Spraying, cooling and dedusting control method, device and system for hydraulic support

Abstract

The invention provides a spray cooling and dedusting control method, device and system for a hydraulic support, relates to the technical field of underground coal mining, and aims to solve the problem of poor overall control efficiency of dust and high-temperature environment of a fully mechanized coal mining face. The method comprises the following steps: collecting dynamic parameters of a fully mechanized coal mining face, wherein the dynamic parameters comprise coal mining machine position information, personnel positioning information and environment temperature and humidity information; generating a dust fall control instruction under the condition that the dust fall spraying condition is judged to be met based on the position information of the coal mining machine; generating a cooling control instruction under the condition of judging that a cooling spraying condition is met based on the personnel positioning information and the environment temperature and humidity information; according to the priority relation between the dust falling control instruction and the cooling control instruction, the start-stop state of the hydraulic support spraying device is controlled, and the priority of the dust falling control instruction is higher than that of the cooling control instruction.

Description

Technical Field

[0001] This invention relates to the field of underground coal mining technology, and in particular to a method, device and system for controlling spray cooling and dust removal on hydraulic supports. Background Technology

[0002] In the production of fully mechanized longwall mining faces in deep mines, processes such as coal cutting by the mining machine and the movement of hydraulic supports generate a large amount of dust and high-temperature heat hazards. Currently, the spray systems used in the working faces are mainly designed for dust removal and have not yet been specifically applied to cooling. Extending the spray system to cooling would lead to a more complex control strategy. Existing technology attempts to switch spray states by combining temperature signals, using both water curtain and atomizing nozzles and corresponding gas-liquid pipelines to achieve different dust removal and cooling effects. However, this system is structurally complex, and the spray system is usually independent of the main production control system, with control methods mostly being start-up linkage or manual control, resulting in a relatively simple strategy. Furthermore, the common use of ambient temperature water for spraying leads to slow evaporation under high temperature and humidity conditions, resulting in low cooling efficiency. Excessive water spraying can increase air humidity, creating a more stifling and humid environment, which in turn affects the cooling effect.

[0003] Therefore, there is an urgent need to design a solution that can efficiently and collaboratively handle dust and high-temperature heat hazards in fully mechanized mining faces in order to improve the overall effect of cooling and dust removal. Summary of the Invention

[0004] This invention provides a method, device, and system for controlling spray cooling and dust removal on hydraulic supports, which addresses the shortcomings of poor overall control efficiency for dust and high-temperature environments in fully mechanized mining operations, and achieves simultaneous improvement in cooling and dust removal effects.

[0005] This invention provides a method for controlling the spray cooling and dust suppression of hydraulic supports, comprising the following steps: collecting dynamic parameters of the fully mechanized mining face, including coal mining machine location information, personnel positioning information, and ambient temperature and humidity information; generating a dust suppression control command when the conditions for dust suppression spraying are met based on the coal mining machine location information; generating a cooling control command when the conditions for cooling spraying are met based on the personnel positioning information and ambient temperature and humidity information; and controlling the start and stop status of the hydraulic support spraying device according to the priority relationship between the dust suppression control command and the cooling control command, with the dust suppression control command having a higher priority than the cooling control command.

[0006] According to the present invention, a method for controlling the spray cooling and dust removal of hydraulic supports is provided. The method for generating a dust removal control command when the dust removal spray conditions are met based on the coal mining machine position information includes: outputting a dust removal control command when the coal mining machine position information indicates that the coal mining machine has entered the target hydraulic support area; wherein the target hydraulic support area includes the current hydraulic support and adjacent hydraulic supports.

[0007] According to the hydraulic support spray cooling and dust removal control method provided by the present invention, the above-mentioned dynamic parameters also include dust concentration information, and can also output dust removal control commands when the dust concentration information exceeds a preset concentration threshold.

[0008] According to the hydraulic support spray cooling and dust removal control method provided by the present invention, the above-mentioned dynamic parameters also include hydraulic support action information, and can also output dust removal control commands when the hydraulic support action information indicates that the current hydraulic support is performing a lowering, moving or raising operation.

[0009] According to the hydraulic support spray cooling and dust removal control method provided by the present invention, when the cooling spray conditions are met based on personnel positioning information and ambient temperature and humidity information, a cooling control command is generated, including: when the personnel positioning information indicates that a person is in the target hydraulic support area and the temperature value in the ambient temperature and humidity information exceeds a preset temperature threshold, a cooling control command is output.

[0010] According to the hydraulic support spray cooling and dust removal control method provided by the present invention, the control mode of the above-mentioned cooling control command may further include: when the humidity value in the ambient temperature and humidity information exceeds a preset humidity threshold, the output of the cooling control command is prohibited.

[0011] According to the present invention, a method for controlling the spraying of a hydraulic support for cooling and dust suppression is provided. The method for controlling the start and stop status of the spraying device of the hydraulic support based on the priority relationship between the dust suppression control command and the cooling control command includes: when both the dust suppression control command and the cooling control command are generated, the dust suppression control command is activated first to execute the dust suppression spraying operation; wherein the area covered by the dust suppression spraying operation includes the shield beam and the top beam of the target hydraulic support.

[0012] According to the hydraulic support spray cooling and dust removal control method provided by the present invention, after the dust suppression spray operation is completed, a cooling control command can be activated to restore the cooling spray operation in the area covered by the dust suppression spray operation if the cooling spray conditions are met.

[0013] The hydraulic support spray cooling and dust removal control method provided by the present invention can also monitor the rate of change of ambient temperature and humidity information in real time; when the rate of change exceeds a preset rate, the spraying duration of the hydraulic support spray device is adjusted.

[0014] The present invention also provides a hydraulic support spray cooling and dust suppression control device, comprising the following modules: a sensing module for collecting dynamic parameters of the fully mechanized mining face, including coal mining machine position information, personnel positioning information, ambient temperature and humidity information, and dust concentration information; a control module for generating a dust suppression control command when the dust suppression spray conditions are met based on the coal mining machine position information; the control module is also used to generate a cooling control command when the cooling spray conditions are met based on the personnel positioning information and ambient temperature and humidity information; and is also used to control the start and stop status of the hydraulic support spray device according to the priority relationship between the dust suppression control command and the cooling control command, wherein the priority of the dust suppression control command is higher than that of the cooling control command.

[0015] The present invention also provides a hydraulic support spray cooling and dust removal control system, comprising: multiple hydraulic supports, wherein a spray device is installed on the top beam and / or shield beam of the hydraulic supports; a coal mining machine positioning unit configured to acquire coal mining machine position information; a personnel positioning unit configured to acquire personnel positioning information; an environmental monitoring unit configured to acquire ambient temperature and humidity information near the hydraulic supports; and a controller connected to the coal mining machine positioning unit, the personnel positioning unit, the environmental monitoring unit, and the spray device respectively, and configured to execute the hydraulic support spray cooling and dust removal control method as described above.

[0016] The present invention also provides a network controller, including a processor and a non-transitory computer-readable storage medium; the non-transitory computer-readable storage medium stores a computer program, which, when executed by the processor, implements the hydraulic support spray cooling and dust removal control method as described above.

[0017] The hydraulic support spray cooling and dust suppression control method, device, and system provided by this invention achieve comprehensive perception of the working face conditions by collecting multi-source dynamic parameters such as the location of the coal mining machine, personnel positioning, and ambient temperature and humidity, laying an information foundation for precise control. Then, by separately judging dust suppression and cooling conditions and generating corresponding instructions, the spray control can actively suppress dust sources and achieve on-demand targeted cooling based on the actual thermal environment needs of personnel, effectively avoiding water waste and environmental degradation caused by aimless spraying. Finally, by setting a hierarchical relationship between dust suppression instructions and cooling instructions, the absolute priority of dust suppression operations during peak dust production periods is ensured, fundamentally guaranteeing the dust control effect. At the same time, the cooling function is intervened without affecting dust suppression, thereby synergistically improving the overall efficiency of environmental control in the fully mechanized mining face. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a hydraulic support spray cooling and dust removal control system provided by the present invention.

[0020] Figure 2 This is one of the flowcharts of a hydraulic support spray cooling and dust removal control method provided by the present invention.

[0021] Figure 3 This is the second schematic diagram of a hydraulic support spray cooling and dust removal control method provided by the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of a hydraulic support spray cooling and dust removal control device provided by the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] This invention provides a hydraulic support spray cooling and dust suppression control system, which includes multiple hydraulic supports, a coal mining machine positioning unit, a personnel positioning unit, an environmental monitoring unit, and a controller. Spraying devices are installed on the top beam and / or shield beam of the hydraulic supports.

[0025] Specifically, the hydraulic support can adopt a four-column support structure. The top beam and the shield beam are welded from high-strength steel plates. The spraying device is fixed to the front of the top beam and the side of the shield beam by bolts. Each spraying device is equipped with 3-6 high atomization nozzles. The nozzle atomization angle can be adjusted within the range of 60°-120° to adapt to different spray coverage requirements.

[0026] For example, the coal mining machine positioning unit is configured to acquire coal mining machine position information; the personnel positioning unit is configured to acquire personnel positioning information; and the environmental monitoring unit is configured to acquire ambient temperature and humidity information near the hydraulic support.

[0027] For example, the controller is connected to the coal mining machine positioning unit, personnel positioning unit, environmental monitoring unit and spray device respectively to perform cooling and dust removal.

[0028] In this embodiment, the coal mining machine positioning unit can be an infrared receiver, the personnel positioning unit can be a hydraulic support controller, and the environmental monitoring unit can include an environmental temperature and humidity sensor and a dust concentration sensor.

[0029] like Figure 1 As shown, the hydraulic support spray cooling and dust removal control system provided by the present invention may include: a hydraulic support 110, a spray device 120, a spray valve 130, an ambient temperature and humidity sensor 140, a dust concentration sensor 150, an infrared receiver 160, and a hydraulic support controller 170.

[0030] In some embodiments, spraying devices 120 are installed on the top beam 111 and the shield beam 112 of the hydraulic support 110. Specifically, two spraying devices are installed at the front of the top beam 111 and one spraying device is installed on the side of the shield beam 112. Each spraying device is equipped with four spiral atomizing nozzles.

[0031] For example, the infrared receiver 160 is used to receive the signal emitted by the infrared transmitter 181 installed on the coal mining machine 180, so as to obtain the position information of the coal mining machine.

[0032] In practice, one infrared transmitter is installed on each side of the coal mining machine. The infrared receiver 160 can accurately locate the support where the coal mining machine is located by detecting changes in the intensity of the received infrared signal and combining this with the support number.

[0033] For example, the hydraulic support controller 170 is used to collect signals sent by the personnel positioning card 190 carried by the staff to obtain personnel positioning information.

[0034] In practice, personnel positioning cards can use active radio frequency identification (RFID) tags. The hydraulic support controller 170 has a built-in card reader with an adjustable reading distance of 0.5-3 meters. When personnel enter this range, the card reader automatically identifies the positioning card ID number to determine the personnel's location information.

[0035] For example, the ambient temperature and humidity sensor 140 is used to collect ambient temperature and humidity information.

[0036] In practice, the ambient temperature and humidity sensor 140 can be installed on the top beam of the hydraulic support to avoid the influence of water spraying from the top plate and water accumulation on the bottom plate, and collects temperature and humidity data every 5 seconds.

[0037] For example, the hydraulic support controller 170 is connected to the infrared receiver 160, the ambient temperature and humidity sensor 140 and the spray device 120 respectively, and is used to control the spray valve 130 to open or close based on the signals collected by the infrared receiver 160, the ambient temperature and humidity sensor 140 and itself, so as to achieve cooling or dust removal of the spray device 120.

[0038] Specifically, the hydraulic support controller 170 receives signals from various sensors and determines whether the spraying conditions are met based on preset control logic.

[0039] When the dust suppression conditions are met, the controller outputs a control signal to drive the spray valve 130 and adjust the valve opening to control the spray flow rate.

[0040] When the cooling conditions are met, the controller only activates the spray device at the top beam and adjusts the spray intensity using a proportional-integral-derivative (PID) algorithm to maintain the ambient temperature within the set range.

[0041] Thus, this application achieves precise control of the working face environment through multi-source information fusion and intelligent judgment. Based on changes in coal mining technology, support movements, personnel distribution, and environmental parameters, the spraying strategy is automatically adjusted to achieve on-demand cooling while ensuring dust suppression, thereby improving water resource utilization efficiency and enhancing the working face environment.

[0042] The following is combined Figure 2 and Figure 3 The present invention describes a hydraulic support spray cooling and dust removal control method.

[0043] Figure 2 This is a flowchart illustrating a hydraulic support spray cooling and dust removal control method provided by the present invention, as shown below. Figure 2 As shown, the method includes the following: S201. Collect dynamic parameters of the fully mechanized mining face.

[0044] In this embodiment, the dynamic parameters include coal mining machine location information, personnel positioning information, and ambient temperature and humidity information.

[0045] For example, the coal mining machine location information refers to the real-time location coordinates of the coal mining machine obtained by the cooperation of an infrared transmitter installed on the coal mining machine body and an infrared receiver on the hydraulic support.

[0046] In practice, if the coal mining machine moves along the working face at a speed of 0.5-3 m / min, the infrared transmitter emits an infrared signal every 2 seconds. After the infrared receiver detects the signal, it records the timestamp and signal strength through the hydraulic support controller, and calculates the precise position of the coal mining machine by combining the support number.

[0047] For example, personnel location information refers to the distribution of personnel in the hydraulic support area obtained through communication between the positioning cards worn by staff and the hydraulic support controller.

[0048] In practice, if the positioning card transmits an radio frequency signal every 3 seconds, the card reader built into the hydraulic support controller can identify the positioning card ID within a range of 0.5-3 meters, and estimate the relative distance between the person and the support by using the received signal strength indicator (RSSI), thereby achieving regional positioning of the person's location.

[0049] For example, the ambient temperature and humidity information refers to the temperature and humidity data collected by the ambient temperature and humidity sensor arranged on the top beam of the hydraulic support.

[0050] In practice, the sensor can periodically (e.g., every 5 seconds) collect data. The collected data is transmitted to the hydraulic support controller via RS485 bus. The controller performs digital filtering on the data to eliminate instantaneous interference.

[0051] Optionally, the aforementioned dynamic parameters may also include dust concentration information.

[0052] For example, dust concentration information refers to the mass concentration of suspended dust in the working face air collected by a dust concentration sensor, with the unit being mg / m³.

[0053] In practice, a dust concentration sensor can be used to measure dust concentration based on the principle of light scattering. Data is collected every 10 seconds and transmitted to the hydraulic support controller via analog signals.

[0054] Optionally, the aforementioned dynamic parameters may also include hydraulic support movement information.

[0055] For example, hydraulic support action information refers to the working status data of the hydraulic support monitored by the hydraulic support controller.

[0056] In practice, the relative displacement between the top beam and the base can be monitored by the displacement sensor built into the hydraulic support controller to determine the lowering and raising operations; the pressure change in the hydraulic circuit of the column can be monitored by the built-in pressure sensor to determine the moving operation.

[0057] In this embodiment, the above parameters can be collected in real time by various sensors and the data can be transmitted to the hydraulic support controller for processing.

[0058] For example, the hydraulic support controller can preprocess the collected data, including digital filtering, outlier removal, and data standardization, to ensure the accuracy and reliability of the data. The preprocessed data is stored in the controller's circular buffer for use by the control algorithm.

[0059] S202. Based on the coal mining machine's location information, if the dust suppression spray conditions are met, generate a dust suppression control command.

[0060] In the embodiments of this application, a dust control command can be generated if at least one of the following implementation methods is satisfied.

[0061] In one alternative implementation, a dust suppression control command can be output when the coal mining machine's position information indicates that the coal mining machine has entered the target hydraulic support area.

[0062] The target hydraulic support area includes the current hydraulic support and adjacent hydraulic supports.

[0063] In practice, the target hydraulic support area can be adjusted from 1 to 3 supports depending on the working conditions, with the default setting being the current support and one support on each side. For example, if the current hydraulic support is support number n, then the adjacent hydraulic supports are supports number n-1 and n+1.

[0064] For example, when the coal mining machine runs to the nth hydraulic support, the system detects the coal mining machine signal through an infrared receiver, determines the position of the coal mining machine by combining the support number, and then determines the n-1, n, and n+1 hydraulic supports as the target hydraulic support area according to the preset dust suppression range parameters.

[0065] Specifically, when the hydraulic support controller detects the coal mining machine entering its support area via an infrared receiver, it immediately generates a dust suppression control command. The control command includes parameters such as the target support number, spray mode (dust suppression), and spray duration. The command is sent to the spray controller of the target hydraulic support via the controller area network (CAN) bus, controlling the spray devices of this support and the two adjacent hydraulic supports to operate simultaneously in the preset dust suppression mode, forming an enveloping fog field.

[0066] Thus, by using the entry of the coal mining machine into a specific support area as a dust suppression trigger condition, this application enables the prediction and tracking of dust sources, and can form a local fog field for enveloping settling before the dust spreads, thereby improving dust collection efficiency from the source and achieving active dust suppression.

[0067] In another alternative implementation, a dust control command can be output when the dust concentration exceeds a preset concentration threshold.

[0068] In this embodiment, the preset concentration threshold can be a manually set value, which can be flexibly adjusted according to the actual scenario. For example, the preset concentration threshold can be set according to the characteristics of coal dust in the working face, with a default value of 150 mg / m³. 3 .

[0069] For example, when the dust concentration sensor detects that the concentration value exceeds the preset concentration threshold, the sensor outputs an analog signal to the hydraulic support controller. The controller reads the concentration value, compares it with the preset concentration threshold again, and then triggers spraying.

[0070] Thus, by adding dust concentration as a parallel judgment condition, this application constitutes a dual criterion of position and concentration, effectively avoiding spray failure caused by occasional loss of positioning signal, and enhancing the redundancy and system reliability of dust control.

[0071] In another alternative implementation, a dust suppression control command can be output when the hydraulic support action information indicates that the current hydraulic support is performing a lowering, moving, or raising operation.

[0072] Thus, by further introducing the movement of the support as a dust suppression trigger condition, this application can effectively and timely control the dust generated during the movement of the support, making up for the shortcomings of simply relying on the position of the coal mining machine, and forming a more complete dust suppression control system.

[0073] S203. If the conditions for cooling spraying are met based on personnel location information and ambient temperature and humidity information, generate a cooling control command.

[0074] In some embodiments, a cooling control command may be output when the personnel location information indicates that a person is in the target hydraulic support area and the temperature value in the ambient temperature and humidity information exceeds a preset temperature threshold.

[0075] In this embodiment, the preset temperature threshold can be a manually set value, which can be flexibly adjusted according to the actual scenario. For example, it can be adjusted according to the mine's heat hazard level and operating procedures. For a Class I heat hazard mine, it is set to 28℃; for a Class II heat hazard mine, it is set to 29℃; and for a Class III heat hazard mine, it is set to 30℃.

[0076] For example, taking a preset temperature threshold of 28°C as an example, when personnel are detected in the hydraulic support area and the ambient temperature exceeds 28°C, the hydraulic support controller generates a cooling control command. The command includes parameters such as the target support number, spray mode (cooling), and spray intensity. The required spray flow rate is then calculated using a PID algorithm to maintain the ambient temperature within a comfortable range of 26-28°C.

[0077] Specifically, when a worker entered the area of ​​hydraulic support No. 50 to perform equipment maintenance, the temperature sensor in that area showed a temperature of 29°C. The system immediately activated the cooling spray in that area, gradually reducing the temperature to 27.5°C and maintaining it at a stable temperature.

[0078] Thus, this application strictly limits the triggering conditions for cooling spray to the simultaneous presence of personnel and high temperature, ensuring that spray resources are accurately directed to areas where personnel comfort is actually needed, and avoiding ineffective spraying and energy waste in uninhabited areas or when the temperature is suitable.

[0079] S204. Control the start / stop status of the hydraulic support spray device according to the priority relationship between dust suppression control command and cooling control command.

[0080] In this embodiment, the dust suppression control command has a higher priority than the cooling control command. In other words, when the dust suppression condition is triggered, the system immediately suspends the currently executing cooling spray and prioritizes the dust suppression task.

[0081] In some embodiments, when both dust suppression control command and cooling control command are generated, the dust suppression control command is activated first to perform the dust suppression spray operation.

[0082] The dust suppression spray operation covers the shield beam and top beam of the target hydraulic support. In practice, the dust suppression spray simultaneously activates all spray devices on the front of the top beam and the sides of the shield beam, creating a three-dimensional fog field to completely envelop the dust.

[0083] For example, when a certain area requires both dust suppression and cooling, the system prioritizes dust suppression spraying. The controller first saves the current cooling spray status and then immediately switches to dust suppression mode. During dust suppression, the system continuously monitors dust conditions until the coal mining machine leaves the area and the dust concentration drops below a safe level, at which point it resumes the previous cooling operation.

[0084] Specifically, in the area of ​​hydraulic support No. 50, both coal mining machine operations generated dust, and workers needed to cool down. Upon detecting this conflict, the cooling spray was immediately suspended, and the dust suppression mode was prioritized. The spray devices on the shield beam and top beam were controlled to work simultaneously. At the same time, the system recorded the interrupted cooling task and automatically resumed it after the dust suppression was completed.

[0085] Thus, by clearly stipulating that dust suppression instructions should be given priority, this application ensures the absolute priority of the core function of dust removal during peak dust production periods, prevents the cooling spray from interfering with the dust suppression process, and safeguards the basic health and safety of the working environment.

[0086] Furthermore, after the dust suppression spraying operation is completed, it can be reassessed to determine whether the cooling spraying conditions are met, so as to decide whether to perform the cooling spraying operation.

[0087] In some embodiments, after the dust suppression spraying operation ends, a cooling control command can be activated to resume the cooling spraying operation in the area covered by the dust suppression spraying operation if the cooling spraying conditions are met.

[0088] For example, a cooling condition detection process can be automatically initiated after the dust suppression spray ends. First, it checks whether the coal mining machine has completely left the current area (e.g., at least 3 frames away). Then, it checks whether the dust concentration has returned to normal (e.g., 100 mg / m³). Finally, it reassesses the personnel location and ambient temperature. If the conditions are still met, the cooling spray is resumed.

[0089] Specifically, 5 minutes after the coal mining machine left the area of ​​support No. 50, the dust concentration sensor showed that the concentration had dropped to 80mg / m³. At this time, the system detected that there were still people in the area and the temperature was 28.5℃. So the top beam spray device was immediately activated to cool down the temperature and gradually reduce the ambient temperature to 27℃.

[0090] Thus, the mechanism of automatically resuming cooling after prioritizing dust suppression achieves seamless connection and intelligent switching between the two major functions of dust removal and cooling, maximizing the thermal comfort of the personnel activity area while ensuring the dust control effect.

[0091] In the hydraulic support spray cooling and dust suppression control method provided in this application embodiment, a comprehensive perception of the working face conditions is achieved by collecting multi-source dynamic parameters such as the location of the coal mining machine, personnel positioning, and ambient temperature and humidity, laying an information foundation for precise control. Then, by judging the dust suppression and cooling conditions separately and generating corresponding instructions, the spray control can actively suppress dust sources and achieve on-demand targeted cooling based on the thermal environment requirements of the actual personnel location, effectively avoiding water waste and environmental degradation caused by aimless spraying. Finally, by setting a hierarchical relationship where dust suppression instructions take precedence over cooling instructions, the absolute priority of dust suppression operations during peak dust production periods is ensured, fundamentally guaranteeing the dust control effect. At the same time, the cooling function is intervened without affecting dust suppression, thereby synergistically improving the overall efficiency of environmental control in the fully mechanized mining face.

