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The structure to prevent the damage of the sealing ring when the high-speed rotor starts and stops

A technology of high-speed rotors and sealing rings, applied to parts of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve problems affecting the normal operation and damage of high-speed centrifugal fans, and reduce Equipment repair and maintenance costs, extended service life, and simple structure

Active Publication Date: 2016-05-18
WUXI GL TUBRO COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the fan is started and stopped, the shaft in the high-speed rotor will have strong friction with the sealing ring. Since the sealing ring is generally made of aluminum alloy, strong friction can easily lead to its damage, thus affecting the normal operation of the high-speed centrifugal fan. ,need to repair

Method used

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  • The structure to prevent the damage of the sealing ring when the high-speed rotor starts and stops

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0015] As shown in the figure, the structure for preventing the damage of the sealing ring when the high-speed rotor starts and stops in the embodiment mainly consists of shaft 1, bearing 2, gearbox 3, oil sealing ring 4, air sealing ring 5, shaft sleeve 6, sealing plate 7 and Parts such as impeller 8 are formed.

[0016] like figure 1 As shown, the shaft 1 is supported and assembled in the gearbox 3 by two bearings 2, there is a gap between the bearing 2 and the shaft 1, the protruding end of the shaft 1 is installed with the impeller 8, the protruding end of the shaft 1 and the gear box 3 The space is sealed by the shaft 1 end seal assembly; the part of the gearbox 3 corresponding to the extension end of the shaft 1 is provided with a seal installation chamber, and the shaft 1 end seal assembly is assembled in the seal installation chamber; the shaft 1 end ...

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Abstract

The invention relates to a structure for preventing damage to a sealing ring when a high-speed rotor starts and stops, including a shaft, a bearing and a gear box. inside the cavity; the oil seal ring is fixed at the bottom of the seal installation cavity, the oil seal ring is set on the shaft, and there is a gap between the oil seal ring and the shaft; the seal plate is set outside the oil seal ring, and the seal plate is fixed on the gear box. The plate sleeve is set on the shaft, and the shaft sleeve is set between the inner hole of the sealing plate and the shaft, and the shaft sleeve is connected with the sealing plate, and there is a gap between the shaft sleeve and the shaft; the air sealing ring is set between the sealing plate and the oil sealing ring , the air seal ring is fixed on the sealing plate, the air seal ring is set on the shaft, and there is a gap between the air seal ring and the shaft; the gap between the shaft sleeve and the shaft is smaller than the gap between the oil seal ring and the shaft and the air seal ring clearance from the shaft. The invention can effectively prevent the sealing ring from being damaged, and ensure the long-term normal operation of the blower fan.

Description

technical field [0001] The invention relates to a structure for preventing damage to a sealing ring when a high-speed rotor used in a high-speed centrifugal fan is started and stopped, and belongs to the technical field of mechanical structures. Background technique [0002] In the prior art, since the center of gravity of the high-speed rotor of the high-speed centrifugal fan is located outside the supporting points of the two bearings, the high-speed rotor is subjected to gravity when the fan is at rest, and the shaft first contacts the sealing ring. When the fan starts and stops, the shaft in the high-speed rotor will have strong friction with the sealing ring. Since the sealing ring is generally made of aluminum alloy, strong friction can easily cause damage to it, thus affecting the normal operation of the high-speed centrifugal fan. ,need to repair. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages, thereb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/12
Inventor 戴勤生
Owner WUXI GL TUBRO COMPRESSOR
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