CN106500939A - A kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer and the method for realizing supporting - Google Patents
A kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer and the method for realizing supporting Download PDFInfo
- Publication number
- CN106500939A CN106500939A CN201610929860.2A CN201610929860A CN106500939A CN 106500939 A CN106500939 A CN 106500939A CN 201610929860 A CN201610929860 A CN 201610929860A CN 106500939 A CN106500939 A CN 106500939A
- Authority
- CN
- China
- Prior art keywords
- connecting bolt
- pipe
- egative film
- supporting construction
- heat transfer
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
-
- 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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention discloses a kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer and implementation method, pipe U-shaped section of equivalent stiffness supporting construction of the heat transfer includes elastic support sheet, connecting bolt and fixing nut, the elastic support sheet is fixed on the end face of connecting bolt wherein one end, fixing nut is socketed on connecting bolt, the elastic support sheet includes egative film and arc-like sheet, the egative film is affixed with the end face of connecting bolt, one end of arc-like sheet is fixed on wherein one end of egative film, and the free end of arc-like sheet extends to the other end of egative film.The present invention can provide the integral rigidity of heat-transfer pipe, and not disturb External airflow field, while the support has simple structure, easy to process, disturbance flow field is reduced to greatest extent, be suitable for flexibly can install at an arbitrary position, range in stiffness adjustable range width, adjust easy the features such as.
Description
Technical field
The present invention relates to steam generator field, and in particular to a kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer and reality
Existing method for supporting.
Background technology
The heat-transfer pipe of steam generator under the two phase flow effect of secondary side is susceptible to vibrate, and bundle vibration can cause
A series of mechanics problem of heat-transfer pipes.The border that the steam generator heat-transfer pipe beam of nuclear industry also has primary Ioops water acts on, pipe
There is breakage in Shu Yidan, can leak into secondary circuit with active primary Ioops water, cause extremely serious leakage accident.Therefore
The mechanical integrity of assessment steam generator heat-transfer pipe beam is an important step for designing steam generator.Research and assessment are steamed
The Flow vibration problem of one of the dynamics problem of vapour generator heat-transfer pipe is often carried out by means of the mode of experimental study.Steaming
In the Experiments of Machanics of vapour generator tube bank, bundle vibration characteristic is understood, the analysis of the dynamic behavior to restraining is particularly important.
But a complete steam generator frequently includes thousand of heat-transfer pipes, completely these tube banks are tested often not existing
Real.General way is to carry out the model experiment of local.Typically take several rows in the middle of tube bank to be tested as test model.
The heat-transfer pipe of steam generator is made up of straight length and U-shaped bend pipe.Straight length due to have different sections gripper shoe about
The general rigidity of beam is larger.And in the pipe U-shaped bend loss that conducts heat, being located in bend pipe, out-of-plane rigidity is weaker, its intrinsic frequency is relatively low.
In order to prevent the generation vibration by a relatively large margin in direction outside face of U-shaped bend pipe, vibrationproof bar is inserted using between the tube banks of different rows
Mode prevent restrain between gouging abrasion.The mode in the gap between the insertion tube bank of vibrationproof bar, is not connected with tube bank, because
And the vibration in direction outside the face of U-shaped bend pipe can only be constrained.Facts have proved that the design of vibrationproof bar mode is greatly reduced heat-transfer pipe
Flow vibration problem.Due to only having taken middle several combs in partial model experiment, due to the minimizing that restrains, local is result in
Stiffness reduction of the heat-transfer pipe of model on the inside and outside direction in face, thus its dynamics can not represent real heat-transfer pipe
Natural vibration characteristic.
Content of the invention
It is an object of the invention to provide a kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer and implementation method, solve mesh
Front when the mechanical test of bundle of steam generator is carried out, due to bundle of steam generator a lot, often only with tube bank in the middle of
Several rows tested as test model, due to the minimizing that restrains, cause the heat-transfer pipe of partial model on the inside and outside direction in face
Rigidity reduce, thus its dynamics can not represent the natural vibration characteristic of real heat-transfer pipe, affect the standard of test
The problem of true property.
The present invention for achieving the above object, employs the following technical solutions realization：
A kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer, including elastic support sheet, connecting bolt and fixing nut, institute
State elastic support sheet to be fixed on the end face of connecting bolt wherein one end, fixing nut is socketed on connecting bolt.Pin of the present invention
Replacement integral rigidity has been invented the characteristics of weaker to the rigidity of the U-shaped bend loss of the partial model in heat-transfer pipe dynamic characteristic test
Elastic supporting member for supporting optical member.The connecting bolt of this programme is fixed on the chamber wall of steam generator by screwed hole, and connecting bolt is solid
Determine in one end insertion container of elastic support sheet and the end flushed with container inner wall, and elastic support sheet is withstood on vibrationproof bar,
By the nut that is tightened, whole supporting construction is fixed on the chamber wall of steam generator, and provide elastic support sheet
With the elastic anchorage force of overall heating surface bank stiffnes s equivalent, the rigidity of the pipe U-shaped bend loss that solves the problems, such as to conduct heat is weaker, is reasonable
The overall structure dynamic characteristic of simulation heat-transfer pipe provides condition.Connecting bolt was both played a supporting role, and also functions to sealing and makees
With preventing the fluid inside container from leaking.Between elastic support sheet and vibrationproof bar is just to contact, not pre- to connecting bolt
Clamp force, it is easy to loose or dislocation in vibration test, does not reach the effect for providing that rigidity is supported, and fixing nut is outside container, right
Connecting bolt one pretightning force of applying is made which be closely connected with chamber wall and can avoid connecting bolt because vibration causes to loosen.
Preferably, the elastic support sheet includes the end face of egative film and arc-like sheet, the egative film and connecting bolt
It is affixed, one end of arc-like sheet is fixed on wherein one end of egative film, and the free end of arc-like sheet extends to the other end of egative film.
Preferably, the arc-like sheet includes curved sections and planar section, and one end of curved sections is neat with one end of egative film
Flat fixation, the other end of curved sections are fixed with one end of planar section, and the other end of planar section is free end.
Preferably, the cross sectional shape of the curved sections is circular arc, and the center of circle of circle that the circular arc is located is located at bottom
In the plane that piece is located.
Preferably, the fixing end of the planar section arrives egative film to the distance of egative film more than the free end of planar section
Distance.
Preferably, the planar section is linear contact lay with egative film.
Preferably, the free end of the planar section flips up, and makes the cross sectional shape of planar section L-shaped.
A kind of method that realizes supporting using pipe U-shaped section of equivalent stiffness supporting construction of heat transfer, comprises the following steps：
A one end of connecting bolt is screwed into corresponding screw on the chamber wall of steam generator by (), and make elastic support sheet
Withstand on vibrationproof bar；
B () installs connecting bolt after, it is ensured that the curved surface of curved sections is in face of fluid flow direction；
C () screws in fixing nut from the other end of connecting bolt, keep connecting bolt not rotate, by rotary fixing screw
Mother, fixes whole supporting construction locked on the chamber wall of steam generator, and makes elastic support sheet hold out against vibrationproof piece.
During by connecting bolt on the chamber wall of steam generator, one end that connecting bolt is contacted with elastic support sheet
Flush with container inner wall, it is impossible to which it is higher than chamber wall to protrude, such connecting bolt cannot disturb the flow field in container.
The present invention compared with prior art, with advantages below and beneficial effect：The present invention can provide the whole of heat-transfer pipe
Body rigidity, and do not disturb External airflow field, while the support has simple structure, easy to process, reduces disturbance flow field to greatest extent,
Be suitable for flexibly can install at an arbitrary position, range in stiffness adjustable range width, adjust easy the features such as.
Description of the drawings
Fig. 1 is the stereogram of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the mounting structure schematic diagram of the present invention.
Fig. 4 is the location arrangements figure of elastic supporting member for supporting optical member in certain Steam Generators in NPP heating surface bank Flow vibration test.
In accompanying drawing, reference is corresponding entitled：1st, elastic support sheet, 2, connecting bolt, 3, fixing nut, 4, egative film,
5th, arc-like sheet, 6, curved sections, 7, planar section, 8, chamber wall, 9, vibrationproof bar.
Specific embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention not limited to this.
Embodiment 1：
As shown in Figure 1, Figure 2, Figure 3 shows, the one kind described in the present embodiment is conducted heat pipe U-shaped section of equivalent stiffness supporting construction, including
Elastic support sheet 1, connecting bolt 2 and fixing nut 3, the elastic support sheet 1 are fixed on the end face of the wherein one end of connecting bolt 2
On, fixing nut 3 is socketed on connecting bolt 2.The supporting construction is simple, easy to process, and being suitable for flexibly can be at an arbitrary position
Install.
Embodiment 2：
The present embodiment optimizes to elastic support sheet 1 on the basis of the 1 of embodiment, i.e., elastic support sheet 1 includes bottom
Piece 4 and arc-like sheet 5, egative film 4 are affixed with the end face of connecting bolt 2, and one end of arc-like sheet 5 is fixed on wherein one end of egative film 4, arc
The free end of shape piece 5 extends to the other end of egative film 4.
Wherein, as shown in Figure 1 and Figure 2, arc-like sheet 5 includes curved sections 6 and planar section 7, one end of curved sections 6 and egative film 4
One end flushes fixation, and one end of the other end of curved sections 7 and planar section 7 is fixed, and the other end of planar section 7 is free end.Curved surface
The cross sectional shape of section 6 is circular arc, and the center of circle of circle that the circular arc is located is in the plane that egative film 4 is located.
The fixing end of planar section 7 is more than the distance of the free end of planar section 7 to egative film 4 to the distance of egative film 4.
The free end of the planar section 7 flips up, and makes the cross sectional shape of planar section 7 L-shaped, the bending place and bottom of L-shaped
4 Linear smoother of piece is contacted.Due to being a strong point of resilient support at this, extra rigidity can be provided for entirely supporting, because
This needs reduces friction, needs smooth linear contact, thus designs L-shaped.Falling in designing l-shaped equivalent to structure processing
Angle, i.e., to planar section 7 and the contact position chamfering of egative film, can produce very big frictional force if not chamfering and provide to whole support
Extra rigidity.
As shown in figure 3, D represents the distance of vibrationproof bar and container in figure, and typically only several mm wides, the space of installation is compared
Narrow and small, therefore designed elastic construction needs little.Above-mentioned requirements are met using the elastic support sheet of the structure.While heat-transfer pipe
U-shaped section of support stiffness variation scope than larger, the range in stiffness of such as this test is from 4 × 106～21 × 106N/m,
It is difficult to meet this requirement using general spiral spring, and using spirally waiting resilient support of others blunt forms
Piece, installed in position as shown in Figure 3, fluid flows through this irregular structure and often takes off in structural member rear formation whirlpool
Fall, cause to give heat-transfer pipe one additional excitation, affect the data of test, and adopt the elastic support sheet in the present embodiment, its
Not only adjustable scope is wide for rigidity, and without interference with External airflow field.The stiffness tuning of elastic support sheet can pass through adjust а, β, δ,
The parameters such as R, L, H.Specifically, the computing formula of stiffness coefficient is
Wherein, а represents the corresponding radian of curved sections；β represents the angle between planar section and egative film；δ represents the thickness of egative film
Degree；R represents the diameter length of curved sections；L represents the length of egative film；H represents the width of resilient support；Springforms of the E for material
Amount.
The example to stiffness tuning under some different parameters is given below, which is the result of calculation of stainless steel material, is calculated
The rigidity for obtaining afterwards is the rigidity of resilient support.
| α° | β° | δ(m) | L(m) | H(m) | R(m) | K(N/m) |
| 135 | 45 | 0.001 | 0.015 | 0.01 | 0.005 | 3.16E+06 |
| 116 | 26 | 0.002 | 0.018 | 0.0045 | 0.005 | 7.76E+06 |
| 116 | 26 | 0.002 | 0.018 | 0.005 | 0.005 | 8.63E+06 |
| 120 | 30 | 0.003 | 0.02 | 0.005 | 0.008 | 1.79E+07 |
As shown in figure 4,9 in the test of certain Steam Generators in NPP heating surface bank Flow vibration marked in figure
Pore vibrationproof bar location arrangements the type elastic supporting member for supporting optical member, range in stiffness are 3 × 106N/m～25 × 106N/m, the pipe of measurement
Beam entirety intrinsic frequency is in 16Hz～80Hz ranges.
Embodiment 3
As shown in figure 3, a kind of method that realizes supporting using pipe U-shaped section of equivalent stiffness supporting construction of heat transfer, including following
Step：
A one end of connecting bolt is screwed into corresponding screw on the chamber wall of steam generator by (), and make elastic support sheet
Withstand on vibrationproof bar 9；
B () installs connecting bolt after, it is ensured that the curved surface of curved sections is in face of fluid flow direction；
C () screws in fixing nut from the other end of connecting bolt, keep connecting bolt not rotate, by rotary fixing screw
Mother, fixes whole supporting construction locked on the chamber wall of steam generator, and makes elastic support sheet hold out against vibrationproof piece.
In step a, during by connecting bolt on the chamber wall of steam generator, connecting bolt and elastic support sheet
One end of contact is flushed with container inner wall.
The above, is only presently preferred embodiments of the present invention, not does any pro forma restriction to the present invention, every according to
According to the present invention technical spirit above example is made any simple modification, equivalent variations, each fall within the present invention protection
Within the scope of.
Claims (9)
1. pipe U-shaped section of equivalent stiffness supporting construction of a kind of heat transfer, it is characterised in that：Including elastic support sheet（1）, connecting bolt
（2）And fixing nut（3）, the elastic support sheet（1）It is fixed on connecting bolt（2）On the end face of one end, fixing nut（3）Set
It is connected on connecting bolt（2）On.
2. pipe U-shaped section of equivalent stiffness supporting construction of a kind of heat transfer according to claim 1, it is characterised in that：The elasticity
Support chip（1）Including egative film（4）And arc-like sheet（5）, the egative film（4）With connecting bolt（2）End face be affixed, arc-like sheet（5）
One end be fixed on egative film（4）Wherein one end, arc-like sheet（5）Free end to egative film（4）The other end extend.
3. pipe U-shaped section of equivalent stiffness supporting construction of a kind of heat transfer according to claim 2, it is characterised in that：The arc
Piece（5）Including curved sections（6）And planar section（7）, curved sections（6）One end and egative film（4）One end flush fixation, curved sections
（7）The other end and planar section（7）One end fix, planar section（7）The other end be free end.
4. pipe U-shaped section of equivalent stiffness supporting construction of a kind of heat transfer according to claim 3, it is characterised in that：The curved surface
Section（6）Cross sectional shape be circular arc, and the center of circle of circle that the circular arc is located is located at egative film（4）In the plane at place.
5. the one kind according to claim 3 or 4 is conducted heat pipe U-shaped section of equivalent stiffness supporting construction, it is characterised in that：Described flat
Face section（7）Fixing end to egative film（4）Distance be more than planar section（7）Free end to egative film（4）Distance.
6. a kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer according to claim 5 and implementation method, its feature exist
In：The planar section（7）With egative film（4）For linear contact lay.
7. pipe U-shaped section of equivalent stiffness supporting construction of a kind of heat transfer according to claim 5, it is characterised in that：The plane
Section（7）Free end flip up, make planar section（7）Cross sectional shape L-shaped.
8. a kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer using described in any one of claim 1 ~ 7 realizes the side for supporting
Method, it is characterised in that：Comprise the following steps：
（a）By connecting bolt（2）One end be screwed into corresponding screw on the chamber wall of steam generator, and make elastic support sheet
（1）Withstand on vibrationproof bar（9）On；
（b）Install connecting bolt（2）Afterwards, it is ensured that curved sections（6）Curved surface in face of fluid flow direction；
（c）From connecting bolt（2）The other end screw in fixing nut（3）, keep connecting bolt（2）Do not rotate, solid by rotation
Determine nut（3）, fix whole supporting construction locked on the chamber wall of steam generator, and make elastic support sheet（1）Will be anti-
The piece that shakes holds out against.
9. a kind of pipe U-shaped section of equivalent stiffness supporting construction of employing heat transfer according to claim 8 realizes the method for supporting, its
It is characterised by：By connecting bolt（2）When on the chamber wall of steam generator, connecting bolt（2）With elastic support sheet（1）
One end of contact is flushed with container inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610929860.2A CN106500939B (en) | 2016-10-31 | 2016-10-31 | A method of pipe U-shaped section of equivalent stiffness support construction of heat transfer and realization support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610929860.2A CN106500939B (en) | 2016-10-31 | 2016-10-31 | A method of pipe U-shaped section of equivalent stiffness support construction of heat transfer and realization support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106500939A true CN106500939A (en) | 2017-03-15 |
| CN106500939B CN106500939B (en) | 2018-09-11 |
Family
ID=58319058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610929860.2A Active CN106500939B (en) | 2016-10-31 | 2016-10-31 | A method of pipe U-shaped section of equivalent stiffness support construction of heat transfer and realization support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106500939B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150142A1 (en) * | 1981-12-18 | 1983-07-07 | Türk & Hillinger GmbH & Co, 7200 Tuttlingen | Electric panel heating element |
| CN85108586A (en) * | 1984-12-05 | 1986-06-10 | 三菱重工业株式会社 | The vibration proof bracing or strutting arrangement of heat transfering tube of heat exchanger |
| CN1102500A (en) * | 1993-08-20 | 1995-05-10 | 法玛通公司 | Heat exchanger including means for holding antivibration bars interposed between the tubes of the bundle of the exchanger |
| CN101061363A (en) * | 2004-11-22 | 2007-10-24 | 埃克森美孚研究工程公司 | Anti-vibration tube support |
| CN204659177U (en) * | 2015-05-30 | 2015-09-23 | 胡保国 | A kind of thermal transfer printing printer |
| CN105917166A (en) * | 2013-12-26 | 2016-08-31 | 纽斯高动力有限责任公司 | Steam generator tube support |
-
2016
- 2016-10-31 CN CN201610929860.2A patent/CN106500939B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150142A1 (en) * | 1981-12-18 | 1983-07-07 | Türk & Hillinger GmbH & Co, 7200 Tuttlingen | Electric panel heating element |
| CN85108586A (en) * | 1984-12-05 | 1986-06-10 | 三菱重工业株式会社 | The vibration proof bracing or strutting arrangement of heat transfering tube of heat exchanger |
| CN1102500A (en) * | 1993-08-20 | 1995-05-10 | 法玛通公司 | Heat exchanger including means for holding antivibration bars interposed between the tubes of the bundle of the exchanger |
| CN101061363A (en) * | 2004-11-22 | 2007-10-24 | 埃克森美孚研究工程公司 | Anti-vibration tube support |
| CN105917166A (en) * | 2013-12-26 | 2016-08-31 | 纽斯高动力有限责任公司 | Steam generator tube support |
| CN204659177U (en) * | 2015-05-30 | 2015-09-23 | 胡保国 | A kind of thermal transfer printing printer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106500939B (en) | 2018-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Khalifa et al. | Modeling of the phase lag causing fluidelastic instability in a parallel triangular tube array | |
| Chen et al. | Fluid excitation forces acting on a square tube array | |
| Hassan et al. | Pitch and mass ratio effects on transverse and streamwise fluidelastic instability in parallel triangular tube arrays | |
| Weaver et al. | Strouhal numbers for heat exchanger tube arrays in cross flow | |
| Mohany et al. | Experimental and numerical characterization of flow-induced vibration of multispan u-tubes | |
| CN106500939A (en) | A kind of pipe U-shaped section of equivalent stiffness supporting construction of heat transfer and the method for realizing supporting | |
| Arshad et al. | Effect of fin geometry on flow-induced vibration response of a finned tube in a tube bundle | |
| Guo et al. | Transient convective heat transfer of steam–water two-phase flow in a helical tube under pressure drop type oscillations | |
| Quan et al. | Experimental study on cross flow induced vibration response of four-span straight tube bundle with TSP or AVB supports | |
| Hassan et al. | The effects of tube array geometry on fluidelastic instability in heat exchanger tube arrays in cross flow | |
| Kinaci et al. | Vortex-induced vibrations of a single-degree-of-freedom circular cylinder in the vicinity of the free surface | |
| Paidoussis | Vibration of cylindrical structures induced by axial flow | |
| Khalifa et al. | An experimental study of flow-induced vibration and the associated flow perturbations in a parallel triangular tube array | |
| Wang et al. | Fluidelastic instability in normal and parallel triangular arrays of finned tubes | |
| Gonçalves et al. | Force measurements of the flow around arrays of three and four columns with different geometry sections, spacing ratios, and incidence angles | |
| Nakamura et al. | Investigation of in-flow fluidelastic instability of square tube arrays subjected to air cross flow | |
| Mahon et al. | Estimation of the time delay associated with damping controlled fluidelastic instability in a normal triangular tube array | |
| Aydin et al. | Critical effects of a spanwise surface wire on flow past a circular cylinder and the significance of the wire size and Reynolds number | |
| Blevins | Nonproprietary flow-induced vibration analysis of San Onofre nuclear generating station replacement steam generators to ASME code section III appendix N | |
| Kanizawa et al. | State-of-the-art review on flow patterns, superficial void fraction and flow-induced vibration during two-phase flows across tube bundles | |
| Hamakawa et al. | Acoustic resonance and vortex shedding from tube banks of boiler plant | |
| Liu et al. | The fluid elastic instability of concentric arrays of tube bundles subjected on cross flow | |
| Kim et al. | Design and validation of a fuel assembly simulator for PGSFR reactor flow distribution test facility | |
| Feenstra et al. | Investigations of In-Plane Fluidelastic Instability in a Multispan U-Bend Tube Array—Part II: Tests in Two-Phase Flow | |
| Nizam et al. | Experimental Investigation of Flow-Induced Vibrations of the Finned Tubes in a Parallel Triangular Tube Array |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |