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Recip Compressor

02/06/2016 7:34 PM

hi all,

we are operating a hyper compressor operate at discharge pressure around 2600 barg. suction temperature is normally less than 40 degC and the discharge temperature is around 90 degC.

during operation, we are normally monitor the

i. plunger temperature

ii. plunger vibration (millspp)

iii. leak gas rate (pressure and flow)

our operation can be vary, depend on production rate which mean the discharge pressure is sometime at 2600, 2620, 2650, and even up to 2700 barg. Of course, the higher the pressure, the higher the temperature we are operating.

we always observed that during this times, the (i, ii, iii) thing that we are monitoring are also behave differently. for example, we may have higher leak gas rate when we operate at higher temperature, and we may have a low plunger vibration if we operate at lower pressure.

i would appreciate if anyone that having the same experience and knowledge about this can share yours.

i more than glad if anyone can share a technical explanation for that equipment's behaviour.

thanks and have a good day!

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#1

Re: Recip Compressor

02/06/2016 7:45 PM

"i more than glad if anyone can share a technical explanation for that equipment's behaviour."

The equipment manufacturer would be the best source of this information, since you give no clue who that might be.

Try the operator's manual, or:

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#2
In reply to #1

Re: Recip Compressor

02/06/2016 8:04 PM

Are you advertising Windows 10 now?

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#3
In reply to #2

Re: Recip Compressor

02/06/2016 8:07 PM

I'd die a thousand deaths first.

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#4
In reply to #3

Re: Recip Compressor

02/06/2016 8:22 PM

Then do you want to edit that picture out of post 1? Oops, too late.

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#5
In reply to #4

Re: Recip Compressor

02/06/2016 8:45 PM

The irony will be lost on the OP.

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#19
In reply to #3

Re: Recip Compressor

02/08/2016 12:55 PM

The thing I have to love about Windows 10 is how it magically decides it knows what I want to do next, then deletes emails I merely hovered the cursor over for more than 1 microsecond.

If I could just get that cursor to hover over my wife? Not really, she is a good kiddo, only 12 years older than me.

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#9
In reply to #1

Re: Recip Compressor

02/06/2016 11:00 PM

lyn

any "guru" will not recommend this in the forum. that would be the 1st thing as a operator you should be doing. i doubt, how u get the "guru" title.. maybe just because of the number of your reply.

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#10
In reply to #9

Re: Recip Compressor

02/06/2016 11:04 PM

maybe you should consult this guy

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#12
In reply to #9

Re: Recip Compressor

02/07/2016 2:10 AM

So, you're saying that you called the equipment manufacturer and the equipment manufacturer didn't know what your problem was????

Oh well.

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#14
In reply to #9

Re: Recip Compressor

02/08/2016 5:44 AM

That the equipment manufacturer has been approached by telephone is a detail that is absent from the original post, and is also absent from this reply.

Absence of information is the only information the forum has available. Please do something about it, and advise further. PICK UP THE PHONE AND TALK TO THE EQUIPMENT MANUFACTURER! Then report back with the findings.

This is the first hyperbaric thread that CR4 has had in a long while, so please change expectations.

Plus, spread the problem out among the souls that comprise the <...we...>, and bring the minds of the rest of the <...we...> to bear upon it. First.

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#17
In reply to #9

Re: Recip Compressor

02/08/2016 9:16 AM

<...you should be doing...>

Invitation declined.

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#20
In reply to #9

Re: Recip Compressor

02/08/2016 1:03 PM

Really? You want to critique those whom you elicited a response from?

A little advice, since you seem not to have a lot of experience with this compressor:

(1) More pressure (and running hotter) takes more work, thus more force on the plunger, thus there is also probably some loss or thinning of lubricant film against the plunger during this part of operation. Be careful not to disintegrate your compressor!

(2) Have you actually read the operations manual for your compressor? Lost it? Dog ate it? Good luck - now see if you can find the boilerplate (nameplate) on the compressor, and then go fetch a telephone number for the manufacturer like a good boy, and get back to work.

(3) Vibration is a sure sign you are pushing the compressor outside its current workable operating range. Stop it. Change the oil once in a while. In fact, you should be doing oil analysis on this frequently to see if wear metal is showing up (especially after heavy loading on high temperature).

BTW - the guru title is bestowed by the site for a number of rated "good" answers. If you don't like the really good answer Lyn gave you, then pay attention to the next one after that, but you have no standing with which to start rating the posters on this web site. Lose the arrogance, or get lost.

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#6

Re: Recip Compressor

02/06/2016 8:49 PM

The harder that you push things, the more weird stuff that happens.

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#16
In reply to #6

Re: Recip Compressor

02/08/2016 9:15 AM

That applies to CR4 as well.

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#7

Re: Recip Compressor

02/06/2016 9:24 PM

let me guess..we are not talking lithium bromide??

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#21
In reply to #7

Re: Recip Compressor

02/08/2016 1:05 PM

Somebody needs some LiBr, or maybe the other way around, they need a six-pack of cold Bud-Lite.

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#8

Re: Recip Compressor

02/06/2016 9:50 PM

2600 barg?!!!

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#11
In reply to #8

Re: Recip Compressor

02/06/2016 11:49 PM

You mean not everyone has a compressor that goes up to 38,000+ PSI?

Okay I don't either but now I really want one!

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#15
In reply to #11

Re: Recip Compressor

02/08/2016 5:47 AM

Jealousy is an awkward human trait.

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#13

Re: Recip Compressor

02/07/2016 2:20 AM

I assume this is for a polymerisation process of some kind, and while I have no direct experience with these devices, I did read an article some time back that discussed leakage at higher pressures.

I remember that the stated cause was oxidation in the passageways of the device and that the addition of extra anti-oxidant to that already provided in the lubricant was beneficial in reducing leakage considerably.

It was not stated, nor did I consider it at the time, but it may be possible that high leakage rates would also cause increased plunger vibration, much like what occurs when you restrict the air escaping from the neck of a balloon.

Sorry, but I can't find a link to the article.

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#18

Re: Recip Compressor

02/08/2016 9:28 AM

Air ? oil ? gas ? water ? what ? - just wonder.

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