CN201093500Y - Natural gas combustion nozzle capable of adjusting flame - Google Patents

Natural gas combustion nozzle capable of adjusting flame Download PDF

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Publication number
CN201093500Y
CN201093500Y CNU2007200397399U CN200720039739U CN201093500Y CN 201093500 Y CN201093500 Y CN 201093500Y CN U2007200397399 U CNU2007200397399 U CN U2007200397399U CN 200720039739 U CN200720039739 U CN 200720039739U CN 201093500 Y CN201093500 Y CN 201093500Y
Authority
CN
China
Prior art keywords
natural gas
wind cover
wind
burner
movable
Prior art date
Application number
CNU2007200397399U
Other languages
Chinese (zh)
Inventor
盛立新
曹强
Original Assignee
中冶华天工程技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中冶华天工程技术有限公司 filed Critical 中冶华天工程技术有限公司
Priority to CNU2007200397399U priority Critical patent/CN201093500Y/en
Application granted granted Critical
Publication of CN201093500Y publication Critical patent/CN201093500Y/en

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Abstract

The utility model discloses a flame-adjustable natural gas nozzle, comprising a sleeving (1), an air duct (2), a natural gas nozzle (3), a back board (4), a nozzle shell (6) and other components, wherein, a centre wind pipe (5) is inserted in the natural gas nozzle; a fixed wind cover (7) and a movable wind cover (8) are arranged outside the natural gas nozzle (3); the structure of the movable wind cover (8) is of a large-and-small-reducer pipe, wherein, a small diameter pipe (8a) is sleeved on the natural gas nozzle (3) close to the outer side of the back board (4), while a large diameter pipe (8b) is sleeved on the fixed wind cover (7); a rectangular wind gap (9) is arranged at the overlapped part of the fixed wind cover (7) and the movable wind cover (8). A wind cover ring (10) and a fixed ring (11) are arranged on the small diameter pipe (8a) of the movable wind cover; two handles (12) are arranged on the wind cover ring (10); a bolt (13) is arranged in the fixed ring (11) to fix the movable wind cover. The movable wind cover is driven to rotate through the rotation of the handles so as to change the ratio of the primary air to the secondary air, thereby adjusting the length of the flame, thus, the nozzle has simple structure, high adjustment precision and can keep stable combustion when the heat capacity changes much.

Description

A kind of adjustable flame natural gas burner
Technical field
The utility model relates to and a kind ofly is used for various industrial furnaces as the adjustable flame natural gas burner of heating furnace, tunnel cave, rotary kiln, heat-treatment furnace etc.
Background technology
Along with primary energy day is becoming tight, and the enhancing day by day of environmental protection consciousness, the energy utilization rate maximization is the important topic that we face with reducing pollutant emission effectively.In the combustion system of industrial furnace, burner is being updated.Under the needed thermic load condition of industrial furnace, should guarantee the completing combustion of fuel; Guarantee smooth combustion in the heat capacity excursion of regulation again, make flame that certain profile and rigidity be arranged, improve the steel billet temperature uniformity.
Existing adjustable flame natural gas burner comprises parts such as sleeve pipe, air hose, natural gas jet pipe; In the natural gas jet pipe, be provided with central air hose,, reach the purpose of regulating flame rigidity by being connected on an amount that ball valve is regulated center wind on the central air hose; Be provided with butterfly valve in burner inside, regulate the allocation proportion of control primary and secondary air by butterfly valve, reach the purpose of regulating the length of flame with this,, and keep the burner length of flame stable though this adjustable flame natural gas burner can be regulated the primary and secondary air ratio, but structure more complicated, cause drag losses bigger, and butterfly valve controls underaction to air quantity, degree of regulation is not high, under the less situation of burner thermic load, the burner combustion less stable.In addition, this adjustable flame natural gas burner does not have interior burner block, and its natural gas spout is located at the burner block place that joins with furnace wall, and natural gas and wind abundant premix in burner has certain influence to burning quality.
The utility model content
The purpose of this utility model just provide a kind of simple in structure, but degree of regulation is high, the adjustable flame natural gas burner of smooth combustion still when heat capacity changes greatly.
For achieving the above object, adjustable flame natural gas burner of the present utility model comprises parts such as sleeve pipe, air hose, natural gas jet pipe, backboard, burner shell, in the natural gas jet pipe, be inserted with central air hose, its structural feature is: at natural gas jet pipe peripheral hardware fixedly wind cover and movable wind cover are arranged, movable wind nested structure is big or small reducer pipe, narrow tube is enclosed near on the natural gas jet pipe outside the backboard, large diameter pipe is enclosed within fixedly that wind puts, and overlaps lap at fixedly wind cover and movable wind and has a rectangle air port.
Wherein on movable wind cover narrow tube, be provided with wind lasso and retainer plate, on the wind lasso, be provided with two handles, be provided with bolting activity wind cover in the retainer plate.
After adopting such structure, by the rotation of rotating handles drive activity wind cover, and fixedly the wind cover is motionless, change the rectangle air port registration size of overlapping lap at fixing wind cover and movable wind, thereby regulate the primary air air quantity, that is to say the ratio of mainly rotating wind of change, secondary wind, reach the purpose of regulating the length of flame by rotating handles drive activity wind cover.
The utility model structure compared with prior art its advantageous effect is as follows:
1, adopt the wind nested structure, make the burner internal structure simpler, air drag is littler, and to air preheating temperature without limits, fault rate is lower;
2, regulate rectangle air port registration size by the rotation of rotating handles drive activity wind cover, regulation and control are convenient, and the degree of regulation height is particularly suitable for low discharge and regulates, and helps improving burning quality simultaneously.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the cutaway view of adjustable flame natural gas burner of the present utility model;
Fig. 2 is the cutaway view of adjustable flame natural gas burner shown in Figure 1 along the A-A direction.
The specific embodiment
As can be seen from Figure 1, adjustable flame natural gas burner of the present utility model comprises parts such as sleeve pipe 1, air hose 2, natural gas jet pipe 3, backboard 4, burner shell 6, in natural gas jet pipe 3, be inserted with central air hose 5, outside natural gas jet pipe 3, be provided with fixedly wind cover 7 and movable wind cover 8, it is big or small reducer pipe that movable wind overlaps 8 structures, its narrow tube 8a is enclosed near on the natural gas jet pipe 3 in backboard 4 outsides, large diameter pipe 8 bBe enclosed within fixedly on the wind cover 7, fixing wind overlap 7 and movable wind overlap 8 laps and have a rectangle air port 9.Fixedly wind overlaps 7 one ends and is fixed on the burner shell 6 by flange 14, and burner block 15 in being provided with in the burner shell 6 has burning galleries 16 in the middle of the interior burner block 15, and the spout 17 of natural gas jet pipe 3 is positioned at burning gallery 16 close air hose 2 inboards.
From Fig. 1 and Fig. 2 as can be known, wherein at movable wind cover narrow tube 8 aBe provided with wind lasso 10 and retainer plate 11, on wind lasso 10, be provided with two handles 12, be provided with bolt 13 fixing movable wind covers 8 in the retainer plate 11.
The adjustable flame natural gas burner course of work of the present utility model is: natural gas is entered by sleeve pipe 1, with ejection in the center nozzle 18 of the primary air that enters rectangle air port 9 from air hose 2 in burning gallery 16.The secondary combustion air of the another part that enters from air hose 2 is from six uniform circular spouts 19 ejections of interior burner block 15, arrives in the stove mixed firing burning with the mist of burning gallery 16 ejections.The adjusting of primary air inlet, be by 8 rotations of rotating handles 12 drive activity wind cover, and fixedly wind overlaps 7 motionless, change overlaps at fixing wind cover 7 and movable wind that rectangle air port 9 registration sizes that 8 laps offer realize, when two air ports overlap fully, this moment primary air inlet maximum, when two air ports did not overlap the position, this moment, the primary air inlet was zero.Air quantity is regulated and is finished, and the bolt 13 that is provided with in the retainer plate 11 is tightened, fixing movable wind cover 8.In natural gas jet pipe 3, insert the rigidity that central air hose 5 is regulated flame, the shape of control flame, the introducing of center wind simultaneously, natural gas and primary air are played an ejector action, increasing is to the disturbance of primary air and natural gas, it is more abundant that primary air and natural gas are mixed in burner, and the combustion air that its subcenter wind is introduced is the premix resultant of fuel metering partly also; The spout 17 of natural gas jet pipe 3 is positioned at burning gallery 16 near air hose 2 inboards, the position of spout 17 in burner of so reasonable arrangement natural gas jet pipe 3, play injection to a wind, reach purpose, make partly-premixed burning more reasonable at inner fully mixed gas of burner and a wind.
The partly-premixed combustion mode of closing that makes owing to this burner employing, because the speed of combustion reaction depends primarily on the degree that mixes of fuel and combustion air, and the length of flame depends primarily on the speed of combustion reaction, react fast more, flame is short more, therefore then flame is long more on the contrary, regulates the main means that wind and the sendout of secondary wind play the adjusting length of flame.
In sum, the utility model adopts the wind nested structure, makes the burner internal structure simpler, and air drag is littler, and to air preheating temperature without limits, fault rate is lower; Regulate rectangle air port registration size by the rotation of rotating handles drive activity wind cover, regulation and control are convenient, and the degree of regulation height is particularly suitable for low discharge and regulates, and helps improving burning quality simultaneously.

Claims (3)

1. adjustable flame natural gas burner, comprise sleeve pipe (1), air hose (2), natural gas jet pipe (3), backboard (4), burner shell (6) parts, in natural gas jet pipe (3), be inserted with central air hose (5), it is characterized in that: outside natural gas jet pipe (3), be provided with fixedly wind cover (7) and movable wind cover (8), movable wind cover (8) structure is big or small reducer pipe, its narrow tube (8a) is enclosed near on the natural gas jet pipe (3) outside the backboard (4), large diameter pipe (8b) is enclosed within fixedly on the wind cover (7), in that fixedly wind cover (7) and movable wind cover (8) lap have a rectangle air port (9).
2. adjustable flame natural gas burner according to claim 1, it is characterized in that: the narrow tube (8b) of described movable wind cover (8) is provided with wind lasso (10) and retainer plate (11), on wind lasso (10), be provided with two handles (12), be provided with the fixing movable wind cover (8) of bolt (13) in the retainer plate (11).
3. adjustable flame natural gas burner according to claim 1, it is characterized in that: described fixedly wind cover (7) one ends are fixed on the burner shell (6) by flange (14), be provided with interior burner block (15) in the burner shell (6), have burning gallery (16) in the middle of the interior burner block (15), the spout (17) of natural gas jet pipe (3) is positioned at burning gallery (16) near air hose (2) inboard.
CNU2007200397399U 2007-06-07 2007-06-07 Natural gas combustion nozzle capable of adjusting flame CN201093500Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200397399U CN201093500Y (en) 2007-06-07 2007-06-07 Natural gas combustion nozzle capable of adjusting flame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200397399U CN201093500Y (en) 2007-06-07 2007-06-07 Natural gas combustion nozzle capable of adjusting flame

Publications (1)

Publication Number Publication Date
CN201093500Y true CN201093500Y (en) 2008-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200397399U CN201093500Y (en) 2007-06-07 2007-06-07 Natural gas combustion nozzle capable of adjusting flame

Country Status (1)

Country Link
CN (1) CN201093500Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101881446A (en) * 2009-05-08 2010-11-10 德阳思远重工有限公司 High-rate burner capable of adjusting air inlet speed
CN102141247A (en) * 2011-04-13 2011-08-03 中冶京诚工程技术有限公司 Flame adjusting burner of soaking pit furnace
CN103398379A (en) * 2013-07-24 2013-11-20 中冶华天工程技术有限公司 Oxygen-enriched burner
CN103453526A (en) * 2013-08-27 2013-12-18 青岛聚蚨源机电有限公司 Combustor with automatic air quantity control function
CN104748118A (en) * 2015-01-30 2015-07-01 中国东方电气集团有限公司 Rotational-flow-adjustable gas burner
CN109439342A (en) * 2018-11-28 2019-03-08 鞍钢集团工程技术有限公司 A kind of liquefied natural gas furnace system and process

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101881446A (en) * 2009-05-08 2010-11-10 德阳思远重工有限公司 High-rate burner capable of adjusting air inlet speed
CN101881446B (en) * 2009-05-08 2014-07-09 德阳思远重工有限公司 High-rate burner capable of adjusting air inlet speed
CN102141247A (en) * 2011-04-13 2011-08-03 中冶京诚工程技术有限公司 Flame adjusting burner of soaking pit furnace
CN103398379A (en) * 2013-07-24 2013-11-20 中冶华天工程技术有限公司 Oxygen-enriched burner
CN103453526A (en) * 2013-08-27 2013-12-18 青岛聚蚨源机电有限公司 Combustor with automatic air quantity control function
CN104748118A (en) * 2015-01-30 2015-07-01 中国东方电气集团有限公司 Rotational-flow-adjustable gas burner
CN104748118B (en) * 2015-01-30 2017-02-22 中国东方电气集团有限公司 Rotational-flow-adjustable gas burner
CN109439342A (en) * 2018-11-28 2019-03-08 鞍钢集团工程技术有限公司 A kind of liquefied natural gas furnace system and process
CN109439342B (en) * 2018-11-28 2020-12-01 鞍钢集团工程技术有限公司 Liquefied natural gas oven system and process method

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: Nanjing Industrial Furnace Co., Ltd., HTC

Assignor: Zhongye Huatian Engineering Technology Co., Ltd.

Contract record no.: 2010320000751

Denomination of utility model: Natural gas combustion nozzle capable of adjusting flame

Granted publication date: 20080730

License type: Exclusive License

Record date: 20100617

CX01 Expiry of patent term

Granted publication date: 20080730

CX01 Expiry of patent term