CN209778071U

CN209778071U - Lifting beam for lifting gas turbine exhaust diffuser

Info

Publication number: CN209778071U
Application number: CN201920559265.3U
Authority: CN
Inventors: 姜雪; 李超; 张杨
Original assignee: Yichang Marine Diesel Engine Co Ltd
Current assignee: Yichang Marine Diesel Engine Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2019-12-13
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a lifting beam for lifting a gas turbine exhaust diffuser, which comprises a cross beam, lifting lugs are symmetrically fixed on the top of the cross beam, two large rib plates are symmetrically welded and fixed on two sides of two ends of the cross beam respectively, and a long base plate is welded and fixed on the bottom of the large rib plates and the cross beam; the bottom of the cross beam is symmetrically welded with small rib plates at positions close to the large rib plates, the bottom of each small rib plate and the bottom of the cross beam are fixedly welded with short base plates, first through holes are symmetrically machined in the long base plates, and second through holes are symmetrically machined in the short base plates. The lifting beam is suitable for assembling and lifting finished products of GE 9FB gas turbine diffusers, and solves the problem that large stainless steel thin-wall rotating parts cannot be lifted after finishing.

Description

lifting beam for lifting gas turbine exhaust diffuser

Technical Field

The utility model relates to a lifting beam for gas turbine exhaust diffuser lifts by crane usefulness belongs to hoist and mount frock technical field.

Background

The exhaust diffuser is a large steel structural member which is an important transition between the gas turbine and the waste heat boiler, and mainly realizes the discharge of high-temperature spiral tail gas, capacity expansion, pressure reduction and flow guide are carried out, the waste heat boiler is uniformly heated, and the overall heat efficiency and the operation safety of the waste heat boiler are improved. The 9FB exhaust diffuser of GE company is regarded as the important stainless steel sheet structure on this model gas turbine, mainly by diffuser anterior segment urceolus, anterior segment inner tube, diffuser back end, parts such as inside thermal-insulated pavement and heat preservation branch pipe constitute, wherein maximum diameter phi 4986mm, total height 4749.62mm, barrel wall thickness 10mm, total weight 11t, its appearance size is great, the barrel wall thickness is thinner, and the diffuser anterior segment does not support, easy deformation in manufacturing and transportation, simultaneously, because there is not design lug on the product body, lead to lifting by crane after the product completion, follow-up assembly has very big degree of difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lifting beam for gas turbine exhaust diffuser lifts by crane usefulness, this lifting beam is applicable to assembly, the lifting after the completion of GE company 9FB gas turbine diffuser product, has overcome the problem that large-scale stainless steel thin wall rotating member can't lift by crane after the completion.

In order to achieve the technical features, the novel object is achieved as follows: a lifting beam for lifting an exhaust diffuser of a gas turbine comprises a cross beam, lifting lugs are symmetrically fixed at the top of the cross beam, two large rib plates are symmetrically welded and fixed on two sides of two ends of the cross beam respectively, and long base plates are welded and fixed at the bottoms of the large rib plates and the cross beam; the bottom of the cross beam is symmetrically welded with small rib plates at positions close to the large rib plates, the bottom of each small rib plate and the bottom of the cross beam are fixedly welded with short base plates, first through holes are symmetrically machined in the long base plates, and second through holes are symmetrically machined in the short base plates.

The beam is made of H-shaped steel materials through cutting.

And a lifting hole is processed on the lifting lug.

And a first rectangular notch matched with the cross beam is machined at one side of the bottom end of the large rib plate.

And a second rectangular notch matched with the cross beam is machined at one side of the bottom end of the small rib plate.

In the hoisting process, the long base plate is matched with an outer barrel flange of the diffuser and is connected with the flange hole through a bolt passing through the first through hole.

In the hoisting process, the short base plate is matched with the inner cylinder flange of the diffuser and passes through the second through hole through the bolt to be connected with the flange hole.

this neotype beneficial effect:

1. Through adopting the utility model discloses a lifting beam can be used for the hoist and mount of diffuser to use, at the hoist and mount in-process, through linking to each other through the bolt fastening between with it and the diffuser, lifts by crane the crossbeam through hoisting equipment, finally realizes the hoist and mount of whole diffuser, and then makes things convenient for it to accomplish subsequent assembly to can effectively improve the total assembly efficiency of product.

2. By adopting the design of the lifting beam of the 9FB gas turbine exhaust diffuser, the problems that the product cannot be assembled and lifted in the general way after being finished and cannot be integrally assembled on a client site are solved, the capability of solving problems and the innovation spirit of a technical team of the company are fully embodied, and a borrowed idea is provided for solving similar problems in the future; meanwhile, a full period is drawn for the successful development of the 9FB gas turbine exhaust diffuser, which marks that the company rises to a new stage in the production and development level of the gas turbine exhaust diffuser, and lays a solid foundation for the company to develop the F/H series gas turbine exhaust diffuser.

Drawings

The invention is further described with reference to the following figures and examples.

Fig. 1 is a three-dimensional schematic diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a top view of the present invention.

FIG. 5 is a front view of the novel large rib plate.

Fig. 6 is a front view of the novel small rib plate.

Fig. 7 is an installation diagram of the novel hoisting device in the hoisting process.

In the figure: the device comprises a cross beam 1, lifting lugs 2, large rib plates 3, small rib plates 4, short base plates 5, long base plates 6, second through holes 7, first through holes 8, first rectangular notches 9, second rectangular notches 10, diffusers 11, inner cylinder flange plates 12 and outer cylinder flange plates 13.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

As shown in fig. 1-7, a lifting beam for lifting an exhaust diffuser of a gas turbine comprises a cross beam 1, lifting lugs 2 are symmetrically fixed on the top of the cross beam 1, two large rib plates 3 are symmetrically welded and fixed on two sides of two ends of the cross beam 1, and a long pad plate 6 is welded and fixed on the bottom of the large rib plates 3 and the cross beam 1; the bottom of the cross beam 1 and the position close to the large rib plate 3 are symmetrically welded with small rib plates 4, the bottom of each small rib plate 4 and the bottom of the cross beam 1 are fixedly welded with short base plates 5, the long base plates 6 are symmetrically processed with first through holes 8, and the short base plates 5 are symmetrically processed with second through holes 7. By the above-mentioned structure

Furthermore, the beam 1 is made of H-shaped steel materials through cutting. The structure of the H-shaped steel is greatly simplified, and the design cost is reduced.

Further, a lifting hole is processed on the lifting lug 2. The whole cross beam 1 can be conveniently lifted through the lifting lugs 2.

Furthermore, a first rectangular notch 9 matched with the cross beam 1 is machined at one side of the bottom end of the large rib plate 3. The first rectangular notch 9 is convenient to match with the bottom of the H-shaped steel material.

Furthermore, a second rectangular notch 10 matched with the cross beam 1 is machined at one side of the bottom end of the small rib plate 4. The second rectangular gap 10 is convenient to match with the bottom of the H-shaped steel material.

Further, in the hoisting process, the long backing plate 6 is matched with an outer cylinder flange 13 of the diffuser 11 and is connected with the flange hole through the first through hole 8 by a bolt. And the bolts are adopted for connection, so that the subsequent disassembly is facilitated.

Further, in the hoisting process, the short backing plate 5 is matched with an inner cylinder flange 12 of the diffuser 11 and is connected with the flange hole by passing through the second through hole 7 through a bolt. And the bolts are adopted for connection, so that the subsequent disassembly is facilitated.

This neotype working process and principle:

1. And after the front section and the rear section of the diffuser are machined, the rear section is placed on the plane of the horizontal guide rail, and the horizontal alignment of the flange surfaces of the inner cylinder and the outer cylinder is carried out. After alignment, the lifting beam is installed on a front flange of an inner cylinder of the diffuser by using bolts, nuts, washers and spring washers, after the front section of the inner cylinder is seated on the rear section, the diffuser inner cylinder is fixed on the rear section of the diffuser by using dodecagonal bolts and dodecagonal locking nuts, and after fastening and fixing, the lifting beam is detached.

2. The lifting beam is installed on a front flange of an outer cylinder of the diffuser through bolts, nuts, washers and spring washers, after the front section of the outer cylinder is seated on the rear section, the outer cylinder of the diffuser is fixed on the rear section of the diffuser through dodecagonal bolts and dodecagonal locking nuts, and after the diffuser is fastened and fixed, the lifting beam is detached.

3. And (3) carrying out general assembly on the product, mounting the lifting beam on the front flange of the diffuser by using a bolt, a nut, a gasket and a spring gasket after the general assembly is finished, and hoisting, packaging and field assembly on the product by using the lifting beam after the mounting is finished.

The above-described embodiments are intended to illustrate rather than to limit the invention, and any modifications and variations of the invention which fall within the spirit of the invention and the scope of the appended claims are intended to be covered thereby.

Claims

1. A lifting beam for lifting a gas turbine exhaust diffuser, comprising: the lifting lug type beam comprises a beam (1), lifting lugs (2) are symmetrically fixed on the top of the beam (1), two large rib plates (3) are symmetrically welded and fixed on two sides of two ends of the beam (1) respectively, and long cushion plates (6) are welded and fixed on the bottom of the large rib plates (3) and the beam (1); the bottom of crossbeam (1) and the symmetry welding that is close to big gusset (3) have little gusset (4), the bottom welded fastening of little gusset (4) and crossbeam (1) has short backing plate (5), symmetrical processing has first through-hole (8) on long backing plate (6), symmetrical processing has second through-hole (7) on short backing plate (5).

2. The lifting beam for lifting a gas turbine exhaust diffuser as claimed in claim 1, wherein: the beam (1) is made of H-shaped steel materials through cutting.

3. The lifting beam for lifting a gas turbine exhaust diffuser as claimed in claim 1, wherein: lifting holes are processed on the lifting lugs (2).

4. The lifting beam for lifting a gas turbine exhaust diffuser as claimed in claim 1, wherein: one side of the bottom end of the large rib plate (3) is provided with a first rectangular notch (9) matched with the cross beam (1).

5. The lifting beam for lifting a gas turbine exhaust diffuser as claimed in claim 1, wherein: and a second rectangular notch (10) matched with the cross beam (1) is machined at one side of the bottom end of the small rib plate (4).

6. The lifting beam for lifting a gas turbine exhaust diffuser as claimed in claim 1, wherein: in the hoisting process, the long backing plate (6) is matched with an outer barrel flange (13) of the diffuser (11) and passes through the first through hole (8) through a bolt to be connected with a flange hole.

7. The lifting beam for lifting a gas turbine exhaust diffuser as claimed in claim 1, wherein: in the hoisting process, the short base plate (5) is matched with an inner cylinder flange plate (12) of the diffuser (11) and penetrates through the second through hole (7) through a bolt to be connected with a flange hole.