A compressor rotor disassembly and assembly tool

Abstract

This utility model discloses a compressor rotor disassembly and assembly fixture, relating to the field of compressor technology. The fixture includes a lifting slide fixedly connected to the compressor. The lifting slide is used to fix and support a lifting device track. The lifting device track has a lifting device for lifting the rotor. The lifting slide, lifting device track, and lifting device form a partial lifting arrangement on the compressor, with the rotor suspended on the lifting device by a lifting rope. This utility model solves the problems of cumbersome and unsafe operation in existing rotor disassembly and assembly processes, and can be used for the disassembly and assembly of gear compressor rotors in compressed air energy storage systems.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a compressor rotor disassembly and assembly tool. Background Technology

[0002] A gear-driven centrifugal compressor is a type of centrifugal compressor that compresses gas by driving an impeller to rotate at high speed through a gear speed-increasing mechanism. The assembly method for the rotor of a gear-driven centrifugal compressor is as follows: first, the rotor is mounted on the lower housing of the gearbox; then, centrifugal impellers are cantilevered at both ends of the rotor; finally, the upper housing of the gearbox is installed. Currently, the common method is to use a bridge crane to support the rotor, and then slowly move the rotor. The rotor can enter the gearbox from above the lower housing or through the side shaft hole.

[0003] In the process of realizing this utility model, the inventors discovered that the prior art has at least the following problems: When a bridge crane lifts a rotor, the height of the crane inevitably causes the rotor to sway. Because the rotor is a slender, rod-shaped precision component, controlling its sway is extremely difficult, often exceeding the span range that the bridge crane's control commands can cover or be effective over. Therefore, when using this method to install the rotor, collisions are extremely likely to occur during lifting. Furthermore, when encountering compressors with large rotors to be assembled or where the rotor installation space is limited, lifting and installing the rotor using a bridge crane is almost impossible. In such cases, manual installation is the only option, which not only requires a large number of workers and is time-consuming, but also carries the risk of rotor collisions and injuries. Therefore, the rotor disassembly and assembly in existing gear-driven centrifugal compressors is cumbersome and lacks standardized safety procedures. Summary of the Invention

[0004] The purpose of this invention is to provide a compressor rotor disassembly and assembly tool that can improve the safety and reliability of the rotor process.

[0005] To achieve this objective, on the one hand, a compressor rotor disassembly and assembly fixture is provided, including a lifting slide, on which a bracket fixedly connected to the compressor and a support for supporting a lifting device track are provided; the lifting device track has a lifting device for lifting the rotor; the lifting slide, the lifting device track and the lifting device form a partial lifting on the compressor, and the rotor is lifted on the lifting device by a lifting rope.

[0006] Furthermore, the lifting slide includes an upper slide and a lower slide, with the lower slide fixedly connected to the compressor. The upper slide is equipped with a slider, and the lower slide is equipped with a slide rail that is slidably connected to each other and matches the shape of the upper slide groove. The sliding of the upper slide slider along the slide rail of the lower slide is driven by a screw and nut. Adjusting the screw adjusts the position of the upper slide relative to the lower slide, thereby moving the lifting point of the rotor back and forth in space.

[0007] Furthermore, the lifting device includes a locking block for sliding connection with the lifting device track, and adjusting the position of the locking block on the lifting device track can adjust the left and right position of the lifting point in space.

[0008] Furthermore, the lifting device includes a locking block for sliding connection with the lifting device track. The locking block is provided with a lifting device rod, which moves within the locking block via a threaded transmission pair. The vertical position of the lifting point in space can be adjusted by adjusting the position of the lifting device rod on the locking block.

[0009] Furthermore, the lifting slide is provided in two sets, and the two sets of lifting slides are respectively fixed to the side of the compressor.

[0010] Furthermore, the lifting device is provided in two or more parts.

[0011] Furthermore, the upper slide is provided with a slider, the slider is provided with a groove, and the lower slide is provided with a slide rail that is slidably connected to each other and matches the shape of the groove. The groove is a dovetail groove.

[0012] Furthermore, the locking block includes a first locking block and a second locking block. The first locking block and the second locking block are fixedly connected by an adjusting member. When it is necessary to adjust the position of the locking block on the spreader track, the adjusting member is loosened. When it is necessary to fix the position of the locking block on the spreader track, the adjusting member is tightened.

[0013] Furthermore, the lifting rod is a slender rod, and a lifting lug for connecting the lifting rope is provided at the bottom of the lifting rod.

[0014] Furthermore, the bracket is provided with a fixing plate that can be detachably connected to the gearbox or compressor. The fixing plate has connection holes and is arc-shaped.

[0015] One of the above technical solutions has the following advantages or beneficial effects: The compressor rotor disassembly and assembly fixture includes a lifting slide, on which a bracket fixedly connected to the compressor and a support for supporting the lifting tool track are installed. The lifting slide is used to fix and support the lifting tool track, which has a lifting tool for lifting the rotor. The lifting slide, lifting tool track, and lifting tool form a partial lifting assembly on the compressor. When using this fixture to disassemble and assemble the rotor, the rotor is first lifted onto the lifting tool, which moves on the lifting tool track to install the impeller at the rotor end. After the impeller is installed, the rotor lifting assembly is removed, and finally the fixture is removed from the compressor. Compared with the prior art, this fixture lowers the rotor lifting height to the compressor or gearbox, thus lowering the lifting point during rotor lifting and solving the rotor sway problem at its source. In addition, for compact working environments, this fixture can be assembled and the rotor disassembly and assembly work can be completed, improving the safety and reliability of the rotor process. Attached Figure Description

[0016] Figure 1 An embodiment of the tooling is shown, mounted on the compressor volute. Figure 2 This is a schematic diagram of the compressor rotor disassembly and assembly fixture in the embodiment; Figure 3 This is a schematic diagram of the lifting slide in this embodiment; Figure 4 This is a structural schematic diagram of the lifting platform from another perspective; Figure 5 This is the front view of the lifting slide; Figure 6 yes Figure 5 GG cross-sectional view; Figure 7 This is a schematic diagram of the lifting device in an embodiment.

[0017] In the diagram: 100-Lifting slide; 110-Bracket; 111-Fixing plate; 112-Support plate; 113-Reinforcing rib; 120-Lower slide; 121-Slide rail; 122-Lead screw; 123-Through groove; 124-Baffle; 130-Upper slide; 131-Slider; 132-Dovetail groove; 133-Lead screw nut; 140-Support; 200-Lifting device rail; 300-Lifting device; 310-Locking block; 311-First locking block; 312-Second locking block; 320-Lifting device rod; 330-Lifting lug; 400-Compressor; 420-Gearbox; 410-Vortex housing. Detailed Implementation

[0018] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0019] like Figure 1 As shown, the compressor rotor disassembly and assembly fixture is used for disassembling and assembling gear-driven centrifugal compressors. In a gear-driven centrifugal compressor, the compressor casing is directly suspended from the gearbox 420. The compressor rotor passes through the gearbox, and the gears of the gearbox are mounted on the rotor. The compressor impeller is connected to the end of the rotor and located inside the casing.

[0020] The compressor rotor assembly / disassembly fixture of this embodiment includes a lifting slide 100 fixedly connected to the compressor. The lifting slide 100 is used to fix and support the lifting device track. The lifting device track has a lifting device for lifting the rotor. The lifting slide 100, the lifting device track 200, and the lifting device 300 form a partial lifting assembly on the compressor. When using the fixture of this embodiment to assemble or disassemble the rotor, the rotor is first lifted onto the lifting device. The lifting device moves on the lifting device track to install the impeller at the end of the rotor. After installation, the rotor lifting device is removed, and finally the fixture is removed from the compressor. Compared with the prior art, the fixture of this embodiment lowers the rotor lifting height to the compressor or gearbox, thereby lowering the lifting point during rotor lifting and solving the rotor sway problem from the source. Furthermore, for compact working environments, the fixture of this embodiment can be assembled and the rotor assembly / disassembly work can be completed.

[0021] In this embodiment, the lifting slide 100 is fixedly and detachably connected to the gearbox 420 or the compressor 400. When it is necessary to disassemble or assemble the compressor rotor, the lifting slide 100 is fixedly connected to the compressor by fasteners. After the compressor rotor is disassembled or assembled, the lifting slide 100 can be removed from the compressor. For most compressors, two lifting slides 100 are provided, and the two lifting slides 100 are respectively placed at both ends of the compressor rotor to be assembled.

[0022] like Figures 3-6As shown, the lifting slide 100 includes a bracket 110 fixed to a gearbox or compressor. The bracket 110 has a fixing plate 111 detachably connected to the gearbox 420 or compressor 400, and the fixing plate has connection holes. Optionally, the shape of the fixing plate matches the fixing position of the gearbox or compressor. Preferably, the fixing plate 111 is arc-shaped. Since the fixing position of the gearbox or compressor is typically a circular flange, the arc-shaped fixing plate is part of a circle, increasing the contact area between the fixing plate and the gearbox or compressor. A lower slide 120 is fixedly mounted on the bracket 110, and the lower slide 120 and the bracket 110 can be fixedly connected by bolts. Optionally, the bottom surface of the lower slide 120 is fixedly connected to the bracket 110 via a support plate 112 on the bracket, and a reinforcing rib 113 is provided between the support plate 112 and the fixing plate 111.

[0023] An upper slide platform 130 is slidably connected to the lower slide platform 120, and the upper slide platform 130 and the lower slide platform 120 are connected by a guide rail structure. The upper slide platform 130 is provided with a slider 131, and the lower slide platform 120 is provided with a slide rail 121 that matches the shape of the groove on the slider 131 and is slidably connected to it. Figure 3 Optionally, the slider 131 is provided with a dovetail-shaped groove running through its sliding direction, also known as a dovetail groove 132. The shape of the slide rail 121 matches the dovetail groove 131. The dovetail groove 131 and the slide rail 121 matching its shape can ensure that the upper slide 130 moves linearly along the lower slide 120 while limiting the upper slide 130 and the lower slide 120 to each other, so that the upper slide 130 only retains the degree of freedom to move along the lower slide 120.

[0024] like Figures 3-6 As shown, the locking block guide rod is driven. A through groove 123 is provided in the middle of the lower slide 120, and the lead screw 122 and lead screw nut 133 are disposed in the through groove 123. Optionally, the through groove 123 is located in the slide rail 121. The length direction of the lead screw and the through groove is consistent with the length direction of the slide rail. The lead screw nut 133 is sleeved on the lead screw 122. Optionally, the top surface of the lead screw nut 133 is connected to the top wall of the groove in the slider 131 of the upper slide 130, and the bottom surface of the lead screw nut 133 is slidably connected to or spaced out from the bottom of the through groove 123 of the lower slide 120. A baffle 124 is provided at one end of the lower slide 120. The baffle 124 has a through hole through which the end of the lead screw 122 passes. The baffle is used to support the lead screw on one side and to prevent the upper slide from disengaging from the lower slide on the other side.

[0025] like Figures 3-6As shown, the upper slide 130 is provided with a support 140 for supporting the lifting rail 200. The support has through holes for the ends of the lifting rail 200 to pass through. The number of through holes on the support 140 is the same as the number of lifting rails 200. The ends of all lifting rails pass through the support 140 of the upper slide 130. Preferably, there are two lifting rails 200, which are arranged side by side. The support 140 is provided with two corresponding through holes for the ends of the lifting rails 200 to pass through.

[0026] A lifting device 300 is slidably connected to the lifting device track 200. In this embodiment, the lifting device 300 includes a locking block 310 for sliding connection with the lifting device track 200. The locking block 310 has a through hole that mates with the lifting device track 200. Further, the locking block 310 includes a first locking block 311 and a second locking block 312. The first locking block 311 and the second locking block 312 are fixedly connected by an adjusting member. The adjusting member is used to adjust the distance between the first locking block 311 and the second locking block 312, thereby adjusting the diameter of the through hole in the locking block 310 that mates with the lifting device track 200. When the position of the lifting device needs to be adjusted, the adjusting member is adjusted to increase the diameter of the through hole in the locking block 310 that mates with the lifting device track 200, allowing the lifting device to slide along the lifting device track 200. When it is necessary to fix the position of the lifting device 300 on the lifting device track 200, adjust the adjusting component so that the through hole of the locking block 310 is tightly fitted with the lifting device track 200, thereby fixing the position of the lifting device 300 on the lifting device track 200. Optionally, the adjusting component can be a bolt and nut, with the bolt inserted from above the first locking block 311 and the nut threadedly connected to the lower end of the second locking block 312. When it is necessary to adjust the position of the locking block 310, slightly loosen the nut to separate the first and second locking blocks. When it is necessary to fix the position of the locking block 310, tighten the nut so that both the first and second locking blocks are tightly fitted with the lifting device track 200.

[0027] The locking block 310 is also equipped with a lifting rod 320, which is a slender rod. Preferably, the lifting rod 320 is arranged perpendicular to the horizontal plane of the compressor, so that the direction of gravity of the suspended rotor is parallel to the length direction of the lifting rod, thereby reducing rotor sway. Optionally, the lifting rod 320 can move up and down on the locking block 310 to adjust the distance between the lower end of the lifting rod 320 and the compressor. Preferably, the lifting rod moves within the locking block via a threaded drive pair. The locking block 310 has an internal thread, and the lifting rod 320 has a corresponding external thread. The length of the external thread is the adjustable height range of the lifting rod 320 on the locking block 310. When the distance between the end of the lifting rod 320 and the compressor needs to be adjusted, the lifting rod 320 is screwed on, causing its external thread to rise or fall along the internal thread of the locking block 310. When the adjustment is in place, the height of the lifting rod 320 is locked by the external thread of the lifting rod 320 and the internal thread of the locking block 310. The lower end of the lifting rod 320 has a lifting lug 330 for lifting the rotor. The rotor (not shown in the figure) is connected to the lifting lug 330 by a lifting rope. Preferably, the lifting lug is a lock used in the lifting field, such as a turnbuckle, turnbuckle screw, or forged turnbuckle.

