Ship cooler

Abstract

The invention discloses a ship cooler, and particularly relates to the technical field of coolers. Comprising a heat exchange shell, a plurality of heat exchange pipes and a fixing mechanism, a water inlet pipe is arranged at the top of the heat exchange shell, a water outlet pipe is arranged at the bottom of the heat exchange shell, flow guide covers are fixedly installed on the left side and the right side of the heat exchange shell, and a vibration reduction mechanism is fixedly installed at the bottom of the heat exchange shell; the multiple heat exchange pipes are detachably installed in the heat exchange shell through the fixing mechanisms. Through the elastic fixing mechanism composed of the first fixing sleeve, the second fixing sleeve, the first spring and the like, the heat exchange tube can be quickly assembled and disassembled, meanwhile, the heat expansion and cold contraction stress of the heat exchange tube can be effectively absorbed, tube body deformation and connector leakage are fundamentally prevented, the equipment reliability is greatly improved, and the service life of the equipment is greatly prolonged. The integrated flow guide plate and the vibration assembly act synergistically, so that the heat exchange efficiency is enhanced, and online scale prevention and removal are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coolers, in particular to a ship cooler. BACKGROUND

[0002] A cooler is a device for transferring heat from a hot fluid to a cold fluid, which is widely used in various industrial systems to maintain process temperature or normal operation of equipment. In the field of ships, due to the compact space, harsh environment and inconvenient maintenance, the reliability, compactness and corrosion resistance of the cooling equipment are highly required.

[0003] The most commonly used tube-shell cooler in the field of ships is composed of a cylinder as an outer shell (heat exchange shell), tube sheets for fixing the tube bundle at both ends, and a head (tube box) for packaging the tube sheets and forming a flow channel; a large number of slender heat exchange tubes are arranged in parallel inside to form a tube-side flow channel, and the space between the outer wall of the tube bundle and the inner wall of the shell forms a shell-side flow channel; two fluids with different temperatures flow in the tube-side and shell-side, respectively, and heat exchange is carried out through the metal wall of the heat exchange tube, so as to achieve the process purpose of cooling or heating.

[0004] In the prior art, in order to ensure the sealing and pressure-bearing capacity, a rigid connection mode of welding or strength expansion is usually used between the heat exchange tube and the tube sheet of the tube-shell cooler. Although this fixing process is firm, due to the difference in the thermal expansion coefficient between the outer shell and the heat exchange tube, and the thermal expansion and contraction of the heat exchange tube itself, the rigid connection will constrain the free deformation of the heat exchange tube, thereby generating a large thermal stress inside. Long-term action of this stress can easily lead to fatigue cracks at the connection between the heat exchange tube and the tube sheet, leakage, or bending deformation of the tube body itself, which seriously affects the safety and service life of the equipment. SUMMARY

[0005] The present application aims to solve the problem of the rigid connection between the heat exchange tube and the tube sheet of the tube-shell cooler in the prior art, which can easily lead to fatigue cracks at the connection between the heat exchange tube and the tube sheet, leakage, or bending deformation of the tube body itself due to thermal expansion and contraction, and seriously affects the safety and service life of the equipment. A ship cooler is provided, which is composed of a first fixing sleeve, a second fixing sleeve and a first spring, and can effectively absorb the thermal expansion and contraction stress while realizing quick assembly and disassembly of the heat exchange tube, thereby fundamentally preventing deformation of the tube body and leakage of the joint.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: Design a ship cooler, including a heat exchange shell, several heat exchange tubes, and a fixing mechanism. The heat exchange shell has an inlet pipe at the top and an outlet pipe at the bottom. Flow guides are fixedly installed on both sides of the shell, and a vibration damping mechanism is fixedly installed at the bottom. The fixing mechanism is located inside the heat exchange shell. Several heat exchange tubes are detachably installed inside the heat exchange shell via the fixing mechanism. The fixing mechanism includes two sets of fixing plates fixedly installed on the left and right sides of the heat exchange shell, and two first fixing sleeves threaded to the left and right ends of each heat exchange tube. Two second fixing sleeves are slidably connected to the two first fixing sleeves via elastic components. A fixing plate is provided at the end of each second fixing sleeve away from the first fixing sleeve. The elastic component is configured to provide a pressing force to the fixing plate towards the fixing plate, so that the heat exchange tubes are pressed and fixed between the two sets of fixing plates.

