US20100108293A1 - High precision automatiac flow balancing device - Google Patents

High precision automatiac flow balancing device Download PDF

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Publication number
US20100108293A1
US20100108293A1 US12/451,826 US45182607A US2010108293A1 US 20100108293 A1 US20100108293 A1 US 20100108293A1 US 45182607 A US45182607 A US 45182607A US 2010108293 A1 US2010108293 A1 US 2010108293A1
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United States
Prior art keywords
flow
pipeline
high precision
control
balancing device
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Abandoned
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US12/451,826
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English (en)
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Zhongxi Tan
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Individual
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Individual
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
    • G05D11/132—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components by controlling the flow of the individual components

Definitions

  • the present invention relates to the field of the circulating water control of central air-conditioning system, and in particular to an automatic flow balancing device for pipeline.
  • the energy loss due to the hydraulic disorder of circulating water system is very serious.
  • the cooling fins or the terminal devices of the central air-conditioning system are arranged in the building at different distances away, the different resistances in the pipelines cause that the flow in some pipeline loops is excessive while the flow in some pipeline loops is insufficient, uneven thermal distribution thus occurs.
  • the method of the reverse-return arrangement may be used, the cost of pipeline is too high and the energy consumption of water pump is increased due to the increase of flow path in this system. Furthermore, the reverse-return arrangement in the system can not completely solve the problem of hydraulic disorder.
  • the self-operating balance device is based on mechanical self-operation principle, and basically a mechanical spring self-operating pressure differential device is used to automatically control the pressure difference of the through hole of the flow valve element to be constant, by determining the pressure difference between two sides of the flow valve.
  • This balance device has a simple structure, but high conformity of the spring is required since the modulus of elasticity of the spring can directly affect the stability of pressure difference control, or else the conformity of pressure balance can not be guaranteed, and the precision of flow control is low.
  • the through hole of the flow valve element may be stuffed by the impurity carried in the circulating water, and the spring may become aging due to directly contact with the circulating water.
  • the manual balance device utilizes instruments to balance the pressure difference between two sides of the flow balancing valve. According to the characteristic curve of relationship between the pressure difference and the flow, the pressure difference on two sides of the flow balancing valve is adjusted by regulating the opening degree of the valve so as to obtain the corresponding value of flow as desired.
  • the manual balance device requires that each flow valve should be regulated manually one by one on the mounting spot, which requires special tools and specific person to perform the regulation. The workload is heavy. Though the precision of flow control is high, the flow balancing level of the circulating water in the entire central air-conditioning system can not be determined.
  • a high precision automatic flow balancing device comprises a flow balancing valve controlled by an electric actuator and provided in each pipeline; a flow sensor provided in the each pipeline and connected to a control terminal; wherein the control terminal receives a flow signal of the flow sensor in the each pipeline and compares a preset value with the flow signal and then gives a control signal to the electric actuator so as to control the flow balancing valve to adjust the flow of the pipeline, forming a closed control loop.
  • the signal of flow in the pipeline is detected by the flow sensor continuously and then transmitted to the control terminal to be compared with the preset flow value, and a control signal is then outputted to the electric actuator to control the opening degree of the flow balancing valve to enable the flow in the pipeline loop to meet the requirement of the preset value.
  • Flow sensors are respectively mounted in the pipelines of the circulating water system, and high-precision flow control can be obtained by the water distribution setting and regulating of the control terminal. The manual regulation on the spot is thus not necessary, and the workload is reduced accordingly.
  • control terminal may be connected to a network module. It is thus possible for remote setting and monitoring via network, and realizes the visible remote detecting and regulating of the flow in the pipeline network system, which further improves the automation level of the operation.
  • control terminal may be provided with an interface for connecting with the controller of water pump in the pipeline network.
  • the control terminal can output a signal to the pump controller to regulate the rotate speed of the water pump and thus regulate the flow.
  • the way for hydraulic regulation is increased accordingly.
  • the flow sensor may be a mechanical flow sensor, an electromagnetic flow sensor, a vortex flow sensor or a supersonic flow sensor.
  • the electric actuator has a linear actuator or a rotary actuator.
  • the flow balancing valve may be a regulating valve or a ball valve. Proper components are selected according to the specific design requirement of different loop.
  • the present invention has the following advantages: convenient in the setting of device, easy regulation of the flow, high precision, available in the remote setting and monitoring, good monitoring of the whole pipeline network of the circulating water system, easy regulation of a specific loop, and high automation level.
  • FIG. 1 is a schematic view of the connection of the parts of an embodiment of the present invention.
  • the control terminal 7 is connected to a network module 5 . It is thus possible for remote setting and monitoring via network.
  • the control terminal 7 is provided with an interface for connecting to the water pump controller of the pipeline network. In the situation that the flow balancing valve in a specific pipeline loop is completely opened, the control terminal can output a signal to the pump controller to regulate the rotate speed of the water pump 6 and thus regulate the flow. The way for hydraulic regulation is increased accordingly.
  • the signal of flow in the pipeline is detected by the flow sensor continuously and then transmitted to the control terminal to be compared with the preset flow value, and a control signal is then outputted to the electric actuator to control the opening degree of the flow balancing valve to enable the flow in the pipeline loop to meet the requirement of the preset value.
  • Flow sensors are respectively mounted in the pipelines of the circulating water system, and high-precision flow control can be obtained by the water distribution setting and regulating of the control terminal. The manual regulation on the spot is thus not necessary, and the workload is reduced accordingly.
  • the flow sensor may be a mechanical flow sensor, an electromagnetic flow sensor, a vortex flow sensor or a supersonic flow sensor.
  • the electric actuator has a linear actuator or a rotary actuator.
  • the flow balancing valve may be a regulating valve or a ball valve. Proper components are selected according to the specific design requirement of different loop.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Flow Control (AREA)
US12/451,826 2007-09-27 2007-11-01 High precision automatiac flow balancing device Abandoned US20100108293A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SN200710030563.5 2007-09-27
CNA2007100305635A CN101398129A (zh) 2007-09-27 2007-09-27 高精度流量自动平衡装置
PCT/CN2007/003104 WO2009039685A1 (fr) 2007-09-27 2007-11-01 Dispositif d'équilibrage d'écoulement automatique de haute précision

Publications (1)

Publication Number Publication Date
US20100108293A1 true US20100108293A1 (en) 2010-05-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US12/451,826 Abandoned US20100108293A1 (en) 2007-09-27 2007-11-01 High precision automatiac flow balancing device

Country Status (3)

Country Link
US (1) US20100108293A1 (zh)
CN (1) CN101398129A (zh)
WO (1) WO2009039685A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103402214A (zh) * 2013-07-17 2013-11-20 宁夏新航信息科技有限公司 一种手机的智能化流量监控方法
US20150089963A1 (en) * 2012-04-06 2015-04-02 Zhongxi Tan Central air-conditioning system and control method thereof
CN109631148A (zh) * 2018-11-30 2019-04-16 黄维 一种水力平衡调整系统及其调试方法
CN113266693A (zh) * 2021-04-09 2021-08-17 山东秉恬信息科技有限公司 一种物联网智能自动热力平衡阀及供暖系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104564629A (zh) * 2013-10-09 2015-04-29 宁夏琪凯节能设备有限公司 一种新型节能计量泵
CN104696706B (zh) * 2015-01-20 2017-08-04 哈尔滨工业大学 基于气压驱动的微流体流量调节装置
CN107588223A (zh) * 2017-09-27 2018-01-16 安徽华斯源新能源科技有限公司 一种暖通末端无线数字量智能调节阀
CN113864271B (zh) * 2021-09-30 2023-04-11 珠海松柏科技有限公司 一种精密控制流量的数显式智能蝶阀及管路流量控制系统

Citations (17)

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US5062446A (en) * 1991-01-07 1991-11-05 Sematech, Inc. Intelligent mass flow controller
US5101862A (en) * 1991-08-08 1992-04-07 Leete Barrett C Rotary actuator and valve control system
US5307288A (en) * 1991-06-07 1994-04-26 Haines Lawrence A Unitary fluid flow production and control system
US5351705A (en) * 1992-08-26 1994-10-04 Watertronics, Inc. Method and apparatus for controlling fluid pumps and valves to regulate fluid pressure and to eliminate fluid flow surges
US5850850A (en) * 1994-12-29 1998-12-22 Millipore Corporation Flow controller, parts of flow controller, and related method
US5865205A (en) * 1997-04-17 1999-02-02 Applied Materials, Inc. Dynamic gas flow controller
US5927400A (en) * 1995-06-06 1999-07-27 Eltek S.P.A. Device and method for the adjustment of the flow rate of a liquid, with closed loop control
US6389364B1 (en) * 1999-07-10 2002-05-14 Mykrolis Corporation System and method for a digital mass flow controller
US20050000300A1 (en) * 2003-05-15 2005-01-06 Thomas Zingg Electromagnetic flow sensor
US20050126635A1 (en) * 2003-12-16 2005-06-16 Sylvan Addink Smart flow anomaly detector
US20050273014A1 (en) * 2004-06-04 2005-12-08 The Regents Of The University Of Michigan Electromagnetic flow sensor device
US20060124173A1 (en) * 2004-12-14 2006-06-15 Hyeon-Su An Mass flow controller
US20070295104A1 (en) * 2006-06-12 2007-12-27 Precision Pumping Systems, Inc. Fluid sensor with mechanical positional feedback
US20080140260A1 (en) * 2006-12-07 2008-06-12 Junhua Ding Controller gain scheduling for mass flow controllers
US20090049926A1 (en) * 2007-08-22 2009-02-26 Invensys Systems, Inc. Triple Redundancy Vortex Flowmeter System
US7543595B2 (en) * 2002-06-28 2009-06-09 Siemens Building Technologies, Inc. Valve calibration method and apparatus
US8019481B2 (en) * 2006-12-12 2011-09-13 Horiba Stec, Co., Ltd. Flow rate ratio control device

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JPH0612127A (ja) * 1992-06-26 1994-01-21 Matsushita Electric Ind Co Ltd 流量制御装置
EP0858018A1 (de) * 1997-02-06 1998-08-12 Georg Fischer Rohrleitungssysteme AG Verfahren und Vorrichtung zur Durchflussregelung von Flüssigkeiten
JPH11184531A (ja) * 1997-12-25 1999-07-09 Fujikoshi Mach Corp 流体供給装置の流量制御システム
CN2716761Y (zh) * 2004-04-02 2005-08-10 天津力源永春科技发展有限公司 换热机组智能化控制装置
CN2876486Y (zh) * 2005-12-02 2007-03-07 沈新荣 智能型高精度动态流量平衡阀

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062446A (en) * 1991-01-07 1991-11-05 Sematech, Inc. Intelligent mass flow controller
US5307288A (en) * 1991-06-07 1994-04-26 Haines Lawrence A Unitary fluid flow production and control system
US5101862A (en) * 1991-08-08 1992-04-07 Leete Barrett C Rotary actuator and valve control system
US5351705A (en) * 1992-08-26 1994-10-04 Watertronics, Inc. Method and apparatus for controlling fluid pumps and valves to regulate fluid pressure and to eliminate fluid flow surges
US5850850A (en) * 1994-12-29 1998-12-22 Millipore Corporation Flow controller, parts of flow controller, and related method
US5927400A (en) * 1995-06-06 1999-07-27 Eltek S.P.A. Device and method for the adjustment of the flow rate of a liquid, with closed loop control
US5865205A (en) * 1997-04-17 1999-02-02 Applied Materials, Inc. Dynamic gas flow controller
US6389364B1 (en) * 1999-07-10 2002-05-14 Mykrolis Corporation System and method for a digital mass flow controller
US7543595B2 (en) * 2002-06-28 2009-06-09 Siemens Building Technologies, Inc. Valve calibration method and apparatus
US20050000300A1 (en) * 2003-05-15 2005-01-06 Thomas Zingg Electromagnetic flow sensor
US20050126635A1 (en) * 2003-12-16 2005-06-16 Sylvan Addink Smart flow anomaly detector
US20050273014A1 (en) * 2004-06-04 2005-12-08 The Regents Of The University Of Michigan Electromagnetic flow sensor device
US20060124173A1 (en) * 2004-12-14 2006-06-15 Hyeon-Su An Mass flow controller
US20070295104A1 (en) * 2006-06-12 2007-12-27 Precision Pumping Systems, Inc. Fluid sensor with mechanical positional feedback
US20080140260A1 (en) * 2006-12-07 2008-06-12 Junhua Ding Controller gain scheduling for mass flow controllers
US8019481B2 (en) * 2006-12-12 2011-09-13 Horiba Stec, Co., Ltd. Flow rate ratio control device
US20090049926A1 (en) * 2007-08-22 2009-02-26 Invensys Systems, Inc. Triple Redundancy Vortex Flowmeter System

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150089963A1 (en) * 2012-04-06 2015-04-02 Zhongxi Tan Central air-conditioning system and control method thereof
US9845983B2 (en) * 2012-04-06 2017-12-19 Zhongxi Tan Central air-conditioning system and control method thereof
CN103402214A (zh) * 2013-07-17 2013-11-20 宁夏新航信息科技有限公司 一种手机的智能化流量监控方法
CN109631148A (zh) * 2018-11-30 2019-04-16 黄维 一种水力平衡调整系统及其调试方法
CN113266693A (zh) * 2021-04-09 2021-08-17 山东秉恬信息科技有限公司 一种物联网智能自动热力平衡阀及供暖系统

Also Published As

Publication number Publication date
CN101398129A (zh) 2009-04-01
WO2009039685A1 (fr) 2009-04-02

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