CN106215639A - The application in combustion engine of combustion engine dehumidification structure, dehumidifier and dehumidification control method thereof - Google Patents
The application in combustion engine of combustion engine dehumidification structure, dehumidifier and dehumidification control method thereof Download PDFInfo
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- CN106215639A CN106215639A CN201610650738.1A CN201610650738A CN106215639A CN 106215639 A CN106215639 A CN 106215639A CN 201610650738 A CN201610650738 A CN 201610650738A CN 106215639 A CN106215639 A CN 106215639A
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- combustion engine
- dehumidifier
- tca
- dehumidification
- control method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- Engineering & Computer Science (AREA)
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- Drying Of Gases (AREA)
Abstract
The present invention provides a kind of combustion engine dehumidification structure, dehumidifier application in combustion engine and dehumidification control method, TCA(turbine in combustion engine cools down air) external a set of dehumidifier system in system, it is applied to TCA and the RCA pipeline within combustion engine, the regions such as rotor disk shut down after be dried, after fundamentally avoiding combustion engine to shut down, humid air is full of TCA and RCA(rotor cooling air) pipeline, the regions such as rotor disk, thus there is corrosion phenomena in above-mentioned zone, and then cause corrosion to pile up and block combustion engine moving vane cooling duct, and moving vane may be caused to cool down burning phenomenon that is bad and that occur.
Description
Technical field
The present invention relates to power generation industries Combined Cycle Unit equipment technology reconstruction field, exist more particularly, to dehumidifier
Application in combustion engine TCA system and dehumidification control method thereof.
Background technology
At present, in the maintenance of combustion engine, occur in that T1S (t turbine first order movable vane) leaf top internal corrosion heap the most in various degree
Long-pending phenomenon, its reason is after combustion engine is shut down, and humid air is full of TCA(turbine cooling air) and RCA(rotor cooling air)
The region such as pipeline, rotor disk so that corrosion phenomena occur in these regions, and then cause corrosion to pile up and block combustion engine moving vane
Cooling duct, and moving vane may be caused to cool down burning phenomenon that is bad and that occur,
T1S leaf occurs that corrosion is piled up inside top, then blade interior cooling duct certainly will block, and cooling air will reduce therewith.As
Blocking is serious, and blade cooling effect will substantially be deteriorated, will result directly in blade scaling loss beyond can maintenance range, and then occur scrapping
Phenomenon, causes great economic loss.
After testing, this corrosion deposit is mainly composed of Fe2O3 (i.e. rust).Through each side inspection and eliminating, finally
Confirm that corrosion deposit main source includes that RCA pipeline substantially has one layer of grey black, the rust deposite of about 0.20mm thickness, rust deposite face
Amass and account for inner-walls of duct 1/4 ~ 1/2 and uniform fold whole pipeline after separator；Also include that rotor disk inwall gets rusty；
Experimental data shows, when unit start and stop every day, and minimum about 68 DEG C of TCA temperature after compressor emergency shutdown.Work as compressor emergency shutdown
After 36 hours, TCA temperature reduces to 60 DEG C, when shut down 72 little time after, almost identical with atmospheric temperature.Especially for air such as south
, the most often there is start-stop time more than 3 days situations in place that humidity is higher or as regulating units.Therefore, exist
After compressor emergency shutdown, after especially shutting down more than 72 hours, humid air will be filled with whole TCA system, when entering RCA pipeline and turning
When sub-wheel disc is internal, above-mentioned zone will unavoidably produce corrosion.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of combustion engine dehumidification structure, dehumidifier in combustion engine
Application and dehumidification control method, can effectively solve the impact of humid air cooling system after combustion engine is shut down, it is to avoid RCA pipeline and
Rotor disk internal corrosion.
For solving above-mentioned technical problem, present invention provide the technical scheme that external in the TCA system of combustion engine a set of remove
Wet machine system, described dehumidifier system includes dehumidifier.
External dehumidifier system in the TCA system of combustion engine, uses simple efficient mode fundamentally to solve combustion engine and stops
After machine, humid air is full of TCA and RCA(rotor cooling air) region such as pipeline, rotor disk, thus there is rust in above-mentioned zone
Erosion phenomenon, and then cause corrosion to pile up and block combustion engine moving vane cooling duct, and moving vane cooling may be caused bad and go out
Existing burning phenomenon
The separator that described dehumidifier is minimum with position in TCA system is connected.Reach being dried from root, effectively prevent corrosion
Situation occur.
Described dehumidifier entrance is equipped with the filter element higher than 0.4 micron level.Can ensure to keep same with compressor inlet coarse filtration
One precision, thus ensure that the granularity of dehumidifier outlet dry air meets combustion engine safe operation requirement, it is ensured that dehumidifier output
Gas be dried, clean.
Dehumidifier application in combustion engine, for the dehumidifying within combustion engine.Cannot carry for combustion engine internal corrosion and industry
For the problem of good solution, dehumidifier is applied in combustion engine, and for the dehumidifying within combustion engine, the dehumidifying accessed
Machine normally uses according to the logic that comes into operation described herein (i.e. control method), can be inherently eliminated after combustion engine is shut down moist
The air impact on cooling system, it is to avoid TCA, RCA pipeline and rotor disk internal corrosion.
A kind of combustion engine dehumidification control method, increases a set of dehumidifier system in the TCA system of combustion engine.By external dehumidifying
Machine produces enough, foot pressure dry air and is filled in pipeline, squeezes away wet air to be dried for a long time in value preserving pipeline.
After when unit outage 1.5～2 is little, put into operation dehumidifier.
After dehumidifier puts into operation, all drain valves of the pipeline of TCA system are normally off, during dehumidifier puts into operation, often
Interval is not less than time of two hours and opens the drain valve of TCA system pipeline at and confirm the flowing feelings of pipe interior dry air
Close after condition.
Within 0～3 hour before combustion engine opens machine, exit dehumidifier system.Guarantee that T1S external temperature exists with the temperature difference of dry air
Blade can be in tolerance range, it is to avoid cause blade stress big and engender plastic deformation accident.
Described dehumidifier exit design is manual-pneumatic-manually-manually-operated gate group form.
Described dehumidifier rate of discharge is more than 1m3/ min, dehumidifier outlet caliber is higher than DN250mm.Selection dehumidifier goes out
During the size of mouthful flow, need to take into account effect on moisture extraction and economy, control dry air within the shortest time and be full of whole
TCA system, it is ensured that the inner-walls of duct not corrosion by humidity.
Compared with prior art, present invention have the advantage that
The present invention provides the dehumidifying that the application in combustion engine of a kind of combustion engine dehumidification structure, dehumidifier and dehumidification control method are accessed
Machine normally uses according to the logic that comes into operation recommended, and can be inherently eliminated the humid air shadow to cooling system after combustion engine is shut down
Ring, it is to avoid RCA pipeline and rotor disk internal corrosion；
The optional dehumidifier less than 20kw of the power of dehumidifier, initial stage input cost is relatively low, and operating cost is relatively low, economic effect
Benefit is substantially.
Dehumidifier regular maintenance groundwork is periodic replacement import filter element, and simple to operate, maintenance cost is cheap.
In sum, it is feasible, safety that combustion engine TCA system increase dehumidifier transformation to be proven, economic benefit
Substantially, it is proposed that this transformation can be promoted.
Accompanying drawing explanation
Fig. 1 is the dehumidifier of the present invention positional structure schematic diagram in TCA system.
Detailed description of the invention
The present invention is carried out further below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that
Describe in detail.
Embodiment 1
As it is shown in figure 1, a kind of combustion engine dehumidification structure, the present embodiment be at Rhizoma Sparganii 9F combustion engine TCA(turbine cooling air) in system
External a set of dehumidifier system, after being applied to shut down the regions such as TCA and the RCA pipeline within combustion engine, rotor disk
Being dried, after fundamentally avoiding combustion engine to shut down, humid air is full of TCA and RCA(rotor cooling air) pipeline, rotor disk etc.
Region, thus there is corrosion phenomena in above-mentioned zone, and then cause corrosion to pile up and block combustion engine moving vane cooling duct, and may
The burning phenomenon causing moving vane cooling bad and to occur.
The present embodiment dehumidifier entrance configures 0.4 micron order filter element, it is ensured that keep same precision with compressor inlet coarse filtration,
Thus ensure that the granularity of dehumidifier outlet dry air meets the requirement of combustion engine safe operation.Dry air must assure that can be
Proper flow in whole TCA pipeline, and a whole set of pipe-line system can be rapidly filled with to reach effect on moisture extraction.
TCA manifold volume rough calculation: π × (0.45 ÷ 2) 2 × 80=12.717m3
Note: 0.45 is pipe diameter, 80 is duct length.
Due to TCA pipeline rout design complexity, crushing difficulty in computation is the biggest.This transformation uses Rhizoma Sparganii real machine checking data,
Dehumidifier rate of discharge is set greater than 1m3/ min, can ensure that dry air flows.Meanwhile, in order to take into account dehumidifying as far as possible
Effect and economy, the present embodiment selects rate of discharge to be 40 m3The dehumidifier of/min, after this dehumidifier puts into operation, in 5min
Even if dry air is full of whole TCA system, thus ensures the inner-walls of duct not corrosion by humidity.
Select the separator position that hydrops is the most serious, position is minimum to be filled with mouth as dry gas, effectively solve in combustion engine
The moisture issues of portion's passage.
Dehumidifier access system is as it is shown in figure 1, dehumidifier exit design is manual-pneumatic-pneumatic-manually-operated gate group shape
Formula.
The present embodiment dehumidifier outlet caliber uses DN250mm, owing to dehumidifier outlet pressure is the most little, uses
The caliber of DN250mm can avoid throttling serious, affects the effect of dry air flowing.
Dehumidifier applies the dehumidification control method in combustion engine to be:
After when unit outage 1.5 is little, T1S external temperature is about about 200 DEG C, and now, can put into operation dehumidifier.
As dehumidifier puts into after compressor emergency shutdown too early, it is possible that T1S external temperature and dry air excessive temperature differentials,
Cause blade stress big and engender plastic deformation accident.Therefore the making time of dehumidifier need to control in optimum range.
After dehumidifier puts into operation, all drain valves of TCA pipeline keep normally off.
During dehumidifier puts into operation, TCA pipeline somewhere drain valve can be opened at about 6 hours, to confirm that pipe interior is done
Dry air mobility status.
Open machine first about 1.5 hours at unit, exit dehumidifier system.
Embodiment 2
As it is shown in figure 1, a kind of combustion engine dehumidification structure, the present embodiment be at Rhizoma Sparganii 9F combustion engine TCA(turbine cooling air) in system
External a set of dehumidifier system, after being applied to shut down the regions such as TCA and the RCA pipeline within combustion engine, rotor disk
Being dried, after fundamentally avoiding combustion engine to shut down, humid air is full of TCA and RCA(rotor cooling air) pipeline, rotor disk etc.
Region, thus there is corrosion phenomena in above-mentioned zone, and then cause corrosion to pile up and block combustion engine moving vane cooling duct, and may
The burning phenomenon causing moving vane cooling bad and to occur.
The present embodiment dehumidifier entrance configures 0.5 micron order filter element, it is ensured that keep same precision with compressor inlet coarse filtration,
Thus ensure that the granularity of dehumidifier outlet dry air meets the requirement of combustion engine safe operation.Dry air must assure that can be
Proper flow in whole TCA pipeline, and a whole set of pipe-line system can be rapidly filled with to reach effect on moisture extraction.
TCA manifold volume rough calculation: π × (0.45 ÷ 2) 2 × 80=12.717m3
Note: 0.45 is pipe diameter, 80 is duct length.
Due to TCA pipeline rout design complexity, crushing difficulty in computation is the biggest.This transformation uses Rhizoma Sparganii real machine checking data,
Dehumidifier rate of discharge is set greater than 1m3/ min, can ensure that dry air flows.Meanwhile, in order to take into account dehumidifying as far as possible
Effect and economy, the present embodiment selects rate of discharge to be 30 m3The dehumidifier of/min, after this dehumidifier puts into operation, in 1min
Even if dry air is full of whole TCA system, thus ensures the inner-walls of duct not corrosion by humidity.
Select the separator position that hydrops is the most serious, position is minimum to be filled with mouth as dry gas, effectively solve in combustion engine
The moisture issues of portion's passage.
Dehumidifier access system is as it is shown in figure 1, dehumidifier exit design is manual-pneumatic-pneumatic-manually-operated gate group shape
Formula.
The present embodiment dehumidifier outlet caliber uses DN300mm, owing to dehumidifier outlet pressure is the most little, uses
The caliber of DN300mm can avoid throttling serious, affects the effect of dry air flowing.
Dehumidifier applies the dehumidification control method in combustion engine to be:
After when unit outage 1.6 is little, T1S external temperature is about about 200 DEG C, and now, can put into operation dehumidifier.
As dehumidifier puts into after compressor emergency shutdown too early, it is possible that T1S external temperature and dry air excessive temperature differentials,
Cause blade stress big and engender plastic deformation accident.Therefore the making time of dehumidifier need to control in optimum range.
After dehumidifier puts into operation, all drain valves of TCA pipeline keep normally off.
During dehumidifier puts into operation, TCA pipeline somewhere drain valve can be opened at about 3 hours, to confirm that pipe interior is done
Dry air mobility status.
Open machine first about 2 hours at unit, exit dehumidifier system.
Embodiment 3
As it is shown in figure 1, a kind of combustion engine dehumidification structure, the present embodiment be at Rhizoma Sparganii 9F combustion engine TCA(turbine cooling air) in system
External a set of dehumidifier system, after being applied to shut down the regions such as TCA and the RCA pipeline within combustion engine, rotor disk
Being dried, after fundamentally avoiding combustion engine to shut down, humid air is full of TCA and RCA(rotor cooling air) pipeline, rotor disk etc.
Region, thus there is corrosion phenomena in above-mentioned zone, and then cause corrosion to pile up and block combustion engine moving vane cooling duct, and may
The burning phenomenon causing moving vane cooling bad and to occur.
The present embodiment dehumidifier entrance configures 0.6 micron order filter element, it is ensured that keep same precision with compressor inlet coarse filtration,
Thus ensure that the granularity of dehumidifier outlet dry air meets the requirement of combustion engine safe operation.Dry air must assure that can be
Proper flow in whole TCA pipeline, and a whole set of pipe-line system can be rapidly filled with to reach effect on moisture extraction.
TCA manifold volume rough calculation: π × (0.45 ÷ 2) 2 × 80=12.717m3
Note: 0.45 is pipe diameter, 80 is duct length.
Due to TCA pipeline rout design complexity, crushing difficulty in computation is the biggest.This transformation uses Rhizoma Sparganii real machine checking data,
Dehumidifier rate of discharge is set greater than 1m3/ min, can ensure that dry air flows.Meanwhile, in order to take into account dehumidifying as far as possible
Effect and economy, the present embodiment selects rate of discharge to be 20 m3The dehumidifier of/min, after this dehumidifier puts into operation, in 1min
Even if dry air is full of whole TCA system, thus ensures the inner-walls of duct not corrosion by humidity.
Select the separator position that hydrops is the most serious, position is minimum to be filled with mouth as dry gas, effectively solve in combustion engine
The moisture issues of portion's passage.
Dehumidifier access system is as it is shown in figure 1, dehumidifier exit design is manual-pneumatic-pneumatic-manually-operated gate group shape
Formula.
The present embodiment dehumidifier outlet caliber uses DN350mm, owing to dehumidifier outlet pressure is the most little, uses
The caliber of DN350mm can avoid throttling serious, affects the effect of dry air flowing.
Dehumidifier applies the dehumidification control method in combustion engine to be:
After when unit outage 1.8 is little, T1S external temperature is about about 200 DEG C, and now, can put into operation dehumidifier.
As dehumidifier puts into after compressor emergency shutdown too early, it is possible that T1S external temperature and dry air excessive temperature differentials,
Cause blade stress big and engender plastic deformation accident.Therefore the making time of dehumidifier need to control in optimum range.
After dehumidifier puts into operation, all drain valves of TCA pipeline keep normally off.
During dehumidifier puts into operation, TCA pipeline somewhere drain valve can be opened at about 4 hours, to confirm that pipe interior is done
Dry air mobility status.
Open machine first about 1 hour at unit, exit dehumidifier system.
Being more than the wherein specific implementation of the present invention, it describes more concrete and detailed, but can not therefore manage
Solve as the restriction to the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from
On the premise of present inventive concept, it is also possible to make some deformation and improvement, these obvious alternative forms belong to this
Bright protection domain.
Claims (10)
1. a combustion engine dehumidification structure, it is characterised in that: external a set of dehumidifier system in the TCA system of combustion engine, described remove
Wet machine system includes dehumidifier.
Combustion engine dehumidification structure the most according to claim 1, it is characterised in that: in described dehumidifier and TCA system, position is
Low separator connects.
Combustion engine dehumidification structure the most according to claim 1, it is characterised in that: described dehumidifier entrance is equipped with micro-higher than 0.4
The other filter element of meter level.
4. dehumidifier application in combustion engine, it is characterised in that: for the dehumidifying within combustion engine.
5. a combustion engine dehumidification control method, it is characterised in that: in the TCA system of combustion engine, increase a set of dehumidifier system.
Combustion engine dehumidification control method the most according to claim 5, it is characterised in that: after when unit outage 1.5～2 is little,
Put into operation dehumidifier.
Combustion engine dehumidification control method the most according to claim 5, it is characterised in that: after dehumidifier puts into operation, the pipe of TCA system
All drain valves in road are normally off, during dehumidifier puts into operation, open TCA at interval of the time being not less than two hours
Close after the mobility status of the drain valve confirmation pipe interior dry air of system pipeline.
Combustion engine dehumidification control method the most according to claim 5, it is characterised in that: within 0～3 hour before combustion engine opens machine, exit
Dehumidifier system.
Combustion engine dehumidification control method the most according to claim 5, it is characterised in that: described dehumidifier exit design is hands
Dynamic-pneumatic-manually-manually-operated gate group form.
Combustion engine dehumidification control method the most according to claim 5, it is characterised in that: described dehumidifier rate of discharge is more than
1m3/ min, dehumidifier outlet caliber is higher than DN250mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610650738.1A CN106215639A (en) | 2016-08-10 | 2016-08-10 | The application in combustion engine of combustion engine dehumidification structure, dehumidifier and dehumidification control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610650738.1A CN106215639A (en) | 2016-08-10 | 2016-08-10 | The application in combustion engine of combustion engine dehumidification structure, dehumidifier and dehumidification control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575304A (en) * | 2017-10-24 | 2018-01-12 | 南通联科电子科技有限公司 | System is protected in a kind of combustion engine internal corrosion |
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|---|---|---|---|---|
| CN203417588U (en) * | 2013-07-12 | 2014-02-05 | 中节能工业节能有限公司 | Inlet air dehumidifying equipment of gas turbine |
| CN203892024U (en) * | 2014-06-04 | 2014-10-22 | 国电科学技术研究院 | Gas turbine inlet gas anti-icing dehumidifier |
| JP2015140691A (en) * | 2014-01-27 | 2015-08-03 | 三菱日立パワーシステムズ株式会社 | Gas turbine power generation system, gas turbine cooling air system dryer, and gas turbine cooling air system dry method |
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2016
- 2016-08-10 CN CN201610650738.1A patent/CN106215639A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203417588U (en) * | 2013-07-12 | 2014-02-05 | 中节能工业节能有限公司 | Inlet air dehumidifying equipment of gas turbine |
| JP2015140691A (en) * | 2014-01-27 | 2015-08-03 | 三菱日立パワーシステムズ株式会社 | Gas turbine power generation system, gas turbine cooling air system dryer, and gas turbine cooling air system dry method |
| CN203892024U (en) * | 2014-06-04 | 2014-10-22 | 国电科学技术研究院 | Gas turbine inlet gas anti-icing dehumidifier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575304A (en) * | 2017-10-24 | 2018-01-12 | 南通联科电子科技有限公司 | System is protected in a kind of combustion engine internal corrosion |
| CN107575304B (en) * | 2017-10-24 | 2024-05-03 | 南通联科电子科技有限公司 | Corrosion prevention method in gas turbine |
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