CN101975405A - Supercharged boiler deflagration-preventing device and method - Google Patents
Supercharged boiler deflagration-preventing device and method Download PDFInfo
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- CN101975405A CN101975405A CN 201010270881 CN201010270881A CN101975405A CN 101975405 A CN101975405 A CN 101975405A CN 201010270881 CN201010270881 CN 201010270881 CN 201010270881 A CN201010270881 A CN 201010270881A CN 101975405 A CN101975405 A CN 101975405A
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Abstract
The invention provides a supercharged boiler deflagration-preventing device and method. The supercharged boiler deflagration-preventing device comprises a sampling device, an oil-gas concentration detection device and a warning device. The oil-gas concentration detection device comprises a sampling probe, a filter, a cooling system, an automatic extracting device and a sampling chamber. The sampling probe is inserted into a boiler furnace, oil gas at the periphery of the sampling probe is extracted by the automatic extracting device, filtered and cooled to enter the sampling chamber, the mixing gas is extracted from the chamber by the oil-gas concentration detection device and subjected to catalytic combustion in a catalytic combustion device, the produced combustion product is analyzed by a gas analyzer, the gas analyzer displays the oil-gas concentration and compares the concentration with a setting value so as to determine whether to warn, and the warning device warns when needing alarm. The invention can be applied to the operation protection of land and ship supercharged boilers.
Description
Technical field
The present invention relates to a kind of safety guard of boiler.Specifically a kind of device that prevents the supercharged steam generator furnace puff.The invention still further relates to a kind of method for security protection of boiler.
Background technology
When the mixing of oil gas and air reached finite concentration in the supercharged steam generator burner hearth, one meets naked light will blast, and concentration at this moment is called explosion limit, and the concentration limit of blast is divided into upper and lower bound.The concentration of mist, in explosion limit with interior danger with blast.In case blast, will cause stove to ruin the major accident that the people dies.So general boiler is all installed explosion-protection equipment, carries out pressure release when the boiler detonation, prevents furnace explosion.
Application number is to disclose the explosion-proof burning device of a kind of boiler in 02232279.5 the Chinese patent file, and housing one side is established burner, is provided with combustion chamber, tubular type heating surface in the housing.Be connected to tube connector on the combustion chamber, tube connector one end communicates with inside, combustion chamber, and the other end is positioned under the liquid level of opening reservoir.When detonation took place in the boiler internal combustion chamber, huge instantaneous pressure was discharged in the opening reservoir along tube connector, and liquid medium is dispersed, and internal pressure of combustion chamber is descended rapidly, thereby has protected equipment, avoids the generation of accidental wound people incident.
Chinese patent application number is to disclose a kind of hydrostat in 96222485 the patent document, for being installed in the explosion-protection equipment on the boiler uptake, have a T type shell that is communicated with boiler uptake, this T type shell is positioned on the circumference side of smoke box, its central axis becomes a downward acute angle with horizontal plane, cover one deck rupture pressure disc at its port with flange and bolt clamping.Compare with existing explosion-protection equipment, have better security and reliability, in case pressure release, combustion gas can not injure the operating personnel that are positioned on the smoke box end face in the burner hearth, and the compressive property decision overload rating pressure of rupture pressure disc has been removed manual adjustment from.
The boiler explosion precaution comprises two aspects, type fire-fighting protection device, and pressure control belongs to working procedure control, notes abnormalities, and carries out interlock protection.Handle according to burner hearth abnormal combustion situation, prevent that detonation from taking place, the present technology of this measure is very complete, use also relatively wider, effect is also relatively good, but the boiler that these devices are installed is in operation and in addition deflagration accident having takes place often, except artificial factor, also has the limitation of this protection here.Existing explosion-protection equipment can not be controlled the generation of detonation, can only the back take place in detonation and by timely pressure release burner hearth be protected.
Summary of the invention
The object of the present invention is to provide a kind of have analysis, warning function, can prevent the explosion-proof burning device of supercharged steam generator of detonation.The present invention also aims to provide a kind of supercharged steam generator to prevent deflagration method.
The object of the present invention is achieved like this:
The explosion-proof burning device of supercharged steam generator of the present invention comprises sampling apparatus, gas concentration checkout gear and warning device; Described gas concentration sampling apparatus comprises sampling probe, filter, cooling system, Automatic Extraction device and sampling cavity, sampling probe inserts in the boiler furnace, sampling probe is connected with filter, filter is connected with the Automatic Extraction device through cooling system, and the Automatic Extraction device connects sampling cavity again; The gas concentration checkout gear is made up of test probe, catalytic combustion system, gas composition analyzer and concentration display unit, test probe extracts gaseous mixture from adopting in the chamber, carry out catalytic combustion in catalytic combustion system, the combustion product of generation shows gas concentration by the gas analyzer analysis and by the concentration display unit; The signal of gas analyzer output connects warning device behind signal comparator.
The anti-deflagration method of supercharged steam generator of the present invention is: adopt by comprising sampling apparatus, the explosion-proof burning device of supercharged steam generator that gas concentration checkout gear and warning device are formed, the gas concentration sampling apparatus is by sampling probe, filter, cooling system, Automatic Extraction device and sampling cavity are formed, sampling probe inserts in the burner hearth, by the Automatic Extraction device oil gas around the sampling probe is extracted out continuously, filter through filter, enter sampling cavity after being cooled to meet the temperature of oil and gas detection matching requirements by cooling system again, the gas concentration checkout gear is by test probe, catalytic combustion system, gas composition analyzer and concentration display unit, test probe extracts gaseous mixture from adopting in the chamber, in catalytic combustion system, carry out catalytic combustion, the combustion product that produces is by the gas analyzer analysis, show gas concentration and contrast judgement and whether report to the police, report to the police as needs and then report to the police by warning device with setting value.
Described whether the warning with setting value contrast judgement is that gas concentration is lower 25% o'clock than LEL, and the warning device one-level is reported to the police, and reminds operating personnel to check fault; Gas concentration is lower 10% o'clock than LEL, and the warning device secondary is reported to the police and boiler is carried out interlock protection, and boiler is out of service.
The present invention is according to furnace puff mechanism and condition, by detecting the boiler furnace gas concentration, when fuel oil and air melting concn enter percent volume to volume be: in the 1.2%-6% scope, think to have possessed the primary condition of detonation, report to the police, reach the purpose that prevents detonation.
Explosion limit scope when mixing with fuel oil according to air; by the gas concentration checkout gear; detect gas concentration in the burner hearth; in case gas concentration is lower 25% o'clock than LEL, the explosion-protection equipment one-level is reported to the police, and reminds operating personnel to check fault; gas concentration is lower 10% o'clock than LEL; the explosion-protection equipment secondary is reported to the police and boiler is carried out interlock protection, and boiler is out of service, thereby the protection boiler avoids blast to take place.
The explosion-proof burning device of supercharged steam generator of the present invention comprises sampling apparatus, gas concentration checkout gear and warning device.The gas concentration sampling apparatus comprises: compositions such as sampling probe, filter, cooling system, Automatic Extraction device, sampling cavity.This sampling apparatus is by inserting the sampling probe in the burner hearth, and oil gas is extracted out continuously around will pop one's head in by the Automatic Extraction device, through the filter filtration, again by cooling system, enters sampling cavity after being cooled to meet the temperature of oil and gas detection matching requirements.But the oil gas fuel feeding gas checkout gear in the sampling cavity detects.
Gas concentration checkout gear and warning device comprise that test probe, catalytic combustion system, gas composition analyzer and concentration display unit and warning device are formed.This device extracts gaseous mixture from adopting in the chamber, carries out catalytic combustion in probe, and the combustion product of generation is by the gas analyzer analysis and show gas concentration, with the setting value contrast, judges and whether reports to the police.
This at the new method and the device that prevent generation detonation of supercharged steam generator burner hearth or blast, can be applicable to the land and use and the Turbo-charged Marine Boiler running protection.
Description of drawings
Fig. 1 supercharged steam generator explosion-protection equipment schematic diagram;
Fig. 2 sampling apparatus structure diagram;
Fig. 3 fuel oil concentration detects and the warning device schematic diagram.
The specific embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
As shown in Figure 1, the explosion-proof burning device of supercharged steam generator comprises sampling apparatus 0, gas concentration checkout gear 6 and warning device 7.
As shown in Figure 2, gas concentration sampling apparatus 0 is made up of sampling probe 1, filter 2, cooling system 3, Automatic Extraction device 4, sampling cavity 5 etc.Sampling probe 1 meets material by high temperature resistant (1500 ℃) to be made, shock-resistant, corrosion-resistant.Cooling system 3 is double pipe heat exchangers, and flue gas is walked in the pipe, and cooling water is walked between pipe, and the exhanst gas outlet temperature is regulated by the flow of cooling water.
As shown in Figure 3, gas concentration detects with warning device and is made up of test probe 9, catalytic combustion system 10, gas composition analyzer 11, gas concentration display unit 12, signal comparator 13, voice guard 14, visual alarm 15 and vibrations alarm 16.
Sampling probe 1 inserts in the boiler furnace 8, and probe is connected by flange with the furnace wall, and the insertion position and the degree of depth are determined according to the boiler concrete structure.During sampling, the aspiration pump work in the Automatic Extraction device 4, probe inlet high ambient temperatures oil gas is drawn out of, through filter 2 impurity screenings, again by entering sampling cavity 5 after cooling system 3 coolings.The gas concentration checkout gear extracts gas mixture by test probe 9 from sampling cavity 5; enter catalytic combustion system 10 and carry out catalytic combustion; combustion product is analyzed by gas composition analyzer 11; analysis result is given gas concentration display unit 12 and is shown gas concentration; simultaneously the gas concentration signal is sent into signal comparator 13; compare with the LEL value of setting; if greater than 25% of lower limit; then voice guard 14; visual alarm 15 and vibrations alarm 16 carry out one-level and report to the police; if greater than 10% of lower limit; carry out the secondary warning and start boiler interlock protection device, protection of boiler during shutdown period.
This at the new method and the device that prevent supercharged steam generator burner hearth generation detonation, can be applicable to the land and use and the Turbo-charged Marine Boiler running protection.
Claims (4)
1. the explosion-proof burning device of supercharged steam generator comprises sampling apparatus, gas concentration checkout gear and warning device; It is characterized in that: described gas concentration sampling apparatus comprises sampling probe, filter, cooling system, Automatic Extraction device and sampling cavity, sampling probe inserts in the boiler furnace, sampling probe is connected with filter, filter is connected with the Automatic Extraction device through cooling system, and the Automatic Extraction device connects sampling cavity again; The gas concentration checkout gear is made up of test probe, catalytic combustion system, gas composition analyzer and concentration display unit, test probe extracts gaseous mixture from adopting in the chamber, carry out catalytic combustion in catalytic combustion system, the combustion product of generation shows gas concentration by the gas analyzer analysis and by the concentration display unit; The signal of gas analyzer output connects warning device behind signal comparator.
2. the explosion-proof burning device of supercharged steam generator according to claim 1 is characterized in that: described warning device comprises voice guard, visual alarm and vibrations alarm.
3. a supercharged steam generator is prevented deflagration method, it is characterized in that: adopt by comprising sampling apparatus, the explosion-proof burning device of supercharged steam generator that gas concentration checkout gear and warning device are formed, the gas concentration sampling apparatus is by sampling probe, filter, cooling system, Automatic Extraction device and sampling cavity are formed, sampling probe inserts in the burner hearth, by the Automatic Extraction device oil gas around the sampling probe is extracted out continuously, filter through filter, enter sampling cavity after being cooled to meet the temperature of oil and gas detection matching requirements by cooling system again, the gas concentration checkout gear is by test probe, catalytic combustion system, gas composition analyzer and concentration display unit, test probe extracts gaseous mixture from adopting in the chamber, in catalytic combustion system, carry out catalytic combustion, the combustion product that produces is by the gas analyzer analysis, show gas concentration and contrast judgement and whether report to the police, report to the police as needs and then report to the police by warning device with setting value.
