Kusarudza zvinhu zvakakodzera zvepaipi yemoto isarudzo yakakosha kune mainjiniya ekuchengetedza moto nevashandi vekutenga zvinhu mumaindasitiri. Zvinhu izvi zvinopesvedzera zvakananga kugara kwenguva refu kwepaipi, huremu hwayo, kushanda zvakanaka kwemvura, uye kuramba kwayo kunokonzerwa nezvinhu zvinokanganisa nharaunda. Parizvino, Polyvinyl Chloride (PVC) nePolyurethane (PU) zvinomiririra zvinhu zviviri zvinonyanya kushandiswa mukudzivirira moto uye kuburitsa mvura mumaindasitiri. Kunyange zvazvo zvinhu zvose izvi zvichibatsira kudzivirira kubuda kwemvura uye kuita kuti mvura ifambe zvakanaka, hunhu hwazvo hwepanyama mumamiriro ezvinhu akaoma hunosiyana zvakanyanya, zvichikanganisa mutengo wehupenyu hwese uye kushanda zvakanaka kwemasisitimu ekudzivirira moto.

Kuumbwa kwezvinhu uye hunhu hwemapombi emoto ane PVC

Polyvinyl Chloride (PVC) ipurasitiki yakagadzirwa inoshandiswa zvakanyanya mukugadzira zvinhu zvepurasitiki.pombi yemoto yakajairikazvigadzirwa nekuda kwehunhu hwayo husingadhuri uye kugadzikana kwemakemikari. Mapete ePVC anowanzo gobvu kupfuura mamwe maPU kuti awane kumanikidzwa kwakafanana. Ukobvu uhwu hunobatsira pakurema kwakanyanya, izvo zvinogona kuwedzera nguva yekuiswa panguva yekupindura nekukurumidza. Zvisinei, PVC inoratidza kuramba kwakanaka kumakemikari akasiyana-siyana nemafuta, zvichiita kuti ive sarudzo inoshanda yekuburitsa mvura mumaindasitiri nekudiridza kurima uko kuchinjika kwakanyanya pakupisa kwakaderera hakusi iko kunodiwa zvikuru.

Mabhenefiti ehunyanzvi ePolyurethane (PU) Lined Fire Hoses

Polyurethane (PU) i elastomer inoshanda zvakanyanya inopa chiyero chesimba-ku-huremu chepamusoro kana tichienzanisa nema polymer echinyakare.Hosipa yemoto yakagadzirwa nePU, jira racho rinogona kugadzirwa rakatetepa zvikuru uku richiramba rakasimba uye richiramba richidzivirira kukwenywa.Sangano reNyika reKudzivirira Moto (NFPA)zvinoratidza kuti kuderedza huremu hwemidziyo yemoto kunoenderana zvakananga nekuneta kushoma kwevanodzima moto uye nguva yekupindura iri nani. Matanda ePU anoramba achichinjika zvakanyanya kunyangwe patembiricha yakaderera se -50°C, chiyero apo PVC inowanzo pwanyika uye inowanzo pwanyika.

Kuenzanisa Kushanda Kwemvura Nekurasikirwa Nekukweshana

Kurasikirwa nekukweshana chinhu chakakosha mukushanda kwe hydraulic, sezvo ichitungamira kumanikidzwa kuripo pa nozzle. Ma lining e polyurethane akagadzirwa kuti ave akatsetseka zvakanyanya, zvichikonzera kuti Manning's roughness coefficient yakaderera kana ichienzaniswa nePVC. Kukweshana kwemukati kwakaderera kunobvumira mwero wepamusoro wekuyerera (GPM) padaro refu pasina kuda simba rekuwedzera rekupomba. Mukudzora moto wechivako chepamusoro, kushandisa apombi yemoto ine simba repamusoronePU lining inoita kuti kurasikirwa kwekukweshana kuderedzwa, zvichichengetedza simba rekufamba kwemvura kuti moto upinde zvakanaka.

