1 Nā mea nui o ka koho valve

1.1 E wehewehe i ke kumu o ka valve i loko o ka lako a i ʻole ka mea hana

E hoʻoholo i nā kūlana hana o ka valve: ke ʻano o ke ʻano kūpono, ke kaomi hana, ka mahana hana a me ke ʻano hoʻokele hana, etc.;

1.2 E koho pololei i ke ʻano o ka valve

ʻO ke koho kūpono o ke ʻano valve e pili ana i ka ʻike piha o ka mea hoʻolālā i ke kaʻina hana holoʻokoʻa a me nā kūlana hana. Ke koho ʻana i ke ʻano valve, pono ka mea hoʻolālā e haku mua i nā ʻano hana a me ka hana o kēlā me kēia valve;

1.3 E hoʻoholo i ka pili hope o ka valve

Ma waena o ka pilina pili, ka pili flange a me ka hoʻopili hope ʻana, hoʻohana pinepine ʻia nā mea mua ʻelua. ʻO nā kiwi uila ka nui o nā valve me ke anawaena inoa o lalo o 50mm. Inā nui loa ke anawaena, paʻakikī loa ka hoʻokomo ʻana a me ka sila ʻana o ka pilina. ʻOi aku ka maʻalahi o ka hoʻokomo ʻana a me ka wehe ʻana i nā valves Flange-connected, akā ʻoi aku ke kaumaha a ʻoi aku ke kumukūʻai ma mua o nā valve i hoʻopaʻa ʻia, no laila kūpono lākou no nā pilina paipu o nā anawaena like ʻole a me nā kaomi. Ua kūpono nā pilina welding no nā kūlana ukana kaumaha a ʻoi aku ka hilinaʻi ma mua o nā pili flange. Eia nō naʻe, paʻakikī ka wehe ʻana a hoʻokomo hou i nā valve i hoʻopili ʻia e ka welding, no laila ua kaupalena ʻia kona hoʻohana ʻana i nā manawa e hiki ai ke hana maʻamau me ka hilinaʻi no ka manawa lōʻihi, a i ʻole nā ​​kūlana hoʻohana a paʻakikī a kiʻekiʻe ka mahana;

1.4 Ke koho ʻana i nā mea valve

Ma waho aʻe o ka noʻonoʻo ʻana i nā waiwai kino (ka wela, kaomi) a me nā waiwai kemika (corrosiveness) o ke ʻano hana, pono e hoʻomaʻemaʻe ʻia ka maʻemaʻe o ka medium (inā he mau ʻāpana paʻa) ke koho ʻana i nā mea o ka pūpū valve, nā ʻāpana o loko a ili hoʻopaʻa. Eia kekahi, pono e kuhikuhi ʻia nā lula pili o ka mokuʻāina a me ka ʻoihana mea hoʻohana. ʻO ke koho kūpono a me ke kūpono o nā mea valve hiki ke loaʻa i ke ola lawelawe ʻoi aku ka maikaʻi a me ka hana maikaʻi loa o ka valve. ʻO ke kauoha koho o nā mea kino kiwi: hoʻolei i ka hao-carbon steel-stainless steel, a ʻo ke kauoha koho o ka hoʻopaʻa ʻana i nā mea apo mea: rubber-copper-alloy steel-F4;

1.5 Nā mea ʻē aʻe

Eia kekahi, pono e hoʻoholo ʻia ka kahe kahe a me ke kiʻekiʻe o ke kaomi o ka wai e kahe ana i loko o ka valve, a pono e koho ʻia ka valve kūpono me ka hoʻohana ʻana i ka ʻike i loaʻa (e like me nā palapala huahana valve, nā huahana valve, etc.).

2 Hoʻolauna i nā ʻāpapa maʻamau

Nui nā ʻano valve, a paʻakikī nā ʻano. ʻO nā ʻano nuikiwi puka.kiwi lele, kiwikā hookui, kiwi poepoe, kiwi uila, kiwipa diaphragm, kiwi kiwi, kiwipa palekana, kiwi hoemi kaomi,nā pahele mahu a me nā pahu hopu pilikia,ma waena o ia mau mea i hoʻohana mau ʻia, ʻo ia nā ʻīpuka puka, nā kiwi hoʻokuʻu, nā kīwī throttle, nā kiwi hoʻoheheʻe, nā kiwi lele, nā kiwi pōpō, nā kiwi nānā, a me nā kiwi diaphragm.

2.1 Puka puka

ʻO ka valve puka he kiwi nona ka wehe a pani ʻana o ke kino (valve plate) e ke kumu valve a neʻe i luna a i lalo ma ka ʻili hoʻopaʻa o ka noho valve, hiki ke hoʻohui a ʻoki paha i ke ala o ka wai. Ke hoʻohālikelike ʻia me ka valve stop, ʻoi aku ka maikaʻi o ka hoʻopaʻa ʻana o ka ʻīpuka, ʻoi aku ka liʻiliʻi o ka wai, ka liʻiliʻi o ka hoʻoikaika ʻana i ka wehe ʻana a me ka pani ʻana, a loaʻa kekahi hana hoʻoponopono. ʻO ia kekahi o nā pahu pani i hoʻohana pinepine ʻia. ʻO nā hemahema ka nui nui, ʻoi aku ka paʻakikī o ka hoʻolālā ma mua o ka pahu pani, ka maʻalahi o ka ʻili o ka sila, a me ka mālama paʻakikī. ʻAʻole kūpono ia no ka throttling. E like me ke kūlana o ke kaula ma ka ʻōpala o ka ʻīpuka, hiki ke hoʻokaʻawale ʻia i ʻelua mau ʻano: ke ʻano o ke kumu ala a me ke ʻano kumu huna. Wahi a nā hiʻohiʻona o ka pā puka, hiki ke hoʻokaʻawale ʻia i ʻelua ʻano: ʻano wedge a me nā ʻano like.

2.2 Hoʻokuʻu i ka valve

ʻO ka pahu hoʻomaha kahi pahu pani i lalo, kahi e hoʻokele ʻia ai nā ʻāpana wehe a pani ʻia (valve disc) e ke kumu valve e neʻe i luna a i lalo ma ke koʻi o ka noho valve (sealing surface). Ke hoʻohālikelike ʻia me ka valve puka, loaʻa iā ia ka hana hoʻoponopono maikaʻi, maikaʻi ʻole ka hana sealing, hana maʻalahi, hana maʻalahi a mālama ʻia, kūpaʻa wai nui, a me ke kumu kūʻai haʻahaʻa. ʻO ia ka valve ʻokiʻoki maʻamau, hoʻohana maʻamau ʻia no nā pipeline liʻiliʻi a liʻiliʻi.

2.3 Puka kinipopo

ʻO ka wehe ʻana a me ka pani ʻana o nā ʻāpana o ka pōleʻa he mau pōʻai me ka pōʻai ma waena o nā lua, a ke hoʻololi nei ka pōʻai me ke kumu valve e ʻike ai i ka wehe a me ka pani ʻana o ka valve. He ʻano maʻalahi ka ʻōmole pōleʻa, hoʻololi wikiwiki, hana maʻalahi, liʻiliʻi liʻiliʻi, paona māmā, liʻiliʻi nā ʻāpana, liʻiliʻi liʻiliʻi wai liʻiliʻi, hoʻopaʻa maikaʻi, a mālama maʻalahi.

2.4 Puka puʻupuʻu

Koe wale no ka pahu valve, ua like ke ano o ka pahu throttle me ka valve pani. He ʻāpana throttling kona disc valve, a ʻokoʻa nā ʻano ʻano like ʻole. ʻAʻole pono ka nui o ke anawaena o ka noho valve, no ka mea, he liʻiliʻi kona kiʻekiʻe wehe a piʻi aʻe ka nui o ke kahe ʻana, a laila e hoʻokē ʻai ai i ka ʻino o ka disc valve. ʻO ka valve throttle he mau liʻiliʻi liʻiliʻi, ke kaumaha māmā, a me ka hana hoʻoponopono maikaʻi, akā ʻaʻole kiʻekiʻe ka pololei o ka hoʻoponopono.

2.5 Hoʻopili pahu

Hoʻohana ka valve plug i ke kino plug me ka puka ma ke ʻano he wehe a pani ʻana, a ʻo ke kino plug e hoʻololi me ke kumu valve e loaʻa ai ka wehe a me ka pani ʻana. He ʻano maʻalahi ko ka valve plug, wehe wikiwiki a pani ʻia, hana maʻalahi, kūpaʻa wai liʻiliʻi, liʻiliʻi nā ʻāpana, a me ke kaumaha māmā. Loaʻa nā kiwi hoʻopili i nā ʻano ʻano pololei, ʻekolu ala, a me nā ʻano ʻehā. Hoʻohana ʻia nā kiwi hoʻopili pololei e ʻoki i ka waena, a hoʻohana ʻia nā ʻāpana plug ʻekolu a me nā ala ʻehā no ka hoʻololi ʻana i ke ala o ke ala a i ʻole e hoʻohuli i ke ala.

2.6 Kiwipepepe

ʻO ka valve butterfly he pā pele e hoʻohuli 90 ° a puni kahi axis paʻa i loko o ke kino valve e hoʻopau i ka hana wehe a pani. He liʻiliʻi ka nui o ka valve butterfly, māmā ke kaumaha, maʻalahi ke ʻano, a he mau ʻāpana wale nō.

A hiki ke wehe koke ʻia a pani ʻia ma ka hoʻololi ʻana i ka 90 °, a maʻalahi ke hana. I ka wā e wehe ʻia ai ka valve butterfly, ʻo ka mānoanoa o ka pā peʻapeʻa ke kūʻē wale nō i ka wā e kahe ai ka mea waena ma ke kino valve. No laila, liʻiliʻi loa ka hāʻule kaomi i hana ʻia e ka valve, no laila he mau hiʻohiʻona kaohi kahe maikaʻi. Hoʻokaʻawale ʻia nā kīwaha Butterfly i ʻelua ʻano o ka sila: elastic soft seal a me metal hard sila. No nā kiwi elastic seal, hiki ke hoʻokomo ʻia ke apo hoʻopaʻa i loko o ke kino valve a i ʻole e hoʻopili ʻia i ka ʻaoʻao o ka pā papalele. He hana hoʻopaʻa maikaʻi a hiki ke hoʻohana ʻia no ka throttling, a me nā pipeline vacuum medium a me nā media corrosive. ʻOi aku ka lōʻihi o ke ola o nā pahu me nā sila metala ma mua o nā kiwi me nā sila elastic, akā paʻakikī ke hoʻokō i ka sila piha. Hoʻohana pinepine ʻia lākou i nā manawa e ʻokoʻa nui ai ke kahe a me ka hāʻule ʻana o ke kaomi a pono ka hana throttling maikaʻi. Hiki i nā sila metala ke hoʻololi i nā mahana hana kiʻekiʻe, aʻo nā sila elastic ka hemahema o ka palena ʻia e ka mahana.

