Helium compressor installation and maintenance system and working method

Abstract

The present application relates to helium compressor maintenance equipment technical field, specifically to a kind of helium compressor installation and maintenance system and working method;The installation and maintenance system, including dismounting device and core pulling device;Dismounting device includes impeller end outer self-aligning support, dismounting tension rod, slide rail, outer sliding disc, inner sliding disc, self-aligning device;Impeller end outer self-aligning support is located at one side of compressor, outer sliding disc is located on impeller end outer self-aligning support, and dismounting tension rod is slidably arranged in impeller end outer self-aligning support;Core pulling device includes impeller end support, support plate, core pulling tension rod, support steel pipe, jack;Impeller end support is located at one side of compressor, support steel pipe penetrates impeller end support and support plate, support plate is slidably connected with support steel pipe, and one end of jack is connected with support plate.Due to the setting of dismounting device and core pulling device, the installation and maintenance efficiency of helium compressor is obviously improved, and the input of manpower and material resources is reduced.

Description

Technical Field

[0001] This invention relates to the field of helium compressor repair equipment technology, specifically to a helium compressor installation and repair system and its working method. Background Technology

[0002] The helium compressor is a horizontal, high-speed, high-pressure-ratio, variable-frequency unit. The high-temperature gas-cooled reactor adopts a dual-reactor, single-unit overall layout, with both reactors sharing a single fuel sphere helium delivery system. This system includes two parallel-connected helium compressors, which can operate simultaneously or independently. During normal reactor operation, one compressor is in operation, while the other is on standby. The helium compressor system is capable of delivering fuel spheres, delivering absorber spheres, and delivering helium during emergency dehumidification and low-flow-rate core cooling operations. The helium compressors perform various functions as needed, but not multiple functions simultaneously.

[0003] In actual use, the helium compressor of the high-temperature gas-cooled reactor demonstration project lacks a dedicated core-pulling structure for installation and maintenance. Furthermore, due to limitations imposed by factors such as on-site operating conditions and space, there is no suitable disassembly or core-pulling device to meet the stringent operating requirements. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that, due to the limitations of many factors such as on-site working conditions and space, there is no suitable disassembly device and core-pulling device in the prior art that can meet such stringent operating conditions, thereby providing a helium compressor installation and maintenance system and working method.

[0005] To address the aforementioned technical problems, this invention provides a helium compressor installation and maintenance system, including a disassembly device and a core-pulling device. The disassembly device includes an impeller end external self-aligning bracket, a disassembly tension rod, a slide rail, an outer sliding plate, an inner sliding plate, and a self-aligning device. The impeller end external self-aligning bracket is located on one side of the compressor, the outer sliding plate is mounted on the impeller end external self-aligning bracket, the disassembly tension rod is slidably mounted inside the impeller end external self-aligning bracket, one end of the disassembly tension rod is connected to the outer sliding plate, and the other end is connected to the inner fixed plate. One end of the self-aligning device is connected to the impeller end external self-aligning bracket, and the other end is connected to the core shaft. The slide rail connects to the impeller end external self-aligning bracket. The compressor consists of a core support and an inner sliding disc, with the inner sliding disc fitted onto the disassembly tension rod and sliding on the disassembly tension rod and slide rail. The core-pulling device includes an impeller end support, a support plate, a core-pulling tension rod, a support steel pipe, and a jack. The impeller end support is located on one side of the compressor, and the support steel pipe passes through the impeller end support and the support plate. The support plate and the support steel pipe are slidably connected. One end of the jack is connected to the support plate, and the other end is in contact with the compressor. One end of the core-pulling tension rod is connected to the support plate, and the other end is connected to the inner fixing sleeve. The inner fixing sleeve is connected to the rotor, and the core shaft is inserted into the rotor, passing through the inner fixing sleeve and into the support steel pipe.

[0006] Furthermore, the self-aligning device includes a connecting base, an adjusting screw, a sliding tube, a limiting ring, and an adjusting rod; the connecting base is connected to the impeller end external self-aligning bracket, and a connecting protrusion is provided on the side wall of the connecting base; the middle of the connecting base has a sliding cavity, and a sliding groove is provided on the side wall of the connecting base; the sliding tube is located in the sliding cavity and is slidably connected to the sliding cavity; the adjusting screw is inserted into one end of the connecting protrusion and the sliding tube; the sliding tube is connected to the adjusting rod; and the adjusting rod is connected to the mandrel.

[0007] Furthermore, the sliding tube is provided with an adjusting protrusion, which is located in the sliding groove. One end of the adjusting screw is rotatably connected to the connecting protrusion, and the other end is threadedly connected to the adjusting protrusion.

[0008] Furthermore, the sliding tube is provided with positioning holes, and the fixing component passes through the side wall of the connecting base and connects to the positioning holes for positioning the sliding tube after self-alignment.

[0009] Furthermore, the inner bracket at the motor end is located inside the compressor, and the inner bracket at the motor end is fitted onto the spindle by a semi-circular fixing sleeve.

[0010] Furthermore, the core-pulling device also includes a motor end bracket, which is connected to the other side of the compressor. A flange steel pipe passes through the motor end bracket and is connected to the spindle through a connecting structure.

[0011] Furthermore, the connection structure includes an upper half and a lower half of a fixed flange, a No. 2 fastening bolt, and a No. 3 fastening bolt. The upper half and the lower half of the fixed flange are fastened to one end of the mandrel. The No. 2 fastening bolt is used to connect the upper half of the fixed flange to the flange steel pipe, and the lower half of the fixed flange to the flange steel pipe. The No. 3 fastening bolt passes through the upper half and the lower half of the fixed flange and connects to the mandrel.

[0012] Furthermore, one end of the inner fixing sleeve is inserted into the supporting steel pipe, and the other end of the inner fixing sleeve is connected to the rotor.

[0013] Furthermore, the core-pulling rod is threadedly connected to the internal fixing sleeve.

[0014] The present invention also provides a working method for the installation and maintenance system of the helium compressor described above, comprising:

[0015] During disassembly, the impeller end external self-aligning bracket is installed on one side of the compressor. Then, the electromagnetic bearing-related components are removed and temporarily placed in the position of the self-aligning device. After installing and fixing the semi-circular fixing sleeve, the impeller end external self-aligning bracket and self-aligning device are adjusted. After removing the electromagnetic bearing-related components, the impeller end external self-aligning bracket and self-aligning device are re-fixed. The slide rail and inner sliding plate are installed. Then, the disassembly pull rod is installed and tightened with the threaded hole of the internal electromagnetic bearing housing. The inner sliding plate is moved forward to near the end of the disassembly pull rod and fixed. The electromagnetic bearing housing is moved out by manual push-pull operation or external pull operation with set screws. The impeller end external self-aligning bracket is removed. The electromagnetic bearing housing is transported out by crane. The impeller end external self-aligning bracket, slide rail, and inner sliding plate are reinstalled. The inner fixing plate is fixed to the disassembly pull rod with fastening bolts. The inner fixing plate is fixed to the threaded hole of the rotor-related components by manually pushing the handle or pushing in with set screws. After that, all tooling is removed.

[0016] When the core-pulling device performs the core-pulling operation, a jack is used to push out the core, causing the support plate to move the core-pulling rod. Then, multiple core-pulling rods pull the rotor and related parts out of the compressor. A crane is then used to lift the extracted rotor parts. The impeller end bracket and support plate are then removed, and all rotor parts are lifted out by a crane.

[0017] The technical solution of this invention has the following advantages:

[0018] The helium compressor installation and maintenance system provided by this invention includes a disassembly device and a core-pulling device. The disassembly device includes an impeller end external self-aligning bracket, a disassembly tension rod, a slide rail, an outer sliding plate, an inner sliding plate, and a self-aligning device. The impeller end external self-aligning bracket is located on one side of the compressor, the outer sliding plate is located on the impeller end external self-aligning bracket, the disassembly tension rod is slidably located inside the impeller end external self-aligning bracket, one end of the disassembly tension rod is connected to the outer sliding plate, and the other end is connected to the inner fixed plate. One end of the self-aligning device is connected to the impeller end external self-aligning bracket, and the other end is connected to the core shaft. The slide rail connects the impeller end external self-aligning bracket and the inner sliding plate. The inner sliding disc is fitted onto the disassembly pull rod and slides on the disassembly pull rod and slide rail. The core-pulling device includes an impeller end bracket, a support plate, a core-pulling pull rod, a support steel pipe, and a jack. The impeller end bracket is located on one side of the compressor. The support steel pipe passes through the impeller end bracket and the support plate. The support plate and the support steel pipe are slidably connected. One end of the jack is connected to the support plate, and the other end is in contact with the compressor. One end of the core-pulling pull rod is connected to the support plate, and the other end is connected to the inner fixing sleeve. The inner fixing sleeve is connected to the rotor. The core shaft is inserted into the rotor and passes through the inner fixing sleeve into the support steel pipe.

[0019] During disassembly, the device involves installing the impeller end external self-aligning bracket on one side of the compressor, then removing the electromagnetic bearing components and temporarily placing them in the self-aligning device's position. After adjusting the impeller end external self-aligning bracket and the self-aligning device, the electromagnetic bearing components are removed. The impeller end external self-aligning bracket and the self-aligning device are then re-secured. The slide rail and inner sliding plate are installed, followed by the installation of the disassembly pull rod, which is then tightened into the threaded hole of the internal electromagnetic bearing housing. The inner sliding plate is moved forward and fixed near the end of the disassembly pull rod. The electromagnetic bearing housing is removed using manual pushing and pulling or jacking screw pulling. The impeller end external self-aligning bracket is removed, and the electromagnetic bearing housing is transported out using a crane. The impeller end external self-aligning bracket, slide rail, and inner sliding plate are reinstalled. The inner fixed plate is fixed to the disassembly pull rod with fastening bolts. The inner fixed plate is then fixed to the threaded hole of the rotor components by manually pushing the handle or jacking screw. Finally, the handle is manually pulled to remove all tooling. The slide rail and inner fixed plate work together to ensure balanced force distribution, preventing uneven force from damaging internal compressor components.

[0020] When the core-pulling device performs the core-pulling operation, a jack is used to push out the core, causing the support plate to move the core-pulling rod. Then, multiple core-pulling rods pull the rotor and related parts out of the compressor. A crane is then used to lift the extracted rotor parts. After removing the impeller end bracket and support plate, all rotor parts are lifted out by a crane.

[0021] The helium compressor installation and maintenance system, with its disassembly and core-pulling devices, meets the installation and maintenance requirements of the helium compressor in the high-temperature gas-cooled reactor demonstration project, significantly improving the efficiency of helium compressor installation and maintenance, reducing the input of manpower and material resources, and strictly limiting the radial displacement of the rotor during the disassembly process to avoid damage from impacts. The external dimensions of the device fully meet the on-site working conditions and space constraints.

[0022] The summary section is provided to present the chosen concepts in a simplified form, which will be further described in the detailed description below. The summary section is not intended to identify essential or necessary features of this disclosure, nor is it intended to limit the scope of this disclosure. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the core-pulling device of the helium compressor installation and maintenance system provided by the present invention;

[0025] Figure 2 A cross-sectional view of the core-pulling device of the helium compressor installation and maintenance system provided by the present invention;

[0026] Figure 3 A schematic diagram of the semi-circular fixing sleeve of the helium compressor installation and maintenance system provided by the present invention;

[0027] Figure 4 A schematic diagram of the alignment device for the helium compressor installation and maintenance system provided by the present invention;

[0028] Figure 5 A cross-sectional view of the self-aligning device of the helium compressor installation and maintenance system provided by the present invention;

[0029] Figure 6 A schematic diagram of the internal fixing plate of the helium compressor installation and maintenance system provided by the present invention;

[0030] Figure 7 A schematic diagram of the threaded sleeve of the helium compressor installation and maintenance system provided by the present invention;

[0031] Figure 8 A cross-sectional view of the threaded sleeve of the helium compressor installation and maintenance system provided by the present invention;

[0032] Figure 9 A schematic diagram of the core-pulling device of the helium compressor installation and maintenance system provided by the present invention;

[0033] Figure 10 A cross-sectional view of the core-pulling device of the helium compressor installation and maintenance system provided by the present invention;

[0034] Figure 11 An enlarged view of the connection structure of the helium compressor installation and maintenance system provided by the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Impeller end external self-aligning bracket; 2. Removable tension rod; 3. Slide rail; 4. Semi-circular fixing sleeve; 5. Outer sliding plate; 6. Inner sliding plate; 7. Motor end external self-aligning bracket; 8. Motor end inner bracket; 9. Handle; 10. Self-aligning device; 101. Connecting base; 102. Adjusting screw; 103. Sliding tube; 104. Connecting protrusion; 105. Limiting ring; 106. Adjusting protrusion; 107. Sliding cavity; 108. Sliding groove; 109. Positioning hole; 110. Adjusting rod; 111. Threaded sleeve; 11. Mandrel; 12. Limiting pin; 13. Inner... 14. Fixed plate; 15. Upper half of impeller end bracket; 16. Lower half of impeller end bracket; 17. Support plate; 18. Pull-out tie rod; 19. Shim; 20. Support steel pipe; 21. Fixed bracket; 22. No. 1 fastening bolt; 23. Set screw; 24. Motor end bracket; 25. Upper half of fixed flange; 26. Lower half of fixed flange; 27. No. 2 fastening bolt; 28. Flange steel pipe; 29. ​​No. 3 fastening bolt; 30. Jack; 31. Internal fixing sleeve; 32. Rotor; 33. Compressor left plate; 34. Compressor right plate; 35. Weight reduction hole. Detailed Implementation

[0037] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0038] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or connections that allow for communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0040] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] The following disclosure provides numerous different embodiments or examples for implementing various structures of this disclosure. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this disclosure. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this disclosure, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0042] The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0043] Please see Figures 1 to 11As shown, the present invention provides a helium compressor installation and maintenance system, including a disassembly device and a core-pulling device; wherein, the disassembly device includes an impeller end external self-aligning bracket 1, a disassembly tension rod 2, a slide rail 3, an outer sliding disc 5, an inner sliding disc 6, and a self-aligning device 10; the impeller end external self-aligning bracket 1 is located on one side of the compressor, the outer sliding disc 5 is located on the impeller end external self-aligning bracket 1, the disassembly tension rod 2 is slidably located inside the impeller end external self-aligning bracket 1, one end of the disassembly tension rod 2 is connected to the outer sliding disc 5, and the other end is connected to the inner fixed disc 13, one end of the self-aligning device 10 is connected to the impeller end external self-aligning bracket 1, and the other end is connected to the mandrel 11; the slide rail 3 connects the impeller end external self-aligning bracket 1 and the inner sliding disc 6, the inner sliding disc 6 is sleeved on the disassembly tension rod 2, and the inner sliding disc 6 slides on the disassembly tension rod 2 and the slide rail 3;

[0044] The core-pulling device includes an impeller end bracket, a support plate 16, a core-pulling rod 17, a support steel pipe 19, and a jack 29. The impeller end bracket is located on one side of the compressor. The support steel pipe 19 passes through the impeller end bracket and the support plate 16. The support plate 16 and the support steel pipe 19 are slidably connected. One end of the jack 29 is connected to the support plate 16, and the other end is in contact with the compressor. One end of the core-pulling rod 17 is connected to the support plate 16, and the other end is connected to the inner fixing sleeve 30. The inner fixing sleeve 30 is connected to the rotor 31. The mandrel 11 is inserted into the rotor 31 and passes through the inner fixing sleeve 30 to be inserted into the support steel pipe 19.

[0045] During disassembly, the device installs the impeller end external self-aligning bracket 1 on one side of the compressor, then removes the electromagnetic bearing-related components and temporarily places them in the position of the self-aligning device 10. After removing the electromagnetic bearing-related components by adjusting the impeller end external self-aligning bracket 1 and the self-aligning device 10, the impeller end external self-aligning bracket 1 and the self-aligning device 10 are re-fixed. The slide rail 3 and the inner sliding plate 6 are installed, and then the disassembly pull rod 2 is installed and tightened to the threaded hole of the internal electromagnetic bearing housing. The inner sliding plate 6 is moved forward to near the end of the disassembly pull rod 2 and fixed. The electromagnetic bearing housing is moved out by manual push-pull operation or external pull operation with set screws. The impeller end external self-aligning bracket 1 is removed, and the electromagnetic bearing housing is transported out by crane. The impeller end external self-aligning bracket 1, slide rail 3, and inner sliding plate 6 are reinstalled. The inner fixed plate 13 is fixed to the disassembly pull rod 2 with fastening bolts. The inner fixed plate 13 is fixed to the threaded hole of the rotor 31-related components by manually pushing the handle 9 or pushing in with set screws. After that, the handle 9 is manually pulled to remove all tooling. The slide rail 3 and the inner fixed plate 13 work together to ensure balanced force distribution and prevent uneven force distribution from damaging the internal components of the compressor.

[0046] When the core-pulling device performs the core-pulling operation, the jack 29 is used to push out the core, causing the support plate 16 to move the core-pulling rod 17. Then, the rotor 31 and related parts are pulled out of the compressor through multiple core-pulling rods 17. Then, a crane is used to lift the extracted rotor 31 and related parts. After removing the impeller end bracket and support plate 16, all the related parts of the rotor 31 are lifted out by a crane.

[0047] This helium compressor installation and maintenance system meets the installation and maintenance requirements of helium compressors in the high-temperature gas-cooled reactor demonstration project, significantly improves the installation and maintenance efficiency of helium compressors, reduces the input of manpower and material resources, strictly limits the radial displacement of rotor 31 during the disassembly process to avoid collision damage, and the external dimensions of the device fully meet the on-site working conditions and space constraints.

[0048] Specifically, the self-aligning device 10 includes a connecting base 101, an adjusting screw 102, a sliding tube 103, and a limiting ring 105. The connecting base 101 is connected to the impeller end external self-aligning bracket 1, and a connecting protrusion 104 is provided on the side wall of the connecting base 101. The middle part of the connecting base 101 has a sliding cavity 107, and a sliding groove 108 is provided on the side wall of the connecting base 101. The sliding tube 103 is located in the sliding cavity 107 and is slidably connected to the sliding cavity 107. The adjusting screw 102 is inserted into one end of the connecting protrusion 104 and the sliding tube 103. The sliding tube 103 is connected to the adjusting rod 110, and the adjusting rod 110 is connected to the spindle 11.

[0049] The self-aligning device 10 can be fixed by connecting the connecting base 101 to the impeller end external self-aligning bracket 1. At the same time, a sliding cavity 107 is provided in the connecting base 101, and a connecting protrusion 104 is provided on the connecting base 101, so that the sliding tube 103 can be placed in the sliding cavity 107. Then, the adjusting screw 102 is used to connect the sliding tube 103 and the connecting protrusion 104 at the same time, so that the connecting base 101 and the sliding tube 103 are connected into a whole. Then, the sliding tube 103 is connected to the adjusting rod 110, and then connected to the spindle 11. Thus, the position of the spindle 11, that is, whether it is concentric with the impeller end external self-aligning bracket 1, can be adjusted by moving the adjusting screw 102.

[0050] The sliding tube 103 is provided with an adjusting protrusion 106, which is located in the sliding groove 108. One end of the adjusting screw 102 is rotatably connected to the connecting protrusion 104, and the other end is threadedly connected to the adjusting protrusion 106.

[0051] An adjustment protrusion 106 is provided on the sliding tube 103, and both the adjustment protrusion 106 and the connecting protrusion 104 are located in the sliding groove 108. The sliding groove 108 has a certain length, which facilitates the sliding tube 103 to slide relative to the connecting base 101, that is, to slide in the sliding cavity 107. The connection between the connecting base 101 and the sliding tube 103 is achieved by using the adjustment protrusion 106.

[0052] In some optional embodiments, the adjusting screw 102 is provided with a limiting ring 105, which is used to prevent the adjusting screw 102 from moving relative to the connecting base 101, thereby ensuring the connection stability of the adjusting screw 102 relative to the connecting base 101.

[0053] In this embodiment, the sliding tube 103 is connected to the spindle 11 via the adjusting rod 110. The sliding tube 103 is provided with a positioning hole 109. The fixing member passes through the side wall of the connecting base 101 and is connected to the positioning hole 109 for positioning the sliding tube 103 after self-alignment.

[0054] The fastener is a screw.

[0055] Meanwhile, one side of the adjusting rod 110 is connected to a threaded sleeve 111 by a bolt, and the threaded sleeve 111 is used to connect to the spindle 11. That is, by using the threaded sleeve 111 to thread one end of the spindle 11, the adjusting rod 110 is connected to the spindle 11, thereby realizing the connection between the adjusting rod 110 and the spindle 11, and thus realizing the connection between the self-aligning device 10 and the spindle 11.

[0056] The inner bracket 8 at the motor end is located inside the compressor. The inner bracket 8 at the motor end is fitted onto the spindle 11 by a semi-circular fixing sleeve 4, which can fix one end of the spindle 11 and ensure the stability of the connection between the spindle 11 and the threaded sleeve 111.

[0057] In this embodiment, the disassembly tension rod 2 is positioned by the limiting pin 12 to fix the inner sliding plate 6, thereby ensuring the stability of the inner sliding plate 6 when it is not required to slide.

[0058] The disassembly tension rods 2 are multiple, and are radially spaced along the outer self-aligning bracket 1 at the impeller end. This arrangement ensures the stability of the inner sliding disc 6 mounted on the disassembly tension rods 2, preventing sliding or tilting.

[0059] In some optional embodiments, the outer sliding disk 5 is provided with a handle 9. The handle 9 facilitates operation of the outer sliding disk 5 and provides an operating reference for the operator.

[0060] The disassembly device also includes an external self-aligning bracket 7 at the motor end, which is located on the other side of the compressor, i.e., the right side of the compressor. In actual use, it can be adjusted according to the specific circumstances. The external self-aligning bracket 1 at the impeller end and the external self-aligning bracket 7 at the motor end are connected at both ends of the compressor.

[0061] When the motor end external self-aligning bracket 7 is installed, the motor end can be disassembled, and the specific disassembly method is the same as that of the impeller end.

[0062] In some alternative embodiments, the impeller end bracket in the core-pulling device includes an upper impeller end bracket 14 and a lower impeller end bracket 15, which are fastened together on one side of the compressor.

[0063] The core-pulling device also includes a motor end bracket 23, which is connected to the other side of the compressor. A flange steel pipe 27 passes through the motor end bracket 23 and is connected to the mandrel 11 through a connecting structure. That is, by using the flange steel pipe 27 to pass through the motor end bracket 23, the flange steel pipe 27 can be connected to the mandrel 11 through the connecting structure.

[0064] Since the flange steel pipe 27 is connected to the mandrel 11 through the connecting structure, the flange steel pipe 27 connected to the mandrel 11 is also pulled out during the core-pulling operation.

[0065] In this embodiment, the connection structure includes an upper half 24 and a lower half 25 of a fixed flange, a second fastening bolt 26, and a third fastening bolt 28. The upper half 24 and the lower half 25 of the fixed flange are fastened to one end of the mandrel 11. The second fastening bolt 26 is used to connect the upper half 24 of the fixed flange and the flange steel pipe 27, as well as the lower half 25 of the fixed flange and the flange steel pipe 27. The third fastening bolt 28 passes through the upper half 24 and the lower half 25 of the fixed flange and connects to the mandrel 11.

[0066] The flange steel pipe 27 passes through the motor end bracket 23, and the left side of the flange steel pipe 27 is inserted into the compressor housing. The upper half 24 of the fixed flange is fastened to the upper part of the right side of the spindle 11, and the lower half 25 of the fixed flange is fastened to the lower part of the right side of the spindle 11. The upper half 24 of the fixed flange is connected to the left flange of the flange steel pipe 27 by multiple No. 2 fastening bolts 26, and the lower half 25 of the fixed flange is connected to the left flange of the flange steel pipe 27 by multiple No. 2 fastening bolts 26. The upper half 24 and the lower half 25 of the fixed flange are connected and fixed with No. 2 fastening bolts 26, and No. 3 fastening bolts are used. Bolt 28 passes through the upper half 24 and lower half 25 of the fixed flange and connects to the mandrel 11. Then, the connection between the entire fixed flange and the center hole of the mandrel 11 is tightened by the No. 3 fastening bolt 28. During operation, the flange steel pipe 27 passes through the motor end bracket 23 and is lifted by a crane. The threaded side of the flange steel pipe 27 is connected to the already fixed upper half 24 and lower half 25 of the fixed flange and fixed with the No. 2 fastening bolt 26. After completion, the motor end bracket 23 is fixed to this compressor end fixture with the No. 1 fastening bolt 21. The installation is complete.

[0067] Specifically, one end of the inner fixing sleeve 30 is inserted into the supporting steel pipe 19, and the other end of the inner fixing sleeve 30 is connected to the rotor 31.

[0068] In actual use, the connecting screws between the inner fixing sleeve 30 and the compressor housing are removed, the core-pulling rod 17 is installed and connected and tightened with the threaded hole of the inner fixing sleeve 30, so that the support steel pipe 19 is inserted into the inner fixing sleeve 30, the support plate 16 is put on the support steel pipe 19 and the core-pulling rod 17 are fixed with the limit pin 12, and then the lower half 15 of the impeller end bracket and the upper half 14 of the impeller end bracket are installed and fixed with the fastening bolts. At this point, the installation of the compressor impeller end fixing fixture is completed.

[0069] The core-pulling device also includes a compressor left plate 32, located on the left side of the compressor. The upper half 14 and the lower half 15 of the impeller end bracket are connected to the compressor left plate 32 by fastening bolt No. 1 21, thereby realizing the connection between the upper half 14 and the lower half 15 of the impeller end bracket and the compressor left plate 32, and thus realizing the connection between the upper half 14 and the lower half 15 of the impeller end bracket and the compressor.

[0070] It also includes a fixing frame 20, which is located on both sides of the support plate 16 and can extend the support plate 16. The fixing frame 20 is connected to the jack 29.

[0071] Specifically, there are two jacks 29, symmetrically arranged on both sides of the fixed frame 20. This ensures the symmetry of the extraction mandrel 11 and rotor 31, and avoids any misalignment.

[0072] The core-pulling device also includes a compressor right plate 33, which is located on the right side of the compressor. The motor end bracket 23 is connected to the compressor right plate 33 by a fastening bolt 21, thereby realizing the connection between the motor end bracket 23 and the compressor right plate 33, and thus realizing the connection between the motor end bracket 23 and the compressor.

[0073] Multiple connecting rods are provided between the right compressor plate 33 and the motor end bracket 23. The arrangement of these connecting rods increases the distance between the motor end bracket 23 and the right compressor plate 33, which facilitates the accommodation of the flange steel pipe 27.

[0074] The core-pulling device also includes a shim 18, which is connected to the bottom of the lower half 15 of the impeller end bracket by a plurality of set screws 22. The shim 18 increases the height of the lower half 15 of the impeller end bracket, so that the upper half 14 and the lower half 15 of the impeller end bracket are on the same horizontal plane as the compressor housing, which facilitates the core-pulling operation.

[0075] Meanwhile, multiple set screws 22 are used to connect the pad 18 and the bottom of the lower half 15 of the impeller end bracket, thereby ensuring the stability of the connection.

[0076] Furthermore, weight reduction holes are provided on both the upper half 14 and the lower half 15 of the impeller end support. The setting of these weight reduction holes can reduce the overall weight of the upper half 14 and the lower half 15 of the impeller end support, thereby facilitating plate handling and transportation.

[0077] This invention also provides a working method for an installation and maintenance system using a helium compressor, comprising:

[0078] During disassembly, the impeller end external self-aligning bracket 1 is installed on one side of the compressor. Then, the electromagnetic bearing-related components are removed and temporarily placed in the position of the self-aligning device 10. After removing the electromagnetic bearing-related components by adjusting the impeller end external self-aligning bracket 1 and the self-aligning device 10, the impeller end external self-aligning bracket 1 and the self-aligning device 10 are re-fixed. The slide rail 3 and the inner sliding plate 6 are installed. Then, the disassembly pull rod 2 is installed and tightened with the threaded hole of the inner electromagnetic bearing housing. The inner sliding plate 6 is moved forward to near the end of the disassembly pull rod 2 and fixed. The electromagnetic bearing housing is moved out by manual push-pull operation or external pull operation with set screws. The impeller end external self-aligning bracket 1 is removed. The electromagnetic bearing housing is transported out by crane. The impeller end external self-aligning bracket 1, slide rail 3, and inner sliding plate 6 are reinstalled. The inner fixed plate 13 is fixed to the disassembly pull rod 2 with fastening bolts. The inner fixed plate 13 is fixed to the threaded hole of the rotor 31-related components by manually pushing the handle 9 or pushing in with set screws. After that, all tooling is removed.

