Flue gas turbine rotor dismounting device

Abstract

The invention belongs to the field of petrochemical engineering equipment, particularly relates to a flue gas turbine rotor dismounting and mounting device, and aims to solve the problem of low efficiency caused by dismounting and mounting of tools such as a guide chain, and the flue gas turbine rotor dismounting and mounting device comprises a first guide rail, a first travelling crane, a pulley, a bearing box body and a second travelling crane, the first travelling crane and the pulley can raise the height of the rotor assembly so that the second travelling crane can be arranged between the first travelling crane and the pulley, after the second travelling crane and the rotor assembly are fixed, the first travelling crane and the second travelling crane move in the laying direction of the first guide rail so that the rotor assembly can be dragged out of the shell, and disassembly and assembly of the flue gas turbine rotor can be stably achieved; the efficiency of disassembling and assembling the flue gas turbine rotor can be effectively improved, and the disassembling and assembling process is safe and reliable.

Description

Technical Field

[0001] The invention belongs to the field of petrochemical equipment, and in particular relates to a flue gas turbine rotor disassembly and assembly device. Background Art

[0002] The flue gas turbine is a key equipment for energy saving in the catalytic cracking unit of an oil refinery. The stability of the bearings during operation plays a key role in the operating quality of the flue gas turbine.

[0003] The flue gas turbine rotor is a core component. Due to limited space at the flue gas turbine installation site, a crane cannot directly lift the rotor into place. Conventional tools such as guide chains are used for disassembly and assembly, which is inefficient and unsafe. Summary of the Invention

[0004] In order to solve the problem of low efficiency caused by the use of tools such as guide chains for disassembly and assembly in the prior art, the present invention provides a flue gas turbine rotor disassembly and assembly device, comprising a first guide rail, a first trolley, a pulley, a bearing housing, and a second trolley; The first trolley is slidably mounted on the first guide rail, and the pulley and the second trolley are both mounted on a slideway on the top of the bearing housing. The first trolley, the pulley, and the second trolley move in the same direction, and the first trolley and the pulley are respectively mounted at both ends of the rotor assembly. The first trolley and the pulley can raise the height of the rotor assembly so that the second trolley is set between the first trolley and the pulley. When the second trolley is fixed to the rotor assembly, the first trolley and the second trolley respectively move along the laying direction of the first guide rail to drag the rotor assembly out of the shell.

[0005] According to a flue gas turbine rotor disassembly and assembly device provided in some embodiments of the present application, an adjustment mechanism is provided at the bottom of the first guide rail, and the adjustment mechanism includes a base, a screw, a wire retaining ring, a steel ball and a top block; The screw is coaxially arranged inside the base, the top of the screw is in contact with the bottom of the top block through the steel ball, and the wire retaining ring is further arranged between the screw and the top block. When the screw rotates, the height of the first guide rail can be adjusted.

[0006] According to a flue gas turbine rotor disassembly and assembly device provided in some embodiments of the present application, a limiting pulley is provided at the bottom of the first crane, and the limiting pulley is adapted to the first guide rail.

[0007] According to some embodiments of the present application, a flue gas turbine rotor disassembly and assembly device is provided, wherein the first crane includes a bracket body and a crane body, a first screw is vertically arranged in the middle of the crane body, a first turbine box is adapted to be arranged on the first screw, and the first turbine box can drive the bracket body to move along the axial direction of the first screw.

[0008] According to a flue gas turbine rotor disassembly and assembly device provided in some embodiments of the present application, the bracket body includes a first fixing block, a second fixing block, and a first set screw; The first fixing block and the second fixing block are adaptively connected, and the first fixing block and the second fixing block are fixedly connected to the wheel disc of the rotor assembly through the first set screw.

[0009] According to some embodiments of the present application, a flue gas turbine rotor disassembly and assembly device is provided, wherein the pulley includes a pulley assembly, a first fixing bolt, a lower bearing, a first fixing screw, a lifting shoe, a second fixing screw, a connecting flange, a second set screw, a side beam assembly, a cross beam, a second fixing bolt, and a third fixing bolt; The second turbine box is provided on the crossbeam, and the second turbine box is connected to the second lead screw transmission. The bottom of the second lead screw passes through the crossbeam and is fixed with a connecting flange. The lower bearing is adapted to be connected to one end of the lifting pad through the first fixing screw, and the other end of the lifting pad is fixedly connected to the connecting flange through the second fixing screw. The side beam assembly is fixedly connected to the crossbeam through the third fixing bolt, and the pulley assembly is fixedly connected to the side beam assembly through the first fixing bolt.

[0010] According to some embodiments of the present application, a flue gas turbine rotor disassembly and assembly device further includes a level assembly, wherein the level assembly includes a bracket and a level; The level is fixed on the bracket, and the horizontal direction of the level is parallel to the axial direction of the rotor assembly.

