Integrated expander generator for hydrogen applications with magnetic bearings.
The expander generator system with magnetic bearings cooled by hydrogen flow addresses safety risks and operational inefficiencies by using hydrogen to cool bearings and generate electrical energy, eliminating the need for sealing gases and lubricants.
JP7868183B2Active Publication Date: 2026-06-01NUOVO PIGNONE TECH SRL
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NUOVO PIGNONE TECH SRL
- Filing Date
- 2023-05-18
- Publication Date
- 2026-06-01
Smart Images
Figure 0007868183000001 
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Figure 0007868183000003
Abstract
A hydrogen-expansion generator machine (100) for hydrogen use has a machine inlet (111) and a machine outlet (112), and includes an impeller (110) that expands hydrogen and is directly connected to a generator (120), and at least one magnetic bearing (130) that is cooled by a hydrogen flow taken in from the machine inlet (111). The expander generator machine (100) is located inside a casing (140), and preferably, hydrogen flows through an appropriate path inside the casing (140) to cool at least one magnetic bearing (130). Advantageously, the generator (120) is also cooled by the hydrogen flow taken in from the machine inlet (111).
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