CN200975667Y

CN200975667Y - Self-heating fire nozzle

Info

Publication number: CN200975667Y
Application number: CN 200620200826
Authority: CN
Inventors: 潘小龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-09
Filing date: 2006-10-09
Publication date: 2007-11-14
Anticipated expiration: 2016-10-09

Abstract

The utility model relates to an accessory jet burner of a combustor, in particular to a self heated jet burner. The utility model comprises a jet burner inner tube, a heating facility, an insulation external tube and a flame blended device, wherein the jet burner inner tube is in a hollow tube structure; the heating facility is arranged between the jet burner inner tube and the insulation external tube to used for heating the jet burner inner tube whose centre can choose the flame blended device. The utility model can be positioned on the heating component within the jet burner to make jet burner other than the flame of the combustor to heat up the jet burner to a certain temperature. The temperature also can be controlled automatically and the heating temperature or controlling temperature must be higher than the temperature of kindling point. The jet burner that heated to a certain temperature can completely combust the flaming gas ejected by the combustor and the flame of combustion will not give off green or black smoke and carbon soot etc. The completely combusted flame can meet the heating requirements of the strict demanded work pieces or the materials.

Description

Self heats burner

Technical field

The utility model relates to the annex burner of burner, refers in particular to the burner that self can heat.

Background technology

Burner claims burner block again, is and the matching used product of combustor, and the effect of burner is the combustion space before the combustor burned flame enters burner hearth, generally is initial segment flame burning space.Be typically equipped with burner during the combustor burning, and burner is fixed on generally on the furnace wall, then relative fixed is on burner for combustor, and its burning head then inserts in the burner, and its insertion depth is generally looked concrete condition and determined.Up to the present, global burner function still is a traditional function, initial segment flame burning space just, the exhausted burner that does not have self heating efficiency.Combustor just is meant all burning machines of the automatic control of implementation such as fuel supply, igniting, flame detection, shutdown.The unlatching of combustor and to stop generally be by temperature controlled, that is to say, after combustor starts burning, if the temperature in heated object or space does not reach the upper limit of design temperature, combustor will burn always, prescribe a time limit if the temperature in heated object or space reaches and is higher than on the design temperature, combustor is automatic burn-out; After combustor was shut down, the temperature in heated object or space can slowly descend, and when the temperature in heated object or space is reduced to the lower limit of design temperature when following, combustor starts again and takes fire.A large amount of heating-keeping warm modes is opening, is stopping constantly to change the purpose that reaches heating or insulation under the state by combustor.When combustor burnt under following two kinds of situations, often incomplete combustion was easy to generate blue or green cigarette, black smoke or carbon black etc. in the combustion process.A kind of situation is: when combustor is in cold conditions (before starting burning, whole combustion system is in the normal temperature state and is called cold conditions) and initial start-up burning the time, because the temperature of the burner inner surface that the flame (mainly being meant combustion atmosphere) of the initial ejection of combustor is contacted is cold-state temperature (well below the ignition point of fuel oil or combustion gas), though flame can also burn, but flame is incomplete combustion often, can produce blue or green cigarette or black smoke or black carbon etc. in the combustion process.Another kind of situation is: when stove is in keeping warm mode; combustor is in out-stop-open-stops the mutual transition status of the not phase failure; if combustor is shut down and downtime is longer; the temperature of combustor burner will descend; when the temperature of burner is reduced to the ignition temperature of fuel combustion when following; if combustor starts burning once more (when the control temperature of combustor is reduced to the lower limit of design temperature when following; combustor will restart burning); the combustion flame of combustor can not burn again fully, same blue or green cigarette, black smoke or the carbon black etc. of producing in the combustion process.The fuel pure flame (not containing blue or green cigarette, black smoke or the carbon black etc. that produce in combustible component and the combustion process in the flame) that burning produces in combustor and self heating burner matches the supporting structure that forms is with a wide range of applications in process industries.Industrial common employing hot blast heated parts or material are as drying oven of aluminium aging furnace, industrial chemicals and medicine etc. etc.Because such stove (can not contain not the blue or green cigarette that produces in the flammable atmosphere of combustion and the combustion process to the purity requirement of hot blast is higher in the hot blast, black smoke or carbon black etc.), when adopting the supporting burning of combustor and traditional burner, combustor restarts when burning and often produces blue or green cigarette or black smoke or carbon black etc. in incomplete combustion and the combustion process in the combustion process in burning initial stage (cold conditions) or holding stage (hot) the gap combustion process, if this combustion flame directly mixes with air, will contain the blue or green cigarette that produces in imperfect combustion propellant composition and the combustion process in the gaseous mixture, black smoke or carbon black etc.After containing in combustion atmosphere and the combustion process flame that produces blue or green cigarette or black smoke or carbon black and air mixing, still contain in the gaseous mixture and do not fire composition and material compositions such as blue or green cigarette, black smoke and carbon black, therefore, the hot blast composition of its generation is impure, can not directly be used for heating workpiece or material with certain mass requirement.In order to overcome the above problems, generally all adopt heat-exchanging process on engineering or the equipment, heat exchanger just is installed on equipment.By heat exchanger, the part of the heat energy that combustor burning is produced is passed on to heated air, again by heated air heat workpiece or material.Though can guarantee the pure and quality of hot blast by heat exchanger heat exchange and heated air (hot blast), heat exchange efficiency very low (generally being lower than 35%), therefore, and heat exchange and heating in this way, the heat energy of the overwhelming majority are lost and have been slatterned.