2.7 Hōʻoia kiwikā

ʻO ka valve check he valve e hiki ke pale ʻakomi i ka hoʻihoʻi ʻana o ka wai. Wehe ʻia ka disc valve o ka valve check ma lalo o ka hana o ke kaomi wai, a kahe ka wai mai ka ʻaoʻao inlet a i ka ʻaoʻao puka. Ke emi iho ke kaomi ma ka ʻaoʻao inlet ma mua o ka ʻaoʻao puka, e pani koke ka pahu valve ma lalo o ka hana a nā mea e like me ka ʻokoʻa o ke kaomi wai a me kona ʻumekaumaha e pale i ka hoʻihoʻi ʻana o ka wai. E like me ke ʻano o ke ʻano, ua māhele ʻia i ka valve check valve a me ka swing check valve. ʻOi aku ka maikaʻi o ka hoʻopaʻa ʻia ʻana o ka valve check lift ma mua o ka swing check valve a ʻoi aku ka ikaika o ka wai. No ke awa hoʻoheheʻe o ka paipu hoʻoheheʻe ʻana, pono ke koho ʻia kahi pahu wāwae. ʻO kāna hana: e hoʻopiha i ka paipu inlet pump me ka wai ma mua o ka hoʻomaka ʻana i ka paila; e mālama i ka paipu komo a me ka paila i piha i ka wai ma hope o ka ho'ōki ʻana i ka pamu no ka hoʻomākaukau ʻana no ka hoʻomaka hou ʻana. Hoʻokomo wale ʻia ka ʻūhā wāwae ma ka paipu kūpaʻa ma ka puka pā, a kahe ka waena mai lalo a luna.

2.8 Puka Diaphragm

ʻO ka ʻāpana wehe a pani ʻana o ka valve diaphragm he diaphragm rubber, kahi i hoʻopaʻa ʻia ma waena o ke kino valve a me ka uhi valve.

Hoʻopaʻa ʻia ka ʻaoʻao kūwaho o ka diaphragm ma ke kumu valve, a ua hoʻopaʻa ʻia ke kino valve me ka lāʻau. No ka mea ʻaʻole i komo ka mea waena i ka lua o loko o ka uhi valve, ʻaʻole pono ka pahu valve i kahi pahu meaʻai. ʻO ka valve diaphragm he ʻano maʻalahi, hana hoʻopaʻa maikaʻi, mālama maʻalahi, a me ka haʻahaʻa haʻahaʻa o ka wai. Hoʻokaʻawale ʻia nā valve diaphragm i ke ʻano weir, ʻano pololei-ma, ʻano ʻākau ʻākau a me ke ʻano o kēia manawa.

3 Nā ʻōlelo kuhikuhi koho valve maʻamau

3.1 ʻO nā ʻōlelo aʻoaʻo koho ʻīpuka

ʻO ka maʻamau, pono e koho mua ʻia nā ʻīpuka puka. Ma waho aʻe o ka mahu, ka aila a me nā mea hoʻolaha ʻē aʻe, kūpono hoʻi nā kīwaha puka no ka media i loaʻa nā paʻa granular a me ka viscosity kiʻekiʻe, a kūpono hoʻi i nā kiwi no ka hoʻokuʻu ʻana a me nā ʻōnaehana haʻahaʻa haʻahaʻa. No ka media me nā ʻāpana paʻa, pono e loaʻa hoʻokahi a ʻelua mau puka hoʻomaʻemaʻe i ke kino o ka ʻīpuka. No ka media haʻahaʻa haʻahaʻa, pono e koho ʻia kahi kīwī puka kūikawā haʻahaʻa haʻahaʻa.

3.2 Hoʻopau i nā ʻōlelo kuhikuhi koho valve

ʻO ka valve stop he kūpono ia no nā pipeline me nā koi haʻahaʻa no ka pale ʻana i ka wai, ʻo ia hoʻi, ʻaʻole i manaʻo nui ʻia ka nalowale o ke kaomi, a me nā pipelines a i ʻole nā ​​​​mea hana me ka media kiʻekiʻe a me ke kiʻekiʻe. He kūpono ia no ka mahu a me nā paipu media ʻē aʻe me DN <200mm; hiki i nā kiwi liʻiliʻi ke hoʻohana i nā kīwī hoʻomaha, e like me nā kiwi kui, nā kiwi mea hana, nā kiwi hoʻoheheʻe ʻana, nā kiwi puʻu kaomi, etc.; ʻO nā valves stop he hoʻoponopono kahe a i ʻole ka hoʻoponopono kaomi, akā ʻaʻole kiʻekiʻe ka pololei o ka hoʻoponopono, a he liʻiliʻi ke anawaena pipeline, no laila e koho ʻia nā kiwi a i ʻole throttle valves; no ka mea 'awa'awa loa, pono ke koho 'ia i na pahu pani pani i ho'opa'a 'ia i ka bellows; akā, ʻaʻole pono e hoʻohana ʻia nā kiwi hoʻopaʻa no ka media me ka viscosity kiʻekiʻe a me ka media i loaʻa nā ʻāpana i maʻalahi ke hoʻoheheʻe ʻia, ʻaʻole hoʻi e hoʻohana ʻia ma ke ʻano he puka makani a me nā kiwi no nā ʻōnaehana haʻahaʻa haʻahaʻa.

3.3 Nā ʻōlelo aʻoaʻo koho pāpaʻi pōʻai

He kūpono nā kiwi pōleʻa no ka haʻahaʻa haʻahaʻa, kiʻekiʻe kiʻekiʻe, a kiʻekiʻe-viscosity media. Hiki ke hoʻohana ʻia ka hapa nui o nā kīwī pōleʻa i ka media me nā ʻāpana paʻa paʻa, a hiki ke hoʻohana ʻia no ka paona a me ka media granular e like me nā koi waiwai o ka sila; ʻAʻole kūpono nā ʻōmole pōleʻa piha no ka hoʻoponopono kahe ʻana, akā kūpono i nā manawa e koi ana i ka wehe wikiwiki a me ka pani ʻana, kahi kūpono no ka ʻoki ʻana i ka pilikia i nā ulia; 'Ōlelo pinepineʻia nā'ōmole pōleʻa no nā paipu me ka hoʻopaʻa paʻa paʻa, kaʻaʻahu, nā kahawai hoʻohaʻahaʻa, ka wehe wikiwikiʻana a me ka paniʻana, kaʻokiʻoki kiʻekiʻe (kaʻokoʻa puʻupuʻu nui), ka haʻahaʻa haʻahaʻa, ka hoʻoheheʻe gasification, ka liʻiliʻi hana torque, a me ka pale wai liʻiliʻi; kūpono nā ʻūhā pōleʻa no nā hale māmā, ʻoki ʻoki haʻahaʻa haʻahaʻa, a me nā media corrosive; ʻO nā kiwi pōleʻa ka mea kūpono loa no ka haʻahaʻa haʻahaʻa a me ke anuanu hohonu. No nā ʻōnaehana pipeline a me nā mea hoʻohana no ka media haʻahaʻa haʻahaʻa, pono e koho ʻia nā kiwi pōpō haʻahaʻa haʻahaʻa me nā uhi valve; i ka hoʻohana ʻana i nā kiwi pōpō lana, pono i ka mea noho kiwi ke halihali i ka ukana o ka pōleʻa a me ke ʻano hana. Pono ka ikaika nui o na kiwi pōpō anawaena nui i ka wā o ka hana ʻana, a pono e hoʻohana nā kiwi pōlele DN≥200mm i ka hoʻouna ʻana i nā mea ilo; kūpono nā ʻūpili pōlele paʻa no nā manawa me nā anawaena nui aʻe a me nā kaomi kiʻekiʻe; Eia kekahi, pono e loaʻa i nā ʻōleʻa pōlele no nā pipeline o nā mea hana ʻawaʻawa a me ka media flammable e loaʻa i nā hale pale ahi a anti-static.

3.4 Nā ʻōlelo aʻoaʻo koho no ka Throttle Valve

He kūpono nā pahu throttle no nā manawa me ka haʻahaʻa haʻahaʻa haʻahaʻa a me ke kaomi kiʻekiʻe, a kūpono i nā ʻāpana pono e hoʻoponopono i ke kahe a me ke kaomi. ʻAʻole kūpono lākou no ka media me ka viscosity kiʻekiʻe a loaʻa nā mea paʻa paʻa, a ʻaʻole kūpono ia no nā valve kaʻawale.

3.5 Nā ʻōlelo kuhikuhi no ka Plug Valve

He kūpono nā ʻōkuhi plug no nā manawa e pono ai ka wehe wikiwiki a me ka pani ʻana. ʻAʻole kūpono lākou no ka mahu a me ka media wela kiʻekiʻe. Hoʻohana ʻia lākou no ka media me ka haʻahaʻa haʻahaʻa a me ka viscosity kiʻekiʻe, a kūpono hoʻi no ka media me nā ʻāpana i hoʻokuʻu ʻia.

3.6 Nā ʻōlelo aʻoaʻo no ke koho ʻana no ka ʻūpā Butterfly

He kūpono nā ʻōpena Butterfly no nā manawa me nā anawaena nui (e like me DN﹥600mm) a me nā koi lōʻihi o ka hoʻolālā pōkole, a me nā manawa e koi ai i ka hoʻoponopono kahe a me ka wehe wikiwiki a me ka pani ʻana. Hoʻohana pinepine ʻia lākou no ka media e like me ka wai, ka aila a me ka ea i hoʻopaʻa ʻia me nā mahana ≤80 ℃ a me nā kaomi ≤1.0MPa; no ka mea, he nui ka pohō o ke kaomi ʻana o nā kiwi lele i hoʻohālikelike ʻia me nā ʻīpuka puka a me nā kiwi pōlele, kūpono nā kiwi lele no nā ʻōnaehana pipeline me nā koi lax pressure loss.

3.7 Nā ʻōlelo aʻoaʻo no ke koho ʻana i ka pahu hōʻoia

He mea maʻamau ka hoʻopaʻa ʻana i nā kiwikā no ka media maʻemaʻe, a ʻaʻole kūpono i ka media i loaʻa nā ʻāpana paʻa a me ka viscosity kiʻekiʻe. I ka DN≤40mm, pono e hoʻohana i ka pahu hoʻokiʻekiʻe kiʻekiʻe (ʻae wale ʻia e kau ʻia ma nā paipu ākea); i ka DN＝50～400mm, pono e hoohana i ka swing lifting check valve (hiki ke hookomo ia ma na paipu paepae a me ka paipu. i ka DN≥450mm, pono e hoʻohana i ka pahu pahu pahu; i ka DN＝100～400mm, hiki ke hoʻohana ʻia i ka pahu wafer check; hiki ke hana i ka swing check valve i ke kiʻekiʻe kiʻekiʻe o ka hana, hiki i ka PN ke hiki i 42MPa, a hiki ke hoʻopili ʻia i kēlā me kēia ʻano hana a me nā pae wela hana e like me nā mea like ʻole o ka pūpū a me nā sila. He wai, mahu, kinoea, corrosive medium, aila, lāʻau lapaʻau, a me nā mea ʻē aʻe. Aia ma waena o -196～800 ℃ ka waena.

3.8 Nā ʻōlelo aʻoaʻo e koho ai i ka valve diaphragm

He kūpono nā pahu diaphragm no ka aila, ka wai, ka media acidic a me ka media i loaʻa ka mea i hoʻokuʻu ʻia me ka mahana hana ma lalo o 200 ℃ a me ke kaomi ma lalo o 1.0MPa, akā ʻaʻole no nā mea hoʻoheheʻe organik a me nā mea hoʻomake ikaika. He kūpono nā ʻūhā diaphragm ʻano weir no ka media granular abrasive. Pono e hoʻohana ʻia ka papa ʻano kahe no ke koho ʻana i nā kīwī diaphragm ʻano weir. He kūpono nā kīwī diaphragm pololei no nā wai ʻeleʻele, nā slurries sima a me ka media sedimentary. Ma waho o nā koi kikoʻī, ʻaʻole pono e hoʻohana ʻia nā valve diaphragm ma nā pipeline vacuum a me nā mea hoʻoheheʻe.