Butterfly valve chu eng nge ni?

Chumibutterfly valve a nikum 1930 chho vela United States-a siam chhuah a ni. Kum 1950 chho vela Japan ramah rawn luhtir a ni a, kum 1960 chho thleng khan Japan ramah hman a ni lo. Kum 1970 chho vel thleng khan ka ramah chuan a lar lo hle. Butterfly valve-a thil langsar ber chu: operating torque tlem, installation space tlem leh rit lo. DN1000 entirnan la ila,...butterfly valve a ni2T vel a ni a, chutih laiingate valve a nichu 3.5T vel a ni. Chumibutterfly valve a nidrive device hrang hrang nena hman dun a awlsam a, durability leh rintlakna tha tak a nei bawk. Rubber-sealed butterfly valve that lohna chu throttling atana hman a nih chuan hman dik loh vangin cavitation a awm ang a, rubber seat chu a peel off ang a, a chhe bawk ang. Chuvangin, dik taka thlan dan tur chu hnathawh danah a innghat a ni. Butterfly valve hawn leh flow rate inzawmna hi a bul berah chuan linear a ni. Flow rate control nan hman a nih chuan a flow characteristic pawh hi piping flow resistance nen a inzawm tlat a ni. Entirnan, pipeline pahnih valve caliber leh form chu a inang vek a, mahse pipeline loss coefficient a inang lo a nih chuan valve flow rate pawh a danglam hle ang. Valve chu throttling amplitude lian tak a nih chuan valve plate hnung lamah cavitation a awm awlsam a, chu chuan valve a tichhia thei a ni. A tlangpuiin 15° pawnah hman a ni. Chutih lai chuanbutterfly valve a nichu middle opening-ah a awm a, valve body leh butterfly plate hmalam tawp atanga opening shape siam chu valve shaft-ah centered a ni a, a sir lehlamah state hrang hrang siam a ni. Butterfly plate hmalam tawp chu a sir khatah tui luangna lam hawiin a kal a, a sir lehlamah chuan tui luangna lam hawiin a kal bawk. Chuvangin, a sir khatah chuan valve body leh valve plate chuan nozzle ang maia hawnna a siam a, a sir lehlamah chuan throttle hole ang maia hawnna ang chiah a ni. Nozzle lam hian throttle lam aiin flow rate a rang zawk hle a, throttle lam a valve hnuaiah negative pressure a siam ang a, rubber seal pawh a tla fo ang. A hnathawhna torque a nibutterfly valve a nia hawnna hrang hrang leh valve hawn leh khar dan hrang hrang avang hian a danglam thin. Horizontal butterfly valve, a bik takin large-diameter valve-a tui lu chunglam leh hnuai lam inthlauhna avanga torque lo awm chu tui thuk vangin ngaihthah theih a ni lo. Chu bakah, elbow chu valve inlet side-ah dah a nih chuan bias flow a lo awm a, chu chuan torque a ti sang ang. Valve chu middle opening-ah a awm chuan water flow torque action avang hian operating mechanism chu self-locking a ngai a ni.

China hian valve industry chain tam tak a nei a, mahse valve power a ni lo. A tlangpuiin ka ram hi khawvela valve powers zingah a lut tawh a, mahse product quality lamah chuan ka ram hi valve power nih a la hla hle. Industry hian production concentration a la nei tlem hle a, high-end product nena inmil valve-te R&D theihna a la nei tlem hle a, valve industry-ah pawh manufacturing technology level a la hniam hle a, import leh export trade deficit pawh a la zau zel a ni. Market-a dam khawchhuak thei tak tak valve company hi an tam lo tak zet a ni. Mahse, valve industry-a he high-speed shock hian hun remchang lian tak a thlen dawn a, chu shock rah chhuah chuan market kalpui dan chu a rational zawk dawn a ni. High-end valve localization panna kawng hi a “bumpy” hle. Basic parts chu tlakchhamna a lo ni ta a, chu chuan ka ram manufacturing industry hmasawnna chu high-end-ah a tikhawtlai ta a ni. 12th Five-Year Plan chhung hian sorkar chuan high-end equipment parts localization a tipung chhunzawm zel dawn a ni. Hetah hian import substitution-a feasibility analysis atan “Implementation Plan” leh representative valve industry-a hmasawnna pawimawh engemaw zat kan thlang a ni. Analysis atang hian sub-industry hrang hranga valve import substitution tih theih dan chu a inang lo hle tih a hriat theih a, high-end valve te hian policy kaihhruaina leh scientific research support tam zawk an mamawh nghal vat a ni.

Valve industry hian ram economy tihhmasawn kawngah hmanrua siamna industry-ah link pawimawh tak a nih avangin hmun pawimawh tak a chang a ni. Ka ram chhunga valve siamna industry level hi international advanced level atanga hla vak lo a la nih avangin key tam takvalve te a awmparameter sang tak nei, temperature sang leh pressure sang tak nei, leh pound level sang tak nei te chu import-ah an innghat fo thin. Entirnan, European OMAL brand hi ram chhunga valve hmanna industry-a duhthlanna ber a ni fo thin. Valve-te localization tihhmasawn nan State Council-in “Several Opinions on Accelerating the Revitalization of Equipment Manufacturing Industry” a tihchhuah hnuah, a kaihhnawih state department-te chuan hmanraw lian ber berte localization atana state-in a mamawh angin deployment lian tham tak tak an nei a ni. National Development and Reform Commission kaihhruaina hnuaiah China Machinery Industry Federation leh China General Machinery Industry Association te chuan avalve a nilocalization plan for major equipment in related fields, leh department kaihhnawih te nen vawi tam tak inremna an nei tawh bawk. Tunah chuan valve localization hian domestic valve industry-ah inremna a siam ta a ni. Product design-na atana international standards active takin pawm; ram dang design structure tha tak tak (patented technology te pawh tel) absorb; product testing leh performance inspection te hi international standard angin khauh taka kalpui a ni a; ramdang thil siam chhuah dan lama tawnhriat te hip lut a, thil thar zirchianna leh tihhmasawn chu ngaih pawimawh; imported high-parameter valve product-te technical parameter leh hnathawh dan tichiang, etc. te hi localization process ti chak thei tur, valve product update chhunzawm zel tur tihhmasawn dan tur, leh valve localization tihchian theihna tur kawng hrang hrang a ni. Valve industry-a restructuring chakna a san chhoh zel avangin nakin lawka industry chu valve product quality leh safety leh product brand-te inelna a ni dawn a ni. Products te hi technology sang, parameter sang, corrosion resistance chak tak, leh dam rei lam hawiin a lo thang chho dawn a ni. Technological innovation chhunzawm zel, product thar siam chhuah, leh technological transformation hmang chauh hian product technology level chu domestic device matching nena inmil tur leh valve localization a famkim theih nan tihchangtlun zauh zauh theih a ni. Demand nasa tak hnuaiah hian ka ram valve siamna industry hian hmasawnna kawng tha zawk a lantir ngei ang.