COPMPRESSION UNIT FOR HIGH AND LOW PRESSURE SERVICES

• US 20170356451A1
• Filed: 11/30/2015
• Published: 12/14/2017
• Est. Priority Date: 12/16/2014
• Status: Abandoned Application

• Current Assignee: Nuovo Pignone Tecnologie SRL (Baker Hughes Company)
• Original Assignee: Nuovo Pignone SRL (Baker Hughes Company)
• Inventors: BRESCIANI, Stefano, SASSOLINI, Lorenza, BANCHI, Nicola
• Application Number:
  US15/535,172
• Publication Number:
  US 20170356451A1
• Time in Patent Office: Days
• CPC Class Codes: F04D 17/12 Multi-stage pumps
• CPC Class Codes: F04D 25/02 Units comprising pumps and their driving means
• CPC Class Codes: F04D 25/163 driven by a common gearing arrangement
• CPC Class Codes: F25J 2230/20 Integrated compressor and process expander; Gear box arrangement; Multiple compressors on a common shaft
• CPC Class Codes: F25J 3/04018 of main feed air
• CPC Class Codes: F25J 3/04024 of purified feed air, so-called boosted air
• CPC Class Codes: F25J 3/04109 Arrangements of compressors and /or their drivers using work extraction by mechanical coupling of compression and cold expansion F25J3/04381
• CPC Class Codes: F25J 3/04145 Mechanically coupling of different compressors of the air fractionation process to the same driver(s)
• CPC Class Codes: F25J 3/04175 at a pressure of substantially more than the highest pressure column

Abstract

A compression unit for supplying high and low pressure services to a plant including a single driver associated with two driver shaft-ends projecting apart from the driver, a first driver shaft end and a second driver shaft end, a first unit being operatively connected to the first driver shaft-end and a second unit being operatively connected to the second driver shaft-end.

Claims

1. A compression unit for supplying high and low pressure services to a plant, the compression unit comprising:

a single driver associated with two driver shaft-ends projecting apart from the driver;

a first driver shaft end and a second driver shaft end; and

a first unit being directly operatively connected to the first driver shaft-end and a second unit being operatively connected to the second driver shaft-end,

wherein the first unit is an overhung impeller, and the second unit is an integrally geared-compressor arrangement comprising a bull gear and a plurality of pinions engaged with the bull gear, wherein the diameter of bull gear is larger than the diameter of pinions.

2. The compression unit according to claim 1, wherein the overhung impeller of the first unit is an impeller connected to the first driver shaft-end by a gear arrangement.

3. The compression unit according to claim 1, wherein the bull gear is connected by a flanged connection to the second driver shaft-end.

4. The compression unit according to claim 1, wherein the integrally geared-compressor arrangement comprises at least one driven shaft.

5. The compression unit according to claim 4, wherein at the opposite ends of the at least one driven shaft are provided overhung impellers.

6. The compression unit according to claim 4, wherein the bull gear comprises two driven shafts, a first driven shaft and a second driven shaft, each of the first and second driven shaft being provided at its ends with a couple of overhung impellers, respectively first overhung impellers and second overhung impellers.

7. The compression unit according to claim 1, wherein the first overhung impellers and the second overhung impellers are fluidly connected thus forming a first multi stage compression unit.

8. The compression unit according to claim 1, wherein an outlet of the first unit is fluidly connected to an inlet of the second unit, forming a second multi stage compression unit.

9. The compression unit according to claim 1, wherein the inlet of the first unit is fluidly connected to the outlet of the second unit, forming a third multi stage compression unit.

10. The compression unit according to claim 1, wherein the driver shaft-ends are the ends of a single driver shaft.

11. The compression unit according to claim 1, wherein the two driven shafts are configured to rotate at different rotary speeds.