应用于：低转速，小功率
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SSS工作原理(No.1B)
The initials SSS denote the 'Synchro-Self-Shifting' action of the clutch, whereby the clutch driving and driven teeth are phased and then automatically shifted axially into engagement when rotating at precisely the same speed. The clutch disengages as soon as the input speed slows down relative to the output speed.
在 SSS 离合器的输入轴上有一螺旋齿起到对 应螺栓作用，而安装在螺旋齿上的是一滑动组件， 起到类似螺母的作用。滑动部件的一端是离合器 啮合外齿，而在另一端是一组棘爪。
When the input shaft rotates, the sliding component rotates with it until a pawl tip contacts a ratchet tooth on the output clutch ring to prevent rotation of the sliding component relative to the output clutch ring, and align the driving and driven clutch teeth.
当输入轴旋转时，滑动部件随轴一起转动直到 棘卡爪尖端接触到离合器输出环的棘轮齿为止，这 就阻挡了滑动组件相对于离合器输出环的转动，并 使主、从动离合器的齿对准。
功能：（摘自SSS离合器使用手册） The purpose of the clutch：
The SSS Clutch is used in a single shaft cogeneration plant to connect and disconnect the steam turbine drive to one end of the generator driven at the other end by a gas turbine.
首字母SSS 指的是离合器的“Synchro-Self-Shifting”作用，当离合器的主 动、从动齿轮转速完全相等时两者相位同步、自动轴向移动而啮合。而一旦输入 转速低于输出转速时离合器脱开。
The basic operating principle of the SSS clutch can be compared to the
SSS离合器介绍
SSS clutch
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联合循环原理
烟囱
排气
蒸汽
水燃气轮机发电机来自汽轮机冷凝器2
优点： 共用发电机
缺点： 设置辅助锅炉 运行受牵制
单轴联合循环（汽轮机与发电机直接串联） 3
优点：
运行无牵制
SSS
缺点： 装自同步离合器
单轴联合循环（汽轮机与发电机之间装SSS离合器）4
SSS离合器：
离合器的输出端（发电机和燃气轮机）在全转速运行时，离合器的输入端（汽轮 机）能启动并达到全速，离合器自动啮合与发电机相连。汽轮机也能独立于燃气 轮机单独停机，停机时离合器自动脱开而与发电机断开。
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简言之，SSS离合器是一种单向传递扭矩的装置 单向传递扭矩装置应用实例：棘轮机构
仅当主动轮（内则） 作顺时针转动且转 速大于被动轮（外 侧）时，被动轮才 被驱动而传递扭矩。
the bolt.
SSS 离合器的基本工作原理可比拟为螺母拧在螺栓上。如果螺栓转动时螺母
是自由的，则螺母将随螺栓一同转动，如果螺母受限制而螺栓继续转动，则螺母
将沿螺栓作直线运动。
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SSS工作原理(No.1B)
In an SSS clutch the input shaft has helical splines which correspond to the thread of the bolt. Mounted on the helical splines is a sliding component which simulates the nut. The sliding component has external clutch teeth at one end, and a set of pawls at the other
SSS离合器安装在单轴共用发电机的电厂设备上，以联接或断开汽轮机与发电机， 发电机的另一端与燃气轮机相联连。
With the output side of the clutch (the generator and gas turbine) rotating at full speed, the input side of the clutch (the steam turbine) can be started and run up to full speed to automatically engage the clutch and connect the drive. The steam turbine can be shut down independently of the gas turbine and the clutch will automatically disengage to disconnect the drive.
action of a nut screwed on to a bolt. If the bolt rotates with the nut
free, the nut will rotate with the bolt. If the nut is prevented from rotating
while the bolt continues to turn, the nut will move in a straight line along