CN109781859A - A kind of pulse reflection piezoelectric supersonic online internal detector linear transducer array cabin - Google Patents
A kind of pulse reflection piezoelectric supersonic online internal detector linear transducer array cabin Download PDFInfo
- Publication number
- CN109781859A CN109781859A CN201910068575.XA CN201910068575A CN109781859A CN 109781859 A CN109781859 A CN 109781859A CN 201910068575 A CN201910068575 A CN 201910068575A CN 109781859 A CN109781859 A CN 109781859A
- Authority
- CN
- China
- Prior art keywords
- cabin
- leather cup
- support
- transducer array
- linear transducer
- Prior art date
- 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.)
- Pending
Links
Abstract
The present invention discloses a kind of linear transducer array cabin of online internal detector of pulse reflection piezoelectric supersonic, the research and development for the online internal detector of oil-gas pipeline containing defect.Described device mainly includes cabin support frame I, cabin support leather cup II, linear transducer array fixed strip III, cabin drawing head IV, signal wire by VI 6 device V, leather cup fixed plate parts.Cabin support frame provides structural support for cabin component；Support is provided when cabin support leather cup is used for on-line checking for cabin；Linear transducer array fixed strip provides fixed position for probe；Cabin drawing head is used for the connection in cabin and other cabins, while the fixation for cabin support leather cup；Signal wire is provided by data line of the device between probe and adjacent cabin passes through space；Leather cup fixed plate is for the fixation between cabin support leather cup and cabin support frame.Present invention combination ultrasound examination principle and the online inner detection technique of oil-gas pipeline require design cabin structure, can be used for the development of the online internal detector of technical grade ultrasound.
Description
Technical field
The present invention relates to Ultrasonic Nondestructive technical fields, and in particular to a kind of pulse reflection piezoelectric supersonic is interior online
The structure in detector probe array cabin designs.
Background technique
Oil gas pipe network is the important infrastructure and people's livelihood engineering of country, to the oil-gas pipeline containing defect for entering the later period of being on active service
Implement online non-destructive testing, taking targetedly defect repair measure according to testing result is the root for ensureing pipe safety operation
This.In oil-gas pipeline on-line checking field, China makes a breakthrough in leakage field internal detector research and development field, realizes technical grade inspection
The production domesticization of measurement equipment, but available detection accuracy is limited, and detection process has strong magnetization to steel pipe.Cause
This, it is still necessary to the online internal detector of ultrasound that research and development detection accuracy is higher, detection process is harmless.
The fields such as ultrasonic detection technology has been widely used in thickness measuring, high temperature detects, welds seam for long distance pipeline detection, and
Detection field in ultrasound, since special equipment research and development difficulty is big, China there is no matured product still in the tackling problems in key technologies stage
Occur.Linear transducer array cabin is the critical component of ultrasonic inspection Pig, and structure design depends on the technical principle of ultrasound detection, can
The structure types such as fox-brush formula, cylinder, spindle formula, modular, rotary are selected, have direct shadow to detection effect in ultrasound
It rings.The design of linear transducer array cabin structure need to comprehensively consider ultrasound detection principle, detector passage capacity, cabin mechanical performance, detection
The factors such as device maintenance requirement pass through the linear transducer array cabin of the trade-off of indices parameter you can get it different structure, knot
The superiority and inferiority of configuration formula still needs to the engineering practice validity check detected in ultrasound.
Summary of the invention
For the development for pushing China's ultrasonic inspection Pig, the present invention provides one kind to be examined based on pulse reflection piezoelectric supersonic
Survey the online internal detector linear transducer array cabin of principle.
The present invention adopts the following technical solutions to achieve:
The linear transducer array cabin of the online internal detector of pulse reflection piezoelectric supersonic includes cabin support frame, cabin branch
It supports leather cup, linear transducer array fixed strip, cabin drawing head, signal wire and passes through six device, leather cup fixed plate parts.
Cabin support frame includes central support posts, the first support ring of linear transducer array fixed strip, linear transducer array fixed strip
Two support rings, the cabin fixed end face of support leather cup；The central support posts are cylindrical body, center axis thereof and other three parts
Central axis is coaxial；First support ring of linear transducer array fixed strip is located at the central support posts right side, on outer side ring surface
Locating groove and fixed bolt hole equipped with linear transducer array fixed strip, the bolt that end face middle part is equipped with fixed cabin support leather cup are logical
Via hole；Second support ring of linear transducer array fixed strip is located on the left of the central support posts, and outer side ring surface is equipped with probe battle array
The locating groove and fixed bolt hole of column fixed strip, end face middle part are equipped with mounting hole of the signal wire by device；The cabin support
The fixed end face of leather cup is located at the central support posts left side, and mounting hole and sealed cabin that signal wire passes through device are equipped in the middle part of end face
The bolt through hole of room support leather cup.
It includes the first support leather cup, the second support leather cup that cabin, which supports leather cup,；The first support leather cup is located at probe battle array
Column fixed strip the first support ring right end face, end face middle part are equipped with the bolt through hole of fixed cabin support leather cup；Described second
Support leather cup is located at cabin support leather cup fixing end left side of face, is equipped with mounting hole and sealed cabin that signal wire passes through device in the middle part of end face
The bolt through hole of room support leather cup.
Linear transducer array fixed strip includes several identical structures and fixed strip independent of each other, probe positioner, positioning bolt；
Probe grooves are equipped in the middle part of the fixed strip, two sides are equipped with bolt hole, are installed on the first support ring of linear transducer array fixed strip and probe
On the outer side ring surface of the second support ring of array fixed strip, fixed after being placed in locating groove by the positioning bolt；The probe
Locator is located at probe grooves two sides, for fixed probe；The positioning bolt is fixed for fixing the fixed strip and the probe
Position device.
Cabin drawing head includes drawing head, fixing bolt；It is cylindrical end face on the right side of the drawing head, is equipped in the middle part of end face
Signal wire supports the bolt through hole of leather cup by the mounting hole and fixed cabin of device, and middle part is curved surface cone, and left side is to connect
Connector, the fixation for universal joint；The fixing bolt sequentially pass through the fixed end face of cabin support leather cup, the second support leather cup,
The bolt through hole of the drawing head, the fixation for the second support leather cup.
Signal wire includes signal wire hole body, fastening female thread by device；The signal wire hole body is that bottom outer surface is equipped with card
Platform, outer surface of cupular part set threaded cylindrical shell, sequentially pass through the second support ring of linear transducer array fixed strip, second support leather cup with
The mounting hole of drawing head, the data line between probe and adjacent cabin circuit board, which provides, passes through space；The fastening female thread is
Inner surface sets threaded cylindrical shell, for fixing the signal wire hole body.
Leather cup fixed plate is cylindrical disc, and the bolt through hole for fixing the first support leather cup is equipped in the middle part of end face, fixed
The first support ring of screw bolt passes linear transducer array fixed strip, the first support leather cup and the bolt of the leather cup fixed plate pass through
The fixation to the first support leather cup is realized in hole.
When ultrasonic inspection Pig works online, cabin supports leather cup to provide the support in pipeline for linear transducer array cabin, simultaneously
Action edge before providing under differential pressure action before and after cabin, linear transducer array fixed strip provide fixed position, probe data line for probe
It is connect by device with adjacent cabin circuit board via signal wire, the cabin drawing head positioned at front passes through the components such as universal joint and its
He is connected in cabin.Linear transducer array cabin provides workbench for the periodic cycle detection work of linear transducer array.
The present invention has the advantage that
(1) linear transducer array cabin structure is compact, and overall appearance size is smaller, is placed in when working online in pipeline with good
Bending tube section passage capacity.
(2) conveyor screw formula linear transducer array fixed strip is used, modular design is safeguarded convenient for the replacement of detector elements.
(3) connecting portion of cabin support frame and linear transducer array fixed strip design has locating groove, and probe grooves two sides are set
There are two probe positioners for meter, can ensure the installation positioning accuracy of probe, improve reliability when on-line checking.
(4) pipeline circumferential direction resolution ratio is 5mm when the linear transducer array cabin on-line checking designed, horizontal in high-resolution, together
When also improve ultrasonic inspection Pig to the receiving allowance of tip damage.
Detailed description of the invention
The shape of each component is only schematic in figure, to help to understand.
Fig. 1 is the cross-sectional view in linear transducer array cabin of the present invention in a preferred embodiment；
Fig. 2 is the side view that cabin shown in Fig. 1 supports the fixed end face of leather cup；
Fig. 3 is the circumferential perspective view of linear transducer array fixed strip shown in Fig. 1.
Specific implementation method
In conjunction with attached drawing and specific implementation example, the present invention will be described in detail.
As shown in Figure 1, the online internal detector linear transducer array of pulse reflection piezoelectric supersonic provided by the invention cabin includes cabin
Room support frame, cabin support leather cup, linear transducer array fixed strip, cabin drawing head, signal wire pass through device, leather cup fixed plate six
Part.Specifically include that central support posts 1, the first support ring of linear transducer array fixed strip 2, the second support ring of linear transducer array fixed strip
3, the fixed end face 4 of cabin support leather cup, locating groove 5, fixed bolt hole 6, bolt through hole 7, fixing bolt 8, signal wire are logical
Cross device mounting hole 9, leather cup fixed plate 10, first supports leather cup 11, second to support leather cup 12, linear transducer array fixed strip 13, probe
Slot 14, drawing head 15, signal wire hole body 16, fastening female thread 17.It is connected by fixing bolt integral between each fission component, is
Ultrasonic probe provides mounting platform.
As shown in Fig. 2, being laid with mounting hole of the signal wire by device, 3 mounting holes on the fixed end face of support leather cup of cabin
It uniformly arranges in 120 ° of angles, the bolt through hole of 9 fixed cabin support leather cups, each mounting hole is laid between mounting hole
Between 3 through holes uniformly arrange in 30 ° of angles.
As shown in figure 3, single probe array fixed strip both ends are respectively provided with 2 fixing bolt through holes, for fixed strip with
The connection of cabin support frame, middle part are equipped with 8 probe grooves, place 8 probes altogether, each probe grooves two sides are respectively provided with 2 spiral shells
Keyhole, the fixed probe of cooperation probe positioner.
When the present invention implements on-line checking work in pipeline, cabin supports leather cup to provide whole branch for linear transducer array cabin
Support, while preceding action edge being provided under differential pressure action before and after cabin, conveyor screw formula fixed strip provides installation site for linear transducer array,
Sectional type design is not only convenient for the replacement maintenance of detector elements, and is conducive to the accurate positioning installation of probe, probe data
Line is connect by device with adjacent cabin circuit board via signal wire, is believed for the instruction that detecting and controlling system is sent with the detection returned
Number transmission channel is provided, the cabin drawing head positioned at front is connected by the components such as universal joint with other cabins.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the description in above embodiments and description only illustrates original of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (7)
1. a kind of pulse reflection piezoelectric supersonic online internal detector linear transducer array cabin characterized by comprising
Cabin support frame, the cabin support frame are used to provide structural support for the global facility in linear transducer array cabin；
Cabin supports leather cup, and the cabin support leather cup is linear transducer array cabin when being placed in on-line checking in pipeline for internal detector
Support is provided；
Linear transducer array fixed strip, the linear transducer array fixed strip make probe by specific for providing the fixation position of linear transducer array
Mode is arranged；
Cabin drawing head, the cabin drawing head is used for the connection in linear transducer array cabin and other cabins, while being used for the cabin
The fixation of the leather cup；
For signal wire by device, the signal wire is provided by data line of the device between probe and adjacent cabin circuit board passes through sky
Between；
Leather cup fixed plate, the leather cup fixed plate is for consolidating between cabin support leather cup and the cabin support frame
It is fixed；
It is the cabin support frame, cabin support leather cup, the linear transducer array fixed strip, the cabin drawing head, described
Signal wire is fastened by bolts part and is sequentially connected by device, the leather cup fixed plate, constitutes linear transducer array cabin.
2. the online internal detector linear transducer array of pulse reflection piezoelectric supersonic as described in claim 1 cabin, wherein the cabin
Support frame includes central support posts, the first support ring of linear transducer array fixed strip, the second support ring of linear transducer array fixed strip, cabin
Support the fixed end face of leather cup；The central support posts are cylindrical body, and center axis thereof is coaxial with the central axis of other three parts；
First support ring of linear transducer array fixed strip is located at the central support posts right side, and outer side ring surface is solid equipped with linear transducer array
Determine the locating groove and fixed bolt hole of item, the bolt through hole of fixed cabin support leather cup is equipped in the middle part of end face；The probe
The second support ring of array fixed strip is located on the left of the central support posts, and outer side ring surface is equipped with the positioning of linear transducer array fixed strip
Card slot and fixed bolt hole, end face middle part are equipped with mounting hole of the signal wire by device；The fixed end face position of cabin support leather cup
The spiral shell that signal wire supports leather cup by the mounting hole of device and fixed cabin is equipped in the central support posts left side, in the middle part of end face
Bolt through hole.
3. the online internal detector linear transducer array of pulse reflection piezoelectric supersonic as described in claim 1 cabin, wherein the cabin
Supporting leather cup includes the first support leather cup, the second support leather cup；The first support leather cup is located at linear transducer array fixed strip first
Support ring right end face, end face middle part are equipped with the bolt through hole of fixed cabin support leather cup；The second support leather cup is located at
Cabin supports leather cup fixing end left side of face, and signal wire is equipped in the middle part of end face by the mounting hole of device and fixed cabin and supports leather cup
Bolt through hole.
4. the online internal detector linear transducer array of pulse reflection piezoelectric supersonic as described in claim 1 cabin, wherein the probe
Array fixed strip includes several identical structures and fixed strip independent of each other, probe positioner, positioning bolt；In the fixed strip
Portion is equipped with probe grooves, and two sides are equipped with bolt hole, is installed on the first support ring of linear transducer array fixed strip and linear transducer array fixed strip the
On the outer side ring surface of two support rings, fixed after being placed in locating groove by the positioning bolt；The probe positioner, which is located at, to be visited
Head slot two sides, for fixed probe；The positioning bolt is for fixing the fixed strip and the probe positioner.
5. the online internal detector linear transducer array of pulse reflection piezoelectric supersonic as described in claim 1 cabin, wherein the cabin
Drawing head includes drawing head, fixing bolt；It is cylindrical end face on the right side of the drawing head, is equipped with signal wire in the middle part of end face and passes through device
Mounting hole and fixed cabin support leather cup bolt through hole, middle part is curved surface cone, and left side is connector, for universal
The fixation of section；The fixing bolt sequentially pass through the fixed end face of cabin support leather cup, the second support leather cup, the drawing head spiral shell
Bolt through hole, the fixation for the second support leather cup.
6. the online internal detector linear transducer array of pulse reflection piezoelectric supersonic as described in claim 1 cabin, wherein the signal
Line includes signal wire hole body, fastening female thread by device；The signal wire hole body is that bottom outer surface is equipped with chuck, outer surface of cupular part
If threaded cylindrical shell, the installation of the second support ring of linear transducer array fixed strip, the second support leather cup and drawing head is sequentially passed through
Hole, the data line between probe and adjacent cabin circuit board, which provides, passes through space；The fastening female thread is that inner surface is equipped with spiral shell
The cylindrical shell of line, for fixing the signal wire hole body.
7. the online internal detector linear transducer array of pulse reflection piezoelectric supersonic as described in claim 1 cabin, wherein the leather cup
Fixed plate is cylindrical disc, is equipped with the bolt through hole for fixing the first support leather cup in the middle part of end face, fixing bolt sequentially passes through
The bolt through hole of the first support ring of linear transducer array fixed strip, the first support leather cup and the leather cup fixed plate, is realized to first
Support the fixation of leather cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910068575.XA CN109781859A (en) | 2019-01-24 | 2019-01-24 | A kind of pulse reflection piezoelectric supersonic online internal detector linear transducer array cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910068575.XA CN109781859A (en) | 2019-01-24 | 2019-01-24 | A kind of pulse reflection piezoelectric supersonic online internal detector linear transducer array cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109781859A true CN109781859A (en) | 2019-05-21 |
Family
ID=66502235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910068575.XA Pending CN109781859A (en) | 2019-01-24 | 2019-01-24 | A kind of pulse reflection piezoelectric supersonic online internal detector linear transducer array cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109781859A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101002690A (en) * | 2006-01-19 | 2007-07-25 | 株式会社东芝 | Supersonic wave checking device |
| WO2008010712A1 (en) * | 2006-07-17 | 2008-01-24 | Röntgen Technische Dienst B.V. | System for measuring on a wall of a pipeline with phased array |
| CN101199434A (en) * | 2006-12-11 | 2008-06-18 | 通用电气公司 | Modular sensor assembly and methods of fabricating the same |
| CN101680592A (en) * | 2007-05-21 | 2010-03-24 | 阿尔斯托姆科技有限公司 | The boiler tube inspection probe and the operating method thereof of mechanism during band is fixed |
| US20100288049A1 (en) * | 2008-08-08 | 2010-11-18 | Hoyt Philip M | Pseudorandom binary sequence apparatus and method for in-line inspection tool |
| CN203560729U (en) * | 2013-10-31 | 2014-04-23 | 济南大学 | Petroleum pipeline detection device |
| CN204630987U (en) * | 2015-03-19 | 2015-09-09 | 暨南大学 | For the ultrasonic probe array stationary installation that pipe fitting detects |
| CN105806936A (en) * | 2014-12-29 | 2016-07-27 | 中石化胜利石油工程有限公司钻井工艺研究院 | Pipeline defect detection device and data analysis method |
| CN106248793A (en) * | 2016-08-31 | 2016-12-21 | 北京主导时代科技有限公司 | A kind of phased-array ultrasonic hollow axle detection device and detection method |
| CN106269730A (en) * | 2016-10-31 | 2017-01-04 | 西南石油大学 | A kind of from power-assisted ultrasonic scale removal wiper |
| CN206020334U (en) * | 2016-09-23 | 2017-03-15 | 安雁军 | A kind of oil and gas pipeline verifying attachment |
| CN206918537U (en) * | 2017-05-31 | 2018-01-23 | 清远初曲智能科技有限公司 | A kind of wheeled magnetic self-adapting pipe for power engineering detects traction robot |
| CN208091973U (en) * | 2018-03-26 | 2018-11-13 | 北京卓能中电科技有限公司 | A kind of sensor array of supersonic guide-wave torsion mode suitable for pipe detection |
| CN109226128A (en) * | 2018-10-29 | 2019-01-18 | 西南石油大学 | A kind of vane type pipe cleaner of intelligent speed-control |
| CN208795657U (en) * | 2018-09-21 | 2019-04-26 | 深圳市长隆科技有限公司 | Reflective probe and fluid on-line detector |
-
2019
- 2019-01-24 CN CN201910068575.XA patent/CN109781859A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101002690A (en) * | 2006-01-19 | 2007-07-25 | 株式会社东芝 | Supersonic wave checking device |
| WO2008010712A1 (en) * | 2006-07-17 | 2008-01-24 | Röntgen Technische Dienst B.V. | System for measuring on a wall of a pipeline with phased array |
| CN101199434A (en) * | 2006-12-11 | 2008-06-18 | 通用电气公司 | Modular sensor assembly and methods of fabricating the same |
| CN101680592A (en) * | 2007-05-21 | 2010-03-24 | 阿尔斯托姆科技有限公司 | The boiler tube inspection probe and the operating method thereof of mechanism during band is fixed |
| US20100288049A1 (en) * | 2008-08-08 | 2010-11-18 | Hoyt Philip M | Pseudorandom binary sequence apparatus and method for in-line inspection tool |
| CN203560729U (en) * | 2013-10-31 | 2014-04-23 | 济南大学 | Petroleum pipeline detection device |
| CN105806936A (en) * | 2014-12-29 | 2016-07-27 | 中石化胜利石油工程有限公司钻井工艺研究院 | Pipeline defect detection device and data analysis method |
| CN204630987U (en) * | 2015-03-19 | 2015-09-09 | 暨南大学 | For the ultrasonic probe array stationary installation that pipe fitting detects |
| CN106248793A (en) * | 2016-08-31 | 2016-12-21 | 北京主导时代科技有限公司 | A kind of phased-array ultrasonic hollow axle detection device and detection method |
| CN206020334U (en) * | 2016-09-23 | 2017-03-15 | 安雁军 | A kind of oil and gas pipeline verifying attachment |
| CN106269730A (en) * | 2016-10-31 | 2017-01-04 | 西南石油大学 | A kind of from power-assisted ultrasonic scale removal wiper |
| CN206918537U (en) * | 2017-05-31 | 2018-01-23 | 清远初曲智能科技有限公司 | A kind of wheeled magnetic self-adapting pipe for power engineering detects traction robot |
| CN208091973U (en) * | 2018-03-26 | 2018-11-13 | 北京卓能中电科技有限公司 | A kind of sensor array of supersonic guide-wave torsion mode suitable for pipe detection |
| CN208795657U (en) * | 2018-09-21 | 2019-04-26 | 深圳市长隆科技有限公司 | Reflective probe and fluid on-line detector |
| CN109226128A (en) * | 2018-10-29 | 2019-01-18 | 西南石油大学 | A kind of vane type pipe cleaner of intelligent speed-control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105043312B (en) | The spherical densely covered formula Probe Ultrasonic Searching measuring thickness device of detection in a kind of pressure pipeline | |
| CN101169225B (en) | Long conveyance pipe defect positioning method and positioning system | |
| GB2620879A (en) | Pipeline nondestructive testing device | |
| CN106404409A (en) | Probe assembly suitable for strong-shearing unsteady flow test of aeroengine | |
| CN105403148A (en) | Measurement apparatus of center position accuracy of all journals of crank shaft, and measurement and calibration methods thereof | |
| CN111157624B (en) | Method for diagnosing damage state of inner bore of pipeline | |
| CN102537669A (en) | Method and system for detecting pipeline defect based on ultrasonic guided wave focusing | |
| CN105910742A (en) | Ultrasonic residual stress test surface positioning coupling device | |
| CN101769899B (en) | Track tracing device | |
| RU2697007C1 (en) | Device for in-pipe diagnostics of pipeline technical state | |
| CN109781859A (en) | A kind of pulse reflection piezoelectric supersonic online internal detector linear transducer array cabin | |
| CN202152923U (en) | Pipeline defect detecting system based on ultrasonic guided wave focusing | |
| CN103575251B (en) | A kind of rotary ultrasonic ware defect-detecting equipment center deviation detecting method | |
| CN109856240B (en) | Multifunctional high-precision ultrasonic scanning imaging device | |
| CN209279918U (en) | A kind of detection device measuring circular pipe concentricity | |
| CN108845031A (en) | A kind of defect detection ultrasonic characteristic signal acquisition device | |
| CN201876441U (en) | Universal joint tray of ultrasonic probe for nondestructive flaw detection | |
| CN108362718A (en) | Conduit ring-shaped weld seam detection non-destructive detecting device | |
| CN108827214A (en) | A kind of detection device and method of super large type bearing ring outer diameter | |
| CN1356545A (en) | System based on array-type flexible electric eddy sensor for monitoring gap between spherical layers | |
| CN106885849A (en) | A kind of multi-point sampler method for removing of pipe ultrasonic Guided waves spurious echo | |
| CN209802440U (en) | Adjustable fixing device for installing externally-clamped sensor | |
| CN104751916A (en) | Ultrasonic-vortex composite probe for detection of small-pipe diameter inner wall | |
| CN112414274A (en) | Device and method for detecting appearance of catheter | |
| CN209167222U (en) | A kind of tooling suitable for carrying out ultrasonic flaw detection to plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |