CN112525247B - Method, device and equipment for detecting saturated wear state - Google Patents
Method, device and equipment for detecting saturated wear state Download PDFInfo
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- CN112525247B CN112525247B CN201910888551.9A CN201910888551A CN112525247B CN 112525247 B CN112525247 B CN 112525247B CN 201910888551 A CN201910888551 A CN 201910888551A CN 112525247 B CN112525247 B CN 112525247B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The application provides a method, a device and equipment for detecting a saturated state, wherein the method comprises the following steps: acquiring characteristic information in the running process of the mill; and determining the saturated grinding state of the grinding machine according to the characteristic information. According to the technical scheme, whether the grinding machine is full is automatically detected, and whether the grinding machine is full is not required to be judged by a central control worker according to experience, so that the dependence degree of the grinding process of the grinding machine on the central control worker is reduced, and the automatic production level is improved.
Description
Technical Field
The application relates to the field of industrial production, in particular to a method, a device and equipment for detecting a saturated wear state.
Background
Machines capable of processing raw materials into raw meal, called mills, take the cement process as an example, calcareous, argillaceous and corrective materials (such as siliceous corrective materials, aluminous corrective materials, ferrous corrective materials, etc.) are added to the mill, from which they are comminuted into raw meal. The green material is then calcined, and the calcined product is called clinker. Then, the clinker and the gypsum are ground together to finally obtain the cement.
In order to reduce the power consumption of the mill (i.e., the amount of power consumed per unit of raw meal), it is necessary to add as much raw material as possible to the mill, and the mill grinds the raw material into a large amount of raw meal. However, if too much material is added to the mill, windup (also known as full or blind milling, a common anomaly in mill operation) can result. When the full grinding occurs, the damage can be caused to the grinding machine, and the grinding efficiency of the grinding machine is low.
In summary, it is necessary to monitor whether the mill is saturated or not, and when the mill is saturated, the problem of saturation of the mill is solved in time, so as to avoid damage to the mill. However, in the prior art, the control system is difficult to know whether the mill is saturated or not, so that the problem of saturated grinding of the mill cannot be solved in time, and the automatic production process is not facilitated.
Disclosure of Invention
The application provides a method for detecting a saturated state, which comprises the following steps:
acquiring characteristic information in the running process of the mill;
and determining the saturated grinding state of the grinding machine according to the characteristic information.
The application provides a method for detecting a saturated state, which comprises the following steps:
acquiring a first characteristic and a second characteristic in the operation process of the mill;
determining that the state of saturation of the mill is not saturated if the first type of characteristic is not greater than a first characteristic threshold;
if the first type of characteristics is larger than a first characteristic threshold value, determining a saturation parameter value according to the second type of characteristics; if the windup parameter value is greater than or equal to a windup threshold, determining that the windup state of the mill is windup; if the windup parameter value is less than a windup threshold, determining that the windup condition of the mill is not windup.
The application provides a method for detecting a saturated state, which comprises the following steps:
determining a characteristic threshold value of the mill according to historical data of the mill;
acquiring characteristic information in the running process of the mill;
and determining the saturated grinding state of the grinding machine according to the characteristic information and the characteristic threshold value.
The application provides a saturated wear state detection method, which comprises the following steps:
acquiring characteristic information in the running process of the mill, which is sent by user equipment through a WEB page or an application client; determining the saturated grinding state of the grinding machine according to the characteristic information;
and sending the saturated state of the mill to the user equipment, so that the user equipment controls the mill according to the saturated state of the mill.
The application provides a detection device of saturated state, the device includes:
the acquisition module is used for acquiring characteristic information in the running process of the mill;
and the determining module is used for determining the saturated grinding state of the grinding machine according to the characteristic information.
The application provides a check out test set of state of saturated, includes:
a processor and a machine-readable storage medium having stored thereon a plurality of computer instructions, the processor when executing the computer instructions performs:
acquiring characteristic information in the running process of the mill;
and determining the saturated grinding state of the grinding machine according to the characteristic information.
Based on the above technical solution, in the embodiment of the present application, a saturated state (i.e., saturated or unsaturated) of the mill is determined according to the characteristic information of the mill during the operation process, i.e., whether the mill is saturated or not is automatically detected, so that automatic saturated detection is realized, and stable saturated detection is realized. The center control personnel are not required to judge whether the mill is full-milled according to experience, the dependence degree of the grinding process of the mill on the center control personnel is reduced, and the automatic production level of the mill is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings of the embodiments of the present application.
FIG. 1 is a schematic flow chart illustrating a saturation detection method according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart illustrating a saturation detection method according to another embodiment of the present disclosure;
FIG. 3 is a schematic flow chart illustrating a saturation detection method according to another embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a saturation state detection device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a saturation state detection device according to an embodiment of the present application.
Detailed Description
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein is meant to encompass any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Depending on the context, moreover, the word "if" is used may be interpreted as "at … …" or "at … …" or "in response to a determination".
An embodiment of the present application provides a saturation state detection method, which may be applied to any device, such as a saturation state detection device, and as shown in fig. 1, is a flowchart of the method, and the method may include:
and 101, acquiring characteristic information in the running process of the mill.
And 102, determining the saturated grinding state of the grinding machine according to the characteristic information.
In one possible implementation, the feature information may include a first type of feature. Based thereon, if the first type of characteristic is not greater than the first characteristic threshold, it may be determined that the state of saturation of the mill is not saturated. If the first type of characteristic is greater than a first characteristic threshold, it may be determined that the state of windup of the mill is windup.
In another possible embodiment, the feature information may include a first type of feature and a second type of feature. Based thereon, if the first type of characteristic is not greater than the first characteristic threshold, it may be determined that the state of saturation of the mill is not saturated. If the first type of feature is greater than the first feature threshold, a saturation parameter value may be determined based on the second type of feature; if the saturated grinding parameter value is larger than or equal to the saturated grinding threshold value, determining that the saturated grinding state of the grinding machine is saturated grinding; if the windup parameter value is less than a windup threshold, it is determined that the windup condition of the mill is not windup.
In another possible embodiment, the feature information may include a second type of feature. Based on the second type of characteristics, determining a saturated wear parameter value; if the windup parameter value is greater than or equal to a windup threshold, determining that the windup state is windup; if the windup parameter value is less than a windup threshold, determining that the windup condition is not windup.
Determining a saturation parameter value based on a second type of characteristic, including but not limited to: and determining the saturation parameter value according to the second type of characteristics and the second characteristic threshold value. Specifically, according to the comparison result between the second type of feature and the second feature threshold, the current value of the saturation parameter value is subjected to increasing processing, so that the saturation parameter value subjected to increasing processing is obtained.
In the above embodiment, the first type of feature may include, but is not limited to, a stand-by time, and the first feature threshold may include a stand-by time threshold. Based on this, before step 101, historical grinding table time data can be selected from the historical data of the grinding machine, and the grinding table time threshold value of the grinding machine can be determined according to the historical grinding table time data.
In the above embodiments, the second type of feature may include, but is not limited to, one or any combination of the following: mill current, mill vibration, mill internal pressure difference, material layer thickness, discharge proportion and maximum vibration value. Of course, the above embodiments are only a few examples of the second type of features, and the second type of features are not limited thereto.
Based on this, the saturation parameter value is determined according to the second type of characteristics, which may include but is not limited to:
if the second type of characteristics comprise mill current and the mill current is larger than a mill current threshold value, increasing the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after increasing; if the mill current is not greater than the mill current threshold, the current value of the windup parameter may be maintained.
If the second type of characteristics comprise mill vibration and the mill vibration is smaller than a mill vibration threshold value, increasing the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increasing; if the mill vibration is not less than the mill vibration threshold, the current value of the windup parameter may be maintained.
If the second type of characteristics comprise the pressure difference in the mill and the pressure difference in the mill is larger than the threshold value of the pressure difference in the mill, increasing the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after increasing; if the in-mill pressure difference is not greater than the in-mill pressure difference threshold, the current value of the saturation parameter value may be maintained.
If the second type of characteristics comprise the thickness of the material layer and the thickness of the material layer is larger than the threshold value of the thickness of the material layer, increasing the current value of the saturated wear parameter value to obtain the saturated wear parameter value after increasing; if the thickness of the material layer is not larger than the thickness threshold value of the material layer, the current value of the saturated wear parameter value can be kept unchanged.
If the second type of characteristics comprise a discharging proportion and the discharging proportion is smaller than a discharging proportion threshold value, increasing the current value of the saturated wear parameter value to obtain the saturated wear parameter value after increasing; if the discharging proportion is not less than the discharging proportion threshold value, the current value of the saturated grinding parameter value can be kept unchanged.
If the second type of characteristics comprise a maximum vibration value and the maximum vibration value is larger than a maximum vibration value threshold value, performing increasing processing on the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increasing processing; if the maximum vibration value is not greater than the maximum vibration value threshold, the current value of the windup parameter value may be maintained unchanged.
Before step 101, if the second type of characteristic comprises mill current, historical mill current data can be selected from historical mill current data, and a mill current threshold value of the mill can be determined according to the historical mill current data. If the second type of characteristic comprises mill vibration, historical mill vibration data can be selected from historical mill vibration data of the mill, and a mill vibration threshold value of the mill can be determined according to the historical mill vibration data. If the second type of characteristics comprise the pressure difference in the mill, historical mill pressure difference data can be selected from historical data of the mill, and the pressure difference threshold value in the mill of the mill can be determined according to the historical mill pressure difference data. If the second type of characteristics comprise the material layer thickness, historical material layer thickness data can be selected from the historical data of the grinding machine, and a material layer thickness threshold value of the grinding machine can be determined according to the historical material layer thickness data. If the second type of characteristics comprise the discharging proportion, historical discharging proportion data can be selected from the historical data of the mill, and the discharging proportion threshold value of the mill can be determined according to the historical discharging proportion data. If the second type of characteristics comprise the maximum vibration value, historical maximum vibration value data can be selected from the historical data of the mill, and the maximum vibration value threshold value of the mill can be determined according to the historical maximum vibration value data.
In an example, the execution sequence is only an example given for convenience of description, and in practical applications, the execution sequence between steps may also be changed, and the execution sequence is not limited. Moreover, in other embodiments, the steps of the corresponding methods may not necessarily be performed in the order shown and described, and the methods may include more or less steps than those described. Moreover, a single step described in this specification may be broken down into multiple steps for description in other embodiments; multiple steps described in this specification may be combined into a single step in other embodiments.
Based on the above technical solution, in the embodiment of the present application, a saturated state (i.e., saturated or unsaturated) of the mill is determined according to the characteristic information of the mill during the operation process, i.e., whether the mill is saturated or not is automatically detected, so that automatic saturated detection is realized, and stable saturated detection is realized. The center control personnel are not required to judge whether the mill is full-milled according to experience, the dependence degree of the grinding process of the mill on the center control personnel is reduced, and the automatic production level of the mill is improved.
