CN204943666U - A kind of double-source gas anoxia protection arrangement - Google Patents
A kind of double-source gas anoxia protection arrangement Download PDFInfo
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- CN204943666U CN204943666U CN201520692534.5U CN201520692534U CN204943666U CN 204943666 U CN204943666 U CN 204943666U CN 201520692534 U CN201520692534 U CN 201520692534U CN 204943666 U CN204943666 U CN 204943666U
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Abstract
A kind of double-source gas anoxia protection arrangement, relates to gas technology field, comprises mounting bracket, mounting bracket connects natural gas ever-burning flame assembly, liquefied gas ever-burning flame assembly, ignition electrode, high-temperature thermistor; Natural gas ever-burning flame assembly comprises natural gas nozzle, prevention of natural gas ejected pipe, natural gas nozzles, and liquefied gas ever-burning flame assembly comprises liquefied gas nozzle, liquefied gas induction tunnel, liquefied gas nozzles; The gas outlet of liquefied gas nozzles and the gas outlet of natural gas nozzles intersect; The needle point of ignition electrode is positioned at the middle part of liquefied gas nozzles and natural gas nozzles; Protective device also comprises negative thermal electrode, and one end of negative thermal electrode is fixedly connected with liquefied gas nozzles, natural gas nozzles head, and negative thermal electrode is connected with high-temperature thermistor by extended line, and high-temperature thermistor is arranged near liquefied gas nozzles, natural gas nozzles.The utility model adds the function of dual gas supply access function, anti-source of the gas wrong on the basis of common anoxia protection arrangement.
Description
Technical field
The utility model relates to gas technology field, is specifically related to the igniting of gas utensil, safeguard protection technical field of automation.
Background technology
Gas extinguishing fire protective device (ODS) is mainly used in the similar gas-fired equipment such as fuel gas heating apparatus; play hypoxia protection function (when oxygen content in air is reduced to certain concentration; carbon dioxide raises and reaches certain concentration, automatically will cut off gas electromagnetic valve).The source of the gas that gas-fired equipment uses is more single.In recent years, market there is the gas-fired equipment of dual gas supply.In order to the market demand, this product arises at the historic moment.
Some company is only simple at present uses the anoxia protection arrangement (ODS) of different source of the gas to connect together by two kinds, independent use.This modular appliance is bulky, is not easy to install, and does not possess the function of anti-source of the gas wrong.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of double-source gas anoxia protection arrangement, and the basis of common anoxia protection arrangement (ODS) adds the function of dual gas supply access function, anti-source of the gas wrong.
The purpose of this utility model is achieved in that a kind of double-source gas anoxia protection arrangement, comprises mounting bracket, and mounting bracket connects natural gas ever-burning flame assembly, liquefied gas ever-burning flame assembly, ignition electrode, high-temperature thermistor; Natural gas ever-burning flame assembly comprise connect successively natural gas nozzle, prevention of natural gas ejected pipe, nichrome make natural gas nozzles, liquefied gas ever-burning flame assembly comprise connect successively liquefied gas nozzle, liquefied gas induction tunnel, nichrome make liquefied gas nozzles; Liquefied gas ever-burning flame assembly and natural gas ever-burning flame assembly are connected in parallel on mounting bracket, form angle, and the gas outlet of the gas outlet of liquefied gas nozzles and natural gas nozzles intersect between liquefied gas ever-burning flame assembly and natural gas ever-burning flame assembly; Described ignition electrode has one, and the needle point of ignition electrode is positioned at the middle part of liquefied gas nozzles and natural gas nozzles; Described protective device also comprises negative thermal electrode; one end of negative thermal electrode is fixedly connected with liquefied gas nozzles, natural gas nozzles head; negative thermal electrode is connected with described high-temperature thermistor by extended line, and high-temperature thermistor is arranged near liquefied gas nozzles, natural gas nozzles.
The utility model, by above design, has following characteristics:
1, the utility model only arranges an ignition electrode, and needle point is positioned at the middle part of two nozzles, and the gas both can lighting natural gas nozzles also can light the gas of liquefied gas nozzles.
2, simplify the way of thermocouple in general anoxia protective device (ODS), eliminate probe, copper seat, copper pipe.And directly have employed negative thermal electrode be welded on two nozzles middle parts (natural gas nozzles, liquefied gas nozzles material adopt nichrome make, nozzles can be used as hot electrode), with thermocouple extension line, induction tunnel, and the parts such as mounting bracket, gas-fired equipment shell, magnetic valve form closed-loop path, reach the function of thermocouple.Both save space, also reduce cost.
3, be positioned at distance certain near two nozzles and arrange a high-temperature thermistor (PTC positive temperature coefficient), be connected on thermocouple circuit in, to realize the function of anti-source of the gas wrong, reach certain security.
When product uses, different types of combustion gas is injected from the nozzle of correspondence, and ignition electrode is lighted a fire at nozzles place, heat outputting electromotive force after thermode head (negative thermal electrode and the head as the nozzles of hot electrode) is heated, maintain the open mode of gas electromagnetic valve, product is in work.When content of oxygen in air is reduced to certain degree, flame will elongate, and reddens, and temperature reduces, and finally stops working, and thermocouple induction is less than temperature, and potential-free exports, and automatically cuts off gas electromagnetic valve, plays hypoxia protection effect.When there is situation (combustion gas wrong has two kinds of situations) of combustion gas wrong, if natural gas enters from the nozzle misconnection of liquefied gas, because the pressure ratio liquefied gas of natural gas is much lower, and the nozzle bore of liquefied gas is less than the nozzle bore of natural gas many again, the gas discharge that misconnection enters diminishes, ignition electrode igniting after flame very little or point do not fire, this situation is safe, does not need anti-misconnection to protect; And if liquefied gas enters from the nozzle misconnection of natural gas, because the pressure ratio natural gas of liquefied gas is large many, and the nozzle bore of natural gas is larger than liquefied gas nozzle bore many again, the liquid gas flow quantitative change that misconnection enters is large, after ignition electrode igniting, flame is very large, very long, length distance is enough to be burned to high-temperature thermistor (PTC positive temperature coefficient), after thermistor is heated, resistance increases instantaneously, owing to being be connected in the circuit of thermocouple, the thermoelectrical potential that thermocouple exports reduces rapidly, is even zero.Undercurrent is to maintain the open mode of gas electromagnetic valve, and combustion gas is cut off automatically, thus plays the function of anti-source of the gas wrong.
The utility model has the advantages that: on the basis that ensure that product function, simplify some structures, make small product size less, also reduce process costs and material cost simultaneously.And parts are integrated into effectively an interactive entirety, only use an ignition electrode, also simplify the way of thermocouple, innovate a high-temperature thermistor (PTC positive temperature coefficient) of having connected in the circuit of thermocouple, reach preventing gas misconnection function, and volume is exquisite, compact conformation is reasonable, with low cost, be convenient to install.
As improvement of the present utility model, the section of natural gas nozzles and the section of liquefied gas nozzles all c-shaped, the opening part of natural gas nozzles and the opening part of liquefied gas nozzles are fixedly connected.Natural gas nozzles and liquefied gas nozzles inner portion excise interference portion respectively, and are connected in parallel, and two nozzles gas outlets form blending.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is A portion enlarged drawing in Fig. 1.
Detailed description of the invention
As shown in Figure 1, 2, double-source gas anoxia protection arrangement, comprises mounting bracket 9, and mounting bracket 9 connects natural gas ever-burning flame assembly 13, liquefied gas ever-burning flame assembly 14, ignition electrode 5, high-temperature thermistor 6.
Natural gas ever-burning flame assembly 13 comprise connect successively natural gas nozzle 11, prevention of natural gas ejected pipe 1, nichrome make natural gas nozzles 3.Liquefied gas ever-burning flame assembly 14 comprise connect successively liquefied gas nozzle 12, liquefied gas induction tunnel 2, nichrome make liquefied gas nozzles 4.Liquefied gas ever-burning flame assembly 14 and natural gas ever-burning flame assembly 13 are connected in parallel on mounting bracket 9, form angle between liquefied gas ever-burning flame assembly 14 and natural gas ever-burning flame assembly 13, and the gas outlet of the gas outlet of liquefied gas nozzles 4 and natural gas nozzles 3 intersects.The section of natural gas nozzles 3 and the section of liquefied gas nozzles 4 all c-shaped, the opening part of natural gas nozzles 3 and the opening part of liquefied gas nozzles 4 are fixedly connected.
Ignition electrode 5 has one, and the needle point of ignition electrode 5 is positioned at the middle part of liquefied gas nozzles 4 and natural gas nozzles 3, and the gas both can lighting natural gas nozzles 4 also can light the gas of liquefied gas nozzles 3.
Protective device also comprises negative thermal electrode 10; one end of negative thermal electrode 10 is welded with liquefied gas nozzles 4, natural gas nozzles 3 head; negative thermal electrode 10 is connected with high-temperature thermistor 6 by extended line 8; high-temperature thermistor 6 is arranged near liquefied gas nozzles 4, natural gas nozzles 3; the lead-in wire 7 of high-temperature thermistor 6 is connected to magnetic valve, realizes combustion gas misconnection defencive function.
Claims (2)
1. a double-source gas anoxia protection arrangement, is characterized in that: comprise mounting bracket, and mounting bracket connects natural gas ever-burning flame assembly, liquefied gas ever-burning flame assembly, ignition electrode, high-temperature thermistor; Natural gas ever-burning flame assembly comprise connect successively natural gas nozzle, prevention of natural gas ejected pipe, nichrome make natural gas nozzles, liquefied gas ever-burning flame assembly comprise connect successively liquefied gas nozzle, liquefied gas induction tunnel, nichrome make liquefied gas nozzles; Liquefied gas ever-burning flame assembly and natural gas ever-burning flame assembly are connected in parallel on mounting bracket, form angle, and the gas outlet of the gas outlet of liquefied gas nozzles and natural gas nozzles intersect between liquefied gas ever-burning flame assembly and natural gas ever-burning flame assembly; Described ignition electrode has one, and the needle point of ignition electrode is positioned at the middle part of liquefied gas nozzles and natural gas nozzles; Described protective device also comprises negative thermal electrode; one end of negative thermal electrode is fixedly connected with liquefied gas nozzles, natural gas nozzles head; negative thermal electrode is connected with described high-temperature thermistor by extended line, and high-temperature thermistor is arranged near liquefied gas nozzles, natural gas nozzles.
2. double-source gas anoxia protection arrangement according to claim 1, is characterized in that: the section of described natural gas nozzles and the section of liquefied gas nozzles all c-shaped, the opening part of natural gas nozzles and the opening part of liquefied gas nozzles are fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520692534.5U CN204943666U (en) | 2015-09-09 | 2015-09-09 | A kind of double-source gas anoxia protection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520692534.5U CN204943666U (en) | 2015-09-09 | 2015-09-09 | A kind of double-source gas anoxia protection arrangement |
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| CN204943666U true CN204943666U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520692534.5U Active CN204943666U (en) | 2015-09-09 | 2015-09-09 | A kind of double-source gas anoxia protection arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091080A (en) * | 2015-09-09 | 2015-11-25 | 扬州市飞鹰电子科技有限公司 | Double-gas-source fuel gas oxygen deficit protection device |
-
2015
- 2015-09-09 CN CN201520692534.5U patent/CN204943666U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091080A (en) * | 2015-09-09 | 2015-11-25 | 扬州市飞鹰电子科技有限公司 | Double-gas-source fuel gas oxygen deficit protection device |
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