Filtering chamber and method for maintaining same

1. A filtering chamber configured to provide air to an inlet of a compressor, the filtering chamber comprising:

a first chamber in an inlet plenum, the first chamber comprising a first door and a prefilter installed in an intake port, the intake port being connected to an exterior of the filtering chamber;

a second chamber in the inlet plenum, the second chamber being separated by a intermediate filter and a final filter from the first chamber, and comprising a second door; and

an air bypass mechanism configured to reduce a pressure difference across the final filter, the pressure difference being generated by a suction of the compressor when the compressor is operating,

wherein the intermediate filter directly faces the final filter and a guard filter is installed downstream from the final filter.

2. The filtering chamber of claim 1 , wherein the air bypass mechanism comprises:

a first bypass port connecting the first chamber and the second chamber to each other.

3. The filtering chamber of claim 2 , wherein an area of the first bypass port is between 1 and 2 m 2 .

4. The filtering chamber of claim 3 , wherein the final filter cannot be extracted when the compressor is working and the first bypass port is open.

5. The filtering chamber of claim 2 , wherein the air bypass mechanism further comprises:

a second bypass port connecting the second chamber to the exterior of the filtering chamber.

6. The filtering chamber of claim 5 , wherein an area of the second bypass port is larger than an area of the first bypass port.

7. A gas turbine system, comprising:

a compressor configured to compress air;

a combustor fluidly connected to the compressor and configured to receive the compressed air;

a turbine connected to the combustor and configured to receive hot gases from the combustor for producing mechanical energy; and

the filtering chamber according to claim 1 , wherein the filtering chamber is connected to an inlet of the compressor, and is configured to clean the air provided to the compressor.

8. A method of operating a filtering chamber configured to provide cleaned air to a compressor, the method comprising:

removing or opening a first bypass port between a first chamber and a second chamber in the filtering chamber to reduce a pressure across a final filter, the final filter dividing the filtering chamber into the first chamber and the second chamber;

removing or opening a second bypass port between the second chamber and an exterior of the filtering chamber;

replacing the final filter;

closing the second bypass port; and

closing the first bypass port,

wherein the above steps take place while the compressor is online.

9. The method of claim 8 , wherein the filtering chamber comprises an intermediate filter and a final filter dividing the filtering chamber into the first chamber and the second chamber, the method further comprising:

opening a first door, entering the first chamber;

removing the intermediate filter to reveal the final filter;

opening a second door, entering the second chamber, and closing or leave it open the second door;

opening the second door, exiting the second chamber, and closing the second door;

reinstalling or replacing the intermediate filter to cover the replacement final filter; and

opening the first door, exiting the first chamber, and closing the first door,

wherein the above steps take place while the compressor is online.

10. The method of claim 8 , wherein the filtering chamber comprises an intermediate filter and a final filter dividing the filtering chamber into the first chamber and the second chamber, the method further comprising:

before removing or opening a first bypass port:

opening a first door, entering the first chamber; and

removing the intermediate filter to reveal the final filter;

after opening the second bypass port:

opening a second door, entering the second chamber, and closing or leave it open the second door;

after replacing the final filter:

opening the second door, exiting the second chamber, and closing the second door; and

after closing the first bypass port:

reinstalling or replacing the intermediate filter to cover the replacement final filter; and

opening the first door, exiting the first chamber, and closing the first door,

wherein the above steps take place while the compressor is online.

11. A filtering chamber configured to provide air to an inlet of a compressor, the filtering chamber comprising:

a first chamber comprising a prefilter and an intermediate filter;

a second chamber fluidly connected to the first chamber, and comprising a guard filter;

a final filter provided downstream the intermediate filter; and

a blade provided in the second chamber, and configured to rotate about a horizontal axis or a vertical axis such that a first row or a first column of cells of the final filter are sealed between a frame and the blade,

wherein the blade is configured to reduce a pressure difference acting on the first row or the first column of cells when the filtering chamber is active.