An underground fan station operating condition detection method and monitoring device

Abstract

The present invention discloses a method for detecting the working conditions of an underground fan station and a monitoring device, which relates to the technical field of underground ventilation in underground mines. The present invention solves the problem that it is impossible to effectively and real-time grasp the air volume distribution situation underground, thus making it inconvenient to adjust the underground air volume. The working condition state information of the fan station located within the underground monitoring range is collected in real time through the underground fan station working condition monitoring device, and the monitored working condition state information is transmitted to the monitoring system. Through the monitoring system, it is convenient for the staff to detect the operation working conditions of the underground fan station in real time, dynamically grasp the air supply situation of the underground fan station, facilitate understanding the underground air volume distribution situation. If the air volume distribution is abnormal, a warning message is sent through the alarm module to remind the staff to adjust the air volume distribution, and a fan control command is issued through the control module, and the working condition of the fan station is adjusted in a timely manner according to the fan control command.

Description

Technical Field

[0001] The present invention relates to the technical field of underground mine ventilation, and particularly to a method for detecting the working conditions of an underground fan station and a monitoring device. Background Art

[0002] With the continuous development of mine exploitation, the underground ventilation system has become more and more complex, and multi-stage underground ventilation has become quite common. The underground fan station is a device specifically used for underground ventilation. The fan station can supply sufficient fresh air to underground personnel to meet the needs of personnel breathing, dilute and remove harmful gases and dust in the mine, so that the underground gas meets the relevant regulations. At the same time, it can adjust the underground climate conditions and create a good production and working environment for underground workers. The publication number is, but in the prior art, there has always been a lack of effective means for detecting and monitoring the working conditions of underground fan stations. Only detecting and monitoring the main surface air conditions is difficult to meet the evaluation and analysis of the ventilation system, and it is impossible to detect and monitor the working conditions of underground fan stations. Therefore, it is impossible to effectively and real-time master the underground air volume distribution, and further impossible to know whether there is an abnormality in the underground air volume, which is inconvenient to adjust the underground air volume, and thus it is impossible to achieve on-demand air volume distribution. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for detecting the working conditions of an underground fan station and a monitoring device, which can quickly detect the working conditions of the underground fan station, and at the same time realize real-time monitoring, master the operation dynamics of the underground fan station, so as to analyze the ventilation system, and adjust it in a timely manner according to the working conditions of the fan station to achieve on-demand ventilation, so as to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A method for detecting the working conditions of an underground fan station includes the following steps:

[0006] S1: Collect the working condition state information of the fan station within the monitoring range underground;

[0007] S2: Determine the working condition negative pressure range, detect the working condition air volume and static pressure difference of the fan operation, and determine the wind speed in the roadway according to the static pressure difference;

[0008] S3: Determine the true working condition state of the fan station within the underground monitoring range, determine whether the fan working condition of the currently monitored fan station is abnormal, and determine the on-off situation of the currently monitored fan;

[0009] S4: Transmit the monitored static pressure difference, wind speed, and air volume data to the monitoring system, and the monitoring system monitors the working condition state information of the fan station in real time.

[0010] Further, the working condition state information in S1 includes static pressure difference, wind speed, and air volume data.

[0011] Further, the working condition negative pressure range in S2 is determined according to the performance of the underground fan station, and the working condition negative pressure range is 400 Pa to 1600 Pa. Pitot tubes are installed at both ends of the fan station, and the static pressure difference of the fan operation condition is detected according to the working condition negative pressure range to detect the fan operation condition.

[0012] Further, before determining the wind speed in the roadway in S2, it also includes using the mechanical anemometer full-section method to detect the air volume of the fan operation condition, and simultaneously recording the static pressure difference of the fan operation at the same moment. According to the measured working conditions, the resistance of the fan station and the roadway section are determined, and the relationship function between the working condition static pressure difference and the working condition air volume is determined, expressed as

[0013]

[0014] Q = Av

[0015] where P is the static pressure difference, h is the resistance of the fan in the fan station, Q is the flow rate of a certain section, v is the wind speed passing through this section, and A is the area of the air passage section.

[0016] A monitoring device for the working condition detection method of an underground fan station includes a monitoring unit, a calculation unit, and a determination unit. Among them,

[0017] The monitoring unit is used to collect the working condition state information of the fan station underground within the monitoring range, determine the working condition negative pressure range according to the negative pressure detector, and obtain the working condition state information of the static pressure difference, wind speed, and air volume data after the fan operation.

[0018] The calculation unit is used to detect the air volume of the fan operation condition by using the mechanical anemometer full-section method, determine the resistance of the fan station and the roadway section according to the measured working conditions, and determine the relationship function between the working condition static pressure difference and the working condition air volume.

[0019] The determination unit is used to determine the true working condition state of the fan station within the underground monitoring range according to the working condition state information obtained by the monitoring unit, determine whether the fan working condition of the currently monitored fan station is abnormal, and can simultaneously determine the on / off situation of the currently monitored fan.

[0020] The underground fan station working condition monitoring device transmits the working condition state information of the static pressure difference, wind speed, and air volume data obtained by monitoring to the monitoring system.

[0021] Further, the determination unit includes a data processing module, among which,

[0022] The data processing module realizes the real-time analysis and processing operation of the working condition state information, forms visual information such as curves, graphs, and charts of various working condition state information changes and outputs them, compares the historical monitoring data, evaluates the working condition state of the fan in the current fan station, generates a working condition report that conforms to the actual situation and publishes it.

[0023] Further, the monitoring system includes a receiving module, an alarm module, and a control module, where

[0024] The receiving module is configured to receive the working condition status information monitored by the working condition monitoring device of the underground fan station;

[0025] The alarm module is used to issue a warning message. The alarm module sets an abnormal alarm threshold for the fan in the fan station to remind the staff that the fan in the fan station is operating abnormally;

[0026] The control module is configured to view the abnormal operating conditions of the fan in the fan station according to the warning message by receiving the fan control command of the monitoring system and issue a fan control command, and adjust the working condition of the fan station in a timely manner according to the fan control command.

[0027] Further, the monitoring system is connected to the ground dispatching room. The ground dispatching room is used to view the working condition status information received by the monitoring system, and based on the received working condition status information, monitor the operating conditions of the fan station in real time. At the same time, the monitoring system has a fault alarm operation for abnormal working conditions.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. For a method and a monitoring device for the working conditions of an underground fan station of the present invention, the working condition status information of the fan station within the underground monitoring range is collected in real time by the working condition monitoring device of the underground fan station. The working condition negative pressure range is determined by a negative pressure detector and according to the performance of the fan in the underground fan station. After the fan operates, the electric energy is converted into air kinetic energy to form a static pressure difference at both ends of the fan. The full-section wind speed after the fan operates is obtained by the manual wind detection method. The air volume of the roadway under different working condition negative pressures is calculated according to the roadway section. The relationship between the air volumes under different negative pressure states after the fan operates is measured, and the operating resistance of the fan is indirectly determined. The relationship function of air volume, resistance, and negative pressure is obtained. By monitoring the static pressure difference at both ends of the fan station and the determined relationship function of air volume, resistance, and negative pressure, the air volume and air pressure of the operating conditions of the fan station are monitored in real time. The multifunctional monitoring of the fan station is realized through the working condition monitoring device of the underground fan station, the operating conditions of the underground fan station can be detected in real time, the air supply situation of the underground fan station can be dynamically mastered, the air volume distribution situation in the underground can be conveniently understood, and the stable and safe operation of the ventilation system can be ensured.

[0030] 2. A method and monitoring device for detecting the working conditions of an underground fan station according to the present invention. The monitoring system receives the working condition information monitored by the underground fan station working condition monitoring device through the receiving module. If the air volume distribution is abnormal, a warning message is sent through the alarm module to remind the staff that the fan in the fan station is operating abnormally, and the air volume distribution is adjusted in real time. The fan control command is issued through the control module, and the working condition of the fan station is adjusted in a timely manner according to the fan control command. The monitoring system can detect the working condition of the underground fan station in real time, monitor the start and stop of the fan station at the same time, dynamically master the air supply situation of the underground fan station, facilitate understanding the underground air volume distribution situation, and make timely adjustments to the air volume distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall process of the present invention;

[0032] Figure 2 It is a schematic diagram of the underground fan station working condition monitoring device and monitoring system of the present invention;

[0033] Figure 3 It is a schematic diagram of the detection principle of the underground fan station of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] In order to solve the technical problem that there has always been a lack of effective means for detecting and monitoring the working conditions of underground fan stations in the prior art, and only detecting and monitoring the main surface air conditions is difficult to meet the evaluation and analysis of the ventilation system, and it is impossible to detect and monitor the working conditions of underground fan stations, so it is impossible to effectively and real-time master the underground air volume distribution situation, and further impossible to know whether there is an abnormality in the underground air volume, which is inconvenient to adjust the underground air volume, and thus impossible to achieve on-demand air volume distribution. Please refer to Figures 1 - 3 , the following technical solutions are provided in this embodiment:

[0036] A method for detecting the working conditions of an underground fan station includes the following steps:

[0037] S1: Collect the working condition information of the fan station in the underground within the monitoring range;

[0038] S2: Determine the working condition negative pressure range, detect the working condition air volume and static pressure difference of the fan operation, and determine the wind speed that the roadway can withstand according to the static pressure difference;

[0039] S3: Determine the true operating condition status of the fan station within the downhole monitoring range, determine whether the fan operating condition of the currently monitored fan station is abnormal, and determine the start / stop status of the currently monitored fan.

[0040] S4: Transmit the monitored static pressure difference, wind speed, and air volume data to the monitoring system, and the monitoring system monitors the operating condition status information of the fan station in real time.

[0041] The operating condition status information in S1 includes static pressure difference, wind speed, and air volume data.

[0042] The operating condition negative pressure range in S2 is determined according to the fan performance of the downhole fan station. The operating condition negative pressure range is 400 Pa to 1600 Pa. Pitot tubes are installed at both ends of the fan station, and the static pressure difference of the fan operation condition is detected according to the operating condition negative pressure range.

[0043] Before determining the wind speed in the roadway in S2, it also includes using the mechanical anemometer full-section method to detect the air volume of the fan operation condition, and simultaneously recording the static pressure difference of the fan operation at the same moment. Determine the fan station resistance and roadway section according to the measured operating conditions, and determine the relationship function between the operating condition static pressure difference and the operating condition air volume, expressed as

[0044]

[0045] Q = Av

[0046] where P is the static pressure difference, h is the fan resistance of the fan station, Q is the flow rate of a certain section, v is the wind speed passing through this section, and A is the cross-sectional area of the air passage.

[0047] Specifically, determine the working condition negative pressure range according to the performance of the underground fan station. Different types of fans have significant performance differences, and the working condition ranges of fans with different powers are also different. When selecting, it is necessary to choose a suitable negative pressure detector according to the fan in the underground fan station. Install pitot tubes at both ends of the fan station to detect the static pressure difference of the fan operation working condition. By installing pitot tubes, detect the negative pressure difference of the fan station. After the fan operates, the electrical energy is converted into air kinetic energy to form the static pressure difference at both ends of the fan. Master the fan operation efficiency through the static pressure difference at two positions of the fan in the past. Use the full-section method to detect the air volume of the fan operation working condition. Obtain the full-section wind speed after the fan operates through manual wind detection methods. Measure the comprehensive wind speed of the roadway more than 3 times under different working condition negative pressures and take the average value. Calculate the roadway air volume under different working condition negative pressures according to the roadway section. Determine the resistance of the fan station according to the measured working conditions. Determine the relationship function between the working condition static pressure difference and the working condition air volume. Indirectly determine the fan operation resistance through the relationship between the air volume under different negative pressure states after the fan operates. Obtain the relationship function of air volume, resistance, and negative pressure. Through monitoring the static pressure difference at both ends of the fan station and the determined relationship function of air volume, resistance, and negative pressure, monitor the air volume and air pressure of the fan station operation working condition in real time. The detected working condition state information can be synchronously transmitted to the monitoring system through the data line. Intuitively monitor the working condition state of the fan station in the ground dispatching room. It is possible to detect the operation working condition of the underground fan station in real time. At the same time, monitor the start and stop of the fan station, dynamically master the air supply situation of the underground fan station, facilitate understanding the underground air volume distribution situation, assist in analyzing the air regulation plan, optimize the ventilation system, and ensure the stable and safe operation of the ventilation system.

[0048] A monitoring device for a method of detecting the working conditions of an underground fan station, comprising a monitoring unit, a calculation unit, and a determination unit, wherein,

[0049] The monitoring unit is used to collect the working condition state information of the fan station in the underground within the monitoring range, determine the working condition negative pressure range according to the negative pressure detector, and thus obtain the working condition state information about the static pressure difference, wind speed, and air volume data after the fan operates;

[0050] The calculation unit is used to detect the air volume of the fan operation working condition by using the mechanical anemometer full-section method, determine the resistance of the fan station and the roadway section according to the measured working conditions, and determine the relationship function between the working condition static pressure difference and the working condition air volume;

[0051] The determination unit is used to determine the real working condition state of the fan station within the underground monitoring range according to the working condition state information obtained by the monitoring unit, determine whether the fan working condition of the currently monitored fan station is abnormal, and can also determine the start and stop conditions of the currently monitored fan at the same time.

[0052] The underground fan station working condition monitoring device transmits the working condition state information of the static pressure difference, wind speed, and air volume data obtained by monitoring to the monitoring system.

[0053] The determination unit includes a data processing module, wherein,

[0054] The data processing module realizes the real-time analysis and processing of the working condition status information, forms visual information such as curves, graphs, and charts of various changes in the working condition status information and outputs them, compares with the historical monitoring data, evaluates the working condition status of the fans in the current fan station, generates a working condition report that conforms to the actual situation and publishes it.

[0055] The monitoring system includes a receiving module, an alarm module, and a control module. Among them,

[0056] The receiving module is used to receive the working condition status information monitored by the working condition monitoring device of the underground fan station;

[0057] The alarm module is used to send out early warning information. The alarm module sets the abnormal alarm threshold of the fan in the fan station to remind the staff that the fan in the fan station is operating abnormally;

[0058] The control module is used to view the abnormal operating conditions of the fans in the fan station and issue fan control commands according to the early warning information by receiving the fan control commands of the monitoring system, and adjust the working condition of the fan station in a timely manner according to the fan control commands.

[0059] The monitoring system is connected to the ground dispatching room. Through the real-time monitoring of the working condition monitoring device of the underground fan station, it realizes the monitoring of the operating conditions of the fan station based on the received working condition status information, and at the same time has the function of fault alarm operation.

[0060] Specifically, the underground fan station working condition monitoring device is arranged at the fan station in the underground that needs to be monitored. The underground fan station working condition monitoring device collects the working condition information of the fan station in the monitored range underground through the monitoring unit, determines the working condition negative pressure range according to the negative pressure detector, and thus obtains the working condition information about the static pressure difference, wind speed and air volume data after the fan operates. The working condition negative pressure range is determined according to the performance of the fan in the underground fan station through the negative pressure detector. After the fan operates, the electric energy is converted into air kinetic energy to form the static pressure difference at both ends of the fan. The full-section wind speed after the fan operates is obtained by the manual wind detection method. The air volume of the roadway under different working condition negative pressures is calculated according to the roadway section. The wind resistance of the fan is indirectly determined by measuring the relationship between the air volumes under different negative pressure states after the fan operates. Then, according to the measured working conditions, the fan station resistance and the roadway section are determined by the calculation unit, and are substituted into the function of the relationship between the working condition static pressure difference and the working condition air volume. The wind speed of the roadway is determined through the detected static pressure difference. Finally, according to the obtained working condition information, the determination unit determines the true working condition of the fan station in the underground monitored range, determines whether the working condition of the fan in the currently monitored fan station is abnormal. The monitoring system receives the working condition information monitored by the underground fan station working condition monitoring device through the receiving module. The determination unit can realize the real-time analysis and processing operation of the working condition information through the data processing module, form visual information such as curves, graphs, charts, etc. of various changes in the working condition information and output them to the monitoring system for display, which is convenient for the ground dispatching room to view. By comparing the working condition information with the historical monitoring data, the working condition of the fan in the current fan station is evaluated, and it is determined whether there is an abnormality in the air volume distribution. If there is an abnormality in the air volume distribution, a warning message is sent through the alarm module. The alarm module reminds the staff that the fan in the fan station is operating abnormally. The work issues a fan control command through the control module to adjust the air volume distribution. The monitoring system can detect the operating conditions of the underground fan station in real time, and at the same time monitor the start and stop of the fan station, dynamically master the air supply situation of the underground fan station, facilitate understanding the air volume distribution situation in the underground, and timely adjust the air volume distribution.

[0061] In summary, for the underground fan station working condition detection method and monitoring device of the present invention, the underground fan station working condition monitoring device collects the working condition status information of the fan station within the underground monitoring range in real time through the monitoring unit, determines the working condition negative pressure range according to the fan performance of the underground fan station through the negative pressure detector, detects the static pressure difference at both ends of the fan formed by the conversion of electrical energy into air kinetic energy after the fan operates, obtains the full-section wind speed after the fan operates through the manual wind detection method, calculates the roadway air volume under different working condition negative pressures according to the roadway cross-section, then determines the roadway energy wind speed through the calculation unit, and finally determines the true working condition status of the fan station within the underground monitoring range through the determination unit according to the obtained working condition status information, determines whether the fan working condition of the currently monitored fan station is abnormal, and the monitoring device transmits the monitored working condition status information to the monitoring system, facilitating the ground dispatching room to detect the operation working condition of the underground fan station in real time, dynamically master the air supply situation of the underground fan station, conveniently understand the underground air volume distribution situation, ensure the stable and safe operation of the ventilation system, the monitoring system views the working condition status information monitored by the underground fan station working condition monitoring device through the receiving module. If the air volume distribution is abnormal, a warning message is sent through the alarm module to remind the staff that the fan of the fan station is operating abnormally, and a fan control command is issued through the control module. The working condition of the fan station is adjusted in a timely manner according to the fan control command. The monitoring system can detect the operation working condition of the underground fan station in real time, monitor the start and stop of the fan station at the same time, dynamically master the air supply situation of the underground fan station, conveniently understand the underground air volume distribution situation, and make timely adjustments to the air volume distribution.

[0062] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A method for detecting the operating conditions of an underground fan station, characterized in that, It includes the following steps: S1: Collect the working condition information of the fan station in the mine within the monitoring range; S2: Determine the working condition negative pressure range, detect the air volume and static pressure difference of the fan operation working condition, and determine the wind speed in the roadway according to the static pressure difference; S3: Determine the real working condition of the fan station within the underground monitoring range, determine whether the fan working condition of the currently monitored fan station is abnormal, and determine the start / stop situation of the currently monitored fan; S4: Transmit the monitored static pressure difference, wind speed, and air volume data to the monitoring system, and the monitoring system monitors the working condition information of the fan station in real time; The working condition information in S1 includes static pressure difference, wind speed, and air volume data; The working condition negative pressure range in S2 is determined according to the fan performance of the underground fan station. The working condition negative pressure range is 400 Pa to 1600 Pa. Pitot tubes are installed at both ends of the fan station, and the static pressure difference of the fan operation working condition is detected according to the working condition negative pressure range; Before determining the wind speed in the roadway in S2, it also includes detecting the air volume of the fan operation working condition by the mechanical anemometer full-section method, and simultaneously recording the static pressure difference of the fan operation at the same moment. Determine the fan station resistance and roadway section according to the measured working conditions, and determine the relationship function between the working condition static pressure difference and the working condition air volume, which is expressed as Among them, is the static pressure difference, is the fan resistance of the fan station, is the flow rate at a certain cross-section, is the wind speed passing through this cross-section, is the area of the air passage cross-section.

2. A monitoring device for the underground fan station working condition detection method as described in claim 1, characterized in that, It includes a monitoring unit, a calculation unit, and a determination unit. Among them, The monitoring unit is used to collect the working condition information of the fan station in the mine within the monitoring range, determine the working condition negative pressure range according to the negative pressure detector, and obtain the working condition information about the static pressure difference, wind speed, and air volume data after the fan operation; The calculation unit is used to detect the air volume of the fan operation working condition by the mechanical anemometer full-section method, determine the fan station resistance and roadway section according to the measured working conditions, and determine the relationship function between the working condition static pressure difference and the working condition air volume; The determination unit is used to determine the real working condition of the fan station within the underground monitoring range according to the working condition information obtained by the monitoring unit, determine whether the fan working condition of the currently monitored fan station is abnormal, and can also determine the start / stop situation of the currently monitored fan at the same time; The underground fan station working condition monitoring device transmits the working condition information of the monitored static pressure difference, wind speed, and air volume data to the monitoring system; The determination unit includes a data processing module. Among them, The data processing module realizes the real-time analysis and processing operation of the working condition information, forms the curve, graph, and chart visualization information of various working condition information changes and outputs them, compares the historical monitoring data, evaluates the working condition of the fan in the current fan station, generates a working condition report that conforms to the actual situation and publishes it; The monitoring system includes a receiving module, an alarm module, and a control module. Among them, The receiving module is used to receive the working condition information monitored by the underground fan station working condition monitoring device; The alarm module is used to send early warning information. The alarm module sets the abnormal alarm threshold of the fan in the fan station to remind the staff that the fan in the fan station is operating abnormally; The control module is used to view the abnormal situation of the fan operation in the fan station according to the early warning information and issue a fan control command by receiving the fan control command of the monitoring system, and adjust the working condition of the fan station in a timely manner according to the fan control command; The monitoring system is connected to the ground dispatching room, which is used to view the working condition status information received by the monitoring system, and based on the received working condition status information, monitor the operating conditions of the fan station in real time. At the same time, the monitoring system has a fault alarm operation for abnormal working conditions.

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