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A Dynamic Strong Swirl Ejector

An ejector and dynamic technology, which is applied in jet pumps, machines/engines, non-volume pumps, etc., can solve the problems of low energy transfer efficiency and poor adjustability of static ejectors, and achieve good economic benefits and supercharging The effect of performance improvement and small size

Active Publication Date: 2017-03-08
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems existing in the prior art, the present invention provides a dynamic strong swirl ejector, the purpose of which is to use an external power source to drive the spiral impeller to accelerate the rotation, and to change the fluid ejection capacity by adjusting the rotational speed, effectively improving the static Problems of low energy transfer efficiency and poor adjustability of ejector

Method used

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  • A Dynamic Strong Swirl Ejector
  • A Dynamic Strong Swirl Ejector
  • A Dynamic Strong Swirl Ejector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 A structural diagram of a dynamic strong swirl ejector using double helical impellers is shown. The helical impeller adopts a double helical impeller 5, and the main body of the machine is a vertical structure, including an external body composed of a cylinder body 16, a motor base 10, a bearing box 9, a shrinkage tube 3, a diffuser tube 1 and a throat tube 2. They are fixedly connected together in turn, and a double helical impeller 5, a main shaft mechanism, a main shaft supporting device and a main shaft sealing device are arranged inside the machine body. The main shaft mechanism is composed of a motor 11 connected to a driving main shaft 13 through a shaft coupling 12, and the working speed of the driving main shaft 13 can be adjusted. The main shaft support device uses a pair of bearings 8 with a specific span installed in the bearing box 9 as a support, combined with the mechanical seal box 7 connected to the bearing box 9 to form a cantilever structure...

Embodiment 2

[0026] image 3 A structural diagram of a dynamic strong swirl ejector using a single helical impeller (variable diameter, variable helix angle) is shown. The helical impeller adopts a single helical impeller 18. The blade diameter, pitch, shaft diameter, and helix angle of the single helical impeller 18 are all determined by specific working conditions. The shaft sleeve of the single helical impeller 18 is connected to the hollow shaft section of the driving main shaft 13 by using a connecting key 4 and a fixing nut 4a, and there are a plurality of second ejection holes communicating with the central hole 13d of the driving main shaft and having a square cross section. hole 18a.

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Abstract

The invention discloses a strong dynamic ejector and belongs to cyclone pressurizing devices for various kinds of fluid. According to the strong dynamic cyclone ejector, a double-helix impeller or a single-helix impeller is used for obtaining a strong cyclone field, a single-direction momentum is converted into a multi-direction momentum, and thus efficient and high-supercharge-ratio ejection is completed. The ejector is of a vertical structure and comprises an external machine body, the double-helix impeller or the single-helix impeller, a main shaft mechanism, a main shaft supporting device and a main shaft sealing device, wherein the external machine body is composed of a motor base, a bearing box, a cylinder, a shrinkage pipe, a throat pipe and a diffuser pipe. A cantilever structure supported by a specific span bearing is adopted by the main shaft supporting device, and a mechanical seal arranged in a sealing box is adopted by the main shaft sealing device. According to the strong dynamic cyclone ejector, the double-helix impeller or the single-helix impeller rotates at a high speed to obtain a strong cyclone field, so that efficient momentum conversion is achieved, the size of the ejector can be obviously reduced, ejecting efficiency is improved, operation is stable, and adaptability is high; the ejector is simple in structure, easy to maintain and can be widely applied to multi-phase or single-phase pressurizing occasions.

Description

technical field [0001] The invention relates to a dynamic strong swirl ejector, which belongs to the technical field of pressurization application of various fluids and pressure gas jets. Background technique [0002] Ejector is a kind of fluid machinery and mixed reaction equipment that utilizes jet turbulent diffusion to transfer energy and mass. Compared with vacuum machinery, the ejector equipment is simple and reliable, the connection between the ejector and the equipment is simple, and the manufacturing is not complicated. In recent years, ejectors have been widely used in technical fields such as energy power, petrochemical industry, national defense and military industry, electric heating, metallurgy and mining, construction, refrigeration, brewing, pharmaceuticals, and solar seawater desalination. [0003] The ejector uses the jet effect of the high-pressure fluid to suck the low-pressure fluid for mass transfer and momentum exchange, and then completes the pressur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04F5/04F04F5/10F04F5/16F04F5/24F04F5/44
CPCF04F5/00F04F5/44
Inventor 代玉强朱彻胡大鹏陶盛洋张斯亮刘航武锦涛
Owner DALIAN UNIV OF TECH