CN114833147B - Device and method for cleaning foreign matters in inner cavity of multi-oil-way oil injection rod - Google Patents
Device and method for cleaning foreign matters in inner cavity of multi-oil-way oil injection rod Download PDFInfo
- Publication number
- CN114833147B CN114833147B CN202210413604.3A CN202210413604A CN114833147B CN 114833147 B CN114833147 B CN 114833147B CN 202210413604 A CN202210413604 A CN 202210413604A CN 114833147 B CN114833147 B CN 114833147B
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- China
- Prior art keywords
- sleeve
- injection rod
- oil
- oil injection
- positioning plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002347 injection Methods 0.000 title claims abstract description 95
- 239000007924 injection Substances 0.000 title claims abstract description 95
- 238000004140 cleaning Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000011010 flushing procedure Methods 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 30
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 63
- 239000000446 fuel Substances 0.000 description 27
- 238000003466 welding Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
- B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
- B08B2209/032—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces by the mechanical action of a moving fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention relates to a cleaning device and a cleaning method for foreign matters in an inner cavity of a multi-oil-way oil injection rod, wherein one end of a sleeve in the device is opened, the inner diameter of the sleeve is larger than the outer diameter of the main body end of the oil injection rod, a positioning plate is sealed at the opening end of the sleeve, the positioning plate is vertical to the sleeve, rectangular through grooves are formed in the positioning plate, the rectangular through grooves are distributed in the sleeve, the height of each rectangular through groove is larger than or equal to the outer diameter of the main body of the oil injection rod, and the sum of the thickness of the positioning plate and the length of the inner part of the sleeve is larger than the length of the main body of the oil injection rod; the oil injection rod main body is sleeved with a sleeve, the joint of the locating plate and the oil injection rod outlet part and the main body part is sealed, the other end of the sleeve is provided with a through hole, the through hole is sealed and provided with a nozzle with a hollow columnar structure, the axis of the nozzle and the axis of the sleeve are eccentric distances, and the included angle between the nozzle and the plane where the other end of the sleeve is located is smaller than 90 degrees. The method comprises the steps of connecting a nozzle with a flushing device pipeline, starting the flushing device, enabling flushing liquid to enter an inner cavity of an oil way through an oil injection rod spray hole and form a spiral vortex shape, and flushing foreign matters in the inner cavity.
Description
Technical Field
The invention belongs to the field of processing of fuel injection rods of aeroengines, and particularly relates to a device and a method for cleaning foreign matters in an inner cavity of a multi-oil-way fuel injection rod.
Background
A plurality of oil ways are generally integrated in the fuel injection rod of the aero-engine, each oil way adopts a straight jet, and the aperture of the jet is small and the quantity is large. Because the fuel injection rod of the aeroengine needs welding and heat treatment for stress relief after welding, the processing of the spray holes of the fuel injection rod of the aeroengine is carried out after welding and heat treatment.
As shown in fig. 1a, 1b and 1c, the fuel injection rod of the aero-engine has small aperture and large number of nozzles, and the nozzles have a compound angle, and the nozzles are difficult to process and have the risk of bit breakage because the fuel injection rod of the aero-engine is made of high-temperature alloy; meanwhile, in order to reduce the risk of scrap iron generated by machining remaining in the fuel injection rod of the aeroengine, electric machining is adopted. Although no iron scraps are generated in the electro-machining process, tiny particles still can be generated in the machining process, and residual foreign matters in the inner cavity cannot be completely avoided.
Because each oil way oil inlet of the fuel oil injection rod of the aeroengine presents a certain inclination angle with the oil way, and the nozzle of the fuel oil injection rod of the aeroengine is smaller, each oil way of the fuel oil injection rod is close to a closed cavity, and the fuel oil injection rod is difficult to clean by adopting a conventional forward flushing cleaning method.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the device and the method for cleaning the foreign matters in the inner cavity of the multi-oil-way oil injection rod, which have simple structure and obvious cleaning effect and can be used for cleaning the tiny foreign matters in the inner cavity of the multi-oil-way oil injection rod of the aeroengine.
