Ukuhlukaniswa okukhulu kanye nemibandela yesevisi yezinto zokuvala ivalvu

Ukuvalwa kwevalvu yingcenye eqakathekileko yevalvu yoke, umnqopho wayo omkhulu kukhandela ukuvuza,ivalvuisihlalo sokuvala sibizwa nangokuthi indandatho yokuvala, siyinhlangano ethintana ngqo nomphakathi ephayiphini begodu ivimbela umphakathi bona ungagelezi. Lokha ivalvu nayisetjenziswako, kunezinto ezihlukahlukeneko ezisephayiphini, ezifana noketshezi, igesi, amafutha, izinto ezibolako, njll., begodu ukuvala kwamavalvu ahlukileko asetjenziswa eendaweni ezihlukahlukeneko begodu angavumelana nezinto ezihlukahlukeneko.

I-TWSValveikukhumbuza bona izinto zokuvala amavalvu zingahlukaniswa zibe ziinkoro ezimbili, okutjho izinto zensimbi nezinto ezingezizo zensimbi. Iimvalo ezingezizo zensimbi zivamise ukusetjenziswa emaphayiphini emazingeni womtjhiso ajayelekileko kanye nokugandeleleka, kuthi iimvalo zensimbi zineensetjenziswa ezinengi begodu zingasetjenziswa emazingeni womtjhiso aphezulu. umfutho ophakemeko.

1. Irabha yokwenziwa

Irabha yokwenziwa ingcono kunerabha yemvelo malungana nokujamelana namafutha, ukujamelana nokutjhisa nokujamelana nokugqwala. Ngokuvamileko, izinga lokutjhisa lokusebenza kwerabha yokwenziwa t≤150°C, irabha yemvelo yi-t≤60°C, begodu irabha isetjenziselwa ukuvala amavalvu we-globe, amavalvu wesango, amavalvu we-diaphragm, amavalvu we-butterfly, amavalvu wokuhlola, amavalvu we-pinch namanye amavalvu anomfutho omncani we-PN≤1MPa.

2. Inayiloni

I-nylon ineempawu zokukhukhumala okuncani nokujamelana nokugqwala okuhle. Inayiloni isetjenziselwa khulu amavalvu webhola kanye namavalvu we-globe anezinga lokutjhisa t≤90°C kanye nomtjhini omncani we-PN≤32MPa.

3. I-Polytetrafluoroethylene

I-PTFE isetjenziselwa khulu amavalvu we-globe, amavalvu wesango, amavalvu webholo, njll.≤232°C kanye nomfutho omncani we-PN≤6.4MPa.

4. Insimbi

I-cast iron isetjenziselwa amavalvu wesango, amavalvu we-globe, amavalvu wepulagi, njll.≤100°C, umfutho we-PN≤1.6MPa, igesi namafutha.

5. I-Babbitt alloy

I-Babbitt alloy isetjenziselwa i-ammonia globe valve enezinga lokutjhisa t-70~150°Ckanye nokugandeleleka kwe-PN≤2.5MPa.

6. I-aloyi yekhopha

Iinsetjenziswa ezijayelekileko zokwenza ama-alloy wethusi yi-6-6-3 ye-tin bronze kanye ne-58-2-2 ye-manganese brass. I-alloy yekhopha inokujamelana nokuguga okuhle begodu ilungele amanzi nomtjhiso ngezinga lokutjhisa t≤200°Ckanye nokugandeleleka kwe-PN≤1.6MPa. Ivamise ukusetjenziswa kumavalvu wesango, amavalvu we-globe, amavalvu wokuhlola, amavalvu wepulagi, njll.

7. Insimbi engagqwali ye-Chrome

Amagreyidi we-chromium stainless steel asetjenziswa khulu yi-2Cr13 kanye ne-3Cr13, ezicimileko begodu zitjhugululwe, begodu zinokujamelana nokugqwala okuhle. Ivamise ukusetjenziswa emavalvuni wamanzi, umtjhiso kanye nephethroliyamu ngezinga lokutjhisa t≤450°Ckanye nokugandeleleka kwe-PN≤32MPa.

8. Insimbi engagqwali ye-Chrome-nickel-titanium

Izinga elisetjenziswa khulu le-chromium-nickel-titanium stainless steel yi-1Cr18Ni9ti, enokujamelana nokugqwala okuhle, ukujamelana nokuguguleka nokujamelana nokutjhisa. Ilungele umtjhiso nezinye iindaba ezinezinga lokutjhisa t≤600°C kanye nomfutho omncani we-PN≤6.4MPa, begodu isetjenziselwa amavalvu we-globe, amavalvu webhola, njll.

9. I-nitriding steel

Izinga elisetjenziswa khulu le-nitriding steel yi-38CrMoAlA, enokujamelana nokugqwala okuhle nokujamelana nokuklwebheka ngemva kokwelatjhwa nge-carburizing. Ivamise ukusetjenziswa emavalvu wesango lesiteshi samandla anezinga lokutjhisa t≤540°Ckanye nokugandeleleka kwe-PN≤10MPa.

10. Ukwenza i-boroni

Ukufaka i-boroni kusebenza ngqo indawo yokuvala ukusuka entweni yomzimba wevalvu nofana umzimba wediski, bese kwenza ukwelatjhwa kwendawo yokuvala. Indawo yokuvala inokujamelana nokuguga okuhle. Nge-valve yokuphephetha kwesitetjhi samandla.

Lokha ivalvu nayisetjenziswako, izinto okufanele zitjhejwe zilandelako:

1. Ukusebenza kokuvala kwevalvu kufanele kuhlolwe ukuqinisekisa ukusebenza kwayo.

2. Hlola bona indawo yokuvala yevalvu sele igugile na, bese uyilungisa nofana uyibuyisele ngokuya ngobujamo.