CN108386870A - Radial burners and its autocontrol method - Google Patents
Radial burners and its autocontrol method Download PDFInfo
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- CN108386870A CN108386870A CN201810177281.6A CN201810177281A CN108386870A CN 108386870 A CN108386870 A CN 108386870A CN 201810177281 A CN201810177281 A CN 201810177281A CN 108386870 A CN108386870 A CN 108386870A
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- cylinder
- adjustable
- fluid
- radial burners
- inner casing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/16—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration with devices inside the flame tube or the combustion chamber to influence the air or gas flow
- F23R3/18—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants
- F23R3/22—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants movable, e.g. to an inoperative position; adjustable, e.g. self-adjusting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
Abstract
The invention discloses a kind of radial burners and its autocontrol methods.The radial burners include：Burner housing；Burner inner casing；Mixture runner is formed between burner housing and burner inner casing；The space that burner inner casing surrounds is divided into fuel pressure stabilizing cavity and control mechanism installation cavity by inner casing spatial clapboard；Stepper motor is located in control mechanism installation cavity；Pedestal is fixed on burner inner casing, interior to have a groove, is provided with camber blades；And adjustable cylinder, in the groove of inserted base, screw-thread fit on pedestal and stepper motor driven screw rod, the adjustable cylinder has a fluid inlet, stepper motor can drive adjustable cylinder to be moved upwardly or downwardly, to which adjustment base is to the shielded area of fluid inlet, the adjusting to fluid flow in cylinder is adjusted is realized.The radial burners can effectively avoid the occurrence of flame-out and tempering, improve the combustion stability of nozzle.
Description
Technical field
The disclosure belongs to burner technical field, is related to a kind of radial burners and its autocontrol method.
Background technology
Gas turbine is widely used in electric power, aviation, petrochemical industry due to the features such as single machine is small and output power
Etc. industries.Due to energy crisis and environmental degradation, be badly in need of development high-efficiency cleaning combustion chamber, it is desirable that combustion chamber have igniting it is reliable,
The characteristics such as flameholding, efficient and low emission.Current China problem of environmental pollution is extremely serious, development gas turbine cleaning combustion
Burning technology is very urgent.Gas turbine manufacturer has developed a variety of clean-burning technologies, and such as poor premixed combustion technology, dilute phase are pre-
Mixed pre-evaporation technique, oil-poor direct injection technology and catalytic combustion technology etc., although these technologies can effectively reduce pollutant
The problem of discharging, but all suffering from combustion instability.A kind of radial direction for liquid fuel combustion developed such as AM General company
Grading combustion technology can effectively reduce nitric oxide discharge.But since main flame stabilization is at the low speed edge of shear layer,
Shear layer low-speed region nearby will produce periodic vortex shedding, and oscillation is also easy to produce near stable point, be transported in off-design behaviour
Combustion instability phenomenon easily occurs when row.
Similar with gas turbine burner, various types of industrial burners such as boiler, chemical furnace are also faced with stable combustion
The contradiction burnt and reduce pollutant emission.Therefore, the stability of burning how can be improved while reducing pollutant to be become
Technical problem urgently to be resolved hurrily.
Invention content
(1) technical problems to be solved
Present disclose provides a kind of radial burners and its autocontrol methods, set forth above at least partly to solve
Technical problem.
(2) technical solution
According to one aspect of the disclosure, a kind of radial burners are provided, including：Burner housing has an air
Entrance；Burner inner casing has a fuel inlet and several fuel jet orifices；It is formed between burner housing and burner inner casing mixed
Logistics road is closed, which communicates with fuel jet orifice, for air and fuel blending；Inner casing spatial clapboard, will be in burner
The space that shell surrounds is divided into fuel pressure stabilizing cavity and control mechanism installation cavity；Stepper motor is located in control mechanism installation cavity；Bottom
Seat, is fixed on burner inner casing, interior to have a groove, is provided with camber blades, which makes mixture flow
The fluid in road carries out the compound motion of centripetal movement and circular motion；And adjustable cylinder, in the groove of inserted base, pass through
There is a fluid inlet, stepper motor can drive for pedestal and the screw-thread fit on stepper motor driven screw rod, the adjustable cylinder
Dynamic adjustable cylinder is moved upwardly or downwardly, and to which adjustment base is to the shielded area of fluid inlet, is realized to cylinder is adjusted
The adjusting of interior fluid flow.
