Goulds Process Pumps designed for severe corrosive services

Transcription

1 Process Pumps designed for severe corrosive services

2 Non-metallic vertical sump and process pumps designed for severe corrosive services Capacities to 5000 GPM (11 m3/hr) Heads to 275 feet (85m) Design features Fiberglass Reinforced Vinyl Ester Resin Continuous Strand construction provides exceptional strength Replaceable lower pump sleeve bearing is extra long to reduce unit surface loading Semi-Open Impeller utilizing pump-out vanes External Impeller Adjustment Services Chemical/ Petrochemical: Waste acid, hydrochloric acid, Sodium hydroxide; Ferric chloride, Sulfuric acid Utility: Coal pile runoff, Sea Water, Demineralized water General: Industrial process: Deionized water, Pollution control, Sump services 2 2

3 Designed for Optimum Bearing Life Thrust Bearing Not only is the grease-lubricated ball bearing designed to handle the axial thrust load generated by the pump impeller, but it is also easily replaceable without removing the pump. Axially Split Sleeve Bearings Teflon and carbon-filled polyphenylene sulfide bearings are held in place by an externally mounted split fiberglass bearing holder. They can be replaced without dismantling the entire pump (including the shaft). The bearing holders are drilled to provide necessary flush liquid to the grooved bearings. Sleeve bearings are mounted at a maximum spacing of 30 inches (762 mm) to ensure that the pump operates well below its first critical speed. Lower Sleeve Bearing The Teflon and carbon-filled polyphenylene sulfide sleeve bearing carries the greatest amount of radial load in the pump. The bearing, grooved to ensure generous lubrication, is locked into position in the pump cover by a fiberglass key and a polypropylene snap ring. It is longer than the upper bearings for increased surface area. The resulting lower unit loading substantially improves bearing life. Pump Column The Goulds Model 4550 features a large diameter column which, because of its moment of inertia, stiffens the entire pump assembly and reduces deflection loads on the column bearings. Another aspect of the column s unique design is the location of the sleeve bearing holes in the column. They are positioned so that in the event of shaft wear, the column can be inverted end-for-end to allow the bearings to run on unworn surfaces of the existing shaft, thereby extending the useful life of the shaft and reducing costly downtime. Bearings and holders are split to permit inspection without pump (including the shaft) disassembly Bearings are easily removed from the fiberglass bearing holders Dual Volute Another important distinction is the use of dual volute casings. Radial thrust from the pump impeller, which can highly load the lower bearing, is greatly reduced by this feature. Double volute casings are used in 11 of Model 4550 s larger pump sizes where, typically, radial thrust loads are higher. 3

4 Available Options Replaceable Shaft Sleeves Goulds Model 4550 Vertical Pumps can be furnished with replaceable shaft sleeves under the lower sleeve bearing. This feature allows replacement of the sleeve, rather than the entire shaft, in the event of excessive wear. Mounting Plates Mounting plates with special dimensions, such as to match an existing pump, are readily available. Fiberglass pit covers, designed to mount one or more pumps, plus provision for level controls, are also available. Tailpipes Tailpipes are a frequently utilized option, which serve to increase the effective length of the pump, with minimum additional cost. Typically used in a demand-type sump, level controls are arranged to start the pump when the liquid covers the top of the pump casing, and to stop the pump when the liquid nears the bottom of the tailpipe. (1) SUBMERGENCE IN. (m) 30 (.8) (.6) (.4) 10 (.2) 0 SCALE CHANGE Operating Submergence Start-up Tailpipe (0) (500 (0) (1500) (00) (3000) (00) Suction Strainer Basket CAPACITY GPM (m 3 /hr) Bearing Lubrication Methods External Flush Line shaft bearings/lower sleeve bearing should be lubricated with a continuous source of clean liquid at a rate of 1 /4 to 1 /2 GPM (0.95 to 1.9 l/min) per bearing at 10- PSI (69.0 to kpa). A connection for external flush leading to the flush tubing to all bearings is provided above the mounting plate. Internal Cover Flush Bypass Flush For the line shaft bearings/lower sleeve bearings, flush liquid can be supplied from the pump discharge if the discharge pressure is sufficient. The flush tubing would be connected to the discharge pipe to provide the lubricating and cooling. Process fluid must be clean and free of solids. Optional, additional bearing lubrication methods (for example, piping systems utilizing cyclone separators) are also available depending on the specific application. For the lower sleeve bearing, the pump cover can be drilled for flush liquid supply. The process fluid must be clean and free of solids. This applies for short setting pumps only, with a maximum pump length of 36 inches (914.4 mm). 4

5 Level Controls Goulds Pumps can provide a number of different systems to control pump operation as the liquid level varies. Two typical systems are described on this page. The number of components required by each is determined by the type of operation and number of pumps being controlled. Displacer Type (Fig. 1) Displacer type level control is furnished with porcelain displacers connected to a flange-mounted switch by alloy wire and cable clamps. The wire and clamps are selected to suit the specific application and are normally 316SS, Alloy, Hastelloy-C or Monel. To prevent swirling liquid in the sump from improperly activating the switch, the displacers are frequently mounted inside a fiberglass stilling tube. Probe Type (Fig. 2) Probe type level control uses either solid rod or adjustable wire suspension electrodes, one for each actuation level. The circuit from an electrode to an external relay is made or broken when the liquid level touches or loses contact with that electrode. Electrodes are attached to a flange-mounted holder which in turn is mounted on either a pit cover or pump mounting plate. Fig. 1 Starters/Control Panels When desired, Goulds can supply customized control panels in a variety of enclosures containing starters, alternators, relays, alarms or any other components needed to complete the pump control system. Fig. 2 Optional Fiberglass Wrapped Shaft 1 2 Goulds Model 4550 vertical sump pumps are generally offered with the following shaft materials of construction: 316SS, Alloy-, Titanium, Hastelloy-C, and additional alloys upon special request from the factory. For highly corrosive applications/services typically requiring higher alloy metal shafting (for example, Titanium, Hastelloy-C, etc.), Goulds offers an optional shaft material specifically designed to be a more cost effective and corrosion-resistant alternative. This option, a fiberglass-wrapped 303SS shaft, is available on all Goulds Model 4550 Group I, Group II and Group III short setting pumps with a maximum pump length/l Dimension of 36 inches (914.4 mm). The wrapped shaft is designed to provide the same corrosion resistance as other FRP components (such as casing, cover, impeller, etc.) that constitute the 4550 pump. 1. Typical Model 4550 Group I fiberglass-wrapped shaft pump offered with a maximum pump length/l Dimension of 36 inches (914.4 mm). An FRP strainer is available as an option. 2. Cross-section of a fiberglass-wrapped 303SS shaft. The cross-section shows the core, non-wetted, 303SS shaft and is meant to highlight the shaft s substantial fiberglassreinforced wrapping, greater than 1/8 (3.2mm) 3. Typical fiberglass-wrapped 303SS shaft. The shaft is available with either a Titanium or Hastelloy-C Journal Sleeve for the lower sleeve bearing located in the pump cover. 3 5

6 HEAVY-DUTY BEARING PEDESTAL Cast iron construction rigidly supports the pump column, thrust bearing and motor, and is protected from external corrosion by a polyester thermoset powder coating. SLEEVE BEARING FLUSH LINES Arranged to simplify field connection of external flush liquid. When the process liquid is free of solids, flush lines can be connected to the pump discharge for lubrication. In addition, short setting pumps can be configured with an internal cover flush to supply lubrication to the lower sleeve bearing. FIBERGLASS MOUNTING PLATE Heavy duty fiberglass of appropriate thickness and size to support the pump and motor. Mounting plates are available in both standard and custom configurations. LARGE DIAMETER COLUMN Fitted with heavy duty Class 150 flanges on each end, column stiffens the pump assembly to extend bearing life. The column can be inverted endfor-end thereby offsetting existing bearing ports and extending shaft life. PRECISION-GROUND SHAFT Shaft and all wetted bolting are selected to suit specific applications and are typically 316SS, Alloy-, Titanium or Hastelloy-C. FIBERGLASS CONSTRUCTION For all wetted parts, except shaft and bolting, in either vinyl ester or epoxy resins. Provides tough corrosion resistance for a wide range of difficult liquids. FIBERGLASS BASKET STRAINER Attached to the casing by fiberglass studs and nuts, strainer protects the pump casing and impeller against damage from trash or other debris. 6

