CN2570778Y - Coal power metering apparatus - Google Patents
Coal power metering apparatus Download PDFInfo
- Publication number
- CN2570778Y CN2570778Y CN 02256513 CN02256513U CN2570778Y CN 2570778 Y CN2570778 Y CN 2570778Y CN 02256513 CN02256513 CN 02256513 CN 02256513 U CN02256513 U CN 02256513U CN 2570778 Y CN2570778 Y CN 2570778Y
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- coal
- instrument
- data processing
- metering instrument
- storage device
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Abstract
The utility model relates to a measuring instrument for substances in a pipeline, particularly to an instrument for measuring the state of coal powder in a coal conveying pipeline by using a nuclear radiation source. The coal power metering instrument is composed of a data collecting device, a data storing device and a central data processing device, wherein the data collecting device comprises a ray emitter and a ray receiver which are arranged on the outer wall of the coal conveying pipeline and correspond to each other. The ray emitter is composed of a low-energy photon source which is arranged in a collimating-shielding body. The ray receiver is a radiation detector which is arranged in a shielding sleeve. The data storing device is connected with the radiation detector and the central data processing device. The coal power metering instrument uses the nuclear radiation source to detect the density of the coal powder on line in the coal conveying pipeline of a coal fired power plant, meters and cumulates the quantity of coal consumption. Simultaneously, the coal power metering instrument displays the operating state of the system of the coal conveying pipeline. The utility model has the advantages of small size, light weight, simple and safe operation and accurate measurement.
Description
Technical field
The utility model relates to the surveying instrument of material in a kind of pipeline, is specifically related to a kind of instrument that nuclear radiation source is measured coal dust state in the convey coal pipe of using.
Background technology
At present, the coal-fired gauging instrument that generally uses of coal-fired station mainly is a belt conveyer scale.Owing on using method and the measurement technology difference is arranged, the accuracy of sending out net coal consumption rate that calculates is also different, and this mainly shows two aspects.A kind of is to utilize public last coal and metering system, measures the total Coal-fired capacity of full factory, and each stove Coal-fired capacity is not alone added up, and the coal consumption of the every degree electricity that obtains is the mean value of full factory.Another kind is that the branch furnace gauge that utilizes computer technology and belted electronic balance etc. to form is calculated system, what obtain is the Coal-fired capacity of every stove, the burning performance of reflection separate unit stove that can be more correct and stoker personnel's technical merit, but can not carry out the instantaneous measurement of online detection and coal consumption amount to the convey coal pipe system running state.Therefore,, further strengthen sending out the scientific management of net coal consumption rate, be necessary to develop meticulousr novel coal metering Instrument equipment for improving constantly the benefit of coal-fired power plant.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of existing coal powder metering instrument, provide a kind of can each convey coal pipe system of online detection fuel-burning power plant running status and calculate the coal powder metering instrument of coal consumption amount.
The technical solution of the utility model is as follows: the coal powder metering instrument is made of data collector, data storage device, central data processing unit, data collector comprises ray emitter and the ray receiver that is located at mutual correspondence on the convey coal pipe outer wall, ray emitter is made of the low-energy photon source that is located in collimation-shield, ray receiver is the radiation detector that is located in the shield, data storage device links to each other with radiation detector, and central data processing unit connects data storage device.
This coal powder metering instrument is used density, the metering accumulative total coal consumption amount of coal dust in the online detection of nuclear radiation source coal-fired station convey coal pipe, shows the convey coal pipe system running state simultaneously, equipment volume little, in light weight, simple to operate safe, measure accurately.
Description of drawings
Fig. 1 is the structural representation of coal powder metering instrument.
1. collimation-shields, 2. low-energy photon sources 3 among the figure, 4. convey coal pipe wall 5. radiation detectors 6. shields 7. signal cables 8. data storage devices 9. signal cables 10. central data processing units
Embodiment
As shown in Figure 1, the coal powder metering instrument comprises ray emitter and the ray receiver that is located at the mutual correspondence on the convey coal pipe outer wall 3,4, ray emitter is made of the low-energy photon source 2 that is located in collimation-shield 1, and ray receiver is the radiation detector 5 that is located in the shield 6.Low-energy photon source 2 is passed convey coal pipe directive radiation detector 5 by collimating apparatus with ray, and radiation detector 5 can be selected G-M counter tube or scintillation detector for use.Radiation detector 5 connects data storage device 8 by signal cable 7, data storage device 8 is screened instrument, step-by-step counting storer, microprocessor and light display circuit by interconnective pulse signal and is formed, data storage device 8 connects central data processing units 10 by signal cable 9, and central data processing unit 10 is made up of interconnective operational amplifier and micro computer and optoacoustic attention display.
When a branch of lower energy photon, for example x ray or gamma-rays, when shining on the object, see through the different depth d of material after, N is counted in the number of rays N and the incident that transmit
0Scale relevant with the density p of this kind material, promptly
, μ in the formula
mBe quality attenuation coefficient corresponding to this kind of this kind photon material.By this formula just can be regarded as the density p of this kind material, the measuring principle of Here it is the utility model coal powder metering instrument.Again by measured value or the estimated value of failing gas flow in the convey coal pipe, the time that can obtain coal consumption amount change and operation teams and groups between difference, can obtain the desired data of enterprise-quality management such as accumulative total coal consumption amount and the various signal sources of On-line Control by the measured value of defeated gas flow.
The energy range of the low-energy photon source 2 that the coal powder metering instrument that the utility model relates to is adopted generally can adopt the γ source or the x radiographic source of low energy below 300kev.The material of collimation-shield 1 can be by tungsten or plumbous the composition, and the linear width of collimating aperture is 2mm～16mm, and length is 2mm～200mm, and the degree of depth is 3mm～15mm, and the wall thickness of shield is greater than 4mm.Radiation detector 5 generally can adopt G-M counter tube or scintillation detector, by signal cable 7 pulse signal that pulse signal reaches data storage device 8 is screened instrument, pulse signal is screened instrument and is connected with the step-by-step counting storer, the step-by-step counting storer connects microprocessor, microprocessor is delivered to the operational amplifier of central data processing unit 10 by signal cable 9 with signal, carries out data processing by the micro computer that is connected with operational amplifier.Central data processing unit 10 is connected with the optoacoustic attention display, carries out numeral demonstration, optoacoustic warning etc. immediately, to realize the quality management of coal-fired station.
Claims (3)
1. coal powder metering instrument, constitute by data collector, data storage device, central data processing unit, it is characterized in that: data collector comprises that being located at convey coal pipe outer wall (3,4) goes up corresponding mutually ray emitter and ray receiver, ray emitter is made of the low-energy photon source (2) that is located in collimation-shield (1), ray receiver is for being located at the radiation detector (5) in the shield (6), data storage device (8) links to each other with radiation detector (7), and central data processing unit (10) connects data storage device (8).
2. coal powder metering instrument as claimed in claim 1 is characterized in that: data storage device is screened instrument, step-by-step counting storer, microprocessor and light display circuit by interconnective pulse signal and is formed.
3. coal powder metering instrument as claimed in claim 1 or 2 is characterized in that: central data processing unit is made up of interconnective operational amplifier, micro computer and optoacoustic attention display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02256513 CN2570778Y (en) | 2002-09-20 | 2002-09-20 | Coal power metering apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02256513 CN2570778Y (en) | 2002-09-20 | 2002-09-20 | Coal power metering apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570778Y true CN2570778Y (en) | 2003-09-03 |
Family
ID=33724718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02256513 Expired - Fee Related CN2570778Y (en) | 2002-09-20 | 2002-09-20 | Coal power metering apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2570778Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598656B (en) * | 2009-07-21 | 2011-01-05 | 长沙东星仪器有限责任公司 | Fineness measurement device for pulverized coal |
| WO2020211495A1 (en) * | 2019-04-17 | 2020-10-22 | 中国建材检验认证集团股份有限公司 | Coal consumption online measurement system |
-
2002
- 2002-09-20 CN CN 02256513 patent/CN2570778Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598656B (en) * | 2009-07-21 | 2011-01-05 | 长沙东星仪器有限责任公司 | Fineness measurement device for pulverized coal |
| WO2020211495A1 (en) * | 2019-04-17 | 2020-10-22 | 中国建材检验认证集团股份有限公司 | Coal consumption online measurement system |
| US11422100B2 (en) | 2019-04-17 | 2022-08-23 | China Testing & Certification International Group Co., Ltd. | Coal consumption online measuring 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 |