CN212435369U - Nuclear power station power distribution system - Google Patents
Nuclear power station power distribution system Download PDFInfo
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- CN212435369U CN212435369U CN202021157573.2U CN202021157573U CN212435369U CN 212435369 U CN212435369 U CN 212435369U CN 202021157573 U CN202021157573 U CN 202021157573U CN 212435369 U CN212435369 U CN 212435369U
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Abstract
The utility model provides a nuclear power station distribution system, nuclear power station distribution system includes first power, second power, first switch, second switch, load and first mechanical interlocking device, and first power links to each other with the load through first circuit, and the second power links to each other with the load through the second circuit, and first switch is located first circuit, and the second switch is located the second circuit, and first mechanical interlocking device is connected with first switch and second switch respectively for it is in the on-state not simultaneously to restrict first switch and second switch. When the power supply fails, the power supply to the load can be timely recovered by disconnecting the line switch where the failure power supply is located and closing the other line switch, so that the problem that the safe operation of the power distribution system of the nuclear power station is influenced because the short-time power supply recovery cannot be ensured under the condition that a line of safety-level power supply fails is solved. In addition, the first mechanical interlocking mechanism is used for limiting the first switch and the second switch not to be in a conducting state at the same time, and the safety requirement of electrical isolation is met.
Description
Technical Field
The utility model relates to a nuclear power station field, in particular to nuclear power station power distribution system.
Background
The conventional nuclear power station power distribution system is provided with a plurality of redundant series of safety-level alternating-current power distribution systems according to standard requirements, the redundant safety-level power distribution systems and electric equipment of different series are not allowed to be automatically connected, and when one-column safety-level power supply fails, the short-time power supply recovery cannot be ensured because the maintenance recovery time of the failed power supply cannot be determined, so that the safe operation of the nuclear power station power distribution system and the method is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a nuclear power station power distribution system solves the redundant safety level power distribution system and the consumer of current different series and does not allow automatic connection, under a safety level power failure's the condition, can't guarantee the short-term power recovery, influences the problem of nuclear power station power distribution system and method safe operation.
In order to achieve the above object, the utility model provides a nuclear power station power distribution system, nuclear power station power distribution system includes first power, second power, first switch, second switch, load and first mechanical interlocking device, first power through first circuit with the load is connected, the second power through the second circuit with the load is connected, first switch is located on the first circuit, the second switch is located on the second circuit, first mechanical interlocking device respectively with first switch with the second switch is connected, is used for the restriction first switch with the second switch is in the on-state simultaneously.
Optionally, the mechanical interlocking mechanism is a mechanical interlocking key.
Optionally, a third switch is further disposed on the first line, and the third switch is connected to the load through the first switch.
Optionally, the third switch is a circuit breaker.
Optionally, the nuclear power plant power distribution system further includes a second mechanical interlocking mechanism, and the second mechanical interlocking mechanism is respectively connected to the first switch and the third switch, and is configured to control the third switch to be turned off after being in an off state, or to be turned on after being in an on state.
Optionally, a fourth switch is further disposed on the second line, and the fourth switch is located between the second switch and the load and connected to the second switch and the load.
Optionally, the second switch is a circuit breaker.
Optionally, the nuclear power plant power distribution system further includes a current detection device, and the current detection device is electrically connected to the first line and the second line, and is configured to detect currents of the first line and the second line.
Optionally, the nuclear power plant power distribution system further includes a communication device, and the communication device is in communication connection with the current detection device and an external monitoring room, and is configured to output currents of the first line and the second line obtained through detection to the monitoring room.
Optionally, the nuclear power station power distribution system further includes an alarm device, and the alarm device is electrically connected to the current detection device.
In the embodiment of the utility model, nuclear power station distribution system includes first power, second power, first switch, second switch, load and first mechanical interlocking device, and first power links to each other with the load through first circuit, and the second power links to each other with the load through the second circuit, and first switch is located first circuit, and the second switch is located the second circuit, and first mechanical interlocking device is connected with first switch and second switch respectively for it is in the on-state not simultaneously to restrict first switch and second switch. Therefore, when the power supply fails, the power supply to the load can be timely recovered by disconnecting the line switch where the failure power supply is located and closing the other line switch, and the problem that the safe operation of the power distribution system of the nuclear power station is influenced because the short-time power supply recovery cannot be ensured under the condition that a line of safety power supply fails is solved. In addition, the first mechanical interlocking mechanism is used for limiting the first switch and the second switch not to be in a conducting state at the same time, and the safety requirement of electrical isolation is met.
Drawings
For a clearer explanation of the technical solutions in the embodiments of the present invention, the drawings in the specification are described below, it is obvious that the following drawings are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the listed drawings without creative efforts.
Fig. 1 is a structural diagram of a nuclear power station power distribution system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a nuclear power plant power distribution system, the nuclear power plant power distribution system includes a first power source 10, a second power source 20, a first switch 11, a second switch 21, a load and a first mechanical interlocking mechanism, the first power source 10 is connected to the load through a first line, the second power source 20 is connected to the load through a second line, the first switch 11 is located on the first line, the second switch 21 is located on the second line, the first mechanical interlocking mechanism is respectively connected to the first switch 11 and the second switch 21, so as to limit that the first switch 11 and the second switch 21 are not in a conducting state at the same time.
It should be understood that the first switch 11 has two working states, when the first switch 11 is closed, the first switch is in a conducting state, the first line is conducting, and the first power supply can supply power to the load through the first line; when the first switch 11 is turned off, the first switch 11 is in an off state, the first line is turned off, and the first power supply stops supplying power to the load. Similarly, the second switch 21 has two working states, when the second switch 21 is closed, the second switch is in a conducting state, the second line is conducted, and the second power supply can supply power to the load through the second line; when the second switch 21 is turned off, the second switch 21 is in an off state, the second line is disconnected, and the second power supply stops supplying power to the load.
Specifically, the first mechanical interlocking mechanism includes a first part, a second part and a third part, the first part is connected with the first switch 11, the second part is connected with the second switch 21, the third part is detachably connected with the first part and the second part respectively, and the third part can be connected with at most one of the first part and the second part at the same time. When the first switch 11 is turned off, the first member and the third member are automatically separated, and when the first member and the third member are connected, the first switch 11 is in a conducting state. When the second switch 21 is turned off, the second member is automatically separated from the third member, and when the second member is connected to the third member, the second switch 21 is turned on.
Because the third component can only be connected with one of the first component and the second component at most in the same time, and when the third component is connected with the first component, the first switch 11 is in a conducting state, and when the first switch 11 is disconnected, the third component is automatically separated from the first component; when the second component is connected with the third component, the second switch 21 is in a conducting state, and when the second switch 21 is disconnected, the second component and the third component are automatically separated. The first switch 11 and the second switch 21 can be restricted from being in a conducting state at the same time by the first mechanical interlocking mechanism.
In case of a failure of a column of safety level power supplies, such as the failure of the first power supply 10, the first switch 11 is opened to obtain a third component, which is then connected to said second component, the second switch 21 is closed and the second power supply 20 is used to supply power to said load. The problem of current different series redundant safety level distribution system and consumer do not allow automatic connection, under the condition of a safety level power failure, can't guarantee the short-term power supply and resume, influence nuclear power station distribution system and method safe operation is solved.
Optionally, the mechanical interlocking mechanism is a mechanical interlocking key.
Specifically, when a power failure occurs in a row of safety-level power supplies, such as the first power supply 10 fails, the first switch 11 is turned off to obtain a second key, and then the second key is turned on to close the second switch 21, because the first power supply 10 is connected to the load through the first line, the second power supply 20 is connected to the load through the second line, the first switch 11 is located on the first line, and the second switch 21 is located on the second line, when the first power supply 10 fails, the power supply to the load can be timely recovered by turning off the first switch 11 of the first line where the failed power supply is located and turning on the second switch 21 of the second line, so that the problem that the power supply recovery in a short time cannot be guaranteed and the safe operation of the power distribution system and the method of the nuclear power plant is affected when the power supply fails is solved. In addition, by applying the mechanical interlocking key, at most one switch can be closed in the same time, so that at most one line can be in a conducting state in the same time, and the safety requirement of electrical isolation is realized.
Optionally, a third switch 12 is further disposed on the first line, and the third switch 12 is connected to the load through the first switch 11.
By adding the third switch 12 to the first line, when the first switch 11 is closed due to misoperation, the first line cannot be conducted because the third switch 12 is still in an off state, so that the safety of the power distribution system of the nuclear power station can be improved.
Optionally, the third switch 12 is a circuit breaker.
The circuit can produce electric arc when the switch disconnection is closed, and electric arc can produce the injury to circuit and switch operation people, and the circuit breaker has the arc extinguishing function, can avoid the circuit to produce electric arc when the switch disconnection is closed, can produce the influence of injury to circuit and switch operation people to improve nuclear power station power distribution system's security.
Optionally, the nuclear power plant power distribution system further includes a second mechanical interlocking mechanism, and the second mechanical interlocking mechanism is respectively connected to the first switch 11 and the third switch 12, and is configured to control the third switch 12 to be in an open state and then to open the first switch 11, or the first switch 11 to be in a closed state and then to close the third switch 12.
Specifically, the second mechanical interlocking mechanism may be a mechanical interlocking key, and the third switch 12 is a circuit breaker. In the event of a failure of a column of safety level power supplies, such as the failure of the first power supply 10, the third switch 12 is first opened to obtain the first key, and the first key is then used to open the first switch 11 and fix the first key in the open position of the first switch 11. When the first power supply is recovered, the first switch 11 is firstly closed to obtain a first key, the third switch 12 is closed by the first key, and the first key is fixed at the closed position of the third switch 12.
After the third switch 12 is opened, a first key can be obtained to open the first switch 11 and fix the first key at the open position of the first switch 11, and after the first switch 11 is closed, the first key can be obtained, the third switch 12 is closed by the first key, and the first key is fixed at the closed position of the third switch 12. It can be ensured by using the second mechanical interlock mechanism that the third switch 12 is first opened when the first line transitions from the on state to the off state and that the third switch 12 is finally closed when the first line transitions from the off state to the on state. Since the third switch 12 is a circuit breaker and has an arc extinguishing function, the second mechanical interlocking mechanism is used to limit the third switch 12 to be opened first when the first line is changed from the on state to the off state, and to limit the third switch 12 to be closed last when the first line is changed from the off state to the on state, thereby avoiding the first switch 11 without the arc extinguishing function from being operated in a live state and improving the safety of the power distribution system of the nuclear power plant.
Optionally, a fourth switch 22 is further disposed on the second line, and the fourth switch 22 is located between the second switch 21 and the load and connected to the second switch 21 and the load.
By adding the fourth switch 22 to the second line, when the second switch 21 is closed due to misoperation, the second line cannot be conducted due to the fact that the fourth switch 22 is still in an off state, and therefore safety of the nuclear power station power distribution system can be improved.
Optionally, the second switch 21 is a circuit breaker.
The circuit can produce electric arc when the switch disconnection is closed, and electric arc can produce the injury to circuit and switch operation people, and the circuit breaker has the arc extinguishing function, can avoid the circuit to produce electric arc when the switch disconnection is closed, can produce the influence of injury to circuit and switch operation people to improve nuclear power station power distribution system's security.
Optionally, the nuclear power plant power distribution system further includes a current detection device, and the current detection device is electrically connected to the first line and the second line, and is configured to detect currents of the first line and the second line.
The current detection device can detect the current of the first line and the second line in real time, and the working state of the first line and the second line can be determined according to the real-time current of the first line and the second line.
Optionally, the nuclear power plant power distribution system further includes a communication device, and the communication device is in communication connection with the current detection device and an external monitoring room, and is configured to output currents of the first line and the second line obtained through detection to the monitoring room.
The communication device may be a wireless bridge, the bridge connects the detection device and an external monitoring room, and the detection information may be transmitted and circulated via the wireless bridge. The working states of the first line and the second line can be known by monitoring personnel in a monitoring room, and the current detection device does not need to be checked on site. Set up communication device conveniently carries out visual management to nuclear power station distribution system, has saved the human cost that artifical timing detected, has reduced nuclear power station distribution system's running cost.
Optionally, the nuclear power station power distribution system further includes an alarm device, and the alarm device is electrically connected to the current detection device.
The alarm device comprises a single chip microcomputer, a buzzer or an LED lamp, the detection device transmits current information to the single chip microcomputer, the single chip microcomputer compares the current information with a preset value, and when the current information exceeds a preset range, the single chip microcomputer sends a low potential signal to trigger the buzzer to send an alarm sound or trigger the alarm lamp to flicker.
The embodiment of the utility model provides an in, through setting up alarm device, work as current information surpasss the preset scope, alarm device sends alarm information, works as current information surpasss the preset scope, alarm device sends the chimes of doom or the alarm lamp scintillation to arouse relevant personnel to notice, take counter-measures rapidly, avoid in response to untimely production serious consequence.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a nuclear power station distribution system, its characterized in that nuclear power station distribution system includes first power, second power, first switch, second switch, load and first mechanical interlocking device, first power through first circuit with the load is connected, the second power through the second circuit with the load is connected, first switch is located on the first circuit, the second switch is located on the second circuit, first mechanical interlocking device respectively with first switch with the second switch is connected, is used for the restriction first switch with the second switch is not in the on-state simultaneously.
2. The nuclear power plant power distribution system of claim 1, wherein the mechanical interlock is a mechanical interlock key.
3. The nuclear power plant power distribution system of claim 1, further comprising a third switch on the first line, the third switch coupled to the load through the first switch.
4. The nuclear power plant power distribution system of claim 3, wherein the third switch is a circuit breaker.
5. The nuclear power plant power distribution system of claim 4, further comprising a second mechanical interlock mechanism coupled to the first switch and the third switch, respectively, for controlling the third switch to open after the third switch is in an open state, or to close after the first switch is in a closed state.
6. The nuclear power plant power distribution system of claim 1, further comprising a fourth switch on the second line, the fourth switch being positioned between and connected to the second switch and the load.
7. The nuclear power plant power distribution system of claim 6, wherein the second switch is a circuit breaker.
8. The nuclear power plant power distribution system of claim 1, further comprising a current sensing device electrically connected to the first and second lines for sensing current in the first and second lines.
9. The nuclear power plant power distribution system of claim 8, further comprising a communication device communicatively connected to the current detection device and an external monitoring room, respectively, for outputting the detected currents of the first and second lines to the monitoring room.
10. The nuclear power plant power distribution system of claim 9, further comprising an alarm device electrically connected to the current detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021157573.2U CN212435369U (en) | 2020-06-19 | 2020-06-19 | Nuclear power station power distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021157573.2U CN212435369U (en) | 2020-06-19 | 2020-06-19 | Nuclear power station power distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212435369U true CN212435369U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021157573.2U Active CN212435369U (en) | 2020-06-19 | 2020-06-19 | Nuclear power station power distribution system |
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| CN (1) | CN212435369U (en) |
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- 2020-06-19 CN CN202021157573.2U patent/CN212435369U/en active Active
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