CN2789610Y - Straight-blowing boiler one-time powder on-line monitoring system - Google Patents
Straight-blowing boiler one-time powder on-line monitoring system Download PDFInfo
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- CN2789610Y CN2789610Y CN 200520101261 CN200520101261U CN2789610Y CN 2789610 Y CN2789610 Y CN 2789610Y CN 200520101261 CN200520101261 CN 200520101261 CN 200520101261 U CN200520101261 U CN 200520101261U CN 2789610 Y CN2789610 Y CN 2789610Y
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Abstract
The utility model discloses a one-time powder on-line monitoring system of a straight-blowing boiler, which comprises a calculation display system (1), wherein an entrance port of the calculation display system (1) is connected with a data acquisition system (3), and the other end of the data acquisition system (3) is respectively connected with at least one electrostatic sensor (4), at least one pressure sensor (5) and at least one temperature sensor (6). The utility model has the advantages of convenient installation and test, and high measuring accuracy.
Description
Technical field
The utility model relates to a kind of monitoring system, particularly a kind of direct blow boiler line monitor system for primary wind and powder that is applicable to thermal power plant.
Background technology
The rational proportion of Coal-fired capacity and combustion air is large-sized station boiler optimization burning, guarantees a primary condition of safety, economical operation.When big or burner number is a lot of when boiler capacity, have only each burner in stove, to send into fuel and air, could satisfy and reach whole combustion chamber best combustion effect by certain coal-air ratio.And the wind powder in each burner evenly is assurance boiler good combustion, prevents ash erosion, improves efficiency of combustion, not plugging, does not produce the essential condition of spontaneous combustion in the pipe.Therefore, people urgently wish to have a kind of line monitor system for primary wind and powder, and parameter values such as wind speed, concentration, pressure, temperature can be provided in real time, and in time burning to adjust for the operation personnel provides foundation.
Because therefore the two phase flow that wind coal dust of thermal power plant is a kind of complexity is an industry technology difficult problem to its accurate measurement always.The On-line Measuring Method of present existing boiler concentration of pulverized coal can be divided into following two big classes:
(1), direct method: as the term suggests it is by the physics and chemistry instrument and equipment, measure some physical quantity of coal dust in wind, directly obtain the coal powder density value.Mainly contain microwave method, photoelectric detection method, laser method and supercritical ultrasonics technology etc. at present.But because factor affecting such as big multiple instruments is on the high side, installation accuracy requires high, calibration difficulty, use and popularization has big difficulty in factory at present.
(2), indirect method: claim thermodynamic method again, its measuring principle is based on law of conservation of energy, continuity equation, momentum law, and on certain hypothesis basis, simplify, the actual measurement process is exactly the measuring cells such as temperature, pressure and pressure reduction that utilize power plant commonly used, and the basic parameter of these operations of power plant is measured indirectly.It mainly contains energy method, pressure differential method and temperature method.They are widely used methods in present China power plant.Because its precision is lower, gaging hole is easily stifled, working service is inconvenient, has been difficult to satisfy the requirement of technological progress in enterprises and modern management.
Summary of the invention
At the deficiencies in the prior art part, the utility model provides the direct blow boiler line monitor system for primary wind and powder that a kind of installation testing is convenient, certainty of measurement is high.
The utility model is for reaching above purpose, be to realize: a kind of direct blow boiler line monitor system for primary wind and powder is provided by such technical scheme, comprise operational display system, the entrance point of this operational display system links to each other with data collecting system, and the other end of data collecting system connects at least one electrostatic transducer, at least one pressure sensor and at least one temperature sensor respectively.
As a kind of improvement of the present utility model: the port of export of operational display system links to each other with display or printer.
As further improvement of the utility model: electrostatic transducer, pressure sensor, temperature sensor three's quantity equates.
Direct blow boiler line monitor system for primary wind and powder of the present utility model, made full use of the static ratio juris: coal dust is in broken and course of conveying, collide mutually between the coal dust particle, rub, separate, coal dust particle forms electrostatic field owing to having a certain amount of static, and electrostatic field is directly proportional with coal powder density; As long as therefore collect the power of electrostatic field, handle the concentration that just can obtain coal dust by analysis.Adopt the direct blow boiler line monitor system for primary wind and powder of the utility model structure, pressure, temperature and the electrostatic signal that records is sent to data collecting system respectively by pressure sensor, temperature sensor, electrostatic transducer.Data collecting system is responsible for this signal is changed into the corresponding signal of telecommunication, further passes to operational display system again.Operational display system calculates real-time wind speed, temperature and coal powder density numerical value according to pressure, temperature and electrostatic signal on the different airducts, and it is multi-form to be shown as form, bar graph, curve map etc.And can spontaneous combustion warning in a disconnected powder warning of wind, the pipe, plugging warning be set according to ruuning situation.Direct blow boiler line monitor system for primary wind and powder of the present utility model has the certainty of measurement height, and the measuring point life-span is long, installation, test, advantage such as easy to maintenance; The characteristics that also have highly versatile: on-line monitoring system can be installed on the DCS multiple systems such as (collective and distributive type control systems).Direct blow boiler line monitor system for primary wind and powder of the present utility model not only is applicable to direct blow boiler, equally also is applicable to warehouse style boiler.
Description of drawings
Fig. 1 is the structural representation of a kind of direct blow boiler line monitor system for primary wind and powder of the present utility model;
Fig. 2 is the structural representation of another kind of direct blow boiler line monitor system for primary wind and powder of the present utility model.
The specific embodiment
With reference to above-mentioned accompanying drawing, the specific embodiment of the present utility model is elaborated.
Embodiment 1, Fig. 1 have provided a kind of direct blow boiler line monitor system for primary wind and powder, comprise operational display system 1, and the port of export of operational display system 1 links to each other with display 2, and the entrance point of operational display system 1 links to each other with the port of export of data collecting system 3.The entrance point of data collecting system 3 connects 6,10 pressure sensors 5 of 4,10 temperature sensors of 10 electrostatic transducers respectively.
In order to guarantee result of use, the probe of pressure sensor 5 can use wear-resistant ceramic to make, and prevents the measuring probe wearing and tearing like this, influences certainty of measurement.In order to prevent the pressure gaging hole of the probe of coal dust deposition retaining pressure sensor 5 in the airduct, this probe can adopt a kind of like this structure as prior art: the flexure spring and the rigid rod that have from the deashing function are housed in the probe, so just can prevent effectively that the pressure gaging hole is blocked.
During actual the use, electrostatic transducer 4, pressure sensor 5, temperature sensor 6 all are positioned on the tested airduct straight length of the needs of station boiler, are used for obtaining the signal of corresponding static, pressure, temperature in airduct.
Embodiment 2, Fig. 2 have provided another kind of direct blow boiler line monitor system for primary wind and powder: the port of export of operational display system 1 links to each other with printer 7, and the entrance point of data collecting system 3 connects 6,60 pressure sensors 5 of 4,60 temperature sensors of 60 electrostatic transducers respectively.All the other are with embodiment 1.
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged, and for example changes the quantity of pressure sensor 5 grades.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (3)
1, a kind of direct blow boiler line monitor system for primary wind and powder, it is characterized in that: comprise operational display system (1), the entrance point of described operational display system (1) links to each other with data collecting system (3), and the other end of described data collecting system (3) connects at least one electrostatic transducer (4), at least one pressure sensor (5) and at least one temperature sensor (6) respectively.
2, direct blow boiler line monitor system for primary wind and powder according to claim 1 is characterized in that: the port of export of described operational display system (1) links to each other with display (2) or printer (7).
3, direct blow boiler line monitor system for primary wind and powder according to claim 1 and 2 is characterized in that: described electrostatic transducer (4), pressure sensor (5), temperature sensor (6) three's quantity equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520101261 CN2789610Y (en) | 2005-03-29 | 2005-03-29 | Straight-blowing boiler one-time powder on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520101261 CN2789610Y (en) | 2005-03-29 | 2005-03-29 | Straight-blowing boiler one-time powder on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2789610Y true CN2789610Y (en) | 2006-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520101261 Expired - Fee Related CN2789610Y (en) | 2005-03-29 | 2005-03-29 | Straight-blowing boiler one-time powder on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2789610Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299690A (en) * | 2015-12-02 | 2016-02-03 | 江苏中能电力设备有限公司 | Fully-automatic online equalization system for pulverized coal |
-
2005
- 2005-03-29 CN CN 200520101261 patent/CN2789610Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299690A (en) * | 2015-12-02 | 2016-02-03 | 江苏中能电力设备有限公司 | Fully-automatic online equalization system for pulverized coal |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |