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Active Contributor

Join Date: Jan 2009
Posts: 23

Turbine Driven Air Compressor L.O. Filter Pressure Drop Issue

01/26/2017 1:32 PM

Dear Sir,

Presently we are experiencing Unusual Lube Oil Pressure Drop Issue at our Duplex Filter Cartridge of our Turbine driven Air Compressor Lube Oil Console, After filter elements replacement, generally Dp: 0.25Kg/cm2 and reach to 0.6 Kg/cm2 within 10 days, after 0.6 Kg/cm2 it move forward faster to 1.5 Kg/cm2 within 02 days..where L.O. Temp. maintained between 46-48 deg C and previous filter elements replacement/ changeover normal periods : 04 months.

Our Engineering dept. is searching for the hidden sources Water contamination/ venting of console or any leakages in L.O pipelines, keeping on line centrifuges and LVDH.

Please suggest us based on your experiences regarding causing the Pressure Drop to increase faster than Normal..

Thanks & Regards.

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Guru

Join Date: Sep 2016
Posts: 613
Good Answers: 7
#1

Re: Turbine Driven Air Compressor L.O. filter Pressure Drop issue

01/26/2017 2:21 PM

Isolate your problem. One by one.

  1. First check integrity of measuring transducers. Please verify "are you getting reliable reading?" What type of transducers instrument you are using
  2. Check connections.
  3. Have you replaced it with the same part or type of filter

The rest is just commons sense and critical thinking.

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Active Contributor

Join Date: Jan 2009
Posts: 23
#4
In reply to #1

Re: Turbine Driven Air Compressor L.O. filter Pressure Drop issue

01/27/2017 1:20 PM

Thank you so much : gutmonarch for your suggestion, have checked our Pressure transmitter DPI 3_1 (Make: Rosemount), saying everything is oK. let us check more on integrity..

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Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
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#2

Re: Turbine Driven Air Compressor L.O. Filter Pressure Drop Issue

01/27/2017 4:52 AM

A filter's job is to block.

As a filter becomes "more blocked", for want of a better description, with time the pressure drop across it will rise with time.

Simples! ζ

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Power-User

Join Date: May 2011
Location: Northern California
Posts: 311
Good Answers: 28
#3

Re: Turbine Driven Air Compressor L.O. Filter Pressure Drop Issue

01/27/2017 12:48 PM

You could try oil analysis to answer the following:

- Did someone put in a thicker oil?

-Did someone mix incompatible oils making a gelatinous goo?

-Is varnish clogging your filters?

or:

Are the filters the same micron size?

Verified pressure drop with another gauge?

Could the downstream flow of oil been increased, meaning the back pressure is lower, making it difficult to maintain flow and pressure through the filter?

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Active Contributor

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Posts: 23
#5
In reply to #3

Re: Turbine Driven Air Compressor L.O. Filter Pressure Drop Issue

01/27/2017 1:36 PM

Thank you so much Dear Mr. jhowdy..yes we are using same Micron size filters elements. we have put same grade oil but different Lubricant Manufacturer, I understand different Lubricant mfg. may use different additive chemistries..

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Users who posted comments:

gutmonarch (1); jana_subrata (2); jhowdy (1); PWSlack (1)

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