CN113833696A - Mounting method for final assembly blade of third-stage rotor of high-pressure compressor - Google Patents
Mounting method for final assembly blade of third-stage rotor of high-pressure compressor Download PDFInfo
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- CN113833696A CN113833696A CN202111250756.8A CN202111250756A CN113833696A CN 113833696 A CN113833696 A CN 113833696A CN 202111250756 A CN202111250756 A CN 202111250756A CN 113833696 A CN113833696 A CN 113833696A
- Authority
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- China
- Prior art keywords
- blade
- wheel disc
- final assembly
- pressure compressor
- adhesive primer
- Prior art date
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000853 adhesive Substances 0.000 claims abstract description 41
- 230000001070 adhesive effect Effects 0.000 claims abstract description 41
- 238000004073 vulcanization Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000002987 primer (paints) Substances 0.000 claims description 43
- 229920000742 Cotton Polymers 0.000 claims description 17
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 239000000565 sealant Substances 0.000 claims description 11
- 238000007598 dipping method Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 claims description 4
- 229920001342 Bakelite® Polymers 0.000 claims description 3
- 239000004637 bakelite Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000004590 silicone sealant Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The mounting method for the final assembly blade of the third-stage rotor of the high-pressure compressor is characterized in that the surface of a blade final assembly connecting part is cleaned, the primary coating bonding process is controlled, an adhesive is reasonably prepared and used, and vulcanization and other treatments are carried out after the blade is mounted, so that the final assembly process quality of the blade is greatly improved.
Description
Technical Field
The invention belongs to the technical field of manufacturing of aero-engines, and particularly relates to an installation method for a third-stage rotor final assembly blade of a high-pressure compressor.
Background
The aircraft engine rotor is a core part, the blade assembly technology needs a lot of precision work, and the mode of the third-stage rotor final assembly blade of the high-pressure compressor is as follows: and finally, adhering the tenon part of the blade and the mortise of the third-stage wheel disc of the high-pressure compressor by using sealant. In the current operation flow, a reliable installation method is not provided temporarily, the quality of a plurality of procedures is high and low, the assembly experience of an assembly worker is rich, the assembly quality has certain defects, and the phenomenon that the blade falls off easily occurs in the subsequent high-speed rotation process of the engine, so that the whole engine is finally scrapped.
Disclosure of Invention
In order to solve the technical problem, the invention provides an installation method for a third-stage rotor final assembly blade of a high-pressure compressor.
The invention is realized by the following technical scheme.
The invention provides an installation method for a third-stage rotor final assembly blade of a high-pressure compressor, which comprises the following steps: blowing clean a wheel disc mortise and a blade to be installed by using dry compressed air; step two, wiping the wheel disc mortise and the blade tenon clean by using absorbent cotton dipped with solvent oil for rubber industry, immediately wiping the wheel disc mortise and the blade tenon dry by using the clean absorbent cotton, repeating the steps until the wiped absorbent cotton has no stain, and then cleaning and wiping the wheel disc mortise and the blade tenon dry by using acetone; step three, drying the wheel disc and the blades in the air until all acetone is volatilized; dipping NJD-9 adhesive primer, performing primer coating on the connecting part of the wheel disc mortise and the blade tenon, and then placing in the air for 45-60 minutes to dry the NJD-9 adhesive primer; dipping the NJD-11 adhesive primer, performing primer coating on the part coated with the NJD-9 adhesive primer, and then placing in the air for 30-40 minutes to dry the NJD-9 adhesive primer; mixing the sealant and the vulcanizing agent according to the mass ratio of 100: 2.5-3.5, uniformly stirring, and then putting into a vacuum drying oven for vacuumizing and removing bubbles; uniformly coating the processed mixture of the sealant and the vulcanizing agent on the bottom surface of the tenon of the blade and the surface of the mortise of the wheel disc according to the number mounting position of the final assembly blade, and then loading the blade into the corresponding mortise to form a wheel disc and blade assembly; and step eight, after all the blades are installed, putting the installed wheel disc and blade assembly under the environmental conditions of the temperature of 20-30 ℃ and the relative humidity of 30-80% for vulcanization for 72 hours, and then taking out the assembly, wherein the blade assembly is completed.
Further, the sealant used in the sixth step is an HM307 two-component condensation type silicone sealant.
Further, in the fourth step, any one of a hairbrush, absorbent cotton and medical gauze is selected to be dipped in NJD-9 adhesive primer, and then primer coating is carried out.
