A megawatt-class cylindrical bearing housing belt pulley drive radiator for internal combustion engine generator sets

Abstract

This utility model relates to a megawatt-class cylindrical bearing housing belt-driven internal combustion engine generator radiator. It includes a support frame, a high-temperature water core assembly, a low-temperature water core assembly, an air guide box cover, a belt-driven fan assembly, a fan shroud, a cooling oil core assembly, and mounting feet. The belt-driven fan assembly includes a load-bearing support frame, a cylindrical bearing housing, a hub fan blade, a pulley, a tensioner, and a main load-bearing beam. The cylindrical bearing housing includes a drive shaft and a housing cylinder. Bearing supports are located at both ends of the housing cylinder, and end caps are installed at both ends. A shaft end cap oil seal is located at the outer end of the end cap, and a drive shaft end cap is located outside the shaft end cap oil seal. A fixed base plate is located at the bottom of the housing cylinder and is mounted on the main load-bearing beam. By integrating two bearing supports into a single housing and positioning them at both ends, deviations in concentricity, horizontality, and verticality are avoided, reducing vibration.

Description

Technical Field

[0001] This utility model relates to a radiator for an internal combustion engine generator set, and more particularly to a megawatt-class cylindrical bearing housing belt pulley driven internal combustion engine generator set radiator, belonging to the field of radiator technology. Background Technology

[0002] Leading internal combustion engine companies such as Weichai, SDECPOWER, and YUCHAIENGINE take it upon themselves to develop and strengthen the national industry, accelerating the pace of product technology innovation and iterative upgrades. The power output per unit displacement of domestically produced internal combustion engines is constantly increasing. Among them, Weichai Baudouin's latest light oil internal combustion engine (20M55D4550E310) launched in 2024 has a maximum total power of 4.55 megawatts, creating a demand for corresponding large closed-loop cooling radiators. The radiator products are required to be able to replace foreign imports and fill domestic gaps.

[0003] Due to the increasing size of internal combustion engines, higher performance requirements are placed on closed-loop radiators during operation. Radiators need to have fast heat exchange rates, high heat dissipation efficiency, and a larger absolute amount of heat dissipation, resulting in larger radiator fronts and volumes. Large internal combustion engines are mostly V-type 12-20 cylinder structures with a low geometric center of the crankshaft, while the radiators are larger and have a higher geometric center. To address these characteristics, a belt-driven system is used. The engine crankshaft drives the fan assembly via a belt pulley, blowing air in the forward direction (drawing air in the reverse direction) to cool the radiator core, ensuring the generator set achieves the desired closed-loop cooling effect.

[0004] Due to the large size of the radiator, three prominent problems are prone to occur during the assembly and operation of belt-driven radiators: 1. When installed with an internal combustion engine, deviations in concentricity, levelness, and verticality are likely to occur; 2. Due to the large diameter of the fan assembly blades and the high linear velocity of the outer end, coupled with the heavy weight of the belt-driven mechanism and the fan assembly, the entire radiator will vibrate if the concentricity is inaccurate; 3. The high-speed rotation of the bearings in the belt-driven mechanism generates a lot of frictional heat and has a high heat dissipation intensity, which can easily lead to accelerated wear. Utility Model Content

[0005] To address the above technical problems, this utility model proposes a megawatt-class cylindrical bearing housing belt pulley drive radiator for internal combustion engine generator sets.

[0006] Therefore, the technical solution adopted by this utility model is: A megawatt-class cylindrical bearing-mounted belt-driven internal combustion engine generator radiator includes a support frame, a high-temperature water core assembly, a low-temperature water core assembly, an air guide box cover, a belt-driven fan assembly, a fan shroud, a cooling oil core assembly, and mounting feet. The belt-driven fan assembly includes a load-bearing support frame, a cylindrical bearing support, a hub fan blade, a pulley, a tensioner, and a main load-bearing beam. The load-bearing support frame has an H-shaped structure. The main load-bearing beam is mounted on the upper end of the load-bearing support frame and fixedly connected to the two side plates of the load-bearing support frame. The front sides of the two side plates of the load-bearing support frame are fixedly connected to the air guide box cover. The lower end is fixedly connected to the mounting base. The tensioning wheel is connected to the main load-bearing crossbeam through a connecting plate. The cylindrical bearing support includes a drive shaft and a support cylinder. Bearing supports are respectively provided at both ends of the support cylinder. The drive shaft cooperates with the bearing support through the bearing. The hub fan blade and the pulley are respectively installed at both ends of the drive shaft. A cylinder end cover is respectively installed at both ends of the support cylinder. A shaft end cover oil seal is provided at the outer end of the cylinder end cover. A drive shaft end cover is provided on the outer side of the shaft end cover oil seal. A fixed base plate is provided at the bottom of the support cylinder. The fixed base plate is installed on the main load-bearing crossbeam. The cooling oil core assembly is fixedly installed on the outer side of the fan shroud.

[0007] As a further improvement to the above technical solution, the high-temperature water core assembly includes a high-temperature water outlet and a high-temperature water inlet, which are respectively connected to the water inlet and outlet of the internal combustion engine cylinder liner water chamber to form a circulating cooling circuit.

[0008] As a further improvement to the above technical solution, the low-temperature water core assembly includes a low-temperature water outlet and a low-temperature water inlet, which are respectively connected to the water inlet and outlet of the intercooler water chamber of the internal combustion engine to form a circulating cooling circuit.

[0009] As a further improvement to the above technical solution, the cooling oil core assembly includes an oil inlet and an oil outlet, which are respectively connected to the internal combustion engine fuel circuit pipeline and the fuel tank pipeline.

[0010] As a further improvement to the above technical solution, the upper end of the support cylinder is provided with an oil filling port, and the inside of the support cylinder is filled with lubricating grease.

[0011] The advantages of this utility model are: This invention integrates two bearing supports into a single support cylinder and positions them at both ends, avoiding deviations in concentricity, horizontality, and verticality, and reducing vibration. End caps, shaft end caps, and drive shaft end caps are installed at both ends of the support cylinder to prevent bearing lubricant leakage. The interior of the support cylinder is filled with bearing lubricant, which both lubricates the bearings and dissipates heat. The use of a belt-driven fan assembly with matching cylindrical bearing supports improves the assembly precision of the radiator assembly, enhances its vibration resistance, and reduces wear on the drive bearings, thus significantly improving the overall efficiency of the radiator and extending its service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 The left view.

[0014] Figure 3 This is a schematic diagram of the belt-driven fan assembly.

[0015] Figure 4 yes Figure 3 The left view.

[0016] Figure 5 This is a schematic diagram of the structure of a cylindrical bearing support.

[0017] Figure 6 yes Figure 5 Top view.

[0018] Figure 7 yes Figure 5 The left view.

[0019] In the diagram, 1 is the support frame, 2 is the high-temperature water core assembly, 3 is the low-temperature water core assembly, 4 is the air guide box cover, 5 is the belt pulley driven fan assembly, 6 is the fan shroud, 7 is the cooling oil core assembly, 8 is the mounting foot, 201 is the high-temperature water outlet, 202 is the high-temperature water inlet, 301 is the low-temperature water outlet, 302 is the low-temperature water inlet, 501 is the load-bearing support frame, 502 is the cylindrical bearing support, 503 is the hub fan blade, 504 is the belt pulley, 505 is the tensioner, 506 is the main load-bearing crossbeam, 50201 is the drive shaft, 50202 is the support cylinder, 50203 is the bearing support, 50204 is the cylinder end cover, 50205 is the shaft end cover oil seal, 50206 is the drive shaft end cover, 50207 is the fixed base plate, and 50208 is the oil filler port. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-7 As shown, a megawatt-class cylindrical bearing housing belt-driven internal combustion engine generator radiator includes a support frame 1, a high-temperature water core assembly 2, a low-temperature water core assembly 3, an air guide box cover 4, a belt-driven fan assembly 5, a fan shroud 6, a cooling oil core assembly 7, and mounting feet 8. The belt-driven fan assembly 5 includes a load-bearing support frame 501, a cylindrical bearing support 502, a hub fan blade 503, a pulley 504, a tensioner 505, and a main load-bearing crossbeam 506. The load-bearing support frame 501 has an H-shaped structure. The main load-bearing crossbeam 506 is installed on the upper end of the load-bearing support frame 501 and is fixedly connected to the two side plates of the load-bearing support frame 501. A support rod is provided between the main load-bearing crossbeam 506 and the crossbeam in the middle of the load-bearing support frame 501. The front sides of the two side plates of the load-bearing support frame 501 are fixedly connected to the air guide box cover 4. The lower ends of the two side plates of the load-bearing support frame 501 are fixedly connected to the mounting feet 8. The tensioning wheel 505 is connected to the main load-bearing crossbeam 506 through a connecting plate. The cylindrical bearing support 502 includes a drive shaft 50201 and a support cylinder 50. 202, bearing supports 50203 are respectively provided at both ends of the support cylinder 50202. The drive shaft 50201 cooperates with the bearing supports 50203 through bearings. The hub fan blade 503 and the pulley 504 are respectively installed at both ends of the drive shaft 50201. The hub fan blade 503 is driven to rotate by the belt connecting the pulley 504 and the tensioner 505. The cylinder end cover 50204 is respectively installed at both ends of the support cylinder 50202. The outer end of the cylinder end cover 50204 is provided with a shaft end cover oil seal 50205. The outer side of the shaft end cover oil seal 50205 is provided with a drive shaft end cover 50206. The bottom of the support cylinder 50202 is provided with a fixed base plate 50207. The fixed base plate 50207 is fixedly installed on the main load-bearing crossbeam 506, integrating the two bearing supports into one support cylinder and positioning both ends to avoid deviations in concentricity, horizontality, and verticality, and to reduce vibration. The cooling oil core assembly 7 is fixedly installed on the outer side of the fan shroud 6, which facilitates the reverse air intake of the hub fan blades to cool the cooling oil core assembly.

[0022] In operation, this utility model has three functions: First, it cools the cooling water in the cylinder liner water chamber of the internal combustion engine. The high-temperature water core assembly 2 includes a high-temperature outlet 201 and a high-temperature inlet 202, which are connected to the inlet and outlet of the cylinder liner water chamber of the internal combustion engine, respectively, to form a circulating cooling circuit. Second, it cools the cooling water in the intercooler water chamber of the internal combustion engine. The low-temperature water core assembly 3 includes a low-temperature outlet 301 and a low-temperature inlet 302, which are connected to the inlet and outlet of the intercooler water chamber of the internal combustion engine, respectively, to form a circulating cooling circuit. Third, it cools the fuel in the internal combustion engine circuit. The cooling oil core assembly 7 includes an oil inlet and an oil outlet, which are connected to the fuel circuit pipeline and the fuel tank pipeline of the internal combustion engine, respectively.

[0023] The high-temperature water core assembly 2, the low-temperature water core assembly 3, and the cooling oil core assembly 7 all share a belt-driven fan assembly 5. The fan blades 503 blow air in the forward direction to cool the high-temperature water core assembly 2 and the low-temperature water core assembly 3, and draw air in the reverse direction to cool the cooling oil core assembly 7.

[0024] As a further improvement to the above technical solution, the upper end of the support cylinder 50202 is provided with an oil filling port 50208, which facilitates timely filling of the internal cavity of the support cylinder with lubricating grease. The support cylinder 50202 is filled with lubricating grease, which has a large heat absorption capacity and can both lubricate the bearing and dissipate heat to cool down.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A megawatt barrel bearing block pulley transmission internal combustion engine generator set radiator characterized by, The system includes a support frame, a high-temperature water core assembly, a low-temperature water core assembly, an air guide box cover, a belt-driven fan assembly, a fan shroud, a cooling oil core assembly, and mounting feet. The belt-driven fan assembly includes a load-bearing support frame, a cylindrical bearing support, a hub fan blade, a pulley, a tensioner, and a main load-bearing beam. The load-bearing support frame is an H-shaped structure. The main load-bearing beam is mounted on the upper end of the load-bearing support frame and fixedly connected to the two side plates of the load-bearing support frame. The front sides of the two side plates of the load-bearing support frame are fixedly connected to the air guide box cover, and the lower ends of the two side plates of the load-bearing support frame are fixedly connected to the mounting feet. The tensioner pulley is connected to the main load-bearing crossbeam via a connecting plate. The cylindrical bearing support includes a drive shaft and a support cylinder. Bearing supports are provided at both ends of the support cylinder. The drive shaft is engaged with the bearing supports via bearings. The hub fan blade and pulley are respectively installed at both ends of the drive shaft. End caps are installed at both ends of the support cylinder. A shaft end cap oil seal is provided at the outer end of the cylinder end cap. A drive shaft end cap is provided on the outer side of the shaft end cap oil seal. A fixed base plate is provided at the bottom of the support cylinder. The fixed base plate is installed on the main load-bearing crossbeam. The cooling oil core assembly is fixedly installed on the outer side of the fan shroud.

2. A megawatt class, bearing pedestal, belt driven, internal combustion engine generator set radiator as set forth in claim 1 wherein, The high-temperature water core assembly includes a high-temperature water outlet and a high-temperature water inlet, which are respectively connected to the water inlet and outlet of the internal combustion engine cylinder liner water chamber to form a circulating cooling circuit.

3. A megawatt class, bearing pedestal, belt driven, internal combustion engine generator set radiator as set forth in Claim 1, wherein, The low-temperature water core assembly includes a low-temperature water outlet and a low-temperature water inlet, which are respectively connected to the water inlet and outlet of the intercooler water chamber of the internal combustion engine to form a circulating cooling circuit.

4. A megawatt class, bearing pedestal, belt driven, internal combustion engine generator set radiator as set forth in Claim 1, wherein, The cooling oil core assembly includes an oil inlet and an oil outlet, which are respectively connected to the internal combustion engine fuel circuit pipeline and the fuel tank pipeline.

5. A megawatt class, bearing pedestal, belt driven, internal combustion engine generator set radiator as set forth in Claim 1, wherein, The upper end of the support cylinder is provided with an oil filling port, and the inside of the support cylinder is filled with lubricating grease.

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