CN205057021U - Lid keeps warm - Google Patents
Lid keeps warm Download PDFInfo
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- CN205057021U CN205057021U CN201520770727.8U CN201520770727U CN205057021U CN 205057021 U CN205057021 U CN 205057021U CN 201520770727 U CN201520770727 U CN 201520770727U CN 205057021 U CN205057021 U CN 205057021U
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- insulation cover
- warehousing
- molten iron
- transportation facilities
- housing
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Abstract
The utility model relates to a lid keeps warm, on the lid fits the warehousing and transportation facilities of warehousing and transportation molten iron or molten steel, personally experiencing sth. Part of the body including casing and the heat preservation of locating the casing internal surface, being equipped with the liquid import on the casing, liquid is imported downwardly extending and is run through the bodily form that should keep warm and becomes liquid inlet channel. The utility model discloses a set up lid keeps warm, can realize tapping a blast furnace / keep warm to the warehousing and transportation facilities when tapping and in molten iron / molten steel transportation, avoid molten iron / molten steel surface calorific loss great, the calorific loss that causes because of the mobile mixing effect of molten iron / molten steel among the tapping process that especially can reduce to tap a blast furnace to the temperature drop of reduction ladle or ladle, reduce energy consumption, reduction in production cost and pollutant emission.
Description
Technical field
The utility model relates to a kind of insulation cover, is incubated for being covered on hot-metal bottle or ladle.
Background technology
In steel smelting procedure, the high temperature liquid iron of blast furnace refining needs to be transported to converter by ladle and further smelts, to obtain composition and all qualified molten steel of temperature, and the qualified molten steel of converter smelting also needs to be transported to refining zone and continuous casting zone by ladle, to carry out double refining and to pour into strand.Ladle and ladle are as the storage-transport vessel of molten iron and molten steel, and the time of splendid attire molten iron is usually longer, is the key link that temperature drop appears in molten iron and molten steel.At present, domestic most of ladle are all without insulation cover, the upper opening heat radiation that ladle is opened wide is larger, account for greatly 1/3 of whole ladle temperature drop, when the colder region of winter, environment or rainy weather, the temperature drop amplitude of molten iron handbag mouth is larger, and ladle is similar with ladle situation, and ladle opening part dispels the heat also very serious.
Along with the continuous increase of iron and steel enterprise's energy-saving and emission-reduction pressure, small part iron and steel enterprise has started to adopt insulation cover to be incubated ladle and ladle, thus prevent a large amount of of bag mouth place heat to scatter and disappear, but, the most complex structure of current insulation cover, processing technology is loaded down with trivial details, uses convenient not stable.The more important thing is, existing insulation cover can only be incubated inclusion in wait or transportation, on tap a blast furnace or tapping etc. dispels the heat link the most serious, but can not play insulation effect.Generally speaking, the tapping duration of ladle is usually about 30min to 50min, and when ladle tonnage is comparatively large or blast furnace is less, tapping duration also can be longer, and the process temperature that taps a blast furnace loss accounts for about 35% of the loss of molten iron storage and transport process total moisture content.Although the tapping time of ladle correspondence is shorter, because the contact area of inclusion during tapping and molten steel and cold air is all very large, therefore lower the temperature also clearly.The temperature drop of molten iron and molten steel all can affect the production of next link, can waste a large amount of energy simultaneously.Therefore, the insulation cover of development of new, reducing and to tap a blast furnace and ladle in tapping process or the temperature loss of ladle are technical problems urgently to be resolved hurrily in current molten iron and molten steel storage and transport process, is also reduce energy consumption, the important means of improving energy efficiency.
Utility model content
The utility model embodiment relates to a kind of insulation cover, at least can solve the segmental defect of prior art.
The utility model embodiment relates to a kind of insulation cover, be covered on the warehousing and transportation facilities of accumulating molten iron or molten steel, comprise housing and the first thermal insulator being located at described shell inner surface, described housing is provided with liquid-inlet, described liquid-inlet to downward-extension and run through described first thermal insulator formed feed pathway.
As one of embodiment, also comprise the access cover can closing or open described feed pathway, described access cover activity is located on described housing.
As one of embodiment, described access cover comprises shell and is located at the second thermal insulator of described inner surface of outer cover, the shape of described shell and described second thermal insulator and the shape of size and described feed pathway and size suitable.
As one of embodiment, described second thermal insulator adopts identical insulation construction with described first thermal insulator.
As one of embodiment, described first thermal insulator comprises steel screen layer and heat insulating refractory material layer, and described steel screen layer and described housing surround a filling chamber, and described heat insulating refractory material layer is filled in this filling chamber.
As one of embodiment, the horizontal section area of described housing is greater than the horizontal section area of described steel screen layer, in the horizontal cross sectional geometry of described steel screen layer and size and described warehousing and transportation facilities openend the shape on edge and size suitable, when described insulation cover is covered on described warehousing and transportation facilities, described steel screen layer embeds edge in described warehousing and transportation facilities openend.
As one of embodiment, described housing comprises level board and vertical plate, described vertical plate is fixed on bottom described level board, and ringwise and annular diameters is identical with the horizontal cross-section diameter of described steel screen layer, the thickness of described heat insulating refractory material layer is greater than the height of described vertical plate to described vertical plate.
As one of embodiment, the thickness of described heat insulating refractory material layer is 10 ~ 150mm.
As one of embodiment, described liquid-inlet is track type, comprises two semi-circular section of square section of both sides described in middle square section and apportion.
As one of embodiment, described housing is provided with the handle of lifting or mobile described insulation cover.
The utility model embodiment at least achieves following beneficial effect:
(1) by arranging insulation cover, can realize when tapping a blast furnace/tapping and in molten iron/molten steel transportation, warehousing and transportation facilities is incubated, avoid molten iron/molten steel surface thermal loss larger, especially can reduce to tap a blast furnace/tapping process in the thermal loss that causes because of the flowing stirring action of molten iron/molten steel, thus reduce the temperature drop of ladle or ladle, reduce energy resource consumption, reduce production cost and pollutant emission.
(2) because insulation cover is tapping a blast furnace or playing protective action in tapping process, decrease and tap a blast furnace or the generation of high-temperature flue gas and dust in tapping process, reduce the pollutant emission to surrounding environment.
(3) because insulation cover is tapping a blast furnace or playing certain buffer action in tapping process, molten iron and the molten steel amount of oxidation by air can be reduced, improve recovery rate of iron.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the device of the raising molten iron accumulating efficiency that Fig. 1 provides for the utility model embodiment;
The structural representation of the thermal insulation casing that Fig. 2 provides for the utility model embodiment;
The main TV structure schematic diagram of the insulation cover that Fig. 3 provides for the utility model embodiment;
The plan structure schematic diagram of the insulation cover that Fig. 4 provides for the utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
embodiment one
As Fig. 1 and Fig. 2, the present embodiment relates to one and taps a blast furnace with sleeve pipe, comprise sleeve body 3, this sleeve body 3 defines an inner chamber, this inner chamber forms the passage that taps a blast furnace, and namely in the process of tapping a blast furnace, makes molten iron 2 flow in molten iron warehousing and transportation facilities 5 by this sleeve body 3, molten iron 2 and air can be isolated, the process of tapping a blast furnace is carried out as far as possible under the condition of sealing thermal insulation protection.Described sleeve body 3 comprises upper funnel shape entrance 11 and the tubular Drainage Section 12 of lower post, and described entrance 11 is coaxially connected with described Drainage Section 12; Described entrance 11 top diameter is greater than the width of Molten iron chute 1.Arrange falred entrance section 11 to be convenient to accept molten iron 2, top, Drainage Section 12 is communicated with bottom entrance 11, is introduced in molten iron warehousing and transportation facilities 5 by molten iron 2.During use, Molten iron chute 1 port of export stretches in this falred entrance section 11, is positioned at above molten iron warehousing and transportation facilities 5 or stretches to molten iron warehousing and transportation facilities 5 bottom Drainage Section 12; For this reason, the tangent line at peak place, axis and the angle of horizontal direction of design entry section 11 are 15 ~ 60 °, namely make entrance 11 openend towards Molten iron chute 1 side, are convenient to Molten iron chute 1 and can insert easily in falred entrance section 11; In addition, the tangential direction at design minimum point place, sleeve body 3 axis is vertical direction, namely makes the outlet at bottom cross section of Drainage Section 12 when tapping a blast furnace and horizontal direction parallel, vertically injects molten iron warehousing and transportation facilities 5 after making molten iron 2 leave sleeve body 3 as far as possible.Originally tap a blast furnace with service life of sleeve pipe for improving, originally tapping a blast furnace adopts refractory sleeve with sleeve pipe, and this refractory sleeve is preferably to be suppressed by isostatic pressed by refractory material and forms.The vertical height of sleeve body 3, depending on actual conditions, is generally larger than the distance of trough outlet end to molten iron warehousing and transportation facilities 5 top of tapping a blast furnace.
As a kind of preferred version of the present embodiment, described sleeve body 3 is in streamlined, namely passage is tapped a blast furnace from top to bottom in arc line shaped, the parabolic shape that this camber line flows with molten iron when tapping a blast furnace 2 is as far as possible similar to, namely the axis of this sleeve body 3 is overlapping with the axis of molten iron fluidization tower or as far as possible overlapping, can effectively reduce the impact to sleeve body 3 inwall when molten iron 2 flows.Usually, the radial section of entrance 11 and Drainage Section 12 is preferably all in annular, and namely the radial section of the inner and outer wall of entrance 11 and Drainage Section 12 is circle, can reduce to wash away friction between molten iron 2 and sleeve body 3 inwall; Certainly also the special shapes such as square or triangle can be adopted as.
In the present embodiment, the wall thickness of described entrance 11 and described Drainage Section 12 is 30 ~ 100mm, the top diameter 80 ~ 150mm larger than the width of Molten iron chute 1 of described entrance 11, the caliber 30 ~ 60mm larger than the width of Molten iron chute 1 of described Drainage Section 12.
embodiment two
As Fig. 3-Fig. 4, the present embodiment relates to a kind of insulation cover 4, be covered on the warehousing and transportation facilities of accumulating molten iron 2 or molten steel, comprise housing 41 and the first thermal insulator being located at described housing 41 inner surface, described housing 41 is provided with liquid-inlet, described liquid-inlet to downward-extension and run through described first thermal insulator formed feed pathway 44.Wherein, the length of liquid-inlet, width dimensions or diameter should be greater than the diameter of molten iron fluidization tower or molten steel fluidization tower, and molten iron 2 or molten steel can be entered in above-mentioned warehousing and transportation facilities along above-mentioned feed pathway 44.By arranging this insulation cover 4, the nearly closed inner chamber of accommodation molten iron 2/ molten steel is surrounded with warehousing and transportation facilities body, can be incubated warehousing and transportation facilities when tapping a blast furnace/tapping and in molten iron 2/ molten steel transportation, avoid molten iron 2/ molten steel surface thermal loss comparatively large, especially can reduce to tap a blast furnace/tapping process in the thermal loss that causes because of the flowing stirring action of molten iron 2/ molten steel.This liquid-inlet can be circle, or in track type, and this track type liquid-inlet comprises two semi-circular section of square section of both sides described in middle square section and apportion; The liquid-inlet of track type has the width of one end, due to situation that Molten iron chute 1 swings when can adapt to tap a blast furnace.Preferably, aforesaid liquid import is positioned at housing 41 center position, and feed pathway 44 is axially vertical direction, and namely this feed pathway 44 is an inlet opening.
