CN112982310B - Method for reducing sediment deposition in water delivery channel with rectangular section - Google Patents
Method for reducing sediment deposition in water delivery channel with rectangular section Download PDFInfo
- Publication number
- CN112982310B CN112982310B CN202110292195.1A CN202110292195A CN112982310B CN 112982310 B CN112982310 B CN 112982310B CN 202110292195 A CN202110292195 A CN 202110292195A CN 112982310 B CN112982310 B CN 112982310B
- Authority
- CN
- China
- Prior art keywords
- type guide
- guide vane
- water delivery
- section
- ploughshare
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Barrages (AREA)
Abstract
The invention discloses a method for reducing sediment deposition in a water delivery channel with a rectangular cross section, which comprises the following steps of manufacturing equipment embedded parts and plough share type guide vanes; the guide vanes have the same structure and are round table side wall cutting pieces, the radius of the upper bottom surface of the round table is that the radius of the lower bottom surface is 1:3:15, and the distance between two end points of the short arc of the ploughshare type guide vane is 1: 4; and secondly, constructing a concrete rectangular-section water delivery channel, preparing independent foundations before pouring concrete for lining the rectangular-section water delivery channel, arranging equipment embedded parts on the independent foundations one by one, welding each ploughshare-shaped guide vane on each equipment embedded part one by one, and enabling the arc-shaped concave surface of each guide vane to face the water direction. The invention can achieve the aim that the sediment deposition rate in the channel is below 5 percent, and realize long-term, continuous and stable water delivery of the water delivery channel.
Description
Technical Field
The invention relates to the technical field of long-distance water delivery in hydraulic engineering, in particular to a method for reducing sediment deposition in a water delivery channel with a rectangular cross section.
Background
The sediment deposition problem exists in the sediment-rich water delivery engineering (such as the Yanghuang engineering) in northwest China after the water delivery engineering is put into operation, when the sediment deposition is serious, the water level of a water delivery channel is higher, the water delivery safety of the water delivery channel is seriously threatened, and the long-term stable operation of the whole water delivery engineering is further influenced. For the artificially constructed open concrete water conveying canal with the rectangular cross section, the sediment deposition is caused by the sediment of wind sand along the line in the canal on one hand, and the sediment of the self-carried sediment of the water conveying body on the other hand. At present, the method of combining biological measures and engineering measures is often adopted for treatment, namely, the method combines enclosure, sand and grass barrier prevention and sand-growing plants (salix mongolica and the like) prevention and control, has some effects on wind and sand disaster relief, but has high investment and slow effect, can not solve the problem that the sediment is deposited in the water delivery channel along with the water delivery body, and still needs a large amount of labor force to carry out manual desilting.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for reducing sediment deposition in a water transport canal with a rectangular cross section, which specifically adopts the following technical scheme:
the invention relates to a method for reducing sediment deposition in a water conveying channel with a rectangular cross section, which comprises the following steps:
firstly, manufacturing equipment embedded parts and ploughshare type guide vanes; the plough share type guide vane has the same structure and is a truncated cone side wall cutting piece, the radius of the upper bottom surface of the truncated cone is that the radius of the lower bottom surface is that the height is =1:3:15, and the distance between two end points of the short circular arc of the plough share type guide vane is that the distance between two end points of the long circular arc is =1: 4;
and secondly, constructing a concrete water delivery channel with a rectangular cross section, preparing independent foundations before pouring concrete for lining the water delivery channel with the rectangular cross section, arranging equipment embedded parts on the independent foundations one by one, welding each ploughshare type guide vane on each equipment embedded part one by one, and enabling the arc-shaped concave surface of each ploughshare type guide vane to face the water direction.
The guide vanes are arranged on the bottom surface and the left side wall of the channel with the rectangular section.
The guide vanes are arranged in groups and are sequentially arranged along the water flow direction, each group of the ploughshare type guide vanes comprises a first ploughshare type guide vane arranged on the right side of the central line of the bottom of the canal, a second ploughshare type guide vane arranged on the left side of the central line of the bottom of the canal and a third ploughshare type guide vane arranged on the left side wall of the canal, the first ploughshare type guide vane, the second ploughshare type guide vane and the third ploughshare type guide vane are sequentially arranged from front to back along the water flow direction, the first ploughshare type guide vane and the second ploughshare type guide vane are arranged in a collinear mode with the central line of the bottom of the canal in the horizontal direction at an included angle of 30-35 degrees, and the third ploughshare type guide vane is obliquely arranged upwards at an included angle of 30-35 degrees with the horizontal line.
The ploughshare type guide vane is a stainless steel sheet with the thickness of 5-8mm, and the planes of two end points of the short arc and the bottom end point of the long arc are vertical to the bottom surface/left side wall of the water delivery channel with the rectangular section.
The short arc and the long arc top end of the ploughshare type guide vane are of a passivation fillet structure.
The equipment embedded part is composed of a base plate and a handle rib welded on the base plate, the base plate is a rectangular stainless steel plate, the handle rib is a door-shaped deformed steel bar with an inner hook at the tail part, and the handle rib is connected with the base plate in a fillet welding mode.
The base plates correspond to the ploughshare type guide vanes one by one, and a plurality of handle ribs are uniformly arranged on each base plate at intervals along the longitudinal direction.
Research shows that the reason that sediment deposition is easily generated by silt-rich water flow in an open channel is that the sediment in a water body is high in sediment content and the specific gravity of the sediment is greater than that of water, so that the sediment can sink in addition to moving forwards in the flowing process of the water body, and the sediment can be gradually deposited at the bottom of the water body when the water body moves for a long distance and a long time; secondly the velocity of flow of rivers each point is different in the channel, and the velocity of flow that is close to channel bottom and canal side wall edge is less, and the channel center is close the velocity of flow of surface of water department the biggest, obtains according to the law of motion analysis of silt: silt can be started when the critical flow rate is required to be achieved, silt deposition can be caused when the flow rate is less than a certain value, namely the movement of the silt depends on a relatively large flow rate interval, and the deposition of the silt depends on a relatively small flow rate interval.
The water body in the water delivery channel can be divided into three states of laminar flow, transitional flow and turbulent flow according to the flow velocity, and when the flow velocity is very small, the fluids flow in layers and are not mixed with each other, so that the laminar flow is called; gradually increasing the flow velocity, starting the wave-shaped oscillation of the streamline of the fluid, increasing the frequency and amplitude of the oscillation along with the increase of the flow velocity, and the flow condition is called transition flow; as the flow velocity continues to increase to a large extent, the streamlines are no longer clearly distinguishable and there are many small eddies in the flow field, known as turbulence. Generally, the silt at the bottom of the water delivery channel can start moving under the condition of critical flow velocity, namely turbulent flow, and the silt can deposit and fall again under the condition of the flow velocity less than the critical flow velocity, namely turbulent flow.
Therefore, the plough share type guide vanes are arranged at the bottom and on the side wall of the water delivery channel, the kinetic energy of the water body in the water delivery channel is utilized to gather energy at the bottom and on the side wall of the water delivery channel, the flowing speed and the flowing direction of the water body are changed, the water body flowing at the bottom and on the side wall of the water delivery channel is in a turbulent flow state, sediment suspended in the water body is prevented from depositing, the sediment is further far away from the bottom of the water delivery channel, the aim that the sediment deposition rate in the channel is lower than 5% is basically achieved, and long-term, continuous and stable water delivery of the water delivery channel is achieved.
Drawings
FIG. 1 is a schematic view of a rectangular cross-section water delivery channel according to the present invention.
Fig. 2 is a view from direction K-K in fig. 1.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic view illustrating a manufacturing process of the ploughshare type guide vane shown in fig. 1.
Fig. 5 is a finished view of the ploughshare-type guide vane of fig. 1.
Fig. 6 is a schematic view of the structure of the device insert of fig. 1.
Fig. 7 is an enlarged view of the section I-I of fig. 6.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and give detailed implementation manners and specific working procedures, but the scope of the present invention is not limited to the following embodiments.
The invention relates to a method for reducing sediment deposition in a water channel with a rectangular cross section, which comprises the following steps:
firstly, manufacturing equipment embedded parts and ploughshare type guide vanes; the plough share type guide vane has the same structure and is a truncated cone side wall cutting piece, the radius of the upper bottom surface of the truncated cone is that the radius of the lower bottom surface is that the height is 1:3:15, and the distance between two end points of the short circular arc of the guide vane is that the distance between two end points of the long circular arc is 1: 4;
and secondly, constructing a concrete rectangular-section water delivery channel, making an independent foundation required by equipment embedded parts before pouring concrete in the rectangular-section water delivery channel, arranging the equipment embedded parts on each independent foundation one by one, welding each ploughshare type guide vane on each equipment embedded part one by one, and enabling the arc-shaped concave surface of each ploughshare type guide vane to face the water direction.
As shown in fig. 1 to 7, in this embodiment, the guide vane 2 on the concrete water delivery channel 1 with a rectangular cross section has a water-facing surface with an arc concave structure, the ploughshare-shaped guide vane 2 is welded with the equipment embedding part 3, and the equipment embedding part 3 is embedded on the independent foundation 21 of the bottom surface and the left side wall of the water delivery channel 1 with a rectangular cross section.
Specifically, as shown in fig. 6 and 7, the device-embedded member 3 is composed of a rectangular stainless steel plate base plate 301 and a plurality of bar ribs 302. The length of the substrate 301 is an integral multiple of 300mm, and the width is 300-500 mm; the rib 302 is bent into a door-shaped structure by adopting common screw-thread steel, and two inner hooks are manufactured at the tail part for reinforcing the connection with the independent foundation 21 in the concrete water delivery channel 1 with the rectangular section. The ribs 302 are connected with the base plate 301 in a fillet welding mode, the longitudinal distance between every two adjacent ribs 302 is 300mm, and the distance between the two ends of each rib 302 and the end of the base plate 301 is 150 mm. The equipment embedded part 3 looks like a centipede worm after being manufactured.
The ploughshare type guide vane 2 is a ploughshare type structure formed by cutting the side wall of the circular truncated cone, and can change the flow state of a water body, thereby reducing the sediment deposition in the water delivery channel with the rectangular section. The radius of the upper bottom surface of the circular truncated cone is that the radius of the lower bottom surface is that the height is =1:3:15, and the distance between two short circular arcs of the ploughshare type guide vane is that the distance between two long circular arcs is that =1: 4. Specifically, as shown in fig. 4 and 5, a circular truncated cone with a small-end radius r, a large-end radius 3r and a height 15r is manufactured by rolling a 304 stainless steel sheet with a thickness of 5-8mm, a line segment AC = h is taken from an intersection line DC of the section of any shaft of the circular truncated cone and the side wall of the circular truncated cone, a point a is taken from the circumference of the small end of the circular truncated cone, a point B is taken from the circumference of the large end of the circular truncated cone, a line segment BD =4h is taken, then a curved surface formed by A, B, D, C four points is taken as a ploughshare type guide vane 2, and a point a and a point C are ground to ensure that the appearance is passivated and round. When the ploughshare type guide vane 2 is welded and installed, the ploughshare type guide vane is required to be in one-to-one correspondence with the base plate 301 of the equipment embedded part 3, and a plane formed by three points A, B, C is kept to be vertical to the base plate 301.
The ploughshare type guide vanes 2 are arranged in groups and are arranged in sequence along the water flow direction. Specifically, before a construction canal bottom of the water delivery canal 1 with the rectangular cross section is built and lining concrete is poured on a canal side wall, independent foundations 21 required by equipment embedded parts are made, then the equipment embedded parts 3 are arranged on the independent foundations 21 one by one, and then the plough share type guide vanes 2 are welded on the equipment embedded parts 3. As shown in fig. 1-3, each group of the ploughshare type guide vanes 2 comprises a first ploughshare type guide vane 201 located on the right side of the center line n of the canal bottom, a second ploughshare type guide vane 202 located on the left side of the center line n of the canal bottom, and a third ploughshare type guide vane 203 located on the left side wall of the canal, and the first ploughshare type guide vane 201, the second ploughshare type guide vane 202 and the third ploughshare type guide vane 203 in the same group are sequentially arranged from upstream to downstream along the water flow direction, the first ploughshare type guide vane 201 and the second ploughshare type guide vane 202 are arranged in a 30-degree included angle collineation with the center line n of the horizontal direction of the canal bottom, and the third ploughshare type guide vane 203 is arranged upwards inclined at a 30-degree included angle with the horizontal line.
The ploughshare type guide vane 2 not only can change the flow direction of the water body flowing from the bottom of the water delivery channel 1 with the rectangular section, namely the water flowing from the direction parallel to the center line of the channel deflects clockwise by about 30-35 degrees; when the channel normally runs with water, the water body close to the bottom of the water delivery channel and the left side wall of the channel can rotate 90 degrees clockwise, the thickness of the water body is effectively turned to be 30cm, even if the water body at the bottom of the water delivery channel rotates to the left side part of the channel, the water body at the left side part of the water delivery channel rotates to the upper part of the channel, the water body self-rotation is formed, and silt runs in the water body in a turbulent flow state; meanwhile, local water body rolling can be realized, local water body turbulence is artificially produced, and sediment in the water body is prevented from depositing at the bottom of the channel. In the embodiment, every three parts of the plough share type guide vanes 2 form a group, and each group of the plough share type guide vanes 2 is arranged at the bottom of the water delivery channel 1 with the rectangular cross section and on the independent foundation 21 of the side wall, so that the effect of preventing sediment in the water body from depositing at the bottom of the channel is achieved, the sediment to be deposited at the bottom of the channel is pushed to the left half side of the channel bottom from the right half side of the channel bottom, the plough share type guide vanes on the left side wall of the rectangular water delivery channel further push the sediment to be deposited to the upper water body far away from the channel bottom, and the problem of sediment deposition in the water delivery channel with the rectangular cross section is successfully solved by utilizing natural conditions that the flow velocity close to the bottom of the channel and the edge of the side wall of the channel is small, and the flow velocity close to the water surface of the center of the channel is maximum.
The longitudinal distance of the adjacent groups of ploughshare type guide vanes 2 along the water flow direction is determined by simulation calculation or simulation test of the particle diameter of silt, the specific gravity of the silt and the water flow velocity of the silt in the water according to the construction conditions (such as the specific shape of the water transfer channel, the flow cross section area, the water flow velocity and the like) of the water transfer channel 1 with the rectangular cross section, so that the sediment stroke and time are controlled. For a complete water delivery channel with a rectangular section, the longitudinal distance between two adjacent groups of ploughshare type guide vanes is equal in value.
The invention has the following beneficial effects in the using process:
1. manual dredging is reduced, and labor force can be saved by centralized dredging compared with dispersed dredging.
2. The kinetic energy of the water body is utilized to change the direction of the flow velocity, and the rotation is formed, so that the sediment deposition is reduced, the roughness of the bottom of the water delivery channel with the rectangular section is reduced, the water energy loss can be reduced, and the water delivery flow is increased.
3. The method has important significance for the economic development and political stability of China's society by saving dredging time and improving water supply efficiency for the perennial continuous water supply operation mode channel.
4. And (4) comprehensively utilizing the sand and mud which are intensively cleaned as resources to manufacture the building material.
5. The water delivery channel with the rectangular section has long service life and low operation and management cost.
It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (5)
1. A method for reducing sediment deposition in a water conveying channel with a rectangular cross section is characterized in that: the method comprises the following steps:
firstly, manufacturing equipment embedded parts and ploughshare type guide vanes; the plough share type guide vane has the same structure and is a truncated cone side wall cutting piece, the radius of the upper bottom surface of the truncated cone is that the radius of the lower bottom surface is that the height is =1:3:15, and the distance between two end points of the short circular arc of the plough share type guide vane is that the distance between two end points of the long circular arc is =1: 4;
secondly, constructing a concrete rectangular-section water delivery channel, making independent foundations before pouring concrete in the rectangular-section water delivery channel, arranging equipment embedded parts on each independent foundation one by one, welding each ploughshare type guide vane on each equipment embedded part one by one, and enabling the arc concave surface of each ploughshare type guide vane to face the water incoming direction;
the ploughshare type guide vanes are arranged on the bottom surface and the left side wall of the channel with the rectangular section;
the first ploughshare type guide vane, the second ploughshare type guide vane and the third ploughshare type guide vane are sequentially arranged from front to back along the water flow direction, the first ploughshare type guide vane and the second ploughshare type guide vane are arranged at the center line of the bottom of the canal in a 30-35 degree included angle with the center line of the horizontal direction of the bottom of the canal, and the third ploughshare type guide vane is obliquely and upwards arranged at an included angle of 30-35 degree with the horizontal line.
2. The method of reducing sediment deposition in a rectangular cross section raceway of claim 1, comprising: the ploughshare type guide vane is a stainless steel sheet with the thickness of 5-8mm, and the planes of two end points of the short arc and the bottom end point of the long arc are vertical to the bottom surface/left side wall of the water delivery channel with the rectangular section.
3. The method of reducing sediment deposition in a rectangular cross section raceway of claim 1, comprising: the short arc and the long arc top end of the ploughshare type guide vane are of a passivation fillet structure.
4. The method of reducing sediment deposition in a rectangular cross section raceway of claim 1, comprising: the equipment embedded part is composed of a base plate and a handle rib welded on the base plate, the base plate is a rectangular stainless steel plate, the handle rib is a door-shaped deformed steel bar with an inner hook at the tail part, and the handle rib is connected with the base plate in a fillet welding mode.
5. The method of reducing sediment deposition in a rectangular cross section raceway of claim 4, wherein: the base plates correspond to the ploughshare type guide vanes one by one, and a plurality of handle ribs are uniformly arranged on each base plate at intervals along the longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110292195.1A CN112982310B (en) | 2021-03-18 | 2021-03-18 | Method for reducing sediment deposition in water delivery channel with rectangular section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110292195.1A CN112982310B (en) | 2021-03-18 | 2021-03-18 | Method for reducing sediment deposition in water delivery channel with rectangular section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112982310A CN112982310A (en) | 2021-06-18 |
| CN112982310B true CN112982310B (en) | 2022-07-01 |
Family
ID=76333632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110292195.1A Active CN112982310B (en) | 2021-03-18 | 2021-03-18 | Method for reducing sediment deposition in water delivery channel with rectangular section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112982310B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003970A (en) * | 2006-06-29 | 2007-07-25 | 谭培根 | Conveyer way of self-discharging sand |
| JP2010001698A (en) * | 2008-06-23 | 2010-01-07 | Kunihiro Suzuki | Sediment discharge of head works |
| CN208501642U (en) * | 2018-05-24 | 2019-02-15 | 河南沃德智能化工程有限公司 | A kind of water conservancy irrigation water channel with dredging function |
| CN211773375U (en) * | 2019-12-29 | 2020-10-27 | 上海山恒生态科技股份有限公司 | Novel ecological water conservancy diversion canal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7192217B2 (en) * | 2003-03-01 | 2007-03-20 | United States Of America Department Of The Interior, Bureau Of Reclamation | Baffle apparatus |
| CN200952131Y (en) * | 2006-06-29 | 2007-09-26 | 谭培根 | Gallery self-discharging sand mechanism |
-
2021
- 2021-03-18 CN CN202110292195.1A patent/CN112982310B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003970A (en) * | 2006-06-29 | 2007-07-25 | 谭培根 | Conveyer way of self-discharging sand |
| JP2010001698A (en) * | 2008-06-23 | 2010-01-07 | Kunihiro Suzuki | Sediment discharge of head works |
| CN208501642U (en) * | 2018-05-24 | 2019-02-15 | 河南沃德智能化工程有限公司 | A kind of water conservancy irrigation water channel with dredging function |
| CN211773375U (en) * | 2019-12-29 | 2020-10-27 | 上海山恒生态科技股份有限公司 | Novel ecological water conservancy diversion canal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112982310A (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Thompson | The velocity-reversal hypothesis revisited | |
| CN102966082A (en) | Aeration facility with downward-bent base slab | |
| CN112984263A (en) | Method for reducing sediment deposition in water pipeline | |
| CN203530941U (en) | Split-level and dislocated type multiple-grooved spillway structure | |
| CN112982310B (en) | Method for reducing sediment deposition in water delivery channel with rectangular section | |
| CN214993571U (en) | Rectangular section water delivery channel capable of reducing sediment deposition | |
| CN112982309B (en) | Method for reducing sediment deposition in water conveying channel with trapezoidal section | |
| CN214573743U (en) | Can reduce sedimentary trapezoidal section water delivery canal of silt | |
| CN204644955U (en) | A kind of water conservancy diversion, energy-dissipating structure being applicable to tidal waterway water drainage hinge | |
| CN105735219B (en) | A kind of slight drag multi-purpose type harrows dirt gripper | |
| CN112982311B (en) | Method for reducing sediment deposition in U-shaped aqueduct | |
| CN214573742U (en) | Can reduce sedimentary U-shaped aqueduct of silt | |
| CN212077857U (en) | Adjustable vortex-eliminating rectifying device | |
| CN204676677U (en) | Silting blocking formula inverted-siphon sewer system | |
| CN214574251U (en) | U-shaped aqueduct capable of removing deposited sediment | |
| CN112982312B (en) | Method for removing sediment by utilizing U-shaped aqueduct | |
| CN108130948B (en) | Pressure flow water inlet runner system suitable for deep underground drainage lifting pump station | |
| CN204040094U (en) | A kind of magnetic fluid transport pipeline of cutter suntion dredger | |
| CN203684182U (en) | Improved spillway | |
| CN207646698U (en) | Training for sediment structure with suspended sediment collecting function | |
| CN113265991B (en) | Method for rebuilding multiple diversion tunnels into rotational flow vertical shaft flood discharge system | |
| CN214999885U (en) | Water pipeline capable of reducing sediment deposition | |
| CN107654330A (en) | A kind of power device for generating hydroelectricity for not blocking river course | |
| CN101768986B (en) | Jet pipe used for dredging below hydraulic underwater horizontal gate and application method thereof | |
| CN109083107B (en) | Aeration facility for forming aeration cavity by utilizing water flow centripetal force inertia turbulence |
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 |