[0007] Furthermore, the elastic component includes a first movable flange disposed on the outer wall of the first fixed sleeve at the end away from the heat exchange tube and a second movable flange disposed on the inner wall of the second fixed sleeve at the end near the first fixed sleeve. The first movable flange is slidably installed on the inner wall of the second fixed sleeve, and the second movable flange is slidably installed on the outer wall of the first fixed sleeve. The first spring is sleeved on the outer wall of the first fixed sleeve and its two ends are respectively fixedly connected to the first movable flange and the second movable flange.

[0008] Furthermore, a plurality of limiting protrusions are fixedly installed on the outer wall of the first movable flange, and a plurality of limiting grooves adapted to the limiting protrusions are opened on the inner wall of the second fixed sleeve, and the limiting protrusions are slidably installed in the limiting grooves.

[0009] Furthermore, the surface of the fixed disk is provided with several operating holes.

[0010] Furthermore, a sealing gasket is fixedly installed on the side of the fixed plate near the fixed plate.

[0011] Furthermore, a plurality of guide plates are staggered on the inner wall of the heat exchange shell, and a plurality of vibration components are fixedly installed on the surface of the guide plates.

[0012] Furthermore, the vibration damping mechanism includes a mounting frame and several connecting blocks fixed to the bottom of the heat exchange shell. The bottom of the connecting blocks is fixedly connected to the top of the mounting frame via rubber columns. A second spring is sleeved on the outer wall of the rubber columns. Several counterweights are fixedly installed at the bottom of the mounting frame.

[0013] The ship cooler proposed in this invention has the following advantages: the elastic fixing mechanism composed of a first fixing sleeve, a second fixing sleeve, and a first spring enables rapid assembly and disassembly of the heat exchange tubes while effectively absorbing their thermal expansion and contraction stress, fundamentally preventing tube deformation and joint leakage, and greatly improving equipment reliability and lifespan. The integrated guide plate and vibration component work together to enhance heat exchange efficiency and achieve online scale prevention and removal, while the composite vibration damping mechanism and counterweight ensure stable operation of the equipment in the environment of ship vibration and swaying. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial structural cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the fixing mechanism of the present invention; Figure 4 This is a schematic diagram of the vibration reduction mechanism of the present invention.

[0015] In the diagram: 1. Heat exchange shell; 2. Heat exchange tube; 3. Fixing mechanism; 301. Fixing plate; 302. First fixing sleeve; 303. First movable flange; 304. First spring; 305. Limiting protrusion; 306. Second fixing sleeve; 307. Second movable flange; 308. Fixing plate; 309. Operating hole; 310. Sealing gasket; 311. Limiting groove; 4. Vibration damping mechanism; 401. Mounting bracket; 402. Connecting block; 403. Rubber column; 404. Second spring; 405. Counterweight; 5. Water inlet pipe; 6. Water outlet pipe; 7. Flow guide; 8. Flow guide plate; 9. Vibration assembly. Detailed Implementation

[0016] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] The structural features of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] See Figures 1-4 A ship cooler includes a heat exchange shell 1, several heat exchange tubes 2, and a fixing mechanism 3. The heat exchange shell 1 has an inlet pipe 5 at the top and an outlet pipe 6 at the bottom. Flow guides 7 are fixedly installed on both sides of the shell 1, and a vibration damping mechanism 4 is fixedly installed at the bottom. The fixing mechanism 3 is located inside the heat exchange shell 1. Several heat exchange tubes 2 are detachably installed inside the heat exchange shell 1 through the fixing mechanism 3. Several flow guides 8 are staggered on the inner wall of the heat exchange shell 1. Several vibration components 9 are fixedly installed on the surface of the flow guides 8. The flow guides 7 are used to guide the tube-side fluid to enter and leave the heat exchange tubes 2 evenly. The flow guides 8 are used to change the flow path of the shell-side coolant, making it flow in an S-shape to enhance the turbulence effect and improve the heat exchange efficiency. The vibration components 9 can generate high-frequency, low-amplitude mechanical vibration to peel off and suppress scale formation on the surface of the heat exchange tubes 2 and the flow guides 8, thus playing a role in scale prevention and removal. The fixing mechanism 3 includes two sets of fixing plates 301 respectively fixedly installed on the left and right sides of the heat exchange shell 1, and two first fixing sleeves 302 threadedly connected to the left and right ends of each heat exchange tube 2. The two second fixing sleeves 306 are slidably connected to the two first fixing sleeves 302 respectively through elastic components. A fixing plate 308 is provided at the end of the second fixing sleeve 306 away from the first fixing sleeve 302. The elastic component is configured to provide a pressing force to the fixing plate 301 towards the fixing plate 308 so that the heat exchange tube 2 is pressed and fixed between the two sets of fixing plates 301. The pressing force generated by the elastic component between the first fixing sleeve 302 and the second fixing sleeve 306 drives the fixing plate 308 to press tightly against the fixing plate 301, thereby reliably fixing the heat exchange tube 2 in the preset working position. Its internal elastic sliding structure provides valuable freedom for the axial dimension changes of the heat exchange tube 2 due to thermal expansion and contraction when the working conditions change. The elastic component includes a first movable flange 303 disposed on the outer wall of the end of the first fixed sleeve 302 away from the heat exchange tube 2, and a second movable flange 307 disposed on the inner wall of the end of the second fixed sleeve 306 near the first fixed sleeve 302. The first movable flange 303 is slidably mounted on the inner wall of the second fixed sleeve 306, and the second movable flange 307 is slidably mounted on the outer wall of the first fixed sleeve 302. A first spring 304 is sleeved on the outer wall of the first fixed sleeve 302, and its two ends are respectively fixedly connected to the first movable flange 303 and the second movable flange 307. A plurality of limiting protrusions 305 are fixedly mounted on the outer wall of the first movable flange 303. A plurality of limiting grooves 311 adapted to the limiting protrusions 305 are opened on the inner wall of the second fixed sleeve 306. The limiting protrusions 305 are slidably mounted in the limiting grooves 311. A plurality of operating holes 30 are opened on the surface of the fixed plate 308. 9. A sealing gasket 310 is fixedly installed on the side of the fixed disk 308 near the fixed plate 301. The first spring 304 is the core elastic element that provides axial clamping force and absorbs thermal displacement. The sliding pair formed by the limiting protrusion 305 and the limiting groove 311 has a dual key function. It realizes the linkage between the second fixed sleeve 306 and the first fixed sleeve 302 in the circumferential direction, so that when the fixed disk 308 is rotated by inserting a tool into the operating hole 309, the torque can be effectively transmitted to the first fixed sleeve 302, thereby easily completing the tightening or disassembly of its thread with the end of the heat exchange tube 2. At the same time, the axial sliding freedom is completely preserved to ensure the smooth operation of the thermal compensation function. The sealing gasket 310 on the fixed disk 308 is pressed tightly against the sealing surface of the fixed plate 301 by the elastic force, forming a reliable static seal, ensuring that the two fluids in the tube side and the shell side will not leak into each other under high pressure. The vibration damping mechanism 4 includes a mounting frame 401 and several connecting blocks 402 fixed to the bottom of the heat exchange shell 1. The bottom of the connecting blocks 402 is fixedly connected to the top of the mounting frame 401 through rubber columns 403. A second spring 404 is sleeved on the outer wall of the rubber column 403. Several counterweights 405 are fixedly installed at the bottom of the mounting frame 401. The rubber column 403 provides high-frequency damping, which can quickly absorb and dissipate high-frequency vibration energy, while the second spring 404 on its outside mainly deals with low-frequency, large-amplitude impacts. The counterweights 405 installed at the bottom of the mounting frame 401 effectively lower the center of gravity of the entire equipment, improve the foundation mass and inertia of the equipment, and thus significantly improve the overall stability and anti-overturning ability under harsh working conditions such as ship swaying and tilting.

[0021] The ship cooler of the present invention, through the elastic fixing mechanism 3 composed of the first fixing sleeve 302, the second fixing sleeve 306 and the first spring 304, can achieve quick installation and removal of the heat exchange tube 2, while effectively absorbing its thermal expansion and contraction stress, fundamentally preventing tube deformation and joint leakage, and greatly improving the reliability and life of the equipment. The integrated guide plate 8 and the vibration component 9 work together to enhance the heat exchange efficiency and realize online scale prevention and removal. The composite vibration damping mechanism 4 and the counterweight 405 ensure the stable operation of the equipment in the environment of ship vibration and swaying.

[0022] Specifically, in the tube side, the fluid to be cooled enters from the guide shroud 7 on one side and is evenly distributed into the interior of all heat exchange tubes 2. After flowing through the entire tube bundle, it is discharged from the guide shroud 7 on the other side. At the same time, in the shell side, the coolant enters the interior of the heat exchange shell 1 from the water inlet pipe 5 at the top. During the flow process, the coolant is repeatedly blocked and guided by the guide plates 8 installed alternately on the inner wall of the shell, and is forced to repeatedly change its flow direction, and horizontally scours the outer wall of the heat exchange tubes 2 in an S-shaped path. This allows for efficient heat exchange between the heat medium flowing in the heat exchange tubes 2 and the coolant flowing in the heat exchange shell 1. The coolant that has completed the heat exchange is finally discharged from the water outlet pipe 6 at the bottom. When the equipment starts up or stops or the load changes, causing temperature fluctuations, the heat exchange tube 2 will change length due to thermal expansion and contraction. At this time, the first spring 304 in the fixing mechanism 3 will absorb this stress through the relative sliding of the first fixing sleeve 302 and the second fixing sleeve 306, so as to avoid the tube body from being deformed by force. The vibration component 9 installed on the guide plate 8 can generate high-frequency micro-vibration and transmit it to the heat exchange tube 2 through the guide plate 8, effectively inhibiting the adhesion of scale. At the same time, the vibration during the operation of the ship is isolated by the vibration damping mechanism 4 at the bottom. The rubber column 403 and the second spring 404 absorb the impact together, while the counterweight 405 provides stability, together ensuring that the cooler operates smoothly under complex working conditions.

[0023] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ship cooler, characterized in that, include: The heat exchange shell (1) is provided with a water inlet pipe (5) at the top and a water outlet pipe (6) at the bottom. A flow guide (7) is fixedly installed on both its left and right sides, and a vibration damping mechanism (4) is fixedly installed at its bottom. A fixing mechanism (3) is provided inside the heat exchange shell (1); A plurality of heat exchange tubes (2) are detachably installed inside the heat exchange shell (1) by means of the fixing mechanism (3); The fixing mechanism (3) includes two sets of fixing plates (301) respectively fixedly installed on the left and right sides of the heat exchange shell (1), two first fixing sleeves (302) threadedly connected to the left and right ends of each heat exchange tube (2), and two second fixing sleeves (306) slidably connected to the two first fixing sleeves (302) respectively through elastic components. A fixing plate (308) is provided at the end of the second fixing sleeve (306) away from the first fixing sleeve (302). The elastic component is configured to provide a pressing force to the fixing plate (308) towards the fixing plate (301) so that the heat exchange tube (2) is pressed and fixed between the two sets of fixing plates (301).

2. A ship cooler according to claim 1, characterized in that, The elastic component includes a first movable flange (303) disposed on the outer wall of the first fixed sleeve (302) away from the heat exchange tube (2) and a second movable flange (307) disposed on the inner wall of the second fixed sleeve (306) near the first fixed sleeve (302). The first movable flange (303) is slidably installed on the inner wall of the second fixed sleeve (306), and the second movable flange (307) is slidably installed on the outer wall of the first fixed sleeve (302). A first spring (304) is sleeved on the outer wall of the first fixed sleeve (302) and its two ends are respectively fixedly connected to the first movable flange (303) and the second movable flange (307).

3. A ship cooler according to claim 2, characterized in that, The outer wall of the first movable flange (303) is fixedly equipped with a plurality of limiting protrusions (305), and the inner wall of the second fixed sleeve (306) is provided with a plurality of limiting grooves (311) that are adapted to the limiting protrusions (305). The limiting protrusions (305) are slidably installed in the limiting grooves (311).

4. A ship cooler according to claim 3, characterized in that, The surface of the fixed disk (308) is provided with a plurality of operating holes (309).

5. A ship cooler according to claim 4, characterized in that, A sealing gasket (310) is fixedly installed on the side of the fixed plate (301) near the fixed plate (308).

6. A ship cooler according to claim 5, characterized in that, The inner wall of the heat exchange shell (1) is provided with several guide plates (8) installed in an alternating manner, and several vibration components (9) are fixedly installed on the surface of the guide plates (8).

7. A ship cooler according to claim 5, characterized in that, The vibration damping mechanism (4) includes a mounting frame (401) and several connecting blocks (402) fixed to the bottom of the heat exchange shell (1). The bottom of the connecting block (402) is fixedly connected to the top of the mounting frame (401) through a rubber column (403). A second spring (404) is sleeved on the outer wall of the rubber column (403). Several counterweights (405) are fixedly installed at the bottom of the mounting frame (401).

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