CN111943104B

CN111943104B - Auxiliary lifting equipment for overhauling rotating part of steam turbine and using method thereof

Info

Publication number: CN111943104B
Application number: CN202010812972.6A
Authority: CN
Inventors: 白玉标
Original assignee: Datang Shandong Electric Power Overhaul and Operation Co Ltd
Current assignee: Datang Shandong Electric Power Overhaul and Operation Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-11-05
Anticipated expiration: 2040-08-13
Also published as: CN111943104A

Abstract

The utility model provides a steam turbine rotating part overhauls uses supplementary lifting means and application method thereof, scheme greatly reduced suspend turbine spare part in midair and overhaul required vertical space, environmental adaptability strengthens greatly, can draw close each other or keep away from and the transform and the adjustment of position from top to bottom, make same equipment can be quick fix to the turbine spare part of different lower band sum models and lift by crane, improve maintenance efficiency, the design that adopts portable and inclined plane to lift, whole equipment removes to the bottom of great spare part, then lift by crane of great spare part through the mode on propelling movement inclined plane, can overhaul work with the dismouting scene again, the maintenance cost of turbine has been practiced thrift greatly.

Description

Auxiliary lifting equipment for overhauling rotating part of steam turbine and using method thereof

Technical Field

The disclosure relates to the technical field of turbine maintenance, in particular to auxiliary lifting equipment for turbine rotating part maintenance and a using method thereof.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The steam turbine is also called as steam turbine engine, and is a rotary steam power device, and the high-temperature high-pressure steam is passed through fixed nozzle, becomes accelerated air flow, and is sprayed on the blade to make the rotor equipped with blade row rotate, and can apply work to exterior at the same time.

The inventor finds that because the steam turbine is huge, the bridge crane is adopted to hoist the steam turbine rotor when the steam turbine rotor is overhauled, however, because the specification of the steam turbine is different, the size of the steam turbine rotor is also different, when in overhaul, the required hoisting equipment is different, which results in that the same hoisting equipment can not hoist the turbine rotors with different sizes, meanwhile, the method used in the overhaul of the turbine industry is generally designed in a suspension type, when the rotors with different sizes are overhauled, the heights to be hoisted are different, and in an indoor environment, for large hoisting equipment, space usage is limited, and therefore, during the turbine overhaul process, how to overhaul the turbine parts of different sizes in a limited space is a big problem of ensuring the safe and effective operation of power generation.

Disclosure of Invention

In order to solve the problems, the utility model provides a steam turbine rotating part overhauls and uses supplementary lifting means and application method thereof, scheme greatly reduced suspends the turbine spare part in midair and overhauls required vertical space, and environmental adaptability strengthens greatly, can draw close each other or keep away from and the transform and the adjustment of upper and lower position for same equipment can be quick fix the lift by crane the turbine part of different belts and models, improves maintenance efficiency.

According to a first aspect of the embodiment of the disclosure, an auxiliary lifting device for overhauling a rotating part of a steam turbine is provided, which comprises an aggravating base, wherein two sides of the top of the aggravating base are provided with adjusting cavities, an interval control mechanism and a grabbing and lifting mechanism are arranged in each adjusting cavity, and the interval control mechanism is arranged in an inner cavity of each adjusting cavity; the grabbing and lifting mechanism is vertically fixed on the translation table of the interval control mechanism and comprises a limiting fixing column and a turning column.

Further, interval control mechanism includes translation lead screw and translation platform, the translation lead screw runs through the inner chamber in adjustment chamber, the output shaft of shaft coupling and driving motor is passed through to the one end of translation lead screw, the translation lead screw passes the translation platform drives the translation platform and is fixed in the last snatching of translation platform lifts mechanism horizontal motion.

Furthermore, the translation screw rod comprises a first translation screw rod and a second translation screw rod, the first translation screw rod is connected with an output shaft of the driving motor through a coupler, the second translation screw rod is connected with the end part of the first translation screw rod through a belt, and the first translation screw rod drives the second translation screw rod to move synchronously while moving.

Further, interval control mechanism still includes lifting pump and turns to the panel, lifting pump is fixed in translation bench, turn to the panel and pass through translation platform both sides otic placode is fixed in translation bench, it realizes rotatoryly through lifting the pump to turn to the panel.

Furthermore, the grabbing and lifting mechanism comprises a limiting fixing column and a turning column, the limiting fixing column is fixed on the translation table, and the turning column is movably connected with the limiting fixing column through a movable shaft.

Furthermore, the side of the limiting fixing column is fixed with a lifting plate, the lifting plate is fixed with a hydraulic pump, the limiting fixing column is provided with a lifting groove and a transverse groove, a telescopic rod of the hydraulic pump is fixedly connected with the lifting plate, and one side of the lifting plate, which is close to the lifting groove, is fixed with a clamping ring.

