CN201464388U - On-line ash content detector for coal bypass - Google Patents
On-line ash content detector for coal bypass Download PDFInfo
- Publication number
- CN201464388U CN201464388U CN2009201073095U CN200920107309U CN201464388U CN 201464388 U CN201464388 U CN 201464388U CN 2009201073095 U CN2009201073095 U CN 2009201073095U CN 200920107309 U CN200920107309 U CN 200920107309U CN 201464388 U CN201464388 U CN 201464388U
- Authority
- CN
- China
- Prior art keywords
- coal
- sample
- sampling system
- ash content
- regular
- Prior art date
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to an on-line ash content detector for a coal bypass, which is a quick automated detector capable of continuously detecting the ash content of coal. The detector comprises a sampling system, a breaker, a sample-arranging mechanism, an ultralow radiativity detection instrument and a material-rejecting mechanism, wherein the sampling system is mounted on a main coal flow-conveying line, the breaker is connected with the sampling system, the sample-arranging mechanism is connected with the breaker, the ultralow radiativity detection instrument is mounted on the sample-arranging mechanism, and the material-rejecting mechanism is connected with the sample-arranging mechanism. Since the automatic bypass sampling system is used, the interference of the prior conveying system on the detection instrument is eliminated, so that the radiativity detection instrument can operate in an optimal working environment to exert effective working efficiency. The pulverized coal is uniform, the density is uniform, consequently, rays can evenly penetrate the pulverized coal, a conveyer belt with side baffles and an upper scrapper is used to arrange the pulverized coal into appropriate shape and thickness, as a result, measurement errors caused by the irregular shape of the detected object are eliminated, and the detection precision is effectively increased when an ultralow radiation source is used.
Description
Technical field
The utility model relates to a kind of device for detecting ash content at coal bypass on line, is a kind of non-destructive coal pick-up unit that does not change the chemical constitution of testee, but a kind of rapid automatized pick-up unit of continuous detecting Coal Quality.
Background technology
Traditional ash content of coal standard determination method is the calcination weight method, and method is that a certain amount of coal is pulverized to calcination after the coal dust weighing forms residue, analyzes calcination front and back weight, to determine ash content of coal.This method can be determined the ash content of coal more accurately, but detection speed is slow, can not adapt to coal transhipment, in the sales process fast, on-line continuous on supply line detects the demand of ash content quality.Above-mentioned detection method is a kind of destructive detection, detects the match quality as striking a match, and has checked that all products have not just had output yet.
Utilize radiometric technique to realize that the quick measurement of ash content of coal is the most effective at present on-line measurement mode.Radiometric technique is to utilize gamma-rays to penetrate coal post analysis ray attenuation situation to detect Coal Quality.
Using traditional on-line measurement method is directly on the belt feeder supply line of carrying coal radiation meter to be installed, and the coal that passes through on the belt feeder is carried out radiation detection.The method of this online radiation detection coal is subjected to the influence of the geometric configuration such as the factors such as thickness, granularity, accumulation situation and iron content of coal easily, under the less demanding situation of accuracy of detection, can also use, but development along with economic society, to grade separation and the raising of degree of accuracy, the On-line Measuring Method more accurately of selling Coal Quality.Traditional online direct method of measurement just must increase the intensity of radioactive source in order to improve measuring accuracy.But increasing the intensity of radioactive source and the raising of measuring accuracy is not linear increasing, and the increase of radiation intensity also can produce many bad effects, for example the increase to ambient radiation needs biological protection, and in other words that precision of Zeng Jiaing but needs to pay more cost.Because surveying instrument is directly installed in the former transportation system, former transportation system for example contains on the steel wire belt feeder and just can not adopt radiometric technique also exerting an influence to detecting instrument in addition.
Always on surveying instrument, work hard for increasing the precision techniques personnel under normal conditions, improve the performance of instrument as much as possible,, yet get half the result with twice the effort often, lose more than gain in the hope of the result who obtains to be satisfied with.
Summary of the invention
The purpose of this utility model is to propose a kind of device for detecting ash content at coal bypass on line for solving the problems of the technologies described above.Described device makes up desirable sense environmental conditions when improving instrument performance.Promptly on the main line of carry coal stream, increase the automatic sample bypass device of a cover, the coal of getting bypath system is carried out fragmentation, form the coal dust of granularity unanimity, and coal dust is shaped to a suitable shape and thickness, on side line, utilize radiometric technique to measure ash content again, realize utilizing extremely low radiation intensity, accurately measure ash content of coal.
The purpose of this utility model is achieved in that a kind of device for detecting ash content at coal bypass on line, comprise: be installed in the sampling system on the main line of carry coal stream, the disintegrating machine that is connected with described sampling system, the regular mechanism of sample that is connected with described disintegrating machine, be installed in the utmost point low diathermaneity radiation meter in the regular mechanism of described sample, back coal sends carry coal stream main line back to abandons material mechanism for will measuring of being connected with the regular mechanism of described sample.
The beneficial effect that the utility model produces is: owing to used the bypass automatic sampling apparatus, got rid of of the interference of former transportation system to detecting instrument, the radiation detection instrument is operated in the best working environment, give full play to its effective work efficiency. pulverized coal particle after crushed is even, density is even, ray is penetrated in coal dust evenly, the conveying belt that use has side guard and upper scraping plate is shaped as suitable shape and thickness with coal dust, got rid of because the measuring error that the shape lack of standardization of testee is brought, under the situation of using utmost point low-inensity radiation source, effectively raising accuracy of detection. sampling and regular equipment all are traditional plant equipment, technical without any difficult point, cost is very low, is a kind of with the overcome a difficulty typical case of problem of straightforward procedure.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the synoptic diagram of the utility model embodiment one described device for detecting ash content at coal bypass on line;
Fig. 2 is the regular structural scheme of mechanism of the utility model embodiment two described samples;
Fig. 3 is the regular mechanism of the utility model embodiment two, three a described samples side schematic view, is the sectional view of A-A among Fig. 2.
Embodiment
Embodiment one:
Present embodiment is a kind of device for detecting ash content at coal bypass on line, as shown in Figure 1.Described device comprises: be installed in the sampling system 2 on the main line 1 of carry coal stream, the disintegrating machine 3 that is connected with described sampling system, the regular mechanism 5 of the sample that is connected with described disintegrating machine, be installed in the utmost point low diathermaneity radiation meter 4 in the regular mechanism of described sample, be connected with the regular mechanism of described sample will measure after coal dust send into carry coal stream main line abandon material mechanism 6.
The described sampling system of present embodiment can be a kind of sampling system of directly installing on carry coal stream main line, and directly will adopt sample pulverize.Usually will be in actual production through the two-stage sampling.Because of the coal difference on the carry coal stream main line is very big, once sampling can't meet the demands.Can also adopt repeatedly sampling for satisfying the demand, form sampling system like this.Disintegrating machine can screen after with coal crushing, filters out the comparison homogeneous granules, so that detect.
The employed radiation detection instrument of present embodiment can be multiple detection method, for example: low-energy backscattering method, energetic gamma rays annihilation radiation detection method, the inelastic scattering of measuring natural radioactive detection method, dual energy gamma-rays transmission detection method, neutron in the coal and capture radiation detection method, microwave detection method or the like.
The effect of the described regular mechanism of present embodiment is with the regular shape for determining of coal dust, so that detect.Generally regular is the rectangle most convenient, because the thickness of rectangle is even, and only needs simple baffle plate just can be very easily to be the detection bodies of square-section with coal dust is regular.
Abandon material mechanism and be the coal dust after is after testing sent back to device on the carry coal stream main line.Because radiation detection is a kind of Non-Destructive Testing, to material without any damage.Coal dust after the detection can directly be put back on the carry coal stream main line, need not any processing.
Embodiment two:
Present embodiment is the improvement of embodiment one described device, it is the refinement of the regular mechanism of described sample, as shown in Figure 2. the regular mechanism of the described sample of present embodiment comprises: the driving wheel 511 and the engaged wheel 502 that are installed in the belt conveyor at frame two ends, be enclosed within the belt conveyor 505 on described driving wheel and the engaged wheel, described driving wheel is connected with motor 509 by speed reduction unit 510, belt tension mechanism 501 is housed on the described engaged wheel, being separately installed with up and down of described belt conveyor, following carrier wheel 507,508. defeated hopper 503 is installed on described belt conveyor, in the both sides of described belt conveyor side board 506 is installed respectively along defeated material direction, the outlet of described defeated hopper is equipped with material scraping plate 504, and described material scraping plate and described side board form regular rectangle material outlet.
Present embodiment is a device that installs defeated hopper, side board and material scraping plate on ordinary straps additional, key is originally irregular coal dust 7 is regular for rectangular, the cross section is the test sample of rectangle, the detection error that the radiation detection instrument has been discharged cause owing to the material irregularity in testing process has solved the coarse problem of radiation detection cleverly with simple structure.
Coal dust after present embodiment is regular is a rectangular strip test sample that the cross section is uniform, the radiation detection instrument can be continuous this strip test sample is detected, be similar to whole piece carry coal stream main line is monitored in real time, this is very important for the control Coal Quality.
Embodiment three:
Present embodiment is embodiment one or two improvement, be the foregoing description the refinement of material scraping plate, as shown in Figure 3.The described material scraping plate of present embodiment is fixed on the defeated hopper by regulating bolt 512.
For the big or small present embodiment of regulating the rectangle material outlet is provided with the adjusting bolt.Bolt hole on material scraping plate is a slotted hole, material scraping plate can move up and down by regulating bolt like this, the size of discharging opening can be regulated, and actual effect changes the height of the strip test sample of square-section, to meet the requirement of various radiation detection instruments.
It should be noted that at last, below only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to the preferred arrangement scheme, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model (such as the method for regular test sample, the arrangement of side board, arrangement of material scraping plate or the like), and not break away from the spirit and scope of technical solutions of the utility model.
Claims (3)
1. device for detecting ash content at coal bypass on line, comprise: be installed in the sampling system on the main line of carry coal stream, the disintegrating machine that is connected with described sampling system, it is characterized in that: the regular mechanism of sample that is connected with described disintegrating machine, be installed in the utmost point low diathermaneity radiation meter in the regular mechanism of described sample, be connected with the regular mechanism of described sample will measure after coal dust send into carry coal stream main line abandon material mechanism.
2. device according to claim 1, it is characterized in that: the regular mechanism of described sample comprises: the driving wheel and the engaged wheel that are installed in the belt conveyor at frame two ends, be enclosed within the belt conveyor on described driving wheel and the engaged wheel, described driving wheel is connected with motor by speed reduction unit, belt tension mechanism is housed on the described engaged wheel, described belt conveyor be separately installed with upper and lower carrier wheel up and down; Defeated hopper is installed on described belt conveyor, in the both sides of described belt conveyor side board is installed respectively along defeated material direction, the outlet of described defeated hopper is equipped with material scraping plate, and described material scraping plate and described side board form regular rectangle material outlet.
3. device according to claim 2 is characterized in that: described material scraping plate is bolted on the defeated hopper by adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201073095U CN201464388U (en) | 2009-04-13 | 2009-04-13 | On-line ash content detector for coal bypass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201073095U CN201464388U (en) | 2009-04-13 | 2009-04-13 | On-line ash content detector for coal bypass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464388U true CN201464388U (en) | 2010-05-12 |
Family
ID=42391738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201073095U Expired - Lifetime CN201464388U (en) | 2009-04-13 | 2009-04-13 | On-line ash content detector for coal bypass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201464388U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839823A (en) * | 2010-06-08 | 2010-09-22 | 山东鲁能智能技术有限公司 | Dust sampling device |
| CN101532967B (en) * | 2009-04-13 | 2012-07-18 | 天地科技股份有限公司 | Device for detecting ash content at coal bypass on line and method thereof |
| CN102661935A (en) * | 2012-05-15 | 2012-09-12 | 广东电网公司电力科学研究院 | LIBS (Laser-induced Breakdown Spectroscopy) belt type powdery material detector |
| CN103538813A (en) * | 2013-10-24 | 2014-01-29 | 长沙开元仪器股份有限公司 | Vibrating feeding device |
| CN103884559A (en) * | 2014-04-09 | 2014-06-25 | 湖南万通科技有限公司 | Division machine |
| CN110525991A (en) * | 2018-05-24 | 2019-12-03 | 宝山钢铁股份有限公司 | A kind of powder cuts out device |
-
2009
- 2009-04-13 CN CN2009201073095U patent/CN201464388U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532967B (en) * | 2009-04-13 | 2012-07-18 | 天地科技股份有限公司 | Device for detecting ash content at coal bypass on line and method thereof |
| CN101839823A (en) * | 2010-06-08 | 2010-09-22 | 山东鲁能智能技术有限公司 | Dust sampling device |
| CN102661935A (en) * | 2012-05-15 | 2012-09-12 | 广东电网公司电力科学研究院 | LIBS (Laser-induced Breakdown Spectroscopy) belt type powdery material detector |
| CN103538813A (en) * | 2013-10-24 | 2014-01-29 | 长沙开元仪器股份有限公司 | Vibrating feeding device |
| CN103538813B (en) * | 2013-10-24 | 2016-10-05 | 长沙开元仪器股份有限公司 | A kind of vibrating material-distributing device |
| CN103884559A (en) * | 2014-04-09 | 2014-06-25 | 湖南万通科技有限公司 | Division machine |
| CN103884559B (en) * | 2014-04-09 | 2017-01-25 | 湖南万通科技股份有限公司 | Division machine |
| CN110525991A (en) * | 2018-05-24 | 2019-12-03 | 宝山钢铁股份有限公司 | A kind of powder cuts out device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101532967B (en) | Device for detecting ash content at coal bypass on line and method thereof | |
| CN201464388U (en) | On-line ash content detector for coal bypass | |
| FI88212C (en) | SJAELVREGLERANDE, ON-LINE, REALTIDSANALYSATOR FOER BULKMATERIAL | |
| CN104198503B (en) | Online coal ash content measurement system and method based on natural gamma rays | |
| CN201063033Y (en) | Continuous on-line detecting device for measuring thermal value of coaly | |
| AU2002324849B2 (en) | X-ray fluorescence measuring system and methods for trace elements | |
| US10539415B2 (en) | Conveyer system and measuring device for determining water content of a construction material | |
| CN203249879U (en) | Device for quickly detecting sulfur constituents in solid material | |
| CN102706780A (en) | Instrument for monitoring small particulate matters in air | |
| CN206483713U (en) | Mineral dry separation system | |
| CN109507213A (en) | A kind of side line coal analysis system | |
| CN101907582B (en) | Full section scanning on-line detection device | |
| CN101368917B (en) | Automatic ore slurry grade control instrument | |
| US20160084776A1 (en) | Alternative fuels analyzer | |
| CN208666568U (en) | Material testing system | |
| CN101738408B (en) | Adjustable on-line multielement analyzer | |
| CN212525014U (en) | Improved ore sorting equipment based on TDI and multi-energy spectrum X-ray detection technology | |
| Cutmore et al. | Low frequency microwave technique for on-line measurement of moisture | |
| RU2648105C1 (en) | Separator and method of dry concentration of diamond-containing ore | |
| CN204556840U (en) | Distinguish the on-line measurement device of uranium ore | |
| RU2612734C2 (en) | Installation for dry enrichment of kimberlite ore by method of labelled neutrons | |
| CN103278485A (en) | Quick detection method of sulphur component in solid material, and detecting device for same | |
| CN201348615Y (en) | Adjustable on-line multielement analyzer | |
| CN205861383U (en) | As-fired coal sampling and verification integral system of weighing in high precision | |
| CN108974972A (en) | A kind of material testing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090413 |