High-efficiency high pressure head three-dimensional flow impeller

A ternary flow and impeller technology, applied in pump elements, components of pumping devices for elastic fluids, non-variable-capacity pumps, etc., can solve the problems of low pressure head, large error, low efficiency, etc.

Inactive Publication Date: 2014-03-26
HUBEI BLOWER WORKS
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional one-dimensional design method simplifies the process of gas flow in the impeller stage. In the high-speed and high-pressure ratio stage, the error is often large, the efficiency is low, the pressure head is not high, and the impeller is milled and manufactured with high cost.

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Embodiment Construction

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] exist figure 1 , figure 2 and image 3 Among them, the impeller is welded by the blade 1 and the disc 2, the disc 2 has a tapered hole 3, the periphery of the disc 2 is a disc 4 of unequal thickness, and the pressure surface of the blade 1 and the surface of the welding seam are sprayed with nickel-chromium alloy The powder layer 5 has a thickness of 0.2-0.3 mm.

[0012] The material of blade 1 is precipitation hardening stainless steel FV520B, and the material of disc 2 is 15MnNiCrMoV, both of which are anti-corrosion. The welding seam is welded by FV520B special electrode; The energy head of the back-curved blade is about 20% higher. Under the same energy head, the diameter of the impeller is reduced, so the radius of the volute is also reduced, which greatly reduces the cost; the design of the air guide section at the inlet of blade 1 is sim...

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Abstract

The invention relates to the field of impellers and provides a high-efficiency high pressure head three-dimensional flow impeller. The high-efficiency high pressure head three-dimensional flow impeller is characterized in that the impeller is formed by welding blades and a wheel disc, the wheel disc is provided with a taper hole, discs different in thickness are arranged on the periphery of the wheel disc, a nichrome powder layer is arranged on the pressure surfaces of the blades and the surfaces of weld joints in a jet plating mode, and the thickness of the nichrome powder layer ranges from 0.2mm to 0.3mm. By the adoption of the technical scheme, efficiency is high, a pressure head is high, manufacturing cost is low, and the impeller is of a semi-pen type and is convenient to machine and manufacture.

Description

technical field [0001] The invention relates to the field of impellers, and is a high-efficiency high-pressure head ternary flow impeller. Background technique [0002] With the application of ternary flow technology in fan design more and more widely, it has become the development trend of fan design to use CFD technology to analyze the internal flow field of impeller machinery and design an efficient and accurate impeller. The traditional one-dimensional design method simplifies the process of gas flow in the impeller stage. In the high-speed and high-pressure ratio stage, the error is often large, the efficiency is low, the pressure head is not high, and the impeller is milled and manufactured at a high cost. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a ternary flow impeller with high efficiency, high pressure head and low manufacturing cost. [0004] The technical scheme of the present invention is: it is characterized in that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/26F04D29/02
Inventor 熊俊杰杨洁曾令虎
Owner HUBEI BLOWER WORKS
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