CN217159500U

CN217159500U - Generator bottom underslung overhauls platform

Info

Publication number: CN217159500U
Application number: CN202220319931.8U
Authority: CN
Inventors: 吴永兵
Original assignee: Huaneng Wuhan Power Generation Co Ltd
Current assignee: Huaneng Wuhan Power Generation Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-08-09
Anticipated expiration: 2032-02-17

Abstract

The utility model relates to a generator technical field discloses a generator bottom overhung overhauls platform, including platform face and climbing frame in the maintenance platform, wherein the platform face sets up the downside at the generator base, and have certain distance apart from the base, the climbing has erect and has connected platform face and bottom surface, the workman enters into the platform face through climbing frame subaerial, examine and maintain the generator on the platform face, still just be provided with the mounted frame in addition and make the platform face in setting for the position, or make the platform face inlay the bearing wall at engine both sides, the scaffold who has solved the present use blocks escape way or installation difficulty scheduling problem.

Description

Generator bottom underslung overhauls platform

Technical Field

The utility model relates to a generator technical field especially relates to a generator bottom overhauls platform.

Background

At present, large-scale generators (300MW and above) of domestic large-scale thermal power, nuclear power and the like generally adopt hydrogen as a cooling medium. The bottom of a generating set produced by domestic east, hao and steam supply is generally provided with 5-10 manhole doors, and the height of each manhole door from the ground is 5-10 meters. The inspection is extremely unfavorable for the personnel of daily tour to go up to inspect, in case discover generator bottom manhole door leak hydrogen, need set up the wood of hands foot rest and just can carry out the construction. The bottom of the generator is generally provided with auxiliary facilities such as a closed bus and other oil systems and water systems. The scaffold is time-consuming, labor-consuming and unsafe to erect on site. The temporary scaffold needs to be erected upwards from the ground, so that the limited escape passage and maintenance passage at the bottom of the generator are blocked. Therefore, a permanent maintenance platform is designed, which is convenient for maintenance of the manhole door at the bottom of the generator and does not influence the safety maintenance of various devices below the generator.

SUMMERY OF THE UTILITY MODEL

In some embodiments of this application, for solving above-mentioned technical problem, a generator bottom overhung maintenance platform is provided, including platform face and climbing frame in the maintenance platform, wherein the platform face sets up the downside at the generator base, and have certain distance apart from the base, the climbing has erect and has connected platform face and bottom surface, the workman enters into the platform face through climbing frame subaerial on, examine and maintain the generator on the platform face, still just be provided with the mounted frame in addition and make the platform face in setting for the position, or make the platform face inlay in the bearing wall of engine both sides, the scaffold that has solved present use blocks escape way or installation difficulty scheduling problem.

In some embodiments of this application, a generator bottom overhung maintenance platform is disclosed, the generator is provided with the base, is provided with the manhole door on the base, the maintenance platform includes: the platform surface is arranged on the lower side of the base, and a certain distance is reserved between the platform surface and the base, so that a worker can enter the platform surface; the climbing frame, the one end of climbing frame with the platform face is connected, the other end of climbing frame is connected with ground.

Some embodiments of the present application further comprise: the suspension frame, the one end of suspension frame with the base is connected, the other end of suspension frame with the platform face is connected, the suspension frame is provided with a plurality ofly, and a plurality of balanced settings of suspension frame are in around the platform face.

In some embodiments of this application, suspend the cylinder that the frame is the I-steel structure in midair, the plane that the platform face was mated formation is carried out for the aluminium alloy material of fretwork.

In some embodiments of the present application, the other end of the climbing frame is connected to the ground by a bolt.

In some embodiments of the present application, the platform is spaced 1.5 meters from the base.

In some embodiments of the present application, the generator has load bearing walls on both sides, and both ends of the platform surface are embedded in the load bearing walls.

In some embodiments of the present application, the platform deck is fully paved by a hot-dip galvanized steel grid mesh.

In some embodiments of this application, the climbing frame is perpendicular cat ladder, the frame of cat ladder is two zinc-plated angle irons, the cross arm of cat ladder is seamless steel pipe.

The beneficial effects of the utility model reside in that:

through the arrangement of the platform surface and the climbing frame, workers enter the manhole door through climbing, the use of a scaffold frame is avoided, and when hydrogen leaks from the manhole door at the bottom of the generator, the workers directly carry an explosion-proof tool for processing; when the size of the generator is repaired and the safety condition is met, workers can conveniently enter the generator from a manhole door above the platform to be repaired; the generator is convenient for daily maintenance personnel to check the hydrogen leakage of the manhole door at the bottom of the generator; the inspection and maintenance of various oil, water, gas and other pipeline valves and welded junctions at the bottom of the generator are facilitated; when the generator is repaired, the soft connection between the outgoing line and the neutral point of the generator is conveniently removed; meanwhile, the bottom of the climbing frame is installed on the ground through the bolt, so that the climbing frame is convenient to disassemble and assemble.

Make the platform face through setting up two kinds of forms of hanging, one is used and suspends the frame in midair, and it is second makes the platform face imbed in the bearing wall, makes testing platform's stress point on upper portion, avoids influencing the maintenance and the operation of all kinds of equipment on the ground.

Drawings

FIG. 1 is a structural view of embodiment 1 of the present invention;

fig. 2 is a structural view of embodiment 2 of the present invention.

Reference numerals:

the method comprises the following steps: 100. a generator; 110. a load-bearing wall; 120. a wire outlet cover; 200. a platform surface; 210. a climbing frame; 220. a suspension frame.

Detailed Description

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

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, an overhung maintenance platform is provided at the bottom of a generator 100, where the generator 100 includes a base, the base of the generator 100 is higher than the ground by a certain distance, so that a worker may have difficulty directly reaching the bottom of the generator 100, and a certain tool is needed, and a manhole door is provided on the base, and is used for the worker to enter the generator 100 to maintain and inspect the generator 100.

In order to facilitate a worker to enter the generator 100, an overhaul platform is arranged at the bottom of the generator 100, the overhaul platform comprises a platform surface 200 and a climbing frame 210, the platform surface 200 is arranged at the lower side of a base, the platform surface 200 and the base have a certain distance, and the distance is changed to enable the worker to enter the platform surface 200.

In some embodiments of the present application, the distance from the platform surface 200 to the bottom of the generator 100 is 1.5 meters, which facilitates direct disassembly of bolts of the manhole door at the bottom of the generator 100 and cover plates of the manhole door by workers. And the head can be directly extended into the manhole to check the internal condition of the generator 100.

In addition, the platform surface 200 is a structure of a hot galvanizing grid net full pavement.

In some embodiments of the present application, one end of the climbing frame 210 is connected to the platform surface 200, the other end of the climbing frame 210 is connected to the ground, and the other end of the climbing frame 210 is connected to the ground through a bolt.

In a specific embodiment of this application, climbing frame 210 is perpendicular cat ladder, and the frame of cat ladder is two galvanized angle irons, and the cross arm of cat ladder is seamless steel pipe's size for long 30mm, external diameter 20mm, internal diameter 15 mm.

In some embodiments of the present application, there are various embodiments regarding the support location of the platform.

Example 1:

the maintenance platform still is provided with and suspends frame 220 in midair, and the one end that suspends frame 220 in midair is connected with the base, and the other end that suspends frame 220 in midair is connected with platform face 200, and suspends in midair and adds and be provided with a plurality ofly, and a plurality ofly suspend the setting of 220 balance in midair around platform face 200, and the frame 220 that suspends in midair simultaneously still sets up to the cylinder of I-steel construction, and platform face 200 carries out the plane of mating formation for the aluminium alloy material of fretwork.

The transportation support legs at two sides of the bottom of the stator shell of the generator 100 are used for suspension welding installation; the welded bottom platform of the generator 100 can be integrally lifted along with the stator of the generator 100 without being influenced; the welded generator 100 bottom platform should be paved by hollow aluminum alloy, so that the self weight of the suspension platform is reduced.

Also provided is a specific embodiment of the 300MW generator 100 produced by Ha Bing electric machine factory, wherein the length of the bottom of the generator 100 is 5 m. Wherein overhaul the platform and include:

firstly, evenly installing suspension frames 22010 (5 suspension frames at two sides, the length of the suspension frames is 1.5 meters, and the suspension frames are made of channel steel Q23510 and welded on a supporting leg at the bottom of the generator 100).

Secondly, the frame is welded and installed around the suspension bracket 220 for 2.5 h 5m (the material is that channel steel Q23510 is selected and welded with the rotary suspension bracket).

Thirdly, paving a hot-galvanized steel grid net in the frame formed by the suspension frame 220, 2500 ANG 5000 ANG 3 mm; the overall load-bearing requirements of the hanger 220 are: not less than 2000KG

And fourthly, designing a vertical ladder stand at the corner of the platform of the suspension frame 220, so that the operation and maintenance personnel can conveniently check and maintain.

The ladder stand is connected with the ground and the suspension platform through bolts, so that the stator shell of the generator 100 can be lifted integrally.

Example 2:

as shown in fig. 2, when the embodiment is applied to the generator outlet cover 120, the bearing wall 110 is provided around the outlet cover 120 of the generator, two sides of the platform surface 200 are embedded into the inverted bearing wall 110, and the platform surface 200 is supported by the bearing wall 110 to be in the high position.

In addition, the platform surface 200 is formed by using two galvanized angle irons (47 h 4mm) with the length of 3.5 meters as frames, two ends of the angle irons are directly embedded into the bearing walls 110 on two sides of the generator 100, and a hot galvanized steel grid net is fully paved.

It should be noted that in daily production, workers need to enter the generator 100 to perform various operations, and the generator outlet cover 120 manhole door needs to be frequently climbed to check whether bolts leak hydrogen or not in daily maintenance; the temperature measuring points in the generator outgoing line cover 120 need to be frequently climbed to check whether the temperature measuring points are correct or not in daily maintenance; the three-phase outgoing line CT of the generator 100 needs to climb up frequently for CT test and maintenance in daily maintenance; through setting up the cat ladder, be convenient for the workman enter into and carry out multiple operation in the platform face 200, and utilize bearing wall 110 supporting platform face 200, make platform face 200 need not utilize generator 100 part to support, also need not ground to support, avoided building to overhaul the platform and caused the influence to generator 100 and ground equipment.

In conclusion, by arranging the bottom-overhanging maintenance platform provided by the utility model in the generator, the hydrogen leakage inspection of the generator and the manhole door of the outlet cover and the wire disconnection of the bolt of the manhole door do not need to be carried out by erecting a scaffold in daily inspection and size repair, thereby saving a large amount of capital and ensuring the daily maintenance and inspection of operation and maintenance personnel; carrying out suspension welding installation by utilizing the transportation support legs at two sides of the bottom of the generator stator shell; the welded generator bottom platform can be integrally lifted along with the generator stator and is not influenced; the welded generator bottom platform is paved by hollow aluminum alloy, so that the weight of the suspension platform is reduced; the crawling ladder of the platform at the bottom of the generator is selected to be convenient to go up and down and not occupy a pedestrian passageway; the ladder stand of generator bottom platform is connected with ground, easily adopts bolted connection, convenient to detach. The generator suspends the high easy setting of platform in midair in 1.5 meters or so, and the staff of being convenient for directly dismantles the bolt of generator bottom manhole door and the apron of manhole door. The head can be directly extended into the manhole to check the internal condition of the generator; the generator bottom suspension platform comprises a maintenance platform at the position of the generator bottom outlet cover, and workers can climb up to check the manhole door of the outlet cover and various temperature measuring points in the outlet cover.

Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a generator bottom overhauls platform that hangs upside down, the generator is provided with the base, is provided with manhole door on the base, its characterized in that, it includes to overhaul the platform:

the platform surface is arranged on the lower side of the base, and the platform surface and the base have a certain distance, and the distance enables a worker to enter the platform surface;

the climbing frame, the one end of climbing frame with the platform face is connected, the other end of climbing frame is connected with ground.

2. The service platform of claim 1, further comprising:

the suspension frame, the one end of suspension frame with the base is connected, the other end of suspension frame with the platform face is connected, the suspension frame is provided with a plurality ofly, and a plurality of balanced settings of suspension frame are in around the platform face.

3. The service platform of claim 2, wherein the suspension brackets are columns of I-steel structure, and the platform surface is a plane paved by hollowed-out aluminum alloy material.

4. The service platform of claim 1, wherein the other end of the climbing frame is connected to the ground by a bolt.

5. The service platform of claim 1, wherein the platform is spaced 1.5 meters from the base.

6. The service platform of claim 1 wherein the generator has load bearing walls on both sides and the platform face is embedded in inverted load bearing walls on both ends.

7. The service platform of claim 6, wherein the platform deck is flooded with a hot-dip galvanized steel grid mesh.

8. The service platform of claim 1, wherein the climbing frame is a vertical ladder, the frame of the ladder is two galvanized angle irons, and the cross arm of the ladder is a seamless steel pipe.