CN2692508Y - Safety monitoring liquified petroleum gas combustion system - Google Patents
Safety monitoring liquified petroleum gas combustion system Download PDFInfo
- Publication number
- CN2692508Y CN2692508Y CN 200320110980 CN200320110980U CN2692508Y CN 2692508 Y CN2692508 Y CN 2692508Y CN 200320110980 CN200320110980 CN 200320110980 CN 200320110980 U CN200320110980 U CN 200320110980U CN 2692508 Y CN2692508 Y CN 2692508Y
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- CN
- China
- Prior art keywords
- pressure
- petroleum gas
- gas
- blender
- proportioner
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a safety monitoring liquified petroleum gas combustion system. From a liquid state liquefied petroleum gas tank to a burner nozzle, a gasifier and a mixer are arranged in sequence. The utility model is characterized in that the utility model is provided with the constant pressure automatic control device of the mixer. The outlet of the mixer is provided with the pressure stabilizing tank of the mixture gas, and the mixture gas is output via the pressure stabilizing tank and is dispensed to each gas supply branch. In gas supply branches, pressure-reducing valve pipelines are provided respectively and independently; the burner controller of the pressure equalizing control proportional control type is provided simultaneously. The system has stable and safe operation.
Description
Technical field:
The utility model relates to the liquefied petroleum gas combustion system.
Background technology:
Along with expanding economy, liquefied petroleum gas obtains more and more widely application as the energy.At present already used industrial liquefied petroleum gas combustion system is because structure is provided with institute limit, and gasifier is limited to the adaptive capacity of liquefied petroleum gas change of component than greatly the time; Especially under multi-user's operating mode, blender and burner adjustable range are little, can not adapt to flow, pressure and calorific value variation operating mode greatly.Cause the system works less stable.
Technical problem to be solved in the utility model is to avoid above-mentioned existing in prior technology problem, and a kind of stable and reliable operation security monitoring liquefied petroleum gas combustion system is provided.
The technical scheme that the utility model technical solution problem is adopted is:
To burner, including of setting gradually is the gasifier of thermal source with steam and gaseous liquefied oil gas formed the blender that mixes with air from the liquid liquefied petroleum gas basin in the utility model system.
Design feature of the present utility model is:
A, blender constant pressure automaton is set;
B, in the exit of described blender the mist vacuum tank is set, vacuum tank output divides delivers to each air feed branch road;
C, at the front end of each air feed branch road, the pressure-reducing valve pipeline independently is set;
D, Pressure and Control ratio adjustable type burner controller is set, comprise proportioner, flow regulator is set, zero adjuster is set at the compressed air inlet port of proportioner, the pipeline of connection between compressed air inlet port and zero adjuster is set simultaneously at the gas inlet of proportioner.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model adopts the mode of constant pressure supply, promptly at gasifying liquefied petroleum gas with after mixing,, pressure is controlled at combi inlet port to the combustion system supply with a constant compression force, can effectively improve combustion stability.
2, the utility model is provided with the buffering vacuum tank by the exit at blender, with the influence between increase gas storage capability and elimination pipeline crushing and each the combustor nozzle load, thereby guarantees each burner flow abundance, pressure stability.
3, the pressure-reducing valve that independently is arranged on each air feed branch road front end in the utility model makes downstream pressure keep stable under the situation of changes in flow rate, eliminated the interior pressure reduction of air supply pipe to each burner pressure influence, the burner gas manifold is isolated mutually, separate, be not subjected to the influence of burner changes in flow rate, greatly improved combustion stability.
4, the utility model is provided with Pressure and Control ratio adjustable type burner controller, can be adapted to the low-pressure gas supply mode of system well.
5, the utility model security of system, reliable.
The drawing explanation:
Fig. 1 is the utility model system architecture schematic diagram.
Fig. 2 is the utility model Pressure and Control ratio adjustable type burner controller schematic diagram.
Among the figure, 1 gasifier, 2 blenders, 3 blender constant pressure automatons, 4 mist vacuum tanks, 5 air feed branch roads, 6 pressure-reducing valves, 7 proportioners, 8 flow regulators, 9 zero adjusters, 10 pipelines, 11 liquefied petroleum gas air accumulators, 12 burners.
The specific embodiment:
Referring to Fig. 1, to burner 12, including of setting gradually is the gasifier 1 of thermal source with steam and gaseous liquefied oil gas formed the blender 2 that mixes with air from liquid liquefied petroleum gas basin 11 in the present embodiment system.
Shown in the figure, in the present embodiment, blender constant pressure automaton 3 is set.In order to guarantee flameholding, adopt the constant pressure method of supplying, at gasifying liquefied petroleum gas with after mixing, to the combustion system supply, pressure is controlled in the blender import with 27000-31000Pa pressure.When the variation of combustion system pressure exceeded setting range, automatic pressure control device 3 dropped into control.When supply pressure during less than 27000Pa, blender starts automatically; During greater than 31000Pa, blender cuts out automatically, guarantees that the combustion system mixture pressure is constant.
In the present embodiment, in the exit of blender 2 mist vacuum tank 4 is set, vacuum tank 4 outputs divide delivers to each air feed branch road 5.Vacuum tank 4 is in order to increasing gas storage capability and to eliminate influence between pipeline crushing and each the combustor nozzle load, thereby guarantees each burner flow abundance, pressure stability.
Fig. 1 illustrates, and in the present embodiment, at the front end of each air feed branch road 5, disposes separate pressure-reducing valve pipeline respectively.Pressure-reducing valve 6 makes that the mixture pressure definite value is output as 8000-6000Pa behind the valve.And under the situation of changes in flow rate, still keep stable.
Referring to Fig. 2, in the present embodiment, Pressure and Control ratio adjustable type burner controller is set, the concrete proportioner 7 that adopts, flow regulator 8 is set, zero adjuster 9 is set at the compressed air inlet port of proportioner 7 at the gas inlet of proportioner 7, the pipeline 10 of connection between compressed air inlet port and zero adjuster 9 is set simultaneously, makes the fuel gas inlet lateral pressure of proportioner 7 equal air side air inlet pressure.
According to above setting, the mixer outlet gaseous-pressure is 27000-31000Pa in the native system, is subjected to condition restriction, can not in subsequent technique gaseous-pressure be improved.In the present embodiment, different with conventional way is, adopts combustion air as amount initiatively, and control principle then adopts Pressure and Control and ratio to regulate.Be that air regulator 8 and proportioner are realized by the forced air supply injector on this control mode concrete configuration.Compressed air sprays from injector, can regulate flow easily, makes the fuel gas inlet lateral pressure Pg2 of proportioner 7 equal air side inlet pressure Pa2 by zero adjuster 9 simultaneously, thereby makes mixing ratio keep constant; Mixing ratio then can be set by the adjustable type orifice plate of combining with proportioner, and Flow-rate adjustment is undertaken by flow regulator, and the Pg1 that range of flow is pressed by combustion gas, air, the value of Pa1 are determined.
Burner need burn in stove, and the pressure in the stove obviously is different from atmospheric pressure.Therefore, for keeping self-tuning performance, the reference pressure of zero adjuster is not an atmospheric pressure just, but the pressure in the stove that is to say Pg2=Pf＞Patm.Zero adjuster need be set the variation of a working pressure range with compensation Pf for this reason, is set at 850-5000Pa in the native system.According to practice, with air pressure Pa2 as reference pressure.
In order to guarantee safety, normal and operation reliably, on gasifier, also should be provided with self-con-tained units such as safety valve, float-controlled valve, pressure regulator.
