Volute structure provided with composite lining

A composite material, volute technology, used in coatings, liquid fuel engines, components of pumping devices for elastic fluids, etc. Compressor reliability, reduced efficiency of pumps, fans and compressors to reduce gas or liquid flow resistance, improve operational efficiency and reliability, and reduce roughness

Active Publication Date: 2016-11-02
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the volute is mainly manufactured by casting, machining or sheet metal processing, which has the disadvantages of low shape and dimension accuracy and rough surface, resulting in a large and uneven gap between the impeller and the volute, and the cavity between the impeller and the volute It is difficult to precisely control the size of the pump; when the pump, fan and compressor are running, it is easy to generate gas or liquid backflow, which reduces the efficiency of the pump, fan and compressor, and also affects the pressure and flow
At the same time, the inner surface of the volute is rough. When the gas or liquid flows at high speed, the resistance caused by friction increases significantly, which consumes the power of the driving motor and further reduces the efficiency of pumps, fans and compressors.
At the same time, the heat generated by friction will increase the temperature of pumps, fans and compressors, affecting the reliability of pumps, fans and compressors

Method used

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  • Volute structure provided with composite lining
  • Volute structure provided with composite lining
  • Volute structure provided with composite lining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] like figure 1 , figure 2 , image 3 and Figure 4 As shown, the present invention discloses a volute structure provided with a composite material lining 120 , and the volute structure is composed of a volute base 100 and a composite material lining 120 . The volute base 100 is manufactured by traditional casting, machining or sheet metal processing. The liner is made of polymer composite material, which is bonded with the volute base 100 by polymer resin. The volute base 100 has grid-like ribs 110 , which strengthen the polymer lining and prevent the polymer lining from being deformed, degummed and peeled off, and sliding relative to the volute base 100 . The thickness of the polymer composite material liner 120 is about 2-4 mm, and it is made of polymer resin glue as a matrix, adding chopped carbon fiber and other materials; compared with steel materials, the surface roughness of the polymer resin material is relatively low. Adding chopped carbon fiber can strengt...

Embodiment 2

[0045] The invention also discloses a method for manufacturing a volute structure with a composite material liner 120. The volute with a composite material liner 120 manufactured by this method is used in pumps, fans and compressors, which can significantly reduce internal Gas or liquid flow resistance, improving the efficiency and reliability of pumps, fans and compressors, such as Figure 5 As shown, the specific steps of the method are as follows:

[0046] Step S1: Combine Figure 1 to Figure 4 As shown, according to the shape and structure requirements of the volute, the shell of the volute base 100 is designed, and a gap of 2-4 mm is designed at the part where the cavity is formed between the shell of the volute and the impeller, and the gap is used to form a composite lining 120; in addition, a grid-shaped reinforcing rib 110 with a thickness of 1-2 mm is designed at the same time, and the shape and size of other parts of the volute remain unchanged.

[0047] Step S2: ...

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Abstract

The invention discloses a volute structure provided with a composite lining. The volute structure provided with the composite lining comprises a volute base body and the composite lining used for reducing the surface roughness. Reinforcing ribs used for reinforcing the composite lining are arranged in an inner cavity of the volute base body, and a lattice shape is formed by the reinforcing ribs. The composite lining is arranged on the inner wall of the volute base body and fixedly connected with the inner wall provided with the reinforcing ribs. The volute structure provided with the composite lining is simple, reasonable in design and low in manufacturing difficulty; the roughness of the inner cavity of the volute base body can be effectively reduced through the composite lining, and the flowing air resistance of fluid during operation of an impeller is reduced; and the shape and dimension precision of the inner cavity of a formed volute provided with the composite lining is high, uniform gaps between blades and the volute can be accurately controlled, and the operating efficiency and reliability of a pump, a draught fan or a compressor can be obviously improved.

Description

technical field [0001] The invention relates to the field of volute manufacturing, in particular to a volute structure with a composite lining. Background technique [0002] Pumps, fans and compressors are typical fluid machines that increase the pressure of gas or liquid and transport gas or liquid. The pump casing of the pump, the casing of the fan and the compressor (collectively referred to as the volute) and the impeller are the key parts of the pump, fan and compressor. The volute is the base, and the impeller is installed in the volute. The cavity formed between the impeller and the volute sucks gas or liquid at the gas or liquid inlet. With the rotation of the impeller, the position and volume of the cavity change, and the pressure of the gas or liquid is raised and transferred to the gas or liquid outlet to realize gas or liquid delivery. [0003] The precise dimensioning of the cavity between the impeller and volute has a significant impact on the performance, ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D29/02F04D29/62
CPCF04D29/02F04D29/42F04D29/62F05D2300/603F05D2300/611F04D29/4286
Inventor 章争荣程永奇肖小亭张鹏廖恒斌
Owner GUANGDONG UNIV OF TECH
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