Summary of the invention

The purpose of this utility model is improved, is innovated at shortcoming that exists in the background technology and problem, provide a kind of simple in structure, practical, efficiently self the heating burner.

The technical solution of the utility model is: construct and a kind of heater is arranged on the structure that the burner skin can preheat burner, it comprises burner inner core, heater, insulation urceolus, flame mixing arrangement, wherein the burner inner core is hollow tubular structure, heater is located between burner inner core and the insulation urceolus, be used to heat the burner inner core, the flame mixing arrangement can be selected in the center of burner inner core.

Self heating efficiency described in the utility model, can be by being installed in heating element heater in the burner with burner self, rather than by combustor flame combustion heating burner, be heated to certain temperature, specifically be meant the temperature in the space that inwall and burner inwall thereof with the contacted burner of combustor flame are surrounded, its temperature also can adopt temperature automatically controlled mode to control, and its heating-up temperature or control temperature must be higher than the ignition temperature of fuel.The burner that is heated to uniform temperature can be with the combustion atmosphere completing combustion of combustor ejection, and burned flame can not produce blue or green cigarette, black smoke or carbon black etc.The flame of this completing combustion can satisfy the heat request that adds that has comparatively the workpiece of being strict with or material.

Description of drawings

Fig. 1 is the structure diagram of one of the utility model embodiment

Fig. 2 is Figure 1A-A profile

Fig. 3 is two the structure diagram of the utility model embodiment

Fig. 4 is Fig. 3 B-B profile

Fig. 5 is the structure chart that the utility model installs the flame mixing arrangement additional

Fig. 6 is Fig. 5 C-C profile

Fig. 7 is the utility model temperature control and installs overcoat additional and the structural representation of flame mixing arrangement

Fig. 8 is Fig. 7 D-D profile

Fig. 9 is that the utility model uses structural representation

Figure 10 is Fig. 9 E-E profile

The specific embodiment

By Fig. 1 to 8 as can be known: the utility model comprises burner inner core (1), heater (2), insulation urceolus (3), flame mixing arrangement (10), wherein burner inner core (1) is hollow tubular structure, heater (2) is located between burner inner core (1) and the insulation urceolus (3), be used to heat burner inner core (1), flame mixing arrangement (10) can be selected in the center of burner inner core (1).

Burner inner core described in the utility model (1) is circular or square or oval or polygon.Described heater (2) adopts heating wire (4) heating, and heating wire (4) is located between burner inner core (1) and the insulation urceolus (3).Described heater (2) adopts the hot fluid heating, and burner inner core (1) is established a hot fluid heating space (5) with being incubated between the urceolus (3), and establishes a hot fluid urceolus (6) and will be incubated between urceolus (3) and the burner inner core (1) and separate, and is used for the hot fluid transmission.Described flame mixing arrangement (10) is arranged on the central authorities of burner inner core (1), and its center is the conehead shape, is used for diffusion and mixes flame.Burner inner core described in the utility model general with anti-ly wash away, high temperature resistant and conduct heat the refractory material manufacturing fast, calandria generally adopts heating wire, the heat-barrier material manufacturing that thermal-insulation coat generally adopts is high temperature resistant, have certain intensity and better heat-insulating property.Another kind of situation is, certain position in burner is provided with the flame mixing arrangement, the effect of flame mixing arrangement is just fully to stir and mix at burned flame in the burner, and the time of staying of proper extension flame in burner, purpose is to make the flame can completing combustion in burner.

By Fig. 5 to 7 as can be known, be installed in the bocca place of burner in the actual use of the utility model, wherein burner is fixed in the overcoat (7), and overcoat (7) one sides are provided with burner (9), electroheat pair (8) also inserts in the burner from overcoat (7) one sides, is used to measure temperature in the burner.The match working procedure of the supporting structure that forms of combustor and self heating burner is: at first, before the combustor unlatching work, earlier self heating burner is heated to operating temperature and insulation, afterwards, can starts combustor.The match effect of the supporting structure that forms of combustor and self heating burner is: no matter combustor is to start burning (cold conditions) first, still the again start burning (hot) of combustor in start-stop alternating state process in insulating process, the combustor burned flame all can burn fully, and burned flame is very pure.When the temperature of burner is heated to the above temperature of fuel ignition point, the flame that the combustor burning produces, can completing combustion in the burner that is heated to uniform temperature (the above temperature of the ignition point of fuel), because flame combustion is complete, do not produce blue or green cigarette, black smoke and carbon black etc. in the flame combustion process again, therefore, the purity height of flame mixes the mixing air (hot blast) that forms with air and generally can not pollute heated workpiece or material.Also do not pass through heat exchange operation (direct heat transfer) owing to produce the process of hot blast, therefore, its thermal efficiency reaches 100%.Therefore, adopt self heating burner technology, compare, can save heat energy about 70% with traditional heat exchange-mode of heating.

Embodiment described in the utility model only is the description that preferred implementation of the present utility model is carried out; be not that the utility model design and scope are limited; do not breaking away under the preceding topic of the utility model design philosophy; engineers and technicians make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.

Claims

1. one kind self is heated burner, it is characterized in that comprising burner inner core (1), heater (2), insulation urceolus (3), flame mixing arrangement (10), wherein burner inner core (1) is hollow tubular structure, heater (2) is located between burner inner core (1) and the insulation urceolus (3), be used to heat burner inner core (1), flame mixing arrangement (10) can be selected in the center of burner inner core (1).

2. according to claim 1 self the heating burner, it is characterized in that described burner inner core (1) is circular or square or oval or polygon.

3. self heating burner according to claim 1 is characterized in that described heater (2) adopts heating wire (4) heating, and heating wire (4) is located at burner inner core (1) and is incubated between the urceolus (3).

4. according to claim 1 self the heating burner, it is characterized in that described heater (2) adopts the hot fluid heating, establish a hot fluid heating space (5) between burner inner core (1) and the insulation urceolus (3), and establish a hot fluid urceolus (6) and will be incubated between urceolus (3) and the burner inner core (1) and separate, be used for the hot fluid transmission.

5. self heating burner according to claim 1 is characterized in that described flame mixing arrangement (10) is arranged on the central authorities of burner inner core (1), and its center is the conehead shape, is used for diffusion and mixes flame.