CN105387886B - A kind of method of testing of ball valve dynamic characteristic parameter - Google Patents
A kind of method of testing of ball valve dynamic characteristic parameter Download PDFInfo
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- CN105387886B CN105387886B CN201510843657.9A CN201510843657A CN105387886B CN 105387886 B CN105387886 B CN 105387886B CN 201510843657 A CN201510843657 A CN 201510843657A CN 105387886 B CN105387886 B CN 105387886B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The present invention relates to valve assembling measuring technology neck, especially relate to the method for testing of a kind of ball valve dynamic characteristic parameter, the system of the present invention includes hardware system and the software control system based on Virtual Instrument Program that ball valve dynamic characteristic parameter tests；Hardware system as the carrier of virtual instrument software and execution unit, complete tested media automatically switch, tested media pressure and the action such as flow automatically adjusts, driven by servomotor ball valve aperture automatically adjusts.Software systems use the programming mode based on virtual instrument, for realizing that pressure data collection and data prediction, flow data collector and data prediction, the temperature data acquisition of tested media and data prediction, ball valve dynamic characteristic parameter automatically analyze and preserve, characterisitic parameter curve shows in real time.Collaborative work by hardware system and software systems, it is achieved ball valve is to aperture, pressure, flow and temperature characterisitic, the test automatically of Dead Zone both dynamic characteristic parameters and analysis.
Description
Technical field
The present invention relates to valve assembling technical field of measurement and test, especially relate to the test side of a kind of ball valve dynamic characteristic parameter
Method.
Background technology
Valve, as the one of executing agency, is oil, chemical industry, power station, long-distance transport pipes, shipbuilding, nuclear industry, various low temperature
The indispensable control equipment of every field such as engineering, aerospace and offshore oil production.And wherein, ball valve is as a kind of main valve
Class, at home and abroad the usage amount in every profession and trade constantly rises.
Ball valve refers to drive the spheroid of manhole to make opening and closing element, and the valve rotating around ball valve axis with valve rod
Door, is mainly used in opening and closing pipeline and equipment medium, also can be used for regulation and the control of fluid.The performance detection of ball valve is main
Strength character to be had detection, sealing property detection, flow resistance detection, performance detection and detection in service life etc..China has
Closing valve testing standard, GB/T13927-92 " universal valve pressure test " and ZBJ1606-90 " test of valve and detection " mark
In Zhun, concrete regulation is done to the pressure test and detection of universal valve (including ball valve).For regulation valve, in China regulation
Valve returns instrument and meter industry to be managed, universal valve industry without reference to.By GB4213 " pneumatic control valve current techique bar
Part " and the requirement of GB10869 " control valve for power station technical conditions ", for the situation of maintenance sites, the main experimental of regulation valve with
Detection project includes: return difference；Dead band；Leakage rate；Rated travel deviation and housing pressure test etc..And in universal valve
Ball valve, is not directed to flow, aperture, pressure and temperature characteristic test and dead band test etc. in the conventionally test of manufacturer
Content.And current ball valve intensity, sealing and flow resistances etc. except meeting routine in the occasion that reality is applied are basic
Requiring, increasing trend of work performance has been included in the index of examination ball valve quality.Such as some well-known valve controls external
Zhi Qi manufacturing enterprise, on the basis of studying all kinds of valve dynamic characteristic for a long period of time, it is proposed that computer based follows change automatically
Speed control technology, is remarkably improved the quality of valve real work.Thus, it for the test of the dynamic characteristic parameter of ball valve, is
Grasp ball valve trend of work performance quality and promote means necessary to ball valve manufacturing process and level.Existing domestic factory
Family is when the performance of ball valve detects, and conventional method of testing and test equipment can only meet intensity, sealing, flow resistance, action
Energy and the detection in service life, and a kind of method of testing based on computer controlled automatic and data collection and analysis cannot be provided
And platform.Through to prior art literature retrieval discovery, Chinese Patent Application No.: 200610154454.X, patent name is: flow
The characteristic method of testing of proportioning valve.From the point of view of the method for testing of the flow ratio valve feature curve according to this invention offer, main
Discuss the automatic testing equipment of a kind of flow ratio valve feature curve.This device air is as tested media, during test
By the electric current of change measured flux proportioning valve coil, thus change the aperture of valve port, reach to change the purpose of flow, and showing
Show the characteristic curve relation showing flow proportion valve coil current and flow on device.The method of testing of this invention and device are exclusively used in
The aperture of flow proportion valve and the test of rating curve, can not meet the dynamic characteristic parameter of ball valve, including aperture, pressure
Power, flow and temperature characterisitic and the test request of Dead Zone.Additionally, this test device uses air to replace traditional liquid
As tested media, although improve operating efficiency, but due to Jie's qualitative diversity under actual working state, only made by air
For medium it cannot be guaranteed that the characteristic curve that test obtains is consistent with actual conditions.
