[Tsanangudzo Yakawanda] Polyethylene ipurasitiki, inozivikanwa nehupamhi hwehuwandu hwehuwandu, kushanduka uye kugadzikana kwemakemikari. Yakanakira kudzvanywa uye isiri-kumanikidza piping application. Mapaipi eHDPE anowanzo gadzirwa ne polyethylene 100 resin, ine density ye930-970 kg/m3, iyo inenge kanomwe yesimbi.

Polyethylene ipurasitiki, inozivikanwa nehupamhi hwehuwandu hwehuwandu, kushanduka uye kugadzikana kwemakemikari. Yakanakira kudzvanywa uye isiri-kumanikidza piping application. Mapaipi eHDPE anowanzo gadzirwa ne polyethylene 100 resin, ine density ye930-970 kg/m3, iyo inenge kanomwe yesimbi. Mapombi akareruka ari nyore kutakura uye kuisa. Polyethylene haina kukanganiswa ne electrochemical corrosion process, uye zvakajairika kuti mapaipi apinzwe munyu, asidhi uye alkali. Iyo yakatsetseka pamusoro pe polyethylene tube haizove yakasvibiswa, uye kupesana kwakaderera, saka pombi yepurasitiki haigoni kukanganiswa nekukura kwe microorganisms. Kugona kuramba kukuvadzwa kwecorrosion uye kuenderera kuyerera kunoita kuti zvinodiwa zvekuchengetedza HDPe mapaipi adzike zvakanyanya. Polyethylene pombi inogona kugadzirwa neyakasimbiswa resin, yakarongedzerwa se PE100-RC, uye yakawedzerwa kuti inonoke kutsemuka kukura. Mapombi anogadzirwa anogona kuva nehupenyu hurefu hwebasa, uye polyethylene ine mukana wehupfumi muhupenyu hwepurojekiti.

Ikozvino kuti kusimba kwemapombi eHDPe kwakatemwa, hupfumi hwakakosha zvikuru kana pombi dzepolyethylene dzichishandiswa mukushandiswa kwemvura yekuchengetedza zvivakwa. Kuenzaniswa ne ductile iron mapaipi, iyo inonyanya kujeka mukana we polyethylene pombi ndeyekuti vanogona kudzivirira kubuda. Kune marudzi maviri ekudonha kwepombi: kudonha kwemajoini, kuputika kwekuputika uye kubuda kweperforation, zviri nyore kubata.

Saizi yeHDPE pombiiri pakati pe1600 mm ne3260 mm, uye mapaipi makuru ari pamusika anogona kushandiswa. Kuwedzera kune masisitimu ekupa mvura yemasisita, mapaipi epurasitiki akakura-diameter akagadzirwa nepolyethylene anogona zvakare kushandiswa mukubvisa mvura yegungwa uye nzvimbo dzekuchenesa mvura. Mapaipi makuru dhayamita anogona kubva 315 cm kusvika 1200 cm. Iyo yakakura dhayamitaHDPe pombiyakasimba zvikuru uye yakavimbika. Mushure mekuvigwa muvhu, inogona kumhanya kwemakumi emakore uye inoda kugadziridzwa kushoma, saka yakanyatsokodzera kushandiswa kwekuchenesa mvura. Kusimba kwepombi ye polyethylene kunowedzera sezvo ukuru hwayo huchiwedzera, zvichiratidza zvinoshamisa anti-vibration performance. Tora kudengenyeka kwepasi kweKobe muna 1995 muJapan semuenzaniso, zvivakwa zvemaguta; mamwe mapaipi ese anokundikana kamwechete pamakiromita matatu, uye iyo yese HDPE pombi system ine zero kutadza.

Zvakanakira HDPE pombi: 1. Kugadzikana kwakanaka kwemakemikari: HDPE haina polarity, yakanaka kugadzikana kwekemikari, haibereke algae uye mabhakitiriya, haina kuyera, uye inogadzirwa nemhoteredzo. 2. Simba rakanaka rekubatanidza: shandisa socket electric fusion kana butt joint thermal fusion, ine majoini mashoma uye pasina kubuda. 3. Kuramba kwemvura yakaderera: The mukati pamusoro peHDPe pombiyakatsetseka, ine yakaderera kupfeka kuramba coefficient uye yakakura kuyerera. 4. Kuramba kwakanaka kune yakaderera tembiricha uye brittleness: brittleness tembiricha iri (-40), uye anokosha ekudzivirira matanho haadiwi kuderera tembiricha kuvaka. 5. Good abrasion resistance: Kuenzanisa muedzo weabrasion resistance ye polyethylene pombi uye simbi pombi inoratidza kuti abrasion resistance ye polyethylene pipes ndeye 4 nguva yepombi dzesimbi. 6. Kusakwegura uye hupenyu hurefu hwebasa: HDPE pombi inogona kuchengetwa kana kushandiswa kunze kwemakore makumi mashanu pasina kukuvadzwa nemwaranzi ye ultraviolet.