CN204302235U - The ultrasonic automatic checking device of a kind of root of blade - Google Patents
The ultrasonic automatic checking device of a kind of root of blade Download PDFInfo
- Publication number
- CN204302235U CN204302235U CN201420869156.9U CN201420869156U CN204302235U CN 204302235 U CN204302235 U CN 204302235U CN 201420869156 U CN201420869156 U CN 201420869156U CN 204302235 U CN204302235 U CN 204302235U
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- CN
- China
- Prior art keywords
- wire rope
- steel wire
- guide rail
- flexible guide
- blade
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model belongs to the ultrasonic non-destructive inspection techniques field of steam turbine for nuclear power station blade and other turbine vane, is specifically related to the ultrasonic automatic checking device of a kind of root of blade.Flexible guide rail two ends are fixed on turbine blade two side ends with fixation fork, locking fork respectively; Between turbine blade and flexible guide rail, be evenly equipped with steel wire rope guide pad, in the middle of steel wire rope guide pad, have wire rope gearing pilot hole, steel wire rope is from wire rope gearing pilot hole through forming closed loop, and steel wire rope can move along flexible guide rail; Scanning arm is connected with steel wire rope, and can slide along flexible guide rail; Motor drive is arranged on flexible guide rail, near locking fork outside; Locating rack is fixed on flexible guide rail, and between scanning arm and locking are pitched, motor drive drives steel wire rope motion, and steel wire rope drives scanning arm to move on flexible guide rail.The utility model can adapt to check that free space is little, checked object contour structures complicated situation.
Description
Technical field
The utility model belongs to the ultrasonic non-destructive inspection techniques field of steam turbine for nuclear power station blade and other turbine vane, is specifically related to the ultrasonic automatic checking device of a kind of root of blade.
Background technology
Steam turbine is the critical piece of nuclear power station conventional island, and the parts that in steam turbine, service requirement is the highest, workload is maximum are turbine rotors.Rotor is equipped with seven grade blades, its quantity crosses thousand.Each blade rapidly rotates under exceedingly odious environment, and the root of blade subjects the various stress of tens of up to a hundred tons, in running, therefore easily cause the generation of root of blade crackle.
The integrality of turbine blade structure be related to steam turbine can the key factor of safe and stable operation, due to the restriction of detection space and the space structure of blade construction self complexity, the conventional lossless detection method used in current in-service process is manual ultrasonic and penetrant detecting method.The method checking efficiency is lower, and person works's intensity is large, poor to the defect location checked out, and a kind of testing fixture therefore must be had to make to realize the scanning of turbine blade root automatic ultrasonic.
At present known both at home and abroad automatic checkout equipment, only has the automatic scanning device that ZETEC designs for the steam turbine MARK II type low pressure rotor exhaust stage blade root of Daya Gulf nuclear power.What this device adopted is the trapped orbit agreed with MARKII type spoon of blade, coordinates acquisition analysis system can realize detecting the automatic ultrasonic of fixing section blade root.
Summary of the invention
The purpose of this utility model is to provide a kind of root of blade ultrasonic automatic checking device, to carry out Ultrasonic NDT to steam turbine for nuclear power station blade and other similar blade apparatus.
For achieving the above object, technical solution adopted in the utility model is:
The ultrasonic automatic checking device of a kind of root of blade, comprises motor drive, scanning arm, flexible guide rail, steel wire rope guide pad, steel wire rope, locating rack, locking fork and fixation fork; Flexible guide rail two ends are fixed on turbine blade two side ends with fixation fork, locking fork respectively; Between turbine blade and flexible guide rail, be evenly equipped with steel wire rope guide pad, in the middle of steel wire rope guide pad, have wire rope gearing pilot hole, steel wire rope is from wire rope gearing pilot hole through forming closed loop, and steel wire rope can move along flexible guide rail; Scanning arm is connected with steel wire rope, and can slide along flexible guide rail; Motor drive is arranged on flexible guide rail, near locking fork outside; Locating rack is fixed on flexible guide rail, and between scanning arm and locking are pitched, motor drive drives steel wire rope motion, and steel wire rope drives scanning arm to move on flexible guide rail.
Described motor drive comprises motor, winding drum, winding drum support, winding drum is fixed on winding drum support, motor is connected with winding drum, winding drum has two steel wire rope fixing holes, steel wire rope passes from steel wire rope fixing hole, one end take-up when winding drum rotates, one end unwrapping wire.
Described scanning arm comprises pulley, scanning arm base plate, link, probe, torque spring, probe frame; Scanning arm base plate two ends are respectively arranged with two pulleys, pulley is stuck in flexible guide rail both sides, can slide along flexible guide rail, probe is fixed on probe frame, probe frame is connected by rotating shaft with link, torque spring is through rotating shaft, and the probe on probe frame and rotor blade are fitted, and link is fixed on scanning arm base plate.
Beneficial effect acquired by the utility model is:
The utility model can carry out Ultrasonic NDT to steam turbine for nuclear power station blade and other similar blade apparatus.The utility model can adapt to check that free space is little, checked object contour structures complicated situation.
Accompanying drawing explanation
Fig. 1 is that turbine blade ultrasonic inspection apparatus installs design sketch;
Fig. 2 is that design sketch is overlooked in the installation of turbine blade ultrasonic inspection apparatus;
Fig. 3 is turbine blade ultrasonic inspection apparatus structure chart;
Fig. 4 is turbine blade ultrasonic inspection apparatus and turbine blade binding face design sketch;
Fig. 5 is scanning arm structure chart;
In figure: 1, turbine blade; 2, fixation fork; 3, flexible guide rail; 4, scanning arm; 5, locating rack; 6, motor drive; 7, steel wire rope guide pad; 8, locking fork; 9, steel wire rope; 10, pulley; 11, scanning arm base plate; 12, link; 13, pop one's head in; 14, torque spring; 15, probe frame.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As Figure 1-Figure 5, check that free space is less according to turbine blade 1, and turbine blade 1 contour structures is the features such as irregular cambered surface and form-factor kind are many, the ultrasonic automatic checking device of root of blade described in the utility model comprises motor drive 6, scanning arm 4, flexible guide rail 3, steel wire rope guide pad 7, steel wire rope 9, locating rack 5, locking fork 8 and fixation fork 2; Testing fixture is fixed in turbine blade 1 two side ends with fixation fork 2, locking fork 8 by flexible guide rail 3 two ends respectively, and flexible guide rail 3 can carry out adaptability according to blade outer surface shape and turbine blade 1 outer surface is fitted.Steel wire rope guide pad 7 is evenly equipped with between turbine blade 1 and flexible guide rail 3, ensure there is certain gap between flexible guide rail 3 and turbine blade 1, wire rope gearing pilot hole is had in the middle of steel wire rope guide pad 7, steel wire rope 9 through forming closed loop, ensures that steel wire rope 9 can move along flexible guide rail 3 from wire rope gearing pilot hole.Scanning arm 4 is connected with steel wire rope 9, and can slide along flexible guide rail 3, motor drive 6 is arranged on flexible guide rail 3, and outside locking fork 8, motor drive 6 comprises motor, winding drum, winding drum support, winding drum is fixed on winding drum support, motor is connected with winding drum, and winding drum has two steel wire rope fixing holes, steel wire rope 9 passes from steel wire rope fixing hole, one end take-up when winding drum rotates, one end unwrapping wire; Locating rack 5 is fixed on flexible guide rail 3, ensures that this device is consistent in the location of same grade blade.Between scanning arm 4 and locking fork 8, motor drive 6 drives steel wire rope 9 to move, and steel wire rope 9 drives scanning arm 4 to move on flexible guide rail 3, realizes the covering completely of scanning path.
Scanning arm 4 comprises pulley 10, scanning arm base plate 11, link 12, probe 13, torque spring 14, probe frame 15; Scanning arm base plate 11 two ends are respectively arranged with two pulleys 10, pulley 10 is stuck in flexible guide rail 3 both sides, can slide along flexible guide rail 3, probe 13 is fixed on probe frame 15, probe frame 15 is connected by rotating shaft with link 12, torque spring 14 is through rotating shaft, and the probe 13 on probe frame 15 is fitted with rotor blade 1, and link 12 is fixed on scanning arm base plate 11.
Flexible guide rail structure.Because turbine blade 1 outer surface is irregular cambered surface, and have various shape and dimensions, utilize stainless sheet steel as guide rail, guide rail can adapt to turbine blade contour structures, fits with turbine blade outer surface.Flexible guide rail 3 two ends utilize fixation fork 2 to lock with locking fork 8, highly utilize the locating rack 5 at two ends to determine.Flexible guide rail 3 utilizes the multiple steel wire rope guide pads 7 arranged to determine with the spacing of blade.
Wire rope gearing structure.Because the spacing of steam turbine two blade is less, and motion transmission track is irregular.Motor drives steel wire rope 9 to move around flexible guide rail 3, and steel wire rope 9 drives scanning arm 4 along blade surface scanning campaign.Utilize the multiple steel wire rope guide pads 7 arranged to provide guide-localization to steel wire rope 9 inside flexible guide rail 3, avoid steel wire rope 9 to deviate from flexible guide rail 3.
Scanning arm probe fit body.This scanning arm 4 connects with sliding shoe, sliding shoe utilizes four pulleys 10 to be stuck on flexible guide rail 3 and slides, scanning arm 4 utilize torque spring 14 to make the probe on scanning arm 4 and turbine vane 1 outer surface are flexible all the time fits, realize the inspection of turbine blade 1 root outer surface and inside and outside boss face.
Flexible guide rail structure, makes checkout gear be applicable to the blade of any blade profile.Stainless sheet steel can produce elastic bending deflection, utilize stainless sheet steel as the motion flexibility guide rail 3 of scanning arm 4, when flexible guide rail 3 and turbine blade 1 are drawn close, flexible guide rail 3 can adapt to turbine blade 1 contour structures, and outside flexible guide rail 3 and turbine blade 1, fit in face.
Wire rope gearing structure can be applicable to closely spaced crop leaf measuring in place.Because the spacing of steam turbine two blade is less, and turbine blade 1 outer surface is irregular, and scanning arm 4 motion transmission track is irregular.In the middle of steel wire rope guide pad 7, have steel wire rope 9 transmission pilot hole, motor 6 drives steel wire rope 9 to move around flexible guide rail 3, and scanning arm 4 is fixed on above steel wire rope 9, and steel wire rope 9 drives scanning arm 4 along the surperficial scanning campaign of turbine blade 1.
Scanning arm probe fit body makes probe and blade fit well, increases ultrasound detection sensitivity.Utilize four pulleys 10 to be connected on flexible guide rail 3 by scanning arm 4, between link 12 and probe frame 15, torque spring 14 is housed, makes probe 13 and turbine blade 1 remain laminating.
Utilize the fixation fork 2 at equipment two ends and locking fork 8 to be fixed in turbine blade 1 two side ends by testing fixture, flexible guide rail 3 can carry out adaptability according to blade outer surface shape and turbine blade 1 outer surface is fitted.Uniform steel wire rope guide pad 7 is had between turbine blade 1 and testing fixture, ensure there is certain gap between flexible guide rail 3 and turbine blade 1, in the middle of steel wire rope guide pad 7, have wire rope gearing pilot hole, ensure that steel wire rope 9 can move along flexible guide rail 3.Scanning arm 4 is connected with steel wire rope 9, and motor drive 6 drives steel wire rope 9 to move, and realizes scanning path and covers, and between link 12 and probe frame 15, torque spring 14 is housed, makes probe 13 and turbine blade 1 remain laminating.
During work, be arranged on by this device on turbine blade 1, drive steel wire rope 9 to drive scanning arm 4 to move by motor drive 6, the probe 13 on scanning arm 4 realizes the surface inspection to turbine blade 1.
Claims (3)
1. the ultrasonic automatic checking device of root of blade, is characterized in that: comprise motor drive (6), scanning arm (4), flexible guide rail (3), steel wire rope guide pad (7), steel wire rope (9), locating rack (5), locking fork (8) and fixation fork (2); Fixation fork (2) is used at flexible guide rail (3) two ends respectively, locking fork (8) is fixed on turbine blade (1) two side ends; Steel wire rope guide pad (7) is evenly equipped with between turbine blade (1) and flexible guide rail (3), wire rope gearing pilot hole is had in the middle of steel wire rope guide pad (7), steel wire rope (9) is from wire rope gearing pilot hole through forming closed loop, and steel wire rope (9) can move along flexible guide rail (3); Scanning arm (4) is connected with steel wire rope (9), and can slide along flexible guide rail (3); Motor drive (6) is arranged on flexible guide rail (3), near locking fork (8) outside; Locating rack (5) is fixed on flexible guide rail (3), being positioned at scanning arm (4) and locking pitches between (8), motor drive (6) drives steel wire rope (9) motion, and steel wire rope (9) drives scanning arm (4) upper mobile at flexible guide rail (3).
2. the ultrasonic automatic checking device of root of blade according to claim 1, it is characterized in that: described motor drive (6) comprises motor, winding drum, winding drum support, winding drum is fixed on winding drum support, motor is connected with winding drum, winding drum has two steel wire rope fixing holes, steel wire rope (9) passes from steel wire rope fixing hole, one end take-up when winding drum rotates, one end unwrapping wire.
3. the ultrasonic automatic checking device of root of blade according to claim 1, is characterized in that: described scanning arm (4) comprises pulley (10), scanning arm base plate (11), link (12), probe (13), torque spring (14), probe frame (15); Scanning arm base plate (11) two ends are respectively arranged with two pulleys (10), pulley (10) is stuck in flexible guide rail (3) both sides, can slide along flexible guide rail (3), probe (13) is fixed on probe frame (15), probe frame (15) is connected by rotating shaft with link (12), torque spring (14) is through rotating shaft, probe (13) on probe frame (15) and rotor blade (1) are fitted, and link (12) is fixed on scanning arm base plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869156.9U CN204302235U (en) | 2014-12-30 | 2014-12-30 | The ultrasonic automatic checking device of a kind of root of blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869156.9U CN204302235U (en) | 2014-12-30 | 2014-12-30 | The ultrasonic automatic checking device of a kind of root of blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302235U true CN204302235U (en) | 2015-04-29 |
Family
ID=53107766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420869156.9U Withdrawn - After Issue CN204302235U (en) | 2014-12-30 | 2014-12-30 | The ultrasonic automatic checking device of a kind of root of blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204302235U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806942A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Blade root ultrasonic automatic inspection device |
| CN112229906A (en) * | 2019-07-15 | 2021-01-15 | 中国航发商用航空发动机有限责任公司 | Aeroengine blade detection device |
-
2014
- 2014-12-30 CN CN201420869156.9U patent/CN204302235U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806942A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Blade root ultrasonic automatic inspection device |
| CN105806942B (en) * | 2014-12-30 | 2018-09-28 | 中核武汉核电运行技术股份有限公司 | A kind of root of blade ultrasound automatic checking device |
| CN112229906A (en) * | 2019-07-15 | 2021-01-15 | 中国航发商用航空发动机有限责任公司 | Aeroengine blade detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20180928 |
|
| AV01 | Patent right actively abandoned |