7 EXTERNAL IMPELLER ADJUSTMENT Allows field setting of impeller-to-casing operating clearance from above the mounting plate. THRUST BEARING Easily replaceable and carries the entire axial thrust load from pump impeller, allowing use of flexible couplings and standard, off-the-shelf motors. VAPOR SEAL Protects thrust bearing from corrosive sump vapors. SPLIT BEARING HOLDERS Align the bearings with the pump column. Molded in fiberglass, the holders are drilled to supply flush to the bearings. AXIALLY-SPLIT BEARINGS Made of Teflon and carbonfilled PPS, are grooved to ensure even lubricant dispersion. Easily replaceable while the pump (including the shaft) remains completely assembled. Model 4550 REPLACEABLE LOWER PUMP SLEEVE BEARING Extra-long to reduce unit surface loading, lower sleeve bearing is grooved PPS like the upper sleeve bearings and is secured in the cover by a key and snap ring. PUMP COVER Drilled for flush liquid supply to the lower bearing. A fully-confined Viton O-ring (optional elastomers available) seals the cover to the casing. Mode SEMI-OPEN IMPELLER Utilizes rear pump-out vanes and balance holes to reduce the load on the axial thrust bearing. 7

8 Hydraulic Coverage Charts TOTAL HEAD IN FEET (m) 1150 RPM (60 Hz) (35) (30) (25) () (15) (10) (5) (2) x3-13 1x2-10 1x1 1 /2-8 1x1 1 / /2x3-10 2x3-10 3x /2x3-8 2x3-8 3x /2x3-6 2x3-6 3x4-13 4x4-10 4x6-13 4x6-10 6x8-13 8x x (1) (2) (3) (5) (10) (15) () (30) () (60) (80) () (150) (0) (300) (500) (700) (0) (1500) CAPACITY GPM (m 3 /hr) 1150 RPM (60 Hz) CAPACITY GPM (m 3 /hr) 1450 RPM (50 Hz) (1) (2) (4) (6) (10) (15) () (30) (50) () (150) (0) (300) (500) (700)(0) TOTAL HEAD IN FEET (m) 1750 RPM (60 Hz) (70) (60) (50) () (30) (25) () (15) (10) (5) x3-13 1x2-10 1x1 1 /2-8 1x1 1 / /2x /2x /2x3-6 2x3-6 2x3-10 2x3-8 3x4-8 3x4-10 3x4-13 4x4-10 8x x6-13 6x8-13 4x6-10 (50) () (30) (25) () (15) (10) (8) (6) (4) (3) TOTAL HEAD IN FEET (m) 1450 RPM (50 Hz) (2) (1) (2) (3) (5) (10) (15) () (30) () (60) (80) () (150) (0) (300) (500) (700) (0) (1500) CAPACITY GPM (m 3 /hr) 1750 RPM (60 Hz) CAPACITY GPM (m 3 /hr) 2900 RPM (50 Hz) (0) (1) (2) (3) (5) (7) (10) (15) () (30) (50) (70) () (150) (0) (300) TOTAL HEAD IN FEET (m) 3500 RPM (60 Hz) (150) (1) () (80) (60) (50) () (30) (25) () (15) (10) (8) 500 () 0 (80) 1 1 /2x (60) (50) 1x () 1x1 1 / /2x3-8 2x3-8 3x x4-10 (30) (25) 1x1 1 / /2x3-6 2x3-10 3x4-8 () 80 (15) 60 2x3-6 (12) 50 (10) (8) 30 (6) (4) TOTAL HEAD IN FEET (m) 2900 RPM (50 Hz) (1) (2) (3) (5) (10) (15) () (30) () (60) (80) () (150) (0) (300) CAPACITY GPM (m 3 /hr) 3500 RPM (60 Hz) 8

9 Sectional View A A Z B H W 412Z A 197B A 371H Materials of Construction Goulds Part No. Part Name Material Casing Fiberglass Reinforced Vinyl Ester 101 Impeller Fiberglass Reinforced Vinyl Ester 108 Adapter Cast Iron 112 Thrust Bearing Steel 122 Shaft 316SS 123 Flinger Buna N 126 Journal Sleeve (Optional) not shown 316SS 180 Pump Cover Fiberglass Reinforced Vinyl Ester 181 Strainer Fiberglass Reinforced Vinyl Ester 189 Mounting Plate Fiberglass Reinforced Vinyl Ester 190 Flush Tubing Polypropylene 192 Column Pipe Fiberglass Reinforced Vinyl Ester 195 Discharge Pipe Fiberglass Reinforced Vinyl Ester 197B Radial Bearing, Split Carbon/Teflon PPS 213 Bearing Holder, Split Fiberglass Reinforced Vinyl Ester 215A Vapor Seal Teflon Goulds Part No. Part Name Material 2 Motor Support Steel 242 Pipe Collar Polypropylene 283A Adjusting Nut Steel 317W Stud and Nut, Column to Cover Fiberglass Reinforced Vinyl Ester 3 Motor Adapter Steel 351A Gasket Viton 361H Snap Ring Polypropylene 370 Bolt, Casing to Cover 316SS 370C Hex Bolt, Bearing Housing 303SS 371Z Hex Bolt, Column to Plate 316SS 372A Bolt, Strainer to Casing Fiberglass Reinforced Vinyl Ester 372B Stud and Nut Assembly Fiberglass Reinforced Vinyl Ester 412Z O-ring Pump Cover Viton 496 Snap-Ring Steel 849 Lower Bearing Assembly Carbon/Teflon PPS 9

