CN100489705C - Automatical debug method for installing electric valve locater - Google Patents
Automatical debug method for installing electric valve locater Download PDFInfo
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- CN100489705C CN100489705C CNB2007101265940A CN200710126594A CN100489705C CN 100489705 C CN100489705 C CN 100489705C CN B2007101265940 A CNB2007101265940 A CN B2007101265940A CN 200710126594 A CN200710126594 A CN 200710126594A CN 100489705 C CN100489705 C CN 100489705C
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Abstract
The invention discloses an automatic assembling and debugging method of intelligent locator of electric valve on the common electric executing mechanism to control and locate in the industrialized automatic instrument domain, which is characterized by the following: simplifying the operation and usage of electric executer or electric valve as well as assembling and debugging; identifying mechanic stroke automatically; adjusting control parameter of locator movement self-optimizingly and automatically; integrating observation and control function of traditional electric executor or servo amplifier in the electric vale and valve position measuring function of valve position feedback mechanism to be highly intelligentized.
Description
Patented claim of the present invention is that application number is 200510049674.1, the applying date is on April 27th, 2005, denomination of invention is divided an application for " electric valve intelligent steady arm and installation automatically debug method thereof " patent of invention.
Technical field
The invention belongs to the industrial automation instrument field, the installation automatically debug method that particularly a kind of automatic identification that is installed in the electric valve intelligent locator structure of controlling in all kinds of common electric topworks and locating is adjusted from optimizing.
Background technology
Electrically operated valve is widely used in the automation control system of process industry industries such as electric power, metallurgy, iron and steel, papermaking, environmental protection, chemical industry, oil refining.Traditional electrically operated valve comprises servoamplifier, electric operator, variable valve, servoamplifier is accepted control signal of being sent by regulator in the automation control system or DCS system and the valve position signal that is sent by the valve position sending module in the electric operator, send the control signal of controlling motor positive and inverse in the electric operator after comparing computing, by driven by motor reducing gear in the electric operator, and then change the aperture of variable valve and transferred rate-of flow.Traditional electrically operated valve shortcoming is: because servoamplifier is installed at a distance, be not installed on the electric operator, cause and manipulate inconvenience; The servoamplifier function singleness causes the kind model various, the Installation and Debugging complexity, and control accuracy, stability, dead band and return difference are very big; Valve position sending module in the electric operator need be through dispatching from the factory and the careful adjustment of professional when installing, and is very inconvenient.Some electronic type electric operators or intelligent electric actuating mechanism such as the ZL patent No. 98251222.8, the ZL patent No. 98237308.2 etc. are arranged at present, be that servoamplifier is integrated in the electric operator becoming one and increases some intelligent functions, its outstanding shortcoming of intelligent electric actuating mechanism is: DJK, the DJZ series common electric topworks that the standardization of domestic co-design has been finalized the design is transformed, increase automatically controlled part separately and cause product not have unified standard series, produce complexity, the user chooses inconvenience; The use Installation and Debugging have nothing in common with each other, and especially safeguard inconvenience, whole intelligent electric actuating mechanism will be changed in the time of maybe will changing the scene when going wrong, and cost is very big.
Summary of the invention
The present invention be directed to the deficiency on the function of traditional electric actuator or electrically operated valve and intelligent electric actuating mechanism, the installation automatically debug method that provides a kind of its automatic identification that is installed in the electric valve intelligent steady arm of controlling in all kinds of common electric topworks and locating to adjust from optimizing.
Electric valve intelligent steady arm among the present invention comprises valve position feedback mechanism and shell, and the shell internal fixation is equipped with telemetry circuit plate, power supply and the drive circuit board that contains monitoring interface, and mounting bracket is fixed on the shell.Valve position feedback mechanism is used to measure the valve opening of electric operator and variable valve, comprises valve rod, and connecting rod is vertically fixed on the valve rod, and in the stopper slot of connecting rod, the other end is connected with the transmission shaft vertical fixing end of L type feedback linkage by spring compression; Driving gear and follower gear fit in the gear set setting in the enclosure, and driving gear and transmission shaft are connected, and follower gear and potentiometer are connected.The input end of telemetry circuit plate is connected with the potentiometer lead with the external control system signal output part respectively, and output terminal is connected with the input end lead of power supply and drive circuit board.
The telemetry circuit plate comprises two paths of signals filtering and amplification, and the one end is electrically connected with external control system signal output part and potentiometer respectively, and the other end is connected electrically in respectively on the analog-digital conversion a/d input end; The output terminal of analog-digital conversion a/d, button, liquid crystal display LCD are electrically connected on the microprocessor MPU respectively; Unidirectional serial communication interface UART input end is electrically connected with microprocessor MPU, and output terminal is electrically connected with the input end of digital-to-analog conversion D/A, and the output terminal of digital-to-analog conversion D/A is electrically connected with electric current and voltage conversion V/I input end; Bidirectional linked list communication interface UART is electrically connected with microprocessor MPU and field bus communication interface respectively.Microprocessor MPU can adopt the MSP430F149 type.
Power supply and drive circuit board comprise power circuit part and driving circuit section.The power circuit part branch comprises transformation isolation, rectification, filtering, voltage stabilizing.Driving circuit section comprises photoelectricity coupling and solid-state relay, and the input end of photoelectricity coupling is electrically connected with the microprocessor MPU of telemetry circuit plate, and output terminal is electrically connected with the solid-state relay input end.
The installation automatically debug method of this electric valve intelligent steady arm, comprise the automatic identification method of mechanical trip and steady arm action controlled variable from the optimizing automatic setting method;
The automatic identification method of described mechanical trip comprises the steps:
A. microprocessor sends the positive rotaring signal of control motor, and this signal is just changeing the solid-state relay conducting through the photoelectricity Coupling Control, is just transporting row through driving circuit control electric operator motor;
B. microprocessor monitors valve position Y and rate of change thereof by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d;
C. when valve position Y towards direction change and rate of change during greater than threshold value M the control motor continue just transporting row; Control motor stall when the valve position rate of change is less than or equal to threshold value M, the valve position Y of this moment is exactly mechanical trip full scale point Ymax, 0.2%≤M≤0.5%;
D. microprocessor sends control motor reverse signal, and this signal is done the counter-rotating operation through the conducting of photoelectricity Coupling Control counter-rotating solid-state relay through driving circuit control electric operator motor;
E. microprocessor monitors valve position Y and rate of change thereof by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d;
F. when valve position Y change to another way and rate of change time control motor continues the counter-rotating operation greater than threshold value M; Control motor stall when the valve position rate of change is less than or equal to threshold value M, the valve position Y of this moment is exactly mechanical trip Ymin at zero point, 0.2%≤M≤0.5%.
Described intelligence dynamoelectric valve door holder action controlled variable from the optimizing automatic setting method, comprise the steps:
G. with just commentaries on classics brake controlled variable Ez20, Ez50, the Ez80 at 20%, 50%, 80% valve position place, and the reverse brake at 20%, 50%, 80% valve position place action controlled variable Ef20, Ef50, Ef80 are set to 0.1%;
H. from optimizing automatic adjusting Ez20 and Ef20, concrete steps are 1, microprocessor sends control motor reverse signal, and this signal is done the counter-rotating operation through the conducting of photoelectricity Coupling Control counter-rotating solid-state relay through driving circuit control electric operator motor; 2, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d; 3, when valve position Y reaches 10%, the stall of control motor; 4, setting valve setting by microprocessor is X=20%, sends the positive rotaring signal of control motor, and this signal is just changeing the solid-state relay conducting through the photoelectricity Coupling Control, is just transporting row through driving circuit control electric operator motor; 5, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d; 6, as valve position Y＜X and error D〉during Ez20, the control motor continues just transporting row; 7, when valve position Y＜X and error D≤Ez20, control motor reversing braking brake; 8, as Y〉the Ez20+0.1% assignment is given new Ez20 during X, and repeated for 1～7 step; 9, Ez20 is constant and forward next step to up to as Y≤X the time; 10, microprocessor sends the positive rotaring signal of control motor, and this signal is just changeing the solid-state relay conducting through the photoelectricity Coupling Control, is just transporting row through driving circuit control electric operator motor; 11, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d; 12, when valve position Y reaches 30%, the stall of control motor; 13, setting valve setting by microprocessor is X=20%, sends control motor reverse signal, and this signal is done the counter-rotating operation through the conducting of photoelectricity Coupling Control counter-rotating solid-state relay through driving circuit control electric operator motor; 14, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d; 15, as valve position Y〉X and error D〉during Ef20, the control motor continues the counter-rotating operation; 16, as valve position Y〉when X and error D＜=Ef20, control motor reversing braking brake; 17, the Ef20+0.1% assignment is given new Ef20 when Y＜X, and repeats for 10～16 steps; 18, Ef20 is constant and forward next step to up to as Y 〉=X the time;
I. from optimizing automatic adjusting Ez50 and Ef50, rotate and reverse since 40% and 60% position respectively and run to X=50%, its step is identical with step h;
J. from optimizing automatic adjusting Ez80 and Ef80, rotate and reverse since 70% and 90% position respectively and run to X=80%, its step is identical with step h.
Electric valve intelligent steady arm of the present invention can be installed in to be controlled in all kinds of common electric topworks and locatees, the valve position measurement function of the valve position feedback mechanism of the observing and controlling function of traditional electric actuator or the servoamplifier in the electrically operated valve and design become one and highly intelligent, to adapting to different manufacturers all kinds of common electric topworks and in-situ production environment variation issue owing to what become that stand-alone product occurs, design the automatic debug function of installation that automatic identification is adjusted from optimizing, solved problem that existing product exists and cheap fully.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a valve position feedback mechanism structure synoptic diagram among Fig. 1;
Fig. 3 is a telemetry circuit plate structure block scheme among Fig. 1;
Fig. 4 is power supply and a drive circuit board block diagram among Fig. 1;
Fig. 5 is mechanical trip automatic identification method realization flow figure of the present invention;
Fig. 6 be action controlled variable of the present invention from optimizing automatic setting method realization flow figure.
Embodiment
As depicted in figs. 1 and 2, a kind of intelligence dynamoelectric valve door holder comprises valve position feedback mechanism and shell 2, shell 2 internal fixation are equipped with telemetry circuit plate 3, power supply and the drive circuit board 4 that contains monitoring interface, and shell 2 usefulness mounting brackets 1 are fixed in the common electric topworks.Valve position feedback mechanism comprises valve rod 9, and connecting rod 7 is vertically fixed on the valve rod 9, and in the stopper slot 8 of connecting rod 7, the other end is connected with transmission shaft 5 vertical fixing an end of L type feedback linkage 6 by spring compression.Driving gear 10 and follower gear 11 fit in gear set and are arranged in the shell 2, and driving gear 10 is connected with transmission shaft 5, and follower gear 11 is connected with potentiometer 12.The input end of telemetry circuit plate 3 is connected with potentiometer 12 leads with the external control system signal output part respectively, and output terminal is connected with the input end lead of power supply and drive circuit board 4.The straight-line displacement of valve rod 9 drives the connecting rod 7 of fixedlying connected with it and does rectilinear motion up and down, be connected on the transmission shaft 5 and with its as end of the L type feedback linkage 6 of fulcrum by activity about spring compression is the stopper slot 8 of connecting rod 7 in, and rotate with the rectilinear motion of connecting rod 7, drive driving gear 10 rotations by transmission shaft 5, rely on gearing mesh to drive follower gear 11 and potentiometer 12 rotations fixed thereon, thereby the valve position of straight stroke electric actuating mechanism is converted to the change in resistance of potentiometer 12.
