AU2015377049B2 - Coal mine air channel ventilation flow online monitoring system - Google Patents
Coal mine air channel ventilation flow online monitoring system Download PDFInfo
- Publication number
- AU2015377049B2 AU2015377049B2 AU2015377049A AU2015377049A AU2015377049B2 AU 2015377049 B2 AU2015377049 B2 AU 2015377049B2 AU 2015377049 A AU2015377049 A AU 2015377049A AU 2015377049 A AU2015377049 A AU 2015377049A AU 2015377049 B2 AU2015377049 B2 AU 2015377049B2
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- AU
- Australia
- Prior art keywords
- fixed bearing
- coal mine
- guide rail
- sliding guide
- circumferential flow
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/08—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measuring Volume Flow (AREA)
Abstract
A coal mine air channel ventilation flow online monitoring system, comprising a data collecting system and a data processing system, the data processing system consisting of a data processor (10) and a display device (12), the data processor (10) being electrically connected to the display device (12); the data collecting system comprises a fixed bearing (1), a torque sensor (2), an airflow member (4), an upper sliding rail (8) and a lower sliding rail (6); an upper end and a lower end of the fixed bearing (1) are respectively in sliding connection with the upper sliding rail (8) and the lower sliding rail (6); the airflow member (4) is disposed on the fixed bearing (1), and the torque sensor (2) is disposed on the airflow member (4) and is electrically connected to the data processor (10). The invention can achieve sampling of multiple points and real-time output, increasing the precision and reliability of measurements and facilitating monitoring.
Description
ONLINE COAL MINE AIR DUCT VENT FLOW MONITORING
SYSTEM
BACKGROUND
Technical Field
The present invention relates to an online coal mine air duct vent flow monitoring system, which falls within the technical field of the coal mine vent flow monitoring.
Related Art
Being influenced by objective natural conditions, a failure rate of fixed equipment for coal production is far higher than that of other industrial equipment. A ventilator is one of critically important mine equipment in the coal production and plays a role in supplying air to a mine so as to decrease a concentration of harmful gases and to bring away the suspending coal dust, thereby providing a safe, reliable and good working condition to operation workers of the mine; and the performance of the ventilator concerns the personal safety of the working personnel and the operation economy of the equipment, and the performance degradation and the failure of the ventilator are main reasons for gas explosion. Therefore, as long as the operation monitoring and later maintenance are carried out for the ventilator reasonably, the underground safety of the coal mine can be guaranteed, the underground operation environment can be improved, and the economic benefit and the working efficiency of the ventilator can be improved. A measurement environment in a coal mine ventilation duct is hostile, which mainly reflects on a great amount of impurities, dust and water vapor carried in the airflow and unstable airflow direction, thus resulting in incapability of some coal mine vent flow measuring methods at present for measuring the flow or in relatively big measurement error. At present, a ventometer measurement method, a piezometric tube measurement method, a differential pressure gauge measurement method and the like are generally adopted to measure the vent flow of mines in actual use.
For the ventometer measurement method, an air measurement point is required to be 1 selected from a cross section with most stable airflow and minimum eddy current at a place between a resistance adjusting apparatus and the ventilator; however, due to the in-situ layout of the air duct, such uniform air velocity field measurement cross section with a sufficient length is difficult to select, so a big error is present in the measurement result. In addition, the working personnel needs to enter the air duct, not only is the measurement accuracy influenced, but also the labor condition is poor, and the occupied time is relatively long. Meanwhile, this method cannot be used to perform the online monitoring.
In the piezometric tube measurement method and the differential pressure gauge measurement method, a pitot tube has relatively high sensitivity to the airflow direction, the measurement accuracy is generally influenced by the deviation to the airflow direction subjected to the blowing of the airflow due to the inaccuracy or insecurity in installation; and moreover, the actual measurement of an air volume in the mine is carried out in the ventilation duct, while the actual measurement condition in the air duct of the mine is relatively hostile, a great amount of impurities, dust and water vapor are carried out in the airflow, thus easily leading to the problems such as the blockage of a pressure hole, and resulting in failure of a flowmeter, and incapability of guaranteeing the measurement accuracy and reliability.
As can be seen, various existing measurement techniques have different disadvantages in the measurement process and cannot work efficiently and precisely for a long time in a hostile environment in the air duct. Therefore, the existing air duct vent flow measurement technology needs to be effectively improved.
