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<h1 class="h1">柴油发电机冷却装置补液箱有什么功用？</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: 2024-07-27　　访问量:2259</div>
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<p>冷却系统中的空气、蒸气和水一起循环，使冷却能力下降，水泵的泵水量减小，并造成冷却系统内的压力不稳定和防冻液的不断消耗。</p><p>很多柴油发电机的冷却系统（如道依茨BFM1013柴油发电机冷却机构）采用的是永久式封闭冷却机构，这是因为这些柴油发电机是强化机型，体积小、容量大。因此，普通闭式冷却机构已无法满足冷却需要，因为水气不能分离，会造成：1、冷却系统中发生气阻，冷却效果和循环强度减少，无法满足冷却需要；2、冷却机构内的氧化腐蚀和机械剥蚀（穴蚀）日渐引起人们的重视；3、广泛操作防冻液，冷却水的消耗和浓缩太严重。为此，永久性的水冷却封闭装置就应运而生，且操作日渐广泛。柴油发电机补液箱的用途是：1、把冷却系统变成了一个永久性的封闭装置，避免了空气不断进入，减小了冷却机构的内部的氧化腐蚀。2、使冷却装置中的水气分离，使压力处于稳定状态，从而增大了水泵的泵水量和减少了水泵及水套内部的气穴腐蚀（穴蚀）。3、避免了防锈水的消耗，保持冷却装置的液位不变。</p><p>整体式补液箱如图所示。在闭式冷却装置中，蒸气混在水中不能分离，散热器盖上的阀门虽然能调节冷却机构内的压力，但在调整过程中需要放掉一部分蒸气（水），又放进一部分空气。这时，冷却系统中的空气、蒸气和水一起循环，使冷却能力下降，水泵的泵水量降低，并造成冷却机构内的压力不稳定和防冻液的不断消耗。在水套和散热器的上部，容易积存空气和蒸气的地方用水管与补液箱连接，使空气和蒸气不再直接排出，而是被引导到补液箱内与水分离。此时，蒸气冷凝为水后又通过进水管进入水泵的进水口，使水泵的进水口处保持较高的水压，增大泵水量。而积存在补注箱内的空气，得到了冷却，不再受热膨胀。故而，补液箱成为冷却装置内压力上升的缓冲器和膨胀空间，使机构压力保持稳定。</p><p>柴油发电机气穴腐蚀是由于气穴（气泡）的出现而引起的。气穴产生较严重的地方是离心水泵的进水口处（冷却机构压力较低的地方）。这些气泡使水泵的泵水量下降，并在金属表面附近破裂时放出热量和能量，同时对金属进行化学腐蚀和机械剥蚀。久而久之，使金属表面发生麻点和穴孔，这种现象被称为穴蚀。</p><p>为预防气穴和气穴腐蚀的产生，多采用下列举措：1、水泵进水口处保持过高的压力，即利用补液箱的补充水管进水；2、进水口处通过面积尽可能大一些，使进水流速不要过高并保持一定压力；3、水泵的进水口和出水口之间加平衡孔连通，使叶轮进水处的汽化压力过高，预防气泡的发生。</p></div><a href="http://www.gdkmsfdj.com/" target="_blank">http://www.gdkmsfdj.com</a>
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