A heating device for a heating system

Abstract

The present invention belongs to the technical field of heating devices, and discloses a heating device for a heating system, including a furnace body and a medium circulation buffer cavity, and also including a heating module, which is arranged inside the furnace body for conveying circulating medium, a heating module, which is arranged on the furnace body and extends to the inner side of the heating module for heating the medium in the heating module, and a conveying module, which is arranged on the furnace body for connecting the medium circulation buffer cavity and the medium in the heating module; the present invention forms a honeycomb heating module through various splicing units, which are distributed and arranged therein, and heat radiation rays are uniformly emitted outward through medium combustion, so that the periphery of the honeycomb heating module can be uniformly heated, thereby improving the heat absorption capacity. The arrangement and design of the heat radiation itself evenly disperse the heat radiation, so the present application directional constrains the heat radiation direction in the combustion form of the flame and the arrangement of the heat radiation tube, and improves the utilization efficiency of the heat radiation.

Description

Technical Field

[0001] The invention belongs to the technical field of heating devices, and in particular is a heating device used in a heating system. Background Art

[0002] At present, the domestic heating system is mainly based on solar hot water heat pumps, natural gas boiler heating and geothermal heating. In some areas in the north, a circulating heating system based on households or buildings is mainly used, which uses natural gas as energy. The heating device used is mainly boiler heating. This energy replacement of gas instead of coal greatly reduces pollution to the environment and effectively improves the efficiency of heat supply.

[0003] Among them, when the boiler is working, the flame burning in the furnace will generate a large amount of heat radiation to the surroundings. This heat radiation will be absorbed by the heating pipes arranged on the water-cooled wall. The medium mainly composed of water or steam passes through the heating pipes, thereby directly or indirectly heating the water. However, when the fire is in the process of free burning, its flame is relatively unstable. Especially under the impact of the combustion-supporting airflow, the heat radiation will be relatively uneven, and only part of the heating pipes will be heated unevenly, thereby affecting the absorption efficiency of thermal energy, resulting in a negative impact on the overall thermal conversion efficiency of the boiler. Therefore, the traditional setting of thermal radiation tubes and the arrangement of heating pipes have certain limitations.

[0004] The present application proposes a heating device for a heating system to overcome the above-mentioned defects. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a heating device for a heating system.

[0006] To achieve the above object, the present invention provides the following technical solution: a heating device for a heating system, comprising a furnace body and a medium circulation buffer cavity, and also comprising a heating module, which is arranged inside the furnace body and is used to transport the circulating medium.

[0007] The heating module is arranged on the furnace body and extends to the inner side of the heating module to heat the medium in the heating module.

[0008] A conveying module, which is arranged on the furnace body and is used to connect the medium circulation buffer cavity with the medium in the heating module;

[0009] The heating module is composed of a plurality of splicing units whose edges are connected to each other to form a honeycomb structure. The splicing unit includes an assembly frame and a heating pipe installed on its edge. The heating pipe is connected to the conveying module. The medium combustion heat radiation pipe extends to the inner side of the assembly frame and the two are coaxial.

[0010] The inner wall of the furnace body is a water-cooled wall.

[0011] Preferably, the conveying module comprises a main shunt pipe installed inside the furnace body, the main shunt pipe is connected with the medium circulation buffer chamber through a connecting pipe, and the conveying module further comprises a unit shunt pipe installed on the assembly frame, the unit shunt pipe is connected with the main shunt pipe;

[0012] Each unit flow-dividing pipe is correspondingly installed at the end of an assembly frame, and two adjacent vertically aligned unit flow-dividing pipes are connected.

[0013] Preferably, the medium combustion heat radiation tube is U-shaped, and its two ends extend into two adjacent assembly frames respectively;

[0014] The heating module also includes a shunt pipe arranged outside the furnace body, the shunt pipe is connected to each medium combustion heat radiation pipe respectively, and a solenoid valve is arranged at the connection between the medium combustion heat radiation pipe and the shunt pipe;

[0015] Preferably, the surface of the portion of the medium combustion heat radiation tube extending into the assembly frame is periodically provided with circular holes or polygonal holes;

[0016] The circular hole or polygonal hole can be opened as a countersunk hole or a through hole;

[0017] The total area of ​​the circular holes or polygonal holes opened on the medium combustion heat radiation tube accounts for at least % of the surface area of ​​the vertical portion of the medium combustion heat radiation tube.

[0018] Preferably, the splicing unit is in the shape of a circular column or a polygonal column, and two adjacent splicing units are fixedly connected to form a honeycomb structure;

[0019] Partition walls are respectively arranged at both ends of the furnace body for erecting the spliced ​​honeycomb structure so that it is suspended inside the furnace body;

[0020] The extending direction of the heated pipe is parallel to the axial direction of the assembly rack, and the positions of the heated pipes arranged on adjacent sides of two adjacent assembly racks are staggered.

[0021] Preferably, the splicing unit is in the shape of a hexagonal prism.

[0022] Preferably, a partition is provided inside the medium circulation buffer chamber, and the partition divides the inner cavity of the medium circulation buffer chamber into a medium cavity and a preheating cavity, and a preheating component extending upward to the inside of the medium cavity is provided in the preheating cavity;

[0023] The medium cavity is communicated with the conveying module.

[0024] Preferably, the preheating component is a heat conducting tube 1, a hollow cavity is provided inside the heat conducting tube 1, the top end of the hollow cavity is connected with the medium cavity, and the bottom end of the hollow cavity is in a closed state.

[0025] Preferably, the preheating assembly is a plurality of evenly arranged heat-conducting pipes 2, wherein the heat-conducting pipes 2 are hollow cylindrical pipes that penetrate the medium cavity upward and extend to the outside of the furnace body, and slots are periodically formed on the surface of the heat-conducting pipes 2.

[0026] Preferably, the total area of ​​the slots is at least 30% of the area of ​​the second outer circumference of the heat pipe.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention forms a honeycomb heating module through various splicing units, which are distributed and arranged therein, and emits heat radiation rays uniformly outward through medium combustion, so that the periphery of the honeycomb heating module can be evenly heated, thereby improving the heat absorption capacity. The arrangement and design thereof evenly distribute the heat radiation, so the present invention directionally constrains the heat radiation direction in the combustion form of the flame and the arrangement of the heat radiation tube, thereby improving the utilization efficiency of the heat radiation.

[0029] By setting a heating component in the flue gas, the flue gas can be reused for preheating the coal. The heat convection efficiency of the medium can be improved by bubbling. The preheating effect can be enhanced. The two implementation forms can be appropriately converted and adjusted according to specific needs. A comprehensive improvement in cost and heating efficiency can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 It is a schematic cross-sectional view of the furnace of the present invention;

[0032] Figure 3 It is a schematic side view of the interior of the furnace of the present invention;

[0033] Figure 4 It is a schematic diagram of the arrangement of the heating module of the present invention;

[0034] Figure 5 It is a side view of the configuration of the splicing unit of the present invention;

[0035] Figure 6 It is a schematic diagram of the configuration of a single splicing unit of the present invention;

[0036] Figure 7 It is a schematic diagram of a first embodiment of a medium circulation buffer chamber of the present invention;

[0037] Figure 8It is a schematic diagram of a second embodiment of the medium circulation buffer chamber of the present invention;

[0038] Fig. 9 It is a schematic structural diagram of the heat conducting pipe 2 of the present invention.

[0039] In the figure: 100, furnace body; 101, flue gas channel; 102, partition wall; 200, heating module; 201, medium combustion heat radiation tube; 300, heating module; 301, assembly frame; 302, heating tube; 400, conveying module; 401, main diversion pipe; 402, connecting pipe; 403, unit diversion pipe; 500, medium circulation buffer cavity; 501, partition; 502, heat conduction pipe 1; 503, heat conduction pipe 2; 5031, slot. DETAILED DESCRIPTION

[0040] 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.

[0041] like Figure 1-Figure 4 As shown, the present invention provides a heating device for a heating system, including a furnace body 100 and a medium circulation buffer cavity 500, and also includes a heating module 300, which is arranged inside the furnace body 100 for conveying circulating medium, a heating module 200, which is arranged on the furnace body 100 and extends to the inner side of the heating module 300 for heating the medium in the heating module 300, and a conveying module 400, which is arranged on the furnace body 100 for connecting the medium in the medium circulation buffer cavity 500 and the heating module 200; wherein, the heating module 300 is composed of a plurality of splicing unit edges connected to each other to form a honeycomb structure, the splicing unit includes an assembly frame 301 and a heating pipe 302 installed on its edge, the heating pipe 302 is connected to the conveying module 400, and the medium combustion heat radiation pipe 201 extends to the inner side of the assembly frame 301 and the two are coaxial; the inner wall of the furnace body 100 is a water-cooled wall.

[0042] Each of the two splicing units is provided with a medium combustion heat radiation tube 201 for heat radiation to the heat receiving tube 302 in a single splicing unit. The heat receiving tubes 302 in adjacent splicing units and other splicing units are used to receive the overflowing heat radiation from other units. For a single heat receiving tube 302, it can receive heat radiation in all directions, so compared with the heat receiving tubes traditionally arranged on the furnace wall, the utilization efficiency of heat radiation is higher and the heating rate is faster. The water-cooled wall is used to dredge hot steam, and the steam therein is heated by the overflowing heat radiation in the entire heating module 300. Since the arrangement of the medium combustion heat radiation tube 201 is not only located in the middle of the furnace, but is dispersed, the steam or other media in the water-cooled wall can also receive better heat radiation heating. The flue gas channel 101 arranged on the furnace body 100 introduces the high-temperature flue gas into the medium circulation buffer chamber 500, in which a stop valve is provided to control the flow of the flue gas.

[0043] like Figure 2-Figure 4 As shown, the conveying module 400 includes a main shunt pipe 401 installed inside the furnace body 100, the main shunt pipe 401 is connected to the medium circulation buffer chamber 500 through a connecting pipe 402, and the conveying module 400 also includes a unit shunt pipe 403 installed on the assembly frame 301, and the unit shunt pipe 403 is connected to the main shunt pipe 401;

[0044] Each unit flow-dividing pipe 403 is installed at the end of a corresponding assembly frame 301 , and two adjacent vertically aligned unit flow-dividing pipes 403 are connected.

[0045] The conveying module 400 is used to connect the medium in the heated pipe 302 and the medium circulation buffer chamber 500, and has a conveying effect. A group of conveying modules 400 is also installed at the bottom of the other end of the furnace body 100, which is used to guide the medium in the heated pipe 302 out and enter the circulation system. The configuration of the unit diverter pipe 403 is related to the shape of the assembly rack 301 used and the arrangement form of the heated pipe 302. As shown in the figure, the configuration of the assembly rack 301 is hexagonal, so the unit diverter pipe 403 is a hexagonal configuration adapted thereto. When the assembly rack 301 is circular, it can also be circular.

[0046] like Figure 4 As shown, the medium combustion heat radiation tube 201 is U-shaped, and its two ends extend into two adjacent assembly frames 301 respectively;

[0047] The heating module 200 also includes a shunt pipe arranged outside the furnace body 100, the shunt pipe is connected to each medium combustion heat radiation pipe 201, and a solenoid valve is arranged at the connection between the medium combustion heat radiation pipe 201 and the shunt pipe;

[0048] The fuel gas is injected into the medium combustion heat radiation tube 201 for combustion through the uniform diversion of the diversion tube. The medium combustion heat radiation tube 201 extending to the assembly frame 301 may also be covered with a main tube to limit the leakage of fuel gas such as fuel gas.

[0049] like Figure 4 As shown, the portion of the medium combustion heat radiation tube 201 extending into the assembly frame 301 has circular holes or polygonal holes periodically opened on its surface; the circular holes or polygonal holes can be opened as countersunk holes or through holes; the total area of ​​the circular holes or polygonal holes opened on the medium combustion heat radiation tube 201 accounts for at least 40% of the surface area of ​​the vertical portion of the medium combustion heat radiation tube 201.

[0050] The central axis of the medium combustion heat radiation tube 201 coincides with the central axis of the flame in the furnace, and its actual length is determined by the actual length of the furnace flame. It is at least greater than the flame length and occupies at least one-third of the furnace length. The surface is periodically opened with holes so that the internal burning flame can evenly and directedly generate heat radiation transfer outward. As a result, the flame burning in the furnace is converted from a free combustion state to a combustion state constrained by the medium combustion heat radiation tube 201, which can effectively ensure the stability of outward heat radiation. The heated tubes arranged on the periphery of the heat radiation tube are evenly heated. The medium holes arranged thereon are mainly small, numerous, and dense, so that the medium holes generate stronger heat radiation outward than a simple gas phase medium.

[0051] like Figure 5 As shown, the splicing unit is in the shape of a circular column or a polygonal column, and two adjacent splicing units are fixedly connected to form a honeycomb structure;

[0052] Partition walls 102 are provided at both ends of the furnace body 100 for erecting the assembled honeycomb structure so that it is suspended inside the furnace body 100; the extension direction of the heat receiving pipe 302 is parallel to the axial direction of the assembly frame 301, and the positions of the heat receiving pipes 302 arranged on the adjacent sides of two adjacent assembly frames 301 are staggered.

[0053] The specific configuration of the splicing unit can be determined with reference to specific design requirements and usage environment, and is not strictly limited in this embodiment. Various configurations can achieve a good heat radiation distribution effect. As for the partition walls 102 on both sides, they can be made of asbestos boards or refractory bricks. Flexible stacking is performed according to the final forming form of the splicing unit, so that the heating module 300 is erected at both ends, which can achieve a good flame isolation effect. The heat receiving tubes 302 on two adjacent splicing units are appropriately staggered to avoid the area where the heat radiation of the heat radiation tubes in the adjacent splicing units is shielded by other heat receiving tubes 302. In this way, the heat receiving tubes 302 can receive a more comprehensive heat radiation effect, increasing the area exposed to its heat radiation.

[0054] like Figure 3-Figure 5 As shown, the splicing unit is preferably in the shape of a hexagonal prism.

[0055] The hexagonal prism can effectively improve the space utilization rate and facilitate the direct connection of two splicing units. The connection effect is very stable.

[0056] like Figure 7 and Figure 8 As shown, a partition 501 is provided inside the medium circulation buffer chamber 500, and the partition 501 divides the inner cavity of the medium circulation buffer chamber 500 into a medium cavity and a preheating cavity. A preheating component extending upward to the inside of the medium cavity is provided in the preheating cavity; the medium cavity is connected to the conveying module 400.

[0057] The inner cavity of the medium circulation buffer cavity 500 is separated into two cavities, upper and lower, by the partition 501. The upper cavity is used to contain the medium, and the lower cavity is used to dredge the high-temperature flue gas. The partition 501 is a heat-saturating plate with good heat conduction efficiency. The high-temperature flue gas passing below can heat the medium in the upper cavity for preheating.

[0058] like Figure 7 As shown, the preheating component is a heat conducting tube 502, and a hollow cavity is provided inside the heat conducting tube 502. The top end of the hollow cavity is connected to the medium cavity, and the bottom end of the hollow cavity is in a closed state.

[0059] This is the first implementation of the preheating component of the present application. The heat pipe 1 502, which is open at the top and closed at the bottom, is inserted through the partition 501 and extends into the smoke channel. The high-temperature smoke passes through the heat pipe 1 502 array to heat the heat pipe 1 502. The water in the heat pipe 1 502 is quickly heated and evaporates to generate bubbles, which disturbs the water in the medium circulation buffer chamber 500 and produces a better convective heat exchange effect. The smoke is discharged through the smoke exhaust port set on the medium circulation buffer chamber 500.

[0060] like Figure 8 and Fig. 9 As shown, the preheating assembly is a plurality of evenly arranged heat conducting pipes 503 , which are hollow cylindrical pipes that extend upward through the medium cavity to the outside of the furnace body 100 , and slots 5031 are periodically formed on the surface of the heat conducting pipe 503 .

[0061] This is the second embodiment of the preheating component in the present application, which is arranged in the inner cavity of the medium circulation buffer cavity 500 through the heat pipe 2 503, and the upper and lower ends respectively penetrate to the upper part of the medium circulation buffer cavity 500 and the lower part of the partition 501. The flue gas enters the inner cavity of the heat pipe 2 503 from the lower end of the heat pipe 2 503, heating the heat pipe 2 503. The water body in the slot 5031 outside the heat pipe 2 503 will evaporate quickly due to the fast heating rate, forming bubbles overflowing the slot 5031, disturbing the water body and improving the heat exchange efficiency. Due to the change in the pressure in the slot 5031, new water is immediately filled to the original position and evaporated again by heat, and the cycle is repeated. In addition, the medium circulation buffer cavity 500 can also be connected to the steam pipe in the water-cooled wall on the furnace body 100 through a pipeline, which is used to discharge the steam in the medium circulation buffer cavity 500 to the steam pipe of the water-cooled wall when the air pressure is high. The pipeline is provided with a one-way valve to prevent backflow. On the one hand, the medium circulation buffer chamber 500 can be effectively depressurized, and on the other hand, the steam therein can be recycled to improve the utilization efficiency.

[0062] like Fig. 9 As shown, the total area of ​​the slots 5031 is at least 30% of the outer peripheral area of ​​the second heat pipe 503 .

[0063] By increasing the opening area of ​​the above-mentioned slots 5031 on the heat pipe 2 503, the heat conversion efficiency can be effectively improved. The number of steam bubbles generated on the heat pipe 2 503 is significantly increased, the convection effect in the water is improved, and the heat exchange effect is improved. At the same time, after the flue gas is discharged from the heat pipe 2 503, its temperature will also be significantly reduced, reducing the heat energy loss. In addition, since the flue gas circulates in the heat pipe 2 503 and the heat energy it carries is gradually reduced from bottom to top, the heating effect on the water body located at the upper end of the outer side of the heat pipe 2 503 is relatively poor. Therefore, a large number of slots 5031 can be mainly opened below the middle of the surface of the heat pipe 2 503, and the opening density of the slots 5031 located above the middle is reduced. Therefore, the large number of bubbles generated below can be used to effectively disturb the water body and convective heat exchange.

[0064] The working principle and use process of the present invention:

[0065] The medium combustion heat radiation tube is arranged in a single splicing unit, and the heat radiation rays uniformly emitted outward by the heat radiation tube in the single splicing unit can evenly act on the heat receiving tube in the splicing unit. The heat receiving tube in the adjacent splicing unit can receive the overflow heat radiation from the heat radiation tube in another adjacent splicing unit. Therefore, the periphery of the single heat receiving tube can receive the heat radiation more comprehensively to improve the heat absorption efficiency. And the honeycomb splicing structure in the present application is adopted, and its diversified connection methods make its overall configuration in the furnace changeable, and it has strong adaptability to different environments and strong universality. It is also easy to splice and dismantle.

[0066] 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.

[0067] 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 heating device for a heating system, comprising a furnace body (100) and a medium circulation buffer chamber (500), characterized in that: Also includes, The heating module (300) is arranged inside the furnace body (100) and is used to transport the circulating medium. The heating module (200) is arranged on the furnace body (100) and extends to the inside of the heating module (300) for heating the medium in the heating module (300). A conveying module (400) is arranged on the furnace body (100) and is used to connect the medium in the medium circulation buffer cavity (500) and the medium in the heating module (200); The heating module (300) is composed of a plurality of splicing units whose edges are connected to each other to form a honeycomb structure, the splicing unit comprises an assembly frame (301) and a heating pipe (302) installed on its edge, and the heating pipe (302) is connected to the conveying module (400); The heating module (200) comprises a medium combustion heat radiation tube (201) installed in the furnace body (100), the medium combustion heat radiation tube (201) extending to the inner side of the assembly frame (301) and the two are coaxial; The inner wall of the furnace body (100) is a water-cooled wall; A partition (501) is provided inside the medium circulation buffer chamber (500), and the partition (501) divides the inner cavity of the medium circulation buffer chamber (500) into a medium cavity and a preheating cavity, and a preheating component extending upwards into the interior of the medium cavity is provided in the preheating cavity; The medium cavity is in communication with the conveying module (400); and a smoke channel (101) provided on the furnace body (100) guides the high-temperature smoke into the medium circulation buffer cavity (500).

2. A heating device for a heating system according to claim 1, characterized in that: The conveying module (400) comprises a main flow shunt pipe (401) installed inside the furnace body (100), the main flow shunt pipe (401) being connected to the medium circulation buffer chamber (500) via a connecting pipe (402), and the conveying module (400) further comprises a unit flow shunt pipe (403) installed on the assembly frame (301), the unit flow shunt pipe (403) being connected to the main flow shunt pipe (401); Each unit flow diversion pipe (403) is respectively installed at the end of a corresponding assembly frame (301), and two adjacent vertically aligned unit flow diversion pipes (403) are connected.

3. A heating device for a heating system according to claim 2, characterized in that: The medium combustion heat radiation tube (201) is U-shaped, and its two ends extend into two adjacent assembly racks (301) respectively; The heating module (200) further comprises a shunt pipe arranged outside the furnace body (100), the shunt pipe being connected to each medium combustion heat radiation pipe (201) respectively, and a solenoid valve being arranged at the connection between the medium combustion heat radiation pipe (201) and the shunt pipe.

4. A heating device for a heating system according to claim 3, characterized in that: The portion of the medium combustion heat radiation tube (201) extending into the assembly frame (301) has circular holes or polygonal holes periodically formed on its surface; The circular hole or polygonal hole can be opened as a countersunk hole or a through hole; The total area of ​​the circular holes or polygonal holes opened on the medium combustion heat radiation tube (201) accounts for at least 40% of the surface area of ​​the vertical portion of the medium combustion heat radiation tube (201).

5. The heating device for a heating system according to claim 1, characterized in that: The splicing units are in the shape of round columns or polygonal columns, and two adjacent splicing units are fixedly connected to form a honeycomb structure; Partition walls (102) are respectively provided at both ends of the furnace body (100) for erecting the spliced ​​honeycomb structure so that it is suspended inside the furnace body (100); The extending direction of the heat receiving pipe (302) is parallel to the axial direction of the assembly rack (301), and the positions of the heat receiving pipes (302) arranged on adjacent sides of two adjacent assembly racks (301) are staggered.

6. A heating device for a heating system according to claim 5, characterized in that: The splicing unit is in the shape of a hexagonal prism.

7. A heating device for a heating system according to claim 6, characterized in that: The preheating component is a heat conducting pipe 1 (502), a hollow cavity is provided inside the heat conducting pipe 1 (502), the top end of the hollow cavity is connected with the medium cavity, and the bottom end of the hollow cavity is in a closed state.

8. A heating device for a heating system according to claim 7, characterized in that: The preheating assembly is a plurality of evenly arranged heat-conducting pipes 2 (503), wherein the heat-conducting pipes 2 (503) are hollow cylindrical pipes that penetrate the medium cavity upward and extend to the outside of the furnace body (100), and slots (5031) are periodically provided on the surface of the heat-conducting pipes 2 (503).

9. A heating device for a heating system according to claim 8, characterized in that: The total area of ​​the slots (5031) is at least 30% of the outer peripheral area of ​​the second heat conduction pipe (503).

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