An ultrasonic detection control system for primary components in nuclear power plants

Abstract

The present invention relates to an ultrasonic inspection and control system for primary components in nuclear power plants, comprising: a power supply module, a motion control system, a motor driver, a motor start-stop logic control module, an ultrasonic instrument, a main bolt ultrasonic scanner, a main pipeline ultrasonic scanner, a main steam pipeline ultrasonic scanner, and a PC control computer; the PC control computer sets the parameters and data output display of the three ultrasonic scanners; the motion control system sends motion control instructions, receives emergency stop input signals, and generates emergency stop instructions; the motor driver motion control instructions control the movement of dual motors; the motor start-stop logic control module controls the enable, close, and emergency stop of each axis according to enable signals and emergency stop input signals; the ultrasonic instrument generates feedback signals from the three ultrasonic scanners; and the three ultrasonic scanners perform ultrasonic inspections according to the motor drive signals. The present invention meets the control and ultrasonic acquisition requirements of the three ultrasonic scanners, significantly reduces manufacturing costs, and improves economy and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of non-destructive testing, and more particularly to an ultrasonic testing control system applied to primary components of a nuclear power plant. Background Art

[0002] The main bolts, main pipelines, and main steam pipelines of nuclear reactor pressure vessels are important components in nuclear power plants. These components operate under harsh environments such as high strength, high impact, high stress, and high radiation for a long time. These forgings are required to have very high comprehensive mechanical properties and high-quality material structure. Currently, sensitive ultrasonic scanners are used to conduct regular comprehensive inspections of these components.

[0003] Currently, ultrasonic scanners for main bolts, main pipes, and main steam lines use two-axis scanners, each consisting of a circumferentially rotating module and an axially stepping module. Therefore, controlling these three ultrasonic scanners requires three corresponding control systems, which inevitably increases the number of control systems, manufacturing costs, and overall system complexity. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an ultrasonic detection control system for primary components of a nuclear power plant in response to the problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the technical problem is to construct an ultrasonic detection control system for primary components of a nuclear power plant, including: a power supply module, a motion control system, a motor driver, a motor start-stop logic control module, an ultrasonic instrument, a main bolt ultrasonic scanner, a main pipeline ultrasonic scanner, a main steam pipeline ultrasonic scanner, and a PC control computer;

[0006] The PC control computer is used to set parameters of the main bolt ultrasonic scanner, the main pipeline ultrasonic scanner, and the main steam pipeline ultrasonic scanner, and output and display ultrasonic detection data;

[0007] The power module is used to provide electrical energy;

[0008] The motion control system is used to send motion control instructions to the motor driver and receive an emergency stop input signal and generate an emergency stop instruction according to the emergency stop input signal;

[0009] The motor driver is used to output corresponding drive signals according to the motion control instructions sent by the motion control system to control the movement of the dual motors;

[0010] The motor start-stop logic control module is used to control the enable, close and emergency stop of each axis according to the enable signal sent by the motion control system and the emergency stop input signal;

[0011] The ultrasonic instrument is used to receive feedback signals from the main bolt ultrasonic scanner, the main pipeline ultrasonic scanner, and the main steam pipeline ultrasonic scanner;

[0012] The main bolt ultrasonic scanner, the main pipeline ultrasonic scanner and the main steam line ultrasonic scanner are used to perform ultrasonic testing according to motor drive signals.

[0013] In the ultrasonic detection control system for primary components of a nuclear power plant according to the present invention, the motion control system includes: a motion controller, a controller digital interface, an axis control interface, and a controller analog interface;

[0014] The motion controller is used to perform system control;

[0015] The controller digital interface is used to perform input / output of digital signals;

[0016] The controller analog interface is used to input analog signals.

[0017] The ultrasonic detection and control system for primary components of a nuclear power plant according to the present invention further includes: a differential-to-single-ended chip and a single-ended-to-differential chip;

[0018] The differential-to-single-ended chip is used to convert the differential signals output by the main pipeline ultrasonic scanner and the main steam pipeline ultrasonic scanner into single-ended signals and transmit them to the ultrasonic instrument;

[0019] The single-ended to differential chip is used to convert the single-ended signal output by the main bolt ultrasonic scanner into a differential signal and transmit it to the axis control interface.

[0020] The ultrasonic detection control system for primary components of a nuclear power plant according to the present invention further includes: a control cable interface;

[0021] The control cable interface is used to receive feedback signals from the main bolt ultrasonic scanner, the main pipeline ultrasonic scanner, and the main steam pipeline ultrasonic scanner, and transmit the feedback signals to the motion control system and the ultrasonic instrument respectively.

[0022] The ultrasonic detection control system for primary components of a nuclear power plant according to the present invention further includes: a communication interface;

[0023] The communication interface is provided between the motion control system and the PC control computer, and is used for performing communication between the motion control system and the PC control computer.

[0024] In the ultrasonic detection control system for primary components of a nuclear power plant according to the present invention, the invention further comprises: a motor filter unit provided between the output end of the dual motor and the control cable interface;

[0025] The motor filter unit is used to suppress motor noise and high-frequency electromagnetic interference.

[0026] The ultrasonic detection control system for primary components of a nuclear power plant according to the present invention further includes: an optical coupling isolation module;

[0027] The optical coupling isolation module is used to perform optical isolation on the limit switch feedback signal and the motor driver enable signal.

[0028] In the ultrasonic detection control system for primary components of a nuclear power plant according to the present invention, the controller digital interface includes: a limit switch signal input, an emergency stop signal input, a general signal input, and an emergency stop signal output;

[0029] The axis control interface includes: an A-axis control interface and a B-axis control interface; the A-axis control interface and the B-axis control interface respectively send an enable control signal to the motor driver according to the control of the motion controller;

[0030] The controller analog interface is used to receive the output voltage of the motor driver and convert the output voltage into current.

[0031] The ultrasonic detection control system for primary components of a nuclear power plant according to the present invention further includes: an emergency stop switch, a heat dissipation system, and a power switch;

[0032] The emergency stop switch is connected to the motor start-stop logic control module and the motion control system respectively, and is used to generate the emergency stop input signal;

[0033] The heat dissipation system is used to perform heat dissipation operations;

[0034] The power switch is used to control the on / off of the heat dissipation system.

[0035] In the ultrasonic detection and control system for primary components of a nuclear power plant described in the present invention, the power supply module is a power supply with three voltage levels.

[0036] The ultrasonic inspection control system for primary components of a nuclear power plant implemented in the present invention has the following beneficial effects: it includes: a power supply module, a motion control system, a motor driver, a motor start-stop logic control module, an ultrasonic instrument, a main bolt ultrasonic scanner, a main pipeline ultrasonic scanner, a main steam line ultrasonic scanner, and a PC control computer; the PC control computer sets the parameters and data output display of the three ultrasonic scanners; the motion control system sends motion control instructions, receives emergency stop input signals, and generates emergency stop instructions; the motor driver motion control instructions control the movement of the dual motors; the motor start-stop logic control module controls the enable, close, and emergency stop of each axis based on enable signals and emergency stop input signals; the ultrasonic instrument generates feedback signals from the three ultrasonic scanners; and the three ultrasonic scanners perform ultrasonic inspections based on the motor drive signals. The present invention meets the control and ultrasonic acquisition requirements of the three ultrasonic scanners, significantly reduces manufacturing costs, and improves economy and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0038] Figure 1 This is a schematic diagram of the appearance of an ultrasonic detection and control system for primary components of a nuclear power plant provided by the present invention;

[0039] Figure 2 The diagram is a schematic diagram of an internal control circuit of an ultrasonic detection control system for a primary component of a nuclear power plant, provided by the present invention. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] In order to meet the ultrasonic inspection requirements of different inspection components, the present invention provides a universal two-axis ultrasonic inspection control system, which can be used to perform ultrasonic inspection on important components (i.e., primary components) such as main bolts, main pipes, and main steam lines of nuclear reactor pressure vessels. Figure 1 The figure shows the appearance of the ultrasonic detection control system provided by the present invention applied to the primary components of a nuclear power plant. Figure 1 As shown, the ultrasonic detection control system for primary components of nuclear power plants provided by the present invention can be configured as a portable control box structure with overall dimensions of 380×340×200mm and a weight of 10kg. The use of a portable box structure can improve the portability of the control system.

[0042] refer to Figure 2, Figure 2 This is the internal circuit diagram of the ultrasonic detection control system applied to the primary components of a nuclear power plant provided by the present invention.

[0043] Specifically, such as Figure 2 As shown, the ultrasonic detection control system applied to the primary components of a nuclear power plant includes: a power module 1, a motion control system 2, a motor driver 3, a motor start-stop logic control module 8, an ultrasonic instrument 9, a main bolt ultrasonic scanner 14, a main pipeline ultrasonic scanner 15, a main steam pipeline ultrasonic scanner 16 and a PC control computer 18.

[0044] The PC control computer 18 is used to set parameters for the main bolt ultrasonic scanner 14, the main pipeline ultrasonic scanner 15, and the main steam pipeline ultrasonic scanner 16, as well as to output and display ultrasonic detection data; the power supply module 1 is used to provide electrical energy; the motion control system 2 is used to send motion control instructions to the motor driver 3, receive emergency stop input signals, and generate emergency stop instructions based on the emergency stop input signals; the motor driver 3 is used to output corresponding drive signals based on the motion control instructions sent by the motion control system 2 to control the movement of the dual motors; the motor start-stop logic control module 8 is used to control the enable, closing, and emergency stop of each axis based on the enable signal and emergency stop input signal sent by the motion control system 2; the ultrasonic instrument 9 is used to receive feedback signals from the main bolt ultrasonic scanner 14, the main pipeline ultrasonic scanner 15, and the main steam pipeline ultrasonic scanner 16; the main bolt ultrasonic scanner 14, the main pipeline ultrasonic scanner 15, and the main steam pipeline ultrasonic scanner 16 are used to perform ultrasonic detection based on the motor drive signals.

[0045] In the embodiment of the present invention, the power module 1 is a power supply with three voltage levels. That is, the power module 1 is a power supply with three voltage levels, which can output voltages of 12V, 24V, and 30V respectively, and respectively power the encoder, motion control system 2, cooling system 12 (cooling fan), motor driver 3, and motor.

[0046] Optionally, in an embodiment of the present invention, the motion control system 2 includes: a motion controller, a controller digital interface, an axis control interface, and a controller analog interface. The motion controller is used to perform system control; the controller digital interface is used to perform digital signal input / output; and the controller analog interface is used to perform analog signal input.

[0047] Specifically, the controller digital interface includes: limit switch signal input, emergency stop signal input, general signal input and emergency stop signal output. That is, the main functions of the controller digital interface are: (1) limit switch signal input. When the travel limit is reached, the motion controller will generate a limit deceleration setting instruction, and the motor movement will be controlled to decelerate and stop through the limit deceleration setting instruction; when the user needs to cross the limit operation, the limit reverse valid instruction can be used to set the limit signal reverse valid. (2) emergency stop input signal. Specifically, when the user presses the emergency stop switch 13, the emergency stop switch 13 will generate an emergency stop input signal, which will be transmitted to the motion controller, and the motion controller will issue an immediate stop instruction. At the same time, the emergency stop status will be transmitted to the PC control computer 18, and the PC control computer 18 will output and display the emergency stop status. (3) general input and output signals. Specifically, the general input signal can be used as a software display of the control system, emergency stop, etc., and the output signal can be used for software emergency stop signal output.

[0048] Optionally, in an embodiment of the present invention, the axis control interface includes: an A-axis control interface and a B-axis control interface; the A-axis control interface and the B-axis control interface respectively send an enable control signal to the motor driver 3 according to the control of the motion controller. Specifically, the A-axis control interface and the B-axis control interface can receive feedback signals from the rotary encoders of the mechanical equipment motor A and motor B, and can provide the enable control signals of the A-axis motor (i.e., motor A) and the B-axis motor (i.e., motor B) to the motor driver 3 to control the operating status of the dual motors. When the motion controller controls the power supply of the dual motors, the controller digital interface is connected to the analog interface of the motor driver 3, and the enable is activated by the enable open instruction, or the enable is turned off by the enable close instruction.

[0049] Optionally, in an embodiment of the present invention, the controller analog interface is used to receive the output voltage of the motor driver 3 and convert the output voltage into current. Specifically, the controller analog interface mainly receives the output voltage of the motor driver 3, converts the output voltage into current, and then outputs and displays it through the PC control computer 18. When the current is overcurrent, the motion controller outputs a control signal to the motor driver 3, and the motor driver 3 controls the dual motors to stop moving. Figure 2 Motor A and motor B in the figure are dual motors.

[0050] In an embodiment of the present invention, the motor driver 3 can adopt an ESCON50 / 5 driver, which mainly receives enable instructions and speed mode working instructions issued by the A-axis control interface and the B-axis control interface, and can also control the movement of motor A and motor B according to the motor movement speed set by the user on the PC control computer 18.

[0051] In the embodiment of the present invention, Figure 2As shown, the ultrasonic detection control system applied to the primary components of a nuclear power plant further includes: a differential to single-ended chip 4 and a single-ended to differential chip 5 .

[0052] The differential-to-single-ended chip 4 converts the differential signals output by the main pipeline ultrasonic scanner 15 and the main steam line ultrasonic scanner 16 into single-ended signals and transmits them to the ultrasonic instrument 9. The single-ended-to-differential chip 5 converts the single-ended signals output by the main bolt ultrasonic scanner 14 into differential signals and transmits them to the axis control interface.

[0053] Specifically, the A-axis and B-axis control interfaces of motion control system 2 receive differential signals. Of the three ultrasonic scanners, the feedback signal from main bolt ultrasonic scanner 14 is a single-ended signal and can be directly transmitted to ultrasonic instrument 9 without signal conversion. However, since the A-axis and B-axis control interfaces receive differential signals, they require signal conversion via a single-ended-to-differential chip 5 to convert the single-ended feedback signal from main bolt ultrasonic scanner 14 into a differential signal. The feedback signals from main pipeline ultrasonic scanner 15 and main steam line ultrasonic scanner 16 are differential signals, and transmission to the A-axis and B-axis control interfaces does not require signal conversion. However, since ultrasonic instrument 9 receives single-ended signals, they require conversion via a differential-to-single-ended chip 4 to single-ended signals.

[0054] like Figure 2 As shown, the ultrasonic inspection and control system for primary components in a nuclear power plant also includes a control cable interface 10. This interface is used to receive feedback signals from a main bolt ultrasonic scanner 14, a main pipeline ultrasonic scanner 15, and a main steam line ultrasonic scanner 16, and transmit these feedback signals to the motion control system 2 and the ultrasonic instrument 9, respectively. Specifically, after the three ultrasonic scanners are placed at the inspected location, they can be connected to the main bolt ultrasonic scanner 14, the main pipeline ultrasonic scanner 15, and the main steam line ultrasonic scanner 16 through the control cable interface 10.

[0055] like Figure 2 As shown, the ultrasonic detection and control system for primary components of a nuclear power plant further includes an optocoupler isolation module 6 ; the optocoupler isolation module 6 is used to perform optical isolation on the limit switch feedback signal and the enable signal of the motor driver 3 . The optocoupler isolation module 6 includes three optocouplers, which primarily perform optical isolation on the limit switch feedback signal and the enable signal of the motor driver 3 , thereby reducing signal interference and improving signal reliability.

[0056] like Figure 2As shown, the motor start-stop logic control module 8 is respectively connected to the axis control interface, the emergency stop switch 13 and the motor driver 3, and is mainly used to receive the emergency stop input signal generated by the emergency stop switch 13, the axis enable signal transmitted by the motion control system 2, the soft emergency stop signal, etc., so as to realize the enabling and emergency stopping of each axis.

[0057] Further, if Figure 2 As shown, the ultrasonic inspection and control system for primary components in a nuclear power plant also includes a motor filter unit 7 disposed between the output terminals of the dual motors and the control cable interface 10. This motor filter unit 7 is used to suppress motor noise and high-frequency electromagnetic interference. This motor filter unit 7 suppresses motor noise and high-frequency electromagnetic interference in the motor cables, ensuring that the servo motor operates normally according to the motion instructions.

[0058] Furthermore, the ultrasonic detection control system applied to the primary components of a nuclear power plant also includes: a communication interface 17; the communication interface 17 is set between the motion control system 2 and the PC control computer 18, and is used to perform communication between the motion control system 2 and the PC control computer 18.

[0059] Furthermore, the ultrasonic inspection and control system for primary components in nuclear power plants also includes an emergency stop switch 13, a heat dissipation system 12, and a power switch 11. The emergency stop switch 13 is connected to the motor start / stop logic control module 8 and the motion control system 2, generating an emergency stop input signal. The heat dissipation system 12 is used to perform heat dissipation operations. The power switch 11 is used to control the on / off function of the heat dissipation system 12.

[0060] Specifically, such as Figure 2 As shown, the main bolt ultrasonic scanner 14, the main pipeline ultrasonic scanner 15, and the main steam pipeline ultrasonic scanner 16 are respectively placed on the corresponding inspected components, and then the control cable interface 10 is connected to the main bolt ultrasonic scanner 14, the main pipeline ultrasonic scanner 15, and the main steam pipeline ultrasonic scanner 16, the 220V power interface is connected to the power module 1, the communication interface 17 is connected to the PC control computer 18, the motion control system 2 is connected to the ultrasonic instrument 9 through the ultrasonic encoder line, the power switch 11 is turned on, the cooling system 12 starts working, the motion control system 2 is powered on, and the control system is connected through the PC control computer 18 PING (PING is an instruction for the PC control computer 18 to determine whether the motion control system 2 is connected to the PC control computer 18 network cable), the control software on the PC control computer 18 is opened, and the connection is completed.

[0061] After the PC control computer 18 is connected to the motion control system 2, the ultrasonic scanner settings are initialized. Specifically, the PC control computer 18 configures the corresponding PID control parameters, pulse conversion factor K value, limit values, motion speed, range, and other parameters for the main bolt ultrasonic scanner 14, main pipeline ultrasonic scanner 15, and main steam line ultrasonic scanner 16. Simultaneously, the user can load these parameters into the control software. Once loaded, the corresponding inching control, absolute position, relative position movement, and motion speed settings can be completed. The ultrasonic acquisition software connects to the ultrasonic instrument 9 and completes the loading of ultrasonic acquisition parameters.

[0062] Once the control software completes the initialization of the ultrasonic scanner and matches it with the ultrasonic acquisition software coordinates and acquisition plan, ultrasonic testing can be performed according to the acquisition plan.

[0063] The present invention requires only a single motion control system 2 to control three ultrasonic scanners, meeting the control and ultrasonic acquisition requirements for the main bolt ultrasonic scanner 14, the main pipeline ultrasonic scanner 15, and the main steam line ultrasonic scanner. This reduces the number of control systems and equipment remanufacturing costs, significantly improving the system's cost-effectiveness and reliability.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0065] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0066] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0067] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. All equivalent variations and modifications within the scope of the claims of the present invention are intended to be covered by the claims of the present invention.

Claims

1. An ultrasonic detection control system for primary components of a nuclear power plant, characterized in that: include: Power supply module, motion control system, motor driver, motor start-stop logic control module, ultrasonic instrument, main bolt ultrasonic scanner, main pipeline ultrasonic scanner, main steam pipeline ultrasonic scanner and PC control computer; The PC control computer is used to set parameters of the main bolt ultrasonic scanner, the main pipeline ultrasonic scanner, and the main steam pipeline ultrasonic scanner, and output and display ultrasonic detection data; The power module is used to provide electrical energy; The motion control system is used to send motion control instructions to the motor driver and receive an emergency stop input signal and generate an emergency stop instruction according to the emergency stop input signal; The motor driver is used to output corresponding drive signals according to the motion control instructions sent by the motion control system to control the movement of the dual motors; The motor start-stop logic control module is used to control the enable, close and emergency stop of each axis according to the enable signal sent by the motion control system and the emergency stop input signal; The ultrasonic instrument is used to receive feedback signals from the main bolt ultrasonic scanner, the main pipeline ultrasonic scanner, and the main steam pipeline ultrasonic scanner; The main bolt ultrasonic scanner, the main pipeline ultrasonic scanner and the main steam line ultrasonic scanner are used to perform ultrasonic testing according to motor drive signals.

2. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 1, characterized in that: The motion control system includes: a motion controller, a controller digital interface, an axis control interface and a controller analog interface; The motion controller is used to perform system control; The controller digital interface is used to perform input / output of digital signals; The controller analog interface is used to input analog signals.

3. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 2, characterized in that: Also includes: Differential to single-ended chips and single-ended to differential chips; The differential-to-single-ended chip is used to convert the differential signals output by the main pipeline ultrasonic scanner and the main steam pipeline ultrasonic scanner into single-ended signals and transmit them to the ultrasonic instrument; The single-ended to differential chip is used to convert the single-ended signal output by the main bolt ultrasonic scanner into a differential signal and transmit it to the axis control interface.

4. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 1, characterized in that: Also includes: Control cable interface; The control cable interface is used to receive feedback signals from the main bolt ultrasonic scanner, the main pipeline ultrasonic scanner, and the main steam pipeline ultrasonic scanner, and transmit the feedback signals to the motion control system and the ultrasonic instrument respectively.

5. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 1, characterized in that: Also includes: Communication interface; The communication interface is provided between the motion control system and the PC control computer, and is used for performing communication between the motion control system and the PC control computer.

6. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 4, characterized in that: Also includes: A motor filter unit is provided between the output end of the dual motor and the control cable interface; The motor filter unit is used to suppress motor noise and high-frequency electromagnetic interference.

7. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 1, characterized in that: Also includes: Optocoupler isolation module; The optical coupling isolation module is used to perform optical isolation on the limit switch feedback signal and the motor driver enable signal.

8. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 2, characterized in that: The controller digital interface includes: limit switch signal input, emergency stop signal input, general signal input and emergency stop signal output; The axis control interface includes: an A-axis control interface and a B-axis control interface; the A-axis control interface and the B-axis control interface respectively send an enable control signal to the motor driver according to the control of the motion controller; The controller analog interface is used to receive the output voltage of the motor driver and convert the output voltage into current.

9. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 1, characterized in that: Also includes: Emergency stop switch, cooling system and power switch; The emergency stop switch is connected to the motor start-stop logic control module and the motion control system respectively, and is used to generate the emergency stop input signal; The heat dissipation system is used to perform heat dissipation operations; The power switch is used to control the on / off of the heat dissipation system.

10. The ultrasonic detection and control system for primary components of a nuclear power plant according to claim 1, characterized in that: The power supply module is a power supply with three voltage levels.

Images