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A radial floating labyrinth seal between a rotating part and a stationary part

A labyrinth seal and static part technology, applied in the direction of engine seals, engine components, mechanical equipment, etc., can solve the problems of poor radial floating ability, difficult to ensure the coaxiality of rotating parts and static parts, etc., to avoid friction, use Convenient operation and good coaxiality

Active Publication Date: 2021-10-29
MCQUAY AIR CONDITIONING & REFRIGERATION SUZHOU
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The present invention provides a radially floating labyrinth seal between a rotating part and a stationary part. The problem of coaxiality of stationary parts

Method used

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  • A radial floating labyrinth seal between a rotating part and a stationary part
  • A radial floating labyrinth seal between a rotating part and a stationary part
  • A radial floating labyrinth seal between a rotating part and a stationary part

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Embodiment

[0027] Embodiment: A radial floating labyrinth seal between a rotating part and a stationary part

[0028] Such as Figure 1-4 As shown, the radial floating labyrinth seal includes a rotating part 1 and a stationary part 2 (see figure 1 ), wherein the rotating member 1 is fixedly connected to a rotating shaft 19, and the rotating shaft 19 is rotatably supported by a bearing 20 (see figure 1 ). The rotating part 1 is provided with an outer circle section for sealing, and the stationary part 2 is provided with an inner circle section for sealing. In the assembled state, the outer circle section is matched with the inner circle section, and labyrinth sealing teeth are arranged between the mating surfaces. shape structure (see figure 2 ).

[0029] An annular mount 3 is provided on the periphery of the stationary part 2 (see figure 1 ), there is an annular floating gap between the mounting base 3 and the stationary part 2, so that the stationary part 2 can float radially in t...

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Abstract

A radial floating labyrinth seal between the rotating part and the stationary part, including the rotating part and the stationary part, is characterized in that: firstly, an annular mounting seat is arranged on the periphery of the stationary part, and the gap between the mounting seat and the stationary part is An annular floating gap is reserved so that the stationary part can float radially in the annular floating gap. Then, at least three radially adjustable elastic support structures are evenly arranged in the circumferential direction between the mounting seat and the stationary part, and each radially adjustable elastic support structure is at least composed of a pressing rod, a first spring and a radial screw plug connection . When the rotating part fluctuates or jumps in the radial direction due to inertia, gravity, dynamic and static balance, etc., the stationary part adapts to the fluctuation or jumping of the rotating part by following the radial floating with the help of the radially adjustable elastic support structure, thus Better guarantee the coaxiality of the rotating part and the stationary part during operation.

Description

technical field [0001] The invention belongs to the technical field of sealing structures, in particular to a radial floating labyrinth seal between a rotating part and a stationary part. Background technique [0002] In mechanical devices and mechanical equipment, it is often necessary to provide a sealing structure between the rotating part (rotary shaft or rotor) and the stationary part (housing or seat) to meet the sealing requirements. In some occasions, there are not only sealing requirements between the rotating part and the stationary part, but also high sealing requirements. For example, in a centrifugal compressor in fluid machinery, the impeller is a rotating part, one side of which is a high-pressure chamber, and the other side is a low-pressure chamber. The two form a pressure difference in the axial direction, so it is necessary to apply a seal between the impeller shaft and the seat. , so as to play a sealing role before and after the impeller. [0003] A la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/16F16J15/447
CPCF16J15/16F16J15/445F16J15/447
Inventor 何小龙叶学金姜福银胡鹏林
Owner MCQUAY AIR CONDITIONING & REFRIGERATION SUZHOU
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