Compressor rotor hoisting guide device

Abstract

The utility model discloses a compressor rotor hoisting guide device, and belongs to the technical field of compressors. The problem that the compressor rotor assembly is prone to being damaged in the hoisting process is solved. The guide device specifically comprises two sub-guide devices with the same structure, the two sub-guiding devices are symmetrically arranged on the two sides of the compressor rotor assembly; the sub-guide device comprises an L-shaped mounting plate, and one side of the L-shaped mounting plate is mounted on a lower shell of the compressor; the other side of the L-shaped mounting plate is connected with two roller mounting pieces; the two opposite side faces of the two rolling wheel installation pieces are each rotationally connected with a set of guide wheels. The two sets of guide wheels are clamped on the two sides of a thrust disc of the compressor rotor assembly respectively. According to the utility model, the thrust disc is limited between the two groups of guide wheels during hoisting, so that the whole compressor rotor assembly vertically descends to the lower shell of the compressor, and the damage to rotor blades, sealing tooth sheets, stator blades, sealing bodies and the like caused by collision due to swinging during installation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a compressor rotor hoisting guide device. Background Art

[0002] Speed ​​compressors are also called turbine compressors. The meaning of speed compressors is that their working principle is to rely on the blades to work on the gas, greatly increase the flow rate of the gas, and then convert the kinetic energy into pressure energy. The compressor is a key equipment for air supply in the fields of blast furnace blast, catalytic cracking unit, blast furnace gas combustion combined cycle power generation unit, etc. It has high working efficiency, wide range of working condition adjustment, high sensitivity, safe and reliable operation, and long service life.

[0003] The compressor rotor assembly currently in use is hoisted many times during installation, unit commissioning, and unit maintenance. During conventional hoisting, the installer relies entirely on the naked eye to observe its position, so it is impossible to avoid bumps during hoisting. In addition, the lighting environment in the workshop is poor, which can easily cause irreversible damage to the compressor rotor, rotor blades, stator blades, sealing gears and other components, and may even cause the equipment to be unable to operate safely. In actual operations, the compressor installation, unit commissioning, and unit maintenance period are short, so the maintenance workload is large, which also causes a waste of manpower and material resources. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a compressor rotor hoisting guide device, which solves the problem that the compressor rotor assembly is easily damaged during the hoisting process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A compressor rotor lifting guide device comprises two sub-guide devices with the same structure; the two sub-guide devices are symmetrically arranged on both sides of a compressor rotor assembly; the sub-guide device comprises an L-shaped mounting plate, one side of the L-shaped mounting plate is mounted on a lower casing of the compressor; the other side of the L-shaped mounting plate is connected to two roller mounting parts; a group of guide wheels are rotatably connected to each of the two opposite side surfaces of the two roller mounting parts; the two groups of guide wheels are respectively clamped on both sides of a thrust plate of the compressor rotor assembly.

[0007] In this solution, two sub-guide devices are arranged on both sides of the compressor rotor assembly to limit it and prevent it from swaying left and right during lifting; during lifting, the thrust plate is clamped between the two sets of guide wheels to ensure that the thrust plate and the compressor rotor assembly as a whole are vertically lowered to the lower casing of the compressor during lifting, effectively preventing damage to the rotor assembly; and the use of this lifting guide device can realize the rapid and safe lifting of the compressor rotor assembly, thereby improving work efficiency.

[0008] Furthermore, a T-shaped guide plate is installed on the side of the L-shaped mounting plate where the two roller mounting members are installed, and the T-shaped guide plate is installed between the two roller mounting members.

[0009] In this solution, when the compressor rotor assembly is hoisted, the T-shaped guide plate can play a good guiding role and further limit the thrust plate, so that the rotor assembly can be hoisted more accurately.

[0010] Furthermore, a gap distance between an end of the T-shaped guide plate away from the L-shaped mounting plate and an outer edge of the thrust plate is 0.2 mm to 0.3 mm.

[0011] Furthermore, two mutually parallel fixed plates are vertically connected to the roller mounting member, a rotating shaft is movably connected between the two fixed plates, and the guide wheel is arranged on the rotating shaft.

[0012] Furthermore, a strip hole is provided on the side of the L-shaped mounting plate connected to the lower casing of the compressor, screws are arranged in the strip hole, and the L-shaped mounting plate is mounted on the lower casing of the compressor by means of the screws.

[0013] In this solution, a strip hole is set on the L-shaped mounting plate. When installing the L-shaped mounting plate, insert a screw into the strip hole but do not tighten it. Move the L-shaped mounting plate along the length direction of the strip hole to adjust the distance between the T-shaped guide plate and the rotor assembly. After adjustment, tighten the screw.

[0014] Furthermore, in each group of guide wheels, the wheel body edge of a guide wheel which is farthest from the lower casing of the compressor exceeds the edge of the fixing plate.

[0015] In this solution, during the descending process of the thrust plate of the rotor assembly during the lifting work, its bottom first contacts the edge of the wheel body of the guide wheel, and under the guidance of the guide wheel, the thrust plate enters between the two sets of guide wheels; this design can prevent the thrust plate from first contacting the fixed plate during the descent, causing damage to the thrust plate.

[0016] Furthermore, each group of guide wheels has four guide wheels, and the four guide wheels are equidistantly distributed between the two fixed plates.

[0017] Furthermore, a reinforcing rib plate with a triangular structure is connected to the side of the L-shaped mounting plate.

[0018] In this solution, a reinforcing rib plate is designed to enhance the mechanical strength of the L-shaped mounting plate.

[0019] Furthermore, the T-shaped guide plate is connected to the L-shaped mounting plate by bolts.

[0020] The beneficial effects of the utility model are:

[0021] In the compressor rotor hoisting guide device provided by the utility model, two sub-guide devices are symmetrically arranged on both sides of the compressor rotor assembly; and the thrust plate is limited by two sets of guide wheels that clamp the thrust plate, so that the compressor rotor assembly is accurately guided and installed, avoiding bumps caused by swinging during installation, thereby causing damage to the rotor blades, sealing teeth, stator blades and sealing bodies, etc.; greatly reducing the probability of damage caused by the hoisting process. In addition, the use of the compressor rotor hoisting guide device can increase the hoisting speed of the compressor rotor assembly, thereby improving the work efficiency of the compressor unit commissioning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a top view of a compressor rotor hoisting guide device of the utility model being assembled on a lower casing of a compressor;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the sub-guiding device of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of the sub-guiding device of the utility model from a top view;

[0025] Figure 4 It is a front structural schematic diagram of the sub-guiding device of the present utility model.

[0026] Reference numerals:

[0027] 1. L-shaped mounting plate; 11. Reinforcement rib plate; 12. Strip hole; 2. Roller mounting piece; 3. Guide wheel; 4. T-shaped guide plate; 5. Lower housing; 6. Rotor assembly; 7. Thrust plate; 8. Fixing plate; DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. The specific implementation of the utility model is described below to facilitate the understanding of the utility model by those skilled in the art, but it should be clear that the utility model is not limited to the scope of the specific implementation. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all inventions and creations conceived using the utility model are protected.

[0029] like Figure 1 As shown, this embodiment provides a compressor rotor hoisting guide device, which is used to limit and guide the rotor assembly of the compressor when hoisting it, so as to avoid irreversible damage to the rotor blades, stator blades, sealing teeth and other components when hoisting the rotor assembly during the unit commissioning or unit maintenance process; it can also realize the rapid hoisting of the rotor assembly; it specifically includes:

[0030] Two sub-guide devices with the same structure; the two sub-guide devices are installed on the middle dividing plane of the compressor lower casing 5, and the sub-guide devices are symmetrically arranged on both sides of the compressor rotor assembly 6.

[0031] like Figure 2 As shown, the sub-guiding device includes an L-shaped mounting plate 1, a roller mounting member 2, a guide wheel 3 and a T-shaped guide plate 4;

[0032] Among them, one side of the L-shaped mounting plate 1 is installed on the lower casing 5 of the compressor; two roller mounting parts 2 are connected to the other side of the L-shaped mounting plate 1; a group of guide wheels 3 are rotatably connected to the two opposite side surfaces of the two roller mounting parts 2; the two groups of guide wheels 3 are respectively clamped on both sides of the thrust plate 7 of the compressor rotor assembly 6, to ensure that the thrust plate 7 and the compressor rotor assembly 6 as a whole can only be vertically lowered to the lower casing 5 of the compressor during lifting, effectively preventing damage to the rotor assembly 6; the L-shaped mounting plate 1 is also installed with a T-shaped guide plate 4 on the side where the two roller mounting parts 2 are installed, and the T-shaped guide plate 4 is installed between the two roller mounting parts 2, to further limit the thrust plate 7, so that the rotor assembly 6 can be lifted more accurately.

[0033] The gap distance between the end of the T-shaped guide plate 4 away from the L-shaped mounting plate 1 and the outer edge of the thrust plate 7 is 0.2 mm to 0.3 mm.

[0034] Two mutually parallel fixed plates 8 are vertically connected to the roller mounting part 2, and a rotating shaft is movably connected between the two fixed plates 8, and the guide wheel 3 is arranged on the rotating shaft; in each group of guide wheels 3, the wheel body edge of the guide wheel 3 farthest from the lower casing 5 exceeds the edge of the fixed plate 8; during the descending process of the thrust plate 7 of the rotor assembly 6 during the lifting work, the bottom of the thrust plate 7 first contacts the wheel body edge of the guide wheel 3, and under the guidance of the wheel body edge of the guide wheel 3, the thrust plate 7 enters between the two groups of guide wheels 3; this design can prevent the thrust plate 7 from first contacting the fixed plate 8 during the descent, thereby causing damage to the thrust plate 7.

[0035] The number of guide wheels 3 in each group is four, and the four guide wheels 3 are equidistantly distributed between the two fixing plates 8 .

[0036] like Figure 3 As shown, a strip hole 12 is provided on the side of the L-shaped mounting plate 1 connected to the lower casing 5 of the compressor, and a screw is provided in the strip hole 12. The L-shaped mounting plate 1 is mounted on the lower casing 5 of the compressor by means of the screw. When installing the L-shaped mounting plate 1, the screw is inserted into the strip hole 12 but not tightened. The L-shaped mounting plate 1 is moved along the length direction of the strip hole 12 to adjust the distance between the T-shaped guide plate 4 and the rotor assembly 6. After adjustment, the screw can be tightened. The L-shaped mounting plate 1 is mounted on the center plane of the lower casing 5 using screws. The threaded holes thereon can be directly used without the need to drill holes again. The threaded holes of the lower casing 5 can be used to achieve non-destructive and quick installation.

[0037] like Figure 4 As shown, a side surface of the L-shaped mounting plate 1 is also connected to a reinforcing rib plate 11 with a triangular structure, and the reinforcing rib plate can strengthen the mechanical strength of the L-shaped mounting plate 1 .

[0038] The T-shaped guide plate 4 is connected to the L-shaped mounting plate 1 by bolts.

[0039] The working principle of this embodiment is:

[0040] When the compressor rotor lifting guide device provided in this embodiment is used, first place the two sub-guide devices symmetrically on the center dividing surface of the lower casing 5, then put the screws into the strip holes 12 of the L-shaped mounting plate 1, and do not tighten the screws temporarily; adjust the relative positions of the L-shaped mounting plates 1 and the thrust plates 7 on the left and right sides so that the distance between the T-shaped guide plate 4 and the installation position of the thrust plate 7 is maintained between 0.2mm and 0.3mm, and then tighten the screws; after the installation is completed, carry out the lifting.

[0041] Lift the rotor assembly 6 of the compressor to the top of the lower casing 5 and slowly drop it so that the thrust plate 7 of the rotor assembly 6 is confined between the two sets of guide wheels 3 to avoid collision and damage to the rotor assembly 6 during lifting; continue to drop to complete the lifting.

[0042] Those skilled in the art will appreciate that the embodiments herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations based on the technical inspiration disclosed in the present invention without departing from the essence of the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A compressor rotor hoisting guide device, characterized in that: It comprises two sub-guide devices with the same structure; the two sub-guide devices are symmetrically arranged on both sides of the compressor rotor assembly (6); The sub-guide device comprises an L-shaped mounting plate (1), one side of the L-shaped mounting plate (1) being mounted on a lower casing (5) of the compressor; the other side of the L-shaped mounting plate (1) being connected to two roller mounting members (2); a group of guide wheels (3) being rotatably connected to two opposite side surfaces of the two roller mounting members (2); and the two groups of guide wheels (3) being respectively clamped on two sides of a thrust plate (7) of a compressor rotor assembly (6).

2. The compressor rotor hoisting and guiding device according to claim 1, characterized in that: The L-shaped mounting plate (1) is also provided with a T-shaped guide plate (4) on the side where the two roller mounting members (2) are mounted, and the T-shaped guide plate (4) is mounted between the two roller mounting members (2).

3. The compressor rotor hoisting and guiding device according to claim 2, characterized in that: The gap distance between the end of the T-shaped guide plate (4) away from the L-shaped mounting plate (1) and the outer edge of the thrust plate (7) is 0.2 mm to 0.3 mm.

4. The compressor rotor hoisting and guiding device according to claim 2, characterized in that: Two mutually parallel fixing plates (8) are vertically connected to the roller mounting member (2), a rotating shaft is movably connected between the two fixing plates (8), and the guide wheel (3) is arranged on the rotating shaft.

5. The compressor rotor hoisting guide device according to claim 4, characterized in that: A strip hole (12) is provided on the side of the L-shaped mounting plate (1) connected to the lower casing (5) of the compressor, and screws are arranged in the strip hole (12). The L-shaped mounting plate (1) is mounted on the lower casing (5) of the compressor by means of the screws.

6. The compressor rotor hoisting guide device according to claim 4, characterized in that: In each group of guide wheels (3), the wheel body edge of a guide wheel that is farthest from the lower casing (5) of the compressor exceeds the edge of the fixing plate (8).

7. The compressor rotor hoisting and guiding device according to claim 4, characterized in that: The number of guide wheels (3) in each group is four, and the four guide wheels (3) are equidistantly distributed between the two fixing plates (8).

8. The compressor rotor hoisting and guiding device according to claim 4, characterized in that: A reinforcing rib plate (11) with a triangular structure is also connected to the side surface of the L-shaped mounting plate (1).

9. The compressor rotor hoisting and guiding device according to claim 4, characterized in that: The T-shaped guide plate (4) is connected to the L-shaped mounting plate (1) via bolts.

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