阅读说明：本技术 大推力低噪声泵喷推进装置 (High-thrust low-noise pump jet propulsion device ) 是由 孙博华 于 2020-06-17 设计创作，主要内容包括：本发明涉及泵喷推进装置技术领域,具体涉及一种大推力低噪声泵喷推进装置。其包括外通道壳体以及位于外通道壳体内部的内通道壳体；其中,在外通道壳体的入口端设置第一级泵喷推进器,外通道壳体的出口端设置用于控制水流方向及水流量的整流组件；内通道壳体内部设置第二级泵喷推进器,且内通道壳体内部形成有第一通道；外通道壳体与内通道壳体之间形成有第二通道。与现有技术相比,该装置将大大抑制高速水流的喷射噪声,且整流组件的张开与收缩角度是可调节的,从而能控制水流喷射的方向以及控制高速喷射水流的流量,提高水流的喷射速度,形成反推力,推动与该推进装置相连接的物体前进或前进改变方向。(The invention relates to the technical field of pump jet propulsion devices, in particular to a high-thrust low-noise pump jet propulsion device. The device comprises an outer channel shell and an inner channel shell positioned in the outer channel shell; the first-stage pump-jet propeller is arranged at the inlet end of the outer channel shell, and the outlet end of the outer channel shell is provided with a rectifying component for controlling the water flow direction and the water flow; a second-stage pump jet propeller is arranged in the inner channel shell, and a first channel is formed in the inner channel shell; a second passage is formed between the outer passage housing and the inner passage housing. Compared with the prior art, the device can greatly inhibit the jet noise of high-speed water flow, and the opening and contraction angles of the rectifying component are adjustable, so that the jet direction of the water flow and the flow rate of the high-speed water flow can be controlled, the jet speed of the water flow is improved, reverse thrust is formed, and an object connected with the propulsion device is pushed to advance or advance to change the direction.)

1. The utility model provides a high thrust low noise pump spouts advancing device which characterized in that: the device comprises an outer channel shell and an inner channel shell positioned inside the outer channel shell;

the inlet end of the outer channel shell is provided with a first-stage pump jet propeller, and the outlet end of the outer channel shell is provided with a rectifying component for controlling the water flow direction and the water flow;

a second-stage pump jet propeller is arranged in the inner channel shell, and a first channel is formed in the inner channel shell;

a second passage is formed between the outer passage housing and the inner passage housing.

2. The high thrust low noise pump jet propulsion device of claim 1, wherein: the outer passage shell is conical and comprises a large opening end and a small opening end, and the large opening end is the inlet end.

3. The high thrust low noise pump jet propulsion device of claim 1, wherein: the inner passage shell is conical, and the inner passage shell and the outer passage shell are arranged in the same direction.

4. The high thrust low noise pump jet propulsion device of claim 1, wherein: the first-stage pump spraying propeller and the second-stage pump spraying propeller are propellers, and the number of the propellers at each stage is even.

5. The high thrust low noise pump jet propulsion device of claim 1, wherein: the rectifying assembly comprises a support frame and a plurality of rectifying plates arranged along the circumferential direction of the outer side wall of the outer channel shell;

the outlet end of the outer channel shell is fixedly connected with the support frame, a plurality of driving devices are arranged on the support frame, and each driving device is provided with an output end which is hinged to the corresponding rectifying plate.

6. The high thrust low noise pump jet propulsion device of claim 5, wherein: each fairing respectively with the exit end hinged joint of outer passageway casing.

7. The high thrust low noise pump jet propulsion device of claim 5, wherein: the driving device is a middle trunnion type cylinder.

8. The high thrust low noise pump jet propulsion device of claim 1, wherein: the rectifying assembly comprises a supporting base, a plurality of sliding blocks and a plurality of rectifying plates arranged along the circumferential direction of the outer side wall of the outer channel shell;

the outlet end of the outer channel shell is fixedly connected with the support base, a plurality of power devices are mounted on the support base, and the telescopic end of each power device is hinged with the corresponding sliding block;

every all seted up the spout structure on the cowling panel, every the slider respectively with correspond spout structure sliding connection.

9. The high thrust low noise pump jet propulsion device of claim 8, wherein: each fairing respectively with the exit end hinged joint of outer passageway casing.

10. A high thrust low noise pump jet propulsion device according to any of claims 5 to 9, characterized in that: the number of the rectifying plates is set to be 8 or 16.

Technical Field

The invention relates to the technical field of pump jet propulsion devices, in particular to a high-thrust low-noise pump jet propulsion device.

Background

The underwater propeller thruster rotates under an open environment to form thrust without a pressurization link, and in order to meet the requirement of the thrust, an inventor generally increases the diameter of a propeller, and when the diameter is larger, the propeller thruster generally has lower rotating speed, lower efficiency and small acceleration, so that the propeller thruster is difficult to meet the high-speed movement of objects on water and under water. The jet propeller design is adopted, the high-speed small-diameter propeller can be used for sucking water, the diameter size of the propeller is reduced, and the diameter of a water inlet of the general jet propeller is larger than that of a water outlet, so that the water flow speed of the water outlet can be greatly increased, and the efficiency is improved; but because the water outlet water flow speed is higher, huge noise can be formed, and the concealment is poorer.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the high-thrust low-noise pump spraying propulsion device, which realizes that high-speed water flow is wrapped by low-speed water flow and greatly inhibits the spraying noise of the water flow.

The invention adopts the following technical scheme:

a high-thrust low-noise pump jet propulsion device comprises an outer channel shell and an inner channel shell positioned inside the outer channel shell.

The first-stage pump-jet propeller is arranged at the inlet end of the outer channel shell, and the outlet end of the outer channel shell is provided with a rectifying component for controlling the water flow direction and the water flow; a second-stage pump jet propeller is arranged in the inner channel shell, and a first channel is formed in the inner channel shell; a second passage is formed between the outer passage housing and the inner passage housing.

Further, the outer channel shell is conical and comprises a large opening end and a small opening end, and the large opening end is an inlet end.

Furthermore, the inner passage shell is conical, and the inner passage shell and the outer passage shell are arranged in the same direction.

Furthermore, the first-stage pump spraying propeller and the second-stage pump spraying propeller both adopt propellers, and the number of the propellers at each stage is even.

Further, the rectification subassembly includes the support frame to and a plurality of cowling panels that set up along outer passageway casing lateral wall circumference.

The outlet end of the outer channel shell is fixedly connected with the support frame, the support frame is provided with a plurality of driving devices, and the output end of each driving device is hinged with the corresponding rectifying plate.

Furthermore, each rectifying plate is hinged with the outlet end of the outer channel shell.

Further, the driving device is a middle trunnion type cylinder.

Further, the rectification subassembly includes supporting base, a plurality of slider and a plurality of cowling panels that set up along outer passageway casing lateral wall circumference.

The outlet end of the outer channel shell is fixedly connected with the supporting base, a plurality of power devices are mounted on the supporting base, and the telescopic end of each power device is hinged with the corresponding sliding block. All seted up the spout structure on every cowling panel, every slider respectively with the spout structure sliding connection that corresponds.

Furthermore, each rectifying plate is hinged with the outlet end of the outer channel shell.

Further, the number of the rectifying plates is set to 8 or 16.

Compared with the prior art, the invention has the following effects:

1) when in work, the first-stage pump jet propeller can suck water flow into the outer channel shell, and part of the water flow sucked into the outer channel shell is sucked into a channel between the outer channel shell and the inner channel shell, namely the second channel flows out, the other part flows into the inner channel shell, namely the first channel, and flows out after being accelerated for the second time by the second-stage pump jet propeller, and finally the two parts of water flow are converged at the outlet end of the outer channel shell, because the water flow speed between the outer channel shell and the inner channel shell is relatively low, and the water flow speed flowing out of the inner channel shell is relatively high, a water jet with uniform and continuous distributed water flow speed gradient is formed, the water flow closer to the center of the outlet end is faster, and the high-speed water flow is wrapped by the low-speed water flow, so that the wrapping can greatly inhibit the jet noise of the high-speed water flow and enhance the concealment of the device.

2) Meanwhile, a rectifying component is arranged at the outlet end of the outer channel shell, and the opening and contraction angles of the rectifying component are adjustable, so that the water flow jet direction can be effectively controlled, the flow of high-speed water flow jet is controlled, the water flow jet speed is increased, reverse thrust is formed, and an object connected with the propulsion device is pushed to advance or the advancing direction is changed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1: the structure of the embodiment of the invention is schematically shown as I;

FIG. 2: the structure of the embodiment of the invention is schematically shown as II;

in the figure: an outer channel shell 1, an inlet end 101, an outlet end 102; an inner passage housing 2; a first stage pump jet propeller 3; a second stage pump jet 4; the rectifying component 5, a support frame 501, a rectifying plate 502, a connecting rod 503, a support base 504 and a slide block 505; a drive device 6; and a power device 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings 1 to 2:

a high-thrust low-noise pump jet propulsion device comprises an outer channel shell 1 and an inner channel shell 2 positioned inside the outer channel shell 1; the outer channel housing 1 comprises an inlet end 101 and an outlet end 102.

Wherein, the inlet end 101 of the outer channel shell 1 is provided with a first-stage pump jet propeller 3, and the outlet end 102 of the outer channel shell 1 is provided with a rectifying component 5 for controlling the water flow direction and the water flow. The inside second stage pump spouts propeller 4 that sets up of interior passageway casing 2, and interior passageway casing 2 is inside to be formed with first passageway. A second passage is formed between the outer passage housing 1 and the inner passage housing 2. When the pump jet propeller works, the first-stage pump jet propeller 3 can suck water flow into the outer channel shell 1, and a part of the water flow sucked into the outer channel shell 1 flows out from a channel between the outer channel shell 1 and the inner channel shell 2, namely a second channel; the other part of the water flows into the inner channel shell 2, namely the first channel, and flows out after being accelerated twice by the second-stage pump jet propeller 4, and finally the two parts of water flow are converged at the outlet end 102 of the outer channel shell 1, and because the water flow speed between the outer channel shell 1 and the inner channel shell 2 is relatively low, the water flow speed flowing out through the inner channel shell 2 is relatively high, the water flow with uniformly and continuously distributed water flow speed gradient can be formed, the water flow closer to the center of the outlet end is faster, and the high-speed water flow is wrapped by the low-speed water flow, so that the wrapping can greatly inhibit the jet noise of the high-speed water flow, and the concealment of the device is enhanced. Preferably, the first-stage pump jet propeller 3 and the second-stage pump jet propeller 4 adopt alternating current motors, the rotation direction (forward rotation or reverse rotation) of the motors is changed by changing the current direction (current phase difference) of alternating current, and the frequency of a power supply is changed by using a frequency converter to regulate the speed, so that the rotation speed and the rotation direction of the first-stage pump jet propeller 3 and the second-stage pump jet propeller 4 can be adjusted.

It should be noted that the first-stage pump jet propeller 3 and the second-stage pump jet propeller 4 may directly adopt the pump jet propeller in the prior art, and may also adopt a propeller to replace the first-stage pump jet propeller 3 and the second-stage pump jet propeller 4, and the diameter of the propeller is designed by the skilled person according to the inner diameters of the outer channel shell 1 and the inner channel shell 2; preferably, however, the number of propellers in each stage is even, for example, 4, 6 or 8 propellers are provided, the number of propellers is symmetrical, the dynamic balance is small, and the vibration generated by the propellers and the medium (such as water) when the propellers rotate is small. Preferably, the rotating speed of the second-stage pump jet 4 is far higher than that of the first-stage pump jet 3, but the rotating speed ratio of the second-stage pump jet 4 to the first-stage pump jet 3 is designed by a person skilled in the art according to the thrust, the number of the propellers, the density of the medium and the like, and the invention is not particularly limited. In addition, the propeller is selected as the pump jet propeller, so that the manufacturing cost of the propeller is low, and the production cost of the whole propulsion device can be effectively reduced. In this embodiment, a large-diameter slow propeller is installed in the outer passage casing 1, a small-diameter high-speed propeller is installed in the inner passage casing 2, and an inner and outer double-layer water jet passage is formed in the propulsion device. Meanwhile, the outlet end 102 of the outer channel shell 1 is provided with the rectifying component 5, and the opening and contraction angles of the rectifying component 5 are adjustable, so that the water jet direction can be effectively controlled, the water jet speed can be increased, reverse thrust is formed, and an object connected with the propulsion device is pushed to advance; the adjustment of the opening and contraction angles of the rectifying component 5 in the invention can be automatic adjustment, and the program of the automatic adjustment is controlled. In addition, the rectifying plate 502 of the rectifying assembly 5 of the present invention is preferably disposed at the outlet end 102 of the outer passage housing 1, and is capable of wrapping the water flow jetted from the inner passage housing 2 to control the direction and speed of the converged water flow. In the invention, the medium sprayed by the high-thrust low-noise pump can be water, but is not limited to water; the invention describes the working process of the device by taking water as a medium.

Further, the outer passage housing 1 may have a cylindrical structure with both ends open, or may have another structure. Preferably, however, the outer channel housing 1 is conical, and the outer channel housing 1 includes a large opening end and a small opening end, and the large opening end is the inlet end 101 of the outer channel housing 1. The inlet end 101 is large in diameter, the size of the placed first-stage pump jet propeller 3 or propeller is large, more water flow is sucked, boosting force is generated, and propelling is facilitated. Similarly, the inner passage casing 2 may also have a cylindrical structure with openings at both ends, or may have other structures, but preferably, the inner passage casing 2 is also conical, and the large opening end of the inner passage casing 2 is disposed near the first-stage pump jet propeller 3, i.e., the inner passage casing 2 and the outer passage casing 1 are disposed in the same direction.

Further, the fairing assembly 5 includes a support frame 501, and a plurality of fairing plates 502 circumferentially disposed along an outer sidewall of the outer channel housing 1, as shown in fig. 1. The outer passage casing 1 is fixedly connected with a support frame 501, the support frame 501 is provided with a plurality of driving devices 6, the output end of each driving device 6 is hinged with a corresponding rectifying plate 502, and each rectifying plate 502 is hinged with the outlet end 102 of the outer passage casing 1. During operation, the driving device 6 is driven to drive the rectifying plate 502 to rotate around the hinge point between the rectifying plate 502 and the outlet end 102 of the outer channel shell 1, so as to control the opening and contraction angles of the rectifying plate 502, thereby effectively controlling the water jet direction, controlling the flow rate of high-speed water jet, increasing the water jet speed, forming a reverse thrust, and pushing an object connected with the propulsion device to advance or change the advancing direction.

It should be noted that the number of the rectifying plates 502 is the same as the number of the support frames 501, the number of the driving devices 6, and the like, and the plurality of support frames 501 are also arranged along the circumferential direction of the outer side wall of the outer channel housing 1, and it is ensured that the installation positions of the support frames 501 correspond to the installation positions of the rectifying plates 502 one to one. In this embodiment, each supporting frame 501 is provided with a driving device 6, an output end of each driving device 6 is hinged to one end of a corresponding connecting rod 503, and the other end of the connecting rod 503 is hinged to a corresponding rectifying plate 502. The driving device 6 is a middle trunnion type cylinder, the driving device 6 can be replaced by other driving devices, and the driving device can be a cylinder or a hydraulic cylinder without specific limitation. In addition, the plurality of support frames 501 in the invention can be fixedly connected into an integrated structure, or can be replaced by a circular support frame, and the circular support frame is fixedly installed on the outer side wall of the outer channel shell 1, and the support frames 501 are not specifically limited in the invention.

In addition, the rectifying component 5 may also adopt another implementation manner, specifically: the fairing assembly 5 includes a support base 504, a plurality of sliders 505, and a plurality of fairing plates 502 circumferentially disposed along the outer sidewall of the outer channel housing 1, as shown in fig. 2. The outlet end 102 of the outer channel housing 1 is fixedly connected to the supporting base 504, the supporting base 504 is provided with a plurality of power devices 7, and the telescopic end of each power device 7 is hinged to a corresponding sliding block 505. Each rectifying plate 502 is provided with a sliding groove structure (not shown in the figure), the sliding groove structure is provided along the length direction of the rectifying plate 502 (the length direction of the rectifying plate 502 is consistent with the axial direction of the outer passage housing 1), and each sliding block 505 is respectively connected with the corresponding sliding groove structure in a sliding manner. And each current plate 502 is hinged with the outlet end 102 of the outer passage housing 1.

Similarly, it should be noted that the number of the current plates 502 is the same as the number of the support bases 504 and the power devices 7, that is, the support bases 504 are also arranged along the circumferential direction of the outer sidewall of the outer channel casing 1, and the mounting positions of the support bases 504 and the mounting positions of the current plates 502 are ensured to be in one-to-one correspondence. Each supporting base 504 is provided with a power device 7, the telescopic end of each power device 7 is hinged with one end of the corresponding connecting rod 503, and the other end of the connecting rod 503 is hinged with the corresponding rectifying plate 502. When the water jet propulsion device works, the power device 7 is driven, the connecting rod 503 drives the sliding block 505 to slide in the corresponding sliding groove structure, and then the rectifying plate 502 is driven to rotate around a hinged point of the rectifying plate 502 and the outlet end 102 of the outer channel shell 1, so that the opening and contraction angles of the rectifying plate 502 are controlled, the water jet direction can be effectively controlled, the water jet speed can be increased, the reverse thrust is formed, and an object connected with the propulsion device is pushed to advance.

It should be further noted that the number of the current plates 502 in the current rectifying assembly 5 is not particularly limited, but preferably, the number of the current plates 502 is 8 or 16.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that the present embodiments be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.