CN205897210U - A plasma ignition system for thermal power factory - Google Patents
A plasma ignition system for thermal power factory Download PDFInfo
- Publication number
- CN205897210U CN205897210U CN201620760750.3U CN201620760750U CN205897210U CN 205897210 U CN205897210 U CN 205897210U CN 201620760750 U CN201620760750 U CN 201620760750U CN 205897210 U CN205897210 U CN 205897210U
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- CN
- China
- Prior art keywords
- coal
- power plant
- ignition system
- coal pulverizer
- thermal power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a plasma ignition system for thermal power factory, it includes isoionic point firearm (D), positive pole (2) of isoionic point firearm (D) form some firearms with negative pole (1) parcel, the point firearm is lighted a fire to furnace's (3) some fire bed, the buggy that furnace's some fire bed was made for the coal pulverizer, it makes the boiler formation ignition system that steps up to light the buggy, it makes power station pulverized coal boiler start to light the buggy through high energy isoionic point firearm, point fire bed coal pulverizer passes through variable frequency speed governing(VFSG), exert oneself the coal pulverizer minimum and reduce to below the 15% rated output, the cinder problem of droing that the ignition initial stage stepped up and arouse has at the excessive speed been prevented. The problem of coal -fired power plant must the construction fuel oil system is solved, a major hazard source in power plant and location has been reduced to the coal -fired power plant operation cost has been reduced.
Description
Technical field
The utility model is related to a kind of plasma ignition system for thermal power plant.
Background technology
The sparking mode that thermal power plant adopts at present mainly has big grease gun igniting increasing temperature and pressure, carries out boiler thermal-state punching
Wash, after boiler heating boosting to a certain extent, restart coal pulverizer, further heat up liter using big oil gun heat energy firing coal-dust
Pressure.System is mainly made up of coal pulverizer, big oil gun, fuel system, oil storage tank etc..As shown in figure 3, g in Fig. 3: oil storage tank, t: combustion
Oil system, the big oil gun of q tradition.
A large amount of fuel consumption during ignition of the boiler, because unburnt fuel oil is possible to pollute deduster, typically
The measure taken is that sack cleaner first carries out precoating ash, and electrostatic precipitator does not put into operation, and result can cause chimney breast pollutant
A large amount of discharges, are unfavorable for environmental protection.Supercritical unit causes, using plasma igniter, the problem that boiler oxidation skin comes off simultaneously.
Due to oil storage tank with oil system belongs to major hazard source it is necessary to additional investment fire-fighting system, Oil Tank Area arranges specially
People is on duty.
Application number cn200710152331.7, a kind of adjustable concentrating device being applied to few-oil ignition or plasma ignition.
A kind of adjustable concentrating device being applied to few-oil ignition or plasma ignition of disclosure of the invention, it includes elbow, curved cylinder, directing vane
Piece and outer sleeve；Curved cylinder is placed in elbow, and by axis overlap fixed placement, elbow lower end couples an outer sleeve, in outer sleeve
The interior lower section positioned at curved cylinder porch, is provided with positioned at curved cylinder axis extended line both sides, several guide vanes of symmetric arrays,
Set fulcrum rotary shaft in the middle part of each guide vane, some guide vanes along respective fulcrum rotary shaft synchronous axial system, if constitute by
The top that dry guide vane is formed can opening or necking coal dust profile adjustment device.Elbow front end is connected with burner end,
Overcoat tube rear end is connected with pulverized coal channel.Advantages of the present invention and good effect are: for few-oil ignition or plasma ignition
It is achieved that coal powder density is distributed adjustable function, both fuel-economizings in system, and do not change the effect of former burner coal dust distribution character,
Boiler is not integrally had any impact.
Still fuel oil can be used in above-mentioned patent.
Content of the invention
The utility model purpose is to cancel thermal power plant fuel system and oil storage tank, provides that a kind of cost is lower, is
System is simpler, solve the problems, such as that super (super) criticality benchmark causes boiler oxidation skin to come off using plasma igniter, specifically
A kind of plasma ignition system for thermal power plant.
For this technical solutions of the utility model be: a kind of plasma ignition system for thermal power plant, including etc. from
Sub- igniter (d) it is characterised in that: negative electrode (1) is wrapped to form igniter by the anode (2) of plasma igniter (d), igniting
Device is lighted a fire to ignition layer of burner hearth (3), the coal dust that ignition layer of burner hearth (3) is made for coal pulverizer (m), and firing coal-dust makes boiler liter
Temperature rise swaging becomes ignition system.
Further it is improved by: described coal pulverizer (m) passes through frequency converter (b), power switch (k) connects to 6kv work
Make section (a) work.
Further it is improved by: the operating frequency range of coal pulverizer (m) is 30 ~ 50hz.
Beneficial effect
The utility model, in the start-up course in thermal power plant, eliminates, oil gun, fuel system and oil storage tank, first
Start plasma igniter, restart frequency conversion coal pulverizer, adjust frequency converter frequency and coal-supplying amount, so that pulverizer capacity is maintained
15% nominal output.Solve the problems, such as that coal fired power plant must build fuel system, decrease power plant and on-site one great
Dangerous matter sources, and reduce coal fired power plant operation cost.
In the utility model, the coal pulverizer of ignition layer adopts variable-frequency motor to drive, and coal pulverizer rotating speed is adjustable, can be by coal pulverizer
Minimum load is reduced to 15% nominal output by 25% nominal output, thoroughly solves in super (super) criticality benchmark start-up course
Oxide skin comes off problem.
Ignition layer pulverizer capacity can be effectively prevented to be less than vibration problem during 25% nominal output.
Thermal power plant can be made to put into operation deduster in initial start stage, it is to avoid atmosphere pollution discharge beyond standards.
Brief description
Fig. 1 is the utility model frequency conversion coal pulverizer schematic diagram.
Fig. 2 is the utility model plasma igniter schematic diagram.
Fig. 3 is oil storage tank in former ignition system, fuel system and oil gun schematic layout pattern.
In figure marks；
M is coal pulverizer, and k is power switch, and a is 6kv active section, and b is frequency converter, and d is plasma igniter, and g is oil storage
Tank, t is fuel system, and q is the big oil gun of tradition；1 is negative electrode, and 2 is anode, and 3 is burner hearth.
Specific embodiment
The utility model is as shown in Figure 1, 2.
A kind of plasma ignition system for thermal power plant, it includes plasma igniter (d), plasma ignition
Negative electrode (1) is wrapped to form igniter by the anode (2) of device (d), and igniter is lighted a fire to ignition layer of burner hearth (3), burner hearth (3)
The coal dust that ignition layer is made for coal pulverizer (m), firing coal-dust makes boiler heating boost and forms ignition system.
Described coal pulverizer (m) passes through frequency converter (b), power switch (k) connects to 6kv active section (a) work.
The operating frequency range of coal pulverizer (m) is 30 ~ 50hz.
Plasma igniter (d) lights the coal dust that frequency conversion coal pulverizer (m) makes makes boiler heating boost, 6kv active section (a)
Power to frequency converter (b) by power switch (k), frequency converter (b) drags coal pulverizer (m), by changing the frequency of frequency converter (b)
Change the rotating speed of coal pulverizer (m), reduce exerting oneself of coal pulverizer (m).
Coal pulverizer (m) variable-speed operation, frequency range is 30 ~ 50hz.
Claims (3)
1. a kind of plasma ignition system for thermal power plant, including plasma igniter (d) it is characterised in that: wait from
Negative electrode (1) is wrapped to form igniter by the anode (2) of sub- igniter (d), and igniter is lighted a fire to ignition layer of burner hearth (3), burner hearth
(3) coal dust that ignition layer is made for coal pulverizer, firing coal-dust makes boiler heating boost and forms ignition system.
2. a kind of plasma ignition system for thermal power plant according to claim 1 it is characterised in that: described
Coal pulverizer (m) passes through frequency converter (b), power switch (k) connects to 6kv active section (a) work.
3. a kind of plasma ignition system for thermal power plant according to claim 1 it is characterised in that: coal pulverizer
M the operating frequency range of () is 30 ~ 50hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620760750.3U CN205897210U (en) | 2016-07-20 | 2016-07-20 | A plasma ignition system for thermal power factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620760750.3U CN205897210U (en) | 2016-07-20 | 2016-07-20 | A plasma ignition system for thermal power factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205897210U true CN205897210U (en) | 2017-01-18 |
Family
ID=57772926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620760750.3U Active CN205897210U (en) | 2016-07-20 | 2016-07-20 | A plasma ignition system for thermal power factory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205897210U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907706A (en) * | 2017-04-20 | 2017-06-30 | 烟台龙源电力技术股份有限公司 | A kind of igniter and burner |
| CN109611839A (en) * | 2019-01-16 | 2019-04-12 | 烟台龙源电力技术股份有限公司 | Burner and combustion apparatus |
-
2016
- 2016-07-20 CN CN201620760750.3U patent/CN205897210U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907706A (en) * | 2017-04-20 | 2017-06-30 | 烟台龙源电力技术股份有限公司 | A kind of igniter and burner |
| CN106907706B (en) * | 2017-04-20 | 2023-12-08 | 烟台龙源电力技术股份有限公司 | Ignition device and combustor |
| CN109611839A (en) * | 2019-01-16 | 2019-04-12 | 烟台龙源电力技术股份有限公司 | Burner and combustion apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |