本文针对目前国内外手动阀门工作时,操作力较难控制的情况,设计了新型扭矩手轮。实践证明,这种新型扭矩手轮使用方便,成本低廉,可提高密封可靠性,延长阀门使用寿命,对中低压明杆式大口径阀门尤其适用。扭矩手轮如图1所示,关闭扭矩由手轮4通过钢球5作用到阀杆螺母3V形槽斜面上。当扭矩超过规定值时,V形槽斜面克服弹簧6压力将钢球推入孔内,使手轮5阀杆螺母打滑,防止产生过大的密封应力,减 In this paper, the current domestic and international manual valve work, the operating force is more difficult to control the situation, designed a new type of torque hand wheel. Practice has proved that this new type of torque handwheel easy to use, low cost, can improve the sealing reliability, extend the service life of the valve, especially for medium and low pressure rod diameter large diameter valve. Torque handwheel shown in Figure 1, the closing torque from the handwheel 4 through the ball 5 to the stem nut 3V slot slope. When the torque exceeds the specified value, the V-groove slope overcomes the pressure of the spring 6 to push the steel ball into the hole, so that the hand wheel 5 stem nut slipping, to prevent excessive sealing stress, reducing