Paip bekalan air PVC Skim pembinaan bekalan air kampung dan bandar: ujian tekanan dan anti-beku saluran paip.

2025-08-18


Dalam projek bekalan air kampung, paip bekalan air PVC digunakan secara meluas kerana rintangan kakisan, kos rendah, pemasangan yang mudah dan sebagainya. Walau bagaimanapun, disebabkan oleh faktor seperti keadaan geologi yang kompleks, suhu rendah pada musim sejuk, adalah perlu untuk memberi tumpuan kepada ujian kawalan tekanan dan anti-beku saluran paip untuk memastikan operasi sistem bekalan air yang stabil dan jangka panjang. Arahan berikut dibuat dari tiga aspek: titik teknikal, langkah pelaksanaan dan kawalan kualiti.

1. Spesifikasi teknikal untuk ujian tekanan

Selepas pemasangan paip, pemeriksaan penampilan diperlukan untuk memastikan antara muka tidak rosak dan pendakap kukuh. Air bersih digunakan untuk ujian, suhu air tidak lebih rendah daripada 5 ° C, dan udara dalam saluran paip perlu dinyahcas sepenuhnya melalui injap ekzos. Panjang bahagian ujian tidak boleh melebihi 1km, dan bahagian dengan perbezaan ketinggian yang lebih besar perlu diuji. Operasi penggalak berperingkat

- Fasa pra-percubaan: perlahan-lahan dinaikkan kepada 1.5 kali tekanan kerja (dan tidak kurang daripada 0.6MPa), selepas menekan selama 30 minit, semak sama ada antara muka bocor;

- Fasa ujian utama: teruskan meningkatkan tekanan kepada tekanan ujian (1.5 kali tekanan kerja), penurunan tekanan tidak boleh melebihi 0.05MPa selepas 1 jam, kemudian turun ke tekanan kerja untuk pemeriksaan penampilan untuk memastikan tiada kebocoran.

3. Jika titik kebocoran didapati dalam rawatan keadaan khas, nyahmampat air dan saliran serta-merta selepas dibaiki, dan diuji semula. Apabila ujian musim sejuk, langkah-langkah pengesanan haba saluran paip perlu diambil untuk mengelakkan air beku daripada membeku dan retak. 11727984001, skema pembinaan saluran paip kalis beku 11727798411. Kedalaman kawalan diletakkan di atas kawasan sejuk dan ketebalan saluran paip bumi melebihi 179843737400M. Tentukan data lapisan permafrost melalui tinjauan geologi. Sebagai contoh, kedalaman pengebumian perlu mencapai 1.8m di Dataran Timur Laut, dan tidak kurang daripada 1.2m di China Utara.

2. Pemilihan bahan penebat haba

- Paip terbuka luar menggunakan paip jaket polietilena berketumpatan tinggi (PEF) untuk penebat haba, ketebalan 50mm, pengedap dengan pita kalis air pada antara muka;

- Tampal penebat poliuretana tebal 50mm pada dinding dalam telaga injap, dan saliran kusyen batu kerikil dipasang di bahagian bawah telaga.

3. Reka bentuk antibeku saliran

menetapkan injap longkang pada titik terendah saluran paip, dan boleh mengeluarkan air dari saluran paip apabila ia dinyahaktifkan atau dibaiki pada musim sejuk. Untuk telaga air, penutup perigi dua lapisan + papan busa polistirena digunakan untuk memasang peranti penebat haba dalaman. Kuasa pemanas elektrik (2020W / 179811798117981179811,272711798117981179811,40011,2711,001). Penerimaan bahan

Paip PVC yang memasuki tapak perlu menyediakan sijil kelayakan kilang untuk sisihan ketebalan dinding (10%), ujian hentaman tukul jatuh (1kg berat 1m tanpa keretakan hentaman tinggi pada 0 ° C), dsb.

2. Rekod pembinaan

merekodkan data secara terperinci seperti lengkung ujian tekanan, ketinggian koordinat saluran paip, ketebalan lapisan penebat haba untuk membentuk fail penerimaan kejuruteraan yang tersembunyi.

3. Jaminan kecemasan

dilengkapi dengan peralatan pembaikan kecemasan (seperti pengimpal cair panas, pengapit palam kebocoran), sistem pemeriksaan musim sejuk diwujudkan, pengukuran suhu harian untuk saluran paip yang terdedah, dan langkah pemanasan sementara dimulakan apabila suhu persekitaran lebih rendah daripada -10 ° C.

Melalui pelaksanaan skim ujian tekanan saintifik dan perlindungan beku, sistem paip PVC dapat mengurangkan risiko operasi saluran paip dengan berkesan. Amalan kejuruteraan menunjukkan bahawa selepas menerima pakai teknologi di atas, kadar kegagalan musim sejuk saluran paip boleh dikurangkan lebih daripada 80%, dan kadar kebocoran boleh dikawal dalam 12%, meningkatkan keupayaan sokongan bekalan air kampung dan bandar dengan ketara. Dalam pembinaan, parameter perlu diselaraskan secara dinamik mengikut iklim tempatan dan keadaan geologi untuk memastikan keseimbangan ekonomi dan kebolehpercayaan skim.

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