Multi-device multi-parameter coupling intelligent control system for dust prevention system of fully mechanized coal mining face

Abstract

The present application relates to a kind of multi-device multi-parameter coupling intelligent control system for fully mechanized coal face dust prevention system, belong to coal mine dust control technical field.The system multi-device coupling central control, single-device multi-parameter control module and multiple dust reduction equipment.Dust reduction equipment is aimed at different dust sources, such as coal cutter cutting coal, hydraulic support moving frame, etc.Single-device multi-parameter control module can control corresponding equipment parameters, and communicate with central control.Multiple device coupling central control combines dust concentration and personnel location information, dynamically adjusts each device parameter, and sets three types of dust concentration control target.Through building the dust reduction efficiency and parameter relationship model of different dust sources, intelligent control is realized.For example, for coal cutter drum cutting coal dust source, corresponding model is established respectively.

Description

Technical Field

[0001] This invention belongs to the field of coal mine dust control technology, and relates to a multi-device, multi-parameter coupled intelligent control system for dust prevention systems in fully mechanized mining faces. Background Technology

[0002] In coal mining, the fully mechanized longwall face is the core area of ​​coal production, characterized by a complex working environment and high dust levels. Dust not only seriously affects miners' health, increasing the risk of occupational diseases such as pneumoconiosis, but can also trigger safety accidents such as explosions, posing a serious threat to safe coal mine production. Therefore, dust control at the fully mechanized longwall face is of paramount importance.

[0003] Currently, dust control methods in fully mechanized mining faces mainly include coal seam water injection, spray dust suppression, ventilation dust removal, and personal protective equipment (PPE). Coal seam water injection involves pre-injecting water into the coal seam to increase its moisture content and wettability, thereby reducing dust generation during mining. Spray dust suppression uses a spray device to atomize water, causing dust particles to settle upon contact with the water mist, effectively reducing the concentration of dust in the air. Ventilation dust removal optimizes the ventilation system design to improve ventilation capacity and remove dust from the working face. Personal protective equipment (PPE) involves equipping miners with dust masks and other protective gear to reduce the direct harm of dust to the human body.

[0004] In terms of control methods, traditional dust control systems for fully mechanized mining faces often employ single-device or simple parameter control. For example, a spray dust suppression system may control the opening and closing of the spray based solely on the dust concentration at the working face, while a coal seam water injection system may adjust its injection parameters based solely on the water injection effect on the coal seam. Although this control method can reduce dust concentration to some extent, it has significant limitations.

[0005] First, single-device or simple parameter control cannot achieve coordinated operation between multiple devices. In fully mechanized mining faces, equipment such as coal mining machines, hydraulic supports, and conveyors generate dust during operation. Traditional dust control systems often cannot coordinate and adjust dust suppression equipment according to the operating status of each device and the dust generation situation, resulting in poor dust suppression effects.

[0006] Secondly, simple parameter control cannot adapt to the complex and ever-changing working environment of fully mechanized mining faces. Parameters such as dust concentration, humidity, and temperature at the working face will constantly change as operations proceed, and traditional dust control systems often cannot adjust dust suppression strategies in real time according to these parameter changes, resulting in low dust suppression efficiency.

[0007] Therefore, existing dust control systems for fully mechanized mining faces have significant shortcomings in their control methods, failing to meet the needs of multi-device, multi-parameter coupled regulation, and unable to improve efficiency while saving unnecessary energy consumption. To address this issue, it is necessary to develop a multi-device, multi-parameter coupled intelligent regulation system for fully mechanized mining face dust control systems. This system would integrate multiple sensors and intelligent algorithms to achieve coordinated regulation and precise dust suppression of various dust-reducing devices at the fully mechanized mining face, thereby improving dust control effectiveness and the safety level of the working face. Summary of the Invention

[0008] In view of this, the purpose of the present invention is to provide a multi-device, multi-parameter coupled intelligent control system for dust control systems in fully mechanized mining faces.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces includes: a multi-device coupled central control unit, a single-device multi-parameter control module, and several corresponding dust suppression devices.

[0011] The corresponding dust suppression equipment includes S1 intelligent spray three-dimensional intensive dust suppression equipment for coal mining machines, S2 on-board dust control equipment for coal mining machines, S3 adaptive hydraulic support dust blocking equipment, S4 non-contact automatic spray wetting coal body dust suppression equipment, and S5 full-section water film net dust collection and purification equipment for roadways.

[0012] The single-equipment multi-parameter control module includes a spray dust suppression control module P1, an airborne dust control module P2, a hydraulic support dust blocking control module P3, a coal wetting dust suppression control module P4, and a water film net dust collection control module P5, which are used to control the corresponding equipment.

[0013] Each single-device multi-parameter control module maintains a communication connection with the multi-device coupling central control system, transmits equipment status parameters and environmental parameters to the multi-device coupling central control system, receives control commands from the multi-device coupling central control system, and adjusts the corresponding equipment parameters according to the commands; the multi-device coupling central control system dynamically adjusts the dust reduction parameters of each device in combination with dust concentration C and personnel location information W, so as to intelligently control the dust prevention system of the fully mechanized mining face.

[0014] Furthermore, the multi-device coupled central control system stores the following relationship models: η1 for the dust removal efficiency of the coal cutting machine drum and the corresponding parameters of the equipment; η2 for the dust removal efficiency of the coal dust generated during the lowering and moving of the hydraulic support and the corresponding parameters of the equipment; η3 for the dust removal efficiency of the coal transported in the coal mine and the corresponding parameters of the equipment; and η4 for the dust removal efficiency of the dust generated by the return airflow and the corresponding parameters.

[0015] The multi-device coupled central control system sets several dust concentration control targets, and simultaneously incorporates personnel location information W as an important basis for its dust concentration control. It sets at least three types of control targets, including: respirable dust concentration targets, dust concentration targets in the personnel's vicinity area, and dust concentration targets in uninhabited areas.

[0016] The intelligent control process of multi-device coupled central control is as follows:

[0017] The real-time concentration information C at the corresponding dust source is obtained from the corresponding spray dust suppression control module P1, airborne dust control and removal module P2, hydraulic support dust barrier control module P3, coal wetting dust suppression control module P4, and water film net dust collection control module P5, respectively. i And personnel information W i Where i represents the area controlled by the corresponding device, W i =0,1,2, when W i When W = 0, it indicates that there is no human activity in the area and its adjacent areas. The corresponding equipment control parameters and control time are calculated by combining the target dust concentration in the uninhabited area with the corresponding dust removal efficiency relationship model. i When W = 1, it indicates that although there is no human activity in its controlled area, there is human activity in its adjacent area. The corresponding equipment control parameters and control time are calculated by combining the target dust concentration in the adjacent area with the corresponding dust removal efficiency relationship model. i When the value is 3, it indicates that there is human activity in the area. The corresponding equipment control parameters and control time are calculated by combining the target respirable dust concentration with the corresponding dust removal efficiency relationship model.

[0018] Furthermore, the intelligent spray three-dimensional dense dust suppression equipment S1 and the on-board dust removal equipment S2 of the coal mining machine are used to treat the dust generated during the drum cutting of the coal mining machine. The intelligent spray three-dimensional closed dust suppression equipment S1 mainly controls the dust suppression range based on its corresponding spray pressure and the number of spray states that are opened simultaneously. Specifically, in terms of actual control parameters, it controls the particle size of the intelligent spray mist from the coal mining machine. Intelligent spray flow rate of coal mining machine and the speed of intelligent spray mist particles in coal mining machines The S2 onboard dust control and removal equipment for coal mining machines mainly regulates its dust reduction amplitude based on its corresponding spray pressure. Specifically, the control parameters are achieved by controlling the onboard spray jet airflow of the dust control and removal equipment. Airborne spray droplet size Airborne spray flow rate and the velocity of airborne spray droplets Complete the dust reduction adjustment.

