Diversified driving system for realizing protection function of high-temperature gas cooled reactor
By designing a diverse drive system in a high-temperature gas-cooled reactor reactor, using delay devices with independent sensors and FPGA technology, the problem that the protection system cannot automatically perform safety protection functions in the event of common mode failure is solved, and the software and hardware failure is achieved. Automatic safety function triggers, improving the security and reliability of the system.
Patent Information
- Application Number
- CN202411090890.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2024-12-13
AI Technical Summary
The high-temperature gas-cooled reactor protection system may not automatically realize the safety protection function in the case of common mode failure, especially when the software and hardware are collectively invalid, it cannot effectively perform all the protection functions of the safety system.
Design a variety of drive systems, using independent in-place sensors and signal processing devices, combined with FPGA technology, output signals to the shutdown circuit breaker and actuator through the delay device, ensuring that safety can be automatically triggered when the software and hardware of the protection system fails. Function.
When the specified power plant parameters exceed the set value, the corresponding safety functions can be automatically triggered when the software and hardware of the protection system are invalid, ensuring the safety and reliability of the system.
Smart Images
Figure CN119134208A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of protection instrumentation and control of high temperature gas-cooled reactors, and in particular relates to a diversified driving system for realizing the protection function of high temperature gas-cooled reactors. Background Art
[0002] The high temperature gas-cooled reactor protection system (hereinafter referred to as the protection system) is mainly used to realize the safety protection functions of the unit, including executing the reactor emergency shutdown function, dedicated safety facility driving and primary circuit instrument pipe isolation driving functions. The dedicated safety facility driving function includes realizing primary circuit system isolation and steam generator accident discharge.
[0003] The protection system receives local signals from the site, and after being processed by the internal logic processing device, it outputs the emergency shutdown signal and the dedicated safety facility drive signal through the signal driver. The emergency shutdown signal is output to the local shutdown circuit breaker, triggering the shutdown circuit breaker to trip, thereby disconnecting the drive power of the control rod. The control rod relies on gravity to insert into the graphite reflector layer channel to achieve shutdown. The dedicated safety facility drive signal and the primary instrument tube drive signal are output to the local actuator to perform the corresponding closing or opening of the actuator. In addition to designing the protection system to automatically realize the safety function, the high-temperature gas-cooled reactor is also designed with manual operation buttons to realize related safety functions.
[0004] In order to ensure that the protection system can automatically implement relevant safety protection functions when a common mode fault occurs, it is necessary to design a diverse drive system that automatically implements all functions of the protection system. Summary of the invention
[0005] The purpose of the present invention is to provide a diversified driving system for realizing the protection function of a high-temperature gas-cooled reactor, which can automatically execute all protection functions of the safety system when the common cause of software and hardware failure of the high-temperature gas-cooled reactor protection system occurs.
[0006] The technical solution of the present invention is as follows: a diversity drive system for realizing the protection function of a high-temperature gas-cooled reactor, including a protection system, a diversity drive system, a shutdown circuit breaker and an actuator, and the protection system and the diversity drive system output signals to the shutdown circuit breaker and the actuator respectively.
[0007] The protection system includes an on-site protection system sensor, a protection system signal processing device, a manual operation button and a protection system signal driving device, wherein the on-site protection system sensor is connected to the protection system signal processing device, the protection system signal processing device is connected to the protection system signal driving device, and a manual operation button is connected between the protection system signal processing device and the protection system signal driving device.
[0008] The protection system on-site sensor is used to measure the thermal process parameters which are sent to the protection system for signal processing.
[0009] The protection system signal processing device collects local sensor signals and performs isolation distribution and logic processing.
[0010] The protection system signal driving device receives signals from the protection system signal processing device and the manual operation button at the same time, performs a one-out-of-two logic vote, and then outputs the signals to the shutdown circuit breaker and the actuator to trigger the corresponding equipment action.
[0011] The internal logic operations of the protection system signal processing device and the protection system signal driving device are realized based on computer software.
[0012] The diversity drive system includes an on-site sensor for the diversity drive system, a signal processing device for the diversity drive system, a signal driving device for the diversity drive system and a delay device. The on-site sensor for the diversity drive system is connected to the signal processing device for the diversity drive system, the signal processing device for the diversity drive system is connected to the signal driving device for the diversity drive system, and the signal driving device for the diversity drive system is connected to the delay device.
[0013] The protection system signal driving device and delay device output signals to the shutdown circuit breaker and the actuator respectively.
[0014] The on-site sensor of the diversity drive system is used to measure the thermal process parameters sent to the diversity drive system for signal processing. The signal processing device of the diversity drive system collects the on-site sensor signals and then isolates, distributes and performs logical processing. The signal driving device of the diversity drive system receives the signals of the signal processing device of the diversity drive system, performs truth value judgment, and then outputs a trigger signal to the delay device.
[0015] The delay device outputs the trigger signal to the shutdown circuit breaker and the actuator after a preset period of time delay, triggering the corresponding equipment to act.
[0016] The beneficial effect of the present invention is that when the specified power plant parameters exceed the set values, the corresponding safety functions can be automatically triggered by the diversity drive system in the event of a common cause failure of the protection system's software and hardware. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Schematic diagram of signal triggering for protection system;
[0018] Figure 2 A schematic diagram of a diversified driving system for realizing the protection function of a high-temperature gas-cooled reactor provided by the present invention.
[0019] In the figure: 101 local sensor, 102 signal processing device, 103 manual operation button, 104 signal driving device, 105 shutdown circuit breaker, 106 actuator, 1 protection system, 2 local sensor of protection system, 3 signal processing device of protection system, 4 manual operation button, 5 signal driving device of protection system, 6 diversity driving system, 7 local sensor of diversity driving system, 8 signal processing device of diversity driving system, 9 signal driving device of diversity driving system, 10 delay device, 11 shutdown circuit breaker, 12 actuator. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0021] The diversity drive system for realizing the protection function of a high-temperature gas-cooled reactor provided by the present invention adopts a computer-based digital technology different from that of the protection system, and uses FPGA technology to build a diversity drive system that is completely independent of the protection system. The system adopts an on-site sensor that is completely independent of the protection system and a different internal signal processing method. The trigger signal is output to the shutdown circuit breaker and the on-site actuator respectively. The trigger signal of the diversity drive system and the trigger signal of the protection system are in an "or" manner on the on-site actuator, that is, when any trigger signal of the protection system or the diversity drive system is valid, the actuator action or the reactor emergency shutdown can be triggered.
[0022] like Figure 2 As shown, a diversity drive system for realizing the protection function of a high-temperature gas-cooled reactor includes a protection system 1, a diversity drive system 6, a shutdown circuit breaker 11 and an actuator 12. The protection system 1 and the diversity drive system 6 output signals to the shutdown circuit breaker 11 and the actuator 12 respectively.
[0023] The protection system 1 includes a protection system on-site sensor 2, a protection system signal processing device 3, a manual operation button 4 and a protection system signal driving device 5, wherein the protection system on-site sensor 2 is connected to the protection system signal processing device 3, the protection system signal processing device 3 is connected to the protection system signal driving device 5, and a manual operation button 4 is connected between the protection system signal processing device 3 and the protection system signal driving device 5.
[0024] The protection system local sensor 2 is used to measure the thermal process parameters sent to the protection system 1 for signal processing. The protection system signal processing device 3 collects the signal of the local sensor 2 and then performs isolation distribution and logic processing. The protection system signal driving device 5 simultaneously receives the signal of the protection system signal processing device 3 and the manual operation button 4, performs a two-to-one logic vote, and then outputs it to the shutdown circuit breaker 11 and the actuator 12 to trigger the corresponding equipment action. The internal logic operation of the protection system signal processing device 3 and the protection system signal driving device 5 is realized based on computer software.
[0025] The diversity drive system 6 includes a diversity drive system on-site sensor 7, a diversity drive system signal processing device 8, a diversity drive system signal driving device 9 and a delay device 10. The diversity drive system on-site sensor 7 is connected to the diversity drive system signal processing device 8, the diversity drive system signal processing device 8 is connected to the diversity drive system signal driving device 9, and the diversity drive system signal driving device 9 is connected to the delay device 10.
[0026] The protection system signal driving device 5 and the delay device 10 output signals to the trip circuit breaker 11 and the actuator 12 respectively.
[0027] The on-site sensor 7 of the diversity drive system is used to measure the thermal process parameters sent to the diversity drive system 6 for signal processing, and is designed independently from the on-site sensor 2 of the protection system. The diversity drive system signal processing device 8 collects the signal of the on-site sensor 7 and performs isolation distribution and logic processing. The diversity drive system signal driving device 9 receives the signal of the diversity drive system signal processing device 8, performs truth value judgment, and then outputs a trigger signal to the delay device 10. The delay device 10 outputs the trigger signal to the shutdown circuit breaker 11 and the actuator 12 after a predetermined period of delay, triggering the corresponding equipment to act. The internal logic operations of the diversity drive system signal processing device 8 and the diversity drive system signal driving device 9 are implemented based on FPGA technology.
[0028] The trip circuit breaker 11 and the actuator 12 simultaneously receive the trigger signals from the protection system signal driving device 5 and the diversity driving system signal driving device 9, and any trigger signal can drive the corresponding device to operate.
Claims
1. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor, characterized in that: It includes a protection system, a diversity driving system, a shutdown circuit breaker and an actuator. The protection system and the diversity driving system output signals to the shutdown circuit breaker and the actuator respectively.
2. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor according to claim 1, characterized in that: The protection system includes an on-site protection system sensor, a protection system signal processing device, a manual operation button and a protection system signal driving device, wherein the on-site protection system sensor is connected to the protection system signal processing device, the protection system signal processing device is connected to the protection system signal driving device, and a manual operation button is connected between the protection system signal processing device and the protection system signal driving device.
3. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor according to claim 1, characterized in that: The protection system on-site sensor is used to measure the thermal process parameters which are sent to the protection system for signal processing.
4. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor as claimed in claim 2, characterized in that: The protection system signal processing device collects local sensor signals and performs isolation distribution and logic processing.
5. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor as claimed in claim 2, characterized in that: The protection system signal driving device receives signals from the protection system signal processing device and the manual operation button at the same time, performs a one-out-of-two logic vote, and then outputs the signals to the shutdown circuit breaker and the actuator to trigger the corresponding equipment action.
6. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor as claimed in claim 2, characterized in that: The internal logic operations of the protection system signal processing device and the protection system signal driving device are realized based on computer software.
7. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor according to claim 1, characterized in that: The diversity drive system includes an on-site sensor for the diversity drive system, a signal processing device for the diversity drive system, a signal driving device for the diversity drive system and a delay device. The on-site sensor for the diversity drive system is connected to the signal processing device for the diversity drive system, the signal processing device for the diversity drive system is connected to the signal driving device for the diversity drive system, and the signal driving device for the diversity drive system is connected to the delay device.
8. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor as claimed in claim 2, characterized in that: The protection system signal driving device and delay device output signals to the shutdown circuit breaker and the actuator respectively.
9. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor according to claim 7, characterized in that: The on-site sensor of the diversity drive system is used to measure the thermal process parameters sent to the diversity drive system for signal processing. The signal processing device of the diversity drive system collects the on-site sensor signals and then isolates, distributes and performs logical processing. The signal driving device of the diversity drive system receives the signals of the signal processing device of the diversity drive system, performs truth value judgment, and then outputs a trigger signal to the delay device.
10. A diversified driving system for realizing the protection function of a high temperature gas-cooled reactor according to claim 9, characterized in that: The delay device outputs the trigger signal to the shutdown circuit breaker and the actuator after a preset period of time delay, triggering the corresponding equipment to act.