In recent years, in many production enterprises, there have been frequent shutdown incidents caused by high-temperature faults of high-speed motor slip rings, resulting in significant economic losses for the enterprises. Since the installation positions of high-speed slip rings are on rotating parts, traditional temperature measurement methods are difficult to be used. However, currently, the real-time monitoring of slip ring temperatures mostly adopts manual temperature measuring guns, handheld thermal imagers, and other infrared temperature measurement sensors, but the manual detection method cannot timely detect equipment abnormalities at the early stage of faults, and the fixed infrared temperature sensors have significant limitations, including limited coverage, single temperature values, and inaccurate temperatures.
Over the years, our company has been dedicated to the research of online temperature monitoring systems for mechanical and electrical equipment. We have launched multiple online temperature monitoring systems in various industries and equipment fields. We have also been paying close attention to the users' demands for online temperature monitoring of slip rings. To provide a more intuitive and convenient display of the temperature of the motor slip ring and the operating temperatures of carbon brushes, conductors, etc., we have introduced the ST4000-IT series slip ring temperature infrared thermal imaging online monitoring device. By using infrared thermal imaging technology to conduct real-time monitoring of the temperatures of slip rings, carbon brushes, and other components in the slip ring chamber, we achieve functions such as over-temperature alarm, hot spot tracking, image display, and curve simulation, in order to comprehensively and effectively reduce unplanned shutdown accidents of the generator caused by faults in the conductive rings and carbon brushes.
This device consists of an infrared thermal imaging probe, an on-site receiving unit, and a background imaging system. The thermal imaging probe is installed at an appropriate position in the ring assembly chamber and is firmly fixed with a special bracket to ensure that the irradiation area covers all the areas that need to be monitored. The signal is then transmitted via a connection line to the receiving unit located beside the machine (in the ring assembly chamber). The receiving unit processes the image and transmits it to the background computer via wired or wireless means.
The on-site receiving instrument adopts a high-performance industrial-grade processor, combined with multiple high-speed Ethernet interfaces, and supports the simultaneous connection of multiple infrared thermal imaging probes (ST4C-IT). The image data collected by the on-site receiving probe is processed and then sent to the background software. It mainly is responsible for the access management of the probe, video stream forwarding, image processing, and heat map diversion forwarding, etc.
The on-site receiving instrument is fixed at an appropriate position beside the motor, and is connected to the probe via a wired connection. It can be equipped with infrared thermal imaging probes and communicates with the background through network cables, optical fibers, 4G, etc.
The background imaging software serves as the human-computer interaction interface and is embedded within the on-site receiving instrument. Users can access the designated address on a computer with a browser and directly operate and view the software without the need for downloading or installation.
The entire system can achieve comprehensive problem detection for components such as carbon brushes and slip rings of high-voltage motors through the simplest modification method (installing infrared thermal imaging probes), without the need for manual intervention. It operates continuously 24/7. When the temperature rises due to equipment aging, the system will issue an alarm to effectively control the deterioration of the faults and prevent major accidents. This further enhances the safety and reliability of equipment operation.
For the functions and parameters of the infrared thermal imager, please refer to the product center.
Technical parameters of on-site receiving device:
Project | Parameters | Remarks |
Overall dimensions | 80*65*45mm | Overall dimensions of the main body |
Working voltage | DC 12V | Customizable |
Working temperature | -40~85℃ | |
Working humidity | 0％～90％ | non-condensing |
Number of accessible probes | 3/6 | Customizable |
Interface | RJ-45 |
