CN111780944B - Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology - Google Patents
Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology Download PDFInfo
- Publication number
- CN111780944B CN111780944B CN202010793453.XA CN202010793453A CN111780944B CN 111780944 B CN111780944 B CN 111780944B CN 202010793453 A CN202010793453 A CN 202010793453A CN 111780944 B CN111780944 B CN 111780944B
- Authority
- CN
- China
- Prior art keywords
- electron beam
- wind tunnel
- low
- flow field
- calibration device
- 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.)
- Active
Links
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 52
- 238000005516 engineering process Methods 0.000 title claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 239000005304 optical glass Substances 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 9
- 238000005485 electric heating Methods 0.000 claims abstract description 7
- 239000010980 sapphire Substances 0.000 claims description 5
- 229910052594 sapphire Inorganic materials 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims 1
- 238000001228 spectrum Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000009529 body temperature measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000011088 calibration curve Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a low-density wind tunnel flow field vibration temperature calibration device based on an electron beam fluorescence technology. The calibrating device comprises an electron gun arranged in a residence chamber on the test section, a Faraday cup arranged in a residence chamber below the test section, wherein the Faraday cup receives electron beams emitted by the electron gun, and the electron beams are positioned between a spray pipe and a diffuser and perpendicular to the axis of the spray pipe and pass through a central cavity of a temperature source from top to bottom; the spectrometer and the CCD camera are arranged outside an observation window of the test section, and a convex lens is also arranged between the spectrometer and the observation window; the CCD camera is connected with the computer through a network cable. The temperature source is a circular tube, the circular tube is sequentially provided with a coaxial shell, an insulating layer and an electric heating tube from outside to inside, thermocouples which are distributed in parallel from top to bottom along the vertical direction are arranged at the 0-degree side wall position in the middle section of the circular tube, corresponding optical glass is arranged at the 180-degree side wall position, and a cavity of the middle section of the circular tube is a measuring area. The calibration device is simple and reliable in structure and accurate in calibration.
Description
Technical Field
The invention belongs to the technical field of hypersonic low-density wind tunnel tests, and particularly relates to a low-density wind tunnel flow field vibration temperature calibration device based on an electron beam fluorescence technology.
Background
In the hypersonic low-density wind tunnel test, as nitrogen in air is a diatomic molecule, thermodynamic unbalance effect can occur in thin flow, and the vibration temperature and the rotation temperature of the nitrogen gas molecule are inconsistent, so that the vibration temperature and the rotation temperature of the nitrogen gas molecule need to be measured for the thermodynamic unbalance effect research. Currently, electron beam fluorescence technology can be used to measure the vibration temperature and rotation temperature of the gas in the flow field, wherein the rotation temperature measurement is already a mature technology, and the rotation temperature can be calculated by measuring electron beam fluorescence rotation spectrum of nitrogen molecules. But vibration temperature measurements are still under investigation. At present, the vibration temperature is calculated mainly through a vibration band, but the accurate spectral constants of various gas molecules and an ideal light path which is not affected by any influence are required, and the realization difficulty is great.
According to the low-density wind tunnel flow field vibration temperature measurement method based on the electron beam fluorescence technology, a vibration temperature measurement system of the electron beam fluorescence technology needs to be calibrated on a low-density wind tunnel test site, and currently, development of a low-density wind tunnel flow field vibration temperature calibration device based on the electron beam fluorescence technology is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a low-density wind tunnel flow field vibration temperature calibration device based on an electron beam fluorescence technology.
The invention relates to a low-density wind tunnel flow field vibration temperature calibration device based on an electron beam fluorescence technology, which is characterized by comprising an electron gun arranged in a residence chamber on a test section of a hypersonic low-density wind tunnel, a Faraday cup arranged in a residence chamber below the test section of the hypersonic low-density wind tunnel, wherein the Faraday cup is used for receiving electron beams emitted by the electron gun, and the electron beams are positioned between a spray pipe and a diffuser and vertically penetrate through a central cavity of a temperature source from top to bottom along the axis of the spray pipe;
The spectrometer and the CCD camera which are connected through a lead are arranged outside an observation window of the test section, and a convex lens is also arranged between the spectrometer and the observation window;
the CCD camera is connected with the computer through a network cable;
The temperature source is a circular tube, the circular tube is sequentially provided with a coaxial shell, an insulating layer and an electric heating tube from outside to inside, thermocouples which are distributed in parallel from top to bottom along the vertical direction are arranged at the 0-degree side wall position of the middle section of the circular tube, corresponding optical glass is arranged at the 180-degree side wall position, and a cavity of the middle section of the circular tube is a measuring area.
Further, Δt is 10K, 20K, 50K, 100K or 200K.
Further, the optical glass is quartz glass, white stone or sapphire.
Further, the length-diameter ratio of the electric heating tube is more than or equal to 8.
The thermocouple in the low-density wind tunnel flow field vibration temperature calibration device based on the electron beam fluorescence technology can be used for monitoring whether the temperature of a measurement area is uniform or not.
The low-density wind tunnel flow field vibration temperature calibration device based on the electron beam fluorescence technology has the advantages of simple and reliable structure and accurate calibration.
Drawings
FIG. 1 is a schematic diagram (front view) of a low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology;
fig. 2 is a schematic diagram (side view) of a low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology.
FIG. 3 is a schematic diagram of a temperature source in the low-density wind tunnel flow field vibration temperature calibration device based on the electron beam fluorescence technology;
Fig. 4a is a spectrum intensity curve (vibration temperature tv=400K) obtained by the vibration temperature calibration device of the low-density wind tunnel flow field based on the electron beam fluorescence technology;
fig. 4b is a spectrum intensity curve (vibration temperature tv=600k) obtained by the vibration temperature calibration device of the low-density wind tunnel flow field based on electron beam fluorescence technology;
Fig. 4c is a spectrum intensity curve (vibration temperature tv=800K) obtained by the vibration temperature calibration device of the low-density wind tunnel flow field based on the electron beam fluorescence technology;
fig. 4d is a spectrum intensity curve (vibration temperature tv=1000k) obtained by the vibration temperature calibration device of the low-density wind tunnel flow field based on the electron beam fluorescence technology;
FIG. 5 is a graph of vibration temperature-characteristic wavelength intensity ratio calibration obtained by the low density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology;
FIG. 6 is a graph of the vibration temperature distribution of the flow field measured after calibration using the electron beam fluorescence technology-based low density wind tunnel flow field vibration temperature calibration device of the present invention.
In the figure, 1, a test section 2, an electron gun 3, an electron beam 4, a temperature source 5, a Faraday cup 6, a viewing window 7, a convex lens 8, a spectrometer 9, a CCD camera 10, a computer 11, a diffuser 12 and a spray pipe;
41. The device comprises a shell 42, a heat insulation layer 43, optical glass 44, a measuring area 45, a thermocouple 46 and an electric heating tube.
In fig. 6, +.s represents the radial vibration temperature profile of the nozzle outlet x=100 mm cross section;
■ A radial vibration temperature profile representing a nozzle outlet x=150 mm cross section;
and (c) represents a radial vibration temperature profile of the nozzle outlet x=200 mm cross section;
the o-ring represents the radial vibration temperature profile of the nozzle outlet x=250 mm cross section.
Detailed description of the preferred embodiments
The invention is described in detail below with reference to the drawings and examples.
As shown in fig. 1 and 2, the low-density wind tunnel flow field vibration temperature calibration device based on the electron beam fluorescence technology comprises an electron gun 2 arranged in a residence chamber on a test section 1 of a hypersonic low-density wind tunnel, a faraday cup 5 arranged in a residence chamber below the test section 1 of the hypersonic low-density wind tunnel, wherein the faraday cup 5 is used for receiving an electron beam 3 emitted by the electron gun 2, and the electron beam 3 is positioned between a spray pipe 12 and a diffuser 11 and vertically penetrates through a central cavity of a temperature source 4 from top to bottom along the axis of the spray pipe 12;
The spectrometer 8 and the CCD camera 9 which are connected through a lead are arranged outside the observation window 6 of the test section 1, and a convex lens 7 is also arranged between the spectrometer 8 and the observation window 6;
the CCD camera 9 is connected with the computer 10 through a network cable;
As shown in fig. 3, the temperature source 4 is a circular tube, the circular tube is sequentially provided with a coaxial shell 41, a heat insulation layer 42 and an electric heating tube 46 from outside to inside, thermocouples 45 which are distributed in parallel from top to bottom along the vertical direction are installed at the 0-degree side wall position in the middle section of the circular tube, corresponding optical glass 43 is installed at the 180-degree side wall position, and a cavity in the middle section of the circular tube is a measurement area 44.
Further, Δt is 10K, 20K, 50K, 100K or 200K.
Further, the optical glass 43 is quartz glass, sapphire or sapphire.
Further, the aspect ratio of the electrothermal tube 46 is 8 or more.
Example 1
The embodiment provides a calibration step of the low-density wind tunnel flow field vibration temperature calibration device based on the electron beam fluorescence technology and a calibrated low-density wind tunnel flow field vibration temperature measurement method. The test conditions were: cone nozzle with mach number 12, total pressure P 0 =1 MPa, total temperature T 0 =600k.
A. Firstly, the test section 1 of the low-density wind tunnel is vacuumized to be below 20Pa, the temperature source 4 is electrified and heated, the temperature is raised to 1000K from room temperature, the interval DeltaT=200K, after the temperature is stable at each temperature step, the electron gun 2 is started to emit electron beams 3, the electron beams 3 pass through the temperature source 4, electron beam fluorescence generated in the measurement area 44 is collected to a slit inlet of the spectrometer 8 through the optical glass 43 by the convex lens 7, electron beam fluorescence vibration bands of each temperature step are generated in the spectrometer 8 by the electron beam fluorescence, the CCD camera 9 records electron beam fluorescence vibration band images F1, F2, … … and Fn of each temperature step and transmits the electron beam fluorescence vibration band images to the computer 10 for processing, and the electron gun 2 and the temperature source 4 are closed; the electron beam fluorescence vibration band images of the respective temperature steps are shown in fig. 4a, 4b, 4c, 4d;
b. the computer 10 performs spectrum analysis on F1, F2, … … and Fn, selects the same spectrum intensities of two characteristic wavelengths at each temperature step, calculates the spectrum intensity ratio, and draws a vibration temperature-characteristic wavelength intensity ratio calibration curve shown in FIG. 5 to complete vibration temperature calibration;
c. opening the test section 1, taking out the temperature source 4, and closing the test section 1;
d. vacuumizing the test section 1 to below 20Pa, starting a low-density wind tunnel for blowing, starting an electron gun 2 for emitting electron beams 3, enabling the electron beams 3 to pass through a flow field of the low-density wind tunnel, recording electron beam fluorescence vibration band images of all measuring points of the section where the current position of the electron beams 3 is located by a CCD camera 9, and transmitting the electron beam fluorescence vibration band images to a computer 10;
e. synchronously moving the electron gun 2 and the spectrometer 8 to the next position, and repeating the step d to obtain electron beam fluorescence vibration band images of all the measuring points of the section where the next position is located until obtaining electron beam fluorescence vibration band images of all the measuring points of the section where all the preset positions are located;
f. closing the electron gun 2, and stopping the low-density wind tunnel;
g. The computer 10 reads the electron beam fluorescence vibration band images of all the measuring points to obtain the spectrum intensity ratio of each measuring point, calculates the vibration temperature of each measuring point through the vibration temperature-characteristic wavelength intensity ratio calibration curve of the step b, and draws the vibration temperature distribution diagram of the low-density wind tunnel flow field, and the specific view is shown in fig. 6.
Claims (3)
1. The low-density wind tunnel flow field vibration temperature calibration device based on the electron beam fluorescence technology is characterized by comprising an electron gun (2) arranged in a residence chamber on a test section (1) of a hypersonic low-density wind tunnel, a Faraday cup (5) arranged in a residence chamber below the test section (1) of the hypersonic low-density wind tunnel, wherein the Faraday cup (5) is used for receiving an electron beam (3) emitted by the electron gun (2), and the electron beam (3) is positioned between a spray pipe (12) and a diffuser (11) and vertically penetrates through a central cavity of a temperature source (4) from top to bottom along the axis of the spray pipe (12);
The spectrometer (8) and the CCD camera (9) which are connected through a lead are arranged outside the observation window (6) of the test section (1), and a convex lens (7) is also arranged between the spectrometer (8) and the observation window (6);
the CCD camera (9) is connected with the computer (10) through a network cable;
The temperature source (4) is a circular tube, a coaxial shell (41), a heat preservation layer (42) and an electric heating tube (46) are sequentially arranged on the circular tube from outside to inside, thermocouples (45) which are distributed in parallel from top to bottom along the vertical direction are arranged at the 0-degree side wall position in the middle section of the circular tube, corresponding optical glass (43) is arranged at the 180-degree side wall position, and a cavity in the middle section of the circular tube is a measuring area (44).
2. The electron beam fluorescence technology-based low-density wind tunnel flow field vibration temperature calibration device according to claim 1, wherein the optical glass (43) is quartz glass, sapphire or sapphire.
3. The low-density wind tunnel flow field vibration temperature calibration device based on the electron beam fluorescence technology according to claim 1, wherein the length-diameter ratio of the electric heating tube (46) is more than or equal to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793453.XA CN111780944B (en) | 2020-08-10 | 2020-08-10 | Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793453.XA CN111780944B (en) | 2020-08-10 | 2020-08-10 | Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111780944A CN111780944A (en) | 2020-10-16 |
| CN111780944B true CN111780944B (en) | 2024-05-10 |
Family
ID=72762789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010793453.XA Active CN111780944B (en) | 2020-08-10 | 2020-08-10 | Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111780944B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670558B (en) * | 2021-08-30 | 2023-08-22 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Optical fiber rapid positioning method for wind tunnel cold leakage monitoring |
| CN114088336B (en) * | 2022-01-24 | 2022-04-08 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Method for synchronously measuring temperature and flow state by using fluorescent microwire |
| CN114563159B (en) * | 2022-04-28 | 2022-07-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | Hypersonic low-density wind tunnel nozzle inner axis Mach number measuring device and method |
| CN115574982B (en) * | 2022-11-21 | 2023-05-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Temperature-sensitive paint calibration device and calibration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005315707A (en) * | 2004-04-28 | 2005-11-10 | Nikon Corp | Temperature measuring device, exposure device and device manufacturing method |
| CN102539019A (en) * | 2012-01-05 | 2012-07-04 | 北京东方计量测试研究所 | Temperature measurement and calibration platform in space vacuum environment |
| CN104535251A (en) * | 2015-01-12 | 2015-04-22 | 中国科学院电子学研究所 | Temperature self-compensating method and measuring mode for double-resonator pressure sensor |
| CN111780946A (en) * | 2020-08-10 | 2020-10-16 | 中国空气动力研究与发展中心超高速空气动力研究所 | Low-density wind tunnel flow field vibration temperature measurement method based on electron beam fluorescence technology |
| CN212513552U (en) * | 2020-08-10 | 2021-02-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7324894B2 (en) * | 2004-04-13 | 2008-01-29 | Westinghouse Air Brake Technologies Corporation | Attitude detection method and apparatus for initial motion control |
| US7545138B2 (en) * | 2006-07-06 | 2009-06-09 | Schweitzer Engineering Laboratories, Inc. | Precision, temperature-compensated, shielded current measurement device |
-
2020
- 2020-08-10 CN CN202010793453.XA patent/CN111780944B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005315707A (en) * | 2004-04-28 | 2005-11-10 | Nikon Corp | Temperature measuring device, exposure device and device manufacturing method |
| CN102539019A (en) * | 2012-01-05 | 2012-07-04 | 北京东方计量测试研究所 | Temperature measurement and calibration platform in space vacuum environment |
| CN104535251A (en) * | 2015-01-12 | 2015-04-22 | 中国科学院电子学研究所 | Temperature self-compensating method and measuring mode for double-resonator pressure sensor |
| CN111780946A (en) * | 2020-08-10 | 2020-10-16 | 中国空气动力研究与发展中心超高速空气动力研究所 | Low-density wind tunnel flow field vibration temperature measurement method based on electron beam fluorescence technology |
| CN212513552U (en) * | 2020-08-10 | 2021-02-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology |
Non-Patent Citations (1)
| Title |
|---|
| 电子束荧光流场参数测量预先试验研究;陈爱国;中国力学学会流体力学专业委员会.第九届全国流体力学学术会议论文摘要集;20161220;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111780944A (en) | 2020-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111780944B (en) | Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology | |
| CN107884392B (en) | Arc heater air flow enthalpy value spectral measurement system | |
| CN110095248B (en) | High-frequency induction wind tunnel flow field imbalance diagnosis system and method | |
| CN212513552U (en) | Low-density wind tunnel flow field vibration temperature calibration device based on electron beam fluorescence technology | |
| US7118271B2 (en) | Calibrating temperature sensors of weathering devices by means of contactless temperature measurement | |
| CN103411940B (en) | Detection method and test device for catalytic properties of heatproof material based on emission spectrum | |
| CN106680224B (en) | Material oxidation ablation measuring device and its measurement method in a kind of high-temperature tunnel | |
| CN104880482A (en) | Method and device for measuring heat conductivity of quasi-one-dimensional conductive material | |
| JP4318758B2 (en) | Calibration medium for UV absorption detector | |
| CN110376272A (en) | The on-line measurement device and its On-line Measuring Method of partial pressure | |
| CN111780946B (en) | Low-density wind tunnel flow field vibration temperature measurement method based on electron beam fluorescence technology | |
| CN107941667B (en) | High-temperature environment gas-solid two-phase flow multi-parameter measuring device and method | |
| CN109030556A (en) | A kind of opaque solid material normal direction emissivity measurement device and measurement method based on solar simulator heating | |
| Sapritskii | National primary radiometric standards of the USSR | |
| CN112697738A (en) | Method and system for evaluating catalytic characteristics of surface of heat-proof material | |
| RU2664969C1 (en) | Laser radiation with structural materials interaction parameters examination test bench | |
| CN113640250B (en) | Atmospheric HONO isotope measurement system | |
| Murthy et al. | Radiative Calibration of Heat Flux Sensors at NIST: An Overview | |
| US3313154A (en) | Apparatus for measuring energy output of a laser | |
| Vagin et al. | Measurement of the temperature of gas media containing carbon dioxide by the laser-probing method | |
| CN207649770U (en) | Dielectric barrier discharge ion source | |
| RU2539124C1 (en) | Device to measure parameters of dielectrics at heating | |
| McCauley et al. | Spatially resolved in situ diagnostics for plasma-enhanced chemical vapor deposition film growth | |
| US3924123A (en) | Measurement of second virial coefficients | |
| CN109298012B (en) | Evaporation experiment platform under temperature and ambient wind speed coupling condition |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |