Situation awareness system for mine building material conveying

Abstract

The invention relates to the technical field of coal mine long-distance transportation, and discloses a situation awareness system for mine building material conveying, which comprises a flow controller, a full-automatic adjusting device, an on-off device, an electromagnetic valve, a pressure transmitter and a blanking air locking assembly, and is characterized in that the flow controller is electrically connected with the full-automatic adjusting device; the adjusting module is used for generating an adjusting instruction based on compressed air parameters collected in real time; by arranging the flow controller, the full-automatic adjusting device, the pressure transmitter and other assemblies, state information of pressure, flow, temperature and the like of compressed air in a pipeline can be sensed in real time, automatic adjustment is conducted according to the information, materials and the compressed air are evenly mixed, safe and stable conveying is achieved, the occurrence probability of the pipe blocking phenomenon is effectively reduced, and the service life of the pipeline is prolonged. Meanwhile, the system is automatically controlled, manual intervention is not needed, the conveying efficiency and safety are improved, the pressure of compressed air is smaller than or equal to 0.6 MPa, and the system is suitable for most working conditions.

Description

Technical Field

[0001] The present application relates to the technical field of long-distance transportation of coal mines, and in particular to a situation awareness system for transporting mining building materials. Background Art

[0002] Long-distance pneumatic conveying technology for coal mines is an emerging high-tech in coal mines in recent years. It can transport dry concrete from the surface to any location underground safely and efficiently through pipeline technology. It has the advantages of small footprint, no dust or pollution during the transportation process, and simple and convenient maintenance.

[0003] However, this transportation process is an extremely complex process with strong timeliness. The internal state of the pipeline changes every second, which makes it difficult to control and prone to pipe blockage. The present invention provides a situational awareness system for the transportation of mining building materials, which can realize situational awareness of the internal state of the pipeline, monitor the pressure, temperature, flow and other information of the gas inside the pipeline in real time, and adjust it in a controllable manner to achieve uniform mixing of materials and compressed air, and flow safely and smoothly in the pipeline to the end. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present application provides a situation awareness system for transportation of mining building materials.

[0005] The present application provides a situational awareness system for mining building materials transportation using the following technical solutions:

[0006] A situation awareness system for conveying mining building materials, comprising a flow controller, a fully automatic regulating device, a switch, a solenoid valve, a pressure transmitter, and a material unloading air lock assembly, wherein the flow controller is electrically connected to the fully automatic regulating device and is used to generate regulating instructions based on compressed air parameters collected in real time; the fully automatic regulating device is connected to the switch and is used to control the compressed air flow according to the regulating instructions; the solenoid valve is electrically connected to the switch and is used to control the opening and closing of the switch; the pressure transmitter is arranged in the conveying pipeline and is used to detect the pipeline pressure in real time and feed it back to the flow controller; the material unloading air lock assembly is arranged at the material inlet and is used to adjust the unloading speed and prevent compressed air backflow; wherein, the system realizes analog control through the communication link of the host computer, PLC, and single-chip microcomputer, and the compressed air pressure is ≤0.6MPa.

[0007] Preferably, the flow controller includes a flow meter and a single-chip microcomputer. The flow meter dynamically measures the real-time pressure, flow and temperature of the compressed air through an integrator and transmits them to the single-chip microcomputer through a 4-20mA analog signal. The single-chip microcomputer has a pre-stored adjustment algorithm for generating adjustment instructions after comparing the collected parameters with the set parameters.

[0008] Preferably, the fully automatic regulating device is an electric regulating ball valve for mining, which controls the ball valve opening through a 4-20mA analog signal, has a regulating accuracy of 5-200m³ / h, and a regulating cycle of 3-20s.

[0009] Preferably, the unloading air lock component 6 is a stepless speed-variable rotary valve, and its speed adjustment range is 5-60r / min, which is used to match the conveying efficiency of 6-20m³ / h and the conveying pressure of 2-6bar.

[0010] Preferably, the control logic of the system includes: when the addition of material causes the compressed air flow to decrease, the pressure transmitter detects an increase in resistance, and the flow controller triggers the fully automatic regulating device to increase the opening to maintain a stable flow.

[0011] Preferably, the shutdown logic of the system includes: when the host computer issues a stop signal, the pressure transmitter and flow controller determine the material emptying status based on the pipeline resistance and flow data, and when the pressure drops to 0 and the flow is 0, the solenoid valve is controlled by the PLC to close the on-off switch.

[0012] Preferably, the switch is a pneumatic butterfly valve, and the solenoid valve controls the on-off of compressed air to achieve rapid opening and closing of the conveying pipeline.

[0013] Preferably, the system realizes dynamic adjustment of the mixing ratio of compressed air and material through real-time data interaction between the pressure transmitter and the flow controller, and the entire process does not require human intervention.

[0014] In summary, this application has the following beneficial technical effects:

[0015] The present invention is equipped with components such as a flow controller, a fully automatic adjustment device, and a pressure transmitter, which can sense the pressure, flow, temperature and other status information of the compressed air in the pipeline in real time, and automatically adjust according to this information to ensure uniform mixing of materials and compressed air, thereby achieving safe and smooth transportation and effectively reducing the probability of pipe blockage. At the same time, the system adopts automatic control and does not require human intervention, thereby improving transportation efficiency and safety. The compressed air pressure used is ≤0.6MPa, which is suitable for most working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic flow diagram of the present invention.

[0017] Explanation of the accompanying symbols: 1. Flow controller; 101. Flow meter; 102. Single chip microcomputer; 2. Automatic adjustment device; 3. Switch; 4. Solenoid valve; 5. Pressure transmitter; 6. Unloading air lock assembly. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 This application is described in further detail.

[0019] The present application embodiment discloses a situation awareness system for transporting mining building materials, referring to Figure 1 , including a flow controller 1, a fully automatic regulating device 2, a switch 3, a solenoid valve 4, a pressure transmitter 5, and a material unloading air lock component 6. The flow controller 1 is electrically connected to the fully automatic regulating device 2, and is used to generate regulating instructions based on the compressed air parameters collected in real time; the fully automatic regulating device 2 is connected to the switch 3, and is used to control the compressed air flow according to the regulating instructions; the solenoid valve 4 is electrically connected to the switch 3, and is used to control the opening and closing of the switch 3; the pressure transmitter 5 is arranged in the conveying pipeline, and is used to detect the pipeline pressure in real time and feed it back to the flow controller 1; the material unloading air lock component 6 is arranged at the material inlet, and is used to adjust the unloading speed and prevent the compressed air from flowing back; wherein, the system realizes analog control through the communication link of the host computer, PLC, and single-chip microcomputer 102, and the compressed air pressure is ≤0.6MPa.

[0020] Reference Figure 1 The flow controller 1 includes a flow meter 101 and a single-chip microcomputer 102. The flow meter 101 dynamically measures the real-time pressure, flow, and temperature of the compressed air through an integrator and transmits the signals to the single-chip microcomputer 102 through a 4-20 mA analog signal. The single-chip microcomputer 102 has a pre-stored adjustment algorithm for generating adjustment instructions after comparing the collected parameters with the set parameters.

[0021] Reference Figure 1 The fully automatic regulating device 2 is a mining electric regulating ball valve, which controls the ball valve opening through a 4-20mA analog signal, with an adjustment accuracy of 5-200m³ / h and an adjustment cycle of 3-20s.

[0022] Reference Figure 1 The unloading air lock component 6 is a stepless speed rotary valve with a speed adjustment range of 5 to 60 r / min, which is used to match the conveying efficiency of 6 to 20 m³ / h and the conveying pressure of 2 to 6 bar.

[0023] Reference Figure 1 ,The control logic of the system includes: when the addition of materials causes the compressed air flow to decrease, the pressure transmitter 5 detects the increase in resistance, and the flow controller 1 triggers the fully automatic adjustment device to increase the opening to maintain a stable flow.

[0024] Reference Figure 1 The system's shutdown logic includes: when the host computer issues a stop signal, the pressure transmitter 5 and the flow controller 1 determine the material emptying status based on the pipeline resistance and flow data. When the pressure drops to 0 and the flow is 0, the solenoid valve is controlled by the PLC to close the on-off switch 3.

[0025] Reference Figure 1 The on-off device 3 is a pneumatic butterfly valve, and the solenoid valve 4 controls the on-off of the compressed air to achieve rapid opening and closing of the conveying pipeline.

[0026] Reference Figure 1 The system realizes dynamic adjustment of the mixing ratio of compressed air and materials through real-time data interaction between the pressure transmitter 5 and the flow controller 1, and the entire process does not require human intervention.

[0027] The implementation principle of a situation awareness system for conveying building materials for mining in an embodiment of the present application is as follows: the situation awareness system for conveying building materials for mining is an automated system that monitors and adjusts the internal status of pipelines in real time during long-distance pneumatic conveying in coal mines to achieve safe and smooth material transportation. Its working principle revolves around parameter preset, system startup, dynamic adjustment, conveying control, and shutdown and finishing. The various components work together to complete the entire conveying process. Before the system is started, parameter setting is required. This is the basis for ensuring the stability of the conveying process. The staff sets a series of key parameters on the host computer according to actual conveying needs. The conveying efficiency is set between 6 and 20 m³ / h. This parameter determines the amount of material conveyed per unit time and needs to be determined based on the demand for building materials during underground construction. The conveying pressure is set between 2 and 6 bar. This pressure range satisfies the dynamic requirements for material flow within the pipeline while preventing excessive pressure from overloading the pipeline. The speed of the rotary valve in the material lock device 6 (R01-06) is set between 5 and 60 r / min. This speed setting is tailored to the material characteristics and conveying efficiency. Excessive speeds may cause the material to be discharged too quickly and mix unevenly with the compressed air, while excessive speeds may affect conveying efficiency. The conveying air volume is set between 15 and 40 m³ / min. Adequate air volume is crucial for smooth material delivery. After parameter settings are completed, the host computer accurately transmits these parameters to the fully automatic control device 2 (R01-02), providing an initial basis for system startup and operation. Once the parameters are set, the operator activates the long-distance pneumatic conveying system for mining building materials through the host computer interface, and the system enters the startup phase. The start signal is transmitted via the PLC (Programmable Logic Controller) to solenoid valve 4 (R01-05). As a key component for controlling the air supply, solenoid valve 4 (R01-05) swiftly responds to the command, opening air supply switch 3 (R01-03). This allows compressed air (pressure ≤ 0.6 MPa, commonly used underground) to flow through the pipeline, creating the necessary conditions for subsequent material transportation. Once the compressed air begins flowing through the pipeline, flow controller 1 (R01-01) immediately takes effect. Flow controller 1 (R01-06) consists of a flowmeter 101 and a single-chip microcomputer 102. Flowmeter 101 dynamically measures the current volume flow, pressure, and temperature of the compressed air in the pipeline using an internal integrator. Based on this real-time data, it calculates the volume, pressure, and temperature under standard conditions. Subsequently, the flow meter 101 outputs these key data to the single-chip microcomputer 102 in the form of a 4-20mA analog signal, realizing accurate monitoring of the initial state of the compressed air. After receiving the signal transmitted by the flow controller 1 (R01-01), the single-chip microcomputer 102 adjusts the opening of the fully automatic regulating device 2 (R01-02) based on the gas delivery volume (15-40m³ / min) preset by the host computer.Fully automatic regulating device 2 (R01-02) consists of a mining-grade electric regulating ball valve. Its opening is controlled via a 4-20mA analog signal input and output. Its regulation accuracy reaches 5-200m³ / h, and it adjusts every 3-20 seconds, enabling rapid response to changes in flow demand. During the regulation process, microcontroller 102 continuously compares the adjusted flow rate with the real-time flow and pressure values ​​transmitted by flow controller 1 (R01-01) and pressure transmitter 5 (R01-04). Through continuous feedback and adjustment, the system maintains the compressed air in the pipeline until it reaches a steady state, with parameters such as flow and pressure stabilizing within a preset range. Once the compressed air in the pipeline reaches a steady state, the rotary valve of the unloading air lock device 6 (R01-06) activates, and material begins to be added to the pipeline. The added material interacts with the compressed air, causing the compressed air velocity and flow rate to decrease, while simultaneously increasing the resistance in the pipeline. Pressure transmitter 5 (R01-04) keenly detects this change. At the same time, flow controller 1 (R01-01) also detects insufficient flow and feeds this information back to MCU 102. Based on this feedback, MCU 102 quickly issues instructions to adjust the opening of fully automatic control device 2 (R01-02), increasing the flow of compressed air to ensure uniform mixing of the material and compressed air, ensuring smooth forward conveyance of the material under the pressure of the compressed air. During the material conveying process, the system maintains dynamic situational awareness and regulation. Pressure transmitter 5 (R01-04) and flow controller 1 (R01-01) monitor pressure and flow changes in the pipeline in real time and continuously transmit this information to the PLC and host computer. The PLC and host computer analyze and assess the received data. If they detect that the pressure or flow rate deviates from the normal range, they promptly adjust the opening of the fully automatic regulating device 2 (R01-02) through the single-chip microcomputer 102. This ensures that the compressed air conditions consistently meet the material conveying requirements, ensuring uniform mixing and smooth flow of materials within the pipeline. When material conveying is nearing completion, the rotary valve of the unloading air lock device 6 (R01-06) closes, halting the addition of material to the pipeline. At this point, the resistance within the pipeline begins to decrease, and the compressed air velocity and flow rate begin to increase. The pressure transmitter 5 (R01-04) and flow controller 1 (R01-01), respectively, detect the reduced resistance and excess flow rate and transmit this information back to the single-chip microcomputer 102. MCU 102 then issues a command to adjust the opening of fully automatic control device 2 (R01-02), reducing the compressed air flow rate and allowing the compressed air to enter the air-blowing phase. This compressed air thoroughly clears any remaining material from the pipeline, preventing it from clogging. When the host computer issues a stop signal, the system enters the shutdown phase. Pressure transmitter 5 (R01-04) continues to monitor the resistance within the pipeline, while flow controller 1 (R01-01) measures the flow rate. The PLC and host computer use this real-time data to determine the material condition within the pipeline.When the pressure in the pipeline drops to a certain value and flow controller 1 (R01-01) detects a flow rate of zero, the system determines that no material remains in the pipeline. The PLC then transmits a shutdown signal to solenoid valve 4 (R01-05), which in turn closes air source switch 3 (R01-03), cutting off the compressed air supply. Pressure transmitter 5 (R01-04) reports a pressure of zero after closure, and flow controller 1 (R01-01) detects a flow rate of zero, completely halting the entire mining building materials conveying system. Throughout this operation, the system monitors the compressed air status in real time through components such as pressure transmitter 5 (R01-04) and flow controller 1 (R01-01). This information is then transmitted to the PLC and host computer for analysis and judgment, enabling real-time adjustments to components such as the fully automatic adjustment device 2 (R01-02) and the unloading air lock device 6 (R01-06). The entire process is fully automated, enabling precise sensing and control of the conveying situation without the need for human intervention. Furthermore, the system has no exposed rotating mechanical parts, and the air source pressure remains below 0.6 MPa during operation, ensuring high safety and suitability for most underground working conditions. It effectively resolves the pipe blockage problem commonly associated with traditional pneumatic conveying, ensuring the safe, efficient, and stable transportation of mining building materials.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0029] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0030] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0031] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A situational awareness system for conveying mining building materials, comprising: A flow controller (1), a fully automatic regulating device (2), a switch (3), a solenoid valve (4), a pressure transmitter (5), and a material discharge air lock component (6), characterized in that: the flow controller (1) is electrically connected to the fully automatic regulating device (2) and is used to generate a regulating instruction based on the compressed air parameters collected in real time; the fully automatic regulating device (2) is connected to the switch (3) and is used to control the compressed air flow according to the regulating instruction; the solenoid valve (4) is electrically connected to the switch (3) and is used to control the opening and closing of the switch (3); the pressure transmitter (5) is arranged in the conveying pipeline and is used to detect the pipeline pressure in real time and feed it back to the flow controller (1); the material discharge air lock component (6) is arranged at the material inlet and is used to adjust the material discharge speed and prevent the compressed air from flowing back; wherein, the system realizes analog control through the communication link of the host computer, PLC, and single-chip microcomputer (102), and the compressed air pressure is ≤0.6MPa.

2. The situational awareness system according to claim 1, characterized in that: The flow controller (1) includes a flow meter (101) and a single-chip microcomputer (102). The flow meter (101) dynamically measures the real-time pressure, flow rate, and temperature of the compressed air through an integrator, and transmits the information to the single-chip microcomputer (102) through a 4-20 mA analog signal. The single-chip microcomputer (102) has a pre-stored adjustment algorithm for generating an adjustment instruction after comparing the collected parameters with the set parameters.

3. The situational awareness system according to claim 1, characterized in that: The fully automatic regulating device (2) is an electric regulating ball valve for mining, which controls the ball valve opening through a 4-20mA analog signal, has a regulating accuracy of 5-200m³ / h, and a regulating cycle of 3-20s.

4. The situational awareness system according to claim 1, characterized in that: The unloading air lock component (6) is a stepless speed-variable rotary valve, and its speed adjustment range is 5 to 60 r / min, which is used to match the conveying efficiency of 6 to 20 m³ / h and the conveying pressure of 2 to 6 bar.

5. The situational awareness system according to claim 1, characterized in that: The control logic of the system includes: when the addition of material causes the compressed air flow rate to decrease, the pressure transmitter (5) detects an increase in resistance, and the flow controller (1) triggers the fully automatic regulating device to increase the opening to maintain a stable flow rate.

6. The situational awareness system according to claim 1, characterized in that: The shutdown logic of the system includes: when the host computer issues a stop signal, the pressure transmitter (5) and the flow controller (1) judge the material emptying state based on the pipeline resistance and flow data, and when the pressure drops to 0 and the flow is 0, the solenoid valve (4) is controlled by the PLC to close the switch (3).

7. The situational awareness system according to claim 1, characterized in that: The on-off device (3) is a pneumatic butterfly valve, and the solenoid valve (4) controls the on-off of compressed air to achieve rapid opening and closing of the conveying pipeline.

8. The situational awareness system according to claim 1, characterized in that: The system realizes dynamic adjustment of the mixing ratio of compressed air and material through real-time data interaction between the pressure transmitter (5) and the flow controller (1), and the entire process does not require manual intervention.

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