CN206191584U - Dimethyl ether combustor - Google Patents
Dimethyl ether combustor Download PDFInfo
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- CN206191584U CN206191584U CN201621113688.5U CN201621113688U CN206191584U CN 206191584 U CN206191584 U CN 206191584U CN 201621113688 U CN201621113688 U CN 201621113688U CN 206191584 U CN206191584 U CN 206191584U
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- dimethyl ether
- combustion
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Abstract
The utility model relates to a heating field especially relates to a dimethyl ether combustor. A dimethyl ether combustor, including combustor body, fuel shower nozzle, gas valve series spare, burner control system the combustor body includes: air -blower, hot blast blowpipe apparatus, air register, air -blower one end and hot blast blowpipe apparatus are linked together, the other end with the air register is linked together, the fuel shower nozzle includes: nozzle assembly, gas valve series spare, intake pipe, gas valve series spare is linked together with nozzle assembly through the intake pipe, nozzle assembly includes outer nozzle and central nozzle, outer nozzle and central nozzle are many orifices structure. This dimethyl ether combustor has overcome the dimethyl ether nozzle needs in addition supporting air -blower, and the loaded down with trivial details manual operation that artifically ignite, manual load is adjusted has stopped because the maloperation arouses the accident potential that takes place to threaten the person and equipment safety after the detonation. It is more even with the mixture of air to make the dimethyl ether simultaneously.
Description
Technical field
The utility model is related to burner arts, more particularly to a kind of DME combustion device.
Background technology
Dimethyl ether is also known as methyl ether, abbreviation DME, molecular formula CH3OCH3, dimethyl ether is made up of methanol dehydration, and it is in normal temperature
Under be a kind of colourless gas or compressed liquid, with slight ether fragrance, its gaseous state Lower heat value at standard conditions is
58.8NJ/m3, vapour pressure at room temperature is about 0.5MPa.
Dimethyl ether is the homologue of ether, but it is different from the ether as anesthetic, and toxicity is extremely low, can be dissolved in water and many
Chemical substance is planted, is widely used in the multiple uses such as compression agent, spray, refrigerant and lytic agent.Due to the heat of dimethyl ether
Value is more than 1.6 times of heating value of natural gas, so dimethyl ether has caused increasing people as the characteristic that fuel is used
Attention.
National Technical quality supervision and test quarantine general bureau combines with national standardization administration committee and has issued GB25035-
2010《City gas dimethyl ether》National standard, the standard specifies suitable for civilian, commercial and industrial enterprise's dimethyl ether
Indices and requirement, the purposes that dimethyl ether mixes burning with oil liquefied gas thoroughly forbidden, and is that dimethyl ether is used as fuel
The popularization on way serves positive promotion and directive function with application.But, due to the corollary equipment of dimethyl ether pure burning in recent years,
What particularly burner was developed is delayed, seriously limits the popularization of dimethyl ether and application, thus before the present invention there is not yet
A kind of application of electromechanical integration Automatic Control, burner with pure Dimethyl ether as fuel on boiler and firing equipment.
Had the following disadvantages in current art：
(1) burner with natural gas or liquefied gas as fuel uses dimethyl ether fuel instead, causes the nozzle arrangements of burner
It is not suitable with the fuel characteristic of dimethyl ether；
(2) encapsulant of alternative burner not dimethyl ether resistant corrosion；
(3) corrosion of the subtracting of burner, voltage adjusting device not dimethyl ether resistant.
Such as Application No.：A kind of DME combustion device, its knot are disclosed in 200820109417 patent application document
Structure is made up of two concentric sleeves and stabilizer, and inner sleeve is passed through fuel, and outer sleeve is passed through combustion air, fuel with
Combustion air is burnt after the rotation of spiral-flow type stabilizer mixes.Because the burner needs manual firing, and lack
Process of combustion is controlled and automatic ignition, fire defector, blowout protection load automatic regulation function, so it is only that one kind can
With the burner of the dimethyl ether that burns.
Do not propose the technical side of solution in technical scheme disclosed above to problem to be solved in the application
Case, while also in view of this, therefore proposing the application without any relevant technical motivation.
Utility model content
The purpose of this utility model is to provide a kind of DME combustion device.
To achieve these goals, the utility model takes following technical scheme.
The utility model provides following scheme：
A kind of DME combustion device, described burner includes burner body, fuel nozzle, gas valve module, combustion
Burner body described in burner control system includes：Air blower, air-intake device, air register, described air blower one end fill with air intake
Put and be connected, the other end is connected with the air register；The fuel nozzle includes：Nozzle assembly, gas valve module, air inlet
Pipe, the gas valve module is connected by air inlet pipe with nozzle assembly, and the nozzle assembly includes that outer nozzle and center are sprayed
Mouth, the outer nozzle and central nozzle are many jet orifice structures.
The gas valve module includes：Gas consumption adjusting valve and dimethyl ether resistant magnetic valve described in dimethyl ether resistant magnetic valve
It is connected with the air inlet pipe by gas consumption adjusting valve.
The gas valve module also includes：Gaseous-pressure switch, pressure gauge, the gas pressure regulator, governor of resistance to diformazan and resistance to diformazan
Gas filter, the described gas filter of resistance to diformazan one end is connected with gas pipeline, and the other end is adjusted with the resistance to diformazan combustion gas
Depressor is connected, and the gas pressure regulator, governor of resistance to diformazan is also connected with gaseous-pressure switch, the gaseous-pressure switch and resistance to two
Pressure gauge is additionally provided between first gas pressure regulator, governor.
Also include dimethyl ether resistant rubber sheet gasket in the gas valve module.
Air door servomotor, ignition transformer and combustion air pressure switch are additionally provided with the burner body,
The air door servomechanism motor, ignition transformer and combustion air pressure switch are arranged on air blower.
Described air blower one end is also associated with control cabinet, the control cabinet respectively with the air door servomechanism motor, igniting
Transformer and combustion air pressure switch are connected.
The burner tip include air inlet lines, air inlet pipe, ignitor, flame holder, flame detector, outer nozzle with
And central nozzle, the ignitor is connected with flame holder, the nozzle of the central nozzle and outer nozzle to be vertically arranged, institute
Flame holder is stated to be arranged between flame detector and central nozzle.
The outer nozzle injection diameter is more than central nozzle injection diameter.
By implementing the technical scheme provided in the utility model, obtainable technique effect is as follows：
DME combustion device described in the invention is compared with the dimethyl ether burner for currently using：DME combustion device is machine
Electrical integrated, fully automatic operation, integral combustor, it overcomes dimethyl ether burner needs supporting air blower, people in addition
Work igniting, the cumbersome manual operations of Manual load regulation, have prevented because maloperation jeopardizes the person and set after causing detonation
The accident potential of standby safety.
DME combustion device described in the invention is compared with the non-dimethyl ether burner special for being used now：Dimethyl ether
Burner is mounted with the special gas nozzle component of the dimethyl ether of many jet orifice structures, and the structure makes the mixing of dimethyl ether and air more
Uniformly, realized high when pure Dimethyl ether is used as fuel than big, the characteristics of complete, flame is powerful and vigorous of burning with regulation
Effect, the burning completely of low emission.
The additional aspect of the utility model and advantage will be set forth in part in the description, and these are by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Fig. 1 is a kind of DME combustion device structural representation in the utility model；
Fig. 2 is a kind of DME combustion device nozzle arrangements schematic diagram in the utility model；
Fig. 3 is a kind of DME combustion device workflow schematic diagram in the utility model.
Marked in figure：1. burner tip；2. air register；3. air inlet pipe；4. gas consumption adjusting valve；5. dimethyl ether resistant is electric
Magnet valve；6. gaseous-pressure is switched；7. pressure gauge；8. the gas pressure regulator, governor of resistance to diformazan；9. the gas filter of resistance to diformazan；10. air door is watched
Take motor；11. ignition transformers；12. combustion air pressure switches；13. air-intake devices；14. air blowers；15. control cabinets；16.
Ignitor；17. flame holders；18. flame detectors；19. outer nozzles；20. central nozzles；21. air inlet lines.
Specific embodiment
Implementation method of the present utility model is described below in detail, the example of the implementation method is shown in the drawings, wherein
Same or similar label represents same or similar element or the element with same or like function from start to finish.Lead to below
It is exemplary to cross the implementation method being described with reference to the drawings, and is only used for explaining the utility model, and can not be construed to this practicality
New limitation.
As shown in figure 1, a kind of DME combustion device, described burner includes burner body, fuel nozzle, gas valve
Burner body described in module, burner control system includes：Air blower 14, air-intake device 13, air register 2, the air blast
The one end of machine 14 is connected with air-intake device 13, and the other end is connected with the air register 2；The fuel nozzle includes：Nozzle sets
Part, gas valve module, air inlet pipe 3, the gas valve module are connected by air inlet pipe 3 with nozzle assembly, the nozzle
Component includes outer nozzle 19 and central nozzle 20, and the outer nozzle 19 and central nozzle 20 are many jet orifice structures.
Dimethyl ether has higher than natural gas by 60%, lower than oil liquefied gas 40% or so gas phase low level in normal conditions
Calorific value and nearly 30% flame propagation velocity higher than both fuel, dimethyl ether fuel must spray from nozzle at high speeds, to ensure
Burner has certain regulation ratio, while fuel injection speed during minimum discharge have to be larger than flame propagation velocity, to protect
Card is not tempered.
Power output according to burner selects suitable air blower, and air-intake device, air blower are installed in blower inlet
Outlet install air register, and air register outlet install spout after form burner body.The air inlet pipe of burner is installed
On air register, dimethyl ether special nozzle component and stabilizer, the import of air inlet pipe and gas valve system are installed in the outlet of air inlet pipe
Component is connected.The special electromagnetic valve of the supporting dimethyl ether resistant corrosion of gas valve module, and resistance to diformazan is installed in magnetic valve import
The gas filter and pressure regulator of ether corrosion.The above-mentioned supporting process of combustion controller of part, flame detector, electric ignition device and
Full-automatic DME combustion device is formed after the part such as air door servomotor and combustion gas, combustion air pressure switch.
The gas valve module includes：Gas consumption adjusting valve 4 and dimethyl ether resistant electromagnetism described in dimethyl ether resistant magnetic valve 5
Valve 5 is connected by gas consumption adjusting valve 4 with the air inlet pipe 3.
The gas valve module also includes：Gaseous-pressure switch 6, pressure gauge 7, the gas pressure regulator, governor of resistance to diformazan 8 and resistance to
Diformazan gas filter 9, one end of the gas filter of resistance to diformazan 9 is connected with gas pipeline, the other end and the resistance to diformazan
Gas pressure regulator, governor 8 is connected, and the gas pressure regulator, governor of resistance to diformazan 8 is also connected with gaseous-pressure switch 6, and the gaseous-pressure is opened
Close and be additionally provided with pressure gauge 7 between 6 and the gas pressure regulator, governor of resistance to diformazan 8.
Dimethyl ether needs to be decompressed to the operating pressure of burner needs after vaporizer, but due to oil liquefied gas
The parts such as the epithelium on the supporting pressure reducer of burner or voltage-stablizer are nitrile rubber products, and dimethyl ether has to nitrile rubber
Stronger dissolubility, so the pressure reducer or voltage-stablizer of routine can not be arranged on dimethyl ether fuel burner using.
Also include dimethyl ether resistant rubber sheet gasket in the gas valve module.Because dimethyl ether has well to elastomeric material
Dissolubility, so just being produced after the conventional nitrile rubber sealing ring contact dimethyl ether of the part such as multifuel burner magnetic valve swelling existing
As, and failed after using several weeks, there is fire or explosion accident after in turn resulting in gas leakage.
Seal on burner also replaces with the dimethyl ether resistant rubber sheet gasket of dimethyl ether resistant corrosion, conventional burner combustion
Epithelium, sealing ring on valve port pad and pressure regulator on pneumoelectric magnet valve are made using nitrile rubber, because fourth is fine
Rubber seal can fail after contacting dimethyl ether because producing rapidly swelling, so the present invention have chosen the material of dimethyl ether resistant
The parts such as epithelium, the sealing ring being made on the valve port pad and pressure regulator of gas electromagnetic valve, are not influenceing magnetic valve and pressure regulation
Device solves the problems, such as dissolving and corrosion of the dimethyl ether to these parts using under conditions of function.
Air door servomotor 10, ignition transformer 11 and combustion air pressure is additionally provided with the burner body to open
12 are closed, the air door servomechanism motor 10, ignition transformer 11 and combustion air pressure switch 12 are arranged at air blower 14
On.
The one end of the air blower 14 is also associated with control cabinet 15, the control cabinet 15 respectively with the air door servomechanism motor
10th, ignition transformer 11 and combustion air pressure switch 12 are connected.
Dimethyl ether rapidly must mix from after nozzle ejection with combustion air, to ensure to burn completely, while also appropriate
Resistance when improving the supply gas pressure of dimethyl ether to overcome high speed to spray, nozzle must have enough actual internal areas to ensure combustion
The specified gas quantity of burner, and blower air quantity burns when also have to be larger than dimethyl ether metered flow required air capacity completely,
At this moment the air register of particular design is just needed to mix dimethyl ether and combustion-supporting gas, the burner tip 1 includes sky
Gas inlet pipe 21, air inlet pipe 3, ignitor 16, flame holder 17, flame detector 18, outer nozzle 19 and central nozzle 20, it is described
Ignitor 16 is connected with flame holder 17, and the central nozzle 20 is to be vertically arranged with the nozzle of outer nozzle 19, the steady flame
Device 17 is arranged between flame detector 18 and central nozzle 20.The injection diameter of the outer nozzle 19 is more than the spray orifice of central nozzle 20
Diameter.
Dimethyl ether and the close molal weight of oil liquefied gas, but dimethyl ether calorific value is only the 62% of oil liquefied gas,
This means that：If we according to oil liquefied gas gas quantity selective combustion device when, burner nozzle is in metered flow
The heat ratio oil liquefied gas exported after DME combustion have lacked 38%；If we are according to the gas quantity selective combustion of dimethyl ether
Device nozzle, the cross-section area of nozzle increases, combustion gas speed significantly declines, because the flame propagation velocity of dimethyl ether compares oil liquefied gas
High the reason for, so easily producing the phenomenon of tempering.
As can be seen from Figure 2：The direction of the spray orifice of outer nozzle 19 is the tangential direction of its circumference, because sprayed from spray orifice two
Methyl ether gas be with combustion air direction it is vertical, in order to two kinds of mixing of gas, gas of dimethyl ether is pre- with combustion air
Mixed mixed gas mix again in the case where the pressure of combustion air is promoted by the rotation of flame holder, and at spout outlet
By the flame ignition of central nozzle 20.Several gas jet orifices are equally arranged on the border of central nozzle 20, is sprayed through spray orifice
Gas of dimethyl ether and through the combustion air direction of flame holder 17 be also vertical, only because through the combustion-supporting sky of flame holder 17
The reduction of gas velocity degree, under smoke backflow effect, forms continuous flame, and constantly ignite from outer spray in the region of flame holder 17
Gaseous mixture that mouth sprays and after air is pre-mixed, forms dimethyl ether torch.
Multiple small spray orifices cause that gas of dimethyl ether has speed higher after spraying, and have certain penetration power and be conducive to
Mixed with combustion air, the circulation area that multiple small spray orifices are converged into ensure that burner has enough gas flows.By
In the spray orifice of the spray orifice less than outer nozzle 19 of central nozzle 20, so its combustion gas speed in minimum gas flow is higher than diformazan
The flame propagation velocity of ether, it is ensured that DME combustion device will not produce tempering phenomenon.
Operating mode of this burner in normal work be：Process of combustion controller control cabinet and flame detector, gas pressure
Power protection switch etc. constitutes control and the safety system of burner.The program behavior of startup and the operation of burner is shown in Fig. 3,
As shown in Figure 3：DME combustion device also have followed home and abroad while dimethyl ether fuel characteristic is adapted to and be fired on blowing-type
The security regulations of air burner, burner realizes fully automated operation mode, and specific startup is with running：
Burner carries out self-inspection to burner routine controller first after startup order is connected to, and then carries out burner
The detection of internal security signal includes：Check whether the signal of flame detection circuit is normal, external temperature, pressure security protection
Whether within setting value, these inspections meet after entry condition signal, and process of combustion controller just enters start-up mode.
Process of combustion controller work after also to check gaseous-pressure switch contact whether close, judged with this be
It is no to have connected whether the combustion gas for meeting burner using pressure requirements, and flame detector detect burner hearth and had flame
In the presence of, once gaseous-pressure is beyond the presence that flame is detected using pressure limit or flame detector, burner control
Case will alarm and stop the startup program of burner.
Above-mentioned safety inspection is started by later air blower, and the air door on air-intake device is ascending to be gradually opened, in peace
If air pressure switch does not detect the pressure of combustion air within full-time, process of combustion controller will also be alarmed, stopped
Machine, if the pressure of combustion air is normal, after the preceding purging that air blower has carried out procedure stipulation, air door is turned down, combustion gas stream
Adjustable valve is opened to igniting aperture, and ignition transformer produces pilot spark at igniting point pole after starting, and electromagnetism hair is opened, diformazan
Ether gas sprays ignited spark and lights after air inlet pipe reaches central nozzle by spray orifice, flame detector detect flame with
The startup program of afterburner terminates.If flame detector does not detect flame, burner control within safety time
Case will alarm and stop the work of burner.
Fuel quantity and combustion air amount will be automatically adjusted according to Regulate signal is met after burner ignition success, run
In once flame-out burner will be alarmed, shut down.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (8)
1. a kind of DME combustion device, it is characterised in that：Described burner includes burner body, fuel nozzle, gas valve
Burner body described in module, burner control system includes：Air blower (14), air-intake device (13), air register (2), institute
State air blower (14) one end to be connected with air-intake device (13), the other end is connected with the air register (2)；The fuel nozzle
Including：Nozzle assembly, gas valve module, air inlet pipe (3), the gas valve module pass through air inlet pipe (3) and nozzle assembly
It is connected, the nozzle assembly includes outer nozzle (19) and central nozzle (20), the outer nozzle (19) and central nozzle (20)
It is many jet orifice structures.
2. DME combustion device according to claim 1, it is characterised in that the gas valve module includes：Combustion gas stream
Adjustable valve (4) and dimethyl ether resistant magnetic valve (5) the dimethyl ether resistant magnetic valve (5) are by gas consumption adjusting valve (4) and institute
Air inlet pipe (3) is stated to be connected.
3. DME combustion device according to claim 2, it is characterised in that the gas valve module also includes：Combustion gas
Pressure switch (6), pressure gauge (7), the gas pressure regulator, governor of resistance to diformazan (8) and the gas filter of resistance to diformazan (9), the resistance to diformazan combustion
Air filter (9) one end is connected with gas pipeline, and the other end is connected with the gas pressure regulator, governor of resistance to diformazan (8), described resistance to
Diformazan gas pressure regulator, governor (8) is also connected with gaseous-pressure switch (6), and gaseous-pressure switch (6) is adjusted with resistance to diformazan combustion gas
Pressure gauge (7) is additionally provided between depressor (8).
4. DME combustion device according to claim 3, it is characterised in that also include resistance to two in the gas valve module
Methyl ether rubber sheet gasket.
5. DME combustion device according to claim 1, it is characterised in that be additionally provided with air door on the burner body
Servomotor (10), ignition transformer (11) and combustion air pressure switch (12), the air door servomechanism motor (10), point
Fiery transformer (11) and combustion air pressure switch (12) are arranged on air blower (14).
6. DME combustion device according to claim 5, it is characterised in that described air blower (14) one end is also associated with control
Case (15) processed, the control cabinet (15) respectively with the air door servomechanism motor (10), ignition transformer (11) and combustion-supporting sky
Gas pressure switch (12) is connected.
7. DME combustion device according to claim 1, it is characterised in that the burner tip (1) is entered including air
The spray of pipe (21), air inlet pipe (3), ignitor (16), flame holder (17), flame detector (18), outer nozzle (19) and center
Mouth (20), the ignitor (16) is connected with flame holder (17), the nozzle of the central nozzle (20) and outer nozzle (19)
To be vertically arranged, the flame holder (17) is arranged between flame detector (18) and central nozzle (20).
8. DME combustion device according to claim 1, it is characterised in that during outer nozzle (19) injection diameter is more than
Heart nozzle (20) injection diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621113688.5U CN206191584U (en) | 2016-10-11 | 2016-10-11 | Dimethyl ether combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621113688.5U CN206191584U (en) | 2016-10-11 | 2016-10-11 | Dimethyl ether combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206191584U true CN206191584U (en) | 2017-05-24 |
Family
ID=58729696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621113688.5U Active CN206191584U (en) | 2016-10-11 | 2016-10-11 | Dimethyl ether combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206191584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043920A (en) * | 2019-04-03 | 2019-07-23 | 大唐东营发电有限公司 | It is a kind of for ignition of the boiler and combustion-supporting device |
-
2016
- 2016-10-11 CN CN201621113688.5U patent/CN206191584U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043920A (en) * | 2019-04-03 | 2019-07-23 | 大唐东营发电有限公司 | It is a kind of for ignition of the boiler and combustion-supporting device |
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