CN203533611U - Fuel gas combustion system - Google Patents
Fuel gas combustion system Download PDFInfo
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- CN203533611U CN203533611U CN201320560578.3U CN201320560578U CN203533611U CN 203533611 U CN203533611 U CN 203533611U CN 201320560578 U CN201320560578 U CN 201320560578U CN 203533611 U CN203533611 U CN 203533611U
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- combustion
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- stop valve
- main pipeline
- fuel gas
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Abstract
The utility model discloses a fuel gas combustion system. The fuel gas combustion system comprises a combustion chamber, a fuel gas main pipeline, a fuel gas branch pipeline, an air main pipeline and a center control unit. The fuel gas main pipeline and the air main pipeline are respectively connected with the combustion chamber; a first fuel gas pressure sensor, a first block valve, a second block valve and a second fuel gas pressure sensor are sequentially arranged on the fuel gas main pipeline in the fuel gas flow direction; the fuel gas main pipeline between the first block valve and the second block valve is communicated with one end of the fuel gas branch pipeline, the other end of the fuel gas branch pipeline is connected with the combustion chamber, and the fuel gas branch pipeline is provided with a third block valve and a fourth block valve; an ignition device and a flame detection device are arranged in the combustion chamber. The combustion system is ignited in an igniting mode, the process before igniting, the process of igniting and the process of working combustion can be controlled, and safety accidents caused by a deflagration phenomenon and fuel gas leakage are prevented.
Description
Technical field
The utility model relates to combustion system, relates in particular to a kind of combustion system of combustion gas.
Background technology
At present, in the drying process of mineral wool board, can use combustion gas as thermal source, the hot gas that air blast produces neat gas burner burning is sent into arid region, but using as medium-and-large-sized burner, process in igniting, be easy to occur security incident, as unsuccessful in natural gas fired, enter arid region, may set off an explosion in arid region, or before igniting, natural gas passes into excessive, in combustion chamber, cause detonation, damage equipment, even cause blast, cause serious economic loss and casualties, or when gas source pressure transient, there is larger fluctuation, and combustion gas is when occur to leak, can not put out a fire in time, cause serious security incident etc.
Utility model content
The application provides a kind of combustion system of combustion gas, and it comprises combustion chamber, combustion gas main pipeline, combustion gas branch pipe(tube), gas main duct and centralized control unit;
Described combustion gas main pipeline, described gas main duct are connected with described combustion chamber respectively;
On described combustion gas main pipeline along gas-flow to direction be disposed with the first gaseous-pressure sensor, the first stop valve, the second stop valve, the second gaseous-pressure sensor;
Combustion gas main pipeline between described the first stop valve and described the second stop valve is connected with one end of described combustion gas branch pipe(tube), the other end of described combustion gas branch pipe(tube) is connected with described combustion chamber, and described combustion gas branch pipe(tube) is provided with the 3rd stop valve, the 4th stop valve;
In described combustion chamber, be provided with igniter and flame detecting device;
Described centralized control unit, passing into after air in described combustion chamber, according to the pressure signal of the first gaseous-pressure sensor, is opened described the first stop valve and the 3rd, the 4th stop valve; The signal of the pyrophoric flame that described centralized control unit measures according to described flame detecting device, opens described the second stop valve; The signal of the described work flame that described centralized control unit detects according to described flame detector, controls described igniter and quits work.
Preferably, after described ignition device, described centralized control unit detects aphlogistic signal according to described flame detecting device, controls described the first stop valve, the second stop valve and the 3rd, the 4th stop valve and closes simultaneously.
Preferably, on the described combustion gas main pipeline before described the first gaseous-pressure sensor, be provided with gas flow sensor.
Preferably, in described combustion chamber, be provided with the 3rd pressure sensor.
Preferably, on the combustion gas main pipeline between described the first gaseous-pressure sensor and described the second stop valve, be provided with gas flow control device.
Preferably, described gas flow control device comprises gas control valve and valve positioner.
Preferably, described combustion system also comprises main gas nozzle, and described combustion gas main pipeline and described gas main duct are connected with described combustion chamber by described main gas nozzle.
Preferably, in described gas main duct, be provided with air flow sensor.
Preferably, described combustion system also comprises secondary gas nozzle and air secondary duct, and described combustion gas branch pipe(tube) is connected with described combustion chamber by secondary gas nozzle with described air secondary duct.
Compare with relevant technologies, the beneficial effect of the utility model embodiment is as follows:
(1) safe: natural gas master, branch pipe(tube) all arrange two stop valves and control.This burner is equipped with and ignites, and the combustion gas of igniting is identical with work combustion gas, need not quote another combustion gas, and fuel saving, increases security.During startup combustor, first ignite, when detecting pyrophoric flame and normally stablize by flame detecting device, centralized control unit is just opened the valve of combustion gas main pipeline, work combustion gas just can enter boiler normal combustion, avoids combustion gas main pipeline to pass into excessive combustion gas, has prevented deflagration phenomenon.If pyrophoric flame is undesired or do not light and ignite, centralized control unit is closed the first stop valve and the 3rd, the 4th stop valve, the accident of having avoided loss of ignition to cause automatically.After igniting and lighting, if work combustion gas can not normal combustion, what centralized control unit detected according to flame detecting device closes the first stop valve, the second stop valve and the 3rd, the 4th valve automatically without flare up fire, avoids combustion gas to enter arid region.
When gas source pressure transient, while there is larger fluctuation, or combustion gas main pipeline and when combustion gas main pipeline upper-part being set occur leaking, centralized control unit can Real-Time Monitoring combustion gas main pipeline according to the first gaseous-pressure sensor and the second gaseous-pressure sensor pressure signal, centralized control unit is closed the valves such as the first stop valve, the second stop valve and the 3rd, the 4th stop valve automatically, avoids occurring security incident.
Pressure sensor in combustion chamber can Real-Time Monitoring internal pressure of combustion chamber situation, hypertonia or too low and while surpassing preset pressure value, centralized control unit is controlled alarm and is sent alarm signal.If desired, centralized control unit can be closed the valves such as the first stop valve, the second stop valve and the 3rd, the 4th stop valve automatically, guarantees that the heat producing can not built up generation in combustion chamber dangerous.
When combustion fan quits work or air flow sensor detects flow declines rapidly, centralized control unit is closed automatic the first stop valve, the second stop valve and the 3rd, the 4th stop valve, to prevent the issuable danger of improper burning.
(2) thermal efficiency is high: due to according to required temperature value, gas flow control device automatic adjustment of combustion gas flow, simultaneously can also regulate air mass flow automatically according to the required proportioning of burning, guarantees that like this combustion gas fully burns, improve the thermal efficiency of burning, can adapt to gaseous-pressure fluctuation.
(3) fuel tolerance is strong: this kind of burner only need be changed a small amount of parts and just can be applicable to natural gas, liquefied petroleum gas, coal gas, liquefied petroleum gaseous mixture, biogas and other class combustion gas.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the combustion system of the utility model embodiment;
Reference numeral: 1-combustion gas main pipeline, 2-gas flow sensor, 3-the first gaseous-pressure sensor, 4-the first stop valve, 5-the second stop valve, 6-gas flow control device, 7-the second gaseous-pressure sensor, 8-combustion gas branch pipe(tube), 9-combustion chamber, 10-combustion fan, 11-gas main duct, 12-air secondary duct, 13-the 3rd stop valve, 14-the 4th stop valve
The specific embodiment
Hereinafter in connection with accompanying drawing, embodiment of the present utility model is elaborated.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can be combined mutually.
As shown in Figure 1, be the combustion system in the mineral wool sound absorption board drying process of the utility model embodiment, the combustion gas of using is natural gas, combustion system comprises centralized control unit, combustion chamber 9, combustion gas main pipeline 1, combustion gas branch pipe(tube) 8 and gas main duct 11;
Combustion gas main pipeline 1, gas main duct 11 is connected with combustion chamber 9; On combustion gas main pipeline 1 along gas-flow to direction be disposed with gas flow sensor 2, the first gaseous-pressure sensors 3, the first stop valve 4, the second stop valve 5, gas flow control device 6, the second gaseous-pressure sensor 7; Pipeline between the first stop valve 4 and the second stop valve 5 is connected with one end of combustion gas branch pipe(tube) 8, and the other end of combustion gas branch pipe(tube) 8 is connected with combustion chamber 9, and combustion gas branch pipe(tube) 8 is provided with the 3rd stop valve 13 and the 4th stop valve 14; In combustion chamber 9, be provided with igniter and flame detecting device, igniter can be for the igniter of routine use, as selected the electrode that can produce electric spark; Flame detecting device can be also conventional gas flame checkout gear.
