TEMISA Power Gen · Explainer
Ver en españolSteam turbine generator maintenance for sugar mills
Steam turbine generator maintenance for sugar mills: generator overhaul between harvests. Diagnostics, repair and rewinding.
Published · 66.8 seconds · English and Spanish captions
Short answer
When is steam turbine generator maintenance scheduled at a sugar mill?
At a sugar mill, bagasse fires the boiler and steam drives the turbine that turns the turbogenerator. The narration uses a four-pole generator delivering 60 hertz at 1,800 revolutions as an example, running through the harvest and repaired between harvests. TEMISA Power Gen diagnoses, repairs and rewinds the turbogenerator. The boiler and the steam turbine are coordinated with the plant's specialist. Published service covers generators from 1 to 365 MVA; the nameplate sets the rating of each unit.
Video transcript
Download captions (.srt)- 00:00
This sugar mill powers
- 00:01
itself with its own
- 00:02
waste.
- 00:03
For every hundred tons
- 00:04
of cane it crushes,
- 00:05
almost 30 tons of
- 00:06
bagasse are left over.
- 00:08
So how does it
- 00:08
turn that into
- 00:09
electricity?
- 00:10
The mills squeeze the
- 00:12
cane and extract the
- 00:13
juice.
- 00:14
The leftover bagasse
- 00:15
travels to the boiler
- 00:15
where it burns.
- 00:17
That fire boils the
- 00:18
water running through
- 00:19
hundreds of tubes and
- 00:20
turns it into
- 00:21
high-pressure steam at
- 00:22
more than 300 degrees.
- 00:24
The steam enters the
- 00:25
turbine and pushes row
- 00:27
after row of blades,
- 00:28
spinning at thousands
- 00:29
of revolutions per
- 00:30
minute.
- 00:31
And once again the
- 00:32
gearbox shows up.
- 00:33
The reducer brings the
- 00:34
speed down to 1,800
- 00:35
for a four-pole
- 00:36
generator that
- 00:37
delivers 60 Hertz.
- 00:38
The steam leaving the
- 00:40
turbine is not wasted.
- 00:41
It goes to the
- 00:41
factory to heat and
- 00:43
evaporate the juice.
- 00:44
That is cogeneration.
- 00:46
The same principle
- 00:46
drives geothermal
- 00:47
plants like Cerro
- 00:48
Prieto in Baja
- 00:49
California where the
- 00:50
steam comes from the
- 00:51
earth.
- 00:52
At the mill,
- 00:53
the generator runs day
- 00:54
and night for the
- 00:55
whole harvest and gets
- 00:56
repaired between
- 00:57
harvests.
- 00:58
At TEMISA Power Gen,
- 00:59
we diagnose,
- 01:00
repair and rewind
- 01:01
turbogenerators.
- 01:03
Get a quote at
- 01:04
temisapowergen.mx
Questions from plant owners
What is a sugar-mill steam turbine generator overhaul?
It is the generator intervention in the window between harvests. The narration describes a generator that runs day and night through the harvest and is repaired between harvests. Scope can include diagnostics, repair and rewinding.
Does the service include the boiler or the steam turbine?
The scope is the turbogenerator, the electrical machine. The boiler, the steam and the turbine are coordinated with the plant's specialist.
Does the four-pole, 1,800-revolution example apply to every mill?
It is the narration's example: a four-pole generator delivering 60 hertz at 1,800 revolutions. Speed, pole count and rating for your unit are on the nameplate.
What rating is in scope?
Published generator service covers 1 to 365 MVA. The nameplate states the actual rating. A quote needs manufacturer, MVA, voltage, rpm, site, harvest end and the available window.
About the figures: Figures in the narration and in the on-screen graphics illustrate the example in the video. They are not the nameplate of a serviced generator and they are not acceptance limits.
About the footage: The video is an explainer animation. It does not document work on a customer's machine and it does not show a serial number.
Narration of the TEMISA Power Gen explainer video.
