KR20230027441A - Compressor washing apparatus and compressor washing method using the same - Google Patents

Abstract

The present invention provides a compressor washing apparatus and a compressor washing method using the same. The compressor washing apparatus comprises: a steam generator installed in front of a compressor of a gas turbine and generating steam; a steam header installed behind the steam generator and storing the steam generated from the steam generator therein; a first injection pipe and a second injection pipe connected to the rear of the steam header and selectively supplying the steam from the steam header to the compressor; a water supply means for supplying water to the first injection pipe and the second injection pipe, respectively; and a first injection nozzle and a second injection nozzle which are installed at an inlet of the compressor, receive the steam or the water from the first injection pipe and the second injection pipe, respectively, and spray the steam or the water to a compressor vane and a compressor blade inside the compressor. The first injection nozzle and the second injection nozzle independently spray the steam or the water, respectively. The present invention allows the compressor to be washed smoothly without problems even in the winter.

Description

Compressor washing apparatus and compressor washing method using the same {Compressor washing apparatus and compressor washing method using the same}

The present invention relates to a compressor cleaning device and a compressor cleaning method using the same, to a device for cleaning a compressor provided in a gas turbine for sucking and compressing external air, and a method for cleaning a compressor using the device.

A turbo machine means a device that generates power for power generation through a fluid (particularly, a gas) passing through the turbo machine. Therefore, turbomachines are usually installed and used together with generators. Such turbomachines may include gas turbines, steam turbines, wind power turbines, and the like. A gas turbine is a device that generates combustion gas by mixing and combusting compressed air and natural gas, and generates power for power generation using the combustion gas generated in this way. A steam turbine is a device that generates power for power generation using steam generated by heating water. A wind turbine is a device that converts wind power into power for electricity generation.

Looking at a gas turbine among turbomachines, a gas turbine includes a compressor, a combustor, and a turbine. In the compressor, a plurality of compressor vanes and compressor blades are alternately arranged in a compressor casing. And the compressor sucks in air from the outside through a compressor inlet scroll strut. Air sucked in as described above is compressed by the compressor vanes and compressor blades while passing through the inside of the compressor. The combustor receives compressed air from the compressor and mixes it with fuel. In addition, the combustor generates high-temperature and high-pressure combustion gas by igniting the fuel mixed with compressed air with an igniter. The combustion gas thus generated is supplied to the turbine. In the turbine, a plurality of turbine vanes and turbine blades are alternately arranged in a turbine casing. And the turbine receives the combustion gas generated from the combustor and passes it to the inside. The combustion gas passing through the inside of the turbine rotates the turbine blades, and the combustion gas passing completely through the inside of the turbine is discharged to the outside through the turbine diffuser.

Looking at a steam turbine among turbomachines, the steam turbine includes an evaporator and a turbine. The evaporator generates steam by heating water supplied from the outside. Like a turbine in a gas turbine, a plurality of turbine vanes and turbine blades are alternately arranged in a turbine casing. However, the turbine in the steam turbine rotates the turbine blades by passing the steam generated in the evaporator instead of the combustion gas to the inside.

Meanwhile, in order to clean the compressor of the gas turbine, a method of injecting water into the compressor from the front of the compressor is used. At this time, according to the conventional compressor cleaning method, when the air temperature is 4 degrees or less in winter, there is a problem in that icing occurs at the rear end of the inlet guide vane located at the frontmost end of the compressor vane.

Japanese Patent Laid-Open No. 2015-021500 (Title of Invention: Cleaning System and Method for Gas Turbine Compressor)

The present invention was developed to solve the above problems, and a compressor cleaning device that cleans the compressor using a plurality of nozzles for spraying water or high-temperature steam so that the compressor can be smoothly cleaned without problems even in winter. And it is an object to provide a compressor cleaning method using the same.