[0011] Beneficial effects of the present invention: The rotor is slowly lifted horizontally to the required height by the first trolley and the pulley, and the second trolley is installed in place from neutral position. The first trolley and the pulley are lowered to the calculated height at the same time, and the rotor is placed on the second trolley. The rotor and the second trolley are fixed by the second trolley fastening mechanism, and then the rotor is moved along the first guide rail to gradually drag the rotor out of the casing. The disassembly and assembly of the flue gas turbine rotor can be smoothly realized, and the efficiency of disassembly and assembly of the flue gas turbine rotor can be effectively improved. The disassembly and assembly process is safe and reliable. Compared with the existing disassembly and assembly device, the time is shortened by at least 40%, with higher efficiency, and the rotor disassembly and assembly accident rate is reduced by more than 90%, which can effectively ensure the safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a schematic diagram of the overall structure of some embodiments of the present application; Figure 2 is a schematic diagram of the pulley structure of some embodiments of the present application; Figure 3 is a schematic diagram of a second driving structure of some embodiments of the present application; Figure 4 This is a schematic diagram of a first driving structure of some embodiments of the present application; Figure 5 is a schematic diagram of the structure of a level assembly according to some embodiments of the present application; Figure 6 is a schematic diagram of the wheel disc structure of the rotor assembly of some embodiments of the present application; Figure 7 yes Figure 6 A magnified schematic diagram of point A in the middle; Figure 8 It is a schematic diagram of the adjustment mechanism of some embodiments of the present application.

[0013] In the figure: 10, first guide rail; 11, base; 12, screw; 13, wire retaining ring; 14, steel ball; 15, top block; 20, first crane; 26, limiting pulley; 240, bracket body; 241, first fixed block; 242, second fixed block; 243, first set screw; 270, crane body; 40, pulley; 41, pulley assembly; 42, first fixing bolt; 43, lower bearing; 44, first fixing screw; 45, lifting shoe; 46, second fixing screw; 47, connecting flange; 48, set screw; 410, crossbeam; 411, second fixing bolt; 412, third fixing bolt; 490, side beam assembly; 50, second turbine box; 53, second lead screw; 60, bearing box; 70, rotor assembly; 80, second crane; 90, level assembly; 91, bracket; 92, level. DETAILED DESCRIPTION

[0014] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the relevant invention are shown in the accompanying drawings.

[0015] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0016] like Figures 1 to 7 As shown, the present invention provides a flue gas turbine rotor disassembly and assembly device, comprising a first guide rail 10, a first trolley 20, a pulley 40, a bearing housing 60 and a second trolley 80; The first trolley 20 is slidably mounted on the first guide rail 10. The pulley 40 and the second trolley 80 are both mounted on the slideway on the top of the bearing housing 60. The first guide rail 10 and the slideway on the top of the bearing housing 60 are laid in the same direction. The first trolley 20, the pulley 40, and the second trolley 80 move in the same direction. The first trolley 20 and the pulley 40 are respectively mounted at both ends of the rotor assembly 70. The first trolley 20 and the pulley 40 can raise the height of the rotor assembly 70 so that the second trolley 80 is set between the first trolley 20 and the pulley 40. When the second trolley 80 is fixed to the rotor assembly 70, the first trolley 20 and the second trolley 80 move along the laying direction of the first guide rail 10 to drag the rotor assembly 70 out of the shell.

[0017] During specific implementation, the first trolley 20 and the pulley 40 are used to slowly lift the rotor horizontally to the required height, and then the second trolley 80 is installed in place from the neutral position. The first trolley 20 and the pulley 40 are lowered to the calculated height at the same time, so that the rotor is placed on the second trolley 80, and the fastening mechanism of the second trolley 80 is used to fix the rotor to the second trolley 80, and then the rotor is moved along the first guide rail 10 to gradually drag the rotor out of the shell.

[0018] In some embodiments, an adjustment mechanism is provided at the bottom of the first guide rail 10 , and the adjustment mechanism includes a base 11 , a screw 12 , a wire retaining ring 13 , a steel ball 14 and a top block 15 ; A screw 12 is coaxially arranged inside the base 11, and the top of the screw 12 abuts against the bottom of the top block 15 through a steel ball 14. A wire retaining ring 13 is also arranged between the screw 12 and the top block 15. When the screw 12 rotates, the height of the first guide rail 10 can be adjusted.

[0019] When implementing it specifically, Figure 8 As shown, the height adjustment mechanism installed at the bottom of the first guide rail 10 includes a base 11, a screw 12, a wire retaining ring 13, a steel ball 14 and a top block 15. The bottom of the base 11 is in contact with the ground, the upper part of the screw 12 is in contact with the steel ball 14, and the top block 15 is in contact with the steel ball 14. A wire retaining ring 13 is provided between the screw 12 and the top block 15 to reduce the excessive axial force exerted by the screw on the steel ball 14, thereby reducing the rotational resistance of the screw 12 and solving the problem of smoothly adjusting the height under load conditions.

