CN201615280U - Non-invasive intelligent valve electric actuator - Google Patents
Non-invasive intelligent valve electric actuator Download PDFInfo
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- CN201615280U CN201615280U CN2009201810301U CN200920181030U CN201615280U CN 201615280 U CN201615280 U CN 201615280U CN 2009201810301 U CN2009201810301 U CN 2009201810301U CN 200920181030 U CN200920181030 U CN 200920181030U CN 201615280 U CN201615280 U CN 201615280U
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Abstract
The utility model discloses a non-invasive intelligent valve electric actuator, which comprises a main-control unit (1), a control power supply (11), a stand-by power supply (12), a control part (3), a display unit (10), an electric motor (4), a transmission mechanism (5), a valve position sensor (6), a torque sensor (7) and an output shaft (9). The valve position sensor (6) adopts a Hall magnetism incremental position sensor and a multi-loop photoelectric absolute value position encoder which are compatible with each other. By adopting the technical scheme, the non-invasive intelligent valve electric actuator enables the main-control unit to be compatible with the two types of valve position monitoring functions of the Hall magnetism incremental position sensor and the multi-loop photoelectric absolute value position encoder, satisfies the different requirements of a user on a middle level or a high level, and improves the precision of parameters; and in addition, a linear photoelectric coupler is used for photoelectric isolation, so that the application safety of equipment and the reliability for signal transmission can be improved.
Description
Technical field
The utility model belongs to the technical field of the electric performance device of valve, relates to the control technique of the electric performance device of valve, and more particularly, the utility model relates to a kind of non-intrusion type intelligent type valve Electric actuator.
Background technique
At present, electric device for valve generally all is to adopt mechanically the structure that valve stroke and moment are controlled, comprise stroke transmission system and moment endless screw transmission agent,, adopt local magnetic switch and long-range line traffic control switch to control for the electric device for valve of non-intrusion type.Intelligent Denso mostly adopts Hall magnetic incremental position transducer, perhaps adopts multi-turn photoelectricity absolute value position encoder.The former adopts hall sensor, and is simple in structure, and the cost performance height is widely used, but corresponding function is perfect inadequately, and precision is also not high enough; Latter's Location accuracy height, but cost an arm and a leg, and power consumption is big, is difficult to when Denso cuts off the power supply guarantee for a long time that valve position shows, is usually used in high-end valve.
The model utility content
Problem to be solved in the utility model provides a kind of non-intrusion type intelligent type valve Electric actuator, its objective is to improve the intelligent level of Electric actuator to valve control, makes to the control of valve more accurately, more reliably and more flexible.
To achieve these goals, the technological scheme taked of the utility model is:
This non-intrusion type intelligent type valve Electric actuator provided by the utility model, comprise main control unit, control power supply, standby power supply, control part, display unit, motor, driving mechanism, valve position sensor, torque sensor and a shaft, be provided with Hall magnetic incremental position transducer or multi-turn photoelectricity absolute value position encoder in the described valve position sensor.
The input of the analogue signal of described Electric actuator, output circuit adopt the independent current source power supply, are provided with precision photoelectric coupler between analogue signal input, output circuit and the main control unit and isolate.
Described Electric actuator provides two kinds of independently signal power sources for remote control switch, i.e. alternating signal power supply and direct current signal power supply, and be that external signal is used through giving control circuit after the photoelectric coupler isolation with the far-end switching signal.
Described display unit adopts graphical dots configuration liquid crystal display, can display text, icon and curve.
Described main control unit when sending the motor action order, used control power supply when producing contactor excitation or solid-state relay and drive by the sound change-over circuit.
The described part of controlling is provided with contactless magnetic switch, to improve safety class
Described IR remote controller can be controlled Electric actuator, also can carry out various conversational operations.
Described torque sensor is connected with main control unit, and the dtc signal of described torque sensor collection send main control unit to handle.
The main control unit of described controller is provided with field-bus interface, and described field-bus interface is used to connect the data communication that CAN Field bus ABAP Adapter realizes industry spot.
Described controller external command is provided with conventional open and close, stops control mode, two-wire system mode switching control, 4-20mA analog amount control mode.
The standby power supply of described controller is made up of the inverter circuit on lithium cell and the control power module.
