CN102051458A - Waste gas protection system for thermal treatment furnace and control method - Google Patents
Waste gas protection system for thermal treatment furnace and control method Download PDFInfo
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- CN102051458A CN102051458A CN 201010575828 CN201010575828A CN102051458A CN 102051458 A CN102051458 A CN 102051458A CN 201010575828 CN201010575828 CN 201010575828 CN 201010575828 A CN201010575828 A CN 201010575828A CN 102051458 A CN102051458 A CN 102051458A
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Abstract
The invention relates to a waste gas protection system for a thermal treatment furnace and a control method. The system comprises a furnace body and a feeding table, an air displacement chamber is formed between the inlet of the furnace body and the feeding table, a No.1 door is arranged between the air displacement chamber and the feeding table, and a No.2 door is arranged between the air displacement chamber and the inlet of the furnace body; a fuel gas radiation pipe in the furnace body is connected with the input end of a fourth valve through an exhaust pipe, one path of the output end of the fourth valve is communicated with a burner waste gas exhaust pipe through a first valve, and the other path of the output end of the fourth valve is communicated with the cavity of the air displacement chamber through a second valve; and the burner waste gas exhaust pipe is communicated with the cavity of the air displacement chamber through a third valve, the system is provided with a blower, and the output port of the blower is arranged in the burner waste gas exhaust pipe. The system has the advantages that: a vacuum chamber is replaced by using the air displacement chamber, and the air in the air displacement chamber is displaced by using CO2 serving as a main component of the waste gas, so the air entering the furnace is reduced, and stability of furnace atmosphere is realized.
Description
Technical field
The present invention relates to the heat treatment furnace field, especially a kind of waste gas securing system and control method that is used for heat treatment furnace.
Background technology
In the protective atmosphere Equipment for Heating Processing, adopt high pure nitrogen as shielding gas, process furnace has good sealing property.Stable for the purity that guarantees protective atmosphere in the stove and furnace pressure; in charging fire door and discharging fire door and body of heater junction, be provided with the vacuum lock air chamber for this reason, allow charging and discharging in vacuum chamber, stop as transition; after forvacuum charged into nitrogen again, the annealing part can advance stove or come out of the stove.The deficiency of its structure is: the nitrogen consumption rate of vacuum chamber is bigger, and power consumption is bigger during use, and manufacturing cost and use cost is higher.
Summary of the invention
Purpose of the present invention is just in order to overcome the deficiency of above-mentioned technology, and a kind of waste gas securing system and control method that is used for heat treatment furnace is provided.
The present invention solves the technical scheme that its technical problem adopts: this waste gas securing system that is used for heat treatment furnace, comprise body of heater and loading bay, between the import of body of heater and loading bay, be provided with the air displacement chamber, be provided with door between air displacement chamber and the loading bay No. one, be provided with door between the import of air displacement chamber and body of heater No. two; Be connected by the input terminus of vapor pipe at the intravital gas fired radiant tubes of stove with the 4th valve, the output terminal of the 4th valve is leaded up to first valve and is connected with the burner exhaust pipe, and another road of the output terminal of the 4th valve is by the intracavity inter-connection of second valve and air displacement chamber; The burner exhaust pipe is provided with gas blower by the intracavity inter-connection of the 3rd valve and air displacement chamber, and its delivery port is installed in the burner exhaust pipe.
As preferably, the gas fired radiant tubes of the inherent heating chamber part of described body of heater is connected by the input terminus of vapor pipe with the 4th valve.
As preferably, described gas fired radiant tubes is divided into two groups, one group of top position that is arranged on inboard wall of furnace body, and another group is arranged on the lower position of inboard wall of furnace body.
The control method that is used for the waste gas securing system of heat treatment furnace of the present invention, step is as follows:
1, after the charging of air displacement chamber, closes door No. one; First valve closes, second valve and the 3rd valve opening start gas blower; The 4th valve is transferred to burner energy trouble-free burning, and waste gas enters the air displacement chamber air is changed;
2, the charging signal is arranged in the body of heater after, second valve and the 3rd valve closes, first valve open; Open door No. two, charging in body of heater;
3, after charging finishes in the body of heater, close door No. two, open a door and carry the next batch biscuit to the air displacement chamber;
4, repeating step 1,2 and 3.
