ʻO ka pahu hoʻomaha palekana, ʻike ʻia hoʻi ʻo ka valve overflow safety, he mea hoʻoluhi hoʻoluhi ʻakomi i hoʻokele ʻia e ka puʻe waena. Hiki ke hoʻohana ʻia e like me ka valve palekana a me ka valve hoʻomaha ma muli o ka noi.

I ka lawe ʻana iā Iapana ma ke ʻano he laʻana, ʻaʻole liʻiliʻi ka wehewehe ʻana o nā valve palekana a me nā pahu hoʻomaha. ʻO ka mea maʻamau, ua kapa ʻia nā mea palekana i hoʻohana ʻia no nā kīʻaha nui e mālama ai i ka ikehu e like me nā boilers he valves palekana, a ʻo nā mea i kau ʻia ma luna o nā pipeline a i ʻole nā ​​​​mea hana ʻē aʻe i kapa ʻia nā valve relief. Eia nō naʻe, e like me nā ʻōlelo o ka "Technical Standards for Thermal Power Generation" o ka Ministry of International Trade and Industry o Iapana, ʻo nā ʻāpana koʻikoʻi o ka hōʻoia palekana palekana e kuhikuhi i ka hoʻohana ʻana i nā valve palekana, e like me nā boilers, superheaters, reheaters, etc. I nā kūlana kahi e hoʻopili ʻia ai ka ʻaoʻao haʻahaʻa o ka pahu hoʻohaʻahaʻa hoʻohaʻahaʻa i ka paila a me ka turbine, pono e hoʻokomo ʻia kahi pahu hoʻomaha a i ʻole ka pahu palekana. Ma kēia ala, ʻoi aku ka hilinaʻi o ka valve palekana ma mua o ka valve hoʻomaha.

Eia kekahi, mai nā lula hoʻokele kinoea kiʻekiʻe o ka Ministry of Labor o Iapana, nā lula o ka Ministry of Transport a me nā hui moku ma nā pae āpau, ka ʻike a me nā hoʻoponopono o ka leo hoʻokuʻu palekana, kāhea mākou i ka valve e hōʻoiaʻiʻo i ka hoʻokuʻu ʻana. leo he pahu hopu palekana, a ʻo ka pahu i hōʻoiaʻiʻo ʻole i ka nui o ka hoʻokuʻu ʻana he pahu hoʻomaha. Ma Kina, inā he hāmama piha a i ʻole micro-open, ua kapa ʻia ʻo ia he valve palekana.

1. Nānā nui

ʻO nā valve palekana he mau mea palekana koʻikoʻi no nā boiler, nā ipu kaomi a me nā mea hana ʻē aʻe. ʻO ka hilinaʻi o kā lākou hana a me ka maikaʻi o kā lākou hana e pili pono ana i ka palekana o nā mea hana a me nā limahana, a pili pono i ka mālama ʻana i ka ikehu a me ka mālama ʻana i ke kaiapuni. Eia naʻe, koho mau kekahi mau mea hoʻohana a me nā keʻena hoʻolālā i ke kumu hoʻohālike i ke koho ʻana. No kēia kumu, ke kālailai nei kēia ʻatikala i ke koho ʻana i nā valve palekana.

2. Wehewehe

ʻO nā kiwi palekana i kapa ʻia he mau pahu hoʻomaha. Mai nā lula hoʻokele, pono e ʻae ʻia nā valves i hoʻokomo pono ʻia ma luna o nā paila mahu a i ʻole kekahi ʻano o nā moku kaomi e ʻae ʻia e ka ʻoihana kiaʻi ʻenehana. Ma ke ʻano haiki, ua kapa ʻia lākou he mau pahu palekana, a ʻo nā mea ʻē aʻe i kapa ʻia ʻo nā pahu hoʻomaha. Ua like loa nā kiwi palekana a me nā pahu hoʻomaha i ke ʻano a me ka hana. Hoʻokuʻu maʻalahi lāua ʻelua i ke kikowaena kūloko i ka wā i ʻoi aku ka nui o ke kaomi wehe e hōʻoia i ka palekana o nā mea hana. Ma muli o kēia ʻano like koʻikoʻi, huikau pinepine ka poʻe i nā mea ʻelua i ka wā e hoʻohana ai iā lākou. Eia kekahi, ʻōlelo kekahi mau mea hana e hiki ke koho ʻia kēlā me kēia ʻano i nā lula. No laila, ʻike pinepine ʻia nā ʻokoʻa ma waena o nā mea ʻelua. ʻO ka hopena, ulu mai nā pilikia he nui. Inā makemake mākou e hāʻawi i kahi wehewehe maopopo o nā mea ʻelua, hiki iā mākou ke hoʻomaopopo iā lākou e like me ka wehewehe ʻana ma ka hapa mua o ka ASME Boiler and Pressure Vessel Code:

(1)Puka palekana, he mea ho'oluhi 'akomi i ho'oku'u 'ia e ke kaomi static o ka mea waena ma mua o ka valve. Hōʻikeʻia ia e ka hana wehe piha me ka wehe koke. Hoʻohana ʻia ia i nā noi kinoea a i ʻole ka mahu.

(2)Kiwi hoʻomaha, i ʻike ʻia hoʻi ʻo overflow valve, he mea hoʻoluhi kaomi ʻakomi i hoʻokele ʻia e ke kaomi static o ka waena ma mua o ka valve. Wehe ia e like me ka piʻi ʻana o ke kaomi ma mua o ka ikaika wehe. Hoʻohana nui ʻia i nā noi wai.