CN112663925A

CN112663925A - Hearth maintenance platform of circulating fluidized bed boiler

Info

Publication number: CN112663925A
Application number: CN202011504863.4A
Authority: CN
Inventors: 秦延山; 赵传涛; 王文丽; 李华; 马立超; 王银伟
Original assignee: SHANDONG SPECIAL EQUIPMENT INSPECTION LIAOCHENG BRANCH
Current assignee: SHANDONG SPECIAL EQUIPMENT INSPECTION LIAOCHENG BRANCH
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-04-16
Anticipated expiration: 2040-12-18
Also published as: CN112663925B

Abstract

The invention discloses a hearth maintenance platform of a circulating fluidized bed boiler, which comprises a left supporting frame, supporting rods, a walking assembly, a step assembly and a right supporting frame, wherein the left supporting frame and the right supporting frame are connected through the two mutually crossed supporting rods, the walking assembly is arranged on the periphery of each of the left supporting frame and the right supporting frame, and the step assembly is arranged on the left supporting frame. The simple installation is quick, and save time, reduction of erection time improves maintenance efficiency, and adopts a plurality of walking subassemblies to distribute in the edge of overhauing the platform with the annular, ensures the security of maintenance process, and the part that can overhaul is comprehensive, and supports according to platform self, and is comprehensive to the boiler protection.

Description

Hearth maintenance platform of circulating fluidized bed boiler

Technical Field

The invention relates to the technical field of hearth maintenance platforms, in particular to a hearth maintenance platform of a circulating fluidized bed boiler.

Background

Utility boilers are, in popular terms, boilers used by power plants to generate electricity, and there are two main types of utility boilers: pulverized coal furnaces and circulating fluidized bed boilers. The circulating fluidized bed boiler adopts fluidized combustion, and the main structure comprises a combustion chamber (comprising a dense phase region and a dilute phase region) and a circulating return furnace (comprising a high-temperature gas-solid separator and a return system). The operation wind speed is high, the heterogeneous reaction processes such as combustion, desulfurization and the like are enhanced, and the boiler capacity can be expanded to the large capacity (600MW or above grade) acceptable by the power industry. The abrasion of the heating surface of the boiler is larger than that of a pulverized coal furnace, and the maintenance frequency and the maintenance content of the boiler are increased. During each maintenance of the circulating fluidized bed boiler, a full-hearth scaffold is required to be erected in a hearth with the height of 40 meters (60 meters at most) for detecting the heating surface, so that the heating surface is not seriously abraded after the high-speed flue gas is washed.

The patent for CN201821479422.1 discloses a stable maintenance platform that goes up and down of steam power plant boiler furnace, which comprises a base, the bottom fixedly connected with of inner chamber of the base supports the base, the top swing joint that supports the base has the rotation post, the one end activity that the rotation post runs through and extends to the base outside has cup jointed the chassis, the base is located the top fixedly connected with bearing device who rotates the post side, the side fixedly connected with push handle on chassis, the top fixedly connected with maintenance cover on chassis, the bottom fixedly connected with driving motor of inner chamber of the chassis. This stable maintenance platform that goes up and down of steam power plant boiler furnace through supporting the base and being connected with the column, has guaranteed that this stable maintenance platform that goes up and down of steam power plant boiler furnace can carry out rotary motion in the use, avoids maintainer need change position many times in the course of the work, causes unnecessary physical demands and maintenance efficiency to reduce. But the above-mentioned maintenance platform is built the degree of difficulty greatly, consumes time long, and required labour cost is big, and its maintenance scope is little, can't overhaul furnace comprehensively, and because it removes, has the risk of collision to furnace, and is low to its protectiveness, and is low to maintainer's protectiveness.

Disclosure of Invention

The invention aims to provide a hearth overhauling platform of a circulating fluidized bed boiler, which is simple and quick to install, saves time, shortens the construction period and improves the overhauling efficiency, adopts a plurality of walking assemblies to be distributed on the edge of the overhauling platform in an annular manner, ensures the safety of the overhauling process, can completely overhaul the part, is supported by the platform, can completely protect the boiler, and solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a hearth overhauling platform of a circulating fluidized bed boiler comprises a left supporting frame, supporting rods, a walking assembly, a step assembly and a right supporting frame, wherein the left supporting frame and the right supporting frame are connected through the two mutually crossed supporting rods;

the left supporting frame and the right supporting frame are consistent in structure, the right supporting frame comprises supporting columns, a cross beam, longitudinal beams, a clamping ring and welding cylinders, the welding cylinder is welded on the side wall of each supporting column, the cross beam is connected between two welding cylinders in the horizontal direction, the longitudinal beam is connected between two supporting columns in the vertical direction, the clamping ring is arranged on the longitudinal beam, and the clamping ring is fixedly sleeved on the supporting columns;

the walking assembly comprises a strip-shaped plate and buckles, semicircular buckles are welded at the four corners of the strip-shaped plate, and the buckles are buckled and connected to the longitudinal beam;

the ladder assembly comprises a ladder and hooks, the hooks are welded at two corners of the upper end of the ladder, and the ladder assembly is connected to the longitudinal beam through the hooks.

Preferably, both ends of the cross beam are bent downward, and the bent portions are inserted into the welding cylinder.

Preferably, the left supporting frame and the right supporting frame are both provided with four supporting columns, and the four supporting columns are distributed at four corners of the left supporting frame and the right supporting frame.

Preferably, both ends department of bracing piece all is provided with two archs that are parallel to each other, and two archs are located the both sides of longeron, and bellied middle part is provided with the through-hole, is connected with end to end's cyclic annular steel wire in the through-hole.

Preferably, a plurality of air holes are formed in the strip-shaped plate.

Preferably, the longitudinal beam, the cross beam and the support column are cylindrical rod bodies.

Preferably, the cross section of the support rod is rectangular.

Compared with the prior art, the invention has the following beneficial effects:

according to the hearth overhauling platform of the circulating fluidized bed boiler, the plurality of supporting rods are fixedly connected to the ground, the longitudinal beams are sleeved on the supporting rods, the two ends of the cross beam are inserted into the welding barrels, the supporting rods are connected in a crossed mode to reinforce the stability of each rod body, the overhauling platform framework can be built, the walking assemblies are connected at the positions of the extending longitudinal beams in a buckled mode after the building is completed, and finally the step assemblies are lapped on the longitudinal beams to complete the installation of the hearth overhauling platform.

Drawings

FIG. 1 is an overall block diagram of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B in accordance with the present invention;

FIG. 4 is a block diagram of the walking assembly of the present invention;

fig. 5 is a structural view of the ladder assembly of the present invention.

In the figure: 1. a left side support frame; 2. a support bar; 21. a protrusion; 22. a through hole; 23. an annular steel wire; 3. a walking assembly; 31. a strip plate; 32. air holes; 33. looping; 4. a ladder assembly; 41. a step; 42. hooking; 5. a right side support frame; 51. a support pillar; 52. a cross beam; 53. a stringer; 54. a snap ring; 55. and (6) welding the cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, a hearth maintenance platform of a circulating fluidized bed boiler includes a left support frame 1, support rods 2, a walking assembly 3, a step assembly 4 and a right support frame 5, wherein the left support frame 1 and the right support frame 5 are connected by two support rods 2 which are mutually crossed, the walking assembly 3 is arranged around the left support frame 1 and the right support frame 5, the step assembly 4 is arranged on the left support frame 1, the left support frame 1 and the right support frame 5 are provided with four support columns 51, and the four support columns 51 are distributed at four corners of the left support frame 1 and the right support frame 5; both ends department of bracing piece 2 all is provided with two archs 21 that are parallel to each other, two archs 21 are located longeron 53's both sides, and the middle part of arch 21 is provided with through-hole 22, be connected with end to end's cyclic annular steel wire 23 in the through-hole 22, cyclic annular steel wire 23 is used for consolidating the connection between bracing piece 2 and the longeron 53, avoid connection between the two to suffer to rock the back and break away from each other, longeron 53, the equal cylindric body of rod of crossbeam 52 and support column 51, the rectangle is personally submitted to bracing.

Left side braced frame 1 is unanimous with right side braced frame 5 structure, right side braced frame 5 includes support column 51, crossbeam 52, longeron 53, snap ring 54 and welding barrel 55, all weld on every support column 51's the lateral wall and weld barrel 55, be connected with crossbeam 52 between two welding barrels 55 on the horizontal direction, crossbeam 52's both ends downwarping, crooked part is inserted in welding barrel 55, the dismouting is simple and convenient, be connected with longeron 53 between the two ascending support columns 51 of vertical direction, be provided with snap ring 54 on the longeron 53, snap ring 54 fixes cover on support column 51, earlier on many spinal branchs vaulting pole 2 fixed connection subaerial, then cup joint longeron 53 on bracing piece 2, insert in welding barrel 55 at the both ends of crossbeam 52, cross connection bracing piece 2 consolidates the stability of each body of rod.

Please refer to fig. 4, the traveling assembly 3 includes a strip plate 31, air holes 32 and buckles 33, the semicircular buckles 33 are welded at four corners of the strip plate 31, and a plurality of air holes 32 are opened on the strip plate 31, the buckles 33 are buckled and connected on the longitudinal beams 53, the traveling assembly 3 is buckled and connected at each extended longitudinal beam 53, finally, the step assembly 4 is lapped on the longitudinal beams 53, the installation of the hearth maintenance platform is completed, the installation can be completed within 10 hours, the installation is simple, convenient and quick, the time is saved, the construction period is shortened, the maintenance efficiency is improved, a plurality of traveling assemblies 3 are annularly distributed on the edge of the maintenance platform, the safety of the maintenance process is ensured, the maintenance part is comprehensive, and the boiler is comprehensively protected according to the platform self-supporting.

Referring to fig. 5, the ladder assembly 4 includes a ladder 41 and hooks 42, the hooks 42 are welded at two corners of the upper end of the ladder 41, the ladder assembly 4 is hooked on the longitudinal beams 53 through the hooks 42, and the ladder assembly 4 is convenient for the maintainers to climb.

In summary, the following steps: according to the hearth maintenance platform of the circulating fluidized bed boiler, a plurality of support rods 2 are fixedly connected to the ground, longitudinal beams 53 are sleeved on the support rods 2, two ends of a cross beam 52 are inserted into welding barrels 55, the support rods 2 are connected in a cross mode to reinforce the stability of each rod body, the construction of a maintenance platform framework can be completed, walking assemblies 3 are buckled and connected at the positions of the extending longitudinal beams 53 after the construction is completed, and finally step assemblies 4 are lapped on the longitudinal beams 53 to complete the installation of the hearth maintenance platform.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a furnace of circulating fluidized bed boiler overhauls platform which characterized in that: the walking frame comprises a left supporting frame (1), supporting rods (2), walking components (3), a step component (4) and a right supporting frame (5), wherein the left supporting frame (1) and the right supporting frame (5) are connected through the two mutually crossed supporting rods (2), the walking components (3) are arranged on the periphery of the left supporting frame (1) and the periphery of the right supporting frame (5), and the step component (4) is arranged on the left supporting frame (1);

the left supporting frame (1) and the right supporting frame (5) are identical in structure, the right supporting frame (5) comprises supporting columns (51), cross beams (52), longitudinal beams (53), clamping rings (54) and welding cylinders (55), the welding cylinders (55) are welded on the side walls of the supporting columns (51), the cross beams (52) are connected between the two welding cylinders (55) in the horizontal direction, the longitudinal beams (53) are connected between the two supporting columns (51) in the vertical direction, the clamping rings (54) are arranged on the longitudinal beams (53), and the clamping rings (54) are fixedly sleeved on the supporting columns (51);

the walking assembly (3) comprises a strip-shaped plate (31) and buckles (33), semicircular buckles (33) are welded at the four corners of the strip-shaped plate (31), and the buckles (33) are connected to the longitudinal beam (53) in a buckling mode; ladder subassembly (4) include ladder (41) and crotch (42), crotch (42) have all been welded in the upper end both corners department of ladder (41), ladder subassembly (4) collude through crotch (42) and link to each other on longeron (53).

2. The hearth servicing platform of a circulating fluidized bed boiler of claim 1, wherein: both ends of the cross beam (52) are bent downward, and the bent portions are inserted into the welding cylinders (55).

3. The hearth servicing platform of a circulating fluidized bed boiler of claim 1, wherein: the left supporting frame (1) and the right supporting frame (5) are provided with four supporting columns (51), and the four supporting columns (51) are distributed at four corners of the left supporting frame (1) and the right supporting frame (5).

4. The hearth servicing platform of a circulating fluidized bed boiler of claim 1, wherein: both ends department of bracing piece (2) all is provided with two archs (21) that are parallel to each other, and two archs (21) are located the both sides of longeron (53), and the middle part of arch (21) is provided with through-hole (22), is connected with cyclic annular steel wire (23) that end to end in through-hole (22).

5. The hearth servicing platform of a circulating fluidized bed boiler of claim 1, wherein: the strip-shaped plate (31) is provided with a plurality of air holes (32).

6. The hearth servicing platform of a circulating fluidized bed boiler of claim 1, wherein: the longitudinal beam (53), the cross beam (52) and the support column (51) are cylindrical rod bodies.

7. The hearth servicing platform of a circulating fluidized bed boiler of claim 1, wherein: the cross section of the support rod (2) is rectangular.