CN108657401B

CN108657401B - Full-circle rotating guide cover type propulsion device for water vehicles

Info

Publication number: CN108657401B
Application number: CN201710192106.XA
Authority: CN
Inventors: 沙鸣雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-03-28
Filing date: 2017-03-28
Publication date: 2020-10-27
Anticipated expiration: 2037-03-28
Also published as: CN108657401A

Abstract

The invention discloses a full-circle rotating guide hood type water carrier propelling device, which utilizes a prime motor and a pump to generate driving water flow in a ship body, and the driving water flow is divided into inner driving water flow and outer driving water flow through a water inlet guide pipe and a connecting pipe which are compounded with an inner pipe and an outer pipe, and is guided to a main guide pipe arranged outside the ship body, and the connecting pipe controls the steering of the main guide pipe through a power source; the main flow guide pipe is internally provided with a primary flow guide inner nozzle, a middle flow guide nozzle and a secondary flow guide outer ring nozzle which are combined from inside to outside, the primary flow guide inner nozzle is connected with the inner pipe and can guide the inner driving water flow, the secondary flow guide outer nozzle is connected with the outer pipe and can guide the outer driving water flow, the inner driving water flow and the outer driving water flow are utilized to respectively form high-speed water flows at the center and the peripheral side of the main flow guide pipe, and a main water flow can be pulled to pass through the middle flow guide nozzle so as to improve the total water flow passing through the main flow guide pipe and further generate thrust for driving the ship to move in an accelerating way.

Description

Full-circle rotating guide cover type propulsion device for water vehicles

Technical Field

The invention relates to a full-circle rotation guide cover type propulsion device for an aquatic carrier, in particular to an environment-friendly propulsion device which can avoid touching foreign matters in water and has the advantages of improving the propulsion efficiency and low noise.

Background

Most of the conventional water vehicles (ships) use propellers as main driving components, and it is common to arrange the propellers below the horizontal plane behind the hull (hull) and arrange a sheet-shaped rudder on the water flow path driven by the propellers so as to drive the water vehicles (ships) to move and control the direction; however, in practical applications, the propeller is disposed outside the hull (hull) and directly contacts with the external water, and the internal combustion engine (engine) driving the propeller must be disposed in or above the water surface of the hull (hull), so that as the hull (hull) is larger, the path extended by the transmission shaft connected with the propeller by the internal combustion engine (engine) is inevitably longer, so that the center of the transmission shaft is prone to generate unexpected deflection, vibration and various resonance situations are generated during operation, and besides power loss is caused to affect the efficiency of power transmission, the stability during navigation is also severely affected; furthermore, the above propeller directly extending into the water when rotating beats the water flow and generates a lot of noise, which not only damages the quiet environment, but also is difficult to be applied to special (military) soundless diving occasions, and the propeller is easy to touch foreign matters (such as fishing net and cable) in the water during the navigation to cause fault conditions and make the aquatic organisms easily hurt or damaged by the aquatic organisms, forming various defects in application.

In taiwan patent publication No. 550210, a water jet propulsion outboard engine is disclosed, which mainly comprises: a drive source (engine); a drive system (drive shaft, drive gear, driven gear, impeller shaft) for transmitting the driving force of the drive source: a curved-tube-shaped passage wall (propulsion device) fixed to a housing on which the drive source is mounted and having a suction port and a discharge port; a guide vane installed in the vicinity of the discharge port of the passage wall; and a movable impeller which is enclosed in the passage wall and rotated by the drive system, and which forms a spiral vane (blade) wound around a hub thereof, the outer peripheral edge of the spiral vane being close to the inner peripheral surface of the passage wall, and the outer peripheral edge of the spiral vane extending toward the suction port side; the driving source drives the impeller to introduce external water from the suction port through the driving system, and then the external water flows out from the discharge port through the impeller, thereby generating a propelling force on the passage wall and the hull (hull).

