Apersi
valvi en prodwi enportan dan masin an zeneral. i ganny enstale lo diferan tiyo ou laparey pou kontrol koule medyom par sanz rezyon kanal dan valv. son bann fonksyon i: konekte oubyen koup sa medyom, anpes sa medyom koul an aryer, aziste bann paramet tel ki presyon ek koule mwayen, sanz direksyon koule sa medyom, diviz sa medyom oubyen protez bann tiyo ek lekipman kont overpressure, eksetera.
I annan plizyer varyete prodwi valv, ki ganny divize anvalv baro, globe valve,valv tyeke, valv boul,valv papiyon, valv ploz, valv dyafragm, valv sekirite, valv regilasyon (valv kontrol), valv gaz, valv rediksyon presyon e bann latrap, eksetera; dapre materyo, i ganny divize an alye kwiv, fonte, lasye karbonn, alye feray, lasye ostenitik, feritik-ostenitik doub-faz feray, alye baze lo nikel, alye titanyom, plastik enzenyer ek valv seramik, eksetera. An plis, i annan bann valv spesyal tel ki valv ultra-o presyon, valv vacuum, valv pou laliny kouran e bann tiyo, bann valv pou lendistri nikleer, bann valv pou bann bato e bann valv kriyozenik. en gran varyete paramet valv, groser nominal depi DN1 (inite an milimet) ziska DN9750; presyon nominal sorti dan ultra-vacuum 1× 10-10 mmHg (1mmHg = 133.322Pa) a presyon tre o PN14600 (younit 105 Pa); tanperatir travay i varye depi tanperatir tre ba -269℃ziska en tanperatir tre o 1200℃.
bann prodwi valv i ganny servi bokou dan diferan sekter lekonomi nasyonal, tel ki delwil, gas natirel, rafinnman ek transformasyon delwil ek gas e sistenm transpor tiyo, prodwi simik, sistenm prodiksyon farmasetik ek manze, lenerzi idro, lenerzi termik e sistenm prodiksyon lenerzi nikleer; Diferan kalite valv i ganny servi dan bann sistenm sofaz ek kouran, sistenm prodiksyon metalirzik, sistenm liquid pou bato, transpor, avyon e diferan masin sportif, e sistenm irigasyon ek drenaz pou later lagrikiltir. an plis, dan domenn bann nouvo teknolozi tel ki defans ek aerospasyal, diferan valv avek bann propriyete spesyal i osi ganny servi.
bann prodwi valv i reprezant en gran proporsyon bann prodwi mekanik. dapre statistik bann pei endistriyalize etranze, valer sorti bann valv i reprezant apepre 5% valer sorti lendistri masin an antye. dapre statistik, en santral nikleer tradisyonnel konpoze de milyon younit kilowat i annan apepre 28,000 valv partaze, e ladan apepre 12,000 i bann valv zil nikleer. en konpleks petrosimik modern lo gran lanpler i demann plizyer santenn milye diferan valv, e lenvestisman dan bann valv i zeneralman reprezant 8% a 10% lenvestisman total dan lekipman.
sitiasyon zeneral lendistri valv dan ansyen lasin
01 Landrwa nesans lendistri valv Lasin: Shanghai
dan ansyen lasin, shanghai ti premye landrwa pou fabrik bann valv an sin. an 1902, latelye kwiv Pan Shunji, ki trouve lo semen Wuchang, distrik Hongkou, Shanghai, ti konmans fabrik bann pti lo robine teapot par lanmen. sa robine teapot i en kalite kok an kwiv. i premye fabrikan valv an Sin ki'n ganny konnen ziska prezan. an 1919, Deda (Shengji) Hardware Factory (predeseser Shanghai Transmission Machinery Factory) ti komans avek en pti bisiklet e ti konmans prodwi bann kok kwiv pti dyamet, valv glob, valv baro e idran dife. Fabrikasyon bann valv an feray ti komanse an 1926, avek en groser nominal maksimonm NPS6 (an pous, NPS1 = DN25.4). pandan sa peryod, bann lizin hardware tel ki Wang Yingqiang, Dahua, Lao Demao ek Maoxu ti osi ouver pou fabrik bann valv. apre, akoz logmantasyon dan demann pou bann valv plonbri dan marse, en lot batch lizin hardware, lizin feray, lizin founder disab (casting) e lizin masin ti ouver pou fabrik valv enn apre lot.
en group fabrikasyon valv i ganny formen dan bann rezyon Zhonghongqiao, Waihongqiao, Daming Road e Changzhi Road dan distrik Hongkou, Shanghai. Sa letan, bann mark ki ti pli vann lo marse domestik ti “Latet Seval”, “Trwa 8″, “Trwa 9″, “Doub Pyes larzan”, “Lank Feray”, “Boul Poul” ek “Boul Leg”. bann prodwi kwiv ba presyon ek valv an feray i prensipalman ganny servi pou bann valv plonbri dan bann fasilite batiman ek sanniter, e en pti kantite valv an feray i osi ganny servi dan sekter lendistri textil leze. sa bann lizinn i tre pti an lanpler, avek teknolozi aryere, lekipman lizinn senp e prodiksyon valv ba, me zot landrwa nesans pli boner lendistri valv Lasin. Pli tar, apre letablisman lasosyasyon materyo konstriksyon Shanghai, sa bann fabrikan valv in zwenn lasosyasyon enn apre lot e in vin sa group waterway. manm.
02De gran lizin fabrikasyon valv
o komansman 1930, lizin masin Shanghai Shenhe ti fabrik bann valv baro an feray ba presyon anba NPS12 pou bann travay delo. an 1935, lizinn ti etablir en lantrepriz konzwent avek Xiangfeng Iron Pipe Factory e bann aksyonner Xiangtai Iron Co., Ltd. pou konstrir Daxin Iron Factory (predeseser Shanghai Bicycle Factory), an 1936 Konplete e met an prodiksyon, i annan preski 1000 anplwaye, avek 26 zhang enporte.≈3.33m) tour ek lekipman levman, prensipalman prodwi bann akseswar endistriyel e miner, tiyo delo an fonte ek bann valv an feray, groser nominal sa valv i NPS6 ~ NPS18, e i kapab konsevwar e fourni bann set konplet bann valv pou bann lizinn delo, e bann prodwi i ganny eksporte ver Nanjing, Hangzhoung e Beijing. Apre ki bann anvaisan Zaponnen “le 13 Out” ti okip Shanghai an 1937, laplipar lizinn ek lekipman dan lizinn ti ganny detrir par dife artileri Zaponnen. Lannen swivan ti ogmant kapital e ti repran travay. pou rekipere ziska lavey fondasyon Nouvo Lasin.
an 1935, senk aksyonner enkli Li Chenghai, en biznesmenn nasyonal, ti konzwentman etablir Shenyang Chengfa Iron Factory (predeseser Tieling Valve Factory) lo semen Shishiwei, Distrik Nancheng, Lavil Shenyang. repar e fabrik bann valv. an 1939, lizinn ti ganny bouze lo semen Beierma, distrik Tiexi pou lagrandisman, e de gran latelye pou fosaz ek masin ti ganny konstrir. an 1945, i ti'n ariv 400 anplwaye, e son bann prodwi prensipal ti: bann gran sofer, bann valv kwiv, e bann valv an feray anba later avek en groser nominal anba DN800. Shenyang Chengfa Iron Factory i en fabrikan valv ki pe lite pou sirviv dan ansyen Lasin.
03lendistri valv par deryer
pandan lager anti-zaponnen, bokou lantrepriz dan Shanghai e lezot landrwa ti bouz dan sid was, alor lakantite lantrepriz dan Chongqing e lezot landrwa dan rezyon deryer ti ogmante, e lendistri ti konmans devlope. an 1943, lizin masin Chongqing Hongtai ek lizin masin Huachang (tou le de lizin ti bann predeseser lizin valv Chongqing) ti konmans repar e fabrik bann pyes plonbri ek valv ba presyon, ki ti zwe en gran rol dan devlopman prodiksyon pandan lager dan bann valv aryer e rezourd bann valv sivilyen. Apre laviktwar Lager Anti-Zaponnen, Lizin Materyo Lisheng, Sosyete Endistriyel Zhenxing, Lizin Materyo Jinshunhe ek Lizin Materyo Qiyi ti ouver siksesivman pou prodwi bann pti valv. apre fondasyon nouvo lasin, sa bann lizinn ti ganny zwenn avek chongqing valve factory.
Sa letan, sertenfabrikan valvdan Shanghai ti osi al Tianjin, Nanjing ek Wuxi pou konstrir bann lizinn pou repar e fabrik bann valv. serten lizinn hardware, lizinn tiyo feray, lizinn masin oubyen santye bato dan Beijing, Dalian, Changchun, Harbin, Anshan, Qingdao, Wuhan, Fuzhou e Guangzhou in osi angaze dan reparasyon e fabrikasyon serten valv plonbri.
ler poste: 21-Zilyet-2022