Furthermore, the upset post is provided with the lift groove, the upset post outside is provided with the joint claw, the joint claw is close to one side of upset post is connected with the one end of atress axle, the atress axle runs through the lift groove of upset post and spacing fixed column, the other end of atress axle with the joint ring joint is fixed.

Furthermore, the bottom of the weighting base is provided with universal wheels, the limiting fixing column is an L-shaped column, the clamping claw is a U-shaped claw, and the transverse groove is communicated with the lifting groove on the limiting fixing column.

According to a second aspect of the embodiments of the present disclosure, there is provided a method for using the auxiliary lifting device for overhauling a rotating component of a steam turbine, which includes the following steps:

rotating the turning column for a certain angle to lap the turning column on the steering panel; moving the auxiliary lifting equipment to a steam turbine, and adjusting the horizontal position of the grabbing and lifting mechanism through the translation screw rod according to the size of the steam turbine; starting the hydraulic pump, pushing a lifting plate to move upwards, and pushing the clamping claws to clamp the two ends of the steam turbine by the lifting plate through the stress shaft; and starting the lifting pump, wherein the lifting pump pushes the turning column to be continuously close to the limiting fixing column through the steering panel.

Further, in the overturning process of the overturning column, the hydraulic pump continuously works; the turning column is matched with the turning panel to continuously rotate to a vertical angle at an inclined angle until the turning column returns to a vertical state, and the turbine is gradually lifted to a set height by means of mutual matching of the turning column and the turning panel.

Compared with the prior art, the beneficial effect of this disclosure is:

(1) this steam turbine rotating part overhauls uses supplementary lifting means, when carrying out the turbine part and overhauls the hoist, hold up spare part from bottom to top, greatly reduced promptly suspends turbine part in midair and overhauls required vertical space, environmental adaptability strengthens greatly.

(2) This steam turbine rotating part overhauls uses supplementary lifting means, with the lead screw rotatory and in the design of cylinder propelling movement on vertical on horizontal, can draw close each other or keep away from and the transform and the adjustment of position from top to bottom on the whole for same equipment can be quick fix the lift by crane with the turbine part of model under the different belts, improves maintenance efficiency.

(3) This steam turbine rotating parts overhauls uses supplementary lifting means, adopt the design that portable and inclined plane lift, whole equipment removes the bottom to great spare part, then carry out lifting by crane of great spare part through the mode on propelling movement inclined plane, can overhaul work in order to dismouting scene again, the cost of overhaul of turbine has been practiced thrift greatly, the upset post cooperation is turning to the panel and is constantly rotating to vertical angle with inclination, when promoting steam turbine equipment, can reply in real time according to the steam turbine position and the package room height of trouble, when being too close to between steam turbine and the ground, can lift through changing inclination, rely on the height that the mutually supporting of upset post and steering panel changes the steam turbine.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic structural diagram of an auxiliary lifting apparatus according to a first embodiment of the present disclosure;

fig. 2 is a left side view of the structure of an auxiliary lifting device according to a first embodiment of the present disclosure;

fig. 3 is a structural sectional view of an auxiliary lifting device according to a first embodiment of the present disclosure;

FIG. 4 is an enlarged fragmentary view of a cross-sectional view of the structure illustrated in FIG. 3;

wherein, 1, aggravate the base, 2, the adjustment chamber, 3, interval control mechanism, 301, translation lead screw, 302, driving motor, 303, the belt, 304, the translation platform, 305, the lifting pump, 306, steering panel, 4, snatch lifting mechanism, 401, spacing fixed column, 402, the upset post, 403, the lift groove, 404, atress axle, 405, joint claw, 406, the lifting board, 407, the hydraulic pump, 408, the lifter plate, 409, the joint ring, 410, the cross slot, 411, the adjusting bolt, 5, the universal wheel.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The first embodiment is as follows:

the purpose of this embodiment is to provide a steam turbine rotating parts overhauls and uses supplementary lifting means.

An auxiliary lifting device for overhauling a rotating part of a steam turbine comprises:

as shown in fig. 1, a schematic structural diagram of the auxiliary lifting device in this embodiment is shown; 2-4 show a left side view, a cross-sectional view and a partial enlarged view of the construction of the auxiliary lifting device;

with reference to fig. 1 to 4, the auxiliary lifting device for overhauling the rotating part of the steam turbine is described in detail in this embodiment, and specifically the auxiliary lifting device includes an weighted base 1, an adjusting cavity 2, a spacing control mechanism 3, and a grabbing and lifting mechanism 4, wherein the adjusting cavity 2 is disposed on two sides of the top of the weighted base 1, the spacing control mechanism 3 is disposed in an inner cavity of the adjusting cavity 2, and the grabbing and lifting mechanism 4 is disposed on the top of the spacing control mechanism 3;

further, the grabbing and lifting mechanism 4 comprises a limiting fixed column 401, an overturning column 402, a lifting groove 403, a stressed shaft 404, a clamping claw 405, a lifting plate 406, a hydraulic pump 407, a lifting plate 408, a clamping ring 409, a transverse groove 410 and an adjusting bolt 411, the bottom of the overturning column 402 is movably connected with the bottom of the limiting fixed column 401 through a balance bolt, the lifting groove 403 is arranged at the top of the side surfaces of the limiting fixed column 401 and the overturning column 402, the stressed shaft 404 is installed in an inner cavity of the lifting groove 403 in a penetrating manner, one side of the clamping claw 405 is fixedly welded with one end of the stressed shaft 404 far away from the limiting fixed column 401, one side of the lifting plate 406 is fixedly welded with the side surface of the limiting fixed column 401, the hydraulic pump 407 is installed at the top of the lifting plate 406, one side of the lifting plate 408 far away from the lifting groove 403 is fixedly connected with the side surface of the hydraulic pump 407, one side of the clamping ring is fixedly welded with one side of the lifting plate 408 close to the lifting groove 403, the transverse groove 410 is formed in the front face of the limiting fixing column 401, and the adjusting bolt 411 is installed at the top of the turning column 402 in a penetrating mode;

further, the spacing control mechanism 3 comprises a translation screw rod 301, a driving motor 302, a belt 303, a translation table 304, a lifting pump 305 and a steering panel 306, the translation screw rod 301 is installed in the inner cavity of the adjustment cavity 2 in a penetrating manner, an output shaft of the driving motor 302 is fixedly connected with one end of the translation screw rod 301 through a coupling, the belt 303 is installed on an outer ring of the translation screw rod 301 through a wheel disc, the translation table 304 is sleeved on the outer ring of the translation screw rod 301, the lifting pump 305 is installed at the top of the translation table 304, and the bottom of the steering panel 306 is installed on the back of the top of the translation table 304 through an ear plate;

further, universal wheels 5 are installed at four corners of the bottom of the weighting base 1, the limiting fixing columns 401 are L-shaped columns, the clamping claws 405 are U-shaped claws, the back surfaces of the transverse grooves 410 are communicated with lifting grooves 403 in the limiting fixing columns 401, the bottoms of the adjusting bolts 411 penetrate through the turnover columns 402 and extend to inner cavities of the lifting grooves 403, the adjusting bolts 411 are threaded bolts, and the clamping rings 409 are semi-split rings.

The auxiliary lifting equipment for the steam turbine maintenance in the embodiment supports the parts from bottom to top when the steam turbine parts are maintained and lifted, so that the longitudinal space required for maintaining the suspended steam turbine parts is greatly reduced, and the environmental adaptability is greatly enhanced; the auxiliary lifting equipment for overhauling the rotating parts of the steam turbine has the advantages that the design of rotating by the lead screw in the transverse direction and pushing by the cylinder in the longitudinal direction can be realized, and the mutual approaching or separating and the transformation and adjustment of the upper position and the lower position can be realized on the whole, so that the same equipment can quickly fix and lift the steam turbine parts with different belts and models, and the overhauling efficiency is improved; this steam turbine rotating parts overhauls uses supplementary lifting means adopts the design that portable and inclined plane lift, and whole equipment removes the bottom to great spare part, then carries out lifting by crane of great spare part through the mode on propelling movement inclined plane, can overhaul work in order to dismouting scene again, has practiced thrift the maintenance cost of turbine greatly.

Example two:

the purpose of this embodiment is to provide a method for using of the above-mentioned auxiliary hoisting equipment for steam turbine rotating part overhaul.

A use method of auxiliary lifting equipment for overhauling a rotating part of a steam turbine comprises the following steps:

The specific using method is described in detail with reference to the accompanying drawings, in the specific using process, firstly, the rotatable turning column 402 is rotated by a certain angle and is overlapped on the top of the turning panel 306, then the whole device is moved to the position of the turbine, the driving motor 302 is started according to the size of the turbine, the output shaft of the driving motor 302 drives the translation screw rod 301 to rotate, the translation screw rod 301 drives the translation platform 304 and the grabbing and lifting mechanism 4 on the translation screw rod to move close to or away from each other when rotating, finally, the adjusting bolt 411 is pulled out of the turning column 402, the hydraulic pump 407 is started, the hydraulic pump 407 pushes the lifting plate 408 to move upwards, the lifting plate 408 pushes the force bearing shaft 404 and the clamping claw 405 to continuously approach to the two sides of the turbine until the turbine is completely clamped, then the lifting pump 305 is started, the lifting pump 305 pushes the turning panel 306 and the turning column 402 to continuously approach the limiting fixing column 401, during this rollover, the hydraulic pump does not stop working; when the turning column is turned over, the steam turbine is gradually lifted to be far away from the ground until the steering panel 306 and the turning column 402 become vertical; the turnover column is cooperated with the turning panel to continuously rotate to a vertical angle through an inclination angle, when the steam turbine equipment is lifted, real-time coping can be carried out according to the position of the steam turbine with a fault and the height of a bag room, namely, when the distance between the steam turbine and the ground is too close, the lifting can be carried out through changing the inclination angle, and the height of the steam turbine is changed by means of the mutual matching of the turnover column and the turning panel.

The auxiliary lifting equipment for overhauling the rotating part of the steam turbine and the using method thereof provided by the embodiment can be completely realized, and have wide application prospects.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.

Claims

1. The auxiliary lifting equipment for overhauling the rotating part of the steam turbine is characterized by comprising a weighting base, wherein two sides of the top of the weighting base are provided with adjusting cavities, an interval control mechanism and a grabbing and lifting mechanism are arranged in each adjusting cavity, and the interval control mechanism is arranged in an inner cavity of each adjusting cavity; the grabbing and lifting mechanism is vertically fixed on a translation table of the spacing control mechanism and comprises a limiting fixing column and a turning column; the side of spacing fixed column is fixed with the lifting plate, be fixed with the hydraulic pump on the lifting plate, be provided with lift groove and cross slot on the spacing fixed column, the telescopic link fixedly connected with lifter plate of hydraulic pump, the lifter plate is close to one side in lift groove is fixed with the joint ring.

2. The auxiliary lifting device for overhauling the rotating part of the steam turbine as claimed in claim 1, wherein the spacing control mechanism comprises a translation screw rod and a translation table, the translation screw rod penetrates through the inner cavity of the adjusting cavity, one end of the translation screw rod is connected with an output shaft of the driving motor through a coupling, and the translation screw rod penetrates through the translation table to drive the translation table and the grabbing and lifting mechanism fixed on the translation table to move horizontally.

3. The auxiliary lifting device for overhauling a rotating part of a steam turbine as claimed in claim 2, wherein the translation screw rod comprises a first translation screw rod and a second translation screw rod, the first translation screw rod is connected with the output shaft of the driving motor through a coupling, the second translation screw rod is connected with the end part of the first translation screw rod through a belt, and the first translation screw rod moves and drives the second translation screw rod to move synchronously.

4. An auxiliary lifting apparatus for overhauling a rotating part of a steam turbine as claimed in claim 1, wherein the spacing control mechanism further comprises a lift pump and a steering panel, the lift pump is fixed on the translation stage, the steering panel is fixed on the translation stage through ear plates at two sides of the translation stage, and the steering panel is rotated by the lift pump.

5. The auxiliary lifting equipment for overhauling a rotating part of a steam turbine as claimed in claim 1, wherein the grabbing and lifting mechanism comprises a fixed limiting column and a turning column, the fixed limiting column is fixed on the translation stage, and the turning column is movably connected with the fixed limiting column through a movable shaft.

6. The auxiliary lifting equipment for overhauling the rotating part of the steam turbine as claimed in claim 1, wherein the turning column is provided with a lifting groove and a transverse groove, the outer side of the turning column is provided with a clamping claw, one side of the clamping claw, which is close to the turning column, is connected with one end of a stress shaft, the stress shaft penetrates through the lifting grooves of the turning column and the limiting fixing column, and the other end of the stress shaft is fixedly clamped with the clamping ring.

7. The auxiliary lifting equipment for overhauling the rotating part of the steam turbine as claimed in claim 6, wherein the universal wheel is installed at the bottom of the weighting base, the limiting fixing column is an L-shaped column, the clamping claw is a U-shaped claw, and the transverse groove is communicated with the lifting groove on the limiting fixing column.

8. The use method of the auxiliary lifting equipment for overhauling the rotating part of the steam turbine as claimed in claim 6 or 7 is characterized by comprising the following specific steps:

rotating the turning column for a certain angle to lap the turning column on the steering panel; moving the auxiliary lifting equipment to a steam turbine, and adjusting the horizontal position of the grabbing and lifting mechanism through a translation screw rod according to the size of the steam turbine; starting a hydraulic pump, pushing a lifting plate to move upwards, and pushing the clamping claws to clamp the two ends of the steam turbine by the lifting plate through a stress shaft; and starting a lifting pump, wherein the lifting pump pushes the turning column to be continuously close to the limiting fixing column through a steering panel.

9. The method of using an auxiliary lifting apparatus for overhauling a rotating part of a steam turbine according to claim 8, wherein a hydraulic pump is continuously operated during the overturning of the overturning column; the turning column is matched with the turning panel to continuously rotate to a vertical angle at an inclined angle until the turning column returns to a vertical state, and the turbine is gradually lifted to a set height by means of mutual matching of the turning column and the turning panel.