Compressor impeller dismounting device of centrifugal steam compressor

Abstract

The utility model discloses a compressor impeller dismounting device of a centrifugal steam compressor, which can more easily dismount a compressor impeller and save manpower. Comprising a transverse plate, one end of the transverse plate fixes a vertical plate, one end of the vertical plate fixes a square plate, the square plate fixes a hanging plate extending downwards, and an L-shaped limiting face is arranged at the bottom of the square plate; the lower portion of the hanging plate is sleeved with a pressing sleeve, the pressing sleeve is used for being arranged on an impeller locking nut in a sleeved mode, the end face of one end of the pressing sleeve is used for being pressed on an air compression impeller for positioning, the other end of the pressing sleeve is provided with a first threaded hole, one end of a threaded rod is in threaded fit with the first threaded hole, and the end of the threaded rod is provided with a second threaded hole. The other end of the threaded rod is sequentially sleeved with a positioning nut and a threaded rod sleeve to form threaded fit, the peripheral face of the threaded rod sleeve is in threaded fit with a limiting nut, and the outer surface of the limiting nut is matched with the L-shaped limiting face of the square plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal steam compressor technical field especially relates to a centrifugal steam compressor's pressure gas impeller dismounting device. BACKGROUND

[0002] The structure of centrifugal compressor is as shown in the figure, Figure 1 The high speed shaft is connected with the pressure gas impeller by impeller pull rod, and is fastened by lock nut. The pressure gas impeller is the core component of centrifugal steam compressor. Because of large diameter and heavy weight, it is impossible to lift by hand, and the lifting hole cannot be processed in the lifting direction, which will affect the dynamic balance and strength of the pressure gas impeller. The dismounting of the pressure gas impeller becomes difficult. SUMMARY

[0003] The utility model discloses a centrifugal steam compressor's pressure gas impeller dismounting device can dismount the pressure gas impeller more easily and save manpower.

[0004] The utility model discloses a centrifugal steam compressor's pressure gas impeller dismounting device can dismount the pressure gas impeller more easily and save manpower.

[0005] A centrifugal steam compressor's pressure gas impeller dismounting device, including the horizontal plate, the one end of horizontal plate is fixed to the vertical plate that extends downward, the one end of vertical plate is fixed to the square board, the extension direction of square board is same with horizontal plate, the extension end of square board is fixed to the hanging plate that extends downward, and the other end bottom of square board is provided with L shape limit surface,

[0006] The lower part of hanging plate is sleeved with the pressing sleeve, and clearance fit is formed, the pressing sleeve is used for being sleeved on the impeller lock nut, and clearance fit is formed, the end face of one end of pressing sleeve is used for pressing on the pressure gas impeller and positioning, the other end of pressing sleeve is equipped with the first threaded hole, the one end of threaded rod is screwed in the first threaded hole, the one end of threaded rod is equipped with the second threaded hole, the second threaded hole is used for being sleeved on the impeller pull rod and screwing,

[0007] The outer circumferential surface of threaded rod sleeve is stepped shaft, the outer circumferential surface small diameter section of threaded rod sleeve is screwed with the limit nut, the limit nut limits the axial position of one end, the outer surface of limit nut cooperates with the L type limit surface of square board, the L type limit surface of square board is positioned to limit nut circumferentially, and the axial position of the other end of limit nut is limited.

[0008] Preferably, the one end of threaded rod provided with threaded rod sleeve is equipped with tool cooperation surface, and the tool cooperation surface is used for cooperating with the tool and turning the threaded rod.

[0009] Preferably, a row of lifting holes is arranged on the hanging plate along the longitudinal direction, and is used for lifting according to the actual gravity center position of the pressure gas impeller.

[0010] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0011] Previously, compressor impellers were small in diameter and lightweight, making them easy to install and disassemble by hand. This invention solves the problem of difficult disassembly during horizontal installation of compressor impellers. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of a centrifugal steam compressor;

[0013] Figure 2 Axonometric drawing of this utility model;

[0014] Figure 3 A schematic diagram of the structure of this utility model;

[0015] Figure 4 A schematic diagram illustrating the use of this utility model.

[0016] Figure Labels

[0017] In the attached diagram, 1-hanging plate, 2-pressure sleeve, 3-threaded rod, 4-positioning nut, 5-threaded rod sleeve, 6-square plate, 7-vertical plate, 8-upper bolt, 9-upper nut, 10-upper washer, 11-horizontal plate, 12-lower bolt, 13-lower nut, 14-lower washer;

[0018] 21-Impeller locking nut, 22-Impeller tie rod, 23-Compressor impeller, 24-High-speed shaft, 25-Diffuser. Detailed Implementation

[0019] A centrifugal steam compressor impeller disassembly device, the impeller disassembly device as follows: Figure 2 and Figure 3As shown, mainly by the hanging plate 1, the compression sleeve 2, the threaded rod 3, the square plate 6, the threaded rod sleeve 5, the vertical plate 7, the horizontal plate 11. One end of the horizontal plate 11 is fixed to the downward extending vertical plate 7, one end of the vertical plate 7 is fixed to the square plate 6, the extending direction of the square plate 6 is the same as the horizontal plate 11, the extending end of the square plate 6 is fixed to the downward extending hanging plate 1, the other end of the square plate 6 is provided with an L-shaped limiting surface. The lower part of the hanging plate 1 is sleeved with the compression sleeve 2, and a clearance fit is formed, the compression sleeve 2 is used to be sleeved on the impeller locking nut, and a clearance fit is formed, the end face of one end of the compression sleeve 2 is used to press on the compression gas impeller for positioning, the other end of the compression sleeve 2 is provided with a first threaded hole, one end of the threaded rod 3 is threadedly connected in the first threaded hole, the end of the threaded rod 3 is provided with a second threaded hole, the second threaded hole is used to be threadedly connected on the impeller pull rod, the other end of the threaded rod 3 is sequentially sleeved with the positioning nut 4 and the threaded rod sleeve 5, and a threaded connection is formed, the outer circumferential surface of the threaded rod sleeve 5 is in the shape of a stepped shaft, the outer circumferential surface of the threaded rod sleeve 5 is threadedly connected with a limiting nut, the positioning nut 4 limits the axial position of one end of the limiting nut, the outer surface of the limiting nut is matched with the L-shaped limiting surface of the square plate 6, the L-shaped limiting surface of the square plate 6 circumferentially positions the limiting nut and limits the axial position of the other end of the limiting nut.

[0020] Specifically:

[0021] The hanging plate 1 passes through the compression sleeve 2 from the rear, between the vertical plate 7 and the horizontal plate 11, between the vertical plate 7 and the square plate 6, and the square plate 6 and the hanging plate 1 are fastened with screws respectively. The threads of the impeller pull rod are consistent with the threads of the inner hole of the threaded rod 3. A row of lifting holes are arranged on the hanging plate 1, different holes can be selected for lifting according to the actual center of gravity. When the compression gas impeller is disassembled, the compression sleeve 2 is installed on the threaded rod 3, as shown in Figure 4 The end of the threaded rod 3 is provided with a tool matching surface, a Φ10 hand lever tool is used to rotate the threaded rod 3 to the impeller pull rod, the compression sleeve 2 is rotated to compress the compression gas impeller, and the threaded rod sleeve 5 is rotated to the threaded rod 3; when lifting, the center of gravity is adjusted, the lifting hole position on the hanging plate 11 is changed according to the center of gravity, the square plate 6 is finely adjusted, and finally the compression gas impeller and the whole main shaft are horizontal. The compression gas impeller is slowly pulled out until it is disassembled.

[0022] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the utility model and not to limit, although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the range defined by the claims of the utility model.

Claims

1. A centrifugal vapor compressor impeller disassembly device, characterized by: The horizontal plate has one end fixed with a downward extending vertical plate, one end of the vertical plate is fixed with a square plate, the square plate extends in the same direction as the horizontal plate, the extending end of the square plate is fixed with a downward extending hanging plate, the other end of the square plate is provided with an L-shaped limiting surface at the bottom; The lower part of the hanging plate is sleeved with a pressing sleeve in clearance fit, the pressing sleeve is used to be sleeved on the impeller locking nut in clearance fit, the end face of one end of the pressing sleeve is used to be pressed on the air compressor impeller for positioning, the other end of the pressing sleeve is provided with a first threaded hole, the first threaded hole is in threaded fit with one end of a threaded rod, the end of the threaded rod is provided with a second threaded hole, the second threaded hole is used to be sleeved on the impeller pull rod in threaded fit, the other end of the threaded rod is sequentially sleeved with a positioning nut and a threaded rod sleeve in threaded fit, the outer circumferential surface of the threaded rod sleeve is in stepped shaft shape, the outer circumferential surface of the threaded rod sleeve is in threaded fit with a limiting nut, the positioning nut limits the axial position of one end of the limiting nut, the outer surface of the limiting nut is matched with the L-shaped limiting surface of the square plate, the L-shaped limiting surface of the square plate circumferentially positions the limiting nut and limits the axial position of the other end of the limiting nut.

2. A centrifugal vapor compressor impeller puller according to claim 1, wherein: The end of the threaded rod provided with the threaded rod sleeve is provided with a tool matching surface, the tool matching surface is used to be matched with a tool for screwing the threaded rod.

3. A centrifugal vapor compressor impeller puller according to claim 1, wherein: A row of hanging holes is longitudinally arranged on the hanging plate.

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