Described Electric actuator can store the operation of Electric actuator and situation is set.Can utilize the query function of IR remote controller to show information such as the log of Electric actuator and M curve.
The part of controlling of described Electric actuator adopts the magnetic control rotary switch of isolating fully to carry out.
The utility model adopts technique scheme, make the Electric actuator can compatible Hall magnetic incremental position transducer and two kinds of valve position monitoring functions of multi-turn photoelectricity absolute value position encoder, satisfy the user to middle-end or high-end different demands, and improve the precision of parameter; Use precision photoelectric coupler to isolate, improved the reliability of the Security and the signal transmission of equipment utilization; Can show the Electric actuator operation conditions comprehensively, accurately, intuitively by literal, icon, numeral and progress bar during the Electric actuator operation; The log and the M curve that can show Electric actuator when safeguarding with the mode of tabulation and curve by query function; Can also carry out parameter setting, function selection and Electric actuator with the man-machine conversation mode adjusts; Infrared remote controller not only can be controlled the Electric actuator switch valve, can also with the non-intruding mode to Electric actuator carry out the parameter setting, adjusting in the position and moves debugging.
Description of drawings
Below expressed content of this Figure of description and the mark among the figure are made brief description:
Fig. 1 is a structural representation of the present utility model.
Be labeled as among the figure:
1, main control unit, 2, electrical source of power, 3, control part, 4, motor, 5, driving mechanism, 6, valve position sensor, 7, torque sensor, 8, infrared control, 9, output shaft, 10, display unit, 11, control power supply, 12, standby power supply, 13, EBI, 14, photoelectricity isolates.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and working principle, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, design of the present utility model, technological scheme had more complete, accurate and deep understanding to help those skilled in the art.
What Fig. 1 was expressed is structure of the present utility model, this a kind of non-intrusion type intelligent type valve Electric actuator controller comprises main control unit 1, control power supply 11, standby power supply 12, controls part 3, display unit 10, motor 4, driving mechanism 5, valve position sensor 6, torque sensor 7 and output shaft 9.
Execute-in-place in the utility model adopts the contactless magnetic rotary switch or the infrared remote controller of isolating fully to carry out.
For overcoming the problem that exists in the pointed prior art of the background technique part of this specification, realize the purpose of this utility model, the utility model proposes following technological scheme:
This non-intrusion type intelligent type valve Electric actuator provided by the utility model wherein, is provided with Hall magnetic incremental position transducer or multi-turn photoelectricity absolute value position encoder (both compatibilities) in the described valve position sensor 6.
Unlike the prior art, except adopting incremental encoder, can also adopt absolute encoder to gather stroke signal, many a kind of selections concerning the user.
Valve position feedback: obtain valve position signal by valve position sensor 6, for adapting to different demands, Electric actuator can receive the signal of one of valve position sensor of two types: promptly: Hall magnetic incremental position transducer or multi-turn photoelectricity absolute value position encoder.
Hall magnetic incremental position transducer adopts multi-turn photoelectricity absolute value position encoder data mode, but need install handwheel action induction device additional, so that electricity consumption manages to encoder when the Electric actuator dead electricity.
Type of sensor must be determined before software is installed, so that select different software versions.
In structure of the present utility model, the structure that the Electric actuator Central Plains of abandoning prior art is mechanically controlled valve stroke and moment, and finish with the circuit board circuit that contains IC chip.Wherein Hall magnetic incremental position transducer or multi-turn photoelectricity absolute value encoder are used in the collection of stroke.The collection of torque amount is used and is placed end thrust strain disk bridge circuit and precision amplifier between motor shaft and the worm shaft to finish, and so just changes into electronic type control by mechanical type control.Not only improved control accuracy (set positions scope 2.5-100000 circle, 7.5 ° of central shaft output angle resolution) greatly, can also produce intelligentized effect with programming.Owing to reduced stroke transmission system, moment worm screw play system, so mechanically simplified major step than prior art.
The utility model is the automatic control that the results new technology of microelectronic is incorporated into electric device for valve, the performance that product is controlled is automatically reached the level as computer control artificial-intelligent, thereby make to the control of valve more reliably, more flexibly, abundanter, the actual demand that suits engineering site more, also more economical.
External condition of the present utility model:
1, input power supply: three-wire system power frequency three-phase alternating-current supply, fundamental voltage grade are 380V ± 10%;
2, working environment: ambient temperature range-20 ℃～60 ℃, humidity level can with reference to or abide by related standards (≤95%, 25 ℃ time);
3, security level: can with reference to or abide by related standards.(classification of waterproof IP68, explosive-proof grade ExdIIBT4 or ExdIICT4);
4, power supply power: three-wire system power frequency three-phase alternating-current motor (annotate: should dispose the Electric actuator motor special, the motor of adjustment type Electric actuator also should be considered 1200 times/hour Fraquent start factor);
5. mechanical property: vibration frequency 0～150Hz, acceleration 2g, impact resistance: maximum acceleration 5g.
Below be the concrete exemplifying embodiment that the utility model provides:
One, the isolation of control signal:
The input of the analogue signal of Electric actuator described in the utility model, output circuit adopt the independent current source power supply, are provided with precision photoelectric coupler between analogue signal input, output circuit and the main control unit 1 and carry out the photoelectricity isolation.
Unlike the prior art, in the utility model, main control unit 1 has carried out strict isolation with extraneous, to prevent external interference.
Electric actuator belongs to heavy current installation, far-end control system mostly is a weak current equipment, realize electrical isolation between the two for making, the utility model requires input, the output circuit of the analogue signal of Electric actuator to adopt the independent current source power supply, use precision photoelectric coupler to isolate between analogue signal and the Electric actuator major loop, with the reliability of the Security and the signal transmission of the utilization of raising equipment.
Two, the isolation of the signal of switching mode Electric actuator:
Electric actuator described in the utility model promptly exchanges 120V and direct current 24V for remote control switch provides two kinds of independently signal power sources, and to be external signal with the far-end switching signal use through giving control circuit after the photoelectric coupler isolation.
For the switching mode Electric actuator, the utility model also requires to remote control switch provides two kinds of independently signal power sources (exchange 120V and direct current 24V), and is just to give control circuit after external signal is isolated through photoelectricity to use with the far-end switching signal.
Increase by one group of insulating power supply by method in an independent winding of the secondary increase of power transformer.Increase by one group of insulating power supply by method and specialize in the 4-20mA current source output use of line, realize the electrical isolation of Electric actuator and far-end control apparatus for photoelectricity isolation two-way in an independent winding of the secondary increase of power transformer.Passive photoelectricity isolation scheme is adopted in 4-20mA current source control input, need not to isolate power supply.
Three, function of information display:
Demonstration in the utility model unlike the prior art, adopt graphical dots configuration LCD MODULE to show, not only can the Chinese display menu, and can show torque curve in the Electric actuator running, in the Flash of main control unit storage, can store the torque curve of nearest ten switch motions.
The utility model requires the information display window of Electric actuator to adopt graphical dots configuration liquid crystal screen.Can show the Electric actuator operation conditions comprehensively, accurately, intuitively by literal, icon, numeral and progress bar when Denso moves like this; The log and the M curve that can show Electric actuator when safeguarding with the mode of tabulation and curve by query function; Can also carry out adjusting of parameter setting, function selection and Electric actuator with the man-machine conversation mode.
Use 128 * 96 graphic dot matrix liquid crystal display screen.Use the graphic dot matrix display screen to make that graphic symbol can design more rationally, abundant and hommization: text prompt can realize the Chinese and English switching, uses with convenient domestic enterprise; Further can be on display screen Electric actuator log and the torque curve in the video data register.
Screen and human-computer dialogue content:
1, project can be set:
Steer direction: forward or backwards;
Limit method: valve position or moment of torsion;
Open valve moment of torsion thresholding: rating value (50～150) %;
Close valve moment of torsion thresholding: rating value (50～150) %;
Threshold: rating value (150～300) %;
The oven temperature, upper limit: 70 ℃～90 ℃;
Oven temperature, lower limit :-10 ℃～10 ℃;
S1～S4 state relay content: by the specific one of four states coding of customer requirements;
Remote control pattern: analog amount control, the emergent control of ESD, two line traffic controls, switching value control;
On-the-spot steer mode: crawl or interlock;
Outside interlocking: open or cancellation;
Deceleration ratio: 1/10～1/2;
Revise password: 4 bit digital;
Valve position control accuracy: 0.5%～5%FS;
Modification time: current time.
2, adjustable parameter:
Moment of torsion calibration, electric current calibration, the calibration of valve position output current, the calibration of moment of torsion output current, analog input signal calibration (adjustment type Electric actuator).
But 3 Query Informations:
Set For Current, Electric actuator operation note (only writing down switching manipulation), disorderly closedown record, nearest torque curve, nearest current curve, storage are 64K.
4, screen display content:
Steer direction icon, valve position percentage, valve position progress band, control signal icon, motor and the temperature inside the box, battery electric quantity icon, control mode icon, fault type icon and explanatory note, menu text and parameter, operation indicating literal are set.
5, exportable fault message:
Overheated in motor or the case, moment of torsion transfinites, battery is under-voltage, power supply phase shortage, Electric actuator internal fault, ESD warning, control signal mistake, valve position signal mistake.
Four, power supply controlling schemes:
Electrical source of power 2 described in the utility model is powered to main control unit 1 by control power supply 11 modules.Used control power supply when main control unit 1 can produce contactor excitation or solid-state relay and drives when sending motor 4 action commands by the sound change-over circuit.
Except the same with prior art; the utlity model has outside the protective measures such as the phase failure, phase shortage; also adopted a kind of original safety protection way: when the MCU of main control unit normally moves; its can produce the pulse sequence of a fixed frequency when sending motor 4 action commands, used control power supply when the sound change-over circuit on the main control unit 1 produces contactor excitation or solid-state relay driving under the excitation of this pulse sequence.Be that MCU fault or safe dynamic circuit fault all can not produce the control power supply, guaranteed that motor can be because of the misoperation of Electric actuator fault.
Five, infrared control:
IR remote controller described in the utility model (8) can be controlled Electric actuator, also can carry out various dialogues.
On debud mode of the present utility model, adopt advanced infrared communication technology.Need not to open under the situation of electric end cap, just can carry out human-computer dialogue by infrared communication mouth (in 0.75 meter).IR remote controller is under any operating mode situation, even dangerous situation, no matter whether electrical source of power provides all can easily be carried out the non-intrusion type setting to Electric actuator, finishes the adjustment to various settings of Electric actuator and Presentation Function, and this does not accomplish on prior art.
Infrared remote control circuit is considered by unidirectional modulate emission.Signal modulation system and data coding and IrDA protocol-compliant.The infrared signal interface of Electric actuator end is pressed IrDA agreement design transmitted in both directions circuit.
Six, torque sensor:
Torque sensor 7 described in the utility model is connected with main control unit 1, by obtaining torque signal by Electric actuator internal strain electric bridge, send the main control unit (1) of Electric actuator to handle after the instrument amplifier conditioning.
Owing to, Electric actuator can be set more easily to these two unit of valve control than mechanical type to the electronization of valve stroke and moment of torsion control, can be in many ways demonstration such as (digital, curvilinear style); Can realize wireless telecommunications by interface, even internet (comprising human-computer dialogue); Can multi-level, intelligentized error detection and malfunction alarm; Can write down, patrol and examine and diagnose running state and make data and store; Can realize Fieldbus Control, promptly be connected to bus by two lines, make and realize function control and exchanges data between all devices, realize automation control whole system by the module of installing on the Electric actuator.
Seven, bus setting:
Controller described in the utility model is provided with field-bus interface, can connect the CAN Field bus by bus adapter, and described CAN Field bus is connected with main control unit (1) by the ABAP Adapter on the EBI 13.
EBI: according to other international standard approval Field buss such as the extendible Profibus of customer requirements.
Eight, external command:
Controller external command described in the utility model is provided with conventional open and close, stops control mode, two-wire system mode switching control, 4-20mA analog amount control mode.
Nine, reserve battery:
The standby power supply 12 of Electric actuator described in the utility model is made up of the inverter circuit on lithium cell and the control power module.
With lithium cell replace layer-built battery in support battery be because the charge capacity of lithium cell is big, long service life, chargeable and freedom from repairs (changing fast) can be realized non-maintaining and free of replacement basically.Use lithium cell for supporting valve position monitoring (particularly many apertures photoelectricity absolute value encoder) and dot lcd screen to show highly beneficial under the off-position.The charging of lithium cell and electric weight need be managed and monitor, and require charging, electricity consumption and electric weight reasonably management and the monitoring of Electric actuator to lithium cell for this reason, make the long-term work of lithium cell energy under good state.Adopt lithium cell need increase management of charging and discharging circuit and display screen power-saving measures.
Ten, inverse signal:
Inverse signal has multiple choices: four signal relays are arranged, and the signal content of its performance can be provided with by menu dialogue, have an appointment altogether 20 available; Other has 2 tunnel feedback output 4-20mA analogue signals, represents current valve position and current torque respectively.
11, the Security of drive circuit:
The utility model adopts the sound change-over circuit to provide the conditional power source in the motor-drive circuit of Denso except proposing, and has carried out interlocking mechanism for the forward and backward control signal of motor on circuit, guarantees the safety of motor.
12, the adaptability of housing temperature:
The utility model requires the Electric actuator circuit to adopt low power dissipation design, to reduce the temperature rise in the controller box.In the controller circuitry electronic temperature transmitter should be arranged, monitoring machine the temperature inside the box changes in real time.When temperature in chassis is on the low side, should connect heating element, with the environment that seasons oneself to cold; When temperature in chassis transfinites, should give a warning and refuse operation command, in case appearring in circuit, the work disorder causes serious consequence.
13, the condition of controlling of the present utility model:
1, (LOCAL) controlled at the scene:
(1), panel knob: panel is provided with two contactless magnetic rotary switches.One of them is two self-healing type rotary switches, is used for the scene Denso is controlled; But another is three non-self-healing type rotary switches of locking, is used for the switching that Denso is controlled power.
Two positions of self-healing type rotary switch are respectively: " driving valve " (OPEN), " pass valve " (CLOSE).Provide " driving valve " or " pass valve " signal by suitable, counterclockwise rotary switch.
Three positions of non-self-healing type rotary switch are respectively: " scene " (LOCAL), " long-range " (REMOTE), " stopping/keeping in repair " (STOP/MAINTAIN).
When being in " scene " position, can use self-healing type rotary switch or infrared remote controller that Electric actuator is controlled, both are effective on an equal basis;
When being in " long-range " position, the switching mode Electric actuator is controlled by remote switch, and the adjustment type Electric actuator is controlled by 4～20mA analogue signal;
When being in " stopping/keeping in repair " position, can using infrared remote controller setting, adjust, calibrate and inquire about.
(2), infrared remote controller: intrinsic safety type, security level meets IP67, explosive-proof grade satisfies ExdIIBT4, unidirectional send mode, 9V layer-built battery power supply, panel is provided with seven operating buttons: " moving down " (↓), " moving to right " (→), " minimizing " (-), " increase " (+), " confirming/stop " (ENTER/STOP), " pass valve " (CLOSE), " driving valve " (OPEN).
Two fundamental functions of the infrared remote controller of unidirectional transmission are:
Use " driving valve ", " pass valve " and " confirming/stop " three buttons that the scene that Electric actuator carries out linkage pattern is controlled, " driving valve " and " pass valve " two the button realization scenes under the crawl pattern of perhaps using are controlled;
Use " moving down ", " moving to right ", " minimizings ", " increase " and " confirming/stop " five buttons to cooperate to be provided with, to adjust, to calibrate and human-computer dialogue such as inquiry is operated with liquid crystal display.
2, remote control:
(1), switching mode Electric actuator: dispose three telecontrol rotary switches of often opening: " driving valve " (OPEN), " pass valve " (CLOSE), " stopping " (STOP).
" drive valve ", " pass valve " and " stopping " three rotary switches select for use according to steer mode, following three rotary switches of linkage pattern are usefulness entirely, the crawl pattern is only used " driving valve " and " pass valve " two rotary switches.Steer mode can be by the human-computer dialogue setting, and dispatching from the factory is defaulted as the crawl pattern.
" suddenly stopping " signal can be push-button switch, also can use interlocking contact, be used in case of emergency requiring valve to rest on preposition, preposition can be set to by human-computer dialogue: standard-sized sheet (100%), complete shut-down (0%), specified position (1～99%), current location.
Dispatch from the factory and be defaulted as current location.
" suddenly stop " signal and can be set at Chang Kai or normally closed by human-computer dialogue.
Remote switch can adopt inside or externally fed, and in-line power has two kinds of selection: 24VDC, in the current limliting 50mA, 500 meters of command ranges; 120VAC, current limliting 25mA, command range is more than 500 meters.
Adopt externally fed should select power supply type and grade according to command range, supply voltage should be greater than 120V in principle yet.
(2) adjustment type Electric actuator: can select the analog control signal of current type or voltage-type, typical analogue signal has: 4～20mA current signal, 1～5V voltage signal.
The upper and lower bound of analog control signal and signal type can be by the human-computer dialogue settings.
Be limited to 21mA on the current signal; under be limited to 3mA; be limited to 10.5V on the voltage signal, be limited to 0.5V down, the input resistance of current signal is 100 Ω; input capacitance is 0.1 μ F; the input resistance of voltage signal is 10k Ω, and input capacitance is 0.1 μ F, and analog control signal transfinites and is regarded as failure condition; Electric actuator is handled by the emergency shutdown mode, and valve is rested on the preposition.
3, interlocking signal:
Double switch amount signal: open the valve interlocking and close the valve interlocking.Provide dry contact or OC (OD) terminal by external control system.
4, human-computer dialogue:
Human-computer dialogue is finished by the liquid crystal display and the infrared remote controller of Electric actuator, and the content of dialogue comprises: parameter setting, valve position are adjusted, data calibration and information inquiry.
14, output condition of the present utility model:
1, valve position output: 4～20mA current signal, maximum load resistance 600 Ω can calibrate by human-computer dialogue.
2, moment of torsion output: 4～20mA current signal, maximum load resistance 600 Ω can calibrate by human-computer dialogue.
3, state output:, can output state content and contact position (Chang Kai or normal be set by human-computer dialogue with the miniature locking type of the single contact of four 250VAC/5A contact capacities power relay output running state, interlocked operation, moment of torsion transfinites when driving valve, battery failure, moment of torsion transfinites when closing valve, the power supply phase shortage, moment of torsion transfinites in the stroke, the remote signal mistake, the arbitrary position moment of torsion transfinites, failsafe valve (stall), driving valve, electrical fault is (overheated, stall), closing valve, Denso fault (position, moment of torsion, move, Electric actuator fault (self diagnosis), operated by handwheel, temperature over-range (Electric actuator casing), telecontrol, steer direction, field control, human-computer dialogue/maintenance.
5, ESD output: the small-sized locking type of the single contact of 250VAC/5A contact capacity relay output ESD (urgent protection) signal can be provided with that the contact is often opened or normally closed by human-computer dialogue.
6, show output:
(1), liquid crystal display panel: adopt 128 * 96 graphic dot matrixes screen, white backlight, ken 54mm * 31mm is used to show the Denso running state and carries out human-computer dialogue.Displaying contents comprises real-time running state indication and human-computer dialogue window, the form of expression that adopts numeral, literal and icon to merge, during word content wherein can be realized by human-computer dialogue/English the switching.
(2), panel leds: four LED lights, expression respectively: red light---receive infrared signal, establish fault and normal flash of light indication (quickflashing and sudden strain of a muscle slowly) by valve wide open, green light---valve complete shut-down, amber light---move, blue lamp---.
15, drive condition of the present utility model:
1, drive control signal: control power supply provide three line control signals to motor-drive circuit: control power line, just change guide line, the counter-rotating guide line.
The control power supply is managed by the sound change-over circuit on the Electric actuator, the faulty operation in the time of effectively preventing the Electric actuator step-out.Simultaneously, the forward and backward control signal sent of MCU through the logical check of hardware circuit by after can give drive circuit.
2, switching mode drive circuit: power switch uses two small-sized three-phase contactors, between the contactor configuration mechanical interlocked, in the energized circuit of the field coil that utilizes the auxiliary normally-closed contact of contactor to intersect simultaneously to be serially connected in contactor, form electrical interlocks.Three-way drive control signal is given the contactor excitation by two auxiliary reclays.Auxiliary reclay adopts the power relay of miniature 1a contact.
3, adjustment type drive circuit: the reversible solid-state relay circuit of three-phase that power switch uses integrated zero-cross triggering circuit, two Darlington photoelectricity coupling circuits and some Resistor-Capacitor Units of five bidirectional thyristors and five photoelectricity isolation to form.Three line control signals can directly drive Electric actuator.
