CN206684505U - A kind of universal valve controller - Google Patents
A kind of universal valve controller Download PDFInfo
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- CN206684505U CN206684505U CN201620845998.XU CN201620845998U CN206684505U CN 206684505 U CN206684505 U CN 206684505U CN 201620845998 U CN201620845998 U CN 201620845998U CN 206684505 U CN206684505 U CN 206684505U
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Abstract
The utility model discloses a kind of universal valve controller, is made up of valve motion information acquisition circuit, arm processor, contactor, I/O circuits, encoder, shaft coupling and power supply.Valve motion information acquisition circuit, for gathering the pulse for characterizing valve real time position and torque, Gray code, millivolt potential, switching value, direct current equality physical signalling, and these signals are delivered into arm processor；Arm processor, performs the control and protection algorithm of valve, and result of calculation is delivered into contactor；Contactor, it is the power device that motor positive and inverse or pneumatic amplifier switch for control valve drive device；I/O circuits, remote operation interface is provided to the upper strata automated system of valve；Encoder, the rotating cycle of valve output shaft is changed into gray code signal；Shaft coupling, on the output shaft of pneumatic operated valve, Direct Travel displacement is converted into the rotating cycle of shaft coupling；Power supply, powered to valve positioner.The utility model proposes valve positioner, realize the general controls to switch valve, regulating valve, motor-driven valve and pneumatic operated valve, and have the characteristics that reliability is high, easy to maintenance.
Description
Technical field
It the utility model is related to a kind of universal valve controller.
Background technology
Valve is that very extensive part is applied in thermal power plant, for carrying out flow control to the working medium in production process
System.Valve is classified according to valve drive forces, two kinds of hand-operated valve and automatic valve can be divided to：The former passes through manpower controlled valve, the latter
Driven by electric power, aerodynamic force or hydraulic power.Consider for safety in production, and with the raising of automatization level, current firepower
Most of hand-operated valve in power plant is substituted by automatic valve.
Core component of the valve positioner as automatic valve, it has also become automated system and the intermediate interface of flow control.
The instruction that valve positioner is sent according to automated system, control valve driving force action, makes valve open, close or be parked in
Some exact position, during driving force acts, valve positioner must also provide protection to valve, to ensure flow control
Securely and reliably.
The production environment of thermal power plant, it is severe to determine that most of valve positioners are in dust, vibration, high temperature, outdoor etc.
Worked under environment, be easily damaged failure, repair and maintenance need to be carried out to it every now and then.Considerable valve positioner design does not conform to
Reason, such as adjustment type valve positioner use mechanical relay, and the frequent movement of regulating valve easily causes mechanical contact arcing to be lost
Effect.It is inconvenient that most of valve positioner is safeguarded, first, the component of charged for replacement controller is unable to, second, after valve power-off,
Need debugging control device again.
On the other hand, in thermal power plant, valve types are various, and the brand of valve positioner is varied.With certain 4 ×
Exemplified by 300MW units, the valve positioner of different brands can have any more 30 kinds, can not be mutually general between brand, and this gives valve control
The maintenance of device processed is made troubles with spare parts management.Such as the valve positioner of some brands has stopped production, and no longer provides spare part,
Just in case this valve positioner breaks down, whole valve must be just changed, this likely results in unit non-programmed halt, with this
Meanwhile the valve positioner spare part of other brands leaves unused in warehouse, does not have substitution.These situations are undoubtedly sent out firepower
The safety of power plant causes very big puzzlement with continuous operation.
Utility model content
Need often to safeguard the present situation with changing for valve positioner in thermal power plant, to solve the general of valve positioner
Sex chromosome mosaicism, and the reliability and maintainability of product are taken into account, the utility model proposes a kind of versatility, reliability and maintainability all
Relatively good valve positioner.Employ following technical scheme：A kind of universal valve controller, by valve motion data acquisition electricity
Road, ARM processors, relay, I/O circuits, encoder, shaft coupling and power supply composition.Valve positioner is set using modularization
Meter, in addition to encoder and shaft coupling, the function above part of valve positioner is arranged on different modules.
