CN219788116U

CN219788116U - Steam turbine maintenance fixing device

Info

Publication number: CN219788116U
Application number: CN202321183353.0U
Authority: CN
Inventors: 王洪林; 李兆冲
Original assignee: SEPCO3 Electric Power Construction Co Ltd
Current assignee: SEPCO3 Electric Power Construction Co Ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-10-03
Anticipated expiration: 2033-05-17

Abstract

The utility model provides a steam turbine maintenance fixing device, which comprises an I-shaped base, a first sliding plate, a second sliding plate, a supporting mechanism, a positioning mechanism and a bidirectional electric push rod, wherein the I-shaped base is provided with a first sliding plate and a second sliding plate, and the first sliding plate is provided with a second sliding plate: the upper surfaces of the two transverse plates of the I-shaped base are respectively provided with a sliding groove, and the I-shaped base is in sliding connection with the first sliding plate and the second sliding plate through the sliding grooves; the upper parts of the first slide plate and the second slide plate are respectively provided with a supporting mechanism in a sliding way, and the outer sides of the first slide plate and the second slide plate are respectively provided with a positioning mechanism in a fixed way; the first sliding plate and the second sliding plate are fixedly connected through two bidirectional electric push rods, and the shell of each bidirectional electric push rod is fixedly connected with the inside of the sliding groove respectively; the utility model can carry out bearing and fixing work on the main shafts of the steam turbines with various different sizes, so that the whole device is more convenient and flexible.

Description

Steam turbine maintenance fixing device

Technical Field

The utility model belongs to the field of maintenance, and particularly relates to a maintenance fixing device for a steam turbine.

Background

A steam turbine maintenance fixing device as disclosed in Chinese patent No. CN 216477502U relates to the technical field of steam turbines. The utility model comprises a base, wherein the top of the base is provided with a lower fixed plate, the lower fixed plate is fixedly connected to the base, the top of the lower fixed plate is provided with a left fixed plate and a right fixed plate, the interiors of the lower fixed plate, the left fixed plate and the right fixed plate are jointly provided with a gear groove, the interiors of the gear groove are provided with a gear ring, and the bottoms of the gear rings are meshed with gears. According to the utility model, through the structures such as the motor, the gear ring, the gear and the like, the motor drives the gear, the gear ring and the main shaft to rotate, so that the main shaft can rotate while being fixed, and meanwhile, the anti-slip gasket can increase the surface friction of the main shaft to enable the main shaft to rotate normally, and further, when maintenance and detection positions are at the bottom or the top and the like and are inconvenient for maintenance operation, the maintenance position is rotated to a position where personnel are convenient for operation by rotating the main shaft, so that the maintenance and detection are convenient for multidirectional detection and maintenance.

However, when the fixing device for maintaining the steam turbine is used, the fixing of the steam turbines with various sizes is inconvenient, and when the steam turbines are fixed, the two ends of the steam turbines need to be inserted into the rotating rings, so that the centers of the two ends of the steam turbines need to correspond to the centers of the rotating rings, and if the centers of the two ends of the steam turbines do not correspond to the centers of the rotating rings, the two ends of the steam turbines cannot be fixed, so that the fixing device has great limitation.

Therefore, it is necessary to provide a steam turbine maintenance fixture.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a steam turbine maintenance fixing device, which adopts the following technical scheme: the utility model provides a steam turbine maintenance fixing device, includes I shape base, slide one, slide two, supporting mechanism, positioning mechanism and two-way electric putter, wherein: the upper surfaces of the two transverse plates of the I-shaped base are respectively provided with a sliding groove, and the I-shaped base is in sliding connection with the first sliding plate and the second sliding plate through the sliding grooves; the upper parts of the first slide plate and the second slide plate are respectively provided with a supporting mechanism in a sliding way, and the outer sides of the first slide plate and the second slide plate are respectively provided with a positioning mechanism in a fixed way; the first sliding plate and the second sliding plate are fixedly connected through two bidirectional electric push rods, and the shell of each bidirectional electric push rod is fixedly connected with the inside of the sliding groove.

Preferably, the supporting mechanism comprises three hydraulic cylinders, and the three hydraulic cylinders are arranged in a straight shape; the bottom end of each hydraulic cylinder shell is fixedly provided with a fixing seat, two hydraulic cylinders positioned at two sides in each supporting mechanism are respectively connected with the corresponding first sliding plate and the corresponding second sliding plate in a sliding manner through the fixing seats, and one hydraulic cylinder positioned in the middle in each supporting mechanism is respectively connected with the corresponding first sliding plate and the corresponding second sliding plate through the fixing seats; the top end of each hydraulic cylinder is fixedly provided with a U-shaped frame, the opening end of each U-shaped frame is fixedly provided with a semicircular arc plate, and the outer side of each semicircular arc plate is fixedly provided with a transmission case; the opening of each semicircular arc plate faces upwards respectively, a rotating roller is rotatably arranged in each semicircular arc plate, and one end of each rotating roller is in transmission connection with the corresponding transmission box.

Preferably, the first sliding plate and the second sliding plate have the same composition structure, and the first sliding plate and the second sliding plate are arranged at mirror positions; the first sliding plate comprises plate bodies, the upper surface of each plate body is provided with a cavity, and the inner mirror image position of each cavity is fixedly provided with a first electric screw rod mechanism and a second electric screw rod mechanism; the screw rods of the first electric screw rod mechanism and the second electric screw rod mechanism are respectively connected with the cavity in a rotating way; two ends of the bottom surface of the plate body are respectively fixedly provided with a sliding table, and spheres are respectively rotatably arranged on the bottom surface of the sliding table and two sides of the joint of the sliding table and the plate body; the screw rods of the first electric screw rod mechanism and the second electric screw rod mechanism in the first slide plate and the second slide plate are respectively and rotatably connected with the fixed seat at the bottom of each hydraulic cylinder; two hydraulic cylinders positioned at two sides in each supporting mechanism are respectively connected with the corresponding cavities on the first slide plate and the second slide plate in a sliding way through fixing seats, and one hydraulic cylinder positioned in the middle in each supporting mechanism is respectively and fixedly connected with the corresponding cavities on the first slide plate and the second slide plate through fixing seats; the sliding tables on the first sliding plate and the second sliding plate are respectively connected with the inside of the sliding groove in a sliding manner, the ball body at the bottom of each sliding table is respectively connected with the inside of the sliding groove in a rotating manner, and the balls at the two sides of the joint of the sliding table and the plate body are respectively connected with the two sides above the sliding groove in a rotating manner.

Preferably, a gear motor is fixedly installed in each transmission case, and the output end of each gear motor is fixedly connected with one end of the corresponding rotating roller.

Preferably, the positioning mechanism comprises a second hydraulic cylinder, the output end of each second hydraulic cylinder is fixedly provided with a supporting seat, and each supporting seat is fixedly provided with a third hydraulic cylinder; the output end of each hydraulic cylinder III is fixedly provided with an extrusion disc, the bottom end of the shell of each hydraulic cylinder III is fixedly provided with a connecting seat, and each connecting seat is fixedly connected with the plate body corresponding to the first sliding plate and the second sliding plate; the position of each extrusion plate is coaxial with the rotating roller on one hydraulic cylinder in the middle of each supporting mechanism.

Compared with the prior art, the utility model has the advantages that:

according to the utility model, through the integral arrangement, when the steam turbine is maintained, not only can the support and fixation work be carried out on the steam turbines with different sizes, but also the two ends of the steam turbine can be conveniently and respectively placed on each support mechanism, so that the integral steam turbine is more convenient and flexible to use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

FIG. 2 is a schematic view of the first slide plate and positioning mechanism of the present utility model.

FIG. 3 is a schematic view of the bottom surface structures of the first and second skateboards of the present utility model.

Fig. 4 is a schematic view of the partial enlarged structure at a of the present utility model.

In the figure:

i-shaped base 1, spout 2, slide first 3, plate body 31, cavity 32, electric screw mechanism first 33, electric screw mechanism second 34, slip table 35, spheroid 36, slide second 4, supporting mechanism 5, pneumatic cylinder 51, fixing base 52, U-shaped frame 53, semicircle shaped plate 54, transmission case 55, roller 56, positioning mechanism 6, pneumatic cylinder second 61, supporting seat 62, pneumatic cylinder third 63, extrusion dish 64, connecting seat 65, two-way electric putter 7.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution of the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

In the description of the embodiments, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model is further described below with reference to the accompanying drawings:

example 1

Referring to fig. 1-4, a steam turbine maintenance fixing device comprises an i-shaped base 1, a first sliding plate 3, a second sliding plate 4, a supporting mechanism 5, a positioning mechanism 6 and a bidirectional electric push rod 7, wherein: the upper surfaces of the two transverse plates of the I-shaped base 1 are respectively provided with a sliding groove 2, the I-shaped base 1 is in sliding connection with the first sliding plate 3 and the second sliding plate 4 through the sliding grooves 2, and the sliding stability can be ensured when the first sliding plate 3 and the second sliding plate 4 slide along the sliding grooves 2 through the arrangement of the sliding grooves 2; the support mechanisms 5 are slidably arranged at the positions above the first slide plate 3 and the second slide plate 4, the two ends of the turbine main shaft can be supported by the arrangement of the support mechanisms 5, and the turbine main shaft can be driven to rotate 360 degrees on the support mechanisms 5, so that maintenance work is conveniently carried out on different positions of the turbine main shaft, the positioning mechanisms 6 are fixedly arranged at the positions of the outer sides of the first slide plate 3 and the second slide plate 4, which are mirror images, and through the arrangement of the positioning mechanisms 6, when the turbine main shaft is not required to rotate, one end of the turbine main shaft can be extruded and fixed through the positioning mechanisms 6, so that the rotation of the turbine main shaft is prevented; the first sliding plate 3 and the second sliding plate 4 are fixedly connected through the two bidirectional electric push rods 7, the outer shell of each bidirectional electric push rod 7 is fixedly connected with the inside of the sliding groove 2, and the distance between the first sliding plate 3 and the second sliding plate 4 can be adjusted through the arrangement of each bidirectional electric push rod 7, so that corresponding support and fixation of various turbine spindles with different sizes can be conveniently carried out.

It should be noted that, the supporting mechanism 5 includes three hydraulic cylinders 51, and the three hydraulic cylinders 51 are arranged in a straight line, and by matching the arrangement of each rotary roller 56 with the three hydraulic cylinders 51, one rotary roller 56 in the middle can be lower than the other two rotary rollers 56, so that a concave cavity is formed between the three rotary rollers 56, thereby being convenient for bearing and limiting one end of the main shaft of the steam turbine, ensuring the safety of the main shaft of the steam turbine and preventing the main shaft of the steam turbine from falling off from the supporting mechanism 5; the bottom end of the shell of each hydraulic cylinder 51 is fixedly provided with a fixed seat 52, the pressure of the main shaft of the steam turbine can be borne through the arrangement of the fixed seats 52, the pressure is prevented from acting on each screw rod, so that the safety of the screw rods is ensured, two hydraulic cylinders 51 positioned on two sides in each supporting mechanism 5 are respectively connected with the corresponding first sliding plate 3 and the second sliding plate 4 in a sliding manner through the fixed seats 52, and one hydraulic cylinder 51 positioned in the middle in each supporting mechanism 5 is respectively connected with the corresponding first sliding plate 3 and the second sliding plate 4 through the fixed seats 52; the top end of each hydraulic cylinder 51 is fixedly provided with a U-shaped frame 53, the opening end of each U-shaped frame 53 is fixedly provided with a semicircular arc plate 54, and the outer side of each semicircular arc plate 54 is fixedly provided with a transmission case 55; the opening of each semicircular arc plate 54 faces upwards respectively, the rotating rollers 56 are respectively arranged in each semicircular arc plate 54 in a rotating mode, through the arrangement of the rotating rollers 56, the rotating rollers can rotate with the turbine main shaft, the turbine main shaft is driven to rotate, and therefore the position of the turbine main shaft can be adjusted, and one end of each rotating roller 56 is in transmission connection with the corresponding transmission case 55.

The first sliding plate 3 and the second sliding plate 4 have the same composition structure, and the first sliding plate 3 and the second sliding plate 4 are arranged at mirror positions; the first sliding plate 3 comprises plate bodies 31, the upper surface of each plate body 31 is provided with a cavity 32, the inner mirror image position of each cavity 32 is fixedly provided with a first electric screw mechanism 33 and a second electric screw mechanism 34, and through the arrangement of the first electric screw mechanism 33 and the second electric screw mechanism 34, two hydraulic cylinders 51 positioned on two sides in each supporting mechanism 5 can be driven to move along the cavities 32, so that the main shafts of the steam turbines with various sizes can be supported conveniently; the screw rods of the first electric screw rod mechanism 33 and the second electric screw rod mechanism 34 are respectively and rotatably connected with the cavity 32; two ends of the bottom surface of the plate body 31 are fixedly provided with sliding tables 35 respectively, the bottom surface of the sliding tables 35 and two sides of the joint of the sliding tables 35 and the plate body 31 are rotatably provided with spheres 36 respectively, and friction force between the first sliding plate 3 and the second sliding plate 4 and the I-shaped base 1 can be reduced through the arrangement of the sliding tables 35 and the spheres 36, so that the sliding motion between the sliding plates is smoother; the screw rods of the first electric screw rod mechanism 33 and the second electric screw rod mechanism 34 in the first slide plate 3 and the second slide plate 4 are respectively and rotatably connected with a fixed seat 52 at the bottom of each hydraulic cylinder 51; two hydraulic cylinders 51 positioned at two sides in each supporting mechanism 5 are respectively connected with the cavities 32 on the corresponding first slide plate 3 and the corresponding second slide plate 4 in a sliding way through fixing seats 52, and one hydraulic cylinder 51 positioned in the middle in each supporting mechanism 5 is respectively connected with the cavities 32 on the corresponding first slide plate 3 and the corresponding second slide plate 4 through the fixing seats 52 in a fixed way; the sliding tables 35 on the first sliding plate 3 and the second sliding plate 4 are respectively and slidably connected with the inside of the sliding groove 2, the ball 36 at the bottom of each sliding table 35 is respectively and rotatably connected with the inside of the sliding groove 2, and the balls 36 at the two sides of the joint of each sliding table 35 and the plate body 31 are respectively and rotatably connected with the two sides above the sliding groove 2.

The gear motor is fixedly installed in each transmission case 55, the output end of each gear motor is fixedly connected with one end of the corresponding rotary roller 56, and through the arrangement of the gear motor, when the position of the main shaft of the steam turbine needs to be adjusted, each rotary roller 56 can be driven to rotate, so that each rotary roller 56 drives the main shaft of the steam turbine to rotate, and the whole device is more convenient and flexible.

The positioning mechanism 6 comprises two hydraulic cylinders 61, the output end of each two hydraulic cylinders 61 is fixedly provided with a supporting seat 62, the position of each extrusion disc 64 can be adjusted through the arrangement of each two hydraulic cylinders 61, the center of each extrusion disc can correspond to the center of the main shaft of the steam turbine, each supporting seat 62 is fixedly provided with a three hydraulic cylinder 63, and each extrusion disc 64 can be driven to move towards one end of the main shaft of the steam turbine and extrude the main shaft of the steam turbine through the arrangement of each three hydraulic cylinder 63, so that the main shaft of the steam turbine is fixed; the output end of each hydraulic cylinder III 63 is fixedly provided with an extrusion disc 64, the bottom end of the shell of each hydraulic cylinder III 63 is fixedly provided with a connecting seat 65, and each connecting seat 65 is fixedly connected with the plate body 31 of the corresponding slide plate I3 and the slide plate II 4; the position of each pressing plate 64 is concentric with the turning roller 56 on the middle one of the hydraulic cylinders 51 in each supporting mechanism 5.

In the embodiment, when in use, the distance between the first sliding plate 3 and the second sliding plate 4 is adjusted through each bidirectional electric push rod 7 according to the length of the main shaft of the steam turbine, so that the distance is matched with the length of the main shaft of the steam turbine; at this time, according to the diameters of the two ends of the main shaft of the steam turbine, one hydraulic cylinder 51 in the middle of each supporting mechanism 5 drives one rotary roller 56 in the middle to be lower than the other two rotary rollers 5, the heights of the other two rotary rollers 5 are the same, and then the distance between the two rotary rollers 56 with the same height is adjusted through the first electric screw mechanism 33 and the second electric screw mechanism 34, so that one end of the main shaft of the steam turbine can be supported, and the surfaces of the three rotary rollers 56 can be contacted with the surface of the main shaft of the steam turbine; at this time, the main shaft of the steam turbine can be lifted up through corresponding external lifting equipment, the two ends of the main shaft of the steam turbine are respectively positioned above the supporting mechanisms 5, and then the two ends of the main shaft of the steam turbine are placed in the three rotating rollers 56 on the corresponding supporting mechanisms 5; then the position of each extrusion disc 64 is adjusted through each hydraulic cylinder II 61, so that the center of each extrusion disc 64 corresponds to the center of the main shaft of the steam turbine, and each extrusion disc 64 is driven to move towards one end of the main shaft of the steam turbine through each hydraulic cylinder III 63 and extrudes the main shaft of the steam turbine, thereby fixing the main shaft of the steam turbine; at this time, the turbine main shaft can be maintained, when the turbine main shaft is required to be maintained at different positions, each rotary roller 56 can be driven to rotate through the gear motor, so that each rotary roller 56 drives the turbine main shaft to rotate, the position of the turbine main shaft is adjusted, and the whole turbine main shaft is more convenient and flexible.

By utilizing the technical scheme of the utility model or under the inspired by the technical scheme of the utility model, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical scheme falls into the protection scope of the utility model.

Claims

1. A steam turbine maintenance fixing device, characterized in that: including I shape base (1), slide one (3), slide two (4), supporting mechanism (5), positioning mechanism (6) and two-way electric putter (7), wherein: the upper surfaces of the two transverse plates of the I-shaped base (1) are respectively provided with a chute (2), and the I-shaped base (1) is in sliding connection with the first sliding plate (3) and the second sliding plate (4) through the chute (2); the support mechanisms (5) are respectively and slidably arranged at the mirror image positions above the first sliding plate (3) and the second sliding plate (4), and the positioning mechanisms (6) are respectively and fixedly arranged at the mirror image positions outside the first sliding plate (3) and the second sliding plate (4); the first sliding plate (3) and the second sliding plate (4) are fixedly connected through two bidirectional electric push rods (7), and the shell of each bidirectional electric push rod (7) is fixedly connected with the inside of the sliding groove (2).

