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CN-121977668-A - Alarm method and alarm device for high and low water level of coal mine sump

CN121977668ACN 121977668 ACN121977668 ACN 121977668ACN-121977668-A

Abstract

The application relates to the technical field of underground water sump water level alarm, and discloses a coal mine water sump high-low water level alarm method which is characterized by comprising the steps of setting alarm preset values of water sumps, including a high water level upper limit threshold value Hmax and a low water level lower limit threshold value Hmin, setting different alarm preset values in each water sump, collecting liquid level data of each water sump in real time, processing the collected liquid level data by adopting a moving average filtering method, calculating to obtain the liquid level value of each water sump, comparing the liquid level value of each water sump with the respective alarm preset value, judging whether the water level is abnormal or not, and sending an alarm when the water level is judged to be abnormal so as to prompt operators to pay attention to the water level abnormality. On the other hand, the utility model discloses a colliery sump height water level alarm device, which comprises a plurality of liquid level sensors, a judging module, a touch screen, an alarm assembly and a power module. The application has the advantages of reducing cost and improving safety.

Inventors

  • YAN WEIMIN
  • ZHAO ZHIZHI
  • MENG TAO
  • LI LANGPING
  • LIU XUEHENG

Assignees

  • 国家能源集团宁夏煤业有限责任公司

Dates

Publication Date
20260505
Application Date
20251229

Claims (10)

  1. 1. The coal mine water sump high-low water level alarming method is characterized by comprising the following steps of: Setting alarm preset values of all water bins, wherein the alarm preset values comprise a high water level upper limit threshold value Hmax and a low water level lower limit threshold value Hmin, and each water bin is provided with different alarm preset values; liquid level data of each water bin are collected in real time; processing the collected liquid level data by adopting a moving average filtering method, and calculating to obtain liquid level values of all water bins; Comparing the liquid level value of each water bin with the alarm preset value to judge whether the water level is abnormal; when the water level abnormality is determined, an alarm is given to prompt an operator to pay attention to the water level abnormality.
  2. 2. The method for alarming the high water level and the low water level of the water sump of the coal mine according to claim 1, wherein the method for calculating the liquid level value is characterized in that the liquid level value currently collected by the ith water sump is set as The size of the filtering window is m, and the filtered liquid level value The calculation formula is as follows: Where n is the number of acquisitions per unit time.
  3. 3. The coal mine sump high and low water level alarming method according to claim 2, wherein when judging whether the water level is abnormal, judging whether Hmin is less than or equal to Hmax, if not more than Hmax or And (3) judging that the liquid level of the water sump is abnormal, triggering an alarm signal, and recording abnormal time and abnormal liquid level value.
  4. 4. The coal mine sump height water level alarm method according to claim 3, wherein if the liquid level data of each sump is not abnormal, the total sump liquid level is calculated ; If N water bins are provided, the total water bin liquid level calculation formula is as follows: Wherein the method comprises the steps of For measuring the effective bottom area of each water bin in advance and according to the calculated And adjusting the acquisition times n in unit time.
  5. 5. The method of any one of claims 1 to 4, further comprising a data recording step of storing the processed liquid level data in a database for subsequent query and analysis, and transmitting the data to a monitoring center or other related systems via a network for remote monitoring.
  6. 6. A coal mine sump height water level alarm device, characterized in that the method is applied to the coal mine sump height water level alarm method as claimed in any one of the preceding claims 1 to 5, and comprises the following steps: The liquid level sensors (1) are used for measuring the water level of the water sump and converting the water level into current signals; The judging module is connected with the liquid level sensors (1) and is used for calculating a liquid level value, judging whether the liquid level value is abnormal or not and outputting liquid level data; the touch screen (4) is connected with the judging module and is used for setting an alarm preset value and reading liquid level data output by the judging module; The alarm component is connected with the judging module; And the power supply module (6) is used for providing voltages for the liquid level sensor (1), the judging module and the touch screen (4).
  7. 7. The coal mine sump height water level alarm device according to claim 6, wherein the judging module is a PLC module (3) with an analog quantity acquisition module (2), the analog quantity acquisition module (2) is connected with the liquid level sensor (1), and the PLC module (3) is connected with the touch screen (4) and the alarm assembly.
  8. 8. The coal mine sump height water level alarm device according to claim 7, comprising an explosion-proof box (7), wherein the explosion-proof box (7) is provided with an openable front door, the touch screen (4) is arranged on the outer surface of the front door, and the analog quantity acquisition module (2), the PLC module (3) and the power supply module (6) are all arranged in the explosion-proof box (7).
  9. 9. The coal mine sump height water level alarm device according to claim 8, wherein a shielding signal wire (8) is connected to the explosion-proof box (7), an intrinsic safety junction box (9) is connected to the other end of the shielding signal wire (8), and the intrinsic safety junction box (9) is connected with the liquid level sensor (1).
  10. 10. A coal mine sump high and low water level alarm device according to any one of claims 6 to 9 wherein the alarm assembly comprises an explosion proof acoustic-optic bell (5).

Description

Alarm method and alarm device for high and low water level of coal mine sump Technical Field The invention relates to the technical field of underground water sump water level alarm, in particular to a coal mine water sump high and low water level alarm method and an alarm device. Background In the standardization of coal mine safety production, a water pump room is required to be provided with a water level observation and high and low water level audible and visual alarm device. At present, a water level sensor is normally adopted for measuring the water level of a mine water sump, and the water level sensor has single function and can only display the water level and has no high water level and low water level alarm function. The mining input type liquid level sensor with the model of GUY10 (A) is based on a singlechip, signals output by a probe are amplified and converted into digital signals through A/D conversion, the digital signals enter the singlechip, are processed and are digitally displayed through a nixie tube, and frequency signals are output through a signal output circuit. The alarm can not be given according to the real-time water level condition, and one device can only monitor one water sump, when monitoring a plurality of water sumps, wiring is required to be added, a plurality of devices are required to be arranged, and equipment investment is increased. Therefore, the coal mine sump height water level alarm device is required to be arranged, a plurality of sumps can be monitored simultaneously, and in addition, the alarm can be given to on-site personnel in time, so that the safety is improved. Disclosure of Invention The application aims to solve the problems of high cost and inconvenience in alarming in the prior art and provides a coal mine sump high-low water level alarming method and an alarming device. In order to achieve the purpose, the invention provides a coal mine water sump high-low water level alarming method, which comprises the following steps: Setting alarm preset values of all water bins, wherein the alarm preset values comprise a high water level upper limit threshold value Hmax and a low water level lower limit threshold value Hmin, and each water bin is provided with different alarm preset values; liquid level data of each water bin are collected in real time; processing the collected liquid level data by adopting a moving average filtering method, and calculating to obtain liquid level values of all water bins; Comparing the liquid level value of each water bin with the alarm preset value to judge whether the water level is abnormal; when the water level abnormality is determined, an alarm is given to prompt an operator to pay attention to the water level abnormality. In some embodiments, the liquid level value is calculated by setting the liquid level value currently acquired by the ith water sump asThe size of the filtering window is m, and the filtered liquid level valueThe calculation formula is as follows: Where n is the number of acquisitions per unit time. In some embodiments, when judging whether the water level is abnormal, judging whether Hmin is satisfiedHmax, if not more thanHmax orAnd (3) judging that the liquid level of the water sump is abnormal, triggering an alarm signal, and recording abnormal time and abnormal liquid level value. In some embodiments, if there is no abnormality in the liquid level data of each sump, the total sump liquid level is calculated; If N water bins are provided, the total water bin liquid level calculation formula is as follows: Wherein the method comprises the steps of For measuring the effective bottom area of each water bin in advance and according to the calculatedAnd adjusting the acquisition times n in unit time. In some embodiments, the method further comprises a data recording step, wherein the processed liquid level data is stored in a database for subsequent inquiry and analysis, and the data is transmitted to a monitoring center or other related systems through a network to realize remote monitoring. On the other hand, the application discloses a coal mine sump high-low water level alarm device, which is applied to the coal mine sump high-low water level alarm method, and comprises the following steps: The liquid level sensors are used for measuring the water level of the water sump and converting the water level into current signals; the judging module is connected with the liquid level sensors and is used for calculating a liquid level value, judging whether the liquid level value is abnormal or not and outputting liquid level data; The touch screen is connected with the judging module and is used for setting an alarm preset value and reading liquid level data output by the judging module; the alarm component is connected with the judging module; and the power supply module is used for providing voltage for the liquid level sensor, the judging module and the touch screen. In some embodiments, the determinatio