CN101900358B - Anti-backfire lowest pressure by-pass control device of gas furnace - Google Patents
Anti-backfire lowest pressure by-pass control device of gas furnace Download PDFInfo
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- CN101900358B CN101900358B CN201010274373XA CN201010274373A CN101900358B CN 101900358 B CN101900358 B CN 101900358B CN 201010274373X A CN201010274373X A CN 201010274373XA CN 201010274373 A CN201010274373 A CN 201010274373A CN 101900358 B CN101900358 B CN 101900358B
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Abstract
The invention relates to an anti-backfire lowest pressure by-pass control device of a gas furnace, which comprises the gas furnace, a gas pipe and an air pipe are arranged on the outer wall of the gas furnace by utilizing a mounting support, a mixed gas pipe is arranged above the gas pipe and the air pipe, and a mixed gas connecting pipe is arranged on the mixed gas pipe; a gas connecting pipe is arranged on the gas pipe; an air connecting pipe is arranged on the air pipe; the air connecting pipe and the gas connecting pipe are communicated with the mixed gas connecting pipe; a plurality of burners are arranged on the mixed gas pipe, and the burners are communicated with the mixed gas pipe; an automatic valve is arranged on the air connecting pipe, a by-pass connecting pipe is arranged at two ends which correspond to the automatic valve of the air connecting pipe, and the by-pass connecting pipe is communicated with the air connecting pipe; a by-pass valve is arranged on the by-pass connecting pipe, a by-pass feedback pipe is arranged on the by-pass valve, and the other end which is connected with the by-pass valve of the by-pass feedback pipe is communicated with the mixed gas pipe. The anti-backfire lowest pressure by-pass control device of the gas furnace has simple structure, and can keep the pressure of the mixed gas pipe, avoid the occurrence of backfire, be convenient to use, and be safe and reliable.
Description
Technical field
The present invention relates to a kind of anti-backfire control device, especially a kind of anti-backfire lowest pressure by-pass control device of gas furnace belongs to the technical field that gas furnace is protected.
Background technology
At present, the gas furnace of use does not have minimum pressure control; When burner extinguishes or rate-of flow when not enough, tempering very easily takes place in the pressure step-down in the mixture pipe, influences the normal use of gas furnace.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of anti-backfire lowest pressure by-pass control device of gas furnace is provided, it is simple in structure, can keep the pressure of mixture pipe, avoids tempering to take place, and is easy to use, safe and reliable.
According to technical scheme provided by the invention, described anti-backfire lowest pressure by-pass control device of gas furnace, comprise gas furnace, utilize mounting bracket that gas pipe and air hose are housed on the outer wall of described gas furnace, the top of described gas pipe and air hose is provided with mixture pipe, described mixture pipe is provided with the gaseous mixture tube connector, and described gaseous mixture tube connector is connected with mixture pipe; Gas pipe is provided with the coal gas tube connector, and described coal gas tube connector is connected with gas pipe; Air hose is provided with the air tube connector, and described air tube connector is connected with air hose; Air tube connector, coal gas tube connector all are connected with the gaseous mixture tube connector; Mixture pipe is provided with some burners, and described burner is connected with mixture pipe, and the other end stretches in the burner hearth of gas furnace; Described air tube connector is provided with automatic valve, and the air tube connector is provided with the bypass tube connector corresponding to the two ends of automatic valve, and described bypass tube connector is connected with the air tube connector; The bypass tube connector is provided with bypass valve, and described bypass valve is provided with bypass feedback pipe, and described bypass feedback pipe is connected with mixture pipe corresponding to the other end that links to each other with bypass valve.
Described automatic valve is the electrical servo valve.Described coal gas tube connector is provided with intermediate connection tube corresponding to the other end that links to each other with gas pipe, and described coal gas tube connector is connected with the gaseous mixture tube connector by intermediate connection tube.Described intermediate connection tube is provided with control valve.
Feedback pipe in the middle of described control valve is provided with, described middle feedback pipe is connected with the gaseous mixture tube connector corresponding to the other end that links to each other with control valve.The end of described mixture pipe is provided with release-push.
Described release-push is an explosion switch.Described mixture pipe is provided with hand switch.Described bypass feedback pipe is provided with the bypass hand switch corresponding to the end of contiguous mixture pipe.
Advantage of the present invention: the air tube connector is provided with automatic valve, and the air tube connector is provided with the bypass tube connector corresponding to the two ends of automatic valve, and described bypass tube connector is provided with bypass valve, and described bypass valve is provided with bypass feedback pipe; When automatic valve was closed, the air tube connector was connected with the gaseous mixture tube connector by the bypass tube connector, guaranteed the mixed combustion pressure in the mixture pipe; To bypass valve, the aperture of control bypass valve makes to keep minimum combustion pressure in the mixture pipe bypass feedback pipe, when avoiding mixture pipe internal pressure low-pressure combustion pressure, produces tempering phenomenon, guarantees mixture pipe safety with the pressure feedback in the mixture pipe; The end of mixture pipe is provided with release-push, and when generation tempering pressure became big in the mixture pipe, release-push can discharge the pressure in the mixture pipe, and was safe and reliable.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in Figure 1: the present invention includes bypass feedback pipe 1, mixture pipe 2, burner 3, bypass valve 4, automatic valve 5, release-push 6, safety valve 7, gas pipe 8, control valve 9, air tube connector 10, bypass tube connector 11, intermediate connection tube 12, coal gas tube connector 13, air hose 14, gaseous mixture tube connector 15, middle feedback pipe 16, mounting bracket 17, gas furnace 18 and hand switch 19.
As shown in Figure 1: the outer wall of described gas furnace 18 is provided with gas pipe 8 and air hose 14, and all by the axial distribution of gas furnace 18, gas pipe 8 parallels distribution with 14 of air hoses for described gas pipe 8 and air hose 14.Gas pipe 8 all utilizes mounting bracket 17 to be installed on the gas furnace 18 with air hose 14; Gas pipe 8 is provided with mixture pipe 2 with the top of air hose 14, and described mixture pipe 2 is fixed on the outer wall of gas furnace 18.Gas pipe 8 is provided with the coal gas tube connector 13 of vertical distribution, and described coal gas tube connector 13 is connected with gas pipe 8; Coal gas tube connector 13 is positioned at the center of gas pipe 8.One end of air hose 14 is provided with the air tube connector 10 of vertical distribution, and described air tube connector 10 is connected with air hose 14.The center of mixture pipe 2 is provided with the gaseous mixture tube connector 15 of vertical distribution, and described gaseous mixture tube connector 15 is connected with mixture pipe 2.Gaseous mixture tube connector 15 is connected with air hose 14 by air tube connector 10; Gaseous mixture tube connector 15 links to each other with coal gas tube connector 13 by intermediate connection tube 12, thereby mixture pipe 2 all is connected with gas pipe 8, air hose 14.Air tube connector 10 is provided with automatic valve 5, and described automatic valve 5 is the electrical servo valve.Air tube connector 10 is provided with bypass tube connector 11 corresponding to the two ends of automatic valve 5, and described bypass tube connector 11 is connected with air tube connector 10; Bypass tube connector 11 is provided with bypass valve 4, and described bypass valve 4 is provided with bypass feedback pipe 1, and described bypass feedback pipe 1 is connected with mixture pipe 2 corresponding to the other end that links to each other with bypass valve 4.When automatic valve 5 was closed, air tube connector 10 can link to each other with gaseous mixture tube connector 15 by bypass tube connector 11.Bypass feedback pipe 1 arrives bypass valve 4 with the pressure feedback of mixture pipe 2, and described bypass valve 4 is mechanical membrane valve; The pressure correlation of the aperture of bypass valve 4 and mixture pipe 2; The aperture difference of bypass valve 4 can provide minimum combustion pressure for mixture pipe 2, when avoiding the pressure of mixture pipe 2 to be lower than combustion pressure, produces tempering phenomenon, guarantees the safe in utilization of mixture pipe 2.
Described coal gas tube connector 13 is provided with safety valve 7 with the joint portion of intermediate connection tube 12, and described safety valve 7 can cut off the gas supply of gas pipe 8 to mixture pipe 2; Safety valve 7 is hermetic valve, guarantees the safe in utilization of gas pipe 8.Intermediate connection tube 12 is provided with control valve 9, feedback pipe 16 in the middle of described control valve 9 is provided with, described in the middle of feedback pipe 16 be connected with gaseous mixture tube connector 15 corresponding to the other end that links to each other with control valve 9.Control valve 9 is adjusted opening degree according to the force value of centre feedback pipe 16 feedbacks, thereby reaches the coal gas amount of adjusting gas pipe 8 inputs.
Mixture pipe 2 is provided with some burners 3, and an end of described burner 3 is connected with mixture pipe 2, and the other end stretches in the burner hearth of gas furnace 18.The end of mixture pipe 2 is provided with release-push 6, and described release-push 6 is an explosion switch; When burner 3 extinguishes or during the pressure step-down tempering of mixture pipe 2; pressure in the mixture pipe 2 uprises; pressure in the mixture pipe 2 is during greater than the release pressure of release-push 6; 6 moments of release-push open; the pressure of mixture pipe 2 is discharged into the outside; reduce mixture pipe 2 internal pressures, guarantee the safety of mixture pipe 2.When release-push 6 is opened, can give signal of controller, described controller closed safe valve 7 cuts off the gas supply of gas pipe 8.Also be provided with some hand switches 19 on the mixture pipe 2, can the manual release mixture pipe pressure in 2.Release-push 6 links to each other with the input of controller, and safety valve 7 links to each other with the output of controller, and controller can be according to the state of release-push 6, the state of control safety valve 7.
As shown in Figure 1: during use, the coal gas in the gas pipe 8 is connected with gaseous mixture tube connector 15 by coal gas tube connector 13, intermediate connection tube 12, and air hose 14 is connected with gaseous mixture tube connector 15 by air tube connector 10; Coal gas in the gas pipe 8 enters in the mixture pipe 2 with after air in the air hose 14 mixes, and the mists in the described mixture pipe 2 enter burning through burners 3, thereby gas furnace 18 interior burner hearths are heated.When the automatic valve on the air tube connector 10 5 was closed, air tube connector 10 can be connected with gaseous mixture tube connector 15 by bypass tube connector 11, has guaranteed coal gas and Air mixing, had guaranteed burning of gas pressure in the mixture pipe 2.Bypass feedback pipe 1 arrives bypass valve 4 with the pressure feedback of mixture pipe 2, and the aperture of control bypass valve 4 guarantees that the pressure in the mixture pipe 2 can be kept minimum combustion pressure, avoids mixture pipe 2 that tempering phenomenon takes place.Middle feedback pipe 16 arrives control valve 9 with the pressure feedback of gas in the mixture pipe 2, thereby the opening degree of control valve 9 guarantees the supply of coal gas in the mixture pipe 2.When because burner 3 extinguishes or extraneous medium causes mixture pipe 2 pressure step-downs when causing tempering to take place, pressure in the mixture pipe 2 uprises, when the pressure in the mixture pipe 2 during greater than the release pressure of release-push 6, release-push 6 will be opened, air pressure in the mixture pipe 2 are discharged, thereby reduced pressure in the mixture pipe 2.When release-push 6 was opened, controller can closed safe valve 7, stopped the coal gas in the gas pipe 8 are transported in the mixture pipe 2, and is safe and reliable.
Air tube connector 10 of the present invention is provided with automatic valve 5, and air tube connector 10 is provided with bypass tube connector 11 corresponding to the two ends of automatic valve 5, and described bypass tube connector 11 is provided with bypass valve 4, and described bypass valve 4 is provided with bypass feedback pipe 1; When automatic valve 5 was closed, air tube connector 10 was connected with gaseous mixture tube connector 15 by bypass tube connector 11, guaranteed the mixed combustion pressure in the mixture pipe 2; Bypass feedback pipe 1 arrives 4 of bypass valves with the pressure feedback in the mixture pipe 2, the aperture of control bypass valve 4 makes to keep minimum combustion pressure in the mixture pipe 2, when avoiding mixture pipe 2 internal pressure low-pressure combustion pressure, produce tempering phenomenon, guarantee mixture pipe safety; The end of mixture pipe 2 is provided with release-push 6, and when generation tempering pressure became big in the mixture pipe 2, release-push 6 can discharge the pressure in the mixture pipe 2, and was safe and reliable.
Claims (8)
1. anti-backfire lowest pressure by-pass control device of gas furnace, comprise gas furnace (18), utilize mounting bracket (17) that gas pipe (8) and air hose (14) are housed on the outer wall of described gas furnace (18), described gas pipe (8) is provided with mixture pipe (2) with the top of air hose (14), described mixture pipe (2) is provided with gaseous mixture tube connector (15), and described gaseous mixture tube connector (15) is connected with mixture pipe (2); Gas pipe (8) is provided with coal gas tube connector (13), and described coal gas tube connector (13) is connected with gas pipe (8); Air hose (14) is provided with air tube connector (10), and described air tube connector (10) is connected with air hose (14); Air tube connector (10), coal gas tube connector (13) all are connected with gaseous mixture tube connector (15); Mixture pipe (2) is provided with some burners (3), and described burner (3) is connected with mixture pipe (2), and the other end stretches in the burner hearth of gas furnace (18); It is characterized in that: described air tube connector (10) is provided with automatic valve (5), and air tube connector (10) is provided with bypass tube connector (11) corresponding to the two ends of automatic valve (5), and described bypass tube connector (11) is connected with air tube connector (10); Bypass tube connector (11) is provided with bypass valve (4), and described bypass valve (4) is provided with bypass feedback pipe (1), and described bypass feedback pipe (1) is connected with mixture pipe (2) corresponding to the other end that links to each other with bypass valve (4).
2. anti-backfire lowest pressure by-pass control device of gas furnace according to claim 1 is characterized in that: described automatic valve (5) is the electrical servo valve.
3. anti-backfire lowest pressure by-pass control device of gas furnace according to claim 1, it is characterized in that: described coal gas tube connector (13) is provided with intermediate connection tube (12) corresponding to the other end that links to each other with gas pipe (8), and described coal gas tube connector (13) is connected with gaseous mixture tube connector (15) by intermediate connection tube (12).
4. anti-backfire lowest pressure by-pass control device of gas furnace according to claim 3 is characterized in that: described intermediate connection tube (12) is provided with control valve (9).
5. anti-backfire lowest pressure by-pass control device of gas furnace according to claim 4, it is characterized in that: feedback pipe (16) in the middle of described control valve (9) is provided with, described middle feedback pipe (16) is connected with gaseous mixture tube connector (15) corresponding to the other end that links to each other with control valve (9).
6. anti-backfire lowest pressure by-pass control device of gas furnace according to claim 1 is characterized in that: the end of described mixture pipe (2) is provided with release-push (6); Described release-push (6) is an explosion switch.
7. anti-backfire lowest pressure by-pass control device of gas furnace according to claim 1 is characterized in that: described mixture pipe (2) is provided with hand switch (19).
8. anti-backfire lowest pressure by-pass control device of gas furnace according to claim 1 is characterized in that: described bypass feedback pipe (1) is provided with the bypass hand switch corresponding to the end of contiguous mixture pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010274373XA CN101900358B (en) | 2010-09-05 | 2010-09-05 | Anti-backfire lowest pressure by-pass control device of gas furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010274373XA CN101900358B (en) | 2010-09-05 | 2010-09-05 | Anti-backfire lowest pressure by-pass control device of gas furnace |
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| Publication Number | Publication Date |
|---|---|
| CN101900358A CN101900358A (en) | 2010-12-01 |
| CN101900358B true CN101900358B (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010274373XA Active CN101900358B (en) | 2010-09-05 | 2010-09-05 | Anti-backfire lowest pressure by-pass control device of gas furnace |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101900360B (en) * | 2010-09-05 | 2011-09-07 | 无锡市盛力达机械工程有限公司 | Sub-anti-backfire protection switch control device for gas furnace |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040013019A (en) * | 2004-01-03 | 2004-02-11 | 염병삼 | Feedback control apparatus and method of fuel for a LPG car |
| CN200958432Y (en) * | 2006-05-22 | 2007-10-10 | 朱裕丰 | Low-concentration gas safety feeder |
| CN100587313C (en) * | 2006-12-28 | 2010-02-03 | 杨炳霖 | Combustible gas pressure container with multistage backfire fire-proof device |
| CN201779715U (en) * | 2010-09-05 | 2011-03-30 | 无锡市盛力达机械工程有限公司 | Anti-tempering lowest-pressure bypass control device of gas furnace |
| CN201779714U (en) * | 2010-09-05 | 2011-03-30 | 无锡市盛力达机械工程有限公司 | Anti-backfire protection switch control device of gas furnace |
| CN101900360B (en) * | 2010-09-05 | 2011-09-07 | 无锡市盛力达机械工程有限公司 | Sub-anti-backfire protection switch control device for gas furnace |
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| CN101900358A (en) | 2010-12-01 |
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Owner name: WUXI SUNLIT SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: WUXI SHENGLIDA MECHANICAL ENGINEERING CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 214174 A B15, standard factory building, Huishan Economic Development Zone, Huishan District, Jiangsu, Wuxi Patentee after: Wuxi Sunlit Science and Technology Co., Ltd. Address before: 214174 A B15, standard factory building, Huishan Economic Development Zone, Huishan District, Jiangsu, Wuxi Patentee before: Wuxi Shenglida Mechanical Engineering Co., Ltd. |