The effect that the present invention is useful is: substitute vacuum chamber with the air displacement chamber, having utilized the waste gas major ingredient is CO
2Air in the displaced air displacement chamber reduces in the air admission stove, realizes the stable of furnace atmosphere.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a principle of work synoptic diagram of the present invention.
Description of reference numerals: body of heater 1, air displacement chamber 2, gas fired radiant tubes 3, vapor pipe 4, the first valves 5, the second valves 6,9, No. two doors 10 of 8, numbers doors of the 3rd valve 7, the four valves, gas blower 11, burner exhaust pipe 12, fuel gas inlet 13, air intlet 14, loading bay 15, heating chamber 16.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As depicted in figs. 1 and 2, this waste gas securing system that is used for heat treatment furnace, comprise body of heater 1 and loading bay 15, between the import of body of heater 1 and loading bay 15, be provided with air displacement chamber 2, be provided with No. one door 9 between air displacement chamber 2 and the loading bay 15, be provided with No. two door 10 between the import of air displacement chamber 2 and body of heater 1; Gas fired radiant tubes 3 in heating chamber 16 parts in body of heater 1 is connected by the input terminus of vapor pipe 4 with the 4th valve 8, gas fired radiant tubes 3 comprises fuel gas inlet 13 and air intlet 14, present embodiment is divided into two groups, one group of top position that is arranged on body of heater 1 inwall, another group is arranged on the lower position of body of heater 1 inwall.The output terminal of the 4th valve 8 is leaded up to first valve 5 and is connected with burner exhaust pipe 12, and another road of the output terminal of the 4th valve 8 is by the intracavity inter-connection of second valve 6 with air displacement chamber 2; Burner exhaust pipe 12 is provided with gas blower 11 by the intracavity inter-connection of the 3rd valve 7 with air displacement chamber 2, and its delivery port is installed in the burner exhaust pipe 12.
The control method that is used for the waste gas securing system of heat treatment furnace of the present invention, step is as follows:
1, after 2 chargings of air displacement chamber, closes door 9 No. one; First valve 5 is closed, and second valve 6 and the 3rd valve 7 are opened, and start gas blower 11; The 4th valve 8 is transferred to burner can trouble-free burning, and waste gas enters air displacement chamber 2 air is changed about 1.4 hours of time swap;
2, in the body of heater 1 the charging signal is arranged after, second valve 6 and the 3rd valve 7 are closed, first valve 5 is opened; Open door 10 No. two, charging in body of heater 1;
3, after charging finishes in the body of heater 1, close door 10 No. two, open a door 9 and carry the next batch biscuit to air displacement chamber 2;
4, repeating step 1,2 and 3.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (4)
1. waste gas securing system that is used for heat treatment furnace, comprise body of heater (1) and loading bay (15), it is characterized in that: between the import of body of heater (1) and loading bay (15), be provided with air displacement chamber (2), be provided with a door (9) between air displacement chamber (2) and the loading bay (15), be provided with No. two doors (10) between the import of air displacement chamber (2) and body of heater (1); Gas fired radiant tubes (3) in body of heater (1) is connected by the input terminus of vapor pipe (4) with the 4th valve (8), the output terminal of the 4th valve (8) is leaded up to first valve (5) and is connected with burner exhaust pipe (12), and another road of output terminal of the 4th valve (8) is by the intracavity inter-connection of second valve (6) with air displacement chamber (2); Burner exhaust pipe (12) is provided with gas blower (11) by the intracavity inter-connection of the 3rd valve (7) with air displacement chamber (2), and its delivery port is installed in the burner exhaust pipe (12).
2. the waste gas securing system that is used for heat treatment furnace according to claim 1 is characterized in that: the gas fired radiant tubes (3) of the inherent heating chamber of described body of heater (1) (16) part is connected by the input terminus of vapor pipe (4) with the 4th valve (8).
3. the waste gas securing system that is used for heat treatment furnace according to claim 1 and 2 is characterized in that: described gas fired radiant tubes (3) is divided into two groups, one group of top position that is arranged on body of heater (1) inwall, and another group is arranged on the lower position of body of heater (1) inwall.
4. one kind is adopted the control method that is used for the waste gas securing system of heat treatment furnace as claimed in claim 1, and it is characterized in that: step is as follows:
(1), after the charging of air displacement chamber (2), closes a door (9); First valve (5) is closed, and second valve (6) and the 3rd valve (7) are opened, and starts gas blower (11); The 4th valve (8) is transferred to burner energy trouble-free burning, and waste gas enters air displacement chamber (2) air is changed;
(2), the charging signal is arranged in the body of heater (1) after, second valve (6) and the 3rd valve (7) are closed, first valve (5) is opened; Open No. two doors (10), charging in body of heater (1);
(3), after the interior charging of body of heater (1) finishes, close No. two doors (10), open a door (9) and carry the next batch biscuit to air displacement chamber (2);
(4), repeating step (1), (2) and (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010575828A CN102051458B (en) | 2010-11-26 | 2010-11-26 | Waste gas protection system for thermal treatment furnace and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010575828A CN102051458B (en) | 2010-11-26 | 2010-11-26 | Waste gas protection system for thermal treatment furnace and control method |
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| Publication Number | Publication Date |
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| CN102051458A true CN102051458A (en) | 2011-05-11 |
| CN102051458B CN102051458B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010575828A Active CN102051458B (en) | 2010-11-26 | 2010-11-26 | Waste gas protection system for thermal treatment furnace and control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589294A (en) * | 2012-04-09 | 2012-07-18 | 浙江科奥陶业有限公司 | Gate device of atmosphere protecting furnace |
| CN109458837A (en) * | 2018-12-25 | 2019-03-12 | 苏州博涛机电设备有限公司 | A kind of full automatic high efficiency roller-way furnace apparatus |
| CN111059892A (en) * | 2019-12-17 | 2020-04-24 | 湖南金炉科技股份有限公司 | Continuous graphitizing furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663895Y (en) * | 2003-11-20 | 2004-12-15 | 佳木斯电机股份有限公司 | Oxidation oven |
| US20050012254A1 (en) * | 2003-07-18 | 2005-01-20 | Hul-Chun Hsu | Annealing apparatus |
| CN201883115U (en) * | 2010-11-26 | 2011-06-29 | 杭州金舟电炉有限公司 | Waste gas protection system for heat treatment furnace |
-
2010
- 2010-11-26 CN CN201010575828A patent/CN102051458B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050012254A1 (en) * | 2003-07-18 | 2005-01-20 | Hul-Chun Hsu | Annealing apparatus |
| CN2663895Y (en) * | 2003-11-20 | 2004-12-15 | 佳木斯电机股份有限公司 | Oxidation oven |
| CN201883115U (en) * | 2010-11-26 | 2011-06-29 | 杭州金舟电炉有限公司 | Waste gas protection system for heat treatment furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589294A (en) * | 2012-04-09 | 2012-07-18 | 浙江科奥陶业有限公司 | Gate device of atmosphere protecting furnace |
| CN109458837A (en) * | 2018-12-25 | 2019-03-12 | 苏州博涛机电设备有限公司 | A kind of full automatic high efficiency roller-way furnace apparatus |
| CN111059892A (en) * | 2019-12-17 | 2020-04-24 | 湖南金炉科技股份有限公司 | Continuous graphitizing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102051458B (en) | 2012-10-03 |
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Owner name: JINZHOU TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HANGZHOU JINZHOU ELECTRIC FURNACE CO., LTD. Effective date: 20111101 |
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Owner name: HANGZHOU JINZHOU TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: JINZHOU TECHNOLOGY CO., LTD. Effective date: 20140506 |
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Effective date of registration: 20140506 Address after: Yuhang District of Hangzhou City, Zhejiang province 311113 Liangzhu Street Moganshan Road No. 2039 Patentee after: Hangzhou Jinzhou Technology Co., Ltd. Address before: 311113 Liangzhu Industrial Development Zone, Yuhang District, Zhejiang, Hangzhou Patentee before: JINZHOU TECHNOLOGY CO., INC. |