Ultrasonic inspection system
By introducing an emergency stop circuit module into the nuclear power equipment pipeline inspection system, the problem of the existing system's inability to interrupt inspection in a timely manner has been solved, achieving rapid stopping and improved safety.
Patent Information
- Application Number
- CN202520134583.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Existing nuclear power equipment pipeline inspection systems cannot interrupt the inspection process in a timely manner when abnormalities are detected, leading to safety hazards.
Design an ultrasonic testing system, comprising a control box, a scanning frame, a drive motor, a phased array ultrasonic instrument, and a host computer, and incorporate an emergency stop circuit module to quickly stop the testing by shutting off the motor control level.
It enables the detection process to be stopped quickly when an anomaly is detected, improving the safety of the detection and the convenience of the system.
Smart Images
Figure CN223649128U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nuclear power plant pipeline inspection technology, and more specifically, to an ultrasonic inspection system. Background Technology
[0002] During the operation of nuclear power equipment, its pipelines inevitably experience fatigue due to long-term operation. Therefore, it is necessary to conduct thermal fatigue crack detection on various pipelines in the nuclear power system, such as primary loop auxiliary pipelines, to prevent pipeline abnormalities from causing abnormal operation of the entire nuclear power system. In the specific detection process, an automated ultrasonic testing system is usually used. However, in the current system, the entire detection process cannot be effectively interrupted when an abnormality occurs. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an ultrasonic testing system that addresses the aforementioned technical deficiencies of the prior art.
[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct an ultrasonic testing system for pipeline inspection in nuclear power plants, including: a control box, a scanning frame, a drive motor, a phased array ultrasonic instrument, and a host computer;
[0005] The host computer is connected to the control box and is used for data communication with the control box;
[0006] The drive motor is connected to the scanning frame and the control box, and is used to receive the motor control level output by the control box and drive the scanning frame to move axially or circumferentially.
[0007] The phased array ultrasonic instrument is connected to the control box and is used to receive the phased array signal from the control box to control the detection signal of the phased array ultrasonic instrument; wherein the probe of the phased array ultrasonic instrument is correspondingly set on the scanning frame and is used to adjust the positional relationship with the detection target during the movement of the scanning frame;
[0008] The control box is equipped with an emergency stop circuit module, which is connected to the drive motor to shut off the motor control level.
[0009] Preferably, in the ultrasonic testing system of this utility model, the control box is provided with a motor drive and control integrated module, the drive motor is connected to the drive signal port of the motor drive and control integrated module, and the host computer is connected to the network connection port of the motor drive and control integrated module.
[0010] Preferably, in the ultrasonic testing system of this utility model, the emergency stop circuit module includes: an emergency stop switch, a relay, and a contactor;
[0011] The first terminal of the emergency stop switch is connected to the first power supply voltage, and the second terminal of the emergency stop switch is grounded through the coil of the relay;
[0012] The first terminal of the first contact switch in the relay is connected to the second power supply voltage, the second terminal of the first contact switch in the relay is connected to the first terminal of the coil in the contactor, and the second terminal of the coil in the contactor is grounded;
[0013] The first end of the contactor's contact switch is connected to the first end of the motor drive and control integrated module, the second end of the contactor's contact switch is connected to the first end of the drive motor, and the second end of the drive motor is connected to the second end of the motor drive and control integrated module.
[0014] Preferably, in the ultrasonic testing system of this utility model, the drive motor includes a first drive motor for driving the scanning frame to move axially and a second drive motor for driving the scanning frame to move circumferentially.
[0015] The contactor includes a first contact switch and a second contact switch.
[0016] Preferably, in the ultrasonic testing system described in this utility model,
[0017] The first end of the first contact switch of the contactor is connected to the first drive signal terminal of the integrated motor drive and control module, the second end of the first contact switch of the contactor is connected to the first end of the first drive motor, and the second end of the first drive motor is connected to the second drive signal terminal of the integrated motor drive and control module.
[0018] The first end of the second contact switch of the contactor is connected to the third drive signal terminal of the integrated motor drive and control module, the second end of the second contact switch of the contactor is connected to the first end of the second drive motor, and the second end of the second drive motor is connected to the fourth drive signal terminal of the integrated motor drive and control module.
[0019] Preferably, in the ultrasonic testing system of this utility model, the contactor includes a first contactor and a second contactor;
[0020] The second end of the first contact switch in the relay is connected to the first end of the coil in the first contactor and the second contactor, and the second end of the coil in the first contactor and the second contactor is grounded;
[0021] The first end of the contact switch of the first contactor is connected to the first drive signal terminal of the integrated motor drive and control module, the second end of the contact switch of the first contactor is connected to the first end of the first drive motor, and the second end of the first drive motor is connected to the second drive signal terminal of the integrated motor drive and control module.
[0022] The first end of the contact switch of the second contactor is connected to the third drive signal terminal of the integrated motor drive and control module, the second end of the contact switch of the second contactor is connected to the first end of the second drive motor, and the second end of the second drive motor is connected to the fourth drive signal terminal of the integrated motor drive and control module.
[0023] Preferably, in the ultrasonic testing system of this utility model, the first end of the second contact switch in the relay is connected to the third power supply voltage, and the second end of the second contact switch in the relay is connected to the level input port of the motor drive and control integrated module.
[0024] Preferably, in the ultrasonic testing system of this utility model, the emergency stop circuit module further includes an indicator circuit;
[0025] The first terminal of the indicator circuit is connected to the fourth power supply voltage via the third contact switch in the relay, and the second terminal of the indicator circuit is grounded.
[0026] Preferably, in the ultrasonic testing system of this invention, the indicating circuit includes an indicator light.
[0027] Preferably, in the ultrasonic testing system of this utility model, the scanning frame is further provided with a limit switch corresponding to the position of the drive motor;
[0028] The limit switch is connected to the IO control port of the motor drive and control module. It is used to generate a trigger level when the position of the drive motor reaches the preset position and send it to the motor drive and control module so that the motor drive and control module can turn off the output of the motor control level.
[0029] The ultrasonic testing system of this utility model has the following advantages: it can quickly stop the testing system to ensure the safety of the testing process. Attached Figure Description
[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0031] Figure 1 This is a schematic diagram of an embodiment of an ultrasonic testing system according to the present invention;
[0032] Figure 2 This is a partial circuit diagram of an embodiment of an ultrasonic testing system according to the present invention.
[0033] Explanation of reference numerals in the attached figures:
[0034] Control box: 100, scanning frame: 200, drive motor: 300, phased array ultrasonic instrument: 400, emergency stop circuit module: 110, motor drive and control integrated module: 114, emergency stop switch: 111, relay: 112, contactor: 113, indicator light: 115, encoder: 116, limit switch: 600. Detailed Implementation
[0035] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0036] Figure 1 This is a schematic diagram of the structure of an ultrasonic testing system provided in an embodiment of the present invention. Figure 2 This is a partial circuit diagram of an ultrasonic testing system according to an embodiment of the present invention. Figure 1 and Figure 2 The image shows an embodiment of an ultrasonic testing system according to this invention. This ultrasonic testing system is mainly used for pipeline inspection in nuclear power plants. Figure 1 The first embodiment of the ultrasonic testing system of this utility model shown includes: a control box 100, a scanning frame 200, a drive motor 300, a phased array ultrasonic instrument 400, and a host computer 500; the host computer 500 is connected to the control box 100 and is used for data communication with the control box 100; the drive motor 300 is connected to the scanning frame 200 and the control box 100, and is used to receive the motor control level output by the control box 100 and drive the scanning frame 200 to move axially or circumferentially. The phased array ultrasonic instrument 400 is connected to the control box 100 and is used to receive the phased array signal from the control box 100 to control the detection signal of the phased array ultrasonic instrument 400; wherein the probe of the phased array ultrasonic instrument 400 is correspondingly set on the scanning frame 200 and is used to adjust the positional relationship with the detection target during the movement of the scanning frame 200; the control box 100 is provided with an emergency stop circuit module 110, which is connected to the drive motor 300 to shut off the motor control level.
