CN107268947B - The construction method of arc flue aperture - Google Patents
The construction method of arc flue aperture Download PDFInfo
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- CN107268947B CN107268947B CN201710443697.3A CN201710443697A CN107268947B CN 107268947 B CN107268947 B CN 107268947B CN 201710443697 A CN201710443697 A CN 201710443697A CN 107268947 B CN107268947 B CN 107268947B
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- flue
- brick
- aperture
- arc
- arch
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Special Wing (AREA)
- Continuous Casting (AREA)
Abstract
The present invention provides a kind of construction methods of arc flue aperture.Include: protective device installation steps, lays protective device close to the position to opening area on flue top plate；Construction equipment making step, production door type frame, arc roll-over protective structure and other auxiliary machine tools；Reinforced concrete flue opening step, door type frame is installed on after the predeterminated position of opening area, carries out cutting aperture to reinforced concrete flue；Brick refractory brick flue opening step, arc roll-over protective structure is installed between flue top plate and fire resisting bricked arch roof, carries out aperture to brick fireproof flue；Personnel's monitoring, hole closing and protection step, cover aperture hole, monitor flue pressure, flue duct and timely cap holes are installed after aperture；Site clearing step clears up the building waste of construction site.Operation of the present invention is simply applicable in, and efficiency is higher, and flue arch crown caused by preventing external force from concentrating is collapsed by external force, it is ensured that when Demolition Construction, coke oven normally daily production.
Description
Technical field
The present invention relates to engineering construction technical field of construction, in particular to a kind of construction party of arc flue aperture
Method.
Background technique
Currently, becoming increasingly popular with energy conservation and environmental protection theory, the old various commercial plants in industrial enterprise the inside and facility
Heat recovery technology upgrading transformation become increasingly prevalent, in order to which the flue gas of high temperature or low temperature is used,
In brick arc flue aperture improvement project it is more and more.
In general, flue includes concrete roof and arch crown, brick flue is divided into layering annular and builds and be layered
It staggeredly builds, such as during carrying out waste heat recycling to coke oven low-temperature flue gas, using the flue gas of coke oven discharge as heat source, adds
One waste heat boiler and auxiliary facility, flue gas return again in flue after waste heat boiler recycling, are gone out by smoke stack emission
It goes, therefore, it is necessary to flue gas leadout hole, flashboard hole and flue gas entrance hole are opened on chimney main chimney flue top plate.
In flue top plate opening operation, construction personnel generally stands directly on arch crown and carries out aperture to flue top plate
Operation, when perforated area is larger, construction space can become narrow, make troubles to the construction operation of construction personnel, also, arc
It is easy to happen collapsing when shape vault is by external force, to bring adverse effect to entire production, also will cause construction personnel and fall into
The safety accident of flue.
As can be seen that the prior art is difficult to accomplish not only to have guaranteed the safety of brick arc flue and normal production, but also guarantee to apply
The safety of worker person.
Summary of the invention
In consideration of it, the invention proposes a kind of construction methods of arc flue aperture, it is intended to solve existing flue aperture skill
Art is easy to cause arch crown to collapse, to bring the problem of adversely affecting and easily causing safety accident to normal production.
On one side, the invention proposes a kind of construction methods of arc flue aperture, comprising the following steps: protective device
Installation steps lay protective device close to the position to opening area on flue top plate；
Construction equipment making step, production door type frame, arc roll-over protective structure and other auxiliary machine tools；Reinforced concrete flue aperture step
Suddenly, the door type frame is installed on described after the predeterminated position of opening area, cutting aperture is carried out to reinforced concrete flue；It is brick
The arc roll-over protective structure is installed between flue top plate and fire resisting bricked arch roof, to the brick by refractory brick flue opening step
It builds fireproof flue and carries out aperture；Personnel's monitoring, hole closing and protection step, cover aperture hole, monitor flue pressure, aperture
After flue duct and timely cap holes are installed；Site clearing step clears up the building waste of construction site.
Further, in the construction method of above-mentioned arc flue aperture, the construction equipment making step further include: production
Bquster and brick-clamping device.
Further, in the construction method of above-mentioned arc flue aperture, in the construction equipment making step, the gate
The composition material of frame is channel steel and I-steel.
Further, in the construction method of above-mentioned arc flue aperture, in the construction equipment making step, the arc
Roll-over protective structure includes: outer layer arch ring and internal layer arch ring；Wherein, the outer layer arch ring is suspended in the upper of the arch crown of brick refractory brick
Side, the internal layer arch ring are placed in below the arch crown of brick refractory brick；The internal layer arch ring is connected with the outer layer arch ring,
And it is connected to the top plate to aperture flue.
Further, in the construction method of above-mentioned arc flue aperture, the reinforced concrete flue opening step is further wrapped
Include: door type frame is placed in aperture by line setting sub-step in the default position of opening line setting of reinforced concrete flue top plate
The predeterminated position in region；Drill sub-step, in the reinforced concrete flue top plate drilling；Sub-step is cut, according to the scribing line position
The cutting flue roof support with reinforced concrete is set, the reinforced concrete block of cutting is hung into the flue roof support with reinforced concrete and entrucking
Outward transport.
Further, in the construction method of above-mentioned arc flue aperture, in the line setting sub-step, according to aperture ruler
Very little point of aperture at least twice.
Further, in the construction method of above-mentioned arc flue aperture, the brick refractory brick flue opening step is into one
Step includes: that arc roll-over protective structure is installed on by installation arc roll-over protective structure sub-step after refractory brick arc flue top plate builds partition wall
Between flue top plate and the partition wall of fire resisting bricked arch roof；Brick fireproof flue removes sub-step, successively remove refratory insulating brick and
Clay brick.
Further, in the construction method of above-mentioned arc flue aperture, the brick fireproof flue is removed in sub-step, right
In the clay brick that layering annular is built, bquster is stamped in the clay brick two sides that do not remove, is gradually removed from top to two sides resistance to
Fiery clay brick installs the internal layer arch ring of arc roll-over protective structure, supports the second arch fire resisting after the first arch chamotte brick aperture
Clay brick removes the second arch chamotte brick；The internal layer arch ring of arc roll-over protective structure is shifted, third is removed and encircles chamotte brick, with
This analogizes, until whole fire resisting bricked arch roof apertures finish.
The invention has the following beneficial effects:
1, easy to operate to be applicable in, efficiency is higher, and labor intensity is greatly reduced；
2, the bearing capacity for taking full advantage of flue vault has dispersed flue supporting power, cigarette caused by preventing external force from concentrating
Road arch crown is collapsed by external force, it is ensured that when Demolition Construction, coke oven normally daily production；
3, the special tools equipments such as door type frame, safe arc frame are used, the progress of brick arc flue aperture is improved, are contracted
The short construction time, improve efficiency；
4, fire resisting brick baffle has been built, it is ensured that will not mutually collaborate between flue.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the flow chart of the construction method of arc flue aperture provided in an embodiment of the present invention；
Fig. 2 is the mounting structure schematic diagram of arc roll-over protective structure in brick arc flue provided in an embodiment of the present invention；
Fig. 3 is the another flow chart of the construction method of arc flue aperture provided in an embodiment of the present invention；
Fig. 4 is the another flow chart of the construction method of arc flue aperture provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, the flow chart of the construction method of arc flue aperture provided in an embodiment of the present invention is shown in figure.Such as
Shown in figure, the technique the following steps are included:
Protective device installation steps S1 lays protective device close to the position to opening area on flue top plate.
Specifically, carried out on flue top plate close to the position to opening area lay the protective devices such as guard rail and
The safe preparation that construction personnel needs to pay attention to.
Construction equipment making step S2, production door type frame, arc roll-over protective structure and other auxiliary machine tools.Specifically, Ke Yixuan
Door type frame is made with for channel steel and I-steel.For example, can using [200 channel steels, I200 I-steel production 2400mm high,
The door type frame of 2000mm wide.When it is implemented, the size of door type frame can be determined according to the actual situation.Can select channel steel or
Steel plate etc. makes arc roll-over protective structure.Other equipments may include the equipments such as bquster.
Referring to fig. 2, the installation diagram of arc roll-over protective structure in arc flue provided in an embodiment of the present invention is shown in figure.
As seen from the figure: being fire resisting bricked arch roof 1 inside flue, be divided into two layers, upper layer is insulating brick 11, and lower layer is clay brick 12.It is viscous
Cob brick is that layering annular is built or layering is staggeredly built；Outside is rectangular armored concrete flue 2.
Arc roll-over protective structure in the present embodiment may include: outer layer arch ring 3 and internal layer arch ring 4.Outer layer arch ring 3 is suspended in brick
The top of the arch crown of refractory brick is built, internal layer arch ring 4 is placed in below the arch crown of brick refractory brick；Internal layer arch ring 4 and outer
Stringcourse circle 3 is connected, and is connected to the top plate to aperture flue.When it is implemented, can be by the first bindiny mechanism 5 by outer layer
Arch ring 3 is fixed on the top plate to aperture flue.It is provided with engaging lug at the vault of internal layer arch ring 4, which is equipped with aperture,
Outer layer arch ring 3 can hook the aperture on engaging lug by one end of the second bindiny mechanism 6 and be connected with internal layer arch ring 4, and second
The other end of bindiny mechanism 6 is fixed on the top plate to aperture flue.The both ends of internal layer arch ring 4 can pass through third bindiny mechanism 7
It is connected.Wherein, the first bindiny mechanism 5, the second bindiny mechanism 6 and third bindiny mechanism 7 can be by lead screw, flower basket bolt, slots
The components such as steel, steel plate composition, the connection relationship of each component are well known to those skilled in the art, and details are not described herein again.
Reinforced concrete flue opening step S3, the door type frame is installed on it is described after the predeterminated position of opening area, it is right
Reinforced concrete flue carries out cutting aperture.Reinforced concrete flue opening step S3 further comprises:
Line setting sub-step S31 places door type frame in the default position of opening line setting of reinforced concrete flue top plate
In the predeterminated position to opening area.Specifically, when line setting, aperture at least twice can be divided according to bore size, such as
Four pieces of armored concrete flue sheets to be cut can be marked off in the region to aperture according to bore size aperture in four times.
Drill sub-step S32, in the reinforced concrete flue top plate drilling.Specifically, it can be drilled using 100mm water drilling,
In order to which the hook hook done using reinforcing bar is reeved, is blocked after being drilled 100mm hole using plug, prevent rainwater and apply
Work water flow flue.
Sub-step S33 is cut, the flue roof support with reinforced concrete is cut according to the scribing position, by the reinforcing bar of cutting
Concrete block hangs the flue roof support with reinforced concrete and entrucking outward transport.
Specifically, using Buddha's warrior attendant chain rope saw cutting machine, flue armored concrete is cut in position to the layout line, when one block of reinforcing bar
The three sides cutting of concrete finishes, and only when surplus one side, does bracket using door type frame, and using chain block sling reinforced concrete block (such as
23 tons of chain block can be used), then cut last one side reinforced concrete；Chain block slings reinforced concrete after cutting
Block is hung at the top of reinforced concrete flue, then slings entrucking outward transport (such as the crane that can select 25t) using crane；It uses in time
Plank closes floss hole, and so on, remaining three pieces of armored concrete flue sheets are gradually removed, entire aperture finishes.
The arc roll-over protective structure is installed on flue top plate and fire resisting bricked arch roof by brick refractory brick flue opening step S4
Between, aperture is carried out to the brick fireproof flue.The step may further include:
Arc roll-over protective structure sub-step S41 is installed, after refractory brick arc flue top plate builds partition wall, arc roll-over protective structure is pacified
Between partition wall loaded on flue top plate and fire resisting bricked arch roof.
Specifically, after the aperture of armored concrete flue sheet, starting to build on refractory brick arc flue top prevents phase
Then arc roll-over protective structure is installed between flue top plate and the partition wall of fire resisting bricked arch roof by the partition wall mutually collaborated.
Brick fireproof flue removes sub-step S42, successively removes refratory insulating brick and clay brick.
Specifically, first layer refratory insulating brick can be removed using cleaver, crowbar and hammer etc., and cleaned out；Then
Remove second layer clay brick.When removing clay brick, to prevent clay brick stress unbalance collapsing suddenly, layering annular is built
Clay brick stamps bquster in the clay brick two sides that do not remove, gradually removes chamotte brick from top to two sides, and the first arch is resistance to
After fiery clay brick aperture, the internal layer arch ring of arc roll-over protective structure is installed, supports the second arch chamotte brick, removes the second arch
Chamotte brick；The internal layer arch ring of arc roll-over protective structure is shifted, third is removed and encircles chamotte brick, and so on, until all resistance to
Fiery bricked arch roof aperture finishes.Staggeredly build clay brick for layering: the key brick safety staggeredly built is preferable, it is not easy to
It collapses and falls to inside flue, the service condition of bquster can be determined according to on-site actual situations.
Personnel's monitoring, hole closing and protection step S5, cover aperture hole, monitor flue pressure, pacify after aperture
Fill flue duct and timely cap holes.
Specifically, in Tapping procedures, it is necessary to arrange special messenger to guard coke oven production process, it is real-time using related monitoring device
Monitor flue pressure, encounter pressure oscillation it is larger when, using intercom to construction personnel issue immediately stop construction signal.It opens
Plank and refractory fiber blanket coverage hole are used during hole in time, avoiding, which influences coke oven flue, normally produces；Aperture is finished, is cleared up
After clean, flue is installed immediately, and carry out close measure.
Site clearing step S6, clears up the building waste of construction site.
Specifically, the remaining building waste in scene is cleaned, the disassemblies such as equipment used in work progress is playbacked.
In conclusion the construction method of the arc flue aperture in the present embodiment, easy to operate to be applicable in, efficiency is higher, and
And labor intensity is greatly reduced；The bearing capacity for taking full advantage of flue vault has dispersed flue supporting power, prevents external force collection
In caused by flue arch crown collapsed by external force, it is ensured that when Demolition Construction, coke oven normally daily production；Using door
The special tools equipments such as type frame, safe arc frame improve the progress of brick arc flue aperture, shorten the construction time, improve
Efficiency；Fire resisting brick baffle is built, it is ensured that will not mutually collaborate between flue.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of construction method of arc flue aperture, which comprises the following steps:
Protective device installation steps lay protective device close to the position to opening area on flue top plate;
Construction equipment making step, production door type frame, arc roll-over protective structure and other auxiliary machine tools;
Reinforced concrete flue opening step, the door type frame is installed on it is described after the predeterminated position of opening area, to reinforced concrete
Flue carries out cutting aperture;
The arc roll-over protective structure is installed between flue top plate and fire resisting bricked arch roof by brick refractory brick flue opening step,
Aperture is carried out to the brick fireproof flue;
Personnel's monitoring, hole closing and protection step, cover aperture hole, monitor flue pressure, install flue after aperture
Pipeline and timely cap holes;
Site clearing step clears up the building waste of construction site；
In the construction equipment making step, the arc roll-over protective structure includes: outer layer arch ring and internal layer arch ring;The outer layer arch ring
It is suspended in the top of the arch crown of brick refractory brick, the internal layer arch ring is placed in below the arch crown of brick refractory brick;Institute
It states internal layer arch ring to be connected with the outer layer arch ring, and is connected to the top plate to aperture flue.
2. the construction method of arc flue aperture according to claim 1, which is characterized in that the construction equipment production step
Suddenly further include: production bquster and brick-clamping device.
3. the construction method of arc flue aperture according to claim 1, which is characterized in that the construction equipment production step
In rapid, the composition material of the door type frame is channel steel and I-steel.
4. the construction method of arc flue aperture according to any one of claim 1 to 3, which is characterized in that the steel
Muscle concrete flue opening step further comprises:
Door type frame is placed in wait open by line setting sub-step in the default position of opening line setting of reinforced concrete flue top plate
The predeterminated position of bore region;
Drill sub-step, in the reinforced concrete flue top plate drilling;
Sub-step is cut, the flue roof support with reinforced concrete is cut in position to the layout line, and the reinforced concrete block of cutting is hung institute
State flue roof support with reinforced concrete and entrucking outward transport.
5. the construction method of arc flue aperture according to claim 4, which is characterized in that the line setting sub-step
In, according to bore size point aperture at least twice.
6. the construction method of arc flue aperture according to claim 5, which is characterized in that the brick refractory brick flue
Opening step further comprises:
Arc roll-over protective structure sub-step is installed, after refractory brick arc flue top plate builds partition wall, arc roll-over protective structure is installed on cigarette
Between road top plate and the partition wall of fire resisting bricked arch roof;
Brick fireproof flue removes sub-step, successively removes refratory insulating brick and clay brick.
7. the construction method of arc flue aperture according to claim 6, which is characterized in that the brick fireproof flue is torn open
Except in sub-step, the clay brick built annular for layering stamps bquster in the clay brick two sides that do not remove, gradually from top
Chamotte brick is removed after the first arch chamotte brick aperture to two sides, and the internal layer arch ring of arc roll-over protective structure, support are installed
Firmly the second arch chamotte brick removes the second arch chamotte brick;The internal layer arch ring of arc roll-over protective structure is shifted, it is resistance to remove third arch
Fiery clay brick, and so on, until whole fire resisting bricked arch roof apertures finish.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710443697.3A CN107268947B (en) | 2017-06-13 | 2017-06-13 | The construction method of arc flue aperture |
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| CN201710443697.3A CN107268947B (en) | 2017-06-13 | 2017-06-13 | The construction method of arc flue aperture |
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| CN107268947A CN107268947A (en) | 2017-10-20 |
| CN107268947B true CN107268947B (en) | 2019-08-02 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110655929B (en) * | 2018-06-28 | 2021-08-13 | 上海梅山钢铁股份有限公司 | Online hole opening method for chimney with brick-concrete structure of coke oven |
| CN109339482A (en) * | 2018-10-15 | 2019-02-15 | 上海宝钢节能环保技术有限公司 | A kind of boring method of underground flue |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374356A (en) * | 2012-04-25 | 2013-10-30 | 五冶集团上海有限公司 | Flue arch crown online opening pipe connecting method for smoke waste-heat utilization of coke oven |
| CN104962296A (en) * | 2015-06-25 | 2015-10-07 | 天津二十冶建设有限公司 | Coke oven basis flue fast construction method free of top die erecting |
| CN206144252U (en) * | 2016-10-31 | 2017-05-03 | 北京京诚科林环保科技有限公司 | Concrete chimney that contains newly -increased flue trompil |
-
2017
- 2017-06-13 CN CN201710443697.3A patent/CN107268947B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374356A (en) * | 2012-04-25 | 2013-10-30 | 五冶集团上海有限公司 | Flue arch crown online opening pipe connecting method for smoke waste-heat utilization of coke oven |
| CN104962296A (en) * | 2015-06-25 | 2015-10-07 | 天津二十冶建设有限公司 | Coke oven basis flue fast construction method free of top die erecting |
| CN206144252U (en) * | 2016-10-31 | 2017-05-03 | 北京京诚科林环保科技有限公司 | Concrete chimney that contains newly -increased flue trompil |
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