CN208505422U - A kind of coal ash detection device and system for coal unit - Google Patents
A kind of coal ash detection device and system for coal unit Download PDFInfo
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- CN208505422U CN208505422U CN201821035666.0U CN201821035666U CN208505422U CN 208505422 U CN208505422 U CN 208505422U CN 201821035666 U CN201821035666 U CN 201821035666U CN 208505422 U CN208505422 U CN 208505422U
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Abstract
The coal ash detection system for coal unit in the utility model, pass through the setting of reasonable signal processing unit, the detection that the ray that coal ash in ash bucket distributes is carried out, passive nucleon measuring technique is used, On-line sampling system is carried out to the coal ash height in container using the naturally radioactive of tested material in a non-contact manner.The passive nucleon measuring technique dissipates target nucleus signal using multiple spot and assists processing technique, is finely divided filtering without using radioactive source, and by signal, not only increase the precision of measurement, and detecting module is mounted on external container, installs and debug more convenient and simple, easy to repair and replacement detecting module.
Description
Technical field
The utility model relates to coal ash detection technique fields, detect dress more particularly to a kind of coal ash for coal unit
It sets and system.
Background technique
The coal-burning power plant in China burns in boiler furnace by coal dust generates heat, then delivers heat to working medium,
For generating the steam of specific pressure and temperature, driving Turbo-generator Set power generation.However coal dust is in the burning of boiler
A large amount of coal ash can be generated, if coal ash is discharged from chimney, atmosphere will certainly be polluted.In order to increase economic efficiency and protection ring
Coal ash using the effect of strong electrical field by coal ash inspiration ash bucket, then is sent into down by the effect of air pressure by border, the coal ash technology of use
In the grey library of grade, the recycling and reuse of coal ash thus may be implemented.
Before coal ash recycling and reuse, need to detect coal ash by level-sensing device.Current level-sensing device
It is provided with sensor, the mounting means of sensor is mostly plug-in type, and level-sensing device probe is directly contacted with ash.
Due to the poor fluidity of the powderies such as coal ash and solid material, the characteristics such as easily coheres, it is made to be easy to be attached to container
On inner wall and material position flowmeter sensor, level-sensing device is caused frequently to be reported by mistake.
Utility model content
In view of this, the present invention provides a kind of coal ash detection devices and system for coal unit, realize accurate
The technical purpose of detection.
In order to solve technical problem as above, the utility model discloses:
A kind of coal ash detection device for coal unit, the device are installed on outside ash bucket to be measured, comprising: are sequentially connected
Detecting module, signal conversion module, signal pre-amplifying module, signal screening module, signal compensation module and signal processing
Module.
The detecting module is configured to launching electronics pulse；
The signal conversion module, which is configured at, to be received gamma-rays and is converted into pulse photoelectron；
Signal pre-amplifying module, signal screening module and signal compensation module successively put the pulse photoelectron
Greatly, it identifies and compensates, and by the signal processing module according to coal ash in the pulsed light electronic frequency signal and the ash bucket
Height relationships calculate testing result；
The signal processing module is configured with passive nucleon measurement module.
Preferably, the passive nucleon measurement module dissipates target nucleus signal association processing unit configured with multiple spot.
Preferably, device further include: display device and wireless communication apparatus.
Preferably, the signal processing module is configured to STM8S105K6 single-chip microcontroller.
The invention also discloses:
A kind of coal ash detection system for coal unit, comprising: ash bucket to be measured and above-mentioned coal ash detection device, the device
It is installed on outside ash bucket to be measured.
The coal ash detection device and system for coal unit in the utility model, passes through reasonable signal processing unit
Setting, the detection that the ray distributed to coal ash in ash bucket carries out uses passive nucleon measuring technique, in a non-contact manner
On-line sampling system is carried out to the coal ash height in container using the naturally radioactive of tested material.The passive nucleon measures skill
Art dissipates target nucleus signal using multiple spot and assists processing technique, is finely divided filtering without using radioactive source, and by signal, not only increases
The precision of measurement, and detecting module is mounted on external container, installs and debug more convenient and simple, easy to repair and replacement spy
Survey module.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.It should be evident that the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of coal ash structure of the detecting device schematic diagram for coal unit disclosed in the utility model embodiment;
Fig. 2 is a kind of coal ash detection system structure for coal unit disclosed in the utility model embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model embodiment discloses a kind of coal ash detection device and system for coal unit, realizes accurate inspection
The technical purpose of survey.
For the clear of embodiment and facilitate understanding, the physical principle of the utility model be illustrated first:
Gamma-rays has very strong penetration power, and when passing through substance, remitted its fury is related to the density of substance, index of coincidence
Rule.Dominant mechanism is to lose its energy after with substance photoelectric effect, Compton effect and pair effect occur for gamma-rays photon
Amount.The coal ash detection device utilizes the principle of these three effects of gamma-rays.As the increase of coal height is closer to material position
Meter, radioactivity is stronger, and the current pulse signal detected is stronger；If the height of coal is lower, with the distance of level-sensing device
Remoter, then its radioactivity is weaker, therefore current pulse signal is with regard to smaller.
Fig. 1 is shown: a kind of coal ash detection device for coal unit, the device are installed on outside ash bucket to be measured, packet
It includes: sequentially connected detecting module 1, signal conversion module 2, signal pre-amplifying module 3, signal screening module 4, signal compensation
Module 5 and signal processing module 6.
The detecting module 1 is configured to launching electronics pulse；
The signal conversion module 2, which is configured at, to be received gamma-rays and is converted into pulse photoelectron；
Signal pre-amplifying module 3, signal screening module 4 and signal compensation module 5 successively to the pulse photoelectron into
Row amplification, identification and compensation, and by the signal processing module 6 according in the pulsed light electronic frequency signal and the ash bucket
Coal ash height relationships calculate testing result；
The signal processing module 6 is configured with passive nucleon measurement module.
Based on the gamma-rays discharged when radionuclide decay in coal ash, therefore can be produced by coal ash in detection ash bucket
Gamma-rays and detecting module 1 in effect, and by the signal conversion module 2 generate photoelectron；
Then irregular current pulse signal is exported after signal pre-amplifying module 3；The pulse number of output per second with
Gamma-ray intensity direct proportionality
Shaping compensation is carried out to signal by signal identification module 4 and signal compensation module 5, pulse signal is sent to letter
Number processing module 6, is converted into controlling level according to the size of collected pulse signal frequency to judge the height of coal ash in ash bucket
Degree；
In real time, it is determined to be the output of high-order or low alarm according to preset value.
Preferably, the passive nucleon measurement module 6 dissipates target nucleus signal association processing unit configured with multiple spot.
Technology used by signal processing module 6 is passive nucleon measurement module 6, utilizes measured object in a non-contact manner
The naturally radioactive of material carries out On-line sampling system to level (liquid level) situation of change in container, radiationless, environmentally protective；
Dissipating target nucleus signal by the multiple spot configured assists processing unit that signal is finely divided filtering, to reach not by material
Physicochemical properties, measured object temperature, gas pressure in feed bin, material shapes in storehouse, bulkhead bridging, etc. influence.It is not only
Improve the precision of measurement, and detecting module is mounted on external container, install and debug it is more convenient and simple, it is easy to repair and
Replace detecting module.The container that can be used for various shapes measures.
Preferably, device further include: display device 7 and wireless communication apparatus 8.
The display device 7 can be uploaded to host computer by the wireless communication apparatus for showing measurement result.
Preferably, the signal processing mould 6 is configured to STM8S105K6 single-chip microcontroller.
The signal processing mould 6 passes through the umber of pulse detected, so that it may calculate the height of coal ash.Simultaneously in system
In host computer it is observed that in ash bucket level-sensing device change procedure.
The STM8S105K6 single-chip microcontroller, cost is relatively low, and single performance is very stable.
Referring to fig. 2, it illustrates a kind of coal ash detection systems for coal unit, comprising: ash bucket 21 to be measured and above-mentioned
Coal ash detection device 22, the device 22 are installed on outside ash bucket 21 to be measured.
The structure and working principle of the coal ash detection device 22 illustrate referring to Fig. 1 and its pair it should be noted that no longer superfluous herein
It states.
In summary:
The coal ash detection device and system for coal unit in the utility model, passes through reasonable signal processing unit
Setting, the detection that the ray distributed to coal ash in ash bucket carries out uses passive nucleon measuring technique, in a non-contact manner
On-line sampling system is carried out to the coal ash height in container using the naturally radioactive of tested material.The passive nucleon measures skill
Art dissipates target nucleus signal using multiple spot and assists processing technique, is finely divided filtering without using radioactive source, and by signal, not only increases
The precision of measurement, and detecting module is mounted on external container, installs and debug more convenient and simple, easy to repair and replacement spy
Survey module.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be real in other embodiments in the case where not departing from the spirit or scope of the utility model embodiment
It is existing.Therefore, the utility model embodiment is not intended to be limited to the embodiments shown herein, and is to fit to and this paper institute
Principle disclosed and the consistent widest scope of features of novelty.
Claims (5)
1. a kind of coal ash detection device for coal unit, which is characterized in that the device is installed on outside ash bucket to be measured, packet
It includes: sequentially connected detecting module, signal conversion module, signal pre-amplifying module, signal screening module, signal compensation module
And signal processing module；
The detecting module is configured to launching electronics pulse；
The signal conversion module, which is configured at, to be received gamma-rays and is converted into pulse photoelectron；
Signal pre-amplifying module, signal screening module and signal compensation module successively amplify the pulse photoelectron,
Identification and compensation, and by the signal processing module according to coal ash height in the pulsed light electronic frequency signal and the ash bucket
Relationship calculates testing result；
The signal processing module is configured with passive nucleon measurement module.
2. being used for the coal ash detection device of coal unit as described in claim 1, which is characterized in that the passive nucleon measurement
Module dissipates target nucleus signal configured with multiple spot and assists processing unit.
3. being used for the coal ash detection device of coal unit as claimed in claim 1 or 2, which is characterized in that
Further include: display device and wireless communication apparatus.
4. being used for the coal ash detection device of coal unit as claimed in claim 3, which is characterized in that the signal processing module
It is configured to STM8S105K6 single-chip microcontroller.
5. a kind of coal ash detection system for coal unit characterized by comprising ash bucket to be measured and claim 1-4 mono-
Item coal ash detection device, the device are installed on outside ash bucket to be measured.
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| CN201821035666.0U CN208505422U (en) | 2018-07-02 | 2018-07-02 | A kind of coal ash detection device and system for coal unit |
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| CN201821035666.0U CN208505422U (en) | 2018-07-02 | 2018-07-02 | A kind of coal ash detection device and system for coal unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110917535A (en) * | 2019-12-10 | 2020-03-27 | 徐州科睿安防科技有限公司 | Formula hanging fire extinguisher is reminded to fire control safety intelligence |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110917535A (en) * | 2019-12-10 | 2020-03-27 | 徐州科睿安防科技有限公司 | Formula hanging fire extinguisher is reminded to fire control safety intelligence |
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