Safety evaluation system for temperature tube socket of pressure-bearing component of thermal power generating unit
A technology for pressure-bearing components and thermal power units, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., and can solve problems such as potential personal safety hazards, fatigue failures, and large failure ratios of temperature tube sockets and casings on site.
Pending Publication Date: 2022-03-11
中国大唐集团科学技术研究总院有限公司华北电力试验研究院 +1
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Problems solved by technology
Among these pipe seat cracking accidents, the temperature pipe seat casing has a large proportion of failures. In order to ensure the accuracy of temperature measurement, the temperature pipe seat needs to be inserted into the pressure-bearing part. After running for a long time, it is prone to fatigue failure, causing unplanned shutdown of the unit and bringing hidden dangers to personal safety on site
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[0053] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0054] This embodiment provides a thermal power unit pressure component temperature socket safety assessment system, which is characterized in that it includes:
[0055] The influence value acquisition module of the state quantity of the temperature pipe base is used to obtain the influence value of the state quantity of the temperature pipe base according to the degree of influence of the state quantity of the temperature pipe base on the safety of the thermal power unit temperature bushing pipe base; the state quantity includes structure, material, Welding, inspection, operation, working condition, service time;
[0056] The safety evaluation module of the temperature s...
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The invention relates to a thermal power generating unit pressure-bearing component temperature tube seat safety evaluation system, which comprises a temperature tube seat state quantity influence value acquisition module used for acquiring a temperature tube seat state quantity influence value according to the influence degree of the temperature tube seat state quantity on the thermal power generating unit temperature sleeve seat safety; the state quantity comprises structure, material, welding, inspection, operation, working condition and service time; the temperature sleeve seat safety evaluation module is used for obtaining a temperature sleeve seat safety evaluation value TS through a temperature sleeve seat safety evaluation calculation formula based on the obtained state quantity influence value; the temperature sleeve seat safety state grade evaluation module is used for evaluating the temperature sleeve seat safety evaluation value TS according to the temperature sleeve seat safety evaluation value TS; and obtaining the safety state grade of the temperature sleeve seat. According to the invention, quantitative evaluation of the service safety of the in-service unit temperature sleeve seat can be realized.
Description
technical field [0001] The invention relates to the technical field of thermometer protection devices, in particular to a safety evaluation system for temperature pipe sockets of pressure-bearing components of thermal power units. Background technique [0002] In recent years, along with the peak shaving requirements of thermal power units, high-temperature and high-pressure pipe sockets and casing fillet welds frequently leak, such as figure 1 The installation structure diagram of the thermometer bushing on the high-pressure main steam valve is shown, 1 is the thermometer bushing, 2 is the weld seam, and 3 is the pressure pipe wall. Falling off; the steam sampling pipe of a 600MW unit in a domestic power plant cracked along the weld fusion line, etc. Among these pipe seat cracking accidents, the temperature pipe seat casing has a large proportion of failures. In order to ensure the accuracy of temperature measurement, the temperature pipe seat needs to be inserted into the...
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IPC IPC(8): G01N33/20G01N33/2045
CPCG01N33/20G01N33/2045
Inventor 马志宝蔡文河贾凯杰董树青杜双明张学星郭德瑞高大伟李晶
Owner 中国大唐集团科学技术研究总院有限公司华北电力试验研究院