CN104164546A - Heat exchanger for slow cooling and preheating of isothermal normalizing furnace - Google Patents
Heat exchanger for slow cooling and preheating of isothermal normalizing furnace Download PDFInfo
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- CN104164546A CN104164546A CN201410378932.XA CN201410378932A CN104164546A CN 104164546 A CN104164546 A CN 104164546A CN 201410378932 A CN201410378932 A CN 201410378932A CN 104164546 A CN104164546 A CN 104164546A
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- combustion flue
- heat exchanger
- lower floor
- slow cooling
- preheating
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Abstract
The invention discloses a heat exchanger for slow cooling and preheating of an isothermal normalizing furnace. An upper layer of combustion flue and a lower layer of combustion flue are arranged in a furnace body of the isothermal normalizing furnace; a preheating section is arranged at the front end of the upper layer of combustion flue; a heating insulation section is arranged at the middle and rear end of the upper layer of combustion flue; a slow cooling section is arranged at the front end of the lower layer of combustion flue; a rapid cooling section and an isothermal section are sequentially arranged on the middle and rear end of the lower layer of combustion flue along the conveying direction of materials; and transmission net bands are arranged inside the upper layer of combustion flue and the lower layer of combustion flue. Particularly, the furnace body forms a heat convection zone at the front ends of the upper and lower layers of combustion flues in a penetrating manner while the heat exchanger is arranged inside the heat convection zone, and is provided with a fan at the top of the heat convection zone, and an air flue which extends to the lower layer of combustion flue in a semi-closed manner; and air inside the heat convection zone flows through the upper layer of combustion flue, the fan and the air flue from the lower layer of combustion flue in an internal cycle. By application of the heat exchanger disclosed by the invention, the internal cycle speed for slow cooling and preheating of the isothermal normalizing furnace can be controlled, full recycling utilization of heat energy is greatly improved, and the industrial production requirements of outstanding energy conservation and emission reduction are met.
Description
Technical field
The present invention relates to a kind of isothermal normalizing treatment unit of metal parts, relate in particular to and a kind of heat energy in normalizing treatment is rationally utilized to the heat exchanger of realizing workpiece slow cooling thermal pretreatment, belong to casting equipment field.
Background technology
In prior art, such as, for normalizing and the dry quenching processing of metal works (grey cast iron, high chromium steel ball etc.), provide necessary preparation as forging or casting workpiece Deng Hou road Cutting Process.Generally in stove after heating and thermal insulation, succeeded by Rapid cooling in the air, in cooling rear a large amount of losses, there is the defects such as energy dissipation is large, and thermal pollution is serious in the heat energy of workpiece wherein thus.
Thus, there is creator this to be proposed to improvement project, as the disclosed a kind of thermal recovery type continuous isothermal normalizing furnace of patent (ZL 2008201163260), although it provides the heat recovery that utilizes slow cooling section to carry out the technical solution of preheating to material recently, and obtain and reduced heat waste, save the certain effect of energy consumption.But still there is many imperfection parts in such scheme, for example, in the time utilizing the heat energy discharging in high temperature workpiece annealing process to carry out the thermal pretreatment of workpiece recently, moderate due to thermal convection effect, efficiency of utilization is difficult to improve, and adopt outside blower fan air intake to drive the words of convection current, will have a strong impact on thermal equilibrium, cause heat-energy losses, be that slow cooling effect or pre-heat effect are all difficult to arrive expection.
Summary of the invention
Object of the present invention is intended to propose a kind of heat exchanger for isothermal normalizing furnace slow cooling preheating, solves the thermal convection strength problem of slow cooling warm-up control in normalizing and dry quenching technique.
The technical solution that the present invention realizes above-mentioned purpose is: for the heat exchanger of isothermal normalizing furnace slow cooling preheating, in the body of heater of isothermal normalizing furnace, be provided with upper strata combustion flue and lower floor's combustion flue, the front end of upper strata combustion flue is preheating section, the middle rear end of upper strata combustion flue is heating and thermal insulation section, the front end of lower floor's combustion flue is slow cooling section, the middle rear end of lower floor's combustion flue is followed successively by instant cold section and isothermal section with material delivery direction, on, in lower floor's combustion flue, foraminous conveyer is set, it is characterized in that: described body of heater is upper, the front end of lower floor's combustion flue is formed through thermal convection district, described heat exchanger is located at thermal convection district, and heat exchanger is provided with the blower fan that is positioned at top, thermal convection district, the semiclosed air channel that extends to lower floor's combustion flue, air in thermal convection district from lower floor's combustion flue through upper strata combustion flue, blower fan and air channel internal recycle flow.
Further, described blower fan has modular foundation, and blower fan is connected with body of heater detachable-type sealed.
Further, described thermal convection district is divided into along material delivery direction the heat exchanger that two-stage is separated by above, and each heat exchanger is respectively equipped with the blower fan that is positioned at top, thermal convection district, and the drive end of whole blower fans is connected to the electrical control panel of isothermal normalizing furnace.
Further, described air channel has from combustion flue top side, upper strata covers to the dividing plate of lower floor's combustion flue bottom side, and the blast inlet of blower fan is the top of upper strata combustion flue, and the air outlet of blower fan passes straight through to the foraminous conveyer bottom of lower floor's combustion flue along dividing plate.
This heat exchanger proposed by the invention, compare to prior art and possess comparatively significant advantage: it can realize the internal recycle rate of isothermal normalizing furnace slow cooling and preheating controlled, greatly improve the abundant recycling of heat energy, met the demand of industrial production of outstanding energy-saving and emission-reduction.
Brief description of the drawings
Fig. 1 is the sectional structure schematic diagram of heat exchanger of the present invention.
Embodiment
The present invention is by the problems that traditional isothermal normalizing furnace is run in process practice, and innovation proposes a kind of heat exchanger for isothermal normalizing furnace slow cooling preheating, optimizes with this energy consumption that saves control normalizing and dry quenching technique.
The constitutional features of heat exchanger of the present invention as shown in Figure 1.Common isothermal normalizing furnace, in its body of heater 1, be provided with upper strata combustion flue and lower floor's combustion flue, the front end of upper strata combustion flue is preheating section, and the middle rear end of upper strata combustion flue is heating and thermal insulation section, the front end of lower floor's combustion flue is slow cooling section, and the middle rear end of lower floor's combustion flue is followed successively by instant cold section and isothermal section with material delivery direction.In upper and lower layer combustion flue, foraminous conveyer is set, carries workpiece with this and carry out art breading by each temperature section.
As the texture improvement of this creation, this body of heater 1 is formed through thermal convection district at the front end of upper and lower floor combustion flue, and this heat exchanger is just located at thermal convection district, and heat exchanger is provided with the blower fan 5 that is positioned at top, thermal convection district, the semiclosed air channel 51 that extends to lower floor's combustion flue, the air in thermal convection district flows through upper strata combustion flue 21, blower fan 5 and air channel 51 internal recycle from lower floor's combustion flue 22.Wherein, air channel 51 has from combustion flue top side, upper strata covers to the dividing plate of lower floor's combustion flue bottom side, and the blast inlet of blower fan is the top of upper strata combustion flue, and the air outlet of blower fan passes straight through to the foraminous conveyer bottom of lower floor's combustion flue along dividing plate.As can be seen here, this heat exchanger is to realize by the internal air circulation in this region.
It should be noted that, in this heat exchanger, because the temperature of charge in lower floor's combustion flue is higher than the material recently in the combustion flue of upper strata, therefore generally thermal convection can exist all the time.But this pure natural convection action cannot meet the slow cooling thermal pretreatment effect under technological design, therefore need this normalizing furnace to apply the power that external force provides thermal convection to accelerate.
As the further optimization of such scheme, this blower fan has modular foundation, and blower fan is connected with body of heater detachable-type sealed.Illustrated modular foundation is that right cylinder is embedded in furnace wall, and the flabellum of blower fan stretches in body of heater, and the flabellum drive shaft one of blower fan is connected to controlled rotation among modular foundation.Except illustrated embodiment, this modular foundation can have more contour structures, only need meet flexible dismounting, requirement with furnace wall sealing engagement.
In addition, this thermal convection district is divided into along material delivery direction the heat exchanger that two-stage is separated by above, and each heat exchanger is respectively equipped with the blower fan that is positioned at top, thermal convection district, and the drive end of whole blower fans is connected to the electrical control panel of isothermal normalizing furnace.Deliver to slow cooling section for material from isothermal section and lower the temperature gradually, can control flexibly driving blower fan, maintain or accelerate the thermal convection internal recycle air-flow of respective heat exchanger, further promote air cooling effect.
As fully visible, this heat exchanger proposed by the invention, compare to prior art and possess comparatively significant advantage: it can realize the internal recycle rate of isothermal normalizing furnace slow cooling and preheating controlled, has greatly improved the abundant recycling of heat energy, meets the demand of industrial production of outstanding energy-saving and emission-reduction.
Below embodiment by reference to the accompanying drawings describes, and is intended to be convenient to understand innovation essence of the present invention, but not limits the claim protection domain of the multifarious embodiment of the present invention and requirement with this.In every case understand the present invention, and the equivalent structure carrying out according to above-described embodiment changes or member is replaced, and can realize the design of identical object and effect, all should be considered as the infringement to present patent application protection content.
Claims (4)
1. for the heat exchanger of isothermal normalizing furnace slow cooling preheating, in the body of heater of isothermal normalizing furnace, be provided with upper strata combustion flue and lower floor's combustion flue, the front end of upper strata combustion flue is preheating section, the middle rear end of upper strata combustion flue is heating and thermal insulation section, the front end of lower floor's combustion flue is slow cooling section, the middle rear end of lower floor's combustion flue is followed successively by instant cold section and isothermal section with material delivery direction, on, in lower floor's combustion flue, foraminous conveyer is set, it is characterized in that: described body of heater is upper, the front end of lower floor's combustion flue is formed through thermal convection district, described heat exchanger is located at thermal convection district, and heat exchanger is provided with the blower fan that is positioned at top, thermal convection district, the semiclosed air channel that extends to lower floor's combustion flue, air in thermal convection district from lower floor's combustion flue through upper strata combustion flue, blower fan and air channel internal recycle flow.
2. according to claim 1 for the heat exchanger of isothermal normalizing furnace slow cooling preheating, it is characterized in that: described blower fan has modular foundation, blower fan is connected with body of heater detachable-type sealed.
3. according to claim 1 for the heat exchanger of isothermal normalizing furnace slow cooling preheating, it is characterized in that: described thermal convection district is divided into along material delivery direction the heat exchanger that two-stage is separated by above, each heat exchanger is respectively equipped with the blower fan that is positioned at top, thermal convection district, and the drive end of whole blower fans is connected to the electrical control panel of isothermal normalizing furnace.
4. according to claim 1 for the heat exchanger of isothermal normalizing furnace slow cooling preheating, it is characterized in that: described air channel has from combustion flue top side, upper strata covers to the dividing plate of lower floor's combustion flue bottom side, the blast inlet of blower fan is the top of upper strata combustion flue, and the air outlet of blower fan passes straight through to the foraminous conveyer bottom of lower floor's combustion flue along dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410378932.XA CN104164546A (en) | 2014-08-04 | 2014-08-04 | Heat exchanger for slow cooling and preheating of isothermal normalizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410378932.XA CN104164546A (en) | 2014-08-04 | 2014-08-04 | Heat exchanger for slow cooling and preheating of isothermal normalizing furnace |
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| CN104164546A true CN104164546A (en) | 2014-11-26 |
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| CN201410378932.XA Pending CN104164546A (en) | 2014-08-04 | 2014-08-04 | Heat exchanger for slow cooling and preheating of isothermal normalizing furnace |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283655Y (en) * | 1996-01-26 | 1998-06-10 | 机械工业部无锡油泵油嘴研究所 | Car-type heated air circulation heat treating furnace |
| CN201193236Y (en) * | 2008-05-12 | 2009-02-11 | 黄培 | Thermal recovery type continuous isothermal normalizing furnace |
| CN201306928Y (en) * | 2008-11-10 | 2009-09-09 | 镇江市裕久精机制造有限公司 | Air circulation structure of large straight-flow furnace |
| CN202090024U (en) * | 2011-05-12 | 2011-12-28 | 黄培 | U-type thermal recycling isothermal normalizing furnace |
| JP2012117803A (en) * | 2010-11-08 | 2012-06-21 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Humidifier for refrigerator and cold storage and method of maturing fruits using the same |
| CN202595189U (en) * | 2012-02-16 | 2012-12-12 | 黄培 | Heavy energy type continuous isothermal normalizing/annealing furnace |
| CN202671589U (en) * | 2012-06-21 | 2013-01-16 | 苏州新凌电炉有限公司 | Novel energy-saving continuous type normalizing heat treatment furnace |
| CN203999687U (en) * | 2014-08-04 | 2014-12-10 | 苏州新凌电炉有限公司 | Heat exchanger for isothermal normalizing furnace slow cooling preheating |
-
2014
- 2014-08-04 CN CN201410378932.XA patent/CN104164546A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283655Y (en) * | 1996-01-26 | 1998-06-10 | 机械工业部无锡油泵油嘴研究所 | Car-type heated air circulation heat treating furnace |
| CN201193236Y (en) * | 2008-05-12 | 2009-02-11 | 黄培 | Thermal recovery type continuous isothermal normalizing furnace |
| CN201306928Y (en) * | 2008-11-10 | 2009-09-09 | 镇江市裕久精机制造有限公司 | Air circulation structure of large straight-flow furnace |
| JP2012117803A (en) * | 2010-11-08 | 2012-06-21 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Humidifier for refrigerator and cold storage and method of maturing fruits using the same |
| CN202090024U (en) * | 2011-05-12 | 2011-12-28 | 黄培 | U-type thermal recycling isothermal normalizing furnace |
| CN202595189U (en) * | 2012-02-16 | 2012-12-12 | 黄培 | Heavy energy type continuous isothermal normalizing/annealing furnace |
| CN202671589U (en) * | 2012-06-21 | 2013-01-16 | 苏州新凌电炉有限公司 | Novel energy-saving continuous type normalizing heat treatment furnace |
| CN203999687U (en) * | 2014-08-04 | 2014-12-10 | 苏州新凌电炉有限公司 | Heat exchanger for isothermal normalizing furnace slow cooling preheating |
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Application publication date: 20141126 |