CN2504639Y - In-line monitor for pipeline coal powder - Google Patents
In-line monitor for pipeline coal powder Download PDFInfo
- Publication number
- CN2504639Y CN2504639Y CN 01254197 CN01254197U CN2504639Y CN 2504639 Y CN2504639 Y CN 2504639Y CN 01254197 CN01254197 CN 01254197 CN 01254197 U CN01254197 U CN 01254197U CN 2504639 Y CN2504639 Y CN 2504639Y
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- China
- Prior art keywords
- measurement zone
- coal
- probe
- coal powder
- light
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- Expired - Fee Related
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Abstract
The utility model which relates to a coal powder in the pipeline online monitoring device comprises a computer, a probe which is of the shape of a slender bar. The front of the probe is provided with a small measure area, each of the two sides of which is provided with a cut, and one side is provided with a photoelectric emitter, and the other side is provided with a photoelectric receiver, which is connected with the computer, detecting the transmitted light strong fluctuating signal related to the granularity and the consistency of the coal powder grain in the coal powder current, and the probe is connected with the air supply. The device can monitor the granularity and the consistency of the coal powder grain in the coal powder current and diagnose the running state of the coal powder pipeline. When in use, the device has no effect on the running of the unit, and the measuring results shown in forms of curve and data can be saved in the hard disk to be analyzed.
Description
Technical field:
The utility model relates to a kind of powder coal on-line monitor in the coal-burning boiler convey coal pipe of fuel-burning power plant that is used for.
Background technology:
The large coal powder boiler that uses in the fuel-burning power plant all is equipped with pulverized coal preparation system, and the coal dust that comes out from coal pulverizer carries through pulverized coal channel by the delivery air and enters the burner hearth burning, and the coal dust required combustion air that burns in boiler also is admitted to boiler simultaneously.Thereby the unevenness of coal powder density has a significant impact the burning of boiler between each pulverized coal channel.If the coal powder density in each burner differs too big, then burning can not finely be organized, and can cause eccentricity of fire, coking, unstable combustion etc.Can cause mechanical incomplete combustion and coal powder size is excessive or cross detailed rules and regulations, loss increase, boiler efficiency decline, the increase of coal pulverizer energy consumption etc.The improper pulverized coal channel that also can cause of the inhomogeneous or granule size of coal powder density stops up, and obstruction will be eliminated by forced-stopping machine or load shedding by power plant when serious, thereby cause heavy losses to power plant, influence safe operation.It is to adopt sampling method basically that the coal powder size of current power plant is measured, and takes out behind the coal dust sample granularity that obtains coal dust at testing sieve point-score etc. from pulverized coal channel with isokinetic sampling's pipe.In fact this measuring method length consuming time can not control the running status of coal pulverizer and coal dust disconnecting gear in real time, is beneficial to burning to obtain best coal powder size.Measurement as for coal powder density mostly is to calculate from the total coal-supplying amount of feeder and the total blast volume of each pipeline.
Summary of the invention:
The purpose of this utility model is for overcoming the deficiency of prior art, a kind of pipeline powder coal on-line monitor has been proposed, can utilize a device to monitor coal powder size, concentration, flow velocity and flow simultaneously continuously and automatically, realize coal dust operation conditions in the pulverized coal channel is carried out on-line monitoring.
The random pulse degree that the utility model is based on by the transmitted light intensity of breeze airflow is to be caused by pulverized coal particle number and change of size in the breeze airflow, and promptly it has comprised the granularity and the such principle of concentration information of pulverized coal particle.Random pulse degree information by detecting transmitted light intensity machine Treatment Analysis as calculated can obtain parameters such as pulverized coal particle granularity and concentration.Technical scheme of the present invention is: it comprises computing machine; the optic test probe; probe is an elongated rod-shaped; there is a little measurement zone front portion; the every side in measurement zone both sides all has two apertures; measurement zone one side has photoemitter; opposite side is equipped with photelectric receiver; the output of photelectric receiver is connected with computing machine; the light beam that the light source of photoemitter sends is injected measurement zone by aperture; light beam passes measurement zone and enters other end aperture and received by photelectric receiver; detect with breeze airflow in the granularity and the concentration dependent transmitted light intensity fluctuating signal of pulverized coal particle; the optic test probe is connected with a source of the gas, and pressurized air is used for cooling and protection optical fiber; lens and prevent that aperture from being stopped up by coal dust.
Can measure granularity, concentration, the flow velocity of coal dust in the pipeline with this monitoring device, and coal dust radially distribution situation in pipe, the operation conditions of coal pipe is diagnosed.During this measurement device unit operation is had no effect, also do not need coal pulverizer is carried out any operation.As long as can begin to measure allowing pulverized coal flow cross measurement zone in the probe insertion coal pipe.Measurement result directly is presented on the computer screen with the form of curve and data, is kept at simultaneously and is provided with the post analysis use on the hard disk.
Description of drawings
Fig. 1 is first embodiment general structure synoptic diagram of the utility model;
Fig. 2 is the structural representation of optical measurement;
Fig. 3 is the structural representation of another embodiment of the utility model;
Fig. 4 is the sectional view at place, optical measuring probe head measurement district.
Embodiment:
Embodiment 1:
The pipeline powder coal on-line monitor of present embodiment as shown in Figure 1; mainly be by probe 1; instrument container 2; computing machine 3; source of the gas 4 is formed; optical measurement shown in Figure 2 comprises photoemitter and photelectric receiver; photoemitter is by light source 5; coupled lens 6; optical fiber 7; collimation lens 8 is formed; photelectric receiver comprises photosensitive detecting element 9 and amplifier 10 compositions; wherein light source 5; coupled lens 6; photosensitive detecting element 9 and amplifier 10 are installed in the instrument container shown in Figure 12; the light that light source 5 is sent is through behind the coupled lens 6; be transferred to end of probe through optical fiber 7; behind collimation lens 8 collimation, inject in the breeze airflow in the measurement zone 12 by measurement zone 12 1 sides two apertures 11 as shown in Figure 4; light beam passes in the measurement zone 12 opposite side apertures 13 and transfers to that optical detection device 9 goes out and received by photosensitive detecting element 9 through optical fiber 7; after amplifier 10 amplifies, send in the computing machine 3 and handle calculating; be used to cool off and protect optical fiber or lens and prevent that aperture is connected to the probe draft tube by the pressurized air that coal dust stops up by the road by source of the gas; in probe, flow into measurement zones, during measurement probe inserted and connect the protection source of the gas in the pulverized coal channel and can begin to measure by aperture 11 and 13.
Embodiment 2:
It is installed in optical measurement at the two ends of end of probe measurement zone; as shown in Figure 3; photoemitter is by light source 5; collimation lens 8 is formed; it comprises photosensitive detecting element 9 and amplifier 10 photelectric receiver; light that light source 5 the is sent light beam after through collimation lens 8 collimations is injected in the breeze airflow in the measurement zone 12 by measurement zone 12 1 sides two apertures 11 as shown in Figure 4; light beam passes measurement zone 12 opposite side apertures 13 and receives to photosensitive detecting element 9 and by light-sensitive detector 9; after amplifier 10 amplifies, send in the computing machine 3 and handle calculating by transmission line 14; be used to cool off and protect optical fiber or lens and prevent that aperture from also being flowed into measurement zones by aperture 11 and 13 by the pressurized air that coal dust stops up, during measurement probe inserted and connect the protection source of the gas in the pulverized coal channel and blanket gas is sent into end of probe by pipeline 15 can begin to measure.
Claims (3)
1; a kind of pipeline powder coal on-line monitor; it is characterized in that; it comprises computing machine (3); optic test probe (1); probe is an elongated rod-shaped; there is a little measurement zone (12) front portion; the every side in measurement zone both sides all has two apertures (11; 13); measurement zone one side has photoemitter; opposite side is equipped with photelectric receiver; the output of photelectric receiver is connected with computing machine; the light beam that the light source of photoemitter sends is injected measurement zone by aperture; light beam passes measurement zone and enters other end aperture and received by photelectric receiver; detect with breeze airflow in the granularity and the concentration dependent transmitted light intensity fluctuating signal of pulverized coal particle, the optic test probe is connected with a source of the gas, pressurized air is used for cooling and protection optical fiber; lens and prevent that aperture from being stopped up by coal dust.
2, pipeline powder coal on-line monitor according to claim 1, it is characterized in that described photoemitter is by light source (5), coupled lens (6), optical fiber (7), collimation lens (8) is formed, it comprises optical fiber (7) described photelectric receiver, photosensitive detecting element (9) and amplifier (10), behind the light process coupled lens (6) that light source (5) is sent, be transferred to end of probe through optical fiber (7), behind collimation lens (8) collimation, inject in the breeze airflow in the measurement zone (12) by measurement zone (12) one side apertures (11), light beam passes measurement zone (12) opposite side aperture (13) and transfers to optical detection device (9) and by photosensitive detecting element (9) reception, send into computing machine (3) after amplifier (10) amplifies through optical fiber (7).
3, pipeline powder coal on-line monitor according to claim 1, it is characterized in that described photoemitter also can be by light source (5), collimation lens (8) is formed, it comprises photosensitive detecting element (9) and amplifier (10) photelectric receiver, the light that light source (5) is sent is injected in the interior breeze airflow of measurement zone (12) by measurement zone (12) one side apertures (11) through collimation lens (8) collimation back, light beam passes measurement zone (12) opposite side aperture (13) to photosensitive detecting element (9) and goes out and received by light-sensitive detector (9), sends into computing machine (3) by transmission line (14) after amplifier (10) amplifies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254197 CN2504639Y (en) | 2001-10-16 | 2001-10-16 | In-line monitor for pipeline coal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254197 CN2504639Y (en) | 2001-10-16 | 2001-10-16 | In-line monitor for pipeline coal powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2504639Y true CN2504639Y (en) | 2002-08-07 |
Family
ID=33663568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01254197 Expired - Fee Related CN2504639Y (en) | 2001-10-16 | 2001-10-16 | In-line monitor for pipeline coal powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2504639Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424557A (en) * | 2015-12-17 | 2016-03-23 | 广州敏远能源科技有限公司 | Online measurement device and method for boiler pulverized coal particle parameters |
| CN106290078A (en) * | 2016-08-01 | 2017-01-04 | 上海理工大学 | Gas-solid rolling particles group's multi parameter simultaneous measuring method and apparatus |
| CN106841036A (en) * | 2017-02-14 | 2017-06-13 | 天津大学 | The optimal disposing way of sample cell in laser interference imaging system |
-
2001
- 2001-10-16 CN CN 01254197 patent/CN2504639Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424557A (en) * | 2015-12-17 | 2016-03-23 | 广州敏远能源科技有限公司 | Online measurement device and method for boiler pulverized coal particle parameters |
| CN106290078A (en) * | 2016-08-01 | 2017-01-04 | 上海理工大学 | Gas-solid rolling particles group's multi parameter simultaneous measuring method and apparatus |
| CN106841036A (en) * | 2017-02-14 | 2017-06-13 | 天津大学 | The optimal disposing way of sample cell in laser interference imaging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |