CN101033744B - Method and apparatus for pump protection without the use of traditional sensors - Google Patents

Method and apparatus for pump protection without the use of traditional sensors Download PDF

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Publication number
CN101033744B
CN101033744B CN 200710001543 CN200710001543A CN101033744B CN 101033744 B CN101033744 B CN 101033744B CN 200710001543 CN200710001543 CN 200710001543 CN 200710001543 A CN200710001543 A CN 200710001543A CN 101033744 B CN101033744 B CN 101033744B
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pump
speed
power
value
flow rate
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CN 200710001543
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Chinese (zh)
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CN101033744A (en
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安东尼·A·斯塔瓦莱
尼古拉斯·W·甘宗
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Itt制造企业公司
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Priority to US60/780,546 priority
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Priority claimed from CN201310071360.6A external-priority patent/CN103206388B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088Testing machines

Abstract

本发明提供了对离心泵的保护,同时区分危险操作条件(例如空转、最小流量和过载)和/或可能发生瞬态的条件(例如阀关闭的操作)并且一旦这些条件清除则取消保护。 The present invention provides protection for centrifugal pumps while distinguishing hazardous operating conditions (e.g. idle, the minimum flow and overload), and / or transient conditions may occur (e.g., valve closing operation) and once these conditions are cleared, unprotect. 所述方法利用计算的流量值,所述计算的流量值可以通过存储在评估设备中的校准的阀关闭的功率相对于速度的曲线和/或例如速度、转矩、功率和/或差分压力的各种泵和电机参数或者通过校准的流量曲线而数学地确定。 The method of using the flow rate value calculation, the value of the calculated flow rate may be closed by a valve calibrated stored in the evaluation device with respect to the power curve of velocity and / or such as speed, torque, power and / or differential pressure various pumps and motor parameters or mathematically determined by the calibration flow curve. 然后将计算的流量值与这些不利操作条件关联的流量阈值进行比较。 The calculated flow rate value is then compared with a threshold operating these adverse flow conditions associated.

Description

不使用传统传感器的泵保护方法和设备 Pump protection method and device does not use a conventional sensor

[0001] 相关申请的交叉引用 CROSS [0001] REFERENCE TO RELATED APPLICATIONS

[0002] 本专利申请要求2006年3月8日提交的标题为“Method for PumpProtectionWithout the Use of Traditional Sensors”(911-2.22-1/05G1002)的临时专利申请n0.60/780,529的优先权,并且还涉及2006年3月8日提交的标题为“Method ForDeterminingPump Flow Withou tTraditional Sensors”(911_2.24-1/05G1003)的临时专利申请n0.60//780,546。 [0002] This patent application claims the title March 8, 2006 entitled "Method for PumpProtectionWithout the Use of Traditional Sensors" (911-2.22-1 / 05G1002) Provisional Patent Application No. n0.60 / 780,529, and the title also relates to a March 8, 2006 entitled "Method ForDeterminingPump Flow withou tTraditional Sensors" (911_2.24-1 / 05G1003) of provisional Patent application n0.60 // 780,546. 这两个临时专利申请的全部内容通过参考引入本申请。 The entire contents of both provisional patent application is incorporated by reference herein.

技术领域 FIELD

[0003] 本发明涉及一种具有包含离心泵在内的泵的泵系统;并且尤其涉及一种不使用传统传感器的泵保护方法和设备。 [0003] The present invention relates to a pump comprising a centrifugal pump having a pump system including; and more particularly to a sensor, without using a conventional method and apparatus for pump protection.

背景技术 Background technique

[0004] 其他类似设备及其缺陷如下: [0004] Other equipment and similar defects as follows:

[0005] 美国专利N0.7,080,508公开了一种用于带机械损耗补偿的转矩控制的泵保护的方法和设备,其在此通过参考被引入,其中提供了利用转矩(或者功率)和速度的直接反馈以识别不期望的操作条件的控制逻辑并且提供了适当的操作响应以保护被驱动的设备(离心泵)不被损坏。 [0005] U.S. Patent No. N0.7,080,508 discloses a method and apparatus pump protection with mechanical loss compensation for the torque control, which is incorporated herein by reference, which is provided by the torque (or direct feedback power) and speed control logic to identify undesirable operating conditions and provides an appropriate response to operation of protective devices (centrifugal pump) is driven not damaged. 所述逻辑可以嵌入可变速度驱动或者可编程逻辑控制器(PLC)中。 The logic may be embedded in a variable speed drive or a programmable logic controller (PLC) in. 然而,这种技术可能限于具有从阀关闭的条件恒定上升功率曲线的泵。 However, this technique may be limited to have the valve closed condition of the constant power curve rising pump. 这些泵通常具有2000及以下的特定速度。 These pumps usually have a 2000 and below a certain speed. 这种方法需要手动输入功率损耗,功率损耗不能根据切割定律化为因子,以在宽的操作速度范围中保持精确度。 This method requires manual input power, power factor based on loss can not cut into law in order to maintain accuracy over a wide operating speed range.

[0006] 而且,下面公知的设备都没有包含用于区分不期望的操作条件以不使用传统的传感器和/或附加控制而对每个条件适当地控制泵的逻辑。 [0006] Moreover, known devices are not included for the following distinguishing undesirable operating conditions without using conventional sensors and / or additional appropriately controlling the pump control logic for each condition.

[0007] 美国专利N0.6,591,697公开了一种用于使用电机转矩测量确定泵流速的技术,其中电机转矩测量提供了一种描述转矩和速度相对于泵流速的关系的方法以及使用变频驱动(VFD)调整泵流量以调节离心泵的速度的能力。 [0007] U.S. Patent No. N0.6,591,697 discloses a method for using the motor torque measurement techniques to determine the flow rate of the pump, wherein the motor torque measurement provides a description of the relationship between torque and speed of the flow rate relative to the pump the method and the ability to use variable frequency drive (VFD) to adjust the pump speed to regulate the flow rate of the centrifugal pump. 然而,该设备并不包括提供对不期望的操作条件进行保护的逻辑。 However, this apparatus does not include logic for providing a desired operating conditions without protection. 所述设备利用专用的校准的速度对转矩的曲线以获得流量,从而在现场设置期间降低了灵活性。 Using the device-specific calibration of torque versus speed to obtain a flow rate, thereby reducing flexibility during field provided.

[0008] 授予给本专利申请的受让人的美国专利N0.6,464,464 B2公开了一种控制泵系统的方法和设备,该系统提供了一种控制和泵保护算法,其中使用了VFD以调节离心泵的流量、压力或者速度。 [0008] granted to the present patent application, the assignee of U.S. Patent N0.6,464,464 B2 discloses a method and apparatus for controlling a pump system, the system provides a control and pump protection algorithm which uses VFD centrifugal pump to regulate the flow, pressure or speed. 然而,该设备需要使用其他仪器,这增加了驱动系统的成本和复杂性,带来了潜在的故障隐患和不必要的成本。 However, this device requires the use of other instruments, which increases the cost and complexity of the drive system, and a potential failure risks and unnecessary costs.

[0009]另一种公知的设备,即 Load Controls 公司(Sturbridge, MA)的PMP 25 提供了一种泵保护,其通过对电机电流强度和速度的观测然后将得到的功率读数与各种操作条件(例如空转、阀关闭的条件)进行相关。 [0009] Another known device, i.e. Load Controls Company (Sturbridge, MA) is provided a pump PMP 25 is protected, by observing the reading power current intensity and the speed of the motor is then obtained with various operating conditions (e.g. idling, the valve closed condition) for correlation. (见专利n0.5,930,092和5,754,421)。 (See Patent n0.5,930,092 and 5,754,421). 然而,LoadControls的产品仅适合于恒定速度应用并且不能对各种条件提供不同的控制,其保护性设置仅能对电机执行“跳闸”(tripping)或者关断。 However, LoadControls product is suitable only for constant speed applications and does not provide control of a variety of different conditions, the protection provided on the motor can be performed only "trip" (tripping) on ​​or off. [0010] 美国专利N0.6,715,996 B2公开了一种操作离心泵的方法,提供了针对两个速度在阀关闭的条件下对泵功率进行采样的方法,确定寄生损耗并且计算其他频率处调整的功率以确定是否存在会导致电机故障的条件。 [0010] U.S. Patent No. N0.6,715,996 B2 discloses a method of operating a centrifugal pump, there is provided a method of sampling for both velocity of pump power at a closed valve condition, determining parasitic losses and other frequency calculation at power adjustment to determine whether the conditions can lead to motor failure exists. 然而,该技术仅保护零流量条件,并不包含检测最小流量条件(流量过低)或者过载条件(流量过高)的逻辑,并且也不区分无需求条件或空转条件。 However, this technique is only protected by a zero flow condition, a minimum flow condition does not include the detection (low flow) or an overload condition (flow rate too high) logic, and also does not distinguish between idle condition without conditions or requirements.

[0011] PCT WO 2005/064167 Al公开了一种定量测量技术,提供了使用校准的功率/差分压力曲线相对于流量相对于速度的方法。 [0011] PCT WO 2005/064167 Al discloses a quantitative measurement technique, there is provided the use of a calibrated power / differential pressure flow rate curve with respect to a method for speed. 校准的数据被存储并且与当前值比较以确定泵流量。 The calibration data is stored and the current value to determine the pump flow rate. 然而,该技术并不包含对不期望的操作条件提供保护的逻辑。 However, this technique does not include logic to provide protection against undesirable operating conditions. 它还利用存储在评估设备中的若干速度下的功率/△压力相对于流量的校准曲线。 It also power / △ pressure using a number stored in the speed evaluation device with respect to the flow of a calibration curve. 该方法需要专用数据以获得流量,从而在现场设置期间降低了灵活性。 This method requires to obtain specific data traffic to the site is provided during the reduced flexibility.

[0012] ABB Industry Oy (赫尔辛基,芬兰)的一种产品提供了变频驱动(VFD),其具有允许配置最大和最小转矩值的参数以防止负载驱动器(电机)在这些参数范围之外操作。 [0012] ABB Industry Oy (Helsinki, Finland) provides a product of a variable frequency drive (the VFD), which allows the configuration parameters having maximum and minimum torque values ​​to prevent the load driver (motor) operating outside of these parameters. 然而,ABB驱动并没有提供用于解释不同的操作条件的逻辑,也不允许缩放例如泵的离心负载或者在速度降低时也没有考虑小型泵中的机械损耗。 However, ABB drive does not provide logic for explaining different operating conditions, for example, do not allow scaling of centrifugal loads of the pump or is not considered a mechanical losses in small pumps at reduced speed.

[0013] 变频驱动系统可以配置为利用流量或者压力开关以识别不期望的操作条件。 [0013] The variable frequency drive system may be configured to utilize flow or pressure switches to identify undesired operating conditions. 然而,使用附加的过程开关增加了驱动系统的成本和复杂度,带来了潜在的故障点以及不必要的开销。 However, use of additional process switches increases the cost and complexity of the drive system, and a potential failure point, and unnecessary overhead.

[0014] 此外,在进行的与本发明相关的专利性检索中获得了如下专利。 [0014] Further, Patent retrieval is performed related to the present invention is obtained in the following patents. 其概述如下: Which are summarized as follows:

[0015] 美国公开n0.2004/0064292公开了一种保持最优级别所需的深井离心泵。 [0015] US Publication n0.2004 / 0064292 discloses a level required to maintain optimal well pump. 其中使用转矩和速度数据以计算泵的输入功率并且使用泵切割定律相对于额定速度调整功率,并且基于公开的泵数据确定额定流量。 Wherein a torque and speed data to calculate the input power of the pump and pump laws cut power to the rated speed adjustment, and it is determined based on the rated flow pump disclosed data. 其中使用切割定律数据和公开的性能以确定泵的压头、效率和最低所需的吸入压头。 Wherein the cutting Law and data disclosed to determine the performance of the pump head, efficiency and the minimum required suction head. 准确的计算方法并未提供。 Accurate calculation method does not provide. 其中仅显示了作为功率和压头的函数的流量,以及作为流量的函数的效率和吸入压头。 Which only shows the power as a function of flow rate and pressure head, and as a function of the flow rate and efficiency of the suction head. 所述方法简单的计算功率并且针对额定速度对其进行调整,并且基于切割定律从公开的性能数据确定流量。 The simple calculation for the power and the rated speed to be adjusted, and the flow rate is determined based on the performance data disclosed cutting Law. 尽管在泵工业中广泛使用,但是对泵性能的切割校正并非总是准确的。 Although widely used in the pump industry, but cutting the correction of the pump performance is not always accurate.

[0016] 尽管美国公开n0.2004/0064292公开了一种离心泵的控制系统,但是没有涉及调整或者校准方法。 [0016] Although U.S. Publication n0.2004 / 0064292 discloses a control system for a centrifugal pump, but does not involve adjustment or calibration method. 该方法需要使用实际的泵测试数据,带来引入较大误差的风险。 This method requires the use of actual pump test data, bringing greater risk of introducing errors. 授予本申请的受让人的美国专利N0.6,709,241公开了一种在变频驱动中需要四个传感器以及若干速度下的实际性能数据输入的技术。 U.S. Patent application granted N0.6,709,241 present assignee discloses a variable frequency drive technology requires four sensors, and actual performance data input in the plurality of speeds. 其使用流量传感器(外部流量计)以将实际流量与最小流量的阈值进行比较,但是不能区分最小流量条件、阀关闭的条件、空转条件或者过载条件。 Using a flow sensor (external flow meter) to a threshold value and the actual flow rate is compared to the minimum flow rate, it can not distinguish between a minimum flow condition, the valve closed condition, idle condition or overload condition.

[0017] 美国公开n0.2005/0123408公开了一种自校准过程,确定泵压增加一个增量的最低速度。 [0017] U.S. Publication n0.2005 / 0123408 discloses a self-calibration procedure to determine pump pressure increase in the minimum speed of one increment. 但是它并没有用于校准功率。 But it did not used to calibrate power. 空转保护是基于实际的当前读数与电流阈值的比较而进行的。 Slip protection based on a comparison of the actual current reading with a threshold current carried out. 阈值是基于一个操作速度。 Operation is based on a threshold speed.

[0018]美国专利 N0.4,468,219 和N0.4,795,314 以及美国公开n0.US2002/0141875 公开了一种蠕动泵或者正位移泵,其行为与关于转矩和速度的离心负载非常不同。 [0018] U.S. Patent Publication and US N0.4,468,219 and N0.4,795,314 n0.US2002 / 0141875 discloses a peristaltic pump or a positive displacement pump, which acts on the centrifugal load torque and speed very different.

[0019] 美国专利N0.6,783,328和美国公开n0.2002/0150476公开的技术需要传感器监视流量或者压力,以将设定点值与阈值进行比较。 [0019] U.S. Patent Publication U.S. N0.6,783,328 and technical n0.2002 / 0150476 discloses a flow or pressure sensors are required to monitor for the set point value is compared with a threshold value. 如果超过阈值,则降低速度以使得设定点低于阈值。 If the threshold is exceeded, so that the speed is reduced below a threshold set point. [0020] 美国专利N0.4,650, 633公开了一种方法,其基于在泵入口处检测流体温度和压力的传感器而限制泵的流量以防止气穴现象。 [0020] U.S. Patent No. N0.4,650, 633 discloses a method based on the detected fluid temperature and pressure sensors at the inlet of the pump to restrict flow of the pump to prevent cavitation.

[0021] 基于对以上所述的已知现有技术的理解和评价,本领域中需要一种能够为离心泵提供保护而不需要使用传统的传感器的技术,从而能够区分危险操作条件(例如空转、最小流量和过载)和/或可能发生瞬间状态的条件(例如阀关闭的操作),并且一旦这些条件清除则取消保护。 [0021] Based on an understanding and appreciation of the above prior art known, a need in the art to provide protection for a centrifugal pump without requiring the use of a conventional art sensors, it is possible to distinguish between hazardous operating conditions (e.g., idling , minimum flow and overload), and / or conditions (e.g., valve closing operation) may occur in the transient state, and once these conditions are cleared, unprotect.

发明内容 SUMMARY

[0022] 本发明提供了一种用于不使用传统的传感器进行泵保护的新的且独特的方法和设备,其通过计算流量值以与来自存储在评估设备中的现场校准的速度相对于阀关闭的功率的曲线的阈值流量、速度和功率(或者转矩)的电机信号以及例如额定泵速下的最优效率功率、阀关闭的功率和最优效率流量的基本公开泵性能数据进行比较。 [0022] The present invention provides a new and unique method and apparatus for using a non-conventional sensors to protect the pump, which is from a speed field calibration stored in the evaluation device with respect to the valve by calculating a flow rate value the threshold value of the flow curve of the power off, speed and power (or torque) of the motor power signal, and e.g. optimum efficiency at rated pump speed, the pump valve closes substantially disclosed optimal efficiency and power performance data traffic is compared. 用于与阈值流量值比较的计算的流量输入还可以通过各种技术得到,以使用泵切割定律数据和存储在评估设备中的各种速度下的流量校准曲线以及例如速度和功率(或者转矩)或者速度和功率/差分压力的泵和电机信号,计算流量。 For comparison with a threshold value of the flow rate calculated flow rate input may also be obtained by a variety of techniques, using a calibration curve of the pump flow rate at a cutting rate law and various data stored in the evaluation device and, for example speed and power (or torque ) or the speed and power / motor and pump differential pressure signal, the flow rate is calculated.

[0023] 控制泵操作的方法的特征在于将实际流量值与基于泵速校正的校正阈值流量值进行比较,从而确定泵操作条件。 [0023] The method of controlling operation of the pump wherein the flow rate value is compared with the actual pump speed based on the corrected flow rate correction threshold value, to determine the pump operating conditions. 基于所述比较,可以适应泵操作的反应。 Based on the comparison, the operation of the pump can be adapted to the reaction.

[0024] 对阈值流量值的校正是基于实际泵速和额定泵速之间的关系而进行的。 [0024] The correction of the flow rate threshold value is based on a relationship between the actual pump speed and pump speed rated carried out.

[0025] 校正的阈值流量值可以包括过载条件值(流量过大)、最小流量值(流量过小)或者它们的某些结合,并且所述方法可以包括将校正的过载条件阈值与实际过载流量值进行比较,从而确定泵的过载条件。 [0025] The corrected threshold flow value may comprise an overload condition values ​​(the amount of traffic), the minimum flow rate value (the flow rate is too small), or certain combinations thereof, and the method may comprise the corrected overload condition threshold and the actual overload traffic values ​​are compared to determine an overload condition of the pump.

