Rotational flow combustion secondary combustion-supporting boiler

Abstract

The invention discloses a rotational flow combustion secondary combustion-supporting boiler, and relates to the technical field of boiler heaters used for heat supply, the rotational flow combustion secondary combustion-supporting boiler comprises a boiler body used for heat supply, the interior of the boiler body is divided into a storage cavity used for storing water or air and a combustion cavity used for heating through a heat conduction plate, the boiler body is provided with a circulating component used for circulating water or air in the storage cavity in the heating process. When the rotational flow combustion secondary combustion-supporting boiler is used for conducting continuous flowing heating treatment on water or air to achieve the heat supply effect, the rotational flow combustion assembly, the secondary combustion-supporting control assembly, the rotational flow assembly, the recognition assembly and other components are matched with one another, and according to the type of conveyed fuel, the secondary combustion-supporting control assembly can conduct secondary combustion-supporting treatment on the water or the air. The rotation intensity of secondary air and the rotational flow intensity of airflow are automatically and adaptively controlled and adjusted, sufficient combustion of fuel is guaranteed, the combustion speed and efficiency are improved, and meanwhile emission of pollutants such as carbon monoxide and hydrocarbon is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of boiler heaters for heating, in particular to a swirl combustion secondary combustion supporting boiler. Background Art

[0002] The swirl combustion secondary combustion boiler releases a large amount of heat through combustion, and then transfers it to the heating surface in the boiler through heat conduction, convection and radiation. The heating surface is usually composed of pipes. The water or other heat transfer medium in the pipe absorbs heat and the temperature rises, thereby generating steam or hot water. These steam or hot water are transported to the place where heat is needed through pipes to achieve the purpose of heating.

[0003] When the swirl combustion secondary combustion boiler is in use, the fuel and air are fully mixed through the swirl combustion method, and the combustion is more complete. At the same time, the secondary combustion can supplement the oxygen required for combustion, further improve the combustion efficiency, reduce fuel waste, and improve the efficiency of the boiler heater during heating. When the swirl combustion secondary combustion boiler is in use, different fuels need to be switched according to different usage times. For example, in the initial stage of boiler startup, ignition oil or natural gas and other flammable fuels are needed to quickly ignite the boiler. After the boiler runs stably, it is switched to conventional coal fuel. When running at low load, in order to ensure the stability and economy of combustion, it may be switched to a more easily combustible fuel, such as high-quality bituminous coal or natural gas. During the operation of the swirl combustion secondary combustion boiler, the swirl intensity of the swirl burner is fixed, and the mixing method and amount of secondary air are relatively fixed, which is difficult to adjust in time according to changes in coal quality. When the coal quality changes and the oxygen demand increases, oxygen-deficient combustion will occur, resulting in incomplete combustion, affecting the heating treatment efficiency of water or air when the swirl combustion secondary combustion boiler is in use. For this reason, we propose a swirl combustion secondary combustion boiler. Summary of the invention

[0004] The object of the present invention is to provide a swirl combustion secondary combustion boiler to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a swirl combustion secondary combustion boiler, comprising a boiler body for heating, the interior of the boiler body is divided into a storage chamber for storing water or air and a combustion chamber for heating by a heat conducting plate, the boiler body is provided with a circulation component for circulating water or air in the storage chamber during the heating process, and further comprising: The swirl combustion component is used to mix and transport external air and fuel toward the interior of the combustion chamber; A secondary combustion control component is arranged inside the swirl combustion component and is used for secondary air supply and combustion during the fuel mixing and transportation process; and a swirl assembly, which is arranged inside the swirl combustion assembly and is used to generate a swirl during the fuel mixing and conveying process; The swirl combustion component includes a volute swirl cylinder and a central air duct centrally installed on the volute swirl cylinder, and a swirl chamber is formed between the inner side of the volute swirl cylinder and the inner position of the central air duct. A secondary air duct for secondary air supply is installed on the volute swirl cylinder and is connected to the swirl chamber. The secondary combustion control component is arranged inside the secondary air duct. A connecting cylinder for assisting the connection with the interior of the combustion chamber is arranged between the volute swirl cylinder and the boiler body. The swirl component is arranged inside the connecting cylinder, and an identification component for identifying the state of mixed fuel is arranged on the central air duct.

[0006] Preferably, the secondary combustion control component includes an outlet pipe fixed inside the vortex chamber, the outlet pipe and the secondary air duct are connected via a flexible tube, a locking rope is sleeved on the outer side of the flexible tube, an installation frame is fixed to the inside of the vortex chamber via a mounting rod, a pulling component for pulling the locking rope is provided on the installation frame, and a first linkage component for auxiliary linkage is provided between the identification component and the pulling component.

[0007] Preferably, the pulling assembly includes two groups of slides symmetrically arranged inside the mounting frame, the two ends of the locking rope are arranged in a crossed state and are respectively fixed to the two groups of slides, a threaded sleeve is fixed on the slide, a double-headed screw is rotatably connected inside the mounting frame, and the threads at both ends of the double-headed screw are arranged in opposite directions, the two groups of threaded sleeves are respectively meshed with the two ends of the double-headed screw, two groups of guide rods are slidably connected to the slide, the two groups of guide rods are symmetrically arranged on both sides of the double-headed screw, and the guide rods are fixed inside the mounting frame.

[0008] Preferably, the identification component includes a circular frame arranged inside the volute-type cyclone cylinder, the circular frame is located on one side of the discharge end of the central air duct and is connected and fixed by multiple groups of L-shaped frames, an identification circular plate is arranged inside the central air duct, the outer diameter of the identification circular plate is smaller than the inner diameter of the central air duct, and an elastic component for assisting elastic connection is arranged between the identification circular plate and the circular frame.

[0009] Preferably, the elastic component includes multiple groups of sleeves fixed to one side of the identification circular plate, and the multiple groups of sleeves are arranged in a circular array. A sliding rod is slidably connected to the sleeve, one end of the sliding rod is fixed to the circular frame, and a spring is sleeved on the outer side of the sleeve, and both ends of the spring are respectively set to resist the circular frame and the identification circular plate.

[0010] Preferably, the first linkage component includes a linkage rod slidably connected to the circular frame, one end of the linkage rod is fixed to the identification circular plate, a mounting frame is fixed to the linkage rod, a rack is connected to the mounting frame through multiple groups of fixing rods, a mounting shaft is rotatably connected to the mounting frame, one end of the mounting shaft is fixed to one end of a double-headed screw rod, and a gear is fixed to the other end of the mounting shaft, and the gear and rack are meshed with each other.

[0011] Preferably, the swirl assembly includes a support frame fixed to the inside of the connecting cylinder, the support frame is rotatably connected to a drive shaft, a mounting disk is fixed to the drive shaft, a drive motor for driving the drive shaft is installed on the support frame, a plurality of guide vanes are connected to the outer side of the mounting disk through a sliding assembly, the guide vanes are arranged in a circular array around the mounting disk and are inclined, an adjustment assembly for adjusting the swirl intensity is arranged on the mounting disk, and a second linkage assembly for auxiliary linkage is arranged between the linkage rod and the adjustment assembly.

[0012] Preferably, the sliding assembly includes a sliding groove opened on the outer side of the mounting plate, a sliding seat is slidably connected to the sliding groove, and the guide vane is fixed to the end of the sliding seat.

[0013] Preferably, the adjustment component includes a spline shaft centrally fixed at the front end of the mounting plate, the spline shaft is slidably connected with a push plate through a spline hole, a plurality of through grooves are provided on the mounting plate, and each group of through grooves is respectively connected to each group of slide grooves, a connecting rod is provided on the through grooves, and both ends of the connecting rod are rotatably connected to the sliding seat and the push plate through a pin shaft.

[0014] Preferably, the second linkage assembly includes a linkage disk arranged on one side of the push plate, the linkage disk and the push plate are connected and fixed by multiple groups of round rods, one side of the linkage disk is rotatably connected to a rotating disk through a circular groove, and one end of the linkage rod is centrally fixed on the rotating disk.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the present invention uses a swirl combustion secondary combustion boiler to perform continuous fluidity heating treatment on water or air to achieve a heating effect, through the mutual cooperation of components such as a swirl combustion component, a secondary combustion control component, a swirl component and an identification component, the secondary wind rotation intensity and the swirl intensity of the airflow can be autonomously and adaptively controlled to ensure sufficient combustion of the fuel, improve the combustion speed and efficiency, and reduce emissions of pollutants such as carbon monoxide and hydrocarbons. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention; Figure 2It is a schematic diagram of the internal structure of the boiler of the present invention; Figure 3 It is a schematic diagram of the structure of the swirl combustion assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the identification component and the elastic component of the present invention; Figure 5 It is a schematic diagram of the structure of the secondary combustion-supporting control component and the first linkage component of the present invention; Figure 6 It is a schematic diagram of the structure of the pulling assembly of the present invention; Figure 7 It is a schematic diagram of the transmission process of the pulling assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the swirl component and the first linkage component of the present invention; Fig. 9 It is a schematic diagram of the structure of the sliding assembly, the adjusting assembly and the second linkage assembly of the present invention; Fig.10 It is a transmission schematic diagram of the adjustment component of the present invention during the adjustment process; Fig.11 This is a schematic diagram of the state of the identification component of the present invention when identifying gaseous coal; Fig.12 It is a schematic diagram of the state of the identification component of the present invention when identifying particulate coal.

[0017] In the figure: 101- boiler body; 102- storage chamber; 103- combustion chamber; 201- volute type swirl cylinder; 202- central air duct; 203- secondary air duct; 204- connecting tube; 301- outlet pipe; 302- flexible tube; 303- locking rope; 4- mounting frame; 5- mounting rod; 601- slide plate; 602- threaded sleeve; 603- double-headed screw rod; 604- guide rod; 701- round frame; 702- L-shaped frame; 703- identification round plate; 801- sleeve; 802- slide rod; 80 3-spring; 901-linkage rod; 902-mounting frame; 903-fixing rod; 904-rack; 905-mounting shaft; 906-gear; 1001-support frame; 1002-drive shaft; 1003-mounting plate; 1004-drive motor; 1005-guide vane; 1101-slide groove; 1102-sliding seat; 1201-spline shaft; 1202-push plate; 1203-through groove; 1204-connecting rod; 1301-linkage plate; 1302-round rod; 1303-rotating plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1 See also Figure 1-Figure 12 The swirl combustion secondary combustion boiler shown in the figure includes a boiler body 101 for heating. The interior of the boiler body 101 is divided into a storage chamber 102 for storing water or air and a combustion chamber 103 for heating by a heat conducting plate. The boiler body 101 is provided with a circulation component for circulating water or air in the storage chamber 102 during the heating process. It should be noted that: a burner for assisting the intake of air and the combustion of coal is disposed inside the combustion chamber 103. The burner and the circulation component are common operating components in the technical field of combustion-supporting boilers, and their working principle and operation method are not further described here. Also includes: The swirl combustion assembly is used to mix and transport external air and fuel toward the combustion chamber 103; A secondary combustion control component is arranged inside the swirl combustion component and is used for secondary air supply and combustion during the fuel mixing and transportation process; and a swirl assembly, which is arranged inside the swirl combustion assembly and is used to generate a swirl during the fuel mixing and conveying process; The swirl combustion assembly includes a volute swirl cylinder 201 and a central air duct 202 centrally mounted on the volute swirl cylinder 201, and a swirl cavity is formed between the inner side of the volute swirl cylinder 201 and the inner position of the central air duct 202, a secondary air duct 203 for secondary air supply connected to the swirl cavity is mounted on the volute swirl cylinder 201, a secondary combustion-supporting control assembly is arranged inside the secondary air duct 203, a connecting cylinder 204 for assisting in connecting to the inside of the combustion chamber 103 is arranged between the volute swirl cylinder 201 and the boiler body 101, a swirl assembly is arranged inside the connecting cylinder 204, and an identification assembly for identifying the state of the mixed fuel is arranged on the central air duct 202; It should be noted here that when a swirl combustion secondary combustion boiler is used to perform continuous fluid heating treatment on water or air to achieve a heating effect, the swirl combustion component, the secondary combustion control component, the swirl component and the identification component cooperate with each other. The secondary wind rotation intensity and the swirl intensity of the airflow can be autonomously and adaptively controlled according to the type of fuel being transported, thereby ensuring sufficient combustion of the fuel, improving the combustion speed and efficiency, and reducing emissions of pollutants such as carbon monoxide and hydrocarbons.

[0020] Preferably, the secondary combustion-supporting control component includes an air outlet pipe 301 fixed inside the swirl chamber, the air outlet pipe 301 is connected to the secondary air duct 203 through a flexible tube 302, a locking rope 303 is sleeved on the outer side of the flexible tube 302, the inside of the swirl chamber is connected and fixed with a mounting frame 4 through a mounting rod 5, a pulling component for pulling the locking rope 303 is provided on the mounting frame 4, and a first linkage component for auxiliary linkage is provided between the identification component and the pulling component; It should be noted here that: when a swirl combustion secondary combustion-supporting boiler is used to heat water or air with continuous fluidity, the fuel and part of the air are driven to be transported through the central air duct 202 and the connecting tube 204 toward the inside of the combustion chamber 103. During the transportation process, the external air is transported through the flexible tube 302 and the air outlet pipe 301 toward the inside of the volute-type swirl cylinder 201 through the secondary air duct 203. During the transportation process, the transported air forms a rotational motion inside the swirl chamber and is spirally mixed and transported with the fuel and part of the air transported on the central air duct 202 through the setting of the shape of the volute-type swirl cylinder 201. It is worth noting that the flexible tube 302 is made of silicone rubber, which has good high temperature resistance and flexibility. The flexible tube 302 can be retracted to facilitate the adjustment of the aperture of the flexible tube 302. It should be explained here that the transportation of fuel and part of the air inside the central air duct 202 and the transportation of air inside the secondary air duct 203 are conventional technical means in the combustion drive process, and their working principles and operating methods are not further elaborated in this application.

[0021] Preferably, the pulling assembly includes two groups of slide plates 601 symmetrically arranged inside the installation frame 4, the two ends of the locking rope 303 are arranged in a crossed state and are respectively fixed to the two groups of slide plates 601, a threaded sleeve 602 is fixed on the slide plate 601, a double-headed screw rod 603 is rotatably connected inside the installation frame 4, and the threads at both ends of the double-headed screw rod 603 are arranged in opposite directions, the two groups of threaded sleeves 602 are respectively meshed with the two ends of the double-headed screw rod 603, and two groups of guide rods 604 are slidably connected to the slide plate 601, the two groups of guide rods 604 are symmetrically arranged on both sides of the double-headed screw rod 603, and the guide rods 604 are fixed inside the installation frame 4; It should be noted here that: the double-headed screw 603 is rotated through transmission. Since the threads at both ends of the double-headed screw 603 are arranged in opposite directions, during the rotation of the double-headed screw 603, the two sets of threaded sleeves 602 are respectively meshed with each other at the two ends of the double-headed screw 603 and the sliding guiding effect of the guide rod 604, so that the two sets of slides 601 are forced to move closer to or away from each other inside the installation frame 4. The movement of the two sets of slides 601 can control the pulling effect on the locking rope 303.

[0022] Preferably, the identification component includes a circular frame 701 disposed inside the volute-type cyclone cylinder 201, the circular frame 701 is located on one side of the discharge end of the central air duct 202 and is connected and fixed by multiple groups of L-shaped frames 702, an identification circular plate 703 is disposed inside the central air duct 202, the outer diameter of the identification circular plate 703 is smaller than the inner diameter of the central air duct 202, and an elastic component for assisting elastic connection is disposed between the identification circular plate 703 and the circular frame 701; It should be noted here that: during the transportation of fuel inside the central air duct 202, when the transported fuel is a high-density solid fuel (such as coal powder, granular fuel), due to the high density and high mass of the fuel, it will generate a large impact force on the identification circular plate 703 when transported inside the central air duct 202, pushing the identification circular plate 703 to move toward the circular frame 701. However, during the transportation of fuel inside the central air duct 202, when the transported fuel is a low-density gas fuel (such as natural gas), due to the extremely low density and small mass, the impact force on the piston is extremely small, and the piston does not move.

[0023] Preferably, the elastic component includes a plurality of sets of sleeves 801 fixed to one side of the identification circular plate 703, and the plurality of sets of sleeves 801 are arranged in a state of an annular array, a slide bar 802 is slidably connected to the sleeve 801, one end of the slide bar 802 is fixed to the circular frame 701, a spring 803 is sleeved on the outer side of the sleeve 801, and the two ends of the spring 803 are respectively arranged to abut against the circular frame 701 and the identification circular plate 703; It should be noted that: multiple sets of sleeves 801 and multiple sets of slide bars 802 are used to assist the telescopic movement of the identification circular plate 703 after being subjected to force, and the spring 803 is used to facilitate the reset of the identification circular plate 703 after the movement.

[0024] Preferably, the first linkage assembly includes a linkage rod 901 slidably connected to the circular frame 701, one end of the linkage rod 901 is fixed to the identification circular plate 703, a mounting frame 902 is fixed to the linkage rod 901, a rack 904 is connected to the mounting frame 902 through multiple sets of fixing rods 903, a mounting shaft 905 is rotatably connected to the mounting frame 4, one end of the mounting shaft 905 is fixed to one end of the double-headed screw 603, a gear 906 is fixed to the other end of the mounting shaft 905, and the gear 906 and the rack 904 are meshed with each other; It should be noted here that: during the movement of the linkage rod 901, the rack 904 is driven to move through the connection between the mounting frame 902 and the fixed rod 903. During the movement of the rack 904, the mounting shaft 905 and the double-headed screw 603 at one end of the mounting shaft 905 are rotated through the mutual meshing transmission between the rack 904 and the gear 906.

[0025] Preferably, the swirl assembly includes a support frame 1001 fixed inside the connecting tube 204, a driving shaft 1002 is rotatably connected to the support frame 1001, a mounting plate 1003 is fixed to the driving shaft 1002, a driving motor 1004 for driving the driving shaft 1002 is mounted on the support frame 1001, a plurality of guide vanes 1005 are connected to the outer side of the mounting plate 1003 through a sliding assembly, the guide vanes 1005 are arranged in a circular array around the mounting plate 1003 and are inclined, an adjusting assembly for adjusting the swirl intensity is arranged on the mounting plate 1003, and a second linkage assembly for auxiliary linkage is arranged between the linkage rod 901 and the adjusting assembly; It should be noted here that: the mounting disk 1003 on the driving shaft 1002 is rotated by driving the motor 1004. During the rotation of the mounting disk 1003, each group of guide vanes 1005 is driven to rotate. The rotation of each group of guide vanes 1005 forms a vortex, which further assists the air entering from the secondary air duct 203 and the fuel and part of the air transported from the central air duct 202 to be more fully and evenly mixed, thereby improving the combustion efficiency and reducing pollutants generated by incomplete combustion.

[0026] Preferably, the sliding assembly includes a sliding groove 1101 opened on the outer side of the mounting plate 1003, a sliding seat 1102 is slidably connected to the sliding groove 1101, and the guide vane 1005 is fixed to the end of the sliding seat 1102; It should be noted here that: the slide groove 1101 and the sliding seat 1102 can assist each group of guide vanes 1005 to be forced to move closer to or away from each other.

[0027] Preferably, the adjustment component includes a spline shaft 1201 centrally fixed to the front end of the mounting plate 1003, a push plate 1202 is slidably connected to the spline shaft 1201 through a spline hole, a plurality of through slots 1203 are provided on the mounting plate 1003, and each group of through slots 1203 is respectively communicated with each group of slide slots 1101, a connecting rod 1204 is provided on the through slots 1203, and both ends of the connecting rod 1204 are rotatably connected to the sliding seat 1102 and the push plate 1202 through a pin shaft; It should be noted here that: through transmission, the push plate 1202 is driven to move towards or away from the mounting plate 1003. During the movement of the push plate 1202, through the connecting transmission action of the connecting rod 1204, each group of sliding seats 1102 are pushed to move towards or away from each other on each group of slide grooves 1101. Through the sliding of each group of sliding seats 1102, the radius of each group of guide vanes 1005 extending outward is adjusted.

[0028] Preferably, the second linkage assembly includes a linkage disk 1301 disposed on one side of the push disk 1202, the linkage disk 1301 and the push disk 1202 are connected and fixed by multiple groups of round rods 1302, one side of the linkage disk 1301 is rotatably connected to a rotating disk 1303 through a circular groove, and one end of the linkage rod 901 is centrally fixed on the rotating disk 1303; It should be noted here that: during the movement of the linkage rod 901, the linkage disk 1301 is driven to move synchronously through the connection between the linkage rod 901 and the rotating disk 1303. During the movement of the linkage disk 1301, the push disk 1202 is driven to move toward or away from the mounting disk 1003 through the connection of the round rod 1302.

[0029] In this scheme: a swirl combustion secondary combustion boiler comprises the following steps: When a swirl combustion secondary combustion boiler is used to heat water or air with continuous fluidity, the fuel and part of the air are driven to be transported through the central air duct 202 and the connecting tube 204 toward the interior of the combustion chamber 103. During the transportation process, the external air is transported toward the interior of the volute-type swirl cylinder 201 through the secondary air duct 203. During the transportation process, the transported air forms a rotational motion inside the swirl chamber through the shape setting of the volute-type swirl cylinder 201, and is spirally mixed and transported with the fuel and part of the air transported on the central air duct 202. In the transportation process, In the process, the mounting plate 1003 on the driving shaft 1002 is rotated by driving the motor 1004. During the rotation of the mounting plate 1003, each group of guide vanes 1005 is driven to rotate. The rotation of each group of guide vanes 1005 forms a swirl, which further assists the air entering the secondary air duct 203 and the fuel and part of the air transported by the central air duct 202 to be more fully and evenly mixed, thereby improving the combustion efficiency, reducing the pollutants generated by incomplete combustion, and further improving the efficiency of the swirl combustion secondary combustion boiler when performing continuous fluidity heating treatment on water or air; When the fuel is transported inside the central air duct 202, when the transported fuel is a high-density solid fuel (such as coal powder, granular fuel), due to the high density and high quality of the fuel, a large impact force will be generated on the identification circular plate 703 when transported inside the central air duct 202, pushing the identification circular plate 703 to move toward the circular frame 701 (see Fig.12In the process of identifying the movement of the circular plate 703, the linkage rod 901 is driven to move. In the process of the movement of the linkage rod 901, the rack 904 is driven to move through the connection between the mounting frame 902 and the fixed rod 903. In the process of the movement of the rack 904, the mutual meshing transmission between the rack 904 and the gear 906 causes the mounting shaft 905 and the double-headed screw 603 at one end of the mounting shaft 905 to rotate. In the process of the rotation of the double-headed screw 603, the two groups of slides 601 are driven to move away from each other inside the mounting frame 4. The locking rope 303 is tightened and pulled through the mutual movement of the two groups of slides 601 and the connection between the two groups of slides 601 and the two ends of the locking rope 303 (see FIG. 2 ). Figure 7 ), in the process of tightening and pulling the locking rope 303, the flexible tube 302 is tightened by the locking rope 303 to reduce the use aperture of the flexible tube 302. According to the principle of fluid mechanics, when the channel aperture is reduced, the fluid flow rate increases. Due to the effect of the spiral structure, the rotation intensity of the secondary air is enhanced, providing sufficient oxygen for the high-density solid fuel, promoting complete combustion, reducing the emission of pollutants such as carbon monoxide and hydrocarbons, enhancing airflow disturbance, improving the mixing uniformity of the high-density solid fuel and air, and avoiding local shortages. The combustion is incomplete due to the oxygen, and during the movement of the linkage rod 901, the linkage plate 1301 is driven to move synchronously through the connection between the linkage rod 901 and the rotating plate 1303. During the movement of the linkage plate 1301, the push plate 1202 is driven to move toward the mounting plate 1003 through the connection of the round rod 1302. During the contraction of the push plate 1202, the connecting transmission of the connecting rod 1204 pushes each group of sliding seats 1102 to slide outward on each group of sliding grooves 1101 (see FIG. Fig.10 ), the outward extension radius of each group of guide vanes 1005 is increased by sliding of each group of sliding seats 1102. When the outward extension radius of the guide vanes 1005 increases, the guiding effect of the airflow passing through the guide vanes 1005 is enhanced, so that the rotation radius of the guide vanes 1005 is increased, thereby enhancing the swirl intensity of the airflow, strengthening the mixing effect of fuel and air, improving the combustion speed and efficiency, and stabilizing the flame center and reducing the scouring of the furnace wall; When the fuel is transported inside the central air duct 202, when the transported fuel is a low-density gas fuel (such as natural gas), due to its extremely low density and small mass, the impact force on the piston is extremely small, and the piston does not move (see Fig.11), at this time, the elastic component is used to reset the linkage rod 901 and the identification circular plate 703. During the resetting process, the same transmission is used to relieve the tightening drive of the flexible cylinder 302, and the flexible cylinder 302 is reset under the action of its own elastic force, increasing the use aperture of the flexible cylinder 302. According to the principle of fluid mechanics, when the channel aperture increases, the fluid flow rate decreases, and a lower secondary air pressure can meet the demand for sufficient mixing. If the secondary air pressure is too high, it may cause the gas fuel to flow too fast at the burner outlet, so that the flame propagation speed cannot keep up with the air flow speed, thereby causing flame instability or even flameout. Reduce the secondary air pressure The gas fuel can form a stable combustion flame at the burner outlet to ensure the stability and safety of combustion. In the process of resetting the linkage rod 901 and the identification circular plate 703, the outward extension radius of each group of guide vanes 1005 is reduced through the same transmission. Reducing the extension radius of the guide vanes 1005 can reduce the swirl intensity of the secondary air, so that the gas fuel is evenly mixed and burned with the air under the action of a relatively small swirl. This can avoid excessive swirl causing the gas fuel to stay too short in the combustion chamber 103 and be discharged from the furnace without being fully burned. It also helps to reduce the amount of nitrogen oxides generated during the combustion process.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A swirl combustion secondary combustion boiler, comprising: A boiler body (101) for supplying heat, wherein the interior of the boiler body (101) is divided into a storage chamber (102) for storing water or air and a combustion chamber (103) for heating by a heat conducting plate, and a circulation component for circulating water or air in the storage chamber (102) during heating is provided on the boiler body (101); It is characterized by further comprising: A swirl combustion component, used for mixing and transporting external air and fuel toward the interior of the combustion chamber (103); A secondary combustion control component is arranged inside the swirl combustion component and is used for secondary air supply and combustion during the fuel mixing and transportation process; and a swirl assembly, which is arranged inside the swirl combustion assembly and is used to generate a swirl during the fuel mixing and conveying process; The swirl combustion component comprises a volute swirl cylinder (201) and a central air duct (202) centrally mounted on the volute swirl cylinder (201), and a swirl chamber is formed between the inner side of the volute swirl cylinder (201) and the inner position of the central air duct (202); a secondary air duct (203) for secondary air supply and connected to the swirl chamber is mounted on the volute swirl cylinder (201); the secondary combustion-supporting control component is arranged inside the secondary air duct (203); a connecting cylinder (204) for assisting in connecting to the inside of the combustion chamber (103) is arranged between the volute swirl cylinder (201) and the boiler body (101); the swirl component is arranged inside the connecting cylinder (204); and an identification component for identifying the state of mixed fuel is arranged on the central air duct (202).

2. A swirl combustion secondary combustion boiler according to claim 1, characterized in that: The secondary combustion-supporting control component comprises an air outlet pipe (301) fixed inside the swirl chamber, the air outlet pipe (301) and the secondary air duct (203) are connected via a flexible tube (302), a locking rope (303) is sleeved on the outer side of the flexible tube (302), a mounting frame (4) is connected and fixed inside the swirl chamber via a mounting rod (5), a pulling component for pulling the locking rope (303) is provided on the mounting frame (4), and a first linkage component for auxiliary linkage is provided between the identification component and the pulling component.

3. A swirl combustion secondary combustion boiler according to claim 2, characterized in that: The pulling assembly comprises two groups of slide plates (601) symmetrically arranged inside the installation frame (4); the two ends of the locking rope (303) are arranged in a crossed state and are respectively fixed to the two groups of slide plates (601); a threaded sleeve (602) is fixed on the slide plate (601); a double-headed screw rod (603) is rotatably connected inside the installation frame (4); the threads at the two ends of the double-headed screw rod (603) are arranged in opposite directions; the two groups of threaded sleeves (602) are respectively meshed with the two ends of the double-headed screw rod (603); two groups of guide rods (604) are slidably connected to the slide plate (601); the two groups of guide rods (604) are symmetrically arranged on both sides of the double-headed screw rod (603); and the guide rods (604) are fixed inside the installation frame (4).

4. A swirl combustion secondary combustion boiler according to claim 3, characterized in that: The identification component comprises a circular frame (701) arranged inside the volute-type cyclone cylinder (201); the circular frame (701) is located on one side of the discharge end of the central air duct (202) and is connected and fixed via a plurality of groups of L-shaped frames (702); an identification circular plate (703) is arranged inside the central air duct (202); the outer diameter of the identification circular plate (703) is smaller than the inner diameter of the central air duct (202); and an elastic component for assisting elastic connection is arranged between the identification circular plate (703) and the circular frame (701).

5. A swirl combustion secondary combustion boiler according to claim 4, characterized in that: The elastic force component comprises a plurality of sets of sleeves (801) fixed to one side of the identification circular plate (703), and the plurality of sets of sleeves (801) are arranged in a state of an annular array, a sliding rod (802) is slidably connected to the sleeves (801), one end of the sliding rod (802) is fixed to the circular frame (701), a spring (803) is sleeved on the outer side of the sleeve (801), and two ends of the spring (803) are respectively arranged to abut against the circular frame (701) and the identification circular plate (703).

6. A swirl combustion secondary combustion boiler according to claim 5, characterized in that: The first linkage assembly comprises a linkage rod (901) slidably connected to the circular frame (701), one end of the linkage rod (901) being fixed to the identification circular plate (703), a mounting frame (902) being fixed to the linkage rod (901), a rack (904) being connected to the mounting frame (902) via a plurality of sets of fixing rods (903), a mounting shaft (905) being rotatably connected to the mounting frame (4), one end of the mounting shaft (905) being fixed to one end of the double-headed lead screw (603), a gear (906) being fixed to the other end of the mounting shaft (905), and the gear (906) and the rack (904) being arranged to mesh with each other.

7. A swirl combustion secondary combustion boiler according to claim 6, characterized in that: The swirl assembly comprises a support frame (1001) fixed inside a connecting tube (204); a driving shaft (1002) is rotatably connected to the support frame (1001); a mounting plate (1003) is fixed to the driving shaft (1002); a driving motor (1004) for driving the driving shaft (1002) is mounted on the support frame (1001); a plurality of guide vanes (1005) are connected to the outer side of the mounting plate (1003) via a sliding assembly; the guide vanes (1005) are arranged in a circular array around the mounting plate (1003) and are tilted; an adjustment assembly for adjusting the swirl intensity is arranged on the mounting plate (1003); and a second linkage assembly for assisting linkage is arranged between the linkage rod (901) and the adjustment assembly.

8. The swirl combustion secondary combustion boiler according to claim 7, characterized in that: The sliding assembly comprises a sliding groove (1101) opened on the outer side of the mounting plate (1003), a sliding seat (1102) is slidably connected to the sliding groove (1101), and the guide vane (1005) is fixed to the end of the sliding seat (1102).

9. The swirl combustion secondary combustion boiler according to claim 7, characterized in that: The adjustment component comprises a spline shaft (1201) fixed centrally at the front end of the mounting plate (1003); a push plate (1202) is slidably connected to the spline shaft (1201) via a spline hole; a plurality of through grooves (1203) are provided on the mounting plate (1003), and each group of through grooves (1203) is communicated with each group of slide grooves (1101); a connecting rod (1204) is provided on the through groove (1203); and two ends of the connecting rod (1204) are rotatably connected to the sliding seat (1102) and the push plate (1202) via a pin shaft.

10. The swirl combustion secondary combustion boiler according to claim 9, characterized in that: The second linkage assembly comprises a linkage disk (1301) arranged on one side of the push disk (1202); the linkage disk (1301) and the push disk (1202) are connected and fixed via a plurality of groups of round rods (1302); one side of the linkage disk (1301) is rotatably connected to a rotating disk (1303) via a circular groove; one end of the linkage rod (901) is centrally fixed on the rotating disk (1303).

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