WO2009039729A1 - Dispositif de chargement-pesée de charbon de grande précision - Google Patents

Dispositif de chargement-pesée de charbon de grande précision Download PDF

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Publication number
WO2009039729A1
WO2009039729A1 PCT/CN2008/071002 CN2008071002W WO2009039729A1 WO 2009039729 A1 WO2009039729 A1 WO 2009039729A1 CN 2008071002 W CN2008071002 W CN 2008071002W WO 2009039729 A1 WO2009039729 A1 WO 2009039729A1
Authority
WO
WIPO (PCT)
Prior art keywords
weighing
weight
coal feeder
conveyor belt
calibration
Prior art date
Application number
PCT/CN2008/071002
Other languages
English (en)
Chinese (zh)
Inventor
Da LI
Fusheng He
Xingguo Zhang
Deqiang Zhang
Original Assignee
Saimo Group Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saimo Group Co., Ltd. filed Critical Saimo Group Co., Ltd.
Publication of WO2009039729A1 publication Critical patent/WO2009039729A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/006—Special taring or checking devices therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/01—Testing or calibrating of weighing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/14—Devices for determining tare weight or for cancelling out the tare by zeroising, e.g. mechanically operated
    • G01G23/16—Devices for determining tare weight or for cancelling out the tare by zeroising, e.g. mechanically operated electrically or magnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F23K2203/104—Metering devices

Definitions

  • the utility model relates to a weighing coal feeder, in particular to a high-precision weighing coal feeder for coal feeding in a thermal power plant boiler.
  • the weighing coal feeder currently used adopts a weighing structure of a set of weighing scales and a weighing instrument; Although the weighing structure of the form can meet the requirements of weighing, once the weighing scale is faulty, the coal feeder cannot be weighed and the accuracy of weighing can only be calibrated by means of physical verification or simulated load verification.
  • the physical verification is limited by external conditions, and it is difficult to perform verification; the low confidence of the simulated load verification and the verification of both methods need to stop the material to be calibrated, so that the weighing of this structure is used.
  • the low accuracy of the weighing machine and the poor running reliability have become prominent problems. Utility model content
  • the purpose of the utility model is to provide a high-precision weighing coal feeder with compact structure, on-line automatic comparison, automatic calibration, high accuracy and high reliability.
  • the high-precision weighing coal feeder of the utility model comprises a feeding port, a conveyor belt conveyor, a coal feeder casing, a scraper cleaning conveyor, a discharge port, a speed measuring sensor and a weighing device, and the conveying belt conveyor
  • the gas valve and the air blowing pipe connected to the intake valve; the three sets of weighing devices are connected together by a signal cable to a centralized weighing instrument with a three-way weighing signal and a speed measuring signal input.
  • the weighing device adopts a full suspension structure composed of a load cell and a weighing roller, or a lever structure composed of an inner and outer frame and a heavy sensor; the weighing device is provided with a quick opening position. Inspection window;
  • the weight calibration device comprises a standard weight and a weight bracket and a lever and cam for controlling the lifting and lowering of the standard weight.
  • the utility model has two weighing devices arranged adjacent to each other in front of the feeding port of the conveyor belt conveyor, and the weighing area is lengthened, so that the metering precision is greatly improved, and a tare weight is arranged behind the feeding port.
  • the weighing device realizes online automatic zeroing and peeling.
  • the three groups of weighing devices are connected by signal cable to a centralized weighing instrument with multi-way weighing signal input and one-way speed signal input.
  • the centralized weighing instrument collects the data collected by the two sets of coal weighing devices in front of the feeding port of the conveyor belt, so as to obtain the coal feeding amount with higher measurement accuracy;
  • the device can perform automatic online comparison and automatic calibration, and the operation reliability is improved;
  • the centralized control weighing instrument collects data from the weighing device behind the feeding port of the conveyor belt, realizes automatic zero adjustment and taring, and improves the system. Weighing accuracy.
  • the weighing accuracy and operational reliability of the weighing machine are greatly improved, and it has wide practicality.
  • FIG. 1 is a structural view of a high-precision weighing coal feeder of the present invention.
  • FIG. 2 is an enlarged view of the structure of the coal weighing and weighing area of the high-precision weighing coal feeder of the present invention.
  • Fig. 3 is a cross-sectional view taken along line E-E of Fig. 1 of the high-precision weighing coal feeder of the present invention.
  • FIG. 4 is an enlarged view showing a structure of a high-precision weight calibration portion of the present invention.
  • the weighing coal feeder of the utility model mainly comprises a centralized weighing instrument 1, three sets of weighing devices 3, 7, 12, a conveyor belt conveyor 4, and a coal feeder casing 5,
  • the weight calibration device 8, the scraper cleaning conveyor 9 and the speed measuring sensor 11 are formed
  • the coal feeder casing 5 is cylindrical or polygonal
  • the scraper cleaning conveyor 9 is a chain drive, which is disposed in the coal feeder casing 5.
  • the conveyor belt conveyor 4 is disposed inside the coal feeder casing 5
  • the right side upper portion of the coal machine casing 5 is provided with a feed port 2
  • the left lower portion thereof is provided with a discharge port 10.
  • the three sets of weighing devices 3, 7, and 12 are identical, and the structure may be a full suspension direct force transmission structure or a lever type force transmission structure, and disposed under the upper belt of the endless belt of the conveyor belt conveyor 4, two of which The group weighing devices 3, 7 are arranged adjacent to the front of the feeding port 2 of the conveyor belt 4, and the other group of weighing devices 12 are arranged at the rear of the feeding port 2, and the sides of the coal feeder casing 5 are provided. There is an access window 6 for facilitating the inspection of the weighing devices 3, 7, 12, and the speed measuring sensor 11 is provided at the rear of the coal feeder housing 5.
  • the three sets of weighing devices 3, 7, and 12 are respectively provided with two load cells 14 and one weighing roller 15, and one ends of the two load cells 14 are respectively fixed on the longitudinal beam 16 of the conveyor belt, and the other ends are respectively fixed.
  • One end of the weigh roller 15 is provided, and the weighing device 3, 7, 12 is provided with a weight calibration device 8, and the weight calibration device 8 is provided with an intake valve 17 and a blow pipe 18 connected to the intake valve 17, which is compressed. The air blows off the dust on the standard weight 19 through the intake valve 17 and the blow pipe 18 to eliminate the influence of dust on the weight accuracy, as shown in FIG.
  • the weight calibration device 8 is disposed under the weighing device 3, 7 or 12, and is composed of a standard weight 19 and a weight bracket 13 and a lever 20 and a cam 21 for controlling the lifting and lowering of the standard weight 19, as shown in FIG. Show.
  • the cam 21 rotates and lowers the lever 20, and the standard weight 19 is placed in the V-shaped groove of the weight bracket 13, and the symmetric weight device 3, 7 or 12 is loaded for calibration; after the calibration is completed, the cam 21 is reversely rotated.
  • the lever 20 With the lever 20, the standard weight 19 is disengaged from the V-groove of the weight carrier 13, and the weight 19 is no longer loaded by the symmetrical weight device 3, 7 or 12.
  • the load cell 14 and the speed sensor 11 are connected to the centralized weighing instrument through a signal cable.
  • the centralized weighing instrument 1 can share the signal of one speed sensor.
  • the weighing device 3 and 7 respectively transmit the measured coal feeding amount data to the centralized weighing instrument 1 via the signal cable, and the centralized weighing instrument 1 combines the measured data.
  • the treatment is carried out to obtain a total amount of coal fed.
  • the length of the weighing section is lengthened to increase the metering accuracy of the entire scale.
  • the centralized weighing instrument 1 combines the measured data and processes the output signals of the load cells 14 in the 3 and 7 sets of weighing devices, respectively. If one of the load cell output signals of one of the weighing devices deviates too far from the other load cell output signals, the centralized weighing instrument 1 will judge that the group of weighing devices may malfunction, and only select another group.
  • the output of the heavy device is weighed to ensure the reliability of the system operation.
  • the weighing device 12 installed behind the feeding port only measures the belt tare weight, and sends the measured tare signal to the centralized weighing instrument 1 for processing, which can realize automatic on-line peeling of the coal feeder in the coal feeding weighing process.
  • the measurement accuracy of the system is improved; the weighing devices 3 and 7 installed in front of the lowering port can be automatically aligned online by means of mutual comparison. Firstly, the two weighing devices are separately weighed, the weighing results of the two weighing devices are equalized by calibration, and then a set of weighing devices are selected in the coal feeding process of the coal feeder, and the weighing device is applied on the weighing device.
  • Standard weight at this time the two sets of weighing devices get two sets of weighing data, a set of weighing devices applying standard weights get the combined data of the measured material weight and the weight of the weight, and the other group does not apply the standard.
  • a set of weighing devices for the code only obtains data for measuring the weight of the material. Since the two sets of weighing devices have been calibrated, the obtained results of measuring the weight of the materials are the same, the data obtained by the two sets of weighing devices are subtracted, and finally only the weighing data obtained by applying the standard weights is obtained, thereby completing the automatic calibration of the re-line.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)

Abstract

L'invention concerne un dispositif de chargement-pesée de charbon de grande précision, qui comprend un entonnoir d'entrée (2), des moyens de sortie (10), une virole d'alimentation (5), une bande transporteuse (4), une machine (9) d'extraction par raclage, une génératrice tachymétrique (11) et des moyens de pesée. Les moyens de pesée comprennent trois bascules (3, 7, 12) qui sont placées au-dessous de la bande transporteuse (4), deux bascules (3, 7) étant positionnées de façon adjacente en amont par rapport à l'entonnoir d'entrée, et une bascule (12) étant positionnée en aval par rapport à l'entonnoir d'entrée. Chaque bascule comporte des poids de contrôle (8), une vanne d'entrée (17) de gaz placée sur les poids de contrôle étant reliée à un chalumeau à gaz (18). Les trois bascules (3, 7, 12) et la génératrice tachymétrique (11) sont connectées à un dispositif de mesure intégré par des câbles de signal. Les moyens de pesée permettent d'effectuer un étalonnage et une comparaison automatiques et de déterminer le point zéro en continu en ligne.
PCT/CN2008/071002 2007-09-28 2008-05-16 Dispositif de chargement-pesée de charbon de grande précision WO2009039729A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720046461.8 2007-09-28
CNU2007200464618U CN201137953Y (zh) 2007-09-28 2007-09-28 高精度称重给煤机

Publications (1)

Publication Number Publication Date
WO2009039729A1 true WO2009039729A1 (fr) 2009-04-02

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Application Number Title Priority Date Filing Date
PCT/CN2008/071002 WO2009039729A1 (fr) 2007-09-28 2008-05-16 Dispositif de chargement-pesée de charbon de grande précision

Country Status (2)

Country Link
CN (1) CN201137953Y (fr)
WO (1) WO2009039729A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108871523A (zh) * 2018-08-01 2018-11-23 马鞍山钢铁股份有限公司 一种无人精确统计平煤量的装置、系统及方法
CN109455346A (zh) * 2018-12-28 2019-03-12 珠海市大航工业自动化技术有限公司 一种48斗目标配重计算方法及配重机
EP3872460A1 (fr) * 2020-02-28 2021-09-01 thyssenkrupp Industries India Pvt. Ltd. Système d'alimentation en carburant et procédé de commande d'un système d'alimentation en carburant ainsi que son utilisation

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CN101786553B (zh) * 2009-01-22 2012-07-04 山东博润工业技术有限公司 一种堆场散装物料输送、装载的方法及系统
CN101922960B (zh) * 2009-06-12 2012-04-25 铜陵市三爱思电子有限公司 用于对连续散料称重的皮带运输机计量方法及其装置
CN102322924B (zh) * 2011-08-31 2012-11-28 南京三埃工控股份有限公司 皮带秤物料速度检测和分段整体去皮方法
CN103204352B (zh) * 2013-03-25 2015-12-09 中国矿业大学 一种连续动态称重链带式给料机
CN103674145B (zh) * 2013-12-17 2016-05-04 上海交通大学 一种燃煤机组入炉燃煤质量流量的实时计量方法
CN104019880B (zh) * 2014-06-20 2016-01-27 浙江省计量科学研究院 一种基于增量砝码叠加的皮带秤远程校准系统
CN105417075A (zh) * 2015-11-27 2016-03-23 太仓圣广仁自动化设备有限公司 一种计量式给料机
CN112462597A (zh) * 2020-11-26 2021-03-09 淮浙煤电有限责任公司凤台发电分公司 一种采用sama图的给煤机煤量逻辑计算方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4353427A (en) * 1980-09-26 1982-10-12 Stock Equipment Company Weight-sensor calibration for gravimetric coal feeder
CN2303283Y (zh) * 1997-07-08 1999-01-06 梁跃武 双秤架皮带秤
CN1243574A (zh) * 1997-01-17 2000-02-02 K-特龙技术有限公司 连续称重计
CN2743305Y (zh) * 2004-10-08 2005-11-30 长沙超凡电脑系统有限公司 粉煤定量给料计量控制装置
CN2924494Y (zh) * 2006-07-15 2007-07-18 江苏赛摩集团有限公司 高精度称重给料机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4353427A (en) * 1980-09-26 1982-10-12 Stock Equipment Company Weight-sensor calibration for gravimetric coal feeder
CN1243574A (zh) * 1997-01-17 2000-02-02 K-特龙技术有限公司 连续称重计
CN2303283Y (zh) * 1997-07-08 1999-01-06 梁跃武 双秤架皮带秤
CN2743305Y (zh) * 2004-10-08 2005-11-30 长沙超凡电脑系统有限公司 粉煤定量给料计量控制装置
CN2924494Y (zh) * 2006-07-15 2007-07-18 江苏赛摩集团有限公司 高精度称重给料机

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108871523A (zh) * 2018-08-01 2018-11-23 马鞍山钢铁股份有限公司 一种无人精确统计平煤量的装置、系统及方法
CN108871523B (zh) * 2018-08-01 2024-04-05 马鞍山钢铁股份有限公司 一种无人精确统计平煤量的装置、系统及方法
CN109455346A (zh) * 2018-12-28 2019-03-12 珠海市大航工业自动化技术有限公司 一种48斗目标配重计算方法及配重机
EP3872460A1 (fr) * 2020-02-28 2021-09-01 thyssenkrupp Industries India Pvt. Ltd. Système d'alimentation en carburant et procédé de commande d'un système d'alimentation en carburant ainsi que son utilisation

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