CN103512056A - Performance control system of oxygen-deficit protection device suitable for various flue gas types and gas pressures - Google Patents
Performance control system of oxygen-deficit protection device suitable for various flue gas types and gas pressures Download PDFInfo
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- CN103512056A CN103512056A CN201210218876.4A CN201210218876A CN103512056A CN 103512056 A CN103512056 A CN 103512056A CN 201210218876 A CN201210218876 A CN 201210218876A CN 103512056 A CN103512056 A CN 103512056A
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Abstract
The invention relates to a performance control system of an oxygen-deficit protection device suitable for various flue gas types and gas pressures. The performance control system comprises an installation rack, an injecting pipe, a thermocouple and an ignition needle, wherein an internal thread and a thread step are arranged in the injecting pipe, and the internal thread is connected with a lower nozzle; the upper step position of the thread is provided with a first mixing channel, and two symmetrical air holes are formed in the step; the hole diameter of each air hole is 2.6+/-0.2mm, and a second mixing channel of which the inner diameter is smaller than that of the first mixing channel is arranged; a flue gas nozzle is provided with two steps, and the heights of the steps are larger than the inner diameter of the air holes in the injecting pipe; the distance between the top plane of a nozzle gas hole and the bottom of the first mixing channel of the injecting pipe is 1.5-2mm, and the step gap 2 of the top edge of the nozzle is larger than 1mm; the end part of the ignition needle is positioned at the outer side of the inner wall of the top of the injecting pipe. The performance control system of the oxygen-deficit protection device can be simultaneously applied to various flue gas kinds and different flue gas pressures and can also ensure that the cutoff point is qualified.
Description
Technical field
The present invention relates to a kind of security protection system of gas utensil, be specifically related to the anoxia protection arrangement Properties Control system of a kind of applicable various gas type and air pressure.The present invention is mainly used in and uses as the gas utensil safety device of the combustion gas such as liquefied gas (LPG), natural gas (NG), butane (Butane), gas utensil is stopped working after anoxic and automatically shut down gas source, realizes safety protective effect.
Background technology
Anoxia protection arrangement, also claim that ODS(is if Fig. 1-1 is to being conventional ODS in two kinds of prior aries as shown in Fig. 1-4), be widely used in indoor fuel gas tool, its concrete function be when gas utensil sealing indoor use time, along with combustion gas is constantly burnt, indoor O2 constantly consumes, produce the unfavorable CO2 that even has influence on life security of health simultaneously, the gases such as CO, and anoxia protection arrangement is by airborne each gas componant content of induction, and drop between certain standard regions or CO2 at O2 content, when CO content rises between certain standard regions, anoxia protection arrangement flame automatic distinguishing, send the control signal of telecommunication, by the air-source shutoff of gas utensil, make its automatic distinguishing, reach the effect of protection health safety.
The induction extinguish protection function of anoxia protection arrangement, is determined by a lot of factors, such as:
1. self structure: the air inflow of inner combustion gas and air, the mixed effect of combustion gas and air, ignition electrode is to interference of flame etc.;
2. composition of air: as O2 content, CO2 content etc.;
3. combustion gas kind: as liquefied gas (LPG), natural gas (NG), butane (Butane) etc., gas is different, and effect is different;
4. combustion gas air pressure: source of the gas air pressure during gas utensil burning is different, and ODS auto extinguishing point is difference also;
5. surrounding environment: temperature, humidity, air flow property.
If anoxia protection arrangement is at space structure of gas utensil Shang installation site, gas utensil self etc.;
According to current industry standard, comprise CE, CSA etc., anoxia protection arrangement all should have following application performance:
1. be easy to igniting, as double igniting should be able to guarantee anoxia protection arrangement, light a fire successfully.Wherein, combustion gas air pressure is higher, environment temperature is when lower, and just more difficult point is caught fire;
2. without yellow flame, anoxia protection arrangement self flame color should be blue or light blue, should be without yellow, because of yellow flame unfavorable to outward appearance, performance;
3. suitable, the flameholding of flame size, can light the main fire of gas utensil, and gentle breeze, slight vibration do not put out a fire, to guarantee normal use.
4. in good time flame-out; this is the most necessary most important function of blowout protection, presses in CSA industry and conventionally should in the 17%-20% of O2 content interval, can put out a fire, and is strict with CO2 content can puts out a fire when 0.8%-1.5% is interval by CE standard; meanwhile, CO can not surpass 100ppm.
Wherein, O2, CO2 when anoxia protection arrangement is flame-out, the air content of CO, and each ambient parameter values such as temperature at that time, be called its cut-off point.The scope that the cut-off point of anoxia protection arrangement under equivalent environment is variable and adjustable is larger, is determining that anoxia protection arrangement, when application, more can adapt to different environmental changes.
Current anoxia protection arrangement, large multipotency meets the performance requirement of LPG combustion gas, such as successfully igniting, cut-off point is qualified etc., but along with social development and change, butane (Butan), generally using gradually of natural gas (NG), the too small problem of the variable adjustable extent of cut-off point of the structural design of current anoxia protection arrangement just comes out, such as to butane, cut-off point is qualified, but be difficult for lighting even not, good igniting but cut-off point is defective, or there is the phenomenons such as Huang Yan, such as extinguishing CO2 air percentage composition while dying, far above 1.5%, even surpass 2.5%.And in the application of NG; the actual CO2 that do not reach of current anoxia protection arrangement is at 0.8%～1.5% this cut-off point area requirement; conventionally can be 3%～5%, so can only be used as ever-burning flame (for gas utensil provides burning things which may cause a fire disaster, but not providing the pseudo-anoxia protection arrangement of extinguish protection function).
Summary of the invention
The anoxia protection arrangement Properties Control system that the object of this invention is to provide a kind of applicable various gas type and air pressure, the present invention is exactly the feature of several factors impact that is subject to according to the performance of anoxia protection arrangement, for current line anoxia protection arrangement in the industry to the low present situation of gas type fitness, design and a kind ofly can be applied to various gas simultaneously, as liquefied gas (LPG, Propane), natural gas (NG), the combustion gas kinds such as butane (Propane), and under multiple different gaseous-pressures, can guarantee again the anoxia protection arrangement Properties Control system that its cut-off point is qualified.
In order to achieve the above object, the present invention has following technical scheme:
The anoxia protection arrangement Properties Control system of a kind of applicable various gas type of the present invention and air pressure, comprise installing rack, induction tunnel, thermocouple, ignition electrode, described induction tunnel, thermocouple, ignition electrode is separately fixed on installing rack, described induction tunnel inside is provided with internal thread and screw thread step, internal thread is connected with below nozzle, screw thread top stepped portions is provided with combustion gas and first the first hybrid channel of mixing of extraneous air, and on this step, there are two symmetrical wind holes, Feng Kong aperture is 2.6 ± 0.2mm, above the first hybrid channel, be provided with the second hybrid channel that internal diameter is less than the first hybrid channel, described gas nozzle is provided with two steps, shoulder height is greater than induction tunnel Shang Feng hole internal diameter, Qie Fengkong position in this step bottom between top, distance between nozzle pore top planes and induction tunnel the first bottom, hybrid channel is 1.5-2mm, the step drop two of nozzle top is greater than 1mm, described ignition electrode end is positioned at the outside of induction tunnel top inner wall.
Wherein, described the second hybrid channel internal diameter is 4.0mm, and induction tunnel total length is 45mm.
Wherein, described nozzle pore is when anoxia protection arrangement adopts butane, and the internal diameter of nozzle pore is 0.15 ± 0.02mm.
Wherein, described nozzle pore is when anoxia protection arrangement adopts liquefied gas, and the internal diameter of nozzle pore is 0.16 ± 0.02mm.
Wherein, described nozzle pore is when anoxia protection arrangement adopts natural gas, and the internal diameter of nozzle pore is 0.24 ± 0.02mm.
The invention has the advantages that:
First, adopt the present invention, can simplify the kind specification of anoxia protection arrangement, reduce operation quantity and the cost of its component processing, production and assembly, and can improve the uniformity of product, can realize standardized production.Secondly; the present invention's conventional anoxia protection arrangement of prior art of comparing; its cut-off point has the advantages that excursion is very wide; can finely tune by part; can obtain and be applicable to as liquefied gas (LPG; Propane), the combustion gas kind such as natural gas (NG), butane (Propane); and under multiple different gaseous-pressures; when being applied to different gas utensil structures and indoor environment; can make anoxia protection arrangement obtain qualified cut-off point and well meet igniting without traditional performance requirements such as Huang Yan, greatly having widened the range of application of anoxia protection arrangement.
Accompanying drawing explanation
Fig. 1-1 is the dismountable anoxic protector of prior art schematic diagram;
Fig. 1-2 is the top view of Fig. 1-1;
Fig. 1-3 are the non-removable anoxic protector of prior art schematic diagram;
Fig. 1-4 are the top view of Fig. 1-3;
Fig. 2 is the schematic diagram of induction tunnel of the present invention;
Fig. 3 is the schematic diagram of nozzle of the present invention;
Fig. 4 is the schematic diagram that induction tunnel of the present invention coordinates with nozzle;
Fig. 5 is the schematic diagram of prior art nozzle edge step drop;
Fig. 6 is the schematic diagram of nozzle edge step drop of the present invention;
Fig. 7 is the schematic diagram of ignition electrode of the present invention end and induction tunnel top inner wall;
Fig. 8 is the dismountable anoxic protector of the present invention schematic diagram;
Fig. 9 is the non-removable anoxic protector of the present invention schematic diagram.
In figure: 1, inductive head; 2, ignition electrode; 3, induction tunnel; 4, fire maker; 5, nozzle cage; 6 ,Feng holes; 7, wire; 8, installing rack one; 8-1, installing rack two; 9, the first hybrid channel; 10, the second hybrid channel; 11, nozzle; 12-1, step drop one; 12-2, step drop two; 13, nozzle pore; 14, the spacing of ignition electrode end and induction tunnel top inner wall; Distance between L12, nozzle pore top planes and induction tunnel the first bottom, hybrid channel.
The specific embodiment
Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Referring to Fig. 1-1 to Fig. 9, the anoxia protection arrangement Properties Control system of a kind of applicable various gas type of the present invention and air pressure, by installing rack, induction tunnel, thermocouple, ignition electrode forms, described induction tunnel, thermocouple, ignition electrode is separately fixed on installing rack, described induction tunnel inside is provided with internal thread and screw thread step, internal thread is connected with below nozzle, screw thread top stepped portions is provided with combustion gas and first the first hybrid channel of mixing of extraneous air, and on this step, there are two symmetrical wind holes, Feng Kong aperture is 2.6 ± 0.2mm, above the first hybrid channel, be provided with the second hybrid channel that internal diameter is less than the first hybrid channel, described gas nozzle is provided with two steps, shoulder height is greater than induction tunnel Shang Feng hole internal diameter, Qie Fengkong position in this step bottom between top, distance between nozzle pore top planes and induction tunnel the first bottom, hybrid channel is 1.5-2mm, the step drop two of nozzle top is greater than 1mm, described ignition electrode end is positioned at the outside of induction tunnel top inner wall.Described the second hybrid channel internal diameter is 4.0mm, and induction tunnel total length is 45mm.Described nozzle pore is when anoxia protection arrangement adopts butane, and the internal diameter of nozzle pore is 0.15 ± 0.02mm.Described nozzle pore is when anoxia protection arrangement adopts liquefied gas, and the internal diameter of nozzle pore is 0.16 ± 0.02mm.Described nozzle pore is when anoxia protection arrangement adopts natural gas, and the internal diameter of nozzle pore is 0.24 ± 0.02mm.
The feature of induction tunnel design of the present invention is:
<1>adopt the second hybrid channel of less internal diameter.Compare internal diameter 4.4mm～4.5mm that prior art is used, the internal diameter that design of the present invention adopts is 4.0mm;
The quantity in < 2 >Feng holes is fixed.Adopt 2 Ge Feng holes, and symmetrical with respect to the central shaft of the first hybrid channel;
< 3 >Feng Kong aperture specifications are fixing a kind of.Prior art Feng Kong aperture is 2.7mm～Φ 4.5mm, and specification is various, and the present invention fixing employing Feng Kong aperture is 2.6 ± 0.2mm, only a kind of specification;
<4>induction tunnel total length L is fixed.And prior art is 40mm～45mm, the present invention adopts induction tunnel total length 45mm.
The feature of nozzle arrangements of the present invention, is shown in Fig. 3, Fig. 4.
