1. Right tih kha thlang rawhHeat Exchanger a ni
(1) I Application atan Type Inhmeh ber thlang rawh
Process fluid, flow rate, operating pressure, temperature, leh heat duty mamawh a zirin heat exchanger chi dik tak-leh-tube heat exchanger, spiral heat exchanger, emaw air{3}}cooled heat exchanger- ang chi chu thlang rawh.
Operating condition nena inmil design thlan hian hun rei tak-a overloading a veng thei a, equipment rintlakna a ti sang bawk.
(2) In sakna hmanrua remchang thlang rawh
Corrosive media atan chuan 316L stainless steel, titanium, duplex stainless steel, emaw nickel-based alloy ang chi thil hman a tha.
Industrial application tlangpui atan chuan 304 stainless steel emaw carbon steel emaw chu corrosion laka invenna tur ruahmanna felfai tak nena inzawm chuan a tha thei ang.
(3) Design Margin tling tak pek phalsak rawh
Heat exchanger hi nakin lawka capacity tihpunna tur, fouling awm thei tur leh process thlak danglam theihna tur allowance tling tak neia design tur a ni.
Design margin tling tak chuan full-load operation chhunzawm zel a tihtlem bakah service life rei zawk a siam bawk.
2. Hnathawh dan nghet tak vawng reng tur
(1) Over-Temperature leh Over-Pressure Operation tih loh tur
Heat exchanger chu a design temperature leh pressure limit tarlan chhungah hman fo ang che.
Design limit aia tam hnathawh chhunzawm zel chuan metal fatigue, plate deformation, weld chhiatna, leh gasket aging a ti chak thei a ni.
(2) Startup leh Shutdown fo thin te tih tlem
Thermal cycling tam hian thermal stress a siam a, chu chuan plate, tube leh welded joint te chu fatigue damage a thlen thei a ni.
A theih phawt chuan stable continuous operation vawng reng tur a ni a, startup leh shutdown kalphung dik tak zawm tur a ni.
(3) Flow Velocity dik tak vawng reng tur
Flow velocity hniam hian sediment a pungkhawm thei a, fouling a thlen thei a, hei hian heat transfer efficiency a ti tlem thei a ni.
Flow velocity sang lutuk hian erosion a thlen thei a, a bik takin particle-containing fluids kan handling hian. Operating flow rate chu siamtuin a rawt range chhungah a awm reng tur a ni.
3. Fouling leh Corrosion venna tur
(1) Tui Quality Tha vawng reng tur
Tui lum emaw, tui circulating emaw chu uluk taka tihfai tur a ni a, chu chuan a khauhna, suspended solids, chloride concentration, leh microbial growth te a control thei a ni.
Tui quality tha hian scaling, biological fouling, leh corrosion te nasa takin a ti tlem a ni.
(2) Heat Exchanger chu tihfai fo thin ang che
Operating condition leh fluid characteristics a zirin cleaning schedule mumal tak siam rawh. Mechanical hmanga tihfai, chemical hmanga tihfai, emaw Clean-in-Place (CIP) hmanga tihfai dan emaw hman theih a ni.
Regular cleaning hian heat transfer efficiency a siam tha a, localized overheating leh corrosion a awm loh nan a pui bawk.
(3) Corrosion Protection tha tak hmang rawh
Corrosive service atan chuan corrosion inhibitor, protective coating, cathodic protection, emaw corrosion-resistant materials te ngaihtuah tur a ni.
Corrosion protection dik tak hian material degradation nasa takin a ti slow a, equipment dam chhung a ti rei bawk.
4. Routine Inspection leh Maintenance tih thin
(1) Sealing System chu enfiah fo thin ang che
Gasket te hi a upa tawh loh, a chhe tawh em, a deformation emaw, a leakage emaw a awm leh awm loh enfiah fo thin ang che.
Fluid leakage ven nan leh rintlak taka hnathawh theih nan seal chhia te chu thlak nghal vat thin ang che.
(2) Operating Parameters te enfiah thin
Inlet leh outlet temperature, operating pressure, flow rate, leh pressure drop te enfiah chhunzawm zel ang che.
Pressure drop sang emaw heat transfer performance tlahniam emaw hian fouling emaw operational issue dang maintenance ngai a awm tih a tilang thei.
(3) Structural Components te enfiah thin ang che
Plate, tube, shell, weld, flange, support leh structural component dangte chu corrosion, crack, deformation, emaw abnormal vibration emaw a awm leh awm loh enfiah fo thin ang che.
Thil chhia hriat hmasak leh siamthat hian hmanrua lian tham a chhiat loh nan a pui thin.
5. Installation leh Operating Procedure dik tak zawm tur a ni
(1) Installation dik tak enfiah rawh
Heat exchanger hi foundation nghet takah dah la, piping stress nasa lutuk lo turin alignment dik tak enfiah rawh.
Support dik tak leh expansion compensation device te hian hnathawh laiin thermal stress tihziaawmna kawngah a pui thin.
(2) Startup leh Shutdown Procedure dik tak zawm tur
Startup laiin temperature leh pressure tihsan zauh zauh la, thermal shock a awm loh nan.
Shutdown lai hian temperature leh pressure tihhniam zauh zauh la, process fluid la awm zawng zawng chu drain la, corrosion leh freezing risk a tlem theih nan.
(3) Operating Condition pangngai lo awm thei lo tur ven
Dry running, flow interruption, cavitation, water hammer, leh pressure inthlak danglam nghal mai te chu pumpelh rawh.
Heng thil danglam tak takte hian mechanical stress nasa tak a thlen thei a, hmanrua dam chhung pawh nasa takin a ti tawi thei bawk.
6. Preventive Maintenance Programme siam tur a ni
(1) Preventive Maintenance Schedule siam rawh
Maintenance plan siam la, chutah chuan hnathawh hun leh process condition a zirin routine inspection, tihfai, lubrication, leh wear parts thlak te pawh a tel.
Preventive maintenance hian beisei loh taka chhiatna a tihtlem bakah hmanrua rintlakna a tisang bawk.
(2) Thil hmanrua Record kimchang tak vawn
Installation information, operating parameters, maintenance history, tihfai hun tur, leh component thlak dan record te record rawh.
Historical data hian condition monitoring a pui a, maintenance planning pawh a ti tha thei hle.
(3) Operating Personnel te zirtir
Operator-te chuan heat exchanger design, a hman dan tur, leh standard operating procedures te an hrethiam tur a ni.
Well-trained personnel te hian operational errors tih tlem nan an pui a, hmanrua tihchhiat theihna a ti tlem bawk.
7. Wear Parts te chu a hun takah thlak leh thin ang che
(1) Gaskets te hi a hun hunah thlak thin ang che
Rubber gasket hi a pianphungah a upa a, a khauh a, hun kal zelah a elasticity a hloh a, service condition angin thlak tur a ni.
Original design specification nena inmil replacement part hman hian sealing performance rintlak tak a siam a ni.
(2) Critical Components te chu a chhe tawh em tih enfiah thin ang che
Plate, tube, bolt, flange leh key component dangte chu a chhe tawh lo, a chhe tawh em, a chhe tawh em tih enfiah fo thin ang che.
Components allowable wear limits aia tam chu siamthat emaw thlak nghal emaw tur a ni a, chutiang chuan thil tenau te chu hmanrua lian tham a nih loh nan.
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