Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Annular flow duct for a turbomachine through which a main flow can flow in the axial direction

A flow channel, fluid machinery technology, applied in the components of pumping devices for elastic fluids, mechanical equipment, machines/engines, etc., can solve problems such as suboptimal flow direction of tributaries

Active Publication Date: 2009-06-17
SIEMENS ENERGY AG
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The aforementioned configurations have the disadvantage that the flow guidance of the substreams is not optimal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Annular flow duct for a turbomachine through which a main flow can flow in the axial direction
  • Annular flow duct for a turbomachine through which a main flow can flow in the axial direction
  • Annular flow duct for a turbomachine through which a main flow can flow in the axial direction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] FIG. 1 shows a partial longitudinal section of a gas turbine 1 . Inside, it has a rotor 3 mounted in rotation about the machine axis 2 , which is also called a turbine rotor. Arranged successively along the rotor 3 is a suction housing 4 , a compressor 5 , a torus-shaped annular combustion chamber 6 with a plurality of burners 7 arranged rotationally symmetrically to one another, a turbine unit 8 and a smoke extraction chamber 9 . The annular combustion chamber 6 forms a combustion chamber 17 connected to an annular hot gas channel 16 . There, four successively connected turbine stages 10 form the turbine unit 8 . Each turbine stage 10 is formed, for example, from two blade rings. Viewed in the direction of flow of the hot gas 11 generated in the annular combustion chamber 6 , a rotor blade set 14 formed by rotor blades 15 correspondingly follows a guide vane set 13 in the hot gas channel 16 . The guide blades 12 are fastened to the stator, whereas the rotor blades 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an annular flow duct (18) for a turbomachine, said flow duct (18) being arranged concentrically about a machine axis (2) running in the axial direction and being defined by a boundary wall (22, 24) of circular cross section for directing a main flow (26), wherein the boundary wall (22, 24) has a plurality of return flow passages (46) which are distributed over its circumference and through which in each case a partial flow (49) which can be detached from the main flow (26) at a bleed position (50) can be returned to the main flow (26) at a feed position (52) situated upstream of the bleed position (50), and having aerofoils (32), arrranged radially in the flow duct (18), of a blade ring, the aerofoil tips (42) of which lie opposite the boundary wall (22, 24), with a gap being formed in each case, wherein the aerofoils (32) are movable in a predetermined rotation direction (U) along the circumference of the boundary wall (22 ,24). In order to specify a compressor which is insensitive to pumping and flow separations, it is proposed that as viewed in rotation direction (U) the bleed position (50) of each return flow passage lie upstream of the corresponding feed position (52).

Description

technical field [0001] The invention relates to a flow channel for a compressor, which is arranged concentrically around a machine axis extending in the axial direction and is delimited for the axially guided flow by a boundary wall having a circular cross-section, wherein the The dividing wall has a plurality of return channels distributed over its circumference, through which the partial flows which can be separated from the main flow at the withdrawal point can be returned to the feeding point upstream of the withdrawal point. is supplied to the main flow, and the flow channel has a blade ring radially arranged in the flow channel, the blade tip of which is correspondingly demarcated from the The walls are opposite. Background technique [0002] Gas turbines and their principles of operation are well known. The air sucked in by the compressor of the gas turbine is compressed there and then mixed with fuel in the combustor. This mixture flowing into the combustion chamb...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/14F04D27/02F04D29/68
CPCF04D29/685F01D5/145F04D29/681F01D5/143F04D29/526F04D27/0207Y02T50/60F01D5/14F04D27/02F04D29/68
Inventor R·贝耶尔M·布洛迈耶C·科尼利厄斯T·马蒂厄斯U·西伯
Owner SIEMENS ENERGY AG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com