4. supercharged steam generator according to claim 3 is prevented deflagration method, it is characterized in that: described whether the warning with setting value contrast judgement is that gas concentration is lower 25% o'clock than LEL, and the warning device one-level is reported to the police, and reminds operating personnel to check fault; Gas concentration is lower 10% o'clock than LEL, and the warning device secondary is reported to the police and boiler is carried out interlock protection, and boiler is out of service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010270881 CN101975405A (en) | 2010-09-03 | 2010-09-03 | Supercharged boiler deflagration-preventing device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010270881 CN101975405A (en) | 2010-09-03 | 2010-09-03 | Supercharged boiler deflagration-preventing device and method |
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| Publication Number | Publication Date |
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| CN101975405A true CN101975405A (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010270881 Pending CN101975405A (en) | 2010-09-03 | 2010-09-03 | Supercharged boiler deflagration-preventing device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278508A (en) * | 2011-06-24 | 2011-12-14 | 煤炭科学研究总院 | Automatic explosion-protection equipment |
| CN107166430A (en) * | 2017-07-12 | 2017-09-15 | 山东省特种设备检验研究院临沂分院 | A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth and detection method |
| CN107308730A (en) * | 2017-08-04 | 2017-11-03 | 中国船舶重工集团公司第七0三研究所 | A kind of Turbo-charged Marine Boiler cascade type fume dust remover |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142107A (en) * | 1983-12-28 | 1985-07-27 | Osaka Gas Co Ltd | Controlling method of burning of solid fuel |
| CN1173612A (en) * | 1996-12-06 | 1998-02-18 | 华北电力大学（北京） | Coal powder self-firing and self-explosion monitoring and forecasting system |
| CN2549321Y (en) * | 2002-06-25 | 2003-05-07 | 毛齐鸣 | Alarm light for coal-mine gas detection |
| CN2909009Y (en) * | 2006-05-08 | 2007-06-06 | 大庆油田自动化仪表有限公司 | On-line monitoring device for boiler explosion-proof |
| CN201300027Y (en) * | 2008-11-24 | 2009-09-02 | 海湾石油设备（北京）有限公司 | An inlet-outlet oil gas concentration analysis system for absorption tower |
-
2010
- 2010-09-03 CN CN 201010270881 patent/CN101975405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142107A (en) * | 1983-12-28 | 1985-07-27 | Osaka Gas Co Ltd | Controlling method of burning of solid fuel |
| CN1173612A (en) * | 1996-12-06 | 1998-02-18 | 华北电力大学（北京） | Coal powder self-firing and self-explosion monitoring and forecasting system |
| CN2549321Y (en) * | 2002-06-25 | 2003-05-07 | 毛齐鸣 | Alarm light for coal-mine gas detection |
| CN2909009Y (en) * | 2006-05-08 | 2007-06-06 | 大庆油田自动化仪表有限公司 | On-line monitoring device for boiler explosion-proof |
| CN201300027Y (en) * | 2008-11-24 | 2009-09-02 | 海湾石油设备（北京）有限公司 | An inlet-outlet oil gas concentration analysis system for absorption tower |
Non-Patent Citations (1)
| Title |
|---|
| 《南京航空航天大学学报》 19960831 顾文照,顾月清,易登录,向小曼 催化燃烧式可燃气体浓度检测技术研究 第511-516页 1-4 第28卷, 第4期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278508A (en) * | 2011-06-24 | 2011-12-14 | 煤炭科学研究总院 | Automatic explosion-protection equipment |
| CN107166430A (en) * | 2017-07-12 | 2017-09-15 | 山东省特种设备检验研究院临沂分院 | A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth and detection method |
| CN107308730A (en) * | 2017-08-04 | 2017-11-03 | 中国船舶重工集团公司第七0三研究所 | A kind of Turbo-charged Marine Boiler cascade type fume dust remover |
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Application publication date: 20110216 |