進入冬季以后，氣溫迅速下降，閥門經常會出現凍結的情況。此時如果不加以處理，管道就很容易出現故障。如果是在一些高危工況，還可能發生事故。因此，閥門的防凍處理是非常重要的。
In winter, the temperature drops rapidly, and the valve often freezes. At this time, if it is not handled, the pipeline will be prone to failure. Accidents may also occur under some high-risk conditions. Therefore, antifreeze treatment of valves is very important.
在氣溫下降之前，就要對閥門裝置進行一次保溫工作，做好“過冬準備”。
Before the temperature drops, the valve device shall be insulated to make "winter preparation".
準備好所需工具:保溫棉、鐵絲、老虎鉗、美工刀，在煤氣區域還要攜帶更好的煤氣報警器。
Prepare the necessary tools: insulation cotton, iron wire, vice, art knife, and carry a better gas alarm in the gas area.
根據閥門的大小，用美工刀裁剪合適的保溫棉。再用老虎鉗剪好需要捆綁的鐵絲。包保溫棉時，將保溫棉撕開一點，使之繞過閥門手柄，更好的包裹閥體。包好保溫棉后，用鐵絲將它固定好。
According to the size of the valve, use a utility knife to cut appropriate insulation cotton. Then use the vice to cut the wire to be bound. When wrapping the insulation cotton, tear the insulation cotton a little to make it bypass the valve handle and better wrap the valve body. After wrapping the insulation cotton, fix it with iron wire.
在使用的過程中如果發現有凍結現象而無法正常運作時，切忌用扳手或其他重物敲擊閥門。正確的做法是將閥門關閉，用蒸汽或熱水將閥門解凍之后再開啟閥門。
In the process of use, if it is found that there is freezing phenomenon and it cannot operate normally, it is prohibited to knock the valve with a wrench or other heavy objects. The correct way is to close the valve, defrost the valve with steam or hot water, and then open the valve.

長期不使用閥門，應該*排除管道內的介質，防止管道和閥門凍結。保障安全生產，是每個企業應盡的義務與責任。閥門防凍這件事情，可大可小，我們切不可因為一時的大意疏忽，造成不可挽回的局面。
If the valve is not used for a long time, the medium in the pipeline should be removed to prevent the pipeline and valve from freezing. It is the duty and responsibility of every enterprise to ensure safe production. The valve antifreeze can be either big or small. We must not create an irreparable situation due to temporary carelessness.
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