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Combined type double-vortex-tube turbine shell

A turbine casing and double scroll technology, applied in stators, engine components, machines/engines, etc., can solve the problems of difficult processing, high maintenance costs, complex structure, etc., achieve simple structure, improve adaptability, avoid The effect of complex structures

Inactive Publication Date: 2017-12-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing turbine casings are often extremely complex in structure, difficult to process, high in maintenance costs, and greatly limited in application

Method used

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  • Combined type double-vortex-tube turbine shell
  • Combined type double-vortex-tube turbine shell
  • Combined type double-vortex-tube turbine shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 Shown is a combined double-scroll turbine casing, which includes a turbine casing main body 1 and an exhaust casing 3 connected to the turbine casing main body 1, and an exhaust port is opened at one end of the exhaust casing 3 301, an exhaust gas inlet 102 is opened on the main body 1 of the turbine housing, and a double-scroll mechanism and a turbine chamber 7 are sequentially arranged inside from the outside to the inside. 1. The second scroll channel 104, the first scroll channel 103 is located between the second scroll channel 104 and the exhaust casing 3, the exhaust gas inlet 102 passes through the first scroll channel 103, the second scroll channel The flow passage 104 communicates with the turbine chamber 7, the vane nozzle ring 2 is arranged between the first scroll passage 103 and the turbine chamber 7, and the vaneless nozzle 105 is arranged between the second scroll passage 104 and the turbine chamber 7 . A mounting flange 101 is provided...

Embodiment 2

[0036] Such as image 3 As shown, in this embodiment, the transition ring 6 and the first guide vane fixing ring 202 are integrally structured, and the rest are the same as in Embodiment 1.

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Abstract

The invention relates to a combined type double-vortex-tube turbine shell. The combined type double-vortex-tube turbine shell comprises a turbine shell main body and an exhaust shell body. An exhaust connector is formed in one end of the exhaust shell body. A waste gas inlet is formed in the turbine shell main body. A double-vortex-tube mechanism and a turbine chamber are formed inside the combined type double-vortex-tube turbine shell in sequence from outside to inside. The double-vortex-tube mechanism comprises a first vortex tube flow channel and a second vortex tube flow channel which are parallelly arranged in the turbine shell main body. The water gas inlet communicates with the turbine chamber through the first vortex tube flow channel and the second vortex tube flow channel. A blade nozzle ring is arranged between the first vortex tube flow channel and the turbine chamber, and a bladeless nozzle is arranged between the second vortex tube flow channel and the turbine chamber. Compared with the prior art, a double-vortex-tube structure is adopted, so that the efficiency and through-flow capacity of a turbine are both guaranteed, the characteristics of the high-load working condition and the low-load working condition are both taken into account, the sluggish problem of the turbine can be effectively improved, and the air inlet requirements of a car engine in different working conditions are met; and the combined type double-vortex-tube turbine shell is simple in structure, easy to demount, mount and maintain and good in flexibility.

Description

technical field [0001] The invention belongs to the technical field of engine turbocharging, and relates to a combined double-scroll turbine casing. Background technique [0002] As a mechanism for the turbocharger to absorb useful work from the exhaust of the engine, the turbine has an important impact on the performance of the turbocharger and even the engine. Since the turbine works in the extreme environment of high temperature and high pressure of engine exhaust, the design of the turbine must not only strengthen the material, but also have a highly reliable structure. At present, most turbine impellers adopt radial blade structure, and blade thickening measures are added to reduce deformation caused by thermal stress, high temperature and high speed coupling. However, although this method improves the reliability of the turbine to a certain extent, it sacrifices the work efficiency at the same time. [0003] In order to improve the work efficiency of the turbine, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/24F01D9/04
Inventor 范厚传倪计民姜楠王琦玮陈沁青
Owner TONGJI UNIV
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