CN104196768A - Method and system for controlling offline washing of compressor of combustion gas turbine - Google Patents
Method and system for controlling offline washing of compressor of combustion gas turbine Download PDFInfo
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- CN104196768A CN104196768A CN201410373404.5A CN201410373404A CN104196768A CN 104196768 A CN104196768 A CN 104196768A CN 201410373404 A CN201410373404 A CN 201410373404A CN 104196768 A CN104196768 A CN 104196768A
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- 238000005406 washing Methods 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000000567 combustion gas Substances 0.000 title abstract 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 136
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims description 65
- 239000007921 spray Substances 0.000 claims description 21
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 239000010797 grey water Substances 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000008236 heating water Substances 0.000 claims description 2
- 239000007844 bleaching agent Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 16
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000004087 circulation Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Classifications
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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
- F04D29/705—Adding liquids
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a method and system for controlling offline washing of a compressor of a combustion gas turbine. The method comprises the steps that the water temperature, the liquid level, the temperature between turbine wheels and the temperature of an inlet of the compressor are detected; whether the detection amount reaches the corresponding preset washing threshold values respectively or not is judged; if yes, the combustion gas turbine is started in a no-load mode until the rotating speed of the combustion gas turbine reaches the washing speed and the angles of guide vanes of the inlet of the compressor reach the maximum; if not, adjustment and detection are conducted again; the rotating speed of the combustion gas turbine is maintained to be unchanged, and clear water washing is conducted; the rotating speed of the combustion gas turbine is maintained to be unchanged to conduct first washing, a starting signal of the combustion gas turbine is cut off, and second washing is conducted; the combustion gas turbine is started again in the no-load mode until the rotating speed of the combustion gas turbine reaches the reset washing rotating speed; the rotating speed of the combustion gas turbine is maintained to be un changed, and bleach washing is conducted. According to the method and system for controlling offline washing of the compressor of the combustion gas turbine, the automatic control over the whole offline washing process is achieved, and comprehensive washing is conducted by setting the washing process with reduced rotating speeds.
Description
Technical field
The present invention relates to the water-washing technique field of gas turbine, be specifically related to a kind of gas compressor off-line washing controlling method and system of gas turbine.
Background technique
At present, due to worldwide energy shortage, more and more higher for the requirement of heavy duty gas turbine.High efficiency, low emission, the tail gas recycling of low combustion value becomes the trend of current combustion machine development.But for gas turbine, the dirt accumulation of gas compressor becomes very distinct issues.Efficiency, pressure ratio, flow that it can affect gas compressor, directly cause the power of combustion machine and the reduction of efficiency, and direct result is to cause the loss of the generated energy of combustion machine.Therefore, the dirt accumulation of gas compressor is problem demanding prompt solution in gas turbine operation.
Gas compressor washing adopts two kinds of methods conventionally: online washing and off-line are washed, and unit, in the time that full speed running approaches base load, sprays to gas compressor by water and cleans and be called online washing.The design difficulty of on-line cleaning is far longer than off-line and cleans, and reason is in on-line cleaning process will be in the face of the combustion machine in the middle of operation, and this may cause firing machine generation compressor surge or the phenomenon such as firing chamber is flame-out.So in most of situation, gas turbine blower is selected off-line washing.Off-line washing is that after compressor emergency shutdown, gas turbine moves in the cold mode of dragging, and adopts the mixing, washing liquid of wash water and water to wash thoroughly compressor blade.
Gas turbine-gas compressor is in off-line water-washing process, and can make the better washing of washing agent of nozzle ejection be a very important basis for estimation to the more surface of blade.Generally speaking, because the water droplet speed of ejection is higher, add the impact of axial flow, water droplet can be along axial motion.So like this be difficult to cover whole blade, cause cleaning not comprehensive.
Summary of the invention
The present invention has realized the automatic control of whole off-line water-washing process, and the cleaning process reducing by being provided with rotating speed, reaches comprehensive cleaning object.
For this purpose, the present invention proposes a kind of gas compressor off-line washing controlling method of gas turbine, described method comprises:
S1. detect the temperature of temperature between the turbine wheel of the water temperature of cistern device and liquid level, gas turbine wheel disk and compressor inlet;
Whether the temperature that S2. judges temperature between the turbine wheel of the water temperature of described cistern device and liquid level, gas turbine wheel disk and compressor inlet meets respectively corresponding default washing threshold value;
If meet, the gate positing benchmark of compressor inlet is made as to maximum value, No Load Start gas turbine, detect the rotating speed of gas turbine and the stator angle of compressor inlet, until the rotating speed of described gas turbine reaches default washing rotating speed, and the stator angle of described compressor inlet reaches the angle of described standard-sized sheet, execution step S3;
If do not meet, adjust the temperature of temperature between the turbine wheel of the water temperature of described cistern device and liquid level, gas turbine wheel disk and compressor inlet, return to step S1;
S3. the rotating speed of controlling described gas turbine remains unchanged, and carries out clear water flushing;
S4. after clear water rinses and finishes, the rotating speed of controlling described gas turbine remains unchanged and carries out the first washing cleaning, and after described the first washing cleaning finishes, disconnects the actuating signal of the gas turbine of no-load running, carries out the second washing cleaning;
S5. No Load Start gas turbine again, and detect the rotating speed of gas turbine until the rotating speed of described gas turbine reaches default washing rotating speed;
S6. the rotating speed of controlling described gas turbine remains unchanged, and carries out rinsing.
Further, between the turbine wheel of described detection gas turbine wheel disk, temperature specifically comprises:
Detect respectively the temperature in the turbine secondary, three grades of gas turbine and the chamber, front and back of level Four wheel disc;
From the described temperature detecting, choose maximum temperature, as temperature between the turbine wheel of gas turbine wheel disk.
Further, described step S3 comprises:
The default very first time;
Spray the clear water in described cistern device to described gas compressor, continue the described very first time.
Further, described step S4 comprises:
Default the second to the 7th time;
After step S3 completes, the second time described in interval, the clear water in described cistern device is mixed with wash water, obtain cleaning solution;
The rotating speed of controlling described gas turbine remains unchanged, and taking described the 3rd time as interval, continues for the 4th time at every turn, sprays described cleaning solution at least one times to described gas compressor;
Disconnect the actuating signal of the gas turbine of no-load running;
Turned by described washing in the process that is reduced to gradually zero at the rotating speed of described gas turbine, taking described the 5th time as interval, continued for the 6th time at every turn, spray described cleaning solution at least one times to described gas compressor;
After the rotating speed of described gas turbine reduces to zero, the 7th time of interval, the cleaning sullage of described gas compressor is drained.
Further, described step S6 comprises:
Default the 8th time and the 9th time;
Taking described the 8th time as interval, continued for the 9th time at every turn, spray the clear water in described cistern device at least one times to described gas compressor;
Disconnect the actuating signal of the gas turbine of no-load running;
Wherein, within described the 8th time at interval, described clear water is recycled to described cistern device, as spray use next time.
Further, after step S6 completes, described method also comprises:
No Load Start gas turbine, is dried.
Further, described method also comprises:
Detect in real time flow and the pressure of cistern device;
The flow alarming value of default described cistern device and the alarming value of pressure respectively;
Whether the pressure whether flow that judges described cistern device reaches described flow alarming value and/or described cistern device reaches described pressure alarm value;
If reach, stop current ongoing clear water flushing, the first washing cleaning, the second washing cleaning or rinsing;
If do not reach, proceed described clear water flushing, the first washing cleaning, the second washing cleaning or rinsing.
The gas compressor off-line washing control system that the invention allows for a kind of gas compressor off-line washing controlling method that is applied to gas turbine, described system comprises: data acquisition unit, controller, start and stop device and the cistern device being connected with the gas compressor of gas turbine by pipeline;
Described controller is electrically connected with described data acquisition unit, start and stop device and cistern device respectively;
Testing signal is transferred to described controller by described data acquisition unit, described controller is according to described testing signal, control cistern device and provide clear water and the wash water in gas compressor off-line water-washing process by described pipeline, and control described start and stop device the no-load running of gas turbine is carried out to start and stop.
Further, described data acquisition unit comprises:
The first temperature transducer, for detection of the water temperature of described cistern device;
The second temperature transducer, for detection of the temperature of compressor inlet;
Three-temperature sensor, for detection of the temperature of gas turbine wheel disk;
Liquid level sensor, for detection of the liquid level of described cistern device;
Angle transducer, for detection of the stator angle of compressor inlet;
Flow transducer, for detection of the flow of described cistern device;
Pressure transducer, for detection of the pressure of described cistern device;
Speed probe, for detection of the rotating speed of gas turbine.
Further, described cistern device comprise be equipped with clear water the first water tank, the second water tank of wash water is housed, the water pump that is connected respectively with described the first water tank and the second water tank by pipeline, for the heater to the first water tank and the second heating water tanks, be installed on described pipeline, for controlling the first control valve that described wash water and described clear water mix, for controlling the second control valve that described cleaning solution reclaims, for controlling that described clear water and described cleaning solution enter the 3rd control valve of gas compressor and for controlling the 4th control valve of cleaning sullage discharge of gas compressor.
Gas compressor off-line washing controlling method and the system of a kind of gas turbine proposing by employing the present invention, realized the automatic control of whole off-line water-washing process, and system has realized pre-diagnostic function.Washing agent clean process in be provided with the cleaning process that rotating speed reduces, make cleaning solution can cover the surface of compressor blade, gas compressor is comprehensively cleaned, there is good economy performance, move simple and easy to operate.
Brief description of the drawings
Can more clearly understand the features and advantages of the present invention by reference to accompanying drawing, accompanying drawing is schematically to should not be construed as the present invention is carried out to any restriction, in the accompanying drawings:
Fig. 1 shows a kind of gas compressor off-line washing controlling method schematic flow sheet of gas turbine;
Fig. 2 shows a kind of gas compressor off-line washing control system structural representation of gas turbine;
Fig. 3 shows a kind of concrete structure schematic diagram of gas compressor off-line washing control system of gas turbine;
Fig. 4 shows the gas compressor off-line washing controlling method schematic flow sheet of the gas turbine in practical application;
In accompanying drawing: 1, flow transducer, 2, the first temperature transducer, 3, speed probe, 4, the second temperature transducer, 5, three-temperature sensor, 6, controller, 7, the first water tank, 8, water pump, 9, the second water tank, 10, gas turbine, 11, the 4th control valve, 12, the 3rd control valve, 13, start and stop device, 14, angle transducer, 15, the first control valve, 16, heater, 17, the second control valve, 18, pressure transducer, 19, liquid level sensor.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
The embodiment of the present invention has proposed a kind of gas compressor off-line washing controlling method of gas turbine, and as shown in Figure 1, described in this, method comprises:
S1. detect the temperature of temperature between the turbine wheel of the water temperature of cistern device and liquid level, gas turbine wheel disk and compressor inlet.
Particularly, between the turbine wheel of described detection gas turbine wheel disk, temperature specifically comprises:
Detect respectively the temperature in the turbine secondary, three grades of gas turbine and the chamber, front and back of level Four wheel disc;
From the described temperature detecting, choose maximum temperature, as temperature between the turbine wheel of described gas turbine wheel disk.
S2. judge whether the water temperature of described cistern device and the temperature of liquid level and compressor inlet meet respectively corresponding default washing threshold value;
If meet, the gate positing benchmark of compressor inlet is made as to maximum value, No Load Start gas turbine, detect the rotating speed of gas turbine and the stator angle of compressor inlet, until the rotating speed of described gas turbine reaches default washing rotating speed, and the stator angle of described compressor inlet reaches the angle of described standard-sized sheet, execution step S3;
If do not meet, adjust the temperature of temperature between the turbine wheel of the water temperature of described cistern device and liquid level, gas turbine wheel disk and compressor inlet, return to step S1;
In the embodiment of the present invention, washing rotating speed can be set as gas turbine operation zero load rated speed 25%.In the time detecting the rotating speed of gas turbine rotor, arrange respectively three and detect sampled point, detect the rotating speed of three samplings, get the rotating speed of intermediate value as gas turbine, divided by the rated speed of above-mentioned gas turbine operation zero load, thereby obtain rotating speed percentage, can step S2's until the rotating speed of gas turbine reach in default washing rotating speed, judge whether rotating speed percentage reaches 25% of rated speed, thereby whether the rotating speed of determining gas turbine reaches default washing rotating speed.
Wherein, the stator of the compressor inlet of setting gas turbine is to the position of standard-sized sheet angle, and after No Load Start gas turbine, the stator angle of compressor inlet is adjusted to standard-sized sheet angle gradually, makes stator standard-sized sheet.Now, need to detect stator angle, guarantee that stator angle reaches the angle of standard-sized sheet, make cleaning efficiency reach maximum.
Wherein, in order to make the washing of gas compressor off-line safer and stable, preferably, washing threshold value corresponding to water temperature that can set cistern device is 85 degree, the washing threshold value corresponding to liquid level of cistern device is 3/4 of the total liquid level of cistern device, between turbine wheel, washing threshold value corresponding to temperature is 95 degree, and the washing threshold value corresponding to stator angle of compressor inlet is standard-sized sheet angle, and the temperature of compressor inlet is 4 degree.
According to the above-mentioned content that arranges, when the water temperature that meets cistern device higher than the liquid level of 85 degree and cistern device higher than the stator angle of 3/4 and compressor inlet of total liquid level be the temperature of standard-sized sheet angle and compressor inlet higher than 4 time and between turbine wheel temperature lower than 95 degree, start clear water and rinse.When wherein one or more discontented above-mentioned conditions corresponding with it, can, according to not meeting content, improve the water temperature of cistern device by heater; Increase the liquid level of cistern device by moisturizing; By gas turbine is lowered the temperature, the temperature of temperature and compressor inlet between reduction turbine wheel; Change environment, improve the temperature of compressor inlet; Make detection limit in step S1 arrive respectively default washing threshold value (adjusting the temperature of temperature between the turbine wheel of the water temperature of described cistern device and liquid level, gas turbine wheel disk and compressor inlet).
S3. the rotating speed of controlling described gas turbine remains unchanged, and carries out clear water flushing.
Particularly, described step S3 comprises:
The default very first time;
Spray the clear water in described cistern device to described gas compressor, continue the described very first time.
In the embodiment of the present invention, in order to improve the gas compressor off-line washing efficiency of gas turbine, the very first time can be set as 60 seconds.
S4. after clear water rinses and finishes, the rotating speed of controlling described gas turbine remains unchanged and carries out the first washing cleaning, and after described the first washing cleaning finishes, disconnects the actuating signal of the gas turbine of no-load running, carries out the second washing cleaning.
Particularly, described step S4 comprises:
Default the second to the 7th time;
After step S3 completes, the second time described in interval, the clear water in described cistern device is mixed with wash water, obtain cleaning solution;
The rotating speed of controlling described gas turbine remains unchanged, and taking described the 3rd time as interval, continues for the 4th time at every turn, sprays described cleaning solution at least one times to described gas compressor;
Disconnect the actuating signal of the gas turbine of no-load running;
Turned by described washing in the process that is reduced to gradually zero at the rotating speed of described gas turbine, taking described the 5th time as interval, continued for the 6th time at every turn, spray described cleaning solution at least one times to described gas compressor;
After the rotating speed of described gas turbine reduces to zero, the 7th time of interval, the cleaning sullage of described gas compressor is drained.
In the embodiment of the present invention, in order to make the gas compressor off-line of gas turbine wash more stable and improve washing efficiency, can set: the second time was 4 minutes, the 3rd time was 4 minutes, and the 4th time was 60 seconds, and the 5th time was 2 minutes, the 6th time was 60 seconds, and the 7th time was 20 minutes.
S5. No Load Start gas turbine again, and detect the rotating speed of gas turbine until the rotating speed of described gas turbine reaches default washing rotating speed.
S6. the rotating speed of controlling described gas turbine remains unchanged, and carries out rinsing.
Particularly, described step S5 comprises:
Default the 8th time and the 9th time;
Taking described the 8th time as interval, continued for the 9th time at every turn, spray the clear water in described cistern device at least one times to described gas compressor;
Disconnect the actuating signal of the gas turbine of no-load running;
Wherein, within described the 8th time at interval, described clear water is recycled to described cistern device, as spray use next time.
In the embodiment of the present invention, in order to make the gas compressor off-line of gas turbine wash more stable and improve washing efficiency, can set for the 8th time is 5 minutes, and the 9th time was 60 seconds.
Preferably, the gas compressor off-line of gas turbine washing controlling method also comprises:
No Load Start gas turbine, is dried.
In the embodiment of the present invention, more abundant for what the gas compressor of gas turbine was dried, can set time of drying is 30 minutes.No Load Start gas turbine, and detect gas turbine rotating speed until the rotating speed of gas turbine reach after default washing rotating speed, dry 30 minutes.
Preferably, the gas compressor off-line of gas turbine washing controlling method also comprises:
Detect in real time flow and the pressure of cistern device water pump;
The flow alarming value of default described cistern device water pump and the alarming value of pressure respectively;
Whether the pressure whether flow that judges described cistern device water pump reaches described flow alarming value and/or described cistern device water pump reaches described pressure alarm value;
If reach, stop current ongoing clear water flushing, the first washing cleaning, the second washing cleaning or rinsing;
If do not reach, proceed described clear water flushing, the first washing cleaning, the second washing cleaning or rinsing.
The embodiment of the present invention has also proposed a kind of gas compressor off-line washing control system of the gas compressor off-line washing controlling method that is applied to gas turbine, as shown in Figure 2, this system comprises: data acquisition unit 104, controller 101, start and stop device 102 and the cistern device 103 being connected with the gas compressor of gas turbine 105 by pipeline;
Described controller is electrically connected with described data acquisition unit 104, start and stop device 102 and cistern device 103 respectively;
Testing signal is transferred to described controller 101 by described data acquisition unit 104, described controller 101 is according to described testing signal, control water tank and fill 103 and put by described pipeline clear water and the wash water in gas compressor off-line water-washing process is provided, and control described start and stop device 102 no-load running of gas turbine 105 is carried out to start and stop.
Wherein, can Configuration Online and expansivity for the gas compressor off-line washing control system of gas turbine is had, and there is the advantages such as two redundancies, employing NT6000 decentralized control system.The main DPU of NT6000 decentralized control system realizes control algorithm and comprises: off-line washing process and realize fault pre-diagnosing function.IO board carries out the output of input signal collection and control signal relay, and DPU carries out communication with IO board employing data/address bus, and IO board can Configuration Online, comprises frequency quantity input card, thermocouple input card, analog input card, relay output board card.Core controller 6 in NT6000 decentralized control system adopts KM231A, as the controller 6 in the embodiment of the present invention, configure 5 IO fasteners, comprise 8 channel frequence amount inputting modular unit KM237A, 8 tunnels analogy amount inputting modular unit KM231A, two 8 path thermocouple inputting modular unit KM233A, 8 passage relay output module KM235A.
Preferably, as shown in Figure 3, described data acquisition unit comprises:
The first temperature transducer 2, for detection of the water temperature of described cistern device;
The second temperature transducer 4, for detection of the temperature of compressor inlet;
Three-temperature sensor 5, for detection of the temperature of gas turbine wheel disk;
Liquid level sensor 19, for detection of the liquid level of described cistern device;
Angle transducer 14, for detection of the stator angle of compressor inlet;
Flow transducer 1, for detection of the flow of described cistern device;
Pressure transducer 18, for detection of the pressure of described cistern device;
Speed probe 3, for detection of the rotating speed of gas turbine.
Wherein, angle transducer 14 is preferably LVDT (linear variable differential transmitter), and the second temperature transducer 5 is preferably thermocouple.
Preferably, as shown in Figure 3, described cistern device comprises: the first water tank 7 that clear water is housed, the second water tank of wash water is housed, the water pump 8 being connected respectively with described the first water tank 7 and the second water tank 9 by pipeline, for the heater 16 that the first water tank 7 and the second water tank 9 are heated, be installed on described pipeline, the first control valve 15 mixing for controlling described wash water and described clear water, the second control valve 17 reclaiming for controlling described cleaning solution, the 4th control valve 11 that enters the 3rd control valve 12 of gas compressor and discharge for controlling the cleaning sullage of gas compressor for controlling described clear water and described cleaning solution.
Below in conjunction with practical application, the present invention is described in detail.
As shown in Figure 3, three speed probes 3 for detection of gas turbine rotary speed are installed on gas turbine rotor, the frequency quantity inputting modular unit KM237A that receives controller 6, controller 6 is got the intermediate value of rotating speed as gas turbine rotary speed, obtains rotating speed percentage divided by rated speed; On compressor inlet guide leaf system system oil engine, two LVDT transmitters for detection of compressor inlet stator angle (linear variable differential transmitter) are installed, receive controller 6 analog input module KM231A, controller 6 is got the checkout value of high value as compressor inlet stator angle; Before and after turbine two, three, level Four wheel disc, chamber is each arranges two temperature thermocouples, totally ten two temperature thermocouples, as temperature transducer between wheel, receive the controller 6 electric thermo-couple inputting modular unit KM233A of off-line washing, get the checkout value of peak as temperature between turbine wheel; At water washing device module water pump 8 part setting pressure tables, flowmeter, monitoring water pump 8 running statees, receive off-line washing controller 6 analog input module KM231A; The first water tank 7 of clear water is housed; The second water tank 9 of wash water is housed; For the heater 16 that the first water tank 7 and the second water tank 9 are heated; Be installed on described pipeline the first control valve 15 mixing for controlling described wash water and described clear water; The second control valve 17 reclaiming for controlling described cleaning solution; Enter the 3rd control valve 12 of described gas compressor for controlling described clear water and described cleaning solution; The 4th control valve 11 discharging for controlling the cleaning sullage of gas compressor, receives controller 6 analog input module KM231A; The heater 16 of the first water tank 7, the heater 16 of the second water tank 9, the first control valve 15 mixing for controlling described wash water and described clear water; The second control valve 17 reclaiming for controlling described cleaning solution; Enter the 3rd control valve 12 of described gas compressor for controlling described clear water and described cleaning solution; The 4th control valve 11 discharging for controlling the cleaning sullage of gas compressor, receives off-line washing relay output module KM235A by corresponding relay.
Fig. 4 is that the gas compressor off-line of the gas turbine in practical application is washed controlling method schematic flow sheet, as shown in Figure 4, comprising: off-line is washed permission, clear water flushing is soaked, added washing agent cleaning, immersion 20 minutes, rinsing and off-line and washes end.Specific as follows:
Press off-line washing start button, select to increase extra rinsing pattern.Controller 6 starts to gather each tunnels analogy amount, and the temperature of the water tank detecting when the first temperature transducer 2 during lower than 85 DEG C, starts water tank electric heater 16 automatically.When being less than or equal to 4 DEG C, the temperature of the compressor inlet detecting by the second temperature transducer 4 forbids off-line washing, the liquid level of the water tank detecting by liquid level sensor 19 requires to be greater than 3/4, between the turbine wheel detecting by three-temperature sensor 5, temperature is no more than 95 DEG C, sends and allow off-line washing signal when above condition all meets.
Receive that while allowing off-line washing signal, primer fluid oil-pressing pump, for other system provides power oil.Compressor inlet stator position reference is made as maximum value, and start and stop device 13 sends actuating signal to gas turbine 10 again, and gas turbine rotary speed is made as 25% rated speed.
When LVDT detects (angle transducer 14) to compressor inlet stator standard-sized sheet, and the gas turbine rotary speed that speed probe 3 detects reaches washing rotating speed while requiring, allowing to carry out the off-line washing first step-clear water rinses: now water pump 8 starts automatically, the 3rd control valve 12 is opened, controller 6 sends cleaning pulse, control water pump 8 clear water in the first water tank 7 is delivered to clear water to the gas compressor in gas turbine 10, spray 60 seconds, off-line washing clear water sprays and finishes, and clear water has rinsed.
Carrying out the first washing cleaning and the second washing cleans:
Time delay 4 minutes, the first control valve 15 is opened, and clear water mixes with wash water, and gas turbine rotary speed is when reaching off-line washing and allowing rotating speed, starts to add wash water and cleans.When the first washing is cleaned, controller 6 sends altogether 8 times and cleans pulse, and in front cleaning for 6 times, the rotating speed of gas engine all remains on washing rotating speed, continuous 6 subpulse circulations, and each pulse persistance 60 seconds, has 4 minute interval time between pulse; Start and stop device 13 is thrown off afterwards, sends stopping signal to combustion aircraft turbine engine, and gas turbine rotary speed starts to decline, and the 7th time jet cleaning liquid is after the 6th injection finishes, and interval starts to spray for 3 minutes, continues 60 seconds.The 8th time jet cleaning liquid is after the 7th injection finishes, and 2 minutes, interval, starts to spray, until near zero rotating speed of gas turbine rotary speed.Soak after 20 minutes, automatically open the 4th control valve 11, cleaning sullage is drained.
Carry out rinsing and dry:
Start and stop device 13 sends actuating signal to gas turbine 10 again, and gas turbine rotary speed is brought to washing rotating speed, starts rinsing.Continuous 30 subpulse circulations when rinsing, each pulse persistance 60 seconds, has 5 minute interval time between pulse.Rinsing finishes, and increases extra rinsing according to preference pattern, continuous 5 subpulse circulations when extra rinsing, and each pulse persistance 60 seconds, has 5 minute interval time between pulse.In the time of rinsing, in the interval time that each clear water sprays, the second control valve 17 is opened, and water circulation, to water tank, is recycled.Off-line has been washed, and combustion machine rotating speed rises to washing rotating speed, dry 30 minutes.
In said process, when flow transducer 1 detects the flow of cistern device and/or the pressure of the cistern device that pressure transducer 18 detects and reaches default alarming value, stop that current ongoing clear water rinses, the first washing is cleaned, the second washing is cleaned or rinsing.
Gas compressor off-line washing controlling method and the system of a kind of gas turbine that the embodiment of the present invention proposes, realized the automatic control of whole off-line water-washing process, and system has realized pre-diagnostic function.In the process of cleaning at washing agent, be provided with the cleaning process that rotating speed reduces, the change procedure of rotating speed falls, to reach the variation of radial force on compressor blade, make water droplet produce radial motion, thereby can better cover the surface of compressor blade, gas compressor is comprehensively cleaned, there is good economy performance, move simple and easy to operate.
Although described by reference to the accompanying drawings embodiments of the present invention, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such amendment and modification all fall into by within claims limited range.
Claims (10)
1. the gas compressor off-line of a gas turbine washing controlling method, is characterized in that, described method comprises:
S1. detect the temperature of temperature between the turbine wheel of the water temperature of cistern device and liquid level, gas turbine wheel disk and compressor inlet;
Whether the temperature that S2. judges temperature between the turbine wheel of the water temperature of described cistern device and liquid level, gas turbine wheel disk and compressor inlet meets respectively corresponding default washing threshold value;
If meet, the gate positing benchmark of compressor inlet is made as to maximum value, No Load Start gas turbine, detect the rotating speed of gas turbine and the stator angle of compressor inlet, until the rotating speed of described gas turbine reaches default washing rotating speed, and the stator angle of described compressor inlet reaches the angle of described standard-sized sheet, execution step S3;
If do not meet, adjust the temperature of temperature between the turbine wheel of the water temperature of described cistern device and liquid level, gas turbine wheel disk and compressor inlet, return to step S1;
S3. the rotating speed of controlling described gas turbine remains unchanged, and carries out clear water flushing;
S4. after clear water rinses and finishes, the rotating speed of controlling described gas turbine remains unchanged and carries out the first washing cleaning, and after described the first washing cleaning finishes, disconnects the actuating signal of the gas turbine of no-load running, carries out the second washing cleaning;
S5. No Load Start gas turbine again, and detect the rotating speed of gas turbine until the rotating speed of described gas turbine reaches default washing rotating speed;
S6. the rotating speed of controlling described gas turbine remains unchanged, and carries out rinsing.
2. method according to claim 1, is characterized in that, between the turbine wheel of described detection gas turbine wheel disk, temperature specifically comprises:
Detect respectively the temperature in the turbine secondary, three grades of gas turbine and the chamber, front and back of level Four wheel disc;
From the described temperature detecting, choose maximum temperature, as temperature between the turbine wheel of gas turbine wheel disk.
3. method according to claim 1, is characterized in that, described step S3 comprises:
The default very first time;
Spray the clear water in described cistern device to described gas compressor, continue the described very first time.
4. method according to claim 1, is characterized in that, described step S4 comprises:
Default the second to the 7th time;
After step S3 completes, the second time described in interval, the clear water in described cistern device is mixed with wash water, obtain cleaning solution;
The rotating speed of controlling described gas turbine remains unchanged, and taking described the 3rd time as interval, continues for the 4th time at every turn, sprays described cleaning solution at least one times to described gas compressor;
Disconnect the actuating signal of the gas turbine of no-load running;
Turned by described washing in the process that is reduced to gradually zero at the rotating speed of described gas turbine, taking described the 5th time as interval, continued for the 6th time at every turn, spray described cleaning solution at least one times to described gas compressor;
After the rotating speed of described gas turbine reduces to zero, the 7th time of interval, the cleaning sullage of described gas compressor is drained.
5. method according to claim 1, is characterized in that, described step S6 comprises:
Default the 8th time and the 9th time;
Taking described the 8th time as interval, continued for the 9th time at every turn, spray the clear water in described cistern device at least one times to described gas compressor;
Disconnect the actuating signal of the gas turbine of no-load running;
Wherein, within described the 8th time at interval, described clear water is recycled to described cistern device, as spray use next time.
6. method according to claim 5, is characterized in that, after step S6 completes, described method also comprises:
No Load Start gas turbine, is dried.
7. method according to claim 1, is characterized in that, described method also comprises:
Detect in real time flow and the pressure of cistern device;
The flow alarming value of default described cistern device and the alarming value of pressure respectively;
Whether the pressure whether flow that judges described cistern device reaches described flow alarming value and/or described cistern device reaches described pressure alarm value;
If reach, stop current ongoing clear water flushing, the first washing cleaning, the second washing cleaning or rinsing;
If do not reach, proceed described clear water flushing, the first washing cleaning, the second washing cleaning or rinsing.
8. one kind is applied to the gas compressor off-line washing control system of the gas turbine of method described in claim 1 to 7 any one, it is characterized in that, described system comprises: data acquisition unit, controller, start and stop device and the cistern device being connected with the gas compressor of gas turbine by pipeline;
Described controller is electrically connected with described data acquisition unit, start and stop device and cistern device respectively;
Testing signal is transferred to described controller by described data acquisition unit, described controller is according to described testing signal, control cistern device and provide clear water and the wash water in gas compressor off-line water-washing process by described pipeline, and control described start and stop device the no-load running of gas turbine is carried out to start and stop.
9. method according to claim 8, is characterized in that, described data acquisition unit comprises:
The first temperature transducer, for detection of the water temperature of described cistern device;
The second temperature transducer, for detection of the temperature of compressor inlet;
Three-temperature sensor, for detection of the temperature of gas turbine wheel disk;
Liquid level sensor, for detection of the liquid level of described cistern device;
Angle transducer, for detection of the stator angle of compressor inlet;
Flow transducer, for detection of the flow of described cistern device;
Pressure transducer, for detection of the pressure of described cistern device;
Speed probe, for detection of the rotating speed of gas turbine.
10. method according to claim 8, it is characterized in that, described cistern device comprises the first water tank that clear water is housed, the second water tank of wash water is housed, the water pump being connected respectively with described the first water tank and the second water tank by pipeline, for the heater to the first water tank and the second heating water tanks, be installed on described pipeline, the first control valve mixing for controlling described wash water and described clear water, the second control valve reclaiming for controlling described cleaning solution, the 4th control valve that enters the 3rd control valve of gas compressor and discharge for controlling the cleaning sullage of gas compressor for controlling described clear water and described cleaning solution.
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| CN108993984A (en) * | 2018-09-30 | 2018-12-14 | 天津华电北宸分布式能源有限公司 | A kind of combustion engine compressor washing equipment and method |
| CN109058547A (en) * | 2018-08-13 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of solenoid valve and its control method and water purifier with mudhole cleaning device |
| CN110307186A (en) * | 2019-07-03 | 2019-10-08 | 上海长庚信息技术股份有限公司 | Predict method, apparatus, server and the storage medium of compressor washing time |
| CN110513336A (en) * | 2019-09-05 | 2019-11-29 | 哈尔滨电气股份有限公司 | A kind of determination method of power station gas turbine off-line washing time |
| CN111894912A (en) * | 2020-08-07 | 2020-11-06 | 广州珠江天然气发电有限公司 | Off-line washing method for compressor of gas turbine combined cycle unit |
| 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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| CN110513336A (en) * | 2019-09-05 | 2019-11-29 | 哈尔滨电气股份有限公司 | A kind of determination method of power station gas turbine off-line washing time |
| CN111894912A (en) * | 2020-08-07 | 2020-11-06 | 广州珠江天然气发电有限公司 | Off-line washing method for compressor of gas turbine combined cycle unit |
| 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 |
| CN113153523B (en) * | 2021-04-02 | 2021-12-10 | 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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