Power distribution device applied to nuclear power station

Abstract

The embodiment of the invention relates to the technical field of nuclear power equipment, in particular to a power distribution device applied to a nuclear power station, which comprises an electrical element, an interaction part and a part of power supply which are arranged in a shell, the power supply is used for supplying power to the electrical element and the interaction part; the electrical element is used for supplying power to the electric equipment, and is used for receiving a control signal of the interaction part so as to control the operation state of the electric equipment and detect the operation state information of the electric equipment; the interaction part is used for receiving the control instruction and generating a control signal so as to control the electrical element. According to the embodiment of the invention, the operation state of the electric equipment is controlled through the electrical elements, the operation state information of the electric equipment is detected, the miniaturization, modularization and model design of the power distribution device is realized, the number and size of the elements in the power distribution device are reduced, and the communication with the distributed control system is realized through the interaction part. The intelligent configuration of electrical elements is facilitated, the intelligent degree of the power distribution device is improved, and the safety and stability of the power distribution device are ensured.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of nuclear power equipment, and specifically to a power distribution device used in a nuclear power plant. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] A fast breeder reactor (hereinafter referred to as fast reactor) nuclear power plant is a nuclear power plant that converts the heat energy released by the chain fission reaction caused by fast neutrons into electrical energy. It can use the nuclear fission chain reaction rich in fissionable nuclides to release huge heat energy, and then transfer the heat energy to high-temperature and high-pressure steam through the circulation of coolant, thereby driving the steam turbine generator to generate electricity.

[0004] In fast reactor nuclear power plants, the mainstream power distribution method is centralized distribution, and the main power supply device is the switch cabinet. However, the current low-voltage power distribution method has many shortcomings. Summary of the invention

[0005] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0006] An embodiment of the present application provides a power distribution device applied to a nuclear power plant, which includes: a shell, a power supply, electrical components and an interactive component; the electrical components, the interactive component and part of the power supply are arranged inside the shell; the power supply is respectively connected to the electrical components and the interactive component, and is used to supply power to the electrical components and the interactive component; the electrical components are connected to the electrical equipment of the nuclear power plant, and are used to supply power to the electrical equipment, and the electrical components are also connected to the interactive component, and are used to receive control signals from the interactive component, so as to control the operating status of the electrical equipment according to the control signals and detect the operating status information of the electrical equipment; the interactive component is connected to a distributed control system in the nuclear power plant, and is used to receive control instructions sent by the distributed control system, and generate control signals based on the control instructions, so as to control the electrical components using the control signals.

[0007] The embodiments of the present application, by configuring the power distribution device to include a structure of electrical components and interactive components, facilitate the control of the operating status of the electrical equipment and the detection of the operating status information of the electrical equipment through the electrical components, so as to realize the miniaturized, modularized and standardized design of the power distribution device, reduce the number of components in the power distribution device and the volume of the power distribution device, and at the same time, since the volume of the power distribution device is small, it is convenient to set it around the electrical equipment, thereby reducing interference in the signal transmission process, and communicating with the upstream distributed control system through the interactive components, is conducive to the intelligent configuration of the electrical components, thereby improving the intelligence level of the power distribution device and ensuring the safety and stability of the power distribution device.

[0008] These and other advantages of the present application will become more apparent through the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to further illustrate the above and other advantages and features of the present application, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. The accompanying drawings together with the following detailed description are included in this specification and form a part of this specification. Elements with the same function and structure are represented by the same reference numerals. It should be understood that these drawings only describe typical examples of the present application and should not be regarded as limiting the scope of the present application.

[0010] Figure 1 is a schematic structural diagram of a power distribution device according to an embodiment of the present application;

[0011] Figure 2 yes Figure 1 A schematic structural diagram of the power distribution device shown in another angle;

[0012] Figure 3 It is a structural schematic diagram of a power distribution device according to another embodiment of the present application.

[0013] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.

[0014] Description of reference numerals:

[0015] 10. Shell; 11. Main body; 12. Connection terminal; 20. Power supply; 21. Power supply component; 22. Switch component; 30. Electrical component; 40. Interaction component; 41. Acquisition module; 42. Output module; 51. Electric heater; 52. Motor; 53. Valve; 60. Distributed control system. DETAILED DESCRIPTION

[0016] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0017] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0018] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in this application should have the common meanings understood by persons with ordinary skills in the field to which this application belongs.

[0019] In the description of the embodiments of the present application, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0020] In the related art, the mainstream power distribution method adopted by the low-voltage electrical system in the fast reactor nuclear power plant is centralized power supply. The low-voltage switch cabinet is placed in the power distribution room, and the cables are connected to the electrical equipment to achieve the purpose of powering the electrical equipment. However, this power distribution method has many problems. For example, due to the particularity of the reactor type and process system of the fast reactor nuclear power plant, there are many power supply and distribution circuits for conventional transmission loads and electric heating loads, which may cause the power distribution room in the nuclear island to occupy a large area. For another example, due to the lack of comprehensive intelligent monitoring capabilities, it is impossible to provide data support for the intelligent research of fast reactor nuclear power plants. For another example, there are many cables from the power distribution room in the nuclear island to the location of the electrical equipment, and the distance is long. The signal transmission is carried out by hard wiring, which is easy to be interfered.

[0021] In response to the above technical problems, an embodiment of the present application provides a power distribution device applied to a nuclear power plant. Figure 1 is a schematic structural diagram of a power distribution device according to an embodiment of the present application, Figure 2 yes Figure 1 The structural diagram of the power distribution device from another angle is shown in FIG. Figure 1 and Figure 2 As shown, the power distribution device includes: a housing 10 , a power source 20 , an electrical component 30 and an interactive component 40 .

[0022] The electrical element 30 , the interactive element 40 and a portion of the power supply 20 are disposed inside the housing 10 .

[0023] The power supply 20 is connected to the electrical component 30 and the interactive component 40 respectively, and is used to supply power to the electrical component 30 and the interactive component 40 .

[0024] The electrical component 30 is connected to the electrical equipment of the nuclear power plant for supplying power to the electrical equipment, and is also connected to the interactive component 40 for receiving control signals from the interactive component 40 to control the operating status of the electrical equipment according to the control signals and detect operating status information of the electrical equipment.

[0025] The interactive component 40 is connected to a distributed control system (DCS) in the nuclear power plant, and is used to receive control instructions sent by the distributed control system, and generate control signals based on the control instructions, so as to control the electrical components 30 using the control signals.

[0026] The embodiment of the present application, by configuring the power distribution device to include an electrical component 30 and an interactive component 40, is advantageous for controlling the operating status of the electrical equipment and detecting the operating status information of the electrical equipment through the electrical component 30, so as to realize a miniaturized, modularized and standardized design of the power distribution device, reduce the number of components in the power distribution device and the volume of the power distribution device, and at the same time, since the volume of the power distribution device is small, it is convenient to set it around the electrical equipment, thereby reducing interference in the signal transmission process, and communicating with the upstream distributed control system through the interactive component 40 is advantageous for intelligent configuration of the electrical component 30, thereby improving the intelligence level of the power distribution device and ensuring the safety and stability of the power distribution device.

[0027] In some embodiments, the electrical component 30 is an integrated electrical component.

[0028] In some embodiments, the power distribution device further includes a communication component, and the housing 10, the power source 20, the electrical component 30 and the interactive component 40 may be connected via the communication component so as to utilize the communication component to transmit signals between the two connected components.

[0029] In some embodiments, the communication element comprises a cable.

[0030] In some embodiments, the interactive component 40 is connected to a distributed control system in a nuclear power plant via a bus cable.

[0031] In some embodiments, the shell 10 includes a main body 11 and a connecting terminal 12; the electrical component 30, the interactive component 40 and a part of the power supply 20 are arranged inside the main body 11; the connecting terminal 12 is arranged on the main body 11, and is used to connect with the electrical component 30 and the electrical equipment respectively, so that the electrical component 30 is connected to the electrical equipment of the nuclear power plant.

[0032] In the embodiment of the present application, by providing a connection terminal 12 on the body 11 , the purpose of connecting the electrical component 30 inside the body 11 with the electrical equipment outside the body 11 can be achieved.

[0033] In some embodiments, the connection terminal 12 is an outlet terminal.

[0034] In such an embodiment, the electrical component 30 is connected to one end of the outlet terminal through a cable, and the other end of the outlet terminal is connected to the electrical device through a cable, thereby connecting the electrical component 30 to the outlet terminal, wherein the outlet terminal plays a role of switching.

[0035] In some embodiments, the electrical component 30 is electrically connected to the electrical device through the connection terminal 12 .

[0036] In some embodiments, the shell 10 also includes a seal for sealing the main body 11 and the connecting terminal 12 to improve the protection level of the main body 11, thereby increasing the dust and water resistance level of the main body 11 to meet the use under harsh environmental conditions such as high temperature and dust in nuclear power plants, thereby improving the reliability and stability of the distribution device.

[0037] In such an embodiment, the seal is a gland.

[0038] In some embodiments, the body 11 is made of a thermally conductive material to improve the heat dissipation performance of the body 11 .

[0039] In such an embodiment, the body 11 is made of a novel high-strength, high-thermal-conductivity composite material.

[0040] In some embodiments, the electrical component 30 is disposed close to the housing 10 to increase heat dissipation of the electrical component 30 .

[0041] In such an embodiment, the electrical components 30 are arranged close to the body 11 to avoid problems such as high operating temperature and insufficient insulation strength of the power distribution device due to the compact arrangement of the electrical components 30 .

[0042] In some embodiments, the body 11 is made of a metal material with heat-conducting function to prevent electromagnetic interference.

[0043] In some embodiments, the electrical component 30 includes a control module and a detection module, wherein the control module is also connected to a distributed control system; the control module is connected to the electrical equipment and is used to control the on and off of the electrical equipment, and to control the operating parameters of the electrical equipment when the electrical equipment is running; the detection module is used to detect operating status information and feed the operating status information back to the control module; wherein the control module is also used to output the operating status information to the distributed control system.

[0044] The embodiment of the present application configures the electrical component 30 to include a control module and a detection module, and utilizes the control module to control the on and off of the electrical equipment and the operating parameters of the electrical equipment, thereby facilitating the purpose of remotely controlling the electrical equipment. The detection module is utilized to detect the operating status information of the electrical equipment and feed it back to the control module to monitor the operating status of the electrical equipment, thereby further ensuring the safety and stability of the power distribution device.

[0045] In some embodiments, the control module can control the power on or off of the electrical device, and can also be used to control the operating state of the electrical device.

[0046] In such an embodiment, if the electrical device is a motor, the control module can control the motor to rotate forward or reverse, control the speed of the motor, etc.

[0047] In some embodiments, the detection module can be used to detect the operation time of the feeder loop, the fault alarm information of the electrical equipment, the current information of the electrical equipment, etc.

[0048] In some embodiments, the interactive component 40 includes an acquisition module 41 and an output module 42; the acquisition module 41 is used to acquire the operating status information of the electrical equipment and send the acquired operating status information to the output module 42; the output module 42 is used to receive the operating status information and send the operating status information to the distributed control system, so that the distributed control system generates control instructions based on the operating status information.

[0049] The embodiment of the present application sends the collected operating status information of the electrical equipment to the output module 42 through the acquisition module 41, and then uses the output module 42 to send the operating status information to the distributed control system, so that the distributed control system generates control instructions. In this way, the operation of the electrical equipment can be automatically controlled according to the current operating status information of the electrical equipment, so as to further improve the intelligence level of the distribution device.

[0050] In some embodiments, the acquisition module 41 is a local IO module.

[0051] In some embodiments, the output module 42 includes an output submodule and a display submodule; the output submodule is connected to the distributed control system and the display submodule respectively, for receiving operating status information and sending the operating status information to the distributed control system and the display submodule; the display submodule is used to display the operating status information.

[0052] The embodiment of the present application sends the operating status information of the electrical equipment to the display submodule through the output submodule, and uses the display submodule to display it, so that the operator can check the operating status of the electrical equipment at any time to further ensure the safety and stability of the power distribution device.

[0053] In some embodiments, the display submodule is also connected to the control module for receiving operation instructions from the user and sending the operation instructions to the control module; the control module is also used to control the on and off of the electrical equipment according to the operation instructions.

[0054] The embodiment of the present application receives the user's operation instructions through the display submodule to control the on and off of the electrical equipment according to the operation instructions, which is highly interactive and convenient.

[0055] In some embodiments, an input control is provided on the display submodule, and an operator can input an operation instruction through the input control in the display submodule, for example, to open or close a valve, so as to realize the switch control of the valve.

[0056] In some embodiments, the power supply 20 includes a power supply 21 and a switch 22; the power supply 21 is respectively connected to the electrical component 30 and the interactive component 40 via the switch 22, and is used to supply power to the electrical component 30 and the interactive component 40; the switch 22 is used to control the on / off of the power supply circuit between the power supply 21 and the electrical component 30 and the interactive component 40.

[0057] The embodiment of the present application supplies power to the electrical component 30 and the interactive component 40 through the power supply component 21, and a switch component 22 is provided between the power supply component 21 and the electrical component 30, the interactive component 40. When the power distribution device needs to be maintained or repaired, the switch component 22 can be used to quickly cut off the power supply circuit between the power supply component 21 and the electrical component 30, the interactive component 40 to ensure the safety of the operator. At the same time, it can also cooperate with the electrical component 30 for protection, improve the short-circuit breaking capacity of the power distribution device, and thus extend the service life of the power distribution device.

[0058] In some embodiments, the switch element 22 is an incoming line circuit breaker.

[0059] In some embodiments, the power supply 21 is a 24V DC power supply module.

[0060] In some embodiments, the electrical component 30 and the switch element 22 are connected in the form of a busbar adapter to facilitate installation and maintenance.

[0061] The working process of the power distribution device in the embodiment of the present application is explained below based on the embodiment.

[0062] Figure 3 is a schematic structural diagram of a power distribution device according to another embodiment of the present application, such as Figure 3As shown, the power supply 21 is used to supply power to the electrical components 30 and the interactive components 40 in the power distribution device, and the switch component 22 is used to control the on-off of the power supply circuit between the power supply 21 and the electrical components 30 and the interactive components 40. The electrical equipment in the nuclear power plant includes an electric heater 51, a motor 52 and a valve 53, which are respectively connected to the electrical components 30 in the power distribution device through cables, and the electrical components 30 and the interactive components 40 are connected through cables to send the operating status information of the electric heater 51, the motor 52 and the valve 53 to the interactive component 40, or control the electric heater 51, the motor 52 and the valve 53 based on the control signal generated by the interactive component 40, wherein the interactive component 40 is connected to the upstream distributed control system 60 through a bus cable to receive a control signal generated based on the control instruction of the distributed control system 60 and send it to the electrical component 30.

[0063] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0064] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A power distribution device used in a nuclear power plant, characterized in that: It includes: Housing, power supply, electrical components and interactive parts; The electrical element, the interactive element and part of the power supply are arranged inside the housing; The power supply is connected to the electrical component and the interactive component respectively, and is used to supply power to the electrical component and the interactive component; The electrical element is connected to the electrical equipment of the nuclear power plant to supply power to the electrical equipment, and the electrical element is also connected to the interactive component to receive a control signal from the interactive component to control the operating state of the electrical equipment according to the control signal and detect operating state information of the electrical equipment; The interactive component is connected to the distributed control system in the nuclear power plant, and is used to receive control instructions sent by the distributed control system, and generate the control signal based on the control instruction, so as to control the electrical element using the control signal.

2. The power distribution device according to claim 1, characterized in that: The electrical component includes a control module and a detection module, wherein the control module is also connected to the distributed control system; The control module is connected to the electrical device and is used to control the operating state of the electrical device; The detection module is used to detect the operation status information and feed the operation status information back to the control module; Wherein, the control module is also used to output the operating status information to the distributed control system.

3. The power distribution device according to claim 2, characterized in that: The interactive component includes a collection module and an output module; The acquisition module is used to collect the operating status information of the electric device and send the collected operating status information to the output module; The output module is used to receive the operation status information and send the operation status information to the distributed control system, so that the distributed control system generates the control instruction based on the operation status information.

4. The power distribution device according to claim 3, characterized in that: The output module includes an output submodule and a display submodule; The output submodule is connected to the distributed control system and the display submodule respectively, and is used to receive the operation status information and send the operation status information to the distributed control system and the display submodule; The display submodule is used to display the running status information.

5. The power distribution device according to claim 4, characterized in that: The display submodule is also connected to the control module, and is used to receive operation instructions from the user and send the operation instructions to the control module; The control module is also used to control the on and off of the electrical equipment according to the operation instruction.

6. The power distribution device according to claim 1, characterized in that: The electrical component is arranged close to the housing to increase heat dissipation of the electrical component.

7. The power distribution device according to any one of claims 1 to 6, characterized in that: The power supply includes a power supply component and a switch component; The power supply element is connected to the electrical element and the interactive element respectively via the switch element, and is used to supply power to the electrical element and the interactive element; The switch element is used to control the on / off of the power supply circuit between the power supply element and the electrical component and the interactive element.

8. The power distribution device according to any one of claims 1 to 6, characterized in that: The housing comprises a body and connecting terminals; The electrical element, the interactive element and part of the power supply are arranged inside the body; The connecting terminal is arranged on the main body, and is used to be connected to the electrical component and the electrical equipment respectively, so that the electrical component is connected to the electrical equipment of the nuclear power plant.

9. The power distribution device according to claim 8, characterized in that: The housing further comprises a sealing member for sealing between the body and the connecting terminal to improve the protection level of the body.

10. The power distribution device according to claim 8, characterized in that: The material of the body is a heat conductive material.

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