As shown in Figure 3 and Figure 4, telemetry circuit plate 3 is used for measuring, calculates, controls, operates, monitors, comprise two paths of signals filtering and amplify 13, the one end is electrically connected respectively with external control system signal output part and potentiometer 12 respectively, and the other end is connected electrically in respectively on analog-digital conversion a/d 14 input ends.The output terminal of analog-digital conversion a/d 14, button 15, liquid crystal display LCD 16 are electrically connected to respectively on the microprocessor MPU 17.Unidirectional serial communication interface UART 18 input ends are electrically connected with microprocessor MPU 17, and output terminal is electrically connected with the input end of digital-to-analog conversion D/A 19, and the output terminal of digital-to-analog conversion D/A 19 is electrically connected with electric current and voltage conversion V/I 20 input ends.Bidirectional linked list communication interface UART 22 is electrically connected with microprocessor MPU 17 and field bus communication interface 21 respectively.Power supply and drive circuit board 4 are used to produce the fixture system working power and are used to drive electric operator, comprise power circuit part and driving circuit section.The power circuit part branch comprises transformation isolation 23, rectification 24, filtering 25, voltage stabilizing 26.Driving circuit section comprises photoelectricity coupling 27 and solid-state relay 28, and the input end of photoelectricity coupling 27 is electrically connected with the microprocessor MPU 17 of telemetry circuit plate 3, and output terminal is electrically connected with solid-state relay 28 input ends.
The change in resistance of valve position feedback potentiometer is converted into change in voltage by the reference power supply that adds thereon, the Control current signal that is sent by regulator in the automation control system or DCS system is converted into given voltage through sample resistance, these two is removed by its signal filtering and amplifying element respectively and disturbs, send into A/D and be converted into digital quantity, give control signal that MPU carries out sine function computing, processing and produce the control motor positive and inverse again to power supply and drive circuit board.The actual valve position of MPU after with sampling processing is by unidirectional UART and serial D/A communication and obtain the remote alarms of long-range valve position output signal and tracing trouble by V/I.Button and LCD constitute the man-machine interaction monitoring interface.MPU is connected the communication of realization digital remote by two-way UART with the field bus communication interface.220V.AC AC power produces the galvanic current pressure that main telemetry circuit plate is used through the transformation isolation and through rectification, filtering and mu balanced circuit; The control signal of the control motor positive and inverse that comes from main telemetry circuit plate after the photoelectricity coupling is isolated, the conducting of control solid-state relay with end, do the forward or reverse motion by motor in the driving circuit control electric operator again or stop.
As shown in Figure 5, the automatic identification method of mechanical trip comprises the steps: in the installation automatically debug method of the present invention
A. microprocessor sends the positive rotaring signal of control motor, and this signal is just changeing the solid-state relay conducting through the photoelectricity Coupling Control, is just transporting row through driving circuit control electric operator motor;
B. microprocessor monitors valve position Y and rate of change thereof by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d;
C. change and rate of change control motor greater than 0.2 time continues just transporting row towards direction as valve position Y; Control motor stall when the valve position rate of change is less than or equal to 0.2, the valve position Y of this moment is exactly mechanical trip full scale point Ymax;
D. microprocessor sends control motor reverse signal, and this signal is done the counter-rotating operation through the conducting of photoelectricity Coupling Control counter-rotating solid-state relay through driving circuit control electric operator motor;
E. microprocessor monitors valve position Y and rate of change thereof by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d;
F. change to another way and rate of change continues the counter-rotating operation greater than 0.2 time control motor as valve position Y; Control motor stall when the valve position rate of change is less than or equal to 0.2, the valve position Y of this moment is exactly mechanical trip Ymin at zero point.
As shown in Figure 6, the action controlled variable of the steady arm in the installation automatically debug method of the present invention comprises the steps: from the optimizing automatic setting method
G. with just commentaries on classics brake controlled variable Ez20, Ez50, the Ez80 at 20%, 50%, 80% valve position place, and the reverse brake at 20%, 50%, 80% valve position place action controlled variable Ef20, Ef50, Ef80 are set to 0.1%;
H. from optimizing automatic adjusting Ez20 and Ef20, concrete steps are 1, microprocessor sends control motor reverse signal, and this signal is done the counter-rotating operation through the conducting of photoelectricity Coupling Control counter-rotating solid-state relay through driving circuit control electric operator motor; 2, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d; 3, when valve position Y reaches 10%, the stall of control motor; 4, setting valve setting by microprocessor is X=20%, sends the positive rotaring signal of control motor, and this signal is just changeing the solid-state relay conducting through the photoelectricity Coupling Control, is just transporting row through driving circuit control electric operator motor; 5, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d; 6, as valve position Y＜X and error D〉during Ez20, the control motor continues just transporting row 7, when valve position Y＜X and error D≤Ez20, control motor reversing braking brake; 8, as Y〉the Ez20+0.1% assignment is given new Ez20 during X, and repeated for 1～7 step; 9, Ez20 is constant and forward next step to up to as Y≤X the time; 10, microprocessor sends the positive rotaring signal of control motor, and this signal is just changeing the solid-state relay conducting through the photoelectricity Coupling Control, is just transporting row through driving circuit control electric operator motor; 11, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d; 12, when valve position Y reaches 30%, the stall of control motor; 13, setting valve setting by microprocessor is X=20%, sends control motor reverse signal, and this signal is done the counter-rotating operation through the conducting of photoelectricity Coupling Control counter-rotating solid-state relay through driving circuit control electric operator motor; 14, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification, analog-digital conversion a/d; 15, as valve position Y〉X and error D〉during Ef20, the control motor continues the counter-rotating operation; 16, as valve position Y〉when X and error D＜=Ef20, control motor reversing braking brake; 17 when Y＜X the Ef20+0.1% assignment give new Ef20, and repeated for 10～16 steps; 18, Ef20 is constant and forward next step to up to as Y 〉=X the time;
I. from optimizing automatic adjusting Ez50 and Ef50, rotate and reverse since 40% and 60% position respectively and run to X=50%, its step is identical with step h;
J. from optimizing automatic adjusting Ez80 and Ef80, rotate and reverse since 70% and 90% position respectively and run to X=80%, its step is identical with step h.
Claims (1)
1, electric valve locater installation automatically debug method, it is characterized in that this method comprise the automatic identification method of mechanical trip and steady arm action controlled variable from the optimizing automatic setting method;
The automatic identification method of described mechanical trip comprises the steps:
A. microprocessor sends the positive rotaring signal of control motor, and this signal is through photoelectricity coupling (27) control just commentaries on classics solid-state relay (28) conducting, and control electric operator motor is just being transported row;
B. microprocessor monitors valve position Y and rate of change thereof by valve position feedback mechanism, signal filtering and amplification (13), analog-digital conversion a/d (14);
C. when valve position Y towards direction change and rate of change during greater than threshold value M the control motor continue just transporting row; Control motor stall when the valve position rate of change is less than or equal to threshold value M, the valve position Y of this moment is exactly mechanical trip full scale point Ymax, 0.2%≤M≤0.5%;
D. microprocessor sends control motor reverse signal, and this signal is through the conducting of photoelectricity coupling (27) control counter-rotating solid-state relay (28), and control electric operator motor is done the counter-rotating operation;
E. microprocessor monitors valve position Y and rate of change thereof by valve position feedback mechanism, signal filtering and amplification (13), analog-digital conversion a/d (14);
F. when valve position Y change to another way and rate of change time control motor continues the counter-rotating operation greater than threshold value M; Control motor stall when the valve position rate of change is less than or equal to threshold value M, the valve position Y of this moment is exactly mechanical trip Ymin at zero point, 0.2%≤M≤0.5%;
Described intelligence dynamoelectric valve door holder action controlled variable from the optimizing automatic setting method, comprise the steps:
G. with just commentaries on classics brake controlled variable Ez20, Ez50, the Ez80 at 20%, 50%, 80% valve position place, and the reverse brake at 20%, 50%, 80% valve position place action controlled variable Ef20, Ef50, Ef80 are set to 0.1%;
H. from optimizing automatic adjusting Ez20 and Ef20, concrete steps are 1, microprocessor sends control motor reverse signal, and this signal is through the conducting of photoelectricity coupling (27) control counter-rotating solid-state relay (28), and control electric operator motor is done the counter-rotating operation; 2, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification (13), analog-digital conversion a/d (14); 3, when valve position Y reaches 10%, the stall of control motor; 4, setting valve setting by microprocessor is X=20%, sends the positive rotaring signal of control motor, and this signal is through photoelectricity coupling (27) control just commentaries on classics solid-state relay (28) conducting, and control electric operator motor is just being transported row; 5, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification (13), analog-digital conversion a/d (14); 6, as valve position Y＜X and error D〉during Ez20, the control motor continues just transporting row; 7, when valve position Y＜X and error D≤Ez20, control motor reversing braking brake; 8, as Y〉the Ez20+0.1% assignment is given new Ez20 during X, and repeated for 1～7 step; 9, Ez20 is constant and forward next step to up to as Y≤X the time; 10, microprocessor sends the positive rotaring signal of control motor, and this signal is through photoelectricity coupling (27) control just commentaries on classics solid-state relay (28) conducting, and control electric operator motor is just being transported row; 11, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification (13), analog-digital conversion a/d (14); 12, when valve position Y reaches 30%, the stall of control motor; 13, setting valve setting by microprocessor is X=20%, sends control motor reverse signal, and this signal is through the conducting of photoelectricity coupling (27) control counter-rotating solid-state relay (28), and control electric operator motor is done the counter-rotating operation; 14, microprocessor monitors valve position Y by valve position feedback mechanism, signal filtering and amplification (13), analog-digital conversion a/d (14); 15, as valve position Y〉X and error D〉during Ef20, the control motor continues the counter-rotating operation; 16, as valve position Y〉when X and error D＜=Ef20, control motor reversing braking brake; 17, the Ef20+0.1% assignment is given new Ef20 when Y＜X, and repeats for 10～16 steps; 18, Ef20 is constant and forward next step to up to as Y 〉=X the time;
I. from optimizing automatic adjusting Ez50 and Ef50, rotate and reverse since 40% and 60% position respectively and run to X=50%, its step is identical with step h;
J. from optimizing automatic adjusting Ez80 and Ef80, rotate and reverse since 70% and 90% position respectively and run to X=80%, its step is identical with step h.
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| CN103775712B (en) * | 2012-10-18 | 2017-02-01 | 柳曦 | Parameter rapidly self-adjusting method of intelligent valve positioner |
| CN104391458A (en) * | 2014-12-10 | 2015-03-04 | 上海亚虹模具股份有限公司 | Method for self-learning of electric opening and closing of intelligent toilet |
| CN106557023B (en) * | 2017-01-18 | 2019-10-11 | 武汉拓优智能股份有限公司 | Based on one key automatic setting method of nozzle flapper technology |
| CN110985738B (en) * | 2019-11-13 | 2021-07-09 | 杭州电子科技大学 | Self-learning valve positioning device and positioning method thereof |
| CN114576411A (en) * | 2022-02-17 | 2022-06-03 | 苏州易驱智能科技有限公司 | Self-learning valve controller and control method |
| CN114719071B (en) * | 2022-03-03 | 2023-09-08 | 博流控制技术(浙江)有限公司 | Opening degree calculation control method for valve positioner |
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