CN109781750A - Ash content of coal detection device and detection method based on X-ray - Google Patents
Ash content of coal detection device and detection method based on X-ray Download PDFInfo
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Abstract
The present invention provides a kind of ash content of coal detection device and detection method based on X-ray, belong to ash content of coal detection technique field.When being detected to ash content of coal, controller receives the first thickness value of first laser rangefinder detection, and the gear of flat material device is determined according to first thickness value, so that the thickness in flat material device adjustment coal seam, reduce influence of the thickness in coal seam to ash content of coal testing result, second laser rangefinder can acquire the thickness value in coal seam, controller is according to the corresponding relationship of second thickness value and energy signal value, it extracts and ash content of coal is calculated according to effective energy signal value, and average ash is calculated according to multiple ash content of coals, improve the accuracy of ash content of coal calculating, in addition, temperature sensor energy real-time detection penetrates the temperature value in the case of source, it is opened or closed according to the first heat dissipation solenoid valve of temperature value control or the second heat dissipation solenoid valve, stablize the temperature for penetrating source case, reduce influence of the temperature to ash content of coal testing result, to improve the detection effect of ash content of coal.
Description
Technical field
The present invention relates to ash content of coal detection technique fields, detect dress in particular to a kind of ash content of coal based on X-ray
It sets and detection method.
Background technique
Ash content of coal refer to coal at 815 DEG C after abundant, complete calcination, mass fraction shared by oxide residue, ash content of coal
It is closely related to the calorific value of coal, for the utilization rate for improving coal, it is necessary to strict control pit ash.
Currently, the measurement method of ash content of coal generally uses the online ash content detection method of calcination assay method, gamma-rays and is based on
The natural radioactive passive ash content of coal detection method of coal.Sampling~sample preparation~ashing is needed to be implemented using the detection of calcination assay method
Process, be fully completed more than 3 hours, detection speed is slow；When ash content detection online using gamma-rays, detection accuracy is inclined
It is low, maintenance is big, and radioactive source energy is big, radiogical safety is poor；The testing principle of passive ash content of coal detection method is to pass through inspection
The natural radioactive element of denier inside minerals is surveyed, and the radioactive element (mostling come from uranium, thorium, potassium) in coal is main
Be present in ash content, therefore content is lower in coal, when leading to passive coal ash separating device detection cleaned coal, raw coal precision compared with
It is low, while quality of material thickness and grain size intervals variation, it will lead to measurement accuracy variation.
It with the universal of X-ray and improves, carries out ash content of coal detection application using X-ray transmission technology or reflection technology
More and more extensive, since influence factor is still more, detection accuracy is smaller, remains in theoretical research stage at present.
To sum up, the ash content of coal detection device influence factor used in the prior art is more, and detection accuracy is lower, causes to detect
As a result undesirable.
Summary of the invention
For above-mentioned problems of the prior art, the present invention provides a kind of, and the ash content of coal based on X-ray detects dress
It sets and detection method, it is possible to reduce influence factor when ash content of coal detects, to improve detection accuracy and detection effect.
In a first aspect, the embodiment of the invention provides a kind of ash content of coal detection device based on X-ray, wherein include:
It include: that controller and the first laser rangefinder connecting with the controller, flat material device, x-ray source, linear array are visited
Survey device and second laser rangefinder；
The first laser rangefinder is used to detect the first thickness value in the coal seam being located on belt conveyor, and will be described
First thickness value is sent to the controller；
The controller is used to determine the gear of flat material device according to the first thickness value；
The flat material device is used to adjust the thickness in the coal seam；
The x-ray source is used to emit X-ray to the coal seam；
The linear array detector is used to acquire the energy signal value of the X-ray through the coal seam, and the energy is believed
Number value is sent to the controller；
The second laser rangefinder is used to detect the second thickness value in the coal seam after adjustment thickness, and thick by described second
Angle value is sent to the controller；The second thickness value has corresponding relationship with the energy signal value that phase acquires in the same time；
The controller is also used to determine useful signal value according to the energy signal value and the second thickness value, according to
The useful signal value calculates the ash value in the coal seam.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein institute
Stating linear array detector includes Data Acquisition Card and muti-piece analog acquisition card；
The analog acquisition card is used to receive the X-ray signal through the coal seam；
The Data Acquisition Card is used to the X-ray signal that every piece of analog acquisition clamping receives being converted to digital quantity
Energy signal value.
