Metal Frame Anchor Metal Frame Anchor Hebei Qianmu Fastener Manufacturing Co., Ltd , https://www.qmjgjfasteners.com
Surge phenomenon is the pumping system fluid flow caused by an abnormal phenomenon, and the rotational stall vibration, cavitation vibration, surge are caused by fluid flow vibration, the development of anti-surge measures should be Find the difference between the three, focusing on traffic, vibration frequency and other factors. So pump system surge phenomenon prevention measures what? Surge prevention measures are mainly the following aspects: (1) complex piping should be avoided with the hump-shaped performance curve of the pump, but the use of flat-down performance curve of the pump. (2) The bypass pipe is installed on the pressure side of the pump, and the part of the pump pressured out of the water pump technology is returned to the suction side, so that the working point is moved from point A to point on the right side of the hump. (3) The flow rate under any conditions not less than, or should be equipped with recirculation pipe or automatic discharge valve. (4) The use of movable vanes to adjust the flow, when the outside world needs to reduce the flow, turning the leaf to make its device angle decreases, so the performance curve down, the critical point to the lower left, so that the output flow decreases, see. (5) the critical point of the line moves to the upper right; on the contrary, the critical point of the performance curve will move to the lower left, thus reducing the unstable area on the performance curve. (6) Suction valve installed in the suction port, when the pipe flow increases, open the suction valve, the performance curve to the upper right point of the critical point of movement; and when the pipeline flow decreases, the small valve off, the performance curve The critical point moves to the lower left to reduce the area of ​​instability on the performance curve. (7) The best control valve or throttle at the pump outlet position. In order to avoid pressure out of the pipeline memory gas. (8) to ensure that the pump runs under normal flow, if the load decreases, the number of units should be put into operation in advance to reduce. (9) Mechanical vibration, water hammer vibration caused a larger flow changes, exacerbating surge intensity. (10) Surge is caused by the uneven flow of fluid, so flow uniformity should be ensured. Although the surge phenomenon is relatively small compared with the industrial water hammer phenomenon, the economic loss caused by the phenomenon is relatively small. However, in the engineering practice, attention should be paid to it, and corresponding preventive and pump system improvement measures should be taken. Further reading: "Industry Leader" magazine article belongs to Internet industry (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor: lindj (QQ / micro-channel:) starting: http : //beng.liuti.cn/ (Service Hotline:)