10 Construction Details Details All dimensions in inches and (mm) unless otherwise specified. Pump Size 1 x x x x x x x x x x x x x x x x x x x Maximum Sphere Size / Impeller Maximum Sphere Size / Strainer (9.53) (12.70) (12.70) (7.95) (7.95) (15.90) (25.) (4.78) (9.53) (9.53) (15.90) (19.05) (25.) (7.95) (12.70) (25.) (28.60) (44.45) (35.00) (9.53) (11.11) (11.11) (9.53) (11.11) (11.11) (12.70) (11.11) (11.11) (11.11) (12.70) (12.70) (15.90) (11.11) (12.70) (15.90) (25.) (25.) (25.) CASING SHAFT AND BEARING DATA Impeller Front (0.38) 0.0 (0.51) (0.64) Clearance Back (1.14) 0.0 (1.02) (0.89) Casing Thickness (min) (12.70) (19.05) (15.90) (19.05) (15.90) (28.60) (19.05) (31.75) (35.00) Volute Single Double Single Double Single Double Diameter at Impeller (19.05) (31.75) (38.10) Diameter at Sleeve Bearings (28.60) (38.10) (44.45) (57.15) Diameter at Coupling (22.22) (28.60) (35.00) (60.32) Maximum Bearing Span (762.00) Thrust Bearing Number 307SZZ 309SZZ 530MZ 5311MZ Thrust Bearing Lubrication Sealed, Greased-for-life Regreasable 1st Critical Speed 5625 RPM 7560 RPM 8830 RPM RPM Maximum Shaft 0.9 HP 1.1 HP 2.3 HP 4.0 HP 12.0 HP Horsepower per (0.67 kw) (0.82 kw) (1.72 kw) (2.98 kw) (8.95 kw) RPM Also available as a horizontal process pump that meets ASME/ANSI B73.1. The 4150 shown here features the nonmetallic polymer concrete Chembase TM that greatly reduces installation time and cost. Information on both the model 4150 and the 4550 can be obtained from your local ITT/Goulds Pumps representative. 10

11 C NPT Male Flush Connection A Discharge Flange 150 lb. Flat Face *X J K D B F H N T L Dim. M Dia. Holes G E Tailpipe As Specified (optional) S Dimensions All Dimensions are in inches and (mm). Pump Size 1 x x x x x x x x x x x x x x x x x x x A B (51) (76) (51) (76) (102) (51) (76) (102) (152) (3) (254) 10 1 / / /4 (257) (305) (316) (0) C 1 /4 3 /8 D E F G H J K M N S T 5 5 / / /2 8 1 /4 (143) (152) (165) (3) (216) (210) (610) (762) (864) (762) (864) (914) (1067) (914) (864) (1067) (1321) (1676) (83) (381) (508) (610) (813) (762) (813) (914) (1067) (1219) (559) (711) (813) (711) (813) (864) (991) (838) (9) (991) (1245) (1575) (1981) (330) (457) (559) (737) (686) (737) (838) (965) (1118) 4 1 / /2 5 1 / /2 5 1 / /2 5 1 / /2 8 1 /2 11 (105) (127) (114) (1) (127) (114) (1) (152) (191) (1) (178) (191) (216) (279) 18 3 / / / / / / / / / / /4 (467) (594) (619) (686) (594) (619) (686) (768) (838) (714) (768) (838) (1086) (1384) (1822) 3 /4 1 (19) (25) 10 1 / / / /4 1 / / / / /2 (257) (362) (438) (565) (521) (565) (705) (826) (3) 3 1 /8 4 1 /2 3 1 /8 4 1 / / / / (79) (114) (79) (114) (127) (114) (127) (171) (178) (114) (127) (178) (254) (356) 5 / /2 2 (16) (25) (38) (51) 11