CN105969972B - A kind of high temperature bell-type furnace protects gas intake and exhaust method and device - Google Patents
A kind of high temperature bell-type furnace protects gas intake and exhaust method and device Download PDFInfo
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- CN105969972B CN105969972B CN201610557085.2A CN201610557085A CN105969972B CN 105969972 B CN105969972 B CN 105969972B CN 201610557085 A CN201610557085 A CN 201610557085A CN 105969972 B CN105969972 B CN 105969972B
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- air inlet
- pipe
- high temperature
- type furnace
- inlet pipe
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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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
- C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
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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)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention provides a kind of high temperature bell-type furnace to protect gas intake and exhaust method and device; for the Technology for Heating Processing carried out in high temperature bell-type furnace; greatly reduce the temperature difference in outside in pending workpiece; ensure the uniformity of in-furnace temperature change; so as to greatly improve thermal treatment quality; high temperature bell-type furnace of the present invention protects gas intake and exhaust method, and its technical scheme is to include following two stages：(1) heating and holding stage enter middle row's mode using side；(2) cooling stage enters side row's mode in using, and the technical scheme of high temperature bell-type furnace protection gas air inlet and outlet device of the present invention includes air inlet tube assembly, exhaust pipe assembly, central tube and side pipe.
Description
Technical field
The present invention relates to technical field of metal heat treatment, specially a kind of high temperature bell-type furnace protection gas intake and exhaust method and dress
Put.
Background technology
At present, high temperature protection atmosphere bell furnace, or realize that protective atmosphere heats other type of furnaces, such as high temperature protection by inner cover
The ring-like stove of atmosphere, high temperature protection atmosphere square type stove, high temperature protection atmosphere tunnel heating, protect the intake and exhaust mode of gas, nothing
One exception, using table central lower air inlet, after coil of strip endoporus, by the mode of table side exhaust.This intake and exhaust side
It is relatively simple for structure used in formula, its advantage be using it is reliable, fault rate is low.But a significant deficiency be present in it, i.e., in holding stage,
The protection gas of lower temperature enters coil of strip bottom endoporus from table center, and protection gas, which will absorb a large amount of heat energy, raises own temperature
While, amount of heat is taken away, temperature on the inside of coil of strip is reduced up to more than 100 DEG C, increases in coil of strip outer surface and center
The hole surface temperature difference, reduce the quality of coil annealing.
The content of the invention
The present invention for the Technology for Heating Processing that is carried out in high temperature bell-type furnace provide a kind of brand-new intake and exhaust method and
Device, the temperature difference in outside in pending workpiece is greatly reduced, ensure the uniformity of in-furnace temperature change, so as to greatly improve heat
Handle quality.
High temperature bell-type furnace of the present invention protects gas intake and exhaust method, and its technical scheme is to include following two ranks
Section：
(1) heating and holding stage, enter middle row's mode using side, that is, protect gas to be entered by high temperature bell-type furnace bottom pending
Region between workpiece and high temperature bell-type furnace side wall, cover top is then gone upward to, furnace bottom is come downwards to by pending inside workpiece, and by
Hearth center exhaust outlet discharges out of the furnace；
(2) cooling stage, side row's mode is entered in, that is, protects gas to be entered by high temperature bell-type furnace lower central in stove to treating
Inside workpiece is handled, cover top is then gone upward to by pending inside workpiece, by between pending workpiece and high temperature bell-type furnace side wall
Region come downwards to furnace bottom, and discharged out of the furnace by the exhaust outlet of hearth center side.
The technical scheme of high temperature bell-type furnace protection gas air inlet and outlet device of the present invention includes air inlet tube assembly, blast pipe
Component, central tube and side pipe, the air inlet tube assembly include main air inlet pipe, air inlet pipe one and air inlet pipe two, connected by one three
Head connection, the steam discharge tube assembly include main exhaust, blast pipe one and blast pipe two, are connected by a three-way connection, air inlet
Pipe one connects central tube with the other end of blast pipe one, and air inlet pipe two connects side pipe with the other end of blast pipe two, the main air inlet pipe,
One is equipped with air inlet pipe one, air inlet pipe two, main exhaust, blast pipe one and blast pipe two to be turned on and off respective tube
The valve on road.
Further, the central tube other end is entered in stove by high temperature bell-type furnace bottom centre and stretches to pending work
Part interior lower end, the side pipe other end are entered in stove by high temperature bell-type furnace bottom and stretch to pending workpiece and high temperature bell-type
The bottom in region between furnace sidewall.
Further, on the main air inlet pipe, air inlet pipe one, air inlet pipe two, main exhaust, blast pipe one and blast pipe two
Valve be magnetic valve.
The beneficial effect of the above method and device is：Above-mentioned intake and exhaust method and apparatus can be effectively improved to pending
The firing rate of workpiece, the temperature difference of pending workpiece inside and outside wall can be particularly greatly reduced, pending workpiece temperature is effectively ensured
The uniformity of degree, the furnace annealing temperature difference can be made to reach 20-40 DEG C, so as to improve thermal treatment quality to workpiece to be handled；On
It is simple, reasonable to state apparatus structure, manufacturing cost is low, installs and easy to operate.
Brief description of the drawings
Fig. 1 is the structural representation that air inlet and outlet device of the present invention is installed on high temperature bell-type furnace.
Fig. 2 is Fig. 1 A-A sectional views.
Embodiment
Below using coil of strip as pending workpiece, embodiments of the invention are described in detail with reference to accompanying drawing.
The structure for first protecting gas air inlet and outlet device to above-mentioned high temperature bell-type furnace in the present embodiment is specifically described, right
Further above-mentioned high temperature bell-type furnace protection gas intake and exhaust method is described in the description of the device operation principle.
The structure of high temperature bell-type furnace protection gas air inlet and outlet device described in the present embodiment includes air inlet tube assembly, exhaust stack
Part, central tube 9 and side pipe 12, the air inlet tube assembly includes main air inlet pipe 3, air inlet pipe 1 and air inlet pipe 2 13, by one three
Pass joint connects, and the exhaust pipe assembly includes main exhaust 1, blast pipe 1 and blast pipe 2 15, is connected by a three-way connection
Connect, air inlet pipe 1 and blast pipe 1, other end connection central tube 9, air inlet pipe 2 13 and the other end connecting side of blast pipe 2 15
Pipe 12, main air inlet pipe 3 are provided with master air suction valve 4, and air inlet pipe 1 is provided with intake valve 1, and air inlet pipe 2 13 is provided with intake valve
2 14, main exhaust 1 is provided with main exhaust valve 2, and blast pipe 1 is provided with air bleeding valve 1, and blast pipe 2 15 is provided with air bleeding valve
2 16, described master air suction valve 4, intake valve 1, intake valve 2 13, main exhaust valve 2, air bleeding valve 1 and air bleeding valve 2 16 are
Magnetic valve.
The other end of central tube 9 is entered in stove by the bottom centre of high temperature bell-type furnace 18 and stretches into the interior lower end of coil of strip 17,
Its end is provided with center intake and exhaust mouth 10, and the other end of side pipe 12 is entered in stove by the bottom of high temperature bell-type furnace 18 and stretches to coil of strip 17
The bottom in region between the side wall of high temperature bell-type furnace 18, its end are provided with side intake and exhaust mouth 11.
Said apparatus is applied to the annealing process of coil of strip 17, in its heating and holding stage, enters middle row's mode using side, i.e.,
Protect gas to enter the region between coil of strip 17 and the side wall of high temperature bell-type furnace 18 by the bottom of high temperature bell-type furnace 18, then go upward to cover
Top, by coil of strip inner downlink to furnace bottom, and is discharged out of the furnace by hearth center exhaust outlet, in this course, main exhaust valve 2, master
Intake valve 4 is normally opened, closes intake valve 1, air bleeding valve 2 16, opens intake valve 2 14, air bleeding valve 1, protection gas is through main air inlet
Pipe 3, master air suction valve 4, intake valve 2 14, air inlet pipe 2 13, side pipe 12, through side intake and exhaust mouth 11, into coil of strip 17 and high temperature cover
Region between the furnace wall of formula stove 18.After protecting gas to be heated, high-temp waste gas enters the endoporus of coil of strip 17 from the endoporus top of coil of strip 17, and
From top to bottom by the endoporus of coil of strip 17 after, center intake and exhaust mouth 10, central tube 9, through blast pipe are passed through by the endoporus bottom of coil of strip 17
One 6, air bleeding valve 1, main exhaust valve 2, main exhaust 1 are expelled to outside stove.
Cooling stage：Main exhaust valve 2, master air suction valve 4 are normally opened.Intake valve 2 14, air bleeding valve 1 are closed, opens intake valve
One 7, air bleeding valve 2 16.Gas is protected through main air inlet pipe 3, master air suction valve 4, intake valve 1, air inlet pipe 1, center air inlet-outlet pipe 9,
Center intake and exhaust mouth 9, the endoporus of coil of strip 17 is entered by the endoporus bottom of coil of strip 17, rise in hole and take away heat from the endoporus of coil of strip 17
Afterwards, heated waste gas is from the bottom on the outside of heating furnace coil of strip 17 and furnace wall gap, through side intake and exhaust mouth 11, into side pipe 12,
It is expelled to through blast pipe 2 15, air bleeding valve 2 16, main exhaust valve 2, main exhaust 1 outside stove.
Intake and exhaust method and apparatus described in the present embodiment have three big features：
One is that apparatus structure is extremely simple, opens and closes associated pipe by the alternating of magnetic valve, conveniently and efficiently
The inlet and outlet direction of adjustment protection gas.
Secondly be in heating and holding stage, middle row's mode is entered using protection gas side, after protection gas is entered by outside and
When be heated, high-temp waste gas from coil of strip endoporus top enter coil of strip endoporus, after coil of strip endoporus by coil of strip endoporus bottom discharge, greatly
Coil of strip endoporus heating environment is improved greatly, the firing rate of coil of strip can be improved, particularly greatly reduces on the outside of coil of strip and inner side
The temperature difference, greatly improve steel roll temperature uniformity.
Thirdly being cooling stage, using side row's mode is entered in protection gas, not heated low-temperature protection gas is by coil of strip
Hole enters, and absorbs heat from high-temperature steel coil endoporus, is heated itself and takes away amount of heat, improves the cooling of coil of strip endoporus in cover
Speed.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (1)
1. a kind of high temperature bell-type furnace protects gas air inlet and outlet device, it is characterised in that：Including air inlet tube assembly, exhaust pipe assembly, in
Heart pipe and side pipe, the air inlet tube assembly include main air inlet pipe, air inlet pipe one and air inlet pipe two, are connected by a three-way connection,
The exhaust pipe assembly includes main exhaust, blast pipe one and blast pipe two, is connected by a three-way connection, the He of air inlet pipe one
The other end of blast pipe one connects central tube, and air inlet pipe two connects side pipe, the main air inlet pipe, air inlet pipe with the other end of blast pipe two
First, one is equipped with air inlet pipe two, main exhaust, blast pipe one and blast pipe two to be turned on and off the valve of corresponding pipeline
, the valve on the main air inlet pipe, air inlet pipe one, air inlet pipe two, main exhaust, blast pipe one and blast pipe two is electromagnetism
Valve, the central tube other end are entered in stove by high temperature bell-type furnace bottom centre and stretch to pending inside workpiece lower end, institute
The side pipe other end is stated by high temperature bell-type furnace bottom to be entered in stove and stretch to area between pending workpiece and high temperature bell-type furnace side wall
The bottom in domain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610557085.2A CN105969972B (en) | 2016-07-15 | 2016-07-15 | A kind of high temperature bell-type furnace protects gas intake and exhaust method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610557085.2A CN105969972B (en) | 2016-07-15 | 2016-07-15 | A kind of high temperature bell-type furnace protects gas intake and exhaust method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105969972A CN105969972A (en) | 2016-09-28 |
| CN105969972B true CN105969972B (en) | 2018-03-30 |
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| CN201610557085.2A Active CN105969972B (en) | 2016-07-15 | 2016-07-15 | A kind of high temperature bell-type furnace protects gas intake and exhaust method and device |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT507671B1 (en) * | 2009-03-13 | 2010-07-15 | Ebner Ind Ofenbau | HIGH-TEMPERATURE PISTON FOR GLOWING TREATMENT OF TINS |
| CN102538444B (en) * | 2012-02-08 | 2014-11-05 | 天津市科翔迅通磁性材料厂 | Mn-Zn ferrite sintering furnace and sintering process thereof |
| CN204214258U (en) * | 2014-09-23 | 2015-03-18 | 杭州东江摩擦材料有限公司 | High-temperature pressurizing formula clock hood type furnace in major diameter |
| CN205856551U (en) * | 2016-07-15 | 2017-01-04 | 武汉电炉有限公司 | A kind of high temperature bell-type furnace protection gas air inlet and outlet device |
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