The present invention is installed in front of the compressor of the gas turbine, the steam generator for generating steam; a steam header installed behind the steam generator and storing the steam generated by the steam generator therein; first and second injection pipes connected to the rear of the steam header and selectively supplying steam from the steam header to the compressor; water supply means for supplying water to the first injection pipe and the second injection pipe; and a first injection nozzle installed at an inlet of the compressor, receiving steam or water from the first injection pipe and the second injection pipe, and injecting steam or water to compressor vanes and compressor blades inside the compressor. It includes two injection nozzles, but the first injection nozzle and the second injection nozzle provide a compressor cleaning device for independently injecting steam or water, and a compressor cleaning method using the same.

Based on the central axis of the gas turbine, the first injection pipe may be disposed radially outside the second injection pipe, and the first injection nozzle may be disposed radially outside the second injection nozzle.

Based on the rotation speed of the compressor blade, the first injection nozzle and the second injection nozzle inject steam at v1 rpm to v2 rpm (v2 > v1), and at v2 rpm to v3 rpm (v3 > v2), the first injection nozzle The spray nozzle and the second spray nozzle may spray water.

When the first injection nozzle and the second injection nozzle inject steam, the first injection nozzle and the second injection nozzle inject steam for t1 min and stop the injection for t2 min (t1 > t2), When the first spray nozzle and the second spray nozzle spray water, the first spray nozzle and the second spray nozzle may spray water for t3 min and stop spraying for t4 min (t3 < t4).

The compressor cleaning apparatus according to the present invention further includes an outdoor temperature measuring means for measuring the temperature of the outdoor air, and when the outdoor temperature measured by the outdoor temperature measuring means is Ta ° C to Tb ° C (Ta < Tb), the The first spray nozzle and the second spray nozzle spray steam, and when the temperature of the outside air measured by the outside air temperature measuring unit is Tc ℃ to Td ℃ (Tb < Tc < Td), the first spray nozzle and the second spray nozzle The spray nozzle may spray water.

The first injection nozzle may inject steam or water only when the gas turbine is stopped operating, and the second injection nozzle may inject steam or water while the gas turbine is in operation or in a stopped state.

When one of the first and second injection nozzles injects steam, the other may inject water.

The compressor cleaning device according to the present invention is installed in the first injection pipe and the second injection pipe, respectively, and is disposed in front of a point where the water supply means and the first injection pipe and the second injection pipe are connected, and the first injection pipe and the second injection pipe are connected. It further includes a first injection valve and a second injection valve that open and close the injection pipe and the second injection pipe, and when the operation of the gas turbine is classified into starting, normal operation, and shutdown, when starting or shutting down the gas turbine , Only one of the first injection valve and the second injection valve opens any one of the first injection pipe and the second injection pipe, and during normal operation of the gas turbine, the first injection valve and the second injection valve may open both the first injection pipe and the second injection pipe.

According to the compressor cleaning device and the cleaning method using the same according to the present invention, the compressor can be cleaned more effectively by changing the injection patterns of the first injection nozzle and the second injection nozzle in various ways under various conditions.

1 is a cross-sectional view of a gas turbine.
FIG. 2 shows a state in which a compressor cleaning device according to the present invention is installed in the compressor shown in FIG. 1, and is a view showing a first embodiment of the present invention.
3 is a view showing a second embodiment of the present invention.
4 is a view showing a third embodiment of the present invention.
5 is a view showing a fourth embodiment of the present invention.
6 is a view showing a fifth embodiment of the present invention.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

Referring to FIG. 1 , a gas turbine 10 includes a compressor 11 , a combustor 12 and a turbine 13 . Based on the flow direction of the gas (compressed air or combustion gas), the compressor 11 is disposed on the upstream side of the gas turbine 10 and the turbine 13 is disposed on the downstream side. A combustor 12 is disposed between the compressor 11 and the turbine 13 .

The compressor 11 accommodates the compressor vane 32 and the compressor rotor 20 inside the compressor casing 31, and the turbine 13 accommodates the turbine vane and the turbine rotor inside the turbine casing. The compressor vanes 32 and the compressor rotor 20 are arranged in multi-stages along the flow direction of compressed air, and the turbine vanes and turbine rotors are also arranged in multi-stages along the flow direction of combustion gas. At this time, the internal space of the compressor 11 decreases from the front-stage to the rear-stage so that the intake air can be compressed, and the turbine 13, on the contrary, expands the combustion gas supplied from the combustor. It is designed with a structure in which the internal space increases from the front end to the rear end.

