Variable section nozzle ring structure

Abstract

The invention discloses a variable section nozzle ring structure. The variable section nozzle ring structure comprises a poke plate, a blade welding assembly, special screws, a spacer sleeve, a back cover and active poke forks. One end of the poke plate is provided with the blade welding assembly. One end of the blade welding assembly is provided with the spacer sleeve. The spacer sleeve is connected with the blade welding assembly through the special screws. The back cover is installed on the outer side of one end of the spacer sleeve. According to the variable section nozzle ring structure, positioning holes are omitted; connecting is replaced with a bolt structure; the cost is low; installation and using are convenient; the reliability is high; the service life is prolonged by two times or above; the connecting pieces are changed from produced pieces to general standard purchased pieces; production is convenient and efficient; and a contribution is further made to popularization of variable section nozzle ring pressurizers.

Description

technical field [0001] The invention belongs to the technical field of nozzle rings, and in particular relates to a variable-section nozzle ring structure. Background technique [0002] The variable-section nozzle ring is used to improve the early intervention of the turbocharger at low engine speeds. Generally, the turbocharger engine will only intervene when it reaches the specified speed (8000 revolutions). In many cases, the turbocharger The supercharger does not work; because the working condition of the supercharger is high heat and high pressure, the relevant accessories are required to have high temperature resistance and fit without deformation, so that the action can be completed smoothly. The existing nozzle ring design uses a spacer + roller to support the connection between the toggle ring and the support plate of the variable cross-section nozzle ring. Due to high heat and high pressure, the thin gasket is easy to deform when it is subjected to high temperature...

AI Technical Summary

Problems solved by technology

The existing nozzle ring design uses a spacer + roller to support the connection between the toggle ring and the support plate of the variable cross-section nozzle ring. Due to high heat and high pressure, the thin gasket is easy to deform when it is subjected to high temperature and high pressure environment As a result, the toggle ring cannot move and is stuck, resulting in the failure of the nozzle ring, the failure of the supercharger, and the inability to provide proper power for the engine

[0003] The original structure uses a turbine bushing to connect the nozzle ring and the supercharger. The manufacturing process of the turbine bushing is complex, difficult to process, easy to deform, short in service life, poor in reliability, and difficult to precisely control its size.

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