In some embodiments of the present disclosure, the exit of adjustable cylinder is provided with mesh plate, is provided with above mesh plate
The circular hole vertical with mesh plate, after mesh plate, the rotational component in movement will be filtered fluid, and become straight fortune
It is dynamic.
In some embodiments of the present disclosure, the inlet of adjustable cylinder is provided with baffle, which can eliminate entrance
The circumferential movement of adjustable cylinder fluid.
In some embodiments of the present disclosure, radial burners further include：Outer tube is set to the periphery of adjustable cylinder,
The outlet flow of the radial burners is divided into outer ring runner and intermediate flow channel by adjustable cylinder, wherein adjustable cylinder with it is outer
There is outer ring runner, cylinder interior, which is adjusted, has intermediate flow channel between pipe.
In some embodiments of the present disclosure, the distance between outlet and outer tube outlet of cylinder is adjusted and is more than zero.
In some embodiments of the present disclosure, the entrance of burner housing and burner inner casing in the radial burners
For hemispheric expansion segment, then become vertical flat segments.
In some embodiments of the present disclosure, radial burners are controlled by an automatic control system, this is automatically controlled
System includes：Microcontroller has an input terminal and output end；And flame holding monitoring probe, it is located at radial burners
Fluid outlet；Wherein, which is connected with flame stabilization monitoring probe, which is connected with stepper motor.
In some embodiments of the present disclosure, adjustable cylinder includes：Outer wall, the bottom of the outer wall are provided with fluid and enter
Mouthful, in the groove of outer wall inserted base；Cylinder, periphery have screw thread, internal thread are correspondingly arranged on pedestal, the cylinder
Screw thread is mutually twisted with the internal thread on pedestal, and the screw thread of the cylinder and the screw thread on stepper motor driven screw rod
It is mutually twisted；Centrum is located at cylinder top, is connected by multiple support cylinders with outer wall；And cylinder reinforcing rib, setting
On multiple support cylinders, to increase the bonding strength between supporting cylinder；Wherein, in the case where meeting intensity requirement,
The quantity and diameter that cylinder is supported by change, to adjust flow and turbulivity that fluid in cylinder is adjusted.
In some embodiments of the present disclosure, there is intermediate fuel pipe, the intermediate fuel pipe to pass through at the middle part that cylinder is adjusted
The centrum of logical adjustable cylinder and the cylinder and inner casing spatial clapboard of its underpart, the fuel of fuel pressure stabilizing cavity is directed toward in one end
The outlet of the radial burners outer tube is directed toward in entrance, one end；Intermediate fuel pipe is fixed on adjustable cylinder, with adjustable pitch circle
Cylinder moves together, to change the distance between the fuel inlet of intermediate fuel pipe and fuel pressure stabilizing cavity.
A kind of autocontrol method of radial burners another aspect of the present disclosure provides, including：Work as monitoring
To radial burners exit flame far from jet expansion, when occurring putting out trend, send out instruction control stepper motor driving
Adjustable cylinder moves downward, and the area of the fluid inlet of adjustable cylinder is made to reduce, to reduce into adjustable cylinder
Fluid flow and flow velocity, prevent flame to be blown out；And when monitoring the flame in radial burners exit close to jet expansion,
When there is tempering trend, sends out the adjustable cylinder of instruction control stepper motor driving and move upwards, make the fluid of adjustable cylinder
The area of entrance increases, and to increase into the fluid flow and flow velocity that cylinder is adjusted, prevents to be tempered.