[0079] When the core-pulling device performs the core-pulling operation, the jack 29 is used to push out the core, causing the support plate 16 to move the core-pulling lever 17. Then, the rotor 31 and related parts are pulled out of the compressor through multiple core-pulling levers 17. Then, a crane is used to lift the extracted rotor 31 and related parts. Then, the impeller end bracket and support plate 16 are removed, and all the related parts of the rotor 31 are lifted out by a crane.

[0080] The specific working method of the helium compressor installation and maintenance system is as follows: The disassembly method of this disassembly device involves installing the impeller end external self-aligning bracket 1, then removing the electromagnetic bearing-related components and temporarily placing them in the position of the self-aligning device 10. After installing and fixing the semi-circular fixing sleeve 4, adjust the impeller end external self-aligning bracket 1 and the self-aligning device 10. After removing the electromagnetic bearing-related components, re-fix the impeller end external self-aligning bracket 1 and the self-aligning device 10, and remove the semi-circular fixing sleeve 4. Install the slide rail 3 and the inner sliding plate 6, then install and remove the tension rod 2 and tighten it with the threaded hole of the internal electromagnetic bearing housing. Move the sliding plate 6 forward to near the end of the disassembly tension rod 2 and fix it with the limit pin 12. Use manual push-pull operation or top screw pull operation to move the electromagnetic bearing housing out, fix the semi-circular fixing sleeve 4, remove the impeller end external self-aligning bracket 1, use a crane to transport out the electromagnetic bearing housing, reinstall the impeller end external self-aligning bracket 1, slide rail 3, and inner sliding plate 6, remove the semi-circular fixing sleeve 4, fix the inner fixing plate 13 to the disassembly tension rod 2 with fastening bolts, use manual push handle 9 or top screw push to fix the inner fixing plate 13 to the threaded holes of the relevant parts of rotor 31, and then manually pull handle 9 to remove all tooling.

[0081] The specific core-pulling method of this core-pulling device involves the following preliminary preparations: First, remove the connecting screws between the inner fixing sleeve 30 and the compressor housing. Then, install the core-pulling pull rod 17 and connect and tighten it with the threaded hole of the inner fixing sleeve 30. This allows the support steel pipe 19 to be fitted into the inner fixing sleeve 30. The support plate 16 is then fitted onto the support steel pipe 19, and the core-pulling pull rod 17 is fixed with limit pins 12. Next, install the lower half 15 and upper half 14 of the impeller end bracket and secure them with fastening bolts. This completes the installation of the compressor impeller end fixing fixture. Secondly, install the motor end bracket 23 on the other side of the compressor. By passing the flange steel pipe 27 through the motor end bracket 23, the flange steel pipe 27 can be connected to the spindle 11 through the connecting structure. This completes the installation of the compressor motor end fixing fixture.

[0082] During the core-pulling operation, two jacks 29 are used to simultaneously push out the fixed frame 20 and the support plate 16, causing the support plate 16 to move the core-pulling rod 17. Then, the rotor 31 and related parts are pulled out of the compressor through multiple core-pulling rods 17. Then, a crane is used to lift the extracted rotor 31 and related parts. At the same time, the flange steel pipe 27 connected to the spindle 11 is also pulled out. After removing the upper half 14 of the impeller end bracket and the support plate 16, all the related parts of the rotor 31 are lifted out by the crane. The lower half 15 of the impeller end bracket and the motor end bracket 23 are also removed.

[0083] The upper half 14 and the lower half 15 of the impeller end bracket are connected to guide and position the support steel pipe 19, so that the support steel pipe 19 always remains aligned with the compressor shaft during operation and use, allowing the removed rotor 31 and related parts to be moved horizontally out of the compressor. The entire process strictly limits the radial displacement of the rotor 31 to avoid collision damage.

[0084] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A helium compressor installation and maintenance system, characterized in that, Includes disassembly and core-pulling devices; The disassembly device includes an impeller end external self-aligning bracket (1), a disassembly tension rod (2), a slide rail (3), an outer sliding plate (5), an inner sliding plate (6), and a self-aligning device (10). The impeller end external self-aligning bracket (1) is located on one side of the compressor. The outer sliding plate (5) is located on the impeller end external self-aligning bracket (1). The disassembly tension rod (2) is slidably located inside the impeller end external self-aligning bracket (1). One end of the disassembly tension rod (2) is connected to the outer sliding plate (5), and the other end is connected to the inner fixed plate (13). One end of the self-aligning device (10) is connected to the impeller end external self-aligning bracket (1), and the other end is connected to the spindle (11). The slide rail (3) connects the impeller end external self-aligning bracket (1) and the inner sliding plate (6). The inner sliding plate (6) is sleeved on the disassembly tension rod (2), and the inner sliding plate (6) slides on the disassembly tension rod (2) and the slide rail (3). The core-pulling device includes an impeller end bracket, a support plate (16), a core-pulling rod (17), a support steel pipe (19), and a jack (29). The impeller end bracket is located on one side of the compressor. The support steel pipe (19) passes through the impeller end bracket and the support plate (16). The support plate (16) and the support steel pipe (19) are slidably connected. One end of the jack (29) is connected to the support plate (16), and the other end is attached to the compressor. One end of the core-pulling rod (17) is connected to the support plate (16), and the other end is connected to the inner fixing sleeve (30). The inner fixing sleeve (30) is connected to the rotor (31). The spindle (11) is inserted into the rotor (31). The spindle (11) passes through the inner fixing sleeve (30) and is inserted into the support steel pipe (19). The self-aligning device (10) includes a connecting base (101), an adjusting screw (102), a sliding tube (103), a limiting ring (105), and an adjusting rod (110). The connecting base (101) is connected to the impeller end external self-aligning bracket (1), and a connecting protrusion (104) is provided on the side wall of the connecting base (101). The middle part of the connecting base (101) has a sliding cavity (107), and a sliding groove (108) is provided on the side wall of the connecting base (101). The sliding tube (103) is located in the sliding cavity (107) and is slidably connected to the sliding cavity (107). The adjusting screw (102) is inserted into one end of the connecting protrusion (104) and the sliding tube (103). The sliding tube (103) is connected to the adjusting rod (110), and the adjusting rod (110) is connected to the spindle (11). The sliding tube (103) is provided with an adjusting protrusion (106). The adjusting protrusion (106) is located in the sliding groove (108). One end of the adjusting screw (102) is rotatably connected to the connecting protrusion (104), and the other end is threadedly connected to the adjusting protrusion (106).

2. The helium compressor installation and maintenance system according to claim 1, characterized in that, The sliding tube (103) is provided with a positioning hole (109). The fixing member passes through the side wall of the connecting base (101) and connects to the positioning hole (109) for positioning the sliding tube (103) after self-alignment.

3. A helium compressor installation and maintenance system according to claim 1 or 2, characterized in that, The motor end inner bracket (8) is located inside the compressor, and the motor end inner bracket (8) is fitted onto the spindle (11) through a semi-circular fixing sleeve (4).

4. The helium compressor installation and maintenance system according to claim 3, characterized in that, The core-pulling device also includes a motor end bracket (23), which is connected to the other side of the compressor. A flange steel pipe (27) passes through the motor end bracket (23) and is connected to the spindle (11) through a connecting structure.

5. The helium compressor installation and maintenance system according to claim 4, characterized in that, The connection structure includes an upper half (24) and a lower half (25) of a fixed flange, a No. 2 fastening bolt (26), and a No. 3 fastening bolt (28). The upper half (24) and the lower half (25) of the fixed flange are fastened to one end of the mandrel (11). The No. 2 fastening bolt (26) is used to connect the upper half (24) of the fixed flange and the flange steel pipe (27), as well as the lower half (25) of the fixed flange and the flange steel pipe (27). The No. 3 fastening bolt (28) passes through the upper half (24) and the lower half (25) of the fixed flange and connects to the mandrel (11).

6. The helium compressor installation and maintenance system according to claim 5, characterized in that, One end of the inner fixing sleeve (30) is inserted into the supporting steel pipe (19), and the other end of the inner fixing sleeve (30) is connected to the rotor (31).

7. A helium compressor installation and maintenance system according to claim 5, characterized in that, The core-pulling rod (17) is threadedly connected to the internal fixing sleeve (30).

8. A method for operating the helium compressor installation and maintenance system according to any one of claims 1-7, characterized in that, include: During disassembly, the impeller end external self-aligning bracket (1) is installed on one side of the compressor. Then, the electromagnetic bearing-related components are removed and temporarily placed in the position of the self-aligning device (10). By adjusting the impeller end external self-aligning bracket (1) and the self-aligning device (10), the electromagnetic bearing-related components are removed. The impeller end external self-aligning bracket (1) and the self-aligning device (10) are then re-fixed. The slide rail (3) and the inner sliding plate (6) are installed. Then, the disassembly pull rod (2) is installed and tightened with the threaded hole of the inner electromagnetic bearing housing. The inner sliding plate (6) is then installed. 6) Move forward to the vicinity of the end of the disassembly pull rod (2) and fix it. Use manual push-pull operation or top screw pull operation to move the electromagnetic bearing housing out. Remove the impeller end external self-aligning bracket (1). Use a crane to transport out the electromagnetic bearing housing. Reinstall the impeller end external self-aligning bracket (1), slide rail (3), and inner sliding plate (6). Fix the inner fixed plate (13) to the disassembly pull rod (2) with fastening bolts. Use manual push handle (9) or top screw push to fix the inner fixed plate (13) to the threaded holes of the relevant parts of the rotor (31). Remove all tooling. When the core-pulling device performs the core-pulling operation, the support plate (16) is pushed out by the jack (29), so that the support plate (16) drives the core-pulling rod (17) to move. Then, the rotor (31) and related parts are pulled out from the compressor by multiple core-pulling rods (17). Then, the relevant parts of the rotor (31) are lifted out by a crane. Then, the impeller end bracket and support plate (16) are removed, and all the relevant parts of the rotor (31) are lifted out by a crane.

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