古いPEパイプにわずかな水漏れがあり、効果的に修復する方法

2025-08-18

建物の給排水、都市工学、農業灌漑などの分野では、PEパイプは耐食性と優れた柔軟性のために広く使用されています。ただし、耐用年数が長くなると、古いPEパイプは、材料の経年劣化、外圧、またはわずかな損傷により、わずかな水漏れが発生する可能性があります。時間内に処理しないと、水資源の浪費を引き起こすだけでなく、より深刻なパイプの損傷につながる可能性があります。以下は、古いPEパイプのわずかな水漏れに対する効果的な修理方法です。

まず、修理作業を行う前に十分な準備をしてください。最初のタスクは、漏れ箇所の上流にあるバルブを閉じ、修理エリアのパイプ内の水を遮断し、パイプ内に残っている水を空にして、乾燥した作業環境を維持することです。次に、漏れ箇所周辺のパイプ表面を注意深く清掃し、ぼろきれまたはサンドペーパーを使用して油、錆、泥、緩んだ酸化物層を取り除き、パイプ表面をきれいで粗くします。これにより、補修材とパイプの結合力を効果的に高めることができます。同時に、その後の補修作業がより正確になるように、正確な漏れ位置をマークします。

古いPEパイプのわずかな漏れの場合、ゴム製のパッチテープ(またはゴム製のチューブカード)パッチは、操作が簡単で信頼性の高いオプションです。パイプの直径に一致するゴム製のパッチテープを選択し、通常は内側に粘着性があるか、固定装置で固定できます。パッチテープを漏れ箇所にしっかりと巻き、漏れ箇所とその周辺を少なくとも5 cm完全に覆ってください。金属クランプ付きのパッチテープを使用する場合は、レンチを使用してクランプのボルトを均等に締め、ゴムテープを作る必要があります。パイプの表面にしっかりとフィットし、効果的なシールを形成します。この方法は、圧力の低いパイプシステムに適しており、水漏れをすばやく止めることができます。

もう1つの一般的な方法は、自己接着型防水テープパッチです。テープは一般にブチルゴムまたはその他の高性能弾性材料で作られており、優れた接着性と防水性を備えています。きれいで乾燥したパイプの表面では、漏れのある側から始めて、テープを半ラップでしっかりと巻きます。巻くときは、テープとパイプおよびテープ層の間に気泡やしわがないことを確認するために、一定の引っ張り力を加える必要があります。巻き層の数は3〜5層以上をお勧めします。最後の層の端は、テープ自体の粘着性で固定するか、結束バンドを使用して結束して、パッチの堅牢性を確保できます。

パッチが完了したら、すぐに給水を再開しないでください。パッチがしっかりと取り付けられ、密閉されているかどうかを確認する必要があります。正しいことを確認したら、バルブをゆっくりと開き、パッチの漏れがないかどうかを確認します。通水後の初期段階では同時に、補修層が外れたり、パイプラインが再び損傷したりするのを防ぐために、補修後のパイプラインに激しい衝撃や重圧がかからないように注意する必要があります。

上記の方法は、主にパイプラインの軽微な局所的な水漏れに適用できることに注意してください。大面積の破損、長い亀裂、パイプライン壁の厚さの深刻な薄化など、パイプラインの水漏れが深刻な場合は、評価のために専門のパイプライン保守担当者に連絡することをお勧めします。パイプラインシステムの長期的な安全な運用を確保するために、必要に応じてパイプラインの交換を検討する必要があります。タイムリーで効果的な補修は、メンテナンスコストを節約するだけでなく、水漏れによって引き起こされる一連の潜在的な

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