Axial force balance and sealing structure and high power density centrifugal fan

A technology with high power density and sealing structure, applied in the direction of engine sealing, mechanical equipment, radial flow pump, etc., can solve the problems of complex structure of axial force balance device and sealing device, achieve good dynamic characteristics and simplify the system Structure, high-speed rotation and stable effect

Active Publication Date: 2020-06-02
湖南泛航智能装备有限公司
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  • Abstract
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Problems solved by technology

[0003] The invention provides an axial force balance and sealing structure and a high power density centrifugal fan adopting the axial force balance and sealing structure, so as to solve the complex structure of the existing high power centrifugal fan axial force balance device and sealing device technical issues

Method used

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  • Axial force balance and sealing structure and high power density centrifugal fan
  • Axial force balance and sealing structure and high power density centrifugal fan
  • Axial force balance and sealing structure and high power density centrifugal fan

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Embodiment Construction

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered below.

[0028] Such as figure 1 with figure 2 As shown, the preferred embodiment of the present invention provides a high power density centrifugal fan, which includes a base 1, a high-speed gearbox 2, a volute impeller assembly 3, a cabinet 4, an oil radiator 5, Vent valve 6, muffler assembly 7, oil-gas separation assembly 8, three-phase asynchronous motor 9, air outlet pipe 10 and oil filter 11, the cabinet body 4 is installed on the base 1, and the base 1 plays a supporting role, The cabinet 4 plays a role of safety protection, and the high-speed gear box 2, the volute impeller assembly 3, the oil radiator 5, the vent valve 6, the three-phase asynchronous motor 9, the air outlet pipeline 10 and the oil filter 11 are all Installed inside the cabinet body 4 , the nois...

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Abstract

The invention discloses an axial force balancing and sealing structure and a high-power density centrifugal fan. In the axial force balancing and sealing structure, through integral design of an axialforce balance disc and sealing structures, the system structure is simplified; and meanwhile, a mass added on an output shaft is reduced, so that the influence on dynamic characteristics of an outputshaft rotated at a high speed is lower. In addition, three layers of sealing structures are designed to guarantee the sealing reliability. Pressure cavities are designed on two sides of the axial force balance disc; axial force generated by a pressure difference between the two pressure cavities can counteract one part of axial force generated by high-speed rotation of an impeller; cavities on two sides of the axial force balance disc are fully filled with pressure gas; axial vibration energy of the output shaft can be preferably absorbed; and an effect of improving the stability of the output shaft is achieved. Gaps in sealing structures can be filled with thinner gas films to inhibit radial vibration of the output shaft, so that excellent dynamic characteristics of the output shaft areguaranteed, and the high-speed rotation is more stable.

Description

technical field [0001] The present invention relates to the technical field of centrifugal fans, in particular to an axial force balance and sealing structure, and also relates to a high power density centrifugal fan adopting the above-mentioned axial force balance and sealing structure. Background technique [0002] With the development of centrifugal fan equipment in the direction of high speed and high power density, higher requirements are put forward for the sealing of centrifugal impeller and the balance device of axial force. The axial force generated by the centrifugal impeller is small and is directly borne by the bearing, but for high-power high-speed centrifugal fan equipment, the axial force of the centrifugal impeller is relatively large, which may exceed the bearing range of the bearing, so the axial force is generally added to the shaft. Force balance disc, after reducing the axial force, the bearing bears the remaining axial force. However, the existing axia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D17/08F04D29/051F04D29/66F04D29/08F16H57/029F16J15/447
Inventor 张勇
Owner 湖南泛航智能装备有限公司
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