An integrated circulating hot water boiler

Abstract

The application discloses an integrated circulating hot water boiler and relates to the technical field of hot water boilers.The integrated circulating hot water boiler comprises a boiler cylinder, a burner is arranged on the side of the boiler cylinder, a corrugated fire tube is arranged in the boiler cylinder, smoke pipe channels are uniformly arranged outside the corrugated fire tube, a flue pipe is arranged above the side of the boiler cylinder, and an airflow balancing assembly is arranged between the burner and the corrugated fire tube.The airflow balancing assembly comprises an outer spiral cylinder and an inner straight cylinder, so that the flame airflow output by the burner flows into the corrugated fire tube in a composite mode of outer spiral and inner straight, first, the inner layer straight flow structure combs the flame into stable columnar flow through a flow guide vane, so that flame dispersion caused by turbulence is avoided, and the outer layer spiral flow imparts a rotating characteristic to the flame through a curved track and a rotating flow piece, so that fuel and air are more fully mixed, and the combination of the two can not only ensure that the core temperature of the flame is stable, but also can utilize the outer layer rotating airflow to enhance the combustion intensity of the edge region, so that the overall combustion efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of hot water boiler technology, specifically to an integrated circulating hot water boiler. Background Technology

[0002] The integrated circulating hot water boiler is a highly efficient and energy-saving hot water supply device. It adopts a closed-loop circulation system design, integrating heating, water storage, and circulation functions into one unit. Its core feature is that it achieves rapid hot water circulation through a built-in circulation pump, reducing heat loss in pipelines and ensuring stable outlet water temperature. The equipment also has multiple safety protection functions, such as anti-dry burning and over-temperature alarm. It is reliable in operation and easy to maintain. In the field of oil extraction and processing, this boiler can be used in key links such as wellhead heat tracing and oil pipeline insulation, which is of great significance for ensuring the continuity and safety of oil production.

[0003] In oil extraction and processing scenarios, hot water boilers, as core heat energy conversion equipment, have significant impacts on production due to defects in their combustion heat exchange technology: 1. Compared to existing hot water boilers, which rely on high-efficiency burners to achieve heat energy conversion through fuel-air mixing and combustion, utilizing furnace radiation and convection tube bundle heat exchange, this technology conflicts with the precise heat energy control requirements of oil extraction and processing. The burner uses a direct-flow injection angle aligned with the fire tube axis. When the flame flows rapidly into the fire tube in a direct-flow manner, the internal space of the fire tube suddenly increases compared to the burner outlet. According to fluid mechanics principles, this leads to airflow turbulence. At the same time, the direct-flow lacks a constraint and guiding structure for the flame, causing it to easily disperse and become difficult to maintain a stable columnar flow pattern. This results in uneven contact between the flame and the inner wall of the fire tube. In processes such as associated gas recovery heating in oil extraction and waste heat utilization in refining units, the boiler's heating surface metal (such as heat-resistant alloy steel) suffers uneven thermal stress due to localized high-temperature scouring. Analogous to fatigue damage of oil pipes under high pressure and variable temperature conditions, the pipe wall is prone to creep, bulging, or even bursting, directly affecting the continuous supply of heat energy for oil processing.

[0004] In addition, flame dispersion may lead to incomplete combustion, increasing fuel consumption and pollutant emissions. Existing burners use a fixed air-fuel ratio design, but associated gas has a complex composition and fluctuates greatly in calorific value. A fixed ratio will lead to incomplete combustion. Similar to the reaction imbalance caused by fluctuations in feed properties in catalytic cracking units of oil refineries, this results in reduced boiler thermal efficiency and excessive emissions of unburned materials. These defects directly restrict the energy utilization efficiency and production safety in oil extraction and processing.

[0005] 2. At the same time, existing technologies achieve symmetrical flue gas emission by aligning the flame jet direction of the burner with the fire tube axis and coordinating the equidistant distribution of the chimney pipes. However, due to the natural upward flow characteristic of hot air (hot air is less dense than cold air and rises spontaneously under the action of buoyancy), when the flue gas discharged from the corrugated fire tube enters the chimney pipe, the upper chimney is more likely to draw in flue gas due to its positional advantage. In addition, the lack of an active guiding and balancing structure for flue gas flow makes it impossible to overcome the flow difference caused by the rising hot air, making it difficult to achieve uniform air intake in each chimney.

[0006] Uneven flue gas distribution can lead to excessive load on some parts of the chimney, increased local wear, and shortened chimney lifespan. Inefficient use of the lower chimney reduces exhaust efficiency, increases boiler back pressure, and affects combustion stability. Uneven flue gas distribution also reduces heat recovery efficiency, resulting in energy waste. Furthermore, long-term asymmetrical airflow can cause stress concentration at the connection between the fire tube and the chimney, increasing the risk of equipment failure, maintenance costs, and downtime frequency.

[0007] Therefore, in view of this, the present invention proposes an integrated circulating hot water boiler to make up for and improve the shortcomings of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides an integrated circulating hot water boiler to solve the technical problems mentioned in the background section.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an integrated circulating hot water boiler, comprising a boiler drum, a burner installed on the side of the boiler drum, corrugated fire tubes installed inside the boiler drum, flue pipes uniformly installed outside the corrugated fire tubes, a flue pipe installed on the upper side of the boiler drum, and an airflow balancing component provided between the burner and the corrugated fire tubes. The airflow balancing component includes an outer spiral cylinder and an inner direct current cylinder. The burner, outer spiral cylinder, inner direct current cylinder, and corrugated fire tubes are on the same horizontal plane, and the output end of the burner is aligned with the axis of the outer spiral cylinder, inner direct current cylinder, and corrugated fire tubes. The inner direct current cylinder is located inside the outer spiral cylinder. After the flame airflow output from the burner's output end passes through the outer spiral cylinder and the inner direct current cylinder, it flows in a composite manner of outer spiral and inner direct current, thereby ensuring the stability of the flame airflow output.

[0010] Furthermore, the airflow equalization component also includes a separation shell. When the flame airflow output by the burner comes into contact with the side wall of the corrugated fire tube, it will be turned back in a symmetrical manner to form a return flame and gradually generate high-temperature flue gas. The high-temperature flue gas is balanced by the guide and limit of the separation shell to balance the flow difference caused by the rising characteristics of hot gas, thereby avoiding the problem of more flue gas at the top and less at the bottom, until the flue gas flows into the inside of the chimney pipe and is discharged from the flue pipe position.

[0011] Furthermore, the outer spiral cylinder is sleeved on the outer wall of the burner output shaft end, and a curved track is fixedly connected to the inner wall of the outer spiral cylinder. The curved track is spiral in shape, and a swirl element is installed inside the output end of the outer spiral cylinder.

[0012] Furthermore, the swirling element is composed of several inclined fan-shaped blades and connecting rings, and the outer spiral cylinder and the inner DC cylinder are movably connected through the swirling element.

[0013] Furthermore, the inner DC cylinder is located at the axial position inside the outer spiral cylinder, and guide vanes are uniformly fixedly connected to the inner sidewall of the inner DC cylinder. The guide vanes are all isosceles triangles, and the tips of the guide vanes are close to each other.

[0014] Furthermore, an assembly bracket is movably connected to the outer wall of the outer spiral cylinder, and a separation shell is fixedly connected to the end of the assembly bracket away from the outer spiral cylinder. The separation shell is located in the interval area formed between the burner and the corrugated fire tube inside the boiler drum.

[0015] Furthermore, the separation shell is generally funnel-shaped, with the narrow end of the separation shell close to the corrugated fire tube and the wide end close to the burner. The outer wall of the separation shell is uniformly and fixedly connected with an isolation layer, and the isolation layer is located between every two adjacent chimney pipes.

[0016] Furthermore, a filling base is installed in the interval area between the corrugated fire tube and the chimney pipe, and the filling base covers the side of the chimney pipe near the corrugated fire tube in a semi-circular shape.

[0017] Furthermore, a heat-conducting shaft is slidably connected inside the filling base. The heat-conducting shaft is made of boron nitride material, and the heat-conducting shaft is tangentially fitted to the corrugated fire tube and the chimney pipe, respectively.

[0018] Furthermore, the interior of the filling base is uniformly perforated with through grooves, and each through groove is fixedly connected with an elastic support pad. The elastic support pad is curved in shape, with the crest of the elastic support pad fitting against the outer wall of the chimney pipe and the trough of the elastic support pad fitting against the outer wall of the filling base.

[0019] Furthermore, spherical protrusions are uniformly fixedly connected to the outer wall of the chimney pipe on the side away from the corrugated fire tube, and the spherical protrusions are made of high-temperature resistant alloy material.

[0020] Compared with the prior art, the beneficial effects of the present invention are: (1) Based on the application of oil extraction and processing scenarios, the device introduces an airflow equalization component, which enables the flame airflow output by the burner to flow into the corrugated fire tube in a composite manner of external spiral and internal straight flow, thereby realizing dual control of flame combustion. First, the inner layer direct flow structure combs the flame into a stable columnar flow through the guide plate, avoiding flame divergence caused by turbulence; while the outer layer spiral flow gives the flame rotation characteristics through the curved track and swirl component, making the fuel and air mix more fully. The combination of the two can ensure the stability of the flame core temperature and enhance the combustion intensity of the edge area by utilizing the outer layer rotating airflow, thereby improving the overall combustion efficiency and reducing fuel waste. In wellhead heating, oil pipeline insulation and other links that require stable heat supply, the device can provide continuous and stable heat energy with less fuel consumption, reduce energy costs, and meet the requirements of energy conservation and emission reduction in the petroleum industry.

[0021] The "outer spiral, inner straight" composite flow pattern causes the flame to spiral and wrap around the straight flow when entering the corrugated fire tube, changing the traditional single-axial flow path of the flame. The outer spiral flame diffuses towards the inner wall of the fire tube under the action of centrifugal force, forming a spiral heat transfer trajectory. Compared with the traditional straight flow, this significantly increases the contact area between the flame and the inner wall of the fire tube. This increased contact area allows the flame heat to be transferred to the fire tube more fully, and the stable and efficient heat production capacity can ensure that the temperature at the wellhead and oil pipeline is maintained within a suitable range, preventing the oil from solidifying due to excessively low temperature and ensuring the continuity of production.

[0022] During the flame and gas flow process, the gas film formed by the external spiral flow acts as a protective layer, resisting external airflow disturbances, such as pressure fluctuations or lateral airflow impacts during boiler start-up and shutdown. The internal direct flow structure maintains the rigidity and stability of the flame core, ensuring that the flame propagation direction is fixed. The inner and outer layers work together, with the outer spiral flow buffering external interference and the inner direct flow providing a stable core, jointly ensuring that the flame maintains a stable shape when entering the corrugated fire tube, avoiding unstable phenomena such as flame deviation and flameout, and improving the reliability of boiler operation.

[0023] (2) In actual use, such as oil extraction in cold winter regions, the funnel-shaped separation shell constructs a physical isolation barrier between the flame and the flue gas, separating the output high-temperature flame path from the subsequent low-temperature flue gas flow path. In this way, the direct collision between the flame and the exhaust gas is effectively avoided, preventing turbulence and eddies caused by the convergence of hot and cold airflows, and avoiding flame shape distortion or flue gas backflow. Compared with the traditional open structure, the separation shell ensures that the flame airflow maintains a stable external swirling and internal straight flow mode in the corrugated fire tube, while preventing the exhaust gas from interfering with the combustion process, thereby ensuring the continuous and stable operation of the boiler and providing reliable thermal energy support for oil extraction.

[0024] Meanwhile, the curved surface and gradually expanding structure of the separation shell form a natural flow channel. On the one hand, when the flue gas turns on the curved surface, the velocity distribution is automatically homogenized due to centrifugal force and the widening of the channel, reducing local high-speed or low-speed areas. On the other hand, the design of the wide end close to the inner wall of the boiler drum automatically compensates for the air intake of the bottom chimney, balancing the flow difference caused by the rising hot gas. This design can control the air intake deviation of each chimney to a very small range, avoiding the problem of uneven flue gas exhaust with "more at the top and less at the bottom" in traditional layouts. In the process of oil extraction and processing, improving heat utilization means being able to use energy more efficiently, reduce production costs, and reduce the environmental impact of energy consumption, which is in line with the concept of sustainable development in the oil industry.

[0025] (3) Among them, the heat-conducting shaft made of boron nitride material can quickly capture the heat emitted by the corrugated fire tube and efficiently transfer it to the chimney pipe due to its excellent thermal conductivity. The semi-circular filling base is designed to fit the tangent of the fire tube and the chimney, maximizing the contact area and reducing the thermal resistance of heat transfer, so that the heat transfer is more complete. By preheating the chimney pipe in advance, the heat exchange temperature difference when the high-temperature flue gas flows through is reduced, heat loss is reduced, and the heat that might otherwise be wasted is effectively utilized.

[0026] The elastic support fits snugly against the outer wall of the chimney pipe. When the chimney pipe vibrates slightly due to the flow of flue gas, the elastic support deforms accordingly. The minute force generated by this deformation effectively shakes off dust, ash, and other impurities adhering to the inner wall of the chimney pipe. This prevents problems such as a reduction in the inner diameter of the chimney pipe and an increase in exhaust resistance caused by the long-term accumulation of impurities. In oil extraction and processing sites, the environment is usually harsh, with a lot of dust and impurities. This self-cleaning function of the device reduces the workload and cost of equipment maintenance, ensures smooth exhaust of flue gas, and improves the reliability and stability of the equipment.

[0027] Adding high-temperature resistant alloy spherical protrusions to the outer wall of the chimney pipe can enhance heat exchange efficiency by increasing the heat exchange area with the cold water inside the boiler drum, transferring more waste heat from the flue gas to the cold water, and improving the overall thermal utilization rate of the boiler. At the same time, the protruding structure can disturb the water flow and break the boundary layer, making the cold water temperature distribution more uniform, reducing thermal stress concentration, and lowering the risk of chimney overheating. Attached Figure Description

[0028] Figure 1 This is a front-view stereoscopic structural diagram of the present invention.

[0029] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the boiler drum of the present invention.

[0030] Figure 3 This is a schematic diagram showing the positional relationship between the outer spiral cylinder and the burner in this invention.

[0031] Figure 4This is a schematic diagram of the flame airflow inside the corrugated fire tube of the present invention.

[0032] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the outer spiral cylinder and the inner DC cylinder of the present invention.

[0033] Figure 6 This is a top plan view of the outer spiral cylinder and other components of the present invention.

[0034] Figure 7 This is a schematic diagram of the flue gas flow inside the chimney pipe of the present invention.

[0035] Figure 8 This is a schematic diagram showing the positional relationship between the flue gas duct and the corrugated fire tube of the present invention.

[0036] Figure 9 This is a schematic diagram of the three-dimensional structure of the filling base of the present invention.

[0037] Figure 10 This is a side view of the three-dimensional structure of the filling base and other components of the present invention.

[0038] The following are the labels in the diagram: 1. Boiler drum; 11. Burner; 12. Corrugated fire tube; 13. Chimney pipe; 14. Flue pipe; 2. Airflow equalization assembly; 21. Outer spiral cylinder; 22. Curved track; 23. Swirl component; 24. Inner straight cylinder; 25. Guide vane; 26. Assembly bracket; 27. Separation shell; 28. Isolation layer; 29. ​​Filling base; 210. Heat-conducting shaft; 211. Through groove; 212. Elastic support; 213. Spherical protrusion. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that the structure and working principle of the above-mentioned boiler drum 1, burner 11, corrugated fire tube 12, flue pipe 13, flue pipe 14 and other components are existing technologies and will not be described in detail here.

[0041] Example 1: Please refer to Figures 1-10As shown, an integrated circulating hot water boiler includes a boiler drum 1, a burner 11 installed on the side of the boiler drum 1, a corrugated fire tube 12 installed inside the boiler drum 1, flue pipes 13 evenly installed outside the corrugated fire tubes 12, a flue pipe 14 installed on the upper side of the boiler drum 1, and an airflow equalization component 2 provided between the burner 11 and the corrugated fire tubes 12. The airflow equalization component 2 includes an outer spiral cylinder 21 and an inner direct current cylinder 24. The burner 11, the outer spiral cylinder 21, the inner direct current cylinder 24, and the corrugated fire tubes 12 are on the same horizontal plane, and the output end of the burner 11 is aligned with the axis of the outer spiral cylinder 21, the inner direct current cylinder 24, and the corrugated fire tubes 12. The inner direct current cylinder 24 is located inside the outer spiral cylinder 21. After the flame airflow output from the output end of the burner 11 passes through the outer spiral cylinder 21 and the inner direct current cylinder 24, it will flow in a composite manner of outer spiral and inner direct current, thereby ensuring the stability of the flame airflow output.

[0042] Please refer to Figures 1-10 As shown, the outer spiral cylinder 21 is sleeved on the outer wall of the output shaft end of the burner 11. The inner wall of the outer spiral cylinder 21 is fixedly connected to a curved track 22, which is spiral in shape. A swirling element 23 is installed inside the output end of the outer spiral cylinder 21. The swirling element 23 is composed of several inclined fan-shaped blades and connecting rings. The outer spiral cylinder 21 and the inner DC cylinder 24 are movably connected through the swirling element 23. The inner DC cylinder 24 is located at the axial position inside the outer spiral cylinder 21. Guide vanes 25 are evenly fixedly connected to the inner side wall of the inner DC cylinder 24. The guide vanes 25 are all isosceles triangles, and the tips of the guide vanes 25 are close to each other.

[0043] Specifically, when the flame airflow output from the burner 11 enters the interior of the outer spiral cylinder 21, the spiral curved track 22 fixed on its inner wall will first guide the airflow. When the airflow moves along the spiral curved surface of the curved track 22, it is subject to the combined action of centrifugal force and the constraint of the wall of the outer spiral cylinder 21, and gradually acquires a tangential velocity component, forming a spiral flow trend. When the airflow reaches the output end of the outer spiral cylinder 21, the swirling element 23 installed inside further enhances the spiral effect through several inclined fan-shaped blades. The inclination angle between each two adjacent fan-shaped blades causes the airflow to generate a rotational torque, and finally forms a stable spiral flow pattern. At this time, the flame airflow in the outer spiral cylinder 21 diffuses outward in a spiral manner.

[0044] At the same time, when the central airflow output from the burner 11 re-enters the inner DC cylinder 24, the isosceles triangular guide vanes 25 evenly distributed on its inner sidewall play a key role. The tips of the guide vanes 25 come together to form an axial channel, which sorts the turbulent central airflow into laminar flow along the axial direction. The smooth curved surface of the guide vanes 25 guides the airflow to maintain axial flow and avoids radial diffusion, thereby forming a stable DC core in the central region of the composite flow pattern.

[0045] The outer spiral tube 21 and the inner direct current tube 24 are arranged coaxially, so that the outer spiral airflow and the inner direct current core form a composite flow field of "outer layer wrapping inner layer" at the inlet of the corrugated fire tube 12: the outer spiral airflow pushes the flame toward the inner wall of the corrugated fire tube 12 through centrifugal force, extending the heat exchange path; the inner direct current core maintains the flame rigidity and avoids the overall shape from diverging. The two work together to make the flame airflow enter the corrugated fire tube 12 stably, reducing the turbulence caused by sudden changes in flow velocity or expansion of space.

[0046] Based on Example 1, please refer to Figures 1-10 As shown, the airflow equalization component 2 also includes a separation housing 27. When the flame airflow output by the burner 11 comes into contact with the side wall of the corrugated fire tube 12, it will be turned back in a symmetrical manner to form a return flame and gradually generate high-temperature flue gas. The high-temperature flue gas is balanced by the guide and limit of the separation housing 27 to balance the flow difference caused by the rising characteristics of hot gas, thereby avoiding the problem of more flue gas at the top and less at the bottom, until the flue gas flows into the inside of the chimney pipe 13 and is discharged from the position of the flue pipe 14.

[0047] It should be noted that an assembly bracket 26 is movably connected to the outer wall of the outer spiral cylinder 21. A separation shell 27 is fixedly connected to the end of the assembly bracket 26 away from the outer spiral cylinder 21. The separation shell 27 is located in the interval area formed between the burner 11 and the corrugated fire tube 12 inside the boiler drum 1. The separation shell 27 is funnel-shaped, with its narrow end close to the corrugated fire tube 12 and its wide end close to the burner 11. Isolation layers 28 are uniformly fixedly connected to the outer wall of the separation shell 27, and the isolation layers 28 are located between every two adjacent flue pipes 13. A filling base 29 is installed in the interval area between the corrugated fire tube 12 and the flue pipe 13. The filling base 29 covers the flue pipe 13 in a semi-circular shape near the corrugated fire tube 12. On one side of the tube 12, a heat-conducting shaft 210 is slidably connected inside the filling base 29. The heat-conducting shaft 210 is made of boron nitride and is tangentially fitted to the corrugated fire tube 12 and the chimney pipe 13. The filling base 29 has uniformly through-grooves 211, and elastic supports 212 are fixedly connected inside each groove 211. The elastic supports 212 are curved in shape. The crests of the elastic supports 212 are fitted to the outer wall of the chimney pipe 13, and the troughs of the elastic supports 212 are fitted to the outer wall of the filling base 29. Spherical protrusions 213 are uniformly fixedly connected to the outer wall of the chimney pipe 13 away from the corrugated fire tube 12. The spherical protrusions 213 are made of high-temperature resistant alloy.

[0048] Specifically, the flame generated by the burner 11 forms a stable composite flow pattern after passing through the outer spiral tube 21 and the inner direct current tube 24, and then enters the corrugated fire tube 12 for combustion, generating high-temperature flue gas. When the flue gas contacts the side wall of the corrugated fire tube 12 and is deflected, the funnel-shaped separation shell 27 begins to function: the wide end of the separation shell 27 near the burner 11 has a large area, while the narrow end near the corrugated fire tube 12 has a small area. As the flue gas flows in the gradually expanding channel, the flow velocity decreases, causing the flue gas to diffuse towards the bottom chimney pipe 13, compensating for insufficient bottom air intake caused by the rising hot gas. Furthermore, the separation shell 27 is located in the corrugated... The symmetrical structure at the center between the flame tube 12 and the burner 11 ensures that the flue gas is evenly distributed to the two chimney pipes 13 on both sides, avoiding local flow concentration. In addition, the isolation layer 28 separates the inlets of each chimney pipe 13, preventing uneven flow caused by the transverse flow of flue gas between adjacent chimney pipes 13. Furthermore, the arc-shaped surface of the separation shell 27 guides the flue gas into the corresponding chimney pipe 13 along a preset path, forcibly balancing the air intake of each chimney pipe 13, and ensuring that the flue gas flow deviation is within a controllable range.

[0049] Among them, the heat-conducting shaft 210 made of boron nitride is tangentially attached to the corrugated fire tube 12 and the chimney pipe 13, which quickly conducts the heat of the corrugated fire tube 12 to the chimney pipe 13. The semi-circular filling base 29 wraps around the chimney pipe 13, maximizing the contact area and reducing thermal resistance, so that the chimney pipe 13 is preheated. In addition, the bending structure of the elastic support 212 is attached to the outer wall of the chimney pipe 13. When the flow of flue gas causes the chimney pipe 13 to vibrate slightly, the elastic support 212 deforms accordingly and generates high-frequency micro-vibration. This vibration shakes off the dust and condensate attached to the inner wall of the chimney pipe 13, preventing dust accumulation, blockage and corrosion, and maintaining the smooth flow of the chimney.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated circulating hot water boiler comprising a boiler drum (1), a burner (11) is installed on the side of the boiler drum (1), a corrugated fire tube (12) is installed inside the boiler drum (1), a chimney pipe (13) is uniformly installed outside the corrugated fire tube (12), a flue pipe (14) is installed above the side of the boiler drum (1), characterized in that: The gas flow equalization assembly (2) is arranged between the burner (11) and the corrugated fire tube (12), the gas flow equalization assembly (2) comprises an outer spiral cylinder (21) and an inner straight cylinder (24), the burner (11), the outer spiral cylinder (21), the inner straight cylinder (24) and the corrugated fire tube (12) are located on the same horizontal plane, the output end of the burner (11) is aligned with the axis of the outer spiral cylinder (21), the inner straight cylinder (24) and the corrugated fire tube (12), the inner straight cylinder (24) is located inside the outer spiral cylinder (21), the flame gas flow output by the output end of the burner (11) is output through the inside of the outer spiral cylinder (21) and the inner straight cylinder (24), and then flows in a combined mode of outer spiral and inner straight; the gas flow equalization assembly (2) further comprises a separation shell (27), when the flame gas flow output by the burner (11) contacts the side wall of the corrugated fire tube (12), the flame gas flow is folded back in a symmetrical form, backfire is formed, high-temperature flue gas is gradually generated, the high-temperature flue gas balances the flow difference caused by the heat gas rising characteristic under the guidance and limitation of the separation shell (27), thereby avoiding the distribution problem that more flue gas flows upwards and less flue gas flows downwards, and the flue gas flows into the chimney pipe (13) and is discharged from the flue pipe (14).

2. An integrated cyclic hot water boiler according to claim 1, characterized in that: The outer spiral cylinder (21) is sleeved on the outer wall of the output shaft end of the burner (11), the inner wall of the outer spiral cylinder (21) is fixedly connected with a curved track (22), the curved track (22) has a spiral shape as a whole, and the inside of the output end of the outer spiral cylinder (21) is provided with a rotational flow piece (23).

3. An integrated cyclic hot water boiler according to claim 2, characterized in that: The rotational flow piece (23) is composed of a plurality of inclined fan-shaped pieces and connecting rings as a whole, and the outer spiral cylinder (21) and the inner straight cylinder (24) are movably connected through the rotational flow piece (23).

4. An integrated cyclic hot water boiler according to claim 1, characterized in that: The inner straight cylinder (24) is located at the axial position inside the outer spiral cylinder (21), the inner side wall of the inner straight cylinder (24) is uniformly fixedly connected with guide vanes (25), the guide vanes (25) are all isosceles triangles, and the tip positions of the guide vanes (25) are close to each other.

5. An integrated cyclic hot water boiler according to claim 1, characterized in that: The outer wall of the outer spiral cylinder (21) movably connects with an assembly support (26), one end of the assembly support (26) away from the outer spiral cylinder (21) is fixedly connected with the separation shell (27), and the separation shell (27) is located in the spacing region between the burner (11) and the corrugated fire tube (12) inside the boiler cylinder (1).

6. An integrated cyclic hot water boiler according to claim 1, characterized in that: The separation shell (27) has a funnel shape as a whole, one end of the separation shell (27) close to the corrugated fire tube (12) is narrow, and the other end close to the burner (11) is wide, the outer wall of the separation shell (27) is uniformly fixedly connected with an isolation layer (28), and the isolation layer (28) is located between every two adjacent chimney pipes (13).

7. An integrated cyclic hot water boiler according to claim 1, characterized in that: The spacing region between the corrugated fire tube (12) and the chimney pipe (13) is provided with a filling base (29), and the filling base (29) is covered on one side of the chimney pipe (13) close to the corrugated fire tube (12) in a semicircular form.

8. An integrated cyclic hot water boiler according to claim 7, characterized in that: The inside of the filling base (29) is slidably connected with a heat-conducting shaft (210) which is made of boron nitride material and is tangentially attached to the corrugated fire tube (12) and the chimney pipeline (13) respectively.

9. An integrated cyclic hot water boiler according to claim 7, characterized in that: The inside of the filling base (29) is uniformly provided with through grooves (211), and the inside of each through groove (211) is fixedly connected with an elastic supporting pad (212) which is in a curved shape, the crest of the elastic supporting pad (212) is attached to the outer wall of the chimney pipeline (13), and the trough of the elastic supporting pad (212) is attached to the outer wall of the filling base (29).

10. The integrated, hydronic hot water boiler of claim 1, wherein: The outer wall of the chimney pipeline (13) away from the corrugated fire tube (12) is uniformly fixedly connected with spherical protrusions (213) which are made of high-temperature-resistant alloy material.

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