CN108474243A - Wireless control valve - Google Patents
Wireless control valve Download PDFInfo
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- CN108474243A CN108474243A CN201680079224.3A CN201680079224A CN108474243A CN 108474243 A CN108474243 A CN 108474243A CN 201680079224 A CN201680079224 A CN 201680079224A CN 108474243 A CN108474243 A CN 108474243A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
- E21B34/025—Chokes or valves in wellheads and sub-sea wellheads for variably regulating fluid flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
Abstract
Control valve（12）Including fluid valve bodies（41）, have for receiving the entrance of fluid, the outlet for fluid to be discharged, the fluid flow passages for connecting entrance and exit and controllable restricting element（36）, move the sectional area of at least part of stream selectively to change flow path, valve actuator（10）It is connected to valve body and in response to controlling signal, sensor（20）At least one signal for generating at least one of the absolute pressure represented in fluid flow passages, gauge pressure, pressure difference, flow and temperature, communication system is for receiving configuration information and transmission state information, controller（22）Comprising processor is used to receive the signal and configuration information, is used to form the output depending on configuration information and received signal, and be used to form the status information.
Description
Cross reference to related applications
The application is submitted on January 10th, 2003 and entitled " ACTUATOR FOR WELL-HEAD VALVE OR OTHER
SIMILAR APPLICATIONS AND SYSTEM INCORPORATING SAME（For well-head valve or other similar applications
Actuator and system comprising the actuator）" on October 11st, 2005 bulletin be U.S. Patent number 6953084 the U.S. it is special
10/340017 inventor having the same of sharp application number, during the disclosure of which is hereby incorporated by reference in its entirety by reference.
The application further relates to and asks to enjoy the U.S. Provisional Application No. 62/257018 and in November, 2016 that on November 18th, 2015 submits
The priority for the U.S. Patent Application No. 15/355636 submitted for 18th, in being hereby incorporated by reference in its entirety by reference.
Technical field
This application involves the integrated process control valve with radio control subsystem, radio control subsystem can be controlled and be worn
The flowing of the fluid of valve is crossed, and the various parameters of fluid can be monitored.
Background technology
In commercial natural gas production industry, network of gas collection pipes is usually by tens to hundreds of of local geographic area
Natural gas surface well links together and forms branch together.Natural gas is fed into public affairs by independent well via network of gas collection pipes
Output position altogether.The well can be possessed by several different land owners and/or the mining right owner, they can be natural by it
Gas product is sold to natural gas commercial supplier.Commercial supplier will usually be bought from soil or right owner according to its demand
Natural gas.This provides adjusting and monitors the needs of the natural gas production from each well.Even if the commercially available person of natural gas
Possess soil or mining right, still want monitoring and/or adjusts the production of each well to control its supply.General it is desired that day
If right gas output is less than the combination of the maximum productivity of dry-well.This needs can be due to periodical season trend and other economic originals
Thus change.
In order to adjust the production output of each independent well, the branch collection pipe for each independent well usually has arrangement
At the flow adjustment valve and gas flow transducer that fluid is serial.Gas flow transducer is pointed out to flow through the amount of the natural gas of collecting pipe.It adjusts
Control valve provides variable degree, forms the restricted orifice in collecting pipe, and thus sets the natural gas flow rate in collecting pipe.
Invention content
The literature is generally described the integrated process control valve with radio control subsystem, and radio control subsystem can be controlled
Fluid processed passes through the flowing of valve, and can monitor the various parameters of fluid.
In a first aspect, control valve includes fluid valve bodies, have for receiving the entrance of fluid, being used for discharge stream
The outlet of body, the fluid flow passages for connecting entrance and exit and controllable restricting element, restricting element move to have
The sectional area for selectively changing at least part of stream of access is connected on valve body and in response to control signal come for there is selection
Ground movement restricting element valve actuator, for generate the absolute pressure represented in fluid flow passages, gauge pressure, pressure difference,
The sensor of at least one signal of at least one of flow and temperature, for receiving configuration information and transmission state information
Communication system and controller comprising processor, processor are used to form and take for receiving the signal and configuration information
Certainly in the output of configuration information and the signal received, and it is used to form status information.
In the second aspect according to aspect 1, the sensor includes being arranged in the inlet of valve body to be used to generate generation
The first pressure sensor of first signal of the Fluid pressure at table entry is arranged in the exit of valve body to be used to generate representative
The second pressure sensor of the second signal of the Fluid pressure in exit, for receiving the first signal and the second signal and use
In formed depending on received signal output receiver, and the controller be configured to it is true from the first signal and the second signal
The fixed fluid-pressure drop across valve body stores scheduled fluid-pressure drop value, by the fluid-pressure drop value of determining fluid-pressure drop and storage
It compares, and represents the difference signal of the difference between fiducial value for generating its size, and determine control signal to apply
Actuator is added to cause it to move restricting element, thus changes the fluid-pressure drop across valve body, more closely to match storage
Fluid-pressure drop value, and reduce difference signal size.
In the third aspect according to aspect 2, the controller includes processor, is used to store predetermined temperature value, incites somebody to action
The signal of the temperature T1 of fluid is represented compared with the temperature value of storage and represents difference between fiducial value for generating its size
Different difference signal generates control signal to be applied to actuator to cause its to move restricting element, thus changes and is flowed in access
The temperature of dynamic fluid with the temperature value that tight fit stores, and reduces the size of difference signal.
In the fourth aspect according to aspect 1 to any one of aspect 3, control valve further includes representing stream for generating
The temperature sensor of the temperature signal of fluid temperature (F.T.) in body logical circulation road, and the stream for generating the fluid ability for representing valve body
The throttling element position sensor of dynamic signal, and the wherein described controller are configured to from signal, temperature signal and flow signals
Determine the flow rate of the fluid in access.
According in terms of the 5th of aspect 1 to any one of aspect 4, the processor be suitable for storing predetermined flow rate value,
Predetermined flow rate is compared with the flow rate value of storage and is used to generate the difference signal for the difference that its size represents between fiducial value,
And control signal is generated to be applied to actuator, to cause it to move restricting element, thus changes flow rate and carry out closer matching
The flow rate value of storage, and reduce the size of difference signal.
According in the aspect of the 6th of aspect 1 to any one of aspect 5, control valve further includes for promoting to the valve
The power system of one or more of dynamic device, the sensor, the communication system and controller energy supply, wherein from institute
The instantaneous power for stating power system acquisition is no more than 3 watts.
According in the aspect of the 7th of aspect 1 to any one of aspect 6, control valve further includes being configured to needing
Protect the valve actuator, the sensor, the communication system in the location at risk of the equipment of 1 grade of Class I, Division
The capsule of system and the controller.
In the eighth aspect according to aspect 1 to any one of aspect 7, the processor is disposed for receiving operable
At the program instruction for executing control function, control function includes that pressure adjusts, flows control, horizontal control and spool lifts control
One or more of.
According in terms of the 9th of aspect 1 to any one of aspect 8, when the status information includes the failure of prediction
Between, the identity of part, identity that is preventative or remedying sex service, and confirm reduced functionality until maintenance or dimension can be provided
One or more of plan of time of shield.
According in the aspect of the tenth of aspect 1 to any one of aspect 9, configuration information is set including flowing set-point, temperature
Set one or more in point, pressure setpoint, functional confirmation of reduction, the maintenance time of plan and request additional data
It is a.
In the tenth one side according to aspect 1 to any one of aspect 10, the communication system includes wireless transceiver
Come for wirelessling receive configuration information and transmission state information.
According in the aspect of the 12nd of aspect 1 to any one of aspect 11, the communication system includes having for relying on
Line connects to receive the wireline transceiver of configuration information and transmission state information.
In the 13rd aspect, the method for controlling process fluid, including control valve is provided comprising fluid valve
Body, valve body have logical for receiving the fluid flowing of the entrance of fluid, the outlet for fluid to be discharged, connection entrance and exit
Road and controllable restricting element move the sectional area of at least part of stream to selectively change access, connection
Come valve actuator, the controller for selectively moving restricting element on to valve body and in response to control signal, with process
Control valve is integrated and includes processor, and processor is used to form for receiving the signal and configuration information depending on matching confidence
The output of breath and received signal, and it is used to form status information, a system is received by the communication system integrated with control valve
Row configuration information is sensed absolute pressure, gauge pressure, pressure in fluid flow passages by the sensor integrated with control valve
At least one of difference, flow and temperature are used as sensor signal, by associated with the controller for being integrated in control valve
Processor and output based on configuration information is determined based on the signal and configuration information, is actuated by valve actuator and based on output
The movement of controllable restricting element come selectively change the sectional area of at least part of stream of access, by the processor and
A series of status informations are determined based on the sensor signal and the configuration information, and are believed by communications system transmission state
Breath.
In the fourteenth aspect according to aspect 13, the sensor signal includes based on the inlet for being arranged in valve body
First pressure sensor and represent inlet Fluid pressure first pressure signal, based on the exit for being arranged in valve body
Two pressure sensors and represent exit Fluid pressure second pressure signal, wherein this method further include receive described first
Pressure signal and the pressure signal, and it is used to form the output depending on receiving signal, believed based on first pressure by controller
Number and second pressure signal determine across valve body fluid-pressure drop, by controller store predetermined fluid voltage drop value, by controller will
Determining fluid-pressure drop is determined the difference between its size represents fiducial value by controller compared with the fluid-pressure drop value of storage
Difference signal, and restricting element is moved by valve actuator and changes the fluid-pressure drop across valve body, with closer matching storage
The fluid-pressure drop value deposited.
According in the aspect of the 15th of aspect 14, this method further includes by controller storage predetermined temperature value, by controlling
Device will represent the temperature signal of fluid temperature (F.T.) compare with the temperature value of storage, determined by controller its size represent fiducial value it
Between difference difference signal, restricting element moved by valve actuator change the fluid temperature (F.T.) flowed in access, with closer
Match the temperature value of storage.
According in the aspect of the 16th of aspect 13 to any one of aspect 15, this method further includes by controller and being based on
Determine the temperature signal for the temperature for representing the fluid in fluid flow passages, by controller and based on throttling element position sensor
It determines the flow signals for the fluid ability for representing valve body, and sensor signal, temperature signal and flowing is based on by controller and believed
Number determine access in fluid flow rate.
According in the aspect of the 17th of any one of aspect 13 to 16, method further includes storing predetermined flow rate by controller
Value, between being compared with storage flow rate value by controller determining flow rate, determine that its size represents fiducial value by controller
The difference signal of difference, and control signal is provided to be applied to actuator, to cause actuator movement throttling member by controller
Part changes flow rate, with the flow rate value of closer matching storage.
According in the aspect of the 18th of aspect 13 to any one of aspect 17, method further includes that can be grasped by controller reception
It includes that pressure is adjusted, flowing control, level controls and the program instruction of the control function of spool lifts control to be made execution.
According in the aspect of the 19th of aspect 13 to any one of aspect 19, the status information includes the failure of prediction
Time, the identity of part, identity that is preventative or remedying sex service, and confirm it is reduced it is functional until can provide maintenance or
One or more of plan of time of maintenance.
According in the aspect of the 20th of aspect 13 to any one of aspect 19, configuration information includes flowing set-point, temperature
Spend set-point, pressure setpoint, functional confirmation of reduction, plan maintenance time and request additional data in one or
It is multiple.
In the 20th one side according to aspect 13 to any one of aspect 20, the communication system includes wireless receiving and dispatching
Device, it includes wirelessling receive one by wireless transceiver to receive a series of configuration informations by the communication system integrated with control valve
Collection of configuration information, and include that status information is wirelessly transmitted by wireless transceiver by communications system transmission status information.
According in the aspect of the 22nd of aspect 13 to any one of aspect 22, the communication system includes wired transmitting-receiving
Device, it includes relying on wired connection by wireline transceiver to receive a series of configuration informations by the communication system integrated with control valve
It receives a series of configuration informations, and by communications system transmission status information includes being transmitted by wired connection by wireline transceiver
Status information.
In the 23rd aspect, the valve that electricity actuates includes electric notor including multiple gears suitable for rotating output shaft
Reducing gear train, multiple gears include being exported by exporting shaft-driven input gear and rotation, and multiple gears are suitable in electric notor
Amplification is suitable for controlling fluid stream therebetween through from input gear to the power of rotation output, valve when rotating output shaft, and valve includes valve
Shell and valve member, valve chest limit flow passage, and valve member can move in valve body between open position and closed position,
To control the aperture of flow passage, spring is arranged to valve being pushed into open position and one in closed position, and brake is being beaten
Enough resistances are provided when open position to overcome spring effect to keep the current location of valve, and wherein electric notor has enough
Rotary output force overcomes the resistance of brake when in the open position to move valve, is represented in fluid flow passages for generating
At least one of absolute pressure, gauge pressure, pressure difference, flow and temperature at least one signal sensor, for connecing
The communication system of configuration information and transmission state information, and the controller including processor are received, processor is configured to receive institute
Signal and configuration information are stated, determines the output depending on configuration information and received signal, and determine status information.
In the twenty-fourth aspect according to aspect 23, the sensor includes being arranged in the inlet of valve body to be used to produce
The first pressure sensor of first signal of the raw Fluid pressure for representing inlet is arranged in the exit of valve body to be used to generate
Represent the second pressure sensor of the second signal of the Fluid pressure in exit, for receiving the first signal and the second signal
And it is used to form the receiver of the output depending on received signal, and the controller is configured to believe from the first signal and second
Number determine across valve body fluid-pressure drop, store predetermined fluid voltage drop value, by the fluid-pressure drop of determining fluid-pressure drop and storage
Value compares, and the difference signal of the difference between fiducial value is represented for generating its size, and generates control signal
Actuator is applied to cause it to move restricting element, thus changes the fluid-pressure drop across valve body, more closely to match storage
The fluid-pressure drop value deposited, and reduce the size of difference signal.
According in the aspect of the 25th of aspect 24, the controller is further configured to storage predetermined temperature value, incites somebody to action
The signal of the temperature of fluid is represented compared with the temperature value of storage and represents difference between fiducial value for generating its size
Difference signal, generate control signal come be applied to actuator with cause its move restricting element, thus change access in flow
Fluid temperature, with tight fit store temperature value, and reduce difference signal size.
According in the aspect of the 26th of aspect 23 to any one of aspect 25, the valve that electricity actuates further includes for generating
The temperature sensor of the temperature signal of the fluid temperature (F.T.) in fluid flow paths is represented, and for generating the energy of flow for representing valve body
The throttling element position sensor of the flow signals of power, and the wherein described controller are configured to from signal, temperature signal and stream
Dynamic signal determines the flow rate of the fluid in access.
According in the aspect of the 27th of aspect 23 to any one of aspect 26, it is predetermined that the processor is configured to storage
Flow rate value, the difference that predetermined flow rate is compared with the flow rate value of storage and is used to generate the difference that its size represents between fiducial value
Xor signal, and control signal is generated to be applied to actuator, to cause it to move restricting element, thus changes flow rate and come tightlier
The flow rate value of close matching storage, and reduce the size of difference signal.
In the twenty-eighth aspect according to aspect 23 to any one of aspect 27, the valve that electricity actuates further includes for institute
The power system of one or more of valve actuator, the sensor, the communication system and described controller energy supply is stated,
In from the power system obtain instantaneous power be no more than 3 watts.
Including being configured to needing according to the valve that in the aspect of the 29th of aspect 23 to any one of aspect 28, electricity actuates
Class I, the location at risk of the equipment of 1 grades of Division is wanted to protect the valve actuator, the sensor, the communication
The capsule of system and the controller.
According in the aspect of the 30th of aspect 23 to any one of aspect 29, the processor is configured to receive operable
At the program instruction for executing control function, control function includes that pressure adjusts, flows control, horizontal control and spool lifts control
One or more of.
In the 30th one side according to aspect 23 to any one of aspect 30, the status information includes the event of prediction
Downtime, the identity of part, identity that is preventative or remedying sex service, and confirm reduced functionality until maintenance can be provided
Or one or more of the plan of time safeguarded.
According in the aspect of the 32nd of aspect 23 to any one of aspect 31, the communication system includes wireless receiving and dispatching
Device is come for wirelessling receive configuration information and transmission state information.
According in the aspect of the 33rd of aspect 23 to any one of aspect 32, the communication system includes for relying on
Wired connection receives the wireline transceiver of configuration information and transmission state information.
System and technology as described herein can provide one or more following advantages.First, system can provide local process
Control is provided according to dynamic current economic situation and from the ability of remote center's site management production of hydrocarbons.Second, be
System can be used for making not being full automatic upstream oil gas process automation.Pneumatic actuator, individually sensing can be used in third, system
Device and individual control unit provide the improved functionality better than valve control.4th, system can reduce installation and debugging when
Between.5th, system can reduce the discharge associated with the deflation by pneumatic actuator and useless in position changes in demand every time
Material resource.
The details of one or more embodiments is proposed in the accompanying drawings and the description below.Other feature and advantage will be from descriptions
And attached drawing, and from claim it is clear.
Description of the drawings
Fig. 1 is the schematic plan view for the example well head system for being incorporated to the valve that example electricity actuates.
Fig. 2 is what example electricity actuated（Valve）Isometric view.
Fig. 3-4 is the section for the valve that example electricity actuates, and wherein section view is shown from a front surface and a side surface.
Figures 5 and 6 are the section of example electrical actuator.
Fig. 7 is the section of example electrical actuator.
Fig. 8 is the amplification section of the example valve portion for the valve that example electricity actuates.
Fig. 9 illustrates the example seal arrangement for example valves.
Figure 10 is the decomposition assembled view of example seal arrangement.
Figure 11 is the isometric view of the internal component of example electrical actuator.
Figure 12 is example electricity（Actuator）Internal component side view.
Figure 13-14 is the front view and rearview of the internal component of example electrical actuator.
Figure 15 is the block diagram of example natural gas well production system.
Figure 16 is another block diagram of valve and example pile-up valve control module that example electricity actuates.
Figure 17 A-17B are the partial sectional view of valve and pile-up valve control module that example electricity actuates.
Figure 18 is the flow chart using the instantiation procedure of integrated control module operation example electrical actuator valve.
Specific implementation mode
This document describes the system of the remote control for fluid valve actuator and technologies.Generally, electrical actuator valve
It may include control, power, communication and sensing subsystem, so that teleworker can configure, monitors and receive/flow automatically
The status information of body valve, fluid valve can be located remotely from operating personnel, power level structure and/or communication infrastructure.
Fig. 1 illustrates example natural gas well production system 14, for for example electrical actuator 10 exemplary application and
Operating environment.The production that well-head valve 12 adjusts gas production 16 via collecting pipe 18 exports.Well-head valve 12 is sensed with air-flow
Device 20 is serially mounted in collecting pipe 18 at fluid.(its usual range exists for the aperture of well-head valve 12 and the gas pressure of well 16
About 10 between 900psi, or even for most of producing well highers) determine natural gas flow rate across collecting pipe 18.Gas
Flow sensor 20 measures the amount of natural gas for flowing through pipe 18.The electricity feedback for the flow rate for representing sensing is provided to electricity by gas flow transducer 20
Sub-controller 22 is come the closed-loop control that is used on electrical actuator 10 and well-head valve 12.
Since well 16 can be located remotely from commercial power sources, therefore system 14 is shown to include local power supply, generally includes small too
Positive energy panel 24 and battery 26.Solar panel 24 generates small power supply, and 26 store power of battery.Advantageously, electrical actuator 10
Replaceable Pneumatic actuation system, without any additional power or power generation, if it is desired to, existing local electricity is used only
Source.Therefore, it is not necessary to additional cost is wasted in power generation, and the present invention can be used as replacing Pneumatic actuation at existing well-head valve
The transformation device of system.In some embodiments, it may include the additional extension of power generation or storage capacity.
In Fig. 1, it is indicated that two individual controllers 22,82, but if it is expected, these can be integrated into single control group
In part.In some embodiments, two individual controllers 22,82 can be used for being supplied to both modernization system and new system.
Well-head valve 12 can be linearly translatable valve, rotary valve or other movable/orientable valves.Referring to Fig. 2-4 and 8,
Shown well-head valve 12 be shown as include valve chest 28 and linearly translatable valve member 20 linear-type.Valve chest 28 includes limiting
The valve body 41 of flow passage 32.Flow passage 32 extends between the pairs of mounting flange 32 on the end of valve body 41, and prolongs
Extend through them.Mounting flange 32 is suitable for well-head valve 12 being mounted on collecting pipe 18.As shown, valve member 20 may include list
Only component comprising plunger member 36, and the elongated valve stem 38 from the extension of plunger member 38.Valve rod 38 extends through valve chest
20, and acted on it by electrical actuator 10.Selective detent force is transferred to plunger member 36 by valve rod 38 from electrical actuator 10.Plug
Component 36 is located at along flow passage 32 in cover 42, to provide the restricted orifice for adjusting the flowing across valve.Plunger member 36 can be complete
Centre position between complete closure and full open position, and therebetween is linearly translated toward and away from valve seat 40.Piston part
Part 36 stops all flowings when in the fully closed position, and allows maximum fluidity when in full open position.
In order to provide the installation of movable valve member 20, valve chest 38 can be made of more than one piece, including valve body 41, radially be constrained
With the metering cover 42 of the movement of guiding valve plunger member 36, and the valve deck 44 of sealing arrangement 46 is radially constrained and is supplied to.It is close
Envelope arrangement 46, which provides, prevents the static seal and dynamic sealing that natural gas is leaked from valve 12.Authorize U.S. of Don Arbuckle
A suitable sealing arrangement for preventing the natural gas leaking in valve is illustrated in state's patent No. 6161835, the patent
Complete disclosure is incorporated by reference into.
Referring to Fig. 9-10, sealing arrangement 46 includes extending through and wrapping the pressuring annular piston 47 of valve rod 38.Piston 47
A face acted on it by the process fluid being contained in valve flow access 32, with pressurized containment in sealant cavity 48
Sealing lubrication agent fluid.Piston 47 includes the sleeve part 49 for accommodating airtight and watertight padding.The periphery of piston 47 carries O-ring packing
50, for preventing the connection between process fluid and lubricant.If any, the position that O-ring packing 50 is located at
Expection piston motion it is few, and therefore this can be recognized as static seal for actual purpose.Another static O-ring sealing
Part 51 is between valve body 41 and valve deck 44, for preventing the leakage from sealant cavity 48.Therefore, two O-ring packings
50,51 serial arrangements, and the standby of redundancy is provided to prevent process fluid from being leaked via sealant cavity.
The airtight and watertight padding being contained in piston sleeve part 49 includes being arranged to the serial pairs of dynamic O-ring of fluid
Sealing element 52, spacer element 53, pairs of sealing maintenance washer 54, PTFE guiding sleeves 55, snap collar 56 and maintenance washer 57.
Snap collar 56 is snapped into the groove in piston sleeve part 49, and by airtight and watertight padding, maintenance is in place in an axial direction.PTFE guide sleeves
Pipe 55 is fitted close around valve rod 38, and the low friction to provide valve member 30 is slided.The sealing maintenance washer 54 of spacer element 53
Axially spaced O-ring packing 52 provides the balance and maintenance of sealing element 52.Port 58 extends through spacer element 53,
So that the valve rod 38 between the lubricant wrapping sealing element 52 of pressurization cylindrical annular so that lubricant is in each dynamic sealing
On part 52.
Lid 59 is provided, filler and piston are surrounded, to prevent dust and other external contaminants from destroying sealing arrangement 46.
The level of lubricant can be manually reviewed except uncapping 59, this points out that sealing element 50,51,52 works how well.Specifically,
The end of piston sleeve part act as sealant level indicator 61.When sleeve ends or sealant level indicator 61 and valve
When the top surface of lid 44 flushes or is coplanar, suitable sealant lubricant is contained in sealant cavity 48.If sealant level refers to
Show that device 61 is increased to the top face of valve deck 44 since axial piston is mobile, then this state points out that sealant has leaked out.Such as
Fruiting period is hoped, can be provided along the outer surface of piston sleeve part 49 and be separated scale, to provide the digital indication of Lubricant levels.It is adjoint
Sealing arrangement 46 provides several advantages, including is easy to manufacture and assembles, and prevents pollutant from reaching sealing arrangement, and point out
The integral mechanism of sealing lubrication agent level.
Well-head valve 12 includes the spring 60 for movable valve member 30 to be biased into open position or closed position.Such as Fig. 3
Shown in 8, spring 60 is shown as steel helical spring, is arranged to valve member 30 being biased into closed position.Spring housing 62 is pacified
Spring 60 is stored and supported between electrical actuator 10 and valve body 41.Spring 60 is supported by one end of spring housing 62, and
It is supported on the spring seat board 64 supported by actuator rod 66.One end of actuator rod 66 engages valve rod 38, and the other end has
Drive rack 68.
Sleeve part 67 is provided, is slided into actuator rod 66 so that sliding tooth with 11-13, drive rack 68 referring to Fig. 3
Item 68 can be rotated about actuator rod 66.Thrust bearing 70 more preferably ensures rotating freely for drive rack 68, particularly due to its
It is axially maintained in place by waved spring 71.Sleeve part 67 is constrained in an axial direction mounted on actuator rod 66 and waved spring 71
On pairs of nut 69 between, sleeve part 67 and drive rack 68 are biased into consolidating in actuator rod 66 by waved spring 71
Positioning is set.The arrangement allows for rotating freely for drive rack so that the power from spring 60 will not cause drive rack 68 to be turned round
Turn, thus prevents premature abrasion, but drive rack is also maintained at the fixation axial position in actuator rod by it.Waved spring 61
It is also slightly compressed when valve member 30 contacts seat, thus reduce the impact load generated on gear.For rotational energy to be transformed into
Another of the rack-and-pinion mechanism of linear movement is alternatively ball screw framework, and this and other trnasistion mechanisms are available
Make alternative.
It should be noted that spring housing 62 and spring 60 are shown as the part of well-head valve 12 in fig. 8.In some embodiments, bullet
Spring shell 62 and spring 60 can be the part of electrical actuator, and/or be integrated into the component of electrical actuator or valve.In either case
Under, spring 60 can be biased on the valve that power is actuated to electricity, and either directly or indirectly useful effect in valve plug component 36 and subtracts
In 76 the two of fast gear train.
Exemplary electrical actuator 10 also provides the supporting structure 65 in actuator rod 66, provides for reversing spring 60
The feature of motivator.Spring 60 can make the other end of spring housing 62 and the spring seat board 64 supported by alternative supporting structure 65
Engagement so that the spring compressed between spring seat board 64 and spring housing 62 is towards open position bias valve.Therefore, spring can be anti-
To so that the well-head valve that electricity actuates can be configured to bias well-head valve closure or openness.
Referring to Fig. 2-7, example electrical actuator 10 include actuator housings 72 (e.g., including several aluminium to tighten together
Shell, preferably to prevent leakage way), generally accommodate and support electric notor 74, reducing gear train 76, arrestment mechanism 78, manually
Override mechanism 80 and the motor driver for being generally shown as motor controller 82.Actuator housings 72 are mounted on spring housing 62
On.Electric notor 74 is non-actuated type motor, and fire is prevented when electrical actuator uses around natural gas or other combustible fluids
Flower-shape at, and thus also reduce can exist gas leakage danger situation it is potentially possible.It is other potentially suitable without fire
The motor of flower type includes Brushless DC motor and spark-free AC motor.
In operation, controller 82 selectively gives electric notor 74 to be powered.Electric notor 74 can be by controller 82 to keep mould
Formula operates come the current location for keeping well-head valve 12, and is used to drive well-head valve 12 with activation modes operation.Electric horse
Up to (power for keeping current valve position in the case where brake is closed with offer) between 1 to 3 watts of the consumption in holding pattern, and
It is consumed between 4 to 12 watts in activation modes.The very low power consumption enables electrical actuator 10 only to lean on by solar energy
Existing power supply that panel 24 and battery 26 (local power source can be intended for adjusting electronic-pneumatic wellhead valves originally) provide and grasp
Make.
Referring to Figure 11-14, electric notor 74 includes motor shell or stator 84, about actuator housings 72 with fixed relationship
Installation；And include the rotor of output shaft 86.Output shaft 86 is rotated about stator 84.Output shaft 86 integrally provides thereon small
Gear 88 (by processing output shaft or installing the gear teeth being individually mounted thereto), pinion gear 88 provides reducing gear train 76
Input.Reducing gear train 76 includes multiple independent reduction gearing 90a-d, respectively includes being mounted on common gear axis 96a-
Larger upstream gear teeth 92a-92d on 96d, and smaller downstream gear cog 94a-94d (that is, " small " gear).
Gear shaft 96a-96d is rotatably mounted or is supported to rotate with parallel relation by actuator housings 72.Output shaft
Pinion gear 88 on 86 is engaged with the larger gear teeth 92a of the first reduction gearing 90 so that from motor output shaft 86 to first gear
Axis 96a is exaggerated power.Other gears in reducing gear train are correspondingly to drive larger gear teeth compared with pinion gear teeth 94a-94c
92b-92 is similarly arranged.In motor rotation, exported from motor output shaft 86 to rotation by the electric motivator that motor 74 provides
Apply across reducing gear train 76 and amplify, is then applied by last smaller pinion gear teeth 94d.Smaller gear teeth
94d engages to drive the drive rack 68 with drive rack 68, and rotational energy is thus transformed into linear translation energy.By actuator
The cam member 73 for the spring bias that shell 72 supports keeps that pinion gear teeth should be offset to by rack engaging portion with meshing relation
94d.In some embodiments, which can be used as torque restricting means, to be prevented brokenly in error or more than the situation of torque
It is bad.Another of rack-and-pinion mechanism for rotational energy to be changed to linear movement is alternatively ball screw framework, and
Itself and other trnasistion mechanisms can be used as alternatively.
In order to be enough to drive the example well-head valve 12 in wellhead valve systems 14, in some embodiments, gear train can have
At least 100:1 gear reduction ratio, and in some embodiments at least 400:1.This larger gear reduction ratio the case where
Under, fractional motor power (for example, with existing motor technologies for driving valve to consume 4 to 12 watts) is amplified by reducing gear train, to provide
Enough motivators overcome spring force and/or fluid power drive and normal valve 12, and spring force and/or fluid force are in view of well pressure
The fact that can change in about 10 to 900pis range and can be prodigious.In some embodiments, in well-head valve 12
Gyration time in the case of spend about 1 to 5 minutes between full open position and fully closed position, actuating speed can
Substantially reduce.It has realized that slow gyration time is acceptable, and well production control is not significantly affected (for example, due to life
Production usually daily carry out 24 hours, wherein require well output variation be happened at it is relatively infrequent on the basis of).In view of with
It reduces and actually eliminates (for all actual purposes) and use all of the local power source being usually provided at well-head valve position
When easily dissipation gas discharges associated remarkable advantage, this is alternatively really.
Multiple position sensing apparatus are used in disclosed exemplary embodiment.First, motor controller 82 integrally combines
Analog position sensor 176 controls the position of signal export rotation output from the motor position for being sent to electric notor 74.Simulation
Position sensor is the form of accumulator or counter, when the conductance out position of valve 12 is arrived in the driving of electric notor 74 to counting
In addition number and subtracting number from counting.The variation of valve position is changing into linear ratio with the counting of analog position sensor 176
Example.Disclosed embodiment further includes redundant position sensors, electrical connection and provides feedback to motor controller 82, motor control
Device 82 is shown in the form of potentiometer 178.Potentiometer 178 by cam orientation, cam by last gear shaft 96 extended position
On eccentric surface act on it.Potentiometer 178 provides redundant feedback, is used to check the standard of analog position sensor 176
True property loses electrical power or sliding if existed in electric notor 74, and sensor 176 can have error.Finally, disclosed implementation
Example may also include limit switch 184, represent the well-head valve 12 for being also limited to full open position and fully closed position
It is mounted near last gear shaft 96d at the set-point of end of travel.The output gear shaft 96d of extension includes cam eccentric,
It triggers limit switch 184 at set-point.184 electrical connection of limit switch is to customer interface to provide finger of the valve at set-point
Show.This provides independent feedback to check the accuracy of operation.In some embodiments, limit switch signal can be used for cutting off
To the power of motor 74, to ensure that controller 82 does not signal to motor to drive valve be more than to fully open or closed position.Limit
Switch 184 or adjustable is made, and can manually be rotated about output shaft 96d so that if end user wants restriction and goes
The different ends of journey range, then end user manually can configure and limit him and think the end of suitable stroke range.
Referring to Fig. 1, exemplary system 14 may also include the wireless transceiver 186 energized by local power source, local power
One or two of source and controller 22,82 are electrically connected.It should be noted that the first controller 22 is located at usually outside electrical actuator 10
Well-head valve position at, to provide system level control.Motor controller 82 is more motor driver, to promote to actuate electricity
The control of the driving of device 10 and the positioning of well-head valve 12.Under any circumstance, wireless transceiver 186 can be from the transmitting-receiving of long range positioning
Device 188 wirelesslys receive remote control input and desired signal so that controller 22, one or both of 82 can be controlled remotely
It makes wirelessly to adjust the position of well-head valve 12.Transceiver 186 can also transmit and feed back to remote location, and thus notice safeguards people
Operating parameter (for example, flow rate, valve position, power level, failure etc.) at member's well head position.In some embodiments, example
Sexual system 14 may include various forms of wired or wireless transceivers, be configured to utilize in wired or wireless connection or medium
Or do not utilize line (for example, radio frequency, line, optical fiber, ultrasound or other vibratory communications, based on laser or other optical links) transmission
And/or receive signal.
Another alternative aspect of embodiment can be that sleep pattern is incorporated to electrical actuator 10, when valve 12 is properly positioned,
The hardly consumption of electric power of its in the pattern and automatically reduce its power.According to the pattern, arrestment mechanism 78 is generally being opened
Position, and dynamic brake is accordingly acted as, it is arranged to provide the resistance that valve 12 moves.Since arrestment mechanism 78 is carried when opening
For enough power to prevent the reverse drive of gear train when losing power, therefore operable arrestment mechanism 78 is to keep well-head valve 12
Current location.Electric notor 74 provides enough power and torque to cause brake to slide, and thus suppresses brake in the phase
Well-head valve 12 is moved when prestige.Sleep pattern also provides efficiency, and reduces power in the electrical power deficiency of these remote locations and disappear
Consumption.
Figure 15 is the block diagram of example natural gas well production system 1514.Natural gas well production system 1514 is that example electricity actuates
The sample application and operating environment of device 1510.Well-head valve 1512 adjusts the gas production across collecting pipe 1518 (for example, figure
Gas production 16 in 1) production output.Well-head valve 1512 is mounted in collecting pipe 1518 with sensor 1520 into fluid
Serially.The aperture of well-head valve 1512 and well gas pressure (its usual range 10 between 900psi, or for some lifes
Produce well higher) the determining natural gas flow rate across collecting pipe 1518.Sensor 1520 measures the one of the natural gas for flowing through pipe 1518
A or multiple properties (for example, flowing, pressure difference, gauge pressure, temperature).Sensor 1520 will represent property/multiple property of sensing
The closed-loop control that the electricity feedback of matter is provided to electronic controller 1522 to be used on electrical actuator 1510 and well-head valve 1512.Figure
16 be another block diagram of exemplary electron controller 1522.
Since well can be located remotely from commercial power sources, therefore show that system 1514 to include local power supply, generally includes the sun
It can panel 1524, energy-storage system 1526 (for example, battery) and power controller 1527.In use, solar panels 1524 generate
Electrical power, and the power that the instruction of power controller 1527 generates energizes electronic controller 1522, to a series of outer field devices
1529 energize and/or charge to energy-storage system 1526.Power controller 1527 is configured to control and is obtained from energy-storage system 1526
Electrical power, with to electronic controller 1522 and/or the energy supply of outer field device 1529, in some embodiments, and by solar panels
1526 power combinations generated.In some embodiments, solar panel 1524 can be by wind turbine, fluid turbine, fuel cell
Any other suitable form in renewable or non-regenerative power source is replaced.In some embodiments, energy-storage system 1526 can
For battery, flywheel, capacitor, thermal energy storage system, Fluid pressure stocking system, spring, mechanical potential stocking system, or can store up
Deposit and provide any other suitable device for the power for being convertible into and/or being converted from electric energy.
Electrical actuator 1510 includes motor controller 1582 and the motor 1574 being operably linked on well-head valve 1512.
In some embodiments, 1510 replaceable Pneumatic actuation system of electrical actuator, without any additional power or power generation,
Using only existing local power supply.In some embodiments, electronic controller 1514 can be used as that device is transformed, existing to replace
Well-head valve at Pneumatic actuation system or other valve actuating systems.In some embodiments, it may include power generation or storage capacity
Additional extension.
Electrical actuator 1510 is based on the program instruction and Configuration Values being stored in memory module 1592 come from processor
1590 receive control signal.Processor 1590 is the local process controller (LPC) in shell 1572.Processor 1590 is configured to
Some diagnostic functions are monitored, predictive diagnosis is enable to detect the early sign of degeneration before interrupting service, to trigger maintenance
Or maintenance activity.In some embodiments, available information may include the interruption that can be needed, part and service prediction (when
Between), and determine functional plan until the reduction that can provide maintenance or maintenance.Processor 1590 is configured to receive and close
In the maintenance time of functional confirmation of reduction, plan, and request is as the more of the signal provided by transceiver 1586
The ability of data.
Processor 1590 is the programmable controller that can be operated with the input power less than 1 watt.Electrical actuator 1522 is matched
It is equipped with inner conductor trace spacing, component and other designs and considers that prevent to generate can be more than 1 limit of Class I, Div.
The high surface temperature of the limit, and the rated value of the component used is completely in its specified limit.
In some embodiments, well-head valve 1512 can be linearly translatable valve, rotary valve or any other suitable form
It is movable/can normal valve.In some embodiments, well-head valve 1512 can be the valve of linear-type, with valve chest and can line
In the valve member of mild-natured shifting, such as the example well-head valve 12 of Fig. 1.Valve chest 1528 include limit flow passage valve body (for example,
Valve body 41, flow passage 32).Valve rod 1538 extends through valve chest 1528, and is acted on it by electrical actuator 1510.Valve rod
1538 transmit selective detent force from electrical actuator 1510 to actuate well-head valve 1512.
Example electrical actuator 1510 include actuator housings 1572 (e.g., including be preferably fastened on one to prevent leakage way
Several aluminum hulls risen), generally accommodate and support motor 1574, reducing gear train 1576, motor controller 1582.At some
In embodiment, actuator housings 1572 can be configured to be mounted on pipe 1518.Shell 1572 be disposed for outdoor site and/or
Location at risk (for example, it is desired to using Class I, the place of the equipment of 1 grades of Division).In some embodiments, horse
It is non-actuated type stepper motor up to 1574, spark is prevented when electrical actuator uses around natural gas or other combustible fluids
It is formed, and thus reduces the potentially possible of the danger situation that can have gas leakage.Other potentially suitable sparkproof types
Motor include Brushless DC motor and " no-spark " alternating current motor.
In operation, controller 1582 selectively gives electric notor 1574 to be powered.Electric notor 1574 can be by controller 1582
Operation is used to keep the current location of well-head valve 1512 in holding pattern, and is used to drive well-head valve in activation modes operation
1512.Electric notor 1574 consume 1 to 3 watts in holding pattern between (for example, with provide kept in the case where brake is closed
The power of current valve position), and consumption is less than three watts in activation modes.The extremely low power consumption enables electrical actuator 1510 only
The existing power operation provided by solar panel 1524 and energy-storage system 1526 is only provided, it is such as dotted from the setting of wireless receiving
Indicated by state and internal or external energy converter feedback.
Figure 17 A-17B are the partial sectional view of example electric controller 1522.As shown in Figure 17 A-17B, electric notor 1574
Include the motor shell installed with fixed relationship about actuator housings 1572 or stator (for example, stator 84), and including defeated
The rotor of shaft (for example, output shaft 86).Output shaft is rotated about stator.The gear that output shaft integrally provides thereon (does not show
Go out), the input for reducing gear train 1576 is provided.In some embodiments, reducing gear train 1576 can be reduction gearing
It is 76.
When electric notor 1574 rotates, the electric motivator that is provided by electric notor 1574 is across reducing gear train 1576 from motor
Output shaft applies and amplifies to valve rod 1538.In some embodiments, which can be used as torque restricting means, in error or
More than preventing from destroying in the situation of torque.In some embodiments, rack-and-pinion mechanism, ball screw framework or it is any its
Its suitable switching mechanism can be used for rotational energy converting linear movement.
In some embodiments, reducing gear train 1576 can have at least 100:1 reduction gear ratio, and in some implementations
At least 400 in example:1 (for example, 458:1).In the case of this larger gear reduction ratio, fractional motor power is (for example, for driving
The dynamic consumption of valve 1512 is less than 3 watts) amplified by reducing gear train 1576, to provide enough motivators (for example, 630ft/lb)
Overcome the spring force in addition to resetting spring (not shown) and/or fluid force (for example, 580ft/lb) drives and normal valve 12, this mirror
In the fact well pressure can change in about 10 to 900pis range and can be prodigious.In some embodiments, exist
The gyration time of valve 1512 fully open spend about 1 to 5 minutes between closed position in the case of, actuating speed can be big
Width reduces.In embodiment, slow gyration time is acceptable, thereby increases and it is possible to will not significantly influence well production control (for example, by
It is usually carried out daily 24 hours in production, the variation of the wherein requirement in well output is occurred with relatively infrequent basis).
Referring again to Figure 15-17B, electronic controller 1522 includes that collecting sensor inputs 1523, is configured to from a series of
Internal sensor 1525 and a series of external sensors 1527 receive feedback signal.Internal sensor 1525 is integrally connected to electricity
On electronic equipment in sub-controller 1522.In some embodiments, sensor 1525,1527 may include multiple position sensing dresses
It sets.In some embodiments, sensor 1525,1527 can provide signal, and signal can make processor 1590 be able to carry out a variety of work(
Can, for example, the problem of just flow rate control, backpressure regulation, downstream pressure adjust, detect the producing well or production equipment of its control,
Horizontal sensing, temperature sensing, flowing the measuring equipment such as monitoring of orifice metre (for example, P1, dP, temperature), mass flow
Count that (for example, analog signal, frequency, pulse counter), Modbus be serial and/or internal agreement (IP) communication, battery supplied electricity
Pressure and any other suitable control and/or monitoring function.In some embodiments, processor 1590 can be strong based on sensor
Health generates leverage come identifying system by other sensor informations to other electronic controllers 1522 from scene
Maintenance and maintenance based on sensor health can also be provided in the functionality of 1514 reduction.
In some embodiments, sensor 1525,1527 can meet for being included in Class I, 1 devices of Division
In feature.This usually requires sensor and is fully sealed, and does not have electric arc or firing section, is grasped in the temperature that component allows
Make, and does not generate the high temperature surface that can light fuel gas or liquid.In addition, fluid port interface can be configured to via at least 5
The minimum plain adapter distance of a screw thread or at least 12mm provides required flame path.
In some embodiments, sensor 1525,1527 can have at least 0.15% accuracy of entire scale, and special
Determine the realization that range can be used for ensuring scheduled accuracy.In some embodiments, sensor 1525,1527 can be 0 to 5V straight
Stream output device, to reinforce the low-power operation of electric controller 1522.
In some embodiments, motor controller 1582 can integrally comprise analog position sensor, from being sent to electricity
The motor position of motor 1574 controls signal to export the position of rotation output.In some embodiments, analog position sensor
Can being the form of accumulator or counter, being added to counting when driving electric notor 1574 to the conductance out position of valve 1512
Number and subtract number from counting.In some embodiments, the variation of valve position can be with the counting of analog position sensor
Variation is linearly.In some embodiments, electronic controller 1522 may include electrical connection and provide feedback to motor control
The redundant position sensors of device 1582 are (for example, potentiometer, provides redundant feedback, be used to check analog position sensor
Accuracy, if in electric notor 1574 exist lose electrical power or sliding if analog position sensor can have error).Sensing
Device 1525,1527 may also include limit switch, be configured to detection well-head valve 1512 end of travel (for example, fully open and
Fully closed position).In some embodiments, reducing gear train 1576 may include cam eccentric, at scheduled set-point
Trigger limit switch.
Referring to Figure 15, example system 1514 further includes the wireless transceiver 1586 energized by power controller 1527.Substantially
On, wireless transceiver is used to the procedural information collected by internal sensor 1525 and processor 1590 being transmitted to remote operation
It stands.Transceiver 1586 is configured to the two-way wireless transceiver (XCVR) in controller 1522 so that controller 1522 with it is excessively program-controlled
It connects with making other element communications of stream, to receive operational order from remote manual or automatic control system, and/or will be excessively program-controlled
Data and diagnostic message processed are transmitted to operator or maintenance personnel.
Once having built up wireless connection between wireless transceiver 1586 and remote control station, then several functions are can perform
At least one of.For example, electronic controller 1522 can setting up procedure variable set-point (for example, programmable controller on it
Execute its control function, and thus its throttle position matches setting point value), by process variable signal from sensor 1525,
1527 transmission, transmit the identifier of electronic controller 1522, transmit the position of valve shaft, transmit the state letter from processor 1590
It ceases (for example, malfunction of the detection of electronic controller 1522 and/or sensor 1525,1527), transmits electronic controller
1522 geographical location, the process description of transmission valve/actuator assemblies, transmission value associated with the state of power input, and/
Or any other suitable information of transmission.
It should be noted that controller 1522, which is located at, provides system level control at well-head valve position.Motor controller 1582 promotees
Into the control of the positioning of driving and well-head valve 1512 to electrical actuator 1510.Wireless transceiver 1586 can be wirelessly from long-range fixed
The transceiver (not shown) of position receives remote control input and desired signal so that controller 1522 can be remotely configured to wirelessly
Ground adjusts the position of well-head valve 1512.In some embodiments, transceiver 1586 can also transmit and feed back to remote location, and by
This notify at maintenance personnel's well head position operating parameter (for example, flow rate, valve position, power level, failure, prediction maintenance
It needs).
The controller 1522 of exemplary system includes sleep pattern, and wherein controller 1522 is several when valve 1512 is properly positioned
Non- consumption of electric power and automatically reduce its power.According to the pattern, arrestment mechanism (for example, arrestment mechanism 78) generally can be
Open position, and dynamic brake is accordingly acted as, it is arranged to provide the resistance that valve 1512 moves.In some embodiments,
Arrestment mechanism can provide enough power to prevent the reverse drive (example of reducing gear train 1576 when losing power when opening
Such as, arrestment mechanism can keep well-head valve 1512 in current location).In some embodiments, electric notor 1574 can provide enough
Power and torque cause brake to slide, and thus it is expected compacting brake carrys out the movement well-head valve 1512 when.In some implementations
In mode, efficiency also can be improved in sleep pattern, and can reduce power consumption at electrical power insufficient (for example, remote site).
In some embodiments, the programming of electronic controller 1522 can be customized by user/owner, to allow valve 1512
Control regional area in many automated procedures.For example, control function may include that continuous processing industry, such as pressure are adjusted
With such as horizontal control of flowing control, time and sequence function, pressure, flow rate, level, time sequencing, with by operate motor with
Gear reduction system carrys out management process variable, thus changes the position of valve closed system and spool lifts system.
Processor 1590 is programmed for having many pressure limited in advance and/or flow rate setpoint track.In some implementations
In mode, these tracks can be used for simulation process determine certain features of oil, combustion gas or water producing well, determine oil, combustion gas or
The porosity levels on the stratum that water ballast has determine well size or other similar applications based on the rate of delta data.
In addition to the control function limited in advance, the programming language of industrial standard can be used to use structuring for processor 1590
The combination of text, functional block diagram, ladder logic or more configures.This allow that user changes function or customization is added on demand
Function is come with new or unique way applying electronic controller 1522.In some embodiments, processor 1590, which can be used, compiles
Journey Programming with Pascal Language, programming language are intuitive, and with for other process control application those of be common.In some implementations
In mode, the flexibility of user program ability allows for electronic controller 1522 and is suitable for a variety of applications and data collection purpose.
In some embodiments, electronic controller 1522 also can recognize that other valves at scene.In some embodiments, pre-existing
Standard procedure control application (for example, back pressure control, flow rate control, air-flow, liquid stream, pressure adjusting, level control, spool lifts,
Manifold pressure balance, flow equilibrium, gas injection, output are adjusted) allow user to identify that the type of control valve and other valves exist
Same application, process or the effect at position.
Figure 18 is with integrated control module (e.g., the exemplary electrical sub-controller 1522 in Figure 15) operation example electrical actuator
The flow chart of the instantiation procedure 1800 of valve.
At 1810, provide control valve comprising fluid valve bodies, valve body have for receive fluid entrance,
Outlet, the fluid flow passages for connecting entrance and exit and controllable restricting element for fluid to be discharged（It is removable
Come selectively change access at least part of stream sectional area）, be connected on valve body and have choosing in response to control signal
Select the valve actuator of mobile restricting element, integrated and with processor the controller with control valve, processor is for connecing
The signal and configuration information are received, is used to form the output depending on configuration information and received signal, and be used to form state
Information.For example, natural gas well production system 1514 includes example electrical actuator 1510, well-head valve 1512 and electronic controller
1522。
At 1820, a series of configuration informations are received with the communication system that control valve integrates.For example, wireless transceiver
1586 can receive configuration setting from the station remotely connected.
At 1830, the sensor integrated with control valve (for example, electronic controller 1522) is (for example, sensor
1525,1527) at least one of absolute pressure, gauge pressure, pressure difference, flow and the temperature sensed in fluid flow passages is made
For sensor signal.
At 1840, it is based on configuration information and signal with the associated processor of controller for being integrated in control valve and matches
Confidence breath determines output.For example, processor 1590 can be used from the set-point that memory module 1592 obtains and come from sensor
1525,1527 feedback determines the target location for valve 1512.
At 1850, valve actuator actuates the movement of controllable restricting element based on output, to selectively change
The sectional area of at least part of stream of access.For example, processor 1590 can command motor controller 1582 to drive electric notor
1574 so that precalculated position of the valve 1512 in range from be closed completely to fully opening.
At 1860, processor determines a series of status informations based on the sensor signal and the configuration information.Example
Such as, processor 1590 can determine the position of valve 1512, the fluid for flowing through valve 1512 pressure, flow through valve 1512 fluid temperature
Degree, valve 1512 and/or electronic controller 1522 component failure and/or prediction to fault time, and electronics can be described
Any other suitable information of the operation of controller 1522.
At 1870, communications system transmission status information.For example, processor 1590 can provide process and/or status information
Long-range receiving station is transmitted to wireless transceiver 1586.
In some embodiments, sensor signal may include that the first pressure based on the inlet for being arranged in valve body senses
Device and represent inlet fluid pressure first pressure signal, and the second pressure based on the exit for being arranged in valve body
Sensor and represent exit fluid pressure second pressure signal, and process 1800 may include receive first pressure signal
With the pressure signal, and formed depending on received signal output, based on first pressure signal and second pressure signal it is true
The fixed fluid-pressure drop across valve body stores scheduled fluid-pressure drop value, by the fluid-pressure drop value of determining fluid-pressure drop and storage
Compare, determine that its size represents the difference signal of the difference between fiducial value, and by valve actuator move restricting element
Change the fluid-pressure drop across valve body, with the fluid-pressure drop value of closer matching storage.
In some embodiments, process 1800 may include storing predetermined temperature value, believe the temperature for representing fluid temperature (F.T.)
Number compared with the temperature value of storage, the difference signal that determines difference between its size represents fiducial value, moved by valve actuator
Thus dynamic throttling element changes the temperature of the fluid flowed in access, with the temperature value of closer matching storage.
In some embodiments, process 1800 may include representing in fluid flow passages by controller and based on determination
The temperature signal of the temperature of fluid, the fluid ability for representing by controller and being determined based on throttling element position sensor valve body
Flow signals, and determine based on sensor signal, temperature signal and flow signals by controller the flow rate of the fluid in access.
In some embodiments, the process may include storing predetermined flow rate value by controller, will be determining by controller
Flow rate compared with storage flow rate value, determine by controller the difference signal of difference between its size represents fiducial value, and
Control signal is provided by controller to be applied to actuator, changes flow rate to cause actuator movement restricting element, with tighter
The flow rate value of close matching storage.
In some embodiments, process 1800 may include by controller reception be operable to execute include pressure adjusting,
The program instruction of the control function of flowing control, horizontal control and spool lifts control.In some embodiments, status information
It may include the fault time of prediction, the identity of part, identity that is preventative or remedying sex service and confirm reduced functionality
One or more of the plan of time until maintenance or maintenance can be provided.In some embodiments, configuration information can wrap
It is attached to include flowing set-point, temperature set points, pressure setpoint, functional confirmation of reduction, the maintenance time of plan and request
One or more of addend evidence.
Although the present invention is shown as controlling or regulating the natural gas at well head, the present invention can have other application.Example
Such as, controller 1522 can be with the valve of the stream for adjusting other types of process fluid (including other types of gas and liquid)
It is used together.
