A top drive cooling structure coupled with air cooling

Abstract

The utility model discloses a kind of air-cooled coupling type top drive heat dissipation structures, comprising: air-cooled motor, the extension of its main shaft is fixed with fan blade assembly;First gear oil radiator module, in the one side of air-cooled motor cowling;Hydraulic oil radiator module, it is in the one side of fan blade assembly;Wherein, the fan blade assembly is set to blow towards hydraulic oil radiator module.This utility model provides a kind of efficient, reliable, compact integrated heat dissipation integrated structure for gear oil and hydraulic oil system, fully utilizes the cooling airflow path of existing top drive, realizes the efficient cooling of oil product, guarantees the stable operation of top drive under harsh environment such as high temperature.

Description

Technical Field

[0001] This utility model relates to the field of lubrication and heat dissipation technology for top drive equipment of oil drilling rigs. More specifically, this utility model relates to a wind-cooled coupled top drive heat dissipation structure. Background Technology

[0002] Top drive units are key equipment in modern oil drilling rigs. Their core components, such as the gearbox, swivel, and top drive motor, rely on gear oil for effective lubrication and cooling during operation to ensure long-term stable operation. However, existing top drive unit designs, especially for gear oil systems, typically lack dedicated, integrated radiator devices. Conventional gear oil lubrication systems primarily rely on the oil's own heat capacity and natural heat dissipation from the gearbox surface, resulting in limited cooling capacity.

[0003] This problem of insufficient heat dissipation is particularly pronounced under harsh operating conditions. For example, when operating in high-temperature environments such as deserts, the ambient temperature is already high, and the top drive equipment generates a large amount of frictional heat during prolonged high-load operation, causing the gear oil and hydraulic oil temperatures to easily rise to abnormally high levels. Excessive lubricating oil temperature can lead to a series of serious consequences: accelerated oil deterioration, increased abnormal gear wear, aging and failure of seals, and decreased equipment reliability. Currently, although some external or independent oil cooling solutions exist, such as water-cooled radiators, these solutions are often difficult to integrate directly and effectively into top drive equipment with extremely compact space layouts and harsh working environments. Their installation locations are limited, and adding additional air ducts or water channels can lead to structural complexity, an increase in potential failure points, and increased energy consumption. Utility Model Content

[0004] The purpose of this invention is to provide a wind-cooled coupled top drive heat dissipation structure, which provides an efficient, reliable, compact and integrated heat dissipation structure for gear oil and hydraulic oil systems without significantly increasing the size and complexity of the top drive equipment. It makes full use of the existing cooling airflow path of the top drive to achieve efficient cooling of the oil and ensure the stable operation of the top drive in harsh environments such as high temperature.

[0005] The technical solution adopted by this utility model to solve this technical problem is: a wind-cooled coupling type top drive heat dissipation structure, comprising: An air-cooled motor, with a fan blade assembly fixed to the extension of its main shaft; The first gear oil cooler module is located on one side of the air-cooled motor shroud; Hydraulic oil radiator module, which is located on one side of the fan blade assembly; The fan blade assembly is configured to blow air toward the hydraulic oil radiator module.

[0006] As a further embodiment of this utility model, an air outlet is provided at the bottom of the air-cooled motor shroud.

[0007] As a further embodiment of this utility model, the rotation plane of the fan blade assembly faces the hydraulic oil radiator module, and the diameter of the fan blade covers the projection area of ​​the hydraulic oil radiator module.

[0008] As a further embodiment of this utility model, it also includes a second gear oil cooler module, which is integrated above or below the hydraulic oil cooler module, and the first gear oil cooler module and the second gear oil cooler module are connected in series. The rotation plane of the fan blade assembly is directly opposite the hydraulic oil radiator module and the second gear oil radiator module, and the diameter of the fan blades of the fan blade assembly covers the projection area of ​​the hydraulic oil radiator module superimposed on the second gear oil radiator module.

[0009] As a further aspect of this utility model, the gear oil radiator module and the hydraulic oil radiator module adopt finned tube heat exchangers, and the fin direction is parallel to the airflow direction.

[0010] As a further embodiment of this utility model, the main shaft extension fan blade assembly is fixed to the main shaft extension part by a keyway or flange.

[0011] A further embodiment of this utility model is: a heat dissipation shroud located on the periphery of the first gear oil radiator module, which is connected to the fan shroud of the air-cooled motor. The heat dissipation cover located around the fan blade assembly and hydraulic oil radiator module has an opening on the side facing the air-cooled motor. The opening is larger than the diameter of the fan blade of the fan blade assembly, and several ventilation holes are provided on this side. The side of the heat dissipation cover away from the air-cooled motor has a finned heat dissipation structure.

[0012] This utility model has at least the following beneficial effects: 1. Extremely high space utilization, suitable for the compact structure of top drive. By integrating the gear oil cooler module and hydraulic oil cooler module on the side of the air-cooled motor, and utilizing the air intake shroud of the air-cooled motor, the installation problem of radiators caused by the limited internal space of the top drive is solved without the need for additional independent air ducts or external cooling units.

[0013] 2. Dual power synergy doubles heat dissipation efficiency. On one hand, the inherent suction effect of the air-cooled motor forces airflow through the gear oil cooler module; on the other hand, the rotation of the main shaft extension fan blade assembly generates directional pressurized airflow, achieving rapid cooling of the hydraulic oil cooler module.

[0014] 3. The air-cooled motor is an integral part of the top drive, therefore it consumes zero additional energy and has high operational reliability. The spindle extension fan blade assembly is directly driven by the air-cooled motor spindle, eliminating the need for additional motors or hydraulic power sources and avoiding the problems of increased failure points and energy consumption caused by adding external power devices.

[0015] 4. Significantly reduced maintenance costs. The modular design allows the radiator to be disassembled and cleaned as a whole, and there are no complicated water circuits or external power supplies, making it particularly suitable for the operation and maintenance needs of harsh working conditions such as desert oil fields.

[0016] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the air-cooled coupling type top drive heat dissipation structure of this utility model; Figure 2 This is a schematic diagram of the hidden fan cover and heat sink of the air-cooled coupling type top drive heat dissipation structure of this utility model.

[0018] Among them, 1-air-cooled motor, 2-main shaft, 3-first gear oil radiator module, 4-fan blade assembly, 5-hydraulic oil radiator module, 6-second gear oil radiator module, 7-air-cooled motor shroud, 8-heat sink. Detailed Implementation

[0019] The present invention will now be described in detail and completely with reference to the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be particularly noted that the technical solutions and features provided in the various parts of the present invention, including the following description, can be combined with each other without conflict.

[0020] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The specific implementation process is as follows: like Figures 1-2 As shown, this utility model provides a wind-cooled coupled top-drive heat dissipation structure, including: The air-cooled motor 1 has a fan blade assembly 4 fixed to the extension of its main shaft 2; The first gear oil cooler module 3 is located on one side of the air-cooled motor shroud 7, and a fan is installed inside the shroud; Hydraulic oil radiator module 5, which is located on one side of fan blade assembly 4; The fan blade assembly 4 is configured to blow air toward the hydraulic oil radiator module 5.

[0022] In the above technical solution, during the gear oil inlet stage, high-temperature gear oil enters the inlet of the first gear oil radiator module 3 from the gearbox outlet via an oil pipe. The oil flows into the finned tube flow channel. The fan inside the air-cooled motor shroud 7 generates negative pressure, drawing in external cold air. This air penetrates the gaps between the gear oil radiator fins, and the oil exchanges heat with the cold air counter-currently within the flow channel, achieving cooling. After cooling, the oil flows out from the outlet of the first gear oil radiator module 3 and is pumped back to the gearbox inlet by the oil pump, completing the lubrication cycle. During the hydraulic oil inlet stage, high-temperature hydraulic oil enters the inlet of the hydraulic oil radiator module 5 from the hydraulic station return line. The oil flows into the finned tube flow channel. The fan blade assembly 4 rotates at high speed with the air-cooled motor spindle 2, generating a directional pressurized airflow that blows directly onto the surface of the hydraulic oil radiator module 5, achieving cooling. After cooling, the hydraulic oil flows out from the outlet of the hydraulic oil radiator module 5 and returns to the hydraulic system oil tank of the top drive. The heat dissipation structure of this application has extremely high space utilization and is suitable for the compact structure of the top drive. When the air-cooled coupled top drive heat dissipation structure is working, after the air-cooled motor starts, the fan inside the shroud starts and draws air from the outside into the shroud. Before entering the shroud, the outside air is cooled by the gear oil cooler module and then enters the shroud and is discharged from the bottom of the shroud. At the same time, the main shaft 2 at the other end of the air-cooled motor synchronously drives the fan blade assembly 4 to blow air, thereby dissipating heat from the hydraulic oil cooler module 5.

[0023] This technical solution may also include the following technical details to better achieve the technical effect: the bottom of the air-cooled motor shroud 7 is provided with an air outlet. In a preferred embodiment, the strip-shaped grille air outlet at the bottom of the air-cooled motor shroud 7 utilizes the characteristic of hot air sinking to export some hot air from the air-cooled motor shroud 7.

[0024] This technical solution may also include the following technical details to better achieve the technical effect: the rotation plane of the fan blade assembly 4 is directly opposite the hydraulic oil radiator module 5, and the diameter of the fan blade covers the projection area of ​​the hydraulic oil radiator module 5. When in use, the main shaft 2 rotates to drive the fan blade to generate airflow, and the entire area is uniformly cooled by the fins of the hydraulic oil radiator module 5.

