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 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, ke 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 me ka ʻili o ka sila. 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 ʻōpū o ka ʻīpuka, hiki ke hoʻokaʻawale ʻia i ʻelua 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 me ka mālama ʻana, ke 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, ke ʻano pololei, ke ʻano kihi ʻākau a me ke ʻano o kēia manawa.

3 Nā ʻōlelo kuhikuhi koho valve maʻamau

3.1 Nā ʻōlelo aʻoaʻo koho ʻīpuka puka

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 kīwaha mea hana, nā kīwaha hoʻohālike, nā kīwaha kaomi, a me nā mea ʻē aʻe; 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 pōkā

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 ʻo 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 hana.