WO2009039685A1 - High precision automatic flow balancing device - Google Patents

High precision automatic flow balancing device Download PDF

Info

Publication number
WO2009039685A1
WO2009039685A1 PCT/CN2007/003104 CN2007003104W WO2009039685A1 WO 2009039685 A1 WO2009039685 A1 WO 2009039685A1 CN 2007003104 W CN2007003104 W CN 2007003104W WO 2009039685 A1 WO2009039685 A1 WO 2009039685A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow
balancing device
pipeline
flow sensor
control terminal
Prior art date
Application number
PCT/CN2007/003104
Other languages
French (fr)
Chinese (zh)
Inventor
Zhongxi Tan
Original Assignee
Zhongxi Tan
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 Zhongxi Tan filed Critical Zhongxi Tan
Priority to US12/451,826 priority Critical patent/US20100108293A1/en
Publication of WO2009039685A1 publication Critical patent/WO2009039685A1/en

Links

Classifications

    • 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 invention belongs to the technical field of circulating water control of a central air conditioning system, and particularly relates to a flow automatic adjusting device for pipeline hydraulic power. Background technique
  • the flow balance device there are two main technologies for the flow balance device, one can be called a self-balancing device, and the other is a manual balancing device.
  • the self-balancing balance device is based on the principle of mechanical self-reliance. Basically, by measuring the pressure difference between the two sides of the flow valve, the mechanical spring self-operated differential pressure device is used to automatically control the pressure difference of the flow port through-hole.
  • the balance device has a simple structure, but the consistency requirement for the magazine is very slim.
  • the elastic modulus of the spring has a direct influence on the stability of the differential pressure control. Otherwise, it is difficult to ensure the consistency of the pressure balance, and the flow control accuracy is not high.
  • the spool through hole is easily blocked by the circulating water carrying impurities, and the spring directly contacts the circulating water, and the aging is fast.
  • the manual balance device adopts the pressure difference between the two sides of the meter balance flow valve. According to the characteristic curve of the pressure difference and the flow rate, the pressure difference between the two sides of the valve is changed by adjusting the opening degree of the valve, thereby obtaining the corresponding need to be adjusted. Flow value.
  • This balancing device requires manual testing of each flow valve at the installation site. The site requires special equipment debugging, and the workload is large. Although the flow control is relatively accurate, the water circulation flow balance of the entire central air conditioning system cannot be known. Summary of the invention
  • the object of the present invention is to overcome the deficiencies of the prior art and provide a high precision with easy setting and accurate flow control.
  • a high-precision flow automatic balancing device comprising a flow balance valve controlled by an electric actuator disposed on a pipeline, and a flow sensor connected to the control terminal on the same pipeline, the control terminal
  • the flow sensor input signals on each pipeline are respectively received, compared with preset values, and the control signals are output to the electric actuator, and the flow balance valve is controlled to adjust the flow of the pipeline to form a closed loop control loop.
  • the flow sensor continuously detects the flow signal in the pipeline and transmits it to the control terminal. Compared with the preset flow value, the control signal is output to the electric actuator, and the operation flow balances the wide opening, so that the flow in the pipeline loop satisfies the preset value. Requirements.
  • Flow sensors are installed on each pipe of the circulating water system. By controlling the terminal setting and regulating the amount of water dispensed, high-precision flow control can be realized, and manual on-site debugging and inspection is eliminated, which reduces the workload.
  • the control terminal is connected to the network module, and can realize remote setting and monitoring through the network, realize remote visual flow detection and adjustment of the pipe network system, and further improve the automation degree of the control.
  • the control terminal is provided with a connection interface connecting the pipe network water pump controller.
  • the control terminal can output a signal, so that the water pump controller regulates the rotation speed of the water pump and adjusts the flow rate. Increase the means and means of hydraulic adjustment.
  • the flow sensor is a mechanical flow sensor, an electromagnetic flow sensor, a vortex flow sensor or an ultrasonic flow sensor, and the electric actuator is a straight stroke structure or a angular stroke structure, and the flow balance is a regulating valve or Ball valves allow flexible selection of the right components for different loop design requirements.
  • the invention has the advantages that the device is convenient to set up, the flow adjustment is easy, the precision is high, the remote setting and monitoring can be realized, the overall pipe network monitoring of the circulating water system is in place, the adjustment of the specific loop is easy, and the degree of automation is high.
  • FIG. 1 is a schematic view showing the connection of components according to an embodiment of the present invention.
  • a high-precision flow automatic balancing device is used in a water circulation system of a central air conditioner, which includes flow balance valves controlled by electric actuators 2, 4 respectively disposed on two circulating water pipes. 3.
  • Each flow line is further provided with a flow sensor 5, 6 connected to the control terminal 7, and the control terminal 7 receives each tube separately.
  • the real-time flow signal input by the flow sensor 5, 6 on the road is compared with the internal preset value, and the control signal is output to each electric actuator 2, 4, respectively, and the flow balance valve 1 and 3 on the corresponding pipeline are respectively controlled to adjust the flow of the pipeline.
  • the control terminal 7 is connected to the network module 5, and can be remotely set and monitored through a network.
  • the control terminal 7 is provided with a connection interface connecting the pipe network water pump controller. When the flow balance valve of the specific pipeline loop is fully opened, the control terminal can output a signal, so that the water pump controller regulates the rotation speed of the water pump 6, adjusts the flow rate, and increases The means and means of hydraulic regulation.
  • the flow sensor continuously detects the flow signal in the pipeline and transmits it to the control terminal, compares it with the preset flow value, outputs a control signal to the electric actuator, and operates the opening of the flow balance valve to make the flow in the pipeline loop meet the preset value.
  • Flow sensors are installed on each pipe of the circulating water system. By controlling the terminal setting and regulating the amount of water dispensed, high-precision flow control can be realized, and manual on-site debugging and inspection is eliminated, which reduces the workload.
  • the flow sensor can be a mechanical flow sensor, an electromagnetic flow sensor, a vortex flow sensor or an ultrasonic flow sensor.
  • the electric actuator can be configured with a straight stroke structure or a quarter stroke structure.
  • the flow balance valve can be equipped with a regulating valve or a ball valve, depending on the ring. Road design requires flexible selection of the right components.

Abstract

A high precision automatic flow balancing device comprises a flow balancing valve set at pipeline which is controlled by an actuator .A flow sensor at the same pipeline is connected to a control terminal. The control terminal compares the preset value with the output signals of sensors from each pipeline and gives a control signal to the actuator forming a closed control loop to control the flow of fluid.

Description

高精度流量自动平衡装置 技术领域  High-precision flow automatic balancing device
本发明属于中央空调系统循环水控制技术领域，尤其是涉及管路水力的流量自动调 节装置。 背景技术  The invention belongs to the technical field of circulating water control of a central air conditioning system, and particularly relates to a flow automatic adjusting device for pipeline hydraulic power. Background technique
在中央空调或采暖的应用之中， 由于循环水系统水力失调造成的能耗损失非常严 重。 由于分布在建筑物内的中央空调末端设备或散热片距离循环水泵的位置远近不一， 系统管网阻力不同造成了部分环路的流量过大， 部分环路的流量过小， 形成了系统冷热 不均的现象。虽然可以采用管路同程的设计方法， 但同时又带来了管道造价过高和系统 流程增大带来的水泵能耗的增加。而且，系统同程也不能完全解决管网水力失调的问题。 有时为了满足系统最不利点的流量需求， 必须加大流量， 造成系统实际低负荷时的能源 浪费。 因此， 管网的流量平衡对系统的节能降耗是十分必要的。  In central air conditioning or heating applications, energy losses due to hydraulic imbalances in the circulating water system are severe. Because the central air conditioning terminal equipment or heat sink distributed in the building is different from the circulating water pump, the system pipe network resistance is different, causing the flow of some loops to be too large, and the flow of some loops is too small, forming a system cold. The phenomenon of uneven heat. Although it is possible to use the same design method of the pipeline, it also brings about an increase in the energy consumption of the pump due to excessive pipeline cost and increased system flow. Moreover, the same process of the system can not completely solve the problem of hydraulic imbalance of the pipe network. Sometimes in order to meet the flow requirements of the most unfavorable point of the system, it is necessary to increase the flow rate, resulting in waste of energy when the system is actually under low load. Therefore, the flow balance of the pipe network is very necessary for the energy saving of the system.
目前流量平衡装置的技术主要有两种， 一种可以称为自力式平衡装置， 另一种是手 动式平衡装置。  At present, there are two main technologies for the flow balance device, one can be called a self-balancing device, and the other is a manual balancing device.
自力式平衡装置是基于机械自力式原理， 基本上是通过测量流量阀两侧的压差， 利 用机械弹簧自力式压差装置， 自动控制流量阀芯通孔的压差恒定。这种平衡装置结构简 单，但是对弹黉的一致性要求很髙，弹簧的弹性模量对压差控制的稳定性有直接的影响， 否则， 难以保证压力平衡的一致性， 流量的控制精度不高。 而且阀芯通孔容易被循环水 携带杂质堵塞， 弹簧直接接触循环水， 老化快。  The self-balancing balance device is based on the principle of mechanical self-reliance. Basically, by measuring the pressure difference between the two sides of the flow valve, the mechanical spring self-operated differential pressure device is used to automatically control the pressure difference of the flow port through-hole. The balance device has a simple structure, but the consistency requirement for the magazine is very slim. The elastic modulus of the spring has a direct influence on the stability of the differential pressure control. Otherwise, it is difficult to ensure the consistency of the pressure balance, and the flow control accuracy is not high. Moreover, the spool through hole is easily blocked by the circulating water carrying impurities, and the spring directly contacts the circulating water, and the aging is fast.
手动式平衡装置是采用仪表平衡流量阀两侧的压差，根据压差与流量的特性关系曲 线， 通过调节阀门的开度使阀门两侧的压差值产生变化， 从而得到需要调定的对应流量 值。这种平衡装置需要在安装现场对每个流量阀进行逐个的人工测试工作， 现场需要专 人专用设备调试， 工作量大， 虽然流量控制比较精确， 但是无法获知整个中央空调系统 的水循环流量平衡程度。 发明内容  The manual balance device adopts the pressure difference between the two sides of the meter balance flow valve. According to the characteristic curve of the pressure difference and the flow rate, the pressure difference between the two sides of the valve is changed by adjusting the opening degree of the valve, thereby obtaining the corresponding need to be adjusted. Flow value. This balancing device requires manual testing of each flow valve at the installation site. The site requires special equipment debugging, and the workload is large. Although the flow control is relatively accurate, the water circulation flow balance of the entire central air conditioning system cannot be known. Summary of the invention
本发明的目的是克服现有技术的不足，提供一种设置容易且流量控制精确的高精度  The object of the present invention is to overcome the deficiencies of the prior art and provide a high precision with easy setting and accurate flow control.
本 流量自动平衡装置。 Ben Automatic flow balancing device.
本发明的技术解决方案是： 一种高精度流量自动平衡装置， 包括设置在管路上的由 电动执行器控制的流量平衡阀， 在同一管路上还设有与控制终端连接的流量传感器， 控 制终端分别接收各管路上流量传感器输入信号， 与预设值比较， 并输出控制信号至电动 执行器， 控制流量平衡阀调节该管路流量， 形成闭环控制回路。  The technical solution of the present invention is: A high-precision flow automatic balancing device, comprising a flow balance valve controlled by an electric actuator disposed on a pipeline, and a flow sensor connected to the control terminal on the same pipeline, the control terminal The flow sensor input signals on each pipeline are respectively received, compared with preset values, and the control signals are output to the electric actuator, and the flow balance valve is controlled to adjust the flow of the pipeline to form a closed loop control loop.
流量传感器不断检测管道内的流量信号，并传输至控制终端内，与预设流量值比较， 输出控制信号至电动执行器， 操作流量平衡阔的开度， 使该管道回路中流量满足预设值 的要求。在循环水系统的各个管道上分别装设流量传感器， 通过控制终端设置和调控分 配水量， 可以实现高精度的流量控制， 也无需人工现场调试检验， 减轻了工作量。  The flow sensor continuously detects the flow signal in the pipeline and transmits it to the control terminal. Compared with the preset flow value, the control signal is output to the electric actuator, and the operation flow balances the wide opening, so that the flow in the pipeline loop satisfies the preset value. Requirements. Flow sensors are installed on each pipe of the circulating water system. By controlling the terminal setting and regulating the amount of water dispensed, high-precision flow control can be realized, and manual on-site debugging and inspection is eliminated, which reduces the workload.
所述的控制终端连接网络模块， 可以通过网络实现远程设定和监控， 实现管网系统 的远程可视化流量检测和调节， 进一步提高操控的自动化程度。  The control terminal is connected to the network module, and can realize remote setting and monitoring through the network, realize remote visual flow detection and adjustment of the pipe network system, and further improve the automation degree of the control.
所述的控制终端设有连接管网水泵控制器的连接接口，在特定管道环路的流量平衡 阀全开的情况下， 控制终端可以输出信号， 使水泵控制器调控水泵的转速， 调节流量， 增加水力调节的方式和手段。  The control terminal is provided with a connection interface connecting the pipe network water pump controller. When the flow balance valve of the specific pipeline loop is fully opened, the control terminal can output a signal, so that the water pump controller regulates the rotation speed of the water pump and adjusts the flow rate. Increase the means and means of hydraulic adjustment.
所述的流量传感器为机械式流量传感器、 电磁式流量传感器、涡流式流量传感器或 者超声波式流量传感器， 所述的电动执行器为直行程结构或者角行程结构， 所述流量平 衡陶为调节阀或者球阀， 可以根据不同环路设计要求灵活选择合适的部件。  The flow sensor is a mechanical flow sensor, an electromagnetic flow sensor, a vortex flow sensor or an ultrasonic flow sensor, and the electric actuator is a straight stroke structure or a angular stroke structure, and the flow balance is a regulating valve or Ball valves allow flexible selection of the right components for different loop design requirements.
本发明的优点在于： 装置设置方便， 流量调节容易， 精度高， 可以实现远程的设定 和监控， 循环水系统整体管网监控到位， 特定环路的调节容易， 自动化程度高。 附图说明  The invention has the advantages that the device is convenient to set up, the flow adjustment is easy, the precision is high, the remote setting and monitoring can be realized, the overall pipe network monitoring of the circulating water system is in place, the adjustment of the specific loop is easy, and the degree of automation is high. DRAWINGS
附图 1为本发明实施例的部件连接示意图；  1 is a schematic view showing the connection of components according to an embodiment of the present invention;
1、 流量平衡阀， 2、 电动执行器， 3、 流量平衡阀， 4、 电动执行器， 5、 流量传感 器， 6、 流量传感器， 7、 控制终端， 8、 网络模块， 9、 水泵。 具体实施方式  1, flow balance valve, 2, electric actuator, 3, flow balance valve, 4, electric actuator, 5, flow sensor, 6, flow sensor, 7, control terminal, 8, network module, 9, water pump. detailed description
实施例：参阅图 1， 一种高精度流量自动平衡装置，用于中央空调的水循环系统中， 其中包括分别设置在两条循环水管路上的由电动执行器 2、 4控制的流量平衡阀 1、 3， 在每一条管路上还设有与控制终端 7连接的流量传感器 5、 6，控制终端 7分别接收各管 路上流量传感器 5、 6输入的实时流量信号， 与内部预设值比较， 并输出控制信号至各 电动执行器 2、 4， 分别控制相应管路上的流量平衡阀 1、 3调节该管路流量， 形成闭环 控制回路。 Embodiment: Referring to Fig. 1, a high-precision flow automatic balancing device is used in a water circulation system of a central air conditioner, which includes flow balance valves controlled by electric actuators 2, 4 respectively disposed on two circulating water pipes. 3. Each flow line is further provided with a flow sensor 5, 6 connected to the control terminal 7, and the control terminal 7 receives each tube separately. The real-time flow signal input by the flow sensor 5, 6 on the road is compared with the internal preset value, and the control signal is output to each electric actuator 2, 4, respectively, and the flow balance valve 1 and 3 on the corresponding pipeline are respectively controlled to adjust the flow of the pipeline. Form a closed loop control loop.
所述的控制终端 7连接网络模块 5， 可以通过网络实现远程设定和监控。 控制终端 7设有连接管网水泵控制器的连接接口， 在特定管道环路的流量平衡阀全开的情况下， 控制终端可以输出信号， 使水泵控制器调控水泵 6的转速， 调节流量， 增加水力调节的 方式和手段。  The control terminal 7 is connected to the network module 5, and can be remotely set and monitored through a network. The control terminal 7 is provided with a connection interface connecting the pipe network water pump controller. When the flow balance valve of the specific pipeline loop is fully opened, the control terminal can output a signal, so that the water pump controller regulates the rotation speed of the water pump 6, adjusts the flow rate, and increases The means and means of hydraulic regulation.
流量传感器不断检测管道内的流量信号，并传输至控制终端内，与预设流量值比较， 输出控制信号至电动执行器， 操作流量平衡阀的开度， 使该管道回路中流量满足预设值 的要求。在循环水系统的各个管道上分别装设流量传感器， 通过控制终端设置和调控分 配水量， 可以实现高精度的流量控制， 也无需人工现场调试检验， 减轻了工作量。  The flow sensor continuously detects the flow signal in the pipeline and transmits it to the control terminal, compares it with the preset flow value, outputs a control signal to the electric actuator, and operates the opening of the flow balance valve to make the flow in the pipeline loop meet the preset value. Requirements. Flow sensors are installed on each pipe of the circulating water system. By controlling the terminal setting and regulating the amount of water dispensed, high-precision flow control can be realized, and manual on-site debugging and inspection is eliminated, which reduces the workload.
流量传感器可以选用机械式流量传感器、 电磁式流量传感器、涡流式流量传感器或 者超声波式流量传感器， 电动执行器可选用直行程结构或者角行程结构， 流量平衡阀可 选用调节阀或者球阀， 根据不同环路设计要求灵活选择合适的部件。 上列详细说明是针对本发明之一可行实施例的具体说明，该实施例并非用以限制本 发明的专利范围， 凡未脱离本发明所为的等效实施或变更， 均应包含于本案的专利范围 中。  The flow sensor can be a mechanical flow sensor, an electromagnetic flow sensor, a vortex flow sensor or an ultrasonic flow sensor. The electric actuator can be configured with a straight stroke structure or a quarter stroke structure. The flow balance valve can be equipped with a regulating valve or a ball valve, depending on the ring. Road design requires flexible selection of the right components. The detailed description above is a detailed description of a possible embodiment of the present invention, which is not intended to limit the scope of the invention, and the equivalents and modifications of the present invention are included in the present invention. In the scope of patents.

Claims

权 利 要 求 、 一种髙精度流量自动平衡装置，包括设置在管路上的由电动执行器控制的流量平 衡阀， 其特征在于： 在同一管路上还设有与控制终端连接的流量传感器， 控制终 端分别接收各管路上流量传感器输入信号， 与预设值比较， 并输出控制信号至电 动执行器， 控制流量平衡阀调节管路流量， 形成闭环控制回路。 The invention relates to a 髙 precision flow automatic balancing device, comprising a flow balance valve controlled by an electric actuator disposed on a pipeline, wherein: a flow sensor connected to the control terminal is further disposed on the same pipeline, and the control terminal respectively Receiving the flow sensor input signal on each pipeline, comparing with the preset value, and outputting the control signal to the electric actuator, controlling the flow balance valve to adjust the pipeline flow to form a closed loop control loop.
、 根据权利要求 1所述的高精度流量自动平衡装置， 其特征在于： 所述的控制终端 连接网络模块。 The high-precision flow automatic balancing device according to claim 1, wherein: the control terminal is connected to the network module.
、 根据权利要求 1或 2所述的髙精度流量自动平衡装置， 其特征在于： 所述的控制 终端设有连接管网水泵控制器的连接接口。 The 髙 precision flow automatic balancing device according to claim 1 or 2, wherein: the control terminal is provided with a connection interface connecting the pipe network water pump controller.
、 根据权利要求 3所述的髙精度流量自动平衡装置， 其特征在于： 所述的流量传感 器为机械式流量传感器、 电磁式流量传感器、涡流式流量传感器或者超声波式流 量传感器。 The 髙 precision flow automatic balancing device according to claim 3, wherein the flow sensor is a mechanical flow sensor, an electromagnetic flow sensor, a vortex flow sensor or an ultrasonic flow sensor.
、 根据权利要求 3所述的高精度流量自动平衡装置， 其特征在于： 所述的电动执行 器为直行程结构或者角行程结构。 The high-precision flow automatic balancing device according to claim 3, wherein the electric actuator is a straight stroke structure or a corner stroke structure.
、 根据权利要求 3所述的高精度流量自动平衡装置， 其特征在于： 所述流量平衡阀 为调节阀或者球阀。 The high-precision flow automatic balancing device according to claim 3, wherein the flow balance valve is a regulating valve or a ball valve.
PCT/CN2007/003104 2007-09-27 2007-11-01 High precision automatic flow balancing device WO2009039685A1 (en)

Priority Applications (1)

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

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710030563.5 2007-09-27
CNA2007100305635A CN101398129A (en) 2007-09-27 2007-09-27 High precision flow automatic balance device

Publications (1)

Publication Number Publication Date
WO2009039685A1 true WO2009039685A1 (en) 2009-04-02

Family

ID=40510729

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/003104 WO2009039685A1 (en) 2007-09-27 2007-11-01 High precision automatic flow balancing device

Country Status (3)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102607146B (en) * 2012-04-06 2014-09-10 谭仲禧 Central air-conditioning system and control method thereof
CN103402214A (en) * 2013-07-17 2013-11-20 宁夏新航信息科技有限公司 Intelligent traffic monitoring method for mobile phone
CN104564629A (en) * 2013-10-09 2015-04-29 宁夏琪凯节能设备有限公司 Novel energy-saving dosing pump
CN104696706B (en) * 2015-01-20 2017-08-04 哈尔滨工业大学 The microfluid stream quantity regulating device driven based on air pressure
CN107588223A (en) * 2017-09-27 2018-01-16 安徽华斯源新能源科技有限公司 A kind of HVAC end wireless digital amount intelligent regulating valve
CN109631148A (en) * 2018-11-30 2019-04-16 黄维 A kind of hydraulic balancing regulation system and its adjustment method
CN113266693A (en) * 2021-04-09 2021-08-17 山东秉恬信息科技有限公司 Intelligent automatic thermodynamic balance valve of thing networking and heating system
CN113864271B (en) * 2021-09-30 2023-04-11 珠海松柏科技有限公司 Digital display type intelligent butterfly valve for precisely controlling flow and pipeline flow control system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0612127A (en) * 1992-06-26 1994-01-21 Matsushita Electric Ind Co Ltd Flow rate controller
EP0858018A1 (en) * 1997-02-06 1998-08-12 Georg Fischer Rohrleitungssysteme AG Method and device for flow control of liquids
JPH11184531A (en) * 1997-12-25 1999-07-09 Fujikoshi Mach Corp Flow control system for fluid supplier
CN2716761Y (en) * 2004-04-02 2005-08-10 天津力源永春科技发展有限公司 Intellectualized controller for heat exchanging machine set
CN2876486Y (en) * 2005-12-02 2007-03-07 沈新荣 Intelligent high precision dynamic flow balancing valve

Family Cites Families (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
US5660207A (en) * 1994-12-29 1997-08-26 Tylan General, Inc. Flow controller, parts of flow controller, and related method
IT1276413B1 (en) * 1995-06-06 1997-10-31 Eltek Spa DEVICE AND METHOD FOR REGULATION = FLOW 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
US6983661B2 (en) * 2003-05-15 2006-01-10 Endress + Hauser Flowtec Ag Electromagnetic flow sensor
US20050126635A1 (en) * 2003-12-16 2005-06-16 Sylvan Addink Smart flow anomaly detector
US7922667B2 (en) * 2004-06-04 2011-04-12 The Regents Of The University Of Michigan Electromagnetic flow sensor device
KR100653710B1 (en) * 2004-12-14 2006-12-04 삼성전자주식회사 Mass flow controller
US7921726B2 (en) * 2006-06-12 2011-04-12 Precision Pumping Systems, Inc. Fluid sensor with mechanical positional feedback
US8079383B2 (en) * 2006-12-07 2011-12-20 Mks Instruments, Inc. Controller gain scheduling for mass flow controllers
KR101428826B1 (en) * 2006-12-12 2014-08-08 가부시키가이샤 호리바 에스텍 Flow rate ratio control device
US7726201B2 (en) * 2007-08-22 2010-06-01 Invensys Systems, Inc. Triple redundancy vortex flowmeter system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0612127A (en) * 1992-06-26 1994-01-21 Matsushita Electric Ind Co Ltd Flow rate controller
EP0858018A1 (en) * 1997-02-06 1998-08-12 Georg Fischer Rohrleitungssysteme AG Method and device for flow control of liquids
JPH11184531A (en) * 1997-12-25 1999-07-09 Fujikoshi Mach Corp Flow control system for fluid supplier
CN2716761Y (en) * 2004-04-02 2005-08-10 天津力源永春科技发展有限公司 Intellectualized controller for heat exchanging machine set
CN2876486Y (en) * 2005-12-02 2007-03-07 沈新荣 Intelligent high precision dynamic flow balancing valve

Also Published As

Publication number Publication date
US20100108293A1 (en) 2010-05-06
CN101398129A (en) 2009-04-01

Similar Documents

Publication Publication Date Title
WO2009039685A1 (en) High precision automatic flow balancing device
US20130240045A1 (en) Method for Determining a Fluid Flow Rate With a Fluid Control Valve
JP5646601B2 (en) Constant flow automatic controller considering heating load
CN102124417B (en) Flow control system
US20090165866A1 (en) Valve With Built-In Sensor
CN101782260A (en) Optimal control method and device for water system of air conditioning
CN102705956A (en) Optimal control device and method for primary pump variable flow system
KR20130040092A (en) Method for controlling heating system
CN103018047A (en) Engine rig test device and engine water temperature control device
CN105626948B (en) Balanced valve
CN2916447Y (en) Divisional, timing, and temperature-based hot water supply control system
CN201476682U (en) Dynamic flow temperature control system of heat exchanger unit
CN109442817A (en) A kind of plant area's chilled water water supply network hydraulic equilibrium system
CN201812209U (en) Intelligent flow balance device
CN209801590U (en) User distributed heat supply energy-saving device
KR20160074935A (en) Active heating control system using a flow sensor
CN202485100U (en) Balancing device for water distributor and water collector in heating system
RU98542U1 (en) ENERGY SAVING AUTOMATED HEAT ITEM
CN204611902U (en) A kind of heating system adjusting device
CN105626953B (en) Regulating valve
CN201348337Y (en) Balancing throttling device in transmission and distribution process of air-conditioning water system
CN205331583U (en) Regulating valve
CN207280009U (en) A kind of new Regional Energy secondary pumping system
CN201318504Y (en) Linear temperature control valve
CN105509120B (en) The heating unit and control method in multi partition greenhouse

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07816717

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 12451826

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 16/08/10)

122 Ep: pct application non-entry in european phase

Ref document number: 07816717

Country of ref document: EP

Kind code of ref document: A1