Cleaning process for gas distributor channel of combustion chamber of heavy-duty gas turbine

Abstract

The invention discloses a heavy-duty gas turbine combustion chamber gas distributor channel cleaning process which comprises the following steps: firstly, shutting down and cutting off a power supply of a gas turbine to ensure safety; disassembling the combustion chamber shell, taking out the combustion chamber assembly and exposing the gas distributor channel; an environment-friendly cleaning agent is selected, and an ultrasonic cleaning machine, spraying equipment and high-pressure water gun equipment are adjusted; a high-pressure water gun is used for primarily flushing a gas distributor channel, and loose dirt and carbon deposit substances on the surface are removed; 6, an environment-friendly cleaning agent is diluted to the recommended concentration, the environment-friendly cleaning agent is evenly sprayed into the gas distributor channel through spray washing equipment, and the gas distributor assembly is cleaned through an ultrasonic cleaning machine, and 6, the cleaned channel is washed again through the high-pressure water gun; and seventhly, the cleaned channel is blow-dried through dry air. According to the invention, carbon deposit and dirt in the channel can be effectively removed, and the smoothness of the channel is recovered, so that the combustion efficiency is improved, and the fuel consumption is reduced.

Description

Technical Field

[0001] The invention relates to a cleaning process for a gas distributor channel of a combustion chamber of a heavy-duty gas turbine, and belongs to the technical field of gas turbine equipment. Background Art

[0002] During the operation of the combustion chamber of a heavy-duty gas engine, the fuel and air need to be premixed and injected before combustion. The uniformity of the fuel mixture helps to improve the efficiency of the gas engine, reduce NOx emissions from the combustion chamber, and reduce fuel consumption. During the actual operation of the gas engine, various factors such as operating conditions, environment, fuel quality, and maintenance may cause the combustion chamber to be unstable and not fully burned, causing carbon deposits to form in the gas distribution channel. This cycle causes more and more carbon deposits on the side walls of the gas distribution channel, which may easily cause carbon deposit particles to fall and block the air outlet of the channel. Carbon deposits not only affect the efficiency of the gas engine, but may also aggravate the emission of harmful substances and pose a potential threat to the environment. Therefore, the present invention is aimed at the research on the cleaning process of the gas distributor channel of a gas turbine, which is of great significance for improving the performance of the gas engine, reducing energy consumption, and reducing pollution. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a cleaning process for the gas distributor channel of the combustion chamber of a heavy-duty gas turbine, thereby solving the above-mentioned technical problems.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a cleaning process for a gas distributor channel of a combustion chamber of a heavy-duty gas turbine, comprising the following steps: Step 1: Preparation before cleaning: First, shut down and disconnect the power supply of the gas turbine to ensure safety; disassemble the combustion chamber casing, take out the combustion chamber assembly, and expose the gas distributor channel; Step 2: Choose environmentally friendly cleaning agents, and adjust ultrasonic cleaning machines, spray cleaning equipment, and high-pressure water gun equipment; Step 3: Use a high-pressure water gun to preliminarily flush the gas distributor channel to remove loose dirt and carbon deposits on the surface; Step 4: Dilute the environmentally friendly cleaning agent to the recommended concentration, spray it evenly into the gas distributor channel through the spray cleaning equipment, and soak for 15-30 minutes; Step 5: Use an ultrasonic cleaner to clean the gas distributor assembly, ensuring that the cleaning agent penetrates into every corner; Step 6: Use a high-pressure water gun to rinse the cleaned channel again to remove residual cleaning agent and dirt; Step 7: Use dry air to blow dry the cleaned channel to ensure that no moisture remains.

[0005] Furthermore, in step 2, the environmentally friendly cleaning agent is a water-based cleaning agent or a bio-based cleaning agent, and its pH value is between 7-10.

[0006] Furthermore, in step three, the initial cleaning flow rate of the high-pressure water gun is set at 20-30 L / min, and the pressure is set at 5-7 MPa.

[0007] Furthermore, in step 4, the recommended concentration ratio of the environmentally friendly cleaning agent to water is 1:10.

[0008] Furthermore, in step five, the frequency of the ultrasonic cleaning machine is set at 40 kHz and the cleaning time is 30 minutes.

[0009] Furthermore, in step six, the high-pressure water gun is used for cleaning again with a flow rate maintained at 20-30 L / min and a pressure maintained at 5-7 MPa.

[0010] Furthermore, in step seven, the compressed air pressure is 0.5 MPA.

[0011] The beneficial effects of the present invention are as follows: in practical applications, through the above-mentioned cleaning process, the flow rate of the gas distributor channel of a heavy-duty gas turbine before cleaning is 50 m³ / h, and after cleaning, the flow rate is increased to 80 m³ / h, and the cleaning efficiency reaches 60%. At the same time, the combustion efficiency is improved by 5%-10%, which greatly reduces fuel consumption and prolongs the service life of the equipment. The present invention can effectively remove carbon deposits and dirt inside the gas distributor channel of the combustion chamber of a heavy-duty gas turbine through a simple and practical cleaning process, restore the smoothness of the channel, thereby improving combustion efficiency, reducing fuel consumption, and providing a strong guarantee for the long-term safe operation of the gas turbine. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical scheme and advantages of the present invention more clear, the present invention is further described in detail by examples below. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0014] In this embodiment 1, a cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber includes the following steps: Step 1: Preparation before cleaning. First, shut down and disconnect the power supply of the gas turbine to ensure safety; disassemble the combustion chamber casing, take out the combustion chamber components, and expose the gas distributor channel; Step 2: Select an environmentally friendly cleaning agent, adjust the ultrasonic cleaning machine, spray cleaning equipment, and high-pressure water gun equipment; the environmentally friendly cleaning agent is a water-based cleaning agent or a bio-based cleaning agent with a pH value of 7; Step 3: Use a high-pressure water gun to perform a preliminary flushing of the gas distributor channel to remove loose dirt and carbon deposits on the surface. The initial cleaning flow of the high-pressure water gun is set at 20 L / min and the pressure is set at 5MPa. Step 4: Dilute the environmentally friendly cleaning agent to the recommended concentration of 1:10, spray it evenly in the gas distributor channel through the spray cleaning equipment, and soak for 15 minutes; Step 5: Use an ultrasonic cleaner to clean the gas distributor components to ensure that the cleaning agent penetrates into every corner; the frequency of the ultrasonic cleaner is set at 40 kHz, and the cleaning time is 30 minutes; Step 6: Use a high-pressure water gun to rinse the cleaned channel again to remove residual cleaning agent and dirt; the high-pressure water gun is cleaned again with a flow rate of 20 L / min and a pressure of 5MPa. Step 7: Use dry air to blow the cleaned channel dry to ensure that there is no residual moisture, and the compressed air pressure is 0.5MPA.

[0015] In this embodiment 2, a cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber includes the following steps: Step 1: Preparation before cleaning. First, shut down and disconnect the power supply of the gas turbine to ensure safety; disassemble the combustion chamber casing, take out the combustion chamber components, and expose the gas distributor channel; Step 2: Select an environmentally friendly cleaning agent, adjust the ultrasonic cleaning machine, spray cleaning equipment, and high-pressure water gun equipment; the environmentally friendly cleaning agent is a water-based cleaning agent or a bio-based cleaning agent with a pH value of 8.5; Step 3: Use a high-pressure water gun to perform a preliminary flushing of the gas distributor channel to remove loose dirt and carbon deposits on the surface. The initial cleaning flow of the high-pressure water gun is set at 25 L / min and the pressure is set at 6MPa. Step 4: Dilute the environmentally friendly cleaning agent to the recommended concentration of 1:10, spray it evenly in the gas distributor channel through the spray cleaning equipment, and soak for 20 minutes; Step 5: Use an ultrasonic cleaner to clean the gas distributor components to ensure that the cleaning agent penetrates into every corner; the frequency of the ultrasonic cleaner is set at 40 kHz, and the cleaning time is 30 minutes; Step 6: Use a high-pressure water gun to rinse the cleaned channel again to remove residual cleaning agent and dirt; the high-pressure water gun is cleaned again with a flow rate of 25 L / min and a pressure of 6MPa. Step 7: Use dry air to blow the cleaned channel dry to ensure that there is no residual moisture, and the compressed air pressure is 0.5MPA.

