阅读说明：本技术 一种串列式电机泵喷推进器 (Tandem motor pump jet propeller ) 是由 孙凤山 姚君 于 2020-09-17 设计创作，主要内容包括：本发明属于水下推进器领域,具体涉及一种串列式电机泵喷推进器,包括导流管、旋转桨、多绕组串列式电机驱动机构和导流静叶片组,旋转桨和导流静叶片组沿导流管的上游端至下游端的方向依次安装于导流管的内腔,多绕组串列式电机驱动机构用于驱动旋转桨转动以从导流管的上游端吸入水流,导流静叶片组用于对导流管内的水流导向以从导流管的下游端喷出；导流管具有吊舱式安装位。本发明利用多绕组串列式电机驱动机构进行驱动,有利于散热,且串列形式可以减小径向尺寸,降低推进器的迎水面；在旋转桨盘面不变的情况下可以增大扭矩,提高整机功率密度。(The invention belongs to the field of underwater propellers, and particularly relates to a tandem motor pump jet propeller which comprises a flow guide pipe, a rotary paddle, a multi-winding tandem motor driving mechanism and a flow guide static blade set, wherein the rotary paddle and the flow guide static blade set are sequentially arranged in an inner cavity of the flow guide pipe along the direction from the upstream end to the downstream end of the flow guide pipe; the honeycomb duct has a nacelle-type mounting location. The invention utilizes the multi-winding tandem motor driving mechanism to drive, which is beneficial to heat dissipation, and the tandem form can reduce the radial size and reduce the upstream surface of the propeller; under the condition that the surface of the rotating paddle is not changed, the torque can be increased, and the power density of the whole machine is improved.)

1. The utility model provides a tandem motor pump spouts propeller which characterized in that, includes honeycomb duct, rotatory oar, many windings tandem motor actuating mechanism and water conservancy diversion stator blade group, and rotatory oar and water conservancy diversion stator blade group are installed in proper order in the inner chamber of honeycomb duct along the direction of the upper reaches end to the low reaches end of honeycomb duct end in the direction of honeycomb duct, and many windings tandem motor actuating mechanism is used for driving rotatory oar to rotate in order to inhale rivers from the upper reaches end of honeycomb duct, and water conservancy diversion stator blade group is used for leading in order to follow the low reaches end blowout of honeycomb duct to the rivers in the honeycomb duct.

2. The in-line motor pump jet propulsor of claim 1 wherein said multi-winding in-line motor drive includes a cylindrical housing, a motor shaft, and a plurality of drive units in-line outside the motor shaft, the cylindrical housing being coaxially and fixedly mounted within the flow conduit; the motor shaft is coaxially arranged in the cylindrical shell through the combined bearing and is in rotating fit with the cylindrical shell; one end of the motor shaft extends out of the cylindrical shell and is in driving connection with the rotating paddle.

3. The tandem motor pump jet propeller of claim 2, wherein the driving unit comprises a stator winding mounted on an inner wall of the cylindrical housing and a permanent magnet mounted on the motor shaft, the permanent magnet being rotationally coupled to the stator winding.

4. A tandem electric motor pump jet impeller according to claim 2 or 3, wherein the plurality of drive units are equally spaced.

5. The in-line motor pump jet propulsor of claim 2 wherein said combination bearing includes a first bearing and a second bearing, the motor shaft being mounted to the cylindrical housing through the first bearing and the second bearing, respectively.

6. The in-line motor pump jet propeller of claim 2, wherein the rotating propeller comprises a hub and a blade outside the hub, the hub and the blade are of an integral structure, and the hub is coaxially and fixedly connected with the motor shaft.

7. The in-line motor pump jet propeller of claim 1, wherein the set of stationary guide vanes comprises a plurality of guide vanes evenly distributed along the circumference of the inner cavity of the guide tube, the guide vanes directing the water flow to be jetted along a cross-sectional direction of the jet orifice perpendicular to the downstream end of the guide tube.

8. The in-line motor pump jet propeller of claim 1, wherein one of the stator vanes in the stator vane set has a wire passage therein, so that the stator winding is externally connected to a power source through the wire passage.

9. The in-line motor pump jet propulsor of claim 1 wherein the upstream end of the flow conduit has a water inlet diameter greater than the nozzle diameter at the downstream end of the flow conduit.

10. The in-line motor pump jet propeller of claim 1, wherein the draft tube has a pod mounting location and is a multi-segment assembly.

Technical Field

The invention belongs to the field of underwater propellers, and particularly relates to a tandem motor pump jet propeller.

Background

The pump jet propeller is a combined propulsion device consisting of an annular conduit, a stator and a rotor, has the advantages of good maneuverability, high maneuverability, strong anti-cavitation capability and the like, and is applied to ships. For example, patent document No. CN107972837A discloses a combined pump jet propeller, which includes an external conduit, the external conduit is in a contracted shape, two ends of the external conduit are respectively provided with a water inlet and a water outlet, a pump jet propeller and a jet pump propeller are arranged inside the propeller, the pump jet propeller includes a pump jet rotor, a pump jet stator and a pump jet motor, the pump jet motor is fixed in the external conduit through four fixed wings, the rear part of the pump jet motor is connected with the pump jet rotor, the rear part of the pump jet rotor is provided with a pump jet stator for rectification, the pump jet stator is connected with the external conduit, the center of the pump jet stator is provided with a jet pump impeller motor, and the jet pump impeller motor is connected with the jet pump.

However, with the increasing demand for high speed and heavy load, the single motor drive cannot meet the requirement of the pump jet propeller on thrust. Therefore, there is a need in the art to optimize the structure of the propeller.

Disclosure of Invention

Based on the above-mentioned shortcomings in the prior art, the invention provides a tandem motor pump jet propeller.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a tandem motor pump spouts propeller, includes honeycomb duct, rotatory oar, many windings tandem motor actuating mechanism and water conservancy diversion quiet blade group, rotatory oar and water conservancy diversion quiet blade group install in proper order in the inner chamber of honeycomb duct along the direction of the upper reaches end to the low reaches end of honeycomb duct, many windings tandem motor actuating mechanism is used for driving rotatory oar to rotate in order to inhale rivers from the upper reaches end of honeycomb duct, water conservancy diversion quiet blade group is used for leading in order to follow the low reaches end blowout of honeycomb duct to the rivers in the honeycomb duct.

Preferably, the multi-winding tandem motor driving mechanism comprises a cylindrical shell, a motor shaft and a plurality of driving units which are tandem outside the motor shaft, wherein the cylindrical shell is coaxially and fixedly arranged in the flow guide pipe; the motor shaft is coaxially arranged in the cylindrical shell through the combined bearing and is in rotating fit with the cylindrical shell; one end of the motor shaft extends out of the cylindrical shell and is in driving connection with the rotating paddle.

Preferably, the driving unit comprises a stator winding mounted on the inner wall of the cylindrical shell and a permanent magnet mounted on the motor shaft, and the permanent magnet is rotationally matched with the stator winding.

Preferably, the plurality of driving units are distributed at equal intervals.

Preferably, the combined bearing comprises a first bearing and a second bearing, and the motor shaft is mounted on the cylindrical shell through the first bearing and the second bearing respectively.

Preferably, the rotating paddle comprises a hub and a blade positioned outside the hub, the hub and the blade are of an integral structure, and the hub is coaxially and fixedly connected with the motor shaft.

Preferably, the guide static blade group comprises a plurality of guide blades which are uniformly distributed along the circumferential direction of an inner cavity of the guide pipe, and water flow guided by the guide blades is sprayed out along the direction vertical to the section of the nozzle at the downstream end of the guide pipe.

Preferably, one of the guide vanes in the guide vane group is provided with a wire channel, so that the stator winding is externally connected with a power supply through the wire channel.

Preferably, the diameter of the water inlet at the upstream end of the flow guide pipe is larger than the diameter of the nozzle at the downstream end of the flow guide pipe.

Preferably, the guide pipe is provided with a nacelle type installation position, and the guide pipe is of a multi-section type assembly structure.

Compared with the prior art, the invention has the beneficial effects that:

the tandem motor pump jet propeller can avoid complex installation and maintenance of shafting transmission, adopts electric drive, integrates the motor and the rotor blade, and has simple structure; the diversion static blade group is arranged to achieve the water spraying effect;

according to the invention, the plurality of stator windings are connected in series, so that heat dissipation is facilitated, the radial size can be reduced in a serial form, and the upstream surface of the propeller is reduced; under the condition that the surface of the rotating paddle is not changed, the torque can be increased, and the power density of the whole machine is improved.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of a tandem motor pump jet propeller according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a tandem motor pump jet propeller according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of the tandem motor pump jet propeller according to another view angle in the first embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort. In addition, directional terms referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

The first embodiment is as follows:

as shown in fig. 1-3, the tandem motor pump jet propeller of this embodiment includes a flow guide pipe 1, a rotary paddle 2, a multi-winding tandem motor driving mechanism and a flow guide static blade set 3, wherein the rotary paddle 2 and the flow guide static blade set 3 are sequentially installed in an inner cavity of the flow guide pipe 1 along a direction from an upstream end to a downstream end of the flow guide pipe, and the multi-winding tandem motor driving mechanism is configured to drive the rotary paddle 2 to rotate so as to suck water flow from a water inlet 1a at the upstream end of the flow guide pipe; the flow guide static blade group 3 is used for guiding water flow in the flow guide pipe to be sprayed out from a nozzle 1b at the downstream end of the flow guide pipe; the draft tube 1 has a pod-type mounting location 1c, and the pod-type mounting location 1c includes a plurality of fixed mounting holes for pod-type mounting on the underwater vehicle.

The draft tube 1 is of a horn structure with openings at two ends, and the diameter of a water inlet 1a at the upstream end of the draft tube is larger than that of a nozzle 1b at the downstream end of the draft tube, so that the power output of the pump jet propeller is improved. The inside of the draft tube 1 is provided with a guide static blade group 3, and the guide static blade group 3 is used for guiding water flow to be sprayed out along the section direction of a nozzle vertical to the downstream end of the draft tube. The guide static blade group 3 comprises a plurality of guide blades 30 which are uniformly distributed along the circumferential direction of the inner wall of the guide pipe, and the guide blades 30 guide water flow to be sprayed out along the cross section direction of a nozzle perpendicular to the downstream end of the guide pipe, so that the pump spraying propelling force is improved.

Rotatory oar 2 includes propeller hub 2a and the paddle 2b that is located the propeller hub outside, and the circumference evenly distributed of polylith paddle along the propeller hub, propeller hub 2a and paddle 2b structure as an organic whole, both guaranteed the structural strength of rotatory oar, the installation of being convenient for again. In addition, a front guide cone 2c is installed at the right end of the hub 2a to guide the flow of the sucked water.

The multi-winding tandem motor driving mechanism comprises a cylindrical shell 4, a motor shaft 5 and a plurality of driving units which are serially arranged outside the motor shaft, wherein the plurality of driving units are distributed at equal intervals, the stability of power output is improved, and the number of the driving units can be designed according to actual requirements, and is three driving units as shown in fig. 1. Each drive unit comprises a stator winding 6a mounted on the inner wall of the cylindrical housing 4 and a permanent magnet 6b mounted on the motor shaft, the stator winding 6a being clearance-fitted with the permanent magnet 6b so that the permanent magnet 6b is rotation-fitted to the stator winding 6 a. Specifically, as shown in fig. 1, the three stator windings 6a of the present embodiment are uniformly arranged in the inner cavity of the cylinder 4 along the axial direction of the motor shaft, and there are gaps with certain distance between the three stator windings 6 a; the three permanent magnets 6 are uniformly arranged on respective carriers along the axial direction of the motor shaft, the carriers are arranged on the motor shaft 5 in series, and a certain distance of gap is formed between the three carriers, and the gap is consistent with the gap between the stator windings. Any one guide vane of the guide static vane group 3 is provided with a wire channel, so that the stator winding 6a is electrically connected with an external power supply through the wire channel to realize electric drive.

The cylindrical shell 4 is coaxially and fixedly arranged in the inner cavity of the draft tube 1, and the motor shaft 5 is coaxially arranged in the inner cavity of the cylindrical shell 4 through a combined bearing and is in rotating fit with the cylindrical shell 4; specifically, the combined bearing comprises a first bearing 7a and a second bearing 7b, and the motor shaft 5 is mounted at the left and right ends of the cylindrical shell 4 through the first bearing 7a and the second bearing 7b, so that the motor shaft 5 is coaxially and rotationally matched with the cylindrical shell 4. In addition, all the guide vanes 30 are connected to the outer circumferential surface of the cylindrical casing 4, enhancing the structural strength of the overall structure.

As shown in fig. 1, the right end of the motor shaft 5 extends out of the cylindrical housing 4 and is coaxially and fixedly connected with the hub 2a of the rotating paddle, so as to realize driving connection. The left end of cylindrical shell 4 is closed, and cylindrical shell 4's right-hand member has motor end cover 4a through rotary seal spare seal installation, and the second bearing is installed on the motor end cover, and rotary seal spare is located the right side of second bearing, guarantees cylindrical shell 4's leakproofness.

The assembly process of the tandem motor pump jet propeller of the embodiment is as follows:

fixing a plurality of stator windings in an inner cavity of a cylindrical shell, and installing a first bearing; the second bearing is arranged on the motor end cover, then a plurality of carriers are fixed at corresponding positions of the motor shaft, and permanent magnets are arranged on the carriers; the motor shaft is installed with the second bearing, and then with first bearing installation, motor end cover and cylinder installation simultaneously.

A propeller hub of a rotating propeller is matched with a motor shaft and is fixed through a fastener; then fixing the front guide cone and the hub through screws or bolts, and completing installation;

after the installation is finished, the blades and the guide static blade groups are sequentially distributed along the direction from the upstream end to the downstream end of the guide pipe.

The tandem motor pump jet propeller of this embodiment, normal during operation, stator winding circular telegram, the drive motor shaft is rotatory to drive rotatory oar rotatory, rivers are inhaled from the water inlet, and spout the blowout from the spout through the water conservancy diversion of water conservancy diversion stator blade group, produce thrust, realize power output.

The propeller is spouted to tandem motor pump of this embodiment, inside multiunit stator winding and the multiunit permanent magnet of adopting, can increase the motor moment of torsion under the unchangeable condition of radial dimension, and little radial dimension can reserve bigger quotation space for rotatory oar.

Example two:

the tandem motor pump jet propeller of the embodiment is different from the first embodiment in that:

the honeycomb duct of this embodiment is for making the convenience, also can design into multistage formula, assembles between each section and connects, realizes that the structure of tandem motor pump spouts the propeller diversified.

Other structures can refer to the first embodiment.

Example three:

the tandem motor pump jet propeller of the embodiment is different from the first embodiment in that:

the rear end of the cylindrical shell of the embodiment is provided with a rear diversion cone, the rear diversion cone can outwards protrude out of the diversion pipe, and the structural diversification of the tandem motor pump jet propeller is realized.

Other structures can refer to the first embodiment.

The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.