CN116185095B - Spray cooling control system based on infrared imaging - Google Patents
Spray cooling control system based on infrared imaging Download PDFInfo
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- CN116185095B CN116185095B CN202310468819.XA CN202310468819A CN116185095B CN 116185095 B CN116185095 B CN 116185095B CN 202310468819 A CN202310468819 A CN 202310468819A CN 116185095 B CN116185095 B CN 116185095B
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- 238000001816 cooling Methods 0.000 title claims abstract description 62
- 239000007921 spray Substances 0.000 title claims abstract description 24
- 238000003331 infrared imaging Methods 0.000 title claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 61
- 238000000034 method Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000001931 thermography Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000005245 sintering Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
- G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space
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Abstract
The invention discloses a spray cooling control system based on infrared imaging, which relates to the technical field of spray cooling control and solves the problems that in the prior art, different early warning thresholds cannot be set for areas with different use degrees, so that the temperature monitoring efficiency is reduced, a plurality of subareas are equidistantly divided by an area dividing unit, the nominal bearing temperature of a conveyor belt is obtained and marked as a bearing temperature threshold, then the bearing temperature of a subarea is obtained, a subarea bearing temperature set A is then constructed, subsets in the subarea bearing temperature set A are compared with the bearing temperature threshold, the normal working time period of the conveyor belt is obtained, the running coefficients Xi of all subareas in the conveyor belt are obtained through a formula, and the conveyor belt is divided into areas with different use degrees, so that the temperature monitoring efficiency is improved and the temperature monitoring cost is reduced.
Description
Technical Field
The invention relates to the technical field of spray cooling control, in particular to a spray cooling control system based on infrared imaging.
Background
The sintered ore with enough strength and granularity can be used as the clinker for iron making, the sintered ore is transported to a blast furnace by adopting a conveyor belt in the transportation process, the sintered ore can be cooled in place (the temperature is 150 ℃ after normal cooling) in the transportation process, the belt can be easily ignited by high-temperature sintered ore in the transportation process, the whole ore conveying system is burnt, the shutdown, the production stopping and the safety problems caused by the repairing system are caused, and the whole loss can be more serious.
But in prior art, can not carry out regional division to the area to the different early warning threshold value of degree of use setting for, lead to temperature monitoring efficiency to reduce, simultaneously, can not monitor the water yield that the cooling consumed, lead to the cooling cost too high, cooling efficiency reduces.
Disclosure of Invention
The invention aims to provide a spray cooling control system based on infrared imaging, which is characterized in that a region dividing unit is used for dividing a region of a conveyor belt, so that a region is set for the conveyor belt, the conveyor belt is equidistantly divided into a plurality of sub-regions, the rated bearing temperature of the conveyor belt is obtained and marked as a bearing temperature threshold value, the bearing temperature of a sub-region is obtained, the bearing temperature of the sub-region is marked as Wi, a sub-region bearing temperature set A is constructed, a subset in the sub-region bearing temperature set A is compared with the bearing temperature threshold value, the normal working time period of the conveyor belt is obtained, the operating coefficients Xi of all the sub-regions in the conveyor belt are obtained through a formula, then the operating coefficients of all the sub-regions in the conveyor belt are constructed into a sub-region operating coefficient set B, the subset in the sub-region operating coefficient set is compared with the operating coefficient threshold value, a primary monitoring region set and a secondary monitoring region set are constructed, and the intersection of the primary monitoring region set and the secondary monitoring region set is acquired; the conveyor belt is divided into areas, so that different early warning thresholds are set for areas with different using degrees, the temperature monitoring efficiency is improved, and the temperature monitoring cost is reduced;
the aim of the invention can be achieved by the following technical scheme:
the spray cooling control system based on infrared imaging comprises a registration login unit, a database, a control cooling platform, a region dividing unit, a region monitoring unit and an energy-saving control unit;
the region dividing unit is used for dividing the region of the conveyor belt so as to set the region of the conveyor belt, and the specific dividing and setting process is as follows:
step S1: equally dividing the conveyor belt into a plurality of subareas, marking the subareas as i, i=1, 2, … …, n and n as positive integers, acquiring the rated bearing temperature of the conveyor belt, marking the rated bearing temperature as a bearing temperature threshold, acquiring the bearing temperature of the subareas and marking the bearing temperature of the subareas as Wi, and then constructing a subarea bearing temperature set A { W1, W2, …, wp, … Wi }, wherein Wp is represented as the bearing temperature of p subareas;
step S2: comparing the subset in the subset bearing temperature set A with a bearing temperature threshold, if the subset is less than or equal to the bearing temperature threshold, judging that the subset bearing temperature corresponding to the subset is unqualified, marking the subset bearing temperature as a first-level monitoring area, if the subset is more than the bearing temperature threshold, judging that the subset bearing temperature corresponding to the subset is qualified, and entering step S6;
step S3: acquiring a normal working time period of the conveyor belt, dividing the normal working time period into a plurality of sub-time periods in units of each hour, randomly selecting one sub-time period and setting the sub-time period as a monitoring time threshold;
step S4: acquiring the contact area and the contact time length between each subarea in the conveyor belt and the sinter during operation within a monitoring time threshold, marking the contact area and the contact time length between each subarea in the conveyor belt and the sinter as Mi and Si, and determining the contact area and the contact time length between each subarea in the conveyor belt and the sinter as Mi and Si according to a formulaObtaining operation coefficients Xi of all subregions in the conveyor belt, wherein a1 and a2 are proportionality coefficients, a1 is more than a2 and more than 0, beta is an error correction factor, and the value is 1.65;
step S5: then constructing a sub-region operation coefficient set B { X1, X2, …, xu, …, xn } by using the operation coefficients of all sub-regions in the conveyor belt, wherein Xu is expressed as the operation coefficient in u sub-regions, then comparing a subset in the sub-region operation coefficient set with an operation coefficient threshold value, marking the sub-region corresponding to the subset as a secondary monitoring region if the subset is more than or equal to the operation coefficient threshold value, and entering a step S6 if the subset is less than the operation coefficient threshold value;
step S6: constructing a primary monitoring area set and a secondary monitoring area set, acquiring an intersection of the primary monitoring area set and the secondary monitoring area set, and marking a sub-area corresponding to a subset in the intersection as a special setting area; if the subset corresponding to the sub-region is larger than the bearing temperature threshold value and the subset is smaller than the operation coefficient threshold value, judging that the corresponding sub-region is a non-setting region, and then sending the primary monitoring region, the secondary monitoring region, the special setting region and the non-setting region to the control cooling platform.
Further, the control cooling platform receives the primary monitoring area, the secondary monitoring area, the special setting area and the non-setting area to generate an area monitoring signal, and sends the area monitoring signal to an area monitoring unit, wherein the area monitoring unit is used for carrying out area monitoring on the running conveyor belt, and the specific area monitoring process is as follows:
step SS1: setting up a video monitoring terminal, wherein the monitoring coverage area of the video monitoring terminal is larger than the range of a conveyor belt, then monitoring the conveyor belt through the video monitoring terminal, forming a full-radiation infrared heat map by utilizing an infrared thermal imaging technology on a real-time monitored image, and simultaneously transmitting the full-radiation infrared heat map to a display terminal, wherein the infrared thermal imaging technology and the full-radiation infrared heat map are both publicly known in the prior art;
step SS2: recording the temperature before the conveyor belt runs, marking the temperature as the initial temperature, then monitoring the temperature of the conveyor belt in running, and then carrying out weight assignment on the sub-region running coefficient set B, namely the weight coefficient sets C { gX1, gX2, …, gXn } of the sub-region running coefficient set, wherein gX1+gX2+ … + gXn = 1;
step SS3: multiplying the weight coefficient of the subarea by the bearing temperature threshold to obtain a temperature threshold corresponding to the subarea, and then marking the corresponding subarea as yellow in the full-radiation infrared heat map when the temperature of the real-time sinter is within 60% -80% of the temperature threshold of the subarea, generating an early warning signal and sending the early warning signal to a mobile phone terminal of a manager; when the temperature of the real-time sinter is within the range of 81% -95% of the temperature threshold value of the subarea, the corresponding subarea is marked as red in the full-radiation infrared heat map, an alarm signal is generated and sent to a mobile phone terminal of a manager, and meanwhile, the spray head is controlled to spray water for cooling.
Further, the energy-saving control unit analyzes the temperature reduction of the spray header, so as to budget control the temperature reduction water quantity, and the specific analysis control process is as follows:
step T1: acquiring the temperature of the sintering ore in the sub-area when the alarm is generated, marking the temperature as t0, then acquiring the temperature of the sintering ore after the temperature is reduced, marking the temperature as t1, and then acquiring the conveyingThe volume of the belt peripheral space is set as the air volume, the air volume is marked as V0, the density of the belt peripheral air is obtained and marked as ρ0, and the mass m0 of the belt peripheral air is obtained through calculation, namely；
Step T2: by the formulaThe heat Q released by cooling the sinter is obtained Put and put Wherein C Empty space Is the specific heat capacity of air;
step T3: then the temperature before and after the temperature reduction of the conveyor belt is obtained through a formula, and the heat released by the temperature reduction of the conveyor belt is obtained and marked as Q Belt with a belt body Acquiring the water quantity consumed by cooling the corresponding subarea, marking the water quantity as the consumed water quantity, and then acquiring the heat absorbed by the consumed water quantity in the same environment and marking the heat as Q Suction pipe The same environment is expressed as the pressure and air flow rate when the temperature of the sintering ore in the subarea is alarmed;
step T4: the heat Q released by cooling the sinter is obtained Put and put Heat Q released by cooling the conveyor belt Belt with a belt body And mark it as total heat release, then total heat release and heat of absorption Q of the consumed water Suction pipe Comparison is performed: if the total heat release is greater than or equal to the absorption heat Q of the consumed water quantity Suction pipe If the total heat release amount is less than the absorption heat amount Q of the consumed water amount, generating a cooling disqualification signal and sending the cooling disqualification signal to a mobile phone terminal of a monitoring person Suction pipe Judging that the water consumption is sufficient, generating a cooling qualified signal, sending the cooling qualified signal to a mobile phone terminal of a monitoring person, and entering a step T5;
step T5: absorbed heat Q for total heat release and water consumption Suction pipe Calculating the ratio, if the ratio is more than or equal to 0.8, judging that the cooling efficiency is qualified, if the ratio is less than 0.8, judging that the cooling efficiency is unqualified, and taking the total heat release amount and the absorption heat amount Q of the consumed water Suction pipe Difference in progressValue calculation and marking it as heat difference Q Difference of difference Then according to the formulaObtaining the surplus water m1 in the consumed water, wherein c Water and its preparation method The specific heat capacity of water is that alpha is an error correction factor, and the value is 1.1;
step T6: and sending the surplus water m1 in the consumed water amount to a mobile phone terminal of a manager, and controlling the cooling water amount.
Furthermore, the registration login unit is used for submitting manager information and monitor information to register through the mobile phone terminal, and storing the successfully registered manager information and monitor information in data, wherein the manager information comprises the name, age, time of entering and mobile phone number of the real name authentication of the manager, and the monitor information comprises the name, age, time of entering and mobile phone number of the real name authentication of the monitor.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the method, a conveyor belt is divided into areas through an area dividing unit, so that an area is set for the conveyor belt, the conveyor belt is divided into a plurality of sub-areas at equal intervals, rated bearing temperature of the conveyor belt is obtained, the rated bearing temperature of the conveyor belt is marked as a bearing temperature threshold value, bearing temperature of the sub-areas is obtained, bearing temperature of the sub-areas is marked as Wi, a sub-area bearing temperature set A is built, subsets in the sub-area bearing temperature set A are compared with the bearing temperature threshold value, a normal working time period of the conveyor belt is obtained, operation coefficients Xi of all the sub-areas in the conveyor belt are obtained through a formula, operation coefficient sets B of all the sub-areas in the conveyor belt are built, subsets in the operation coefficient sets of the sub-areas are compared with the operation coefficient threshold value, a primary monitoring area set and a secondary monitoring area set are built, and intersections of the primary monitoring area set and the secondary monitoring area set are obtained; the conveyor belt is divided into areas, so that different early warning thresholds are set for areas with different using degrees, the temperature monitoring efficiency is improved, and the temperature monitoring cost is reduced;
2. according to the invention, the energy-saving control unit analyzes the temperature reduction of the spray header, so that budget control is carried out on the water quantity of the temperature reduction, and the mass m0 of the air around the conveyor belt is obtained through calculation; the heat Q released by cooling the sinter is obtained through a formula Put and put The method comprises the steps of carrying out a first treatment on the surface of the Then the temperature before and after the temperature reduction of the conveyor belt is obtained through a formula, and the heat released by the temperature reduction of the conveyor belt is obtained and marked as Q Belt with a belt body Acquiring the water quantity consumed by cooling the corresponding subarea, marking the water quantity as the consumed water quantity, and then acquiring the heat absorbed by the consumed water quantity in the same environment and marking the heat as Q Suction pipe The method comprises the steps of carrying out a first treatment on the surface of the The heat Q released by cooling the sinter is obtained Put and put Heat Q released by cooling the conveyor belt Belt with a belt body And marks it as total heat release, and then absorbs heat Q of total heat release and water consumption Suction pipe Comparing; absorbed heat Q for total heat release and water consumption Suction pipe Calculating a ratio, and then obtaining the surplus water m1 in the consumed water according to a formula; the redundant water quantity m1 in the consumed water quantity is sent to a mobile phone terminal of a manager, and the cooling water quantity is controlled; the water quantity consumed by cooling is monitored, the cooling cost can be greatly reduced when the temperature is effectively reduced, and the cooling efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a functional block diagram of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the spray cooling control system based on infrared imaging comprises a registration login unit, a database, a control cooling platform, a region dividing unit, a region monitoring unit and an energy-saving control unit;
the registration login unit is used for submitting manager information and monitor information to register through the mobile phone terminal, and storing the successfully registered manager information and monitor information in data, wherein the manager information comprises the name, age, job time of the manager and the mobile phone number of the real name authentication of the person, and the monitor information comprises the name, age, job time of the monitor and the mobile phone number of the real name authentication of the person;
the region dividing unit is used for dividing the region of the conveyor belt, so that the region is set for the conveyor belt, and the specific dividing setting process is as follows:
step S1: equally dividing the conveyor belt into a plurality of subareas, marking the subareas as i, i=1, 2, … …, n and n as positive integers, acquiring the rated bearing temperature of the conveyor belt, marking the rated bearing temperature as a bearing temperature threshold, acquiring the bearing temperature of the subareas and marking the bearing temperature of the subareas as Wi, and then constructing a subarea bearing temperature set A { W1, W2, …, wp, … Wi }, wherein Wp is represented as the bearing temperature of p subareas;
step S2: comparing the subset in the subset bearing temperature set A with a bearing temperature threshold, if the subset is less than or equal to the bearing temperature threshold, judging that the subset bearing temperature corresponding to the subset is unqualified, marking the subset bearing temperature as a first-level monitoring area, if the subset is more than the bearing temperature threshold, judging that the subset bearing temperature corresponding to the subset is qualified, and entering step S6;
step S3: acquiring a normal working time period of the conveyor belt, dividing the normal working time period into a plurality of sub-time periods in units of each hour, randomly selecting one sub-time period and setting the sub-time period as a monitoring time threshold;
step S4: acquiring the contact area and the contact time length between each subarea in the conveyor belt and the sinter during operation within a monitoring time threshold, marking the contact area and the contact time length between each subarea in the conveyor belt and the sinter as Mi and Si, and determining the contact area and the contact time length between each subarea in the conveyor belt and the sinter as Mi and Si according to a formulaObtaining operation coefficients Xi of all subregions in the conveyor belt, wherein a1 and a2 are proportionality coefficients, a1 is more than a2 and more than 0, beta is an error correction factor, and the value is 1.65;
step S5: then constructing a sub-region operation coefficient set B { X1, X2, …, xu, …, xn } by using the operation coefficients of all sub-regions in the conveyor belt, wherein Xu is expressed as the operation coefficient in u sub-regions, then comparing a subset in the sub-region operation coefficient set with an operation coefficient threshold value, marking the sub-region corresponding to the subset as a secondary monitoring region if the subset is more than or equal to the operation coefficient threshold value, and entering a step S6 if the subset is less than the operation coefficient threshold value;
step S6: constructing a primary monitoring area set and a secondary monitoring area set, acquiring an intersection of the primary monitoring area set and the secondary monitoring area set, and marking a sub-area corresponding to a subset in the intersection as a special setting area; if the subset corresponding to the sub-region is larger than the bearing temperature threshold value and the subset is smaller than the operation coefficient threshold value, judging that the corresponding sub-region is a non-setting region, and then sending the primary monitoring region, the secondary monitoring region, the special setting region and the non-setting region to the control cooling platform;
the control cooling platform receives the primary monitoring area, the secondary monitoring area, the special setting area and the non-setting area to generate an area monitoring signal, and sends the area monitoring signal to an area monitoring unit, wherein the area monitoring unit is used for carrying out area monitoring on a running conveyor belt, and the specific area monitoring process is as follows:
step SS1: setting up a video monitoring terminal, wherein the monitoring coverage area of the video monitoring terminal is larger than the range of a conveyor belt, then monitoring the conveyor belt through the video monitoring terminal, forming a full-radiation infrared heat map by utilizing an infrared thermal imaging technology on a real-time monitored image, and simultaneously transmitting the full-radiation infrared heat map to a display terminal, wherein the infrared thermal imaging technology and the full-radiation infrared heat map are both publicly known in the prior art;
step SS2: recording the temperature before the conveyor belt runs, marking the temperature as the initial temperature, then monitoring the temperature of the conveyor belt in running, and then carrying out weight assignment on the sub-region running coefficient set B, namely the weight coefficient sets C { gX1, gX2, …, gXn } of the sub-region running coefficient set, wherein gX1+gX2+ … + gXn = 1;
step SS3: multiplying the weight coefficient of the subarea by the bearing temperature threshold to obtain a temperature threshold corresponding to the subarea, and then marking the corresponding subarea as yellow in the full-radiation infrared heat map when the temperature of the real-time sinter is within 60% -80% of the temperature threshold of the subarea, generating an early warning signal and sending the early warning signal to a mobile phone terminal of a manager; when the temperature of the real-time sinter is within the range of 81% -95% of the temperature threshold value of the subarea, marking the corresponding subarea as red in the full-radiation infrared heat map, generating an alarm signal, sending the alarm signal to a mobile phone terminal of a manager, and controlling a spray head to spray water for cooling;
the energy-saving control unit analyzes the temperature reduction of the spray header so as to budget and control the temperature reduction water quantity, and the specific analysis and control process is as follows:
step T1: acquiring the temperature of the sinter in the sub-zone when an alarm is generated, marking the temperature as t0, then acquiring the temperature of the sinter after cooling, marking the temperature as t1, then acquiring the volume of the peripheral space of the conveyor belt, setting the volume of the peripheral space of the conveyor belt as the air volume, marking the air volume as V0, acquiring the density of the peripheral air of the conveyor belt, marking the density as ρ0, and acquiring the mass m0 of the peripheral air of the conveyor belt by calculation, namely；
Step T2: by the formulaThe heat Q released by cooling the sinter is obtained Put and put Wherein C Empty space Is the specific heat capacity of air;
step T3: then the temperature before and after the temperature reduction of the conveyor belt is obtained through a formula, and the heat released by the temperature reduction of the conveyor belt is obtained and marked as Q Belt with a belt body Acquiring the water quantity consumed by cooling the corresponding subarea, marking the water quantity as the consumed water quantity, and then acquiring the heat absorbed by the consumed water quantity in the same environment and marking the heat as Q Suction pipe The same environment is expressed as the pressure and air flow rate when the temperature of the sintering ore in the subarea is alarmed;
step T4: the heat Q released by cooling the sinter is obtained Put and put Heat Q released by cooling the conveyor belt Belt with a belt body And mark it as total heat release, then total heat release and heat of absorption Q of the consumed water Suction pipe Comparison is performed: if the total heat release is greater than or equal to the absorption heat Q of the consumed water quantity Suction pipe If the total heat release amount is less than the absorption heat amount Q of the consumed water amount, generating a cooling disqualification signal and sending the cooling disqualification signal to a mobile phone terminal of a monitoring person Suction pipe Judging that the water consumption is sufficient, generating a cooling qualified signal, sending the cooling qualified signal to a mobile phone terminal of a monitoring person, and entering a step T5;
