CN116839497A - Online detection device for turbine blade - Google Patents
Online detection device for turbine blade Download PDFInfo
- Publication number
- CN116839497A CN116839497A CN202310772899.8A CN202310772899A CN116839497A CN 116839497 A CN116839497 A CN 116839497A CN 202310772899 A CN202310772899 A CN 202310772899A CN 116839497 A CN116839497 A CN 116839497A
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- swinging
- screw
- sliding seat
- shaft
- turbine
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 238000009434 installation Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 9
- 230000009471 action Effects 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
Abstract
The invention relates to an online detection device for a turbine blade, which comprises a mounting seat, a sliding seat, a swinging mechanism and a ray range finder, wherein the sliding seat is slidably arranged on the mounting seat, the swinging mechanism is arranged on the outer side of the sliding seat, and the ray range finder is arranged on the swinging mechanism and is used for emitting rays to the turbine blade and measuring the distance between the ray range finder and the turbine blade; the ray distance meter moves along with the swinging mechanism in a horizontal plane; a sensor component is arranged on the side wall of the sliding seat above the swinging mechanism; the invention can realize detection without detaching the main shaft and the blades of the steam turbine, can greatly save the detaching time, and simultaneously does not need to hoist the main shaft of the steam turbine, thereby avoiding the damage of the main shaft in the hoisting process; the detection efficiency of the turbine blade is effectively improved. Meanwhile, the method has the advantages of accurate detection result, convenience in operation, wide application range and the like.
Description
Technical Field
The invention relates to an online detection device for a turbine blade, and belongs to the technical field of turbine maintenance.
Background
In the fault maintenance of a steam turbine, blade damage is the leading cause of an accident, and the accident caused by the damage is most common in the steam turbine accident; common causes of turbine blade failure include cracking, corrosion, etc., but in a few cases, the turbine blades are deformed and twisted due to the turbine being subjected to large thermal strains. As turbine blades are gradually updated from traditional straight blades to twisted three-dimensional blades, the twisting defect of seven turbine blades is more common; the first step in repairing the twist of a turbine blade is to detect the twist pattern and twist amplitude of the blade.
In the existing detection of the turbine blades, the turbine blade sets are required to be detached integrally, then a single blade is detached and then placed on professional measuring equipment to be detected, more manpower and material resources are consumed in the detaching process due to the factors of the volume, the weight and the like of the turbine, meanwhile, the turbine blade sets are required to be detached together with the rotating shaft, and after the detection is completed, the turbine blades are required to be reassembled; if the deformation of part of the blades is small and can not be judged by naked eyes, each blade of the steam turbine needs to be detached and detected one by one; the detection process of the steam turbine has the problem of low efficiency.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the online detection device for the turbine blade, which is convenient to install and operate and high in detection efficiency, and the turbine blade is prevented from being detached.
The invention adopts the following technical scheme:
the invention comprises a mounting seat, a sliding seat which is slidably arranged on the mounting seat, a swinging mechanism which is arranged on the outer side of the sliding seat, and a ray range finder which is arranged on the swinging mechanism and is used for emitting rays to the turbine blade and measuring the distance between the rays and the turbine blade; the ray distance meter moves along with the swinging mechanism in a horizontal plane; and a sensor component is arranged on the side wall of the sliding seat above the swinging mechanism.
The swing mechanism comprises a fan-shaped frame plate fixedly arranged on the outer side of a sliding seat, an arc-shaped rack arranged on the circumferential wall of the fan-shaped frame plate, a swing shaft rotatably arranged at the circle center of the fan-shaped frame plate, a swing rod positioned below the fan-shaped frame plate and horizontally arranged on the swing shaft, a stepping motor vertically arranged at the end part of the swing rod and a driving gear arranged on a transmission shaft of the stepping motor, wherein the driving gear is meshed with the arc-shaped rack; the ray range finder is arranged at the top of a swinging shaft, and the swinging shaft is perpendicular to a main shaft of the steam turbine; the stepping motor drives the driving gear to rotate, the driving gear moves along the arc-shaped rack and drives the swinging rod to swing, and the swinging rod drives the swinging shaft and the ray range finder to rotate.
The invention is characterized in that a lifting mechanism is arranged on a swinging mechanism, and the swinging shaft is a hollow shaft with upper and lower openings; the lifting mechanism comprises a screw rod, a screw rod motor, a lifting table and a guide column; the lower gap of the screw rod is penetrated in the swing shaft, the screw rod motor is fixedly arranged at the top end of the swing shaft, and the screw rod penetrates through the screw rod motor and the swing shaft and is connected with the screw rod motor in a matched manner; four guide posts are fixed with the fan-shaped frame plate and symmetrically arranged on two sides of the screw motor, two guide posts are arranged on each side of the screw motor, guide holes on the lifting table are sleeved on the guide posts in a clearance way, and the top end of the screw is propped against the bottom surface of the lifting table; the ray distance meter is fixedly arranged on the top surface of the lifting table; the screw rod motor drives the screw rod to move up and down, the screw rod upwards pushes against the lifting platform to rise, the screw rod moves down to enable the lifting platform to fall, and the lifting platform drives the ray range finder to move up and down to scan the turbine blades in different horizontal planes.
The inner side of the arc wall of the fan-shaped frame plate is provided with the arc through groove, the arc through groove is parallel to the arc rack, the hanging sliding block is arranged in the arc through groove in a sliding mode, and the bottom of the hanging sliding block is fixed with the top surface of the swing rod.
According to the invention, the screw-nut pair is arranged between the mounting seat and the sliding seat, the screw rod of the screw-nut pair is arranged on the mounting seat, and the nut of the screw-nut pair is arranged on the sliding seat.
The sensor assembly comprises a first proximity sensor and a second proximity sensor which are perpendicular to each other; the first proximity sensor is arranged on the sliding seat through a corner plate, is parallel to the sliding seat and corresponds to the side surface of the turbine blade, and the second proximity sensor is arranged on the sliding seat and is perpendicular to the main shaft of the turbine; the second proximity sensor and the main shaft of the steam turbine are in the same plane; the second proximity sensor is disposed on one side of the gusset.
According to the invention, the adapter plate is fixedly arranged on the outer side of the sliding seat, and the swing mechanism and the sensor assembly are both arranged on the adapter plate.
The ray distance meter is a laser distance meter or an infrared distance meter.
The invention has the following positive effects: when the invention is adopted to detect the distortion degree of a certain blade of the steam turbine, the mounting seat is arranged on the lower half of the steam turbine cylinder body, the steam turbine blade is rotated to be close to the ray distance measuring instrument, the swinging mechanism swings the ray distance measuring instrument, the distance value of each part of the steam turbine blade is further measured, and then the value is compared with the value of a normal blade, so that the distortion degree of the steam turbine blade can be determined, or the distortion position of the steam turbine blade is obtained.
The sliding seat can slide on the mounting seat, so that the swinging mechanism and the ray range finder are driven to slide, the distance between the range finder and the blade can be adjusted in the sliding process, a proper position can be conveniently found to detect the blade, and the difficulty in comparison with a normal blade is reduced.
The first sensor and the second sensor which are mutually perpendicular are arranged on the mounting seat, when different blades are measured, the measured blades can be ensured to be always positioned at the same position, and when measured data are compared with normal blades, a large amount of workload can be reduced, and the whole detection time of all the blades is saved; two sensors that mutually perpendicular set up can fix a position the blade respectively in two dimensions, and location accuracy is higher.
The swinging mechanism can drive the ray distance meter to swing or rotate along with the swinging rod on one hand, so that smooth realization of the action of the distance meter is ensured; on the other hand, one end of the swing rod is connected with a swing shaft at the circle center of the fan-shaped frame plate, and the other end of the swing rod is provided with a driving gear, so that the swing amplitude of the swing rod can be accurately controlled by controlling the rotation angle of the driving gear, and a realizable foundation is provided for accurately controlling the motion of the range finder.
The hanging slider ensures that the swing rod cannot displace or twist in the vertical direction, so that the action of the swing rod is more accurate, and the detection accuracy is improved.
