CN108825385B - gas turbine and method for cleaning same - Google Patents
gas turbine and method for cleaning same Download PDFInfo
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- CN108825385B CN108825385B CN201810501698.3A CN201810501698A CN108825385B CN 108825385 B CN108825385 B CN 108825385B CN 201810501698 A CN201810501698 A CN 201810501698A CN 108825385 B CN108825385 B CN 108825385B
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- blades
- gas turbine
- temperature
- cleaning
- liquid
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
Abstract
The invention discloses a gas turbine and a cleaning method thereof, wherein the cleaning method of the gas turbine comprises the following steps: after the blades are cleaned, the blades are cold-operated according to a first preset rotating speed, and the moisture discharge amount of a sewage outlet is detected; and when the moisture discharge amount at the sewage draining port reaches a preset standard, closing the sewage draining port, starting an ignition system, and accelerating the blades to a second preset rotating speed for warming. According to the gas turbine and the cleaning method thereof, the blades are rotated in a cold mode for spin-drying according to the first preset rotating speed, and the blades are rotated in a speed increasing mode to the second preset rotating speed for warm-up drying, so that moisture can be effectively prevented from remaining in the gas turbine, and the gas turbine equipment is prevented from being damaged by the moisture.
Description
Technical Field
the invention relates to the technical field of equipment cleaning, in particular to a gas turbine and a cleaning method thereof.
background
A large amount of air can be sucked in the working process of the gas turbine, and because the air contains dry pollutants such as dust and wet pollutants such as oil and the like, the inside of the unit can also generate the wet pollutants such as oil and the like, and after the working time is too long, the pollutants can be gradually deposited on the blades of the gas compressor, so that the working efficiency of the gas turbine is influenced.
The traditional method is to design a cleaning flow for the gas turbine, and eliminate pollutants attached to the blades of the gas compressor through regular cleaning, and the traditional method is to easily make water remain in the gas turbine after the gas turbine is cleaned, so that the problems of corrosion, moisture of an ignition system and the like in the gas turbine are caused, and the normal work of the gas turbine is not facilitated.
Disclosure of Invention
accordingly, there is a need for a gas turbine and a method for washing the same that can effectively prevent water from remaining in the gas turbine after washing.
The technical scheme is as follows:
A method of cleaning a gas turbine, comprising the steps of: after the blades are cleaned, the blades are cold-operated according to a first preset rotating speed, and the moisture discharge amount of a sewage outlet is detected; and when the moisture discharge amount at the sewage draining port reaches a preset standard, closing the sewage draining port, starting an ignition system, accelerating the blades to a second preset rotating speed for warm-up operation, and drying moisture remained in the gas turbine.
After the blades of the compressor of the gas turbine are cleaned, the blades are subjected to cold operation according to a first preset rotating speed, so that cleaning liquid and pollutants remained on the blades are thrown out and the blades are further dried, meanwhile, wind generated by the rotation of the blades can blow each part in the equipment, the thrown-out cleaning liquid and pollutants are discharged through a sewage discharge outlet, the moisture discharge amount at the sewage discharge outlet is detected in real time, the drying condition of the blades is obtained, if the moisture discharge amount is detected to be lower than a preset standard, the blades are continuously subjected to cold operation drying according to the first preset rotating speed until reaching the standard, when the moisture discharge amount at the sewage discharge outlet is detected to reach the preset standard, the drying condition is judged to reach the standard, the sewage discharge outlet is closed when the moisture discharge amount reaches the preset standard, an ignition system is started, the blades are accelerated to a second preset rotating speed for warm operation, thereby further drying the moisture remaining in the gas turbine. According to the gas turbine cleaning method, after blades of the air compressor are cleaned, residual water on the blades is thrown out and is dried through cold running of the blades, the blades are accelerated to warm running through starting of the ignition system, the residual water in the gas turbine is further dried, the residual water can be effectively prevented from being residual in the gas turbine, and the problems that the residual water after cleaning causes corrosion in the gas turbine, the ignition system is affected with damp and the like are avoided.
The technical solution is further explained below:
In one embodiment, the step of detecting the moisture discharge amount of the drain includes: and detecting the moisture content of the air flowing through the sewage draining outlet, and judging that the moisture discharging amount at the sewage draining outlet reaches a preset standard when the moisture content in the air is detected to be lower than or equal to a first preset value.