The operation principle of valve positioner is：Valve motion data acquisition circuit is connected with the motion sensor of valve, will
The physical quantity for characterizing valve location and torque delivers to arm processor；Arm processor runs Valve controlling and protection algorism, obtains
The action command of valve, outputs this to contactor；The motor of contactor control motor-driven valve or the pneumatic amplifier of pneumatic operated valve
Action so that valve is opened, closes or stop at some exact position.Data acquisition circuit, arm processor and contactor
Form closed-loop control.Arm processor is also connected to the automated system on upper strata by I/O circuits, can control valve in the distance
Door.The function of power supply is to provide different brackets and the dc source of specification to the above-mentioned functor of valve positioner.
Above-mentioned valve motion data acquisition circuit, on main control module, be designed with pulse, Gray code, millivolt potential,
Switching value, direct current equality input interface, can handle the output data from different measuring principle sensors, these sensor bags
Include encoder, Hall sensor, proximity switch, travel switch, optoelectronic switch, torque inductive pick-up, torque mechanical switch etc..
Above-mentioned arm processor, on main control module, arm processor receives the output of valve motion data acquisition circuit
Data, calculate the real time position and torque of valve, and run Valve controlling and protection algorism, realize the stroke and torque of valve
Control.
Above-mentioned relay, in drive module, for controlling the motor of electrically operated valve and the pneumatic of operated pneumatic valve to put
Big device, it is the power device of motor rotating and pneumatic amplifier Push And Release.
Above-mentioned I/O circuits, in I/O modules, the automated system for connecting valve upper strata.I/O circuits provide
Two kinds of connecting interfaces：Hardwire and fieldbus.Hardwire interface includes：On-off state, malfunction, switching value instruction,
FB (4~20mA) and CR (4~20mA).Field-bus interface is standard Profibus DP interfaces.
Above-mentioned encoder, on valve displacement connector, the position that can be substituted on original valve passes with torque
Sensor.The rotating cycle of connector is changed into Gray code by encoder, and is exported to main control module.
Above-mentioned shaft coupling, suitable for pneumatic operated valve, on the output shaft of pneumatic amplifier, the Direct Travel displacement of axle is turned
Change the rotating cycle of shaft coupling into.Encoder can be installed on shaft coupling, obtain Gray code output.
Compared with existing valve positioner, technical scheme provided by the utility model has the characteristics that：
Versatility is good.It not only can control all kinds of power type valves, and also operated pneumatic valve can be controlled, and substitution price is held high
Expensive pneumatic positioner；Both controllable switch operating valve or controllable adjustable operating valve；Nearly all valve in compatible thermal power plant
The stroke and torque sensor of door；And it can access fieldbus networks by the Profibus DP interfaces in I/O modules, make valve
Door turns into a slave station in field bus control system.It is current known, in existing industrial products, it there is no such practical new
Type occurs.
Good reliability.Drive module can extend adjustment type valve positioner using the two kinds of designs of machinery and solid-state relay
Working life.When there is following phenomenon, controller can rapid block system relay action concurrent fault alarm：Encoder event
Barrier；Valve crosses torque；Valve stall；Three-phase lack phase；Motor overtemperature；There is action without instruction；There is instruction ignore.
It is maintainable good.Arm processor, valve motion data acquisition circuit, I/O module, coding on valve positioner
Device, shaft coupling, contactor all can charged for replacement, after any one part replacement, controller can all devote oneself to work immediately, it is not necessary to
Readjust.In addition, arm processor independently separates work with valve motion data acquisition circuit；During valve powers off, data
Acquisition Circuit can continue to preserve valve location data, and after valve recovers power transmission, valve positioner, can be immediately without debugging again
Devote oneself to work.Function above, it is the characteristics of most of existing valve positioners do not possess.
The precision of stroke and Torque Control is higher.When making valve motion sensor using absolute value encoder, encoder
Precision be every turn of 1024~4096 Gray's yardages, valve can be sent 5~100,000 Gray codes, such as be compiled by 1 total travel
Code device sampling precision is 1 Gray code, then, the positional precision of valve stroke is 0.0001, is converted into valve angle (for butterfly
Valve), precision is in 0.01 radian, and for DN500 stop valve, travel position precision is 0.01mm；Similarly, according to this practicality
The Torque Control method of new proposition, high-precision Torque Control can be also realized with encoder.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
When Fig. 1 is accesses absolute value encoder, the connection figure of valve positioner and electric adjustable nodal pattern valve.
When Fig. 2 is accesses travel switch with Hall torque induction installation, the company of valve positioner and motor switch type valve
The structure chart connect.
Fig. 3 is the structure chart that valve positioner is connected with jettron type valve when accessing absolute value encoder.
Embodiment
【Embodiment 1】
The present embodiment combination accompanying drawing 1, to the utility model proposes valve positioner, valve stroke and Torque Control side
Method is described further.
As shown in figure 1, valve positioner is made up of main control module, drive module, I/O modules, power module, realize to one
The control of platform electric control valve.The controller carried on valve and motion sensor are removed, install the utility model proposes
Valve positioner, and absolute value encoder is installed on motor transmission shaft, by valve motion on its access controller main control module
The Gray code interface of information acquisition circuit.
In the present embodiment, the arm processor on main control module, with high-speed counting passage, the passage by hardware controls,
Do not limited by the processor scan period, frequency is up to 200kHz, and the missing inspection possibility to Gray code is minimum, ensure that Valve controlling
High accuracy.
In the present embodiment, the I/O circuits in I/O modules, to different automated systems, there is provided two kinds remotely with the spot
Connected mode, i.e. hardwire and fieldbus.
Hardwire：Hardwire I/O circuits provide 24 pin inserting type interfaces to automated system, including：On-off state, open
Pass amount instruction, FB (4~20mA), CR (4~20mA) and malfunction.DCS or PLC system are realized to valve by hardwire
The switch of door and continuous control, and obtain on off state, positional information and the malfunction of valve.
Fieldbus：Fieldbus functional circuit carries DP slave station chip SPC3, and the list of standard is provided to automated system
The pin Profibus DP communication interfaces of passage 9.Valve in FCS systems, equivalent to a standard on fieldbus networks from
Stand.
In the present embodiment, the encoder on valve output shaft, using absolute value encoder, in dead electricity situation energy
Normal output Gray code.Encoder is within the 10ms sampling times, and Gray's yardage of output is between 10~100, it is assumed that valve
The door total travel time is 60s, then total travel Gray yardage fully meets valve positioner to valve between 60000-600000
The required precision of door stroke and Torque Control.
In the present embodiment, valve positioner is controlled the position of valve as described below：
When main control module is upper for the first time electric, Zero calibration is carried out to encoder, it is then that valve is manual or electronic to fully closed
With fully open position, Gray's yardage A1 and A2 of the now encoder output of arm processor record.
The position opening degree instruction C sent from automated system that arm processor receives according to I/O modules, is converted
Into Gray's code instruction CG：CG=(A2-A1) C+A1.Meanwhile arm processor comparison coder output Gray code instantaneous value FG with
Gray code instruction CG, as FG ＜ CG, processor sends out close command to the open relay in drive module, drives valve to opening
Direction action；As FG ＞ CG, processor drives valve to closing to the pass relay hair close command in drive module
Direction acts；When | FG-CG | during ＜ 0.05% × (A2-A1), cut-out driving relay, now valve arrival specified location.
In the present embodiment, it is proposed that a kind of new valve torque control method.This method, it is not necessary to single torque
Induction installation or torque mechanical switch, but the Gray code exported by calculating the absolute value encoder on valve output shaft,
Obtain the opposing torque of valve.When torque instantaneous value exceedes limit value set in advance, the output of drive module is cut off, is realized
Control to valve torque.
For different valves, real-time Calculating Torque during Rotary is divided into velocity differentials algorithm and timer counter algorithm.Wherein, timing ga(u)ge
Number method is applied to common electrically operated valve；Velocity differentials method is applied on the electrically operated valve or operated pneumatic valve of super large torque, i.e.,
It is required that quick-break is to protect the occasion of valve.
The principle of fixed time method is as follows：
On asynchronous machine, the parameter expression of electromagnetic torque is
When the parameter and number of pole-pairs p constant of asynchronous motor U1, f1 and motor, electromagnetic torque TcmOnly depend on revolutional slip
s。
From above formula, the asynchronous machine of normal work, in voltage and constant frequency, the rotating speed of motor is only with being subject to
Opposing torque size is relevant.The normal work rotating speed of valve output shaft is detected by encoder, completes the asynchronous machine of switching process
In the case of by certain resistance, rotating speed maintains certain certain value.For quick detection drag characteristic, system uses external interrupt
Timing sampling method, it is determined that within the 10ms times by Gray's yardage be used as detection torque size.The motor of start-up course is completed,
Under by certain resistance, (10ms is adjustable) passes through in time rating Gray's yardage is constant, when there is external drag change
Under change, system can be completed to Gray code after 3 cycles (i.e. carry out in 30ms three times arithmetic average with smooth speed characteristics)
Several detections and judgement, maximum Gray code is shown as under minimum drag characteristic by number, different motor characteristics, voltage characteristic,
Under frequency characteristic and comprehensive external drag characteristic is certain by Gray's yardage.Maximum resistance characteristic shows as Gray
Code is 0 by number, that is, locked rotor characteristic occurs.So by Gray's yardage in the range of this, can directly converse suffered by valve
Opposing torque value size.
In addition, the expression formula of motor torque is
T=9549 × P/n
In above formula, T is motor output torque, and dimensional unit is Nm；P is the rated power of motor, and dimensional unit is W；n
It is the output speed of motor, dimensional unit rpm.Above formula shows：The direct inverse ratio of motor electromotive power output of normal operation
In the output speed of motor.That is, certain external load, corresponding to certain rotating speed.If in the very short time
It is interior, measure the change of motor output speeds, you can the drag torque now run into the hope of valve.
Velocity differentials method principle is as follows：
The Gray code first exported by encoder, the rotating speed of valve output shaft is calculated, then differential calculation is carried out to speed, obtained
Acceleration.Understood according to Newton classic mechanics formula F=ma, the acceleration of lower output shaft rotation is acted on by external force, with valve
Quality is inversely proportional, directly proportional to being acted on size by external force.Herein, m can be considered as valve inertia constant, valve weight, machine
Tool structure, valve damping form the size of m values together；So the size of acceleration, is directly proportional to the opposite force that valve is subject to
The size of square, then has：F (T)/D (T)=kA (T), in above formula, k is known valve inertia constant m, is thus calculated
The countertorque value being subject to valve.
Further, since differential speed is big by High-frequency Interference, due to the difference for mechanically connecting, loading in the sampling time, can go out
Existing larger bounce.Additionally, due to asynchronous machine starting process first to accelerate to peak speed, then reduction of speed arrives and load phase again
The rotating speed of adaptation, this process take around 1~2s.Therefore, velocity differentials can be completed after initial value is assigned in output in 1~2s
The start-up course fallen after rising, moment inspecting is loaded to the stationary value in a change, this value and encoder connection machine
Tool gap influence, it may appear that larger difference, this difference, should not be superimposed to the end be obstructed detection in.So every time
After action, it should corresponding opposite direction moment inspecting initial value is put a relatively low value, the inertia of different valves is different, detects
Torque initial value also can be different, to ensure that effect will not be added up because of inertia so that torque reaches protection act value.
In the present embodiment, valve positioner has following defencive function：Encoder fault；Phase sequence is reversed；Valve crosses torque；
Valve stall；Three-phase lack phase；Motor overtemperature；There is action without instruction；There is instruction ignore.When drive module detects main control module
When having any failure output, horse back block system relay action, to protect valve safe.Hereinafter, failure protection function is made
It is bright：
Encoder fault：Valve motion information acquisition circuit on main control module can't detect lattice within 5 scan periods
Thunder code inputs, output coder failure.
Phase sequence is reversed：Power module after electricity, detects main power source phase sequence, such as finds phase sequence and last time powered phase sequence on every time
Inconsistent, signal the arm processor to main control module, the actuating of relay in arm processor adjust automatically drive module,
To realize phase sequence self-adaption.
Valve crosses torque and stall：Arm processor on main control module obtains the real-time force of valve by calculating Gray code
Square value, such as real-time torque, which exceed, limits torque, and output valve crosses torque and stall failure.
Three-phase lack phase：Power module detects the three-phase voltage of main power source, such as finds a certain phase missing, signals to master control mould
Arm processor on block, export three-phase lack phase failure.
Motor overtemperature：Arm processor detection on main control module is embedded in temperature protection node in motor coil, when going out
During existing overtemperature, output motor overtemperature failure.
There is action without instruction：Drive module non-relay acts, and valve motion information acquisition circuit is within 10 cycles,
Detect that Gray code changes, arm processor output has action failure without instruction.
There is instruction ignore：Drive module has the actuating of relay, and valve motion information acquisition circuit is within 10 cycles,
Detect that Gray code is unchanged, arm processor output has instruction ignore failure.
【Embodiment 2】
The present embodiment combination accompanying drawing 2, to the utility model proposes the versatility of valve positioner be described further.
As shown in Fig. 2 valve positioner is made up of main control module, drive module, I/O modules, power module, realize to one
The control of platform motor switch type valve.Original controller on valve is removed, retains the travel switch carried and Hall torque
Induction installation, it is respectively connected to the switching value of valve motion information acquisition circuit and millivolt potential interface on main control module.
In the present embodiment, valve positioner is as described below to the Stroke Control of valve：
Main control module is for the first time after upper electricity, by valve it is manual or it is electronic arrive closed positions, then stroke is opened in place for debugging pass
Pass act, determine valve motion information acquisition circuit valve close in place contact it is closed.Valve is manual or electronic arrive
Fully open position, then debugging reach a travel switch action, determine that the valve of valve motion information acquisition circuit reaches a contact
It is closed.
Pass controls in place：I/O modules receive the closing valve signal that automated system is sent, and main control module is to drive module
On pass relay hair close command, motor operation valve is closed, when motion information acquisition electric circuit inspection is gone in place to pass
When Cheng Kaiguan is closed, the actuating of relay is closed in main control module cut-out, and valve closing process terminates.
Reach a control：I/O modules receive the opening valve signal that automated system is sent, and main control module is to drive module
On open relay hair close command, motor operation valve is opened, when motion information acquisition electric circuit inspection is to reaching position row
When Cheng Kaiguan is closed, main control module cuts off the actuating of relay, and valve opening procedure terminates.
In the present embodiment, the Torque Control of valve is realized by Hall torque induction installation.Pass through valve on main control module
The millivolt signal interface of door motion information acquisition circuit, reads the millivolt signal of torque induction installation output, and reality is calculated
When moment values, when the real-time moment values during valve switch exceed setting limit value when, cut off drive module on relay it is defeated
Go out, realize the Torque Control of valve.
In the present embodiment, valve positioner has following defencive function：Motion sensor failure；Phase sequence is reversed；Valve mistake
Torque；Valve stall；Three-phase lack phase；Motor overtemperature；There is action without instruction；There is instruction ignore.When drive module detects master
When control module has any failure output, horse back block system relay action, to protect valve safe.Hereinafter, to failure protection function
Explain：
Motion sensor failure：Valve motion information acquisition circuit on main control module detects within 5 scan periods
Pass is closed at reaching a travel switch in place, output campaign sensor fault；Within 5 scan periods, Hall is detected
Torque induction installation output millivolt potential is more than 5V DC, output campaign sensor fault.
Phase sequence is reversed：Power module after electricity, detects main power source phase sequence, such as finds phase sequence and last time powered phase sequence on every time
Inconsistent, signal the arm processor to main control module, the actuating of relay in arm processor adjust automatically drive module,
To realize phase sequence self-adaption.
Valve crosses torque and stall：Arm processor on main control module obtains the real-time of valve by calculating millivolt potential
Moment values, such as real-time torque, which exceed, limits torque, and output valve crosses torque and stall failure.
Three-phase lack phase：Power module detects the three-phase voltage of main power source, such as finds a certain phase missing, signals to master control mould
Arm processor on block, export three-phase lack phase failure.
Motor overtemperature：Arm processor detection on main control module is embedded in temperature protection node in motor coil, when going out
During existing overtemperature, output motor overtemperature failure.
There is action without instruction：Drive module non-relay acts, and valve motion information acquisition circuit is within 10 cycles,
Detect that all there is action failure pass in off-state, arm processor output with reaching a travel switch without instruction in place.
There is instruction ignore：Drive module has the actuating of relay, and valve motion information acquisition circuit is within 10 cycles,
Detect that closing in place or reach a travel switch is in closure state, arm processor output has instruction ignore failure.
【Embodiment 3】
The present embodiment combination accompanying drawing 3, to the utility model proposes the versatility of valve positioner be described further.
As shown in figure 3, valve positioner is made up of main control module, drive module, I/O modules, power module, realize to one
The control of platform jettron type valve.The controller carried on operated pneumatic valve and motion sensor are removed, it is new that this practicality is installed
The valve positioner that type proposes, and shaft coupling and absolute value encoder are installed on pneumatic output shaft, encoder is accessed into master control
The Gray code interface of valve motion information acquisition circuit in module.
In the present embodiment, valve positioner is as described below to the Stroke Control of valve：
When main control module is upper for the first time electric, Zero calibration is carried out to encoder, then arrived valve manually or pneumatically fully closed
With fully open position, Gray the yardage A1 and A2 of the now encoder output of arm processor record, pass Gray in place is calculated respectively
Yardage：B1=(A2-A1) C1+A1, and reach a signal B2=A2- (A2-A1) (1-C2).In calculation formula, C1 and C2 are
Adjustable parameter, it can be adjusted according to valve characteristic and field application environment.C1 and C2 is introduced, can effectively be avoided in main control module
Because the valve body that the faint inertia belt of drive device comes damages after cut-out output order.
Pass controls in place：I/O modules receive the closing valve signal that automated system is sent, and main control module is to drive module
On pass relay hair close command, motor operation valve is closed, when motion information acquisition electric circuit inspection is defeated to encoder
During the Gray code instantaneous value FG ＜=B1 gone out, the actuating of relay is closed in main control module cut-out, and valve closing process terminates.
Reach a control：I/O modules receive the opening valve signal that automated system is sent, and main control module is to drive module
On open relay hair close command, motor operation valve open, when motion information acquisition electric circuit inspection is defeated to encoder
During the Gray code instantaneous value FG ＞=B2 gone out, main control module cuts off the actuating of relay, and valve opening procedure terminates.
In the present embodiment, using the utility model proposes valve torque control method, to operated pneumatic valve carry out torque
Control, real-time Calculating Torque during Rotary use velocity differentials method, the method statement in detail in embodiment 1.
In the present embodiment, valve positioner has following defencive function：Encoder fault；Valve crosses torque；Have without instruction
Action；There is instruction ignore.When drive module detects that main control module has any failure to export, horse back block system relay moves
Make, to protect valve safe.Hereinafter, failure protection function is explained：
Encoder fault：Valve motion information acquisition circuit on main control module can't detect lattice within 5 scan periods
Thunder code inputs, output coder failure.
Valve crosses torque：Arm processor on main control module obtains the real-time moment values of valve by calculating Gray code,
Torque is limited as real-time torque exceedes, output valve crosses torque failure.
There is action without instruction：Drive module non-relay acts, and valve motion information acquisition circuit is within 10 cycles,
Detect that Gray code changes, arm processor output has action failure without instruction.
There is instruction ignore：Drive module has the actuating of relay, and valve motion information acquisition circuit is within 10 cycles,
Detect that Gray code is unchanged, arm processor output has instruction ignore failure.
1~embodiment of integrated embodiment 3, the utility model proposes a kind of universal valve controller.The utility model has
There is good reliability, replacing is easy to maintenance, control accuracy is high.
Claims (8)
- A kind of 1. universal valve controller, it is characterised in that：Using modularized design, by main control module, drive module, I/O moulds Block, encoder, shaft coupling and power module form, wherein：Main control module, it is made up of arm processor and valve motion data acquisition circuit, is the Core Feature mould of valve positioner Block；Arm processor performs the control and protection algorithm of valve；The stroke and torque sensor phase of data acquisition circuit and valve Even, the pulse of collection sensor output, Gray code, millivolt potential, switching value, DC level signal；Drive module, by master control module controls, it is made up of relay and its Minimal Realization circuit；Relay in drive module is Drive electrically operated valve motor positive and inverse, and the power amplifying device of operated pneumatic valve pneumatic amplifier action；I/O modules, it is made up of hardwire I/O circuits and fieldbus functional circuit；One end of I/O modules and main control module phase Even, the other end opens remote operation interface to upper strata automated system；Encoder, on the displacement connector of valve, valve is opened and turned with the rotating cycle of connector in closing process Change Gray code into, and be uploaded to the valve motion data acquisition circuit of main control module；Shaft coupling, on the output shaft of pneumatic operated valve, the Direct Travel displacement of output shaft is converted into the rotation circle of shaft coupling Number；Power module, it is made up of alternating current-direct current transformer with micro battery, dc source is provided to valve positioner.
- 2. universal valve controller according to claim 1, it is characterised in that：Valve positioner can be used for controlling switch Valve, regulating valve, rotary motion valve, linear motion valve, motor-driven valve, pneumatic operated valve；Above Valve controlling function can be by main control module Wire jumper is set.
- 3. universal valve controller according to claim 1, it is characterised in that：Above-mentioned main control module uses low consumption circuit Design, arm processor independently separate work with valve motion data acquisition circuit；Valve power off during, data acquisition circuit by Storage battery power supply, valve stroke caused by recording and preserving manually-operated valve door changes, and arm processor enters dormancy；Using The benefit of design is that after valve recovers power supply, valve positioner can devote oneself to work immediately without debug again above.
