ACTUATED BYPASS HOOD FOR GAS TURBINE AIR INLET SYSTEM AND METHODS

• US 20140123621A1
• Filed: 02/25/2013
• Published: 05/08/2014
• Est. Priority Date: 11/08/2012
• Status: Abandoned Application

• Current Assignee: Donaldson Company Incorporated
• Original Assignee: Donaldson Company Incorporated
• Inventors: Verbelen, Erwin Jean Marie, Vanderlinden, Jimmy, Driessens, Robin, Haag, Jon
• Application Number:
  US13/776,095
• Publication Number:
  US 20140123621A1
• Time in Patent Office: Days
• US Class Current: 60/39.092
• CPC Class Codes: B01D 2273/10 Allowing a continuous bypass of at least part of the flow, e.g. of secondary air, vents
• CPC Class Codes: B01D 2273/14 Filters which are moved between two or more positions, e.g. by turning, pushing
• CPC Class Codes: B01D 2279/60 for the intake of internal combustion engines or turbines intake systems for vehicles comprising filters F02M35/024
• CPC Class Codes: B01D 46/10 Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• CPC Class Codes: B01D 46/12 in multiple arrangements
• CPC Class Codes: F02C 7/052 with dust-separation devices
• CPC Class Codes: F02C 7/055 with intake grids, screens or guards
• CPC Class Codes: F05D 2270/3015 differential pressure
• CPC Class Codes: Y10T 29/49323 Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles

Abstract

An inlet hood for use with a gas turbine or compressor air inlet system includes a frame and at least one pre-filter pivotably held by the frame in an operating position. The pre-filter is pivotable to a bypass position angled relative to the operating position. Methods of assembly and use are provided.

Claims

1. An inlet hood for use with a gas turbine or compressor air inlet system;

the inlet hood comprising;

(a) a frame defining an opening; and

(b) at least one pre-filter pivotably held by the frame in an operating position covering the opening of the frame;

the pre-filter being pivotable to a bypass position that is angled at least 45°

relative to the operating position.

2. The inlet hood of claim 1 wherein:

(a) the frame comprises an upper hood member, first and second side panels, and a lower hood member.

3. The inlet hood of claim 1 further comprising:

(a) an actuator arrangement controlling pivoting of the pre-filter between the operating position and the bypass position.

4. The inlet hood of claim 3 wherein:

(a) the actuator arrangement comprises a pneumatic cylinder.

5. The inlet hood of claim 1 further comprising:

(a) at least a second pre-filter pivotably held by the frame and being pivotable between an operating position covering the opening of the frame and a bypass position at least 45°

relative to the operating position of the second pre-filter.

6. The inlet hood of claim 1 wherein:

(a) the pre-filter is pivotable to a bypass position that is angled no greater than 130°

relative to the operating position.

7. The inlet hood of claim 1 wherein:

(a) the pre-filter is pivotable to a bypass position that is angled 80°

-100°

relative to the operating position.

8. A gas turbine or compressor air inlet system comprising:

(a) an air filter enclosure;

(b) an inlet hood coupled in flow communication with the air filter enclosure;

the inlet hood including;

(i) a frame defining an opening; and

(ii) at least one pre-filter pivotably held by the frame in an operating position covering the opening of the frame;

the pre-filter being pivotable to a bypass position that is at least 45°

relative to the operating position;

wherein air entering the system flows through the pre-filter and then to the air filter enclosure, when the pre-filter is in the operating position;

and air bypasses the pre-filter and then to the air filter enclosure when the pre-filter is in the bypass position.

9. The system of claim 8 wherein:

(a) the frame comprises an upper hood member, first and second side panels, and a lower hood member.

10. The system of claim 8 further comprising:

(a) an actuator arrangement controlling pivoting of the pre-filter between the operating position and the bypass position.

11. The system of claim 10 further comprising:

(a) at least one sensor for at least one of temperature, relative humidity, and pressure drop across the pre-filter;

the actuator arrangement being responsive to the sensor.

12. The system of claim 10 wherein:

(a) the actuator arrangement comprises a pneumatic cylinder.

13. The system of claim 8 wherein:

(a) the frame is vertical relative to a horizontal mounting surface of the system;

the frame defining a vertical axis; and

(b) the pre-filter being pivotable about the vertical axis.

14. The system of claim 8 wherein:

(a) the pre-filter has a flow face generally parallel to the air filter enclosure, when the pre-filter is in the operating position.

15. The system of claim 8 wherein:

(a) the pre-filter has a flow face that is angled 80-100°

relative to the air filter enclosure when the pre-filter is in the bypass position.

16. The system of claim 8 wherein:

(a) the pre-filter is pivotable to a bypass position that is angled at least 70°

relative to the operating position.

17. The system of claim 8 wherein:

(a) the pre-filter is pivotable to a bypass position that is angled 80°

-100°

relative to the operating position.

18. A method of assembling an inlet air filter assembly for use with a gas turbine or compressor air inlet system;

the method comprising;

(a) coupling an inlet hood having a frame with an opening to an air filter enclosure, such that an airflow path is defined between the inlet hood and the air filter enclosure; and

(b) coupling a pre-filter to the frame such that the pre-filter is pivotably positioned between;

(i) an operating position in which the pre-filter is within the airflow path; and

(ii) a bypass position in which the pre-filter is at least 45°

relative to the operating position.

19. The method of claim 18 further comprising:

(a) coupling an actuator to the pre-filter to control pivoting of the pre-filter between the operating position and the bypass position.

20. The method of claim 18 wherein:

(a) the step of coupling a pre-filter to the frame includes coupling the pre-filter to the frame so that a flow face of the pre-filter is generally parallel to the air filter enclosure, when the pre-filter is in the operating position.