CN100524118C - Intelligentize device used for fine material pipeline pneumatic conveying monitoring - Google Patents
Intelligentize device used for fine material pipeline pneumatic conveying monitoring Download PDFInfo
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- CN100524118C CN100524118C CNB2007101510340A CN200710151034A CN100524118C CN 100524118 C CN100524118 C CN 100524118C CN B2007101510340 A CNB2007101510340 A CN B2007101510340A CN 200710151034 A CN200710151034 A CN 200710151034A CN 100524118 C CN100524118 C CN 100524118C
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Abstract
The present invention provides an intelligent device used for monitoring a powder pipe pneumatic conveying. The present invention comprises an electrostatic sensor electrode array, an electronic circuit board and a casing. The electrostatic sensor electrode array and the electronic circuit board which are electrically connected are fixed on the casing which is shielded. The electronic circuit board consists of a signal processing unit, a data processing unit, a system control unit and a user interface unit. The device uses the electrostatic sensor electrode array which is embedded on the inner wall of a transmission pipeline in non-invading way to pick up the electrostatic signal sensed by the powder in the transmission pipeline and give the velocity and flow state of the powder in the transmission pipeline. The beneficial effects are that the device carries out online real time monitoring to the velocity and flow state of the powder; the flow of the powder is not interfered by the electrode; the present invention is of no abrasion problem and little operational maintenance. The present invention overcomes the measurement error caused by improper selection of electrode center distance and enlarges the measurement ranged of the velocity. The present invention is of accurate measurement result and stable and reliable device and can be used for the powder pneumatic conveying monitoring in power, cement, food and other industries.
Description
Technical field
The present invention relates to a kind of on-Line Monitor Device, refer more particularly to a kind of intelligent device that is used for powder pipeline strength conveying monitoring.
Background technology
The powder process of pneumatic transmission is a kind of Gas-solid Two-phase Flow process of complexity.This process is present in various commercial production flow processs in a large number.For example, a wind powder feeding of coal-fired thermal power factory, the wind pipe of cement is carried, the strength conveying of food factory's flour etc.The flowing velocity of powder in conveyance conduit is an important independent measurement parameter.If flow velocity is slow excessively, some powders can break away from fluidized state, and are deposited on duct bottom gradually, can cause pipeline obstruction when serious.Thereby powder speed must be enough greatly to guarantee that powder is in fluidized state.On the contrary,, can cause unnecessary powder breakage if the powder flow velocity is too fast, delivery line wearing and tearing aggravation, energy consumption increases.Therefore, powder speed is accurately measured production run control, transfer efficiency raising, production assurance, energy-saving and cost-reducing and flow metering are all had great importance.Simultaneously, in the course of conveying of powder,, handle, just may cause whole induction system paralysis, and then influence whole process of production as untimely discovery for problems such as the conveyance conduit obstruction that occurs, feeding interruptions.Therefore, development a kind of collect powder velocity survey and feed status detect for the on-Line Monitor Device of one very necessary.
The experimental provision that can be used for the powder fluid-velocity survey at present is a lot, as laser, ultrasonic and microwave Doppler knotmeter, and pitot tube, backing tube sillometer, ultrasonic, light, nuclear radiation, electric capacity correlation speed measurement instrument etc.But their most complex structures involve great expense or install and use difficulty or sensitivity is not high or require that longer straight length, air-flow cleaning are arranged, and use and to promote difficulty very big in industry spot at present.Electrostatic transducer is then simple relatively with structure, and cost is cheap relatively, and advantages such as sensitivity height have obtained significant progress in recent years.Yet existing electrostatic transducer sensitive electrode all adopts intrusive mood needle-like or non-intrusion type ring-shaped electrode.Though wherein needle electrode is easy for installation, it disturbs, and powder flows in the delivery pipe, and because serious wear, electrode needs periodic replacement.Though the electrodeless wear problem of ring-shaped electrode, when diameter of conveying pipe is big (dust diameter as cogeneration plant is generally about 500mm), cost is very high, the installation and maintenance difficulty.Therefore, the improvement of electrostatic transducer sensitive electrode is the key that can it be widely used in industry spot.On-line monitoring for powder strength feed status, adopt optical instrument can constitute a kind of non-intruding monitor system, but because powder deposition, local powder high concentration is gathered and powder may cause monitoring system to lose efficacy to the abrasion on optical sensor surface, so this method is difficult to obtain practical application.Other also can realize the prediction to the blocked state in the pipeline by Pressure Fluctuation Signal is carried out power spectral-density analysis and fuzzy analysis.But this algorithm complexity, calculated amount is big, poor reliability.In recent years, because the improving constantly and digital signal processing technology rapid development of embedded system hardware cost performance, go out the powder fluid-velocity survey of low cost, high reliability and the intellectualizing system of feed status on-line monitoring has become possibility based on the electrostatic transducer principle design.
Summary of the invention
The purpose of this invention is to provide a kind of pipeline strength that is used for and carry the device of measuring the powder flow velocity in real time and monitoring the powder flow state simultaneously, for the control of powder delivery system provides real time data, be suitable for the various needs that pipeline gas-solid two-phase or three phase flow process industrial department are arranged.
For realizing purpose of the present invention, the technical solution used in the present invention provides a kind of intelligent device that is used for powder pipeline strength conveying monitoring, this device is installed on the powder delivering pipe road, wherein: this device includes casing, include electrostatic transducer electrod-array and electronic circuit board by being electrically connected in the casing, described electronic circuit board includes signal Processing collecting unit, data processing unit, system control unit and the user interface section by being electrically connected; This device by non-intrusion type be embedded in the electrostatic transducer electrod-array of described conveying pipeline inner wall, pick up the electrostatic signal that powder is responded in the conveyance conduit, to signal amplification, filtering and carry out related operation or the spatial filtering analytical calculation, provide powder flow velocity and flow state in the pipeline through signal Processing collecting unit and data processing unit.
The invention has the beneficial effects as follows that this device carries out on-line real time monitoring simultaneously to powder flow velocity and flow state, electrode does not disturb powder to flow, and does not have wear problem, and the operation maintenance amount is few.Overcome electrode centers apart from selecting the improper measuring error that causes, enlarged the measurement device scope, avoided of the influence of electrode upstream and downstream installation direction measurement device.Can obtain accurate measurement result by suitable electrode pair and the algorithm of choice of dynamical, improve stability, the reliability of device, the system extension simple and flexible.All test results are all passed to secondary instrument demonstration or DCS, host computer demonstration, storage by user interface and are printed.Having adopted is that the electronic circuit and the novel sensor array of core organically combines with the digital signal processing chip, make this apparatus structure compactness, installation is simple, easy to use, efficient is high, cost is low.This device is applied widely, can be used for electric power, cement, the process monitoring that the powder strength is carried in the industrial sectors such as food.
Description of drawings
Fig. 1 is an apparatus structure synoptic diagram of the present invention;
Fig. 2 is the equidistant installation distribution plan of electrod-array of the present invention;
Fig. 3 is the A-A cross-sectional view of Fig. 2.
Among the figure:
1, electrode 2, signal Processing collecting unit 3, data processing unit
4, system control unit 5, user interface section 6, conveyance conduit
7, casing 8, insulator 9, binding post
10, electronic circuit board
Embodiment
Reaching example in conjunction with the accompanying drawings is illustrated the intelligent device that is used for powder pipeline strength conveying monitoring of the present invention.On behalf of the powder in the conveyance conduit, near the arrow among Fig. 1 the conduit axis flow to.
As shown in Figure 1, the intelligent device that is used for powder pipeline strength conveying monitoring of the present invention is installed in powder delivering pipe road 6, this device includes casing 7, include electrostatic transducer electrod-array 1 and electronic circuit board 10 by being electrically connected in the casing 7, described electronic circuit board 10 includes signal Processing collecting unit 2, data processing unit 3, system control unit 4 and the user interface section 5 by being electrically connected.This device by non-intrusion type be embedded in the described electrostatic transducer electrod-array 1 of described conveyance conduit 6 inwalls, pick up the electrostatic signal that powder is responded in the conveyance conduit, through signal Processing collecting unit 2 and 3 pairs of signal amplifications of data processing unit, filtering and carry out related operation or the spatial filtering analytical calculation, provide powder flow velocity and flow state in the pipeline.
It is that all electronic circuits of core all are integrated on the electronic circuit board 10 with the single-chip microcomputer that this device has adopted.These electronic circuits and the client software that operates on the single-chip microcomputer have been realized device repertoire module.Electrostatic transducer electrod-array 1 and electronic circuit board 10 are fixed in rectangle or the circular shielding instrument casing 7, are installed on the conveyance conduit 6 again.
Shown in Fig. 2,3, electrostatic transducer electrod-array 1 is curved to be installed on the conveyance conduit in the non-intruding mode.Electrostatic transducer electrode itself is made by metal material, is separated by insulator 8 fully between this electrode and between electrode and the conveyance conduit.This electrode inside surface also can cover one deck insulating material as required, avoid between the electrode or electrode and conveyance conduit between leakage current measurement is impacted.This electrode is connected with electronic circuit board 10 by binding post 9.
The signal of responding on 2 pairs of electrodes of signal Processing collecting unit amplifies, filtering, and finishes the A/D conversion, uses for other module.The enlargement factor of signal Processing collecting unit 2 can be under the control of system control unit 4, characteristic and the gain of flow condition automatic circuit according to tested powder, the power of dynamically adapting induced signal, the electrode pair that choice of dynamical is fit to is used for the powder speed calculation, to make full use of the precision of A/D converter on the single-chip microcomputer.
Data processing unit 3 calculates the amplitude of electrostatic induction signal earlier, and and system in preset threshold value compare, draw the powder feed status.If calm no powder or have only wind not have powder in the conveyance conduit, system control unit 4 is reported to the police to host computer or DCS by user interface section 5 immediately, and status information is provided.If pipeline transportation is normal, promptly there is wind that powder is arranged, 3 pairs of signals that collect of data processing unit compare computing, system control unit 4 is judged the upstream and downstream of electrostatic transducer electrod-array 1 automatically according to the operation result of data processing unit 3, and deposit system in, use when calculating for 3 pairs of powder flow velocitys of data processing unit.The automatic judgement of the upstream and downstream of electrostatic transducer electrod-array 1 can overcome the influence of this electrode upstream and downstream installation direction to measuring.
In calculating powder flow velocity process, data processing unit 3 at first uses cross-correlation method to calculate flow velocity.Because the process of pneumatic transmission of powder is extremely complicated, sometimes flowing of powder do not satisfied the desired signal characteristic of cross-correlation method, and correlation peak is not obvious maybe can not obtain the time with being stabilized, the data processing unit 3 then usage space filter method calculates the powder flow velocity.The application of spatial filtering method has enlarged the scope of application of device effectively.The feed status of powder and flow velocity all can be passed to secondary instrument demonstration or DCS, host computer demonstration, storage by user interface in real time and print.Simultaneously, system control unit 4 is provided with WatchDog Timer when the system hardware and software initialization, the term of execution that program being normal, WatchDog Timer is constantly reset, in case program fleet or single chip microcomputer halt, WatchDog Timer overflows overtime, single-chip microcomputer is produced reset, and guarantees total system safety.System control unit 4 also has self-diagnostic function, can each unit module ruuning situation of real time monitoring, and provide warning message during fault and failure code is provided, improved maintenance efficiency.
Claims (5)
1, a kind of intelligent device that is used for powder pipeline strength conveying monitoring, this device is installed on the powder delivering pipe road (6), it is characterized in that: this device includes casing (7), include electrostatic transducer electrod-array (1) and electronic circuit board (10) by being electrically connected in the casing (7), described electronic circuit board (10) includes signal Processing collecting unit (2), data processing unit (3), system control unit (4) and the user interface section (5) by being electrically connected; This device by non-intrusion type be embedded in the electrostatic transducer electrod-array (1) of described conveyance conduit (6) inwall, pick up the electrostatic signal that powder is responded in the conveyance conduit, to signal amplification, filtering and carry out related operation or the spatial filtering analytical calculation, provide powder flow velocity and flow state in the pipeline through signal Processing collecting unit (2) and data processing unit (3); Described electrostatic transducer electrod-array (1) is made up of a plurality of arc-shaped electrodes, arc-shaped electrode quantity is no less than three, the internal diameter of described arc-shaped electrode is consistent with the internal diameter of conveyance conduit (6), the internal diameter of described arc-shaped electrode is vertical with the throughput direction of powder in the conveyance conduit, the inside surface of arc-shaped electrode is concordant with the inwall of conveyance conduit, arc-shaped electrode length is the 1/16-1/8 of conveyance conduit girth, the width of arc-shaped electrode be 1mm to 10mm, the span of adjacent electrode centre distance (L) is that 10mm is to 100mm.
2, the intelligent device that is used for powder pipeline strength conveying monitoring according to claim 1 is characterized in that: be made as the distribution of equidistant distribution installation or unequal-interval between the described arc-shaped electrode and install.
3, the intelligent device that is used for powder pipeline strength conveying monitoring according to claim 1, it is characterized in that: described arc-shaped electrode inside surface covers one deck insulating material, and insulator (8) is housed between all arc-shaped electrodes and between arc-shaped electrode and the conveyance conduit.
4, the intelligent device that is used for powder pipeline strength conveying monitoring according to claim 1, it is characterized in that: sensor can be installed in vertically, the conveying pipeline section of level or other direction, at same tube section one or more electrostatic transducer electrod-arrays (1) is installed.
5, the intelligent device that is used for powder pipeline strength conveying monitoring according to claim 1 is characterized in that: described casing (7) is rectangle or circular shielding instrument casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101510340A CN100524118C (en) | 2007-12-14 | 2007-12-14 | Intelligentize device used for fine material pipeline pneumatic conveying monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101510340A CN100524118C (en) | 2007-12-14 | 2007-12-14 | Intelligentize device used for fine material pipeline pneumatic conveying monitoring |
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| CN101183250A CN101183250A (en) | 2008-05-21 |
| CN100524118C true CN100524118C (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007101510340A Expired - Fee Related CN100524118C (en) | 2007-12-14 | 2007-12-14 | Intelligentize device used for fine material pipeline pneumatic conveying monitoring |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900743B (en) * | 2010-05-28 | 2012-04-25 | 东南大学 | Linear electrostatic sensor array method for measuring particle speed and device thereof |
| CN102854332B (en) * | 2012-09-17 | 2014-05-21 | 华北电力大学 | Device and method for measuring rotational speed on basis of electrostatic sensor array and data fusion |
| CN103389117A (en) * | 2013-07-24 | 2013-11-13 | 华北电力大学 | On-line powder flowing measurement device and method based on array type static sensor |
| CN104316113B (en) * | 2014-11-20 | 2017-01-11 | 北京华清茵蓝科技有限公司 | Gas-solid multiphase flow online measurement device and method based on arc-shaped electrostatic electrode arrays |
| CN104614024B (en) * | 2015-02-28 | 2017-12-12 | 苏州华茂能源科技有限公司 | A kind of power station powder induction system pulverized coal flow electrostatic measurement characterizing method and device |
| CN105277804B (en) * | 2015-11-28 | 2019-01-22 | 沈阳华兴防爆器材有限公司 | A kind of conveyance conduit internal electrostatic on-line measuring device |
| CN106443055A (en) * | 2016-08-31 | 2017-02-22 | 西安艾贝尔科技发展有限公司 | Coil-type wind powder online measuring system and method |
| DE102017120799A1 (en) * | 2017-09-08 | 2019-03-14 | Vorwerk & Co. Interholding Gmbh | Suction nozzle for a vacuum cleaning device |
| WO2019080288A1 (en) * | 2017-10-25 | 2019-05-02 | 傅古月 | Solid flow testing apparatus |
| CN109211343B (en) * | 2018-09-14 | 2020-04-03 | 中国科学技术大学 | Dense-phase particle flow measuring instrument and measuring method under high-temperature strong magnetic field |
| DE102018126107A1 (en) * | 2018-10-19 | 2020-04-23 | Vorwerk & Co. Interholding Gmbh | Suction cleaning device with sensors for the detection of electrically charged particles |
| CN109823838A (en) * | 2019-01-22 | 2019-05-31 | 太原市海通自动化技术有限公司 | A kind of method and device carrying out the tachometric survey of coal dust pneumatic conveying using novel electrostatic sensor |
| CN111289600B (en) * | 2020-04-08 | 2021-04-30 | 华北电力大学 | Imaging device and method based on electrostatic sensor array |
| CN111781114A (en) * | 2020-07-09 | 2020-10-16 | 南京大得科技有限公司 | Device and method for detecting concentration and speed of gas-solid two-phase flow |
| CN114966097B (en) * | 2022-04-26 | 2023-06-20 | 东南大学 | System and method for measuring flue gas flow velocity field based on invasive electrostatic sensor array |
-
2007
- 2007-12-14 CN CNB2007101510340A patent/CN100524118C/en not_active Expired - Fee Related
Non-Patent Citations (6)
| Title |
|---|
| 气固两相流颗粒荷电及流动参数检测方法研究. 许传龙.中国优秀博士学位论文全文数据库工程科技Ⅰ辑，第4期. 2007 |
| 气固两相流颗粒荷电及流动参数检测方法研究. 许传龙.中国优秀博士学位论文全文数据库工程科技Ⅰ辑，第4期. 2007 * |
| 粉料气力输送状态在线监测装置研究. 张博等.仪器仪表学报，第28卷第11期. 2007 |
| 粉料气力输送状态在线监测装置研究. 张博等.仪器仪表学报，第28卷第11期. 2007 * |
| 静电传感器在煤粉质量流量测量中的研究与应用. 金喜平等.沈阳工业大学学报，第23卷第4期. 2001 |
| 静电传感器在煤粉质量流量测量中的研究与应用. 金喜平等.沈阳工业大学学报，第23卷第4期. 2001 * |
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