Large oil cooling device for offshore oil well

Abstract

The utility model discloses a large oil cooling device for an offshore oil well, which comprises a frame, a cooling component, a wind scooper and a radiating component, and the frame is mounted on a platform through bottom feet; the cooling assembly is composed of a pair of oil coolers which are welded and spliced through sealing strips, the wind scooper covers the cooling assembly and is divided into independent wind guiding areas through a partition plate, an air duct, a motor and a fan of the heat dissipation assembly are axially installed at an opening of the wind scooper, and a motor support is integrated in the air duct. The device solves the problem of manufacturing deformation of a large cooler through a split type cooler welding structure; the design of the integrated air duct bracket reduces the occupied space; a wind scooper isolation structure eliminates airflow interference, and efficient heat dissipation is achieved; electrophoresis of an oil cooler and electrophoresis and powder spraying treatment of other components enhance the corrosion resistance; all the components are detachably connected, installation and maintenance are convenient, and the requirements of an offshore platform for high efficiency, compactness and corrosion prevention of the oil cooling device are met.

Description

Technical Field

[0001] This utility model relates to the field of petroleum engineering technology, specifically to a large oil cooling device for offshore oil wells. Background Technology

[0002] Offshore oil well platforms, as the core operational sites for offshore oil development, are constrained by platform space limitations and stringent environmental requirements in terms of equipment layout and system design. Unlike onshore well sites, the process layout, structural strength, and stability of offshore platforms are strictly determined during the design phase based on the equipment installation locations, making later adjustments difficult. Against this backdrop, the large oil cooling systems mounted on the platforms must simultaneously meet multiple requirements, including "efficient heat dissipation," "compact and lightweight design," and "corrosion resistance." However, existing offshore oil cooling systems face structural problems in practical applications, such as the difficulty in manufacturing individual coolers, insufficient corrosion resistance, and low heat dissipation efficiency.

[0003] Existing technologies typically employ large, single-unit coolers to meet the heat dissipation requirements of large oil well equipment, increasing heat exchange area to improve performance. However, due to limitations in brazing equipment specifications, large single-unit coolers are prone to structural bending and unevenness during manufacturing. To compensate for insufficient strength, some solutions thicken the cooler base plate or add independent supports, but this further increases the equipment's size and weight, creating a conflict with the space constraints of offshore platforms. For the corrosive environment of offshore salt spray, existing systems generally employ zinc protection and surface plating as anti-corrosion measures. However, single coatings are prone to peeling under long-term salt spray erosion, and different components are not treated differently according to corrosion risk, resulting in a mismatch between anti-corrosion lifespan and the equipment's heat dissipation requirements. Traditional heat dissipation components (such as fans and motors) are often installed in a decentralized manner, with no zoning design inside the air guide shroud, leading to airflow mixing losses during flow. Motor supports and protective air ducts are independent components, requiring additional space for assembly. Moreover, the area and space of offshore platforms are extremely limited.

[0004] Therefore, the above problems urgently need to be solved. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a large oil cooling device for offshore oil wells. It solves the problem of deformation in the manufacturing of large single coolers by using a split-type cooler welding structure, resolves the contradiction of anti-corrosion space occupation by using an integrated air duct support design, and eliminates the airflow interference of dual fans by using an air guide shroud isolation structure. Thus, it achieves a unity of high heat dissipation efficiency, strong structural stability, excellent space utilization and long-term anti-corrosion reliability.

[0006] Technical Solution: This utility model provides a large oil cooling device for offshore oil wells, comprising a frame with feet at the bottom for platform installation; a cooling assembly mounted on the frame, including a pair of oil coolers joined together by sealing strip welding; an air guide shroud covering the cooling assembly, with a pair of openings at its upper end corresponding to the oil coolers; and a heat dissipation assembly including a pair of air ducts, a pair of motors, and fans connected to the output shafts of the motors. The air ducts are axially mounted on the air guide shroud and positioned above the openings, the motors are embedded within the air ducts, and the fans face the openings. Because this is a large oil cooling system with high heat dissipation requirements, the designed cooler size is inevitably large. However, brazing equipment cannot produce oil coolers suitable for such large units, and even if forced to weld, the resulting welds would be bent and uneven. Therefore, joining the two oil coolers together by sealing strip welding does not affect heat dissipation performance. The air guide shroud is positioned above the cooling components, with its upper opening corresponding to the oil cooler. Together with the air duct, motor, and fan axially mounted above the shroud opening, it enables directional ventilation. The fan's rotation generates airflow, which is precisely directed towards the oil cooler through the air duct and shroud opening, accelerating heat exchange and enhancing heat dissipation. The frame's bottom is equipped with feet for platform mounting, ensuring the entire oil cooling unit is securely installed on an offshore platform, adapting to complex marine environments and preventing easy swaying or displacement even in harsh conditions such as wind and waves, thus ensuring stable operation. The air duct also provides protection and corrosion resistance to the internal motor and fan.

[0007] Furthermore, in this application, a large oil cooling device for offshore oil wells includes a pair of coolers welded together to form a rectangle. Along the two long sides of the rectangle, a pair of upper mounting plates and a pair of lower mounting plates are welded to the upper and lower ends respectively. Several partition plates are vertically arranged between the mounting plates and the lower mounting plates, and the partition plates are spaced apart. The frame is detachably connected to the pair of oil coolers through the lower mounting plates, and the air guide shroud is detachably connected to the pair of oil coolers through the upper mounting plates.

[0008] Furthermore, in this application, a large oil cooling device for offshore oil wells includes an internal partition plate in the air guide shroud. This partition plate corresponds to a sealing strip and divides the air guide shroud into two independent air guide zones, each corresponding to an opening and an oil cooler. A pair of coolers are welded together to form a rectangle, with mounting plates at the upper and lower ends of the long side, providing a standardized interface for the connection between the oil cooler, frame, and air guide shroud. The frame is detachably connected to the oil cooler via the lower mounting plate, and the air guide shroud via the upper mounting plate. This design simplifies the installation process, enabling rapid and accurate component assembly, whether in factory prefabrication or on-site assembly on the offshore platform. The partition plate and internal structure of the cooler provide support and reinforcement, preventing deformation due to oil pressure, external vibration, or other factors.

[0009] Furthermore, in a large-scale oil cooling device for offshore oil wells disclosed in this application, a pair of support rods are radially installed inside the ventilation duct, and a motor bracket is mounted on the pair of support rods. The motor is mounted on the motor bracket. Since the motor also requires a separate mounting bracket, making a separate motor mounting bracket would occupy a significant amount of space and increase costs. Therefore, given the limited area and space on offshore platforms, the motor bracket and ventilation duct are integrated, reducing space waste. By radially installing support rods and a motor bracket inside the ventilation duct, the internal space of the ventilation duct is fully utilized, and the motor position is rationally arranged, allowing for a compact fit between the motor and components such as the fan and ventilation duct. This avoids occupying additional external space, achieving efficient heat dissipation component integration within a limited device space, and maintaining the compactness of the entire oil cooling device structure.

[0010] Furthermore, in a large oil cooling device for offshore oil wells disclosed in this application, the ventilation duct further includes a cylindrical shell and a radially extending flange. The flange is detachably mounted to the air guide shroud by bolts, and the motor is embedded within the cylindrical shell. The detachable bolt mounting of the flange to the air guide shroud simplifies the installation and disassembly of the ventilation duct and the air guide shroud. During the assembly of the oil cooling device, installers can quickly and accurately fix the ventilation duct to the air guide shroud; when maintenance or repair of the ventilation duct, motor, or air guide shroud is required, the ventilation duct can be quickly disassembled, significantly improving the convenience of installation and maintenance.

[0011] Furthermore, in a large oil cooling device for offshore oil wells disclosed in this application, a protective net is installed at the end of the cylindrical shell away from the flange. Under the influence of sea breezes, debris may be blown into the air duct, and the protective net can block these foreign objects from entering the air duct and causing them to entangle the fan blades, block airflow channels, or damage components such as motors, thus ensuring the normal operation of the heat dissipation components.

[0012] Furthermore, in a large oil cooling device for offshore oil wells described in this application, a rain cover is installed at the end of the motor furthest from the fan. The motor is a core component of the heat dissipation assembly; installing a rain cover at the end of the motor furthest from the fan effectively prevents rainwater from directly hitting the motor. This avoids rainwater entering the motor's interior, preventing the internal electrical components from becoming damp and short-circuiting, and ensuring the motor's normal electrical performance and operational stability.

[0013] Furthermore, in this application, a large oil cooling device for offshore oil wells includes a lifting ring on the side wall of the oil cooler. This facilitates lifting by hoisting equipment when the oil cooler needs inspection, maintenance, or replacement.

[0014] Furthermore, in this application, a large-scale oil cooling device for offshore oil wells includes an oil cooler surface treated with electrophoresis, and other components treated with a combination of electrophoresis and powder coating. The electrophoresis treatment on the oil cooler surface forms a uniform and dense paint film, effectively isolating the metal substrate from corrosive media such as seawater, salt spray, and humid air, significantly reducing the rate of metal corrosion and rust. The other components undergo electrophoresis and powder coating treatment; the underlying paint film formed by electrophoresis provides basic protection, while the powder coating further enhances the protective capabilities. This dual protection greatly improves the corrosion resistance of the components in harsh offshore environments, extending the equipment's service life.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0016] 1. The large oil cooling device for offshore oil wells described in this utility model adopts a split structure in which a pair of oil coolers are joined by sealing strip welding. This effectively avoids the structural bending and unevenness problems that are prone to occur during the brazing manufacturing process of large single oil coolers, and significantly improves manufacturing feasibility and structural stability. At the same time, combined with the design of the isolation plate inside the air guide shroud corresponding to the sealing strip, the air guide shroud is divided into two independent air guide zones, which are precisely aligned with the oil cooler below. This completely eliminates airflow interference and mixing loss during the operation of dual fans, thereby achieving high-efficiency heat dissipation performance of the cooling components while ensuring structural reliability.

[0017] 2. The large-scale oil cooling device for offshore oil wells described in this utility model integrates the motor bracket and the ventilation duct shell into a single design. Specifically, the support rod and motor bracket are radially installed inside the ventilation duct, and the ventilation duct flange is detachably connected to the air guide shroud. This significantly reduces the space occupied by traditional distributed installations and greatly improves the overall space utilization and compactness of the device. At the same time, by applying electrophoretic treatment to the surface of the oil cooler and applying a dual anti-corrosion treatment of electrophoresis and powder coating to the surfaces of other components, a differentiated and long-lasting protection system is formed, which effectively improves the long-term reliability and service life of the device in the salt spray corrosion environment at sea. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of a large oil cooling device for offshore oil wells according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a large oil cooling device for offshore oil wells after the heat dissipation components have been removed.

[0020] Figure 3 This is a second-view structural schematic diagram of a large oil cooling device for offshore oil wells according to this utility model;

[0021] Figure 4This is a schematic diagram of the structure of the ventilation duct combined with the protective net in a large oil cooling device for offshore oil wells according to this utility model;

[0022] Figure 5 This is a side view of the motor combined with a rain cover in a large oil cooling device for offshore oil wells according to this utility model.

[0023] Explanation of reference numerals in the instruction manual:

[0024] 1-Frame, 11-Feet;

[0025] 2-Cooling assembly, 21-Oil cooler, 211-Lifting ring, 22-Seal, 24-Upper mounting plate, 25-Lower mounting plate, 26-Divider plate;

[0026] 3-Air guide cover, 31-Opening, 32-Isolation plate;

[0027] 4-Heat dissipation component, 41-Air duct, 411-Support rod, 412-Motor bracket, 413-Cylindrical housing, 414-Flange edge, 415-Protective net, 42-Motor, 421-Rainproof cover, 43-Fan. Detailed Implementation

[0028] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] This embodiment provides a large-scale oil cooling device for offshore oil wells and its specific assembly scheme, the structure of which is as follows: Figure 1-5 As shown.

[0031] I. Installation of the overall frame and cooling components

[0032] The bottom of frame 1 is welded with base feet 11, which are bolted to the offshore platform base to ensure the horizontal stability of the device. Cooling assembly 2 consists of a pair of oil coolers 21 welded together into a rectangular structure using sealing strips 22. After welding, mounting plates 24 and lower mounting plates 25 are welded to the upper and lower ends of the two long sides of the rectangle, respectively. Several partition plates 26 are vertically arranged between the upper mounting plate 24 and the lower mounting plate 25, spaced apart, to enhance the structural strength of cooling assembly 2. Frame 1 is bolted to the oil coolers 21 via the lower mounting plate 25, while the air guide shroud 3 is detachably fixed to the oil coolers 21 via the upper mounting plate 24, achieving a stable installation of cooling assembly 2.

[0033] II. Integration of the air guide shroud and heat dissipation components

[0034] The air guide shroud 3 is positioned above the cooling assembly 2. Its internal isolation plate 32 is welded to the sealing strip 22, dividing the shroud 3 into two independent air guide zones. Each air guide zone has an opening 31 at its top, with each opening 31 corresponding to the position of the oil cooler 21 below. The air duct 41 of the heat dissipation assembly 4 consists of a cylindrical shell 413 and a radial flange 414. The flange 414 is bolted to the edge of the opening 31 of the air guide shroud 3. A pair of support rods 411 are radially installed inside the air duct 41. A motor bracket 412 is welded to the middle of the support rods 411. The motor 42 is bolted to the motor bracket 412, and its output shaft is connected to a fan 43, which faces the opening 31 of the air guide shroud 3. A protective net 415 is installed at the end of the cylindrical shell 413 away from the flange 414. A rain cover 421 is fitted onto the end of the motor 42 away from the fan 43 to prevent rainwater from entering the motor 42.

[0035] III. Auxiliary Structures and Corrosion Protection

[0036] The side wall of the oil cooler 21 is welded with lifting rings 211 to facilitate the lifting and transportation of the equipment. In terms of corrosion protection, the surface of the oil cooler 21 is coated with an electrophoretic process to form a protective film. The other components, such as the frame 1, the air guide shroud 3, and the air duct 41, are first treated with electrophoresis and then sprayed with an epoxy powder coating to form a double anti-corrosion system.

[0037] IV. Working Principle

[0038] When the device is running, the motor 42 drives the fan 43 to rotate, and the airflow enters the independent air guide zone of the air guide shroud 3 through the air duct 41. It is then blown directionally onto the surface of the oil cooler 21 through the opening 31, accelerating the heat exchange of the oil. The split-type cooler structure avoids the manufacturing deformation problems of large single coolers, the isolation plate 32 eliminates the airflow interference of the dual fans, and the integrated air duct support design reduces space occupation, meeting the needs of efficient heat dissipation and compact installation on offshore platforms.

[0039] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A large-scale oil cooling device for offshore oil wells, characterized in that: include: The frame (1) has feet (11) at the bottom for platform installation. Cooling assembly (2), which is mounted on frame (1) includes a pair of oil coolers (21), which are welded together by a seal (22); The air guide shroud (3) is placed above the cooling assembly (2). The upper end of the air guide shroud (3) has a pair of openings (31), which correspond one-to-one with the oil cooler (21). The heat dissipation assembly (4) includes a pair of air ducts (41), a pair of motors (42), and fans (43) connected to the output shafts of the motors (42). The air ducts (41) are axially mounted on the air guide shroud (3) and located above the opening (31). The motors (42) are embedded in the air ducts (41), and the fans (43) face the opening (31).

2. A large oil cooling device for offshore oil wells according to claim 1, characterized in that, After the pair of coolers (21) are welded together, they are rectangular. A pair of upper mounting plates (24) and a pair of lower mounting plates (25) are welded to the upper and lower ends of the two long sides of the rectangle, respectively. Several partition plates (26) are vertically arranged between the mounting plates (24) and the lower mounting plates (25). The partition plates (26) are spaced apart. The frame (1) is detachably connected to the pair of oil coolers (21) through the lower mounting plates (25). The air guide shroud (3) is detachably connected to the pair of oil coolers (21) through the upper mounting plates (24).

3. A large-scale oil cooling device for offshore oil wells according to claim 1, characterized in that, The air guide hood (3) is provided with an isolation plate (32) inside. The isolation plate (32) corresponds to the seal (22). The isolation plate (32) divides the air guide hood (3) into two independent air guide areas. The independent air guide areas correspond to the opening (31) and the oil cooler (21).

4. A large oil cooling device for offshore oil wells according to claim 1, characterized in that, A pair of support rods (411) are installed radially inside the air duct (41), and a motor bracket (412) is installed on the pair of support rods (411). The motor (42) is installed on the motor bracket (412).

5. A large oil cooling device for offshore oil wells according to claim 1, characterized in that, The air duct (41) also includes a cylindrical shell (413) and a radially extending flange (414), the flange (414) being detachably mounted on the air guide cover (3) by bolts, and the motor (42) being embedded in the cylindrical shell (413).

6. A large oil cooling device for offshore oil wells according to claim 5, characterized in that, A protective net (415) is installed at the end of the cylindrical shell (413) away from the flange edge (414).

7. A large oil cooling device for offshore oil wells according to claim 1, characterized in that, The end of the motor (42) away from the fan (43) is fitted with a rain cover (421).

8. A large oil cooling device for offshore oil wells according to claim 1, characterized in that, The oil cooler (21) has a lifting ring (211) on its side wall.

9. A large-scale oil cooling device for offshore oil wells according to any one of claims 1-8, characterized in that, The surface of the oil cooler (21) is treated with electrophoresis, and the surfaces of the other components are treated with electrophoresis and powder spraying.

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