CN201455004U - Pierced billet reheating furnace - Google Patents
Pierced billet reheating furnace Download PDFInfo
- Publication number
- CN201455004U CN201455004U CN2009201107176U CN200920110717U CN201455004U CN 201455004 U CN201455004 U CN 201455004U CN 2009201107176 U CN2009201107176 U CN 2009201107176U CN 200920110717 U CN200920110717 U CN 200920110717U CN 201455004 U CN201455004 U CN 201455004U
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- metal
- furnace
- beams
- furnace shell
- hollow forging
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Abstract
The utility model discloses a pierced billet reheating furnace, which comprises a metallic furnace shell, a hearth, a metallic beam component, a feeding device and a discharging device. A combustion device is arranged on the metallic furnace shell; a composite refractory furnace lining is set in the metallic furnace shell; the hearth is hermetically connected at the bottom of the metallic furnace shell; the metallic beam component is connected on the hearth; the pierced billet is placed on the metallic beam component; the feeding and discharging devices are respectively arranged on two sides of the metallic furnace shell in the length direction, and corresponding to the metallic beam component; and the metallic beam component comprises a metallic beam upright post and a metallic beam supported on the metallic beam upright post, wherein the metallic beam is positioned in the metallic furnace shell, the metallic beam upright post is arranged on the hearth, and the cross section of the metallic beam takes the shape of a box. As the cross section of the metallic beam takes the shape of a box, the reheating furnace can heat the pierced billet with very large pipe diameter and piece weight.
Description
Technical field
The utility model relates to a kind of hollow forging reheating furnace of metallurgical seamless steel tube production industry, particularly about a kind of hollow forging reheating furnace that is suitable for super large caliber, super large substance.
Background technology
The hollow forging reheating furnace generally is used for the hot rolled seamless steel tube workshop, and the hollow forging (700 ℃～800 ℃) that is shut out by pipe mill is through the reheating furnace heating, so that the hollow forging temperature is brought up to about 850 ℃～950 ℃, and makes the temperature of pipe even; It is rolling and to obtain external diameter accurate, the uniform steel pipe of wall thickness to be sent to sizing mill (stretch-reducing mill or pipe expander) through the hollow forging of reheating furnace heating.
The beams of metal of relevant hollow forging reheating furnace mostly is i-shaped beams greatly, and the pipe substance of its carrying is also less, and the profile height of beams of metal is lower, and therefore relevant hollow forging reheating furnace can only heat the less hollow forging of caliber, and the caliber scope is generally DN80～DN500mm; If reheating furnace need be processed the bigger hollow forging of caliber, because the caliber of hollow forging is big more, the section of I shape beams of metal is just high more, makes that the stability of beam is poor more, makes the cost of beams of metal and whole reheating furnace improve simultaneously, and energy resource consumption increases.
The utility model content
The purpose of this utility model is, a kind of hollow forging reheating furnace is provided, and it can heat the hollow forging of big caliber.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize,
A kind of hollow forging reheating furnace, it comprises: the metal furnace shell, described metal furnace shell is provided with burner; Furnace bottom, described furnace bottom is sealedly attached to the bottom of described metal furnace shell; The beams of metal assembly, described beams of metal assembly is connected on the described furnace bottom, and described hollow forging is placed on the described beams of metal assembly; Charging and discharging device, described charging and discharging device are arranged at described metal furnace shell both sides in the longitudinal direction respectively, and corresponding with described beams of metal assembly; It is characterized in that described beams of metal assembly comprises beams of metal column and the beams of metal that is supported on the beams of metal column, described beams of metal is positioned at described metal furnace shell, and described beams of metal column is arranged on the described furnace bottom, and the cross section of described beams of metal is box.
In preferred embodiment, described beams of metal comprises walking beam and built-in beam, described beams of metal column comprises built-in beam column and walking beam column, described walking beam and built-in beam are fixedly connected on respectively on described walking beam column and the built-in beam column, described built-in beam column is fixedly installed on the described furnace bottom, described walking beam column passes furnace bottom and stays the hole of establishing, and can be connected on the horizontal frame of described furnace bottom below with moving up and down; Described walking beam and built-in beam all are the box setting, and the two is along the width interlaced arrangement of described metal furnace shell; The cross-sectional area of described built-in beam is less than the cross-sectional area of walking beam.
In preferred embodiment, the upper and lower both sides of described walking beam column are respectively arranged with sealing planker and lower seal planker, the described inboard that be connected described furnace bottom, described lower seal planker can be connected to move left and right the outside of described furnace bottom with going up sealing planker energy move left and right.
