CN102031359A - Total hydrogen heat treatment furnace for nuclear-class U-shaped pipes - Google Patents
Total hydrogen heat treatment furnace for nuclear-class U-shaped pipes Download PDFInfo
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- CN102031359A CN102031359A CN 201010569047 CN201010569047A CN102031359A CN 102031359 A CN102031359 A CN 102031359A CN 201010569047 CN201010569047 CN 201010569047 CN 201010569047 A CN201010569047 A CN 201010569047A CN 102031359 A CN102031359 A CN 102031359A
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Abstract
The invention relates to a heat treatment furnace for nuclear-class U-shaped pipes, which comprises a furnace body with a feeding hole and a discharge hole and a transmission device for transmitting the U-shaped pipes, wherein the furnace is provided with a sealed preheating channel, a heating chamber with a complete hydrogen atmosphere, a jet-flow cooling chamber and a cooling channel which are arranged sequentially in the direction from the feeding hole to the discharge hole; the sum of the length of the preheating channel and the length of the heating chamber is more than the length of the U-shaped pipe; and the length of the cooling channel is more than that of the U-shaped pipe. In the heat treatment furnace, the length of the preheating channel and the length of the discharge cooling channel are designed reasonably, after steel pipes enter the furnace, internal and external temperatures of pipe bodies rise, gas in the pipes expands, the inside of the furnace is in a positive pressure, and the gas in the pipes exhausts out of the furnace smoothly; and when pipe heads pass through the heating chamber to enter the cooling channel, the internal and external temperature of pipe bodies drop, the gas contracts, and pipe tails are in the negative pressure and enter the seal preheating channel, so the phenomenon that air is absorbed into the pipes inversely due to exposure of the pipe tails to the outside of the furnace does not occur, and the stability of the protective gas in the furnace is improved.
Description
Technical field
The present invention relates to a kind of Equipment for Heating Processing, particularly a kind of nuclear level U type pipe perhydro heat treatment furnace.
Background technology
Hydrogen furnace claims hydrogen-burning stove again, is with logical hydrogen or hydrogen, nitrogen mixture gas (hydrogen content＞5%) heating installation as protective atmosphere.The perhydro stove promptly refers to the process furnace of 100% hydrogen as protective atmosphere.At present, hydrogen furnace has vertical and horizontal two kinds.Heating element adopts molybdenum filament (fusing point of molybdenum is 2630 ℃) usually, and shell is a metal, keeps resistance to air loss good.Kiln furnitures are used molybdenum boat always, but continuous production, efficient height.Vertical hydrogen furnace and horizontal similar, floor space is less, is applicable to small serial production.Hydrogen furnace can be used for metal parts annealing that ceramic post sintering or metallization, soldering, the sealing-in of glass part use and purification etc.Also can be used as the sintering of powder metallurgy and semiconductor alloy etc.
In the prior art, nuclear level U type pipe perhydro heat treatment furnace adopts the continuous furnace structure, mainly comprises body of heater with opening for feed and discharge port and the transmission mechanism that is used to carry pipe fitting.Described body of heater has the sealing preheating channel that the direction to discharge port is arranged in order from described opening for feed, heating chamber, jet flow cooling room and the cooling channel of perhydro gas atmosphere.Tubular workpiece is when passing through the different zones of stove, and along with the temperature variation of different zones, the gas in the pipe presents the positive and negative pressure wave phenomenon, influences the stability of shielding gas in the stove.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of improved nuclear level U type pipe perhydro heat treatment furnace is provided.
For solving above technical problem, the present invention takes following technical scheme:
A kind of perhydro heat treatment furnace, it comprises body of heater with opening for feed and discharge port and the transmission mechanism that is used to transmit U type pipe, described body of heater has the sealing preheating channel that the direction to discharge port is arranged in order from described opening for feed, heating chamber, jet flow cooling room and the cooling channel of perhydro gas atmosphere, the length sum of the length of described preheating channel and heating chamber is greater than the length of steel pipe to be processed, and the length of cooling channel is greater than the length of steel pipe to be processed.
Because the utilization of technique scheme, the present invention compared with prior art has following advantage:
The present invention is by to the appropriate design of preheating channel and discharging cooling channel length, in steel pipe enters stove after, the body internal and external temperature rises; gas expansion in the pipe is malleation in the stove, gas is discharged outside stove smoothly in the pipe; when tube head passes through heating chamber; when entering the cooling channel, the pipe internal and external temperature descends contraction of gas; the pipe tail is negative pressure; manage tail entered the sealing preheating channel this moment, can not cause that outward air falls phenomenon in the tail pipe because of the pipe tail is exposed to stove, improved the stability of shielding gas in the stove.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Wherein: 1, body of heater; 10, opening for feed; 11, discharge port; 12, sealing preheating channel; 13, heating chamber; 14, jet flow cooling room; 15, cooling channel; 2, feed end roller platform; 3, feed end network chain transport unit; 4, the online swabbing pig of network chain; 5, discharge end roller platform.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing the present invention is further described, but the invention is not restricted to this embodiment.
As shown in Figure 1, the nuclear level U type pipe perhydro heat treatment furnace according to present embodiment comprises body of heater 1, feed end roller platform 2, feed end network chain transport unit 3, the online swabbing pig 4 of network chain, discharge end roller platform 5 and the Controlling System (not shown) with opening for feed 10 and discharge port 11.Described body of heater 1 has the sealing preheating channel 12 that the direction towards discharge port 11 is arranged in order from opening for feed 10, heating chamber 13, jet flow cooling room 14 and the cooling channel 15 of perhydro gas atmosphere.Wherein the length sum of the length of preheating channel 12 and heating chamber 13 is greater than the length of steel pipe to be processed, and the length of cooling channel 15 is greater than the length of steel pipe to be processed.
Heat treatment furnace with this structure, in steel pipe enters stove after, the body internal and external temperature rises; gas expansion in the pipe is malleation in the stove, gas is discharged outside stove smoothly in the pipe; when tube head passes through heating chamber; when entering the cooling channel, the pipe internal and external temperature descends contraction of gas; the pipe tail is negative pressure; manage tail entered the sealing preheating channel this moment, can not cause that outward air falls phenomenon in the tail pipe because of the pipe tail is exposed to stove, improved the stability of shielding gas in the stove.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (1)
1. perhydro heat treatment furnace, comprise have opening for feed (10) and the body of heater (1) of discharge port (11) and the transmission mechanism that is used to transmit steel pipe to be processed, described body of heater (1) has the sealing preheating channel (12) that the direction to discharge port (11) is arranged in order from described opening for feed (10), the heating chamber (13) of perhydro gas atmosphere, jet flow cooling room (14) and cooling channel (15), it is characterized in that: the length sum of the length of described preheating channel (12) and described heating chamber (13) is greater than the length of steel pipe to be processed, and the length of described cooling channel (15) is greater than the length of steel pipe to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010569047 CN102031359A (en) | 2010-12-02 | 2010-12-02 | Total hydrogen heat treatment furnace for nuclear-class U-shaped pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010569047 CN102031359A (en) | 2010-12-02 | 2010-12-02 | Total hydrogen heat treatment furnace for nuclear-class U-shaped pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102031359A true CN102031359A (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010569047 Pending CN102031359A (en) | 2010-12-02 | 2010-12-02 | Total hydrogen heat treatment furnace for nuclear-class U-shaped pipes |
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| Country | Link |
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| CN (1) | CN102031359A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51107207A (en) * | 1975-03-19 | 1976-09-22 | Furukawa Electric Co Ltd | Kinzokukanno kanetsushorihoho |
| US4504042A (en) * | 1982-02-16 | 1985-03-12 | Kruppert Enterprises, Inc. | Apparatus for heat treating steel |
| CN101228285A (en) * | 2005-07-25 | 2008-07-23 | 住友金属工业株式会社 | Continuous heat treatment stove, metal tube using the same and thermal treatment method |
| CN201284352Y (en) * | 2008-09-28 | 2009-08-05 | 黄冈市华窑中洲窑炉有限公司 | Roller hearth flue gas shielding gas atmosphere steel pipe heat processing furnace |
-
2010
- 2010-12-02 CN CN 201010569047 patent/CN102031359A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51107207A (en) * | 1975-03-19 | 1976-09-22 | Furukawa Electric Co Ltd | Kinzokukanno kanetsushorihoho |
| US4504042A (en) * | 1982-02-16 | 1985-03-12 | Kruppert Enterprises, Inc. | Apparatus for heat treating steel |
| CN101228285A (en) * | 2005-07-25 | 2008-07-23 | 住友金属工业株式会社 | Continuous heat treatment stove, metal tube using the same and thermal treatment method |
| CN201284352Y (en) * | 2008-09-28 | 2009-08-05 | 黄冈市华窑中洲窑炉有限公司 | Roller hearth flue gas shielding gas atmosphere steel pipe heat processing furnace |
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Application publication date: 20110427 |