Integrated dedusting-cooling system and method for high-temperature mining working face of mine

Abstract

The invention discloses an integrated dedusting-cooling system and method for a high-temperature mining working face of a mine. The integrated dedusting-cooling system comprises a sensor monitoring device, a fuzzy PID control device and a dedusting-cooling device, after the compressed air injection unit of the dust removal and cooling device sucks high-temperature dust-containing airflow in the environment into the system, primary dust removal is performed in the humidification and growth unit firstly, then cold fog cooling and secondary dust removal are performed in the cold fog dust removal unit, and finally airflow purification and tertiary dust removal are performed in the dust filtration and fog dissipation unit. In addition, the sensor monitoring device is adopted to collect environmental monitoring data in real time and feed back the environmental monitoring data to the fuzzy PID control device for processing, when any monitoring data deviates from the environmental parameters set by the system, the working condition of the dust removal and cooling device can be adaptively regulated and controlled, and then continuous dust removal and cooling are conducted on the high-temperature mining working face under different environmental parameters. And efficient cooperative treatment of dust and heat damage on the high-temperature mining working face of the mine is realized. The device has the advantages of being small in dust escape amount, high in dust removal-cooling efficiency and low in energy consumption.

Description

Technical Field

[0001] The present invention relates to the field of coordinated control of mine dust and heat damage, and in particular to an integrated dust removal-cooling system and method for a high-temperature mining working face in a mine. Background Art

[0002] With the continuous development of technology, the degree of mechanized mining in coal mines has been continuously improved, and the mining depth of mines has been continuously deepened, resulting in an increase in the amount of dust produced underground in coal mines and an increase in the working environment temperature. High dust and high temperature environment not only seriously endanger the health of mine workers, but also greatly reduce production efficiency and increase the incidence of production accidents, becoming one of the main factors restricting mine safety production. The "Coal Mine Safety Regulations" stipulate that the dust concentration in the air of the workplace should meet the following standards: (1) When the free silica content in the dust is less than 10%, the maximum allowable concentration of total dust is 10mg / m 3 The maximum allowable concentration of respirable dust is 3.5 mg / m 3 (2) When the free silica content in the dust is ≥10%, the maximum allowable concentration of total dust is 2 mg / m 3 The maximum allowable concentration of respirable dust is 1 mg / m 3 . At the same time, it is stipulated that the air temperature of the mining face of the production mine shall not exceed 26℃, and the air temperature of the electromechanical chamber shall not exceed 30℃. When the air temperature exceeds, the working hours of the staff at the over-temperature location must be shortened, and high temperature health care treatment must be given. When the air temperature of the mining face exceeds 30℃ and the air temperature of the electromechanical chamber exceeds 34℃, work must be stopped. Therefore, dust removal and cooling measures must be taken for mines with excessive dust concentration and excessively high ambient temperature.

[0003] The commonly used methods for underground dust removal are water-cooled mist dust removal and ventilation dust removal. Among the existing heat damage control methods, the most common methods are enhanced ventilation, refrigeration and cooling, air conditioning cooling, etc. Enhanced ventilation requires the addition of air ducts in the mine, which not only increases costs, but also a large number of ventilation ducts are likely to affect the mine ventilation network, causing adverse effects. Common refrigeration and cooling methods include cooling water cooling, ice making cooling, and air compression cooling. No matter which cooling measure is used, it has the disadvantages of high cost and high energy consumption. Air conditioning cooling will generate huge engineering costs, and the underground mining working face is wide, and the cooling effect is difficult to cover the whole situation. Considering the constraints and influences between dust removal measures and cooling measures, and reducing engineering costs at the same time, in recent years, people no longer separate the dust removal and cooling issues, but take dust removal and cooling as common technical goals, and develop new control measures for the combination of dust removal and cooling. CN110327726A discloses an integrated dust suction and dust removal device, which can achieve the purpose of separating dust in the air from clean air, but because there is no refrigeration device and the fan motor in the device is running and heating, it is impossible to carry out the cooling work of the high-temperature mining working face. CN109091992A discloses an air filter, which sucks the working face gas into the humidification serpentine pipe and discharges it out of the system after cooling through the filter device and the refrigeration plate, so as to achieve cooling, dehumidification and dust reduction, but the refrigeration plate of the system will accumulate a lot of dust when it operates for a long time, which affects the refrigeration effect and requires regular cleaning and maintenance, making it difficult to adapt to the working conditions of the high-temperature mining working face in the mine, and because the dust and temperature state in the high-temperature dusty working face are constantly changing, and the above device does not have an intelligent control function, it is impossible to adjust the intensity of cooling and dust removal in real time according to environmental changes, and cannot achieve continuous dust removal and cooling of the air environment of the high-temperature mining working face.

[0004] In summary, the existing combined dust removal and cooling technology for high-temperature mining working faces in mines still has problems such as poor adaptability, low degree of automation, and high cost. Therefore, it is urgent to develop an efficient integrated adaptive dust removal and cooling method and equipment that is highly adaptable, relatively intelligent, and low in cost. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides an integrated dust removal-cooling system and method for the high-temperature mining working face in a mine, which can remove dust and cool the air environment of the high-temperature mining working face in the mine, and at the same time can adaptively adjust the intensity of cooling and dust removal in real time according to changes in the air environment of the high-temperature mining working face, thereby realizing continuous cooling and dust removal of the high-temperature mining working face under different conditions, and can achieve the desired effect.

[0006] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: an integrated dust removal-cooling system for a high-temperature mining working face in a mine, comprising a sensor monitoring device, a fuzzy PID control device and a dust removal and cooling device;

[0007] The dust removal and cooling device includes a compressed air ejection unit, a humidification growth unit, a cold mist dust reduction unit and a dust filtering and mist elimination unit; the compressed air ejection unit includes an air inlet tube, a collector and an annular combination ejector. The collector is installed at one end of the air inlet tube and is used to collect the surrounding high-temperature dust-containing wind flow and then flow it into the air inlet tube. The annular combination ejector is installed in the air inlet tube, and its injection direction is toward the other end of the air inlet tube. The air inlet of the annular combination ejector is connected to the downhole air supply pipeline through a first air pipe. The first air pipe is equipped with a first solenoid valve for controlling the on and off of the first air pipe. The high-pressure gas is ejected through the annular combination ejector to form a negative pressure in the air inlet pipe, thereby guiding the high-temperature dust-containing wind flow from the air inlet pipe one end of the air inlet is connected to the other end of the air inlet cylinder, so as to allow the high-temperature dust-laden airflow to enter; the humidifier is installed in the first cavity, and the water inlet of the humidifier is connected to the underground water supply pipeline through the first water pipe, and the first water pipe is provided with a second solenoid valve for controlling the on-off of the first water pipe, and the first cavity is continuously humidified by the humidifier to form a water supersaturated environment, so that the dust particles in the high-temperature dust-laden airflow continue to grow, condense and settle in the environment; the cold mist dust reduction unit comprises a second cavity, a chiller and a plurality of nozzles, and one end of the second cavity is connected to the other end of the first cavity, so as to introduce the first cavity into the airflow; the second cavity is connected to the other end of the first cavity, so as to allow the high-temperature dust-laden airflow to enter the airflow; the humidifier is installed in the first cavity, and the water inlet of the humidifier is connected to the underground water supply pipeline through the first water pipe, and the first water pipe is provided with a second solenoid valve for controlling the on-off of the first water pipe, and the first cavity is continuously humidified by the humidifier to form a water supersaturated environment, so that the dust particles in the high-temperature dust-laden airflow continue to grow, condense and settle in the environment; the cold mist dust reduction unit comprises a second cavity, a chiller and a plurality of nozzles, and one end of the second cavity is connected to the other end of the first cavity, so as to introduce the first cavity into the airflow; the cold mist dust reduction unit comprises a second cavity, a chiller and a plurality of nozzles, and ... a plurality of nozzles are arranged in the second cavity, and the plurality of nozzles are connected to the cold mist pipeline, the chiller is installed outside the second cavity, and the water inlet of the chiller is connected to the underground water supply pipeline through the second water pipe, so that the water in the underground water supply pipeline enters the chiller for cooling and forms low-temperature water; a three-way joint is installed at one end of the cold mist pipeline, and the two ports of the three-way joint are respectively connected to the underground air supply pipeline and the water outlet of the chiller through the pipeline, and a third solenoid valve is installed between the three-way joint and the underground air supply pipeline for controlling the on-off of the three-way joint and the underground air supply pipeline; a fourth solenoid valve is installed on the second water pipe for controlling the on-off of the second water pipe; the high-pressure gas in the underground air supply pipeline The low-temperature water generated by the body and the chiller enters the cold mist pipeline through a three-way joint to mix, and sprays low-temperature air-water cold mist from each nozzle to cool the airflow in the second cavity and reduce dust again; a pressure regulating valve is installed on the cold mist pipeline to control the pressure of the low-temperature air-water cold mist sprayed from the nozzle; the dust filtering and mist elimination unit includes a third cavity and a filtering device, one end of the third cavity is connected to the other end of the second cavity, and is used to introduce the airflow treated by the second cavity; a sewage outlet is provided at the bottom of the third cavity, the filtering device is installed in the third cavity and covers a certain cross-section of the third cavity, the filtering device filters the passing airflow for dust removal and moisture absorption, and discharges the airflow from the other end of the third cavity after completion;

[0008] The sensor monitoring device includes a laser particle size sensor, a dust concentration sensor and a temperature sensor. The laser particle size sensor is installed in the first cavity to monitor the growth diameter of the dust particles in the first cavity. The dust concentration sensor and the temperature sensor are installed in the surrounding environment to monitor the ambient dust concentration and ambient temperature respectively.

[0009] The fuzzy PID control device is connected to the laser particle size sensor, the dust concentration sensor, the temperature sensor, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the pressure regulating valve, the chiller and the humidifier, and is used to control the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the chiller and the humidifier to start dust removal and cooling, and receives the data fed back by the laser particle size sensor, the dust concentration sensor and the temperature sensor for analysis and processing, and then adjusts the power of the humidifier and the low-temperature water temperature generated by the chiller through the humidifier power converter and the chiller power converter respectively, and at the same time adjusts the pressure of the low-temperature air-water mist by controlling the pressure regulating valve.

[0010] Furthermore, the filtering device is composed of multiple filtering layers; the first filter is installed on the first air pipe, the second filter is installed on the first water pipe, the third filter is installed between the three-way joint and the underground air supply pipeline, and the fourth filter is installed on the second water pipe. By setting up multiple filtering layers, the adsorption and purification effect of the final exhaust air flow can be guaranteed, and adding multiple filters can prevent impurities contained in the underground air supply pipeline and the underground water supply pipeline from entering the system with gas or water, ensuring the stable operation of the system in cooling and dust removal.

[0011] Furthermore, the air inlet duct, the first cavity, the second cavity and the third cavity are all coaxially connected in sequence, so as to facilitate the smooth passage of airflow to achieve cooling and dust removal.

[0012] The working method of the above-mentioned integrated dust removal-cooling system for high-temperature mining working face in a mine comprises the following specific steps:

[0013] Step 1. Install the integrated dust removal and cooling system on the return air or downwind side of the high-temperature mining face in the mine where dust removal and cooling are required; start the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the chiller and the humidifier, and the high-temperature dust-laden airflow in the surrounding environment is sucked in by the negative pressure of the compressed wind injection unit. The high-temperature dust-laden airflow first enters the water-saturated environment formed by the humidification growth unit, so that the dust particles contained in it continue to grow, condense and settle in this environment, and partially settle under the action of gravity, thereby realizing primary dust removal; the airflow after primary dust removal enters the cold mist dust reduction unit, and multiple nozzles in the unit continuously spray high-pressure airflow and low Ultrafine cold mist is formed under the joint action of warm water flow. The ultrafine cold mist is mixed with wind flow in the cold mist dust reduction unit for heat exchange and evaporation, thereby cooling the wind flow. At the same time, dust agglomerates further grow and condense in the environment, and dust agglomerates are also settled in the process of collision and interception with fog droplets, realizing cooling and secondary dust removal; the wind flow after cooling and secondary dust removal finally enters the dust filtering and mist elimination unit, and the filtering device therein absorbs and filters the remaining dust particles and cold mist droplets in the wind flow, realizing wind flow purification and tertiary dust removal, and finally discharges low-temperature and purified wind flow from the dust filtering and mist elimination unit to remove dust and cool the air environment of the high-temperature mining working face;

[0014] Step 2: During the operation of the integrated dust removal-cooling system, the laser particle size sensor, dust concentration sensor and temperature sensor in the sensor monitoring device monitor the dust particle growth diameter D in the humidification growth unit, the ambient dust concentration C and ambient temperature T of the high-temperature mining working face in real time, and feed the data back to the fuzzy PID control device;

[0015] Step 3: When any monitoring data deviates from the ideal value set by the system, the fuzzy PID control device determines the error e between the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face and the ambient temperature T and the ideal value. D 、e C 、e T and the error change rate ε D , ε C , ε T Then, fuzzification processing is performed, fuzzy reasoning is performed according to the total fuzzy rule R* in the knowledge base, and finally defuzzification is performed to obtain the incremental values ​​of the proportional, integral and differential factors of the PID algorithm corresponding to the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face and the ambient temperature T, which are ΔK respectively. pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔK dC , ΔK pT , ΔK iT , ΔK dTThen, the weighted average method is used to superimpose the value of the previous cycle and substitute it into the fuzzy PID control device to calculate the output values ​​of the environmental variables at this moment D(t), C(t) and T(t). Then, the fuzzy PID control device adjusts the humidifier power, cold mist pressure and chiller power based on the conversion program between the built-in environmental variables D, C, T and the humidifier output power p1, cold mist output pressure P, and chiller output power p2, thereby realizing adaptive regulation of the dust removal and cooling device.

[0016] Step 4. When the fuzzy PID control device performs adaptive regulation according to the input monitoring data, the sensor monitoring device continuously and in real time feeds back the changes of the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face to the fuzzy PID control device. The fuzzy PID control device continues to repeat the regulation process of step 3 until the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face all reach their respective ideal values. At this time, the fuzzy PID control device stops the regulation process and keeps the dust removal and cooling device running in the current state. The sensor monitoring device continues to perform real-time monitoring and feeds back the monitoring data to the fuzzy PID control device, thereby realizing continuous dust removal and cooling of the air environment of the high-temperature mining working face.

[0017] Furthermore, the knowledge base includes a database and a rule base, wherein the database includes membership functions of input values ​​and output increments, and the rule base includes total fuzzy rules R* given based on expert knowledge and operational experience.

[0018] Further, the specific process in step 3 is: first, the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face and the ambient temperature T are respectively calculated to have an error e from the ideal value. D 、e C 、e T and the error change rate ε D , ε C , ε T After quantization factor After fuzzification, it is converted into a domain value; fuzzy reasoning is performed through the Mamdni method, and the membership matrices of the error and error change rate corresponding to the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face, and the ambient temperature T are respectively merged, and then synthesized with the total fuzzy rule R* in the above rule base; then the operation result is reflected on the output membership function, and the domain value of the fuzzy subset corresponding to the output value is obtained through the maximum membership average method; finally, the domain value is calculated based on the proportional factor K u Converted into output value ΔK pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔKdC , ΔK pT , ΔK iT , ΔK dT , thus obtaining the incremental values ​​of the proportional, integral and differential factors of the PID algorithm corresponding to the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face;

[0019] According to the above output value, the updated K is obtained by superimposing it with the value of the previous cycle through the weighted average method and substituting it into the fuzzy PID control device for calculation. pD , K iD , K dD , K pC , K iC , K dC , K pT , K iT , K dT The value of

[0020] Use the following PID calculation formula for calculation:

[0021]

[0022] The output values ​​of the environmental variables at that moment are obtained through the above calculations. Then, the fuzzy PID control device adjusts the humidifier power, cold mist pressure and chiller power based on the conversion model between the built-in environmental variables D, C, T and the humidifier output power p1, cold mist output pressure P and chiller output power p2, thereby realizing adaptive regulation of the dust removal and cooling device.

[0023] Compared with the prior art, the present invention adopts a combination of a sensor monitoring device, a fuzzy PID control device and a dust removal and cooling device, which has the following advantages:

[0024] 1. The dust removal and cooling device of the present invention sucks in the high-temperature dust-laden airflow from the surrounding environment, and then passes through the primary dust removal of the humidification growth unit, the cold mist cooling and secondary dust removal of the cold mist dust reduction unit, and the airflow purification and tertiary dust removal of the dust filtering and mist elimination unit in sequence, thereby simultaneously cooling and removing dust from the high-temperature dust-laden airflow, so that the high-temperature dust-laden airflow has the advantages of less dust escape, high dust removal-cooling efficiency, low water consumption and low energy consumption.

[0025] 2. In the present invention, a sensor monitoring device is used to collect the required environmental data in real time during the operation of the cooling and dust removal device, and feed it back to the fuzzy PID control device. The fuzzy PID control method introduced by the fuzzy PID control device performs analysis and processing according to the adopted environmental data. If any monitoring data deviates from the ideal value set by the system, the corresponding control parameters are obtained, and the humidifier power, cold mist pressure and chiller power are adjusted according to the control parameters to achieve adaptive regulation of the dust removal and cooling device. Therefore, when the air environment of the underground working face changes, the system of the present invention can adaptively adjust the intensity of cooling and dust removal in real time, thereby achieving continuous cooling and dust removal under different conditions for the high-temperature mining working face, and can achieve the desired effect. The entire adaptive regulation process not only has a strong anti-interference ability, but also reduces the dependence of equipment parameter adjustment on people, and has the advantages of strong adaptability and high degree of automation.

