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자료유형
학술저널
저자정보
저널정보
한국유체기계학회 한국유체기계학회 논문집 유체기계저널 제4권 제4호
발행연도
2001.12
수록면
16 - 21 (6page)

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The field tests on the waterhammer were carried out for PalDang intake pumping station of the metropolitan water supply 5th stage project. The pumping station was equipped with the pump control valve as the main surge suppression device and the surge relief valve as auxiliary. However, the pump control valve had not been early controlled in the planned closing mode, and the slamming occurred to the valve which abruptly closed during the large reverse flow. Because the pressure wave caused by the pump failure was superposed on the slam surge, the upsurge increased so extremely that the shaft of the valve was damaged. It was desirable that the surge relief valve was installed in the pumping station or near the pump exit for the delay of response. After reforming the oil dashpot of the pump control valve, the slamming disappeared and the measured pressure was in fairly good agreement with the results of simulation. In case of three pumps for Φ 2,600 pipeline being simultaneously tripped, the pressure head in the pumping station increased to 95.6m, and the upsurge caused by the emergency stop of four pumps for Φ 2,800 pipeline was 89.6m. We concluded that the pumping station acquired the safety and reliability for the pressure surge.

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2. 실험 및 수치해석 방법

3. 결과 및 검토

4. 결론

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