(3) advantageous effect
It can be seen from the above technical proposal that the disclosure provide radial burners and its autocontrol method, have with
Lower advantageous effect：
By automatic controls according to the flame conditions of monitoring, control stepper motor driving is adjusted cylinder and transports up and down
It is dynamic, and during adjustable cylinder moves up and down, it is steady to change the area, cartridge and fuel that cylinder fluid inlet is adjusted
The distance between fuel inlet of chamber and the distance between the outlet of adjustable cylinder and outer tube outlet are pressed, entrance can be adjusted
The flow of adjustable cylinder gas, and then adjust the ratio of irrotationality fluid and outer ring runner that cylinder is adjusted having between rotary fluid
Example carries out finely regulating to burning, effectively avoids the occurrence of flame-out and is tempered, improve the combustion stability of nozzle, drops
Low stain object discharges.
Description of the drawings
Fig. 1 is the three dimensional structure diagram according to radial burners shown in one embodiment of the disclosure.
Fig. 2 is the half section structure diagram according to radial burners shown in one embodiment of the disclosure.
Fig. 3 is the operation principle schematic diagram according to radial burners shown in one embodiment of the disclosure.
Fig. 4 is the three dimensional structure diagram according to pedestal shown in one embodiment of the disclosure.
Fig. 5 is according to the three dimensional structure diagram that cylinder is adjusted shown in one embodiment of the disclosure.
Fig. 6 is the half-sectional structural representation of three-dimensional according to the radial burners for carrying mesh plate shown in one embodiment of the disclosure
Figure.
Fig. 7 is according to the half section structure diagram for carrying middle spaced winding expects pipe shown in one embodiment of the disclosure.
Fig. 8 is according to the schematic diagram that baffle is arranged shown in one embodiment of the disclosure in adjustable cylinder gas access.
【Symbol description】
1- air intakes；2- fuel inlets；
3- erection supports；4- burner housings；
5- burner inner casings；6- fuel jet orifices；
7- fuel pressure stabilizing cavities；8- mixture runners；
9- inner casing spatial clapboards；10- control mechanism installation cavitys；
11- stepper motors；12- screw rods；
13- pedestals；
Internal thread on 13_1- pedestals；13_2- grooves；
External screw thread on 13_3- pedestals；
14- camber blades；15- upper covers；
16- outer tubes；The outer rings 17- runner；
18- intermediate flow channels；
Cylinder is adjusted in 19-；
Cylinder fluid inlet is adjusted in 19_1-；Cylinder screw thread is adjusted in 19_2-；
Drum inlet lower frame is adjusted in 19_3-；19_4- supports cylinder；
19_5- cylinder reinforcing ribs；19_6- centrums；
19_7- outer walls；
20- microcontrollers；
20_1- single-chip microcomputer outputs；20_2- single-chip microcomputer inputs；
21- flame holdings monitoring probe；22- enters the fluid in channel between blade；
The fluid that 23- passes through middle cylinder entrance；24- enters the fluid of outer ring runner；
25- enters the fluid of intermediate flow channel；26- intermediate fuel pipes；
27- mesh plates；The fuel inlet of 28- fuel pressure stabilizing cavities；
Cylinder gas access baffle is adjusted in 29-.
Specific implementation mode
Present disclose provides a kind of radial burners and its autocontrol methods, by automatic controls according to monitoring
Flame conditions, control stepper motor driving is adjusted cylinder and moves up and down, and during adjustable cylinder moves up and down, becomes
Change the distance between fuel inlet of the area that cylinder fluid inlet is adjusted, cartridge and fuel pressure stabilizing cavity and is adjusted
Cylinder exports the distance between outer tube outlet, can adjust into the flow that cylinder gas is adjusted, and then adjusts adjustable
The irrotationality fluid of cylinder and the ratio of outer ring runner having between rotary fluid carry out finely regulating to burning, effectively avoid stopping working
The occurrence of with tempering, the combustion stability of nozzle is improved, reduces pollutant emission.