However, since the propeller is still directly acting on the water flow outside the hull to generate the driving force, the device still belongs to the application change of the traditional propeller, and although the design that the movable impeller (propeller) and the guide blades are arranged inside the suction shell, the pump shell and the discharge shell can reduce the possibility of damage caused by touching foreign matters or aquatic organisms at the bottom of the water, the device is still difficult to completely avoid; and the application of noise to destroy the environment cannot be overcome.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a full-circle rotating guide-cover type propulsion device for water vehicles, which mainly generates a driving water flow inside a ship body, and the driving water flow is divided into an inner driving water flow and an outer driving water flow by an inner pipe and an outer pipe which are compounded by a connecting pipe and guided to a main flow pipe which is combined and fixed outside the ship body, and the inner driving water flow and the outer driving water flow are respectively used for generating primary and secondary high-speed drainage in the main flow pipe, so as to further improve the flow rate of the main water flow passing through the inner part of the main flow pipe, and enable the main flow pipe to generate thrust to drive the ship body to move.

Another object of the present invention is to provide a propulsion device of a whole-circle rotating cowl type water vehicle, wherein a prime mover and a pump are disposed inside a hull to form a driving water flow by water introduced to the outside of the hull, so that noise diffused to the outside of the hull and in the water is reduced, influence and pollution of noise on the water environment can be effectively reduced, and sound insulation processing can be conveniently performed on noise sources such as the prime mover and the pump as required, so as to obtain a better silencing effect, and the propulsion device can be used in special occasions.

The present invention also provides a propulsion device of a full-circle rotating guide-cover type waterborne carrier, which does not need to use a power mechanism inside the hull to drive a propeller structure outside the hull, so that the propulsion device does not have an overlong transmission shaft structure, does not have vibration and various resonance situations caused by the deflection of the transmission shaft, and simultaneously has an elastic space for the arrangement of machines and tools on the ship. Therefore, the power transmission is more efficient, and the stability during navigation can be ensured.

To solve the above problems, the technical means of the present invention includes: the connecting pipe is formed by compounding an inner pipe and an outer pipe at the same center, one end of the connecting pipe is arranged in the hull of the ship body and is connected with default driving water flow, so that the driving water flow respectively flows into the inner pipe and the outer pipe to form inner driving water flow and outer driving water flow, and the other end of the connecting pipe extends towards the outside of the hull; the support and steering assembly is arranged in the hull and connected with the connecting pipe, and the support and steering assembly at least comprises a power source and a steering gear set which is connected with the power source and the connecting pipe, so that the connecting pipe can be driven by the power source to pivot.

The top of the main flow guide pipe is provided with an outer water guide port which is connected with one end part of the connecting pipe extending out of the hull in a sleeved mode, an accommodating space which is communicated with the outer water guide port in a front-back transverse through mode is arranged in the main flow guide pipe, a middle flow guide nozzle is fixedly arranged in the accommodating space, two ends of the middle flow guide nozzle are respectively provided with a middle flow guide water inlet and a middle flow guide water outlet which are communicated with each other, the middle flow guide water inlet is completely connected with one end opening of the accommodating space to form main water flow by water guided into the main flow guide pipe, and a middle flow guide nozzle flow passage which is gradually reduced towards the middle section inner diameter is arranged between the middle flow guide water inlet and the middle flow guide water outlet to accelerate the flow speed of the main water flow.

The middle diversion nozzle is provided with an outer ring groove at the periphery of the middle section, a through hole is arranged at the top side of the outer ring groove, the through hole is used for the inner pipe to pass through and extend to the middle section of the flow passage of the middle diversion nozzle, a primary diversion inner nozzle is arranged in the flow passage of the middle diversion nozzle, an inner water inlet is arranged at the top side of the primary diversion inner nozzle and is sleeved and connected with the inner pipe so as to lead in the inner driving water flow, an inner water outlet is arranged at one side of the primary diversion inner nozzle facing the middle diversion water outlet, a nozzle flow passage with gradually reduced inner diameter towards the middle section is arranged between the inner water inlet and the inner water outlet so as to accelerate the flow velocity of the inner driving water flow and then lead out from the inner water outlet, a secondary diversion outer ring nozzle is sleeved at one end of the periphery facing the middle diversion water outlet, and a plurality of outer water inlets communicated with each other are respectively arranged at two sides of, And each outer water inlet is communicated with the outer ring groove of the middle diversion nozzle for leading in the outer driving water flow.

An outer nozzle runner with the inner diameter gradually reduced towards the middle section is arranged between each outer water inlet and each outer water outlet, so that the outer nozzle runner accelerates the flow velocity of the outer driving water flow and then is guided out by the outer water outlets, the inner driving water flow accelerated is guided out by the inner water outlet, and the outer driving water flow accelerated is guided out by the outer water outlets to accelerate the water velocity of the middle diversion nozzle close to one side of the middle diversion water outlet, so that the pressure at one end of the middle diversion water outlet is smaller than that at one end of the middle diversion water inlet, the main water flow velocity passing through the middle diversion water outlet can be further increased, and power for pushing the ship body is generated.

According to the structure, the connecting pipe penetrates through a hull structural member, and the hull structural member can be closely embedded and fixed on the hull structure at the tail end of the ship body.

According to the structure, the middle section of the connecting pipe is transversely provided with an outer combining part which can be close to the outer surface side of the hull structural part.

According to the structure, one side of the hull structural member far away from the outer combining part is provided with a gap plate, the gap plate is tightly covered on the surface of the hull structural member, a gap plate is arranged between the outer combining part of the connecting pipe and the hull structural member, and the gap plate can be tightly attached to one side of the hull structural member close to the outside of the ship body.

According to the structure, the outer surface side of the main flow guide pipe is provided with a flow guide bracket, and the flow guide bracket is provided with a combining part which can be attached and fixed on the outer combining part.

According to the structure, the main diversion pipe is additionally combined with a stopping lantern ring at one end side close to the middle diversion water outlet, and the stopping lantern ring can stop the outer ring nozzle from loosening outwards.

According to the above structure, the steering gear set at least comprises a driving gear driven by the power source to rotate and a transmission gear meshed with the driving gear, and the transmission gear is sleeved on the periphery of the connecting pipe and forms a combined fixation of synchronous pivoting.

According to the structure, the connecting pipe is communicated with a pump arranged in the ship body through a water inlet pipe, the pump is driven by a preset power source (motor), and water outside the ship body can be pumped and pressurized to form the driving water flow and is conveyed to the connecting pipe.

According to the above structure, the bottom of the hull is provided with a subsea valve box having an opening, the subsea valve box being in communication with the pump.

According to the structure, the water inlet conduit is formed by compounding an inner conduit and an outer conduit which are in the same center, one end of the inner conduit is communicated with the inner pipe, and one end of the outer conduit is communicated with the outer pipe.

According to the above structure, the pump is connected to the water inlet conduit via a water conduit.

According to the above structure, the middle section of the water inlet conduit has a bending angle, so that one end of the water inlet conduit is correspondingly combined with one end of the connecting pipe.

Drawings

Fig. 1 is a perspective exploded view of the present invention.

Fig. 2A is a perspective exploded view of the main draft tube according to the first embodiment of the present invention.

Fig. 2B is a perspective exploded view of the main draft tube according to the second embodiment of the present invention.

Fig. 3 is a side assembled cross-sectional view of the present invention.

Fig. 4 is a combined external view of the present invention.

Fig. 5 is a schematic structural diagram of the present invention combined with related components in practical application.

Figure 6 is a schematic view of the various water flow paths of the present invention.

Description of the reference numerals

Water inlet conduit

Inner catheter

An outer catheter

13

130

Connecting pipe

Inner tube

Outer tube

External joint

A gap plate

Support and turn to assembly

Steering gear set

A support and steering shroud

32

A transmission gear

331.. pin

332

A power source

Main flow pipe

Flow guide bracket

A joint portion

412.. external water guide port

42

421

Inner water outlet

43

431.. intermediate flow-guiding water inlet

432

433

434

44

441.. external water inlet

Outlet nozzle

443.. outer nozzle flow passage

45.. outer ring nozzle stop collar

46

Ship hull structural member

A through hole

Connecting tube supporting waterproof bearing ring

Ship hull

60

A subsea valve box

.

71.. prime mover

A aqueduct

A

A1

A11

A2

A21

Main water flow

B1

Detailed Description

Referring to fig. 1 to 5, it can be seen that the main structure of the present invention includes: a connecting pipe 2, a support and steering assembly 3 and a main flow guide pipe 4; wherein the connecting tube 2 is composed of an inner tube 21 and an outer tube 22 with the same center.

In practical applications, the connecting tube 2 can pass through a default through hole 51 of a hull structural member 5, and the hull structural member 5 is tightly embedded and fixed on a hull 60 of a predetermined ship 6, such that one end of the connecting tube 2 is disposed inside the hull 60, the other end of the connecting tube 2 extends outside the hull 60, an outer connecting portion 23 is transversely disposed at a middle section of the connecting tube 2, and the outer connecting portion 23 is close to an outer side of the hull structural member 5.

In addition, a connecting pipe supporting waterproof bearing ring 52 and a gap plate 24 are respectively disposed at two end sides of the through hole 51, the connecting pipe supporting waterproof bearing ring 52 is tightly covered on one side of the hull structural member 5 close to the inside of the ship body 6, and the gap plate 24 is disposed between the outer joint portion 23 and the hull structural member 5, so that the two are tightly attached to the surface of the hull structural member 5, thereby forming a waterproof sealing effect between the connecting pipe 2 and the hull structural member 5.

In one possible embodiment, a pump 7 driven by a predetermined prime mover 71 (e.g., a motor, an engine, etc.) may be disposed inside the hull 6, and a subsea valve box 601 having an opening may be disposed at the bottom of the hull 60, the subsea valve box 601 being in communication with the pump 7, such that the prime mover 71 may be controlled to drive the pump 7 to pump water outside the hull 6 and pressurize the water to form a driving water stream, which is directed out through a water conduit 72.

The connecting pipe 2 is connected with the water guiding pipe 72 through a water inlet pipe 1 to introduce the driving water flow, in practical application, the water inlet pipe 1 can have a bending angle according to the extending position of the water guiding pipe 72, the water inlet pipe 1 is formed by compounding an inner pipe 11 and an outer pipe 12 in the same center, one end of the inner pipe 11 is communicated with the inner pipe 21, one end of the outer pipe 12 is communicated with the outer pipe 22, so that the driving water flow can form an inner driving water flow and an outer driving water flow after respectively flowing into the inner pipe 11, the inner pipe 21, the outer pipe 12 and the outer pipe 22, and the connecting part of the inner pipe 11 and the inner pipe 21 and the connecting part of the outer pipe 12 and the outer pipe 22 are respectively provided with a proper waterproof shaft sleeve 130 and a water inlet pipe fixing ring 13 to assist the connection.

A supporting and steering assembly 3 is disposed on the side of the hull structural member 5 close to the inside of the hull 6 (far from the gap plate 24) and connected to the connecting pipe 2, the supporting and steering assembly 3 at least has a power source 34, a steering gear set 3a connecting the power source 34 and the connecting pipe 2, and a supporting and steering housing 31 is disposed on the outer periphery of the steering gear set 3a.

In one possible embodiment, the steering gear set 3a at least comprises a driving gear 32 driven by the power source 34 to rotate, and a transmission gear 33 engaged with the driving gear 32, and the transmission gear 33 is sleeved on the periphery of the connecting tube 2 and fixed by a pin 331 penetrating therethrough, and a connecting tube fixing ring 332 engaged therewith to form a synchronous pivoting combination, so that the power source 34 can drive the connecting tube 2 to pivot via the steering gear set 3a.

The front and rear ends of the top of the main draft tube 4 are provided with a draft bracket 41, the draft bracket 41 is provided with a combining part 411 which can be attached and fixed on the outer combining part 23, and the combining part 411 is provided with an outer water guiding opening 412 which can be connected and sleeved on one end part of the connecting tube 2 extending out of the hull 60; the main flow guiding pipe 4 is internally provided with an accommodating space 46 which is transversely communicated with the outer water guiding opening 412 in a front-rear direction, a middle flow guiding nozzle 43 is fixedly arranged in the accommodating space 46, two ends of the middle flow guiding nozzle 43 are provided with a middle flow guiding water inlet 431 and a middle flow guiding water outlet 432 which are communicated, the middle flow guiding water inlet 431 is completely connected with an opening at one end of the accommodating space 46 so as to be used for guiding water outside to form a main water flow, and a middle flow guiding nozzle flow passage inner diameter which is gradually reduced from two ends of the middle flow guiding nozzle 43 to the middle section is arranged between the middle flow guiding water inlet 431 and the middle flow guiding water outlet 432 so as to generate the effect of accelerating the flow speed when the main water flow is guided through the middle flow guiding nozzle; the middle flow guiding nozzle 43 has an outer annular groove 434 at the outer periphery of the middle section, and a through hole 433 is disposed at the top side of the outer annular groove 434, and the through hole 433 is used for the inner tube 21 to pass through and extend to the middle section of the flow channel of the middle flow guiding nozzle.

In addition, a primary drainage inner nozzle 42 is disposed in the middle diversion nozzle flow passage, an inner water inlet 421 is disposed on the top side of the primary drainage inner nozzle 42 and can be sleeved and connected with the inner pipe 21 for guiding the inner driving water flow, an inner water outlet 422 is disposed on one side of the primary drainage inner nozzle 42 facing the middle diversion water outlet 432, and an inner nozzle flow passage with a gradually reduced inner diameter toward the middle section is disposed between the inner water inlet 421 and the inner water outlet 422 for accelerating the flow velocity of the inner driving water flow and then guiding the inner driving water flow out of the primary inner water outlet 422.

The middle diversion nozzle 43 is sleeved with a secondary diversion outer ring nozzle 44 at the outer periphery of one end facing the middle diversion water outlet 432, two sides of the secondary diversion outer ring nozzle 44 are respectively provided with a plurality of outer water inlets 441 and outer water outlets 442 which are communicated, each outer water inlet 441 is communicated with the outer ring groove 434 of the middle diversion nozzle 43 for guiding the outer driving water flow flowing in the outer pipe 22, an outer nozzle flow passage 443 with a gradually reduced inner diameter towards the middle section is arranged between each outer water inlet 441 and the outer water outlet 442 for accelerating the flow velocity of the outer driving water flow and then guiding out from the outer water outlet 442, and the cross section of the outer nozzle flow passage 443 can be designed into different geometric shapes according to requirements (such as the first and second implementation forms disclosed in fig. 2A and 2B, respectively).

An outer ring nozzle stop collar 45 is further coupled to the end of the main diversion pipe 4 near the middle diversion water outlet 432, and the stop collar 45 can stop the secondary diversion outer ring nozzle 44 from being loosened outward.

Referring to fig. 6, it can be seen that, in the operation of the present invention, after the driving water flow a is introduced from the water inlet conduit 1, the driving water flow a can respectively flow into the inner conduit 11 and the inner tube 21 to form an inner driving water flow a2, and flow into the outer conduit 12 and the outer tube 22 to form an outer driving water flow a 1; wherein the inner driving water flow a2 is accelerated by the inner nozzle flow passage and then led out of the accelerated inner driving water flow a21 through the inner water outlet 442; the outer driving water flow a1 accelerates its flow rate through the outer nozzle flow passage and then is guided out of the accelerated outer driving water flow a11 by the outer water outlet 442, and the accelerated inner driving water flow a21 and the accelerated outer driving water flow a11 can push the middle diversion nozzle 43 to approach the water flow rate of one side of the middle diversion water outlet 432.

Application according to bernoulli's law is known: in a continuous fixed flow field, when the flow velocity of the fluid is increased, the pressure of the fluid is reduced; accordingly, the outward flow rate of the fluid at one end of the middle diversion water outlet 432 is faster than that of the middle diversion water inlet 431, and the pressure of the middle diversion water inlet 431 is greater than that of the middle diversion water outlet 432, so that the main water flow B inevitably generates a pressure which flows from the middle diversion water inlet 431 to the middle diversion water outlet 432 rapidly, and the flow rate of the main water flow B is increased when the main water flow B passes through the middle diversion nozzle channel, the accelerated main water flow B1 can be guided out from the middle diversion water outlet 432, and finally, the accelerated main water flow B1, the accelerated inner driving water flow a21 and the accelerated outer driving water flow a11 jointly generate power which drives the flow pipe 4 to drive the ship body 6.

The power source 34 can be controlled to drive the connecting pipe 2 (via the outer joint portion 23 and the joint portion 411) via the gear set 3a to drive the main flow guiding pipe 4 to pivot, so as to change the power direction for driving the ship body 6, thereby achieving the function of steering the ship body 6 to sail.

The above structure of the present invention has the following features:

the traditional propeller structure exposed outside the ship body is improved, and the situation that the propeller is twisted with foreign matters (fishing nets and cables) or impacts aquatic organisms to cause damage and failure can be effectively avoided.

Noise sources such as a prime motor, a pump and the like are arranged in the hull, and sound insulation processing can be carried out according to needs, so that the noise diffused outside the hull and in water is small, the influence and pollution of the noise on the environment can be effectively reduced, the noise silencing device has an excellent silencing effect, and special (military) demand occasions can be further met.

The propeller structure positioned outside the ship body is not required to be driven by a power mechanism inside the ship body, so that the structure of the transmission shaft is not overlong, vibration and various resonance situations caused by the deflection of the transmission shaft are avoided, the power transmission is more efficient, and the stability in navigation is ensured.

After the nozzle is used to accelerate the inner and outer driving water flows, the flow velocity of the main water flow is increased at one end of the main water flow pipe by the accelerated inner and outer driving water flows, so that the main water flow can more efficiently pass through the main water flow pipe, and better driving efficiency is formed.

In summary, the present invention provides a propulsion device for a whole-circle rotating guide-cover type waterborne carrier, which can achieve the effects of improving the propulsion efficiency, avoiding touching foreign objects in water and reducing the operation noise.

Claims

1. The utility model provides a complete rotatory guide cover formula aquatic carrier advancing device which characterized in that: at least comprises the following steps:

a main flow guiding pipe, which is provided with an outer water guiding port at the top and is sleeved on one end part of a connecting pipe extending out of the hull, a containing space which is communicated with the outer water guiding port and is penetrated through from front to back is arranged in the main flow guiding pipe, a middle flow guiding nozzle is fixedly arranged in the containing space, two ends of the middle flow guiding nozzle are respectively provided with a middle flow guiding water inlet and a middle flow guiding water outlet which are communicated, a middle flow guiding nozzle flow passage which is gradually reduced towards the inner diameter of the middle section is arranged between the middle flow guiding water inlet and the middle flow guiding water outlet, the middle flow guiding nozzle is provided with an outer ring groove at the outer periphery of the middle section, the top side of the outer ring groove is provided with a through hole, the through hole is used for an inner pipe to pass through and extend to the middle section of the middle flow guiding nozzle flow passage, a primary flow guiding inner nozzle is arranged in the middle flow, the inner water inlet is sleeved and connected with the inner pipe, an inner water outlet is arranged on one side of the primary drainage inner nozzle facing the middle diversion water outlet, an inner nozzle flow channel gradually reducing towards the middle section inner diameter is arranged between the inner water inlet and the inner water outlet, a secondary drainage outer ring nozzle is sleeved on the periphery of one end of the middle diversion water outlet, a plurality of outer water inlets and outer water outlets which are communicated are arranged between two sides of the secondary drainage outer ring nozzle, each outer water inlet is communicated with an outer ring groove of the middle diversion nozzle, and an outer nozzle flow channel gradually reducing towards the middle section inner diameter is arranged between each outer water inlet and each outer water outlet.

2. The all-around rotating cowl type marine vehicle propulsion device of claim 1, wherein: the support and steering assembly is arranged in the hull and connected with the connecting pipe, and the support and steering assembly at least comprises a power source and a steering gear set which is connected with the power source and the connecting pipe, so that the connecting pipe can be driven by the power source to pivot.

3. The all-around rotating cowl type marine vehicle propulsion device of claim 2, wherein: the ship is provided with a connecting pipe, the connecting pipe is formed by compounding an inner pipe and an outer pipe which are in the same center, one end of the connecting pipe is arranged inside a hull of the ship body and is connected with default driving water flow, and the other end of the connecting pipe extends towards the outside of the hull.

4. The all-around rotating cowl type marine vehicle propulsion device of claim 3, wherein: the connecting pipe penetrates through a hull structural member, and the hull structural member can be closely embedded and fixed on a local hull structure at the tail end of the hull.

5. The all-around rotating cowl type marine vehicle propulsion device of claim 4, wherein: the connecting pipe middle section is violently equipped with an outer joint portion, and this outer joint portion can be close to this hull structure outside the surface side.

6. The all-around rotating cowl type marine vehicle propulsion device of claim 5, wherein: the hull structure is provided with a connecting pipe supporting waterproof bearing ring on one side far away from the outer joint part, the connecting pipe supporting waterproof bearing ring is tightly covered on the surface of the hull structure, a gap plate is arranged between the outer joint part of the connecting pipe and the hull structure, and the gap plate can be tightly attached to one side, close to the outside of the ship body, of the hull structure.

7. The all-around rotating cowl type marine vehicle propulsion device of claim 5, wherein: the outer surface side of the main guide pipe is provided with a guide support, and the guide support is provided with a combining part which can be attached and fixed on the outer combining part.

8. The all-around rotating cowl type marine vehicle propulsion device of claim 4, wherein: the hull structure is combined with a supporting and steering assembly at one side close to the interior of the hull, and the supporting and steering assembly is coated on the outer periphery side of the steering gear set.

9. The all-around rotating cowl type marine vehicle propulsion device of claim 1 or 2, wherein: the main diversion pipe is additionally combined with a stopping lantern ring at one end side close to the middle diversion water outlet, and the stopping lantern ring can fixedly stop the secondary diversion outer ring nozzle from loosening outwards.

10. The all-around rotating cowl type marine vehicle propulsion device of claim 3, wherein: the main diversion pipe is additionally combined with a stopping lantern ring at one end side close to the middle diversion water outlet, and the stopping lantern ring can fixedly stop the secondary diversion outer ring nozzle from loosening outwards.

11. The all-around rotating cowl type marine vehicle propulsion device of claim 3, wherein: the steering gear set at least consists of a driving gear which is driven by the power source to rotate and a transmission gear which is meshed with the driving gear, and the transmission gear is sleeved on the peripheral side of the connecting pipe and forms synchronous pivoting combination and fixation.

12. The all-around rotating cowl type marine vehicle propulsion device of claim 3, wherein: the connecting pipe is communicated with a pump arranged in the ship body through a water inlet conduit, the pump is driven by a default prime motor, and the pump can draw water outside the ship body to be pressurized to form the driving water flow and convey the driving water flow to the connecting pipe.

13. The all-around rotating cowl type marine vehicle propulsion device of claim 12, wherein: the water inlet conduit is formed by compounding an inner conduit and an outer conduit which are in the same center, one end of the inner conduit is communicated with the inner pipe, and one end of the outer conduit is communicated with the outer pipe.

14. The all-around rotating cowl type marine vehicle propulsion device of claim 12, wherein: the pump is communicated with the water inlet conduit through a water conduit.

15. The all-around rotating cowl type marine vehicle propulsion device of claim 13, wherein: the middle section of the water inlet conduit is provided with a bending angle; and the connecting part of the inner conduit and the inner tube and the connecting part of the outer conduit and the outer tube are respectively provided with a proper waterproof shaft sleeve and a water inlet conduit fixing ring; to assist in the engagement.