[0019] Furthermore, the process of establishing the relationship model η1 between the dust reduction efficiency and various parameters of the coal cutting drum of the coal mining machine is as follows:

[0020] Define input variables:

[0021]

[0022] Define output variables:

[0023]

[0024] Where η1 represents the dust reduction efficiency for the coal cutting dust source of the coal mining machine drum, and α1 is the environmental correction coefficient for the coal cutting dust source of the coal mining machine drum. These are the dust reduction efficiency weighting coefficients for equipment S1 and equipment S2, respectively. and These are the dust collection efficiencies of devices S1 and S2, respectively. The coefficient of the enhanced jet flow effect of device S2. The interaction term is defined as the interaction between the mist particles emitted by devices S1 and S2.

[0025] The dust collection efficiency of equipment S1 and equipment S2 and Determined according to the modified Langmuir formula, it is expressed as:

[0026]

[0027] Where the subscripts S = S1, S2 represent parameters corresponding to different equipment, and ρ represents dust density. S This represents the corresponding fog particle density, and d represents the dust particle size. S Q represents the corresponding mist particle size. S This represents the corresponding mist particle flow rate, v S This represents the corresponding mist particle velocity; based on this, the specific coefficients in the relational model are determined according to the historical dustfall data of the coal cutting dust source of the coal mining machine drum, thereby constructing the corresponding relational model.

[0028] Furthermore, the coal dust generated during the lowering and moving of the hydraulic support is treated by the adaptive hydraulic support dust-blocking device S3. This dust suppression is also primarily achieved by adjusting the spray pressure of the dust-blocking device. Its actual control parameters include the dust-blocking spray ejector airflow. Airborne spray droplet size Airborne spray flow rate and the velocity of airborne spray droplets

[0029] Furthermore, the process of establishing the relationship model η2 between the dust removal efficiency and corresponding parameters of the coal dust generated during the lowering and moving of the hydraulic support is as follows: Input:

[0030]

[0031] Output:

[0032]

[0033] Wherein, α2 is the environmental correction coefficient for the dust source of the hydraulic support column lowering and moving. The coefficient for enhancing the ejector airflow effect. The dust collection efficiency of device S3 is determined according to the modified Langmuir formula, which is expressed as:

[0034]

[0035] Based on this, the specific coefficients in the relational model are determined according to the historical dustfall data of the hydraulic support column lowering and moving dust source, thereby constructing the corresponding relational model.

[0036] Furthermore, the S4 non-contact automatic spray-wetting coal dust suppression device is used to treat dust during coal mine transfer and transportation. Its main function is to control the number of sprayers activated for wetting the coal. and spray opening interval Among them, the number of sprayers turned on This refers to the total number of sprayers activated and the spray activation intervals within the transport corridor during transshipment. This refers to the number of unactivated sprays between every two activated sprays, within the limit on the total number of activated sprays.

[0037] Furthermore, the dust control efficiency during coal mine transshipment and the number of coal seam wetting sprayers activated are related to... and spray opening interval The relational model η3 is expressed as:

[0038]

[0039] in, σ represents the theoretical maximum efficiency of device S4, σ represents the dust diffusion attenuation coefficient, and θ represents the spray wetting depth. The spray coverage is expressed as follows:

[0040]

[0041] Where L represents the total length of the transport channel, and D represents the distance interval between each spray installed along the transport channel;

[0042] The specific coefficients in the relational model are determined based on historical data on dust handling during coal mine transshipment and transportation, thereby constructing the corresponding relational model.

[0043] Furthermore, the S5 full-section water film net dust collection and purification equipment in the roadway is used to treat the dust generated by the return airflow. This is mainly achieved by controlling the pumping pressure of the dust collection net water pump. and the pumping flow rate of the water pump To achieve dust suppression effect control; it determines the relationship between dust collection efficiency η4 and water pump pressure through a fitting method. and the pumping flow rate of the water pump The relationship model η4 is expressed as:

[0044]

[0045] Where a, b, and c are model coefficients determined by fitting the relationship between dust removal efficiency data and parameters based on the influence of historical return airflow.

[0046] Furthermore, an intelligent dust control platform for fully mechanized mining faces was developed on a multi-device coupled central control system. This platform enables real-time simulation and visualization of dust concentration across the entire fully mechanized mining face, including the display of multi-source information on "people, machines, and environment" at the fully mechanized mining face, as well as real-time online display of the operating conditions, technical parameters, single dust reduction efficiency, and overall dust reduction efficiency of dust control equipment.

[0047] The beneficial effects of this invention are as follows:

[0048] This invention integrates multiple targeted dust suppression devices, such as intelligent three-dimensional dense dust suppression equipment for coal mining machines, onboard dust control equipment for coal mining machines, dust blocking equipment for adaptive hydraulic supports, non-contact automatic spraying to wet the coal body for dust suppression, and full-section water film net dust collection and purification equipment for roadways. These devices are specifically designed to treat dust generated from different dust sources in coal mines, such as dust generated by coal mining machine drum cutting, hydraulic support column lowering and moving, coal transfer and transportation, and return airflow. Through the coordinated operation of multiple devices, comprehensive and multi-layered dust suppression coverage is achieved at the fully mechanized mining face, greatly improving dust suppression efficiency, effectively reducing dust concentration within the working face, and improving the working environment.

[0049] Each dust suppression device is equipped with a corresponding multi-parameter control module, which can precisely adjust various parameters of the device according to different working conditions and needs. For example, for the intelligent spray three-dimensional intensive dust suppression device for coal mining machines, parameters such as the particle size, flow rate, and velocity of the intelligent spray mist can be controlled by adjusting the spray pressure and the number of spray states activated simultaneously, in order to achieve the optimal dust suppression effect. This precise control of multiple parameters allows the dust suppression device to better adapt to different dust generation conditions, improving the targeting and effectiveness of dust suppression, and avoiding the problems of poor dust suppression effect or energy waste that may result from adjusting a single parameter.

[0050] This invention also uses a multi-device coupled central control system as its core, enabling dynamic adjustment of dust suppression parameters for each device based on dust concentration and personnel location information. During coal mine production, dust concentration and personnel location are constantly changing. By acquiring this information in real time, the system automatically adjusts the operating parameters of the dust suppression equipment to ensure optimal dust suppression under various working conditions. For example, when personnel locations change, the system can promptly adjust the parameters of the dust suppression equipment in the corresponding area, ensuring that the dust concentration in the personnel activity area remains within a safe range.

[0051] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0052] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0053] Figure 1 This is a schematic diagram of the structure of a multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces, according to an embodiment of the present invention. Detailed Implementation

[0054] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0055] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0056] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0057] Please see Figure 1 This is a multi-device, multi-parameter coupled intelligent control system for dust control systems in fully mechanized mining faces.

[0058] Example

[0059] This embodiment first describes the specific setup of a multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces, such as... Figure 1 As shown, it includes at least: a multi-device coupling central control, a single-device multi-parameter control module, and several corresponding dust suppression devices. The corresponding dust suppression devices include a coal mining machine intelligent spray three-dimensional dense dust suppression device S1, a coal mining machine onboard dust control device S2, an adaptive hydraulic support dust blocking device S3, a non-contact automatic spray wetting coal body dust suppression device S4, and a roadway full-section water film net dust collection and purification device S5. The single-device multi-parameter control module includes a spray dust suppression control module P1, an onboard dust control module P2, a hydraulic support dust blocking control module P3, a coal body wetting dust suppression control module P4, and a water film net dust collection control module P5, each used to control the corresponding device. Each single-device multi-parameter control module maintains a communication connection with the multi-device coupling central control, transmitting device status parameters and environmental parameters to the multi-device coupling central control, receiving control commands from the multi-device coupling central control, and adjusting the corresponding device parameters according to the commands. The multi-device coupling central control dynamically adjusts the dust suppression parameters of each device based on the dust concentration C and personnel location information W to intelligently control the dust prevention system of the fully mechanized mining face.

[0060] During coal mining operations underground, the main sources of coal dust include the coal cutting machine's drum, hydraulic support column lowering and shifting, coal transfer and transportation, and the influence of return airflow. In this implementation, the intelligent spray three-dimensional dense dust suppression device S1 and the onboard dust removal device S2 of the coal mining machine are used simultaneously to treat the dust generated during the coal cutting process. The intelligent spray three-dimensional closed dust suppression device S1 mainly controls the dust suppression amplitude based on its corresponding spray pressure and the number of spray states simultaneously activated. Specifically, the control parameter it controls is the particle size of the intelligent spray mist from the coal mining machine. Intelligent spray flow rate of coal mining machine and the speed of intelligent spray mist particles in coal mining machines The S2 onboard dust control and removal equipment for coal mining machines mainly regulates its dust reduction amplitude based on its corresponding spray pressure. Specifically, the control parameters are achieved by controlling the onboard spray jet airflow of the dust control and removal equipment. Airborne spray droplet size Airborne spray flow rate and the velocity of airborne spray droplets Complete the dust reduction adjustment.

[0061] Therefore, a model is established to model the relationship between dust reduction efficiency and various parameters for the dust source of the coal cutting drum of the coal mining machine. The process is as follows:

[0062] Define input variables:

[0063]

[0064] Define output variables:

[0065]

[0066] Where η1 represents the dust reduction efficiency for the coal cutting dust source of the coal mining machine drum, and α1 is the environmental correction coefficient for the coal cutting dust source of the coal mining machine drum. These are the dust reduction efficiency weighting coefficients for equipment S1 and equipment S2, respectively. and These are the dust collection efficiencies of devices S1 and S2, respectively. The coefficient of the enhanced jet flow effect of device S2. The interaction term is defined as the interaction between the mist particles emitted by devices S1 and S2.

[0067] Specifically, the dust collection efficiency of devices S1 and S2 and Determined according to the modified Langmuir formula, it is expressed as:

[0068]

[0069] Where the subscripts S = S1, S2 represent parameters corresponding to different equipment, and ρ represents dust density. S This represents the corresponding fog particle density, and d represents the dust particle size. S Q represents the corresponding mist particle size. S This represents the corresponding mist particle flow rate, v S This indicates the corresponding mist particle velocity.

[0070] Based on this, the specific coefficients in the relational model are determined according to the historical dustfall data of the coal cutting dust source of the coal mining machine drum, thereby constructing the corresponding relational model.

[0071] The S3 adaptive hydraulic support dust suppression device treats the coal dust generated during the lowering and moving of the hydraulic support columns. It primarily achieves dust suppression by adjusting the spray pressure of the dust suppression device. Its actual control parameters include the dust suppression spray ejector airflow. Airborne spray droplet size Airborne spray flow rate and the velocity of airborne spray droplets

[0072] Similarly, a model is established to show the relationship between the dust removal efficiency η2 and the corresponding parameters for coal dust generated during the lowering and moving of hydraulic supports:

[0073] enter:

[0074]

[0075] Output:

[0076]

[0077] Wherein, α2 is the environmental correction coefficient for the dust source of the hydraulic support column lowering and moving. The coefficient for enhancing the ejector airflow effect. The dust collection efficiency of device S3 is determined according to the modified Langmuir formula, which is expressed as:

[0078]

[0079] Based on this, the specific coefficients in the relational model are determined according to the historical dustfall data of the hydraulic support column lowering and moving dust source, thereby constructing the corresponding relational model.

[0080] The S4 non-contact automatic spray dust suppression system is used to treat dust during coal mine transfer and transportation. Its main function is to control the number of sprayers activated to wet the coal body. and spray opening interval Among them, the number of sprayers turned on This refers to the total number of sprayers activated and the spray activation intervals within the transport corridor during transshipment. This refers to the number of unactivated sprays between every two activated sprays, within the limit on the total number of activated sprays.

[0081] Specifically, the dust control efficiency during coal mine transshipment and the number of coal seam wetting sprayers activated are related to... and spray opening interval The relationship between them is represented as follows:

[0082]

[0083] in, σ represents the theoretical maximum efficiency of device S4, σ represents the dust diffusion attenuation coefficient, and θ represents the spray wetting depth. The spray coverage is expressed as follows:

[0084]

[0085] Where L represents the total length of the transport channel, and D represents the interval between each spray installed along the transport channel.

[0086] Similarly, the specific coefficients in the relational model are determined based on historical data on dust handling during coal mine transshipment and transportation, thereby constructing the corresponding relational model.

[0087] The S5 full-section water film screen dust collection and purification equipment in the tunnel is used to treat dust generated by the return airflow. This is mainly achieved by controlling the pumping pressure of the dust collection screen water pump. and the pumping flow rate of the water pump This achieves dust suppression effect control. It determines the relationship between dust collection efficiency η4 and water pump pressure through a fitting method. and the pumping flow rate of the water pump The relationship between them can be represented as follows:

[0088]

[0089] Where a, b, and c are model coefficients determined by fitting the relationship between dust removal efficiency data and parameters based on the influence of historical return airflow.

[0090] All the relationship models established above are stored in the multi-device coupled central control system. This system sets several dust concentration control targets, and simultaneously incorporates personnel location information W as a crucial basis for dust concentration control. Specifically, it sets at least three types of control targets, including: respirable dust concentration targets, dust concentration targets in the vicinity of personnel, and dust concentration targets in uninhabited areas. Which target is specifically adopted as the control target for a particular device is determined autonomously based on the personnel location information W. In other words, the intelligent control process of the multi-device coupled central control system is as follows:

[0091] The real-time concentration information C at the corresponding dust source is obtained from the corresponding spray dust suppression control module P1, airborne dust control and removal module P2, hydraulic support dust barrier control module P3, coal wetting dust suppression control module P4, and water film net dust collection control module P5, respectively. i And personnel information W i Where i represents the area controlled by the corresponding device, W i =0,1,2, when W i When W = 0, it indicates that there is no human activity in the area and its adjacent areas. The corresponding equipment control parameters and control time are calculated by combining the target dust concentration in the uninhabited area with the corresponding dust removal efficiency relationship model. i When W = 1, it indicates that although there is no human activity in its controlled area, there is human activity in its adjacent area. The corresponding equipment control parameters and control time are calculated by combining the target dust concentration in the adjacent area with the corresponding dust removal efficiency relationship model. i When the value is 3, it indicates that there is human activity in the area. The corresponding equipment control parameters and control time are calculated by combining the target respirable dust concentration with the corresponding dust removal efficiency relationship model.

[0092] This enables dynamic dust concentration control that follows the location of personnel. Different control targets are set for areas where personnel are active and areas that personnel may enter. Higher targets are set for areas where no personnel are active. This reduces unnecessary energy waste caused by controlling the entire coal mine at the highest requirements while ensuring personnel safety and coal mine safety.

[0093] Meanwhile, an intelligent dust control platform for fully mechanized mining faces was developed on a multi-device coupled central control system. This platform enables real-time simulation and visualization of dust concentration across the entire mining face, displays multi-source information on "people, machines, and environment" at the mining face, and provides real-time online display of the operating conditions, main technical parameters, single dust reduction efficiency, and overall dust reduction efficiency of dust control equipment. It also enables the display of data information obtained from the analysis of the above data.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-device, multi-parameter coupled intelligent control system for dust control systems in fully mechanized mining faces, characterized in that: It includes: The system includes a multi-device coupled central control unit, a single-device multi-parameter control module, and several corresponding dust suppression devices. The corresponding dust suppression equipment includes intelligent spray three-dimensional intensive dust suppression equipment for coal mining machines. Dust removal equipment on coal mining machine Adaptive hydraulic support dust barrier equipment Non-contact automatic spraying equipment for coal dust suppression And the full-section water film net dust collection and purification equipment for tunnels ; The single-device multi-parameter control module includes spray dust suppression control modules for regulating the corresponding equipment. Airborne dust removal control module Hydraulic support dust control module Coal Wetting Dust Control Module and water film net dust collection control module ; Each single-device multi-parameter control module maintains a communication connection with the multi-device coupled central control system, transmitting equipment status parameters and environmental parameters to the central control system, receiving control commands from the central control system, and adjusting the corresponding equipment parameters according to the commands; the multi-device coupled central control system combines dust concentration... and personnel location information The dust suppression parameters of each device are dynamically adjusted to enable intelligent control of the dust control system at the fully mechanized mining face. The multi-device coupled central control system stores a model showing the relationship between the dust reduction efficiency of the coal cutting drum dust source and various parameters of the corresponding equipment. A model relating the dust removal efficiency of coal dust generated during the lowering and moving of hydraulic supports to various parameters of the corresponding equipment. A model relating dust removal efficiency to various parameters of the equipment used in coal mine transshipment and transportation. And a model relating dust removal efficiency to various parameters in response to the influence of return airflow. ; The multi-device coupled central control system sets several dust concentration control targets, while simultaneously incorporating personnel location information. As an important basis for its dust concentration control, it sets at least three types of control targets, including: respirable dust concentration targets, dust concentration targets in areas near personnel, and dust concentration targets in uninhabited areas. The intelligent control process of multi-device coupled central control is as follows: From the corresponding spray dust suppression control module Airborne dust removal control module Hydraulic support dust control module Coal Wetting Dust Control Module and water film net dust collection control module Obtain real-time concentration information at the corresponding dust source. and personnel information ,in, This indicates the area controlled by the corresponding device. ,when When the dust concentration in the uninhabited area is at a certain level, it indicates that there is no human activity in the area and its adjacent areas. The corresponding equipment control parameters and control time are calculated by combining the dust concentration target of the uninhabited area with the corresponding dust removal efficiency relationship model. When the control area is unoccupied but there is human activity in the adjacent area, the corresponding equipment control parameters and control time are calculated by combining the dust concentration target in the adjacent area with the corresponding dust removal efficiency relationship model; when When the time is specified, it indicates that there is human activity in the area. The corresponding equipment control parameters and control time are calculated by combining the target respirable dust concentration with the corresponding dust removal efficiency relationship model.

2. The multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces according to claim 1, characterized in that: Intelligent spray three-dimensional intensive dust suppression equipment for coal mining machines Dust removal equipment on coal mining machine Also used to treat dust generated during coal cutting by the drum of a coal mining machine; intelligent three-dimensional dense dust suppression equipment for coal mining machines. The dust reduction amplitude is controlled by the corresponding spray pressure and the number of sprayers operating simultaneously. Specifically, the control parameters control the particle size of the intelligent spray mist from the coal mining machine. Intelligent spray flow rate of coal mining machine and the speed of intelligent spray mist particles in coal mining machines Dust control and removal equipment on coal mining machines The dust reduction amplitude is adjusted according to the corresponding spray pressure. Specifically, the actual control parameters are achieved by controlling the airborne spray jet airflow of the airborne dust removal equipment. Airborne spray particle size Airborne spray flow rate and the velocity of airborne spray droplets Complete the dust reduction adjustment.

3. The multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces according to claim 2, characterized in that: Establish a model relating dust reduction efficiency to various parameters for dust sources from coal cutting drums in coal mining machines. The process is as follows: Define input variables: Define output variables: in, This indicates the dust reduction efficiency for the coal cutting drum of a coal mining machine. This is the environmental correction factor for dust sources from the coal cutting drum of the coal mining machine. , respectively equipment and equipment The weighting coefficient for dust reduction efficiency and respectively equipment and equipment The efficiency of dust collection from mist particles, For equipment The coefficient of the enhanced effect of the ejector airflow, For equipment and equipment The interaction term of the ejected mist particles; equipment and equipment Fog particle dust collection efficiency and Determined according to the modified Langmuir formula, it is expressed as: Among them, subscript This indicates the parameters corresponding to different devices. Indicates dust density, This indicates the corresponding fog particle density. Indicates dust particle size, Indicates the corresponding mist particle size. This indicates the corresponding mist particle flow rate. This represents the corresponding mist particle velocity; based on this, the specific coefficients in the relational model are determined according to the historical dustfall data of the coal cutting dust source of the coal mining machine drum, thereby constructing the corresponding relational model.

4. The multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces according to claim 1, characterized in that: Dust-blocking equipment using adaptive hydraulic supports The coal dust generated during the lowering and relocation of hydraulic support columns is also treated by adjusting the spray pressure of its dust-blocking equipment. The actual control parameters include the dust-blocking spray and the airflow. Airborne spray particle size Airborne spray flow rate and the velocity of airborne spray droplets .

5. The multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces according to claim 4, characterized in that: Establish a model relating dust removal efficiency to corresponding parameters for coal dust generated during the lowering and shifting of hydraulic supports. The process is as follows: Input: Output: in, The environmental correction factor for the dust source of hydraulic support column lowering and moving. The coefficient for enhancing the ejector airflow effect. For equipment The dust collection efficiency of the mist particles is determined according to the modified Langmuir formula, which is expressed as: Based on this, the specific coefficients in the relational model are determined according to the historical dustfall data of the hydraulic support column lowering and moving dust source, thereby constructing the corresponding relational model.

6. The multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces according to claim 1, characterized in that: Non-contact automatic spraying coal dust suppression equipment To control dust during coal mine transshipment, the number of coal seam wetting sprays activated is controlled. and spray opening interval Among them, the number of sprayers turned on This refers to the total number of sprayers activated and the spray activation intervals within the transport corridor during transshipment. This refers to the number of unactivated sprays between every two activated sprays, within the limit on the total number of activated sprays.

7. The multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces according to claim 6, characterized in that: Dust control efficiency and the number of coal seam wetting sprays activated during coal mine transshipment and transportation and spray opening interval Relationship Model Represented as: in, Indicates device The theoretical maximum efficiency, Indicates the dust diffusion attenuation coefficient. Indicates the depth of spray wetting. The spray coverage is expressed as follows: in, Indicates the total length of the transportation corridor. This indicates the distance interval between each spray installed along the transport channel; The specific coefficients in the relational model are determined based on historical data on dust handling during coal mine transshipment and transportation, thereby constructing the corresponding relational model.

8. The multi-device, multi-parameter coupled intelligent control system for dust control in fully mechanized mining faces according to claim 1, characterized in that: Dust collection and purification equipment using full-section water film net in the tunnel The dust generated due to the return airflow is handled by controlling the pumping pressure of the dust collection screen water pump. and the pumping flow rate of the water pump It achieves dust reduction effect regulation; it determines dust collection efficiency through fitting. Pumping pressure of the water pump and the pumping flow rate of the water pump Relationship Model It is represented as: in, The model coefficients are determined by fitting the relationship between the dust removal efficiency data and parameters based on the influence of historical return airflow. A smart dust control platform for fully mechanized mining faces was developed on a multi-device coupled central control system. This platform provides real-time simulation and visualization of dust concentration across the entire mining face, including real-time display of multi-source information on "people, machines, and environment" at the mining face, as well as real-time online display of the operating conditions, technical parameters, single dust reduction efficiency, and overall dust reduction efficiency of dust control equipment.

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