Modularized assembly replacement system and method for heat exchange device of underwater platform

Abstract

A modular replacement system and method for heat exchange device of underwater platform, comprising a heat exchange core module group, a bearing guide and positioning locking assembly, a fluid isolation and interface reset assembly, a pumping and driving and transfer assembly, and a state monitoring and interlocking control assembly. The heat exchange core module group integrates multiple heat exchange modules, double-loop manifold assemblies and module side centralized interface assemblies into a maintenance unit that can be pumped and driven as a whole; the bearing guide and positioning locking assembly is used for module bearing, guiding, positioning and locking; the fluid isolation and interface reset assembly is used for double-loop isolation, pressure relief and liquid discharge, and interface seal recovery; the pumping and driving and transfer assembly is used for module whole removal, transfer and loading; and the state monitoring and interlocking control assembly is used for replacement determination and process safety control. The present application realizes the rapid replacement of the heat exchange device core module, reduces the maintenance disassembly workload, and improves the maintainability, reliability and task guarantee capability of the heat exchange device.

Description

Technical Field

[0001] This invention relates to the field of thermal management and equipment maintenance technology for underwater platforms, and in particular to a modular group replacement system and method for heat exchange devices on underwater platforms. Background Technology

[0002] Submersible platforms, during missions such as marine scientific research, resource exploration and development, and underwater surveying, typically carry propulsion equipment, power electronic equipment, life support equipment, hydraulic equipment, and other heat-loaded equipment. The continuous operation of these devices generates a significant amount of heat. If this heat cannot be dissipated in a timely manner, it can easily lead to overheating, performance degradation, or even malfunctions and shutdowns, affecting platform operational safety and mission continuity. Heat exchangers are usually located between the equipment's cooling water circuit and the seawater circuit to transfer heat from the platform's interior to the external seawater. Their heat exchange performance, structural reliability, sealing reliability, and ease of maintenance directly impact the stable operation of the submersible platform's thermal management system.

[0003] Existing underwater platform heat exchangers are typically assembled from a heat exchange core, shell, manifold, and connection interfaces, and are fixedly installed inside the tank via piping, supports, and fasteners. These devices primarily consider pressure resistance, corrosion resistance, sealing, and heat exchange performance, but lack sufficient consideration for rapid disassembly and assembly of heat exchange units, fault replacement, and multi-module group replacement. During long-term service, heat exchangers may experience problems such as flow channel blockage, decreased heat exchange capacity, increased pressure drop, or media leakage due to impurity deposition, biofouling, scaling, corrosion, seal aging, or localized damage. When online cleaning or routine maintenance fails to restore performance, disassembly, repair, or replacement of the heat exchanger is necessary.

[0004] Before disassembling existing heat exchangers, it is typically necessary to isolate, depressurize, and drain the seawater and cooling water circuits, and remove connecting pipes, supporting structures, and fasteners. After reinstallation, further adjustments are required, including repositioning, interface docking, locking, and sealing restoration. Due to the lack of a suitable structure for the overall support, guided extraction, positioning, locking, and transport of multiple heat exchange modules, existing systems struggle to achieve the overall removal and installation of multiple heat exchange modules. Under the constraints of limited space and compact equipment layout within underwater platform cabins, disassembly and assembly become even more difficult, resulting in a large workload, long maintenance cycles, and unreliable interface repositioning and sealing restoration.

[0005] Several technical solutions related to thermal management systems for submersibles or deep-sea manned platforms have been disclosed in the prior art. For example, CN202911939U discloses a temperature regulation device for submersibles. This device connects a water tank located outside the submersible hull to a heat exchanger located inside the hull, utilizing heat exchange between seawater and the heat exchange medium to cool the air inside the cabin. This solution mainly addresses the issues of temperature regulation and cooling energy consumption inside the submersible cabin, but it does not further consider the modular disassembly and assembly of the heat exchange unit after long-term service, the rapid replacement of faulty units, the reset of fluid interfaces, and the group replacement within confined spaces.

[0006] For example, CN108826802B discloses a cooling water system for a deep-sea manned platform. This system includes an external cooling circuit, an internal cooling circuit, an intermediate heat exchanger, an electrically operated shut-off valve, and a pressure balancing device. By setting up mutually isolated cooling circuits and a pressure balancing structure, the safety of the deep-sea manned platform's cooling water system is improved. This solution mainly focuses on the circuit configuration, pressure balancing, and safe heat exchange of the cooling system. It does not specifically design the modular assembly structure of the intermediate heat exchanger itself, nor the structures required for fluid isolation, pressure relief and drainage, guided extraction, positioning and locking, interface reset, and safe transfer during the disassembly and assembly of the heat exchange modules.

[0007] Furthermore, in the field of general heat exchangers, CN102414531A discloses a modular plate-shell heat exchanger, which arranges multiple heat transfer plates inside the shell and connects them to the main pipe via a detachable connection structure, allowing the heat transfer plates to be removed from the shell for inspection or replacement. This solution improves the ease of maintenance for the internal heat transfer elements of ordinary industrial heat exchangers, but it primarily addresses the disassembly and maintenance of the heat transfer elements inside the heat exchanger shell. It does not fully consider special requirements such as limited space within the underwater platform cabin, the need for separate isolation between the seawater circuit and the equipment cooling water circuit, the presence of residual pressure and residual media in the pipelines, the large mass of the heat exchange module, and the need for reliable restoration of the interface sealing state after reinstallation.

[0008] In general, the existing technologies mentioned above have proposed corresponding solutions from the aspects of cabin temperature regulation, cooling circuit safety design or modular maintenance of heat exchange components. However, there is still a lack of a systematic group replacement solution for heat exchange devices on underwater platforms. It is difficult to simultaneously meet the requirements of overall load-bearing of multiple heat exchange modules, centralized connection of dual circuits, guided extraction in confined space, safe transportation during disassembly and assembly, and positioning, locking and sealing reset after reinstallation.

[0009] The existing technology has the following main shortcomings: First, existing underwater platform heat exchange devices mainly focus on heat exchange performance, pressure resistance, corrosion resistance, and cooling circuit safety, but do not adequately consider modular disassembly and assembly after long-term service of the heat exchange unit, or the replacement of multiple heat exchange modules in groups. It is difficult to remove or install multiple heat exchange modules as a whole as an independent maintenance unit. Second, maintenance of the heat exchange device usually requires the separate removal of the connecting pipes, mounting supports, fasteners, and related accessories on the seawater side and the equipment cooling water side, as well as fluid isolation, depressurization, and drainage. The operation steps are numerous and the maintenance cycle is long, which is not conducive to rapid maintenance under the conditions of limited space and compact equipment layout in the underwater platform. Third, existing modular heat exchangers usually focus on a single heat transfer element or internal The detachable design of the heat exchange components lacks coordination between the core heat exchange module group, the load-bearing guide and positioning locking structure, the fluid isolation and interface reset structure, and the extraction drive and transfer structure. This makes it difficult to ensure the continuity and reliability of the heat exchange module removal, transfer, reinstallation, and interface restoration process. Fourth, existing heat exchange devices usually lack comprehensive detection and interlocking control of operating status, fluid isolation status, residual pressure status, module position, interface connection status, and locking status. This makes it difficult to implement on-demand replacement according to the actual status of the heat exchange device, and it is also difficult to prevent subsequent operations from being carried out without completing loop isolation, pressure relief and drainage, positioning, or locking. This increases the risk of media leakage, module detachment, interface damage, and seal failure. Summary of the Invention

[0010] To address the shortcomings of the existing technology, a modular replacement system and method for underwater platform heat exchangers is provided. This system integrates multiple heat exchange modules, dual-loop manifolds, and centralized interfaces into a single, extractable core heat exchange module group. It is equipped with functions such as load-bearing guidance and positioning locking, fluid isolation and interface reset, extraction drive and safe transport, and status monitoring and interlocking control. This enables loop isolation and pressure relief before replacement of the core heat exchange module group, guided extraction, stable load bearing and safe transport during replacement, and accurate positioning, reliable locking and seal restoration after reinstallation. This reduces on-site pipeline disassembly and manual adjustment, enabling rapid, safe, and reliable replacement of faulty core heat exchange modules, and improving the maintainability, operational reliability, and mission support capabilities of underwater platform heat exchangers.

[0011] The technical solution adopted in this invention is as follows: A modular assembly replacement system for an underwater platform heat exchanger includes a heat exchange core module group, a load-bearing guide and positioning locking assembly, a fluid isolation and interface reset assembly, and an extraction drive and transfer assembly. The heat exchange core module group includes a module support frame, multiple heat exchange modules, a dual-loop current collection assembly, and a module-side centralized interface assembly. Multiple heat exchange modules are fixed within the module support frame using a unified installation reference. A detachable load-bearing connection structure is used between the module support frame and the fixed support frame, allowing the multiple heat exchange modules and the module support frame to form a modular assembly heat exchange unit that can be moved out, transferred, and installed as a whole. The dual-loop current collection assembly is respectively connected to… The seawater-side flow channels and equipment cooling water-side flow channels of multiple heat exchange modules are connected to centrally distribute and collect the seawater-side fluid and equipment cooling water-side fluid of multiple heat exchange modules; the dual-loop flow collection assembly enables multiple heat exchange modules to share the seawater-side interface and the equipment cooling water-side interface, and connects to the module-side centralized interface assembly, so that the heat exchange core module group forms a single modular heat exchange unit with a unified fluid connection interface; the module-side centralized interface assembly is set at the interface end of the modular grouped heat exchange unit and connects to the dual-loop flow collection assembly, so as to integrate the fluid interfaces of multiple heat exchange modules into a centralized interface corresponding to the seawater loop and the equipment cooling water loop; The load-bearing guidance and positioning locking assembly includes a fixed load-bearing frame, a pull-out guide mechanism, an anti-detachment limiting mechanism, and a positioning locking mechanism. The fixed load-bearing frame is used to install on the basic structure inside the underwater platform compartment and to support the modular heat exchange units. The pull-out guide mechanism cooperates with the modular load-bearing frame to limit the movement of the modular heat exchange units along a predetermined direction. The anti-detachment limiting mechanism is used to limit offset and detachment during movement. The positioning locking mechanism is used to achieve position correction and fixation after the modular heat exchange units are installed in place. The fluid isolation and interface reset assembly includes a fluid interface assembly, a dual-loop isolation assembly, a pressure relief and drainage assembly, and a seal compensation and reset assembly. The dual-loop isolation assembly is installed in the seawater loop and the equipment cooling water loop respectively, and is used to isolate the two fluid loops during the replacement of the modular heat exchange unit. The pressure relief and drainage assembly is used to release the residual pressure after isolation and discharge the residual medium. The seal compensation and reset assembly is used to compensate for the interface deviation during the module installation process and restore the sealed connection between the module-side centralized interface assembly and the fixed-side interface. The extraction drive and transfer assembly includes an extraction drive mechanism, a transfer bearing mechanism, a track connection adjustment mechanism, and a safety braking locking mechanism. It is used to drive the modular grouped heat exchange units to move out or be loaded along the extraction guide mechanism as a whole, and to carry, transfer, and lock them after they are removed from the fixed bearing frame.

[0012] As a further improvement to the above technical solution: Multiple heat exchange modules are installed in parallel, array, or partitioned arrangements within the module support frame. Each heat exchange module is connected to the module support frame through a unified installation interface, enabling the module support frame to bear the overall load of multiple heat exchange modules.

[0013] The dual-loop manifold assembly includes a seawater-side manifold channel and an equipment cooling water-side manifold channel; wherein: the seawater-side manifold channel is used for the distribution and collection of seawater fluid from multiple heat exchange modules; the equipment cooling water-side manifold channel is used for the distribution and collection of equipment cooling water fluid from multiple heat exchange modules.

[0014] The extraction and installation guiding mechanism includes at least one of linear guide rails, grooving guide rails, or roller guide rails; the anti-detachment limiting mechanism includes at least one of limiting blocks, limiting grooves, and guiding constraint structures; the positioning and locking mechanism includes at least one of positioning pins, conical positioning structures, wedge-tightening structures, and locking mechanisms.

[0015] The fluid interface assembly includes a module-side interface and a fixed-side interface; the module-side interface and the fixed-side interface adopt a plug-in type, end-face compression type or radial sealing type connection structure.

[0016] The extraction drive mechanism includes at least one of a screw drive mechanism, an electric push rod mechanism, a hydraulic drive mechanism, or a traction drive mechanism; the track connection adjustment mechanism is used to adjust the positional relationship between the extraction path of the fixed support frame and the transfer path of the transfer support mechanism.

[0017] It also includes a condition monitoring and interlocking control component; the condition monitoring and interlocking control component includes an operating parameter monitoring component, a replacement determination module, a replacement status detection component, and an interlocking controller; the replacement determination module is used to determine whether the modular grouped heat exchange unit meets the replacement conditions based on one or more parameters among heat exchange efficiency, pressure drop, flow rate, and leakage status.

[0018] The interlock controller is configured with the following safety interlock logic: Positioning lock release is prohibited until dual-circuit isolation is complete; module extraction is prohibited until pressure relief and drainage are complete; fluid connection restoration is prohibited until positioning lock is complete; flow restoration is prohibited until sealing status confirmation is complete; and replacement completion is prohibited until operational status verification is complete.

[0019] A method for modular group replacement of heat exchange devices for underwater platforms includes the following steps: S1. Collect the operating status parameters of the heat exchange core module group through the status monitoring and interlocking control components, and determine whether the heat exchange core module group meets the replacement conditions based on the heat exchange performance, flow state and safety status. S2. When a safety fault condition of the heat exchange core module group is detected, the replacement is executed directly; when a performance degradation condition is detected, the decision to execute the replacement is made based on the combination of decreased heat exchange efficiency, increased pressure drop, and abnormal flow rate; the replacement control command is generated through the interlock controller, and the interface connection status, installation status, and locking status of the heat exchange core module group are confirmed. S3. The seawater circuit and the equipment cooling water circuit are isolated by the dual-loop isolation component in the fluid isolation and interface reset component, and the residual pressure inside the heat exchange core module group is released and the residual medium is discharged by the pressure relief and drainage component. S4. After completing fluid isolation and pressure relief, disconnect the module-side centralized interface component from the fixed-side interface through the fluid interface component, and release the locking state of the heat exchange core module group through the positioning locking mechanism. S5. Drive the heat exchange core module group to move out as a whole along the extraction guide mechanism in the load-bearing guide and positioning locking assembly through the extraction drive mechanism in the extraction drive and transfer assembly. S6. The heat exchange core module group is carried out by the transfer and bearing mechanism, and the stable transfer is completed by the track connection adjustment mechanism and the safety braking and locking mechanism. S7. The replaced heat exchange core module group is installed into the fixed support frame along the extraction guide mechanism, and the position is adjusted and locked by the positioning and locking mechanism. S8. Restore the connection between the centralized interface component on the module side and the fixed interface by using the fluid interface component, and compensate for the interface deviation by using the seal compensation reset component to achieve fluid connection seal restoration; S9. Restore the operation of the seawater circuit and the equipment cooling water circuit. Detect the installation status, interface connection status, locking status, sealing status, and operating status of the heat exchange core module group through the status monitoring and interlocking control components. After meeting the preset requirements, determine that the replacement of the heat exchange core module group is complete.

[0020] As a further improvement to the above technical solution: If an abnormality in sealing, pressure difference, flow rate, or outlet temperature is detected after resuming operation, the safety interlock status is maintained, and at least one of the following operations is performed: repositioning, relocking, resealing, or reverification.

[0021] The beneficial effects of this invention are as follows: (1) To realize the modular group replacement of multiple heat exchange modules. By integrating multiple heat exchange modules, dual-loop current collection components and module-side centralized interface components into a heat exchange core module group that can be extracted and installed as a whole through the module support frame, the heat exchange modules and their connecting pipelines are removed one by one, which can significantly reduce the on-site disassembly and assembly steps and improve the modularity and replacement efficiency of the heat exchange device.

[0022] (2) Improve the disassembly and transfer capabilities in confined spaces. Through the coordinated operation of the fixed support frame, the extraction and guide mechanism, the positioning and locking mechanism, the extraction and drive mechanism and the transfer support mechanism, the heat exchange core module group can be smoothly extracted or installed along a predetermined path, and maintain reliable support, guidance and locking during extraction and transfer, thereby reducing the maintenance difficulty under the conditions of small space and compact equipment layout in the underwater platform cabin.

[0023] (3) Improve the reliability of dual-circuit isolation and interface seal reset. By isolating, depressurizing and draining the seawater circuit and the equipment cooling water circuit respectively, the risk of disassembly under pressure and leakage of residual media can be reduced; by using a centralized interface and seal compensation reset structure, the positional deviation during module installation can be compensated, improving the interface docking accuracy and the sealing reliability after reinstallation.

[0024] (4) Enable on-demand replacement of the heat exchange core module group. By monitoring operating parameters such as temperature, pressure, flow rate, differential pressure, leakage and heat exchange performance, and combining direct judgment of safety faults and combined judgment of performance degradation, the fault status and performance degradation of the heat exchange core module group can be identified in a timely manner, avoiding excessive maintenance based solely on fixed cycles or passive repair after a fault occurs.

[0025] (5) Improve the safety of the replacement process and the reliability of system recovery. By detecting and interlocking the fluid isolation, residual pressure, module position, track connection, interface connection and positioning and locking status, subsequent operations can be restricted if the preconditions are not met; after replacement, the sealing status and operating parameters are checked, and corrective operations such as repositioning, relocking or sealing restoration are performed in case of abnormality, thereby reducing the risk of misoperation, module detachment, interface damage and media leakage, and improving the operational reliability and mission support capability of the underwater platform heat exchange device.

[0026] In summary, this invention, through the coordinated operation of the heat exchange core module group, the load-bearing guiding and positioning locking assembly, the fluid isolation and interface reset assembly, the extraction driving and transfer assembly, and the status monitoring, judgment, and interlocking control assembly, achieves group integration, status judgment, loop isolation, pressure relief and fluid drainage, guided extraction, safe transfer, positioning and locking, interface sealing reset, and operational recovery of the heat exchange module. This reduces the need for pipeline disassembly, component disassembly and assembly, and on-site adjustment during heat exchange device maintenance. It solves the problems of existing heat exchange devices, such as difficult disassembly and assembly in confined spaces, long maintenance cycles, inconvenient transfer, insufficient interface reset reliability, and inadequate safety control during replacement. This improves the replacement efficiency, maintenance safety, sealing reliability, and operational recovery capability of the heat exchange device, enhancing the operational reliability and mission continuity assurance capability of the underwater platform thermal management system. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall structure of the modular group replacement system for the heat exchange device of an underwater platform according to the present invention.

[0028] Figure 2 This is a schematic diagram of the heat exchange core module group, the load-bearing guide and positioning locking component, and the fluid interface connection structure of the present invention.

[0029] Figure 3 This is a schematic diagram of the modular group replacement method for the heat exchange device of an underwater platform according to the present invention.

[0030] In the picture: 11. Heat exchange core module group; 111. Module support frame; 112. Heat exchange module; 113. Dual-loop current collection assembly; 114. Module-side centralized interface assembly; 12. Bearing guide and positioning locking assembly; 121. Fixed support frame; 122. Pull-out guide mechanism; 123. Anti-detachment limiting mechanism; 124. Positioning and locking mechanism; 13. Fluid isolation and interface reset assembly; 131. Fluid interface assembly; 132. Dual-loop isolation assembly; 133. Pressure relief and drainage assembly; 134. Sealing compensation and reset assembly; 14. Slip-on drive and transfer components; 141. Extraction and loading drive mechanism; 142. Transfer and bearing mechanism; 143. Track connection and adjustment mechanism; 144. Safety braking and locking mechanism; 15. Status monitoring and interlocking control components; 151. Operating parameter monitoring component; 152. Replacement of judgment module; 153. Replacement of status detection component; 154. Interlock controller; 16. Seawater return circuit; 17. Equipment cooling water circuit. Detailed Implementation

[0031] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] This embodiment provides a modular group replacement system for an underwater platform heat exchange device. The system integrates multiple heat exchange modules 112, a dual-loop flow collection assembly 113, and a module-side centralized interface assembly 114 into a module support frame 111, forming a heat exchange core module group 11 that can be extracted and installed as a whole. Combined with a support guide and positioning locking assembly 12, a fluid isolation and interface reset assembly 13, an extraction drive and transfer assembly 14, and a status monitoring, judgment, and interlock control assembly 15, the system realizes status judgment, loop isolation, pressure relief and drainage, guided extraction, stable transfer, positioning and locking, interface reset, and safety interlock control during the replacement process of the heat exchange core module group 11.

[0033] The above structure reduces the need for pipe disassembly, component replacement, and on-site adjustment during heat exchanger maintenance, improves the disassembly and assembly efficiency, interface reset reliability, and maintenance safety of the heat exchanger core module group 11, and meets the requirements for rapid and reliable maintenance and continuous mission support of heat exchangers under the limited space conditions of underwater platform equipment compartments.

[0034] like Figure 1 As shown, this embodiment provides a modular group replacement system for an underwater platform heat exchange device, which mainly includes a heat exchange core module group 11, a load-bearing guide and positioning locking assembly 12, a fluid isolation and interface reset assembly 13, an extraction drive and transfer assembly 14, and a status monitoring and interlocking control assembly 15.

[0035] The heat exchange core module group 11 is the core component for realizing heat exchange functions and overall replacement. It includes a module support frame 111, multiple heat exchange modules 112, a dual-loop flow collector assembly 113, and a module-side centralized interface assembly 114. Multiple heat exchange modules 112 are installed within the module support frame 111 according to a predetermined arrangement, forming independent modular units, allowing multiple heat exchange modules 112 to be extracted, transported, and installed as a whole. The seawater-side flow channel and the equipment cooling water-side flow channel of each heat exchange module 112 are respectively connected to the dual-loop flow collector assembly 113, enabling fluid collection and distribution among the multiple heat exchange modules 112. The module-side centralized interface assembly 114 is located at the interface end of the heat exchange core module group 11 and is used to connect to the fixed-side fluid interface, realizing the centralized connection of the seawater loop 16 and the equipment cooling water loop 17.

[0036] The load-bearing guide and positioning locking assembly 12 is used to load, guide, position, and fix the heat exchange core module group 11 during installation. It includes a fixed support frame 121, a pull-out guide mechanism 122, an anti-detachment limiting mechanism 123, and a positioning locking mechanism 124. The fixed support frame 121 is fixedly installed on the mounting base inside the underwater platform compartment and is used to support the heat exchange core module group 11. The pull-out guide mechanism 122 is arranged along the pull-out direction of the heat exchange core module group 11 and is used to guide the heat exchange core module group 11 to move along a predetermined path. The anti-detachment limiting mechanism 123 is used to limit the lateral displacement, overturning, or detachment of the heat exchange core module group 11 from the guide path during movement. The positioning locking mechanism 124 is used to correct, limit, and lock the heat exchange core module group 11 after it is installed in the predetermined position, ensuring the structural stability of the module during operation.

[0037] The fluid isolation and interface reset assembly 13 is used to achieve fluid isolation, pressure release, and interface restoration during the replacement of the heat exchange core module group 11. It includes a fluid interface assembly 131, a dual-loop isolation assembly 132, a pressure relief and drainage assembly 133, and a seal compensation and reset assembly 134. The fluid interface assembly 131 includes a module-side interface on the heat exchange core module group 11 and a fixed-side interface connected to the platform's fixed pipeline, used to achieve fluid connection between the heat exchange core module group 11 and the seawater circuit 16 and the equipment cooling water circuit 17. The dual-loop isolation assembly 132 is respectively installed on the seawater circuit 16 and the equipment cooling water circuit 17, used to cut off the corresponding fluid passages before disassembly of the heat exchange core module group 11. The pressure relief and drainage assembly 133 is used to release residual pressure within the isolation area and discharge residual media. The seal compensation and reset assembly 134 is used to compensate for positional deviations and assembly errors during the interface docking process, and to restore a reliable sealed connection after the heat exchange core module group 11 is reinstalled.

[0038] The extraction drive and transfer assembly 14 is used to realize the overall removal, transfer, and reinstallation of the heat exchange core module group 11. It includes an extraction drive mechanism 141, a transfer bearing mechanism 142, a track connection adjustment mechanism 143, and a safety braking and locking mechanism 144. The extraction drive mechanism 141 is connected to the heat exchange core module group 11 and is used to provide driving force along the extraction direction, so that the heat exchange core module group 11 is moved out or installed along the extraction guide mechanism 122. The transfer bearing mechanism 142 is used to bear and transfer the heat exchange core module group 11 after it is separated from the fixed bearing frame 121. The track connection adjustment mechanism 143 is used to adjust the positional relationship between the extraction path and the transfer path so that the heat exchange core module group 11 can transition smoothly. The safety braking and locking mechanism 144 is used to brake and lock the heat exchange core module group 11 during extraction and transfer to prevent the module movement from going out of control due to interruption of driving force or abnormal position.

[0039] The status monitoring, judgment, and interlocking control component 15 is used to realize status identification, replacement judgment, and safety control of the replacement process of the heat exchange core module group 11. It includes an operating parameter monitoring component 151, a replacement judgment module 152, a replacement status detection component 153, and an interlocking controller 154. The operating parameter monitoring component 151 is used to collect temperature, pressure, flow rate, differential pressure, leakage status, and heat exchange performance parameters during the operation of the heat exchange device. The replacement judgment module 152 is used to determine whether the heat exchange core module group 11 meets the replacement conditions based on changes in operating parameters. Among them, safety faults are judged directly, and performance degradation status is judged comprehensively based on a combination of multiple parameters. The replacement status detection component 153 is used to detect fluid isolation status, residual pressure status, module position status, interface connection status, and positioning and locking status. The interlocking controller 154 controls operations such as isolation, depressurization, extraction, transfer, interface reset, and locking based on the detection results, and restricts the execution of subsequent operations when the preconditions are not met.

[0040] Through the above structure, this embodiment can integrate multiple heat exchange modules 112 into a replaceable heat exchange core module group 11. Based on the status monitoring and judgment, it can complete loop isolation, pressure relief and liquid drainage, module extraction and installation, transportation and installation, and interface sealing restoration, so as to realize the rapid, safe and reliable maintenance of the underwater platform heat exchange device under confined space conditions, and improve the maintainability, operational reliability and mission support capability of the heat exchange device.

[0041] like Figure 2 As shown, in this embodiment, the heat exchange core module group 11 adopts a modular group structure, including a module support frame 111, multiple heat exchange modules 112, a dual-loop current collection assembly 113, and a module-side centralized interface assembly 114.

[0042] The module support frame 111 serves as the main support structure for the heat exchange core module group 11, providing unified support and fixation for multiple heat exchange modules 112. The multiple heat exchange modules 112 are arranged in parallel, in an array, or in zones within the module support frame 111, depending on heat exchange capacity requirements and installation space conditions. Each heat exchange module 112 is connected to the module support frame 111 through a unified installation reference and a unified installation interface, forming a stable structural connection between the multiple heat exchange modules 112 and the module support frame 111.

[0043] Furthermore, multiple heat exchange modules 112, a module support frame 111, a dual-loop current collector assembly 113, and a module-side centralized interface assembly 114 together constitute a modular grouped heat exchange unit. The module support frame 111 is used to bear the structural loads of multiple heat exchange modules 112 during operation, extraction, and transportation, enabling multiple heat exchange modules 112 to be moved and maintained as a whole unit, avoiding the problem of needing to disassemble multiple heat exchange components and connecting accessories separately during the maintenance of traditional heat exchange devices.

[0044] Multiple heat exchange modules 112 are each equipped with a seawater-side flow channel and an equipment cooling water-side flow channel, and are respectively connected to a dual-loop manifold assembly 113. The dual-loop manifold assembly 113 includes a seawater-side manifold channel and an equipment cooling water-side manifold channel. The seawater-side manifold channel is used to centrally distribute external seawater to the seawater-side flow channels of each heat exchange module 112 and collect the seawater after heat exchange. The equipment cooling water-side manifold channel is used to centrally distribute equipment cooling water to the equipment cooling water-side flow channels of each heat exchange module 112 and collect the equipment cooling water after heat exchange.

[0045] By setting up a dual-loop manifold assembly 113, multiple heat exchange modules 112 share a seawater-side fluid interface and a cooling water-side fluid interface, transforming the originally independent fluid channels of the multiple heat exchange modules 112 into a unified fluid connection interface for modular heat exchange units. The dual-loop manifold assembly 113 is not only used for centralized distribution and collection of fluids among multiple heat exchange modules 112, but also works with the module support frame 111 and the module-side centralized interface assembly 114 to form an integrated maintenance unit with a unified load-bearing relationship and a unified fluid connection relationship among the multiple heat exchange modules 112, thereby realizing the overall extraction, transfer, and installation of the heat exchange core module group 11.

[0046] The module-side centralized interface component 114 is located on one side of the heat exchange core module group 11 and is connected to the dual-loop manifold component 113, used to realize centralized connection between the heat exchange core module group 11 and the external seawater loop 16 and the equipment cooling water loop 17. The module-side centralized interface component 114 is correspondingly set with the platform fixed-side fluid interface. When the heat exchange core module group 11 moves to the predetermined installation position along the extraction guide mechanism 122, the module-side centralized interface component 114 and the fixed-side fluid interface are docked, and the fluid connection is restored and the interface seal is maintained through the fluid isolation and interface reset component 13.

[0047] Furthermore, the heat exchange core module group 11 is connected to the platform mounting base via the load-bearing guide and positioning locking assembly 12. The fixed support frame 121 is used to support the modular grouped heat exchange units, and the module support frame 111 and the fixed support frame 121 adopt a separable load-bearing connection structure; the extraction guide mechanism 122 is set on the fixed support frame 121 and cooperates with the module support frame 111 to limit the movement direction of the modular grouped heat exchange units, so that they can be extracted and installed as a whole along a predetermined path.

[0048] The anti-detachment limiting mechanism 123 is used to limit the lateral displacement, overturning or detachment from the guide path during the movement of the heat exchange core module group 11; the positioning and locking mechanism 124 is used to perform position correction and locking of the modular heat exchange unit after the heat exchange core module group 11 is installed in place, so as to ensure the structural stability of the heat exchange core module group 11 in the operating state.

[0049] Through the above structure, multiple heat exchange modules 112 form a unified load-bearing relationship through a unified installation benchmark, a unified fluid connection relationship through a dual-loop flow collector assembly 113, and a unified interface connection relationship through a module-side centralized interface assembly 114. This makes the heat exchange core module group 11 a modular grouped heat exchange unit that can be completely disassembled, replaced, and reinstalled relative to the platform installation foundation and external connection interfaces. During the replacement process, through fluid isolation, interface release, locking release, and guided extraction operations, the modular grouped heat exchange unit can be moved out as a whole along the extraction guide mechanism 122. After the replacement is completed, it is repositioned, locked, and reset, improving the maintenance efficiency, interface reset reliability, and operational stability of the underwater platform heat exchange device under confined space conditions.

[0050] like Figure 3 As shown, this embodiment also provides a modular group replacement method for an underwater platform heat exchange device, which is implemented using the above-mentioned modular group replacement system, and specifically includes the following steps: S1. The temperature, pressure, flow rate, differential pressure, leakage status, and heat exchange performance parameters of the heat exchange core module group 11 during operation are obtained through the status monitoring and interlocking control component 15, and the replacement conditions of the heat exchange core module group 11 are determined based on the monitoring results. When a fault condition affecting operational safety is detected, replacement is directly determined; when performance degradation occurs, such as decreased heat exchange performance, increased pressure drop, or abnormal operating parameters, a comprehensive judgment is made based on the changes in multiple parameters.

[0051] S2. When the heat exchange core module group 11 meets the preset replacement conditions, the interlock controller 154 generates a replacement control command and confirms the fluid isolation status, module position status and interface connection status during the replacement process to ensure that subsequent operations are performed under safe conditions.

[0052] S3. The seawater circuit 16 and the equipment cooling water circuit 17 are shut off by the fluid isolation and interface reset assembly 13, so that the heat exchange core module group 11 to be replaced is isolated from the external fluid system. Then, the residual pressure inside the module and the connecting pipe section is released by the pressure relief and drainage assembly 133, and the residual medium is discharged.

[0053] S4. After confirming that fluid isolation and pressure relief have been completed, disconnect the connection between the module-side centralized interface assembly 114 and the fixed-side fluid interface, and release the locking state of the heat exchange core module group 11 through the positioning locking mechanism 124, so that it is in a removable state.

[0054] S5. The heat exchange core module group 11 is driven by the extraction drive mechanism 141, so that it is moved out of the fixed support frame 121 as a whole along the extraction guide mechanism 122 in a predetermined direction; during the movement, the anti-detachment limit mechanism 123 limits the risk of module displacement and detachment.

[0055] S6. After the heat exchange core module group 11 is detached from the fixed support frame 121, it is carried and transferred by the transfer support mechanism 142, and the positional relationship between the extraction path and the transfer path is adjusted by the track connection adjustment mechanism 143; the safety braking locking mechanism 144 is used to ensure the stability during the transfer process.

[0056] S7. The spare heat exchange core module group 11 is installed into the fixed support frame 121 along the extraction guide mechanism 122. The module position is adjusted, limited and locked by the positioning and locking mechanism 124, so that it is restored to the predetermined installation position.

[0057] S8. The module-side centralized interface component 114 is reconnected to the fixed-side fluid interface through the fluid interface component 131, and the interface installation deviation is compensated by the sealing compensation reset component 134 to achieve a reliable sealed connection between the seawater circuit 16 and the equipment cooling water circuit 17.

[0058] S9. After completing the interface reset, the module position, interface connection, locking status and sealing status are detected by replacing the status detection component 153, and the seawater circuit 16 and equipment cooling water circuit 17 are restored to operation. When the operating parameters meet the preset requirements, it is determined that the heat exchange core module group 11 has been replaced and the system has resumed normal operation.

[0059] During the replacement process, the status monitoring and interlocking control component 15 is equipped with safety interlocking control logic to detect and control critical states during the replacement of the heat exchange core module group 11. The safety interlocking control logic includes: prohibiting the release of the positioning locking mechanism 124 before the isolation of the seawater circuit 16 and the equipment cooling water circuit 17 is completed; prohibiting the extraction and installation of the heat exchange core module group 11 before pressure relief and drainage are completed; prohibiting the locking and fixing operation before the heat exchange core module group 11 is positioned; prohibiting the restoration of flow through the seawater circuit 16 and the equipment cooling water circuit 17 before confirming the fluid interface connection and sealing status; and prohibiting the determination that the replacement of the heat exchange core module group 11 is complete before verifying the post-replacement operating parameters. Through the above interlocking control, misoperation during the replacement process can be avoided, improving the safety and reliability of the overall replacement process of the heat exchange core module group 11.

[0060] Through the above structure and method, the present invention realizes the overall export, overall transfer, overall import and interface reset of the heat exchange core module group 11 in the confined space of the underwater platform, which reduces the disassembly of pipelines, the replacement of components in a decentralized manner and the on-site adjustment operations during the maintenance of traditional heat exchange devices, shortens the maintenance cycle, and improves the maintainability of heat exchange devices, the reliability of interface connections and the mission support capability.

[0061] This invention integrates multiple heat exchange modules 112, a dual-loop current collection assembly 113, and a module-side centralized interface assembly 114 into a heat exchange core module group 11, enabling the multiple heat exchange modules 112 to form an independent maintenance unit. Compared to traditional integral or semi-integral heat exchange devices, this invention eliminates the need to disassemble multiple heat exchange modules 112 and peripheral connecting components one by one. The entire heat exchange core module group 11 can be replaced simply by using the extraction drive and transfer assembly 14, reducing maintenance workload and improving replacement efficiency.

[0062] This invention uses a status monitoring and interlocking control component 15 to comprehensively monitor the operating parameters and replacement process status of the heat exchange device. It can obtain information such as temperature, pressure, flow rate, differential pressure, leakage status and heat exchange performance, and make comprehensive judgments based on safety fault status and performance degradation status, so as to realize the on-demand replacement of the heat exchange core module group 11, avoiding over-maintenance caused by fixed-cycle maintenance or passive repair after failure.

[0063] This invention, through the synergistic effect of the load-bearing guide and positioning locking assembly 12 and the extraction drive and transfer assembly 14, utilizes the fixed support frame 121, extraction guide mechanism 122, anti-detachment limiting mechanism 123, positioning locking mechanism 124, extraction drive mechanism 141, transfer load-bearing mechanism 142, track connection adjustment mechanism 143, and safety braking locking mechanism 144 to achieve stable extraction, reliable load-bearing, accurate positioning, and safe transfer of the heat exchange core module group 11 in the confined space, thereby improving the positional consistency and operational reliability during repeated disassembly and assembly processes.

[0064] This invention achieves independent isolation, pressure relief, and interface reconnection of the seawater circuit 16 and the equipment cooling water circuit 17 through the fluid isolation and interface reset component 13. It compensates for interface installation deviations through the fluid interface component 131 and the seal compensation reset component 134, thereby improving the sealing reliability after module reinstallation. At the same time, combined with the safety control logic of the status monitoring and interlocking control component 15, it implements safety control requirements such as prohibiting unlocking without isolation, prohibiting extraction without pressure relief, prohibiting locking without positioning, prohibiting flow restoration without seal confirmation, and prohibiting the determination of replacement completion without operational verification. This reduces the risk of misoperation and improves the safety, reliability, and continuous task assurance capability of the heat exchanger maintenance process.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Various equivalent substitutions, simple modifications, or improvements made to the present invention by those skilled in the art without departing from the inventive concept should be included within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A modular group replacement system for heat exchange devices on underwater platforms, characterized in that: The system includes a heat exchange core module group (11), a load-bearing guide and positioning locking assembly (12), a fluid isolation and interface reset assembly (13), and a pumping drive and transfer assembly (14). The heat exchange core module group (11) includes a module support frame (111), multiple heat exchange modules (112), a dual-loop flow collector assembly (113), and a module-side centralized interface assembly (114). Multiple heat exchange modules (112) are fixed within the module support frame (111) using a unified installation reference. The module support frame (111) and the fixed support frame (121) adopt a separable load-bearing connection structure, so that multiple heat exchange modules (112) and the module support frame (111) together form a modular grouped heat exchange unit that can be moved out, transferred, and installed as a whole. The dual-loop flow collector assembly (113) is respectively connected to the module support frame (111) and the module support frame (111). The seawater-side flow channels and equipment cooling water-side flow channels of multiple heat exchange modules (112) are connected to each other to centrally distribute and collect the seawater-side fluid and equipment cooling water-side fluid of multiple heat exchange modules (112); the dual-loop flow collection assembly (113) enables multiple heat exchange modules (112) to share the seawater-side interface and equipment cooling water-side interface, and is connected to the module-side centralized interface assembly (114) so ​​that the heat exchange core module group (11) forms a single modular heat exchange unit with a unified fluid connection interface; the module-side centralized interface assembly (114) is set at the interface end of the modular grouped heat exchange unit and is connected to the dual-loop flow collection assembly (113) to integrate the fluid interfaces of multiple heat exchange modules (112) into a centralized interface corresponding to the seawater loop (16) and the equipment cooling water loop (17); The load-bearing guide and positioning locking assembly (12) includes a fixed load-bearing frame (121), an extraction guide mechanism (122), an anti-detachment limiting mechanism (123), and a positioning locking mechanism (124). The fixed load-bearing frame (121) is used to install on the basic structure inside the underwater platform compartment and to carry the modular heat exchange unit. The extraction guide mechanism (122) cooperates with the modular load-bearing frame (111) to limit the movement of the modular heat exchange unit in a predetermined direction. The anti-detachment limiting mechanism (123) is used to limit the offset and detachment during the movement. The positioning locking mechanism (124) is used to realize position correction and fixation after the modular heat exchange unit is installed in place. The fluid isolation and interface reset assembly (13) includes a fluid interface assembly (131), a dual-loop isolation assembly (132), a pressure relief and drainage assembly (133), and a seal compensation reset assembly (134). The dual-loop isolation assembly (132) is respectively installed in the seawater circuit (16) and the equipment cooling water circuit (17) to isolate the two fluid circuits respectively during the replacement of the modular heat exchange unit. The pressure relief and drainage assembly (133) is used to release the residual pressure after isolation and discharge the residual medium. The seal compensation reset assembly (134) is used to compensate for the interface deviation during the module installation process and restore the sealed connection between the module-side centralized interface assembly (114) and the fixed-side interface. The extraction drive and transfer assembly (14) includes an extraction drive mechanism (141), a transfer bearing mechanism (142), a track connection adjustment mechanism (143), and a safety braking locking mechanism (144), which are used to drive the modular grouped heat exchange unit to move out or be loaded along the extraction guide mechanism (122) as a whole, and to carry, transfer and lock after being separated from the fixed bearing frame (121).

2. The modular group replacement system for heat exchange devices on underwater platforms as described in claim 1, characterized in that: Multiple heat exchange modules (112) are installed in the module support frame (111) in a parallel, array or partitioned manner. Each heat exchange module (112) is connected to the module support frame (111) through a unified installation interface, so that the module support frame (111) bears the overall load-bearing function of multiple heat exchange modules (112).

3. A modular group replacement system for an underwater platform heat exchanger as described in claim 1, characterized in that: The dual-loop manifold assembly (113) includes a seawater-side manifold channel and an equipment cooling water-side manifold channel; wherein: the seawater-side manifold channel is used for the distribution and collection of seawater fluid in multiple heat exchange modules (112); the equipment cooling water-side manifold channel is used for the distribution and collection of equipment cooling water fluid in multiple heat exchange modules (112).

4. A modular group replacement system for an underwater platform heat exchanger as described in claim 1, characterized in that: The extraction guide mechanism (122) includes at least one of linear guide rail, slide guide rail or roller guide rail; the anti-detachment limiting mechanism (123) includes at least one of limiting block, limiting groove and guide constraint structure; the positioning locking mechanism (124) includes at least one of positioning pin, conical positioning structure, wedge structure and locking mechanism.

5. A modular group replacement system for an underwater platform heat exchanger as described in claim 4, characterized in that: The fluid interface assembly (131) includes a module-side interface and a fixed-side interface; the module-side interface and the fixed-side interface adopt a plug-in, end-face compression, or radial sealing connection structure.

6. A modular group replacement system for an underwater platform heat exchanger as described in claim 1, characterized in that: The extraction drive mechanism (141) includes at least one of a screw drive mechanism, an electric push rod mechanism, a hydraulic drive mechanism, or a traction drive mechanism; the track connection adjustment mechanism (143) is used to adjust the positional relationship between the extraction path of the fixed support frame (121) and the transfer path of the transfer support mechanism (142).

7. A modular group replacement system for an underwater platform heat exchanger as described in claim 1, characterized in that: It also includes a status monitoring and interlocking control component (15); the status monitoring and interlocking control component (15) includes an operating parameter monitoring component (151), a replacement determination module (152), a replacement status detection component (153), and an interlocking controller (154); the replacement determination module (152) is used to determine whether the modular grouped heat exchange unit meets the replacement conditions based on one or more parameters among heat exchange efficiency, pressure drop, flow rate, and leakage status.

8. A modular group replacement system for an underwater platform heat exchanger as described in claim 1, characterized in that: The interlock controller (154) sets the safety interlock logic as follows: the positioning lock is prohibited from being released when the dual-circuit isolation is not completed; the module extraction is prohibited when the pressure relief and drainage are not completed; the fluid connection is prohibited from being restored when the positioning lock is not completed; the flow is prohibited from being restored when the sealing status is not confirmed; and the replacement is prohibited from being determined to be completed when the operating status verification is not completed.

9. A modular group replacement method for an underwater platform heat exchanger as described in claim 1, characterized in that, Includes the following steps: S1. The operating status parameters of the heat exchange core module group (11) are collected by the status monitoring and interlocking control component (15), and the heat exchange core module group (11) is judged to meet the replacement conditions based on the heat exchange performance, flow state and safety status. S2. When a safety fault state of the heat exchange core module group (11) is detected, the replacement is performed directly; when a performance degradation state is detected, the replacement is determined based on the combination of heat exchange efficiency decrease, pressure drop increase and flow abnormality; the replacement control command is generated through the interlock controller (154), and the interface connection status, installation status and locking status of the heat exchange core module group (11) are confirmed. S3. The seawater circuit (16) and the equipment cooling water circuit (17) are isolated by the dual-loop isolation component (132) in the fluid isolation and interface reset component (13), and the residual pressure inside the heat exchange core module group (11) and the residual medium are discharged by the pressure relief and drainage component (133). S4. After completing fluid isolation and pressure relief, disconnect the module-side centralized interface assembly (114) from the fixed-side interface through the fluid interface assembly (131), and release the locking state of the heat exchange core module group (11) through the positioning locking mechanism (124). S5. Drive the heat exchange core module group (11) to move out as a whole along the extraction guide mechanism (122) in the load-bearing guide and positioning locking assembly (12) by the extraction drive mechanism (141) in the extraction drive and transfer assembly (14); S6. The heat exchange core module group (11) is carried out by the transfer bearing mechanism (142), and the stable transfer is completed by the track connection adjustment mechanism (143) and the safety braking locking mechanism (144). S7. The replaced heat exchange core module group (11) is installed into the fixed support frame (121) along the extraction guide mechanism (122), and the position is adjusted and locked by the positioning locking mechanism (124); S8. The connection between the module-side centralized interface component (114) and the fixed-side interface is restored by the fluid interface component (131), and the interface deviation is compensated by the sealing compensation reset component (134) to realize the fluid connection sealing restoration. S9. Restore the operation of the seawater circuit (16) and the equipment cooling water circuit (17). Detect the installation status, interface connection status, locking status, sealing status and operation status of the heat exchange core module group (11) through the status monitoring and interlocking control component (15). After meeting the preset requirements, determine that the heat exchange core module group (11) has been replaced.

10. The method as described in claim 9, characterized in that: If an abnormality in sealing, pressure difference, flow rate, or outlet temperature is detected after resuming operation, the safety interlock status is maintained, and at least one of the following operations is performed: repositioning, relocking, resealing, or reverification.

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