Hoisting equipment for overhauling steam turbine of thermal power plant

Abstract

The utility model discloses a thermal power plant steam turbine maintenance hoisting device, which relates to the technical field of steam turbine maintenance, and comprises a door-shaped mounting rack, the left and right parts of the upper end of the mounting rack are movably connected with a hoisting rope adjusting assembly, and the left and right positions of the bottom of the hoisting rope adjusting assembly are fixedly provided with hoisting adaptation assemblies. According to the hoisting equipment for overhauling the steam turbine of the thermal power plant, disclosed by the utility model, the two rotating columns can be driven to rotate in the same direction by utilizing the same-direction rotating mechanism through the hoisting rope adjusting assembly, so that the two hoisting ropes are wound or unwound, and the purpose of hoisting the steam turbine is achieved. And secondly, the distance between the two movable frames can be adjusted through the distance adjusting mechanism, and the hoisting device can adapt to and hoist turbines with different lengths. The lengths of the two steel ropes can be adjusted according to different shapes of the steam turbine through the hoisting adaptation assembly, the shorter section of steel rope is connected with the protruding position of the surface of the steam turbine through a hoisting ring, and the longer section of steel rope is connected with the concave position of the surface of the steam turbine through a hoisting ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steam turbine overhauling technical field, especially a steam turbine overhauling hoisting equipment of thermal power plant. BACKGROUND

[0002] Steam turbine is also called steam turbine engine, which is a kind of rotary steam power device. High-temperature and high-pressure steam is injected into the blade after passing through the fixed nozzle to become accelerated airflow, which makes the rotor with blade row rotate and does work to the outside. When the steam turbine is overhauled, it needs to be lifted due to its large size, and hoisting equipment can be used. However, the hanging rope connecting hooks of common hoisting equipment are fixed in position, which is not convenient for adjusting according to the length of different steam turbines. If the spacing between the hanging rope connecting hooks is too small, the hanging rope will rub on the steam turbine parts, which can easily break and cause safety accidents, bringing certain adverse effects to the use process of people.

[0003] Chinese patent document CN220098261 U discloses a steam turbine overhauling hoisting equipment for thermal power plant, which has a hanging rope connecting hook detachably connected to the front end of the adjusting structure. The steam turbine overhauling hoisting equipment for thermal power plant can adjust the spacing between the two groups of hanging rope connecting hooks by using the adjusting structure. The staff only needs to start the control motor to drive the rotating screw rod to rotate inside the sliding groove. The threaded hole and the rotating screw rod are connected by threads, which controls the movement of the adjusting block. The outer wall of the rotating screw rod is engraved with two groups of threads in different directions, which controls the movement of the two groups of adjusting blocks inward or outward, and adjusts the spacing between the two groups of adjusting blocks.

[0004] The existing technology has the following problems:

[0005] Although the above-mentioned device can adjust the spacing between the two hanging rope connecting hooks, it does not include a lifting mechanism itself and needs to set up an external electric lifting mechanism to act on the connecting chain for hoisting the steam turbine. However, the additional setting part can increase the testing and maintenance cost and has general practicability. Secondly, when the above-mentioned device is used for different shapes of steam turbines, the two hanging rope connecting hooks need to be connected to steel ropes of different lengths. Different steam turbines need steel ropes of different lengths, which can increase the processing cost and has low applicability. UTILITY MODEL CONTENT

[0006] The utility model provides a steam turbine overhauling hoisting equipment for thermal power plant to solve the problems in the above-mentioned background technology.

[0007] To solve the above-mentioned technical problems, the utility model adopts the following technical scheme:

[0008] The utility model provides a kind of steam turbine maintenance hoisting equipment of thermal power plant, including door type mounting frame, the upper end left and right parts of the mounting frame are movably connected with lifting rope adjusting assembly, lifting rope adjusting assembly bottom left and right position fixed mounting has hoisting adaptation assembly;

[0009] The lifting rope adjusting assembly includes two rotating columns, the inner walls of the upper ends of the mounting frame are movably connected to the outer walls of the two rotating columns, same direction rotating mechanisms are fixedly installed on the outer wall bottoms of the two rotating columns, two rotating column outer wall top is fixedly sleeved with winding rope disc, two winding rope discs are wound with lifting ropes, the upper ends of the mounting frame are provided with sliding grooves, two moving frames are slidably connected to the inner walls of the two sliding grooves, the inner walls of the top portions of the two moving frames are movably sleeved with the outer walls of the two lifting ropes away from the two rotating columns, and distance adjusting mechanisms are movably connected to the rear sides of the two moving frames.

[0010] The hoisting adaptation assembly includes two fixed boxes, one end of each of the two lifting ropes away from the two moving frames passes through the sliding grooves and is fixedly connected to the upper middle portions of the two fixed boxes, rotating shafts are rotatably connected to the inner walls of the left and right portions of the two fixed boxes, gears are fixedly sleeved with the outer walls of the two rotating shafts away from each other and penetrating through the sides of the two fixed boxes away from each other, steel ropes are wound around the outer wall middle portions of the two rotating shafts, and lifting rings are fixedly installed at the ends of the two steel ropes away from the two rotating shafts and penetrating through the bottoms of the two fixed boxes.

[0011] Preferably, the same direction rotating mechanism includes two gears one, the inner walls of the two gears one are fixedly connected to the outer wall bottoms of the two rotating columns, a motor one is fixedly installed at the middle position of the inner wall top portion of the mounting frame, a gear two is fixedly sleeved with the output end of the motor one, and the outer surfaces of the two gears one are engaged with the outer surface of the gear two.

[0012] Preferably, the distance adjusting mechanism includes a motor two, a fixed frame is fixedly installed at the rear side of the motor two, the front end of the fixed frame is fixedly connected to the rear right portion of the mounting frame, a drive gear is fixedly sleeved with the output end of the motor two, and racks are slidably connected to the left and right positions of the top portion of the rear side of the mounting frame, the two racks are oppositely arranged, and the opposite sides of the two racks are engaged with the outer surface of the drive gear.

[0013] Preferably, the sides of the two racks away from each other are fixedly connected to the rear sides of the two moving frames.

[0014] Preferably, the ends of the two racks away from each other are fixedly installed with slide rods, the outer wall of the slide rod located at the right portion is slidably connected to the inner wall of the rear position of the right portion of the mounting frame, and the outer wall of the slide rod located at the left portion is slidably connected to the inner wall of the rear position of the left portion of the upper end of the mounting frame.

[0015] Preferably, the clamping mechanism comprises four guide rods, the opposite ends of four left and right adjacent guide rods are fixedly connected with the front and rear positions of the two sides of the fixed box away from each other, the outer walls of four front and rear adjacent guide rods are slidably connected with the inner toothed discs, the inner walls of the two inner toothed discs are clamped with the outer surfaces of the two gears, the outer wall top of the two inner toothed discs is fixedly installed with a pull rod, and the outer walls of the four left and right adjacent guide rods are movably sleeved with elastic members on the sides away from each other.

[0016] Preferably, the two rotating shafts are fixedly installed with rotating discs at the ends away from each other.

[0017] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0018] 1. The steam turbine maintenance hoisting equipment for thermal power plants provided by the present application can drive two rotating columns to rotate in the same direction by the cooperation between the rotating column, the same direction rotating mechanism, the rope winding disc, the lifting rope, the moving frame and the distance adjusting mechanism, so as to realize the winding / releasing of the two lifting ropes and achieve the purpose of hoisting the steam turbine. The present application does not need external electric driving structure, saves testing and matching time and has strong practicability. In addition, the distance adjusting mechanism can adjust the distance between the two moving frames, so that the bottoms of the two lifting ropes are located at different positions due to the movement of the moving frames, which can adapt to and hoist steam turbines with different lengths and has strong adaptability.

[0019] 2. The steam turbine maintenance hoisting equipment for thermal power plants provided by the present application can adjust the lengths of the two steel ropes according to the different shapes of the steam turbine by the cooperation between the fixed box, the rotating shaft, the gear, the steel rope, the lifting ring, the clamping mechanism and the rotating disc, adjust the two clamping mechanisms in sequence, drive the rotating shaft to rotate by the rotating disc when the corresponding two gears are in the fixed state in sequence, thereby complete the winding / releasing of the steel rope, connect the shorter steel rope with the position of the steam turbine surface protrusion by the lifting ring, connect the longer steel rope with the position of the steam turbine surface recess by the lifting ring, improve the overall applicability of the equipment, and do not need to process different steel ropes when maintaining different steam turbines, thereby reducing the processing cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an overall front view structural schematic diagram of the present application;

[0021] Figure 2 It is an overall rear view structural schematic diagram of the present application;

[0022] Figure 3 It is an overall sectional view structural schematic diagram of the present application;

[0023] Figure 4 It is a lifting rope adjusting assembly structural schematic diagram of the present application;

[0024] Figure 5 It is the structure schematic drawing of the hoisting adaptive assembly of the utility model (one);

[0025] Figure 6 It is the structure schematic drawing of the hoisting adaptive assembly of the utility model (two).

[0026] In the drawing: 1, mounting frame;2, hoisting rope adjusting assembly;3, hoisting adaptive assembly;21, rotating column;22, same direction rotating mechanism;23, rope winding disc;24, hoisting rope;25, sliding groove;26, moving frame;27, spacing adjusting mechanism;221, gear one;222, motor one;223, gear two;271, motor two;272, driving gear;273, rack;274, sliding rod;31, fixed box;32, rotating shaft;33, gear;34, steel rope;35, lifting ring;36, clamping mechanism;37, rotating disc;361, guide rod;362, inner tooth disc;363, pull rod;364, elastic member. DETAILED DESCRIPTION

[0027] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0028] As Figures 1-5 shown, a kind of thermal power plant steam turbine overhaul hoisting equipment, including door type mounting frame 1, the upper end left and right parts of mounting frame 1 are movably connected with hoisting rope adjusting assembly 2, hoisting rope adjusting assembly 2 bottom left and right position fixed installation has hoisting adaptive assembly 3;

[0029] Hoisting rope adjusting assembly 2 includes two rotating columns 21, the outer wall bottom of two rotating columns 21 is rotatably connected with the inner wall of the upper end left and right parts of mounting frame 1, the outer wall bottom of two rotating columns 21 is fixedly installed with same direction rotating mechanism 22, the outer wall top of two rotating columns 21 is fixedly sleeved with rope winding disc 23, the outer wall of two rope winding discs 23 is wound with hoisting rope 24, the upper end left and right parts of mounting frame 1 are all provided with sliding groove 25, the inner wall of two sliding grooves 25 is slidably connected with moving frame 26, the inner wall of the top of two moving frames 26 is movably sleeved with two hoisting ropes 24 away from the outer wall of two rotating columns 21, the rear side of two moving frames 26 is movably connected with spacing adjusting mechanism 27;

[0030] The lifting adaptation component 3 includes two fixed boxes 31, and the ends of the two lifting ropes 24 away from the two movable frames 26 pass through the slide groove 25 and are fixedly connected to the middle of the upper ends of the two fixed boxes 31. The left and right parts of the inner walls of the two fixed boxes 31 are rotatably connected with the rotating shaft 32. The sides of the outer walls of the two rotating shafts 32 away from each other pass through the sides of the two fixed boxes 31 away from each other and are fixedly sleeved with gears 33. The middle parts of the outer walls of the two rotating shafts 32 are wrapped with steel ropes 34. The ends of the two steel ropes 34 away from the two rotating shafts 32 pass through the bottoms of the two fixed boxes 31 and are fixedly installed with lifting rings 35. The sides of the two fixed boxes 31 away from each other are movably connected with a locking mechanism 36.