On the other hand, between the compressor rotor located at the rear end of the compressor 11 and the turbine rotor located at the front end of the turbine 13, the rotational torque generated in the turbine 13 is transmitted to the compressor 11 A torque tube as a torque transmission member is disposed. As shown in FIG. 1, the torque tube may be composed of a plurality of torque tube disks having a total of three stages, but this is only one of several embodiments of the present invention, and the torque tube may have four or more stages or It may also consist of a plurality of torque tube disks with two or less stages.

The compressor rotor 20 includes a compressor disk 21 and a compressor blade 22 . A plurality of (for example, 14) compressor disks 21 are provided inside the compressor casing 31, and each of the compressor disks 21 is fastened by tie rods so as not to be spaced apart in the axial direction. More specifically, the respective compressor disks 21 are axially aligned with each other with their central portions pierced by the tie rods. And, each of the adjacent compressor disks 21 are disposed such that opposing surfaces are compressed by the tie rods and cannot rotate relative to each other.

A plurality of compressor blades 22 are radially coupled to the outer circumferential surface of the compressor disk 21 . In addition, between the compressor blades 22, a plurality of compressor vanes 32, which are annularly installed on the inner circumferential surface of the compressor casing 31 based on the same stage, are disposed. Unlike the compressor disk 21, the compressor vane 32 maintains a fixed state so as not to rotate, and arranges the flow of compressed air passing through the compressor blade 22 to arrange the compressor blade 22 located on the downstream side It serves as a guide for compressed air. At this time, the compressor casing 31 and the compressor vane 32 may be defined as a comprehensive name of the compressor stator 30 in order to distinguish them from the compressor rotor 20 .

Referring to FIG. 2 , the compressor stator 30 further includes a compressor inlet scroll strut 33 in addition to the compressor casing 31 and the compressor vane 32 . The compressor inlet scroll strut 33 is connected to the front end of the compressor casing 31 and guides external air to the inlet of the compressor casing 31 . On the other hand, among the compressor vanes 32, one located at the front end is called an inlet guide vane 34. The inlet guide vane 34 serves to guide the air introduced into the compressor casing 31 to the compressor blade 22 and the compressor vane 32 disposed at the rear end.

Referring back to FIG. 1, the tie rod is disposed to pass through the center of the plurality of compressor disks 21 and a turbine disk to be described later, and one end of the compressor disk is located at the front end of the compressor 11. (21), and the other end is fastened by a fixing nut.

Since the shape of the tie rod may be formed in various structures depending on the gas turbine, it is not necessarily limited to the shape shown in FIG. 1 . That is, as shown, one tie rod may have a shape penetrating the center of the compressor disk and the turbine disk, or a plurality of tie rods may be arranged in a circumferential shape, and a combination thereof is possible.

Although not shown, a deswirler serving as a guide vane may be installed in the compressor of the gas turbine to adjust the flow angle of the fluid entering the inlet of the combustor to the design flow angle after increasing the pressure of the fluid.

In the combustor 12, the introduced compressed air is mixed with fuel and combusted to produce high-energy, high-temperature, high-pressure combustion gas. will raise

A plurality of combustors constituting the combustion system of the gas turbine 10 may be arranged in a combustor casing formed in a cell shape, and a nozzle for injecting fuel, a liner for forming a combustion chamber, and a combustor It includes a transition piece that becomes a connection part of the turbine.

Specifically, the liner provides a combustion space in which fuel injected through a fuel nozzle is mixed with compressed air of a compressor and burned. Such a liner is formed with a combustion chamber providing a combustion space in which fuel mixed with air is combusted, and an annular liner passage forming an annular space while surrounding the combustion chamber. In addition, a nozzle for injecting fuel is coupled to the front end of the liner, and an igniter is coupled to the side wall.

Compressed air introduced through a plurality of holes provided in the outer wall of the liner flows in the annular liner flow passage, and compressed air cooling a transition piece to be described later also flows therethrough. As the compressed air flows along the outer wall of the liner, it is possible to prevent the liner from being thermally damaged by heat generated by combustion of fuel in the combustion chamber.

At the rear end of the liner, a transition piece is connected to send the combustion gas burned by the spark plug to the turbine side. Like the liner, the transition piece has a transition piece annular flow path surrounding the inner space of the transition piece, and the outer wall is compressed by compressed air flowing along the transition piece annular flow path to prevent damage due to high temperature of the combustion gas. part is cooled

Meanwhile, the high-temperature, high-pressure combustion gas from the combustor 12 is supplied to the turbine 13 described above. The high-temperature and high-pressure combustion gas supplied to the turbine 13 expands while passing through the inside of the turbine 13, and thus applies impulse and reaction forces to the turbine blades to be described later so that rotational torque is generated. The rotational torque obtained in this way is transmitted to the compressor via the above-described torque tube, and a portion exceeding the power necessary for driving the compressor is used to drive a generator or the like.

The turbine 13 is basically similar to the structure of the compressor 11. That is, the turbine 13 is also provided with a plurality of turbine rotors similar to the compressor rotor of the compressor 11 . Accordingly, the turbine rotor also includes a turbine disk and a plurality of turbine blades radially disposed therefrom. Between the turbine blades, a plurality of turbine vanes which are annularly installed in the turbine casing with reference to the same stage are provided, and the turbine vanes guide the flow direction of the combustion gas passing through the turbine blades. At this time, the turbine casing and the turbine vane may also be defined as a comprehensive name of a turbine stator in order to distinguish them from the turbine rotor 10 .

2 to 6, the compressor cleaning devices 100, 200, 300, 400, 500 according to the first to fifth embodiments of the present invention are installed in front of the compressor 11, and water or high-temperature steam enters the compressor. is sprayed to clean the parts inside the compressor 11. At this time, the compressor cleaning devices 100, 200, 300, 400, and 500 perform various cleaning methods according to each embodiment, which will be described in detail below.

Referring to FIG. 2, the compressor cleaning apparatus 100 according to the first embodiment of the present invention includes a steam generator 110, a steam header 111, a supply pipe 112, a shutdown valve 113, a discharge pipe ( 114), discharge valve 115, first injection pipe 120, second injection pipe 121, first injection valve 122, second injection valve 123, first injection nozzle 130, It includes two injection nozzles 140 and a water supply means 150.

The steam generator 110 is installed in front of the compressor 11 and generates steam. The steam generator 110 may be a heat recovery steam generator (HRSG) of a cogeneration plant or may correspond to an auxiliary boiler of the HRSG. The steam header 111 is installed at the rear of the steam generator 110, receives the steam generated from the steam generator 110, and stores it therein. The supply pipe 112 is installed between the steam generator 110 and the steam header 111, and supplies steam from the steam generator 110 to the steam header 111. The shutdown valve 113 is installed in the supply pipe 112, and closes the supply pipe 112 in an emergency so that steam is no longer supplied to the steam header 111. The discharge pipe 114 is installed in the steam header 111, and selectively discharges the condensed water present in the steam header 111 to the outside. The discharge valve 115 is installed in the discharge pipe 114 and opens and closes the discharge pipe 114 .

The first injection pipe 120 and the second injection pipe 121 are installed between the steam header 111 and the compressor inlet scroll strut 33, and mutually follow the radial direction of the compressor 11. sorted The first injection pipe 120 and the second injection pipe 121 selectively supply steam from the steam header 111 to the compressor 11 . The first injection valve 122 and the second injection valve 123 are installed in the first injection pipe 120 and the second injection pipe 121, respectively, and the first injection pipe 120 and the second injection pipe 120 The pipe 121 is opened and closed. The water supply means 150 selectively supplies water to the first injection pipe 120 and the second injection pipe 121, respectively.

The first injection nozzle 130 and the second injection nozzle 140 are seated on the inner wall of the compressor inlet scroll strut 33, and pass through the first injection pipe 120 and the second injection pipe 121. Each is supplied with steam or water. Then, steam or water is sprayed into the compressor 11 to clean the inside of the compressor 11 . At this time, the first injection valve 122 is disposed in front of a connection point between the water supply means 150 and the first injection pipe 120 . Similarly, the second injection valve 123 is disposed in front of the connection point between the water supply means 150 and the second injection pipe 121 . Therefore, when water is to be injected through the first injection nozzle 130 and the second injection nozzle 140, the first injection valve 122 and the second injection valve 123 are connected to the first injection pipe 120. ) and the second injection pipe 121 are closed.

Based on the central axis of the gas turbine, the first injection pipe 120 is disposed radially outside the second injection pipe 121, and the first injection nozzle 130 is the second injection nozzle 140 It is arranged more radially outward. And, the first injection nozzle 130 is disposed outside the second injection nozzle 140 in the radial direction. At this time, the first injection nozzle 130 and the second injection nozzle 140 respectively inject steam or water independently. That is, the first injection nozzle 130 and the second injection nozzle 140 selectively inject steam or water into the compressor 11 without being constrained to the other injection form or method.

In the first embodiment of the present invention, based on the rotation speed of the compressor blade 22, the first injection nozzle 130 and the second injection nozzle 140 are steam at v1 rpm to v2 rpm (v2 > v1) is sprayed, and the first spray nozzle 130 and the second spray nozzle 140 spray water at v2 rpm to v3 rpm (v3 > v2). For example, v1 may be 3 rpm, v2 may be 60 rpm, and v3 may be 3600 rpm. v1 to v2 rpm are relatively low speeds, and v2 to v3 are relatively high speeds. Under these high speed conditions, the steam injected into the compressor 11 freezes. This is because the internal temperature of the device decreases as the flow rate increases. Therefore, the first injection nozzle 130 and the second injection nozzle 140 inject steam under low speed conditions such as v1 to v2 rpm, and the first injection nozzle 130 and the second injection nozzle 130 in high speed conditions such as v2 to v3 rpm. The second spray nozzle 140 sprays water.

In addition, in the first embodiment of the present invention, when the first injection nozzle 130 and the second injection nozzle 140 spray steam, the first injection nozzle 130 and the second injection nozzle 140 injects steam for t1 min and stops the injection for t2 min (t1 > t2). When the first spray nozzle 130 and the second spray nozzle 140 spray water, the first spray nozzle 130 and the second spray nozzle 140 spray water for t3 min and t4 min ( Stop injection during t3 < t4). For example, t1 may be 3 min, t2 may be 5 min, t3 may be 5 min, and t4 may be 3 mim. While the first spray nozzle 130 and the second spray nozzle 140 stop spraying, steam or water is charged in the steam header 111 or water supply means 150, and the first and second spray pipes Steam or water is loaded into the first and second injection nozzles 130 and 140 through (120 and 121). At this time, t1 is larger than t2, whereas t3 is smaller than t4 because steam has a lower density than water, so steam needs to be charged and loaded longer than water for the same level of cleaning.

Referring to FIG. 3 , the compressor cleaning apparatus 200 according to the second embodiment of the present invention further includes an outside air temperature measuring unit 160 . The outside air temperature measurement means 160 measures the temperature of the outside air. At this time, in the second embodiment of the present invention, when the temperature of the outside air measured by the outside air temperature measuring means 160 is Ta ° C to Tb ° C (Ta < Tb), the first spray nozzle 130 and the second The injection nozzle 140 injects steam, and when the temperature of the outside air measured by the outside air temperature measuring means 160 is Tc ℃ to Td ℃ (Tb < Tc < Td), the first injection nozzle 130 and The second spray nozzle 140 sprays water. When the temperature of the outside air is Ta ° C to Tb ° C, the compressor cleaning device 200 determines that it is the current winter season, and when the temperature of the outside air is Tc ° C to Td ° C, the compressor cleaning device 200 determines that it is the current summer season do. Since water freezes when sprayed in winter, the first and second spray nozzles 130 and 140 spray steam instead of water.

Referring to FIG. 4, in the compressor cleaning device 300 according to the third embodiment of the present invention, the first injection nozzle 130 injects steam or water only when the operation of the gas turbine 10 is stopped, and , The second injection nozzle 140 may inject steam or water while the gas turbine 10 is operating or stopped operating. 4 shows a state of the gas turbine 10 during operation.

Referring to FIG. 5 , in the compressor cleaning device 400 according to the fourth embodiment of the present invention, the first injection nozzle 130 and the second injection nozzle 140 are different when either one injects steam. One can spray water. For example, when the first injection nozzle 130 injects water, the second injection nozzle 140 may inject steam.

Referring to FIG. 6, in the compressor cleaning apparatus 500 according to the fifth embodiment of the present invention, when the operation of the gas turbine 10 is divided into start-up, steady-state operation, and shutdown, the gas turbine 10 When starting up or shutting down, only one of the first injection valve 130 and the second injection valve 140 opens any one of the first injection pipe 120 and the second injection pipe 121, and the gas During normal operation of the turbine 10, the first injection valve 122 and the second injection valve 123 may open both the first injection pipe 120 and the second injection pipe 121. 6 shows a state of the gas turbine 10 during steady-state operation.

The above-described compressor cleaning methods of the compressor cleaning devices 300, 400, and 500 according to the third to fifth embodiments of the present invention are only exemplary, and any method capable of effectively cleaning the compressor 11 may be implemented. .

10: gas turbine 11: compressor
12: combustor 13: turbine
20: compressor rotor 21: compressor disk
22: compressor blade 30: compressor stator
31: compressor casing 32: compressor vane
33: compressor inlet scroll strut 34: inlet guide vane
100,200,300,400,500: Compressor cleaning device
110: steam generator 111: steam header
112: supply pipe 113: shutdown valve
114: discharge pipe 115: discharge valve
120: first injection pipe 121: second injection pipe
122: first injection valve 123: second injection valve
130: first injection nozzle 140: second injection nozzle
150: water supply means 160: outside air temperature measuring means

Claims (16)

A steam generator installed in front of the compressor of the gas turbine to generate steam;
a steam header installed behind the steam generator and storing the steam generated by the steam generator therein;
first and second injection pipes connected to the rear of the steam header and selectively supplying steam from the steam header to the compressor;
water supply means for supplying water to the first injection pipe and the second injection pipe; and
A first injection nozzle and a second injection nozzle installed at an inlet of the compressor, receiving steam or water from the first injection pipe and the second injection pipe, and injecting steam or water to compressor vanes and compressor blades inside the compressor. Including a spray nozzle,
The first injection nozzle and the second injection nozzle respectively inject steam or water independently. The method of claim 1,
Based on the central axis of the gas turbine, the first injection pipe is disposed radially outside the second injection pipe, and the first injection nozzle is disposed radially outside the second injection nozzle Compressor cleaning device. The method of claim 1,
Based on the rotation speed of the compressor blade, the first injection nozzle and the second injection nozzle inject steam at v1 rpm to v2 rpm (v2 > v1), and at v2 rpm to v3 rpm (v3 > v2), the first injection nozzle The spray nozzle and the second spray nozzle are compressor cleaning devices for spraying water. The method of claim 1,
When the first injection nozzle and the second injection nozzle inject steam, the first injection nozzle and the second injection nozzle inject steam for t1 min and stop the injection for t2 min (t1 > t2),
When the first injection nozzle and the second injection nozzle spray water, the first injection nozzle and the second injection nozzle inject water for t3 min and stop the injection for t4 min (t3 < t4) Compressor cleaning Device. The method of claim 1,
Further comprising an outdoor temperature measuring means for measuring the temperature of the outdoor air,
When the temperature of the outside air measured by the outside air temperature measurement means is Ta ° C to Tb ° C (Ta < Tb), the first and second injection nozzles inject steam,
When the temperature of the outside air measured by the outside air temperature measuring unit is Tc ℃ to Td ℃ (Tb < Tc < Td), the first injection nozzle and the second injection nozzle spray water. The method of claim 1,
The first injection nozzle injects steam or water only when the operation of the gas turbine is stopped,
The second injection nozzle is a compressor cleaning device for injecting steam or water while the gas turbine is operating or in a stopped operation state. The method of claim 1,
The first injection nozzle and the second injection nozzle, when one injects steam, the other injects water. The method of claim 1,
It is installed in the first injection pipe and the second injection pipe, respectively, is disposed in front of the point where the water supply means and the first injection pipe and the second injection pipe are connected, and opens and closes the first injection pipe and the second injection pipe. Further comprising a first injection valve and a second injection valve to
When the operation of a gas turbine is classified into start-up, steady-state operation, and shutdown,
When the gas turbine is started or shut down, only one of the first injection valve and the second injection valve opens one of the first injection pipe and the second injection pipe,
During normal operation of the gas turbine, the first injection valve and the second injection valve open both the first injection pipe and the second injection pipe. A steam generator installed in front of the compressor of the gas turbine and generating steam, a steam header installed at the rear of the steam generator and storing the steam generated by the steam generator therein, and connected to the rear of the steam header to generate the steam A first injection pipe and a second injection pipe for selectively supplying steam from the header to the compressor, a water supply means for supplying water to the first injection pipe and the second injection pipe, respectively, installed at the inlet of the compressor, and Using a compressor cleaning device including a first and second injection nozzles receiving steam or water from the first injection pipe and the second injection pipe and injecting the steam or water to the compressor vanes and compressor blades inside the compressor In the method for cleaning a gas turbine compressor by
The first injection nozzle and the second injection nozzle respectively inject steam or water independently. The method of claim 9,
Based on the central axis of the gas turbine, the first injection pipe is disposed radially outside the second injection pipe, and the first injection nozzle is disposed radially outside the second injection nozzle Compressor cleaning method. The method of claim 9,
Based on the rotation speed of the compressor blade, the first injection nozzle and the second injection nozzle inject steam at v1 rpm to v2 rpm (v2 > v1), and at v2 rpm to v3 rpm (v3 > v2), the first injection nozzle A compressor cleaning method in which water is sprayed from the spray nozzle and the second spray nozzle. The method of claim 9,
When the first injection nozzle and the second injection nozzle inject steam, the first injection nozzle and the second injection nozzle inject steam for t1 min and stop the injection for t2 min (t1 > t2),
When the first injection nozzle and the second injection nozzle spray water, the first injection nozzle and the second injection nozzle inject water for t3 min and stop the injection for t4 min (t3 < t4) Compressor cleaning method. The method of claim 9,
The compressor cleaning device further includes an outside air temperature measuring means for measuring the temperature of the outside air,
When the temperature of the outside air measured by the outside air temperature measurement means is Ta ° C to Tb ° C (Ta < Tb), the first and second injection nozzles inject steam,
When the temperature of the outside air measured by the outside air temperature measuring unit is Tc ℃ to Td ℃ (Tb < Tc < Td), the first injection nozzle and the second injection nozzle spray water. The method of claim 9,
The first injection nozzle injects steam or water only when the operation of the gas turbine is stopped,
The second injection nozzle is a compressor cleaning method for injecting steam or water while the gas turbine is operating or in a stopped operation state. The method of claim 9,
Compressor cleaning method of the first injection nozzle and the second injection nozzle, when one injects steam, the other injects water. The method of claim 9,
The compressor washing device is installed in the first injection pipe and the second injection pipe, respectively, and is disposed in front of a point where the water supply means and the first injection pipe and the second injection pipe are connected, and the first injection pipe and the second injection pipe Further comprising a first injection valve and a second injection valve for opening and closing the injection pipe,
When the operation of a gas turbine is classified into start-up, steady-state operation, and shutdown,
When the gas turbine is started or shut down, only one of the first injection valve and the second injection valve opens one of the first injection pipe and the second injection pipe,
During normal operation of the gas turbine, the first injection valve and the second injection valve open both the first injection pipe and the second injection pipe.

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