With reference to first aspect, the embodiment of the invention provides second of possible embodiments of first aspect, wherein institute
State device further include: penetrate source case and radiator；The x-ray source setting is penetrated in the case of source described；Described penetrate in the case of source also sets
It is equipped with temperature sensor；
The temperature sensor is used to detect the temperature value penetrated in the case of source, and the temperature value is sent to the control
Device processed；
The controller, which is also used to control the radiator according to the temperature value, makes the temperature dimension penetrated in the case of source
It holds within the set range.
The possible embodiment of second with reference to first aspect, the embodiment of the invention provides the third of first aspect
Possible embodiment, wherein the radiator includes heat dissipation solenoid valve and cooling system；
The heat dissipation solenoid valve is used under controller control be switched on or off, to control the work of the cooling system
Make state；
The cooling system penetrates the temperature in the case of source described in being used under the control of the heat dissipation solenoid valve adjust.
The third possible embodiment with reference to first aspect, the embodiment of the invention provides the 4th kind of first aspect
Possible embodiment, wherein the heat dissipation solenoid valve includes two heat dissipation solenoid valves；
When the temperature penetrated in the case of source reaches preset first temperature value, the controller controls described two heat dissipations
A heat dissipation solenoid valve in solenoid valve is connected；
When the temperature penetrated in the case of source reaches preset second temperature value, the controller controls described two heat dissipations
Solenoid valve is turned on；The second temperature value is higher than first temperature value；
When the temperature penetrated in the case of source is down to preset third temperature value, the controller controls described two heat dissipations
A heat dissipation solenoid valve in solenoid valve is closed；The third temperature value is higher than first temperature value, lower than second temperature
Angle value；
When the temperature penetrated in the case of source is down to preset four temperature value, the controller controls described two heat dissipations
Solenoid valve is turned off；4th temperature value is lower than first temperature value.
With reference to first aspect, the embodiment of the invention provides the 5th kind of possible embodiments of first aspect, wherein institute
Stating flat material device includes servo motor, retarder, synchronous belt, lead screw and colter.
Second aspect, the ash content of coal detection method based on X-ray that the embodiment of the invention also provides a kind of, wherein application
The ash content of coal detection device based on X-ray described in any one of first aspect, which comprises
Obtain the first thickness value in the coal seam of first laser rangefinder detection being located on belt conveyor；
The gear that flat material device is determined according to the first thickness value controls the flat material device and runs to described first
The corresponding gear of thickness value；The flat material device is used to adjust the thickness in the coal seam；
It controls x-ray source and emits X-ray to the coal seam after adjustment thickness；
Receive the energy signal value of the X-ray through the coal seam of linear array detector acquisition；
The second thickness value in the coal seam after obtaining the adjustment thickness of second laser rangefinder detection；The second thickness value with
The energy signal value mutually acquired in the same time has corresponding relationship；
The second thickness value pair being located within the effective thickness section is chosen in effective thickness section according to the pre-stored data
The energy signal value answered is as useful signal value；
The ash value in the coal seam is calculated according to the useful signal value.
In conjunction with second aspect, the embodiment of the invention provides the first possible embodiments of second aspect, wherein institute
Stating linear array detector includes Data Acquisition Card and muti-piece analog acquisition card；The Data Acquisition Card is used to adopt every piece of simulation
The X-ray signal that truck receives is converted to the energy signal value of digital quantity；The transmission institute for receiving linear array detector acquisition
The step of stating the energy signal value of the X-ray in coal seam, comprising:
Receive the corresponding energy signal value of every piece of analog acquisition card of the linear array detector；
The step of calculating the ash value in the coal seam according to the useful signal value, comprising:
According to the corresponding useful signal value of every piece of analog acquisition card, the corresponding ash content of coal of every piece of the calculating analog acquisition card
Value, obtains multiple coal ash score values；
Using the weighted average of the multiple coal ash score value as the ash value in the coal seam.
In conjunction with the first possible embodiment of second aspect, the embodiment of the invention provides second of the third aspect
Possible embodiment, wherein the x-ray source is the dual-energy x-ray source for emitting sigmatron and low energy X ray, the energy
Measuring signal value includes high energy signal value and low energy signal value；According to the corresponding useful signal value of every piece of analog acquisition card, calculate every
The step of corresponding coal ash score value of analog acquisition card described in block, comprising:
The corresponding useful signal value of every piece of analog acquisition card is substituted into ash content computation model, obtains every piece of analog acquisition
Block corresponding coal ash score value；The ash content computation model is as follows:
Wherein, Ad is the corresponding coal ash score value of present day analog capture card；A, b and c is timing optimization coefficient, every piece of simulation
Blocking the corresponding timing optimization coefficient can be different；Present day analog capture card when IoL is belt conveyor zero load gathered in advance
Corresponding low energy signal value；Present day analog capture card corresponding high energy signal when IoH is belt conveyor zero load gathered in advance
Value；Present day analog capture card corresponding low energy signal value when IL is belt conveyor normal load coal；IH is that belt conveyor is normal
Present day analog capture card corresponding high energy signal value when carrying coal；M and n is respectively preset characteristic value.
In conjunction with second of possible embodiment of second aspect, the embodiment of the invention provides the third of second aspect
Possible embodiment, wherein the method also includes:
Receive the chemical examination ash value of the coal obtained by live coal qualities test；
According to the ash value that the chemical examination ash value and the ash content of coal detection device obtain, adjusts the ash content and calculate mould
The timing optimization coefficient of type.
The embodiment of the present invention bring it is following the utility model has the advantages that
Ash content of coal detection device and detection method provided in an embodiment of the present invention based on X-ray, when using the device pair
When ash content of coal is detected, coal seam with belt conveyor successively pass through first laser rangefinder, flat material device, x-ray source and
Second laser rangefinder, the detection of first laser rangefinder are located at the first thickness value in the coal seam on belt conveyor, and by first
Thickness value is sent to controller, and then controller is used to determine the gear of flat material device according to first thickness value, equals material device fortune
Row adjusts the thickness in coal seam, to the corresponding position of gear is determined to reduce the shadow of the thickness to coal ash score value testing result in coal seam
It rings.When x-ray source is passed through with belt conveyor in coal seam, x-ray source emits X-ray to coal seam, and linear array detector acquisition is saturating
The energy signal value of the X-ray in coal seam is crossed, and energy signal value is sent to controller, when coal seam as belt conveyor passes through
When second laser rangefinder, second laser rangefinder detects the second thickness value in coal seam, and second thickness value is sent to control
Device makes controller determine useful signal value according to energy signal value and second thickness value, and calculates coal seam according to useful signal value
Ash value, reduce influence of the invalid signals value to ash content of coal testing result, to improve detection accuracy.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification and attached drawing
Specifically noted structure is achieved and obtained.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1~2 are the structural schematic diagram of the ash content of coal detection device based on X-ray provided by one embodiment of the invention；
Fig. 3 is the flow chart of the ash content of coal detection method based on X-ray provided by another embodiment of the present invention；
Fig. 4 is the flow chart of step S314.
Icon:
1- first laser rangefinder；The flat material device of 2-；3-X radiographic source；4- linear array detector；5- second laser rangefinder；
6- temperature sensor；The heat dissipation solenoid valve of 7- first；The heat dissipation solenoid valve of 8- second；9- controller；10- belt conveyor；11- penetrates source
Case；12- radiation pretective hood；13- bracket.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.The component of embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings can be matched with a variety of different
It sets to arrange and design.Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work, belongs to the present invention
The range of protection.
More for existing ash content of coal detection device influence factor, detection accuracy is lower, causes testing result undesirable
The problem of, the embodiment of the invention provides a kind of ash content of coal detection device and detection method based on X-ray, below first to this
The ash content of coal detection device based on X-ray of invention describes in detail.
Embodiment one
A kind of ash content of coal detection device based on X-ray is present embodiments provided, as shown in Figure 1, the device includes: control
Device 9 and the first laser rangefinder 1 being connect with controller 9, flat material device 2, x-ray source 3, linear array detector 4 and second laser
Rangefinder 5.
In conjunction with Fig. 1, first laser rangefinder 1, x-ray source 3 and second laser rangefinder 5 along coal stream direction from left to right
The top of belt conveyor 10 is set, puts down material device 2 and is arranged between x-ray source 3 and belt conveyor 10, linear array detector
4 are arranged in the lower section of belt conveyor 10, and vertically opposite with x-ray source 3.When using device detection coal ash score value, coal
Layer successively swashs by first laser rangefinder 1, flat material device 2, x-ray source 3 and second from left to right with belt conveyor 10
Optar 5.
When 1 underface of first laser rangefinder is passed through in the coal seam on belt conveyor 10, first laser rangefinder 1 is detected
The first thickness value in coal seam on belt conveyor 10, and first thickness value is sent to controller 9, controller 9 is according to the first thickness
Angle value determines the gear of flat material device 2.Flat material device 2 can preset three gears, respectively 100mm, 150mm,
200mm, if first laser rangefinder 1 detect belt conveyor 10 on coal seam first thickness value 110mm~160mm it
Between, controller 9 can determine that the gear of flat material device 2 is 100mm；If first thickness value is between 160mm~210mm, control
Device 9 processed can determine that the gear of flat material device 2 is 150mm；If first thickness value is greater than 210mm, controller 9 can determine flat
The gear for expecting device 2 is 200mm.
After flat material device 2 operation to determining gear, the flat material device 2 of the control of controller 9 adjusts the coal of belt conveyor 10
The thickness of layer.Specifically, putting down material device 2 can be using the flat material device of plow-shape, including with lower component: servo motor, retarder, same
Step band, lead screw and colter, servo motor and retarder as power source and voltage input, synchronous belt and lead screw as transmission mechanism,
Colter is as executing agency, during the thickness in the coal seam that flat material device 2 adjusts belt conveyor 10, servo motor and subtracts
The rotation of fast device control synchronous belt and lead screw, makes synchronous belt and lead screw that colter be driven to run to specified gear, so that colter is nuzzled
The thickness that coal seam is adjusted in the coal seam of belt conveyor 10, ploughs level coal.
When the irradiated region of x-ray source 3 is passed through in the coal seam on belt conveyor 10, x-ray source 3 emits X-ray, X-ray
The work tube voltage in source 3 is 80kV~200kV.In order to improve the detection accuracy of ash content of coal, X-ray that x-ray source 3 emits can be with
Emit the dual-energy x-ray of sigmatron and low energy X ray, in addition, linear collimator is provided at the light-emitting window of x-ray source 3,
The scattering of X-ray can be reduced.
When x-ray source 3 emits X-ray to coal seam, linear array detector 4 receives the energy letter carried through the X-ray in coal seam
Number value, energy signal value is sent to controller 9.Specifically, linear array detector 4 includes muti-piece analog acquisition card and a block number word
Capture card, wherein analog acquisition card is used to receive the X-ray signal through coal seam, and Data Acquisition Card is for adopting every piece of simulation
The X-ray signal that truck receives is converted to the energy signal value of digital quantity, and energy signal value is sent to controller 9.
In order to improve the accuracy of ash content of coal detection, controller 9 controls the second thickness that second laser rangefinder 5 detects coal seam
Angle value, and second thickness value is sent to controller 9, meanwhile, controller 9 receives multiple energy letter that linear array detector 4 is sent
Number value, due to second thickness value and mutually the energy signal value that acquires in the same time is with corresponding relationship, controller 9 can root
Useful signal value is determined according to energy signal value and second thickness value, and the ash value in coal seam is calculated according to useful signal value.Specifically,
Pre-stored thickness valid interval in controller 9 goes the corresponding energy signal value of second thickness value outside valid interval
Fall, the corresponding energy signal value of second thickness value in valid interval is obtained, according to the second thickness value in valid interval
Corresponding energy signal value calculates the coal ash score value in coal seam, can also be according at least in order to improve the accuracy of ash content of coal calculating
Two coal ash score values calculate the average coal ash score value in coal seam.
In order to reduce the influence that temperature value detects coal ash score value, the device further include: penetrate source case 11 and radiator.X
The setting of radiographic source 3 is being penetrated in source case 11, is penetrated in source case 11 and is additionally provided with temperature sensor 6, and temperature sensor 6 penetrates source for detecting
Temperature value in case 11, and temperature value is sent to controller 9.
Specifically, radiator includes heat dissipation solenoid valve and cooling system, according to the difference of use environment, cooling system
Cooling medium in pipeline includes but is not limited to high-pressure blast, cooling water and cooling oil, wherein the pressure of high-pressure blast is at least
0.5MP, heat dissipation solenoid valve include: the first heat dissipation solenoid valve 7 and the second heat dissipation solenoid valve 8, and source case is being penetrated in heat dissipation solenoid valve setting
At wind passage mouth in 11, and it is connected with the cooling medium in the pipeline of cooling system.Specifically, heat dissipation solenoid valve is for controlling
It is switched on or off under the control of device 9 processed, controls the working condition of cooling system, cooling system promotees under the control of heat dissipation solenoid valve
Make or the cooling medium in pipeline is prevented to flow, to adjust the temperature penetrated in source case 11.Illustratively, when cooling medium is high pressure
The process for adjusting and penetrating the temperature in the case of source is explained when wind, when the solenoid valve that radiates is opened, promotes heat in cooling system
Source case 11 is penetrated in high-pressure blast discharge, when the solenoid valve that radiates is closed, heat is prevented to penetrate source with the high-pressure blast discharge in cooling system
Case 11.Specifically, when temperature sensor 6, which detects the temperature value penetrated in source case 11, reaches preset first temperature value, controller 9
The first heat dissipation solenoid valve 7 of control or the second heat dissipation solenoid valve 8 are connected, and make the heat penetrated in source case 11 as high-pressure blast is with lower
Speed discharge；When temperature sensor 6, which detects the temperature value penetrated in source case 11, reaches preset second temperature value, controller 9
Control first heat dissipation solenoid valve 7 and second heat dissipation solenoid valve 8 in be turned on, make the heat penetrated in source case 11 with high-pressure blast with compared with
High speed discharge, wherein second temperature value is higher than the first temperature value；When temperature sensor 6 detects the temperature penetrated in source case 11
When value is down to preset third temperature value, first heat dissipation solenoid valve 7 of the control of controller 9 or the second heat dissipation solenoid valve 8 are closed, and make to penetrate
Heat in source case 11 is discharged with high-pressure blast with lower speed, wherein third temperature value is higher than the first temperature value, lower than the
Two temperature values；When temperature sensor 6, which detects the temperature value penetrated in source case 11, is down to preset four temperature value, controller 9 is controlled
The first heat dissipation solenoid valve 7 of system and the second heat dissipation solenoid valve 8 are turned off, and prevent the heat penetrated in source case 11 as high-pressure blast is discharged,
Wherein, the 4th temperature value is lower than the first temperature value, and controller 9 passes through the first heat dissipation solenoid valve 7 of control and the second heat dissipation solenoid valve 8
Working condition, make the temperature penetrated in source case 11 maintain within the set range, wherein third temperature value is differed with the first temperature value
2 DEG C, the 4th temperature value differs 2 DEG C with second temperature value.
In conjunction with Fig. 1 as can be seen that controller 9 and first laser rangefinder 1, flat material device 2, x-ray source 3, linear array detect
Device 4, second laser rangefinder 5, the heat dissipation solenoid valve 7 of temperature sensor 6, first and the second heat dissipation solenoid valve 8 pass through wired mode
Connection.
In conjunction with Fig. 2, which can also include radiation pretective hood 12 and bracket 13, and radiation pretective hood 12 is arranged in bracket 13
Top, penetrate the top that radiation pretective hood 12 is arranged in source case 11, the setting of x-ray source 3 is being penetrated in source case 11, put down material device 2 and
Linear array detector 4 is arranged in radiation pretective hood 12.
Ash content of coal detection device provided in an embodiment of the present invention based on X-ray, when the use device carries out ash content of coal
When detection, coal seam is surveyed as belt conveyor successively passes through first laser rangefinder, flat material device, x-ray source and second laser
Distance meter, the detection of first laser rangefinder is located at the first thickness value in the coal seam on belt conveyor, and first thickness value is sent
To controller, then controller is used to determine the gear of flat material device according to first thickness value, controls flat material device and adjusts coal seam
Thickness, the influence of the thickness in coal seam to the testing result of ash content of coal is reduced, when coal seam as belt conveyor passes through x-ray source
When, x-ray source emits X-ray to coal seam, linear array detector acquisition through the X-ray in coal seam energy signal value, and by energy
Signal value is sent to controller, when second laser rangefinder is passed through with belt conveyor in coal seam, the inspection of second laser rangefinder
The second thickness value in coal seam is surveyed, and second thickness value is sent to controller, keeps controller thick according to energy signal value and second
Angle value determines useful signal value, and the ash value in coal seam is calculated according to useful signal value, reduces invalid signals value to ash content of coal
The influence of testing result, in addition, penetrate the temperature value in the case of source by temperature sensor energy real-time detection, according to temperature value control the
One heat dissipation solenoid valve and the second heat dissipation solenoid valve open or close, and by heat as source case is penetrated in high-pressure blast discharge, reduce temperature
The influence to the testing result of ash content of coal is spent, to be integrally improved detection effect.
Embodiment two
The ash content of coal detection method based on X-ray that the embodiment of the invention provides a kind of, as shown in figure 3, this method comprises:
Step S302 obtains the first thickness value in the coal seam of first laser rangefinder detection being located on belt conveyor.
It is identical with a upper embodiment, under first laser rangefinder is passed through just in the coal seam in area to be detected on belt conveyor
Fang Shi, first laser rangefinder detect the first thickness value in the coal seam in the area to be detected of belt conveyor.
Step S304 determines the gear of flat material device according to first thickness value, control flat material device run to the first thickness
The corresponding gear of angle value.
Step S306, control x-ray source emit X-ray to the coal seam after adjustment thickness.
The dual intensity X in the dual-energy x-ray source that the X-ray that x-ray source 3 emits can emit sigmatron and low energy X ray is penetrated
The dual-energy x-ray of line, in addition, being provided with linear collimator at the light-emitting window of x-ray source 3, it is possible to reduce the scattering of X-ray.
Step S308 receives the energy signal value of the X-ray through coal seam of linear array detector acquisition.
Identical with a upper embodiment, linear array detector includes muti-piece analog acquisition card and one piece of Data Acquisition Card, simulation
Capture card is used to receive the X-ray signal through coal seam, and Data Acquisition Card is used to every piece of analog acquisition being clamped the X-ray received
Signal is converted to the energy signal value of digital quantity.Since x-ray source is the dual-energy x-ray for emitting sigmatron and low energy X ray
Source, therefore the energy signal value that every piece of analog acquisition clamping receives includes high energy signal value and low energy signal value, analog acquisition card
The X-ray signal for penetrating coal seam is received, then Data Acquisition Card is converted to the X-ray signal that every piece of analog acquisition clamping receives
The energy signal value of digital quantity.
Step S310, the second thickness value in the coal seam after obtaining the adjustment thickness of second laser rangefinder detection.
It, can be with real-time detection second thickness value, and by second thickness value when second laser rangefinder detects second thickness value
It is sent to controller.
It is thick to choose second be located within effective thickness section for step S312, effective thickness section according to the pre-stored data
The corresponding energy signal value of angle value is as useful signal value.
Wherein, second thickness value has corresponding relationship with the energy signal value that phase acquires in the same time.Illustratively, if line
Array detector includes four analog acquisition cards, it is assumed that the gear that flat material device selects is 150mm, linear array detector respectively in t1,
Two moment of t2 obtain energy signal value, are if four analog acquisitions of linear array detector are stuck in the energy value that the t1 moment acquires
N1, n2, n3, n4 are n5, n6, n7, n8 in the energy value that the t2 moment acquires, and then linear array detector is by t1 moment and t2 moment
Eight energy values detected are sent to controller, after controller receives above-mentioned eight energy values, due to second thickness value and phase
The energy signal value acquired in the same time has corresponding relationship, and the corresponding common thickness of four analog acquisition card synchronizations
Value, if it is 140mm that four analog acquisitions, which are stuck in the corresponding thickness value of energy value n1, n2, n3, n4 that the t1 moment acquires, in t2
The moment corresponding thickness value of energy value n5, n6, n7, n8 of acquisition is respectively 170mm, due to the second thickness value of controller storage
Valid interval are as follows: 140mm~160mm, then the energy value that the t2 moment acquires as invalid signals value and is removed this by controller
The energy value that the t1 moment acquires as useful signal value and is retained effective signal value by invalid signals value.
Step S314 calculates the ash value in coal seam according to useful signal value.
Specifically, which can be realized by method shown in Fig. 4.
It is corresponding to calculate every piece of analog acquisition card according to the corresponding useful signal value of every piece of analog acquisition card by step S3141
Coal ash score value obtains multiple coal ash score values.
Then step S312, the corresponding useful signal value of every piece of analog acquisition card is respectively n2, n3, n4, n6 and n8.
Specifically, according to the corresponding useful signal value of every piece of analog acquisition card, the corresponding coal of every piece of analog acquisition card is calculated
The step of ash value, comprising:
The corresponding useful signal value of every piece of analog acquisition card is substituted into ash content computation model, obtains every piece of analog acquisition card pair
The coal ash score value answered；Ash content computation model is as follows:
Wherein, Ad is the corresponding coal ash score value of present day analog capture card；A, b and c is timing optimization coefficient；IoL is preparatory
Present day analog capture card corresponding low energy signal value when the belt conveyor zero load of acquisition；IoH is belt conveying gathered in advance
Present day analog capture card corresponding high energy signal value when machine zero load；Present day analog capture card when IL is belt conveyor normal load coal
Corresponding low energy signal value；Present day analog capture card corresponding high energy signal value when IH is belt conveyor normal load coal；M and n
Respectively preset characteristic value.
Step S3142, using the weighted average of multiple coal ash score values as the ash value in coal seam.
In order to improve the accuracy and detection accuracy of ash content computation model, staff can periodically be chemically examined at scene, then
The chemical examination ash value of the coal obtained by live coal qualities test is uploaded to controller, controller is according to chemical examination ash value and coal ash
The ash value that point detection device obtains adjusts the timing optimization coefficient of ash content computation model.
Ash content of coal detection method provided in an embodiment of the present invention based on X-ray detects coal ash score value when using
When, controller obtains the first thickness value in the coal seam of first laser rangefinder detection being located on belt conveyor first, according to
First thickness value determines the gear of flat material device, controls flat material device and runs to gear corresponding with first thickness value, with drop
Influence of the thickness in low coal seam to the testing result of ash content of coal controls X when x-ray source is passed through with belt conveyor in coal seam
Radiographic source emits X-ray to the coal seam after adjustment thickness, while linear array detector acquisition is through the energy signal of the X-ray in coal seam
Value, the coal when second laser rangefinder is passed through with belt conveyor in coal seam, after second laser rangefinder detection adjustment thickness
The second thickness value of layer simultaneously sends thickness value to controller, then controller effective thickness section according to the pre-stored data, choosing
Second thickness of the fetch bit within effective thickness section is worth corresponding energy signal value as useful signal value, and according to effective letter
Number value calculates the ash value and average ash value in the coal seam, reduces influence of the invalid signals value to ash content of coal testing result,
At the same time it can also the timing optimization coefficient of timing adjustment ash content computation model, the accuracy and detection of ash content computation model are improved
Precision.
Ash content of coal detection device and detection method provided in an embodiment of the present invention based on X-ray technology having the same is special
Sign, so also can solve identical technical problem, reaches identical technical effect.
It should be noted that in embodiment provided by the present invention, it should be understood that disclosed system and method, it can
To realize by another way.The apparatus embodiments described above are merely exemplary, for example, the unit is drawn
Point, only a kind of logical function partition, there may be another division manner in actual implementation, in another example, multiple units or group
Part can be combined or can be integrated into another system, or some features can be ignored or not executed.It is described to be used as separation unit
The unit that part illustrates may or may not be physically separated, and component shown as a unit can be or can also
Not to be physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to reality
Needs some or all of the units may be selected to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in embodiment provided by the invention can integrate in one processing unit, it can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
In addition, term " first ", " second ", " third " are used for description purposes only, it is not understood to indicate or imply phase
To importance.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.
Claims (10)
1. a kind of ash content of coal detection device based on X-ray characterized by comprising controller and connect with the controller
First laser rangefinder, flat material device, x-ray source, linear array detector and second laser rangefinder；
The first laser rangefinder is used to detect the first thickness value in the coal seam on the belt conveyor, and by described first
Thickness value is sent to the controller；
The controller is used to determine the gear of flat material device according to the first thickness value；
The flat material device is used to adjust the thickness in the coal seam；
The x-ray source is used to emit X-ray to the coal seam；
The linear array detector is used to acquire the energy signal value of the X-ray in the transmission coal seam, and by the energy signal value
It is sent to the controller；
The second laser rangefinder is used to detect the second thickness value in the coal seam after adjusting thickness, and by the second thickness value
It is sent to the controller；The second thickness value has corresponding relationship with the energy signal value that phase acquires in the same time；
The controller is also used to determine useful signal value according to the energy signal value and the second thickness value, according to described
Useful signal value calculates the ash value in the coal seam.
2. the apparatus according to claim 1, which is characterized in that the linear array detector includes Data Acquisition Card and muti-piece mould
Quasi- capture card；
The analog acquisition card is used to receive the X-ray signal through the coal seam；
The Data Acquisition Card is used to be converted to the X-ray signal that every piece of analog acquisition clamping receives the energy of digital quantity
Signal value.
3. the apparatus according to claim 1, which is characterized in that described device further include: penetrate source case and radiator；It is described
X-ray source setting is penetrated in the case of source described；Described penetrate in the case of source is additionally provided with temperature sensor；
The temperature sensor is used to detect the temperature value penetrated in the case of source, and the temperature value is sent to the control
Device；
The controller, which is also used to control the radiator according to the temperature value, maintains the temperature penetrated in the case of source
In setting range.
4. device according to claim 3, which is characterized in that the radiator includes heat dissipation solenoid valve and heat dissipation system
System；
The heat dissipation solenoid valve is used under controller control be switched on or off, to control the work shape of the cooling system
State；
The cooling system penetrates the temperature in the case of source described in being used under the control of the heat dissipation solenoid valve adjust.
5. device according to claim 4, which is characterized in that the heat dissipation solenoid valve includes two heat dissipation solenoid valves；
When the temperature penetrated in the case of source reaches preset first temperature value, the controller controls described two heat dissipation electromagnetism
A heat dissipation solenoid valve in valve is connected；
When the temperature penetrated in the case of source reaches preset second temperature value, the controller controls described two heat dissipation electromagnetism
Valve is turned on；The second temperature value is higher than first temperature value；
When the temperature penetrated in the case of source is down to preset third temperature value, the controller controls described two heat dissipation electromagnetism
A heat dissipation solenoid valve in valve is closed；The third temperature value is higher than first temperature value, is lower than the second temperature value；
When the temperature penetrated in the case of source is down to preset four temperature value, the controller controls described two heat dissipation electromagnetism
Valve is turned off；4th temperature value is lower than first temperature value.
6. the apparatus according to claim 1, which is characterized in that the flat material device includes servo motor, retarder, synchronization
Band, lead screw and colter.
7. a kind of ash content of coal detection method based on X-ray, which is characterized in that be applied to any one of claim 1~6 institute
The ash content of coal detection device based on X-ray stated, which comprises
Obtain the first thickness value in the coal seam of first laser rangefinder detection being located on belt conveyor；
The gear that flat material device is determined according to the first thickness value, control the flat material device run to the first thickness
It is worth corresponding gear；The flat material device is used to adjust the thickness in the coal seam；
It controls x-ray source and emits X-ray to the coal seam after adjustment thickness；
Receive the energy signal value of the X-ray through the coal seam of linear array detector acquisition；
The second thickness value in the coal seam after obtaining the adjustment thickness of second laser rangefinder detection；The second thickness value with it is identical
The energy signal value of moment acquisition has corresponding relationship；
It is corresponding to choose the second thickness value being located within the effective thickness section for effective thickness section according to the pre-stored data
Energy signal value is as useful signal value；
The ash value in the coal seam is calculated according to the useful signal value.
8. the method according to the description of claim 7 is characterized in that the linear array detector includes Data Acquisition Card and muti-piece mould
Quasi- capture card；The Data Acquisition Card is used to the X-ray signal that every piece of analog acquisition clamping receives being converted to digital quantity
Energy signal value；The step of energy signal value of the X-ray through the coal seam for receiving linear array detector acquisition, packet
It includes:
Receive the corresponding energy signal value of every piece of analog acquisition card of the linear array detector transmission；
The step of calculating the ash value in the coal seam according to the useful signal value, comprising:
According to the corresponding useful signal value of every piece of analog acquisition card, the corresponding coal ash score value of every piece of analog acquisition card is calculated,
Obtain multiple coal ash score values；
Using the weighted average of the multiple coal ash score value as the ash value in the coal seam.
9. according to the method described in claim 8, it is characterized in that, the x-ray source is that transmitting sigmatron and low energy X are penetrated
The dual-energy x-ray source of line, the energy signal value include high energy signal value and low energy signal value；According to every piece of analog acquisition card pair
The useful signal value answered, the step of calculating every piece of analog acquisition card corresponding coal ash score value, comprising:
The corresponding useful signal value of every piece of analog acquisition card is substituted into ash content computation model, obtains every piece of analog acquisition card pair
The coal ash score value answered；The ash content computation model is as follows:
Wherein, Ad is the corresponding coal ash score value of present day analog capture card；A, b and c is timing optimization coefficient, every piece of analog card pair
The timing optimization coefficient answered is different；Present day analog capture card is corresponding when IoL is belt conveyor zero load gathered in advance
Low energy signal value；Present day analog capture card corresponding high energy signal value when IoH is belt conveyor zero load gathered in advance；IL is
Present day analog capture card corresponding low energy signal value when belt conveyor normal load coal；IH works as when being belt conveyor normal load coal
The corresponding high energy signal value of front simulation capture card；M and n is respectively preset characteristic value.
10. according to the method described in claim 9, it is characterized in that, the method also includes:
Receive the chemical examination ash value of the coal obtained by live coal qualities test；
According to the ash value that the chemical examination ash value and the ash content of coal detection device obtain, the ash content computation model is adjusted
Timing optimization coefficient.
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| CN111604163A (en) * | 2020-04-17 | 2020-09-01 | 天津德通电气股份有限公司 | High-precision dense medium intelligent control system and method for coking coal preparation plant |
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