Combined hub rotary heat exchange device

Abstract

The invention discloses a combined hub rotary heat exchange device, which belongs to the field of heat exchangers and comprises a core section outer frame with a bottom frame, a core section end face sealing plate is arranged on the core section outer frame, an external bearing is arranged in an inner cavity of a square frame, a plurality of spokes are symmetrically arranged on a hub, the ends of the spokes are fixedly connected through spoke blocks, and the spokes are fixedly connected with the bottom frame. A core body is arranged between the spokes and the spoke blocks, an outer wrapping ring is arranged outside the circumference of the core body and connected with the spoke blocks and the spokes, and a sealing assembly is arranged between the square frame and the outer wrapping ring. Different driving assemblies are arranged on the inner surface and the outer surface of the core section outer frame according to the high-temperature inlet air temperature range. According to the combined hub rotary type heat exchange device, the metal heat exchange pieces of the core body continuously and alternately make contact with cold and hot fluid, compared with a traditional static heat exchanger, the effective heat exchange area utilization rate in unit time is increased, and the heat transfer efficiency is greatly improved; and different driving assemblies are arranged, so that the device can adapt to wide high-temperature waste gas waste heat recovery application.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a combined hub rotary heat exchange device. Background Art

[0002] General industrial sectors other than power plant flue gas and air conditioning exhaust often produce large amounts of high-temperature waste gas or flue gas, ranging from 50°C to 1100°C, which causes huge energy waste, accompanied by huge carbon emissions, and seriously increases energy consumption costs.

[0003] Among various solutions for waste gas or flue gas waste heat recovery, the solution that directly adopts gas-to-gas heat exchange has the least number of heat conversions, the highest heat exchange efficiency, and the best energy-saving and economical solution.

[0004] Common atmospheric-pressure air-to-air heat exchangers on the market include tubular heat exchangers, plate heat exchangers, heat pipe heat exchangers, intermediate medium heat exchangers, and rotary heat exchangers. Compared to other types of heat exchangers, rotary heat exchangers are more suitable for high-volume industrial waste gas or flue gas due to their heat exchange principle, offering higher heat exchange efficiency, lower heat transfer resistance, easier cleaning, and convenient heat transfer efficiency adjustment. Many industrial waste gas waste heat recovery applications are particularly well-suited for rotary heat exchangers, such as waste heat recovery from setting machines in the textile printing and dyeing industry, waste heat recovery from decorative paper impregnation machines, waste heat recovery from flue gas from ceramic roller kilns, waste heat recovery from coating machines, energy-saving flue gas desulfurization and denitrification, and energy-saving whitening. These applications require frequent or ongoing cleaning, minimize equipment operating resistance, or require adjustment of heat transfer efficiency during operation. Heat exchangers based on other principles cannot achieve long-term, efficient, and reliable operation.

[0005] However, the existing rotary heat exchanger has serious deficiencies in principle: the existing technology focuses on the extension of two application technologies, one is the rotary flue gas heat exchanger for power plants, and the other is the heat recovery wheel for air conditioning exhaust. However, these two technologies are not suitable for recovering waste heat from general industrial waste gas at 50℃~1100℃.

[0006] For example, the characteristic of flue gas in power plants is that the air volume is huge, often far exceeding 1 million Nm3 / h. The equipment structure principle of its rotary heat exchanger is not very suitable for general industrial application needs with an air volume of less than 200,000 Nm3 / h. In the process of extending the technology of rotary flue gas heat exchangers for power plants (or rotary air preheaters for power plants) to general industrial scenarios, its structure is too bulky, and the rotary heat exchangers for power plants generally adopt a horizontal core arrangement structure. The inevitable "mushroom-shaped deformation" often causes leakage that far exceeds the upper limit acceptable for general industrial application scenarios.

[0007] Heat recovery rotors for air conditioning exhaust systems operate at a maximum temperature of no more than 50°C, and their structures rarely need to account for thermal expansion and contraction, nor for high-temperature structural issues. Therefore, the heat exchange cores of these rotors often utilize a single spoke or simple support structure. These are susceptible to deformation during rotation in industrial environments due to centrifugal force and flue gas pressure. In particular, as exhaust gas temperatures rise, the strength of the metal material decreases, exacerbating core vibrations and causing deformation or even disintegration. Furthermore, the internal structure of heat recovery rotors for air conditioning systems fails to consider the fatigue strength issues associated with long-term high-temperature operation. Consider that even for ceramic kiln flue gas waste heat recovery at 600°C, operating at low speeds and heavy loads with impact and unbalanced loads, hundreds of millions of hot and cold cycles, and a lifespan of 100,000 hours for industrial equipment, the high-temperature structural strength requirements for the rotary heat exchanger drive shaft are far higher than those for the first spindle of a fighter jet turbofan engine. Relying solely on higher-grade high-temperature alloys would drive the material cost of the rotary heat exchanger beyond the reach of industrial applications. This necessitates a completely new heat exchanger structure. More importantly, the air conditioning system itself does not have high reliability requirements for fresh air energy-saving operation. Therefore, the reliability design of the internal structure of the heat recovery rotor used in air conditioning is completely unable to meet the reliability requirements of continuous operation 24 hours a day, 330 days a year or more in typical industrial scenarios. Coupled with the frequent blockage and corrosion in industrial environments, if the rotary heat exchanger used as an auxiliary machine fails, the losses to the main industrial process will far exceed the energy savings benefits. In past projects, even a minor rotary heat exchanger failure often forced users to dismantle the entire energy-saving system to ensure the main process continues.

[0008] For these reasons, over the past two decades, various efforts to apply the technologies of power plant rotary heat exchangers and air conditioning exhaust heat recovery wheels to general industrial applications have mostly resulted in frequent rotary heat exchanger failures, frequently affecting the operation of the main process, causing great distress to both equipment manufacturers and users.

[0009] As a result, despite a long-standing strong demand for rotary heat exchangers in the industrial energy-saving market for waste gas heat recovery projects in the 50°C to 1100°C range, very few projects have been successfully implemented and have achieved long-term reliable operation. Most have experienced serious reliability issues, with many projects even being dismantled by their owners within six months of operation. The fundamental reason lies in the fact that the underlying technical principles of the rotary heat exchangers typically used for industrial waste gas / flue gas heat recovery cannot continue to rely on existing heat recovery rotors used in air conditioning exhaust or power plant rotary flue gas heat exchangers. Instead, a completely new structural principle system is required. Summary of the Invention

[0010] The purpose of the present invention is to address the shortcomings of existing rotary heat exchanger structures that cannot meet the requirements of general industrial waste heat recovery applications of high-temperature exhaust gas or flue gas at 50°C to 1100°C. The present invention provides a structural principle of an industrial waste heat recovery rotary heat exchanger to ensure long-term stable and reliable operation under high-temperature exhaust gas or flue gas at 50°C to 1100°C.

[0011] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a combined hub rotary heat exchange device is divided into a high-temperature resistant core structure and a high-temperature resistant drive structure, and the high-temperature resistant core structure includes the following structural components; The wheel hub comprises a core segment outer frame with a base frame, a square frame is symmetrically arranged in the middle of the core segment outer frame, a core segment end face sealing plate is arranged on the core segment outer frame, and the core segment end face sealing plate and the square frame abut against each other to form a seal, an external bearing is arranged in the inner cavity of the square frame, and the inner cavity of the external bearing is rotatably connected to the hub through the core shaft, and a plurality of spokes are symmetrically arranged on the hub, and the ends of the spokes are fixedly connected by spoke blocks, a core is arranged between the spokes and the spoke blocks, and an outer ring is arranged outside the circumference of the core body and connected to the spoke blocks and the spokes; A sealing assembly is provided between the square frame and the outer ring; The inner and outer surfaces of the core segment outer frame are divided into 50℃~300℃, 100℃~600℃, and 300℃~1100℃ according to the high-temperature air inlet temperature range, and are correspondingly provided with a first drive assembly, a second drive assembly, and a third drive assembly.

[0012] As a further description of the above technical solution: one side of the core segment outer frame is provided with a hot air inlet cavity and a hot air outlet cavity that cooperate with each other and are connected with the core segment end face sealing plate, and the other side of the core segment outer frame is provided with a cold air inlet cavity and a cold air outlet cavity that cooperate with each other and are connected with the core segment end face sealing plate.

[0013] As a further description of the above technical solution: the sealing assembly includes a circumferential seal arranged along the circumference of the core between the outer ring and the end face sealing plate of the core segment, and a radial seal arranged along the radial direction of the core, followed by a hub seal arranged on the surface of the core and the spoke to form a separate wind channel.

[0014] The high temperature resistant drive structures are respectively composed of the first drive assembly, the second drive assembly and the third drive group, and the structures are as follows: As a further description of the above technical solution: the first driving component includes a gear block and a first reduction motor support fixedly installed at the corner of the inner cavity of the outer frame of the core segment, and the surface of the first reduction motor support is provided with a first reduction motor, the output end of the first reduction motor passes through the surface of the first reduction motor support and is provided with a first driving wheel, and the extended end of the first reduction motor support is rotatably connected to a tensioning wheel for adjusting the tensioning force, a first chain is movably arranged between the first driving wheel, the tensioning wheel and the gear block, and the gear block is fixedly installed on the spoke block.

[0015] The frame and the first drive assembly described above are suitable for use in a high-temperature air inlet temperature range of 50°C to 300°C.

[0016] As a further description of the above technical solution: the second drive assembly includes a first outer ring clamp, a first external bearing heat insulation plate, and a second reduction motor support and a first bearing support seat fixedly mounted on the base frame, a transmission shaft is rotatably sleeved in the first bearing support seat, a second reduction motor is arranged on the surface of the second reduction motor support, and the output end of the second reduction motor passes through the surface of the second reduction motor support and is provided with a second driving wheel, a first driven wheel is provided at one end of the transmission shaft, and a plurality of second chains are arranged between the first driven wheel and the second driving wheel.

[0017] As a further description of the above technical solution: the other end of the transmission shaft is installed in the wheel hub, the first outer ring clamp is wrapped and installed on the outer ring, and the first external bearing heat insulation plate is located on the side of the external bearing close to the core body.

[0018] When the high-temperature air inlet temperature range is 100°C to 600°C, the second drive assembly is used in combination with the above-mentioned frame, and the external bearing needs to be set externally.

[0019] As a further description of the above technical solution: the third drive assembly includes a third reduction motor support and a second bearing support seat fixedly mounted on the base frame, as well as a second outer ring clamp, a second bearing support seat, a combined wheel hub, a hollow transmission shaft and a second external bearing heat insulation plate. The surface of the third reduction motor support is provided with a third reduction motor, and the output end of the third reduction motor passes through the surface of the third reduction motor support and is provided with a third driving wheel, and one end of the hollow transmission shaft is provided with a second driven wheel, and a plurality of third chains are provided between the third driving wheel and the second driven wheel.

[0020] As a further description of the above technical solution: the combined hub is used to replace the hub and is connected to the spokes. The second external bearing heat insulation plate is located on the side of the external bearing close to the core body. The other end of the hollow drive shaft is installed in the combined hub, and the hollow drive shaft and the external bearing are respectively provided with a drive shaft cooling pipe and a bearing cooling pipe that can pass cooling medium. The combined hub is composed of several hubs.

[0021] When the high-temperature air inlet temperature range is 300°C ~ 1100°C, the third drive assembly is used in combination with the above-mentioned frame, and the outboard bearing needs to be externally set, and the wheel hub needs to be replaced with a combined wheel hub.

[0022] As a further description of the above technical solution: the core is composed of a plurality of metal heat exchange fins, and the plurality of metal heat exchange fins are formed into a honeycomb disc structure by winding, stacking, or assembling.

[0023] As a further description of the above technical solution: an axial hole is provided in the middle of the inner cavity of the combined hub for connecting the hollow transmission shaft.

[0024] As a further description of the above technical solution: the high temperature refers to the exhaust gas or flue gas temperature being greater than 50°C.

