Centrifugal compressor impeller mounting assembly convenient to disassemble

Abstract

The invention relates to the technical field of impellers, in particular to a centrifugal compressor impeller mounting assembly convenient to disassemble, which comprises a main shaft, an impeller bracket, a mounting cylinder, a movable piston and a limiting block I, a liquid storage groove is formed in the main shaft, a first moving groove is formed in the inner ring face of the liquid storage groove, a moving piston is connected to the inner ring face of the liquid storage groove in a sleeving mode, a conical block is fixedly connected to the side surface of the moving piston, an arc-shaped groove is formed in the side surface of the main shaft, and a communicating groove is formed in the inner wall of the arc-shaped groove. A second moving groove is formed in one side of the communicating groove. According to the centrifugal compressor impeller mounting assembly convenient to disassemble, oil is injected into a liquid storage tank to push a movable piston, a conical block extrudes a movable column to move upwards, a first limiting block enters an arc-shaped groove in a mounting cylinder, then the mounting cylinder is fixed, only oil needs to be injected and discharged, mounting and disassembling of an impeller are completed, and follow-up maintenance and replacement of the impeller are facilitated; maintenance time is reduced, and operation efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of impellers, in particular to a centrifugal compressor impeller mounting assembly convenient to disassemble. BACKGROUND

[0002] A centrifugal compressor is a fluid machine that relies on the centrifugal force generated by the high-speed rotation of an impeller to compress and increase the pressure and kinetic energy of a gas, and is widely used in the fields of petroleum and chemical industry, natural gas transportation, aerospace, refrigeration, etc. It converts the mechanical energy of a prime mover (such as an electric motor or a steam turbine) into pressure energy of a gas through a continuous energy conversion process, and has the characteristics of large flow rate, high efficiency, stable operation, etc.

[0003] Most impellers are installed on the compressor main shaft by welding, and when they need to be replaced, they need to be disassembled from the compressor output shaft, which is not convenient to disassemble and replace. Therefore, a centrifugal compressor impeller mounting assembly convenient to disassemble is proposed. SUMMARY

[0004] The present application aims to provide a centrifugal compressor impeller mounting assembly convenient to disassemble to solve the problem that most impellers are installed on the compressor main shaft by welding and need to be disassembled from the compressor output shaft when they need to be replaced, which is not convenient to disassemble and replace. To achieve the above purpose, the present application provides the following technical scheme: a centrifugal compressor impeller mounting assembly convenient to disassemble, comprising a main shaft, an impeller support, a mounting cylinder, a moving piston and a limiting block one;

[0005] The inside of the main shaft is provided with a liquid storage groove, the inner ring surface of the liquid storage groove is provided with a moving groove one, the inner ring surface of the liquid storage groove is sleeved with a moving piston, the side surface of the moving piston is fixedly connected with a conical block, the side surface of the main shaft is provided with an arc-shaped groove, the inner wall of the arc-shaped groove is provided with a communication groove, one side of the communication groove is provided with a moving groove two, the communication groove is communicated with the moving groove one, the inner wall of the arc-shaped groove is slidably connected with a limiting block one, one side of the limiting block one is fixedly connected with a moving column, the side surface of the moving column is sleeved with an elastic element two;

[0006] One side of the liquid storage groove is provided with a liquid inlet, one side of the liquid storage groove is provided with a liquid outlet hole, one end of the moving piston is fixedly connected with an extension rod two, the side surface of the extension rod two is sleeved with the same elastic element two;

[0007] The mounting cylinder is clamped with the main shaft, an inner annular surface of the mounting cylinder is provided with an arc-shaped groove which is the same as the main shaft, a side surface of the mounting cylinder is fixedly connected with an impeller support, and a side of the impeller support is fixedly provided with a blade.

[0008] Further preferably, a side of the liquid storage groove is provided with a circular groove, an inner annular surface of the circular groove is clamped with a pressing plate, an inner annular surface of the liquid inlet is fixedly connected with a support frame, a side of the support frame is fixedly connected with a first telescopic rod, one end of the first telescopic rod is fixedly connected with the pressing plate, and a side surface of the first telescopic rod is sleeved with a first elastic element, which is convenient for dismounting the centrifugal compressor impeller mounting assembly.

[0009] Further preferably, a side of the liquid inlet is fixedly connected with a liquid inlet pipe, a side of the liquid outlet is fixedly connected with a liquid outlet pipe, one end of the liquid outlet pipe is connected with a one-way valve, a side surface of the liquid inlet pipe is threadedly connected with a sealing cover, and a side surface of the liquid outlet pipe is threadedly connected with the same sealing cover as the liquid inlet pipe.

[0010] Further preferably, a side of the main shaft is provided with a mounting groove, the liquid inlet pipe and the liquid outlet pipe are arranged in the mounting groove, an inner wall of the mounting groove is provided with a key groove, and the mounting groove is clamped with a cover plate through the key groove.

[0011] Further preferably, a side of the cover plate is provided with a placement hole which is the same in size as the sealing cover, the cover plate is clamped with the sealing cover through the placement hole, a screw post penetrates through a side of the cover plate, and the screw post is threadedly connected with the cover plate and the main shaft, which is convenient for dismounting the centrifugal compressor impeller mounting assembly.

[0012] Further preferably, one section of the main shaft is conical, one section of the inner annular surface of the mounting cylinder is conical, the conical sections of the main shaft and the mounting cylinder have the same curvature and are conical surface fitted, the conical surface fitted centrifugal compressor impeller mounting assembly is convenient to disassemble, axial force is more easily transmitted during disassembly, and the connection rigidity can be ensured by controlling the conical surface contact precision.

[0013] Further preferably, the side surface of the main shaft is fixedly connected with a fixed plate, one side of the fixed plate is fixedly connected with an inclined slide rail, the inner wall of the inclined slide rail is clamped with a clamping plate, and one side of the clamping plate is fixedly connected with a limiting block two.

[0014] Further preferably, the clamping plate is fixedly connected with the mounting cylinder, one section of the main shaft is provided with a thread, and one section of the mounting cylinder is threadedly connected with the main shaft, the centrifugal compressor impeller mounting assembly is convenient to disassemble, the mounting cylinder is rotated to be threadedly connected with the one section of the main shaft, at this time, the clamping plate is clamped with the inclined slide rail by rotation, the limiting block two is in abutment with the inclined slide rail, the arc-shaped groove on the main shaft is in coincident communication with the arc-shaped groove on the mounting cylinder, the inclined slide rail is fixed to the mounting cylinder through the clamping plate, the limiting block one can be accurately inserted into the arc-shaped groove, the fixing of the device is completed, the installation efficiency is improved, manual installation operation is facilitated, and the trial and error alignment time is reduced.

[0015] Compared with the prior art, the centrifugal compressor impeller mounting assembly has the following beneficial effects:

[0016] In the centrifugal compressor impeller mounting assembly, the oil liquid is injected into the liquid storage tank to push the moving piston, the conical block extrudes the moving column to move upward, the limiting block one is inserted into the arc-shaped groove on the mounting cylinder, and then the mounting cylinder is fixed, only the oil liquid needs to be injected and discharged, the installation and disassembly of the impeller are completed, subsequent maintenance and replacement of the impeller are facilitated, maintenance time is reduced, and the operation efficiency of the device is improved.

[0017] In the centrifugal compressor impeller mounting assembly, the clamping plate is clamped with the inclined slide rail by rotation, the limiting block two is in abutment with the inclined slide rail, the arc-shaped groove on the main shaft is in coincident communication with the arc-shaped groove on the mounting cylinder, the inclined slide rail is fixed to the mounting cylinder through the clamping plate, the limiting block one can be accurately inserted into the arc-shaped groove, the fixing of the device is completed, the installation efficiency is improved, manual installation operation is facilitated, and the trial and error alignment time is reduced.

[0018] In the centrifugal compressor impeller mounting assembly, the clamping plate is clamped with the inclined slide rail by rotation, the limiting block two is in abutment with the inclined slide rail, the arc-shaped groove on the main shaft is in coincident communication with the arc-shaped groove on the mounting cylinder, the inclined slide rail is fixed to the mounting cylinder through the clamping plate, the limiting block one can be accurately inserted into the arc-shaped groove, the fixing of the device is completed, the installation efficiency is improved, manual installation operation is facilitated, and the trial and error alignment time is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole three-dimensional structure schematic diagram of the centrifugal compressor impeller mounting assembly.

[0020] Figure 2 It is a local sectional structure schematic diagram of the centrifugal compressor impeller mounting assembly. Figure 1 ;

[0021] Figure 3 Amplification structure schematic diagram of A place in the application

[0022] Figure 4 Local structure schematic diagram of the application Figure 1

[0023] Figure 5 Local structure schematic diagram of the application Figure 2

[0024] Figure 6 Local structure schematic diagram of the application Figure 2

[0025] In the figure: 1, main shaft; 2, impeller support; 3, blade; 4, mounting cylinder; 5, fixed plate; 6, liquid storage tank; 7, moving groove one; 8, moving groove two; 9, communication groove; 10, arc groove; 11, liquid inlet; 12, liquid outlet hole; 13, circular groove; 14, pressing plate; 15, support frame; 16, telescopic rod one; 17, elastic element one; 18, moving piston; 19, conical block; 20, moving column; 21, limit block one; 22, telescopic rod two; 23, elastic element two; 24, cover plate; 25, key groove; 26, stud; 27, mounting groove; 28, liquid inlet pipe; 29, liquid outlet pipe; 30, sealing cover; 31, inclined slide rail; 32, clamping plate; 33, limit block two. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0027] Please refer to Figure 1 Figure 6 The present application provides a technical solution: a centrifugal compressor impeller mounting assembly convenient to disassemble, comprising a main shaft 1, an impeller support 2, a mounting cylinder 4, a moving piston 18 and a limit block one 21.

[0028] ​​​​The inner part of the main shaft 1 is provided with a liquid storage groove 6, which is used for injecting oil. The inner ring surface of the liquid storage groove 6 is provided with a moving groove one 7. The liquid storage groove 6 is sleeved with a moving piston 18. The side surface of the moving piston 18 is fixedly connected with a tapered block 19. The moving groove one 7 facilitates the movement of the tapered block 19 and limits the moving piston 18. The side surface of the main shaft 1 is provided with an arc-shaped groove 10. The inner ring surface of the mounting cylinder 4 is provided with the same arc-shaped groove 10 as the main shaft 1. The inner wall of the arc-shaped groove 10 is provided with a communication groove 9. One side of the communication groove 9 is provided with a moving groove two 8. The communication groove 9 is communicated with the moving groove one 7. The moving column 20 moves in the communication groove 9. The inner wall of the arc-shaped groove 10 is slidably connected with a limiting block one 21. The limiting block one 21 slides in the arc-shaped groove 10. One side of the limiting block one 21 is fixedly connected with the moving column 20. One end of the moving column 20 is provided with an inclined surface which is in contact with the tapered surface of the tapered block 19, facilitating the movement of the moving column 20. The side surface of the moving column 20 is sleeved with an elastic element two 23. The elastic element two 23 provides elastic force to the moving column 20, facilitating the restoration and forced movement of the moving column 20. The moving column 20 is forced to extrude the elastic element two 23 to move upward, so that the limiting block one 21 is separated from the arc-shaped groove 10 on the main shaft 1 and enters the arc-shaped groove 10 on the mounting cylinder 4.

[0029] One side of the liquid storage groove 6 is provided with an inlet 11. The liquid storage groove 6 is injected with oil through an inlet pipe 28. One side of the liquid storage groove 6 is provided with a circular groove 13. The inner ring surface of the circular groove 13 is clamped with a pressing plate 14. The pressing plate 14 is used to control the inflow and outflow of oil. The inner ring surface of the inlet 11 is fixedly connected with a support frame 15. One side of the support frame 15 is fixedly connected with an extension rod one 16. One end of the extension rod one 16 is fixedly connected with the pressing plate 14. The side surface of the extension rod one 16 is sleeved with an elastic element one 17. The oil exerts force on the pressing plate 14, stretches the elastic element one 17, and moves the pressing plate 14 away from the circular groove 13. The oil enters the liquid storage groove 6. One side of the liquid storage groove 6 is provided with an outlet hole 12. The outlet hole 12 is used for releasing oil, facilitating the disassembly of the impeller. One end of the moving piston 18 is fixedly connected with an extension rod two 22. The side surface of the extension rod two 22 is sleeved with the same elastic element two 23. The elastic element two 23 pushes the moving piston 18 to move. The tapered block 19 is separated from the moving column 20, so that the limiting block one 21 is separated from the arc-shaped groove 10 on the mounting cylinder 4. One side of the inlet 11 is fixedly communicated with the inlet pipe 28. One side of the outlet hole 12 is fixedly communicated with an outlet pipe 29. One end of the outlet pipe 29 is connected with a one-way valve. The side surface of the inlet pipe 28 is threadedly connected with a sealing cover 30. The side surface of the outlet pipe 29 is threadedly connected with the same sealing cover 30 as the inlet pipe 28. By rotating the sealing cover 30, the outlet pipe 29 is opened to release the oil.

[0030] The mounting cylinder 4 is clamped with the main shaft 1. The side surface of the mounting cylinder 4 is fixedly connected with an impeller support 2. One side of the impeller support 2 is fixedly installed with a blade 3.

[0031] In this embodiment, as shown in Figure 1 , Figure 4 and Figure 5 , one side of the main shaft 1 is provided with a mounting groove 27, the liquid inlet pipe 28 and the liquid outlet pipe 29 are arranged inside the mounting groove 27, the inner wall of the mounting groove 27 is provided with a key groove 25, the mounting groove 27 is clamped with the cover plate 24 through the key groove 25, the cover plate 24 is clamped with the mounting groove 27 through the key groove 25, one side of the cover plate 24 is provided with a placement hole with the same size as the sealing cover 30, the cover plate 24 is clamped with the sealing cover 30 through the placement hole, the cover plate 24 is clamped with the sealing cover 30, which protects the sealing cover 30 and reduces the rotation or damage of the sealing cover 30 caused by external factors when the impeller rotates, and a stud 26 penetrates one side of the cover plate 24, the stud 26 is threadedly connected with the cover plate 24 and the main shaft 1, and the cover plate 24 is further fixed through the stud 26.

[0032] In this embodiment, as shown in Figure 1 , Figure 2 and Figure 6 , one side of the main shaft 1 is provided with a mounting groove 27, the liquid inlet pipe 28 and the liquid outlet pipe 29 are arranged inside the mounting groove 27, the inner wall of the mounting groove 27 is provided with a key groove 25, the mounting groove 27 is clamped with the cover plate 24 through the key groove 25, the cover plate 24 is clamped with the mounting groove 27 through the key groove 25, one side of the cover plate 24 is provided with a placement hole with the same size as the sealing cover 30, the cover plate 24 is clamped with the sealing cover 30 through the placement hole, the cover plate 24 is clamped with the sealing cover 30, which protects the sealing cover 30 and reduces the rotation or damage of the sealing cover 30 caused by external factors when the impeller rotates, and a stud 26 penetrates one side of the cover plate 24, the stud 26 is threadedly connected with the cover plate 24 and the main shaft 1, and the cover plate 24 is further fixed through the stud 26.

[0033] The use method and advantages of the present application are as follows:

[0034] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, when the impeller is installed, the impeller support 2 is sleeved into the main shaft 1 through the mounting cylinder 4, the clamping plate 32 is not in the same vertical direction with the inclined slide rail 31 at the initial position of the mounting cylinder 4 sleeved into the main shaft 1, the mounting cylinder 4 is rotated to be threadedly connected with the main shaft 1, at this time the clamping plate 32 is clamped with the inclined slide rail 31 through rotation, when the limiting block two 33 is attached to the inclined slide rail 31, the thread connection of the mounting cylinder 4 with the main shaft 1 is completed, the arc-shaped groove 10 is matched with, at this time the sealing cover 30 is opened, the hydraulic oil injector injects oil into the liquid storage groove 6 through the liquid inlet pipe 28, the oil enters the liquid inlet 11, the oil exerts force on the pressing plate 14, stretches the elastic element one 17, moves the pressing plate 14, and the pressing plate 14 is separated from the circular groove 13, the oil enters the liquid storage groove 6, the continuously entering oil pushes the moving piston 18 to move, the tapered block 19 moves, the tapered block 19 extrudes the moving column 20 to move upward, the moving column 20 is extruded to move upward under force, and then the limiting block one 21 is separated from the arc-shaped groove 10 on the main shaft 1 and enters the arc-shaped groove 10 on the mounting cylinder 4, thereby fixing the mounting cylinder 4, when the moving piston 18 moves to the maximum distance, the fixing is completed, at this time the oil injection is completed, the sealing cover 30 is tightened, the cover plate 24 is clamped with the mounting groove 27 through the key groove 25 and clamped with the sealing cover 30, thereby protecting the sealing cover 30 and reducing the rotation or damage of the sealing cover 30 caused by external influences when the impeller rotates, so that the oil leaks and the mounting cylinder 4 is separated, the cover plate 24 is further fixed through the stud 26, when the impeller needs to be disassembled, the cover plate 24 is removed, the sealing cover 30 is rotated to open the liquid outlet pipe 29, the oil is released, the elastic element two 23 pushes the moving piston 18 to move, the tapered block 19 is separated from the moving column 20, the limiting block one 21 is separated from the arc-shaped groove 10 on the mounting cylinder 4, the clamping plate 32 is separated from the inclined slide rail 31 by rotating the mounting cylinder 4, and the mounting cylinder 4 is moved, thereby completing the disassembly of the impeller, the device injects oil into the liquid storage groove 6 to push the moving piston 18, extrudes the moving column 20 upward by the tapered block 19, and makes the limiting block one 21 enter the arc-shaped groove 10 on the mounting cylinder 4, thereby fixing the mounting cylinder 4, only oil injection is needed to complete the installation and disassembly of the impeller, the subsequent maintenance and replacement of the impeller are facilitated, the maintenance time is reduced, and the operation efficiency of the device is improved.

[0035] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application, various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A centrifugal compressor impeller mounting assembly that is easy to disassemble, characterized in that, It includes a main shaft (1), an impeller support (2), a mounting cylinder (4), a moving piston (18), and a limiting block (21); The main shaft (1) has a liquid storage tank (6) inside. The inner ring surface of the liquid storage tank (6) has a moving groove (7). The inner ring surface of the liquid storage tank (6) is fitted with a moving piston (18). The side surface of the moving piston (18) is fixedly connected with a conical block (19). The side surface of the main shaft (1) has an arc groove (10). The inner wall of the arc groove (10) has a connecting groove (9). The side of the connecting groove (9) has a moving groove (8). The connecting groove (9) is connected to the moving groove (7). The inner wall of the arc groove (10) is slidably connected with a limiting block (21). The side of the limiting block (21) is fixedly connected with a moving column (20). The side surface of the moving column (20) is fitted with an elastic element (23). The liquid storage tank (6) has an inlet (11) on one side and an outlet (12) on one side. One end of the moving piston (18) is fixedly connected to a telescopic rod (22), and the side surface of the telescopic rod (22) is fitted with the same elastic element (23). The mounting cylinder (4) is snapped into the main shaft (1). The inner ring surface of the mounting cylinder (4) is provided with an arc groove (10) identical to that of the main shaft (1). An impeller bracket (2) is fixedly connected to the side surface of the mounting cylinder (4). A blade (3) is fixedly installed on one side of the impeller bracket (2).

2. The centrifugal compressor impeller mounting assembly for easy disassembly according to claim 1, characterized in that: A circular groove (13) is provided on one side of the liquid storage tank (6). A pressure plate (14) is engaged with the inner ring surface of the circular groove (13). A support frame (15) is fixedly connected to the inner ring surface of the liquid inlet (11). A telescopic rod (16) is fixedly connected to one side of the support frame (15). One end of the telescopic rod (16) is fixedly connected to the pressure plate (14). An elastic element (17) is sleeved on the side surface of the telescopic rod (16).

3. The centrifugal compressor impeller mounting assembly for easy disassembly according to claim 1, characterized in that: One side of the inlet (11) is fixedly connected to an inlet pipe (28), and one side of the outlet (12) is fixedly connected to an outlet pipe (29). One end of the outlet pipe (29) is connected to a one-way valve. A sealing cap (30) is threadedly connected to the side surface of the inlet pipe (28), and the same sealing cap (30) as the inlet pipe (28) is threadedly connected to the side surface of the outlet pipe (29).

4. The centrifugal compressor impeller mounting assembly for easy disassembly according to claim 3, characterized in that: A mounting groove (27) is provided on one side of the main shaft (1). The liquid inlet pipe (28) and the liquid outlet pipe (29) are located inside the mounting groove (27). A keyway (25) is provided on the inner wall of the mounting groove (27). A cover plate (24) is snapped onto the inner wall of the mounting groove (27) through the keyway (25).

5. The centrifugal compressor impeller mounting assembly for easy disassembly according to claim 4, characterized in that: The cover plate (24) has a placement hole of the same size as the sealing cover (30) on one side. The cover plate (24) is snapped into the sealing cover (30) through the placement hole. A stud (26) passes through one side of the cover plate (24). The stud (26) is threadedly connected to the cover plate (24) and the main shaft (1).

6. The centrifugal compressor impeller mounting assembly for easy disassembly according to claim 1, characterized in that: One section of the main shaft (1) is tapered, and the inner ring surface of one section of the mounting cylinder (4) is tapered. The tapered part of the main shaft (1) and the tapered part of the mounting cylinder (4) have the same curvature and their tapered surfaces are matched.

7. The centrifugal compressor impeller mounting assembly for easy disassembly according to claim 6, characterized in that: A fixing plate (5) is fixedly connected to the side surface of the main shaft (1). An inclined slide rail (31) is fixedly connected to one side of the fixing plate (5). A snap-fit ​​plate (32) is snapped into the inner wall of the inclined slide rail (31). A limit block two (33) is fixedly connected to one side of the snap-fit ​​plate (32).

8. The centrifugal compressor impeller mounting assembly for easy disassembly according to claim 7, characterized in that: The snap-fit ​​plate (32) is fixedly connected to the mounting cylinder (4), and one end of the main shaft (1) is threaded, and one end of the mounting cylinder (4) is threadedly connected to the main shaft (1).

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