The elevating system makes the ray rangefinder not only can realize rotating in single plane to can make the ray rangefinder rotate in a plurality of planes through control elevating system, make the ray rangefinder can measure the distance of blade everywhere, can all-round detection blade everywhere shape, and then obtain the 3D data of blade, provide more accurate and convenient reference for the distortion point and the distortion position that conveniently seek the blade. The lifting mechanism realizes the lifting of the ray range finder on one hand; on the other hand, when the screw rod penetrating through the middle of the swinging shaft is lifted, the acting point of the lifting platform can be ensured to be positioned on the swinging shaft, so that the forces received in the upper direction and the lower direction of the lifting platform are ensured to be more balanced, the lifting platform is prevented from self-locking in the lifting process, and the action of the lifting platform is smoother and more stable.
The invention can realize detection without detaching the main shaft and the blades of the steam turbine, can greatly save the detaching time, and simultaneously does not need to hoist the main shaft of the steam turbine, thereby avoiding the damage of the main shaft in the hoisting process; the detection efficiency of the turbine blade is effectively improved. Meanwhile, the method has the advantages of accurate detection result, convenience in operation, wide application range and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the swing mechanism and the lifting mechanism of the present invention;
FIG. 3 is a schematic diagram of the installation position of the swing axle of the present invention;
fig. 4 is a schematic structural view of the working state of the invention.
In the drawings:
the device comprises a turbine blade, a 2-mounting seat, a 3-sliding seat, a 4-fan-shaped frame plate, a 5-first proximity sensor, a 6-second proximity sensor, a 7-arc-shaped rack, an 8-swing rod, a 9-driving gear, a 10-stepping motor, a 11-hanging slider, a 12-arc-shaped through groove, a 13-swing shaft, a 14-screw rod, a 15-screw rod motor, a 16-lifting table, a 17-ray range finder, a 18-guide column, a 19-screw rod nut pair, a 20-lifting mechanism, a 21-angle plate and a 22-adapter plate.
Detailed Description
Embodiment one:
as shown in fig. 1 and 4, the invention comprises a mounting seat 2, a sliding seat 3 which is slidably arranged on the mounting seat 2, a swinging mechanism which is arranged on the outer side of the sliding seat 3, and a ray range finder 17 which is arranged on the swinging mechanism and is used for emitting rays to the turbine blade 1 and measuring the distance between the ray range finder and the turbine blade 1, wherein the ray range finder 17 moves along with the swinging mechanism in a horizontal plane to detect the turbine blade 1, and the ray range finder 17 in the embodiment is a laser range finder or an infrared range finder. If the degree of distortion of a certain blade is required to be detected, the mounting seat 2 is only required to be mounted on the lower half of the turbine cylinder body, the turbine blade 1 is rotated to be close to the ray distance meter 17, the swinging mechanism is operated, the ray distance meter 17 swings, the distance value of each part of the turbine blade 1 is measured, and then the value is compared with the value of a normal blade, so that the degree of distortion of the turbine blade 1 can be determined, or the distortion position of the turbine blade 1 is obtained.
As shown in fig. 1, in the present invention, a screw-nut pair 19 is installed between an installation base 2 and a slide base 3, a screw of the screw-nut pair 19 is installed on the installation base 2, a nut of the screw-nut pair 19 is installed on the slide base 3, and the screw-nut pair 19 slides the slide base 3 on the installation base 2.
As shown in fig. 2 and 3, the swinging mechanism of the invention comprises a fan-shaped frame plate 4 fixedly arranged on the outer side of a sliding seat 3, an arc-shaped rack 7 arranged on the circumferential wall of the fan-shaped frame plate 4, a swinging shaft 13 rotatably arranged at the center of the fan-shaped frame plate 4, a swinging rod 8 horizontally arranged on the swinging shaft 13 and positioned below the fan-shaped frame plate 4, a stepping motor 10 arranged at the end part of the swinging rod 8 and a driving gear 9 fixedly arranged on the transmission shaft of the stepping motor 10, wherein the driving gear 9 is meshed with the arc-shaped rack 7; the ray range finder 17 is arranged at the top of the swinging shaft 13, and the swinging shaft 13 is perpendicular to the main shaft of the steam turbine; the step motor 10 drives the driving gear 9 to rotate, the driving gear 9 moves along the arc-shaped rack 7 to drive the swinging rod 8 to swing, and the swinging rod 8 drives the swinging shaft 13 and the ray range finder 17 to rotate. The swinging mechanism can drive the ray distance meter 17 to swing along with the swinging rod 8 on one hand, so that detection is realized; on the other hand, the swing amplitude of the swing rod 8 is controlled by controlling the stepping of the stepping motor 10 and the rotation angle of the driving gear 9, so that the movement of the ray range finder 17 is accurately controlled.
As shown in fig. 2, the invention is provided with a lifting mechanism 20 on the swinging mechanism; the swing shaft 13 is a hollow shaft with upper and lower openings, and the lifting mechanism 20 comprises a screw rod 14, a screw rod motor 15, a lifting table 16 and a guide post 18; the lower gap of the screw rod 14 is arranged in the swinging shaft 13 in a penetrating way and is coaxially arranged with the swinging shaft 13; the screw rod motor 15 is fixedly arranged at the top end of the swinging shaft 13, and the screw rod 14 penetrates through the screw rod motor 15 and the swinging shaft 13 and is in threaded fit connection with the screw rod motor 15; the lifting table 16 is a rectangular flat plate;
four guide posts 18 are fixed with the fan-shaped frame plate 4 and symmetrically arranged on two sides of the screw motor 15, two guide posts 18 are arranged on each side of the screw motor 15, guide holes on the lifting table 16 are sleeved on the guide posts 18 in a clearance manner, and the top end of the screw 14 is propped against the bottom surface of the lifting table 16; the ray range finder 17 is fixedly arranged on the top surface of the lifting table 16; the screw motor 15 drives the screw 14 to lift up the lifting platform 16, the screw 14 moves downwards, the lifting platform 16 falls under the self gravity, and the lifting platform 16 drives the ray range finder 17 to move up and down so as to scan all positions of the turbine blade 1 in different horizontal planes.
The lifting mechanism realizes the lifting of the ray distance meter 17 on the one hand; on the other hand, when the screw rod 14 is lifted, the force point of the lifting platform 16 can be ensured to be positioned on the swinging shaft, so that the force balance of the lifting platform 16 in the upper direction and the lower direction is ensured, the clamping of the lifting platform 16 in the lifting process is avoided, and the movement of the lifting platform 16 is smoother and more stable.
Under elevating system's effect, ray rangefinder 17 not only can realize rotating in single plane to can make ray rangefinder 17 rotate in a plurality of planes through control elevating system, make ray rangefinder 17 can measure the distance of blade everywhere, and then can all-round detection blade everywhere's shape, and then obtain the 3D data of blade, provide more accurate and convenient reference for the distortion point and the distortion position of convenient seek blade.
As shown in fig. 1, the invention is provided with a sensor assembly on a sliding seat 3, wherein the sensor assembly comprises a first proximity sensor 5 and a second proximity sensor 6 which are perpendicular to each other; the first proximity sensor 5 is arranged on the sliding seat 3 through a corner plate 21, the first proximity sensor 5 is parallel to the sliding seat 3 and corresponds to the side surface of the turbine blade 1, and the second proximity sensor 6 is arranged on the sliding seat 3 and is perpendicular to the main shaft of the turbine; the second proximity sensor 6 is in the same plane with the main shaft of the steam turbine; the second proximity sensor 6 is provided on the side of the gusset 21.
The stepping motor 10, the screw motor 15 and the screw nut pair 19 in the embodiment are all electrically connected with a control module, the control module controls the stepping motor 10, the screw motor 15 and the screw nut pair 19 to rotate, the first proximity sensor 5, the second proximity sensor 6 and the ray range finder 17 are electrically connected with a data acquisition module, the data acquisition module collects data sent by the first proximity sensor 5, the second proximity sensor 6 and the ray range finder 17, the data acquisition module is electrically connected with the control module, the data acquisition module is electrically connected with a wireless transceiver module, and the wireless transceiver module sends the data collected by the data acquisition module to a terminal; the specific forms of the control module, the data acquisition module and the wireless transceiver module are commonly found in a common PLC board, and are not described herein.
Example two
In the embodiment, as shown in fig. 2, an arc through groove 12 is formed in the inner side of an arc wall of a fan-shaped frame plate 4, the arc through groove 12 is parallel to an arc rack 7, a hanging sliding block 11 is slidably arranged in the arc through groove 12, and the bottom of the hanging sliding block 11 is fixed with the top surface of a swing rod 8. The hanging sliding block 11 ensures that the swing rod cannot displace or twist in the vertical direction, so that the action of the swing rod 8 is more accurate, and the detection accuracy is improved.
When the invention works, firstly, whether the turbine blade 1 reaches a designated position is judged according to the information of the first proximity sensor 5 and the second proximity sensor 6 received by the data acquisition module; if the specified position is not reached, the position of the first-stage adjusting sliding seat 3 of the main shaft of the turbine is rotated to enable the turbine blade 1 to be detected to reach the specified position. When the first proximity sensor 5 and the second proximity sensor 6 send out electric signals, it can be known that the turbine blade 1 reaches a designated position, then the stepping motor 10 is controlled to act, the distance is measured by the ray range finder 17 once every time the stepping motor 10 acts, a distance value is obtained, and the data collection module packages the rotation amount data of the stepping motor 10, the rotation amount data of the screw motor 15 and the distance information fed back by the ray range finder 17 and sends the packaged data to other terminals, such as a mobile phone, a computer and the like, through the wireless transceiver module. After one-round measurement of the stepping motor 10 is completed, the stepping motor 10 is controlled to return to the initial position, then the screw motor 15 is controlled to act, the ray distance meter 17 is lifted by one height, and then the process is repeated until the position information on all heights of the turbine blade 1 is obtained. After receiving the data packets, other terminals analyze the data packets, and after receiving all the measurement data packets, the other terminals can generate 3D model information of the blade, and then compare the model with the normal turbine blade 1 to obtain the deformation position and deformation amount of the turbine blade 1. Or directly comparing the information in the data packet with the distance information of the normal turbine blade 1 one by manpower, so as to obtain the deformation position and deformation amount of the turbine blade 1.
The invention can realize detection without detaching the main shaft and the blades of the steam turbine, can greatly save the detaching time, and simultaneously does not need to hoist the main shaft of the steam turbine, thereby avoiding the damage of the main shaft in the hoisting process; the detection efficiency of the turbine blade is effectively improved. Meanwhile, the method has the advantages of accurate detection result, convenience in operation, wide application range and the like.
Finally, it should be understood that the foregoing description is merely illustrative of the preferred embodiments of the present invention, and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents or improvements may be made within the spirit and principles of the invention.
Claims (8)
1. The online detection device for the turbine blade is characterized by comprising a mounting seat (2), a sliding seat (3) which is slidably arranged on the mounting seat (2), a swinging mechanism which is arranged on the outer side of the sliding seat (3), and a ray range finder (17) which is arranged on the swinging mechanism and is used for emitting rays to the turbine blade (1) and measuring the distance between the rays and the turbine blade; the ray distance meter (17) moves along with the swinging mechanism in a horizontal plane;
the sensor component is arranged on the side wall of the sliding seat (3) above the swinging mechanism.
2. The online detection device for the turbine blades according to claim 1, wherein the swinging mechanism comprises a fan-shaped frame plate (4) fixedly arranged on the outer side of the sliding seat (3), an arc-shaped rack (7) arranged on the circumferential wall of the fan-shaped frame plate (4), a swinging shaft (13) rotatably arranged at the circle center of the fan-shaped frame plate (4), a swinging rod (8) horizontally arranged on the swinging shaft (13) below the fan-shaped frame plate (4), a stepping motor (10) vertically arranged at the end part of the swinging rod (8) and a driving gear (9) arranged on a transmission shaft of the stepping motor (10), and the driving gear (9) is meshed with the arc-shaped rack (7);
the ray distance meter (17) is arranged at the top of the swinging shaft (13), and the swinging shaft (13) is perpendicular to the main shaft of the steam turbine;
the stepping motor (10) drives the driving gear (9) to rotate, the driving gear (9) moves along the arc-shaped rack (7) and drives the swinging rod (8) to swing, and the swinging rod (8) drives the swinging shaft (13) and the ray range finder (17) to rotate.
3. The online detection device for the turbine blades according to claim 2, wherein a lifting mechanism (20) is arranged on the swinging mechanism, and the swinging shaft (13) is a hollow shaft with upper and lower openings;
the lifting mechanism (20) comprises a screw rod (14), a screw rod motor (15), a lifting table (16) and a guide column (18); the lower gap of the screw rod (14) is arranged in the swinging shaft (13) in a penetrating way, the screw rod motor (15) is fixedly arranged at the top end of the swinging shaft (13), and the screw rod (14) penetrates through the screw rod motor (15) and the swinging shaft (13) and is connected with the screw rod motor (15) in a matching way;
four guide posts (18) are fixed with the fan-shaped frame plate (4) and symmetrically arranged on two sides of a screw motor (15), two guide posts (18) are arranged on each side of the screw motor (15), guide holes on the lifting table (16) are sleeved on the guide posts (18) in a clearance mode, and the top end of the screw (14) is propped against the bottom surface of the lifting table (16); the ray distance meter (17) is fixedly arranged on the top surface of the lifting table (16); the screw motor (15) drives the screw (14) to move up and down, the screw (14) lifts up against the lifting platform (16), the screw (14) moves down to enable the lifting platform (16) to fall down, and the lifting platform (16) drives the ray range finder (17) to move up and down to scan the turbine blades (1) in different horizontal planes.
4. The online detection device for the turbine blades according to claim 2, wherein an arc through groove (12) is formed in the inner side of the arc wall of the fan-shaped frame plate (4), the arc through groove (12) is parallel to the arc rack (7), a hanging sliding block (11) is arranged in the arc through groove (12) in a sliding mode, and the bottom of the hanging sliding block (11) is fixed with the top surface of the swing rod (8).
5. The online detection device for the turbine blades according to claim 1, wherein a screw-nut pair (19) is installed between the installation seat (2) and the sliding seat (3), a screw of the screw-nut pair (19) is installed on the installation seat (2), and a nut of the screw-nut pair (19) is installed on the sliding seat (3).
6. The online detection device for the turbine blades according to claim 2, wherein the sensor assembly comprises a first proximity sensor (5) and a second proximity sensor (6) which are perpendicular to each other; the first proximity sensor (5) is arranged on the sliding seat (3) through a corner plate (21), the first proximity sensor (5) is parallel to the sliding seat (3) and corresponds to the side surface of the turbine blade (1), and the second proximity sensor (6) is arranged on the sliding seat (3) and is perpendicular to the main shaft of the turbine; the second proximity sensor (6) and the main shaft of the steam turbine are in the same plane;
the second proximity sensor (6) is arranged on one side of the angle plate (21).
7. The online detection device for turbine blades according to claim 6, wherein an adapter plate (22) is fixedly arranged on the outer side of the sliding seat (3), and the swinging mechanism and the sensor assembly are both arranged on the adapter plate (22).
8. The online detection device for turbine blades according to claim 1, wherein the radiation distance meter (17) is a laser distance meter or an infrared distance meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310772899.8A CN116839497A (en) | 2023-06-28 | 2023-06-28 | Online detection device for turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310772899.8A CN116839497A (en) | 2023-06-28 | 2023-06-28 | Online detection device for turbine blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116839497A true CN116839497A (en) | 2023-10-03 |
Family
ID=88168211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310772899.8A Pending CN116839497A (en) | 2023-06-28 | 2023-06-28 | Online detection device for turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116839497A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117288835A (en) * | 2023-11-27 | 2023-12-26 | 江苏腾沅机械科技有限公司 | Automatic detection device for turbine blade |
| CN117553730A (en) * | 2024-01-12 | 2024-02-13 | 山东三牛机械集团股份有限公司 | Fan impeller detection mechanism |
-
2023
- 2023-06-28 CN CN202310772899.8A patent/CN116839497A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117288835A (en) * | 2023-11-27 | 2023-12-26 | 江苏腾沅机械科技有限公司 | Automatic detection device for turbine blade |
| CN117288835B (en) * | 2023-11-27 | 2024-01-26 | 江苏腾沅机械科技有限公司 | Automatic detection device for turbine blade |
| CN117553730A (en) * | 2024-01-12 | 2024-02-13 | 山东三牛机械集团股份有限公司 | Fan impeller detection mechanism |
| CN117553730B (en) * | 2024-01-12 | 2024-03-12 | 山东三牛机械集团股份有限公司 | Fan impeller detection mechanism |
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