CN104534501A - Boiler flame image detection system - Google Patents
Boiler flame image detection system Download PDFInfo
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- CN104534501A CN104534501A CN201410822799.2A CN201410822799A CN104534501A CN 104534501 A CN104534501 A CN 104534501A CN 201410822799 A CN201410822799 A CN 201410822799A CN 104534501 A CN104534501 A CN 104534501A
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- height layer
- flame image
- boiler
- detection system
- image detection
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Abstract
The invention provides a boiler flame image detection system which is good in detection effect and long in service life. The boiler flame image detection system comprises five height layer open holes in a boiler furnace, each hole is provided with a probe, and each height layer is correspondingly provided with two holes. The first height layer is located below a coal feeding opening of a reducing atmosphere combustion area, the second height layer is located at the coal feeding opening of the reducing atmosphere combustion area, the third height layer is located at an inlet of secondary air, namely the boundary of the reducing atmosphere combustion area and an oxidizing atmosphere combustion area, the fourth height layer is located above the inlet of the secondary air, and the fifth height layer is located below an inlet of a cyclone separator. All the holes are connected together through a compressed gas pipe, and the compressed gas pipe is connected with a purging cooling system. All the probes are connected with a video distributor. According to the boiler flame image detection system, the detection integrity of the system to flames of the entire furnace is guaranteed, five layers of flame image detectors are arranged in the furnace combustion space of a monitored circulating fluidized bed, and therefore the detection effect is good.
Description
Technical field
The present invention relates to a kind of boiler plant, especially a kind of boiler flame image detection system.
Background technology
CFBB (Circulating Fluidized Bed is called for short CFB) has that fuel tolerance is wide, efficiency of combustion is high, Air-pollution From Combustion discharge capacity is low, combustion intensity advantages of higher, has a wide range of applications in thermal power station.
CFB boiler is incendivity fat coal both, also incendivity inferior fuel, as dirty coal, sulphur coal, high-sulfur dirty coal, hydrogenous coal, gangue, coal slime, and oil shale, mud coal, slag, bark, rubbish etc.His this advantage, has total large meaning to making full use of inferior fuel.
The efficiency of combustion of external CFB boiler is generally up to 99%.The CFB boiler combustion efficiency of China's designed, designed is up to 95%-99%.The main cause of this boiler combustion efficiency is that burning-uip rate is high.The instance data of boiler operation shows, the slag combustible figure of this type boiler only has 1%-2%, and during burning fat coal, efficiency of combustion is suitable with coal-powder boiler, and burning low grade coal is, the combustion rate of CFB boiler is about higher by 5% than coal-powder boiler.
CFBB (Circulating Fluidized Bed is called for short CFB).CFB boiler is a very complicated control object, it has non-linear, Great inertia, time variation, uncertainty, forced coupling, the pulverized-coal fired boiler being difficult to accurately describe by a specific Mathematical Modeling and CFB boiler ratio is conventional has more I/O variable, disturb too many simultaneously, bring very large difficulty to the control of CFB control system.
The flame image detection system of existing boiler plant only observes flame image at a height and position, and therefore Effect on Detecting is bad, and due to temperature near detector very high, have impact on the service life of detection system.
Summary of the invention
The invention provides that a kind of Effect on Detecting is good, the boiler flame image detection system of long service life.
Realize a kind of boiler flame image detection system of the object of the invention, be included in five height layer perforates of boiler furnace, a probe is installed in each hole, and each height layer correspondence opens two holes; First height layer is positioned at below the coal feeding hole of reducing atmosphere combustion zone; Second height layer is positioned at the coal feeding hole place of reducing atmosphere combustion zone; Third high degree layer is positioned at the porch of Secondary Air, i.e. reducing atmosphere combustion zone and oxidizing atmosphere combustion zone boundary; 4th height layer is positioned at the entrance top of Secondary Air; 5th height layer is positioned at below cyclone inlet; All holes are linked together by compression gas pipe, and described compression gas pipe is connected with purging cooling system; Described probe connects video distributor.
The position of opening of adjacent described height layer is arranged in a crossed manner.
The middle part perforate of the forward and backward wall of described first height layer and third high degree layer; The middle part perforate of the left and right wall of described second height layer; The left wall front portion of described 4th height layer and the perforate of You Qiang rear portion; The front wall left part of described 5th height layer and the perforate of rear wall right part.
Described compression gas pipe is provided with filter and magnetic valve.
The beneficial effect of a kind of boiler flame image detection system of the present invention is as follows:
A kind of boiler flame image detection system of the present invention, ensure that the integrality that system detects whole furnace flame, and five layers of flame image detector are arranged in the recirculating fluidized bed burner hearth combustion space monitored, every layer 2 probes are installed, corresponding layout, adjacent two layers crosses one another, and Effect on Detecting is good.
Increase at the hole place of installing probe and purge cooling air system, guarantee that flame probe eyeglass can keep clean for a long time, make image detector induction not because eyeglass is dirty and produce signal attenuation, and improve the service life of probe.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of boiler flame image detection system of the present invention.
Detailed description of the invention
As shown in Figure 1, a kind of boiler flame image detection system of the present invention, is included in five height layer perforates of boiler furnace 1, and a probe is installed in each hole, and each height layer correspondence opens two holes; First height layer is positioned at below the coal feeding hole of reducing atmosphere combustion zone; Second height layer is positioned at the coal feeding hole place of reducing atmosphere combustion zone; Third high degree layer is positioned at the porch of Secondary Air, i.e. reducing atmosphere combustion zone and oxidizing atmosphere combustion zone boundary; 4th height layer is positioned at the entrance top of Secondary Air; 5th height layer is positioned at below cyclone inlet; All holes are linked together by compression gas pipe, and described compression gas pipe is connected with purging cooling system; Described probe connects video distributor 2.
The position of opening of adjacent described height layer is arranged in a crossed manner.
The middle part perforate of the forward and backward wall of described first height layer and third high degree layer, manhole door and bed pressure measuring point are all arranged in the left and right wall both sides due to the first height layer, so in front-back wall perforate.Owing to considering that Secondary Air affects flame kernel, so perforate in the middle part of the front-back wall of third layer.The middle part perforate of the left and right wall of described second height layer.For the ease of observation and the fire defector integrality of combustion position, the left wall front portion of described 4th height layer and the perforate of You Qiang rear portion; For ease of observing the outlet of oxidizing atmosphere combustion zone, the front wall left part of described 5th height layer and the perforate of rear wall right part.
Described compression gas pipe is provided with filter and magnetic valve.
The advantage of a kind of boiler flame image detection system of the present invention is as follows:
A kind of boiler flame image detection system of the present invention, ensure that the integrality that system detects whole furnace flame, and five layers of flame image detector are arranged in the recirculating fluidized bed burner hearth combustion space monitored, every layer 2 probes are installed, corresponding layout, adjacent two layers crosses one another, and Effect on Detecting is good.
Increase at the hole place of installing probe and purge cooling air system, guarantee that flame probe eyeglass can keep clean for a long time, make image detector induction not because eyeglass is dirty and produce signal attenuation, and improve the service life of probe.
Embodiment recited above is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; do not departing under the present invention designs spiritual prerequisite; the various distortion that the common engineers and technicians in this area make technical solution of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (4)
1. a boiler flame image detection system, is characterized in that: five the height layer perforates being included in boiler furnace, and a probe is installed in each hole, and each height layer correspondence opens two holes; First height layer is positioned at below the coal feeding hole of reducing atmosphere combustion zone; Second height layer is positioned at the coal feeding hole place of reducing atmosphere combustion zone; Third high degree layer is positioned at the porch of Secondary Air, i.e. reducing atmosphere combustion zone and oxidizing atmosphere combustion zone boundary; 4th height layer is positioned at the entrance top of Secondary Air; 5th height layer is positioned at below cyclone inlet; All holes are linked together by compression gas pipe, and described compression gas pipe is connected with purging cooling system; Described probe connects video distributor.
2. a kind of boiler flame image detection system according to claim 1, is characterized in that: the position of opening of adjacent described height layer is arranged in a crossed manner.
3. a kind of boiler flame image detection system according to claim 2, is characterized in that: the middle part perforate of the forward and backward wall of described first height layer and third high degree layer; The middle part perforate of the left and right wall of described second height layer; The left wall front portion of described 4th height layer and the perforate of You Qiang rear portion; The front wall left part of described 5th height layer and the perforate of rear wall right part.
4., according to the arbitrary described a kind of boiler flame image detection system of claims 1 to 3, it is characterized in that: described compression gas pipe is provided with filter and magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822799.2A CN104534501A (en) | 2014-12-25 | 2014-12-25 | Boiler flame image detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822799.2A CN104534501A (en) | 2014-12-25 | 2014-12-25 | Boiler flame image detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104534501A true CN104534501A (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410822799.2A Pending CN104534501A (en) | 2014-12-25 | 2014-12-25 | Boiler flame image detection system |
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| CN (1) | CN104534501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678122A (en) * | 2020-06-08 | 2020-09-18 | 苏州臻越流体设备有限公司 | Low nox combustion system of cyclone furnace based on ccd |
-
2014
- 2014-12-25 CN CN201410822799.2A patent/CN104534501A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678122A (en) * | 2020-06-08 | 2020-09-18 | 苏州臻越流体设备有限公司 | Low nox combustion system of cyclone furnace based on ccd |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |