Unlock instant, AI-driven research and patent intelligence for your innovation.

Annular helmholtz damper for a gas turbine can combustor

一种燃气涡轮、阻尼器的技术，应用在燃气轮机装置、燃烧室、燃烧方法等方向，能够解决爆燃、阻尼器无法高效地工作、蒸发等问题

Active Publication Date: 2018-04-03
ANSALDO ENERGIA SWITZERLAND AG
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the amount of liquid collected in the damper exceeds a certain percentage of the damper volume, the damper can no longer function efficiently until the liquid is evaporated
In addition, if the liquid collected inside the damper contains fuel, there is a risk of deflagration in the damper volume during start-up of the gas turbine

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 helmholtz damper for a gas turbine can combustor
  • Annular helmholtz damper for a gas turbine can combustor
  • Annular helmholtz damper for a gas turbine can combustor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] With reference to the accompanying drawings, the technical content and detailed description of the present invention are described below according to preferred embodiments, but are not intended to limit its implementation scope. Any equivalent changes and modifications made according to the appended claims are all covered by the presently claimed claims.

[0054] The present invention will now be described in detail with reference to the accompanying drawings.

[0055] see figure 1 , which is a schematic distant view of an annular Helmholtz damper realized in one piece with an associated can combustor according to the invention. specifically, figure 1 A can combustor 14 is disclosed having an upstream end 15 and a downstream end 16 . For the terms "upstream" and "downstream" see at figure 1 The main flow of hot gas indicated by arrow M in . The can burner 14 is only schematically represented by a cylinder with a wall 2 . The combustion chamber corresponds to the i...

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

An annular Helmholtz damper for a gas turbine can combustor is provided, the annular Helmholtz damper having an axis and comprising: an inner wall and an outer wall concentrically arranged with respect to the axis to define an annular damping volume arranged around a can combustor; a front and a rear circumferential plate for closing upstream and downstream the annular damping volume; at least oneintermediate circumferential plate arranged between the front and the rear plates for dividing the annular damping volume in a main and a secondary volume; at least one main neck passing at the innerwall and configured for fluidly connecting the main volume with the can combustor chamber; at least one intermediate neck passing the intermediate circumferential plate configured for fluidly connecting the main volume with the secondary volume; a plurality of purge holes passing the rear circumferential plate configured for entering purge air in the secondary volume; a plurality of intermediatedrain holes passing the intermediate circumferential plate configured for draining collected liquid from the main volume to the secondary volume.

Description

technical field [0001] The present invention relates to dampers for gas turbines. In particular, the present invention relates to annular Helmholtz dampers for gas turbine can combustors configured to damp pressure fluctuations generated during operation of the gas turbine. Background technique [0002] A gas turbine is provided with one or more combustors in which fuel is injected, mixed into an air stream and ignited to generate high pressure gases that expand in the turbine. [0003] During operation, pressure fluctuations can develop within the combustion chamber, which can cause mechanical damage and limit operating regimes. Nevertheless, the frequency of these pressure fluctuations may vary slightly from gas turbine to gas turbine and furthermore for the same gas turbine it may also vary slightly during gas turbine operation (e.g. part load, base load, transition, etc.) change. [0004] Typically, gas turbines must be operated in lean mode in order to comply with po...

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): F23R3/00
CPCF23R3/00F23M20/005F23R3/002F23R2900/00014F05D2260/963F02C3/04F05D2220/32F05D2240/35F23R3/16F23R3/50
Inventor J.伊姆菲德P.马洛
Owner ANSALDO ENERGIA SWITZERLAND AG