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Spiral case of centrifugal type fluids machinery

A fluid machinery, centrifugal technology, applied in mechanical equipment, liquid fuel engines, components of pumping devices for elastic fluids, etc., can solve the problems of unsatisfactory suppression effect, vibration and noise, etc. Small, vibration and noise reduction, significant effect

Inactive Publication Date: 2010-05-12
高其海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the vibration and noise existing in the volute tongue of the existing centrifugal fluid machine, especially the lack of ideal suppression effect on the rest of the noise sound wave, and propose an improved structure of the volute to weaken the volute Vibration and noise caused by the tongue

Method used

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  • Spiral case of centrifugal type fluids machinery
  • Spiral case of centrifugal type fluids machinery
  • Spiral case of centrifugal type fluids machinery

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing, the present invention will be further described

[0016] The utility model relates to a centrifugal fluid mechanical volute suitable for a volute whose cross-section is approximately rectangular, trapezoidal or semicircular. as attached figure 1 Shown is a cross-sectional view of the volute with a sharp and long septum after cutting off one end cover. in the attached figure 1 Among them, the volute includes a front end cover 8, a rear end cover 9, an impeller cavity 1, an outlet pipe 2 is arranged on the outer side of the volute wall 3, and a partition tongue is arranged between the volute wall 3 and the outlet pipe 2, and the characteristic is that the The above-mentioned septal tongue is a pointed elongated tongue extending from the base of the tongue 5 or branched into more than two branches, and the septal tongue is composed of the base of the tongue 5, the body of the tongue 6 and the tip of the tongue 7.

[0017] ...

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Abstract

This invention relates to a centrifugal fluid mechanical turbine casing with one or two tongue-isolation structures used in liquid pumps or gas fans at the cross section of its runner, in which a cavity containing a centrifugal impeller is set in the casing, an outlet pipe is set on the outside wall along the flowing direction and a tongue-isolation is set between the casing and the outlet pipe and extends one or two or more than two branches composed of root 5, body 6 and tip 7 from the root to form a long-tip one, which prolongs the close process of the outlet pipe and avoids sudden change of runners on space so as to reduce vibration and noises when high speed fluid flows out of the outlet of the impeller.

Description

Technical field: [0001] The invention relates to the technical field of centrifugal fluid machinery, in particular to a volute with a tongue structure used for a liquid pump or a gas blower. Background technique: [0002] As we all know, in the interior of the volute of the existing centrifugal fluid machine, when the high-speed fluid beam rushing out of the impeller flow channel passes through the volute flow channel with sudden changes in space, severe vibration and noise will be generated. This kind of vibration not only causes harm to the equipment itself, but also seriously damages the equipment; at the same time, the noise generated at the same time is especially harmful to human health. It is currently a major "public hazard" affecting the environment, especially in the centrifugal fluid machinery manufacturing industry. It has also become one of the keys that must be overcome. [0003] According to the document of Chinese patent ZL00115736, a volute provided with a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42
Inventor 高其海
Owner 高其海