  Wireless monitoring sensor gradually replaces wired equipment for data
support in petrochemical industry production. And wireless monitoring sensor
with continuous energy supply is necessary and still faces great challenges.
Thermoelectric generator makes it possible to power wireless monitoring sensor
by continuously generating thermal energy from hot fluids in a collection
petrochemical pipeline in any environment. The inability to obtain a larger
temperature difference under TEG's high-temperature condition results in low
energy efficiency, limiting the scheme's application. This work describes a
thermoelectric generation system with an optimized heat sink for wireless
monitoring sensor power supply at high temperature. The system is simple to
install and use and is based on a high-performance passive heat sink with no
power consumption and micro-vibration. We establish a practical prototype
system to demonstrate performance and theoretical verification after analyzing
the system's power loss to achieve high power and high efficiency. The
experimental results show that the system proposed in this work can generate
enough power to power the wireless monitoring sensor for 60 seconds. The
minimum output power is 24.7"mW" at the hot-side of thermoelectric generation
(TEG) temperature of 100 {\deg}C- 190 {\deg}C. The maximum power conversion
efficiency in the considered input voltage range can reach an ideal value.