SUMMARY
With regard to the above problems in the prior art, the present invention provides an online coal mine air duct vent flow monitoring system, which can realize the multi-point sampling and real-time output, and allows a measurement result to be more accurate and reliable and be convenient to monitor.
In order to achieve the above purpose, a technical solution of the present invention is as follows: the online coal mine air duct vent flow monitoring system comprises a data 2 acquisition system and a data processing system, wherein the data acquisition system is electrically connected with the data processing system, the data processing system consists of a data processor and a display device, the data processor is electrically connected with the display device, the data acquisition system comprises a fixed bearing, torque sensors, circumferential flow objects, an upper sliding guide rail and a lower sliding guide rail; and the upper end and the lower end of the fixed bearing are respectively connected with the upper sliding guide rail and the lower sliding guide rail in a sliding manner, the circumferential flow objects are arranged on the fixed bearing, the torque sensors are arranged on the circumferential flow objects, and the torque sensors are electrically connected with the data processor.
In order to facilitate the movement of the fixed bearing in a coal mine air duct, the upper end and the lower end of the fixed bearing are respectively connected with the upper sliding guide rail and the lower sliding guide rail through an upper sliding sleeve and a lower sliding sleeve in a sliding manner.
In order to facilitate the rotation of the circumferential flow objects on the fixed bearing, the fixed bearing is provided with rotating shaft sleeves, and the circumferential flow objects are connected with the fixed bearing through the rotating shaft sleeves.
In order to further enlarge the multi-point measurement, there are three circumferential flow objects, and each circumferential flow object is respectively connected with the fixed bearing through one rotating shaft sleeve. 1. The present invention has the beneficial effects that: 1. the present invention respectively measures an acting force generated by the flowing of fluid at different positions in the measurement axial direction through a plurality of circumferential flow objects in the axial direction of the fixed bearing and an acting force generated by the flowing of fluid at different positions in the horizontal direction through the motion of the circumferential flow objects in the horizontal direction, thereby realizing the multi-point, effective and accurate measurement on the flow rate of the fluid at different positions in the whole coal mine air duct, so that the measured coal mine air duct vent flow is more accurate and effective. 3 2. The measurement process is not limited to the structural layout of roadways of the ventilation duct, not influenced by the great amount of impurities, dust and water vapor carried in the airflow and not influenced by factors such as the unstable airflow direction, so that the measurement result is more precise and more reliable. 3. Since the circumferential flow objects are installed in the axial direction, the influence caused by the moment generated by the gravity can be effectively avoided, and the result is more accurate. 4. The measurement system part of the present invention is convenient to install, and parts are uneasy to wear, block and damage, so that the coal mine vent flow can be measured on line for a long time, and the economy can be realized. 5. The present invention measures the coal mine air duct vent flow according to a mechanical mechanism, and the calculation process involves in various parameters of the fluid except for the flow rate and density, so that the influence on the measurement result in the conversion process is smaller, and the obtained result is more accurate and reliable. 6. The present invention is provided with the display device, so the coal mine vent flow can be intuitively and immediately displayed on line through a transmission wire and is convenient to monitor by the working personnel.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a structural schematic diagram of the present invention;
In the drawing: 1, fixed bearing; 2, torque sensor; 3, rotating shaft sleeve; 4, circumferential flow object; 5, lower sliding sleeve; 6 lower sliding guide rail; 7, upper sliding sleeve; 8, upper sliding guide rail; 9, data transmission wire; 10, data processor; 11, data connection wire; 12 display device.
DETAILED DESCRIPTION
The present invention is further described below with reference to the attached drawing.
Description about the mechanical connection: as shown in Fig. 1, the online coal mine 4 air duct vent flow monitoring system comprises the data acquisition system and the data processing system, wherein the data acquisition system is electrically connected with the data processing system, the data processing system consists of the data processor 10 and the display device 12, the data processor 10 is electrically connected with the display device 12, the data acquisition system is installed in a coal mine air duct, and the data acquisition system comprises the fixed bearing 1, the torque sensors 2, the circumferential flow objects 4, the upper sliding guide rail 8 and the lower sliding guide rail 6; and the upper sliding guide rail 8 is fixed at the upper edge of the air duct, the lower sliding guide rail 6 is fixed at the lower edge of the air duct, the upper end and the lower end of the fixed bearing 1 are respectively connected with the upper sliding guide rail 8 and the lower sliding guide rail 6 in a sliding manner, the circumferential flow objects 4 are arranged on the fixed bearing 1, the torque sensors 2 are arranged on the circumferential flow objects 4, the torque sensors 2 are electrically connected with the data processor 10 through a data transmission wire 9, and the data processing system is installed in a monitoring room.
In order to facilitate the left-right sliding of the fixed bearing 1 in the coal mine air duct, the upper end and the lower end of the fixed bearing 1 are respectively connected with the upper sliding guide rail 8 and the lower sliding guide rail 6 through the upper sliding sleeve 7 and the lower sliding sleeve 5; and likewise, in order to facilitate the rotation of the circumferential flow objects 4 on the fixed bearing 1, the fixed bearing 1 is provided with the rotating shaft sleeves 3, and the circumferential flow objects 4 are connected with the fixed bearing 1 through the rotating shaft sleeves 3.
In order to further realize the multi-point measurement, any quantity of circumferential flow objects 4 can be installed on the fixed bearing 1; in accordance with the real situation, three circumferential flow objects 4 are appropriate; each circumferential flow object 4 is respectively connected with the fixed bearing 1 through one rotating shaft sleeve 3; each circumferential flow object 4 is also provided with one torque sensor 2; and the torque sensors 2 are electrically connected with the data processor 10.
The work flow of the system is described by taking installing three circumferential flow objects 4 as an example: 5 when the fluid in the ventilation duct flows by the three circumferential flow objects 4 in the axial direction of the fixed bearing 1, different acting forces are generated for the three circumferential flow objects 4; the three torque sensors 2 installed on different positions detect moments generated by different acting forces on the three circumferential 5 flow objects 4, the moments are converted into an electric signal which is transmitted to the data processor 10 through the data transmission wire 9 to be stored; then the fixed bearing 1 slides to a next measurement point through the upper sliding guide rail 8 and the lower sliding guide rail 6, and the next measurement is carried out according to the above steps until the measurement is conducted on a last measurement position; all stored data are 10 uniformly processed by the data processor 10; the flow of the fluid is obtained through a relationship between the acting force and the flow of the fluid; and the obtained flow is displayed on the display device 12.
The acting force generated by the flowing of the circumferential flow objects 4 at different positions in the axial direction of the fixed bearing 1 is measured through a 15 plurality of circumferential flow objects 4 in the axial direction of the fixed bearing 1 and the acting force generated by the flowing of the circumferential flow objects 4 at different positions in the horizontal direction in the coal mine air duct is measured through the motion of the circumferential flow objects 4 in the horizontal direction, thereby realizing the multi-point, effective and accurate measurement on the flow rate of the fluid at different 20 positions in the whole coal mine air duct. 6
Claims (4)
- CLAIMS What is claimed is:1. An online coal mine air duct vent flow monitoring system, comprising a data acquisition system and a data processing system, wherein the data acquisition system is electrically connected with the data processing system, the data processing system consists of a data processor (10) and a display device (12), the data processor (10) is electrically connected with the display device (12), and characterized in that the data acquisition system comprises a fixed bearing (1), torque sensors (2), circumferential flow objects (4), an upper sliding guide rail (8) and a lower sliding guide rail (6); and the upper end and the lower end of the fixed bearing (1) are respectively connected with the upper sliding guide rail (8) and the lower sliding guide rail (6) in a sliding manner, the circumferential flow objects (4) are arranged on the fixed bearing (1), the torque sensors (2) are arranged on the circumferential flow objects (4), and the torque sensors (2) are electrically connected with the data processor (10).
- 2. The online coal mine air duct vent flow monitoring system of claim 1, characterized in that the upper end and the lower end of the fixed bearing (1) are respectively connected with the upper sliding guide rail (8) and the lower sliding guide rail (6) through an upper sliding sleeve (7) and a lower sliding sleeve (5).
- 3. The online coal mine air duct vent flow monitoring system of claim 1, characterized in that the fixed bearing (1) is provided with a rotating shaft sleeve (3), and the circumferential flow objects (4) are connected with the fixed bearing (1) through rotating shaft sleeves (3).
- 4. The online coal mine air duct vent flow monitoring system of claim 3, characterized in that three circumferential flow objects (4) are provided, and each circumferential flow object (4) is respectively connected with the fixed bearing (1) through one rotating shaft sleeve (3).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013549.9A CN104614547A (en) | 2015-01-12 | 2015-01-12 | Online monitor system of coal mine air shaft ventilation flow rate |
| CN201510013549.9 | 2015-01-12 | ||
| PCT/CN2015/090205 WO2016112710A1 (en) | 2015-01-12 | 2015-09-22 | Coal mine air channel ventilation flow online monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2015377049A1 AU2015377049A1 (en) | 2016-12-08 |
| AU2015377049B2 true AU2015377049B2 (en) | 2017-01-05 |
Family
ID=53149085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2015377049A Ceased AU2015377049B2 (en) | 2015-01-12 | 2015-09-22 | Coal mine air channel ventilation flow online monitoring system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104614547A (en) |
| AU (1) | AU2015377049B2 (en) |
| WO (1) | WO2016112710A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614547A (en) * | 2015-01-12 | 2015-05-13 | 中国矿业大学 | Online monitor system of coal mine air shaft ventilation flow rate |
| CN109269059A (en) * | 2018-10-31 | 2019-01-25 | 中国建筑科学研究院有限公司 | Exhaust duct detector and testing method |
| CN110968829B (en) * | 2019-11-27 | 2023-04-14 | 重庆科技学院 | Ventilation resistance correction calculation method based on air pressure fluctuation phase difference processing |
| CN111307205B (en) * | 2020-02-10 | 2022-07-12 | 自然资源部第三海洋研究所 | Measuring device and measuring method for beach surface sediment movement |
| CN111998984B (en) * | 2020-08-14 | 2021-11-30 | 武汉市人防工程专用设备有限责任公司 | Air volume measuring device for civil air defense engineering |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203672906U (en) * | 2013-11-15 | 2014-06-25 | 化工部长沙设计研究院 | Mine pipeline wind speed measurement device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4329880A (en) * | 1979-05-10 | 1982-05-18 | Fischer & Porter Co. | Vortex-shedding flowmeter with torsional sensor mounted on torque tube |
| JPS57194024U (en) * | 1981-05-19 | 1982-12-09 | ||
| JP2935323B2 (en) * | 1993-02-26 | 1999-08-16 | 三菱自動車工業株式会社 | Vehicle crosswind detector |
| JP2978984B2 (en) * | 1995-05-12 | 1999-11-15 | 株式会社カイジョー | Ultrasonic tunnel wind speed measurement system |
| CN2294457Y (en) * | 1996-04-26 | 1998-10-14 | 中国矿业大学 | Lifting type air gauge |
| CN2497281Y (en) * | 2001-09-27 | 2002-06-26 | 泉州日新流量仪器仪表有限公司 | Torque-type impeller flowmeter |
| CN201654053U (en) * | 2010-03-19 | 2010-11-24 | 艾佩克斯科技(北京)有限公司 | Wind-speed online monitoring device of large-section air duct |
| CN202648713U (en) * | 2012-05-21 | 2013-01-02 | 常州市新港热电有限公司 | Large metering equipment of short duct flows |
| JP2014048120A (en) * | 2012-08-30 | 2014-03-17 | Takenaka Komuten Co Ltd | Wind velocity measuring device and wind velocity measuring method |
| CN203069616U (en) * | 2013-01-25 | 2013-07-17 | 马键 | Portable wind speed and wind direction measuring instrument |
| CN203241088U (en) * | 2013-05-24 | 2013-10-16 | 广东大唐国际潮州发电有限责任公司 | Flow measuring device in air flue |
| CN104614547A (en) * | 2015-01-12 | 2015-05-13 | 中国矿业大学 | Online monitor system of coal mine air shaft ventilation flow rate |
-
2015
- 2015-01-12 CN CN201510013549.9A patent/CN104614547A/en active Pending
- 2015-09-22 AU AU2015377049A patent/AU2015377049B2/en not_active Ceased
- 2015-09-22 WO PCT/CN2015/090205 patent/WO2016112710A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203672906U (en) * | 2013-11-15 | 2014-06-25 | 化工部长沙设计研究院 | Mine pipeline wind speed measurement device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104614547A (en) | 2015-05-13 |
| AU2015377049A1 (en) | 2016-12-08 |
| WO2016112710A1 (en) | 2016-07-21 |
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| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |