CN111379900B - Method for installing indoor horizontal large flue of large sintering plant - Google Patents
Method for installing indoor horizontal large flue of large sintering plant Download PDFInfo
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- CN111379900B CN111379900B CN202010240960.0A CN202010240960A CN111379900B CN 111379900 B CN111379900 B CN 111379900B CN 202010240960 A CN202010240960 A CN 202010240960A CN 111379900 B CN111379900 B CN 111379900B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/0243—Laying or reclaiming pipes on land, e.g. above the ground above ground
- F16L1/0246—Laying or reclaiming pipes on land, e.g. above the ground above ground at a certain height off the ground
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Abstract
The invention provides a method for installing a large indoor horizontal flue of a large sintering plant, which comprises the following steps of 1) presetting bolt holes and hoisting holes on an upper concrete frame beam of a flue; 2) a temporary transfer platform for transferring components such as a large flue, a support and the like is erected on a platform where the flue is located; 3) installing a hoisting tool on the basis of the upper platform of the flue to install the monorail beam, wherein two ends of the joist steel of the monorail beam are provided with a vehicle stop, a towing steel wire rope, a towing pulley and corresponding accessories; 4) hoisting the electric hoist to a temporary platform; 5) the flue ash bucket is hoisted to the temporary transfer platform by a crane, the flue ash bucket is hoisted to a terrace at a corresponding installation position before the flue is installed by an electric hoist, and the ash bucket is hoisted to be installed after a large flue is installed in place; 6) hoisting and installing a flue sliding support and a fixed support; 7) the large flue is arranged from the machine head to the machine tail; 8) determining the installation position on the installed flue, slowly pulling the flue ash hopper to the position below the flue, and adjusting the position to weld and fix; 9) and (5) dismantling the monorail girder and the electric hoist.
Description
Technical Field
The invention relates to an indoor horizontal large flue installation method for a large sintering plant.
Background
The indoor flue of the large-scale sintering plant has the characteristics of large diameter and thin pipe wall, is installed in a concrete frame, and is small in installation space. The installation method of the hoisting machine is an installation method for hoisting the flue short pipe to the frame in place and assembling by using the hoisting machine at two sides of a factory building, when the method is used for installation, because the space in the frame is small, if the flue support is installed firstly, when the short pipe is hoisted from the outer side of the frame to the frame, the flue support at the hoisting position is easy to block a hoisting component, if the flue support is installed firstly and then the flue support is installed, the difficulty is increased, time and labor are wasted, and the method uses the hoisting machine more and has relatively higher cost and is not economical.
Disclosure of Invention
Aiming at the problem that the large indoor flue of the factory building in the prior art is inconvenient to install, the invention provides an installation method which is simpler and more convenient to operate and lower in construction difficulty.
Specifically, to achieve the above object, the present invention provides the following technical solutions:
a method for installing a large horizontal flue in a large sintering plant comprises the following steps:
first, preset bolt hole and hoisting hole of flue upper concrete frame beam
When a platform on the upper layer of a flue is constructed, firstly, bolt holes and three phi 100 reserved holes for hoisting steel hoisting beams are preset in a platform concrete beam according to the installation requirement of the steel hoisting beams; and hanging ribs are arranged in the beam body of the part of the platform concrete beam with the preset bolt holes.
Second, install interim transport platform
A temporary transferring platform for transporting a large flue and a large flue support is erected on a platform where the flue is located, a square frame is assembled on a concrete frame beam by adopting H-shaped steel, a steel secondary beam is arranged in the square frame, a 12mm steel plate is laid on the surface of the platform, the platform is fixed by adopting a mode that concrete frame columns are embraced by angle steel, and a safety rope and a railing are arranged on the temporary transferring platform.
