Typical oil product fire hazard evaluation system in wind turbine chamber and evaluation method thereof

Abstract

The invention relates to a typical oil product fire hazard evaluation system in a wind turbine chamber and an evaluation method thereof. A thermal gravimetric analyzer is used for acquiring key thermal decomposition characteristic parameters of a blower fan oil product in an air atmosphere in different temperature increasing speeds. A cone calorimeter is used for acquiring fire reaction characteristic parameters and derivative parameters in different radiation strengths. A fire evaluation process of the wind turbine chamber is divided into fire generating, spreading, flashover, sufficient developing and attenuating. A three-layer fire hazard evaluation structure system in which the oil product corresponds with a fire and pyrolysis characteristic, a heat and exhaust gas discharging capability and a heat and exhaust gas hazard characteristic in different stages is constructed. The system and the method have advantages of performing pyrolysis and fire reaction characteristic representation on a main fire load, performing multidimensional correlation and integrated analysis of pyrolysis and combustion, and realizing diversified evaluation to the full-process latent fire hazard of the wind turbine chamber. The system and the method further have advantages of simple operation, clear theoretical basis, reliable experiment result, and high repeatability. The system and the method provide a basis for wind turbine chamber fire application basis research and intrinsic safety treatment.

Description

technical field [0001] The invention relates to an evaluation system and an evaluation method for the fire risk of typical oil products in a wind turbine cabin, belonging to the technical field of wind power generation safety. Background technique [0002] Among all kinds of new energy, wind power technology is relatively mature, has the most conditions for large-scale commercial development, and has relatively low cost. It has huge advantages and has been widely valued by countries all over the world. Although my country's wind power industry started relatively late, it has developed rapidly in recent years. As of the end of 2017, China's new and accumulated wind power installed capacity was 19.66GW and 188.39GW respectively, ranking first in the world. [0003] The wind turbine is mainly composed of the bottom foundation, the tower, the wind turbine cabin and the blades. The wind turbine cabin is the core component of the wind turbine. , yaw system, gearbox, hydraulic sy...

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Problems solved by technology

At present, it is relatively difficult to use full-scale experiments to study the large fire load, various types of fires, complex ventilation conditions and spatial structure problems such as wind turbine cabin fires, and there are many deficiencies.

For example, the Tianjin Fire Department of the Ministry of Public Security and the Taiwan Police College respectively used a physical engine room and a full-scale test model to conduct experimental research on the fire characteristics of the fan and the fire protection system. However, the internal layout of the engine room and the design of the fire source are relatively simple, which is different from the actual fire scene However, using computer technology to simulate fire development has the unique advantages of saving time and cost and obtaining details of physical parameters, and has been valued by more and more research institutions and personnel. Due to the complexity, nonlinearity and randomness of the process, it is still difficult to fully realize the accurate simulation of the fire combustion process under the current technical level.

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