[0026] 所述方法还可以包括将校正的最小流量阈值与实际最小流量值进行比较,从而确定或者是泵的正常流量条件或者可能是最小流量条件,这些步骤单独地或者共同地将校正的最小流量阈值与实际流量值进行比较,以及将实际功率值与当前泵速下的阀关闭的功率值进行比较,从而确定是否存在泵的最小流量条件或者空转条件。 [0026] The method may further comprise the corrected minimum flow rate threshold value and the actual minimum flow rate is compared to determine either the normal flow condition of the pump or may be a minimum flow condition, these steps are individually or collectively corrected minimum flow rate threshold value, and the actual power value is compared with the valve closed power value at the current pump speed and the actual flow rate value, to thereby determine a minimum flow condition, or idle condition exists pump. 实施例还可以包括对被抽吸的介质的比重进行了校正的实际功率值、阀关闭的功率值或者其组合。 Example embodiments may further include a medium specific gravity sucked actual power value is corrected, the valve closing power values ​​or combinations thereof.

[0027] 实际上,计算的流量值可以与这些不利的操作条件相关联的流量的阈值进行比较。 [0027] In fact, the calculated flow value may be compared to these threshold values ​​of the flow rate of adverse operating conditions associated. 速度、功率或者转矩的当前操作值可以与存储在评估设备中的现场校准的速度相对于阀关闭的功率的曲线以及例如额定泵速下的最优效率功率、阀关闭的功率和最优效率流量的基本公开泵性能数据进行比较,从而计算实际流量,或者可以与存储在评估设备中的流量相对于功率(或者转矩)或者流量相对于功率/差分压力的校准曲线进行比较,从而确定实际流量值。 Speed, power or torque value of the current operation speed can be stored in the evaluation device with respect to field calibration valve is closed and the power curve of power, for example, optimum efficiency at rated pump speed, the valve is closed and the optimum power efficiency the basic flow of the disclosed pump performance data are compared to calculate the actual flow rate, the flow rate or may be stored in the evaluation device with respect to the power (or torque) with respect to the power or flow / differential pressure calibration curves are compared to determine the actual flow value. 在安装包括了流量计的情况下,可以将其用作到泵保护算法的直接输入。 In the case where the installation includes a flow meter, it can be used as direct input to the pump protection algorithm. 逻辑可以被嵌入变频驱动或者可编程逻辑控制器。 Logic may be embedded in the variable frequency drive or a programmable logic controller.

[0028] 本发明还可以包括具有配置为实现上述特征的集合的模块的控制器,以及具有所述控制器的泵系统。 [0028] The present invention may further comprise a controller module configured to implement the above-described set of characteristics, and a pump system of the controller.

[0029] 在US2004/0064292中公开的一个实施例中,保护是基于来自驱动的测量的转矩和速度以计算功率并且将计算的功率与基于切割定律对速度校正的最大功率阈值进行比较。 [0029] disclosed in US2004 / 0064292 In one embodiment, the protection is based on measurements from torque and speed to calculate the drive power and the calculated power is compared with the speed correction based on the law of cutting maximum power threshold. 根据本发明的方法使用通过校正的阀关闭的功率相对于速度的曲线导出的无传感器的流量值而创建比可能仅使用切割定律更加准确的速度校正的功率相对于流量的曲线。 By using the valve closing power correction method according to the present invention with respect to flow speed curve derived values ​​of sensor-specific power created Law possible to use only more accurate cutting speed correction curve with respect to the flow rate. 然后将所述无传感器的流量值与最小流量和过载流量的阈值进行比较。 The sensorless flow rate value is then compared with a threshold value and the minimum flow of traffic overload. 并且还通过将校准的阀关闭的功率与当前操作速度和流体比重下的实际功率比较而检查空转。 And also by the calibrated valve is closed and the power at the power current actual operating speed and the comparison check idle hydrometer.

[0030] 实际上,本发明提供了对离心泵的保护,同时区分危险操作条件(例如空转、最小流量和过载)和/或可能发生瞬态的条件(例如阀关闭的操作)并且一旦这些条件清除则取消保护。 [0030] Indeed, the present invention provides protection for centrifugal pumps while distinguishing hazardous operating conditions (e.g. idle, the minimum flow and overload), and / or conditions (e.g., valve closing operation) and transients that may occur once these conditions Clear to cancel protection. 所述方法利用可以与这些不利操作条件关联的流量的阈值进行比较的计算的流量值。 The method utilizes a threshold may be associated with these adverse operating conditions of the flow rate of the flow comparison value calculated. 速度、功率或者转矩的当前操作值可以与存储在评估设备中的现场校准的速度相对于阀关闭的功率的曲线以及例如额定泵速下的最优效率功率、阀关闭的功率和最优效率流量的基本公开泵性能数据进行比较,从而计算流量,或者可以与存储在评估设备中的、以各种速度的流量相对于功率(或者转矩)或者流量相对于功率/差分压力的校准曲线进行比较。 Speed, power or torque value of the current operation speed can be stored in the evaluation device with respect to field calibration valve is closed and the power curve of power, for example, optimum efficiency at rated pump speed, the valve is closed and the optimum power efficiency the basic flow of the disclosed pump performance data are compared to calculate the flow rate, or may be with respect to the evaluation apparatus, the flow rate at various storage power (or torque) with respect to a calibration curve or power flow / differential pressure is Compare. 然后将计算的流量值与这些不利操作条件关联的流量的阈值进行比较。 The threshold value is then calculated flow rate values ​​associated with these adverse operating conditions of the flow rate is compared.

[0031] 最后,需要注意的是,本发明校准阀关闭的条件下的泵功率相对于速度并且基于校准曲线调整公开的性能以反映实际性能,从而比前述公布2004/0064292所公开的更加准确地确定操作速度下的功率相对于流量。 [0031] Finally, it is noted that the pump power in the present invention, calibration valve closed condition relative to the speed adjustment based on the calibration curve to reflect the actual performance of the disclosed properties, such as publication 2004/0064292 disclosed more accurately than the determining power at operating speed with respect to the flow.

附图说明 BRIEF DESCRIPTION

[0032] 图1为根据本发明的基本泵系统的方框图; [0032] FIG. 1 is a pump system in accordance with the basic block diagram of the present invention;

[0033] 图2为根据本发明的通过图1所示的控制器执行的基本步骤的流程图;以及 [0033] FIG. 2 is a controller according to the basic steps illustrated in FIG. 1 by the flow chart of the present invention; and

[0034] 图3为执行图2所示的基本步骤的图1所示的控制器的方框图。 The controller block diagram showing the basic steps of [0034] FIG. 3 is performed as shown in FIG. 2 in FIG. 1.

具体实施方式 Detailed ways

[0035] 图1示出了根据本发明的基本泵系统,一般地表示为2,其具有控制器4、电机6和泵8。 [0035] FIG. 1 shows the basic pump system according to the present invention, generally designated 2, having a controller 4, a motor 6 and a pump 8. 在操作中,根据本发明的控制器4,通过存储在评估设备中的现场校准的速度相对于阀关闭的功率的曲线、速度和功率(或者转矩)的电机信号以及例如所述额定泵速下的最优效率功率、阀关闭的功率和最优效率流量的基本公开泵性能数据,而确定计算的流量值。 In operation, the controller 4 according to the present invention, in the evaluation device by the speed of the storage field calibration curve with respect to the valve closing power, speed and power (or torque) of the motor signal and the nominal pump speed e.g. power at optimum efficiency, the valve is closed and the pump power substantially optimum efficiency disclosure performance data traffic, and determining the flow rate value is calculated. 所述用于与阈值流量值比较的计算的流量输入还可以通过各种技术得到,以使用泵切割定律数据和存储在评估设备或者模块(例如图3中的模块4a)中的各种速度下的流量校准曲线以及例如速度和功率(或者转矩)或者速度和功率/差分压力的泵和电机信号,计算流量。 Means for comparing with a threshold value of the flow rate calculated flow rate input may also be obtained by a variety of techniques, using a pump to cut the laws and data stored in the evaluation device or module in a variety of speeds (e.g., FIG. 3 modules 4a) flow rate and a calibration curve such as the speed and power (or torque) or power and speed / motor and pump differential pressure signal, the flow rate is calculated. 在安装包括流量计的情况下,其可以用作泵保护算法的直接输入。 In the installation comprises a flow meter which can be used as a direct input pump protection algorithm.

[0036] 特别地,控制器4通过模块4a(见图3)控制泵8的操作,模块4a配置为将实际流量值与基于泵8的速度校正的阈值流量值进行比较,从而确定泵操作条件。 [0036] Specifically, the controller 4 through the module 4a (see FIG. 3) to control operation of the pump, the module 8 is configured 4a actual flow value based on the speed of the pump 8 and the flow rate correction threshold value, to determine the pump operating conditions . 基于所述比较,可以适应泵8的操作,这包括在仅发出警告之前,响应于所述条件,使用用户可设置延迟,警告并且将速度降低到安全操作速度,报错并且关断电机或者自动复位错误并且重新启动泵和电机以检查条件是否清除。 Based on the comparison, can be adapted to operate pump 8, which includes a warning only until, in response to said conditions, the user can set the delay, a warning to a safe speed and reduce the operation speed, and cut off and given or automatic reset error and restart the pump and motor to check the condition has cleared. 如果条件清除,则取消该适应并且泵恢复正常操作。 If the condition is cleared, the adaptation is canceled and the pump resumes normal operation. 所述校正是基于符合如下所述的实际泵速和额定泵速之间的关系而进行的。 The correction is performed based on the relationship between the actual pump speed and the rated speed of the pump as described below in compliance.

[0037] 校正的阈值流量值可以包括过载条件值、最小流量值或者它们的某些组合,并且模块4a可以配置为将校正的过载条件阈值与实际过载流量值进行比较,从而确定泵8的过载条件。 [0037] The corrected threshold flow value may comprise an overload condition value, minimum flow rate, or some combination thereof, and the modules 4a may be configured to compare the corrected overload condition threshold and the actual overload flow rate value, to determine the pump overload 8 condition.

[0038] 模块4a还可以配置为将校正的最小流量阈值与实际最小流量值进行比较,从而确定或者是泵的正常流量条件或者可能是最小流量条件,这些步骤单独地或者共同地将校正的最小流量阈值与实际流量值进行比较,以及将实际功率值与当前泵速下的阀关闭的功率值进行比较,从而确定是否存在泵的最小流量条件或者空转条件。 [0038] module 4a may also be configured to correct the minimum flow rate threshold value and the actual minimum flow rate is compared to determine either the normal flow condition of the pump or may be a minimum flow condition, these steps are individually or collectively corrected minimum flow rate threshold value, and the actual power value is compared with the valve closed power value at the current pump speed and the actual flow rate value, to thereby determine a minimum flow condition, or idle condition exists pump. 实施例还可以包括对被抽吸的介质的比重进行了校正的实际功率值、阀关闭的功率值或者其组合。 Example embodiments may further include a medium specific gravity sucked actual power value is corrected, the valve closing power values ​​or combinations thereof.

[0039] 实际上,计算的流量值可以与这些不利的操作条件相关联的流量的阈值进行比较。 [0039] In fact, the calculated flow value may be compared to these threshold values ​​of the flow rate of adverse operating conditions associated. 速度、功率或者转矩的当前操作值可以与存储在评估设备中的现场校准的速度相对于阀关闭的功率的曲线以及例如额定泵速下的最优效率功率、阀关闭的功率和最优效率流量的基本公开泵性能数据进行比较,从而计算流量,或者可以与存储在评估设备或者模块4a中的、在各种速度处的流量相对于功率(或者转矩)或者流量相对于功率/差分压力的校准曲线进行比较,从而确定实际流量值。 Speed, power or torque value of the current operation speed can be stored in the evaluation device with respect to field calibration valve is closed and the power curve of power, for example, optimum efficiency at rated pump speed, the valve is closed and the optimum power efficiency the basic flow of the disclosed pump performance data are compared to calculate the flow rate, or may be stored in the evaluation device or module 4a, and the flow rate at various speeds with respect to the power (or torque) with respect to the power or flow / pressure differential comparing a calibration curve to determine the actual flow rate value. 在安装包括了流量计(未显示)的情况下,可以将其用作在控制器4中实现的泵保护算法的直接输入。 In the case where the installation includes a flow meter (not shown), which may be used as a direct input pump protection algorithm implemented in the controller 4. 控制逻辑可以被嵌入例如4a的控制器中,如图所示,其可以具有变频驱动(VFD)或者可编程逻辑控制器(PLC)的形式。 The control logic may be embedded in, for example, the controller 4a, as shown, which may have a variable frequency drive (VFD) or in the form of a programmable logic controller (PLC) is.

[0040] 电机6和泵8是本领域公知的,在此不再详述。 [0040] The pump motor 6 and 8 are known in the art, not described in detail here. 而且,本发明的范围并不限于当前已知或者将来开发的任何特定类型或种类的电机和泵。 Moreover, the scope of the present invention is not limited to any particular type or class of motor and pump currently known or developed in the future. 而且,本发明的范围还试图包括使用根据本发明的与控制离心泵、离心搅拌器、离心鼓风机或者离心压缩机的操作相关的技术。 Moreover, the scope of the present invention is further intended to include using the control and pump, a centrifugal stirrer, a centrifugal fan or a centrifugal compressor operation of the present invention related art.

[0041] 实际上,本发明包括并且可以实施为控制逻辑,该控制逻辑利用来自电机6和泵8的功率(或者转矩)和速度的直接反馈而计算流量值,从而识别不期望的操作条件,并且提供适当的操作响应以保护驱动的机器(离心泵)不受损坏。 [0041] Indeed, the present invention comprises a control logic and may be implemented, using the control logic from a power (or torque) feedback directly and speed of the motor 6 and the pump 8 and the flow rate value calculation, to identify undesirable operating conditions and provide an appropriate response to the operation of a machine (centrifugal pump) driven protected from damage. 然后将计算的流量值与这些不利操作条件关联的流量的阈值进行比较。 The threshold value is then calculated flow rate values ​​associated with these adverse operating conditions of the flow rate is compared. 可替换地,速度、功率或者转矩的当前操作值可以与存储在评估设备中的校准的流量相对于功率(或者转矩)或者功率/差分压力的曲线进行比较,从而确定实际流量值。 Alternatively, speed, power or torque current operation value of the flow rate can be stored in the evaluation of the calibration device relative to the power (or torque) or power curve / differential pressure is compared to determine the actual flow rate value. 可替换地,在安装包括了流量计的情况下,可以将其用作到泵保护算法的直接输入。 Alternatively, in the case where the installation includes a flow meter, it can be used as direct input to the pump protection algorithm.

[0042] 图2:控制逻辑 [0042] FIG. 2: control logic

[0043] 图2以示例的方式示出了一般地表示为10的流程图,具有泵保护算法的基本步骤12-18或者可以通过根据本发明的控制器4实现的控制逻辑。 [0043] Figure 2 shows by way of example a flowchart showing a general 10, substantially having a pump protection algorithm steps 12-18 or may be implemented by the control logic of the controller according to the present invention 4. 所述泵保护算法或者控制逻辑可以嵌入在变频驱动或者可编程逻辑控制器,如同在图1中参考控制器4所示。 The pump protection algorithm or control logic may be embedded in a variable frequency drive or a programmable logic controller, as shown in FIG. 1 refer to the controller 4. 很多当前的VFD系统创建所驱动的电机的准确的数学模型以提供对速度和转矩的精确控制。 Many current VFD system creates an accurate mathematical model of the drive motor to provide precise control of speed and torque. 给定了此信息,根据本发明的保护逻辑可以如下实现: Given this information, according to the logic of the present invention the protection can be achieved:

[0044] 输入可以包括: [0044] The input may include:

[0045]-最小速度 [0045] - minimum speed

[0046]-最大速度 [0046] - the maximum speed

[0047]-额定速度 [0047] - rated speed

[0048]-额定速度下的最小流量阈值(流量过低) [0048] - the minimum flow threshold (low flow rate) at rated speed

[0049]-额定速度下的过载流量阈值(流量过大) [0049] - traffic overload threshold at rated speed (amount of traffic)

[0050] -Kdk—与当前操作速度下的阀关闭的功率相乘的系数,可以用于确定空转条件。 [0050] -Kdk- power multiplied by the coefficient valve is closed at the current operating speed, may be used to determine the idling condition.

[0051]-保护延迟一在宣布保护条件之前的以秒为单位的时间延迟。 [0051] - the protection of a delay in announcing the time in seconds of delay before protection conditions.

[0052] 基于当前操作速度,最小流量和过载流量阈值如下校正: [0052] Based on the current operating speed, flow rate and minimum flow rate threshold overload corrected as follows:

[0053] _Qiin_coe — QminX (Nact/Neated) [0053] _Qiin_coe - QminX (Nact / Neated)

[0054] _Qro—cor — QrqX (Nact/Neated)[0055]其中: [0054] _Qro-cor - QrqX (Nact / Neated) [0055] wherein:

[0056] Qmin _为速度校正的最小流量 [0056] Qmin _ is the minimum flow rate correction

[0057] 速度校正的过载流量 [0057] The flow speed correction overload

[0058] Nact为实际速度 [0058] Nact actual speed

[0059] Neated为额定速度 [0059] Neated rated speed

[0060] 一旦宣布了某个条件,则逻辑依赖于设置提供如下动作: [0060] Once a condition is declared, dependent on the logic arrangement provides the following actions:

[0061] 过载条件13 [0061] overload condition 13

[0062] 一如果实际流量大于速度校正的过载流量设置,则宣布过载保护条件13。 [0062] If the actual flow is greater than a speed correction flow setting overload, the overload protection condition is declared 13.

[0063] 一驱动的反应是警告用户,而不采取进一步动作。 [0063] The reaction is driven by an alert user, without taking further action. 在宣布过载条件之前可以设置保护延迟周期。 Before declaring an overload condition can be set to protect the delay period. 如果过载条件清除,则过载警告将消除。 If the overload condition is cleared, the overload warning will be eliminated.

[0064] 最小流量条件17 [0064] The minimum flow condition 17

[0065] 如果实际流量低于速度校正的最小流量设置并且Pact大于KdkXPS()_N,则宣布最小流量保护条件17, [0065] If the actual flow is below the minimum flow rate is greater than the correction set and Pact KdkXPS () _ N, protection condition is declared minimum flow 17,

[0066]其中: [0066] wherein:

[0067] -Kdk为空转系数, [0067] -Kdk coefficient is idling,

[0068] -Pact为对比重=I校正的实际功率,以及 [0068] -Pact corrected for the proportion of actual power = I, and

[0069] -Pso n是对比重=I校正的当前速度下的阀关闭的功率。 [0069] -Pso n is the valve under gravity = I off current speed corrected power. PS()_N是通过存储在评估设备中的阀关闭的功率相对于速度的曲线进行插值得到的。 PS () _ N valve is closed by the power stored in the evaluation device with respect to the curve obtained by interpolating the speed. 可替换地,PS()_N可以通过切割定律如下计算:PS()_N = Ps。 Alternatively, PS () _ N can be calculated by cutting Law: PS () _ N = Ps. (额定速度)X (N实际速度/N额定速度)KS°,其中KSO通常等于 (Rated speed) X (N actual speed / N the rated speed) KS °, which is generally equal to KSO

3.0。 3.0. 对于小马力的泵,可以对Kdk进行校正以补偿在使用切割计算方法情况下的PS()_N的不准确性。 For small horsepower pump, can be corrected to compensate for PS in the case where cutting calculation method () _ N inaccuracy of Kdk. 然后KDKcorr = KdeX (N实际速度/N额定速度)°_5并且图2中的公式变成Pact< KDKcorr X PS0_N。 Then KDKcorr = KdeX (N actual speed / N the rated speed) ° _5 and in FIG. 2 becomes Equation Pact <KDKcorr X PS0_N.

[0070] 一驱动的反应可以设置为警告用户而不采取进一步动作,警告用户并且降低到安全的最低操作速度(报警和控制)或者报错并且关断单元。 [0070] The reaction may be driven by a set to warn the user takes no further action, and alert the user to a minimum safe operating speed (alarm and control) and the off-cell or error. 在宣布最小流量条件之前可以设置保护延迟周期。 Before announcing the minimum flow conditions can be set to protect the delay period. 驱动还可以设置为自动复位报警和控制条件或者报错以检查系统瞬态条件是否清除。 The drive can also be set to automatically reset the alarm and control condition or to check the error condition is cleared the system transient. 复位的次数和复位之间的时间可以由用户调整。 The time between the reset and the reset times can be adjusted by the user. 一旦复位次数用完,如果条件没有清除,则单元保持关断,直到用户手动重新启动。 Once the number of resets exhausted, if the condition has not cleared, the unit remains turned off until the user manually restarted.

[0071] 空转条件18 [0071] 18 idle condition

[0072] 如果Pact小于KdkXPS()_N,则宣布空转保护条件18。 [0072] If less than Pact KdkXPS () _ N, slip protection condition is declared 18.

[0073] —驱动的反应可以设置为警告用户而不采取进一步动作,或者报错并且关断单元。 [0073] - The reaction may be driven to warn the user takes no further action, and turns off the unit or error. 在宣布空转条件之前可以设置保护延迟周期。 Before declaring idle condition can be set to protect the delay period. 驱动不能被设置为自动复位报错条件。 Driver can not be set to automatically reset error condition. 一旦单元报错,则保持关断,直到用户手动重新启动。 Once the given cell is maintained off until the user manually restarted.

[0074] 应当注意,本发明的范围包括由用户选择性地禁用的所有功能。 [0074] It should be noted that the scope of the present invention include all functions performed by the user to selectively disabled.

[0075] 图3:控制器4 [0075] Figure 3: Controller 4

[0076] 图3示出了控制器4的基本模块4a和4b。 [0076] FIG. 3 illustrates a base module 4, the controller 4a and 4b. 用于控制泵的许多不同类型和种类的控制器和控制模块是本领域公知的。 Many different types and kinds of controllers and a control module for the pump are known in the art. 基于对这些公知控制器和控制模块的理解,本领域技术人员可以实现例如4a的控制模块并且对其进行配置以执行与在此描述内容一致的功能,包括将实际流量值与基于泵速校正的校正阈值流量值进行比较从而确定泵操作条件,以及实现本发明的其他基本步骤,例如图2所示和以上所述的根据本发明的步骤。 Based on the understanding of these well-known controllers and control module, one skilled in the art may be implemented, for example, the control module 4a and be configured to perform the functions described herein consistent with the content, including the actual flow value based on the corrected pump speed flow rate correction threshold value comparison step according to the present invention to determine pump operating conditions, and to achieve other basic steps of the present invention, such as described above and shown in Fig. 以示例的方式,可以使用硬件、软件、固件或者其组合实现模块4a的功能,尽管本发明的范围并不限于其任何特定实施例。 By way of example, be implemented using hardware, software, firmware, or a combination thereof functional module 4a, although the scope of the present invention is not limited to any particular embodiment thereof. 在典型的软件实现中,所述模块可以为一个或者多个基于微处理器的体系结构,具有微处理器、随机访问存储器(RAM)、只读存储器(ROM)、输入/输出设备和连接这些组件的控制、数据以及地址总线。 In a typical software implementation, the module may be one or more microprocessor-based architectures having a microprocessor, a random access memory (RAM), a read only memory (ROM), input / output devices and connect these control assembly, and an address data bus. 本领域技术人员能够对所述基于微处理器的实现进行编程以执行在此描述的功能而不需要进行过多实验。 Those skilled in the art can be programmed to perform the functions described herein without undue experimentation based on the realization microprocessor. 本发明的范围并不限于任何使用已知或者将来开发的技术的特定实现。 The scope of the present invention is not limited to any particular implementation using technology known or developed in the future of.

[0077] 控制器具有本领域公知的其他控制器模块4b,其并不作为本发明的一部分,并且在此不再详细描述。 [0077] Other controller module controller known in the art having the present 4b, which is not part of the present invention, and are not described in detail herein.

[0078] 其他可能的应用 [0078] Other possible applications

[0079] 1.泵负荷监视器:泵负荷监视器依赖于对泵功率曲线的准确建模以识别最小流量和关断条件。 [0079] 1. Pump Load Monitor: monitor pump load depends on accurate modeling to identify the pump power curve and the minimum flow shutdown condition. 尽管多数负荷监视器仅监视一个速度下的功率,但所述逻辑可以支持对可变速度操作的更加准确的负荷监视器。 Although most of the load power monitor monitors only at one speed, but the logic can be supported more accurately monitor the load on the variable speed operation.

[0080] 2.泵保护算法:无传感器的流量测量能够给出操作条件的可靠的指示:过载条件(流量过大),低于最小泵流量的操作(流量过低)或者针对排出阀关闭的操作。 Indicating no reliable flow measurement sensors can give operating conditions:: [0080] 2. Pump protection algorithm overload condition (the amount of traffic), operating below the minimum pump flow rate (low flow) or for closing the outlet valve operating.

[0081] 发明的范围 [0081] scope of the invention

[0082] 应当理解,除非特别说明,在此参考特定实施例描述的任何特征、特性、替换实施例或者修改也可以应用、使用或者包含在任何其他在此描述的实施例中。 [0082] It should be appreciated that, unless otherwise indicated herein described with reference to specific embodiments of any of the features, characteristics, modifications or alternative embodiments may also be applied, used, or included in any other embodiments described herein. 并且,附图并非按比例绘制。 Further, the drawings are not necessarily drawn to scale.

[0083] 尽管参考示例性实施例描述和说明了本发明,但是可以对其做出各种前述和其他的添加和省略,而并不背离本发明的精神和范围。 [0083] Although described with reference to exemplary embodiments and the present invention is described, but may make various foregoing and other additions and omissions, without departing from the spirit and scope of the invention.

Claims (63)

1.一种用于控制包括离心泵、离心搅拌机、离心鼓风机或者离心压缩机的泵的操作的方法,包括: 从相对于阀关闭的功率的速度的校准曲线,导出不使用传感器而确定的实际流量值; 将实际流量值与基于泵速校正的、并且涉及所述泵的不期望的操作条件的校正阈值流量值进行比较,从而确定泵操作条件;以及基于所述导出的实际流量值与校正阈值流量之间的比较,控制所述泵。 1. A method for controlling a pump comprising a centrifugal pump, a centrifugal stirrer, a centrifugal fan or a centrifugal compressor operation, comprising: from the calibration curve of power with respect to the valve closing speed, without using a sensor and deriving determined actual flow rate value; actual flow rate value is compared with a threshold based on the flow correction value corrected pump speed, the pump and to the undesired operating conditions, to determine the pump operating condition; and an actual flow value based on the derived correction comparison between the threshold flow rate, the pump control.
2.根据权利要求1所述的方法,其中所述方法进一步包括基于所述比较适应所述泵的操作,这包括在仅发出警告之前,响应于所述泵操作条件,使用用户可设置延迟,警告并且将速度降低到安全操作速度,报错并且关断连接到所述泵的电机或者自动复位错误并且重新启动所述泵和电机以检查所述泵操作条件是否清除,并且如果所述泵操作条件清除,则取消所述适应并且所述泵恢复正常操作。 2. The method according to claim 1, wherein the method further comprises comparing, based on the adaptation of the operation of the pump, which includes a warning only until, in response to operating conditions of the pump, the user can set the use of delays, warning and reduce the speed to a safe operating speed, and being given off a motor connected to the pump or automatically resets the error and restart the machine to check the pump and the pump operating condition is cleared and if the operating conditions of the pump Clear, cancel the adaptation and the pump to resume normal operation.
3.根据权利要求1所述的方法,其中所述校正是基于实际泵速和额定泵速之间的关系而进行的。 3. The method according to claim 1, wherein said correction is performed based on a relationship between the actual pump speed and pump speed rated carried out.
4.根据权利要求1所述的方法,其中所述校正的阈值流量值包括过载条件值、最小流量值或者它们的结合。 4. The method according to claim 1, wherein said correction value comprises a threshold flow rate value of the overload condition, the minimum flow rate value, or a combination thereof.
5.根据权利要求1所述的方法,其中所述方法包括将过载条件值与实际过载流量值进行比较,从而确定所述泵的过载条件。 5. The method according to claim 1, wherein said method comprises the overload condition and the actual traffic overload value, to determine an overload condition of the pump.
6.根据权利要求1所述的方法,其中所述方法包括将校正的最小流量值与实际最小流量值进行比较,从而确定所述泵的正常流量条件或者最小流量条件。 6. The method according to claim 1, wherein said method comprises the minimum flow rate correction value and the actual value is compared to the minimum flow rate, thereby determining the normal flow condition of the pump or minimum flow conditions.
7.根据权利要求1所述的方法,其中所述方法进一步包括将校正的最小阈值流量值与实际流量值进行比较,以及还将实际功率值与当前泵速下的阀关闭的功率值进行比较,从而确定所述泵的最小流量条件或者空转条件。 7. The method according to claim 1, wherein said method further comprises a correction minimum threshold flow rate value, and also actual power value and the actual flow rate value is compared with the current power value of the valve closing speed of the pump to determine the pump minimum flow condition, or idle condition.
8.根据权利要求1所述的方法,其中所述方法进一步包括将校正的最小阈值流量值与实际流量值进行比较,以及还将实际功率值与当前泵速下的阀关闭的功率值进行比较,从而确定所述泵的最小流量条件或者空转条件,其中所述阀关闭的功率值是通过对存储在存储设备中的校准的功率相对于速度的曲线进行插值得到的。 8. The method according to claim 1, wherein said method further comprises a correction minimum threshold flow rate value, and also actual power value and the actual flow rate value is compared with the current power value of the valve closing speed of the pump to determine the pump minimum flow condition, or idle condition, wherein said valve closing power value is obtained by interpolation of the calibration stored in the power storage device with respect to the speed curve.
9.根据权利要求1所述的方法,其中如果Pact小于KdkXPS()_N,则宣布空转条件,其中Pact为对比重=I校正的实际功率,Kdk为与当前操作速度下的阀关闭的功率相乘的系数,并且PS()_N为对比重=I校正的当前速度下的阀关闭的功率。 9. The method according to claim 1, wherein if less than Pact KdkXPS () _ N, is declared idle conditions, wherein Pact for the proportion of the actual power corrected = I, the KDK is the valve closing speed of the current operating phase of the power multiplication factor, and PS () _ N = is the specific gravity of the valve closing power at I speed correction current.
10.根据权利要求7所述的方法,其中对被抽吸的介质的比重校正实际功率值、阀关闭的功率值或者其组合。 10. The method according to claim 7, wherein the specific gravity of the correction medium is sucked actual power value, the power value of the valve closing or combinations thereof.
11.根据权利要求1所述的方法,其中所述校正阈值流量值的最小值是基于公式QMIN—=QminX (NAct/NeaTED),其中QMIN—为速度校正的最小流量,Qmin为最小流量,Nact为实际速度,并且Nkated为额定速度。 11. The method according to claim 1, wherein said minimum threshold value of the flow correction value is based on the formula QMIN- = QminX (NAct / NeaTED), wherein the minimum flow rate is corrected QMIN-, the minimum flow rate Qmin by, Nact is the actual speed and Nkated rated speed.
12.根据权利要求1所述的方法,其中所述校正阈值流量值包括的过载条件值为基于公式Qro cor = QeoX (Nact/Neated)的校正的过载流量阈值,其中为速度校正的过载流量,Qeo为过载流量,Nact为实际速度,并且Neated为额定速度。 12. The method according to claim 1, wherein said correction threshold flow rate value included in the overload condition is based on the formula Qro cor = corrected QeoX (Nact / Neated) overload flow threshold value, which is a speed correction overload traffic, Qeo overload flow, Nact actual speed, and Neated rated speed.
13.根据权利要求1所述的方法,其中所述实际流量值的计算是通过存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、速度和功率的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 13. The method according to claim 1, wherein calculating the actual flow rate value by the calibration stored in the evaluation device with respect to the motor power signal curve of the valve is closed, and the rated speed and power of the pump speed the basic performance data disclosed pump, wherein the pump performance data disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow.
14.根据权利要求1所述的方法,其中所述实际流量值的计算是通过存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、转矩的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 14. The method according to claim 1, wherein said actual flow rate value is calculated by the calibration stored in the evaluation device with respect to the velocity curve of the power valve is closed, the motor torque signal and the nominal pump speed the basic pump performance data is disclosed, wherein the disclosed pump performance data substantially optimum efficiency of power, the valve is closed and most efficient power flow.
15.根据权利要求4所述的方法,其中所述方法包括将过载条件值与实际过载流量值进行比较,从而确定所述泵的过载条件。 15. The method according to claim 4, wherein said method comprises the overload condition and the actual traffic overload value, to determine an overload condition of the pump.
16.根据权利要求8所述的方法,其中如果Pact小于KdkXPS()_N,则宣布空转条件,其中Pact为对比重=I校正的实际功率,Kdk为与当前操作速度下的阀关闭的功率相乘的系数,并且PS()_N为对比重=I校正的当前速度下的阀关闭的功率。 16. The method according to claim 8, wherein if less than Pact KdkXPS () _ N, is declared idle conditions, wherein Pact for the proportion of the actual power corrected = I, the KDK is the valve closing speed of the current operating phase of the power multiplication factor, and PS () _ N = is the specific gravity of the valve closing power at I speed correction current.
17.根据权利要求7所述的方法,其中所述校正的最小阈值流量值是基于公式Qminot =QhnX (Nact/Nkated),其中QMIN—α®为速度校正的最小流量,Qmin为最小流量,Nact为实际速度,并且Nkated为额定速度。 17. The method according to claim 7, wherein the correction flow rate a minimum threshold value is based on the formula Qminot = QhnX (Nact / Nkated), wherein the minimum flow QMIN-α® the speed correction, the minimum flow rate Qmin by, Nact is the actual speed and Nkated rated speed.
18.根据权利要求5所述的方法,其中所述过载条件值是基于公式Qro cor = QeoX (Nact/Neated),其中为速度校正的过载流量,Qeo为过载流量,Nact为实际速度,并且Neated为额定速度。 18. A method as claimed in claim, wherein said overload condition value is based on the formula Qro cor = QeoX (Nact / Neated), wherein the speed correction overload traffic, QEO overload traffic, Nact is the actual velocity, and Neated rated speed.
19.根据权利要求7所述的方法,其中所述实际流量值的计算是通过存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、速度和功率的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 19. The method according to claim 7, wherein calculating the actual flow rate value by the calibration stored in the evaluation device with respect to the motor power signal curve of the valve is closed, and the rated speed and power of the pump speed the basic performance data disclosed pump, wherein the pump performance data disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow. ` `
20.根据权利要求7所述的方法,其中所述实际流量值的计算是通过存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、转矩的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 20. The method according to claim 7, wherein said actual flow rate value is calculated by the calibration stored in the evaluation device with respect to the velocity curve of the power valve is closed, the motor torque signal and the nominal pump speed the basic pump performance data is disclosed, wherein the disclosed pump performance data substantially optimum efficiency of power, the valve is closed and most efficient power flow.
