CN101900359A - Automatic pressure control device for gas furnace pressure - Google Patents

Automatic pressure control device for gas furnace pressure Download PDF

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Publication number
CN101900359A
CN101900359A CN 201010274421 CN201010274421A CN101900359A CN 101900359 A CN101900359 A CN 101900359A CN 201010274421 CN201010274421 CN 201010274421 CN 201010274421 A CN201010274421 A CN 201010274421A CN 101900359 A CN101900359 A CN 101900359A
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China
Prior art keywords
gas
gas furnace
air
furnace
pressure
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CN 201010274421
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Chinese (zh)
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CN101900359B (en
Inventor
张德刚
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Wuxi Sunlit Science and Technology Co., Ltd.
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WUXI SHENGLIDA MECHANICAL ENGINEERING Co Ltd
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Priority to CN2010102744215A priority Critical patent/CN101900359B/en
Publication of CN101900359A publication Critical patent/CN101900359A/en
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Abstract

The invention relates to an automatic pressure control device for gas furnace pressure. The automatic pressure control device comprises a gas furnace and a chimney positioned at one end of the gas furnace, wherein an air header pipe is arranged on the gas furnace; one end of the air header pipe corresponding to the adjacent chimney is provided with communicated air blowpipes; an automatic valve is arranged between the air blowpipe and the air header pipe; and a plurality of air blow holes are formed on the surface of the air blowpipe corresponding to the chimney. In the automatic pressure control device for the gas furnace pressure, the air blowpipe is communicated with the air header pipe, and the air blow holes are formed on the air blowpipe; when the pressure inside the gas furnace is lower than the external pressure, the automatic valve is opened to ensure that the air blowpipe is communicated with the air header pipe, and the air inside the air header pipe is blown out through the air blow holes, so that an air curtain is formed at one end of the gas furnace to prevent external oxygen from entering a hearth of the gas furnace and prevent a workpiece inside the hearth from being oxidized; and when the pressure inside the gas furnace is higher than the external pressure, the automatic valve is closed, the air inside the gas furnace is released through the chimney to ensure constant pressure inside the hearth of the gas furnace.

