CN110848680A - Semi-premixed natural gas pipe type combustor - Google Patents
Semi-premixed natural gas pipe type combustor Download PDFInfo
- Publication number
- CN110848680A CN110848680A CN201910961001.5A CN201910961001A CN110848680A CN 110848680 A CN110848680 A CN 110848680A CN 201910961001 A CN201910961001 A CN 201910961001A CN 110848680 A CN110848680 A CN 110848680A
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- Prior art keywords
- pipe
- air inlet
- natural gas
- burner
- semi
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- 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
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- 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
- F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
-
- 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
-
- 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
- F23D14/62—Mixing devices; Mixing tubes
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- 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 discloses a semi-premixed natural gas pipe type burner which comprises an outer pipe, wherein one end of the outer pipe is fixedly connected with the side of one side of an air inlet hole plate, a second mixing cavity is formed between a second premixing pipe and a natural gas inlet pipe, and a first mixing cavity is formed between the first premixing pipe and the second premixing pipe; this half mixes formula natural gas tubular burner in advance cools off the burning burner through air intake pipe and flow distribution plate, and the probability that the flame hole through steady flame cover one side can reduce the combustor tempering phenomenon and appear simultaneously to guarantee the life of half mixes formula natural gas tubular burner in advance.
Description
Technical Field
The invention relates to a combustor, in particular to a semi-premixed natural gas tubular combustor.
Background
The burner is a general term for a device for ejecting fuel and air in a certain manner to perform mixed combustion. The burners are classified into industrial burners, civil burners and special burners according to types and application fields. Is made of corrosion-resistant and high-temperature-resistant materials such as stainless steel or metallic titanium. The burner functions to atomize the sample by flame combustion. The atomized test solution enters a burner, and a large amount of ground state atoms, and part of excited state atoms, ions and molecules are generated through the processes of drying, melting, evaporation, dissociation and the like under the action of flame temperature and flame atmosphere. A well-designed burner should have the properties of high atomization efficiency, low noise and stable flame so as to ensure higher absorption sensitivity and measurement precision. A slit burner is commonly used in atomic absorption spectroscopy to generate atomic vapor. The length and width of the burner gap are different according to the type of the used fuel gas and the combustion-supporting gas, and the applicable fuel gas and the combustion-supporting gas are marked on the common burner.
The semi-premixing natural gas pipe type burner provides mixing space and time for natural gas and combustion-supporting air before combustion, but the existing semi-premixing natural gas pipe type burner does not fully mix the natural gas and the combustion-supporting air and then burns, so that the problems of low combustion flame temperature and low heat efficiency of natural gas combustion are caused; the existing semi-premixing natural gas pipe type combustor burns natural gas and combustion air after being mixed, so that the tempering phenomenon can occur, and the service life of the semi-premixing natural gas pipe type combustor is shortened.
Disclosure of Invention
The invention aims to provide a semi-premixed natural gas pipe type combustor, which solves the problem that the natural gas and combustion air are not mixed completely in the existing semi-premixed natural gas pipe type combustor in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a semi-premixing natural gas tube burner comprises an outer tube, one end of the outer tube is fixedly connected with the side of one side of an air inlet hole plate, the middle of one side of the air inlet hole plate is connected with one end of a natural gas inlet tube in an inserting mode, a second premixing tube is fixedly arranged outside the natural gas inlet tube, one end of the second premixing tube is fixedly connected with one side of the air inlet hole plate, the other end of the second premixing tube is provided with two air outlet holes, a second mixing cavity is formed between the second premixing tube and the natural gas inlet tube, a first premixing tube is fixedly arranged outside the second premixing tube, one end of the first premixing tube is fixedly connected with one side of the air inlet hole plate, the other end of the first premixing tube is connected with one side of a combustion burner in a clamping mode, a flow distribution plate is sleeved on one side of the outer wall of the combustion burner, and a first mixing cavity is formed between the first premixing tube and the second premixing tube, a plurality of first air inlet holes are formed in the side of the other side of the air inlet hole plate, one ends of the first air inlet holes are communicated with the inside of the first mixing cavity, a plurality of second air inlet holes are formed in the middle of the other side of the air inlet hole plate, one ends of the second air inlet holes are communicated with the inside of the second mixing cavity, an air inlet pipe is sleeved on one side of the outer wall of the outer pipe, and an air inlet of the air inlet pipe is communicated with the inside of the outer pipe.
As a preferred technical scheme of the invention, the top of the other side of the air inlet hole plate is provided with a fire observation hole, and one end of the fire observation hole is communicated with the inside of the outer pipe.
As a preferred technical scheme of the invention, the other side of the outer wall of the outer pipe is sleeved with a flame stabilizing cover, the middle part of one side of the flame stabilizing cover is provided with flame holes, and the positions of the flame holes and the positions of the combustion nozzles are arranged in a one-to-one correspondence manner.
As a preferred technical scheme of the invention, the side of one side of the flame stabilizing cover is provided with a plurality of reinforcing air holes.
As a preferable technical scheme of the invention, the outer wall of the outer pipe is coated with a heat insulation coating, and the heat insulation coating is made of epoxy resin.
Compared with the prior art, the invention has the beneficial effects that: the semi-premixed natural gas pipe type burner enables natural gas and primary combustion-supporting air to be fully mixed through the second mixing cavity, enables the natural gas and secondary combustion-supporting air to be fully mixed through the first mixing cavity, enables the natural gas to be fully combusted, and accordingly guarantees the temperature of combustion flame and the thermal efficiency of natural gas combustion; this half mixes formula natural gas tubular burner in advance cools off the burning burner through air intake pipe and flow distribution plate, and the probability that the flame hole through steady flame cover one side can reduce the combustor tempering phenomenon and appear simultaneously to guarantee the life of half mixes formula natural gas tubular burner in advance.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic structural view of the air inlet aperture plate of the present invention;
FIG. 3 is a schematic structural view of a flame holder according to the present invention.
In the figure: 1. an outer tube; 2. a first premix tube; 3. a second premix tube; 4. an air outlet; 5. a first mixing chamber; 6. a second mixing chamber; 7. a natural gas inlet pipe; 8. an air inlet pipe; 9. an air inlet hole plate; 10. a fire observation hole; 11. a combustion burner; 12. a flow distribution plate; 13. a flame stabilizing cover; 14. a first air inlet; 15. a second air inlet; 16. a flame hole; 17. the air holes are reinforced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a semi-premixed natural gas tube burner, including an outer tube 1, one end of the outer tube 1 is fixedly connected to a side of one side of an air inlet hole plate 9, a middle portion of one side of the air inlet hole plate 9 is connected to one end of a natural gas inlet tube 7 in a penetrating manner, a second premix tube 3 is fixedly disposed outside the natural gas inlet tube 7, one end of the second premix tube 3 is fixedly connected to one side of the air inlet hole plate 9, the other end of the second premix tube 3 is provided with two air outlet holes 4, a second mixing cavity 6 is formed between the second premix tube 3 and the natural gas inlet tube 7, a first premix tube 2 is fixedly disposed outside the second premix tube 3, one end of the first premix tube 2 is fixedly connected to one side of the air inlet hole plate 9, the other end of the first premix tube 2 is connected to one side of a combustion burner 11 in a clamping manner, a splitter plate 12 is sleeved on one side of an outer wall of, a first mixing cavity 5 is formed between the first premixing pipe 2 and the second premixing pipe 5, a plurality of first air inlet holes 14 are formed in the side of the other side of the air inlet hole plate 9, one ends of the first air inlet holes 14 are communicated with the interior of the first mixing cavity 5, a plurality of second air inlet holes 15 are formed in the middle of the other side of the air inlet hole plate 9, one ends of the second air inlet holes 15 are communicated with the interior of the second mixing cavity 6, an air inlet pipe 8 is sleeved on one side of the outer wall of the outer pipe 1, and an air inlet of the air inlet pipe 8 is communicated with the interior of the outer pipe 1; the top of the other side of the air inlet hole plate 9 is provided with a fire observation hole 10, and one end of the fire observation hole 10 is communicated with the inside of the outer tube 1, so that the combustion burner can be observed in real time; the other side of the outer wall of the outer pipe 1 is sleeved with a flame stabilizing cover 13, the middle part of one side of the flame stabilizing cover 13 is provided with flame holes 16, and the positions of the flame holes 16 and the positions of the combustion nozzles 11 are arranged in a one-to-one correspondence manner, so that the tempering probability of the combustor can be reduced; the side of one side of the flame stabilizing cover 13 is provided with a plurality of strengthening air holes 17 which can strengthen the mixing of natural gas and combustion-supporting air so as to improve the heat efficiency of the natural gas combustion; the outer wall of the outer pipe 1 is coated with a heat insulation coating, and the heat insulation coating is made of epoxy resin, so that workers are prevented from being scalded by a combustor.
When the semi-premixing natural gas pipe type burner is used in detail, primary flame-retardant air enters the second mixing cavity 6 through the second air inlet hole 15, natural gas enters the second mixing cavity 6 through the natural gas inlet pipe 7, the primary flame-retardant air and the natural gas are fully mixed, the gas mixed by the natural gas and the primary flame-retardant air enters the first mixing cavity 5 through the gas outlet hole 4, secondary flame-retardant air enters the first mixing cavity 5 through the first air inlet hole 14, the mixed gas and secondary combustion-supporting air are fully mixed for the second time, so that the natural gas and the combustion-supporting air are thoroughly mixed to ensure that the natural gas is fully combusted in the combustion burner 11, the temperature of combustion flame and the thermal efficiency of natural gas combustion are improved, and when the natural gas is combusted, cooling air enters a space between the outer pipe 1 and the first premixing pipe 2 through the air inlet pipe 8, then the flame is divided into a plurality of strands of small cooling air by the flow dividing plate 12 to cool the combustion burner 11, and the flame of the combustion burner 11 is ejected out through the flame holes 16 at one end of the flame stabilizing cover 13, so that the service life of the burner is prevented from being reduced due to the backfire phenomenon of the burner.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a half mixes formula natural gas tubular burner in advance, includes outer tube (1), its characterized in that, the avris fixed connection of the one end of outer tube (1) and air inlet hole board (9) one side, the middle part of air inlet hole board (9) one side is alternated with the one end of natural gas intake pipe (7) and is connected, the external fixation of natural gas intake pipe (7) is equipped with second premix pipe (3), one end of second premix pipe (3) and one side fixed connection of air inlet hole board (9), two ventholes (4) have been seted up to the other end of second premix pipe (3), form second hybrid chamber (6) between second premix pipe (3) and natural gas intake pipe (7), the external fixation of second premix pipe (3) is equipped with first premix pipe (2), one end of first premix pipe (2) and one side fixed connection of air inlet hole board (9), the other end of the first premixing pipe (2) is clamped and connected with one side of the combustion burner (11), a flow distribution plate (12) is sleeved on one side of the outer wall of the combustion burner (11), a first mixing cavity (5) is formed between the first premixing pipe (2) and the second premixing pipe (5), a plurality of first air inlet holes (14) are arranged on the side of the other side of the air inlet hole plate (9), one ends of the first air inlet holes (14) are communicated with the interior of the first mixing cavity (5), a plurality of second air inlet holes (15) are arranged in the middle of the other side of the air inlet hole plate (9), one ends of the second air inlet holes (15) are communicated with the inside of the second mixing cavity (6), an air inlet pipe (8) is sleeved on one side of the outer wall of the outer pipe (1), and the air inlet of the air inlet pipe (8) is communicated with the inside of the outer pipe (1).
2. A semi-premixed natural gas tubular burner as claimed in claim 1, wherein: the top of the other side of the air inlet hole plate (9) is provided with a fire observation hole (10), and one end of the fire observation hole (10) is communicated with the inside of the outer tube (1).
3. A semi-premixed natural gas tubular burner as claimed in claim 1, wherein: the flame stabilizing cover (13) is sleeved on the other side of the outer wall of the outer tube (1), flame holes (16) are formed in the middle of one side of the flame stabilizing cover (13), and the positions of the flame holes (16) and the positions of the combustion nozzles (11) are arranged in a one-to-one correspondence mode.
4. A semi-premixed natural gas tubular burner as claimed in claim 3, wherein: the side of one side of the flame stabilizing cover (13) is provided with a plurality of reinforcing air holes (17).
5. A semi-premixed natural gas tubular burner as claimed in claim 1, wherein: the outer wall of the outer pipe (1) is coated with a heat insulation coating, and the heat insulation coating is made of epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910961001.5A CN110848680A (en) | 2019-10-11 | 2019-10-11 | Semi-premixed natural gas pipe type combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910961001.5A CN110848680A (en) | 2019-10-11 | 2019-10-11 | Semi-premixed natural gas pipe type combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110848680A true CN110848680A (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910961001.5A Pending CN110848680A (en) | 2019-10-11 | 2019-10-11 | Semi-premixed natural gas pipe type combustor |
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| Country | Link |
|---|---|
| CN (1) | CN110848680A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664449A (en) * | 2020-05-06 | 2020-09-15 | 广东合胜厨电科技有限公司 | Upper air inlet ultra-high power household stove burner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743727A (en) * | 1997-01-21 | 1998-04-28 | Burner Systems International, Inc. | Premixed gas burner |
| CN102537961A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Multi-nozzle semi-premixed gas burner |
| CN102759101A (en) * | 2011-04-25 | 2012-10-31 | 佛山市启迪节能科技有限公司 | Working method and device of pre-mixing type secondary combustor |
| CN202733892U (en) * | 2012-06-14 | 2013-02-13 | 成都昊地科技有限责任公司 | Semi-pre-mixed-type secondary combustor energy-saving device |
| CN103542408A (en) * | 2012-07-10 | 2014-01-29 | 上海天纳克排气系统有限公司 | Semi-premixing natural gas pipe type combustor |
| CN106705039A (en) * | 2017-03-06 | 2017-05-24 | 中国华能集团清洁能源技术研究院有限公司 | Low-load stable combustion rotational flow type burner |
-
2019
- 2019-10-11 CN CN201910961001.5A patent/CN110848680A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743727A (en) * | 1997-01-21 | 1998-04-28 | Burner Systems International, Inc. | Premixed gas burner |
| CN102537961A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Multi-nozzle semi-premixed gas burner |
| CN102759101A (en) * | 2011-04-25 | 2012-10-31 | 佛山市启迪节能科技有限公司 | Working method and device of pre-mixing type secondary combustor |
| CN202733892U (en) * | 2012-06-14 | 2013-02-13 | 成都昊地科技有限责任公司 | Semi-pre-mixed-type secondary combustor energy-saving device |
| CN103542408A (en) * | 2012-07-10 | 2014-01-29 | 上海天纳克排气系统有限公司 | Semi-premixing natural gas pipe type combustor |
| CN106705039A (en) * | 2017-03-06 | 2017-05-24 | 中国华能集团清洁能源技术研究院有限公司 | Low-load stable combustion rotational flow type burner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664449A (en) * | 2020-05-06 | 2020-09-15 | 广东合胜厨电科技有限公司 | Upper air inlet ultra-high power household stove burner |
| CN111664449B (en) * | 2020-05-06 | 2021-08-03 | 广东合胜厨电科技有限公司 | Upper air inlet ultra-high power household stove burner |
| WO2021223341A1 (en) * | 2020-05-06 | 2021-11-11 | 广东合胜厨电科技有限公司 | Household cooking stove combustor having upper wind intake and ultra large power |
| US11976814B2 (en) | 2020-05-06 | 2024-05-07 | Guangdong Horisun Kitchen Appliances Technology Co., Ltd. | Household stove burner with upper intake air and super-high power |
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Application publication date: 20200228 |