CN113560555A - Torpedo type hot metal mixer car heat preservation tank cover - Google Patents
Torpedo type hot metal mixer car heat preservation tank cover Download PDFInfo
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- CN113560555A CN113560555A CN202010356046.2A CN202010356046A CN113560555A CN 113560555 A CN113560555 A CN 113560555A CN 202010356046 A CN202010356046 A CN 202010356046A CN 113560555 A CN113560555 A CN 113560555A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 44
- 239000002184 metal Substances 0.000 title claims abstract description 44
- 238000004321 preservation Methods 0.000 title abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 244
- 239000010959 steel Substances 0.000 claims abstract description 244
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 26
- 125000006850 spacer group Chemical group 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 88
- 229910052742 iron Inorganic materials 0.000 claims description 44
- 238000000034 method Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000428 dust Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 101100230509 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-1 gene Proteins 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/12—Travelling ladles or similar containers; Cars for ladles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to a heat-insulating tank cover for a torpedo type torpedo hot metal mixer car, which comprises a first outer steel shell (1), wherein lifting lugs (11) and reinforcing ribs (13) are symmetrically and fixedly arranged on the top surface of the first outer steel shell, and a groove with a downward opening is formed in the bottom surface of the first outer steel shell; the first outer steel shell also comprises an inner steel plate (2), a spacer (21), an inner steel shell (3), a heat-insulating fire-resistant layer (4) and an air hole; the inner steel plates and the inner steel shells are both plate-shaped and matched with the grooves, and the inner steel plates and the inner steel shells are fixedly connected to the inner side walls of the grooves from top to bottom in sequence and are arranged in parallel with the bottom surfaces of the grooves; the heat-insulating refractory layer is paved and fixedly arranged on the bottom surface of the inner steel shell; a plurality of isolating pieces are arranged on the lower side of the inner steel plate; the top surface of the first outer steel shell is provided with a plurality of rain-proof air holes (17), and the inner steel plate, the inner steel shell and the heat-insulating fireproof layer are all provided with a plurality of air holes. The invention has simple structure, light weight, convenient use and operation and good heat preservation and insulation effect.
Description
Technical Field
The invention relates to a tank opening device of molten iron transportation and storage equipment, in particular to a heat-insulating tank cover suitable for a torpedo type iron mixing vehicle.
Background
The torpedo type hot metal mixer car, called as hot metal mixer car for short, is a large-scale molten iron transportation device, has the advantages of small heat loss, long heat preservation time, energy conservation and the like, and can also store molten iron so as to coordinate the temporary unbalanced state of iron making and steel making. Meanwhile, the mixer car can replace a mixer furnace and a common molten iron tank car for steel making, and can also complete the operation procedures of desulfurization, dephosphorization and the like in the molten iron transportation process.
In the process of transporting molten iron, the mixer car generally needs to be subjected to the stages of iron receiving, molten iron pretreatment, slag skimming, waiting, iron dumping, empty tank transportation and the like, the molten iron transportation and waiting time is long, the molten iron temperature is high, and the molten iron heat is lost in three modes of heat conduction, heat radiation and heat convection. Relevant researches show that the heat storage loss of the tank lining, the heat dissipation of the tank wall and the radiation heat loss of the molten iron surface respectively account for 45% -50%, 20% and 20% -30% of the total heat loss, wherein the radiation heat loss of the molten iron surface is mainly the heat loss of the tank opening. The longer the transportation and waiting time are, the larger the temperature drop of molten iron is, the too large temperature drop of molten iron can cause the bottom of the iron mixing car to be in the states of bottom formation, crusting and even the whole iron mixing car to be frozen, and the too large temperature drop can cause the great increase of the energy consumption of the steel making process, thereby causing great economic loss for enterprises. In addition, with the improvement of environmental protection requirements, the tightening of energy-saving policies and the enhancement of law enforcement, steel enterprises are required to continuously enhance the awareness of energy conservation and environmental protection. At present, the iron mixing vehicle used in China has the problems that the temperature drop of molten iron is accelerated and the heat loss is increased due to the fact that a tank car is opened, and a large amount of dust and smoke generated in a tank body are directly discharged into the atmosphere, so that the surrounding environment is polluted. Therefore, the hot metal mixer truck is a development direction of hot metal transportation and storage equipment in the future by covering and insulating the hot metal mixer truck to reduce the heat loss of the hot metal and prevent the smoke and dust from being directly discharged into the atmosphere, and the traditional uncovered hot metal tank truck can not meet the requirements of users any more.
Chinese patent CN103949630B discloses a heat preservation cover for sealing a tank opening of a torpedo hot metal mixer car, wherein inner and outer layer refractory materials are connected and laid in a steel plate with a circular groove through riveting pieces to form a tank cover main body, the steel plate is provided with a stepped hole, a honeycomb heat-resistant body and a rain shield are arranged above the stepped hole, and a rib plate for reinforcing the strength of the heat preservation cover and a lifting lug for hoisting are arranged outside a steel shell. This heat preservation lid can effectively reduce the radiation heat dissipation that the molten iron passes through the jar mouth, can stabilize jar internal gas pressure through the shoulder hole setting and reduce the thermal shock to the heat preservation lid, but the heat preservation lid main part is pour by steel sheet and ectonexine refractory material and forms, heavy in weight, need install special hoisting accessory and carry out opening and closing of heat preservation lid, there is investment cost height, the not enough scheduling problem of site space, and be difficult to the manual work under equipment fault condition and open and close, and this heat preservation lid does not design the bleeder vent, the heat preservation lid agrees with the jar mouth after the thermal expansion, present the negative pressure after the temperature descends in the jar car, lead to the problem that the heat preservation lid is difficult to open.
Therefore, the development of a novel heat-insulating tank cover for a torpedo type iron mixing vehicle, which has the advantages of simple equipment, light weight, convenience in installation and low investment cost, is a problem which needs to be solved urgently for reducing the heat loss and the raise dust of the iron mixing vehicle at present.
Disclosure of Invention
The invention aims to provide a heat-preservation tank cover for a torpedo type iron mixing vehicle, which can effectively reduce the heat loss of the iron mixing vehicle and reduce the raised dust by arranging a multi-layer steel plate structure in a shell, reserving air gaps among the multi-layer steel plates and laying a heat-insulating fireproof layer at the bottom of the tank cover.
The invention is realized by the following steps:
a heat-insulating tank cover for a torpedo type torpedo hot metal mixer car comprises a first outer steel shell, wherein lifting lugs and reinforcing ribs are symmetrically and fixedly arranged on the top surface of the first outer steel shell, and a groove with a downward opening is formed in the bottom surface of the first outer steel shell;
the first outer steel shell also comprises an inner steel plate, a spacer, an inner steel shell and a heat-insulating fire-resistant layer; the inner steel plates and the inner steel shells are both plate-shaped and matched with the grooves, and the inner steel plates and the inner steel shells are fixedly connected to the inner side walls of the grooves from top to bottom in sequence and are arranged in parallel with the bottom surfaces of the grooves; the heat-insulating refractory layer is paved and fixedly arranged on the bottom surface of the inner steel shell; a plurality of isolating pieces are arranged on the lower side of the inner steel plate; the top surface of the first outer steel shell is provided with a plurality of rain-proof air holes, and the inner steel plate, the inner steel shell and the heat-insulating fireproof layer are all provided with a plurality of air holes.
The first outer steel shell is in a circular cover shape and is matched with a tank opening of the iron mixing vehicle, and a circle of convex edge is arranged on the periphery of the top surface of the first outer steel shell and is used for being matched with the tank opening of the iron mixing vehicle and bearing the weight of a tank cover; the groove is of a circular structure; the inner steel plate and the inner steel shell are both circular plate-shaped.
The lower side of the inner steel plate is provided with a spacer at the axis, and at least two pairs of spacers are arranged in axial symmetry, so that the weight of each inner steel plate can be uniformly distributed on all the spacers at the lower side of the inner steel plate, and the spacers at the non-axis positions of the adjacent inner steel plates are distributed in a vertically staggered manner.
The tank cover also comprises a second outer steel shell, the first outer steel shell and the second outer steel shell are both arc-shaped shells which are close to semicircles, and the first outer steel shell and the second outer steel shell are spliced to form a circular cover shape and can be matched with a tank opening of the iron mixing car; the top surface structure and the internal structure of the second outer steel shell are the same as those of the first outer steel shell, and the second outer steel shell comprises lifting lugs, reinforcing ribs, rain-proof air holes, inner steel plates, isolating pieces, inner steel shells, heat-insulating fire-resistant layers and air holes.
The first outer steel shell is provided with a convex edge along the arc chord part at the lower part of the side wall at the splicing part and a first step upwards at the edge of the convex edge, the second outer steel shell is provided with a convex edge along the arc chord part at the upper part of the side wall at the splicing part and a second step downwards at the edge of the convex edge, and the first step and the second step can be matched and clamped; and the first outer steel shell or the second outer steel shell is fixedly provided with a refractory fiber felt at the splicing position.
At least one pair of isolating pieces are symmetrically arranged on the lower side of each inner steel plate, the weight of each inner steel plate can be uniformly distributed on all the isolating pieces on the lower side of each inner steel plate, and the isolating pieces of the upper and lower adjacent inner steel plates are distributed in a vertically staggered mode.
And the arc parts of the edges of the grooves of the first outer steel shell and the second outer steel shell are fixedly provided with a plurality of bearing pieces which are used for contacting with a tank opening of the iron mixing car and bearing the weight of the tank cover.
The heat-insulating fire-resistant layer is fixed on the inner steel shell through a metal framework, and the metal framework is a plurality of symmetrically arranged riveting pieces, or a net structure consisting of a plurality of thin steel bars, or an umbrella rib structure consisting of a plurality of thin steel bars.
The rain-proof air hole of the first outer steel shell, the air hole of the inner steel plate and the air hole of the inner steel shell are distributed in a vertically staggered mode, and the air hole of the inner steel shell is aligned to the air hole of the heat-insulating fire-resistant layer.
The quantity of interior steel sheet is three at least, and the thickness of steel sheet is no longer than 5mm in every, and the interval of the interior steel sheet of the superiors and the recess bottom surface of first outer steel shell, the interval of two adjacent interior steel sheets, the interval of the interior steel sheet of the lower floor and interior steel shell are all not more than 20 mm.
The heat-insulation tank cover for the torpedo type mixed iron car is provided with the multi-layer steel plate structure in the tank cover shell, air gaps are formed among the multi-layer steel plates through the plurality of isolating pieces, other fillers are not filled in the multi-layer steel plates, and a good heat-insulation effect of the tank cover can be realized by utilizing the characteristic of low air heat conductivity coefficient; simultaneously, arrange the thermal-insulated flame retardant coating of one deck in cover bottom, can reduce the thermal shock of high temperature molten iron to the steel construction of cover, effectively prolonged the life of cover. In addition, a plurality of air holes are formed in the outer steel shell, the inner steel plate, the inner steel shell and the heat-insulating fire-resistant layer of the tank cover, so that the pressure difference between the outer air in the tank body and the outer air in the iron mixing tank can be balanced, and the problem that the tank cover is difficult to open and close can be avoided. The invention has simple structure and light weight, and particularly, the splicing structure of the two approximately semicircular outer steel shells not only has convenient installation and use, but also ensures the heat insulation and preservation effects.
Compared with the prior art, the invention has the following beneficial effects: the structure is succinct, easily processing, and weight is lighter, installation convenient to use, can effectively reduce the hot loss of torpedo hot metal mixer car, can prevent again that the smoke and dust from directly discharging into the atmosphere, accords with energy-concerving and environment-protective user's demand.
Drawings
FIG. 1 is a schematic perspective view (embodiment one) of a thermal insulation can lid for a torpedo type torpedo hot metal mixer car according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the present invention (embodiment one);
FIG. 3 is a schematic view of the distribution of the spacers of the present invention on the inner steel plate (embodiment one);
FIG. 4 is a schematic view of the internal structure of a can lid according to the present invention (embodiment two);
FIG. 5 is a schematic structural view of a metal skeleton according to the present invention (example II);
FIG. 6 is a schematic structural diagram of the first and second outer steel shells after being spliced according to the present invention (example III);
FIG. 7 is a schematic view of the internal structure of a can lid in accordance with the present invention (example III);
FIG. 8 is a schematic view of the internal structure of a can lid according to the present invention (example four).
In the figure, 1 a first outer steel shell, 11 lifting lugs, 13 reinforcing ribs, 14 refractory fiber felts, 16 a first step, 17 a rainproof air hole, 2 an inner steel plate, 21 a spacer, 22 an air hole, 3 an inner steel shell, 4 a heat-insulating fire-resistant layer, 41 a riveting piece, 42 thin steel bars, 43 air holes, 5 a second outer steel shell and 51 a second step.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Example one
Referring to fig. 1-3, a heat preservation cover for torpedo type torpedo hot metal mixer car, including first outer box hat 1, first outer box hat 1 is circular lid form and cooperatees with the jar mouth of torpedo hot metal mixer car, and first outer box hat 1 sets up the round chimb in the top surface periphery, and circumference sets up the annular arch of recess and torpedo hot metal mixer car jar mouth and cooperatees on the chimb for the cover contacts and agrees with the torpedo hot metal mixer car jar mouth, can bear the weight of cover, can restrain gas flow again, reduce the heat dissipation. Lifting lugs 11, reinforcing ribs 13 and rain-proof air holes 17 are fixedly arranged on the top surface of the first outer steel shell 1. The lifting lugs 11 are in an inverted U shape and used for lifting or moving the tank cover, and the pair of lifting lugs 11 are symmetrically arranged by taking the shaft as a center. The four reinforcing ribs 13 are symmetrically arranged on the top surface of the first outer steel shell 1 in a criss-cross manner. The number of the rain-proof air holes 17 is four, and the rain-proof air holes can be in a round table shape or umbrella-shaped steel caps are arranged above the air holes, so that rainwater is prevented from entering the iron mixing vehicle in rainy days.
Referring to fig. 2, a circular groove with a downward opening is formed in the bottom surface of the first outer steel shell 1, and the first outer steel shell 1 further comprises an inner steel plate 2, a spacer 21, an inner steel shell 3 and a heat-insulating fire-resistant layer 4. Interior steel sheet 2 and interior box hat 3 are circular platelike and cooperate with circular recess, and four interior steel sheet 2 and interior box hat 3 are in proper order from last to down fixed welding on circular recess inside wall and with circular recess bottom surface parallel arrangement. One spacer 21 is disposed at the axial center of the lower side of each inner steel plate 2, and four pairs of spacers 21 are disposed axially symmetrically, see fig. 3, so that the weight of each inner steel plate 2 can be uniformly distributed on all the spacers 21 at the lower side thereof, and the spacers 21 at the non-axial center of the adjacent inner steel plates 2 are disposed in a vertically staggered manner. The thickness of steel sheet 2 is 1mm in every, the interval of the recess bottom surface of the interior steel sheet 2 of the superiors and first outer steel shell 1, the interval of steel sheet 2 in two adjacent, the interval of interior steel sheet 2 of lower floor and interior steel shell 3 is 12mm, by air packing in the interval, air heat conduction coefficient is low, and the interval of interior steel sheet is less, the air is difficult to take place to flow, inside heat transfer is mainly with the heat conduction, convection heat transfer is few, make thermal-insulated effect show the promotion.
Referring to fig. 2, the heat-insulating refractory layer 4 is laid and fixedly disposed on the bottom surface of the inner steel shell 3 through a metal framework, the metal framework is a plurality of axially symmetrical riveting pieces 41, and the riveting pieces 41 are Y-shaped riveting pieces or T-shaped riveting pieces. The material of the heat-insulating fire-resistant layer 4 can be aluminum silicate, fire-resistant cement, fiber blocks or multi-layer fire-resistant heat-insulating material.
Four air holes are arranged on the inner steel plate 2, the inner steel shell 3 and the heat-insulating fire-resistant layer 4, and the air holes 43 in the heat-insulating fire-resistant layer 4 can be referred to as air holes 43 in fig. 5 of the second embodiment. The rain-proof air hole 17 on the first outer steel shell 1, the air hole 22 on the inner steel plate 2 and the air hole on the inner steel shell 3 are distributed in a vertically staggered manner, and the air holes on the inner steel shell 3 are aligned with the air holes on the heat-insulating fire-resistant layer 4 one by one.
The use method of the invention comprises the following steps: the lifting device is connected with the lifting lugs 11 on the first outer steel shell 1 of the tank cover, and the opening and closing process of the tank cover of the torpedo type iron mixing vehicle can be completed by lifting.
Example two
Referring to fig. 1, 3 to 5, a thermal insulation tank cover for a torpedo type hot metal mixer car is different from the first embodiment in that a metal framework is a mesh structure (see fig. 5) formed by a plurality of thin steel bars 42 in a criss-cross manner or an umbrella rib structure formed by a plurality of thin steel bars.
EXAMPLE III
Referring to fig. 6 and 7, the thermal insulation tank cover for the torpedo type torpedo hot metal mixer car comprises a first outer steel shell 1 and a second outer steel shell 5, wherein the first outer steel shell 1 and the second outer steel shell 5 are both approximately semicircular arched shells, and the first outer steel shell and the second outer steel shell are spliced to form a circular cover shape and can be matched with a tank opening of the torpedo hot metal mixer car. The top surface of the first outer steel shell 1 is provided with a lifting lug 11, a reinforcing rib 13 and a rainproof air hole 17. The lifting lugs 11 are inverted U-shaped, and a pair of lifting lugs 11 are symmetrically arranged and used for lifting or moving the first outer steel shell 1. The reinforcing ribs 13 are arranged on the top surface of the first outer steel shell 1 in a criss-cross and symmetrical manner. The number of the rain-proof air holes 17 is two, and the rain-proof air holes can be in a round platform shape or umbrella-shaped steel caps are arranged above the air holes, so that rainwater is prevented from entering the iron mixing vehicle in rainy days. The top surface of the second outer steel shell 5 is provided with a lifting lug, a reinforcing rib and a rainproof air hole, and the structures and the sizes of the lifting lug, the reinforcing rib and the rainproof air hole are the same as those of the lifting lug 11, the reinforcing rib 1 and the rainproof air hole 17 on the first outer steel shell 1.
Referring to fig. 7, an arch-shaped groove with a downward opening is formed in the bottom surface of the first outer steel shell 1, and the first outer steel shell 1 further comprises an inner steel plate 2, a spacer 21, an inner steel shell 3 and a heat-insulating fire-resistant layer 4. Interior steel sheet 2 and interior steel casing 3 are bow-shaped platelike and cooperate with bow-shaped recess, and four interior steel sheet 2 and interior steel casing 3 are from last to down fixed welding in proper order on bow-shaped recess inside wall and with bow-shaped recess bottom surface parallel arrangement. At least one pair of spacers 21 are symmetrically arranged on the lower side of each inner steel plate 2, the weight of each inner steel plate 2 can be uniformly distributed on all the spacers 21 on the lower side, and the spacers 21 of the upper and lower adjacent inner steel plates 2 are vertically staggered. The thickness of steel sheet 2 is 1mm in every, the interval of the recess bottom surface of the interior steel sheet 2 of the superiors and first outer steel shell 1, the interval of steel sheet 2 in two adjacent, the interval of interior steel sheet 2 of lower floor and interior steel shell 3 is 12mm, by air packing in the interval, air heat conduction coefficient is low, and the interval of interior steel sheet is less, the air is difficult to take place to flow, inside heat transfer is mainly with the heat conduction, convection heat transfer is few, make thermal-insulated effect show the promotion. All set up a plurality of gas pockets on interior steel sheet 2, interior steel casing 3, the thermal-insulated flame retardant coating 4, rain-proof gas pocket 17 on the first outer steel casing 1, the gas pocket on interior steel sheet 2 and the gas pocket dislocation distribution from top to bottom on the interior steel casing 3, the gas pocket on the interior steel casing 3 aims at the gas pocket on the thermal-insulated flame retardant coating 4. The heat-insulating fire-resistant layer 4 is laid and fixedly arranged on the bottom surface of the inner steel shell 3 through a metal framework, the metal framework is a plurality of symmetrically arranged riveting pieces 41, and the riveting pieces 41 are Y-shaped riveting pieces or T-shaped riveting pieces. The material of the heat-insulating fire-resistant layer 4 can be aluminum silicate, fire-resistant cement, fiber blocks or multi-layer fire-resistant heat-insulating material. The internal structure of the second outer steel shell 5 is the same as that of the first outer steel shell 1, and comprises an inner steel plate, a spacer, an inner steel shell, a heat-insulating fire-resistant layer and an air hole.
The convex edge is arranged at the lower part of the side wall of the splicing position of the first outer steel shell 1 along the arc chord part, the first step 16 is arranged upwards at the edge of the convex edge, the convex edge is arranged at the upper part of the side wall of the splicing position of the second outer steel shell 5 along the arc chord part, the second step 51 is arranged downwards at the edge of the convex edge, the first step 16 and the second step 51 can be clamped in a matched mode, and the whole tank cover can be prevented from sliding under the action of no external force. And a refractory fiber felt 14 is fixedly arranged at the splicing position of the first outer steel shell 1 or the second outer steel shell 5.
In addition, a plurality of bearing pieces (not shown in the figure) are uniformly and fixedly arranged on the lower edge of the circular tank cover formed by splicing the first outer steel shell 1 and the second outer steel shell 5 in the circumferential direction, and at least three bearing pieces are respectively arranged on the first outer steel shell 1 and the second outer steel shell 5 and are used for contacting with a tank opening of a metal mixer and bearing the weight of the tank cover.
The use method of the invention comprises the following steps: when the tank opening of the iron mixing vehicle needs to be closed, the lifting device is firstly connected with the lifting lug on the first outer steel shell, the first outer steel shell is arranged at the tank opening, and then the lifting device is connected with the lifting lug on the second outer steel shell, the second outer steel shell is arranged at the tank opening and is spliced with the first outer steel shell, and the tank opening can be closed; when the tank opening of the iron mixing vehicle needs to be opened, the lifting device is connected with the lifting lug on the second outer steel shell, the second outer steel shell is lifted to leave the tank opening and is placed well, then the lifting device is connected with the lifting lug on the first outer steel shell, the first outer steel shell is lifted to leave the tank opening and is placed well, and the opening of the tank opening can be completed.
Example four
Referring to fig. 6 and 8, a torpedo type heat preservation tank cover for a torpedo type hot metal mixer car is different from the third embodiment in that an arched groove is formed in an inner steel plate 3, a heat insulation fire-resistant layer 4 is arranged in the groove, the heat insulation fire-resistant layer 4 is fixed at the bottom of the arched groove of the inner steel plate 3 through a metal framework, and the metal framework is a net structure formed by a plurality of thin steel bars 42 in a criss-cross mode or an umbrella-shaped structure formed by a plurality of thin steel bars. The edge of the groove of the inner steel plate 3 can also be used as a bearing piece which is used for contacting and matching with the mouth of the iron mixing car and bearing the weight of the pot cover.
According to the heat-preservation tank cover for the torpedo type mixed iron car, the plurality of layers of steel plates are arranged in the shell, and air gaps are reserved among the plurality of layers of steel plates, so that a good heat-preservation and heat-insulation effect can be ensured. The heat-insulating refractory layer is fixedly laid at the bottom of the tank cover, so that the service life is longer, and the heat-insulating effect is favorably enhanced. In addition, the air holes which are staggered up and down are arranged in the multilayer structure, so that heat loss can be reduced, and the pressure difference between the inside and the outside of the tank can be avoided. The cover-adding and cover-taking device is simple in structure and light in weight, and the cover-adding and cover-taking operations of the torpedo type iron mixing car are more convenient.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A heat-insulation tank cover for a torpedo type mixed iron car comprises a first outer steel shell (1), wherein lifting lugs (11) and reinforcing ribs (13) are symmetrically and fixedly arranged on the top surface of the first outer steel shell (1), and a groove with a downward opening is formed in the bottom surface of the first outer steel shell (1); the method is characterized in that:
the first outer steel shell (1) further comprises an inner steel plate (2), a spacer (21), an inner steel shell (3) and a heat-insulating fire-resistant layer (4); the inner steel plates (2) and the inner steel shells (3) are both plate-shaped and matched with the grooves, and the inner steel plates (2) and the inner steel shells (3) are fixedly connected to the inner side walls of the grooves from top to bottom in sequence and are arranged in parallel with the bottom surfaces of the grooves; the heat-insulating fireproof layer (4) is paved and fixedly arranged on the bottom surface of the inner steel shell (3); a plurality of isolating pieces (21) are arranged on the lower side of the inner steel plate (2); the top surface of first outer steel casing (1) sets up a plurality of rain-proof gas pockets (17), all set up a plurality of gas pockets on interior steel sheet (2), interior steel casing (3), thermal-insulated flame retardant coating (4).
2. The thermal insulation tank cover for the torpedo type hot metal mixer car according to claim 1, which is characterized in that: the first outer steel shell (1) is in a circular cover shape and is matched with a tank opening of a torpedo car, and a circle of convex edge is arranged on the periphery of the top surface of the first outer steel shell (1) and is used for being matched with the tank opening of the torpedo car and bearing the weight of a tank cover; the groove is of a circular structure; the inner steel plate (2) and the inner steel shell (3) are both circular plate-shaped.
3. The thermal insulation tank cover for the torpedo type hot metal mixer car according to claim 2, characterized in that: the axial center of the lower side of each inner steel plate (2) is provided with one isolating piece (21), and at least two pairs of isolating pieces (21) are arranged in an axial symmetry mode, so that the weight of each inner steel plate (2) can be uniformly distributed on all the isolating pieces (21) on the lower side of the inner steel plate, and the isolating pieces (21) on the non-axial center of the adjacent inner steel plates (2) are distributed in a vertically staggered mode.
4. The thermal insulation tank cover for the torpedo type hot metal mixer car according to claim 1, which is characterized in that: the tank cover further comprises a second outer steel shell (5), the first outer steel shell (1) and the second outer steel shell (5) are both arc-shaped shells which are close to semicircles, and the first outer steel shell and the second outer steel shell are spliced to form a circular cover shape and can be matched with a tank opening of a torpedo car; the top surface structure and the internal structure of the second outer steel shell (5) are the same as those of the first outer steel shell (1), and the structure comprises lifting lugs, reinforcing ribs, rain-proof air holes, inner steel plates, isolating pieces, inner steel shells, heat-insulating fire-resistant layers and air holes.
5. The thermal insulation tank cover for the torpedo type hot metal mixer car according to claim 4, characterized in that: the first outer steel shell (1) is provided with a convex edge along an arched chord part at the lower part of the side wall at the splicing part and a first step (16) upwards at the edge of the convex edge, the second outer steel shell (5) is provided with a convex edge along an arched chord part at the upper part of the side wall at the splicing part and a second step (51) downwards at the edge of the convex edge, and the first step (16) and the second step (51) can be matched and clamped; and a refractory fiber felt (14) is fixedly arranged at the splicing position of the first outer steel shell (1) or the second outer steel shell (5).
6. The thermal insulation tank cover for the torpedo type hot metal mixer car according to claim 4, characterized in that: at least one pair of spacers (21) are symmetrically arranged on the lower side of the inner steel plate (2), the weight of each inner steel plate (2) can be uniformly distributed on all the spacers (21) on the lower side of the inner steel plate, and the spacers (21) of the upper and lower adjacent inner steel plates (2) are vertically staggered.
7. The thermal insulation tank cover for the torpedo type hot metal mixer car according to claim 4, characterized in that: and the arc parts of the edges of the grooves of the first outer steel shell (1) and the second outer steel shell (5) are fixedly provided with a plurality of bearing pieces which are used for contacting with a tank opening of the iron mixing car and bearing the weight of a tank cover.
8. The thermal insulation tank cover for a torpedo type hot metal mixer car according to any one of claims 1 to 7, characterized in that: the heat-insulating fire-resistant layer (4) is fixed on the inner steel shell (3) through a metal framework, and the metal framework is a plurality of symmetrically arranged riveting pieces (41), or a net structure consisting of a plurality of thin steel bars (42), or an umbrella rib structure consisting of a plurality of thin steel bars (42).
9. The thermal insulation tank cover for a torpedo type hot metal mixer car according to any one of claims 1 to 7, characterized in that: the rainproof air hole (17) of the first outer steel shell (1), the air hole (22) of the inner steel plate (2) and the air hole of the inner steel shell (3) are distributed in a vertically staggered mode, and the air hole of the inner steel shell (3) is aligned to the air hole (43) of the heat-insulating fire-resistant layer (4).
10. The thermal insulation tank cover for a torpedo type hot metal mixer car according to any one of claims 1 to 7, characterized in that: the quantity of interior steel sheet (2) is three at least, and the thickness of steel sheet (2) is no longer than 5mm in every, and the interval of the interior steel sheet (2) of the superiors and the recess bottom surface of first outer steel shell (1), the interval of two adjacent interior steel sheets (2), the interval of interior steel sheet (2) and interior steel shell (3) of the lower floor all do not exceed 20 mm.
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| CN202010356046.2A CN113560555B (en) | 2020-04-29 | 2020-04-29 | Heat preservation tank cover for torpedo type iron mixing vehicle |
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| CN202010356046.2A CN113560555B (en) | 2020-04-29 | 2020-04-29 | Heat preservation tank cover for torpedo type iron mixing vehicle |
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|---|---|
| CN113560555B (en) | 2024-09-10 |
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