CN2215668Y - Arc shape furnace top with turnable joint - Google Patents
Arc shape furnace top with turnable joint Download PDFInfo
- Publication number
- CN2215668Y CN2215668Y CN 94245538 CN94245538U CN2215668Y CN 2215668 Y CN2215668 Y CN 2215668Y CN 94245538 CN94245538 CN 94245538 CN 94245538 U CN94245538 U CN 94245538U CN 2215668 Y CN2215668 Y CN 2215668Y
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- CN
- China
- Prior art keywords
- arch
- block
- furnace
- furnace roof
- blocks
- 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.)
- Expired - Fee Related
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model relates to an arch furnace top with a rotary joint, which is provided with at least two arch blocks made of fire-resistant materials along the span direction of the furnace, wherein the adjacent blocks are connected with each other in the manner of relative rotation, and the arch blocks can generate proper free deformation to obviously reduce the stress in the furnace top and effectively prolong the service life of the furnace. The utility model is better than brick arches, or integral fire-resistant casting material or plastic arches. The utility model is an ideal furnace top for industrial heat treating furnaces with small or middle spans, such as heating furnaces, soaking furnaces, annealing furnaces, etc.
Description
Be with the arch furnace roof of swivel, belong to the furnace roof (bell) of heat-treatment furnace.
The industrial heat-treatment furnace that span 5m is following as heating furnace, soaking pit, annealing furnace etc., accounts for existing more than 70% of heat-treatment furnace.They are except that small part adopts the flat-tope structure form, and major part all is to adopt the arch top construction.Traditional vault construction can be divided into two classes: a class is a brick arch, build by laying bricks or stones with refractory brick and fire clay, because brickwork joint is many, heat dissipation capacity is big, wastes energy, and construction is trouble also, simultaneously because the volume stability of brick is poor, masonry quality is subjected to artifact to influence reasons such as bigger, and service life is short, generally has only 9～12 months; Another kind of is whole arch furnace roof with castable refractory or moldable pre-formed or field fabrication.This arch furnace roof is not provided with rotating joint in stove span direction, and in use because inside produces bigger thermal stress and can not discharge, furnace roof is easy to cracking, breakage and peels off, thereby generally also have only about 12 months service life.
At the above problem that prior art exists, the application's purpose just provides and a kind ofly can significantly reduce thermal stress, thus the arch furnace roof that can increase the service life.
For achieving the above object, the application's basic design is that swivel is set on vault, makes vault can produce Free Transform under high temperature action and discharges internal stress.Furnace roof has two refractory material arch blocks at least along the span direction of stove, generally get final product with two or three, contact-making surface at adjacent block constitutes swivel, the splicing that is them is that it can be relatively rotated, so in use, the arch block just can produce the Free Transform of appropriateness and discharge stress in the furnace roof.
It is to say that under external force and temperature action, the radius of curvature of adjacent block can freely change that what is called relatively rotates, and radius of curvature reduces when temperature reduces, and radius of curvature increased when temperature raise.According to external force and temperature stress distribution situation, the radius of curvature of two adjacent blocks both can increase or reduce simultaneously, also can an increase, and another reduces.The application is said, and to relatively rotate joint then be that technical characterictic by the contact-making surface (splicing place) of adjacent block constitutes.
It is that the joint constituted mode of adjacent block can be that adjacent block can be made connected mode in relative rotation: from the section of stove span direction, splicing place at adjacent block, the middle part of a block has an arch section that falls at least, the middle part of another block has an arch section that protrudes at least, the mutual coupling of recessed with protruding arch section contacts, and in the upper and lower of block splicing place a slit is arranged all.The rotational angle that block produces owing to thermal stress is small, so said slit is also very little, is generally about 2mm and gets final product.
From the length direction of stove is the width of block, and above-mentioned recessed and protruding part is one respectively and connects the arc groove at middle part, block edge and the arc cylinder of coupling with it.From constituting the angle of swivel, above-mentioned groove and cylinder can not connect yet, promptly can be along segment section setting in the block edge, but from construction and stressed rational angle, should connect, and from the section of stove span direction, adjacent block splicing place have only an arch section that falls in and one with it the arch section that protrudes of coupling for well.
Said recessed and protruding arc preferably all is half garden of a same diameter.
The application's furnace roof and existing brick arch or whole castable refractory or moldable arch are compared, because swivel can make the both sides donor produce the Free Transform of appropriateness, thereby greatly reduce the stress in the stove item, its service life can be prolonged effectively, and simple in structure, stressed reasonable, installation and maintenance are convenient, technical economic benefit is good, is the comparatively ideal furnace roof that is applicable to the medium and small span stove.
Now further specify as follows to the application's related content in conjunction with the accompanying drawings and embodiments:
Fig. 1 is used for the arch furnace roof of band swivel of heater for rolling steel and the generalized section of furnace construction;
Fig. 2 is the generalized section by the arch furnace roof of the block splicing of three band swivels.
Embodiment 1: Fig. 1, and a heater for rolling steel, stove inner chamber span L=3248mm, its furnace roof is made up of arch refractory material block A and B.The material of block A and B steel fibre castable refractory, prefabricated shaping, on-site consolidation is combined into furnace roof.Form swivel at assembling part.There is half a garden part that falls at the middle part of block A, and there are half a garden part that protrudes, the radius R in two and half gardens in the middle part of block B
2=70mm, the radius R of vault
1=3248mm.Two and half garden parts connect at the width of two blocks.The thickness H=30mm of block A and B, during splicing, the slit of about 2mm is all left in the joint upper and lower, and two blocks can relatively rotate when producing distortion under heat effect.Because half recessed and protruding garden part is in contact with one another, furnace heat is scattered and disappeared.For strengthening heat insulation effect, vault top adds lightweight thermal insulation layer C.
The structural relation and the prior art of stove item and stove are basic identical, furnace roof is delivered to stress on the steel construction of stove by arch springing, be that block A and B pass to column channel-section steel 3 by arch springing channel-section steel 4 with stress, pull bar 2 tensions are arranged between the channel-section steel 3, pull bar 2 is fastening by nut 1.Furnace roof has alumina silicate fibre 5 by furnace wall heavy layer 7 and 6 supportings of furnace wall light layer between channel-section steel 3 and the furnace wall light layer 6.
The arch furnace roof of this band swivel, after tested, the furnace roof surface temperature is the highest to be no more than 110 ℃, than low 50～60 ℃ of brick arch surface temperature.A span 4m, the heater for rolling steel of long 20m, capable of reducing energy consumption every year on average amounting to marked the about 300t of coal, estimates service life and can reach 2～5 years.Technical economic benefit all is good.
Embodiment 2: Fig. 2, this is by the arch furnace roof of three refractory material block A, B, D splicing, forms two swivels.The structural relation of furnace roof and stove repeats no more with embodiment 1.
Claims (4)
1, the arch furnace roof of band swivel is used for industrial heat treatment stove, it is characterized in that having two refractory material arch blocks at least along the span direction of stove, being spliced to form two blocks and can making joint in relative rotation of adjacent block.
2, according to the said furnace roof of claim 1, connected mode is to it is characterized in that doing in relative rotation by said adjacent block: from the section of stove span direction, junction at two blocks, there is at least one arch section that falls at the middle part of a block, there is at least one arch section that protrudes at the middle part of another block, the mutual coupling of recessed with protruding arch section contacts, and all there is a slit upper and lower of block junction.
3,, it is characterized in that said recessed and protruding arch section all is half garden of a same diameter according to the said furnace roof of claim 2.
4, according to claim 2 or 3 said furnace roofs, it is characterized in that having two arch block A and B, its upper surface has lightweight thermal insulation layer C, and said recessed and protruding part is R
2Half garden of=70mm, the furnace roof radius R
1=3248mm, furnace roof interior span L=3248mm, the thickness H=300mm of block A and B, the about 2mm in said slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94245538 CN2215668Y (en) | 1994-11-25 | 1994-11-25 | Arc shape furnace top with turnable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94245538 CN2215668Y (en) | 1994-11-25 | 1994-11-25 | Arc shape furnace top with turnable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2215668Y true CN2215668Y (en) | 1995-12-20 |
Family
ID=33851297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94245538 Expired - Fee Related CN2215668Y (en) | 1994-11-25 | 1994-11-25 | Arc shape furnace top with turnable joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2215668Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107921499A (en) * | 2015-07-10 | 2018-04-17 | Sms集团有限公司 | Heat-proof device |
| CN114279222A (en) * | 2022-01-10 | 2022-04-05 | 中钢集团洛阳耐火材料研究院有限公司 | Building method of vault structure of high-temperature shuttle kiln |
-
1994
- 1994-11-25 CN CN 94245538 patent/CN2215668Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107921499A (en) * | 2015-07-10 | 2018-04-17 | Sms集团有限公司 | Heat-proof device |
| CN114279222A (en) * | 2022-01-10 | 2022-04-05 | 中钢集团洛阳耐火材料研究院有限公司 | Building method of vault structure of high-temperature shuttle kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |