Insulated steel pipe hi composite pipe system a ni a, pipeline phurh theihna leh insulation technology tha tak tak te a inzawm khawm a ni. Petroleum, chemical, district heating, refrigeration, leh industrial insulation industry-ah te an hmang nasa hle. An core value chu an structural design danglam takah a awm a, chu chuan engineering mamawh, corrosion resistance leh pressure resistance te a tlin rualin heat loss a ti tlem a ni.
I. Insulated steel pipe-a structural component bulpui ber berte .
Insulated steel pipe te hi thil pakhat atanga siam ni lovin three-layer core structure atanga siam a ni zawk: steel pipe hnathawk thei, insulation layer, leh outer shell venna tur a ni. Design thenkhatah chuan auxiliary functional layers, leak alarm line ang chi te pawh an dah tel bawk.
1. Steel pipe hnathawk (inner pipe) .
Working steel pipe hi transported medium (tui lum, steam, emaw oil ang chi) direct carrier a ni. A tlangpuiin seamless steel pipe, spiral welded pipe, emaw straight seam welded pipe hmanga siam an ni. Material hi medium characteristics, carbon steel, stainless steel, emaw alloy steel te hmanga thlan a ni. Inner wall chuan corrosion leh high-pressure resistance mamawh a tlin a ngai a, a pawn lam bang chu insulation layer nen a inzawm tlat tur a ni.
2. Insulation Layer (insulation lam hawia insulation layer) .
Insulation layer hi insulated steel pipe-a core technical layer a ni a, a hnathawh ber chu heat transfer block nan a ni. Insulation material hman tlanglawn tak takte chu:
Polyurethane foam (PUF): thermal conductivity hniam (0.024 w/m·k vel), closed sang-cell content sang tak, leh compressive strength sang tak. Tunah hian insulation material mainstream ber a ni a,-site emaw factory-a prefabricated emaw a nih chuan foam a ni.
Rock wool/glass wool: high-temperature environment (eg, 500℃aia sang ) tan a tha a, mahse density sang tak leh hygroscopicity chak tak a nei thung.
Airgel Composite Layer: Ultra-Light nanomaterial thar, thermal conductivity hniam tak (a thermal conductivity a hniam hle (<0.018 W/m·K), but it is more expensive and is primarily used in specialized, high-end projects.
Insulation layer thickness chu medium temperature, ambient temperature difference, leh economic considerations, a tlangpuiin 30 atanga 150 mm inkar atanga chhut a ni.
3. Hriselna atana hman tur shell (outer sheath) .
Protective shell hian insulation layer chu mechanical damage, UV radiation, leh leilung tichhe thei lakah a venghim a ni. Thil hman tlanglawn tak takte chu:
High-density polyethylene (HDPE): Corrosion-resistant leh waterproof, lei hnuaia installation atana tha, heat-melt welding hmanga siam.
Galvanized steel/aluminum: overhead pipeline emaw high-temperature environment atan hman a ni a, mechanical strength sang tak a pe a, anti-corrosion coating nen a service life a ti rei thei bawk.
Fiberglass Reinforced Plastic (FRP): Corrosion resistance leh thil rit lo tak tak te chu a inzawm khawm a, chu chuan chemical industry ang chi boruak chhe thei tak tak tan a tha hle.
II a ni. Auxiliary structure leh functional extension te .
High-End insulated steel pipe system thenkhat chuan a hnuaia structure te hi an inzawm belh thei ang:
Leakage Alarm Wire: Insulation layer-ah embedded a nih chuan, hnathawk steel pipe-a leak a awm chuan electrical signal inthlak danglamna hmangin fault point chu rang takin a hmu a, chu chuan himna a tichak a ni.
Sliding Bracket/Support Ring: Thermal expansion stress avanga structural damage awm tlem nan long{{0}distance direct-buried pipelines atan hman thin.
Vacuum insulation (a rare and specialized design): Hei hian vacuum hmanga heat conduction a tihziaawm belh a, mahse technical cost a sang hle.
iii a ni. Insulated steel pipe te structural advantages a awm em?
High-efficiency insulation: Multi-layer structure hian synergistically in hna a thawk a, chu chuan steel pipe pangngai aiin thermal conductivity a hniam zawk hle a, chu chuan traditional pipe te aiin heat loss chu 1/5 atanga 1/10 ah a tihhniam a ni.
Long Life: Outer sheath hi corrosion-resistant leh geological subsidence laka inven theih a ni a, design lifespan kum 30 atanga kum 50 vel a ni.
In sak awlsam: Prefabricated direct-Buried insulated pipe hmang hian standardized factory siam chhuah theih a ni a,-site interface buatsaihna chauh a ngai a, sak hun a ti tawi hle.
Environment humhalh leh energy save: Energy bawlhhlawh a tihtlem a, "dual carbon" goal hnuaia green industrial requirements a tlin.
Tawpna
Insulated steel pipe-te structural design hian materials science, thermodynamics, leh engineering application-te inzawmkhawmna thuk tak a keng tel a ni. Inner working steel pipe atanga outer protective casing thlengin, layer tin hi a hnathawh bik atan a tha ber a ni a, a tawpah chuan "efficient transportation + long-Term Insulation + Reliable Protection" thil tum tam tak a nei thei a ni. Insulation material thar (Aerogels leh Nano-insulation coatings ang chi) siam chhuah a nih takah chuan, insulated steel pipe structure chu a rit zual zel ang a, a fing zawk ang a, chu chuan emerging sector thar leh deep-Sea pipelines-a hman theihna an neih theihna a tizau zel ang.
