Integrated exhaust system for fuel cell power plants

By designing an integrated exhaust device, combined with a mesh-type water distribution pipe and a noise-reducing support pipe, efficient gas-water separation and noise reduction of the exhaust gas from the fuel cell power station are achieved. This solves the problem of low integration in existing devices and ensures stable operation and convenient maintenance of the device.

CN122246180APending Publication Date: 2026-06-19ZHEJIANG TIANNENG HYDROGEN ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG TIANNENG HYDROGEN ENERGY TECH CO LTD
Filing Date
2026-03-30
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing fuel cell power plant exhaust devices have low integration, which cannot effectively achieve gas-water separation, noise reduction and stable exhaust. They are prone to water accumulation and blockage and noise reduction efficiency decay, and cannot meet the requirements for long-term stable operation.

Method used

An integrated tailpipe device is designed, which combines a mesh-type water distribution pipe and a sound-absorbing support pipe to achieve integrated air-water separation and noise reduction. Through the combination of multi-stage baffles and sound-absorbing sections, the device utilizes the density difference between air and water and sound-absorbing materials to achieve efficient separation and noise reduction. The modular and detachable structure facilitates maintenance.

Benefits of technology

It achieves the integration of gas-water separation and noise reduction throughout the entire process, effectively preventing water accumulation and blockage, ensuring stable exhaust, reducing noise, and facilitating maintenance and component replacement.

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Abstract

This invention discloses an integrated exhaust device for fuel cell power plants. By integrating the front-end gas-water separation chamber (a mesh-type water distribution pipe and a first and second support baffle) and the rear-end silencing chamber (silencing section and sound-absorbing material) into the same exhaust cavity, a fully integrated "water separation-flow guidance-silencing-exhaust" process is achieved. The front-end mesh-type water distribution pipe utilizes inertia and centrifugal force to achieve efficient gas-water separation. The remaining gas impacts the first support baffle for secondary gas-water separation, and finally, the front end of the mesh-type silencing support pipe performs a third gas-water separation. The modular and detachable structure facilitates maintenance and replacement.
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