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Sealing arrangement and gas turbine with such sealing arrangement

A technology for gas turbines and sealing components, which is applied in gas turbine installations, engine sealing, mechanical equipment, etc., can solve problems such as increased leakage gaps, large relative motions of combustor and turbine modules, and poor sealing quality of seals

Inactive Publication Date: 2018-04-17
ANSALDO ENERGIA SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both lead to an increase in the leakage gap
The second problem is that sometimes the relative motion between the combustor and turbine modules is so great that it cannot be covered by the elastic properties of the material
This can lead to pinching of the seal and poor sealing quality

Method used

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  • Sealing arrangement and gas turbine with such sealing arrangement
  • Sealing arrangement and gas turbine with such sealing arrangement
  • Sealing arrangement and gas turbine with such sealing arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The basic idea of ​​the present invention is to provide a movable sealing device which is pressed against the vane platform by means of a pressure differential in order to avoid or at least reduce crushing of the seal during use.

[0023] figure 1 An arrangement within a gas turbine is disclosed, wherein the ducts 1 of the combustor (not shown) face the first stage of the vanes 2 of the turbine module, which receive the flow of hot gases produced by the combustion furnace. For example, duct 1 is one of a plurality of transition ducts from the first stage for connecting the respective combustion chamber to vanes 2 . The guide vanes deflect the flow of hot gas for effective interaction with the blades 3, which are supported by a rotating disk. The duct 1 comprises an outlet 5 for hot gas facing the first stage of the guide vanes 2 . The outlet is bounded at the outer diameter by an outer annular cavity 6 facing the outer diameter vane platform 7 ; and at the inner diame...

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PUM

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Abstract

A sealing arrangement at the interface between a combustor and a turbine of a gas turbine is disclosed. The turbine comprises deflecting vanes (2) at its inlet, which deflecting vanes (2) are each mounted within said turbine so as to define an inner or outer diameter platform (9) and are in sealing engagement by means of an inner or outer diameter vane tooth (9a) with a seal (10) arranged at the corresponding inner or outer diameter part of the outlet of said combustor, wherein the seal (10) is movable and is pressed on said inner or outer diameter vane tooth (9a) by a differential pressure such that the pressure of the mainstream hot gas flow is a lower pressure (P2).

Description

technical field [0001] The present invention relates to an interface seal apparatus assembly placed between a combustor and a turbine within a gas turbine installation. [0002] It also relates to a gas turbine with such a sealing arrangement. Background technique [0003] The combustor of a gas turbine is a generally stationary device that is interfaced to a turbine module comprising a plurality of rotating disks and blades attached to each disk. A seal is located approximately at the inner diameter between the combustor and the proximal turbine module having proximal vanes to deflect the flow of hot air toward the rotating blades. In particular, the seal faces the vane platform of the proximal vane and is designed to reduce leakage of cooling air in the main flow of hot gases and to absorb relative misalignment and thermal expansion differences between the combustor and vane platform . [0004] Document US7178340 discloses an elastic seal, preferably made of honeycomb m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D9/02F01D11/00F02C7/28
CPCF01D9/023F01D11/005F02C7/28F01D11/003F05D2240/55F16J15/46F05D2250/283F01D9/041F02C3/04F05D2220/32F05D2240/35F16J15/06F16J15/065
Inventor M.埃库德罗奥拉诺S.斯特鲁肯T.兹伊雷F.格拉夫A.埃罗格鲁J.R.麦纳里S.W.乔格森A.P.莫哈梅德
Owner ANSALDO ENERGIA SWITZERLAND AG