CN113932613A - Connecting structure of kiln nozzle brick and kiln nozzle - Google Patents
Connecting structure of kiln nozzle brick and kiln nozzle Download PDFInfo
- Publication number
- CN113932613A CN113932613A CN202111276627.6A CN202111276627A CN113932613A CN 113932613 A CN113932613 A CN 113932613A CN 202111276627 A CN202111276627 A CN 202111276627A CN 113932613 A CN113932613 A CN 113932613A
- Authority
- CN
- China
- Prior art keywords
- kiln
- pipe
- air outlet
- outlet pipe
- air inlet
- 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
- 239000011449 brick Substances 0.000 title claims abstract description 30
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 239000003345 natural gas Substances 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000005329 float glass Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
The invention provides a connecting structure of a kiln nozzle brick and a kiln nozzle, and belongs to the technical field of float glass equipment. The kiln comprises a natural gas input pipe, an air inlet pipe, an air outlet pipe and a combustion head, wherein the air inlet pipe is sleeved outside the natural gas input pipe, the air outlet pipe and the combustion head are sleeved outside the air inlet pipe, the outlet of the natural gas input pipe is connected with the combustion head through a flaring, the flaring is of a conical tubular structure, the large-diameter end of the flaring faces the combustion head, the natural gas input pipe is connected with the air outlet pipe into a whole through the flaring, the air inlet pipe is communicated with the air outlet pipe at the flaring, a heat insulation cavity is formed between the air outlet pipe and the air inlet pipe, an air inlet hole is formed in the peripheral wall of the flaring, a jack allowing the air outlet pipe to be inserted is formed in the kiln wall, and a kiln brick is fixed on the air outlet pipe outside the heat insulation cavity. The invention has the advantages of long service life, long maintenance period and the like.
Description
Technical Field
The invention belongs to the technical field of float glass equipment, and relates to a connecting structure of a kiln nozzle brick and a kiln nozzle.
Background
The melting furnace is one of three hot working equipments in the float glass production equipment. The melting process of the melting furnace mainly depends on the radiation heat transfer of a high-speed combustion spray gun to achieve the melting effect. Because of the production needs, the spray gun is in the burning state of not stopping gas, and the nozzle brick burns out the aggravation along with the increase of kiln age for a long time, influences flame state, kiln structure safety and receives the influence, mainly prolongs the live time through changing the nozzle brick at present, but the change process is wasted time and energy, influences the product quality cycle length.
The main reasons why kiln bricks are easily damaged at the nozzle are: the local heating temperature of the kiln bricks at the nozzle is higher than that of other parts and other kiln bricks, so that the kiln bricks at the nozzle have larger thermal stress and are easy to damage.
Disclosure of Invention
The invention aims to provide a kiln nozzle capable of prolonging the service life of a kiln nozzle brick aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to prolong the service life and the maintenance period of the kiln nozzle brick.
The purpose of the invention can be realized by the following technical scheme: the connecting structure of the kiln nozzle brick and the kiln nozzle is characterized by comprising a natural gas input pipe, an air inlet pipe, an air outlet pipe and a combustion head, wherein the air inlet pipe is sleeved outside the natural gas input pipe, the air outlet pipe is sleeved outside the air inlet pipe, the combustion head is connected with the outlet of the natural gas input pipe through a flaring, the flaring is of a conical tubular structure, the large-diameter end of the flaring faces the combustion head, the natural gas input pipe is connected with the air outlet pipe into a whole through the flaring, the air inlet pipe is communicated with the air outlet pipe at the flaring, a heat insulation cavity is formed between the air outlet pipe and the air inlet pipe, an air inlet hole is formed in the peripheral wall of the flaring, a jack allowing the air outlet pipe to be inserted into the jack is formed in the kiln wall, and the kiln brick is fixed on the air outlet pipe outside the heat insulation cavity.
Furthermore, the air outlet pipe positioned at the inner side of the kiln wall is detachably connected with a limiting ring, and the combustion head is detachably connected with a mounting seat.
Furthermore, the air outlet end of the air outlet pipe is provided with a valve, the air outlet amount is controlled by controlling the opening degree of the valve, and the air inlet amount entering the combustion head from the air inlet hole is further controlled.
Furthermore, the limiting ring is a metal piece, and the mounting seat is a ceramic piece.
The air-blower orders about high-speed air current and gets into flaring department by the intake pipe, because the inlet port on the flaring is just to the circulation direction of air current that admits air, makes partial air get into the combustion head to the realization with the mixture of natural gas, the air in the intake pipe is most by the terminal turn-back of intake pipe and get into the outlet duct, this partial gas is except cooling down to the kiln wall and the kiln brick in the outlet duct outside, has the effect that reduces the difference in temperature, this is because: the air flow begins to heat up rapidly at the tail end of the air inlet pipe, so far, the air flow can maintain a lower temperature, and after the air flow turns back to enter the air outlet pipe, the air flow is still in a heating state under the heating of the kiln wall, so that the temperature difference between the inner side and the outer side of the kiln brick positioned outside the air outlet pipe is relatively smaller, the temperature of the part, which is close to a combustion head, of the kiln brick and is most prone to damage is relatively lower, and the service life and the replacement cycle of the kiln brick can be effectively prolonged.
Drawings
Fig. 1 is a schematic perspective view of the kiln nozzle.
Fig. 2 is a schematic sectional structure diagram of the kiln nozzle.
Fig. 3 is a schematic structural view of the kiln nozzle in an installation state.
In the figure, 1, a natural gas input pipe; 2. an air inlet pipe; 3. an air outlet pipe; 4. flaring; 5. A thermally insulating cavity; 6. an air inlet; 7. a limiting ring; 8. a mounting seat; 9. a valve; 10. a kiln wall; 11. a kiln brick; 12. a burner head.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, fig. 2 and fig. 3, the kiln comprises a natural gas input pipe 1, an air inlet pipe 2 sleeved outside the natural gas input pipe 1, an air outlet pipe 3 and a burner 12 sleeved outside the air inlet pipe 2, the burner 12 is connected to the outlet of the natural gas input pipe 1 through a flared opening 4, the flared opening 4 is conical, and the large-diameter end faces the tubular structure of the burner 12, the natural gas input pipe 1 is connected with the air outlet pipe 3 into a whole through the flared opening 4, the air inlet pipe 2 is communicated with the air outlet pipe 3 at the flared opening 4, a heat insulation cavity 5 is formed between the air outlet pipe 3 and the air inlet pipe 2, an air inlet hole 6 is formed in the peripheral wall of the flared opening 4, a jack allowing the air outlet pipe 3 to be inserted is formed in the kiln wall 10, and the kiln brick 11 is fixed on the air outlet pipe 3 outside the heat insulation cavity 5.
The air outlet pipe 3 at the inner side of the kiln wall 10 is detachably connected with a limiting ring 7, the combustion head 12 is detachably connected with a mounting seat 8, the limiting ring 7 is a metal piece, and the mounting seat 8 is a ceramic piece.
The air outlet end of the air outlet pipe 3 is provided with a valve 9, the air outlet quantity is controlled by controlling the opening degree of the valve 9, and then the air inlet quantity entering the combustion head 12 from the air inlet hole 6 is controlled.
The air-blower orders about high-speed air current and gets into flaring 4 department by intake pipe 2, because inlet port 6 on flaring 4 is just to the circulation direction of the air current that admits air, makes partial air get into burner 12 to the realization is with the mixture of natural gas, the air in intake pipe 2 is most by 2 terminal turn-backs of intake pipe and get into outlet duct 3, this partial gas is except cooling down to kiln wall 10 and kiln brick 11 in the 3 outsides of outlet duct, has the effect that reduces the difference in temperature, this is because: the air flow starts to be heated rapidly at the tail end of the air inlet pipe 2, the air flow can be kept at a low temperature before the air flow enters the air outlet pipe 3, the air flow is still in a heating state under the heating of the kiln wall 10 after being turned back, the temperature difference between the inner side and the outer side of the kiln brick 11 positioned on the outer side of the air outlet pipe 3 is relatively small, the temperature of the part, which is most easily damaged, of the kiln brick 11 close to the combustion head 12 is relatively low, and the service life and the replacement period of the kiln brick 11 can be effectively prolonged.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (4)
1. A connecting structure of a kiln nozzle brick and a kiln nozzle is characterized by comprising a natural gas input pipe (1), an air inlet pipe (2) sleeved outside the natural gas input pipe (1), an air outlet pipe (3) sleeved outside the air inlet pipe (2) and a combustion head (12), wherein the outlet of the natural gas input pipe (1) is connected with the combustion head (12) through a flaring (4), the flaring (4) is of a conical tubular structure with a large-diameter end facing the combustion head (12), the natural gas input pipe (1) is connected with the air outlet pipe (3) into a whole through the flaring (4), the air inlet pipe (2) is communicated with the air outlet pipe (3) at the flaring (4), a heat insulation cavity (5) is formed between the air outlet pipe (3) and the air inlet pipe (2), an air inlet hole (6) is formed in the peripheral wall of the flaring (4), and a jack allowing the air outlet pipe (3) to be inserted is formed in the kiln wall (10), the kiln brick (11) is fixed on the air outlet pipe (3) outside the heat insulation cavity (5).
2. A connection structure of a nozzle brick and a nozzle of a kiln according to claim 1, characterized in that a limiting ring (7) is detachably connected to the outlet pipe (3) at the inner side of the kiln wall (10), and a mounting seat (8) is detachably connected to the burner head (12).
3. A connection structure of a nozzle brick and a nozzle of a kiln as claimed in claim 1 or 2, characterized in that the air outlet end of the air outlet pipe (3) is provided with a valve (9), the air outlet amount is controlled by controlling the opening degree of the valve (9), and further the air inlet amount entering the combustion head (12) from the air inlet hole (6) is controlled.
4. The connecting structure of the nozzle brick of the kiln and the nozzle of the kiln as claimed in claim 2, wherein the limiting ring (7) is a metal piece, and the mounting seat (8) is a ceramic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276627.6A CN113932613A (en) | 2021-10-29 | 2021-10-29 | Connecting structure of kiln nozzle brick and kiln nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276627.6A CN113932613A (en) | 2021-10-29 | 2021-10-29 | Connecting structure of kiln nozzle brick and kiln nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113932613A true CN113932613A (en) | 2022-01-14 |
Family
ID=79285106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111276627.6A Pending CN113932613A (en) | 2021-10-29 | 2021-10-29 | Connecting structure of kiln nozzle brick and kiln nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113932613A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446579A (en) * | 1987-08-14 | 1989-02-21 | Nippon Steel Corp | Dipping lance |
| CN1449364A (en) * | 2000-07-05 | 2003-10-15 | 科特布斯玻璃设计及技术有限责任公司 | Nitrogen oxide reduced introduction of fuel in combustion air ports of a glass furnace |
| CN101936529A (en) * | 2010-09-29 | 2011-01-05 | 中国石油化工股份有限公司 | Sidewall gas burner capable of reducing emission of nitrogen oxides |
| JP2011012863A (en) * | 2009-06-30 | 2011-01-20 | Electric Power Dev Co Ltd | Burner |
| JP2014189428A (en) * | 2013-03-26 | 2014-10-06 | Osaka Gas Co Ltd | Glass melting furnace |
| JP2017062085A (en) * | 2015-09-25 | 2017-03-30 | 新日鐵住金株式会社 | Burner |
| CN210219761U (en) * | 2019-05-17 | 2020-03-31 | 洛阳托普热能技术有限公司 | Low NOx natural gas burner for aluminum melting furnace |
| CN111484022A (en) * | 2019-12-23 | 2020-08-04 | 浙江精功新材料技术有限公司 | White carbon black combustion furnace structure |
| CN211260798U (en) * | 2019-12-11 | 2020-08-14 | 叙永郎酒东方玻璃有限公司 | Burning gun for kiln |
| CN112747308A (en) * | 2019-10-30 | 2021-05-04 | 霍尼韦尔国际公司 | Regenerative gas burner for industrial applications and method for operating the same |
-
2021
- 2021-10-29 CN CN202111276627.6A patent/CN113932613A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446579A (en) * | 1987-08-14 | 1989-02-21 | Nippon Steel Corp | Dipping lance |
| CN1449364A (en) * | 2000-07-05 | 2003-10-15 | 科特布斯玻璃设计及技术有限责任公司 | Nitrogen oxide reduced introduction of fuel in combustion air ports of a glass furnace |
| JP2011012863A (en) * | 2009-06-30 | 2011-01-20 | Electric Power Dev Co Ltd | Burner |
| CN101936529A (en) * | 2010-09-29 | 2011-01-05 | 中国石油化工股份有限公司 | Sidewall gas burner capable of reducing emission of nitrogen oxides |
| JP2014189428A (en) * | 2013-03-26 | 2014-10-06 | Osaka Gas Co Ltd | Glass melting furnace |
| JP2017062085A (en) * | 2015-09-25 | 2017-03-30 | 新日鐵住金株式会社 | Burner |
| CN210219761U (en) * | 2019-05-17 | 2020-03-31 | 洛阳托普热能技术有限公司 | Low NOx natural gas burner for aluminum melting furnace |
| CN112747308A (en) * | 2019-10-30 | 2021-05-04 | 霍尼韦尔国际公司 | Regenerative gas burner for industrial applications and method for operating the same |
| CN211260798U (en) * | 2019-12-11 | 2020-08-14 | 叙永郎酒东方玻璃有限公司 | Burning gun for kiln |
| CN111484022A (en) * | 2019-12-23 | 2020-08-04 | 浙江精功新材料技术有限公司 | White carbon black combustion furnace structure |
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