Services and electrical
Cooling water system (P&ID)
A cooling water P&ID where pumps, heat exchangers, valves and instruments are joined by pipes distinguished by line type
This drawing comes from one YAML file. No shape was moved by hand.
Notes in the source (in Japanese)
P&ID は、配管と計器を 1 枚に書く図(Piping and Instrumentation Diagram)。フローシートが「何をするか」なら、P&ID は「何が付いているか」。
3"-CWS-101 のように、口径・流体の記号・通し番号を続けて書く(CWS は冷却水の往き、CWR は還り)。番号が無いと、現場で「この管」と指させない。
異物を羽根車へ入れないために置くので、ポンプの手前に付ける。吸込管は吐出管より細くしない(吸込側の抵抗はキャビテーションに直結する)。
製造ラインを回る二次側(冷却水槽 → ポンプ → 熱交換器 → 機械 → 槽へ還る)と、その熱を冷却塔へ捨てる一次側。熱交換器が 2 つのループを分けている。
片方を止めて整備できることが、動かし続ける条件になる。2 台とも同じ所から吸って同じ所へ出すのが、図で確かめること。
Source (YAML)
examples/gallery/18-配管の系統.zumen.yaml
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