Based on the same application concept as the method, the embodiment of the present application further provides another saturation state detection method, which may include: and acquiring the first characteristic and the second characteristic in the operation process of the mill. If the first type of characteristic is not greater than the first characteristic threshold, it may be determined that the state of saturation of the mill is not saturated; if the first type of feature is greater than a first feature threshold, a saturation parameter value may be determined based on the second type of feature; if the saturation parameter value is greater than or equal to the saturation threshold value, determining that the saturation state of the mill is saturation; if the saturation parameter value is less than the saturation threshold, it may be determined that the saturation condition of the mill is not saturated.
Determining a saturation parameter value based on a second type of characteristic, including but not limited to: and determining the saturation parameter value according to the second type of characteristics and the second characteristic threshold value. Specifically, according to the comparison result between the second type of feature and the second feature threshold, the current value of the saturation parameter value is subjected to increasing processing, so that the saturation parameter value subjected to increasing processing is obtained.
Based on the same application concept as the method, the embodiment of the present application further provides another saturation state detection method, which may include: the method comprises the steps of obtaining characteristic information in the operation process of a cement mill, wherein the cement mill is used for grinding cement raw materials into cement raw materials, and the cement raw materials include but are not limited to calcareous raw materials, clayey raw materials and correction raw materials. And determining the saturated grinding state of the cement grinding machine according to the characteristic information.
Based on the same application concept as the above method, another saturation state detection method is also provided in the embodiment of the present application, and as shown in fig. 2, the method may include:
And step 202, acquiring characteristic information in the running process of the mill.
And step 203, determining the saturated grinding state of the grinding machine according to the characteristic information and the characteristic threshold value.
In one example, the feature information may include a first class of features and a second class of features, and the feature threshold may include a first feature threshold and a second feature threshold. Based thereon, if the first type of characteristic is not greater than the first characteristic threshold, it may be determined that the state of saturation of the mill is not saturated. If the first type of feature is greater than the first feature threshold, determining a saturation parameter value according to a second type of feature and a second feature threshold; if the windup parameter value is greater than or equal to a windup threshold, it may be determined that the windup condition of the mill is windup; if the windup parameter value is less than a windup threshold, it may be determined that the windup condition of the mill is not windup.
Based on the same application concept as the method, the embodiment of the present application further provides another saturation state detection method, which may include: acquiring characteristic information in the running process of the mill, which is sent by user equipment through a WEB page or an application client; determining a state of saturation of the mill (the state of saturation of the mill is saturated or unsaturated) based on the characteristic information, and sending the state of saturation of the mill to the user device, so that the user device controls the mill based on the state of saturation of the mill.
For example, the server may provide a service for querying a saturated state externally, and when a user needs to know the saturated state of the mill, the server may send operation data of the mill in a current period (i.e., feature information in an operation process of the mill), for example, the user equipment sends the feature information in the operation process of the mill to the server through a WEB page or an application client. After the server acquires the characteristic information in the operation process of the mill, the saturated grinding state of the mill can be determined according to the characteristic information, and the saturated grinding state of the mill is sent to the user equipment, so that the user equipment can acquire the saturated grinding state of the mill and control the mill according to the saturated grinding state of the mill, and the control of the mill is achieved.
The method for detecting the saturated state will be described in detail below with reference to specific application scenarios.
In this application scenario, the mill is used for milling the raw material into a raw material, and taking the processing process of cement as an example, the mill may be a cement mill, and the cement mill is used for milling the cement raw material into a cement raw material, and the cement raw material includes but is not limited to a calcareous raw material, a argillaceous raw material, and a calibration raw material (such as a siliceous calibration raw material, an aluminous calibration raw material, and an irony calibration raw material). The realization principle is similar for other types of mills, and the description is omitted later.
Illustratively, the mill may be a ball mill, a column mill, a rod mill, a tube mill, an autogenous mill, a rotary mortar roller mill, a vertical mill, a multi-layer vertical mill, a vertical roller mill, a disc mill, etc., depending on the grinding medium and the ground material, and the type of this mill is not limited, and the mill of the present application may be any type.
In the application scene, whether the mill is fully worn or not is detected according to the characteristic information in the running process of the mill, and automatic full wear detection is realized. The characteristic information may include, but is not limited to, one or any combination of the following: when the grinding table is erected, the current of the grinding machine, the vibration of the grinding machine, the pressure difference in the grinding machine, the thickness of a material layer, the discharging proportion and the maximum vibration value. Of course, the above are only a few examples and are not limiting. For convenience of description, the following example will be given of detecting whether the mill is saturated or not according to the above 7 characteristic information. In practical application, whether the mill is saturated or not can be detected according to other characteristic information besides the 7 pieces of characteristic information. Alternatively, in practical applications, whether the mill is saturated or not may be detected according to part of the 7 pieces of feature information, which is not limited herein.
The term "vertical grinding table" means the total amount of raw materials added to the mill, and the unit of vertical grinding table may be ton/hour. The stand-by grinding time is an average value of the stand-by grinding time values collected every time in the time window, for example, if the time window is 1 minute and 1 stand-by grinding time value is collected every second, the 60 stand-by grinding time values can be collected and an average value of the 60 stand-by grinding time values can be calculated, and the average value of the 60 stand-by grinding time values is the stand-by grinding time.
The mill current can also be called mill main machine current, and the mill current refers to the current used in the operation process of the mill. The mill current is the average of mill current values taken at each time within a time window, for example, if the time window is 1 minute and mill current values are taken 1 time per second, then 60 mill current values may be taken and the average of the 60 mill current values calculated, and the average of the 60 mill current values is the mill current.
The vibration of the mill refers to the vibration amplitude in the working process of the mill, namely the movement amplitude in the working process of the mill. Mill vibration is the average of the values of mill vibration taken each time within a time window, for example, if the time window is 1 minute and 1 mill vibration value is taken every second, then 60 mill vibration values may be taken and the average of the 60 mill vibration values calculated, and the average of the 60 mill vibration values is the mill vibration.
The grinding internal pressure difference is the difference between the air inlet pressure and the air outlet pressure in the working process of the grinding machine, and can represent the quantity of raw materials in the grinding machine. The mill internal pressure difference is an average value of mill internal pressure difference values acquired every time in a time window, for example, if the time window is 1 minute and 1 mill internal pressure difference value is acquired every second, the mill internal pressure difference values of 60 times are acquired, and the average value of the mill internal pressure difference values of 60 times is calculated, and the average value of the mill internal pressure difference values of 60 times is the mill internal pressure difference.
The material layer thickness refers to the thickness of raw materials in the working process of the mill, namely the thickness of the raw materials in the mill, and represents the quantity of the raw materials in the mill. The bed thickness is the average of the bed thickness values acquired each time within the time window, for example, the time window is 1 minute, and the bed thickness values are acquired 1 time per second, then the bed thickness values are acquired 60 times, and the average of the bed thickness values 60 times is calculated, and the average of the bed thickness values 60 times is the bed thickness.
The discharge ratio is the ratio of the amount of raw material to the amount of raw material during the operation of the mill, for example, the time window is 1 minute, the amount of raw material added to the mill within 1 minute is a, the amount of raw material produced from the mill after the mill grinds the raw material into raw material is B, and the discharge ratio may be (B/a) × 100%.
In one implementation, the amount of raw material A added to the mill in 1 minute, the amount of raw meal B produced in the mill in 1 minute may be monitored, and the discharge ratio may be determined based on the amount of raw material A and the amount of raw meal B. In another implementation mode, the quantity B of raw materials can be determined according to the warehousing bucket elevator current, the quantity A of the raw materials can be determined according to the vertical grinding table, and the discharging proportion can be determined according to the quantity A of the raw materials and the quantity B of the raw materials.
When the quantity B of raw materials is determined according to the warehousing bucket elevator current, a mapping relationship between the warehousing bucket elevator current and the quantity of raw materials may be configured in advance, and the mapping relationship is not limited. Based on this, assuming that the time window is 1 minute, the average value of the warehousing bucket elevator current in 1 minute can be counted, the mapping relation is inquired through the average value of the warehousing bucket elevator current, and the corresponding quantity of the raw materials is obtained, and the quantity of the raw materials is the quantity B of the raw materials.
When the amount of raw material a is determined from the time of the vertical grinding table, the amount of raw material a may be the length of the time window multiplied by the time of the vertical grinding table, for example, R is obtained when the time window is 1 minute, and R is obtained when the amount of raw material a is obtained. For another example, when the table is rotated vertically at R and the time window is 2 minutes, the amount of material a is R × 2.
The maximum vibration value refers to the maximum vibration amplitude in the working process of the mill, the maximum vibration value is the maximum value of the mill vibration value acquired every time in a time window, for example, the time window is 1 minute, the mill vibration value is acquired 1 time per second, the mill vibration value can be acquired 60 times, the maximum mill vibration value is selected from the mill vibration values 60 times, and the selected maximum mill vibration value is the maximum vibration value.
In this application scenario, in order to detect whether the mill is fully ground according to the characteristic information, it is necessary to determine a characteristic threshold of the mill according to historical data of the mill, such as a vertical mill table time threshold for a vertical mill table, a mill current threshold for a mill current, a mill vibration threshold for mill vibration, an intra-mill pressure difference threshold for an intra-mill pressure difference, a bed thickness threshold for a bed thickness, a discharge proportion threshold for a discharge proportion, and a maximum vibration value threshold for a maximum vibration value, and a determination process of the characteristic threshold is described below.
Obtaining historical data of the mill, for example, historical data of m days of normal operation, taking a time window of 1 minute and m of 1 as an example, the historical data of 1 day may be divided into 1440 historical data of time windows.
For the historical data of each time window, historical standing mill time data (such as 60 standing mill time values) of the time window can be selected from the historical data of the time window, and the standing mill time of the time window is determined according to the historical standing mill time data of the time window, so that 1440 standing mill times are obtained.
Then, the grinding table time threshold of the grinding machine is determined according to 1440 grinding table time. In one implementation, the average of the 1440 vertical stand times may be used as the vertical stand time threshold. In another implementation, the 1440 vertical grinding table times can be sorted in the order from small to large (or in the order from large to small), and the vertical grinding table time with the designated quantile is used as the vertical grinding table time threshold. For example, the designated quantile may be 50%, that is, the 720 th (1440 × 50%) vertical mill stage is used as the vertical mill stage time threshold. Of course, the above is only an example of determining the threshold value when the grinding table is set up, and the threshold value is not limited to this, and other quantiles may be used as the designated quantile.
For the historical data of each time window, the historical mill current data (such as 60 times of mill current values) of the time window can be selected from the historical data of the time window, and the mill current of the time window is determined according to the historical mill current data of the time window, so that 1440 mill currents are obtained.
Then, mill current thresholds for the mills were determined from the 1440 mill currents. In one implementation, the average of 1440 mill currents can be used as the mill current threshold. In another implementation, the 1440 mill currents can be sorted in order from small to large (or in order from large to small), and the mill current of a given quantile can be used as the mill current threshold. For example, the designated quantile may be 90%, i.e., the 1296 (1440 × 90%) mill currents as mill current thresholds. Of course, the above is only an example of determining the mill current threshold, and this is not limited, and other quantiles may be used as the designated quantile.
For the historical data of each time window, the historical mill vibration data (such as 60 times of mill vibration values) of the time window can be selected from the historical data of the time window, and the mill vibration of the time window is determined according to the historical mill vibration data of the time window, so that 1440 mill vibrations are obtained.
Then, mill vibration threshold of the mill was determined from 1440 mill vibrations. In one implementation, the average of the 1440 mill vibrations can be taken as the mill vibration threshold. In another implementation, 1440 mill vibrations can be ranked in order from small to large (or in order from large to small) and the mill vibration for a given quantile can be used as the mill vibration threshold. For example, the designated quantile may be 10%, i.e., 144 th (1440 x 10%) mill vibration as the mill vibration threshold. Of course, the above is only an example of determining the mill vibration threshold, and this is not a limitation, and other quantiles may be used as the designated quantile.
For the historical data of each time window, historical mill internal pressure difference data (such as 60 mill internal pressure difference values) of the time window can be selected from the historical data of the time window, the mill internal pressure difference of the time window is determined according to the historical mill internal pressure difference data of the time window, and then 1440 mill internal pressure differences are obtained.
Then, the intramill pressure difference threshold of the mill was determined from the 1440 intramill pressure differences. In one implementation, the mean of the 1440 intramill pressure differentials may be used as the intramill pressure differential threshold. In another implementation, the 1440 mill internal pressure differences may be sorted in order from small to large (or in order from large to small), and the mill internal pressure difference of a given quantile may be used as the mill internal pressure difference threshold. For example, the designated quantile may be 90%, i.e., the 1296 (1440 × 90%) intramill pressure difference may be used as the intramill pressure difference threshold. Of course, the above is only an example of determining the intra-mill pressure difference threshold, and this is not limited, and other quantiles may be used as the designated quantile.
For the historical data of each time window, the historical material layer thickness data (for example, 60 material layer thickness values) of the time window can be selected from the historical data of the time window, and the material layer thickness of the time window is determined according to the historical material layer thickness data of the time window, so that 1440 material layer thicknesses are obtained.
The mill bed thickness threshold was then determined from the 1440 bed thicknesses. In one implementation, the average of the 1440 layer thicknesses may be used as a layer thickness threshold. In another implementation, the 1440 bed thicknesses may be sorted in order from small to large (or in order from large to small), and the bed thickness of the specified quantile may be used as the bed thickness threshold. For example, the assigned quantile may be 90%, i.e., 1296 (1440 × 90%) of the thickness of the individual layers as the layer thickness threshold. Of course, the above is only an example of determining the bed thickness threshold, and the number of quantiles is not limited thereto, and other quantiles may be used as the designated quantile.
And aiming at the historical data of each time window, selecting historical discharging proportion data of the time window from the historical data of the time window, determining the discharging proportion of the time window according to the historical discharging proportion data of the time window, and then obtaining 1440 discharging proportions. And determining a discharge ratio threshold value of the mill according to the 1440 discharge ratios. In one implementation, the average of the 1440 draw down ratios is taken as the draw down ratio threshold. In another implementation, the 1440 discharge ratios are sorted in order from small to large (or in order from large to small), with the discharge ratio for the specified quantile being the discharge ratio threshold. If the designated quantile is 10%, the 144 th (1440 x 10%) discharge proportion is used as the discharge proportion threshold. Of course, the above is only an example of determining the discharge ratio threshold, and the method is not limited thereto.
For the historical data of each time window, the historical maximum vibration value data of the time window can be selected from the historical data of the time window, the maximum vibration value of the time window is determined according to the historical maximum vibration value data of the time window, and then 1440 maximum vibration values are obtained. Then, a maximum vibration threshold for the mill was determined based on the 1440 maximum vibration values. In one implementation, the average of the 1440 maximum vibration values may be taken as the maximum vibration value threshold. In another implementation, the 1440 maximum vibration values may be sorted in order from small to large (or in order from large to small), and the maximum vibration value for the given quantile may be used as the maximum vibration value threshold. For example, the designated quantile may be 98%, i.e., the 1411 (1440 × 98%) th maximum vibration value as the maximum vibration value threshold. Of course, the above is only an example of determining the maximum vibration value threshold, and this is not limited, and the designated quantile may be other quantiles.
Based on the above characteristic threshold, another saturation state detection method is further provided in this embodiment, as shown in fig. 3, which is a schematic flow chart of the method, and the method may include:
Assuming that the time window is 1 minute, the time for standing the mill, the current of the mill, the vibration of the mill, the pressure difference in the mill, the thickness of the material layer, the discharging ratio and the maximum vibration value can be obtained according to the data of the mill in 1 minute (namely the data from the time A to the current time, and the difference between the time A and the current time is 1 minute).
For example, the table time is determined according to the 60 table time values of the time window; determining mill current according to the 60-time mill current value of the time window; determining mill vibration according to the 60-time mill vibration value of the time window; determining the pressure difference in the vertical mill according to the internal pressure difference value of the mill for 60 times in the time window; determining the thickness of the material layer according to the thickness value of the material layer of 60 times in the time window; determining the discharging proportion according to the quantity of the raw materials and the quantity of the raw materials in the time window; the maximum vibration value is determined from the 60 mill vibration values for the time window.
If yes, step 303 is performed, if no, step 311 is performed.
Wherein the saturation parameter value (flag) may have an initial value of 0.
And 305, judging whether the mill internal pressure difference is larger than a mill internal pressure difference threshold value. If yes, add 1 to the saturated wear parameter value, and execute step 306; if not, the windup parameter value is kept unchanged, and step 306 is executed.
Of course, the above step adds 1 or 2 to the saturation parameter value, which is only one example in the application scenario, and this is not limited, for example, when the discharging ratio is smaller than the discharging ratio threshold, 2 may be added to the saturation parameter value, and when the maximum vibration value is larger than the maximum vibration value threshold, 1 may be added to the saturation parameter value.
In step 309, it is determined whether the saturation parameter value is greater than or equal to a saturation threshold.
If so, step 310 may be performed; if not, step 311 may be performed.
The saturation threshold may be configured empirically, but is not limited thereto, such as 2, 3, 4, etc.
For example, the initial value of the saturation parameter is 0, and if the mill current is greater than the mill current threshold, 1 is added to the saturation parameter, that is, the saturation parameter is 1. If the vibration of the mill is not less than the vibration threshold value of the mill, keeping the saturation parameter value unchanged, namely keeping the saturation parameter value at 1. If the grinding internal pressure difference is not larger than the grinding internal pressure difference threshold value, the saturation grinding parameter value is kept unchanged, namely the saturation grinding parameter value is still 1. If the thickness of the material layer is larger than the thickness threshold of the material layer, adding 1 to the saturated wear parameter value, namely, the saturated wear parameter value is 2. If the discharging proportion is smaller than the discharging proportion threshold value, adding 1 to the saturation parameter value, namely, the saturation parameter value is 3. If the maximum vibration value is not larger than the maximum vibration value threshold value, the saturation wear parameter value is kept unchanged, namely the saturation wear parameter value is still 3. In summary, after the above steps, the saturation parameter value obtained finally is 3, and it is determined whether the saturation parameter value is greater than or equal to the saturation threshold.
In step 310, it is determined that the mill is saturated.
In step 311, it is determined that the mill is saturated.
In an example, the execution sequence is only an example given for convenience of description, and in practical applications, the execution sequence between steps may also be changed, and the execution sequence is not limited. Moreover, in other embodiments, the steps of the respective methods do not have to be performed in the order shown and described herein, and the methods may include more or less steps than those described herein. Moreover, a single step described in this specification may be broken down into multiple steps for description in other embodiments; multiple steps described in this specification may be combined into a single step in other embodiments.
Based on the above technical solution, in the embodiment of the present application, a saturated state (i.e., saturated or unsaturated) of the mill is determined according to characteristic information of the mill during operation, that is, whether the mill is saturated or not is automatically detected, so that automatic saturated detection is implemented, and stable saturated detection is implemented. The experience knowledge of the central control personnel can be explicitly solidified, the central control personnel are not required to judge whether the mill is full-milled according to experience, the dependence degree of the milling process of the mill on the central control personnel is reduced, and the automatic production level of the mill is improved. The threshold value for judging the full grinding is automatically obtained through the historical data of the grinding machine, so that the grinding machine can keep safe and stable production. The threshold value of the saturated grinding judgment is changed along with the running state of the grinding machine, the automatic updating is fast carried out based on historical data, and the detection method of the saturated grinding state has good adaptivity.
Based on the same application concept as the method, an embodiment of the present application further provides a saturation state detection apparatus, as shown in fig. 4, which is a structural diagram of the apparatus, and the apparatus may include:
an obtaining module 41, configured to obtain characteristic information of the mill in the operation process;
a determination module 42 for determining a saturated state of the mill based on the characteristic information.
In one example, the feature information includes a first type of feature and a second type of feature; the determining module 42 is specifically configured to: determining that the saturated state is not saturated if the first type of feature is not greater than a first feature threshold; if the first type of characteristics is larger than a first characteristic threshold value, determining a saturation parameter value according to the second type of characteristics; determining that the saturated state is saturated if the saturated parameter value is greater than or equal to a saturated threshold value; determining that the saturated state is unsaturated if the saturation parameter value is less than a saturation threshold.
In an example, the feature information includes a first type of feature, and the determining module 42 is specifically configured to: determining that the saturated state is not saturated if the first type of feature is not greater than a first feature threshold.
The feature information includes a second type of feature, and the determining module 42 is specifically configured to: determining a saturated wear parameter value according to the second type of characteristics; if the windup parameter value is greater than or equal to a windup threshold, determining that the windup state is windup; determining that the saturated state is not saturated if the saturation parameter value is less than a saturation threshold.
In one example, the determining module 42 is specifically configured to, when determining the saturation parameter value according to the second type of characteristic: and according to the comparison result between the second type of characteristics and the second characteristic threshold value, performing increasing processing on the current value of the saturated wear parameter value to obtain the saturated wear parameter value after the increasing processing.
In one example, the first type of characteristic comprises a stand-off time, the first characteristic threshold comprises a stand-off time threshold, and the determining module 42 is further configured to select historical stand-off time data from historical data of the mill; and determining a vertical grinding table time threshold value of the grinding machine according to the historical vertical grinding table time data.
In one example, the second type of feature includes one or any combination of the following: mill current, mill vibration, mill internal pressure difference, material layer thickness, discharging proportion and maximum vibration value; the determining module 42 is specifically configured to, when determining the saturation parameter value according to the second type of characteristic: if the second type of characteristics comprise mill current and the mill current is larger than a mill current threshold value, performing increasing processing on the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increasing processing; if the second type of characteristics comprise mill vibration and the mill vibration is smaller than a mill vibration threshold value, performing increasing processing on the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increasing processing; if the second type of characteristics comprise the pressure difference in the mill and the pressure difference in the mill is larger than the pressure difference threshold value in the mill, increasing the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increase; if the second type of characteristics comprise the thickness of the material layer and the thickness of the material layer is larger than the threshold value of the thickness of the material layer, increasing the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increase; if the second type of characteristics comprise a discharging proportion and the discharging proportion is smaller than a discharging proportion threshold value, performing increasing processing on the current value of the saturated wear parameter value to obtain the saturated wear parameter value after the increasing processing; and if the second type of characteristics comprise a maximum vibration value and the maximum vibration value is larger than a maximum vibration value threshold value, performing increasing processing on the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increasing processing.
In one example, the determining module 42 is further configured to select historical mill current data from the historical data of the mill if the second type of feature includes mill current, and determine a mill current threshold of the mill based on the historical mill current data; if the second type of characteristics comprise mill vibration, selecting historical mill vibration data from the historical data of the mill, and determining a mill vibration threshold value of the mill according to the historical mill vibration data; if the second type of characteristics comprise the pressure difference in the mill, selecting historical pressure difference data in the mill from the historical data of the mill, and determining the pressure difference threshold value in the mill of the mill according to the historical pressure difference data in the mill; if the second type of characteristics comprise the material layer thickness, selecting historical material layer thickness data from the historical data of the grinding machine, and determining a material layer thickness threshold of the grinding machine according to the historical material layer thickness data; if the second type of characteristics comprise a discharging proportion, selecting historical discharging proportion data from the historical data of the mill, and determining a discharging proportion threshold of the mill according to the historical discharging proportion data; if the second type of characteristics comprise the maximum vibration value, selecting historical maximum vibration value data from the historical data of the mill, and determining the maximum vibration value threshold value of the mill according to the historical maximum vibration value data.
Based on the same application concept as the method, an embodiment of the present application further provides a saturation state detection apparatus, including: a processor and a machine-readable storage medium having stored thereon a plurality of computer instructions, the processor when executing the computer instructions performs:
acquiring characteristic information in the running process of the mill;
and determining the saturated grinding state of the grinding machine according to the characteristic information.
The embodiment of the application also provides a machine-readable storage medium, wherein a plurality of computer instructions are stored on the machine-readable storage medium; the computer instructions when executed perform the following:
acquiring characteristic information in the running process of the mill;
and determining the saturated grinding state of the grinding machine according to the characteristic information.
Referring to fig. 5, a block diagram of a saturation state detection device in an embodiment of the present application is shown, where the saturation state detection device may include: a processor 51, a network interface 52, a bus 53, and a memory 54. The memory 54 may be any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, and the like. For example, the memory 54 may be: RAM (random Access Memory), volatile Memory, non-volatile Memory, flash Memory, a storage drive (e.g., a hard drive), a solid state drive, any type of storage disk (e.g., a compact disk, a dvd, etc.).
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Furthermore, these computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. A method of detecting a saturated condition, the method comprising:
acquiring a first characteristic and a second characteristic in the operation process of the mill; when the first type of features comprise a vertical grinding table, the second type of features comprise one or any combination of the following: mill current, mill vibration, mill internal pressure difference, material layer thickness, discharging proportion and maximum vibration value;
determining that the state of saturation of the mill is not saturated if the first type of characteristic is not greater than a first characteristic threshold;
if the first type of characteristic is larger than a first characteristic threshold value, determining a saturated wear parameter value according to the second type of characteristic; if the windup parameter value is greater than or equal to a windup threshold, determining that the windup state of the mill is windup; if the windup parameter value is less than a windup threshold, determining that the windup condition of the mill is not windup.
2. The method of claim 1,
determining a saturation parameter value according to the second type of characteristics includes:
and according to the comparison result between the second type of characteristics and the second characteristic threshold value, performing increasing processing on the current value of the saturated wear parameter value to obtain the saturated wear parameter value after the increasing processing.
3. The method of claim 1, wherein the first characteristic threshold comprises a stand-alone threshold, the method further comprising:
selecting historical vertical grinding table time data from the historical data of the grinding machine;
and determining a vertical grinding table time threshold value of the grinding machine according to the historical vertical grinding table time data.
4. The method of claim 1, wherein determining a saturation parameter value based on the second type of characteristic comprises:
if the second type of characteristics comprise mill current and the mill current is larger than a mill current threshold value, increasing the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increase;
if the second type of characteristics comprise mill vibration and the mill vibration is smaller than a mill vibration threshold value, performing increasing processing on the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increasing processing;
if the second type of characteristics comprise the pressure difference in the mill and the pressure difference in the mill is larger than the pressure difference threshold value in the mill, increasing the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increase;
if the second type of characteristics comprise the thickness of the material layer and the thickness of the material layer is larger than the threshold value of the thickness of the material layer, increasing the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increase;
if the second type of characteristics comprise a discharging proportion and the discharging proportion is smaller than a discharging proportion threshold value, performing increasing processing on the current value of the saturated grinding parameter value to obtain the saturated grinding parameter value after the increasing processing;
and if the second type of characteristics comprise a maximum vibration value and the maximum vibration value is larger than a maximum vibration value threshold value, performing increasing processing on the current value of the saturated wear parameter value to obtain the saturated wear parameter value after the increasing processing.
5. The method of claim 4, further comprising:
if the second type of characteristics comprise mill current, selecting historical mill current data from the historical data of the mill, and determining a mill current threshold of the mill according to the historical mill current data;
if the second type of characteristics comprise mill vibration, selecting historical mill vibration data from the historical data of the mill, and determining a mill vibration threshold value of the mill according to the historical mill vibration data;
if the second type of characteristics comprise the pressure difference in the mill, selecting historical pressure difference data in the mill from the historical data of the mill, and determining the pressure difference threshold value in the mill of the mill according to the historical pressure difference data in the mill;
if the second type of characteristics comprise the material layer thickness, selecting historical material layer thickness data from the historical data of the grinding machine, and determining a material layer thickness threshold of the grinding machine according to the historical material layer thickness data;
if the second type of characteristics comprise a discharging proportion, selecting historical discharging proportion data from the historical data of the mill, and determining a discharging proportion threshold of the mill according to the historical discharging proportion data;
and if the second type of characteristics comprise the maximum vibration value, selecting historical maximum vibration value data from the historical data of the mill, and determining the maximum vibration value threshold of the mill according to the historical maximum vibration value data.
6. A method of detecting a saturated condition, the method comprising:
determining a characteristic threshold value of the mill according to historical data of the mill;
acquiring characteristic information in the running process of the mill;
determining a saturated grinding state of the grinding machine according to the characteristic information and the characteristic threshold value;
wherein the feature information comprises a first class of features and a second class of features, and the feature threshold comprises a first feature threshold and a second feature threshold; when the first type of features comprise a vertical grinding table, the second type of features comprise one or any combination of the following: mill current, mill vibration, mill internal pressure difference, material layer thickness, discharge proportion and maximum vibration value;
determining a state of saturated grinding of the mill based on the characteristic information and the characteristic threshold, including:
determining that the saturated state is not saturated if the first type of feature is not greater than a first feature threshold;
if the first type of features is larger than the first feature threshold, determining a saturation parameter value according to the second type of features and the second feature threshold; determining that the saturated state is saturated if the saturated parameter value is greater than or equal to a saturated threshold value; determining that the saturated state is not saturated if the saturation parameter value is less than a saturation threshold.
7. A method of detecting a saturated condition, the method comprising:
acquiring characteristic information in the running process of the mill, which is sent by user equipment through a WEB page or an application client;
determining the saturated grinding state of the grinding machine according to the characteristic information; wherein said determining a saturated grinding state of said mill based on said characteristic information comprises: the feature information comprises a first class of features and a second class of features, and if the first class of features is not greater than a first feature threshold, the saturated state is determined to be unsaturated; if the first type of characteristic is larger than a first characteristic threshold value, determining a saturated wear parameter value according to the second type of characteristic; determining that the saturated state is saturated if the saturated parameter value is greater than or equal to a saturated threshold value; if the windup parameter value is less than a windup threshold, determining that the windup state is not windup; when the first type of features comprise a vertical grinding table, the second type of features comprise one or any combination of the following: mill current, mill vibration, mill internal pressure difference, material layer thickness, discharging proportion and maximum vibration value;
and sending the saturated state of the mill to the user equipment, so that the user equipment controls the mill according to the saturated state of the mill.
8. A saturated wear state detection device, comprising:
the acquisition module is used for acquiring characteristic information in the running process of the mill;
the determining module is used for determining the saturated grinding state of the grinding machine according to the characteristic information;
wherein the feature information comprises a first type of feature and a second type of feature; when the first type of features comprise a vertical grinding table, the second type of features comprise one or any combination of the following: mill current, mill vibration, mill internal pressure difference, material layer thickness, discharging proportion and maximum vibration value;
the determining module is specifically configured to, when determining the saturated grinding state of the mill according to the characteristic information:
determining that the saturated state is not saturated if the first type of feature is not greater than a first feature threshold;
if the first type of characteristics are larger than a first characteristic threshold value, determining a saturation wear parameter value according to the second type of characteristics;
determining that the saturated state is saturated if the saturated parameter value is greater than or equal to a saturated threshold value;
determining that the saturated state is not saturated if the saturation parameter value is less than a saturation threshold.
9. A saturated state detection apparatus, comprising:
a processor and a machine-readable storage medium having stored thereon a plurality of computer instructions, the processor when executing the computer instructions performs:
acquiring characteristic information in the running process of the mill;
determining the saturated grinding state of the grinding machine according to the characteristic information;
wherein said determining a saturated grinding state of said mill based on said characteristic information comprises:
the feature information comprises a first class of features and a second class of features, wherein when the first class of features comprises a vertical grinding table, the second class of features comprises one or any combination of the following: mill current, mill vibration, mill internal pressure difference, material layer thickness, discharging proportion and maximum vibration value;
determining that the saturated state is unsaturated if the first type of feature is not greater than a first feature threshold;
if the first type of feature is larger than a first feature threshold value, determining a saturation parameter value according to the second type of feature; determining that the saturated state is saturated if the saturated parameter value is greater than or equal to a saturated threshold value; determining that the saturated state is not saturated if the saturation parameter value is less than a saturation threshold.
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