Further, in the fifth step, any one of a hairbrush, absorbent cotton and medical gauze is selected to be dipped in NJD-11 adhesive primer and then is subjected to primer coating.
Furthermore, in the fourth step and the fifth step, the adhesive primer is not dried after being placed in the air for the required time, and the adhesive primer is dried by using a cold air baffle of an electric blower.
Furthermore, in the seventh step, after the blade is installed in the corresponding mortise, a scraper is also needed to scrape the overflowed mixture.
Furthermore, in the fourth step and the fifth step, the adhesive primer is not dried after being placed in the air for the required time, and the placing time is prolonged until the adhesive primer is dried.
Further, in the eighth step, the assembled wheel disc and blade assembly can be vulcanized for 24 hours under the environmental conditions of the temperature of 20-30 ℃ and the relative humidity of 30-80%, and then vulcanized for 24 hours under the environmental conditions of the temperature of 70 ℃ and the relative humidity of 30-80% and taken out.
Further, in the seventh step, when the blade is installed in the corresponding mortise, the blade is tapped into the mortise of the wheel disc by using a bakelite rod with the mass not exceeding 40 g.
The invention has the beneficial effects that: the invention greatly improves the assembly process quality of the blade by cleaning the surface of the joint part of the blade assembly, controlling the process of bonding the primary coat, reasonably allocating and using the adhesive and carrying out treatments such as vulcanization and the like after the blade is installed.
Drawings
FIG. 1 is a schematic view of a blade and disk mounting arrangement of the present invention;
FIG. 2 is a schematic cross-sectional view of a blade and disk connection according to the present invention;
FIG. 3 is a distribution diagram of the initial assembly of third stage high pressure compressor rotor blades in accordance with the present invention;
FIG. 4 is a final assembly third stage high pressure compressor rotor blade profile of the present invention;
in the figure: 1-blade and 2-wheel disk.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, which is a schematic view of an installation structure of a blade and a wheel disc of the present invention, before blade final assembly, preparation works such as blade selection are required, specifically, the following contents are provided:
1. weighing: and sequentially weighing the mass of the three-stage blade on an electronic balance, recording an actual value, and marking on a blade basin. The third-stage leaves are numbered according to the sequence of decreasing mass, and the leaf basins are marked with the sequence numbers by chemical pencils.
2. Blade matching and initial assembly: the third stage blades were arranged on a clean bench in descending order of mass, with the blades arranged as shown in fig. 3. The 1 st blade is arranged in the No. 1 mortise.
3. Static balance adjustment: and (3) mounting the balance clamp on a balance machine, aligning the excircle and end face runout of the positioning surface of the clamp to be not more than 0.02, and carrying out dynamic balance on the clamp, wherein the unbalance is not more than 3 g.mm. The method comprises the steps of carrying out static balance on parts, measuring initial unbalance, recording actual values, allowing the positions of blades to be changed in the static balance process, meeting the matching requirement of the blades, allowing new blades to be replaced, enabling the mass of the new blades to be increased or decreased compared with that of original blades, enabling the mass difference between the newly replaced blades and the original blades to be (-0.3 to +0.3) g, and meeting the matching requirement of the blades. When the static balance of the parts is carried out, the rotating speed is not less than 900r/min, and the rotating direction is clockwise and anticlockwise.
4. Blade decomposition and marking: after the blades are disassembled, the corresponding disc groove numbers are marked on the blade tenons by using a vibration pen. Cleaning the blades, and boxing the blades in sequence.
After the blade is prepared, the process contents for assembling the blade are as follows:
blowing clean a wheel disc mortise and a blade to be installed by using dry compressed air;
step two, wiping the wheel disc mortise and the blade tenon clean by using absorbent cotton dipped with solvent oil for rubber industry, immediately wiping the wheel disc mortise and the blade tenon dry by using the clean absorbent cotton, repeating the steps until the wiped absorbent cotton has no stain, and then cleaning and wiping the wheel disc mortise and the blade tenon dry by using acetone;
step three, drying the wheel disc and the blades in the air until all acetone is volatilized;
dipping NJD-9 adhesive primer, performing primer coating on the connecting part of the wheel disc mortise and the blade tenon, and then placing in the air for 45-60 minutes to dry the NJD-9 adhesive primer; selecting any one of a brush, absorbent cotton and medical gauze, dipping the brush, the absorbent cotton and the medical gauze in NJD-9 adhesive primer, and then performing primer coating; after the adhesive is placed in the air for the time meeting the requirement, the adhesive is still not dried, and the adhesive is dried by using a cold air baffle of an electric blower, and in addition, the placing time can be prolonged until the adhesive is dried;
dipping the NJD-11 adhesive primer, performing primer coating on the part coated with the NJD-9 adhesive primer, and then placing in the air for 30-40 minutes to dry the NJD-9 adhesive primer; selecting any one of a brush, absorbent cotton and medical gauze, dipping the brush, the absorbent cotton and the medical gauze in NJD-11 adhesive primer, and then performing primer coating; after the adhesive is placed in the air for the time meeting the requirement, the adhesive is still not dried, and the adhesive is dried by using a cold air baffle of an electric blower, and in addition, the placing time can be prolonged until the adhesive is dried;
mixing the sealant and the vulcanizing agent according to the mass ratio of 100: 2.5-3.5, uniformly stirring, and then putting into a vacuum drying oven for vacuumizing and removing bubbles; the sealant used is HM307 two-component condensed type silicone sealant;
uniformly coating the mixture of the processed sealant and the vulcanizing agent on the bottom surface of the tenon of the blade and the surface of the mortise of the wheel disc by using a pneumatic or manual glue gun according to the number mounting position of the final blade, then loading the blade into the corresponding mortise, and lightly tapping the blade into the mortise of the wheel disc by using a bakelite rod with the mass not exceeding 40g so as to form a wheel disc and blade assembly; after the blades are arranged in the corresponding mortises, a scraper is also needed to scrape the overflowed mixture;
and step eight, after all the blades are installed, placing the installed wheel disc and blade assembly under the environmental conditions of the temperature of 20-30 ℃ and the relative humidity of 30-80% for vulcanization for 72 hours and then taking out, or placing the installed wheel disc and blade assembly under the environmental conditions of the temperature of 20-30 ℃ and the relative humidity of 30-80% for vulcanization for 24 hours, then placing the assembly under the environmental conditions of the temperature of 70 ℃ and the relative humidity of 30-80% for vulcanization for 24 hours and then taking out, and at this time, finishing the blade assembly.
After final assembly, as shown in fig. 1, traces of sealant application are allowed on surfaces F and P.
Claims (9)
1. A mounting method for a final assembly blade of a third-stage rotor of a high-pressure compressor is characterized by comprising the following steps:
blowing clean a wheel disc mortise and a blade to be installed by using dry compressed air;
step two, wiping the wheel disc mortise and the blade tenon clean by using absorbent cotton dipped with solvent oil for rubber industry, immediately wiping the wheel disc mortise and the blade tenon dry by using the clean absorbent cotton, repeating the steps until the wiped absorbent cotton has no stain, and then cleaning and wiping the wheel disc mortise and the blade tenon dry by using acetone;
step three, drying the wheel disc and the blades in the air until all acetone is volatilized;
dipping NJD-9 adhesive primer, performing primer coating on the connecting part of the wheel disc mortise and the blade tenon, and then placing in the air for 45-60 minutes to dry the NJD-9 adhesive primer;
dipping the NJD-11 adhesive primer, performing primer coating on the part coated with the NJD-9 adhesive primer, and then placing in the air for 30-40 minutes to dry the NJD-9 adhesive primer;
mixing the sealant and the vulcanizing agent according to the mass ratio of 100: 2.5-3.5, uniformly stirring, and then putting into a vacuum drying oven for vacuumizing and removing bubbles;
uniformly coating the processed mixture of the sealant and the vulcanizing agent on the bottom surface of the tenon of the blade and the surface of the mortise of the wheel disc according to the number mounting position of the final assembly blade, and then loading the blade into the corresponding mortise to form a wheel disc and blade assembly;
and step eight, after all the blades are installed, putting the installed wheel disc and blade assembly under the environmental conditions of the temperature of 20-30 ℃ and the relative humidity of 30-80% for vulcanization for 72 hours, and then taking out the assembly, wherein the blade assembly is completed.
2. The method of claim 1 for mounting a final assembly vane of a third stage rotor of a high pressure compressor, wherein: the sealant used in the sixth step is an HM307 two-component condensed type silicone sealant.
3. The method of claim 1 for mounting a final assembly vane of a third stage rotor of a high pressure compressor, wherein: in the fourth step, any one of the hair brush, the absorbent cotton and the medical gauze is selected to dip in the NJD-9 adhesive primer and then the primer is applied.
4. The method of claim 1 for mounting a final assembly vane of a third stage rotor of a high pressure compressor, wherein: and in the fifth step, any one of a brush, absorbent cotton and medical gauze is selected to be dipped in NJD-11 adhesive primer and then is subjected to primer coating.
5. The method of claim 1 for mounting a final assembly vane of a third stage rotor of a high pressure compressor, wherein: in the fourth step and the fifth step, the adhesive primer is not dried after the adhesive primer is placed in the air for the required time, and the adhesive primer is dried by using a cold air baffle of an electric blower.
6. The method of claim 1 for mounting a final assembly vane of a third stage rotor of a high pressure compressor, wherein: and seventhly, after the blades are arranged in the corresponding mortises, scraping overflowing mixture by using a scraper.
7. The method of claim 1 for mounting a final assembly vane of a third stage rotor of a high pressure compressor, wherein: in the fourth step and the fifth step, the adhesive primer is not dried after the adhesive primer is placed in the air for the required time, and the placing time is prolonged until the adhesive primer is dried.
8. The method of claim 1 for mounting a final assembly vane of a third stage rotor of a high pressure compressor, wherein: in the step eight, the wheel disc and blade assembly after being installed can be placed under the environment conditions of the temperature of 20-30 ℃ and the relative humidity of 30-80% for vulcanization for 24 hours, then placed under the environment conditions of the temperature of 70 ℃ and the relative humidity of 30-80% for vulcanization for 24 hours, and then taken out.
9. The method of claim 1 for mounting a final assembly vane of a third stage rotor of a high pressure compressor, wherein: and seventhly, when the blade is installed in the corresponding mortise, the blade is tapped into the mortise of the wheel disc by using a bakelite rod with the mass not exceeding 40 g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111250756.8A CN113833696A (en) | 2021-10-26 | 2021-10-26 | Mounting method for final assembly blade of third-stage rotor of high-pressure compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111250756.8A CN113833696A (en) | 2021-10-26 | 2021-10-26 | Mounting method for final assembly blade of third-stage rotor of high-pressure compressor |
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| Publication Number | Publication Date |
|---|---|
| CN113833696A true CN113833696A (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111250756.8A Pending CN113833696A (en) | 2021-10-26 | 2021-10-26 | Mounting method for final assembly blade of third-stage rotor of high-pressure compressor |
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| CN (1) | CN113833696A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5873702A (en) * | 1997-06-20 | 1999-02-23 | Siemens Westinghouse Power Corporation | Apparatus and method for sealing gas turbine blade roots |
| CN1920311A (en) * | 2005-08-24 | 2007-02-28 | 通用电气公司 | Methods and apparatus for assembling gas turbine engines |
| CN101982247A (en) * | 2010-11-15 | 2011-03-02 | 陕西飞机工业（集团）有限公司 | Method for sealing and preventing integral wing tank of large-medium transport from corrosion |
| CN109398727A (en) * | 2017-08-15 | 2019-03-01 | 中航贵州飞机有限责任公司 | A kind of method of detachable lid sealing assembly |
-
2021
- 2021-10-26 CN CN202111250756.8A patent/CN113833696A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5873702A (en) * | 1997-06-20 | 1999-02-23 | Siemens Westinghouse Power Corporation | Apparatus and method for sealing gas turbine blade roots |
| CN1920311A (en) * | 2005-08-24 | 2007-02-28 | 通用电气公司 | Methods and apparatus for assembling gas turbine engines |
| CN101982247A (en) * | 2010-11-15 | 2011-03-02 | 陕西飞机工业（集团）有限公司 | Method for sealing and preventing integral wing tank of large-medium transport from corrosion |
| CN109398727A (en) * | 2017-08-15 | 2019-03-01 | 中航贵州飞机有限责任公司 | A kind of method of detachable lid sealing assembly |
Non-Patent Citations (2)
| Title |
|---|
| 代晓瑛;孙小波;王波;: "防腐涂料和密封剂相容性试验研究", 涂料工业, no. 03, pages 72 - 76 * |
| 刘梅;潘大海;王恒芝;孙全吉;范召东;: "耐高温有机硅密封剂耐热性能研究", 航天制造技术, no. 03, pages 5 - 7 * |
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