CN105203634B - Suitable for turbine generator stator bar and the device of connector Non-Destructive Testing - Google Patents
Suitable for turbine generator stator bar and the device of connector Non-Destructive Testing Download PDFInfo
- Publication number
- CN105203634B CN105203634B CN201510701522.9A CN201510701522A CN105203634B CN 105203634 B CN105203634 B CN 105203634B CN 201510701522 A CN201510701522 A CN 201510701522A CN 105203634 B CN105203634 B CN 105203634B
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- Prior art keywords
- turbine generator
- connector
- generator stator
- destructive testing
- stator bar
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- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 28
- 239000000523 sample Substances 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Abstract
It is described to include suitable for turbine generator stator bar and the device of connector Non-Destructive Testing the present invention provides a kind of device suitable for turbine generator stator bar and connector Non-Destructive Testing：Shell；Handle, is arranged on the outside of the shell；Probe grooves, are set in the housing；Elastic device, is set in the housing, and pushes against the probe grooves；Pressing device, pushes against the elastic device, and protruding from the shell.The present invention can easily detect bar and the whole welding region of connector, be more advantageous to the accuracy of result.
Description
Technical field
The present invention relates to hydrogenerator field, and in particular to one kind be suitable for turbine generator stator bar and connector without
Damage the device of detection, i.e., it is a kind of to be suitable for turbine generator stator bar and the special auxiliary device of connector Non-Destructive Testing.
Background technology
The stator coil of hydrogenerator uses two kinds of structures of frame or bar formula, after the installation of coil embedding, is required for line
The upper and lower end parts of circle are connected with copper billet, and coupling part is known as and connector, and connector is completed frequently with soldering, a water wheels
The stator coil of generator is along the circumferential direction distributed up to a hundred and connector.
Generator in operation, in the electric current and stator slot of stator coil the effect of transverse magnetic field slot bar is born
Sizable electromagnetic force.When simultaneously weld is bad for stator end, will make to loosen in groove, in unit operation, by force
Big electromagnetic force can make stator bar that electric and magnetic oscillation occur in groove, so that the insulation of bar produces mechanical wear, and go out
Electric discharge in existing groove；In addition, during failure welding, resistance increases, and when operation will produce high temperature, these can accelerate the old of bar insulation
Change, eventually cause stator bar breakdown, cause generating set protection act to trip, influence the safe operation of power plant.Therefore butt welding
Connector is effectively examined, and could effectively avoid the generation of problems.
Ultrasound examination is carried out to bar and connector, effectively its welding quality can be detected, ensure the safety of unit
Operation, but due to and connector before gap very little, gap is generally within 3cm, when being detected with hand by probe, gap
It is narrow and small, it is unfavorable for very much the development of detection, not only influences the efficiency of detection, but also influence the accuracy of detection.
In conclusion problems with exists in the prior art：Hand is detected turbine generator stator bar simultaneously by probe
During connector, it is unfavorable for the development of detection.
The content of the invention
Present invention offer is a kind of to be suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, to solve water wheels
The problem of simultaneously connector is detected generator stator bar with hand by probe, detection inconvenience.
For this reason, the present invention proposes a kind of device suitable for turbine generator stator bar and connector Non-Destructive Testing, it is described
Include suitable for turbine generator stator bar and the device of connector Non-Destructive Testing：
Shell；
Handle, is arranged on the outside of the shell；
Probe grooves, are set in the housing；
Elastic device, is set in the housing, and pushes against the probe grooves；
Pressing device, pushes against the elastic device, and protruding from the shell.
Further, the handle is hinged on the outside of the shell.
Further, the pressing device includes：Sequentially connected briquetting and jackscrew.
Further, the elastic device is compression spring.
Further, the shell is cylindrical shape, and the probe grooves, compression spring, briquetting and jackscrew are sequentially connected arrangement.
Further, in the compression spring under natural conditions, the end of the shell is stretched out in the end of jackscrew.
Further, the outer end of jackscrew is ball.
Further, the length of the shell is less than or equal to 3cm.
Further, the length of the handle is more than or equal to 4cm.
Further, the handle is equal apart from the both ends of the shell with the hinge joint of the shell.
In use, probe is put into probe grooves first, and it is fixed tight.Briquetting is pinned to be put in probe grooves and pressing device
Between two bars and connector, briquetting is unclamped.Probe grooves and pressing device is allowed to be stuck in naturally between two and connector.To detect
And daubing coupling agent on connector.Grasp device handle, it is mobile should be suitable for turbine generator stator bar and connector without
The device of detection is damaged, pair simultaneously connector progress scanning, and record the defects of found.The present invention is carrying out bar and tool joint monitor
When, there is provided a conveniently mode, can overcome conventional detection limited due to space caused by missing inspection, and easy to move
Dynamic scanning, while the labor intensity of testing staff is alleviated, improve detection efficiency.
Brief description of the drawings
Fig. 1 is the main view for being suitable for turbine generator stator bar and the device of connector Non-Destructive Testing of the embodiment of the present invention
The dimensional structure diagram in direction；
Fig. 2 be the embodiment of the present invention be suitable for the device of turbine generator stator bar and connector Non-Destructive Testing after
The dimensional structure diagram of apparent direction；
Fig. 3 is the side for being suitable for turbine generator stator bar and the device of connector Non-Destructive Testing of the embodiment of the present invention
Depending on structure diagram；
Fig. 4 is the C-C schematic cross-sectional views of Fig. 3.
Drawing reference numeral explanation：
1 shell, 2 handle, 3 probe grooves 4 compression spring, 5 briquetting, the 6 probe fixed screw of jackscrew 9
Embodiment
In order to which the technical features, objects and effects of the present invention are more clearly understood, now control brief description of the drawings is of the invention.
Fig. 1 to Fig. 4 show it is according to an embodiment of the invention be suitable for turbine generator stator bar and connector it is lossless
The structure of the device of detection, as shown in Figure 1, according to an embodiment of the invention be suitable for turbine generator stator bar and connector
The device of Non-Destructive Testing includes：
Shell 1, shell have inner cavity, accommodate or support miscellaneous part；
Handle 2, is arranged on the outside of the shell 1；
Probe grooves 3, are arranged in the shell 1, for installing or accommodating probe；
Elastic device, is set in the housing, and pushes against the probe grooves 3；
Pressing device, pushes against the elastic device, and protruding from the shell.
By elastic device and pressing device probe grooves and pressing device can be made to be put between two bars and connector, be not required to
Human hand is inserted into the small space between two bars and connector, with regard to that can make entirely to be suitable for turbine generator stator bar and connector
The device automatic clamping of Non-Destructive Testing is between two and connector.Device handle is grasped, it is mobile to be suitable for hydrogenerator
The device of stator bar and connector Non-Destructive Testing, carries out scanning to want scanning and connector, completes to detect.Since probe is outside
Shell is arranged between two and connector, and handle is located at outside shell, so, whole scanning and mobile scanning process are all not required to very important person
Hand is inserted into the small space between two bars and connector, thus, there is provided a conveniently mode, can overcome routine
Missing inspection caused by detection is limited due to space, and scanning easy to remove, while the labor intensity of testing staff is alleviated, improve
Detection efficiency.
It is suitable for turbine generator stator bar and connector when a side of complete one of scanning and connector and then by this
The device of Non-Destructive Testing turns 180 degree, alignment probe another and connector, still by the device card two and connector it
Between, with probe scanning another and connector, so as to be quickly completed two adjacent and connector scannings.
Further,, can so as in scanning as Fig. 2 and Fig. 3, the handle 2 are hinged on the outside of the shell 1
Flexible angle adjustment.
Further, as shown in Figure 1, the pressing device includes：Sequentially connected briquetting 5 and jackscrew 6, in this way, structure
It is compact, easy to fabrication and installation.
Further, as shown in figure 4, the elastic device is compression spring 4, cost is low, simple in structure, is easily installed.
Further, as shown in Figures 2 and 3, shell 1 is cylindrical shape, and the probe grooves 3, compress spring 4, briquetting 5 and top
Silk 6 is sequentially connected arrangement, and the side of shell 1 can be closing, with the associated components inside protection, in this way, it is compact-sized, it is suitable
In close gap.
Further, as shown in Figure 1, the shell is stretched out in the end of jackscrew in the compression spring 4 under natural conditions
End, so as to being clamped between two bars and connector for elasticity, obtain enough frictional force, it is not necessary to which human hand goes to help.
Further, as shown in Figure 1, the outer end of jackscrew 6 is ball, ball is internally connected with spring, in this way, can be real
Now entirely it is suitable for the device of turbine generator stator bar and connector Non-Destructive Testing simultaneously flexible mobile on connector side.
Further, the length of the shell 1 is less than or equal to 3cm, to be placed between two bars and connector.
Further, the length of the handle is more than or equal to 4cm, so that human hand can be operated outside simultaneously connector.
Further, the handle 2 is equal apart from the both ends of the shell with the hinge joint of the shell.I.e. handle is hinged
In the centre position of the shell, in this way, all angles easy to human hand outside simultaneously connector can be operated.
In use, probe is put into probe grooves first, and it is by fixed screw 9 of popping one's head in that probe is fixed tight.Pin pressure
Block is put in whole device between two bars and connector, unclamps briquetting 5.The device is allowed to be stuck in naturally between two and connector.
The daubing coupling agent on to be detected and connector.Device handle 2 is grasped, moves the device, pair simultaneously connector progress scanning, and
The defects of record is found.The present invention is carrying out bar and during tool joint monitor, there is provided a conveniently mode, Neng Gouke
Missing inspection caused by conventional detection is limited due to space is taken, while alleviates the labor intensity of testing staff
During the present invention solves turbine generator stator bar and tool joint monitor, due to narrow space there are bar simultaneously
The problem of connector can not be detected reliably.The present invention can easily detect bar and the whole welding region of connector, more favorably
In the accuracy of result.
The foregoing is merely the schematical embodiment of the present invention, the scope of the present invention is not limited to.For this
Each part of invention can be mutually combined under conditions of not conflicting, any those skilled in the art, not depart from this
Made equivalent variations and modification, should all belong to the scope of protection of the invention on the premise of the design of invention and principle.
Claims (10)
1. a kind of be suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, it is characterised in that described to be suitable for
The device of turbine generator stator bar and connector Non-Destructive Testing includes：
Shell；
Handle, is arranged on the outside of the shell；
Probe grooves, are set in the housing；
Elastic device, is set in the housing, and pushes against the probe grooves；
Pressing device, pushes against the elastic device, and protruding from the shell；
It is described to pass through the elastic device and the pressure suitable for turbine generator stator bar and the device of connector Non-Destructive Testing
Tight device is flexibly clamped between two bars and connector.
2. exist as claimed in claim 1 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In the handle is hinged on the outside of the shell.
3. exist as claimed in claim 2 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In the pressing device includes：Sequentially connected briquetting and jackscrew.
4. exist as claimed in claim 3 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In the elastic device is compression spring.
5. exist as claimed in claim 4 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In the shell is cylindrical shape, and the probe grooves, compression spring, briquetting and jackscrew are sequentially connected arrangement.
6. exist as claimed in claim 4 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In, the end of the shell is stretched out in the end of jackscrew in the compression spring under natural conditions.
7. exist as claimed in claim 4 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In the outer end of jackscrew is ball.
8. exist as claimed in claim 1 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In the length of the shell is less than or equal to 3cm.
9. exist as claimed in claim 1 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In the length of the handle is more than or equal to 4cm.
10. exist as claimed in claim 4 suitable for turbine generator stator bar and the device of connector Non-Destructive Testing, its feature
In the handle is equal apart from the both ends of the shell with the hinge joint of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701522.9A CN105203634B (en) | 2015-10-26 | 2015-10-26 | Suitable for turbine generator stator bar and the device of connector Non-Destructive Testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701522.9A CN105203634B (en) | 2015-10-26 | 2015-10-26 | Suitable for turbine generator stator bar and the device of connector Non-Destructive Testing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105203634A CN105203634A (en) | 2015-12-30 |
| CN105203634B true CN105203634B (en) | 2018-04-27 |
Family
ID=54951425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510701522.9A Active CN105203634B (en) | 2015-10-26 | 2015-10-26 | Suitable for turbine generator stator bar and the device of connector Non-Destructive Testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105203634B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112269081A (en) * | 2020-10-14 | 2021-01-26 | 西安交通大学 | Multi-factor aging stress control platform and method for stator bar of large hydraulic generator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570620A (en) * | 2003-07-23 | 2005-01-26 | Pii派普特罗尼克斯有限公司 | Method and equipment for detecting pipeline |
| CN201149587Y (en) * | 2008-01-22 | 2008-11-12 | 长沙理工大学 | Fixed bearing with continuously adjustable clamping force for acoustic emission sensor |
| CN101694482A (en) * | 2009-10-22 | 2010-04-14 | 中国第一重型机械股份公司 | Ultrasonic flaw detection auxiliary device and operating method thereof |
| CN101762638A (en) * | 2009-10-26 | 2010-06-30 | 四川理工学院 | Rotary driving system of tube well inner peeping probe |
| CN203324316U (en) * | 2013-07-04 | 2013-12-04 | 国家电网公司 | Universal clamping device of GIS ultrasonic sensor |
| CN203798777U (en) * | 2014-03-25 | 2014-08-27 | 济钢集团有限公司 | Probe support for human ultrasonic detection on steel plates |
| CN205049523U (en) * | 2015-10-26 | 2016-02-24 | 国家电网公司 | Device suitable for hydraulic generator stator bar connects nondestructive test |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5972764B2 (en) * | 2012-11-21 | 2016-08-17 | 株式会社東芝 | How to use and measure the probe for remaining life diagnosis |
-
2015
- 2015-10-26 CN CN201510701522.9A patent/CN105203634B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570620A (en) * | 2003-07-23 | 2005-01-26 | Pii派普特罗尼克斯有限公司 | Method and equipment for detecting pipeline |
| CN201149587Y (en) * | 2008-01-22 | 2008-11-12 | 长沙理工大学 | Fixed bearing with continuously adjustable clamping force for acoustic emission sensor |
| CN101694482A (en) * | 2009-10-22 | 2010-04-14 | 中国第一重型机械股份公司 | Ultrasonic flaw detection auxiliary device and operating method thereof |
| CN101762638A (en) * | 2009-10-26 | 2010-06-30 | 四川理工学院 | Rotary driving system of tube well inner peeping probe |
| CN203324316U (en) * | 2013-07-04 | 2013-12-04 | 国家电网公司 | Universal clamping device of GIS ultrasonic sensor |
| CN203798777U (en) * | 2014-03-25 | 2014-08-27 | 济钢集团有限公司 | Probe support for human ultrasonic detection on steel plates |
| CN205049523U (en) * | 2015-10-26 | 2016-02-24 | 国家电网公司 | Device suitable for hydraulic generator stator bar connects nondestructive test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105203634A (en) | 2015-12-30 |
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