Jiangsu's first batch of metropolitan coal electrical units completed the Yanshou evaluation testing test

On June 28, Jiangsu Ligang Electric Power Co., Ltd. No. 1 350,000 kilowatt coal electrical units successfully completed the Yanshou evaluation testing test, which marked Jiangsu's first batch of coal -fired generators with the conditions of extension transformation. With "battery life" conditions.

It is understood that Jiangsu currently has 59 300,000 kilowatt -class coal -electrical units in service, most of which is put into production in the 1990s. It is deeply embedded in the local energy supply structure. The peak adjustment is flexible and reliable. It plays an important role in Jiangsu's energy supply chain. Taking Eligang Electric Power Company as an example, its 4 350,000 kilowatt units have generated 8.45 billion kilowatt -hours last year and 2.374 million tons of heating. The company will increase the heating capacity of 300 tons/hour as planned and participate in the regional power grid at the regional power grid. Deep peak. "Our factory uses coal -fired coupling sludge power generation technology, and also undertakes social sludge treatment tasks of more than 60 % of Jiangyin City. If the exit runs, the regional electrical energy, thermal energy supply, and the pressure of social environmental protection will be tight. "Wang Xiaobin, chief engineer of Ligang Electric Power Company, said that the role of 300,000 kilowatts of units is particularly obvious in high -density areas in the load in southern Jiangsu.

In recent years, in response to the densely present period of 300,000 kilowatt -class coal electrical units in the province, the State Energy Administration, the Provincial Energy Administration, Energy Supervision Office and other departments have successively issued documents to clarify that the coal electrical units with a period of 30 years or 200,000 hours have been clarified. If the upper limit of the safe operation life is not reached, in the case of ensuring relevant standards and requirements such as safety, environmental protection, and energy consumption, in principle, it must be extended to operate. With the application for power generation enterprises and approved by the competent department, in March 2022, the first batch of 400,000 kilowatt -class coal -electrical units in Jiangsu was launched and the evaluation was launched. Technology Co., Ltd. implemented a long -term inspection and evaluation work of the Period Coal Electric Units.

"We conduct a comprehensive physical examination of key components of the crew to maximize the health level of the unit's equipment, and then through the later parameter analysis, comprehensive calculation, and overall evaluation, objectively reflect the crew's" actual age 'and the extension. "Fangtian Company's unit Yanshou Wang Shutao, the person in charge of the test project, said that on -site testing and testing work strictly in accordance with the unit life evaluation method and technical specifications, and the performance of key metal components, electrical system performance, coal consumption, water consumption, air pollution discharge and other key indicators for comprehensive testing Evaluation, the detection and life assessment of metal components are the decisive factor.

It is understood that most of the metal components of the coal electrical unit run in high temperature and high pressure environments, coupled with the affected by corrosion, fatigue, peak adjustment operation, etc., the material materials will gradually deteriorate, and the mechanical properties will degenerate. "The metal components of the metal unit of the metal coal power unit were conducted in an all -round test, and the overall judgment of whether the performance of the metal components of the unit was intact and whether the Yanshou unit could run normally." Liang Peng, member of the Fangtian Company Unit Yanshou Test Test Project, introduced. The project team introduced. Comprehensive use of ultrasonic detection, ray detection, magnetic powder detection, penetration detection, ultrasonic thickness, gold phase analysis, hardness testing and other technical means, more than 40 categories of 300,000 kilowatt coal electrical units, thousands of metal components Comprehensive and precise testing.

"For some alien pipes, we will conduct on -site surveying, mapping and modeling analysis. In addition, some components will be sampled and sent to the company's laboratory for high temperature, fatigue, stress analysis and other tests to determine whether the performance status of the relevant component conforms to continuing to serve in service. Requirements. "Wang Shutao introduced, especially important high -temperature components, its high temperature durability test takes thousands of hours, and the test test cycle of the single unit is more than one month.

"The results of the on -site assessment test match with our expectations, strengthening our stable production and reliable supply, especially at the confidence of stabilizing the stable period during peak hours, and it also helps improve the safe operation level of the unit during the extension period." Wang Xiaobin said.

It is understood that Jiangsu Changshu Power Generation Co., Ltd. No. 1, No. 2, 4, and Jiangsu Ligang Electric Power Co., Ltd. Unit 1 has completed the Yanshou evaluation testing work. During the "14th Five -Year Plan" period, there will be 4 300,000 kilowatt -class coal electrical units in Jiangsu to implement Yanshou evaluation.

(Zhang Xiaomin Liu Yunjie)

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