CN106196165A - Plasma ignition system and control method and applicable ultra-supercritical boiler - Google Patents
Plasma ignition system and control method and applicable ultra-supercritical boiler Download PDFInfo
- Publication number
- CN106196165A CN106196165A CN201610721424.6A CN201610721424A CN106196165A CN 106196165 A CN106196165 A CN 106196165A CN 201610721424 A CN201610721424 A CN 201610721424A CN 106196165 A CN106196165 A CN 106196165A
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- Prior art keywords
- plasma
- cooling blower
- plasma ignition
- ignition system
- anode
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/02—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs for igniting solid fuel
- F23Q7/04—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs for igniting solid fuel with fans for transfer of heat to fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/22—Details
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The open a kind of plasma ignition system of the present invention, this plasma ignition system comprises: plasma ignition device, and it comprises start-up burner, the plasma generation device of corresponding point ignition combustor setting and plasma flame detecting probe；Plasma fire inspection cooling blower, its input communication connection plasma ignition device, air-out is towards plasma generation device；Plasma ignition device igniting, plasma generation device trigger the inspection cooling blower startup work of plasma fire and provide plasma carrier wind when starting, control plasma fire inspection cooling blower and quit work when plasma generation device stops；Cooling blower examined by boiler fire, and it maintains a normally open state, and air-out is towards plasma flame detecting probe.Plasma fire of the present invention inspection cooling blower and plasma ignition system linkage start and stop, reduce equipment and run, reduce energy consumption, reduce maintenance.
Description
Technical field
The present invention relates to ignition of the boiler technology, be specifically related to a kind of plasma ignition system and control method and applicable surpassing
Super critical boiler.
Background technology
In recent years, because the conventional boiler demand for fuel such as coal, oil, natural gas is continuous nervous, and then price is lasting
Raise up, cause the fuel cost of debugging and operation to climb up and up.In order to reduce the consumption of diesel oil, the most of thermal power plant of China
All introduce plasma ignition system, and then reduce debugging and run fuel cost, but in this increasingly competitive age, enterprise
Industry is energy-conservation to be particularly important, and the problem that the properly functioning middle plasma system of unit consumes energy in running just seems especially prominent.
Plasma ignition device is to utilize DC current to connect under conditions of the MP a of medium air pressure 0.004 MP a ~ 0.03
Tactile striking, and under high-intensity magnetic field control, obtain the direct current air plasma of firm power, this plasma is custom-designed
Forming temperature T ＞ 5000K, district of thermograde great localized hyperthermia in burner centre combustion barrel, pulverized coal particle is by being somebody's turn to do
Plasma " fire core " is by high temperature action, and discharges rapidly volatile matter in 1 × 10-3s, makes pulverized coal particle rupture pulverizing,
Thus burn rapidly, it helps accelerate the burning of coal dust, be thus greatly reduced the fire ignition energy required for firing coal-dust.
Its composition is by cathode and anode plasma burner and the powder system thereof, direct current supply and control system, plasma cooling blower,
Plasma cooling water pump and hot working supervisory system system composition.
Along with boiler controller system long period safe operation, start-stop time reduces, and the isoionic use time is shorter and shorter, adds
Coal varitation is big, and in the case of, caloric value low at fugitive constituent is low, its effect is more and more weak.Owing to plasma ignition device is at unit
Properly functioning period is constantly in emergency use state, therefore its cooling blower runs the most continuously, causes the waste of station service
Loss with the energy.It is therefore proposed that article on plasma system operation mode is changed, do not affect its most standby feelings in guarantee
Under condition, by scrap build so that it is cooling blower is in resting state, once needs put into plasma apparatus chain open cold
But blower fan, it is ensured that device entry condition meets, it is ensured that the safety of production and the most energy-conservation needs.
Summary of the invention
The present invention provides a kind of plasma ignition system and control method and applicable ultra-supercritical boiler, cooling device with
Ignition installation start and stop, reduce equipment and run, reduce energy consumption, reduce and safeguard.
For achieving the above object, the present invention provides a kind of plasma ignition system, is characterized in, this plasma ignition system
Comprise:
Plasma ignition device, its comprise start-up burner, corresponding point ignition combustor arrange plasma generation device and etc. from
Sub-flame detecting probe；
Plasma fire inspection cooling blower, its input communication connection plasma ignition device, air-out is towards plasma generation device；
Plasma ignition device igniting, plasma generation device trigger when starting the inspection cooling blower startup work offer etc. of plasma fire from
Sub-carrier wind, controls plasma fire inspection cooling blower and quits work when plasma generation device stops；
Cooling blower examined by boiler fire, and it maintains a normally open state, and air-out is towards plasma flame detecting probe.
Above-mentioned plasma fire inspection cooling blower flow is 1341 m3/h, and blast is 17.013 kPa, and power is 22 kW, turns
Speed is 2930 r/min.
Above-mentioned boiler fire inspection cooling blower is centrifugal fan, and nominal air delivery is 2465 m3/h, and specified blast is 9.5
KPa, power is 11.2 kW, and rotating speed is 3530 r/min.
Above-mentioned plasma generation device comprises: anode, anode casing, insulating part, negative electrode, cathode shell and nozzle；Anode
Being hollow tube-shaped electrode with negative electrode, anode is arranged in anode casing, between anode outside wall surface and anode casing internal face
Form cooling duct；Negative electrode is arranged in cathode shell, forms cooling logical between negative electrode outside wall surface and cathode shell internal face
Road；It is internal and adjacent with negative electrode that nozzle is arranged on cathode shell；Insulating part is between anode casing and cathode shell；Insulating part
Extend respectively to for one end of hollow circular cylinder, anode and negative electrode in the cavity of insulating part, and formed between the anode and cathode
Inlet plenum；On insulating part formed at least two tangential admission hole, pressure-air from tangential admission hole with along axis rotation mode
It is injected tangentially inlet plenum；The centrage of the most adjacent anode, inlet plenum, negative electrode and nozzle is on same straight line.
Above-mentioned plasma ignition system also comprises water-cooling system, and this water-cooling system comprises circulation waterway, is arranged at recirculated water
Water temperature in road reduces device and cooling water pump；Circulation waterway is provided with radiating part, this radiating part by conducting-heat elements with wait from
Sub-igniter and/or plasma fire inspection cooling blower and/or boiler fire examine cooling blower and/or plasma flame detecting probe
Connect.
Above-mentioned plasma fire inspection cooling blower outfan is connected to the cold air duct of coal pulverizer also by pipeline gas circuit.
The control method of a kind of above-mentioned plasma ignition system, is characterized in, this control method comprises:
Boiler fire inspection cooling blower is normally opened, provides cooling wind to boiler fire inspection equipment and plasma flame detecting probe；
When plasma ignition device starts, trigger plasma fire inspection cooling blower and start, it is provided that plasma carrier wind；
When plasma ignition device quits work, trigger plasma fire inspection cooling blower and quit work.
A kind of ultra-supercritical boiler, is characterized in, this boiler comprises body of heater, and body of heater is provided with some coal feed points；Each enter
Coal mouth is connected to coal pulverizer, is provided with four angle burners in body of heater at coal feed point, and each angle burner is provided with above-mentioned plasma
Ignition system.
If above-mentioned boiler is additionally provided with the oil gun of the Heavenly Stems and Earthly Branches extension type being divided into three-layer set, this oil gun uses mechanical atomization spray
Mouth, maximum power output is 1000kg/h.
Plasma ignition system of the present invention and control method and applicable ultra-supercritical boiler and the plasma of prior art
Ignition system cooling technology is compared, and has an advantage in that, plasma fire detecting probe cooling is changed into by the inspection of boiler fire cold by the present invention
But blower fan provides, and when using plasma ignition system, cooling blower examined by the normal plasma fire that starts, and carries as providing plasma
Body wind uses, and when disabling plasma igniter, disables plasma fire inspection cooling blower, and plasma fire inspection cooling wind is by boiler fire
Inspection cooling blower provides, and reduces equipment and runs, reduce energy consumption, reduces and safeguard.
Accompanying drawing explanation
Fig. 1 is the structural scheme of mechanism of plasma ignition system embodiment one of the present invention；
Fig. 2 is the flow chart of the control method of plasma ignition system of the present invention；
Fig. 3 is the structural scheme of mechanism of plasma ignition system embodiment two of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, further illustrate the specific embodiment of the present invention.
As it is shown in figure 1, the invention discloses the embodiment one of a kind of plasma ignition system, this plasma ignition system bag
Contain: plasma ignition device 101, plasma fire inspection cooling blower 102 and boiler fire inspection cooling blower 103.
Plasma ignition device 101 comprise start-up burner (not indicating in figure), corresponding point ignition combustor arrange etc. from
Sub-generator 105 and plasma flame detecting probe 105.
Plasma fire inspection cooling blower 102 input communication connection plasma ignition device 101, air-out is produced towards plasma
Generating apparatus 102.Plasma fire inspection cooling wind is triggered when plasma ignition device 101 is lighted a fire, and plasma generation device 102 starts
Machine 102 starts work, provides plasma carrier wind for plasma generation device 105；When plasma generation device 105 stops, control
Plasma fire processed inspection cooling blower 102 quits work.
Plasma fire inspection cooling blower 102 flow is 1341 m3/h, and blast is 17.013 kPa, and power is 22 kW, turns
Speed is 2930 r/min.
Boiler fire inspection cooling blower 103 maintains a normally open state, for dispelling the heat for boiler flame detecting probe, and the inspection cooling of this boiler fire
The coverage rate of blower fan 103 air-out comprises plasma flame detecting probe 105, it is achieved while dispelling the heat for boiler flame detecting probe, be also
Plasma flame detecting probe 105 dispels the heat.
Boiler fire inspection cooling blower 103 is centrifugal fan, and nominal air delivery is 2465 m3/h, and specified blast is 9.5
KPa, power is 11.2 kW, and rotating speed is 3530 r/min.
A kind of embodiment of plasma generation device 102, it comprises: outside anode, anode casing, insulating part, negative electrode, negative electrode
Shell and nozzle；Anode and negative electrode are hollow tube-shaped electrode, and anode is arranged in anode casing, outside anode outside wall surface and anode
Cooling duct is formed between shell internal face；Negative electrode is arranged in cathode shell, negative electrode outside wall surface and cathode shell internal face it
Between formed cooling duct；It is internal and adjacent with negative electrode that nozzle is arranged on cathode shell；Insulating part is positioned at outside anode casing and negative electrode
Between shell；In insulating part is the cavity that one end of hollow circular cylinder, anode and negative electrode extends respectively to insulating part, and at anode and
Inlet plenum is formed between negative electrode；On insulating part formed at least two tangential admission hole, pressure-air from tangential admission hole with edge
Axis rotation mode is injected tangentially inlet plenum；The centrage of the most adjacent anode, inlet plenum, negative electrode and nozzle is same
On bar straight line.
Plasma ignition system also comprises water-cooling system (not indicating in figure), and this water-cooling system comprises circulation waterway, arranges
Water temperature in circulation waterway reduces device and cooling water pump；Being provided with radiating part in circulation waterway, this radiating part passes through heat-conducting part
Part and plasma ignition device 101 and/or plasma fire inspection cooling blower 102 and/or boiler fire inspection cooling blower 103 and/
Or plasma flame detecting probe 105 connects, plasma ignition device 101 and/or plasma fire are examined cooling blower 102 and/or
The heat that boiler fire inspection cooling blower 103 and/or plasma flame detecting probe 105 produce is derived by water and is realized heat radiation.
As in figure 2 it is shown, the invention also discloses the control method of a kind of plasma ignition system, this control method comprise with
Lower step:
S1, boiler fire inspection cooling blower is normally opened, provides cooling wind to boiler fire inspection equipment and plasma flame detecting probe；
Whether S2, plasma ignition device start, if then jumping to S3, if otherwise jumping to S4.
When S3, plasma ignition device start, trigger plasma fire inspection cooling blower and start, it is provided that plasma carrier wind,
And jump to S2.
When S4, plasma ignition device quit work, trigger plasma fire inspection cooling blower and quit work, and jump to
S2。
The invention also discloses a kind of ultra-supercritical boiler being applicable to above-mentioned plasma ignition system and control method thereof,
This boiler comprises body of heater, and body of heater is provided with some coal feed points；Each coal feed point is connected to coal pulverizer, is provided with in body of heater at coal feed point
Four angle burners, each angle burner is provided with above-mentioned plasma ignition system.
If boiler is additionally provided with the oil gun of the Heavenly Stems and Earthly Branches extension type being divided into three-layer set, this oil gun uses atomizing nozzle,
Maximum power output is 1000kg/h.
As it is shown on figure 3, be the embodiment two of a kind of plasma ignition system, plasma fire inspection cooling wind in former ignition system
Machine 301 is by pipeline, and gas circuit is connected to be arranged at towards plasma flame detecting probe 303 and plasma generation device (for table in figure
Show) air outlet, the cooling blower 302 of boiler fire inspection simultaneously is connected to be arranged at also by pipeline gas circuit and visits towards the inspection of plasma fire
The air outlet 306 of 303.The feature of the present embodiment is, at plasma fire inspection cooling blower 301 to plasma flame detecting probe
At the air outlets of 303 air-supplies 305, cut off former pipeline and install plug additional, close plasma fire inspection cooling blower 301 and examine to plasma fire
The former air outlet of probe 303 air-supply, it is achieved only boiler fire inspection cooling blower 302 is to plasma flame detecting probe 303 air-supply heat radiation.
It addition, plasma fire inspection cooling blower 301 outfan is connected to the cold air duct of coal pulverizer also by pipeline gas circuit
304。
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read foregoing, for the present invention's
Multiple amendment and replacement all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a plasma ignition system, it is characterised in that this plasma ignition system comprises:
Plasma ignition device, its comprise start-up burner, corresponding point ignition combustor arrange plasma generation device and etc. from
Sub-flame detecting probe；
Plasma fire inspection cooling blower, its input communication connection plasma ignition device, air-out is towards plasma generation device；
Plasma ignition device igniting, plasma generation device trigger when starting the inspection cooling blower startup work offer etc. of plasma fire from
Sub-carrier wind, controls plasma fire inspection cooling blower and quits work when plasma generation device stops；
Cooling blower examined by boiler fire, and it maintains a normally open state, and air-out is towards plasma flame detecting probe.
2. plasma ignition system as claimed in claim 1, it is characterised in that described plasma fire inspection cooling blower flow is
1341 m3/ h, blast is 17.013 kPa, and power is 22 kW, and rotating speed is 2930 r/min.
3. plasma ignition system as claimed in claim 1, it is characterised in that described boiler fire inspection cooling blower is centrifugal
Blower fan, nominal air delivery is 2465 m3/ h, specified blast is 9.5 kPa, and power is 11.2 kW, and rotating speed is 3530 r/min.
4. plasma ignition system as claimed in claim 1, it is characterised in that described plasma generation device comprises: anode,
Anode casing, insulating part, negative electrode, cathode shell and nozzle；Anode and negative electrode are hollow tube-shaped electrode, and anode is arranged on anode
In shell, between anode outside wall surface and anode casing internal face, form cooling duct；Negative electrode is arranged in cathode shell, at the moon
Cooling duct is formed between pole outside wall surface and cathode shell internal face；It is internal and adjacent with negative electrode that nozzle is arranged on cathode shell；
Insulating part is between anode casing and cathode shell；Insulating part is that one end of hollow circular cylinder, anode and negative electrode each extends over
To the cavity of insulating part, and form inlet plenum between the anode and cathode；Insulating part is formed at least two tangential admission
Hole, pressure-air from tangential admission hole to be injected tangentially inlet plenum along axis rotation mode；The most adjacent anode, air inlet
The centrage of room, negative electrode and nozzle is on same straight line.
5. plasma ignition system as claimed in claim 1, it is characterised in that described plasma ignition system also comprises water-cooled
System, this water-cooling system comprises circulation waterway, and the water temperature being arranged in circulation waterway reduces device and cooling water pump；Circulation waterway
In be provided with radiating part, this radiating part by conducting-heat elements and plasma ignition device and/or plasma fire inspection cooling blower and/
Or boiler fire inspection cooling blower and/or plasma flame detecting probe connect.
6. plasma ignition system as claimed in claim 1, it is characterised in that described plasma fire inspection cooling blower outfan
The cold air duct of coal pulverizer it is connected to also by pipeline gas circuit.
7. a control method for plasma ignition system as described in any one claim in claim 1 to 6, its feature
Being, this control method comprises:
Boiler fire inspection cooling blower is normally opened, provides cooling wind to boiler fire inspection equipment and plasma flame detecting probe；
When plasma ignition device starts, trigger plasma fire inspection cooling blower and start, it is provided that plasma carrier wind；
When plasma ignition device quits work, trigger plasma fire inspection cooling blower and quit work.
8. a ultra-supercritical boiler, it is characterised in that this boiler comprises body of heater, body of heater is provided with some coal feed points；Each enter
Coal mouth is connected to coal pulverizer, is provided with four angle burners in body of heater at coal feed point, each angle burner be provided with as claim 1 to
Plasma ignition system described in any one claim in 6.
9. ultra-supercritical boiler as claimed in claim 8, it is characterised in that this boiler is additionally provided with and is divided into the some of three-layer set
Propping up the oil gun of extension type, this oil gun uses atomizing nozzle, and maximum power output is 1000kg/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610721424.6A CN106196165A (en) | 2016-08-25 | 2016-08-25 | Plasma ignition system and control method and applicable ultra-supercritical boiler |
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|---|---|---|---|
| CN201610721424.6A CN106196165A (en) | 2016-08-25 | 2016-08-25 | Plasma ignition system and control method and applicable ultra-supercritical boiler |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355816A (en) * | 2017-07-19 | 2017-11-17 | 冠立科技扬州有限公司 | A kind of ceramic protective sleeve |
| CN107804868A (en) * | 2017-10-30 | 2018-03-16 | 四川宏达股份有限公司 | A kind of boiling chloridizing furnace plasma gun igniting blow-in method |
| CN111520743A (en) * | 2020-05-28 | 2020-08-11 | 西安热工研究院有限公司 | Automatic telescopic plasma ignition device |
| CN113464931A (en) * | 2021-08-06 | 2021-10-01 | 西安热工研究院有限公司 | Operation control system and method for plasma ignition pulverized coal burner |
| CN114440257A (en) * | 2022-01-13 | 2022-05-06 | 徐兴国 | Plasma cooling air device for boiler |
| CN114909674A (en) * | 2022-05-25 | 2022-08-16 | 西安热工研究院有限公司 | Self-starting plasma ignition control system based on coal-fired unit |
| CN114909673A (en) * | 2022-05-25 | 2022-08-16 | 西安热工研究院有限公司 | Self-starting method and device of plasma ignition system based on coal-fired unit |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355816A (en) * | 2017-07-19 | 2017-11-17 | 冠立科技扬州有限公司 | A kind of ceramic protective sleeve |
| CN107804868A (en) * | 2017-10-30 | 2018-03-16 | 四川宏达股份有限公司 | A kind of boiling chloridizing furnace plasma gun igniting blow-in method |
| CN111520743A (en) * | 2020-05-28 | 2020-08-11 | 西安热工研究院有限公司 | Automatic telescopic plasma ignition device |
| CN113464931A (en) * | 2021-08-06 | 2021-10-01 | 西安热工研究院有限公司 | Operation control system and method for plasma ignition pulverized coal burner |
| CN114440257A (en) * | 2022-01-13 | 2022-05-06 | 徐兴国 | Plasma cooling air device for boiler |
| CN114909674A (en) * | 2022-05-25 | 2022-08-16 | 西安热工研究院有限公司 | Self-starting plasma ignition control system based on coal-fired unit |
| CN114909673A (en) * | 2022-05-25 | 2022-08-16 | 西安热工研究院有限公司 | Self-starting method and device of plasma ignition system based on coal-fired unit |
| CN114909674B (en) * | 2022-05-25 | 2024-02-06 | 西安热工研究院有限公司 | Self-starting plasma ignition control system based on coal-fired unit |
| CN114909673B (en) * | 2022-05-25 | 2024-04-30 | 西安热工研究院有限公司 | Self-starting method and device for plasma ignition system based on coal-fired unit |
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Application publication date: 20161207 |