CN204786409U - Gas flameless burner that can multistage regulatory work rate - Google Patents
Gas flameless burner that can multistage regulatory work rate Download PDFInfo
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- CN204786409U CN204786409U CN201520490389.2U CN201520490389U CN204786409U CN 204786409 U CN204786409 U CN 204786409U CN 201520490389 U CN201520490389 U CN 201520490389U CN 204786409 U CN204786409 U CN 204786409U
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Abstract
The utility model relates to a gas flameless burner that can multistage regulatory work rate, its characterized in that: it includes a gas sleeve pipe, an air sleeve pipe and a bull stick, air sleeve pipe coaxial sealing cover is established the gas sleeve pipe is outside, an air sheathed tube front end fixed connection flow control fixed disk, one side of air sheathed tube rear end is provided with an air intlet, gas sheathed tube front end is through the blunt body coupling of a steady flame the flow control fixed disk, one side of gas sheathed tube rear end is provided with gas import, the bull stick is coaxial rotationally to be set up gas cover intraduct, the front end of bull stick runs through the center and a fixed connection flow control carousel of flow control fixed disk, be provided with a plurality of openings on flow control carousel and the flow control fixed disk respectively, opening on the flow control fixed disk with different openings cooperation on the flow control carousel dish is used for controlling the flow of air and gas.
Description
Technical field
The utility model relates to a kind of flameless burner, particularly about a kind of can the Flameless gas burner of multistage regulating power.
Background technology
In recent years, the contradiction between the energy resource consumption that economic development brings and environment is obvious all the more, and especially air quality problems is subject to extensive concern.A large amount of NO that combustion process produces
xbe one of origin cause of formation of PM2.5, and can the environmental problems such as acid rain be caused.Flameless combustion (MILDcombustion, Flamelesscombustion) is a kind of novel clean-burning technology, effectively can reduce the discharged nitrous oxides in combustion process.Compared with traditional combustion mode, flameless combustion does not have visible flame front, and whole fire box temperature, brightness uniformity generally maintain 1200 degrees Celsius, avoid a large amount of thermal NO
xgenerate, and heat radiation heat exchange efficiency is high, flameholding noise is extremely low, is considered as one of most potential clean-burning technology by world burning circle.Set up flameless combustion and have two large key elements: one is that combustible needs to be preheated to the temperature higher than fuel self-ignition point before reacting; Two is that the equivalent proportion of combustible should a little less than 1 but can not be too low, otherwise oxygen concentration is too high is unfavorable for aphlogistic generation.Realize above-mentioned two large key elements by two kinds of approach: 1, combustible first carries out preheating and dilution before entering burner hearth, then with effluxvelocity faster, mixture is inputted burner hearth; 2, entrainment furnace high-temperature flue gas by high-speed jet and carry out preheating and dilution.
Can find out, aphlogistic realization needs the fuel/air mixture incidence rate higher than traditional combustion, generally should much larger than fuel flame spread speed.The maintenance of high-speed jet will bring the problem that burner pressure drop is large and power regulating range is little.This two problems is unresolved in current existing flameless burner.Such as, Chinese patent (application number 201410019516.0) proposes a kind of direct spray type gas flameless burner.The mode that in the middle of this invention utilizes, Gas Pipe and the multiple air hose parallel ATA of surrounding directly spray is burnt.But because combustion gas and air jet velocities are very high, and combustion gas straight tube diameter is less, and the pressure drop now produced is larger.When power diminishes, fuel incidence rate can not meet and realize aphlogistic requirement, and the power of therefore this invention can only regulate in certain scope.Chinese patent (application number 201210421560.5) proposes a kind of injection preheating type flameless burner.This invention needs, by jet-flow very at a high speed, to mix, finally could realize flameless combustion by hot-air injection to precombustion chamber.Once combustion power reduces, during jet-flow underspeed, enough air can not be sucked, and cause preheating not exclusively cannot realize flameless combustion and even cause burning insufficient.
Summary of the invention
For the problems referred to above, the purpose of this utility model be to provide the high and pressure drop of a kind of preheating burner hearth efficiency little can the Flameless gas burner of multistage regulating power.
For achieving the above object, the utility model by the following technical solutions: a kind of can the Flameless gas burner of multistage regulating power, it is characterized in that: it comprises a gas sleeve, a casing air and a bull stick; It is outside that described casing air co-axial seal is set in described gas sleeve; The front end of described casing air is fixedly connected with a flow-control fixed disk, and the side of the rear end of described casing air is provided with an air intlet; The front end of described gas sleeve connects described flow-control fixed disk by a steady flame bluff body, and the side of the rear end of described gas sleeve is provided with a fuel gas inlet; It is inner that described bull stick is coaxially arranged on described gas sleeve rotationally, and the front end of described bull stick is run through the center of described flow-control fixed disk and is fixedly connected with a flow-control rotating disk; Described flow-control rotating disk and flow-control fixed disk are respectively arranged with multiple opening; Opening on described flow-control fixed disk coordinates with the different openings on described flow-control rotating disk dish the flow controlling air and combustion gas.
The inside, front end of described bull stick is provided with an ignition electrode, and described bull stick is stretched out in the front end of described ignition electrode.
Described bull stick seals anchor tip with described gas sleeve by one and is connected.
Described flow-control fixed disk and flow-control rotating disk are all divided into the sector region of multiple homalographic; The different described sector region be positioned on described flow-control fixed disk is provided with different curved openings; The different described sector region be positioned on described flow-control rotating disk is provided with different curved or circular openings.
Opening shape on described flow-control rotating disk comprises the opening shape on flow-control fixed disk.
Can the Flameless gas burner of multistage regulating power, it is characterized in that: it comprises a gas sleeve, a casing air and a bull stick; Described bull stick is coaxially arranged on the inside of described casing air, the outside of described gas sleeve rotationally; The front end of described casing air is fixedly connected with a flow-control fixed disk, and the side of the rear end of described casing air is provided with an air intlet; The front end of described gas sleeve connects described flow-control fixed disk by a steady flame bluff body; The front end of described bull stick is fixedly connected with a flow-control rotating disk; Described flow-control rotating disk and flow-control fixed disk are respectively arranged with multiple opening; Opening on described flow-control fixed disk coordinates with the different openings on described flow-control rotating disk dish the flow controlling air and combustion gas.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model can control the mated condition of the opening on rotating disk and flow-control fixed disk by adjust flux, produce the jet of different flows and flow velocity, thus the adjustment of different fired state and power can be realized, and then reach the effect of rapidly pre-warming burner hearth.2, the utility model takes non-premix combustion technology to keep low NO simultaneously
xdischarge.3, the utility model structure is simple, and resistance is little, and cost is low and flexibility is high.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of the utility model flow-control fixed disk;
Fig. 3 is the structural representation of the utility model flow-control rotating disk.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model comprises gas sleeve 1, casing air 2 and bull stick 3 in a tubular form, and wherein, casing air 2 co-axial seal is set in the outside of gas sleeve 1.The front end of casing air 2 is fixedly connected with a flow-control fixed disk 4, and the side of rear end is provided with an air intlet 5.The front end of gas sleeve 1 controls fixed disk 4 by steady flame bluff body 6 connection traffic, and the side of rear end is provided with a fuel gas inlet 7.Bull stick 3 is coaxially arranged on the inside of gas sleeve 1 rotationally, and its front end is run through the center of flow-control fixed disk and is fixedly connected with a flow-control rotating disk 8.Flow-control rotating disk 8 and flow-control fixed disk 4 are respectively arranged with multiple opening (as shown in Figure 2 and Figure 3), and cooperatively interacting of both openings can produce the jet of different flow and flow velocity, to realize different fired states and power.
As shown in Figure 2, flow-control fixed disk 4 can be the sector region of multiple homalographic according to certain angular divisions, different sector regions is provided with the opening of different arcs.As shown in Figure 3, flow-control rotating disk 8 adopts the angular divisions identical with flow-control fixed disk 4 to become multiple sector region, and different sector regions is provided with different arcs or the opening of circle.In use procedure of the present utility model, rotate bull stick 3 and flow-control rotating disk 8 can be made to cooperatively interact with the opening on flow-control fixed disk 4, thus obtain the jet of different in flow rate.
Further, can arrange an ignition electrode 9 in the inside, front end of bull stick 3, bull stick 3 is stretched out in the front end of ignition electrode 9.
Further, bull stick 3 can seal anchor tip 10 by one with gas sleeve 1 and be connected, and when needs regulate combustion power of the present utility model, need unclamp sealing anchor tip 10, then rotate bull stick 3, tighten sealing anchor tip 10 after adjustment again.
Further, flow-control fixed disk 4 and flow-control rotating disk 8 all can adopt 60 ° of angles to carry out the division of sector region, thus have the power adjusting of two scopes under achieving fired state.
Further, the opening shape on flow-control rotating disk 8 comprises the opening shape on flow-control fixed disk, to ensure maximum flow area.
In above-described embodiment, also can change the position relationship between bull stick 3 and gas sleeve 1, be arranged on the outside of gas sleeve 1, the inside of casing air 2 rotationally by bull stick 3, thus obtain a variant based on above-described embodiment.
Burner hearth in use, first should be heated to more than combustion gas self-ignition point in the mode of flaming combustion by the utility model.Combustion gas and air enter burner respectively by gas sleeve 1 and casing air 2.Now, a ' of flow-control rotating disk 8 should overlap with a of flow-control fixed disk 4, then flow section is maximum, and flowing velocity is minimum, adds the auxiliary of steady flame bluff body 6, can produce stable flaming combustion state.Also can not be excessive and flame-out because of flow velocity even if carry out burning with very large power.When hearth wall surface temperature rises to more than combustion gas self-ignition point, rotating bull stick 3 makes the b ' of flow-control rotating disk 8 overlap with a of flow-control fixed disk 4, the flow section of air and combustion gas all significantly reduces, both flow velocitys are improved all greatly, burner hearth is entered in the mode of high-speed jet, entrainment the high-temperature flue gas in stove in a large number, thus realize flameless combustion.Although now the resistance of burner can increase, due to the local losses of a just sudden contraction, burner overall resistance can't increase considerably.After tested, the amplitude that resistance increases is about 7%.When power demand diminishes, can be regulated by the air inflow reducing air and combustion gas, but once lower than certain critical value, the incidence rate of now combustion gas and air cannot meet and realize aphlogistic condition, therefore need to reduce flow section further to improve flow velocity.Now, as long as rotate bull stick 3, the c ' of flow-control rotating disk 8 is overlapped with a of flow-control fixed disk 4, then can improve flowing velocity again, continue to maintain smouldering state.Therefore, design of the present utility model will make this burner for the power bracket wider than existing flameless burner.
The utility model is only described with above-described embodiment; the structure of each parts, setting position and connection thereof all can change to some extent; on the basis of technical solutions of the utility model; all improvement of carrying out individual part according to the utility model principle and equivalents, all should not get rid of outside protection domain of the present utility model.
Claims (6)
1. can the Flameless gas burner of multistage regulating power, it is characterized in that: it comprises a gas sleeve, a casing air and a bull stick; It is outside that described casing air co-axial seal is set in described gas sleeve; The front end of described casing air is fixedly connected with a flow-control fixed disk, and the side of the rear end of described casing air is provided with an air intlet; The front end of described gas sleeve connects described flow-control fixed disk by a steady flame bluff body, and the side of the rear end of described gas sleeve is provided with a fuel gas inlet; It is inner that described bull stick is coaxially arranged on described gas sleeve rotationally, and the front end of described bull stick is run through the center of described flow-control fixed disk and is fixedly connected with a flow-control rotating disk; Described flow-control rotating disk and flow-control fixed disk are respectively arranged with multiple opening; Opening on described flow-control fixed disk coordinates with the different openings on described flow-control rotating disk dish the flow controlling air and combustion gas.
2. a kind of as claimed in claim 1 can the Flameless gas burner of multistage regulating power, it is characterized in that: the inside, front end of described bull stick is provided with an ignition electrode, described bull stick is stretched out in the front end of described ignition electrode.
3. a kind of as claimed in claim 1 or 2 can the Flameless gas burner of multistage regulating power, it is characterized in that: described bull stick seals anchor tip with described gas sleeve by one and is connected.
4. a kind of as claimed in claim 1 or 2 can the Flameless gas burner of multistage regulating power, it is characterized in that: described flow-control fixed disk and flow-control rotating disk are all divided into the sector region of multiple homalographic; The different described sector region be positioned on described flow-control fixed disk is provided with different curved openings; The different described sector region be positioned on described flow-control rotating disk is provided with different curved or circular openings.
5. a kind of as claimed in claim 4 can the Flameless gas burner of multistage regulating power, it is characterized in that: the opening shape on described flow-control rotating disk comprises the opening shape on flow-control fixed disk.
6. can the Flameless gas burner of multistage regulating power, it is characterized in that: it comprises a gas sleeve, a casing air and a bull stick; Described bull stick is coaxially arranged on the inside of described casing air, the outside of described gas sleeve rotationally; The front end of described casing air is fixedly connected with a flow-control fixed disk, and the side of the rear end of described casing air is provided with an air intlet; The front end of described gas sleeve connects described flow-control fixed disk by a steady flame bluff body; The front end of described bull stick is fixedly connected with a flow-control rotating disk; Described flow-control rotating disk and flow-control fixed disk are respectively arranged with multiple opening; Opening on described flow-control fixed disk coordinates with the different openings on described flow-control rotating disk dish the flow controlling air and combustion gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490389.2U CN204786409U (en) | 2015-07-08 | 2015-07-08 | Gas flameless burner that can multistage regulatory work rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490389.2U CN204786409U (en) | 2015-07-08 | 2015-07-08 | Gas flameless burner that can multistage regulatory work rate |
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| CN204786409U true CN204786409U (en) | 2015-11-18 |
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| CN201520490389.2U Active CN204786409U (en) | 2015-07-08 | 2015-07-08 | Gas flameless burner that can multistage regulatory work rate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461742A (en) * | 2017-08-09 | 2017-12-12 | 苏州博墨热能产品有限公司 | It is classified nonflame low nitrogen burning head |
| CN110260321A (en) * | 2019-06-30 | 2019-09-20 | 华中科技大学 | It is a kind of to realize ultralow NOxThe rotary flameless burner of discharge |
| CN110345478A (en) * | 2019-07-23 | 2019-10-18 | 华中科技大学 | A kind of flameless burner of the steady fiery device of band oscillation chamber |
-
2015
- 2015-07-08 CN CN201520490389.2U patent/CN204786409U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461742A (en) * | 2017-08-09 | 2017-12-12 | 苏州博墨热能产品有限公司 | It is classified nonflame low nitrogen burning head |
| CN110260321A (en) * | 2019-06-30 | 2019-09-20 | 华中科技大学 | It is a kind of to realize ultralow NOxThe rotary flameless burner of discharge |
| CN110260321B (en) * | 2019-06-30 | 2020-06-02 | 华中科技大学 | Realize ultralow NOxVented rotary flameless combustor |
| CN110345478A (en) * | 2019-07-23 | 2019-10-18 | 华中科技大学 | A kind of flameless burner of the steady fiery device of band oscillation chamber |
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