热氨融霜操作--qsf999的安全生产小屋

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热氨融霜操作 | 2011-5-6 9:32:00

热氨融霜操作

融霜时，最好用单级压缩机排出的气体，它温度高，可缩短融霜时间。冬季融霜，为提高压缩机的排气温度，可适当减少冷凝器的台数或减少冷却水。但严禁停止全部冷凝器，以免发生事故。

融霜操作最好选择在出库后、库内无货或货物很少时进行。

将排液器调整到工作状态，没有排液器时将液体排入低压循环贮液桶，若利用低压循环贮液桶，必须调节供液量，使贮液器内液面不高于30%，以便接收融霜排液。

其操作步骤如下：

1)首先关闭调节站的供液节流阀，延时关闭回气电磁阀，停止蒸发器工作。

2)打开液体调节站上的排液阀和排液器上的进液阀，使氨液能流入排液器中。

3)缓慢打开热氨融霜阀，增加蒸发器内的压力，但不应超过0.6MPa。然后用间歇关、开调节站上排液阀的办法进行排液。排液时，排液器的贮氨量不超过70%，如达到70%，应先排液后再进行融霜。

4)当蒸发器排管外霜层全部融化脱落后，再开一次排液阀，排尽管内凝液和积油, 然后关闭热氨阀，排液阀停止融霜。再缓慢开启回气阀，降低排管内的压力，当降至系统回气压力时，开启供液阀，恢复制冷工作。

By:qsf999 | 阅读全文 | 回复(11) | 引用通告 | 编辑

Re:在漫画中识别身边的违章 | 2017-3-2 21:00:14

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By:edtvz(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章 | 2017-2-22 20:40:11

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Re:在漫画中识别身边的违章 | 2016-10-22 23:33:22

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Re:在漫画中识别身边的违章 | 2016-10-20 9:27:27

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By:mqvxb(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

原创 | 2016-9-30 16:10:32

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原创 | 2016-9-28 21:29:09

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原创 | 2016-9-6 21:52:34

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