[0037] Specifically, in the ultrasonic testing system, the host computer 500 communicates with the control box 100 to transmit data during the operation of the ultrasonic testing system. Simultaneously, during the operation of the ultrasonic testing system, the control box 100 outputs a motor control level to control the drive motor 300. The drive motor 300's operation is controlled by an encoder 116 in the control box. The drive motor 300 drives the scanning frame 200. The phased array ultrasonic transducer's probe is mounted on the scanning frame 200. The movement of the scanning frame 200 drives the probe to adjust its position relative to the target, enabling detection of targets at different locations. An emergency stop circuit module 110 is installed in the control box 100. This module shuts off the motor control level, controlling the drive motor 300 to stop immediately. This ensures that the entire ultrasonic testing system can be quickly stopped in an emergency. The entire system adopts a modular design to ensure ease of use and maintenance. The control box 100 includes a housing and internal control circuitry. The control process of the control box 100 over the phased array ultrasonic instrument 400 can be achieved by generating phased array signals through an internally configured coded signal output module and outputting them to the phased array ultrasonic instrument 400. In a specific embodiment, the coded signal output module includes a SICT-102 differential-to-single-ended circuit module.
[0038] In one embodiment, the control box 100 includes a motor drive and control integrated module 114. The drive motor 300 is connected to the drive signal port of the motor drive and control integrated module 114, and the host computer 500 is connected to the network connection port of the motor drive and control integrated module 114. Specifically, the control box 100 includes the motor drive and control integrated module 114, which controls the operation of the drive motor 300. The motor drive and control integrated module 114 includes, but is not limited to, a DMC-4143 series high-precision control board. This controller board has advantages such as high-speed communication, non-volatile program storage, high-speed encoder feedback reception, and high anti-interference (EMI). The motor drive and control integrated module 114 composed of this control board can support up to four-axis motion control and has the advantages of module miniaturization and easy maintenance. The control box 100 integrated with this control board is portable and miniaturized. The control box 110 adopts a closed, air-circulating design, which can adapt to the harsh nuclear power plant working environment. Meanwhile, the control box 100 connects to external equipment via integrated cables and connectors, enabling on-site operators to quickly assemble and disassemble the control system, making on-site maintenance and replacement of parts more convenient and efficient.
[0039] In one embodiment, such as Figure 2As shown, the emergency stop circuit module 110 includes: an emergency stop switch 111, a relay 112, and a contactor 113; the first terminal of the emergency stop switch 111 is connected to a first power supply voltage, and the second terminal of the emergency stop switch 111 is grounded through the coil of the relay 112; the first terminal of the first contact switch in the relay 112 is connected to a second power supply voltage, and the second terminal of the first contact switch in the relay 112 is connected to the first terminal of the coil in the contactor 113, and the second terminal of the coil in the contactor 113 is grounded; the first terminal of the contact switch in the contactor 113 is connected to the first terminal of the integrated motor drive and control module 114, the second terminal of the contact switch in the contactor 113 is connected to the first terminal of the drive motor 300, and the second terminal of the drive motor 300 is connected to the second terminal of the integrated motor drive and control module 114.
[0040] Specifically, in the emergency stop circuit module 110, when the emergency stop switch 111 is turned on, the coil of the relay 112 is energized by the first supply voltage, the first contact switch of the relay 112 is activated, the coil in the contactor 113 is energized, and then the contactor 113 actuates, disconnecting the connection between the first terminal of the motor drive control module 114 and the drive motor 300. The drive motor 300 cannot receive the motor control level output by the motor drive control module 114 and is directly turned off, thereby achieving rapid disconnection of the motor. In a specific embodiment, the first supply voltage is used to control the relay 112 and can be a low voltage signal, such as a 5V voltage signal. The second supply voltage is used to control the contactor 113, so a higher voltage signal, such as a 24V voltage signal, can be selected.
[0041] In one embodiment, the drive motor 300 includes a first drive motor for driving the scanning frame 200 to move axially and a second drive motor for driving the scanning frame 200 to move circumferentially. Specifically, in the ultrasonic testing system, a first drive motor and a second drive motor are provided to drive the scanning frame to move axially and circumferentially, respectively. The contactor 113 is used to control the operating states of the first drive motor and the second drive motor, respectively.
[0042] In one embodiment, the contactor 113 includes a first contact switch and a second contact switch. The first end of the first contact switch of the contactor 113 is connected to the first drive signal terminal of the integrated motor drive and control module 114, and the second end of the first contact switch of the contactor 113 is connected to the first terminal of the first drive motor 300. The second terminal of the first drive motor is connected to the second drive signal terminal of the integrated motor drive and control module 114. The first end of the second contact switch of the contactor 113 is connected to the third drive signal terminal of the integrated motor drive and control module 114, and the second end of the second contact switch of the contactor 113 is connected to the first terminal of the second drive motor. The second terminal of the second drive motor is connected to the fourth drive signal terminal of the integrated motor drive and control module. Specifically, the contactor 113 includes a first contact switch corresponding to the first drive motor and a second contact switch corresponding to the second drive motor. In actual operation, when the coil of the contactor is energized, the first contact switch of the contactor 113 controls the integrated motor drive and control module to disconnect the drive circuit of the first drive motor. When the contactor coil is energized, the second contact switch disconnects the drive circuit of the integrated motor drive module from that of the second drive motor. Since the energizing process of the contactor coil is controlled by the emergency stop switch, the first and second drive motors are ultimately stopped simultaneously via the emergency stop switch.
[0043] In another embodiment, the contactor 113 includes a first contactor and a second contactor; the second terminal of the first contact switch in the relay is connected to the first terminal of the coil in the first contactor and the second contactor, and the second terminal of the coil in the first contactor and the second contactor is grounded; the first terminal of the contact switch of the first contactor is connected to the first drive signal terminal of the integrated motor drive and control module, the second terminal of the contact switch of the first contactor is connected to the first terminal of the first drive motor, and the second terminal of the first drive motor is connected to the second drive signal terminal of the integrated motor drive and control module; the first terminal of the contact switch of the second contactor is connected to the third drive signal terminal of the integrated motor drive and control module, the second terminal of the contact switch of the second contactor is connected to the first terminal of the second drive motor, and the second terminal of the second drive motor is connected to the fourth drive signal terminal of the integrated motor drive and control module. Specifically, the contactor 113 includes a first contactor and a second contactor, the first contactor corresponding to the first drive motor, and the second contactor corresponding to the second drive motor. The coils of both the first contactor and the second contactor are energized by an emergency stop switch. When the coil of the first contactor is energized, the contact switch of the first contactor controls the integrated motor drive and control module to disconnect from the drive circuit of the first drive motor. When the coil of the second contactor is energized, the contact switch of the second contactor disconnects the drive circuit of the motor drive control module from that of the second drive motor. Because the energizing process of the coils of the first and second contactors is simultaneously controlled by the emergency stop switch, the first and second drive motors are ultimately stopped simultaneously by the emergency stop switch.
[0044] In one embodiment, the emergency stop switch 111 in the emergency stop circuit module 110 includes, but is not limited to, a push-button switch. That is, the push-button switch can be pressed to enter the conduction state, triggering the stop command of the control motor drive module 114 to stop the drive motor 300 from working.
[0045] Furthermore, the first terminal of the second contact switch in the relay 112 is connected to the third power supply voltage, and the second terminal of the second contact switch in the relay 112 is connected to the level input port of the motor drive control integrated module 114. Specifically, when the emergency stop switch 111 is triggered, causing the relay 112 to be powered on, the second contact switch of the relay 112 actuates, thereby causing the level input port of the motor drive control integrated module 114 to receive the corresponding level to determine the state of the emergency stop switch 111, so as to further perform the corresponding control process. At the same time, the corresponding state information data can also be sent to the host computer 500. For example, the second contact switch of the relay 112 is normally in the off state. At this time, the level input port of the motor drive control integrated module 114 receives a low level, and the emergency stop switch 111 is normally in the off state through this low level. When the emergency stop switch 111 is triggered, the second contact of the relay 112 is turned on, and the level input port of the motor drive control module 114 receives a high level based on the third power supply voltage. The motor drive control module 114 can determine that the emergency stop switch 111 has been triggered based on this high level. Here, ABRT is a level signal, and connecting it to the level input port of the motor drive control module 114 can be considered an input I / O port. A high level signal triggers the internal emergency stop function of the motor drive control module 114. According to the voltage requirements of the level input port of the motor drive control module 114, the third power supply voltage can be a 5V voltage signal.
[0046] In one embodiment, the emergency stop circuit module 110 further includes an indicator circuit; the first terminal of the indicator circuit is connected to a fourth power supply voltage via the third contact switch in the relay 112, and the second terminal of the indicator circuit is grounded. That is, the indicator circuit can indicate the state of the emergency stop switch 111; when the emergency stop switch 111 is in the on state, the third contact switch of the relay 112 is on, and the fourth power supply voltage supplies power to the indicator circuit through the third contact switch of the relay 112, generating corresponding indication information upon power-up. In a specific embodiment, the indicator circuit may include an indicator light 115, which is illuminated upon power-up to indicate the emergency stop state. The color of the indicator light 115 can be selected as needed; for example, a red warning light can be selected to warn of the emergency stop state. The fourth power supply voltage is selected according to the power supply requirements of the indicator light 115; in one embodiment, the fourth power supply voltage is a 5V voltage signal.
[0047] Furthermore, the scanning rack 200 is also equipped with a limit switch 600 corresponding to the position of the drive motor 300. The limit switch 600 is connected to the IO control port of the motor drive and control integrated module 114, and is used to generate a trigger level when the position of the drive motor 300 reaches a preset position and send it to the motor drive and control integrated module 114, so that the motor drive and control integrated module 114 shuts off the output of the motor control level. That is, the operation process of the drive motor 300 can be protected by the limit switch 600. When there are two drive motors 300, there are also two corresponding limit switches. The motor drive and control integrated module 114 receives the trigger signal generated by each limit switch and controls the output process of the corresponding control level of the drive motor 300.
[0048] In the system of this utility model, when the equipment is in operation, the emergency stop input responds immediately in the event of the emergency stop button being pressed, the circuit cable being disconnected, or the relay 112 malfunctioning. The controller stops running and the motion is stopped, which can effectively protect the equipment. At the same time, it adopts an integrated control-drive design with segmented cable arrangement of bus-distribution box-execution unit. The main body cable is built into the mechanical structure, which reduces the difficulty of on-site assembly. It can support four-axis motion control and has the advantages of modular miniaturization and easy maintenance.
[0049] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.
Claims
1. An ultrasonic testing system for use in pipeline inspection at nuclear power plants, characterized in that, include: Control box, scanning frame, drive motor, phased array ultrasonic instrument and host computer; The host computer is connected to the control box and is used for data communication with the control box; The drive motor is connected to the scanning frame and the control box, and is used to receive the motor control level output by the control box and drive the scanning frame to move axially or circumferentially. The phased array ultrasonic instrument is connected to the control box and is used to receive the phased array signal from the control box to control the detection signal of the phased array ultrasonic instrument; The probe of the phased array ultrasonic instrument is correspondingly installed on the scanning frame and is used to adjust the positional relationship with the target being detected during the movement of the scanning frame; The control box is equipped with an emergency stop circuit module, which is connected to the drive motor to shut off the motor control level.
2. The ultrasonic testing system according to claim 1, characterized in that, The control box is equipped with a motor drive and control integrated module. The drive motor is connected to the drive signal port of the motor drive and control integrated module, and the host computer is connected to the network connection port of the motor drive and control integrated module.
3. The ultrasonic testing system according to claim 2, characterized in that, The emergency stop circuit module includes: an emergency stop switch, a relay, and a contactor; The first terminal of the emergency stop switch is connected to the first power supply voltage, and the second terminal of the emergency stop switch is grounded through the coil of the relay; The first terminal of the first contact switch in the relay is connected to the second power supply voltage, the second terminal of the first contact switch in the relay is connected to the first terminal of the coil in the contactor, and the second terminal of the coil in the contactor is grounded; The first end of the contactor's contact switch is connected to the first end of the motor drive and control integrated module, the second end of the contactor's contact switch is connected to the first end of the drive motor, and the second end of the drive motor is connected to the second end of the motor drive and control integrated module.
4. The ultrasonic testing system according to claim 3, characterized in that, The drive motor includes a first drive motor for driving the scanning frame to move axially and a second drive motor for driving the scanning frame to move circumferentially.
5. The ultrasonic testing system according to claim 4, characterized in that, The contactor includes a first contact switch and a second contact switch; The first end of the first contact switch of the contactor is connected to the first drive signal terminal of the integrated motor drive and control module, the second end of the first contact switch of the contactor is connected to the first end of the first drive motor, and the second end of the first drive motor is connected to the second drive signal terminal of the integrated motor drive and control module. The first end of the second contact switch of the contactor is connected to the third drive signal terminal of the integrated motor drive and control module, the second end of the second contact switch of the contactor is connected to the first end of the second drive motor, and the second end of the second drive motor is connected to the fourth drive signal terminal of the integrated motor drive and control module.
6. The ultrasonic testing system according to claim 4, characterized in that, The contactor includes a first contactor and a second contactor; The second end of the first contact switch in the relay is connected to the first end of the coil in the first contactor and the second contactor, and the second end of the coil in the first contactor and the second contactor is grounded; The first end of the contact switch of the first contactor is connected to the first drive signal terminal of the integrated motor drive and control module, the second end of the contact switch of the first contactor is connected to the first end of the first drive motor, and the second end of the first drive motor is connected to the second drive signal terminal of the integrated motor drive and control module. The first end of the contact switch of the second contactor is connected to the third drive signal terminal of the integrated motor drive and control module, the second end of the contact switch of the second contactor is connected to the first end of the second drive motor, and the second end of the second drive motor is connected to the fourth drive signal terminal of the integrated motor drive and control module.
7. The ultrasonic testing system according to claim 3, characterized in that, The first terminal of the second contact switch in the relay is connected to the third power supply voltage, and the second terminal of the second contact switch in the relay is connected to the level input port of the motor drive and control integrated module.
8. The ultrasonic testing system according to claim 3, characterized in that, The emergency stop circuit module also includes an indicator circuit; The first terminal of the indicator circuit is connected to the fourth power supply voltage via the third contact switch in the relay, and the second terminal of the indicator circuit is grounded.
9. The ultrasonic testing system according to claim 8, characterized in that, The indicating circuit includes indicator lights.
10. The ultrasonic testing system according to claim 2, characterized in that, The scanning rack is also equipped with a limit switch corresponding to the position of the drive motor; The limit switch is connected to the IO control port of the motor drive and control module. It is used to generate a trigger level when the position of the drive motor reaches the preset position and send it to the motor drive and control module so that the motor drive and control module can turn off the output of the motor control level.