CN112564433A

CN112564433A - Generator and phase modifier rotor take-out and mounting tool

Info

Publication number: CN112564433A
Application number: CN202011426176.5A
Authority: CN
Inventors: 曹志伟; 谭国良; 孙善华; 王继豪; 孙福春; 李培德
Original assignee: Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd; Shandong Qilu Motor Manufacturing Co Ltd; State Grid Corp of China SGCC
Current assignee: Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd; Shandong Qilu Motor Manufacturing Co Ltd; State Grid Corp of China SGCC
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-03-26

Abstract

The utility model relates to a tool for extracting and assembling the rotor of a generator and a condenser. The lifting device drives the rotor to move up and down until the rotor and the through hole have the same axis, and then the head end of the rotor is placed between the upper shaft seat and the lower shaft seat to realize clamping and fixing. Then, the wire rope is driven upward by the lifting mechanism, thereby driving the lower end of the rotor to move upward, and then the sliding seat driving mechanism drives the sliding seat to move to the outside, so as to move the rotor outward, and finally realize the removal of the rotor from the stator hall. It is suitable for the extraction and installation of the rotor of the steam turbine generator and the inverter, which greatly simplifies the existing process method, improves the efficiency, and reduces the potential safety hazard.

Description

Generator and phase modifier rotor take-out and mounting tool

Technical Field

The invention relates to the technical field of maintenance of a steam turbine generator, in particular to a generator and phase modifier rotor extracting and assembling tool.

Background

When the generator is overhauled on site, the rotor of the generator is taken out and assembled to be a key process when the generator is overhauled, the existing method for taking out and assembling the rotor of the generator is complex in process, needs multiple persons to cooperate and equip large-scale hoisting equipment and large-scale tooling equipment, and is low in efficiency and long in construction period. The existing process method includes a long shaft extension method, the method needs to firstly remove a steam turbine rotor, and the process is complex. In other methods, a rotor needs to be equipped for hoisting, heavy hoisting equipment (mostly a truck crane or a travelling crane) needs to be used, a large-scale guide rail tool is paved on the excitation end side of the generator, and a chain block is used as traction power. The methods generally have the defects of time consumption, labor waste, large potential safety hazard and the like.

Disclosure of Invention

The invention provides a tool for improving the extraction and assembly efficiency of a steam turbine generator and a phase modifier rotor in order to overcome the defects of the prior art.

The technical scheme adopted by the invention for overcoming the technical problems is as follows:

the utility model provides a generator and phase modifier rotor take out dress instrument, includes lower tile, sets up in the hoisting accessory of lower tile upper end and is located the rotor in the lower tile, still includes:

the steel wire rope is wrapped at the tail end of the rotor, the upper end of the steel wire rope is connected with a hoisting mechanism, and the hoisting mechanism drives the steel wire rope to drive the rotor to move upwards to be separated from the lower tile;

the upper end of the chassis is provided with a guide rail along the length direction of the chassis, the guide rail is parallel to the axis of the rotor, the sliding seat is arranged on the guide rail in a sliding manner, the inner side end of the chassis is provided with an end plate, and the end plate is contacted with the side end of the lower tile;

the sliding seat drive is arranged on the chassis and used for driving the sliding seat to slide along the guide rail;

the lower shaft seat is arranged above the sliding seat, and the lifting device is arranged on the sliding seat and used for driving the lower shaft seat to move up and down;

the upper shaft seat is fixed at the upper end of the lower shaft seat through a bolt, a through hole is formed between the upper shaft seat and the lower shaft seat, and the head end of the rotor is fixed in the through hole.

Furthermore, the hoisting mechanism comprises bolts screwed on the upper end of the hoisting device respectively, the bolts are arranged along the vertical direction, and two ends of the steel wire rope are fixed at the lower ends of the bolts corresponding to the same side respectively.

The sliding shoe is positioned between the rotor and the sliding plate, the upper end surface of the sliding shoe is contacted with the rotor, and the lower end surface of the sliding shoe is contacted with the sliding plate.

Furthermore, the sliding seat driving mechanism comprises a lead screw rotatably mounted on the chassis and a servo motor I mounted on the chassis, the servo motor I is in transmission connection with the lead screw, the axis of the lead screw is parallel to the axis of the rotor, and the lead screw is in threaded transmission connection with the sliding seat.

The lifting device comprises screws vertically arranged at four corners of the lower shaft seat respectively, the screws are in threaded transmission connection with the lower shaft seat, the lower ends of the screws are connected to a right-angle commutator II, a servo motor II is installed on the sliding seat, and the output end of the servo motor II is in transmission connection with each right-angle commutator II through a right-angle commutator I.

Further, still including setting up the extension board between lower tile and chassis, be provided with the gliding dolly of its length direction on the extension board, the dolly upper end is provided with the supporting seat, and the supporting seat contacts with the rotor.

The invention has the beneficial effects that: the lifting device drives the lower shaft seat to move up and down until the rotor is coaxial with the through hole, then the head end of the rotor is placed between the upper shaft seat and the lower shaft seat to realize clamping and fixing, then the steel wire rope is driven to move up through the lifting mechanism, so that the lower end of the rotor is driven to move up, then the sliding seat driving mechanism drives the sliding seat to move outwards, the rotor is moved outwards, and finally the rotor is moved out from the stator hall. The method is suitable for the extraction and assembly of the turbonator and the phase modifier rotor, greatly simplifies the prior process method, improves the efficiency and reduces the potential safety hazard.

Drawings

FIG. 1 is a schematic front view of a lifting device of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic side view of the present invention with an additional extension board;

FIG. 4 is a schematic perspective view of a shaft seat portion of the present invention;

in the figure, 1, a lower tile 2, a rotor 3, a lifting device 4, a bolt 5, a steel wire rope 6, a sliding shoe 7, a chassis 8, an end plate 9, a lead screw 10, a guide rail 11, a servo motor I12, a sliding seat 13, a servo motor II 14, a screw 15, an upper shaft seat 16, a lengthening plate 17, a trolley 18, a supporting seat 19, a lower shaft seat 20, a through hole 21, a right-angle commutator I22, a right-angle commutator II 23 and a sliding plate are arranged.

Detailed Description

The invention will be further described with reference to fig. 1 to 4.

The utility model provides a generator and phase modifier rotor take out dress instrument, includes tile 1 down, sets up in hoisting accessory 3 of tile 1 upper end down and is located rotor 2 in tile 1 down, still includes: the steel wire rope 5 is wound at the tail end of the rotor 2, the upper end of the steel wire rope is connected with a hoisting mechanism, and the hoisting mechanism drives the steel wire rope 5 to drive the rotor 2 to move upwards to be separated from the lower tile 1; the upper end of the chassis 7 is provided with a guide rail 10 along the length direction, the guide rail 10 is parallel to the axis of the rotor 2, the sliding seat 12 is slidably arranged on the guide rail 10, the inner side end of the chassis 7 is provided with an end plate 8, and the end plate 8 is contacted with the side end of the lower tile 1; the sliding seat drive is arranged on the chassis 7 and used for driving the sliding seat 12 to slide along the guide rail 10; the lower shaft seat 19 is arranged above the sliding seat 12, and the lifting device is arranged on the sliding seat 12 and used for driving the lower shaft seat 19 to move up and down; the upper shaft seat 15 is fixed at the upper end of the lower shaft seat 19 through bolts, a through hole 20 is formed between the upper shaft seat 15 and the lower shaft seat 19, and the head end of the rotor 2 is fixed in the through hole 20. During the use, elevating gear drive lower shaft seat 19 reciprocates until rotor 2 and through-hole 20 are coaxial mutually, later place the head end of rotor 2 in between upper shaft seat 15 and lower shaft seat 19, realize pressing from both sides tight fixed, later shift up through hoisting by crane mechanism drive wire rope 5 to the lower extreme of drive rotor 2 shifts up, later slide actuating mechanism drive slide 12 moves to the outside, thereby outwards shifts out rotor 2, finally realizes shifting out rotor 2 from the stator hall. The method is suitable for the extraction and assembly of the turbonator and the phase modifier rotor, greatly simplifies the prior process method, improves the efficiency and reduces the potential safety hazard.

The lifting mechanism can be of a structure comprising bolts 4 screwed at the upper ends of the lifting devices 3 respectively, the bolts 4 are arranged along the vertical direction, and two ends of the steel wire rope 5 are fixed at the lower ends of the bolts 4 corresponding to the same side respectively. By tightening the bolt 4, the wire rope 5 is driven to move up, thereby lifting the rotor 2.

Preferably, the sliding device further comprises a sliding shoe 6 in a circular arc shape, wherein the sliding shoe 6 is positioned between the rotor 2 and the sliding plate 23, the upper end surface of the sliding shoe 6 is in contact with the rotor 2, and the lower end surface of the sliding shoe is in contact with the sliding plate 23. The provision of the shoe 6 between the rotor 2 and the sliding plate 23 can reduce the frictional force when the rotor 2 is removed from the sliding plate 23, thereby preventing the rotor 2 and the sliding plate 23 from being worn.

The slide seat driving mechanism can be of a structure comprising a lead screw 9 rotatably mounted on the chassis 7 and a servo motor I11 mounted on the chassis 7, wherein the servo motor I11 is in transmission connection with the lead screw 9, the axis of the lead screw 9 is parallel to the axis of the rotor 2, and the lead screw 9 is in threaded transmission connection with the slide seat 12. The servo motor I11 rotates to drive the lead screw 9 to rotate, and the lead screw 9 rotates to drive the sliding seat 12 to slide along the guide rail 10.

The lifting device can be of a structure comprising screw rods 14 vertically arranged at four corners of a lower shaft seat 19 respectively, the screw rods 14 are in threaded transmission connection with the lower shaft seat 19, the lower ends of the screw rods 14 are connected to a right-angle commutator II 22, a servo motor II 13 is installed on a sliding seat 12, and the output end of the servo motor is in transmission connection with each right-angle commutator II 22 through a right-angle commutator I21. The servo motor II 13 acts to drive the screw rods 14 to rotate through the right-angle commutator I21 and the right-angle commutators II 22, and the screw rods 14 synchronously rotate so as to drive the lower shaft seat 19 to move up and down.

Furthermore, the combined type rotor structure further comprises an extension plate 16 arranged between the lower tile 1 and the chassis 7, a trolley 17 sliding along the length direction of the extension plate 16 is arranged on the extension plate 16, a supporting seat 18 is arranged at the upper end of the trolley 17, and the supporting seat 18 is in contact with the rotor 2. After the rotor 2 moves out for a certain distance, the extension plate 16 is arranged between the lower tile 1 and the chassis 7, the trolley 17 supports the rotor 2 at the moment, and the sliding seat 12 can be driven to move outwards again through the rotation of the lead screw 9, so that the rotor 2 can be driven to move outwards again, and the purpose of prolonging the stroke is achieved.

Claims

1. A tool for extracting and assembling a rotor of a generator and a condenser, comprising a lower tile (1), a hoisting device (3) arranged on the upper end of the lower tile (1), and a rotor (2) located in the lower tile (1), wherein It is characterized in that it also includes:

The wire rope (5) is wrapped around the rear end of the rotor (2), the upper end of which is connected with a hoisting mechanism, and the hoisting mechanism drives the wire rope (5) to drive the rotor (2) to move up to disengage from the lower tile (1);

A chassis (7), the upper end of which is provided with a guide rail (10) along its length direction, the guide rail (10) is parallel to the axis of the rotor (2), the sliding seat (12) is slidably installed on the guide rail (10), and the chassis ( The inner end of 7) is provided with an end plate (8), and the end plate (8) is in contact with the side end of the lower tile (1);

The sliding seat drive is arranged on the chassis (7) and is used for driving the sliding seat (12) to slide along the guide rail (10);

The lower shaft seat (19) is arranged above the sliding seat (12), and the lifting device is arranged on the sliding seat (12) for driving the lower shaft seat (19) to move up and down;

The upper shaft seat (15) is fixed to the upper end of the lower shaft seat (19) by bolts, a through hole (20) is formed between the upper shaft seat (15) and the lower shaft seat (19), and the head end of the rotor (2) is fixed to the upper end of the lower shaft seat (19). through hole (20).

2. The generator and inverter rotor extraction tool according to claim 1, wherein the lifting mechanism comprises bolts (4) respectively screwed to the upper ends of the lifting device (3), and the bolts (4) Arranged along the vertical direction, the two ends of the wire rope (5) are respectively fixed to the lower ends of the corresponding bolts (4) on the same side.

3. The generator and inverter rotor extraction tool according to claim 1, characterized in that it further comprises a circular arc-shaped sliding shoe (6), the sliding shoe (6) is located between the rotor (2) and the sliding plate Between (23), the upper end surface of the sliding shoe (6) is in contact with the rotor (2), and the lower end surface thereof is in contact with the sliding plate (23).

4. The generator and camera rotor extraction tool according to claim 1, wherein the sliding seat driving mechanism comprises a lead screw (9) rotatably mounted on the chassis (7) and a lead screw (9) mounted on the chassis (7) ) on the servo motor I (11), the servo motor I (11) is drivingly connected with the lead screw (9), the axis of the lead screw (9) is parallel to the axis of the rotor (2), and the lead screw (9) is connected to the The sliding seat (12) has a threaded drive connection.

5. The generator and inverter rotor extraction tool according to claim 1, wherein the lifting device comprises screws (14) vertically arranged at the four corners of the lower axle seat (19) respectively, The screw (14) is connected with the lower shaft seat (19) in a threaded drive, the lower end of the screw (14) is connected to the right-angle commutator II (22), and the servo motor II (13) is installed on the sliding seat (12), which is The output end is connected with each right angle commutator II (22) through the right angle commutator I (21).

6. The generator and inverter rotor extraction tool according to claim 1, characterized in that it further comprises an extension plate (16) arranged between the lower tile (1) and the chassis (7), the connection The long plate (16) is provided with a trolley (17) sliding along its length direction, the upper end of the trolley (17) is provided with a support seat (18), and the support seat (18) is in contact with the rotor (2).