Kugara Kwenguva Refu uye Kuramba Kuora Kwenzvimbo

Jekete rekunze repaipi yemoto rinopa hunhu hwakanaka, asi mukati memukati memoto munofanira kuramba muchikura uye muchikotama nguva dzose. Mapeji ePU anoratidza kuramba kwakanyanya kwe ozone uye kugadzikana kweUV, izvo zvinodzivirira zvinhu kuti zvisaora kana zvikaiswa pachiedza chezuva kana kusvibiswa nemaindasitiri kwemakore akati wandei. Zvichienderana nehuwandu hweindasitiri kubva kuRemangwana reKutsvaga Musika (MRFR), musika wepasi rose wepaipi yemoto uri kuramba uchichinja uchienda kuTPU (Thermoplastic Polyurethane) nekuda kwekudzivirira kwayo kukwesha kweganda nekatatu kusvika kashanu kana tichienzanisa nePVC yakajairwa. Kugara kwenguva refu uku kunoita kuti PU ive sarudzo inofarirwa kunepombi yemoto ine bhachi mbirizvivakwa zvinoshandiswa munzvimbo dzakaoma dzakadai semigodhi nemasango.

Kuenzanisa kwePVC vs. PU Lined Fire Hoses dzekushandiswa mumaindasitiri

Tafura inotevera inoratidza mashandiro ehunyanzvi hwePVC nePU linings kuti zvibatsire mukusarudza mashandisirwo emaindasitiri nemakanzuru:

Maitiro Ekushanda Ekuongorora Kusimba Kwepombi Yemoto

Kuti vave nechokwadi chekuti mitemo yekuchengetedza yatevedzerwa seNFPA 1962, vatariri vezvivakwa vanofanirwa kutevedzera nzira yekuongorora yakarongeka yevashandi vese.midziyo yekudzima motoKuchengetedza jira rakasimba kwakakosha pakudzivirira njodzi huru panguva yemoto.
1.

Kuongorora Kwekunze Kwekuona: Ongorora bhachi rekunze kuti uone kana paine mavanga, kutsva, kana kuti mavara emakemikari angaratidza kukuvara kwemukati mejira.

2.

Kuongorora Kwemukati meLining: Tarisa nepaipi yemwenje kuti uone chero dhaka kana tsvina iri mukatikubatana kwepaipi yemotonzvimbo.

3.

Kuedzwa kweHydrostatic Pressure: Isa pombi pasi pesimba rayo rekuyedza kuti utarise kana paine kudonhedza kana "dikita" riri kupinda mujaketi.

4.

Kuomesa uye Kuchengeta: Iva nechokwadi chekuti pombi yabviswa mvura uye yaoma usati waikunguruka kudzivirira kukura kwefungus, izvo zvinonyanya kukosha pazvinhu zvakagadzirwa nePVC.

Kuongorora Mari Nemabhenefiti Ekutenga Kwekuchengetedza Moto Kwenguva Refu

Kunyange zvazvo mutengo wekutanga wekutenga hosipaipi yePVC wakaderera, Mutengo Wese weKuvaka (TCO) unowanzo farira Polyurethane. Hupenyu hwebasa rePU hwakareba—hunowanzo kupetwa kaviri kupfuura hwePVC—hunoderedza kuwanda kwekuchinjana. Uyezve, huremu hwakaderera hwehosipaipi dzePU hunobvumira kushandiswa kwehosipaipi diki, dzakatetepa.mavhiri epombi yemoto, kuchengetedza nzvimbo inokosha mumapurani edzimba dzekutengeserana. Kune masangano anokoshesa kuiswa nekukurumidza uye kuvimbika kwenguva refu, mari inoshandiswa mu PU lining yemhando yepamusoro inopa purofiti yakakura kuburikidza nekuwedzera mikana yekuchengetedza uye kuderedzwa kwebasa rekugadzirisa.

Mibvunzo Inowanzo bvunzwa

Mapeteni ePVC nePolyurethane akasiyana sei mukugadzirwa kwemakemikari uye kukanganisa kwezvakatipoteredza?

PVC (Polyvinyl Chloride) ipurasitiki yakasimba inochinjika kuburikidza nekuwedzera ma phthalates, ayo anogona kubuda nekufamba kwenguva, zvichikonzera kuomarara kwezvinhu uye zvinogona kukonzera matambudziko ezvakatipoteredza. Kusiyana neizvi, Polyurethane (PU) ipurasitiki yethermoplastic isingade mapurasitiki kuti arambe achichinjika. PU inowanzoonekwa seyakanaka kune nharaunda uye yakagadzikana, sezvo isingaburitse utsi hune chepfu panguva yekuora kwekupisa kwakanyanya kusvika padanho rakafanana nePVC. Kubva pamaonero ehunyanzvi, chimiro chePU chemamorekuru chinoibvumira kuchengetedza kuchinjika munzvimbo yakakura yekupisa kupfuura PVC.

