CN109404603A - A kind of method and apparatus of the On-line Fault monitoring of pneumatic control valve - Google Patents
A kind of method and apparatus of the On-line Fault monitoring of pneumatic control valve Download PDFInfo
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- CN109404603A CN109404603A CN201710713420.8A CN201710713420A CN109404603A CN 109404603 A CN109404603 A CN 109404603A CN 201710713420 A CN201710713420 A CN 201710713420A CN 109404603 A CN109404603 A CN 109404603A
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- 230000003068 static Effects 0.000 claims description 5
- 238000003745 diagnosis Methods 0.000 abstract description 2
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- 238000005259 measurement Methods 0.000 description 14
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- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 230000001702 transmitter Effects 0.000 description 3
- XCCTYIAWTASOJW-XVFCMESISA-N Uridine-5'-Diphosphate Chemical compound O[C@@H]1[C@H](O)[C@@H](COP(O)(=O)OP(O)(O)=O)O[C@H]1N1C(=O)NC(=O)C=C1 XCCTYIAWTASOJW-XVFCMESISA-N 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
Abstract
A kind of method and apparatus of the On-line Fault monitoring of pneumatic control valve, for monitoring the malfunction of pneumatic control valve on-line.The result being compared according to the response data for turning on or off monitoring valve stroke in movement in pneumatic control valve door with the tentation data that fault-free pneumatic control valve detects, judge the malfunction of surveyed pneumatic control valve door, thus, realize the on-line fault diagnosis of nuclear power station pneumatic control valve, and then maintenance personal can handle the failure of valve in time, the normal operation without influencing unit.The present invention has its significance to the safe operation of nuclear power station.
Description
Technical field
The present invention relates to nuclear power generating equipment technical fields, and in particular to a kind of method of the On-line Fault monitoring of pneumatic control valve
And device.
Background technique
In the various equipment of nuclear power station, pneumatic control valve is more using type, distribution extensively, and because of its good regulation performance,
Often play a part of flow adjusting in certain important systems.In equipment running process, it is possible that the adjusting wave of valve
Excessive, frequent adjusting is moved to cause regulating device loosening, pneumatic head gas leakage that valve is caused to open by mistake or accidentally close, transport in unit varying duty
In row, the regulation performance of valve does not catch up with the various faults such as the state of unit.Due to during unit is run equipment be cannot be every
From, instrument control personnel can only be monitored and handle to the failure of pneumatic control valve in the case where valve is online, but any
The monitoring and processing of failure are likely to the malfunction for causing valve bigger, that will likely directly result in unit chaser or cause more
Big nuclear safety accident.
Summary of the invention
The application provides a kind of method and apparatus of the On-line Fault monitoring of pneumatic control valve, is adjusted with judgement on site is pneumatic
Whether section valve breaks down, and the failure of pneumatic control valve is checked out convenient for scene.
According in a first aspect, the method that the On-line Fault for providing a kind of pneumatic control valve in a kind of embodiment monitors, described
Method includes:
All-in-one machine, which is issued, gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off；
The all-in-one machine receives the response data for first instruction that the observing and controlling cabinet is sent, the number of responses
According to including: the first response data for indicating the valve stroke of the air pressure regulator；
The all-in-one machine according to the comparison result of first response data tentation data corresponding with the valve stroke,
Determine the pneumatic control valve whether failure；
The valve stroke refers to that the air pressure regulator is moved to another position from a position.
According to second aspect, provide a kind of On-line Fault monitoring device of pneumatic control valve in a kind of embodiment, it is described therefore
Hindering on-Line Monitor Device includes:
Communication interface unit gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off for issuing, with
And the response data for first instruction that the observing and controlling cabinet is sent is received, the response data includes: described in expression
First response data of the valve stroke of air pressure regulator；
Memory, for storing tentation data corresponding to the valve stroke；
Processor, for according to first response data compared with the corresponding tentation data of the valve stroke knot
Fruit, determine the pneumatic control valve whether failure；
The valve stroke refers to that the air pressure regulator is moved to another position from a position.
The On-line Fault monitoring method and device of pneumatic control valve according to above-described embodiment, all-in-one machine are pneumatic by control
Regulating valve turns on or off, to obtain the response data of pneumatic control valve, judges pneumatic control valve using response data
Malfunction.
Detailed description of the invention
Fig. 1 is the flow chart of the On-line Fault monitoring method of pneumatic control valve of the invention；
Fig. 2 is the connection figure in kind of second of way of example of the invention；
Fig. 3 is that the hardware of second of way of example of the invention forms figure；
Fig. 4 is the component infrastructure figure of second of way of example of the invention；
Fig. 5 is the part structure diagram of second of way of example of the invention；
Fig. 6 is the component connection figure of second of way of example of the invention；
Fig. 7 is the software systems parameter configuration interface figure of second of way of example of the invention；
Fig. 8 is the software systems master control interface figure of way of example in of the invention second；
Fig. 9 is the curve graph of the third way of example of the invention；
Figure 10 is the curve graph of the third way of example of the invention；
Figure 11 is the curve graph of the 4th kind of way of example of the invention；
Figure 12 is the curve graph of the 5th kind of way of example of the invention；
Figure 13 is the curve graph of the 6th kind of way of example of the invention.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can obviously recognize, part of feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant it is some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
Relevant operation can be completely understood according to the general technology knowledge of description and this field in specification.
It is formed respectively in addition, feature described in this description, operation or feature can combine in any suitable way
Kind embodiment.Meanwhile each step in method description or movement can also can be aobvious and easy according to those skilled in the art institute
The mode carry out sequence exchange or adjustment seen.Therefore, the various sequences in the description and the appended drawings are intended merely to clearly describe a certain
A embodiment is not meant to be necessary sequence, and wherein some sequentially must comply with unless otherwise indicated.
It is herein component institute serialization number itself, such as: " first ", " second " etc. are only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).
Valve stroke refers to that the air pressure regulator is moved to another position from a position.
When Dead Zone indicates the input signal input of the direction of travel for changing the pneumatic control valve, it cannot make
The range of the changed input signal of the direction of travel of the air pressure regulator.
Valve resolution refers to that being used to generate one when input does not change direction can detect required for output variation
The smallest possible input variation.Valve resolution is typically represented as the input range of percentage.
Dynamic fc-specific test FC refers to characteristic or pneumatic control valve movement under the pneumatic control valve working condition
Characteristic in the process.
Valve dead point sweep test refers to the static relation between valve stroke and input signal, so also referred to as static special
Sign, the lag of blind area and pneumatic control valve including pneumatic control valve.
Spline smoothing test refers to variation response of the pneumatic control valve door under step control signal.
Executing agency refers to that one provides power or moves the pneumatic device for removing to open or close valve.Executing agency's component packet
It includes all related accessories and realizes the operation opened or closed to valve as a complete operating unit.
In embodiments of the present invention, response data is obtained by monitoring air pressure regulator valve stroke, passes through response data
It is compared with the tentation data of fault-free pneumatic control valve valve stroke, therefore, it is determined that failsafe valve state.
Embodiment one:
Referring to FIG. 1, Fig. 1 is a kind of flow chart of the On-line Fault monitoring method of pneumatic control valve.
Step S201: all-in-one machine, which is issued, gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off.
Step S202: observing and controlling cabinet executes the first instruction, and obtains the first response data of air pressure adjustment stroke of valve.
Step S203: response data is transferred to all-in-one machine by observing and controlling cabinet.
Step S204: all-in-one machine receives the first response data and air pressure regulator valve stroke that observing and controlling cabinet is transmitted back to
Corresponding tentation data is compared.
The S205: the first response data of step is identical as tentation data then to determine valve fault-free, the first data and predetermined number
Then determine that valve is faulty according to not identical.
The present embodiment passes through to the response data and fault-free valve stroke data measured in pneumatic control valve valve stroke
It is compared, to realize the judgement to pneumatic control valve malfunction.
Embodiment two:
Referring to FIG. 2, Fig. 2 is a kind of On-line Fault monitoring device material object connection figure of pneumatic control valve.
The present apparatus monitors pneumatic control valve by stroke sensor；E/P (current to pneumatic converter) is monitored by current probe；
Also monitoring accelerator, locator, pressure reducing valve and filter etc. simultaneously
Referring to FIG. 3, Fig. 3 is a kind of On-line Fault monitoring device hardware composition figure of pneumatic control valve.
Data acquisition module is for acquiring supply gas pressure, E/P output pressure (current to pneumatic converter output pressure), locator
Output pressure, actuator pressure, valve location, the acquisition of angle run-length data.
Two-wire system power output is for providing power supply to data acquisition module.
Driving signal is exported for exporting E/P input signal (current to pneumatic converter input signal) and auxiliary signal.
Measurement main body is used to control data acquisition module, two-wire system power output and driving signal output.
Portable integral machine can be exported in a manner of expanding printing machine and expanded scope.
Portable integral machine carries out data communication with measurement main body by way of Ethernet.
Referring to FIG. 4, Fig. 4 is the internal structure chart of measurement and control unit.
The measurement and control unit of the present apparatus is realized using ComPactRIO (embedded Webserver), mainly to on-site signal and biography
Sensor electric signal is acquired.Wherein AC DC power module for realizing to ComPactRIO and two-wire system sensor supply
Electricity.Since the present apparatus needs multiple baroceptors and small in size, so baroceptor is integrated in measurement and control unit, such as
The air pressure signal of collection in worksite is converted into electric signal by No. 8 pressure sensors in shown in Fig. 5, main realize.
ComPactRIO includes FPGA (field programmable gate array) cabinet, real-time controller and data collecting card.Wherein
It at most can be inserted into 8 pieces of data collecting cards in FPGA cabinet, realize that channel is isolated with channel spacing discrete channel with scene, Jin Ershi
Existing non-intrusion type inline diagnosis and evaluation function.
Following table is the model and parameter of 8 pieces of data collecting cards:
The sensor that the present apparatus uses includes pressure sensor and stroke sensor.
Pressure sensor is integrated in portable observing and controlling cabinet, including two kind of 2 journey of 0~100PSI and 0~200PSI, and scene is surveyed
It is realized and is connected by hose and pneumatic control valve when amount.The present apparatus is using two kinds of models of EC007BS2PG and EC010BS2PG
Baroceptor.
Stroke sensor includes that straight trip sensor and angle stroke sensor, Direct Travel sensor measurement Direct Travel are pneumatically adjusted
The Direct Travel of valve, angle stroke sensor measure the angle stroke of angle stroke pneumatic regulating valve.Present apparatus Direct Travel sensor uses
The Direct Travel sensor of PT8420 model is connected with testee by the stainless steel core of a high flexibility, linear running is turned
Change rotary motion into.Its maximum range be 60inch, export for 4~20mA two-wire system output, measurement accuracy be full scale ±
0.15%.It is measured, is realized to pneumatic control valve by the spool position that professional tool is fixed on Direct Travel pneumatic control valve
The measurement of Direct Travel.Present apparatus angle stroke sensor uses the rotary displacement transducer of PR65 model, passes through viscose block or installation
Form be connected with valve, valve rod rotation when record rotation angle, range be 360 degree, the linearity be ± 0.05%,
Realize the angle stroke measurment of diagonal stroke pneumatic control valve.
The present apparatus reduces supply valve positioner and the scene origin pressure of other control equipment using supply gas pressure adjuster
Power, the bleed pressure for generally going through decompression have 20,30 and 60psig, and pressure regulator is mounted on locator or uses in which can integrate formula
Bolt is mounted in the executing agency of pneumatic control valve.
The current to pneumatic converter that the present apparatus uses receives a direct-flow input signal issued by observing and controlling cabinet, and uses one
Received direct current signal is converted into a proportional pneumatic output by a torque-motor, nozzle flapper and pneumatic amplifier to be believed
Number.Current to pneumatic converter can be directly installed on valve, and do not needed other tolerance enhancer or locator and can just be made
Valve working.
As shown in figure 5, being the locator structure figure of pneumatic control valve, mainly by receiving current to pneumatic converter output
Pneumatic output signal controls valve to corresponding aperture.The present apparatus is changed by the size to current to pneumatic converter input current
Become the size of output pressure.The bellows expansion of locator is mobile to generate a proportional input signal, reflects spool position.
Compared with the torque of input signal, the final valve rod that changes moves up and down the spool position that spool position is reflected by mechanical device.
By to input current control and stroke sensor value of feedback, the achievable zero point adjustment to valve positioner, range adjustment.
Need to measure output or the valve bellows pressure of BOOSTER for the valve present apparatus with BOOSTER.By soft
Pipe is connected with metal joint, and air pressure signal is converted into electric signal by air pressure transmitter, realizes output or the valve of BOOSTER
The acquisition of door bellows pressure.
When the present apparatus tests pneumatic control valve accessory and circuit operation, other signals can be recorded simultaneously, other signals include
The signals such as process variable, limit switch and the position transmitter of transmitter.Or by monitoring the valve control issued by control room
Signal processed realizes the record to other signals.
As shown in fig. 6, the connection figure between the present apparatus and air bladder formula regulating valve.
The present apparatus has the function of powerful observing and controlling, and in addition to serial ports and network interface, primary interface includes stroke sensor input
Channel, I/P electric current/pressure output channel, electric current input channel, ± 10VDC voltage output channel, four road 0-100PSIG pressure
Input channel, four road 0-200PSIG pressure input channels.Pneumatic tune can be accurately detected in the case where not dismantling and disintegrating
Save the situation of valve and attachment.
The present apparatus places Portable acquiring system and all-in-one machine using portable interface cabinet, using unitary design,
And included idler wheel.And it is furnished with carrying handle, facilitate and is moved according to physical location.There is cover on cabinet, opens when in use
Cover can quickly carry out sensor and the connection of corresponding cable, and for electrical connection, realize measurement.In addition there are an auxiliary machines
Case, the dedicated liner of interior customization.It is mainly used to place sensor, fastening means, metal joint, interface cable, hose etc..This
Device by measurement control pressure and stroke sensor parameter, obtain valve close when valve seat sealing force, frictional force and
The parameters such as spring setting value can determine whether the sealing performance of valve according to these parameters and real-time curve.By measuring different condition
Lower valve can obtain the control characteristic index of the valve accessories such as valve, locator and I/P to the action response of control signal；
Each module response characteristic of valve and response error situation can be investigated by the Dynamic Signal for inputting different.
As shown in fig. 7, being present apparatus software systems valve parameter configuration interface, model, the valve of valve are primarily input
Intrinsic parameter, sensor model number selection and output signal range ability etc..Wherein intrinsic parameter is sensed for carrying out parameter calculating
Device type selecting and output signal range ability are used for field signal acquisition and driving, and other information is used for printing reports.
As shown in figure 8, being present apparatus software systems master control interface, as long as realizing that ginseng configuration, realtime curve, history are bent
The functions such as line is shown, driving signal exports, data are analyzed and data upload.
Data whole process stores during the present apparatus monitors pneumatic control valve door, and data memory format is EXCEL and tdms two
Kind format, filename are named with the time, are saved file and are divided into after raw data file and processing two kinds of data file.Number after processing
According to the data etc. after finger range swithching.Software is provided with save button, starts to save data when clicking save button.Software setting
There is stop button, clicks stop button and stop saving data.Each file was needed comprising serial number and time, and filename is ordered with the time
Name.It saves and opens up two new files when carrying out simultaneously, respectively data after initial data and processing.
The present apparatus can provide online and offline two kinds of checking modes to valve, and by check results with graphic software platform.It should
Curve is indicated in the form of the input range of the output range of percentage comparison percentage.Specifically include 6 kinds of standard testing choosings
, the performance of control valve can be checked comprehensively.
The present apparatus can carry out automatically report printing to test result after testing, if after detecting failure, beaten automatically
Print failure report.Report content includes that monitoring result (qualified or failure), parameter be overproof and the information such as performance parameter.
Following table is the output accuracy that the present apparatus controls signal:
| Range ability | Number of channels | Measurement accuracy | Resolution ratio |
| 0~20mA | 4 tunnels | ±0.01mA | 16 bit resolutions |
| ±10V | 4 tunnels | 0.001V | 16 bit resolutions |
Following table is the input precision list of present apparatus stroke:
| Range ability | Number of channels | Overall precision | Resolution ratio |
| 0~60inch | 2 tunnels | ± 0.15% | 0.001inch |
| 0~360 degree | 2 tunnels | ± 0.25 degree | 0.0075 degree |
Following table is the precision list of present apparatus analog input channel:
| Range ability | Number of channels | Overall precision |
| 0~100pisg | 4 tunnels | ± 0.5psig+0.2% |
| 0200pisg | 4 tunnels | ± 1psig+0.2% |
| ±10V | 4 tunnels | 0.1%V |
Following table is the performance indicator of the present apparatus:
| Test subject | Pneumatic control valve door |
| Test item | Supply gas pressure, electric appliance converter output pressure, locator output pressure, actuator pressure, valve position |
| Output signal | 4~2mA standard current signal, ± 10V standard voltage signal |
| Sample rate | Sampling rate for each channel >=50Ks/S |
| Isolation characteristic | Channel spacing from |
| Test interface | Hose, metal joint, cable etc. can be customized according to customer demand |
| Operating system | Host computer Win7, slave computer RealTime real time operating system |
| Operating temperature | - 40~70 degree |
| Measure main body weight | Amount≤10Kg |
| Measure main body ruler | Very little 300mm ╳ 250mm ╳ 120mm |
| Communication pattern | Ethernet, wireless network |
Following table is the standard configuration of the present apparatus:
Embodiment three
As shown in figure 9, being the process Dead Zone curve of pneumatic control valve door.It, cannot when input signal changes direction
So that tested process variable (PV) generates the range or width of controller output (CO) value of variation.When a load disturbance occurs
When, process variable can deviate set point.There are many dead zone Producing reason, wherein mostly because of the frictional force of pneumatic control valve, vacillate, revolve
The torsion of rotary valve valve shaft and the dead zone of amplifier cause.
It as shown in Figure 10, is the dead zone test curve of the pneumatic control valve door of monitoring.By inputting continually changing small rank
Jump current signal, changes pneumatic control valve door direction, monitoring valve opening is, it can be achieved that prison to valve resolution and Dead Zone
It surveys.
Frictional force is a main cause in regulating valve dead zone.Rotary valve is for because of frictional force caused by high seat load
It is very sensitive.It is to obtain and close necessary to grade using high seat load but for sealed pneumatic operated valve.Due to
High frictional force and low actuation performance rigidity, valve shaft can reverse, and movement can not be passed to control element.Wherein filler friction
Power is the main source of the frictional force of straight travel regulating valve.In the valve of these types, the frictional force measured may
There is very big difference with valve version and the difference of filling-material structure.
The type of executing agency also has the frictional force of control valve group the influence of essence.Spring diaphragm actuator
Smaller frictional force is generated to control valve group than piston actuator, another advantage of spring diaphragm actuator is it
Frictional force is more constant, will not change with time.The frictional force of piston actuator can be with guide surface and O-ring
Abrasion, lubricant layer loss and elastomer performance rate decline and dramatically increase.
Example IV:
It as shown in figure 11, is the dynamic characteristic of the pneumatic control valve of monitoring.Dynamic scan test can react valve
Overall characteristic, input for electricity gas converter input signal, export as valve stroke.For new valve member dynamic scan
Test can establish performance reference, thus can be with the test and comparison that then carries out.Any curve decay may all be derived from all
The problem of as worn or damaging valve and attachment instrument.There is deformation to be at curve both ends because mechanical on standard-sized sheet or closed positions
What contact generated.If there may be problems for the unsmooth indication of curve, and then determine failsafe valve by curve.
Embodiment five:
It as shown in figure 12, is the dead point test curve of the pneumatic control valve of monitoring.Every part in dead point scanning analysis structure
Lag and blind area and their synergistic effect.The test applies control signal by fixed step size and (is increased to by Lower Range
The upper limit is dropping back to lower limit), valve stroke is recorded in the process.
Embodiment six:
It as shown in figure 13, is the step test curve of the pneumatic control valve of monitoring.Spline smoothing test is used for test valve
Variation response under step control signal.It is dynamically reflect for detecting travel speed and valve.By with switch time compare come
Whether qualified monitor pneumatic control valve.
Executing agency's characteristic curve can embody the mechanical property of valve, using stroke sensor as abscissa, die head pressure
Power is ordinate, in the characteristic curve of executing agency, can calculate the frictional force of valve, elastic slope, valve stroke, take a seat
The parameters such as power and BenchSet.The calculating for power of taking a seat be based on closed positions the variation of air pressure obtain, in curve
Valve head contacts on the position of valve seat.
The frictional force of pneumatic control valve door can be calculated according to executing agency's characteristic curve, spring slope, valve stroke, fallen
The seat parameters such as power and BenchSet.Wherein BenchSet refers to when executing agency is not connected to valve, executing agency from
Start the pressure limit that executing agency's film head is removed during movement reaches rated travel.It is that bullet is represented with film head atmospheric pressure value
The parameter of spring pretightning force.
Take a seat power: in the case where mediator depletion, valve is taken a seat the power that differential process pressure is obtained multiplied by diaphragm area.In valve
In the case where normal operation, valve differential process pressure of taking a seat multiplied by the power that diaphragm area obtains subtracts pressure medium multiplied by valve not
Balanced area is calculated.
Pressure, time and the row that operated pneumatic valve portable diagnostic system passes through measurement and acquisition pneumatic control valve and its attachment
The parameters such as journey, and collected data are shown in the coordinate system being made of X and Y in the form of image or data.System root
According to these images or the quality of data judgement confirmation valve components and performance, make about valve synthetic performance evaluation.Pass through
Different functional test it can be concluded that valve overall performance.
By switch time curve, the response time parameter of pneumatic control valve is calculated.Valve response time properties include T63、
Td(system time lags time), time constant t and valve response time.
T63It is a kind of measurement of equipment response time, it is by acting on a small Stepped Impedance Resonators (usual 1%-5%)
It is measured on to system.T63Measured since the time Stepped Impedance Resonators, until system output reach 63% it is final steady
Until the time of state value.It is the combined value of system time lags time and system time constant.
Slack time (quiet hour) from a small Stepped Impedance Resonators (usual 0.25%-5%), system do not respond to by
The length of time detected.It is measured since the time Stepped Impedance Resonators, until tested test system generates first and can examine
Until the time of the response measured, Slack time can be used for valve member or entire technical process.
Time constant is the time parameter for being commonly used in single order element.It is that first is generated from system relative to small
Until system output reaches 63% final stable state from when the response that can be detected of Stepped Impedance Resonators (usual 0.25%-5%)
The time interval that measurement obtains when value.When for open loop process, time constant is typically expressed as t.
Optimal control of the valve response time for many processes, it is important that valve rapidly reaches a specified position
It sets.The valve response time is to pass through T63It measures, T63It is the corresponding change for reaching 63% to output since changing input signal
When measure the obtained time.It includes the Slack time of valve member and the dynamic time of valve member.
The present apparatus calls each section using Data Service data service as core using the state machine architecture for being easy to extend
Function engine can be realized the multi-tasks such as data acquisition, real-time display, data analysis, data communication, storage and playback.
Communication interface unit gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off for issuing, with
And the response data for first instruction that the observing and controlling cabinet is sent is received, the response data includes: described in expression
First response data of the valve stroke of air pressure regulator；
Memory, for storing tentation data corresponding to the valve stroke；Memory mode can take local deposit
Storage, can also be taken through network storage.
Processor, for according to first response data compared with the corresponding tentation data of the valve stroke knot
Fruit, determine the pneumatic control valve whether failure；
The data collection station that data acquisition module is made of CRIO (CompactRIO) realizes that synchronizing for physical signal is adopted
Collection.It acquires sampling parameter and reads acquisition data, data are issued into network storage engine by network transmission and are locally stored
And network storage.
Debug engine by program operation process state or error message store into local file, pass through UDP
The mode of (User Datagram Protocol) User Datagram Protocol is sent.
All-in-one machine can receive UDP message by interface unit, check facility information.
Internet communication engine is mainly responsible for the communication of controller and all-in-one machine, the acquisition number that will be sent by data capture engine
According to being sent to all-in-one machine, while receiving the control instruction of all-in-one machine, control instruction, which can be, to be started acquisition, stops acquisition and again
Start controller etc..
Tentation data carries out in the response data and memory that the present embodiment passes through data collecting module collected by processor
Compare, and then realizes the judgement to the malfunction of air pressure regulator.
It will be understood by those skilled in the art that all or part of function of various methods can pass through in above embodiment
The mode of hardware is realized, can also be realized by way of computer program.When function all or part of in above embodiment
When being realized by way of computer program, which be can be stored in a computer readable storage medium, and storage medium can
To include: read-only memory, random access memory, disk, CD, hard disk etc., it is above-mentioned to realize which is executed by computer
Function.For example, program is stored in the memory of equipment, when executing program in memory by processor, can be realized
State all or part of function.In addition, when function all or part of in above embodiment is realized by way of computer program
When, which also can store in storage mediums such as server, another computer, disk, CD, flash disk or mobile hard disks
In, through downloading or copying and saving into the memory of local device, or version updating is carried out to the system of local device, when logical
When crossing the program in processor execution memory, all or part of function in above embodiment can be realized.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (15)
1. the method that a kind of On-line Fault of pneumatic control valve monitors, which is characterized in that the described method includes:
All-in-one machine, which is issued, gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off；
The all-in-one machine receives the response data for first instruction that the observing and controlling cabinet is sent, the response data packet
It includes: indicating the first response data of the valve stroke of the air pressure regulator, indicate the Dead Zone of the pneumatic control valve
Second response data, and indicate at least one of the third response data of valve resolution of the pneumatic control valve；
The all-in-one machine according to the matching result of response data tentation data corresponding with first instruction, determine described in
Pneumatic control valve whether failure.
2. the method for the On-line Fault monitoring of a kind of pneumatic control valve according to claim 1, which is characterized in that the one
Machine determines that the pneumatic control valve is according to the comparison result of response data tentation data corresponding with first instruction
No failure includes: comparison result of the all-in-one machine according to the third response data and scheduled valve resolution, determines institute
State pneumatic control valve whether failure.
3. the method for the On-line Fault monitoring of a kind of pneumatic control valve according to claim 1, which is characterized in that described first
Instruction instruction continuously turns on or off the pneumatic control valve；
First response data indicates the dynamic scan data of the gate stroke of the air pressure regulator；
The all-in-one machine according to the comparison result of response data tentation data corresponding with first instruction, determine described in
Whether failure includes: pneumatic control valve
According to the comparison result of the dynamic scan data scheduled dynamic Characteristic Data corresponding with first instruction, determine
The pneumatic control valve whether failure.
4. the method for the On-line Fault monitoring of a kind of pneumatic control valve according to claim 1, which is characterized in that
The first instruction instruction gradually turns on or off the pneumatic control valve with fixed step size；
First response data indicates the static scanning data of the gate stroke of the air pressure regulator；
The all-in-one machine according to the comparison result of response data tentation data corresponding with first instruction, determine described in
Whether failure includes: pneumatic control valve
According to the comparison result of the static scanning data and scheduled static scanning data, whether the pneumatic control valve is determined
Failure.
5. the method for the On-line Fault monitoring of a kind of pneumatic control valve according to claim 1, which is characterized in that described first
Instruction instruction turns on or off the pneumatic control valve in a manner of Spline smoothing；
First response data indicates that the Spline smoothing in the gate stroke of the air pressure regulator is tested；
The all-in-one machine according to the comparison result of response data tentation data corresponding with first instruction, determine described in
Whether failure includes: pneumatic control valve
According to the comparison result of Spline smoothing test and the test of scheduled Spline smoothing, whether the pneumatic control valve is determined
Failure.
6. the method for the On-line Fault monitoring of a kind of pneumatic control valve according to claim 1, which is characterized in that the response
Data further include: indicate the third response data of the die pressure；
The all-in-one machine according to the comparison result of response data tentation data corresponding with first instruction, determine described in
Whether failure includes: pneumatic control valve
According to first response data and the third response data, the execution architectural characteristic of the pneumatic control valve is obtained；
With executing the architectural characteristic scheduled comparison result for executing architectural characteristic corresponding with the valve stroke according to obtained,
Determine the pneumatic control valve whether failure.
7. the method for the On-line Fault monitoring of a kind of pneumatic control valve according to claim 1, which is characterized in that
The all-in-one machine according to the matching result of response data tentation data corresponding with first instruction, determine described in
Whether failure includes: pneumatic control valve
The all-in-one machine obtains valve response time properties according to first response data, is responded according to valve obtained
The comparison result of time response and scheduled valve response time properties, determine the pneumatic control valve whether failure.
The valve response time properties include equipment response time, Slack time, time constant and valve response time.
8. the method for the On-line Fault monitoring of a kind of pneumatic control valve according to claim 1, which is characterized in that the method
Further include:
The tentation data is the response data obtained according to the valve stroke of monitoring fault-free pneumatic control valve.
9. a kind of On-line Fault monitoring device of pneumatic control valve, which is characterized in that
Communication interface unit gives observing and controlling cabinet, Yi Jijie to the first instruction that air pressure regulator turns on or off for issuing
The response data for first instruction that the observing and controlling cabinet is sent is received, the response data includes: indicating the air pressure
First response data of the valve stroke of regulating valve；
Memory, for storing tentation data corresponding to the valve stroke；
Processor, for the comparison result according to first response data tentation data corresponding with the valve stroke, really
The fixed pneumatic control valve whether failure；
The valve stroke refers to that the air pressure regulator is moved to another position from a position.
10. the On-line Fault monitoring device of pneumatic control valve according to claim 9, which is characterized in that
The communication interface unit is also used to issue the second instruction to pneumatic control valve change working condition to the observing and controlling machine
Case；Receive the response data for second instruction that the observing and controlling cabinet is sent, the sound for second instruction
Data are answered to indicate the Dead Zone of the pneumatic control valve；
The processor is also used to the comparison result according to response data tentation data corresponding with the Dead Zone, really
The fixed pneumatic control valve whether failure.
11. the On-line Fault monitoring device of pneumatic control valve according to claim 9, which is characterized in that
The communication interface unit, which is also used to issue, gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off, with
And receive the response data for first instruction that the observing and controlling cabinet is sent, the response data further include: indicate institute
State the third response data of the valve resolution of air pressure regulator；
The processor is also used to according to the third response data compared with the corresponding tentation data of the valve resolution
As a result, determine the pneumatic control valve whether failure.
12. the On-line Fault monitoring device of pneumatic control valve according to claim 9, which is characterized in that
The communication interface unit, which is also used to issue, gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off, with
And receive the response data for first instruction that the observing and controlling cabinet is sent, the response data further include: indicate institute
State the 4th response data of the dynamic Characteristic Data of air pressure regulator；
The processor is also used to the ratio according to the 4th response data and the corresponding tentation data of the dynamic Characteristic Data
Compared with as a result, determine the pneumatic control valve whether failure.
13. the On-line Fault monitoring device of pneumatic control valve according to claim 9, which is characterized in that
The first instruction instruction continuously turns on or off the pneumatic control valve；
First response data indicates the dead point scan data of the gate stroke of the air pressure regulator；
The processor is specifically used for being scanned according to the dead point scan data scheduled dead point corresponding with first instruction
The comparison result of data, determine the pneumatic control valve whether failure.
14. the On-line Fault monitoring device of pneumatic control valve according to claim 9, which is characterized in that
The communication interface unit, which is also used to issue, gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off, with
And receive the response data for first instruction that the observing and controlling cabinet is sent, the response data further include: indicate institute
State the 6th response data of the Spline smoothing data of air pressure regulator；
The processor is also used to the ratio according to the 6th response data and the corresponding tentation data of the Spline smoothing data
Compared with as a result, determine the pneumatic control valve whether failure.
15. the On-line Fault monitoring device of pneumatic control valve according to claim 9, which is characterized in that
The communication interface unit, which is also used to issue, gives observing and controlling cabinet to the first instruction that air pressure regulator turns on or off, with
And receive the response data for first instruction that the observing and controlling cabinet is sent, the response data further include: indicate institute
State the 7th response data of executing agency's performance data of air pressure regulator；
The processor is also used to according to the 6th response data tentation data corresponding with executing agency's performance data
Comparison result, determine the pneumatic control valve whether failure.
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| CN201710713420.8A CN109404603A (en) | 2017-08-18 | 2017-08-18 | A kind of method and apparatus of the On-line Fault monitoring of pneumatic control valve |
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| CN201710713420.8A CN109404603A (en) | 2017-08-18 | 2017-08-18 | A kind of method and apparatus of the On-line Fault monitoring of pneumatic control valve |
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| CN110705109A (en) * | 2019-10-09 | 2020-01-17 | 重庆川仪调节阀有限公司 | Method for determining equal-percentage throttling window molded line of sleeve regulating valve |
| CN110715174A (en) * | 2019-10-17 | 2020-01-21 | 重庆川仪自动化股份有限公司 | Valve position accumulation method and device of intelligent valve positioner, storage medium and electronic terminal |
| CN110806327A (en) * | 2019-11-08 | 2020-02-18 | 北京昊鹏智能技术有限公司 | Fault detection method and device, electronic equipment and storage medium |
| CN111503525A (en) * | 2020-04-28 | 2020-08-07 | 浙江工业大学 | On-line diagnosis method for air chamber air leakage of pneumatic regulating valve |
| CN112525521A (en) * | 2020-11-25 | 2021-03-19 | 重庆川仪自动化股份有限公司 | Regulating valve clamping fault detection method, terminal, medium and valve positioner |
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| CN110705109A (en) * | 2019-10-09 | 2020-01-17 | 重庆川仪调节阀有限公司 | Method for determining equal-percentage throttling window molded line of sleeve regulating valve |
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| CN112525521A (en) * | 2020-11-25 | 2021-03-19 | 重庆川仪自动化股份有限公司 | Regulating valve clamping fault detection method, terminal, medium and valve positioner |
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