CN107305102A - A kind of construction method of stove channel bend inner lining refractory - Google Patents
A kind of construction method of stove channel bend inner lining refractory Download PDFInfo
- Publication number
- CN107305102A CN107305102A CN201610252715.5A CN201610252715A CN107305102A CN 107305102 A CN107305102 A CN 107305102A CN 201610252715 A CN201610252715 A CN 201610252715A CN 107305102 A CN107305102 A CN 107305102A
- Authority
- CN
- China
- Prior art keywords
- anchor studs
- channel bend
- ramming
- construction method
- construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D1/1621—Making linings by using shaped elements, e.g. bricks
Abstract
The present invention relates to the construction method of industrial furnace pipe-line construction construction field, more particularly to stove channel bend inner lining refractory.Technical problem easily destroyed in the resistance to material constructional difficulties in industrial furnace channel bend position and production is mainly solved, construction method of the present invention comprises the following steps：（1）, on the inwall of medium pipeline elbow or rotation angle position, equidistant welding anchor studs；（2）, internal layer ceramic beaverboard it is longitudinally cutting into the fiber lath wide with adjacent anchor studs spacing；（3）, the ceramic beaverboard ring fissure of displacement laid, and be adjacent to medium pipeline inwall closely knit；（4）, by refractory material, up loop-drive is constructed since loop-drive under channel bend, and perpendicular to welding anchor studs direction, progressively carry out ramming and form cylindric ramming body, refractory material target thickness is anchor studs length+20mm.Present invention is mainly used for the construction of industrial furnace medium pipeline elbow and repairing.
Description
Technical field
The present invention relates to industrial furnace pipe-line construction construction field, more particularly to stove channel bend inner lining refractory
Construction method.
Background technology
Medium pipeline is the important part of industrial furnace, and pumped (conveying) medium carries certain temperature and pressure requirements, according to
GB50211-2004《Code for construction and acceptance of brick works for industrial furnaces》、GB50309-2007《Industrial furnace masonry project quality is tested
Receive specification》It is required that, heat insulation bundling or the progress heat-insulated construction of liner outside progress general to medium pipeline.And the heat-insulated construction of liner is current
Using the method for interior block insulating brick, the method is more convenient to straightway pipeline construction, suitable, and rectilinear duct is laid bricks from lower past
Upper to carry out, building construction is first constructed lower half circle ceramic insulating material and lightweight thermal insulation brick, then branch upper half is circular " arch tire ", to take out tire
Mode builds upper semi-circle light-weight brick by laying bricks or stones, and clogs upper ceramic insulating material.But to channel bend position or rotation angle position, using this
The brick difficulty of construction of tradition is than larger：One is that must be provided with various shapes " outstanding tire " to coordinate molding, and two be that must turn by elbow
The angle at angle is thermally shielded after brick machining and constructed, and three be that local location is brick can not be completely by " sting seam build " and " fissure of displacement block "
Code requirement is carried out, and four be that construction effect is low, only straightway construction effect 40 ~ 50%.
This elbow rotation angle position lays bricks construction method specifically, is that domestic industry stove pipeline is generally shown in Fig. 1 using method,
Bottom is ceramic beaverboard 1, then builds clayey insulating brick 2 by laying bricks or stones.It is defeated due to bearing in pipeline rotation angle position from using effect
Send the impact of medium and wash away, along with pipe temperature stress deformation and the hot swollen shrinkage of resistance to material, inner lining refractory material rotation angle position is most
It is vulnerable to destruction or caves in, causes transport medium not smooth, have impact on production；Caved in additionally, due to inner lining refractory material, cause pipe
Road heat insulating function is lost, and pipeline outer wall temperature is high, and the loss of produced on-site operating environment and radiating is have impact on again.
The content of the invention
It is an object of the invention to provide a kind of construction method of stove channel bend inner lining refractory, industry is mainly solved
Technical problem easily destroyed, is proposed in industrial furnace pipeline first in the resistance to material constructional difficulties in stove channel bend position and production
The resistance to material construction of bend part, conventional refractory brick brick laying method is not used, using the plastic refractory of low plastic index, is smash
The construction method beaten.
The technical scheme is that：A kind of construction method of stove channel bend inner lining refractory, including following step
Suddenly：
（1）, on the inwall of medium pipeline elbow or rotation angle position, equidistant welding anchor studs；
（2）, internal layer ceramic beaverboard it is longitudinally cutting into the fiber lath wide with adjacent anchor studs spacing；
（3）, the ceramic beaverboard ring fissure of displacement laid, and be adjacent to medium pipeline inwall closely knit；
（4）, by refractory material, up loop-drive is constructed since loop-drive under channel bend, and perpendicular to welding anchor studs direction, by
Step carries out ramming and forms cylindric ramming body, and refractory material target thickness is anchor studs length+20mm.
The anchor studs are Y type anchor studs, and anchor studs length is：Refractory masses target thickness -20mm；When ramming is built by laying bricks or stones
From one end of elbow or rotation angle position toward another extreme direction, progressively ramming, and anchor ring carries out wharf's pavement quality in ramming body.This hair
Bright innovative point is：Ramming body does not stay dilatation joint, it have between inner-walls of duct thickness be 30~40mm ceramic beaverboards, by
In thermal expansion process, ramming volume expansion stress is inwardly expanded due to no dilatation joint, can only be along to circumferential axis direction
Compressed ceramic fiberboard is expanded, when blowing out or pipeline medium temperature return to normal temperature, and ramming body is overall " retraction ", so
Whole ramming body is unlikely to deform and ftractureed.If handled according to conventional moldable form of construction work joint-cutting, barrel-shaped ramming body is not
One complete entirety.During expanded by heating, ramming body is extruded and swollen to ceramic beaverboard direction to reserved joint-cutting simultaneously
Swelling pressure contracts, and the two direction swelling stresses are often uneven in different parts, is expanded close to ramming body at joint-cutting to joint-cutting direction
Stress is big, small to ceramic beaverboard direction swelling stress；Ramming body office is so caused in middle part just to anti-between joint-cutting
Ftracture and deform in portion；In addition when blowing out or pipeline medium temperature return to normal temperature, ramming body is nor overall " retraction ", local
Deformation and cracking further aggravate, and the time is not long, there is ramming body cracking and the de- risk peeled off.
The beneficial effects of the invention are as follows：4-5 times of the bend part construction effect of resistance to material can be improved, and it is resistance to improve bend part
Material can resist the ability that pumped (conveying) medium washes away, and occur laying bricks the risk caved in reduction production, improves the heat-insulated work(of pipe lining
Effect, it is ensured that the stabilization of industrial furnace medium pipeline is used.Have compared with conventional pipeline elbow and the resistance to material of rotation angle position lay bricks construction
Clear superiority：（1）, need not make " outstanding tire " carry out formwork；（2）, do not need various types of special form bricks to coordinate to build by laying bricks or stones；（3）、
It need not carry out cutting brick in addition；（4）, do not need every piece of refractory brick block-by-block " sting block, the fissure of displacement build "；（5）, do not need it is brick
Aid in the construction of fire resisting chamotte；Due to the content that need not construct above, directly constructed with ramming mass, substantially increase construction and imitate
Rate.
Brief description of the drawings
The generally conventional constructing structure schematic diagrames of Fig. 1.
Fig. 2 is constructing structure figure of the present invention.
In figure：1- ceramic beaverboards；2- clayey insulating bricks；3- anchor studs；4- refractory materials.
Embodiment
Reference picture 2, with Ф 1820mm hot-air ducts 90°Exemplified by the resistance to material construction of corner elbow, specific implementation process is such as
Under：
（1）, on the inwall of medium pipeline elbow or rotation angle position, it is equidistant welding anchor studs 3；Anchor studs 3 are Y types, length
150mm, material Q235B；
（2）, internal layer ceramic beaverboard 1 it is longitudinally cutting into the fiber lath wide with adjacent anchor studs spacing；
（3）, the ring fissure of displacement of ceramic beaverboard 1 laid, and be adjacent to medium pipeline inwall closely knit；
（4）, refractory material 4 using the low index plastic refractory product of Pu exotic materials Co., Ltds, model is PN-
KD42；Low index plastic refractory：Al2O3The g/cm of >=42 %, bulk density >=2.23, the MPa of rupture strength >=2.5, line
The % of rate of change≤- 0.8, thermal conductivity factor（500℃）≤0.77 W/m·K.By low index plastic refractory under channel bend
Loop-drive starts up loop-drive construction, and perpendicular to welding anchor studs direction, progressively carries out ramming and form cylindric ramming body, fire resisting
Material object thickness is anchor studs length+20mm；
（5）, ramming when building by laying bricks or stones from one end of elbow or rotation angle position toward another extreme direction, progressively ramming, and the ring in ramming body
Face carries out wharf's pavement quality.Ramming body does not stay dilatation joint.
Construction organization：The people of welder 1, material working tool transmit 1 people, ramming 1 people of construction, complete construction, total construction volume within 8 hours
3 people * 8 hours=24（People hour）.If according to conventional construction technology of laying bricks, needing personnel：Material working tool transmits 2 people, system
Make " outstanding tire " 1 people, cutting brick and stirring fire clay 1 people, lay bricks 2-3 people（Construction space is small, and 2-3 people is past in the middle of elbow corner
Separately construct at two）, 16 hours（2 class's systems）Construction, total construction volume could be completed（2+1+1+2.5）People * 16 hours=104
（People hour）；New process improves 4.33 times than effect that common process method is constructed.
The present invention is also further enhanced in addition to it can greatly improve construction effect in stable operation and effect of heat insulation,
Parallel-adder settle-out time was up to more than 3 years, and pipeline outer wall temperature is also further declined（It see the table below 1）, averagely have dropped
16.52%；And it is low to implement the cost of the technology, efficiency of construction is high, and also being compared using the construction quality of moldable ramming can
Control.
The equidistant measurement outside wall temperature of table 1, pipeline outer wall
| Project, outside wall temperature DEG C | -3000mm | -2000mm | -1000mm | At elbow outer arc top 0mm | +1000mm | +2000mm | +3000mm | It is average |
| Routine is laid bricks elbow | 87 | 93 | 89 | 86 | 87 | 92 | 89 | 89 |
| The ramming elbow of the present invention | 76 | 78 | 74 | 72 | 74 | 76 | 70 | 74.3 |
Claims (5)
1. a kind of construction method of stove channel bend inner lining refractory, it is characterized in that comprising the following steps：
（1）, on the inwall of medium pipeline elbow or rotation angle position, equidistant welding anchor studs；
（2）, internal layer ceramic beaverboard it is longitudinally cutting into the fiber lath wide with adjacent anchor studs spacing；
（3）, the ceramic beaverboard ring fissure of displacement laid, and be adjacent to medium pipeline inwall closely knit；
（4）, by refractory material, up loop-drive is constructed since loop-drive under channel bend, and perpendicular to welding anchor studs direction, by
Step carries out ramming and forms cylindric ramming body.
2. the construction method of a kind of stove channel bend inner lining refractory according to claim 1, it is characterized in that step 4
From one end of elbow or rotation angle position toward another extreme direction during ramming, progressively ramming, and anchor ring is carried out at plucking in ramming body
Reason.
3. the construction method of a kind of stove channel bend inner lining refractory according to claim 1 or 2, it is characterized in that smashing
Beat body and do not stay dilatation joint.
4. the construction method of a kind of stove channel bend inner lining refractory according to claim 1, it is characterized in that described
Anchor studs are Y type anchor studs.
5. the construction method of a kind of stove channel bend inner lining refractory according to claim 1, it is characterized in that fire resisting
Material object thickness is anchor studs length+20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610252715.5A CN107305102A (en) | 2016-04-22 | 2016-04-22 | A kind of construction method of stove channel bend inner lining refractory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610252715.5A CN107305102A (en) | 2016-04-22 | 2016-04-22 | A kind of construction method of stove channel bend inner lining refractory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107305102A true CN107305102A (en) | 2017-10-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610252715.5A Pending CN107305102A (en) | 2016-04-22 | 2016-04-22 | A kind of construction method of stove channel bend inner lining refractory |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359155A (en) * | 2020-10-30 | 2021-02-12 | 张家港宏昌钢板有限公司 | Method for repairing local lining refractory falling of blast furnace top gas ascending pipeline |
| CN113551103A (en) * | 2021-06-30 | 2021-10-26 | 上海宝冶集团有限公司 | Method for fixing super heat-insulating material of water beam of heating furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183148A (en) * | 2011-04-11 | 2011-09-14 | 山西太钢不锈钢股份有限公司 | Process for repairing thermal insulating layer in a pipeline of heating furnace |
| CN203550529U (en) * | 2013-08-21 | 2014-04-16 | 上海宝钢工业技术服务有限公司 | Lining masonry construction of pitch coke rotary kiln |
| CN104567414A (en) * | 2013-10-22 | 2015-04-29 | 五冶集团上海有限公司 | Building control method of lining of tubular kiln |
-
2016
- 2016-04-22 CN CN201610252715.5A patent/CN107305102A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183148A (en) * | 2011-04-11 | 2011-09-14 | 山西太钢不锈钢股份有限公司 | Process for repairing thermal insulating layer in a pipeline of heating furnace |
| CN203550529U (en) * | 2013-08-21 | 2014-04-16 | 上海宝钢工业技术服务有限公司 | Lining masonry construction of pitch coke rotary kiln |
| CN104567414A (en) * | 2013-10-22 | 2015-04-29 | 五冶集团上海有限公司 | Building control method of lining of tubular kiln |
Non-Patent Citations (1)
| Title |
|---|
| 邢敏 等: "《工业炉维修问答》", 31 July 2006, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359155A (en) * | 2020-10-30 | 2021-02-12 | 张家港宏昌钢板有限公司 | Method for repairing local lining refractory falling of blast furnace top gas ascending pipeline |
| CN113551103A (en) * | 2021-06-30 | 2021-10-26 | 上海宝冶集团有限公司 | Method for fixing super heat-insulating material of water beam of heating furnace |
| CN113551103B (en) * | 2021-06-30 | 2022-09-16 | 上海宝冶集团有限公司 | Method for fixing super heat-insulating material of water beam of heating furnace |
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Application publication date: 20171031 |