Online verification method for thermal monitoring instrument of power plant
A technology for thermal instruments and monitoring instruments, applied in testing/calibration devices, instruments, measuring devices, etc., which can solve the problems of calibration, poor timeliness and flexibility of calibration, and difficulty in judging the specific source of data deviation, etc., to reduce additional Effects of tolerances, guaranteed timeliness and flexibility
Active Publication Date: 2021-12-10
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Problems solved by technology
[0003] Laboratory value traceability is an important means to ensure the accuracy and reliability of thermal instruments. The current technology generally uses periodic verification / calibration to complete the calibration of thermal instruments. This method needs to be carried out when the unit is shut down. This method has the following disadvantages. First, it is only for independent instrument calibration, and it is impossible to carry out the whole system calibration, and it is difficult to judge the specific source of data deviation. The timeliness and flexibility of the test are poor; the third is that the difference between the laboratory environmental conditions and the field environmental conditions will bring large additional errors
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[0020] The present invention is not limited to the following examples in connection with the accompanying drawings.
[0021] Embodiment.
[0022] See Figure 1 to 3 In the present embodiment, a power plant thermal monitoring meter is online calibration method, including standardizer 1. Online thermal instrument 2, data acquisition system 3, thermal monitoring system 4, and verification analysis system 5, steps are as follows:
[0023] The first step is based on the category and mounting position of the verified online thermal instrument 2, and the corresponding file library is established in the verification analysis system 5. For example, the hot engine meter 2 is a pumping force, and the position is located at a steam of steam. On the pipeline, the file library is named "a pumping force" while entering the performance parameters of the instrument. The specific test scheme and power plant values should be communicated before the test, and the test begins to the test end time per...
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The invention discloses an online verification method for a thermal monitoring instrument of a power plant, which belongs to the field of thermal control of the power plant. The system comprises a standard device, an online thermotechnical instrument, a data acquisition system, a thermotechnical monitoring system and a verification analysis system. The standard device can measure parameters such as temperature, pressure and flow during operation of a power plant on line, the standard device is connected with the data acquisition system and realizes real-time data transmission, the online thermotechnical instrument is connected with the thermotechnical monitoring system, data of the data acquisition system and the thermotechnical monitoring system are transmitted to the verification analysis system in real time, and time synchronization is kept. Compared with the prior art, online verification of the thermotechnical monitoring instrument in operation of a power plant is realized, on the premise of no shutdown, real-time calibration of the online thermotechnical instrument can be flexibly completed, disassembly and reassembly of the instrument are avoided, accuracy and reliability of monitoring data of a unit in operation are improved, and safe and stable operation of the unit is guaranteed.
Description
Technical field [0001] The present invention belongs to the field of thermal control of the power plant, in particular to a power plant thermal monitoring meter online calibration system and check method, and is used for the normal operation of the unit to realize the pressure instrument, temperature meter, flow meter and other online verification. Background technique [0002] The thermal instrument is an important part of the power plant. It is an indispensable device to realize the automation of power plant automation. It is also an important foundation for safe and stable operation of the power plant. Especially the current industry encourages and promotes the development of digital power plants and smart power plants and thermal instruments. Sex and reliability play a positive and important role. [0003] Laboratory quantity traceability is an important means of ensuring accurate and reliable thermal instrument. The prior art generally uses cycle verification / calibration t...
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IPC IPC(8): G01D18/00
CPCG01D18/00G01D18/002
Inventor 陈浩廖永浩韩海燕徐军锋李佳钰杨帆
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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