CN106763977A - A kind of anti-tampering intelligent valve positioner - Google Patents
A kind of anti-tampering intelligent valve positioner Download PDFInfo
- Publication number
- CN106763977A CN106763977A CN201611089721.XA CN201611089721A CN106763977A CN 106763977 A CN106763977 A CN 106763977A CN 201611089721 A CN201611089721 A CN 201611089721A CN 106763977 A CN106763977 A CN 106763977A
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- Prior art keywords
- valve positioner
- intelligent valve
- circuit
- tampering
- positioner according
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention discloses a kind of anti-tampering intelligent valve positioner, including：Electropneumatic transducer；Circuit controling assembly；Displacement detecting feedback unit；Electropneumatic transducer includes pneumatic amplifier, the nozzle of the back pressure mouthful for being arranged on pneumatic amplifier and the nozzle baffle plate for covering and the electromagnetic drive mechanism for driving baffle plate and the right size of nozzle cover, and electromagnetic drive mechanism is controlled by the current controling signal that circuit controling assembly sends；The air inlet of pneumatic amplifier is provided with miniature decompression valuator, and miniature decompression valuator includes permanent throttling screw and the relief spring and sealing ring that are enclosed within permanent throttling screw, and perseverance throttling screw coordinates with the constant throttling orifice that pneumatic amplifier is provided with.The anti-tampering intelligent valve positioner of the present invention, the features such as with anti-source of the gas fluctuation interference, anti-vibration interference, anti-electromagnetic interference, reliability and position stability of the locator under complex jamming operating mode are can effectively ensure that, it is stable and reliable for performance, be conducive to market-oriented popularization.
Description
Technical field
The present invention relates to pneumatic valve adjusting device field, and in particular to a kind of anti-tampering intelligent valve positioner.
Background technology
Locator is the important control annex of regulating valve, and intelligent valve positioner mainly includes signal processing unit and valve
Door position feedback unit (hereinafter referred to as valve position feedback unit) two parts.The outside framing signal of signal processing unit reception (such as 4~
20mA current signals, HART data signals etc.), and the valve current location sampled signal provided according to valve position feedback unit, meter
Output driving electric signal is calculated, corresponding pneumatic signal is converted into by I/P converting units, drive regulating valve motion, regulating valve position
The change put is perceived by valve position feedback unit again, gathers valve position signal in real time by system and feed back to signal processing unit
Row treatment.
At present both at home and abroad it is main with Siemens, Shan Wudeng companies product as representative, these locator one kind are based on non-
The piezoelectricity valve technology of the piezoelectricity back wash effect material of symmetric construction crystal, a kind of is the air-blast atomizer/baffle plate skill based on electromagnetic technique
Art.The former is limited mostly using the piezoelectricity from Germany He Erbige (hoerbiger) automation technology corporation by piezo technology
Valve, cost etc. are uncontrollable, and piezo electric valve is easily damaged and cannot repair to source of the gas requirement height.So in order to reduces cost lifting is competing
Power is striven, the locator of the brand-new reliable nozzle flapper know-why of design, the type of skill locator is all independently to grind entirely substantially
Hair, the reliability done extremely is not easy.The present invention is exactly nozzle flapper technical intelligence type locator, especially has all at anti-interference aspect
Many reliability designs, have certain advantage compared to conventional spout baffle plate locator.
The industry-by-industries such as the multiplex chemical industry of locator, coal, oil, onsite application environment is complicated, there are interference sources,
Such as electromagnetic interference, source of the gas erratic fluctuations is disturbed, vibration interference, and the unstable input of input current is excessive etc., and it is fixed to influence whether
The using effect and reliability of position device, serious meeting cause locator to damage.
Application publication number is public for the Chinese invention patent application of CN103727283A (Application No. 201310653132.X)
A kind of valve positioner is driven, including housing, rotation are arranged at the valve shaft lever in described housing, the lower end of described valve shaft lever
Portion is connected with the Pneumatic assembly and detection for driving it to rotate through the bottom of described housing, the upper end of described valve shaft lever
The stroke detection sensor of its rotational angle, offers air pressure input port and air pressure outlet, institute respectively on described housing
Master control borad, electropneumatic transducer and pressure sensor are provided with the housing stated, described master control borad is provided with governor circuit, institute
The air pressure input port described in electropneumatic transducer connection stated, the described air pressure outlet of described Pneumatic assembly connection, described pressure
Force snesor is connected with described Pneumatic assembly and described master control borad respectively, described electropneumatic transducer respectively with it is described
Master control borad and described Pneumatic assembly be connected, described stroke detection sensor is connected with described master control borad, institute
The housing stated is wrapped with stainless steel layer.The stainless steel layer improves the case hardness of the intelligent valve positioner, plays protection
Effect, while electromagnetic interference of the environment to internal component can be reduced, with capability of fast response and control accuracy higher.
The content of the invention
The invention provides a kind of anti-tampering intelligent valve positioner, disturbed with anti-source of the gas fluctuation interference, anti-vibration,
The features such as anti-electromagnetic interference, can effectively ensure that reliability and position stability of the locator under complex jamming operating mode.
A kind of anti-tampering intelligent valve positioner, including：
Electropneumatic transducer, the gas circuit end of the electropneumatic transducer is used to be connected with valve actuator；
The circuit controling assembly being connected with the circuit end of the electropneumatic transducer；
The displacement detecting feedback unit being connected with the circuit controling assembly；
Described electropneumatic transducer include pneumatic amplifier, be arranged on the pneumatic amplifier back pressure mouthful nozzle (i.e.
The gas circuit control signal of pneumatic amplifier) and the baffle plate that covers of the nozzle and drive the baffle plate right with nozzle cover
The electromagnetic drive mechanism of size, described electromagnetic drive mechanism is controlled by the current control letter that the circuit controling assembly sends
Number；
The air inlet of described pneumatic amplifier is provided with miniature decompression valuator, and described miniature decompression valuator includes
Perseverance throttling screw and the relief spring and sealing ring that are enclosed within the permanent throttling screw, described permanent throttling screw and the gas
The constant throttling orifice that dynamic amplifier is provided with coordinates.
In the present invention, miniature decompression valuator can effectively prevent the locator erratic shifts that source of the gas wave zone comes from asking
Topic.The miniature decompression valuator is made up of the permanent throttling screw with gas throttling buck functionality, relief spring, sealing ring
Micro device, the characteristics of be integrated with pressure-reducing valve and throttling pressure stabilizing device, and volume is very small, is not take up unnecessary design space,
And can conveniently screw out and replace, the dust granules in source of the gas pollution compressed air can be convenient in the case of blocking at the scene
Replace, improve maintenance efficiency and reduce maintenance cost.The situation that source of the gas is extremely unstable at the scene or even preposition pressure-reducing valve is damaged
Lower relief spring can be input into source of the gas in reasonable working pressure range, so as to protect with a certain degree of preposition pressure reducing protection locator
Card source of the gas stablizes pulsation-free being input in the gap of pneumatic actuator inner cylinders and nozzle flapper, it is possible to achieve locator is fixed
Position stabilization is without drift.
It is following as the preferred technical solution of the present invention：
Described electromagnetic drive mechanism includes：Two groups of symmetrical electromagnet and it is arranged on two groups of symmetrical electromagnet
Middle dynamic iron, the dynamic iron is connected with the baffle plate.
Described electromagnet includes coil and permanent magnet.
The gravity axis of described dynamic iron is provided with fulcrum shaft, and the baffle plate is under the drive of the dynamic iron around the fulcrum shaft
Rotate, so that controlling baffle plate and the right size of nozzle cover.The overall symmetrical structure using principle is designed, particularly fulcrum shaft with
Dynamic iron gravity axis is completely the same, even if also not producing turning moment plus vibration, therefore is worked under the conditions of dither, also can
The output stablized.
Described displacement detecting feedback unit includes：The feedback rod being connected with valve and the feedback of feedback rod connection
Axle and the displacement transducer of the resetting shaft side is arranged on, the resetting shaft is provided with driving gear, institute's displacement sensors
It is provided with the driven gear coordinated with the driving gear so that displacement transducer obtains displacement signal.
Mechanical grip blank compensation apparatus, described mechanical grip blank compensation apparatus bag are installed on described resetting shaft
Include circular base, the mounting hole being radially arranged along the circular base and the setting peace being set on the resetting shaft
Spring assembly in dress hole for being held out against to the resetting shaft.
Described spring assembly includes the steel ball of the bar portion screw thread cooperation of set screw and the set screw and is arranged
In the compression spring of the bar portion of the set screw, one end of described compression spring is withstood on the steel ball, described compression
The other end of spring is withstood on the circular base, and described steel ball is withstood on described resetting shaft.The initial compression force of spring
Can be adjusted by set screw.
Further preferably, described spring assembly is three, is evenly distributed on the circular base into 120 degree.
In the displacement detecting feedback unit, the device is under the operating mode of long-time frequent vibration there may be small
Gap, now 3 in blank compensation apparatus are into 120 degree of equally distributed counterbalance spring meeting autobalance adjustment gaps, and pass through
Steel ball haptic feedback axle, and 3 initial compression forces of counterbalance spring can be adjusted by set screw.The device can be as far as possible
Reduce positioning precision error caused by locator gap error.
In the displacement detecting feedback unit, displacement transducer uses the resistance-type partial pressure sensor of good in anti-interference performance,
All have great advantage in terms of diamagnetic field interference and reliability compared to traditional magneto-dependent sensor.
The circuit controling assembly includes cpu control circuit plate and the LCD display electricity being connected with the cpu control circuit plate
Road plate, electric current input protection circuit, power circuit, sample circuit, circuit driven by electromagnetic means are provided with the cpu control circuit plate
Deng.
The diode for being provided with three one-way conductions of series connection in the positive terminal of the signal input of the cpu control circuit plate is anti-
Protection circuit is connect, two groups of voltage-regulator diodes dual voltage-stabilizing protection electricity in parallel is provided with the rear end of described cpu control circuit plate
Road.Multiple protective is done in input, even if there is one or two protection diode damage to burn still can ensure in signal reversal connection
In the case of be not turned on whole circuit, so as to being protected to whole circuit.Rear end also has two groups of voltage-regulator diodes in parallel
Dual protective circuit of voltage regulation, though input current be more than 40 times of maximum rated input current in the case of, the mu balanced circuit according to
Can so make rear end main control circuit stabilization 7.5V, while sample circuit stabilization 3.3V normal working voltage, significantly
Increased the reliability that uses of product under electric current input abnormal conditions.The protection circuit is used in intrinsic safe explosion-proof circuit design,
The various electrical reliabilities experiment of national instrument and meter supervision and inspection on safety station (NEPSI) is had already been through at present, meets this
Peace requirement of explosion proof, certification of conformity of an instrument for explosive atmosphere number：GYB16.1817X.
Described anti-tampering intelligent valve positioner, also includes：Housing unit, described housing unit include upper lid and
Lower house, electromagnetic interference shield paint is sprayed with inside the upper lid and lower house, and the electropneumatic transducer and circuit controling assembly set
Put in the housing unit, can effectively stop coil magnetic field and circuit of the electromagnetic interference in external environment to locator
Etc. the influence for causing.The structure of the upper lid intermediate tie transparent window is using the concave structure design sunk, it is to avoid foreign object is touched
Hit and cause transparent window to damage.
Experiment is influenceed by the external magnetic field in JB/T7368-1994 standards, is 50Hz in frequency, intensity is 400A/m's
Under external magnetic field, in the phase and direction of maximum effect, the change of its stroke does not surpass the intelligent valve positioner that the present invention is given
Cross the absolute value 0.5% of elementary error.
