阅读说明：本技术 一种轮缘泵喷驱动装置 (Rim pump spraying driving device ) 是由 金雷 朱庆龙 梁樑 胡薇 汪冰 李星 魏庆军 宋天涯 王帅 朱天翔 于 2021-09-06 设计创作，主要内容包括：本发明公开了一种轮缘泵喷驱动装置,包括在壳体内沿流体流向同轴依次布置的进水导流室、转子以及出水导流室,叶片同轴固定在转子的内圈,位于壳体内定子与转子电磁感应配合,所述定子内圈设置有径向轴承以承受转子的径向载荷,所述转子与进水导流室之间设置有第一轴向轴承以承受转子一侧的轴向载荷,所述转子与出水导流室之间设置有第二轴向轴承以承受转子另一侧的轴向载荷。本发明开创性的将径向轴承设置在转子与定子之间,整个装置的轴向长度大大缩短,且重量大幅度降低,整个装置空间占用率低,实现了轻量化,小型化；由于轴向轴承和径向轴承均为水润滑轴承,整个装置无需任何密封,结构简单且装配方便,安全可靠性高。(The invention discloses a rim pump spray driving device which comprises a water inlet diversion chamber, a rotor and a water outlet diversion chamber which are coaxially and sequentially arranged in a shell along a fluid flow direction, blades are coaxially fixed on an inner ring of the rotor, a stator is positioned in the shell and is in electromagnetic induction fit with the rotor, a radial bearing is arranged on the inner ring of the stator to bear the radial load of the rotor, a first axial bearing is arranged between the rotor and the water inlet diversion chamber to bear the axial load of one side of the rotor, and a second axial bearing is arranged between the rotor and the water outlet diversion chamber to bear the axial load of the other side of the rotor. The radial bearing is creatively arranged between the rotor and the stator, the axial length of the whole device is greatly shortened, the weight is greatly reduced, the space occupancy rate of the whole device is low, and the light weight and the miniaturization are realized; because the axial bearing and the radial bearing are water lubrication bearings, the whole device does not need any seal, and has simple structure, convenient assembly and high safety and reliability.)

1. The rim pump spray driving device is characterized by comprising a water inlet guide chamber (3), a rotor (12) and a water outlet guide chamber (2) which are coaxially and sequentially arranged in a shell (1) along a fluid flow direction, blades (13) are coaxially fixed on an inner ring of the rotor (12), a stator (11) and the rotor (12) which are positioned in the shell (1) are in electromagnetic induction fit, a radial bearing is arranged on the inner ring of the stator (11) to bear the radial load of the rotor (12), a first axial bearing is arranged between the rotor (12) and the water inlet guide chamber (3) to bear the axial load of one side of the rotor (12), and a second axial bearing is arranged between the rotor (12) and the water outlet guide chamber (2) to bear the axial load of the other side of the rotor (12); the inner wall of the water outlet diversion chamber (2) is uniformly provided with curved water outlet diversion sheets (21) to improve the water outlet flow state.

2. The rim pump spray driving device according to claim 1, wherein the stator (11) is provided with stator slots (111) for accommodating stator coils along the axial direction, and each stator slot (111) is uniformly arranged around the rotor (12); the notch of each stator groove (111) faces the working surface of the rotor (12), special-shaped wear-resistant strips (112) matched with the stator grooves (111) in a mortise-tenon mode are arranged at the notches, one end, adjacent to the rotor (12), of each special-shaped wear-resistant strip (112) is in an arc surface shape matched with the working surface of the rotor (12), and each special-shaped wear-resistant strip (112) is in water lubrication fit with the rotor (12) to form a radial bearing.

3. The rim pump spray driving device according to claim 2, wherein the stator slot (111) is a shrinkage slot, the cross section of the special-shaped wear resistant strip (112) is in an "i" shape matched with the shrinkage slot, and the width of the special-shaped wear resistant strip (112) on the outer side of the stator slot (111) is larger than the width of the special-shaped wear resistant strip (112) on the inner side of the stator slot (111).

4. The rim pump spray drive of any one of claims 1 to 3, wherein the first and second axial bearings are water lubricated bearings.

5. Rim pump drive according to claim 4, characterized in that the first slide ring (14) provided on the rotor (12) and the third slide ring (22) on the outlet guide chamber (2) are in water-lubricated rotating fit with each other to form a second axial bearing.

6. Rim pump drive according to claim 4, characterized in that the second slide ring (15) provided on the rotor (12) and the fourth slide ring (32) on the intake guiding chamber (3) are in a water-lubricated rotating fit with each other to form a first axial bearing.

7. A rim pump-jet drive according to any one of claims 1-3, characterized in that the housing (1) is provided with a line chamber (4) for sealingly mounting a cable line (41), the cable line (41) extending through the housing (1) and supplying power to the stator (11).

8. A rim pump jack according to claim 7 wherein the chamber (4) is ellipsoidal to reduce drag under water, the long axis of the chamber (4) being parallel to the direction of fluid flow.

9. A rim pump spray driving device according to any one of claims 1-3, wherein the inner wall of the inlet diversion chamber (3) is provided with inlet diversion sheets (31) in radial array to improve inlet flow state.

Technical Field

The invention relates to the field of propellers, in particular to a rim pump spraying driving device.

Background

With the development of science and technology, the shaft-driven propeller widely used for underwater propulsion of ships has been gradually replaced by a novel rim pump jet propeller due to its large energy loss, difficulty in controlling vibration and noise, and high construction and maintenance costs.

Because the current water navigation ware is miniaturized gradually, the too big volume of rim pump jet propeller has not been suitable for miniaturized navigation ware, and the structure occupation space is big, can't satisfy miniaturized demand, therefore urgently needs the solution.

Disclosure of Invention

In order to avoid and overcome the technical problems in the prior art, the invention provides a rim pump spray driving device. The rim pump spraying driving device is compact in overall structure and low in space occupancy rate, and can meet the installation requirement of a small aircraft.

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

a rim pump spray driving device comprises a water inlet diversion chamber, a rotor and a water outlet diversion chamber which are coaxially and sequentially arranged in a shell along a fluid flow direction, blades are coaxially fixed on an inner ring of the rotor, a stator is positioned in the shell and matched with the rotor in an electromagnetic induction mode, a radial bearing is arranged on the inner ring of the stator to bear the radial load of the rotor, a first axial bearing is arranged between the rotor and the water inlet diversion chamber to bear the axial load of one side of the rotor, and a second axial bearing is arranged between the rotor and the water outlet diversion chamber to bear the axial load of the other side of the rotor; the inner wall of the water outlet diversion chamber is uniformly provided with curved surface-shaped water outlet diversion sheets to improve the water outlet flow state.

As a further scheme of the invention: stator slots for accommodating stator coils are axially formed in the stator, and the stator slots are uniformly distributed around the rotor; the notch of each stator slot faces to the working surface of the rotor, special-shaped wear-resistant strips matched with the stator slots in a mortise-tenon mode are arranged at the notches, one end of each special-shaped wear-resistant strip adjacent to the rotor is in an arc surface shape matched with the working surface of the rotor, and each special-shaped wear-resistant strip is matched with the rotor water in a lubrication mode to form a radial bearing.

As a still further scheme of the invention: the stator slot is a shrinkage slot, the cross section of the special-shaped wear-resistant strip is in an I shape matched with the shrinkage slot, and the width of the special-shaped wear-resistant strip on the outer side of the stator slot is larger than the width of the special-shaped wear-resistant strip on the inner side of the stator slot.

As a still further scheme of the invention: the first axial bearing and the second axial bearing are both water lubrication bearings.

As a still further scheme of the invention: and the first sliding ring arranged on the rotor and the third sliding ring on the water outlet diversion chamber are in water-lubricated rotary fit with each other to form a second axial bearing.

As a still further scheme of the invention: and the second sliding ring arranged on the rotor and the fourth sliding ring on the water inlet diversion chamber are in water-lubricated rotary fit with each other to form a first axial bearing.

As a still further scheme of the invention: the shell is provided with a pipeline chamber used for installing a cable line in a sealing mode, and the cable line penetrates through the shell and supplies power to the stator.

As a still further scheme of the invention: the pipeline chamber is in an ellipsoidal shape to reduce underwater resistance, and the long axis direction of the pipeline chamber is parallel to the flow direction of the fluid.

As a still further scheme of the invention: and the inner wall of the water inlet diversion chamber is provided with water inlet diversion sheets along a radial array so as to improve the water inlet flow state.

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

1. the invention realizes the shaftless operation of the rim pump spraying device, cancels a heavy impeller hub structure and directly fixes the blades on the inner ring of the rotor; axial bearings are arranged between the water inlet diversion chamber and the rotor and between the water outlet diversion chamber and the rotor, so that the rotor can be clamped and positioned, and forward and reverse thrust generated by blades of the rotor during working is borne; the radial bearing is arranged between the rotor and the stator creatively, so that the axial length of the whole device is greatly shortened, the weight is greatly reduced, the space occupancy rate of the whole device is low, and the light weight and the miniaturization are realized; because the axial bearing and the radial bearing are water lubricated bearings, the whole device does not need any seal, and has simple structure, convenient assembly and high safety and reliability; the arrangement of the water outlet flow deflector improves the water outlet flow state of the water outlet end and improves the working efficiency of the device.

2. The special-shaped wear-resistant strips matched with the stator slots in mortise-tenon joint are arranged at the notches of the stator slots, the special-shaped wear-resistant strips are positioned between the stator and the rotor, and the special-shaped wear-resistant strips are integrally combined to form a radial bearing, so that the rotor and the stator are in water lubrication rotation fit; the special-shaped wear-resistant strips can block the stator slots to prevent fluid from directly contacting with the stator coils, and meanwhile, the special-shaped wear-resistant strips are replaceable pieces, so that the special-shaped wear-resistant strips can be replaced in time when the abrasion degree is too high, and the later-stage maintenance is facilitated.

3. The stator slot is a shrinkage slot, and the special-shaped wear-resistant strip is in clamping fit with the shrinkage slot, so that the sealing property of the stator coil is improved more effectively; because the width of the special-shaped wear-resistant strips on the outer side of the stator slot is larger than the width of the special-shaped wear-resistant strips on the inner side of the stator slot, the contact surface of the special-shaped wear-resistant strips and the rotor is effectively improved, local excessive pressure is balanced, and the stability of the working process and the service life of the special-shaped wear-resistant strips are improved.

4. The sliding rings are matched with each other to form the water-lubricated axial bearing, so that the forward and reverse thrust of the rotor is borne, and the axial bearing is convenient to overhaul, replace and install as a whole; due to the ellipsoidal design of the pipeline chamber, the underwater resistance of the device during working is reduced; the arrangement of the water inlet flow deflector improves the water flow state of the water inlet end of the device.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention taken along the radial direction of the housing.

Fig. 3 is a top view of the present invention.

Fig. 4 is a partial enlarged view of the stator slot of the present invention.

In the figure:

1. a housing; 11. a stator; 111. a stator slot; 112. special-shaped wear resistant strips; 12. a rotor;

13. a blade; 14. a first slip ring; 15. a second slip ring;

2. a water outlet diversion chamber; 21. a water outlet flow deflector; 22. a third slip ring;

3. a water inlet diversion chamber; 31. a water inlet flow deflector; 32. a fourth slip ring;

4. a pipeline chamber; 41. a cable line.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of 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.

Referring to fig. 1 to 4, in an embodiment of the present invention, a rim pump jet driving device includes a water inlet diversion chamber 3, a rotor 12, and a water outlet diversion chamber 2 coaxially and sequentially arranged in a fluid flow direction in a housing 1, the water inlet diversion chamber 3, the water outlet diversion chamber 2, an outer ring of the rotor 12, and the housing 1 together enclose to form a stator cavity, and a stator 11 is fixed in the stator cavity and is in electromagnetic induction fit with the rotor 12.

A steel ring is fixed on the inner ring of the rotor 12, and blades 13 for conveying fluid are uniformly arranged on the steel ring.

A first sliding ring 14 is arranged on one side of the rotor 12 adjacent to the water outlet diversion chamber 2, a third sliding ring 22 corresponding to the first sliding ring 14 is arranged on the water outlet diversion chamber 2, and the first sliding ring 14 and the third sliding ring 22 are in water lubrication and rotation fit with each other to form a second axial bearing for bearing the axial load on one side of the rotor 12.

A second slip ring 15 is arranged on one side of the rotor 12 adjacent to the water inlet diversion chamber 3, a fourth slip ring 32 corresponding to the second slip ring 15 is arranged on the water inlet diversion chamber 3, and the second slip ring 15 and the fourth slip ring 32 are in water lubrication and rotation fit with each other to form a first axial bearing for bearing the axial load on the other side of the rotor 12.

The stator 11 is axially provided with stator slots 111 for accommodating stator coils, and the stator slots 111 are arranged in a circumferential array along the stator 11. After the stator coil is wound along the stator slot 111, a waterproof casing is arranged on the stator 11 to cover the winding coil. The notch of the stator slot 111 faces the working face of the rotor 12, and the notch is provided with a special-shaped wear-resistant strip 112 in mortise-tenon joint fit with the stator slot 111.

The stator slots 111 are preferably constricting slots, and the profiled wear strips 112 are preferably in the shape of an "i" shape that matches the shape of the slots of the stator slots 111 to close off the slots of the stator slots 111 to prevent fluid from entering the stator slots 111. One side of the special-shaped wear-resistant strips 112 adjacent to the rotor 12 is arc-surface-shaped to be matched with the working surface of the rotor 12, and the arc surfaces of all the special-shaped wear-resistant strips 112 are integrally matched to form a radial bearing in water lubrication and rotation fit with the rotor 12 so as to bear the radial load of the rotor 12.

In order to increase the contact area with the rotor 12, the width of the special-shaped wear strips 112 outside the stator slots 111 is larger than the width of the special-shaped wear strips 112 inside the stator slots 111, and the special-shaped wear strips 112 can be replaced when the special-shaped wear strips 112 are worn too much.

The top of the shell 1 is provided with an ellipsoidal pipeline chamber 4, and the long axis direction of the pipeline chamber 4 is parallel to the fluid flow direction so as to reduce underwater resistance. The cable lines 41 in the line compartment 4 run through the housing 1 in order to supply the stator 11 with electricity.

The inner wall of the water inlet diversion chamber 3 is provided with water inlet diversion sheets 31 along the radial array, so that water inlet is more uniform. The inner wall of the water outlet diversion chamber 2 is evenly provided with curved water outlet diversion sheets 21, thereby improving the water outlet flow state and improving the propulsion efficiency of the device.

The device is arranged at the bottom of an aquatic vehicle, after a stator 11 is electrified, blades 13 rotate along with a rotor 12, fluid on the side of a water inlet diversion chamber 3 is conveyed to the side of a water outlet diversion chamber 2, and thrust opposite to the flow direction of the fluid is generated, so that the vehicle is propelled.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.