CN101606050B - 扭矩测量仪设备 - Google Patents
扭矩测量仪设备 Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
- H02P5/52—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another additionally providing control of relative angular displacement
- H02P5/56—Speed and position comparison between the motors by electrical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
- G01N33/343—Paper pulp
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Abstract
本发明涉及一种用于测定诸如液体或悬浮液的粘度、剪力或浓度的扭矩测量仪设备,所述设备包括两个弹性连接的同心轴,即一个外部空心轴(6)以及一个延伸穿过所述空心轴的内部仪器轴(5),在所述仪器轴上设有响应于测量介质(3)的部件(4)。根据本发明,所述轴(6,5)分别通过电机(9,10)来独立驱动,所述电机至少平均起来是持续地以相同的转速被驱动,与此同时,在不考虑所采用的速度和扭矩的情况下对所述两个轴之间的相位加以控制,其中,所述扭矩可以通过所述电机(10)驱动所述内部轴(5)的负载程度而测量,所述负载程度可转换成适合的输出信号。
Description
技术领域
本发明涉及一种用于扭矩测量仪或计量仪的设备,更具体地说,是涉及一种用于扭矩测量仪或计量仪的原理,所述设备用于例如浆液浓度、粘度、干度以及流变学特征的测量,所述设备根据力平衡原理来运行。
背景技术
用于浓度、剪力、粘度、干度、流变学特征等的旋转测量仪已经在加工工业中应用了很长一段时间。这些测量仪是在很好地建立了原理之后而设计的,在某些情况下这些原理要追溯到1960年代。基本原理是,一探测器在介质中旋转,而在探测器或传感器上所产生的如其通常所称的阻力矩得到测量并且转换成适合的输出信号。
更为普遍出现的设计是双轴系统原理,该双轴系统测量两个同心轴之间的角度差,其中,外部空心轴以恒定转速被驱动,而内部仪器轴(meter axle)弹性连接到空心轴上。该弹性连接还用作相对于加工介质的密封。将探测器固定地连接到位于介质中的一部分仪器轴上。该双轴原理消除了带有额外扭矩的问题,所述额外扭矩形成为来自仪器轴的密封件和支承件的摩擦,而所述摩擦可以影响到测量结果,这是因为这种摩擦可以产生变化。在控制设计中,所述方法是指运动平衡原理。利用这种系统的缺点是,温度、压力以及材料老化消极地影响到所述系统的特性,这是因为空心轴和仪器轴之间的弹性密封被允许在其零点位置之外运行。另一个受到消极影响的特性是所述系统的线性度。
然而,如果轴装置设有反馈系统,该反馈系统不管产生的扭矩的大小都使内部轴恢复到其零点位置,并且该反馈系统测量所需的力,那么所述干扰因素的影响在很大程度上被消除,并且结果将形成一个更为线性和长期稳定的测量系统。这种反馈系统应该说是根据力平衡原理来运行的。现今,将反馈应用于扭矩测量系统的最为普遍的方式是通过电磁反馈系统来实现,在该电磁反馈系统中,测量将仪器轴保持在其零点位置上所需的电流。
尽管反馈系统在扭矩测量的领域中并不是新颖的,而且自从60年代以来反馈系统也在持续地发展,但是其还是具有一些继续存在的顽固存留的缺点,而这些缺点还谈不上不可能用当前有效的技术来消除。电磁系统的使用经常导致一些剩磁,所述剩磁又导致测量误差。对此,最近几年已经做了可以考虑到的改进,但是其主题性质都是,利用有效的技术得到零剩磁是不可能的。而且,所述持续发展并没有显著降低测量仪的复杂性和价格,并且即使总重量有所降低,但是还是期望重量能进一步降低。线性度已经有所改进,但是这里还有一点是在使用中对铁的磁化曲线的依赖,这又导致些许非线性度。
在现今的加工工业中,对于大量生产的质量和数量上的有着很高需求,一点是在许多测量位置上完全依赖于具有高精确度的测量仪。遗憾的是,有时会选择不能满足这些需求的测量仪。对此,原因可能有很多,例如具有高精确度的测量仪的高价格、高重量以及庞大的复杂性。因此,如果测量仪能够继续改进,与此同时,增加精确度、减少重量以及在价格上如果没有降低那么至少也能保持相同水平,这样就会获利很多。
发明内容
本发明的一个目的是在于增加精确度和线性度。附加的目的还在于降低复杂性和重量,并且由此获得一种更高效、更紧凑并增加了用户方便性的系统。
现有的反馈系统中仅外部轴被驱动,并且连接到内部轴上的反馈系统依赖于外部轴的旋转,比较于现有的反馈系统,本发明提供有轴,可替换地,所述轴分别通过单独的电机以相同的转速而相互独立地被驱动,在某种程度上对所述轴之间的相位加以控制。优选的相位是与所述轴之间的零点位置对应的相位,也就是说,在该相位上,没有扭矩通过弹性密封件被传递,然而,还可以选择不同的相位,所选相位以受控的方式呈恒定的或变化的,并由此过滤信号。对于至少内部轴(即仪器轴)的驱动使用诸如永磁同步电机的一类电机,通过到达电机的电流和由电机送达的扭矩之间的关系来获得扭矩的直接测量。为了同样的驱动,这类电机还能够围绕空心轴设置,由此消除了对齿轮传动的需要,从而提供较低的重量。此外,该永磁同步电机类的电机消除剩磁的问题,并且改善了线性度,与此同时,转速能够容易适用于目前的应用,而且,所述电机提供了也是通过制动来控制转速和/或相位的性能。假设一物体,例如一个塑料袋粘到探测器上,所述电机还能够反转以能够使该物体掉落。通过本发明,高效和紧凑的设计还提供了在安装上的高效率和较低的成本。
附图说明
下面结合附图和优选实施例对本发明进行详细说明。
图1示出了扭矩测量仪的横截面示意图。
具体实施方式
图1中示出了扭矩测量仪1的横截面示意图,该扭矩测量仪安装在工艺管道2上,该工艺管道内,测量介质3流经探测器4。所述探测器4固定地连接到双轴系统中的仪器轴5上,该双轴系统除了具有仪器轴5以外,还包括空心轴6,该空心轴以密封件7的方式使扭距测量仪1与测量介质3密封隔开。设置在空心轴6和仪器轴5之间的弹性连接件8允许这两个轴5、6在介质3作用在探测器4上的扭距改变时具有相对角度的偏移。
这两个轴5、6分别通过单独的电机9、10而被独立驱动。电机9驱动外部轴,也就是空心轴6,而电机10驱动内部轴,也就是仪器轴5。对电机9或10中的一个加以控制以保持恒定的以及适合于实际应用的转速,而对电机9或10中的另一个加以控制以使轴5、6之间的相位总是保持相同并且对应于与轴5、6之间的零点位置,也就是说,没有扭距通过位于轴5、6之间的弹性密封件8传递的位置。
位于两个轴5、6之间的相位由传感器11和12来检测。一个实施方案的所示实施例要求,至少一个电机10以这样的方式构成,即,该电机示出了一个恒定的或至少在当前环境下已知的、扭矩和负载程度之间的关系,该负载程度是通过探测器4或电机10的动力消耗而作用在仪器轴5上的。出于特定目的使负载程度或动力消耗转换成适合的输出信号。
Claims (4)
1.一种用于测定液体或悬浮液的粘度、剪力或浓度的扭矩测量仪设备,所述设备包括两个弹性连接的同心轴,所述两个同心轴形成为一个外部空心轴(6)以及一个延伸穿过所述空心轴的内部仪器轴(5),在所述仪器轴上设有响应于测量介质(3)的部件(4),其特征在于,所述轴(6,5)分别通过电机(9,10)来独立驱动,所述电机(9,10)平均起来是持续地以相同的转速被驱动,与此同时,在不考虑所采用的速度和扭矩的情况下对所述两个轴之间的相位加以控制,其中,所述扭矩可以通过所述电机(10)驱动所述内部轴(5)的负载程度来测量,所述负载程度可转换成适合的输出信号。
2.根据权利要求1所述的设备,其特征在于,所述驱动内部轴(5)的电机(10)是可控的以保持所需恒定转速,并且所述驱动外部轴(6)的电机(9)是可控的以保持所需恒定相位。
3.根据权利要求1所述的设备,其特征在于,所述驱动外部轴(6)的电机(9)是可控的以保持所需恒定转速,并且所述驱动内部轴(5)的电机(10)是可控的以得到所需受控相位。
4.根据权利要求1、2或3所述的设备,其特征在于,所需的相位与所述弹性连接轴(5,6)之间无扭矩传递的位置对应。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0700085A SE530784C2 (sv) | 2007-01-16 | 2007-01-16 | Anordning vid en vridmomentmätare |
SE0700085-4 | 2007-01-16 | ||
SE07000854 | 2007-01-16 | ||
PCT/SE2007/051036 WO2008088265A1 (en) | 2007-01-16 | 2007-12-19 | Device at a torque meter |
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CN101606050A CN101606050A (zh) | 2009-12-16 |
CN101606050B true CN101606050B (zh) | 2011-09-28 |
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US (1) | US8171776B2 (zh) |
EP (1) | EP2108113B1 (zh) |
CN (1) | CN101606050B (zh) |
BR (1) | BRPI0720957B1 (zh) |
CA (1) | CA2675447C (zh) |
SE (1) | SE530784C2 (zh) |
WO (1) | WO2008088265A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11852545B2 (en) | 2018-01-24 | 2023-12-26 | Avl List Gmbh | Measuring device and method for determining a force and/or a torque on a torque-transmitting shaft |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US8850874B1 (en) * | 2012-01-05 | 2014-10-07 | Hongfeng Bi | In-line viscometer |
GB2510685B (en) * | 2012-12-12 | 2015-11-18 | Schlumberger Holdings | Measurement of fluid properties |
JP6623385B2 (ja) | 2015-06-08 | 2019-12-25 | 株式会社アタゴ | 粘度計 |
US9616711B1 (en) * | 2015-07-03 | 2017-04-11 | Jon Bills | Apparatus, system, and method for achieving magnetically harnessed locomotion of wheeled machines |
TWI628898B (zh) * | 2016-12-29 | 2018-07-01 | 財團法人工業技術研究院 | 交互作用力偵測裝置 |
AT521097B1 (de) * | 2018-03-26 | 2022-05-15 | Anton Paar Gmbh | Rotationsviskosimeter zur Messung der Viskosität von Stoffen |
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CN2191428Y (zh) * | 1994-02-08 | 1995-03-08 | 山东淄川电子工业设备厂 | 用于测量粘度的扭矩传感器 |
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FR2801382B1 (fr) * | 1999-11-23 | 2002-02-08 | Cuir | Viscosimetre rotatif a controle de couple de freinage |
GB0130021D0 (en) * | 2001-12-15 | 2002-02-06 | Renishaw Plc | Reaction balanced rotary drive mechanism |
FI119036B (fi) * | 2003-09-16 | 2008-06-30 | Kajaanin Prosessimittaukset Oy | Sakeuslähetin |
SE526246C2 (sv) * | 2003-12-09 | 2005-08-02 | Btg Pulp & Paper Sensors Ab | Anordning vid en vridmoments-eller skärkraftsmätare för bestämning av fiberkoncentration eller viskositet i massasuspensioner samt förfarande för återföring av mätaxeln i en vridmoments- eller skärkraftsmätare |
FI117109B (fi) * | 2003-12-15 | 2006-06-15 | Metso Automation Oy | Mittalaitteen tiiviste |
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- 2007-01-16 SE SE0700085A patent/SE530784C2/sv unknown
- 2007-12-19 BR BRPI0720957A patent/BRPI0720957B1/pt active IP Right Grant
- 2007-12-19 WO PCT/SE2007/051036 patent/WO2008088265A1/en active Application Filing
- 2007-12-19 EP EP07861131.6A patent/EP2108113B1/en active Active
- 2007-12-19 CN CN2007800493399A patent/CN101606050B/zh active Active
- 2007-12-19 CA CA2675447A patent/CA2675447C/en active Active
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5357785A (en) * | 1993-06-04 | 1994-10-25 | Radian Corporation | Method and device for determining rhenological properties |
CN2191428Y (zh) * | 1994-02-08 | 1995-03-08 | 山东淄川电子工业设备厂 | 用于测量粘度的扭矩传感器 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11852545B2 (en) | 2018-01-24 | 2023-12-26 | Avl List Gmbh | Measuring device and method for determining a force and/or a torque on a torque-transmitting shaft |
Also Published As
Publication number | Publication date |
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WO2008088265A1 (en) | 2008-07-24 |
SE530784C2 (sv) | 2008-09-09 |
BRPI0720957B1 (pt) | 2018-10-16 |
EP2108113A4 (en) | 2017-08-30 |
CA2675447C (en) | 2016-05-03 |
EP2108113A1 (en) | 2009-10-14 |
US20100162799A1 (en) | 2010-07-01 |
SE0700085L (sv) | 2008-07-17 |
CA2675447A1 (en) | 2008-07-24 |
BRPI0720957A2 (pt) | 2014-03-18 |
CN101606050A (zh) | 2009-12-16 |
EP2108113B1 (en) | 2018-04-11 |
US8171776B2 (en) | 2012-05-08 |
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