Heat tracing cable state monitoring system and monitoring method based on wireless network transmission

Abstract

The invention discloses a heat tracing cable state monitoring system and method based on wireless network transmission. At present, a power plant heat tracing cable is not provided with state monitoring, and a running state of the heat tracing cable is monitored only through daily inspection of maintainers and cannot be monitored in real time. The system comprises a Pt100 thermal resistance temperature measurement element (4), wherein the Pt100 thermal resistance temperature measurement element is connected with a temperature acquisition system (3), the temperature acquisition system is connected with a wireless acquisition terminal DTU (2), the wireless acquisition terminal DTU is connected with the Internet (13) through an antenna (1), the wireless acquisition terminal DTU is connected with a state acquisition system (6), the state acquisition system is connected with a state relay (7) and a heat tracing cable structure (5), the Internet is connected with a firewall (12) through a telecommunication network, the firewall is connected with a switch (11), the switch is connected with a data communication server (10), and the data communication server is connected with a computer control system (9). The heat tracing cable state monitoring system is used for wireless network transmission.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to a heating cable state monitoring system and monitoring method based on wireless network transmission. Background technique [0002] During the severe cold weather in winter, the thermal control steam and water instrument pipes arranged outdoors in each thermal power plant are equipped with heat tracing cables in order to prevent freezing and cause measurement failures. The maintenance personnel routinely inspect and monitor the running status of the heating cable, which cannot realize real-time monitoring. Once the heat tracing cable is damaged and is not found in time, it will cause measurement failure, especially after entering the protection, adjustment and other system measurement points, it will lead to protection malfunction and adjustment failure, resulting in serious consequences. Failure to deal with the failure in time leads to the occurrence of abnorm...

AI Technical Summary

Problems solved by technology

[0002] During the severe cold weather in winter, the thermal control steam and water instrument pipes arranged outdoors in each thermal power plant are equipped with heat tracing cables in order to prevent freezing and cause measurement failures. The daily inspection of the maintenance personnel monitors the running status of the heating cable, which cannot realize real-time monitoring

Once the heat tracing cable is damaged and is not found in time, it will cause measurement failure, especially after entering the protection, adjustment and other system measurement points, it will lead to protection malfunction and adjustment failure, resulting in serious consequences. Failure to deal with the failure in time leads to the occurrence of abnormal events that lead to the shutdown of the unit. Therefore, real-time monitoring of the operation status of the heating cable is particularly important for the safe and stable operation of the thermal power plant in the severe winter season; The status signals and temperature measuring points of each heating cable in the heating cable are transmitted to the remote monitoring system through the cable, which has disadvantages such as difficult construction, high cost, and long construction period; in view of the above problems, we have designed and developed a heat tracing system based on wireless network transmission. The cable status monitoring system can greatly reduce the difficulty of construction and save a lot of renovation costs

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