Method for dismounting a compressor cylinder

Abstract

The application provides a dismounting method of a compressor cylinder, comprising a cylinder extraction method, which comprises: performing a cylinder extraction operation on an inner cylinder of a compressor to extract the inner cylinder from an outer cylinder of the compressor; when the inner cylinder is extracted by a first preset length, a first rolling support on a small-end side of the inner cylinder loses support and is supported by a second rolling support on a large-end side of the inner cylinder, the inner cylinder is leveled on the large-end side of the inner cylinder by using a leveling tool, and then the cylinder extraction operation is continuously performed; when the inner cylinder is extracted to a second preset length, a lifting hole on the large-end side of the inner cylinder is exposed, a lifting lug is installed, the inner cylinder is leveled by using the leveling tool, and then the cylinder extraction operation is continuously performed; and the second preset length is greater than the first preset length. Through the technical scheme provided by the application, the technical problem of poor installation precision of the compressor cylinder in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of compressor cylinder assembly and disassembly technology, and more specifically, to a method for assembling and disassembling a compressor cylinder. Background Technology

[0002] Currently, large compressor units are the heart of petrochemical plants, operating under high pulsating loads. Overhauling large compressor units is a key and challenging aspect of chemical equipment maintenance. Due to their large size and difficult overall transportation, they must be assembled on-site, which involves complex procedures and stringent technical requirements. Because of the small clearance between the inner and outer cylinder blocks and the significant weight of the inner cylinder block, its disassembly and assembly are crucial for compressor installation and maintenance. Improper installation or adjustments will not only affect the progress of the entire installation work but also make it difficult for the unit to withstand the high piston forces during operation. This can lead to accelerated wear on the main bearings, piston rings, and cylinders, or, under pulsating loads, crankshaft main bearings may burn out, and piston rods may break, causing major equipment accidents.

[0003] However, due to the special structure of the compressor cylinder, which consists of two cylinders, an inner and an outer one, and sometimes with a variable diameter, the inner cylinder will tilt during disassembly after half of the cylinder is removed because of the "step" in the outer cylinder. Once tilted, the inner cylinder cannot be removed. During assembly, the inner cylinder is heavy and difficult to level. Using existing tools and previous maintenance methods can easily result in poor installation accuracy, causing damage to the compressor cylinder wall, long maintenance time, production delays, and wasted manpower, making it impossible to achieve quick and safe disassembly and assembly of the inner cylinder. Summary of the Invention

[0004] The main objective of this invention is to provide a method for disassembling and assembling a compressor cylinder block, so as to solve the technical problem of poor installation accuracy of compressor cylinder blocks in the prior art.

[0005] To achieve the above objectives, the present invention provides a method for disassembling and assembling a compressor cylinder, including a cylinder removal method. The cylinder removal method includes: performing a cylinder removal operation on the inner cylinder of the compressor to extract the inner cylinder from the outer cylinder of the compressor; when the inner cylinder is extracted to a first preset length, the first rolling support on the small end side of the inner cylinder loses its support and is supported by the second rolling support on the large end side of the inner cylinder; after leveling the inner cylinder on the large end side using a leveling tool, the cylinder removal operation continues; when the inner cylinder is extracted to a second preset length, the lifting hole on the large end side of the inner cylinder is exposed, a lifting lug is installed, the inner cylinder is leveled using a leveling tool, and the cylinder removal operation continues; wherein, the second preset length is greater than the first preset length.

[0006] Furthermore, before performing the cylinder removal operation on the inner cylinder body, the cylinder removal method also includes: installing cylinder removal tools, which include guide rails, guide rail supports, a moving structure, and hydraulic jacks; adjusting the position of the guide rail supports to make the guide rails horizontal; and installing hydraulic jacks on both sides of the inner cylinder body.

[0007] Furthermore, the inner cylinder is removed by means of: using a hydraulic jack to push a moving structure so that the moving structure moves the inner cylinder outward.

[0008] Furthermore, the moving structure is driven by hydraulic jacks, including ensuring that the strokes of the hydraulic jacks on both sides of the inner cylinder are kept consistent.