The invention is realized by the following technical scheme:
the utility model provides a cleaning device of many oil ways oil spout pole inner chamber foreign matter, the oil spout pole include export portion and main part, the exit end of oil spout pole is stepped shaft form with the main part end and distributes in the both ends of oil spout pole, including sleeve, locating plate and nipple;
one end of the sleeve is provided with an opening, the inner diameter of the sleeve is larger than the outer diameter of the main body end of the oil injection rod, the opening end of the sleeve is sealed with a positioning plate, the positioning plate is vertically arranged with the sleeve, the positioning plate is provided with rectangular through grooves, the rectangular through grooves are distributed in the sleeve, the height of the rectangular through grooves is larger than or equal to the outer diameter of the main body of the oil injection rod, and the sum of the thickness dimension of the positioning plate and the length dimension of the inner part of the sleeve is larger than the length of the main body of the oil injection rod;
the oil injection rod is characterized in that a sleeve is sleeved on the main body of the oil injection rod, the locating plate and the joint of the outlet part of the oil injection rod and the main body are arranged in a sealing mode, a through hole is formed in the other end of the sleeve, a nozzle with a hollow columnar structure is arranged in the sealing mode at the through hole, the axis of the nozzle and the axis of the sleeve are eccentric, and the included angle between the nozzle and the plane where the other end of the sleeve is located is smaller than 90 degrees.
Preferably, the locating plate and the sleeve are of an integrated structure, and the joint and the sleeve are of an integrated structure.
Preferably, the outer circle of the connector is provided with a thread or an annular clamping groove.
Preferably, the center of the rectangular through groove is positioned on the central axis of the sleeve, a rectangular annular groove is processed at the outlet of the rectangular through groove, a sealing gasket is arranged in the rectangular annular groove, and the sealing gasket is in a compressed state.
Further, the thickness of the sealing gasket is 1 mm-3 mm thicker than the depth of the rectangular ring groove.
Still further, a plurality of evenly distributed through holes are all offered to the junction of fuel injection pole export portion and main part and locating plate, and locating plate and fuel injection pole are through-hole and corresponding fastener are fixed.
Preferably, the included angle between the joint and the plane of the other end of the sleeve is more than 10 degrees and less than 80 degrees.
The cleaning method for the foreign matters in the inner cavity of the multi-oil-way oil injection rod based on the cleaning device for the foreign matters in the inner cavity of the multi-oil-way oil injection rod comprises the following steps:
step 1, connecting a joint with a pipeline of flushing equipment;
and 2, starting flushing equipment, wherein flushing fluid in the flushing equipment enters the inner cavity of the oil way through the spray hole of the oil injection rod and forms a spiral vortex shape to flush foreign matters in the inner cavity.
Further, the flushing equipment in the step 2 works under 2-10 MPa.
Further, the start-up time of the flushing device is not less than 30s.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the cleaning device for the foreign matters in the inner cavity of the multi-oil-way oil injection rod, one end of the sleeve is opened, and the inner diameter of the sleeve is larger than the outer diameter of the main body end of the oil injection rod, so that the sleeve can be sleeved on the main body of the oil injection rod; the positioning plate is provided with rectangular through grooves in a sealing manner at the opening end of the sleeve, when the rectangular through grooves are distributed in the sleeve and the height of the rectangular through grooves is larger than or equal to the outer diameter of the oil injection rod main body, the oil injection rod can pass through the positioning plate, the sum of the thickness dimension of the positioning plate and the length dimension of the sleeve is larger than the length of the oil injection rod main body, the positioning plate can seal the joint of the oil injection rod outlet part and the main body part, and a space is reserved between the inner wall of the sleeve and the outer circle of the oil injection rod main body when the joint of the oil injection rod main body and the outlet part and the opening part of the sleeve are sealed by the positioning plate; the other end of the sleeve is provided with a through hole, and the through hole is provided with a nozzle with a hollow columnar structure in a sealing way, so that when the nozzle and the axis of the sleeve are eccentric, and the included angle between the nozzle and the plane of the other end of the sleeve is smaller than 90 degrees, liquid flow entering the sleeve through the nozzle can take on spiral vortex, and then oil flow entering the inner cavity of the oil-spraying rod oil-way through the spray hole also has certain spiral vortex, the inner cavity of the oil-way can be fully flushed, and residual tiny foreign matters in the inner cavity of the oil-way can be driven to move towards the outlet of the oil-spraying rod oil-way, so that the cleaning work of the foreign matters in the inner cavity is completed.
The invention relates to a cleaning method for foreign matters in an inner cavity of a multi-oil-way oil injection rod, which is characterized in that a nozzle is connected with a pipeline of flushing equipment, flushing fluid in the flushing equipment can enter a sleeve through the nozzle after the flushing equipment is started, then enters the inner cavity of the oil-way oil injection rod through a spray hole and forms a spiral vortex shape, the foreign matters in the inner cavity are flushed completely, and the cleaning work for the foreign matters in the inner cavity is completed. The invention has simple operation and obvious cleaning effect, and can be used for quickly cleaning tiny foreign matters in the inner cavity of the multi-oil-way oil injection rod of the aeroengine.
Drawings
FIG. 1a is a left side view of a multi-gallery fuel injection rod according to the present invention.
FIG. 1b is a cross-sectional view of a multi-gallery fuel injection rod according to the present invention.
FIG. 1c is a cross-sectional view at A-A in FIG. 1 b.
Fig. 2a is a right side view of the cleaning device according to the present invention.
Fig. 2b is a cross-sectional view of a cleaning device according to the present invention.
Fig. 2c is a left side view of the cleaning device according to the present invention.
FIG. 3 is a schematic diagram of the installation of the fuel injection rod and the cleaning device according to the present invention.
In the figure: sleeve 1, locating plate 2, nipple 3, sealing pad 4.
Detailed Description
For a clearer understanding of the technical characteristics, objects and effects of the present invention, a specific embodiment of the invention will now be described with reference to the accompanying drawings, which are illustrative of the invention and not limiting.
Since fig. 1a, 1b and 1c show the complete structure, the inner cavity and the nozzle of one of the fuel injection rods, the fuel injection rod comprises an outlet portion and a main body portion, and the outlet end and the main body end of the fuel injection rod are in a stepped shaft shape and distributed at two ends of the fuel injection rod. The fuel injection rod is provided with four oil ways, the positions of each outlet are different, wherein the two sides of the width direction of the fuel injection rod can be seen from fig. 1b, the horizontal positions of the two sides and the axis of each oil way are uniformly distributed with a plurality of spray holes communicated with the oil ways along the length direction of the fuel injection rod, so the cleaning device for the tiny foreign matters in the inner cavity of the multi-oil-way fuel injection rod of the aeroengine comprises a main sleeve 1, a positioning plate 2 and a nozzle 3.
As shown in fig. 2b, the sleeve 1 has a barrel-shaped structure, one end of which is provided with an opening, and the inner diameter of which is larger than the outer diameter of the fuel injection rod (i.e., the main body portion). The locating plate 2 of a thin plate structure is arranged at the opening end of the sleeve 1 in a sealing way, the locating plate 2 is perpendicular to the sleeve 1, the locating plate 2 is connected with the sleeve 1 into a whole through integrated forming, argon arc welding or other modes, a through hole is formed in the other end of the sleeve 1, a nozzle 3 of a hollow short cylinder structure is arranged at the through hole, threads or annular clamping grooves are machined on the outer circle of the nozzle 3, the nozzle 3 is connected with a joint of flushing equipment, and the nozzle 3 is connected with the sleeve 1 into a whole through integrated forming, welding or other modes. As shown in fig. 3, a sleeve 1 is sleeved on the spray rod of the oil spray rod, and a positioning plate 2 and the joint of the outlet part of the oil spray rod and the spray rod are arranged in a sealing way.
The locating plate 2 is attached to the mounting plate of the part fuel injection rod, a rectangular through groove is formed in the middle of the locating plate 2 and distributed in the sleeve 1, the center of the rectangular through groove is located on the central axis of the sleeve 1, and the height of the rectangular through groove is larger than or equal to the outer diameter of the injection rod, so that the part fuel injection rod can pass through. The sum of the thickness dimension of the locating plate and the length dimension of the interior of the sleeve 1 is larger than the length of the oil injection rod main body. As shown in fig. 2c, a rectangular annular groove is processed along the outlet of the rectangular through groove, a sealing gasket 4 is arranged in the rectangular annular groove, and the sealing gasket 4 is in a compressed state; the periphery of the mounting plate 2 is uniformly provided with 6 through holes corresponding to mounting holes on a part fuel injection rod mounting plate (namely the joint of the fuel injection rod outlet part and the main body part), and the positioning plate 2 and the fuel injection rod are fixed through the through holes and corresponding fasteners.
As shown in fig. 2a, the nozzle 3 has a certain eccentricity delta with the axial axis of the sleeve 1 and an included angle alpha with the end surface of the sleeve 1, and the alpha satisfies the following relation:
10°＜α＜80°，
so that the liquid flow entering the sleeve 1 through the nozzle 3 presents a spiral vortex shape, the oil flow entering the inner cavity of the oil path of the part oil injection rod through the spray hole also has a certain spiral vortex shape, the inner cavity of the oil path can be fully flushed, and the residual tiny foreign matters in the inner cavity of the oil path are driven to move to the outlet of the oil path of the oil injection rod.
The sealing gasket 4 is arranged in a rectangular annular groove of the positioning plate 2 and is of a hollow rectangular sheet structure, and the part oil injection rod passes through the rectangular through groove in the center. The sealing gasket 4 is made of rubber or polytetrafluoroethylene, and the thickness of the sealing gasket is 1 mm-3 mm thicker than the depth of the rectangular ring groove of the mounting plate 2.
The invention relates to a cleaning device for tiny foreign matters in an inner cavity of a multi-oil-way oil injection rod of an aeroengine, which comprises the following steps:
step 1, installing and fixing an oil injection rod: the sealing gasket 4 is arranged in the rectangular annular groove of the mounting plate 2, then the part oil injection rod is arranged in the sleeve 1 through the sealing gasket 4 and the rectangular through groove of the mounting plate 2, the part oil injection rod mounting plate corresponds to the through holes of the sealing gasket 4 and the positioning plate 2, and the sealing gasket 4 is compressed by fastening with universal screws to play a sealing role.
And 2, connecting the nozzle 3 with a pipeline nozzle of the flushing equipment.
And 3, starting flushing equipment, boosting the pressure, wherein the pressure is generally 2-10 MPa, flushing an oil way by using liquid for at least 30s, wrapping an oil injection rod outlet by using industrial silk meeting the FZ66201 standard, checking the effluent oil flow, and obtaining qualified flushing when no visual foreign matter is visible on the surface of the industrial silk.
Example 1
The invention relates to a cleaning device for tiny foreign matters in an inner cavity of a multi-oil-way oil injection rod of an aeroengine, which comprises the following steps:
and step 1, installing and fixing an oil injection rod according to the process.
And 2, connecting the nozzle 3 with a pipeline nozzle of the flushing equipment.
And 3, starting flushing equipment, boosting the pressure to 3MPa, flushing an oil way, flushing for 1 minute, wrapping an oil injection rod outlet by industrial silk meeting the FZ66201 standard after flushing, checking the effluent oil flow, and ensuring that no foreign matters are visible on the surface of the industrial silk.
Claims (3)
1. The method for cleaning the foreign matters in the inner cavity of the multi-oil-way oil injection rod is characterized by comprising the steps of cleaning a cleaning device for the foreign matters in the inner cavity of the multi-oil-way oil injection rod, wherein the oil injection rod comprises an outlet part and a main body part, the outlet end and the main body end of the oil injection rod are in a stepped shaft shape and are distributed at the two ends of the oil injection rod, two sides of the width direction of the oil injection rod are horizontally positioned with the axis of each oil way, a plurality of spray holes communicated with the oil ways are uniformly distributed along the length direction of the oil injection rod, and the cleaning device comprises a sleeve (1), a positioning plate (2) and a nozzle (3);
one end of the sleeve (1) is arranged in an opening way, the inner diameter of the sleeve (1) is larger than the outer diameter of the main body part of the oil injection rod, a positioning plate (2) is sealed at the opening end of the sleeve (1), the positioning plate (2) is perpendicular to the sleeve (1), the positioning plate (2) is provided with rectangular through grooves, the rectangular through grooves are distributed in the sleeve (1), the height of each rectangular through groove is larger than or equal to the outer diameter of the oil injection rod main body, the center of each rectangular through groove is located on the central axis of the sleeve (1), a rectangular annular groove is processed at the outlet of each rectangular through groove, a sealing gasket (4) is arranged in each rectangular annular groove, the thickness of each sealing gasket (4) is 1-3 mm thicker than the depth of each rectangular annular groove, and the sum of the thickness of the positioning plate (2) and the length of the inner part of the sleeve (1) is larger than the length of the oil injection rod main body;
the oil injection rod is characterized in that a sleeve (1) is sleeved on a main body of the oil injection rod, a locating plate (2) is in sealing arrangement with a joint of an outlet part of the oil injection rod and the main body, a sealing gasket (4) is in a compressed state, a through hole is formed in the other end of the sleeve (1), a joint (3) of a hollow columnar structure is arranged at the through hole in a sealing mode, an eccentric distance is reserved between the joint (3) and the axis of the sleeve (1), and an included angle between the joint (3) and the plane of the other end of the sleeve (1) is larger than 10 degrees and smaller than 80 degrees;
the joint of the outlet part of the oil injection rod and the main body part and the positioning plate (2) are provided with a plurality of through holes which are uniformly distributed, and the positioning plate (2) and the oil injection rod are fixed through the through holes and corresponding fasteners;
the method specifically comprises the following steps:
step 1, a sealing gasket (4) is arranged in a rectangular annular groove of a positioning plate (2), then an oil injection rod is arranged in a sleeve (1) through the sealing gasket (4) and a rectangular through groove of the positioning plate (2), an oil injection rod mounting plate corresponds to through holes of the sealing gasket (4) and the positioning plate (2), and is fastened by a universal screw, so that the sealing gasket (4) is compressed to play a sealing role;
step 2, connecting the connector (3) with a pipeline of the flushing equipment;
and 3, starting the flushing equipment, enabling flushing liquid in the flushing equipment to enter the inner cavity of the oil way through the spray hole of the oil spraying rod under 2-10 MPa to form a spiral vortex shape, and flushing the foreign matters in the inner cavity for at least 30 seconds.
2. The method for cleaning foreign matters in the inner cavity of the multi-oil-way oil injection rod according to claim 1, wherein the positioning plate (2) and the sleeve (1) are of an integrated structure, and the joint (3) and the sleeve (1) are of an integrated structure.
3. The method for cleaning foreign matters in the inner cavity of the multi-oil-way oil injection rod according to claim 1, wherein the outer circle of the joint nozzle (3) is provided with threads or annular clamping grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210413604.3A CN114833147B (en) | 2022-04-19 | 2022-04-19 | Device and method for cleaning foreign matters in inner cavity of multi-oil-way oil injection rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210413604.3A CN114833147B (en) | 2022-04-19 | 2022-04-19 | Device and method for cleaning foreign matters in inner cavity of multi-oil-way oil injection rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114833147A CN114833147A (en) | 2022-08-02 |
| CN114833147B true CN114833147B (en) | 2024-04-02 |
Family
ID=82566109
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210413604.3A Active CN114833147B (en) | 2022-04-19 | 2022-04-19 | Device and method for cleaning foreign matters in inner cavity of multi-oil-way oil injection rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114833147B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11262736A (en) * | 1998-03-17 | 1999-09-28 | Heiwa Bussan Kk | Apparatus for washing inner wall of piping, storage container and the like |
| CN103370029A (en) * | 2010-11-12 | 2013-10-23 | 牙科保健创新公司 | Dissolution chamber for cleaning tablets |
| CN112570394A (en) * | 2020-11-25 | 2021-03-30 | 哈尔滨汽轮机厂有限责任公司 | Method for cleaning nozzle of combustion chamber of heavy-duty gas turbine |
| CN213349971U (en) * | 2020-09-04 | 2021-06-04 | 迪瑞医疗科技股份有限公司 | Probe cleaning device |
-
2022
- 2022-04-19 CN CN202210413604.3A patent/CN114833147B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11262736A (en) * | 1998-03-17 | 1999-09-28 | Heiwa Bussan Kk | Apparatus for washing inner wall of piping, storage container and the like |
| CN103370029A (en) * | 2010-11-12 | 2013-10-23 | 牙科保健创新公司 | Dissolution chamber for cleaning tablets |
| CN213349971U (en) * | 2020-09-04 | 2021-06-04 | 迪瑞医疗科技股份有限公司 | Probe cleaning device |
| CN112570394A (en) * | 2020-11-25 | 2021-03-30 | 哈尔滨汽轮机厂有限责任公司 | Method for cleaning nozzle of combustion chamber of heavy-duty gas turbine |
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| Publication number | Publication date |
|---|---|
| CN114833147A (en) | 2022-08-02 |
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