part 103 can be used for installing the modular control equipment of the nuclear power plant safety level at a target position, such as the inside of a cabinet.
The bottom plate module 1 further comprises a power bus, the power bus is respectively electrically connected with the communication module 2, the control module 3 and the output module 4, and the bottom plate module 1 respectively provides electric energy for the communication module 2, the control module 3 and the output module 4 through the power bus. The specific arrangement of the power bus and the communication bus can be realized by those skilled in the art, and will not be described herein.
The backplane module 1 further comprises a number of terminals 101, which terminals 101 comprise field input terminals, output terminals, input power terminals, output power terminals.
The control module 3 comprises a control board card, a first status indicator lamp 303, a local button 302 and a key switch 301.
The output module 4 comprises an output board card, a second status indicator lamp 402 and an address coding switch 401.
The modular control equipment for the safety level of the nuclear power station further comprises an aluminum alloy shell 12, wherein a plurality of stand columns (not shown in the figure) are arranged inside the aluminum alloy shell 12 and used for fixing the printed circuit board. The specific arrangement of the pillars inside the aluminum alloy housing 12 and the specific structure for fixing the printed circuit board can be realized by those skilled in the art, and will not be described herein.
The backplane module 1 is provided with a ground terminal having a ground resistance of less than 0.1 ohm. The connector includes a D-SUB connector 102. The communication bus comprises an RS422 communication bus.
In specific implementation, the embodiment provides a modular control device of a nuclear power plant safety level, which is composed of 4 major parts: the device comprises a split type bottom plate module 1, a control module 3, an output module 4 and a communication module 2. The bottom plate modules 1 are connected through standard connectors, each bottom plate module 1 is fixed on the cabinet through the installation part 103, and bolt fixing structures capable of being operated in the front are arranged at two ends of each bottom plate module 1. And each bottom plate module 1 is provided with a respective control module 3 and an output module 4 which are fixed on the bottom plate module 1 by bolts. All module shells all adopt sheet metal construction, and the border adopts the profile of tooth to agree with, and the bolt is locked. By obtaining the bolt torque, the structural strength of the individual modules can be obtained. All-metal shell is installed in the rack and is connected to ground through a plurality of mounting in back. The floor module 1 forms an integral floor module 1 by mutual fixation of the modules at the front side and fixation of the back side relative to the cabinet. Two ends of the bottom plate module 1 are respectively provided with 2 communication modules 2, and the interfaces are the same as the bottom plate module 1. The communication modules 2 are connected through shielding type prefabricated cables, and signal connection between the bottom plate modules 1 is achieved. The bottom board module 1 can be configured to any length, the bottom board module 1 can customize the input/output interface according to different field requirements, and any one module and the bottom board thereof can be replaced under the condition of not influencing the wiring of other optimized control modules 3, so that the module can be customized according to the field requirements to adapt to different contact requirements, voltage requirements, power requirements and the like. Whole structural design scheme mutually supports, and the modular design, structural strength is high, easily maintains and changes.
According to the modular control equipment for the safety level of the nuclear power station, the minimum unit configured by the optimal control module 3 is reduced, so that the optimal control module 3 and other functional cabinets can be simultaneously configured in a single cabinet, the number of the cabinets of the whole instrument control system of the power station can be reduced, and the cost is saved. In addition, the modular control equipment of the nuclear power station safety level can also be applied to the fields with limited space for arranging cabinets, such as small-sized plants, cabins and the like. Meanwhile, the modularized control equipment of the safety level of the nuclear power station passes the following tests and can keep complete functions and complete structure: 1) electromagnetic immunity test and electromagnetic interference test; 2) fanless heat dissipation operation at high temperature and storage at abnormal high and low temperatures; 3) high-frequency sinusoidal vibration; 4) performing a three-axis direction reaction spectrum test of a safe shutdown earthquake of a primary nuclear power station; 5) a baseline seismic test response spectrum test was run five times.
