CN215399280U

CN215399280U - Water jet based on direct-drive type multistage supercharging structure

Info

Publication number: CN215399280U
Application number: CN202120320695.7U
Authority: CN
Inventors: 陈守田; 张彦; 欧阳武
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2022-01-04
Anticipated expiration: 2031-02-04

Abstract

The utility model discloses a water jet propeller based on a direct-drive multi-stage pressurization structure, comprising a main body shell serving as a water flow channel, a turbine, a waterproof motor and a booster paddle installed in the main body shell. One end is a water inlet, and the other end is a water jet; the waterproof motor is a slender shaft motor, and the shaft motor includes a stator shaft and a rotor casing that are installed in cooperation with each other, and the two ends of the stator shaft are respectively installed on the rotating pair. It is arranged on the brackets of the water inlet and the water jet, and the turbine and the booster paddle are sequentially and coaxially installed on the stator casing. The utility model can improve the power density of the device and the energy utilization rate of the device through the appealing structure, thereby realizing more energy-saving and efficient advancement.

Description

Water jet based on direct-drive type multistage supercharging structure

Technical Field

The utility model belongs to the field of marine equipment, relates to a propeller, and particularly relates to a water-jet propeller based on a direct-drive multistage supercharging structure.

Background

A propeller is a device on a vessel that generates kinetic energy. The propeller is the most common propeller, and the propeller is arranged on a propulsion shaft below a waterline at the tail part of the boat, and the propulsion shaft is driven by a main machine to rotate together, so that water is sucked from a suction surface of a blade and discharged from a discharge surface, and the boat is pushed to advance by using the reaction force of the water. The traditional propeller needs a main shaft with excellent mechanical property, has extremely high requirements on the manufacturing process of the main shaft, has lower transmission efficiency of the mechanical main shaft, and can cause serious environmental pollution problem by using a large amount of oily lubricant.

In recent years, a water jet propeller is emerging. The water jet propeller is a propeller in which the jet part of the propulsion mechanism is immersed in water and the reaction force generated by the jet water flow is used to drive the ship to advance. The water pump, the pipeline, the suction port, the nozzle and the like are used for the middle and high-speed ships such as the planing boat, the wave-penetrating boat, the hydrofoil boat, the hovercraft and the like, and have the advantages of shallow draft, good passing performance in a complex water area, simple transmission mechanism, small accessory resistance and the like. However, the traditional water jet propulsion system still has the defects of complex mechanical transmission mechanism, low transmission efficiency, low power density and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, provides a water-jet propeller designed based on a direct-drive type multistage supercharging structure, and improves the power density and the transmission efficiency of the water-jet propeller.

The purpose of the utility model is realized as follows:

the utility model provides a water jet propulsion ware based on direct-drive formula multistage pressure boost structure which characterized in that: the water-saving device comprises a main body shell serving as a water flow channel, and a turbine, a waterproof motor and a pressurizing paddle which are arranged in the main body shell, wherein one end of the main body shell is provided with a water inlet, and the other end of the main body shell is provided with a water jet; the waterproof motor is a long and thin shaft type motor, the shaft type motor comprises a stator shaft and a rotor shell which are matched with each other, two ends of the stator shaft are respectively installed on a support arranged at the water inlet and the water jet through revolute pairs, and the turbine and the pressurizing paddle are sequentially and coaxially installed on the stator shell.

As an improvement, the water inlet is arranged on a fence which prevents foreign matters from entering the interior of the propeller.

As an improvement, the water spray nozzle is provided with a drainage ring based on the coanda effect.

As an improvement, the supercharging propeller is a spiral supercharging propeller.

As an improvement, two ends of the stator shaft are respectively arranged on a bracket arranged at the water inlet and the water jet through thrust bearings.

As an improvement, the appearance of the main body shell is a streamline shape with a large middle and two small ends.

Compared with the prior art, the utility model has the beneficial effects that:

1) the structural design of water inlet can play the effect of fixed motor on the one hand, thereby the fence structure of on the other hand design can prevent that the foreign matter from getting into the inside effect that plays the protection propeller of propeller.

2) The multistage supercharging structure composed of the turbine and the supercharging paddle can improve the power utilization rate of the motor and the power density of the water-jet propeller, and meanwhile, the multistage supercharging structure is directly driven by the waterproof motor, so that a shafting transmission structure is omitted, the power loss in the transmission process is avoided, and the efficiency of the device can be improved.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a partial sectional structural schematic diagram of a water jet propeller based on a direct-drive multi-stage supercharging structure.

Fig. 2 is a schematic view of the installation relationship of a waterproof motor, a turbine and a pressurizing paddle.

Fig. 3 is a schematic structural view of a waterproof motor.

In the figure: 1-water inlet, 2-main body shell, 3-water jet, 4-turbine, 5-waterproof motor, 51-stator shaft, 52-rotor shell, 6-pressurizing paddle, 7-thrust bearing, 8-bracket, 9-fixing part, 10-lead hole, 11-fence and 12-lead ring.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 to 3, a water jet based on a direct drive type multistage supercharging structure comprises a main body housing 2, a turbine 4, a waterproof motor 5 and a supercharging paddle 6, wherein the turbine 4, the waterproof motor 5 and the supercharging paddle 6 are installed in the main body housing 2, a water channel is arranged in the main body housing 2, the inner shape and the outer shape of the water channel are consistent, one end of the main body housing 2 is a water inlet 1, the other end of the main body housing 2 is a water spray port 3, and the water inlet 1 and the water spray port 3 of the main body housing 2 are respectively provided with a support 8; waterproof motor 5 is long and thin axle type motor, and axle type motor is including stator shaft 51 and the rotor housing 52 of mutually supporting the installation, stator shaft 51 both ends are installed on the support 8 of locating water inlet 1 and water jet 3 through thrust bearing 7 respectively, turbine 4 and pressure boost oar 6 coaxial fixed mounting in proper order are on stator housing, and wherein turbine 4 is close to water inlet 1 one end.

The water inlet 1 is arranged on a fence for preventing foreign matters from entering the propeller, the water spraying port 3 is provided with a drainage ring 12 based on the coanda effect, and the pressurizing paddle 6 is a spiral pressurizing paddle 6. The main body casing 2 is in a streamline shape with a large middle and two small ends, the two ends of the main body casing 2 are in an asymmetric structure as a whole, and the maximum diameter is the position close to the water inlet 11/3.

In this embodiment, a fixing portion 9 for being mounted on the hull is further disposed on the main body casing 2, a lead hole 10 leading into the main body casing 2 is disposed in the middle of the fixing portion 9, the electric wire passes through the lead hole 10 and then is connected to a wiring port of the waterproof motor 5, the wiring port of the waterproof motor 5 is generally disposed on the stator shaft 51, the prior art is specifically adopted, and detailed description is omitted in this embodiment.

The turbine 4 and the pressurizing paddle 6 are sequentially fixed on the rotor shell 52 of the waterproof motor 5, so that the power of the waterproof motor 5 can be fully output, and the power density of the device is improved. And the turbine 4 and the supercharging paddle 6 are fixed on the motor rotor, and a transmission mechanism is not arranged between the turbine 4 and the supercharging paddle, so that the transmission efficiency of the device is improved, and the power loss caused by transmission is avoided.

As shown in fig. 3, the schematic structure of the waterproof motor 5 is shown, the main structure of the waterproof motor includes a stator shaft 51 and a rotor housing 52 that are installed in cooperation with each other, and for the prior art, a submersible motor developed by the department of submersible motor technology in the field of tianjin ott pump industry can be specifically used.

After the waterproof motor 5 is electrified, the waterproof motor 5 directly drives the turbine 4 fixedly installed on the rotor shell 52 and the pressurizing paddle 6 to rotate, and the power is sequentially provided, water flows in from the water inlet 1, does work through the turbine 4 and the pressurizing paddle 6 and accelerates, and flows out from the water jet 3 to generate jet flow so as to provide thrust.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the utility model. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. The utility model provides a water jet propulsion ware based on direct-drive formula multistage pressure boost structure which characterized in that: the water-saving device comprises a main body shell serving as a water flow channel, and a turbine, a waterproof motor and a pressurizing paddle which are arranged in the main body shell, wherein one end of the main body shell is provided with a water inlet, and the other end of the main body shell is provided with a water jet; the waterproof motor is a long and thin shaft type motor, the shaft type motor comprises a stator shaft and a rotor shell which are matched with each other, two ends of the stator shaft are respectively installed on a support arranged at the water inlet and the water jet through revolute pairs, and the turbine and the pressurizing paddle are sequentially and coaxially installed on the stator shell.

2. The water jet propeller based on the direct-drive type multistage supercharging structure as claimed in claim 1, wherein: the water inlet is arranged on a fence which prevents foreign matters from entering the interior of the propeller.

3. The water jet propeller based on the direct-drive type multistage supercharging structure as claimed in claim 1, wherein: the water jet is provided with a drainage ring based on the coanda effect.

4. The water jet propeller based on the direct-drive type multistage supercharging structure as claimed in claim 1, wherein: the supercharging propeller is a spiral supercharging propeller.

5. The water jet propeller based on the direct-drive type multistage supercharging structure as claimed in claim 1, wherein: and two ends of the stator shaft are respectively arranged on a bracket arranged at the water inlet and the water spray nozzle through thrust bearings.

6. The water jet propeller based on the direct-drive type multistage supercharging structure as claimed in claim 1, wherein: the main body shell is in a streamline shape with a large middle and two small ends.