CN201246963Y - Explosion-proof hydrogen protection reduction heating furnace - Google Patents
Explosion-proof hydrogen protection reduction heating furnace Download PDFInfo
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- CN201246963Y CN201246963Y CNU2008200780164U CN200820078016U CN201246963Y CN 201246963 Y CN201246963 Y CN 201246963Y CN U2008200780164 U CNU2008200780164 U CN U2008200780164U CN 200820078016 U CN200820078016 U CN 200820078016U CN 201246963 Y CN201246963 Y CN 201246963Y
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Abstract
The utility model relates to an explosion-proof hydrogen-protecting reducing-heating furnace, which belongs to the technical field of heating devices, and is used to solve the problem that hydrogen-protecting heating is easy to explode. The explosion-proof hydrogen-protecting reducing-heating furnace comprises a furnace body and a heating chamber, wherein a heating element is arranged in the heating chamber, and a hydrogen pipe and an argon pipe are respectively arranged on an upper side and a lower side of the heating chamber after improving, the argon pipe is communicated with a three-way valve at the bottom of a furnace, and an air inlet pipe of the three-way valve at the bottom of a furnace is communicated with an argon tank, the argon pipe is communicated with the three-way valve on the furnace top, and the three-way valve on the furnace top is communicated with the argon tank. The explosion-proof hydrogen-protecting reducing-heating furnace can not explode and burn based on a safe gas mixture principle that no matter what proportion that hydrogen and argon are mixed, the structure of a heating furnace is improved, and hydrogen and argon are alternatively pumped into the furnace when the heating furnace is running, thereby protecting atmosphere heating. When reducing atmosphere and protecting atmosphere are combined to be done on a work-piece to heat, the danger of exploding can be effectively prevented, and the utility model simultaneously provides a set of safe and convenient all-purpose heating furnace with reducing atmosphere and protecting atmosphere for industrial production.
Description
Technical field
The utility model relates to a kind of heating furnace, the anti-explosion safety hydrogen shield particularly is provided and has the industrial heating furnace of certain restoring function, belongs to heating device technology area.
Background technology
The industry heating occupies very consequence in national economy, the heating of crystallization again of number of chemical reaction heating, Industrial Stoves heating, various ferrous materials parts heat treatment heating, the heat-agglomerating of powder metallurgy pressing part, a large amount of copper, aluminum conductor material and the heating of various other occasions all belong to the industry heating.Quite a few then need heat under protective condition in above-mentioned heating state---non-oxidation, no scaling loss, light or the reducing atmosphere that sintering quality is good even needs are certain.As a large amount of copper and aluminium alloy again the protective atmosphere heat-agglomerating etc. of crystallization heating anneal, the recrystallization annealing of cold-strip steel protective atmosphere, powder metallurgy pressing part need material-to-be-heated can not oxidization burning loss, atmosphere needs protection.The method of usually anti-oxidation, scaling loss is the protective atmosphere heating, and gases such as nitrogen, argon gas, hydrogen, carbon dioxide are the protective gas of using always, perhaps adopt heating in vacuum, and is isolated with air, non-oxidation or light heating.Wherein use hydrogen shield, welcome especially under many heating conditions, because hydrogen shield not only can prevent that oxidation also has very important reduction, make some reduction reaction smooth.But the worrying part of hydrogen protective effect is the explosive characteristic (explosion limit of hydrogen is 4% ~ 74%) of hydrogen, can both explode in very big proportion when hydrogen mixes with air, and this makes much wants to use the people of hydrogen forbidding.If want to prevent blast, then high temperature slowly must be reduced temperature, reach the degree that does not have the red heat color in the stove or do not have naked light on every side, hydrogen is discharged thoroughly, take out workpiece, this operation need take more nonproductive time, is unfavorable for bringing into play utilization rate of equipment and installations, influences the production cycle or do not allow for technological requirement.
Summary of the invention
The utility model is used for solving the defective of above-mentioned prior art and provides a kind of workpiece to heat and can effectively eliminate the explosion-proof hydrogen protection reduction heating furnace of hydrogen gas explosion danger at hydrogen reducing atmosphere.
The alleged problem of the utility model is solved by following technical scheme:
A kind of explosion-proof hydrogen protection reduction heating furnace, comprise body of heater, heating clamber in the formation, be provided with heating element heater in the heating clamber, its special feature is: the upper and lower both sides of described heating clamber are respectively equipped with hydrogen pipe and tunger tube, described tunger tube is communicated with the furnace bottom triple valve, and furnace bottom triple valve air inlet pipe is communicated with argon tanks; Described hydrogen pipe is communicated with the furnace roof triple valve, and furnace roof triple valve air inlet pipe is communicated with hydrogen gas tank.
Above-mentioned explosion-proof hydrogen protection reduction heating furnace, the interior wall liner shop layer of glass plate of described heating clamber.
Above-mentioned explosion-proof hydrogen protection reduction heating furnace is set up chamber to be heated and cooling chamber, and described chamber to be heated and cooling chamber lay respectively at body of heater heating clamber both sides, and slideway is communicated with between three Room, has identical atmosphere within three Room.
The utility model problem that heating is easily blasted at hydrogen shield is improved; it based on hydrogen and argon gas whatsoever ratio mix this safe gas mixed principle of can not blasting and burn; improve heating furnace structure; density characteristics according to hydrogen, argon gas are provided with hydrogen pipe and tunger tube up and down respectively in heating furnace; two kinds of gases alternately feed in the stove in the heating furnace work process; carry out protective atmosphere heating, when reach requirement heat time heating time till.This design selects for use two threeways, two gas, double fluid can effectively prevent the danger of blast when guard method is carried out reducing atmosphere and protective atmosphere in conjunction with heating to workpiece, for industrial production provides a cover safety, convenient, general heating stove with reproducibility, protective atmosphere.The utility model can be used for the protective atmosphere heating of common workpiece and special workpiece, and anti-oxidation heating reaches various Technologies for Heating Processing such as quenching, normalizing, tempering, deformable metal crystallization again, powder compaction product sintering, surface of the work reduction, destressing, homogenising.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of another embodiment of the utility model.
Label is expressed as follows in the accompanying drawing: 1. body of heater; 2. heating clamber; 3. heating element heater; 4. hydrogen pipe; 5. furnace roof blast pipe; 6. furnace roof triple valve; 7. furnace roof air inlet pipe; 8. workpiece; 9. furnace bottom air inlet pipe; 10. furnace bottom triple valve; 11. tunger tube; 12. furnace bottom blast pipe; 13. chamber to be heated; 14. cooling chamber; 15. slideway; 16. glass mat.
The specific embodiment
Referring to Fig. 1, the utility model comprises body of heater 1, heating clamber 2 in constituting, and is provided with heating element heater 3 in the heating clamber, and heating element heater can be heating wire, Elema or molybdenum filament and other electric heating element heating material.Be respectively equipped with hydrogen pipe 4 and tunger tube 11 in the upper and lower both sides of heating clamber, tunger tube is communicated with furnace bottom triple valve 10, and the furnace bottom triple valve is communicated with argon tanks by furnace bottom air inlet pipe 9, and another mouth of furnace bottom triple valve is communicated with furnace bottom blast pipe 12; The hydrogen pipe is communicated with furnace roof triple valve 6, and the furnace roof triple valve is communicated with hydrogen gas tank by furnace roof air inlet pipe 7, and another mouth of furnace roof triple valve is communicated with furnace roof blast pipe 5.The heating clamber insulation material is selected light heat-insulating material for use, in heating clamber wall liner shop one deck complete or through bonding glass mat 16, this glass mat has isolated gas and reflective thermal radiation double action.
The course of work of the present utility model is as follows: for cold conditions shove charge workpiece to be heated, workpiece can be placed on the movable furnace bottom, by the furnace bottom lowering or hoisting gear workpiece is sent into heating clamber heating in the stove, and open furnace bottom triple valve ar gas passage simultaneously, the argon gas that density is bigger feeds from the heating furnace bottom, treat that furnace gas is all circulated away by argon gas by furnace roof blast pipe 5, and when being full of by argon gas, close the ar gas passage of furnace bottom triple valve, open the hydrogen passage of furnace roof triple valve 6 simultaneously, the less hydrogen of density feeds from top, be in red heat state in the stove this moment, but because argon gas and hydrogen mixing, without any explosion danger.When the hydrogen that feeds from top is all replaced away argon gas by furnace bottom blast pipe 12, light hydrogen in the outlet of furnace bottom blast pipe 12, under the flow hydrogen gas state, carry out protective atmosphere and heat, when reach requirement heat time heating time till.After heating finishes, close the hydrogen passage of furnace roof triple valve, open the ar gas passage of furnace bottom triple valve, fast speed is replaced hydrogen in the stove, when furnace atmosphere all is full of by argon gas, opens furnace bottom again and takes out workpiece 8 or workpiece is carried out Quenching Treatment.
Go into stove if workpiece needs furnace temperature to reach when subscribing temperature, treat then that furnace temperature reaches when subscribing temperature workpiece is put into stove, feed argon gas and heat, treat to switch hydrogen when argon gas is full of burner hearth, carry out the protective atmosphere heating, later operating procedure is the same.
Referring to Fig. 2, Fig. 3, this is the design of another embodiment of the utility model, and it is microscler body of heater, and this heating furnace has three chambers, is communicated with by slideway 15 between three Room, has identical atmosphere within three Room.Wherein, chamber, the left side is chamber 13 to be heated, and it is to be heated in the protective atmosphere zone etc. that the part of preparing heating is introduced into this chamber; The centre is a heating clamber 2, heating clamber and structure shown in Figure 1 roughly the same, workpiece reduces heating in the protective atmosphere of this chamber; Enter the cooling chamber 14 on the right after the workpiece heating finishes, be provided with corresponding cooling device in the cooling chamber, workpiece is cooling rapidly under the cooling device effect.
Claims (3)
1. an explosion-proof hydrogen is protected the reduction heating furnace, comprise body of heater, heating clamber in the formation, be provided with heating element heater in the heating clamber, it is characterized in that: the upper and lower both sides of described heating clamber (2) are respectively equipped with hydrogen pipe (4) and tunger tube (11), described tunger tube is communicated with furnace bottom triple valve (10), and furnace bottom triple valve air inlet pipe (9) is communicated with argon tanks; Described hydrogen pipe is communicated with furnace roof triple valve (6), and furnace roof triple valve air inlet pipe (7) is communicated with hydrogen gas tank.
2. explosion-proof hydrogen protection reduction heating furnace according to claim 1 is characterized in that: the interior wall liner shop layer of glass plate (16) of described heating clamber.
3. explosion-proof hydrogen protection reduction heating furnace according to claim 1 and 2; it is characterized in that: set up chamber to be heated (13) and cooling chamber (14); described chamber to be heated and cooling chamber lay respectively at body of heater heating clamber both sides, and slideway between three Room (15) is communicated with, and has identical atmosphere within three Room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200780164U CN201246963Y (en) | 2008-07-25 | 2008-07-25 | Explosion-proof hydrogen protection reduction heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200780164U CN201246963Y (en) | 2008-07-25 | 2008-07-25 | Explosion-proof hydrogen protection reduction heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246963Y true CN201246963Y (en) | 2009-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200780164U Expired - Fee Related CN201246963Y (en) | 2008-07-25 | 2008-07-25 | Explosion-proof hydrogen protection reduction heating furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN201246963Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482136A (en) * | 2009-06-25 | 2012-05-30 | 埃斯托股份有限公司 | Fused quartz horizontal furnace and assembly |
| CN109442217A (en) * | 2018-12-17 | 2019-03-08 | 江苏丰东热技术有限公司 | It is a kind of to nitrogenize two-way feeder and the two-way air supply system of nitridation |
| CN110777242A (en) * | 2019-11-08 | 2020-02-11 | 燕山大学 | Oxidation-reduction protection device of stainless steel tube heat treatment furnace |
-
2008
- 2008-07-25 CN CNU2008200780164U patent/CN201246963Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482136A (en) * | 2009-06-25 | 2012-05-30 | 埃斯托股份有限公司 | Fused quartz horizontal furnace and assembly |
| CN102482136B (en) * | 2009-06-25 | 2014-11-26 | 埃斯托股份有限公司 | Fused quartz horizontal furnace and assembly |
| CN109442217A (en) * | 2018-12-17 | 2019-03-08 | 江苏丰东热技术有限公司 | It is a kind of to nitrogenize two-way feeder and the two-way air supply system of nitridation |
| CN110777242A (en) * | 2019-11-08 | 2020-02-11 | 燕山大学 | Oxidation-reduction protection device of stainless steel tube heat treatment furnace |
| CN110777242B (en) * | 2019-11-08 | 2021-06-11 | 燕山大学 | Oxidation-reduction protection device of stainless steel tube heat treatment furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20110725 |