step T5: absorbed heat Q for total heat release and water consumption Suction pipe Calculating the ratio, if the ratio is more than or equal to 0.8, judging that the cooling efficiency is qualified, if the ratio is less than 0.8, judging that the cooling efficiency is unqualified, and taking the total heat release amount and the absorption heat amount Q of the consumed water Suction pipe Calculate the difference and mark it as the heat difference Q Difference of difference Then according to the formulaObtaining the surplus water m1 in the consumed water, wherein c Water and its preparation method The specific heat capacity of water is that alpha is an error correction factor, and the value is 1.1;
step T6: and sending the surplus water m1 in the consumed water amount to a mobile phone terminal of a manager, and controlling the cooling water amount.
The working principle of the invention is as follows:
the spray cooling control system based on infrared imaging is characterized in that when the spray cooling control system works, a region dividing unit is used for dividing a region of a conveyor belt, a plurality of subareas are arranged on the conveyor belt in a set region, the conveyor belt is equidistantly divided into a plurality of subareas, the rated bearing temperature of the conveyor belt is obtained and marked as a bearing temperature threshold value, then the bearing temperature of the subareas is obtained, the bearing temperature of the subareas is marked as Wi, then a subarea bearing temperature set A is constructed, subsets in the subarea bearing temperature set A are compared with the bearing temperature threshold value, the normal working time period of the conveyor belt is obtained, and the normal working time period of the conveyor belt is obtained through a formulaAcquiring operation coefficients Xi of all sub-regions in a conveyor belt, constructing a sub-region operation coefficient set B by using the operation coefficients of all the sub-regions in the conveyor belt, comparing a subset in the sub-region operation coefficient set with an operation coefficient threshold value, constructing a primary monitoring region set and a secondary monitoring region set, and acquiring an intersection of the primary monitoring region set and the secondary monitoring region set.
The above formulas are all formulas with dimensions removed and numerical values calculated, the formulas are formulas with a large amount of data collected for software simulation to obtain the latest real situation, and preset parameters in the formulas are set by those skilled in the art according to the actual situation.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (3)
1. The spray cooling control system based on infrared imaging is characterized by comprising a control cooling platform, an area dividing unit, an area monitoring unit and an energy-saving control unit;
the region dividing unit is used for dividing the region of the conveyor belt so as to set the region of the conveyor belt, and the specific dividing and setting process is as follows:
step S1: equally dividing the conveyor belt into a plurality of subareas, marking the subareas as i, i=1, 2, … …, n and n as positive integers, acquiring the rated bearing temperature of the conveyor belt, marking the rated bearing temperature as a bearing temperature threshold, then acquiring the bearing temperature of the subareas, marking the bearing temperature of the subareas as Wi, and then constructing a subarea bearing temperature set A { W1, W2, …, wp, … Wi };
step S2: comparing the subset in the subset bearing temperature set A with a bearing temperature threshold, if the subset is less than or equal to the bearing temperature threshold, judging that the subset bearing temperature corresponding to the subset is unqualified, marking the subset bearing temperature as a first-level monitoring area, if the subset is more than the bearing temperature threshold, judging that the subset bearing temperature corresponding to the subset is qualified, and entering step S6;
step S3: acquiring a normal working time period of the conveyor belt, dividing the normal working time period into a plurality of sub-time periods in units of each hour, randomly selecting one sub-time period and setting the sub-time period as a monitoring time threshold;
step S4: the contact area and the contact time length between each subarea in the conveyor belt and the sinter during operation are obtained in the monitoring time threshold value, and the formula is adoptedAcquiring the operation coefficient Xi of each subarea in the conveyor belt;
step S5: then constructing a sub-region operation coefficient set B { X1, X2, …, xu, …, xn } by using the operation coefficients of all sub-regions in the conveyor belt, then comparing a subset in the sub-region operation coefficient set with an operation coefficient threshold value, marking the sub-region corresponding to the subset as a secondary monitoring region if the subset is more than or equal to the operation coefficient threshold value, and entering a step S6 if the subset is less than the operation coefficient threshold value;
step S6: constructing a primary monitoring area set and a secondary monitoring area set, acquiring an intersection of the primary monitoring area set and the secondary monitoring area set, and marking a sub-area corresponding to a subset in the intersection as a special setting area; if the subset corresponding to the sub-region is larger than the bearing temperature threshold value and the subset is smaller than the operation coefficient threshold value, judging that the corresponding sub-region is a non-setting region, and then sending the primary monitoring region, the secondary monitoring region, the special setting region and the non-setting region to the control cooling platform.
2. The infrared imaging-based spray cooling control system according to claim 1, wherein the control cooling platform receives the primary monitoring area, the secondary monitoring area, the special setting area and the non-setting area to generate an area monitoring signal, and sends the area monitoring signal to an area monitoring unit, and the area monitoring unit is used for carrying out area monitoring on the running conveyor belt, and the specific area monitoring process is as follows:
step SS1: setting up a video monitoring terminal, wherein the monitoring coverage area of the video monitoring terminal is larger than the range of the conveyor belt, then monitoring the conveyor belt through the video monitoring terminal, forming a full-radiation infrared heat map by utilizing an infrared thermal imaging technology on the image monitored in real time, and simultaneously transmitting the full-radiation infrared heat map to a display terminal;
step SS2: recording the temperature before the conveyor belt runs, marking the temperature as the initial temperature, then monitoring the temperature of the conveyor belt in running, and then carrying out weight assignment on the sub-region running coefficient set B, namely the weight coefficient sets C { gX1, gX2, …, gXn } of the sub-region running coefficient set, wherein gX1+gX2+ … + gXn = 1;
step SS3: multiplying the weight coefficient of the subarea by the bearing temperature threshold to obtain a temperature threshold corresponding to the subarea, and then marking the corresponding subarea as yellow in the full-radiation infrared heat map when the temperature of the real-time sinter is within 60% -80% of the temperature threshold of the subarea, generating an early warning signal and sending the early warning signal to a mobile phone terminal of a manager; when the temperature of the real-time sinter is within the range of 81% -95% of the temperature threshold value of the subarea, the corresponding subarea is marked as red in the full-radiation infrared heat map, an alarm signal is generated and sent to a mobile phone terminal of a manager, and meanwhile, the spray head is controlled to spray water for cooling.
3. The spray cooling control system based on infrared imaging according to claim 1, wherein the energy-saving control unit analyzes the temperature reduction of the spray header, so as to budget control the amount of the cooled water, and the specific analysis control process is as follows:
step T1: the mass m0 of the air around the conveyor belt is obtained through calculation;
step T2: by the formulaThe heat Q released by cooling the sinter is obtained Put and put ；
Step T3: then the temperature before and after the temperature reduction of the conveyor belt is obtained through a formula, and the heat released by the temperature reduction of the conveyor belt is obtained and marked as Q Belt with a belt body Acquiring the water quantity consumed by cooling the corresponding subarea, marking the water quantity as the consumed water quantity, and then acquiring the heat absorbed by the consumed water quantity in the same environment and marking the heat as Q Suction pipe ；
Step T4: the heat Q released by cooling the sinter is obtained Put and put Heat Q released by cooling the conveyor belt Belt with a belt body And marks it as total heat release, and then absorbs heat Q of total heat release and water consumption Suction pipe Comparing;
step T5: absorbed heat Q for total heat release and water consumption Suction pipe Calculating the ratio, and then according to the formulaObtaining the surplus water m1 in the consumed water;
step T6: and sending the surplus water m1 in the consumed water amount to a mobile phone terminal of a manager, and controlling the cooling water amount.
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