CN214042691U - A tertiary blade device of detecting a flaw of engine for simulation teaching - Google Patents
A tertiary blade device of detecting a flaw of engine for simulation teaching Download PDFInfo
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- CN214042691U CN214042691U CN202121719929.1U CN202121719929U CN214042691U CN 214042691 U CN214042691 U CN 214042691U CN 202121719929 U CN202121719929 U CN 202121719929U CN 214042691 U CN214042691 U CN 214042691U
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Abstract
The utility model discloses a three-stage blade flaw detection device of an engine for simulation teaching, which comprises a box body (9), a first-stage stator blade (1), a second-stage rotor blade (2), a second-stage stator blade (3), a third-stage rotor blade (4), a third-stage stator blade (5), a blade mounting seat (8) and a blade position adjusting transmission device, wherein the first-stage stator blade (1), the second-stage rotor blade (2), the second-stage stator blade (3), the third-stage rotor blade (4), the third-stage stator blade (5), the blade mounting seat (8) and the blade position adjusting transmission device are arranged in the box body (9); an observation window (6) and a hole detection plug (7) which are arranged outside the box body (9); the blade position adjusting transmission device comprises a nut (10), a bearing (11), a screw rod (12) and a handle (13). The utility model discloses simulation engine machine casket, observation window characteristic can ensure unanimous with real quick-witted operation, has simulated rotor and stator blade, and operational environment is unanimous. The utility model discloses still rotate with the endwise slip simulation engine, realize camera lens and boss complex core exercise function to tertiary rotor blade has preset artificial defect, and the tired initial position of boss has been restoreed to the at utmost.
Description
Technical Field
The utility model relates to an aircraft engine simulation teaching field especially relates to a tertiary blade device of detecting a flaw of engine for simulation teaching.
Background
With the continuous improvement of the technical level in the aviation field of China, the updating period of airplanes is continuously shortened, the quality and the performance of a blade of an airplane engine, which is one of the most important parts, are directly related to the normal work of the whole airplane, the integrity and the state of the aviation turbine blade are accurately detected, the damage is timely discovered and defended, and the method is of great importance for improving the working safety of the engine. When the airplane blade works, the airplane blade is influenced by multiple actions such as alternating load, hot corrosion, high-temperature oxidation, mechanical abrasion and the like, and fatigue crack damage is most easily caused. The existing detection technology and method for the blades of the aircraft engine are not mature, an effective in-situ detection device is not available, the blades need to be detached from the impeller and held by hands or clamped by a clamp after being subjected to nondestructive detection in the prior art, and the blades are placed under a detection probe for monitoring, so that the working efficiency is reduced by the detection mode, and the detection precision is difficult to guarantee.
Due to the complex structure of the blades of the aircraft engine, professional technicians need to be trained to perform skilled and accurate diagnosis on the damage if the blades are detected in situ.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's is not enough, provides a tertiary blade of engine device of detecting a flaw for simulation teaching, the utility model discloses simulate engine low pressure rotor passageway, contain each item element that influences the operation of detecting a flaw, solve the blade boss and detect a flaw the operation degree of difficulty and big and the not enough problem of the limited exercise station of real machine quantity, can help the student to develop the boss and detect a flaw the exercise anytime and anywhere, reduce the training cost.
The purpose of the utility model is realized through the following technical scheme:
a three-stage blade flaw detection device of an engine for simulation teaching comprises a box body, and a first-stage stator blade, a second-stage rotor blade, a second-stage stator blade, a third-stage rotor blade, a third-stage stator blade, a blade mounting seat and a blade position adjusting transmission device which are arranged in the box body;
the number of the blade mounting seats is not less than two, the blade mounting seats are respectively fixed on the base of the box body, and the second-stage rotor blade and the third-stage rotor blade are respectively mounted on the blade mounting seats;
the first-stage stator blade, the second-stage rotor blade, the second-stage stator blade, the third-stage rotor blade and the third-stage stator blade are sequentially arranged in the box body in a stepped distribution mode in the vertical direction;
the blade position adjusting transmission device penetrates through the blade mounting seat and extends out of the box body.
The box body is of a totally enclosed cuboid structure.
One end of the first-stage stator blade, one end of the second-stage stator blade and one end of the third-stage stator blade are respectively fixed on the base in the box body, and the other ends of the first-stage stator blade, the second-stage stator blade and the third-stage stator blade are respectively fixed on the top end in the box body.
A three-stage blade flaw detection device of an engine for simulation teaching also comprises an observation window and a hole detection plug which are arranged outside a box body; the observation window is arranged on a hole detection port of the box body, which is connected with the first-stage stator blade, the second-stage stator blade and the third-stage stator blade; the hole detection plug is arranged at the center of the observation window.
The blade position adjusting transmission device comprises a nut, a bearing, a screw rod and a handle; the screw rod penetrates through the blade mounting seat and is fixed on the blade mounting seat through a nut; one end of the screw rod extends to the inner wall of the box body and is fixed on a bearing on the inner wall of the box body, and the other end of the screw rod extends out of the box body and is connected with the handle.
The number of the observation windows, the hole detection plugs and the hole detection ports is not less than three, and the overall dimensions of the observation windows, the hole detection plugs and the hole detection ports are processed according to the dimension 1:1 of a real machine.
The utility model has the advantages that:
firstly, the utility model simulates the characteristics of the engine case and the observation window, and can ensure the operation consistency with the real engine; secondly, the rotor and the stator blades are simulated, and the operating environment is consistent; thirdly, the axial sliding simulates the rotation of an engine, and the core exercise function of matching the lens and the boss is realized; fourthly, the three-stage rotor blade is preset with artificial defects, the fatigue starting position of the boss is reduced to the maximum extent, and the pertinence is strong.
Drawings
FIG. 1 is an external view of the device of the present invention;
fig. 2 is a front cross-sectional view of the present invention;
FIG. 3 is a schematic view of the blade position adjustment actuator of the present invention;
in the drawings: 1-first-stage stator blade, 2-second-stage rotor blade, 3-second-stage stator blade, 4-third-stage rotor blade, 5-third-stage stator blade, 6-observation window, 7-hole detection plug, 8-blade mounting seat, 9-box body, 10-nut, 11-bearing, 12-screw rod and 13-handle.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a three-stage blade flaw detection device for an engine for simulation teaching comprises a box 9, and a first-stage stator blade 1, a second-stage rotor blade 2, a second-stage stator blade 3, a third-stage rotor blade 4, a third-stage stator blade 5, a blade mounting seat 8 and a blade position adjusting transmission device which are arranged in the box 9;
the number of the blade mounting seats 8 is not less than two, the blade mounting seats are respectively fixed on the base of the box body 9, and the secondary rotor blade 2 and the tertiary rotor blade 4 are respectively mounted on the blade mounting seats 8;
the first-stage stator blade 1, the second-stage rotor blade 2, the second-stage stator blade 3, the third-stage rotor blade 4 and the third-stage stator blade 5 are sequentially arranged in the box body 9 in a stepped distribution mode in the vertical direction;
the blade position adjusting transmission device penetrates through the blade mounting seat 8 and extends out of the box body 9.
The box body 9 is a totally enclosed cuboid structure.
One end of the first-stage stator blade 1, one end of the second-stage stator blade 3 and one end of the third-stage stator blade 5 are respectively fixed on a base in the box body 9, and the other ends of the first-stage stator blade 1, the second-stage stator blade 3 and the third-stage stator blade 5 are respectively fixed on the top end in the box body 9.
A three-level blade flaw detection device of an engine for simulation teaching also comprises an observation window 6 and a hole detection plug 7 which are arranged outside a box body 9; the observation window 6 is arranged on a hole detection port of the box body 9 connected with the first-stage stator blade 1, the second-stage stator blade 3 and the third-stage stator blade 5; the hole detection plug 7 is arranged at the center of the observation window 6.
The blade position adjusting transmission device comprises a nut 10, a bearing 11, a screw rod 12 and a handle 13; the screw rod 12 penetrates through the blade mounting seat 8 and is fixed on the blade mounting seat through a nut; one end of the screw rod 12 extends to the inner wall of the box body 9 and is fixed on a bearing 11 on the inner wall of the box body 9, and the other end of the screw rod 12 extends to the outside of the box body 9 and is connected with a handle 13.
The number of the observation window 6, the hole detection plug 7 and the hole detection port is not less than three, and the overall dimensions of the observation window 6, the hole detection plug 7 and the hole detection port are processed according to the dimension 1:1 of a real machine.
The blade in-situ detection based on the engine three-stage blade flaw detection device specifically operates as follows:
1. an operator on the wing opens the third-stage blade hole detection plug 7; opening an observation window 6 or a skin cover according to different models;
2. pulling the probe rod button to pull the probe rod head to be in a straight line position with the probe rod;
3. the probe rod is extended into an observation window 6 of the third-stage blade of the engine. When the probe rod is inserted, the force is lightly applied, and meanwhile, the probe rod is manually rotated to avoid a clamping position;
4. the button is loosened, the probe is adjusted to be in the optimal observation working state within the range of 80-110 degrees through the adjusting screw, the angle of the endoscope probe is adjusted at the same time, the probe and the blade on the screen of the endoscope are observed to be positioned at the visible position in the center of the screen, and the blade and the probe can be seen at the same time;
5. operators on the wings pull the buttons to enable the probes to be in a linear position, and instruct personnel in the air inlet channel to turn the handles 13 of the three-stage blade flaw detection devices, so that the three-stage blades rotate one blade each time to reach a proper position where the probes are conveniently meshed with the blades, and the probes are adjusted to be correctly meshed with the blades by pulling and loosening the buttons; in the operation process, an operator on the wing can operate and command personnel in the air inlet channel to rotate the rotor in a forward and reverse disc mode to adjust the reasonable position of the blade;
6. operators on the wings adjust the clamping grooves on the probes to clamp bosses of adjacent blades, rotate the probe rods to slide into the air inlet edges of the detected blades, observe the display screen of the equipment host, slightly adjust the clamping positions until the probes are tightly attached to the bosses of the blades, change red wave lines on the display screen into green, keep the probe rods still, loosen the handle of the probe rods when the wave lines on the display screen are full of the whole display screen, and keep the signal lines unchanged at the moment, wherein the probes and the blades are well attached;
7. when the wavy line is below the yellow threshold line, the blade is a perfect blade without defects;
8. when the wavy line is above the yellow threshold line, the leaf is a defective or suspected defective leaf;
9. repeating item 6 for 3 times, and determining that the results of 3 times are consistent to ensure the reliability of the inspection;
10. the inspection of 57 blades in total of three-stage blades is completed in sequence, and the counting is carried out while the inspection is carried out, so that the missing inspection is avoided;
11. returning to the reexamination for the suspicious blade defects in the inspection, and repeating the step 6 for further confirmation;
12. after all the inspection operations are completed, operators on the wings press the probe rod buttons to enable the probes to be in a linear state, and the probe rods are slowly pulled out.
The blade detecting instrument related to the method comprises a vortex detecting device, an endoscope device and a detecting host; the endoscope device comprises a host and a lens; the eddy current detection device is connected with the detection host, and the endoscope lens arranged on the eddy current detection device is connected with the host through a cable.
The eddy current flaw detection device comprises a special probe, an eddy current sensor, a probe rod and a high-frequency coaxial cable; the eddy current sensor is arranged on the special probe, the special probe is arranged at one end of the probe rod, and the eddy current sensor is connected with the detection host machine through a high-frequency coaxial cable.
The eddy current sensor adopts manganese-zinc ferrite with small crystal grains, the size of the magnetic core is determined to be phi 6mm x 6mm according to the actual space of in-situ detection, and the detection surface of the magnetic core needs to be processed to have a certain radian in consideration of the influence of the R angle of the root part of the lug boss of the blade and the lifting-off effect of the probe, so that the magnetic core is perfectly matched with the root part of the blade. The eddy current sensor is mainly characterized in that a profiling design is carried out, a magnetic core is not in a common cylindrical shape, an arc-shaped curved surface is designed at one end of a cylindrical probe, the probe is subjected to curved surface processing, so that the detection surface of the probe is perfectly matched with the detection position of the root part of the blade, and then an enameled wire with the wire diameter of phi 0.15mm is uniformly wound at one end of the profiling surface of the magnetic core to obtain the required probe. Due to the space limitation of the field detection observation hole and the distribution condition of the blades in the engine, the magnetic core is attached to the blade detection surface as far as possible.
The detection host comprises a host shell, a power module, an excitation and conditioning circuit, an industrial control mainboard, a curve display element and a sound prompt element, wherein the power module, the excitation and conditioning circuit, the industrial control mainboard, the curve display element and the sound prompt element are arranged in the host; the industrial control mainboard comprises an AD acquisition module; one end of the excitation and conditioning circuit is connected with the eddy current sensor, the other end of the excitation and conditioning circuit is connected with the AD acquisition module, the industrial control mainboard is respectively connected with the curve display element and the sound prompt module element, and the external power supply is used for respectively supplying power to the eddy current sensor, the excitation and conditioning circuit and the industrial control mainboard through the power supply module. The probe is connected with the excitation and conditioning circuit module in the instrument box through a high-frequency coaxial cable, the industrial control main board controls the AD acquisition module to sample the conditioning circuit, and the ARM carries out defect identification and judges defects through a signal line.
The type of the endoscope equipment is Weilin GO +, and a lens of the endoscope is arranged on a probe rod of the eddy current detection device, so that the position of a blade boss inside an engine is mainly found. The lens extends into the engine through the observation hole along with the probe rod, and the distribution condition of the blades can be seen by turning on the light. The detection position of the boss is found, and the person rotating the blade is matched with the person holding the probe rod to mutually match, so that the probe is clamped at the accurate position.
The probe is a movable probe, the turning range of the probe is 80-180 degrees, and the working angle is 80-90 degrees.
The rear end of the probe rod is provided with a control button for controlling the probe to bounce and turn.
Host computer shell protecgulum is provided with liquid crystal display, and the handle is fixed in host computer shell both sides, and the host computer shell back is equipped with charge mouth and a plurality of USB serial ports. The liquid crystal display that shows all kinds of information is located the protecgulum of shell, and the handle can be along with the protecgulum rotation backward. The operation keyboard is connected with the system through a USB interface on the back of the shell. Other USB devices, such as a mouse, can also be connected. The liquid crystal display screen is a TFT color display screen with 800 × 480 pixels and is completely controlled in a capacitive touch mode. If the instrument is not used temporarily, the screen can be set with a protection interface by suspending, and the energy-saving mode is switched.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, but only by the description of the above embodiments and the description, without departing from the spirit and scope of the present invention, the present invention can also have various changes and modifications, and these changes and modifications all fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A three-stage blade flaw detection device of an engine for simulation teaching is characterized by comprising a box body (9), a first-stage stator blade (1), a second-stage rotor blade (2), a second-stage stator blade (3), a third-stage rotor blade (4), a third-stage stator blade (5), a blade mounting seat (8) and a blade position adjusting transmission device, wherein the first-stage stator blade (1), the second-stage rotor blade (2), the second-stage stator blade (3), the third-stage rotor blade (4), the third-stage stator blade (5), the blade mounting seat (8) and the blade position adjusting transmission device are arranged in the box body (9);
the number of the blade mounting seats (8) is not less than two, the blade mounting seats are respectively fixed on a base of the box body (9), and the secondary rotor blade (2) and the tertiary rotor blade (4) are respectively mounted on the blade mounting seats (8);
the first-stage stator blade (1), the second-stage rotor blade (2), the second-stage stator blade (3), the third-stage rotor blade (4) and the third-stage stator blade (5) are sequentially arranged in the box body (9) in a stepped distribution mode in the vertical direction;
the blade position adjusting transmission device penetrates through the blade mounting seat (8) and extends out of the box body (9).
2. The three-stage blade flaw detection device for the engine for simulation teaching of claim 1, wherein the box body (9) is a totally enclosed rectangular parallelepiped structure.
3. The three-stage blade flaw detection device for the engine for simulation teaching of claim 1, wherein one end of the first-stage stator blade (1), one end of the second-stage stator blade (3) and one end of the third-stage stator blade (5) are respectively fixed on a base in the box body (9), and the other ends of the first-stage stator blade (1), the second-stage stator blade (3) and the third-stage stator blade are respectively fixed on the top end in the box body (9).
4. The three-stage blade flaw detection device for the engine for the simulation teaching as claimed in claim 1, further comprising an observation window (6) and a hole detection plug (7) arranged outside the box body (9); the observation window (6) is arranged on a hole detection port of the box body (9) connected with the first-stage stator blade (1), the second-stage stator blade (3) and the third-stage stator blade (5); the hole detection plug (7) is arranged at the center of the observation window (6).
5. The three-stage blade flaw detection device of engine for simulation teaching according to claim 1, wherein the blade position adjustment transmission comprises a nut (10), a bearing (11), a lead screw (12) and a handle (13); the screw rod (12) penetrates through the blade mounting seat (8) and is fixed on the blade mounting seat through a nut; one end of the screw rod (12) extends to the inner wall of the box body (9) and is fixed on a bearing (11) on the inner wall of the box body (9), and the other end of the screw rod (12) extends to the outside of the box body (9) and is connected with a handle (13).
6. The three-stage blade flaw detection device for the engine for simulation teaching of claim 4, wherein the number of the observation window (6), the hole detection plug (7) and the hole detection port is not less than three, and the external dimensions of the three are processed according to the 1:1 real machine dimension.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121719929.1U CN214042691U (en) | 2021-07-27 | 2021-07-27 | A tertiary blade device of detecting a flaw of engine for simulation teaching |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121719929.1U CN214042691U (en) | 2021-07-27 | 2021-07-27 | A tertiary blade device of detecting a flaw of engine for simulation teaching |
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| CN214042691U true CN214042691U (en) | 2021-08-24 |
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| CN202121719929.1U Active CN214042691U (en) | 2021-07-27 | 2021-07-27 | A tertiary blade device of detecting a flaw of engine for simulation teaching |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114973902A (en) * | 2022-04-14 | 2022-08-30 | 西北工业大学 | Aeroengine low-pressure turbine model for teaching and assembling method |
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2021
- 2021-07-27 CN CN202121719929.1U patent/CN214042691U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114973902A (en) * | 2022-04-14 | 2022-08-30 | 西北工业大学 | Aeroengine low-pressure turbine model for teaching and assembling method |
| CN114973902B (en) * | 2022-04-14 | 2023-06-23 | 西北工业大学 | Aeroengine low-pressure turbine model for teaching and assembly method |
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