[0025] This technical solution may also include the following technical details to better achieve the technical effect: it also includes a second gear oil cooler module 6, which is integrated above or below the hydraulic oil cooler module 5. In this embodiment, the second gear oil cooler module 6 is integrated directly above the hydraulic oil cooler module 5 by bolts; the first gear oil cooler module 3 and the second gear oil cooler module 6 are connected in series. Specifically, the oil inlet of the first gear oil cooler module 3 is connected to the oil outlet of the gearbox through an oil pipe, and the oil outlet of the first gear oil cooler module 3 is connected to the oil inlet of the second gear oil cooler module 6 through an oil pipe. The oil outlet of the second gear oil cooler module 6 is pumped back to the oil inlet of the gearbox through an oil pump. The rotating plane of the fan blade assembly 4 is directly opposite the hydraulic oil radiator module 5 and the second gear oil radiator module 6. The diameter of the fan blades of the fan blade assembly 4 covers the projection area of ​​the hydraulic oil radiator module 5 superimposed on the second gear oil radiator module 6. The design of the above technical solution is particularly suitable for high-temperature desert conditions, realizing multi-stage heat dissipation of gear oil.

[0026] This technical solution may also include the following technical details to better achieve the technical effect: the gear oil radiator module and the hydraulic oil radiator module 5 adopt finned tube heat exchangers, and the fin direction is parallel to the airflow direction. When in use, the airflow passes through the fin gap in a straight line to avoid eddy current loss.

[0027] This technical solution may also include the following technical details to better achieve the technical effect: the main shaft 2 extension fan blade assembly 4 is fixed to the extension of the main shaft 2 by a keyway or flange.

[0028] This technical solution may also include the following technical details to better achieve the technical effect: It also includes: a heat dissipation cover 8 located around the first gear oil radiator module 3, which is connected to the air-cooled motor shroud 7; a heat dissipation cover 8 located around the fan blade assembly 4 and the hydraulic oil radiator module 5, with an opening on the side facing the air-cooled motor. The opening guides airflow axially through the two radiators to cool the radiator fins. The opening is larger than the diameter of the fan blades of the fan blade assembly 4, and this side is provided with several ventilation holes, preferably at a 30° angle to effectively trap sand and dust. The side of the heat dissipation cover 8 away from the air-cooled motor has a finned heat dissipation structure. In addition, the heat dissipation cover 8 also has a safety protection function, with the enclosed cover preventing personnel from contacting the high-speed rotating fan blades.

[0029] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and embodiments shown and described herein.

Claims

1. A wind-cooled coupled top-drive heat dissipation structure, characterized in that, include: An air-cooled motor, with a fan blade assembly fixed to the extension of its main shaft; The first gear oil cooler module is located on one side of the air-cooled motor shroud; Hydraulic oil radiator module, which is located on one side of the fan blade assembly; The fan blade assembly is configured to blow air toward the hydraulic oil radiator module.

2. The air-cooled coupled top-drive heat dissipation structure as described in claim 1, characterized in that, An air outlet is provided at the bottom of the air-cooled motor shroud.

3. The air-cooled coupled top-drive heat dissipation structure as described in claim 1, characterized in that, The rotation plane of the fan blade assembly faces the hydraulic oil radiator module, and the diameter of the fan blade covers the projection area of ​​the hydraulic oil radiator module.

4. The air-cooled coupled top-drive heat dissipation structure as described in claim 1, characterized in that, It also includes a second gear oil cooler module, which is integrated above or below the hydraulic oil cooler module, and the first gear oil cooler module and the second gear oil cooler module are connected in series. The rotation plane of the fan blade assembly is directly opposite the hydraulic oil radiator module and the second gear oil radiator module, and the diameter of the fan blades of the fan blade assembly covers the projection area of ​​the hydraulic oil radiator module superimposed on the second gear oil radiator module.

5. The air-cooled coupled top-drive heat dissipation structure as described in any one of claims 1 to 4, characterized in that, The gear oil radiator module and the hydraulic oil radiator module adopt finned tube heat exchangers, and the fin direction is parallel to the airflow direction.

6. The air-cooled coupled top-drive heat dissipation structure as described in claim 1, characterized in that, The spindle extension fan blade assembly is fixed to the spindle extension via a keyway or flange.

7. The air-cooled coupled top-drive heat dissipation structure as described in claim 1, characterized in that, Also includes: A heat dissipation shroud is located on the periphery of the first gear oil radiator module, and it is connected to the fan shroud of the air-cooled motor; The heat dissipation cover located around the fan blade assembly and hydraulic oil radiator module has an opening on the side facing the air-cooled motor. The opening is larger than the diameter of the fan blade of the fan blade assembly, and several ventilation holes are provided on this side. The side of the heat dissipation cover away from the air-cooled motor has a finned heat dissipation structure.

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