[0016] In this embodiment 3, a cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber includes the following steps: Step 1: Preparation before cleaning. First, shut down and disconnect the power supply of the gas turbine to ensure safety; disassemble the combustion chamber casing, take out the combustion chamber components, and expose the gas distributor channel; Step 2: Select an environmentally friendly cleaning agent, adjust the ultrasonic cleaning machine, spray cleaning equipment, and high-pressure water gun equipment; the environmentally friendly cleaning agent is a water-based cleaning agent or a bio-based cleaning agent with a pH value of 10; Step 3: Use a high-pressure water gun to perform a preliminary flushing of the gas distributor channel to remove loose dirt and carbon deposits on the surface. The initial cleaning flow of the high-pressure water gun is set at 30L / min and the pressure is set at 7MPa. Step 4: Dilute the environmentally friendly cleaning agent to the recommended concentration of 1:10, spray it evenly in the gas distributor channel through the spray cleaning equipment, and soak for 30 minutes; Step 5: Use an ultrasonic cleaner to clean the gas distributor components to ensure that the cleaning agent penetrates into every corner; the frequency of the ultrasonic cleaner is set at 40 kHz, and the cleaning time is 30 minutes; Step 6: Use a high-pressure water gun to rinse the cleaned channel again to remove residual cleaning agent and dirt; the high-pressure water gun is cleaned again with a flow rate of 30L / min and a pressure of 7MPa. Step 7: Use dry air to blow the cleaned channel dry to ensure that there is no residual moisture, and the compressed air pressure is 0.5MPA.

[0017] In actual application, through the above cleaning process, the flow rate of the gas distributor channel of a heavy-duty gas turbine before cleaning was 50 m³ / h. After cleaning, the flow rate was increased to 80 m³ / h, and the cleaning efficiency reached 60%. At the same time, the combustion efficiency was improved by 5%-10%, which greatly reduced fuel consumption and extended the service life of the equipment. The present invention can effectively remove carbon deposits and dirt inside the gas distributor channel of the combustion chamber of a heavy-duty gas turbine through a simple and practical cleaning process, restore the smoothness of the channel, thereby improving combustion efficiency, reducing fuel consumption, and providing a strong guarantee for the long-term safe operation of the gas turbine.

[0018] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber, characterized in that: The following steps are involved: Step 1: Preparation before cleaning. First, shut down and disconnect the power supply of the gas turbine to ensure safety; Disassemble the combustion chamber housing, remove the combustion chamber assembly, and expose the gas distributor channel; Step 2: Choose environmentally friendly cleaning agents, and adjust ultrasonic cleaning machines, spray cleaning equipment, and high-pressure water gun equipment; Step 3: Use a high-pressure water gun to preliminarily flush the gas distributor channel to remove loose dirt and carbon deposits on the surface; Step 4: Dilute the environmentally friendly cleaning agent to the recommended concentration, spray it evenly into the gas distributor channel through the spray cleaning equipment, and soak for 15-30 minutes; Step 5: Use an ultrasonic cleaner to clean the gas distributor assembly, ensuring that the cleaning agent penetrates into every corner; Step 6: Use a high-pressure water gun to rinse the cleaned channel again to remove residual cleaning agent and dirt; Step 7: Use dry air to blow dry the cleaned channel to ensure that no moisture remains.

2. A cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber according to claim 1, characterized in that: In the step 2, the environmentally friendly cleaning agent is a water-based cleaning agent or a bio-based cleaning agent, and its pH value is between 7-10.

3. A cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber according to claim 1, characterized in that: In step three, the initial cleaning flow rate of the high-pressure water gun is set at 20-30 L / min and the pressure is set at 5-7 MPa.

4. A cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber according to claim 1, characterized in that: In step 4, the recommended concentration ratio of the environmentally friendly cleaning agent to water is 1:

10.

5. A cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber according to claim 1, characterized in that: In step 5, the frequency of the ultrasonic cleaning machine is set at 40 kHz and the cleaning time is 30 minutes.

6. A cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber according to claim 1, characterized in that: In step six, the high-pressure water gun is used for cleaning again with a flow rate maintained at 20-30 L / min and a pressure maintained at 5-7 MPa.

7. A cleaning process for a gas distributor channel of a heavy-duty gas turbine combustion chamber according to claim 1, characterized in that: In the step seven, the compressed air pressure is 0.5 MPA.