To make the purpose, technical scheme and advantage of the disclosure be more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
It should be noted that some conventional components are indicated in the accompanying drawings, but do not carry out in the description detailed
Illustrate, the shape and size of each component do not reflect actual size and ratio in figure, and only illustrate the content of the embodiment of the present disclosure.Separately
Outside, in the claims, any reference mark between bracket should not be configured to limitations on claims.Furthermore
Word "comprising" or " comprising " do not exclude the presence of element or step not listed in the claims.Word before element
"a" or "an" does not exclude the presence of multiple such elements.
In first exemplary embodiment of the disclosure, a kind of radial burners are provided.
Fig. 1 is the three dimensional structure diagram according to radial burners shown in one embodiment of the disclosure.Fig. 2 is according to this public affairs
Open the half section structure diagram of radial burners shown in an embodiment.
In conjunction with shown in Fig. 1 and Fig. 2, the radial burners of the disclosure, including：Burner housing 4 has an air intake 1；
Burner inner casing 5 has a fuel inlet 2 and several fuel jet orifices 6；It is formed between burner housing 4 and burner inner casing 5 mixed
Logistics road 8 is closed, which communicates with fuel jet orifice 6, for air and fuel blending；Inner casing spatial clapboard 9 will burn
The space that device inner casing 4 surrounds is divided into fuel pressure stabilizing cavity 7 and control mechanism installation cavity 10；Stepper motor 11 is located at control mechanism
In installation cavity 10；Pedestal 13 is fixed on burner inner casing 5, interior to have a groove 13_2, is provided with camber blades
14, which makes the fluid of mixture runner 8 carry out the centripetal compound motion moved with circular motion；And it is adjustable
Cylinder 19 in the groove 13_2 of inserted base 13, passes through the screw-thread fit on the screw rod 12 that pedestal 13 drives with stepper motor 11,
The adjustable cylinder 19 has an adjustable cylinder fluid inlet 19_1, stepper motor 11 can drive adjustable cylinder 19 upwards or
It moves downward, to which adjustment base 13 is to the shielded area of adjustable cylinder fluid inlet 19_1, realizes to adjustable cylinder 19
The adjusting of interior fluid flow.
It please refers to Fig.1 to Fig. 5, the structure and operation principle of a kind of radial burners shown in the embodiment of the present disclosure is subject to
Explanation.
Fig. 1 is the three dimensional structure diagram according to radial burners shown in one embodiment of the disclosure, and Fig. 2 is according to this public affairs
Open the half section structure diagram of radial burners shown in an embodiment.Air enters combustion by air intake 1 from burner base
Burner.Fuel is entered the fuel pressure stabilizing cavity 7 of burner by fuel inlet 2, and is sprayed by fuel jet orifice 6 and entered mixture runner 8,
Mutually being blended with air becomes flammable mixture.Burner housing 4 and burner inner casing 5 are hemispherical near burner inlet
Expansion segment, then become vertical flat segments, form mixture runner 8 between them.The space quilt that burner inner casing 5 surrounds
Inner casing spatial clapboard 9 is divided into two cavitys, fuel pressure stabilizing cavity 7 and control mechanism installation cavity 10.Stepper motor 11 is mounted on control
In mechanism installation cavity processed, and it is fixed on partition board 9.Flammable mixture is transferred 90 °, is changed by moving straight up after flat segments
Become horizontal centripetal movement.
Burner outlet runner is divided into outer ring runner 17 and intermediate flow channel 18 by adjustable cylinder 19, preferably adjustable cylinder
The distance between 19 outlets and the outlet of outer tube 16 are not zero.
The operation principle schematic diagram for illustrating the embodiment of the present disclosure is please referred to Fig.3, under the action of camber blades 14, into leaf
The fluid 22 in channel between piece, become existing centripetal movement by centripetal movement has the compound motion of circular motion, the fluid point again
At two parts, a part enters outer ring runner 17, becomes the fluid 24 into outer ring runner；Another part is by being adjusted cylinder
19 fluid inlet 19_1 enters intermediate flow channel 18, becomes the fluid 25 into intermediate flow channel.
Fig. 4 is pedestal schematic three dimensional views, and Fig. 5 is adjustable cylinder schematic three dimensional views.It, can shown in shown in Figure 4 and Fig. 5
Adjusting cylinder 19 includes：The bottom of outer wall 19_7, outer wall 19_7 are provided with fluid inlet 19_1, outer wall 19_7 inserted bases 13
Groove 13_2 in；Cylinder, periphery have screw thread, are correspondingly arranged on internal thread on pedestal 13, the screw thread of the cylinder and bottom
Internal thread on seat 13 is mutually twisted, and the also phase of the screw thread on the screw rod 12 that is driven with stepper motor 11 of the screw thread of the cylinder
Mutually occlusion；Centrum 19_6 is located at cylinder top, is connected by multiple support cylinder 19_4 with outer wall 19_7；And cylinder
Reinforcing rib 19_5 is set on multiple support cylinders, to increase the bonding strength between support cylinder 19_4；Wherein, full
In the case of sufficient intensity requirement, the quantity and diameter of cylinder 19_4 are supported by change, and stream in cylinder 19 is adjusted to adjust
The flow and turbulivity of body.
In order to illustrate the method that the disclosure adjusts fluid flow in intermediate flow channel 18, please with further reference to Fig. 4 and Fig. 5.
In Fig. 5, support cylinder 19_4 connects adjustable cylinder outer wall 19_7 and centrum 19_6, is increased by cylinder reinforcing rib 19_5
Big cylinder bonding strength, screw thread 19_2 are located on the cylinder of the lower parts centrum 19_6.In the case where meeting intensity requirement, pass through
Change the flow and turbulivity for supporting the quantity of cylinder 19_4 and diameter that can also adjust fluid in intermediate flow channel.Adjustable cylinder
Fluid inlet 19_1 is located at the bottom of adjustable cylinder.In the groove 13_2 of 19 inserted base 13 of adjustable cylinder, pedestal 13 can
To block adjustable cylinder fluid inlet 19_1.Internal thread 13_1 on pedestal 13 and the screw thread 19_2 phases on adjustable cylinder 19
Mutually occlusion, the screw thread being adjusted in addition on the screw rod 12 that cylinder screw thread 19_2 passes through pedestal 13 to be driven with stepper motor 11 are mutually stung
It closes, middle cylinder can rotate under the driving of stepper motor, and then adjustable cylinder is made to be moved upwardly or downwardly, while adjustable
The area of pitch circle cylinder fluid inlet 19_1 also changes correspondingly.Fig. 3 is referred to, when adjustable cylinder moves upwards, cylinder is adjusted
The area of fluid inlet 19_1 increases, that is, enters the fluid flow increase that cylinder is adjusted；Conversely, adjustable cylinder moves downward
When, the area that cylinder fluid inlet 19_1 is adjusted reduces, that is, enters the fluid flow reduction that cylinder is adjusted, when adjustable pitch circle
It is zero into the flow in adjustable cylinder when cylinder fluid inlet 19_1 is sheltered from by pedestal 13 completely.Pedestal 13 passes through pedestal
On external screw thread 13_3 be fixed to burner on.
Fig. 6 is referred to, Fig. 6 is the three-dimensional half-section diagram with mesh plate, and installation mesh is exported in adjustable cylinder 19
Plate 27 is provided with the circular hole vertical with mesh plate above mesh plate, and after mesh, the rotational component in movement will be filtered fluid
Fall, and becomes flat motion, and the fluid 24 for entering outer ring runner 17 will keep rotary motion, this two parts fluid is adjustable
Pitch circle cylinder 19 exports mutual blending, burns in the outlet of burner outer tube 16.The benefit designed in this way is the nothing in the middle part of burner
Rotary fluid can prevent from being tempered, and burner outer ring has rotary fluid flame can be prevented to be blown out.