[0031] The rope adjustment assembly 2 utilizes a co-rotating mechanism 22 to drive the two rotating columns 21 to rotate in the same direction, allowing the two ropes 24 to be retracted and lowered, achieving the purpose of hoisting the steam turbine. This eliminates the need for an external electric drive structure, saving testing and matching time and enhancing practicality. Furthermore, a spacing adjustment mechanism 27 adjusts the distance between the two movable frames 26, allowing the bottoms of the two ropes 24 to be positioned differently due to the movement of the movable frames 26. This allows for the hoisting of steam turbines of varying lengths, demonstrating its high adaptability. By hoisting the adaptation component 3, the lengths of the two steel ropes 34 can be adjusted according to the different shapes of the steam turbine. The two locking mechanisms 36 are adjusted in sequence so that the corresponding two gears 33 can be released from the fixed state in sequence. The turntable 37 can be used to drive the rotating shaft 32 to rotate, thereby completing the winding / lowering of the steel rope 34. The shorter section of the steel rope 34 is connected to the raised position on the surface of the steam turbine through the lifting ring 35, and the longer section of the steel rope 34 is connected to the recessed position on the surface of the steam turbine through the lifting ring 35, which improves the overall applicability of the equipment. There is no need to process different steel ropes when repairing different steam turbines, thereby reducing processing costs.

[0032] like Figure 4 As shown, the co-rotating mechanism 22 includes two gears 1 221, the inner walls of the two gears 1 221 are fixedly connected to the bottom of the outer walls of the two rotating columns 21, and a motor 1 222 is fixedly installed at the middle position of the top of the inner wall of the mounting frame 1. The output end of the motor 1 222 is fixedly sleeved with a gear 2 223, and the outer surfaces of the two gears 1 221 are meshed with the outer surface of the gear 2 223.

[0033] The output end of the motor 1 222 drives the gear 2 223 to rotate. The two gears 1 221 engage with the gear 2 223 to drive the two rotating columns 21 to rotate in the same direction, thereby retracting / lowering the two hanging ropes 24.

[0034] like Figure 4As shown, the spacing adjustment mechanism 27 comprises a motor two 271, the rear side of the motor two 271 is fixedly installed with a fixed frame, the front end of the fixed frame is fixedly connected with the rear right part of the mounting frame 1, the output end of the motor two 271 is fixedly sleeved with a drive gear 272, the left and right positions of the top of the rear side of the mounting frame 1 are both slidably connected with a rack 273, the two racks 273 are oppositely arranged, and the opposite sides of the two racks 273 are in mesh with the outer surface of the drive gear 272.

[0035] Through the output end of the motor two 271, the drive gear 272 rotates, and the two racks 273 move oppositely by meshing with the drive gear 272.

[0036] As shown in the figure, Figure 4 the sides of the two racks 273 away from each other are fixedly connected with the rear sides of the two moving frames 26.

[0037] The opposite movement of the two racks 273 can change the spacing of the two moving frames 26, so that the two hanging ropes 24 can adapt to different lengths of steam turbines. Among them, the two racks 273 are fixedly connected with the corresponding moving frames 26 through different connecting plates.

[0038] As shown in the figure, Figure 4 the ends of the two racks 273 away from each other are both fixedly installed with a slide rod 274, the outer wall of the right slide rod 274 is slidably connected with the inner wall of the right rear position of the inner wall of the mounting frame 1, and the outer wall of the left slide rod 274 is slidably connected with the inner wall of the left rear position of the upper end of the mounting frame 1.

[0039] The two slide rods 274 limit the movement of the two racks 273.

[0040] As shown in the figure, Figure 6 The clamping mechanism 36 comprises four guide rods 361, the opposite ends of the four left and right adjacent guide rods 361 are fixedly connected with the front and rear positions of the sides away from each other of the two fixed boxes 31, the outer walls of the four front and rear adjacent guide rods 361 are slidably connected with inner toothed discs 362, the inner walls of the two inner toothed discs 362 are clamped with the outer surfaces of the two gears 33, the outer wall top of the two inner toothed discs 362 is fixedly installed with a pull rod 363, and the sides away from each other of the outer walls of the four left and right adjacent guide rods 361 are movably sleeved with elastic members 364.

[0041] According to actual conditions, when it is necessary to adjust the length of one of the steel ropes 34, the inner toothed disc 362 is pulled away from the fixed box 31 by the pull rod 363, at this time the gear 33 is released from the fixed state, the rotating disc 37 is rotated, and the rotating shaft 32 is driven to rotate by the rotating disc 37, so that the steel rope 34 is wound up or unwound. The shorter section of the steel rope 34 is connected to the position protruding on the surface of the steam turbine through the lifting ring 35, and the longer section of the steel rope 34 is connected to the position recessed on the surface of the steam turbine through the lifting ring 35, so that the overall applicability of the equipment is improved. In the above process, after the length of the steel rope 34 is adjusted, the pull rod 363 can be released, and the elastic force of the corresponding elastic member 364 can drive the inner toothed disc 362 to reset and re-engage the gear 33. The four elastic members 364 are springs, one end of each of the four adjacent springs is fixedly connected to one side of the outer wall of the four adjacent guide rods 361 away from each other, and the opposite end of each of the four adjacent springs is fixedly connected to the front and rear parts of the two inner toothed discs 362 away from each other.

[0042] As shown in Figure 5 and Figure 6 , one end of each of the two rotating shafts 32 away from each other is fixedly installed with a rotating disc 37.

[0043] The rotating disc 37 is used for adjusting the rotating shaft 32.

[0044] The working principle of the utility model is as follows: when in use, the steam turbine is located directly below the mounting frame 1, the motor two 271 is started according to the overall length of the steam turbine, the output end of the motor two 271 drives the driving gear 272 to rotate, the two racks 273 move oppositely by meshing with the driving gear 272, the opposite movement of the two racks 273 can change the distance between the two moving frames 26, so that the bottoms of the two lifting ropes 24 are located at different positions due to the movement of the moving frames 26, and the two lifting rings 35 are convenient for lifting steam turbines of different lengths. Then, the motor one 222 is automatically started, the output end of the motor one 222 can drive the gear two 223 to rotate, the two gear one 221s drive the two rotating columns 21 to rotate in the same direction by meshing with the gear two 223, so that the two lifting ropes 24 are lowered, and the two lifting ropes 24 pass through the corresponding sliding grooves 25 to drive the two fixed boxes 31 to continuously move downward.

[0045] The steam turbine is lifted by the lifting rings 35 on the two steel ropes 34.

[0046] When facing steam turbines of different shapes, the two lifting ropes 24 are first moved to appropriate positions, the two clamping mechanisms 36 are adjusted in sequence, the corresponding two gears 33 can be released from the fixed state in sequence, the rotating shaft 32 is driven to rotate by the rotating disc 37, so that the winding / unwinding of the steel rope 34 is completed, the shorter section of the steel rope 34 is connected to the position protruding on the surface of the steam turbine through the lifting ring 35, and the longer section of the steel rope 34 is connected to the position recessed on the surface of the steam turbine through the lifting ring 35, so that the overall applicability of the equipment is improved, different steel ropes need not be additionally processed when different steam turbines are overhauled, and the processing cost is reduced.

[0047] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A hoisting device for overhauling steam turbines in power plants, comprising a portal-like mounting frame (1), characterized in that: The upper end left and right parts of the mounting frame (1) are movably connected with a lifting rope adjusting assembly (2), and the bottom left and right positions of the lifting rope adjusting assembly (2) are fixedly installed with a lifting adapting assembly (3); The lifting rope adjusting assembly (2) comprises two rotating columns (21), the outer wall bottoms of the two rotating columns (21) are movably connected with the inner walls of the upper end left and right parts of the mounting frame (1), the outer wall bottoms of the two rotating columns (21) are fixedly installed with same direction rotating mechanisms (22), the outer wall tops of the two rotating columns (21) are fixedly sleeved with rope winding discs (23), the outer walls of the two rope winding discs (23) are wound with lifting ropes (24), the upper end left and right parts of the mounting frame (1) are provided with sliding grooves (25), the inner walls of the two sliding grooves (25) are movably connected with moving frames (26), the inner walls of the top parts of the two moving frames (26) are movably sleeved with the two lifting ropes (24) away from the outer walls of the two rotating columns (21), and the rear sides of the two moving frames (26) are movably connected with spacing adjusting mechanisms (27). The lifting adapting assembly (3) comprises two fixed boxes (31), one end of the two lifting ropes (24) away from the two moving frames (26) penetrates through the sliding grooves (25) and is fixedly connected with the upper end middle parts of the two fixed boxes (31), the inner wall left and right parts of the two fixed boxes (31) are movably connected with rotating shafts (32), the outer wall sides of the two rotating shafts (32) away from each other penetrate through the sides of the two fixed boxes (31) away from each other and are fixedly sleeved with gears (33), the outer wall middle parts of the two rotating shafts (32) are wound with steel ropes (34), one end of the two steel ropes (34) away from the two rotating shafts (32) penetrates through the bottoms of the two fixed boxes (31) and is fixedly installed with lifting rings (35), and the sides of the two fixed boxes (31) away from each other are movably connected with clamping mechanisms (36).

2. The hoisting device for overhauling a steam turbine of a thermal power plant according to claim 1, characterized in that: The same direction rotating mechanisms (22) comprise two gears one (221), the inner walls of the two gears one (221) are fixedly connected with the outer wall bottoms of the two rotating columns (21), the middle positions of the inner wall tops of the mounting frames (1) are fixedly installed with motors one (222), the output ends of the motors one (222) are fixedly sleeved with gears two (223), and the outer surfaces of the two gears one (221) are in mesh with the outer surfaces of the gears two (223).

3. The hoisting device for overhauling a steam turbine of a thermal power plant according to claim 1, characterized in that: The spacing adjusting mechanisms (27) comprise a motor two (271), the rear side of the motor two (271) is fixedly installed with a fixed frame, the front end of the fixed frame is fixedly connected with the rear right part of the mounting frame (1), the output end of the motor two (271) is fixedly sleeved with a driving gear (272), the left and right positions of the top part of the rear side of the mounting frame (1) are movably connected with racks (273), the two racks (273) are oppositely arranged, and the opposite sides of the two racks (273) are in mesh with the outer surface of the driving gear (272).

4. The hoisting device for overhauling a steam turbine of a thermal power plant according to claim 3, characterized in that: The sides of the two racks (273) away from each other are fixedly connected with the rear sides of the two moving frames (26).

5. A hoisting device for steam turbine overhauls in a thermal power plant according to claim 4, characterized in that: Two far away from each other one end of the rack (273) are fixedly installed with slide rod (274), located in the right part of the outer wall of the slide rod (274) and the inner wall of the mounting frame (1) right rear position of the inner wall sliding connection, located in the left part of the outer wall of the slide rod (274) and the inner wall of the mounting frame (1) upper left rear position of the inner wall sliding connection.

6. The hoisting device for the maintenance of a steam turbine of a thermal power plant according to claim 1, characterized in that: The clamping mechanism (36) comprises four guide rods (361), the opposite ends of four left and right adjacent guide rods (361) are fixedly connected with the front and rear positions of the two fixed boxes (31) far away from each other on one side, the outer walls of four front and rear adjacent guide rods (361) are slidingly connected with the inner tooth plates (362), the inner walls of two inner tooth plates (362) are clamped with the outer surfaces of two gears (33), the outer walls of two inner tooth plates (362) are fixedly installed with pull rods (363) on the top, and the outer walls of four left and right adjacent guide rods (361) are movably sleeved with elastic members (364) on one side far away from each other.

7. The hoisting device for the maintenance of a steam turbine of a thermal power plant according to claim 1, characterized in that: Two far away from each other one end of the shaft (32) are fixedly installed with turntable (37).

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