- 4. universal valve controller according to claim 1, it is characterised in that：The valve motion data of above-mentioned main control module Acquisition Circuit, pulse, Gray code, millivolt potential, switching value, DC level input interface are designed with, can connect and be transported with lower valve Dynamic sensor：Encoder, Hall sensor, proximity switch, travel switch, optoelectronic switch, torque induction installation, torque machinery are opened Close.
- 5. universal valve controller according to claim 1, it is characterised in that：The relay of above-mentioned drive module installation, According to the difference of valve event type, it is divided into two kinds；1st kind is mechanical relay, suitable for switching mode valve；2nd kind is solid State relay, suitable for the adjustment type valve of frequent movement.
- 6. universal valve controller according to claim 1, it is characterised in that：Above-mentioned I/O modules, both it is subjected to upper strata The hardwire control of automated system, is also subjected to fieldbus communication protocol control；Two kinds of I/O modules far grasp interface： Push-in 24 pin hardwire interface, 9 pin Profibus DP field-bus interfaces.
- 7. universal valve controller according to claim 1, it is characterised in that：Above-mentioned encoder, according to valve supply rings The difference in border, it is divided into two kinds：1st kind is incremental encoder, suitable for valve powered stable occasion；2nd kind is absolute encoder Device, suitable for the frequent dead electricity of valve or the occasion that need to often overhaul.
- 8. universal valve controller according to claim 1, it is characterised in that：Above-mentioned power module has two kinds of direct currents defeated Go out mode, the first way of output is：When valve main power source is normal, the alternating current-direct current transformer of power module changes main power source Used for direct current for controller；Second of way of output be：During valve powers off, from the battery of power module to master control mould The data acquisition circuit and incremental encoder of block, Hall sensor power supply；The shape of power module energy automatic detection main power source State, the no-harass switch between two kinds of way of outputs.
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| CN201620845998.XU CN206684505U (en) | 2016-08-08 | 2016-08-08 | A kind of universal valve controller |
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| CN201620845998.XU CN206684505U (en) | 2016-08-08 | 2016-08-08 | A kind of universal valve controller |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109240134A (en) * | 2018-08-10 | 2019-01-18 | 黄昕源 | A kind of Internet of Things intelligent valve system |
| CN109629634A (en) * | 2019-01-23 | 2019-04-16 | 山东华通环境科技股份有限公司 | A kind of constant flux water supply apparatus control system and control method |
| CN111443640A (en) * | 2020-04-18 | 2020-07-24 | 烟台华晟电子科技有限公司 | Valve position controller based on network communication modularization |
| CN112797224A (en) * | 2020-12-30 | 2021-05-14 | 四川红华实业有限公司 | Method for recovering self-checking working state of VAT electric regulating valve |
| CN113110278A (en) * | 2021-04-13 | 2021-07-13 | 珠海格力智能装备有限公司 | Information interaction method and device, storage medium and processor |
| CN116068946A (en) * | 2023-03-15 | 2023-05-05 | 苏州成科自控设备有限公司 | Electric valve controller, visual programming system and visual programming method |
-
2016
- 2016-08-08 CN CN201620845998.XU patent/CN206684505U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109240134A (en) * | 2018-08-10 | 2019-01-18 | 黄昕源 | A kind of Internet of Things intelligent valve system |
| CN109629634A (en) * | 2019-01-23 | 2019-04-16 | 山东华通环境科技股份有限公司 | A kind of constant flux water supply apparatus control system and control method |
| CN111443640A (en) * | 2020-04-18 | 2020-07-24 | 烟台华晟电子科技有限公司 | Valve position controller based on network communication modularization |
| CN112797224A (en) * | 2020-12-30 | 2021-05-14 | 四川红华实业有限公司 | Method for recovering self-checking working state of VAT electric regulating valve |
| CN112797224B (en) * | 2020-12-30 | 2023-01-24 | 四川红华实业有限公司 | Method for recovering self-checking working state of VAT electric regulating valve |
| CN113110278A (en) * | 2021-04-13 | 2021-07-13 | 珠海格力智能装备有限公司 | Information interaction method and device, storage medium and processor |
| CN113110278B (en) * | 2021-04-13 | 2022-05-27 | 珠海格力智能装备有限公司 | Information interaction method and device, storage medium and processor |
| CN116068946A (en) * | 2023-03-15 | 2023-05-05 | 苏州成科自控设备有限公司 | Electric valve controller, visual programming system and visual programming method |
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