Optimize above-mentioned insulation cover 4, this insulation cover 4 also comprises the access cover 6 can closing or open described feed pathway 44, and the activity of described access cover 6 is located on described housing 41.By the inner chamber that this access cover 6 sealing thermal insulation lid 4 surrounds with warehousing and transportation facilities body, make molten iron 2/ molten steel be in closed space in storage and transport process, the thermal loss of molten iron 2/ molten steel can be reduced further.Therefore, the shape of this access cover 6 should with the form fit of liquid-inlet, can splice with housing 41 thus close described feed pathway 44; Further, this access cover 6 comprises shell, this inner surface of outer cover also arranges insulation construction, namely the second thermal insulator is set at this inner surface of outer cover, the shape of described shell and described second thermal insulator and the shape of size and described feed pathway 44 and size suitable, thus this access cover 6 can insert in described feed pathway 44 to close this feed pathway 44.Preferably, above-mentioned housing 41 adopts same material with above-mentioned shell, all adopts steel structure, and described second thermal insulator adopts identical insulation construction with described first thermal insulator, to ensure the temperature homogeneity of above-mentioned insulation cover 4.
Continue the structure of above-mentioned insulation cover 4, the structure of described first thermal insulator and described second thermal insulator is as follows: comprise steel screen layer 43 and heat insulating refractory material layer 42, described steel screen layer 43 surrounds a filling chamber with described housing 41, and described heat insulating refractory material layer 42 is filled in this filling chamber.Steel housing 41 skeletons and supporting role, heat insulating refractory material layer 42 mainly plays insulation effect, and heat insulating refractory material is fixed on steel housing 41 by steel screen layer 43, prevents heat insulating refractory material from dropping.This heat insulating refractory material can adopt thermal insulation fire-resistant cotton.Certainly, above-mentioned first thermal insulator and the second thermal insulator also can adopt and form at steel housing 41 inner surface cast heat insulating refractory material, but technique comparatively to adopt steel wire to wrap up thermal insulation fire-resistant cotton complicated, cost is relatively high, safeguards, changes and relatively bother.The ring like steel wire net that above-mentioned steel screen layer 43 comprises horizontally disposed bottom steel wire and vertically arranges, ring like steel wire net is connected with bottom steel wire is one-body molded, ring like steel wire net is fixed on housing 41 inner surface, thus making steel screen layer 43 and housing 41 surround a filling chamber, the height of ring like steel wire net is identical with the thickness of heat insulating refractory material layer 42.In the present embodiment, the thickness of heat insulating refractory material layer 42 is 10 ~ 150mm; The thickness of steel wire is 1-10mm, realizes heat insulating refractory material to be tightly fixed on housing 41.
The above-mentioned insulation cover 4 of further optimization, the horizontal section area of described housing 41 is greater than the horizontal section area of described steel screen layer 43, in the horizontal cross sectional geometry of described steel screen layer 43 and size and described warehousing and transportation facilities openend the shape on edge and size suitable, when described insulation cover 4 is covered on described warehousing and transportation facilities, described steel screen layer 43 embeds edge in described warehousing and transportation facilities openend.Because molten iron 2/ molten steel warehousing and transportation facilities openend is generally circle, therefore, the horizontal cross-section of above-mentioned steel screen layer 43 and the horizontal cross-section of heat insulating refractory material layer 42 are circle, and the horizontal cross-section diameter of steel screen layer 43 be approximately equal to or be slightly less than warehousing and transportation facilities openend in the diameter on edge, cover warehousing and transportation facilities by refractory masses.Housing 41 can be a horizontal steel plate, and its size is slightly larger than the diameter of the outer, openend of warehousing and transportation facilities; Or adopt following structure: described housing 41 comprises level board and vertical plate, described vertical plate is fixed on bottom described level board, ringwise and annular diameters is identical with the horizontal cross-section diameter of described steel screen layer 43, the thickness of described heat insulating refractory material layer 42 is greater than the height of described vertical plate to described vertical plate.Namely housing 41 has the cover body structure of hat brim type in one, and the brim of a hat surrounds steel screen layer 43 and heat insulating refractory material layer 42, can reduce the exchange heat of heat insulating refractory material and surrounding air; Stretch into bottom steel screen layer 43 in warehousing and transportation facilities, ensure that at least part of heat insulating refractory material is positioned at warehousing and transportation facilities, to improve heat insulation effect.
Continue the structure of above-mentioned insulation cover 4, and as Fig. 3, described housing 41 is provided with the handle 45 of lifting or mobile described insulation cover 4.Usually, handle 45 has two, and the center line along housing 41 is symmetrical arranged, and preferably, radial along housing 41, handle 45 is located at shrinking away from theshell body 41 edge 1/4 radius; This handle 45 can be inverted U, is welded on housing 41 upper surface.Access cover 6 can be articulated with on housing 41, or is bolted on housing 41 by a fixing chain; Access cover 6 is provided with little steel 61, and convenient being positioned over by access cover 6 in feed pathway 44 or in feed pathway 44 is taken out.
embodiment three
As Fig. 1, the present embodiment relates to a kind of device improving molten iron accumulating efficiency, comprise heat preservation channel and be covered on the insulation cover 4 on molten iron warehousing and transportation facilities 5, described insulation cover 4 surrounds a closed inner chamber with molten iron warehousing and transportation facilities 5 body, described insulation cover 4 offers into iron mouth 44, described in described heat preservation channel extends to from Molten iron chute 1 port of export, enter iron mouth 44.Above-mentioned heat preservation channel is preferably and adopts tapping a blast furnace described in embodiment one to use sleeve pipe, and above-mentioned insulation cover 4 is preferably and adopts the insulation cover 4 described in embodiment two.
embodiment four
The present embodiment relates to a kind of method improving molten iron accumulating efficiency, and the method is: on molten iron warehousing and transportation facilities 5, arrange insulation cover 4, and this insulation cover 4 can surround a closed inner chamber with molten iron warehousing and transportation facilities 5 body, this insulation cover 4 offers into iron mouth 44; Form a heat preservation channel, by the molten iron 2 in Molten iron chute 1 from described in enter iron mouth 44 and be introduced in molten iron warehousing and transportation facilities 5.Preferably, described heat preservation channel adopts tapping a blast furnace described in embodiment one to use sleeve pipe, and above-mentioned insulation cover 4 is preferably and adopts the insulation cover 4 described in embodiment two.When tapping a blast furnace, Molten iron chute 1 port of export stretches in entrance 11, stretches in iron mouth 44 bottom described Drainage Section 12.The iron mouth 44 that enters in the present embodiment is the feed pathway 44 described in embodiment two.
Particularly, said method comprises the following steps:
S1: refractory sleeve is set below Molten iron chute 1, Molten iron chute 1 port of export stretches in the falred entrance section 11 of this refractory sleeve, the bottom, Drainage Section 12 of this refractory sleeve stretches to, and insulation cover 4 enters in iron mouth 44, is injected in molten iron warehousing and transportation facilities 5 by molten iron 2 by this refractory sleeve.
S2: fill after molten iron 2 until molten iron warehousing and transportation facilities 5, remove refractory sleeve, and access cover 6 is covered on on iron mouth 44.
S3: transport at follow-up molten iron 2 and in the unloaded exhumation process of molten iron warehousing and transportation facilities 5, remain molten iron warehousing and transportation facilities 5 full stroke covering, to reduce the temperature loss of molten iron 2 and molten iron warehousing and transportation facilities 5 as far as possible.
Actual when using, described refractory sleeve (tapping a blast furnace with sleeve pipe) can be fixed on Molten iron chute 1, or arranges special bracing frame and support this sleeve pipe and move.
In addition, the molten iron warehousing and transportation facilities 5 described in the various embodiments described above is generally hot-metal bottle, and molten steel warehousing and transportation facilities is generally ladle.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an insulation cover, be covered on the warehousing and transportation facilities of accumulating molten iron or molten steel, it is characterized in that: comprise housing and be located at the first thermal insulator of described shell inner surface, described housing is provided with liquid-inlet, described liquid-inlet is to downward-extension and run through described first thermal insulator and form feed pathway.
2. insulation cover according to claim 1, is characterized in that: also comprise the access cover can closing or open described feed pathway, and described access cover activity is located on described housing.
3. insulation cover according to claim 2, it is characterized in that: described access cover comprises shell and is located at the second thermal insulator of described inner surface of outer cover, the shape of described shell and described second thermal insulator and the shape of size and described feed pathway and size suitable.
4. insulation cover according to claim 3, is characterized in that: described second thermal insulator adopts identical insulation construction with described first thermal insulator.
5. the insulation cover according to claim 1 or 4, is characterized in that: described first thermal insulator comprises steel screen layer and heat insulating refractory material layer, and described steel screen layer and described housing surround a filling chamber, and described heat insulating refractory material layer is filled in this filling chamber.
6. insulation cover according to claim 5, it is characterized in that: the horizontal section area of described housing is greater than the horizontal section area of described steel screen layer, in the horizontal cross sectional geometry of described steel screen layer and size and described warehousing and transportation facilities openend the shape on edge and size suitable, when described insulation cover is covered on described warehousing and transportation facilities, described steel screen layer embeds edge in described warehousing and transportation facilities openend.
7. insulation cover according to claim 6, it is characterized in that: described housing comprises level board and vertical plate, described vertical plate is fixed on bottom described level board, ringwise and annular diameters is identical with the horizontal cross-section diameter of described steel screen layer, the thickness of described heat insulating refractory material layer is greater than the height of described vertical plate to described vertical plate.
8. insulation cover according to claim 5, is characterized in that: the thickness of described heat insulating refractory material layer is 10 ~ 150mm.
9. insulation cover according to claim 1 and 2, is characterized in that: described liquid-inlet is track type, comprises two semi-circular section of square section of both sides described in middle square section and apportion.
10. insulation cover according to claim 1 and 2, is characterized in that: described housing is provided with the handle of lifting or mobile described insulation cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520770727.8U CN205057021U (en) | 2015-10-08 | 2015-10-08 | Lid keeps warm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520770727.8U CN205057021U (en) | 2015-10-08 | 2015-10-08 | Lid keeps warm |
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| Publication Number | Publication Date |
|---|---|
| CN205057021U true CN205057021U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520770727.8U Active CN205057021U (en) | 2015-10-08 | 2015-10-08 | Lid keeps warm |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057876A (en) * | 2018-01-12 | 2018-05-22 | 江苏永钢集团有限公司 | A kind of steel ladle cover for reducing offline ladle temperature drop |
| CN108788112A (en) * | 2018-06-25 | 2018-11-13 | 武汉钢铁有限公司 | A kind of the environment protecting thermal insulating lid and application method of disposable hot metal transport tank |
| CN110315059A (en) * | 2018-03-30 | 2019-10-11 | 宝钢特钢有限公司 | It is a kind of for sky packet for use with the ladle heat insulation cover of ingot steel casting and its heat preserving method |
-
2015
- 2015-10-08 CN CN201520770727.8U patent/CN205057021U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057876A (en) * | 2018-01-12 | 2018-05-22 | 江苏永钢集团有限公司 | A kind of steel ladle cover for reducing offline ladle temperature drop |
| CN110315059A (en) * | 2018-03-30 | 2019-10-11 | 宝钢特钢有限公司 | It is a kind of for sky packet for use with the ladle heat insulation cover of ingot steel casting and its heat preserving method |
| CN108788112A (en) * | 2018-06-25 | 2018-11-13 | 武汉钢铁有限公司 | A kind of the environment protecting thermal insulating lid and application method of disposable hot metal transport tank |
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