CN216129186U

CN216129186U - Steam turbine bearing overhauls equipment of lifting by crane

Info

Publication number: CN216129186U
Application number: CN202121130917.5U
Authority: CN
Inventors: 姜自国
Original assignee: Huaneng Chaohu Power Generation Co Ltd
Current assignee: Huaneng Chaohu Power Generation Co Ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2022-03-25
Anticipated expiration: 2031-05-25

Abstract

The utility model relates to the field of steam turbine bearing maintenance of a thermal power plant, and discloses steam turbine bearing maintenance hoisting equipment which comprises an upper beam, a lower beam and a main frame, wherein the lower beam is longer than the upper beam, one end of the upper beam is aligned with one end of the lower beam and is vertically connected with the main frame, two hoisting structures are arranged on the upper surface of the upper beam, a hoisting ring is arranged on the lower surface of one end of the lower beam, which is far away from the main frame, an anti-skid blocking frame is arranged on the upper surface of one end of the lower beam, which is far away from the main frame, and reinforcing ribs are obliquely arranged between the main frame and the upper beam and between the lower beam; through the equipment, when the steam turbine does not uncover the cylinder and does not dismantle the pipeline, the bearing box or the bearing can be directly lifted out for maintenance, and the temporary maintenance requirements of on-site steam turbine bearings and the maintenance requirements of various size maintenance can be met.

Description

Steam turbine bearing overhauls equipment of lifting by crane

Technical Field

The utility model relates to the field of steam turbine bearing maintenance of thermal power plants, in particular to steam turbine bearing maintenance hoisting equipment.

Background

At present, new energy power generation such as wind power generation and photovoltaic generation occupies a large electric power market capacity, peak shaving times of a coal-electric set are obviously increased, the set is started and stopped for many times every year, equipment maintenance amount is large, a bearing of a steam turbine generator set is not exceptional, maintenance times are large, and most of the new energy power generation is maintained under the condition that a steam turbine does not uncover a cylinder (or has a pipeline block). Because the bearing of the steam turbine generator unit is positioned in the hollow cavity of the outer cylinder of the steam turbine, the bearing needs to be disassembled during each maintenance, the upper half part of the bearing box and the upper and lower bodies of the bearing need to be lifted out, the maintenance position of the bearing is narrow and small under the condition that the steam turbine does not take off the cylinder and does not remove a pipeline, the lifting difficulty of a common lifting tool is high, the common lifting tool cannot be directly lifted, the maintenance work is difficult to complete, and the maintenance efficiency is extremely low.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that the existing steam turbine bearing of the thermal power plant cannot be directly lifted and the bearing overhauling efficiency is low, the utility model provides the steam turbine bearing overhauling and lifting equipment, which can reduce the overhauling and lifting difficulty of the steam turbine bearing of the thermal power plant, improve the bearing overhauling efficiency, shorten the overhauling time and solve the trouble in the bearing overhauling work.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a steam turbine bearing overhauls equipment of lifting by crane, includes upper beam, underbeam and main frame, the underbeam is than the upper beam is long, the one end of upper beam with the one end of underbeam align and all with the main frame is connected perpendicularly, the upper beam upper surface is provided with two and lifts by crane the structure, the lower surface that main frame one end was kept away from to the underbeam is provided with a rings.

In some embodiments of the present application, the bail is free to rotate on the lower beam. In some embodiments of the present application, an anti-skid frame is further disposed on an upper surface of one end of the lower beam, which is far away from the main frame.

In some embodiments of the present application, a plurality of first reinforcing ribs are obliquely installed between the upper beam and the main frame, and a plurality of second reinforcing ribs are obliquely installed between the lower beam and the main frame.

In some embodiments of the present application, the first reinforcing bead is two, and the second reinforcing bead is two.

In some embodiments of the present application, the material of the upper beam, the lower beam and the main frame is i-steel or channel steel.

In some embodiments of the present application, the material of the reinforcing bar is i-steel or channel steel.

According to the utility model, I-shaped steel or channel steel is welded into a [ -shaped structure, four (two upper and lower) diagonal reinforcing ribs are welded to increase the hoisting strength, the tool is designed to be that the lower beam is longer than the upper beam, and the hoisting ring and the anti-skidding blocking frame are designed on the lower beam, so that when a steam turbine does not uncover a cylinder and does not dismantle a pipeline, a bearing box or a bearing in a hollow pit can be directly hoisted, and the maintenance efficiency of the bearing is improved.

Drawings

FIG. 1 is a schematic diagram of a steam turbine bearing overhaul lifting device according to an embodiment of the utility model;

in the figure, 1, a main frame; 2. an upper beam; 3. a lower beam; 4. a hoisting structure; 5. a hoisting ring; 6. an anti-slip stopper; 7. and (5) reinforcing ribs.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1, in some embodiments of the present application, a steam turbine bearing overhaul lifting apparatus includes an upper beam 2, a lower beam 3, and a main frame 1, wherein the length of the lower beam 3 is longer than that of the upper beam 2, one end of the upper beam 2 and one end of the lower beam 3 are aligned, the main frame 1 is vertically connected to the aligned upper beam 2 and lower beam 3, that is, the upper beam 2, the lower beam 3, and the main frame 1 are welded into a "[" shape structure, two lifting structures 4 are provided on the upper surface of the upper beam 2, a lifting ring 5 is provided on the lower surface of the lower beam 3 away from the end connected to the main frame 1, the lifting ring 5 can freely rotate on the lower beam 3, and the lifting ring 5 is provided at a section where the lower beam 3 is longer than the upper beam 2.

The lower beam 3 is arranged to be longer than the upper beam 2, the hanging ring 5 is arranged on the lower beam 3, so that the part of the lower beam 3, which is longer than the upper beam 2, extends to the bearing box in the hollow nest, the bearing box and the bearing are connected with the hanging ring 5 through the hanging rope, the hoisting ring 5 can rotate freely, the bearing can be connected with the hoisting ring 5 more conveniently, the whole bearing can be hoisted out for maintenance by hoisting a hoisting tool, the height of the hoisting tool (namely the height of the main frame 1) and the length of the upper and lower beams 3 are determined according to the position of the maintenance bearing, the maintenance and hoisting space is determined according to the specific maintenance and hoisting space, the maintenance space of the bearing at different positions is different, therefore, the height of the ascending space needs to be reserved as much as possible, the bearing box is ensured to vertically ascend about one meter and horizontally rotate by more than 90 degrees, and the bearing box or the bearing can be laterally transversely moved and hung out; the bearing capacity of the hoisting structure 4 is at least 10 tons, so that after the hoisting tool hoists the bearing box or the bearing, the hoisting structure 4 can bear the weight of the bearing box or the bearing and the hoisting structure 4.

In some embodiments of the present application, the upper surface of the end of the main frame 1 away from the lower beam 3 is further provided with an anti-slip frame 6, the anti-slip frame 6 is also arranged at a section of the lower beam 3 longer than the upper beam 2, the strength of the anti-slip frame 6 is set to be not less than 10 tons, by arranging the anti-slip frame 6, the stable connection of the bearing box or the bearing and the hoisting tool can be further realized, the bearing box or the bearing is simultaneously connected with the hoisting ring 5 and the anti-slip frame 6, and the hoisting strength of the hoisting tool can be ensured.

In some embodiments of the present application, four reinforcing ribs 7 are further disposed on the lifting tool, wherein two first reinforcing ribs 7 are obliquely disposed between the upper beam 2 and the main frame 1, and two second reinforcing ribs 7 are obliquely disposed between the lower beam 3 and the main frame 1; the structure of the lifting frame can be more stable by adding the mounting reinforcing ribs 7, and the lifting strength of the lifting tool is also increased.

In some embodiments of the application, the main frame 1 and the reinforcing ribs 7 of the steam turbine bearing overhauling hoisting tool are made of I-shaped steel or channel steel of section steel, the I-shaped steel and the channel steel are large in top and bottom area, and are larger in bending moment and stronger in bearing capacity than other section materials.

To sum up, the embodiment of the utility model provides a steam turbine bearing overhauling and hoisting device, which is characterized in that an upper beam, a lower beam and a main frame are welded into a [ -shaped structure, wherein the length of the lower beam is longer than that of the upper beam, a hoisting ring and an anti-skid blocking frame are arranged on the part of the lower beam, which is longer than the upper beam, respectively, when a bearing needs to be overhauled, an external crane is connected with the hoisting structure of a hoisting tool through a steel wire rope or a metal sling, the part of the lower beam, which is longer than the upper beam, is placed at a bearing box at a hollow position, the bearing box or a bearing is connected with the hoisting ring (and/or the anti-skid blocking frame) through a steel wire hoisting rope or the metal sling, the hoisting tool is hoisted by the crane, the bearing box is hoisted by the hoisting tool for overhauling, and by using the bearing hoisting tool, when a steam turbine does not take off a cylinder and does not dismantle a pipeline, the bearing can be directly hoisted for overhauling, and the overhauling condition of the steam turbine bearing is met, the temporary maintenance of the turbine bearing on site and the maintenance requirements of various large and small maintenance are met.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a steam turbine bearing overhauls equipment of lifting by crane, its characterized in that includes upper beam, underbeam and main frame, the underbeam is longer than the upper beam, the one end of upper beam with the one end of underbeam aligns and all with the main frame is connected perpendicularly, the upper beam upper surface is provided with two and lifts by crane the structure, the lower surface that main frame one end was kept away from to the underbeam is provided with a rings.

2. The steam turbine bearing service lifting apparatus of claim 1 wherein said slings are freely rotatable on said lower beam.

3. The steam turbine bearing overhaul lifting equipment of claim 1, wherein the upper surface of the end of the lower beam remote from the main frame is further provided with an anti-skid block frame.

4. The steam turbine bearing overhaul lifting equipment as claimed in claim 2, wherein a plurality of first reinforcing ribs are obliquely installed between the upper beam and the main frame, and a plurality of second reinforcing ribs are obliquely installed between the lower beam and the main frame.

5. The steam turbine bearing overhaul lifting apparatus of claim 4, wherein the number of the first reinforcing ribs is two and the number of the second reinforcing ribs is two.

6. The steam turbine bearing overhaul lifting apparatus of any one of claims 1 to 5, wherein the upper, lower and main frames are made of I-steel or channel steel.

7. The turbine bearing overhaul lifting device of any one of claims 4 to 5 wherein the reinforcing bars are made of I-steel or channel steel.