Medium atomization device for ultra-low oxygen combustion
By designing the venturi and U-shaped heat exchange tube structures of the media atomization device, the problems of uneven mixing between fuel and gas and lack of preheating are solved, efficient and stable ultra-low oxygen combustion is achieved, and maintenance process is simplified.
Patent Information
- Application Number
- CN202510745425.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-05
- Publication Date
- 2025-08-15
AI Technical Summary
When the existing combustion devices are burning ultra-low oxygen, the fuel and gas are mixed unevenly and the atomization effect is poor, resulting in low combustion efficiency, insufficient stability, and lack of effective preheating and heat exchange mechanisms.
A medium atomization device is designed, including feed pipe, mixing pipe, atomization nozzle and heat exchange assembly. Through the sliding combination of the continuous Venturi tube structure and the U-shaped heat exchange pipe, the two accelerated atomization and preheating of fuel and gas are realized, and the attachments are automatically removed through the cleaning assembly to ensure the heat exchange effect.
It significantly improves the mixing uniformity and combustion efficiency of fuel and gas, enhances combustion stability, simplifies maintenance processes, and reduces usage costs.
Smart Images
Figure CN120488246A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of combustion devices, in particular to a medium atomization device for ultra-low oxygen combustion. Background Art
[0002] In the field of industrial combustion, ultra-low oxygen combustion technology is widely used in various types of combustion equipment due to its high efficiency, energy saving and low pollution emissions. However, when achieving ultra-low oxygen combustion, existing combustion devices often face problems such as uneven mixing of fuel and gas and poor atomization effect, resulting in low combustion efficiency, insufficient stability, and even incomplete combustion, which increases pollutant emissions. In addition, existing atomization devices usually lack effective preheating and heat exchange mechanisms, and the fuel cannot be fully preheated before entering the combustion zone, further affecting the combustion effect. Therefore, the present invention provides a medium atomization device for ultra-low oxygen combustion. Summary of the Invention
[0003] In response to the shortcomings of the existing technology, the present invention provides a medium atomization device for ultra-low oxygen combustion, which overcomes the problems of uneven mixing of fuel and gas, poor atomization effect, etc., which lead to low combustion efficiency, insufficient stability, and lack of effective preheating and heat exchange mechanisms.
[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a medium atomization device for ultra-low oxygen combustion, comprising a feed pipe, an air feed pipe, a liquid feed pipe, a mixing pipe, a delivery pipe, and an atomizing nozzle, a heat exchange component and a cleaning component are provided on the mixing pipe, the heat exchange component comprises an annular diversion chamber 2 and an air guide pipe 1, three U-shaped heat exchange tubes 1 and three U-shaped heat exchange tubes 2 are provided between the annular diversion chamber 2 and the air guide pipe 1, the U-shaped heat exchange tube 1 and the U-shaped heat exchange tube 2 are both slidably matched with the mixing pipe, and the U-shaped heat exchange tube 1 is fixed A positioning slide 1 is fixedly provided, a positioning slide 2 is fixedly provided on the U-shaped heat exchange tube 2, a positioning unit is provided between the positioning slide 1 and the positioning slide 2, the positioning unit is used to adjust the positions of the U-shaped heat exchange tube 1 and the U-shaped heat exchange tube 2 in the mixing tube, the cleaning assembly includes six arc-shaped long slides slidably installed on the mixing tube in a circumferential array, circular scrapers are slidably installed on the U-shaped heat exchange tube 1 and the U-shaped heat exchange tube 2, and linkage strips are fixedly provided on the circular scrapers, which slide in cooperation with the corresponding arc-shaped long slides respectively.
[0005] Furthermore, the two ends of the feed pipe are fixedly connected to the air feed pipe and the mixing pipe respectively, the two ends of the delivery pipe are fixedly connected to the mixing pipe and the atomizing nozzle respectively, the axes of the feed pipe, the air feed pipe, the mixing pipe, the delivery pipe and the atomizing nozzle are in the same straight line, the liquid feed pipe is fixedly connected to the feed pipe, and the axis of the liquid feed pipe is perpendicular to the axis of the feed pipe.
[0006] Furthermore, the inner diameters of the air supply pipe and the mixing pipe are equal, the inner diameters of the feed pipe and the delivery pipe are equal, the inner diameter of the air supply pipe is larger than the inner diameter of the feed pipe, a venturi tube 1 is formed between the air supply pipe, the feed pipe and the mixing pipe, and a venturi tube 2 is formed between the mixing pipe, the delivery pipe and the atomizing nozzle.
[0007] Furthermore, the three U-shaped heat exchange tubes 1 and the three U-shaped heat exchange tubes 2 are arranged in a circular array relative to the axis of the mixing tube, the U-shaped heat exchange tube 1 and the U-shaped heat exchange tube 2 are arranged at intervals, and the U-shaped heat exchange tube 1 and the U-shaped heat exchange tube 2 are each composed of a long tube and two short tubes, the two short tubes are arranged at both ends of the corresponding long tubes, the long tubes are all arranged inside the mixing tube, and the short tubes are all slidably matched with the mixing tube.
[0008] Furthermore, the first and second positioning slide plates are both in sliding cooperation with the outer circumferential surface of the mixing tube, and return springs are symmetrically provided between the first and second positioning slide plates and the mixing tube.
[0009] Furthermore, the positioning unit includes six positioning gears, and positioning racks are fixedly provided on positioning slide 1 and positioning slide 2. Six strip support plates 1 are also fixedly provided in a circular array on the mixing tube. The positioning gears are rotatably installed on the corresponding strip support plates 1, and the positioning gears form a gear rack pair with the corresponding positioning racks.
[0010] Furthermore, the positioning unit also includes a positioning gear ring, three strip support plates 2 are fixedly arranged in a circular array on the mixing tube, the positioning gear rings are rotatably connected to the strip support plates 2, three sector racks are fixedly arranged in a circular array on the positioning gear ring, and driven gears are fixedly installed on the sides of the positioning gears. When the driven gears and the corresponding sector racks are engaged, they form a gear rack pair.
[0011] Furthermore, there is no gap between the arc-shaped long slide and the mixing tube, and an annular slide is slidably installed on the mixing tube. The end of the arc-shaped long slide farthest from the atomizing nozzle is fixedly connected to the annular slide. A cleaning screw is rotatably installed on the mixing tube, and the cleaning screw and the annular slide form a spiral pair.
[0012] Furthermore, annular diversion chamber 1 and annular diversion chamber 2 are respectively fixedly arranged at the two ends of the mixing tube, annular diversion chamber 1 is located at the end of the mixing tube closest to the atomizing nozzle, and annular diversion chamber 1 is symmetrically fixed with air guide pipe 1, and annular diversion chamber 2 is symmetrically fixed with air guide pipe 2.
[0013] The beneficial effects of the present invention compared with the prior art are as follows: (1) By providing a continuous Venturi tube, the present invention can accelerate the atomization of gas and fuel twice, significantly improving the mixing uniformity of fuel and gas, thereby enhancing combustion efficiency and stability. (2) By providing a heat exchange component, the present invention can preheat the fuel in the mixing tube, and at the same time, by adjusting its position to change the swirl direction, further improving the heat exchange efficiency and the preheating effect of the fuel, which is conducive to the realization of ultra-low oxygen combustion. (3) By providing a cleaning component, the present invention can automatically remove the attachments on the U-shaped heat exchange tube, ensuring a long-lasting and stable heat exchange effect, while simplifying the maintenance process and reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0015] Figure 2 It is a front view of the overall structure of the present invention.
[0016] Figure 3 It is a structural schematic diagram of the mixing tube of the present invention.
[0017] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.
[0018] Figure 5 It is a structural schematic diagram of the arc-shaped long slide plate of the present invention.
[0019] Figure 6 for Figure 5 A partial enlarged schematic diagram of point B in the middle.
[0020] Figure 7 Schematic diagram of the structure inside the mixing tube of the present invention.
[0021] Figure 8 for Figure 7 A partial enlarged schematic diagram of point C in the middle.
[0022] Figure 9 It is a structural schematic diagram of the U-shaped heat exchange tube of the present invention.
[0023] Reference numerals: 101 - feeding pipe; 102 - air feeding pipe; 103 - liquid feeding pipe; 104 - mixing pipe; 105 - delivery pipe; 106 - atomizing nozzle; 107 - annular diversion chamber 1; 108 - annular diversion chamber 2; 109 - air guide pipe 1; 110 - air guide pipe 2; 111 - arc-shaped long slide; 112 - annular slide; 113 - cleaning screw; 114 - cleaning motor; 115 - adjustment gear ring; 11 6-adjusting slide 1; 117-adjusting slide 2; 118-U-shaped heat exchange tube 1; 119-U-shaped heat exchange tube 2; 120-transmission gear; 121-adjusting motor; 122-sector rack; 123-driven gear; 124-adjusting gear; 125-adjusting rack; 126-reset spring; 127-strip support plate 1; 128-strip support plate 2; 129-circular scraper; 130-linkage strip plate. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0025] Example: Reference Figures 1-9 A medium atomization device for ultra-low oxygen combustion includes a feeding pipe 101, on which an air feeding pipe 102, a liquid feeding pipe 103, a mixing pipe 104, a delivery pipe 105, and an atomizing nozzle 106 are provided. The two ends of the feeding pipe 101 are fixedly connected to the air feeding pipe 102 and the mixing pipe 104 respectively, and the two ends of the delivery pipe 105 are fixedly connected to the mixing pipe 104 and the atomizing nozzle 106 respectively. The axes of the feeding pipe 101, the air feeding pipe 102, the mixing pipe 104, the delivery pipe 105, and the atomizing nozzle 106 are in the same straight line, the liquid feeding pipe 103 is fixedly connected to the feeding pipe 101, and the axis of the liquid feeding pipe 103 is perpendicular to the axis of the feeding pipe 101.
[0026] The inner diameters of the air supply pipe 102 and the mixing pipe 104 are equal, the inner diameters of the feed pipe 101 and the delivery pipe 105 are equal, the inner diameter of the air supply pipe 102 is larger than the inner diameter of the feed pipe 101, and a Venturi tube 1 is formed between the air supply pipe 102, the feed pipe 101, and the mixing pipe 104, and a Venturi tube 2 is formed between the mixing pipe 104, the delivery pipe 105, and the atomizing nozzle 106.
[0027] The gas enters the feed pipe 101 through the air supply pipe 102, and the fuel enters the feed pipe 101 along the liquid supply pipe 103 under the action of the air pressure in the feed pipe 101. The gas and fuel enter the mixing pipe 104 along the feed pipe 101. Under the action of the air supply pipe 102, the feed pipe 101, and the mixing pipe 104, the gas and fuel are atomized and mixed when entering the mixing pipe 104. The atomized and mixed fuel enters the delivery pipe 105 and is finally ejected from the atomizing nozzle 106. Under the action of the mixing pipe 104, the delivery pipe 105, and the atomizing nozzle 106, the atomized and mixed fuel is accelerated to atomize again when entering the atomizing nozzle 106, thereby improving the mixing effect of the fuel and gas.
[0028] A heat exchange assembly is provided on the mixing tube 104, and the heat exchange assembly includes an annular diversion chamber 2 108 and an air guide tube 1 109. Three U-shaped heat exchange tubes 118 and three U-shaped heat exchange tubes 2 119 are provided between the annular diversion chamber 2 108 and the air guide tube 1 109. The U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 are both slidably matched with the mixing tube 104. The three U-shaped heat exchange tubes 118 and the three U-shaped heat exchange tubes 2 119 are all arranged in a circular array relative to the axis of the mixing tube 104. The U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 are arranged at intervals. The U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 are both composed of a long tube and two short tubes. The two short tubes are arranged at both ends of the corresponding long tube. The long tubes are both arranged inside the mixing tube 104, and the short tubes are both slidably matched with the mixing tube 104.
[0029] A positioning slide 116 is fixedly provided on the U-shaped heat exchange tube 118, and a positioning slide 2 117 is fixedly provided on the U-shaped heat exchange tube 119. The positioning slide 116 and the positioning slide 2 117 are both slidably matched with the outer circumferential surface of the mixing tube 104. The positioning slide 116 and the positioning slide 2 117 are symmetrically provided with a return spring 126 between the mixing tube 104. In the initial position, the return spring 126 is not compressed. At this time, the positioning slide 116 and the positioning slide 2 117 are both located at the position farthest from the axis of the mixing tube 104, that is, at this time, the U-shaped heat exchange tube 118 and the U-shaped heat exchange tube 2 119 are both located at the position farthest from the axis of the mixing tube 104.
[0030] A positioning unit is provided between the positioning slide 116 and the positioning slide 2 117. The positioning unit is used to adjust the positions of the U-shaped heat exchange tube 118 and the U-shaped heat exchange tube 2 119 in the mixing tube 104. The positioning unit includes six positioning gears 124. Positioning racks 125 are fixedly provided on the positioning slide 116 and the positioning slide 2 117. Six strip support plates 127 are also fixedly provided in a circular array on the mixing tube 104. The positioning gears 124 are rotatably installed on the corresponding strip support plates 127, and the positioning gears 124 and the corresponding positioning racks 125 respectively form a gear rack pair.
[0031] The positioning unit also includes a positioning gear ring 115. Three strip support plates 128 are fixedly arranged in a circular array on the mixing tube 104. The positioning gear ring 115 is rotatably connected to the strip support plate 128. A positioning motor 121 is fixedly mounted on one of the three strip support plates 128. A transmission gear 120 is fixedly mounted on the output shaft of the positioning motor 121. The transmission gear 120 and the positioning gear ring 115 are engaged to form a gear pair. Three sector racks 122 are fixedly arranged in a circular array on the positioning gear ring 115. Driven gears 123 are fixedly mounted on the sides of the positioning gear 124. When the driven gear 123 and the corresponding sector rack 122 are engaged, a gear rack pair is formed.
[0032] Start the positioning motor 121 to drive the transmission gear 120 to rotate, the positioning gear ring 115 rotates, and the three sector racks 122 on the positioning gear ring 115 rotate synchronously. The sector racks 122 first engage with the driven gears 123 corresponding to the U-shaped heat exchange tube 1 18. At this time, the sector racks 122 do not contact the driven gears 123 corresponding to the U-shaped heat exchange tube 2 119. Under the action of the sector racks 122, the driven gears 123 corresponding to the U-shaped heat exchange tube 1 18 rotate, thereby causing the corresponding three positioning gears 124 to rotate synchronously, that is, the positioning racks 125 corresponding to the U-shaped heat exchange tube 1 18 all move closer to the mixing tube 1 04 axis, the three adjusting slides 116 move synchronously toward the direction close to the axis of the delivery pipe 105, and the return spring 126 between the adjusting slide 116 and the mixing tube 104 is compressed, thereby causing the three U-shaped heat exchange tubes 118 to move toward the direction close to the axis of the mixing tube 104, that is, changing the position of the U-shaped heat exchange tube 118 in the mixing tube 104. When the U-shaped heat exchange tube 118 moves to the position closest to the axis of the mixing tube 104, the sector rack 122 disengages from the driven gear 123 corresponding to the U-shaped heat exchange tube 118, and under the action of the return spring 126, the U-shaped heat exchange tube 118 returns to its initial position.
[0033] The adjusting gear ring 115 continues to rotate, and the three sector racks 122 on the adjusting gear ring 115 are respectively engaged with the driven gears 123 corresponding to the U-shaped heat exchange tube 2 119. At this time, the sector racks 122 do not contact the driven gears 123 corresponding to the U-shaped heat exchange tube 1 118. The adjusting gear ring 115 continues to rotate, causing the three U-shaped heat exchange tubes 2 119 to move toward the direction close to the axis of the mixing tube 104.
[0034] By repeating the above steps, the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 can be moved toward the axis of the mixing tube 104, that is, the positions of the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 in the mixing tube 104, thereby changing the swirl direction in the mixing tube 104 and improving the mixing effect of the atomized fuel and gas.
[0035] The mixing tube 104 is provided with a cleaning assembly, which includes six arc-shaped long slides 111 slidably mounted on the mixing tube 104 in a circular array. There is no gap between the arc-shaped long slide 111 and the mixing tube 104. An annular slide 112 is also slidably mounted on the mixing tube 104. The ends of the arc-shaped long slides 111 farthest from the atomizing nozzle 106 are fixedly connected to the annular slide 112. A cleaning screw 113 is rotatably mounted on the mixing tube 104. The cleaning screw 113 and the annular slide 112 form a spiral pair. A cleaning motor 114 is fixedly mounted on the mixing tube 104. The cleaning screw 113 is fixedly connected to the output shaft of the cleaning motor 114. Circular scrapers 129 are slidably mounted on both the U-shaped heat exchange tube 118 and the U-shaped heat exchange tube 2 119. Linkage strips 130 are fixedly provided on the circular scrapers 129, and the linkage strips 130 slide in cooperation with the corresponding arc-shaped long slides 111 respectively.
[0036] In the initial position, the arc-shaped long slide 111 is located at the position farthest from the atomizing nozzle 106. At this time, the annular slide 112 and the circular scraper 129 are also located at the position farthest from the atomizing nozzle 106. The cleaning motor 114 is started to drive the cleaning screw 113 to rotate, that is, the annular slide 112 moves in the direction close to the cleaning motor 114, that is, the six arc-shaped long slides 111 move synchronously in the direction close to the atomizing nozzle 106, and the arc-shaped long slide 111 slides relative to the mixing tube 104. The length of the arc-shaped long slide 111 is twice the length of the mixing tube 104, that is, when the arc-shaped long slide 111 is relative to the mixing tube 104, the length of the arc-shaped long slide 111 is twice the length of the mixing tube 104. When the mixing tube 104 slides, the interior of the mixing tube 104 is always a closed chamber. When the arc-shaped long slide plate 111 moves, under the action of the linkage strip 130, the circular scraper 129 moves synchronously. The circular scraper 129 scrapes off the attachments on the long tube sections of the U-shaped heat exchange tube 1 18 and the U-shaped heat exchange tube 2 119, that is, the long tube sections of the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 are cleaned, thereby ensuring the heat exchange effect of the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119. The cleaned attachments fall into the mixing tube 104, and the interior of the mixing tube 104 is cleaned by injecting cleaning water from the air supply pipe 102.
[0037] When the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 move relative to the mixing tube 104 , the linkage strip 130 slides relative to the corresponding arc-shaped long slide plate 111 .
[0038] The annular diverter chamber 107 and the annular diverter chamber 2 108 are respectively fixedly arranged at the two ends of the mixing tube 104. The annular diverter chamber 107 is located at the end of the mixing tube 104 closest to the atomizing nozzle 106. The annular diverter chamber 107 is symmetrically fixed with an air guide pipe 109, and the annular diverter chamber 2 108 is symmetrically fixed with an air guide pipe 2 110. The short tubes of the U-shaped heat exchange tube 118 and the U-shaped heat exchange tube 2 119 are both slidably fitted relative to the annular diverter chamber 107 and the annular diverter chamber 2 108.
[0039] When the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 move relative to the mixing tube 104 , the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 also slide relative to the annular diversion chamber 1 107 and the annular diversion chamber 2 108 .
[0040] The flue gas with residual heat after combustion enters the annular diversion chamber 107 along the two air guide pipes 109, and is diverted into the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 through the annular diversion chamber 107, and finally enters the annular diversion chamber 2 108 along the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119, and is then discharged from the air guide pipe 2 110. When the flue gas passes through the U-shaped heat exchange tube 1 118 and the U-shaped heat exchange tube 2 119 located inside the mixing tube 104, the mixture in the mixing tube 104 is heated, that is, the atomized fuel is preheated, thereby improving the subsequent combustion effect.
[0041] Working principle: gas enters the feed pipe 101 along the air feed pipe 102, and fuel enters the feed pipe 101 along the liquid feed pipe 103, and then is atomized and sprayed out from the atomizing nozzle 106 under the action of the mixing pipe 104, the delivery pipe 105, and the atomizing nozzle 106. Under the action of the U-shaped heat exchange tube 118 and the U-shaped heat exchange tube 2 119, the fuel after the first atomization in the mixing pipe 104 is preheated, and by changing the positions of the U-shaped heat exchange tube 118 and the U-shaped heat exchange tube 2 119, the swirl direction of the airflow in the mixing pipe 104 is changed, thereby improving the mixing effect and preheating effect.
[0042] The present invention is not limited to the above-mentioned specific embodiments. Various modifications made by technicians in the relevant technical field based on the above-mentioned conception without creative work are all within the scope of protection of the present invention.
Claims
1. A medium atomizing device for ultra-low oxygen combustion, comprising a feed pipe (101), characterized in that: The feed pipe (101) is provided with an air feed pipe (102), a liquid feed pipe (103), a mixing pipe (104), a delivery pipe (105), and an atomizing nozzle (106). The mixing pipe (104) is provided with a heat exchange component and a cleaning component. The heat exchange component includes an annular diversion chamber 2 (108) and an air guide pipe 1 (109). Three U-shaped heat exchange pipes 1 (118) and three U-shaped heat exchange pipes 2 (119) are provided between the annular diversion chamber 2 (108) and the air guide pipe 1 (109). The U-shaped heat exchange pipes 1 (118) and the U-shaped heat exchange pipes 2 (119) are both slidably matched with the mixing pipe (104). A positioning slide 1 (116) is fixedly provided on the U-shaped heat exchange pipe 1 (118). A positioning slide 2 (117) is fixedly provided on the second (119), and a positioning unit is provided between the positioning slide 1 (116) and the positioning slide 2 (117). The positioning unit is used to adjust the positions of the U-shaped heat exchange tube 1 (118) and the U-shaped heat exchange tube 2 (119) in the mixing tube (104). The cleaning component includes six arc-shaped long slides (111) slidably installed on the mixing tube (104) in a circular array. Circular scrapers (129) are slidably installed on the U-shaped heat exchange tube 1 (118) and the U-shaped heat exchange tube 2 (119). Linkage strips (130) are fixedly provided on the circular scrapers (129). The linkage strips (130) are respectively slidably matched with the corresponding arc-shaped long slides (111).
2. The medium atomizing device for ultra-low oxygen combustion according to claim 1, characterized in that: The two ends of the feed pipe (101) are fixedly connected to the air supply pipe (102) and the mixing pipe (104), respectively. The two ends of the delivery pipe (105) are fixedly connected to the mixing pipe (104) and the atomizing nozzle (106), respectively. The axes of the feed pipe (101), the air supply pipe (102), the mixing pipe (104), the delivery pipe (105), and the atomizing nozzle (106) are on the same straight line. The liquid delivery pipe (103) is fixedly connected to the feed pipe (101), and the axis of the liquid delivery pipe (103) is perpendicular to the axis of the feed pipe (101).
3. The medium atomizing device for ultra-low oxygen combustion according to claim 2, characterized in that: The inner diameters of the air supply pipe (102) and the mixing pipe (104) are equal, the inner diameters of the feed pipe (101) and the delivery pipe (105) are equal, the inner diameter of the air supply pipe (102) is larger than the inner diameter of the feed pipe (101), a first venturi tube is formed between the air supply pipe (102), the feed pipe (101), and the mixing pipe (104), and a second venturi tube is formed between the mixing pipe (104), the delivery pipe (105), and the atomizing nozzle (106).
4. The medium atomizing device for ultra-low oxygen combustion according to claim 3, characterized in that: The three U-shaped heat exchange tubes (118) and the three U-shaped heat exchange tubes (119) are arranged in a circular array relative to the axis of the mixing tube (104). The U-shaped heat exchange tube (118) and the U-shaped heat exchange tube (119) are arranged at intervals. The U-shaped heat exchange tube (118) and the U-shaped heat exchange tube (119) are each composed of a long tube and two short tubes. The two short tubes are arranged at both ends of the corresponding long tubes. The long tubes are all arranged inside the mixing tube (104), and the short tubes are all slidably matched with the mixing tube (104).
5. The medium atomizing device for ultra-low oxygen combustion according to claim 4, characterized in that: The first adjusting slide plate (116) and the second adjusting slide plate (117) are both slidably matched with the outer circumferential surface of the mixing tube (104), and the first adjusting slide plate (116) and the second adjusting slide plate (117) are both symmetrically provided with a return spring (126) between the mixing tube (104).
6. The medium atomizing device for ultra-low oxygen combustion according to claim 5, characterized in that: The positioning unit includes six positioning gears (124), and positioning racks (125) are fixedly provided on the positioning slide 1 (116) and the positioning slide 2 (117). Six strip support plates (127) are also fixedly provided in a circumferential array on the mixing tube (104). The positioning gears (124) are rotatably mounted on the corresponding strip support plates (127), and the positioning gears (124) and the corresponding positioning racks (125) respectively form a gear rack pair.
7. The medium atomizing device for ultra-low oxygen combustion according to claim 6, characterized in that: The positioning unit further includes a positioning gear ring (115), three strip-shaped support plates (128) are fixedly arranged in a circumferential array on the mixing tube (104), the positioning gear ring (115) is rotatably connected to the strip-shaped support plates (128), three sector racks (122) are fixedly arranged in a circumferential array on the positioning gear ring (115), and driven gears (123) are fixedly installed on the sides of the positioning gears (124), and when the driven gears (123) and the corresponding sector racks (122) are engaged, they form a gear rack pair.
8. The medium atomizing device for ultra-low oxygen combustion according to claim 7, characterized in that: There is no gap between the arc-shaped long slide (111) and the mixing tube (104), and an annular slide (112) is slidably mounted on the mixing tube (104). The ends of the arc-shaped long slide (111) farthest from the atomizing nozzle (106) are fixedly connected to the annular slide (112). A cleaning screw (113) is rotatably mounted on the mixing tube (104), and the cleaning screw (113) and the annular slide (112) form a spiral pair.
9. The medium atomizing device for ultra-low oxygen combustion according to claim 8, characterized in that: The annular diversion chamber 1 (107) and the annular diversion chamber 2 (108) are respectively fixedly arranged at the two ends of the mixing tube (104), and the annular diversion chamber 1 (107) is located at the end of the mixing tube (104) closest to the atomizing nozzle (106). The annular diversion chamber 1 (107) is symmetrically fixedly provided with an air guide pipe 1 (109), and the annular diversion chamber 2 (108) is symmetrically fixedly provided with an air guide pipe 2 (110).