CN114214490A - Controllable atmosphere strong convection circulation bell-type furnace platform of many piles of materials - Google Patents
Controllable atmosphere strong convection circulation bell-type furnace platform of many piles of materials Download PDFInfo
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- CN114214490A CN114214490A CN202111558987.5A CN202111558987A CN114214490A CN 114214490 A CN114214490 A CN 114214490A CN 202111558987 A CN202111558987 A CN 202111558987A CN 114214490 A CN114214490 A CN 114214490A
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- circulating fan
- diffuser
- furnace platform
- type furnace
- strong convection
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a convection circulation bell-type furnace platform, in particular to a controllable atmosphere strong convection circulation bell-type furnace platform with multiple stacks of charging materials. The heat-insulating layer and the supporting device are connected at the periphery of the supporting device through a steel lining plate and refractory ceramic fibers, the impeller of the circulating fan and the motor of the circulating fan are fixed at the central position of the base of the furnace platform in an installation mode, the bottom of the diffuser is of a flat plate structure, the diffuser is installed on the supporting device in a passing mode, and the diffuser is arranged at the periphery of the impeller of the circulating fan. The invention improves the temperature uniformity in the furnace, improves the heat transfer efficiency, prolongs the service life of equipment and reduces the energy consumption.
Description
Technical Field
The invention relates to a convection circulation bell-type furnace platform, in particular to a controllable atmosphere strong convection circulation bell-type furnace platform with multiple stacks of charging materials.
Background
Products such as metal coils, coil pipes or special-shaped parts are greatly deformed after an upstream pressure processing procedure, the internal metallographic structure is changed, indexes such as yield strength, tensile strength and elongation after fracture are changed, and downstream processing procedures cannot be directly carried out. Therefore, it is necessary to subject the above-mentioned articles to a suitable heat treatment to cause the recovery recrystallization of the crystal grains, thereby improving the relevant mechanical properties; meanwhile, controllable protective atmosphere is introduced in the heat treatment process, the circulation effect of the metal product is improved as much as possible, the heat transfer efficiency is improved, the performance uniformity and the surface smoothness of the metal product are improved, and the energy consumption is reduced.
The bell-type furnace platform for realizing the heat treatment process structurally realizes the efficient flowing structure of the controllable atmosphere in the closed heat treatment space and has enough mechanical strength as a bearing device of a workpiece in the heat treatment process. The traditional cover type furnace platform for the workpiece has the following defects and needs to be improved: the structure of the furnace platform is unreasonable, the accurate realization of the heat treatment process is influenced, and workpieces with larger weight are difficult to bear; the diffuser is not matched with the impeller, and the guide blades are unreasonably arranged, so that the gas flow loss is increased, and the unfavorable phenomena of rotation separation, even backflow and the like are easy to occur; the current collector and the diffuser are not sealed enough, so that the phenomenon of short circuit of airflow is easy to occur, and the airflow distribution is influenced; the rotating speed of the furnace circulating fan is low, and the gas circulation times are insufficient.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a controllable atmosphere strong convection circulation bell-type furnace platform for multi-stack charging
The technical scheme of the invention is as follows: the utility model provides a controllable atmosphere strong convection current circulation bell-type furnace platform of many buttress charges, includes furnace platform base, sealing device, strutting arrangement, thermal-insulated heat preservation, casing, circulating fan impeller, circulating fan motor, diffuser, collector, draft tube, core support, and sealing device installs on furnace platform base, and strutting arrangement includes the heat-resistant steel support column, and strutting arrangement fixes on furnace platform base, and the welding fills thermal-insulated heat preservation, its characterized in that in the casing on furnace platform base: the heat insulation layer and the supporting device are connected and positioned on a steel lining plate and refractory ceramic fibers around the supporting device, a circulating fan impeller and a circulating fan motor are fixed at the central position of a furnace platform base in an installation mode, the bottom of a diffuser is of a flat plate structure, the diffuser is installed on the supporting device in a passing mode, the diffuser is arranged around the circulating fan impeller, arc-shaped long and short blades which rotate in the same direction as the circulating fan impeller are arranged on the diffuser, the height of each arc-shaped long and short blade is 1000-1100 mm higher than that of the circulating fan impeller, each arc-shaped long and short blade comprises a long guide blade and a short guide blade, each short guide blade is arranged between the two long guide blades, the head of each long guide blade is arc-shaped, and the tail of each long guide blade is linear; the short guide vane is linear; the current collector is arranged on the diffuser, the bottom of the current collector is of a flat plate structure, and the flow guide cylinder and the core part bracket are arranged at the central position of the current collector.
According to the controllable atmosphere strong convection circulation bell-type furnace platform of many piles of material as above, its characterized in that: the furnace platform base is an airtight flange structure consisting of an alloy steel plate and section steel.
According to the controllable atmosphere strong convection circulation bell-type furnace platform of many piles of material as above, its characterized in that: the sealing device comprises a hydraulic cylinder and an O-shaped sealing ring.
According to the controllable atmosphere strong convection circulation bell-type furnace platform of many piles of material as above, its characterized in that: the circulating fan motor is fixed on the lower part of the furnace platform base, an output shaft of the circulating fan motor penetrates through the heat insulation layer to be connected with a circulating fan impeller arranged on the upper part of the heat insulation layer, and a steel lining plate and refractory ceramic fibers are arranged around the output shaft of the circulating fan motor.
According to the controllable atmosphere strong convection circulation bell-type furnace platform of many piles of material as above, its characterized in that: the height of the arc-shaped long and short blades is 1050mm higher than that of the circulating fan impeller.
According to the controllable atmosphere strong convection circulation bell-type furnace platform of many piles of material as above, its characterized in that: and a guide ring is arranged on the top of the current collector.
According to the controllable atmosphere strong convection circulation bell-type furnace platform of many piles of material as above, its characterized in that: the diameter of the circulating fan impeller is more than or equal to 1250mm, a high-temperature alloy cast-weld combination mode is adopted, and blades of the circulating fan impeller are radial; the circulating fan motor is a long-shaft special motor with variable frequency and adjustable speed, and the gas circulation times of the circulating fan motor are 1.02.5 times/s.
The invention has the beneficial effects that: firstly, through structural design, can bear the object of great weight, 37 piles of work pieces of disposable can the stove of charging realize that many piles of are loaded. Secondly, the heat exchange efficiency is improved, and the temperature uniformity in the furnace is improved. Thirdly, the phenomenon of rotation separation and even backflow can be avoided.
Drawings
FIG. 1 is a sectional elevation view of the bottom of a furnace platform.
FIG. 2 is a sectional top view of the bottom of the furnace platform.
Fig. 3 is a schematic view of a diffuser configuration.
Description of reference numerals: the furnace comprises a furnace platform base 1, a sealing device 2, a supporting device 3, a heat insulation layer 4, a shell 5, a circulating fan impeller 6, a circulating fan motor 7, a diffuser 8, a current collector 9, a guide cylinder 10, a core support 11, long guide blades 12 and short guide blades 13.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in figures 1 and 2, the controlled atmosphere strong convection circulation bell type furnace platform for multi-stack charging of the invention comprises a furnace platform base 1, a sealing device 2, a supporting device 3, a heat insulation layer 4, a shell 5, a circulation fan impeller 6, a circulation fan motor 7, a diffuser 8, a current collector 9, a guide cylinder 10 and a core support 11.
The furnace platform base 1 is an airtight flange structure consisting of an alloy steel plate and section steel. The sealing device 2 comprises 616 sets of special hydraulic cylinders and 1O-shaped sealing ring, and the sealing device 2 is arranged on the hearth base 1 and forms a sealing space together with the inner cover; therefore, in the working process, external harmful gas can be prevented from entering, and protective gases such as nitrogen, hydrogen and the like are introduced to realize controllable atmosphere heat treatment. The supporting device 3 comprises a plurality of sets of heat-resistant steel supporting columns, and the supporting device 3 is fixed on the furnace platform base 1 and jointly bears the weight of the upper equipment and the heat treatment workpiece; the supporting device 3 effectively bears the load of the heat treatment workpiece and other components. The welding is in casing 5 on stove top base 1, fills thermal-insulated heat preservation 4, and thermal-insulated heat preservation 4 and 3 handing-over of strutting arrangement are in steel welt and refractory ceramic fibre around strutting arrangement 3, and steel welt and refractory ceramic fibre play thermal-insulated effect, can effectively reduce heat loss, guarantee the atmosphere cleanliness factor simultaneously. The installation mode of the circulating fan impeller 6 and the circulating fan motor 7 is fixed at the central position of the furnace platform base 1. Wherein, circulating fan motor 7 is fixed in the lower part of furnace platform base 1, and circulating fan motor 7 output shaft passes thermal-insulated heat preservation 4 and is connected with the circulating fan impeller 6 who sets up in thermal-insulated heat preservation 4 upper portion, also sets up steel welt and refractory ceramic fibre around circulating fan motor 7 output shaft preferably.
As shown in fig. 1 and 2, the diffuser 8 is mounted on the support device 3, the diffuser 8 is disposed around the circulating fan impeller 6, the bottom of the diffuser 8 is of a flat plate structure, the diffuser 8 is provided with arc-shaped long and short blades which rotate in the same direction as the circulating fan impeller 6, the height of each arc-shaped long and short blade is 1000mm to 1100mm, preferably 1050mm higher than that of the circulating fan impeller 6, the blade layout is determined based on parameter correlation calculation of the circulating fan impeller 6, and the inlet mounting angle and the outlet mounting angle of each arc-shaped long and short blade form a proper included angle with the airflow; meanwhile, the thickness of the blade is calculated according to the bearing load.
As shown in fig. 3, the arc-shaped long and short blades of the diffuser 8 include long guide blades 12 and short guide blades 13, the short guide blades 13 are arranged between the two long guide blades 12, the head of each long guide blade 12 is arc-shaped, and the tail of each long guide blade 12 is linear; the short guide vanes 13 are linear. The arc shape of the head of the long guide vane 12 can avoid the phenomenon of rotation separation and even backflow.
As shown in fig. 1 and 2, the collector 9 is mounted on the diffuser 8 and connected by a cover plate, the bottom of the collector 9 is of a flat plate structure, 4 guide vanes and 6 annular rib plates are arranged on the collector, and the thickness is calculated according to the bearing load. The top of the current collector 9 is also provided with a guide ring, which is convenient for guiding and positioning the inner cover during hoisting and better isolates the air flow.
A guide shell 10 and a core support 11 are arranged in the center of the collector 9. The guide cylinder 10 isolates the air inlet and the air outlet of the circulating fan impeller 6 to avoid backflow; the core support 11 carries the central workpiece load, and at the same time, by providing a suitable top opening, the gas flow field distribution of the current collector 9 is controlled, and the gas flow area is controlled, thereby achieving better furnace temperature uniformity.
The diameter of the circulating fan impeller 6 is more than or equal to 1250mm, a high-temperature alloy cast-weld combination mode is adopted, and blades of the circulating fan impeller 6 are radial; the circulating fan motor 7 is a long shaft special motor with variable frequency speed regulation and is provided with a water cooling device and an air cooling device. The circulating fan motor 7 can be a strong convection circulating variable frequency fan and can be provided with a water cooling device and an air cooling device; the gas circulation times are 1.02.5 times/s, the heat exchange efficiency is improved, and the temperature uniformity in the furnace is improved.
Finally, it should be noted that the above detailed description is only for illustrating the technical solutions of the patent, but not for limiting, and although the technical solutions of the patent are described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the patent without departing from the spirit and scope of the technical solutions of the patent, which should be covered by the claims of the patent.
Claims (7)
1. The utility model provides a controllable atmosphere strong convection current circulation bell-type furnace platform of many buttress charges, includes furnace platform base, sealing device, strutting arrangement, thermal-insulated heat preservation, casing, circulating fan impeller, circulating fan motor, diffuser, collector, draft tube, core support, and sealing device installs on furnace platform base, and strutting arrangement includes the heat-resistant steel support column, and strutting arrangement fixes on furnace platform base, and the welding fills thermal-insulated heat preservation, its characterized in that in the casing on furnace platform base: the heat insulation layer and the supporting device are connected and positioned on a steel lining plate and refractory ceramic fibers around the supporting device, a circulating fan impeller and a circulating fan motor are fixed at the central position of a furnace platform base in an installation mode, the bottom of a diffuser is of a flat plate structure, the diffuser is installed on the supporting device in a passing mode, the diffuser is arranged around the circulating fan impeller, arc-shaped long and short blades which rotate in the same direction as the circulating fan impeller are arranged on the diffuser, the height of each arc-shaped long and short blade is 1000-1100 mm higher than that of the circulating fan impeller, each arc-shaped long and short blade comprises a long guide blade and a short guide blade, each short guide blade is arranged between the two long guide blades, the head of each long guide blade is arc-shaped, and the tail of each long guide blade is linear; the short guide vane is linear; the current collector is arranged on the diffuser, the bottom of the current collector is of a flat plate structure, and the flow guide cylinder and the core part bracket are arranged at the central position of the current collector.
2. A controlled atmosphere strong convection circulation bell type furnace station of multi-stack charge as claimed in claim 1 wherein: the furnace platform base is an airtight flange structure consisting of an alloy steel plate and section steel.
3. A controlled atmosphere strong convection circulation bell type furnace station of multi-stack charge as claimed in claim 1 wherein: the sealing device comprises a hydraulic cylinder and an O-shaped sealing ring.
4. A controlled atmosphere strong convection circulation bell type furnace station of multi-stack charge as claimed in claim 1 wherein: the circulating fan motor is fixed on the lower part of the furnace platform base, an output shaft of the circulating fan motor penetrates through the heat insulation layer to be connected with a circulating fan impeller arranged on the upper part of the heat insulation layer, and a steel lining plate and refractory ceramic fibers are arranged around the output shaft of the circulating fan motor.
5. A controlled atmosphere strong convection circulation bell type furnace station of multi-stack charge as claimed in claim 1 wherein: the height of the arc-shaped long and short blades is 1050mm higher than that of the circulating fan impeller.
6. A controlled atmosphere strong convection circulation bell type furnace station of multi-stack charge as claimed in claim 1 wherein: and a guide ring is arranged on the top of the current collector.
7. A controlled atmosphere strong convection circulation bell type furnace station of multi-stack charge as claimed in claim 1 wherein: the diameter of the circulating fan impeller is more than or equal to 1250mm, a high-temperature alloy cast-weld combination mode is adopted, and blades of the circulating fan impeller are radial; the circulating fan motor is a long-shaft special motor with variable frequency and adjustable speed, and the gas circulation times of the circulating fan motor are 1.02.5 times/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111558987.5A CN114214490A (en) | 2021-12-20 | 2021-12-20 | Controllable atmosphere strong convection circulation bell-type furnace platform of many piles of materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111558987.5A CN114214490A (en) | 2021-12-20 | 2021-12-20 | Controllable atmosphere strong convection circulation bell-type furnace platform of many piles of materials |
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| Publication Number | Publication Date |
|---|---|
| CN114214490A true CN114214490A (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111558987.5A Pending CN114214490A (en) | 2021-12-20 | 2021-12-20 | Controllable atmosphere strong convection circulation bell-type furnace platform of many piles of materials |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2670373Y (en) * | 2003-12-25 | 2005-01-12 | 宝山钢铁股份有限公司 | Bell-type annealer coil bases |
| CN102454629A (en) * | 2010-10-25 | 2012-05-16 | 天津长光伟业特种风机有限公司 | Fan impeller |
| CN204692190U (en) * | 2015-02-04 | 2015-10-07 | 浙江理工大学 | A kind of vane diffuser with deviated splitter vane |
| CN214009915U (en) * | 2020-10-10 | 2021-08-20 | 鞍钢股份有限公司 | Furnace platform for bell-type furnace |
-
2021
- 2021-12-20 CN CN202111558987.5A patent/CN114214490A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2670373Y (en) * | 2003-12-25 | 2005-01-12 | 宝山钢铁股份有限公司 | Bell-type annealer coil bases |
| CN102454629A (en) * | 2010-10-25 | 2012-05-16 | 天津长光伟业特种风机有限公司 | Fan impeller |
| CN204692190U (en) * | 2015-02-04 | 2015-10-07 | 浙江理工大学 | A kind of vane diffuser with deviated splitter vane |
| CN214009915U (en) * | 2020-10-10 | 2021-08-20 | 鞍钢股份有限公司 | Furnace platform for bell-type furnace |
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