CN101641654B - Controller and control system for a pressure reducing valve - Google Patents

Controller and control system for a pressure reducing valve Download PDF

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Publication number
CN101641654B
CN101641654B CN2008800097283A CN200880009728A CN101641654B CN 101641654 B CN101641654 B CN 101641654B CN 2008800097283 A CN2008800097283 A CN 2008800097283A CN 200880009728 A CN200880009728 A CN 200880009728A CN 101641654 B CN101641654 B CN 101641654B
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pressure
controller
data
reduction valve
output pressure
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CN101641654A (en
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安德鲁·罗兰·伯罗斯
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Mueller International LLC
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I2O Water Ltd
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Priority claimed from GB0705538A external-priority patent/GB0705538D0/en
Priority claimed from GB0722343A external-priority patent/GB0722343D0/en
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Priority claimed from PCT/GB2008/000265 external-priority patent/WO2008090359A2/en
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Abstract

A controller (8) for a pilot valve (102) which adjusts the output pressure of a pressure reducing valve (44) supplying water to a consumer region (3). With the aim of reducing output pressure whilst still providing a minimum required pressure at a critical point (CP) in the region, the controller adjusts the output pressure in accordance with the flow rate. The controller includes a clock (22) and the relationship between the required output pressure and the measured flow rate is time dependent. Parameters which define the relationship are supplied to the controller (8) from a remote data processing system (13) which analyses flow rate and output pressure data transmitted from the controller, and also pressure data from a remote sensor (10) at'the critical point. At intervals, the controller (8) establishes a wireless connection with the remote system (13), to transmit logged data, and to receive parameters covering a period of time which is greater than the interval between communication sessions.

Description

The controller and the control system that are used for reduction valve
Technical field
The present invention relates to a kind of controller and control system of output pressure of the reduction valve that is used to regulate supply water to Water District.The present invention partly but not exclusively relate to the control of the pilot valve that changes reduction valve pressure.
Background technology
In a preferred embodiment, the present invention relates to, and be particularly related to the water supply of independent metering subregion (DMA) from the control of the hydraulic pressure of high pressure master activity supply water to Water District.Yet the present invention also can be used for other circulation system, for example is used for big industrial center.
The pressure of main water delivery system results from the gravity pressure reduction of the water in water pump and/or reservoir, water tower or the similar building.Hydraulic pressure in the sustainer supply line is much larger than the hydraulic pressure of life, agricultural or industrial requirement water.Usually, in the delivery system, a large number of users is distributed in a zone, and the water supply provides to said zone from main supply system through reduction valve (PRV).Usually, said zone is defined as independent metering subregion (DMA).
In general, the output pressure of PRV is fixed.Although reduction valve has multiple variation in design, the cut-off type pneumatic diaphragm valve is exactly the industrial standard of Britain.Some PRV designs are used for reducing the pressure of fixed amount.Other PRV meet the pilot valve of the position that changes valve, and therefore regardless of the size of input pressure and flow velocity, PRV provides a fixing output pressure automatically.Said fixing output pressure must be enough big to guarantee that suitable pressure runs through DMA, particularly under the situation under the greatest expected flow velocity, bears maximum head and press down the position of decreasing, and these positions possibly be peak and/or the distance P RV points farthest among the DMA.In general, for the output pressure of given PRV, the minimum point of hydraulic pressure is critical point, and generally is peak and/or distance P RV point farthest.Yet, be appreciated that in a special DMA to have more than one critical point, and said critical point may change.
A problem of this design proposal is that said fixation pressure may be higher than the necessary force value of suitable pressure that guarantees in said or each critical point place under special time or the specified conditions in DMA.As everyone knows, system pressure is related with leakage flow velocity and burst speed in DMA.Therefore, if output pressure is lower than the required fixation pressure when guaranteeing that critical point is in suitable pressure, will reduce to leak or the danger of explosion.
Someone's output pressure of proposing PRV should change, and such pressure can be answered demand and become, and therefore reduces the inner mean pressure of DMA, and reduces and leak and the problem of explosion.Other advantage of controlled pressure comprises that the tired minimizing of network of pipelines, Water District more continue the supply of supply pressure and the minimizing that pressure correlation consumes neatly.
GB 2405957 discloses the system by pilot valve control PRV.The pressure feedback platform comprises the gate valve that produces loss of head, and said loss of head increases when flowing through PRV gradually.Loss of head impels current direction to comprise the other pipe of Venturi tube.Pilot valve is by the pressure control in the Venturi tube.Said pressure reduces with the increase of flow velocity, therefore when flow velocity increases, causes that pilot valve increases the output pressure of PRV.
The someone proposes pilot valve and should utilize controller to be controlled by electric power.EP-0574241 discloses the system that pressure-time chart that a basis generates by historical data changes the PRV output pressure.Said pressure-TM system is predictable hypothesis based on demand over time.EP-0574241 also relates to an optional design proposal, and wherein output pressure is to control as the function of flow velocity rather than as the function of time.The storer of controller has comprised the related data with pressure and flow velocity, and needed pressure is pushed away by flow rate measurements.Adopt this design proposal, just must working pressure-time chart modulation.
Summary of the invention
From one side; The invention provides a kind of controller of output pressure of the reduction valve that is used to regulate supply water to Water District; Wherein, Said controller comprises and is used for receiving the flow velocity input end of flow velocity signal that the reduction valve of flowing through that is recorded by flow-rate sensors flows to the water of Water District, and the device that is suitable for providing according to flow velocity signal the representative data of the flow rate of water flow that the reduction valve of flowing through flows to the Water District; The output terminal of controller is used to provide signal to regulate the output pressure of reduction valve; Data storage device is used to store the parameter of representing flow velocity and the required output pressure relation of reduction valve, with the minimum hydraulic pressure of the critical point foundation expectation in the Water District; Treating apparatus, said treating apparatus are disposed for handling representative data of (i) flow velocity and (ii) stored parameters, so controller output end provides signal to cause the adjusting reduction valve, so that the required output pressure of corresponding flow velocity to be provided; Wherein, said parameter appears between water velocity and the required output pressure of reduction valve and relies on time relation; Said controller comprises the clock that the time representative data is provided; Said treating apparatus is disposed for the representative data of access time and the representative data of said stored parameters and flow velocity, so the signal that controller output end provided causes that reduction valve is adjusted to provide the required output pressure of corresponding said flow velocity and time.
Therefore, this respect of the present invention is characterised in that, utilizes the output pressure modulation based on flow velocity, but also has time dependence.Be meant that based on flow velocity system can answer changes in demand that fluctuation is made a response, obtain and be different from by the historical data analysis prediction.Yet the present invention can provide output pressure to control more accurately because the relational expression of flow velocity and output pressure be not fix but time dependent.For example, might as well consider this situation, have two users to need similar water consumption, but demand occur in one day different time sections.For example, first user has water demand in the daytime, and second user has water demand night.In any one situation, demand is similar with the flow velocity that records, and will adjust output pressure to the similar value of PRV based on the system of conventional flow velocity.Yet the user possibly extensively be distributed in different positions, and for example, first user distance PRV is very near, and second user distance PRV is far.Bigger fricting resistance loss can occur in the i.e. water supply to second user of farther distance, and therefore, when second user had water demand, supposition occurred in night in this example, and for same flow velocity, the output pressure of PRV will be bigger.The use of flow velocity and time factor makes said factor also can count.
The special time that the time dependence of the relational expression of flow velocity and required output pressure can be used in certain day and/or certain week and/or certain year is given speed definition pressure.One be can be and many skies and the calendar of the many periods in every day represented.Fate can be a week, or a few week, or one month, or some months, or 1 year.Time period in every day can be for example single hour, also can be several hrs.With an embodiment is example, has a calendar of having contained the every day in 1 year, and 8 periods of every day, 3 hours each periods, then be 2920 time periods non-leap year (standard calendar), and the leap year (leap year) is 2928 time periods.One or more parameters are all arranged for each time period, be used to define the relational expression between the required output pressure of measured value and PRV of flow velocity.Through the value of each time period is stored respectively; Perhaps for example; When the relational expression between the required output pressure of the measured value of flow velocity and PRV need change when drawing from the default relationship formula,, realize through adopting default value if Use Defaults when not having input value for the special time period.
As time goes on and newly-increased parameter is stored in any specific time, stored parameters can contain a year and a day for example or short slightly time, and in this design proposal,, and previously stored parameter is optionally removed.In preferred design proposal,, otherwise will be retained only if the parameter that old parameter is updated substitutes.
When using first, controller can be provided with by the basic parameter of a cover based on the experience gained of installation method that previous experimental period adopted and/or measuring method.Through analyzing the data of actual use controller gained, those parameters can be changed, and are the next time period to increase new parameter.This just need install a critical-point pressure sensor in said critical point (or each critical point).The output valve of critical-point pressure sensor will be handled with the corresponding data of output pressure that relates to PRV and flow velocity.For synchronous purpose, all data will be by timestamp (comprise time/dater, adopt time encoding etc.).The data that the critical-point pressure sensor is gathered, are gathered then or are transmitted so that be used for and analyzed by record in critical point.
CALCULATION OF PARAMETERS utilizes appropriate software and/or firmware program to carry out in controller, and wherein the pressure data of critical point will transmit or is transferred to controller from the center from critical point.Yet in preferred design proposal, CALCULATION OF PARAMETERS is carried out in the teledata treatment facility, and parameter will be transferred into controller then.This design proposal provides advantage, because processing procedure can be carried out under the situation that does not consume the controller electric weight that is provided by battery continuously, controller will have stronger processing power, be easier to calculate the data that other data source transmits.For example, parameter can be based on having the experience that obtains the field of similar system from other, and the data of similar system can be handled by central data processing facility.Environmental factor present or prediction all needs to consider whether for example weather forecast, temperature, precipitation forbid rubber hose and water barrow, are about to the competitive sports or the factors such as other activity, TV program list of carrying out.
In the use of teledata treatment facility, will between controller and remote data processing system, set up communication every now and then.Said communication can be through the mode of wired connection, for example through dialing or broadband connection, dedicated data line etc.Preferably, yet preferred said connection is wireless, because controller is set up in the environment that does not have communication connection and do not have electric power supply under many circumstances, this also is the reason that controller generally all uses battery.Such wireless telecommunications can be through the mode of for example mobile telephone network or other suitable wireless network or communication system.Preferably, because communication is to be initiated every now and then by controller, so battery electric quantity can not be wasted in and keep communication module operation and go up or wait for that the teledata treatment facility initiates in the communication.
When communication after setting up between controller and the remote data processing system, a message exchange will be arranged.Said controller is the record data of transmission relevant flow velocity and output pressure, and also can transmit other data, for example the input pressure of PRV, about the data of the water flow section of PRV, the relevant flow velocity that possibly store with other controller and the data of pressure.For example, can have a filtrator and sensor in the system and be used for measuring the hydraulic pressure of filtrator of flowing through, the teledata treatment facility just can determine the time that filtrator need clean or change like this.Passing the water flow section of PRV can be confirmed by following data, through surveying the position of valve closing element, perhaps directly utilizes for example position transducer, perhaps the pressure or the volume of the water of the diaphragms of the position through the reference control valve element.Other data also can offer remote data processing system by controller; If connecting, for example local temperature controller goes up suitable device; For example precipitation data, humidity, air pressure etc., but obtain in right sensors that said data slave controller is connecting or the surveying instrument.
The teledata treatment facility provides the suitable relational expression between a flow velocity, time and the required output pressure with the parameter of transmitting and storing in controller.This will consider at least some data of in communication session, sending from said controller, perhaps possibly be before to confirm that the new data that controller provides will participate in calculating before parameter be used for next conversational communication.
Controller has one or more environmental sensor, temperature sensor for example, and the relational expression between flow velocity and the required output pressure is not only based on the time, but also based on the output of said or each environmental sensor.
Substantially; Characteristic based on controller; In a preferred embodiment; Stored parameters presents the relation between the required output pressure of flow velocity and reduction valve of water, and said relation is as the function of time and change, and the time can be the some time in certain day and/or a year in some time and/or the week in one day.Preferably, stored parameters is relevant with daylong discrete time interval in containing a lot of continuous skies.
Preferably, controller comprises communication module, and said controller is configured to utilize the communication between foundation of said communication module compartment of terrain and the teledata treatment facility, and reception is stored in the parameter in the data processing equipment.Preferably, communication module is applicable to wireless telecommunications.
Preferably, controller is provided with the output pressure input end of the output pressure signal that is used to receive pressure sensor output output, and is applicable to according to said output pressure signal the device from the representative data of the output pressure of reduction valve is provided; Pen recorder, said pen recorder are arranged to the representative data through the output pressure of the representative data of the water flow velocity of time stamp data record inflow Water District and reduction valve; Controller is configured to utilize communication module every now and then record data to be sent to the teledata treatment facility.Preferably, controller further is provided with the input pressure input end that is used for receiving from the input pressure sensor input pressure signal, and is applicable to the device that the representative data of input pressure is provided to reduction valve according to said input pressure signal; The record data that are sent to the teledata treatment facility comprise the representative data of said input pressure.
According to another aspect of the present invention; A system is provided; Said system comprises and possesses above-mentioned any or whole controllers of characteristics; Be used to receive the record data of self-controller and the teledata treatment facility of transmission parameter to controller every now and then, wherein the teledata treatment facility further receives the critical-point pressure data from the pressure transducer that adjoins critical point, the critical-point pressure data comprise time stamp data; And the teledata treatment facility utilizes the record data of slave controller reception and the parameter that the critical-point pressure data computation will be transferred into controller.Preferably, the parameter that is sent to controller is longer than the time interval of carrying out data communication between controller and the teledata treatment facility during this period of time through obtaining after a while.Preferably, be sent to that the parameter of controller obtains through a week at least.Preferably, the controller stored parameters is through after a while, and increases ground by teledata treatment facility transmission parameters and change this section period stored parameters.
Be appreciated that the use of carrying out the controller of communication with remote data processing system provides lot of advantages, even when the parameter of relational expression between decision flow velocity and the required output pressure does not have the presentative time dependency relationships.Thereby, from another aspect of the present invention, the system that is used to adjust the reduction valve output pressure of supplying water to Water District being provided, said system comprises controller and remote data processing system; Wherein, Controller comprises: the flow velocity input end; Said flow velocity input end is used to receive the flow rate of water flow signal that flows to the Water District from the reduction valve of flowing through of flow sensor, and is applicable to the device that the representative data of the flow rate of water flow that the reduction valve of flowing through flows to the Water District is provided according to said flow velocity signal; Controller output end, said controller output end are used to provide the output pressure of signal with the adjustment reduction valve; Data storage device, said data storage device are used for the exemplary parameter of relational expression between flow velocity and the required output pressure of reduction valve of storage of water, and purpose is in order to set up minimum hydraulic pressure in the critical point of Water District; Said treating apparatus is configured to handle (i) flow velocity representative data and (ii) stored parameters, so controller output end provides signal to adjust reduction valve so that the required output pressure of corresponding flow velocity to be provided to impel; Output pressure input end, said output pressure input end are used for receiving the output pressure signal from pressure sensor output, and are applicable to the device that the representative data of reduction valve output pressure is provided according to the output pressure signal; Pen recorder, said pen recorder flow into through time stamp data record the Water District flow rate of water flow representative data and from the representative data of the output pressure of reduction valve; And communication module; Controller is configured to utilize communication module every now and then record data to be sent to remote data processing system; System is further characterized in that remote data processing system receives the record data of self-controller, and every now and then to the controller transmission parameter; Remote data processing system further receives the critical-point pressure data from the pressure transducer that adjoins critical point, and said critical-point pressure data comprise time stamp data; And remote data processing system record data and the critical-point pressure data of utilizing controller to receive, calculating will transfer to the parameter of controller.
Consider on the one hand from of the present invention this; The characteristic that the plurality of optional of previous controller of describing and system is selected can be included in this system; And this art recognized be time dependence for the relation between flow velocity and the required output pressure not necessarily, even then is the design proposal of more optimizing.
Can further understand, the use of carrying out the controller of communication with remote data processing system provides lot of advantages, even ought determine that the parameter of required output pressure is relevant with the time, and does not need relevant with flow velocity.Therefore, from another point of view, a system that is used to regulate the reduction valve output pressure of supplying water to Water District is provided, said system comprises a controller and a teledata treatment facility; Wherein, Controller comprises and is used to provide signal to adjust the control output end of the output pressure of reduction valve; With the clock that is used to provide the time representative data, data storage device, said data storage device is used to store the exemplary parameter of the required output pressure of reduction valve that presentative time relies on; Purpose is in order to set up minimum hydraulic pressure in the critical point of Water District; Treating apparatus, said treating apparatus are disposed for handling (i) time representative data and (ii) stored parameters, so the signal of controller output impels the adjustment reduction valve so that the required output pressure of correspondence time to be provided; It is characterized in that; Controller comprises that further is used to receive the output pressure input end from the output pressure signal of pressure sensor output; And be applicable to the device that the representative data of reduction valve output pressure is provided according to the output pressure signal; Pen recorder; Said pen recorder is used for the representative data through time stamp data record reduction valve output pressure, and communication module, and controller is configured to utilize communication module to carry out communicating by letter of record data with the teledata treatment facility every now and then; System is further characterized in that; The teledata treatment facility receives record data and the transmission parameter of self-controller to controller every now and then; The teledata treatment facility further receives the critical-point pressure data from the sensor that adjoins critical point; The critical-point pressure data comprise time stamp data, record data and critical-point pressure data that the teledata treatment facility utilizes slave controller to receive, and calculating will be transferred to the parameter of controller.
Consider on the one hand that from of the present invention this characteristic that plurality of optional of previous controller of describing and system is selected can be included in this system, and be that output pressure must not be the flow velocity dependence in this art recognized.
From another point of view, the present invention is provided for regulating the system of the reduction valve output pressure of supplying water to Water District, and said system comprises controller and teledata treatment facility; It is characterized in that controller comprises that one is used to provide signal to impel the controller output end of the output pressure of regulating reduction valve; Data storage device; The exemplary parameter of said data storage device stores reduction valve output pressure; Purpose is that one of correspondence or more measured value are set up minimum hydraulic pressure in the critical point of Water District; Treating apparatus, said treating apparatus are disposed for handling representative data of (i) one or more measured value and (ii) stored parameters, so the signal of controller output impels and adjusts reduction valve so that the required output pressure of corresponding measured value to be provided; Be used for receiving output pressure input end from pressure sensor output output pressure signal; And the device that is suitable for providing the representative data of reduction valve output pressure, pen recorder, said pen recorder are used for the representative data through time stamp data record reduction valve output pressure; Also have a communication module, controller is configured to utilize communication module to carry out communicating by letter of record data with the teledata treatment facility every now and then; System is further characterized in that; The teledata treatment facility receives record data and the transmission parameter of self-controller to controller every now and then; The teledata treatment facility further receives the critical-point pressure data from the pressure transducer that adjoins critical point; The critical-point pressure data comprise time stamp data, record data and critical-point pressure data that the teledata treatment facility utilizes slave controller to receive, and calculating will be transferred to the parameter of controller.
Measured value can be the representative data of for example previous described flow velocity and/or time and/or environmental factor.In preferred design proposal, the signal that controller output end provides impels regulates reduction valve so that the required output pressure of corresponding flow velocity and time to be provided.Substantially, consider on the one hand that the characteristic that the plurality of optional of previous controller of describing and system is selected can be included in this system technically practically from of the present invention this.
In certain embodiments, when remote data processing system will be transferred to the parameter of controller in calculating, further utilized the related data of environmental factor.Environmental factor can comprise that weather forecast and/or water restrictions and/or user normally use the variation of the prediction of aqueous mode.
In the system of others of the present invention, in design proposal preferably, the control output end of controller connects the pilot valve of reduction valve.In certain embodiments, design proposal is that subsequent use pilot valve just is activated under the situation that pilot valve or controller break down.Alternatively but relatively inadequately preferably, PRV is direct acting, promptly do not need pilot valve.
Stored parameters can be stored in the question blank in the controller, and this optional characteristic that depends on special aspects of the present invention and use is a multidimensional.Processor can be according to the required output pressure of measured-value inquiry of flow velocity or time etc.
In an alternative design proposal, stored parameters is used in the function of being handled by the treating apparatus of controller.Therefore, said function can comprise one or more constant, and its value is stored.Said function by the controller computing can be directly or required output pressure is provided indirectly, and provides actual pressure data or other data, these data will cause output pressure to the correct value of pilot valve regulation and control reduction valve.For example, function can be the function about the pressure differential between flow velocity and critical point and the reduction valve output terminal.A given special flow velocity, pressure differential will be calculated subsequently.Based on the storing value of the minimum required pressure of critical point, the output pressure of required PRV will be subsequently by computing.
Minimum required pressure can be in time function; Said function is the function of time in one day, the function, the function of temperature etc. of time in a year; For example through storage certain constantly/certain day different value is in look-up table, perhaps through change the function of minimum required pressure based on time, date or other factors.Perhaps, function can calculate required pressure differential, and therefore for given flow velocity, the required pressure output of PRV directly provides.Function can be taken the variation based on the required minimum pressure of time, date or other factors into account.
In the implementation of this type of embodiment, controller can be stored a program and be used for operating function, and utilizes one or more parameter, and promptly constant defines flow rate measurements an of the best and the relationship between the required output pressure.For example, the assurance critical point minimum pressure of supposing PRV is P COutput press P OutputMeet following equality with the relation of flow rate F:
P Output＝a+bF+cF 2
Under the standard state, parameter a in the best relation formula of the measurement data of specific region, the value of b and c is confirmed, and is stored in the control device as parameter.In the execute phase, flow rate F is to measure gained, and P is pressed in required output OutputBe result of calculation.Pressure regulation device is regulated to subsequently and reaches required output pressure P Output
In a possible embodiment, the following form of the equality of definitional relation:
P Output＝a+b(F) c
Yet the notable attribute of this type embodiment of the present invention is to be not limited to any special relational expression.
What be used for function can result from the canonical measure data automatically with calculated parameter.Said process can be accomplished through the external data treatment facility, for example notebook computer, PDA(Personal Digital Assistant) or similarly equipment, or teledata treatment facility.Yet it is possible that parameter carries the sequential operation generation by controller.Thereby the microprocessor in the controller can generate said parameter from data recorded.
The data about flow velocity of record can be generated by independent measurement mechanism, store and offer the system that comes calculating parameter arbitrarily through separate unit or the control device of itself respectively.Preferably, yet controller itself directly receives measurement result from the flow rate measuring device that is used in the execute phase simultaneously, and stores these and be used for calculating parameter or be used to transfer to the remote data processing system that will calculate them.The pressure survey that is used for PRV output can be handled through similar mode.
Consider the pressure survey of critical point, in the design proposal of utilizing the controller calculating parameter, pressure possibly measured through the far-end unit of critical point, but can be used for control device, is used for handling through the various control device.Data can be stored in the portable unit, or through the cable data ways of connecting, or the mode of wireless connections is for example infrared, bluetooth TMTransfer to such portable unit Deng communication mode.Portable unit can be single memory device, or PDA, or notebook computer for example.Measurement data can migrate to control device from portable unit, once more through wired or wireless connection.Perhaps, data can directly transfer to control device from pressure measurement cell, or through wired connection or through the remote-wireless ways of connecting, for example use cellular data network.So direct communication makes and under standard state, has reduced necessity that the user interferes.The data of transmitting will be by the permission of the representative data of a series of pressure read values and for example relevant time/dater time/date data in synchronization.Data can be data original or that derive, for example statistical packages data.Data can be compression or encrypt etc.Also comprise the data of for example discerning pressure measurement cell and the scheme of for example just taking.
In this type of the method for manually assisting of embodiment calibration, measure by the implementer and handle, he selects best curve, and therefore relevant parameter can be enrolled control device.This possibly be the initial stage before auto-calibration uses.Under the automatic mode of calibration, parameter is confirmed by a program in control device.Auto-calibration is in the suitable maintenance phase, to carry out periodicity to calibrate again subsequently.The mode of the remote pressure measuring unit through transmission measurement value to control device for good and all is installed, fully automatic system will use calibration automatically automatically with suitable interval, and this can be lacked at interval relatively.As indicated above, this system can utilize any appropriate protocol to cover a remote-wireless communication network.In an embodiment of this design proposal, can utilize the SMS text message.
In state-of-the-art configuration; Pressure data in a period of time that provides through auto-calibration and the permanent remote pressure measuring unit of installing; Parameter can be by adjustment regularly, in order to the condition that consider to change such as user change with aqueous mode, or the change of number of users or type etc.System can be suitable for the environment of these variations, and does not need expert engineer's interference.
According to each side of the present invention; The Determination of Parameters that wherein will be stored in the controller is carried out by remote data processing system; The method of more than describing can be carried out in remote data processing system; Remote data processing system will receive the pressure data of critical point through above-mentioned any means, although the mode preferably through direct communication.No matter be the function of mentioning before the CALCULATION OF PARAMETERS that is used for function or is included in one or more question blank can be utilized, or utilize critical point to be used for the record data of pressure, the output pressure of PRV and other data of for example flow rate measurements and time and on the teledata treatment facility, carry out through suitable statistical technique.Suitable statistical method includes, but not limited to the learning method of linearity or nonlinear regression analysis and for example neural network.Various input data for example weather and time do not need to know in advance or suppose for the relative meaning of confirming or the contribution of required output pressure, but can be from also optionally extracting through study the resulting data of continuous use of one period training period or a period of time.
Be appreciated that critical reference point simultaneously, as indicated above, critical point maybe be more than one and the minimum critical point of supply pressure may change.Through utilizing the remote pressure measuring unit of a plurality of potential critical points, system can guarantee that real critical point had in special time arbitrarily and be used for confirming for best relation formula or other relational expression the reading of parameter.Other design proposal will be possible, and wherein the reading of a plurality of critical points is average.
From others; The invention provides a kind of control device that is used for the pilot valve of water supply system reduction valve; This device is according to the output hydraulic pressure of the relation control reduction valve of preset required output pressure and flow velocity, and preset relation is to be confirmed by a required fluid output pressure of demonstration and the equality of the relation of the flow velocity function that comprises at least one constant, wherein; The value and the program of (b) confirming function of control device storage (a) constant; Therefore for the measured value of given output flow velocity from reduction valve, said or each constant of control device utilization storage and output flow rate measurements calculate required output fluid pressure through the computing of function.
In preferred design proposal, storing value said or each constant is time dependent, and therefore, when carrying out functional operation in the special time, the output water flow pressure is confirmed the dependence time.
In an embodiment of above-mentioned any aspect of the present invention; Wherein used flow velocity; Mensuration for the suitable pressure of given flow velocity can be through any proper spacing; And if flow velocity carried out frequent sampling, can be continuous basically, or through preset interval for example several seconds, somewhat or longer.The change of the flow velocity of measuring possibly be one section definite change of time, and/or the variation of minimum a period of time.Preferably, control device is battery powered and can under the situation of no worker monitor, works a period of time.Therefore, the energy consumption that is used for deal with data and adjustment pilot valve will reduce.Preferably, and avoided frequent adjustment.
Although be appreciated that pressure and flow velocity have been done reference, in fact system possibly be based on the raw data work of expression pressure or flow velocity, or is the function of raw data based on derived data, or the pressure or the flow velocity that calculate.Employed said accurate mathematical method is not original and comprised program in various aspects of the present invention, and said program provides equal result through any processor to the signal that receives the self-sensing device.
Therefore, for example, question blank can be stored raw value, and said data value is the operation of the relevant pilot valve adjuster of the for example anglec of rotation, the said anglec of rotation itself be not pressure survey required definite but will determine output pressure.Similarly, primary flow speed sensors data can be used when inquiry pressure correlation value, if the flow velocity expectation, even without providing flow velocity also can be processed.
Although the said water that the present invention relates to is appreciated that various aspects of the present invention also are applicable to other liquid, or even the flow speed control of gas, and the aspect of art recognized of the present invention is included in the use in this type of fluid.Be appreciated that equally the Water District is not limited to comprise resident's zone, also can comprise big industrial center.
In preferred systems according to the present invention, bear some or all be used to calculate the responsibility how hydraulic pressure changes according to flow velocity to regional supply line from reduction valve by central data processing facility.The value that central data processing facility deposits analysis in, the force value of flow velocity, output pressure and or more critical point for example, and will carry out described computing before and confirm suitable relational expression.Data will transfer to control module with suitable interval from central equipment, will regulate pilot valve based on the mode that output pressure is confirmed with these type of data afterwards.This process can be accomplished through the algorithm that utilizes central equipment to pass a parameter, but one of central equipment transmission or more parameter list are to control module in preferred design proposal, and therefore, for given flow velocity, suitable pressure can be queried to.Therefore alleviated the work of control module necessary processing.
In preferred design proposal, the relation of flow velocity and pressure changes in time, and the for example intraday time, whether the time in 1 year is weekend or public holidays perhaps, also can be weather conditions perhaps, like temperature or rainfall.Offer the data of controller, for example lookup table data can be a multidimensional, and can take into account these aspects.Controller can have a clock/calendar guaranteeing inquiring correct value, and/or weather sensor for example temperature sensor, light sensor, or precipitation sensor for example is used in the sensor of control wiper on the automobile.
Remote central equipment oneself can be taken for example these factor into account, for example receives the data from the weather station, and transmits proper parameters in case of necessity to controller.Yet in preferred design proposal, controling appliance has clock/calendar and is provided with based on the time and belongs to one day/week/year etc. and guarantee the value that its use is suitable.This just guarantees that controller can continue to operate and be provided for the suitable value of equal time at weekend when communicating interrupt occurring.If the daily data that controller need rely on central equipment for example to provide, the Communications failure that for example produces Saturday will cause inaccurate value to be used for Sunday.When calculating will be transferred into the parameter of controller, although central equipment can utilize predicted condition, for example this locality of the environmental baseline of temperature monitoring was more accurate probably, more timely.
Primitively, controller is provided with by " safety " initial data.Central equipment is subsequently with the performance and the output of monitoring record, and utilizes for example previous described those technology to confirm the variable quantities with the parameter that optimum performance is provided.Typically, comprise a continuous study scheme here, wherein parameter is adjusted to and for example is used for one day time, at first with big relatively unit-for example day/night, 6 or 3 hours the time period-follow trickleer-for example drop to one hour.Similarly adjustment can be to be to formulate time in 1 year, is month then in season or certain day or the like in the week-for example, is week more then; Whether be on ordinary days/weekend, be the independent date then.Originate in parameter preset, stored parameters changes with the change of mode of learning.
Central equipment will transfer to control module to Data Update with arbitrarily preset interval, for example every day, weekly, half day, per hour or the like, or irregular radix.In order to reduce processing procedure and to preserve the energy content of battery, preferred combination should be to upgrade every day, and as indicated above, and preferably, controller is initiated communication.
Central equipment can be considered unusual environmental factor, for example Changes in weather or other influence factor of burst, and for example those influences the competitive sports of the factor of electricity needs-for example great-or other factors such as rubber hose and/or water barrow use ban.If for example must use hose saddle, also possibly have for example fire brigade an of mechanism, be used for influencing each other, being used for being provided with maximum pressure, or be used for some other preset standard with central control station or local control module.Control module can the detection demand suddenly change, and whether identification has used hose saddle as far as possible, thereby, open supply valve comprehensively.Similarly, if find great leak or other mistake,, also should possess one and water supply company associated device in order to reduce pressure to minimum value.
Substantially, processing procedure can be between central data processing system and local controller, realize sharing to need ratio arbitrarily, from the great majority work of treatment by this locality be accomplished to great majority or all work of treatment remotely accomplish by central control station.
Central service/control station can a plurality ofly be in diverse location through relevant register management, be in distinct supply area, or even is in the controller of the different regions of a country.Data communication between central control station and control module or the register can be carried out with the mode of describing before suitable mode comprises arbitrarily.
The function of central server/control station possibly be assigned to the physical server of a plurality of diverse locations.
Control module possibly comprise extra function, measuring water quality amount parameter for example, and like Ph value, conductivity, turbidity or dissolved oxygen DO, these values can be given central control station with the gap report of appointment.
Put it briefly; From another aspect of the present invention; The invention provides a program that is used for the controlled pressure adjusting gear; Through control device so that other system of pressure stage that adjustment is used for the controlling liquid supply area is supplied to the pressure of the liquid of regional supply line from reduction valve, in the system, reduction valve from main supply line to the regional supply line supply fluid of serving regional supply network for many liquid users in the zone; System comprises that measurement is from the flow rate measuring device of reduction valve to the flow rate of liquid of regional supply line supply; And in system, pressure adjustment assembly is regulated from the pressure of reduction valve to the liquid of regional supply line supply, wherein based on flow rate measurements:
Control device disposes data; These data are supplied to the pressure measuring value of the liquid of regional supply line from reduction valve by the Long-distance Control station; With the pressure of liquid in the regional supply network of critical point, and, reduction valve derives from being supplied to the flow velocity of liquid of regional supply line; And control device is in the communication period with the Long-distance Control station every now and then, and by data updated it is configured.
Preferably, control module comprises a clock and/or calendar and the data that provided by the Long-distance Control station, and control module is as the function adjustment of the time pressure from the liquid of reduction valve supply.
Substantially, can adopt wired connection with the communication between the ingredient in an embodiment among the present invention, for example serial data communication (RS232), USB (USB), Firewire ( TM), LAN or technology such as WAN, optical fiber connection; Short-distance wireless communication is like technology such as infrared (IrDA), inductive coupling, bluetooth, Wi-Fi; Or telecommunication, utilize suitable radio frequency and agreement, for example utilize the technology such as cellular mobile communication network, wireless communication networks of SMS infotech.Communication between each assembly possibly be directly through network, the Internet for example, or through control center etc.An assembly possibly be configured to the webserver, thereby is connected with it with visit data and has just become simply.
The reference design scheme, wherein function carries out computing by controller, has comprised various aspects of the present invention.
Thereby; From one side; The invention provides one and be used in other program of liquid feed region controlled pressure level, wherein reduction valve from main supply line to regional supply line supply fluid, for liquid users many in the zone serves regional supply network; Flow rate measuring device is used to measure the flow velocity that is supplied to the liquid of regional supply line from reduction valve; Pressure adjustment assembly is regulated the fluid pressure that is supplied to regional supply line from reduction valve based on flow rate measurements, it is characterized in that, in calibration phase:
(a) provide a kind of first device for pressure measurement to be used to measure the fluid pressure that is supplied to regional supply line from reduction valve;
(b) in regional supply network away from the choice of location critical point of reduction valve, and provide a kind of second device for pressure measurement to be used to measure the pressure of the liquid of the critical point that is in regional supply network;
(c) through after a while, the measured value that flow rate measuring device, first device for pressure measurement and second device for pressure measurement obtain is based on time synchronized and be stored;
(d) utilize data processing equipment; The measured value of analyzing stored is also established at least one parameter assignment and is given function; Thereby define the pressure of the liquid that a best relation formula supplies from reduction valve to regional supply line about (i) and be in the representative data of the difference the pressure of liquid of critical point of regional supply network and the representative data of the flow velocity of the liquid (ii) supplied from reduction valve to regional supply line;
(e) said parameter or each parameter are stored in and are used to regulate the control device of device that is supplied to the pressure of regional supply line liquid from reduction valve;
And wherein, the implementation phase in,
(g) measured the flow velocity that is supplied to the liquid of regional supply line from reduction valve; And
(h) for flow rate measurements; Function and said or each stored parameters according to definition best relation formula; Control device is confirmed a suitable pressure for the liquid that is supplied to regional supply line from reduction valve, and purpose is in order to obtain the required minimum pressure of liquid in the critical point that is in regional supply network;
(i) control device controlled pressure adjusting gear will be in definite suitable pressure from the liquid that reduction valve is supplied to regional supply line like this.
In a design proposal, the function that has defined the best relation formula can be following form:
P＝a+b(F) C
The P representative pressure, F represents flow velocity, a, b and c representation parameter.
From another point of view; System at the stress level that is used for the controlling liquid feed region; A program that is used to dispose control device is provided, and control device will be used to control and be used to regulate the pressure adjustment assembly that is supplied to the fluid pressure of regional supply line from reduction valve.In said system; To regional supply line supply fluid, for liquid users many in the zone serves regional supply network, said system comprises and is used to measure the flow rate measuring device that flows to the flow rate of liquid of regional supply line from reduction valve reduction valve from main supply line; And in this system; Pressure adjustment assembly is regulated from the pressure of reduction valve to the liquid of regional supply line supply based on flow rate measurements, it is characterized in that said program may further comprise the steps:
(a) be provided for measuring first device for pressure measurement of pressure that is supplied to the liquid of regional supply line from reduction valve;
(b) in regional supply network away from the choice of location critical point of reduction valve, and be provided for second device for pressure measurement of fluid pressure of the critical point of measured zone supply network;
(c) after after a while, utilize flow rate measuring device, first device for pressure measurement and second device for pressure measurement to obtain measured value, measured value is based on time synchronized and be stored;
(d) deposit control device in and dispose control device through being used for function parameters; So that definition best relation formula; The pressure of the liquid of supplying from reduction valve to regional supply line about (i) and be in the representative data of the difference the pressure of liquid of critical point of regional supply network and the representative data of the flow velocity of the liquid (ii) supplied from reduction valve to regional supply line;
Wherein:
Control device is suitable for flow rate measurements; According to function said or each stored parameters with definition best relation formula; In order to reach required liquid minimum pressure in the critical point that is in regional supply network, control device will confirm to be used for being supplied to from reduction valve the suitable pressure of the liquid of regional supply line; And therefore control device is in the controlled pressure regulating device liquid of confirming suitable pressure and is supplied to regional supply line from reduction valve.
From another point of view; System at the stress level that is used for the controlling liquid feed region; A control device that is used for the controlled pressure adjusting gear is provided, and pressure regulation device is used to adjust the pressure that is supplied to the liquid of regional supply line from reduction valve, in this system; Reduction valve from main supply line to regional supply line supply fluid; For liquid users many in the zone serves regional supply network, said system comprises and is used to measure the flow rate measuring device that is supplied to the flow rate of liquid of regional supply line from reduction valve, and in this system; Pressure regulation device is adjusted the pressure that is supplied to the liquid of regional supply line from reduction valve based on flow rate measurements, wherein:
Control device is by at least one parameter configuration; This parameter is the synchro measure value that is supplied to the fluid pressure of regional supply line from reduction valve; The fluid pressure that also has the critical point of regional supply network, and from reduction valve is supplied to the flow rate of liquid of regional supply line, derive; Said at least one parameter is to be used for function; So that definition best relation formula; The pressure of the liquid of supplying from reduction valve to regional supply line about (i) and be in the representative data of the difference the pressure of liquid of critical point of regional supply network and the representative data of the flow velocity of the liquid (ii) supplied from reduction valve to regional supply line;
Control device is suitable for receiving the measured value of the flow rate of liquid of supplying from reduction valve to regional supply line;
Wherein:
Control device is suitable for flow rate measurements; Based on said parameter or each parameter of function with definition best relation formula; In order to reach required liquid minimum pressure in the critical point that is in regional supply network, control device will confirm to be used for being supplied to from reduction valve the suitable pressure of the liquid of regional supply line; And control device is the controlled pressure regulating device, thereby is in the liquid of confirming suitable pressure and supplies to regional supply line from reduction valve.
From another point of view; System at the stress level that is used for the controlling liquid feed region provides a program that is used for the controlled pressure regulating device; Through control device so that regulate the pressure that is supplied to the liquid of regional supply line from reduction valve; In this system, reduction valve from main supply line to regional supply line supply fluid, for liquid users many in the zone serves regional supply network; Said system comprises and is used to measure the flow rate measuring device that is supplied to the flow rate of liquid of regional supply line from reduction valve; And in this system, pressure adjustment assembly is regulated the pressure that is supplied to the liquid of regional supply line from reduction valve based on flow rate measurements, wherein:
Control device is at least by a synchro measure value that is supplied to the fluid pressure of regional supply line from reduction valve; The fluid pressure that also has the critical point of regional supply network, and be supplied to the parameter configuration that derives the flow rate of liquid of regional supply line from reduction valve; Said at least one parameter is used for a function so that definition best relation formula; The pressure of the liquid of supplying from reduction valve to regional supply line about (i) and be in the representative data of the difference the pressure of liquid of critical point of regional supply network, and the representative data of the flow velocity of the liquid of (ii) supplying from reduction valve to regional supply line;
Control device receives the flow rate measurements of the liquid of supplying from reduction valve to regional supply line;
And wherein:
For flow rate measurements; Function and said or each stored parameters based on definition best relation formula; In order to reach required liquid minimum pressure in the critical point that is in regional supply network, control device is confirmed a suitable pressure that is used for being supplied to from reduction valve the liquid of regional supply line; And therefore control device controlled pressure regulating device is in the liquid of confirming suitable pressure and is supplied to regional supply line from reduction valve.
From another point of view, the control device of the pilot valve that is used for the liquid delivery system reduction valve is provided, the relational expression that this device is preset; Control the liquid of reduction valve based on the flow velocity output of reduction valve and press output; Said preset relational expression is definite by the function that concerns between required output liquid pressure of expression and the flow velocity, and comprises at least one constant, wherein; The value of said or each constant of control device storage (a) and (b) program of operation function; Therefore for the measured value of the output flow velocity of given reduction valve, said control device will utilize said or each constant and output flow rate measurements of storage, calculate required output liquid pressure through the computing of function.
The a lot of characteristics that are appreciated that various aspects of the present invention are applicable to that wherein control method inquiry is used to adjust the design proposal of value of the output pressure of reduction valve.
In all its bearings; The present invention comprises the method for method, system and the operating system of controller and operation control; For example adjust the method for the output pressure of the reduction valve of supplying water to Water District, the method for the use of system, remote data processing system and operation remote data processing system, combination are used for the controller of the pilot valve of reduction valve, the controller that combines pilot valve and reduction valve or the like.
Also be appreciated that based on various aspects of the present invention, combined to be used in the characteristic outside those aspect scopes among the embodiment of some controllers, system and method.
For example; According to an invention disclosed; This invention provides the controller of the output pressure of a reduction valve that is used to adjust supply water to Water District, it is characterized in that controller comprises: be used to provide the controller output end of signal with the output pressure of adjustment reduction valve; Data storage device, the exemplary parameter of relational expression between the required output pressure of storage reduction valve and the measured value is to set up minimum hydraulic pressure in the critical point of Water District; Treating apparatus configuration is used for handling (i) measured value representative data and (ii) stored parameters, so the signal of controller output is to adjust reduction valve so that the required output pressure of corresponding measured value to be provided in order to impel; It is characterized in that one of them measured value is an environmental factor.
As indicated above, environmental factor can be temperature, precipitation etc.Another measured value can be flow velocity and/or time, and use-pattern is as discussed previously.Perhaps, measured value can be the pressure measuring value of critical point.
According to disclosed another invention, the controller of the output pressure of a reduction valve that is used to adjust supply water to Water District is provided, wherein, controller comprises: be used to provide signal to the controller output end of pilot valve with the output pressure of regulating reduction valve; The exemplary parameter of relational expression between the required output pressure of data storage device stores reduction valve and at least one measured value, purpose are in order to set up minimum hydraulic pressure in the critical point of Water District; Treating apparatus is configured to handle representative data of (i) said or each measured value and (ii) stored parameters, so the signal of controller output is in order to impel pilot valve adjustment reduction valve so that the required output pressure of said or each measured value of correspondence to be provided; It is characterized in that any:
(i) subsequent use pilot valve is provided for the adjustment reduction valve, and controller is configured to activate subsequent use pilot valve when controller or pilot valve make a mistake incident when detecting; And/or
(ii) controller is provided with the input of the representative data of the water flow section that is used to pass reduction valve; And/or
(iii) controller is provided with the input of the representative data of the working range that is used for the movable main valve of reduction valve; And/or
(iv) controller is provided with in the water supply of Water District, the representative data of the water pressure that the process filtrator falls.
In a preferred embodiment, the closing member of movable main valve should prevent to exceed opereating specification.Preferably, this scope is set to drop to minimum so that will betide the possibility of generation of turbulent flow and/or the cavitation in PRV inside or downstream.In certain embodiments, opereating specification is set to the openness of 10%-75%.
These examples are the technical characterictic of the novelty used in the literary composition, rather than those descriptions for the creative technical characterictic of patent right of the present invention.
For example; Depend in the system of flow velocity at output pressure; Another invention disclosed has solved when supply water be in the high pressure conditions problem of pressure drop suddenly then, and for example regional water pump quits work suddenly, or the problem that causes because of situation such as certain reason PRV output change suddenly.In this case, energy potential in the system is with the user who continues to feed back to the zone, but the flow velocity that controller is surveyed considerably falls after rise.If the falling of this flow velocity is used to reduce output pressure to the lower value of reduction valve; Because and the relational expression of setting up between flow velocity and the required output pressure is consistent; In case potential energy available in the system has dissipated, with the demand that insufficient pressure is recovered with reply occurring.
Thereby; According to another invention disclosed, the controller of the output pressure of a reduction valve that is used to regulate supply water to Water District is provided, it is characterized in that; Controller comprises: controller output end is used to offer the output pressure of signal of pilot valve with the adjustment reduction valve; Be used to provide the device of the representative data of flow velocity; Data storage device stores presents the parameter of the relation between the required output pressure of flow velocity and reduction valve, reaches required minimum hydraulic pressure with the critical point in the Water District; Treating apparatus configuration is used for handling representative data of (i) flow velocity and (ii) stored parameters, so the signal that controller is exported is in order to impel pilot valve adjusting reduction valve so that the required output pressure of corresponding flow velocity to be provided; It is characterized in that along with the decline of instantaneous pressure drop and instantaneous velocity reaches the pairing value of user's request when following, when the flow velocity consistent with user's request do not recover, output pressure will be maintained on the value of representative data of corresponding flow rate measurements.
The pilot valve of using in the system according to the invention is described in this, and pilot valve has novel characteristics; And therefore from another aspect of the present invention; Provide one can with the pilot valve of said system and controller and usefulness, also can with any other design proposal and usefulness, comprise the control operation of known design scheme, pilot valve or hydraulic braking reduction valve; Also comprise shell; Shell is installed and is used to respond first valve with respect to the motion of the shell and second valve of reduction valve output pressure, also be useful on the regulator of adjustment with respect to the position of second valve of shell, pilot valve is suitable for controlling the operation of the relative position of corresponding first and second valves of reduction valve; It is characterized in that; One of them comprises a hole first and second valves, and another comprises that an arrangement is used for when relative gliding motility, passing the blocking-up portion in hole, therefore; Relative motion between first valve and second valve is changing the water flow section of passing the hole, and adjuster confirms that the water flow section of hole will be used for the relative position of the first and second given valves.
Thereby, in the use, for the output pressure of PRV under the given equilibrium state, the quantity decision of the hole that the corresponding effective water flow section in hole will be blocked by the portion of being blocked.If adjuster is used for respect to hole slip blocking-up portion subsequently, effective water flow section in hole will be changed so, and the current of the pilot valve of flowing through will change, and the output pressure of reduction valve also will change.For selected PRV output pressure, pressure keep the relative motion that will lean on valve, therefore the quantity of the hole that blocks of the portion of being blocked will change.The someone finds that this design will provide the more accurate and control more reliably than conventional design.
Adjuster can provide in response to the relative gliding motility between the blocking part of the output pressure of reduction valve and the hole.This respect can be used for realizing that the rotation of parts causes the lengthwise movement in blocking-up portion or hole through making of linear element.In a preferred embodiment, yet, the relative rotary motion in blocking-up portion and hole is provided.In a feasible design proposal, the relative rotation between blocking-up portion and the hole will cause that the hole gets clogged gradually or open that the edge of blocking-up portion passes the hole with counterrotating direction.In preferred design proposal, yet the motion that the edge through blocking-up portion passes the hole with the direction of turning axle, the relative rotation between blocking-up portion and the hole will cause that the hole gets clogged gradually or be open.Therefore, blocking-up portion possibly have an axial range that changes in a circumferential direction.In such design proposal, the afterbody axial vane surface of blocking-up portion will be provided as a suitable profile.Profile can be straight line, curve or other required profile arbitrarily, and the pore water flow section changes required mode when relative rotation to be provided.In preferred design proposal, the bottom end surface of blocking-up portion is designed to the inclined-plane.When relative rotary motion, the different piece of profile is passed the apparent motion that hole extends and cause the edge that passes hole.
Here have a plurality of holes and a plurality of blocking-up portion.Blocking part possibly be provided as single parts.In preferred design proposal, the breaking member of rotation is provided with a plurality of blocking-up portion, and each part has the end regions of the axial range that having of portrait orientation change on the circumferencial direction.In a real example, the someone finds that the design proposal with two holes of directly settling and two symmetrical blocking-up portions of rotating has provided satisfied result.
In a preferred design proposal, first valve part is provided with the hole and is arranged to be used for to respond the lengthwise movement of the output pressure of reduction valve.Second valve part is chosen other scope that is used in except by the motion of the blocking-up portion of adjuster effect.Preferably, under this design proposal, second valve part is arranged to be used for carrying out the rotation of corresponding shell, so that pass the water flow section that control punch is come in the hole through slip blocking-up portion.
First valve part can be the form of the parts of longitudinal extension tubulose, the output pressure fluid communication of it and reduction valve, and have a delivery outlet by the control of blocking-up portion, delivery outlet communicates with the valve pocket that reduces pressure.
In a preferred design proposal, pilot valve comprises three chambeies of arranging along axle, is called first chamber, second chamber or intermediate cavity and the 3rd chamber.The output pressure fluid communication of first chamber and reduction valve, and be provided with spring-loaded when pressure changes the flexible diaphragm of deflection vertically.First valve part is installed the motion that is used for flexible partition.First valve is to extend vertically with the form of tubulose, passes intermediate cavity and opens at the 3rd chamber.This pipe has the radial hole of opening to intermediate cavity, intermediate cavity and decompression valve pocket fluid communication.Intermediate cavity is separated with first chamber through the first flexible mounting, separates with the 3rd chamber through the second elasticity mounting.First chamber links to each other through pipeline with the 3rd chamber, and therefore, the 3rd chamber receives the fluid output pressure from reduction valve.Fluid is through the open end of the pipe of first valve, also through via hole.
In such design proposal, second valve is to be installed on the pipe in the bore region with common cylindric plug form, and wherein pipe has circular xsect, and plug has a forming ends towards the pipe inlet in the 3rd chamber.The sealing of plug and tube wall combines and is rotatable along the y direction of pipe, so that the degree of change plug blocked hole.In this design proposal, along with the rotation of plug, can open or get clogged gradually fully in the hole.Wherein has the position that a hole is fully closed.
In preferred design proposal, the part of pipe is provided with an opening that opens at first chamber below the said plug, and therefore, arbitrary pressure of plug is fully to equate.This has just been avoided may hindering because of the pressure difference precession of plug.
Description of drawings
Below with reference to accompanying drawings, only some preferred embodiment of the present invention is described with the mode of example, wherein:
Fig. 1 is the synoptic diagram of water distribution system of the present invention;
Fig. 2 is the diagrammatic cross-section of the pilot valve that is connected with main reduction valve, and wherein PRV is in open state;
Fig. 3 is the diagrammatic cross-section of the pilot valve that is connected with main reduction valve, and wherein PRV is in closure state;
Fig. 4 is the sectional view of pilot valve of the present invention;
Fig. 5 is the sectional view of the axle in the pilot valve; With
Fig. 6 is the synoptic diagram of controller of the present invention;
Embodiment
With reference to the accompanying drawings; Fig. 1 illustrates a sustainer water supply line 1; Sustainer water supply line 1 is the water of P1 through pipeline 46 to reduction valve (PRV) 44 supply hydraulic pressure; Passing through output channel 48 again is the water of P2 to the output hydraulic pressure that measured zone (DMA) 3 supplies reduce, and the DMA zone has comprised a large amount of pipelines 4 to a large amount of users 5 water supply.One of them user 5 is set to critical point CP since from critical point CP to PRV 44 distance and/or the height about PRV of critical point, the pressure P 3 of this critical point place is starkly lower than the pressure of other position in DMA 3 zones.Although only pointed out a critical point in the present embodiment, can have a plurality of critical points among other embodiment.
Adjoin PRV 44 and be provided with the first pressure survey sensor 6 and flow sensor 7 that is used to measure the flow velocity M that passes PRV that P2 is pressed in an output that is used to measure PRV.Said flow sensor 7 is installed in the upper reaches of PRV to reduce the error that causes owing to turbulent flow.
The signal that sends from sensor 6 and 7 is input to the control module 8 of pilot valve 102; In a preferred embodiment; Said controller based on the measured value of flow velocity and time through below the mode of describing being adjusted the output pressure of PRV, so that the output pressure that can keep the required minimum pressure of critical point to be provided.
The measured value of flow velocity M presses P2 to be transferred to the remote central control station 13 with data processing equipment from control module 8 through wireless communication networks with output.
Be provided with the second pressure survey sensor 10 of the pressure P of the back that is used for measuring critical point place the calibration process of mentioning being used 3 at critical point CP place.It is connected to a data register 11.Said distance sensor remote pressure sensor 10 can be special solid integrated pressure transducer and the register that has embedded statistical analysis software with register 11.Sensor can be interim or permanent installation.The information that is stored on the data recorder can manually be inquired about by the slip-stick artist, and said slip-stick artist is closed through suitable wired or near radio or remote-wireless equipment and linked on the said register.Yet; Preferably, register is connected on the communication unit 12, and said communication unit 12 transmits data through mode or other the suitable wireless communication mode of SMS to central control station 13 every now and then; Said central control station processing pressure data P3 and pressure data P2; And from the flow speed data of control module 8, can the appropriate control parameter being sent to control module, thereby the output pressure of control PRV 44 needs pressure so that the critical point place to be provided.
Fig. 2 illustrates the part of the piping system that comprises (PRV) 44, and said PRV44 is connected in pilot valve 102 under open state, will describe pilot valve 102 in further detail according to Fig. 4 and Fig. 5 below.PRV is in the upstream line 46 that is connected in sustainer water supply line 1 and is connected between the downstream line 48 of measurement zone.Valve element 50 is located on the barrier film 51, and said barrier film 51 forms a side in PRV controller chamber 52.Said valve element is used to control the current through the hole 53 that is connecting upstream line 46 and downstream line 48.Passage 54 connects the inlet 122 of upstream line 46 and pilot valve 102, and through pipeline 58 passages 54 upstream line 46 is connected on the PRV controller chamber 52.Passage 56 connects the outlet 124 and downstream line 48 of pilot valve.Passage 54 is provided with the restrictor 59 at the upper reaches that are positioned at pipeline 58 and pilot valve, and the mode through screw rod 60 is provided with said restrictor.
Engine 62, for example stepper motor or other suitable engine are connected to gear wheel 64 by driving belt 66.Said gear wheel is connected on the adjuster 136, so that cause the rotation of valve element 134 and regulate the water flow section through hole 130 based on the excitation of engine 62.Engine 62 is connected to the output terminal of control module 8.
PRV control chamber 52 pressure inside change between the upper reaches, inlet pressure P1 and downstream, output, pressure P 2 based on the water flow section at the water flow section of pilot valve hole 130 and restrictor 59 places.In Fig. 2, hole 130 is open fully and therefore PRV is open fully.
Flowmeter 7 is positioned at and adjoins PRV 44 places on the upstream line 46.The design pattern of flowmeter 7 can be arbitrarily, for example differential flowmeter, Venturi tube, orifice plate etc.In a preferred embodiment, used axial turbine rotor 67.Axially turbine rotor 67 all has magnet 70 on the top of each blade, and its passage will reed switch be housed or other is for example surveyed the flowmeter sensor unit 68 of the sensing device of hall effect sensor.Said flowmeter sensor unit 68 can calculate the flow by reed switches through any standard method.For example can calculate the umber of pulse in a period of time, perhaps utilize the method for interpulse period, wherein the time interval between consecutive pulses starting point or the pulse end is confirmed.Preferably, when flow velocity is confirmed as when being lower than predefined grade, the flowmeter sensor unit is configured to convert timing pip at interval from the equal umber of pulse of calculating horizontal.
In an embodiment, provide to be used for directly or to confirm that indirectly the device about the information of the position of valve closing element 50, this category information can be used for through estimating the water flow section of PRV, or the size in hole is inferred the flow velocity through reduction valve.So this method provides a kind of substitute mode of use traffic meter 7, this substitute mode also can be omitted.Preferred, however so indirect flow velocity induction mechanism can be used as subsequent use, and it can be surveyed the fault of main flow sensor 7 and/or under the situation that this type of fault takes place, receive.
Fig. 3 illustrates the system among Fig. 2, its mesoporosity 130 close fully and therefore PRV 44 also close fully.When pilot valve is closed, in the PRV control chamber 52 with pilot valve upper chamber 108 in pressure and the upstream line 46 of liquid pressure equate.
The current of pilot valve of flowing through are partly limited by the diameter of passage 54, and said diameter can utilize screw rod 60 adjustment restrictors 59 to be provided with.When partially or even wholly open and system reached equilibrium state when hole 130, the water flow section at hole place had determined PRV control chamber 52 pressure inside with the ratio of the water flow section at restrictor 59 places.
In the use, with respect to tube element 127 changeover valve elements 134, P2 is pressed in the outputs in can adjustable pipe 48 through rotary actuator 136, therefore changes the quantity that hole 130 gets clogged and the effective water flow section of said hole.Therefore, for the lengthwise position of given valve element 134 with respect to tube element 127, effectively water flow section can change.No matter what kind of position in relative rotation is set, all will reaches balance, and set up suitable output and press P2.To increase output to a direction rotation and press P2, and will reduce output pressure to another direction rotation.Shown in the design proposal, turning clockwise of the valve element 134 when overlooking will be opened more hole 130, and will increase output and press P2.Be rotated counterclockwise and block more hole 130, and therefore will reduce output pressure P2.Shown in Fig. 2 (hole is open fully, and PRV is open fully) and Fig. 3 (hole is closed fully, and PRV is closed fully) is two kinds of ultimate limit states.
Shown in Figure 4 is the viewgraph of cross-section of pilot valve 102.Pilot valve comprises big cylinder shape valve 104, and said cylinder shape valve is at top and low side base closed and defined vertical axle 105.Valve internal is separated into top chamber 106, intermediate cavity 108 and chamber, the end 110 and comprises the spring cavity 112 of wind spring 138.Inside cavity is separate with the flexible sealing of barrier film 114,116 and 118 forms, said barrier film be the annular and perpendicular to the axis horizontal.Passage 120 connects chamber 106, top and chamber, the end 110.Intermediate cavity 108 is provided with the inlet 122 that passes valve body, and said inlet 122 is connected to the cavity of above-described reduction valve, and chamber, the end 110 be provided with the outlet 124, said outlet 124 is connected to the outlet side of reduction valve.。Hole 126 is connected to the valve outside with spring cavity.
Cylindrical tube linear element 127 with ring shaped cross-section is completely enclosed within the valve body, and connects three flexible partitions.The axle of tube element 127 extends along the axle 105 of valve body.The bottom of tubular part 127 is connected to barrier film 118 and spring 138, and the bottom of said spring is connected to valve body through tension adjustment screw rod 140.Spring and tension adjustment screw rod extend along axle 105.
The top of the inner chamber 128 of tube element 127 is opened for chamber, top 106 and is provided with two along the relative hole 130 of diametric(al), and said hole 130 is open for intermediate cavity 108.The bottom of the inside 128 of tube element 127 is connected to chamber, the end through opening 132.This design proposal is for equalized pressure and the inside 128 avoiding managing generates hydraulic lock.
Cylinder valve gating element 134 is positioned at tube element 127 closely, extends with the mode of basic sealing and along axle 105.It is installed in an end of tensile regulating element 136 that extends and pass the top of valve body along axle 105.Said regulating element 136 is mounted for about axle 105 rotations.
Fig. 5 illustrates the more detailed view of valve element among Fig. 4 134 and tube element 127.The end face of valve element 134 is provided with two symmetrically arranged inclined-planes 142 around the circumference of valve element, and each inclined-plane tilts to minimum point from peak.When barrier film 118 moved, tube element 127 moved along axle 105.Therefore hole is about valve element 134 axially-movables, and therefore more or less hole is blocked by the inclined-plane.The rotation of regulating parts 136 will drive valve part 134 rotations, and that part that inclined-plane 142 passes the hole extension changes.Because the inclined-plane tilts about circumferencial direction, the area of the hole that gets clogged depends on that the direction of rotation increases or reduces.So therefore, control flowing between opening 122 and 124.
