WO2002066835A1 - Procede de surveillance d'une pompe et pompe utilisant ce procede - Google Patents

Procede de surveillance d'une pompe et pompe utilisant ce procede Download PDF

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Publication number
WO2002066835A1
WO2002066835A1 PCT/CN2002/000039 CN0200039W WO02066835A1 WO 2002066835 A1 WO2002066835 A1 WO 2002066835A1 CN 0200039 W CN0200039 W CN 0200039W WO 02066835 A1 WO02066835 A1 WO 02066835A1
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WO
WIPO (PCT)
Prior art keywords
pump
module
fluid density
processor
output
Prior art date
Application number
PCT/CN2002/000039
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English (en)
Chinese (zh)
Inventor
Donggui Li
Original Assignee
Donggui Li
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 Donggui Li filed Critical Donggui Li
Publication of WO2002066835A1 publication Critical patent/WO2002066835A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid

Definitions

  • the present invention relates to a method for monitoring hydraulic performance such as a flow rate, a head, a cavitation margin, and a power of a pump, and a pump using the method.
  • the hydraulic performance parameters of traditional mechanical pump products, especially industrial process pumps, are manually adjusted by valves through the valve to a flow or head that can meet the process requirements; or they can be measured and adjusted manually according to the flowmeter in the pipeline.
  • the former method can only vaguely convey liquid, but cannot accurately convey liquid quantitatively, resulting in low product quality or waste of materials due to excessive conveyance.
  • installing a flow meter in the pipeline can quantitatively convey liquid, the engineering cost improve.
  • parameters such as the flow, head and power of the pump can also be monitored in some processes, and some are also controlled automatically.
  • the pump body is connected to the prime mover through a coupling, an electric valve is connected to the pipeline connected to the pump body outlet, and a control circuit is connected to the prime mover and the electric valve.
  • the input of the control circuit The signal must be supplied by a pressure sensor and a flow sensor installed on the outlet pipe. The setting of the sensor not only makes installation and maintenance of the entire equipment troublesome, but also because the cost of the flow sensor is high, the monitoring cost of the entire equipment is correspondingly increased.
  • a first object of the present invention is to provide a method for realizing accurate automatic monitoring without using a flow sensor or a power sensor.
  • the present invention provides a method for monitoring a pump, which includes the following steps: A pre-programmed processor is provided, in which a characteristic parameter curve, fluid density or control of the pump is stored in advance or input and stored during use. Parameters, or a combination of them; measuring the pressure at the outlet end and the inlet end of the pump, and transmitting the measured values to the pre-programmed processor; the pre-programmed processor according to the characteristic parameter curve stored therein, the fluid density, and The pressure value is input to calculate various performance parameters of the pump; output the calculated performance parameters, or / and drive a control drive device that controls the operation of the pump based on the calculated performance parameters and control parameters
  • the control driving device controls the frequency converter of the frequency conversion motor that is the prime mover of the pump, or controls the electric valve installed on the pipeline connected to the pump, thereby controlling the operation of the pump.
  • this method is more accurate than the existing monitoring methods and can achieve accurate quantification Transporting liquids.
  • Another object of the present invention is to provide a pump that realizes accurate automatic monitoring without using a flow sensor and a power sensor.
  • the present invention provides a pump, in which a pressure sensor is respectively provided at an inlet end and an outlet end of a pump body, and an output signal of the pressure sensor is connected to a monitoring device, and the monitoring device includes: a power source for providing power A system module; a data acquisition module that receives the output of the pressure sensor; a processor that processes data input from the data acquisition module according to the hydraulic performance characteristic curve and fluid density stored therein; and an output that receives the output of the processor Module, the output module is used to output information to the outside.
  • Another object of the present invention is to provide a power sensor without using a flow sensor. Intelligent pump for precise monitoring.
  • the present invention provides a pump, in which a pressure sensor is respectively provided at an inlet end and an outlet end of a pump body, and an output signal of the pressure sensor is connected to a monitoring device, and the monitoring device includes: a power source for providing power A system module; a data acquisition module that receives the output of the pressure sensor; a processor that processes data input from the data acquisition module according to the characteristic curve, fluid density, and control parameters stored therein; and a processor that receives the output of the processor A control drive module, which is used to output information to a device that controls the operation of the pump.
  • an electric valve that controls the flow rate may be connected to the control drive module, or a variable frequency motor serving as a prime mover of the pump may be connected to the control drive module through a frequency converter.
  • the above-mentioned pump monitoring device may further include an input module for inputting control parameters such as flow rate and Yang Cheng during operation.
  • the data acquisition module may further receive an input of a fluid density sensor provided on another good service site, such as a pipeline, so that the processor performs data processing according to the fluid density obtained in real time.
  • a fluid density sensor provided on another good service site, such as a pipeline
  • FIG. 1 is a schematic diagram of a pump, an electric valve and a prime mover of the present invention
  • FIG. 1 is used to explain the monitoring method and the working principle of the pump of the present invention
  • Country 3 is a block diagram of the method of the present invention.
  • Fig. 4 is a block diagram showing a configuration of a monitoring device in the pump of the present invention. detailed description
  • the method for controlling a pump provided by the present invention includes the following steps:
  • the pre-programmed processor calculates various performances of the pump based on the characteristic parameter curve and fluid density stored therein, and the pressure value is input.
  • control drive device controls the frequency conversion of the prime mover of the pump
  • the frequency converter of the motor, or the electric valve installed on the pipeline connected to the pump thus controls the operation of the pump.
  • the fluid density passing through the pump can also be measured in real time in step b).
  • a fluid density sensor is installed at the inlet of the pump to measure the fluid density at any time, and the measured value replaces the pre-stored in the processor. Fluid density, so that the method can flexibly adapt to different fluids, including adapting to small changes in fluid density in the same process flow, so as to accurately monitor the operation of the pump.
  • the present invention also provides a pump.
  • the method and the pump will be described in the following description.
  • FIG. 1 shows a pump, an electric valve 5 and a prime mover 3 of the present invention.
  • the prime mover 3 may be a variable frequency motor.
  • the pump body 1 is connected to the prime mover 3 through a coupling 2
  • an electric valve 5 is connected to the pipeline 4 connected to the pump body 1
  • pressure sensors are provided at the inlet end and the outlet end of the pump body 1, respectively.
  • the output signals of 6, 7, pressure sensors 6, 7 are connected to the monitoring device 8. As shown in FIG.
  • the monitoring device 8 mainly includes: a power supply system module 801 that provides power; a data acquisition module 802 that receives the outputs of the sensors 6, 7 mounted on the pump body 1, which may be any suitable existing A technical implementation, such as an analog-to-digital conversion module; a processor 803 that processes data input from the data acquisition module 802 according to a characteristic curve and a fluid density stored therein. The principle of the processor 803 processing data will be described in detail below.
  • the monitoring device further includes an output module for receiving and outputting the output data of the processor 803, so that the operator can understand the operation status of the pump, and even Manual control or adjustment of the production process according to the information obtained, so as to ensure that the production of industrial processes and their products meet the expected design goals and product quality.
  • the output module is a Yuxian module 805, which is used to display automatic monitoring data. In this way, the monitoring device can automatically and intuitively display parameters such as the flow rate, head, and power consumption of the pump.
  • the output module may also be a printing module, which is used to print out the automatically detected data.
  • the monitoring device may further include a storage module for storing the data of the pump within a certain period for viewing and printing.
  • the monitoring device further includes a control driving module 804.
  • the control driving module 804 is configured to output command information to a device that controls the operation of the pump, thereby controlling the operation of the pump.
  • the control driving module can be implemented by any suitable existing technology, such as a digital-to-analog conversion module.
  • the pump for implementing intelligent monitoring may also have the above-mentioned various output modules, storage modules, and any combination thereof.
  • the electric valve 5 for controlling the flow rate may be connected to the control driving module 804, or a variable frequency motor serving as the prime mover (3) of the pump may be connected to the control driving module 804 through an inverter 9 (the connection relationship is in (Not shown in Figure 1).
  • all monitoring devices can include an input module 806, such as a keyboard, allows certain parameters to be entered later. For example, you can enter the density of the fluid. This allows the pump to accurately monitor different fluids.
  • parameters to be controlled may be input from a keyboard, such as a pump flow rate and a lift control value 302.
  • a new characteristic parameter curve may be input.
  • the monitoring device may further include a data communication module 807, which is used to implement communication of each pump in the pump group, and may be connected to a central processing unit, thereby implementing monitoring and control of the pump group.
  • a data communication module 807 which is used to implement communication of each pump in the pump group, and may be connected to a central processing unit, thereby implementing monitoring and control of the pump group.
  • the pressure signals 303 measured by the pressure sensors 6, 7 at the outlet end and the inlet end of the pump body 1 are input into a monitoring device 8 (the processor in the method of the present invention is part of the monitoring device), The monitoring device 8 processes the signals and then outputs data (not shown in the figure).
  • the control driving device in the monitoring device sends instructions to the electric valve to control the opening and adjustment of the electric valve to control the operation of the pump; and / or sends a frequency modulation instruction 304 to the inverter 9 and is controlled by the inverter
  • the frequency of the variable frequency motor is used to control the pump.
  • the processor 803 is, for example, a microcontroller processor, in which pre-programming is performed according to the present invention. After understanding the principles described below, a person of ordinary skill in the art can complete the pre-programming.
  • the programming of the processor 803 is based on a mathematical model of the hydraulic performance parameter curve of the pump. This mathematical model is established by accurately measuring hydraulic performance parameters before the pump leaves the factory.
  • the specific mathematical model is as follows:
  • the processor 803 may store in advance the three curves tested before the pump leaves the factory and the user-provided fluid density 301 (see FIG. 3).
  • control and drive module may send a frequency modulation instruction 304 to the inverter 9 to control the corresponding motor frequency conversion coefficient and motor speed, thereby ensuring the required operating point, and the operating point falls within the high-efficiency zone.
  • the characteristic curve, fluid density, and control parameters can also be input at a later stage.
  • the data acquisition module may also receive an input of a fluid density sensor provided on a service site such as a pipeline or in a pump body, so that the processor performs data processing according to the fluid density obtained in real time.
  • the monitoring device may be integrated with the pump, or may be relatively independent from the pump and connected by a line.
  • the monitoring device may not only be connected to a sensor on a pump body; it may also be connected not only to a pressure sensor or a fluid density sensor, but also to, for example, a bearing temperature sensor to implement functions such as alarm; similarly, the The monitoring device can also use the output signal to control other parameters that affect the operation of the pump to ensure its safety and reliability.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Cette invention se rapporte à un procédé de surveillance d'une pompe et à une pompe utilisant ce procédé. Afin de surveiller avec précision le fonctionnement d'une pompe sans utiliser de capteurs de pression, on mémorise au préalable dans un processeur préprogrammé le diagramme des caractères de la pompe, la densité du fluide et les paramètres de commande, notamment. Pendant le fonctionnement, la pression à la sortie et à l'entrée de la pompe est mesurée. Les paramètres de performances sont évalués par le processeur en fonction de la pression, de la densité, des paramètres de commande et du diagramme des caractères ainsi établis. Les paramètres évalués sont utilisés pour commander la pompe. La pompe faisant l'objet de cette invention comprend des capteurs de pression (6, 7) montés à la sortie et à l'entrée de la pompe (1), des capteurs destinés à détecter la densité du fluide dans les circonstances de travail, et un dispositif de surveillance (8) qui reçoit les signaux provenant de chacun des capteurs. Le dispositif de surveillance comporte un module de système moteur (801), un module de collecte de données (802), un processeur préprogrammé (803) et un module d'exécution de commande (804), notamment. Le concept de cette invention est essentiellement utilisé dans les pompes à fluide industrielles et dans les opérations de surveillance de ces pompes.
PCT/CN2002/000039 2001-02-19 2002-01-23 Procede de surveillance d'une pompe et pompe utilisant ce procede WO2002066835A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN01211714U CN2466390Y (zh) 2001-02-19 2001-02-19 工业流程智能泵
CN01211714.5 2001-02-19

Publications (1)

Publication Number Publication Date
WO2002066835A1 true WO2002066835A1 (fr) 2002-08-29

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WO (1) WO2002066835A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7740152B2 (en) 2006-03-06 2010-06-22 The Coca-Cola Company Pump system with calibration curve
US8162176B2 (en) 2007-09-06 2012-04-24 The Coca-Cola Company Method and apparatuses for providing a selectable beverage
CN103671047A (zh) * 2013-12-13 2014-03-26 新界泵业集团股份有限公司 一种带控制器的电泵及其控制方法
CN107489432A (zh) * 2017-09-18 2017-12-19 山东科技大学 隧道支护注浆设备及其注浆方法
CN108572607A (zh) * 2017-03-10 2018-09-25 南京嘉宏汇科技股份有限公司 基于plc的工艺流程监控装置
US10631560B2 (en) 2006-03-06 2020-04-28 The Coca-Cola Company Methods and apparatuses for making compositions comprising an acid and an acid degradable component and/or compositions comprising a plurality of selectable components
CN112657771A (zh) * 2020-12-16 2021-04-16 浩科机器人（苏州）有限公司 一种智能供料与监控的点胶机器人及其工作方法
CN113294352A (zh) * 2021-06-09 2021-08-24 合肥三益江海智能科技有限公司 用于潜水电泵的控制系统
CN113623193A (zh) * 2021-08-10 2021-11-09 浙江大学湖州研究院 一种变频泵运行状态监测系统及其监测方法
CN113738630A (zh) * 2021-08-31 2021-12-03 山东挚刚智能控制机械有限公司 一种用于远程采集水泵运行数据的系统
US11429120B2 (en) 2006-03-06 2022-08-30 Deka Products Limited Partnership Product dispensing system
US11661329B2 (en) 2006-03-06 2023-05-30 Deka Products Limited Partnership System and method for generating a drive signal
US11906988B2 (en) 2006-03-06 2024-02-20 Deka Products Limited Partnership Product dispensing system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101994704B (zh) * 2010-10-26 2012-02-15 浙江佳力科技股份有限公司 化工流程智能泵及其控制方法
JP6082772B2 (ja) * 2015-05-29 2017-02-15 日立アプライアンス株式会社 ポンプ装置
CN106151005A (zh) * 2016-08-16 2016-11-23 常州市合达油泵有限公司 自保护油泵

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DE4243075A1 (de) * 1992-12-18 1994-06-23 Rexroth Mannesmann Gmbh Elektrisch geregelte Verstellpumpe
WO2000057063A1 (fr) * 1999-03-24 2000-09-28 Itt Manufacturing Enterprises Appareil et procede de commande d'un systeme de pompe
CN2410444Y (zh) * 2000-03-08 2000-12-13 彭健 稠油井泵安全保护控制器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243075A1 (de) * 1992-12-18 1994-06-23 Rexroth Mannesmann Gmbh Elektrisch geregelte Verstellpumpe
WO2000057063A1 (fr) * 1999-03-24 2000-09-28 Itt Manufacturing Enterprises Appareil et procede de commande d'un systeme de pompe
CN2410444Y (zh) * 2000-03-08 2000-12-13 彭健 稠油井泵安全保护控制器

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10631560B2 (en) 2006-03-06 2020-04-28 The Coca-Cola Company Methods and apparatuses for making compositions comprising an acid and an acid degradable component and/or compositions comprising a plurality of selectable components
US11975960B2 (en) 2006-03-06 2024-05-07 Deka Products Limited Partnership System and method for generating a drive signal
US7740152B2 (en) 2006-03-06 2010-06-22 The Coca-Cola Company Pump system with calibration curve
US11429120B2 (en) 2006-03-06 2022-08-30 Deka Products Limited Partnership Product dispensing system
US10631558B2 (en) 2006-03-06 2020-04-28 The Coca-Cola Company Methods and apparatuses for making compositions comprising an acid and an acid degradable component and/or compositions comprising a plurality of selectable components
US11906988B2 (en) 2006-03-06 2024-02-20 Deka Products Limited Partnership Product dispensing system
US11661329B2 (en) 2006-03-06 2023-05-30 Deka Products Limited Partnership System and method for generating a drive signal
US8162176B2 (en) 2007-09-06 2012-04-24 The Coca-Cola Company Method and apparatuses for providing a selectable beverage
US8434642B2 (en) 2007-09-06 2013-05-07 The Coca-Cola Company Method and apparatus for providing a selectable beverage
US8814000B2 (en) 2007-09-06 2014-08-26 The Coca-Cola Company Method and apparatuses for providing a selectable beverage
US10046959B2 (en) 2007-09-06 2018-08-14 The Coca-Cola Company Method and apparatuses for providing a selectable beverage
CN103671047A (zh) * 2013-12-13 2014-03-26 新界泵业集团股份有限公司 一种带控制器的电泵及其控制方法
CN103671047B (zh) * 2013-12-13 2016-04-13 新界泵业集团股份有限公司 一种带控制器的电泵及其控制方法
CN108572607A (zh) * 2017-03-10 2018-09-25 南京嘉宏汇科技股份有限公司 基于plc的工艺流程监控装置
CN107489432A (zh) * 2017-09-18 2017-12-19 山东科技大学 隧道支护注浆设备及其注浆方法
CN112657771A (zh) * 2020-12-16 2021-04-16 浩科机器人（苏州）有限公司 一种智能供料与监控的点胶机器人及其工作方法
CN113294352A (zh) * 2021-06-09 2021-08-24 合肥三益江海智能科技有限公司 用于潜水电泵的控制系统
CN113623193A (zh) * 2021-08-10 2021-11-09 浙江大学湖州研究院 一种变频泵运行状态监测系统及其监测方法
CN113738630A (zh) * 2021-08-31 2021-12-03 山东挚刚智能控制机械有限公司 一种用于远程采集水泵运行数据的系统

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