CN110864294A - Asymmetric burner - Google Patents
Asymmetric burner Download PDFInfo
- Publication number
- CN110864294A CN110864294A CN201911158536.5A CN201911158536A CN110864294A CN 110864294 A CN110864294 A CN 110864294A CN 201911158536 A CN201911158536 A CN 201911158536A CN 110864294 A CN110864294 A CN 110864294A
- Authority
- CN
- China
- Prior art keywords
- burner
- channel
- asymmetric
- gas pipe
- burner head
- 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
- 239000007789 gas Substances 0.000 claims abstract description 45
- 239000000112 cooling gas Substances 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims description 20
- 244000144985 peep Species 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 239000011449 brick Substances 0.000 description 14
- 238000010926 purge Methods 0.000 description 4
- 241001272720 Medialuna californiensis Species 0.000 description 3
- 208000008918 voyeurism Diseases 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The invention relates to an asymmetric burner, which belongs to the technical field of gas burners and is mainly used for industrial kilns in the industries of steel, nonferrous metal, machinery and the like. At present, most of burners with low NOx emission have complex structures, and the popularization and the application of the burners in industrial kilns are influenced. The invention comprises a burner head, a burner shell and a cooling gas pipe, and is structurally characterized in that: the burner is characterized in that the burner head and the cooling gas pipe are both arranged on the burner shell, the burner head is communicated with the cooling gas pipe, a burner core is arranged in the burner head, an air jet channel is arranged between the burner core and the burner head, a gas jet channel is arranged on the burner core, the gas jet channel is positioned above the axis of the burner head, the air jet channel is positioned below the axis of the burner head, and the cooling gas pipe is communicated with the gas jet channel. The combustion flame temperature is reduced, the flame rigidity is improved, the NOx emission is reduced, and the heating quality is improved.
Description
Technical Field
The invention relates to an asymmetric burner, which belongs to the technical field of gas burners of industrial kilns and is mainly used for industrial kilns in the industries of steel, nonferrous metal, machinery and the like.
Background
Most of the existing direct flame burners are of a symmetrical structure, namely a gas outlet is positioned in the center of an air outlet, the air outlet is uniformly distributed around the gas pipe serving as the center, the flame temperature of the structure is high, the content of NOx in combustion products is high, and the environment is greatly polluted, and the application of the burners with low NOx emission in an industrial furnace tends to be developed in the future, but most of the existing burners with low NOx emission are complex in structure, and the popularization and the application of the burners in the industrial furnace are influenced.
In view of the above, patent document No. 201721678965.1 discloses a burner block for a four-nozzle gasifier having an asymmetric structure, wherein the burner block is composed of a plurality of blocks, and a through hole is formed in the center of each block; the method is characterized in that: four the brick be two sets of that set up from top to bottom, every group is two: the brick I and the brick II are arranged in parallel, and the size of the brick I is smaller than that of the brick II; arc-shaped notches are formed in the inner sides of the brick I and the brick II, and the sizes of the arc-shaped notches on the brick I and the brick II are the same; two bricks I and two bricks II in the two groups of bricks arranged up and down are arranged diagonally to form the combined brick with staggered peaks. The nozzle combination brick for the four-nozzle gasification furnace with the asymmetric structure in the comparison document has high NOx content in combustion products and causes great pollution to the environment.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the asymmetric burner which is reasonable in structural design, reduces the temperature of combustion flame, reduces NOx emission and improves heating quality.
The technical scheme adopted by the invention for solving the problems is as follows: this asymmetric nozzle, including nozzle head, nozzle casing and cooling gas pipe, its structural feature lies in: the burner is characterized in that the burner head and the cooling gas pipe are both arranged on the burner shell, the burner head is communicated with the cooling gas pipe, a burner core is arranged in the burner head, an air jet channel is arranged between the burner core and the burner head, a gas jet channel is arranged on the burner core, the gas jet channel is positioned above the axis of the burner head, the air jet channel is positioned below the axis of the burner head, and the cooling gas pipe is communicated with the gas jet channel.
Further, an ignition gun mounting seat and a flame monitor mounting seat are mounted on the burner head, an ignition gun channel is arranged on the ignition gun mounting seat, a flame monitor channel is arranged on the flame monitor mounting seat, and the ignition gun channel and the flame monitor channel are communicated with a gas jet flow channel.
Furthermore, included angles exist between the axes of the ignition gun channel and the flame monitoring channel and the axis of the burner head.
Furthermore, a peephole channel is arranged on the burner core, is positioned below the axis of the burner head and is positioned above the air jet flow channel.
Further, the air jet flow channel and the peephole channel are communicated with an air circulation cavity, and the air circulation cavity is arranged in the burner shell.
Further, install air inlet flange and end cover on the nozzle casing, install peephole seat and sweep the hole seat on the end cover, peephole seat and sweep the hole seat and all be located the below of the axis of nozzle casing, and peephole seat is located the top of sweeping the hole seat.
Further, the end cover is installed at one end of the burner shell, and the burner head is installed at the other end of the burner shell.
Further, the cooling gas pipe comprises a cooling pipe, a gas pipe and a refractory lining, the refractory lining is sleeved outside the cooling pipe, and the cooling pipe is sleeved outside the gas pipe.
Further, the gas pipe is communicated with the gas jet flow channel.
Furthermore, the gas jet channel is arranged in a horn-shaped structure, and the cross section of the air jet channel is arranged in a half-moon-shaped, oval-shaped, fan-shaped or circular structure.
Furthermore, the number of the air jet flow channels is n, and n is more than or equal to 3 and more than or equal to 1.
Compared with the prior art, the invention has the following advantages: the combustion flame temperature is reduced, the flame rigidity is improved, the NOx emission is reduced, and the heating quality is improved.
Drawings
FIG. 1 is a schematic front view of an asymmetric burner according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of an asymmetric burner according to an embodiment of the present invention.
Fig. 3 is a right side view of the asymmetric burner with n =1 and the air jet channel in a half moon configuration according to the embodiment of the present invention.
Fig. 4 is a right-side structural schematic view of the asymmetric burner when n =1 and the air jet channel is arranged in an elliptical structure according to the embodiment of the present invention.
Fig. 5 is a right-side structural schematic view of the asymmetric burner when n =1 and the air jet channel is arranged in a fan-ring structure according to the embodiment of the present invention.
Fig. 6 is a right-side structural schematic view of the asymmetric burner when n =1 and the air jet channel is arranged in a circular structure according to the embodiment of the present invention.
Fig. 7 is a right side view of the asymmetric burner with n =2 and the air jet channels arranged in a half moon configuration according to the embodiment of the present invention.
Fig. 8 is a right-side structural schematic view of the asymmetric burner when n =2 and the air jet channel is arranged in an elliptical structure according to the embodiment of the present invention.
Fig. 9 is a right-side structural schematic view of the asymmetric burner when n =2 and the air jet channel is arranged in a fan-ring structure according to the embodiment of the present invention.
Fig. 10 is a right-side structural schematic view of the asymmetric burner when n =2 and the air jet channel is arranged in a circular structure according to the embodiment of the present invention.
Fig. 11 is a right side view of an asymmetric burner with n =3 and air jet channels arranged in a half moon configuration according to an embodiment of the present invention.
Fig. 12 is a right-side structural schematic view of the asymmetric burner with n =3 and the air jet passage arranged in an elliptical configuration according to the embodiment of the present invention.
Fig. 13 is a right-side structural schematic view of the asymmetric burner with n =3 and the air jet passage arranged in a fan-ring structure according to the embodiment of the present invention.
Fig. 14 is a right-side structural schematic view of the asymmetric burner with n =3 and the air jet passage arranged in a circular configuration according to the embodiment of the present invention.
In the figure: a burner head 1, a burner shell 2, a cooling gas pipe 3,
A burner core 11, an ignition gun mounting seat 12, a flame monitor mounting seat 13, a gas jet channel 14, an air jet channel 15, an ignition gun channel 16, a flame monitor channel 17, a peephole channel 18,
An air inlet connecting flange 21, an end cover 22, a peephole seat 23, a purging hole seat 24, an air circulation cavity 25,
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1 to 14, it should be understood that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical essence, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes, should still fall within the scope of the present invention without affecting the functions and the achievable objectives of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle" and "one" are used for clarity of description, and are not used to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
The asymmetric burner in this embodiment includes burner head 1, burner housing 2 and cooling gas pipe 3, and burner head 1 and cooling gas pipe 3 are all installed on burner housing 2, and burner head 1 and cooling gas pipe 3 intercommunication.
In this embodiment, a burner core 11 is installed in a burner head 1, an air jet channel 15 is disposed between the burner core 11 and the burner head 1, a gas jet channel 14 and a peephole channel 18 are disposed on the burner core 11, the gas jet channel 14 is located above an axis of the burner head 1, the air jet channel 15 is located below the axis of the burner head 1, a cooling gas pipe 3 is communicated with the gas jet channel 14, the burner core 11 is made of a refractory material in a general case, and the burner core 11 is disposed in the burner head 1.
An ignition gun mounting seat 12 and a flame monitor mounting seat 13 are mounted on a burner head 1 in the embodiment, an ignition gun channel 16 is arranged on the ignition gun mounting seat 12, a flame monitor channel 17 is arranged on the flame monitor mounting seat 13, and the ignition gun channel 16 and the flame monitor channel 17 are both communicated with a gas jet channel 14; the axes of the ignition gun channel 16 and the flame monitoring channel 17 form included angles with the axis of the burner head 1.
The peep hole channel 18 in this embodiment is located below the axis of the burner head 1, and the peep hole channel 18 is located above the air jet channel 15; the air jet channel 15 and the peephole channel 18 are both communicated with an air circulation cavity 25, and the air circulation cavity 25 is arranged in the burner shell 2.
An air inlet connecting flange 21 and an end cover 22 are installed on a burner shell 2 in the embodiment, a peeping hole seat 23 and a purging hole seat 24 are installed on the end cover 22, the peeping hole seat 23 and the purging hole seat 24 are both located below the axis of the burner shell 2, and the peeping hole seat 23 is located above the purging hole seat 24; the end cover 22 is installed at one end of the burner shell 2, the cooling gas pipe 3 is installed on the end cover 22 of the burner shell 2 through a flange in a normal condition, the burner head 1 is installed at the other end of the burner shell 2, and the burner head 1 is installed at the other end of the burner shell 2 through a flange in a normal condition.
The cooling gas pipe 3 in the embodiment comprises a cooling pipe 31, a gas pipe 32 and a refractory lining 33, wherein the refractory lining 33 is sleeved outside the cooling pipe 31, and the cooling pipe 31 is sleeved outside the gas pipe 32; the gas pipe 32 is communicated with the gas jet flow passage 14, the cooling pipe 31 is usually flange-mounted on the end cover 22 of the burner housing 2, the cooling pipe 31 is usually inserted into the burner housing 2 and communicated with the burner core 11, and the gas pipe 32 is placed in the cooling pipe 31 and connected with the cooling pipe 31 through a flange.
The cooling gas pipe 3 is usually installed on the burner housing 2, and passes through the air flow cavity 25 inside the burner housing 2, and is inserted into the gas jet flow channel 14 on the burner core 11, the outlet of the cooling gas pipe 3 is placed in the gas jet flow channel 14, and the cooling pipe 31 is wrapped with a layer of refractory lining 33 through the air flow cavity 25.
Normally, a flange is arranged on the cooling pipe 31, the cooling pipe 31 is made of a heat-resistant alloy steel pipe, the gas pipe 32 is arranged in the cooling pipe 31, the gas pipe 32 is fixed with the cooling pipe 31 through the flange, the outlet end of the gas pipe 32 is in a contracted shape, and the outlet of the gas pipe 32 is flush with the outlet of the cooling pipe 31 and is communicated with the gas jet flow channel 14 which is arranged in a trumpet-shaped structure.
The gas jet channel 14 in this embodiment is arranged in a trumpet-shaped structure, the gas jet channel 14 is usually arranged above the axis of the burner head 1 rather than along the central axis, the cross section of the air jet channel 15 is arranged in a half-moon-shaped, oval, fan-ring-shaped or circular structure, and the air jet channel 15 is usually arranged below the axis of the burner head 1 rather than uniformly arranged around the central axis; the number of the air jet flow passages 15 is n, and 3. gtoreq.n.gtoreq.1.
All orientation descriptions are referenced to fig. 2.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides an asymmetric nozzle, includes nozzle head (1), nozzle casing (2) and cooling gas pipe (3), its characterized in that: burner head (1) and cooling gas pipe (3) are all installed on burner casing (2) and burner head (1) and cooling gas pipe (3) intercommunication, install burner core (11) in burner head (1), be provided with air jet channel (15) between burner core (11) and burner head (1), be provided with gas jet channel (14) on burner core (11), gas jet channel (14) are located the top of the axis of burner head (1), air jet channel (15) are located the below of the axis of burner head (1), cooling gas pipe (3) and gas jet channel (14) intercommunication.
2. An asymmetric burner according to claim 1, wherein: an ignition gun mounting seat (12) and a flame monitor mounting seat (13) are mounted on the burner head (1), an ignition gun channel (16) is arranged on the ignition gun mounting seat (12), a flame monitor channel (17) is arranged on the flame monitor mounting seat (13), and the ignition gun channel (16) and the flame monitor channel (17) are both communicated with a gas jet channel (14); and/or; the axes of the ignition gun channel (16) and the flame monitoring channel (17) form included angles with the axis of the burner head (1).
3. An asymmetric burner according to claim 1, wherein: the burner core (11) is provided with a peephole channel (18), the peephole channel (18) is positioned below the axis of the burner head (1), and the peephole channel (18) is positioned above the air jet flow channel (15).
4. An asymmetric burner according to claim 3, wherein: the air jet flow channel (15) and the peephole channel (18) are both communicated with an air circulation cavity (25), and the air circulation cavity (25) is arranged in the burner shell (2).
5. An asymmetric burner according to claim 1, wherein: install air inlet flange (21) and end cover (22) on nozzle shell (2), install peep hole seat (23) and sweep hole seat (24) on end cover (22), peep hole seat (23) and sweep hole seat (24) all are located the below of the axis of nozzle shell (2), and peep hole seat (23) are located the top of sweeping hole seat (24).
6. An asymmetric burner according to claim 5, wherein: the end cover (22) is installed at one end of the burner shell (2), and the burner head (1) is installed at the other end of the burner shell (2).
7. An asymmetric burner according to claim 1, wherein: cooling gas pipe (3) include cooling tube (31), gas pipe (32) and refractory lining (33), refractory lining (33) suit is outside cooling tube (31), cooling tube (31) suit is outside gas pipe (32).
8. An asymmetric burner according to claim 7, wherein: the gas pipe (32) is communicated with the gas jet flow channel (14).
9. An asymmetric burner according to claim 1, wherein: the gas jet channel (14) is in a horn-shaped structure, and the air jet channel (15) is in a half-moon-shaped, oval-shaped, fan-shaped or circular structure.
10. An asymmetric burner according to claim 1, wherein: the number of the air jet flow channels (15) is n, and n is more than or equal to 3 and more than or equal to 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865679 | 2019-10-31 | ||
| CN2019218656795 | 2019-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110864294A true CN110864294A (en) | 2020-03-06 |
Family
ID=69655166
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922046640.7U Active CN211424387U (en) | 2019-10-31 | 2019-11-22 | Asymmetric burner |
| CN201911158536.5A Pending CN110864294A (en) | 2019-10-31 | 2019-11-22 | Asymmetric burner |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922046640.7U Active CN211424387U (en) | 2019-10-31 | 2019-11-22 | Asymmetric burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN211424387U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211424387U (en) * | 2019-10-31 | 2020-09-04 | 杭州中景科技有限公司 | Asymmetric burner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687854A1 (en) * | 1994-06-13 | 1995-12-20 | N.V. Acotech S.A. | Burner with recirculation of exhaust gas |
| JPH10300018A (en) * | 1997-04-23 | 1998-11-13 | Osaka Gas Co Ltd | Low nox burner |
| CN101551105A (en) * | 2009-05-21 | 2009-10-07 | 重庆赛迪工业炉有限公司 | A wide flame burner |
| CN203949180U (en) * | 2014-06-06 | 2014-11-19 | 绍兴曙光机械有限公司 | A kind of Coal Chemical Industry cooling device |
| CN208487614U (en) * | 2018-04-19 | 2019-02-12 | 杭州中景科技有限公司 | A kind of low NOx updraft burner |
| CN211424387U (en) * | 2019-10-31 | 2020-09-04 | 杭州中景科技有限公司 | Asymmetric burner |
-
2019
- 2019-11-22 CN CN201922046640.7U patent/CN211424387U/en active Active
- 2019-11-22 CN CN201911158536.5A patent/CN110864294A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687854A1 (en) * | 1994-06-13 | 1995-12-20 | N.V. Acotech S.A. | Burner with recirculation of exhaust gas |
| JPH10300018A (en) * | 1997-04-23 | 1998-11-13 | Osaka Gas Co Ltd | Low nox burner |
| CN101551105A (en) * | 2009-05-21 | 2009-10-07 | 重庆赛迪工业炉有限公司 | A wide flame burner |
| CN203949180U (en) * | 2014-06-06 | 2014-11-19 | 绍兴曙光机械有限公司 | A kind of Coal Chemical Industry cooling device |
| CN208487614U (en) * | 2018-04-19 | 2019-02-12 | 杭州中景科技有限公司 | A kind of low NOx updraft burner |
| CN211424387U (en) * | 2019-10-31 | 2020-09-04 | 杭州中景科技有限公司 | Asymmetric burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN211424387U (en) | 2020-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102230626B (en) | Transverse baffle and flat pipe type self-preheating burner | |
| CN101614394B (en) | Method and device thereof for stably burning various fuel gases with high-low calorific values | |
| CN112460567B (en) | Gas boiler with concentric single pipe ring water-cooling combustion and heat exchange | |
| CN104764017A (en) | Water-cooling type gas burner | |
| CN211424387U (en) | Asymmetric burner | |
| CN103502734B (en) | Heat-accumulating burner | |
| CN207958277U (en) | A kind of burner | |
| CN104312633B (en) | Overhead type multi nozzle of gasification furnace | |
| CN206112907U (en) | Gas industrial boiler burner | |
| CN202082934U (en) | Flat tubular self-preheating burner nozzle for flow dismounting plate | |
| CN216473314U (en) | Fluid stirring purification element with scroll structure | |
| CN2861169Y (en) | Top burning hot blast stove with high smoke-discharging temperature | |
| CN102072488A (en) | High speed burner for combustion chamber with film cooling type corrugated shell structure | |
| CN201819218U (en) | Horizontal internal mixing type ceramics burner used for top combustion stove | |
| CN211424382U (en) | Low NOx wide flat flame burner | |
| CN109504446A (en) | Gasification furnace | |
| CN109945192B (en) | High-calorific-value fuel concentric jet air single-heat-storage burner | |
| CN108534138B (en) | Graded low NOx straight flame burner | |
| CN1858492A (en) | Multiple fire hole flame-free ceramic burner | |
| CN209706054U (en) | A kind of concentric jet air single regenerative burner of exotic fuels | |
| CN215294905U (en) | Asymmetric low NOx nozzle | |
| CN112197296A (en) | Flame tube wall plate | |
| CN211475930U (en) | Heat accumulating type natural gas direct flame burner | |
| CN220229258U (en) | Carbon black reaction furnace combustion chamber with cold air protection | |
| CN220017353U (en) | Burner and combustion device using same |
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 |