A regenerative organic heat carrier boiler

Abstract

The present application relates to the field of organic heat carrier boiler, specifically to a regenerative organic heat carrier boiler, including a support bottom plate for bearing a boiler body and a heat storage chamber, the boiler body is used for providing heat exchange space, the heat storage chamber is used for storing and releasing heat energy, one end of the boiler body is fixedly connected with an end cover for closing the end of the boiler body, the inner wall of the end cover and located in the inside of the boiler body is fixedly connected with a fire barrel for guiding fuel combustion and transmitting high temperature flame and flue gas, the outer side wall of the fire barrel is fixedly connected with a first air guide plate for guiding high temperature flue gas, the inner wall of the boiler body is fixedly connected with a second air guide plate for guiding high temperature flue gas.The present application through the synergistic effect of double helix flow guide structure and sparse-dense-sparse pitch layout, both avoids the oil coke generation in high temperature area, and enhances the heat transfer in low temperature area, significantly improves the overall heat transfer coefficient and operation safety, so as to realize higher heat transfer efficiency under the same fuel consumption.

Description

Technical Field

[0001] This invention relates to the field of organic heat carrier boilers, specifically a regenerative organic heat carrier boiler. Background Technology

[0002] A regenerative organic heat carrier boiler is a special industrial boiler that uses gaseous or liquid fuel as energy and transfers heat energy to an organic heat carrier through regenerative high-temperature combustion technology. Its core technical feature is that it is equipped with a pair of regenerative combustion systems, which achieve the ultimate recovery of flue gas waste heat and high-temperature preheating of combustion air through periodic reversal. Patent CN223814798U discloses a regenerative organic heat carrier boiler. It uses through holes inside the heat storage plate to store heat layer by layer, which facilitates rapid heat exchange and improves heat storage efficiency, making it convenient to provide heat energy for later use. However, existing organic heat carrier boilers usually adopt a single-layer flue gas guide channel or equal pitch coil structure, which makes the heat transfer oil in the high-temperature zone prone to thermal cracking and coking due to local overheating, while the low-temperature zone has low heat exchange efficiency due to insufficient contact area and turbulence, making it difficult to improve the overall heat transfer efficiency. Therefore, a regenerative organic heat carrier boiler is proposed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a regenerative organic heat carrier boiler, which solves the technical problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A regenerative organic heat carrier boiler includes a supporting base plate for supporting the boiler body and a heat storage chamber. The boiler body provides space for heat exchange, and the heat storage chamber stores and releases heat energy. One end of the boiler body is fixedly connected to an end cap for sealing the end of the boiler body. The inner wall of the end cap, located inside the boiler body, is fixedly connected to a fire tube for guiding fuel combustion and transmitting high-temperature flames and flue gas. The outer wall of the fire tube is fixedly connected to a first air guide plate for guiding high-temperature flue gas. The inner wall of the boiler body is fixedly connected to a second air guide plate for guiding high-temperature flue gas. The inner end of the boiler body is fixedly connected to a baffle plate for blocking high-temperature flue gas, and the center of the inner wall of the baffle plate is fixedly connected to a gas distribution block for uniformly dispersing the high-temperature flue gas generated by combustion. The outer periphery of the fire tube is fitted with an oil conveying mechanism for inputting external cold oil into the boiler body to absorb heat and outputting the heated oil to the heat-using equipment. The boiler body is equipped with a support structure for supporting the oil conveying mechanism. The oil conveying mechanism includes a first oil conveying pipe, a second oil conveying pipe, and a third oil conveying pipe fitted around the outer periphery of the fire tube. The end of the first oil conveying pipe is fixedly connected to an oil inlet pipe that penetrates the boiler body. The end of the third oil conveying pipe is fixedly connected to an oil outlet pipe that penetrates the boiler body. The other end of the oil inlet pipe is fixedly connected to an oil supply interface for connecting to an external oil supply device. The other end of the oil outlet pipe is fixedly connected to an oil outlet interface for connecting to an external heat-using equipment.

[0005] As a further embodiment of the present invention, the first air guide plate is located between the oil conveying mechanism and the fire tube, the second air guide plate is located between the fire tube and the oil conveying mechanism, both the first air guide plate and the second air guide plate are spiral plate-shaped, and the gas distribution block is designed as a cone.

[0006] As a further embodiment of the present invention, the first oil pipeline, the second oil pipeline and the third oil pipeline are all designed as spiral pipes, and the first oil pipeline is fixedly connected to the second oil pipeline, and the second oil pipeline is fixedly connected to the third oil pipeline. The first oil pipeline and the third oil pipeline have the same pitch, and the pitch of the first oil pipeline and the third oil pipeline is greater than the pitch of the second oil pipeline.

[0007] As a further embodiment of the present invention, a combustion inlet pipe for conveying external fuel to the inside of the fire tube is fixedly connected to the outside of the end cap. One end of the combustion inlet pipe is connected to the inside of the fire tube, and the other end of the combustion inlet pipe is fixedly connected to a gas interface for connecting to an external gas supply device. One end of the heat storage chamber is fixedly connected to a heat exhaust pipe for discharging heat from the heat storage chamber. A gas transmission pipe for conveying high-temperature flue gas is fixedly connected between the boiler body and the top of the heat storage chamber.

[0008] As a further embodiment of the present invention, the bearing mechanism includes a top load plate and a bottom load plate for limiting the bearing capacity of the upper and lower sides of the oil conveying mechanism. A top connecting block is fixedly connected to both ends of the top of the top load plate, and the top connecting block is fixedly connected to the inner top of the boiler body. A bottom connecting block is fixedly connected to both ends of the bottom of the bottom of the bottom load plate, and the bottom connecting block is fixedly connected to the inner bottom of the boiler body. Two first connecting plates are symmetrically fixed between the ends of the top load plate and the bottom load plate. A fixing connecting block is fixedly connected to both ends of the bottom of the top load plate. A second connecting plate is fixedly connected to the bottom end of the fixing connecting block. A first side load plate for lateral bearing capacity of the oil conveying mechanism is fixedly connected to both ends of the second connecting plate. A third connecting plate is fixedly connected to both ends of the first side load plate, and a second side load plate for lateral bearing capacity of the oil conveying mechanism is fixedly connected between the bottom ends of the two third connecting plates.

[0009] As a further embodiment of the present invention, the cross-sectional shape of the first connecting plate, the second connecting plate and the third connecting plate is arc-shaped, and the two first side plates and the two second side plates are in contact with the inner side of the first oil pipeline, the second oil pipeline and the third oil pipeline.

[0010] As a further embodiment of the present invention, a first fixed support frame for fixing the boiler body is fixedly connected to the upper side of the supporting base plate, and a first movable support frame for bearing load is fixedly connected to the bottom of the boiler body away from the first fixed support frame. A second fixed support frame for fixing the heat storage chamber is also fixedly connected to the upper side of the supporting base plate, and a second movable support frame for bearing load is fixedly connected to the bottom of the heat storage chamber away from the second fixed support frame.

[0011] As a further embodiment of the present invention, a first opening for accommodating a first movable roller is provided through the center of the bottom of the first movable support frame. A first fixed shaft is fixedly connected inside the first opening, and the first movable roller is movably sleeved on the first fixed shaft. The first movable roller is used to assist the boiler body in thermal expansion displacement. A first sliding groove and a first limiting groove symmetrically distributed about the first sliding groove are provided on the upper surface of the support base plate. A first limiting block that slides with the first limiting groove is fixedly connected to both sides of the bottom of the first movable support frame. The first movable roller slides along the inside of the first sliding groove.

[0012] As a further embodiment of the present invention, a second opening for accommodating a second movable roller is provided through the center of the bottom of the second movable support frame. A second fixed shaft is fixedly connected inside the second opening, and the second movable roller is movably sleeved on the second fixed shaft. The second movable roller is used to assist the heat storage chamber in thermal expansion displacement. A second sliding groove and a second limiting groove symmetrically distributed about the second sliding groove are also provided on the upper surface of the support base plate. A second limiting block that slides with the second limiting groove is fixedly connected to both sides of the bottom of the second movable support frame. The second movable roller slides along the inside of the second sliding groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the fuel gas enters the fire tube through the combustion inlet pipe and burns violently, the resulting high-temperature flame and flue gas are ejected from the opening at the right end of the fire tube. Under the obstruction of the baffle plate and the uniform dispersion effect of the conical gas distribution block, the flue gas diffuses evenly in all directions and sequentially enters the double-helix channel formed by the first and second induced draft guide plates. The first induced draft guide plate is located inside the oil conveying mechanism, and the second induced draft guide plate is located outside the oil conveying mechanism. Both plates rotate in the same direction, causing the high-temperature flue gas to form two layers of spiral scouring flow along the inner and outer pipe walls of the oil conveying mechanism, respectively. During this spiral flow, the flue gas undergoes sufficient heat exchange with the heat transfer oil in the first, second, and third oil conveying pipes. During this process, the first and third oil conveying pipes are at the flue gas temperature... In the higher temperature region, the second oil pipe is located in the relatively lower flue gas temperature region. Therefore, the first and third oil pipes use a larger pitch, while the second oil pipe uses a smaller pitch, forming a sparse-dense-sparse pitch distribution structure. The large pitch section reduces the risk of thermal cracking and coking of the heat transfer oil due to local overheating, while the small pitch dense winding section significantly increases the contact area and turbulence between the flue gas and the pipe wall, enhancing the local heat transfer effect in the relatively low temperature region. Through the synergistic effect of the double helix flow guiding structure and the sparse-dense-sparse pitch layout, coking is avoided in the high temperature region and heat transfer is enhanced in the low temperature region, significantly improving the overall heat transfer coefficient and operational safety, thereby achieving higher heat transfer efficiency with the same fuel consumption.

[0014] 2. When the boiler body and the heat storage chamber operate under high-temperature conditions, both will undergo axial thermal expansion and elongation. At this time, the first movable support on the right side of the bottom of the boiler body rolls freely along the first sliding groove on the support base plate via the first movable roller inside it. At the same time, the first limiting block slides and guides within the first limiting groove, so that the boiler body can only move linearly along the axial direction, while the first fixed support on the left side remains fixed. Similarly, the second movable support on the right side of the bottom of the heat storage chamber rolls along the second sliding groove via the second movable roller and is limited and guided by the second limiting block and the second limiting groove, achieving independent and free axial expansion. Since the thermal expansion displacements of the boiler body and the heat storage chamber do not interfere with each other, and the coordinated design of the fixed support and the movable support ensures the overall stability of the equipment and effectively eliminates safety hazards such as shell deformation caused by thermal stress, the service life of the equipment under high-temperature long-term operation is greatly improved.

[0015] 3. The oil conveying mechanism consists of a first oil conveying pipe, a second oil conveying pipe, and a third oil conveying pipe connected in series. The three pipes are spiral tube structures and are fixedly connected to each other. The load-bearing mechanism limits and supports the upper and lower sides of the oil conveying mechanism through a top load plate and a bottom load plate. The top load plate and the bottom load plate are connected to form an integral frame through a first connecting plate. At the same time, the first side load plate and the second side load plate are attached to the inner side of the oil conveying pipe to constrain the radial displacement of the oil conveying pipe, thereby providing all-round support and limiting for the three spiral oil conveying pipes. When the high-temperature heat transfer oil flows at high speed in the pipe and the boiler vibrates due to heating, the load-bearing mechanism can effectively prevent the oil conveying pipe from deforming or shifting due to its own weight and fluid impact, ensuring the stability of the oil conveying mechanism in use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the boiler body in this invention; Figure 3 This is a schematic diagram of the connection structure of the oil delivery mechanism in this invention; Figure 4 This is a schematic diagram of the connection structure of the second air guide plate in this invention; Figure 5 This is a schematic diagram of the connection structure of the first air guide plate in this invention; Figure 6 This is a schematic diagram of the connection structure between the top plate and the bottom plate in this invention; Figure 7 This is a schematic diagram of the connection structure of the bearing mechanism in this invention; Figure 8 This is a schematic diagram of the connection structure between the boiler body and the heat storage chamber in this invention; Figure 9 This is a schematic diagram of the connection structure of the supporting base plate in this invention.

[0017] In the diagram: 1. Support base plate; 2. Boiler body; 3. Regenerator chamber; 4. End cover; 5. Fire tube; 6. First air guide plate; 7. Second air guide plate; 8. Bearing mechanism; 801. Top load plate; 802. Bottom load plate; 803. Top connecting block; 804. Bottom connecting block; 805. First connecting plate; 806. Fixed connecting block; 807. Second connecting plate; 808. First side load plate; 809. Third connecting plate; 810. Second side load plate; 9. Oil conveying mechanism; 901. First oil conveying pipe; 902. Second oil conveying pipe; 903. Third oil conveying pipe; 10. Oil inlet pipe ; 11. Oil outlet pipe; 12. Air baffle; 13. Gas distribution block; 14. Combustion inlet pipe; 15. Heat exhaust pipe; 16. Gas delivery pipe; 17. First fixed support; 18. First movable support; 19. First opening; 20. First fixed shaft; 21. First movable roller; 22. First limiting block; 23. First limiting groove; 24. First sliding groove; 25. Second fixed support; 26. Second movable support; 27. Second opening; 28. Second fixed shaft; 29. ​​Second movable roller; 30. Second limiting block; 31. Second limiting groove; 32. Second sliding groove. Detailed Implementation

[0018] 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.

[0019] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0020] For examples, please refer to Figures 1 to 9 This invention provides a regenerative organic heat carrier boiler, which generates high-temperature flue gas by burning gas inside the fire tube, and uses a double helical flow guiding structure to make the flue gas undergo two reverse helical scourings in the boiler body, so as to efficiently transfer heat to the heat transfer oil. At the same time, the waste heat of the flue gas is recovered and reused through the heat storage chamber.

[0021] like Figure 1 and Figure 9 As shown, the boiler includes a horizontally arranged support base plate 1, which is a steel platform used to support the entire weight of the boiler body 2 and the heat storage chamber 3.

[0022] The boiler body 2 is a horizontal cylindrical pressure vessel. Its left end is sealed by an end cover 4, and its right end is a closed structure. A first fixed support 17 is fixedly welded to the bottom left side of the boiler body 2. The bottom end of the first fixed support 17 is fastened to the upper surface of the support base plate 1 by a bolt group to form a fixed hinge point. A first movable support 18 is fixedly welded to the bottom right side of the boiler body 2.

[0023] like Figure 9 As shown, a first opening 19 is provided through the center of the bottom of the first movable support 18. A first fixed shaft 20 is horizontally fixed inside the first opening 19. The first movable roller 21 is rotatably sleeved on the outer wall of the first fixed shaft 20. A first sliding groove 24 is provided at a corresponding position on the upper surface of the support base plate 1. The first sliding groove 24 extends along the axial direction of the boiler body 2. The bottom roller surface of the first movable roller 21 falls into the first sliding groove 24 and can roll freely along it. First limiting blocks 22 are symmetrically fixed on both sides of the bottom of the first movable support 18. A first limiting groove 23 is provided on the upper surface of the support base plate 1, which slides with the first limiting block 22. The first limiting groove 23 is arranged parallel to the first sliding groove 24. The above structure ensures that when the boiler body 2 expands axially due to heat, it can only move linearly along the direction of the first sliding groove 24, preventing deflection.

[0024] The heat storage chamber 3 is a horizontal container filled with high-alumina honeycomb heat storage material. A second fixed support 25 is fixedly welded to the left side of its bottom. The bottom end of the second fixed support 25 is fixedly connected to the upper surface of the support base plate 1. A second movable support 26 is fixedly welded to the right side of the bottom of the heat storage chamber 3. A second opening 27 is opened through the center of the bottom of the second movable support 26. A second fixed shaft 28 is horizontally fixed inside the second opening 27. A second movable roller 29 is rotatably sleeved on the outer wall of the second fixed shaft 28. A second sliding groove 32 is opened at the corresponding position on the upper surface of the support base plate 1. The bottom roller surface of the second movable roller 29 falls into the second sliding groove 32 and can roll freely along it. A second limiting block 30 is symmetrically fixed to both sides of the bottom of the second movable support 26. A second limiting groove 31 is opened on the upper surface of the support base plate 1, which slides with the second limiting block 30. The second limiting groove 31 is parallel to the second sliding groove 32.

[0025] The independently installed movable support structure of the boiler body 2 and the heat storage chamber 3 allows both to achieve independent free thermal expansion under high temperature conditions, avoiding tearing of the shell welds or damage to the foundation due to thermal stress.

[0026] like Figure 1 and Figure 2As shown, a fire tube 5 is fixedly connected to the center of the inner wall of the end cap 4. The fire tube 5 is a straight-through heat-resistant steel cylinder that is horizontally suspended in the center of the boiler body 2. Its left end is fixedly connected to and sealed with the end cap 4, and its right end is open. A combustion inlet pipe 14 is fixedly inserted through the center of the outer side of the end cap 4. One end of the combustion inlet pipe 14 is connected to the inside of the fire tube 5, and the other end of the combustion inlet pipe 14 is fixedly connected to a gas interface for connecting to an external gas supply device. External gas and combustion air enter the inside of the fire tube 5 through the combustion inlet pipe 14 for intense combustion, producing high-temperature flames and flue gas.

[0027] A first air guide plate 6 is fixedly welded to the outer wall of the fire tube 5. This first air guide plate 6 is spiral-shaped and extends from the right end of the fire tube 5 to the left end. A second air guide plate 7 is fixedly welded to the inner wall of the boiler body 2. This second air guide plate 7 is also spiral-shaped and extends from the right end of the boiler body 2 to the left end. The first air guide plate 6 and the second air guide plate 7 rotate in the same direction, forming a double-helix structure. Figure 4 and Figure 5 As shown, the first air guide plate 6 is located inside the oil conveying mechanism 9, and the second air guide plate 7 is located outside the oil conveying mechanism 9.

[0028] A 15mm-25mm annular gap is left between the outer edge of the first air guide plate 6 and the inner wall of the oil conveying mechanism 9, serving as an inner flue gas passage. A 15mm-25mm annular gap is left between the inner edge of the second air guide plate 7 and the outermost wall of the oil conveying mechanism 9, serving as an outer flue gas passage.

[0029] A baffle plate 12 is fixedly installed on the inner wall of the right end of the boiler body 2. The baffle plate 12 has a bowl-shaped concave structure, and its concave surface opens towards the right end of the fire tube 5. A gas distribution block 13 is fixedly connected to the center of the inner wall of the baffle plate 12. The gas distribution block 13 is designed as a cone, and its tip opens towards the right end of the fire tube 5.

[0030] like Figure 2 and Figure 3 As shown, an oil delivery mechanism 9 is fitted around the fire tube 5. The oil delivery mechanism 9 consists of three spiral tubes, namely the first oil delivery pipe 901, the second oil delivery pipe 902, and the third oil delivery pipe 903. The first oil delivery pipe 901, the second oil delivery pipe 902, and the third oil delivery pipe 903 are all spiral tubes formed by cold bending of seamless heat-resistant steel pipes. The first oil delivery pipe 901 is fixedly connected to the second oil delivery pipe 902, and the second oil delivery pipe 902 is fixedly connected to the third oil delivery pipe 903. The three are connected in series to form a complete continuous flow channel.

[0031] The first oil pipe 901 and the third oil pipe 903 have the same pitch, both designed with a relatively large pitch (200mm-250mm). The second oil pipe 902 has a relatively small pitch (80mm-120mm).

[0032] The end of the first oil pipe 901 passes through the boiler body 2 and is fixedly connected to the oil inlet pipe 10. The other end of the oil inlet pipe 10 is fixedly connected to the oil supply interface for connecting to external oil supply equipment. The end of the third oil pipe 903 passes through the boiler body 2 and is fixedly connected to the oil outlet pipe 11. The other end of the oil outlet pipe 11 is fixedly connected to the oil outlet interface for connecting to external heat-using equipment.

[0033] like Figure 6 and Figure 7 As shown, the boiler body 2 is equipped with a bearing mechanism 8 for supporting and limiting the oil conveying mechanism 9. The bearing mechanism 8 includes a top bearing plate 801 and a bottom bearing plate 802. The top bearing plate 801 is an arc-shaped steel plate, the curvature of which matches the curvature of the inner wall of the boiler body 2. Top connecting blocks 803 are fixedly connected to both ends of the top of the top bearing plate 801. The top end of the top connecting block 803 is fixedly connected to the inner top of the boiler body 2. The bottom bearing plate 802 is an arc-shaped steel plate, the curvature of which matches the curvature of the inner wall of the boiler body 2. Bottom connecting blocks 804 are fixedly connected to both ends of the bottom of the bottom of the bottom bearing plate 802. The bottom end of the bottom connecting block 804 is fixedly connected to the inner bottom of the boiler body 2.

[0034] The top plate 801 and the bottom plate 802 are fixedly connected by four first connecting plates 805. The four first connecting plates 805 are located at both ends of the top plate 801 and the bottom plate 802, and the cross-sectional shape of the first connecting plates 805 is arc-shaped.

[0035] Fixed connecting blocks 806 are fixedly connected to both ends of the bottom of the top load plate 801. A second connecting plate 807 is fixedly connected to the bottom end of the fixed connecting block 806. A first side load plate 808 is fixedly connected to both ends of the second connecting plate 807. The two first side load plates 808 are symmetrically arranged. A third connecting plate 809 is fixedly connected to both ends of the first side load plate 808. A second side load plate 810 is fixedly connected between the bottom ends of the two third connecting plates 809. The cross-sectional shape of the first connecting plate 805, the second connecting plate 807 and the third connecting plate 809 is arc-shaped. The first side load plate 808, the second side load plate 810, the top load plate 801 and the bottom load plate 802 are all in contact with the oil delivery mechanism 9.

[0036] like Figure 8 As shown, a gas supply pipe 16 is fixedly connected between the top left end of the boiler body 2 and the top left end of the heat storage chamber 3. One end of the gas supply pipe 16 is connected to the interior of the boiler body 2, and the other end is connected to the interior of the heat storage chamber 3. A heat exhaust pipe 15 is fixedly connected to the right end of the heat storage chamber 3. One end of the heat exhaust pipe 15 is connected to the interior of the heat storage chamber 3, and the other end is used to connect to external equipment that requires heat.

[0037] Working Principle: During operation, external combustion gas and combustion air enter the interior of the fire tube 5 through the combustion inlet pipe 14. They burn intensely inside the fire tube 5, generating high-temperature flames and flue gas. The flames and flue gas are ejected at high speed from the opening at the right end of the fire tube 5, directly impacting the baffle plate 12 fixed to the inner end of the boiler body 2. The baffle plate 12 has a bowl-shaped concave structure, which blocks the high-temperature flue gas and changes its flow direction. Simultaneously, the conical gas distribution block 13 fixed to the center of the inner wall of the baffle plate 12 uses its tip to evenly guide and disperse the flue gas in all directions, preventing it from concentrating in the central area and instead allowing it to diffuse radially and evenly into the annular space inside the boiler body 2. Subsequently, the flue gas, along with the first air guide plate 6 fixed to the outer wall of the fire tube 5 and the second air guide plate 7 fixed to the inner wall of the boiler body 2, forms a... The gas flows in a double helical channel. The first air guide plate 6 and the second air guide plate 7 have the same direction of rotation and are both helical ribbons. The first air guide plate 6 is located between the oil conveying mechanism 9 and the fire tube 5, and the second air guide plate 7 is located between the fire tube 5 and the oil conveying mechanism 9. In this way, the high-temperature flue gas forms two layers of helical scouring flow along the inner and outer pipe walls of the oil conveying mechanism 9. During the spiral advance, the flue gas has sufficient contact and heat exchange with the heat transfer oil in the oil conveying mechanism 9. The oil conveying mechanism 9 is composed of a first oil conveying pipe 901, a second oil conveying pipe 902 and a third oil conveying pipe 903 connected in series around the fire tube 5. The first oil conveying pipe 901 and the third oil conveying pipe 903 have the same pitch and a large pitch, while the second oil conveying pipe 902 has a smaller pitch. As the flue gas flows along the spiral channel, the first oil delivery pipe 901 and the third oil delivery pipe 903 are located in areas with higher flue gas temperatures. The large-pitch design allows the heat transfer oil to flow at relatively high speeds and have short residence times in the high-temperature zone, effectively preventing thermal cracking and coking caused by local overheating. Meanwhile, the second oil delivery pipe 902 is located in an area with relatively lower flue gas temperatures. The small-pitch, tightly wound structure significantly increases the contact area between the pipe wall and the flue gas in this section and enhances turbulence, thereby strengthening the local heat exchange effect in the low-temperature zone. Finally, the cold oil enters the first oil delivery pipe 901 from the inlet pipe 10, flows sequentially through the second oil delivery pipe 902 and the third oil delivery pipe 903, absorbs sufficient heat, and is then output from the outlet pipe 11 to the heat-using equipment, completing efficient heat transfer. Throughout the heat exchange process, the supporting mechanism 8 provides comprehensive support and restraint for the oil delivery mechanism 9. The top plate 801 is fixedly connected to the boiler body 2 via the top connecting block 803. The bottom plate 802 is fixedly connected to the bottom of the boiler body 2 by the bottom connecting block 804. The top plate 801 and the bottom plate 802 are fixedly connected to form an integral frame by the first connecting plate 805 with an arc cross section. The bottom two ends of the top plate 801 are fixedly connected to the second connecting plate 807 by the fixing connecting block 806. The two ends of the second connecting plate 807 are fixedly connected to the first side plate 808. The two ends of the first side plate 808 are fixedly connected to the second side plate 810 by the third connecting plate 809. The first side plate 808 and the second side plate 810 are both attached to the inner side of the first oil pipe 901, the second oil pipe 902 and the third oil pipe 903, thereby forming a rigid constraint on the vertical and radial displacement of the spiral oil pipe, effectively preventing the oil pipe from deforming or shifting due to high temperature and self-weight and the impact of high-speed fluid in the pipe, and ensuring the stability and reliability of the oil conveying mechanism 9 in long-term operation. Meanwhile, both the boiler body 2 and the heat storage chamber 3 will undergo axial thermal expansion and elongation under high-temperature conditions. The first fixed support 17, fixedly attached to the upper side of the support base plate 1, is fixedly supported on the left side of the bottom of the boiler body 2. The first movable support 18, fixedly attached to the right side of the bottom of the boiler body 2, is movably connected to the first movable roller 21 through the first fixed shaft 20 inside it. The first movable roller 21 rolls freely along the first sliding groove 24 opened on the upper surface of the support base plate 1. At the same time, the first limiting blocks 22 fixed on both sides of the bottom of the first movable support 18 slide and engage with the first limiting groove 23, so that the boiler body 2 can only move in a straight line along the axial direction without tilting. The second fixed support 25, fixedly attached to the left side of the bottom of the heat storage chamber 3, is fixed to the support base plate 1. The second movable support 25, fixedly attached to the right side of the bottom of the heat storage chamber 3, is fixed to the support base plate 1. The support frame 26 is movably connected to the second movable roller 29 via the second fixed shaft 28. The second movable roller 29 rolls freely along the second sliding groove 32. The second limiting block 30 slides and guides the second limiting groove 31, allowing the heat storage chamber 3 to expand freely along the axial direction independently. The boiler body 2 and the heat storage chamber 3 are connected by the gas transmission pipe 16 at the top. After heat exchange, the flue gas enters the heat storage chamber 3 through the gas transmission pipe 16 for waste heat storage and is output to external heat-using equipment through the heat exhaust pipe 15. The independent thermal expansion displacement of the boiler body 2 and the heat storage chamber 3 does not interfere with each other. The coordinated design of the fixed end and the moving end not only ensures the stability of the overall structure but also eliminates the hidden danger of shell deformation caused by thermal stress accumulation, thereby ensuring the service life of the equipment under high temperature and long-term operation.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A regenerative organic heat carrier boiler, comprising a supporting base plate (1) for supporting the boiler body (2) and the regenerative chamber (3), characterized in that: The boiler body (2) is used to provide space for heat exchange, the heat storage chamber (3) is used to store and release heat energy, one end of the boiler body (2) is fixedly connected to an end cap (4) for sealing the end of the boiler body, the inner wall of the end cap (4) and inside the boiler body (2) is fixedly connected to a fire tube (5) for guiding fuel combustion and transmitting high-temperature flames and flue gas, the outer wall of the fire tube (5) is fixedly connected to a first air guide plate (6) for guiding high-temperature flue gas, the inner wall of the boiler body (2) is fixedly connected to a second air guide plate (7) for guiding high-temperature flue gas, the inner end of the boiler body (2) is fixedly connected to a baffle plate (12) for blocking high-temperature flue gas, and the center of the inner wall of the baffle plate (12) is fixedly connected to a gas distribution block (13) for uniformly dispersing the high-temperature flue gas generated by combustion. The fire tube (5) is surrounded by an oil conveying mechanism (9) for inputting cold oil from the outside into the boiler body (2) to absorb heat and outputting the heated oil to the heat-using equipment. The boiler body (2) is provided with a support mechanism (8) for supporting the oil conveying mechanism (9). The oil conveying mechanism (9) includes a first oil conveying pipe (901), a second oil conveying pipe (902) and a third oil conveying pipe (903) surrounded by the fire tube (5). The end of the first oil conveying pipe (901) is fixedly connected to an oil inlet pipe (10) that penetrates the boiler body (2). The end of the third oil conveying pipe (903) is fixedly connected to an oil outlet pipe (11) that penetrates the boiler body (2). The other end of the oil inlet pipe (10) is fixedly connected to an oil supply interface for connecting to an external oil supply equipment. The other end of the oil outlet pipe (11) is fixedly connected to an oil outlet interface for connecting to an external heat-using equipment.

2. The regenerative organic heat carrier boiler according to claim 1, characterized in that: The first air guide plate (6) is located between the oil delivery mechanism (9) and the fire tube (5), and the second air guide plate (7) is located between the fire tube (5) and the oil delivery mechanism (9). Both the first air guide plate (6) and the second air guide plate (7) are spiral plate-shaped, and the gas distribution block (13) is designed as a cone.

3. A regenerative organic heat carrier boiler according to claim 1, characterized in that: The first oil pipe (901), the second oil pipe (902) and the third oil pipe (903) are all designed as spiral pipes. The first oil pipe (901) is fixedly connected to the second oil pipe (902), and the second oil pipe (902) is fixedly connected to the third oil pipe (903). The first oil pipe (901) and the third oil pipe (903) have the same pitch, and the pitch of the first oil pipe (901) and the third oil pipe (903) is greater than the pitch of the second oil pipe (902).

4. A regenerative organic heat carrier boiler according to claim 1, characterized in that: The end cap (4) is fixedly connected to a combustion inlet pipe (14) for conveying external fuel to the inside of the fire tube (5). One end of the combustion inlet pipe (14) is connected to the inside of the fire tube (5), and the other end of the combustion inlet pipe (14) is fixedly connected to a gas interface for connecting to an external gas supply device. One end of the heat storage chamber (3) is fixedly connected to a heat exhaust pipe (15) for discharging heat from the heat storage chamber (3). A gas transmission pipe (16) for conveying high-temperature flue gas is fixedly connected between the boiler body (2) and the top of the heat storage chamber (3).

5. A regenerative organic heat carrier boiler according to claim 1, characterized in that: The bearing mechanism (8) includes a top plate (801) and a bottom plate (802) for limiting the load on the upper and lower sides of the oil conveying mechanism (9). The top two ends of the top plate (801) are fixedly connected to top connecting blocks (803), and the top connecting blocks (803) are fixedly connected to the inner top of the boiler body (2). The bottom two ends of the bottom plate (802) are fixedly connected to bottom connecting blocks (804), and the bottom connecting blocks (804) are fixedly connected to the inner bottom of the boiler body (2). Two first connections are symmetrically fixed between the ends of the top plate (801) and the bottom plate (802). The top plate (805) has fixed connecting blocks (806) at both ends of its bottom. The bottom end of the fixed connecting block (806) is fixed with a second connecting plate (807). The two ends of the second connecting plate (807) are fixed with a first side plate (808) for lateral bearing of the oil conveying mechanism (9). The two ends of the first side plate (808) are fixed with a third connecting plate (809). The bottom ends of the two third connecting plates (809) are fixed with a second side plate (810) for lateral bearing of the oil conveying mechanism (9).

6. A regenerative organic heat carrier boiler according to claim 5, characterized in that: The cross-sectional shape of the first connecting plate (805), the second connecting plate (807) and the third connecting plate (809) is arc-shaped. The two first side plates (808) and the two second side plates (810) are in contact with the inner side of the first oil pipeline (901), the second oil pipeline (902) and the third oil pipeline (903).

7. A regenerative organic heat carrier boiler according to claim 1, characterized in that: The upper side of the support base plate (1) is fixedly connected to a first fixed support frame (17) for fixing the boiler body (2), and the bottom of the boiler body (2) is fixedly connected to a first movable support frame (18) for bearing load at a distance away from the first fixed support frame (17). The upper side of the support base plate (1) is also fixedly connected to a second fixed support frame (25) for fixing the heat storage chamber (3), and the bottom of the heat storage chamber (3) is fixedly connected to a second movable support frame (26) for bearing load at a distance away from the second fixed support frame (25).

8. A regenerative organic heat carrier boiler according to claim 7, characterized in that: The bottom center of the first movable support (18) is provided with a first opening (19) for accommodating the first movable roller (21). The first fixed shaft (20) is fixedly connected inside the first opening (19), and the first movable roller (21) is movably sleeved on the first fixed shaft (20). The first movable roller (21) is used to assist the boiler body (2) in thermal expansion displacement. The upper surface of the support base plate (1) is provided with a first sliding groove (24) and a first limiting groove (23) symmetrically distributed about the first sliding groove (24). The bottom sides of the first movable support (18) are fixedly connected with first limiting blocks (22) that slide in cooperation with the first limiting groove (23). The first movable roller (21) slides along the inside of the first sliding groove (24).

9. A regenerative organic heat carrier boiler according to claim 7, characterized in that: The bottom center of the second movable support (26) is provided with a second opening (27) for accommodating the second movable roller (29). The second fixed shaft (28) is fixedly connected inside the second opening (27), and the second movable roller (29) is movably sleeved on the second fixed shaft (28). The second movable roller (29) is used to assist the heat storage chamber (3) in thermal expansion displacement. The upper surface of the support base plate (1) is also provided with a second sliding groove (32) and a second limiting groove (31) symmetrically distributed about the second sliding groove (32). The bottom sides of the second movable support (26) are both fixed with second limiting blocks (30) that slide in cooperation with the second limiting groove (31). The second movable roller (29) slides along the inside of the second sliding groove (32).

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