Horizontal disassembly and assembly tool for helium compressor

Abstract

The utility model discloses a horizontal disassembly and assembly tool for a helium compressor, and belongs to the technical field of helium compressors. The problem that in the prior art, a vertical hoisting method for a helium compressor rotor is not suitable for hoisting the rotor and an inner machine shell when the helium compressor is overhauled on a working site is solved. The device specifically comprises a fixed bracket, a guide bracket, a support and a height bracket, one side of the fixed bracket is mounted on an inner shell of the helium compressor; the other side of the fixed bracket is connected with the guide bracket; a support is arranged at the bottom of the guide support and fixed to an outer machine shell of the helium compressor. According to the utility model, the guide bracket drives the fixed bracket, the inner casing and the rotor to slide out of the outer casing until the inner casing is supported on the support, so that the horizontal disassembly of the inner casing and the rotor is realized; the horizontal disassembly and assembly mode is convenient to disassemble, and is suitable for directly disassembling the inner shell and the rotor for maintenance on a working site; and the time cost, the labor cost and the space cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of helium compressor technology, and in particular to a horizontal disassembly and assembly tool for a helium compressor. Background Art

[0002] In the field of compressor technology, especially in the nuclear power industry, high-pressure compressors mostly employ cylindrical centrifugal compressors. The cylindrical outer casing and end caps form the pressure-bearing boundary, while the inner casing and rotor are assembled as a whole and installed inside the outer casing. Helium compressors are used in nuclear reaction engineering to provide pneumatic transport, and the working medium requires that grease-containing bearings not be used. Therefore, electromagnetic bearings are often used for rotor support. However, the electromagnetic bearings cannot provide support before they are operational. Therefore, the rotor and inner casing are generally assembled horizontally and then fixed with special tools. The fixed rotor and inner casing assembly is then vertically placed into the outer casing, and finally the outer casing is laid flat. This vertical assembly method is relatively convenient.

[0003] While the existing vertical assembly method is convenient and easy to operate before leaving the factory, it is not suitable for on-site maintenance of helium compressors. Helium compressors operate horizontally on-site and are connected to other subsystems such as piping and control systems. Therefore, placing the outer casing vertically involves numerous issues such as piping disassembly and assembly, electrical wiring, space allowance, and hoisting height. Thus, vertical placement of helium compressors on-site is inconvenient. Therefore, providing a tooling and method for disassembling, assembling, inspecting, and maintaining the rotor and inner casing of a helium compressor in a horizontal position is a key issue in the later maintenance process of helium compressors and urgently needs to be addressed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a horizontal disassembly and assembly fixture for helium compressors, solving the problem that the existing vertical hoisting method for helium compressor rotors is not suitable for hoisting the rotor and inner casing when overhauling helium compressors at the work site.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A horizontal assembly / disassembly fixture for a helium compressor includes a fixed bracket, a guide bracket, a support, and a height bracket; one side of the fixed bracket is mounted on the inner casing of the helium compressor; the other side of the fixed bracket is connected to the guide bracket; the bottom of the guide bracket is provided with a support, which is fixed to the outer casing of the helium compressor.

[0007] In this solution, a fixed bracket is installed on the inner casing of the helium compressor. A guide bracket drives the fixed bracket, along with the inner casing and rotor of the helium compressor, to slide out of the outer casing until the inner casing of the helium compressor is supported on the support, thus achieving horizontal disassembly of the inner casing and rotor. This horizontal disassembly method is convenient and suitable for direct disassembly of the inner casing and rotor for maintenance at the helium compressor's work site. Furthermore, the tooling structure is simple, easy to process, and convenient to install, greatly saving time, labor, and space costs.

[0008] Furthermore, the guide bracket includes a housing guide rod, one end of which is connected to a threaded hole at the end of the outer housing; the other end of the housing guide rod passes through an adapter plate, and a disassembly nut and an installation nut are screwed onto the end of the housing guide rod connected to the adapter plate, with the disassembly nut and installation nut respectively located on both sides of the adapter plate; a bracket guide rod passes through the adapter plate; the bracket guide rod is connected to the adapter plate by two fixing nuts respectively located on both sides of the adapter plate; the other end of the bracket guide rod is connected to a fixed bracket.

[0009] In this design, the bracket guide rod connects the adapter plate and the fixed bracket together via a fixing nut. Rotating the disassembly nut moves it along the housing guide rod away from the outer housing, thus pushing the adapter plate in the same direction. During this movement, the adapter plate pulls the bracket guide rod away from the outer housing, and the bracket guide rod drives the fixed bracket and inner housing to move synchronously, thereby pulling the inner housing and rotor out of the outer housing, completing the disassembly process. After maintenance, when installing the inner housing and rotor, rotating the installation nut moves it along the housing guide rod towards the outer housing. During this movement, the adapter plate pushes the bracket guide rod towards the outer housing, and the bracket guide rod drives the fixed bracket and inner housing to move synchronously, thereby pushing the inner housing and rotor into the outer housing, completing the installation of the rotor and inner housing. This design, using the rotation of the disassembly nut and installation nut to move the inner housing, is simple and convenient to operate.

[0010] Furthermore, the fixed bracket includes a connecting plate with threaded holes. The connecting plate is installed in the threaded holes on the end face of the inner casing by bolts passing through the threaded holes. A threaded cylinder is fixed on the side of the connecting plate away from the inner casing, and the bracket guide rod is connected in the threaded cylinder.

[0011] In this solution, the connecting plate can evenly distribute the tensile or thrust provided by the bracket guide rod and apply it to the inner casing, thus avoiding excessive force exerted by the bracket guide rod on a localized area of ​​the inner casing, which could damage the inner casing.

[0012] Furthermore, the connecting plate includes two semicircular plates, and two flange rings are fixed on the same side of the two semicircular plates respectively; the two semicircular plates are connected by bolts passing through the two flange rings.

[0013] Furthermore, the support includes a base plate, with a flange plate vertically connected to one side of the base plate; the support is installed in the bolt holes on the end face of the outer casing by bolts passing through the flange plate; two support plates are connected to the base plate, with the tops of the two support plates inclined toward the center line of the base plate perpendicular to the flange plate; a stiffening plate is connected between the two support plates.

[0014] The bottom of the inner casing is equipped with two rows of rollers. After the inner casing is removed from the outer casing, the two rows of rollers are supported on the upper surfaces of two support plates respectively.

[0015] In this design, after the bracket guide rod moves the inner casing and rotor out of the outer casing, the roller rolls precisely on the support plate, reducing the friction between the support plate and the inner casing.

[0016] Furthermore, four threaded holes are provided at the four corners of the base plate, and each of the four threaded holes is fitted with a height adjustment bolt.

[0017] In this solution, the height adjustment bolt is rotated to adjust its length extending from the bottom of the base plate, thereby controlling the height of the base plate at various positions and facilitating adjustment of the base plate to ensure it is level.

[0018] Furthermore, two lifting lugs are connected to each of the two support plates.

[0019] Furthermore, there are four housing guide rods, which are distributed around the adapter plate; there are also four bracket guide rods, which are arranged in a ring around the center of the adapter plate.

[0020] In this design, four disassembly nuts can be rotated simultaneously during disassembly, causing the four bracket guide rods to move synchronously, ensuring the smooth removal of the inner casing.

[0021] Furthermore, the height support includes an adjustable height frame and a V-block, with the V-block fixed to the top of the adjustable height frame; the top of the V-block is used to support the process shaft at the end of the helium compressor rotor.

[0022] In this solution, during the disassembly of the rotor, the end of the rotor with the process shaft is supported by a V-block to ensure that the centerline of the rotor is in a horizontal state.

[0023] Furthermore, the bottom of the height adjustment frame is provided with bolt holes, and height adjustment bolts are installed in the bolt holes.

[0024] The beneficial effects of this utility model are:

[0025] The horizontal disassembly and assembly tooling provided by this utility model uses a guide bracket to horizontally pull the whole assembly consisting of the inner casing and the rotor out of the outer casing, realizing horizontal disassembly during the maintenance of the helium compressor. This disassembly method is suitable for disassembling and installing the rotor of the helium compressor on the work site. Compared with the existing vertical rotor hoisting method, it does not require disassembling and assembling pipelines and circuits on the outer casing, simplifying the maintenance process.

[0026] The horizontal disassembly and assembly fixture provided by this utility model enables the disassembly, assembly, and maintenance of a helium compressor in a horizontal position. During the disassembly and assembly process, the axial and radial relative positions of the rotor and the inner casing remain unchanged, eliminating the need to move the outer casing of the helium compressor to a dedicated maintenance area. The horizontal disassembly and assembly fixture easily meets the requirements for equipment installation and use, and its simple structure, ease of processing, and convenient installation can greatly save time, manpower, and space costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a horizontal disassembly and assembly tooling for a helium compressor and an assembly structure for a helium compressor according to the present invention.

[0028] Figure 2 This is a schematic diagram of the guide bracket structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the fixed bracket structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the support structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the inner casing structure of this utility model.

[0032] Figure label:

[0033] 1. Fixed bracket; 11. Connecting plate; 12. Threaded cylinder; 13. Flange ring; 2. Guide bracket; 21. Housing guide rod; 22. Adapter plate; 23. Fixing nut; 24. Bracket guide rod; 25. Removal nut; 26. Installation nut; 3. Support; 31. Base plate; 32. Flange plate; 33. Support plate; 34. Rib plate; 35. Height adjusting bolt; 36. Lifting lug; 4. Height bracket; 41. Height adjustment frame; 42. V-block; 5. Inner housing; 51. Roller; 6. Outer housing; 7. Rotor; 71. Process shaft; DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The specific embodiments of the present invention are described below to facilitate understanding by those skilled in the art. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they fall within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0035] like Figure 1 As shown, this embodiment provides a horizontal disassembly and assembly fixture for a helium compressor. This fixture allows the rotor 7 and inner casing 5 inside the helium compressor to be moved horizontally out of the outer casing 6, enabling disassembly and maintenance of the helium compressor in a horizontal position. Specifically, it includes:

[0036] Fixed bracket 1, guide bracket 2, support 3, and height bracket 4;

[0037] One side of the fixed bracket 1 is installed on the inner casing 5 of the helium compressor; the other side of the fixed bracket 1 is connected to the guide bracket 2; the bottom of the guide bracket 2 is provided with a support 3, and the inner casing 5 and rotor 7 of the helium compressor slide out of the outer casing 6 and are supported on the support 3, and the support 3 is fixed on the outer casing 6 of the helium compressor.

[0038] like Figure 2 As shown, the guide bracket 2 includes a housing guide rod 21, an adapter plate 22, and a bracket guide rod 24. One end of the housing guide rod 21 is connected to a threaded hole at the end of the outer housing 6. The other end of the housing guide rod 21 passes through the adapter plate 22. A disassembly nut 25 and an installation nut 26 are screwed onto the end of the housing guide rod 21 connected to the adapter plate 22. The disassembly nut 25 and the installation nut 26 are respectively located on both sides of the adapter plate 22. The bracket guide rod 24 passes through the adapter plate 22. The bracket guide rod 24 is connected to the adapter plate 22 by two fixing nuts 23 respectively located on both sides of the adapter plate 22. The other end of the bracket guide rod 24 is connected to the fixed bracket 1.

[0039] like Figure 3 As shown, the fixed bracket 1 includes a connecting plate 11 with a threaded hole. The connecting plate 11 is installed in the threaded hole on the end face of the inner casing 5 by a bolt passing through the threaded hole. A threaded cylinder 12 is fixed on the side of the connecting plate 11 away from the inner casing 5, and the bracket guide rod 24 is connected in the threaded cylinder 12. The connecting plate 11 can evenly distribute the tension or thrust provided by the bracket guide rod 24 and apply it to the inner casing 5, so as to avoid the bracket guide rod 24 exerting too large a force on the inner casing 5 at a local position, thereby damaging the inner casing 5.

[0040] The connecting plate 11 includes two semicircular plates, and two flange rings 13 are fixed on the same side of the two semicircular plates respectively; the two semicircular plates are connected by bolts passing through the two flange rings 13.

[0041] like Figure 4 As shown, the support 3 includes a base plate 31, a flange plate 32, a support plate 33, and a stiffening plate 34; the flange plate 32 is vertically connected to one side of the base plate 31; the support 3 is installed in the bolt holes on the end face of the outer casing 6 by bolts passing through the flange plate 32; two support plates 33 are connected to the base plate 31, and the tops of the two support plates 33 are inclined towards the center line of the base plate 31 perpendicular to the flange plate 32; a stiffening plate 34 is connected between the two support plates 33; as shown Figure 5 As shown, the bottom of the inner casing 5 is provided with two rows of rollers 51. After the inner casing 5 is removed from the outer casing 6, the two rows of rollers 51 are respectively supported on the upper surfaces of two support plates 33. After the bracket guide rod 24 drives the inner casing 5 and the rotor 7 to move out of the outer casing 6, the rollers 51 roll on the support plate 33, reducing the friction between the support plate 33 and the inner casing 5.

[0042] The base plate 31 has four threaded holes at its four corners, and each of the four threaded holes is fitted with a height adjusting bolt 35. By rotating the height adjusting bolt 35, the length of the bolt protruding from the bottom of the base plate 31 can be adjusted, thereby controlling the height of the base plate 31 at various positions and making it easy to adjust the base plate 31 to a horizontal state.

[0043] Two lugs 36 are connected to the two support plates 33 respectively.

[0044] There are four housing guide rods 21, which are distributed around the adapter plate 22. There are also four bracket guide rods 24, which are arranged in a ring around the center of the adapter plate 22. During disassembly, the four disassembly nuts 25 can be rotated at the same time to push the adapter plate 22 to move, which in turn drives the four bracket guide rods 24 to move synchronously, ensuring that the inner housing 5 can be pulled out smoothly.

[0045] The height support 4 includes a height adjustment frame 41 and a V-block 42. The V-block 42 is fixed on the top of the height adjustment frame 41. The top of the V-block 42 is used to support the process shaft 71 at the end of the helium compressor rotor 7. During the disassembly of the rotor 7, the end of the rotor 7 with the process shaft 71 is supported by the V-block 42 to ensure that the center line of the rotor 7 is in a horizontal state.

[0046] The bottom of the height adjustment frame 41 is provided with bolt holes, and height adjustment bolts 35 are installed in the bolt holes.

[0047] The working principle of this embodiment is as follows:

[0048] When disassembling the rotor 7 and inner casing 5 of the helium compressor using the horizontal disassembly tooling provided in this embodiment, the adapter plate 22 and the fixed bracket 1 are fixedly connected together using the bracket guide rod 24 and the fixing nut 23, and the casing guide rod 21 is fixed on the outer casing 6, with the other end of the casing guide rod 21 passing through the adapter plate 22; the disassembly nut 25 is rotated to move along the casing guide rod 21 to the side away from the outer casing 6, and the disassembly nut 25 pushes the adapter plate 22 to move together to the side away from the outer casing 6, and the adapter plate 22 pulls the bracket guide rod 24 to the side away from the outer casing 6, and the bracket guide rod 24 drives the fixed bracket 1 and the inner casing 5 to move synchronously, thereby pulling the whole assembly of the inner casing 5 and the rotor 7 out of the outer casing 6; after being pulled out, the roller 51 at the bottom of the inner casing 5 rolls on the upper surface of the support plate 33; thus completing the disassembly process.

[0049] When installing the inner casing 5 and the rotor 7, rotate the mounting nut 26 to move it along the casing guide rod 21 towards the side closer to the outer casing 6. The mounting nut 26 pushes the adapter plate 22 to move together towards the side closer to the outer casing 6. As the adapter plate 22 moves, it pushes the bracket guide rod 24 towards the side closer to the outer casing 6. The bracket guide rod 24 drives the fixed bracket 1 and the inner casing 5 to move synchronously, thereby pushing the inner casing 5 and the rotor 7 into the outer casing 6, thus realizing the installation of the rotor 7 and the inner casing 5.

[0050] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of this invention, and should be understood that the scope of protection of this invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on these technical teachings disclosed in this invention without departing from the essence of this invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A horizontal disassembly and assembly tooling for a helium compressor, characterized in that: It includes a fixed bracket (1), a guide bracket (2), a support (3) and a height bracket (4); one side of the fixed bracket (1) is installed on the inner casing (5) of the helium compressor; the other side of the fixed bracket (1) is connected to the guide bracket (2); the bottom of the guide bracket (2) is provided with the support (3), and the support (3) is fixed on the outer casing (6) of the helium compressor.

2. The horizontal disassembly and assembly fixture for a helium compressor according to claim 1, characterized in that: The guide bracket (2) includes a housing guide rod (21), one end of which is connected to a threaded hole at the end of the outer housing (6); the other end of the housing guide rod (21) passes through the adapter plate (22), and a disassembly nut (25) and an installation nut (26) are screwed onto the end of the housing guide rod (21) connected to the adapter plate (22), and the disassembly nut (25) and the installation nut (26) are respectively located on both sides of the adapter plate (22); A bracket guide rod (24) passes through the adapter plate (22); the bracket guide rod (24) is connected to the adapter plate (22) by two fixing nuts (23) respectively set on both sides of the adapter plate (22); the other end of the bracket guide rod (24) is connected to the fixed bracket (1).

3. The horizontal disassembly and assembly fixture for a helium compressor according to claim 2, characterized in that: The fixed bracket (1) includes a connecting plate (11), which has a threaded hole. The connecting plate (11) is installed in the threaded hole on the end face of the inner housing (5) by a bolt passing through the threaded hole. A threaded cylinder (12) is fixed on the side of the connecting plate (11) away from the inner housing (5), and the bracket guide rod (24) is connected in the threaded cylinder (12).

4. The horizontal disassembly and assembly fixture for a helium compressor according to claim 3, characterized in that: The connecting plate (11) includes two semicircular plates, and two flange rings (13) are fixed on the same side of the two semicircular plates respectively; the two semicircular plates are connected by bolts passing through the two flange rings (13).

5. The horizontal disassembly and assembly fixture for a helium compressor according to claim 2, characterized in that: The support (3) includes a base plate (31), and a flange plate (32) is vertically connected to one side of the base plate (31); the support (3) is installed in the bolt hole on the end face of the outer casing (6) by bolts passing through the flange plate (32); Two support plates (33) are connected to the base plate (31). The tops of the two support plates (33) are inclined toward the center line of the base plate (31) in a direction perpendicular to the flange plate (32). A stiffening plate (34) is connected between the two support plates (33). The bottom of the inner casing (5) is provided with two rows of rollers (51). After the inner casing (5) is removed from the outer casing (6), the two rows of rollers (51) are respectively supported on the upper surfaces of the two support plates (33).

6. The horizontal disassembly and assembly fixture for a helium compressor according to claim 5, characterized in that: The base plate (31) has four threaded holes at its four corners, and each of the four threaded holes is fitted with a height adjustment bolt (35).

7. The horizontal disassembly and assembly fixture for a helium compressor according to claim 5, characterized in that: Two lugs (36) are connected to the two support plates (33).

8. The horizontal disassembly and assembly fixture for a helium compressor according to claim 2, characterized in that: The housing guide rod (21) has four rods, which are distributed around the adapter plate (22); the bracket guide rod (24) has four rods, which are arranged in a ring around the center of the adapter plate (22).

9. The horizontal disassembly and assembly fixture for a helium compressor according to claim 1, characterized in that: The height support (4) includes a height adjustment frame (41) and a V-block (42), with the V-block (42) fixed to the top of the height adjustment frame (41); the top of the V-block (42) is used to support the process shaft (71) at the end of the helium compressor rotor (7).

10. The horizontal disassembly and assembly fixture for a helium compressor according to claim 9, characterized in that: The bottom of the height adjustment frame (41) is provided with bolt holes, and height adjustment bolts (35) are installed in the bolt holes.

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