System capable of reducing exhaust gas temperature of boiler
By designing a system of heat exchange processors and regulating mechanisms, the problem of excessively high boiler exhaust temperature was solved, efficient cooling and waste heat recovery were achieved, NOx emissions were reduced, and the economy and environmental performance of the boiler were improved.
Patent Information
- Application Number
- CN202511100851.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2025-10-10
Smart Images
Figure CN120760152A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of boiler smoke exhaust, and in particular relates to a system capable of reducing the temperature of boiler smoke exhaust. Background Art
[0002] With global industrial development and the continued rise in energy demand, the energy efficiency limitations of traditional boilers are becoming increasingly apparent. On the one hand, rising energy costs are driving companies' urgent need to reduce operating costs; on the other, higher standards are being placed on boiler equipment for energy conservation and emission reduction. Against this backdrop, energy-saving boilers and auxiliary equipment systems have become a focus of industry attention. These systems strive to effectively reduce boiler exhaust temperatures and improve overall energy efficiency through technological optimization, thereby meeting industrial heating needs while helping companies achieve sustainable development and comply with relevant policies.
[0003] After the combustion of the combustible materials inside the boiler is completed, flue gas is generated and discharged. In order to meet the needs of green development, it is usually recovered for energy. The flue gas generated by existing boilers has too high a heat content. Direct emission will cause air pollution and destroy the balance of the ecosystem, affecting the growth and reproduction of plants and animals. At the same time, some high-temperature flue gas will flow out after heat exchange, making the flue gas discharge temperature too high. In addition, the oxygen content inside the boiler during combustion is usually uncontrollable, so the boiler combustion under conditions of excessive oxygen content will produce a large amount of NOx gas and the combustion temperature is high, so the flue gas discharged will cause serious pollution to the environment. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a system capable of reducing the exhaust temperature of boiler smoke.
[0005] The technical solution adopted to solve the above technical problems is: a system capable of reducing the exhaust temperature of boiler flue gas, comprising a heat exchange processor, a smoke inlet mechanism installed on the top of the heat exchange processor, and a flue gas cooler installed on the top of the smoke inlet mechanism for cooling the flue gas and separating the high-temperature flue gas into low-temperature flue gas, so that the low-temperature flue gas can be discharged normally and the high-temperature flue gas can be recirculated; The flue gas cooler includes a cone and a cylinder, with a threaded guide plate installed between the cone and the cylinder, which is used for the high-temperature gas to rotate along the threaded guide plate multiple times, thereby forming a low-pressure area inside, and the gas collides with the cone and rebounds; The outer wall of the smoke inlet mechanism is equipped with an adjustment mechanism for adjusting the direction of smoke entry and controlling the flow speed of smoke; The adjustment mechanism includes two second supports that are staggered and unequally spaced, a rotating shaft is fixed between the two second supports, and a first support is rotated on the outer wall of the rotating shaft for supporting and controlling the angles of the two second supports.
[0006] A smoke exhaust pipe is provided at the bottom of the heat exchange processor, a boiler body is installed at the output end of the smoke exhaust pipe, a plurality of external valves are installed on the top of the boiler body, an automatic control system for real-time monitoring and adjustment of the exhaust temperature of the flue gas cooler is installed at the front end of the outer wall of the boiler body, a burner is installed on one side of the boiler body, and an induced draft fan is installed on the top of the flue gas cooler.
[0007] Furthermore, the smoke inlet mechanism includes a threaded smoke outlet pipe, a tapered tube that can accelerate the flow rate of smoke is installed at the other end of the threaded smoke outlet pipe, a straight tube is fixed to the output end of the tapered tube, and an inclined smoke outlet is provided at the other end of the straight tube, a rubber movable ring is fixed to the outer wall of the straight tube, which is used to adjust the sealing space for the movement of the straight tube, a connecting pipe is installed on the top of the heat exchange processor, a first check valve is installed inside the connecting pipe, and the two second supports are rotatably connected to the corresponding straight pipes respectively.
[0008] Through the above technical solution, the burner is used to heat the inside of the boiler body, and then flue gas is generated. A plurality of external valves are connected to the outside according to the specific usage conditions, and the induced draft fan is started to assist the flue gas discharge. The automatic control system controls the working state of the cooler according to the real-time monitored flue gas temperature to ensure that the flue gas temperature is maintained at a low level, thereby improving the economy and energy efficiency of the boiler operation and reducing energy consumption. This system can maximize the use of waste heat resources by reducing the flue gas temperature and recovering waste heat, thereby reducing the energy consumption of the boiler. Therefore, it conforms to the design concept of energy-saving boilers and auxiliary equipment. When in use, when the flue gas inside the boiler is discharged from the flue gas pipe, and The flue gas is initially utilized by the heat exchange processor, and the high-temperature flue gas that has not been completely heat-exchanged will be guided and discharged by the smoke inlet mechanism, and the entry direction is controlled. Specifically, when the untreated flue gas flows into the connecting pipe, the flue gas will then pass through the conical tube from the two threaded smoke outlet pipes. It should be understood that the conical tube is in a state of large end and small end, so the flue gas will flow rapidly, increasing the gas flow rate, and then the flue gas will be discharged from the inclined smoke outlet on the straight tube. It should be noted that the inclined smoke outlet is pointed, and the inclined end is close to the inner wall. Therefore, the gas discharge is close to the internal flow to avoid interference.
[0009] Furthermore, two fixed columns are installed on the outer wall of the cone, and cooling pipes are installed on the other ends of the two fixed columns and the outer wall of the cylinder, and the inner wall diameter of the cooling pipe is larger than the top and bottom diameters of the cone. A cold air exhaust channel for discharging low-temperature flue gas is opened inside the cylinder, and a return pipe is fixed on the outer wall of the cooling pipe at the bottom of the cone, which is used to return part of the high-temperature gas to the boiler body for re-combustion. The other end of the return pipe is fixedly connected to the outer wall of the boiler body, and a second check valve is installed inside the return pipe. The other end of the rubber movable ring is connected to the cooling pipe.
[0010] Through the above technical solution, after the flue gas enters the flue gas cooler from the smoke inlet mechanism, the high-temperature flue gas that has not been fully heat-exchanged needs to be further processed to further cool the flue gas. The flue gas is cooled by a special structure. The first purpose is to save resources. The second purpose is to divide the high-temperature flue gas into low-temperature flue gas and high-temperature flue gas. The low-temperature flue gas is discharged, and the high-temperature flue gas is cooled for the second time. The remaining high-temperature flue gas will flow back to the boiler body and burn again, so that part of the low-temperature exhaust gas is introduced into the combustion area. Its core goal is to dilute the oxygen concentration in the combustion area and reduce the combustion temperature to reduce NOx emissions (especially thermal NOx). It should be understood that the incoming high-temperature flue gas contains a large amount of inert gases such as (CO2, N2). These gases do not participate in the combustion reaction, but will squeeze the oxygen ratio in the combustion area, causing the oxygen concentration to drop from about 21% in the air. The oxygen concentration is reduced to approximately 15%-18%. Consequently, the reduced oxygen concentration slows the combustion reaction rate, thereby lowering the flame temperature and suppressing the formation of thermal NOx. This state does not affect the function of the boiler itself. Specifically, when the high-temperature flue gas enters the cooling tube and moves against the wall, it rotates along the threaded guide plate. It is important to understand that the threaded guide plate only dictates the approximate direction of the airflow rotation and does not affect the number of revolutions, which is determined by the airflow velocity. Therefore, when the high-temperature flue gas moves along the rotating airflow, it is important to note that, due to the fluid mechanics of fluid dynamics, a low-pressure area forms next to the high-speed fluid. This low pressure causes the gas to expand, which lowers its temperature. Furthermore, the additional centrifugal force causes the intermediate pressure to drop, causing the high-temperature flue gas to flow out of the gap between the bottom of the cone and the cooling tube. Simultaneously, some flue gas will enter the boiler through the return pipe, while another portion will pass through the first check valve for secondary cooling. As the high-speed rotating gas flows from the outside, the flue gas at the middle end forms a low-pressure collision cone with the rotating reflux, and is discharged through the cold air exhaust channel inside the cylinder.
[0011] Furthermore, a support shaft is fixed between the two second support bodies on the side away from the rotation axis, and a first connecting rod is rotatably connected to the outer wall of the rotation shaft, the other end of the first connecting rod is rotatably connected to the second connecting rod connected to the support column, and the other end of the second connecting rod is rotatably connected to the fixed seat, and the inner wall of the fixed seat is fixedly connected to the cooling pipe. By moving the position where the first connecting rod and the second connecting rod are connected to the support column, the angle between the two second support bodies and the first support body is changed.
[0012] Through the above technical solution, when high-temperature flue gas passes through the straight pipe, the adjustment mechanism is used to control the inclination height of the straight pipe, thereby controlling the change in the distance angle between the flue gas entering the flue gas cooler and the inner wall, so that the flow rate of the flue gas inflow changes, thereby changing the number of rotations of the flue gas and changing the air pressure. Specifically, when the first connecting rod and the second connecting rod are moved to the position where the support column is connected, the first connecting rod drives the second support body on both sides of the support shaft to rotate about the rotation axis, thereby increasing the distance.
[0013] Furthermore, a driving mechanism is installed inside the first support body for adjusting the position in which the first connecting rod and the second connecting rod are connected with the support column. A sliding groove is provided on the inner wall surface of the first support body, and a sliding seat is slidably connected inside the sliding groove, and the inner groove of the sliding seat is fixed to the support column of the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod are driven to change position by the movement of the sliding seat. Fixed plates are fixed on the inner wall surface of the first support body at both ends of the sliding groove, and a motor is fixedly connected to the surface of one of the fixed plates, and a threaded rod is fixedly connected to the output end of the motor, and the outer wall of the threaded rod is threadedly connected to the sliding seat, and the sliding seat on the outer wall of the threaded rod is driven to move by the rotation of the motor.
[0014] Through the above technical solution, when smoke is ready to be exhausted, the driving mechanism is used for drive adjustment. Specifically, the motor is started to rotate to drive the slide on the outer wall of the threaded rod to move, and then the slide is driven to move along the slide groove.
[0015] The beneficial effects of the present invention are as follows: (1) The present invention can quickly cool down the high-temperature flue gas that has not been fully heat-exchanged by designing a smoke inlet mechanism, a smoke cooler and a regulating mechanism, thereby reducing the amount of high-temperature flue gas discharged and protecting the environment. In addition, the high-temperature gas generated by the cooling can be cooled for a second time, and part of the gas can also enter the boiler body and burn again, increasing the content of different gases inside and reducing other polluting gases generated by combustion; (2) The present invention adjusts the input speed of the boiler flue gas discharged into the cooler through the smoke inlet mechanism and the smoke cooler, determines the transmission speed of the flue gas in the cooler according to the exhaust temperature of the flue gas, and at the same time adjusts the transmission speed of the airflow by different transmission speeds. The degree of heat dissipation can effectively remove the scale inside the cooler. In addition, the flue gas will be divided into two air flows, high temperature and low temperature, through the cooler. The low temperature part will be discharged, while the high temperature part will be cooled for a second time. The remaining part will enter the boiler and burn again, increasing the volume of different gases inside the boiler, determining the degree of combustion, and thus reducing the generation of harmful gases; (3) The present invention can determine the input direction of the flue gas entering the cooler through the adjustment mechanism, effectively control the collision of the flue gas with the cooler, and control the flue gas flow rate. In addition, the spiral flow of the flue gas is maintained in conjunction with the internal threaded plate of the cooler, which helps to accelerate the flow rate of the airflow. The spiral effect can increase the kinetic energy of the airflow and reduce fluid resistance. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the present invention from a first perspective; Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a structural schematic diagram of the flue gas cooler and the smoke inlet mechanism of the present invention; Figure 5 yes Figure 4 A partial enlarged view of point A in the middle; Figure 6 Schematic diagram of the internal structure of the flue gas cooler of the present invention; Figure 7 yes Figure 6 A partial enlarged view of point B in the middle; Figure 8 It is a structural schematic diagram of the driving mechanism and the regulating mechanism of the present invention; Figure 9 It is a schematic diagram of the internal structure of the regulating mechanism of the present invention.
[0017] Reference numerals: 11, boiler body; 12, automatic control system; 13, external valve; 14, burner; 15, smoke outlet pipe; 16, heat exchange processor; 17, induced draft fan; 2, smoke inlet mechanism; 21, connecting pipe; 22, threaded smoke outlet pipe; 23, tapered pipe; 24, straight pipe; 25, rubber ring; 26, inclined smoke outlet; 27, first check valve; 3, flue gas cooler; 31, cooling pipe; 32, threaded guide plate ; 33. Cone; 34. Fixed column; 35. Cylinder; 36. Cold air exhaust channel; 37. Return pipe; 38. Second check valve; 4. Adjustment mechanism; 41. Fixed seat; 42. First support body; 43. Rotating shaft; 44. Second support body; 45. Support shaft; 46. First connecting rod; 47. Second connecting rod; 5. Driving mechanism; 51. Fixed plate; 52. Motor; 53. Threaded rod; 54. Slide seat; 55. Slide groove. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0019] like Figures 1-9As shown, a system capable of reducing the exhaust temperature of a boiler in this embodiment includes a heat exchange processor 16, a smoke inlet mechanism 2 is installed on the top of the heat exchange processor 16, a smoke outlet pipe 15 for exhausting smoke is provided at the bottom of the heat exchange processor 16, a boiler body 11 is installed at the output end of the smoke outlet pipe 15, a plurality of external valves 13 are installed on the top of the boiler body 11, an automatic control system 12 for real-time monitoring and adjusting the exhaust temperature of the flue gas cooler 3 is installed at the front end of the outer wall of the boiler body 11, a burner 14 is installed on one side of the boiler body 11, an induced draft fan 17 is installed on the top of the flue gas cooler 3, and the smoke inlet mechanism 2 includes a threaded smoke outlet pipe 22 , the other end of the threaded smoke outlet pipe 22 is equipped with a tapered tube 23 that can speed up the flow rate of flue gas, a straight tube 24 is fixed to the output end of the tapered tube 23, and the other end of the straight tube 24 is provided with an inclined smoke outlet 26, a rubber movable ring 25 is fixed to the outer wall of the straight tube 24, which is used to adjust the sealing space of the straight tube 24 activity, a connecting pipe 21 is installed on the top of the heat exchange processor 16, a first check valve 27 is installed inside the connecting pipe 21, and two second supports 44 are respectively rotatably connected to the corresponding straight tube 24, and the interior of the boiler body 11 is heated by the burner 14, and then flue gas is generated, and multiple external valves 13 are adjusted according to specific usage conditions. The exhaust gas temperature is monitored in real time and the exhaust fan 17 is started to assist in exhausting the flue gas. The automatic control system 12 controls the working state of the cooler according to the exhaust gas temperature monitored in real time to ensure that the exhaust gas temperature is maintained at a low level, thereby improving the economy and energy efficiency of the boiler operation and reducing energy consumption. This system can maximize the use of waste heat resources by reducing the exhaust gas temperature and recovering waste heat, thereby reducing the energy consumption of the boiler. Therefore, it conforms to the design concept of energy-saving boilers and auxiliary equipment. When in use, when the flue gas inside the boiler is discharged from the exhaust pipe 15, and the heat exchange processor 16 is used to perform preliminary utilization of the flue gas, the high temperature that has not been fully heat-exchanged The smoke will be guided and discharged by the smoke inlet mechanism 2, and the entry direction will be controlled. Specifically, when the untreated smoke flows into the connecting pipe 21, the smoke will then pass through the tapered tube 23 from the two threaded smoke outlet pipes 22. It should be understood that the tapered tube 23 is in a state with one end larger than the other end, so the smoke will flow rapidly, increasing the gas flow rate. Then the smoke will be discharged from the inclined smoke outlet 26 on the straight tube 24. It should be noted that the inclined smoke outlet 26 is pointed, and the inclined end is close to the inner wall. Therefore, the gas discharge is close to the internal flow to avoid interference.
[0020] like Figure 4 and Figure 6-Figure 7As shown, a flue gas cooler 3 is installed on the top of the smoke inlet mechanism 2, which is used to cool the flue gas and separate the high-temperature flue gas into low-temperature flue gas, so that the low-temperature flue gas can be discharged normally and the high-temperature flue gas can be refluxed for a second time. The flue gas cooler 3 includes a cone 33 and a cylinder 35. A threaded guide plate 32 is installed between the cone 33 and the cylinder 35, which is used for the high-temperature gas to rotate along the threaded guide plate 32 multiple times, thereby forming a low-pressure area inside. The gas collides with the cone 33 and rebounds. Two fixed columns 34 are installed on the outer wall of the cone 33, and a cooling pipe 31 is installed on the other end of the two fixed columns 34 and the outer wall of the cylinder 35. The inner wall diameter of the cooling pipe 31 is larger than the top and bottom diameters of the cone 33. A cold air exhaust channel 36 for exhausting the low-temperature flue gas is opened inside the cylinder 35. The outer wall of the cooling pipe 31 A return pipe 37 is fixed at the bottom of the cone 33, which is used to return part of the high-temperature gas to the boiler body 11 for re-combustion. The other end of the return pipe 37 is fixedly connected to the outer wall of the boiler body 11. A second check valve 38 is installed inside the return pipe 37. The other end of the rubber movable ring 25 is connected to the cooling pipe 31. When the flue gas enters the flue gas cooler 3 from the smoke inlet mechanism 2, it is necessary to further process the high-temperature flue gas that has not been fully heat-exchanged so that the flue gas is further cooled. The flue gas is cooled by a special structure. The first purpose is to save resources. The second purpose is to divide the high-temperature flue gas into low-temperature flue gas and high-temperature flue gas. The low-temperature flue gas is discharged, and the high-temperature flue gas is cooled for the second time. The remaining high-temperature flue gas will flow back to the boiler body 11 and burn again, so that part of the low-temperature flue gas is cooled. The core goal of introducing warm exhaust gas into the combustion area is to dilute the oxygen concentration in the combustion area and reduce the combustion temperature to reduce NOx emissions (especially thermal NOx). It should be understood that the incoming high-temperature flue gas contains a large amount of inert gases (such as CO2 and N2). These gases do not participate in the combustion reaction, but will occupy the oxygen ratio in the combustion area, reducing the oxygen concentration from about 21% in the air to about 15%~18%. Therefore, the reduction in oxygen concentration will slow down the combustion reaction rate, thereby reducing the flame temperature and inhibiting the generation of thermal NOx. In this state, it does not affect the function of the boiler body 11. Specifically, when the high-temperature flue gas enters the cooling tube 31 and moves against the wall, the high-temperature flue gas will rotate along the threaded guide plate 32, and it is necessary to It should be understood that the threaded guide plate 32 only specifies the approximate direction of airflow rotation, and does not affect the number of airflow rotations, which is specifically determined by the airflow velocity. Therefore, when the high-temperature flue gas moves according to the rotating airflow, it should be noted that at this time, due to the fluid mechanics, a low-pressure area will appear next to the high-speed fluid. The low pressure causes the gas to expand, and the gas expansion temperature decreases. The additional effect of centrifugal force causes the intermediate pressure to drop, and the high-temperature flue gas will flow out from the gap between the bottom of the cone 33 and the cooling pipe 31. At the same time, part of the flue gas will enter the boiler body 11 from the return pipe 37, and the other part will pass through the first check valve 27 for secondary cooling. When the high-speed flowing gas flows from the outside, the middle-end flue gas forms a low-pressure collision cone 33 and rotates backflow.As the air flows, it is discharged from the cold air discharge channel 36 inside the cylinder 35.
[0021] like Figure 8-Figure 9 As shown, an adjustment mechanism 4 is installed on the outer wall of the smoke inlet mechanism 2 for adjusting the direction of smoke entry and controlling the flow rate of smoke. The adjustment mechanism 4 includes two second supports 44 that are staggered and unequally spaced. A rotating shaft 43 is fixed between the two second supports 44. A first support 42 is rotatably provided on the outer wall of the rotating shaft 43 for supporting and controlling the angles of the two second supports 44. A support shaft 45 is fixed on the side away from the rotating shaft 43 between the two second supports 44, and a first connecting rod 46 is rotatably provided on the outer wall of the rotating shaft 43. The other end of the first connecting rod 46 is rotatably connected to a second connecting rod 47 connected to a support column. The other end of the second connecting rod 47 is rotatably connected to a fixing seat 41. The inner wall of the fixing seat 41 is connected to the cooling pipe 31 is fixedly connected, and the angle between the two second supports 44 and the first support 42 is changed by moving the first connecting rod 46 and the second connecting rod 47 to the position where the support column is connected. When the high-temperature flue gas passes through the straight pipe 24, the adjustment mechanism 4 is used to control the inclination height of the straight pipe 24, thereby controlling the change in the angle between the flue gas entering the flue gas cooler 3 and the inner wall, so that the flow rate of the flue gas inflow changes, thereby changing the number of rotations of the flue gas and the air pressure. Specifically, when the first connecting rod 46 and the second connecting rod 47 are moved to the position where the support column is connected, the first connecting rod 46 drives the second supports 44 on both sides of the support shaft 45 to rotate with the rotating shaft 43, thereby increasing the distance.
[0022] like Figure 9 As shown, a driving mechanism 5 is installed inside the first support body 42 for adjusting the position of the first connecting rod 46 and the second connecting rod 47 connected to the support column. A sliding groove 55 is provided on the inner wall surface of the first support body 42, and a sliding seat 54 is slidably connected inside the sliding groove 55. The internal groove of the sliding seat 54 is fixed to the support column of the first connecting rod 46 and the second connecting rod 47, and the first connecting rod 46 and the second connecting rod 47 are driven to change their positions through the movement of the sliding seat 54. A fixing plate 51 is fixed to the inner wall surface of the first support body 42 at both ends of the sliding groove 55, and a motor 52 is fixedly connected to the surface of one of the fixing plates 51. A threaded rod 53 is fixedly connected to the output end of the motor 52. The outer wall of the threaded rod 53 is threadedly connected to the sliding seat 54, and the rotation of the motor 52 drives the sliding seat 54 on the outer wall of the threaded rod 53 to move. When smoke exhaust is ready, the driving mechanism 5 is used to perform drive adjustment. Specifically, the motor 52 is started to rotate to drive the sliding seat 54 on the outer wall of the threaded rod 53 to move, thereby driving the sliding seat 54 to move along the sliding groove 55.
[0023] The working principle of the embodiment is as follows: the inside of the boiler body 11 is heated by the burner 14, then smoke is generated, and the plurality of external connection valves 13 are externally connected according to specific use conditions, and the induced draft fan 17 is started to assist smoke exhaust; when the smoke is ready to be exhausted, the motor 52 is started to rotate and drive the sliding seat 54 on the outer wall of the threaded rod 53 to move, thereby driving the sliding seat 54 to move along the sliding groove 55, thereby driving the first connecting rod 46 and the second connecting rod 47 to move at the position connected with the supporting column, so that the first connecting rod 46 drives the second supporting body 44 on both sides of the supporting shaft 45 to rotate around the rotating shaft 43, thereby lifting the straight pipe 24 and the cooling pipe 31 to a certain angle, then when the smoke in the boiler is exhausted from the smoke outlet pipe 15, the heat exchange processor 16 is used to preliminarily utilize the smoke, when the unprocessed smoke flows into the connecting pipe 21, then the smoke will pass through the conical pipe 23 from the two threaded smoke outlet pipes 22, then the smoke will be exhausted from the inclined smoke outlet 26 on the straight pipe 24, when the high-temperature smoke enters the cooling pipe 31 and performs wall-attached motion, at this time the high-temperature smoke will rotate along the threaded flow guide plate 32, so that the high-temperature smoke moves according to the rotating airflow, then the high-temperature smoke will flow out from the gap between the bottom of the conical body 33 and the cooling pipe 31, and part of the smoke will enter the inside of the boiler body 11 from the backflow pipe 37, and the other part will pass through the first check valve 27 to be cooled again, at the same time, the middle-end smoke forms low-pressure collision conical body 33 rotating backflow, and flows from the cold gas exhaust channel 36 in the cylinder 35 to be exhausted.
[0024] The above merely describes the preferred embodiment of the present application, but is not used to limit the protection scope of the present application.
Claims
1. A system capable of reducing the exhaust temperature of a boiler, comprising a heat exchange processor (16), characterized in that: A smoke inlet mechanism (2) is installed on the top of the heat exchange processor (16), and a smoke cooler (3) is installed on the top of the smoke inlet mechanism (2) for cooling the smoke to separate high-temperature and low-temperature smoke, so that the low-temperature smoke can be discharged normally and the high-temperature smoke can be recirculated for a second time; The flue gas cooler (3) comprises a cone (33) and a cylinder (35), wherein a threaded guide plate (32) is installed between the cone (33) and the cylinder (35), and is used for the high-temperature gas to rotate multiple times along the threaded guide plate (32), thereby forming a low-pressure area inside, and the gas collides with the cone (33) and rebounds; The outer wall of the smoke inlet mechanism (2) is provided with an adjustment mechanism (4) for adjusting the direction of smoke inlet and controlling the flow speed of smoke; The adjustment mechanism (4) comprises two second supports (44) that are staggered and unequally spaced, a rotation shaft (43) being fixed between the two second supports (44), and a first support (42) being rotatably mounted on the outer wall of the rotation shaft (43) for supporting and controlling the angles of the two second supports (44).
2. The system for reducing boiler exhaust gas temperature according to claim 1, characterized in that: A smoke exhaust pipe (15) is provided at the bottom of the heat exchange processor (16), a boiler body (11) is installed at the output end of the smoke exhaust pipe (15), a plurality of external valves (13) are installed on the top of the boiler body (11), an automatic control system (12) for real-time monitoring and regulating the exhaust temperature of the flue gas cooler (3) is installed at the front end of the outer wall of the boiler body (11), a burner (14) is installed on one side of the boiler body (11), and an induced draft fan (17) is installed on the top of the flue gas cooler (3).
3. The system for reducing boiler exhaust gas temperature according to claim 2, characterized in that: The smoke inlet mechanism (2) comprises a threaded smoke outlet pipe (22), the other end of which is provided with a tapered pipe (23) capable of accelerating the flow velocity of smoke, a straight pipe (24) being fixed to the output end of the tapered pipe (23), and an inclined smoke outlet (26) being provided at the other end of the straight pipe (24), and a rubber movable ring (25) being fixed to the outer wall of the straight pipe (24) for adjusting the sealing space for the movement of the straight pipe (24).
4. The system for reducing boiler exhaust gas temperature according to claim 3, characterized in that: A connecting pipe (21) is installed on the top of the heat exchange processor (16), a first check valve (27) is installed inside the connecting pipe (21), and the two second supports (44) are rotatably connected to the corresponding straight pipes (24) respectively.
5. The system for reducing boiler exhaust gas temperature according to claim 3, characterized in that: Two fixing columns (34) are installed on the outer wall of the cone (33), and cooling pipes (31) are installed on the other ends of the two fixing columns (34) and the outer wall of the cylinder (35). The inner wall diameter of the cooling pipe (31) is larger than the top and bottom diameters of the cone (33). A cold air discharge channel (36) for discharging low-temperature flue gas is opened inside the cylinder (35).
6. The system for reducing boiler exhaust gas temperature according to claim 5, characterized in that: A return pipe (37) is fixed on the outer wall of the cooling pipe (31) at the bottom of the cone (33), which is used to return part of the high-temperature gas to the inside of the boiler body (11) for re-combustion. The other end of the return pipe (37) is fixedly connected to the outer wall of the boiler body (11). A second check valve (38) is installed inside the return pipe (37). The other end of the rubber movable ring (25) is connected to the cooling pipe (31).
7. The system for reducing boiler exhaust gas temperature according to claim 5, characterized in that: A support shaft (45) is fixed between the two second support bodies (44) on a side away from the rotation shaft (43), and a first connecting rod (46) is rotatably connected to the outer wall of the rotation shaft (43). The other end of the first connecting rod (46) is rotatably connected to a second connecting rod (47) connected to the support column, and the other end of the second connecting rod (47) is rotatably connected to a fixed seat (41).
8. The system capable of reducing boiler exhaust temperature according to claim 7, characterized in that: The inner wall of the fixing seat (41) is fixedly connected to the cooling pipe (31), and the angle between the two second supporting bodies (44) and the first supporting body (42) is changed by moving the position of the first connecting rod (46) and the second connecting rod (47) connected to the support column.
9. The system for reducing boiler exhaust gas temperature according to claim 7, characterized in that: A driving mechanism (5) is installed inside the first support body (42) for adjusting the position of the first connecting rod (46) and the second connecting rod (47) connected to the support column. A sliding groove (55) is provided on the inner wall surface of the first support body (42). A sliding seat (54) is slidably connected inside the sliding groove (55). The internal groove of the sliding seat (54) is fixed to the support column of the first connecting rod (46) and the second connecting rod (47). The first connecting rod (46) and the second connecting rod (47) are driven to change their positions by the movement of the sliding seat (54).
10. The system capable of reducing boiler exhaust temperature according to claim 9, characterized in that: A fixing plate (51) located at both ends of the slide groove (55) is fixed to the inner wall surface of the first support body (42), wherein a motor (52) is fixedly connected to the surface of one of the fixing plates (51), and a threaded rod (53) is fixedly connected to the output end of the motor (52), and the outer wall of the threaded rod (53) is threadedly connected to the slide seat (54), and the slide seat (54) on the outer wall of the threaded rod (53) is driven to move by the rotation of the motor (52).