Butterfly valve leh gate valve-a chhiatna awm fo leh venna tur ruahmanna

Valve hian hnathawh hun bituk chhungin functional requirements pek chu a enkawl chhunzawm zel a, a ti zo vek a, parameter value pek chu range tarlan chhunga vawn rengna performance chu failure-free an ti a ni. Valve performance a chhiat chuan A malfunction a awm ang.

1. Stuffing box atanga tui chhuak

Hei hi tlan, tlan, dripping leh leak-a thil awm ber a ni a, factory-ah pawh hmuh tur a awm fo bawk.

Stuffing box a leak chhan chu hetiang hi a ni.

1Material chu working medium-a corrosiveness, temperature leh pressure nen a inmil lo;

2Filling method hi a dik lo a, a bik takin packing pumpui chu spiral-a dah a nih chuan leakage a awm tam ber

3Valve stem machining accuracy emaw surface finish emaw a tawk lo va, ovality a awm emaw, nicks a awm emaw;

4Valve stem chu pitted a ni tawh a, a nih loh leh boruak zau takah venhimna a awm loh avangin a rust tawh a;

5Valve stem chu a ben a;

6Packing hi hman rei lutuk a ni a, a upa tawh bawk;

7Operation hi a na lutuk.

Packing leakage tihbo dan tur chu:

1 Filler thlan dan dik;

2Kawng dik takin luah khat rawh;

3 Valve stem chu a tling lo a nih chuan siamthat emaw thlak emaw tur a ni a, a chunglam finish chu ▽5 tal a ni tur a ni a, a pawimawh zawk chu ▽8 aia sang a thleng tur a ni a, chhiatna dang a awm lo tur a ni

4 Rust lo turin venhimna hma la la, rust tawhte chu thlak tur a ni;

5Valve stem bending chu tihdik emaw, update emaw tur a ni;

6 Hun engemaw chen packing hman a nih hnuah thlak leh tur a ni;

7Operation chu a stable tur a ni a, hawn zawi zawiin a khar tur a ni a, chutiang chuan temperature inthlak nghal emaw, medium impact emaw a awm loh nan.

2. Closing parts atanga leak chhuak

A tlangpuiin stuffing box a leakage chu external leakage an ti a, a khar lai chu internal leakage an ti bawk. Closing parts, valve chhunga leakage awm chu hmuh a awlsam lo.

Closing parts leakage hi chi hnih ah then theih a ni a, pakhat chu sealing surface atanga leakage a ni a, pakhat chu sealing ring root atanga leakage a ni.

Leakage awm chhante chu:

1Sealing surface chu a ground tha lo a;

2Sealing ring chu valve seat leh valve disc nen a inmil lo hle a;

3Valve disc leh valve stem inzawmna chu a nghet lo va;

4Valve stem chu a ben a, a twisted a, chutiang chuan a chung leh a hnuai lam khar lai chu a laiah a awm lo;

5Close rang lutuk, sealing surface chu a inzawm tha lo emaw, hun rei tak a chhiat tawh emaw;

6 material thlan dik lo, medium-a corrosion tuar thei lo;

7Globe valve leh gate valve te chu regulating valve atan hmang ang che. Sealing surface hian high-speed flowing medium erosion chu a tuar thei lo va;

8Media thenkhat chu valve khar hnuah a lum zauh zauh ang a, chutiang chuan sealing surface chu slits angin a lang ang a, erosion pawh a awm ang

7Sealing surface thenkhat leh valve seat leh valve disc inkarah threaded connection hman a ni a, hei hian oxygen concentration difference battery siam a awlsam a, corrode loose a siam bawk

6Production system-a bawlhhlawh, welding slag, rust, dust, emaw mechanical parts te a tlak avangin valve core a block avangin valve hi khar nghet theih a ni lo.

Hri laka invenna tur ruahmannate chu:

1Hman hmain pressure leh leak uluk takin i test tur a ni a, sealing surface emaw sealing ring zung emaw leakage i zawng tur a ni a, chutah chuan treatment zawhah i hmang tur a ni

2Valve hmun hrang hrang hi a tha em tih enfiah hmasak a ngai. Valve stem chu a ben emaw, a twisted emaw, valve disc leh valve stem a inzawm tha lo emaw a nih chuan hmang suh;

3Valve chu khar nghet tur a ni a, nasa taka khar tur a ni lo. Sealing surface inkara inzawmna a tha lo emaw, daltu a awm emaw i hmuh chuan, a bawlhhlawh chhuah chhuah theih nan rei vak lo i hawng nghal tur a ni a, chutah chuan uluk takin khar tur a ni

4Valve thlan dawnin valve body-a corrosion resistance chauh ni lovin, a kharna hmunte corrosion resistance pawh ngaihtuah tur a ni

5 Valve structural characteristics leh hman dik dan angin, flow siamrem ngai components te chuan regulating valve an hmang tur a ni

6Medium chu a lum a, valve khar hnua temperature danglamna a lian a nih chuan, a lum hnuah valve chu khar nghet tur a ni

7Valve seat, valve disc leh sealing ring te chu thread hmanga inzawm a nih chuan PTFE tape hi thread inkara packing atan hman theih a ni a, chutiang chuan gap a awm lo

8Valve bawlhhlawhah a tlak theih nan valve hmaah filter dah tur a ni.