[0025] As a further description of the above technical solution: There is overlap between the temperature range divisions of the high-temperature resistant core structure and the high-temperature resistant drive structure, which means that within the overlapping temperature range, several structures involved may be adopted. In addition to the temperature resistance range, the specific selection also needs to consider the air volume, application scenario characteristics, etc.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The three different drive components designed can be used at different temperatures, which means they can be used in different industries. They can meet the general industrial waste heat recovery applications of high-temperature exhaust gas or flue gas at 50℃ to 1100℃, ensuring long-term stable and reliable operation under high-temperature exhaust gas or flue gas at 50℃ to 1100℃. 2. Circumferential seals, radial seals, and hub seals improve the sealing of the heat exchanger, avoiding the problem of "mushroom-shaped deformation" similar to that of rotary heat exchangers used in power plants. Seal wear or thermal deformation increases fluid leakage, especially when there is a large temperature difference between hot and cold fluids. This prevents the thermal expansion and contraction differences of seals from exacerbating crossflow problems. This has high practical value for many industrial applications that are sensitive to crossflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It shows a schematic diagram of the structure of the first temperature stage provided by an embodiment of the present invention; Figure 2shows a partial structural schematic diagram of the first temperature stage provided according to an embodiment of the present invention; Figure 3 It shows a schematic diagram of the second temperature stage structure provided by an embodiment of the present invention; Figure 4 shows a partial structural schematic diagram of the second temperature stage provided according to an embodiment of the present invention; Figure 5 It shows a schematic structural diagram of the third temperature stage provided by an embodiment of the present invention; Figure 6 A partial structural schematic diagram of the third temperature stage provided according to an embodiment of the present invention is shown.

[0028] Legend: 101. Hot air outlet cavity; 102. Core segment outer frame; 103. Hot air inlet cavity; 104. Cold air outlet cavity; 105. Core segment end face sealing plate; 106. Outer ring; 107. Circumferential seal; 108. Radial seal; 109. Hub seal; 110. Hub; 111. First chain; 112. Spoke block; 113. Spoke; 114. First reduction motor; 115. First reduction motor support; 116. First driving pulley; 117. Tensioning pulley; 118. Underframe; 119. Cold air inlet cavity; 120. External bearing; 121. Mandrel; 122. Core; 123. Square frame; 124. Gear block; 201, first outer ring hoop; 202, first bearing support seat; 203, first driven pulley; 204, first external bearing heat shield; 205, second reduction motor support; 206, second reduction motor; 207, second driving pulley; 208, transmission shaft; 209, second chain; 301. Third reduction motor support; 302. Second outer ring clamp; 303. Second bearing support seat; 304. Combined wheel hub; 305. Third reduction motor; 306. Third driving wheel; 307. Hollow transmission shaft; 308. Second driven wheel; 309. Third chain; 310. Second external bearing heat shield; 311. Transmission shaft cooling pipe; 312. Bearing cooling pipe. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention. Example 1

[0030] Reference Figure 1-Figure 2The present embodiment provides a combined hub rotary heat exchange device, comprising a core segment outer frame 102 having a base frame 118, wherein a square frame 123 is symmetrically arranged in the middle of the core segment outer frame 102, and a core segment end face sealing plate 105 is arranged on the core segment outer frame 102, and the core segment end face sealing plate 105 and the square frame 123 abut against each other to form a seal, and the core segment end face sealing plate 105 is semicircular and does not affect the flow of gas.

[0031] One side of the core segment outer frame 102 is provided with a hot air inlet chamber 103 and a hot air outlet chamber 101 that cooperate with each other and are connected to the core segment end face sealing plate 105, wherein the hot air inlet chamber 103 and the hot air outlet chamber 101 form an inlet and outlet channel for high-temperature fluid, and the air cavity is provided with holes that can be connected to external pipes.

[0032] The other side of the core segment outer frame 102 is provided with a cold air inlet cavity 119 and a cold air outlet cavity 104 which cooperate with each other and are connected to the core segment end face sealing plate 105, wherein the cold air inlet cavity 119 and the cold air outlet cavity 104 form the inlet and outlet channels of the low-temperature fluid.

[0033] The inner cavity of the square frame 123 is provided with an external bearing 120, and the inner cavity of the external bearing 120 is rotatably connected to the hub 110 through the core shaft 121, and the hub 110 is symmetrically provided with a plurality of spokes 113, and the ends of the spokes 113 are fixedly connected through the spoke blocks 112, and a core 122 is provided between the spokes 113 and the spoke blocks 112, and an outer ring 106 is provided outside the circumference of the core 122 and connected to the spoke blocks 112 and the spokes 113. The core 122 is composed of several metal heat exchange The heat exchanger plates are composed of a plurality of metal heat exchange plates, which are wound, stacked or assembled to form a honeycomb disc structure, wherein the high-temperature air inlet temperature range is divided into 50°C~300°C, and the hub 110, spokes 113, spoke blocks 112 and outer ring 106 are fixed by welding, riveting and screws to form an integrated skeleton structure, and the core 122 is vertically installed between the hub 110, the spokes 113 and the spoke blocks 112, which is suitable for low-temperature waste heat recovery, such as the recovery of a large amount of high-temperature exhaust gas waste heat in the production of lithium battery diaphragms.

[0034] The spokes 113 can be made of rectangular tubes or rectangular steel, arranged along the radial direction, with one end connected to the hub 110 and the other end connected to the spoke block 112 and the outer ring 106; the spoke block 112 can be made of rectangular tubes or rectangular steel, arranged parallel to the axis, connecting the spokes 113 corresponding to the front and rear end surfaces of the core 122 wheel disc, and connected to the outer ring 106.

[0035] A sealing assembly is arranged between the square frame 123 and the outer ring 106, and the sealing assembly includes a circumferential seal 107 arranged along the circumference of the core 122 between the outer ring 106 and the core segment end face sealing plate 105, and a radial seal 108 arranged radially along the core 122, and then a hub seal 109 is arranged on the surface of the core 122 and the spoke 113, wherein the circumferential seal 107 is used to achieve sealing between it and the core segment end face sealing plate 105, while the radial seal 108 and the hub seal 109 achieve sealing between it and the hub 110, the spoke 113 and the spoke block 112, thereby corresponding to the inlet and outlet channels of the high-temperature fluid and the inlet and outlet channels of the low-temperature fluid, so that they form separate wind channels.

[0036] The inner and outer surfaces of the core segment outer frame 102 are divided into 50°C~300°C according to the high-temperature air inlet temperature range, and a first drive component is correspondingly provided, the drive component includes a gear block 124 and a first reduction motor support 115 fixedly installed at the corner of the inner cavity of the core segment outer frame 102, and the surface of the first reduction motor support 115 is provided with a first reduction motor 114, the output end of the first reduction motor 114 passes through the surface of the first reduction motor support 115 and is provided with a first driving wheel 116, and the extended end of the first reduction motor support 115 is rotatably connected to a tensioning wheel 117 for adjusting the tensioning force, a first chain 111 is movably provided between the first driving wheel 116, the tensioning wheel 117 and the gear block 124, and the gear block 124 is fixedly mounted on the spoke block 112 Working principle, S1, device inspection: confirm that the hot air inlet chamber 103, the hot air outlet chamber 101, the cold air inlet chamber 119, and the cold air outlet chamber 104 are connected smoothly without blockage or leakage, and check whether the sealing components are complete; S2. Device startup: Start the first reduction motor 114 to drive the first driving wheel 116 to rotate, so that the first driving wheel 116 engages with the gear block 124 through the first chain 111, driving the integrated skeleton of the hub 110, spokes 113, spoke blocks 112, outer ring 106 and core 122 to rotate at a uniform speed along the axis along the inner wall of the core segment end face sealing plate 105 and the inner cavity of the core segment outer frame 102 through the core shaft 121 and the external bearing 120. Use the tensioning pulley 117 to adjust the tension of the first chain 111 to ensure stable operation of the transmission system; S3. Heat exchange: High-temperature fluid enters the hot air inlet chamber 103, flows into the heat exchange mechanism through the core segment end face sealing plate 105, and flows through the core 122 to absorb the heat, thereby cooling the generated high temperature. Finally, it is discharged from the hot air outlet chamber 101. Low-temperature fluid enters the cold air inlet chamber 119, flows into the core 122 to reduce the temperature of the core 122 in the hot chamber, and finally is discharged from the cold air outlet chamber 104. S4. Shutdown: After the heat exchange is completed, first close the hot air and cold air inlet channels, and then stop the operation of the drive components. Example 2

[0037] Reference Figure 3-Figure 4 The difference from Example 1 is that the high-temperature air inlet temperature range is 100°C~600°C, and a second drive assembly is adopted. The second drive assembly includes a first outer ring clamp 201, a first external bearing heat insulation plate 204, and a second reduction motor support 205 and a first bearing support seat 202 fixedly mounted on the base frame 118. A transmission shaft 208 is rotatably sleeved in the first bearing support seat 202. A second reduction motor 206 is provided on the surface of the second reduction motor support 205, and the output end of the second reduction motor 206 passes through the surface of the second reduction motor support 205 and is provided with a second driving wheel 207. A first driven wheel 203 is provided at one end of the transmission shaft 208, and a plurality of second chains 209 are provided between the first driven wheel 203 and the second driving wheel 207.

[0038] The other end of the transmission shaft 208 is installed in the wheel hub 110 , the first outer ring hoop 201 is wrapped and installed on the outer ring 106 , and the first external bearing heat shield 204 is located on the side of the external bearing 120 close to the core 122 .

[0039] The first outer ring clamp 201 can be made of a rounded rectangular tube or rectangular steel in a ring shape. It is outside the outer ring 106 and connected to the outer ring 106. Several first outer ring clamps 201 constrain the outer ring of the core 122 into a circle; the hub 110 is located on the core shaft 121 or the transmission shaft 208 to support the entire wheel-shaped core 122.

[0040] The high-temperature air inlet temperature range is 200℃~450℃, and the hub 110, spokes 113, spoke blocks 112, outer ring 106 and the first outer ring clamp 201 are fixed by welding, riveting and screws to form an integrated skeleton structure. The integrated skeleton structure can be reinforced by the first outer ring clamp 201. In addition, the external bearing 120 needs to be arranged externally, and the first external bearing insulation plate 204 is used to insulate the external bearing 120, which is suitable for medium-temperature flue gas heat exchange such as flue gas waste heat recovery in ceramic firing kilns.

[0041] The difference between the working principle and embodiment 1 is in S2, device startup: Start the second reduction motor 206 to drive the second driving wheel 207 to rotate, so that the second driving wheel 207 engages with the first driven wheel 203 through the second chain 209, and drives the integrated skeleton of the hub 110, spokes 113, spoke blocks 112, outer ring 106 and core body 122 to rotate at a uniform speed along the axis through the core shaft 121 and the external bearing 120 along the inner wall of the core segment end face sealing plate 105 and the inner cavity of the core segment outer frame 102. Example 3

[0042] Reference Figure 5-Figure 6 The difference from Example 2 is that the high-temperature air inlet temperature range is 300°C~1100°C, and a third drive assembly is adopted. The third drive assembly includes a third reduction motor support 301 and a second bearing support seat 303 fixedly mounted on the base frame 118, as well as a second outer ring clamp 302, a second bearing support seat 303, a combined hub 304, a hollow transmission shaft 307 and a second external bearing heat insulation plate 310. A third reduction motor 305 is provided on the surface of the third reduction motor support 301, and the output end of the third reduction motor 305 passes through the surface of the third reduction motor support 301 and is provided with a third driving wheel 306, and one end of the hollow transmission shaft 307 is provided with a second driven wheel 308, and a plurality of third chains 309 are provided between the third driving wheel 306 and the second driven wheel 308.

[0043] The combined hub 304 is used to replace the hub 110, wherein an axial hole is provided in the middle of the inner cavity of the combined hub 304 for connecting the hollow transmission shaft 307. The combined hub 304 can adopt a three-section structure, including an intermediate hub and two outer hubs, which are connected by welding, riveting, or bolts, and the structure is more stable.

[0044] And it is connected to the spokes 113. The second external bearing heat insulation plate 310 is located on the side of the external bearing 120 close to the core 122. The other end of the hollow drive shaft 307 is installed in the combined hub 304, and the hollow drive shaft 307 and the external bearing 120 are respectively provided with a drive shaft cooling pipe 311 and a bearing cooling pipe 312 for passing a cooling medium. The combined hub 304 is composed of several hubs 110, wherein the cooling medium is air, thermal oil, or coolant, etc., and there is a cavity and a bearing cooling pipe 312 inside the external bearing 120.

[0045] The high-temperature air inlet temperature range is 300°C to 1100°C, and the combined hub 304, spokes 113, spoke blocks 112, outer ring 106, second outer ring clamp 302 and core 122 are fixed by welding, riveting and screws to form an integrated skeleton structure. The second outer ring clamp 302 can reinforce the integrated skeleton structure. In addition, the external bearing 120 needs to be set outside. The difference from Example 1 is that the size of the external bearing 120 is different. , and a second external bearing heat insulation plate 310 is used to insulate the external bearing 120, which is suitable for high-temperature flue gas heat exchange such as flue gas waste heat recovery in thermal combustion furnaces, waste incinerators, high-temperature quenching towers, etc.

[0046] The difference between the working principle and embodiment 1 is in S2, device startup: Start the second reduction motor 206 to drive the third driving wheel 306 to rotate, so that the third driving wheel 306 engages with the second driven wheel 308 through the third chain 309, and drives the combined hub 304, spokes 113, spoke blocks 112, outer ring 106 and core body 122 one-piece skeleton to rotate at a uniform speed along the axis through the core shaft 121 and the external bearing 120 along the inner wall of the core segment end face sealing plate 105 and the inner cavity of the core segment outer frame 102. At the same time, the cooling medium is transported through the transmission shaft cooling pipe 311 and the bearing cooling pipe 312 to cool the hollow transmission shaft 307 and the second bearing support seat 303 respectively.

[0047] The present invention provides industrial rotary heat exchangers for the lithium battery diaphragm waste gas waste heat recovery industry, the ceramic firing kiln flue gas waste heat recovery industry, and the thermal combustion furnace TO furnace flue gas waste heat recovery industry, all of which achieve a heat exchange efficiency of more than 70%, realize very good economic and social benefits, and make new contributions to energy conservation and emission reduction.

[0048] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A combined hub rotary heat exchange device, characterized in that: The invention comprises a core segment outer frame (102) having a base frame (118), a square frame (123) is symmetrically arranged in the middle of the core segment outer frame (102), a core segment end face sealing plate (105) is arranged on the core segment outer frame (102), and the core segment end face sealing plate (105) and the square frame (123) abut against each other to form a seal, and an external bearing (120) is arranged in the inner cavity of the square frame (123), and the external bearing (120) 0) The inner cavity is rotatably connected to the hub (110) through the core shaft (121), and a plurality of spokes (113) are symmetrically arranged on the hub (110), and the ends of the spokes (113) are fixedly connected through the spoke blocks (112), a core body (122) is arranged between the spokes (113) and the spoke blocks (112), and an outer ring (106) is arranged outside the circumference of the core body (122) and connected to the spoke blocks (112) and the spokes (113); A sealing assembly is provided between the square frame (123) and the outer ring (106); The inner and outer surfaces of the core segment outer frame (102) are divided into 50°C to 300°C, 100°C to 600°C, and 300°C to 1100°C according to the high-temperature air inlet temperature range, and are correspondingly provided with a first drive assembly, a second drive assembly, and a third drive assembly.

2. The combined hub rotary heat exchange device according to claim 1, characterized in that: One side of the core segment outer frame (102) is provided with a hot air inlet cavity (103) and a hot air outlet cavity (101) that cooperate with each other and are connected to the core segment end face sealing plate (105), and the other side of the core segment outer frame (102) is provided with a cold air inlet cavity (119) and a cold air outlet cavity (104) that cooperate with each other and are connected to the core segment end face sealing plate (105).

3. The combined hub rotary heat exchange device according to claim 1, characterized in that: The sealing assembly comprises a circumferential seal (107) arranged along the circumference of the core (122) between the outer ring (106) and the core segment end face sealing plate (105), and a radial seal (108) arranged along the radial direction of the core (122), followed by a hub seal (109) arranged on the surface of the core (122) and the spoke (113), forming a separate air channel.

4. The combined hub rotary heat exchange device according to claim 1, characterized in that: The first driving assembly comprises a gear block (124) and a first reduction motor support (115) fixedly mounted at a corner of the inner cavity of the core segment outer frame (102), and a first reduction motor (114) is provided on the surface of the first reduction motor support (115), an output end of the first reduction motor (114) passes through the surface of the first reduction motor support (115) and is provided with a first driving wheel (116), and an extended end of the first reduction motor support (115) is rotatably connected to a tensioning wheel (117) for adjusting the tensioning force, a first chain (111) is movably arranged between the first driving wheel (116), the tensioning wheel (117) and the gear block (124), and the gear block (124) is fixedly mounted on the spoke block (112).

5. The combined hub rotary heat exchange device according to claim 1, characterized in that: The second driving assembly comprises a first outer ring hoop (201), a first external bearing heat insulation plate (204), a second reduction motor support (205) and a first bearing support seat (202) fixedly mounted on the base frame (118), a transmission shaft (208) being rotatably sleeved in the first bearing support seat (202), a second reduction motor (206) being arranged on the surface of the second reduction motor support (205), and a second driving wheel (207) being arranged on the surface of the second reduction motor support (205) through the output end of the second reduction motor (206), a first driven wheel (203) being arranged at one end of the transmission shaft (208), and a plurality of second chains (209) being arranged between the first driven wheel (203) and the second driving wheel (207).

6. The combined hub rotary heat exchange device according to claim 5, characterized in that: The other end of the transmission shaft (208) is mounted in the wheel hub (110), the first outer ring hoop (201) is wrapped and mounted on the outer wrapping ring (106), and the first external bearing heat shield (204) is located on the side of the external bearing (120) close to the core (122).

7. The combined hub rotary heat exchange device according to claim 1, characterized in that: The third driving assembly comprises a third reduction motor support (301) and a second bearing support seat (303) fixedly mounted on the base frame (118), as well as a second outer ring hoop (302), a second bearing support seat (303), a combined wheel hub (304), a hollow transmission shaft (307) and a second external bearing heat insulation plate (310), wherein a third reduction motor (305) is provided on the surface of the third reduction motor support (301), and an output end of the third reduction motor (305) passes through the surface of the third reduction motor support (301) and is provided with a third driving wheel (306), and one end of the hollow transmission shaft (307) is provided with a second driven wheel (308), and a plurality of third chains (309) are provided between the third driving wheel (306) and the second driven wheel (308).

8. The combined hub rotary heat exchange device according to claim 7, characterized in that: The combined hub (304) is used to replace the hub (110) and is connected to the spokes (113). The second external bearing heat shield (310) is located on the side of the external bearing (120) close to the core (122). The other end of the hollow transmission shaft (307) is installed in the combined hub (304). The hollow transmission shaft (307) and the external bearing (120) are respectively provided with a transmission shaft cooling pipe (311) and a bearing cooling pipe (312) capable of passing a cooling medium. The combined hub (304) is composed of a plurality of hubs (110).

9. The combined hub rotary heat exchange device according to claim 1, characterized in that: The core (122) is composed of a plurality of metal heat exchange fins, which are formed into a honeycomb disc structure by adopting one of winding, stacking, and assembling methods.

10. The combined hub rotary heat exchange device according to claim 1, characterized in that: An axial hole is provided in the middle of the inner cavity of the combined wheel hub (304) for connecting the hollow transmission shaft (307).

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