In preferred embodiment, the top of described metal furnace shell comprises preheating section, bringing-up section and the soaking zone that forms the curve setting successively from the direction that is charged to discharging; The height of described preheating section is less than the height of described bringing-up section and soaking zone; The top of described bringing-up section and soaking zone all is provided with described burner.
In preferred embodiment, described feeding device comprises a plurality of charging overhang rolls and the charging motor that is connected the overhang roll of respectively feeding respectively, and described drawing mechanism comprises a plurality of discharging overhang rolls and the discharging motor that is connected each discharging overhang roll respectively; A plurality of described charging overhang rolls form the charging hanging arm roll, and are arranged in the described metal furnace shell, and arrange along the length direction of metal furnace shell; A plurality of described discharging overhang rolls form the discharging hanging arm roll, and are arranged in the described metal furnace shell, and arrange along the length direction of metal furnace shell; Each dress, all V-shaped setting of discharging overhang roll.
In preferred embodiment, described burner is inferior high combustion rate burner.
In preferred embodiment, described inferior high combustion rate burner comprises the combustion chamber, side in described combustion chamber is provided with air duct, gas-jet tube and spout, one end of described gas-jet tube is inserted in the air duct, described spout comprises gas port and air port, described spout is positioned at described combustion chamber, and also the position near described gas port is provided with ignitor in described combustion chamber.
In preferred embodiment, described combustion chamber is provided with peep hole.
The characteristics and the advantage of the hollow forging reheating furnace that the utility model proposes are: the cross section of its beams of metal is box, make this reheating furnace can heat the hollow forging of super large caliber (maximum diameter is 720mm, wall thickness 60mm), super large substance (every meter substance can reach 1000 kilograms); In addition, also can suitably increase the section width size of beams of metal, increase the bending strength of width, with further raising metal depth of beam and width intensity and stability.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, to do to introduce simply to the accompanying drawing of required use among the embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that the master of hollow forging reheating furnace of the present utility model looks schematic diagram;
Fig. 2 is the top cross-sectional view of hollow forging reheating furnace of the present utility model, and the first half of its center line C is different with the position that the Lower Half branch cuts open, therefore the difference that shows;
Fig. 3 is the part sectioned view of the upper and lower sealing planker of demonstration of the present utility model;
Fig. 4 is the generalized section along the A-A line of Fig. 3;
Fig. 5 is the cross sectional representation of built-in beam of the present utility model;
Fig. 6 is the cross sectional representation of walking beam of the present utility model;
Fig. 7 is that the section master of inferior high combustion rate burner of the present utility model looks schematic diagram;
Fig. 8 is the section schematic top plan view of inferior high combustion rate burner of the present utility model;
Fig. 9 is the schematic side view of inferior high combustion rate burner of the present utility model.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model proposes a kind of hollow forging reheating furnace, as shown in Figure 1, 2, it comprises metal furnace shell 1, furnace bottom 2, beams of metal assembly, feeding device and the drawing mechanism of liner composite refractory furnace lining. wherein, described metal furnace shell 1 is provided with the bottom that burner 3. described furnace bottoms 2 are sealedly attached to metal furnace shell 1, make the metal furnace shell 1 of liner composite refractory furnace lining define a combustion space jointly with furnace bottom 2, hollow forging is heated in the combustion space. and described beams of metal assembly is connected on the furnace bottom 2, and described hollow forging G is placed on the beams of metal assembly; Described beams of metal assembly comprises beams of metal column and the beams of metal that is supported on the beams of metal column, described beams of metal is positioned at metal furnace shell 1, described beams of metal column is arranged on the described furnace bottom 2, the cross section of described beams of metal is box. and described charging and discharging device is arranged at described metal furnace shell 1 both sides in the longitudinal direction respectively, and it is corresponding with described beams of metal assembly. herein " stove is wide " is meant longitudinal direction, and " furnace superintendent " is meant horizontal direction.
The utility model in use, hollow forging G enters in the liner composite refractory furnace lining metal furnace shell 1 (shown in the arrow I of Fig. 2) by feeding device from charging door, and be transported to discharge end from charging end by the beams of metal assembly, hollow forging G is heated in the process from the charging end to the discharge end, to improve the temperature of hollow forging, and make the temperature of Guan Wen even, after hollow forging G arrives discharge end, finally by drawing mechanism discharging from metal furnace shell 1 (the arrow O as Fig. 2 shows), to carry out next step operation.
Wherein, consider the side force of big caliber thick-walled pipe expanded by heating and the stability of maximum section of passenger flow beams of metal, the cross section of beams of metal of the present utility model is box, make this reheating furnace can heat the hollow forging of super large caliber (maximum gauge is 720mm, wall thickness 60mm), super large substance (every meter substance can reach 1000 kilograms); In addition, also can suitably increase the section width size of beams of metal, increase the bending strength of width, with further raising metal depth of beam and width intensity and stability.
In preferred implementation, the top of described metal furnace shell 1 comprises preheating section 11, bringing-up section 12 and the soaking zone 13 that forms the curve setting successively from the direction (promptly along the furnace superintendent direction) that is charged to discharging; The height of described preheating section 11 can be less than the height of bringing-up section 12 and soaking zone 13, to prevent that being subjected to powerful hot-fluid suddenly into the stove steel pipe impacts the generation distortion; The top of described bringing-up section 12 and soaking zone 13 all is provided with described burner, makes the heat transfer efficiency height, uniformity of temperature profile.In the present embodiment, its bringing-up section 12 and soaking zone 13 are divided into three temperature control sections respectively along the stove cross direction, with the temperature homogeneity of further assurance stokehold hollow forging length direction.
Wherein, the furnace roof of metal furnace shell 1 and top furnace wall can adopt light-duty heat resistance fiber modular structure, and bottom furnace wall and furnace bottom can adopt the composite construction of unlike material, and this vertebration property is strong, and heat-insulating property is good.So can guarantee the heat resistant furnace long-term stable operation, when improving the operating environment temperature in heating furnace zone, make the furnace wall surface temperature be better than national standard.
Described feeding device comprises a plurality of charging overhang rolls 51 and the charging motor 52 that is connected the overhang roll 51 of respectively feeding respectively, described drawing mechanism comprises a plurality of discharging overhang rolls 53 and the discharging motor 54 that is connected each discharging overhang roll 53 respectively, each motor 52 of feeding drives charging overhang roll 51 respectively and rotates, and each discharging motor 54 drives discharging overhang roll 53 respectively and rotates; A plurality of charging overhang rolls 51 form the charging hanging arm roll, and are arranged in the described metal furnace shell 1, and arrange along the width of metal furnace shell 1; A plurality of discharging overhang rolls 53 form the discharging hanging arm roll, and are arranged in the metal furnace shell 1, and arrange along the width of metal furnace shell 1; Each dress, all V-shaped setting of discharging overhang roll 51,53 rollers.In the present embodiment, the bearing capacity super large of hanging arm roll again owing to the setting of its V-type roller, so can carry the hollow forging of super large caliber, super large substance, again can be high temperature resistant.When the needs when filling with substance, charging motor 52 starts, and drives charging overhang roll 51 and rotates, and hollow forging G then progresses in the metal furnace shell 1 by the rotation of charging overhang roll 51; Equally, when the needs discharging, discharging motor 54 starts, and drives discharging overhang roll 53 and rotates, and heated hollow forging G then leaves metal furnace shell 1 by discharging overhang roll 53.
In concrete embodiment, described beams of metal comprises walking beam 41 and built-in beam 42, and described walking beam 41 and built-in beam 42 all are the box setting, and the two is along the length direction interlaced arrangement of metal furnace shell 1; The cross-sectional area of described built-in beam 42 is less than the cross-sectional area of walking beam 41; Described beams of metal column comprises walking beam column 43 and built-in beam column 44, and described walking beam 41 and built-in beam 42 are fixedly connected on respectively on described walking beam column 43 and the built-in beam column 44; Described built-in beam column 44 is fixedly installed on the furnace bottom 2; Described walking beam column 43 passes the hole of furnace bottom 2, and can be connected on the horizontal frame 21 of furnace bottom 2 belows with moving up and down. furthermore, be equipped with a plurality of recesses 45 on each walking beam 41 and the built-in beam 42, each walking beam 41 and built-in beam 42 are corresponding at the same recess that lists 45, and the recess 45 of each row can be used for placing a hollow forging G.
The process of beams of metal component transfer hollow forging is as follows: because each walking beam 41 carries the end of hollow forging G corresponding near an end of feeding device with feeding device, when hollow forging G entered in the metal furnace shell 1 by feeding device after, each walking beam 41 was positioned at the bottom of hollow forging G just near an end of feeding device; Then, each walking beam 41 moves upward, and then hollow forging G can be held up, that is, at this moment, hollow forging G leaves feeding device, and is positioned on each walking beam 41; Follow, each walking beam 41 is asking hollow forging G to move a tooth pitch to discharging direction (left) again, and each walking beam 41 descends afterwards, hollow forging G is moved to the next column recess 45 of built-in beam 42; Follow again, each walking beam 41 retreats (to feedstock direction) and returns original position.Repeat the conveying action of above-mentioned hollow forging G, then hollow forging G can be transported to discharge end from feed end step by step, and finally drop on the drawing mechanism.
In addition, because built-in beam column 44 is not subjected to the influence of step pitch, therefore present embodiment has increased the quantity of built-in beam column 44, to shorten the distance between the built-in beam column 44, built-in beam also can adopt the mode of cantilever beam to support, thereby walking beam 41 and built-in beam 42 desirable different sections, the basal area of built-in beam 42 is dwindled greatly, reduce the weight of high material beams of metal, played the effect of saving investment, as shown in Figure 5 and Figure 6.
In preferred implementation, shown in Fig. 3,4, the upper and lower both sides of described walking beam column 43 are respectively arranged with sealing planker 46 and lower seal planker 47, last sealing planker 46 can be connected to move left and right the inboard of furnace bottom 2, and lower seal planker 47 can be connected to move left and right the outside of furnace bottom 2.In other words, each walking beam column 43 passes furnace bottom 2 and stays the hole of establishing, on the walking beam column, and upper and lower sealing planker 46,47 is set respectively, wherein in the position, medial and lateral of furnace bottom 2, last sealing planker 46 can be made by heat resisting cast steel, lower seal planker 47 can water material feeding with refractory heat-insulating by the stainless-steel sheet lining and make, and this practical way adopts in the stove, the outer double-deck planker sealing of stove, and is excessive to reduce furnace gas, both reduce thermal loss, improved the furnace bottom environment temperature again.
Above-mentioned burner can be inferior high combustion rate burner, also can be other existing burner.
As Fig. 7-shown in Figure 9, described inferior high combustion rate burner comprises combustion chamber 31, side in described combustion chamber 31 is provided with air duct 32, gas-jet tube 33 and spout 34, one end of described gas-jet tube 33 is inserted in the air duct 32, shower nozzle 34 comprises gas port 341 and air port 342, spout 34 is positioned at described combustion chamber 31, and also the position near described gas port 341 is provided with ignitor 35 in described combustion chamber 31.
Wherein, combustion chamber 31 is provided with peep hole 36, with the convenient combustion case of observing in the combustion chamber 31, can improve its security reliability; Also be provided with pressure obtaning device 37 on the gas-jet tube 33, can learn by pressure obtaning device 37 whether the pressure in the gas-jet tube 33 are within the normal working range,, can carry out pressure regulation and handle if record the hypertonia in the gas-jet tube 33 or cross when low.
In use, air A enters combustion chamber 31 by air duct 32, coal gas M enters combustion chamber 31 by gas-jet tube 33, air A and coal gas M mix in combustion chamber 31, and light by ignitor 35 in good time, then 31 outlet 38 ejections from the combustion chamber of burned flame then enter the combustion space of reheating furnace, thereby evenly heat hollow forging.
Inferior high combustion rate burner among the utility model embodiment, it can be suitable for natural gas and two types of burnings of mixed gas (calorific value 2000kcal/Nm3); And it carries combustion chamber 31 and ignitor 35, and combustion chamber 31 also is provided with peep hole 36, therefore can improve the service life and the security reliability of burner.
In addition, gas port 341 on the inferior high combustion rate burner and air port 342 all are provided with the two-stage spout respectively, that is to say, inferior high combustion rate burner adopts grading combustion technology to reduce NOx content in the flue gas.
The above only is several embodiment of the present utility model, and those skilled in the art can carry out various changes, modification or combination to the utility model embodiment according to application documents are disclosed, and does not break away from spirit and scope of the present utility model.
Claims (8)
1. hollow forging reheating furnace, it comprises:
The metal furnace shell, described metal furnace shell is provided with burner;
Furnace bottom, described furnace bottom is sealedly attached to the bottom of described metal furnace shell;
The beams of metal assembly, described beams of metal assembly is connected on the described furnace bottom, and described hollow forging is placed on the described beams of metal assembly;
Charging and discharging device, described charging and discharging device are arranged at described metal furnace shell both sides in the longitudinal direction respectively, and corresponding with described beams of metal assembly;
It is characterized in that described beams of metal assembly comprises beams of metal column and the beams of metal that is supported on the beams of metal column, described beams of metal is positioned at described metal furnace shell, and described beams of metal column is arranged on the described furnace bottom, and the cross section of described beams of metal is box.
2. hollow forging reheating furnace according to claim 1, it is characterized in that, described beams of metal comprises walking beam and built-in beam, described beams of metal column comprises built-in beam column and walking beam column, described walking beam and built-in beam are fixedly connected on respectively on described walking beam column and the built-in beam column, described built-in beam column is fixedly installed on the described furnace bottom, and described walking beam column passes furnace bottom and stays the hole of establishing, and can be connected on the horizontal frame of described furnace bottom below with moving up and down;
Described walking beam and built-in beam all are the box setting, and the two is along the width interlaced arrangement of described metal furnace shell; The cross-sectional area of described built-in beam is less than the cross-sectional area of walking beam.
3. hollow forging reheating furnace according to claim 2, it is characterized in that, the upper and lower both sides of described walking beam column are respectively arranged with sealing planker and lower seal planker, the described inboard that be connected described furnace bottom, described lower seal planker can be connected to move left and right the outside of described furnace bottom with going up sealing planker energy move left and right.
4. hollow forging reheating furnace according to claim 1 is characterized in that, the top of described metal furnace shell comprises preheating section, bringing-up section and the soaking zone that forms the curve setting successively from the direction that is charged to discharging; The height of described preheating section is less than the height of described bringing-up section and soaking zone; The top of described bringing-up section and soaking zone all is provided with described burner.
5. hollow forging reheating furnace according to claim 1, it is characterized in that, described feeding device comprises a plurality of charging overhang rolls and the charging motor that is connected the overhang roll of respectively feeding respectively, and described drawing mechanism comprises a plurality of discharging overhang rolls and the discharging motor that is connected each discharging overhang roll respectively; A plurality of described charging overhang rolls form the charging hanging arm roll, and are arranged in the described metal furnace shell, and arrange along the width of metal furnace shell; A plurality of described discharging overhang rolls form the discharging hanging arm roll, and are arranged in the described metal furnace shell, and arrange along the width of metal furnace shell; Each dress, all V-shaped setting of discharging overhang roll.
6. according to each described hollow forging reheating furnace of claim 1-5, it is characterized in that described burner is inferior high combustion rate burner.
7. hollow forging reheating furnace according to claim 6, it is characterized in that, described inferior high combustion rate burner comprises the combustion chamber, side in described combustion chamber is provided with air duct, gas-jet tube and spout, one end of described gas-jet tube is inserted in the air duct, described spout comprises gas port and air port, and described spout is positioned at described combustion chamber, and also the position near described gas port is provided with ignitor in described combustion chamber.
8. hollow forging reheating furnace according to claim 7 is characterized in that described combustion chamber is provided with peep hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201107176U CN201455004U (en) | 2009-08-04 | 2009-08-04 | Pierced billet reheating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201107176U CN201455004U (en) | 2009-08-04 | 2009-08-04 | Pierced billet reheating furnace |
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| Publication Number | Publication Date |
|---|---|
| CN201455004U true CN201455004U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201107176U Expired - Lifetime CN201455004U (en) | 2009-08-04 | 2009-08-04 | Pierced billet reheating furnace |
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| CN (1) | CN201455004U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372145A (en) * | 2014-11-19 | 2015-02-25 | 江阴东邦钢球机械有限公司 | Control structure of heating chamber of steel ball reheating furnace |
| CN105855300A (en) * | 2016-05-19 | 2016-08-17 | 鑫鹏源智能装备集团有限公司 | Heat preservation tunnel and heat preservation control method |
| CN106001129A (en) * | 2016-05-19 | 2016-10-12 | 鑫鹏源智能装备集团有限公司 | Heat preservation tunnel of continuous delivery hot pipe and heat preservation control method |
| CN110541066A (en) * | 2019-09-27 | 2019-12-06 | 烟台鲁宝钢管有限责任公司 | walking beam formula steel pipe heat treatment furnace stove bottom seal structure |
-
2009
- 2009-08-04 CN CN2009201107176U patent/CN201455004U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372145A (en) * | 2014-11-19 | 2015-02-25 | 江阴东邦钢球机械有限公司 | Control structure of heating chamber of steel ball reheating furnace |
| CN105855300A (en) * | 2016-05-19 | 2016-08-17 | 鑫鹏源智能装备集团有限公司 | Heat preservation tunnel and heat preservation control method |
| CN106001129A (en) * | 2016-05-19 | 2016-10-12 | 鑫鹏源智能装备集团有限公司 | Heat preservation tunnel of continuous delivery hot pipe and heat preservation control method |
| CN110541066A (en) * | 2019-09-27 | 2019-12-06 | 烟台鲁宝钢管有限责任公司 | walking beam formula steel pipe heat treatment furnace stove bottom seal structure |
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Granted publication date: 20100512 |
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| CX01 | Expiry of patent term |