CN115815112A - Control management system for coal screening device - Google Patents
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Abstract
The invention discloses a control management system for a coal screening device, which relates to the technical field of coal screening devices and aims to overcome the defects that the particle size of coal is greatly deviated during screening due to a deformed screen sheet and a loose bearing, so that the particle size of the coal is not uniformly screened.
Description
Technical Field
The invention relates to the technical field of coal screening devices, in particular to a control management system for a coal screening device.
Background
The coal mainly comprises elements such as carbon, hydrogen, oxygen, nitrogen, sulfur, phosphorus and the like, the sum of the carbon, the hydrogen and the oxygen accounts for more than 95 percent of organic matters, the coal is a very important energy source and is also an important raw material in metallurgy and chemical industry, and the coal is classified into lignite, bituminous coal, anthracite and semi-anthracite. At present, the coal screening equipment in China mainly uses a composite sine screen, and the product has the greatest characteristic that the screening principle is not vibration screening but screening by using the disturbance principle of sine waves, so that the defects of the vibration screen are overcome. The screening device has the characteristics of unique structure, high processing capacity, high screening efficiency, reliability, durability, convenience in maintenance, low noise and the like.
At present, mineral processing equipment in China develops rapidly, and partial screening theories reach the advanced level in the world, but most of the mineral processing equipment is improved on the basis of equipment, and the operation monitoring system of the mineral processing equipment has more defects;
1. the existing monitoring system is mainly used for monitoring the equipment in the operation process, the equipment cannot be detected before operation, the distance between adjacent sieve sheets cannot be monitored, the sieve sheets can deform after being extruded for a long time, and the deformed sieve sheets influence the particle size of the screened coal material, so that the non-uniform phenomenon of the screened particle size of the coal material is caused;
2. after equipment runs for a long time, not hard up phenomenon can appear in the bearing, and not only the degree of wear of equipment is increaseed to not hard up bearing, and not hard up bearing also can influence the interval of adjacent sieve piece simultaneously to there is great error in the screening particle diameter that leads to the coal charge.
Disclosure of Invention
The invention aims to solve the defect that the particle size of coal is not uniformly screened due to large deviation caused by deformed screen pieces and loose bearings during screening, and provides a control and management system for a coal screening device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control management system for a coal screening device comprises a sieve sheet standby monitoring module, a bearing standby monitoring module, a control module, an information registration module and a remote monitoring terminal;
the screen sheet standby monitoring module is used for monitoring the distance between two adjacent sets of screen sheets in the standby state of the coal screening device, calibrating the distance as the real-time distance of the screen sheets, carrying out differential analysis on the real-time distance of the screen sheets and the rated distance of the screen sheets to obtain a screen sheet deformation difference value, and matching the screen sheet deformation difference value with the screen sheet deformation range; if the matching results of the two are consistent, generating a corresponding screen sheet alarm signal and screen sheet bending damage alarm information or screen sheet thickness extension deformation alarm information and feeding back the alarm information to the control module; wherein, the deformation range of the sieve sheet comprises five intervals of E1, E2, E3, E4 and E5; wherein E1 belongs to [ -0.5cm,0.5cm ], E2 belongs to (0.5cm, 1cm), E3 belongs to (1cm, A1), E4 belongs to [ -1cm, -0.5 cm), E5 belongs to (A2, -1), A1 is the distance length of two adjacent bearings, and A2 is the opposite value of the rated distance; the sieve sheet alarm signaling comprises a sieve sheet alarm instruction A, a sieve sheet alarm instruction B and a sieve sheet alarm instruction C;
when the screen piece deformation difference value belongs to the screen piece deformation range E1, generating a screen piece alarm instruction A;
when the screen piece deformation difference value belongs to the screen piece deformation range E2, a screen piece alarm instruction B and screen piece bending damage alarm information are generated;
when the screen piece deformation difference value belongs to a screen piece deformation range E3, a screen piece alarm instruction C and screen piece bending damage alarm information are generated;
when the screen sheet deformation difference value belongs to the screen sheet deformation range E4, generating a screen sheet alarm instruction B and screen sheet thickness extension deformation alarm information;
when the screen sheet deformation difference value belongs to the screen sheet deformation range E5, generating a screen sheet alarm instruction C and screen sheet thickness extension deformation alarm information;
the bearing standby monitoring module is used for monitoring the position information of the bearing in a standby state and calibrating the position information as a standby detection position, and the specific monitoring process is as follows: matching the standby detection position with the standby fixing position, and if the matching result of the standby detection position and the standby fixing position is inconsistent, generating a position alarm signaling and feeding the position alarm signaling back to the control module;
the specific alarm processing control module is used for receiving the screen sheet alarm signaling and the position alarm signaling and carrying out alarm processing, and the operation is as follows:
s1: when a screening alarm instruction A is received, the control module controls the primary warning lamp to emit a green light beam;
s2: when a screening alarm instruction B is received, the control module controls the secondary warning lamp to flash blue light beams, wherein the secondary warning lamp flashes every 2 seconds;
s3: when a screening alarm instruction C is received, the control module controls the three-level warning lamp to flash red light beams, wherein the three-level warning lamp flashes every 1 second; the primary warning lamp, the secondary warning lamp and the tertiary warning lamp are all arranged on the coal screening device;
when a position alarm signaling is received, the control module controls the alarm equipment to send out a buzzing sound, meanwhile, the control module establishes a cross coordinate system by taking a standby fixed position of the bearing as an origin, divides the cross coordinate system into four quadrants, connects the standby fixed position with a standby detection position, marks the quadrant where the connecting line is positioned as a deflection direction, calculates an included angle between the connecting line and an X axis, marks the included angle as a deflection angle, marks the deflection direction and the deflection angle as bearing position deviation information, and transmits the bearing position deviation information to the information registration module for storage; wherein, the alarm device is arranged on the coal screening device;
the remote monitoring terminal is used for calling the stored data in the information registration module and sending maintenance inquiry information to the mobile terminal of the screening and bearing management department; the storage data comprises screen piece bending damage alarm information, screen piece thickness extension deformation alarm information and bearing position deviation information; the maintenance inquiry information comprises personal information of maintenance personnel, personnel hearing values and personnel arrival time points;
the specific operation process is as follows:
a maintenance worker logs in maintenance worker information through a mobile terminal and sets a arrival time point of the maintenance worker, and a control module releases a screen sheet alarm signaling and a position alarm signaling to enter a standby mode; the remote detection terminal calculates the estimated time length and scales the time length of the standby mode as the standby time length; when the standby time length exceeds the expected time length, the control module executes the screening alarm signaling and the position alarm signaling again and sends maintenance emergency information to the mobile terminal.
Preferably, the lubricating oil level monitoring device further comprises a lubricating oil level monitoring module;
the lubricating oil liquid level monitoring module is used for monitoring the real-time liquid level of the lubricating oil in the running state of the coal screening device, performing difference analysis on the real-time liquid level of the lubricating oil and a lowest threshold value to obtain a lubricating oil liquid level difference, and if the lubricating oil liquid level difference is a negative value, generating an emergency liquid supplementing alarm signaling; if the lubricating oil level difference is a positive value, matching the lubricating oil level difference with a defined threshold value, and if the matching result of the lubricating oil level difference and the defined threshold value is consistent, generating a to-be-supplemented alarm signaling;
the remote monitoring terminal is also used for receiving an emergency liquid supplementing alarm signaling and a to-be-supplemented alarm signaling and carrying out alarm processing; the specific alarm processing process comprises the following steps:
the remote monitoring terminal controls an alarm device of the coal screening device to make a whistle; the whistle has two decibel levels; wherein, the two decibel levels are divided into a high decibel level and a low decibel level; if the remote monitoring terminal receives the emergency fluid infusion alarm signaling, the control module controls the alarm equipment to emit whistling sounds with high decibel levels corresponding to the sound intensity; if the remote monitoring terminal receives the alarm signaling to be supplemented with liquid, the control module controls the alarm equipment to send out low-decibel whistle; after the staff injects lubricating liquid, the decibel of whistle sound reduces gradually along with the positive value increase of lubricating oil liquid level difference.
Preferably, the remote detection terminal is further configured to obtain a hearing ability Gb of the person, and analyze the hearing ability of the person, where the specific analysis process is:
setting five decibel drop levels, wherein each decibel drop level corresponds to one hearing interval value and a drop coefficient;
when the hearing ability value of the person belongs to the hearing interval value, marking the reduction coefficient of the hearing interval value of the person corresponding to the decibel reduction level as an execution coefficient ZX; collecting the lubricating oil level difference when a worker injects lubricating oil; dividing the lubricating oil liquid level difference into five liquid supplementing grades according to the liquid level height, and calibrating the liquid supplementing grades as Rk; the five fluid infusion grades are divided into a first fluid infusion grade R1, a second fluid infusion grade R2, a third fluid infusion grade R3, a fourth fluid infusion grade R4 and a fifth fluid infusion grade R5; each fluid infusion grade corresponds to a compensation and reduction decibel coefficient TRk; the compensation reduction decibel coefficient is a reduction decibel value of the alarm decibel corresponding to the liquid level difference height of the liquid level lubricating oil, and the higher the liquid level difference height of the lubricating oil is, the larger the compensation reduction decibel coefficient is;
the remote detection terminal extracts the numerical values of the execution coefficient and the lubricating oil liquid level difference and sets the sound sizes corresponding to the high decibel level and the low decibel level to be Fb1 and Fb2; substituting Fb1 or Fb2 into a formula DF = Fbj-ZX × ay1-TRk × ay2 to obtain the real-time alarm decibel DF of the alarm device; wherein, ay1 is an execution coefficient preset proportionality coefficient, and ay2 is a preset proportionality coefficient of the lubricating oil liquid level difference;
and alarming by the alarm equipment according to the sound corresponding to the real-time alarm decibel DF, and stopping alarming when the lubricating oil level difference is equal to the maximum value.
Preferably, the device further comprises a bearing operation monitoring module;
the bearing operation monitoring module is used for monitoring the bearing temperature, the bearing rotating speed and the bearing operation position when the coal screening device operates, and the concrete monitoring steps are as follows:
reading n bearing temperatures of the coal screening device in a period of operation, calculating the average value of the n bearing temperatures, calibrating the average value as the average value of the bearing operation temperatures, substituting the n bearing temperatures into a formula
Obtaining the average value Kp of the bearing running temperature, matching the average value Kp with a preset economic running temperature range KB, and if the average value Kp of the bearing running temperature is not within the preset economic running temperature range KB
Generating a shutdown instruction and a self-detection signaling, and sending the shutdown instruction and the self-detection signaling to a control module, wherein the control module controls the coal screening device to enter a shutdown state;
the self-detection instruction comprises the following specific implementation steps: the control module detects whether the control module generates an emergency fluid infusion alarm signaling, and if the control module generates the emergency fluid infusion alarm signaling, bearing operation blocking information is generated and sent to the remote control terminal for displaying; if the control module does not generate the emergency liquid supplementing alarm signaling, x groups of bearing rotating speeds of the bearing within a period of time are called, the average value of the x groups of bearing rotating speeds is calculated and calibrated as the average value of the bearing rotating speeds, and the x groups of bearing rotating speeds are substituted into a formula
And obtaining a bearing rotation speed mean value Rx, comparing the bearing rotation speed mean value Rx with the economic operation rotation speed, and if the bearing rotation speed mean value is smaller than the economic operation rotation speed, generating bearing operation fault information and transmitting the information to a remote monitoring terminal for displaying.
Preferably, the control module establishes a dynamic rectangular coordinate system of the bearing motion track by taking the standby detection position of the bearing as an origin, the running time as a horizontal coordinate and the running position of the bearing as a vertical coordinate, reads v bearing running positions running in unit running time, connects the standby detection position of the bearing with the v bearing running positions, calculates the slope of each connection line and calibrates the slope as a change slope;
establishing a bearing offset track dynamic rectangular coordinate system by taking unit time as a horizontal coordinate and taking a change slope as a vertical coordinate; setting a first reference line and a second reference line; removing a highest value and a lowest value in the v change slopes, and connecting v-2 change slopes by using a straight line to obtain a fluctuation broken line;
marking the change slope connecting point exceeding the first reference line and the second reference line as the fluctuation point, accumulating the number of the fluctuation points, and if the number of the fluctuation points is larger than or equal to the fluctuation point
And in the process, judging that the fluctuation amplitude of the fluctuation fold line is large, generating bearing operation early warning information, and transmitting the information to a remote monitoring terminal for storage.
The motor operation monitoring module is used for monitoring the operation temperature of the motor, and the specific monitoring steps are as follows:
the method comprises the steps of reading the operation temperatures of H motors within a period of time, carrying out differential analysis on the operation temperatures and the economic operation temperatures of the motors to obtain motor operation temperature differences, marking the motor operation temperatures as Lf, marking the economic operation temperatures of the motors as Lg, substituting a formula Le = Lf-Lg to obtain motor operation temperature differences Le, comparing the motor operation temperature differences Le with a temperature difference threshold value, if the motor operation temperature differences are larger than the temperature difference threshold value, marking the motor operation temperature differences as positive signals, if the motor operation temperature differences are smaller than or equal to the temperature difference threshold value, marking the motor operation temperature differences as negative signals, if the number of the positive signals is larger than that of the negative signals, generating power-off instructions and motor load alarm signals, transmitting the power-off instructions and the motor load alarm signals to a remote monitoring terminal, and carrying out power-off processing on the motors.
Preferably, the system also comprises a mineral flow monitoring module; the mineral flow monitoring module is used for acquiring the instantaneous flow of the belt in unit time; the motor is provided with two grade modes, wherein the two grade modes are divided into a high-speed operation mode and a low-speed operation mode;
the mineral flow monitoring module calls instantaneous flow, compares the instantaneous flow with rated flow and analyzes, if the instantaneous flow exceeds the rated flow, an acceleration instruction is generated, and at the moment, the control module drives the motor to enter a high-speed operation mode; and if the instantaneous flow is lower than the rated flow, generating a speed reduction instruction, and driving the motor to enter a low-speed running mode by the control module.
Compared with the prior art, the invention has the beneficial effects that:
1. through the sieve piece standby monitoring module who sets up, equipment monitors the interval of adjacent two sets of sieve pieces under standby state, the sieve piece is when warping, produce corresponding sieve piece warning signaling and sieve piece alarm information, different degree that the alarm mode through alarm equipment difference warp the sieve piece is fed back, remind maintenance personal in time to overhaul, avoid equipment when moving, because sieve piece warp the screening particle diameter that leads to the coal charge uneven phenomenon appears, through the bearing standby monitoring module who sets up, detect the position of the bearing under the equipment standby state, the bearing of avoiding the skew leads to the interval change of sieve piece, the screening that leads to the coal charge has great piece deviation, detect simultaneously whether not hard up phenomenon appears in the bearing, and angle and the position that can accurate measurement bearing skew, the maintenance personal of being convenient for accomplishes maintenance work fast, thereby prevent that not hard up bearing from causing the wearing and tearing to equipment, reduce the life of equipment.
2. Through the liquid level of the lubricating oil liquid level monitoring module real-time supervision equipment lubricating oil that sets up, when the lubricating oil liquid level is lower, equipment automatic alarm, remind the staff in time to mend liquid, prevent that the bearing from leading to rotating the jam because of lacking oil, simultaneously alarm device's warning decibel is adjusted according to maintenance personal's hearing condition, along with the rising of oil tank liquid level, the warning decibel constantly reduces, alarm rate is fast, and report to the police accurately, avoid the lubricating oil liquid level to hang down excessively, increase the degree of wear between bearing and the equipment, lead to motor load too big, the phenomenon of harm or burning appears.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is an analysis of the range of screen deformation by the control module of the present invention;
FIG. 3 is an analysis diagram of a dynamic rectangular coordinate system of the bearing offset trajectory according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1, a control management system for a coal screening device comprises a screen sheet standby monitoring module, a bearing standby monitoring module, a control module, an information registration module, a remote monitoring terminal and an operation monitoring module;
the screen piece standby monitoring module is used for monitoring the distance between two adjacent sets of screen pieces in a standby state of the coal screening device, calibrating the distance as the real-time distance of the screen pieces, carrying out differential analysis on the real-time distance of the screen pieces and the rated distance of the screen pieces to obtain a screen piece deformation difference value, and matching the screen piece deformation difference value with a screen piece deformation range; if the matching results of the two are consistent, generating a corresponding screen sheet alarm signal and screen sheet bending damage alarm information or screen sheet thickness extension deformation alarm information and feeding back the alarm information to the control module; wherein, the deformation range of the sieve sheet comprises five intervals of E1, E2, E3, E4 and E5; wherein E1 belongs to [ -0.5cm,0.5cm ], E2 belongs to (0.5cm, 1cm), E3 belongs to (1cm, A1), E4 belongs to [ -1cm, -0.5 cm), E5 belongs to (A2, -1), A1 is the distance length of two adjacent bearings, and A2 is the opposite value of the rated distance; the sieve sheet alarm signaling comprises a sieve sheet alarm instruction A, a sieve sheet alarm instruction B and a sieve sheet alarm instruction C;
when the screen piece deformation difference value belongs to the screen piece deformation range E1, generating a screen piece alarm instruction A;
when the screen piece deformation difference value belongs to the screen piece deformation range E2, a screen piece alarm instruction B and screen piece bending damage alarm information are generated;
when the screen piece deformation difference value belongs to the screen piece deformation range E3, a screen piece alarm instruction C and screen piece bending damage alarm information are generated;
when the screen sheet deformation difference value belongs to the screen sheet deformation range E4, generating a screen sheet alarm instruction B and screen sheet thickness extension deformation alarm information;
when the screen sheet deformation difference value belongs to the screen sheet deformation range E5, generating a screen sheet alarm instruction C and screen sheet thickness extension deformation alarm information;
the bearing standby monitoring module is used for monitoring the position information of the bearing in a standby state and calibrating the position information as a standby detection position, and the specific monitoring process is as follows: matching the standby detection position with the standby fixing position, and if the matching results of the standby detection position and the standby fixing position are inconsistent, generating a position alarm signaling and feeding the position alarm signaling back to the control module;
the specific alarm processing control module is used for receiving the screen sheet alarm signaling and the position alarm signaling and carrying out alarm processing, and the operation is as follows:
s1: when a screening alarm instruction A is received, the control module controls the primary warning lamp to emit a green light beam;
s2: when a screening alarm instruction B is received, the control module controls the secondary warning lamp to flash blue light beams, wherein the secondary warning lamp flashes every 2 seconds;
s3: when a screening alarm instruction C is received, the control module controls the three-level warning lamp to flash red light beams, wherein the three-level warning lamp flashes every 1 second; the primary warning lamp, the secondary warning lamp and the tertiary warning lamp are all arranged on the coal screening device;
when a position alarm signaling is received, the control module controls the alarm equipment to send out a buzzing sound, meanwhile, the control module establishes a cross coordinate system by taking a standby fixed position of the bearing as an origin, divides the cross coordinate system into four quadrants, connects the standby fixed position with a standby detection position, marks the quadrant where the connecting line is positioned as a deflection direction, calculates an included angle between the connecting line and an X axis, marks the included angle as a deflection angle, marks the deflection direction and the deflection angle as bearing position deviation information, and transmits the bearing position deviation information to the information registration module for storage; wherein, the alarm device is arranged on the coal screening device;
the remote monitoring terminal is used for calling the stored data in the information registration module and sending maintenance inquiry information to the mobile terminal of the screening and bearing management department; the storage data comprises screen piece bending damage alarm information, screen piece thickness extension deformation alarm information and bearing position deviation information; the maintenance inquiry information comprises personal information of maintenance personnel, personnel hearing values and personnel arrival time points; the information registration module is used for registering and storing screen piece bending damage alarm information, screen piece thickness extension deformation alarm information, bearing position deviation information, maintenance personnel, personnel hearing values and personnel arrival time points;
the specific operation process is as follows:
a maintenance worker logs in maintenance worker information through a mobile terminal and sets a arrival time point of the maintenance worker, and a control module releases a screen sheet alarm signaling and a position alarm signaling to enter a standby mode; the remote detection terminal calculates the estimated time length and scales the time length of the standby mode as the standby time length; when the standby time length exceeds the expected time length, the control module executes the screening alarm signaling and the position alarm signaling again and sends maintenance emergency information to the mobile terminal.
The operation monitoring module comprises a lubricating oil liquid level monitoring module;
the lubricating oil liquid level monitoring module is used for monitoring the real-time liquid level of the lubricating oil in the running state of the coal screening device, performing difference analysis on the real-time liquid level of the lubricating oil and a lowest threshold value to obtain a lubricating oil liquid level difference, and if the lubricating oil liquid level difference is a negative value, generating an emergency liquid supplementing alarm signaling; if the lubricating oil level difference is a positive value, matching the lubricating oil level difference with a defined threshold value, and if the matching result of the lubricating oil level difference and the defined threshold value is consistent, generating a to-be-supplemented alarm signaling;
the remote monitoring terminal is also used for receiving an emergency liquid supplementing alarm signaling and a to-be-supplemented alarm signaling and carrying out alarm processing; the specific alarm processing process comprises the following steps:
the remote monitoring terminal controls an alarm device of the coal screening device to make a whistle; the whistle has two decibel levels; wherein, the two decibel levels are divided into a high decibel level and a low decibel level; if the remote monitoring terminal receives the emergency fluid infusion alarm signaling, the control module controls the alarm equipment to emit whistling sounds with high decibel levels corresponding to the sound intensity; if the remote monitoring terminal receives the alarm signaling to be supplemented with liquid, the control module controls the alarm equipment to send out low-decibel whistle; after the worker injects the lubricating liquid, the decibel of the whistle is gradually reduced along with the increase of the positive value of the lubricating liquid level difference.
The remote detection terminal is also used for acquiring a hearing ability value Gb of the person and analyzing the hearing ability value of the person, and the specific analysis process is as follows:
setting five decibel descending levels, wherein each decibel descending level corresponds to a hearing interval value and a descending coefficient;
when the hearing ability value of the person belongs to the hearing interval value, marking the reduction coefficient of the hearing interval value of the person corresponding to the decibel reduction level as an execution coefficient ZX; collecting the lubricating oil level difference when a worker injects lubricating liquid; dividing the lubricating oil liquid level difference into five liquid supplementing grades according to the liquid level height, and calibrating the liquid supplementing grades as Rk; the five fluid infusion grades are divided into a first fluid infusion grade R1, a second fluid infusion grade R2, a third fluid infusion grade R3, a fourth fluid infusion grade R4 and a fifth fluid infusion grade R5; each fluid infusion grade corresponds to a compensation and reduction decibel coefficient T Rk (ii) a The compensation reduction decibel coefficient is a reduction decibel value of the alarm decibel corresponding to the liquid level difference height of the liquid level lubricating oil, and the higher the liquid level difference height of the lubricating oil is, the larger the compensation reduction decibel coefficient is; t is R1 <T R2 <T R3 <T R4 <T R5 ；
The remote detection terminal extracts the numerical values of the execution coefficient and the lubricating oil liquid level difference and sets the sound sizes corresponding to the high decibel level and the low decibel level to be Fb1 and Fb2; substituting Fb1 or Fb2 into formula DF = Fbj-ZX × ay1-T Rk Obtaining real-time alarm decibel DF of the alarm equipment by multiplying ay 2; wherein, ay1 is an execution coefficient preset proportionality coefficient, and ay2 is a preset proportionality coefficient of the lubricating oil liquid level difference;
and alarming by the alarm equipment according to the sound corresponding to the real-time alarm decibel DF, and stopping alarming when the lubricating oil level difference is equal to the maximum value.
The hearing interval values of the persons are divided into four groups of Lp1, lp2, lp3 and Lp 4; wherein Lp1 belongs to (0, 25), lp2 belongs to (25, 40), lp3 belongs to (40, 55), lp4 belongs to (55, 70; fb1=100dB, fb2=80dB;
when the alarm device sounds a high decibel whistle,
if Gb belongs to Lp1, the corresponding execution coefficient is 15; if Gb belongs to Lp2, the corresponding execution coefficient is 12; if Gb belongs to Lp3, the corresponding execution coefficient is 9, and if Gb belongs to Lp4, the corresponding execution coefficient is 6;
when the alarm device sounds a low decibel whistle,
if Gb belongs to Lp1, the corresponding execution coefficient is 11; if Gb belongs to Lp2, the corresponding execution coefficient is 8; if Gb belongs to Lp3, the corresponding execution coefficient is 5; if Gb ∈ Lp4, the corresponding execution coefficient is 2.
The device also comprises a bearing operation monitoring module;
the bearing operation monitoring module is used for monitoring the bearing temperature, the bearing rotating speed and the bearing operation position when the coal screening device operates, and the concrete monitoring steps are as follows:
reading n bearing temperatures of the coal screening device in a period of operation, calculating the average value of the n bearing temperatures, calibrating the average value as the average value of the bearing operation temperatures, substituting the n bearing temperatures into a formula
Obtaining the average value Kp of the bearing running temperature, matching the average value Kp with a preset economic running temperature range KB, and if the average value Kp of the bearing running temperature is not within the preset economic running temperature range KB
Generating a shutdown instruction and a self-detection signaling, and sending the shutdown instruction and the self-detection signaling to a control module, wherein the control module controls the coal screening device to enter a shutdown state;
the self-detection instruction comprises the following specific implementation steps: the control module detects whether the control module generates an emergency fluid infusion alarm signaling, and if the control module generates the emergency fluid infusion alarm signaling, bearing operation blocking information is generated and sent to the remote control terminal for displaying; if the control module does not generate the emergency liquid supplementing alarm signaling, x groups of bearing rotating speeds of the bearing within a period of time are called, the average value of the x groups of bearing rotating speeds is calculated and calibrated as the average value of the bearing rotating speeds, and the x groups of bearing rotating speeds are substituted into a formula
And obtaining a bearing rotation speed mean value Rx, comparing the bearing rotation speed mean value Rx with the economic operation rotation speed, and if the bearing rotation speed mean value is smaller than the economic operation rotation speed, generating bearing operation fault information and transmitting the information to a remote monitoring terminal for displaying.
The control module establishes a bearing motion track dynamic rectangular coordinate system by taking a standby detection position of the bearing as an original point, operating time as a horizontal coordinate and a bearing operating position as a vertical coordinate, reads v bearing operating positions in operating unit time, connects the standby detection position of the bearing with the v bearing operating positions, calculates the slope of each connection line and calibrates the slope to be a change slope;
establishing a bearing offset track dynamic rectangular coordinate system by taking unit time as a horizontal coordinate and taking a change slope as a vertical coordinate; setting a first reference line and a second reference line; removing a highest value and a lowest value in the v change slopes, and connecting v-2 change slopes by using a straight line to obtain a fluctuation broken line;
marking the change slope connecting point exceeding the first reference line and the second reference line as the fluctuation point, accumulating the number of the fluctuation points, and if the number of the fluctuation points is larger than or equal to the fluctuation point
And judging that the fluctuation range of the fluctuation broken line is large, generating bearing operation early warning information, and transmitting the information to a remote monitoring terminal for storage.
The motor operation monitoring module is used for monitoring the operation temperature of the motor, and the specific monitoring steps are as follows:
reading the operating temperatures of H motors in a period of time, performing differential analysis on the operating temperatures and the economic operating temperatures of the motors to obtain the operating temperature difference of the motors, marking the operating temperature of the motors as Lf, marking the economic operating temperature of the motors as Lg, and substituting the operating temperature difference into a formula Le = Lf-L g And obtaining a motor operation temperature difference Le, comparing and analyzing the motor operation temperature difference Le with a temperature difference threshold, if the motor operation temperature difference is larger than the temperature difference threshold, marking the motor operation temperature difference as a positive signal, if the motor operation temperature difference is smaller than or equal to the temperature difference threshold, marking the motor operation temperature difference as a negative signal, if the number of the positive signals is larger than that of the negative signals, generating a power-off instruction and a motor load alarm signal, transmitting the power-off instruction and the motor load alarm signal to a remote monitoring terminal, and performing power-off processing on the motor.
The operation monitoring module also comprises a mineral flow monitoring module; the mineral flow monitoring module is used for acquiring the instantaneous flow of the belt in unit time; the motor is provided with two grade modes, wherein the two grade modes are divided into a high-speed operation mode and a low-speed operation mode;
the mineral flow monitoring module calls instantaneous flow, compares the instantaneous flow with rated flow and analyzes, if the instantaneous flow exceeds the rated flow, an acceleration instruction is generated, and at the moment, the control module drives the motor to enter a high-speed operation mode; and if the instantaneous flow is lower than the rated flow, generating a speed reduction instruction, and driving the motor to enter a low-speed running mode by the control module.
In the invention, when the device is in a standby state, a screen sheet standby detection module detects the real-time distance between the screen sheets at the outer ends of two adjacent groups of bearings, and performs differential analysis with a rated distance to judge the deformation condition of the screen sheets, and classifies the deformation condition into screen sheet bending damage or screen sheet thickness extension deformation, the deformation category and the deformation quantity of the screen sheets are sent to an information registration module for storage in an information mode, meanwhile, a corresponding screen sheet alarm signaling is generated and sent to a control module, the control module executes a corresponding screen sheet alarm instruction according to different screen sheet alarm signaling, in the process, a bearing standby monitoring module detects the position information of the bearings in the standby state of the device, a cross coordinate system is established by taking the fixed position of the bearings in the standby state of the device as an original point, then the deflection angle and the deflection direction of the bearing are measured according to the position of the standby detection position of the bearing, and the deflection angle and the deflection direction of the bearing are calibrated to be bearing position deflection information, then sending the information to an information registration module, sending inquiry information to a mobile terminal corresponding to a maintenance worker by a remote monitoring terminal while alarming, registering the maintenance worker, a time point of arrival of the personnel and a hearing value of the personnel by the maintenance worker, controlling the alarm equipment of a module control device to stop reporting and calculating the standby time length of the alarm equipment when the maintenance worker completes setting, controlling the alarm equipment to alarm again by the control module when the standby time length exceeds the preset time length, then sending maintenance urgent information to the mobile terminal of the maintenance worker, calling the numerical value of screen plate damage or screen plate thickness extension deformation and the angle and position of a bearing to be adjusted by the maintenance worker during maintenance, thereby facilitating the maintenance worker to complete maintenance operation quickly, detecting the device before operation, and avoiding reduction of coal screening precision caused by screen plate deformation or bearing position deviation, thereby causing the phenomenon of non-uniformity in coal screening; when the device is in operation, the lubricating oil liquid level monitoring module detects the real-time liquid level of lubricating oil, when the lubricating oil liquid level is too low, an emergency liquid supplementing alarm signaling and a to-be-supplemented alarm signaling are generated according to the lubricating oil liquid level difference, different liquid supplementing alarm signaling are generated, decibels of alarm equipment are different, corresponding execution coefficients are set according to the hearing values of personnel, along with the liquid supplementing level of the lubricating oil, the control module controls the real-time alarm decibels of the alarm equipment until the alarm equipment reaches the hearing value of the personnel of maintenance personnel, at the moment, the lubricating oil reaches the highest value, and meanwhile, the alarm equipment stops alarming; when the device runs, the bearing running monitoring module monitors the bearing temperature, the bearing rotating speed and the bearing running position when the device runs, when the bearing temperature is too high, whether the liquid level of lubricating oil is too low is detected, after the influence of the liquid level of the lubricating oil is eliminated, the real-time rotating speed of the bearing is detected and compared with the economic running rotating speed, if the real-time rotating speed of the bearing does not reach the economic running rotating speed, the bearing fault is judged, the information is stored in a remote monitoring terminal in a unified mode and displayed, and maintenance personnel can analyze the fault reason in time conveniently; calculating the offset slope of a bearing when the device runs, calibrating the offset slope as a change slope, establishing a dynamic rectangular coordinate system of a bearing motion track by taking time as an abscissa and taking the change slope as an ordinate, removing a highest value and a lowest value of the change slope so as to reduce errors, connecting a plurality of change slopes by straight lines to form a fluctuation broken line, setting a first reference line and a second reference line, calibrating points exceeding the first reference line and the second reference line as fluctuation points, judging the fluctuation amplitude of the fluctuation broken line according to the number of the fluctuation points, indicating that the bearing is loose if the fluctuation amplitude is larger, and sending information to a remote monitoring terminal to remind a maintenance worker to maintain in time; the motor operation monitoring module monitors the operation temperatures of a plurality of groups of motors in real time, when the average value of the operation temperatures of the motors exceeds the economic operation temperature of the motors, a power-off instruction is automatically executed, and the control module controls the motors to perform power-off treatment so as to prevent the motors from being burnt and damaged due to high-load operation of the motors; when the device is in operation, the mineral flow monitoring module reads the instantaneous flow of the belt and compares the instantaneous flow with the rated flow, if the instantaneous flow exceeds the rated flow, an acceleration instruction is generated, the control module controls the rotation speed of the motor to increase, if the instantaneous flow is lower than the rated flow, a deceleration instruction is generated, the control module controls the rotation speed of the motor to decrease, and under the condition that the normal operation of the belt of the device is guaranteed, the power energy loss is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (6)
1. A control management system for a coal screening device is characterized by comprising a screen sheet standby monitoring module, a bearing standby monitoring module, a control module, an information registration module and a remote monitoring terminal;
the screen sheet standby monitoring module is used for monitoring the distance between two adjacent sets of screen sheets in the standby state of the coal screening device, calibrating the distance as the real-time distance of the screen sheets, carrying out differential analysis on the real-time distance of the screen sheets and the rated distance of the screen sheets to obtain a screen sheet deformation difference value, and matching the screen sheet deformation difference value with the screen sheet deformation range; if the matching results of the two are consistent, generating a corresponding screen sheet alarm signal and screen sheet bending damage alarm information or screen sheet thickness extension deformation alarm information and feeding back the alarm information to the control module; wherein, the deformation range of the sieve sheet comprises five intervals of E1, E2, E3, E4 and E5; the sieve sheet alarm signaling comprises a sieve sheet alarm instruction A, a sieve sheet alarm instruction B and a sieve sheet alarm instruction C;
the bearing standby monitoring module is used for monitoring the position information of the bearing in a standby state and calibrating the position information as a standby detection position, and the specific monitoring process is as follows: matching the standby detection position with the standby fixing position, and if the matching result of the standby detection position and the standby fixing position is inconsistent, generating a position alarm signaling and feeding the position alarm signaling back to the control module;
the specific alarm processing control module is used for receiving the screen sheet alarm signaling and the position alarm signaling and carrying out alarm processing, and the specific operation is as follows:
s1: when a sieve sheet alarm instruction A is received, the control module controls the primary warning lamp to emit a color light beam with corresponding frequency;
s2: when a sieve sheet alarm instruction B is received, the control module controls the secondary warning lamp to emit color beams with corresponding frequencies;
s3: when a sieve sheet alarm instruction C is received, the control module controls the three-level warning lamp to emit color light beams with corresponding frequencies;
when a position alarm signaling is received, the control module controls the alarm equipment to send out a buzzing sound, meanwhile, the control module establishes a cross coordinate system by taking a standby fixed position of the bearing as an origin, divides the cross coordinate system into four quadrants, connects the standby fixed position with a standby detection position, marks the quadrant where the connecting line is positioned as a deflection direction, calculates an included angle between the connecting line and an X axis, marks the included angle as a deflection angle, marks the deflection direction and the deflection angle as bearing position deviation information, and transmits the bearing position deviation information to the information registration module for storage; wherein, the alarm device is arranged on the coal screening device;
the remote monitoring terminal is used for calling the stored data in the information registration module and sending maintenance inquiry information to the mobile terminal of the screening and bearing management department; the storage data comprises screen piece bending damage alarm information, screen piece thickness extension deformation alarm information and bearing position deviation information;
the specific operation process is as follows:
a maintenance worker logs in maintenance worker information through a mobile terminal and sets a arrival time point of the maintenance worker, and a control module releases a screen sheet alarm signaling and a position alarm signaling to enter a standby mode; the remote detection terminal calculates the estimated time length and scales the time length of the standby mode as the standby time length; when the standby time length exceeds the expected time length, the control module executes the screening alarm signaling and the position alarm signaling again and sends maintenance emergency information to the mobile terminal.
2. The control management system for the coal screening device according to claim 1, further comprising a lubricating oil level monitoring module;
the lubricating oil liquid level monitoring module is used for monitoring the real-time liquid level of the lubricating oil in the running state of the coal screening device, performing difference analysis on the real-time liquid level of the lubricating oil and a lowest threshold value to obtain a lubricating oil liquid level difference, and if the lubricating oil liquid level difference is a negative value, generating an emergency liquid supplementing alarm signaling; if the lubricating oil level difference is a positive value, matching the lubricating oil level difference with a defined threshold value, and if the matching result of the lubricating oil level difference and the defined threshold value is consistent, generating a to-be-supplemented alarm signaling;
the remote monitoring terminal is also used for receiving an emergency liquid supplementing alarm signaling and a to-be-supplemented alarm signaling and carrying out alarm processing; the specific alarm processing process comprises the following steps:
the remote monitoring terminal controls an alarm device of the coal screening device to make a whistle; the whistle has two decibel levels; wherein, the two decibel levels are divided into a high decibel level and a low decibel level; if the remote monitoring terminal receives the emergency fluid infusion alarm signaling, the control module controls the alarm equipment to send out a whistle with a sound size corresponding to the high decibel level; if the remote monitoring terminal receives the alarm signaling to be supplemented with liquid, the control module controls the alarm equipment to send out low-decibel whistle; after the staff injects lubricating liquid, the decibel of whistle sound reduces gradually along with the positive value increase of lubricating oil liquid level difference.
3. The control management system for the coal screening device according to claim 1, wherein the remote detection terminal is further configured to obtain a hearing ability value Gb of the person and analyze the hearing ability value Gb, and the specific analysis process is as follows:
setting five decibel drop levels, wherein each decibel drop level corresponds to one hearing interval value and a drop coefficient;
when the hearing ability value of the person belongs to the hearing interval value, marking the reduction coefficient of the hearing interval value of the person corresponding to the decibel reduction level as an execution coefficient ZX; collecting the lubricating oil level difference when a worker injects lubricating liquid; dividing the lubricating oil liquid level difference into five liquid supplementing grades according to the liquid level height, and calibrating the liquid supplementing grades as Rk;
the remote detection terminal extracts values of the execution coefficient and the lubricating oil liquid level difference, and the real-time alarm decibel DF of the alarm device is obtained through calculation;
and alarming by the alarm equipment according to the sound corresponding to the real-time alarm decibel DF, and stopping alarming when the lubricating oil level difference is equal to the maximum value.
4. The control and management system for the coal screening device according to claim 1, further comprising a bearing operation monitoring module;
the bearing operation monitoring module is used for monitoring the bearing temperature, the bearing rotating speed and the bearing operation position when the coal screening device operates, and the concrete monitoring steps are as follows:
reading the n bearing temperatures of the coal screening device in a period of operation, calculating the average value of the n bearing temperatures, calibrating the average value as the average value of the bearing operating temperatures, matching the average value with a preset economic operating temperature range KB, and if the average value is not within the preset economic operating temperature range KB, matching the average value with the preset economic operating temperature range KB
Generating a shutdown instruction and a self-detection signaling, and sending the shutdown instruction and the self-detection signaling to a control module, wherein the control module controls the coal screening device to enter a shutdown state;
the self-detection instruction comprises the following specific implementation steps: the control module detects whether the control module generates an emergency fluid infusion alarm signaling, and if the control module generates the emergency fluid infusion alarm signaling, bearing operation blocking information is generated and sent to the remote control terminal for displaying; if the control module does not generate the emergency liquid supplementing alarm signaling, x groups of bearing rotating speeds of the bearing within a period of time are called, the average value of the x groups of bearing rotating speeds is calculated and is calibrated as the bearing rotating speed average value, then the bearing rotating speed average value is compared with the economic operation rotating speed, and if the bearing rotating speed average value is smaller than the economic operation rotating speed, bearing operation fault information is generated and is transmitted to a remote monitoring terminal for displaying.
5. The control management system for the coal screening device according to claim 1, wherein the control module establishes a dynamic rectangular coordinate system of a bearing motion track with a standby detection position of the bearing as an origin, an operation time as a horizontal coordinate, and an operation position of the bearing as a vertical coordinate, reads v bearing operation positions in operation unit time, connects the standby detection position of the bearing with the v bearing operation positions, calculates a slope of each connection, and calibrates the slope to be a change slope;
establishing a bearing offset track dynamic rectangular coordinate system by taking unit time as a horizontal coordinate and taking a change slope as a vertical coordinate; setting a first reference line and a second reference line; removing a highest value and a lowest value in the v change slopes, and connecting v-2 change slopes by using a straight line to obtain a fluctuation broken line;
marking the change slope connecting point exceeding the first reference line and the second reference line as the fluctuation point, accumulating the number of the fluctuation points, and if the number of the fluctuation points is larger than or equal to the fluctuation point
And judging that the fluctuation range of the fluctuation broken line is large, generating bearing operation early warning information, and transmitting the information to a remote monitoring terminal for storage.
The motor operation monitoring module is used for monitoring the operation temperature of the motor, and the specific monitoring steps are as follows:
the method comprises the steps of reading the running temperatures of H motors in a period of time, carrying out differential analysis on the running temperatures and the economic running temperatures of the motors to obtain motor running temperature differences, comparing the motor running temperature differences with a temperature difference threshold value, if the motor running temperature differences are larger than the temperature difference threshold value, marking the motor running temperature differences as positive signals, if the motor running temperature differences are smaller than or equal to the temperature difference threshold value, marking the motor running temperature differences as negative signals, if the number of the positive signals is larger than that of the negative signals, generating power-off instructions and motor load alarm signals, transmitting the power-off instructions and the motor load alarm signals to a remote monitoring terminal, and carrying out power-off processing on the motors.
6. The control and management system for the coal screening device according to claim 1, further comprising a mineral flow monitoring module; the mineral flow monitoring module is used for acquiring the instantaneous flow of the belt in unit time;
the mineral flow monitoring module is used for calling instantaneous flow and comparing and analyzing the instantaneous flow with rated flow, if the instantaneous flow exceeds the rated flow, an acceleration instruction is generated, and the control module is used for controlling the rotation speed of the motor to increase; and if the instantaneous flow is lower than the rated flow, a speed reduction instruction is generated, and the control module controls the rotation speed of the motor to be reduced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211487937.7A CN115815112A (en) | 2022-11-25 | 2022-11-25 | Control management system for coal screening device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116809388A (en) * | 2023-08-30 | 2023-09-29 | 山东浏园生态农业股份有限公司 | Intelligent tea screening method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116809388A (en) * | 2023-08-30 | 2023-09-29 | 山东浏园生态农业股份有限公司 | Intelligent tea screening method and system |
| CN116809388B (en) * | 2023-08-30 | 2023-11-07 | 山东浏园生态农业股份有限公司 | Intelligent tea screening method and system |
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