Coal mine underground pump station control system and method

Abstract

The invention provides a coal mine underground pump station control system and method, and particularly relates to the technical field of coal mines. The system comprises a master station control box, at least two along-line substations, a pilot control box and a display screen. At least one CS line is mounted on the main station control box so as to be connected with the line substations. The along-line substation comprises a substation controller, a sensor module and pump station equipment, the sensor module collects operation information data of the pump station equipment, and the pump station equipment is a combination of at least two emulsification pumps and one emulsion tank or a combination of at least two atomizing pumps and one water tank. And the substation controller receives the operation information data and forwards the operation information data to the master station control box. The along-line control board of the main station control box receives data, the main control board generates equipment control information and start-stop signals according to the data and transmits the equipment control information and the start-stop signals to the substation controller and the pilot control box, and the display screen displays operation information, the equipment control information and the start-stop signals. The system solves the problems of data intercommunication incapability and dispersed control caused by non-uniform communication protocols.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, and more specifically, to a control system and method for underground pump stations in coal mines. Background Technology

[0002] In fully mechanized coal mining faces, emulsion pump stations and spray pump stations are key pieces of equipment, responsible for providing power to hydraulic supports and controlling dust, respectively. Their control performance directly affects coal mining efficiency and operational safety. With the increasing complexity of underground working environments, such as extended working faces and increased equipment, the industry has placed higher demands on the reliability, real-time performance, and intelligence of pump station systems. However, in practice, because different pump station equipment is often supplied by multiple manufacturers, and each substation uses diverse communication protocols (such as CAN, 485, serial ports, etc.), internal data cannot be shared, creating information silos. This leads to specific defects such as scattered control commands and delayed maintenance responses, hindering the advancement of intelligent coal mining.

[0003] Traditional technologies for pump station control typically employ a modular design approach, using methods such as CAN bus or serial communication protocols to monitor local devices. While this method can generally meet data acquisition and start-stop control requirements at a single pump station level, the mixed communication protocols prevent overall system data integration and centralized management, leading to data isolation between substations and inconsistent control commands. Specific shortcomings include: high costs due to the need to handle different protocol devices individually during maintenance; and the inability to share global data in real time, limiting fault prediction and automation levels, resulting in poor system adaptability in complex downhole environments.

[0004] In conclusion, solving the technical problems of data incompatibility and decentralized control caused by inconsistent communication protocols is an urgent issue that needs to be addressed. Summary of the Invention

[0005] The main objective of this invention is to provide a control system and method for underground pumping stations in coal mines, so as to at least solve the technical problems of data incompatibility and decentralized control caused by inconsistent communication protocols, thereby realizing data monitoring and centralized control of equipment such as emulsifying pumps and spray pumps.

[0006] To achieve the above objectives, the present invention provides a control system and method for underground pump stations in coal mines.

[0007] In a first aspect, the present invention provides a control system for an underground pumping station in a coal mine, the system comprising: The control system includes a main station control box, at least two branch stations along the line, a pilot control box, and a display screen. The main station control box is equipped with at least one CS line, and each CS line connects to at least two branch stations along the line; Each of the aforementioned substations along the line includes a substation controller, a sensor module, and pumping station equipment; the sensor module is installed on the pumping station equipment to collect the operating information data of the pumping station equipment; wherein, the pumping station equipment corresponding to each substation along the line adopts one of the following two configurations: (1) a combination of at least two emulsifying pumps and an emulsion tank, wherein the emulsion tank is connected to each emulsifying pump through a pipeline; (2) a combination of at least two spray pumps and a water tank, wherein the water tank is connected to each spray pump through a pipeline; The substation controller is connected to the sensor module and the main station control box respectively. The substation controller is used to connect to the sensor module through the input interface to receive the operation information data, and forward the operation information data to the main station control box through the CS line. The main station control box includes a line control board and a main control board; the line control board and the main control board are connected, and both the line control board and the main control board are connected to the substation controller; the main control board is also connected to the pilot control box and the display screen respectively. The control board along the line is used to receive the operation information data. The main control board is used to generate corresponding equipment control information and start / stop signals for the emulsifying pump or spray pump based on the operation information data. The main control board is used to transmit the equipment control information to the corresponding substation controller and transmit the start / stop signals to the pilot control box. The display screen is used to display the operation information data, equipment control information, and start / stop signals for the emulsifying pump or spray pump.

[0008] Specifically, the substation controller includes a control baseboard and an I / O board; The I / O board provides a wired or wireless interface to connect to the sensor module, and the I / O board is used to receive the operation information data collected by the sensor module; The control board and the IO board are connected via an internal bus. The control board is used to process the operation information data and communicates with the main station control box via the CS line.

[0009] Specifically, the sensor module includes an oil pressure sensor, an oil level sensor, and an oil temperature sensor; the operating information data includes oil pressure data, oil temperature data, and oil level data of the emulsifying pump and / or the spray pump.

[0010] Specifically, the sensor module further includes a liquid level sensor and a pressure sensor; the operating information data also includes the liquid level information of the emulsion in the emulsion tank, the liquid level information of the water in the water tank, the total outlet pressure of the emulsion pipeline, and the total outlet pressure of the water pipeline.

[0011] Specifically, the pumping station equipment at the substations along the line includes at least two emulsifying pumps and one emulsion tank; the emulsion tank is connected to all the emulsifying pumps through the emulsion pipeline; wherein the emulsion tank is used to supply emulsion to each emulsifying pump.

[0012] Specifically, the pumping station equipment at the substation along the line includes at least two spray pumps and a water tank; the water tank is connected to all the spray pumps through the water pipes, and the water tank is used to provide a water source for each spray pump.

[0013] Specifically, the control system also includes an integrated switch box; The pilot control box is connected to the integrated switch box, which includes multiple switch controllers; wherein each switch controller is used to control the start / stop state of the corresponding emulsifying pump or spray pump according to the start / stop signal.

[0014] Specifically, the CS line uses a six-core wire.

[0015] In a second aspect, the present invention provides a control method for an underground pumping station in a coal mine, wherein the control method is applied to the control system described in the first aspect, and the control method includes: Operational information data is acquired by the sensor modules in each substation along the line, and the operational information data is transmitted to the control board of the substation controller according to a first set cycle through the IO board of the substation controller. The control boards of all substation controllers upload the operation information data to the control boards along the line of the main station control box according to the second set cycle; wherein, all substation controllers are connected to the main station control box along the line via CS. The control boards along the main station control box transmit the operation information data to the main control board of the main station control box according to the third set cycle. The main control board of the main station control box processes the operation information data according to the fourth set cycle to obtain the result data, and displays the result data through the display screen; the result data is used to control the emulsifying pump or the spraying pump; wherein, the result data includes equipment control information and start / stop signals of the emulsifying pump or the spraying pump.

[0016] Specifically, after the main control board of the main station control box processes the operation information data according to the fourth preset cycle to obtain the result data, the process further includes: the pilot control box receiving the start / stop signal of the emulsifying pump or spray pump generated by the main control board; the pilot control box sending an equipment status detection signal to the integrated switch box; the integrated switch box performing self-diagnosis based on the equipment status detection signal, generating an equipment status detection result and returning it to the pilot control box; and the pilot control box determining whether to allow the execution of the switch control operation corresponding to the start / stop signal based on the safety status of the equipment status detection result.

[0017] This application provides a coal mine underground pump station control system and method. The system comprises a main control box, at least two substations along the pump line, a pilot control box, and a display screen. The main control box is equipped with at least one CS (Search Engine Control) line to connect the substations. Each substation consists of a substation controller, sensor modules, and pump station equipment. The sensor modules are installed on the pump station equipment to collect operational data. The pump station equipment is either at least two emulsifying pumps and one emulsion tank connected by pipelines, or at least two spray pumps and one water tank connected by pipelines. The substation controller receives data from the sensor modules via an input interface and forwards it to the main control box via the CS line. The substation control board in the main control box receives the data and generates equipment control information and start / stop signals, which are transmitted to the substation controllers and the pilot control box. The display screen shows the operational information, equipment control information, and start / stop signals. This system effectively solves the problems of data incompatibility and decentralized control caused by inconsistent communication protocols. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the principle structure of a coal mine underground pump station control system in a specific embodiment of the present invention; Figure 2 This is a schematic diagram illustrating an application of the coal mine underground pump station control system in a specific embodiment of the present invention; Figure 3 This is a schematic flowchart of a coal mine underground pump station control method in a specific embodiment of the present invention.

[0019] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0022] In this invention, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0023] The coal mine underground pump station control system and method provided in this application adopt a distributed connection method along the CS line to connect on-site equipment such as emulsifying pumps and spray pumps to the main control box through communication between the CS line substations. That is, the communication method along the CS line can solve the communication problem between various devices in the fully mechanized mining face pump station system, effectively solving the problem of data incompatibility and decentralized control caused by inconsistent communication protocols, thereby realizing data monitoring and centralized control of emulsifying pumps, spray pumps and other equipment.

[0024] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Currently, different pump stations in fully mechanized mining faces use different communication methods for their substation control. For example, one pump station uses CAN / serial communication protocols, while other pump stations use a mix of RS-485, serial port, Ethernet, and CAN communication. This results in inconsistent data exchange, lack of centralized control, high maintenance costs, and low levels of intelligence. Therefore, this application provides a coal mine underground pump station control system to improve the overall performance of the control system. Specifically, the coal mine underground pump station control system of this invention, through its communication layout, enables each substation to report its own data to the master station. Data exchange is achieved between substations, between master stations, and between the master station and the pilot control box. All emulsifying pumps, spray pumps, and other equipment are centrally managed by the master station for maintenance, local, and automatic centralized control, and then the control is sent to the pilot control box to start and stop the equipment at each pump station.

[0026] The control system for the underground pump station in this coal mine will be described below with reference to some specific embodiments.

[0027] Specific embodiments of the coal mine underground pump station control system involved in this invention are as follows: Figure 1As shown, the coal mine underground pump station control system includes a main station control box, at least two substations along the line, a pilot control box, and a display screen; the main station control box is mounted on at least one CS line, and each CS line connects to the at least two substations along the line; each substation along the line includes a substation controller, a sensor module, and pump station equipment; the sensor module is installed on the pump station equipment to collect the operating information data of the pump station equipment; wherein, the pump station equipment corresponding to each substation along the line adopts one of the following two configurations: (1) a combination of at least two emulsifying pumps and an emulsion tank, wherein the emulsion tank is connected to each emulsifying pump through a pipeline; (2) a combination of at least two spray pumps and a water tank, wherein the water tank is connected to each spray pump through a pipeline; the substation controller is connected to the sensor module and the main station control box respectively, wherein the substation controller This system is used to connect to the sensor module via an input interface to receive the operational information data, and to forward the operational information data to the main station control box via the CS line. The main station control box includes a line control board and a main control board. The line control board and the main control board are connected, and both the line control board and the main control board are connected to the substation controller. The main control board is also connected to the pilot control box and the display screen. The line control board is used to receive the operational information data, and the main control board is used to generate corresponding equipment control information and start / stop signals for the emulsifying pump or spray pump based on the operational information data. The main control board is used to transmit the equipment control information to the corresponding substation controller and transmit the start / stop signals to the pilot control box. The display screen is used to display the equipment control information and the start / stop signals for the emulsifying pump or spray pump.

[0028] Specifically, the substation controller includes a control board and an I / O board; the I / O board provides a wired or wireless interface to connect to the sensor module, and the I / O board is used to receive the operation information data collected by the sensor module; the control board and the I / O board are connected through an internal bus, and the control board is used to process the operation information data and communicate with the main station control box through the CS line.

[0029] Specifically, the sensor module includes an oil pressure sensor, an oil level sensor, and an oil temperature sensor; The operational information data includes the oil pressure data, oil temperature data, and oil level data of the emulsifying pump and / or the spray pump.

[0030] Specifically, the sensor module further includes a liquid level sensor and a pressure sensor; the operating information data also includes the liquid level information of the emulsion in the emulsion tank, the liquid level information of the water in the water tank, the total outlet pressure of the emulsion pipeline, and the total outlet pressure of the water pipeline.

[0031] Specifically, the pumping station equipment at the substations along the line includes at least two emulsifying pumps and one emulsion tank; the emulsion tank is connected to all the emulsifying pumps through the emulsion pipeline; wherein the emulsion tank is used to supply emulsion to each emulsifying pump.

[0032] Specifically, the pumping station equipment at the substation along the line includes at least two spray pumps and a water tank; the water tank is connected to all the spray pumps through the water pipes, and the water tank is used to provide a water source for each spray pump.

[0033] Specifically, the control system further includes an integrated switch box; the pilot control box is connected to the integrated switch box, and the integrated switch box includes multiple switch controllers; wherein each switch controller is used to control the start / stop state of the corresponding emulsifying pump or spray pump according to the start / stop signal.

[0034] Specifically, the CS line uses a six-core wire.

[0035] In implementation, the underground pump station control system in a coal mine includes a main control box, at least two substations along the pump line, a pilot control box, and a display screen. The main control box establishes communication connections with each substation along the pump line via at least one CS (Content Control System) line. The CS line uses a six-core cable, with four cores for data transmission and two cores as backups, supporting 10Gbps high-speed Ethernet communication and possessing anti-interference capabilities. Each substation along the pump line includes a substation controller, sensor modules, and pump station equipment. The substation controller connects to the sensor modules via an input interface and communicates with the main control box via the CS line interface. The main control box internally includes a control board along the pump line and a main control board. The control boards along the pump line and the main control board are connected via an internal bus. The main control board is also connected to the pilot control box and the display screen. The pilot control box connects to a comprehensive switch box. The comprehensive switch box includes multiple switch controllers, each of which directly controls the start / stop status of the corresponding emulsifying pump or spray pump through an electrical circuit.

[0036] The pumping station equipment employs one of two configurations: the first configuration includes at least two emulsifying pumps and an emulsion tank, with the tank connected to all pumps via emulsion pipelines to supply emulsion to each pump; the second configuration includes at least two spray pumps and a water tank, with the tank connected to all spray pumps via water pipelines to supply water to each pump. Sensor modules are directly mounted on the pumping station equipment to collect operational information data; the substation controller receives this data and forwards it to the main station control box via the CS line.

[0037] Specific implementation of substation controller and sensor module: The substation controller consists of a control board and an I / O board. The I / O board provides wired or wireless interfaces (such as ZigBee or WiFi) to connect to the sensor modules. Wired interfaces use RJ45 or terminal blocks, while wireless interfaces use the 2.4GHz frequency band for communication. The I / O board receives operational information data collected by the sensor modules. The control board and I / O board are connected via an internal bus (such as CAN or SPI). The control board preprocesses the operational information data (such as data filtering and format conversion) and communicates with the main control box via the Modbus TCP protocol along the CS line. The control board, as the core of the substation control, coordinates data acquisition and transmission, ensuring real-time performance.

[0038] The sensor module includes an oil pressure sensor, an oil level sensor, an oil temperature sensor, a liquid level sensor, and a pressure sensor. The oil pressure sensor, oil level sensor, and oil temperature sensor are installed at designated locations in the oil tank of the emulsion pump or spray pump to collect oil pressure, oil level, and oil temperature data. The liquid level sensor is installed inside the emulsion tank or water tank to collect emulsion or water level information. The pressure sensor is installed at the main outlet of the emulsion pipeline or water pipeline to collect pipeline pressure data. The sensor module uses a 4-20mA current signal or RS-485 digital signal output and connects to the I / O board interface via a shielded cable to reduce downhole electromagnetic interference.

[0039] Data processing and control logic of the main station control box: The control boards along the main control box receive operational information data uploaded by each substation controller via the CS line. These control boards verify and buffer the data before transmitting it to the main control board via the PCIe bus. The main control board uses an ARM Cortex-A series processor and runs a Linux operating system. It processes the operational information data as follows: First, it uses a threshold comparison algorithm (e.g., setting the oil temperature threshold range to -10℃ to 80℃) to detect data anomalies; second, it applies a moving average filtering algorithm to smooth data fluctuations; finally, based on the processing results, it generates equipment control information (e.g., adjusting pump speed parameters) and start / stop signals (e.g., switching commands). The equipment control information is fed back to the corresponding substation controller via the control boards along the line, and the start / stop signals are transmitted to the pilot control box via the RS-232 interface.

[0040] The display screen uses a TFT LCD touch screen and connects to the main control board via an HDMI interface. It displays real-time operating information data (such as oil pressure values ​​and liquid level curves), equipment control information (such as speed settings), and start / stop signal status (such as "Running" or "Stopped"). The display content is presented in a graphical interface, supporting interactive queries by operators.

[0041] Implementation of security control mechanisms: After receiving the start / stop signal from the main control board, the pilot control box sends a device status detection signal to the integrated switch box. This detection signal is a 16-byte digital message containing a start character, device address, command code, data field, and checksum. The integrated switch box performs self-diagnosis based on the detection signal: the switch controller detects the contact status (closed or open), load current value (mA), and insulation resistance value (kΩ); the diagnostic results are returned to the pilot control box. The pilot control box uses state machine logic to determine the safety status: if the contact status is closed, the load current is within the range of 500–2000mA, and the insulation resistance is greater than 50kΩ, it is considered safe, and the start / stop signal is allowed; otherwise, the signal is blocked, and an audible and visual alarm is triggered. The switch controller in the integrated switch box uses relays or solid-state switches to control the power supply to the emulsifying pump or spray pump according to the start / stop signal.