All modules in the modular control equipment of the nuclear power station safety level can be detached, each module can be configured into various models, can be selected and matched according to requirements, and can be simultaneously applied to one project. According to the design requirements of large nuclear power plants, this current scheme can support the following functional requirements:
1) the modularized control equipment of each nuclear power station safety level forms an RS485 network through communication cascade, and supports 8 groups of RS422 communication buses;
2) the modular control equipment of the nuclear power station safety level comprises 26 paths of field input signal interfaces and 11 paths of output signal interfaces in total;
3) the indicating lamp is used for inputting signals, outputting signals, communicating states and grounding faults;
4) the local control and the remote control provide a selection switch;
5) the local control provides a man-machine operation interface;
6) optimizing logic processing;
7) providing a power supply and an interface for field switching value output;
8) address setting of the control module 3.
The shells of all modules in the modular control equipment of the nuclear power station safety level are made of aluminum alloy materials, and surface oxidation sand blasting is carried out. The modular control equipment of the nuclear power station safety level is rectangular as a whole, and the strength of the column reinforcing structure is arranged every 100mm (millimeter) inside the modular control equipment and is used for fixing the printed circuit board.
The inside of the bottom board module 1 not only contains communication and power buses, but also is responsible for transmitting signals between the control module 3 and the output module 4 on a single module. The bottom plate module 1 can support two modes of installation of a DIN guide rail (a guide rail) and an electric plate (a screw); all the fixing pieces in the mounting mode are made of metal materials; and at least one 6-mm grounding terminal is reserved, and the grounding resistance of the grounding terminal is less than 0.1 ohm.
The bottom plate module 1 can be split by taking one control module 3 as a unit, and a plurality of detachable fixing pieces are arranged on the back surfaces of each bottom plate module 1 and the communication module 2, so that the modules can be directly fixed on the cabinet. In addition, a protruding fixing pile and an inwards concave fixing groove are arranged at the joint of each bottom plate module 1 and each communication module 2, the fixing piles are matched with the fixing grooves and fastened through screws, and the tension between the modules is guaranteed. The operation of the screw is positioned on the front surface of the modular control equipment of the safety level of the nuclear power station, and the maintenance is easy. This modular control equipment of nuclear power station security level is inside to connect bus signal through standard connector, because every bottom plate module 1 is the rectangle, itself possesses certain structural strength, and just two positive mountings are located the both sides of module to through the fixing of positive screw fastening and back mounting, make single bottom plate module 1 possess stronger bending resistance. The multi-surface fixing structure also ensures the torsion resistance and the cutting resistance of the bottom plate module 1, thereby ensuring that a plurality of bottom plate modules 1 form a reliable bottom plate module 1 and meeting the requirement of earthquake resistance. All field input and output signals are connected to the bottom plate module 1, different bottom plates can be configured according to different requirements of field equipment, and the bottom plate modules 1 with different configurations can also form one bottom plate module 1.
The length of a single bottom plate module 1 can be freely customized according to the space of a common cabinet (the power supply capacity and the chip carrying capacity meet the size requirement of the common cabinet), communication modules 2 are installed at two ends of the bottom plate module 1, and signal connection between the bottom plate modules 1 is realized through prefabricated cables. The connector may be a standard D-SUB connector or a custom connector. Because the inside power bus that contains of bottom plate module 1, and each bottom plate module 1 inlet wire protection configuration is the same, consequently single bottom plate module 1 only need wherein arbitrary bottom plate module 1 power supply can.
The communication modules 2 are arranged at two ends of the bottom plate module 1, and the communication modules 2 are provided with prefabricated cable interfaces. The first communication module 2 is used for connecting communication signals of an instrument control system and is also used for realizing communication connection between buses of the two bottom plate modules 1. The communication module 2 may provide a special configuration in which the communication bus termination resistors are configured and the power ground of the module system is connected to the single-point resistor-capacitor of the chassis ground. The communication module 2 of the configuration is installed at the end of the cascade bus of the backplane module 1. The communication module 2 does not need to carry out bus signal switching.
Each bottom plate module 1 is provided with a corresponding control module 3 and an output module 4, and is fixed on the bottom plate module 1 through a plurality of screws. The structures and circuits of the control module 3 and the output module 4 are isolated from each other, so that accidents or faults of the output module 4 are prevented from being transmitted to the control module 3.
The control module 3 is responsible for the processing of the input signals and the processing of the preferred logic. Each module is provided with an indicator light and a button switch for controlling the field device on site, and the control module 3 corresponds to the output module 4 and the field device. Their address information is configured by a mechanical address encoder, and if they do not match, the control module 3 will immediately recognize and report an error.
The safety-level modular control equipment for the nuclear power station has high reliability, good electromagnetic compatibility and anti-seismic performance, and meets the requirements of the identification test of large nuclear power stations.
The modular control equipment of the nuclear power station safety level in the embodiment comprises all component modules including the bottom plate module, and the single equipment is used as a unit, so that the expandability and configurability of the whole hardware platform are improved, the requirements of field equipment are better adapted, and the cost is saved. The modules are fastened in an all-dimensional manner, so that the interconnection reliability of the modules is guaranteed, and the requirements of safe shutdown earthquake and electromagnetic shielding of the nuclear power station are met.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. A modularized control device for the safety level of a nuclear power station is characterized by comprising a bottom plate module, a communication module, a control module and an output module;
the bottom plate module comprises a communication bus and a plurality of connectors;
the communication module, the control module and the output module are electrically connected through the communication bus, and the communication bus is used for transmitting communication signals and control signals;
the connectors at least comprise a first connector, a second connector and a third connector;
the communication bus is connected with the communication module through the first connector, and the first connector and the communication module are fixed through screws; the communication bus is connected with the control module through the second connector, and the second connector and the control module are fixed through screws; the communication bus is connected with the output module through the third connector, and the third connector and the output module are fixed through screws;
the control module is used for outputting control signals to external equipment.
2. The modular control device for the safety level of the nuclear power plant as claimed in claim 1, wherein the number of the communication modules is two, and the two communication modules are respectively arranged at two ends of the bottom plate module.
3. The modular control apparatus for nuclear power plant safety of claim 1, wherein the backplane module further comprises a power bus, the power bus electrically connected to the communication module, the control module and the output module, respectively, and the backplane module provides power to the communication module, the control module and the output module, respectively, via the power bus.
4. The modular control apparatus for nuclear power plant safety levels of claim 3, wherein said backplane module further comprises field input terminals, output terminals, input power terminals, output power terminals.
5. The modular control apparatus of nuclear power plant security level of claim 4, wherein the control module includes a control board, a first status indicator light, a local button, a key switch.
6. The modular control apparatus for nuclear power plant safety of claim 5, wherein the output module comprises an output board, a second status indicator light, and an address code switch.
7. The modular control equipment of nuclear power plant safety level of claim 6, further comprising an aluminum alloy casing, wherein a plurality of columns are arranged inside the aluminum alloy casing, and the columns are used for fixing the printed circuit board.
8. The modular control apparatus for nuclear power plant safety level of claim 7, wherein the backplane module is provided with a ground terminal having a ground resistance of less than 0.1 ohms.
9. The modular control apparatus for nuclear power plant safety level of claim 1, wherein the connector comprises a D-SUB connector.
10. The modular control apparatus for nuclear power plant safety level of claim 1, wherein the communication bus comprises an RS422 communication bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022111442.7U CN213303666U (en) | 2020-09-23 | 2020-09-23 | Modular control equipment for safety level of nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022111442.7U CN213303666U (en) | 2020-09-23 | 2020-09-23 | Modular control equipment for safety level of nuclear power station |
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| CN213303666U true CN213303666U (en) | 2021-05-28 |
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| CN202022111442.7U Active CN213303666U (en) | 2020-09-23 | 2020-09-23 | Modular control equipment for safety level of nuclear power station |
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