CN105865194A - Heating furnace - Google Patents
Heating furnace Download PDFInfo
- Publication number
- CN105865194A CN105865194A CN201610224223.5A CN201610224223A CN105865194A CN 105865194 A CN105865194 A CN 105865194A CN 201610224223 A CN201610224223 A CN 201610224223A CN 105865194 A CN105865194 A CN 105865194A
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- CN
- China
- Prior art keywords
- flue
- furnace
- furnace shell
- pipe
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B2005/062—Cooling elements
- F27B2005/064—Cooling elements disposed in the furnace, around the chamber, e.g. coils
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a heating furnace comprising a furnace shell with a lower opening and a furnace pipe assembly arranged in the furnace shell in a penetrating manner. The furnace pipe assembly comprises a furnace pipe and a furnace table arranged in the furnace pipe and capable of ascending and descending; the position between the periphery of the lower portion of the furnace pipe and the bottom of the furnace shell is sealed through a lower sealing assembly; the upper portion of the furnace pipe is provided with a furnace pipe top connection pipe; the position between the periphery of the furnace pipe top connection pipe and a top plate of the furnace shell is sealed through an upper sealing assembly; and a plurality of heating elements inserted from the top of the furnace shell are arranged between the inner wall of the furnace shell and the furnace pipe. The heating furnace can heat radioactive materials in a closed environment and can utilize the rest of heating bodies to continue to complete heating under the condition that part of heating bodies lose efficacy; in a weak sealing link, a structure capable of performing double sealing and pressure detection is designed, and sealing reliability is improved; after heating ends, forced cooling can be performed, cooling time is saved, and the production efficiency is improved; and a modular structure is adopted, gradation is distinct, fast overhaul and replacement of parts are achieved, and time is saved.
Description
Technical field
The invention belongs to firing equipment field, be specifically related to a kind of heating furnace, be mainly used in having poison
Property or radioactivity material heating.
Background technology
At chemical field, it is often necessary to material is heated.When material has toxicity or radioactivity,
For avoiding toxicity or radioactivity diffusion, need in the environment of airtight, heat material；Simultaneously as
Radioactive existence, needs the fewest repair time when firing equipment carries out maintenance replacing,
And existing firing equipment cannot meet these requirements.It addition, for batch mode of heating, due to needs
Material could be taken out after furnace temperature is reduced to reasonable temperature, and temperature fall time is the longest, significantly constrains
The raising of productivity ratio.When heating element heater breaks down, existing electric furnace is difficult to continue heating
Work.
Summary of the invention
For defect present in prior art, the present invention provides a kind of heating furnace, it is possible to realize airtight
Heating to radioactivity material under environment, and can be utilized remaining in the case of part calandria loses efficacy
Calandria has continued heating；For the sealing problem under hot conditions, in the weak link sealed,
It is designed with and can carry out dual-seal and pressure detection structure, improve the reliability of sealing；In heating
Can carry out after end forcing cooling, be greatly saved cool time, improve production efficiency, have good
Economy；This heating furnace uses modular construction, well arranged, it is achieved the Quick overhaul of parts
Change, save the time.
For reaching object above, the technical solution used in the present invention is: provide a kind of heating furnace, including
The furnace shell with lower openings and the flue assembly being located in furnace shell, described flue assembly includes flue
And the table that can lift in being arranged on flue, bottom the lower periphery of described flue and furnace shell between logical
Crossing lower seal assembly to seal, described flue top has flue top connecting tube, and this flue top connects
Sealed by upper black box between periphery and the furnace shell top board of pipe；Between described furnace shell inwall and flue
It is provided with the multiple heating element inserted from furnace shell top.
Further, being provided with burner hearth air inlet pipe and guide duct bottom described furnace shell, the top of furnace shell is provided with stove
Thorax exhaustor.
Further, the multiple thermometrics inserted from furnace shell top it are additionally provided with between described furnace shell inwall and flue
Element.
Further, described heating element is the reciprocal radial canal being wound around, logical between adjacent two sections of radial canals
Cross ceramic member isolation；Described temperature element is thermocouple.