[0028] Optionally, two or more lifting devices 300 are provided. The number of lifting devices 300 is related to the rotor length. Each additional lifting device increases the lifting point on the rotor, making the rotor more stable. However, too many lifting devices can easily lead to redundancy or over-constraint. Generally, two lifting devices on the lifting device track 200 are sufficient to meet the lifting requirements. When the rotor length is large, two or more lifting devices 300 can be used to lift the rotor.

[0029] Figure 1 This embodiment illustrates the installation of the tooling on the compressor volute. Before hoisting, the tooling of this embodiment is first installed on the compressor 400. A lifting slide is assembled on the volute 410 on both sides of the compressor. The support of the lifting slide is detachably connected to the flange on the volute by bolts. After the two lifting slides are installed, the lifting rail 200 is installed on their supports. Locking blocks 310 are installed on the lifting rail, and lifting rods 320 are installed on the locking blocks 310.

[0030] Then, adjust the position of the lifting point of the tooling. Adjusting the lead screw 122 adjusts the position of the upper slide, thereby adjusting the front-to-back position of the lifting point in space. Adjusting the position of the locking block 310 on the lifting rail 200 adjusts the left-to-right position of the lifting point in space. Adjusting the position of the lifting rod 320 on the locking block 310 adjusts the up-to-down position of the lifting point in space. Through these methods, the lifting point of the tooling can be positioned at any desired location. Finally, attach the rotor to the lifting lug. During the assembly and disassembly of the compressor rotor, the rotor position can be adjusted at any time using the lead screw 122, locking block 310, and lifting rod 320.

[0031] In this embodiment, the tooling, which supports the slide 100, the lifting rail 200, and the lifting device 300, forms a partial lifting mechanism on the compressor. This minimizes the length of the lifting rope between the rotor and the tooling, thus solving the rotor sway problem at its source. Furthermore, in confined working environments, this tooling can be assembled and disassembled to complete the rotor assembly and disassembly, improving safety and reliability during the rotor operation.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection 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 utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly 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 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 directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A compressor rotor disassembly and assembly tooling, characterized in that, Includes a lifting slide, on which a bracket fixedly connected to the compressor and a support for supporting the lifting device track are installed; The lifting track has lifting devices for lifting the rotor; The lifting slide, lifting rail, and lifting device form a partial lifting system on the compressor, and the rotor is lifted onto the lifting device by a lifting rope.

2. The compressor rotor disassembly and assembly fixture according to claim 1, characterized in that, The lifting slide includes an upper slide and a lower slide, with the lower slide being fixedly connected to the compressor. The upper slide is equipped with a slider, and the lower slide is equipped with a slide rail that matches the shape of the upper slide groove of the slider and is slidably connected to each other. The sliding of the upper slide and the lower slide slider along the slide rail of the lower slide is driven by a screw and nut. Adjusting the screw adjusts the position of the upper slide relative to the lower slide, thereby moving the lifting point of the rotor back and forth in space.

3. The compressor rotor disassembly and assembly fixture according to claim 1, characterized in that, The lifting device includes a locking block for sliding connection with the lifting device track. Adjusting the position of the locking block on the lifting device track can adjust the left and right position of the lifting point in space.

4. The compressor rotor disassembly and assembly fixture according to claim 1, characterized in that, The lifting device includes a locking block for sliding connection with the lifting device track. The locking block is equipped with a lifting device rod, which moves within the locking block via a threaded transmission pair. The vertical position of the lifting point in space can be adjusted by adjusting the position of the lifting device rod on the locking block.

5. The compressor rotor disassembly and assembly fixture according to claim 1, characterized in that, The lifting slide is provided in two sets, and the two sets of lifting slides are respectively fixed to the side of the compressor.

6. The compressor rotor disassembly and assembly fixture according to claim 1, characterized in that, The lifting device is provided in two or more parts.

7. The compressor rotor disassembly and assembly fixture according to claim 2, characterized in that, The upper slide is equipped with a slider, and the slider has a groove. The lower slide is equipped with a slide rail that matches the shape of the groove and is slidably connected to each other. The groove is a dovetail groove.

8. The compressor rotor disassembly and assembly fixture according to claim 3, characterized in that, The locking block includes a first locking block and a second locking block. The first locking block and the second locking block are fixedly connected by an adjusting member. When it is necessary to adjust the position of the locking block on the spreader track, the adjusting member is loosened. When it is necessary to fix the position of the locking block on the spreader track, the adjusting member is tightened.

9. The compressor rotor disassembly and assembly fixture according to claim 4, characterized in that, The lifting rod is a slender rod, and there are lifting lugs at the bottom of the lifting rod for connecting the lifting rope.

10. The compressor rotor disassembly and assembly fixture according to claim 1, characterized in that, The bracket is equipped with a mounting plate that can be detachably connected to the gearbox or compressor. The mounting plate has connection holes and is arc-shaped.

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