Helium compressor installation and maintenance system and working method

Abstract

The invention relates to the technical field of helium compressor maintenance equipment, in particular to a helium compressor installation and maintenance system and a working method. The mounting and maintaining system comprises a dismounting device and a core pulling device, the dismounting device comprises an impeller end outer aligning support, a dismounting tension bar, a sliding rail, an outer sliding disc, an inner sliding disc and an aligning device. The impeller end outer aligning support is arranged on one side of the compressor, the outer sliding disc is arranged on the impeller end outer aligning support, and the disassembling tension bar is arranged in the impeller end outer aligning support in a sliding mode. The core pulling device comprises an impeller end support, a supporting plate, a core pulling tension rod, a supporting steel pipe and a jack. The impeller end support is arranged on one side of the compressor, the supporting steel pipe penetrates through the impeller end support and the supporting plate, the supporting plate is slidably connected with the supporting steel pipe, and one end of the jack is connected with the supporting plate. Due to the arrangement of the dismounting device and the core pulling device, the installation and maintenance efficiency of the helium compressor is obviously improved, and the investment of manpower and material resources is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of helium compressor maintenance equipment, and in particular to a helium compressor installation and maintenance system and a working method. Background Art

[0002] The helium compressor is a horizontal, high-speed, high-pressure ratio, variable frequency unit. The high-temperature gas-cooled reactor adopts a dual-stack single-unit overall layout. The two reactors share a fuel ball helium delivery system, which contains two helium compressors arranged in parallel, which can operate simultaneously or independently. When the reactor is operating normally, one is in operation and the other is in standby. The helium compressor system has the functions of transporting fuel balls, transporting absorber balls, and helium purification system to perform accident dehumidification and core low-flow cooling operation. The helium compressor performs various functions separately as needed, but does not perform multiple functions at the same time.

[0003] In actual use, the helium compressor of the high-temperature gas-cooled reactor demonstration project has no special core-pulling structure device for installation and maintenance. In addition, 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 to meet the stringent operating conditions. Summary of the invention

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

[0005] In order to solve the above technical problems, the present invention provides a helium compressor installation and maintenance system, including a disassembly device and a core pulling device; the disassembly device includes an outer centering bracket at the impeller end, a disassembly tension rod, a slide rail, an outer sliding disk, an inner sliding disk, and a centering device; the outer centering bracket at the impeller end is arranged on one side of the compressor, the outer sliding disk is arranged on the outer centering bracket at the impeller end, the disassembly tension rod is slidably arranged in the outer centering bracket at the impeller end, one end of the disassembly tension rod is connected to the outer sliding disk, and the other end is connected to the inner fixed disk, one end of the centering device is connected to the outer centering bracket at the impeller end, and the other end is connected to the core shaft; the slide rail is connected to the outer centering bracket at the impeller end The core bracket and the inner sliding plate, the inner sliding plate sleeve is arranged on the disassembly tension rod, and the inner sliding plate slides on the disassembly tension rod and the slide rail; the core pulling device includes an impeller end bracket, a support plate, a core pulling tension rod, a support steel pipe, and a jack; the impeller end bracket is arranged on one side of the compressor, the support steel pipe runs through the impeller end bracket and the support plate, the support plate is slidably connected to the support steel pipe, one end of the jack is connected to the support plate, and the other end is fitted 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 internal fixing sleeve, the internal fixing sleeve is connected to the rotor, the core shaft is inserted into the rotor, and the core shaft passes through the internal fixing sleeve and is inserted into the supporting steel pipe.

[0006] Furthermore, the centering device includes a connecting base, an adjusting screw, a sliding tube, a limit ring, and an adjusting rod; the connecting base is connected to the outer centering bracket at the impeller end, and a connecting protrusion is provided on the side wall of the connecting base, a sliding cavity is provided in the middle of the connecting base, 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 the connecting protrusion and one end of the sliding tube, the sliding tube is connected to the adjusting rod, and the adjusting rod is connected to the core shaft.

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

[0008] Furthermore, a positioning hole is provided on the sliding tube, and the fixing piece passes through the side wall of the connecting base and is connected to the positioning hole, so as to position the sliding tube after the centering.

[0009] Furthermore, the inner bracket at the motor end is arranged inside the compressor, and the inner bracket at the motor end is sleeved on the core shaft through a semicircular fixing sleeve.

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

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

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

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

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

[0015] During the disassembly operation, the disassembly device installs the outer self-aligning bracket at the impeller end on one side of the compressor, then removes the parts related to the electromagnetic bearing, temporarily places them in the position of the self-aligning device, installs and fixes the semicircular fixing sleeve, uses the adjustment of the outer self-aligning bracket and the self-aligning device at the impeller end, removes the parts related to the electromagnetic bearing, re-fixes the outer self-aligning bracket and the self-aligning device at the impeller end, installs the slide rail and the inner sliding disk, then installs the disassembly tension rod, and tightens and fixes it with the threaded hole of the internal electromagnetic bearing housing, moves the inner sliding disk forward to the vicinity of the end of the disassembly tension rod and fixes it, removes the electromagnetic bearing housing by manual push-pull operation or external pulling operation with a top screw, removes the outer self-aligning bracket at the impeller end, transports the electromagnetic bearing housing out by a crane, re-installs the outer self-aligning bracket, the slide rail and the inner sliding disk at the impeller end, fixes the inner fixed disk and the disassembly tension rod with fastening bolts, fixes the inner fixed disk and the threaded holes of the relevant parts of the rotor by manually pushing the handle or pushing in the top screw, and then removes all tooling;

[0016] When the core pulling device performs the core pulling operation, a jack is used to push it out, so that the support plate drives the core pulling tension rod to move, and then the rotor and related parts are pulled out of the compressor through multiple core pulling tension rods, and then the pulled-out rotor part related parts are lifted by a crane; then the impeller end bracket and the support plate are removed, and all the rotor part related parts are lifted out by a crane.

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

[0018] The helium compressor installation and maintenance system provided by the present invention comprises a disassembly device and a core pulling device; the disassembly device comprises an outer centering bracket at the impeller end, a disassembly tension rod, a slide rail, an outer sliding disk, an inner sliding disk, and a centering device; the outer centering bracket at the impeller end is arranged on one side of the compressor, the outer sliding disk is arranged on the outer centering bracket at the impeller end, the disassembly tension rod is slidably arranged in the outer centering bracket at the impeller end, one end of the disassembly tension rod is connected to the outer sliding disk, and the other end is connected to the inner fixed disk, one end of the centering device is connected to the outer centering bracket at the impeller end, and the other end is connected to the core shaft; the slide rail connects the outer centering bracket at the impeller end and the inner sliding disk The core pulling device comprises an impeller end bracket, a support plate, a core pulling rod, a support steel pipe and a jack; the impeller end bracket is arranged on one side of the compressor, the support steel pipe runs through the impeller end bracket and the support plate, the support plate is slidably connected with the support steel pipe, one end of the jack is connected with the support plate, and the other end is fitted with the compressor, one end of the core pulling rod is connected with the support plate, and the other end is connected with the internal fixing sleeve, the internal fixing sleeve is connected with the rotor, the core shaft is inserted into the rotor, and the core shaft passes through the internal fixing sleeve and is inserted into the support steel pipe.

[0019] During the disassembly operation, the disassembly device installs the outer self-aligning bracket at the impeller end on one side of the compressor, then removes the parts related to the electromagnetic bearing, temporarily places them in the position of the self-aligning device, adjusts the outer self-aligning bracket at the impeller end and the self-aligning device, removes the parts related to the electromagnetic bearing, re-fixes the outer self-aligning bracket at the impeller end and the self-aligning device, installs the slide rail and the inner sliding disk, then installs the disassembly tension rod, and tightens and fixes it with the threaded hole of the internal electromagnetic bearing housing, moves the inner sliding disk forward to the vicinity of the end of the disassembly tension rod, and removes the electromagnetic bearing housing by manual push-pull operation or top screw external pull operation, removes the outer self-aligning bracket at the impeller end, transports the electromagnetic bearing housing out by a crane, re-installs the outer self-aligning bracket at the impeller end, the slide rail, and the inner sliding disk, fixes the inner fixed disk and the disassembly tension rod with fastening bolts, fixes the inner fixed disk and the threaded hole of the rotor-related parts by manually pushing the handle or pushing the top screw, and then manually pulls the handle to remove all tooling. The slide rail and the inner fixed disk work together to balance the force, preventing the internal parts of the compressor from being damaged due to uneven force.

[0020] When the core pulling device performs the core pulling operation, a jack is used to push it out, so that the support plate drives the core pulling tension rod to move, and then the rotor and related parts are pulled out of the compressor through multiple core pulling tension rods, and then the pulled-out rotor part related parts are lifted by a crane; after removing the impeller end bracket and the support plate, all the rotor part related parts are lifted out by a crane.

[0021] The helium compressor installation and maintenance system, due to the setting of disassembly device and core pulling device, 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 investment in manpower and material resources, and strictly limits the radial displacement of the rotor part during the entire disassembly process to avoid collision and damage. The overall dimensions of the device fully meet the on-site working conditions and space limitations.

[0022] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the disclosure, nor is it intended to limit the scope of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0026] Figure 3 A schematic structural diagram of a semicircular fixing sleeve of a helium compressor installation and maintenance system provided by the present invention;

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

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

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

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

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

[0032] Fig. 9 A schematic structural diagram of a core pulling device of a helium compressor installation and maintenance system provided by the present invention;

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

[0034] Fig.11 This is an enlarged view of the connection structure of the helium compressor installation and maintenance system provided by the present invention.

[0035] Description of reference numerals:

[0036] 1. External self-aligning bracket at the impeller end; 2. Disassembly of tension rod; 3. Slide rail; 4. Semicircular fixing sleeve; 5. External sliding plate; 6. Internal sliding plate; 7. External self-aligning bracket at the motor end; 8. Internal bracket at the motor end; 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. Internal Fixed plate; 14. Upper part of impeller end bracket; 15. Lower part of impeller end bracket; 16. Support plate; 17. Pull-out tension rod; 18. Washer; 19. Support steel pipe; 20. Fixed frame; 21. No. 1 fastening bolt; 22. Jack bolt; 23. Motor end bracket; 24. Upper part of fixed flange; 25. Lower part of fixed flange; 26. No. 2 fastening bolt; 27. Flange steel pipe; 28. No. 3 fastening bolt; 29. ​​Jack; 30. Internal fixing sleeve; 31. Rotor; 32. Compressor left plate; 33. Compressor right plate; 34. Weight reduction hole. DETAILED DESCRIPTION

[0037] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0038] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0040] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] The disclosure below provides many different embodiments or examples to realize different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0042] The preferred embodiments of the present disclosure are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0043] See also 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 outer centering bracket 1 at the impeller end, a disassembly tension rod 2, a slide rail 3, an outer sliding disk 5, an inner sliding disk 6, and a centering device 10; the outer centering bracket 1 at the impeller end is arranged on one side of the compressor, the outer sliding disk 5 is arranged on the outer centering bracket 1 at the impeller end, the disassembly tension rod 2 is slidably arranged in the outer centering bracket 1 at the impeller end, one end of the disassembly tension rod 2 is connected to the outer sliding disk 5, and the other end is connected to the inner fixed disk 13, one end of the centering device 10 is connected to the outer centering bracket 1 at the impeller end, and the other end is connected to the core shaft 11; the slide rail 3 connects the outer centering bracket 1 at the impeller end and the inner sliding disk 6, the inner sliding disk 6 is sleeved on the disassembly tension rod 2, and the inner sliding disk 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 tension rod 17, a support steel pipe 19, and a jack 29; the impeller end bracket is arranged 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 is slidably connected to the support steel pipe 19, one end of the jack 29 is connected to the support plate 16, and the other end is fitted with the compressor, one end of the core pulling tension rod 17 is connected to the support plate 16, and the other end is connected to the internal fixing sleeve 30, the internal fixing sleeve 30 is connected to the rotor 31, the core shaft 11 is inserted into the rotor 31, and the core shaft 11 passes through the internal fixing sleeve 30 and is inserted into the support steel pipe 19.

[0045] During the disassembly operation, the disassembly device installs the outer self-aligning bracket 1 at the impeller end on one side of the compressor, then removes the parts related to the electromagnetic bearing and temporarily places them at the position of the self-aligning device 10, adjusts the outer self-aligning bracket 1 at the impeller end and the self-aligning device 10, removes the parts related to the electromagnetic bearing, re-fixes the outer self-aligning bracket 1 at the impeller end and the self-aligning device 10, installs the slide rail 3 and the inner sliding plate 6, then installs the disassembly tension rod 2, and tightens and fixes it with the threaded hole of the internal electromagnetic bearing housing, moves the inner sliding plate 6 forward to the vicinity of the end of the disassembly tension rod 2 and fixes it, removes the outer self-aligning bracket 1 at the impeller end, transports the electromagnetic bearing housing out by a crane, re-installs the outer self-aligning bracket 1 at the impeller end, the slide rail 3 and the inner sliding plate 6, fixes the inner fixed plate 13 and the disassembly tension rod 2 with fastening bolts, fixes the inner fixed plate 13 and the threaded holes of the relevant parts of the rotor 31 by manually pushing the handle 9 or pushing the screw in, manually pulls the handle 9, and removes all tooling. The slide rail 3 and the inner fixed plate 13 work together to balance the force, thereby preventing the internal parts of the compressor from being damaged due to uneven force.

[0046] When the core pulling device performs the core pulling operation, the jack 29 is used to push out, so that the support plate 16 drives the core pulling tension rod 17 to move, and then the rotor 31 and related parts are pulled out from the compressor through multiple core pulling tension rods 17, and then the pulled out rotor 31 related parts are lifted by a crane; after removing the impeller end bracket and the support plate 16, all the rotor 31 related parts are lifted out by a crane.

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

[0048] Specifically, the centering 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 outer centering bracket 1 at the impeller end, and a connecting protrusion 104 is provided on the side wall of the connecting base 101, a sliding cavity 107 is provided in the middle part of the connecting base 101, 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 the connecting protrusion 104 and one end of the sliding tube 103, the sliding tube 103 is connected to the adjusting rod 110, and the adjusting rod 110 is connected to the core shaft 11.

[0049] The centering device 10 can be fixed by connecting the connecting base 101 to the outer centering bracket 1 at the impeller end; at the same time, a sliding cavity 107 is set in the connecting base 101, and a connecting protrusion 104 is set on the connecting base 101, so as to facilitate the sliding tube 103 to be placed in the sliding cavity 107, and then the adjusting screw 102 is used to simultaneously connect the sliding tube 103 and the connecting protrusion 104, so that the connecting base 101 and the sliding tube 103 are connected into an integral part, and then the sliding tube 103 is connected to the adjusting rod 110, and then connected to the core shaft 11, so that the position of the core shaft 11 can be adjusted by moving the adjusting screw 102, that is, whether it is in a concentric state with the outer centering bracket 1 at the impeller end.

[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] By setting an adjustment protrusion 106 on the sliding tube 103, and the adjustment protrusion 106 and the connecting protrusion 104 are both set in the sliding groove 108, and the sliding groove 108 has a certain length, it is convenient for the sliding tube 103 to slide relative to the connecting base 101, that is, to slide in the sliding cavity 107, and then the adjustment protrusion 106 is used to realize the connection between the connecting base 101 and the sliding tube 103.

[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 core shaft 11 through the adjusting rod 110. A positioning hole 109 is provided on the sliding tube 103. The fixing piece 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 centering.

[0054] Wherein, the fixing piece is a screw.

[0055] At the same time, one side of the adjusting rod 110 is connected to the threaded sleeve 111 by a bolt, and the threaded sleeve 111 is used to connect the mandrel 11. That is, the threaded sleeve 111 is threadedly connected to one end of the mandrel 11, thereby realizing the connection between the adjusting rod 110 and the mandrel 11, and then realizing the connection between the centering device 10 and the mandrel 11.

[0056] The motor end inner bracket 8 is arranged inside the compressor. The motor end inner bracket 8 is sleeved on the core shaft 11 through the semicircular fixing sleeve 4, so as to fix one end of the core shaft 11 and ensure the stability of the connection between the core shaft 11 and the threaded sleeve 111.

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

[0058] There are multiple disassembly tension rods 2, which are spaced apart along the radial direction of the impeller end outer centering bracket 1. This arrangement ensures the sliding stability of the inner sliding disk 6 arranged on the disassembly tension rod 2, and avoids the sliding tilting.

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

[0060] The disassembly device also includes a motor-end external centering bracket 7, which is arranged on the other side of the compressor, that is, the right side of the compressor, and can be adaptively adjusted according to actual conditions during actual use. The impeller-end external centering bracket 1 and the motor-end external centering bracket 7 are connected at both ends of the compressor.

[0061] When the motor end outer centering 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 optional embodiments, the impeller end bracket in the core pulling device includes an impeller end bracket upper half 14 and an impeller end bracket lower half 15, and the impeller end bracket upper half 14 and the impeller end bracket lower half 15 are buckled and arranged on one side of the compressor.

[0063] The core pulling device further includes a motor end bracket 23, which is connected to the other side of the compressor, and a flange steel pipe 27 passes through the motor end bracket 23 and is connected to the core shaft 11 through a connecting structure. That is, by passing the flange steel pipe 27 through the motor end bracket 23, the connection between the flange steel pipe 27 and the core shaft 11 can be achieved through the connecting structure.

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

[0065] In this embodiment, the connection structure includes a fixed flange upper half 24 and a fixed flange lower half 25, a No. 2 fastening bolt 26, and a No. 3 fastening bolt 28. The fixed flange upper half 24 and the fixed flange lower half 25 are buckled on one end of the core shaft 11. The No. 2 fastening bolt 26 is used to connect the fixed flange upper half 24 and the flange steel pipe 27, and the fixed flange lower half 25 and the flange steel pipe 27. The No. 3 fastening bolt 28 passes through the fixed flange upper half 24 and the fixed flange lower half 25 to connect the core shaft 11.

[0066] Among them, 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 casing, the fixed flange upper half 24 is buckled on the upper part of the right side of the core shaft 11, and the fixed flange lower half 25 is buckled on the lower part of the right side of the core shaft 11. The fixed flange upper half 24 is connected to the left flange plate of the flange steel pipe 27 through a plurality of No. 2 fastening bolts 26, and the fixed flange lower half 25 is connected to the left flange plate of the flange steel pipe 27 through a plurality of No. 2 fastening bolts 26. The fixed flange upper half 24 and the fixed flange lower half 25 are connected and fixed with the No. 2 fastening bolts 26, and the No. 3 fastening bolts are used to fasten the No. 3 fastening bolts. The bolt 28 passes through the upper half 24 of the fixed flange and the lower half 25 of the fixed flange to connect to the core shaft 11, and then the connection between the entire fixed flange and the center hole of the core shaft 11 is tightened by the No. 3 fastening bolt 28; during operation, the flange steel pipe 27 is passed through the motor end bracket 23, and the whole is lifted by a crane, and the side of the flange steel pipe 27 with the threaded hole is connected to the already fixed upper half 24 of the fixed flange and the 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 the compressor end fixing tooling with the No. 1 fastening bolt 21, and the installation is completed.

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

[0068] During actual use, the connecting screws between the internal fixing sleeve 30 and the compressor casing are removed, the core-pulling tension rod 17 is installed and fastened to the threaded hole of the internal fixing sleeve 30, so that the supporting steel pipe 19 is inserted into the internal fixing sleeve 30, the supporting plate 16 is put on the supporting steel pipe 19 and the core-pulling tension 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 fastening bolts. At this point, the installation of the compressor impeller end fixing tooling is completed.

[0069] The core pulling device also includes a compressor left plate 32, which is arranged on the left side of the compressor. The upper half 14 of the impeller end bracket and the lower half 15 of the impeller end bracket are connected to the compressor left plate 32 through No. 1 fastening bolts 21, thereby realizing the connection between the upper half 14 of the impeller end bracket and the lower half 15 of the impeller end bracket and the compressor left plate 32, and then realizing the connection between the upper half 14 of the impeller end bracket and the lower half 15 of the impeller end bracket and the compressor.

[0070] The frame 20 is also provided on both sides of the support plate 16 , and can extend the support plate 16 . The frame 20 is connected to the jack 29 .

[0071] Specifically, there are two jacks 29, which are symmetrically arranged on both sides of the fixing frame 20. This ensures the symmetry of the extraction core shaft 11 and the rotor 31 and avoids the occurrence of deviation.

[0072] The core pulling device also includes a compressor right plate 33, which is arranged on the right side of the compressor. The motor end bracket 23 is connected to the compressor right plate 33 through a No. 1 fastening bolt 21, thereby realizing the connection between the motor end bracket 23 and the compressor right plate 33, and then realizing the connection between the motor end bracket 23 and the compressor.

[0073] Among them, a plurality of connecting rods are arranged between the compressor right plate 33 and the motor end bracket 23. The arrangement of the connecting rods increases the distance between the motor end bracket 23 and the compressor right plate 33, and the distance is convenient for accommodating the flange steel pipe 27.

[0074] The core pulling device also includes a washer 18, and the bottom of the lower half of the impeller end bracket 15 is connected to the washer 18 through a plurality of top screw bolts 22. The setting of the washer 18 can increase the height of the lower half of the impeller end bracket 15, so that the upper half 14 of the impeller end bracket and the lower half 15 of the impeller end bracket are located on the same horizontal plane as the compressor housing, which is convenient for core pulling operation.

[0075] At the same time, a plurality of jack bolts 22 are used to connect the washer 18 and the bottom of the lower half 15 of the impeller end bracket, thereby ensuring the stability of the connection.

[0076] In addition, weight-reducing holes are provided on the upper half 14 and the lower half 15 of the impeller end bracket. The provision of the weight-reducing holes can reduce the overall weight of the upper half 14 and the lower half 15 of the impeller end bracket, thereby facilitating the handling and transportation of the board.

[0077] The present invention also provides a working method using a helium compressor installation and maintenance system, comprising:

[0078] During the disassembly operation, the disassembly device installs the outer self-aligning bracket 1 at the impeller end on one side of the compressor, then removes the parts related to the electromagnetic bearing, and temporarily places them at the position of the self-aligning device 10. After adjusting the outer self-aligning bracket 1 and the self-aligning device 10 at the impeller end, remove the parts related to the electromagnetic bearing, re-fix the outer self-aligning bracket 1 and the self-aligning device 10 at the impeller end, install the slide rail 3 and the inner sliding plate 6, and then install the disassembly tension rod 2, and tighten and fix it with the threaded hole of the internal electromagnetic bearing housing, move the inner sliding plate 6 forward to the vicinity of the end of the disassembly tension rod 2, and move the electromagnetic bearing housing out by manual push-pull operation or top screw external pulling operation, remove the outer self-aligning bracket 1 at the impeller end, transport the electromagnetic bearing housing out by a crane, re-install the outer self-aligning bracket 1, the slide rail 3, and the inner sliding plate 6 at the impeller end, fix the inner fixed plate 13 and the disassembly tension rod 2 with fastening bolts, fix the inner fixed plate 13 and the threaded holes of the relevant parts of the rotor 31 by manually pushing the handle 9 or pushing the top screw, and then remove all tooling;

[0079] When the core pulling device performs the core pulling operation, the jack 29 is used to push out, so that the support plate 16 drives the core pulling tension rod 17 to move, and then the rotor 31 and related parts are pulled out from the compressor through multiple core pulling tension rods 17, and then the pulled out rotor 31 related parts are lifted by a crane; then the impeller end bracket and the support plate 16 are removed, and all the rotor 31 related parts are lifted out by a crane.

[0080] The specific working method of the helium compressor installation and maintenance system is as follows: The specific disassembly method of the disassembly device is to install the outer self-aligning bracket 1 at the impeller end, then remove the parts related to the electromagnetic bearing, temporarily place them in the position of the self-aligning device 10, install and fix the semicircular fixing sleeve 4, adjust the outer self-aligning bracket 1 and the self-aligning device 10 at the impeller end, remove the parts related to the electromagnetic bearing, re-fix the outer self-aligning bracket 1 and the self-aligning device 10 at the impeller end, and remove the semicircular fixing sleeve 4; install the slide rail 3 and the inner sliding plate 6, and then install and disassemble the tension rod 2 and tighten it with the threaded hole of the internal electromagnetic bearing housing, and fix the inner The sliding plate 6 is moved forward to the vicinity of the end of the disassembly tension rod 2 and fixed with the limit pin 12. The electromagnetic bearing housing is moved out by manual pushing and pulling or by pulling with a top screw. The semicircular fixing sleeve 4 is fixed, the outer self-aligning bracket 1 at the impeller end is removed, and the electromagnetic bearing housing is transported out by a crane. The outer self-aligning bracket 1, the slide rail 3, and the inner sliding plate 6 at the impeller end are reinstalled, the semicircular fixing sleeve 4 is removed, and the inner fixing plate 13 and the disassembly tension rod 2 are fixed with fastening bolts. After the inner fixing plate 13 is fixed to the threaded holes of the relevant parts of the rotor 31 by manually pushing the handle 9 or pushing in the top screw, the handle 9 is manually pulled to remove all tooling.

[0081] The specific core pulling method of the core pulling device includes the following preliminary preparations: first, remove the connecting screws between the internal fixing sleeve 30 and the compressor housing, then install the core pulling tension rod 17, and connect and tighten it with the threaded hole of the internal fixing sleeve 30, so that the support steel pipe 19 is inserted into the internal fixing sleeve 30, the support plate 16 is put on the support steel pipe 19, and the core pulling tension rod 17 is 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 fastening bolts, so that the compressor impeller end fixing tooling is installed. Secondly, install the motor end bracket 23 on the other side of the compressor, and use the flange steel pipe 27 to pass through the motor end bracket 23, so that the flange steel pipe 27 can be connected to the core shaft 11 through the connecting structure, so that the compressor motor end fixing tooling is installed.

[0082] When performing the core pulling operation, two jacks 29 are used to simultaneously push out the fixed frame 20 and the support plate 16, so that the support plate 16 drives the core pulling tension rod 17 to move, and then the rotor 31 and related parts are pulled out of the compressor through multiple core pulling tension rods 17, and then the extracted rotor 31 parts are lifted up by a crane. At the same time, the flange steel pipe 27 connected to the core shaft 11 is also pulled out, and then the upper half 14 of the impeller end bracket and the support plate 16 are removed, and all the related parts of the rotor 31 are lifted out by a crane, and the lower half 15 of the impeller end bracket and the motor end bracket 23 are removed.

[0083] Among them, the upper half 14 of the impeller end bracket and the lower half 15 of the impeller end bracket are connected to guide and position the supporting steel pipe 19, so that the supporting steel pipe 19 always remains consistent with the axis of the compressor during operation, so that the dismantled rotor 31 and related parts can be moved out of the compressor horizontally. The whole process strictly limits the radial displacement of the rotor 31 to avoid collision and damage.

[0084] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A helium compressor installation and maintenance system, characterized in that: It includes a disassembly device and a core pulling device; The disassembly device comprises an outer centering bracket (1) at the impeller end, a disassembly tension rod (2), a slide rail (3), an outer sliding disk (5), an inner sliding disk (6), and a centering device (10); the outer centering bracket (1) at the impeller end is arranged on one side of the compressor, the outer sliding disk (5) is arranged on the outer centering bracket (1) at the impeller end, the disassembly tension rod (2) is slidably arranged in the outer centering bracket (1) at the impeller end, one end of the disassembly tension rod (2) is connected to the outer sliding disk (5), and the other end is connected to the inner fixed disk (13); one end of the centering device (10) is connected to the outer centering bracket (1) at the impeller end, and the other end is connected to the core shaft (11); the slide rail (3) connects the outer centering bracket (1) at the impeller end and the inner sliding disk (6), the inner sliding disk (6) is sleeved on the disassembly tension rod (2), and the inner sliding disk (6) slides on the disassembly tension rod (2) and the slide rail (3); The core pulling device comprises an impeller end bracket, a support plate (16), a core pulling tension rod (17), a support steel pipe (19), and a jack (29); the impeller end bracket is arranged 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 fitted with the compressor, one end of the core pulling tension rod (17) is connected to the support plate (16), and the other end is connected to the internal fixing sleeve (30), the internal fixing sleeve (30) is connected to the rotor (31), the core shaft (11) is inserted into the rotor (31), and the core shaft (11) passes through the internal fixing sleeve (30) and is inserted into the support steel pipe (19).

2. A helium compressor installation and maintenance system according to claim 1, characterized in that: The centering device (10) comprises 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 an outer centering bracket (1) at the impeller end, and a connecting protrusion (104) is provided on the side wall of the connecting base (101); a sliding cavity (107) is provided in the middle of the connecting base (101), 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 the connecting protrusion (104) and one end of the sliding tube (103), the sliding tube (103) is connected to the adjusting rod (110), and the adjusting rod (110) is connected to the core shaft (11).

3. A helium compressor installation and maintenance system according to claim 2, characterized in that: An adjusting protrusion (106) is provided on the sliding tube (103), and the adjusting protrusion (106) is located in the sliding groove (108). One end of the adjusting screw rod (102) is rotatably connected to the connecting protrusion (104), and the other end is threadedly connected to the adjusting protrusion (106).

4. A helium compressor installation and maintenance system according to claim 3, characterized in that: A positioning hole (109) is provided on the sliding tube (103), and a fixing piece 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 centering.

5. A helium compressor installation and maintenance system according to any one of claims 1-4, characterized in that: The motor end inner bracket (8) is arranged inside the compressor, and the motor end inner bracket (8) is sleeved on the core shaft (11) through a semicircular fixing sleeve (4).

6. A helium compressor installation and maintenance system according to claim 5, characterized in that: The core pulling device also includes a motor end bracket (23), which is connected to the other side of the compressor. The flange steel pipe (27) passes through the motor end bracket (23) and is connected to the core shaft (11) through a connecting structure.

7. A helium compressor installation and maintenance system according to claim 6, characterized in that: The connection structure comprises a fixed flange upper part (24) and a fixed flange lower part (25), a second fastening bolt (26), and a third fastening bolt (28). The fixed flange upper part (24) and the fixed flange lower part (25) are buckled on one end of the core shaft (11). The second fastening bolt (26) is used to connect the fixed flange upper part (24) and the flange steel pipe (27), and the fixed flange lower part (25) and the flange steel pipe (27). The third fastening bolt (28) passes through the fixed flange upper part (24) and the fixed flange lower part (25) to connect the core shaft (11).

8. A helium compressor installation and maintenance system according to claim 7, characterized in that: One end of the internal fixing sleeve (30) is inserted into the supporting steel pipe (19), and the other end of the internal fixing sleeve (30) is connected to the rotor (31).

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

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

Images