CN216490153U

CN216490153U - Centrifugal compressor rotor assembly fixture

Info

Publication number: CN216490153U
Application number: CN202122174765.5U
Authority: CN
Inventors: 施陈莲; 吴立华; 董继勇
Original assignee: Nanjing Cigu Technology Co Ltd
Current assignee: Nanjing Cigu Technology Co Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-05-10
Anticipated expiration: 2031-09-09

Abstract

The utility model discloses a centrifugal compressor rotor assembly tool, which is assembled by means of a gantry crane, wherein the compressor comprises a shell, a rotor and a stator, the stator is fixed in the middle of the inner wall of the shell, the rotor assembly tool comprises a frame, and a first tool and a second tool which are used for concentrically arranging the rotor and the stator, the first tool is used for fixing the rotor, the second tool is used for ensuring the concentric installation of the rotor and the stator, the shell is placed on the frame by the gantry crane, a bolt and a nut which are used for fixing the shell are arranged on the frame, the first tool is lifted by the gantry crane and is placed in the shell, the lower end of the rotor is in threaded connection with a guide rod which is used for assembly and guidance, the guide rod and the rotor are concentrically arranged, a positioning bolt which is used for assisting the positioning of the first tool is arranged on the shell, the structure is simple, the manufacturing cost is low, the operation of the whole rotor assembly process is simple, a large amount of working hours is saved, and the same also can use of rotor overall dimension of different model air compressors.

Description

Centrifugal compressor rotor assembly fixture

Technical Field

The utility model relates to the technical field of rotor assembly, in particular to a centrifugal compressor rotor assembly tool.

Background

In the process of assembling the rotor by the prototype, the rotor is heavier, the assembly needs to be carried out by manpower, time and labor are wasted, and the operation process is difficult, so that the assembly needs to be completed by certain tools. The traditional method is that two persons push the rotor by exerting force on one side to prevent the rotor from being sucked to death with the stator due to magnetic force, and the other person pushes against the other side to limit the position of the rotor. In the traditional method, because the rotor is magnetic and has larger magnetic force, the rotor and the stator iron core are easy to be combined together, and because the rotor is very heavy, the inertia is large in the process of hot-assembling the rotor, a motor is easy to operate to knock or smash an operator, the whole assembly process needs several manpower, so that a lot of working hours are consumed, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The technical purpose is as follows: aiming at the defects of low assembling efficiency and insecurity of the existing rotor, the utility model discloses a rotor assembling tool of a centrifugal compressor, which is safe and high in assembling efficiency.

The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a centrifugal compressor rotor assembly fixture, assembles with the help of navigation hangs, the compressor includes casing, rotor and stator, and casing inner wall middle part is fixed with the stator, rotor assembly fixture includes the frame, still including first frock and the second frock that is used for the concentric setting of rotor and stator, first frock is used for fixed rotor, and the second frock is used for guaranteeing the concentric installation of rotor and stator, and the casing is hung through navigation and is placed in the frame, and is equipped with the screw bolt and the nut that are used for fixed casing in the frame, and first frock is hung and is put into the casing through navigation, and rotor lower extreme threaded connection has the guide bar that is used for the assembly direction, and guide bar and the concentric setting of rotor, is equipped with the positioning bolt who assists first frock location on the casing.

Preferably, the compressor further comprises a first bearing seat and a first magnetic bearing, the first tool comprises a hoisting rotor tool and a first circular ring, the rotor penetrates through the first bearing seat and enters the hoisting rotor tool, the rotor is connected with the hoisting rotor tool through a bolt, the hoisting rotor tool is fixed with the first bearing seat through a bolt and a nut, a first cavity for accommodating the upper part of the rotor is formed, the bottom of the first cavity is abutted to the first magnetic bearing for assisting the rotor to rotate, the rotor and the first magnetic bearing are concentrically arranged, and the first magnetic bearing is abutted to the first circular ring convenient to assemble and disassemble.

Preferably, the compressor further comprises a second bearing seat and a second magnetic bearing, the second tool comprises a second ring, the second bearing seat is arranged at the lower part of the casing, the shell and the second bearing seat are fixed through bolts and nuts, the second bearing seat and the frame are fixed through bolts and nuts, a second cavity for accommodating the lower part of the rotor is formed between the second bearing seat and the frame, the top in the second cavity is abutted against a second magnetic bearing for assisting the rotor to rotate, and the rotor and a second magnetic bearing are concentrically arranged, a second ring convenient for assembly and disassembly of the assembly tool is abutted under the second magnetic bearing, a magnetic bearing pressing plate for assisting in assembly of the rotor is abutted under the second ring, an annular guide block for limiting the descending position of the rotor is fixedly arranged on the magnetic bearing pressing plate, a guide hole matched with the guide rod and the rotor is formed in the middle of the guide block, and the magnetic bearing pressing plate and a second bearing seat are fixed through bolts and nuts.

Preferably, a stainless steel bolt is arranged between the first bearing seat and the casing, and the stainless steel bolt replaces a positioning bolt to fix the first bearing seat and the casing after assembly is completed.

Preferably, the mass of the housing, frame and stator is greater than the magnetic attraction between the rotor and stator.

Has the advantages that:

1. the parts such as the rotor are assembled well and vertically placed on one side to wait for assembly, the shell and the stator part are hoisted by a crane and are placed on the rack and fixed well by nuts and bolts, the positioning bolts can determine the wire outlet direction of the guide rod, then the parts such as the rotor are hoisted and placed in the shell, the operation is flexible and reliable, and the safety is high.

2. The rotor has strong magnetic field and may attract the casing, so that the mass of the casing, the frame and other parts is greater than that of the rotor to avoid the rotor with great magnetic force and the stator being attracted together.

3. The rotor assembly tool comprises a frame, and further comprises a first tool and a second tool which are used for the concentric arrangement of a rotor and a stator, the first tool is used for fixing the rotor, the second tool is used for ensuring the concentric installation of the rotor and the stator, the tool is convenient for the rotor assembly, the structure is simple, the manufacturing cost is low, the operation of the whole rotor assembly process is simple, a large amount of working hours are saved, and the rotor external dimensions of air compressors of different models are the same and can also be used.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a cross-sectional view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of a first tooling of the present invention;

FIG. 3 is a cross-sectional view of a second tooling of the present invention;

FIG. 4 is a cross-sectional view of the completed transfer of the present invention;

the device comprises a rotor hoisting tool 1, a first ring 2, a positioning bolt 3, a stator 4, a second ring 5, a magnetic bearing pressure plate 6, a guide rod 7, a frame 8, a guide block 9, a casing 10, a rotor 11, a first bearing seat 12, a stainless steel bolt 13, a second bearing seat 14, a first magnetic bearing 15 and a second magnetic bearing 16.

Detailed Description

The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, without thereby limiting the scope of the utility model to the described embodiment.

As shown in figure 1, the centrifugal compressor rotor assembly tool is assembled by means of a gantry crane, the compressor comprises a casing 10, a rotor 11 and a stator 4, the stator 4 is fixed in the middle of the inner wall of the casing 10, and the centrifugal compressor rotor assembly tool is characterized by comprising a rack 8, a first tool and a second tool which are used for concentrically arranging the rotor 11 and the stator 4, the first tool is used for fixing the rotor 11, the second tool is used for ensuring the concentric installation of the rotor 11 and the stator 4, the casing 10 is placed on the rack 8 through the gantry crane, a bolt and a nut which are used for fixing the casing 10 are arranged on the rack 8, the first tool is lifted through the gantry crane and placed in the casing 10, a guide rod 7 used for assembly guiding is connected to the lower end of the rotor 11 through threads, the guide rod 7 and the rotor 11 are concentrically arranged, a positioning bolt 3 which is used for assisting the positioning of the first tool is arranged on the casing 10, the positioning bolt 3 can determine the outgoing direction of the guide rod 7, the operation is flexible and reliable, and the operation safety is high.

As shown in fig. 2, the compressor further includes a first bearing seat 12 and a first magnetic bearing 15, the first tool includes a hoisting rotor tool 1 and a first ring 2, the rotor 11 passes through the first bearing seat 12 and enters the hoisting rotor tool 1, and the rotor 11 passes through the bolt connection with the hoisting rotor tool 1, the hoisting rotor tool 1 is fixed with the first bearing seat 12 through the bolt and the nut, and a first cavity for accommodating the upper part of the rotor 11 is formed, the first magnetic bearing 15 for assisting the rotor 11 to rotate in the bottom butt in the first cavity, and the rotor 11 and the first magnetic bearing 15 are concentrically arranged, the first ring 2 for facilitating the assembly tool to disassemble in the butt on the first magnetic bearing 15.

As shown in fig. 3, the compressor further includes a second bearing seat 14 and a second magnetic bearing 16, the second fixture includes a second ring 5, the second bearing seat 14 is disposed at the lower portion of the casing 10, the casing 10 and the second bearing seat 14 are fixed by bolts and nuts, the second bearing seat 14 and the frame 8 are fixed by bolts and nuts, a second cavity for accommodating the lower portion of the rotor 11 is formed between the second bearing seat 14 and the frame 8, the top of the second cavity is abutted against the second magnetic bearing 16 for assisting the rotor 11 to rotate, the rotor 11 and the second magnetic bearing 16 are concentrically disposed, the second ring 5 for facilitating the assembly and disassembly of the fixture is abutted against the lower portion of the second magnetic bearing 16, a magnetic bearing pressure plate 6 for assisting the rotor 11 to assemble is abutted against the lower portion of the second ring 5, an annular guide block 9 for limiting the descending position of the rotor 11 is fixedly disposed on the magnetic bearing pressure plate 6, a guide hole matched with the guide rod 7 and the rotor 11 is formed in the middle portion of the guide block 9, and the magnetic bearing pressure plate 6 and the second bearing housing 14 are fixed by bolts and nuts.

As shown in fig. 4, a stainless steel bolt 13 is arranged between the first bearing seat 12 and the casing 10, the stainless steel bolt 13 replaces the positioning bolt 3 to fix the first bearing seat 12 and the casing 10 after assembly is completed, the mass of the casing 10, the frame 8 and the stator 4 is greater than the magnetic attraction force between the rotor 11 and the stator 4, assembly is completed, all assembly tools are removed, the tool facilitates assembly of the rotor 11, and partial parts can also be used as disassembly tools.

The working principle of the utility model is as follows: firstly, assembling components such as a rotor 11, a rotor hoisting tool 1, a first ring 2 and the like, vertically placing the components on one side for waiting for assembly, hoisting a machine shell 10 and a stator 4 by using a crane, placing the components on a machine frame 8, fixing the components by using nuts and bolts, then installing a positioning bolt 3, hoisting the components such as the rotor 11 and the like, placing the components into the machine shell 10, having flexible and reliable operation and high operation safety, ensuring that the quality of the components such as the machine shell 10 and the machine frame is greater than the suction force of the rotor 11 because the rotor 11 has a strong magnetic field and possibly sucking the machine shell 10, simultaneously determining the positioning bolt 3 as the wire outlet direction of a guide rod 7, determining the wire outlet direction to slowly lower the rotor 11 by means of the positioning bolt 3, placing the rotor 11 to the bottom all the time, fixing the components by using the bolts, taking down the positioning bolt 3, replacing a stainless steel bolt 13 and screwing up, completing the assembly, and removing all the assembly tools, this frock makes things convenient for rotor 11 to assemble, also can regard as the dismantlement frock with the help of partial part, simple structure, low in manufacturing cost and whole rotor 11 assembling process easy operation save a large amount of man-hours, and the rotor 11 overall dimension of different model air compressors is the same also can use moreover.

The above is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims

1. A centrifugal compressor rotor assembly tool is assembled by means of a gantry crane, the compressor comprises a machine shell (10), a rotor (11) and a stator (4), the stator (4) is fixed in the middle of the inner wall of the machine shell (10), the centrifugal compressor rotor assembly tool is characterized by comprising a rack (8), a first tool and a second tool which are used for concentrically arranging the rotor (11) and the stator (4), the first tool is used for fixing the rotor (11), the second tool is used for ensuring the concentric installation of the rotor (11) and the stator (4), the machine shell (10) is placed on the rack (8) through the gantry crane, a bolt and a nut which are used for fixing the machine shell (10) are arranged on the rack (8), the first tool is lifted and placed in the machine shell (10) through the gantry crane, a guide rod (7) used for assembly guiding is connected to the lower end of the rotor (11) through threads, and the guide rod (7) and the rotor (11) are concentrically arranged, and a positioning bolt (3) for assisting the positioning of the first tool is arranged on the machine shell (10).

2. The assembling tool for the rotor of the centrifugal compressor according to claim 1, the compressor also comprises a first bearing seat (12) and a first magnetic bearing (15), the first tool comprises a hoisting rotor tool (1) and a first circular ring (2), the rotor (11) passes through the first bearing seat (12) and enters the rotor hoisting tool (1), the rotor (11) is connected with the rotor hoisting tool (1) through a bolt, the rotor hoisting tool (1) is fixed with the first bearing seat (12) through a bolt and a nut, and a first cavity for accommodating the upper part of the rotor (11) is formed, the bottom in the first cavity is abutted with a first magnetic bearing (15) for assisting the rotor (11) to rotate, and the rotor (11) and the first magnetic bearing (15) are concentrically arranged, and the first magnetic bearing (15) is abutted with the first circular ring (2) which is convenient for the assembly and disassembly of the tool.

3. The centrifugal compressor rotor assembling tool according to claim 1, wherein the compressor further comprises a second bearing seat (14) and a second magnetic bearing (16), the second tool comprises a second ring (5), the second bearing seat (14) is arranged at the lower part of the casing (10), the casing (10) and the second bearing seat (14) are fixed through bolts and nuts, the second bearing seat (14) and the frame (8) are fixed through bolts and nuts, a second cavity for accommodating the lower part of the rotor (11) is formed between the second bearing seat (14) and the frame (8), the top part in the second cavity is abutted against the second magnetic bearing (16) for assisting the rotation of the rotor (11), the rotor (11) and the second magnetic bearing (16) are concentrically arranged, the second ring (5) for facilitating the assembling tool to be disassembled is abutted against the lower part of the second magnetic bearing (16), the magnetic bearing plate (6) for assisting the assembly of the rotor (11) is abutted against the lower part of the second ring (5), an annular guide block (9) for limiting the descending position of the rotor (11) is fixedly arranged on the magnetic bearing pressure plate (6), a guide hole matched with the guide rod (7) and the rotor (11) is formed in the middle of the guide block (9), and the magnetic bearing pressure plate (6) is fixed with the second bearing seat (14) through bolts and nuts.

4. The assembling tooling for the rotor of the centrifugal compressor is characterized in that a stainless steel bolt (13) is arranged between the first bearing seat (12) and the casing (10), and the stainless steel bolt (13) replaces the positioning bolt (3) to fix the first bearing seat (12) and the casing (10) after the assembling is completed.

5. A centrifugal compressor rotor assembly tooling according to claim 3 wherein the mass of the casing (10), frame (8) and stator (4) is greater than the magnetic attraction between the rotor (11) and stator (4).