3. Valve stem lift a chhiat

Valve stem lifting a chhiat chhan te chu:

1Thread chu a hnathawh tam lutuk avangin a chhia a;

2 lubrication awm lohna emaw, lubricant a chhiat emaw;

3Valve stem chu a ben a, a twisted a;

4Surface finish a tawk lo;

5 Fit tolerance a dik lo a, a bite pawh a tight lutuk;

6Valve stem nut chu a inher a;

7 Material thlan dik loh, entirnan, valve stem leh valve stem nut hi thil inang atanga siam a ni a, chu chu seh awlsam tak a ni

8Thread chu medium-in a tichhe a (valve chu dark stem valve emaw, a hnuai lama stem nut nei valve emaw sawina a ni);

7Open-air valve hian venhimna a tlachham a, valve stem thread chu leivut leh hnim hringin a khuh emaw, ruah, ruahtui, vur leh vur tlain a rust emaw a ni.

Inven dan tur: 1.1.

1 Fimkhur taka hnathawh, khar laiin force suh, hawn hunah top dead center thleng suh, handwheel chu hawn hnuah turn khat emaw vawi hnih emaw herh la, thread chunglam chu khar theih khawpin herh la, chutiang chuan medium chuan valve stem chu chunglam hawiin a nawr lo va, a tlak loh nan

2Lubrication condition enfiah fo la, lubrication state pangngaiah vawng reng ang che;

3Valve hi lever sei tak hmangin hawn leh khar suh. Lever tawi hmang thiam hnathawkte chuan valve stem chu a twisting loh nan force awm zat chu khauh takin control tur a ni (handwheel leh valve stem nena inzawm tlat valve sawina

4Sspecification mamawh ang zela processing emaw repair emaw quality tihchangtlun;

5Materiel chu corrosion laka a him tur a ni a, hnathawhna temperature leh hnathawhna hmun dang nena inmil tur a ni;

6Valve stem nut hi valve stem ang chiaha siam tur a ni lo;

7 Plastic chu valve stem nut atana hman hunah a chakna enfiah tur a ni a, corrosion resistance tha leh friction coefficient te chauh ni lovin, a chakna buaina pawh, a chakna a tawk lo a nih chuan hmang suh

8Valve stem venna khuhna chu open air valve-ah dah tur a ni;

7Valve hawn pangngai tan chuan valve stem a rust loh nan handwheel hi her kual fo ang che.

4. Midang

Gasket atanga leak chhuak:

A chhan ber chu corrosion a do thei lo va, hnathawhna temperature leh pressure-ah pawh a insiamrem loh vang a ni; leh temperature sang tak valve temperature inthlak dan te a ni.

Hnathawh dan tur atana tha gasket hmang rawh. Gasket material chu valve thar atan a tha em tih enfiah rawh. A remchan loh chuan thlak mai tur a ni. Temperature sang tak valve tan chuan hman laiin bolt te kha khauh leh rawh.

Valve taksa a chhe tawh:

A tlangpuiin freezing vang a ni. Khua a vawt chuan valve hian thermal insulation leh heat tracing measures a nei tur a ni. Chutiang a nih loh chuan valve chhunga tui leh connecting pipeline-a tui awmte chu production tihtawp hnuah a chhuak tur a ni (valve hnuai lamah plug a awm chuan plug chu a chhuah theih nan hawn theih a ni).

Handwheel chhia: 1.1.

Impact emaw lever sei tak hnathawh nasat vang emaw a ni. Operator leh a kaihhnawih midangte ngaihven phawt chuan pumpelh theih a ni.

Packing gland a chhe tawh a:

Packing compress laiin chakna inang lo, emaw gland chhia (a tlangpuiin cast iron) emaw. Packing chu compress la, screw chu symmetrically-in rotate la, skew suh. Manufacturing-ah hian part lian leh key te chauh ngaihven tur a ni lo va, secondary parts glands te pawh ngaihven tur a ni a, chuti lo chuan hman dan a nghawng dawn a ni.

Valve stem leh valve plate inzawmna a chhiat chuan:

Gate valve hian valve stem-a rectangular head leh gate-a T-shaped groove inzawmna chi hrang hrang a hmang a, T-shaped groove hi a chang chuan process a nih loh avangin valve stem-a rectangular head chu a chhe nghal vat thin. A bik takin manufacturing aspect atanga chinfel tur. Mahse, a hmangtu chuan T-shaped groove hi a siam thei bawk a, chu chuan a smoothness engemaw zat a nei thei a ni.

Double gate valve gate hian cover chu a press nghet thei lo:

Double gate tension hi top wedge atanga siam a ni. Gate valve thenkhat tan chuan a chunglam wedge hi thil tha lo (low-grade cast iron) a ni a, hman zawhah a chhe emaw, a chhe emaw thuai ang. Top wedge hi a te deuh a, material hman pawh a tam lo hle. A hmangtu chuan carbon steel hmangin a siam thei a, original cast iron chu a thlak thei bawk.