Further, described upper black box is secondary seal structure, and this secondary seal structure includes company
Adapter, adaptor and gland；Described upper connecting tube bottom and flue top connecting tube upper weld, on
Connecting tube top is threaded connection with adaptor bottom, threadeds with gland in the top of adaptor；
The junction between junction, adaptor and gland between adaptor and upper connecting tube is all by switching
Head sealing gasket seals.
Further, described adaptor is cross cavity body structure, including transverse pipe and longitudinal pipe, described
Transverse pipe pressure measxurement in flue aerofluxus and flue, described longitudinal pipe is inserted into thermocouple, is used for
To the measurement of temperature in flue.
Further, described secondary seal structure also include the upper pipe joint being sequentially connected with, middle pipe joint and
Lower pipe connection, for the sealing between upper connecting tube and adaptor；
Further, described middle pipe joint top is threaded connection with Shangguan's joint bottom, middle pipe joint
Bottom is threaded connection with lower pipe connection top.
Further, between described gland and adaptor, between upper pipe joint and middle pipe joint, middle pipe connects
It is equipped with pipe joint seal ring and pressure ring between head and lower pipe connection.
Further, described lower seal assembly includes interconnective flue flange and fire door flange, flue
It is provided with between bottom flange and furnace shell between furnace shell sealing gasket, flue flange and fire door flange and is provided with flue
Sealing gasket, is provided with table sealing gasket between described fire door flange and table base plate.
The Advantageous Effects of the present invention is:
(1) heating furnace of the present invention, because being provided with sealing device at the top of furnace shell and bottom, institute are used
Can heat in the environment of sealing, it is to avoid toxicant or radioactive substance diffusion, environment is produced
Raw adverse influence；
(2) heating furnace of the present invention, is provided with burner hearth air inlet pipe, guide duct and burner hearth exhaustor, passes through
Burner hearth fast cooling, meanwhile, accelerates the cooling rate of flue, thus improves production efficiency；
(3) heating furnace of the present invention, the Quick overhaul that can realize parts is changed, and particularly can realize
Being individually replaced of electric furnace life-span bottleneck radial canal, reduces the cost of overhaul, saves the repair time；
(4) heating furnace of the present invention, can be by redistributing merit in the case of partial radiation tube failure
Rate completes heating, has good adaptability.
(5) heating furnace of the present invention, for the weak link of hot conditions lower seal, i.e. flue top
The secondary seal knot that can carry out dual-seal and pressure detecting it is provided with between connecting tube and furnace shell top board
Structure, can improve the reliability of sealing.
Accompanying drawing explanation
Fig. 1 is the main sectional view of heating furnace of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the enlarged drawing in Fig. 1 at A；
Fig. 4 is the schematic diagram after upper black box adaptor is removed；
Fig. 5 is radial canal and the structural representation of thermocouple replacing；
Fig. 6 is the structural representation that heating furnace body is changed；
Fig. 7 is the schematic diagram that table sealing gasket is changed；
Fig. 8 is the structural representation of quick cooling system.
In figure: 1-burner hearth air inlet pipe, 2-heat insulating block, 3-guide duct, 4-table 5-flue, 6-heats unit
Part, 7-burner hearth exhaustor, 8-temperature element, 9-furnace shell top board, 10-heat-insulation layer, 11-furnace shell, 12-
Furnace shell sealing gasket, 13-flue flange, 14-retaining mechanism, 15-flue sealing gasket, 16-fire door flange,
17-table sealing gasket, 18-gland, 19-adaptor, the upper pipe joint of 20-, pipe joint in 21-, under 22-
Pipe joint, the upper connecting tube of 23-, 24-pipe joint seal ring, 25-pressure ring, 26-adaptor sealing gasket, 27-
Flue top connecting tube
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in further detail.
As shown in Figure 1, 2, it is the structural representation of heating furnace of the present invention, under this heating furnace includes having
The furnace shell 11 of portion's opening and the flue assembly being located in furnace shell 11, this flue assembly includes flue 5
And the table 4 that can lift in being arranged on flue 5.This flue 5 is bell shape thin walled cavity structure,
Its top has flue top connecting tube 27, and flue top connecting tube 27 passes furnace shell top, flue
Sealed by upper black box between top connecting tube 27 and furnace shell top board 9, flue lower periphery and stove
Being sealed by lower seal assembly between bottom shell, upper black box and lower seal assembly coordinate, and make material
Can heat in the environment of airtight, it is to avoid poisonous substance or the diffusion of radioactive substance, environment is produced not
The impact of profit.Table 4 includes the cup at top, the heat insulating block 2 at middle part and the table base plate of bottom.
The multiple heating element 6 and multiple survey inserted from furnace shell top it are provided with between furnace shell 11 inwall and flue 5
Temperature element 8.The bottom of furnace shell 11 is provided with burner hearth air inlet pipe 1 and multiple guide duct 3, the top of furnace shell
Being provided with burner hearth exhaustor 7, burner hearth air inlet pipe 1, guide duct 3 and burner hearth exhaustor 7 form the fast of burner hearth
Speed cooling system, improves production efficiency.It is provided with heat-insulation layer between furnace shell 11 inwall and heating element 6
10, it is simple to ensure the temperature in flue.Furnace shell 11 is provided with retaining mechanism 14, this retaining mechanism 14
Being connected with the part that is locked arranged in chamber, for realizing the fixing of furnace shell, its structure can be movable joint
Bolt pattern.
Wherein: flue 5 is positioned in the middle part of body of heater, for heat-resisting steel under shed cavity, cavity size with set
Put and match at internal table 4.
Lower seal assembly includes flue flange 13 and fire door flange 16, the stove being arranged on flue 5 periphery
Gallbladder flange 13 and fire door flange 16 are connected by connector.Bottom flue flange 13 and furnace shell 11 it
Between be provided with furnace shell sealing gasket 12, for realizing the sealing of furnace shell, flue flange 13 and fire door flange 16
Between be provided with flue sealing gasket 15, for realizing the sealing of flue, fire door flange 16 and table base plate
It is connected, between fire door flange 16 and table base plate, is provided with table sealing gasket 17, be used for realizing table
Sealing.Furnace shell sealing gasket 12 and flue sealing gasket 15 are high temperature sealing material, can use silicon
The materials such as rubber.
Upper black box includes connecting tube 23 and adaptor 19.Upper connecting tube 23 bottom and flue top
Portion's connecting tube 27 is welded, and upper connecting tube 23 top is connected with adaptor 19 lower thread, passes through screw thread
Thrust realizes sealing, and is provided with adaptor sealing gasket 26 between upper connecting tube 23 and adaptor 19.Turn
Joint 19 is removable cross cavity body structure, and including transverse pipe and longitudinal pipe, transverse pipe is arranged for flue
Pressure measxurement in gas and flue, longitudinal pipe is inserted into thermocouple, in flue temperature measurement and
The sealing of flue.The top of adaptor 19 is provided with gland 18, and adaptor 19 is closely joined with gland 18
Closing, adaptor 19 middle and lower part is provided with pipe joint 20, middle pipe joint 21 and lower pipe connection 22, upper pipe
Joint 20 is the pipe joint structure of hollow, and its external screw thread mates with the female thread at middle pipe joint 21 top,
Middle pipe joint 21 bottom is external thread structure, mates with the female thread of lower pipe connection 22, lower pipe connection
22 bottoms are connected with furnace shell top board 9 by flange.Below respectively organize between threaded engagement and all pass through pipe joint
Sealing ring 24 and pressure ring 25 coordinate, and can form a sealing space the outside of adaptor 19, arrange
Second seals, as shown in Figure 3.
Heat-insulation layer 10 is arranged on flue 5 outside, furnace shell 11 inside, its bottom opening and flue external diameter
Size is mated, and in the middle part of minimizing, heat is lost, and outer recessed in the middle part of it, top is provided with some perforates, specification
Match with the upper connecting tube of flue 5, radial canal, burner hearth exhaustor 7, thermocouple.Insulation material
It is provided with some guide duct 3 installing holes bottom 10, mates with 3 guide ducts.The inside material of heat-insulation layer 10
Matter can be selected for alumina fibre, and outside material is soft alumina silicate fibre.
Radial canal is the reciprocal resistance wire form being wound around, and is completely cut off by ceramic member between adjacent two sections, its
Top is flange arrangement, is connected with furnace shell top board 9, and radial canal top is provided with electrode leading-out terminal, uses
In electrical connection.Each radial canal is a heating module, is provided with some groups of radial canals in furnace shell,
When a radial canal lost efficacy, other radial canals still can normally work, and completes heating.
