CN103792391A - Novel mining wind meter calibration device - Google Patents
Novel mining wind meter calibration device Download PDFInfo
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- CN103792391A CN103792391A CN201210433335.3A CN201210433335A CN103792391A CN 103792391 A CN103792391 A CN 103792391A CN 201210433335 A CN201210433335 A CN 201210433335A CN 103792391 A CN103792391 A CN 103792391A
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Abstract
The invention belongs to the technical field of coal mine safety engineering and relates to a mining wind meter calibration device. A main body of the device is a wind tunnel device; a wind tunnel body consists of a stable segment, a contraction segment, a test segment, an expansion segment and a transition segment; an alternating current asynchronous motor is employed to provide power; and an axial flow type ventilation mode is employed for ventilation. A frequency converter is used as a core controlling element of the mining wind meter calibration device, the frequency converter provides variable frequency for an electromotor, therefore continuous smoothness and adjustability of an air quantity of a blower fan are realized, and the frequency of the blower fan can randomly vary from 0 Hz to 50 Hz. By setting different wind speed such as V true 1, V true 2, V true 3 to V true n, different meters including V meter 1, V meter 2, V meter 3 to V meter n can be read. By using the n groups of corresponding values, meter speed is used as horizontal coordinates, true wind speed is used as vertical coordinates, a calibration curve of the wind meters can be drawn, and a calibration formula of the wind meters can be derived from the calibration curve. The device is characterized by convenience of control, smooth speed adjustment of the motor, small impact on the power grid, electric energy saved in operation processes, ideal control mode, and great economic and social benefit.
Description
Technical field
The verification that the present invention relates to ventilation and wind speed under coal mine is calculated, and belongs to mine safety field of engineering technology.
Background technology
In the evolution of Chinese mining technique, pit mining occupies very large proportion, due in the process of cutting coal, be attended by overflowing of gas, make the ventilation under coal mine become extremely important, how accurately measuring the wind speed of mine laneway and accurately calculating air quantity is a very important job, mining wind table is repeatedly surveyed after wind speed in down-hole, precise decreasing, adopts traditional means for correcting, and time-consuming, effort, power consumption are more.Be badly in need of wanting a kind of new type mining wind table means for correcting, to carry out as early as possible the correction of wind table.
Technical scheme
For above-mentioned situation, object of the present invention is just to provide a kind of novel mining wind table means for correcting, to carry out as early as possible the correction of wind table.Workpeople operated save time, save trouble, simple and easy to do.
New type mining wind table means for correcting adopts current advanced frequency conversion speed-adjusting system, can be very easy to regulate the rotating speed of asynchronous machine, can make motor speed in the time of 0～50 hertz, and stepless speed control, is down to minimum to motor, fan, mechanical hook-up impulsive force.This device is by ventilation blower (1), the slow circle (3) that shakes of frequency converter (2), diffuser (4), mounting flange (5), spare interface (6), wind table installation site (7), wind table is proofreaied and correct view window (8), baroport (9), thin contraction short (10), pitot tube seat (11), pitot tube view window (12), thick contraction section (13), stable section (14), hole body base (15), large table surface plate (16), measuring section (17), pitot tube seat (18) composition.
This is mining wind table means for correcting strong adaptability, stability is high, simple in structure, convenient for installation and maintenance, accurately and reliably, the advantages such as saves energy.
Embodiment
New type mining wind table means for correcting structure is made up of baroport (9), the pitot tube seat (11) of pibtot's tub erecting device, the wind tunnel body of frequency converter (2), asynchronous motor, axial flow blower, wind table erecting device (7), measurement static press device it.And wind tunnel body by stable section (14), thick contraction section (13), carefully shrink short (10), measuring section (17), diffuser (4) forms.
This device drags an asynchronous motor rotation by an AC converter (2), motor is coaxially connected with aerofoil fan, wind table to be corrected is arranged on the pitot tube seat (11) of wind table erecting device, its core control element adopts frequency converter, provide variable frequency to motor, thereby the continuously smooth that reaches fan delivery is adjustable, blower fan frequency can arbitrarily change between 0～50Hz, by setting different wind speed V true 1, V true 2, V true 3 ... the true n of V, read different V tables 1, V table 2, V table 3, V shows n, utilize said n group respective value, take indicated airspeed as horizontal ordinate, true wind speed is ordinate, draw calibration curve of anemometer, and according to the updating formula of calibration curve calculating derivation air-out table.Measure differential static pressure by the baroport (9) of static pressure measurement device, according to differential static pressure, converse speed true value, thereby reach the object of proofreading and correct wind table simultaneously.This device control is convenient, and electric machine speed regulation is level and smooth, electrical network is impacted less, and be in operation can saves energy, is optimal control mode, has larger economic and social benefit.
Accompanying drawing explanation
Aspect of the present invention described in literary composition and other features will be described by reference to the accompanying drawings in instructions, wherein: accompanying drawing is new type mining wind table means for correcting schematic diagram.
Claims (2)
1. a new type mining wind table means for correcting is by ventilation blower (1), the slow circle (3) that shakes of frequency converter (2), diffuser (4), mounting flange (5), spare interface (6), wind table installation site (7), wind table is proofreaied and correct view window (8), baroport (9), thin contraction short (10), pitot tube seat (11), pitot tube view window (12), thick contraction section (13), stable section (14), hole body base (15), large table surface plate (16), measuring section (17), pitot tube seat (18) composition.
Stable section as claimed in claim 1 (14), thick contraction section (13), carefully shrink short (10), measuring section (17), diffuser (4) composition wind tunnel body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210433335.3A CN103792391B (en) | 2012-11-05 | 2012-11-05 | Novel mining wind meter calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210433335.3A CN103792391B (en) | 2012-11-05 | 2012-11-05 | Novel mining wind meter calibration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103792391A true CN103792391A (en) | 2014-05-14 |
| CN103792391B CN103792391B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210433335.3A Active CN103792391B (en) | 2012-11-05 | 2012-11-05 | Novel mining wind meter calibration device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928568A (en) * | 2016-04-14 | 2016-09-07 | 长安益阳发电有限公司 | Novel method and system for measuring fan delivery |
| CN106226557A (en) * | 2016-07-20 | 2016-12-14 | 中南大学 | A kind of wind speed wind direction sensor field calibration system and method |
| CN107462743A (en) * | 2017-08-08 | 2017-12-12 | 北京卫星环境工程研究所 | Suitable for the wind speed calibration apparatus and scaling method under low pressure |
| TWI633292B (en) * | 2017-06-16 | 2018-08-21 | 宇田控制科技股份有限公司 | Wind tunnel installation |
| TWI667459B (en) * | 2017-06-16 | 2019-08-01 | 宇田控制科技股份有限公司 | Wind tunnel installation |
Citations (4)
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| CN202256376U (en) * | 2011-10-24 | 2012-05-30 | 重庆市计量质量检测研究院 | Assembly of medium and low-speed wind tunnel contraction section and flow measuring section |
| CN202304962U (en) * | 2011-10-24 | 2012-07-04 | 重庆市计量质量检测研究院 | Air tunnel type speed-area-method air flow calibration device |
| CN102590557A (en) * | 2012-03-22 | 2012-07-18 | 上海理工大学 | Variable-diameter negative pressure type breeze speed calibration device |
| CN202994826U (en) * | 2012-11-05 | 2013-06-12 | 河南理工大学 | Novel mining wind meter calibration device |
-
2012
- 2012-11-05 CN CN201210433335.3A patent/CN103792391B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202256376U (en) * | 2011-10-24 | 2012-05-30 | 重庆市计量质量检测研究院 | Assembly of medium and low-speed wind tunnel contraction section and flow measuring section |
| CN202304962U (en) * | 2011-10-24 | 2012-07-04 | 重庆市计量质量检测研究院 | Air tunnel type speed-area-method air flow calibration device |
| CN102590557A (en) * | 2012-03-22 | 2012-07-18 | 上海理工大学 | Variable-diameter negative pressure type breeze speed calibration device |
| CN202994826U (en) * | 2012-11-05 | 2013-06-12 | 河南理工大学 | Novel mining wind meter calibration device |
Non-Patent Citations (3)
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| 李钢等: "低速风洞收缩段设计加工与流动数值模拟", 《科技导报》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928568A (en) * | 2016-04-14 | 2016-09-07 | 长安益阳发电有限公司 | Novel method and system for measuring fan delivery |
| CN106226557A (en) * | 2016-07-20 | 2016-12-14 | 中南大学 | A kind of wind speed wind direction sensor field calibration system and method |
| CN106226557B (en) * | 2016-07-20 | 2020-11-24 | 中南大学 | Wind speed and direction sensor field calibration system and method |
| TWI633292B (en) * | 2017-06-16 | 2018-08-21 | 宇田控制科技股份有限公司 | Wind tunnel installation |
| TWI667459B (en) * | 2017-06-16 | 2019-08-01 | 宇田控制科技股份有限公司 | Wind tunnel installation |
| CN107462743A (en) * | 2017-08-08 | 2017-12-12 | 北京卫星环境工程研究所 | Suitable for the wind speed calibration apparatus and scaling method under low pressure |
| CN107462743B (en) * | 2017-08-08 | 2020-04-17 | 北京卫星环境工程研究所 | Wind speed calibration device and calibration method suitable for low air pressure |
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| Publication number | Publication date |
|---|---|
| CN103792391B (en) | 2017-02-22 |
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