CN109899586A - A kind of digital type intelligent valve positioner - Google Patents
A kind of digital type intelligent valve positioner Download PDFInfo
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- CN109899586A CN109899586A CN201910225732.3A CN201910225732A CN109899586A CN 109899586 A CN109899586 A CN 109899586A CN 201910225732 A CN201910225732 A CN 201910225732A CN 109899586 A CN109899586 A CN 109899586A
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Abstract
The invention discloses a kind of digital type intelligent valve positioners, more particularly to process industry intelligentized control method field, including pneumatic control valve, the pneumatic control valve, the pneumatic control valve includes cylinder body, and the cylinder interior both ends are equipped with mechanical position limitation, and the cylinder interior slidably connects valve rod, the first air source inlet is equipped at the top of the cylinder body, the cylinder base is equipped with the second air source inlet.The present invention cooperates microprocessor work by the first piezo electric valve and the second piezo electric valve, CPU is respectively in two mechanical position limitation memory dead-center positions and 100% position, and averaging signals are carried out according to preset accuracy class, and remember averaging signals quantity, realize the positioning of valve rod self-act travel, send digital signal, mention high control precision, structure is simple, convenient for safeguarding, and the guarantor position of valve rod is realized by protecting position valve, gas consumption is not needed other than work, it is energy saving, and power off or die can choose and protect position or reset, energy conservation and environmental protection.
Description
Technical field
The present invention relates to process industry intelligentized control method fields, it is more particularly related to a kind of digital intelligent
Type valve positioner.
Background technique
Intelligent valve positioner, also known as pneumatic positioner valve are the main accessories of regulating valve, usually and pneumatic control valve
It matches, it receives the output signal of adjuster, then pneumatic control valve is controlled with its output signal area, when adjusting valve actuation
After work, further through mechanical device feedback to valve positioner, valve position state is transmitted to Upper system by electric signal for the displacement of valve rod.
What valve positioner currently on the market mostly used is nozzle flapper type valve positioner, and principle is by will be upper
The analog signal of position machine is converted into air pressure signal, and air pressure signal is believed by the transmission mechanism and valve position feedback of nozzle flapper and complexity
Number it is connected, achievees the purpose that adjusting, its structure is complicated, and principle seeks to keep valve position by persistently spraying corresponding gas,
It cannot achieve the purpose for protecting position when gas source interrupts, while air consumption is also big.
Nozzle flapper type valve positioner just needs to continue compressed gas consuming when working, and can only reset after dying,
It can not achieve realization power-off and protect position and reset function, need to continue compressed gas consuming, cause the waste of resource, not environmentally friendly,
And in addition higher cost, guarantor position must increase solenoid valve block and just be able to achieve.
Summary of the invention
In order to overcome the drawbacks described above of the prior art, the embodiment of the present invention provides a kind of digital type intelligent valve positioning
Device cooperates microprocessor work by the first piezo electric valve and the second piezo electric valve, and CPU remembers zero point position in two mechanical position limitations respectively
Set with 100% position, and averaging signals are carried out according to preset accuracy class, and remember averaging signals quantity, realize valve rod
Self-act travel positioning, sends digital signal, mentions high control precision, and structure is simple, convenient for safeguarding, realizes valve rod by protecting position valve
Position is protected, does not need gas consumption other than work, it is energy saving, and power off or die can choose and protect position or reset, energy-saving ring
It protects.
To achieve the above object, the invention provides the following technical scheme: a kind of digital type intelligent valve positioner, including
Pneumatic control valve, the pneumatic control valve, the pneumatic control valve include cylinder body, and the cylinder interior both ends are equipped with mechanical limit
Position, the cylinder interior slidably connect valve rod, are equipped with the first air source inlet at the top of the cylinder body, and the cylinder base is equipped with the
Two air source inlets, the cylinder body side are equipped with source outlet, and the connecting pin of the pneumatic control valve, which is equipped with, protects position valve, and described first
Air source inlet side is equipped with the first piezo electric valve, and second air source inlet side is equipped with the second piezo electric valve, the pneumatic control valve
Source outlet at be equipped with valve rod feedback mechanism, the connecting pin of the valve rod feedback mechanism is equipped with position feedback transducer, described
The connecting pin of position feedback transducer is equipped with microprocessor, and the connecting pin of the microprocessor is equipped with host computer and pneumatic execution machine
Structure is connected with equipment detection module, first piezo electric valve and the second piezoelectricity between the pneumatic actuator and microprocessor
Valve is electrically connected with pneumatic actuator.
In a preferred embodiment, the host computer includes display screen, the first alarm device and the second alarm device, institute
Display screen is stated for showing that the movement position of each components running parameter and valve rod, first alarm device are used for pneumatic control valve
The alarm of jamming failure, second alarm device are used for the alarm of pneumatic actuator job failure.
In a preferred embodiment, input module and receiving module, the input are equipped with inside the host computer
Module is used for input service signal, and the receiving module with microprocessor intelligence for interacting, the host computer and microprocessor
It is electrically connected.
In a preferred embodiment, temperature sensor, baroceptor are equipped with inside the equipment detection module
And voltage sensor, the temperature sensor, baroceptor and voltage sensor are respectively used to sensing pneumatic actuator and exist
Occur temperature, air pressure and voltage signal in the course of work, and sensing signal is sent to and can be compared to microprocessor analysis, when depositing
In abnormal signal, microprocessor controls the second alarm device and provides alarm signal.
In a preferred embodiment, the microprocessor internal is equipped with counting module, and the counting module is used for
The work times of record position feedback transducer count the on-off times of pneumatic actuator, and calculate valve rod total displacement with this.
In a preferred embodiment, the first piezo electric valve input terminal matches with the first air source inlet, described
Second piezo electric valve input terminal matches with the second air source inlet, and the valve rod feedback mechanism matches with source outlet.
In a preferred embodiment, the position feedback transducer selects photoelectric sensor, and position feedback passes
Sensor is non-contact sensor monitoring, and the microprocessor selects CPU.
In a preferred embodiment, the input terminal of the microprocessor is equipped with A/D converter, the microprocessor
Output end be equipped with D/A converter, the position feedback transducer, temperature sensor, baroceptor and voltage sensor are equal
It is electrically connected with A/D converter, first alarm device and the second alarm device are electrically connected with D/A converter.
In a preferred embodiment, the connecting pin of the pneumatic actuator be equipped with I/P converter, described first
Piezo electric valve, the second piezo electric valve and guarantor's position valve are electrically connected with I/P converter.
Technical effect and advantage of the invention:
1, microprocessor work is cooperated by the first piezo electric valve and the second piezo electric valve, CPU remembers in two mechanical position limitations respectively
Recall dead-center position and 100% position, and averaging signals carried out according to preset accuracy class, and remember averaging signals quantity,
It realizes the positioning of valve rod self-act travel, sends digital signal, mention high control precision, structure is simple, and it is convenient for safeguarding, it is real by protecting position valve
The guarantor position of existing valve rod, does not need gas consumption other than work, energy saving, and powers off or die can choose and protect position or multiple
Position, energy conservation and environmental protection；
2, by position feedback transducer by stem position signal send microprocessor, and with host computer input signal ratio
Right, when data deviation is greater than the set value, microprocessor controls the alarm of the first alarm device, prompts pneumatic control valve jamming failure,
And show card resistance position in display screen, realize the diagnosis of valve card resistance, temperature sensor, baroceptor and voltage sensor are matched
It closes microprocessor to be monitored pneumatic actuator, when there are abnormal signal, microprocessor controls the second alarm device and provides
Alarm signal realizes actuator self diagnosis, is conducive to the safe handling of device；
3, by high-frequency may be implemented and open using the first piezo electric valve and the second piezo electric valve as the control valve of control gas
Pass can be up to 1000 unlatchings, the work times of counting module record position feedback transducer per minute, and statistics is pneumatically held
The on-off times of row mechanism, and valve rod total displacement is calculated with this, it realizes all-digitized demodulator, mentions high control precision, can select often
It opens and protects position and reset with normally closed mode, realization power-off, using photoelectric sensor, non-contact sensor, feedback is digital signal,
Convenient for control.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
Fig. 2 is the cross-sectional view of pneumatic control valve of the present invention.
Fig. 3 is System Control Figure of the invention.
Appended drawing reference are as follows: position valve, 3 first piezo electric valves, 4 second piezoelectricity are protected in 1 pneumatic control valve, 101 cylinder bodies, 102 valve rods, 2
Valve, 5 valve rod feedback mechanisms, 6 position feedback transducers, 7 microprocessors, 8 host computers, 9 pneumatic actuators, 10 equipment detect mould
Block, 11 display screens, 12 first alarm devices, 13 second alarm devices.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of digital type intelligent valve positioner according to shown in Fig. 1-3, including pneumatic control valve 1, the pneumatic tune
Valve 1 is saved, the pneumatic control valve 1 includes cylinder body 101, and the 101 inside both ends of cylinder body are equipped with mechanical position limitation, the cylinder body
101 internal slides are connected with valve rod 102, are equipped with the first air source inlet at the top of the cylinder body 101,101 bottom of cylinder body is equipped with
Second air source inlet, 101 side of cylinder body are equipped with source outlet, and the connecting pin of the pneumatic control valve 1, which is equipped with, protects position valve 2,
First air source inlet side is equipped with the first piezo electric valve 3, and second air source inlet side is equipped with the second piezo electric valve 4, described
Valve rod feedback mechanism 5 is equipped at the source outlet of pneumatic control valve 1, it is anti-that the connecting pin of the valve rod feedback mechanism 5 is equipped with position
The connecting pin of infeed sensor device 6, the position feedback transducer 6 is equipped with microprocessor 7, and the connecting pin of the microprocessor 7 is equipped with
Host computer 8 and pneumatic actuator 9 are connected with equipment detection module 10 between the pneumatic actuator 9 and microprocessor 7,
First piezo electric valve 3 and the second piezo electric valve 4 are electrically connected with pneumatic actuator 9；
Signal is sent to pneumatic actuator 9 by microprocessor 7, the first piezo electric valve 3 of control is opened, the first air source inlet
Air inlet moves down valve rod 102, and when reaching mechanical position limitation under cylinder body 101, position feedback transducer 6 stops operating, the first piezo electric valve
3 close, and at this moment feed back to microprocessor 7 without turn signal, and CPU remembers dead-center position at this time, while the second piezo electric valve 4 is beaten
It opens, the second air source inlet air inlet moves up valve rod 102, and when reaching mechanical position limitation on cylinder body 101, position feedback transducer 6 stops
Rotation, the second piezo electric valve 4 are closed, and CPU remembers 100% position, and microprocessor 7 is respectively believed according to preset accuracy class
Number, and remember averaging signals quantity, and realize the positioning of 102 self-act travel of valve rod, structure is simple, and it is convenient for safeguarding, it is real by protecting position valve 2
The guarantor position of existing valve rod 102, does not need gas consumption other than work, energy saving, and power off or die can choose guarantor position or
It resets, energy conservation and environmental protection.
Embodiment 2:
A kind of digital type intelligent valve positioner according to shown in Fig. 1-3, the host computer 8 include display screen 11, the
One alarm device 12 and the second alarm device 13, the display screen 11 are used to show the movement of each components running parameter and valve rod 102
Position, first alarm device 12 are used for the alarm of 1 jamming failure of pneumatic control valve, and second alarm device 13 is for pneumatically holding
Stem position signal is sent microprocessor 7 by the alarm of 9 job failure of row mechanism, position feedback transducer 6, and defeated with host computer
Enter signal fusing, when data deviation is greater than the set value, microprocessor 7 controls the alarm of the first alarm device 12, prompts pneumatic adjust
1 jamming failure of valve, and card resistance position is shown in display screen 11, realize the diagnosis of valve card resistance；
Further, input module and receiving module are equipped with inside the host computer 8, the input module is for inputting work
Make signal, the receiving module is used to be electrically connected with 7 intelligent interaction of microprocessor, the host computer 8 with microprocessor 7；
Further, temperature sensor, baroceptor and voltage sensor are equipped with inside the equipment detection module 10,
The temperature sensor, baroceptor and voltage sensor are respectively used to sensing pneumatic actuator 9 and go out during the work time
Existing temperature, air pressure and voltage signal, and sensing signal is sent to and can be analysed and compared to microprocessor 7, when there are abnormal signals
When, microprocessor 7 controls the second alarm device 13 and provides alarm signal, realizes actuator self diagnosis, is conducive to the safety of device
It uses；
Further, counting module is equipped with inside the microprocessor 7, the counting module is passed for record position feedback
The work times of sensor, count the on-off times of pneumatic actuator 9, and calculate 102 total displacement of valve rod with this, using the first pressure
The control valve of electric valve 3 and the second piezo electric valve 4 as control gas, may be implemented that 1000 can be up in high-frequency switch one minute
Secondary unlatching realizes all-digitized demodulator, mentions high control precision, can select normally opened and normally closed mode, realizes that position and again is protected in power-off
Position；
Further, 3 input terminal of the first piezo electric valve matches with the first air source inlet, and second piezo electric valve 4 is defeated
Enter end to match with the second air source inlet, the valve rod feedback mechanism 5 matches with source outlet；
Further, the position feedback transducer 6 selects photoelectric sensor, and position feedback transducer 6 is non-contact
Formula sensor monitoring, the microprocessor 7 select CPU, feedback digital signal, convenient for control；
Further, the input terminal of the microprocessor 7 is equipped with A/D converter, and the output end of the microprocessor 7 is equipped with
D/A converter, the position feedback transducer 6, temperature sensor, baroceptor and voltage sensor are and A/D converter
It is electrically connected, first alarm device 12 and the second alarm device 13 are electrically connected with D/A converter；
Further, the connecting pin of the pneumatic actuator 9 is equipped with I/P converter, first piezo electric valve 3, second
Piezo electric valve 4 and guarantor's position valve 2 are electrically connected with I/P converter；
Further, the model of the position feedback transducer 6 is set as NCB2-V3 type position feedback transducer, described
The model of temperature sensor is set as DS18B20 TO-92 type temperature sensor, and the model of the baroceptor is set as
PTG500 type baroceptor, the model of the voltage sensor are set as YN194-7BO type voltage sensor.
Working principle of the present invention:
Referring to Figure of description 1-3, after locator is installed, by pressing scan button, locator enters initial
Change stage, microprocessor 7 send signal to pneumatic actuator 9, and the first piezo electric valve 3 of control is opened, the first air source inlet air inlet,
Move down valve rod 102, when reaching mechanical position limitation under cylinder body 101, position feedback transducer 6 stops operating, and the first piezo electric valve 3 closes
It closing, at this moment feeds back to microprocessor 7 without turn signal, CPU remembers dead-center position at this time, while the second piezo electric valve 4 is opened, the
Two air source inlet air inlets, move up valve rod 102, and when reaching mechanical position limitation on cylinder body 101, position feedback transducer 6 stops operating,
Second piezo electric valve 4 is closed, and CPU remembers 100% position, and microprocessor 7 carries out averaging signals according to preset accuracy class, and
To remember averaging signals quantity, realizes the positioning of 102 self-act travel of valve rod, structure is simple, and it is convenient for safeguarding, valve is realized by protecting position valve 2
The guarantor position of bar 102, does not need gas consumption other than work, energy saving, and powers off or die can choose and protect position or reset,
Energy conservation and environmental protection；
Referring to Figure of description 3, stem position signal is sent microprocessor 7, and and host computer by position feedback transducer 6
Input signal compares, and when data deviation is greater than the set value, microprocessor 7 controls the alarm of the first alarm device 12, prompts pneumatic adjust
1 jamming failure of valve is saved, and card resistance position is shown in display screen 11, realizes the diagnosis of valve card resistance, temperature sensor, air pressure sensing
Device and voltage sensor cooperation microprocessor 7 are monitored pneumatic actuator 9, when there are abnormal signal, microprocessor 7
It controls the second alarm device 13 and provides alarm signal, realize actuator self diagnosis, be conducive to the safe handling of device；
Control valve referring to Figure of description 1 and 3, using the first piezo electric valve 3 and the second piezo electric valve 4 as control gas
Door, may be implemented the unlatching that high-frequency switch can be up to 1000 times for one minute, counting module record position feedback transducer 6
Work times count the on-off times of pneumatic actuator 9, and calculate 102 total displacement of valve rod with this, realize all-digitized demodulator,
High control precision is mentioned, normally opened and normally closed mode can be selected, realizes that position and reset are protected in power-off, it is non-contact using photoelectric sensor
Formula sensing, feedback is digital signal, convenient for control.
The several points that should finally illustrate are: firstly, in the description of the present application, it should be noted that unless otherwise prescribed and
It limits, term " installation ", " connected ", " connection " shall be understood in a broad sense, can be mechanical connection or electrical connection, be also possible to two
Connection inside element, can be directly connected, and "upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when
The absolute position for being described object changes, then relative positional relationship may change；
Secondly: the present invention discloses in embodiment attached drawing, relates only to the structure being related to the embodiment of the present disclosure, other knots
Structure, which can refer to, to be commonly designed, and under not conflict situations, the same embodiment of the present invention and different embodiments be can be combined with each other；
Last: the foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, all in the present invention
Spirit and principle within, any modification, equivalent replacement, improvement and so on, should be included in protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of digital type intelligent valve positioner, including pneumatic control valve (1), it is characterised in that: the pneumatic control valve
(1), the pneumatic control valve (1) includes cylinder body (101), and the internal both ends of the cylinder body (101) are equipped with mechanical position limitation, the cylinder
Body (101) internal slide is connected with valve rod (102), and the first air source inlet, the cylinder body are equipped at the top of the cylinder body (101)
(101) bottom is equipped with the second air source inlet, and cylinder body (101) side is equipped with source outlet, the company of the pneumatic control valve (1)
It connects end and is equipped with guarantor position valve (2), first air source inlet side is equipped with the first piezo electric valve (3), second air source inlet side
Equipped with the second piezo electric valve (4), valve rod feedback mechanism (5) are equipped at the source outlet of the pneumatic control valve (1), the valve rod is anti-
The connecting pin for presenting mechanism (5) is equipped with position feedback transducer (6), and the connecting pin of the position feedback transducer (6) is equipped with micro- place
It manages device (7), the connecting pin of the microprocessor (7) is equipped with host computer (8) and pneumatic actuator (9), the pneumatic execution machine
It is connected between structure (9) and microprocessor (7) equipment detection module (10), first piezo electric valve (3) and the second piezo electric valve (4)
It is electrically connected with pneumatic actuator (9).
2. a kind of digital type intelligent valve positioner according to claim 1, it is characterised in that: the host computer (8)
Including display screen (11), the first alarm device (12) and the second alarm device (13), the display screen (11) is for showing each components
The movement position of running parameter and valve rod (102), first alarm device (12) are used for the report of pneumatic control valve (1) jamming failure
Alert, second alarm device (13) is used for the alarm of locator (9) job failure.
3. a kind of digital type intelligent valve positioner according to claim 1, it is characterised in that: the host computer (8)
Inside be equipped with input module and receiving module, the input module be used for input service signal, the receiving module be used for it is micro-
Processor (7) intelligent interaction, the host computer (8) and microprocessor (7) are electrically connected.
4. a kind of digital type intelligent valve positioner according to claim 2, it is characterised in that: the equipment detects mould
Temperature sensor, baroceptor and voltage sensor, the temperature sensor, baroceptor and electricity are equipped with inside block (10)
Pressure sensor is respectively used to sensing pneumatic actuator (9) and occurs temperature, air pressure and voltage signal during the work time, and will sense
It surveys signal and is sent to and can analyse and compare to microprocessor (7), when there are abnormal signal, microprocessor (7) controls the second alarm
Device (13) provides alarm signal.
5. a kind of digital type intelligent valve positioner according to claim 1, it is characterised in that: the microprocessor
(7) internal to be equipped with counting module, the counting module is used for the work times of record position feedback transducer, counts pneumatic and executes
The on-off times of mechanism (9), and valve rod (102) total displacement is calculated with this.
6. a kind of digital type intelligent valve positioner according to claim 1, it is characterised in that: first piezo electric valve
(3) input terminal matches with the first air source inlet, and the second piezo electric valve (4) input terminal matches with the second air source inlet, institute
Valve rod feedback mechanism (5) is stated to match with source outlet.
7. a kind of digital type intelligent valve positioner according to claim 1, it is characterised in that: the position feedback passes
Sensor (6) selects photoelectric sensor, and position feedback transducer (6) is non-contact sensor monitoring, microprocessor (7) choosing
Use CPU.
8. a kind of digital type intelligent valve positioner according to claim 2, it is characterised in that: the microprocessor
(7) input terminal is equipped with A/D converter, and the output end of the microprocessor (7) is equipped with D/A converter, and the position feedback passes
Sensor (6), temperature sensor, baroceptor and voltage sensor are electrically connected with A/D converter, first alarm device
(12) it is electrically connected with D/A converter with the second alarm device (13).
9. a kind of digital type intelligent valve positioner according to claim 1, it is characterised in that: the pneumatic execution machine
The connecting pin of structure (9) is equipped with I/P converter, and first piezo electric valve (3), the second piezo electric valve (4) He Baowei valve (2) are and I/P
Converter is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225732.3A CN109899586B (en) | 2019-03-22 | 2019-03-22 | Digital intelligent valve positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225732.3A CN109899586B (en) | 2019-03-22 | 2019-03-22 | Digital intelligent valve positioner |
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| Publication Number | Publication Date |
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| CN109899586A true CN109899586A (en) | 2019-06-18 |
| CN109899586B CN109899586B (en) | 2020-06-16 |
Family
ID=66953480
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910225732.3A Active CN109899586B (en) | 2019-03-22 | 2019-03-22 | Digital intelligent valve positioner |
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| CN113932057A (en) * | 2021-11-23 | 2022-01-14 | 国家能源集团内蒙古电力有限公司 | Valve control system, method and device and electronic equipment |
| CN114060603A (en) * | 2021-11-30 | 2022-02-18 | 重庆川仪自动化股份有限公司 | Fault judgment method for regulating valve |
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| CN114060603B (en) * | 2021-11-30 | 2024-04-12 | 重庆川仪自动化股份有限公司 | Fault judging method of regulating valve |
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| CN109899586B (en) | 2020-06-16 |
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