Centralized control unit comprises preferred Programmable Logic Controller, comprises CPU, power module, transistor, analog input module, transistor, relay, analog output module, high speed counting module, long-range expansion module, CPU communication module, touch-screen communication module etc.Centralized control unit, for passing into after air in combustion chamber 9, according to the pressure signal of the first gaseous-pressure sensor 3 and the second gaseous-pressure sensor 7, is opened the first stop valve 4 and the 3rd stop valve 13 and the 4th stop valve 14; The signal of the pyrophoric flame that centralized control unit measures according to flame detecting device, opens the second stop valve 5; The signal of the work flame that centralized control unit detects according to flame detector again, controls igniter and quits work, the gas ignition success of combustion system.
After ignition device, centralized control unit is for aphlogistic signal being detected according to flame detecting device, when controlling the first stop valve 4, the second stop valve 5 and the 3rd stop valve 13, the 4th stop valve 14, closes.
Gas flow control device 6 is controlled and is connected with center, and gas flow control device 6 can be according to the signal of centralized control unit, the size of adjustment of combustion gas flow.Gas flow control device 6 can adopt the conventional gas flow control device 6 using, as gas flow control device 6 can comprise the combination unit of weather gas control valve and valve positioner.
For prevent heat that fuel gas buring produces in combustion chamber 9 excessive buildup, in combustion chamber 9, be provided with the 3rd pressure sensor, the 3rd pressure sensor can be selected depressimeter, the 3rd pressure sensor can Real-Time Monitoring combustion chamber the variation of 9 inside and outside pressure differentials, when pressure differential is excessive, i.e. the too much heat of the interior generation in combustion chamber 9, causes the pressure rise of combustion chamber 9, the 3rd pressure sensor just can real-time monitor, and sends monitoring result to centralized control unit.
In order to increase the security performance of combustion system, combustion gas main pipeline arranges two stop valves; Combustion gas branch pipe(tube) 8 arranges the 4th stop valve 14 again, so just a stop valve is set more, increases security, the 3rd stop valve 13 and the unrestricted requirement of the order of the 4th stop valve 14 on combustion gas branch pipe(tube) of 8 ventilations of combustion gas branch pipe(tube).
The top of gas main duct 11 is also provided with combustion fan 10, and centralized control unit can pass through to control the rotating speed of combustion fan 10, thereby regulates the air mass flow of gas main duct 11.In gas main duct 11, be provided with air flow sensor.Combustion gas main pipeline 1 and gas main duct 11 are connected with combustion chamber 9 by main gas nozzle, and in combustion gas main pipeline 1, combustion gas, is entered combustion chamber 9 and mutually fully mixes by after nozzle by air after nozzle and in air secondary duct 12 like this.
Combustion system also comprises secondary gas nozzle and air secondary duct 12, combustion gas branch pipe(tube) 8 is connected with combustion chamber 9 by secondary gas nozzle with air secondary duct 12, in combustion gas branch pipe(tube) 8, combustion gas, is entered combustion chamber 9 and mutually fully mixes by after nozzle by air after nozzle and in air secondary duct 12 like this.
Introduce this combustion system course of work below;
(1) at centralized control unit, press " igniting " key, centralized control unit first sends combustion fan 10 enabling signals to combustion fan 10, combustion fan 10 is sent into air in combustion chamber 9 by gas main duct 11, then centralized control unit is according to the first gaseous-pressure sensor 3 receiving and the pressure signal of the second gaseous-pressure sensor 7, judge that gaseous-pressure that combustion gas main pipeline 1 provides is whether within the scope of preset pressure, centralized control unit just sends the first stop valve 4 open command and the 3rd stop valve 13 and the 4th stop valve 14 instructions, thereby open the first stop valve 4, the 3rd stop valve 13 and the 4th stop valve 14, if surpass preset pressure, centralized control unit does not send, thereby realize centralized control unit and control the first stop valve 4, the unlatching of the 3rd stop valve 13 and the 4th stop valve 14, after unlatching, combustion gas enters combustion chamber 9 through leading portion and the combustion gas branch pipe(tube) 8 of combustion gas main pipeline 1, centralized control unit is controlled ignitor and is produced electric spark, thereby the natural gas that ignites and passed into by combustion gas branch pipe(tube) 8, produce pyrophoric flame,
(2) centralized control unit, according to the signal that pyrophoric flame detected of flame detector, is opened the second stop valve 5, and combustion gas enters combustion chamber 9 through combustion gas main pipeline 1, and the combustion gas being passed into by combustion gas main pipeline 1 is lighted by pyrophoric flame, produces work flame;
(3) signal of the work flame that centralized control unit detects according to flame detector, control electrode quits work, the gas ignition success of combustion system.When flame detector does not detect the signal of work flame, centralized control unit goes out to send instructions, and closes the first stop valve 4, the 3rd stop valve 13 and the 4th stop valve 14, thereby has guaranteed the safety of ignition process.
After completing igniting and in burning running, by the pressure in the first gaseous-pressure sensor 3 and the second combustion gas complete monitoring combustion gas main pipeline 1, if the pressure that the first gaseous-pressure sensor 3 is measured is higher than preset pressure, the hypertonia that explanation enters combustion gas main pipeline 1, centralized control unit controls the first stop valve 4 and the second stop valve 5 cuts out automatically, thereby cut off the gas circuit of combustion gas main pipeline 1, prevent the security incident that the bleed pressure shakiness of combustion gas is brought, guarantee the safety of producing; If the pressure that the second gaseous-pressure sensor 7 is measured is lower than default pressure, generation gas leakage above likely, centralized control unit also can control the first stop valve 4 and the second stop valve 5 cuts out automatically, thereby guarantees the accident that do not meet accident.
In order to guarantee sufficient combustion and safety, in running, centralized control unit is according to the required proportioning of burning and institute's calorific requirement, control the gas flow of gas flow control device 6 regulating gas main pipelines 1, and by regulating the rotating speed of combustion fan 10, thereby regulate the air mass flow of gas main duct 11.
According to the pressure of the 3rd pressure sensor monitoring, gas flow control device 6 regulating gas pass into the flow of combustion chamber 9.When the 3rd gaseous-pressure sensor in combustion chamber 9 is measured to pressure over predetermined pressure, the heat that generation in burning is described is too much, centralized control unit is controlled gas regulating device and is reduced the flow of combustion gas or directly close the first stop valve 4 and the second stop valve 5 on combustion gas main pipeline 1, thereby the not 9 interior accumulations in combustion chamber of heat that combustion gas produces, and then cause the danger of scaling loss equipment or blast.When the 3rd gaseous-pressure sensor in combustion chamber 9 is measured to pressure lower than predetermined pressure, the shortage of heat of the generation in burning is described, centralized control unit is controlled the flow that gas regulating device increases combustion gas.Meanwhile, the hypotony in combustion chamber or when too high, exceeds preset range, and centralized control unit is controlled alarm generation alarm signal, and staff can fix a breakdown in time, avoids security incident.
When combustion fan 10 breaks down or when the circulation line of the arid region that is connected with combustion chamber 9 breaks down, centralized control unit is controlled alarm and is reported to the police, the first stop valve 4 second stop valves 5, the 3rd stop valve 13 and the 4th stop valve 14 on automatic self-closing gas main pipeline 1 if desired, thereby reach the object of fire extinguishing, guaranteed the safety of producing.
The combustion system of above-described embodiment can be used natural gas, and natural gas has the efficient feature of safely cleaning as combustion medium.As disposable embodiment, also can adopt liquefied petroleum gas, coal gas, liquefied petroleum gaseous mixture, device in Gas, biogas and other class combustion gas.
Although the disclosed embodiment of the utility model as above, the embodiment that described content just adopts for the ease of understanding the utility model, not in order to limit the utility model.Technical staff under any the utility model in technical field; do not departing under the prerequisite of the disclosed spirit and scope of the utility model; can do any modification and variation what implement in form and in details; but scope of patent protection of the present utility model, still must be as the criterion with the scope that appending claims was defined.
Claims (9)
1. a combustion system for combustion gas, is characterized in that, it comprises combustion chamber, combustion gas main pipeline, combustion gas branch pipe(tube), gas main duct and centralized control unit;
Described combustion gas main pipeline, described gas main duct are connected with described combustion chamber respectively;
On described combustion gas main pipeline along gas-flow to direction be disposed with the first gaseous-pressure sensor, the first stop valve, the second stop valve, the second gaseous-pressure sensor;
Combustion gas main pipeline between described the first stop valve and described the second stop valve is connected with one end of described combustion gas branch pipe(tube), the other end of described combustion gas branch pipe(tube) is connected with described combustion chamber, and described combustion gas branch pipe(tube) is provided with the 3rd stop valve, the 4th stop valve;
In described combustion chamber, be provided with igniter and flame detecting device;
Described centralized control unit, passing into after air in described combustion chamber, according to the pressure signal of the first gaseous-pressure sensor, is opened described the first stop valve and the 3rd, the 4th stop valve; The signal of the pyrophoric flame that described centralized control unit measures according to described flame detecting device, opens described the second stop valve; The signal of the described work flame that described centralized control unit detects according to described flame detector, controls described igniter and quits work.
2. combustion system according to claim 1, wherein, after described ignition device, described centralized control unit detects aphlogistic signal according to described flame detecting device, controls described the first stop valve, the second stop valve and the 3rd, the 4th stop valve and closes simultaneously.
3. combustion system according to claim 1, wherein, is provided with gas flow sensor on the described combustion gas main pipeline before described the first gaseous-pressure sensor.
4. combustion system according to claim 1 wherein, is provided with the 3rd pressure sensor in described combustion chamber.
5. combustion system according to claim 1 wherein, is provided with gas flow control device on the combustion gas main pipeline between described the first gaseous-pressure sensor and described the second stop valve.
6. combustion system according to claim 5, wherein, described gas flow control device comprises gas control valve and valve positioner.
7. according to the combustion system described in any one in claim 1-6, wherein, described combustion system also comprises main gas nozzle, and described combustion gas main pipeline and described gas main duct are connected with described combustion chamber by described main gas nozzle.
8. according to the combustion system described in any one in claim 1-6, wherein, in described gas main duct, be provided with air flow sensor.
9. according to the combustion system described in any one in claim 1-6, wherein, described combustion system also comprises secondary gas nozzle and air secondary duct, and described combustion gas branch pipe(tube) is connected with described combustion chamber by secondary gas nozzle with described air secondary duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560578.3U CN203533611U (en) | 2013-09-10 | 2013-09-10 | Fuel gas combustion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560578.3U CN203533611U (en) | 2013-09-10 | 2013-09-10 | Fuel gas combustion system |
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| CN203533611U true CN203533611U (en) | 2014-04-09 |
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| CN201320560578.3U Expired - Fee Related CN203533611U (en) | 2013-09-10 | 2013-09-10 | Fuel gas combustion system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421959A (en) * | 2013-09-10 | 2015-03-18 | 北新集团建材股份有限公司 | Gas burning system and igniting method thereof |
| CN104534508A (en) * | 2014-12-24 | 2015-04-22 | 潍坊思创环保设备有限公司 | Safe marsh gas combustion control device and method |
| CN104879779A (en) * | 2015-05-20 | 2015-09-02 | 广东韶钢松山股份有限公司 | Gas combustion automatic control system and application thereof |
| CN113339792A (en) * | 2021-04-30 | 2021-09-03 | 北新集团建材股份有限公司 | Dryer gas system and control method thereof |
-
2013
- 2013-09-10 CN CN201320560578.3U patent/CN203533611U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421959A (en) * | 2013-09-10 | 2015-03-18 | 北新集团建材股份有限公司 | Gas burning system and igniting method thereof |
| CN104534508A (en) * | 2014-12-24 | 2015-04-22 | 潍坊思创环保设备有限公司 | Safe marsh gas combustion control device and method |
| CN104534508B (en) * | 2014-12-24 | 2016-09-07 | 潍坊思创环保设备有限公司 | A kind of biogas safe combustion controls device and control method |
| CN104879779A (en) * | 2015-05-20 | 2015-09-02 | 广东韶钢松山股份有限公司 | Gas combustion automatic control system and application thereof |
| CN113339792A (en) * | 2021-04-30 | 2021-09-03 | 北新集团建材股份有限公司 | Dryer gas system and control method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 |