[0042] This embodiment solves the data interoperability problem of the pump station system through CS-based standardized communication. The main station control box centrally processes data to achieve automatic control of the emulsifying pump and spray pump. The sensor module monitors the equipment status in real time, improving fault prediction capabilities; the safety detection mechanism of the pilot control box ensures safe operation underground. The system components adopt a mining explosion-proof design, and the materials are stainless steel or engineering plastics, adapting to the harsh underground environment. Those skilled in the art can select standard industrial components (such as a Siemens PLC as the main control board) to complete the system construction based on the above description.

[0043] Optionally, "CS line" typically refers to the lines or connections within the CENTUM CS series Distributed Control System (DCS). The coal mine underground pump station control system of this invention employs a distributed connection method based on the CS line, which solves the communication problem between various devices in the fully mechanized mining face pump station control system, thereby enabling data monitoring and centralized control of emulsifying pumps, spray pumps, and other equipment.

[0044] In this embodiment of the invention, the CS line uses a six-core cable. A six-core cable consists of six conductors, four of which are used for data transmission, and two are spares or used for other functions. Category 6 network cables are suitable for high-speed Ethernet, supporting data transmission rates up to 10Gbps, and have good anti-interference performance.

[0045] In some embodiments, the master station control box includes a line control board and a main control board; the line control board receives operation information data, and the main control board of the master station generates corresponding equipment control information based on the operation information data and transmits the equipment control information to the corresponding substation controller; the main control board of the master station control box is connected to the pilot control box, and the main control board is used to generate start / stop signals for controlling the emulsifying pump or spray pump based on the feedback information from the pilot control box.

[0046] The master station control box in this invention is an intrinsically safe master station, which achieves explosion protection by limiting the energy in the circuit and adopts a low voltage and low current design.

[0047] In one embodiment, such as Figure 2 As shown, a main station control box is equipped with four CS lines. Each line connects to three substations: substation 1, substation 2, and substation 3. Substation 1 includes emulsifying pump 1, emulsifying pump 2, and emulsion tank 1. Emulsion tank 1 is connected to emulsifying pump 1 and emulsifying pump 2 via emulsion pipelines, providing emulsion to meet the operational requirements of emulsifying pump 1 and emulsifying pump 2. Substation 2 includes emulsifying pump 3, emulsifying pump 4, and emulsion tank 2. Emulsion tank 2 is connected to emulsifying pump 3 and emulsifying pump 4 via emulsion pipelines, providing emulsion to meet the operational requirements of emulsifying pump 3 and emulsifying pump 4. Substation 3 along the line includes spray pump 1, spray pump 2 and water tank 1. Water tank 1 is connected to spray pump 1 and spray pump 2 through water pipes. Water tank 1 provides water source for spray pump 1 and spray pump 2 to meet their working needs.

[0048] The sensor module of this invention, installed on pumping station equipment, includes an oil pressure sensor, an oil level sensor, an oil temperature sensor, a liquid level sensor, and a pressure sensor. The oil pressure sensor, oil level sensor, and oil temperature sensor are installed at appropriate locations in the oil tank of the emulsifying pump or spray pump to acquire the oil pressure, oil level, and oil temperature of the emulsifying pump or spray pump. For example, a P100 oil temperature sensor is used. The liquid level sensor installed in the emulsion tank is used to detect the liquid level of the emulsion in the emulsion tank, and the liquid level sensor installed in the water tank is used to detect the liquid level of the water in the water tank. The pressure sensor installed at the total outlet of the emulsion pipeline at each substation along the line is used to collect the total outlet pressure of the emulsion pipeline; the pressure sensor installed at the total outlet of the water pipeline at each substation along the line is used to collect the total outlet pressure of the water pipeline. Correspondingly, the operating information data includes oil pressure data, oil temperature data, and oil level data of the emulsifying pump and / or spray pump, as well as the liquid level of the emulsion in the emulsion tank, the liquid level of the water in the water tank, the total outlet pressure of the emulsion pipeline, and the total outlet pressure of the water pipeline.

[0049] In some other embodiments of the invention, the substations along the route also include other equipment, such as water treatment equipment, automatic proportioning equipment, high-pressure backwashing equipment, return liquid filtration stations, etc.

[0050] The substation controller of the present invention includes a control base plate and an I / O board, and the sensor module is connected to the interface of the I / O board via a wired or wireless connection. The I / O board serves as the input / output interface of the substation controller, and the input interface on the I / O board is used to acquire information data obtained by the sensors.

[0051] The operation information data collected by the sensor modules of the substations along the line is transmitted to the corresponding substation controller. The substation controller obtains the operation information data through the input interface on the IO board and transmits the operation information data to the control board of the substation controller. The control board of the substation controller forwards the operation information data to the control board along the line of the main station control box. The main control board processes all the received operation information data from the control board along the line and displays the relevant information on the display screen. The relevant information includes the operation information data and the processing result information.

[0052] The coal mine underground pump station control system of this invention also includes an integrated switch box and a frequency converter. A pilot control box connects the integrated switch box and the frequency converter. The integrated switch box includes multiple switch controllers, each used to control the start / stop status of a corresponding emulsifying pump or spray pump based on start / stop signals. The pilot control box actively sends detection signals to the integrated switch box and controls the integrated switch box based on the detection results. The pilot control box enables the detection of knobs and the start / stop control of other equipment such as emulsifying pumps and spray pumps.

[0053] It is understood that the connection methods of the various devices (such as the main control board, the line control board, the substation controller, etc.) in this embodiment include electrical connection and communication protocol connection. The specific connection method can be selected according to the actual situation, and will not be elaborated here.

[0054] The coal mine underground pump station control method in this embodiment of the invention, such as... Figure 3 As shown, it includes: Step S100: Obtain operation information data through the sensor module in each substation along the line, and transmit the operation information data to the control board of the substation controller according to the first set cycle through the IO board of the substation controller.

[0055] In some embodiments, when the substation along the line includes at least two emulsifying pumps and one emulsion tank, the sensor module in the substation acquires the operating information data, which are the oil pressure data, oil temperature data, and oil level data acquired by the oil pressure sensor, oil level sensor, and oil temperature sensor of the emulsifying pump in the substation, respectively. The liquid level sensor of the emulsion tank collects the liquid level data of the emulsion, and the pressure sensor at the total outlet of the emulsion pipeline acquires the pressure data of the emulsion pipeline.

[0056] In some embodiments, when the substation along the line includes at least two spray pumps and a water tank, the sensor module in the substation obtains the operating information data, which are the oil pressure data, oil temperature data and oil level data obtained by the oil pressure sensor, oil level sensor and oil temperature sensor of the spray pump in the substation respectively, the water level sensor of the water tank collects the water level data, and the pressure sensor of the water pipeline outlet obtains the pressure data of the water pipeline.

[0057] In some embodiments, when the substations along the route include other equipment, the sensor modules in the substations along the route acquire the corresponding information data.

[0058] In some embodiments, the I / O board of the substation controller transmits operating information data to the control board of the substation controller according to a first set period (e.g., 50ms).

[0059] Step S200: The control boards of all substation controllers upload the operation information data to the line control board of the main station control box according to the second set cycle; All substation controllers are connected to the main station control box via the CS line.

[0060] In some embodiments, the control board of the substation controller corresponding to the emulsifying pump reports operating information data to the control board along the main station control box according to a second preset period (e.g., 100ms); similarly, the control board of the substation controller corresponding to the spray pump reports operating information data to the control board along the main station control box according to a second preset period (e.g., 100ms), and the control boards of the substation controllers corresponding to other devices report operating information data to the control board along the main station control box according to a second preset period (e.g., 100ms). It is understood that all substation controllers forward and report operating information data to the control board along the CS line according to the second preset period.

[0061] Step S300: The control boards along the line of the main station control box transmit the operation information data to the main control board of the main station control box according to the third set cycle.

[0062] In some embodiments, the line control board receives operating information data from the substation controllers of the emulsifying pump, the substation controllers of the spray pump, and other equipment substation controllers, and then sends it uniformly to the main control board of the main station control box according to a third set period (e.g., 1000ms) so that the main control board can process the information data.

[0063] Step S400: The main control board of the main station control box processes the operation information data according to the fourth set cycle to obtain the result data, and displays the result data through the display screen; The resulting data is used to control the emulsification pump or the spray pump.

[0064] In some embodiments, after receiving the operation information data from the control boards along the line, the main control board of the main station control box processes the operation information data according to a fourth preset cycle (e.g., 2000ms), and displays the operation information data and result data on a display screen. The result data includes equipment control information and start / stop signals for the emulsifying pump or spray pump.

[0065] Optionally, the coal mine underground pump station control method in this embodiment of the invention further includes, after the main control board of the main station control box processes the operating information data according to a fourth preset cycle to obtain the result data, the following steps are also included: the pilot control box receives the start / stop signal of the emulsifying pump or spray pump generated by the main control board; the pilot control box sends an equipment status detection signal to the integrated switch box; the integrated switch box performs self-diagnosis based on the equipment status detection signal, generates an equipment status detection result, and returns it to the pilot control box; the pilot control box determines whether to allow the execution of the switch control operation corresponding to the start / stop signal based on the safety status of the equipment status detection result.

[0066] In some embodiments, when the pilot control box receives the start / stop signal of the emulsifying pump or spray pump generated by the main control board, it sends an equipment status detection signal to the switch in the integrated switch box. If the detection result is normal, the corresponding switch in the integrated switch box is controlled according to the start / stop signal. If the equipment status detection result is abnormal, it is not necessary to control the corresponding switch in the integrated switch box according to the start / stop signal to start / stop the corresponding spray pump, emulsifying pump, etc. The detection result of the pilot control box is transmitted to the main control board of the main station control box according to the fifth set cycle (e.g., 50ms), and the main control board still processes the detection result according to the fourth set cycle to display it on the screen.

[0067] Specifically, the start / stop trigger of the main station control box is achieved through the following two paths: Path 1: Main station actively controls the path After the main control board of the main station processes the logic, it sends the signal to the pilot control box. After receiving the start / stop signal, the pilot control box sends the equipment status detection signal to the integrated switch box to obtain the detection result of the integrated switch box. The pilot control box determines whether the system is functioning correctly based on the test results: If the test results are normal, the pilot control box controls the switch in the integrated switch box to start the corresponding emulsifying pump or spray pump; if the test results are abnormal, the pilot control box blocks the start / stop signals to ensure that the pump station equipment is in a stopped state. For example, after receiving the test results, the pilot control box executes threshold comparison logic, such as requiring the switch to be closed, the load current to be within the range of 500–2000mA, and the insulation resistance to be greater than 50kΩ; if all parameters meet the standards, the system is deemed to be in a safe state, allowing start / stop operations to be performed; otherwise, it blocks the operation and triggers an alarm.

[0068] Path 2: Substation reporting control path The substation controller reports start and stop information to the control boards along the line. The main control board processes the start and stop information from the control boards along the line and then sends it to the pilot control box. After receiving the start / stop information, the pilot control box also sends an equipment status detection signal to the integrated switch box and obtains the detection results; Based on the test results: if the feedback is normal, start the corresponding emulsification pump or spray pump; if the feedback is abnormal, stop the pump station equipment from starting.

[0069] Both paths utilize a unified safety detection mechanism in the pilot control box to ensure the safety of pump station equipment control.

[0070] The coal mine underground pump station control method in this embodiment of the invention further includes: when the system needs a program update, the main station control box first enters an active maintenance state, and then the main station control box guides the substations along the line to enter a passive maintenance state. The substation controllers of the substations along the line then control the emulsifying pump, spray pump and other equipment to enter a passive maintenance state respectively. The equipment in the maintenance state completes the program update according to the update program software rules.

[0071] The coal mine underground pump station control system of this invention provides centralized maintenance and automatic control of emulsifying pumps, spray pumps, and other equipment through a pilot control box. Each substation along the line reports and maintains its equipment information through the CS (System-on-Line) system. Alternatively, each substation's controller forwards information data, sends control information to the main control box, and performs program upgrades and maintenance. The main control board along the line is responsible for communication status monitoring, emergency stop detection, data forwarding, passive maintenance, and substation start / stop reporting. The main control board of the main control box enables data interoperability, centralized data display, and automatic centralized control.

[0072] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0073] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A coal mine underground pump station control system, characterized in that: the control system comprises a master control box, at least two line stations, a pilot control box and a display screen; the master control box is mounted with at least one CS line, and each CS line is connected with the at least two line stations; each line station comprises a line station controller, a sensor module and a pump station device; the sensor module is mounted on the pump station device to collect operation information data of the pump station device; wherein the pump station device corresponding to each line station adopts one of the following two configurations: (1) a combination of at least two emulsion pumps and one emulsion tank, the emulsion tank being connected with each emulsion pump through a pipeline; (2) a combination of at least two spray pumps and one water tank, the water tank being connected with each spray pump through a pipeline; the line station controller is connected with the sensor module and the master control box, wherein the line station controller is used to connect the sensor module through an input interface to receive the operation information data, and to forward the operation information data to the master control box through the CS line; the master control box comprises a line control board and a master control board; the line control board and the master control board are connected, and both the line control board and the master control board are connected with the line station controller, and the master control board is further connected with the pilot control box and the display screen; wherein the line control board is used to receive the operation information data, the master control board is used to generate corresponding device control information and start-stop signals of emulsion pumps or spray pumps according to the operation information data, the master control board is used to transmit the device control information to the corresponding line station controller and transmit the start-stop signals to the pilot control box, and the display screen is used to display the operation information data, the device control information and the start-stop signals of emulsion pumps or spray pumps. 2.The coal mine underground pump station control system according to claim 1, characterized in that: the line station controller comprises a control base plate and an IO board; the IO board is provided with a wired or wireless interface to connect the sensor module, and the IO board is used to receive the operation information data collected by the sensor module; the control base plate and the IO board are connected through an internal bus, and the control base plate is used to process the operation information data and communicate with the master control box through the CS line. 3.The coal mine underground pump station control system according to claim 1, characterized in that: the sensor module comprises an oil pressure sensor, an oil level sensor and an oil temperature sensor; the operation information data comprises oil pressure data, oil temperature data and oil level data of the emulsion pump and / or the spray pump. 4.The coal mine underground pump station control system according to claim 3, characterized in that: the sensor module further comprises a liquid level sensor and a pressure sensor; the operation information data further comprises liquid level information of emulsion in the emulsion tank, liquid level information of water in the water tank, total outlet pressure of the emulsion pipeline and total outlet pressure of the water pipeline. 5.The coal mine underground pump station control system according to claim 4, characterized in that: When the pump station equipment of the along-line substation comprises at least two emulsion pumps and an emulsion tank, the emulsion tank is connected to all the emulsion pumps through the emulsion pipeline, and the emulsion tank is used to provide emulsion for each emulsion pump.

6. The coal mine underground pump station control system according to claim 4, characterized in that: When the pump station equipment of the along-line substation comprises at least two emulsion pumps and an emulsion tank, the emulsion tank is connected to all the emulsion pumps through the emulsion pipeline, and the emulsion tank is used to provide emulsion for each emulsion pump.

7. The coal mine underground pump station control system according to claim 4, characterized in that: The control system further comprises a comprehensive switch box; The pilot control box is connected to the comprehensive switch box, and the comprehensive switch box comprises a plurality of switch controllers; wherein each switch controller is used to control the start-stop state of the corresponding emulsion pump or spray pump according to the start-stop signal.

8. The underground coal mine pump station control system of claim 1, wherein, The CS along line adopts six-core wire.

9. A method of controlling a coal mine underground pump station, characterised by, The method is suitable for the coal mine underground pump station control system according to any one of claims 1-8, and the method comprises: The sensor module in each along-line substation acquires operation information data, and the operation information data is transmitted to the control substrate of the substation controller according to a first set period through the IO board of the substation controller; The control substrates of all the substation controllers upload the operation information data to the along-line control board of the main station control box according to a second set period; wherein all the substation controllers are connected to the main station control box through the CS along line; The along-line control board of the main station control box transmits the operation information data to the main control board of the main station control box according to a third set period; The main control board of the main station control box processes the operation information data to obtain result data according to a fourth set period, and displays the result data through a display screen; the result data is used to control the emulsion pump or spray pump; wherein the result data comprises device control information and start-stop signals of the emulsion pump or spray pump.

10. The coal mine underground pump station control method of claim 9, wherein, After the main control board of the main station control box processes the operation information data to obtain result data according to a fourth set period, the method further comprises: The pilot control box receives the start-stop signals of the emulsion pump or spray pump generated by the main control board; The pilot control box sends a device state detection signal to the comprehensive switch box; The comprehensive switch box performs self-diagnosis based on the device state detection signal, generates a device state detection result and returns to the pilot control box; The pilot control box judges whether to allow to execute the switch control operation corresponding to the start-stop signal according to the safety state of the device state detection result.

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