Title:
METHOD OF MONITORING PUMPING LIMIT OF MULTISTAGE TURBOCOMPRESSOR WITH INTERMEDIATE COOLING
Document Type and Number:
Japanese Patent JP2740429
Kind Code:
B2
Abstract:
PURPOSE: To provide a method for monitoring a pump limit of a multistage turbocompressor with intermediate cooling, which takes into consideration the influence of gas temperatures at inlet sides of various stages on the pump limit.
CONSTITUTION: For the purpose of monitoring a pump limit, a control unit 1 with a data memory, for acting on a check valve 2 of a discharge duct 3 at the outlet side is provided. The check valve is opened by the control unit when the pump limit is approached. The check valve may also be arranged in a circulating conduit. A measuring device for measuring the pressure P1 at the inlet side, the pressure P2 at the outlet side and the gas flow in a compressor is provided, and a device for measuring the intake gas temperature TS at the inlet of a first stage and the re-cooling temperature Tr1 is arranged. The re-cooling temperature means the temperature of the gas flow downstream of a heat exchanger 4 for re-cooling. The measured values of temperatures at various stages are supplied to the control unit 1.
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Inventors:
Ioan, Ispas
Ulrich, Grundmann
Ivan, Van, Hof
Ulrich, Grundmann
Ivan, Van, Hof
Application Number:
JP25960992A
Publication Date:
April 15, 1998
Filing Date:
September 29, 1992
Export Citation:
Assignee:
Atlas, Copco, Energus, Gezelshaft, Mitt, Beschlenktel, Haftung
International Classes:
F04B49/10; F04B45/00; F04D27/02; (IPC1-7): F04B49/10
Domestic Patent References:
| JP62195492A |
Attorney, Agent or Firm:
Tajiro Taiji