Airflow adjustment device and method for mine roadway

Abstract

Provided in the present application are an airflow adjustment device and method for a mine roadway. The device comprises: an airbag module, an inflation module, a fixing module, a main control module and a sensor module, wherein the airbag module is formed by means of joining a plurality of airbags; the inflation module is used for inflating and deflating the airbags; the fixing module comprises a first column, a second column, an upper guide rail, a lower guide rail and guide wheels; the left and right sides of the airbag module are respectively fixed to the first column and the second column to form an air door; the upper and lower sides of the airbag module are respectively fixed to the upper guide rail and the lower guide rail; the upper and lower ends of the first column are fixed to the left sides of the guide rails; and the guide wheels are mounted at both the upper and lower ends of the second column, such that the second column can be driven to move left and right along the guide rails, thereby driving the air door to open or close, and thus realizing ventilation or sealing of a roadway. The device in the present application can perform ventilation regulation and effective sealing on a mine roadway.

Description

A device and method for regulating air volume in mine roadways Technical Field

[0001] This application belongs to the field of mine ventilation technology, specifically relating to an air volume regulating device and method for mine roadways. Background Technology

[0002] In some mines, ventilation tunnels are often sealed using materials such as slabs, bricks, and concrete. However, during exploration or goaf detection operations, these sealed areas need to be reopened, increasing production costs and wasting time, labor, and manpower. Furthermore, during the operation of the mine ventilation system, the air volume required in different areas varies with underground production activities. To ensure efficient airflow to the working area, ventilation structures such as air doors and windows are needed to regulate air volume and direction. However, traditional air doors or windows have limited air volume regulation capabilities and cannot achieve on-demand ventilation in their controlled areas.

[0003] Therefore, it is necessary to design new technical solutions to address the above problems. Summary of the Invention

[0004] The purpose of this application is to provide an air volume regulating device and method for mine roadways, which can regulate ventilation in mine roadways and effectively seal off the roadways.

[0005] The technical solution provided in this application is as follows:

[0006] In a first aspect, this application provides an air volume regulating device for mine roadways, comprising: an airbag module, an inflation module, and a fixing module;

[0007] The airbag module is composed of multiple airbags spliced ​​together;

[0008] The inflation module includes an air pump for inflating the airbag, an air supply valve and a deflation valve for controlling the inflation and deflation of the airbag, respectively.

[0009] The fixing module includes a first column, a second column, an upper guide rail, a lower guide rail, and guide wheels. The first column, the upper guide rail, and the lower guide rail are respectively installed on the left side, top, and bottom of the mine roadway. The left and right sides of the airbag module are fixed to the first and second columns respectively, forming an air door. The upper and lower sides of the airbag module are fixed to the upper and lower guide rails respectively. The upper and lower ends of the first column are fixed to the left sides of the upper and lower guide rails respectively. Guide wheels are installed at both the upper and lower ends of the second column, and the guide wheels are paired with the guide rails. The guide wheels are used to drive the second column to move left and right along the guide rails, thereby driving the air door to open or close, realizing roadway ventilation and closure.

[0010] In one possible implementation, the upper and lower guide rails are provided with grooves on their left sides, and the upper and lower ends of the first column are respectively inserted into the grooves on the left sides of the upper and lower guide rails to achieve fixed and detachable installation.

[0011] In one possible implementation, the first column comprises two support sections, which can be assembled together by bolts to form the first column.

[0012] In one possible implementation, a central control module and a sensor module are also included; the fixing module, inflation module, sensor module and central control module are communicatively connected, the central control module is used to receive data collected by the sensor module, control the inflation module to inflate and deflate the airbag model, and control the movement of the guide wheels of the fixing module.

[0013] In one possible implementation, the main control module includes a main control unit and a wireless communication module. The main control unit is wirelessly connected to the fixing module, the inflation module, the sensor module, and the main control module via the wireless communication module.

[0014] In one possible implementation, the sensor module includes a wind speed sensor mounted on a second column for measuring wind speed in the tunnel, and the wind speed sensor transmits the collected data to the main control unit via a wireless transmission module.

[0015] In one possible implementation, the sensor module includes a first differential pressure sensor mounted on a second column for measuring the pressure difference across the damper. The first differential pressure sensor transmits the collected data to the main control unit via a wireless transmission module.

[0016] In one possible implementation, the sensor module further includes a second differential pressure sensor for measuring the total differential pressure in the roadway. The second differential pressure sensor transmits the collected data to the main control unit via a wireless transmission module.

[0017] In one possible implementation, the sensor module includes a pressure sensor mounted on the airbag or an air supply pipe communicating with the airbag, for detecting the air pressure inside the airbag module. The pressure sensor transmits the collected data to the main control unit via a wireless transmission module.

[0018] In one possible implementation, the sensor module further includes distance sensors installed at the ends of the second column and the guide rail, respectively, for detecting the distance between the second column and the end of the guide rail. The distance sensors transmit the collected data to the main control unit via a wireless transmission module.

[0019] In one possible implementation, the central control module further includes an input / output module; the input / output module includes a display connected to the central control unit for displaying status parameters collected by the sensor module.

[0020] In one possible implementation, the input / output module further includes a first switch (such as a push-button switch), which is connected to the main control unit and is used to input a control signal for switching the state of the damper.

[0021] Secondly, this application provides a method for regulating air volume in mine roadways. Using the above-mentioned device, the guide wheel drives the second column to move left and right along the guide rail, thereby opening or closing the air door to realize roadway ventilation and closure, and realize the regulation of air volume in the mine roadway.

[0022] In one possible implementation, when ventilation adjustment is required, a target wind speed is selected; the main control unit calculates the corresponding target opening based on the target wind speed, and determines the required air pressure of the airbag module as the target air pressure based on the target opening, where the target opening corresponds to the target position of the second column on the guide rail; the air pressure sensor collects the current air pressure of the airbag module and transmits it to the main control unit to control the air pump to start and inflate the airbag module through the air supply valve or deflate it through the air release valve until the air pressure reaches the target air pressure, while simultaneously controlling the guide wheel to move the second column to the target position; the wind speed sensor collects the real-time wind speed of the roadway after adjustment; and calculates the real-time wind speed V of the roadway after adjustment. 实时 and the preset target wind speed V 目标 If the percentage of error exceeds the set threshold, the opening of the damper will be fine-tuned until the target wind speed is reached.

[0023] In one possible implementation, when the device needs to adjust ventilation, the desired target opening degree is selected, where the target opening degree corresponds to the target position of the second column on the guide rail. The main control unit determines the required air pressure of the airbag module as the target air pressure based on the target opening degree. The air pressure sensor collects the air pressure of the airbag module in the current state and transmits it to the main control unit to control the air pump to start and inflate the airbag module through the air supply valve or deflate it through the air release valve until the air pressure of the airbag module reaches the target air pressure. At the same time, the guide wheel is controlled to drive the second column to move to the target position.

[0024] The above-mentioned technical solution of this application has the following beneficial effects:

[0025] This application provides an airflow regulating device and method for mine roadways, which can meet the needs of temporary sealing and airflow regulation in mine roadways, and is easy to install and can be quickly disassembled. It has the following advantages:

[0026] 1. It achieves "gate"-style closure of the tunnel cross section, which is simple to construct, does not have a significant impact on the original structure, and is safer.

[0027] 2. The airbags used in the damper are fireproof, high-strength, corrosion-resistant, and have flexible and controllable size. The entire device is flexible and can adjust ventilation or closure through the airbags.

[0028] 3. Further automation and visualization: Adding displays, remote switches, sensors and other equipment enables convenient operation of inflation, deflation and ventilation adjustment. It can automatically switch between closed and open modes and switch between ventilation and non-ventilation modes to achieve functional conversion.

[0029] 4. The modular design divides the device into several major components, which facilitates the assembly and disassembly of the device and clarifies the functional composition.

[0030] 5. Simple functions: Operators only need to input a few key parameters before use, and can remotely control the closure and ventilation of the tunnel. It does not require complicated training and is relatively easy to maintain.

[0031] 6. Use sensors and control components that support wireless communication to reduce the impact of cables on the tunnel through wireless transmission. Attached Figure Description

[0032] Figure 1 is a schematic diagram of one embodiment of this application;

[0033] Figure 2 is a cross-sectional view of the right end position of the guide rail according to an embodiment of this application;

[0034] Figure 3 is a cross-sectional view of the position of the second column according to an embodiment of this application;

[0035] Figure 4 is a flowchart of an adjustment method according to an embodiment of this application. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the technical solution of the present application will be further described in detail below with reference to the embodiments and accompanying drawings.

[0037] This application relates to a ventilation structure and its usage method developed for temporary enclosed passageways or areas requiring airflow variation. Specific embodiments according to this application will be described below with reference to Figure 1.

[0038] As shown in Figures 1 to 4, this application provides an air volume regulating device for mine roadways, including: an airbag module, an inflation module, and a fixing module.

[0039] The airbag module is composed of multiple airbags spliced ​​together;

[0040] The airbag is coated with an organosilicon coating; the coating is used to improve its heat resistance and airtightness.

[0041] The shape and size of the airbag module can also be customized and modified according to the actual dimensions of the tunnel.

[0042] In some embodiments, the airbag may be a rectangular airbag;

[0043] Rectangular airbags are used because the volume change during inflation and deflation may be greater compared to materials such as round airbag rods, making them more suitable for opening and closing doors.

[0044] In some embodiments, the airbag may be a rubber airbag;

[0045] The airbag is fireproof, high-strength, corrosion-resistant, and has a flexible and controllable size. The entire device is flexible and can be adjusted for ventilation or closure by means of the airbag.

[0046] Compared to materials like polyurethane, rubber airbags are less expensive and offer better elasticity, flexibility, wear resistance, and sealing properties. Alternatively, airbags can be made by combining TPU (thermoplastic polyurethane elastomer, also known as thermoplastic polyurethane rubber) with rubber. The outer layer of the airbag is made of TPU, providing heat resistance, high strength, and wear resistance, while the inner layer is made of rubber for better airtightness. Alternatively, modified polyamide 66, the material used in airbags for new energy vehicles, can also be used.

[0047] In some embodiments, a connecting strip is provided between each airbag, with a small hole in the middle, so that the inflation module can inflate each airbag.

[0048] In some embodiments, the connecting strip is made of rubber, which facilitates the deformation of the airbag and has good properties such as high temperature resistance, wear resistance, aging resistance, and airtightness, and is also low in cost.

[0049] The inflation module includes an air pump for inflation, an air supply valve, and a deflation valve. The air pump can also compress and deliver air, and the air supply valve can inflate the airbag. The deflation valve can automatically release the gas from the airbag.

[0050] The fixing module includes a first column, a second column, an upper guide rail, a lower guide rail, and guide wheels. The first column, upper guide rail, and lower guide rail are respectively installed on the left side, top, and bottom of the mine roadway. The left and right sides of the airbag module are fixed to the first and second columns respectively, forming an air door; the upper and lower sides of the airbag module are fixed to the upper and lower guide rails respectively; the upper and lower ends of the first column are fixed to the left sides of the upper and lower guide rails respectively; the upper and lower ends of the second column are equipped with guide wheels, which are paired with the guide rails and can roll on the pre-installed guide rails.

[0051] The airbag module is fixed between two columns and has a certain degree of flexibility. It can reach the rightmost end of the guide rail under the traction of the second column to achieve the closure of the tunnel.

[0052] In some embodiments, the right side surface of the first column is coated with an adhesive material, which can bond and fix the uninflated airbag module to it.

[0053] In some embodiments, the first column has two holes of suitable size, allowing the air supply valve and the air release valve of the airbag to pass through the first column.

[0054] In some embodiments, the upper and lower guide rails are provided with grooves on their left sides, and the upper and lower ends of the first column are respectively inserted into the grooves on the left sides of the upper and lower guide rails to achieve fixed and detachable installation.

[0055] In some embodiments, a first electromagnetic lock is installed on the second column, and a first adsorption plate paired with the first electromagnetic lock is installed on the right side of the airbag module; the first electromagnetic lock attracts the first adsorption plate to help fix the airbag to the second column.

[0056] In some embodiments, the first adsorption plate is a rectangular steel sheet. The shape and material of the first adsorption plate can be adjusted according to the actual use of the first electromagnetic lock. It can be other shapes and materials, as long as it can be paired with the first electromagnetic lock and assist the airbag in being fixed to the second column under the attraction of the first electromagnetic lock.

[0057] In some embodiments, the first and second columns may be made of aluminum alloy, magnesium alloy or glass fiber composite material, which is lightweight, easy to disassemble and transport, and has high strength.

[0058] In some embodiments, the first column includes two support sections, which can be bolted together to form the first column. When the airbag module needs to be replaced or the device needs to be removed, the first column can be separated into two sections for disassembly of the device. This structure facilitates assembly and disassembly.

[0059] In some embodiments, the rightmost ends of the upper and lower guide rails are respectively equipped with second electromagnetic locks for locking with the second column, thereby achieving the closure of the entire tunnel.

[0060] To accommodate ventilation adjustments, the airbag module has three states: fully inflated (e.g., the airbag module's pressure is at its maximum withstand pressure), completely sealing the roadway; partially inflated (e.g., the airbag module's pressure is half of its maximum withstand pressure), creating gap ventilation (opening degree 20%-80%, e.g., 50%); and low-pressure state, where the airbag module shrinks to its minimum volume, and the device's opening degree reaches over 80%.

[0061] Based on the actual air pressure conditions in the tunnel, the air pressure range within the airbag module under different states and the corresponding inflation / deflation parameters (such as inflation / deflation duration) for switching between different states are predetermined. During state switching, the state switching process can be precisely controlled based on the air pressure range within the airbag module under the three states and the corresponding inflation / deflation parameters for switching between different states.

[0062] In some embodiments, the inflation module further includes an inflation valve (such as a gate valve or a full-bore ball valve) disposed on the inflation pipeline of the air pump. The inflation valve can supply air when fully open. Since the device is frequently inflated and deflated, the pressure requirements for the inflation valve are high, resulting in significant wear. The presence of an inflation valve provides redundancy, enhancing safety and long-term reliability.

[0063] In some embodiments, the gas supply valve, the vent valve, and the gas pipeline valve are all solenoid valves for remote control.

[0064] In some embodiments, the gas pipeline valve may be a gate valve or a full-bore ball valve. Gate valves or full-bore ball valves have low gas delivery resistance and low pressure loss, which can reduce energy loss. Full-bore ball valves are preferred because they have no necking effect, smooth flow lines, and better performance in terms of pressure loss.

[0065] In some embodiments, the device further includes a sensor module and a central control module;

[0066] The fixing module, inflation module, sensor module, and main control module are communicatively connected. The main control module is used to receive data collected by the sensor module, control the inflation module to inflate and deflate the airbag model, and control the movement of the guide wheels of the fixing module.

[0067] The main control module includes a main control unit and a wireless communication module. The main control unit is wirelessly connected to the fixing module, the inflation module, the sensor module and the main control module through the wireless communication module.

[0068] The sensor module includes a first differential pressure sensor for measuring the pressure difference before and after the damper and a wind speed sensor for measuring the wind speed in the roadway. The first differential pressure sensor and the wind speed sensor transmit the collected data to the main control unit through a wireless transmission module.

[0069] In one possible implementation, the sensor module further includes a second differential pressure sensor for measuring the total differential pressure in the roadway. The second differential pressure sensor transmits the collected data to the main control unit via a wireless transmission module.

[0070] In some embodiments, the first differential pressure sensor and the wind speed sensor may be integrated sensors.

[0071] In some embodiments, the sensor module further includes a pressure sensor, which is installed on the airbag module and can detect changes in air pressure inside the airbag module at all times, and transmit the collected data to the main control unit via a wireless transmission module.

[0072] The main control module also includes an input / output module, which inputs control information.

[0073] The input / output module includes a display, which is connected to the main control unit and is used to display the status parameters collected by the sensor module, such as the inflation status parameters returned by the air pressure sensor.

[0074] The input / output module includes a first switch (such as a push-button switch) for switching between ventilation mode and non-ventilation mode.

[0075] In non-ventilated mode, the airbag module is fully inflated, the second column is locked at the rightmost end of the guide rail, the air door is closed, and the tunnel is completely sealed.

[0076] The ventilation modes include semi-ventilation mode and full ventilation mode.

[0077] In semi-ventilation mode, the airbag module is in a semi-inflated state, the second column moves to the midpoint of the guide rail, and the air damper is half-open. In full ventilation mode, the airbag module is in a low-pressure state, the second column retracts to its initial position, and the air damper is fully open. In addition, the main control unit has a remote control switch to control the air supply valve, air release valve, and air pump, thereby enabling remote control of the inflation operation.

[0078] The guide wheels on the second column can be rotated forward and backward under the remote control of the main control unit, thereby driving the second column to move left and right within the guide rail.

[0079] The input / output module includes a second switch (such as a push-button switch). In non-ventilation mode, if temporary passage is required after the tunnel is closed, the air door can be opened using the second switch.

[0080] It should be understood that the second switch is connected to the main control unit and sends the switch signal to the main control unit. The main control switch sends the switch signal to the guide wheel through the wireless communication module to realize remote control switching.

[0081] The door opening time threshold T is set via the input / output module. In non-ventilation mode, if the distance sensor or air pressure sensor detects that the door is open, a timer is started. If the calculated continuous opening time of the door exceeds the time threshold T, the main control unit automatically remotely controls the guide wheel to move the second column to the rightmost end of the guide rail for locking, thus automatically closing the door. This prevents staff from temporarily opening the door and forgetting to close it, ensuring automatic closing after a certain time.

[0082] [Corrected according to Rule 91, 16.06.2025] As shown in Figure 4, this application embodiment also provides a method for adjusting the air volume in a mine roadway. Using the above-mentioned device, the guide wheel drives the second column to move left and right along the guide rail, thereby driving the air door to open or close, realizing the ventilation and closure of the roadway, and realizing the air volume adjustment of the mine roadway.

[0083] When the entire device is put into use, the staff first installs the guide rails at the corresponding positions in the tunnel. According to the actual dimensions, they select an appropriate number of airbags of different sizes and attach them to the fixed support pillars. The first pillar is fixedly installed on the upper and lower guide rails. Then, the airbag modules are fixed to the second pillar. At this point, the air pump can be controlled by the main control unit to inflate the airbags. The airbags are not completely filled, leaving appropriate space so that the airbags will not close the tunnel under extreme conditions.

[0084] During inflation, the inflation time can be determined by the data displayed on the screen, so as to control the inflation status of the airbag module.

[0085] When it is necessary to close the tunnel, switch the system to non-ventilated mode, wait for the air to be fully charged, and then use the main control unit to control the second column to move to the right, locking the second column to the rightmost end of the guide rail, thus closing the tunnel section. Closure is achieved through an electromagnetic lock, which reduces friction and wear.

[0086] When the tunnel needs to be opened for operation, the electromagnetic lock is unlocked and the second column is moved by the remote control guide wheel, thus leaving enough space for people to enter the tunnel. Since there is a pre-reserved redundant space, the airbag module is not fully inflated and does not need to be completely deflated before the second column and airbag module can return to the left side.

[0087] When ventilation adjustment is required, the device is switched to ventilation mode, and the desired wind speed is selected as the target wind speed. The main control unit calculates the corresponding target opening based on the target wind speed and determines the required air pressure of the airbag module as the target air pressure based on the target opening. The target opening corresponds to the target position of the second column on the guide rail. The air pressure sensor collects the air pressure of the airbag module in the current state and transmits it to the main control unit to control the air pump to start and inflate the airbag module through the air supply valve or deflate it through the air release valve until the air pressure reaches the target air pressure. At the same time, the guide wheel is controlled to move the second column to the target position. The wind speed sensor collects the real-time wind speed of the roadway after adjustment and calculates the real-time wind speed V of the roadway after adjustment. 实时 and the preset target wind speed V 目标 The percentage of error e = (V 实时 -V 目标 ) / V 目标 *100%. If the error percentage exceeds the set threshold, the opening of the damper will be fine-tuned until the target wind speed is reached.

[0088] In some embodiments, the main control unit calculates the target opening θ of the damper according to the following formula. 目标 :

[0089] In the formula, ΔP 总 The total differential pressure in the roadway (MPa) is typically provided by the ventilation fan and does not change frequently. However, in cases where the ventilation fan malfunctions or cannot provide data, this data can be obtained by installing second differential pressure sensors at the beginning and end of the roadway. R 巷道 The roadway friction resistance (Ns) 2 / m 8 V 目标 Let ζ represent the local drag coefficient of the damper, and A be the preset target wind speed. 总 Indicates the total ventilation area of ​​the damper (m²) 2 A 总 ×θ 目标 Let the damper opening be θ 目标 The effective ventilation area of ​​the damper (m²) 2 ); indicates air density, using actual downhole measurements (kg / m³). 3 ); R 巷道 and A 总 The value of ζ can be measured by field instruments. 闭合 This refers to the local frictional resistance coefficient of the damper when it is fully closed; ζ 闭合 ×(1-θ 目标 ) 2 Indicates that the damper opening is θ 目标 The local frictional resistance coefficient of the damper under the following conditions;

[0090] With the damper opening at a known angle θ0, the corresponding pressure difference ΔP across the damper is measured using the first differential pressure sensor. 门 Real-time wind speed V in the alley 实时 Then through the formula The corresponding local resistance coefficient ζ0 of the damper is obtained. ζ0 and θ0 are then used as the values ​​of the local resistance coefficient ζ and the damper opening θ, respectively, and substituted into the empirical formula ζ = ζ 闭合 ×(1-θ) 2 ζ can be obtained 闭合 .

[0091] The guide wheel is equipped with a stepper motor, which can move precisely along the guide rail under the control of the main control unit to adjust the real-time opening θ of the damper; based on the calculated target opening θ of the damper... 目标 The wind speed is adjusted by regulating the real-time opening θ of the damper.

[0092] Adjust the real-time opening θ of the damper to the target opening θ. 目标Then, the real-time wind speed V in the roadway after adjustment was detected using a wind speed sensor. 实时 ; Calculate the real-time wind speed V in the roadway after adjustment 实时 and the preset target wind speed V 目标 The percentage of error e = (V 实时 -V 目标 ) / V 目标 *100%. If the error percentage exceeds the set threshold of 5%, the opening of the damper will be fine-tuned until the target wind speed is reached.

[0093] In some embodiments, the set threshold is 5%.

[0094] Wind speed changes are not linear. When the guide wheel moves, it may move too fast, causing it to bounce back and forth at the target wind speed position, always maintaining a certain difference from the target wind speed. This application first uses an empirical formula to calculate the opening corresponding to the target wind speed, estimating the damper opening corresponding to the target wind speed. After calculation, the guide wheel is controlled to move the second column to the position corresponding to that opening. If there is an error between the wind speed at that position and the target wind speed, the guide wheel can be moved left or right for fine adjustments to quickly reach the target wind speed.

[0095] In some embodiments, a scale is provided inside the guide rail, which can be used to measure the total length of the guide rail and can also serve as a basis for periodic manual inspection and maintenance. After long-term use, the device may experience movement or inaccurate measurement due to wear of the guide wheel, dust obstruction of the distance measuring laser sensor, etc. The scale inside the guide rail can facilitate observation of whether the actual distance moved by the guide wheel is consistent with the preset distance.

[0096] In some embodiments, the sensor module further includes distance sensors installed at the ends of the second column and the guide rail, respectively, for detecting the distance between the second column and the end of the guide rail, and obtaining the real-time opening θ of the damper by comparing the detected distance with the total length of the guide rail.

[0097] In the formula, θ represents the damper opening degree (%), and L 距 L represents the distance (m) between the second column and the end of the guide rail. Max This indicates the total length of the guide rail (m).

[0098] The real-time opening degree of the damper can be transmitted to the main control unit via a wireless transmission module, providing data for adjusting the wind speed.

[0099] In some embodiments, the ranging sensor may be an infrared ranging sensor or a laser ranging sensor.

[0100] In other implementations, when the device needs to be ventilated, the state is adjusted to ventilation mode, and the desired target opening degree is selected. The target opening degree corresponds to the target position of the second column on the guide rail. The main control unit determines the required air pressure of the airbag module as the target air pressure based on the target opening degree. The air pressure sensor collects the air pressure of the airbag module in the current state and transmits it to the main control unit to control the air pump to start and inflate the airbag module through the air supply valve or deflate it through the air release valve until the air pressure of the airbag module reaches the target air pressure. At the same time, the guide wheel is controlled to drive the second column to move to the target position.

[0101] In some embodiments, after selecting a target wind speed, it can be first determined whether the target wind speed meets the prescribed range. For example, the "Safety Regulations for Metal and Non-metal Mines" and the "Safety Regulations for Coal Mines" stipulate that the wind speed in underground transport roadways, mining area intake ventilation ducts, and other areas should not exceed 4 m / s to prevent dust and discomfort to personnel, while also needing to be greater than 0.25 m / s to prevent the accumulation of gases such as methane. Therefore, it is determined whether the target wind speed meets the prescribed range. If it does not meet the prescribed range, the staff is reminded to reset it, thereby preventing misoperation and ensuring safety.

[0102] In some embodiments, before making ventilation adjustments, it is first verified that the sensor can acquire complete data to ensure the integrity and reliability of the device.

[0103] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0104] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0105] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0106] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linked," and "socketing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0107] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An air volume adjusting device for a mine tunnel, characterized by comprising: The device comprises: an airbag module, an inflation module and a fixing module; the airbag module is composed of multiple airbags spliced together; the inflation module comprises an air pump for inflating the airbags, an air inlet valve and an air outlet valve for respectively controlling the inflation and deflation of the airbags; the fixing module comprises a first vertical column, a second vertical column, an upper guide rail, a lower guide rail and a guide wheel; the first vertical column, the upper guide rail and the lower guide rail are respectively installed on the left side, the top and the bottom of the mine roadway; the left and right sides of the airbag module are fixed with the first vertical column and the second vertical column respectively to form an air door; the upper and lower sides of the airbag module are fixed with the upper guide rail and the lower guide rail respectively; the upper and lower ends of the first vertical column are respectively fixed with the left side of the upper guide rail and the lower guide rail; the upper and lower ends of the second vertical column are both provided with the guide wheel, and the guide wheel is matched with the guide rail; the guide wheel is used to drive the second vertical column to move left and right along the guide rail, thereby driving the air door to open or close, realizing the ventilation and closure of the mine roadway.

2. The air volume adjusting device for a mine tunnel according to claim 1, characterized by The left side of the upper guide rail and the lower guide rail is provided with a groove, and the upper and lower ends of the first vertical column are respectively inserted into the grooves on the left side of the upper guide rail and the lower guide rail to realize the fixed and detachable installation.

3. The air volume adjusting device for a mine tunnel according to claim 1, characterized by The first vertical column comprises two sections of vertical columns which can be assembled together by bolts to form the first vertical column.

4. The air volume adjusting device for a mine tunnel according to any one of claims 1 to 3, characterized by The device further comprises a general control module and a sensor module; the fixing module, the inflation module, the sensor module and the general control module are in communication connection, the general control module is used to receive the data collected by the sensor module and control the inflation and deflation of the airbag module, and control the movement of the guide wheel of the fixing module.

5. The air volume adjusting device for a mine tunnel according to claim 4, characterized by The general control module comprises a general control unit and a wireless communication module, and the general control unit is in wireless communication connection with the fixing module, the inflation module, the sensor module and the general control module through the wireless communication module.

6. The air volume adjusting device for a mine tunnel according to claim 5, characterized by The sensor module comprises: a wind speed sensor installed on the second vertical column and used to measure the wind speed of the mine roadway; a first differential pressure sensor installed on the second vertical column and used to measure the pressure difference before and after the air door; an air pressure sensor installed on the airbag or an air inlet pipeline connected with the airbag and used to detect the air pressure in the airbag module; a pair of distance measuring sensors installed at the ends of the second vertical column and the guide rail respectively and used to detect the distance between the ends of the second vertical column and the guide rail; the wind speed sensor, the first differential pressure sensor, the air pressure sensor and the distance measuring sensor transmit the collected data to the general control unit through a wireless transmission module.

7. The air volume adjusting device for a mine tunnel according to claim 4, characterized by The general control module further comprises an input and output module; the input and output module comprises a display connected with the general control unit and used to display the state parameters collected by the sensor module; the input and output module further comprises a first switch connected with the general control unit and used to input the control signal for switching the state of the air door.

8. A method for air volume adjustment for mine galleries, characterized in that, The device of any one of claims 1-10 is used to drive the second vertical column to move left and right along the guide rail through the guide wheel, thereby driving the air door to open or close, realizing the ventilation and closure of the mine roadway and adjusting the air volume of the mine roadway.

9. The method for air volume adjustment in mine roadways according to claim 8, characterized in that, The method comprises: When the device needs to be ventilated, a target wind speed is selected; the main control unit calculates the corresponding target opening degree according to the target wind speed, and determines the required air pressure of the air bag module as the target air pressure according to the target opening degree, wherein the target opening degree corresponds to the target position of the second stand on the guide rail; the air pressure sensor collects the air pressure of the air bag module in the current state and transmits it to the main control unit to control the air pump to start inflating or deflating through the air valve to make the air pressure of the air bag module reach the target air pressure, while controlling the guide wheel to drive the second stand to move to the target position; the wind speed sensor collects the adjusted real-time wind speed of the roadway; the error percentage of the adjusted real-time wind speed V 实时 of the roadway and the preset target wind speed V 目标 is calculated, and if the error percentage exceeds the set threshold, the opening degree of the damper is fine-tuned until the target wind speed is reached.

10. The method for air volume adjustment for mine tunnels as defined in claim 8, characterized in that, The method further comprises: When the device needs to be ventilated, a desired target opening degree is selected, wherein the target opening degree corresponds to a target position of the second column on the guide rail, and the main control unit determines the required air pressure of the air bag module as a target air pressure according to the target opening degree; the air pressure sensor collects the air pressure of the air bag module in the current state and transmits it to the main control unit to control the air pump to start inflating or deflating through the air inlet valve or the air outlet valve to make the air pressure of the air bag module reach the target air pressure, while controlling the guide wheel to drive the second column to move to the target position.

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