Compared with prior art, the invention has the advantages that：
The intelligent valve positioner that the present invention is given includes the electropneumatic transducer with miniature decompression valuator, anti-electromagnetism
The resistance-type displacement detecting feedback unit of interference, and the displacement detecting feedback unit carries mechanical grip blank compensation apparatus, should
Device can be compensated and buffered under the operating mode of long-time frequent vibration to the minim gap of generation, it is to avoid sensor gap
The inaccurate problem of positioning caused by error.The anti-tampering intelligent valve positioner of the present invention, fluctuates with anti-source of the gas and disturbs, antivibration
The features such as dynamic interference, anti-electromagnetic interference, can effectively ensure that reliability of the locator under complex jamming operating mode and positioning are steady
It is qualitative.The anti-tampering intelligent valve positioner of the present invention is stable and reliable for performance, is conducive to market-oriented popularization.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of the anti-tampering intelligent valve positioner of the present invention；
Fig. 2 is the structural representation of electropneumatic transducer in the present invention；
Fig. 3 is the structural representation of pneumatic amplifier in the present invention；
Fig. 4 is the structural representation of mechanical grip blank compensation apparatus and displacement transducer in the present invention；
Fig. 5 is the circuit diagram of cpu control circuit plate electric current input protection in the present invention；
Wherein, cover on 1,2 electromagnetic interference shield paints, 3 pneumatic amplifiers, 4 baffle plates, 5 transparent windows, 6 nozzles, 7LCD shows
Circuit board, 8CPU control boards, 9 plastic protection covers, 10 supports, 11 mechanical grip blank compensation apparatus, 12 displacement transducers,
13 resetting shafts, 14 feedback rods, 15 coils, 16 dynamic iron, 17 permanent magnets, 18 lower houses, 19 fulcrum shafts, 20 constant throttling orifice screws, 21
Sealing ring, 22 relief springs, 23 clamping screws, 24 driven gears, 25 driving gears, hexagonal set screw in 26,27 compensation bullets
Spring, 28 steel balls.
Specific embodiment
As shown in figure 1, a kind of anti-tampering intelligent valve positioner, including：
Electropneumatic transducer, the gas circuit end of electropneumatic transducer is used to be connected with valve actuator；
The circuit controling assembly being connected with the circuit end of electropneumatic transducer；
The displacement detecting feedback unit being connected with circuit controling assembly；
Electropneumatic transducer is covered including pneumatic amplifier 3, the nozzle 6 of the back pressure mouthful for being arranged on pneumatic amplifier 3 and nozzle 6
The baffle plate 4 and drive control baffle plate 4 of conjunction and the electromagnetic drive mechanism of degree of the covering size of nozzle 6, electromagnetic drive mechanism are controlled by
The current controling signal that circuit controling assembly sends.
As shown in Figure 1, 2, 3, the air inlet of pneumatic amplifier 3 is provided with miniature decompression valuator, miniature decompression valuator
Including perseverance throttling screw 20 and the relief spring 22 and sealing ring 21 that are enclosed within permanent throttling screw 20, perseverance throttling screw 20 and gas
The constant throttling orifice that dynamic amplifier 3 is provided with coordinates.
Electromagnetic drive mechanism includes：Two groups of symmetrical electromagnet and the dynamic iron being arranged in the middle of two groups of symmetrical electromagnet
16, the dynamic iron 16 is connected with baffle plate 4.Electromagnet includes coil 15 and permanent magnet 17.
The gravity axis of dynamic iron 16 is provided with fulcrum shaft 19, and baffle plate 4 is rotated under the drive of dynamic iron 16 around fulcrum shaft 19, so that
Controlling baffle plate 4 and degree of the covering size of nozzle 6.The overall symmetrical structure using principle is designed, particularly fulcrum shaft 19 and dynamic iron
16 gravity axis are completely the same, even if also not producing turning moment plus vibration, therefore worked under the conditions of dither, can also obtain
To the output of stabilization.
As Figure 1 and Figure 4, displacement detecting feedback unit includes：The feedback rod 14 and feedback rod being connected with valve rod
14 resetting shafts 13 for connecting and the displacement transducer 12 for being arranged on the side of resetting shaft 13, resetting shaft 13 are provided with driving gear 25,
Displacement transducer 12 is provided with the driven gear 24 coordinated with driving gear 25 so that displacement transducer 12 obtains displacement signal.
Mechanical grip blank compensation apparatus 11 are installed, mechanical grip blank compensation apparatus 11 include being arranged on resetting shaft 13
It is used for feedback in circular base on resetting shaft 13, the mounting hole being radially arranged along circular base and setting mounting hole
The spring assembly that axle 13 holds out against.
Spring assembly includes the steel of the bar portion screw thread cooperation of set screw (i.e. interior hexagonal set screw 26) and set screw
Pearl 28 and be set in set screw bar portion compression spring (i.e. counterbalance spring 27), one end of compression spring withstands on steel ball 28
On, the other end of compression spring is withstood on circular base, and steel ball 28 is withstood on resetting shaft 13.The initial compression force of compression spring can
Adjusted with by set screw.Spring assembly is three, is evenly distributed on circular base into 120 degree.Clamping screw 23 is used for
The reliability of displacement transducer 12 is fixed on lower house 18.
Displacement transducer 12 using good in anti-interference performance resistance-type partial pressure sensor, compared to traditional magneto-dependent sensor from anti-
Magnetic interference and reliability aspect all have great advantage.
As shown in Figure 1, shown in Figure 5, circuit controling assembly includes cpu control circuit plate 8 and LCD display circuit plate 7, CPU controls
The circuit of the electric current of circuit board 8 input protection, including the diode of one-way conduction is D18, D19, D20, resistance R58, the pole of voltage stabilizing two
Pipe D5, D6, D13, D14, three the two of the one-way conduction of series connection are provided with the positive terminal of the signal input of cpu control circuit plate 8
Pole pipe reverse-connection protection circuit, three diodes of the one-way conduction of series connection are D18, D19, D20, after cpu control circuit plate 8
End is provided with two groups of voltage-regulator diodes dual protective circuit of voltage regulation in parallel, two groups of voltage-regulator diodes in parallel are D5, D6, D13,
D14, wherein A anodes, K is negative electrode.Multiple protective is done in input, even if there is one or two protection diode damage to burn appointing so
Can ensure to be not turned on whole circuit in the case of signal reversal connection, so as to protect whole circuit.Rear end also has two
Group voltage-regulator diode dual protective circuit of voltage regulation in parallel, even if being more than 40 times of situations of maximum rated input current in input current
Under, the mu balanced circuit can still make the main control circuit stabilization of rear end in 7.5V, while sample circuit stabilization is 3.3V's
Normal working voltage, considerably increases the reliability that uses of product under electric current input abnormal conditions.
Anti-tampering intelligent valve positioner, also includes：Housing unit, housing unit includes upper lid 1 and lower house 18, under
Support 10 is fixed with housing 18, cpu control circuit plate 8 is installed over the mount 10, cpu control circuit plate 8 is connected by copper stud
Fixed LCD display circuit plate 7 is connect, coordinates the structure of transparent window 5 recessed using what is sunk in the middle of upper lid 1 with LCD display circuit plate 7
Face structure design, it is to avoid foreign object collision causes transparent window to damage.LCD display circuit plate 7 is equipped with plastic protection cover 9.The He of upper lid 1
Electromagnetic interference shield paint 2 is sprayed with inside lower house 18, electropneumatic transducer and circuit controling assembly are arranged in the housing unit,
The influence that electromagnetic interference in external environment is caused to coil magnetic field and circuit of locator etc. can effectively be stopped.
