On April 24, 2025, the "2025 Smart Power Plant Forum" jointly hosted by the Technology Transfer and Transformation Center of North China Electric Power University, Zhongguancun Huadian Energy and Power Industry Alliance and other units kicked off in Beijing.

At this forum, Beijing Allinby Technology Co., Ltd. participated with its innovative acoustic temperature measurement solution for power plant furnaces and extensive application achievements, and delivered a speech at the conference. Aimed at monitoring the temperature field inside power plant boilers, the solution aims to promote the green and low-carbon transformation of the thermal power industry and contribute to achieving the "double carbon" goals, attracting the attention of many attendees and becoming a highlight of the forum.   In the main venue of the forum in the afternoon, Mr. Ren, Technical Director of Allinby, delivered a keynote speech to the attendees, detailing the company's acoustic-based temperature measurement solution for power plant boilers. He pointed out that with the vigorous development of new energy power generation, thermal power plants often face challenges such as short-term deep peak regulation, long-term low-load combustion, and coal blending. The acoustic temperature measurement solution can timely and accurately obtain temperature field information inside boilers, thereby better guiding boiler operation and providing a new means for power plants to further reduce energy consumption and emissions while increasing efficiency and reducing costs.

The acoustic temperature measurement solution is based on the functional relationship between sound velocity and medium temperature. By deploying multiple sets of acoustic wave transmitting and receiving devices around the furnace walls of the furnace cross-section, the CT reconstruction technology is used to obtain the two-dimensional temperature field distribution of the temperature measurement plane. The system has a measurement range of -100°C to 2500°C, an accuracy of 1%, a measurement cycle as short as 0.3 seconds for a single path, and is unaffected by furnace vibration, expansion, and particulates. The software system has functions such as image display, data processing, and DCS communication. It can also realize three-dimensional display of the temperature field inside the furnace, facilitate real-time monitoring of the combustion status, provide information on uneven burning and overheating, and historical data tracing. It has self-checking and fault alarm functions and can coordinate with other auxiliary systems for automatic adjustment.