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CN-122014319-A - Mine high-precision automatic adjusting air window

CN122014319ACN 122014319 ACN122014319 ACN 122014319ACN-122014319-A

Abstract

The application discloses a mine high-precision automatic regulation wind window which comprises a back plate and an adjusting plate, wherein the back plate is provided with a wind window, the lower end part of the back plate is fixedly provided with a limiting sliding rail, the lower end part of the adjusting plate is provided with a limiting pulley, the back plate is provided with a driving assembly, the driving assembly comprises a lead screw and an electric motor, the back plate is provided with an electric cabinet, the electric cabinet comprises an MCU control module, a sensing module and a communication module, the MCU control module is used for calculating the accurate wind window regulation quantity through a wind window area calculation formula and converting digital signals into electric signals to be transmitted to the electric motor, the electric motor is used for executing regulation action, the sensing module is used for monitoring the difference value between two lateral pressures of the wind window and uploading the difference value to the MCU control module, and the communication module is used for receiving control instructions of the MCU control module and recording received data. According to the application, the MCU control module is used for accurately calculating the adjustment quantity, and the speed reduction ratio of the speed reduction electric motor and the pulse signal are combined to accurately control the action of the actuating mechanism, so that the accurate control of the air volume of the air window is realized, and the rapid and accurate adjustment and control of the air volume of the air window of the mine are further completed, so that the real-time air adjustment requirement of the underground ventilation system is met.

Inventors

  • LI ZHENNAN
  • CHU ZHAOWEI
  • LI MINGZHOU
  • Zheng Lianghao
  • ZHAO KUN
  • XU WEI

Assignees

  • 江苏吉安矿业科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260312

Claims (6)

