译文：
1、技术原理 重锤式蝶阀由蝶阀本体、液压联动旁通阀、重锤、释放装置、手动油泵(或电动油泵)、齿条传动油缸及电子控制等部分组成。由油泵的压力油输入齿条传动油缸，经活塞上齿条推动蝶板主轴上的齿轮旋转来开启蝶板，并将同轴上的重锤举至高点。重锤上的棘爪通过释放装置上的锁锭轴锁锭；锁锭轴的固定，由电磁铁和支托装置来控制。当事故发生时，由于电子控制部分的动作，电磁铁断电，锁锭轴失去控制，在重锤的自重作用下脱扣绕轴旋转，使蝶阀自动关闭。 该蝶阀的油压系统，利用二段节流来控制蝶阀的关闭速度，开始时关闭速度较快，以减少飞车时间的持续和速率上升；后阶段关闭缓慢以控制水压上升率。 2、技术特点及主要技术参数 2.1技术特点 具有整机装配的手电两用油压系统，使整机结构紧凑，操作方便。 在没有外来电源的情况下，能利用重力蓄能自行关机。当机组过速、轴承过热及发电机失磁时均能自动关闭，从而对机组进行了自动保护。具有快慢两段关闭特性。采用电磁铁控制的锁锭机构，既安全可靠、操作力又小。 2.2主要技术参数、指标 以D741-10型重锤式蝶阀为例，主要技术数据有：压力，1MPa；直径，φ400、φ500、φ600、φ800、φ1000、φ1200；{zg}使用水头，100m；{zg}升压水头，145m；开启时间，手动5min左右、电动1min左右；关闭时间，快关段5～10s；慢关段10～50s；过速保护范围，1.8倍额定转速(可调)。 3、具体应用地点及效果 浙江省临海市柴坦水电站采用浙江平阳县水电自动设备厂生产的两台D741X-10重锤式蝶阀。电站型式为混合式，有压隧洞1100m，洞径2.6m，压力管长50m，管径1.2m，设计水头45.5m，{zg}水头47m，设计流量1.8m3/s，水轮机HL220-WJ-50A，发电机SFW-630-6/990(电抗分流励磁)，额定电压400V，额定容量630kW，额定转速1000r/min。1991年1月2日并入大电网发电至1993年3月，两台机合计运行7780h。重锤阀运行情况良好，评价如下：(1)设备动作正确，实现了安全生产，两台蝶阀开启203次、关闭203次，动作正确率{bfb}；(2)电动开启平均时间为55s，甩负荷时快关时间设定为5s，先快利于减少转速上升率，上升率控制在40%之内，慢关时间设定为20s，后慢在于减少水压上升率，上升率控制在21%之内；(3)在事故停机过程中机组过速，当超过1.4倍额定转速时，由测速装置发令，重锤自动脱扣关闭进水阀，避免事故扩大，增加了运行安全感。 4、结语 首先，提高了设备运行的可靠性，保证了安全停机。其次，减轻了运行工人的劳动强度，减少了维护工作量。两台机组减少值班人员4名，每年约节支8万元。 另外，该阀在无人(少人)值班并网电站或孤立电站中当失去厂用电时能自动脱扣重锤关闭，而无需备用直流操作电源。 在一些电站设计中，若在已定的机组GD2和水工建筑物布置的条件下，无法找到合适的导叶关闭时间以保证机组速率上升值和水压力上升值均不超过标准规定的允许值，此时可采取重锤式蝶阀快慢二段关闭，先快以利减少转速升高，后慢又能减少水压力升高。此法比设置人工电阻可靠，比设置调压井经济。

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原文：
1, technical principles Butterfly valve body by a heavy hammer, hydraulic linkage bypass valve, hammer, release devices, manual oil pump (or electric pump), fuel tank rack drive and electronic control components. Pressure from the oil pump drive input rack cylinder by the piston rack gear to promote the butterfly Banzhu axis rotation to open the disc and move the heavy hammer on the highest point of coaxial. Heavy hammer on the pallet through the release of the lock device Spindle lock spindle; lock spindle axis fixed by the electromagnet and support care devices to control. When an accident occurs, as part of the movement of electronic control, solenoid power, Spindle lock out of control, under the dead weight of the hammer release an axis, so that valve automatically closes. The butterfly valve hydraulic system, using Erduan throttle to control the butterfly valve closing speed, closing speed at the beginning, continued to reduce the time and rate of runaway rise; after the closing stage of the slow rate of increase in order to control water pressure. 2, technical characteristics and main technical parameters 2.1 Technical characteristics Dual flashlight assembly with machine hydraulic system to whole structure is compact, easy to operate. In the case of no external power, self storage can be shut down by gravity. When the machine too fast, bearing overheating and loss of field generator can automatically turn off when the order of the units were automatically protected. Two close features with speed. Using solenoid-controlled locks spindle organization, not only safe, reliable, power and small. 2.2 The main technical parameters, indicators To D741-10 Heavy Hammer valve, for example, the main technical data are: pressure, 1MPa; diameter, φ400, φ500, φ600, φ800, φ1000, φ1200; maximum use of head, 100m; the highest step-up head, 145m; open time, manual 5min or so, so electric 1min; closing time, fast-off section 5 ~ 10s; slow the relevant section of 10 ~ 50s; over-speed protection, 1.8 times the rated speed (adjustable). 3, the location and effect of the specific application Zhejiang Linhai City, Zhejiang Pingyang Chai Tan Hydropower Station with automatic equipment factory produced two D741X-10 hammer-type valve. Power for the hybrid type, pressure tunnel 1100m, Diameter 2.6m, pressure pipe length 50m, diameter 1.2m, design head of 45.5m, maximum head 47m, design flow 1.8m3 / s, turbine HL220-WJ-50A, power generation Machine SFW-630-6/990 (reactance shunt excitation), rated voltage 400V, rated capacity of 630kW, rated speed 1000r/min. January 2, 1991 into a large grid generation to March 1993, two machine together to run 7780h. Valve hammer performed well, rating as follows: (1) action right equipment to achieve the safe production, two butterfly valves 203 open and close 203 times, {bfb} accuracy rate movements; (2) The average time to open electric 55s, time of load rejection set off fast 5s, the first rapid rise in rates helps to reduce speed, increase the rate of 40% within the relevant time is set to slow 20s, is to reduce the water pressure after the slow rate of increase, rising rate control in 21 % within; (3) units in the accident shut down the process too fast, when more than 1.4 times the rated speed, the order issued by a speed measurement equipment, automatic trip hammer closed inlet valve, to avoid spreading of the accident, an increase of operating security. 4 Conclusion First of all, to improve the reliability of the equipment to ensure safe shutdown. Second, to reduce labor intensity running, reduce the maintenance. Two units to reduce the duty officer 4, annual savings of about 80,000 yuan. In addition, the valve in the absence of (small) grid power plant or isolated duty station in time when the loss of auxiliary power trip hammer automatically shut down operations without backup DC power supply. In some power plant design, if the unit is scheduled to GD2 and hydraulic structure layout of the conditions, can not find a suitable guide vane closing time to ensure the unit rate on the rise and the water pressure on the appreciation of no more than the allowable value of the standard , then you can take speed Erduan hammer butterfly closed quickly at first to facilitate the reduction of speed increase and then slowly and reducing the water pressure increases. This method is reliable than setting artificial resistance, surge tank the economy than the setting.