CN100475983C - Bright annealing furnace - Google Patents
Bright annealing furnace Download PDFInfo
- Publication number
- CN100475983C CN100475983C CNB2007101313785A CN200710131378A CN100475983C CN 100475983 C CN100475983 C CN 100475983C CN B2007101313785 A CNB2007101313785 A CN B2007101313785A CN 200710131378 A CN200710131378 A CN 200710131378A CN 100475983 C CN100475983 C CN 100475983C
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- heating chamber
- air
- chamber
- district
- inlet
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Abstract
The present invention relates to a bright annealing oven which includes a heating chamber for heating the workpiece to a target annealing temperature, a cooling chamber for cooling the heated workpiece to a target low temperature. The heating chamber and the cooling chamber are both filled with protecting gas, and the pressure of the protecting gas is more than the atmospheric pressure. The heating chamber has an inlet and an outlet, and is arranged with an air obstructing area on the site of the inlet, the length of the air obstructing area is more than or equal to 2 meters, and the air obstructing area can prevent air from entering into the heating chamber. As the air obstructing area whose length is more than or equal to 2 meters is arranged, even draught passes through the chamber arranged with the annealing oven, the intensity of the draught cannot make draught pass through the air obstructing area. The arrangement of the air obstructing area can prevent the dangerous accident of explosion occurring in the heating chamber, and the life safety of the operation personnel is ensured simultaneously.
Description
Technical field
The present invention relates to a kind of being used for, especially design and a kind of metal tubes such as copper pipe, stainless steel tube are carried out the annealed bright annealing oven hardware annealed bright annealing oven.
Background technology
At present, bright annealing oven is made up of following several parts mostly: (1) heating chamber, workpiece is heated to the annealing temperature of requirement and constantly forwards moves herein, for example: for copper pipe roughly about 800 degree, for stainless steel tube greatly about about 1100 degree; (2) cooling room is cooled off and is reached preset temp again gradually by the workpiece of crossing at the heating chamber internal heating herein, for example about 80 degree; The workpiece that comes out from cooling room is continued forwards to move by streamline again.All be full of pressure greater than atmospheric shielding gas (being generally the mixed gas of hydrogen and nitrogen) when these above-mentioned heating chambers and the work of cooling room inherence; usually when the design annealing furnace, be not easy to enter in the heating chamber for feasible extraneous air; and and heating chamber in shielding gas (hydrogen is inflammable gas) under high temperature (annealing temperature), blast; in the ingress of heating chamber (the easy entry site of air) sealing element is set; these sealing elements are one section less than 0.5 rice grain pattern road normally; like this; air is as entering in the heating chamber; at first to pass through this section passage; and since in the passage also abrim greater than an atmospheric shielding gas and enough length is arranged; owing to the cause of pressure difference, air seldom can enter in the heating chamber like this.
Above-mentioned this situation makes annealing furnace under normal operation; the fine generation incident of avoiding exploding; but in actual production; because it can not be airtight room that the room of annealing furnace is installed; in the room, there are draught or strong wind to blow over so unavoidably; at this moment; because the transient pressure of draught is very big; the pressure that surpasses the shielding gas in the passage sometimes; and because the length of passage is too short, like this, the air in the draught still can flow through above-mentioned passage; flow to heating chamber at last, set off an explosion.
Summary of the invention
At the problems referred to above, the ingress that the purpose of this invention is to provide a kind of heating chamber has length is cut off the district more than or equal to 2 meters air bright annealing oven.
In order to reach above purpose; the scheme that the present invention adopts is: a kind of bright annealing oven; comprise a heating chamber that is used for workpiece is heated to predetermined annealing temperature; one is used for the cooling room of the work-piece cools after the heating to the predetermined low temperature level degree; described heating chamber and described cooling room all are full of shielding gas; and the pressure of this shielding gas is greater than barometric point; described heating chamber has an entrance and exit; described heating chamber also is provided with air and cuts off the district being positioned at the ingress; this air cuts off section length more than or equal to 2 meters, and this air cuts off the district and can stop air admission to arrive described heating chamber.
Described air cuts off the district and comprises a housing with entrance and exit, and the outlet of described housing and the hermetic seal connection mutually of the inlet of described heating chamber also are full of shielding gas in the described housing, and the pressure of this shielding gas is also greater than barometric point.
The top of described housing offers opening, and the phase hermetic seal is combined with a lid on the described opening.
Described housing offers groove around the oral area that is positioned at described opening, described lid is provided with the protuberance that matches with described groove, is filled with quartz sand between described groove and the described protuberance.