Description

Automatic pressure control device for gas furnace pressure
Technical field
The present invention relates to a kind of control device, especially a kind of automatic pressure control device for gas furnace pressure belongs to the technical field that gas furnace is controlled.
Background technology
At present, use the furnace pressure control mode of gas furnace comparatively fuzzy.When the stove combustion pressure was high, furnace pressure was just high, and when the stove combustion pressure was hanged down, furnace pressure was just low.When being lower than external atmosphere pressure, extraneous oxygen enters in the stove, will cause the workpiece in the burner hearth oxidized, thereby influences the quality of workpiece.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of automatic pressure control device for gas furnace pressure is provided, it is simple in structure, and is easy to use, can make the interior workpiece of stove not oxidized, improves workpiece quality, safe and reliable.
According to technical scheme provided by the invention, described automatic pressure control device for gas furnace pressure comprises gas furnace and is positioned at the chimney of gas furnace one end that described chimney is connected with the burner hearth of gas furnace; Described gas furnace is provided with air header, and described air header is provided with the gas blow pipe that is connected corresponding to the end of contiguous chimney, and an end of described gas blow pipe links to each other with air header, and the other end is positioned at the below of chimney; Be provided with automatic valve between gas blow pipe and air header, gas blow pipe is provided with some gas holes corresponding to the surface that is positioned at chimney, and described gas hole is corresponding with chimney.
Also be provided with manually-operated gate between described gas blow pipe and air header.Be provided with pressure sensor in the described combustion furnace.Described combustion furnace is provided with the gripper shoe of symmetrical distribution corresponding to the end of contiguous gas blow pipe, and described gas blow pipe and gripper shoe fix.
Described gripper shoe is provided with reinforcement corresponding to the other end that links to each other with combustion furnace, and the two ends of described reinforcement fix with corresponding gripper shoe respectively.Described gas blow pipe is provided with the gas blow pipe valve corresponding to the other end that links to each other with air header.Described automatic valve is the electrical servo valve.Described pressure sensor links to each other with the input of controller, and automatic valve links to each other with the output of controller.
Advantage of the present invention: gas blow pipe is connected with air header, and the corresponding surface of gas blow pipe and chimney is provided with gas hole; Pressure sensor detects the gas furnace pressure inside, when the gas furnace pressure inside is lower than external pressure, automatic valve is opened, gas blow pipe is connected with air header, the gas of air header blows out by gas hole, thereby the end at gas furnace forms gas curtain, avoids external oxygen to enter in the burner hearth of gas furnace, avoids the workpiece in the burner hearth oxidized; When the gas furnace pressure inside was higher than external pressure, automatic valve was closed, and the gas in the gas furnace discharges by chimney, made the interior constant compression force that keeps of burner hearth of gas furnace.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that the C-C of Fig. 1 is to view.
The specific embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As Fig. 1 ~ shown in Figure 2: the present invention includes air header 1, manually-operated gate 2, automatic valve 3, gas furnace 4, chimney 5, gas blow pipe 6, pressure sensor 7, support 8, reinforcement 9, gas hole 10, gas blow pipe valve 11 and gripper shoe 12.
As depicted in figs. 1 and 2: described chimney 5 is positioned at an end of gas furnace 4, and chimney 5 is connected with the burner hearth of gas furnace 4.Utilize support 8 that air header 1 is installed on the outer wall of gas furnace 4, one end of described air header 1 is provided with gas blow pipe 6, one end of described gas blow pipe 6 is connected with air header 1, and the other end is positioned at the below of chimney 5, and gas blow pipe 6 is pressed the radial direction distribution of gas furnace 4.1 of gas blow pipe 6 and air header are provided with manually-operated gate 2 and automatic valve 3, being communicated with and closing of described manually-operated gate 2, automatic valve 3 control gas blow pipes 6 and 1 of air header.Manually-operated gate 2 can be in opening always, only needs the switching of control automatic valve 3 just can realize controlling the connected state of 1 of gas blow pipe 6 and air header; Automatic valve 3 is the electrical servo valve.Gas blow pipe 6 is provided with gas blow pipe valve 11 corresponding to the other end that links to each other with air header 1, and described gas blow pipe valve 11 is a manually-operated gate; Described gas blow pipe valve 11 is a normally close valve.
Be provided with pressure sensor 7 in the gas furnace 4, the gas pressure that described pressure sensor 7 detects in gas furnace 4 burner hearths, and described force value is transferred in the controller, controller is according to combustion furnace 4 burner hearth external and internal pressure values, the switching of control automatic valve 3, thereby the connected state of 1 of control gas blow pipe 6 and air header.Described controller can be single-chip microcomputer or other microprocessor.
Gas furnace 4 is provided with the gripper shoe 12 of symmetrical distribution corresponding to the end that chimney 5 is set, and described gripper shoe 12 fixes with gas furnace 4.Gas blow pipe 6 is installed in the end of gas furnace 4 by gripper shoe 12, and gas blow pipe 6 is fixedly connected with gripper shoe 12.Gripper shoe 12 is provided with reinforcement 9 corresponding to the other end that links to each other with gas furnace 4, and the two ends of described reinforcement 9 fix with corresponding gripper shoe 12 respectively, guarantees the bonding strength of 6 of gripper shoe 12 and gas blow pipes.
As depicted in figs. 1 and 2: during work: pressure sensor 7 detects the pressure of gas furnace 4 internal furnaces in real time, and described force value is transferred in the controller, and controller is controlled the switching of automatic valve 3 according to the force value of gas furnace 4 internal furnaces.When the furnace pressure of gas furnace 4 during greater than external pressure, automatic valve 3 is in closed condition, and air header 1 is not communicated with 6 of gas blow pipes; This moment, extraneous gas can not enter in the gas furnace 4, kept certain state for the pressure in the burner hearth that makes gas furnace 4 simultaneously, and the gas of gas furnace 4 discharges release by chimney 5.When the furnace pressure of gas furnace 4 was lower than external pressure, workpiece was oxidized in the burner hearth, just needed to stop extraneous gas to enter in the burner hearth; At this moment, controller is opened automatic valve 3, and air header 1 is connected with gas blow pipe 6, and the gas in the described air header 1 outwards sprays by the gas hole 10 of gas blow pipe 6.Owing on the gas blow pipe 6 some gas holes 10 are set, when all gas holes 10 all outside when jet, just can form gas curtain, thereby stop that external feed stream enters in the burner hearth of gas furnace 4, and make the interior air pressure of burner hearth of gas furnace 4 keep certain state in the end of gas furnace 4.
Gas blow pipe 6 of the present invention is connected with air header 1, and gas blow pipe 6 is provided with gas hole 10 with chimney 5 corresponding surfaces; Pressure sensor 7 detects gas furnace 4 pressure inside, when gas furnace 4 pressure inside are lower than external pressure, automatic valve 3 is opened, gas blow pipe 6 is connected with air header 1, the gas of air header 1 blows out by gas hole 10, thereby the end at gas furnace 4 forms gas curtain, avoids external oxygen to enter in the burner hearth of gas furnace 4, avoids the workpiece in the burner hearth oxidized; When gas furnace 4 pressure inside were higher than external pressure, automatic valve 3 was closed, and the gas in the gas furnace 4 discharges by chimney 5, made the interior constant compression force that keeps of burner hearth of gas furnace 4.

Claims (8)

1. automatic pressure control device for gas furnace pressure comprises gas furnace (4) and is positioned at the chimney (5) of gas furnace (4) one ends that described chimney (5) is connected with the burner hearth of gas furnace (4); It is characterized in that: described gas furnace (4) is provided with air header (1), described air header (1) is provided with the gas blow pipe (6) that is connected corresponding to the end of contiguous chimney (5), one end of described gas blow pipe (6) links to each other with air header (1), and the other end is positioned at the below of chimney (5); Be provided with automatic valve (3) between gas blow pipe (6) and air header (1), gas blow pipe (6) is provided with some gas holes (10) corresponding to the surface that is positioned at chimney (5), and described gas hole (10) is corresponding with chimney (5).
2. automatic pressure control device for gas furnace pressure according to claim 1 is characterized in that: also be provided with manually-operated gate (2) between described gas blow pipe (6) and air header (1).
3. automatic pressure control device for gas furnace pressure according to claim 1 is characterized in that: be provided with pressure sensor (7) in the described combustion furnace (4).
4. automatic pressure control device for gas furnace pressure according to claim 1, it is characterized in that: described combustion furnace (4) is provided with the gripper shoe (12) of symmetrical distribution corresponding to the end of contiguous gas blow pipe (6), and described gas blow pipe (6) fixes with gripper shoe (12).
5. automatic pressure control device for gas furnace pressure according to claim 4, it is characterized in that: described gripper shoe (12) is provided with reinforcement (4) corresponding to the other end that links to each other with combustion furnace (4), and the two ends of described reinforcement (4) fix with corresponding gripper shoe (12) respectively.
6. automatic pressure control device for gas furnace pressure according to claim 1 is characterized in that: described gas blow pipe (6) is provided with gas blow pipe valve (11) corresponding to the other end that links to each other with air header (1).
7. automatic pressure control device for gas furnace pressure according to claim 1 is characterized in that: described automatic valve (3) is the electrical servo valve.
8. automatic pressure control device for gas furnace pressure according to claim 3 is characterized in that: described pressure sensor (7) links to each other with the input of controller, and automatic valve (3) links to each other with the output of controller.
CN2010102744215A 2010-09-05 2010-09-05 Automatic pressure control device for gas furnace pressure Active CN101900359B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN101900359B CN101900359B (en) 2012-02-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110205447A (en) * 2019-07-11 2019-09-06 长春光华学院 A kind of heat treatment pressure monitoring device and its application method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0960853A (en) * 1995-08-25 1997-03-04 Kawasaki Giken:Kk Waste incinerating system and white smoke preventing method upon incinerating waste
CN1693755A (en) * 2001-01-17 2005-11-09 杰富意钢铁株式会社 Heating furnace with regenerative burners and method of operating heating furnace
JP2008157553A (en) * 2006-12-25 2008-07-10 Miura Co Ltd Fuel conditioning device for boiler
DE102008018889A1 (en) * 2008-04-14 2009-12-17 Yildirim Karamahmut Furnace for heating aluminum strands, comprises a burner nozzle for the combustion of an air-fuel mixture in a combustion chamber, a lambda probe for analysis of flue gas composition, and a transporting means
CN101672482A (en) * 2009-10-13 2010-03-17 夏学苏 Optimized air-distribution control system for industrial furnace
CN201779713U (en) * 2010-09-05 2011-03-30 无锡市盛力达机械工程有限公司 Automatic gas furnace pressure control device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0960853A (en) * 1995-08-25 1997-03-04 Kawasaki Giken:Kk Waste incinerating system and white smoke preventing method upon incinerating waste
CN1693755A (en) * 2001-01-17 2005-11-09 杰富意钢铁株式会社 Heating furnace with regenerative burners and method of operating heating furnace
JP2008157553A (en) * 2006-12-25 2008-07-10 Miura Co Ltd Fuel conditioning device for boiler
DE102008018889A1 (en) * 2008-04-14 2009-12-17 Yildirim Karamahmut Furnace for heating aluminum strands, comprises a burner nozzle for the combustion of an air-fuel mixture in a combustion chamber, a lambda probe for analysis of flue gas composition, and a transporting means
CN101672482A (en) * 2009-10-13 2010-03-17 夏学苏 Optimized air-distribution control system for industrial furnace
CN201779713U (en) * 2010-09-05 2011-03-30 无锡市盛力达机械工程有限公司 Automatic gas furnace pressure control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110205447A (en) * 2019-07-11 2019-09-06 长春光华学院 A kind of heat treatment pressure monitoring device and its application method

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Owner name: WUXI SUNLIT SCIENCE AND TECHNOLOGY CO., LTD.

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Address after: 214174 A B15, standard factory building, Huishan Economic Development Zone, Huishan District, Jiangsu, Wuxi

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Address before: 214174 A B15, standard factory building, Huishan Economic Development Zone, Huishan District, Jiangsu, Wuxi

Patentee before: Wuxi Shenglida Mechanical Engineering Co., Ltd.