Fig. 2 is referred to, the autocontrol method of the disclosure is illustrated, 20 input terminal 20_2 of microcontroller and flame stabilization
Property monitoring probe 21 be connected, single-chip microcomputer output 20_1 is connected with stepper motor 11, and screw rod one end is connected with stepper motor, another
The screw thread at end is mutually engaged with the screw thread of adjustable cylinder.When flame holding monitoring probe 21 finds flames far from jet expansion,
When trend is put out in appearance, microcontroller 20 sends out instruction and drives adjustable cylinder 19 to rotate by screw rod 12, makes adjustable cylinder 19
It moving downward, that is, reduces the area of middle cylinder fluid inlet 19_1, the fluid flow for entering middle cylinder in this way reduces, thus
Flow velocity will also reduce, and flame can be prevented to be blown out in this way.Conversely, when flame holding monitoring probe 21 finds flame close to spray
Mouth exports, and when there is tempering trend, microcontroller 20 sends out instruction and drives adjustable cylinder 19 to rotate by screw rod 12, makes to be adjusted
Cylinder 19 moves upwards, that is, increases the area of middle cylinder fluid inlet 19_1, and the fluid flow for entering middle cylinder in this way increases
Greatly, thus flow velocity also will increase, can prevent to be tempered in this way.
The radial burners of second exemplary embodiment of the disclosure, in order to achieve the purpose that brief description, above-mentioned first
Any technical characteristic for making same application describes all and in this, without repeating identical narration in a embodiment.
Fig. 7 is according to the half section structure diagram for carrying middle spaced winding expects pipe shown in one embodiment of the disclosure.Refer to figure
7, in the embodiment, the middle part of adjustable cylinder 19 has an intermediate fuel pipe 26, cartridge perforation that the vertebra of cylinder is adjusted
The fuel inlet 28 of fuel pressure stabilizing cavity is directed toward in body 19_6 and its lower end cylinder and inner casing spatial clapboard 9, one end, and combustion is directed toward in one end
The outlet of burner outer tube 16.Cartridge 26 is fixed on adjustable cylinder, is moved together with adjustable cylinder, when adjustable cylinder
When moving downward, the distance between cartridge 26 and the fuel inlet 28 of fuel pressure stabilizing cavity reduce, into the fuel of cartridge 26
It will increase, the equivalent proportion of middle part flammable mixture in this way increases, and is conducive to improve flame propagation velocity, prevents from stopping working；Conversely, working as
When adjustable cylinder moves upwards, when the distance between cartridge 26 and the fuel inlet 28 of fuel pressure stabilizing cavity increase, into combustion
The fuel of expects pipe 26 will reduce, and the equivalent proportion of middle part flammable mixture in this way reduces, and can reduce flame propagation velocity, anti-non-return
Fire.
The radial burners of disclosure third exemplary embodiment, in order to achieve the purpose that brief description, above-mentioned first
Any technical characteristic for making same application describes all and in this, without repeating identical narration in a embodiment.
Fig. 8 is according to the schematic diagram that baffle is arranged shown in one embodiment of the disclosure in adjustable cylinder gas access.Please
Referring to Fig. 8, in the embodiment, baffle 29 is set in adjustable cylinder gas access, eliminates the week for entering and cylinder fluid being adjusted
To movement, that is to say, that make the fluid for becoming irrotational motion into the fluid of intermediate flow channel, be thus not necessarily in adjustable cylinder
Outlet install mesh plate.
In summary, it is seen then that it is main to change there are three parameter during adjustable cylinder moves up and down, one
The area of adjustable cylinder fluid inlet 19_1, second is that between cartridge 26 and the fuel inlet 28 of fuel pressure stabilizing cavity away from
From third, the distance between adjustable cylinder outlet and the outlet of outer tube 16, the radial burners of the disclosure, which are exactly based on, changes this
Three parameters realize the finely regulating to burning.
In the 4th exemplary embodiment of the disclosure, a kind of radial burners based on described in the disclosure are provided
Autocontrol method, the autocontrol method include：When the flame for monitoring radial burners exit is far from jet expansion, go out
When now putting out trend, sends out the adjustable cylinder of instruction control stepper motor driving and move downward, the fluid of adjustable cylinder is made to enter
The area of mouth reduces, and to reduce into the fluid flow and flow velocity that cylinder is adjusted, flame is prevented to be blown out；And when monitoring
To radial burners exit flame close to jet expansion, when there is tempering trend, send out instruction control stepper motor driving
Adjustable cylinder moves upwards, and the area of the fluid inlet of adjustable cylinder is made to increase, to increase into adjustable cylinder
Fluid flow and flow velocity prevent to be tempered.
In conclusion present disclose provides a kind of radial burners and its autocontrol method, pass through automatic controls
According to the flame conditions of monitoring, control stepper motor driving is adjusted cylinder and moves up and down, and moves up and down in adjustable cylinder
During, change the distance between fuel inlet of the area that cylinder fluid inlet is adjusted, cartridge and fuel pressure stabilizing cavity,
And the distance between adjustable cylinder outlet and outer tube outlet, it can adjust into the flow that cylinder gas is adjusted, in turn
The ratio having between rotary fluid for adjusting irrotationality fluid and outer ring runner that cylinder is adjusted carries out finely regulating to burning, has
Effect is avoided the occurrence of flame-out and is tempered, and improves the combustion stability of nozzle, reduces pollutant emission.
So far, attached drawing is had been combined the present embodiment is described in detail.According to above description, those skilled in the art
There should be clear understanding to the disclosure.
It should be noted that in attached drawing or specification text, the realization method for not being painted or describing is affiliated technology
Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, above-mentioned definition to each element and not only limiting
Various concrete structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can carry out simply more it
Change or replaces, such as：
(1) direction term mentioned in embodiment, such as "upper", "lower", "front", "rear", "left", "right" etc. are only ginsengs
The direction of attached drawing is examined, not is used for limiting the protection domain of the disclosure；
(2) above-described embodiment can be based on the considerations of design and reliability, and the collocation that is mixed with each other uses or and other embodiment
Mix and match uses, i.e., the technical characteristic in different embodiments can freely form more embodiments.
Particular embodiments described above has carried out further in detail the purpose, technical solution and advantageous effect of the disclosure
It describes in detail bright, it should be understood that the foregoing is merely the specific embodiment of the disclosure, is not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
Claims (10)
1. a kind of radial burners, including：
Burner housing has an air intake；
Burner inner casing has a fuel inlet and several fuel jet orifices；
Mixture runner is formed between burner housing and burner inner casing, which communicates with fuel jet orifice, for sky
Gas and fuel blending；
The space that burner inner casing surrounds is divided into fuel pressure stabilizing cavity and control mechanism installation cavity by inner casing spatial clapboard；
Stepper motor is located in control mechanism installation cavity；
Pedestal is fixed on burner inner casing, interior to have a groove, is provided with camber blades, which makes to mix
The fluid for closing logistics road carries out the compound motion of centripetal movement and circular motion；And
Adjustable cylinder in the groove of inserted base, passes through pedestal and the screw-thread fit on stepper motor driven screw rod, this can
Adjusting cylinder has a fluid inlet, and the stepper motor can drive adjustable cylinder to be moved upwardly or downwardly, to adjust bottom
Seat realizes the adjusting to fluid flow in cylinder is adjusted to the shielded area of fluid inlet.
2. radial burners according to claim 1, wherein the exit of the adjustable cylinder is provided with mesh plate,
The circular hole vertical with mesh plate is provided with above mesh plate, after mesh plate, the rotational component in movement will be filtered fluid,
And become flat motion.
3. radial burners according to claim 1, wherein the inlet of the adjustable cylinder is provided with baffle, should
Baffle can be eliminated into the circumferential movement that cylinder fluid is adjusted.
4. radial burners according to claim 1, further include：
Outer tube is set to the periphery of adjustable cylinder, and the outlet flow of the radial burners is divided into outer ring stream by adjustable cylinder
Road and intermediate flow channel, wherein adjustable to have outer ring runner between cylinder and outer tube, cylinder interior, which is adjusted, has intermediate flow
Road.
5. radial burners according to claim 4, wherein between the outlet of the adjustable cylinder and outer tube outlet
Distance is more than zero.
6. radial burners according to claim 1, wherein the burner housing and burner inner casing are in the radially combustion
The entrance of burner is hemispheric expansion segment, then becomes vertical flat segments.
7. radial burners according to claim 1, wherein the radial burners are controlled by an automatic control system
System, the automatic control system include：Microcontroller has an input terminal and output end；And flame holding monitoring probe, it is located at
The fluid outlet of the radial burners；
Wherein, which is connected with flame stabilization monitoring probe, which is connected with stepper motor.
8. radial burners according to any one of claims 1 to 7, wherein the adjustable cylinder includes：
Outer wall, the bottom of the outer wall are provided with fluid inlet, in the groove of outer wall inserted base；
Cylinder, periphery have screw thread, are correspondingly arranged on internal thread on pedestal, the internal thread on the screw thread and pedestal of the cylinder
It is mutually twisted, and the screw thread of the cylinder is also mutually twisted with the screw thread on stepper motor driven screw rod；
Centrum is located at cylinder top, is connected by multiple support cylinders with outer wall；And
Cylinder reinforcing rib is set on multiple support cylinders, to increase the bonding strength between supporting cylinder；
Wherein, in the case where meeting intensity requirement, the quantity and diameter of cylinder are supported by change, to adjust adjustable pitch circle
The flow and turbulivity of fluid in cylinder.
9. radial burners according to claim 8, wherein the middle part of the adjustable cylinder has intermediate fuel pipe,
The centrum of cylinder and the cylinder and inner casing spatial clapboard of its underpart is adjusted in intermediate fuel pipe perforation, and combustion is directed toward in one end
Expect the fuel inlet of pressure stabilizing cavity, the outlet of the radial burners outer tube is directed toward in one end；The intermediate fuel pipe is fixed on adjustable
On cylinder, as adjustable cylinder moves together, to change between intermediate fuel pipe and the fuel inlet of fuel pressure stabilizing cavity
Distance.
10. a kind of autocontrol method based on claim 1 to 9 any one of them radial burners, including：
When monitoring the flame in radial burners exit far from jet expansion, when occurring putting out trend, instruction control step is sent out
Stepper motor driving is adjusted cylinder and moves downward, and the area of the fluid inlet of adjustable cylinder is made to reduce, to reduce into can
The fluid flow and flow velocity for adjusting cylinder, prevent flame to be blown out；And
When monitoring the flame in radial burners exit close to jet expansion, when there is tempering trend, instruction control step is sent out
Stepper motor driving is adjusted cylinder and moves upwards, and the area of the fluid inlet of adjustable cylinder is made to increase, to increase into can
The fluid flow and flow velocity for adjusting cylinder, prevent to be tempered.
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| CN108386870B CN108386870B (en) | 2019-12-20 |
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Cited By (1)
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| CN111964052A (en) * | 2019-05-19 | 2020-11-20 | 宁波方太厨具有限公司 | Injection pipe for gas stove |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111964052B (en) * | 2019-05-19 | 2021-11-26 | 宁波方太厨具有限公司 | Injection pipe for gas stove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108386870B (en) | 2019-12-20 |
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