Ndeipi nzira yekutora nzvimbo yekubatanidza pombi yemoto yakakuvara?

Chekutanga, chikamu chakakuvara chehosipaipi chinofanira kuchekwa zvakanaka uchishandisa muchina unocheka hosipaipi unorema, zvichiita kuti kucheka kwacho kuenderane nehurefu hwehosipaipi. Chechipiri, zvakakodzeramhete yekuwedzera kwepaipikana kuti clamp inofanira kusarudzwa zvichienderana nedhayamita yemukati mepaipi. Chechitatu, shank itsva yekubatanidza inopinzwa mupaipi kusvika yagara zvakasimba pafudzi. Chechina, chishandiso chekuwedzera chinoshandiswa kudzvanya rin'i yemukati memhangura pajira, zvichigadzira chisimbiso chekumanikidzwa kwakanyanya. Chekupedzisira, mubatanidzwa unofanirwa kuongororwa ne hydrostatic ne1.5 kakapetwa kumanikidzwa kwekushanda kuti uone kuchengetedzeka kwekubatana usati wadzorerwa kubasa.

Ndingasarudza sei lining yakakodzera yepayipi yemoto inoshandiswa munzvimbo dzine mamiriro ekunze asina zero?

Kune nzvimbo dzine tembiricha dzinogara dzichidzikira pasi pechando, Polyurethane (PU) ndiyo yega sarudzo inoshanda. Magirazi ePVC anochinjika pakupisa kwakaderera, obva aomarara uye apera simba; kuyedza kuvhura hose yePVC yakaomeswa nechando kunowanzoita kuti jira ritsemuke kana kupatsanurwa nejaketi remachira. Mapurasitiki ePU anoramba akapfava uye anoshanda kusvika -50°C (-58°F). Pakusarudza hose yemamiriro ekunze anotonhora, vatengi vanofanira kusimbisa chitupa che "Cold Bend Test" zvichienderana nemazinga eUL kana EN kuti vave nechokwadi chekuti chinhu chacho chinoramba chichishanda munzvimbo dzeArctic kana munzvimbo dzakakwirira.

Ndezvipi zvisizvo zvinowanzoonekwa nevanhu vakawanda maererano nehuremu hwepaipi yemoto uye kuyera kumanikidzwa kwemhepo?

Pfungwa isiriyo ndeyekuti hosipaipi inorema uye yakakora yakasimba kana kuti inokwanisa kubata kumanikidzwa kwakanyanya. Musainzi yezvinhu zvemazuva ano, ukobvu haufanani nekusimba. Majaketi epolyester ane simba rakawanda pamwe chete nemapurasitiki matete, ane simba rePU anogona kuwana kumanikidzwa kunodarika 900 PSI (62 Bar) uku achirema 30% pasi pehosipaipi yePVC yakajairwa. Imwe pfungwa isiriyo ndeyekuti mapayipi ese e "purasitiki" akafanana; muchokwadi, huwandu hwepolymer uye maitiro ekubatanidza pakati pehosipaipi nejaketi zvinosarudza kugona kwehosipaipi kurwisa "kudonha" pasi pekumanikidzwa kwakanyanya.

Ndezvipi zvinodiwa zvedata repaipi yemoto ine PU yemhando yepamusoro?

Hosipaipi yePU yemhando yepamusoro inowanzova nekumanikidzwa kushanda kwe250-300 PSI uye kumanikidzwa kwakaputika kweinenge 750-900 PSI. Ukobvu hwepairini hunowanzo chengetwa pakati pe0.2mm ne0.4mm kuti huremu nekugara kwenguva refu zvienzane. Zvinoenderana nedata kubvaMitemo yeBritain (BS 6391), Mapaipi emhando yechitatu (anosanganisira machira ePU kana ma lining) anofanira kuratidza huremu hwakanyanya hwe250g kusvika 350g pamita imwe neimwe yedhayamita ye45mm. Pamusoro pezvo, simba rekunamatira pakati pe lining nejira rinofanira kudarika 10 lbs/inch kudzivirira kupatsanurwa panguva yekuchinja-chinja kwekumanikidzwa nekukurumidza.