CN206392169U - The device of coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods - Google Patents
The device of coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods Download PDFInfo
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- CN206392169U CN206392169U CN201621386765.4U CN201621386765U CN206392169U CN 206392169 U CN206392169 U CN 206392169U CN 201621386765 U CN201621386765 U CN 201621386765U CN 206392169 U CN206392169 U CN 206392169U
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- coal
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- coal pulverizer
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- Disintegrating Or Milling (AREA)
Abstract
The purpose of this utility model is to provide a kind of device of the high many quadrant Noise Method monitoring coal-grinding machine-made egg-shaped or honey-comb coal briquets positions of use of coal position monitoring precision, including coal pulverizer, 4N* (1≤N≤4) individual ceramic pick-up and external processor on the outside of coal pulverizer steel cylinder, centered on the axle center of coal pulverizer steel cylinder, the outer peripheral sidewall fourth class of coal pulverizer steel cylinder is divided into four quadrant areas, uniformly N* (1≤N≤4) individual ceramic pick-up is fitted with each quadrant area, inclinator is installed on each ceramic pick-up, the external processor electrically connects each ceramic pick-up to read, tracer signal ceramic pick-up output electric signal with judge coal pulverizer coal position.
Description
Technical field
The utility model is related to regulation or the control field of burning, more particularly to a kind of monitored using many quadrant Noise Methods is ground
The device of coal machine-made egg-shaped or honey-comb coal briquets position.
Background technology
The station boiler that the whole nation there are about 60% or so is configured with pulverized coal preparation system, and pulverized coal preparation system is set using middle warehouse formula powder
For and with low speed coal mill.Because station boiler coal consumption is huge, at most per hour hundreds of tons, in order to reduce the consumption of system of unit powder
Electricity, it is desirable to which low speed coal mill keeps maximum coal load quantity operation (the coal amount under maximum of exerting oneself), while also to ensure coal pulverizer
The qualified coal dust produced within the unit interval is most.Monitor that the device coal load quantity of coal-grinding machine-made egg-shaped or honey-comb coal briquets position mainly uses resistance method, that is, grind
Coal machine entrance, the size for exporting pressure difference, the response lag when shortcoming of resistance method is increase, reduction coal amount, such as grind when increasing coal
Coal machine entrance, outlet pressure difference are first reduced and are further added by, and are influenceed in addition by system ventilation amount size, control accuracy is inadequate.Run people
Member is worried from the excessive powder of coal-grinding machine shaft end dynamic and static gaps, and the coal load quantity for the control that varies with each individual has very big difference, greatly affected
The economy of coal-grinding mechanism powder.Secondly, there are Preliminary Applications using Noise Method monitoring coal pulverizer coal load quantity, be in coal pulverizer
Cylinder is placed around Mike's pickup, and by coal pulverizer coal load quantity, how much the corresponding relation changed with noise frequency determines coal load quantity.
Noise is very big when being run due to coal pulverizer, and many coal pulverizers of site layout project are easily interfered, if in noise pickup
Take amplitude threshold circuit to overcome adjacent coal pulverizer influence of noise, can also make distorted signals itself, influence monitoring accuracy.Although
Many low speed coal mills all take closing soundproof measures reduction noise pollution now, but single-point monitoring frequency domain change is relatively small,
Resolution ratio is not high, it is difficult to which realization is precisely controlled.
Utility model content
In order to solve the above technical problems, the purpose of this utility model be to provide a kind of high use of coal position monitoring precision it is many as
Limit the device of Noise Method monitoring coal-grinding machine-made egg-shaped or honey-comb coal briquets position.
The device of the present utility model that coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods, including coal pulverizer, installed in mill
4N* (1≤N≤4) individual ceramic pick-up and external processor on the outside of coal machine steel cylinder, with the axle of coal pulverizer steel cylinder
Centered on the heart, the outer peripheral sidewall fourth class of coal pulverizer steel cylinder is divided into four quadrant areas, each quadrant area and is uniformly fitted with N* (1
Inclinator is installed on the individual ceramic pick-up of≤N≤4), each ceramic pick-up, the external processor is electrically connected
Connect each ceramic pick-up to read, the electric signal of tracer signal ceramic pick-up output to be to judge coal pulverizer
Coal position.
Further, the madial wall of the coal pulverizer steel cylinder is equipped with the steel watt liner of undulate.
By such scheme, the utility model at least has advantages below：First, ceramic pick-up is a kind of by machinery
Pressure is converted into the senser element of audio signal, when not being attached on vibrating elements, and ceramic pick-up is without any defeated
Go out, its sensitivity is high, transient response is good, its audio signal fed back can reflect many of coal amount in coal pulverizer in time
Few, monitoring precision in coal position is high.2nd, because the intrinsic frequency and coal pulverizer noise spectrum difference of ceramic pick-up are larger, therefore
The noise of live many coal pulverizers does not interfere with the change of ceramic pick-up audio signal, solves former Mike's pickup easy
The problem of affected by noise and distorted signals.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Brief description of the drawings
Fig. 1 is the structural representation for the device that the utility model monitors coal-grinding machine-made egg-shaped or honey-comb coal briquets position using many quadrant Noise Methods.
Embodiment
With reference to the accompanying drawings and examples, embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.
Referring to Fig. 1, many quadrant Noise Methods of use of the preferred embodiment of the utility model one monitor the device of coal-grinding machine-made egg-shaped or honey-comb coal briquets position,
4 ceramic pick-ups 5 and external processor 1 including coal pulverizer, installed in the outside of coal pulverizer steel cylinder 3, with
Exemplified by DTM380/830 coal pulverizers, effective diameter 3.8m, the effective length 8.3m of coal pulverizer steel cylinder 3, the inner side of coal pulverizer steel cylinder 3
Wall is equipped with the steel watt liner 4 of undulate, steel cylinder 3 mixture 2 filled with steel ball and coal, the maximum filling steel ball of steel cylinder 3
Volume is calculated by the 23% of dischargeable capacity, and actual about 20% or so, coal pulverizer is run under critical speed, when steel ball is with steel cylinder 3
When barrel runs to certain altitude, apart from the center of circle, different steel balls falls successively, and relative displacement occurs between steel ball to mill, break
Coal in broken steel cylinder 3, coal is fractured into the coal dust of smaller particle, is carried to separator by air-flow, the qualified coal dust of fineness is by air-flow
Take cyclone separator to, by gas solid separation, qualified coal dust enters Pulverized Coal Bin, is then fed into boiler combustion；Particle is larger not
Qualified coal dust returns coal pulverizer from separator and refaced；Centered on the axle center of coal pulverizer steel cylinder 3, by coal pulverizer steel cylinder
The 3 outer peripheral sidewall fourth class is divided into four quadrant areas, each quadrant area uniformly one ceramic pick-up 5 of laminating, each pressure
Inclinator 6 is installed, external processor 1 electrically connects each ceramic pick-up 5 to read, remember on electroceramics sound pick-up 5
The electric signal of the output of signal ceramic pick-up 5 is recorded to judge the coal position of coal pulverizer.
The operation principle of the device of the present utility model that coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods：According to coal pulverizer
Periodicity steel ball falling, it is difficult to the work characteristics being in step with monitoring element correspondence position, four on the circumferencial direction of steel cylinder 3 as
Four monitoring points of equidistant placement are limited, each monitoring point arranges ceramic pick-up 5 and inclinator 6 from different azimuth simultaneously to incline
The sound that steel ball drops is listened, the accuracy judged is improved.First, the interior coal of coal pulverizer is fewer, steel ball closer to the barrel of steel cylinder 3,
Higher steel ball falls more, pounds steel watt even across coal seam, the vibration frequency of steel cylinder 3 is higher, and amplitude variations are bigger, piezoelectricity pottery
The sound frequency that porcelain sound pick-up 5 is produced is higher；Interior coal in coal pulverizer is more, and the amplitude of steel cylinder 3 is relative to change smaller, piezoelectric ceramics
The sound frequency that sound pick-up 5 is produced is lower.First, the side of judgement of inclinator 6 on each ceramic pick-up 5 is passed through
Position, ceramic pick-up 5 forms different audio signals from different position monitorings, through over-sampling, deposits Che at external
Device 1 is managed, a data exchange and charging is carried out when each ceramic pick-up 5 runs to bottom, external processor 1 is by number
According to drawing coal pulverizer coal load quantity after processing.
Because low speed coal mill belongs to low-speed coal mill, only more than ten turns per minute, one piezoelectricity is installed in each quadrant
Ceramic pick-up 5, then coal pulverizer often rotates a circle, can just obtain 4 times of information content when only installing a sensor, it is intended to subtract
The judgement time of coal load quantity, improves monitoring accuracy in few coal pulverizer.
It the above is only preferred embodiment of the present utility model, be not limited to the utility model, it is noted that for
For those skilled in the art, on the premise of the utility model technical principle is not departed from, if can also make
Dry improvement and modification, these improvement and modification also should be regarded as protection domain of the present utility model.
Claims (2)
1. a kind of device that coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods, it is characterised in that：Including coal pulverizer, installed in mill
4N* (1≤N≤4) individual ceramic pick-up (5) and external processor (1) on the outside of coal machine steel cylinder (3), with coal pulverizer
Centered on the axle center of steel cylinder (3), the outer peripheral sidewall fourth class of coal pulverizer steel cylinder (3) is divided into four quadrant areas, each quadrant area
Uniform be fitted with N* (1≤N≤4) individual ceramic pick-up (5), each ceramic pick-up (5) is provided with inclinator
(6), the external processor (1) electrically connects each ceramic pick-up (5) with reading, tracer signal piezoelectric ceramics pickup
Device (5) output electric signal with judge coal pulverizer coal position.
2. the device according to claim 1 that coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods, it is characterised in that：It is described
The madial wall of coal pulverizer steel cylinder (3) is equipped with the steel watt liner (4) of undulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386765.4U CN206392169U (en) | 2016-12-16 | 2016-12-16 | The device of coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386765.4U CN206392169U (en) | 2016-12-16 | 2016-12-16 | The device of coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206392169U true CN206392169U (en) | 2017-08-11 |
Family
ID=59511997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621386765.4U Expired - Fee Related CN206392169U (en) | 2016-12-16 | 2016-12-16 | The device of coal-grinding machine-made egg-shaped or honey-comb coal briquets position is monitored using many quadrant Noise Methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206392169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106582961A (en) * | 2016-12-16 | 2017-04-26 | 大唐东北电力试验研究所有限公司 | Device for monitoring coal position of coal mill through multiquadrant noise method |
-
2016
- 2016-12-16 CN CN201621386765.4U patent/CN206392169U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106582961A (en) * | 2016-12-16 | 2017-04-26 | 大唐东北电力试验研究所有限公司 | Device for monitoring coal position of coal mill through multiquadrant noise method |
| CN106582961B (en) * | 2016-12-16 | 2019-04-12 | 大唐东北电力试验研究院有限公司 | Using the device of more quadrant Noise Methods monitoring coal-grinding machine-made egg-shaped or honey-comb coal briquets position |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170811 Termination date: 20171216 |