[0092] Optionally, the start and stop of the cooling spray operation can be controlled according to the ambient humidity.

[0093] In some embodiments, if the humidity value in the ambient temperature and humidity information exceeds a preset humidity threshold, the output of cooling control commands can be prohibited.

[0094] In this embodiment, the preset humidity threshold can be a manually set value that can be flexibly adjusted according to the actual scenario. For example, it can be adjusted according to the mine ventilation conditions and seasonal changes. It can be set to 85% when ventilation is poor and to 95% when ventilation is good in winter.

[0095] For example, taking a preset humidity threshold of 85% in summer as an example. When the ambient humidity exceeds this threshold, the cooling spray will not be activated even if the temperature exceeds the limit.

[0096] Specifically, when the ambient humidity in a certain area reaches 90%, the cooling spray request in that area is automatically blocked, and the humidity conditions are rechecked every 5 minutes. When the humidity drops below 85%, the blocking state is lifted, and the cooling spray is allowed to start.

[0097] Thus, by introducing humidity as a suppressive condition for cooling spray, this application can effectively prevent spraying from continuing when the ambient humidity is close to saturation, thereby avoiding the exacerbation of stuffiness due to excessive air humidity and improving the actual cooling effect.

[0098] Optionally, the spraying duration can be adjusted based on changes in ambient temperature and humidity during the spraying operation.

[0099] The complete process of the hydraulic support spray cooling and dust removal control method provided by the present invention will be explained below.

[0100] For example, such as Figure 3 As shown, the hydraulic support spray cooling and dust removal control method provided by the present invention may include the following steps in its completion process: S301. Initialize system parameters.

[0101] For example, after power-on, a self-test is first performed, including sensor communication tests, spray valve operation tests, and controller memory checks. Then, preset parameters are loaded: dust settling temperature threshold 28℃, dust settling humidity threshold 85%, dust concentration threshold 150mg / m³, basic spray duration 5 minutes, and maximum spray flow rate 10L / min. At the same time, a data logging file is created to prepare for receiving sensor data.

[0102] S302. Collect coal mining machine location information, hydraulic support action information, and dust concentration information.

[0103] For example, data from each sensor can be collected at fixed intervals (e.g., 200ms). The status of the infrared receiver is read to determine the position of the coal mining machine; the signal output by the dust concentration sensor is read and converted into a dust concentration value; and the support action signals (lowering, moving, raising, etc.) are detected through the hydraulic support controller.

[0104] S303. Does the coal mining machine location information, hydraulic support operation information, or dust concentration information meet the dust suppression spray conditions? If yes, proceed to S304; otherwise, proceed to S306.

[0105] For example, logical judgments can be made on the collected data. First, check whether the coal mining machine has entered the area of ​​the current frame and adjacent frames, then check whether the dust concentration exceeds 150mg / m³, and finally check whether there is any dust generation activity of the supports.

[0106] Specifically, dust suppression spraying is triggered when any one of the three conditions is met. Simultaneously, the system records the triggering conditions and timestamps for subsequent analysis and optimization.

[0107] S304. Perform dust suppression spraying operation, and turn on the spraying device of the current hydraulic support and adjacent hydraulic supports.

[0108] For example, the controller can output a 12V control signal to drive the spray valve and adjust the valve opening.

[0109] S305. After the spraying operation is performed, the personnel positioning information, hydraulic support action information, coal mining machine position information, ambient temperature and humidity information, and dust concentration information at each fixed time are uploaded to the hydraulic support controller, and S303 is executed.

[0110] For example, all sensor data can be packaged and uploaded at fixed intervals (e.g., 30 seconds). The data package includes: timestamp, support number, coal mining machine location, personnel information, temperature, humidity, dust concentration, spray status, etc. After the upload is completed, the system immediately returns to step S303 to start a new control cycle, ensuring the real-time nature and continuity of control.

[0111] S306. Has personnel location information been detected? If yes, proceed to S307; otherwise, proceed to S310.

[0112] S307. Is the temperature value greater than the preset temperature threshold? If yes, proceed to S308; otherwise, proceed to S310.

[0113] For example, the ambient temperature of the current area can be read and compared with a preset threshold (such as 28°C).

[0114] Specifically, the average of the last 5 temperature values ​​can be used as the basis for judgment. If the average temperature exceeds the threshold and the temperature has been rising in the last 2 minutes, then it is determined that cooling is necessary.

[0115] S308. Is the humidity value less than the preset humidity threshold? If yes, proceed to S309; ​​otherwise, proceed to S310.

[0116] For example, it is possible to check whether the current ambient humidity is below a preset threshold (e.g., 85%).

[0117] Specifically, the average of the most recent (e.g., 5) humidity values ​​can be taken. If the humidity exceeds the standard, the system will record the value of the exceedance and the duration, and send an early warning message to the central control center via the CAN bus.

[0118] S309. Perform cooling spray operation, turn on the spray device of the current hydraulic support and the adjacent hydraulic support, and execute S305.

[0119] For example, the spray device at the top beam can be turned on, and the spray duration can be adjusted according to the temperature deviation.

[0120] S310, Stop the cooling spray operation and execute S305.

[0121] Thus, this application achieves intelligent, precise, and efficient control of the working face environment through a complete control process. It automatically switches working modes based on real-time operating conditions, achieving on-demand cooling while ensuring dust suppression, thereby improving the underground working environment and enhancing production safety and work efficiency.

[0122] The following describes the hydraulic support spray cooling and dust removal control device provided by the present invention. The hydraulic support spray cooling and dust removal control device described below can be referred to in correspondence with the hydraulic support spray cooling and dust removal control method described above.

[0123] Figure 4 This is a structural diagram of a hydraulic support spray cooling and dust removal control device 400 provided in an embodiment of this application. The hydraulic support spray cooling and dust removal control device 400 includes: a sensing module 401 and a control module 402.

[0124] The system includes: a sensing module 401, used to collect dynamic parameters of the fully mechanized mining face, including coal mining machine location information, personnel positioning information, ambient temperature and humidity information, and dust concentration information; a control module 402, used to generate dust suppression control commands when the conditions for dust suppression spraying are met based on the coal mining machine location information; a cooling control command when the conditions for cooling spraying are met based on the personnel positioning information and ambient temperature and humidity information; and a control module 402 to control the start and stop status of the hydraulic support spraying device according to the priority relationship between the dust suppression control command and the cooling control command, with the dust suppression control command having a higher priority than the cooling control command.

[0125] In some embodiments, the control module 402 is specifically used to: output a dust suppression control command when the coal mining machine position information indicates that the coal mining machine has entered the target hydraulic support area; wherein, the target hydraulic support area includes the current hydraulic support and adjacent hydraulic supports.

[0126] In some embodiments, the dynamic parameters mentioned above also include dust concentration information, and the control module 402 is further configured to output a dust reduction control command when the dust concentration information exceeds a preset concentration threshold.

[0127] In some embodiments, the dynamic parameters mentioned above also include hydraulic support action information. The control module 402 is further configured to output dust suppression control commands when the hydraulic support action information indicates that the current hydraulic support is performing a lowering, moving, or raising operation.

[0128] In some embodiments, the control module 402 is specifically used to: output a cooling control command when the personnel positioning information indicates that a person is in the target hydraulic support area and the temperature value in the ambient temperature and humidity information exceeds a preset temperature threshold.

[0129] In some embodiments, the control module 402 is further configured to: prohibit the output of cooling control commands when the humidity value in the ambient temperature and humidity information exceeds a preset humidity threshold.

[0130] In some embodiments, the control module 402 is specifically used to: when both dust suppression control command and cooling control command are generated, prioritize activating the dust suppression control command to execute the dust suppression spray operation; wherein the area covered by the dust suppression spray operation includes the shield beam and top beam of the target hydraulic support.

[0131] In some embodiments, the control module 402 is further configured to: after the dust suppression spraying operation ends, and if the cooling spraying conditions are met, activate a cooling control command to restore the cooling spraying operation in the area covered by the dust suppression spraying operation.

[0132] In some embodiments, the sensing module 401 is further configured to monitor the rate of change of ambient temperature and humidity information in real time; the control module 402 is further configured to adjust the spraying duration of the hydraulic support spraying device when the rate of change exceeds a preset rate.

[0133] In the hydraulic support spray cooling and dust suppression control device provided in this application embodiment, comprehensive perception of the working face conditions is achieved by collecting multi-source dynamic parameters such as the location of the coal mining machine, personnel positioning, and ambient temperature and humidity, laying an information foundation for precise control. Then, by judging the dust suppression and cooling conditions separately and generating corresponding instructions, the spray control can not only actively suppress dust sources, but also achieve on-demand targeted cooling according to the thermal environment needs of the actual location of personnel, effectively avoiding water waste and environmental degradation caused by aimless spraying. Finally, by setting a hierarchical relationship where dust suppression instructions take precedence over cooling instructions, the absolute priority of dust suppression operations during peak dust production periods is ensured, fundamentally guaranteeing the dust control effect. At the same time, the cooling function is intervened without affecting dust suppression, thereby synergistically improving the overall efficiency of environmental control in the fully mechanized mining face.

[0134] On the other hand, the present invention also provides a network controller, including a processor and a non-transitory computer-readable storage medium; the non-transitory computer-readable storage medium stores a computer program, which, when executed by the processor, implements the hydraulic support spray cooling and dust suppression control method as described above. This method includes: collecting dynamic parameters of the fully mechanized mining face, including coal mining machine location information, personnel positioning information, and ambient temperature and humidity information; generating a dust suppression control command when the dust suppression spray conditions are met based on the coal mining machine location information; generating a cooling control command when the cooling spray conditions are met based on the personnel positioning information and ambient temperature and humidity information; and controlling the start / stop state of the hydraulic support spray device according to the priority relationship between the dust suppression control command and the cooling control command, with the dust suppression control command having a higher priority than the cooling control command.

[0135] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling spray cooling and dust removal on hydraulic supports, characterized in that, The method includes: Collect dynamic parameters of the fully mechanized mining face, including coal mining machine location information, personnel positioning information, and environmental temperature and humidity information; If the dust suppression spray conditions are met based on the coal mining machine's location information, a dust suppression control command is generated. If the conditions for cooling spraying are met based on the personnel location information and the ambient temperature and humidity information, a cooling control command is generated. The start / stop status of the hydraulic support spray device is controlled according to the priority relationship between the dust suppression control command and the cooling control command, with the dust suppression control command having a higher priority than the cooling control command.

2. The hydraulic support spray cooling and dust removal control method according to claim 1, characterized in that, The step of generating a dust suppression control command when the dust suppression spray conditions are met based on the coal mining machine's position information includes: When the coal mining machine position information indicates that the coal mining machine has entered the target hydraulic support area, the dust suppression control command is output; The target hydraulic support area includes the current hydraulic support and adjacent hydraulic supports.

3. The hydraulic support spray cooling and dust removal control method according to claim 2, characterized in that, The dynamic parameters also include dust concentration information, and the method further includes: If the dust concentration exceeds a preset concentration threshold, the dust reduction control command will be output.

4. The hydraulic support spray cooling and dust removal control method according to any one of claims 1 to 3, characterized in that, The dynamic parameters also include hydraulic support motion information, and the method further includes: When the hydraulic support action information indicates that the current hydraulic support is performing a lowering, moving, or raising operation, the dust suppression control command is output.

5. The hydraulic support spray cooling and dust removal control method according to claim 1, characterized in that, The step of generating a cooling control command when the conditions for cooling spraying are met based on the personnel location information and the ambient temperature and humidity information includes: When the personnel positioning information indicates that a person is in the target hydraulic support area, and the temperature value in the ambient temperature and humidity information exceeds a preset temperature threshold, the cooling control command is output.

6. The hydraulic support spray cooling and dust removal control method according to claim 5, characterized in that, The method further includes: If the humidity value in the ambient temperature and humidity information exceeds a preset humidity threshold, the cooling control command will be prohibited from being output.

7. The hydraulic support spray cooling and dust removal control method according to claim 1, characterized in that, The step of controlling the start / stop status of the hydraulic support spraying device according to the priority relationship between the dust suppression control command and the cooling control command includes: If both the dust suppression control command and the cooling control command are generated, the dust suppression control command shall be activated first to execute the dust suppression spray operation; The dust suppression spray operation covers the area including the shield beam and top beam of the target hydraulic support.

8. The hydraulic support spray cooling and dust removal control method according to claim 7, characterized in that, After the dust suppression spraying operation is completed, the method further includes: When the cooling spray conditions are met, the cooling control command is activated to restore the cooling spray operation in the area covered by the dust suppression spray operation.

9. A hydraulic support spray cooling and dust removal control device, characterized in that, The device includes: The sensing module is used to collect dynamic parameters of the fully mechanized mining face, including coal mining machine location information, personnel positioning information, and environmental temperature and humidity information. The control module is used to generate dust suppression control commands when the dust suppression spray conditions are met based on the coal mining machine position information. The control module is also used to generate a cooling control command when it is determined that the cooling spray conditions are met based on the personnel positioning information and the ambient temperature and humidity information. The control module is used to control the start and stop status of the hydraulic support spray device according to the priority relationship between the dust suppression control command and the cooling control command, wherein the dust suppression control command has a higher priority than the cooling control command.

10. A hydraulic support spray cooling and dust removal control system, characterized in that, The system includes: Multiple hydraulic supports, with spray devices installed on the top beams and / or shield beams of the hydraulic supports; The coal mining machine positioning unit is configured to acquire the coal mining machine's position information. Personnel positioning unit, configured to acquire personnel positioning information; The environmental monitoring unit is configured to acquire ambient temperature and humidity information near the hydraulic support; The controller is connected to the coal mining machine positioning unit, the personnel positioning unit, the environmental monitoring unit, and the spray device, and is configured to execute the hydraulic support spray cooling and dust removal control method as described in any one of claims 1 to 8.

Images