CN219259368U

CN219259368U - Main shaft turning tool of large-scale axial flow turbine

Info

Publication number: CN219259368U
Application number: CN202223433524.9U
Authority: CN
Inventors: 吴义斌; 朱涛; 於华; 史永轩; 唐雨; 陶钻
Original assignee: Guangxi Datengxia Water Control Project Development Co ltd
Current assignee: Guangxi Datengxia Water Control Project Development Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-27
Anticipated expiration: 2032-12-21

Abstract

The utility model relates to a main shaft turning tool of a large-scale axial flow propeller turbine, which comprises a main shaft, wherein a first flange and a second flange are respectively fixed on two sides of the main shaft, the first flange is used for connecting the main shaft with a motor, the second flange is used for connecting the main shaft with a rotating wheel, a main shaft hoisting tool is detachably connected to the side surface of the first flange, and a turning tool is detachably connected to the side surface of the second flange.

Description

Main shaft turning tool of large-scale axial flow turbine

Technical Field

The utility model relates to the technical field of large-scale axial-flow propeller turbines, in particular to a main shaft turning tool of a large-scale axial-flow propeller turbine.

Background

The main shaft of the large-scale axial flow propeller turbine is main equipment for transmitting torque, the rotating force of a turbine runner is transmitted to a generator through the main shaft, the main shaft of the large vine gorge turbine is 6205mm in length and 90t in weight, the maximum diameter is 2630mm, the main shaft is provided with two flange surfaces, one surface of the main shaft is connected with the runner, the other surface of the main shaft is connected with a generator shaft, a horizontal mode is generally adopted after the main shaft reaches a unit installation room, and the main shaft is required to be in a vertical state during installation. The existing turning-over mode is to connect a hoisting tool provided by a manufacturer with a generator shaft connecting surface, a bridge machine is used for slowly hoisting a main shaft until the main shaft is in a vertical state, but the main shaft can swing back and forth and roll left and right due to the fact that the bottom of the main shaft is round in the turning-over process, other equipment can be damaged and a flange surface at the lower end of the main shaft can be damaged in the processes of swing back and forth and roll left and right of the main shaft due to limited space between installation, the axis is seriously influenced when the flange surface is scratched and deformed, and the safety operation of later equipment is deadly threatened.

Disclosure of Invention

Therefore, the utility model provides a main shaft turning tool of a large-scale axial flow propeller turbine, which is used for solving the problems that in the prior art, a bridge machine is used for slowly lifting the main shaft until the main shaft is in a vertical state, but the main shaft can swing back and forth and roll left and right due to the fact that the bottom of the main shaft is round in the turning process, other equipment can be damaged and the flange surface at the lower end of the main shaft is damaged in the processes of swinging back and forth and rolling left and right of the main shaft due to limited space between installation, so that the axis is seriously influenced when the large shaft is installed due to the scratch and deformation of the flange surface, and the safety operation of later-stage equipment is deadly threatened.

In order to achieve the above purpose, the utility model provides a turning tool for a main shaft of a large-scale axial-flow propeller turbine, which comprises a main shaft, wherein a first flange and a second flange are respectively fixed on two sides of the main shaft, the first flange is used for connecting the main shaft with a motor, the second flange is used for connecting the main shaft with a rotating wheel, a main shaft hoisting tool is detachably connected to the side surface of the first flange, a turning tool is detachably connected to the side surface of the second flange, the turning tool comprises a positioning mechanism, a hoisting mechanism and a reinforcing mechanism, the positioning mechanism is provided with the hoisting mechanism, the hoisting mechanism is fixedly connected with the positioning mechanism, and the positioning mechanism can enable the turning tool to be in positioning connection with the side surface of the second flange.

Further, the positioning mechanism comprises a fan-shaped base, screw holes are respectively and fixedly arranged at two sides of the fan-shaped base close to the edges, bolts are screwed on the screw holes, and the size of the two screw holes and the distance between the two screw holes are the same as the size of the screw holes on the second flange and the distance between the adjacent screw holes on the second flange.

Further, the hoisting mechanism comprises a hoisting ring, a conical base and two auxiliary hoisting holes, wherein the hoisting ring is fixedly installed on the conical base in the Y-axis direction, the hoisting ring is arranged between two screw holes, the conical base is fixed on the fan-shaped base, the two sides of the conical base are respectively provided with the auxiliary hoisting holes, and the two auxiliary hoisting holes are fixedly connected with the fan-shaped base through connecting rods.

Further, the reinforcing mechanism comprises a reinforcing rib fixed in the X-axis direction of the fan-shaped base, the reinforcing rib is fixedly connected with the conical base, the reinforcing rib comprises a main vertical rib and two auxiliary vertical ribs, and the two auxiliary vertical ribs are respectively arranged on two sides of the main vertical rib.

Further, the main shaft lifting tool adopts a disc lifting lug lifting appliance, a clamp lifting appliance and a ring lifting appliance.

Compared with the prior art, the utility model has the beneficial effects that: through the setting of turning over the instrument, can effectually fix the position of main shaft at the turning over to the in-process, solve the problem of swaing that appears at the main shaft in-process of turning over, the security when having strengthened the main shaft greatly, and the main shaft is in unsettled state all the time at the main shaft in-process of turning over, also can not cause the damage to main shaft itself, make the main shaft can accomplish the action of turning over safely and stably, effectively protect the main shaft flange face to avoid the flange face impaired, can also protect other equipment and people's safety, the characteristics of security, reliability, rapidity.

Drawings

FIG. 1 is a schematic diagram of the working structure of the present utility model;

fig. 2 is a schematic structural view of the turning tool according to the present utility model.

In the figure: the main shaft 1, the first flange 2, the second flange 3, the main shaft lifting tool 4, the turning tool 5, the fan-shaped base 6, the hanging ring 7, the cone-shaped base 8, the auxiliary hanging hole 9, the main stud 10 and the auxiliary stud 11.

Detailed Description

In order that the objects and advantages of the utility model will become more apparent, the utility model will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In addition, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 can be understood by those skilled in the art according to the specific circumstances.

Referring to fig. 1 and 2, which are schematic structural diagrams of the present utility model, the present utility model discloses a main shaft turning tool of a large-scale francis turbine, which comprises a main shaft 1, wherein a first flange 2 and a second flange 3 are respectively fixed at two sides of the main shaft 1, the first flange 2 is used for connecting the main shaft 1 with a motor, the second flange 3 is used for connecting the main shaft 1 with a rotating wheel, a main shaft hoisting tool 4 is detachably connected to a side surface of the first flange 2, a turning tool 5 is detachably connected to a side surface of the second flange 3, the position of the main shaft 1 can be effectively fixed during the turning process by the turning tool 5, the flange surface of the main shaft 1 is effectively protected from being damaged, and the safety of other devices and people can be also protected.

Specifically, the connection of the turning tool 5 and the second flange 3 is utilized, and the connection of the main shaft hoisting tool 4 and the first flange 2 is matched, so that the position of the main shaft 1 can be effectively fixed in the turning process, the swinging problem of the main shaft 1 in the turning process is prevented, the flange surface of the main shaft 1 is effectively protected from being damaged, and the safety of other equipment and people can be further protected.

In actual use, in the turning process of the spindle 1, two bridge machines are used simultaneously, the No. 1 bridge machine is used for controlling the spindle 1 to swing horizontally, the No. 2 bridge machine is used for controlling the spindle 1 to swing horizontally, a turning tool 5 is arranged on the side surface of a second flange 3, a spindle hoisting tool 4 is arranged on the side surface of a first flange 2, the spindle hoisting tool 4 adopts the prior art (auxiliary tool provided by a manufacturer), and the spindle hoisting tool 4 can adopt a disc lifting lug, a clamp lifting tool and a ring lifting tool;

the lifting hook of the No. 1 bridge crane is connected with the side face of the first flange 2 through a main shaft lifting tool 4, the lifting hook turning-over tool 5 of the No. 2 bridge crane is connected with the side face of the second flange 3, the No. 1 bridge crane and the No. 2 bridge crane slowly lift up when the main shaft 1 turns over, the main shaft 1 is gradually lifted to be separated from a main shaft 1 supporting tool, after the main shaft 1 is separated from the supporting tool, the No. 1 bridge crane slowly lifts up, the No. 2 bridge crane slowly descends, the main shaft 1 is gradually pulled up to be in a vertical state, the connected part of the main shaft 1 and the No. 2 bridge crane swings forwards due to inertia, at the moment, the No. 2 bridge crane gradually descends the main hook, the pull force of the bridge crane is used for counteracting the forward power of the main shaft 1 due to inertia, and the main shaft 1 cannot swing in the turning-over process.

The turning tool 5 comprises a positioning mechanism, a hoisting mechanism and a reinforcing mechanism, wherein the positioning mechanism is provided with the hoisting mechanism, the hoisting mechanism is fixedly connected with the reinforcing mechanism, the positioning mechanism can enable the turning tool 5 to be in positioning connection with the side face of the second flange 3, the hoisting mechanism can assist the main shaft hoisting tool 4 to be completely separated from the ground in the turning process of the main shaft 1, the main shaft 1 body cannot be damaged, and the reinforcing mechanism can increase the bearing capacity of the turning tool 5.

Specifically, positioning mechanism can be used for turning over instrument 5 to install on the side of second flange 3, fixes a position, and hoist mechanism can be convenient for the lifting hook of bridge machine hang, and strengthening mechanism can increase the bearing capacity of turning over instrument 5, improves the stability of turning over instrument 5.

Referring to fig. 2, the positioning mechanism includes a fan-shaped base 6, screw holes are respectively and fixedly arranged at two sides of the fan-shaped base 6 near edges, bolts are screwed on the screw holes, and the size of the two screw holes and the distance between the two screw holes are the same as the size of the screw hole on the second flange 3 and the distance between the adjacent screw holes on the second flange 3.

Specifically, the shape characteristics of the fan-shaped base 6 are utilized, the fan-shaped base 6 and the side face of the second flange 3 can be conveniently connected, screw holes of the second flange 3 are directly utilized, screw holes are respectively and fixedly arranged at two sides of the fan-shaped base 6 close to the edge, and the fan-shaped base 6 and the side face of the second flange 3 can be positioned and fixed by bolts.

Referring to fig. 2, the lifting mechanism includes a lifting ring 7, a conical base 8 and two auxiliary lifting holes 9, the lifting ring 7 is fixedly mounted on the conical base 8 in the Y-axis direction, the lifting ring 7 is disposed between two screw holes, the conical base 8 is fixed on the fan-shaped base 6, the auxiliary lifting holes 9 are respectively disposed at two sides of the conical base 8, and the two auxiliary lifting holes 9 are fixedly connected with the fan-shaped base 6 through connecting rods.

Specifically, the conical base 8 is utilized to enable the position of the hanging ring 7 to be in a more powerful stress point, so that the stress uniformity of the main shaft 1 is ensured when the hanging hook of the bridge crane is hung, and simultaneously, the two auxiliary hanging holes 9 are matched, so that three-point positioning can be formed with the hanging ring 7, stress hanging is carried out, and the stress uniformity of the main shaft 1 is further improved.

Referring to fig. 2, the reinforcing mechanism includes a reinforcing rib fixed on the fan-shaped base 6 along the X-axis direction, and the reinforcing rib is fixedly connected with the cone-shaped base 8, and the reinforcing rib includes a primary stud 10 and two secondary studs 11, where the two secondary studs 11 are respectively disposed on two sides of the primary stud 10.

Specifically, the setting of strengthening rib is utilized, can realize connecting between conical base 8 and the fan-shaped base 6 and get people's stability, and the strengthening rib includes main upright muscle 10 and two vice upright muscle 11 simultaneously, and two vice upright muscle 11 set up respectively in main upright muscle 10 both sides, can realize dispersion effort effect, prevent that conical base 8 and fan-shaped base 6 junction from appearing damaging, improve the security that whole device used.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will be within the scope of the present utility model.

The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the utility model; various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a large-scale axial flow propeller turbine main shaft instrument of standing up, includes the main shaft, main shaft both sides are fixed with first flange and second flange respectively, first flange is used for the main shaft to be connected with the motor, the second flange is used for the main shaft to be connected with the runner, can dismantle on the first flange side and be connected with main shaft lifting means, a serial communication port, can dismantle on the second flange side and be connected with the instrument of standing up, the instrument of standing up includes positioning mechanism, lifting mechanism and strengthening mechanism, be equipped with lifting mechanism on the positioning mechanism, and lifting mechanism is connected with fixedly connected with strengthening mechanism with positioning mechanism, positioning mechanism can make the instrument of standing up be connected with the location of second flange side.

2. The turning tool for the main shaft of the large-scale axial-flow propeller turbine according to claim 1, wherein the positioning mechanism comprises a fan-shaped base, screw holes are respectively and fixedly arranged at two sides of the fan-shaped base close to the edges, bolts are screwed on the screw holes, and the size of the two screw holes and the distance between the two screw holes are the same as those of the screw holes on the second flange and the distance between the adjacent screw holes on the second flange.

3. The large-scale axial flow turbine main shaft turning tool according to claim 2, wherein the hoisting mechanism comprises a hoisting ring, a conical base and two auxiliary hoisting holes, the hoisting ring is fixedly installed on the conical base in the Y-axis direction, the hoisting ring is arranged between the two screw holes, the conical base is fixed on the fan-shaped base, the two sides of the conical base are respectively provided with the auxiliary hoisting holes, and the two auxiliary hoisting holes are fixedly connected with the fan-shaped base through a connecting rod.

4. The tool for turning over a main shaft of a large-scale axial flow propeller turbine according to claim 3, wherein the reinforcing mechanism comprises a reinforcing rib fixed in the X-axis direction of the fan-shaped base, and the reinforcing rib is fixedly connected with the cone-shaped base, and comprises a main stud and two auxiliary studs, and the two auxiliary studs are respectively arranged on two sides of the main stud.

5. The large-scale francis turbine main shaft turning tool according to any one of claims 1 to 4, wherein the main shaft lifting tool adopts a disk lifting lug lifting tool, a clamp lifting tool and a ring lifting tool.