Turbine internal shut-off valve

Abstract

The invention aims to provide an internal stop valve of a turbine. The internal stop valve comprises a turbine shell, a volute, an electric motor, a drive rod, a guide rod, and a valve; the volute is fixed on the turbine shell, and the valve is arranged in the turbine shell; the end part of the valve is arranged to be a trapezoid, and an entrance of the volute is provided with a trapezoid groove matched with the end part of the valve; the valve is fixedly connected with the guide rod, and the guide rod is extended out of the outer part of the turbine shell and connected with the drive rod; a rack is arranged on the drive rod, the electric motor connects and drives a gear, and the gear is meshed with the rack. Through a stepping motor, opening and closing of the valve are controlled; the response speed is quick; the free cut-in and cut-out of a booster can be realized; the sealing face consisting of the trapezoid groove and the valve can realize good sealing function besides, the trapezoid groove within a certain processing bias and the installing bias can automatically position the valve closing.

Description

technical field [0001] The invention relates to a turbocharger, in particular to a valve for controlling the opening and closing of the turbo. Background technique [0002] The use of superchargers on modern diesel engines has become more and more extensive. Turbochargers can increase the power of diesel engines and improve economy. In order to achieve a good match between the supercharger and the diesel engine, there are various supercharging systems, such as sequential supercharging systems and two-stage turbocharging systems, which control the cut-in and cut-off of the supercharger by designing valves on the pipeline. It can improve the economy of the diesel engine under different loads. However, this traditional method of controlling the cut-in and cut-out of the supercharger has some defects, such as air leakage due to poor sealing of the valve, and the valve on the pipeline is not only bulky but also has a small actual flow area, resulting in throttling loss during th...

AI Technical Summary

Problems solved by technology

However, this traditional method of controlling the cut-in and cut-out of the supercharger has some defects, such as air leakage due to poor sealing of the valve, and the valve on the pipeline is not only bulky but also has a small actual flow area, resulting in throttling loss during the gas flow process , and the switching process of the valve is slow, this series of problems makes the matching result of the supercharger and the diesel engine unsatisfactory

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