Thermocouple is middle part thermo wires, and outside is provided with sleeve pipe, uses flange installation form to be arranged on furnace shell top
On plate 9.
Guide duct 3 is blind pipe structure, and its top-side is provided with some apertures, and during installation, aperture is towards stove
Gallbladder 5 direction.Guide duct 3 material is high temperature resistant dense material, such as pottery.
Furnace shell top board 9 is the cover plate of furnace shell, is connected with furnace shell 11 by bolt.Furnace shell top board is provided with
Some through holes, the upper connecting tube of its specification and flue, radial canal, thermocouple match, and coordinate flange
Structure, can be used for realizing the installation of above-mentioned parts and sealing.
The substitute mode of parts each to heating furnace illustrates below:
1, the maintenance of adaptor.When adaptor sealing gasket 26 is overhauled by needs, or to stove
When body overhauls, upper pipe joint 20 can be unclamped, and then rotation adaptor 19 can be by adaptor
Pull down and carry out relevant maintenance.If secondary seal structure is overhauled further, can be by middle pipe joint
21 unclamp, and take off, and can realize the maintenance to whole secondary seal structure, as shown in Figure 4.
2, radial canal and the replacing of thermocouple.Compared with the mechanical part such as furnace shell, insulation material,
The electrical equipment such as radial canal, thermocouple lost efficacy the most random, and the life-span is shorter, it is therefore desirable to the most convenient
Maintenance mode.Electric furnace of the present invention uses the version installed from top, and uses modularity
Design, only need to unclamp the screw of mounting flange during maintenance, can be by the radial canal damaged and thermocouple
Extract out from top, load new element and complete to change.As shown in Figure 5.
3, the replacing of body of heater.When the parts in body of heater go wrong, or need furnace sealing
When pad overhauls, body of heater retaining mechanism 14 can be unclamped, body of heater entirety be extracted out, as shown in Figure 6.
4, the replacing of table sealing gasket.Table sealing gasket 17 is replaced from bottom, when table drops
Time lower, table sealing gasket can be exposed, be replaced by remote overhauling mode inside chamber, such as figure
Shown in 7.
5, the realization of cooling is forced.When needs carry out forcing cooling, lead to from burner hearth air inlet 1
Enter cooling medium, the burner hearth that cooling medium is blown between flue and insulation material by guide duct 3, from
Burner hearth exhaustor 7 is discharged, and is circulated by continuous cooling medium, can quickly reduce the temperature in flue,
Reach the purpose quickly cooled down, as shown in Figure 8.
The heating furnace of the present invention is not limited to above-mentioned detailed description of the invention, and those skilled in the art are according to this
The technical scheme of invention draws other embodiment, also belongs to the technological innovation scope of the present invention.
Claims (10)
1. a heating furnace, including there is the furnace shell (11) of lower openings and being located in the flue assembly in furnace shell (11), it is characterized in that: the table (4) that described flue assembly can lift in including flue (5) and being arranged on flue (5), sealed by lower seal assembly between the lower periphery of described flue (5) and furnace shell (11) bottom, described flue (5) top has flue top connecting tube (27), is sealed by upper black box between periphery and the furnace shell top board (9) at this flue top connecting tube (27)；The multiple heating element (6) inserted from furnace shell (11) top it are provided with between described furnace shell (11) inwall and flue (5).
2. a kind of heating furnace as claimed in claim 1, is characterized in that: described furnace shell (11) bottom is provided with burner hearth air inlet pipe (1) and guide duct (3), and the top of furnace shell (11) is provided with burner hearth exhaustor (7).
3. a kind of heating furnace as claimed in claim 1 or 2, is characterized in that: be additionally provided with the multiple temperature elements (8) inserted from furnace shell (11) top between described furnace shell (11) inwall and flue (5).
4. a kind of heating furnace as claimed in claim 3, is characterized in that: described heating element (6) is the reciprocal radial canal being wound around, and is isolated by ceramic member between adjacent two sections of radial canals；Described temperature element (8) is thermocouple.
5. a kind of heating furnace as claimed in claim 1, is characterized in that: described upper black box is secondary seal structure, and this secondary seal structure includes connecting tube (23), adaptor (19) and gland (18)；Described upper connecting tube (23) bottom and flue top connecting tube (27) upper weld, upper connecting tube (23) top is threaded connection with adaptor (19) bottom, threadeds with gland (18) in the top of adaptor (19)；The junction between junction, adaptor (19) and gland (18) between adaptor (19) and upper connecting tube (23) is all sealed by adaptor sealing gasket.
6. a kind of heating furnace as claimed in claim 5, it is characterized in that: described adaptor (19) is cross cavity body structure, including transverse pipe and longitudinal pipe, the pressure measxurement in flue aerofluxus and flue of described transverse pipe, described longitudinal pipe is inserted into thermocouple, for the measurement to flue (5) interior temperature.
7. a kind of heating furnace as claimed in claim 6, it is characterized in that: described secondary seal structure also includes the upper pipe joint (20) being sequentially connected with, middle pipe joint (21) and lower pipe connection (22), for the sealing between upper connecting tube (23) and adaptor (19).
8. a kind of heating furnace as claimed in claim 7, it is characterized in that: described middle pipe joint (21) top is threaded connection with Shangguan's joint bottom, and middle pipe joint (21) bottom is threaded connection with lower pipe connection (22) top.
9. a kind of heating furnace as claimed in claim 8, is characterized in that: between described gland (18) and adaptor (19), between upper pipe joint (20) and middle pipe joint (21), be equipped with pipe joint seal ring and pressure ring between middle pipe joint (21) and lower pipe connection (22).
10. a kind of heating furnace as claimed in claim 1, it is characterized in that: described lower seal assembly includes interconnective flue flange (13) and fire door flange (16), it is provided with furnace shell sealing gasket (12) between flue flange (13) and furnace shell (11) bottom, it is provided with flue sealing gasket (15) between flue flange (13) and fire door flange (16), between described fire door flange (16) and table base plate, is provided with table sealing gasket (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224223.5A CN105865194B (en) | 2016-04-12 | 2016-04-12 | Heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224223.5A CN105865194B (en) | 2016-04-12 | 2016-04-12 | Heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105865194A true CN105865194A (en) | 2016-08-17 |
| CN105865194B CN105865194B (en) | 2020-04-03 |
Family
ID=56637118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224223.5A Active CN105865194B (en) | 2016-04-12 | 2016-04-12 | Heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105865194B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443011A (en) * | 2018-12-17 | 2019-03-08 | 上海颐柏科技股份有限公司 | A kind of electric radiation device for heat-treatment furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596526A (en) * | 1985-03-04 | 1986-06-24 | Worthington Industries, Inc. | Batch coil annealing furnace and method |
| CN101880026A (en) * | 2010-06-03 | 2010-11-10 | 苏州苏净保护气氛有限公司 | Ammonia decomposition device |
| CN102528042A (en) * | 2012-02-27 | 2012-07-04 | 宝得粉末注射成形（常熟）有限公司 | Siphon-type degreasing furnace |
| CN104990411A (en) * | 2015-07-06 | 2015-10-21 | 中国核电工程有限公司 | Heating furnace structure |
-
2016
- 2016-04-12 CN CN201610224223.5A patent/CN105865194B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596526A (en) * | 1985-03-04 | 1986-06-24 | Worthington Industries, Inc. | Batch coil annealing furnace and method |
| CN101880026A (en) * | 2010-06-03 | 2010-11-10 | 苏州苏净保护气氛有限公司 | Ammonia decomposition device |
| CN102528042A (en) * | 2012-02-27 | 2012-07-04 | 宝得粉末注射成形（常熟）有限公司 | Siphon-type degreasing furnace |
| CN104990411A (en) * | 2015-07-06 | 2015-10-21 | 中国核电工程有限公司 | Heating furnace structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443011A (en) * | 2018-12-17 | 2019-03-08 | 上海颐柏科技股份有限公司 | A kind of electric radiation device for heat-treatment furnace |
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| Publication number | Publication date |
|---|---|
| CN105865194B (en) | 2020-04-03 |
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