A blockable combustor with adjustable combustion power

Abstract

The present application relates to a kind of block adjustable combustion power pure oxygen combustor, including fire brick embedded on combustor shell, fire brick inside center position is provided with core disc, the outer wall of core disc is fixedly connected with the inner wall of fire brick between multiple regional fire damper, and regional fire damper is provided with distance adjusting assembly, distance adjusting assembly is provided with multiple low-power burners, core disc bottom is provided with driving component, and driving component is adjusted by driving distance adjusting assembly to the spacing of each low-power burner.This kind of block adjustable combustion power pure oxygen combustor, using block combustion mode, solve the situation that combustor is in high temperature state for long time, effectively increase the life of combustor and heating furnace, reduce the degree of high-temperature oxygen-rich ablation damage of burner, and the spacing between each low-power burner in block can be adjusted according to the combustion temperature of fire brick to enlarge and reduce the spacing between each low-power burner.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of blockable adjustable combustion power pure oxygen combustor, for new type combustor equipment of petrochemical industry, metallurgy, building material etc., especially a kind of blockable adjustable combustion power pure oxygen combustor. BACKGROUND

[0002] At present, traditional combustor is mostly air-assisted combustor. However, oxygen in air only accounts for 21%, and nitrogen accounts for nearly 79% in air. Only oxygen and fuel in air have oxidation reaction during combustion, and nitrogen does not participate in combustion. Moreover, nitrogen and oxygen produce NO x at high temperature, which has negative impact on atmospheric environment, and a large amount of heat is taken away during emission. Compared with traditional combustor, the required theoretical oxidation amount of pure oxygen combustor is greatly reduced, so the exhaust gas volume is greatly reduced, and the heat taken away is less, which achieves the purpose of energy saving. Moreover, almost no NO x is produced in combustion product, and more than 95% of CO2 is produced, which can be stored and reused to achieve the purpose of emission reduction.

[0003] The present application is pure oxygen combustor, and the combustion temperature is higher than that of traditional combustor, and the exhaust smoke volume is far less than that of traditional combustor. The heat exchange mode of pure oxygen combustion is mainly thermal radiation, and the proportion of thermal convection is small. In this case, the pipe wall is in local high temperature for a long time, the mechanical strength of the material is reduced, the metal appears irreversible deformation, the pipe wall is thinned, and the pipe wall is broken or perforated. The oxygen content of pure oxygen combustion is high, the combustion temperature is high, and the burner is easy to be damaged by rich oxygen ablation for a long time. In view of this, a kind of blockable adjustable combustion power pure oxygen combustor is provided. SUMMARY

[0004] The present application aims to provide a kind of blockable adjustable combustion power pure oxygen combustor to solve the problems in the above background. To achieve the above purpose, the present application provides the following technical scheme: a kind of blockable adjustable combustion power pure oxygen combustor, including fire-shaped brick embedded on combustor shell, core disc is arranged at the center position in the combustor shell, the outer wall of the core disc is fixedly connected with the inner wall of the combustor shell through a plurality of area fireproof plates, and distance adjusting assembly is arranged on the area fireproof plate, a plurality of low-power burners are arranged on the distance adjusting assembly, drive component is arranged at the bottom of the core disc, and the drive component adjusts the distance of each low-power burner by driving distance adjusting assembly.

[0005] Preferably, a plurality of said area fireproof plates are arranged at equal intervals along the circumferential direction of the core disc, a low-power burner is fixedly connected through the center of the core disc, and each said low-power burner is arranged parallel to each other and parallel to the central axis of the combustor shell.

[0006] Preferably, the low-power burner comprises a low-power burner oxygen pipeline and a low-power burner gas pipeline arranged concentrically, the low-power burner oxygen pipeline is located outside the low-power burner gas pipeline and a gap is left between the two, the end of the low-power burner oxygen pipeline pointing to the inside of the furnace is provided with a plurality of oxygen injection holes, and the end of the low-power burner gas pipeline pointing to the inside of the furnace is provided with a plurality of gas injection holes.

[0007] Preferably, the end of the low-power burner oxygen pipeline away from the oxygen injection holes is connected with an oxygen jacket pipe, the end of the low-power burner gas pipeline away from the gas injection holes is connected with a gas jacket pipe, and the oxygen jacket pipe and the gas jacket pipe are both connected with a micro-regulating valve and a pressure gauge, and the pressure gauge is arranged at the end of the corresponding jacket pipe close to the low-power burner.

[0008] Preferably, each of the oxygen jacket pipes is connected with an oxygen main pipeline, and the oxygen main pipeline is sequentially connected with an emergency shut-off valve, a filter, a pressure regulating valve, a micro-regulating valve, a gas flow meter and a pressure transmitter along the direction of gas flow.

[0009] Preferably, each of the gas jacket pipes is connected with a gas main pipeline, and the gas main pipeline is sequentially connected with an emergency shut-off valve, a filter, a pressure regulating valve, a micro-regulating valve, a gas flow meter and a pressure transmitter along the direction of gas flow.

[0010] Preferably, the distance adjusting assembly comprises a sliding groove arranged on the area fireproof plate, the sliding groove is arranged perpendicular to the central axis of the core disc, a plurality of sliding blocks are slidably connected in the sliding groove, a fixed block is fixed to the end of the area fireproof plate close to the core disc, and a low-power burner is fixed to the fixed block and each of the sliding blocks.

[0011] Preferably, a scissor link set is hinged to the fixed block and each of the sliding blocks, and the two opposite ends of adjacent scissor link sets are pivotally connected.

[0012] Preferably, the two ends of the scissor link set on the fixed block close to the core disc are hinged to a screw rod through a connecting rod, the screw rod penetrates and is threadedly connected at the center of gear two, gear two is coaxially and fixedly connected with the pipe shaft, the end of the screw rod away from the connecting rod is located in the pipe shaft, and the end of the pipe shaft away from gear two is pivotally connected in the groove arranged on the side wall of the core disc.

[0013] Preferably, the driving component comprises a micro motor fixed to the bottom surface of the core disc, the output shaft of the micro motor is in transmission connection with gear one, a ring frame is sleeved and pivotally connected to the outer peripheral wall of the core disc, the ring frame is coaxially fixed to the inner wall of the gear ring, the upper side teeth of the gear ring are in meshing connection with each of the gear two, and the lower side teeth of the gear ring are in meshing connection with gear one.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] The combustion mode of the pure oxygen burner is pure oxygen combustion, smoke is less generated, and no nitrogen oxide is generated after combustion, and more than 95% of CO2 is generated, which can be stored and reused.

[0016] The combustion power of the burner can be adjusted, and according to the required combustion power of the burner, the valve assembly is quickly executed through the automatic control and adjustment system, the combustion and extinguishing of the burner are effectively and quickly controlled, and the required combustion power of the burner is reached.

[0017] The block combustion mode is used, the block combustion effectively solves the situation that the burner is in a high temperature state for a long time, multiple independent burners are alternately combusted, the hot flow is prevented from continuously scouring the same point of the furnace tube, the service life of the burner and the heating furnace is effectively increased, the high-temperature oxygen-rich ablation damage degree of the burner is reduced, and the spacing between the small-power burners in the block can be adjusted according to the combustion temperature of the fire brick.

[0018] The intelligent valve control device is used, the gas pipeline and the oxygen pipeline of the burner are provided with automatic adjustment electrical control devices and linear execution mechanisms, the automatic control valve opening degree of the online operation of each pipeline is realized through the automatic control and adjustment system, the control system simultaneously implements the proportional adjustment linkage control of the gas pressure and the oxygen of the burner, and a control management system for automatic operation of the burner group is formed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a sectional structure schematic view of the block adjustable combustion power valve pure oxygen burner.

[0020] Figure 2 It is a burner layout schematic view of the block adjustable combustion power valve pure oxygen burner.

[0021] Figure 3 It is a core disc sectional structure schematic view of the block adjustable combustion power valve pure oxygen burner.

[0022] Figure 4 It is a burner structure schematic view of the block adjustable combustion power valve pure oxygen burner.

[0023] Figure 5 It is a burner port structure schematic view of the block adjustable combustion power valve pure oxygen burner.

[0024] Figure 6 It is a pipeline valve control schematic view of the block adjustable combustion power valve pure oxygen burner.

[0025] In the figure: 1, burner shell; 2, fire-shaped brick; 3, small-power burner; 4, area fireproof plate; 5, small-power burner oxygen pipeline; 6, oxygen injection hole; 7, gas injection hole; 8, small-power burner gas pipeline; 9, oxygen bag pipeline; 10, emergency cut-off valve; 11, filter; 12, pressure regulating valve; 13, trace regulating valve; 14, gas flow meter; 15, pressure transmitter; 16, pressure gauge; 17, gas bag pipeline; 18, distance adjusting assembly; 19, core disc; 20, micro motor; 21, gear one; 22, gear ring; 23, ring frame; 24, groove; 25, pipe shaft; 26, gear two; 27, screw rod; 28, connecting rod; 29, fixed block; 30, scissor lever group; 31, sliding groove; 32, sliding block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] Please refer to Figures 1 to 6 The present application provides a technical solution: a block-based adjustable combustion power pure oxygen burner, which comprises a fire-shaped brick 2 embedded in a burner shell 1, a core disc 19 is arranged at the inner center position of the fire-shaped brick 2, the outer peripheral wall of the core disc 19 is fixedly connected with the inner wall of the fire-shaped brick 2 through a plurality of area fireproof plates 4, and a distance adjusting assembly 18 is arranged on the area fireproof plate 4, a plurality of small-power burners 3 are arranged on the distance adjusting assembly 18, a driving component is arranged at the bottom of the core disc 19, and the driving component adjusts the distance of each small-power burner 3 by driving the distance adjusting assembly 18, and the material of the fire-shaped brick is high-alumina or corundum refractory material. First, the fire-shaped brick provides a heat source for the flame root, accelerates the combustion of fuel gas and oxygen, and is beneficial to form stable combustion. Second, the fire-shaped brick has a relatively long length, can constrain oxygen and fuel gas, prevent oxygen and fuel gas from rapidly overflowing, and is beneficial to burn out oxygen and fuel gas.

[0028] In the embodiment, the plurality of area fireproof plates 4 are arranged at equal intervals along the circumferential direction of the core disc 19, the center of the core disc 19 penetrates and is fixedly connected with a low-power burner 3, each low-power burner 3 is arranged in parallel with each other and in parallel with the central axis of the fire-shaped brick 2, the shape of the area fireproof plate 4 is not fixed, and is determined according to the combustion requirement, the area fireproof plate 4 divides the burner into a plurality of combustion areas to realize block combustion, the low-power burners 3 are uniformly arranged in the fire-shaped brick 2 in a specific arrangement mode, there is a minimum installation distance between single low-power burners 3, the flame is dispersed, the combustion temperature is kept low, and interference between the burners is prevented, and the burner is not specially provided with a pilot light, and each low-power burner 3 can replace the pilot light.

[0029] In the embodiment, the low-power burner 3 comprises a low-power burner oxygen pipeline 5 and a low-power burner gas pipeline 8 arranged concentrically, the low-power burner oxygen pipeline 5 is located outside the low-power burner gas pipeline 8, and a gap is left between the two, the end of the low-power burner oxygen pipeline 5 pointing to the inside of the hearth is provided with a plurality of oxygen injection holes 6, the end of the low-power burner gas pipeline 8 pointing to the inside of the hearth is provided with a plurality of gas injection holes 7, the oxygen injection holes 6 and the gas injection holes 7 are both in a Venturi structure, have the effect of accelerating gas flow rate and lengthening flame, the end of the low-power burner oxygen pipeline 5 away from the oxygen injection holes 6 is connected with an oxygen jacket pipe 9, the end of the low-power burner gas pipeline 8 away from the gas injection holes 7 is connected with a gas jacket pipe 17, the oxygen jacket pipe 9 and the gas jacket pipe 17 are both connected with a micro-adjusting valve 13 and a pressure gauge 16, and the pressure gauge 16 is arranged at the end of the corresponding jacket pipe close to the low-power burner 3, the gas and oxygen of the low-power burner 3 are mixed outside and fully mixed, and independent combustion is performed, assuming that the power of a single burner is 100KW, and 10 burners are needed to be turned on to make the burner reach 1MW power, the combustion power of the burner can be adjusted, a plurality of independent burners are alternately combusted in turn, heat flow is prevented from continuously washing the furnace tube at the same point, and the service life of the burner and the heating furnace is effectively increased.

[0030] In the embodiment, each oxygen jacket pipe 9 is connected with an oxygen main pipe, and the oxygen main pipe is sequentially connected with an emergency shut-off valve 10, a filter 11, a pressure regulating valve 12, a micro-adjusting valve 13, a gas flow meter 14 and a pressure transmitter 15 in the gas flow direction.

[0031] In the embodiment, each gas jacket pipe 17 is connected with a gas main pipe, and the gas main pipe is sequentially connected with an emergency shut-off valve 10, a filter 11, a pressure regulating valve 12, a micro-adjusting valve 13, a gas flow meter 14 and a pressure transmitter 15 in the gas flow direction.

[0032] The gas pipeline and the oxygen pipeline of the burner are provided with automatic adjusting electric control devices and linear actuating mechanisms, and the valve opening degrees of the pipelines are automatically controlled on line through an adjusting system.

[0033] In the embodiment, the distance adjusting assembly 18 comprises a sliding groove 31 formed on the area fireproof plate 4, the sliding groove 31 is arranged perpendicularly to the central axis of the core disc 19, a plurality of sliding blocks 32 are slidingly connected in the sliding groove 31, the area fireproof plate 4 is fixed with a fixed block 29 at one end close to the core disc 19, a small-power burner 3 is fixed on each of the fixed block 29 and the sliding blocks 32, a scissor lever set 30 is hinged on each of the fixed block 29 and the sliding blocks 32, and the two opposite ends of adjacent scissor lever sets 30 are pivotally connected.

[0034] In the embodiment, the scissor lever sets 30 on the fixed block 29 are hinged with the screw rod 27 through the connecting rods 28 close to the two ends of the core disc 19, the screw rod 27 penetrates and is threadedly connected at the center of the gear two 26, the gear two 26 is coaxially and fixedly connected with the pipe shaft 25, one end of the screw rod 27 away from the connecting rod 28 is located in the pipe shaft 25, and the other end of the pipe shaft 25 away from the gear two 26 is pivotally connected in the groove 24 on the side wall of the core disc 19.

[0035] In the embodiment, the driving component comprises a micro motor 20 fixed on the bottom surface of the core disc 19, the output shaft of the micro motor 20 is drivingly connected with the gear one 21, a ring frame 23 is sleeved and pivotally connected on the outer peripheral wall of the core disc 19, the ring frame 23 is coaxially and fixedly connected on the inner wall of the gear ring 22, the upper side teeth of the gear ring 22 are meshingly connected with each of the gear two 26, and the lower side teeth of the gear ring 22 are meshingly connected with the gear one 21.

[0036] The working principle and advantages of the present application are as follows:

[0037] As Figure 6As shown, the gas main and oxygen main supply gas and oxygen to each small-power burner 3 via oxygen coil 9 and gas coil 17, respectively, enabling combustion in the burners. Emergency shut-off valve 10, filter 11, pressure regulating valve 12, micro-regulating valve 13, gas flow meter 14, and pressure transmitter 15 are installed on the gas main and oxygen main. The intake of oxygen and gas is controlled based on the chemical equivalence of oxygen and gas combustion, and the pressure of the two gases is balanced. Each independent burner's small-power burner oxygen pipeline 5 and small-power burner gas pipeline 8 are equipped with a micro-regulating valve 13 and a pressure gauge 16. This system is convenient, simple, and effectively controls the combustion and extinguishing of the burners quickly. Because the combustion method is pure oxygen combustion, the combustion speed is fast, the fuel is completely burned, and almost no NOx is produced.

[0038] like Figure 2 As shown, the interior of the fire-shaped brick 2 is divided into multiple combustion zones by the core disk 19 and the fire baffles 4 of each zone, realizing block combustion. Each combustion zone is equipped with multiple low-power burners 3. Each combustion zone can burn independently, alternately, symmetrically, or all at once, depending on the combustion power. Block combustion effectively solves the problem of the burner being in a high-temperature state for a long time and reduces the degree of high-temperature oxygen-rich ablation damage to the burners.

[0039] When the detection device detects that the combustion temperature of the fire-shaped brick 2 is too high, it controls the micro motor 20 to work through the control system, such as... Figure 3 As shown, the micro motor 20 drives the gear ring 22 to rotate on the core disk 19 via gear 21, which in turn drives each gear 26 to rotate. This causes the gear 26 to drive the corresponding screw 27 to move into the corresponding groove 24 via threaded transmission. While the screw 27 moves into the groove 24, it applies a pulling force to the two ends of the scissor bar assembly 30 on the fixed block 29 via two connecting rods 28. This pulling force increases the lateral distance of the scissor bar assembly 30, which in turn causes the other scissor bar assemblies 30 to drive the corresponding sliders 29 to move away from the core disk 19 within the slide groove 31. The distance between each slider 32 also increases, which in turn increases the distance between the low-power burners 3 on each area fireproof plate 4, thereby reducing the combustion temperature of the fire-shaped brick 2.

[0040] When the detector detects that the combustion temperature of the fire-shaped brick 2 is too low, the micro motor 20 is controlled to work by the control system, so that the micro motor 20 drives the gear ring 22 to rotate on the core disc 19 through the gear 21, so that the gear ring 22 drives each gear 26 to rotate reversely, and then the gear 26 drives the corresponding screw rod 27 to move outwardly in the corresponding groove 24 through threaded transmission, and the screw rod 27 applies a pushing force to the two ends of the scissor rod group 30 on the fixed block 29 through the two connecting rods 28 while moving outwardly in the groove 24, the pulling force makes the distance of the scissor rod group 30 in the transverse direction become shorter, and then the other scissor rod groups 30 drive the corresponding sliding blocks 29 to move close to the core disc 19 in the sliding groove 31, and the distance between the sliding blocks 32 also becomes shorter, and then the distance between the small-power burners 3 on each area fireproof plate 4 also becomes shorter, so that the combustion temperature of the fire-shaped brick 2 is increased, and the distance between the small-power burners 3 is adaptively adjusted according to the combustion temperature of the fire-shaped brick 2.

[0041] The oxygen and fuel gas in each small-power burner 3 are fully mixed and independently burned, and a multi-point dispersed flame is formed, so that the combustion flame temperature of the burner is reduced, and the valve assembly is quickly executed through the automatic control and adjustment system according to the required combustion power of the burner, so that the burning and extinguishing of the burner are effectively and quickly controlled, and the required combustion power of the burner is achieved.

[0042] In the use process of the present application, the block combustion is used, which effectively solves the situation that the burner is in a high-temperature state for a long time, and the multiple independent burners are alternately burned, so that the hot flow is prevented from continuously eroding the same point of the furnace tube, the life of the burner and the heating furnace is effectively increased, and the high-temperature oxygen-rich ablation damage degree of the burner is reduced.

[0043] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0044] In the description of the application, unless otherwise specified and limited, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0045] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

Claims

1. A blockable combustor with adjustable combustion power in pure oxygen, comprising fire-shaped bricks (2) embedded in a combustor shell (1), characterized in that: The fire-shaped brick (2) is internally provided with a core disc (19) at a central position, the outer peripheral wall of the core disc (19) is fixedly connected with the inner wall of the fire-shaped brick (2) through a plurality of regional fireproof plates (4), the regional fireproof plates (4) are provided with distance adjusting assemblies (18), the distance adjusting assemblies (18) are provided with a plurality of low-power burners (3), the core disc (19) is provided with a driving component at the bottom, and the driving component drives the distance adjusting assemblies (18) to adjust the distance of the low-power burners (3).

2. A zoned, adjustable combustion power, pure oxygen combustor as set forth in Claim 1, characterized by: A plurality of the regional fireproof plates (4) are arranged at equal intervals along the circumferential direction of the core disc (19), the center of the core disc (19) is penetrated and fixedly connected with the low-power burners (3), and each of the low-power burners (3) is arranged in parallel with each other and with the central axis of the fire-shaped brick (2).

3. A zoned, adjustable combustion power, pure oxygen combustor as set forth in Claim 2, characterized by: The low-power burner (3) comprises a low-power burner oxygen pipeline (5) and a low-power burner gas pipeline (8) arranged concentrically, the low-power burner oxygen pipeline (5) is located outside the low-power burner gas pipeline (8), and a gap is formed between the two, the low-power burner oxygen pipeline (5) is provided with a plurality of oxygen injection holes (6) at the port pointing to the inside of the hearth, and the low-power burner gas pipeline (8) is provided with a plurality of gas injection holes (7) at the port pointing to the inside of the hearth.

4. A zoned, adjustable combustion power, pure oxygen combustor as set forth in Claim 3, characterized by: The low-power burner oxygen pipeline (5) is connected with an oxygen jacket pipe (9) at one end away from the oxygen injection hole (6), the low-power burner gas pipeline (8) is connected with a gas jacket pipe (17) at one end away from the gas injection hole (7), and the oxygen jacket pipe (9) and the gas jacket pipe (17) are both connected with a trace adjusting valve (13) and a pressure gauge (16), and the pressure gauge (16) is arranged at the end of the corresponding jacket pipe close to the low-power burner (3).

5. A zoned, adjustable combustion power, pure oxygen combustor as set forth in Claim 4, characterized by: Each of the oxygen jacket pipes (9) is connected with an oxygen main pipe, and the oxygen main pipe is sequentially connected with an emergency shut-off valve (10), a filter (11), a pressure regulating valve (12), a trace adjusting valve (13), a gas flow meter (14) and a pressure transmitter (15) in the direction of gas flow.

6. A zoned, adjustable combustion power, pure oxygen combustor as set forth in Claim 4, characterized by: Each of the gas jacket pipes (17) is connected with a gas main pipe, and the gas main pipe is sequentially connected with an emergency shut-off valve (10), a filter (11), a pressure regulating valve (12), a trace adjusting valve (13), a gas flow meter (14) and a pressure transmitter (15) in the direction of gas flow.

7. A zoned, adjustable combustion power, pure oxygen combustor as set forth in Claim 1, characterized by: The distance adjusting assembly (18) comprises a sliding groove (31) formed in the regional fireproof plate (4), and the sliding groove (31) is arranged in the direction perpendicular to the central axis of the core disc (19), a plurality of sliding blocks (32) are slidably connected in the sliding groove (31), and a fixed block (29) is fixed to one end of the regional fireproof plate (4) close to the core disc (19), the fixed block (29) and each of the sliding blocks (32) are both fixed with a low-power burner (3).

8. A zoned, adjustable combustion power, pure oxygen combustor as set forth in Claim 7, characterized by: The fixed block (29) and each of the sliding blocks (32) are both hinged with a scissor lever set (30), and the two ends of the adjacent scissor lever sets (30) are pivotally connected.

9. A zoned, adjustable-combustion-power, pure-oxygen combustor according to claim 8, characterized in that: The scissor lever group (30) on the fixed block (29) is hinged to the screw rod (27) through the connecting rod (28) near both ends of the core disc (19), the screw rod (27) is threaded at the center of the gear two (26) and is coaxially fixedly connected with the pipe shaft (25), one end of the screw rod (27) away from the connecting rod (28) is located in the pipe shaft (25), and the pipe shaft (25) is pivotally connected at an end away from the gear two (26) in the groove (24) on the side wall of the core disc (19).

10. A zoned, adjustable-combustion-power, pure-oxygen combustor according to claim 9, characterized in that: The driving part comprises a micro motor (20) fixed on the bottom surface of the core disc (19), and the output shaft of the micro motor (20) is drivingly connected with the gear one (21); the outer peripheral wall of the core disc (19) is sleeved and pivotally connected with a ring frame (23), and the ring frame (23) is coaxially fixed on the inner wall of a gear ring (22); the upper side teeth of the gear ring (22) are meshingly connected with each gear two (26), and the lower side teeth of the gear ring (22) are meshingly connected with the gear one (21).

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