2. A steam turbine service fixture as defined in claim 1, wherein: the supporting mechanism (5) comprises hydraulic cylinders (51), three hydraulic cylinders (51) are arranged, and the three hydraulic cylinders (51) are arranged in a straight shape; the bottom end of each hydraulic cylinder (51) shell is fixedly provided with a fixed seat (52), two hydraulic cylinders (51) positioned on two sides in each supporting mechanism (5) are respectively connected with the corresponding first sliding plate (3) and the corresponding second sliding plate (4) in a sliding manner through the fixed seats (52), and one hydraulic cylinder (51) positioned in the middle in each supporting mechanism (5) is respectively connected with the corresponding first sliding plate (3) and the corresponding second sliding plate (4) through the fixed seats (52); the top end of each hydraulic cylinder (51) is fixedly provided with a U-shaped frame (53), the opening end of each U-shaped frame (53) is fixedly provided with a semicircular arc plate (54), and the outer side of each semicircular arc plate (54) is fixedly provided with a transmission case (55); the opening of each semicircular arc plate (54) faces upwards respectively, a rotating roller (56) is rotatably arranged in each semicircular arc plate (54), and one end of each rotating roller (56) is in transmission connection with a corresponding transmission box (55).

3. A steam turbine service fixture as defined in claim 2, wherein: the first sliding plate (3) and the second sliding plate (4) have the same composition structure, and the first sliding plate (3) and the second sliding plate (4) are arranged at mirror positions; the first sliding plate (3) comprises plate bodies (31), the upper surface of each plate body (31) is provided with a cavity (32) respectively, and the inner mirror image position of each cavity (32) is fixedly provided with a first electric screw rod mechanism (33) and a second electric screw rod mechanism (34); the screw rods of the first electric screw rod mechanism (33) and the second electric screw rod mechanism (34) are respectively and rotatably connected with the cavity (32); two ends of the bottom surface of the plate body (31) are fixedly provided with sliding tables (35), and spheres (36) are rotatably arranged on the bottom surface of the sliding tables (35) and two sides of the joint of the sliding tables (35) and the plate body (31); the screws of the first electric screw rod mechanism (33) and the second electric screw rod mechanism (34) in the first sliding plate (3) and the second sliding plate (4) are respectively and rotatably connected with a fixed seat (52) at the bottom of each hydraulic cylinder (51); two hydraulic cylinders (51) positioned at two sides in each supporting mechanism (5) are respectively connected with the cavities (32) on the corresponding first sliding plate (3) and the corresponding second sliding plate (4) in a sliding way through fixing seats (52), and one hydraulic cylinder (51) positioned in the middle in each supporting mechanism (5) is respectively and fixedly connected with the cavities (32) on the corresponding first sliding plate (3) and the corresponding second sliding plate (4) through the fixing seats (52); the sliding tables (35) on the first sliding plate (3) and the second sliding plate (4) are respectively connected with the inside of the sliding groove (2) in a sliding manner, the ball body (36) at the bottom of each sliding table (35) is respectively connected with the inside of the sliding groove (2) in a rotating manner, and the balls (36) at the two sides of the joint of each sliding table (35) and the plate body (31) are respectively connected with the two sides above the sliding groove (2) in a rotating manner.

4. A steam turbine service fixture as claimed in claim 3, wherein: and a gear motor is fixedly arranged in each transmission case (55), and the output end of each gear motor is fixedly connected with one end of the corresponding rotating roller (56).

5. The steam turbine service fixture of claim 4, wherein: the positioning mechanism (6) comprises a second hydraulic cylinder (61), a supporting seat (62) is fixedly arranged at the output end of each second hydraulic cylinder (61), and a third hydraulic cylinder (63) is fixedly arranged on each supporting seat (62); the output end of each hydraulic cylinder III (63) is fixedly provided with an extrusion plate (64), the bottom end of the shell of each hydraulic cylinder III (63) is fixedly provided with a connecting seat (65), and each connecting seat (65) is fixedly connected with the plate body (31) corresponding to the first sliding plate (3) and the second sliding plate (4); the position of each extrusion disk (64) is concentric with the rotating roller (56) on the middle hydraulic cylinder (51) in each supporting mechanism (5).