[0009] Furthermore, the cylinder removal method also includes: when the first rolling support on the small end side of the inner cylinder loses support, controlling the fit clearance between the inner cylinder and the outer cylinder to be d, where 1mm≤d≤10mm.

[0010] Furthermore, the compressor cylinder disassembly and assembly method also includes a reassembly method, which includes: using the lifting lugs as the overall lifting points of the inner cylinder, and adding a counterweight on the large end side of the inner cylinder according to the torque balance principle, so as to level the inner cylinder once.

[0011] Furthermore, after leveling the inner cylinder, the reinstallation method also includes: pushing the inner cylinder towards the outer cylinder, and removing the lifting lug when the inner cylinder moves to the point where the lifting lug is close to the outer cylinder.

[0012] Furthermore, after removing the lifting lugs, the reinstallation method also includes: increasing the support height of the movable structure located below the large end side of the inner cylinder to perform secondary leveling of the inner cylinder, and supporting the small end side and the large end side of the inner cylinder respectively through the first rolling support and the second rolling support.

[0013] Furthermore, after the inner cylinder is leveled a second time, the reinstallation method also includes: using a hydraulic jack to push the inner cylinder into the outer cylinder.

[0014] Furthermore, before pushing the inner cylinder body to move closer to the outer cylinder body, the reinstallation method also includes: laying a support pad in the channel inside the outer cylinder body to support the inner cylinder body through the support pad.

[0015] By applying the technical solution of this invention, it is possible to level the inner cylinder body in a timely manner and perform the cylinder removal operation after leveling. This avoids the situation where the cylinder wall of the inner cylinder body is damaged by friction due to tilting and collision when it is removed in an unleveled state, effectively improving the installation accuracy of the inner cylinder body and facilitating the protection of the inner cylinder body. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A flowchart illustrating a method for disassembling and assembling a compressor rod according to an embodiment of the present invention is shown.

[0018] Figure 2 A partial structural schematic diagram of a cylinder-pulling tool provided according to an embodiment of the present invention is shown;

[0019] Figure 3 A schematic diagram showing the relative positions of a mobile trolley and a hydraulic jack according to an embodiment of the present invention is shown;

[0020] Figure 4 A schematic diagram showing the core-pulling direction of the inner cylinder of a compressor according to an embodiment of the present invention is shown;

[0021] Figure 5 A schematic diagram showing the relative positions of a mobile trolley, a guide rail, and a hydraulic jack according to an embodiment of the present invention is shown.

[0022] The above figures include the following reference numerals:

[0023] 10. Mobile trolley; 20. Guide rail; 30. Guide rail support; 40. Hydraulic jack;

[0024] 50. Inner cylinder block; 60. Outer cylinder block. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 As shown, an embodiment of the present invention provides a method for disassembling and assembling a compressor cylinder. The method includes a cylinder removal method, which includes: performing a cylinder removal operation on the inner cylinder 50 of the compressor to pull the inner cylinder 50 out of the outer cylinder 60 of the compressor; when the inner cylinder 50 is pulled out to a first preset length, the first rolling support on the small end side of the inner cylinder 50 loses its support and is supported by the second rolling support on the large end side of the inner cylinder 50; after leveling the inner cylinder 50 on the large end side using a leveling tool, the cylinder removal operation continues; when the inner cylinder 50 is pulled out to a second preset length, the lifting hole on the large end side of the inner cylinder 50 is exposed, a lifting lug is installed, the inner cylinder 50 is leveled using a leveling tool, and the cylinder removal operation continues; wherein, the second preset length is greater than the first preset length.

[0027] This method facilitates timely leveling of the inner cylinder 50 and allows for cylinder removal after leveling. It avoids damage to the cylinder wall of the inner cylinder 50 due to tilting and collision when it is removed in an unleveled state, effectively improving the installation accuracy of the inner cylinder 50 and facilitating its protection.

[0028] Specifically, such as Figure 4 As shown, the compressor core-pulling direction corresponds to the cylinder-pulling direction of the inner cylinder 50.

[0029] Specifically, the leveling tool can be a chain hoist, an electric crane, an electric hoist, or a hydraulic jack.

[0030] Specifically, during the cylinder extraction process, the length of the inner cylinder 50 that has been extracted can be measured to determine whether a leveling tool should be used for leveling.

[0031] Specifically, a first visual detection element can be installed at the cylinder port of the outer cylinder 60 or the cylinder port of the inner cylinder 50. This first visual detection element detects the distance between the cylinder ports of the outer cylinder 60 and the inner cylinder 50. When the first visual detection element detects that the distance between the cylinder ports of the outer cylinder 60 and the inner cylinder 50 is greater than a first preset length, that is, when the inner cylinder 50 has been withdrawn by the first preset length, the first visual detection element transmits a detection signal to an alarm element, which then issues an alarm signal. Specifically, the alarm element can be an alarm light and an audible element.

[0032] like Figure 2 , 3 As shown in Figure 5, in this embodiment, before performing the cylinder removal operation on the inner cylinder 50, the cylinder removal method further includes: installing a cylinder removal tool, which includes a guide rail 20, a guide rail support 30, a moving structure, and hydraulic jacks 40. The position of the guide rail support 30 is adjusted to make the guide rail 20 horizontal. Hydraulic jacks 40 are installed on both sides of the inner cylinder 50. With this structural arrangement, the inner cylinder 50 can be moved smoothly along a preset direction through the cooperation of the moving structure and the guide rail 20, avoiding severe wear between the inner cylinder 50 and the inner wall of the outer cylinder 60 during the cylinder removal process.

[0033] Specifically, the number of guide rails 20 can be greater than or equal to four, and the four guide rails 20 are arranged side by side to better ensure the smooth operation of the inner cylinder 50 during cylinder withdrawal and to reduce wear between the inner cylinder 50 and the outer cylinder 60 during the withdrawal process. Specifically, the dimensions of the guide rails 20, guide rail supports 30, and the moving structure can be adapted to the dimensions of the compressor to ensure smooth cylinder withdrawal of the inner cylinder 50. Specifically, the moving structure can be a trolley 10, which is movably mounted on the guide rails 20, and the guide rails 20 are mounted on the guide rail supports 30.

[0034] Specifically, four guide rails are arranged on both sides, with two guide rails arranged side by side on each side.

[0035] Specifically, in this embodiment, the inner cylinder 50 is removed by using a hydraulic jack 40 to push a moving structure, causing the moving structure to move the inner cylinder 50 outward. This method facilitates providing sufficient thrust to the moving structure, enabling it to move smoothly and move the inner cylinder 50 outward.

[0036] In this embodiment, the hydraulic jacks 40 are used to push the moving structure, including ensuring that the strokes of the hydraulic jacks 40 on both sides of the inner cylinder 50 are consistent. This structural arrangement facilitates the stability of the inner cylinder 50's movement, preventing it from shifting during movement and ensuring that its position and orientation remain unchanged. This avoids situations where the inner cylinder 50 cannot be moved smoothly due to its erratic movement.

[0037] Specifically, the cylinder removal method in this embodiment further includes: when the first rolling support on the small end side of the inner cylinder 50 loses support, controlling the fit clearance between the inner cylinder 50 and the outer cylinder 60 to be d, where 1mm ≤ d ≤ 10mm. This method ensures sufficient clearance between the inner cylinder 50 and the outer cylinder 60, preventing collisions between them.

[0038] Specifically, in order to ensure that the gap between the inner cylinder 50 and the outer cylinder 60 is within the appropriate range mentioned above, the gap between the inner cylinder 50 and the outer cylinder 60 can be tested.

[0039] Specifically, a second visual inspection element can be provided on the outer wall of the inner cylinder 50 or the inner wall of the outer cylinder 60. The second visual inspection element is positioned facing the inner wall of the outer cylinder 60 or the outer wall of the inner cylinder 50. Specifically, in order to ensure the uniformity of the gap between the inner cylinder 50 and the outer cylinder 60, multiple second visual inspection elements can be provided around the periphery of the inner cylinder 50 or around the inner wall of the outer cylinder 60. The gap between the inner cylinder 50 and the outer cylinder 60 is determined based on the spacing range detected by the multiple second visual inspection elements to determine whether the peripheral gap between the inner cylinder 50 and the outer cylinder 60 is within a suitable gap.

[0040] Specifically, the detection spacing values ​​of multiple second-vision detection devices are acquired. An average detection spacing is calculated based on these values. Each detection spacing value is then compared to this average. When a detection spacing value is larger than the average, and this value exceeds one-third of the average, the corresponding second-vision detection device transmits a signal to the control unit. The control unit then transmits the corresponding adjustment spacing value and adjustment direction to the display panel for adjustment. After adjustment, the spacing of the multiple second-vision detection devices is re-detected until each detection spacing value does not exceed one-third of the average detection spacing.

[0041] To improve the detection accuracy of the second vision detection element, four second vision detection elements can be arranged circumferentially, evenly distributed. Thus, when the detection distance value detected by one of the second vision detection elements exceeds one-third of the average detection distance, the corresponding part of that second vision detection element can be moved closer to the second vision detection element positioned opposite it.

[0042] In this embodiment, the compressor cylinder disassembly and assembly method also includes a reassembly method. The reassembly method includes: using the lifting lugs as the overall lifting points of the inner cylinder 50, and adding a counterweight to the large end side of the inner cylinder 50 according to the torque balance principle to perform a leveling adjustment on the inner cylinder 50. This method ensures that the inner cylinder 50 remains level for a certain period during the reassembly process, facilitating smooth reassembly and avoiding collisions during the process.

[0043] Specifically, in this embodiment, after leveling the inner cylinder 50 once, the reinstallation method further includes: pushing the inner cylinder 50 towards the outer cylinder 60; and removing the lifting lug when the inner cylinder 50 moves to a position close to the outer cylinder 60. This method ensures that the inner cylinder 50 can be smoothly installed inside the outer cylinder 60 while also preventing wear on the outer cylinder 60 caused by the lifting lug.

[0044] In this embodiment, after removing the lifting lugs, the reinstallation method further includes: increasing the support height of the movable structure located below the large end side of the inner cylinder 50 to perform secondary leveling of the inner cylinder 50, and using the first rolling support and the second rolling support to support the small end side and the large end side of the inner cylinder 50, respectively. This method facilitates secondary leveling of the inner cylinder 50 after removing the lifting lugs, ensuring that the inner cylinder 50 remains level even after the lifting lugs are removed, thus facilitating smooth reinstallation.

[0045] Specifically, after the inner cylinder 50 is leveled a second time, the reinstallation method also includes: using a hydraulic jack 40 to push the inner cylinder 50 into the outer cylinder 60. This method allows the hydraulic jack 40 to provide sufficient pushing force, enabling the inner cylinder 50 to be smoothly pushed into the outer cylinder 60.

[0046] In this embodiment, before pushing the inner cylinder 50 towards the outer cylinder 60, the reinstallation method further includes: laying a support pad in the channel inside the outer cylinder 60 to support the inner cylinder 50. This method facilitates support of the small end side of the inner cylinder 50, preventing tilting of the inner cylinder 50 as it enters the outer cylinder 60.

[0047] Specifically, the cylinder removal method in this embodiment includes preliminary preparations, pre-removal work, cylinder removal, and installation of lifting lugs.

[0048] The general method for removing the cylinder is to use specialized tools to pull out a portion of the cylinder body. After tilting, a special hoisting tool is installed, and the cylinder body is leveled using a hoisting method before disassembly.

[0049] The preliminary preparation work involves installing the cylinder removal tools, which mainly include: guide rail 20, guide rail support 30 (no less than 4), cylinder removal "trolley" (i.e., the moving structure), and hydraulic jack 40. Among them, guide rail 20, guide rail support 30, and cylinder removal trolley are tools that are designed and manufactured according to the size of the compressor.

[0050] Before removing the cylinder, adjust the guide rail support 30 to make the guide rail 20 horizontal and the support evenly stressed.

[0051] When removing the cylinder, use hydraulic jack 40 to push the cylinder removal trolley, which will move the inner cylinder 50 outward. It is important to note that the stroke of the jacks on both sides must be consistent to avoid tilting when removing the cylinder.

[0052] When the inner cylinder 50 is drawn out to 25% to 50% of its total length, the roller on the small end side of the inner cylinder 50 disengages from the track and loses support, while the roller on the large end side provides support. However, because the compressor itself is heavier on the small end side than on the large end side, the inner cylinder 50 tilts towards the small end side, and the large end side lifts up. The clearance between the inner and outer cylinders can be selected as 5mm. To avoid direct friction between the inner and outer cylinders 60, which could cause scratches or jamming, the cylinder should be leveled on the large end side using a leveling tool before continuing to draw the cylinder.

[0053] As the cylinder body is continuously pulled out, once the lifting hole in the middle of the cylinder body appears, the lifting lugs are installed, and the cylinder body is leveled using leveling tools. Finally, the inner cylinder body 50 is pulled out smoothly.

[0054] Specifically, the compressor cylinder reinstallation method in this embodiment includes cylinder leveling, removing the lifting lugs, secondary cylinder leveling, pushing the cylinder, removing the counterweight, and installing it in place.

[0055] Because the inner cylinder 50 is quite heavy and has a sealing ring installed on it, during reassembly, it is necessary to ensure that the inner cylinder is reinstalled in place and that the sealing ring remains intact. At the same time, it is also necessary to avoid the cylinder getting stuck at the cylinder block step area, preventing it from being installed. Therefore, during reassembly, it is essential to ensure that the center lines of the inner and outer cylinder blocks 60 are parallel and that the clearances around them are consistent.

[0056] Specifically, in this embodiment, cylinder leveling means that the inner cylinder 50 should be leveled before the outer cylinder 60 is installed.

[0057] Specifically, the cylinder leveling method in this embodiment is as follows: using the top lifting lug of the inner cylinder 50 as the overall lifting point, since the lifting lug is close to the large end side, the small end side will sink. According to the torque balance principle: M1+M2=0, a corresponding counterweight is added to the large end side.

[0058] When the inner cylinder 50 is installed to the lifting lug, the cylinder is not yet fully installed, but the lifting lug must be removed at this time, changing the stress point of the inner cylinder 50. After removing the lifting lug, most of the weight of the cylinder will be supported by the large-end side roller, and part of the weight will be borne by the guide rail 20 through the sliding trolley, causing the cylinder to tilt again. To level the cylinder and allow the small-end side support roller to provide support, the height of the sliding trolley pulley is increased by 6mm, allowing for smooth reinstallation of the cylinder.

[0059] After the cylinder body is leveled, the inner cylinder body 50 is smoothly pushed into the outer cylinder body 60 using a hydraulic jack 40. However, because the outer cylinder body 60 has internal channels, the rollers of the inner cylinder body 50 may fall into the channels during reinstallation. Therefore, before installing the inner cylinder body 50, a support pad is laid in the internal channel of the outer cylinder body 60 to allow the rollers of the inner cylinder body 50 to pass through the support pad, thus enabling the inner cylinder body 50 to smoothly enter the outer cylinder body 60.

[0060] When the cylinder body is horizontally inserted to 50% of its total length, the small-end side rollers of the inner cylinder body 50 enter the corresponding tracks, providing support. The weight of the cylinder body can be fully supported by the rollers on both sides of the inner cylinder body 50, ensuring stability. At this point, the counterweight is removed, and then the hydraulic jack 40 is used to push the inner cylinder body 50 in horizontally and smoothly. When the end faces of the inner and outer cylinder bodies 60 are parallel, the inner cylinder body 50 is in place.

[0061] As can be seen from the above description, the above embodiments of the present invention achieve the following technical effects: high installation accuracy, fast installation speed, no damage to the compressor cylinder, easy operation, high operating efficiency, reduced workload, and stable operation of the unit after maintenance.

[0062] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0064] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0065] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0066] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for disassembling and assembling a compressor cylinder, characterized in that, The method includes a cylinder removal process, which includes: A cylinder removal operation is performed on the inner cylinder of the compressor to extract the inner cylinder from the outer cylinder of the compressor. When the inner cylinder is pulled out to the first preset length, the first rolling support on the small end side of the inner cylinder loses its support and is supported by the second rolling support on the large end side of the inner cylinder. After the inner cylinder is leveled on the large end side using a leveling tool, the cylinder pulling operation continues. When the inner cylinder is pulled out to the second preset length, the lifting hole on the large end side of the inner cylinder is exposed. Lifting lugs are installed, and the inner cylinder is leveled using a leveling tool. Then, the cylinder pulling operation continues. The second preset length is greater than the first preset length. The cylinder removal method further includes: when the first rolling support on the small end side of the inner cylinder loses support, controlling the fitting clearance between the inner cylinder and the outer cylinder to be d, where 1mm≤d≤10mm; A first visual detection element is provided at the cylinder port of the outer cylinder or the cylinder port of the inner cylinder. The first visual detection element is used to detect the distance between the cylinder port of the outer cylinder and the cylinder port of the inner cylinder. When the first visual detection element detects that the distance between the cylinder port of the outer cylinder and the cylinder port of the inner cylinder is greater than the first preset length, the first visual detection element transmits the detection signal to the alarm element, the alarm element issues an alarm signal, and the leveling tool is used to level the inner cylinder on the large end side of the inner cylinder. Multiple second visual detection elements are provided on the outer wall of the inner cylinder or the inner wall of the outer cylinder. The second visual detection elements are positioned facing the inner wall of the outer cylinder or the outer wall of the inner cylinder. The second visual detection elements are used to detect the gap between the inner cylinder and the outer cylinder, obtain the detection distance values ​​of the multiple second visual detection elements, and calculate the average detection distance based on the multiple detection distance values. When the detection distance value of any second visual detection element exceeds 1 / 3 of the average detection distance, the part corresponding to the second visual detection element is moved closer to the second visual detection element positioned opposite to it, until all the detection distance values ​​are less than or equal to 1 / 3 of the average detection distance.

2. The method for disassembling and assembling the compressor cylinder according to claim 1, characterized in that, Before performing the cylinder removal operation on the inner cylinder block, the cylinder removal method further includes: The cylinder removal tool includes a guide rail, a guide rail support, a moving structure, and hydraulic jacks. The position of the guide rail support is adjusted to make the guide rail horizontal. The hydraulic jacks are installed on both sides of the inner cylinder.

3. The method for disassembling and assembling the compressor cylinder according to claim 2, characterized in that, The cylinder removal operation of the inner cylinder includes: The hydraulic jack is used to push the moving structure, so that the moving structure drives the inner cylinder to move outward.

4. The method for disassembling and assembling the compressor cylinder according to claim 3, characterized in that, The method of using the hydraulic jack to push the moving structure includes: This ensures that the stroke of the hydraulic jacks on both sides of the inner cylinder remains consistent.

5. The method for disassembling and assembling the compressor cylinder according to claim 1, characterized in that, The compressor cylinder disassembly and assembly method further includes a reassembly method, which includes: The lifting lug is used as the overall lifting point of the inner cylinder, and a counterweight is added to the large end side of the inner cylinder according to the torque balance principle to level the inner cylinder once.

6. The method for disassembling and assembling the compressor cylinder according to claim 5, characterized in that, After leveling the inner cylinder once, the reassembly method further includes: The inner cylinder is pushed to move closer to the outer cylinder. When the inner cylinder moves to the point where the lifting lug is close to the outer cylinder, the lifting lug is removed.

7. The method for disassembling and assembling the compressor cylinder according to claim 6, characterized in that, After the lifting lugs are removed, the reinstallation method further includes: Increase the support height of the movable structure located below the large end side of the inner cylinder to perform secondary leveling of the inner cylinder, and support the small end side and the large end side of the inner cylinder respectively through the first rolling support and the second rolling support.

8. The method for disassembling and assembling the compressor cylinder according to claim 7, characterized in that, After the inner cylinder is leveled a second time, the reassembly method further includes: The inner cylinder is pushed into the outer cylinder using a hydraulic jack.

9. The method for disassembling and assembling the compressor cylinder according to claim 6, characterized in that, Before pushing the inner cylinder body towards the outer cylinder body, the reassembly method further includes: A support pad is laid in the channel inside the outer cylinder body to support the inner cylinder body.

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