In one embodiment, before the step of cleaning the blade, the method further comprises the step of cleaning the blade: stopping an air extraction pipeline between the gas turbine and the gas compressor; and opening the sewage draining outlet, accelerating the blade to a third preset rotating speed, and spraying cleaning liquid by the cleaning device to clean the blade.
In one embodiment, before the step of cleaning the blade, the method further comprises: and detecting the temperature between two adjacent blades, and if the temperature between two adjacent blades is lower than or equal to a first preset temperature, cleaning the blades.
In one embodiment, before the step of spraying the cleaning solution by the cleaning device to clean the blade, the method further comprises the following steps: heating the cleaning liquid, and detecting the temperature of the cleaning liquid; and when the temperature of the cleaning liquid is detected to be higher than or equal to a second preset temperature, the cleaning liquid is stopped being heated, and the cleaning device sprays the cleaning liquid to clean the blade.
In one embodiment, after the step of spraying the cleaning liquid by the cleaning device to clean the blade and before the step of completing the blade cleaning, the method further comprises: and stopping the rotation of the blade, and standing the blade according to a first preset time period.
In one embodiment, after the step of stopping the rotation of the blade and leaving the blade stationary for the first preset time period, and before the step of completing the cleaning of the blade, the method further includes: the blades are accelerated to a fourth preset rotating speed, and the cleaning device sprays rinsing liquid to rinse the blades; detecting the conductivity of the liquid flowing out of the sewage discharge port; when the conductivity of the liquid is detected to be lower than or equal to a second preset value, the cleaning device stops spraying the rinsing liquid; when the conductivity of the liquid is detected to be higher than the second preset value, the blades are continuously rinsed.
In one embodiment, before the step of rinsing the blade by spraying the rinsing liquid by the cleaning device, the method further comprises the following steps: heating the rinsing liquid, and detecting the temperature of the rinsing liquid; and when the temperature of the rinsing liquid is detected to be higher than or equal to a third preset temperature, the rinsing liquid is stopped being heated, and the cleaning device sprays the rinsing liquid to rinse the blades.
In one embodiment, after the step of starting the ignition system and before the step of warming up the blades to the second preset rotation speed, the method further comprises the steps of: the air extraction pipeline between the gas turbine and the compressor is communicated.
A gas turbine engine, comprising: a compressor; the gas turbine is rotationally connected with the gas compressor; the detecting device comprises a rotating speed sensor for detecting the rotating speed of blades of the air compressor, a moisture sensor for detecting the moisture content of air flowing through a sewage draining outlet, a first temperature sensor for detecting the temperature between adjacent blades of the air compressor, a second temperature sensor for detecting the temperature of cleaning liquid, an electric conductivity sensor for detecting the electric conductivity of liquid flowing out of the sewage draining outlet and a third temperature sensor for detecting the temperature of rinsing liquid; and the control device is electrically connected with the rotating speed sensor, the moisture sensor, the first temperature sensor, the second temperature sensor, the conductivity sensor and the third temperature sensor.
The gas turbine comprises a gas compressor, a gas turbine, a detection device and a control device, wherein the gas compressor is rotationally connected with the gas turbine so as to realize the transmission of power; the moisture sensor detects the moisture content of the air flowing through the sewage draining exit and transmits a corresponding signal to the control device, and the opening and closing of the sewage draining exit are realized through the control device; the first temperature sensor detects the temperature between adjacent blades of the compressor and transmits corresponding temperature signals to the control device, and the control device judges whether the conditions for cleaning the compressor are met; the second temperature sensor detects the temperature of the cleaning liquid and transmits a corresponding temperature signal to the control device, and the control device judges whether the temperature of the cleaning liquid reaches the standard or not; the conductivity sensor detects the conductivity of the liquid flowing out of the sewage draining port and transmits a corresponding temperature signal to the control device, and the control device judges whether the rinsing reaches the standard; the third temperature sensor detects the temperature of the rinsing liquid and transmits a corresponding temperature signal to the control device, and the control device judges whether the temperature of the rinsing liquid reaches the standard or not. Detect corresponding parameter and with detected signal transmission to controlling means through detection device, respond by the corresponding part of controlling means control, can effectually prevent that moisture from remaining inside gas turbine, avoid wasing the inside corrosion of taking place of remaining moisture messenger gas turbine, ignition system and wet scheduling problem after the washing.
Drawings
FIG. 1 is a flow diagram of a gas turbine engine washing method of an embodiment;
FIG. 2 is a schematic view of an embodiment of a gas turbine.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
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 "secured" to another element, it can be removably secured or non-removably secured to the other element. 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 also 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first," "second," "third," and the like in the description herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
referring to fig. 1, a method for cleaning a gas turbine according to an embodiment of the present invention includes the steps of: after the blades are cleaned, the blades are cold-operated according to a first preset rotating speed, and the moisture discharge amount of a sewage outlet is detected; and when the moisture discharge amount at the sewage draining port reaches a preset standard, closing the sewage draining port, starting an ignition system, accelerating the blades to a second preset rotating speed for warm-up operation, and drying moisture remained in the gas turbine.
the gas turbine cleaning method of the above embodiment, after cleaning the blades of the compressor of the gas turbine, the blades are cold-operated according to a first preset rotation speed, so that the cleaning liquid and the pollutants remained on the blades are thrown out and the blades are further dried, meanwhile, the wind generated by the rotation of the blades can also dry each part in the device, the thrown-out cleaning liquid and pollutants are discharged through the sewage discharge outlet, the water discharge amount at the sewage discharge outlet is detected in real time, thereby obtaining the drying condition of the blades, if the water discharge amount is detected to be not reach the preset standard, the blades are continuously cold-operated and dried according to the first preset rotation speed until reaching the standard, when the water discharge amount at the sewage discharge outlet is detected to reach the preset standard, the drying is judged to reach the standard, the sewage discharge outlet is closed when the water discharge amount reaches the preset standard, the ignition system is started, and the blades are accelerated to a second preset rotating speed for warm-up operation, so that the moisture remained in the gas turbine is further dried. According to the gas turbine cleaning method, after blades of the air compressor are cleaned, residual water on the blades is thrown out and is dried through cold running of the blades, the blades are accelerated to warm running through starting of the ignition system, the residual water in the gas turbine is further dried, the residual water can be effectively prevented from being residual in the gas turbine, and the problems that the residual water after cleaning causes corrosion in the gas turbine, the ignition system is affected with damp and the like are avoided.
It should be noted that the first preset rotation speed and the second preset rotation speed can be selected according to actual requirements, and only the requirement that the blades can spin-dry and blow-dry the moisture remaining on the blades when the blades are in cold operation at the first preset rotation speed is met, and the blades can warm-dry the moisture remaining in the gas engine when the blades are in operation at the second preset rotation speed, for example, in one embodiment, the first preset rotation speed is 3000rpm to 3300rpm, and the second preset rotation speed is not less than 11000 rpm; the moisture discharge amount refers to the content of moisture in the air or liquid discharged from the sewage discharge outlet; the closing of the drain and the starting of the ignition system can be carried out simultaneously, the ignition system can also be started after the drain is closed, and the drain can also be closed after the ignition system is started.
As shown in fig. 1, the step of detecting the moisture discharge amount of the drain may alternatively include: and detecting the moisture content of the air flowing through the sewage draining outlet, and judging that the moisture discharging amount at the sewage draining outlet reaches a preset standard when the moisture content in the air is detected to be lower than or equal to a first preset value. The moisture content of the air flowing out of the sewage discharge port is detected by a moisture detection device such as a moisture sensor or a humidity sensor, and when the moisture content of the air flowing out is detected to be lower than a preset value, the spin-drying standard can be judged, namely the moisture content in the gas turbine reaches the relevant standard. Meanwhile, whether water drops are condensed on the inner wall of the sewage draining outlet can be observed through naked eyes so as to judge whether the spin-drying reaches the standard.
As shown in fig. 1, optionally, before the step of completing the blade cleaning, the method further includes a step of cleaning the blade: stopping an air extraction pipeline between the gas turbine and the gas compressor; and opening the sewage draining outlet, accelerating the blade to a third preset rotating speed, and spraying cleaning liquid by the cleaning device to clean the blade. When the blades of the compressor are cleaned, the air extraction pipeline between the gas turbine and the compressor is cut off, for example, an isolation valve between the gas turbine and the compressor is closed, so that cleaning liquid is prevented from entering the gas turbine through the air extraction pipeline in the cleaning process, and the cleaning liquid is prevented from damaging the gas turbine. The cleaning liquid after opening the drain in order to conveniently wash the blade of compressor can be in time discharge, thereby prevent that the cleaning liquid siltation from causing the harm to equipment. The blades are accelerated to a third preset rotating speed from a static state, the third preset rotating speed can be adjusted according to actual use requirements, and the cleaned pollutants can be thrown away only by meeting the centrifugal force generated by the blades, for example, the third preset rotating speed can be set to 3000 rpm-3300 rpm, and the rotating speed can not only throw away the cleaned pollutants, but also can not cause energy waste. The cleaning device sprays cleaning liquid to clean the blades of the air compressor, the cleaning device can select a cleaning vehicle which can be conveniently moved to adapt to different cleaning requirements, the cleaning vehicle controls the spraying and the disconnection of the cleaning liquid through a cleaning valve, the cleaning liquid is extracted and pressurized through a cleaning pump to spray the blades of the air compressor, and in other embodiments, the cleaning device can also select devices or equipment with cleaning functions such as a water gun. The cleaning solution may be a solution having a cleaning effect, and for example, the cleaning solution may be prepared by mixing a detergent and demineralized water at a ratio of 1: 4.
As shown in fig. 1, optionally, before the step of cleaning the blade, the method further includes: and detecting the temperature between two adjacent blades, and if the temperature between two adjacent blades is lower than or equal to a first preset temperature, cleaning the blades. Before the blades of the gas compressor are cleaned, the temperature between two adjacent blades is subjected to related detection to judge whether the blades meet the related standard for cleaning, damage to the blades in the cleaning process due to overhigh temperature of the blades of the gas compressor is avoided, and if the temperature between two adjacent blades does not reach the cleaning standard, the gas turbine can be kept stand for further cooling. The temperature between two adjacent blades can be detected by detecting the temperature of air between the two adjacent blades, and also can be detected by detecting the temperature of the surfaces of the two adjacent blades, and the first preset temperature can be adjusted according to actual use requirements, for example, in one embodiment, when the temperature of the air between the two adjacent blades is detected, the first preset temperature is 60-65 ℃, in other embodiments, the first preset temperature only needs to meet the condition that when the temperature of the adjacent blade is lower than or equal to the first preset temperature, the subsequent cleaning does not damage the blades.
As shown in fig. 1, further, before the step of spraying the cleaning liquid by the cleaning device to clean the blade, the method further comprises: heating the cleaning liquid, and detecting the temperature of the cleaning liquid; and when the temperature of the cleaning liquid is detected to be higher than or equal to a second preset temperature, the cleaning liquid is stopped being heated, and the cleaning device sprays the cleaning liquid to clean the blade. This temperature can be selected according to the in-service use demand to predetermine the second, for example, predetermine the second temperature and set up to 50 ℃, not only can guarantee that the washing liquid can carry out abundant dissolution and reaction to the pollutant, also can not lead to heating for a long time too long, influence the cleaning efficiency.
as shown in fig. 1, optionally, after the step of cleaning the blade by spraying the cleaning liquid by the cleaning device, before the step of completing the blade cleaning, the method further includes: and stopping the rotation of the blade, and standing the blade according to a first preset time period. After the cleaning device cleans the blades of the air compressor, the blades are stopped and kept stand for a period of time, so that not only can sufficient chemical reaction occur between pollutants and cleaning liquid, but also the pollutants can be soaked, the pollutants are softened, the pollutants can fall off from the blades more easily, and the cleaning effect is enhanced. This first preset time can be set for according to actual conditions, for example, can stall the blade and stew 30 minutes, not only can make pollutant and washing liquid take place abundant reaction, can also soak the pollutant for the pollutant softens, simultaneously, still can not reduce abluent time efficiency.
as shown in fig. 1, further, after the step of stopping the rotation of the blade and standing the blade for a first preset time period, and before the step of completing the cleaning of the blade, the method further includes: the blades are accelerated to a fourth preset rotating speed, and the cleaning device sprays rinsing liquid to rinse the blades; detecting the conductivity of the liquid flowing out of the sewage discharge port; when the conductivity of the liquid is detected to be lower than or equal to a second preset value, the cleaning device stops spraying the rinsing liquid; when the conductivity of the liquid is detected to be higher than the second preset value, the blades are continuously rinsed. After the blades stop rotating and stand still, pollutants and cleaning liquid fully react and are softened, at the moment, the blades are opened and are accelerated to a fourth preset rotating speed, so that the cleaning device sprays rinsing liquid to rinse the blades of the air compressor, the pollutants on the blades are further cleaned, the conductivity of the liquid flowing out of the sewage discharge port is detected to judge whether the rinsing is thorough or not, when the detected conductivity of the liquid is lower than a second preset value, namely the conductivity of the liquid flowing out of the sewage discharge port reaches a preset standard, the rinsing can be judged to reach the standard, and the cleaning device can stop spraying the rinsing liquid; when the detected conductivity of the liquid is higher than a second preset value, namely the conductivity of the liquid flowing out of the sewage draining exit does not reach a preset standard, the rinsing can be judged to be not up to the standard, and the cleaning device can continuously spray rinsing liquid to continuously rinse the blades of the air compressor until the conductivity of the liquid flowing out of the sewage draining exit reaches the preset standard. The problem that residual pollutants such as detergent foam and water washing stains are attached to the blades can be solved through rinsing, the second preset value of the conductivity can be selected according to actual use requirements, for example, the conductivity of pure water is required to be less than or equal to 11 mu s/cm at 20 ℃, and when the conductivity of liquid flowing out of a sewage discharge outlet is less than or equal to 20 mu s/cm, the conductivity of the liquid flowing out of the sewage discharge outlet reaches a preset standard so as to judge whether the rinsing effect reaches the standard or not, so that the rinsing duration and the rinsing frequency are determined, the rinsing effect is guaranteed, the rinsing efficiency is improved, and meanwhile, the economy is high. The rinsing liquid can be desalted water, industrial distilled water and other solutions with rinsing functions, and when the rinsing liquid is desalted water, the rinsing liquid has the following quality requirements: the dissolved solid particles are less than or equal to 10ppmm, the silica is less than or equal to 3ppmm, the PH value is between 5.0 and 7.5, the conductivity is less than or equal to 11 microseconds per centimeter at the temperature of 20 +/-5 ℃, and the rinsing effect is better.
As shown in fig. 1, further, before the step of rinsing the blade by spraying the rinsing liquid by the cleaning device, the method further comprises the steps of: heating the rinsing liquid, and detecting the temperature of the rinsing liquid; and when the temperature of the rinsing liquid is detected to be higher than or equal to a third preset temperature, the rinsing liquid is stopped being heated, and the cleaning device sprays the rinsing liquid to rinse the blades. Before the cleaning device rinses the blades of the air compressor, the rinsing liquid is heated to a third preset temperature or higher than the third preset temperature, and the heated rinsing liquid is used for fully dissolving pollutants again, so that the rinsing decontamination effect of the rinsing liquid is enhanced. This third preset temperature can be selected according to the actual use demand, for example, set up the third preset temperature to 50 ℃, not only can guarantee that the rinsing liquid can carry out abundant dissolution to the pollutant, also can not lead to heating for a long time overlength, influence rinsing efficiency.
as shown in fig. 1, optionally, after the step of starting the ignition system and before the step of warming up the blades to the second preset rotation speed, the method further includes the steps of: the air extraction pipeline between the gas turbine and the compressor is communicated. The method comprises the steps of conducting an air extraction pipeline between the gas turbine and the air compressor, for example, opening an isolation valve between the gas turbine and the air compressor, then starting an ignition system, enabling hot air to circulate in the whole gas turbine, purging and evaporating moisture remained in the gas turbine, thoroughly exhausting and cleaning the moisture remained in a unit, fully drying each channel in the gas turbine, preventing corrosion and moisture, and ensuring that the ignition system can normally ignite.
As shown in fig. 1, optionally, before the step of spraying the cleaning liquid by the cleaning device to clean the blade, the method further comprises: and detecting the ambient temperature, and performing anti-freezing treatment on the cleaning liquid when the ambient temperature is lower than a fourth preset temperature. The method comprises the steps of detecting the environmental temperature before cleaning the air compressor to judge whether the environmental temperature reaches a preset standard, and when the environmental temperature is lower than a fourth preset temperature, namely the environmental temperature does not reach the standard of direct cleaning, performing anti-freezing treatment on cleaning liquid, for example, adding an anti-freezing agent into the cleaning liquid to prevent the cleaning liquid from being frozen or becoming sticky due to the fact that the environmental temperature is too low in the cleaning process, so that the cleaning effect is influenced, and even secondary pollution is caused to blades of the air compressor. The fourth preset temperature may be adjusted according to actual use requirements, for example, in one embodiment, the fourth preset temperature is 5 ℃, and in other embodiments, the third preset temperature only needs to satisfy that the cleaning solution does not need to be subjected to anti-freezing treatment when the ambient temperature is higher than the fourth preset temperature.
As shown in fig. 1, alternatively, during the compressor warm-up, if the unit has a grid-connected plan, the speed is increased and the unit is connected to the grid after the warm-up is finished, and if the unit does not have the grid-connected plan, the unit is stopped after the warm-up is performed for a preset time.
As shown in FIG. 2, an embodiment of the present invention is also directed to a gas turbine, comprising: a compressor; the gas turbine is rotationally connected with the gas compressor; the detection device comprises a rotating speed sensor for detecting the rotating speed of blades of the air compressor, a moisture sensor for detecting the moisture content of air flowing through the sewage draining outlet, a first temperature sensor for detecting the temperature between adjacent blades of the air compressor, a second temperature sensor for detecting the temperature of cleaning liquid, an electric conductivity sensor for detecting the electric conductivity of liquid flowing out of the sewage draining outlet and a third temperature sensor for detecting the temperature of rinsing liquid; and the control device is electrically connected with the rotating speed sensor, the moisture sensor, the first temperature sensor, the second temperature sensor, the conductivity sensor and the third temperature sensor.
The gas turbine of the embodiment comprises a gas compressor, a gas turbine, a detection device and a control device, wherein the gas compressor is rotationally connected with the gas turbine so as to realize power transmission; the moisture sensor detects the moisture content of the air flowing through the sewage draining exit and transmits a corresponding signal to the control device, and the opening and closing of the sewage draining exit are realized through the control device; the first temperature sensor detects the temperature between adjacent blades of the compressor and transmits corresponding temperature signals to the control device, and the control device judges whether the conditions for cleaning the compressor are met; the second temperature sensor detects the temperature of the cleaning liquid and transmits a corresponding temperature signal to the control device, and the control device judges whether the temperature of the cleaning liquid reaches the standard or not; the conductivity sensor detects the conductivity of the liquid flowing out of the sewage draining port and transmits a corresponding temperature signal to the control device, and the control device judges whether the rinsing reaches the standard; the third temperature sensor detects the temperature of the rinsing liquid and transmits a corresponding temperature signal to the control device, and the control device judges whether the temperature of the rinsing liquid reaches the standard or not. Detect corresponding parameter and with detected signal transmission to controlling means through detection device, respond by the corresponding part of controlling means control, can effectually prevent that moisture from remaining inside gas turbine, avoid wasing the inside corrosion of taking place of remaining moisture messenger gas turbine, ignition system and wet scheduling problem after the washing.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of cleaning a gas turbine, comprising the steps of:
After the blades are cleaned, the blades are cold-operated according to a first preset rotating speed, and the moisture discharge amount of a sewage outlet is detected;
and when the moisture discharge amount at the sewage draining port reaches a preset standard, closing the sewage draining port, starting an ignition system, accelerating the blades to a second preset rotating speed for warm-up operation, and drying moisture remained in the gas turbine.
2. The gas turbine washing method according to claim 1, wherein the step of detecting the moisture discharge amount of the drain includes:
And detecting the moisture content of the air flowing through the sewage draining outlet, and judging that the moisture discharging amount at the sewage draining outlet reaches a preset standard when the moisture content in the air is detected to be lower than or equal to a first preset value.
3. The gas turbine engine washing method of claim 1, further comprising, before the step of washing the blades, the step of washing the blades:
Stopping an air extraction pipeline between the gas turbine and the gas compressor;
And opening the sewage draining outlet, accelerating the blade to a third preset rotating speed, and spraying cleaning liquid by the cleaning device to clean the blade.
4. the gas turbine engine washing method of claim 3, further comprising, prior to the step of washing the blades:
And detecting the temperature between two adjacent blades, and if the temperature between two adjacent blades is lower than or equal to a first preset temperature, cleaning the blades.
5. The gas turbine washing method as set forth in claim 3, wherein said washing device, before said step of spraying a washing liquid to wash said blade, further includes:
Heating the cleaning liquid, and detecting the temperature of the cleaning liquid;
And when the temperature of the cleaning liquid is detected to be higher than or equal to a second preset temperature, the cleaning liquid is stopped being heated, and the cleaning device sprays the cleaning liquid to clean the blade.
6. The gas turbine washing method according to claim 3, wherein after the step of washing the blade by injecting the washing liquid by the washing device and before the step of completing the blade washing, the method further comprises:
and stopping the rotation of the blade, and standing the blade according to a first preset time period.
7. the gas turbine engine washing method as set forth in claim 6, wherein said step of stopping rotation of said blade and leaving said blade stationary for a first predetermined period of time is further followed by said step of completing said blade washing, and further comprising:
the blades are accelerated to a fourth preset rotating speed, and the cleaning device sprays rinsing liquid to rinse the blades;
Detecting the conductivity of the liquid flowing out of the sewage discharge port;
When the conductivity of the liquid is detected to be lower than or equal to a second preset value, the cleaning device stops spraying the rinsing liquid;
when the conductivity of the liquid is detected to be higher than the second preset value, the blades are continuously rinsed.
8. the gas turbine engine washing method as set forth in claim 7, wherein said step of spraying a rinsing liquid to rinse said blades by said washing apparatus further includes the steps of:
Heating the rinsing liquid, and detecting the temperature of the rinsing liquid;
And when the temperature of the rinsing liquid is detected to be higher than or equal to a third preset temperature, the rinsing liquid is stopped being heated, and the cleaning device sprays the rinsing liquid to rinse the blades.
9. the gas turbine washing method as set forth in claim 1, wherein said step of activating an ignition system is followed by said step of warming up said blades to a second predetermined speed, and further comprising the steps of: the air extraction pipeline between the gas turbine and the compressor is communicated.
10. A gas turbine to which the cleaning method according to any one of claims 1 to 9 is applied, comprising:
A compressor;
the gas turbine is rotationally connected with the gas compressor;
the detecting device comprises a rotating speed sensor for detecting the rotating speed of blades of the air compressor, a moisture sensor for detecting the moisture content of air flowing through a sewage draining outlet, a first temperature sensor for detecting the temperature between adjacent blades of the air compressor, a second temperature sensor for detecting the temperature of cleaning liquid, an electric conductivity sensor for detecting the electric conductivity of liquid flowing out of the sewage draining outlet and a third temperature sensor for detecting the temperature of rinsing liquid;
And the control device is electrically connected with the rotating speed sensor, the moisture sensor, the first temperature sensor, the second temperature sensor, the conductivity sensor and the third temperature sensor.
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|---|---|---|---|---|
| US20140144151A1 (en) * | 2012-11-29 | 2014-05-29 | United Technologies Corporation | Engine Compressor Wash System |
| DE102014109711A1 (en) * | 2013-07-22 | 2015-01-22 | General Electric Company | Systems and methods for washing a gas turbine compressor |
| CN104196768B (en) * | 2014-07-31 | 2017-08-04 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | The compressor off-line washing control method and system of a kind of gas turbine |
| CN205146810U (en) * | 2015-12-03 | 2016-04-13 | 哈尔滨中航动科燃气轮机成套制造有限公司 | Gas turbine belt cleaning device |
| CN107061019A (en) * | 2017-04-24 | 2017-08-18 | 中国航发沈阳发动机研究所 | A kind of gas turbine off-line cleaning method |
| CN107497743B (en) * | 2017-08-07 | 2020-06-05 | 江苏江海润液设备有限公司 | Control method for gas turbine cleaning system |
| CN107297350A (en) * | 2017-08-09 | 2017-10-27 | 上海电气燃气轮机有限公司 | The leaf cleaning system of gas turbine blower |
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