CN109520562B - Timing detection device for blade end and installation method thereof - Google Patents
Timing detection device for blade end and installation method thereof Download PDFInfo
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- CN109520562B CN109520562B CN201811251069.6A CN201811251069A CN109520562B CN 109520562 B CN109520562 B CN 109520562B CN 201811251069 A CN201811251069 A CN 201811251069A CN 109520562 B CN109520562 B CN 109520562B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/20—Mounting or supporting of plant; Accommodating heat expansion or creep
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Abstract
The blade end timing detection device comprises a blade end timing detection device, a base plate and a detection part, wherein the base plate is used for supporting the power input part, the movement part and the detection part; the main shaft is arranged on a bearing seat through a bearing, the first end of the main shaft is connected with the motor through a coupler, the second end of the main shaft is provided with a wheel disc, and blades are arranged on the wheel disc; the casing is fixed on the bottom plate through a casing bottom plate, the casing surrounds the wheel disc and the blades, a plurality of through holes are uniformly distributed in the casing, and the blade end timing sensor is mounted in the through holes.
Description
Technical Field
The invention relates to the technical field of blade detection, in particular to a blade end timing detection device and an installation method thereof.
Background
The blade end timing technology is an important non-contact type rotating blade vibration parameter measurement technology and has important application in blade vibration measurement of aeroengines and gas turbines. The non-contact measurement method is expected to have more advantages than other conventional measurement methods. The contact measurement is difficult to realize the on-line monitoring of all the blades in the whole machine, and the installation and the use of the sensor are complicated. Therefore, the leaf end timing technology is of great significance as a non-contact type detection device for leaf end timing.
There are two main approaches to consider existing test stations: firstly, the air blower is improved, and a blade end timing sensor is arranged on a casing of the air blower in a punching mode, but the rotating speed of the existing air blower is too low, resonance is difficult to generate under the condition that an excitation source is not responded, and follow-up detection and analysis are not facilitated; secondly, the main shaft is vertically arranged, and the impeller is arranged at the top of the main shaft, so that although the rotating speed of the main shaft can be improved, the rotating speed of the main shaft is inconsistent with the actual working state of the engine, and the working process of the aircraft engine cannot be completely simulated.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
In view of the above problems, the present invention provides a blade end timing detection apparatus and an installation method thereof, which can enable an impeller to reach a maximum rotation speed of 12000rpm, highly simulate the working process of an aircraft engine, and install a blade end timing sensor in the circumferential direction of the impeller to obtain a rotation speed signal, a vertical direction vibration signal and a horizontal direction vibration signal in the rotation process of the impeller in real time; meanwhile, the detection device is provided with two protective covers, so that the safety of the detection process is ensured.
The purpose of the invention is realized by the following technical scheme.
In one aspect of the present invention, a tip timing detecting apparatus includes a base portion, a power input portion, a moving portion, and a detecting portion, wherein,
the base portion includes a base portion having a base portion,
a base plate for supporting the power input portion, the moving portion and the detecting portion;
a power input portion including, in combination,
a motor base fixed on the bottom plate,
a motor base adjusting block fixed on the bottom plate and arranged at two sides of the motor base,
the motor is horizontally arranged on the motor base;
a moving part, which comprises a moving part,
a bearing housing fixed to the base plate via a bearing housing base plate,
a main shaft which is arranged on a bearing seat through a bearing, the first end of the main shaft is connected with the motor through a coupler, the second end is provided with a wheel disc,
a plurality of blades mounted on the disk;
a detection section including, in a liquid crystal display,
a casing fixed to the base plate via a casing base plate, the casing surrounding the wheel disc and the blades, the casing being uniformly provided with a plurality of through holes,
a tip timing sensor mounted at the through hole,
a bracket base plate installed at the casing base plate,
and the sensor bracket is inserted into the bracket bottom plate and surrounds the casing.
In the leaf end timing detection device, the base part also comprises,
a front protective cover for covering the power input portion is mounted on the base plate,
and a rear protective cover for covering the moving part and the detecting part is mounted on the bottom plate.
In the blade end timing detection device, the motor base comprises,
a motor base plate fixed to the base plate,
a motor base supporting block fixed on the motor base bottom plate,
and the motor base top plate is horizontally supported on the motor base supporting block.
In the blade end timing detection device, the bearing and the main shaft are in interference fit, the bearing and the bearing seat are in clearance fit, the bearing end cover bolt is connected with the bearing seat, and the bearing seat bottom plate is positioned on the bottom plate through a positioning pin.
In the timing detection device for the blade end, the first end is a smooth end, and the second end is a threaded end.
In the blade end timing detection device, a wheel disc is fixed at a threaded end through a key groove, a compression nut is in threaded connection with the threaded end, 16 blades which are uniformly distributed are installed on the wheel disc, and a bottom plate of a casing is positioned on the bottom plate through a positioning pin.
In the blade end timing detection device, the motor drives the blades to perform stepless speed regulation at 0-12000 rpm.
In the blade end timing detection device, a positioning block is arranged at the bottom of a casing, the positioning block is in transition fit with a groove in a bottom plate of the casing, and a plurality of threaded through holes for mounting a sensor are uniformly distributed on the casing.
In the blade end timing detection device, 17 through holes with included angles of 15 degrees are uniformly distributed on the casing, and 17 blade end timing sensors are arranged in the through holes.
According to another aspect of the present invention, a method for installing the tip timing detecting device includes the steps of,
in the first step, a motor is arranged on a motor base, the motor base is arranged on a bottom plate through a hexagon socket head cap screw, then a coupler is sleeved on a main shaft, and motor base adjusting blocks are arranged on two sides of the motor base of the bottom plate;
in the second step, the bearing seat and the bearing seat bottom plate are connected through the hexagon socket head cap screw, and the bearing seat bottom plate is fixed on the bottom plate through positioning of the positioning pin;
in the third step, the bearing is arranged on the main shaft in an interference fit manner, then the main shaft is arranged in a bearing seat, the bearing and the bearing seat are in clearance fit, a bearing end cover bolt is connected with the bearing seat,
in the fourth step, the casing and the casing bottom plate are connected through positioning of a positioning pin, the casing bottom plate is fixed on the bottom plate, and then two ends of the sensor support are respectively plugged into mounting holes of the support bottom plate and fixed through hexagon socket head cap bolts;
in the fifth step, the blades are arranged in the wheel disc in an interference fit mode, keys are arranged in key grooves in the main shaft, and the wheel disc is fixed through compression nuts;
in a sixth step, the rear shield is mounted to the base plate and the front shield is mounted to the base plate.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention can realize stepless speed regulation of the rotor at 0-12000rpm, can adjust the alignment degree of the motor shaft and the main shaft to reduce the vibration of the detection table, can replace impellers with different blade types, can preset faults with different types and degrees according to detection requirements, can obtain vibration signals, rotating speed signals and blade end timing signals in real time, and can protect the safety of detection personnel.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly apparent, and to make the implementation of the content of the description possible for those skilled in the art, and to make the above and other objects, features and advantages of the present invention more obvious, the following description is given by way of example of the specific embodiments of the present invention.
Drawings
Various other advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. Also, like parts are designated by like reference numerals throughout the drawings.
In the drawings:
FIG. 1 is a schematic perspective view of a leaf tip timing detection apparatus according to an embodiment of the present invention;
FIG. 2 is a front layout view of a motor base of the tip timing detection apparatus according to one embodiment of the present invention;
FIG. 3 is a front layout view of an impeller and a casing of the tip timing detecting apparatus according to an embodiment of the present invention;
FIG. 4 is a partial cross-sectional view of a bearing block of a tip timing detection device according to one embodiment of the present invention;
FIG. 5 is a partial cross-sectional view of a case of a tip timing detection device according to one embodiment of the present invention;
FIG. 6 is a partial cross-sectional view of a bearing block of a tip timing detection device according to one embodiment of the present invention;
FIG. 7 is a view of the installation of a protective cover of the tip timing detecting device according to one embodiment of the present invention;
FIG. 8 is a partial front layout view of a tip timing detection apparatus according to one embodiment of the present invention;
fig. 9 is a step diagram of a method of installing the tip timing detecting device according to an embodiment of the present invention.
The invention is further explained below with reference to the figures and examples.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to fig. 1 to 9. While specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the invention, but is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the scope of the invention. The scope of the present invention is defined by the appended claims.
For the purpose of facilitating an understanding of the embodiments of the present invention, the following description will be made in terms of several specific embodiments with reference to the accompanying drawings, and the drawings are not intended to limit the embodiments of the present invention.
Embodiments of the present invention will be described in detail with reference to fig. 1 to 8. Fig. 1 is a schematic perspective view of a blade tip timing detecting apparatus according to an embodiment of the present invention, as shown in fig. 1, a blade tip timing detecting apparatus includes a base portion, a power input portion, a moving portion, and a detecting portion, wherein,
the base portion includes a base portion having a base portion,
a base plate 1 for supporting a power input portion, a moving portion and a detecting portion;
a power input portion including, in combination,
a motor base fixed on the bottom plate 1,
a motor base adjusting block 2, the motor base adjusting block 2 fixed on the bottom plate 1 is arranged at two sides of the motor base,
the motor 7 is horizontally arranged on the motor base;
a moving part, which comprises a moving part,
a bearing housing 17 fixed to the base plate 1 via a bearing housing base plate 3,
a main shaft 14 which is arranged on a bearing seat 17 through a bearing 18, a first end of the main shaft 14 is connected with the motor 7 through a coupler 6, a second end is provided with a wheel disc 16,
a plurality of blades 13, the blades 13 being mounted on the disk 16;
a detection section including, in a liquid crystal display,
a casing 12 fixed on the bottom plate 1 through a casing bottom plate 11, wherein the casing 12 surrounds the wheel disc 16 and the blades 13, a plurality of through holes are uniformly distributed on the casing 12,
a tip timing sensor mounted at the through hole,
a bracket bottom plate 4 installed at the casing bottom plate 11,
the sensor bracket 5, the sensor bracket 5 inserted into the bracket bottom plate 4 surrounds the casing 12.
To further understand the present invention, in one embodiment, a tip timing detecting apparatus includes a base portion, a power input portion, a moving portion, and a testing portion; the motor 7 in the power input part is connected with the main shaft 14 in the moving part through the coupling 6; the base part comprises a bottom plate 1, a front protective cover 24 and a rear protective cover 25, wherein the front protective cover 24 and the rear protective cover 25 are both arranged on the bottom plate 1; the power input part comprises a motor 7, a motor base top plate 8, a motor base supporting block 9, a motor base bottom plate 10 and a motor base adjusting block 2; the moving part comprises a main shaft 14, a bearing seat 17, a bearing seat bottom plate 3, 61906 bearings 18, 6006 bearings 19, a bearing end cover 20, a key 21, a wheel disc 16, blades 13, a compression nut 15 and a phi 10 x 40 positioning pin 22, the motor is arranged on a motor base top plate 8, the motor base top plate 8, a motor base supporting block 9 and a motor base bottom plate 10 form a whole motor base, the motor base and a motor base adjusting block 2 are arranged on the bottom plate, and the motor base adjusting block 2 is arranged on two sides of the motor base; the moving part comprises a main shaft 14, a bearing seat 17, a bearing seat bottom plate 3, 61906 bearings 18, 6006 bearings 19, a bearing end cover 20, a key 21, a wheel disc 16, blades 13, a gland nut 15 and a phi 10 x 40 positioning pin 22, wherein the main shaft 14 is arranged in the bearing seat 17 through the 61906 bearings 18 and 6006 bearings 19, the smooth end of the main shaft 14 is connected with a motor 7 through a coupler 6, the wheel disc 16 is arranged on the inner side of the threaded end, the wheel disc 16 is fixed through the gland nut 15, 16 blades 13 are arranged on the wheel disc 16, the main shaft 14 is fixed in the bearing seat 17 through the bearing end cover 20, the bearing seat 17 is arranged on the bearing seat bottom plate 3, and the whole moving part is arranged on the; the testing part comprises a casing 12, a casing bottom plate 11, phi 10 x 35 positioning pins 23, a support bottom plate 4 and a sensor support 5, wherein the casing 12 is installed on the casing bottom plate 11, the support bottom plate 4 is also installed on the casing bottom plate 11, and the sensor support 5 is inserted into the support bottom plate 4.
In one embodiment, further, the motor is connected with the top plate of the motor base through an inner hexagon bolt; the motor in the power input part is connected with the main shaft in the moving part through a coupling.
In one embodiment, the motor 7 is connected with the motor base top plate 8 through a hexagon socket head cap screw; the motor 7 in the power input part is connected with the main shaft 14 in the moving part through a coupling 6.
In one embodiment, the motor base top plate 8 is connected with the two motor base supporting blocks 9 through hexagon socket head cap screws; each motor base supporting block 9 is connected with a motor base bottom plate 10 through an inner hexagon bolt.
In one embodiment, the assembled motor base is connected with the bottom plate 1 through hexagon socket head cap bolts; the diameter of the connecting through hole on the base plate 10 of the motor base is phi 11, and a gap is reserved for adjusting the alignment degree of a motor shaft and a main shaft 14.
In one embodiment, the bearing seat 17 is connected with the bearing seat bottom plate 3 through an inner hexagon bolt and is positioned through 2 positioning pins 22; the bearing seat bottom plate 22 is connected with the bottom plate 1 through a hexagon socket head cap screw.
In one embodiment, the threaded portion at the right end of the main shaft 14 has a keyway on the left side, and the key 21 is mounted on the main shaft 14 by interference fit; the main shaft 14 passes through two bearings: the bearing 6190618 and the bearing 600619 are installed in the bearing seat; after the main shaft 14 is installed in the bearing seat, the bearing end cover is connected with the bearing seat through 4M 6 x 15 hexagon socket head cap bolts, and the axial movement of the main shaft in the bearing seat is prevented.
In one embodiment, 16 blades 13 are mounted on the blisk by interference fit.
In one embodiment, the threads on the right end of the main shaft 14 are M24-LH left hand threads; the compression nut 15 is also an M24-LH left-handed internal thread, and the compression nut and the LH left-handed internal thread are matched to compress the leaf disc 16 to prevent the leaf disc from falling off.
In one embodiment, the bottom plate 11 of the casing is connected with the bottom plate 1 through hexagon socket head cap screws and is positioned through 2 positioning pins 23; a square block with a plurality of protrusions is arranged at the bottom of the casing 12 and is used as a positioning block, the positioning block and a groove on the casing bottom plate 11 are in transition fit for positioning, and the positioning block is connected with the casing bottom plate 11 through a hexagon socket head cap screw; the casing is provided with 17 threaded through holes with an included angle of 15 degrees for mounting the sensor.
In one embodiment, the two ends of the sensor bracket 5 are directly plugged into the through holes at one end of the bracket bottom plate 4 and are respectively fixed with the bracket bottom plate 4 through set screws.
In one embodiment, the bracket bottom plate 4 connected to both ends of the sensor bracket 5 is connected to the casing bottom plate 11 by hexagon socket head cap screws.
In one embodiment, two side bottoms of the front protective cover 24 are respectively provided with 2U-shaped grooves which are connected with the side surface of the bottom plate 1 through hexagon socket head cap screws; the front side of the front protective cover is provided with a square hole for snooping the internal working condition of the detection device; the edges of the bottoms of the two sides of the rear protective cover 25 are provided with convex edges, and each side is provided with three through holes with the diameter of phi 9mm and is connected with the bottom plate 1 through hexagon socket head cap screws.
In a preferred embodiment of the apparatus for detecting the timing of the leaf tip, the base portion further comprises,
a front boot 24, a front boot 23 for covering a power input portion is mounted on the base plate 1,
a rear protection cover 25, and a rear protection cover 25 for covering the moving part and the sensing part are installed on the base plate 1.
In the preferred embodiment of the blade end timing detection device, the motor base comprises,
a motor base bottom plate 10 fixed on the bottom plate 1,
a motor base supporting block 9 fixed on the motor base bottom plate 10,
and the motor base top plate 8 is horizontally supported on the motor base supporting block 9.
In the preferred embodiment of the blade end timing detection device, the bearing 18 and the main shaft 14 are in interference fit, the bearing 18 and the bearing seat 17 are in clearance fit, the bearing end cover 20 is connected with the bearing seat 17 through a bolt, and the bearing seat bottom plate 3 is positioned on the bottom plate 1 through a positioning pin 22.
In a preferred embodiment of the device for detecting the timing of the blade end, the first end is a smooth end and the second end is a threaded end.
In the preferred embodiment of the blade end timing detection device, the wheel disc 16 is fixed at the threaded end through a key slot, the compression nut is in threaded connection with the threaded end, 16 blades 13 are uniformly distributed on the wheel disc 16, and the bottom plate of the casing is positioned on the bottom plate 1 through a positioning pin.
In the preferred embodiment of the blade end timing detection device, the motor 7 drives the blades to perform stepless speed regulation at 0-12000 rpm.
In the preferred embodiment of the blade end timing detection device, the bottom of the casing 12 is provided with a positioning block, the positioning block is in transition fit with a groove on the casing bottom plate 11, and the casing 12 is uniformly provided with a plurality of threaded through holes for mounting sensors.
In the preferred embodiment of the device for detecting the timing of the blade end, 17 through holes with an included angle of 15 degrees are uniformly distributed on the casing 12, and 17 blade end timing sensors are installed in the through holes.
According to another aspect of the present invention, a method for installing the tip timing detecting device includes the steps of,
in the first step S1, the motor is mounted on the motor base, the motor base is mounted on the base plate by the hexagon socket head cap screw, then the coupler is sleeved on the spindle, and the motor base adjusting blocks are mounted on two sides of the motor base of the base plate;
in a second step S2, a socket head and a bearing seat bottom plate are connected by a socket head cap bolt, and the bearing seat bottom plate is fixed on the bottom plate by positioning by a positioning pin;
in a third step S3, the bearing is mounted on the main shaft in an interference fit manner, the main shaft is then installed in the bearing seat, the bearing and the bearing seat are in a clearance fit, the bearing end cover bolt is connected with the bearing seat,
in a fourth step S4, the casing and the casing bottom plate are connected by positioning with the positioning pin, the casing bottom plate is fixed to the bottom plate, and then both ends of the sensor bracket are respectively plugged into the mounting holes of the bracket bottom plate and fixed by hexagon socket head cap bolts;
in a fifth step S5, the blade is mounted in the disk in an interference fit manner, the key is fitted into the key groove on the main shaft, and the disk is fixed by the compression nut;
in a sixth step S6, the rear shield is attached to the base plate, and the front shield is attached to the base plate.
In one embodiment, the assembly process:
firstly, a power part is installed, a motor base top plate 8, a motor base supporting block 9 and a motor base bottom plate 10 are assembled into a motor base through inner hexagonal bolts, a motor 7 is installed on the motor base through the inner hexagonal bolts, the motor base is installed on the bottom plate 1 through the inner hexagonal bolts, then a coupler 6 is sleeved on a main shaft and is not clamped, and then a motor base adjusting block 2 is installed on the bottom plate 1 through the inner hexagonal bolts and is positioned on two sides of the motor base;
secondly, the bearing seat is positioned by 2 phi 10 x 30 positioning pins 22, the bearing seat 17 and the bearing seat bottom plate 3 are connected by an inner hexagonal bolt, and then the bearing seat bottom plate 3 is fixed on the bottom plate 1 by the inner hexagonal bolt through 2 phi 10 x 30 positioning pins 22;
thirdly, a main shaft is installed, 61906 bearings 18 and 6006 bearings 19 are installed on the main shaft 14, the bearings and the main shaft 14 are in interference fit, the main shaft 14 is installed in a bearing seat 17, the bearings and the bearing seat 17 are in clearance fit, and then a bearing end cover 20 and the bearing seat 17 are connected through an inner hexagonal bolt;
fourthly, installing the casing, connecting the casing 12 with the casing bottom plate 11 by using inner hexagonal bolts, positioning by using 2 phi 10 x 40 positioning pins 23, fixing the casing bottom plate 11 on the bottom plate 1 by using the inner hexagonal bolts, connecting the supporting bottom plate 4 with the casing bottom plate 11 by using the inner hexagonal bolts, respectively plugging two ends of the arched bracket 5 into the mounting holes of the two bracket bottom plates 4, and fixing by using the inner hexagonal bolts;
fifthly, installing an impeller, selecting the type of the blade to be detected, installing 16 blades 13 with the same type into a wheel disc 16, installing a key 21 into a key groove on a main shaft 14 in an interference fit manner, installing the whole impeller on the main shaft 14 in the interference fit manner, and fixing the impeller through a compression nut 15;
sixthly, installing the protective cover, installing the rear protective cover 25 on the bottom plate 1 by using the hexagon socket head cap screw, and installing the front protective cover 24 on the bottom plate 1 by using the hexagon socket head cap screw.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.
Claims (5)
1. A timing detecting device for a tip of a blade, which includes a base portion, a power input portion, a moving portion, and a detecting portion,
the base portion includes a base portion having a base portion,
a base plate for supporting the power input portion, the moving portion and the detecting portion;
a power input portion including, in combination,
a motor base fixed on the bottom plate, the motor base comprises,
a motor base bottom plate fixed on the bottom plate, wherein a gap is left in a connecting through hole on the motor base bottom plate for adjusting the alignment degree of a motor shaft and a main shaft,
a motor base supporting block fixed on the motor base bottom plate,
a motor base top plate horizontally supported on the motor base supporting block,
a motor base adjusting block fixed on the bottom plate and arranged at two sides of the motor base,
the motor is horizontally arranged on the motor base and is connected with the top plate of the motor base through an inner hexagon bolt; a motor in the power input part is connected with a main shaft in the motion part through a coupler, and the motor drives blades to perform stepless speed regulation at 0-12000 rpm;
a moving part, which comprises a moving part,
a bearing housing fixed to the base plate via a bearing housing base plate,
a main shaft which is arranged on a bearing seat through a bearing, wherein the first end of the main shaft is connected with the motor through a coupler, the second end of the main shaft is provided with a wheel disc, the first end is a smooth end, the second end is a threaded end,
a plurality of blades mounted on the disk;
a detection section including, in a liquid crystal display,
the casing is fixed on the bottom plate through a casing bottom plate, the casing surrounds the wheel disc and the blades, a plurality of through holes are uniformly distributed on the casing, a positioning block is arranged at the bottom of the casing and is in transition fit with a groove on the casing bottom plate, 17 through holes with an included angle of 15 degrees are uniformly distributed on the casing, 17 blade end timing sensors are mounted in the through holes,
a tip timing sensor mounted at the through hole,
a bracket base plate installed at the casing base plate,
and the sensor bracket is inserted into the bracket bottom plate and surrounds the casing.
2. The tip timing detecting device according to claim 1, wherein the base portion further comprises,
a front protective cover for covering the power input portion is mounted on the base plate,
and a rear protective cover for covering the moving part and the detecting part is mounted on the bottom plate.
3. The tip timing detection device of claim 1, wherein the bearing and the main shaft are in an interference fit, the bearing and the bearing seat are in a clearance fit, the bearing end cap is bolted to the bearing seat, and the bearing seat bottom plate is positioned on the bottom plate via a locating pin.
4. The tip timing detection device according to claim 1, wherein a wheel disc is fixed to the threaded end via a key slot, a compression nut is in threaded connection with the threaded end, 16 uniformly distributed blades are mounted on the wheel disc, and a casing bottom plate is positioned on the bottom plate via a positioning pin.
5. A method of installing the tip timing detecting apparatus according to any one of claims 1 to 4, comprising the steps of,
in the first step (S1), the motor is mounted on the motor base, the motor base is mounted on the base plate by the hexagon socket head cap screw, then the coupler is sleeved on the spindle, and the motor base adjusting blocks are mounted on two sides of the motor base of the base plate;
in the second step (S2), the socket and the bearing seat bottom plate are connected by the socket head cap bolt, and the bearing seat bottom plate is fixed on the bottom plate by positioning by the positioning pin;
in the third step (S3), the bearing is fitted onto the main shaft in an interference fit manner, the main shaft is then installed into the bearing seat, the bearing and the bearing seat are in a clearance fit, the bearing end cap bolt is connected with the bearing seat,
in the fourth step (S4), the casing and the casing bottom plate are connected by positioning with the positioning pin, the casing bottom plate is fixed to the bottom plate, and then both ends of the sensor bracket are respectively inserted into the mounting holes of the bracket bottom plate and fixed by hexagon socket head cap bolts;
in the fifth step (S5), the blade is installed in the disk in an interference fit manner, the key is installed in the key groove on the main shaft, and the disk is fixed by the compression nut;
in the sixth step (S6), the rear shield is attached to the base plate, and the front shield is attached to the base plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811251069.6A CN109520562B (en) | 2018-10-25 | 2018-10-25 | Timing detection device for blade end and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811251069.6A CN109520562B (en) | 2018-10-25 | 2018-10-25 | Timing detection device for blade end and installation method thereof |
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| CN109520562B true CN109520562B (en) | 2021-04-09 |
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| CN101629846B (en) * | 2009-07-31 | 2011-01-05 | 天津大学 | Method for detecting synchronous vibration parameters of high-speed rotary blade under constant speed |
| CN102967459B (en) * | 2012-12-03 | 2015-07-08 | 中国计量学院 | Simulated experiment system for fault of rotary machine |
| CN104568968B (en) * | 2015-01-13 | 2016-04-06 | 西安交通大学 | A kind of blade of wind-driven generator crack detecting method in place and system |
| CN105424160B (en) * | 2015-11-20 | 2019-03-08 | 天津大学 | The method for realizing the identification of blade synchronization vibration parameters |
| CN206992866U (en) * | 2017-06-14 | 2018-02-09 | 浙江正达环保设备有限公司 | A kind of motor adjusting device |
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2018
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