Heavy Duty Balanced Opposed Compressors - Ariel Corporation

More documents

Recommendations

Info

Section 4 Part Replacement For Models: JGH:E:K:T “3RWS” Oil Wiper Set The three cast iron rings in this set are radially cut and doweled to stagger the cuts from one ring to the other. They keep crankcase oil out of the packing and cylinder. Assemble with the blank face towards the oil (crankcase) and the slotted side towards the pressure packing. Total end gap installed is 3/16 to 7/32 in. (4.8 to 5.6 mm). Maintain end gap by adjusting ring gap or replacing the ring. Arrangement of Piston Rod Packing Rings <strong>Ariel</strong> supplies JGH:E:K:T packings in five pressure ranges. The figure to the right shows the general arrangement of the oil supply, seal ring, and vent locations. The type of rings used depends on the pressure application. A separate diaphragm in the crosshead guide carries the oil wiper rings and one seal ring set. Piston Rod Packing Ring Material FIGURE 4-27 “3RWS” Wiper Set PAGE 4-22 3/11 Pressure Side Pressure Breaker Ring, if applicable Three to Five Seal Ring Sets with Oil Supply Some years ago, bronze was the standard material for all <strong>Ariel</strong> packings. Bronze, however, is totally unsatisfactory for sour gas service, (hydrogen sulfide in the gas). PEEK, cast iron and Teflon provide outstanding service with sour gas, and since they perform equally well with sweet gas, they are now standard materials. A typical packing consists of a PEEK pressure breaker, Teflon/cast iron single-acting rings, all Teflon double-acting rings, and a cast iron wiper set. The Teflon is glass-reinforced and impregnated with molybdenum disulfide to provide a strong, slick material to reduce friction and wear. Primary Vent Seal Ring Set Crankcase Side
For Models: JGH:E:K:T Section 4 Part Replacement Water-Cooled Piston Rod Packing When any disassembly of (optional) “water”-cooled rod packing cases is required from the as supplied - as received condition from the manufacturer, proper re-assembly and leak testing is required. Reassembly See “Piston Rod Packing Reassembly” on page 4-17 and “Types of Piston Rod Packing Rings” on page 4-19. Refer to the pressure packing assembly in the parts book supplied with your unit. Contact your distributor if you do not have a parts book. A pressure packing assembly drawing also comes with each pressure packing re-build kit. Water-cooled cases are lapped. Take special care not to scratch cup mating surfaces; it can cause significant problems. Cup surfaces must be clean and dry for re-assembly. The cups are numbered on the outside diameter; assemble them in consecutive order, starting with the end cup. See the pressure packing assembly in your parts book and Fig. 4-28 The studs are offset so the cups fit only one way. Coolant Turnaround Cup Circumferential Identification Groove (All - beginning in 2006) O-Ring Groove FIGURE 4-28 Water-Cooled Packing Case Turnaround Cups Verify the tie studs thread completely into the end cup. Put the proper ring in the groove and face it in the proper direction. Three long tie studs hold the pressure packing together. The stud holes are not equally spaced. This prevents misalignment of the stack of parts. When sliding parts onto the tie studs, take care not to scratch the lapped faces. Unless non-lube, coat rings liberally with clean lubricant before reassembly. Use only the same lubricant used in the force feed lube system. Next, install the second cup, position the rings, and verify the two small O-rings are in place around the coolant holes. Repeat this step to assemble the remaining parts consecutively in the configuration detailed in the packing case drawing. Install tie stud nuts and tighten to the values in Table A-3 in Appendix A. Manually verify all rings move freely, radially, in their grooves. Side-loaded WAT and AL rings are snug, but should still move manually. Center these rings. Testing All internal passages must function with 100% verification. To check passages, blow dry compressed air through the connection taps on the flange and verify that air exits at the proper holes. Air applied to the connection tap stamped “Coolant In” should exit the connection tap stamped “Coolant Out”; or air applied to the tap stamped “Lube” should exit at the appropriate cup on the inside diameter of the case. Pressure leak test packing cases as follows: 1. Apply 60 to 100 psi (4 to 7 bar) dry, compressed air to the “Coolant In” connection; it should exit at connection tap “Coolant Out”. For water-cooled rod packing cases in non-lube service, use oilfree compressed air. Air applied to the tap stamped “Lube” should exit at the appropriate cup on the inside diameter of the case. 2. Plug the “Coolant Out” connection and apply 60 to 100 psi (4 to 7 bar) dry, compressed air to the “Coolant In” connection through a ball valve with a calibrated pressure gauge located between the ball valve and packing case. Close the ball valve and disconnect the air supply. Pressure should not drop for five minutes, minimum. Disassemble, inspect, repair, re-assemble, and retest any cases that fail this test. Packing cases may be bolted into place in a cylinder head to aid sealing, with proper bolting and torques. 3/11 PAGE 4-23
Page 1:
Maintenance and Repair Manual For J
Page 4 and 5:
For Models: JGE:H:K:T Oil Strainer.
Page 6 and 7:
For Models: JGE:H:K:T SECTION 5 - S
Page 8 and 9:
For Models: JGH:E:K:T FIGURE 4-23
Page 10 and 11:
For Models: JGH:E:K:T General Safet
Page 12 and 13:
For Models: JGH:E:K:T Ariel Contact
Page 14 and 15:
Section 1 - Tools For Models: JGH:E
Page 16 and 17:
Section 1 - Tools For Models: JGH:E
Page 18 and 19:
Section 2 - Instrumentation For Mod
Page 20 and 21:
Page 22 and 23:
Page 24 and 25:
Page 26 and 27:
Page 28 and 29: Section 2 - Instrumentation For Mod
Page 30 and 31: Section 2 - Instrumentation For Mod
Page 32 and 33: Section 3 - Maintenance For Models:
Page 58 and 59: Section 4 Part Replacement For Mode
Page 102 and 103: Section 5 - Start Up For Models: JG
Page 112 and 113: Section 6 - Troubleshooting For Mod
Page 114 and 115: Section 6 - Troubleshooting For Mod
Page 116 and 117: Appendix A Ariel Fasteners and Torq
Page 122 and 123: Appendix B - Clearances For Models:
Page 128 and 129:
Appendix C - Frame Specifications F
Page 130 and 131:
Appendix C - Frame Specifications F
Page 132:
Appendix D Compressor Clearance, Oi
show all

Heavy Duty Balanced Opposed Compressors - Ariel Corporation

Create successful ePaper yourself

Delete template?

Save as template?