You need to post this in power generating facility engineering. We have DV's on Fr6 Gas Turbines and HRSG's they are base loaded. There are a number of issues with them but all specific to design and easily fixed. Two are electric and ine hydraulic. The electric seems to be less maintenance...
Use detergents and demin water if you have a wash system installed. We have used Carbo blast on our machines but only use online and offline water wash now because of the risk to blocking cooling holes. If you dont have a wash system installed then walnut shells are probably the only option...
No flex plate coupling will carry this load. We reuse coupling bolts on the frame 6 units without problem. Also, if they have been lubed during assembly they should come apart ok. The coupling is flexible in terms of 70,000 HP but not for a laser alignment. If you check with laser and with...
This is an interesting question as indicated by the number of answers.
Generally the recip engines will have a flatter heatrate curve and can be turned down with less effect on the efficiency in comparison to the GT's.
I imagine the HRSG will have a low load limit that limits the turndown of...
Power station is in Australia. There has been some movement on the issue by the gas supplier and I believe they are putting a coalescing filter in the line close to discharge of the compressors. I am not sure of the filter element rating, but will find out. They did admit to over lubricating...
Thanks all for the responses, We had an acceleration of the sulphur deposition in one GT supply and were forced to take the unit offline and blow out the gas line. When we inspected the internals with a camera it was clear that the S was worst after the regulating valve. The regulated pressure...
You will need to compare the heat-rate, output CPD and temp on the same basis. These need not be at STP. If you have data on the above factors after the unit was overhauled and or washed (and you recorded the ambient conditions at the time) then it would be possible to compare current...
You seem to have sufficient answers to you questions so I will not add to them. I'm interested in the statement you made regarding realignment of your load gearbox. We are in a similar situation I was interested to know if you found a cause for the gearbox movenment or if the movement was not...
The gas is within specification as fas as sulphur is concerned.
We regulate with pilot operated valves as you suspected. The sulphur can accumulate to significant quantities but we see it mostly at the first unit off the main. It has caused a trip of this unit to liquid fuel (back-up fuel)...
We operate a gas fired power station. A mix of gas converted PF fired boilers and CCGT's, some HRSG's with supplementary firing. We have had problems with sulphur blocking pressure regulating valves on the GT skids. The problem is intermittent, supporting the theory that the formation is a...
