CN112412630A - Gas turbine compressor water washing system and control method thereof - Google Patents
Gas turbine compressor water washing system and control method thereof Download PDFInfo
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- CN112412630A CN112412630A CN202011416682.6A CN202011416682A CN112412630A CN 112412630 A CN112412630 A CN 112412630A CN 202011416682 A CN202011416682 A CN 202011416682A CN 112412630 A CN112412630 A CN 112412630A
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- 238000005406 washing Methods 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 101
- 239000003599 detergent Substances 0.000 claims abstract description 24
- 239000010865 sewage Substances 0.000 claims abstract description 14
- 239000013505 freshwater Substances 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 49
- 238000004140 cleaning Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/30—Preventing corrosion or unwanted deposits in gas-swept spaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
- F02C9/20—Control of working fluid flow by throttling; by adjusting vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Fluid Mechanics (AREA)
- Supercharger (AREA)
Abstract
The specification discloses a gas turbine compressor washing system and a control method thereof, wherein the washing system comprises: a first container for holding fresh water; a second container for holding a detergent; the first pipeline is provided with a first end and a second end, the first end is communicated with the first container, the second end is communicated with the gas compressor, and the second end is provided with a spray head facing the inner wall of the gas compressor and the gas inlet guide vane; the first pipeline is provided with a first sewage draining valve; a second line having a third end and a fourth end, the third end in communication with the second container and the fourth end in communication with the first line; the second blowdown valve is arranged at the lower end of the gas compressor, the third blowdown valve is arranged at the lower end of the turbine, and the fourth blowdown valve is arranged at the lower end of the tail flue; and the control part comprises a control button and is used for controlling the automatic starting and the skipping execution of the washing system. The gas turbine compressor washing system and the control method thereof provided by the specification have high washing efficiency, and after the system breaks down and stops working, the system can timely remove the fault and continue washing.
Description
Technical Field
The specification relates to the technical field of water washing, in particular to a gas turbine compressor water washing system and a control method thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
When the gas turbine works for a long time or in an environment with a serious air pollution degree, because the sucked air is not filtered completely, the through-flow part of the air compressor is gradually scaled or deposited with salt, the compression ratio and the efficiency of the air compressor are reduced, and blades are gradually corroded due to the deposited salt. The gas turbine compressor washing system cleans the gas compressor during operation or after shutdown of the gas compressor on the premise of no overhaul of the unit.
However, the existing gas turbine compressor water washing system is low in cleaning efficiency, and when the system breaks down, the problem of the fault cannot be solved in time, and the cleaning is continued.
It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions in the present specification and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present specification.
Disclosure of Invention
In view of the defects of the prior art, an object of the present specification is to provide a gas turbine compressor water washing system and a control method thereof, which have high washing efficiency, and can remove the fault in time after the water washing system fails and stops working, so as to continue washing.
In order to achieve the above object, an embodiment of the present disclosure provides a water washing system for a gas turbine compressor, including:
washing system is used for wasing compressor, turbine and the afterbody flue that links to each other, be equipped with air inlet guide vane in the compressor, washing system includes:
a first container for holding fresh water;
a second container for holding a detergent;
the first pipeline is provided with a first end and a second end, the first end is communicated with the first container, the second end is communicated with the gas compressor, and a spray head facing the inner wall of the gas compressor and the gas inlet guide vane is arranged on the second end; a first sewage discharge valve is arranged on the first pipeline;
a second line having a third end in communication with the second vessel and a fourth end in communication with the first line;
the second blowdown valve is arranged at the lower end of the gas compressor, the third blowdown valve is arranged at the lower end of the turbine, and the fourth blowdown valve is arranged at the lower end of the tail flue;
the control part is electrically connected with the first blowdown valve, the second blowdown valve, the third blowdown valve and the fourth blowdown valve; the control part comprises a control button for controlling the automatic start and the skipping execution of the washing system.
In a preferred embodiment, the inlet guide vane is connected with a first electric valve for controlling the opening degree of the inlet guide vane; the first electrically operated valve is electrically connected to the control section.
In a preferred embodiment, a flow control valve is provided in the second line to control the flow rate of the detergent, and the flow control valve is electrically connected to the control unit.
An embodiment of the present specification provides a control method for a gas turbine compressor water washing system, where the water washing system is used to wash a connected gas compressor, a turbine, and a tail flue, a gas inlet guide vane is arranged in the gas compressor, and the water washing system includes:
a first container for holding fresh water;
a second container for holding a detergent;
the first pipeline is provided with a first end and a second end, the first end is communicated with the first container, the second end is communicated with the gas compressor, and a spray head facing the inner wall of the gas compressor and the gas inlet guide vane is arranged on the second end; a first sewage discharge valve is arranged on the first pipeline;
a second line having a third end in communication with the second vessel and a fourth end in communication with the first line;
the second blowdown valve is arranged at the lower end of the gas compressor, the third blowdown valve is arranged at the lower end of the turbine, and the fourth blowdown valve is arranged at the lower end of the tail flue;
the control part is electrically connected with the first blowdown valve, the second blowdown valve, the third blowdown valve and the fourth blowdown valve; the control part comprises a control button for controlling the automatic starting and the skipping execution of the washing system;
the control method comprises the following steps:
judging whether a starting condition is met;
if yes, the water washing system is automatically started;
the washing system sequentially performs a clear water washing step, a detergent washing step, a soaking step, a clear water washing step and a spin-drying step;
after the spin-drying step is completed, the water washing system automatically stops;
after the washing system stops working because the washing system does not receive the feedback signal, artificially judging whether the feedback signal can be ignored;
and if the feedback signal can be ignored, pressing the control button to enable the water washing system to execute the next step.
As a preferred embodiment, if the feedback signal cannot be ignored, a stop button is pressed to stop the operation of the water washing system; the shutdown step includes:
closing the water washing pump and the corresponding valve;
and when the second blow-down valve, the third blow-down valve and the fourth blow-down valve are drained, closing the combustion engine to enable the rotation speed of the combustion engine to be 0 rpm.
As a preferred embodiment, the start-up conditions include: the engine lubrication oil system has been started, and the engine starter motor has been powered, and the engine has been shut down, and the fluid levels of the first and second reservoirs are normal.
As a preferred embodiment, the rinsing step comprises:
opening the corresponding valve;
starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm;
starting a washing pump to flush the first pipeline, and discharging sewage for 1min through the first sewage discharge valve;
cleaning the compressor, the turbine and the tail flue for 5 min;
the water wash pump was turned off.
As a preferred embodiment, the detergent rinsing step and the soaking step include:
opening a flow regulating valve, starting a washing pump, and spraying the liquid mixed with the detergent to the gas compressor, the turbine and the tail flue;
the second blowdown valve, the third blowdown valve and the fourth blowdown valve discharge sewage, and when the liquid level of the second container is reduced to a preset value, the washing pump is closed and the corresponding valves are closed;
and closing the combustion engine and soaking the combustion engine for 40 min.
As a preferred embodiment, the rinsing step comprises:
starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm;
starting a washing pump to wash the compressor, the turbine and the tail flue with clean water through the first pipeline;
and after the second blow-down valve, the third blow-down valve and the fourth blow-down valve discharge clean water, the combustion engine and the water washing pump are closed.
As a preferred embodiment, the spinning step includes:
starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm;
opening an air inlet guide vane to reach 85 degrees, sucking air through the air compressor, and drying the air compressor, the turbine and the tail flue;
and when the second blowoff valve, the third blowoff valve and the fourth blowoff valve are drained, closing the combustion engine, the second blowoff valve, the third blowoff valve and the fourth blowoff valve.
Has the advantages that: the gas turbine compressor washing system provided by the embodiment of the specification can firstly realize the blowdown of a first pipeline by arranging the first blowdown valve, and can effectively discharge the blowdown and improve the cleaning efficiency by arranging the second blowdown valve, the third blowdown valve and the fourth blowdown valve which respectively correspond to the gas turbine, the turbine and the tail flue of the gas turbine. After the washing system breaks down and stops working, whether the missing feedback signal can be ignored or not can be judged artificially, if yes, the control button can be pressed, and the next step is continuously executed; if not, the fault can be eliminated in time so as to continue cleaning.
The control method of the gas turbine compressor washing system provided by the embodiment of the specification can automatically start and stop the washing system, and sequentially execute the clear water washing step, the detergent washing step, the soaking step, the clear water washing step and the spin-drying step, so that the washing efficiency can be improved. After the washing system stops working due to the fact that the feedback signal is not received, whether the missing feedback signal can be ignored or not can be judged manually, if yes, the control button can be pressed, and the next step is continuously executed; if the fault can not be ignored, the fault can be timely eliminated according to the feedback signal so as to continuously clean.
Specific embodiments of the present specification are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the specification may be employed. It should be understood that the embodiments of the present description are not so limited in scope.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present specification, and other drawings can be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a schematic structural diagram of a water washing system for a gas turbine compressor provided in an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating steps of a method for controlling a compressor water washing system of a combustion engine according to an embodiment of the present disclosure.
Description of reference numerals:
1. a compressor; 2. a turbine; 3. a tail flue; 4. an air inlet guide vane; 5. a first container; 6. a second container; 7. a first pipeline; 8. a spray head; 9. a first waste valve; 10. a second pipeline; 11. a second blowoff valve; 12. a third blowoff valve; 13. a fourth blowoff valve; 14. a control button; 15. a first electrically operated valve; 16. a flow control valve; 17. a first node; 18. a second electrically operated valve; 19. a water washing pump; 20. a first check valve; 21. a second check valve; 22. a restriction orifice plate; 23. a liquid level detector; 24. a pressure gauge; 25. a flow meter; 26. a shutdown button.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present specification, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present specification without any creative effort shall fall within the protection scope of the present specification.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in the description of the specification herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the specification. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Please refer to fig. 1. The embodiment of the specification provides a gas turbine compressor water washing system which is used for washing a compressor 1, a turbine 2 and a tail flue 3 which are connected. An air inlet guide vane 4 is arranged in the air compressor 1. The water washing system may include a first container 5, a second container 6, a first line 7, a second line 10, a first soil exhaust valve 9, a second soil exhaust valve 11, a third soil exhaust valve 12, a fourth soil exhaust valve 13, and a control part. Wherein the first container 5 is for containing fresh water. The second container 6 is for containing detergent. The first line 7 has a first end and a second end. The first end is communicated with the first container 5, and the second end is communicated with the compressor 1. And the second end is provided with a nozzle 8 facing the inner wall of the compressor 1 and the air inlet guide vane 4. The second pipeline 10 has a third end and a fourth end. The third end is in communication with a second container 6 and the fourth end is in communication with a first line 7. The first sewage discharge valve 9 is arranged on the first pipeline 7; the second blow-down valve 11 is arranged at the lower end of the compressor 1; the third blowdown valve 12 is provided at the lower end of the turbine 2; the fourth blowoff valve 13 is arranged at the lower end of the tail flue 3. Four blow-down valves are used to drain dirt during the cleaning process. The control part is electrically connected with the first blowdown valve 9, the second blowdown valve 11, the third blowdown valve 12 and the fourth blowdown valve 13. The control section comprises control buttons 14 for controlling the automatic start-up and the execution of the jump of the washing system.
The gas turbine compressor washing system provided by the embodiment of the specification can firstly realize the pollution discharge of the first pipeline 7 by arranging the first pollution discharge valve 9, and can effectively discharge the pollution and improve the cleaning efficiency by arranging the second pollution discharge valve 11, the third pollution discharge valve 12 and the fourth pollution discharge valve 13 which respectively correspond to the gas turbine compressor 1, the turbine 2 and the tail flue 3 of the gas turbine. After the washing system breaks down and stops working, whether the missing feedback signal can be ignored or not can be judged artificially, if yes, the control button 14 can be pressed, and the next step is continuously executed; if not, the fault can be eliminated in time so as to continue cleaning.
In the embodiment of the present specification, the inlet guide vane 4 is connected to a first electrically operated valve 15 for controlling the opening degree of the inlet guide vane 4. The first motor-operated valve 15 is electrically connected to the control unit. The cleaning efficiency can be further improved by controlling the opening of the inlet guide vane 4 by the first motor-operated valve 15.
In the embodiment of the present specification, a flow control valve 16 is provided on the second line 10 to control the flow rate of the detergent. The flow control valve 16 is electrically connected to the control unit. The second line 10 is located at a first node 17 of the first line 7 and the first blow-off valve 9 is located between the compressor 1 and the first node 17, so that a better cleaning blow-off of the first line 7 is achieved before the combustion engine is cleaned.
In particular, the first line 7 is provided with a second electrically operated valve 18 between the compressor 1 and the first node 17 for controlling the flow in the first line 7. The first line 7 is provided with a water wash pump 19 between the first node 17 and the first container 5 for delivering water or detergent to said spray head 8. The first line 7 is provided with a first non-return valve 20 between the first node 17 and the first container 5 for preventing said fresh water from flowing back to the first container 5. A second check valve 21 is provided on the second pipeline 10 for preventing the detergent from flowing back to the second container 6. The control unit is electrically connected to the second motor-operated valve 18, the water washing pump 19, the first check valve 20, and the second check valve 21.
More specifically, the first line 7 may be provided with a restriction orifice 22 for allowing excess fresh water to flow back into the first vessel 5 for restriction. And liquid level detection meters 23 are arranged on the first container 5 and the second container 6, and the liquid level detection meters 23 are electrically connected with the control part. By this liquid level detection meter 23, the liquid level height in the first container 5 and the second container 6 can be obtained. The first pipeline 7 may be provided with a pressure gauge 24 and a flow meter 25 for obtaining the pressure and flow rate of the fluid in the first pipeline 7.
Please refer to fig. 2. The embodiment of the specification provides a control method of a gas turbine compressor water washing system. The control method comprises the following steps:
s10: judging whether a starting condition is met;
s20: if yes, the water washing system is automatically started;
s30: the washing system sequentially performs a clear water washing step, a detergent washing step, a soaking step, a clear water washing step and a spin-drying step;
s40: and after the spin-drying step is completed, the water washing system automatically stops.
In the above steps S10 to S40, after the washing system stops working because it does not receive the feedback signal, it is artificially determined whether the feedback signal can be ignored; if the water can be ignored, the control button 14 is pressed to enable the water washing system to execute the next step.
The control method of the gas turbine compressor washing system provided by the embodiment of the specification can automatically start and stop the washing system, and sequentially execute the clear water washing step, the detergent washing step, the soaking step, the clear water washing step and the spin-drying step, so that the washing efficiency can be improved. After the washing system stops working because the feedback signal is not received, whether the lacked feedback signal can be ignored or not can be judged artificially, if yes, the control button 14 can be pressed, and the next step is continuously executed; if the fault can not be ignored, the fault can be timely eliminated according to the feedback signal so as to continuously clean.
In an embodiment of the present specification, the start-up conditions include: the engine lubrication oil system has been started and the engine starting motor has been powered and the engine has been shut down and the liquid levels of said first and second containers 5, 6 are normal. After the control button 14 is pressed, the control part receives the four feedback signals, and the water washing system is automatically started.
In an embodiment of the present specification, the fresh water washing step may include: opening the corresponding valve; starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm; starting a water washing pump 19 to flush the first pipeline 7, and discharging sewage for 1min through the first blowdown valve 9; cleaning the compressor 1, the turbine 2 and the tail flue for 35 min; the water wash pump 19 is turned off.
Wherein, opening the corresponding valves specifically comprises opening the first blow-off valve 9, the second blow-off valve 11, the third blow-off valve 12, the fourth blow-off valve 13, the first electric valve 15 and the second electric valve 18. Opening the first electro valve 15 enables the inlet guide vanes 4 to be opened. Keeping the flow control valve 16 closed. The control unit starts the combustion engine upon receiving the valve signal, and may drive the combustion engine by an electric motor, for example. The rotation speed of the combustion engine can be other preset values, and the 300rpm is a reference value and can be adjusted according to needs. The control unit controls the water wash pump 19 to start after receiving a signal that the engine speed reaches a predetermined value. After the control unit receives a signal for starting the water washing pump 19, the control unit keeps the first predetermined time to flush the first line 7. The above-mentioned 1min is a reference value, and the first predetermined time can be adjusted according to the need. After the control part receives the signal that the first preset time is up, the control part controls the first exhaust valve 9 to close. After the control part receives the signal that the first blowoff valve 9 is closed, the second preset time is kept, whether the second blowoff valve 11, the third blowoff valve 12 and the fourth blowoff valve 13 discharge clean water or not is judged, whether the clean water is discharged or not can be judged manually, or a water quality detector electrically connected with the control part is arranged, so that water quality signals discharged by the second blowoff valve 11, the third blowoff valve 12 and the fourth blowoff valve 13 are fed back to the control part. The above 5min is a reference value, and the second predetermined time can be adjusted as required. And after the control part receives the signal that the second preset time is up and the signals that the second blowdown valve 11, the third blowdown valve 12 and the fourth blowdown valve 13 discharge the clean water, the control part controls the water washing pump 19 to stop.
In the embodiment of the present specification, the detergent rinsing step and the soaking step may include: opening a flow regulating valve, starting a washing pump 19, and spraying the liquid mixed with the detergent to the compressor 1, the turbine 2 and the tail flue 3; the second blowdown valve 11, the third blowdown valve 12 and the fourth blowdown valve 13 discharge sewage, and when the liquid level of the second container 6 is reduced to a preset value, the washing pump 19 is closed and the corresponding valves are closed; and closing the combustion engine and soaking the combustion engine for 40 min.
When the control unit receives a signal that the washing pump 19 is stopped, the control unit controls the flow control valve 16 to open to control the flow rate of the detergent to a desired value. When the control unit receives a signal that the flow rate control valve 16 is opened, the control unit controls the water washing pump 19 to be started and the second motor-operated valve 18 to be opened. After the control part receives the signals that the water washing pump 19 is started and the second electric valve 18 is opened, if the control part receives the signals that the second blow-down valve 11, the third blow-down valve 12 and the fourth blow-down valve 13 discharge the detergent and the liquid level of the second container 6 is reduced to a preset value, the control part controls the water washing pump 19 to stop, and controls the flow control valve 16, the second blow-down valve 11, the third blow-down valve 12, the fourth blow-down valve 13 and the first electric valve 15 to close. After the control unit receives a signal that the water wash pump 19 has stopped and the corresponding valve has closed, the combustion engine is controlled to shut down. And after the control part receives the signal that the rotation speed of the combustion engine reaches 0rpm, keeping the rotation speed for the third preset time. The above 40min is a reference value, and the third predetermined time can be adjusted as required.
In an embodiment of the present specification, the rinsing step includes: starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm; starting a water washing pump 19 to wash the compressor 1, the turbine 2 and the tail flue 3 with clean water through the first pipeline 7; and after the second blowdown valve 11, the third blowdown valve 12 and the fourth blowdown valve 13 discharge clean water, closing the combustion engine and the water washing pump 19.
After the control part receives a signal that the third preset time is up, the second blow-down valve 11, the third blow-down valve 12, the fourth blow-down valve 13 and the first electric valve 15 are controlled to be opened, and the combustion engine is started. The first electro valve 15 may control the inlet guide vanes 4 to open. After the control part receives signals that the corresponding valve is opened and the rotating speed of the combustion engine reaches a preset value, the control part controls the water washing pump 19 to be started and the second electric valve 18 to be opened. After the control part receives the signals that the water washing pump 19 is started and the second electric valve 18 is opened, the fourth preset time (for example, 25min) is kept until the second blow-down valve 11, the third blow-down valve 12 and the fourth blow-down valve 13 discharge the clean water. And after the control part receives the signals that the fourth preset time is up and the blowdown valves discharge the clean water, the control part controls the washing pump 19 and the second electric valve 18 to be closed. The control unit controls the engine to stop when it receives a signal that the water wash pump 19 and the second electric valve 18 are closed.
In an embodiment of the present specification, the spin-drying step may include: starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm; opening an air inlet guide vane 4 to 85 degrees, sucking air through the air compressor 1, and drying the air compressor 1, the turbine 2 and the tail flue 3; and when the second blowoff valve 11, the third blowoff valve 12 and the fourth blowoff valve 13 are drained, closing the combustion engine, the second blowoff valve 11, the third blowoff valve 12 and the fourth blowoff valve 13.
Wherein, after the control part receives the signal that the rotating speed of the combustion engine reaches 0rpm, the combustion engine is controlled to start. After the control unit receives a signal that the engine speed reaches a predetermined value, the control unit controls the first electrically operated valve 15 to open the intake guide vane 4 to a predetermined angle. The predetermined angle may be adjusted as desired, and may be, for example, 85 degrees. And after the control part receives a signal that the second blowdown valve 11, the third blowdown valve 12 and the fourth blowdown valve 13 are drained, the control part controls the engine to stop rotating and controls the second blowdown valve 11, the third blowdown valve 12 and the fourth blowdown valve 13 to be closed.
In the embodiment of the present specification, if it is determined that the missing feedback signal cannot be ignored, the operation of the water washing system may be stopped before the fault is timely cleared according to the feedback signal. Specifically, the water wash system may be provided with a stop button 26, and pressing the stop button 26 may cause the water wash system to stop. Alternatively, the water wash system may be shut down by pressing the shut down button 26 during the water wash. The shutdown step includes: the water wash pump 19 and corresponding valves are closed; and when the second blow-down valve 11, the third blow-down valve 12 and the fourth blow-down valve 13 are drained, the combustion engine is closed, and the rotation speed of the combustion engine is 0 rpm.
Wherein closing the respective valve comprises closing the second electrically operated valve 18 and the flow control valve 16. After the control part receives the signals that the water washing pump 19, the second electric valve 18 and the flow control valve 16 are closed and the signals that the second blow-down valve 11, the third blow-down valve 12 and the fourth blow-down valve 13 are not drained, the second blow-down valve 11, the third blow-down valve 12 and the fourth blow-down valve 13 are closed, and the combustion engine is controlled to stop. After the control part receives the signals that the second blow-down valve 11, the third blow-down valve 12 and the fourth blow-down valve 13 are closed and the rotation speed of the combustion engine is 0rpm, the stop step is finished.
The control method of the gas turbine compressor water washing system provided by the specification has the following advantages:
1. the automatic starting of the washing system in the full stop state and the automatic stopping in the running state are realized;
2. the automatic starting of the washing system in a partial starting state is realized without interfering with the original running state;
3. considering human judgment, the skipping operation of the washing system can be realized, when the condition of a certain step is not realized or not satisfied, the control part cannot receive the original signal and the step cannot be carried out, the condition can be manually judged whether can be ignored, if yes, the control button 14 can be pressed to continue to execute the subsequent steps until the completion; if the feedback signal cannot be ignored, the fault can be timely eliminated according to the signal which cannot be received, the problem is pertinently eliminated, and the follow-up steps are continuously executed until the feedback signal is received, so that the cleaning is continuously carried out. Before troubleshooting the problem, the shutdown button 26 may be pressed to stop the water washing system.
It should be noted that, in the description of the present specification, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is present therebetween, and no indication or suggestion of relative importance is to be made. Further, in the description of the present specification, "a plurality" means two or more unless otherwise specified.
Any numerical value recited herein includes all values from the lower value to the upper value, in increments of one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.
Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed subject matter.
Claims (10)
1. The utility model provides a gas turbine compressor water washing system, its characterized in that, water washing system is used for wasing continuous compressor, turbine and afterbody flue, be equipped with air inlet guide vane in the compressor, water washing system includes:
a first container for holding fresh water;
a second container for holding a detergent;
the first pipeline is provided with a first end and a second end, the first end is communicated with the first container, the second end is communicated with the gas compressor, and a spray head facing the inner wall of the gas compressor and the gas inlet guide vane is arranged on the second end; a first sewage discharge valve is arranged on the first pipeline;
a second line having a third end in communication with the second vessel and a fourth end in communication with the first line;
the second blowdown valve is arranged at the lower end of the gas compressor, the third blowdown valve is arranged at the lower end of the turbine, and the fourth blowdown valve is arranged at the lower end of the tail flue;
the control part is electrically connected with the first blowdown valve, the second blowdown valve, the third blowdown valve and the fourth blowdown valve; the control part comprises a control button for controlling the automatic start and the skipping execution of the washing system.
2. The gas turbine compressor water washing system of claim 1, wherein the inlet guide vane is connected with a first electric valve for controlling the opening degree of the inlet guide vane; the first electrically operated valve is electrically connected to the control section.
3. The gas turbine compressor water washing system as claimed in claim 1, wherein a flow control valve is arranged on the second pipeline and used for controlling the flow of the detergent, and the flow control valve is electrically connected with the control part.
4. The control method of the gas turbine compressor water washing system is characterized in that the water washing system is used for washing the connected gas compressor, turbine and tail flue, an air inlet guide vane is arranged in the gas compressor, and the water washing system comprises:
a first container for holding fresh water;
a second container for holding a detergent;
the first pipeline is provided with a first end and a second end, the first end is communicated with the first container, the second end is communicated with the gas compressor, and a spray head facing the inner wall of the gas compressor and the gas inlet guide vane is arranged on the second end; a first sewage discharge valve is arranged on the first pipeline;
a second line having a third end in communication with the second vessel and a fourth end in communication with the first line;
the second blowdown valve is arranged at the lower end of the gas compressor, the third blowdown valve is arranged at the lower end of the turbine, and the fourth blowdown valve is arranged at the lower end of the tail flue;
the control part is electrically connected with the first blowdown valve, the second blowdown valve, the third blowdown valve and the fourth blowdown valve; the control part comprises a control button for controlling the automatic starting and the skipping execution of the washing system;
the control method comprises the following steps:
judging whether a starting condition is met;
if yes, the water washing system is automatically started;
the washing system sequentially performs a clear water washing step, a detergent washing step, a soaking step, a clear water washing step and a spin-drying step;
after the spin-drying step is completed, the water washing system automatically stops;
after the washing system stops working because the washing system does not receive the feedback signal, artificially judging whether the feedback signal can be ignored;
and if the feedback signal can be ignored, pressing the control button to enable the water washing system to execute the next step.
5. The control method of the gas turbine compressor water washing system according to claim 4, wherein if the feedback signal cannot be ignored, a stop button is pressed to stop the water washing system; the shutdown step includes:
closing the water washing pump and the corresponding valve;
and when the second blow-down valve, the third blow-down valve and the fourth blow-down valve are drained, closing the combustion engine to enable the rotation speed of the combustion engine to be 0 rpm.
6. The control method of a water wash system for a gas turbine compressor according to claim 4, wherein the start-up conditions include: the engine lubrication oil system has been started, and the engine starter motor has been powered, and the engine has been shut down, and the fluid levels of the first and second reservoirs are normal.
7. The control method of the water washing system of the gas turbine compressor of claim 4, wherein the clean water washing step comprises:
opening the corresponding valve;
starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm;
starting a washing pump to flush the first pipeline, and discharging sewage for 1min through the first sewage discharge valve;
cleaning the compressor, the turbine and the tail flue for 5 min;
the water wash pump was turned off.
8. The control method of the water washing system of the gas turbine compressor of claim 4, wherein the detergent washing step and the soaking step comprise the following steps:
opening a flow regulating valve, starting a washing pump, and spraying the liquid mixed with the detergent to the gas compressor, the turbine and the tail flue;
the second blowdown valve, the third blowdown valve and the fourth blowdown valve discharge sewage, and when the liquid level of the second container is reduced to a preset value, the washing pump is closed and the corresponding valves are closed;
and closing the combustion engine and soaking the combustion engine for 40 min.
9. The control method of the water washing system of the gas turbine compressor of claim 4, wherein the clean water washing step comprises:
starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm;
starting a washing pump to wash the compressor, the turbine and the tail flue with clean water through the first pipeline;
and after the second blow-down valve, the third blow-down valve and the fourth blow-down valve discharge clean water, the combustion engine and the water washing pump are closed.
10. The control method of the water washing system of the compressor of the gas turbine as set forth in claim 4, wherein the spin-drying step comprises:
starting the combustion engine to enable the rotation speed of the combustion engine to reach 300 rpm;
opening an air inlet guide vane to reach 85 degrees, sucking air through the air compressor, and drying the air compressor, the turbine and the tail flue;
and when the second blowoff valve, the third blowoff valve and the fourth blowoff valve are drained, closing the combustion engine, the second blowoff valve, the third blowoff valve and the fourth blowoff valve.
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| CN202011416682.6A CN112412630A (en) | 2020-12-07 | 2020-12-07 | Gas turbine compressor water washing system and control method thereof |
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| CN202011416682.6A CN112412630A (en) | 2020-12-07 | 2020-12-07 | Gas turbine compressor water washing system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113153523A (en) * | 2021-04-02 | 2021-07-23 | 华能苏州热电有限责任公司 | Offline water washing control method and system for gas compressor |
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