A marine methanol supply system cold and heat source system temperature regulating device

Abstract

The present application relates to the technical fields of temperature adjustment of marine methanol supply system, and discloses a cold and heat source system temperature adjustment device of marine methanol supply system, which comprises a box body, vertical partition plates are arranged on the two sides of the inside of the box body, the inside of the box body is divided into an inner cavity and an outer cavity, a heat exchanger fixed with the vertical partition plates is arranged in the inner cavity, a poking frame is further arranged in the inner cavity, an electric cylinder support is arranged above the box body, a lifting electric telescopic rod is fixed to the electric cylinder support, and the output end of the lifting electric telescopic rod is connected with the poking frame through a connecting rod. The lifting electric telescopic rod drives the reciprocating movement of the poking frame, active disturbance is formed, the laminar boundary layer of methanol fuel on the surface of the heat exchanger is completely destroyed, and a turbulent flow state is forcedly formed. The inner cavity forms a zigzag flow channel through the horizontal partition plate and the flow guide port, active disturbance is formed in combination with the lifting poking frame, turbulent flow is forcedly formed, the fuel temperature field is uniform and stable, and the temperature adjustment precision is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of temperature control technology for marine methanol supply systems, specifically a temperature control device for the cold and heat source system of a marine methanol supply system. Background Technology

[0002] With the widespread application of methanol as a clean alternative fuel in the marine sector, especially the rapid development of nuclear-powered ships and marine nuclear energy platforms, the methanol supply systems of ships equipped with nuclear reactors and pressurized water reactors require precise temperature control of methanol fuel to ensure stable combustion and efficient engine operation. Currently, marine methanol temperature control devices generally suffer from low heat exchange efficiency and insufficient temperature control precision, and are unable to adapt to the heat source supply characteristics of nuclear power system steam boilers. Under the complex operating conditions of ships, the heat exchange effect continuously declines. The specific reasons are as follows: Existing temperature control devices mostly adopt a single-cavity structure combined with a traditional circular tube heat exchanger. Methanol fuel is mostly in a stable laminar flow state within the cavity. When flowing across the surface of the heat exchange tubes, a thick heat transfer boundary layer is easily formed, significantly increasing thermal resistance and resulting in low heat transfer efficiency, failing to fully utilize the steam heat source converted from the waste heat of the nuclear reactor core. Simultaneously, the uniform flow state of methanol fuel easily leads to dead zones in local areas, resulting in uneven fuel heat exchange and large temperature field fluctuations. Furthermore, the marine environment is subject to continuous vibration, swaying, and temperature and pressure changes. Conventional heat exchangers have poor sealing performance, which can easily lead to media leakage. In addition, the heat exchange tubes and connecting bends are not well compatible, and long-term operation can easily cause stress fatigue, resulting in a gradual decline in heat exchange efficiency. This makes them unsuitable for the long-term stable operation requirements of nuclear power systems in nuclear-powered ships. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a temperature control device for the cold and heat source system of a marine methanol supply system, which solves the problem that existing methanol fuel tends to form a thick heat transfer boundary layer when flowing through the surface of the heat exchange tube during heat exchange, resulting in low heat transfer efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a temperature control device for a marine methanol supply system's cold and heat source system, comprising a housing, wherein vertical partitions are vertically arranged on both sides of the housing, dividing the housing into an inner cavity and an outer cavity; a methanol fuel inflow pipe and an outflow pipe communicating with the inner cavity are provided on the housing; a heat exchanger fixed to the vertical partitions is provided inside the inner cavity, and a medium outflow pipe and a medium inflow pipe penetrating the housing are respectively provided at the inlet and outlet ends of the heat exchanger; an actuating frame is also provided inside the inner cavity, the actuating frame comprising an upper frame above the heat exchanger and a lower frame below the heat exchanger, the upper frame and the lower frame being connected by a frame connecting beam; an electric cylinder bracket is provided above the housing, and a lifting electric telescopic rod is fixed on the electric cylinder bracket, the output end of the lifting electric telescopic rod being connected to the actuating frame via a connecting rod.

[0005] Preferably, the inner cavity is provided with at least two transverse partitions to divide the inner cavity into multiple compartments. Each transverse partition is provided with a guide port to connect the multiple compartments. Each compartment is provided with a heat exchanger, and the multiple heat exchangers are connected in sequence. The inlet of the uppermost heat exchanger is connected to the medium outlet pipe, and the outlet of the lowermost heat exchanger is connected to the medium inlet pipe. There are multiple actuating frames, which are arranged one-to-one with the heat exchangers.

[0006] Preferably, the upper frame of the actuating frame is a frame with several crossbeams spaced apart on the frame, and there is an upper gap between two adjacent crossbeams; the lower frame of the actuating frame has several lower gaps.

[0007] Preferably, each of the crossbeam supports is provided with a baffle at its bottom, the baffle including a plurality of connecting columns, and each of the connecting columns is provided with a flat plate at its bottom.

[0008] Preferably, each of the transverse partitions is provided with a guide cylinder, and a guide rod is provided through the guide cylinder, the guide rod being connected to the upper and lower actuating frames.

[0009] Preferably, the actuating frame further includes a guide assembly disposed between it and the housing. The guide assembly includes a support block fixed to the housing and a slider fixed to the connecting beam of the frame. A back beam plate is fixed inside the support block, and a guide rail is fixed on the back beam plate. The slider slides on the guide rail.

[0010] Preferably, the heat exchanger includes: a wall frame, multiple flat heat exchange tubes, multiple connecting bends, a connecting pipe, and heat exchange fins; the wall frame is fixedly connected to a vertical partition; the multiple flat heat exchange tubes are connected to the wall frame; the multiple connecting bends are sequentially connected to the ends of two adjacent heat exchange tubes; the connecting pipe is used to connect the outlet of the upper heat exchanger to the inlet of the lower heat exchanger; and the heat exchange fins are sleeved on the multiple flat driving heat exchange tubes.

[0011] Preferably, the heat exchange tube has flared ends at both ends, and a connector is provided between the flared ends and the connecting bend.

[0012] Preferably, the connector includes: a joint plate, a circular interface, a rectangular interface, a sealing ring, and a buckle; the joint plate is fixedly connected to the wall frame; the circular interface is located on one side of the joint plate and is connected to the connecting bend; the rectangular interface is located on the other side of the joint plate and is connected to the flared opening; the sealing ring is located at the connection gap between the rectangular interface and the flared opening; and the buckle is fastened to the outside of the flared opening.

[0013] The beneficial effects of this invention are as follows: By using the marine methanol supply system cold and heat source system temperature control device adapted to nuclear steam heat source provided by this invention, the reciprocating motion of the actuating frame driven by the lifting electric telescopic rod forms active turbulence, completely destroying the laminar boundary layer of methanol fuel on the heat exchanger surface and forcing a turbulent state. Combined with the high-efficiency structure of flat heat exchange tubes and heat exchange fins, the thermal resistance is greatly reduced, and the overall heat exchange efficiency is significantly improved compared with traditional static heat exchangers. It can fully adapt to the heat exchange requirements of steam medium output from nuclear power system steam boilers and efficiently utilize the waste heat resources generated by nuclear reactors and pressurized water reactor cores. The inner cavity forms a tortuous flow channel through the transverse baffles and guide ports. Combined with the active disturbance of the lifting actuating frame, the laminar state of methanol fuel is broken, and turbulence is forced to form, eliminating flow dead zones and local temperature unevenness, making the fuel temperature field uniform and stable, and greatly improving the temperature control accuracy. The turbulence structure effectively inhibits the deposition of fouling on the heat exchange surface, reducing the risk of scaling and corrosion. The overall structure has excellent anti-vibration and anti-sway performance and can stably adapt to the marine navigation conditions of nuclear-powered ships. The overall design reduces maintenance frequency, extends the service life of the equipment, lowers ship operating costs, and achieves efficient utilization of nuclear waste heat, making it highly valuable for engineering application. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a right view of the present invention; Figure 4 This is a three-dimensional structural diagram of the heat exchanger of the present invention; Figure 5 This is a front view of the heat exchanger of the present invention; Figure 6 This is a schematic diagram of the connection structure between the connector of the present invention and the connecting bend and the heat exchange tube; Figure 7 This is a schematic diagram of the three-dimensional structure of the toggle frame of the present invention; Figure 8 This is a schematic diagram of the structure of the turbulence-disrupting component of the present invention.

[0015] Explanation of reference numerals in the diagram: 1. Housing; 2. Medium outflow pipe; 3. Medium inflow pipe; 4. Methanol fuel inflow pipe; 5. Discharge pipe; 6. Lifting electric telescopic rod; 7. Electric cylinder bracket; 8. Connecting rod; 9. Vertical partition; 10. Horizontal partition; 11. Chamber; 12. Heat exchanger; 121. Wall frame; 122. Heat exchange fins; 123. Connecting bend; 124. Connecting pipe; 125. Heat exchange tube; 126. Connecting component; 1261. Joint plate; 1262. Rectangular interface; 126 3. Circular interface; 1264. Buckle; 1265. Sealing ring; 127. Flared opening; 13. Flow guide; 14. Actuating frame; 141. Upper frame; 142. Lower frame; 143. Frame connecting beam; 144. Crossbeam support plate; 145. Guide assembly; 1451. Guide rail; 1452. Back beam plate; 1453. Slider; 1454. Support block; 146. Upper gap; 147. Lower gap; 148. Connecting column; 149. Flat plate; 15. Guide cylinder; 16. Guide rod. Detailed Implementation

[0016] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Various changes can be made to the implementation schemes as long as the effects of the present invention can be achieved.

[0018] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0019] like Figures 1-8 As shown in the figure, this embodiment discloses a temperature control device for a marine methanol supply system's cold and heat source system, including a housing 1. The housing 1 is constructed entirely of high-strength, corrosion-resistant aluminum alloy sheet welded together, possessing excellent structural strength and seawater corrosion resistance. It can adapt to the vibration, swaying, and salt spray environment during the navigation of nuclear-powered ships and can stably meet the installation requirements of nuclear power systems on nuclear-powered ships. Vertical partitions 9 are vertically arranged on both sides inside the housing 1, dividing the interior of the housing 1 into an inner cavity and an outer cavity. A methanol fuel inflow pipe 4 and an outflow pipe 5 are provided on the housing 1, connecting the inner cavity. Both the methanol fuel inflow pipe 4 and the outflow pipe 5 are connected to the external methanol supply pipeline using flange structures. During installation, it is necessary to ensure a tight seal at the interface to prevent methanol fuel leakage. The inner cavity is the main channel for methanol fuel, while the outer cavity is mainly used to arrange heat exchanger pipes, connecting bends, and other structures, achieving spatial isolation between the inner and outer cavities and reserving operating space for pipeline connection, inspection, and maintenance.

[0020] The inner cavity houses a heat exchanger 12 fixed to the vertical partition 9. The heat exchanger 12 is bolted to the vertical partition 9 and is installed symmetrically in the center to ensure that methanol fuel can evenly contact the heat exchange surface when flowing through the inner cavity, thus improving the overall heat exchange uniformity. The inlet and outlet ends of the heat exchanger 12 are respectively provided with a medium outflow pipe 2 and a medium inflow pipe 3 penetrating the box 1. Sealing flanges are provided at the points where the medium outflow pipe 2 and the medium inflow pipe 3 penetrate the box 1 to prevent methanol fuel in the inner cavity from leaking out along the gaps in the pipe wall, and to prevent external water vapor and dust from entering the box and affecting the heat exchange efficiency. The medium outflow pipe 2 is connected to the main pipeline of the ship's cold and heat source system, and can be supplied with steam, hot water or other heat transfer media output from the steam boiler of the nuclear power system according to operational needs. It can be directly connected to the secondary heat exchange circuit of the nuclear reactor or pressurized water reactor to provide a stable heat source for methanol fuel and achieve precise temperature regulation and control of methanol fuel.

[0021] The heat transfer medium enters the heat exchanger 12 through the medium outlet pipe 2. The methanol fuel contacts and exchanges heat with the heat exchanger 12 in the inner cavity. The heated methanol fuel flows out through the discharge pipe 5, and the cooled heat transfer medium flows out through the medium inlet pipe 3. In actual use, after the methanol fuel enters the inner cavity through the methanol fuel inlet pipe 4, it flows slowly in the inner cavity and fully wraps the outer wall of the heat exchanger 12, and exchanges heat indirectly with the heat transfer medium in the pipe. For low-temperature methanol fuel, this heat exchange structure can quickly raise its temperature to a suitable operating range, avoiding problems such as poor fluidity and unstable supply pressure caused by excessively low temperature. The methanol fuel with a suitable temperature output from the discharge pipe 5 can be directly sent to the engine combustion system of high-tech ships, marine engineering equipment platforms, and luxury cruise ships and yachts to ensure the combustion efficiency and operational stability of the power system and meet the high reliability requirements of marine engineering equipment and high-tech ship clusters for power supply.

[0022] In this embodiment, at least two horizontal partitions 10 are arranged horizontally inside the inner cavity to divide the inner cavity into multiple compartments 11. Each partition 10 is provided with a flow guide 13 to connect the multiple compartments 11. The partitions 10 are also made of aluminum alloy sheet material consistent with the housing 1, and are sealed and welded to the vertical partitions 9 and the inner wall of the housing to ensure that methanol fuel can only flow between each compartment 11 through the preset flow guide 13, avoiding short-circuit flow. The flow guide 13 are staggered on the partitions 10, so that the methanol fuel forms a tortuous flow path when flowing through each compartment 11, prolonging the residence time of the fuel in the cavity and improving the heat exchange efficiency. The number of partitions 10 can be flexibly increased or decreased according to the overall heat exchange requirements of the device. The more compartments 11 there are, the longer the methanol fuel flow path.

[0023] It should be noted that each compartment 11 is equipped with a heat exchanger 12, and multiple heat exchangers 12 are connected in sequence. The inlet of the uppermost heat exchanger 12 is connected to the medium outlet pipe 2, and the outlet of the lowermost heat exchanger is connected to the medium inlet pipe 3. In the arrangement, multiple heat exchangers 12 are connected in series, so that the heat medium flows through each heat exchanger layer from top to bottom, forming a counterflow with the methanol fuel flowing from bottom to top or from top to bottom. The counterflow arrangement can further improve the heat transfer temperature difference and improve the overall heat exchange efficiency. The heat exchangers 12 are connected in series through external connecting pipes 124. The connecting pipes are arranged in the outer cavity, which does not occupy the heat exchange space of the inner cavity, and at the same time facilitates installation, disassembly and subsequent maintenance and replacement.

[0024] like Figure 2 As shown, there are two diaphragms 10, which divide the interior of the cavity into three compartments 11; correspondingly, there are also three heat exchangers 12, which are placed in the three compartments 11 respectively.

[0025] In this embodiment, as Figure 4 and Figure 5As shown, the heat exchanger 12 includes a wall frame 121, multiple flat heat exchange tubes 125, multiple connecting bends 123, a connecting pipe 124, and heat exchange fins 122; wherein, the wall frame 121 is fixedly connected to the vertical partition 9; the multiple flat heat exchange tubes 125 are connected to the wall frame 121, and the heat exchange tubes 125 are located in the inner cavity; the multiple connecting bends 123 are sequentially connected to the ends of two adjacent heat exchange tubes 125, and the connecting bends 123 are located in the outer cavity; the connecting pipe 124 is used to allow the outlet of the heat exchanger 12 above to... The inlet is connected to the heat exchanger 12 below; heat exchange fins 122 are fitted onto multiple flat drive heat exchange tubes 125; the wall frame 121 is the main support structure of the heat exchanger 12, made of welded profiles, with sufficient rigidity to support multiple heat exchange tubes 125 and heat exchange fins 122, and is not easily deformed or loosened in the vibration environment of the ship; the flat heat exchange tubes 125 are made of copper material with excellent thermal conductivity, and the heat exchange fins 122 are made of stainless steel sheet stamping, and are tightly fitted onto the heat exchange tubes 125 by expansion or welding. 5. The outer wall maximizes the heat exchange area and enhances the heat exchange effect, enabling efficient heat transfer between the steam medium and methanol fuel, fully meeting the heat exchange requirements of nuclear reactor waste heat utilization; the connecting bend 123 and the connecting pipe 124 are both made of temperature and pressure resistant materials, which can withstand the temperature changes and pressure shocks caused by long-term circulation of the heat medium, avoiding cracking, leakage and other failures; the wall frame 121 and the vertical partition plate 9 are connected by bolts for easy removal of the entire heat exchanger for maintenance or replacement; heat exchange tube 125 With a flat structure, compared to traditional round tubes, its external heat exchange boundary layer is thinner, which can significantly enhance the convective heat transfer coefficient on the methanol fuel side, while reducing the flow resistance inside the tube, making the heat medium flow more smoothly. The connecting elbow 123 is set in the outer cavity, which not only avoids direct contact with methanol fuel, but also facilitates assembly and leak detection. During maintenance, the elbow can be disassembled separately to check the sealing performance without disassembling the entire inner cavity structure. The heat exchange fins 122 and the heat exchange tubes 125 are tightly fitted without gaps, preventing the heat exchange efficiency from being reduced due to contact thermal resistance.

[0026] The heat exchange tube 125 is designed as a flat tube, eliminating the "center" of the tube and overcoming the problem of flow stagnation in the central area of ​​traditional circular tubes. This makes the fluid flow inside and outside the tube more uniform, reduces local dead zones, and improves the overall heat transfer uniformity. At the same time, the flat tube has a larger outer surface area for the same flow cross-sectional area, allowing for more heat exchange surfaces to be arranged in a limited space, further improving the heat exchange capacity per unit volume. This is particularly suitable for the space-constrained installation environment of high-tech ships, luxury cruise ships, yachts, and marine engineering equipment platforms. In the turbulent and rocking conditions of marine operations, the flat tube structure also helps methanol fuel to form continuous disturbance on the tube wall surface, further suppressing boundary layer thickening. It can maintain a high-efficiency heat exchange state in all sea states, adapting to the complex operating scenarios of marine engineering equipment and high-tech ship clusters.

[0027] Furthermore, the heat exchange tube 125 has flared ends 127 at both ends, and a connector 126 is connected between the flared ends 127 and the connecting bend 123. The flared ends 127 are formed by die stamping, and the flared part is smooth and burr-free, so as to avoid scratching the sealing ring or connecting pipe during the assembly process.

[0028] In this embodiment, the connector 126 is as follows: Figure 6 The assembly includes a connector plate 1261, a circular interface 1263, a rectangular interface 1262, a sealing ring 1265, and a buckle 1264. The connector plate 1261 is fixedly connected to the wall frame 121. Specifically, the connector plate 1261 and the wall frame 121 are fastened with bolts, ensuring accurate installation and positioning, and guaranteeing a neat overall arrangement of the heat exchange tube assembly. The circular interface 1263 is located on one side of the connector plate 1261 and connects to the connecting bend 123. The rectangular interface 1262 is located on the other side of the connector plate 1261 and connects to the flared end 127. The circular interface 1263 and the rectangular interface 1262 are respectively adapted to the arc-shaped connecting bend 123 and the flat tube heat exchange tube 125, achieving a smooth transition connection between the irregularly shaped tube ends and avoiding flow problems caused by abrupt changes in cross-section. Dynamic eddy currents and pressure loss; the sealing ring 1265 is located at the connection gap between the rectangular interface 1262 and the flared end 127. The sealing ring 1265 is made of fluororubber material that is resistant to methanol, oil, and temperature, and has good sealing performance and anti-aging performance. It can maintain the sealing effect for a long time in marine environments; the buckle 1264 is fastened to the outside of the flared end 127. The buckle 1264 adopts a snap-fit ​​structure, which can maintain the clamping force under long-term vibration conditions, improving the reliability of the device operation; it is easy to disassemble and assemble, and can form a clamping protection for the sealing ring and the pipe connection to prevent loosening and falling off; the use of this connector 126 can ensure the normal connection between the flat heat exchange tube 125 and the connecting bend 123, and improve the sealing performance and connection strength at the connection with the heat exchange tube 125.

[0029] In this embodiment, as Figure 2 , Figure 3 As shown, an agitator 14 is also installed inside the inner cavity to agitate the methanol fuel, allowing it to be pushed and pulled to form turbulence under normal flow conditions. This improves the contact effect between the methanol fuel and the heat exchanger 12, prevents the formation of a laminar layer on the surface of the heat exchanger 12 due to normal flow, and increases the heat exchange effect. The agitator 14 is made of lightweight, high-strength, and corrosion-resistant materials, which reduces the lifting drive load while ensuring structural strength. Its purpose is to disrupt the stable laminar boundary layer formed by the methanol fuel on the surface of the heat exchanger, because laminar flow greatly reduces the heat transfer coefficient and decreases the heat transfer efficiency. Through active agitation, the methanol fuel is made to form a turbulent state in the cavity, enhancing fluid turbulence and allowing the low-temperature fuel to continuously contact the high-temperature wall of the heat exchanger, significantly improving the overall heat transfer efficiency, especially under low flow rate conditions.

[0030] like Figure 7 As shown, the actuating frame 14 includes an upper frame 141 located above the heat exchanger 12 and a lower frame 142 located below the heat exchanger 12. The upper frame 141 and the lower frame 142 are symmetrically arranged on the upper and lower sides of the heat exchanger 12, and are connected by a frame connecting beam 143. The frame connecting beam 143 provides a rigid connection, ensuring that the upper and lower frames move synchronously and that there will be no misalignment or jamming, thus ensuring that the actuating frame operates smoothly and reliably. During the up-and-down movement of the upper frame 141 and the lower frame 142, the methanol fuel in the upper and lower parts of the heat exchanger can be disturbed simultaneously, making the flow field in the entire heat exchange area uniform.

[0031] Furthermore, there are multiple actuation frames 14, each corresponding to a heat exchanger 12. Each heat exchanger 12 is equipped with an independent actuation frame 14, which can individually disturb the methanol fuel in the corresponding compartment 11, avoiding the problems of insufficient local disturbance and heat exchange lag. Multiple actuation frames 14 are linked in series through guide rods 16 and driven synchronously by the same lifting drive device. The control method is simple, the operation is well coordinated, and it is easy to realize automated control and centralized management.

[0032] Furthermore, the upper frame 141 of the actuating frame 14 is a frame with several crossbeams 144 spaced apart on the frame, and there is an upper gap 146 between two adjacent crossbeams 144; the lower frame 142 of the actuating frame 14 has several lower gaps 147; the crossbeams 144 are evenly distributed, which can both disturb the methanol fuel and ensure normal fuel flow through the upper gaps 146 without causing significant throttling; the lower gaps 147 of the lower frame 142 correspond vertically to the upper gaps 146 of the upper frame, so that the methanol fuel can pass smoothly through the frame when it is disturbed by pushing and pulling, avoiding a sudden increase in local pressure.

[0033] like Figure 8 As shown, each crossbeam support plate 144 is provided with a flow-disrupting component at its bottom. The flow-disrupting component includes several connecting columns 148, and each connecting column 148 is provided with a flat plate 149 at its bottom. The connecting columns 148 are evenly distributed below the crossbeam support plate 144, and the flat plate 149 is horizontally set. When it moves up and down with the agitator, it can push and cut the methanol fuel, breaking the stable flow layer. The flat plate 149 can generate sufficient disturbance strength, and at the same time, the edges are rounded to avoid generating excessive resistance or causing local cavitation during the flow process.

[0034] An electric cylinder bracket 7 is installed on the top of the housing 1. A lifting electric telescopic rod 6 is fixed on the electric cylinder bracket 7. The output end of the lifting electric telescopic rod 6 is connected to the actuating frame 14 through a connecting rod. Specifically, the electric cylinder bracket 7 is fixed to the top outer wall of the housing 1. The structure is stable and must be able to withstand the reciprocating pushing and pulling forces of the lifting electric telescopic rod 6 during operation.

[0035] Each transverse partition 10 is equipped with a guide cylinder 15, and a guide rod 16 is inserted through the guide cylinder 15, connecting the upper and lower actuating frames 14. The guide cylinder 15 has a wear-resistant bushing embedded inside to reduce the frictional resistance of the guide rod 16 during movement, and also serves as a limiting guide, ensuring that the actuating frame reciprocates only in the vertical direction and does not deviate horizontally. The guide rod 16 is made of smooth round steel with a rust-proof surface, making it resistant to wear and jamming during long-term reciprocating motion. Multiple guide rods 16 synchronously constrain the movement posture of the multi-layered actuating frames, ensuring that the lifting height of each frame is uniform. The movement is smooth and vibration-free. When connected, the guide rod 16 is connected at both ends to the lower frame 142 of the upper actuating frame 14 and the upper frame 141 of the lower actuating frame 14, respectively. The linkage setting means that only one drive at the top is needed to realize the synchronous movement of all actuating frames, simplifying the drive system and reducing the number of failure points. The connection parts are fixed with fastening pins or bolts, which have high connection strength and are not easy to loosen during frequent reciprocating movements, ensuring long-term stable operation. During assembly, the guide rod must be kept vertical to avoid increased movement resistance or abnormal noise due to tilting.

[0036] In practical implementation, the reciprocating extension and retraction of the lifting electric telescopic rod 6 drives all the agitator frames 14 to move slightly up and down at their corresponding heat exchangers 12. When the agitator frame 14 moves, its upper frame 141, lower frame 142, and turbulence-inducing components all agitate the methanol fuel to move up and down, forming turbulence. The slight displacement operation mode can avoid drastic fluctuations in methanol fuel supply pressure caused by large movements, ensuring stable system operation. In implementation, the reciprocating motion frequency and stroke can be flexibly adjusted according to the methanol flow rate, initial temperature, and target temperature. When the flow rate is high and the temperature is low, the disturbance frequency can be appropriately increased to enhance heat exchange. When the flow rate is low and the temperature is close to the set value, the frequency can be reduced to save energy.

[0037] In addition, to increase the smoothness of the reciprocating motion of the actuating frame 14, the actuating frame 14 also includes a guide assembly 145 disposed between it and the housing 1. The guide assembly 145 includes a support block 1454 fixed to the housing 1 and a slider 1453 fixed to the frame connecting beam 143. A back beam plate 1452 is fixed to the inner side of the support block 1454, and a guide rail 1451 is fixed on the back beam plate 1452. The slider 1453 slides on the guide rail 1451. The support block 1454 and the back beam plate 1452 are used to support and fix the guide rail 1451. As the actuating frame 14 reciprocates, its frame connecting beam 143 moves up and down, causing the slider 1453 to slide on the guide rail 1451, supporting the reciprocating motion of the actuating frame 14. The guide assembly 145 serves as an auxiliary guide structure, further improving the linearity and stability of the actuating frame's movement, especially during long-stroke, high-frequency operation. The guide assembly 145 can effectively counteract the lateral forces caused by the ship's roll and pitch, preventing the actuating frame from swinging, colliding with the housing or heat exchanger during movement, and ensuring the safe operation of the equipment.

[0038] The basic principles, main features and advantages of the present invention have been described above; however, the above description is only a specific embodiment of the present invention, and the technical features of the present invention are not limited thereto. Any other implementation methods derived by those skilled in the art without departing from the technical solution of the present invention should be covered within the patent scope of the present invention.

[0039] In the description of this invention, each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. As the apparatus disclosed in the embodiments corresponds to the methods disclosed in the embodiments, the description is relatively simple, and relevant parts can be referred to the method section.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature control device for a marine methanol supply system's cold and heat source system, characterized in that: The device includes a housing (1), on which vertical partitions (9) are vertically arranged on both sides to divide the interior of the housing (1) into an inner cavity and an outer cavity. A methanol fuel inflow pipe (4) and an outflow pipe (5) connecting the inner cavity are provided on the housing (1). A heat exchanger (12) fixed to the vertical partitions (9) is provided inside the inner cavity. The inlet and outlet ends of the heat exchanger (12) are respectively provided with a medium outflow pipe (2) and a medium inflow pipe (3) penetrating the housing (1). The inner cavity is also provided with a lever (14), which includes an upper lever (141) located above the heat exchanger (12) and a lower lever (142) located below the heat exchanger (12). The upper lever (141) and the lower lever (142) are connected by a lever connecting beam (143). An electric cylinder bracket (7) is provided above the housing (1), and a lifting electric telescopic rod (6) is fixed on the electric cylinder bracket (7). The output end of the lifting electric telescopic rod (6) is connected to the actuating frame (14) through a connecting rod. The inner cavity is provided with at least two transverse partitions (10) to divide the inner cavity into multiple compartments (11). Each transverse partition (10) is provided with a flow guide (13) to connect the multiple compartments (11). Each of the partitions (11) is provided with a heat exchanger (12), and multiple heat exchangers (12) are connected in sequence. The inlet of the uppermost heat exchanger (12) is connected to the medium outlet pipe (2), and the outlet of the lowermost heat exchanger is connected to the medium inlet pipe (3). There are multiple actuation frames (14), each corresponding to one of the heat exchangers (12); The upper frame (141) of the actuating frame (14) is a frame, and several crossbeams (144) are distributed at intervals on the frame, with an upper gap (146) between two adjacent crossbeams (144); the lower frame (142) of the actuating frame (14) has several lower gaps (147). Each of the crossbeam support plates (144) is provided with a baffle at the bottom, the baffle including a plurality of connecting columns (148), and each of the connecting columns (148) is provided with a flat plate (149) at the bottom. Each of the transverse partitions (10) is provided with a guide cylinder (15), and a guide rod (16) is provided through the guide cylinder (15). The guide rod (16) is connected to the upper and lower actuating frame (14).

2. The temperature control device for a marine methanol supply system's cold and heat source system according to claim 1, characterized in that: The actuating frame (14) also includes a guide assembly (145) disposed between it and the housing (1). The guide assembly (145) includes a support block (1454) fixed to the housing (1) and a slider (1453) fixed to the frame connecting beam (143). A back beam plate (1452) is fixed inside the support block (1454), and a guide rail (1451) is fixed on the back beam plate (1452). The slider (1453) slides on the guide rail (1451).

3. The temperature control device for a marine methanol supply system's cold and heat source system according to claim 1, characterized in that: The heat exchanger (12) includes: The wall frame (121) is fixedly connected to the vertical partition (9); Multiple flat heat exchange tubes (125) are connected to the wall frame (121); Multiple connecting bends (123) are sequentially connected to the ends of two adjacent heat exchange tubes (125); A connecting pipe (124) is provided for connecting the outlet of the upper heat exchanger (12) to the inlet of the lower heat exchanger (12); Heat exchange fins (122) are fitted onto multiple flat heat exchange tubes (125).

4. The temperature control device for a marine methanol supply system's cold and heat source system according to claim 3, characterized in that: The heat exchange tube (125) has flared ends (127) at both ends, and a connector (126) is connected between the flared ends (127) and the connecting bend (123).

5. The temperature control device for a marine methanol supply system's cold and heat source system according to claim 4, characterized in that: The connector (126) includes: The connector plate (1261) is fixedly connected to the wall frame (121); A circular interface (1263) is located on one side of the connector plate (1261) and is connected to the connecting bend (123); A rectangular interface (1262) is located on the other side of the connector plate (1261) and is connected to the flared opening (127); A sealing ring (1265) is located at the connection gap between the rectangular interface (1262) and the flared opening (127); The buckle (1264) is fastened to the outside of the flared opening (127).

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