ANSI B 73 1 STANDARD PROCESS PUMPS WILL

ANSI B 73. 1 STANDARD PROCESS PUMPS WILL SATISFY YOUR ON-SITE CHEMICAL REQUIREMENTS WITH BEST QUALITY AND MOST EFFICIENT PERFORMANCE. Mechanical Seal관련 기술자료 (Trouble Shooting / API Plan等) ■ Mechanical Seal Trouble Shooting ☆ 이상 요인 및 대책 => (P-1) / (P-2) / (K-1) / (K-2) / (K-3) ■ Mechanical Selection ☆M/Seal의 선정순서 => (P-1) / (K-1) ☆Technical Data =>(K-1) ■ Mechanical Seal Slurry에 대한 대책 ■ 각종 용어 정리 ☆ FLUSHING / QUENCHING / COOLING / DOUBLE M/SEAL 방식 / FLUSHING 유량/기기의 정밀도 ■ API PLAN ☆ API PLAN 11 / 13 / 23 / 31 / 32 / 53 / 54 / 62 ☆ API 610 Piping Plan Drawing ☆ Typical Mechanical Seal Arrangement WILO PUMP 연구실

Mechanical Selection 설계요인 液質 M/Seal의 선정순서(P-1) M/SEAL선정 구체적조건 고형물(固形物) Slurry 없음 Carbon vs 硬質材 Slurry 있음 硬質材 vs 硬質材 부식성의 有無 液溫 압력 周速 (V) PV치 無 표준 硬質材 有 耐蝕 구조재 @External @Double seal @Stick대책 60 ℃ 이하 냉각장치 불요 60 ℃ 이상 Cooler 설치 7 kgf/㎠ 이하 Unbalance형 Seal 7 kgf/㎠ 이상 Balance형 Seal 20 m/sec 미만 회전형 Seal 20 m/sec 이상 정지형 Seal 高 500 이상 遊動環形 Seal 中 500 이하 Pressing형 정지형 Seal 低 300 이하 회전형 표준구조 <참고자료> M/Seal에서의 누설 가능한 경로 Stuffing Box의 손상 및 부식 Seal Plate Packing Floating Seat Packing Carbon의Chipping 또는 Crack Spring의 잘못된 감김방향 Rotary Seal Ring Packing Shaft의 흠집등의손상 7 Face Leakage

Mechanical Selection M/Seal의 선정순서(K-1) PUMPS Question H 1. Horizontal인가? Vertical인가? 2. 유체가 유독한가? 3. Seal부위에서 유체가 기상(기체상태)인가? 4. 액체가 산인가? 5. 액체가 수용액인가? 6. 포화용액인가? 7. 결정화하는가? 8. 마모성 물질을 함유하고 있는가? 9. Cyclone Separator에 의해 마모성 물질을 제거할수 있는가? 10. 액체가 공기와 접촉했을때, 인화성, 부식성, 분해성이 있는가? 11. Seal과 대기 사이에 Quenching 할수있는 Steam이나 액체가 있는가? 12. 액체가 묽어짐에 관계없이 External Flushing을 할수 있는가? Y 2. Y N 7. M N N 8. 9. N 8. S N Y N 9. 10. 약어 ◆H: Horizontal (수평형) ◆V: Vertical (수직형) ◆Y: Yes ◆N: No ◆M: Much (영향많음) ◆S: Slight (약간있음) Y N S M N Y Y Y A F N 11. N 12. G N 12. Y E 8. S N M 10. Y D 7. 8. N S M 10. Y C Y N 12. B 6. N 8. M S 11. A 5. N N Y 6. Y S N Y Y Y 4. N 5. M 8. N N 4. Y 2. N 3. Y V 1. Y H I J K A Seal Type 및 보조장치 Type A B C D E Double RO / X-200 C 1 L(내마모/내산성) RO / CBR RO F G RO / CBR RO API Plan 53 Pressurized Sealant between Seals 32 External Clean Flushing 62 Self Flushing with a Cyclone Separator 31 Self Flushing 11 Self Flushing with a Cyclone Separator, Steam or Liquid Quenching, Hard Faces 32, 62 Self Flushing , Close Fitting Neck Bush, Steam or Liquid Quenching, Hard Faces 11, 62 H I J K RO / CBR C 1 L(내마모/내산성) Close Fitting Neck Bush, External Clean Flushing Reverse Flushing 기호 보 10 조 장 치 32 32 13 13

Mechanical Selection Technical Data (K-1) Mechanical Seal에 있어서의 제일 중요한 섭동면의 재질은 유체의 부식성, 사용온도, 마모성 물질 함유량등에의하여 선정되며 최고 PV치 한계를 넘어서는 안된 또한 Packing 재질은 Sealing 유체의 화학적 성질, 사용온도에 따라 선정한다. PV치는 Seal의 선정에 있어 중요한 값으로 다음에 의해서 결정된다. PV = 압력(bar) * 주속(m/sec) = 압력(bar) * π * 축경(mm) * 회전속도(rpm)/60000 참고로, 표준 대기압인 1 atm =1. 0332 kgf/㎠ =760 mm. Hg = 10. 33 m. Aq = 1. 01325 Bar 임. 그림. 섭동면 PV치의 한계 습동면 “PV” 한계치 ( bar * m/sec ) Other Fluids Water & Aqueous Solutions (물 및 수용성 물질) Unbalanced Seals Balanced Seals Stainless Steel / Carbon 5. 5 --- 30 --- Lead Bronze / Carbon 23 --- 36 --- Stellite / Carbon 49 85 52 580 Chrome Oxide / Carbon 70 440 --- Alumina Ceramic / Carbon 36 250 88 420 Tungsten Carbide/ Tungsten Carbide 44 500 71 420 Tungsten Carbide/ Carbon 70 700 88 1225 그림. Packing 의 사용 온도 한계 Temperature ℃ Minimum(최소) Maximum(최대) Seal Material High Nitrile Rubber (NBR) Ethylene Propylene Rubber (EPR) Viton Fluoro Elastomer PTFE (Teflon) High Temperature Polymers (Kalrez) Compressed Asbestos Fibre Pure Graphite Materials -30 -50 -30 -100 -200 11 120 150 200 250 300 400 3000

API 610 PIPING PLAN DRAWING Technical Data I V Q/D ■ API PLAN 01 ■ Integral (internal) recirculation from pump discharge to seal V ■ API PLAN 02 ■ CI / CO Q/D Dead-ended seal chamber with no circulation of flushed fluid; water-cooled stuffing box jacket and throat bushing required when specified Plugged connections for possible future circulating fluid V ■ API PLAN 11 ■ Recirculation from pump case through orifice to seal 18 F Q/D

API 610 PIPING PLAN DRAWING Technical Data V ■ API PLAN 12 ■ F Q/D Recirculation from pump case through strainer and orifice to seal To pump suction V ■ API PLAN 13 ■ Recirculation from seal chamber through orifice and back to pump suction ■ API PLAN 21 ■ V Recirculation from pump case through orifice and heat exchanger to seal T 1 19 F Q/D

API 610 PIPING PLAN DRAWING Technical Data ■ API PLAN 22 ■ Q/D F V T 1 Recirculation from pump case through strainer, orifice and heat exchanger to seal T 1 ■ API PLAN 23 ■ FO FI Q/D Recirculation from seal with pumping ring through heat exchanger and back to seal From pump discharge To pump suction ■ API PLAN 31 ■ Recirculation from pump case through cyclone separator delivering clean fluid to seal and fluid with solids back to pump suction 20 V F Q/D

API 610 PIPING PLAN DRAWING By vendor ■ API PLAN 32 ■ Injection to seal from external source of clean fluid Technical Data From external source By purchaser F V P 1 T 1 From pump discharge ■ API PLAN 41 ■ To pump suction Recirculation from pump case through cyclone separator delivering clean fluid through heat exchanger to seal and fluid with solids back to pump suction Q/D V F T 1 Vent ■ API PLAN 51 ■ Q/D Reservoir Dead-ended blanket typically used with auxiliary sealing device V Q 1 Q 0 (plug) 21 F Q/D

API 610 PIPING PLAN DRAWING Technical Data When specified Vent P 1 PS ■ API PLAN 52 ■ F 1 Non-pressurized external fluid reservoir with forced circulation (typically used with dual seal arrangement 2) Vent Normally open Reservoir F Reservoir BO BI ■ API PLAN 53 ■ When specified External pressure source P 1 PS To external pressure source Reservoir Normally open Pressurized external fluid reservoir with forced circulation (typically used with dual seal arrangement 3) F 1 F BI BO Reservoir BO BI External source F ■ API PLAN 54 ■ Circulation of clean fluid from external system (typically used with dual seal arrangement 3) BO BI 22 BI BO

API 610 PIPING PLAN DRAWING Technical Data V F Q/D ■ API PLAN 61 ■ Tapped connections provided for purchaser’s use (typically used to provide fluid such as steam, gas, or water to an auxiliary sealing device) Plugged inlet Plugged outlet ■ API PLAN 62 ■ External fluid quench (steam, gas, water, etc, . ) typically used with throttle bushing < API PLAN LEGEND > < SYMBOLS FOR CHAMBER > BI BO C D F H Q I O Heat exchanger : Barrier / Buffer Fluid In : Barrier / Buffer Fluid Out : Cooling : Drain : Flush : Heating : Quenching : In : Out P 1 Pressure gage with block valve Flow-regulating valve T 1 Dial thermometer Block valve PS Pressure switch with block valve Check valve F 1 Flow indicator Cyclone separator 23 Y-type strainer Orifice Q/D

Typical Mechanical Seal Arrangements Technical Data SINGLE SEAL TANDEM SEALS ( Unpressurized Dual Seal ) Connection “F” (see Note 2) Connection “Q”, ”V”, ”D” (see Note 2) Casing Cover Throttle Bushing Connection “F” (see Note 2) Seal cover (gland) Pumping Ring (for forced circulation) Shaft Sleeve Rotating seal member Stationary seal member Connection “B” (see Note 2) Throttle bushing or auxiliary sealing device Rotating seal member Stationary seal member DOUBLE SEALS ( Pressurized Dual Seal ) Connection “B” (see Note 2) Connection “Q”, ”V”, ”D” (see Note 2) Throttle bushing or auxiliary sealing device Rotating seal member Stationary seal member <Notes> 24 1. The illustrations are typical and do not represent any specific design or brand of seal. 2. Refer to appropriate piping plan for required connections.