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<h1 class="h1">柴油发电组活塞环的组成及作用讲解</span></h1>
<div class="text">发布来源：康柴（深圳）电力技术有限公司　　发布日期: 2025-08-16　　访问量:283</div>
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<p>活塞环是柴油发电机组活塞连杆总成的一个重要构成部分，活塞连杆总成是用来将燃烧过程中获得的动力传递给曲轴，当该轴承置于机体内时，发电机作业程序中往复运动被传递给曲轴转换成旋转运动。今天深圳发电机出租公司来熟悉一下柴油发电组活塞环的构成及功用。</p><p>活塞环通常采用合金铸铁制造，其硬度一般比汽缸壁要大。有些发电机为提升活塞环的耐磨性，将第一道环的作业表面进行多孔性镀铬，活塞环的各部名称如下图所示。活塞环的直径是指在气缸中处于压缩状态时的外径(在自动状态时，环的外径大于汽缸直径)。活塞环上下两平面称为端面，端面间的距离称为环高，环高方向与环槽间留有间隙叫侧隙：环的外表面称为作业面，环的内表面称为背面，内表面方向与环槽所留间隙叫背隙；环缺口叫开口(也叫开口间隙)。在保证环受热后不致胀死的情形下。开口间隙应尽量小。</p><p>活塞环的开口形状，分直形、斜形和阶梯形几种，如下图所示。活塞环的开口间隙大小将影响密封的效果，而密封效果和环的开口形状有一定关系。在开口向隙相同的情形下，通常认为斜形和阶梯形密封效果好些<a href="http://www.gdkmsfdj.com" target="_blank">发电机故障图标</a>。但从试验中发现，无论在空载或全负荷时，漏气量与开口形状关系也不大，加之直开口形状环加工容易，故而现在大多数内燃机采用直开口活塞环。</p><p>活塞环是具有弹性的金属开口圆环，按其功用不同可分为气环和油环两种。气环装在活塞头部的气环槽内，预防高压气体从汽缸进人油底壳，起密封功用。活塞顶所吸收的热量向外传递，大部分要通过气环传给气缸壁<a href="http://www.gdkmsfdj.com" target="_blank">柴油机常见故障诊断及排除</a>，再由水套中的水箱宝带走，故气环还起传热功用。油环装在气环下边的油环槽内，使机油分布于汽缸壁<a href="http://www.gdkmsfdj.com" target="_blank">柴油发电机厂家价格</a>，以减少活塞和汽缸壁的磨耗，同时将汽缸壁上多余的机油刮下流回机油盘，避免机油串人燃烧室。</p></div><a href="http://www.gdkmsfdj.com/" target="_blank">http://www.gdkmsfdj.com</a>
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