CN107166430A - A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth and detection method - Google Patents
A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth and detection method Download PDFInfo
- Publication number
- CN107166430A CN107166430A CN201710563578.1A CN201710563578A CN107166430A CN 107166430 A CN107166430 A CN 107166430A CN 201710563578 A CN201710563578 A CN 201710563578A CN 107166430 A CN107166430 A CN 107166430A
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- China
- Prior art keywords
- control device
- burner hearth
- explosion
- liquid fuel
- gas liquid
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/06—Sampling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/02—Starting or ignition cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/12—Burner simulation or checking
- F23N2227/16—Checking components, e.g. electronic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/20—Warning devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/04—Gaseous fuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The application is related to room combusting boiler burner hearth field of explosion, a kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth is provided, including burner, burner body rear end is provided with the blower fan that motor drives, blower fan is connected by air channel with combustion head, and inside is provided with fuel supply system, igniter, flame monitoring apparatus, external control device, control device control combustion system is purged to burner hearth, is lighted a fire, supplies fuel, and ensure safety burning.By monitor in the combusting boiler burner hearth air of room remaining combustible component content alarm and with the chain device for realizing safeguard protection of ignition procedure, it is adaptable to room combusting boiler is particularly suitable for use in the room combusting boiler of the volatile fuel with explosion danger.
Description
Technical field
The present invention relates to room combusting boiler burner hearth field of explosion, and in particular to a kind of gas liquid fuel boiler burner hearth is explosion-proof to be surveyed
Control device and detection method.
Background technology
National security specification is provided to the protection of room combusting boiler safety interlocking, it is desirable to must have ignition procedure, to point
Ventilation, constant ventilation time before fire are made that regulation, and flame-out protection device action regulation should be guaranteed that and automatically cut off combustion
Material supply and necessary purging.Air inducing tripping operation automatically cuts off air-supply and fuel supply, and air-supply tripping operation automatically cuts off fuel supply.It is logical
Safety ignition can just be started by crossing purging before igniting, purging effect be ensured by purge time and firing time interval, still one
Have under fixed condition and fire risk, this is primarily due to, and purging effect is related to furnace cavity structure, and the organic heat of such as some liquid phases is carried
Body boiler is limited by coil arrangement, is arranged that the fire door area space of combustor end is open and is unfavorable for purging displacement.Fuel cutoff valve is easy
It is not closed completely and causes leakage, frequent starting, unsuccessful be repeated several times of especially lighting a fire is lighted a fire, and purging control program fails or overhauled
State, by when artificial disassemble with more firing danger.Prior art lacks dense to fuel content in furnace cavity air
The detection control of degree is chain.
The content of the invention
It is of the invention directly combustible content in furnace cavity gas detect and related purging chain on this basis
Iganition control system, realizes the effective control lighted a fire to boiler furnace.
The measurement of combustible component content uses catalytic combustion technology, has widest applicability to fuel band, is used for
The volatile combustible composition of detonation especially easily occurs for all combustible components.
A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth, including burner, burner body rear end is provided with electricity
The blower fan that machine drives, blower fan is connected by air channel with combustion head, and inside is provided with fuel supply system, igniter, flame monitoring
Device, external control device, control device control combustion system is purged to burner hearth, is lighted a fire, supplies fuel, and ensure safety combustion
Burn.Combustible concentration monitoring position selection is in ignition zone, and ignition zone is that occur the key dangerous region that igniting is fired, especially
It is to be difficult to be purged near burner head, main chamber space is open, purging replacement rate is low, other convection heat transfer' heat-transfer by convection region phases
Pair cross-section product is small to be easy to purge, and main chamber is more difficult to reach the complete effect of purging under the conditions of identical purging.
Therefore acquisition port is located at combustion head centre position, and stretches out 10 ~ 15 millimeters of samplings from side, and probe tube uses Ovshinsky
Body stainless steel material is made.
The probe tube is made up of exotic material, and the acquisition port end of probe tube is located at burning head side, other end connection
To catalytic combustion type sensor, catalytic combustion type sensor is connected with control device.
Probe tube is located in burner air channel, and air cooling, convenient arrangement are purged using burner.
Furnace cavity temperature has direct relation with detonation, and it is a little safe that temperature is fired higher than catching fire, when temperature is less than most
Low flammability temperature there is combustible and assemble the possibility fired that causes to light a fire again, therefore monitoring fire box temperature, and monitoring range exists
Between normal temperature and fuel ignition temperature, temperature sensor also is provided with catalytic combustion type sensor, temperature sensor fires with catalysis
Burning formula sensor is connected, and the temperature is modified as the preset value to catalytic combustion type sensor.This technology can realize height
Temperature is lower to be detected and uses temperature difference amendment, is influenceed by fire box temperature, general higher, the different temperatures of fire box temperature of especially lighting a fire again
Under deviate corresponding with temperature difference can be produced to the principle of the monitoring result of fuel concentration based on catalysis burning.People in the art
Member can be incorporated to measuring system according to the Inter-laboratory comparisons result of different fuel setting correction value and be corrected automatically.
The present apparatus is generally possible to 250 °C of tolerance using temperature-resistant material, and 70 °C of highest of measurement is revealed far above general gas
Temperature, but burner hearth still has more than the possibility of this temperature, particularly to there is the boiler of accumulation of heat stable combusting device, by probe tube and combustion
Burner arranges that probe tube uses heat-resisting austenitic stainless steel material together, is arranged in the ventilating duct of burner and enters burner hearth, from
Combustion head side is drawn, and is sampled in the latter end of purge time, can effectively be cooled down testing sample, realized to burner hearth higher temperature shape
Detection under state, can meet the detection of had family right boiler furnace fuel losses.
If unqualified, purge time continues to extend a purge time interval, until it is qualified, stop purging at preset timed intervals
Starting ignition.
Helical form can be made in the probe tube being arranged in increase cooling effect in the ventilating duct of burner, or use can
Curved Corrugated pipe, is easy to the cooling to sample gas.
The detection method used is：1）After work initial stage or shutdown, boiler-burner fuel supply device stops, point
Fiery device is closed；2）Control device control carries out purging motor and purged according to prefixed time interval；3）The end of purging action
End, sampling blower fan starts, to the gas sample near combustion head；4）Catalytic combustion type sensor sends out data with temperature sensor
Control device is delivered to, control device is modified to the temperature preset value of catalytic combustion type sensor, and judges that fuel gas is dense
Degree；5）If combustable gas concentration is higher than setting value, repeat step 2）To step 5）Until combustable gas concentration is less than setting value；If
Combustable gas concentration is less than setting value, completes control device control ignition procedure after default purging.
By monitoring in the combusting boiler burner hearth air of room remaining combustible component content alarm and pacifying with chain realize of ignition procedure
The device of full guard, it is adaptable to which room combusting boiler is particularly suitable for use in the room combusting boiler of the volatile fuel with explosion danger.
Brief description of the drawings
Fig. 1 schematic structural views of the invention；
1. blower fan in figure, 2. combustion heads, 3. stable flame pans, 4. cartridges, 5. control devices, 6. probe tubes, 7. catalytic combustion types are passed
Sensor.
Embodiment
As shown in figure 1, the application provides a kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth, it is of the prior art
Burner body rear end is provided with the impeller 1 that motor drives, the fuel supply dress that inside is constituted provided with pump and the grade of cartridge 4 part
Put, electronic ignition device（It is not drawn into figure）And control device 5, control device control burner burner hearth is purged, lighted a fire
And the action such as fuel supply, blower fan connected by the air channel on top with combustion head.The improvement is that, probe tube is provided with air channel
6, the probe tube is made up of exotic material, and the acquisition port end of probe tube is located at combustion head side, and the other end is by sampling blower fan
Catalytic combustion type sensor 7 is connected to, catalytic combustion type sensor is connected and centralized arrangement with control device.Sampling blower fan will fire
Gas near burning head is sent to catalytic combustion type sensor and detected.
Temperature sensor is provided near the thief hatch of probe tube, temperature sensor is connected with catalytic combustion type sensor, right
The temperature preset value of catalytic combustion type sensor is modified.Acquisition port is located at combustion head centre position, and stretches out side 10 ~ 15
Millimeter sampling, probe tube is made of austenitic stainless steel material.
According to the explosion-proof measure and control device of gas liquid fuel boiler burner hearth presented above, the detection method of use is：1）
After work initial stage or shutdown, boiler-burner fuel supply device stops, and igniter is closed；2）Control device control is carried out
Purging motor is purged according to prefixed time interval；3）The end of purging action, sampling blower fan starts, near combustion head
Gas sample；4）Catalytic combustion type sensor sends data to control device with temperature sensor, and control device fires to catalysis
The temperature preset value of burning formula sensor is modified, and judges combustable gas concentration；5）If combustable gas concentration is higher than setting value,
Repeat step 2）To step 5）Until combustable gas concentration is less than setting value；If combustable gas concentration is less than setting value, complete pre-
If control device control igniter and fuel supply device work after purging.
Embodiment one
Under applied at elevated temperature environment, extraneous air carries out preheating and is delivered in burner, because preheated air, burner match somebody with somebody wind-warm syndrome
Degree is higher, using high temperature resistant catalytic combustion type sensor, by high-temperature component and the heat-insulated processing of signal transacting electronic component, such as heat-insulated
Plate etc., it is possible to achieve less than 250 degree combustable gas concentrations are detected.
Austenitic stainless steel probe tube enters burner hearth by burner air channel, is drawn in the side of combustion head, according to volatilization
Property fuel density and air weight sample tap be arranged on above or below combustion head or middle part, middle part position is located in the present embodiment
Put, stretch out 10 ~ 15 millimeters of samplings of combustion head.
Temperature probe built in catalytic combustion type sensor air inlet, synchronizes thermometric by temperature sensor and realizes the temperature difference
Automatic amendment, by testing result input control device, control purging action.Sample, if unqualified, blow in the latter end of purge time
Flyback time continues to extend a purge time interval, if qualified, stops purging starting ignition at preset timed intervals.
Embodiment two
If using non-preheated air, catalytic combustion type sensor air inlet can be cooled at 70 DEG C, using common catalyzed combustion-type
Sensor, without heat-insulated processing.
Claims (5)
1. a kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth, including burner, burner body rear end are provided with motor
The blower fan of drive, blower fan is connected by air channel with combustion head, and inside is provided with fuel supply system, igniter, flame monitoring dress
Put, external control device, control device control combustion system is purged to burner hearth, lights a fire, supplies fuel, and ensure safety combustion
Burn, it is characterised in that probe tube is provided with the air channel, the probe tube is made up of exotic material, the acquisition port end of probe tube
Positioned at burning head side, the other end is connected to catalytic combustion type sensor, and catalytic combustion type sensor is connected with control device；
Temperature sensor is provided with inside catalytic combustion type sensor, the testing result of catalytic combustion type sensor is entered according to temperature preset value
Row amendment.
2. the explosion-proof measure and control device of gas liquid fuel boiler burner hearth according to claim 1, it is characterised in that the collection
Mouth is located at burning head side, and 10 ~ 15 millimeters of stretching is sampled.
3. the explosion-proof measure and control device of gas liquid fuel boiler burner hearth according to claim 2, it is characterised in that the sampling
Pipe is made of austenitic stainless steel material.
4. the explosion-proof measure and control device of gas liquid fuel boiler burner hearth according to claim 3, it is characterised in that the sampling
Pipe is arranged in air channel inside spin, or uses flexible bellows.
5. the detection method that the explosion-proof measure and control device of gas liquid fuel boiler burner hearth according to claim 4 is implemented, its
It is characterised by, comprises the following steps：
1）Boiler-burner fuel supply device stops, and igniter is closed；
2）Control device control carries out purging motor and purged according to prefixed time interval；
3）The end of purging action, sampling blower fan starts, to the gas sample near combustion head；
4）Catalytic combustion type sensor sends data to control device with temperature sensor, and control device is passed to catalytic combustion type
The temperature preset value of sensor is modified, and judges combustable gas concentration；
6）If combustable gas concentration is higher than setting value, repeat step 2）To step 5）Until combustable gas concentration is less than setting value；
If combustable gas concentration is less than setting value, control device control igniter and fuel supply device work after default purging are completed
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563578.1A CN107166430A (en) | 2017-07-12 | 2017-07-12 | A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563578.1A CN107166430A (en) | 2017-07-12 | 2017-07-12 | A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107166430A true CN107166430A (en) | 2017-09-15 |
Family
ID=59818310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710563578.1A Pending CN107166430A (en) | 2017-07-12 | 2017-07-12 | A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107166430A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758294A (en) * | 2020-06-01 | 2021-12-07 | 中国石化工程建设有限公司 | Control method for safe combustion of industrial furnace |
| WO2023184687A1 (en) * | 2022-03-30 | 2023-10-05 | 常德市三一机械有限公司 | Combustor control method and apparatus, and combustor and asphalt mixing plant |
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| CN1715897A (en) * | 2005-07-12 | 2006-01-04 | 赵飞 | Constant temperature combustable gas concentration detector |
| CN101576313A (en) * | 2008-05-07 | 2009-11-11 | 中冶焦耐自动化系统有限公司 | Method for controlling automatic ignition of tube furnace |
| CN201672513U (en) * | 2010-03-05 | 2010-12-15 | 华油惠博普科技股份有限公司 | Explosion-proof gas burner |
| CN101975405A (en) * | 2010-09-03 | 2011-02-16 | 哈尔滨工程大学 | Supercharged boiler deflagration-preventing device and method |
| CN102944020A (en) * | 2012-12-05 | 2013-02-27 | 中煤科工集团重庆研究院 | Mash gas incineration system with metal fibre burner |
| CN207455629U (en) * | 2017-07-12 | 2018-06-05 | 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 |
-
2017
- 2017-07-12 CN CN201710563578.1A patent/CN107166430A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715897A (en) * | 2005-07-12 | 2006-01-04 | 赵飞 | Constant temperature combustable gas concentration detector |
| CN101576313A (en) * | 2008-05-07 | 2009-11-11 | 中冶焦耐自动化系统有限公司 | Method for controlling automatic ignition of tube furnace |
| CN201672513U (en) * | 2010-03-05 | 2010-12-15 | 华油惠博普科技股份有限公司 | Explosion-proof gas burner |
| CN101975405A (en) * | 2010-09-03 | 2011-02-16 | 哈尔滨工程大学 | Supercharged boiler deflagration-preventing device and method |
| CN102944020A (en) * | 2012-12-05 | 2013-02-27 | 中煤科工集团重庆研究院 | Mash gas incineration system with metal fibre burner |
| CN207455629U (en) * | 2017-07-12 | 2018-06-05 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758294A (en) * | 2020-06-01 | 2021-12-07 | 中国石化工程建设有限公司 | Control method for safe combustion of industrial furnace |
| WO2023184687A1 (en) * | 2022-03-30 | 2023-10-05 | 常德市三一机械有限公司 | Combustor control method and apparatus, and combustor and asphalt mixing plant |
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