Nitin butterfly valve hmannaah hian chhiatna chi hrang hrang kan tawk fo thin. Butterfly valve-a valve body leh bonnet-a leakage hi a chhiatna tam tak zinga pakhat a ni. Hetiang thil thleng chhan hi eng nge ni? Glitches dang hriat tur a awm em? TWS butterfly valve hian a hnuaia dinhmun hi a khaikhawm a, .
Part 1, Valve body leh bonnet atanga leak chhuak
1. Thir casting-a casting quality a sang lo va, valve body leh valve cover body-ah hian blisters, loose structures, leh slag inclusions ang chi chhiatna a awm a
2. Van chu a vawt a, a chhe bawk a;
3. Welding tha lo, slag inclusion, unwelded, stress cracks, etc. te ang chi chhiatna a awm a;
4. Cast iron butterfly valve chu thil rit takin a rawn deng a, a chhiat phah thin.
enkawl dan tur
1. Casting quality tihchangtlun nan install hmain dan angin chakna test neih hmasak phawt tur a ni;
2. Forbutterfly valve te pawh a awm0 aia hniam a nih chuan°C leh a hnuai lam chu lum emaw, lum emaw-ah dah tur a ni a, butterfly valve hman tawh lohte chu tui khawlkhawm atanga paih chhuah tur a ni
3. Welding atanga siam valve body leh bonnet welding seam chu welding operation kalphung kaihhnawih angin tih tur a ni a, welding zawhah flaw detection leh strength test neih tur a ni
4. Butterfly valve-ah thil rit tak tak nawr leh dah khap a ni a, cast iron leh non-metallic butterfly valve-te chu hand hammer hmanga vuak phal a ni lo. Diameter lian tak tak butterfly valve dahnaah hian bracket a awm tur a ni.
Part 2. Packing laiin leakage a awm
1. Filler thlan dik lo, medium corrosion do thei lo, pressure sang emaw vacuum emaw do thei lo, temperature sang emaw temperature hniam emaw butterfly valve hman
2. Packing hi a dik lo a, a chhiatna a awm a, chu chu spiral coil joint lian, chhe lo, tight top leh loose bottom aia te te thlak a ni
3. Filler chu a upa tawh a, service life piah lamah a elasticity a hloh tawh a;
4. Valve stem precision a sang lo va, bending, corrosion, leh wear ang chi defect a awm bawk;
5. Packing circle awm zat a tlem a, gland pawh a press nghet lo;
6. Gland, bolt, leh a peng dangte a chhia a, chuvangin gland chu nghet taka press theih a ni lo;
7. Hman dan dik lo, chak lutuk, etc.;
8. Gland hi a skewed a, gland leh valve stem inkar gap a tlem lutuk emaw, a lian lutuk emaw a, chu chuan valve stem a chhe a, packing a tichhia a ni.
enkawl dan tur
1. Filler hman dan tur leh a chi hrang hrang chu hnathawh dan azirin thlan tur a ni a;
2. Dan kaihhnawih angin packing dik takin dah la, packing chu pakhat hnu pakhatin dah leh compact tur a ni a, joint chu 30-ah dah tur a ni°C emaw 45 emaw a ni°C;
3. Service life rei tak, tar leh chhiatna nei packing chu a hun takah thlak tur a ni;
4. Valve stem chu a ben a, a hrual hnuah a dinglam a, siam that a ngai a, a chhe tawh chu a hun takah thlak leh tur a ni;
5. Packing chu turn zat bituk angin dah tur a ni a, gland chu symmetrically leh evenly tighten tur a ni a, gland chu pre-tightening gap 5mm aia tam a nei tur a ni
6. Gland, bolt leh thil dang chhia te chu a hun taka siamthat emaw thlak emaw tur a ni;
7. Hman dan tur chu, impact handwheel tih loh chu, speed leh chakna pangngaia thawk tur a ni;
8. Gland bolt te hi a ruala leh symmetrically in tihkhauh tur a ni. Gland leh valve stem inkar gap a tlem lutuk chuan gap chu a remchan dan anga tihpun tur a ni; gland leh valve stem inkar gap a lian lutuk chuan thlak tur a ni.
Part 3 Sealing surface atanga leak awm
1. Sealing surface chu ground flat a ni lo va, close line a siam thei lo;
2. Valve stem leh closing member inzawmna chunglam lai tak chu a innghat a, a dik lo emaw, a chhe tawh emaw a nih chuan;
3. Avalve a nistem chu a ben emaw, a inzawm khawm dik lo emaw a nih chuan, a khar lai chu a skewed emaw, out of center emaw a ni a;
4. Sealing surface material quality thlan dik loh emaw, hnathawh dan azirin valve thlan loh emaw a ni.
enkawl dan tur
1. Gasket hman dan tur a zirin material leh type dik taka thlan tur;
2. Fimkhur taka siamrem leh tluang taka hnathawh;
3. Bolt te chu a ruala leh symmetrically in tihkhauh tur a ni. A tul chuan torque wrench hman tur a ni. Pre-tightening force hian a mamawh a tlin tur a ni a, a lian lutuk leh a te lutuk tur a ni lo. Flange leh threaded connection inkarah hian pre-tightening gap engemaw zat a awm tur a ni;
4. Gasket assembly chu a laiah align tur a ni a, force pawh a inang vek tur a ni. Gasket hi a inzawm khawm phal a ni lo va, double gasket hman a ni lo;
5. Static sealing surface chu a corroded a, a chhe a, processing quality pawh a sang lo. Static sealing surface chu a mamawh ang zela a tlin theih nan siamthat, grinding, leh coloring inspection te neih a ngai a
6. Gasket i dah dawnin faina lam ngaihven tur a ni. Sealing surface chu kerosene hmanga silfai tur a ni a, gasket chu leiah a tla lo tur a ni.
Part 4. Sealing ring joint-a leakage awm
1. Sealing ring chu a roll nghet lo;
2. Sealing ring chu taksaah weld a ni a, a chunglam quality pawh a tha lo;
3. Sealing ring connecting thread, screw leh pressure ring te chu a lo chhuak a;
4. Sealing ring chu a inzawm a, a corroded a ni.
enkawl dan tur
1. Sealing rolling place-a leak awm chuan adhesive inject tur a ni a, chutah chuan roll leh fix tur a ni;
2. Sealing ring chu welding specification angin rewelded tur a ni. Surfacing welding siamthat theih a nih loh chuan original surfacing welding leh processing chu paih chhuah tur a ni a;
3. Screw te chu la chhuakin pressure ring chu tifai la, a chhia te chu thlak leh la, sealing surface leh connecting seat chu grind la, inzawm khawm leh rawh. Part corrosion chhiatna lian tak nei tan chuan welding, bonding leh kawng dang hmangin siamthat theih a ni a;
4. Sealing ring connecting surface chu a corroded a, chu chu grinding, bonding, etc. hmanga siamthat theih a ni a, siamthat theih loh chuan sealing ring thlak tur a ni.
Part 5. Leakage hi closure a tlak chuan a awm thin
1. Hnathawh \ha lo chuan a kharna hmunte a tikhawlo a, a inzawmnate pawh a chhe a, a chhe bawk a;
2. Closing part inzawmna chu a nghet lo va, a lo chhuak a, a tla bawk;
3. Connecting piece-a material chu thlan a ni lo va, medium-a corrosion leh machine-a a chhe lai pawh a tuar thei lo.
enkawl dan tur
1. Hman dan dik, butterfly valve chu chakna nasa lutuk lovin khar la, butterfly valve chu top dead point aia tam lo hawng rawh. A hnuah chuanbutterfly valve a nia inhawng kim tawh a, hand wheel chu tlem a hnunglam hawi tur a ni;
2. Closing part leh valve stem inzawmna chu a nghet tur a ni a, threaded connection-ah chuan backstop a awm tur a ni;
3. Closing part leh valve stem inzawmkhawmna atana hman fastener te hian medium a corrosion tuar thei tur a ni a, mechanical strength leh wear resistance engemaw zat an nei tur a ni.
Post hun chhung: Dec-14-2024
