External Actuator Mechanism for Compressor Diffuser Vane Modulation
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Solution Overview
Problem
Existing compressor diffuser mechanisms are space-consuming, complex to assemble, and burdensome to maintain due to the need for actuators within the compressor, limiting their application to high-efficiency and compact compressors.
Innovation Solution
A mechanism that modulates diffuser vane angles using a radial power transmission system with a shroud, cam, driving wheel, sliding blocks, and a driving cable, allowing the actuator to be installed outside the compressor, eliminating the need for internal actuator space and simplifying assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the actuator is disposed inside the compressor to modulate diffuser vanes, then the diffuser vane modulation function is achieved, but the space requirement and assembly complexity increase
Solution Approach 1:
The actuator is extracted from the compressor interior and repositioned to the exterior. The driving shaft extends through the compressor wall to connect the external actuator with the internal diffuser vanes, allowing the actuator to be removed from the confined space inside the compressor while maintaining the vane modulation function.
Solution Approach 2:
The driving shaft serves as an intermediary element that transmits power from the external actuator to the internal diffuser vanes. This mediator allows the actuator to be positioned outside the compressor while still achieving the desired modulation of the diffuser vanes through the shaft connection.
2Ease of operation
If the actuator is disposed inside the compressor, then the diffuser vane modulation is achieved, but the maintenance difficulty increases
Solution Approach 1:
The actuator is extracted from the compressor interior and repositioned to the exterior. This extraction allows maintenance personnel to access and service the actuator from the outside without disassembling the compressor, significantly reducing maintenance difficulty and downtime.
3Ease of operation
If the actuator is disposed inside the compressor, then the diffuser vane modulation is achieved, but the space consumption increases
Solution Approach 1:
The actuator is extracted from the compressor interior and repositioned to the exterior. This relocation eliminates the need to reserve internal compressor space for the actuator, allowing the compressor to maintain a more compact design while still achieving diffuser vane modulation.
Data Source
AI summary
A mechanism modulates a fluid flow in a diffuser flow path of a compressor diffuser, including: a shroud disposed on the diffuser flow path and having a cam and a driving wheel fixed base; a diffuser vane having a diffuser guide vane disposed in the diffuser flow path and a diffuser vane shaft fixedly disposed on the diffuser vane that penetrates from the diffuser flow path through the shroud; a driving ring sleeved on the cam and having a moving bar; a sliding block having one end connected with one end the diffuser vane shaft that penetrates through the shroud, and the other end sleeved on a sliding groove formed on the moving bar; a driving wheel disposed in the driving wheel fixed base and having a driving shaft connected to an actuator outside of the compressor; and a driving cable connected to the driving wheel and the driving ring.