16, communication condition of the present utility model:
The external communication bus interface is set on main control unit, can connects outside industrial field bus by suitable bus adapter; Also can be connected with PC by suitable transducer.If utilize this communication interface to download stored history in the data recorder, can cooperate application software (needing the separate case exploitation) the on-line monitoring Denso operation of PC.
17, the feedback condition of electric current and temperature in the utility model:
1, currrent feedback: obtain motor current signal by the precision current mutual inductor in the motor-drive circuit, after the half-wave precision rectifer is handled, send the main control unit monitoring.
2, Temperature Feedback: obtain the motor overheating signal by the motor heat protective switch, pass through the temperature of the integrated semiconductor temperature sensor monitors controller box on the Electric actuator main control unit simultaneously, to guarantee the Electric actuator reliable operation
18, motor speed control:
In circuit for controlling motor of the present utility model, by the learning and memory function in the control program, make main control unit the actual loading situation to formulate the proper speed controlling schemes, realize flexible operation to valve, reduce mechanical shock, embody the characteristics of smart machines.
19, sealing protection ability:
The utility model is having more thorough design aspect the sealing protection ability.Look into flame proof such as window in sight glue envelope and O-ring seals are partly arranged; Adopt double sealing structure in the electric chamber of wiring; Control handle has been abandoned the intrusive mood structure and has been adopted magnetic switch, has avoided and the contacting of the external world.Security level of the present utility model like this reaches IP68 (7 meters, 72 hours) under water, and explosive-proof grade reaches ExdIIBT4 or ExdIICT4.
20, mechanical structure
The utility model is owing to selected the thrust disc structure, and the casing load is reduced to minimum, so adopted the aluminium alloy box material, the cast iron tank material of prior art is in light weight relatively.Because worm and gear adopts high-strength material, install in addition and adopt high perofmrnace lubricating oils (as the SAE80EP Britain trade mark) in the body cavity again, improved contact strength, optional modulus is less, makes the volume of product mechanical part less.At electrical appliance part of the present utility model, because selecting for use of polycarbonate (PC) high strength new material guaranteed the requirement as parts such as viewing window, electric supports.
21, dual controller structure:
Adopt MMCU+SMCU (dual controller) combination.MMCU is responsible for management and data processing and most of input output work of The whole control circuit, and the valve position action monitors (action of the dry reed-pipe in the supervision Hall transducer), back-up power is managed and liquid crystal display panel control and SMCU bears.When the Electric actuator dead electricity, main circuit quits work, and is that the monitoring circuit of core relies on back-up power to work on SMCU: power to save the energy content of battery to main circuit immediately when finding that valve position changes.Another work of SMCU is that liquid crystal display panel is controlled, here control has two layers of meaning: MMCU will need content displayed to send to SMCU with the form of command code by the SPI universal serial bus during externally fed, carry out editing and composing and send to the drive circuit of liquid crystal screen by SMCU, during the back-up power power supply, carry out the layout version and send to the drive circuit of liquid crystal screen by SMCU, during the back-up power power supply, SMCU will be closed down LCD to save energy after main circuit quits work some hrs, and liquid crystal screen is opened once more when main circuit is activated.
The working method that this dual controller is shared out the work and help one another helps improving the working efficiency of MMCU, SMCU is transferred in loaded down with trivial details demonstration editing and composing work finish the reliability that also helps to improve primary control program.
22, dynamic driving power control circuit
Increase the control power control circuit in the motor driving controlling schemes, guarantee that by hardware circuit motor can not driven by mistake when control program is forgotten oneself.The control power control circuit only just can produce the control power supply when receiving the continuous impulse of the characteristic frequency that MMCU sends, for Drive and Control Circuit power supply otherwise motor can't be driven.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (10)
1. non-intrusion type intelligent type valve Electric actuator, comprise main control unit (1), control power supply (11), standby power supply (12), control part (3), display unit (10), motor (4), driving mechanism (5), valve position sensor (6), torque sensor (7) and output shaft (9), it is characterized in that: adopt Hall magnetic incremental position transducer and multi-turn photoelectricity absolute value position encoder in the described valve position sensor (6).
