CN113176085B - Aeroengine hot end turbine hollow blade profile detection device - Google Patents
Aeroengine hot end turbine hollow blade profile detection device Download PDFInfo
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- CN113176085B CN113176085B CN202110479041.3A CN202110479041A CN113176085B CN 113176085 B CN113176085 B CN 113176085B CN 202110479041 A CN202110479041 A CN 202110479041A CN 113176085 B CN113176085 B CN 113176085B
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- rotary drum
- blade
- sleeve
- water tank
- rack
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- 238000001514 detection method Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000000428 dust Substances 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims description 18
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 239000012498 ultrapure water Substances 0.000 abstract description 5
- 229910021642 ultra pure water Inorganic materials 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a device for detecting the profile of a hollow blade of a hot-end turbine of an aeroengine, which relates to the technical field of automatic detection equipment and comprises a frame, a rotary drum mounting part, a dust removing mechanism and a detection mechanism. According to the invention, through arranging the mounting part, impurities such as dust possibly attached to an inner runner of a blade to be detected are removed without disassembly, through arranging the detection mechanism to drive the movable seat to be positioned accurately on the upper thread end face of the mounting part of the rotary drum in cooperation with the driving motor, ultrapure water is filled into the sleeve in the joint process of the sleeve and the tenons of the blades, the sleeve is separated from the water level face of the water tank under the drive of the output end of the hydraulic cylinder, and further, the nondestructive and rapid quality detection of each blade without disassembly is further realized; by reading the water storage reading in the counterweight measuring cylinder in the vertical state, whether the inner runner structure of the blade to be detected has the quality problems of material deficiency, carbon deposit and the like or not is accurately judged, and the cost of detection equipment is greatly reduced.
Description
Technical Field
The invention relates to the technical field of automatic detection equipment, in particular to a device for detecting the profile of a hollow blade of a hot-end turbine of an aero-engine.
Background
The working condition of the hot-end turbine blade in the aeroengine is very bad, the hollow structure arranged in the inner runner is subjected to huge tensile stress, torsional stress and thermal corrosion under the condition of ensuring stable heat dissipation under the impact of high-pressure corrosive fuel gas, so that necessary quality detection is required to be carried out after a certain period of use to judge whether the material of the inner runner of the blade is lost or carbon deposit is generated, the quality detection of the hollow blade is carried out by adopting an industrial CT tomographic scanning image method at present, and three-dimensional information of the blade is established according to tomographic images at different positions by taking the attenuation coefficient of X rays as the basis.
However, the industrial CT tomographic scanning image method adopted in the prior art has certain defects in the long-term use process of my department: 1. when the turbine blades are conventionally detected, each blade still needs to be detached from the turbine disc, all the blades are removed in dust and impurities and then detected one by one, but the process steps of detaching from the turbine disc, positioning during detection, fault section scanning and modeling comparison are longer, so that the time for acquiring data in the whole process is longer; 2. although the nondestructive measurement of the profile structure inside the hollow blade can be realized, the spatial resolution of the measurement system is lower, errors generated in the comparison process with a standard measurement database are not easy to find in time, and the equipment cost is higher.
Disclosure of Invention
The invention aims to provide a device for detecting the profile of a hollow blade of a hot-end turbine of an aeroengine, which aims to solve the defects caused by the prior art.
The utility model provides an aeroengine hot end turbine hollow blade profile detection device, includes frame, rotary drum installation department, dust removal mechanism and detection mechanism, rotary drum installation department passes through the mounting bracket rotation and sets up in the frame, dust removal mechanism installs on rotary drum installation department to be used for carrying out the clearance before detecting the dust that adheres to on the interior runner of blade, detection mechanism installs in the frame, and is used for carrying out the profile state detection of interior runner to the blade.
Preferably, the rotary drum installation department is hollow structure, and its left side part on the horizontal direction is smooth terminal surface, and middle part is the screw thread terminal surface, and its right side part is smooth terminal surface, and a plurality of evenly set up the air vent has all been seted up to the terminal surface of the left side part of rotary drum installation department and middle part, one side is fixed with spacing guide piece on the inner wall of air vent, and the movable closure piece is installed through the torsional spring rotation to the opposite side on the inner wall of air vent, and dodges the mouth has been seted up to the terminal surface of the right side part of rotary drum installation department.
Preferably, the dust removing mechanism comprises a driving motor, a first rack and a piston, the driving motor is arranged on the mounting frame, the output end of the driving motor is connected with a gear, the first rack is arranged on the rotary drum mounting part in a sliding manner and meshed with the gear, and the piston is arranged on the rotary drum mounting part in a sliding manner and fixed with one end of the first rack.
Preferably, the detection mechanism comprises a water tank, a hydraulic cylinder, a movable seat, a counterweight measuring cylinder and a sleeve, wherein the water tank is arranged on the bottom wall of the frame, a movable baffle is arranged on the left side of the water tank in a rotating mode, a water supplementing valve is arranged at the right side end of the water tank, the hydraulic cylinder is rotatably arranged at the upper end of the water tank, an output end of the hydraulic cylinder is rotatably connected with a pushing block, the other end of the pushing block is fixed on the mounting frame, the movable seat is arranged on the mounting part of the rotary cylinder, a limiting clamping head is elastically arranged on the movable seat, an air outlet matched with an air vent is formed in the movable seat, a follow-up piece is arranged on the other end of the movable seat in a rotating mode, a rack II meshed with a gear is fixedly arranged at the side end of the follow-up piece, a pushing head is elastically arranged in the movable seat, a guide rod circumferentially arranged on the movable seat in a sliding mode, the side end of the counterweight measuring cylinder is slidably arranged on the guide rod, the port side end of the sleeve is communicated with a counterweight of the measuring cylinder, and a tension spring is arranged between the movable seat and the guide rod.
Preferably, the first rack and the second rack are kept parallel.
Preferably, the water level line in the water tank is consistent with the tenon end face of the blade.
Preferably, the ports of the sleeve are matched with the tenon end surfaces of the blades.
Preferably, when the output end of the hydraulic cylinder is in a furled state, the sleeve is in a vertical state, and when the output end of the hydraulic cylinder is in an extended state, the counterweight measuring cylinder is in a vertical state.
The invention has the advantages that: (1) The rotary drum installation part is of a hollow structure, the left side part of the rotary drum installation part in the horizontal direction is a smooth end surface, the middle part of the rotary drum installation part is a threaded end surface, the driving motor drives the piston to push in the rotary drum installation part, when the pushing head in the movable seat moves to the vent hole position, the pushing head pushes the movable sealing piece in the vent hole to be separated from the limiting guide piece, compressed air in the rotary drum installation part is sprayed out instantly after being opened, high-speed air flows out of the air holes in the hollow blades through the vent hole, the air outlet hole and the air holes in the turbine disc, the effect that dust and other impurities possibly attached to a runner in the blades to be detected are removed without disassembly is realized, meanwhile, the detection mechanism is matched with the driving motor to drive the movable seat to accurately position on the threaded end surface on the rotary drum installation part, ultrapure water is filled in the sleeve in the process of jointing the rabbets of the sleeve, the sleeve is separated from the water level surface of the water tank under the driving of the output end of the hydraulic cylinder, and the quality nondestructive rapid detection of each blade is further realized without disassembly;
(2) By reading the water storage reading in the counterweight measuring cylinder in the vertical state, whether the inner runner structure of the blade to be detected has the quality problems of material deficiency, carbon deposit and the like or not is accurately judged, and the cost of detection equipment is greatly reduced.
Drawings
Fig. 1 is a schematic view of the present invention in a dust removing state.
Fig. 2 is a schematic diagram of the state of the present invention in a water filled state.
Fig. 3 is an enlarged view of the structure at a in fig. 2.
Fig. 4 is an enlarged view of the structure at B in fig. 2.
Fig. 5 is a schematic view showing the state of the invention in the reading state.
FIG. 6 is a schematic view of a turbine disk and hollow vane to be inspected according to the present invention.
Fig. 7 is an enlarged view of the structure at C in fig. 6.
The device comprises a 1-frame, a 2-rotary drum mounting part, a 3-dust removing mechanism, a 4-detecting mechanism, a 5-mounting frame, a 21-vent hole, a 22-limit guide piece, a 23-torsion spring, a 24-movable sealing piece, a 25-avoidance port, a 31-driving motor, a 32-rack I, a 33-piston, a 34-gear, a 401-water tank, a 402-hydraulic cylinder, a 403-movable seat, a 404-counterweight measuring cylinder, a 405-sleeve, a 406-movable baffle, a 407-water supplementing valve, a 408-pushing block, a 409-limit clamping head, a 410-vent hole, a 411-guide rod, a 412-tension spring, a 413-follower, a 414-rack II and a 415-pushing head.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 7, the surface detection device for the hollow blade of the hot-end turbine of the aeroengine comprises a frame 1, a rotary drum mounting part 2, a dust removing mechanism 3 and a detection mechanism 4, wherein the rotary drum mounting part 2 is rotatably arranged in the frame 1 through a mounting frame 5, the dust removing mechanism 3 is mounted on the rotary drum mounting part 2 and is used for removing dust attached to an inner runner of the blade before detection, and the detection mechanism 4 is mounted in the frame 1 and is used for detecting the surface state of the inner runner of the blade.
In this embodiment, the drum mounting portion 2 is of a hollow structure, the left side portion in the horizontal direction is a smooth end surface, the middle portion is a threaded end surface, the right side portion is a smooth end surface, the end surfaces of the left side portion and the middle portion of the drum mounting portion 2 are all provided with a plurality of uniformly arranged vent holes 21, one side of the inner wall of the vent holes 21 is fixed with a limit guide piece 22, the other side of the inner wall of the vent holes 21 is rotatably provided with a movable sealing piece 24 through a torsion spring 23, and the end surface of the right side portion of the drum mounting portion 2 is provided with an avoidance opening 25.
In this embodiment, the dust removing mechanism 3 includes a driving motor 31, a rack one 32 and a piston 33, the driving motor 31 is mounted on the mounting frame 5, the output end of the driving motor 31 is connected with a gear 34, the rack one 32 is slidably disposed on the drum mounting portion 2 and meshed with the gear 34, and the piston 33 is slidably disposed on the drum mounting portion 2 and fixed to one end of the rack one 32.
The driving motor 31 is a servo motor.
In this embodiment, the detection mechanism 4 includes a water tank 401, a hydraulic cylinder 402, a moving seat 403, a weight cylinder 404 and a sleeve 405, the water tank 401 is disposed on a bottom wall of the rack 1, a movable baffle 406 is rotationally disposed on a left side of the water tank 401, a water replenishing valve 407 is mounted at a right side end of the water tank 401, the hydraulic cylinder 402 is rotationally disposed at an upper end of the water tank 401, an output end of the hydraulic cylinder 402 is rotationally connected with a pushing block 408, another end of the pushing block 408 is fixed on the mounting frame 5, the moving seat 403 is mounted on the drum mounting portion 2, a limit chuck 409 is elastically mounted on the moving seat 403, an air outlet 410 matched with the air vent 21 is disposed in the moving seat 403, a follower 413 is rotationally disposed at another end of the moving seat 403, a rack two 414 meshed with the gear 34 is slidably disposed at a side end of the mounting frame 5, a pushing head 415 is elastically mounted in the moving seat 403, a plurality of guide rods 411 are circumferentially disposed on the moving seat 403, and a guide rod 411 is disposed at a side end of the guide rod 404 and is disposed between the guide rod 404 and the guide rod 404.
The water stored in the water tank 401 is ultrapure water, so that the water entering the blade inner lock to be detected is ensured to be free from other impurity interference.
In this embodiment, the first rack 32 and the second rack 414 are parallel to each other.
In this embodiment, the water level line in the water tank 401 is consistent with the tenon end surface of the blade, and the sleeve 405 matched with each blade to be inspected is guaranteed to be immersed in the same amount of high-purity water under the action of the water supplementing valve 407.
In this embodiment, the ports of the sleeve 405 are matched with the tenon end surfaces of the blades, so that the water stored in the sleeve 405 cannot flow out from the tenon end surfaces of the blades in the process of immersing the blades in water.
In addition, when the output end of the hydraulic cylinder 402 is in a folded state, the sleeve 405 is in a vertical state, so that the sleeve 405 moves in the direction of the blade to be detected, and when the output end of the hydraulic cylinder 402 is in an extended state, the counterweight measuring cylinder 404 is in a vertical state, so that the accuracy of water storage reading in the measuring cylinder 404 is ensured.
Working process and principle: in the use process, firstly, a turbine disc with blades to be detected is arranged on the left side of a drum mounting part 2, the turbine disc is positioned on the drum mounting part 2 through a limiting chuck 409 under the pushing of external power equipment, then a driving motor 31 is started to drive a gear 34 to rotate, a driving piston 33 is driven to push in the drum mounting part 2 through a rack I32 meshed with the gear 34, when a pushing head 415 in a movable seat 403 moves to the position of a vent hole 21, the pushing head 415 pushes a movable sealing piece 24 in the vent hole 21 to be separated from a limiting guide piece 22, compressed air in the drum mounting part 2 is sprayed out instantly in the opened 21, high-speed air flows out of the air holes on the hollow blades finally through the vent hole 21, an air outlet hole 410 and the air holes on the turbine disc, the air flow pushes a lower sleeve 405 and a counterweight measuring cylinder 404 to leave the blades to be detected in the direction of a guide rod 411, and impurities such as dust possibly attached to a runner in the blades to be detected are removed;
along with the movement of the rack II 414 and the follower 413 driven by the gear 34, after the movable seat 403 translates to the middle thread end face on the drum mounting part 2, the lower blade to be detected and the matched sleeve 405 enter the water tank 401 through the movable baffle 406, at the moment, water is filled into the water tank 401 through the water supplementing valve 407, meanwhile, the output rotating speed of the driving motor 31 is reduced, the driving motor 31 is closed when the blade to be detected is positioned at the right lower end of the turbine, under the action of the tension force of the tension spring 412 on the guide rod 411, the sleeve 405 below slowly moves upwards, water stored in the water tank 401 enters the sleeve 405 through the port of the sleeve 405, the water level line is kept consistent with the tenon end face of the blade, the sleeve 405 is attached to the end face of the blade tenon under the tension force of the tension spring 412 after being fully immersed, meanwhile, the hydraulic cylinder 402 is started to extend the output end of the sleeve 405 until the ultrapure water stored in the inner flow channel of the sleeve 405 and the blade flows into the counterweight cylinder 404 in the complete extending state, and finally, the quality problem of the inner flow channel structure of the blade to be detected is judged through reading the inner volume of the counterweight cylinder 404 in the vertical state;
when the measured reading is matched with the standard reading value, judging the detected blade as no quality problem;
when the measured reading is larger than the standard value, judging the detected blade as lacking of the material, and removing and maintaining the blade with the problem in a targeted manner;
and when the measured reading is smaller than the standard value, judging that the carbon deposit exists on the detected blade, and removing and maintaining the blade with the problem in a targeted manner.
Based on the above, the drum mounting part 2 with a hollow structure and smooth left side part and threaded middle part in the horizontal direction is provided, the driving motor 31 drives the piston 33 to push in the drum mounting part 2, when the pushing head 415 in the moving seat 403 moves to the position of the vent hole 21, the pushing head 415 pushes the movable sealing piece 24 in the vent hole 21 to be separated from the limit guide piece 22, compressed air in the drum mounting part 2 is sprayed out instantly in the opened 21, high-speed air flows out of the air holes on the hollow blades through the vent hole 21, the air outlet hole 410 and the air holes on the turbine disc, so that the quality of each blade can be further and quickly detected without disassembly;
by reading the water storage reading in the counterweight measuring cylinder 404 in the vertical state, whether the material loss exists in the inner runner structure of the blade to be detected, the quality problems such as carbon deposit exist or not can be accurately judged, and the cost of detection equipment is greatly reduced.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (5)
1. The utility model provides an aeroengine hot junction turbine hollow blade profile detection device, its characterized in that includes frame (1), rotary drum installation department (2), dust removal mechanism (3) and detection mechanism (4), rotary drum installation department (2) rotate through mounting bracket (5) and set up in frame (1), dust removal mechanism (3) are installed on rotary drum installation department (2) to be used for carrying out the clearance before detecting the dust that adheres to on the inner runner of blade, detection mechanism (4) are installed in frame (1) and are used for carrying out the profile state detection of inner runner to the blade, rotary drum installation department (2) are hollow structure, and the left side part on its horizontal direction is smooth terminal surface, and its right side part is smooth terminal surface, and the terminal surface of the left side part and the intermediate part of rotary drum installation department (2) all sets up a plurality of evenly set up air vent (21), one side is fixed with spacing guide piece (22) on the inner wall of air vent (21) on the opposite side through torsional spring (23) and rotates and install movable closure piece (24), rotary drum installation department (2) is hollow structure, and the right side part (31) is equipped with on the side of the inner wall of air vent (21) is equipped with motor (31), and drive mechanism (31) is equipped with in order to dodge in order to drive motor (31) on the right side (31), the output end of the driving motor (31) is connected with a gear (34), the first rack (32) is slidably arranged on the rotary drum mounting part (2) and meshed with the gear (34), the piston (33) is slidably arranged on the rotary drum mounting part (2) and fixed with one end of the first rack (32), the detection mechanism (4) comprises a water tank (401), a hydraulic cylinder (402), a movable seat (403), a counterweight measuring cylinder (404) and a sleeve (405), the water tank (401) is arranged on the bottom wall of the frame (1), a movable baffle (406) is rotatably arranged on the left side of the water tank (401), a water supplementing valve (407) is arranged on the right side end of the water tank (401), the hydraulic cylinder (402) is rotatably arranged on the upper end of the water tank (401), the output end of the hydraulic cylinder (402) is rotatably connected with a pushing block (408), the other end of the pushing block (408) is fixed on the mounting frame (5), the movable seat (403) is arranged on the rotary drum mounting part (2), a limit seat (403) is elastically provided with a limit seat (409), the other end (403) is provided with a vent hole (21) which is matched with the movable seat (413), the side of follower (413) is fixed with rack two (414) with gear (34) engaged with, rack two (414) slip sets up on the side of mounting bracket (5), and the inside of removing seat (403) still elastic mounting has top push head (415), is fixed with guide bar (411) that a plurality of hoop set up on removing seat (403), the side of counter weight graduated flask (404) slides and sets up on guide bar (411), the port side of sleeve (405) is linked together with the port of counter weight graduated flask (404), be provided with extension spring (412) on guide bar (411) between removing seat (403) and counter weight graduated flask (404).
2. The aeroengine hot-end turbine hollow blade profile detection device according to claim 1, wherein: the first rack (32) and the second rack (414) are kept parallel.
3. The aeroengine hot-end turbine hollow blade profile detection device according to claim 1, wherein: the water level line in the water tank (401) is consistent with the tenon end face of the blade.
4. The aeroengine hot-end turbine hollow blade profile detection device according to claim 1, wherein: the ports of the sleeve (405) are matched with the tenon end surfaces of the blades.
5. The aeroengine hot-end turbine hollow blade profile detection device according to claim 1, wherein: when the output end of the hydraulic cylinder (402) is in a folded state, the sleeve (405) is in a vertical state, and when the output end of the hydraulic cylinder (402) is in an extended state, the counterweight measuring cylinder (404) is in a vertical state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110479041.3A CN113176085B (en) | 2021-04-30 | 2021-04-30 | Aeroengine hot end turbine hollow blade profile detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110479041.3A CN113176085B (en) | 2021-04-30 | 2021-04-30 | Aeroengine hot end turbine hollow blade profile detection device |
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| Publication Number | Publication Date |
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| CN113176085A CN113176085A (en) | 2021-07-27 |
| CN113176085B true CN113176085B (en) | 2024-01-02 |
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| CN202110479041.3A Active CN113176085B (en) | 2021-04-30 | 2021-04-30 | Aeroengine hot end turbine hollow blade profile detection device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113188784B (en) * | 2021-04-30 | 2024-04-30 | 江苏江航智飞机发动机部件研究院有限公司 | Detection equipment for hot-end turbine hollow blade |
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