CN215831904U - Low-load self-adaptive micro-oil burner - Google Patents
Low-load self-adaptive micro-oil burner Download PDFInfo
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- CN215831904U CN215831904U CN202122325418.8U CN202122325418U CN215831904U CN 215831904 U CN215831904 U CN 215831904U CN 202122325418 U CN202122325418 U CN 202122325418U CN 215831904 U CN215831904 U CN 215831904U
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Abstract
The utility model relates to a low-load self-adaptive micro-oil burner, which comprises an oil inlet pipeline, a pilot overflow valve, a micro-oil combustion-supporting air duct, a self-operated micro-oil spray head, an ignition gun and a combustion-supporting air inlet pipe, wherein the pilot overflow valve is arranged on the oil inlet pipeline; the self-operated micro-oil nozzle comprises a nozzle pipe and a flow guide bluff body, wherein the flow guide bluff body is installed at the outlet end of the nozzle pipe, the flow guide bluff body is provided with a connecting rod, the connecting rod is movably inserted into the nozzle pipe, a self-closing spring is sleeved on the connecting rod, a fixing nut is installed at the end part of the connecting rod, and the fixing nut is fixedly connected with the self-closing spring. The micro-oil burner can realize two functions of ignition and ultra-low load stable combustion by adjusting oil pressure and further adjusting the flow of fuel oil when the boiler operates at low load.
Description
Technical Field
The utility model relates to a low-load self-adaptive micro-oil burner, and belongs to the technical field of boiler micro-oil burners.
Background
With the gradual increase of the proportion of the Chinese comprehensive energy, the requirement on the wide-load deep peak regulation capability of large thermal power generating units, particularly supercritical thermal power generating units, is higher and higher, the condition that the boiler and related main and auxiliary equipment of the unit are always in a lower load and a larger load change rate is realized, and the unit is required to have a lower load limit value. The requirement of extremely low load operation and large load change rate is high, and the requirement on the low-load combustion stabilizing effect of the combustor is high. When the load is low, the micro-oil combustion supporting is an effective ultra-low load operation mode, the problem that the ultra-low load stable fuel consumption is further reduced is to be solved urgently, and the self-adaptive performance of the traditional micro-oil combustor is poor when the load rate of the boiler is greatly changed.
In summary, the existing micro-oil burner has poor self-adaptive performance, cannot change along with the change of boiler load, and the long-time ultra-low load stable-combustion oil consumption also needs to be further reduced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a low-load self-adaptive micro-oil burner, the oil pressure in an oil inlet pipeline is regulated by a pilot overflow valve and then enters a self-operated micro-oil nozzle, a flow guide blunt body is jacked open to form an atomizing circumferential seam after flowing out of a circular through hole, fuel oil flows out of the atomizing circumferential seam, is wrapped by combustion-supporting air and flows out of the atomizing circumferential seam, and is finally ignited by an ignition gun, and the micro-oil burner can realize two functions of ignition and ultra-low load stable combustion by adjusting the oil pressure during low-load operation of a boiler.
The technical scheme for solving the technical problems is as follows: a low-load self-adaptive micro-oil burner comprises an oil inlet pipeline, a pilot overflow valve, a micro-oil combustion-supporting air channel, a self-operated micro-oil spray head, an ignition gun and a combustion-supporting air inlet pipe, wherein fuel oil is introduced into the oil inlet pipeline;
the self-operated micro-oil sprayer comprises a sprayer pipe and a flow guide bluff body, wherein one end of the sprayer pipe is an inlet end of the self-operated micro-oil sprayer, the flow guide bluff body is installed at an outlet end of the sprayer pipe, the flow guide bluff body is provided with a connecting rod, the connecting rod is movably inserted into the sprayer pipe, a self-closing spring is sleeved on the connecting rod, a fixing nut is installed at the end part of the connecting rod, and the fixing nut is fixedly connected with one end of the self-closing spring.
On the basis of the technical scheme, the utility model can be further improved as follows:
furthermore, a flow equalizing pore plate is installed at the outlet end of the spray nozzle pipe, a connecting rod of the flow guide bluff body is movably inserted with the flow equalizing pore plate, and circular through holes which are uniformly distributed in an annular mode are formed in the flow equalizing pore plate.
Further, the diameter of the round through hole is 1-2 mm; when fuel oil passes through the round through hole, an atomization circumferential weld is formed between the flow guide bluff body and the flow equalizing pore plate, the width of the atomization circumferential weld is 0.5-1.2 mm, and the flow range of the fuel oil is 40-80 kg/h.
Furthermore, the pilot overflow valve is an electromagnetic control valve, the pilot overflow valve is associated with the load of the boiler, the opening of the pilot overflow valve can be automatically controlled and adjusted according to the load condition of the boiler, and the use is more convenient.
Furthermore, a pressure reducing valve is arranged on the combustion-supporting air inlet pipe, and the pressure in the combustion-supporting air inlet pipe is stabilized at 1.5kPa through the adjustment of the pressure reducing valve.
The control method of the low-load self-adaptive micro-oil combustor comprises the following steps:
1) in an initial state, the self-closing spring is in a natural state, and the flow guide blunt body is covered at the outlet of the spray head pipe;
2) when the micro-oil burner works, fuel oil is introduced into the oil inlet pipeline, and the oil pressure of the fuel oil is adjusted by adjusting the opening of the pilot overflow valve;
3) the fuel oil with adjusted oil pressure enters the self-operated tiny-oil nozzle, the fuel oil flows out from the outlet end of the nozzle pipe, the self-closing spring contracts, and the flow guide blunt body is pushed open to form an atomization circumferential seam;
4) combustion-supporting air is introduced into the combustion-supporting air inlet pipe through the tiny-oil combustion-supporting air duct, and the fuel oil flows out through the atomizing annular seam, is wrapped by the combustion-supporting air and flows out, and is finally ignited by the ignition gun;
5) when the micro-oil burner stops working, the pilot overflow valve is closed, no fuel oil passes through the self-operated micro-oil nozzle, the self-closing spring restores to a natural state, the guide blunt body is covered at the outlet of the nozzle pipe again, and the self-closing spring is utilized to realize automatic closing, so that fuel oil leakage is avoided, and safety is guaranteed.
Furthermore, the oil pressure adjusting range of the pilot-operated overflow valve is 0.8-1.6 MPa, the pilot-operated overflow valve is an electromagnetic control valve, the opening of the pilot-operated overflow valve is related to the boiler load, the oil pressure is adjusted to 1.6MPa by the pilot-operated overflow valve when the boiler load is 0% -10%, and the oil pressure is reduced to 0.8MPa by the pilot-operated overflow valve when the boiler load is 10% -30%, so that the ultra-low load combustion-supporting effect is realized.
Furthermore, a flow equalizing pore plate is installed at the outlet end of the spray nozzle pipe, a connecting rod of the flow guide bluff body is movably inserted into the flow equalizing pore plate, circular through holes which are uniformly distributed in an annular mode are formed in the flow equalizing pore plate, and the diameter of each circular through hole is 1-2 mm; when fuel oil passes through the round through hole, an atomizing annular seam is formed between the flow guide bluff body and the plurality of flow equalizing pore plates, the width of the atomizing annular seam is 0.5-1.2 mm, and the flow range of the fuel oil is 40-80 kg/h.
Furthermore, a pressure reducing valve is arranged on the combustion-supporting air inlet pipe, combustion-supporting air is introduced into the combustion-supporting air inlet pipe, the combustion-supporting air is taken from primary air, and the pressure of the combustion-supporting air is regulated to 1.5kPa through the pressure reducing valve.
The utility model has the beneficial effects that: when the micro-oil burner is used, oil pressure of an oil inlet pipeline is regulated by a pilot overflow valve and then enters a self-operated micro-oil nozzle, a flow guide blunt body is pushed open to form an atomizing circumferential seam after flowing out of uniformly distributed circular through holes, fuel oil flows out of the atomizing circumferential seam, is wrapped by combustion-supporting air and flows out, and is finally ignited by an ignition gun, and the micro-oil burner adjusts the oil pressure when the boiler operates at low load so as to adjust the flow of the fuel oil.
1) The micro-oil burner can realize two functions of ignition and ultra-low load stable combustion, and realize the wide-load operation of the boiler;
2) the boiler can adapt to different load sections by simply adjusting oil pressure in the load change process;
3) the self-operated micro-oil nozzle can be automatically closed, so that fuel oil leakage is avoided, and safety is ensured;
4) the micro-oil burner is simple and convenient to transform and maintain.
Drawings
FIG. 1 is a schematic diagram of the low-load adaptive micro-oil combustor in the embodiment;
FIG. 2 is a schematic cross-sectional view of the self-operated micro-oil nozzle in the embodiment;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
in the figure, 1 an oil inlet pipeline, 2 a pilot operated overflow valve, 3 a tiny-oil combustion-supporting air duct, 4 a self-operated tiny-oil spray head, 5 an ignition gun and 6 a combustion-supporting air inlet pipe;
401 is a self-closing spring, 402 is an atomization annular seam, 403 is a guide bluff body, 404 is a connecting rod, 405 is a circular through hole, 406 is a spray head pipe, 407 is a flow equalizing pore plate, and 408 is a fixing nut.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the utility model more comprehensible. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
As shown in the figure, the low-load self-adaptive micro-oil burner comprises an oil inlet pipeline 1, a pilot overflow valve 2, a micro-oil combustion-supporting air duct 3, a self-operated micro-oil spray nozzle 4, an ignition gun 5 and a combustion-supporting air inlet pipe 6, wherein fuel oil is introduced into the oil inlet pipeline 1, the pilot overflow valve 2 is installed on the oil inlet pipeline 1, the outlet of the pilot overflow valve 2 is communicated with the inlet of the self-operated micro-oil spray nozzle 4, the self-operated micro-oil spray nozzle 4 and the ignition gun 5 are installed inside the micro-oil combustion-supporting air duct 3, the combustion-supporting air inlet pipe 6 is communicated with the micro-oil combustion-supporting air duct 3, and the micro-oil combustion-supporting air duct 3 is communicated with a boiler;
the self-operated micro-oil sprayer 4 comprises a sprayer tube 406 and a flow guide bluff body 403, one end of the sprayer tube 406 is an inlet end of the self-operated micro-oil sprayer 4, the flow guide bluff body 403 is installed at an outlet end of the sprayer tube 406, a connecting rod 404 is arranged on the flow guide bluff body 403, the connecting rod 404 is movably inserted into the sprayer tube 406, a self-closing spring 401 is sleeved on the connecting rod 404, a fixing nut 408 is installed at the end of the connecting rod 404, and the fixing nut 408 is fixedly connected with one end of the self-closing spring 401.
Specifically, a flow equalizing pore plate 407 is installed at the outlet end of the nozzle tube 406, the connecting rod 404 of the flow guide bluff body 403 is movably inserted into the flow equalizing pore plate 407, and circular through holes 405 uniformly distributed in an annular shape are formed in the flow equalizing pore plate 407.
Specifically, the diameter of the circular through hole 405 is 1-2 mm; when fuel oil passes through the round through hole 405, an atomization circular seam 402 is formed between the guide bluff body 403 and the flow equalizing pore plate 407, the width of the atomization circular seam 402 is 0.5-1.2 mm, and the flow range of the fuel oil is 40-80 kg/h.
Specifically, the pilot overflow valve 2 is an electromagnetic control valve, and the pilot overflow valve 2 is associated with the boiler load.
Specifically, a pressure reducing valve is arranged on the combustion-supporting air inlet pipe 6.
The control method of the low-load self-adaptive micro-oil combustor comprises the following steps:
1) in an initial state, the self-closing spring 401 is in a natural state, and the flow guide blunt body 403 is covered at an outlet of the spray head pipe 406;
2) when the micro-oil burner works, fuel oil is introduced into the oil inlet pipeline 1, and the oil pressure of the fuel oil is adjusted by adjusting the opening degree of the pilot overflow valve 2;
3) the fuel oil with adjusted oil pressure enters the self-operated tiny-oil nozzle 4, the fuel oil flows out from the outlet end of the nozzle pipe 406, the self-closing spring 401 contracts, and the flow guide blunt body 403 is pushed open to form an atomization circumferential seam 402;
4) combustion-supporting air is introduced into the combustion-supporting air inlet pipe 6 through the tiny-oil combustion-supporting air duct 3, the fuel oil flows out through the atomizing annular seam 402, is wrapped by the combustion-supporting air and flows out, and is finally ignited by the ignition gun 5;
5) when the micro-oil burner stops working, the pilot overflow valve 2 is closed, no fuel oil passes through the self-operated micro-oil nozzle 4, the self-closing spring 401 is restored to a natural state, the guide blunt body 403 is covered at the outlet of the nozzle pipe 406 again, and the self-closing spring 401 is used for realizing automatic closing, so that fuel oil leakage is avoided, and safety is guaranteed.
Specifically, the adjustment range of the pilot operated overflow valve 2 to the oil pressure is 0.8-1.6 Mpa, the pilot operated overflow valve 2 is an electromagnetic control valve, the opening degree of the pilot operated overflow valve 2 is related to the boiler load, the pilot operated overflow valve 2 adjusts the oil pressure to 1.6Mpa when the boiler load is 0% -10%, and the pilot operated overflow valve 2 adjusts the oil pressure to 0.8Mpa when the boiler load is 10% -30%.
Specifically, a flow equalizing pore plate 407 is mounted at the outlet end of the nozzle tube 406, the connecting rod 404 of the flow guide bluff body 403 is movably inserted into the flow equalizing pore plate 407, circular through holes 405 uniformly distributed in an annular shape are formed in the flow equalizing pore plate 407, and the diameter of each circular through hole 405 is 1-2 mm; when fuel oil passes through the round through hole 405, an atomizing annular seam 402 is formed between the guide bluff body 403 and the plurality of flow equalizing pore plates 407, the width of the atomizing annular seam 402 is 0.5-1.2 mm, and the flow range of the fuel oil is 40-80 kg/h.
Specifically, a pressure reducing valve is arranged on the combustion-supporting air inlet pipe 6, combustion-supporting air is introduced into the combustion-supporting air inlet pipe 6, the combustion-supporting air is taken from primary air, and the pressure of the combustion-supporting air is regulated to 1.5kPa through the pressure reducing valve.
The micro-oil burner can realize two functions of ignition and ultra-low load stable combustion by adjusting the oil pressure and further adjusting the flow of fuel oil when the boiler operates at low load, and has load self-adaptive capacity in a low-load section.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. The low-load self-adaptive micro-oil burner is characterized by comprising an oil inlet pipeline (1), a pilot overflow valve (2), a micro-oil combustion-supporting air duct (3), a self-operated micro-oil spray head (4), an ignition gun (5) and a combustion-supporting air inlet pipe (6), wherein fuel oil is introduced into the oil inlet pipeline (1), the pilot overflow valve (2) is installed on the oil inlet pipeline (1), the outlet of the pilot overflow valve (2) is communicated with the inlet of the self-operated micro-oil spray head (4), the self-operated micro-oil spray head (4) and the ignition gun (5) are installed inside the micro-oil combustion-supporting air duct (3), the combustion-supporting air inlet pipe (6) is communicated with the micro-oil combustion-supporting air duct (3), and the micro-oil combustion-supporting air duct (3) is communicated with a boiler;
the self-operated micro-oil sprayer (4) comprises a sprayer pipe (406) and a flow guide bluff body (403), one end of the sprayer pipe (406) is an inlet end of the self-operated micro-oil sprayer (4), the flow guide bluff body (403) is installed at an outlet end of the sprayer pipe (406), a connecting rod (404) is arranged on the flow guide bluff body (403), the connecting rod (404) is movably inserted into the sprayer pipe (406), a self-closing spring (401) is sleeved on the connecting rod (404), a fixing nut (408) is installed at the end of the connecting rod (404), and the fixing nut (408) is fixedly connected with one end of the self-closing spring (401).
2. The low-load self-adaptive micro-oil burner according to claim 1, wherein a flow equalizing pore plate (407) is installed at the outlet end of the nozzle pipe (406), a connecting rod (404) of the flow guide bluff body (403) is movably inserted into the flow equalizing pore plate (407), and circular through holes (405) are uniformly distributed in an annular manner on the flow equalizing pore plate (407).
3. The low-load self-adaptive micro-oil burner as claimed in claim 2, wherein the diameter of the circular through hole (405) is 1-2 mm; when fuel oil passes through the round through hole (405), an atomization circular seam (402) is formed between the flow guide blunt body (403) and the flow equalizing pore plate (407), the width of the atomization circular seam (402) is 0.5-1.2 mm, and the flow range of the fuel oil is 40-80 kg/h.
4. The low-load adaptive micro-oil burner according to claim 1, characterized in that the pilot overflow valve (2) is an electromagnetic control valve, and the pilot overflow valve (2) is associated with the boiler load.
5. The low-load self-adaptive micro-oil burner as claimed in claim 1, wherein a pressure reducing valve is arranged on the combustion supporting air inlet pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122325418.8U CN215831904U (en) | 2021-09-24 | 2021-09-24 | Low-load self-adaptive micro-oil burner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122325418.8U CN215831904U (en) | 2021-09-24 | 2021-09-24 | Low-load self-adaptive micro-oil burner |
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| CN215831904U true CN215831904U (en) | 2022-02-15 |
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| CN202122325418.8U Active CN215831904U (en) | 2021-09-24 | 2021-09-24 | Low-load self-adaptive micro-oil burner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654039A (en) * | 2021-09-24 | 2021-11-16 | 杭州浙大天元科技有限公司 | Low-load self-adaptive micro-oil burner and control method thereof |
| CN113654039B (en) * | 2021-09-24 | 2024-06-25 | 杭州浙大天元科技有限公司 | Low-load self-adaptive micro-oil burner and control method thereof |
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2021
- 2021-09-24 CN CN202122325418.8U patent/CN215831904U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654039A (en) * | 2021-09-24 | 2021-11-16 | 杭州浙大天元科技有限公司 | Low-load self-adaptive micro-oil burner and control method thereof |
| CN113654039B (en) * | 2021-09-24 | 2024-06-25 | 杭州浙大天元科技有限公司 | Low-load self-adaptive micro-oil burner and control method thereof |
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