Thirdly, mounting I-shaped steel section hanging beam
Installing a head part steel hanging beam: the I-steel of the steel hanging beam is sent into a frame of a main workshop and placed on a 7m platform frame beam, the steel hanging beam 2 at the machine head part is hung on the frame beam of a platform where a flue is located from the joint position of the machine head and the main workshop, the steel hanging beam is dragged to the installation position by a winch and a chain block, and the chain block is installed on the basis of a platform concrete beam of the platform on the upper layer of the flue to lift the steel hanging beam in place.
Installing a steel hanging beam of a main workshop: hanging steel hanging beams of a main workshop part into a frame beam of a platform where a flue is located from two sides, then installing an I-shaped steel track below a concrete frame beam on the upper layer of the flue by using a crown block and a chain block on the main workshop, fixing the I-shaped steel by using bolts to penetrate through connecting pieces on the I-shaped steel and preset bolt holes, unloading a lifting appliance after the bolts are all installed and fastened, welding the head part of the steel hanging beam and the main workshop part by using a Z-shaped interface, and polishing a flange plate of the lower flange of the I-shaped steel smoothly to prevent a wheel from being clamped; and vehicle stoppers, towing steel wire ropes, towing pulley wheels and corresponding accessories are arranged at two ends of the I-shaped steel beam.
Fourthly, mounting the electric hoist
Assembling all parts of the electric hoist on the ground; adjusting the quantity of the gaskets on the connection screw shaft of the walking trolley and the hoist according to the standard requirement, so that the clearance between the walking edge of the electric hoist and the steel hanging beam is within the range of 3-5 mm; hoisting the electric hoist to the temporary platform by using a truck crane; preparing two steel wire ropes with the length of 12m, hanging the steel wire ropes on a top-hat beam head, and respectively putting down the two steel wire ropes from two sides of a steel hanging beam to bind the electric block so as to keep the electric block in a working posture; slowly lifting the steel wire rope to the position below the steel hanging beam, clamping the steel hanging beam by the two walking wheels, and slowly lifting the steel hanging beam to the mounting elevation; and after the bolt below the fastening travelling wheel adjusts the clearance, the hook head falls down to disassemble the steel wire rope to complete the installation.
Fifth, the lifting flue ash bucket
The flue dust hopper is hung to the temporary transfer platform by a crane, the flue dust hopper is hung to a terrace at a corresponding installation position before the flue is installed by an electric hoist, and the dust hopper is lifted to be installed after the large flue is installed in place.
Sixth, the handling installs the flue support
The large flue support has two forms of a sliding support and a fixed support; one single component of the fixed support can be directly installed after entering the field; the sliding support comprises a pipe support, two rolling shafts and two bottom plates, wherein the pipe support is welded with the flue, the bottom plates are welded with embedded parts on the beam, the rolling shafts roll left and right between the pipe support and the bottom plates, angle steel is needed to be adopted to be in temporary support welding connection before the support is installed, otherwise, the upper pipe support cannot be fixed before the flue is not installed, and the temporary support is removed after the flue is installed and is welded with the pipe support to be qualified.
During installation, the support is firstly transported to the temporary transportation platform by a truck crane, then the electric hoist is used for transporting the support to a concrete beam where a flue is located, the position and the elevation are adjusted, the support is welded and fixed with an embedded part according to drawing requirements, the support at the position of the temporary transportation platform is installed after the temporary platform is dismantled, the installation error between each support and the support meets the standard requirement, and otherwise, the installation speed and the quality of the flue are influenced.
Seventh, lifting installation flue
The large flue is installed from the machine head to the machine tail, each short pipe is 4.4m long, two hoisting noses are welded at 1/4 positions on two sides of each flue, the ladder stand and three safety rope stand columns are installed simultaneously, and safety ropes need to be tied on the safety rope stand columns.
During hoisting, the installation position and direction of the flue are confirmed according to the typesetting drawing, so that errors in position and direction are avoided; the flue is hung to the interim platform of transporting after and is put steadily and make anti-roll measure, and the operation personnel carry out the couple through the cat ladder, unload the hook.
During lifting, a certain safety distance is reserved between the flue and the flue support, and the flue advancing process is kept constant and stable in the lifting process; and when the flue gas is conveyed to the mounting position, the speed is reduced in advance, the stable component slowly advances, and slowly falls on the flue support to be paired by mounting personnel.
Eighthly, mounting flue ash bucket
The flue ash bucket is positioned below the flue, the mounting position of the flue ash bucket is determined on the mounted flue, the flue ash bucket is slowly pulled to the position below the flue by 4 blocks of 5t chain blocks, two 15mm seams are formed in the lower portion of the flue, the positions of the seams correspond to the flue ash bucket, the flue ash bucket is lifted, vertical plates on two sides of the ash bucket are inserted into the two seams, the flue ash bucket is welded and fixed after being adjusted, and after welding is completed, gas cutting is conducted on the flue wall corresponding to the flue ash bucket of the flue.
Nine, demolish steel hanging beam and electric block
Utilize the shaped steel maintenance platform of big flue top of electric block installation to overhaul the platform and carry out dismantling of electric block for the construction face, lift off electric block with the overhead traveling crane of main building earlier, dismantle the steel hanging beam section by section again, accomplish the installation of the big flue of sintering indoor level so far.
The temporary transfer platform is arranged at the tail side or at the head part close to the side column, and when the temporary transfer platform is arranged at the tail side, the flue is arranged from the head to the tail; when the temporary transfer platform is arranged at the head, the flue is arranged from the tail to the head.
The hoisting structure for hoisting the nose part of the steel hanging beam in place is as follows: a steel pipe is used as a cross beam, a steel wire rope buckle is hung on the steel pipe, the rope buckle penetrates through a phi 100 preformed hole pre-buried in a platform concrete beam of an upper platform of a flue, and a chain block is hung below the steel wire rope.
When the ash bucket is in a double-groove U-shaped structure, 8 lifting points are arranged on the ash bucket, 4 lifting points are arranged inside and 4 lifting points are arranged outside the ash bucket, the inner lifting points are used for lifting the ash bucket by an electric hoist, and the outer lifting points are used for lifting the ash bucket by a chain block.
Drawings
FIG. 1 is a schematic view of a flue installation;
FIG. 2 is a drawing showing the arrangement of steel hanging beam hanging bars;
FIG. 3 is a mounting view of a steel hanging beam;
FIG. 4 is a mounting diagram of the head part of the steel hanging beam;
FIG. 5 is a view showing the arrangement of the hanging points of the ash bucket;
FIG. 6 is a schematic view of the installation of a flue ash hopper;
FIG. 7 is a schematic view of a flue interim setting.
In the drawings, the main parts are illustrated by symbols:
1. an electric hoist; 1': a chain block; 2. a steel hanging beam; 3. a flue; 4. a platform where the flue is located; 5. a flue support; 6. an ash hopper; 7. a platform concrete beam; 8. a wire rope; 9. hoisting points; 10. climbing a ladder; 11. a safety rope upright post; 12. a safety rope.
Detailed Description
The technical scheme of the invention is explained in detail in the following with reference to the accompanying drawings and specific embodiments:
first, preset bolt hole and hoisting hole of flue upper concrete frame beam
A19.8 m platform in a factory building, namely a phi 100 reserved hole for presetting a bolt hole and three hoisting steel hoisting beams 2 in a platform concrete beam 7 according to the installation requirement of the steel hoisting beams and performing the presetting of the specification and the position of the bolt hole according to the requirement concentrated by a TJ16 diagram during the construction of an upper layer platform of a flue, wherein a hoisting rib is arranged in the platform concrete beam 7 to strengthen the part provided with the preset bolt hole, the hoisting rib is arranged according to the TJ16 diagram set, and the details are shown in the attached drawings 2 and 3.
Second, install interim transport platform
A temporary transfer platform is required to be built on the platform where the flue is located for transferring components such as the flue 3 and the support 5. The temporary transfer platform is characterized in that a square frame is assembled on a concrete frame beam (not shown in the attached drawing) by using H-shaped steel, a section steel secondary beam is arranged in the square frame, and then a 12mm steel plate is paved on the square frame. The temporary platform is fixed by a mode that angle steel embraces a concrete frame column (not shown in the attached drawing), and protective measures such as safety ropes, railings and the like are made on the temporary platform. The position of the temporary transfer platform is selected to be arranged on the frame with the largest distance between the main workshop parts. The temporary transfer platform can be arranged at the tail side or at the head part close to the side column, and when the temporary transfer platform is arranged at one side of the tail, the flue is arranged from the head to the tail; when the temporary transfer platform is arranged at the head, the flue is arranged from the tail to the head. In the example shown in fig. 1, the temporary transfer platform is installed at the tail side, and the flue is installed from 1 line to 19 lines.
Thirdly, mounting I-shaped steel section hanging beam
Referring to fig. 4, the steel hanging beam 2 is installed to be divided into a machine head part and a main plant part. Mounting of the machine head part: the I-steel of the steel hanging beam 2 is sent into a frame of a main workshop by an automobile crane and is placed on a 7m platform frame beam, the I-steel at the machine head part is hung on the frame beam with a flue from the joint position of the machine head and the main workshop by the automobile crane, the steel hanging beam 2 is dragged to the installation position by a winch and a chain block 1 ', a steel pipe is used as a cross beam to hang a steel wire rope 8, a steel wire rope buckle passes through the phi 100 reserved hole, and the chain block 1' is hung downwards to lift the steel hanging beam 2 to be in place, as shown in figure 4. And (3) installing the main workshop part of the steel hanging beam 2: the steel hanging beam 2 is hung on a frame beam where the flue 3 is positioned from two sides by using an automobile crane, an I-shaped steel track is installed below a concrete frame beam (not shown in the attached drawing) on the upper layer of the flue by using a crown block, a chain block 1' and the like on a main factory building, a bolt penetrates through a connecting piece to be connected and fixed with a reserved bolt hole of the frame beam, and the chain block and the like are disassembled after the bolts are all installed and fastened; the joint part between the steel hanging beam 2 is welded by adopting a Z-shaped interface, and the I-shaped steel lower flange plate is polished smoothly to prevent wheels from being clamped; because the cantilever beam has poor stability, the two ends of the steel hanging beam 2 are not provided with the cantilever beam; and accessories such as a vehicle stop, a towing wire rope, a towing pulley and the like are arranged at two ends of the steel hanging beam 2 according to the requirements of a standard drawing set.
Fourthly, mounting the electric hoist
The electric hoist 1 should select the synchronous even single track electric hoist of axle of double lifting hook for use, need select the single track electric hoist of same producer, the same model, the same specification when adopting two electric hoists 1 to guarantee that two electric hoists 1 can walk in step when going the work.
Assembling all parts of the electric hoist on the ground according to an electric hoist installation drawing, and adjusting the number of gaskets on a connecting screw shaft of the electric hoist and the walking trolley according to a standard requirement to ensure that the clearance between the walking edge of the electric hoist 1 and the steel hanging beam 2 is within a range of 3-5mm so as to prevent the trolley from derailing; hoisting an electric hoist 1 onto a temporary platform by using an automobile crane, preparing two 12m long steel wire ropes 8, hanging the steel wire ropes on a top-hat coupling head, respectively putting down the two steel wire ropes 8 from two sides of a steel hoisting beam 2 to trap the electric hoist 1, keeping the electric hoist in a working posture, slowly lifting the steel wire ropes 8 to a position below the steel hoisting beam 2, clamping the steel hoisting beam 2 by using two travelling wheels, slowly lifting to an installation elevation, fastening bolts below the travelling wheels to adjust gaps, dropping the coupling head to disassemble the steel wire ropes after meeting the standard requirements, and completing installation; and subsequently, the work of wiring, motor spindle movement amount, fire-breaking limiter adjustment, trial hoisting and the like is required to be done.
Fifth, the lifting flue ash bucket
Hoisting a flue ash bucket to a terrace corresponding to the installation position before the flue is installed by using an electric hoist, protecting the terrace by using a wood board and the like, and lifting the ash bucket to install after a large flue is installed in place; the ash bucket is the U type structure of double flute mostly, for preventing that the hoist and mount warp sets up 8 hoisting points 9 altogether, the ash bucket is inside 4, and outside 4, inside hoisting point 9 is used for electric block handling ash bucket 6 (see fig. 5), and outside hoisting point 9 is used for chain block 1' to promote the ash bucket (see fig. 6).
Sixth, the handling installs the flue support
The flue support 5 has two forms of a sliding support and a fixed support, and one single body component of the fixed support can be directly installed after entering a field. The sliding support comprises a pipe support, two rolling shafts and two bottom plates, wherein the pipe support is welded with the flue 3, the bottom plates are welded with embedded parts on the beam, the rolling shafts roll left and right between the pipe support and the bottom plates, angle steel is needed to be adopted to be in temporary support welding connection before the support is installed, otherwise, the upper pipe support cannot be fixed before the flue is not installed, and the temporary support is removed after the flue 3 is installed and is welded with the pipe support to be qualified.
The installation is transported to the interim platform with the truck crane earlier, and reuse electric block 1 transports flue support 5 to 3 place concrete beam in flues on, adjustment position and elevation, according to the drawing requirement with bury the piece and carry out welded fastening, the flue support at interim transport platform position waits to install after interim transport platform demolishs, and the erection error between each support and support should satisfy the standard requirement, otherwise will influence flue installation speed and quality.
Seventh, lifting installation flue
The large-scale flue is arranged from the machine head to the machine tail, each section of short pipe is 4.4m long, two hoisting noses are welded at 1/4 positions on two sides of each section of flue, a ladder stand 10 and three safety rope stand columns 11 are arranged at the same time, the design and the installation of the hoisting noses need to meet the strength requirement, and safety ropes 12 need to be fastened on the safety rope stand columns; the ladder stand 10 is preferably arranged at one side close to the line 19, so that the ladder stand is arranged on the flue at the fixed end every time, and the personnel operation is relatively safe; in order to be convenient to put and lift, the length of the ladder stand used before assembly should not exceed the bottom surface of the flue (see figure 7).
The outer sides of the flues are different in reinforcement position, and the installation position and direction of the flues are required to be confirmed according to the typesetting drawing during hoisting, so that errors in position and direction are avoided; after the flue is hung to the temporary platform, the flue is stably placed, anti-rolling measures are taken, and operators can hook and unload hooks through the crawling ladder.
During lifting, the flue 3 is not suitable to be lifted too high, a certain safety distance is reserved between the flue 3 and the flue support 5, the electric hoist 1 is operated by a special person and uniformly commanded by the special person during lifting, and the moving process is uniform and stable; when the flue gas is conveyed to the mounting position, the speed should be reduced in advance, the stable component slowly moves forward, and the stable component slowly falls on the flue support to be paired by mounting personnel.
Eighthly, mounting flue ash bucket
The large flue ash bucket 6 is positioned below the large flue and can be installed along with the flue 3, the installation position is firstly determined on the flue 3, the large flue ash bucket is slowly pulled to the position below the flue 3 by 4 tables of 5t chain blocks (see attached figure 6), two 15mm seams are formed in the lower portion of the flue 3, the seams correspond to the flue ash bucket, the flue ash bucket 6 is lifted, vertical plates on two sides of the ash bucket 6 are inserted into the two seams and are welded and fixed after being adjusted, the flue wall of the flue corresponding to the ash bucket is subjected to gas cutting to form small blocks with the width not exceeding the lower opening of the ash bucket after welding is completed, the small blocks are cut out from the lower opening of the ash bucket, the opening of the small blocks is preferably performed after the ash bucket is installed, and otherwise, the large flue ash bucket is not beneficial to installation due to deformation.
Nine, demolish steel hanging beam and electric block
Before the electric hoist 1 is dismantled, the section steel maintenance platform above the flue is installed by the electric hoist, so that the advantages of the electric hoist can be exerted, and an operation platform can be provided for dismantling the electric hoist. The electric hoist is dismantled after the maintenance platform above the flue is installed. When the electric hoist is disassembled, the electric hoist is disassembled by using the crown block of the main workshop, and then the steel hanging beams 2 are disassembled section by section, so that the installation of the horizontal large flue in the sintering chamber is completed.
The invention has the beneficial effects that: the method can solve the problem of the flue pipe which is transported in the frame and is installed, has strong operability, simple construction, safety and reliability, can greatly improve the working efficiency, and can save a large amount of manpower and hoisting machinery.
Claims (4)
1. An indoor horizontal large flue installation method for a large sintering plant comprises the following steps:
first, preset bolt hole and hoisting hole of flue upper concrete frame beam
When a platform on the upper layer of a flue (3) is constructed, firstly, bolt holes and phi 100 reserved holes for three hoisting steel hoisting beams (2) are preset in a platform concrete beam (7) according to the installation requirements of the steel hoisting beams (2); hanging ribs are arranged in the part, with the preset bolt holes, of the platform concrete beam (7);
second, install interim transport platform
A temporary transfer platform for transporting the flue (3) and a flue support (5) is erected on a platform (4) where the flue is located, a square frame is assembled on a concrete frame beam by adopting H-shaped steel, a steel secondary beam is arranged in the square frame, a steel plate of 12mm is laid on the surface of the platform, the platform is fixed in a mode that an angle steel embraces a concrete frame column, and a safety rope (12) and a railing are arranged on the temporary transfer platform;
thirdly, mounting I-shaped steel section hanging beam
The machine head part steel hanging beam (2) is installed: the I-steel of the steel hanging beam (2) is sent into a frame of a main workshop and placed on a 7m platform frame beam, the steel hanging beam (2) at the machine head part is hung on a frame beam of a platform (4) where a flue is located from the joint position of a machine head and the main workshop, the steel hanging beam (2) is dragged to the installation position by a winch and a chain block, the chain block is installed on the basis of a platform concrete beam (7) of an upper platform of the flue (3), and the steel hanging beam (2) is lifted in place;
installing a steel hanging beam (2) of a main workshop: a steel hanging beam (2) of the main workshop part is hung on a frame beam of a platform (4) where a flue is positioned from two sides, an overhead traveling crane and a chain block on the main workshop are used for installing an I-shaped steel track below a concrete frame beam on the upper layer of the flue (3), bolts penetrate through connecting pieces on the I-shaped steel and preset bolt holes to fix the I-shaped steel, the lifting appliance is disassembled after the bolts are completely installed and fastened, the connecting position of the machine head part of the steel hanging beam (2) and the main workshop part is welded by adopting a Z-shaped interface, and an I-shaped steel lower flange plate is polished smoothly to prevent wheels from being clamped; two ends of the steel hanging beam (2) are provided with a vehicle stop, a towing cable steel wire rope (8), a towing cable pulley and corresponding accessories;
fourthly, mounting the electric hoist
Assembling all parts of the electric hoist (1) on the ground; adjusting the quantity of the gaskets on the connection screw shaft of the walking trolley and the hoist according to the standard requirement, so that the gap between the walking edge of the electric hoist (1) and the steel hanging beam (2) is within the range of 3-5 mm; hoisting the electric hoist (1) to a temporary platform by using a truck crane; preparing two steel wire ropes (8) with the length of 12m, hanging the steel wire ropes on the head of the overhead crane, and respectively putting down the two steel wire ropes (8) from two sides of a steel hanging beam (2) to bind the electric block (1) so that the electric block (1) keeps the posture during working; slowly lifting the steel wire rope (8) to a position below the steel hanging beam (2), clamping the steel hanging beam (2) by the two walking wheels, and slowly lifting to an installation elevation; fastening bolts below the travelling wheels, falling down the hook heads after adjusting the gaps, and disassembling the steel wire ropes (8) to finish the installation;
fifth, the lifting flue ash bucket
The flue dust hopper (6) is lifted to the temporary transfer platform by a crane, the flue dust hopper (6) is lifted to a terrace corresponding to the installation position before the flue is installed by the electric hoist (1), and the flue (3) is installed in place and then the flue dust hopper (6) is lifted to be installed;
sixth, the handling installs the flue support
The flue support (5) has two forms of a sliding support and a fixed support; a single component of the fixed support is directly installed after entering a field; the sliding support comprises a pipe support, two rolling shafts and two bottom plates; the pipe bracket part is welded with the flue (3), the bottom plate is welded with the embedded part on the beam, and the rolling shaft rolls left and right between the pipe bracket and the bottom plate; before the flue support (5) is installed, angle steel is needed to be used for temporary support welding connection, otherwise, the upper pipe support cannot be fixed before the flue (3) is not installed, and after the flue (3) is installed and welded with the pipe support to be qualified, the temporary support is removed;
during installation, firstly, the flue support (5) is transported to a temporary transport platform by a truck crane, then an electric hoist (1) is used for transporting the flue support (5) to a concrete beam where a flue (3) is located, the position and the elevation are adjusted, the flue support (5) is welded and fixed with an embedded part according to drawing requirements, and the flue support (5) at the position of the temporary transport platform is installed after the temporary transport platform is dismantled; the installation errors of the flue supports (5) and the flue supports (5) meet the standard requirements;
seventh, lifting installation flue
The flues (3) are arranged from the machine head to the machine tail, each short pipe is 4.4m long, two hoisting noses are welded at 1/4 positions on two sides of each flue (3), the ladder stand (10) and three safety rope stand columns (11) are arranged at the same time, and the safety ropes (12) need to be tied on the safety rope stand columns (11);
during hoisting, the installation position and direction of the flue (3) are determined according to the typesetting drawing, so that errors in position and direction are avoided; after the flue (3) is hung to the temporary transfer platform, the flue is stably placed and anti-rolling measures are taken, and operators hook and unload hooks through the ladder (10);
during lifting, a certain safety distance is reserved between the flue (3) and the flue support (5), and the flue (3) keeps constant and stable in the advancing process in the lifting process; the speed is reduced in advance when the flue gas is conveyed to the mounting position, the stable component slowly moves forward and slowly falls on the flue support (5) to be paired by mounting personnel;
eighthly, mounting flue ash bucket
The flue ash bucket (6) is positioned below the flue (3), the mounting position is firstly determined on the mounted flue (3), then 4 sets of 5t chain blocks are used for slowly pulling the flue ash bucket to the position below the flue, two 15mm seams are formed in the lower portion of the flue (3), the positions of the seams correspond to the flue ash bucket (6), the flue ash bucket (6) is lifted, vertical plates on two sides of the ash bucket (6) are inserted into the two seams, the flue ash bucket is welded and fixed after being adjusted, and after welding is completed, the wall of the flue (3) corresponding to the flue ash bucket (6) is subjected to gas cutting and hole forming;
ninthly, dismantling the steel hanging beam (2) and the electric hoist
Utilize shaped steel maintenance platform of electric block (1) installation flue (3) top to overhaul the platform and carry out dismantling of electric block (1) for the construction face, lift off electric block (1) with the overhead traveling crane of main building earlier, demolish steel hanging beam (2) section by section again, accomplish the installation of the indoor horizontal flue of sintering so far.
2. The method for installing the indoor horizontal large flue of the large-scale sintering plant according to claim 1, wherein the method comprises the following steps: the temporary transfer platform is arranged at the tail side or at the head part close to the side column, and when the temporary transfer platform is arranged at the tail side, the flue is arranged from the head to the tail; when the temporary transfer platform is arranged at the head, the flue is arranged from the tail to the head.
3. The method for installing the indoor horizontal large flue of the large-scale sintering plant according to claim 1, wherein the method comprises the following steps: the hoisting of the machine head part of the steel hoisting beam (2) in position is as follows: a steel pipe is used as a cross beam, a steel wire rope (8) is hung on the steel pipe, a rope buckle penetrates through a phi 100 preformed hole pre-buried in a platform concrete beam (7) of an upper platform of a flue, and a chain block is hung below the steel wire rope (8).
4. The method for installing the indoor horizontal large flue of the large-scale sintering plant according to claim 1, wherein the method comprises the following steps: when ash bucket (6) are the U type structure of double flute, set up 8 hoisting point (9) on ash bucket (6), be ash bucket (6) inside 4, outside 4 respectively, inside hoisting point (9) are used for electronic calabash (1) handling ash bucket (6), and outside hoisting point (9) are used for chain block to promote ash bucket (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010240960.0A CN111379900B (en) | 2020-03-31 | 2020-03-31 | Method for installing indoor horizontal large flue of large sintering plant |
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| WO2008108891A1 (en) * | 2007-03-02 | 2008-09-12 | Saturn Machine & Welding Co., Inc. | Method of and apparatus for replacing coke oven wall |
| CN101482372A (en) * | 2009-01-22 | 2009-07-15 | 中冶建工有限公司 | Construction process for smoke canal swinging assembly of sintering device |
| CN102494536A (en) * | 2011-12-05 | 2012-06-13 | 中冶天工集团有限公司 | Construction method for dust-fall pipe of sintering chamber |
| CN104016089A (en) * | 2014-06-25 | 2014-09-03 | 中国五冶集团有限公司 | Slipping installation method of big flue of sintering machine and rail installation mechanism thereof |
| CN104418240A (en) * | 2013-08-27 | 2015-03-18 | 中国五冶集团有限公司 | Large flue lifting and assembly method |
| CN106121248A (en) * | 2016-06-21 | 2016-11-16 | 北京首钢建设集团有限公司 | The installation method of sintering large flue in a kind of restricted area |
| CN110127520A (en) * | 2019-05-10 | 2019-08-16 | 上海二十冶建设有限公司 | The small lattice funnel of large-type sinterer and dust-fall pipe installation method |
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| WO2008108891A1 (en) * | 2007-03-02 | 2008-09-12 | Saturn Machine & Welding Co., Inc. | Method of and apparatus for replacing coke oven wall |
| CN101482372A (en) * | 2009-01-22 | 2009-07-15 | 中冶建工有限公司 | Construction process for smoke canal swinging assembly of sintering device |
| CN102494536A (en) * | 2011-12-05 | 2012-06-13 | 中冶天工集团有限公司 | Construction method for dust-fall pipe of sintering chamber |
| CN104418240A (en) * | 2013-08-27 | 2015-03-18 | 中国五冶集团有限公司 | Large flue lifting and assembly method |
| CN104016089A (en) * | 2014-06-25 | 2014-09-03 | 中国五冶集团有限公司 | Slipping installation method of big flue of sintering machine and rail installation mechanism thereof |
| CN106121248A (en) * | 2016-06-21 | 2016-11-16 | 北京首钢建设集团有限公司 | The installation method of sintering large flue in a kind of restricted area |
| CN110127520A (en) * | 2019-05-10 | 2019-08-16 | 上海二十冶建设有限公司 | The small lattice funnel of large-type sinterer and dust-fall pipe installation method |
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| CN111379900A (en) | 2020-07-07 |
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