Multi-channel water-jet propulsion pump with unequal amounts of guide blades
A water-jet propulsion and multi-channel technology, which is applied in ship propulsion, propulsion components, ship components, etc., can solve the problems of hydraulic power with noise, impeller cavitation, excitation, etc., and achieve vibration noise, stable operation, and high efficiency Effect
Active Publication Date: 2017-06-13
SHANGHAI JIAO TONG UNIV
View PDF5 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Another way is to increase the speed to improve the efficiency of the propulsion pump, but increasing the speed will cause cavitation in the impeller accompanied by noise and hydraulic vibration, which will seriously affect the safe and stable operation of the propulsion pump
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0039] In this embodiment, the multi-channel water jet propulsion pump with unequal number of blades guide vanes provided by the present invention includes a suction elbow 1, a suction straight pipe 2, an impeller 3, a guide vane multi-channel compartment 4, and guide vane tail cones. 5. Nozzle 6, main shaft 7 and guide vane 8; the outlet of the suction elbow 1 is connected to the inlet of the suction straight pipe 2, the outlet of the suction straight pipe 2 is connected to the inlet of the instal...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a multi-channel water-jet propulsion pump with unequal amounts of guide blades, comprising a suction elbow, a suction straight tube, an impeller, guide blade multi-channel partitions, a guide blade tail cone, a nozzle, a spindle, and guide blades; an outlet of the suction elbow is communicated with an inlet of the suction straight tube, an outlet of the suction straight tube is communicated with an inlet of a mounting cavity of the impeller, an outlet of the mounting cavity of the impeller is communicated with guide blade mounting cavities and the nozzle in sequence, the guide blade tail cone is connected to the tails of the guide blades, the impeller is disposed on the spindle, the guide blade multi-channel partitions are fixed in channels of the guide blades, and skeleton lines of the guide blade multi-channel partitions divide the guide blade channels into j channels, with j being a natural number greater than 1. The guide blade channels are divided into multiple channels, the great flow speed differences between the inner wheel edges and hub sides of the guide blade channels are decreased, flow distribution in the guide blades is under control, the stable operation of the water-jet propulsion pump under high speed and low noise is achieved, and the structure breaks the space limits in water-jet pump design.
Description
technical field [0001] The invention relates to a water jet propulsion pump, in particular to a water jet propulsion pump with multi-channel guide vanes with unequal number of blades. Background technique [0002] With the continuous development of the shipbuilding industry, especially the continuous challenges brought by war to military technology, propeller technology has become the key to determining maritime warfare. Stealth technology and precision guidance technology require propellers not only to have high speed, but also to have low noise . [0003] In terms of military applications, water jet propulsion technology has been used in high-speed attack boats, high-speed car-passenger ferries, naval high-speed transport ships, frigates, corvettes, amphibious armored vehicles and quiet nuclear submarines. special advantage. The water-jet propulsion pump uses the reaction force of the water jetted out of the propulsion pump to push the ship forward. Compared with the con...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B63H11/04B63H11/08
Inventor 王德忠龙云尹俊连
Owner SHANGHAI JIAO TONG UNIV