21.一种用于控制包括离心泵、离心搅拌机、离心鼓风机或者离心压缩机的泵的操作的控制器,包括: 配置为从相对于阀关闭的功率的速度的校准曲线,导出不使用传感器而确定的实际流量值;将实际流量值与基于泵速校正的、并且涉及所述泵的不期望的操作条件的校正阈值流量值进行比较,从而确定泵操作条件;以及基于所述导出的实际流量值与校正阈值流量之间的比较,控制所述泵的模块。 21. A method for controlling the operation of a controller comprising a centrifugal pump, a centrifugal stirrer, a centrifugal fan or a centrifugal compressor, comprising: a valve configured to be closed from the calibration curve of power versus speed, without using a sensor derived determining an actual flow rate value; actual flow rate value is compared with a threshold based on the flow correction value corrected pump speed, the pump and to the undesired operating conditions, to determine the pump operating conditions; and based on the actual flow rate of the derived comparison between the value of the corrected threshold value of the flow control module of the pump.
22.根据权利要求21所述的控制器,其中所述模块配置为基于所述比较适应所述泵的操作,这包括在仅发出警告之前,响应于所述泵操作条件,使用用户可设置延迟,警告并且将速度降低到安全操作速度,报错并且关断连接到所述泵的电机或者自动复位错误并且重新启动所述泵和电机以检查所述泵操作条件是否清除,并且在所述泵操作条件清除的情况下,取消所述适应并且所述泵恢复正常操作。 22. The controller according to claim 21, wherein the comparison module is configured to adapt, based on the operation of the pump, which includes a warning only until, in response to operating conditions of the pump, using the user can set the delay warning to a safe speed and reduce operating speed, and being given off a motor connected to the pump or automatically resets the error and restart the machine to check the pump and the pump operating condition is cleared and operation of the pump If the condition is cleared, and the pump is adapted to cancel said return to normal operation.
23.根据权利要求21所述的控制器,其中所述校正是基于实际泵速和额定泵速之间的关系而进行的。 23. The controller according to claim 21, wherein said correction is performed based on a relationship between the actual pump speed and pump speed rated carried out.
24.根据权利要求21所述的控制器,其中所述校正的阈值流量值包括过载条件值、最小流量值或者它们的结合。 24. The controller according to claim 21, wherein said correction value comprises a threshold traffic overload condition value, the minimum flow rate value, or a combination thereof.
25.根据权利要求21所述的控制器,其中所述模块配置为将过载条件值与实际过载流量值进行比较,从而确定所述泵的过载条件。 25. The controller according to claim 21, wherein the module is configured to overload conditions the overload value and the actual flow rate value is compared, thereby determining an overload condition of the pump.
26.根据权利要求21所述的控制器,其中所述模块配置为将校正的最小流量阈值与实际最小流量值进行比较,从而确定或者是所述泵的正常流量条件或者最小流量条件。 26. The controller according to claim 21, wherein said module is configured to compare the corrected minimum flow threshold value and the actual minimum flow rate, or to determine the normal flow condition of the pump or minimum flow conditions.
27.根据权利要求21所述的控制器,其中所述模块配置为将校正的最小阈值流量值与实际流量值进行比较,以及还将实际功率值与当前泵速下的阀关闭的功率值进行比较,从而确定所述泵的最小流量条件或者空转条件。 27. The controller according to claim 21, wherein the comparing module is configured, and is also corrected for the actual power value is a minimum threshold value and the flow rate value with the actual flow rate valve is closed the current value of power at pump speed comparison, to determine the pump minimum flow condition, or idle condition.
28.根据权利要求21所述的控制器,其中所述模块还配置为将校正的最小阈值流量值与实际流量值进行比较,以及还将实际功率值与当前泵速下的阀关闭的功率值进行比较,从而确定所述泵的最小流量条件或者空转条件,其中所述阀关闭的功率值是通过对存储在存储设备中的校准的功率相对于速度的曲线进行插值得到的。 28. The controller according to claim 21, wherein said module is further configured to compare the actual power values ​​and also with the valve closed in the current pump speed corrected power value for the minimum threshold flow rate value with the actual flow rate value compared to determine the pump minimum flow condition, or idle condition, wherein the valve is closed by the power of the power value is stored in the calibration storage device for the interpolation of the phase of the speed curve.
29.根据权利要求21所述的控制器,其中如果Pact小于KdkXPS()_N,则宣布空转条件,其中Pact为对比重=I校正的实际功率,Kdk为与当前操作速度下的阀关闭的功率相乘的系数,并且Ρ%_Ν为对比重=I校正的当前速度下的阀关闭的功率。 29. The controller according to claim 21, wherein if less than Pact KdkXPS () _ N, is declared idle conditions, wherein the specific gravity = I for the Pact actual power correction, with the KDK valve closing at the current operating speed of the power coefficient multiplication, and Ρ% _Ν = specific gravity for the valve closing of power at I speed correction current.
30.根据权利要求27所述的控制器,其中对被抽吸的介质的比重校正实际功率值、阀关闭的功率值或者其组合。 30. The controller according to claim 27, wherein the specific gravity of the correction medium is sucked actual power value, the power value of the valve closing or combinations thereof.
31.根据权利要求27所述的控制器,其中所述校正阈值流量值的最小值是基于公式Qmiiex® — Qmin ^ (NactZNeated),其中Qmiicx»为速度校正的取小流里,其中Qmin为取小流里,Nact为实际速度,并且Nkated为额定速度。 31. The controller according to claim 27, wherein said minimum threshold value of the flow correction value is based on the equation Qmiiex® - Qmin ^ (NactZNeated), wherein Qmiicx »speed correction is taken in a small stream, where Qmin is taken small stream in, Nact actual speed, and Nkated rated speed.
32.根据权利要求21所述的控制器,其中所述校正阈值流量值包括的过载条件值为基于公式Qro cor = QeoX (NactZNeated)的校正的过载流量阈值,其中为速度校正的过载流量,Qeo为过载流量,Nact为实际速度,并且Neated为额定速度。 Overload traffic overload condition 32. The controller according to claim 21, wherein said correction threshold flow value comprising a value based on the formula Qro cor = corrected QeoX (NactZNeated) overload flow threshold, wherein the speed correction, QEO overload flow, Nact actual speed, and Neated rated speed.
33.根据权利要求21所述的控制器,其中所述实际流量值的计算是基于存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、速度和功率的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 33. The controller according to claim 21, wherein calculating the actual flow rate value is based on the calibration stored in the evaluation apparatus relative to the motor power signal curve of the valve is closed, and the rated speed and power of the pump speed discloses the basic pump performance data, wherein the performance data for the pump disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow.
34.根据权利要求21所述的控制器,其中所述实际流量值的计算是基于存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、转矩的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 34. The controller according to claim 21, wherein calculating the actual flow rate based on the calibration value is stored in the evaluation device with respect to the power curve of the valve is closed, the motor torque signal and the nominal pump speed the basic performance data disclosed pump, wherein the pump performance data disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow.
35.根据权利要求21所述的控制器,其中所述控制器为变频控制器或者为可编程逻辑控制器。 35. The controller according to claim 21, wherein said controller is a variable frequency controller or a programmable logic controller.
36.根据权利要求24所述的控制器,其中所述模块配置为将过载条件值与实际过载流量值进行比较,从而确定所述泵的过载条件。 36. The controller according to claim 24, wherein the module is configured to overload conditions the overload value and the actual flow rate value is compared, thereby determining an overload condition of the pump.
37.根据权利要求28所述的控制器,其中如果Pact小于KdkXPS()_N,则宣布空转条件,其中Pact为对比重=I校正的实际功率,其中Kdk为与当前操作速度下的阀关闭的功率相乘的系数,并且PS()_N为对比重=I校正的当前速度下的阀关闭的功率。 37. The controller according to claim 28, wherein if less than Pact KdkXPS () _ N, is declared idle conditions, wherein Pact for the proportion of the actual power corrected = I, wherein Kdk with the current operating speed of the valve closure power multiplied by a coefficient, and PS () _ N = is the specific gravity of the valve closing power at I speed correction current.
38.根据权利要求28所述的控制器,其中所述校正的最小阈值流量值是基于公式QminCoe = Qmin^ (Nact/Neated),Qmin c0R为速度校正的最小流星,Qhn为最小流星,Nact为头际速度,并且Nkated为额定速度。 38. The controller according to claim 28, wherein said correction value is a minimum threshold flow rate based on the formula QminCoe = Qmin ^ (Nact / Neated), Qmin c0R for the minimum speed correction meteor, meteor minimum QHn, Nact is to inter head speed, and Nkated rated speed.
39.根据权利要求25所述的控制器,其中所述过载条件值为基于公式Qroaffi =QeoX (Nact/Neated)的校正的过载流量阈值,其中Qiaffi为速度校正的过载流量,Qeo为过载流量,Nact为实际速度,并且Neated为额定速度。 39. The controller according to claim 25, wherein said overload condition is based on the formula Qroaffi = corrected QeoX (Nact / Neated) overload flow threshold, wherein Qiaffi is a speed correction overload traffic QEO overload traffic, Nact actual speed, and Neated rated speed.
40.根据权利要求27所述的控制器,其中所述实际流量值的计算是基于存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、速度和功率的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 40. The controller according to claim 27, wherein calculating the actual flow rate value is based on the calibration stored in the evaluation apparatus relative to the motor power signal curve of the valve is closed, and the rated speed and power of the pump speed discloses the basic pump performance data, wherein the performance data for the pump disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow.
41.根据权利要求27所述的控制器,其中所述实际流量值的计算是基于存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、转矩的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 41. The controller according to claim 27, wherein calculating the actual flow rate based on the calibration value is stored in the evaluation device with respect to the power curve of the valve is closed, the motor torque signal and the nominal pump speed the basic performance data disclosed pump, wherein the pump performance data disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow.
42.—种离心泵系统,具有控制器,用于控制包括离心泵、离心搅拌机、离心鼓风机或者离心压缩机的泵的操作,所述控制器包括: 配置为从相对于阀关闭的功率的速度的校准曲线,导出不使用传感器而确定的实际流量值;将实际流量值与基于泵速校正的、并且涉及所述泵的不期望的操作条件的校正阈值流量值进行比较,从而确定泵操作条件;以及基于所述导出的实际流量值与校正阈值流量之间的比较,控制所述泵的模块。 42.- species centrifugal pump system having a controller for controlling the pump comprises a centrifugal pump, centrifugal mixers, centrifugal blower or centrifugal compressor operation, said controller comprising: a speed configured to close the valve with respect to power the calibration curve is derived without using a sensor to determine the actual flow rate value; actual flow rate value is compared based on the corrected threshold flow rate value of the pump speed correction, and to the pump of an undesirable operating condition, to determine the pump operating conditions ; and based on the comparison between the actual flow rate value of the threshold value correction derived flow rate, the pump control module.
43.根据权利要求42所述的泵系统,其中所述模块配置为基于所述比较适应所述泵的操作,这包括在仅发出警告之前,响应于所述泵操作条件,使用用户可设置延迟,警告并且将速度降低到安全操作速度,报错并且关断连接到所述泵的电机或者自动复位错误并且重新启动所述泵和电机以检查所述泵操作条件是否清除,并且如果所述泵操作条件清除,则取消所述适应并且所述泵恢复正常操作。 43. A pump system according to claim 42, wherein the comparison module is configured to adapt, based on the operation of the pump, which includes a warning only until, in response to operating conditions of the pump, using the user can set the delay warning to a safe speed and reduce operating speed, and being given off a motor connected to the pump or automatically resets the error and restart the machine to check the pump and the pump operating condition is cleared, and if the pump operation condition is cleared, then canceling the adaptation and the pump to resume normal operation.
44.根据权利要求42所述的泵系统,其中所述校正是基于实际泵速和额定泵速之间的关系而进行的。 44. A pump system according to claim 42, wherein said correction is performed based on a relationship between the actual pump speed and pump speed rated carried out.
45.根据权利要求42所述的泵系统,其中所述校正的阈值流量值包括过载条件值、最小流量值或者它们的结合。 45. A pump system according to claim 42, wherein said correction value comprises a threshold traffic overload condition value, the minimum flow rate value, or a combination thereof.
46.根据权利要求42所述的泵系统,其中所述模块配置为将过载条件值与实际过载流量值进行比较,从而确定所述泵的过载条件。 46. ​​A pump system according to claim 42, wherein the module is configured to overload conditions the overload value and the actual flow rate value is compared, thereby determining an overload condition of the pump.
47.根据权利要求42所述的泵系统,其中所述模块配置为将校正的最小流量阈值与实际最小流量值进行比较,从而确定或者是所述泵的正常流量条件或者最小流量条件。 47. A pump system according to claim 42, wherein the module is configured to correct the minimum flow threshold value and the actual minimum flow rate value, or to determine the normal flow conditions of the pump or minimum flow conditions.
48.根据权利要求42所述的泵系统,其中所述模块配置为将校正的最小阈值流量值与实际流量值进行比较,以及还将实际功率值与当前泵速下的阀关闭的功率值进行比较,从而确定所述泵的最小流量条件或者空转条件。 48. A pump system according to claim 42, wherein the comparing module is configured, and is also corrected for the actual power value is a minimum threshold value and the flow rate value with the actual flow rate valve is closed the current value of power at pump speed comparison, to determine the pump minimum flow condition, or idle condition.
49.根据权利要求42所述的泵系统,其中所述方法还包括将校正的最小阈值流量值与实际流量值进行比较,以及还将实际功率值与当前泵速下的阀关闭的功率值进行比较,从而确定所述泵的最小流量条件或者空转条件,其中所述阀关闭的功率值是通过对存储在存储设备中的校准的功率相对于速度的曲线进行插值得到的。 49. A pump system according to claim 42, wherein said method further comprises a correction minimum threshold flow rate value, and also actual power value and the actual flow rate value with the current value of the power valve is closed in pump speed comparison, to determine the pump minimum flow condition, or idle condition, wherein said valve closing power value is obtained by interpolation of the calibration stored in the power storage device with respect to the speed curve.
50.根据权利要求42所述的泵系统,其中如果Pact小于KdkXPS()_N则宣布空转条件,其中Pact为对比重=I校正的实际功率,Kdk为与当前操作速度下的阀关闭的功率相乘的系数,并且Ρ%_Ν为对比重=I校正的当前速度下的阀关闭的功率。 50. The pump system according to claim 42, wherein if less than Pact KdkXPS () _ N idle condition is declared, wherein Pact for the proportion of the actual power corrected = I, KDK with the valve closed under the current operating speed of the power phase multiplier and Ρ% _Ν = specific gravity of the valve closing power at I speed correction current.
51.根据权利要求42所述的泵系统,其中对被抽吸的介质的比重校正实际功率值、阀关闭的功率值或者其组合。 51. A pump system according to claim 42, wherein the specific gravity of the correction medium is sucked actual power value, the power value of the valve closing or combinations thereof.
52.根据权利要求49所述的泵系统,其中所述校正的最小阈值流量值是基于公式QminCoe = QminX (Nact/Nrated),其中QMIN—mR为速度校正的最小流量,Qmin为最小流量,Nact为实际速度,并且Nkated为额定速度。 52. A pump system according to claim 49, wherein said correction value is a minimum threshold flow rate based on the formula QminCoe = QminX (Nact / Nrated), wherein the speed correction QMIN-mR minimum flow, the minimum flow rate Qmin by, Nact is the actual speed and Nkated rated speed.
53.根据权利要求42所述的泵系统,其中所述校正阈值流量值包括的过载条件值为基于公式Qro cor = QeoX (NactZNeated)的校正的过载流量阈值,其中为速度校正的过载流量,Qeo为过载流量,Nact为实际速度,并且Neated为额定速度。 Overload traffic overload condition 53. The pump system according to claim 42, wherein said correction threshold flow value comprising a value based on the formula Qro cor = corrected QeoX (NactZNeated) overload flow threshold, wherein the speed correction, QEO overload flow, Nact actual speed, and Neated rated speed.
54.根据权利要求42所述的泵系统,其中所述实际流量值的计算是基于存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、速度和功率的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 54. A pump system according to claim 42, wherein calculating the actual flow rate value is based on the calibration stored in the evaluation apparatus relative to the motor power signal curve of the valve is closed, and the rated speed and power of the pump speed discloses the basic pump performance data, wherein the performance data for the pump disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow.
55.根据权利要求42所述的泵系统,其中所述实际流量值的计算是基于存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、转矩的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 55. A pump system according to claim 42, wherein calculating the actual flow value is a graph based on the valve closing speed of the power stored in the evaluation of the calibration device relative to the rated torque of the motor and the pump speed signal the basic performance data disclosed pump, wherein the pump performance data disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow.
56.根据权利要求42所述的泵系统,其中所述控制器为变频控制器或者为可编程逻辑控制器。 56. A pump system according to claim 42, wherein said controller is a variable frequency controller or a programmable logic controller.
57.根据权利要求45所述的泵系统,其中所述模块配置为将过载条件值与实际过载流量值进行比较,从而确定所述泵的过载条件。 57. A pump system according to claim 45, wherein the module is configured to overload conditions the overload value and the actual flow rate value is compared, thereby determining an overload condition of the pump.
58.根据权利要求49所述的泵系统,其中如果Pact小于KdkXPS()_N,则宣布空转条件,其中Pact为对比重=I校正的实际功率,Kdk为与当前操作速度下的阀关闭的功率相乘的系数,并且Ρ%_Ν为对比重=I校正的当前速度下的阀关闭的功率。 58. A pump system according to claim 49, wherein if less than Pact KdkXPS () _ N, is declared idle conditions, wherein the specific gravity = I for the Pact actual power correction, with the KDK valve closing at the current operating speed of the power coefficient multiplication, and Ρ% _Ν = specific gravity for the valve closing of power at I speed correction current.
59.根据权利要求48所述的泵系统,其中对被抽吸的介质的比重校正所述实际功率值、阀关闭的功率值或者其组合。 59. The pump system according to claim 48, wherein the correction of the proportion of the medium is sucked actual power value, the power value of the valve closing or combinations thereof.
60.根据权利要求48所述的泵系统,其中所述校正的最小阈值流量值是基于公式QminCoe = QminX (Nact/Nrated),其中QMIN—mR为速度校正的最小流量,Qmin为最小流量,Nact为实际速度,并且Nkated为额定速度。 60. A pump system according to claim 48, wherein said correction value is a minimum threshold flow rate based on the formula QminCoe = QminX (Nact / Nrated), wherein the speed correction QMIN-mR minimum flow, the minimum flow rate Qmin by, Nact is the actual speed and Nkated rated speed.
61.根据权利要求46所述的泵系统,其中所述过载条件值为基于公式Qroaffi =QeoX (Nact/Nrated)的校正的过载流量阈值,其中Qiaffi为速度校正的过载流量,Qeo为过载流量,Nact为实际速度,并且Neated为额定速度。 61. A pump system according to claim 46, wherein said overload condition is based on the formula Qroaffi = corrected QeoX (Nact / Nrated) overload flow threshold, wherein Qiaffi is a speed correction overload traffic QEO overload traffic, Nact actual speed, and Neated rated speed.
62.根据权利要求48所述的泵系统,其中所述实际流量值的计算是基于存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、速度和功率的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 62. A pump system according to claim 48, wherein calculating the actual flow rate value is based on the calibration stored in the evaluation apparatus relative to the motor power signal curve of the valve is closed, and the rated speed and power of the pump speed discloses the basic pump performance data, wherein the performance data for the pump disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow.
63.根据权利要求48所述的泵系统,其中所述实际流量值的计算是基于存储在评估设备中的校准的速度相对于阀关闭的功率的曲线、转矩的电机信号以及额定泵速下的基本公开泵性能数据,其中所述基本公开泵性能数据为最优效率功率、阀关闭的功率以及最优效率流量。 63. A pump system according to claim 48, wherein calculating the actual flow value is a graph based on the valve closing speed of the power stored in the evaluation of the calibration device relative to the rated torque of the motor and the pump speed signal the basic performance data disclosed pump, wherein the pump performance data disclosed substantially optimum efficiency of power, the valve is closed and most efficient power flow. · ·
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