An adaptive rectification anti-pollution flow measuring device based on a mine-hung system
By using an adaptive rectification and anti-pollution flow measurement device based on the mining system, the number of ventilation holes in the rectifier plate is dynamically adjusted through the coordinated work of sensors and servo motors. This solves the measurement accuracy problem of fixed aperture structures under complex working conditions and achieves high accuracy and stability in flow measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENHUA SHENDONG COAL GRP
- Filing Date
- 2025-09-10
- Publication Date
- 2026-06-23
AI Technical Summary
Existing flow sensors, with their fixed orifice structure, cannot adaptively adjust to changes in flow conditions under complex operating conditions, leading to a decrease in measurement accuracy.
An adaptive rectification and anti-pollution flow measurement device based on the mining system is adopted. Data is collected in real time through dust sensors and wind speed sensors. The central control module analyzes and controls the servo motor to drive the elliptical block and toothed plate, dynamically adjusting the number of ventilation holes in the rectifier plate. Combined with the air blower to clean the dust, the flow rate and dust concentration are dynamically monitored and adaptively adjusted.
It improves the accuracy and stability of flow measurement, avoids flow field distortion and measurement errors, and enhances the reliability and adaptability of the device under complex operating conditions.
Smart Images
Figure CN224398724U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-pollution flow measurement technology, and in particular to an adaptive rectification anti-pollution flow measurement device based on a mining system. Background Technology
[0002] With the development of industrial automation and intelligence, flow monitoring equipment is gradually evolving towards higher precision, intelligence, and adaptability. In complex working conditions such as mines, metallurgy, chemical industry, and tunnel ventilation, flow measurement not only needs to maintain stability in environments with high dust concentrations and significant airflow fluctuations, but also needs to have the ability to interact with upper-level management systems and make intelligent decisions. Existing technology utilizes the HarmonyOS mining operating system, jointly launched by Huawei and the State Energy Group. As an industrial control and IoT platform based on HarmonyOS, the HarmonyOS system has advantages such as distributed architecture, low-latency communication, and multi-device collaboration. It can process and analyze data collected by field sensors in real time, and issue instructions to actuators in combination with preset logical rules or intelligent algorithms, thereby improving the overall intelligence level and environmental adaptability of monitoring.
[0003] Existing flow sensors typically employ a rectifier structure with a fixed number of orifices. Their working principle relies on the formation of a stable flow field as airflow passes through a rectifier with a fixed geometry, enabling relatively accurate flow measurement. In environments with relatively stable airflow conditions and minimal changes in dust concentration, these sensors can maintain a certain level of measurement accuracy. However, in practical industrial applications, airflow within pipelines often experiences significant fluctuations. For example, material input during mining, metallurgical, and chemical production processes, or the start-up, shutdown, or load changes of upstream equipment such as fans, compressors, or exhaust devices, can cause sudden increases in dust concentration due to changes in production conditions. When flow velocity changes drastically or pollutant concentrations are excessively high, the fixed-orifice structure cannot adaptively adjust to changes in flow conditions, easily leading to flow field distortion and sensor output signal deviation. This results in a significant decrease in measurement accuracy, making it difficult for such sensors to meet the demands of precise measurement under complex operating conditions. Utility Model Content
[0004] In view of this, the purpose of this utility model is to propose an adaptive rectification and anti-pollution flow measurement device based on a mining system, so as to solve the problem that existing flow sensors usually adopt a fixed aperture rectification structure, which cannot adaptively adjust according to changes in flow state.
[0005] To achieve the above objectives, this utility model provides an adaptive rectification and anti-pollution flow measurement device based on a mining system, comprising a detection tube, flanges for connecting the detection tube fixedly connected to both ends, a mounting shell fixedly connected to the bottom of the detection tube, a servo motor fixedly installed inside the mounting shell, a first cavity formed at the bottom of the inner wall of the detection tube, the output end of the servo motor passing through the first cavity and fixedly connected to an elliptical block, toothed plates slidably connected to both sides of the inner wall of the first cavity near the elliptical block, three sets of toothed grooves formed on the sidewalls of the toothed plates, each set of toothed grooves consisting of multiple equidistant teeth, and three sets of incomplete gears rotatably connected to the inner wall of the first cavity near the sidewalls of the toothed plates. The shafts of the three sets of incomplete gears all penetrate into the interior of the detection tube and are fixedly connected to rectifier plates. Ventilation holes are provided on the side walls of the three sets of rectifier plates. The number of ventilation holes on the side walls of the three sets of rectifier plates gradually increases towards both ends of the detection tube. When the tooth groove moves to the side wall of the incomplete gear, it will mesh with the teeth of the incomplete gear and drive the incomplete gear to rotate. A torsion spring is sleeved on the shaft of the incomplete gear. The two ends of the torsion spring are fixedly connected to the shaft of the incomplete gear and the top of the inner wall of the first cavity, respectively. A cleaning component for blowing and cleaning the ventilation holes is provided inside the detection tube. An environmental measurement component for measuring the flow rate and dust inside the detection tube (1) is provided inside the detection tube.
[0006] The preferred cleaning assembly includes an air blower fixedly connected to the top of the detection tube. The inner wall of the detection tube has a second cavity, and a diverter pipe is fixedly connected inside the second cavity. The output end of the air blower is connected to the inside of the diverter pipe. Both ends of the bottom of the diverter pipe are connected to air nozzles near the side walls of the rectifier plate for cleaning dust from the inner wall apertures of the ventilation holes.
[0007] The preferred environmental measurement component includes a central control module fixedly connected to the outer wall of the detection tube, and two dust sensors and a wind speed sensor for detecting dust concentration and flow rate are fixedly connected inside the detection tube.
[0008] When the dust sensor and wind speed sensor collect data on the wind speed and dust concentration inside the detection tube, the dust sensor and wind speed sensor transmit the collected data to the central control module. The central control module detects whether the data changes abruptly. When the central control module detects that the collected data is higher than a threshold, it sends a signal to the servo motor. The servo motor then drives the elliptical block to rotate. The elliptical block pushes the toothed plates on both sides to slide to both sides and drives the rectifier plate with a larger number of ventilation holes to rotate.
[0009] Preferably, each of the two toothed plates is rotatably connected to a roller at one end near the elliptical block, and the roller is slidably connected to the side wall of the elliptical block.
[0010] Preferably, when the two toothed plates move to both sides, they first mesh with the rectifier plate near the elliptical block and drive the rectifier plate to rotate 90°. When the environmental measurement component detects dust and wind speed changes, it will start the servo motor to continue driving the elliptical block to rotate and push the toothed plates to continue sliding and drive the adjacent rectifier plate to rotate 90°. The rectifier plate near the elliptical block will continue to rotate 90° and be in a vertical state.
[0011] Preferably, the plurality of air nozzles are inclined toward the direction of the rectifier plate.
[0012] The beneficial effects of this utility model are:
[0013] 1. This adaptive rectification and anti-pollution flow measurement device based on the mining system achieves real-time acquisition of dust concentration and flow velocity within the pipeline by installing dust and wind speed sensors inside the detection tube. The acquired data is transmitted to a central control module fixedly connected to the outer wall of the detection tube for analysis and judgment. When the airflow fluctuates violently or the dust concentration suddenly exceeds a preset threshold, the central control module sends a control signal to the servo motor, causing the servo motor to drive the elliptical block to rotate, pushing the toothed plates on both sides to slide. Through the meshing of the toothed plates and the incomplete gear, the rectifier plate is driven to rotate in sequence, allowing the rectifier plate to adjust the number of ventilation holes according to the working conditions. The above coordinated operation can realize dynamic monitoring of flow rate and dust concentration and adaptive adjustment of the rectifier plate, effectively overcoming the problems of existing rectifier plate structures with fixed hole diameters that are prone to flow field distortion and large measurement deviations under conditions of large airflow fluctuations and sudden changes in dust concentration, thus improving the measurement accuracy and the stability and reliability of the device under complex working conditions.
[0014] 2. This adaptive rectification and anti-pollution flow measurement device based on the mining system, by setting an air blower at the top of the detection tube and connecting it with the second cavity on the inner wall and the diversion pipe, can evenly distribute the airflow of the air blower to both ends of the diversion pipe when it is necessary to clean the three sets of rectifier plates. Then, it is sprayed into the inner wall of the ventilation hole of the rectifier plate through the air nozzle, thereby effectively cleaning the dust particles attached to the hole. This structure can keep the ventilation hole in a smooth state for a long time, avoid airflow blockage and measurement errors caused by dust blockage, and improve the long-term stability and reliability of the device. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;
[0017] Figure 2 This is a three-dimensional cross-sectional view of the detection tube of this utility model;
[0018] Figure 3 This is a three-dimensional structural diagram of the rectifier plate and ventilation holes of this utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of the toothed plate and toothed groove of this utility model;
[0020] Figure 5 This utility model Figure 4 Enlarged 3D structural diagram at point A in the middle;
[0021] Figure 6 This is a three-dimensional structural diagram of the environmental monitoring workflow of this utility model.
[0022] The diagram is marked as follows:
[0023] 1. Detection tube; 2. Flange; 3. Mounting housing; 4. Servo motor; 5. First cavity; 6. Elliptical block; 7. Gear plate; 8. Gear groove; 9. Incomplete gear; 10. Rectifier plate; 11. Ventilation hole; 12. Torsion spring; 13. Air blower; 14. Second cavity; 15. Diverter pipe; 16. Air nozzle; 17. Roller. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.
[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0026] like Figures 1 to 6As shown, an adaptive rectification and anti-pollution flow measurement device based on a mining system includes a detection tube 1. Flanges 2 are fixedly connected to both ends of the detection tube 1. A mounting shell 3 is fixedly connected to the bottom of the detection tube 1. A servo motor 4 is fixedly installed inside the mounting shell 3. A first cavity 5 is formed at the bottom of the inner wall of the detection tube 1. The output end of the servo motor 4 passes through the first cavity 5 and is fixedly connected to an elliptical block 6. Toothed plates 7 are slidably connected to both sides of the inner wall of the first cavity 5 near the elliptical block 6. Three sets of toothed grooves 8 are formed on the side walls of the toothed plates 7, each set of toothed grooves 8 consisting of multiple equidistant teeth. Three sets of incomplete gears 9 are rotatably connected to the inner wall of the first cavity 5 near the side walls of the toothed plates 7. The shafts are all inserted into the inside of the detection tube 1 and fixedly connected to the rectifier plate 10. The side walls of the three rectifier plates 10 are all provided with ventilation holes 11. The number of ventilation holes 11 on the side walls of the three rectifier plates 10 gradually increases towards both ends of the detection tube 1. When the tooth groove 8 moves to the side wall of the incomplete gear 9, it will mesh with the teeth of the incomplete gear 9 and drive the incomplete gear 9 to rotate. The shaft of the incomplete gear 9 is fitted with a torsion spring 12. The two ends of the torsion spring 12 are fixedly connected to the shaft of the incomplete gear 9 and the top of the inner wall of the first cavity 5, respectively. The inside of the detection tube 1 is provided with a cleaning component for blowing and cleaning the ventilation holes 11. The inside of the detection tube 1 is provided with an environmental measurement component for measuring the flow rate and dust inside the detection tube (1).
[0027] When the airflow inside the pipe is in operation, the dust sensor and wind speed sensor installed inside the detection tube 1 collect the dust concentration and flow rate in real time, and transmit the acquired data to the central control module based on the mining system. The central control module analyzes and compares the collected data. When it detects a violent fluctuation in airflow or a sudden increase in dust concentration exceeding a preset threshold, the central control module immediately sends a control signal to the servo motor 4. The servo motor 4 drives the elliptical block 6 to rotate. The rotation of the elliptical block 6 pushes the toothed plates 7 on both sides to slide to the sides. During the sliding process, the toothed plates 7 mesh with the incomplete gear 9 and compress the torsion spring 12, thereby driving the rectifier plates 10 to rotate. The set of rectifier plates 10 closest to the elliptical block 6 meshes and rotates 90° first. At this time, the outer wall of the set of rectifier plates 10 closest to the elliptical block 6 contacts the inner wall of the detection tube 1 to rectify the airflow. The other two sets are vertically set and do not rectify the airflow. Subsequently, when the environmental measurement component detects another large change in dust and wind speed, the servo motor 4 will continue to drive the elliptical block 6 to rotate, pushing the toothed plates 7 to continue sliding to the sides. The incomplete gear 9 at the bottom of the adjacent rectifier plate 10 meshes and rotates 90°. Then, the rectifier plate 10 in the middle group will contact the inner wall of the detection tube 1 to rectify the flow. The rectifier plate 10 on the side closer to the elliptical block 6 will eventually rotate to a vertical position and will not rectify. The rectifier plate 10 in the group farther away from the elliptical block 6 will rotate and rectify in the same way. To reset, the toothed plate 7 only needs to slide in the opposite direction and drive the incomplete gear 9 to re-mesh, which will drive the rectifier plate 10 to reset. Each time rectification is performed, only one group of rectifier plates 10 will rotate to rectify, thereby realizing the dynamic adjustment of the rectifier. This ensures that the airflow can maintain a relatively stable flow field under different working conditions, avoiding the flow field distortion and measurement deviation caused by the sudden change in flow rate or the increase in dust concentration in traditional fixed aperture rectifiers. Through the above process, the environmental measurement component detects changes in airflow and dust, the central control module judges and issues commands, and the servo motor 4 drives the rectifier plate 10 to dynamically adjust. This solves the problem that the existing fixed aperture rectifier structure cannot adaptively adjust under complex working conditions, resulting in a decrease in measurement accuracy.
[0028] Further, see attached document. Figure 2 As shown, the cleaning assembly includes an air blower 13 fixedly connected to the top of the detection tube 1. A second cavity 14 is opened in the inner wall of the detection tube 1. A diversion tube 15 is fixedly connected inside the second cavity 14. The output end of the air blower 13 is connected to the inside of the diversion tube 15. Both ends of the bottom of the diversion tube 15 are connected to the side walls near the rectifier plate 10, and air nozzles 16 are used to clean dust from the inner wall aperture of the ventilation hole 11.
[0029] By installing an air blower 13 at the top of the detection tube 1 and connecting it with the second cavity 14 on the inner wall and the diversion pipe 15, when the three sets of rectifier plates 10 need to be cleaned, the airflow of the air blower 13 can be evenly distributed to both ends of the diversion pipe 15, and then sprayed into the inner wall of the ventilation hole 11 of the rectifier plate 10 through the air nozzle 16, thereby effectively cleaning the dust particles attached to the hole. This structure can keep the ventilation hole 11 in a smooth state for a long time, avoid airflow blockage and measurement errors caused by dust blockage, and improve the long-term stability and reliability of the device.
[0030] Further, see attached document. Figures 2 to 6 As shown, the environmental measurement component includes a central control module fixedly connected to the outer wall of the detection tube 1. Inside the detection tube 1, there are two dust sensors and a wind speed sensor fixedly connected to detect dust concentration and flow rate. When the dust sensors and wind speed sensors collect the wind speed and dust concentration inside the detection tube 1, they transmit the collected data to the central control module. The central control module detects whether the data changes abruptly. When the central control module detects that the collected data is higher than the threshold, it sends a signal to the servo motor 4. The servo motor 4 then drives the elliptical block 6 to rotate. The elliptical block 6 pushes the toothed plates 7 on both sides to slide to both sides and drives the rectifier plate 10 with a larger number of ventilation holes 11 to rotate.
[0031] By placing the environmental measurement components on the outer wall of the detection tube 1 and installing dust and wind speed sensors inside, real-time acquisition and monitoring of dust concentration and flow rate within the detection tube 1 are achieved. The dust and wind speed sensors transmit the collected data to the central control module, which analyzes and judges the data. When airflow fluctuations or sudden changes in dust concentration exceeding a preset threshold are detected, a control signal is immediately sent to the servo motor 4. The servo motor 4 drives the elliptical block 6 to rotate, and the elliptical block 6 pushes the toothed plates 7 on both sides to slide, so that the three sets of rectifier plates 10 gradually adjust the number of ventilation holes 11. When the airflow is adjusted and the dust sensor is normal, the rectifier plate 10 with the smaller number of ventilation holes 11 will be maintained, realizing the dynamic adjustment of the rectifier. This structure can respond quickly according to the actual working conditions, realize stable airflow rectification, improve the accuracy and reliability of flow measurement, and enhance the adaptability of the rectifier device under complex working conditions.
[0032] Further, see attached document. Figure 3 As shown, rollers 17 are rotatably connected to one end of each toothed plate 7 near the elliptical block 6, and the rollers 17 are slidably connected to the side wall of the elliptical block 6.
[0033] The roller 17 reduces the friction between the toothed plate 7 and the outer wall of the elliptical block 6, thereby reducing wear and increasing service life.
[0034] Further, see attached document. Figures 3 to 4As shown, when the two toothed plates 7 move to both sides, they will first mesh with the rectifier plate 10 on the side closer to the elliptical block 6 and drive the rectifier plate 10 to rotate 90°. When the environmental measurement component detects dust and wind speed changes, it will start the servo motor 4 to continue to drive the elliptical block 6 to rotate and push the toothed plates 7 to continue to slide and drive the adjacent rectifier plate 10 to rotate 90°. The rectifier plate 10 on the side closer to the elliptical block 6 will continue to rotate 90° and be in a vertical state.
[0035] When the toothed plate 7 moves to both sides, it first meshes with the rectifier plate 10 closest to the elliptical block 6, causing it to rotate 90°, thus putting that group of rectifier plates 10 into rectification mode. Subsequently, when the environmental measurement component detects further changes, the servo motor 4 again drives the elliptical block 6 to push the toothed plate 7 to slide, causing the adjacent rectifier plates 10 to rotate sequentially. Finally, the rectifier plate 10 closest to the elliptical block 6 rotates to a vertical position and ceases rectification. This step-by-step rotation method ensures that only one group of rectifier plates 10 is in rectification mode at any given time, achieving step-by-step dynamic adjustment of the airflow, ensuring a stable rectification effect, and avoiding sudden changes in the airflow field.
[0036] Further, see attached document. Figure 2 As shown, multiple air nozzles 16 are inclined toward the rectifier plate 10, and the multiple air nozzles 16 are inclined toward the rectifier plate 10, so that the jet airflow can directly impact the inner wall of the ventilation hole 11, thereby achieving effective flushing of the hole.
[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0038] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An adaptive rectification and anti-pollution flow measurement device based on a mining system, comprising a detection tube (1), wherein flanges (2) for connecting the detection tube (1) are fixedly connected to both ends of the detection tube (1), characterized in that: The bottom of the detection tube (1) is fixedly connected to a mounting shell (3), and a servo motor (4) is fixedly installed inside the mounting shell (3). A first cavity (5) is opened at the bottom of the inner wall of the detection tube (1). The output end of the servo motor (4) passes through the first cavity (5) and is fixedly connected to an elliptical block (6). The inner wall of the first cavity (5) is slidably connected to both sides of the elliptical block (6). The side wall of the toothed plate (7) is provided with three sets of tooth grooves (8). Each set of tooth grooves (8) has multiple equidistant teeth. The inner wall of the first cavity (5) is rotatably connected to the side wall of the toothed plate (7). The shafts of the three sets of incomplete gears (9) all pass through the inside of the detection tube (1) and are fixedly connected to a rectifier plate (10). Ventilation holes (11) are provided on the side walls of the three sets of rectifier plates (10). The number of ventilation holes (11) on the side walls of the three sets of rectifier plates (10) gradually increases towards both ends of the detection tube (1). When the tooth groove (8) moves to the side wall of the incomplete gear (9), it will mesh with the teeth of the incomplete gear (9) and drive the incomplete gear (9) to rotate. The shaft of the incomplete gear (9) is fitted with a torsion spring (12). The two ends of the torsion spring (12) are respectively fixedly connected to the shaft of the incomplete gear (9) and the top of the inner wall of the first cavity (5). The inside of the detection tube (1) is provided with a cleaning component for blowing and cleaning the ventilation holes (11). The inside of the detection tube (1) is provided with an environmental measurement component for measuring the flow rate and dust inside the detection tube (1).
2. The self-adapting flow measurement device based on the mine-hung system and the anti-pollution according to claim 1, wherein, The cleaning assembly includes an air blower (13) fixedly connected to the top of the detection tube (1). The inner wall of the detection tube (1) is provided with a second cavity (14). A diversion tube (15) is fixedly connected inside the second cavity (14). The output end of the air blower (13) is connected to the inside of the diversion tube (15). The bottom ends of the diversion tube (15) are connected to the side walls near the rectifier plate (10) with air nozzles (16) for cleaning dust from the inner wall aperture of the ventilation hole (11).
3. The self-adapting flow measurement device based on the mine-hung system and the anti-pollution according to claim 1, characterized in that, The environmental measurement component includes a central control module fixedly connected to the outer wall of the detection tube (1), and two dust sensors and wind speed sensors for detecting dust concentration and flow rate are fixedly connected inside the detection tube (1).
4. The self-adapting flow measurement device based on the mine-hung system according to claim 3, characterized in that, When the dust sensor and wind speed sensor collect the wind speed and dust concentration in the detection tube (1), the dust sensor and wind speed sensor will transmit the collected data to the central control module. The central control module will detect whether the data changes abruptly. When the central control module detects that the collected data is higher than the threshold, it will send a signal to the servo motor (4). The servo motor (4) will drive the elliptical block (6) to rotate. The elliptical block (6) will push the toothed plates (7) on both sides to slide to both sides and drive the rectifier plate (10) with a larger number of ventilation holes (11) to rotate.
5. The self-cleansing flow measuring device of claim 4, wherein the flow measuring device is a mine-hose system based self-cleansing flow measuring device. Both of the toothed plates (7) are rotatably connected to a roller (17) at one end near the elliptical block (6), and the roller (17) is slidably connected to the side wall of the elliptical block (6).
6. The self-cleansing flow measuring device of claim 1, wherein the self-cleansing flow measuring device is based on a mine-hose system. When the two toothed plates (7) move to both sides, they will first mesh with the rectifier plate (10) on the side closer to the elliptical block (6) and drive the rectifier plate (10) to rotate 90°. When the environmental measurement component detects dust and wind speed changes, it will start the servo motor (4) to continue to drive the elliptical block (6) to rotate and push the toothed plates (7) to continue to slide and drive the adjacent rectifier plate (10) to rotate 90°. The rectifier plate (10) on the side closer to the elliptical block (6) will continue to rotate 90° and be in a vertical state.
7. The self-cleansing flow measuring device of claim 2, wherein the self-cleansing flow measuring device is based on a mine-hose system. The multiple air nozzles (16) are inclined toward the rectifier plate (10).