CN101074734A - Electric flow self-balancing adjusting valve and method - Google Patents
Electric flow self-balancing adjusting valve and method Download PDFInfo
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- CN101074734A CN101074734A CN 200710057678 CN200710057678A CN101074734A CN 101074734 A CN101074734 A CN 101074734A CN 200710057678 CN200710057678 CN 200710057678 CN 200710057678 A CN200710057678 A CN 200710057678A CN 101074734 A CN101074734 A CN 101074734A
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Abstract
The invention provides an electronic self-equilibrating flow electric control valve and its adjusting method, this electronic self-equilibrating flow electric control valve includes: flow meter, differential pressure transducer, flow controller, temperature controller, and temperature transducer. Its adjusting method is double-make circle control adjusting, the process as follow: (1) the stage of receiving standard flow data signal from outside feedback control return circuit. (2) The stage of detecting real-time flow data from inside feedback control return circuit. (3)The stage of comparing and calculating standard flow data and real-time flow data. (4) the stage of controlling and adjusting jaw opening of electronic bi-pass control valve. The advantages of this invention are: (1)simple structure (2)easy manufacture (3)rebuilt in original inside structure of the electronic bi-pass control valve is not necessary, only need to make slight modification on the original electronic bi-pass control valve. (4) maintain the flows that pass the electronic bi-pass control valve constantly when system pressure oscillations cause variation in discharge, thus avoid temperature adjustment delay.
Description
Technical field
What the present invention relates to is to be used for temperature controlled electronic two-way control valve in air-conditioning system and the heating system, particularly be electronic formula flow quantity self-regulation electromotive damper valve and the regulating method thereof by electronic component control in the temperature regulation process.
Background technique
At present; in air-conditioning system and heating system; install the branch road or the terminal heat-exchange apparatus that are used for temperature controlled electronic two-way control valve additional; through regular meeting since some other user or branch road change when regulating at cooling and heating load; cause that system resistance changes, pressure surge; the flow that causes flowing through this electronic two-way control valve changes; thereby make its flow that can't maintain setting temperature control operation down; cause the phase mutual interference of flow in each branch road between system or the terminal heat-exchange apparatus, cause whole system dynamically to be lacked of proper care.
In the prior art, the above-mentioned dynamic detuning phenomena that occurs for air-conditioning system and heating system has following two kinds of solutions usually.First method installs dynamic flow balance valve additional before branch road or terminal heat-exchange apparatus, make dynamic flow balance valve be issued to the flow of setting in the situation of system pressure fluctuation.But this kind method is not suitable for the continuous adjusting of temperature.Second method installs additional before branch road or terminal heat-exchange apparatus and can keep before and after it pressure reduction and stablize constant dynamic balance motor-driven modulating valve, and branch road or end-equipment are in the stable pressure reduction environment, keeps the flow smooth running.But this kind method needs the particular usage valve body structure, and the processing and fabricating cost is higher.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, provide a kind of simple in structure, need not change the electronic two-way control valve body of prior art internal structure, adjusting by air-conditioning system and heating system branch road or terminal heat-exchange apparatus temperature, control the aperture of electronic two-way control valve, promptly, after temperature regulation reaches setting temperature, with this moment the flow by electronic two-way control valve as reference value, after this constantly detect and compare by the flow of electronic two-way control valve and with reference value, control makes it maintain flow standard value constant a kind of electronic formula flow quantity self-regulation electromotive damper valve and regulating method thereof by regulating the aperture of electronic two-way control valve.
The technological scheme that solves the problems of the technologies described above is:
A kind of electronic formula flow quantity self-regulation electromotive damper valve, this electronic formula flow quantity self-regulation electromotive damper valve comprises: electronic two-way control valve; Flowmeter; Differential pressure pickup; Flow dontroller; Temperature controller; Temperature transducer, flowmeter are installed on the system pipeline of electronic two-way control valve entry end; The terminal heat-exchange apparatus of the outlet termination of electronic two-way control valve; The high pressure pressure tappings of differential pressure pickup connects the high pressure of flowmeter and surveys pipe, and the low pressure pressure tappings of differential pressure pickup connects the low pressure of flowmeter and surveys pipe; The signal output part of differential pressure pickup connects the signal input part of flow dontroller, the output terminal of another signal input part jointing temp controller of flow dontroller, the temperature transducer of the input end welding system end of temperature controller; The signal output part of flow dontroller connects the control circuit that the electronic two-way control valve inner valve stem of control opens and closes.
A kind of regulating method of electronic formula flow quantity self-regulation electromotive damper valve, described regulating method are two closed loop control regulating methods, and this pair closed loop control regulating method carries out as follows:
1.. obtain the normal flow value signal stage from the external feedback control loop: form the external feedback control loop by temperature controller and temperature transducer and electronic two-way control valve, control the temperature of terminal heat-exchange apparatus, when temperature regulation arrived setting temperature, temperature controller sent the flow that passes through electronic two-way control valve under this temperature correspondence to flow dontroller as the normal flow value signal;
2.. feedback control circuit detects the real-time flow data stage internally: forms an internal feedback control loop by flow dontroller, flowmeter, differential pressure pickup, electronic two-way control valve, flow dontroller by flowmeter, differential pressure pickup constantly the flow value of detection by electronic two-way control valve as real-time flow data;
3.. normal stream value and real-time flow data be calculation stages relatively: flow dontroller compares computing with above-mentioned normal flow value signal and real-time flow data;
4.. the electronic two-way control valve aperture stage is adjusted in control: after above-mentioned flow dontroller comparison operation, the output control signal is given the control circuit of electronic two-way control valve, the valve rod that the control circuit of electronic two-way control valve is controlled electronic two-way control valve moves up and down, change the aperture of electronic two-way control valve, thereby the given normal stream value of holding temperature controller is constant.
A kind of electronic formula flow quantity self-regulation electromotive damper valve, this electronic formula flow quantity self-regulation electromotive damper valve comprises: electronic two-way control valve; Flowmeter; Differential pressure pickup; The temperature flow controller; Temperature transducer, flowmeter are installed on the system pipeline of electronic two-way control valve entry end; The terminal heat-exchange apparatus of the outlet termination of electronic two-way control valve; The high pressure pressure tappings of differential pressure pickup connects the high pressure of flowmeter and surveys pipe, and the low pressure pressure tappings of differential pressure pickup connects the low pressure of flowmeter and surveys pipe; The signal input part of the signal output part jointing temp flow dontroller of differential pressure pickup, the temperature transducer of another signal input part welding system end of temperature flow controller; The signal output part of temperature flow controller connects the control circuit that the electronic two-way control valve inner valve stem of control opens and closes.
A kind of regulating method of electronic formula flow quantity self-regulation electromotive damper valve, described regulating method are two closed loop control regulating methods, and this pair closed loop control regulating method carries out as follows:
1.. gather end-equipment temperature and set temperature value comparison calculation stages from the external feedback control loop: form the external feedback control loop by temperature flow controller, temperature transducer and electronic two-way control valve, the temperature flow controller temperature value of setting in the temperature of gathering terminal heat-exchange apparatus and the temperature flow controller that links to each other with temperature transducer compares, calculates;
2.. the electronic two-way control valve aperture stage is adjusted in control: after relatively calculating by the temperature flow controller, the output control signal is given the control circuit of electronic two-way control valve, the valve rod that control circuit is controlled electronic two-way control valve moves up and down, change the aperture of electronic two-way control valve, the temperature value of setting in the holding temperature flow dontroller is constant;
3.. settle the standard the flow value stage: by calculating, the flow value of the electronic two-way control valve with the temperature value of keeping setting when constant is as the normal stream value under this setting temperature to the signal of differential pressure pickup collection input for the temperature flow controller;
4.. feedback control circuit detects the real-time flow data stage internally: form an internal feedback control loop by temperature flow controller, flowmeter, differential pressure pickup, electronic two-way control valve, the temperature flow controller is a real-time flow data by the flow value that flowmeter, differential pressure pickup constantly detect by electronic two-way control valve;
5.. normal stream value and real-time flow data be calculation stages relatively: the temperature flow controller is constantly gathered the signal of differential pressure pickup, calculates the real-time flow data by electronic two-way control valve, compares, calculates according to normal stream value and real-time flow data;
6.. adjust the electronic two-way control valve aperture stage: after the comparison operation of temperature flow controller, the output control signal is given the control circuit of electronic two-way control valve, control circuit control valve rod moves up and down, change the aperture of electronic two-way control valve, thereby the given normal stream value of holding temperature flow dontroller is constant.
The invention has the beneficial effects as follows: electronic formula flow quantity self-regulation electromotive damper valve provided by the invention is simple in structure, be easy to make, need not transform original electronic two-way control valve body internal structure, only must be on the basis of original electronic two-way control valve change slightly and promptly can be made into; Can be when the system pressure fluctuation cause changes in flow rate, the flow of keeping this electronic two-way control valve of flowing through is constant, the generation of having avoided the temperature regulation retardation phenomenon to a certain degree.
Description of drawings
Fig. 1 is that flow dontroller of the present invention is a V-type cone flow meter structure connection diagram;
Fig. 2 is that flow dontroller of the present invention is an Annular Round Model PFB structure connection diagram;
Fig. 3 is that temperature flow controller of the present invention is a V-type cone flow meter structure connection diagram;
Fig. 4 is that temperature flow controller of the present invention is an Annular Round Model PFB structure connection diagram;
Fig. 5 is the structure connection block diagram that flow dontroller of the present invention is controlled the inner actuator of electronic two-way control valve;
Fig. 6 is the structure connection block diagram that temperature flow controller of the present invention is controlled the inner actuator of electronic two-way control valve.
Main sequence number explanation in the＜accompanying drawing 〉
1: electronic two-way control valve 1a: valve rod 2a: flow dontroller
2b: temperature flow controller 3a:V type cone flow meter 3b: Annular Round Model PFB
4: differential pressure pickup 5: system pipeline 6: terminal heat-exchange apparatus
7: the 7a of actuator: motor 7b: driving mechanism
8: cone 9: high pressure is surveyed pipe 10: low pressure is surveyed pipe
11: high pressure pressure tappings 12: low pressure pressure tappings 13,14: lead
15: temperature transducer 16a: signal input part 16b: signal input part
17,18,19: flange 20: normal flow value signal 21: temperature controller
22`, 22: output control signal 23: control circuit 24: test rod
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is that flow dontroller of the present invention is a V-type cone flow meter structure connection diagram; Fig. 2 is that flow dontroller of the present invention is an Annular Round Model PFB structure connection diagram; Fig. 5 is the structure connection block diagram that flow dontroller of the present invention is controlled the inner actuator of electronic two-way control valve.
As Fig. 1, Fig. 2, shown in Figure 5, the invention provides a kind of electronic formula flow quantity self-regulation electromotive damper valve, this electronic formula flow quantity self-regulation electromotive damper valve comprises: electronic two-way control valve 1; Flowmeter 3; Differential pressure pickup 4; Flow dontroller 2a; Temperature controller 21; Temperature transducer 15, flowmeter 3 are installed on the system pipeline 5 of electronic two-way control valve 1 entry end; The terminal heat-exchange apparatus 6 of the outlet termination of electronic two-way control valve 1; The high pressure pressure tappings 11 of differential pressure pickup 4 connects the high pressure of flowmeter 3 and surveys pipe 9, and the low pressure pressure tappings 12 of differential pressure pickup 4 connects the low pressure of flowmeter 3 and surveys pipe 10; The signal output part of differential pressure pickup 4 meets the signal input part 16b of flow dontroller 2a, the output terminal of another signal input part 16a jointing temp controller 21 of flow dontroller 2a, the temperature transducer 15 of the input end welding system end of temperature controller 21; The signal output part 22 of flow dontroller 2a connects the control circuit 23 that the electronic two-way control valve 1 inner valve stem 1a of control opens and closes.
As shown in Figure 1, described flowmeter 3 is V-type cone flow meter 3a, the entry end welding system pipeline 5 of this V-type cone flow meter 3a, the entry end of the electronic two-way control valve 1 of its outlet termination, the high pressure pressure tappings 11 of differential pressure pickup 4 connects the high pressure of V-type cone flow meter 3a and surveys pipe 9, and the low pressure pressure tappings 12 of differential pressure pickup 4 connects the low pressure of V-type cone flow meter 3a and surveys pipe 10.
Above-mentioned V-type cone flow meter 3a is a kind of instrument that detects flow that can buy on the market, and the structure of this V-type cone flow meter 3a is normally by measuring the differential pressure type flow meter of throttle element both sides pressure reduction with reflection flow size.Described throttle element is a cone 8 that is suspended on pipeline central authorities, and high pressure is surveyed pipe 9 and taken from cone 8 front end fluids, and low pressure is surveyed pipe 10 and taken from back cone 8 central authorities, and the square root of pressure differential deltap P is directly proportional with flow between its height, and its pressure drag loss is little.The entry end of V-type cone flow meter 3a is connected with system pipeline 5 by flange 17, its outlet end be connected with the entry end of electronic two-way control valve 1 by flange 19 or directly be cast as one, the outlet end of electronic two-way control valve 1 is connected by flange 18 with branch road or terminal heat-exchange apparatus 6.
The high pressure pressure tappings 11 of above-mentioned differential pressure pickup 4 is surveyed pipe 9 with the high pressure of V-type cone flow meter 3a and is linked to each other; The low pressure pressure tappings 12 of differential pressure pickup 4 is surveyed pipe 10 with the low pressure of V-type cone flow meter 3a and is linked to each other, and differential pressure pickup 4 detects the pressure difference signal of V-type cone flow meter 3a and is converted into electrical signal and links to each other by the signal input part 16b of lead 13 with flow dontroller 2a (perhaps the back will illustrate flow temperature controller 2b).The actuator 7 of flow dontroller 2a (perhaps the back will illustrate flow temperature controller 2b) and electronic two-way control valve 1 can be placed in the device for saving the space, differential pressure pickup 4 and V-type cone flow meter 3a are fixed into one.
As shown in Figure 2, described flowmeter 3 is Annular Round Model PFB 3b, and this Annular Round Model PFB 3b is installed on the system pipeline 5, and system pipeline 5 connects the entry end of electronic two-way control valve 1; The high pressure pressure tappings 11 of differential pressure pickup 4 connects the high pressure of Annular Round Model PFB 3b and surveys pipe 9, and the low pressure pressure tappings 12 of differential pressure pickup 4 connects the low pressure of Annular Round Model PFB 3b and surveys pipe 10.
Above-mentioned Annular Round Model PFB 3b is a kind of instrument that detects flow that can buy on the market, the structure of this Annular Round Model PFB 3b is made up of test rod 24, stagnation pressure pressure tap 25 and static pressure pressure tap 26, it is vertical with tubular axis that it crosses pipe interior, on test rod 24 fluoran stream surfaces, be provided with a plurality of stagnation pressure pressure taps 25, static pressure pressure tap 26 is arranged on its back side, survey pipe 10 by high pressure survey pipe 9 and low pressure respectively and draw,, calculate the flow of the pipeline of flowing through according to the differential pressure value of stagnation pressure and static pressure.This Annular Round Model PFB 3b can be connected on the system pipeline 5 by welding or pipe collar 27.
The high pressure pressure tappings 11 of above-mentioned gap sensor 4 is surveyed pipe 9 with the high pressure of Annular Round Model PFB 3b and is linked to each other; The low pressure pressure tappings 12 of differential pressure pickup 4 is surveyed pipe 10 with the low pressure of Annular Round Model PFB 3b and is linked to each other, and differential pressure pickup 4 detects the pressure difference signal of Annular Round Model PFB 3b and is converted into electrical signal and links to each other by the signal input part 16b of lead 13 with flow dontroller 2a (perhaps the back will illustrate flow temperature controller 2b).The actuator 7 of flow dontroller 2a (perhaps the back will illustrate flow temperature controller 2b) and electronic two-way control valve 1 can be placed in the device for saving the space, differential pressure pickup 4 and Annular Round Model PFB 3b are fixed into one.
As shown in Figure 5, described control circuit 23 is arranged in the actuator 7 in the electronic two-way control valve 1, and this actuator 7 comprises: control circuit 23 motor 7a, driving mechanism 7b, valve rod 1a; This control circuit 23 connects motor 7a, and this motor 7a connects driving mechanism 7b, and driving mechanism 7b connects and actuate valve stem 1a opens and closes.
A kind of regulating method of electronic formula flow quantity self-regulation electromotive damper valve, described regulating method are two closed loop control regulating methods, and this pair closed loop control regulating method carries out as follows:
1.. obtain the normal flow value signal stage from the external feedback control loop: form the external feedback control loop by temperature controller 21 and temperature transducer 15 and electronic two-way control valve 1, control the temperature of terminal heat-exchange apparatus 6, when temperature regulation arrived setting temperature, temperature controller 21 sent the flow that passes through electronic two-way control valve 1 under this temperature correspondence to flow dontroller 2a as normal flow value signal 20;
2.. feedback control circuit detects the real-time flow data stage internally: forms an internal feedback control loop by flow dontroller 2a, flowmeter 3, differential pressure pickup 4, electronic two-way control valve 1, flow dontroller 2a by flowmeter 3, differential pressure pickup 4 constantly the flow value of detections by electronic two-way control valve 1 as real-time flow data;
3.. normal stream value and real-time flow data be calculation stages relatively: flow dontroller 2a compares computing with above-mentioned normal flow value signal 20 with real-time flow data;
4.. the electronic two-way control valve aperture stage is adjusted in control: after above-mentioned flow dontroller 2a comparison operation, output control signal 22 is given the control circuit 23 of electronic two-way control valve 1, the valve rod 1a of the electronic two-way control valve 1 of control circuit 23 controls of electronic two-way control valve 1 moves up and down, change the aperture of electronic two-way control valve 1, thereby holding temperature controller 21 given normal stream values are constant.
Above-mentioned flow dontroller 2a obtains carrying out the adjusted normal flow value signal 20 of temperature relatively by the real-time flow data of electronic two-way control valve 1 and with temperature controller 21 by the calculated signals of the differential pressure pickup 4 of input, both differences are carried out pid calculation in flow dontroller 2a, output control signal 22 is given the input end of the control circuit 23 of the actuator 7 in the electronic two-way control valve 1, make motor 7a by control circuit 23, driving mechanism 7b action, driving valve rod 1a moves up and down, change the aperture of electronic two-way control valve 1, thereby the given flow value of holding temperature controller 21 is constant.Therefore, for this pair of closed-loop adjustment method, the temperature regulation of temperature controller 21 plays a major role, when the temperature regulation balance, flow dontroller 2a carries out Flow-rate adjustment and helps out, when the temperature regulation, eliminate the influence of pressure, flowed fluctuation to guarantee electronic formula flow quantity self-regulation electromotive damper valve.
The present invention also provides following another embodiment.
Fig. 3 is that temperature flow controller of the present invention is a V-type cone flow meter structure connection diagram; Fig. 4 is that temperature flow controller of the present invention is an Annular Round Model PFB structure connection diagram; Fig. 6 is the structure connection block diagram that temperature flow controller of the present invention is controlled the inner actuator of electronic two-way control valve.
As Fig. 3, Fig. 4, shown in Figure 6, the invention provides a kind of electronic formula flow quantity self-regulation electromotive damper valve, this electronic formula flow quantity self-regulation electromotive damper valve comprises: electronic two-way control valve 1; Flowmeter 3; Differential pressure pickup 4; Temperature flow controller 2b; Temperature transducer 15, described flowmeter 3 are installed on the system pipeline 5 of electronic two-way control valve 1 entry end; The terminal heat-exchange apparatus 6 of the outlet termination of electronic two-way control valve 1; The high pressure pressure tappings 11 of differential pressure pickup 4 connects the high pressure of flowmeter 3 and surveys pipe 9, and the low pressure pressure tappings 12 of differential pressure pickup 4 connects the low pressure of flowmeter 3 and surveys pipe 10; The signal input part 16b of the signal output part jointing temp flow dontroller 2b of differential pressure pickup 4, the temperature transducer 15 of another signal input part 16a welding system end of temperature flow controller 2b; The signal output part 22` of temperature flow controller 2b connects the control circuit 23 that the electronic two-way control valve 1 inner valve stem 1a of control opens and closes.
As shown in Figure 3, described flowmeter 3 is V-type cone flow meter 3a, the entry end welding system pipeline 5 of V-type cone flow meter 3a, the entry end of the electronic two-way control valve 1 of its outlet termination, the high pressure pressure tappings 11 of differential pressure pickup 4 connects the high pressure of V-type cone flow meter 3a and surveys pipe 9, and the low pressure pressure tappings 12 of differential pressure pickup 4 connects the low pressure of V-type cone flow meter 3a and surveys pipe 10.
As shown in Figure 4, described flowmeter 3 is Annular Round Model PFB 3b, Annular Round Model PFB 3b is installed on the system pipeline 5, system pipeline 5 connects the entry end of electronic two-way control valve 1, the high pressure pressure tappings 11 of differential pressure pickup 4 connects the high pressure of Annular Round Model PFB 3b and surveys pipe 9, and the low pressure pressure tappings 12 of differential pressure pickup 4 connects the low pressure of Annular Round Model PFB 3b and surveys pipe 10.
As shown in Figure 6, described control circuit 23 is arranged in the actuator 7 in the electronic two-way control valve 1, and this actuator 7 comprises: control circuit 23, motor 7a, driving mechanism 7b, valve rod 1a; This control circuit 23 connects motor 7a, and motor 7a connects driving mechanism 7b, and driving mechanism 7b connects and actuate valve stem 1a opens and closes.
In the present embodiment, to last one content of implementing same structure, simple or omit explanation at this.
The embodiment of the invention provides a kind of regulating method of electronic formula flow quantity self-regulation electromotive damper valve, and described regulating method is two closed loop control regulating methods, and this pair closed loop control regulating method carries out as follows:
1.. gather end-equipment temperature and set temperature value comparison calculation stages from the external feedback control loop: form the external feedback control loop by temperature flow controller 2b, temperature transducer 15 and electronic two-way control valve 1, the temperature flow controller 2b temperature value of setting among the temperature of gathering terminal heat-exchange apparatus 6 and the temperature flow controller 2b that links to each other with temperature transducer 15 compares, calculates;
2.. the electronic two-way control valve aperture stage is adjusted in control: after relatively calculating by temperature flow controller 2b, output control signal 22` gives the control circuit 23 of electronic two-way control valve 1, the valve rod 1a of the electronic two-way control valve 1 of control circuit 23 controls moves up and down, change the aperture of electronic two-way control valve 1, the temperature value of setting among the holding temperature flow dontroller 2b is constant;
3.. settle the standard the flow value stage: temperature flow controller 2b gathers input to differential pressure pickup 4 signal is by calculating, and the flow value of the electronic two-way control valve 1 with the temperature value of keeping setting when constant is as the normal stream value under this setting temperature;
4.. feedback control circuit detects the real-time flow data stage internally: forms an internal feedback control loop by temperature flow controller 2b, flowmeter 3, differential pressure pickup 4, electronic two-way control valve 1, temperature flow controller 2b by flowmeter 3, differential pressure pickup 4 constantly the flow value of detections by electronic two-way control valve 1 as real-time flow data;
5.. normal stream value and real-time flow data be calculation stages relatively: temperature flow controller 2b constantly gathers the signal of differential pressure pickup 4, calculate real-time flow data, compare, calculate according to normal stream value and real-time flow data by electronic two-way control valve 1;
6.. adjust the electronic two-way control valve aperture stage: after temperature flow controller 2b comparison operation, output control signal 22` gives the control circuit 23 of electronic two-way control valve 1, control circuit 23 control valve rod 1a move up and down, change the aperture of electronic two-way control valve 1, thereby the given normal stream value of holding temperature flow dontroller 2b is constant.
As Fig. 3, shown in Figure 4, the temperature that the embodiment of the invention will be controlled by the terminal heat-exchange apparatus 6 of temperature transducer 15 detection systems, temperature flow controller 2b compares by the temperature signal of lead 14 collecting temperature sensors 15 and with the temperature value of setting in temperature flow controller 2b, when having deviation then passing ratio integral differential operation output control signal 22` give the input end of the control circuit 23 of the actuator 7 in the electronic two-way control valve 1, control circuit 23 by actuator 7 makes motor 7a, driving mechanism 7b action, driving valve rod 1a moves up and down, change the aperture of electronic two-way control valve 1, the temperature value of setting among the holding temperature flow dontroller 2b is constant, thereby makes branch road or terminal heat-exchange apparatus 6 meet the requirements of set temperature value.At this moment, temperature flow controller 2b gathers the signal of differential pressure pickup 4 by lead 13, calculate this moment by the flow value of electronic two-way control valve 1 and with it as the normal stream value under this setting temperature, after this pipe-line system flow may fluctuate, flow by electronic two-way control valve 1 is changed, temperature flow controller 2b constantly gathers the signal of differential pressure pickup 4, calculate real-time flow data by electronic two-way control valve 1, compare according to normal stream value and real-time flow data, passing ratio integral differential operation output control signal, change the aperture of electronic two-way control valve 1, the normal stream value of keeping under this setting temperature is constant.Therefore for this pair of closed-loop adjustment method, the temperature regulation of temperature flow controller 2b plays a major role, when the temperature regulation balance, temperature flow controller 2b carries out Flow-rate adjustment and helps out, when the temperature regulation, eliminate the influence of pressure, flowed fluctuation to guarantee electronic formula flow quantity self-regulation electromotive damper valve.
Claims (10)
1. electronic formula flow quantity self-regulation electromotive damper valve, this electronic formula flow quantity self-regulation electromotive damper valve comprises: electronic two-way control valve (1); Flowmeter (3); Differential pressure pickup (4); Flow dontroller (2a); Temperature controller (21); Temperature transducer (15) is characterized in that, flowmeter (3) is installed on the system pipeline (5) of electronic two-way control valve (1) entry end; The terminal heat-exchange apparatus (6) of the outlet termination of electronic two-way control valve (1); The high pressure pressure tappings (11) of differential pressure pickup (4) connects the high pressure of flowmeter (3) and surveys pipe (9), and the low pressure pressure tappings (12) of differential pressure pickup (4) connects the low pressure of flowmeter (3) and surveys pipe (10); The signal output part of differential pressure pickup (4) connects the signal input part (16b) of flow dontroller (2a), the output terminal of another signal input part (16a) jointing temp controller (21) of flow dontroller (2a), the temperature transducer (15) of the input end welding system end of temperature controller (21); The signal output part (22) of flow dontroller (2a) connects the control circuit (23) that control electronic two-way control valve (1) inner valve stem (1a) opens and closes.
2. according to electronic formula flow quantity self-regulation electromotive damper valve described in the claim 1, it is characterized in that, described flowmeter (3) is V-type cone flow meter (3a), the entry end welding system pipeline (5) of this V-type cone flow meter (3a), the entry end of its outlet electronic two-way control valve of termination (1), the high pressure pressure tappings (11) of differential pressure pickup (4) connects the high pressure of V-type cone flow meter (3a) and surveys pipe (9), and the low pressure pressure tappings (12) of differential pressure pickup (4) connects the low pressure of V-type cone flow meter (3a) and surveys pipe (10).
3 according to electronic formula flow quantity self-regulation electromotive damper valve described in the claim 1, it is characterized in that, described flowmeter (3) is Annular Round Model PFB (3b), and this Annular Round Model PFB (3b) is installed on the system pipeline (5), and system pipeline (5) connects the entry end of electronic two-way control valve (1); The high pressure pressure tappings (11) of differential pressure pickup (4) connects the high pressure of Annular Round Model PFB (3b) and surveys pipe (9), and the low pressure pressure tappings (12) of differential pressure pickup (4) connects the low pressure of Annular Round Model PFB (3b) and surveys pipe (10).
4. according to electronic formula flow quantity self-regulation electromotive damper valve described in the claim 1, it is characterized in that, described control circuit (23) is arranged in the interior actuator (7) of electronic two-way control valve (1), and this actuator (7) comprising: control circuit (23), motor (7a), driving mechanism (7b), valve rod (1a); This control circuit (23) connects motor (7a), and motor (7a) connects driving mechanism (7b), and driving mechanism (7b) connects and actuate valve stem (1a) opens and closes.
5. the regulating method according to electronic formula flow quantity self-regulation electromotive damper valve described in the claim 1 is characterized in that, described regulating method is two closed loop control regulating methods, and this pair closed loop control regulating method carries out as follows:
1.. obtain the normal flow value signal stage from the external feedback control loop: form the external feedback control loop by temperature controller (21) and temperature transducer (15) and electronic two-way control valve (1), control the temperature of terminal heat-exchange apparatus (6), when temperature regulation reached set temperature value, temperature controller (21) sent the flow that passes through electronic two-way control valve (1) under this temperature correspondence to flow dontroller (2a) as normal flow value signal (20);
2.. feedback control circuit detects the real-time flow data stage internally: form an internal feedback control loop by flow dontroller (2a), flowmeter (3), differential pressure pickup (4), electronic two-way control valve (1), flow dontroller (2a) is a real-time flow data by the flow value that flowmeter (3), differential pressure pickup (4) constantly detect by electronic two-way control valve (1);
3.. normal stream value and real-time flow data be calculation stages relatively: flow dontroller (2a) compares computing with above-mentioned normal flow value signal (20) and real-time flow data;
4.. the electronic two-way control valve aperture stage is adjusted in control: after above-mentioned flow dontroller (2a) comparison operation, output control signal (22) is given the control circuit (23) of electronic two-way control valve (1), the valve rod (1a) that the control circuit (23) of electronic two-way control valve (1) is controlled electronic two-way control valve (1) moves up and down, change the aperture of electronic two-way control valve (1), thereby the given normal stream value of holding temperature controller (21) is constant.
6. electronic formula flow quantity self-regulation electromotive damper valve, this electronic formula flow quantity self-regulation electromotive damper valve comprises: electronic two-way control valve (1); Flowmeter (3); Differential pressure pickup (4); Temperature flow controller (2b); Temperature transducer (15) is characterized in that, flowmeter (3) is installed on the system pipeline (5) of electronic two-way control valve (1) entry end; The terminal heat-exchange apparatus (6) of the outlet termination of electronic two-way control valve (1); The high pressure pressure tappings (11) of differential pressure pickup (4) connects the high pressure of flowmeter (3) and surveys pipe (9), and the low pressure pressure tappings (12) of differential pressure pickup (4) connects the low pressure of flowmeter (3) and surveys pipe (10); The signal input part (16b) of the signal output part jointing temp flow dontroller (2b) of differential pressure pickup (4), the temperature transducer (15) of another signal input part (16a) welding system end of temperature flow controller (2b); The signal output part (22`) of temperature flow controller (2b) connects the control circuit (23) that control electronic two-way control valve (1) inner valve stem (1a) opens and closes.
7. according to electronic formula flow quantity self-regulation electromotive damper valve described in the claim 6, it is characterized in that, described flowmeter (3) is V-type cone flow meter (3a), the entry end welding system pipeline (5) of V-type cone flow meter (3a), the entry end of its outlet electronic two-way control valve of termination (1), the high pressure pressure tappings (11) of differential pressure pickup (4) connects the high pressure of V-type cone flow meter (3a) and surveys pipe (9), and the low pressure pressure tappings (12) of differential pressure pickup (4) connects the low pressure of V-type cone flow meter (3a) and surveys pipe (10).
8. according to electronic formula flow quantity self-regulation electromotive damper valve described in the claim 6, it is characterized in that, described flowmeter (3) is Annular Round Model PFB (3b), Annular Round Model PFB (3b) is installed on the system pipeline (5), system pipeline (5) connects the entry end of electronic two-way control valve (1), the high pressure pressure tappings (11) of differential pressure pickup (4) connects the high pressure of Annular Round Model PFB (3b) and surveys pipe (9), and the low pressure pressure tappings (12) of differential pressure pickup (4) connects the low pressure of Annular Round Model PFB (3b) and surveys pipe (10).
9. according to electronic formula flow quantity self-regulation electromotive damper valve described in the claim 6, it is characterized in that, described control circuit (23) is arranged in the interior actuator (7) of electronic two-way control valve (1), and this actuator (7) comprising: control circuit (23), motor (7a), driving mechanism (7b), valve rod (1a); This control circuit (23) connects motor (7a), and motor (7a) connects driving mechanism (7b), and driving mechanism (7b) connects and actuate valve stem (1a) opens and closes.
10. the regulating method according to electronic formula flow quantity self-regulation electromotive damper valve described in the claim 6 is characterized in that, described regulating method is two closed loop control regulating methods, and this pair closed loop control regulating method carries out as follows:
1.. gather relatively calculation stages of end-equipment temperature and set temperature value from the external feedback control loop: forms the external feedback control loop by temperature flow controller (2b), temperature transducer (15) and electronic two-way control valve (1), link to each other with temperature transducer (15) temperature of the terminal heat-exchange apparatus of collection (6) and the temperature value of the middle setting of temperature flow controller (2b) of temperature flow controller (2b) compares, calculates;
2.. the electronic two-way control valve aperture stage is adjusted in control: after relatively calculating by temperature flow controller (2b), output control signal (22`) is given the control circuit (23) of electronic two-way control valve (1), the valve rod (1a) that control circuit (23) is controlled electronic two-way control valve (1) moves up and down, change the aperture of electronic two-way control valve (1), the temperature value of setting in the holding temperature flow dontroller (2b) is constant;
3.. settle the standard the flow value stage: temperature flow controller (2b) is gathered input to differential pressure pickup (4) signal is by calculating, and the flow value of the electronic two-way control valve (1) with the temperature value of keeping setting when constant is as the normal stream value under this setting temperature;
4.. feedback control circuit detects the real-time flow data stage internally: forms an internal feedback control loop by temperature flow controller (2b), flowmeter (3), differential pressure pickup (4), electronic two-way control valve (1), temperature flow controller (2b) by flowmeter (3), differential pressure pickup (4) constantly the flow value of detection by electronic two-way control valve (1) as real-time flow data;
5.. normal stream value and real-time flow data be calculation stages relatively: temperature flow controller (2b) is constantly gathered the signal of differential pressure pickup (4), calculate real-time flow data, compare, calculate according to normal stream value and real-time flow data by electronic two-way control valve (1);
6.. adjust the electronic two-way control valve aperture stage: after temperature flow controller (2b) comparison operation, output control signal (22`) is given the control circuit (23) of electronic two-way control valve (1), control circuit (23) control valve rod (1a) moves up and down, change the aperture of electronic two-way control valve (1), thereby the given normal stream value of holding temperature flow dontroller (2b) is constant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710057678 CN101074734A (en) | 2007-06-20 | 2007-06-20 | Electric flow self-balancing adjusting valve and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710057678 CN101074734A (en) | 2007-06-20 | 2007-06-20 | Electric flow self-balancing adjusting valve and method |
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| CN101074734A true CN101074734A (en) | 2007-11-21 |
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| CN106015687B (en) * | 2015-03-31 | 2018-09-25 | 阿自倍尔株式会社 | Flow control valve |
| CN108253521A (en) * | 2018-01-15 | 2018-07-06 | 华能青岛热电有限公司 | Heat distribution pipe network adaptive flow balance method and device |
| CN110617338A (en) * | 2019-09-12 | 2019-12-27 | 中山市杰希特电气科技有限公司 | Control method for adjusting accurate opening ratio of proportional valve and fluid proportional valve thereof |
| CN110617338B (en) * | 2019-09-12 | 2024-06-11 | 中山市杰希特电气科技有限公司 | Control method for adjusting accurate opening ratio of proportional valve and fluid proportional valve thereof |
| CN111352450A (en) * | 2020-05-09 | 2020-06-30 | 兰州理工大学 | Digital proportional valve flow control system and method |
| CN111352450B (en) * | 2020-05-09 | 2023-04-07 | 兰州理工大学 | Digital proportional valve flow control system and method |
| CN111692761A (en) * | 2020-07-22 | 2020-09-22 | 嵊州市浙江工业大学创新研究院 | Intelligent constant-temperature water outlet water heater and intelligent control method thereof |
| CN111853338A (en) * | 2020-07-27 | 2020-10-30 | 宁波华成阀门有限公司 | Flowmeter type self-adjusting balance valve and flow self-adjusting method thereof |
| CN111853338B (en) * | 2020-07-27 | 2022-05-20 | 宁波华成阀门有限公司 | Flowmeter type self-adjusting balance valve and flow self-adjusting method thereof |
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