Content of the invention
For above technical problem, it is an object of the invention to break through existing ball valve dynamic characteristic parameter method of testing not
Foot, provides a kind of reasonable in design, can integration testing medium automatically switch, tested media pressure and flow automatically adjusts, ball valve
Aperture automatically adjusts, pressure and flow is monitored in real time, medium temperature is monitored in real time, data prediction, ball valve dynamic characteristic parameter
Automatically analyze and preserve and characterisitic parameter curve such as shows at the method for testing of ball valve dynamic characteristic parameter of function, can be effectively
Improve operating efficiency, and the testing requirement of plurality of specifications ball valve can be met, for the pushing away of standardized test of ball valve dynamic characteristic
Wide and raising China ball valve industry integrated artistic level has practical significance.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
The test system of a kind of ball valve dynamic characteristic parameter, described test system mainly includes hardware system and soft
Part control system, wherein, described hardware system, as the carrier of virtual instrument software and execution unit, completes test and is situated between
Matter automatically switches, tested media pressure and flow automatically adjusts, driven by servomotor ball valve aperture automatically adjusts action；Described
Software control system realizes pressure data collection and data prediction, flow data collector and data prediction, tested media
Temperature data acquisition and data prediction, ball valve dynamic characteristic parameter automatically analyze and preserve, and characterisitic parameter curve shows in real time
Function；By hardware system and software control system collaborative work, it is achieved ball valve is special to aperture, pressure, flow and temperature
Property and the automatically test of Dead Zone dynamic characteristic parameter and analyzing.
Further, described hardware system mainly includes multimedium container, water tank, fuel tank, bellows, heater, system
Cooler, water pump, oil pump and blower fan driver element, water pump, oil pump, blower fan, tested media switch valve, flow regulator, pressure
Adjuster, servomotor, servo-driver, valve rod drive mechanism, industrial computer, touching-type monitor, motion control card, data acquisition
Truck, upstream pressure sensor, downstream pressure sensor, flow sensor, temperature sensor, rotary encoder and to be measured try
Valve；Wherein, multimedium container includes water tank, fuel tank and bellows, it is possible to provide water, oil, gas totally three kinds of tested media, and by connecting
Water pump, oil pump or fan driver element automatic switchover tested media, simultaneously for use tested media cut by tested media
Change valve closing circulation line；Hot device and the refrigerator of temperature for changing medium are installed in multimedium container；For adjusting
Flow regulator and the pressure regulator of the flow of joint tested media and pressure size are arranged in test loop；Industrial computer passes through
Video line and USB line are connected with touch display, use pci bus mode to be connected with motion control card and data collecting card；Touch
Touching display and can realizing human-computer interaction function, user can input setup parameter on touching-type monitor and read test data；
Pressure sensor is divided into upstream pressure sensor and downstream pressure sensor, is respectively placed in the pipeline before and after ball valve to be tested,
For before measuring valve, the pressure data after valve；Flow sensor and temperature sensor are placed in the pipeline before test ball valve, point
Yong Yu not measure the temperature of the flow flowing through ball valve and tested media, pressure, flow and temperature sensor by shielded cable with
Data collecting card connects, and test data are sent to industrial computer one end；The pulse delivery outlet of motion control card connects servo-drive
The pulse signal of device drives port, the startup of controllable servomotor and stopping；The digital output mouth of motion control card connects
The direction controlling port of servo-driver, the rotation direction of controllable servomotor；Servo-driver connects servomotor, it is achieved
Operation to motor drives, and servomotor is connected with valve rod drive mechanism, drives ball valve closure or openness；Rotary encoder is pacified
It is contained in valve rod to drive on the synchronizing shaft of structure, be connected to motion control card by shielding data wire, for measuring the aperture of ball valve
Value.
Further, described software control system is the ball valve dynamic characteristic parameter test software control built based on virtual instrument
System processed, mainly includes following functions module:According to arranging parameter, control water pump, oil pump or fan driver element are cut automatically
Change tested media；According to test request, the flow of tested media and force value in automatic adjustment circuit, and automatically adjust ball valve
Aperture size；Real-time Collection pressure, flow and temperature data are gone forward side by side line number Data preprocess；Ball valve dynamic characteristic is joined
Number automatically analyzes and preserves, and real-time display characteristic parameter curve.
As preferably, described functional module carries out Real-time Collection pressure, flow and temperature data and carries out data and locate in advance
The pressure sensing in pipeline during reason, before and after reading ball valve to be tested in real time by software control system driving data capture card
After device value, in the following manner process can be carried out to data:Carry out data smoothing process by gaussian filtering, remove pressure oscillation
Spike disturbs；Reduce flow rate test interference proportion in useful signal for the signal by digital filtering method；To test number
According to carrying out equalization and tranquilization process, eliminate drift and the temperature drift of temperature test, thus realize Removing Random No and system
The error that noise causes.
As preferably, described Implement of Function Module ball valve dynamic characteristic parameter automatically analyzes and preserves, by software control
Pressure, flow, aperture and temperature data and Dead Zone both dynamic characteristic parameters that test is obtained by system processed are distinguished
Carry out dynamic analysis and automatic record, and pressure, flow, aperture and the temperature characteristics that will obtain after analyzing and dead band
Characteristic curve is saved in industrial computer.
As preferably, when described Implement of Function Module characterisitic parameter curve shows in real time, incited somebody to action by software control system
Pressure, flow, aperture and temperature characteristics and Dead Zone curve that test obtains are shown on touching-type monitor in real time.
As above test systematic difference, the application also proposes the method for testing of a kind of ball valve dynamic characteristic parameter, profit
Carry out test automatically and the analysis of aperture, pressure, flow and temperature characterisitic, and Dead Zone by above-mentioned test system to ball valve
Automatically the test of dynamic characteristic parameter and analysis, it is achieved the test to ball valve dynamic characteristic parameter；Wherein,
Carry out the automatically test of aperture, pressure, flow and temperature characterisitic to ball valve and analyze, specifically including following steps:
The first step, arranges the aperture setting table that ball valve to be measured need to be tested on the human-computer interaction interface of software control system,
Medium temperature sets table, media type setting value, and pressure medium sets table and rate-of flow sets table, and from the position that aperture is zero
Put startup test；
Second step, software control system drives water pump, oil pump and blower fan driver element and tested media switch valve, will survey
Medium in test tube road is switched to the media type setting value setting, and regulates tested media by driving pressure regulator
Pressure sets first value of table to pressure medium, and the flow driving flow regulator to regulate tested media sets to rate-of flow
Determine first value of table, drive heater or refrigerator, and combine the temperature of temperature sensor regulation tested media to medium temperature
Degree sets first value of table；
3rd step, software control system sets first value of table according to aperture, drives servo electricity by motion control card
Machine so that ball valve to be measured runs to the position of the opening value specified automatically, and open position data are by rotary encoder closed loop feedback
To motion control card, the upstream pressure of ball valve now to be tested is tested and recorded to software control system driving data capture card automatically
The flow value of the flow sensor before the force value of sensor and downstream pressure sensor and ball valve to be tested；
4th step, software control system sets second value of table according to aperture, drives servo electricity by motion control card
Machine so that ball valve to be measured then runs to the position of second opening value specified automatically, and is repeated in analogizing, until to be measured
Ball valve runs to the position of all opening values that aperture setting table is specified successively automatically, reaches each aperture at ball valve to be measured simultaneously
Behind position, the upstream pressure sensor of ball valve now to be tested is tested and recorded to software control system driving data capture card automatically
Flow value with the flow sensor before the force value of downstream pressure sensor and ball valve to be tested；
5th step, the pressure that software control system regulates tested media by driving pressure regulator sets to pressure medium
Determine second value of table, and the like, until the pressure of regulation tested media is to last value of pressure medium setting table,
And the flow of tested media and temperature keep constant, repeat step 3 to step 4, software control system driving data capture card
Automatically test and the record upstream pressure sensor of ball valve now to be tested and the force value of downstream pressure sensor and to be measured
The flow value of the flow sensor tried before valve；
6th step, the flow that software control system regulates tested media by driving flow regulator sets to rate-of flow
Determine second value of table, and the like, until the flow of regulation tested media is to last value of rate-of flow setting table,
And the pressure and temperature of tested media keeps constant, repeat step 3 to step 4, software control system driving data capture card
Automatically test and the record upstream pressure sensor of ball valve now to be tested and the force value of downstream pressure sensor and to be measured
The flow value of the flow sensor tried before valve；
7th step, software control system is passed through heater or refrigerator, and is combined temperature sensor regulation tested media
Temperature to medium temperature set table second value, and the like, until regulate tested media temperature set to medium temperature
Determine last value of table, and the pressure of tested media and flow keep constant, repeat step 3 to step 4；Software control is
Upstream pressure sensor and the downstream pressure sensor of ball valve now to be tested is tested and recorded to system driving data capture card automatically
Force value and ball valve to be tested before the flow value of flow sensor；
8th step, the tables of data of aperture, pressure, flow and temperature that software control system obtains according to test, automatically divide
Analyse and generate aperture and pressure characteristic, aperture and discharge characteristic, pressure and rating curve, the medium of ball valve to be tested
Temperature and pressure characteristic curve and medium temperature and rating curve.
To the automatically test of Dead Zone dynamic characteristic parameter with analyze, specifically include following steps:
The first step, the open position arranging ball valve to be measured on the human-computer interaction interface of software control system is respectively maximum
The 25%th, the 50% and 75% of aperture, and start test from aperture as the position of zero after setting media type；
Second step, software control system drives servomotor by motion control card so that ball valve to be measured is according to clockwise
Direction rotate to maximum opening the 25%th, 50% and 75% position, then software control system control ball valve to be measured is with maximum opening
0.1% the anglec of rotation increase aperture in the direction of the clock, and to read actual aperture change by rotary encoder anti-simultaneously
Feedback value, until observing that an observable stroke aperture change occurs, software control system records ball valve now to be measured automatically
The opening value having been rotated through under driven by servomotor；Then software control system drives ball valve to be measured according to side counterclockwise
To the anglec of rotation with the 0.1% of maximum opening equally increases aperture counterclockwise, and is read by rotary encoder simultaneously
Taking the aperture change value of feedback of reality, until observing that an observable aperture change occurs, software control system is remembered automatically
Record the opening value that ball valve now to be measured has been rotated through under driven by servomotor；Two ball valves to be measured of above-mentioned record are at servo electricity
The difference of opening value that machine turns under driving is ball valve to be measured at the 25%th, the 50% and dead band during 75% position of maximum opening；
3rd step, software control system, according to the tables of data testing the aperture obtaining and dead band, automatically analyzes and generates and treat
Survey the Dead Zone curve of ball valve.
Beneficial effects of the present invention:
The present invention being applied to the test of ball valve dynamic characteristic parameter with measuring technology based on automatically controlling of virtual instrument,
Solve the defect to product dynamic characteristic parameter method of testing in ball valve industry, and overcome industry can only use people at present
Work manually regulates parameter and the pattern of record data, have employed computer based hardware systems and the software based on virtual instrument
Engineering framework, it is achieved complete automatic testing and control and data acquisition, and provide automatically saving of ball valve dynamic characteristic parameter
And analysis, improve the valuable reference information of design level offer of ball valve further for lathe producer simultaneously and effectively divide
Analysis means.
Brief description
Fig. 1 is the structural representation of the present invention；
In figure: 1-multimedium container, 2-water tank, 3-fuel tank, 4-bellows, 5-heater, 6-refrigerator, 7-water pump, oil pump
With blower fan driver element, 8-water pump, 9-oil pump, 10-blower fan, 11-tested media switch valve, 12-flow regulator, 13-presses
Draught control mechanism, 14-servomotor, 15-servo-driver, 16-valve rod drive mechanism, 17-industrial computer, 18-touching-type monitor,
19-motion control card, 20-data collecting card, 21-upstream pressure sensor, 22-downstream pressure sensor, 23-flow sensing
Device, 24-temperature sensor, 25-rotary encoder, 26-ball valve to be tested.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention and accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of not making creative work
Execute example, broadly fall into the scope of protection of the invention.
As it is shown in figure 1, the test system of a kind of ball valve dynamic characteristic parameter, described test system mainly includes for ball
The hardware system of valve actuation step response parameter testing and the software control system based on Virtual Instrument Program, wherein, described
Hardware system as the carrier of virtual instrument software and execution unit, complete tested media automatically switch, tested media pressure
Power and flow automatically adjust, driven by servomotor ball valve aperture automatically adjusts action；Described software control system realizes pressure
Data acquisition and data prediction, flow data collector and data prediction, the temperature data acquisition of tested media and data are pre-
Process, ball valve dynamic characteristic parameter automatically analyzes and preserves, and characterisitic parameter curve shows function in real time；Pass through hardware system
With software control system collaborative work, it is achieved ball valve is to aperture, pressure, flow and temperature characterisitic and Dead Zone dynamic characteristic
Automatically the test of parameter and analysis.
Described hardware system mainly includes multimedium container 1, water tank 2, fuel tank 3, bellows 4, heater 5, refrigeration
Device 6, water pump, oil pump and blower fan driver element 7, water pump 8, oil pump 9, blower fan 10, tested media switch valve 11, flow regulator
12, pressure regulator 13, servomotor 14, servo-driver 15, valve rod drive mechanism 16, industrial computer 17, touching-type monitor
18, motion control card 19, data collecting card 20, upstream pressure sensor 21, downstream pressure sensor 22, flow sensor 23,
Temperature sensor 24, rotary encoder 25 and ball valve to be tested 26.Multimedium container 1 includes water tank the 2nd, fuel tank 3 and bellows 4,
Water, oil, gas totally three kinds of tested media can be provided, and automatically switched test by water pump, the oil pump or fan driver element 7 connecting
Medium, simultaneously untapped tested media closes circulation line by tested media switch valve 11；Three kinds of media of water, oil, gas
Container in be assembled with heater 5 and refrigerator 6, for changing the temperature of medium；Flow regulator 12 and pressure regulator
13 are arranged in test loop, for regulating flow and the pressure size of tested media；Industrial computer 17 passes through video line and USB line
It is connected with touch display 18, use pci bus mode to be connected with motion control card 19 and data collecting card 20, build hardware control
The basic platform of system processed；Touch display 18 can realize human-computer interaction function, and user can input on touching-type monitor 18
Setup parameter and reading test data；Pressure sensor is divided into upstream pressure sensor 21, downstream pressure sensor 22, sets respectively
Be placed in the pipeline before and after ball valve 26 to be tested, for before measuring valve, the pressure data after valve.Flow sensor 23 and temperature pass
Sensor 24 is placed in the pipeline before test ball valve 26, is respectively used to measure the temperature of the flow flowing through ball valve and tested media,
Pressure, flow and temperature sensor are connected with data collecting card 20 by shielded cable, and test data are sent to industrial computer 17
One end；The pulse signal that the pulse delivery outlet of motion control card connects servo-driver drives port, controllable servomotor
Start and stop；The digital output mouth of motion control card 19 connects the direction controlling port of servo-driver 15, can control and watches
Take the rotation direction of motor；Servo-driver 15 connects servomotor, it is achieved the operation to motor drives, and servomotor and valve
Bar drive mechanism 16 connects, and drives ball valve closure or openness；Rotary encoder 25 is arranged on the synchronizing shaft that valve rod drives structure 16
On, it is connected to motion control card 19 by shielding data wire, for measuring the opening value of ball valve.Software control system 27 is arranged on
On industrial computer 17, motion control card 19 and data collecting card 20 is driven to complete above-mentioned all operation and data of automatically controlling
Gather and analyze.
Described software control system uses LabVIEW graphical programming language as programming tool, builds based on virtual
The ball valve dynamic characteristic parameter test software control system of instrument, mainly includes following functions module:According to arranging parameter, control
Water pump processed, oil pump or fan driver element automatic switchover tested media；According to test request, test in automatic adjustment circuit is situated between
The flow of matter and force value, and automatically adjust the aperture size of ball valve；Real-time Collection pressure, flow and temperature data are simultaneously carried out
Data prediction；Ball valve dynamic characteristic parameter is automatically analyzed and preserves, and real-time display characteristic parameter curve.
When the functional module of software control system carries out Real-time Collection pressure, flow and temperature data and carries out data and locates in advance
The pressure in pipeline during reason, before and after reading ball valve to be tested in real time by software control system 27 driving data capture card 20
After sensor values, in the following manner process can be carried out to data:Carry out data smoothing process by gaussian filtering, remove pressure wave
Dynamic spike interference；Reduce flow rate test interference proportion in useful signal for the signal by digital filtering method；To survey
Examination data carry out equalization and tranquilization process, eliminate drift and the temperature drift of temperature test, thus realize Removing Random No and
The error that system noise causes.
Realize that ball valve dynamic characteristic parameter automatically analyzes and preserves when software control system, will by software control system
Pressure, flow, aperture and temperature data and Dead Zone both dynamic characteristic parameters that test obtains enter Mobile state respectively
Specificity analysis and automatic record, and the pressure, flow, aperture and the temperature characteristics that obtain and Dead Zone curve after analyzing
It is saved in industrial computer.
When the Implement of Function Module characterisitic parameter curve of software control system shows in real time, will by software control system
Pressure, flow, aperture and temperature characteristics and Dead Zone curve that test obtains are shown on touching-type monitor in real time.
As above test systematic difference, the application also proposes the method for testing of a kind of ball valve dynamic characteristic parameter, profit
Carry out test automatically and the analysis of aperture, pressure, flow and temperature characterisitic, and Dead Zone by above-mentioned test system to ball valve
Automatically the test of dynamic characteristic parameter and analysis, it is achieved the test to ball valve dynamic characteristic parameter；Wherein,
Carry out the automatically test of aperture, pressure, flow and temperature characterisitic to ball valve and analyze, specifically including following steps:
The first step, arranges the aperture setting that ball valve 26 to be measured need to be tested on the human-computer interaction interface of software control system 27
Table, medium temperature sets table, media type setting value, and pressure medium sets table and rate-of flow sets table, and is zero from aperture
Position start test.
Second step, software control system 27 drives water pump, oil pump and blower fan driver element 7 and tested media switch valve
11, the medium in test pipeline is switched to the media type setting value setting, and is regulated by driving pressure regulator 13
The pressure of tested media sets first value of table to pressure medium, drives flow regulator 12 to regulate the flow of tested media
Set first value of table to rate-of flow, drive heater 5 or refrigerator 6, and combine temperature sensor 24 regulation test Jie
The temperature of matter sets first value of table to medium temperature.
3rd step, software control system 27 sets first value of table according to aperture, is driven by motion control card 19 and watches
Take motor 14 so that ball valve 26 to be measured runs to the position of the opening value specified automatically, and open position data are by rotary encoder
25 closed loop feedback are to motion control card 19.Software control system 27 driving data capture card 20 is automatically tested and records now to be measured
Stream before the upstream pressure sensor 21 of valve 26 and the force value of downstream pressure sensor 22 of trying and ball valve to be tested 26
The flow value of quantity sensor 23.
4th step, software control system 27 sets second value of table according to aperture, is driven by motion control card 19 and watches
Take motor 14 so that ball valve 26 to be measured then runs to the position of second opening value specified automatically, and is repeated in analogizing,
Until ball valve 26 to be measured runs to the position of all opening values that aperture setting table is specified successively automatically, simultaneously at ball valve 26 to be measured
After reaching each open position, software control system 8 driving data capture card 20 is automatically tested and records ball valve now to be tested
Flow sensing before the upstream pressure sensor 21 of 26 and the force value of downstream pressure sensor 22 and ball valve to be tested 26
The flow value of device 23.
5th step, software control system 27 regulates the pressure of tested media to medium pressure by driving pressure regulator 13
Second value of power setting table, and the like, until the pressure of regulation tested media sets last of table to pressure medium
Individual value, and the flow of tested media and temperature keep constant, repeat step 3 to step 4.Software control system 27 driving data
The upstream pressure sensor 21 of ball valve 26 now to be tested and downstream pressure sensor 22 are tested and recorded to capture card 20 automatically
The flow value of the flow sensor 23 before force value and ball valve to be tested 26.
6th step, software control system 27 regulates the flow of tested media to medium stream by driving flow regulator 12
Second value of amount setting table, and the like, until the flow of regulation tested media sets last of table to rate-of flow
Individual value, and the pressure and temperature of tested media keeps constant, repeats step 3 to step 4.Software control system 27 driving data
The upstream pressure sensor 21 of ball valve 26 now to be tested and downstream pressure sensor 22 are tested and recorded to capture card 20 automatically
The flow value of the flow sensor 23 before force value and ball valve to be tested 26.
7th step, software control system 27 is passed through heater 5 or refrigerator 6, and is combined temperature sensor 24 regulation test
The temperature of medium sets second value of table to medium temperature., and the like, until the temperature of regulation tested media is to medium
Temperature sets last value of table, and the pressure of tested media and flow keep constant, repeats step 3 to step 4.Software
Control system 27 driving data capture card 20 is automatically tested and records upstream pressure sensor 21 He of ball valve 26 now to be tested
The flow value of the flow sensor 23 before the force value of downstream pressure sensor 22 and ball valve to be tested 26.
8th step, the tables of data of aperture, pressure, flow and temperature that software control system 27 obtains according to test, automatically
Analyze and generate the aperture of ball valve 26 to be tested and pressure characteristic, aperture and discharge characteristic, pressure and rating curve,
Medium temperature and pressure characteristic and medium temperature and rating curve.
Automatically the test of Dead Zone and the step analyzed:
The first step, the open position arranging ball valve 26 to be measured on the human-computer interaction interface of software control system 27 is respectively
The 25%th, 50% and the 75% of maximum opening, and start test from aperture as the position of zero after setting media type.
Second step, software control system 27 drives servomotor by motion control card 19 so that ball valve 26 to be measured according to
Rotate clockwise to maximum opening the 25%th, 50% and 75% position, then software control system 27 controls ball valve 26 to be measured
The anglec of rotation with the 0.1% of maximum opening increases aperture in the direction of the clock, and reads reality by rotary encoder 25 simultaneously
Aperture change value of feedback, until observing that the change of observable stroke aperture occurs, software control system 27 is remembered automatically
Record the opening value that ball valve 26 now to be measured has been rotated through under servomotor 14 driving；Then software control system 27 drives to be measured
Ball valve 26 is according to direction counterclockwise, and the anglec of rotation with the 0.1% of maximum opening equally increases aperture counterclockwise, and
Read the aperture change value of feedback of reality by rotary encoder 25, until observing that an observable aperture changes simultaneously
Existing, software control system 27 records the opening value that ball valve 26 now to be measured has been rotated through under servomotor 14 driving automatically；On
State the difference of the opening value that two ball valves 26 to be measured of record turn under servomotor 14 driving and be ball valve to be measured 26 in maximum
The 25%th, the 50% and dead band during 75% position of aperture.
3rd step, software control system 27, according to the tables of data testing the aperture obtaining and dead band, automatically analyzes and generates
The Dead Zone curve of ball valve 26 to be measured.
The present invention being applied to the test of ball valve dynamic characteristic parameter with measuring technology based on automatically controlling of virtual instrument,
Collaborative work by hardware system and software systems, it is achieved ball valve is to aperture, pressure, flow and temperature characterisitic, Dead Zone
Automatically the test of both dynamic characteristic parameters and analysis, solve in ball valve industry to product dynamic characteristic parameter method of testing
Defect, and overcome industry can only use at present manually regulate parameter and record data pattern, have employed based on
The hardware systems of computer and the soft project framework based on virtual instrument, it is achieved complete automatic testing and control and data acquisition
Collection, and provide automatically saving and analyzing of ball valve dynamic characteristic parameter, improve setting of ball valve further for lathe producer simultaneously
Meter level provides valuable reference information and effective analysis means, can be effectively improved operating efficiency, and can meet many
The testing requirement of kind of specification ball valve, for the popularization of standardized test of ball valve dynamic characteristic and raising China ball valve industry
Integrated artistic level has practical significance.
Finally, above example and accompanying drawing are only in order to illustrating technical scheme and unrestricted, although by above-mentioned
The present invention is described in detail by embodiment, it is to be understood by those skilled in the art that can in form and carefully
Various change is made to it, without departing from claims of the present invention limited range on Jie.
Claims (2)
1. the method for testing of a ball valve dynamic characteristic parameter, it is characterised in that: utilize the test system of ball valve dynamic characteristic parameter
System carries out the test automatically of aperture, pressure, flow and temperature characterisitic and analyzes to ball valve, and Dead Zone dynamic characteristic parameter
Automatically test and analyze, it is achieved the test to ball valve dynamic characteristic parameter, described test system mainly includes hardware controls
System and software control system, wherein, described hardware system is as the carrier of virtual instrument software and execution unit, complete
Become tested media automatic switchover, tested media pressure and flow automatically adjusts, driven by servomotor ball valve aperture automatic regulation moving
Make；Described software control system realizes pressure data collection and data prediction, flow data collector and data prediction, survey
The temperature data acquisition of examination medium and data prediction, ball valve dynamic characteristic parameter automatically analyze and preserve, characterisitic parameter curve
Display function in real time；By hardware system and software control system collaborative work, it is achieved ball valve is to aperture, pressure, flow
Test automatically with temperature characterisitic and Dead Zone dynamic characteristic parameter and analysis, wherein, described hardware system master
Multimedium container to be included, heater, refrigerator, water pump, oil pump and blower fan driver element, water pump, oil pump, blower fan, test is situated between
Matter switch valve, flow regulator, pressure regulator, servomotor, servo-driver, valve rod drive mechanism, industrial computer, touch
Formula display, motion control card, data collecting card, upstream pressure sensor, downstream pressure sensor, flow sensor, temperature
Sensor, rotary encoder and ball valve to be tested；Wherein, multimedium container includes water tank, fuel tank and bellows, it is possible to provide water, oil,
Gas totally three kinds of tested media, and by the water pump of connection, oil pump or fan driver element automatic switchover tested media, simultaneously for making
Tested media by tested media switch valve close circulation line；It is provided with for changing medium in multimedium container
The heater of temperature and refrigerator；Flow regulator and pressure regulator for the flow and pressure size that regulate tested media
It is arranged in test loop；Industrial computer passes through video line and USB line is connected with touch display, uses pci bus mode and fortune
Dynamic control card and data collecting card connect；Touch display can realize human-computer interaction function, and user can be on touching-type monitor
Input setup parameter and reading test data；Pressure sensor is divided into upstream pressure sensor and downstream pressure sensor, respectively
Be placed in the pipeline before and after ball valve to be tested, for before measuring valve, the pressure data after valve；Flow sensor and temperature sensor
It is placed in the pipeline before test ball valve, be respectively used to measure the temperature of the flow flowing through ball valve and tested media, pressure, flow
It is connected with data collecting card by shielded cable with temperature sensor, test data are sent to industrial computer one end；Motion control
The pulse signal that the pulse delivery outlet of card connects servo-driver drives port, the startup of controllable servomotor and stopping；Fortune
The digital output mouth of dynamic control card connects the direction controlling port of servo-driver, the rotation direction of controllable servomotor；
Servo-driver connects servomotor, it is achieved the operation to motor drives, and servomotor is connected with valve rod drive mechanism, drives
Ball valve closure or openness；Rotary encoder is arranged on valve rod and drives on the synchronizing shaft of structure, is connected to fortune by shielding data wire
Dynamic control card, for measuring the opening value of ball valve；Described software control system is the ball valve dynamic characteristic based on virtual instrument
Parameter testing software control system, mainly includes following functions module:According to arranging parameter, control water pump, oil pump or fan
Driver element automatic switchover tested media；According to test request, the flow of tested media and force value in automatic adjustment circuit,
And automatically adjust the aperture size of ball valve；Real-time Collection pressure, flow and temperature data are gone forward side by side line number Data preprocess；To ball
Valve dynamic characteristic parameter automatically analyzes and preserves, and real-time display characteristic parameter curve；
The test system utilizing ball valve dynamic characteristic parameter carries out the automatic survey of aperture, pressure, flow and temperature characterisitic to ball valve
Examination and analyzing, specifically includes following steps:
The first step, arranges the aperture setting table that ball valve to be measured need to be tested, medium on the human-computer interaction interface of software control system
Temperature sets table, media type setting value, and pressure medium sets table and rate-of flow sets table, and opens from the position that aperture is zero
Dynamic test；
Second step, software control system drives water pump, oil pump and blower fan driver element and tested media switch valve, by testing tube
Medium in road is switched to the media type setting value setting, and regulates the pressure of tested media by driving pressure regulator
Set first value of table to pressure medium, drive flow regulator to regulate the flow of tested media to rate-of flow setting table
First value, drive heater or refrigerator, and the temperature combining temperature sensor regulation tested media set to medium temperature
Determine first value of table；
3rd step, software control system sets first value of table according to aperture, drives servomotor by motion control card, makes
Obtaining ball valve to be measured and automatically running to the position of the opening value specified, open position data are given motion by rotary encoder closed loop feedback
Control card, the upstream pressure sensor of ball valve now to be tested is tested and recorded to software control system driving data capture card automatically
Flow value with the flow sensor before the force value of downstream pressure sensor and ball valve to be tested；
4th step, software control system sets second value of table according to aperture, drives servomotor by motion control card, makes
Obtain ball valve to be measured and then automatically run to the position of second opening value specified, and be repeated in analogizing, until ball valve to be measured
Automatically run to the position of all opening values that aperture setting table is specified successively, reach each open position at ball valve to be measured simultaneously
After, upstream pressure sensor and the valve of ball valve now to be tested is tested and recorded to software control system driving data capture card automatically
The flow value of the flow sensor before the force value of rear pressure sensor and ball valve to be tested；
5th step, software control system regulates the pressure of tested media to pressure medium setting table by driving pressure regulator
Second value, and the like, until the pressure of regulation tested media is to last value of pressure medium setting table, and survey
The flow of examination medium and temperature keep constant, and repetition step 3 is to step 4, and software control system driving data capture card is automatic
Test and the record upstream pressure sensor of ball valve now to be tested and the force value of downstream pressure sensor and to be measured try
The flow value of the flow sensor before valve；
6th step, software control system regulates the flow of tested media to rate-of flow setting table by driving flow regulator
Second value, and the like, until the flow of regulation tested media is to last value of rate-of flow setting table, and survey
The pressure and temperature of examination medium keeps constant, and repetition step 3 is to step 4, and software control system driving data capture card is automatic
Test and the record upstream pressure sensor of ball valve now to be tested and the force value of downstream pressure sensor and to be measured try
The flow value of the flow sensor before valve；
7th step, software control system is passed through heater or refrigerator, and is combined the temperature of temperature sensor regulation tested media
To second value of medium temperature setting table, and the like, until the temperature of regulation tested media sets table to medium temperature
Last value, and the pressure of tested media and flow keep constant, repeat step 3 to step 4；Software control system is driven
The upstream pressure sensor of ball valve now to be tested and the pressure of downstream pressure sensor are tested and recorded to dynamic data collecting card automatically
The flow value of the flow sensor before force value and ball valve to be tested；
8th step, the tables of data of aperture, pressure, flow and temperature that software control system obtains according to test, automatically analyze simultaneously
Generate aperture and pressure characteristic, aperture and discharge characteristic, pressure and rating curve, the medium temperature of ball valve to be tested
With pressure characteristic and medium temperature and rating curve.
2. the method for testing of a kind of ball valve dynamic characteristic parameter according to claim 1, it is characterised in that: to Dead Zone
Automatically the test of dynamic characteristic parameter and analyzing, specifically includes following steps:
The first step, the open position arranging ball valve to be measured on the human-computer interaction interface of software control system is respectively maximum opening
The 25%th, 50% and 75%, and start test from aperture as the position of zero after setting media type；
Second step, software control system drives servomotor by motion control card so that ball valve to be measured is according to clockwise
Rotate to maximum opening the 25%th, 50% and 75% position, then software control system control ball valve to be measured is with maximum opening
The anglec of rotation of 0.1% increases aperture in the direction of the clock, and reads actual aperture change feedback by rotary encoder simultaneously
Value, until observing that an observable stroke aperture change occurs, software control system automatically records ball valve now to be measured and exists
The opening value having been rotated through under driven by servomotor；Then software control system drives ball valve to be measured according to direction counterclockwise,
The equally anglec of rotation with the 0.1% of maximum opening increases aperture counterclockwise, and is read real by rotary encoder simultaneously
The aperture change value of feedback on border, until observing that an observable aperture change occurs, software control system records this automatically
When the opening value that has been rotated through under driven by servomotor of ball valve to be measured；Two ball valves to be measured of above-mentioned record drive at servomotor
The difference of the opening value turning under Dong is ball valve to be measured at the 25%th, the 50% and dead band during 75% position of maximum opening；
3rd step, software control system, according to the tables of data testing the aperture obtaining and dead band, automatically analyzes and generates ball to be measured
The Dead Zone curve of valve.
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| CN108664756A (en) * | 2018-07-17 | 2018-10-16 | 浙江中石阀门有限公司 | There is the ball valve design method of Matheson and Dresser joint at a kind of both ends |
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| CN113984112B (en) * | 2021-09-30 | 2022-11-01 | 浙江大学台州研究院 | Intelligent automatic testing system for key part performance of toilet |
| CN116609052B (en) * | 2023-07-20 | 2023-09-26 | 天津银河阀门有限公司 | Butterfly valve operation data acquisition and analysis method based on wireless sensor |
| CN117232818B (en) * | 2023-11-10 | 2024-01-30 | 上海开维喜阀门有限公司 | Disk valve thermal state performance test device and test method |
| CN117232819B (en) * | 2023-11-16 | 2024-01-26 | 湖南大用环保科技有限公司 | Valve body comprehensive performance test system based on data analysis |
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| CN104295561A (en) * | 2014-10-15 | 2015-01-21 | 上海徽封机电设备有限公司 | Proportional servo valve testing system and testing method thereof |
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