In addition, the automatization level of whole system is made every effort to reliable, is convenient to staff's observation and operation to guarantee that device security, operate as normal are principle.Therefore, only the crux parameter is controlled automatically, all the other all can design by manual control.Wherein, control can comprise automatically:
Gasifier liquid level control, adopt float-controlled valve as detect, control element, simple in structure, control is reliable.During operate as normal, the liquefied petroleum gas gas phase is discharged by the float-controlled valve outlet on the top of gasifier and float-controlled valve; Liquid level in gasifier is too high, and near gaseous phase outlet, the ball float in the float-controlled valve is blocked gaseous phase outlet, prevents that liquid phase from entering gas phase, stops the generation of accident.
The control of gasifier outlet pressure, the gasifier exit is provided with pressure regulator, and realization pressure is regulated automatically.
Mixer pressure control in the exit of blender, because of being provided with vacuum tank, utilizes the pressure of regulating in the vacuum tank to open or close mixture control in certain pressure reduction.At this pressure regulative mode, the power gas source of master selector is a 03Mpa compressed air, and the blender control valve utilizes the interior 4000Pa pressure reduction of gaseous mixture vacuum tank as control signal.When the vacuum tank internal pressure is closed mixture control more than or equal to setting value during 31000Pa, thereby master selector is closed; When the vacuum tank internal pressure is less than or equal to setting value 27000Pa, open mixture control, master selector starts.Open and close by master selector, realize mixer pressure control, reach output liquefied petroleum gas and air Mixture calorific value at 12000Kcal/m
3± 5%.
Security monitoring:
Cause stopping working in order to prevent that burner from hindering for some reason when burning; unburned liquefied petroleum gas-air Mixture continues to spray in the stove; safety guard should be set; put out state according to mixture pressure, combustion-supporting compressed air pressure and test burner monitoring fire, and form the control that the interlocking realization is reported to the police with the quick action emergency valve that is installed on the air supply pipe of stokehold.When following situation occurring:
1, has a power failure;
2, mixture pressure reaches lower limit set value 9000Pa;
3, mixture pressure reaches upper limit setting 30000Pa down;
4, compressed air pressure reaches lower limit set value 1.5Kg/cm
2
Quick action emergency valve cuts out automatically, cuts off the mist supply, meanwhile various unusual and flame-out occur bright lamp, alarm equipment alarm on the console.
Remove this part, when liquefied petroleum gas leakage, also can detect by the combustible gas leakage detector, the teletransmission interlock alarm, quick action emergency valve cuts out.
Claims (1)
1, security monitoring liquefied petroleum gas combustion system, to burner (12), including of setting gradually is the gasifier (1) of thermal source with steam and gaseous liquefied oil gas formed the blender (2) that mixes with air from liquid liquefied petroleum gas basin (11) in described system; It is characterized in that:
A, blender constant pressure automaton (3) is set;
B, mist vacuum tank (4) is set in the exit of described blender, vacuum tank output divides delivers to each air feed branch road (5);
C, in described each air feed branch road (5), pressure-reducing valve (6) pipeline independently is set respectively;
D, Pressure and Control ratio adjustable type burner controller is set, comprise proportioner (7), flow regulator (8) is set, zero adjuster (9) is set at the compressed air inlet port of proportioner (7), the pipeline (10) of connection between compressed air inlet port and zero adjuster (9) is set simultaneously at the gas inlet of proportioner (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110980 CN2692508Y (en) | 2003-11-21 | 2003-11-21 | Safety monitoring liquified petroleum gas combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110980 CN2692508Y (en) | 2003-11-21 | 2003-11-21 | Safety monitoring liquified petroleum gas combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2692508Y true CN2692508Y (en) | 2005-04-13 |
Family
ID=34762094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320110980 Expired - Fee Related CN2692508Y (en) | 2003-11-21 | 2003-11-21 | Safety monitoring liquified petroleum gas combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2692508Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050386B (en) * | 2007-02-14 | 2011-04-13 | 兖矿集团有限公司 | Method for online lowering of charge for gasification burner tip |
-
2003
- 2003-11-21 CN CN 200320110980 patent/CN2692508Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050386B (en) * | 2007-02-14 | 2011-04-13 | 兖矿集团有限公司 | Method for online lowering of charge for gasification burner tip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |