Steam turbine rotor maintenance supporting device

Abstract

The utility model discloses a steam turbine rotor maintenance supporting device which comprises two sets of supporting mechanisms, and each set of supporting mechanism comprises a supporting frame, a lifting driving mechanism and a walking mechanism. The support frame comprises an upper support frame and a lower support frame, the upper support frame is provided with a slot position for placing a steam turbine rotor, and a vertical guide structure is arranged between the upper support frame and the lower support frame; the lifting driving mechanism is used for driving the upper supporting frame to ascend and descend. The walking mechanism comprises walking wheels, and the walking wheels are arranged at the bottom of the lower supporting frame. The maintenance supporting device can be used for supporting steam turbine rotors of different sizes, the universality is good, and the occupied space can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to a steam turbine rotor maintenance device, in particular to a steam turbine rotor maintenance support device. Background Art

[0002] A steam turbine is a rotary power machine that converts the energy of steam into mechanical work. It is mainly used as a prime mover for power generation, and can also directly drive various pumps, fans, compressors, and ship propellers. Currently, most steam turbines use burning fuel as a power source.

[0003] During steam turbine maintenance, the steam turbine rotor is hoisted out and placed on a support device for easy inspection. Existing support devices are relatively simple, similar to fixed brackets, and only perform a single supporting function. In actual use, steam turbine rotors of different sizes (including length and height) may require different support devices. Therefore, multiple sizes of support devices are required, which not only takes up a lot of space but also has limited versatility. Utility Model Content

[0004] The purpose of the present invention is to overcome the above-mentioned problems and provide a steam turbine rotor maintenance support device, which can be used to support steam turbine rotors of different sizes, has good versatility, and can greatly reduce the occupied space.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A steam turbine rotor maintenance support device includes two groups of support mechanisms, each group of support mechanisms includes a support frame, a lifting drive mechanism and a walking mechanism; the support frame includes an upper support frame and a lower support frame, the upper support frame is provided with a slot for placing the steam turbine rotor, and a vertical guide structure is provided between the upper support frame and the lower support frame; the lifting drive mechanism is used to drive the upper support frame to move up and down; the walking mechanism includes walking wheels, which are rotatably connected to the bottom of the lower support frame.

[0007] The working principle of the above steam turbine rotor maintenance support device is as follows:

[0008] During operation, the lower support frame is moved by the walking wheels according to the length of the steam turbine rotor, and the distance between the two sets of support mechanisms is adjusted to obtain a suitable support distance; according to the maximum diameter of the steam turbine rotor, the upper support frame is driven to move up and down by the lifting drive mechanism, so that the height of the slot of the upper support frame is slightly larger than the maximum diameter of the steam turbine rotor. This not only allows the steam turbine rotor to be placed, but also controls the placement height, avoiding the steam turbine rotor being positioned too high and affecting maintenance operations.

[0009] In a preferred embodiment of the present invention, the vertical guide structure includes a vertical guide rod and a vertical guide sleeve, the top of the vertical guide rod is fixedly connected to the upper support frame, and the vertical guide sleeve is fixedly arranged on the lower support frame.

[0010] In a preferred embodiment of the present invention, the lifting drive mechanism includes a lifting drive motor and a lifting transmission assembly, wherein the lifting drive motor is mounted on a lower support frame, and the lifting transmission assembly includes a lifting rack and a lifting gear. The top of the lifting rack is fixedly connected to the upper support frame, and the lifting gear is directly or indirectly connected to the lifting drive motor. With this structure, the lifting gear can drive the lifting rack and the upper support frame to move up and down under the drive of the lifting drive motor, thereby adjusting the support height to accommodate rotors of different diameters.

[0011] Furthermore, the lifting drive mechanism further includes a gearbox, which is provided with two output ends;

[0012] The lifting transmission assembly is provided with two groups of lifting gears, and the two groups of lifting gears are respectively connected to the two output ends of the gearbox, which can improve the stability of the transmission.

[0013] In a preferred embodiment of the present invention, the running wheels are provided in two groups, and each group of running wheels includes two running wheels.

[0014] In a preferred embodiment of the present invention, the travel mechanism further comprises a travel drive motor and a travel transmission assembly, wherein the travel drive motor is mounted on the lower support frame; the travel transmission assembly comprises a drive shaft, a drive belt, and pulleys, wherein two drive shafts are provided and are fixedly connected to two sets of travel wheels, respectively, and the drive shafts are rotatably connected to the bottom surface of the lower support frame; two pulleys are provided and are connected to one of the drive shafts and the travel drive motor, respectively, and the drive belt is connected between the two pulleys. Through the above structure, the travel drive motor can drive one set of travel wheels to rotate, thereby moving the entire support mechanism, and facilitating adjustment of the distance between the two sets of support mechanisms.

[0015] In a preferred embodiment of the present invention, the walking mechanism further comprises two parallel walking guide rails, and the walking wheels travel on the walking guide rails.

[0016] In a preferred embodiment of the present invention, one of the support mechanisms further includes a rotary drive mechanism for rotating the steam turbine rotor. The rotary drive mechanism includes a rotary drive motor and a rotary mounting plate. The rotary drive motor is mounted on an upper support frame. One end of the rotary mounting plate is indirectly or directly connected to the rotary drive motor, and the other end of the rotary mounting plate is fixedly connected to one end of the steam turbine rotor via bolts. With this structure, the rotary drive motor can drive the steam turbine rotor to rotate on the upper support frame, thereby facilitating maintenance of different parts of the steam turbine rotor.

[0017] Furthermore, the rotary drive motor is mounted on the upper support frame via a transverse sliding structure comprising a transverse guide rail and a transverse slider. The transverse guide rail is fixed to the upper support frame, its length parallel to the axis of the steam turbine rotor, and the transverse slider is indirectly connected to the rotary drive motor. This structure allows the lateral position of the rotary drive mechanism to be adjusted for connection to the steam turbine rotor.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The steam turbine rotor maintenance support device of the present invention can move the lower support frame through the walking wheels according to the length of the steam turbine rotor, adjust the distance between the two sets of support mechanisms, and thus obtain a suitable support distance. It is suitable for steam turbine rotors of different lengths.

[0020] 2. The utility model can drive the upper support frame to move up and down through the lifting drive mechanism according to the maximum diameter of the steam turbine rotor, so that the height of the slot of the upper support frame is slightly larger than the maximum diameter of the steam turbine rotor. In this way, not only can the steam turbine rotor be placed, but the placement height can also be controlled to avoid the steam turbine rotor being positioned too high and affecting maintenance operations. It is suitable for steam turbine rotors of different diameters, has good versatility, and can greatly reduce the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the steam turbine rotor maintenance support device of the present invention in use.

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of one set of support mechanisms of the present invention.

[0023] Figure 3 This is a front view of one set of support mechanisms of the present invention. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0025] See also Figure 1-3 The steam turbine rotor maintenance support device of this embodiment includes two groups of support mechanisms, each group of support mechanisms includes a support frame, a lifting drive mechanism and a walking mechanism; wherein, the support frame includes an upper support frame 1 and a lower support frame 2, the upper support frame 1 is provided with a slot 1-1 for placing the steam turbine rotor, and a vertical guide structure is provided between the upper support frame 1 and the lower support frame 2; the vertical guide structure includes a vertical guide rod 3 and a vertical guide sleeve 4, the top of the vertical guide rod 3 is fixedly connected to the upper support frame 1, and the vertical guide sleeve 4 is fixedly set on the lower support frame 2.

[0026] See also Figure 1-3 The lifting drive mechanism is used to drive the upper support frame 1 to move up and down. The lifting drive mechanism includes a lifting drive motor 5 and a lifting transmission assembly. The lifting drive motor 5 is installed on the lower support frame 2. The lifting transmission assembly includes a lifting rack 6 and a lifting gear 7. The top of the lifting rack 6 is fixedly connected to the upper support frame 1, and the lifting gear 7 is directly or indirectly connected to the lifting drive motor 5. Through the above structure, under the drive of the lifting drive motor 5, the lifting gear 7 can drive the lifting rack 6 and the upper support frame 1 to move up and down, thereby adjusting the support height to accommodate rotors of different diameters.

[0027] Furthermore, the lifting drive mechanism also includes a gearbox 8, which has two output ends; the lifting transmission assembly has two groups of lifting gears 7, which are respectively connected to the two output ends of the gearbox 8, which can improve the stability of the transmission.

[0028] See also Figure 1-3 The walking mechanism includes walking wheels 9, two parallel walking guide rails 10, a walking drive motor 11 and a walking transmission assembly, and the walking wheels 9 walk on the walking guide rails 10. There are two groups of walking wheels 9, and each group of walking wheels 9 includes two walking wheels 9.

[0029] Furthermore, the travel drive motor 11 is mounted on the lower support frame 2; the travel transmission assembly includes a drive shaft, a drive belt 12, and pulleys. Two drive shafts are provided, each fixedly connected to the two sets of travel wheels 9. The drive shafts are rotatably connected to the bottom surface of the lower support frame 2; two pulleys are provided, each connected to one of the drive shafts and the travel drive motor 11, with the drive belt 12 connected between the two pulleys. This structure allows the travel drive motor 11 to drive one set of travel wheels 9 to rotate, thereby moving the entire support mechanism and facilitating adjustment of the distance between the two sets of support mechanisms.

[0030] See also Figure 1-3 One set of support mechanisms also includes a rotary drive mechanism for rotating the steam turbine rotor. This rotary drive mechanism includes a rotary drive motor 13 and a rotary mounting plate 14. The rotary drive motor 13 is mounted on the upper support frame 1. One end of the rotary mounting plate 14 is indirectly or directly connected to the rotary drive motor 13, and the other end of the rotary mounting plate 14 is fixedly connected to one end of the steam turbine rotor via bolts. This structure allows the rotary drive motor 13 to drive the steam turbine rotor to rotate on the upper support frame 1, facilitating maintenance of different parts of the steam turbine rotor.

[0031] Furthermore, the rotary drive motor 13 is mounted on the upper support frame 1 via a transverse sliding structure comprising a transverse guide rail and a transverse slider. The transverse guide rail is fixed to the upper support frame 1, with its length parallel to the axis of the steam turbine rotor. The transverse slider is indirectly connected to the rotary drive motor 13. This structure allows the lateral position of the rotary drive mechanism to be adjusted for connection to the steam turbine rotor.

[0032] See also Figure 1-3 The working principle of the steam turbine rotor maintenance support device of this embodiment is as follows:

[0033] During operation, according to the length of the steam turbine rotor, the lower support frame 2 is moved by the walking wheels 9, and the distance between the two sets of support mechanisms is adjusted to obtain a suitable support distance; according to the maximum diameter of the steam turbine rotor, the upper support frame 1 is driven to move up and down by the lifting drive mechanism, so that the height of the slot 1-1 of the upper support frame 1 is slightly larger than the maximum diameter of the steam turbine rotor. In this way, not only the steam turbine rotor can be placed, but also the placement height can be controlled to avoid the steam turbine rotor being positioned too high and affecting maintenance operations.

[0034] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A steam turbine rotor maintenance support device, comprising two sets of support mechanisms, characterized in that: Each set of support mechanisms includes a support frame, a lifting drive mechanism and a walking mechanism; the support frame includes an upper support frame and a lower support frame, the upper support frame is provided with a slot for placing the steam turbine rotor, and a vertical guide structure is provided between the upper support frame and the lower support frame; the lifting drive mechanism is used to drive the upper support frame to move up and down; the walking mechanism includes walking wheels, and the walking wheels are arranged at the bottom of the lower support frame.

2. The steam turbine rotor maintenance support device according to claim 1, characterized in that: The vertical guide structure includes a vertical guide rod and a vertical guide sleeve. The top of the vertical guide rod is fixedly connected to the upper support frame, and the vertical guide sleeve is fixedly arranged on the lower support frame.

3. The steam turbine rotor maintenance support device according to claim 1, characterized in that: The lifting drive mechanism includes a lifting drive motor and a lifting transmission assembly. The lifting drive motor is arranged on the lower support frame. The lifting transmission assembly includes a lifting rack and a lifting gear. The top of the lifting rack is fixedly connected to the upper support frame. The lifting gear is directly or indirectly connected to the lifting drive motor power.

4. The steam turbine rotor maintenance support device according to claim 3, characterized in that: The lifting drive mechanism further includes a gearbox, which is provided with two output ends; The lifting transmission assembly is provided with two groups of lifting gears, and the two groups of lifting gears are respectively connected to the two output ends of the gearbox.

5. The steam turbine rotor maintenance support device according to claim 1, characterized in that: The running wheels are provided in two groups, and each group of running wheels includes two running wheels.

6. The steam turbine rotor maintenance support device according to claim 5, characterized in that: The walking mechanism also includes a walking drive motor and a walking transmission assembly, and the walking drive motor is arranged on the lower support frame; the walking transmission assembly includes a transmission shaft, a transmission belt and a pulley, and the transmission shaft is provided with two and is fixedly connected to two sets of walking wheels respectively, and the transmission shaft is rotatably connected to the bottom surface of the lower support frame; the pulley is provided with two and is respectively connected to one of the transmission shafts and the walking drive motor, and the transmission belt is connected between the two pulleys.

7. The steam turbine rotor maintenance support device according to claim 5, characterized in that: The walking mechanism further comprises two walking guide rails arranged in parallel, and the walking wheels run on the walking guide rails.

8. The steam turbine rotor maintenance support device according to claim 1, characterized in that: One of the support mechanisms also includes a rotary drive mechanism for driving the steam turbine rotor to rotate, the rotary drive mechanism including a rotary drive motor and a rotary mounting disk, the rotary drive motor being arranged on the upper support frame, one end of the rotary mounting disk being indirectly or directly connected to the rotary drive motor power, and the other end of the rotary mounting disk being fixedly connected to one end portion of the steam turbine rotor by bolts.

9. The steam turbine rotor maintenance support device according to claim 8, characterized in that: The rotary drive motor is arranged on the upper support frame through a transverse sliding structure. The transverse sliding structure includes a transverse guide rail and a transverse slider. The transverse guide rail is fixedly arranged on the upper support frame. The length direction of the transverse guide rail is parallel to the axis of the steam turbine rotor. The transverse slider is indirectly connected to the rotary drive motor.

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