Structures and Methods for Forcing Coupling of Flow Fields of Adjacent Bladed Elements of Turbomachines, and Turbomachines Incorporating the Same

a technology of turbomachine and flow field, which is applied in the direction of machines/engines, stators, liquid fuel engines, etc., can solve the problems of cracking or breaking the rotor blade and/or diffuser vanes, noise and vibration, etc., to improve increase the aerodynamic feedback, and increase the performance of the turbomachine

Inactive Publication Date: 2015-04-02
CONCEPTS ETI
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent is about a way to improve the performance of a turbomachine by designing a close-coupling flow guide (CCFG) that can increase the aerodynamic feedback between the blades of the turbomachine. This can be done by adding a structure to the turbomachine that has an effect on the flow field of the first bladed element. Overall, this design can help to increase the performance of the turbomachine.

Problems solved by technology

These unwanted interactions include the production of noise and vibration, the latter of which has been known to crack or break rotor blades and / or diffuser vanes.

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
  • Structures and Methods for Forcing Coupling of Flow Fields of Adjacent Bladed Elements of Turbomachines, and Turbomachines Incorporating the Same
  • Structures and Methods for Forcing Coupling of Flow Fields of Adjacent Bladed Elements of Turbomachines, and Turbomachines Incorporating the Same
  • Structures and Methods for Forcing Coupling of Flow Fields of Adjacent Bladed Elements of Turbomachines, and Turbomachines Incorporating the Same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031]Referring now to the drawings, FIG. 1 illustrates a turbomachine 100 made in accordance with the present invention and that includes a first bladed element 104 and an immediately adjacent second bladed element 108. Turbomachine 100 may be any type of turbomachine suitable for embodying features and aspects of the present invention, including, but not limited to, a compressor, turbine, pump, fan, etc., regardless of the category of the turbomachine, i.e., regardless of whether the turbomachine is a centrifugal machine, axial machine, mixed-flow machine, any other category of machine, or any combination thereof. As will become apparent to those skilled in the art from reading this entire disclosure, each of first and second bladed elements 104 and 108 can be a rotating element (e.g., a centrifugal impeller, centrifugal inducer, axial compressor wheel, axial turbine wheel, fan, pump wheel, etc.) or a stationary element (e.g., a diffuser, nozzle, flow guide, etc.).

[0032]As describ...

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

Turbomachines having close-coupling flow guides (CCFGs) that are designed and configured to closely-couple flow fields of adjacent bladed elements. In some embodiments, the CCFGs may be located in regions extending between the adjacent bladed elements, described herein as coupling avoidance zones, where conventional turbomachine design would suggest no structure should be added. In yet other embodiments, CCFGs are located upstream and / or downstream of rows of blades coupled to the bladed elements, including overlapping one of more of the rows of blades, to improve flow coupling and machine performance. Methods of designing turbomachines to incorporate CCFGs are also provided.

Description

RELATED APPLICATION DATA[0001]This application is a continuation of U.S. patent application Ser. No. 14 / 162,388, filed Jan. 23, 2014 and entitled “Structures and Methods for Forcing Coupling of Flow Fields of Adjacent Bladed Elements of Turbomachines, and Turbomachines Incorporating the Same,” (now allowed); and which claims the benefit of priority of U.S. Provisional Patent Application Ser. No. 61 / 755,747, filed on Jan. 23, 2013, and titled “Methods for Forced Coupling of Rotor-Stator Pairs and Turbomachines Incorporating the Same.” Each of these applications is incorporated by reference herein in its entirety.FIELD OF THE INVENTION[0002]The present invention generally relates to the field of turbomachinery. In particular, the present invention is directed to structures and methods for forcing coupling of flow fields of adjacent bladed elements of turbomachines, and turbomachines incorporating the same.BACKGROUND[0003]Turbomachinery, including compressors, pumps, and turbines, gene...

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 & AuthorityApplications(United States)
IPC IPC(8): F01D9/04B23P15/00
CPCF01D9/041F05D2240/121B23P15/006F01D5/225F01D9/045F04D29/162F04D29/167F04D29/444F04D29/448F04D29/685F05D2250/52Y10T29/49229F01D5/12F01D5/142F04D29/181F04D29/245F04D29/30F04D29/544F01D5/145F01D25/06F04D1/00F04D17/10F04D29/281F04D29/284F04D29/324F04D29/325F04D29/384F04D29/542F04D29/666F05D2240/126F05D2240/303
InventorJAPIKSE, DAVID
OwnerCONCEPTS ETI