Fig. 6 illustrates the synoptic diagram of control module 8.On the profile, control module 8 has the antenna 20 that is used for wireless telecommunications, comprises the operation user interface for the slip-stick artist of button 39, and the port that is used to connect various sensors.In the internal structure, control module 8 has center processing unit 21 and storer 23, and said storer can comprise some nonvolatile memories.Also be useful on the clock 22 that time and date is provided to CPU21.The time and date data can be upgraded from time server, for example on centre data treatment facility 13 or through other telecommunication link.Electric power supply unit 24 is used to connect external power source.When the said unit that in initial configuration and diagnostic work subsequently, uses is in other position, unlikely settle permanent power source in mounting points.All by primary power 25 supplies, primary power can be any suitable type to main energy, but is preferably lithium.Also has standby power supply 26.Although not shown in the present embodiment, a solar cell can be provided also.Electrochemical capacitance 27 provides the further deposit of electric power, and purpose is in order to provide rapid discharge to shift the subsequent use pilot valve (not shown) that flow to common fixation pressure from the water of main controlled pilot valve 102 with activation gate, for example to use solenoid.This process can be triggered by house dog mechanism, and said house dog mechanism operationally surveys the fault that is taken place in main pilot valve or the control module 8, or primary power 25 and/or standby power supply 26 electric weight are not enough.
Control module 8 has a plurality of I/O connectivity port and communicator.Input end comprises the port 28,29,30 and the port 31 that is used to be connected flow sensor that is used to connect pressure transducer.Pressure input end 1 (28) is connected in P2 pressure transducer 6; Flow velocity input end 31 is connected in PRV flowmeter 7.If pressure input end 2 is provided, pressure input end 2 (29) is connected in the P1 pressure transducer that gets into PRV.Pressure input end 3 (30) can be connected in the pressure transducer that the hydraulic pressure of filtrator was monitored and passed in different being used to; Perhaps said pressure transducer can be used to monitor the pressure of PRV control zone; Perhaps laid in to be used for later application.
Pilot valve output port 32 is connected in engine 62 to be used to regulate pilot valve 102.
Two wireless communication modules comprise: be used for GPRS 34 and the bluetooth 35 that is used for local communication with the telecommunication of central server 13.Also can adopt various wired connections, utilize USB module 33, I2C serial module 37 and RS232 serial module 36.Also have four 20mA wired connections 38.These wired connections can diagnostic purpose, or connects additional sensor, for example precipitation, temperature or optical sensor, or other attached module.Other input/output device for example IrDA, LCD display, keyboard etc. also can be provided, but not illustrate at this.
An alternative mode by control module 8 operations is " Long-distance Control " pressure modulation.In fact, it comprises that control module 8 is according to deviation monitoring that a P3 pressure is set and the output of adjusting P2 pressure.For fear of owing to unknownly between the variation of P2 and the consequent P3 pressure delay caused problem, uses one " living " long-range P3 pressure input and combine the relation between accurate constantly flow velocity of built-in algorithms and the P2-P3.In this type systematic, control module 8 receives the value of P3 pressure directly or through central control equipment 13 from distance sensor remote pressure sensor 10.
Yet; To be control module 8 import the particularly time T of flow rate measurements M and clock 22 outputs based on sensor to the Implementation Modes of standard in the present embodiment; Also have other relevant environmental sensor input, and regulate the output of PRV and press P2 according to the parameter in the storer 23 of being stored in that retrieves by central server 13.In preferred design proposal, control module 8 uses these stored parameters through question blank, comprises flow velocity and time coordinate axle in the question blank and much provides suitable substance P RV output to press the input of P2.Question blank can be three-dimensional or multidimensional, comprises the coordinate axis for light intensity, precipitation sensor, temperature or other home environment factor input value.One of purpose of one of CPU use or more question blank is for computing function, and this function comprises measured value and constant, and the constant here is meant institute's stored parameters.
Said parameter is related by the control program of operation on the processor 21; Said processor is confirmed P2 pressure (the further constraint of consideration probably of expectation; For example the physical extent of PRV valve part, P1 pressure or pressure become damping factor; More details see below), and pass through pilot valve output port 32 and send appropriate signals to pilot valve engine 62.P2 pressure input port 28 can provide the feedback of this adjustment process.The P1 pressure input measurement of port 29 can be used in avoids control module 8 to attempt to obtain physically impossible P2 pressure greater than P1 usually.
For the response speed of the variation of the variation of flow velocity and related P2 be by amortization variable control with rate of pressure change among the restriction DMA.
The stored parameters that is described below generates and deposits in the storer 23 of control module 8.
Particularly at the initial setting up state, the slip-stick artist can be based on DMA model, historical flow velocity, manually confirm parameter with the distance and the difference in height of critical point, and the slip-stick artist for example uses PC or SMS interface to be loaded into control module 8 to these parameters.Can use simple rule to estimate to concern variable.The slip-stick artist can use appropriate software to help confirm parameter.
The manual setting of parameter is adjustable, and through for example: directly user interface is through the LCD display menu on controller; Mobile text (SMS) information of sending by central control unit that receives; Through the for example order of GPRS transmission of mobile data server; Perhaps the PC interface is through wired serial communication (RS232), infrared serial communication (IrDA) interface or have the optional near radio interface of user friendly graphic user interface (GUI).
Conventional usage, and alternatively even at initial installation phase, the renewal of parameter or its increase is transmitted through central server 13 every now and then.Preferably, communication is initiated by control module 8.
Preferably, as previously mentioned, the form of one of parameter employing or more question blanks that disperse more.Yet they can be described or with continuous curve of parametric description or multi-dimensional surface, or with the relational expression model of parametric description some other, for example neural network.
Although in certain embodiments, control module 8 can generate proper parameters by raw data, and in the present invention, main data analysis is carried out on central server 13.Usually, the initial training data will be by being gathered in the time in a week or two weeks, but will obtain periodically presentation, and this time period possibly need longer, and the time period of perhaps collecting several different training data groups is elongated.The measured value of P2 and flow velocity M is recorded in the whole data recorder in the control module 8, is transferred to central equipment 13 then every now and then.The pressure P 3 of critical point is recorded on the teledata register 11 related with the distance sensor sensor that is positioned at critical point 10.Remote register is synchronized with control module 8 directly or indirectly all through before data collection cycle, being synchronized with the clock that is positioned at central equipment 13, has clock synchronized to guarantee two unit.After the data collection cycle, teledata register 11 connects (RS232 or IrDA) or SMS or other method through for example direct serial the P3 data is downloaded to central server 13.The relation that central server 13 is analyzed between P2-P3 and different flow rate M and the time T; Also consider the factor that other possibly is correlated with alternatively; For example weather condition, fixture (sports fixtures), service water information etc.; And utilize recurrence or other suitable analytical algorithm to generate parameter value, to set up discrete or continuous best curve, best multi-dimensional surface figure or other suitable relational expression model.Can utilize the learning method of supervision; For example, neural network, Bayes etc.Like this, the relative importance in input factor such as fixture, weather, season etc. just do not need to suppose in advance, and can suitably be learnt and balance obtains by the software of central server 13.
If software is not sure of a suitable relational expression, it is alarm operation person, and said operator can check data and hand drawn curve or replace with other relation curve.
Typical relation curve can be continuous or discrete for input variable (flow velocity, time etc.) in the central server 13.Control module 8 can directly be loaded on although be used for fully describing the parameter of relation curve continuous, that possibly be multidimensional; In the present embodiment; The simple question blank that central server 13 generates, flow velocity, time etc. suitably are divided into discrete interval in said question blank.Of preamble, this question blank is loaded on the control module 8 and uses.This table can increase along with the time, also can periodically update because central server can be according to the weather forecast in for example following 24 hours or a following week, or as the factors such as fixture in future of golf league matches, revise the question blank of simplification.
Be interrupted if the parameter communication that central equipment 13 offers control module 8 had before updated parameters is loaded at any time, will have enough parameters to be used for suitably regulating output pressure as on ordinary days, in specific time such as weekend and so in a period of time.
Central server 13 can be controlled some independently DMA that have PRV separately respectively.Have certain similarity between the DMA, central server 13 preferably uses from the degree of accuracy of data definite parameter to be improved to different DMA of a DMA acquisition.Only by way of example, can confirm to be used in time than 1 year at sunshine confirming that the some months of the best relation between flow velocity M, time T and the P2-P3 has more significant effect by the data about first DMA of record; This conclusion can be used in the parameter that is superior to the 2nd DMA, said the 2nd DMA even possibly not have flash spotter.Like this, best use is a training data.
Control module 8 among the special arbitrarily DMA possibly have such equipment can manually replace existing relational expression temporarily; The parameter that is about to existing automatic generation or manually is provided with replaces with the parameter of new interim setting, also should be able to return virgin state simultaneously.
Optional flow velocity supervisory system can be used for triggering urgent P2 amount and substitute.Urgent P2 pressure is set to triggered by fixing flow velocity.Trigger flow velocity if flow velocity M surpasses, control module 8 will be controlled pilot valve 102, increase P2 to urgent value to cause PRV.This function will be provided for the high pressure supply of DMA, the situation of fire demand water demand for example when being predefined for low pressure period, occur.
All control methods are characteristic: SMS, RS232, IrDA and (optional) wireless output with following report function; Report the detailed design of all variablees; Report maximum, minimum and the mean value of detailed P1, P2, (if P3 measures), flow velocity (minimum and maximal value and date sign indicating number together write down); The SMS warning function gives a warning when arbitrary parameter exceeds fence coverage or relatively poor automation curve coupling; For example, data recorder is through the RS232 dump.
Logging interval is adjustable, for example, and 10 seconds, 30 seconds, 1 minute, 5 minutes, 15 minutes or one hour.In the present embodiment, preferably be set to 15 minutes at interval.
Control module 8 can comprise the power conservation function.Like this, control module can only be adjusted PRV when the P2 pressure measuring value surpasses the permissible variation scope.Said deviation also is adjustable.Increase permissible variation and will cause P2 to respond more out of true, but will need adjustment still less therefore to prolong power source life.When system relies on an optional external power source to turn round, reduce the maximum allowable offset value and can access more accurate P2 output characteristics.
In the PRV range of control, the information that relates to the pressure in the PRV control space can be used to infer opening or the closed degree of PRV, or with in certain embodiments, estimates that based on inlet pressure P1 the PRV top hole pressure is with control space pressure and flow velocity M.Control module 8 can be surveyed the fault of P2 outlet pressure sensor and/or not use the operation of P2 pressure transducer.Similarly, relate to the information of controlling space pressure and can use in certain embodiments, from the information that relates to inlet pressure P1, top hole pressure P2 and control space pressure, estimate flow velocity M through PRV.Control module 8 in can the detection flows speed sensors fault and/or do not use the operation of flow sensor.
Use through power supply is provided with control module, therefore, per hour will once adjust roughly, together with adjustment more frequent in the one-period (approximately every at a distance from 15 minutes).The number of times of adjustment every day is estimated greatly about 32 to 36 times.Alternatively, through limiting the high reps that is adjusted in per 24 hours, further realize power conservation.In case be provided with the adjustment number of times, PRV will be provided with (parameter setting) output pressure of an acquiescence.This function need to be used to power source life to surpass the situation in setting-up time cycle.
Can a chart be provided to the operator, so that control module is set and estimates power source life.After new power pack was installed, the sum of adjustment can be used and be used to write down to the permanent storage function.
Substantially, control module preferably is designed to can electrical source consumption be reduced to minimum, can realize through optimal design and up-to-date low energy consumption technologies.
Control module can the monitoring power supply life-span (power source life that comprises any outside SMS/PSTN or other communication unit) and when electric weight is not enough, give a warning (as through SMS information) with the warning central control system.
Control module 8 comprises the four corner of local and remote pressure modulation capability, improves performance, simplifies setting and reduces the function of safeguarding in conjunction with some.It is reliable, solid, general with wieldy that controller is designed and manufactured to.Control module is a multi-functional controller and data recorder.
The slip-stick artist just can use software to realize following function through using notebook computer or PDA:
Test query table function under various simulated scenario;
Data recorder on the controller is set;
Data recorder on the long-range P3 pressure recorder is set;
Download or reading and recording device data;
To draw and the demonstration of tabulation form;
Set up point value, maximum or minimum value or the like;
Calibration record device/controller;
Writing speed is set;
Assignment record device ID;
The adjustment clock;
Dispose all models, input and output;
The adjustment parameter;
Communication is set.
As noted above, control module can be controlled PRV 44 and use the equilibrium point pilot valve; Control is to be realized by the control of motor to the position of rotation of Control Shaft.Yet in one embodiment, PRV possibly have direct solenoid valve.In such design proposal, control module can be connected to two solenoid valve, and one of them can guarantee that the chamber, top of PRV is a P1 pressure, and another can guarantee that the chamber, top of PRV is a P2 pressure.The 3rd optional solenoid valve can guarantee to push up chamber etc. and be pressed on atmospheric pressure, or optional Venturi tube.
Substantially, the communication between the each several part in the various embodiments of the present invention can be passed through for example serial line interface (RS232), USB (USB), Firewire (TM), LAN or WAN, optical fiber connection etc. of wired connection; Technology such as short-distance wireless communication such as infrared (IrDA), inductive coupling, bluetooth, Wi-Fi; Or telecommunication, utilize suitable radio frequency and agreement, for example utilize the cellular mobile communication network etc. of SMS infotech.Communication between each assembly for example can utilize, and the network of the Internet passes through control center etc.Certain assembly possibly be configured to the webserver, thereby has just become simply with being connected with data access of this assembly.
Generally speaking, preferred embodiment of the present invention is the controller that pilot valve provides the output pressure of a reduction valve that is used to regulate supply water to Water District.In order to reduce output pressure the minimum required pressure of regional critical point place is provided simultaneously, controller is based on the flow rate regulation output pressure.Controller comprises a clock, and the relation between required output pressure and the flow rate measurements is based on the time.The parameter that defines said relation offers controller from remote data processing system, and said remote data processing system is used to analyze flow velocity and the output pressure data that transmitted by controller, and the pressure data of critical point place distance sensor.Compartment of terrain, controller are set up and the wireless connections of the remote system data with transmission log, and receive and contain the parameter of a segment length in the interlude of conversational communication.

Claims (15)

1. one kind is used to regulate the system of accommodating fluid to the output pressure of the reduction valve in the zone of using fluid, and said system comprises controller and remote data processing system, it is characterized in that, said controller comprises:
-control output end, said control output end are used to provide signal to regulate the output pressure of reduction valve;
-data storage device, said data storage device stores is represented the parameter of the required output pressure of reduction valve, to set up required minimum fluid pressure according to measured value in the critical point in the zone of using fluid;
-treating apparatus; Said treating apparatus is disposed for handling the representative data and the (ii) said stored parameters of (i) said measured value; Make said control output end provide signal causing the adjustment reduction valve, thereby the required output pressure corresponding to said measured value is provided;
-output pressure input end, said output pressure input end are used to receive the output pressure signal from pressure sensor output;
-be suitable for providing device from the representative data of the output pressure of reduction valve;
-pen recorder, said pen recorder is through the time stamp data record data, and said data comprise the representative data of the output pressure of said reduction valve; And
-communication module, said controller are configured to utilize said communication module compartment of terrain that record data are sent to said remote data processing system, and receive the supplemental characteristic about said parameter from said remote data processing system;
And wherein said remote data processing system is configured to:
-receive record data from said controller, and compartment of terrain transmission parameter to said controller;
-receiving critical-point pressure data from the critical-point pressure sensor that adjoins critical point, said critical-point pressure data comprise time stamp data; And
-utilizing from the record data of said controller reception and the critical-point pressure data that receive from said critical-point pressure sensor, calculating will be transferred into the supplemental characteristic of said controller.
2. system according to claim 1 is characterized in that said controller comprises clock, and said measured value is the time.
3. system according to claim 1 is characterized in that, is provided with to be used to provide the device of representative data of flow velocity of said reduction valve of flowing through, and said measured value is a flow velocity, and the representative data of the said flow velocity of said recording device records.
4. system according to claim 3; It is characterized in that; Said parameter is also represented the required output pressure based on second measured value, and said controller comprises clock, and said second measured value is the time; The said signal that said control output end provides will cause that said reduction valve is adjusted to provide the required output pressure corresponding to said flow velocity and time, and the representative data of the said flow velocity of said recording device records.
5. system according to claim 1 is characterized in that, the control output end of said controller is connected with the pilot valve that is used for reduction valve.
6. system according to claim 5 is characterized in that, is provided with subsequent use pilot valve, and this is provided under the situation that pilot valve or controller break down, activating said subsequent use pilot valve.
7. system according to claim 1; It is characterized in that; Said remote data processing system further is configured to when said remote data processing system calculating will be transferred to the supplemental characteristic of said controller, utilize the data relevant with at least one environmental factor.
8. system according to claim 7 is characterized in that, said environmental factor comprises weather forecast or uses the various variations of the daily use fluid mode of fluid restricted or prediction.
9. system according to claim 1 is characterized in that, said parameter is used in the function of handling through the treating apparatus of said controller.
10. system according to claim 1 is characterized in that, said parameter is with the form of the question blank that used by the treating apparatus of said controller.
11. system according to claim 4; It is characterized in that; Said remote data processing system is configured to: the supplemental characteristic that transfers to said controller is contained cycle a period of time, during this period of time greater than the interval of the data communication between controller and the remote data processing system.
12. a method of utilizing controller and remote data processing system to regulate accommodating fluid to the output pressure of the reduction valve in the zone of using fluid, wherein, said method comprises:
-by the control output end of controller signal is provided, to regulate the output pressure of reduction valve;
-parameter of the required output pressure of reduction valve is represented in storage in the data storage device of controller, to set up required minimum fluid pressure according to measured value in the critical point in the zone of using fluid;
-utilize the treating apparatus of controller to handle the representative data and the (ii) said stored parameters of (i) said measured value; So that signal is provided by said control output end; Said signal is in order to causing that reduction valve is adjusted, thereby the required output pressure corresponding to said measured value is provided;
-receive output pressure signal at the output pressure input end of controller from pressure sensor output; And
-by controller the device from the representative data of the output pressure of reduction valve is provided;
-utilize the pen recorder of controller to pass through the representative data that time stamp data writes down the output pressure of reduction valve; And
-utilize the communication module compartment of terrain of controller that record data are sent to said remote data processing system and receive the supplemental characteristic about said parameter from said remote data processing system;
-receive record data in remote data processing system from said controller;
-transmit said supplemental characteristic from the remote data processing system compartment of terrain to said controller;
-receiving critical-point pressure data in remote data processing system from the critical-point pressure sensor that adjoins critical point, said critical-point pressure data comprise time stamp data; And
-utilize from the record data of said controller reception and the critical-point pressure data that receive from said critical-point pressure sensor, calculate the supplemental characteristic that will be transferred into said controller in remote data processing system.
13. method according to claim 12 is characterized in that, the control output end of said controller is connected to the pilot valve that is used for said reduction valve, and said fluid is a water.
14. one kind is used to regulate the controller of accommodating fluid to the output pressure of the reduction valve in the zone of using fluid, said controller has:
-control output end is used to provide signal to regulate the output pressure of said reduction valve;
-data storage device, said data storage device stores is represented the parameter of the required output pressure of said reduction valve, to set up required minimum fluid pressure according to measured value in the critical point in the zone of using fluid;
-treating apparatus; Said treating apparatus is mixed with representative data and the (ii) said stored parameters that is used for handling (i) said measured value; Make said control output end provide signal causing the adjustment reduction valve, thereby the required output pressure corresponding to said measured value is provided;
-output pressure input end, said output pressure input end are used to receive the output pressure signal from pressure sensor output, and are suitable for providing the device from the representative data of the output pressure of reduction valve;
-pen recorder, said pen recorder is through the time stamp data record data, and said data comprise the representative data of the output pressure of reduction valve; And
-communication module; Said controller is configured to utilize said communication module compartment of terrain that record data are transferred to said remote data processing system; And receive supplemental characteristic, and said supplemental characteristic is stored in the said data storage device about said parameter from said remote data processing system.
15. controller according to claim 14, its combination is used for the pilot valve of said reduction valve, it is characterized in that, the control output end of said controller is connected to pilot valve.
CN2008800097283A 2007-01-24 2008-01-24 Controller and control system for a pressure reducing valve Active CN101641654B (en)

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GB0701352.7 2007-01-24
GB0701352A GB0701352D0 (en) 2007-01-24 2007-01-24 Liquid pressure control
GB0705538.7 2007-03-22
GB0705538A GB0705538D0 (en) 2007-03-22 2007-03-22 Pilot valve for a pressure reducing valve
GB0722343A GB0722343D0 (en) 2007-11-14 2007-11-14 Pilot vale and control system for a pressure reducing valve
GB0722343.1 2007-11-14
PCT/GB2008/000265 WO2008090359A2 (en) 2007-01-24 2008-01-24 Controller and control system for a pressure reducing valve

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