原文：
           目前在水厂一级、二级泵站中，水泵的出水口装有双速阀和手动闸阀，在市区各加压站中水泵的出水口装有微阻缓闭止回阀和手动蝶阀，通过几年来的运行看，存在的主要问题是：双速阀启闭不够灵活，电磁四通阀的故障率比较高，低温阀门 不能满足泵站自动化运行的要求；缓闭止回阀的行程难于调试掌握，因而时常出现缓闭止回阀关闭不严水泵倒转现象，如为油压式的养护维修更为麻烦。2001年l0月，公司在义河北泵站中改用株洲南方阀门制造有限公司生产的“多功能水泵控制阀”后，较理想地解决了上述问题，提高了供水安全的可靠性，实现了泵站的自动化运行。

     一、多功能水泵控制阀简介 JD745X系列多功能水泵控制阀，陶瓷阀门是一种全过程自动操作的新型水力阀门，能够全自动实现离心泵开泵时的缓开，停泵时的二阶段快闭与缓闭，防止管道中介质的倒流，该阀可以同时替代水泵出口管路上的操作阀、双速阀、缓闭阀止回阀的水锤消除器。

     二、设计的几大特点 1．主阀板与阀杆形成滑动配合，阀板开度可随流量大小而改变，因而能在接近于零流量时关闭，达到消除水锤的最理想状态。 2．控制腔采用膜片设计，避免了活塞缸式控制腔存在的因阻而产生的开关失灵现象。同时降低了动作压力，膜片材料先用了强化尼龙纤维网加强的聚氯丁橡胶，动作寿命长达65万次。 3．比旋启式止回阀减少用电31％，设计减轻了主阀板重量，采用了流线型宽敞的阀座设计，阻力系数3．8，大大低于阻力系数5．6的旋启式止回阀。 4．维护方便，采用了宽型阀盖，船用阀门无需拆卸连接法兰，即可将阀内组件全部取出。

     三、运行数据 水泵型号8Sh一6A 电机90KW额定转速2950r／min 扬程83m流量224m3／h测试情况： 1．控制阀自动开启时间30一40秒，自动关闭时间10-15秒。 2．启泵后阀门于2min时到达最大开度。 四、使用效果 我们水司于2000年10月使用了钛、镍、锆、蒙乃尔及合金阀门该产品正常运行5个月，累计2000多小时，无任何故障，显示该阀运行状态非常稳定。 1．满足离心泵的闭闸启动要求，能够保证水泵电机轻载启动，无需电气和油压，便可实现直接对水泵进行启停控制，不仅彻底解决了因突然停电而造成管路介质对扬水系统所产生的水锤冲击、介质的回流，而且还大大降低了工人的劳动强度。 2．消除水锤效果理想，停泵时关阀平稳无声响、振动、阀门关闭严密，由于这种控制阀完全依靠水力自控，因此无需专人管理。 消防阀门

“ Multifunctional Pump Control Valve Application in the Reconstruction of Pump Station Automation ”是由中国控制阀网提供的阀门行业新闻，译文仅供参考。另外，中国控制阀网还提供相关产品搜索： CV3000控制阀、 电动控制阀、 气动控制阀、 手动控制阀、 核用控制阀 等。

译文：
         Water level now, two pumping stations, the pump outlet with two-speed valve and manual valve, the pressure in the urban station is equipped with micro-pump outlet check valve and manual Slow Close butterfly, running through several years of view, the main problems are: two-speed valve opening and closing is not flexible enough, the electromagnetic four-way valve failure rate is high, can not meet the requirements to run automated pump station; slow trip Check Valves Debugging is difficult to master, Bellows Seal Valves which often appears slow closing check valve closed strictly pump reverse phenomena, such as hydraulic conservation maintenance more trouble. L0 months of 2001, the Pump Station in Hebei Yi switch Zhuzhou Southern Valve Co., Ltd. Production of "multifunctional pump control valve", the ideal solution to these problems and improve the safety and reliability of water supply to achieve the automated pump station running. I. Introduction Multifunctional Pump Control Valve JD745X Series Multifunctional Pump Control Valve is a new automated the entire process of hydraulic valves, can be opened fully automated centrifugal pump to achieve the slow opening, stop the pump when the second stage of fast closing and slow closing to prevent thePlug Valves media pipeline of reflux, the valve can also substitute the operation of pump export pipeline valve, two-speed valves, slow closing valve check valve water hammer eliminator. Second, several features of the design 1. The formation of the main slide valve plate and valve with the valve plate opening size can change with the flow, which can be close to zero flow in the closed, to the best state to eliminate water hammer. 2. Control chamber diaphragm design used to avoid the piston-cylinder-type control cavity exists because of the Check Valvesswitch failure caused by resistance phenomenon. While reducing the pressure moves the diaphragm material first with a reinforced nylon fiber mesh reinforced neoprene, life of a 65 million action. 3. Than the swing check valve to reduce electricity consumption 31%, designed to reduce the weight of the main valve plate, a spacious seat with a streamlined design, drag coefficient of 3.8, significantly lower than the drag coefficient of 5.6 Swing-return valve. 4. Easy maintenance, using a wide valve Butterfly Valvescover flange connections without disassembly, all components of the valve can be removed. Third, run the data Pump Model 8Sh a 6A rated speed 2950r/min Motor 90KW head 83m flow 224m3 / h test case: 1. Control valves automatically open time of 30 to 40 seconds, automatically closing time of 10-15 seconds. 2. Kai at 2min after the pump when the valve reaches the maximum opening. 4, using the results Our Water Division in October 2000 using the normal operation of the product 5 months, total more than 2000Safety Valves hours without any failure, showed that the valve running very stable. 1. Meet the requirements of centrifugal pump start closing gates, to ensure the pump motor starts light load without electrical and hydraulic, can be realized directly on the pump to start and stop control, not only solve a sudden power outage caused by pipeline medium on which pumping system water hammer produced by the impact of media back, but also greatly reduce the labor intensity. 2. Eliminate water hammer effect of the ideal stopping off valve when the pump smooth no noise, vibration, valve closed tight, as this entirely on hydraulic control valve, so no need to hand management.

原文来源：http://www.1kongzhifa.com/

2010-08-31 07:16

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