Practical Application of Electromagnetic Hydraulic Slow Shut

Shandong Rongcheng Water Company in the feed pump outlet has a manual gate valve (ie, pump control valve) and check valve to ensure that the pump light start, stop the pump to prevent media back and eliminate the pump on the pump. However, because the pump control valve is a manual gate valve, the pump must be manually operated during the start-up and stop of the pump. The operating time is long and arbitrary and the labor intensity is large. Meanwhile, due to the frequent opening and closing of the manual gate valve, the flange leakage problem is difficult to solve , The instantaneous closure of the original check valve often occurs a lot of water hammer impact, water pump and pipe network system there is a security risk. In April 2005, Chongqing Gute Water Supply and Drainage Equipment Co., Ltd. purchased the electromagnetic-hydraulic slow-closing sluice valve (commonly known as Multi-function Energy Saving Valve), which ideally solved the above problems and improved the reliability of water supply safety. Pumping station automation operation. one. Electromagnetic - Hydrodynamic slow closing gate valve Introduction: The valve relies on the medium pressure in its own tube as the power source. It can realize automatic control, remote control, centralized control, multi-point control and pump valve under the cooperation of conventional control and PLC electronic control equipment Integration. As a result, the operating procedure is simplified, the labor intensity of the workers is reduced, and the valve automatically closes sooner and later in the event of a power outage. Because the process of closing the valve is divided into two stages of quicker and slower completion, it can effectively prevent and eliminate the damage to the pipe network equipment caused by dangerous water hammer. two. Use effect: 1. Simplify the control system: the use of "electromagnetic - hydraulic slow closure gate valve" to achieve the integration of mechanical and electrical control. When the pump is started, press the pump start button, the pump starts to run, when the pump reaches normal operation, the valve automatically opens slowly after the first slow; off the pump, press the pump stop button, the valve starts to slow down quickly after the close, When fully closed, the pump automatically stops running, suddenly power outage, the valve automatically returns to the media using the first fast and slow after the closure. The valve does not require any additional power, can be achieved directly on the pump start and stop control, injustice to ensure that the pump motor light start, but also completely solve the sudden power outage caused by water hammer damage, media back problems, improve the water supply Safe and reliable. 2. Eliminate the effect of water hammer ideal to open the pump, open the valve, stop the pump, off the valve is very smooth, no noise, vibration, close the valve tightly, is very ideal to achieve the purpose of a valve. 3. Maintenance and Safety Due to its well-designed equipment and easy maintenance, it is easy and reliable to buy spare parts. Due to the low voltage 24 VDC supplied by the solenoid valve, it meets the requirements of national and international electrotechnical committees.