2. according to the described non-intrusion type intelligent type valve of claim 1 Electric actuator, it is characterized in that: the input of the 4-20mA analogue signal of described Electric actuator, output circuit adopt the independent current source power supply, and being provided with structure between analogue signal input, output circuit and the main control unit (1) is the photoelectricity isolation (14) of precision photoelectric coupler.
3. according to the described non-intrusion type intelligent type valve of claim 2 Electric actuator, it is characterized in that: described Electric actuator provides two kinds of independently signal power sources for far-end switch fixed-position stop control apparatus or two wires switch controlling device, promptly exchange 120V and direct current 24V, and to be external signal with the far-end switching signal use through giving the Electric actuator circuit after the photoelectric coupler isolation.
4. according to claim 1 or 2 or 3 described non-intrusion type intelligent type valve Electric actuators, it is characterized in that: described display unit (10) adopts graphical dots configuration liquid crystal display.
5. according to claim 1 or 2 or 3 described non-intrusion type intelligent type valve Electric actuators, it is characterized in that: described main control unit (1) when sending motor (4) action command, used control power supply (11) when producing contactor excitation or solid-state relay and drive by the sound change-over circuit.
6. according to claim 1 or 2 or 3 described non-intrusion type intelligent type valve Electric actuators, it is characterized in that: the described part (3) of controlling adopts contactless magnetic switch, to improve safety class, described independent infrared remote controller also can be controlled Electric actuator, and carry out more conversational operation, or device runnability is inquired about.
7. according to claim 1 or 2 or 3 described non-intrusion type intelligent type valve Electric actuators, it is characterized in that: described torque sensor (7) is connected with main control unit (1), and the dtc signal that described torque sensor (7) is gathered send main control unit (1) to handle.
8. according to claim 1 or 2 or 3 described non-intrusion type intelligent type valve Electric actuators, it is characterized in that: described main control unit (1) is provided with field-bus interface (13), and described field-bus interface (13) is used to connect CAN or RS485 Field bus ABAP Adapter to realize the data communication of industry spot.
9. according to claim 1 or 2 or 3 described non-intrusion type intelligent type valve Electric actuators, it is characterized in that: described Electric actuator external command is provided with conventional open and close, stops control mode, two-wire system mode switching control, 4-20mA analog amount control mode.
10. according to claim 1 or 2 or 3 described non-intrusion type intelligent type valve Electric actuators, it is characterized in that: the standby power supply of described Electric actuator (12) is made up of the inverter circuit on lithium cell and control power supply (11) module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201810301U CN201615280U (en) | 2009-12-08 | 2009-12-08 | Non-invasive intelligent valve electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201810301U CN201615280U (en) | 2009-12-08 | 2009-12-08 | Non-invasive intelligent valve electric actuator |
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| Publication Number | Publication Date |
|---|---|
| CN201615280U true CN201615280U (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201810301U Expired - Fee Related CN201615280U (en) | 2009-12-08 | 2009-12-08 | Non-invasive intelligent valve electric actuator |
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| CN (1) | CN201615280U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122821A (en) * | 2014-07-22 | 2014-10-29 | 上海继增自控设备有限公司 | Circuit of in-place rotary knobs of electric actuator |
| CN105840900A (en) * | 2016-05-31 | 2016-08-10 | 无锡莱谱尔科技有限公司 | Foundation Fieldbus type controller for electric valve actuator |
-
2009
- 2009-12-08 CN CN2009201810301U patent/CN201615280U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122821A (en) * | 2014-07-22 | 2014-10-29 | 上海继增自控设备有限公司 | Circuit of in-place rotary knobs of electric actuator |
| CN104122821B (en) * | 2014-07-22 | 2019-08-27 | 安徽费斯威尔流体智控有限责任公司 | Electric operator knob circuit on the spot |
| CN105840900A (en) * | 2016-05-31 | 2016-08-10 | 无锡莱谱尔科技有限公司 | Foundation Fieldbus type controller for electric valve actuator |
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Assignee: Huangshan Liangye Valve Co., Ltd. Assignor: Xiang Xiaoming Contract record no.: 2011340000112 Denomination of utility model: Non-invasive intelligent valve electric actuator Granted publication date: 20101027 License type: Exclusive License Record date: 20110711 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20151208 |
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