[0026] 3. In the present invention, the high-pressure gas used for the negative pressure produced by the medium-pressure wind injection unit and the cold mist produced by the cold mist dust reduction unit are both derived from the underground air supply pipeline, and the water required for the cold mist produced by the cold mist dust reduction unit and the humidification growth unit for humidification are both derived from the underground water supply pipeline. There is no need to lay separate air supply and water supply pipelines, which is convenient for installation and use. Moreover, efficient suction of dust-containing high-temperature airflow can be achieved without consuming electric energy, which effectively reduces the overall energy consumption of the system while improving the inherent safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the overall flow chart of the working method in the present invention;

[0028] Figure 2 It is a schematic diagram of the overall structure of the integrated dust removal-cooling system in the present invention.

[0029] In the figure: 1. compressed air ejection unit; 2. humidification growth unit; 3. cold mist dust reduction unit; 4. dust filtering and mist elimination unit; 5. collector; 6. annular combination ejector; 7. first solenoid valve; 8. first filter; 9. humidifier; 10. second solenoid valve; 11. second filter; 12. nozzle; 13. third solenoid valve; 14. third filter; 15. chiller; 16. fourth solenoid valve; 17. fourth filter; 18. filtering device; 19. sewage outlet; 20. fuzzy PID control device; 21. laser particle size sensor; 22. dust concentration sensor; 23. temperature sensor; 24. humidifier power converter; 25. chiller power converter; 26. pressure regulating valve. DETAILED DESCRIPTION

[0030] The present invention will be further described below.

[0031] like Figure 2As shown, an integrated dust removal and cooling system for a high-temperature mining working face in a mine includes a sensor monitoring device, a fuzzy PID control device and a dust removal and cooling device;

[0032] The dust removal and cooling device comprises a compressed air ejection unit 1, a humidification growth unit 2, a cold mist dust reduction unit 3 and a dust filtering and mist elimination unit 4; the compressed air ejection unit 1 comprises an air inlet tube, a collector 5 and an annular combination ejector 6, the collector 5 is installed at one end of the air inlet tube, and is used to collect the surrounding high-temperature dust-containing wind flow and then flow it into the air inlet tube, the annular combination ejector 6 is installed in the air inlet tube, and its injection direction is toward the other end of the air inlet tube, the air inlet of the annular combination ejector 6 is connected to the underground air supply pipeline through a first air pipe, and a first solenoid valve 7 is installed on the first air pipe to control the on and off of the first air pipe, and the high-pressure gas is ejected through the annular combination ejector 6 to form a negative pressure in the air inlet pipe, thereby guiding the high-temperature dust-containing wind flow to enter from one end of the air inlet pipe; the humidification growth unit Element 2 includes a first cavity and a humidifier 9, one end of the first cavity is connected to the other end of the air inlet tube, for allowing high-temperature dust-laden wind flow to enter; the humidifier 9 is installed in the first cavity, and the water inlet of the humidifier 9 is connected to the underground water supply pipeline through a first water pipe, and the first water pipe is provided with a second solenoid valve 10, for controlling the on-off of the first water pipe, and the first cavity is continuously humidified by the humidifier 9 to form a water supersaturated environment, so that the dust particles in the high-temperature dust-laden wind flow continue to grow, condense and settle in this environment; the cold mist dust reduction unit 3 includes a second cavity, a chiller 15 and a plurality of nozzles 12, one end of the second cavity is connected to the other end of the first cavity, for introducing the wind flow treated by the first cavity; the plurality of nozzles 12 are arranged in the second cavity, and the plurality of Each nozzle 12 is connected to the cold mist pipeline, the chiller 15 is installed outside the second cavity, and the water inlet of the chiller 15 is connected to the underground water supply pipeline through the second water pipe, so that the water in the underground water supply pipeline enters the chiller 15 for cooling and forms low-temperature water; a three-way joint is installed at one end of the cold mist pipeline, and the two ports of the three-way joint are respectively connected to the underground air supply pipeline and the water outlet of the chiller 15 through the pipeline, and a third solenoid valve 13 is installed between the three-way joint and the underground air supply pipeline for controlling the on-off of the three-way joint and the underground air supply pipeline; a fourth solenoid valve 16 is installed on the second water pipe for controlling the on-off of the second water pipe; the high-pressure gas in the underground air supply pipeline and the low-temperature water generated by the chiller 15 enter the cold mist pipeline through the three-way joint to mix, and are discharged from each nozzle The nozzle sprays low-temperature air-water cold mist to cool the wind flow in the second cavity and reduce dust again; a pressure regulating valve 26 is installed on the cold mist pipeline to control the pressure of the low-temperature air-water cold mist sprayed by the nozzle 12; the dust filtering and mist elimination unit 4 includes a third cavity and a filter device 18, one end of the third cavity is connected to the other end of the second cavity, and is used to introduce the wind flow treated by the second cavity; a sewage outlet 19 is opened at the bottom of the third cavity, and the filter device 18 is installed in the third cavity and covers a certain cross-section of the third cavity. The filter device 18 filters the passing wind flow for dust removal and moisture absorption, and discharges the wind flow from the other end of the third cavity after completion; the air inlet pipe, the first cavity, the second cavity and the third cavity are all coaxially connected in sequence; it is convenient for the wind flow to pass smoothly to achieve cooling and dust removal.

[0033] The sensor monitoring device includes a laser particle size sensor 21, a dust concentration sensor 22 and a temperature sensor 23. The laser particle size sensor 21 is installed in the first cavity to monitor the growth diameter of the dust particles in the first cavity; the dust concentration sensor 22 and the temperature sensor 23 are both installed in the surrounding environment to monitor the ambient dust concentration and ambient temperature respectively.

[0034] The fuzzy PID control device 20 is connected to the laser particle size sensor 21, the dust concentration sensor 22, the temperature sensor 23, the first solenoid valve 7, the second solenoid valve 10, the third solenoid valve 13, the fourth solenoid valve 16, the pressure regulating valve 26, the chiller 15 and the humidifier 9, and is used to control the first solenoid valve 7, the second solenoid valve 10, the third solenoid valve 13, the fourth solenoid valve 16, the chiller 15 and the humidifier 9 to start dust removal and cooling, and receives data fed back by the laser particle size sensor 21, the dust concentration sensor 22 and the temperature sensor 23 for analysis and processing, and then adjusts the power of the humidifier 23 and the low-temperature water temperature generated by the chiller 15 through the humidifier power converter and the chiller power converter respectively, and at the same time adjusts the pressure of the low-temperature gas-water mist by controlling the pressure regulating valve 26.

[0035] As an improvement of the present invention, the filtering device 18 is composed of multiple filtering layers; the first air pipe is equipped with a first filter 8, the first water pipe is equipped with a second filter 11, a third filter 14 is installed between the three-way joint and the underground air supply pipeline, and the second water pipe is equipped with a fourth filter 17. By setting up multiple filtering layers, the adsorption and purification effect of the final exhaust air flow can be guaranteed, and by adding multiple filters, impurities contained in the underground air supply pipeline and the underground water supply pipeline can be prevented from entering the system with gas or water, ensuring the stable operation of the system in cooling and dust removal.

[0036] like Figure 1 As shown, the working method of the integrated dust removal-cooling system for the high-temperature mining working face of the mine is as follows:

[0037] Step 1, install the integrated dust removal-cooling system on the return air or downwind side of the high-temperature mining working face in the mine where dust removal and cooling are required; start the first solenoid valve 7, the second solenoid valve 13, the third solenoid valve 14, the fourth solenoid valve 16, the chiller 15 and the humidifier 9, and the high-temperature dust-laden wind flow in the surrounding environment is sucked in by the negative pressure of the compressed wind injection unit 1, and the high-temperature dust-laden wind flow first enters the water-saturated environment formed by the humidification growth unit 2, so that the dust particles contained in it continue to grow, condense and settle in this environment, and partially settle under the action of gravity, thereby realizing primary dust removal; the wind flow after primary dust removal enters the cold mist dust reduction unit 3, and multiple nozzles 12 in the unit continuously spray high The ultra-fine cold mist is formed by the joint action of the compressed air flow and the low-temperature water flow. The ultra-fine cold mist is mixed with the wind flow in the cold mist dust reduction unit for heat exchange and evaporation, thereby cooling the wind flow. At the same time, the dust agglomerates further grow and condense in the environment, and the dust agglomerates are also settled in the process of collision and interception with the droplets, thereby achieving cooling and secondary dust removal; the wind flow after cooling and secondary dust removal finally enters the dust filtering and mist elimination unit 4, wherein the filter device 18 adsorbs and filters the remaining dust particles and cold mist droplets in the wind flow, thereby achieving wind flow purification and tertiary dust removal, and finally discharges the low-temperature and purified wind flow from the dust filtering and mist elimination unit 4 to remove dust and cool the air environment of the high-temperature mining working face;

[0038] Step 2: During the operation of the integrated dust removal-cooling system, the laser particle size sensor 21, the dust concentration sensor 22 and the temperature sensor 23 in the sensor monitoring device monitor the dust particle growth diameter D in the humidification growth unit 2, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face in real time, and feed the data to the fuzzy PID control device 20;

[0039] Step 3: When any monitoring data deviates from the ideal value set by the system, the fuzzy PID control device 20 determines the error e between the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face and the ambient temperature T and the ideal value. D 、e C 、e T and the error change rate ε D , ε C , ε T , select the knowledge base which includes a database and a rule base, wherein the database includes the membership function of the input value and the output increment, and the rule base includes the total fuzzy rule R* given based on expert knowledge and operation experience, specifically:

[0040] The fuzzy sets about input and output and their domain and membership functions corresponding to the fuzzy subsets are embedded in the database; since the increase in the diameter of dust particles in the integrated dust removal-cooling system makes it easier to reach the expected dust reduction target, the error e about the dust particle growth diameter D is D and the error change rate ε DThe fuzzy sets are defined as: {negative large, negative medium, negative small, zero, positive small, positive medium, positive large} = {NB, NM, NS, ZO, PS, PM, PB}, and the domain is: {-3, -2, -1, 0, 1, 2, 3}, and its output ΔK pD , ΔK iD , ΔK dD The fuzzy set of is also defined as: {negative large, negative medium, negative small, zero, positive small, positive medium, positive large} = {NB, NM, NS, ZO, PS, PM, PB}, and the domain is: {-3, -2, -1, 0, 1, 2, 3};

[0041] The lower the ambient dust concentration, the more it meets the expected target. Therefore, the error e about the dust concentration C C The fuzzy set is defined as: {zero negative, positive small, positive medium, positive large} = {ZN, PS, PM, PB}, the domain is: {0, 1, 2, 3}, the error change rate ε C The fuzzy set is defined as: {negative large, negative medium, negative small, zero, positive small, positive medium, positive large} = {NB, NM, NS, ZO, PS, PM, PB}, and the domain is: {-3, -2, -1, 0, 1, 2, 3}, and its output ΔK pC , ΔK iC , ΔK dC The fuzzy sets of are defined as: {zero, positive small, positive middle, positive large} = {ZO, PS, PM, PB}, and the domain is: {0, 1, 2, 3};

[0042] Since the working surface temperature should not be too high or too low, it is necessary to ensure that the temperature is maintained at a certain value. Therefore, the error e of the working surface temperature T T and the error change rate ε T The fuzzy set is defined as: {negative large, negative medium, negative small, zero, positive small, positive medium, positive large} = {NB, NM, NS, ZO, PS, PM, PB}, and the domain is: {-3, -2, -1, 0, 1, 2, 3}, and its output ΔK pT , ΔK iT , ΔK dT The fuzzy sets of are defined as: {negative large, negative medium, negative small, zero, positive small, positive medium, positive large} = {NB, NM, NS, ZO, PS, PM, PB}, and the domain is: {-3, -2, -1, 0, 1, 2, 3};

[0043] The above letters, "P" stands for "positive", "N" stands for "negative", "Z" and "ZO" stand for "zero", "S" stands for "small", "M" stands for "medium", and "B" stands for "large";

[0044] For the input error e D 、e C 、e Tand the error change rate ε D , ε C , ε T , the meaning of the elements in the fuzzy set is described as: "negative large" means "the error value is negative and the absolute value is large" or "the error change is negative and the amplitude is large", "negative medium" means "the error value is negative and the absolute value is moderate" or "the error change is negative and the amplitude is moderate", "negative small" means "the error value is negative and the absolute value is small" or "the error change is negative and the amplitude is small", "zero negative" means "the error value is less than or equal to zero" or "the error change rate is less than or equal to zero", "zero" means "the error is zero" or "the error change rate is zero", "zero positive" means "the error value is greater than or equal to zero" or "the error change rate is greater than or equal to zero", "positive small" means "the error value is positive and the absolute value is large" or "the error change is positive and the amplitude is small", "positive medium" means "the error value is positive and the absolute value is moderate" or "the error change is positive and the amplitude is moderate", "positive large" means "the error value is positive and the absolute value is large" or "the error change is positive and the amplitude is large";

[0045] For the output ΔK pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔK dC , ΔK pT , ΔK iT , ΔK dT "Negative large" means "the output value needs to be reduced to a large extent", "negative medium" means "the output value needs to be reduced to a moderate extent", "negative small" means "the output value needs to be reduced to a small extent", "zero" means "the output value remains unchanged from the previous cycle", "positive small" means "the output value needs to be increased to a small extent", "positive medium" means "the output value needs to be increased to a moderate extent", and "positive large" means "the output value needs to be increased to a large extent"; in addition, it is explained that the more elements of the fuzzy set subset, the more accurate the adjustment of the PID parameters.

[0046] The rule base is the fuzzy rules R corresponding to e and ε in different fuzzy set combinations based on expert knowledge or operational experience. i , generally described as: IF A and B then C;

[0047] The method given in this paper is about e D and ε D The corresponding output parameter fuzzy rules are as follows:

[0048] For ΔK pD ,

[0049] X D1 :IF eD is ZN and ε D is NB then ΔK pD is PB,

[0050] ……

[0051] X D2 :IF e D is ZP and ε D is ZO then ΔK pD is ZO,

[0052] ……

[0053] X D49 :IF e D is PB and ε D is PB then ΔK pD is NB;

[0054] For ΔK iD ,

[0055] Y D1 :IF e D is NB and ε D is NB then ΔK iD is NB,

[0056] ……

[0057] Y D2 :IF e D is ZO and ε D is ZO then ΔK iD is ZO,

[0058] ……

[0059] Y D49 :IF e D is PB and ε D is PB then ΔK iD is PB;

[0060] For ΔK dD ,

[0061] Z D1 :IF e C is NB and ε C is NB then ΔK dD is PS,

[0062] ……

[0063] Z D2 :IF e C is ZO andε C is ZO thenΔK dD is NS,

[0064] …

[0065] Z D49 :IF e C is PB and ε C is PB thenΔK dD is PB;

[0066] Similarly, the method given about e C , ε C 、e T and ε T The corresponding output parameters have similar fuzzy rules. All fuzzy relations can construct 9 fuzzy relation matrices They constitute the total fuzzy rules in the system, denoted by R * .

[0067] According to the total fuzzy rule R* in the knowledge base, the fuzzy reasoning and defuzzification process is carried out, specifically:

[0068] First, the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face, and the ambient temperature T are each different from the ideal value. D 、e C 、e T and the error change rate ε D , ε C , ε T After quantization factor The fuzzy value is converted into a domain value; according to the membership function corresponding to each input variable in the database, the membership of each fuzzy subset under the corresponding domain value is obtained;

[0069] Quantization factor K e , K ε Specifically expressed as:

[0070] Among them, m and n represent the error e D 、e C 、e T and the error change rate ε D , ε C , ε T Corresponding to the maximum integer value in their respective domains, under the domain conditions, m = n = 3, and e h and e lThey represent the highest and lowest limits of the error in the actual output, respectively. h and ε l Respectively represent the upper and lower limits of the error change rate;

[0071] In addition, the scaling factor is K u The domain value output by the fuzzy algorithm after calculation is converted into a clear value ΔK by the proportional factor pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔK dC , ΔK pT , ΔK iT , ΔK dT Provide PID algorithm for the next step of calculation and processing;

[0072] Scaling factor K u Specifically expressed as:

[0073] Where u = {ΔK pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔK dC , ΔK pT , ΔK iT , ΔK dT}, L represents the output value ΔK pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔK dC , ΔK pT , ΔK iT , ΔK dT Corresponding to the maximum integer value in each domain, under the domain condition, L = 3, u h and u l They respectively represent the highest and lowest limits that the above output values ​​can take in actual output;

[0074] Through the Mamdni method, fuzzy reasoning is performed to merge the membership matrices of the error and error change rate corresponding to the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face, and the ambient temperature T, and then combine them with the fuzzy relationship matrix in the above rule base. Perform synthesis operations respectively to obtain the membership corresponding to different output fuzzy subsets, obtain the output curve according to the membership function of the relevant output established in the database, and use the maximum membership average method to obtain the domain value under the fuzzy subset. Finally, the domain value is calculated based on the proportional factor K u Converted into output value ΔK pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔK dC , ΔK pT , ΔK iT , ΔK dT , thus obtaining the incremental values ​​of the proportional, integral and differential factors of the PID algorithm corresponding to the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face;

[0075] According to the above output value, the updated K is obtained by superimposing the value of the previous cycle with the weighted average method and substituting it into the fuzzy PID control device 20 for calculation. pD , K iD , K dD , K pC , K iC , K dC , K pT , K iT , K dT The value of is:

[0076]

[0077] Where K pD1 , K iD1 , K dD1 , K pc1 , K ic1 , K dc1 , K pT1 , K iT1 , K dT1 They are the parameter values ​​calculated by PID in the previous cycle;

[0078] Use the following PID calculation formula for calculation:

[0079]

[0080] The output values ​​of the environmental variables at that moment are obtained through the above calculations. Then, the fuzzy PID control device 20 adjusts the humidifier power, spray pressure and chiller power based on the conversion program between the built-in environmental variables D, C, T and the humidifier output power p1, spray output pressure P and chiller output power p2, thereby realizing adaptive control of the dust removal and cooling device.

[0081] The conversion model between environmental variables (D, C, T) and device operating parameters (p1, P, p2) is as follows, where α i , β i , γ i is the coefficient of the environmental variable corresponding to different power exponents.

[0082]

[0083] Step 4. When the fuzzy PID control device 20 performs adaptive regulation according to the input monitoring data, the sensor monitoring device continuously and in real time feeds back the changes of the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face to the fuzzy PID control device 20. The fuzzy PID control device 20 continues to repeat the regulation process of step 3 until the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face all reach their respective ideal values. At this time, the fuzzy PID control device 20 stops the regulation process and keeps the dust removal and cooling device running in the current state. The sensor monitoring device continues to perform real-time monitoring and feeds back the monitoring data to the fuzzy PID control device 20. If any monitoring data deviates from the ideal value set by the system, the fuzzy PID control device 20 continues to repeat the regulation process of step 3, thereby achieving continuous dust removal and cooling of the air environment of the high-temperature mining working face.

[0084] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An integrated dust removal and cooling system for high-temperature mining working faces in mines, characterized in that: It includes sensor monitoring device, fuzzy PID control device and dust removal and cooling device; The dust removal and cooling device includes a compressed air ejection unit, a humidification growth unit, a cold mist dust reduction unit and a dust filtering and mist elimination unit; the compressed air ejection unit includes an air inlet tube, a collector and an annular combination ejector. The collector is installed at one end of the air inlet tube and is used to collect the surrounding high-temperature dust-containing wind flow and then flow it into the air inlet tube. The annular combination ejector is installed in the air inlet tube, and its injection direction is toward the other end of the air inlet tube. The air inlet of the annular combination ejector is connected to the downhole air supply pipeline through a first air pipe. The first air pipe is equipped with a first solenoid valve for controlling the on and off of the first air pipe. The high-pressure gas is ejected through the annular combination ejector to form a negative pressure in the air inlet pipe, thereby guiding the high-temperature dust-containing wind flow from the air inlet pipe one end of the air inlet is connected to the other end of the air inlet cylinder, so as to allow the high-temperature dust-laden airflow to enter; the humidifier is installed in the first cavity, and the water inlet of the humidifier is connected to the underground water supply pipeline through the first water pipe, and the first water pipe is provided with a second solenoid valve for controlling the on-off of the first water pipe, and the first cavity is continuously humidified by the humidifier to form a water supersaturated environment, so that the dust particles in the high-temperature dust-laden airflow continue to grow, condense and settle in the environment; the cold mist dust reduction unit comprises a second cavity, a chiller and a plurality of nozzles, and one end of the second cavity is connected to the other end of the first cavity, so as to introduce the first cavity into the airflow; the second cavity is connected to the other end of the first cavity, so as to allow the high-temperature dust-laden airflow to enter the airflow; the humidifier is installed in the first cavity, and the water inlet of the humidifier is connected to the underground water supply pipeline through the first water pipe, and the first water pipe is provided with a second solenoid valve for controlling the on-off of the first water pipe, and the first cavity is continuously humidified by the humidifier to form a water supersaturated environment, so that the dust particles in the high-temperature dust-laden airflow continue to grow, condense and settle in the environment; the cold mist dust reduction unit comprises a second cavity, a chiller and a plurality of nozzles, and one end of the second cavity is connected to the other end of the first cavity, so as to introduce the first cavity into the airflow; the cold mist dust reduction unit comprises a second cavity, a chiller and a plurality of nozzles, and ... a plurality of nozzles are arranged in the second cavity, and the plurality of nozzles are connected to the cold mist pipeline, the chiller is installed outside the second cavity, and the water inlet of the chiller is connected to the underground water supply pipeline through the second water pipe, so that the water in the underground water supply pipeline enters the chiller for cooling and forms low-temperature water; a three-way joint is installed at one end of the cold mist pipeline, and the two ports of the three-way joint are respectively connected to the underground air supply pipeline and the water outlet of the chiller through the pipeline, and a third solenoid valve is installed between the three-way joint and the underground air supply pipeline for controlling the on-off of the three-way joint and the underground air supply pipeline; a fourth solenoid valve is installed on the second water pipe for controlling the on-off of the second water pipe; the high-pressure gas in the underground air supply pipeline The low-temperature water generated by the body and the chiller enters the cold mist pipeline through a three-way joint to mix, and sprays low-temperature air-water cold mist from each nozzle to cool the airflow in the second cavity and perform secondary dust reduction; a pressure regulating valve is installed on the cold mist pipeline to control the pressure of the low-temperature air-water cold mist sprayed from the nozzle; the dust filtering and mist elimination unit includes a third cavity and a filtering device, one end of the third cavity is connected to the other end of the second cavity, and is used to introduce the airflow treated by the second cavity; a sewage outlet is provided at the bottom of the third cavity, the filtering device is installed in the third cavity and covers a certain cross-section of the third cavity, the filtering device filters the passing airflow for dust removal and moisture absorption, and discharges the airflow from the other end of the third cavity after completion; The sensor monitoring device includes a laser particle size sensor, a dust concentration sensor and a temperature sensor. The laser particle size sensor is installed in the first cavity to monitor the growth diameter of the dust particles in the first cavity. The dust concentration sensor and the temperature sensor are installed in the surrounding environment to monitor the ambient dust concentration and ambient temperature respectively. The fuzzy PID control device is connected to the laser particle size sensor, the dust concentration sensor, the temperature sensor, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the pressure regulating valve, the chiller and the humidifier, and is used to control the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the chiller and the humidifier to start dust removal and cooling, and receives the data fed back by the laser particle size sensor, the dust concentration sensor and the temperature sensor for analysis and processing, and then adjusts the power of the humidifier and the low-temperature water temperature generated by the chiller through the humidifier power converter and the chiller power converter respectively, and at the same time adjusts the pressure of the low-temperature air-water mist by controlling the pressure regulating valve.

2. The integrated dust removal and cooling system for high-temperature mining working face in a mine according to claim 1 is characterized in that: The filtering device is composed of multiple filtering layers; a first filter is installed on the first air pipe, a second filter is installed on the first water pipe, a third filter is installed between the three-way joint and the underground air supply pipeline, and a fourth filter is installed on the second water pipe.

3. The integrated dust removal and cooling system for high-temperature mining working face in a mine according to claim 1 is characterized in that: The air inlet cylinder, the first cavity, the second cavity and the third cavity are all coaxially connected in sequence.

4. A working method of the integrated dust removal and cooling system for high-temperature mining working face in a mine according to any one of claims 1 to 3, characterized in that: The specific steps are: Step 1. Install the integrated dust removal and cooling system on the return air or downwind side of the high-temperature mining face in the mine where dust removal and cooling are required; start the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the chiller and the humidifier, and the high-temperature dust-laden airflow in the surrounding environment is sucked in by the negative pressure of the compressed wind injection unit. The high-temperature dust-laden airflow first enters the water-saturated environment formed by the humidification growth unit, so that the dust particles contained in it continue to grow, condense and settle in this environment, and partially settle under the action of gravity, thereby realizing primary dust removal; the airflow after primary dust removal enters the cold mist dust reduction unit, and multiple nozzles in the unit continuously spray high-pressure airflow and low Ultrafine cold mist is formed under the joint action of warm water flow. The ultrafine cold mist is mixed with wind flow in the cold mist dust reduction unit for heat exchange and evaporation, thereby cooling the wind flow. At the same time, dust agglomerates further grow and condense in the environment, and dust agglomerates are also settled in the process of collision and interception with fog droplets, realizing cooling and secondary dust removal; the wind flow after cooling and secondary dust removal finally enters the dust filtering and mist elimination unit, and the filtering device therein absorbs and filters the remaining dust particles and cold mist droplets in the wind flow, realizing wind flow purification and tertiary dust removal, and finally discharges low-temperature and purified wind flow from the dust filtering and mist elimination unit to remove dust and cool the air environment of the high-temperature mining working face; Step 2: During the operation of the integrated dust removal-cooling system, the laser particle size sensor, dust concentration sensor and temperature sensor in the sensor monitoring device monitor the dust particle growth diameter D in the humidification growth unit, the ambient dust concentration C and ambient temperature T of the high-temperature mining working face in real time, and feed the data back to the fuzzy PID control device; Step 3: When any monitoring data deviates from the ideal value set by the system, the fuzzy PID control device determines the error e between the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face and the ambient temperature T and the ideal value. D 、e C 、e T and the error change rate ε D , ε C , ε T Then, fuzzification processing is performed, fuzzy reasoning is performed according to the total fuzzy rule R* in the knowledge base, and finally defuzzification is performed to obtain the incremental values ​​of the proportional, integral and differential factors of the PID algorithm corresponding to the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face and the ambient temperature T, which are ΔK respectively. pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔK dC , ΔK pT , ΔK iT , ΔK dT , and then the weighted average method is used to superimpose the value of the previous cycle and substitute it into the fuzzy PID control device to calculate the output values ​​of the environmental variables at this moment D(t), C(t) and T(t). Then the fuzzy PID control device adjusts the humidifier power, cold mist pressure and chiller power based on the conversion program between the built-in environmental variables D, C, T and the humidifier output power p1, cold mist output pressure P, and chiller output power p2, so as to realize adaptive control of the dust removal and cooling device; Step 4. When the fuzzy PID control device performs adaptive regulation according to the input monitoring data, the sensor monitoring device continuously and in real time feeds back the changes of the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face to the fuzzy PID control device. The fuzzy PID control device continues to repeat the regulation process of step 3 until the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face all reach their respective ideal values. At this time, the fuzzy PID control device stops the regulation process and keeps the dust removal and cooling device running in the current state. The sensor monitoring device continues to perform real-time monitoring and feeds back the monitoring data to the fuzzy PID control device, thereby realizing continuous dust removal and cooling of the air environment of the high-temperature mining working face.

5. The working method of the integrated dust removal and cooling system for high-temperature mining working face in a mine according to claim 4, characterized in that: The knowledge base includes a database and a rule base, wherein the database includes membership functions of input values ​​and output increments, and the rule base includes total fuzzy rules R* given based on expert knowledge and operational experience.

6. The working method of the integrated dust removal and cooling system for high-temperature mining working face in a mine according to claim 4, characterized in that: The specific process of step 3 is: first, the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face and the ambient temperature T are calculated based on their respective deviations from the ideal values. D 、e C 、e T and the error change rate ε D , ε C , ε T After quantization factor After fuzzification, it is converted into a domain value; fuzzy reasoning is performed through the Mamdni method, and the membership matrices of the error and error change rate corresponding to the dust particle growth diameter D, the ambient dust concentration C of the high-temperature mining working face, and the ambient temperature T are respectively merged, and then synthesized with the total fuzzy rule R* in the above rule base; then the operation result is reflected on the output membership function, and the domain value of the fuzzy subset corresponding to the output value is obtained through the maximum membership average method; finally, the domain value is calculated based on the proportional factor K u Converted into output value ΔK pD , ΔK iD , ΔK dD , ΔK pC , ΔK iC , ΔK dC , ΔK pT , ΔK iT , ΔK dT , thus obtaining the incremental values ​​of the proportional, integral and differential factors of the PID algorithm corresponding to the dust particle growth diameter D, the ambient dust concentration C and the ambient temperature T of the high-temperature mining working face; According to the above output value, the updated K is obtained by superimposing it with the value of the previous cycle through the weighted average method and substituting it into the fuzzy PID control device for calculation. pD , K iD , K dD , K pC , K iC , K dC , K pT , K iT , K dT The value of Use the following PID calculation formula for calculation: The output values ​​of the environmental variables at that moment are obtained through the above calculations. Then, the fuzzy PID control device adjusts the humidifier power, cold mist pressure and chiller power based on the conversion program between the built-in environmental variables D, C, T and the humidifier output power p1, cold mist output pressure P and chiller output power p2, thereby realizing adaptive regulation of the dust removal and cooling device.

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