  1. 1. The mine high-precision automatic regulation wind window comprises a back plate (1) and a regulating plate (6) and is characterized in that the back plate (1) is provided with a wind window for ventilation, a limit sliding rail (10) is fixedly arranged at the lower end part of the back plate (1) along the length direction, a limit pulley (9) matched with the limit sliding rail (10) is arranged at the lower end part of the regulating plate (6), the back plate (1) is provided with a driving assembly for realizing horizontal movement of the regulating plate (6), and the driving assembly comprises a lead screw (14) and an electric motor (17); the backboard (1) is provided with an electric control box (22), the electric control box (22) comprises an MCU control module (23), a sensing module (24) and a communication module (25), The MCU control module (23) is respectively and electrically connected with the sensing module (24), the communication module (25) and the electric motor (17), the MCU control module (23) is used for calculating the accurate wind window adjustment quantity through a wind window area calculation formula, converting digital signals into electric signals and transmitting the electric signals to the electric motor (17), and the electric motor (17) executes adjustment actions; The sensing module (24) comprises pressure difference sensors arranged on two sides of the wind window, and the pressure difference sensors are used for monitoring the difference value of the two sides of the wind window and uploading the difference value to the MCU control module (23); the communication module (25) is used for receiving the control instruction of the MCU control module (23) and recording the received data.
  2. 2. The mine high-precision automatic adjustment window according to claim 1, wherein the MCU control module (23) is characterized in that when the window adjustment quantity is calculated, the electric motor (17) adopts a speed reduction electric motor with a rotary encoder, the speed reduction ratio of the speed reduction electric motor is n:1, x pulses are generated by the rotary encoder every 1 turn, the speed reduction electric motor output shaft every 1 turn, the rotary encoder generates nx pulses, meanwhile, the screw pitch is y and m, the lead of the screw (14) is y and m every 1 turn of the speed reduction electric motor output shaft, the lead of the screw (14) represented by each 1 pulse is y/nx and m, the window opening height is H and m, the area to be adjusted is S and m 2 , the distance to be moved by the adjusting plate is S/H and m, the accurate adjustment of the window opening area is realized by controlling the number of pulses generated by the operation of the speed reduction electric motor (17), and the number of pulses generated by the operation of the speed reduction electric motor (17) is: ; the area S of the window to be adjusted is determined by: The method comprises the steps of adopting a numerical simulation method, under the condition that the pressure difference at two sides of a wind window is unchanged, simulating to obtain the air quantity Q, m 3 /s under different wind window opening areas Sc, obtaining the equivalent wind resistance value R, N.s 2 /m 8 of different wind window opening areas Sc according to a ventilation resistance law, wherein a calculation formula of the ventilation resistance law is as follows: ; in the formula (II), h is the pressure difference of two sides of the wind window, pa, directly measured by a pressure difference sensor, and the relation between the opening area Sc of the wind window and the equivalent wind resistance value R is obtained through data fitting: ; From the formulas (two) and (three), a calculation formula of the opening area Sc of the wind window is obtained: ; one condition of underground coal mine air window regulation is that the air volume of an air window installation place meets the air volume requirement, namely when the pressure difference at two sides of the air window changes, the air volume of the air window is kept unchanged by regulating the opening area Sc of the air window, namely: ; H 1 in the formula (five) is the pressure difference before the change of the two sides of the wind window, sc 1 is the current opening area of the wind window, h 2 in the formula (six) is the current pressure difference of the two sides of the wind window, sc 2 is the opening area after the wind window is adjusted, and the area of the wind window to be adjusted is In the adjusting process of the wind window, firstly, definite required wind volume, a supply-demand ratio and an adjusting multiplying power are required to be set for the installed wind window, the adjusting multiplying power is in a supply-demand ratio range, the pressure difference at two sides of the current wind window used for calculating the area S required to be adjusted of the wind window can change along with the wind window adjusting action, therefore, after the wind window finishes the adjusting action, the system is required to calculate and correct the current wind volume of the wind window according to a deformation formula of a formula (IV), and the deformation formula of the formula (IV) is as follows: ; If the air volume is within the supply-demand ratio range, the adjustment is completed, and if the air volume is not within the supply-demand ratio range, the calculation process of the area S of the air window to be adjusted is repeated until the air volume is within the supply-demand ratio range.
  3. 3. The mine high-precision automatic adjusting air window according to claim 2, wherein the other condition of the underground coal mine air window adjustment is that when the required air volume of an air window installation place changes under the condition that the pressure difference h and the air volume of the two sides of the air window are unchanged, the air volume of the air window needs to be increased or reduced, and the air volume of the air window is controlled by adjusting the opening area Sc of the air window, namely: ; q 1 、Q 2 in the formulas (eight) and (nine) is the change of the air volume required by the air window, sc 3 、Sc 4 is the change of the area of the air window, and the area of the air window is required to be regulated In the same way, in the window adjusting process, the pressure difference h at two sides is always changed, so that the air quantity calculation correction is carried out by adopting a formula (seventh) after the adjustment is finished, if the air quantity is within the supply-demand ratio range, the adjustment is finished, and if the air quantity is not within the supply-demand ratio range, the calculation process of the area S of the window to be adjusted is repeated until the air quantity is within the supply-demand ratio range.
  4. 4. The mine high-precision automatic adjusting air window according to claim 1, wherein the lower end of the adjusting plate (6) is in threaded connection with a screw rod (14), a fixed block (12) and a supporting block (15) are fixedly arranged at the lower end of the back plate (1), one end of the screw rod (14) is rotationally connected with the fixed block (12), the other end of the screw rod (14) penetrates through the supporting block (15) and is rotationally connected with the supporting block (15), and one end of the screw rod (14) deviating from the fixed block (12) is connected with an electric motor (17).
  5. 5. The mine high-precision automatic adjustment wind window is characterized in that the back plate (1) is connected with a cross beam (2), a hanger rail track (20) is fixedly arranged in the cross beam (2), a hanger rail pulley (21) matched with the hanger rail track (20) is arranged in the hanger rail track (20), and the hanger rail pulley (21) is connected with the adjustment plate (6) through bolts.
  6. 6. The mine high-precision automatic adjustment air window according to claim 1, wherein the MCU control module (23) further comprises a display module (26), and the display module (26) is used for converting various digital signals processed by the MCU control module (23) into images for display.

Description

Mine high-precision automatic adjusting air window Technical Field The invention relates to the field of coal mine ventilation, in particular to a high-precision automatic adjustment wind window for a mine. Background Ventilation of coal mines is the primary task of safe work of coal mines, and the ventilation system has the effects of supplying fresh air underground, diluting gas, exhausting harmful gas and the like. The underground wind flow is always in continuous change because the wind passing rate of the wind using place changes due to the mining work, tunnel deformation, sundries accumulation, season alternation and the like. And the air quantity required by the air consumption place changes due to factors such as abnormal gas gushing and dust, so that the air quantity required by the air consumption place is dynamically regulated to a proper range according to the real-time air quantity required, the air quantity is too large to cause adverse effects such as increased air leakage quantity and resource waste, and harmful gases such as gas are not easy to be discharged if the air quantity is too small. The ventilation system consists of ventilation network, equipment and control facilities, and includes wind door, wind bridge, wind window and other structures in mechanical or natural ventilation mode. The mine wind window is arranged on a wall or a door in a roadway, an adjustable space window is reserved on the wall or the door, and the purpose of adjusting the air quantity is achieved by adjusting the area of the space window. However, the existing mine wind window adjustment is mostly realized by manual flashboard adjustment or pneumatic shutter adjustment, manual flashboard adjustment is required to be operated, the adjustment precision is low, the adjustment is lagged, the pneumatic shutter adjustment has the defects of difficult measurement of the air quantity, low adjustment precision and large local resistance, and the accurate adjustment of the air quantity of the mine wind window cannot be realized by the above-mentioned modes, so that the real-time adjustment and control of an underground ventilation system cannot be satisfied. Disclosure of Invention In order to realize rapid and accurate regulation and control of the air quantity of a mine air window so as to meet the real-time air regulation requirement of an underground ventilation system, the application provides a high-precision automatic regulation air window for a mine. The application provides a high-precision automatic adjustment wind window for a mine, which adopts the following technical scheme: The high-precision automatic regulation wind window for the mine comprises a back plate and an adjusting plate, wherein the back plate is provided with a wind window for ventilation, the lower end part of the back plate is fixedly provided with a limit sliding rail along the length direction, and the lower end part of the adjusting plate is provided with a limit pulley matched with the limit sliding rail; The backboard is provided with an electric control box which comprises an MCU control module, a sensing module and a communication module, The MCU control module is respectively and electrically connected with the sensing module, the communication module and the electric motor, and is used for calculating the accurate wind window adjustment quantity through a wind window area calculation formula, converting the digital signal into an electric signal and transmitting the electric signal to the electric motor, and executing the adjustment action by the electric motor; The sensing module comprises pressure difference sensors arranged on two sides of the wind window, and the pressure difference sensors are used for monitoring the difference value of the two sides of the wind window and uploading the difference value to the MCU control module; the communication module is used for receiving the control instruction of the MCU control module and recording the received data. Optionally, when the MCU control module calculates the adjustment quantity of the wind window, the electric motor adopts a decelerating electric motor with a rotary encoder, the reduction ratio of the decelerating electric motor is n:1, x pulses are generated by the decelerating electric motor every 1 circle of rotation of the rotary encoder, n x pulses are generated by the output shaft of the decelerating electric motor every 1 circle of rotation of the rotary encoder, meanwhile, the screw pitch of the screw is y and m, the lead of the screw is y and m every 1 circle of rotation of the output shaft of the decelerating electric motor, the lead of the screw represented by each 1 pulse is y/nx and m, the opening height of the wind window is H and m, the area to be adjusted of the wind window is S and m 2, the distance to be moved by the adjusting plate is S/H and m, the accurate adjustment of the opening area of the wind window is realized by controlling the number of pulses g