CN116558432A - Turbine blade tip clearance sensor calibration device and simulated impeller manufacturing method thereof - Google Patents
Turbine blade tip clearance sensor calibration device and simulated impeller manufacturing method thereof Download PDFInfo
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- CN116558432A CN116558432A CN202310433473.XA CN202310433473A CN116558432A CN 116558432 A CN116558432 A CN 116558432A CN 202310433473 A CN202310433473 A CN 202310433473A CN 116558432 A CN116558432 A CN 116558432A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 38
- 238000004088 simulation Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000013461 design Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 238000002310 reflectometry Methods 0.000 claims description 6
- 241000252254 Catostomidae Species 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000010485 coping Effects 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 abstract description 24
- 230000007246 mechanism Effects 0.000 abstract description 5
- 239000000523 sample Substances 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/228—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding thin, brittle parts, e.g. semiconductors, wafers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a calibrating device for a turbine blade tip clearance sensor and a manufacturing method of a simulated impeller. The sensor calibration device comprises a base frame (2), a displacement machine component (5), a motor (7), a simulation impeller (1) and a sucker assembly; the displacement mechanism part is arranged on the base frame, the motor is arranged on the displacement mechanism component, the simulated impeller is arranged on the motor, and the rotation axis of the simulated impeller is vertical to the displacement direction of the displacement mechanism component; the sucker assembly is mounted on the base frame. The manufacturing method of the simulated impeller comprises the following steps: manufacturing a reduced scale analog impeller; obtaining a blade tip clearance signal time sequence curve of the simulated impeller through a blade tip clearance sensor; grinding the blade of the simulated impeller; until the tip clearance signal time sequence curve of the simulated impeller meets the requirement. The sensor calibration device and the method for manufacturing the simulated impeller are convenient for accurately calibrating the detection signal of the blade tip clearance sensor on the turbine on site.
Description
Technical Field
The invention relates to a calibration technology of an impeller detection device of an impeller, in particular to a calibration device of a blade tip clearance sensor of the impeller and a manufacturing method of a simulated impeller of the device.
Background
Impellers are important devices for wide application in aviation, naval vessels, electric power and energy industries. Referring to fig. 1, an impeller 21 is disposed within the impeller 22, and the configuration of the impeller 21 is important for efficient operation of the impeller 22, and therefore, frequent inspection of the impeller 21 is required, either during impeller design or during impeller maintenance.
Among the numerous detection items of the impeller 21, one detection item is to perform tip clearance detection on the impeller 21 by using the tip clearance sensor 23 to obtain a "tip clearance signal timing curve" of each blade in the impeller 21, and evaluate the safe distance between each blade and the casing wall of the turbine 22 according to the tip clearance signal timing curve. Specifically, a tip clearance sensor 23 is installed on the casing wall of the turbine 22, three paths of laser ranging probes are arranged in the tip clearance sensor 23, all the three paths of laser ranging probes face the tip positions of blades in the turbine 21 at a certain angle, when the turbine 21 rotates, the three paths of laser ranging probes range the tip contours of the blades of the swept turbine 21, the ranging data of each moment when the blades sweep are recorded, and then a curve is drawn in a two-dimensional coordinate system with time as an abscissa and ranging data as an ordinate according to the ranging data of each moment, and the curve is the tip clearance signal time sequence curve, as shown in fig. 2. The ranging data is represented by a voltage signal, that is, the ordinate in the two-dimensional coordinate system is the quantization of the voltage signal. The "blade No. 1", "blade No. 2", "blade No. 3" indicated in fig. 2 means the blade order in which the blades on the impeller 21 pass through the tip clearance sensor 23, and the blade No. 1 is the first blade to pass through the tip clearance sensor 23; the "probe No. 1", "probe No. 2", "probe No. 3" indicated in fig. 2 means three laser ranging probes of the tip clearance sensor 23, and curves on the right side are detected and acquired by the "probe No. 1", "probe No. 2", "probe No. 3", respectively. The tip clearance signal timing curve may be used to evaluate the safe distance between each blade and the casing wall of the turbine 22. Such a tip clearance sensor 23 and method of obtaining a tip clearance signal timing profile are well known to those skilled in the art.
The tip clearance sensor 23 may generate signal deviation after a period of use (due to various reasons such as pollution of the blade and aging of the laser), so the tip clearance sensor needs to calibrate the detection signal after a period of use. At present, the calibration of the detection signal of the blade tip clearance sensor is usually implemented in a laboratory, so that a worker is required to detach the blade tip clearance sensor from the turbine at the site of the turbine, then send the blade tip clearance sensor to the laboratory for calibration of the detection signal, and send the blade tip clearance sensor back to the turbine after the calibration of the detection signal is implemented, and the blade tip clearance sensor is reloaded to the turbine.
It should be noted that the turbine as described herein is a generic term for all machines having impellers, such as jet aeroengines having impellers, such as turbines having impellers for thermal power generation, and the like.
Disclosure of Invention
The invention aims to provide a calibrating device for a blade tip clearance sensor of an impeller, which has a simple structure and a small volume, and is convenient to carry to the site to accurately calibrate a detection signal of the blade tip clearance sensor on the impeller. The second purpose of the invention is to provide a manufacturing method of the simulated impeller of the impeller, and the simulated impeller with the standard blade tip simulation configuration can be manufactured for the sensor calibration device by adopting the manufacturing method of the simulated impeller.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a calibrating device of a turbine blade tip clearance sensor comprises a base frame, a displacement machine component, a motor, a simulation impeller and a sucker assembly; the base of the displacement machine component is arranged on the base frame, the motor is arranged on the moving seat of the displacement machine component, the simulated impeller is arranged on the rotating shaft of the motor, and the rotating axis of the simulated impeller is vertical to the displacement direction of the displacement machine component; the sucking disc subassembly is installed on the bed frame, the displacement direction of displacement machine component is perpendicular with the adsorption surface of sucking disc subassembly.
Further, the simulated impeller has a standard tip simulation configuration.
Further, the sensor calibration device also comprises a handle, and one end of the handle is fixedly arranged on the base frame.
Further, the shifter member is a knob rail shifter member.
Further, the sucker assembly comprises a sucker support, two suckers and two sucker fastening nuts, wherein the sucker support is arranged on the base frame, bolt mounting holes are formed in the upper end and the lower end of the sucker support, screw rods are arranged on the back of the suckers, and the screw rods of the two suckers respectively penetrate through the bolt mounting holes in the upper end and the lower end of the sucker support and are respectively in threaded connection with and fastened with the two sucker fastening nuts; the displacement direction of the displacement machine component is perpendicular to the adsorption surface of the sucker.
Further, a plurality of mounting holes are formed in the base frame.
The manufacturing method of the simulated impeller of the turbine comprises the steps that the simulated impeller is arranged in the calibrating device of the blade tip clearance sensor of the turbine; the manufacturing method of the simulated impeller comprises the following steps:
s1, manufacturing a simulation impeller with a reduced proportion according to configuration design parameters of the impeller;
s2, installing the simulated impeller on a motor rotating shaft of the sensor calibration device, and adsorbing and fixing the sensor calibration device at a blade tip clearance sensor position on the turbine casing wall through a sucker assembly, so that the blade tip of the simulated impeller of the sensor calibration device is opposite to the blade tip clearance sensor;
s3, starting a motor of the sensor calibration device to enable the simulated impeller to rotate, detecting the rotated simulated impeller by using a blade tip clearance sensor, and obtaining a blade tip clearance signal time sequence curve of the simulated impeller by using the blade tip clearance sensor;
s4, comparing the tip clearance signal time sequence curve of the simulated impeller with the standard tip clearance signal time sequence curve, and if the comparison shows that the tip clearance signal time sequence curve and the standard tip clearance signal time sequence curve have differences, detaching the simulated impeller from the sensor calibration device, and polishing the blade of the simulated impeller;
s5, repeating the steps S2 to S4 until the comparison result of the tip clearance signal time sequence curve of the simulated impeller and the standard tip clearance signal time sequence curve is consistent.
Further, the coping process includes: polishing the surface of the simulated impeller blade to reduce the thickness of the blade; coating a coating with a certain reflectivity on the surface of the simulated impeller blade so as to simulate the illumination reflectivity of the real blade; grinding the blade tip profile of the simulated impeller blade to change the radian of the blade tip profile; grinding the side profile of the simulated impeller blade to change the radian of the side profile of the blade.
The sensor calibration device is provided with the simulated impeller driven by the motor to rotate, and the simulated impeller has a standard blade tip simulation configuration, so that a blade tip contour moving trace completely conforming to a standard blade tip gap signal time sequence curve can be provided for the blade tip gap sensor, an accurate calibration standard can be provided for calibrating a detection signal of the blade tip gap sensor, and the blade tip gap sensor can complete accurate detection signal calibration on the basis.
Compared with the prior art, the sensor calibration device and the method for manufacturing the simulated impeller thereof have the beneficial effects that: the sensor calibration device can complete accurate detection signal calibration of the blade tip clearance sensor, has the advantages of simple structure and small size, is convenient for workers to carry, can carry the sensor calibration device to the site of the turbine, and then directly calibrate the detection signal of the blade tip clearance sensor installed on the turbine on the site. The simulated impeller manufactured by the method for manufacturing the simulated impeller has a standard blade tip simulation configuration, and the sensor calibration device provided with the simulated impeller can provide an accurate calibration reference for calibrating detection signals of a blade tip clearance sensor.
Drawings
FIG. 1 is a schematic illustration of a turbine case wall mounted tip clearance sensor to detect an impeller;
FIG. 2 is a timing graph of tip clearance signals obtained by a tip clearance sensor detecting an impeller;
FIG. 3 is a schematic structural view of the turbine blade tip clearance sensor calibration apparatus of the present invention;
FIG. 4 is an exploded view of the sensor calibration device of the present invention;
FIG. 5 is a schematic view of the structure of a displacer member in a sensor calibration device according to the present invention;
FIG. 6 is a schematic diagram of a sensor calibration device for calibrating a test signal from a tip clearance sensor according to the present invention.
In the figure: 1-simulation impeller, 2-base frame, 3-handle, 4-handle connecting block, 5-displacement machine component, 51-base, 52-adjusting knob, 53-moving seat, 54-locking screw, 55-guide rail, 6-motor bracket, 7-motor, 8-sucker bracket, 9-sucker, 10-sucker fastening nut, 11-axle sleeve, 21-impeller, 22-impeller, 23-blade tip clearance sensor.
Description of the embodiments
First, some concepts referred to herein are described as follows:
reference herein to "tip-to-casing wall design clearance" refers to the pre-designed actual impeller blade tip-to-casing wall distance.
The "tip clearance signal timing curve of the impeller" referred to herein refers to a tip clearance signal timing curve obtained by detecting tip clearance of the impeller using a tip clearance sensor.
The reference to the "standard tip clearance signal timing curve" herein refers to a tip clearance signal timing curve obtained by detecting tip clearance of a real impeller conforming to a design standard by using a tip clearance sensor in advance.
The invention is further described with reference to the drawings and the specific embodiments below:
referring to fig. 3 to 6, the embodiment provides a calibrating device for a blade tip clearance sensor of an impeller, which has the advantages of simple structure and small volume, and is convenient to carry to the site to accurately calibrate a detection signal of the blade tip clearance sensor on the impeller.
Referring to fig. 3 and 4, the sensor calibration device of the present embodiment includes a base frame 2, a handle 3, a handle connection block 4, a displacement machine member 5, a motor bracket 6, a motor 7, a simulation impeller 1, a shaft sleeve 11, and a suction cup assembly.
The base frame 2 is U-shaped as a whole, one side of the U-shaped is a first side, and the other side is a second side. In addition, a plurality of mounting holes are formed in the base frame 2, and the mounting holes extend through the whole base frame 2, through which other components can be mounted at any position of the base frame 2, and a handle connection block 4, a displacer member 5 and a suction cup assembly, which will be described later, are mounted through bolts.
The handle connection block 4 is mounted on the first side of the base frame 2 by a bolt, and one end of the handle 3 is mounted on the handle connection block 4 by a bolt, i.e., one end of the handle 3 is fixedly mounted on the first side of the base frame 2 by the handle connection block 4. The handle 3 is arranged on the sensor calibration device, so that staff can grasp and tamper the sensor calibration device conveniently.
Referring to fig. 5, the displacer member 5 is a knob rail displacer member. Specifically, the displacement machine member 5 includes a base 51 and a movable seat 53, a guide rail 55 is disposed on the base 51, a guide rail groove is formed below the movable seat 53, and when the guide rail groove of the movable seat 53 is matched with the guide rail 55 of the base 51, the movable seat 53 can perform linear displacement along the guide rail 55 relative to the base 51, and the linear displacement direction of the movable seat 53 relative to the base 51 is the displacement direction of the displacement machine member 5. An adjusting knob 52 is arranged on the side surface of the movable seat 53, one end of the adjusting knob 52 is in transmission connection with a displacement transmission mechanism in the movable seat 53, and the movable seat 53 can be controlled to displace on the base 51 by rotating the adjusting knob 52. The locking screw 54 serves to lock the movable seat 53, and the movable seat 53 cannot be displaced relative to the base 51 when the locking screw 54 is tightened. In addition, a length scale is provided on the base 51 to facilitate observation of the displacement position of the movable seat 53 with respect to the base 51. The knob rail shifter component is a mechanism component in the prior art, and the specific structure and function of the knob rail shifter component are common knowledge of those skilled in the art.
Referring to fig. 3 and 4, the base of the displacer member 5 is mounted in a U-shaped recess in the middle of the base frame 2 by bolts, the motor bracket 6 is mounted on the moving seat of the displacer member 5 by bolts, the motor 7 is mounted on the motor bracket 6, that is, the motor 7 is mounted on the moving seat of the displacer member 5 by the motor bracket 6, the dummy impeller 1 is mounted on the rotating shaft of the motor 7 by a shaft sleeve 11, and the dummy impeller 1 is detachably replaced. The axis of rotation of the dummy impeller 1, or the axis of rotation of the motor 7, is perpendicular to the displacement direction (the direction of the guide rail 55) of the displacement machine member 5.
The motor 7 is powered by a lithium battery (not shown).
The simulated impeller 1 has a standard tip simulation configuration. The expression "having a standard tip clearance simulation configuration" as used herein means that the tip clearance signal timing curve obtained by the tip clearance sensor detecting the simulated impeller 1 is identical to the standard tip clearance signal timing curve.
The suction cup assembly is mounted on a second side of the base frame 2. Specifically, the sucking disc subassembly includes sucking disc support 8, two sucking discs 9 and two sucking disc fastening nuts 10, sucking disc support 8 passes through the bolt mounting on the second side of bed frame 2, and bolt mounting holes have all been seted up at the upper and lower both ends department of sucking disc support 8, two sucking discs 9 install the bolt mounting holes department at both ends about sucking disc support 8 respectively, specifically, the fixed screw that is provided with in back of sucking disc 9, sucking disc 9's screw rod passes behind the bolt mounting hole with sucking disc fastening nut 10 threaded connection and screw up fixedly.
The displacement direction of the displacement machine component 5 is perpendicular to the adsorption surface of the sucker 9 of the sucker assembly, so that the simulated impeller 1 and the motor 7 can be driven to be far away from or close to the turbine casing wall adsorbed by the sucker assembly.
Referring to fig. 6, when the sensor calibration device of the present embodiment is used to calibrate the tip clearance sensor 23 on the casing wall of the turbine 22, the suction cup component (suction cup 9) of the sensor calibration device is sucked and fixed at the position of the tip clearance sensor 23 on the casing wall of the turbine 22, so that the tip of the simulated impeller 1 faces the tip clearance sensor 23, then the displacement machine member 5 is adjusted, so that the distance between the tip of the simulated impeller 1 and the tip clearance sensor 23 conforms to the "tip-to-casing wall design distance", then the motor 7 is started to drive the simulated impeller 1 to rotate, when the tip of the blade of the simulated impeller 1 passes the tip clearance sensor 23, the tip clearance sensor 23 is provided with a tip profile moving trace conforming to the "standard tip clearance signal timing curve", and the tip clearance sensor 23 can perform calibration according to the profile tip profile moving trace.
The sensor calibration device of the embodiment is provided with the simulated impeller 1 driven by the motor 7 to rotate, and the simulated impeller 1 has a standard blade tip simulation configuration, so that a blade tip contour moving trace completely conforming to a standard blade tip gap signal time sequence curve can be provided for a blade tip gap sensor, an accurate calibration standard can be provided for the calibration of detection signals of the blade tip gap sensor, and on the basis, the blade tip gap sensor can complete accurate calibration of detection signals. In addition, the sensor calibration device of the embodiment has the advantages of simple structure and small size, is convenient for a worker to carry, the worker can carry the sensor calibration device to the field of the turbine, then the detection signal calibration is directly carried out on the tip clearance sensor arranged on the turbine on the field, compared with the detection signal calibration carried out in a laboratory, the complicated process of disassembling and assembling the movable tip clearance sensor is omitted, thereby improving the working efficiency, and the situation that the signal deviation is still certain after the calibrated tip clearance sensor is arranged on the turbine in the laboratory due to great difference between the environment of the laboratory and the working condition environment of the field of the turbine is avoided, and the data obtained by detecting the impeller is more accurate through the tip clearance sensor for detecting the signal.
Since the configuration of the impeller blades is different for different types of impellers. In the production operation site, a corresponding simulation impeller can be manufactured and prepared for each type of impeller, when the detection signal calibration is required for a blade tip clearance sensor on a certain type of impeller, the simulation impeller corresponding to the type of impeller is arranged on a motor of a sensor calibration device, and then the sensor calibration device is used for carrying out the detection signal calibration for the blade tip clearance sensor.
The embodiment also provides a manufacturing method of the impeller simulation impeller. The simulated impeller is the simulated impeller 1 installed in the sensor calibration device.
The method for manufacturing the simulated impeller of the present embodiment includes S1 to S5.
S1, manufacturing a simulation impeller with a reduced scale for a certain type of impeller according to the configuration design parameters of the impeller.
S2, installing the simulated impeller on a rotating shaft of a motor 7 of the sensor calibration device, adsorbing and fixing the sensor calibration device at a blade tip clearance sensor position on a turbine casing wall through a sucker assembly, enabling the blade tip of the simulated impeller 1 of the sensor calibration device to face the blade tip clearance sensor, and then adjusting a displacement machine component 5 to enable the distance between the blade tip of the simulated impeller 1 and the blade tip clearance sensor to be in accordance with the blade tip-casing wall design distance.
S3, starting a motor 7 of the sensor calibration device to enable the simulated impeller 1 to rotate, detecting the rotating simulated impeller by adopting a blade tip clearance sensor, and obtaining a blade tip clearance signal time sequence curve of the simulated impeller by the blade tip clearance sensor.
S4, comparing the tip clearance signal time sequence curve of the simulated impeller with the standard tip clearance signal time sequence curve, if the comparison shows that the two curves have differences, detaching the simulated impeller from the sensor calibration device, and then polishing the blade of the simulated impeller according to the differences obtained by the comparison so that the tip clearance signal time sequence curve of the simulated impeller can be consistent with the standard tip clearance signal time sequence curve.
The coping process includes:
polishing the surface of the simulated impeller blade to reduce the thickness of the blade;
coating a coating with a certain reflectivity on the surface of the simulated impeller blade so as to simulate the illumination reflectivity of a real blade, so that the simulated impeller blade can correctly reflect a laser ranging signal;
grinding the blade tip profile of the simulated impeller blade to change the radian of the blade tip profile;
grinding the side profile of the simulated impeller blade to change the radian of the side profile of the blade.
S5, repeating the steps S2 to S4 until the comparison result of the tip clearance signal time sequence curve of the simulated impeller and the standard tip clearance signal time sequence curve is consistent.
The simulated impeller manufactured by the simulated impeller manufacturing method of the embodiment has the advantages that the tip clearance signal time sequence curve is consistent with the standard tip clearance signal time sequence curve, namely, the simulated impeller has a standard tip simulation configuration, the sensor calibration device provided with the simulated impeller can provide an accurate calibration reference for calibrating the detection signal of the tip clearance sensor, and the tip clearance sensor can complete accurate detection signal calibration on the basis.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention, therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a turbine apex clearance sensor calibration device which characterized in that: comprises a base frame (2), a displacement machine component (5), a motor (7), a simulation impeller (1) and a sucker assembly;
the base of the displacement machine component (5) is arranged on the base frame (2), the motor (7) is arranged on the moving seat of the displacement machine component (5), the simulation impeller (1) is arranged on the rotating shaft of the motor (7), and the rotating axis of the simulation impeller (1) is perpendicular to the displacement direction of the displacement machine component (5);
the sucking disc subassembly is installed on bed frame (2), the displacement direction of displacement machine component (5) is perpendicular with the adsorption plane of sucking disc subassembly.
2. The turbine blade tip clearance sensor calibration apparatus of claim 1, wherein: the simulated impeller (1) has a standard tip simulation configuration.
3. The turbine blade tip clearance sensor calibration apparatus of claim 1, wherein: the sensor calibration device further comprises a handle (3), and one end of the handle (3) is fixedly arranged on the base frame (2).
4. The turbine blade tip clearance sensor calibration apparatus of claim 1, wherein: the shifter component (5) is a knob guide rail shifter component.
5. The turbine blade tip clearance sensor calibration apparatus of claim 1, wherein: the sucker assembly comprises a sucker support (8), two suckers (9) and two sucker fastening nuts (10), wherein the sucker support (8) is installed on the base frame (2), bolt installation holes are formed in the upper end and the lower end of the sucker support (8), screw rods are arranged on the back of the sucker (9), and the screw rods of the two suckers (9) penetrate through the bolt installation holes in the upper end and the lower end of the sucker support (8) respectively and are in threaded connection with the two sucker fastening nuts (10) and fastened;
the displacement direction of the displacement machine component (5) is perpendicular to the adsorption surface of the sucker (9).
6. The turbine blade tip clearance sensor calibration apparatus of claim 1, wherein: the base frame (2) is provided with a plurality of mounting holes.
7. A method of manufacturing a simulated impeller for an impeller, the simulated impeller being for installation in an impeller tip clearance sensor calibration apparatus according to any one of claims 1 to 6;
the method is characterized in that: the manufacturing method of the simulated impeller comprises the following steps:
s1, manufacturing a simulation impeller with a reduced proportion according to configuration design parameters of the impeller;
s2, installing the simulated impeller on a rotating shaft of a motor (7) of the sensor calibration device, and adsorbing and fixing the sensor calibration device at a blade tip clearance sensor position on the turbine casing wall through a sucker assembly, so that the blade tip of the simulated impeller (1) of the sensor calibration device is opposite to the blade tip clearance sensor;
s3, starting a motor (7) of the sensor calibration device to enable the simulated impeller (1) to rotate, detecting the rotating simulated impeller by adopting a blade tip clearance sensor, and obtaining a blade tip clearance signal time sequence curve of the simulated impeller by the blade tip clearance sensor;
s4, comparing the tip clearance signal time sequence curve of the simulated impeller with the standard tip clearance signal time sequence curve, and if the comparison shows that the tip clearance signal time sequence curve and the standard tip clearance signal time sequence curve have differences, detaching the simulated impeller from the sensor calibration device, and polishing the blade of the simulated impeller;
s5, repeating the steps S2 to S4 until the comparison result of the tip clearance signal time sequence curve of the simulated impeller and the standard tip clearance signal time sequence curve is consistent.
8. The impeller simulation method according to claim 7, wherein: the coping process includes:
polishing the surface of the simulated impeller blade to reduce the thickness of the blade;
coating a coating with a certain reflectivity on the surface of the simulated impeller blade so as to simulate the illumination reflectivity of the real blade;
grinding the blade tip profile of the simulated impeller blade to change the radian of the blade tip profile;
grinding the side profile of the simulated impeller blade to change the radian of the side profile of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310433473.XA CN116558432A (en) | 2023-04-21 | 2023-04-21 | Turbine blade tip clearance sensor calibration device and simulated impeller manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310433473.XA CN116558432A (en) | 2023-04-21 | 2023-04-21 | Turbine blade tip clearance sensor calibration device and simulated impeller manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117191386A (en) * | 2023-11-08 | 2023-12-08 | 山东豪迈机械制造有限公司 | Compressor mechanical operation test device and test method |
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2023
- 2023-04-21 CN CN202310433473.XA patent/CN116558432A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117191386A (en) * | 2023-11-08 | 2023-12-08 | 山东豪迈机械制造有限公司 | Compressor mechanical operation test device and test method |
| CN117191386B (en) * | 2023-11-08 | 2024-02-02 | 山东豪迈机械制造有限公司 | Compressor mechanical operation test device and test method |
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