Underwater power propulsion system

Abstract

The invention discloses an underwater power propulsion system, which relates to the technical field of underwater operation, and comprises: a fixing band used for connecting a human trunk and provided with a plurality of detachable connecting structures in the length direction; the storage structure is arranged in the fixing band or connected to the outer side of the fixing band through a detachable connecting structure, and one end of the storage structure is provided with a detachable waterproof sealing structure used for sealing the storage structure; the power unit is respectively connected to the fixing belt and the legs of a person through a detachable connecting structure; the control module is connected with the power unit to control the output power of the power unit; the power module is arranged in the storage structure, the output end of the power module is connected with a power-off switch, the power-off switch is arranged at the end of the waterproof sealing structure and electrically connected with the control module, manual power off is conducted through the power-off switch when the power module breaks down, and different storage structures are further arranged to provide different power module carrying modes; and the underwater propulsion system is wider in application range.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater operations, and in particular to an underwater power propulsion system. Background Art

[0002] At present, the technology of underwater power propulsion system is gradually maturing, and underwater power propulsion system is gradually coming into our field of vision. People can use it as underwater stealth vehicles, and in the military aspect, it is even included in the soldiers' marching equipment.

[0003] When the underwater power propulsion system is used as the marching equipment of the soldiers, since the soldiers' marching equipment has very high requirements for convenience when carrying, it is also required to be able to be quickly removed from the body when switching from underwater marching to land marching to avoid affecting the land march, and the safety performance and endurance performance during use are one of the key requirements; the structure of the existing underwater power propulsion system still cannot solve the above problems at the same time, which is mainly manifested in the defects of the component connection method of the underwater power propulsion system, the defects of the battery setting method in the system and the safety defects of the power module during use, which makes the existing underwater power propulsion system difficult to be compatible with marching equipment. Summary of the invention

[0004] In view of the technical defects existing in the background technology, the present invention proposes an underwater power propulsion system, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows: The present invention discloses an underwater power propulsion system, comprising: a fixing belt, which is used to connect the human body trunk and is provided with a plurality of detachable connection structures in the length direction; a storage structure, which is arranged inside the fixing belt or connected to the outside of the fixing belt through the detachable connection structure, and one end of the storage structure is provided with a detachable waterproof sealing structure for closing the storage structure; a power unit, which is respectively connected to the fixing belt and the human leg through the detachable connection structure; a control module, which is connected to the power unit to control the output power of the power unit; a power supply module, which is arranged in the storage structure and has a power-off switch connected to its output end, and the power-off switch is arranged at the end of the waterproof sealing structure and is electrically connected to the control module.

[0005] As a further embodiment of the present invention, the storage structure is a cavity inside the fixing belt, the power module is composed of a plurality of batteries, the plurality of batteries are arranged in sequence in the cavity, and after the plurality of batteries are connected in series through a circuit, the circuit penetrates the waterproof sealing structure to achieve connection with the power-off switch, the cavity is provided with an inner lining made of waterproof material, and the two end faces with the largest area of ​​the battery are parallel to the surface of the fixing belt.

[0006] As a further embodiment of the present invention, the waterproof sealing structure is a waterproof zipper, the chain edge of the waterproof zipper is sewn to the lining, and a circuit in which a plurality of batteries are connected in series passes through the surface of the lining and the fixing belt in sequence from the side away from the waterproof zipper, and the power-off switch is fixedly connected to the surface of the fixing belt away from the human body, and the power-off switch is a plug-in small circuit breaker.

[0007] As a further embodiment of the present invention, a fixing block is provided on the surface of the fixing belt away from the human body, the power-off switch is fixedly connected to the surface of the fixing block, the surface of the power-off switch located outside the control end thereof is provided with a first annular convex edge, the first convex edge is provided with a first external thread, the surface of the fixing block located outside the power-off switch is provided with a first connecting head, the first connecting head is connected to a first connecting belt, the end of the first connecting belt away from the first connecting head is fixedly connected to a first sealing cover, the inner wall of the first sealing cover is provided with a circle of first internal threads, the first sealing cover is connected to the outside of the first convex edge by matching the first internal threads with the first external threads, a first sealing ring is provided in the interior of the first sealing cover between the outside of the first internal threads and the end face of the first sealing cover, and the first sealing ring is squeezed against the end face of the first convex edge by the end face of the first sealing cover when the first sealing cover is matched on the outside of the first convex edge.

[0008] As a further embodiment of the present invention, the storage structure is a cylinder, the outer wall of the cylinder is surrounded by a number of detachable connecting structures and then fixed to a fixing belt, the power module is composed of a number of batteries, and the several power modules are arranged in sequence in the cylinder, the two end faces with the largest areas in the power module are parallel to the axial end faces of the cylinder, the waterproof sealing structure is detachably matched to the port of the cylinder, and after the several batteries are connected in series through a circuit, the circuit penetrates the waterproof sealing structure to achieve connection with the power-off switch.

[0009] As a further embodiment of the present invention, the waterproof sealing structure is an end cover, the port of the cylinder is connected to one end of the end cover by means of internal and external threads, a circle of sealing strip is provided at the port of the cylinder, the power-off switch is fixedly connected to the end surface of the end cover away from the cylinder and connected to the line passing through the end cover, and the power-off switch is a plug-in small circuit breaker.

[0010] As a further embodiment of the present invention, the power-off switch is fixedly connected to the end face of the end cover away from the cylinder body, the surface of the power-off switch located on the outside of the control end thereof is provided with a ring-shaped second convex edge, the second convex edge is provided with a second external thread, the surface of the end cover located on the outside of the power-off switch is provided with a second connector, the second connector is connected to a second connecting belt, the end of the second connecting belt away from the second connector is fixedly connected to a second sealing cover, the inner wall of the second sealing cover is provided with a circle of second internal threads, the second sealing cover is connected to the outside of the second convex edge by the cooperation of the second internal threads and the second external threads, the second sealing cover is provided with a second sealing ring in the interior between the outside of the second internal threads and the end face of the second sealing cover, and the second sealing ring is squeezed against the end face of the second convex edge by the end face of the second sealing cover when the second sealing cover is cooperated with the outside of the second convex edge.

[0011] As a further embodiment of the present invention, the detachable connection structure is a third connection belt that is fixed by snap-fitting.

[0012] As a further embodiment of the present invention, the control module includes a rod body, a circuit board with an integrated chip and a control key, the circuit board is arranged in the rod body, the control key is arranged on the surface of the rod body and is electrically connected to the circuit board, one end of the rod body is provided with a sub-docking terminal embedded in the circuit board, the docking column outer shell of the sub-docking terminal is provided with a sealing sleeve with an opening, the power-off switch is connected to at least two female docking terminals, a circle of sealing gaskets with openings are provided at the docking point between the female docking terminal and the sub-docking terminal, and the docking column of the female docking terminal is wrapped when the sub-docking terminal is not docked to the female docking terminal, the other end of the rod body is connected to a connecting wire through a joint, one end of the connecting wire passes through the rod body and is electrically connected to the circuit board, the other end of the connecting wire is electrically connected to the power unit, and at least two third connectors are provided on the surface of the rod body, and a fourth connecting belt is connected between the two third connectors.

[0013] As a further embodiment of the present invention, the power unit includes a power source formed by a motor driving a propeller to rotate and a housing, and the end and side wall of the housing are connected with a detachable connection structure.

[0014] The beneficial effects of the present invention are as follows: the underwater power propulsion system can manually cut off the power through the power-off switch when a power module fails to function, thereby preventing dangerous situations from occurring. Different storage structures are also provided to cope with the power module carrying requirements in different scenarios. Different storage structures have different performances in terms of impact resistance and convenience of carrying the power module. The number of batteries in the power module can also be increased or decreased according to actual use needs, thereby enabling the underwater power propulsion system to meet the use requirements of different users during underwater operations, thereby widening the scope of application of the underwater power propulsion system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the first underwater power propulsion system.

[0016] Figure 2 Schematic diagram of the arrangement of batteries when built into the fixing belt.

[0017] Figure 3 This is a schematic diagram of the power-off switch structure in the first underwater propulsion system.

[0018] Figure 4 This is a schematic diagram of the structure of the second underwater power propulsion system.

[0019] Figure 5 This is a schematic diagram of the arrangement of batteries when they are placed outside the fixing belt.

[0020] Figure 6 This is a schematic diagram of the power-off switch structure in the second underwater propulsion system.

[0021] Figure 7 Schematic diagram of the external structure of the control module.

[0022] Figure 8 Schematic diagram of the internal structure of the control module.

[0023] Fig. 9 A schematic diagram of the structure of the power unit.

[0024] In the figure, 1, fixing belt; 2, detachable connection structure; 3, storage structure; 31, cavity; 32, cylinder; 4, waterproof sealing structure; 41, waterproof zipper; 42, lining; 43, fixing block; 44, first convex edge; 441, first external thread; 45, first connector; 46, first connecting belt; 47, first sealing cover; 471, first internal thread; 48, first sealing ring; 49, end cover; 410, sealing strip; 411, second convex edge; 4111, second external thread; 412, second connector; 41 3. Second connecting belt; 414. Second sealing cover; 4141. Second internal thread; 415. Second sealing ring; 5. Power unit; 51. Motor; 52. Propeller; 53. Housing; 6. Control module; 61. Third connecting belt; 62. Rod body; 63. Circuit board; 64. Control key; 65. Sub-docking terminal; 66. Sealing sleeve; 67. Sealing gasket; 68. Connecting wire; 69. Third connector; 610. Fourth connecting belt; 7. Power module; 71. Battery; 8. Power-off switch; 81. Female docking terminal. DETAILED DESCRIPTION

[0025] The present invention discloses an underwater power propulsion system, such as Figure 1 , Figure 3 , Figure 4 As shown in the figure, it includes: a fixing belt 1 used to connect the human body trunk and provided with several detachable connecting structures 2 in the length direction, a storage structure 3 arranged inside the fixing belt 1 or connected to the outside of the fixing belt 1 through the detachable connecting structure 2, one end of the storage structure 3 is provided with a detachable waterproof sealing structure 4 for closing the storage structure 3, a power unit 5 respectively connected to the fixing belt 1 and the human leg through the detachable connecting structure 2, a control module 6 connected to the power unit 5 for controlling the output power of the power unit 5, a power module 7 arranged in the storage structure 3 and having a power-off switch 8 connected to its output end, and the power-off switch 8 is arranged at the end of the waterproof sealing structure 4 and is electrically connected to the control module 6.

[0026] It should be noted that the fixing belt 1 is connected to the human body through the detachable connecting structures 2 at both ends thereof, serving as the hub of the connecting components in the underwater power propulsion system, and the storage structure 3 is used to store the power module 7. The storage structure 3 can be inside the fixing belt 1, thereby forming a structure in which the fixing belt 1 carries the power module 7 internally, and the storage structure 3 can also be connected to the storage structure 3 through the detachable connecting structure 2 to form a structure in which the fixing belt 1 carries the power module 7 externally. In response to the carrying requirements of the power module 7 in different scenarios, different storage structures 3 have different performances of the power module 7 in terms of impact resistance and the convenience of carrying the power module 7. The number of batteries 71 in the power module 7 can also be increased or decreased according to actual use needs; the control module 6 can adjust the working power of the power unit 5, thereby adjusting the speed of the underwater operator's underwater movement; the underwater power propulsion system can manually cut off the power through the power-off switch 8 when the power module 7 fails to prevent dangerous situations; so that the underwater power propulsion system can meet the use requirements of different users during underwater operations, making the underwater power propulsion system more widely applicable.

[0027] It needs to be further explained that if Figure 1 and Figure 2 As shown in combination, the storage structure 3 is a cavity 31 inside the fixing belt 1, and the power module 7 is composed of a plurality of batteries 71, and the plurality of batteries 71 are arranged in sequence in the cavity 31, and after the plurality of batteries 71 are connected in series through a circuit, the circuit then penetrates the waterproof sealing structure 4 to achieve connection with the power-off switch 8, and an inner lining 42 made of waterproof material is provided in the cavity 31, and the two end faces with the largest area in the battery 71 are parallel to the surface of the fixing belt 1.

[0028] Among them, after the battery 71 is built into the cavity 31 inside the fixing belt 1 and the battery 71 is placed in a manner that the two end faces with the largest area in the battery 71 are parallel to the surface of the fixing belt 1, the battery 71 in the fixing belt 1 will not cause the fixing belt 1 to bulge, thereby avoiding obstruction to the body activities of the underwater operator, so that the volume of the energy part of the entire underwater power propulsion system can be greatly reduced, which is more conducive to the underwater operator to carry the underwater power propulsion system. In addition, the underwater operator can adjust the number of batteries 71 in the cavity 31 according to the actual required battery life, while ensuring the battery life of the underwater power propulsion system, taking into account the convenience of carrying the underwater power propulsion system and the working sensitivity during underwater operations; and the setting of the lining 42 can form a sealed semi-enclosed structure on the outer edge of the cavity 31, so that water will not enter the position of the battery 71 in the fixing belt 1.

[0029] Specifically, Figure 1As shown, the waterproof sealing structure 4 is a waterproof zipper 41, the chain edge of the waterproof zipper 41 is sewn to the lining 42, and the circuit of several batteries 71 connected in series passes through the lining 42 and the surface of the fixing belt 1 in sequence from the side away from the waterproof zipper 41, and the power-off switch 8 is fixedly connected to the surface of the fixing belt 1 away from the human body, and the power-off switch 8 is a plug-in small circuit breaker.

[0030] Among them, after the chain edge of the waterproof zipper 41 is sewn to the lining 42, the two form a structure surrounding the battery 71 at the outer edge of the cavity 31, thereby providing sealing protection for the battery 71, and the waterproof zipper 41 can control the opening and closing of the port of the cavity 31 on the fixing belt 1, and the battery 71 can be placed in the cavity 31 after it is pulled open, and the setting position of the power-off switch 8 will not affect the opening and closing of the waterproof zipper 41.

[0031] More specifically, if Figure 1 and Figure 3 As shown in combination, a fixing block 43 is provided on the surface of the fixing belt 1 away from the human body, the power-off switch 8 is fixedly connected to the surface of the fixing block 43, the surface of the power-off switch 8 located on the outer side of the control end thereof is provided with a ring-shaped first convex edge 44, the first convex edge 44 is provided with a first external thread 441, the surface of the fixing block 43 located on the outer side of the power-off switch 8 is provided with a first connector 45, the first connector 45 is connected to a first connecting belt 46, the end of the first connecting belt 46 away from the first connecting belt 45 is fixedly connected to a first sealing cover 47, the inner wall of the first sealing cover 47 is provided with a circle of first internal threads 471, the first sealing cover 47 is connected to the outer side of the first convex edge 44 through the cooperation of the first internal threads 471 and the first external threads 441, the first sealing cover 47 is provided with a first sealing ring 48 in the interior between the outer side of the first internal threads 471 and the end face of the first sealing cover 47, the first sealing ring 48 is pressed against the end face of the first convex edge 44 by the end face of the first sealing cover 47 when the first sealing cover 47 is cooperated with the outer side of the first convex edge 44.

[0032] Among them, when it is necessary to perform an emergency power-off through the power-off switch 8, the first sealing cover 47 can be unscrewed to expose the control end of the power-off switch 8, and the power transmission from the battery 71 to the power unit 5 can be disconnected by toggling the control end of the power-off switch 8, thereby realizing the emergency power-off operation; and when the first sealing cover 47 is matched on the outer side of the first convex edge 44, the first sealing ring 48 can be used to seal the gap at the matching position of the first sealing cover 47 and the first convex edge 44 to prevent water from entering the position where the control end of the power-off switch 8 is located, thereby avoiding water from corroding the control end of the power-off switch 8; and when the first sealing cover 47 is matched on the outer side of the first convex edge 44, a heat-sealing glue can be applied to the port of the first sealing cover 47 to seal the gap between the port of the first sealing cover 47 and the wall surface of the power-off switch 8, which not only prevents water from flowing in from the port of the first sealing cover 47, but also does not affect the operation of unscrewing the first sealing cover 47 from the outer side of the first convex edge 44.

[0033] It needs to be further explained that if Figure 4 and Figure 5 As shown in the combination, the storage structure 3 is a cylinder 32, the outer wall of the cylinder 32 is surrounded by a plurality of detachable connecting structures 2 and then fixed to the fixing belt 1, the power module 7 is composed of a plurality of batteries 71, and the plurality of power modules 7 are arranged in sequence in the cylinder 32, the two end faces with the largest areas in the power module 7 are parallel to the axial end faces of the cylinder 32, the waterproof sealing structure 4 is detachably matched to the port of the cylinder 32, and the plurality of batteries 71 are connected in series through a circuit, and then the circuit passes through the waterproof sealing structure 4 to realize connection with the power-off switch 8.

[0034] Among them, the power module 7 is stored in the cylinder 32, so that the power module 7 can be placed outside the fixing belt 1, and the impact resistance of the cylinder 32 itself can be used to form a protective structure outside the battery 71 to prevent the battery 71 from being damaged and dangerous under the impact of external force. Compared with the storage method of the power module 7 in which the power module 7 is built into the fixing belt 1, the storage method of the power module 7 in which the power module 7 is placed outside the fixing belt 1 through the cylinder 32 has a stronger protective effect on the power module 7; the cylinder 32 can be removed from the fixing belt 1 through the detachable connecting structure 2, so as to realize the switching of the storage method of external and internal power module 7; the setting form of the power module 7 in the cylinder 32 can make the space in the cylinder 32 be used as much as possible for the placement of the battery 71, and the number of batteries 71 placed in the cylinder 32 can also be adjusted according to the needs of actual use.

[0035] Specifically, Figure 5As shown, the waterproof sealing structure 4 is an end cover 49, the port of the cylinder 32 is connected to one end of the end cover 49 by means of internal and external threads, a circle of sealing strip 410 is provided at the port of the cylinder 32, the power-off switch 8 is fixedly connected to the end face of the end cover 49 away from the cylinder 32 and connected to the line passing through the end cover 49, and the power-off switch 8 is a plug-in small circuit breaker.

[0036] Among them, by setting the sealing strip 410, the gap existing at the matching position between the end cover 49 and the port of the cylinder 32 can be sealed to prevent water from entering the cylinder 32 and corroding the battery 71.

[0037] More specifically, if Figure 4~Figure 6 As shown in the combination, the power-off switch 8 is fixedly connected to the end face of the end cover 49 away from the cylinder 32, the surface of the power-off switch 8 located outside the control end thereof is provided with a second annular flange 411, the second flange 411 is provided with a second external thread 4111, the surface of the end cover 49 located outside the power-off switch 8 is provided with a second connector 412, the second connector 412 is connected to a second connecting belt 413, the end of the second connecting belt 413 away from the second connector 412 is fixedly connected to a second sealing cover 414, the second sealing cover 414 is provided with a second connecting head 413, and the second connecting head 413 is provided with a second sealing cover 414. The inner wall is provided with a circle of second internal thread 4141, and the second sealing cover 414 is connected to the outside of the second flange 411 through the cooperation of the second internal thread 4141 and the second external thread 4111. The second sealing cover 414 is located in the interior between the outside of the second internal thread 4141 and the end face of the second sealing cover 414. A second sealing ring 415 is provided. When the second sealing cover 414 is cooperated with the outside of the second flange 411, the second sealing ring 415 is squeezed against the end face of the second flange 411 by the end face of the second sealing cover 414.

[0038] Among them, when it is necessary to perform an emergency power-off through the power-off switch 8, the control end of the power-off switch 8 can be exposed by unscrewing the second sealing cover 414, and the power transmission from the battery 71 to the power unit 5 can be disconnected by toggling the control end of the power-off switch 8, thereby realizing the emergency power-off operation; and when the second sealing cover 414 is matched on the outer side of the second convex edge 411, the second sealing ring 415 can be used to seal the gap at the matching position of the second sealing cover 414 and the second convex edge 411 to prevent water from entering the position where the control end of the power-off switch 8 is located, thereby preventing water from corroding the control end of the power-off switch 8; and when the second sealing cover 414 is matched on the outer side of the second convex edge 411, a heat-sealing glue can be applied to the port of the second sealing cover 414 to seal the gap between the port of the second sealing cover 414 and the wall surface of the power-off switch 8, which not only prevents water from flowing in from the port of the second sealing cover 414, but also does not affect the operation of unscrewing the second sealing cover 414 from the outer side of the second convex edge 411.

[0039] It needs to be further explained that if Figure 1 and Figure 4 As shown in the figure, the detachable connection structure 2 is a third connection belt 61 fixed by snap-fitting.

[0040] Among them, the connection between the two ends of the fixing belt 1 can be achieved through the detachable connecting structure 2; the third connecting belt 61 can be wrapped around the outside of the storage structure 3 when the storage structure 3 is placed outside the fixing belt 1, and the storage structure 3 can be fixed to the outside of the fixing belt 1 through a snap fit to achieve external placement; the power unit 5 can also be bound to the legs of the underwater operator through the third connecting belt 61, and then the power unit 5 can be fixed through a snap fit; when the fixing belt 1, the storage structure 3 or the power unit 5 is removed from the underwater operator, the third connecting belt 61 can be quickly untied by releasing the snap fit, so that the fixing belt 1, the storage structure 3 or the power unit 5 can be quickly removed from the underwater operator.

[0041] It needs to be further explained that if Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown in the figure, the control module 6 includes a rod body 62, a circuit board 63 with an integrated chip, and a control key 64. The circuit board 63 is arranged in the rod body 62, and the control key 64 is arranged on the surface of the rod body 62 and is electrically connected to the circuit board 63. One end of the rod body 62 is provided with a sub-docking terminal 65 embedded in the circuit board 63, and the docking column outer shell of the sub-docking terminal 65 is provided with a sealing sleeve 66 with an opening. The power-off switch 8 is connected to at least two female docking terminals 81, and the docking of the female docking terminal 81 with the sub-docking terminal 65 A circle of sealing gasket 67 with an opening is provided at the rod body 62, and the docking column of the female docking terminal 81 is wrapped when the sub-docking terminal 65 is not docked to the female docking terminal 81. The other end of the rod body 62 is connected to a connecting wire 68 through a joint, one end of the connecting wire 68 passes through the rod body 62 and is electrically connected to the circuit board 63, and the other end of the connecting wire 68 is electrically connected to the power unit 5. At least two third connecting heads 69 are provided on the surface of the rod body 62, and a fourth connecting belt 610 is connected between the two third connecting heads 69.

[0042] Among them, pressing different control keys 64 can send different control signals to the chip, so that the chip sends different control instructions to the power unit 5, adjusts the working state of the power unit 5, and adjusts the power output of the power unit 5; when the sub-docking terminal 65 is docked with the female docking terminal 81, the two can be docked underwater through the sealing sleeve 66 and the sealing gasket 67, thereby realizing the hot plug operation of the battery 71; after the power unit 5 is removed from the fixing belt 1 and the sub-docking terminal 65 and the female docking terminal 81 are disconnected, the control module 6 can be hung on a person's arm through the fourth connecting belt 610, so as to facilitate the carrying of the control module 6.

[0043] It needs to be further explained that if Fig. 9 As shown, the power unit 5 includes a power source formed by a motor 51 driving a propeller 52 to rotate and a housing 53 , and the end and side wall of the housing 53 are connected with a detachable connection structure 2 .

[0044] Among them, the power unit 5 uses a motor 51 to drive the propeller 52 to rotate to provide power for underwater workers to navigate underwater. The structure is simple, and the detachable connecting structure 2 is set on the shell 53, so that the shell 53 can be detachably connected to the fixing belt 1 and the human leg, thereby realizing the rapid loading and unloading of the power unit 5 in the underwater power propulsion system and on the human body.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An underwater propulsion system, characterized in that: include: A fixing belt, used to connect to the human body trunk and provided with a plurality of detachable connecting structures in the length direction; A storage structure is arranged inside the fixing belt or connected to the outside of the fixing belt through a detachable connection structure, and one end of the storage structure is provided with a detachable waterproof sealing structure for closing the storage structure; A power unit is connected to the fixing belt and the leg of the person respectively through the detachable connection structure; A control module connected to the power unit to control the output power of the power unit; The power module is arranged in the storage structure and an output end thereof is connected with a power-off switch. The power-off switch is arranged at the end of the waterproof sealing structure and is electrically connected to the control module.

2. The underwater propulsion system according to claim 1, characterized in that: The storage structure is a cavity inside the fixing belt, and the power module is composed of a plurality of batteries, which are arranged in sequence in the cavity. After the plurality of batteries are connected in series through a circuit, the circuit then penetrates a waterproof sealing structure to achieve connection with a power-off switch. An inner lining made of a waterproof material is provided in the cavity, and the two end faces with the largest area in the battery are parallel to the surface of the fixing belt.

3. The underwater propulsion system according to claim 2, characterized in that: The waterproof sealing structure is a waterproof zipper, the chain edge of the waterproof zipper is sewn to the lining, and the circuit of several batteries connected in series passes through the surface of the lining and the fixing belt in sequence from the side away from the waterproof zipper. The power-off switch is fixedly connected to the surface of the fixing belt away from the human body, and the power-off switch is a plug-in small circuit breaker.

4. The underwater propulsion system according to claim 3, characterized in that: A fixing block is provided on the surface of the fixing belt away from the human body, the power-off switch is fixedly connected to the surface of the fixing block, a first annular convex edge is provided on the surface of the power-off switch located outside the control end thereof, the first convex edge is provided with a first external thread, a first connector is provided on the surface of the fixing block located outside the power-off switch, the first connector is connected to a first connecting belt, an end of the first connecting belt away from the first connector is fixedly connected to a first sealing cover, a circle of first internal threads is provided on the inner wall of the first sealing cover, the first sealing cover is connected to the outside of the first convex edge by matching the first internal threads with the first external threads, a first sealing ring is provided in the interior of the first sealing cover between the outside of the first internal threads and the end face of the first sealing cover, and the first sealing ring is squeezed against the end face of the first convex edge by the end face of the first sealing cover when the first sealing cover matches the outside of the first convex edge.

5. The underwater propulsion system according to claim 1, characterized in that: The storage structure is a cylinder, the outer wall of which is surrounded by a number of detachable connection structures and fixed to a fixing belt. The power module is composed of a number of batteries, and the power modules are arranged in sequence in the cylinder. The two end faces with the largest areas in the power module are parallel to the axial end faces of the cylinder. The waterproof sealing structure is detachably matched to the port of the cylinder. After the batteries are connected in series through a circuit, they are connected to the power-off switch through the circuit penetrating the waterproof sealing structure.

6. The underwater propulsion system according to claim 4, characterized in that: The waterproof sealing structure is an end cover, the port of the cylinder is connected to one end of the end cover by means of internal and external threads, a circle of sealing strip is provided at the port of the cylinder, the power-off switch is fixedly connected to the end face of the end cover away from the cylinder and connected to the line passing through the end cover, and the power-off switch is a plug-in small circuit breaker.

7. The underwater propulsion system according to claim 6, characterized in that: The power-off switch is fixedly connected to the end face of the end cover away from the cylinder body, the surface of the power-off switch located outside the control end thereof is provided with a ring-shaped second convex edge, the second convex edge is provided with a second external thread, the surface of the end cover located outside the power-off switch is provided with a second connector, the second connector is connected to a second connecting belt, the end of the second connecting belt away from the second connector is fixedly connected to a second sealing cover, the inner wall of the second sealing cover is provided with a circle of second internal threads, the second sealing cover is connected to the outside of the second convex edge by the cooperation of the second internal threads and the second external threads, the second sealing cover is provided with a second sealing ring in the interior between the outside of the second internal threads and the end face of the second sealing cover, and the second sealing ring is squeezed against the end face of the second convex edge by the end face of the second sealing cover when the second sealing cover is cooperated with the outside of the second convex edge.

8. The underwater propulsion system according to claim 1, characterized in that: The detachable connection structure is a third connection belt that is fixed by snap-fitting.

9. The underwater propulsion system according to claim 1, characterized in that: The control module includes a rod body, a circuit board with an integrated chip and a control key, the circuit board is arranged in the rod body, the control key is arranged on the surface of the rod body and is electrically connected to the circuit board, one end of the rod body is provided with a sub-docking terminal embedded in the circuit board, the docking column outer shell of the sub-docking terminal is provided with a sealing sleeve with an opening, the power-off switch is connected to at least two female docking terminals, a circle of sealing gaskets with openings are provided at the docking point between the female docking terminal and the sub-docking terminal, and the docking column of the female docking terminal is wrapped when the sub-docking terminal is not docked to the female docking terminal, the other end of the rod body is connected to a connecting wire through a joint, one end of the connecting wire passes through the rod body and is electrically connected to the circuit board, the other end of the connecting wire is electrically connected to the power unit, and at least two third connectors are provided on the surface of the rod body, and a fourth connecting belt is connected between the two third connectors.

10. The underwater propulsion system according to claim 1, characterized in that: The power unit comprises a power source formed by a motor driving a propeller to rotate and a shell, and the end and side wall of the shell are both connected with a detachable connection structure.

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