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

Cooling circuit for enhancing turbine performance

A cooling circuit, turbine technology, used in turbine/propulsion cooling, engine cooling, mechanical equipment, etc.

Inactive Publication Date: 2009-03-25
GENERAL ELECTRIC CO
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system uses conventional sealing techniques to seal the HPP and cannot attempt to modulate the required purge airflow beyond conventional angle wing seals

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
  • Cooling circuit for enhancing turbine performance
  • Cooling circuit for enhancing turbine performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Referring to Figure 1, the system uses seals 12, such as brush seals, adjustable seals, etc., to prevent excessive airflow from the compressor discharge and secondary (bypass) cooled cooling air system to compensate for Overall required purge airflow and cooling of critical components. The adjustable seal may be one that retracts during engine transients to minimize wear or damage to the seal, or the adjustable seal may be one that is adjusted in use to suit the performance of the seal. degradation.

[0023] Before sealing all critical components and the existing honeycomb, a seal 12 is placed upstream or adjacent to the inlet of the HPP circuit. As mentioned, the seal can be a traditional brush seal, an adjustable seal with an actuation system, etc.

[0024] The intake duct 14 or intake duct 14 is positioned to receive compressor discharge. Preferably, the circuit comprises two intake ducts 14 or ducts 14 of approximately 3" diameter.

[0025] In intake duct 14 the...

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 present invention relates to a cooling loop for reinforcing turbine performance. In a gas turbine having a compressor discharge casing, a cooling circuit diverts compressor discharge air toward a high pressure packing (HPP) circuit. The cooling circuit includes an inlet pipe that receives compressor discharge air. One or several cooled cooling air pipes are in fluid communication with the inlet pipe via a pipe manifold, which distributes the discharge air across the cooled cooling air pipes. A seal is disposed upstream of an entrance to the HPP circuit to limit flow into the HPP circuit, and a second seal is disposed downstream of the HPP circuit at turbine wheelspace to limit ingestion and thus the purge flow air required. The circuit serves to reduce required purge flow in the HPP circuit so that an amount of compressor discharge air can be put back to the main flow path, thereby improving turbine performance.

Description

technical field [0001] The present invention relates to a structure and method for enhancing turbomachine performance, and more particularly, to a cooling circuit that diverts compressor exhaust to supplement overall required purge airflow and cool critical turbomachine components. Background technique [0002] Compressor exhaust gas leaking through the high pressure charge (HPP) of the gas turbine is typically returned to the main gas path via the first forward wheel space between the first stage nozzle and the first stage buckets. This secondary gas path is referred to as the HPP circuit. This gas is used for two purposes: (1) it is used as a purge gas flow in the first wheelspace to prevent gasingestion; and (2) it cools critical components in the HPP circuit. Some of the critical components in the HPP circuit include the compressor's connecting bolts, marriage joint, nozzle support ring and first stage impeller. [0003] In some designs, the flow level in the HPP circu...

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): F02C7/12
CPCF02C7/12F01D25/12
Inventor B·方C·E·沃尔夫O·萨穆德拉拉M·S·凯特J·J·布特基维奇T·麦戈文
Owner GENERAL ELECTRIC CO