Nozzle is provided with two steps, shoulder height is than the large 1-3mm of induction tunnel Shang Feng hole internal diameter size, and design Feng Kong position in step bottom between top, then by the external diameter size of Control Nozzle stepped portions, can control the amount that air enters, thereby realize the Properties Control to ODS cut-off point.
In addition, in the present invention, the new design feature that also will increase is:
<1>the first hybrid channel adopts the actual effectively shorter structure of mixing length L12, sees Fig. 4.After design nozzle and induction tunnel are seated, nozzle pore top planes and induction tunnel the first bottom, hybrid channel, the spacing between the first hybrid channel and the initial surface of the second hybrid channel transition round platform namely, the effective length that prior art ODS adopts mostly is L12=3mm～15mm, the present invention's design is less, as: L12=2mm;
<2>nozzle of nozzle arrangements inside and outside nozzle cage fit structure are optimized.
On the nozzle cage of prior art, the installation position top structure of nozzle is designed to the step that drop is very little more, and if step internal diameter is 3mm, the step internal diameter that its top combustion gas appears is 2.8mm.Nozzle mostly is thinner stainless steel material, and punch forming also heads into nozzle cage through thimble.
In fact, because nozzle top shape can be because the top outer chamfering of himself, and thimble heads into generation distortion while moving, therefore after packing nozzle cage into, usually because this step drop on nozzle cage is too little, form the uncertain effect shown in Fig. 5, the effect that can not get design expectation, finally causes nozzle pore position upper-lower position to differ, and has influence on stability and the uniformity of ODS performance.
For this reason, in project organization of the present invention, strengthen this step drop, from the 0.2mm～0.4mm of prior art, add greatly more than 1mm, from the actual check texts that can't affect nozzle pore, thereby after guaranteeing that nozzle heads into and puts in place, be directly that the top planes at nozzle pore place overlaps with this step drop face, the location consistency of nozzle pore while guaranteeing to produce in enormous quantities, effect is shown in Fig. 6;
<3>adopt the nozzle pore of less and fixed-size internal diameter, coordinate with the first hybrid channel, second hybrid channel of induction tunnel, especially the second hybrid channel of newly-designed little internal diameter on induction tunnel, make ODS flame there is better performance, have and be more prone to without yellow flame, be easier to high pressure low temperature igniting, the optional scope of cut-off point is larger, as:
Butane (Butane): nozzle pore internal diameter 0.15 ± 0.02mm, prior art is 0.19 ± 0.02mm;
Liquefied gas (LPG): nozzle pore internal diameter 0.16 ± 0.02mm, routine is 0.19 ± 0.02mm;
Natural gas (NG): nozzle pore internal diameter 0.24 ± 0.02mm, routine is 0.35 ± 0.2mm, ever-burning flame;
<4>configure suitable nozzle od, as shown in Figure 3.Wherein, the oxygen that butane and liquefied gas need is more, therefore regulates and controls external diameter larger, and the oxygen that natural gas needs is less, for example, so regulation and control external diameter is less:
Butane (Butane): nozzle od 4mm～6mm;
Liquefied gas (LPG): nozzle od 4mm～6mm;
Natural gas (NG): nozzle od 5.5mm～7mm; ;
The present invention also adopts the low EVAC of ignition electrode, effect is shown in Fig. 7, to guarantee the end position that electric spark of ignition electrode wire electrode, beyond the endoporus of induction tunnel Mian hybrid channel, avoid this wire electrode end, because stretching into the main flame zone of ODS, ODS performance is produced to how unsettled disturbing factor.
Consider that the second hybrid channel internal diameter and nozzle air vent aperture are all less, the flame finally producing is less, therefore while being applied on ODS, the installation sites such as induction tunnel, ignition electrode, thermocouple are moved to 5-10mm on the whole, to guarantee that ODS can light gas utensil.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give all embodiments exhaustive.Every still row in protection scope of the present invention of apparent variation that technical scheme of the present invention extends out or change that belong to.
Claims (5)
1. the anoxia protection arrangement Properties Control system of an applicable various gas type and air pressure, comprise installing rack, induction tunnel, thermocouple, ignition electrode, described induction tunnel, thermocouple, ignition electrode is separately fixed on installing rack, it is characterized in that: described induction tunnel inside is provided with internal thread and screw thread step, internal thread is connected with below nozzle, screw thread top stepped portions is provided with combustion gas and first the first hybrid channel of mixing of extraneous air, and on this step, there are two symmetrical wind holes, Feng Kong aperture is 2.6 ± 0.2mm, above the first hybrid channel, be provided with the second hybrid channel that internal diameter is less than the first hybrid channel, described gas nozzle is provided with two steps, shoulder height is greater than induction tunnel Shang Feng hole internal diameter, Qie Fengkong position in this step bottom between top, distance between nozzle pore top planes and induction tunnel the first bottom, hybrid channel is 1.5-2mm, the step drop two of nozzle top is greater than 1mm, described ignition electrode end is positioned at the outside of induction tunnel top inner wall.
2. according to the anoxia protection arrangement Properties Control system of a kind of applicable various gas type claimed in claim 1 and air pressure, it is characterized in that: described the second hybrid channel internal diameter is 4.0mm, and induction tunnel total length is 45mm.
3. according to the anoxia protection arrangement Properties Control system of a kind of applicable various gas type claimed in claim 1 and air pressure, it is characterized in that: described nozzle pore is when anoxia protection arrangement adopts butane, and the internal diameter of nozzle pore is 0.15 ± 0.02mm.
4. according to the anoxia protection arrangement Properties Control system of a kind of applicable various gas type claimed in claim 1 and air pressure, it is characterized in that: described nozzle pore is when anoxia protection arrangement adopts liquefied gas, and the internal diameter of nozzle pore is 0.16 ± 0.02mm.
5. according to the anoxia protection arrangement Properties Control system of a kind of applicable various gas type claimed in claim 1 and air pressure, it is characterized in that: described nozzle pore is when anoxia protection arrangement adopts natural gas, and the internal diameter of nozzle pore is 0.24 ± 0.02mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210218876.4A CN103512056A (en) | 2012-06-26 | 2012-06-26 | Performance control system of oxygen-deficit protection device suitable for various flue gas types and gas pressures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210218876.4A CN103512056A (en) | 2012-06-26 | 2012-06-26 | Performance control system of oxygen-deficit protection device suitable for various flue gas types and gas pressures |
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| CN103512056A true CN103512056A (en) | 2014-01-15 |
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| CN201210218876.4A Pending CN103512056A (en) | 2012-06-26 | 2012-06-26 | Performance control system of oxygen-deficit protection device suitable for various flue gas types and gas pressures |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2421550Y (en) * | 2000-01-28 | 2001-02-28 | 南京斯奥欣电气具有限公司 | Anoxycausis protector |
| US20020160326A1 (en) * | 2001-04-26 | 2002-10-31 | David Deng | Gas pilot system and method having improved oxygen level detection capability and gas fueled device including the same |
| CN201028526Y (en) * | 2007-04-04 | 2008-02-27 | 高永� | Oxygen-deficiency protecting equipment |
| CN101358743A (en) * | 2007-07-31 | 2009-02-04 | 深圳市贝来科技有限公司 | Gas sensing type anoxia protection arrangement and test method thereof |
| CN202757157U (en) * | 2012-06-26 | 2013-02-27 | 宁波市比利仕燃器科技有限公司 | Hypoxia protection device performance control system suitable for various gas types and gas pressures |
-
2012
- 2012-06-26 CN CN201210218876.4A patent/CN103512056A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2421550Y (en) * | 2000-01-28 | 2001-02-28 | 南京斯奥欣电气具有限公司 | Anoxycausis protector |
| US20020160326A1 (en) * | 2001-04-26 | 2002-10-31 | David Deng | Gas pilot system and method having improved oxygen level detection capability and gas fueled device including the same |
| CN201028526Y (en) * | 2007-04-04 | 2008-02-27 | 高永� | Oxygen-deficiency protecting equipment |
| CN101358743A (en) * | 2007-07-31 | 2009-02-04 | 深圳市贝来科技有限公司 | Gas sensing type anoxia protection arrangement and test method thereof |
| CN202757157U (en) * | 2012-06-26 | 2013-02-27 | 宁波市比利仕燃器科技有限公司 | Hypoxia protection device performance control system suitable for various gas types and gas pressures |
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Application publication date: 20140115 |
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