Although the several embodiments of above-detailed, other remodeling are possible.For example, that describes in attached drawing patrols
Volume stream do not need shown in particular order or consecutive order to realize desired result.In addition, other steps can be carried from the stream
For or step can be eliminated from the stream, and other components can add to the system or from the system remove.Therefore, other implementations
Mode is in the range of following claims.
Claims (33)
1. a kind of control valve, including：
Fluid valve bodies, the fluid valve bodies have for receiving the entrance of fluid, the outlet for fluid to be discharged, entering described in connection
The fluid flow passages of mouth and the outlet, and move section of at least part of stream to selectively change the access
The controllable restricting element of area；
Valve actuator, the valve actuator are connected on the valve body, and are used to selectively moving in response to control signal
The restricting element；
Sensor, the sensor for generate the absolute pressure represented in the fluid flow passages, gauge pressure, pressure difference,
At least one signal of at least one of flow and temperature；
Communication system, the communication system is for receiving configuration information and transmission state information；And
Controller, the controller include processor, and the processor is used to form for receiving the signal and configuration information
Depending on the output of the configuration information and the signal of reception, and it is used to form the status information.
2. control valve according to claim 1, which is characterized in that the sensor includes：
First pressure sensor, the first pressure sensor are arranged in the inlet of the valve body, and institute is represented for generating
State the first signal of the pressure of the fluid of inlet；
Second pressure sensor, the second pressure sensor arrangement represent institute in the exit of the valve body, for generating
State the second signal of the pressure of the fluid in exit；
Receiver, the receiver are used to form for receiving first signal and the second signal depending on described
The output of received signal；And
The controller is configured to：
The fluid-pressure drop across the valve body is determined from first signal and the second signal；
Store predetermined fluid voltage drop value；
The determining fluid-pressure drop is compared with the fluid-pressure drop value of storage, and for generating difference signal, it is described
The size of difference signal represents the difference between fiducial value；And
It determines that control signal is applied to the actuator, to cause it to move the restricting element, thus changes across the valve
The fluid-pressure drop of body with the fluid-pressure drop value of the closer matching storage, and reduces the size of the difference signal.
3. control valve according to claim 2, which is characterized in that the controller includes processor, for：
Store predetermined temperature value；
The signal for the temperature T1 for representing the fluid is compared with the temperature value of the storage, and for generating difference signal,
The size of the difference signal represents the difference between fiducial value；And
Control signal is generated to be applied to the actuator, to cause it to move the restricting element, thus changes the access
The temperature of the fluid of middle flowing, with the temperature value of the closer matching storage and the size of the reduction difference signal.
4. the control valve according to any one of claim 1 to claim 3, which is characterized in that described excessively program-controlled
Valve processed further includes：
Temperature sensor for the temperature signal for generating the temperature for representing the fluid in the fluid flow passages；And
Throttling element position sensor for the flow signals for generating the fluid ability for representing the valve body；And
The wherein described controller is configured to determine in the access from the signal, the temperature signal and the flow signals
The flow rate of the fluid.
5. the control valve according to any one of claim 1 to claim 4, which is characterized in that the processor
It is suitable for：
Store predetermined flow rate value；
The flow rate of the determination is compared with the flow rate value of storage, and for generating difference signal, the difference letter
Number size represent the difference between fiducial value；And
Control signal is generated to be applied to the actuator, to cause it to move the restricting element, thus changes the flow rate
Carry out the flow rate value of the closer matching storage, and reduces the size of the difference signal.
6. according to control valve according to any one of claims 1 to 5, which is characterized in that described excessively program-controlled
Valve processed further includes for one or more in the valve actuator, the sensor, the communication system and the controller
The power system of a energy supply, wherein the instantaneous power obtained from the power system is no more than 3 watts.
7. the control valve according to any one of claim 1 to claim 6, which is characterized in that described excessively program-controlled
Valve processed further includes being configured to needing Class I, the location at risk of the equipment of 1 grades of Division that the valve is protected to actuate
The capsule of device, the sensor, the communication system and the controller.
8. the control valve according to any one of claim 1 to claim 7, which is characterized in that the processor
It is disposed for receiving the program instruction for being operable to execute control function, the control function includes that pressure is adjusted, flowing is controlled
One or more of system, horizontal control and spool lifts control.
9. the control valve according to any one of claim 1 to claim 8, which is characterized in that the state letter
Breath includes the fault time predicted, identity, the identity that is preventative or remedying sex service of part, and confirms reduced functionality
One or more of the plan of time until maintenance or maintenance can be provided.
10. the control valve according to any one of claim 1 to claim 9, which is characterized in that described to match confidence
Breath include flowing set-point, temperature set points, pressure setpoint, functional confirmation of reduction, plan maintenance time and ask
Seek one or more of additional data.
11. the control valve according to any one of claim 1 to claim 10, which is characterized in that the communication
System includes wireless transceiver come for wirelessling receive configuration information and transmission state information.
12. the control valve according to any one of claim 1 to claim 11, which is characterized in that the communication
System includes for receiving the wireline transceiver of configuration information and transmission state information by wired connection.
13. a kind of method for controlling process fluid, including：
Control valve is provided comprising：
Fluid valve bodies, the fluid valve bodies have for receiving the entrance of fluid, the outlet for fluid to be discharged, entering described in connection
The fluid flow passages of mouth and the outlet, and move section of at least part of stream to selectively change the access
The controllable restricting element of area；
Valve actuator, the valve actuator are connected on the valve body, and are used to selectively moving in response to control signal
The restricting element；
Controller, the controller is integrated with the control valve, and includes processor, and the processor is described for receiving
Signal and configuration information, are used to form the output of the signal depending on the configuration information and reception, and are used to form
The status information；
A series of configuration informations are received by the communication system integrated with the control valve；
By the sensor integrated with the control valve sense absolute pressure in the fluid flow passages, gauge pressure,
At least one of pressure difference, flow and temperature are used as sensor signal；
It is by processor associated with the controller for being integrated in the control valve and true based on the signal and configuration information
The fixed output based on the configuration information；
The movement of the controllable restricting element is actuated by the valve actuator and based on the output to selectively change
The sectional area of at least part of stream of the access；
A series of status informations are determined by the processor and based on the sensor signal and the configuration information；And
The status information described in the communications system transmission.
14. according to the method for claim 13, which is characterized in that the sensor signal includes：
First pressure sensor based on the inlet for being arranged in the valve body and represent the inlet the fluid pressure
The first pressure signal of power；
Second pressure sensor based on the exit for being arranged in the valve body and represent the exit the fluid pressure
The second pressure signal of power；
Wherein the method further includes：
The first pressure signal and the pressure signal are received, and is used to form the output of the signal depending on receiving；
The fluid-pressure drop across the valve body is determined based on the first pressure signal and second pressure signal by the controller；
Predetermined fluid voltage drop value is stored by the controller；
Determining fluid-pressure drop is compared with the fluid-pressure drop value of storage by the controller；
Determine that difference signal, the size of the difference signal represent the difference between fiducial value by the controller；And
The restricting element is moved by the valve actuator to change the fluid-pressure drop across the valve body, with closer
Fluid-pressure drop value with the storage.
15. according to the method for claim 14, which is characterized in that the method further includes：
Predetermined temperature value is stored by the controller；
It is compared with the temperature value of storage by the controller by the temperature signal of the fluid temperature (F.T.) is represented；
The difference signal of the difference between its size represents fiducial value is determined by the controller；And
The restricting element is moved by the valve actuator, thus changes the temperature of the fluid flowed in the access, with tighter
The temperature value of the close matching storage.
16. the method according to any one of claim 13 to claim 15, which is characterized in that the method is also wrapped
It includes：
By the controller and based on the temperature signal for determining the temperature for representing the fluid in the fluid flow passages；
The flow signals for the fluid ability for representing the valve body are determined by the controller and based on throttling element position sensor；
And
It is determined in the access based on the sensor signal, the temperature signal and the flow signals by the controller
The flow rate of the fluid.
17. the method according to any one of claim 13 to claim 16, which is characterized in that the method is also wrapped
It includes：
Predetermined flow rate value is stored by the controller；
Determining flow rate is compared with the flow rate value of storage by the controller；
Determine that difference signal, the size of the difference signal represent the difference between fiducial value by the controller；And
Control signal is provided by the controller to be applied to the actuator, to cause the actuator to move the throttling member
Part changes the flow rate, with the flow rate value of the closer matching storage.
18. the method according to any one of claim 13 to claim 17, which is characterized in that the method is also wrapped
It includes：Be operable to execute by controller reception includes that pressure is adjusted, flowing controls, horizontal control and spool lifts control
The program instruction of control function.
19. the method according to any one of claim 13 to claim 18, which is characterized in that the status information packet
Include the fault time of prediction, the identity of part, identity that is preventative or remedying sex service, and confirm it is reduced it is functional until
One or more of the plan of time of maintenance or maintenance can be provided.
20. the method according to any one of claim 13 to claim 19, which is characterized in that the configuration information packet
It is attached to include flowing set-point, temperature set points, pressure setpoint, functional confirmation of reduction, the maintenance time of plan and request
One or more of addend evidence.
21. the method according to any one of claim 13 to claim 20, it is characterised in that：
The communication system includes wireless transceiver；
It includes by described wireless to receive a series of configuration informations by the communication system integrated with the control valve
Transceiver wirelesslys receive a series of configuration informations；And
The status information described in the communications system transmission includes being wirelessly transmitted the status information by the wireless transceiver.
22. the method according to any one of claim 13 to claim 21, it is characterised in that：
The communication system includes wireline transceiver；
It includes by described wired to receive a series of configuration informations by the communication system integrated with the control valve
Transceiver receives a series of configuration informations by wired connection；And
The status information described in the communications system transmission includes transmitting the shape by wired connection by the wireline transceiver
State information.
23. a kind of valve that electricity actuates, including：
Electric notor is suitable for rotating output shaft；
Reducing gear train, the reducing gear train include multiple gears, and the multiple gear includes shaft-driven by the output
Input gear and rotation export, and the multiple gear is suitable for when the electric notor rotates the output shaft from the input gear
Amplification power is exported to the rotation；
Valve is suitable for controlling fluid stream therebetween through, and the valve includes valve chest and valve member, and the valve chest limits flowing
Access, the valve member move in the valve chest between open position and closed position, logical to control the flowing
The aperture on road；
Spring is arranged to shifting the valve into one in the open position and the closed position onto, brake in
Enough resistances are provided when open position to overcome the effect of the spring to keep the current location of the valve, and wherein described
Electric notor overcomes the resistance when the brake is in the open position to move with enough rotary output forces
State valve；
Sensor, the sensor for generate the absolute pressure represented in the fluid flow passages, gauge pressure, pressure difference,
At least one signal of at least one of flow and temperature；
Communication system, the communication system is for receiving configuration information and transmission state information；And
Controller, the controller include processor, and the processor is configured to receive the signal and configuration information, determination take
Certainly in the output of the configuration information and the signal of reception, and determine the status information.
24. the valve that electricity according to claim 23 actuates, which is characterized in that the sensor includes：
First pressure sensor, the first pressure sensor are arranged in the inlet of the valve body, and institute is represented for generating
State the first signal of the pressure of the fluid of inlet；
Second pressure sensor, the second pressure sensor arrangement represent institute in the exit of the valve body, for generating
State the second signal of the pressure of the fluid in exit；
Receiver, the receiver are used to form for receiving first signal and the second signal depending on described
Receive the output of signal；And
The controller is configured to：
The fluid-pressure drop across the valve body is determined from first signal and the second signal；
Store predetermined fluid voltage drop value；
The fluid-pressure drop of the determination is compared with the fluid-pressure drop value of storage, and for generating difference signal, it is described
The size of difference signal represents the difference between fiducial value；And
It generates control signal and is applied to the actuator, to cause it to move the restricting element, thus change across the valve
The fluid-pressure drop of body with the fluid-pressure drop value of the closer matching storage, and reduces the size of the difference signal.
25. the valve that electricity according to claim 24 actuates, which is characterized in that the controller is further configured to：
Store predetermined temperature value；
The signal for the temperature for representing the fluid is compared with the temperature value of the storage, and for generating difference signal, institute
The size for stating difference signal represents difference between fiducial value；And
Control signal is generated to be applied to the actuator, to cause it to move the restricting element, thus changes the access
The temperature of the fluid of middle flowing, with the temperature value of the closer matching storage and the size of the reduction difference signal.
26. the valve that the electricity according to any one of claim 23 to claim 25 actuates, which is characterized in that the electricity promotees
Dynamic valve further includes：
Temperature sensor for the temperature signal for generating the temperature for representing the fluid in the fluid flow passages；And
Throttling element position sensor for the flow signals for generating the fluid ability for representing the valve body；And
The wherein described controller is configured to determine in the access from the signal, the temperature signal and the flow signals
The flow rate of the fluid.
27. the valve that the electricity according to any one of claim 23 to claim 26 actuates, which is characterized in that the processing
Device is configured to：
Store predetermined flow rate value；
The flow rate of the determination is compared with the flow rate value of the storage, and for generating difference signal, the difference letter
Number size represent the difference between fiducial value；And
Control signal is generated to be applied to the actuator, to cause it to move the restricting element, thus changes the flow rate
Carry out the flow rate value of the closer matching storage, and reduces the size of the difference signal.
28. the valve that the electricity according to any one of claim 23 to claim 27 actuates, which is characterized in that the electricity promotees
Dynamic valve further include for one in the valve actuator, the sensor, the communication system and the controller or
The power system of multiple energy supplies, wherein the instantaneous power obtained from the power system is no more than 3 watts.
29. the valve that the electricity according to any one of claim 23 to claim 28 actuates, which is characterized in that the electricity promotees
Dynamic valve further includes being configured to needing Class I, the location at risk of the equipment of 1 grades of Division that the valve is protected to actuate
The capsule of device, the sensor, the communication system and the controller.
30. the valve that the electricity according to any one of claim 23 to claim 29 actuates, which is characterized in that the processing
Device be configured to receive be operable to execute control function program instruction, the control function include pressure adjust, flowing control,
One or more of level control and spool lifts control.
31. the valve that the electricity according to any one of claim 23 to claim 30 actuates, which is characterized in that the state
Information includes the fault time predicted, identity, the identity that is preventative or remedying sex service of part, and confirms reduced function
The plan of time one or more of of the property until maintenance or maintenance can be provided.
32. the valve that the electricity according to any one of claim 23 to claim 31 actuates, which is characterized in that the communication
System includes wireless transceiver come for wirelessling receive configuration information and transmission state information.
33. the valve that the electricity according to any one of claim 23 to claim 32 actuates, which is characterized in that the communication
System includes for receiving the wireline transceiver of configuration information and transmission state information by wired connection.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562257018P | 2015-11-18 | 2015-11-18 | |
| US62/257018 | 2015-11-18 | ||
| PCT/US2016/062858 WO2017087850A1 (en) | 2015-11-18 | 2016-11-18 | Wireless control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108474243A true CN108474243A (en) | 2018-08-31 |
Family
ID=58717946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680079224.3A Pending CN108474243A (en) | 2015-11-18 | 2016-11-18 | Wireless control valve |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3377725A1 (en) |
| CN (1) | CN108474243A (en) |
| WO (1) | WO2017087850A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113268834B (en) * | 2021-06-16 | 2022-08-26 | 海驹(浙江)智能科技有限公司 | Pipeline environment safety and health management system |
| WO2023161953A1 (en) * | 2022-02-28 | 2023-08-31 | Tvs Motor Company Limited | Throttle actuation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519295A (en) * | 1994-04-06 | 1996-05-21 | Honeywell Inc. | Electrically operated actuator having a capacitor storing energy for returning the actuator to a preferred position upon power failure |
| AU9133998A (en) * | 1990-06-01 | 1999-01-14 | Flowserve Fcd Corporation | Integrated process control valve |
| GB0111981D0 (en) * | 2000-05-16 | 2001-07-04 | Kongsberg Offshore As | Electronic acutator |
| US20040134665A1 (en) * | 2003-01-10 | 2004-07-15 | Woodward Governor Company | Actuator for well-head valve or other similar applications and system incorporating same |
| CN104345727A (en) * | 2013-08-09 | 2015-02-11 | 费希尔控制国际公司 | Providing diagnostic and/or prognostic capabilities in a process control system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE323857T1 (en) | 1998-08-17 | 2006-05-15 | Donald Philip Arbuckle | INTEGRATED SEALING PROTECTION DEVICE AGAINST LIQUIDS WITH VISUAL VOLUME INDICATOR |
| US6830061B2 (en) * | 2001-04-27 | 2004-12-14 | Fisher Controls International Llc | Intelligent regulator with input/output capabilities |
-
2016
- 2016-11-18 EP EP16816783.1A patent/EP3377725A1/en not_active Withdrawn
- 2016-11-18 WO PCT/US2016/062858 patent/WO2017087850A1/en active Application Filing
- 2016-11-18 CN CN201680079224.3A patent/CN108474243A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU9133998A (en) * | 1990-06-01 | 1999-01-14 | Flowserve Fcd Corporation | Integrated process control valve |
| US5519295A (en) * | 1994-04-06 | 1996-05-21 | Honeywell Inc. | Electrically operated actuator having a capacitor storing energy for returning the actuator to a preferred position upon power failure |
| GB0111981D0 (en) * | 2000-05-16 | 2001-07-04 | Kongsberg Offshore As | Electronic acutator |
| US20040134665A1 (en) * | 2003-01-10 | 2004-07-15 | Woodward Governor Company | Actuator for well-head valve or other similar applications and system incorporating same |
| CN104345727A (en) * | 2013-08-09 | 2015-02-11 | 费希尔控制国际公司 | Providing diagnostic and/or prognostic capabilities in a process control system |
| CN204360211U (en) * | 2013-08-09 | 2015-05-27 | 费希尔控制国际公司 | Process controller and Digital Valve Controller |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3377725A1 (en) | 2018-09-26 |
| WO2017087850A1 (en) | 2017-05-26 |
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Application publication date: 20180831 |