CN101900360B - Sub-anti-backfire protection switch control device for gas furnace - Google Patents
Sub-anti-backfire protection switch control device for gas furnace Download PDFInfo
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- CN101900360B CN101900360B CN2010102744249A CN201010274424A CN101900360B CN 101900360 B CN101900360 B CN 101900360B CN 2010102744249 A CN2010102744249 A CN 2010102744249A CN 201010274424 A CN201010274424 A CN 201010274424A CN 101900360 B CN101900360 B CN 101900360B
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Abstract
The invention relates to a sub-anti-backfire protection switch control device for a gas furnace. The control device comprises a gas furnace, wherein the outer wall of the gas furnace is provided with an air pipe and a gas pipe by using a mounting frame respectively; a mixed gas pipe is arranged above the gas pipe and the air pipe; a gas connecting pipe communicated with the gas pipe is arranged on the gas pipe; an air connecting pipe communicated with the air pipe is arranged on the air pipe; a mixed gas connecting pipe communicated with the mixed gas pipe is arranged on the mixed gas pipe; the mixed gas connecting pipe is communicated with the air connecting pipe and the gas connecting pipe respectively; a plurality of burner guns are formed on the mixed gas pipe; the other end corresponding to one end of each burner gun connected with the mixed gas pipe is extended into a hearth of the gas furnace; and one end of the mixed gas pipe is provided with a release switch. The sub-anti-backfire protection switch control device for the gas furnace has the advantages of efficiently releasing pressure and ensuring safe use of the gas furnace, along with simple structure, convenient use, safety and reliability.
Description
Technical field
The present invention relates to a kind of protection switch control device, especially a kind of sub-anti-backfire protection switch control device for gas furnace belongs to the technical field that gas furnace is protected.
Background technology
At present, the gas furnace anti-backfire of use control protected mode is comparatively fuzzy.When burner extinguishes or the not enough tempering of rate-of flow when taking place, cut off air feed; But behind the cut-out air feed, the tempering pressure in the combustion pipe is not further discharged, and described tempering pressure can bring certain danger, influences the safe in utilization of gas furnace.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of sub-anti-backfire protection switch control device for gas furnace is provided, it is simple in structure, and is easy to use, and effectively release pressure guarantees the safe in utilization, safe and reliable of gas furnace.
According to technical scheme provided by the invention, described sub-anti-backfire protection switch control device for gas furnace, comprise gas furnace, the outer wall of described gas furnace utilizes mounting bracket to be separately installed with air hose and gas pipe, and the top of described gas pipe and air hose is provided with mixture pipe; Described 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; Mixture pipe is provided with the gaseous mixture tube connector, and described gaseous mixture tube connector is connected with mixture pipe; The gaseous mixture tube connector all is connected with air tube connector, coal gas tube connector respectively; Mixture pipe is provided with some burners, and described burner stretches in the burner hearth of gas furnace corresponding to the other end that links to each other with mixture pipe; The end of mixture pipe is provided with release-push.
Described release-push is an explosion switch.Described coal gas tube connector is connected with the gaseous mixture tube connector by intermediate connection tube; The joint portion of coal gas tube connector and intermediate connection tube is provided with safety valve.Described intermediate connection tube is provided with control valve.
Feedback pipe in the middle of being provided with between described control valve and gaseous mixture tube connector, 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.Described air tube connector is provided with automatic valve.
Described 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.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 mixture pipe is provided with some manually-operated gates.Described automatic valve is the electrical servo valve.
Advantage of the present invention: the end at mixture pipe is provided with release-push, and when the pressure step-down generation tempering of mixture pipe, pressure uprises in the mixture pipe; When the pressure in the mixture pipe during greater than the release pressure of release-push, release-push is opened outside release pressure, has avoided in the mixture pipe tempering pressure excessive, influences the safety of mixture pipe; Behind the release-push release pressure,, cut off the supply of coal gas in the gas pipe, guarantee the safety of gas furnace by the closed safe valve; Control valve can be regulated the supply of coal gas in the gas pipe, and bypass tube connector and bypass valve can carry out effective interlock protection to automatic valve, and be simple in structure, 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 manually-operated gate 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.
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.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 manually-operated gates 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; Safety valve 7 is a full-sealing valve, when guaranteeing safety valve 7 action, and gas pipe 8 safe in utilization.
As shown in Figure 1: during use, the coal gas in the gas pipe 8 is connected with mist tube connector 15 by coal gas tube connector 13, intermediate connection tube 12, and air hose 14 is connected with mist 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 the pressure of gas in the mixture pipe 2.Described bypass feedback pipe 1 and middle feedback pipe 16 respectively with the pressure feedback of gases in the mixture pipe 2 to bypass valve 4 and control valve 9, thereby regulate the opening degree of bypass valve 4 and control valve 9.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.
The present invention is provided with release-push 6 in the end of mixture pipe 2, and when the pressure step-down generation tempering of mixture pipe 2, pressure uprises in the mixture pipe 2; When the pressure in the mixture pipe 2 during greater than the release pressure of release-push 6, release-push 6 is opened outside release pressure, has avoided in the mixture pipe 2 tempering pressure excessive, influences the safety of mixture pipe 2; Behind release-push 6 release pressures,, cut off the supply of coal gas in the gas pipe 8, guarantee the safety of gas furnace 18 by closed safe valve 7; Control valve 9 can be regulated the supply of coal gas in the gas pipe 8, and bypass tube connector 11 can carry out effective interlock protection to automatic valve 5 with bypass valve 4, and is simple in structure, safe and reliable.
Claims (9)
1. sub-anti-backfire protection switch control device for gas furnace, outer wall at gas furnace (18) utilizes mounting bracket (17) to be separately installed with air hose (14) and gas pipe (8), and described gas pipe (8) is provided with mixture pipe (2) with the top of air hose (14); It is characterized in that: described 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); Mixture pipe (2) is provided with gaseous mixture tube connector (15), and described gaseous mixture tube connector (15) is connected with mixture pipe (2); Gaseous mixture tube connector (15) is connected with air tube connector (10), coal gas tube connector (13) respectively; Mixture pipe (2) is provided with some burners (3), and described burner (3) stretches in the burner hearth of gas furnace (18) corresponding to the other end that links to each other with mixture pipe (2); The end of mixture pipe (2) is provided with release-push (6).
2. sub-anti-backfire protection switch control device for gas furnace according to claim 1 is characterized in that: described release-push (6) is an explosion switch.
3. sub-anti-backfire protection switch control device for gas furnace according to claim 1 is characterized in that: described coal gas tube connector (13) is connected with gaseous mixture tube connector (15) by intermediate connection tube (12); Coal gas tube connector (13) is provided with safety valve (7) with the joint portion of intermediate connection tube (12).
4. sub-anti-backfire protection switch control device for gas furnace according to claim 3 is characterized in that: described intermediate connection tube (12) is provided with control valve (9).
5. sub-anti-backfire protection switch control device for gas furnace according to claim 4; it is characterized in that: feedback pipe (16) in the middle of being provided with between described control valve (9) and gaseous mixture tube connector (15), 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. sub-anti-backfire protection switch control device for gas furnace according to claim 1 is characterized in that: described air tube connector (10) is provided with automatic valve (5).
7. sub-anti-backfire protection switch control device for gas furnace according to claim 6, it is characterized in that: described 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).
8. sub-anti-backfire protection switch control device for gas furnace according to claim 1 is characterized in that: described mixture pipe (2) is provided with some manually-operated gates (19).
9. sub-anti-backfire protection switch control device for gas furnace according to claim 6 is characterized in that: described automatic valve (5) is the electrical servo valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102744249A CN101900360B (en) | 2010-09-05 | 2010-09-05 | Sub-anti-backfire protection switch control device for gas furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102744249A CN101900360B (en) | 2010-09-05 | 2010-09-05 | Sub-anti-backfire protection switch control device for gas furnace |
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| CN101900360A CN101900360A (en) | 2010-12-01 |
| CN101900360B true CN101900360B (en) | 2011-09-07 |
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| CN101900358B (en) * | 2010-09-05 | 2011-12-21 | 无锡市盛力达机械工程有限公司 | Anti-backfire lowest pressure by-pass control device of gas furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2059568B (en) * | 1979-09-25 | 1983-11-30 | British Gas Corp | Burner controls |
| US5118286A (en) * | 1991-01-17 | 1992-06-02 | Amtech Systems | Closed loop method and apparatus for preventing exhausted reactant gas from mixing with ambient air and enhancing repeatability of reaction gas results on wafers |
| CN2101180U (en) * | 1991-08-26 | 1992-04-08 | 天津市津青联合电器玻管厂 | Flameless burner |
| KR100588964B1 (en) * | 2001-12-26 | 2006-06-13 | 주식회사 포스코 | Apparatus for combustion by using extinct air of hot stove equipment |
| CN201447462U (en) * | 2009-06-12 | 2010-05-05 | 江苏禾友化工有限公司 | Safety valve for gas pipeline |
| CN101900358B (en) * | 2010-09-05 | 2011-12-21 | 无锡市盛力达机械工程有限公司 | Anti-backfire lowest pressure by-pass control device of gas furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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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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. |