Isolated between described heating chamber and the described cooling room by an insulated chamber is set, the two ends of this insulated chamber respectively with the inlet of the outlet of described heating chamber and described cooling room mutually hermetic seal be connected.
Described air cuts off the preferred length in district more than or equal to 3 meters.
Enforcement by technique scheme; obtained following beneficial effect by the present invention: cut off the district by the air that is provided with more than or equal to 2m; even in the room that annealing furnace is installed, have draught to blow over like this; its intensity can not make it be full of the 2 meters long air partition district of pressure greater than the shielding gas of barometric point by inside; so cut off the district by this kind air is set; prevented that effectively the hazard event of blasting in the heating chamber from taking place, and also makes operator's life security obtain guarantee simultaneously.
Description of drawings
Accompanying drawing 1 is the structural representation of bright annealing oven of the present invention;
Accompanying drawing 2 cuts off the enlarged diagram (being full of shielding gas in each chamber) in district for air of the present invention;
Accompanying drawing 3 is the main sectional view that air of the present invention cuts off the district;
Wherein: 1, travelling belt; 2, motor; 3, power wheel; 4, running roller; 5, heating chamber; 6, cooling room; 7, air cuts off the district; 8, housing; 9, lid; 10, opening; 11, groove; 12, protuberance; 13, inlet; 14, outlet; 15, preheating chamber; 16, insulated chamber; 17, heating tube; 18, support.
Embodiment
A kind of bright annealing oven shown in Fig. 1～2, it is arranged on the streamline, and this streamline can drive the workpiece various piece of annealed stove successively.
In the present embodiment, streamline comprises support 18, be arranged on two power wheels 3 at support 18 two ends, be set in two travelling belts 1 on the power wheel 3, two power wheels 3 are driven by two motors 2 respectively, because in the present embodiment, travelling belt 1 will be through the high-temperature zone, like this, travelling belt 1 is selected for use by resistant to elevated temperatures metal net formula travelling belt 1.
In order to make travelling belt 1 when workpiece being sent into annealing furnace and taking annealing furnace out of, can reduce friction, be provided with several running rollers 4 on the forward-and-rearward support 18 of whole annealing furnace being positioned at, running roller 4 is tangent with the lower surface of travelling belt 1, and running roller 4 can reduce the frictional force of corresponding position.
Whole annealing furnace comprises that from back to front preheating chamber 15, air cut off district 7, heating chamber 5, insulated chamber 16, cooling room 6, and wherein, the workpiece movement direction is a direction from back to front.
Workpiece transmits from travelling belt 1 and at first arrives preheating chamber 15, and preheating chamber 15 can at first carry out preheating with workpiece, prepares against
Heating chamber 5; be used for workpiece is heated to predetermined annealing temperature; be full of shielding gas in it, and the pressure of this shielding gas is greater than barometric point, shielding gas is generally the mixed gas of hydrogen and nitrogen; heating chamber 5 has an inlet 51 and outlet 52; this is provided with heating tube 17 in the heating chamber 5, can make the temperature in the heating chamber 5 reach default annealing temperature after heating tube 17 heating, certainly; heating chamber 5 also is provided with a lot of lagging materials in order to prevent power loss on its outer wall.
Air cuts off district 7; it is between preheating chamber 15 and heating chamber 5; mainly comprise a housing 8 with inlet 13 and outlet 14; the outlet 14 of housing 8 and the hermetic seal connection mutually of the inlet 51 of heating chamber 5; also be full of the shielding gas as above-mentioned kind in the housing 8, the pressure of this shielding gas is also greater than barometric point.Usually the length in this air partition district 7 is more than or equal to 2 meters, and preferred more than 3 meters, this air cuts off district 7 and can stop air admission to heating chamber 5.
Because heating chamber 5 is in secular use, the inside can stay a lot of solid residues, and therefore, heating chamber 5 inside will regularly be swept.And owing to be provided with the air partition district that length surpasses 2 meters, and the inlet 51 of housing 8 and heating chamber 5 hermetic seal mutually connects, to disassemble very after such two connections and be not easy, therefore sweep will the entering in the heating chamber 5 of personnel Geng Yi in order to make, the top that cuts off the housing 8 in district 7 at air offers the opening 10 that can conveniently sweep personnel's turnover, the phase hermetic seal is combined with a lid 9 on the opening 10, annealing furnace quit work after for some time like this, open lid 9, the personnel that sweep just can enter heating chamber 5 very easily and clean.In order to make that opening 10 and lid 9 on the housing can hermetic seal after cooperating, when the two is set, the oral area that is positioned at opening 10 at housing 8 is offered groove 11 on every side, the protuberance 12 that matches with described groove 11 is set on lid 9, groove 11 is with after protuberance 12 cooperates, between has recharged quartz sand, and like this, opening 10 place's air of offering on housing 8 just can not enter in the housing 8.
Cooling room 6 is used for the work-piece cools behind heating chamber 5 internal heating to the predetermined low temperature level degree, and cooling room 6 also is full of shielding gas, and the pressure of this shielding gas is greater than barometric point.
Isolated between heating chamber 5 and the cooling room 6 by an insulated chamber 16 is set, the two ends of this insulated chamber 16 respectively with the inlet of the outlet 52 of heating chamber 5 and cooling room 6 mutually hermetic seal be connected, this section insulated chamber 16 is set makes the heat in the heating chamber 5 be not easy to be delivered in the cooling room 6 with refrigerating function, reduced power loss.
Claims (5)
1, a kind of bright annealing oven, comprise a heating chamber (5) that is used for workpiece is heated to predetermined annealing temperature, one is used for the cooling room (6) of the work-piece cools after the heating to the predetermined low temperature level degree, described heating chamber (5) and described cooling room (6) all are full of shielding gas, and the pressure of this shielding gas is greater than barometric point, described heating chamber (5) has an inlet (51) and outlet (52), it is characterized in that: described heating chamber (5) is located also to be provided with air and is cut off district (7) being positioned at inlet (51), this air cuts off district's (7) length more than or equal to 2 meters, and this air cuts off district (7) and can stop air admission to arrive described heating chamber (5); Isolated between described heating chamber (5) and the described cooling room (6) by an insulated chamber (16) is set, the two ends of this insulated chamber (16) respectively with the inlet of the outlet (52) of described heating chamber (5) and described cooling room (6) mutually hermetic seal be connected.
2, bright annealing oven according to claim 1; it is characterized in that: described air cuts off district (7) and comprises a housing (8) with inlet (13) and outlet (14); the outlet (82) of described housing (8) and the hermetic seal connection mutually of the inlet (51) of described heating chamber (5); described housing also is full of shielding gas in (8), and the pressure of this shielding gas is also greater than barometric point.
3, bright annealing oven according to claim 2 is characterized in that: the top of described housing (8) offers opening (10), and what described opening (10) was gone up the phase hermetic seal is combined with a lid (9).
4, bright annealing oven according to claim 3, it is characterized in that: described housing (8) offers groove (11) around the oral area that is positioned at described opening (10), described lid (9) is provided with the protuberance (12) that matches with described groove (11), is filled with quartz sand between described groove (11) and the described protuberance (12).
5, bright annealing oven according to claim 1 is characterized in that: described air cuts off the length in district (7) more than or equal to 3 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101313785A CN100475983C (en) | 2007-08-29 | 2007-08-29 | Bright annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101313785A CN100475983C (en) | 2007-08-29 | 2007-08-29 | Bright annealing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101117657A CN101117657A (en) | 2008-02-06 |
| CN100475983C true CN100475983C (en) | 2009-04-08 |
Family
ID=39053915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101313785A Expired - Fee Related CN100475983C (en) | 2007-08-29 | 2007-08-29 | Bright annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100475983C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100577825C (en) * | 2008-05-06 | 2010-01-06 | 浙江海亮股份有限公司 | Direct combustion type metallic tube bright heat treatment furnace |
| CN101363071B (en) * | 2008-09-27 | 2010-06-16 | 杭州金舟电炉有限公司 | Brilliant isothermal normalizing production system |
| CN104795469A (en) * | 2015-04-25 | 2015-07-22 | 北京金晟阳光科技有限公司 | Roller-way-type solar cell irradiation annealing furnace |
| CN106435124A (en) * | 2016-12-22 | 2017-02-22 | 广州永大不锈钢有限公司 | Technique for producing shining stainless steel pipe |
| CN108486344B (en) * | 2018-04-23 | 2020-06-19 | 唐山润泰机械有限公司 | Stainless steel annealing furnace convenient to conveying and annealing |
| CN109413780B (en) * | 2018-10-16 | 2022-02-25 | 安徽苏立科技股份有限公司 | Processing technology of electric heating tube of tide-free water heater |
| CN109518105B (en) * | 2018-12-04 | 2020-08-21 | 贵溪骏达特种铜材有限公司 | Cooling equipment for special copper bar smelting and forming |
-
2007
- 2007-08-29 CN CNB2007101313785A patent/CN100475983C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101117657A (en) | 2008-02-06 |
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