[0020] In some embodiments, a limiting pulley 26 is provided at the bottom of the first trolley 20 , and the limiting pulley 26 is adapted to the first guide rail 10 .

[0021] During specific implementation, the first guide rail 10 and the limiting pulley 26 of the first trolley 20 constitute a guiding mechanism, so that the first trolley 20 can move along the first guide rail 10. The track of the first guide rail 10 and the limiting pulley 26 of the first trolley 20 are used for guidance, which effectively solves the problem of movement obstruction caused by the parallelism error of the two guide rails.

[0022] In some embodiments, the first trolley 20 includes a bracket body 240 and a trolley body 270. A first screw is vertically arranged in the middle of the trolley body 270. A first turbine box is adapted to be arranged on the first screw. The first turbine box can drive the bracket body 240 to move along the axial direction of the first screw.

[0023] When implementing it specifically, Figure 4 As shown, the first trolley 20 is a traction device, and the bracket body 240 arranged thereon is a positioning device. A first screw is vertically arranged in the middle of the first trolley 20, and a first turbine box and a bracket body 240 are arranged on the first screw. The longitudinal movement of the bracket body 240 along the axial direction of the first screw is controlled by the transmission connection between the first turbine box and the first screw.

[0024] In some embodiments, the bracket body 240 includes a first fixing block 241 , a second fixing block 242 , and a first set screw 243 ; The first fixing block 241 and the second fixing block 242 are adaptively connected. The first fixing block 241 and the second fixing block 242 are fixedly connected to the wheel disc of the rotor assembly 70 through a first set screw 243 .

[0025] During specific implementation, the first fixing block 241 and the second fixing block 242 are arranged in an upper and lower halves, and the first fixing block 241 and the second fixing block 242 are buckled and fixed to one side of the wheel disc through the first fixing screw 243. The HALF design of the upper and lower fixing blocks facilitates the connection operation with the wheel disc. By setting the first fixing screw 243, the risk of damage caused by the relative displacement of the first crane 20 and the rotor assembly 70 during movement is avoided.

[0026] In some embodiments, the pulley 40 includes a pulley assembly 41, a first fixing bolt 42, a lower bearing shell 43, a first fixing screw 44, a lifting shell 45, a second fixing screw 46, a connecting flange 47, a second set screw 48, a side beam assembly 490, a cross beam 410, a second fixing bolt 411, and a third fixing bolt 412; A second turbine box 50 is provided on the crossbeam 410, and the second turbine box 50 is transmission-connected to the second lead screw 53. The bottom of the second lead screw 53 passes through the crossbeam 410 and is fixedly provided with a connecting flange 47. The lower bearing 43 is adaptively connected to one end of the lifting pad 45 through the first fixing screw 44, and the other end of the lifting pad 45 is fixedly connected to the connecting flange 47 through the second fixing screw 46. The side beam assembly 490 is fixedly connected to the crossbeam 410 through the third fixing bolt 412, and the pulley assembly is fixedly connected to the side beam assembly 490 through the first fixing bolt 42.

[0027] During specific implementation, the pulley 40 is a rear pulley, and the rear pulley lifting sliding mechanism is composed of the pulley 40 and the slideway of the second turbine box 50 and the bearing box 60. The pulley assembly 41 is connected to the side beam assembly 490 with a first fixing bolt 42, and the side beam assembly 490 is fastened to the cross beam 410 by a third fixing bolt 412. The lower bearing 43 is connected to the lifting pad 45 by a first fixing screw 44, and the lifting pad 45 is connected to the connecting flange 47 by a second fixing screw 46. The connecting flange 47 and the second screw 53 are locked by the second tightening screw 48. The pulley 40 and the second turbine box 50 are connected by a second fixing bolt 411. The HALF design of the upper lifting shoe is used to fix the shaft diameter of the rotor assembly, the slideway designed on the bearing housing 60 is used to achieve the follow-up sliding of the pulley 40, and the vertical lifting of the shaft of the rotor assembly 70 is achieved by the cooperation between the turbine box and the screw. The worm lead angle is smaller than the friction angle, which realizes reverse self-locking to prevent the load from sliding in the opposite direction. No additional braking mechanism is required, and high-precision control of vertical movement is achieved. In conjunction with the horizontal monitoring device, the controllability of the vertical lifting movement of the first crane 20 and the pulley 40 is achieved.

[0028] In some embodiments, a level assembly 90 is further included, and the level assembly 90 includes a bracket 91 and a level 92; The level 92 is fixed on the bracket 91 , and the horizontal direction of the level is parallel to the axis direction of the rotor assembly 70 .

[0029] In practice, the level assembly 90 is a deflection monitoring device, fastened to the coupling with bolts. The level 92 is used to monitor the degree of deflection during the rotor lifting and axial movement in real time, allowing for regulation during the lifting and movement process to ensure safety during the rotor assembly and disassembly process.

[0030] In practice, when disassembling the flue gas turbine rotor, first place one end of the first guide rail 10 on the base and level the other end using a support to ensure smooth sliding of the first trolley 20 on the guide rail. The first trolley 20 is then placed on the front guide rail and connected to the wheel disc of the rotor assembly 70 using the upper and lower fixing blocks on the first trolley 20. The wheel disc set screws are then tightened to lock the wheel disc, ensuring no relative displacement between the first trolley 20 and the rotor during assembly and disassembly. Then fix the pulley 40 to the appropriate position of the bearing box 60, separate the lifting shoe 45 of the pulley 40, insert the lower bearing shoe 43 into the appropriate position of the main shaft at the appropriate position, tighten the center dividing surface bolts of the lifting shoe 45 and the lower bearing shoe 43, and use the first turbine box and the second turbine box 50 to lift the rotor assembly 70 to the appropriate position, then loosen the fixing bolts of the pulley 40 and the bearing box, slowly pull the first crane 20, and smoothly move the rotor from the coupling side to the wheel side, move the center of gravity of the rotor to a position where the crane can lift it, and then use the crane to lift the rotor away from the flue gas turbine body. During the dragging process, closely observe the level assembly 90 of the deflection monitoring device. If there is any deflection, check and adjust it in time. The installation process is the opposite.

[0031] In the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are intended solely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not intended to indicate or imply relative importance.

[0032] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0034] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A flue gas turbine rotor disassembly and assembly device, characterized in that: It includes a first guide rail, a first trolley, a pulley, a bearing housing and a second trolley; The first trolley is slidably arranged on the first guide rail, and the pulley and the second trolley are both arranged on the slideway on the top of the bearing housing. The first guide rail and the slideway on the top of the bearing housing are laid in the same direction. The first trolley and the pulley are respectively arranged at both ends of the rotor assembly; The first trolley and the pulley can raise the height of the rotor assembly so that the second trolley is set between the first trolley and the pulley. When the second trolley is fixed to the rotor assembly, the first trolley and the second trolley respectively move along the laying direction of the first guide rail to drag the rotor assembly out of the shell.

2. The flue gas turbine rotor disassembly and assembly device according to claim 1, characterized in that: An adjustment mechanism is provided at the bottom of the first guide rail, and the adjustment mechanism includes a base, a screw, a wire retaining ring, a steel ball and a top block; The screw is coaxially arranged inside the base, the top of the screw is in contact with the bottom of the top block through the steel ball, and the wire retaining ring is further arranged between the screw and the top block. When the screw rotates, the height of the first guide rail can be adjusted.

3. The flue gas turbine rotor disassembly and assembly device according to claim 2, characterized in that: A limiting pulley is provided at the bottom of the first trolley, and the limiting pulley is adapted to the first guide rail.

4. The flue gas turbine rotor disassembly and assembly device according to claim 3, characterized in that: The first trolley includes a bracket body and a trolley body. A first screw is vertically arranged in the middle of the trolley body. A first turbine box is adapted to be arranged on the first screw. The first turbine box can drive the bracket body to move along the axial direction of the first screw.

5. The flue gas turbine rotor disassembly and assembly device according to claim 4, characterized in that: The bracket body includes a first fixing block, a second fixing block, and a first set screw; The first fixing block and the second fixing block are adaptively connected, and the first fixing block and the second fixing block are fixedly connected to the wheel disc of the rotor assembly through the first set screw.

6. The flue gas turbine rotor disassembly and assembly device according to claim 1, characterized in that: The pulley includes a pulley assembly, a first fixing bolt, a lower bearing, a first fixing screw, a lifting shoe, a second fixing screw, a connecting flange, a second set screw, a side beam assembly, a cross beam, a second fixing bolt, and a third fixing bolt; A second turbine box is provided on the crossbeam, and the second turbine box is connected to the second lead screw transmission. The bottom of the second lead screw passes through the crossbeam and is fixedly provided with a connecting flange. The lower bearing is adaptively connected to one end of the lifting pad through the first fixing screw, and the other end of the lifting pad is fixedly connected to the connecting flange through the second fixing screw. The side beam assembly is fixedly connected to the crossbeam through the third fixing bolt, and the pulley assembly is fixedly connected to the side beam assembly through the first fixing bolt.

7. The flue gas turbine rotor disassembly and assembly device according to claim 1, characterized in that: Also included is a level assembly, the level assembly including a bracket and a level; The level is fixed on the bracket, and the horizontal direction of the level is parallel to the axial direction of the rotor assembly.

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