CN112946067A - Ultrasonic wave ore pulp concentration on-line detector and intelligent control terminal - Google Patents
Ultrasonic wave ore pulp concentration on-line detector and intelligent control terminal Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
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- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Abstract
The utility model discloses an ultrasonic wave ore pulp concentration on-line measuring appearance and intelligent control terminal, this detector includes: the ultrasonic detector comprises a detector body, an ultrasonic transmitting transducer, an ultrasonic receiving transducer, a temperature sensor, a signal processor, a controller and a power supply; the detector body is provided with a connecting component which is used for mounting the detector body on a pipeline to be detected; the ultrasonic transmitting transducer and the ultrasonic receiving transducer are symmetrically arranged on the detector body, and the ultrasonic transmitting transducer is used for transmitting an ultrasonic signal with fixed frequency to a pipeline to be detected; the ultrasonic receiving transducer is used for receiving the attenuated ultrasonic signals; the temperature sensor is used for measuring the temperature of ore pulp in the pipeline to be measured; the signal processor is arranged in the detector body and used for processing the ultrasonic signals and the temperature of the ore pulp, calculating the attenuation coefficient of the ultrasonic, and obtaining the concentration measurement value of the ore pulp in the pipeline to be measured according to the relation between the preset attenuation coefficient and the ore pulp concentration.
Description
Technical Field
The utility model relates to an ultrasonic detection technical field especially relates to an ultrasonic wave ore pulp concentration on-line measuring appearance and intelligent control terminal.
Background
At present, in the dry tailing discharge process, ore pulp is subjected to solid-liquid separation in a sedimentation tank, and clear water is recycled. In order to increase the sedimentation speed of the ore sand and improve the production efficiency, a flocculating agent is required to be added into the sedimentation tank.
It is common practice to introduce a pre-prepared flocculant solution at a flow rate into a settling tank for settling together with tailings slurry from a mill. However, the tailings slurry concentration (i.e., sand content) from the mill varies, and as the incoming concentration decreases, waste of flocculant occurs; on the contrary, the flocculant is insufficient, the precipitation time is influenced, and the production efficiency is reduced. In order to make full use of the flocculant, the flow of the flocculant solution is changed along with the change of the pulp concentration, so that the tailing pulp concentration in the pipeline needs to be detected on line to control the opening degree of a flocculant valve.
The present inventors have conducted extensive studies on the detection of the concentrations of two phases, and found that the methods such as the capacitance method, the photoelectric method, the differential pressure method, and the radiation method are applicable, but each of them has advantages and disadvantages. Wherein: the capacitance method is not easy to corrode and has poor load capacity; the photoelectric method has lower precision; the differential pressure sensor has large volume; the ray method has wide range and pollution. In addition, most of these detection methods are off-line static detection.
Disclosure of Invention
In view of this, the present disclosure provides an ultrasonic ore pulp concentration online detector and an intelligent control terminal, which can realize high-precision and high-efficiency online detection to obtain the ore pulp concentration, and at least partially solve the problems in the prior art.
Therefore, the present disclosure discloses an ultrasonic online pulp concentration detector, which includes: the ultrasonic detector comprises a detector body, an ultrasonic transmitting transducer, an ultrasonic receiving transducer, a temperature sensor, a signal processor, a controller and a power supply; wherein: the detector body is provided with a connecting component, and the connecting component is used for mounting the detector body on a pipeline to be detected; the ultrasonic transmitting transducer and the ultrasonic receiving transducer are symmetrically arranged on the detector body, and the ultrasonic transmitting transducer is used for transmitting an ultrasonic signal with fixed frequency to the pipeline to be detected; the ultrasonic receiving transducer is used for receiving attenuated ultrasonic signals; the temperature sensor is used for measuring the temperature of ore pulp in the pipeline to be measured; the controller is connected with the power supply and is used for controlling the ultrasonic transmitting transducer, the ultrasonic receiving transducer, the temperature sensor and the signal processor; the signal processor is used for processing the ultrasonic signal and the pulp temperature; and the temperature compensation device is used for calculating the attenuation coefficient of the ultrasonic wave according to the emission intensity of the ultrasonic wave and the intensity of the received ultrasonic wave signal, performing temperature compensation according to the relation between the preset temperature and the attenuation coefficient, and further obtaining the concentration measurement value of the ore pulp in the pipeline to be measured according to the relation between the preset attenuation coefficient and the ore pulp concentration.
As an embodiment of the present disclosure, the ultrasonic ore pulp concentration online detector may further include: the communication assembly is arranged in the detector body, is connected with the controller and is used for realizing automatic control of detection and/or outputting the concentration measurement value; and/or the input/output assembly is arranged on the detector body, is connected with the controller and is used for inputting an operation instruction and/or performing operation processing on data output by the input/output assembly; and for displaying the concentration measurements and associated measurement parameters.
As an embodiment of the present disclosure, the communication component further includes: a serial communication circuit for outputting a digital signal of the concentration measurement value; the current output circuit is used for outputting an analog signal of the concentration measured value; and/or a relay output circuit for realizing the automatic control of the controller.
As an embodiment of the present disclosure, the input/output assembly includes an input/output circuit and an operation reading panel; the input and output circuit is connected with the controller and the operation reading panel; the operation reading panel is arranged on a front cover plate of the detector body and used for displaying data and operating a system.
As an embodiment of the present disclosure, the operation reading panel is further configured with a display screen, and the display screen is a touch display screen; the display screen is connected with the input and output circuit and is used for password setting, unit setting, range setting, and selection of a calibration mode, ultrasonic frequency and waveform calibration; or the operation reading panel is further provided with a display screen and operation keys, and the operation keys comprise an upper direction key, a lower direction key, a left direction key, a right direction key, an affirmation instruction key and a return instruction key and are used for password setting, unit setting, range setting, and selection of a calibration mode, ultrasonic frequency and waveform calibration.
As an embodiment of the present disclosure, the signal processor further includes a filter circuit, an amplification circuit, and a temperature measurement circuit; the controller, the filter circuit, the amplifying circuit, the temperature measuring circuit, the serial communication circuit, the current output circuit, the relay output circuit and the input and output circuit are integrally arranged on a PCB (printed circuit board); the controller is connected with the filter circuit, the amplifying circuit, the temperature measuring circuit, the serial communication circuit, the current output circuit, the relay output circuit and the input and output circuit respectively.
As an embodiment of the present disclosure, the PCB is accommodated in a circuit chamber formed at both sides of the detector body; a wire through hole is formed between the circuit chambers, and a detachable side cover plate is arranged at the opening of the circuit chamber; and/or the temperature sensor is arranged on a shell on the ultrasonic transmitting transducer or the ultrasonic receiving transducer; and/or the amplifying circuit adopts bipolar signal amplification.
As an embodiment of the present disclosure, the ultrasonic transmitting transducer and the ultrasonic receiving transducer are installed in a direct-projection manner and are fixedly connected to the detector body; sealing rings are arranged among the ultrasonic transmitting transducer, the ultrasonic receiving transducer and the detector body; and/or the connecting component is a connecting flange, and the detector body is horizontally arranged on the pipeline to be detected through the connecting flange when in work; when the ore pulp flow velocity in the pipeline to be detected is too low, the detector body is vertically installed.
As an embodiment of the present disclosure, the distance between the emitting surface of the ultrasonic emitting transducer and the receiving surface of the ultrasonic receiving transducer is the same as the diameter of the pipe to be measured, and the distance between the emitting surfaces of the two transducers is the same as the diameter of the through-flow pipe; the ultrasonic transmitting transducer adopts a direct digital frequency synthesizer to synthesize a signal source to transmit ultrasonic waves.
As an embodiment of the present disclosure, the relationship between the pulp concentration β and the attenuation coefficient α may be expressed as: beta is 9.01 (alpha-40.19)0.469。
Correspondingly, this disclosure also discloses an intelligent control terminal, includes: the communication device is used for receiving the concentration measured value detected by the ultrasonic ore pulp concentration online detector disclosed by any one of the embodiments; and/or the ultrasonic pulp concentration online detector is used for sending a working instruction to the ultrasonic pulp concentration online detector; the control system is used for controlling the opening degree of a flocculant valve according to the concentration measured value so as to adaptively adjust the flow of the flocculant solution based on the change of the pulp concentration; and the display device is used for displaying the output data of the ultrasonic online ore pulp concentration detector and implementing the change of the flow of the flocculant solution along with the ore pulp concentration.
Compared with the prior art, the technical scheme disclosed by the disclosure has obvious beneficial effects:
in the embodiment of the disclosure, by utilizing the characteristic that the ultrasonic wave is subjected to scattering attenuation when encountering suspended particles during propagation in the ore pulp, the relation between the attenuation coefficient of the ultrasonic wave and the concentration value of the ore pulp and the relation between the temperature and the attenuation coefficient are calibrated, and then the corresponding concentration value of the ore pulp is obtained.
The ultrasonic online detector for the ore pulp concentration is simple in structure, low in price, strong in anti-interference performance and convenient to use, can obtain a high-precision ore pulp concentration measurement value, and is very suitable for detecting the concentration of a solid phase in a solid-liquid two-phase flow. In addition, the ultrasonic wave can not bring noise pollution, is harmless to human bodies, and is very suitable for measuring the concentration of the ore pulp.
It is to be understood that the teachings of the present invention need not achieve all of the above-described benefits, but rather that specific embodiments may achieve specific technical results, and that other embodiments of the present invention may achieve benefits not mentioned above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating the composition of an ultrasonic pulp concentration on-line detector in an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating data relationships among components of the detector in the embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating a control relationship between components of the detector in the embodiment of the present disclosure;
FIG. 4 is a first schematic structural diagram of an ultrasonic ore pulp concentration online detector in an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram II of an ultrasonic online pulp concentration detector in the embodiment of the present disclosure;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5; and the number of the first and second groups,
fig. 8 is a schematic composition diagram of an intelligent control terminal in the embodiment of the present disclosure.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
It should be noted that, in the case of no conflict, the features in the following embodiments and examples may be combined with each other; moreover, all other embodiments that can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort fall within the scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
Referring to fig. 1, an embodiment of the present disclosure discloses an ultrasonic pulp concentration online detector, which includes: the ultrasonic detector comprises a detector body, an ultrasonic transmitting transducer, an ultrasonic receiving transducer, a temperature sensor, a signal processor, a controller and a power supply; wherein:
the detector body is provided with a connecting component which is used for mounting the detector body on a pipeline to be detected;
the ultrasonic transmitting transducer and the ultrasonic receiving transducer are symmetrically arranged on the detector body, and the ultrasonic transmitting transducer is used for transmitting an ultrasonic signal with fixed frequency to a pipeline to be detected; the ultrasonic receiving transducer is used for receiving the attenuated ultrasonic signals;
the temperature sensor is used for measuring the temperature of ore pulp in the pipeline to be measured; the controller is connected with the power supply and is used for controlling the ultrasonic transmitting transducer, the ultrasonic receiving transducer, the temperature sensor and the signal processor;
the signal processor is used for processing the ultrasonic signal and the ore pulp temperature; and the temperature compensation device is used for calculating the attenuation coefficient of the ultrasonic wave according to the emission intensity of the ultrasonic wave and the intensity of the received ultrasonic wave signal, performing temperature compensation according to the relation between the preset temperature and the attenuation coefficient, and further obtaining the concentration measurement value of the ore pulp in the pipeline to be measured according to the relation between the preset attenuation coefficient and the ore pulp concentration.
In this embodiment, the characteristic that the ultrasonic wave encounters the suspended particles to generate scattering attenuation when propagating in the slurry is utilized, and the magnitude of the attenuation of the ultrasonic wave is not only related to the physical properties of the particles, but also related to the concentration of the particles. Through a great deal of research of the inventor, the relation between the attenuation coefficient of the ultrasonic wave and the concentration value of the ore pulp is calibrated. Therefore, the attenuation coefficient of the ultrasonic wave in the ore pulp is obtained by utilizing the signal attenuation before and after the ultrasonic wave passes through the ore pulp, the temperature compensation can be carried out by measuring the temperature according to the relation between the preset calibrated temperature and the attenuation coefficient, and then the corresponding ore pulp concentration value is obtained by utilizing the relation (calibration curve) between different concentrations and the attenuation coefficient.
Therefore, the ultrasonic online ore pulp concentration detector of the embodiment has the advantages of simple structure, low price, strong anti-interference performance and convenient use, can obtain a high-precision ore pulp concentration measurement value, and is very suitable for detecting the concentration of a solid phase in a solid-liquid two-phase flow. The ultrasonic ore pulp concentration detector of the embodiment solves the actual problem of online ore pulp concentration detection, and provides a choice or reference for solving similar problems. In addition, the ultrasonic wave can not bring noise pollution, is harmless to human bodies, and is very suitable for measuring the concentration of the ore pulp.
As an alternative implementation, the relationship α (T) between the attenuation coefficient α and the temperature T may be expressed by the following curve:
α＝44.05+0.00201T1.9。
as an alternative implementation, the relation α ═ α (β) between the attenuation coefficient α and the pulp concentration β can be expressed by the following curve:
α＝41.4+2.457×10-4β3.193。
as an alternative implementation, the relation between the pulp concentration and the attenuation coefficient α can be expressed by the following curve relation: beta is 9.01 (alpha-40.19)0.469。
Thus, after the attenuation coefficient α is measured, the concentration β can be calculated using the above equation.
As shown in fig. 2, as an optional implementation manner, the ultrasonic online detector for pulp concentration may further include a communication component, where the communication component is disposed inside the detector body, and is connected to the controller, so as to implement automatic control of detection and/or output a concentration measurement value.
In an alternative embodiment, the communication component may further comprise: and the serial communication circuit is used for outputting the digital signal of the concentration measurement value.
In an alternative embodiment, the communication component may further comprise: and the current output circuit is used for outputting the analog signal of the concentration measured value.
In an alternative embodiment, the communication component may further comprise: and the relay output circuit is used for realizing the automatic control of the controller.
As shown in fig. 2, as an optional implementation manner, the ultrasonic pulp concentration online detector may further include: the input and output assembly is arranged on the detector body, is connected with the controller and is used for inputting an operation instruction and/or performing operation processing on data output by the input and output assembly; and for displaying the concentration measurements and associated measurement parameters.
As an optional implementation manner, in the above embodiment, the input/output component includes an input/output circuit and an operation reading panel; the input and output circuit is connected with the controller and the operation reading panel. The operation reading panel is arranged on the front cover plate of the detector body and used for displaying data and operating the system.
In an optional embodiment, the operation reading panel may be further configured with a display screen, and the display screen is a touch display screen; the display screen is connected with the input and output circuit and is used for password setting, unit setting, range setting, and selection of a calibration mode, ultrasonic frequency and waveform calibration.
In another alternative embodiment, the operation reading panel can be further configured with a display screen and operation keys, wherein the operation keys comprise up, down, left and right four direction keys and an affirmation and return instruction key for password setting, unit setting, range setting and for selecting calibration mode and ultrasonic frequency and waveform calibration.
As an alternative implementation manner, in the above embodiment, the signal processor may further include a filter circuit, an amplifying circuit, and a temperature measuring circuit. The controller, the filter circuit, the amplifying circuit, the temperature measuring circuit, the serial communication circuit, the current output circuit, the relay output circuit and the input and output circuit are integrated on the PCB. Referring to fig. 3, the controller is connected to the filter circuit, the amplifier circuit, the temperature measuring circuit, the serial communication circuit, the current output circuit, the relay output circuit, and the input/output circuit, respectively.
Optionally, the PCB may be a double-sided board with a size of 100 × 1.6mm, the board is an FR-4 board, the copper thickness is 1OZ, the solder resist paint is green in color, white characters and symbols are printed to mark the positions of the parts on the board, the via hole processing mode is via hole oil covering, the tin spraying process is lead-free tin spraying, and the packaging mode includes two types of insertion and sticking.
As an optional implementation manner, in the above embodiment, the PCB is accommodated in the circuit chamber formed at both sides of the detector body; a wire through hole is arranged between the circuit chambers, and a detachable side cover plate is arranged at the opening of the circuit chamber.
As an alternative implementation, in the above embodiment, the temperature sensor is disposed on the housing of the ultrasonic transmitting transducer or the ultrasonic receiving transducer. The ultrasonic transducer is provided with the temperature sensor, so that the temperature and the concentration can be measured simultaneously, and the working efficiency is greatly improved.
As an alternative implementation, in the above embodiment, the amplifying circuit employs bipolar signal amplification. When the ultrasonic ore pulp concentration detector amplifies signals, bipolar signals are adopted for amplification. The amplitudes of the positive and negative levels of the bipolar signal are equal and the polarities are opposite, so that no direct current component exists when equal probabilities of '1' and '0' occur, transmission in a channel is facilitated, and the decision level of the signal recovered at a receiving end is zero, so that the signal is not influenced by channel characteristic change and has strong anti-interference capability.
As an alternative implementation, in the above embodiment, the ultrasonic transmitting transducer uses a direct digital frequency synthesizer to synthesize the signal source to transmit the ultrasonic wave. In this embodiment, a Direct Digital Synthesizer (DDS) is adopted, and compared with an analog Direct synthesis method and a pll frequency synthesis method, this embodiment has a wide application range, high resolution, and excellent performance. Particularly, the DDS frequency synthesizer is adopted to synthesize the signal source, so that the signal source is more stable, the frequency drift is avoided, and the measurement precision is relatively improved.
As an optional implementation manner, in the above embodiment, the ultrasonic transmitting transducer and the ultrasonic receiving transducer are installed in a direct-projection manner and are fixedly connected to the detector body. Sealing rings are arranged between the ultrasonic transmitting transducer, the ultrasonic receiving transducer and the detector body. In the embodiment, the direct-injection installation method is adopted, the transmitting signals and the receiving signals cannot interfere with each other, the transmitting transducer and the receiving transducer can be independently debugged and improved, the power requirement is low, and the precision is high.
As an optional implementation manner, in the above embodiment, a distance between the transmitting surface of the ultrasonic transmitting transducer and the receiving surface of the ultrasonic receiving transducer is the same as the diameter of the pipe to be measured, and a distance between the transmitting surfaces of the two transducers is the same as the diameter of the through-flow pipe.
In the embodiment, ultrasonic transducer directly inlays on the detector body, can guarantee that the centering nature is good, prevents that the ultrasonic wave from appearing dispersing and leading to energy reduction and influence actual measurement's accuracy nature. Meanwhile, the concentration signal can also be led out from the detector for remote display or control.
As an optional implementation manner, in the above embodiment, the connection assembly is a connection flange, and the detector body is horizontally installed on the pipeline to be detected through the connection flange when in operation; when the ore pulp flow velocity in the pipeline to be detected is too low, the detector body is vertically installed.
The ultrasonic pulp concentration on-line detector disclosed in the above embodiment is further described with reference to the exemplary embodiments shown in fig. 4 to 7:
in this embodiment, ultrasonic wave ore pulp concentration on-line measuring appearance is applicable to the two-stream solid phase concentration on-line measuring of solid-liquid in the closed pipeline, and the structural component mainly includes: the ultrasonic wave transmitting transducer, the ultrasonic wave receiving transducer, the transducer driving circuit, the filter circuit, the amplifying circuit, the input and output circuit, the temperature measuring circuit, the control system, the relay output circuit, the current output circuit and the like.
Under the control of the ultrasonic transmitting circuit, the ultrasonic transmitting transducer emits sound waves, the sound waves are transmitted in ore pulp and received by the ultrasonic receiving transducer, and received sound wave signals are sent to the control system for processing. The control system is also respectively connected with the temperature measuring circuit, the serial communication circuit, the current output circuit, the input and output circuit and the relay control circuit. The control system can calculate the attenuation coefficient of the ultrasonic wave by comparing the transmitting intensity of the transmitting transducer with the intensity of the signal received by the receiving transducer, and then carry out temperature compensation according to the temperature measured by the temperature measuring circuit, so that the concentration value of the ore pulp can be obtained according to the relation between the concentration value and the attenuation coefficient.
As shown in fig. 4 to 7, the mechanical structure of the ultrasonic online pulp concentration detector mainly includes: the ultrasonic testing device comprises a connecting flange 1, a body 2, an operation reading panel 3, a side cover plate 4, an ultrasonic transmitting transducer 5, a sealing ring 6, a front cover plate 7, an ultrasonic receiving transducer 8, an integrated detection control circuit PCB 9 and the like. The liquid crystal screen and the operation keys are arranged outside the front cover plate 7 and used for displaying data and operating the system, such as basic operations of selecting a calibration mode, selecting ultrasonic frequency and waveform, calibrating and the like. The key is mainly composed of four direction keys, namely an upper direction key, a lower direction key, a left direction key, a right direction key, a confirmation key and a return command key, and is mainly used for setting some settings, such as password setting, unit setting, range setting and the like.
Fig. 6 shows a view a-a of fig. 4. The transmitting transducer 5 is fixed on the body 2 by a screw, and a sealing ring 6 is arranged between the transmitting transducer and the body 2; the receiving transducers 9 are arranged at the symmetrical positions of the transmitting transducers 5, the distance between the transmitting surfaces of the two transducers is the same as the diameter of the through-flow pipeline, and the diameters of the sound-producing and receiving surfaces of the transducers are also the same as the diameter of the pipeline. Circuit elements 9 such as a controller and the like are arranged in the circuit chambers at two sides of the body 2, and a wire passing through hole is arranged between the two chambers. The opening of the circuit chamber is provided with a detachable side cover plate 4.
The ultrasonic ore pulp concentration on-line detector mainly comprises a single-chip microcomputer control system, an ultrasonic transmitting circuit, a filter circuit, an amplifying circuit, an input/output circuit, a temperature measuring circuit, a control system, a relay output circuit and an ultrasonic transducer. The principle is as follows: under the control of the control system, the transmitting circuit controls the ultrasonic transducer to transmit ultrasonic waves with fixed frequency, the ultrasonic waves are attenuated when passing through ore pulp, and then the ultrasonic receiving transducer receives signals. The signal is sent to a control system after being filtered and amplified, and a specific signal amplitude is obtained after sampling. Meanwhile, the temperature measuring circuit measures the temperature of the actual ore pulp, then the control system carries out temperature compensation according to the relation between the temperature and the attenuation coefficient, and finally the input and output circuit displays the concentration measured value through the display screen according to the relation between the attenuation coefficient and the ore pulp concentration. The serial communication circuit outputs a digital signal of the ore pulp concentration, the current signal output circuit outputs an analog signal of the ore pulp concentration, and the relay output circuit meets the automatic control requirement of the circuit.
Correspondingly, referring to fig. 8, the present disclosure further discloses an intelligent control terminal interacting with the ultrasonic pulp concentration online detector disclosed in any of the above embodiments, the intelligent control terminal includes: a communication device, a control system and a display device; wherein:
the communication device is used for receiving the concentration measured value detected by the ultrasonic ore pulp concentration online detector disclosed by any one of the embodiments. Optionally, the communication device can also be used for sending a working instruction to the ultrasonic ore pulp concentration online detector.
The control system is used for controlling the opening degree of the flocculant valve according to the concentration measurement value so as to adaptively adjust the flow of the flocculant solution based on the change of the pulp concentration.
The display device is used for displaying the output data of the ultrasonic online detector for the pulp concentration and implementing the change of the flow of the flocculant solution along with the pulp concentration.
The intelligent control terminal of this embodiment obtains current ore pulp concentration value through the online detector of ultrasonic wave ore pulp concentration to confirm current required flocculating agent flow according to the ore pulp concentration value, according to this, the degree of opening and shutting of control flocculating agent valve makes flocculating agent solution flow can carry out the adaptability adjustment according to the ore pulp concentration change.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. An ultrasonic online pulp concentration detector is characterized by comprising: the ultrasonic detector comprises a detector body, an ultrasonic transmitting transducer, an ultrasonic receiving transducer, a temperature sensor, a signal processor, a controller and a power supply; wherein:
the detector body is provided with a connecting component, and the connecting component is used for mounting the detector body on a pipeline to be detected;
the ultrasonic transmitting transducer and the ultrasonic receiving transducer are symmetrically arranged on the detector body, and the ultrasonic transmitting transducer is used for transmitting an ultrasonic signal with fixed frequency to the pipeline to be detected; the ultrasonic receiving transducer is used for receiving attenuated ultrasonic signals;
the temperature sensor is used for measuring the temperature of ore pulp in the pipeline to be measured; the controller is connected with the power supply and is used for controlling the ultrasonic transmitting transducer, the ultrasonic receiving transducer, the temperature sensor and the signal processor;
the signal processor is used for processing the ultrasonic signal and the pulp temperature; and the temperature compensation device is used for calculating the attenuation coefficient of the ultrasonic wave according to the emission intensity of the ultrasonic wave and the intensity of the received ultrasonic wave signal, performing temperature compensation according to the relation between the preset temperature and the attenuation coefficient, and further obtaining the concentration measurement value of the ore pulp in the pipeline to be measured according to the relation between the preset attenuation coefficient and the ore pulp concentration.
2. The ultrasonic online pulp concentration detector according to claim 1, further comprising:
the communication assembly is arranged in the detector body, is connected with the controller and is used for realizing automatic control of detection and/or outputting the concentration measurement value; and/or the presence of a gas in the gas,
the input and output assembly is arranged on the detector body, is connected with the controller and is used for inputting an operation instruction and/or performing operation processing on data output by the input and output assembly; and for displaying the concentration measurements and associated measurement parameters.
3. The ultrasonic online pulp concentration detector of claim 2, wherein the communication assembly further comprises:
a serial communication circuit for outputting a digital signal of the concentration measurement value;
the current output circuit is used for outputting an analog signal of the concentration measured value; and/or the presence of a gas in the gas,
and the relay output circuit is used for realizing the automatic control of the controller.
4. The ultrasonic online ore pulp concentration detector according to claim 2 or 3, characterized in that:
the input and output assembly comprises an input and output circuit and an operation reading panel; the input and output circuit is connected with the controller and the operation reading panel;
the operation reading panel is arranged on a front cover plate of the detector body and used for displaying data and operating a system.
5. The ultrasonic online pulp concentration detector according to claim 4, characterized in that:
the operation reading panel is further provided with a display screen which is a touch display screen; the display screen is connected with the input and output circuit and is used for password setting, unit setting, range setting, and selection of a calibration mode, ultrasonic frequency and waveform calibration; alternatively, the first and second electrodes may be,
the operation reading panel is further provided with a display screen and operation keys, wherein the operation keys comprise an upper direction key, a lower direction key, a left direction key, a right direction key, a confirmation instruction key and a return instruction key, and are used for password setting, unit setting, range setting, and selection of a calibration mode, ultrasonic frequency and waveform calibration.
6. The ultrasonic online pulp concentration detector according to claim 4, characterized in that:
the signal processor further comprises a filter circuit, an amplifying circuit and a temperature measuring circuit; the controller, the filter circuit, the amplifying circuit, the temperature measuring circuit, the serial communication circuit, the current output circuit, the relay output circuit and the input and output circuit are integrally arranged on a PCB (printed circuit board);
the controller is connected with the filter circuit, the amplifying circuit, the temperature measuring circuit, the serial communication circuit, the current output circuit, the relay output circuit and the input and output circuit respectively.
7. The ultrasonic online pulp concentration detector according to claim 6, characterized in that:
the PCB is accommodated in a circuit chamber formed on two sides of the detector body; a wire through hole is formed between the circuit chambers, and a detachable side cover plate is arranged at the opening of the circuit chamber; and/or the presence of a gas in the gas,
the temperature sensor is arranged on a shell on the ultrasonic transmitting transducer or the ultrasonic receiving transducer; and/or the amplifying circuit adopts bipolar signal amplification.
8. The ultrasonic online ore pulp concentration detector of claim 1, characterized in that:
the ultrasonic transmitting transducer and the ultrasonic receiving transducer are installed in a direct-injection mode and are fixedly connected to the detector body; sealing rings are arranged among the ultrasonic transmitting transducer, the ultrasonic receiving transducer and the detector body; and/or the presence of a gas in the gas,
the connecting assembly is a connecting flange, and the detector body is horizontally arranged on the pipeline to be detected through the connecting flange when in work; when the ore pulp flow velocity in the pipeline to be detected is too low, the detector body is vertically installed.
9. The ultrasonic online ore pulp concentration detector of claim 1, characterized in that:
the distance between the transmitting surface of the ultrasonic transmitting transducer and the receiving surface of the ultrasonic receiving transducer is the same as the diameter of the pipeline to be measured, and the distance between the transmitting surfaces of the two transducers is the same as the diameter of the through-flow pipeline; the ultrasonic transmitting transducer adopts a direct digital frequency synthesizer to synthesize a signal source to transmit ultrasonic waves; and/or the presence of a gas in the gas,
the relation between the ore pulp concentration beta and the attenuation coefficient alpha is as follows: beta is 9.01 (alpha-40.19)0.469。
10. An intelligent control terminal, comprising:
communication means for receiving the concentration measurement value detected by the ultrasonic pulp concentration online detector according to any one of claims 1 to 9; and/or the ultrasonic pulp concentration online detector is used for sending a working instruction to the ultrasonic pulp concentration online detector;
the control system is used for controlling the opening degree of a flocculant valve according to the concentration measured value so as to adaptively adjust the flow of the flocculant solution based on the change of the pulp concentration;
and the display device is used for displaying the output data of the ultrasonic online ore pulp concentration detector and implementing the change of the flow of the flocculant solution along with the ore pulp concentration.
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