A sound aid for a master control rod control system and method

Abstract

The present application belongs to the technical field of nuclear power plant unit control rod control, and particularly relates to a sound auxiliary device and method for a main control control rod control system. The device comprises a signal transmission module, a system control module, a timing module, a sound module and a power module. The present application has the following beneficial effects: (1) a sound auxiliary monitoring function for control rod group movement is added, the sensitivity of the main control operator to the control rod position change is improved through the sound prompt of the buzzer, and the transmission of sensory information for reactivity control is equivalent to being added; (2) a warning and monitoring function in the non-automatic state of the control rod group is added, the main control only has a control rod hand automatic switch, but does not have an indication lamp for indicating whether the switching is successful, and the switching can only be confirmed in the local RGL control cabinet. The indication lamp is added, so that the main control has intuitive information for the control rod state and whether the switching is successful.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of nuclear power plant unit control rod control, and particularly relates to a sound auxiliary device and method for a main control control rod control system. BACKGROUND

[0002] The control rod group is one of main means for controlling the reactivity of a reactor, and the rod control system responds to the temperature difference between the primary loop and the secondary loop to make the reactor operate within the safety limit. Therefore, it is very important for the main control to control and monitor the state of the control rod. The current monitoring method of the main control room for the control rod is limited to the daily inspection of the state on the panel and the trend change in the KIT display, and the method is relatively single. SUMMARY

[0003] The purpose of the application is to provide a sound auxiliary device and method for a main control control rod control system, which can increase a monitoring method of the main control room for the state change of the control rod group during the normal operation of the nuclear power plant, so that the monitoring method of the control rod group has diversity and independence.

[0004] The technical invention of the application is as follows: a sound auxiliary device for a main control control rod control system, which comprises a signal transmission module, a system control module, a timing module, a sound module and a power module.

[0005] The signal transmission module receives and transmits the control rod group action signal and the contact signal of the control rod group state selection switch in the main control room, introduces the program control of the system control module, and triggers the sound of the piezoelectric buzzer through the voltage change in the control circuit to serve as an auxiliary prompt.

[0006] The power module provides power supply for the device.

[0007] The system control module is powered by the power module, receives the control rod group action signal and the contact signal of the control rod group state selection switch in the main control room transmitted by the signal transmission module, and then transmits the square wave signal and the like to the timing module circuit through the internal PLC program control of the system control module.

[0008] The timing module receives the signal transmitted by the system control module, decides whether to start the timing program according to the logic, starts the timing program if the timing is needed, the program can be corrected through the PLC, and after the timing, the signal is transmitted to the sound module to trigger the sound of the piezoelectric buzzer to serve as an auxiliary prompt.

[0009] The sound module triggers the sound of the piezoelectric buzzer through the voltage change in the control circuit to serve as an auxiliary prompt.

[0010] A sound auxiliary method for a main control control rod control system comprises the following steps:

[0011] Step 1: turn on the power of the prompting device, and place the device in normal mode;

[0012] Step 2: test the sound of the prompting device;

[0013] Step 3: when the control rod is automatically operated, the device automatically gives a sound prompt, and the warning light is on;

[0014] Step 4: place the control rod in manual mode, after 300s, if the control rod is not manually lifted or inserted, the sound system will trigger a 15s sound warning every 45s, and the warning light is on;

[0015] Step 5: place the control rod back to automatic mode, the sound warning disappears, and the warning light is off.

[0016] A sound auxiliary method for a master control rod control system, comprising the following steps:

[0017] Step 1: turn on the power of the prompting device, and place the device in normal mode;

[0018] Step 2: test the sound of the prompting device;

[0019] Step 3: when the control rod is automatically operated, the device automatically gives a sound prompt, and the warning light is on;

[0020] Step 4: place the control rod in manual mode, after 300s, if the control rod is not manually lifted or inserted, the sound system will trigger a 15s sound warning every 45s, and the warning light is on;

[0021] Step 5: place the control rod back to automatic mode, the sound warning disappears, and the warning light is off.

[0022] The beneficial effects of the present application are:

[0023] (1) a sound auxiliary monitoring function of control rod group action is added, the sensitivity of the master control operator to the control rod position change is improved through the sound prompt of the buzzer, which is equivalent to adding a sensory information transmission for reactivity control.

[0024] (2) a warning and monitoring function of the control rod group in a non-automatic state is added, the master control only has a control rod manual-automatic switch, but does not have an indication light for indicating whether the switch is successful, and only the on-site RGL control cabinet can confirm. The indication light is added, so that the master control has intuitive information for the control rod state and whether the manual-automatic switch is successful. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A sound auxiliary device schematic diagram for a master control rod control system is provided.

[0026] Figure 2 A voice auxiliary device interface diagram of a master control rod control system provided by the application;

[0027] Figure 3 A voice auxiliary device principle schematic diagram of a master control rod control system provided by the application.

[0028] In the figure: 1 power switch, 2 mode selection switch, 3 buzzer, 4 control rod group non-automatic warning light, 5 test button. DETAILED DESCRIPTION

[0029] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0030] The voice in the master control serves as a sensitive prompt, and when important equipment of the unit or parameters are abnormal or are in action, the alarm prompt is triggered, so that the master control personnel can pay attention to the change of the unit state in time. Therefore, the combination of the master control rod control system and the voice prompt device can effectively increase the attention of the master control personnel to the change of the state of the control rod in the normal operation process, enhance the transmission of important information, reduce human error, and improve the operation reliability of the unit.

[0031] The buzzer sound device adopted in the application is a mature technology and reliable product, and can be better matched with the master control panel in M310 and other units. Meanwhile, the product components can be upgraded and optimized according to the actual situation of different units on the basis of the principle of the application.

[0032] As shown in the figure, the voice auxiliary device of the master control rod control system provided by the application comprises a signal transmission module, a system control module, a timing module, a voice module and a power module. The following is the description of the functions of the modules: Figure 1

[0033] Power module: mainly supplies power to the system control module, the timing module, the voice module and the like. And the power on-off mode can be selected through the user interface.

[0034] Signal transmission module: the signal transmission module gives out signals through the contact signals of the control rod group action signal in the control rod group power cabinet and the master control room control rod group state selection switch, and transmits the signals to the system control module.

[0035] System control module: powered by the power module, receiving the control rod group action signal and the contact signal of the master control room control rod group state selection switch transmitted by the signal transmission module, and then transmitting the square wave signal and the like to the timing module circuit through the internal PLC program control of the system control module. In terms of user control, the operation mode can be selected through the selection switch, and the system control module switches the operation mode. And the related light signal is returned to the user interface. ​

[0036] Timing module: receives the signal transmitted by the system control module, decides whether to start the timing program according to the logic, starts the timing program if timing is needed, the program can be corrected through PLC, and after timing, transmits a signal to the sound module to trigger the sound of the piezoelectric buzzer for auxiliary prompting. Whether the timing function is needed or not, the signal transmitted by the system control module will be finally transmitted to the sound module.

[0037] Sound module: triggers the sound of the piezoelectric buzzer through voltage change in the control circuit for auxiliary prompting.

[0038] The characteristics of the present application are:

[0039] 1. When the unit is normally running, the sound auxiliary prompting function of the control rod group is realized when the control rod group is actuated (lifted or inserted), and a function of monitoring the control rod group by the main control is provided.

[0040] 2. When the unit is normally running, the control state of the control rod group is placed in a non-automatic state to provide a warning effect, and the possibility of losing the monitoring of the control rod group state is reduced.

[0041] The control rod group actuation signal emitted from the control rod group power supply box triggers a separate signal, which is independent of the control rod group rod position indication signal, to avoid mutual influence. In the normal mode, the actuation of the control rod group will make the buzzer in the sound auxiliary device emit a prompt sound ( Figure 3 ), and when the manual automatic selection switch of the control rod group is in the non-automatic state, a certain delay will emit an electrical signal to trigger the buzzer in the sound auxiliary device to emit a warning sound, which serves as a follow-up monitoring and prompting function. In all modes, when the control rod group is selected in the non-automatic position, the warning light on the sound auxiliary device is on ( Figure 3 ), which serves as a prompt for the main control personnel to pay attention to the current state of the control rod group.

[0042] Device commissioning and shutdown: as shown in Figure 2 , an independent power supply switch is provided to supply power to the device. Once the device performance decreases or abnormal conditions occur, the device can be easily shut down. After the device is debugged, the device can be directly commissioned, which will not affect the control and power supply of other devices in the main control room.

[0043] Device operating mode: the device operating mode is divided into normal mode and quiet mode: the normal mode is that the sound prompting function and the indicator light function are normally running. The quiet mode is a closed sound mode, only the warning light function is normally running. The required mode can be selected according to the needs of the main control.

[0044] Sound prompting function: divided into control rod group lifting and insertion actuation prompt sound and control rod group non-automatic warning sound.

[0045] (1) Control rod group up and down prompt sound: when the control rod group power supply box sends a control rod coil action execution lifting or down insertion instruction, the sound prompt instruction of the sound auxiliary device is also sent. When the sound auxiliary device power is turned on and in the normal mode, the device sends a 1s long prompt sound.

[0046] (2) Control rod group non-automatic warning sound: when the control rod group action selection switch is in the non-automatic position (i.e. in the manual or step correction case), and there is no manual lifting or down insertion action of the control rod within 300s in this case, the sound system will trigger a 15s long sound warning every 45s interval until the control rod group is switched back to automatic. If there is a manual lifting or down insertion action of the control rod during the control rod group selection in the non-automatic position (i.e. in the manual or step correction case), the delay is reset.

[0047] Indicating light warning function: when the control rod group action selection switch is in the non-automatic position, the warning light on the sound auxiliary device is lit ( Figure 3 ), which prompts the main control personnel to pay attention to the current state of the control rod group.

[0048] Test function: pressing the test button can test whether the sound prompt function and the warning light function are working normally.

[0049] Other control functions:

[0050] The delay time of the delay relay and the sound prompt time in the program can be modified as needed.

[0051] The sound auxiliary method of the main control control rod rod control system provided by the application comprises the following steps:

[0052] Step 1: Turn on the power of the prompt device and set the device to the normal mode;

[0053] Step 2: Test the normal sound of the prompt device;

[0054] Step 3: When the control rod is automatically operated, the device automatically sends a sound prompt and the warning light is on;

[0055] Step 4: Put the control rod in manual, after 300s, there is no manual lifting or down insertion action of the control rod, the sound system will trigger a 15s long sound warning every 45s interval, and the warning light is on;

[0056] Step 5: Put the control rod back to automatic, the sound warning disappears and the warning light is off.

Claims

1. A sound-assisted device for a master control rod control system, characterized in that: It includes a signal transmission module, a system control module, a timing module, a sound module, and a power supply module; The signal transmission module receives and transmits the control rod group action signals and the contact signals of the main control room control rod group status selection switch, and introduces them into the system control module program control. It triggers the sound of the piezoelectric buzzer by controlling the voltage change in the timing module circuit to provide auxiliary prompts. The system control module is powered by the power supply module, receives the control rod group action signals and the contact signals of the main control room control rod group status selection switch transmitted by the signal transmission module, and then transmits the square wave signal to the timing module circuit through the internal PLC program control of the system control module. The timing module receives signals from the system control module and determines whether to start the timing program according to logic. If timing is required, the timing program is started. The program can be corrected by the PLC. After the timing is up, a signal is sent to the sound module to trigger the piezoelectric buzzer to sound as an auxiliary prompt.

2. The sound auxiliary device for a master control rod control system as described in claim 1, characterized in that: The power module provides power to the device.

3. The sound auxiliary device for a master control rod control system as described in claim 1, characterized in that: The sound module triggers the sound of a piezoelectric buzzer by controlling voltage changes in the circuit, serving as an auxiliary prompt.

4. An auxiliary method for using the apparatus as described in claim 1, characterized in that, Includes the following steps: Step 1: Turn on the power to the prompting device and put the device into normal mode; Step 2: The test prompt device sounds normally; Step 3: When the control stick moves automatically, the device will automatically emit an audible prompt and the warning light will illuminate; Step 4: Set the control stick to manual mode. After 300 seconds, if the control stick does not move manually up or down, the sound system will trigger a 15-second sound warning every 45 seconds, and the warning light will illuminate. Step 5: Return the control stick to automatic mode. The audible warning will disappear, and the warning light will turn off.

Images