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A turboexpander-generator unit and a method for producing electric power

A turboexpander and generator technology, which is applied to engine components, engine lubrication, machine/engine, etc., can solve the problems of complicated turboexpander-generator assembly, complex machine parts of active magnetic bearing, etc., and achieve easy maintenance. Effect

Active Publication Date: 2017-12-05
NUOVO PIGNONE TECH SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, active magnetic bearings are complex machine components which additionally require electronic control via a dedicated electronic control unit
Requires complex wiring to connect the control unit to the magnetic bearings, which further complicates turboexpander-generator assembly

Method used

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  • A turboexpander-generator unit and a method for producing electric power
  • A turboexpander-generator unit and a method for producing electric power

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Embodiment Construction

[0028] The following detailed description of the exemplary embodiments refers to the accompanying drawings. The same reference numbers in different drawings identify the same or similar elements. Additionally, the drawings are not necessarily drawn to scale. Also, the following detailed description does not limit the invention. Instead, the scope of the invention is defined by the appended claims.

[0029] Reference throughout this specification to "one embodiment," "an embodiment," or "some embodiments" means that a particular feature, structure, or characteristic described with respect to the embodiments is included in at least one embodiment of the disclosed subject matter. Thus, appearances of the phrase "in one embodiment" or "in an embodiment" or "in some embodiments" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitabl...

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Abstract

A turboexpander-generator unit (1) is described. The unit comprises a casing (3) with a gas inlet (5) and a gas outlet (7). The unit further comprises a turboexpander (9) having a turboexpander rotor (21) mounted on a shaft (13) supported for rotation in the casing (3), and an electric generator (11) arranged in the casing (3) and comprised of a generator stator (1 IS) and a generator rotor (11R) mounted on the shaft (13), for co-rotation with the turboexpander rotor (21). The unit also comprises a plurality of bearings (15, 17, 19) configured and arranged for rotatingly supporting the shaft (13) in the casing (3). A gas flow path from the gas inlet (5) to the gas outlet (7) is provide, which extends through the turboexpander (9) and the electric generator (11). Compressed working gas expands in the turboexpander and generates mechanical power for rotating the generator rotor. The expanded working gas from the turboexpander flow through the electric generator and removes heat therefrom. The bearings comprise gas- lubricated bearings, lubricated with the working gas.

Description

technical field [0001] The present invention relates to an integral expander generator, i.e. a turboexpander-generator unit, which generally includes an expander containing compressed gas and generating mechanical power from the expansion of the gas, the expander being mechanically coupled to a generator for converting capable The mechanical power obtained on the shaft of the expander is converted into electricity. Background technique [0002] A turboexpander-generator unit is a commonly employed machine for converting the power contained in a compressed gas stream into useful mechanical power available on the output shaft of the turboexpander. The output shaft may be used to mechanically drive a rotating machine, such as a generator. An integrated turboexpander-generator unit typically includes an airtight housing housing a turboexpander having a rotating wheel or wheels provided with blades and mounted on a rotating shaft. The shaft is supported for rotation in the hous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D15/10F01D25/22H02K7/18
CPCF01D15/10F01D25/22H02K7/1823F02C7/06F05D2240/53F01D25/12F01D25/16F05D2240/12H02K7/083H02K9/00
Inventor M.达拉拉M.伯蒂S.吉亚彻蒂F.弗罗林多M.卡坦扎罗
Owner NUOVO PIGNONE TECH SRL
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