Auxiliary device for fault processing of turboset

Abstract

The utility model relates to the technical field of steam turbine maintenance, in particular to an auxiliary device for processing faults of a steam turbine set. The device comprises a bottom plate, a plurality of sleeves are arranged on the upper side of the bottom plate at intervals, a top plate is arranged on the upper side of the bottom plate at intervals, sliding rods with the same number as the sleeves are arranged on the lower side of the top plate, and each sliding rod is slidably connected with one sleeve; the two first connecting rods are arranged at intervals in the axial direction of the rotating shaft, the other end of each first connecting rod is hinged to a second connecting rod, the other end of each second connecting rod is hinged to the top plate, and the worm gear is arranged on the rotating shaft in a sleeving mode and located between the two first connecting rods. A worm is connected to an output shaft of the motor and used for being matched with the worm gear. When the motor works, lifting of the top plate can be achieved, and the distance between the two shaft fixing parts is adjusted according to the actual length of the steam turbine shaft. The device is convenient to operate and high in safety, and adopts one motor, so that the energy efficiency is greatly improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine maintenance, in particular to an auxiliary device for handling steam turbine unit faults. Background Art

[0002] A steam turbine is a generator set driven by steam or gas. It generates electricity by injecting high-temperature and high-pressure steam or gas onto the turbine to drive the turbine to rotate, and then transmits the rotational power to the generator through the shaft. Steam turbines are commonly used in power plants and industrial fields and are a common power generation equipment. Steam turbines are complex mechanical systems. Once a failure occurs, multiple components and systems may be involved. When inspecting or repairing a steam turbine, it needs to be hoisted, which is less safe and inconvenient to operate. Utility Model Content

[0003] The utility model aims to provide an auxiliary device for handling faults of a steam turbine unit, which can fix the steam turbine and has convenient operation and high safety.

[0004] In order to achieve the above-mentioned object, in a first aspect, the utility model provides an auxiliary device for handling a fault of a steam turbine unit, comprising:

[0005] A bottom plate, a plurality of sleeves are arranged at intervals on the upper side thereof;

[0006] A top plate, a plurality of sliding bars are spaced apart at the lower side thereof, the number of the sliding bars being the same as the number of the sleeves, and each sliding bar being slidably connected to a sleeve;

[0007] Two shaft fixing parts are arranged horizontally and spaced apart on the top plate, and are used to fix the steam turbine shaft, and each shaft fixing part is slidably connected to the top plate respectively;

[0008] A rotating shaft is rotatably fixed to the bottom plate;

[0009] Two first connecting rods, one end of which is connected to the rotating shaft and can rotate with the rotating shaft, the two first connecting rods are arranged at intervals along the axial direction of the rotating shaft, the other end of each first connecting rod is hinged to a second connecting rod, and the other end of the second connecting rod is hinged to the top plate;

[0010] A worm gear is sleeved on the rotating shaft and located between the two first connecting rods;

[0011] A motor, the output shaft of which is connected to a worm for cooperating with a worm wheel;

[0012] When the motor is working, the rotating shaft rotates to change the angle between the second connecting rod and the first connecting rod, thereby adjusting the distance between the top plate and the bottom plate.

[0013] Optionally, the two shaft fixing parts are slidably connected to the top plate via a sliding device, the sliding device includes a sliding guide part and two sliders, the two sliders can slide along the sliding guide parts respectively, and each shaft fixing part is fixed on a slider and can move with the slider.

[0014] Optionally, the sliding guide portion is two parallel U-shaped rods arranged at intervals, the ends of the U-shaped rods are connected to the top plate, the horizontal section of the U-shaped rod is arranged along the sliding direction of the slider, and the two sides of the slider are mounted on the horizontal section and can slide along the horizontal section.

[0015] Optionally, the sliding guide portion is a slide rail, and the slider can slide along the slide rail.

[0016] Optionally, the auxiliary device for handling turbine unit faults also includes a bidirectional screw, which is rotatably fixed on the upper side of the top plate, and two sliders are respectively threadedly connected to the bidirectional screw. When the bidirectional screw is rotated, the two sliders move toward or away from each other.

[0017] Optionally, the shaft fixing portion includes:

[0018] A fixing ring, one side of which is provided with a first threaded block;

[0019] The adjusting ring is located on one side of the fixing ring provided with the first threaded block and is coaxially arranged with the fixing ring. The adjusting ring is also provided with a second threaded block, and the adjusting ring is relatively rotatably connected with the second threaded block. Three openings are provided at intervals along the circumferential direction on the outer peripheral side of the adjusting ring, and the three openings penetrate the ring body of the adjusting ring along the radial direction of the adjusting ring.

[0020] An adjusting screw, threadedly connected to the first thread block and the second thread block;

[0021] Three clamping plates, each clamping plate is sleeved with a limit frame, the clamping plate can move along the sleeve direction of the limit frame, each limit frame is respectively located in an opening, and is rotatably connected to the adjustment ring through a rotating shaft, one end of the clamping plate is rotatably connected to the fixed ring through the rotating shaft, and the other end extends into the adjustment ring;

[0022] The adjusting screw is rotated, and the second threaded block moves along the axial direction of the adjusting screw, driving the adjusting ring to rotate, thereby adjusting the angle of the clamping plate and the length of the clamping plate extending into the adjusting ring.

[0023] Optionally, a soft contact portion is provided on the clamping surface of the clamping plate.

[0024] Optionally, the soft contact portion is a rubber pad or a plurality of rubber balls arranged at intervals.

[0025] Optionally, the number of sleeves is four.

[0026] Optionally, the motor is arranged inside the base plate.

[0027] The above technical solution of the utility model has the following advantages:

[0028] The utility model provides an auxiliary device for handling faults of a steam turbine unit, comprising a bottom plate, a plurality of sleeves arranged at intervals on the upper side of the bottom plate, a top plate arranged at intervals on the upper side of the bottom plate, a plurality of sliding rods arranged on the lower side of the top plate, the number of the sliding rods being the same as the number of the sleeves, each sliding rod being slidably connected to one of the sleeves, one end of two first connecting rods being connected to a rotating shaft and being able to rotate with the rotating shaft, the two first connecting rods being arranged at intervals along the axial direction of the rotating shaft, a second connecting rod being hinged to the other end of each first connecting rod, and the other end of the second connecting rod being hinged to the top plate, so that the top plate can remain stable during the process of the first connecting rod and the second connecting rod angle changing (top plate lifting and lowering). The worm gear is sleeved on the rotating shaft and located between the two first connecting rods. A worm is connected to the output shaft of the motor for cooperating with the worm gear. When the motor is working, the lifting and lowering of the top plate can be realized, and the spacing between the two shaft fixing parts is adjusted according to the actual length of the steam turbine shaft. The device is easy to operate and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings of the present invention are provided for illustrative purposes only, and the proportions and quantities of the components in the drawings may not necessarily be consistent with the actual product.

[0030] Figure 1 It is a structural schematic diagram of an auxiliary device for handling a steam turbine unit fault in an embodiment of the utility model;

[0031] Figure 2 yes Figure 1 Schematic diagram of the disassembled state of the bottom plate and top plate of the auxiliary device for troubleshooting of the steam turbine unit;

[0032] Figure 3 This is a structural schematic diagram of a shaft fixing portion in an embodiment of the utility model;

[0033] Figure 4 yes Figure 3 Schematic diagram of the exploded state of the middle shaft fixing part.

[0034] In the figure:

[0035] 1. Bottom plate; 2. Sleeve; 3. Top plate; 4. Slide rod; 5. First fixed seat; 6. Rotating shaft; 7. Worm gear; 8. Motor; 9. Worm; 10. First connecting rod; 11. Second connecting rod; 12. Connecting block; 13. Sliding guide; 14. Second fixed seat; 15. Bidirectional screw; 16. Sliding block; 17. Fixing ring; 18. First threaded block; 19. Adjusting screw; 20. Hand-held part; 21. Second threaded block; 22. Adjusting ring; 23. Limiting frame; 24. Clamp; 25. Soft contact part. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Reference Figure 1 and Figure 2 The utility model provides an auxiliary device for handling faults of a steam turbine unit, comprising a bottom plate 1, a plurality of sleeves 2 are arranged at intervals on the upper side of the bottom plate 1, a top plate 3 is arranged at intervals on the upper side of the bottom plate 1, a plurality of slide bars 4 are arranged at the lower side of the top plate 3, the number of the slide bars 4 is the same as the number of the sleeves 2, each slide bar 4 is slidably connected to one of the sleeves 2, and two first fixing seats 5 are arranged at intervals on the upper side of the bottom plate 1 for rotatably mounting a rotating shaft 6. For example, both ends of the rotating shaft 6 are rotatably connected to the first fixing seats 5 through bearings. One end of two first connecting rods 10 is connected to the rotating shaft 6 and can rotate with the rotating shaft 6, the two first connecting rods 10 are arranged at intervals along the axial direction of the rotating shaft 6, the other end of each first connecting rod 10 is hinged to a second connecting rod 11, and the other end of the second connecting rod 11 is hinged to the top plate 3, so that the top plate 3 can remain stable during the process of the angle change of the first connecting rod 10 and the second connecting rod 11 (top plate lifting and lowering). The worm gear 7 is sleeved on the rotating shaft 6 and is located between the two first connecting rods 10. A worm 9 is connected to the output shaft of the motor 8 for cooperating with the worm wheel 7 .

[0038] When the motor 8 is working, the rotating shaft 6 rotates to change the angle between the second connecting rod 11 and the first connecting rod 10, and adjust the distance between the top plate 3 and the bottom plate 1. The auxiliary device can conveniently install and fix the steam turbine on the auxiliary device, and can conveniently adjust the steam turbine to a suitable height after the installation is completed, which is convenient for maintenance, easy to operate, and highly safe. The auxiliary device in this embodiment uses only one motor, which greatly improves energy efficiency and reduces costs compared to using a hydraulic system, especially multiple hydraulic systems.

[0039] When the device is used, it is only necessary to start the motor 8 to drive the worm 9 to rotate. Due to the meshing relationship between the worm 9 and the worm wheel 7, the worm wheel 7 rotates, which in turn drives the rotating shaft 6 to rotate, thereby driving the first connecting rod 10 to rotate accordingly, and through the linkage action of the second connecting rod 11, the top plate 3 is pushed up or moved down, thereby realizing the adjustment of the height of the top plate 3. In addition, the staff can adjust the distance between the two shaft fixing parts according to the actual length of the turbine shaft.

[0040] In one example, the other end of the second connecting rod 11 is connected to the top plate 3 via a connecting block 12 . Specifically, the second connecting rod 11 is hinged to the connecting block 12 , and the connecting block 12 is fixed to the lower side of the top plate 3 .

[0041] In one example, the two axis fixing parts are slidably connected to the top plate 3 through a sliding device, the sliding device includes a sliding guide part 13 and two sliders 16, the two sliders 16 can slide along the sliding guide part 13 respectively, each axis fixing part is fixed on a slider 16 and can move with the slider 16.

[0042] In one example, see Figure 1 As shown, the sliding guide part 13 is two parallel U-shaped rods arranged at intervals, the ends of the U-shaped rods (two vertical sections) are connected to the top plate 3, the horizontal section of the U-shaped rod is arranged along the sliding direction of the slider 16, and the two sides of the slider 16 are mounted on the horizontal section and can slide along the horizontal section, which plays a role in limiting and guiding the slider 16.

[0043] In another example, the sliding guide portion 13 is a slide rail, and the slider 16 cooperates with the slide rail and can slide along the slide rail.

[0044] For some examples, see Figure 1 As shown, the auxiliary device also includes a bidirectional screw 15, which is rotatably fixed on the upper side of the top plate 3, and two sliders 16 are respectively threadedly connected to the bidirectional screw 15. When the bidirectional screw 15 is rotated, the two sliders 16 move toward or away from each other. In a specific example, the bidirectional screw 15 is installed on the top plate 3 through two second fixing seats 14, and a bearing is arranged between the bidirectional screw 15 and the second fixing seats 14. Preferably, a handle is provided at one end of the bidirectional screw 15 for easy gripping and rotation.

[0045] The bidirectional screw 15 is rotated so that the two sliders 16 slide toward the center or away from the center simultaneously along the bidirectional screw 15, thereby changing the distance between the fixing rings 17 to ensure that turbine shafts of different lengths can be fixed.

[0046] In order to enable the shaft fixing portion to match the turbine shafts of different shaft diameters, in one example, see Figure 3 and Figure 4As shown, the shaft fixing part includes a fixing ring 17, an adjusting ring 22, an adjusting screw 19 and three clamping plates 24. The adjusting ring 22 is located on one side of the fixing ring 17 and is coaxially arranged with the fixing ring 17. A first threaded block 18 is provided on the fixing ring 17, and a second threaded block 21 is provided on one side of the adjusting ring 22. The adjusting ring 22 is rotatably connected to the second threaded block 21 relative to the second threaded block 21. For example, a connecting piece extends outward from the adjusting ring 22, and the second threaded block 21 is rotatably connected to the connecting piece via a rotating shaft. The adjusting screw 19 is threadedly connected with the first threaded block 18 and the second threaded block 21. The adjusting ring 22 is provided with three openings in the circumference (radially penetrating the adjusting ring 22). A limit frame 23 is respectively sleeved on the three clamping plates 24. The clamping plates 24 can move along the sleeve direction of the limit frame 23. Each limit frame 23 is respectively located in an opening and is rotatably connected to the adjusting ring 22 through a rotating shaft. One end of the clamping plate 24 is rotatably connected to the fixing ring 17 through the rotating shaft, and the other end extends into the adjusting ring 22 through the opening through the limit frame 23. By rotating the adjusting screw 19, the second threaded block 21 moves along the axial direction of the adjusting screw 19, driving the adjusting ring 22 to rotate around the concentric axis of the adjusting ring 22 and the fixed ring 17. During the rotation of the adjusting ring 22, the adjusting ring 22 rotates relative to the second threaded block 21 to adjust the orientation to adapt to the displacement change of the second threaded block 21. The rotation of the adjusting ring 22 drives the three clamping plates to change, thereby achieving the purpose of adjusting the angle of the clamping plate 24 and the length of the clamping plate 24 extending into the adjusting ring 22, thereby realizing the clamping and fixation of the turbine shaft with different shaft diameters.

[0047] In order to improve the stability of the shaft fixing part fixing the turbine shaft, in one example, a soft contact part 25 is provided on the clamping surface (the side facing the turbine shaft) of the clamping plate 24, which can increase the contact area and friction with the turbine shaft, and at the same time provide protection for the turbine shaft to avoid damage to the turbine shaft. In some specific examples, the soft contact part 25 is a rubber pad or a plurality of rubber balls arranged at intervals.

[0048] Reference Figure 3 and Figure 4In one example, one end of the adjusting screw 19 is fixedly connected to a hand-held part 20. After the turbine shaft is placed inside the fixing ring 17, the adjusting screw 19 is then twisted by the hand-held part 20 to drive the second threaded block 21 to move along the axial direction of the adjusting screw 19. In this process, the movement of the second threaded block 21 drives the adjusting ring 22 to rotate. The rotation of the adjusting ring 22 further drives the clamping plate 24 to deflect through the limit frame 23. Finally, the clamping plate 24 is attached to the outer wall of the turbine shaft to fix the turbine shaft. First, the rotation of the adjusting screw 19 is controlled by the hand-held part 20, making the entire fixing process simple and convenient. Secondly, the fitting design of the soft contact part 25 ensures the stability and safety of the turbine shaft during the fixing process. In addition, due to the synergistic effect of the fixing ring 17 and the adjusting screw 19, the device can adapt to turbine shafts of different diameters and has strong versatility.

[0049] The structure of the shaft fixing part can realize stepless adjustment of the deflection of the clamping plate 24, so that the whole system can be adjusted very finely while maintaining a compact structure. In addition, multiple actions can be achieved by rotating a control element, which reduces the complexity of operation for the operator, increases the efficiency and safety of the operation, and is easy to operate.

[0050] In one example, there are four sleeves 2 distributed at the four corners of the bottom plate 1 , and cooperate with the slide rod 4 to further ensure the stability of the top plate 3 during the lifting process.

[0051] In order to reduce the size of the device, in one example, at least a portion of the motor 8 is disposed inside the base plate 1 .

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that not every embodiment contains only one independent technical solution. In the absence of a conflict of solutions, the various technical features mentioned in each embodiment can be combined in any way to form other implementation methods that can be understood by those skilled in the art.

[0053] In addition, without departing from the scope of the present invention, the technical solutions described in the aforementioned embodiments may be modified, or some of the technical features may be replaced by equivalents, without causing the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An auxiliary device for handling steam turbine unit faults, characterized in that: include: A bottom plate, a plurality of sleeves are arranged at intervals on the upper side thereof; A top plate, a plurality of sliding bars spaced at its lower side, the number of the sliding bars being the same as the number of the sleeves, and each of the sliding bars being slidably connected to one of the sleeves; Two shaft fixing parts are arranged horizontally and spaced apart on the top plate, and are used to fix the steam turbine shaft, and each of the shaft fixing parts is slidably connected to the top plate respectively; A rotating shaft, rotatably fixed to the bottom plate; Two first connecting rods, one end of which is connected to the rotating shaft and can rotate with the rotating shaft, the two first connecting rods are arranged at intervals along the axial direction of the rotating shaft, the other end of each of the first connecting rods is hinged to a second connecting rod, and the other end of the second connecting rod is hinged to the top plate; A worm gear, sleeved on the rotating shaft and located between the two first connecting rods; A motor, the output shaft of which is connected to a worm for cooperating with the worm wheel; When the motor is working, the rotating shaft rotates to change the angle between the second connecting rod and the first connecting rod, thereby adjusting the distance between the top plate and the bottom plate.

2. The auxiliary device for handling steam turbine unit faults according to claim 1, characterized in that: The two shaft fixing parts are slidably connected to the top plate through a sliding device, and the sliding device includes a sliding guide part and two sliders. The two sliders can slide along the sliding guide parts respectively, and each shaft fixing part is fixed on one slider and can move with the slider.

3. The auxiliary device for handling steam turbine unit faults according to claim 2, characterized in that: The sliding guide part is two parallel U-shaped rods arranged at intervals, the ends of the U-shaped rods are connected to the top plate, the horizontal sections of the U-shaped rods are arranged along the sliding direction of the slider, and the two sides of the slider are mounted on the horizontal sections and can slide along the horizontal sections.

4. The auxiliary device for handling steam turbine unit faults according to claim 2, characterized in that: The sliding guide portion is a slide rail, and the slider can slide along the slide rail.

5. The auxiliary device for handling steam turbine unit faults according to any one of claims 2 to 4, characterized in that: It also includes a bidirectional screw, which is rotatably fixed on the upper side of the top plate. The two sliders are respectively threadedly connected to the bidirectional screw. When the bidirectional screw is rotated, the two sliders move toward or away from each other.

6. The auxiliary device for handling steam turbine unit faults according to claim 1, characterized in that: The shaft fixing portion comprises: A fixing ring, one side of which is provided with a first threaded block; An adjusting ring, located on one side of the fixing ring provided with the first threaded block, and coaxially arranged with the fixing ring, the adjusting ring is also provided with a second threaded block, and the adjusting ring is relatively rotatably connected with the second threaded block, and three openings are provided at intervals along the circumferential direction on the outer circumference of the adjusting ring, and the three openings penetrate the ring body of the adjusting ring along the radial direction of the adjusting ring; an adjusting screw, threadably connected to the first threaded block and the second threaded block; Three clamping plates, each of which is sleeved with a limit frame, and the clamping plates can move along the sleeve direction of the limit frame, each of which is located in one of the openings and is rotatably connected to the adjustment ring through a rotation shaft, one end of the clamping plate is rotatably connected to the fixed ring through the rotation shaft, and the other end extends into the adjustment ring; The adjusting screw is rotated, and the second threaded block moves along the axial direction of the adjusting screw, driving the adjusting ring to rotate, thereby adjusting the angle of the clamping plate and the length of the clamping plate extending into the adjusting ring.

7. The auxiliary device for handling steam turbine unit faults according to claim 6, characterized in that: A soft contact portion is provided on the clamping surface of the clamping plate.

8. The auxiliary device for handling steam turbine unit faults according to claim 7, characterized in that: The soft contact part is a rubber pad or a plurality of rubber balls arranged at intervals.

9. The auxiliary device for handling steam turbine unit faults according to claim 1, characterized in that: The number of the sleeves is four.

10. The auxiliary device for handling steam turbine unit faults according to claim 1, characterized in that: The motor is arranged inside the bottom plate.

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