Cheki vharafu: Cheki vharafu, inozivikanwawo sevhavha yenzira imwe kana cheki vharafu, inoshandiswa kudzivirira svikiro mupombi kuti isayerera ichidzoka.Ivhavhavha yepasi yekukweva pombi yemvura uye kuvhara zvakare ndeyechikamu checheki valve.Ivhavha inotsamira pakuyerera uye simba repakati kuti rivhure kana kuvhara pacharo, kuitira kudzivirira svikiro kuti risadzoke shure, inonzi cheki valve.Cheki mavharuvhu ndeechikamu cheotomatiki mavharuvhu.Cheki mavharuvhu anonyanya kushandiswa mumapaipi ane unidirectional kuyerera kwemidhiya, achibvumira imwe chete nzira yekuyerera midhiya kudzivirira tsaona.Cheki mavharuvhu anogona kupatsanurwa mumhando nhatu maererano nemaitiro avo: simudza cheki mavharuvhu, swing cheki mavharuvhu, uye butterfly cheki mavharuvhu.Simudza cheki mavharuvhu anogona kupatsanurwa mumhando mbiri: vertical cheki mavharuvhu uye horizontal cheki mavharuvhu.Swing cheki mavharuvhu akakamurwa kuva marudzi matatu: single disc cheki mavharuvhu, kaviri disc cheki mavharuvhu, uye multi disc cheki mavharuvhu.Butterfly cheki mavharuvhu akatwasuka kuburikidza nemavharuvhu echeki, uye marudzi ari pamusoro emavharuvhu echeki anogona kukamurwa kuva marudzi matatu maererano nekubatana: threaded cheki mavharuvhu, flange cheki mavharuvhu, uye welded cheki mavharuvhu.
Kuiswa kwecheki mavharuvhu kunofanirwa kutarisisa kune zvinotevera zvinhu:
1. Usabvumira kuti cheki valve itakure uremu mupombi.Mavharuvhu makuru ekutarisa anofanirwa kutsigirwa akazvimirira kuti adzivise kukanganiswa nekumanikidzwa kunogadzirwa nepipeline system.
2. Panguva yekuisa, teerera kune nzira yekuyerera kwepakati iyo inofanirwa kuenderana neinongedzo yemuseve inoratidzwa pamutumbi wevharuvhu.
3. Simudza mhando ye vertical disc cheki mavharuvhu anofanirwa kuiswa pamapaipi akatwasuka.
4. Rudzi rwekusimudza horizontal disc check valve inofanira kuiswa pahorizontal pipeline.
Main performance parameters ye cheki mavharuvhu:
Nominal pressure kana pressure level: PN1.0-16.0MPa, ANSI Class150-900, JIS 10-20K, nominal dhayamita kana dhayamita: DN15~900, NPS 1/4-36, nzira yekubatanidza: flange, butt welding, shinda, socket welding, nezvimwewo, tembiricha inoshanda: -196 ℃~540 ℃, vharafu muviri zvinhu: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), Ti.Nekusarudza zvinhu zvakasiyana-siyana, cheki valve inogona kukodzera kune akasiyana midhiya senge mvura, chipfunga, mafuta, nitric acid, acetic acid, oxidizing media, urea, nezvimwe.
Nguva yekutumira: Kubvumbi-14-2023