Adjustable nozzle ring structure of marine mixed-flow turbocharger

Abstract

The invention discloses an adjustable nozzle ring structure for a ship mixed-flow turbo-superchager. The structure comprises a bearing casing and a drive mechanism for blades. A plurality of blades are arranged on the bearing casing and are supported on the bearing casing rotatably. The drive mechanism comprises a drive ring, and the blades are arranged in an inner hole of the drive ring. A plurality of drive pins extending along the axial direction of the drive ring are arranged at one end of the drive ring to be corresponding to the blades respectively. A drive arm is arranged between each drive pin and the corresponding blade, the ends of the drive arms are fixedly connected with corresponding blade rotation shafts, U-shaped sliding grooves are formed in the other ends of the drive arms along the radial directions of the corresponding blade rotation shafts, and drive pins are in clearance fit with the corresponding U-shaped sliding grooves in the drive arms respectively. The speed attack angle and the throat area of waste entering the turbine can be changed by changing the nozzle ring blade mounting angles, and the rotation speed and the flow of the turbo-superchager are adjustable, accordingly, the turbo-superchager and a diesel can operate in an effective and matching mode.

Description

technical field [0001] The invention relates to the field of ships, in particular to an adjustable nozzle ring structure of a marine mixed-flow turbocharger. Background technique [0002] The marine mixed-flow turbocharger is a typical diesel engine accessory component, working together with the diesel engine can effectively improve the performance of the diesel engine. In order to meet the best working conditions of the diesel engine, improve the working efficiency of the turbocharger, and ensure the best air-fuel ratio of the diesel engine, the nozzle ring with appropriate specifications is generally used to make the turbocharger and the diesel engine match and run in a better state. On this kind of exhaust gas turbocharger, the nozzle ring is fixedly installed at the inlet of the turbine blades, which is a key part to adjust the matching between the turbocharger and the operation of the diesel engine. important role of compressor speed. However, this fixed nozzle ring m...

AI Technical Summary

Problems solved by technology

However, this fixed nozzle ring makes the best operating range of the supercharger relatively small, especially when the ship encounters different sea conditions and requires the diesel engine to operate under variable working conditions, this fixed nozzle ring makes it difficult for the supercharger to achieve Appropriate working range, if you want to meet the requirements, you must replace the appropriate nozzle ring, which brings inconvenience to the working adaptability and maintenance usability of the supercharger

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