Marine cooling device with leakage-proof sealing structure

Abstract

The utility model relates to the technical field of connection and sealing of cooling devices, in particular to a marine cooling device with a leakage-proof sealing structure. The cooling device comprises a cooling cylinder, two water passing pipes are installed on the side wall of the cooling cylinder, a connecting pipe is arranged at one end of each water passing pipe, the water passing pipes and the connecting pipes are in sealed connection through a sealing mechanism, the sealing mechanism comprises a bearing ring fixed to one end of each connecting pipe and a hollow circular truncated cone, and the hollow circular truncated cones are arranged on the sides, away from the connecting pipes, of the bearing rings; a sleeve is fixed to one end of the water passing pipe, the radius of the sleeve is larger than that of the water passing pipe, and one end of the connecting pipe is inserted into the sleeve. The sealing ring grooves are formed in the side wall of the conical hollow circular truncated cone and the side wall of the inclined ring surface, and the bearing ring is pressed and covered through the locking mechanism, so that the hollow circular truncated cone and the inclined ring surface are in tight contact, the rubber ring is prevented from being in direct contact with river water or seawater, and corrosion of the river water or seawater to the rubber ring is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cooling device connection and sealing technology, specifically to a marine cooling device with a leak-proof sealing structure. Background Technology

[0002] The function of marine cooling systems is to reduce problems during the operation of marine diesel engines and ensure that the diesel engines can be used normally at normal temperatures. The diesel engine cooling system includes an internal circulation system and an external circulation system. The internal and external circulation systems exchange heat through the cooling system. The internal circulation system usually circulates pure fresh water or other solutions that facilitate heat exchange, while the external circulation system directly uses external water sources, such as river water or seawater. Neither river water nor seawater can directly enter the diesel engine. Instead, the pure water in the internal circulation system absorbs the heat generated by the operation of the diesel engine parts, and then the pure water carries the heat to the cooling system for heat exchange. The heated river water or seawater is then discharged from the hull, thus cooling the diesel engine.

[0003] Both river water and seawater are corrosive. When cooling devices connect to the water source, flanges and gaskets are used for connection. When the flanges squeeze the gaskets, the gaskets are in direct contact with the river water or seawater. Substances in the river water or seawater will corrode the rubber gaskets, causing them to harden and lose their sealing effect. The rubber gaskets that have lost their sealing effect cannot stop the flow of river water or seawater, thus affecting the normal use of the cooling device. Utility Model Content

[0004] The purpose of this invention is to provide a marine cooling device with a leak-proof sealing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a marine cooling device with a leak-proof sealing structure, including a cooling cylinder. Two water pipes are installed on the side wall of the cooling cylinder. A connecting pipe is provided at one end of each water pipe. The water pipes and the connecting pipe are sealed together by a sealing mechanism. The sealing mechanism includes a receiving ring fixed to one end of the connecting pipe and a hollow truncated cone. The hollow truncated cone is located on the side of the receiving ring away from the connecting pipe. A sleeve is fixed to one end of the water pipe, and the radius of the sleeve is larger than the radius of the water pipe. One end of the connector is inserted into the inside of the sleeve, and a first receiving ring platform is provided inside the sleeve. The first receiving ring platform has an inclined ring surface that is inclined towards the axis of the water pipe near the axis. The outer arc surface of the hollow truncated cone is in close contact with the inclined ring surface. Several sealing ring grooves are provided on the side walls where the inclined ring surface and the hollow truncated cone are in contact. Rubber rings are installed in the sealing ring grooves. A locking mechanism is provided on the connecting pipe. The locking mechanism presses the receiving ring so that the rubber ring seals the gap between the hollow truncated cone and the inclined ring surface.

[0006] As a further improvement to this technical solution, a second receiving ring platform is provided at the lower end of the inclined annular surface near the axis of the water pipe, and a pressing platform is provided at the bottom of the hollow truncated cone. When the hollow truncated cone and the inclined annular surface are in contact, the second receiving ring platform and the pressing platform are in close contact.

[0007] As a further improvement to this technical solution, the locking mechanism includes a slip ring that is slidably sleeved on the connecting pipe. Several pressing blocks are fixed in a ring array on the outer side wall of the slip ring near the receiving ring. Several arc-shaped pressure strips are fixed in a ring array inside the sleeve away from the water pipe.

[0008] As a further improvement to this technical solution, the number of the arc-shaped pressure strips and the lower pressure blocks are the same, the arc center angles corresponding to the arc-shaped pressure strips and the lower pressure blocks are the same, and several arc-shaped pressure strips and lower pressure blocks are combined to form a ring.

[0009] As a further improvement to this technical solution, the outer radii of the slip ring and the receiving ring are the same, and the inner radii of the receiving ring and the arc-shaped pressure strip are the same, while the outer radii of the lower pressure block and the inner radii of the sleeve are the same.

[0010] As a further improvement to this technical solution, the side of the arc-shaped pressure strip near the water pipe and the side of the lower pressure block away from the receiving ring are both provided with inclined surfaces. The lower pressure block enters the interior of the sleeve through the two arc-shaped pressure strips. When the slip ring rotates in the sleeve, the upper side of the lower pressure block contacts the bottom of the arc-shaped pressure strip, and the arc-shaped pressure strip presses the lower pressure block into the sleeve.

[0011] As a further improvement to this technical solution, the locking mechanism further includes a fixing ring, which is slidably sleeved on the connecting pipe. The fixing ring is located on the side of the slip ring away from the receiving ring, and a number of arc-shaped inserts are fixed in a circular array on the side of the fixing ring close to the slip ring. The arc-shaped inserts have the same arc-center angle as the lower pressure block, and the arc radius of the arc-shaped inserts is the same as that of the lower pressure block. The arc-shaped inserts are inserted between two adjacent arc-shaped pressure strips.

[0012] As a further improvement to this technical solution, when the slip ring is installed inside the sleeve, its end away from the receiving ring and the end of the sleeve away from the water pipe are on the same plane, and an annular rubber pad is provided on the upper side of the first receiving ring platform. When the slip ring is installed inside the sleeve, the slip ring and the lower pressure block press against the annular rubber pad. When the arc-shaped insert plate is inserted into the inside of the sleeve, the arc-shaped insert plate presses against the annular rubber pad. The fixing ring is fixed to the top of the sleeve by several bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this marine cooling device with a leak-proof sealing structure, sealing grooves are opened on the side walls of the conical hollow frustum and the oblique annular surface. A locking mechanism presses the receiving ring, ensuring tight contact between the hollow frustum and the oblique annular surface. This prevents the rubber ring from directly contacting river or seawater, reducing corrosion. Simultaneously, an annular rubber gasket is installed inside the sleeve. When the locking mechanism presses the receiving ring, it also presses the annular rubber gasket, sealing the gap between the receiving ring and the sleeve. This further seals the connection between the water pipe and the connecting pipe, preventing river or seawater from leaking out and ensuring the normal operation of the cooling device and the proper heat dissipation of the diesel engine. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is one of the schematic diagrams of the sealing mechanism structure of a utility model;

[0017] Figure 3 This is the second schematic diagram of the sealing mechanism structure of the utility model;

[0018] Figure 4 This is an exploded structural diagram of the sealing mechanism of a utility model.

[0019] Figure 5 This is a cross-sectional structural diagram of the sleeve and water pipe of the utility model.

[0020] Figure 6 This is a schematic cross-sectional view of the sealing mechanism of the utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Cooling cylinder; 2. Water pipe; 3. Connecting pipe; 31. Receiving ring; 32. Hollow truncated cone; 4. Sleeve; 41. Arc-shaped pressure strip; 42. First receiving ring platform; 43. Inclined ring surface; 44. Second receiving ring platform; 5. Fixing ring; 51. Arc-shaped insert plate; 6. Slip ring; 61. Lower pressure block; 7. Rubber ring; 8. Annular rubber pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Example 1

[0026] Please see Figures 1-6 As shown, this embodiment provides a marine cooling device with a leak-proof sealing structure, including a cooling cylinder 1. The cooling cylinder 1 has a hollow structure and several heat exchange pipes are installed inside. Both ends of the cooling cylinder 1 are connected to pipes for internal circulation in a diesel engine. The liquid circulating in the diesel engine exchanges heat with the liquid inside the cooling cylinder 1 through the heat exchange pipes. Two water pipes 2 are installed on the side wall of the cooling cylinder 1. One end of the water pipe 2 is provided with a connecting pipe 3. The water pipe 2 and the connecting pipe 3 are sealed together by a sealing mechanism. One of the connecting pipes 3 injects external river water or seawater into the cooling cylinder 1 through the water pipe 2, while the other water pipe 2 and the connecting pipe 3 transport the water inside the cooling cylinder 1 that has exchanged heat with the heat exchange pipes to the outside.

[0027] Currently, the sealing mechanism between water pipe 2 and connecting pipe 3 is usually a flange with a rubber gasket. The inner ring of the rubber gasket will be in direct contact with the river water or seawater in the pipe. Substances in the river water or seawater will corrode the rubber gasket, causing it to harden and lose its sealing effect. When the gasket loses its sealing effect, the river water or seawater will leak out.

[0028] To improve the sealing effect between the water pipe 2 and the connecting pipe 3, this solution improves the sealing mechanism. The improvement includes a receiving ring 31 fixed to one end of the connecting pipe 3 and a hollow frustum 32. The hollow frustum 32 is positioned on the side of the receiving ring 31 away from the connecting pipe 3, and its large base is fixed to the receiving ring 31. A sleeve 4 is fixed to one end of the water pipe 2, with a radius larger than that of the water pipe 2. The radius of the receiving ring 31 is smaller than that of the sleeve 4. The connecting pipe 3 is... The connecting pipe 3 is inserted into the sleeve 4, and a first receiving ring platform 42 is provided inside the sleeve 4. The first receiving ring platform 42 has an inclined annular surface 43 near the axis, tilted towards the axis of the water pipe 2. A second receiving ring platform 44 is provided at the lower end of the inclined annular surface 43 near the axis of the water pipe 2. When one end of the connecting pipe 3 is inserted into the sleeve 4, the outer arc surface of the hollow frustum 32 and the inclined annular surface 43 are in close contact. Several sealing ring grooves are provided on the sidewalls where the inclined annular surface 43 and the hollow frustum 32 contact each other. A sealing ring groove is installed in each sealing ring groove. Equipped with a rubber ring 7, when the connecting pipe 3 is inserted into the sleeve 4, the hollow frustum 32 and the inclined annular surface 43 compress the rubber ring 7, sealing the gap between the inclined annular surface 43 and the hollow frustum 32. Simultaneously, a locking mechanism is provided on the connecting pipe 3, which presses against the receiving ring 31, bringing the hollow frustum 32 closer to the inclined annular surface 43. The hollow frustum 32 and the inclined annular surface 43 then compress the rubber ring 7, sealing the gap between the hollow frustum 32 and the inclined annular surface 43. At this time, the sidewall of the hollow frustum 32 and the inclined annular surface 43... The annular surface 43 is in contact with the hollow truncated cone 32, and a pressing platform is provided at the bottom of the hollow truncated cone 32. When the hollow truncated cone 32 and the inclined annular surface 43 are in contact, the second receiving ring platform 44 and the pressing platform are in close contact. At this time, because the pressing platform and the second receiving ring platform 44 are in contact, the direct contact between river water or seawater and the rubber ring 7 is reduced, and the corrosion of the rubber ring 7 by seawater or river water is reduced. At the same time, several rubber rings 7 are provided. When one of the rubber rings 7 is corroded and damaged, the other rubber rings 7 will block the river water or seawater, ensuring that the river water or seawater does not leak and ensuring the normal use of the cooling device.

[0029] The locking mechanism includes a slip ring 6 slidably fitted onto the connecting pipe 3. Several downward pressure blocks 61 are fixed in a circular array on the outer wall of the slip ring 6 near the receiving ring 31. Several arc-shaped pressure strips 41 are fixed in a circular array inside the sleeve 4 away from the water pipe 2. The number of arc-shaped pressure strips 41 and downward pressure blocks 61 are the same, and the arc angles corresponding to the arc-shaped pressure strips 41 and downward pressure blocks 61 are the same. Several arc-shaped pressure strips 41 and downward pressure blocks 61 combine to form a ring. The outer radius of the receiving ring 31 is the same as that of the inner circle of the receiving ring 31 and the inner circle of the arc-shaped pressure strip 41. The outer circle radius of the lower pressure block 61 is the same as that of the inner circle radius of the sleeve 4. When one end of the connecting pipe 3 is inserted into the sleeve 4, the outer side wall of the receiving ring 31 and the inner side wall of the arc-shaped pressure strip 41 slide in contact. At the same time, when the slip ring 6 enters the interior of the sleeve 4, the outer side wall of the slip ring 6 also slides in contact with the arc-shaped pressure strip 41. Then the slip ring 6 contacts the side wall of the receiving ring 31.

[0030] Meanwhile, as the slip ring 6 enters the sleeve 4, the lower pressure block 61 passes between the two arc-shaped pressure strips 41. The two ends of the lower pressure block 61 slide in contact with the side walls of the ends of the arc-shaped pressure strips 41. An annular rubber pad 8 is provided on the upper side of the first receiving ring platform 42. When the slip ring 6 is installed inside the sleeve 4, the lower pressure block 61 presses against the annular rubber pad 8. The annular rubber pad 8 seals the gap between the receiving ring 31 and the sleeve 4. When all the rubber rings 7 fail, the annular rubber pad 8 can also seal the water pipe 2 and the connecting pipe 3, further improving the safety of the device and extending its service life.

[0031] To improve the tightness of the contact between the hollow frustum 32 and the inclined annular surface 43, inclined surfaces are provided on the side of the arc-shaped pressure strip 41 near the water pipe 2 and on the side of the lower pressure block 61 away from the receiving ring 31. The lower pressure block 61 enters the interior of the sleeve 4 through the two arc-shaped pressure strips 41. When the slip ring 6 rotates in the sleeve 4, the lower pressure block 61 gradually moves directly below the arc-shaped pressure strip 41. When one end of the lower pressure block 61 moves to the other end of the arc-shaped pressure strip 41, the upper side of the lower pressure block 61 and the bottom of the arc-shaped pressure strip 41 are aligned. Upon contact, the arc-shaped pressure strip 41 presses the lower pressure block 61 into the sleeve 4, and the pressed lower pressure block 61 presses the annular rubber pad 8. The lower pressure block 61 drives the slip ring 6, causing the slip ring 6 to press the receiving ring 31. At this time, the receiving ring 31 drives the hollow frustum 32 to press the rubber ring 7, and the annular rubber pad 8 is pressed between the receiving ring 31 and the sleeve 4, thus achieving the sealing of the gap between the rubber ring 7 and the inclined ring surface 43 and the hollow frustum 32, as well as the sealing of the gap between the annular rubber pad 8 and the receiving ring 31 and the sleeve 4.

[0032] After the slip ring 6 is fixed in position, to ensure that the slip ring 6 will not shift and to ensure the pressing effect of the slip ring 6 and the lower pressure block 61 on the rubber ring 7 and the annular rubber pad 8, the locking mechanism also includes a fixing ring 5. The fixing ring 5 is slidably sleeved on the connecting pipe 3, and the fixing ring 5 is located on the side of the slip ring 6 away from the receiving ring 31. On the side of the fixing ring 5 closest to the slip ring 6, several arc-shaped inserts 51 are fixed in a circular array. The arc center angle of the arc inserts 51 is the same as that of the lower pressure block 61. The arc radius of the arc-shaped insert plate 51 and the lower pressure block 61 are the same, that is, the thickness of the arc-shaped insert plate 51 and the lower pressure block 61 is the same. The arc-shaped insert plate 51 is inserted between two adjacent arc-shaped pressure strips 41. When the arc-shaped insert plate 51 is inserted between two arc-shaped pressure strips 41, because the lower pressure block 61 is directly below the arc-shaped pressure strip 41, the arc-shaped insert plate 51 also restricts the position of the lower pressure block 61, so that the slip ring 6 will not rotate inside the sleeve 4, ensuring the pressing effect of the slip ring 6 on the receiving ring 31.

[0033] Meanwhile, when the slip ring 6 is installed inside the sleeve 4, its end away from the receiving ring 31 and the end of the sleeve 4 away from the water pipe 2 are on the same plane. When the arc-shaped insert plate 51 is inserted into the sleeve 4, the arc-shaped insert plate 51 presses against the annular rubber pad 8, further improving the pressing effect on the annular rubber pad 8. The fixing ring 5 is fixed to the top of the sleeve 4 by several bolts. At this time, the water pipe 2 and the connecting pipe 3 are connected.

[0034] Through the close contact between the hollow frustum 32 and the inclined annular surface 43, as well as the close contact between the extrusion platform and the second receiving ring platform 44, the rubber ring 7 is prevented from directly contacting river water or seawater, reducing the corrosion of the rubber ring 7 by river water or seawater. At the same time, when the locking mechanism presses the receiving ring 31, it also presses the annular rubber pad 8, so that the annular rubber pad 8 seals the gap between the receiving ring 31 and the sleeve 4, further sealing the connection between the water pipe 2 and the connecting pipe 3, preventing river water or seawater from flowing out from the gap between the water pipe 2 and the connecting pipe 3, ensuring the normal use of the cooling device, and ensuring the normal heat dissipation of the diesel engine.

[0035] During installation:

[0036] The staff first put several rubber rings 7 into the sealing ring groove on the hollow truncated cone 32, put the slip ring 6 and the fixed ring 5 into the connecting pipe 3, and put the annular rubber pad 8 into the sleeve 4 so that the annular rubber pad 8 and the first receiving ring platform 42 are in contact.

[0037] Then, one end of the connecting pipe 3 is inserted into the sleeve 4, so that one side of the rubber ring 7 enters the sealing ring groove of the inclined ring surface 43. Then, the slip ring 6 is inserted into the sleeve 4, and the lower pressure block 61 passes between the two arc-shaped pressure strips 41.

[0038] After the slip ring 6 and the receiving ring 31 come into contact, the worker rotates the slip ring 6. At this time, the lower pressure block 61 and the arc-shaped pressure strip 41 have not yet pressed into contact, and the slip ring 6 has not yet pressed down on the annular rubber pad 8 and the connecting pipe 3. During the rotation of the slip ring 6, because the rubber ring 7 and the annular rubber pad 8 have thickness, one end of the lower pressure block 61 will contact the lower side of the arc-shaped pressure strip 41. At this time, the worker inserts one end of the metal rod into the gap between the lower pressure block 61 and the arc-shaped pressure strip 41. This gap is the distance generated between the lower pressure block 61 and the arc-shaped pressure strip 41 rotating in the opposite direction when the lower pressure block 61 rotates. Then, the worker presses the other end of the metal rod to make the metal rod push the lower pressure block 61 to rotate. During this process, the slip ring 6 begins to press the receiving ring 31, and the lower pressure block 61 presses down on the annular rubber pad 8.

[0039] After the lower pressure block 61 and the arc-shaped pressure strip 41 are aligned, the inclined ring surface 43 and the hollow frustum 32 are in contact, the extrusion platform and the second receiving ring platform 44 are in contact, the top of the slip ring 6 and the end of the sleeve 4 away from the water pipe 2 are flush, the rubber ring 7 is pressed to seal the gap between the hollow frustum 32 and the inclined ring surface 43, and the annular rubber pad 8 seals the gap between the receiving ring 31 and the sleeve 4. Then the arc-shaped insert plate 51 is inserted into the arc-shaped pressure strip 41. The position of the lower pressure block 61 is restricted by the arc-shaped insert plate 51 to prevent the lower pressure block 61 from rotating. Finally, the arc-shaped insert plate 51 is fixed to the arc-shaped pressure strip 41 with bolts to further press the annular rubber pad 8.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A marine cooling device with a leak-proof sealing structure, comprising a cooling cylinder (1), wherein two water pipes (2) are installed on the side wall of the cooling cylinder (1), and a connecting pipe (3) is provided at one end of each water pipe (2), characterized in that: The water pipe (2) and the connecting pipe (3) are sealed together by a sealing mechanism. The sealing mechanism includes a receiving ring (31) fixed to one end of the connecting pipe (3) and a hollow truncated cone (32). The hollow truncated cone (32) is located on the side of the receiving ring (31) away from the connecting pipe (3). One end of the water pipe (2) is fixed with a sleeve (4). The radius of the sleeve (4) is larger than that of the water pipe (2). One end of the connecting pipe (3) is inserted into the inside of the sleeve (4), and a first receiving ring platform (42) is provided inside the sleeve (4). The first receiving ring platform (42) is provided with an inclined ring surface (43) that is inclined towards the axis of the water pipe (2) near the axis. The outer arc surface of the hollow truncated cone (32) and the inclined ring surface (43) are in close contact. Several sealing ring grooves are provided on the side walls where the inclined ring surface (43) and the hollow truncated cone (32) are in contact with each other. Rubber rings (7) are installed in the sealing ring grooves. A locking mechanism is provided on the connecting pipe (3). The locking mechanism presses the receiving ring (31) so that the rubber rings (7) seal the gap between the hollow truncated cone (32) and the inclined ring surface (43).

2. The marine cooling device with a leak-proof sealing structure according to claim 1, characterized in that: A second receiving ring platform (44) is provided at the lower end of the inclined annular surface (43) near the axis of the water pipe (2), and a pressing platform is provided at the bottom of the hollow truncated cone (32). When the hollow truncated cone (32) and the inclined annular surface (43) are in contact, the second receiving ring platform (44) and the pressing platform are in close contact.

3. The marine cooling device with a leak-proof sealing structure according to claim 1, characterized in that: The locking mechanism includes a sliding ring (6) that is slidably sleeved on the connecting pipe (3). Several pressure blocks (61) are fixed in a ring array on the outer side wall of the sliding ring (6) near the receiving ring (31). Several arc-shaped pressure strips (41) are fixed in a ring array inside the sleeve (4) away from the water pipe (2).

4. The marine cooling device with a leak-proof sealing structure according to claim 3, characterized in that: The number of the arc-shaped pressure strips (41) and the lower pressure blocks (61) are the same, the arc-shaped pressure strips (41) and the lower pressure blocks (61) have the same arc center angle, and several arc-shaped pressure strips (41) and lower pressure blocks (61) are combined to form a ring.

5. The marine cooling device with a leak-proof sealing structure according to claim 3, characterized in that: The outer radii of the slip ring (6) and the receiving ring (31) are the same, and the inner radii of the receiving ring (31) and the arc-shaped pressure strip (41) are the same. The outer radii of the lower pressure block (61) are the same as the inner radii of the sleeve (4).

6. The marine cooling device with a leak-proof sealing structure according to claim 3, characterized in that: The curved pressure strip (41) has an inclined surface on the side near the water pipe (2) and the side of the lower pressure block (61) away from the receiving ring (31). The lower pressure block (61) enters the interior of the sleeve (4) through the two curved pressure strips (41). When the slip ring (6) rotates in the sleeve (4), the upper side of the lower pressure block (61) contacts the bottom of the curved pressure strip (41), and the curved pressure strip (41) presses the lower pressure block (61) into the sleeve (4).

7. The marine cooling device with a leak-proof sealing structure according to claim 3, characterized in that: The locking mechanism also includes a fixing ring (5), which is slidably sleeved on the connecting pipe (3). The fixing ring (5) is located on the side of the slip ring (6) away from the receiving ring (31). A number of arc-shaped inserts (51) are fixed in a circular array on the side of the fixing ring (5) close to the slip ring (6). The arc center angle of the arc-shaped insert (51) is the same as that of the lower pressure block (61). The arc radius of the arc-shaped insert (51) and the lower pressure block (61) are the same. The arc-shaped insert (51) is inserted between two adjacent arc-shaped pressure strips (41).

8. The marine cooling device with a leak-proof sealing structure according to claim 7, characterized in that: When the slip ring (6) is installed inside the sleeve (4), its end away from the receiving ring (31) and the end of the sleeve (4) away from the water pipe (2) are on the same plane, and an annular rubber pad (8) is provided on the upper side of the first receiving ring platform (42). When the slip ring (6) is installed inside the sleeve (4), the slip ring (6) and the lower pressure block (61) press against the annular rubber pad (8). When the arc-shaped insert plate (51) is inserted into the sleeve (4), the arc-shaped insert plate (51) presses against the annular rubber pad (8). The fixing ring (5) is fixed to the top of the sleeve (4) by several bolts.

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