The operation principle of intelligent valve positioner of the invention is as follows：
When using when the increase of (4-20mA) current signal setting value is input into by LCD display circuit plate 7, now CPU controls
Circuit board processed 8 receives the duty setting signal of increase and by CPU calculation process output current to coil 15, the magnetic field of coil 15
Change, the dynamic iron 16 with fulcrum shaft 19 as fulcrum swings.With this action, the gap of baffle plate 4 and nozzle 6 is opened and (is covered
Degree changes), source of the gas is by the permanent throttling screw 20 in the miniature decompression valuator of the air inlet of pneumatic amplifier 3 and is enclosed within
Sprayed without fluctuation from nozzle stabilization after relief spring 22 and sealing ring 21 on perseverance throttling screw 20, back pressure declines in nozzle 6.This
When pneumatic amplifier 3 in valve element move and cause that source of the gas is entered by the gas circuit in the inner air path of pneumatic amplifier 3 and lower house 18
To in pneumatic actuator, actuator air pressure inside is raised, and valve movement is opened, valve rod with movement, valve rod and anti-
Feedback bar 14 is connected, and feedback rod 14 rotates certain angle, by resetting shaft 13 and the steel ball of mechanical grip blank compensation apparatus 11
28 and be set in after the compression spring of the bar portion of set screw filtering buffering it is uniform it is pulsation-free be delivered to displacement transducer 12,
The signal value of the detection sample shift of cpu control circuit plate 8 sensor 12 and the setting value of input are compared, at CPU computings
Reason constantly increases or reduces the size of current in coil 15, makes gap, the back pressure constantly regulate between the baffle plate 4 of nozzle 6, controls
Gas enters to deflate in actuator processed, and reciprocal said process makes setting value finally consistent with actual value.
In the present invention, in the intelligent valve positioner position stability test comparison data for whetheing there is miniature decompression valuator such as
Under：
First, drift experiment：
When input signal is the 50% of range, stroke value is recorded through 5min, 1h and 4h, calculate its stroke change percentage number
According to.
Result is as follows, without the elegant amount 1.1% of miniature decompression valuator stroke, there is the miniature elegant amount of decompression valuator stroke
0.5%.
2nd, bleed pressure change influence experiment：
1. by bleed pressure stabilization on rated value, input signal is range 50%, writes down stroke value；
2. change bleed pressure ± 10kPa respectively, stroke value is write down again；Calculate.
Result is as follows, without miniature decompression valuator stroke variable quantity 0.8%, there is miniature decompression valuator stroke variable quantity
0.3%.
The present invention is contrasted by with other brand like product vibration tests, and resistance to shock is good, and contrast test data are such as
Shown in table 1：
Table 1
| Intelligent valve positioner brand | Model | Resistance to shock |
| ABB | TZIDC | (80Hz/10g)≤± 1%FS |
| Wan Xun | MVP3300 | (15-150Hz/2g)≤± 0.5%FS |
| YTC | YT-3300 | (100Hz/6g)≤± 0.5%FS |
| (locator of the present invention) | IP4000 | (maximum 400Hz and 10g)≤0.5%FS |
The intelligent valve positioner that the present invention is given includes the electropneumatic transducer with miniature decompression valuator, anti-electromagnetism
The resistance-type displacement detecting feedback unit of interference, and the displacement detecting feedback unit carries mechanical grip blank compensation apparatus, should
Device can be compensated and buffered under the operating mode of long-time frequent vibration to the minim gap of generation, it is to avoid sensor gap
The inaccurate problem of positioning caused by error.The anti-tampering intelligent valve positioner of the present invention, fluctuates with anti-source of the gas and disturbs, antivibration
The features such as dynamic interference, anti-electromagnetic interference, can effectively ensure that reliability of the locator under complex jamming operating mode and positioning are steady
It is qualitative.
Claims (10)
1. a kind of anti-tampering intelligent valve positioner, including：
Electropneumatic transducer, the gas circuit end of the electropneumatic transducer is used to be connected with valve actuator；
The circuit controling assembly being connected with the circuit end of the electropneumatic transducer；
The displacement detecting feedback unit being connected with the circuit controling assembly；
Characterized in that, described electropneumatic transducer includes pneumatic amplifier, is arranged on the back pressure mouthful of the pneumatic amplifier
Baffle plate and the electromagnetic drive mechanism of the driving baffle plate and the right size of nozzle cover that nozzle and the nozzle are covered, it is described
Electromagnetic drive mechanism be controlled by the current controling signal that the circuit controling assembly sends；
The air inlet of described pneumatic amplifier is provided with miniature decompression valuator, and described miniature decompression valuator includes permanent saving
Stream screw and the relief spring and sealing ring that are enclosed within the permanent throttling screw, described permanent throttling screw pneumatic are put with described
The constant throttling orifice that big device is provided with coordinates.
2. anti-tampering intelligent valve positioner according to claim 1, it is characterised in that described electromagnetic drive mechanism
Including：Two groups of symmetrical electromagnet and the dynamic iron being arranged in the middle of two groups of symmetrical electromagnet, the dynamic iron and the gear
Plate is connected.
3. anti-tampering intelligent valve positioner according to claim 2, it is characterised in that the gravity axis of described dynamic iron
Fulcrum shaft is provided with, the baffle plate is rotated under the drive of the dynamic iron around the fulcrum shaft.
4. anti-tampering intelligent valve positioner according to claim 1, it is characterised in that described displacement detecting feedback
Unit includes：Resetting shaft and be arranged on the resetting shaft side that the feedback rod being connected with valve and the feedback rod are connected
Displacement transducer, the resetting shaft is provided with driving gear, and institute's displacement sensors are provided with and the driving gear coordinates
Driven gear.
5. anti-tampering intelligent valve positioner according to claim 4, it is characterised in that installed on described resetting shaft
There is mechanical clamping gap compensation device, described mechanical grip blank compensation apparatus include the annular being set on the resetting shaft
For being held out against to the resetting shaft in pedestal, the mounting hole being radially arranged along the circular base and the setting mounting hole
Spring assembly.
6. anti-tampering intelligent valve positioner according to claim 5, it is characterised in that described spring assembly includes
Steel ball that the bar portion screw thread of set screw and the set screw coordinates and be set in the set screw bar portion compression
Spring, one end of described compression spring is withstood on the steel ball, and the other end of described compression spring withstands on the annular base
On seat, described steel ball is withstood on described resetting shaft.
7. anti-tampering intelligent valve positioner according to claim 6, it is characterised in that described spring assembly is three
It is individual, it is evenly distributed on the circular base into 120 degree.
8. anti-tampering intelligent valve positioner according to claim 1, it is characterised in that institute's displacement sensors are used
Resistance-type partial pressure sensor.
9. anti-tampering intelligent valve positioner according to claim 1, it is characterised in that the circuit controling assembly bag
Include cpu control circuit plate and the LCD display circuit plate being connected with the cpu control circuit plate；
Three reversals of diode of the one-way conduction of series connection are provided with the positive terminal of the signal input of the cpu control circuit plate to protect
Protection circuit, two groups of voltage-regulator diodes dual protective circuit of voltage regulation in parallel is provided with the rear end of described cpu control circuit plate.
10. anti-tampering intelligent valve positioner according to claim 1, it is characterised in that described anti-tampering intelligence
Energy valve positioner, also includes：Housing unit, described housing unit includes upper lid and lower house, the upper lid and lower house
Inside is sprayed with electromagnetic interference shield paint, and the electropneumatic transducer and circuit controling assembly are arranged in the housing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611089721.XA CN106763977B (en) | 2016-12-01 | 2016-12-01 | A kind of anti-tampering intelligent valve positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611089721.XA CN106763977B (en) | 2016-12-01 | 2016-12-01 | A kind of anti-tampering intelligent valve positioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106763977A true CN106763977A (en) | 2017-05-31 |
| CN106763977B CN106763977B (en) | 2018-09-11 |
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|---|---|---|---|
| CN201611089721.XA Active CN106763977B (en) | 2016-12-01 | 2016-12-01 | A kind of anti-tampering intelligent valve positioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006307A (en) * | 2017-12-29 | 2018-05-08 | 武汉拓优测控科技有限公司 | Intrinsic safety and the separated pneumatic positioner valve of flame proof |
| CN109826997A (en) * | 2019-03-26 | 2019-05-31 | 无锡凯尔克仪表阀门有限公司 | Throttle structure for nozzle baffle type locator |
| IT201800006825A1 (en) * | 2018-06-29 | 2019-12-29 | ACTUATOR EQUIPPED WITH AN ELECTROMAGNETIC FIELD SHIELDING DEVICE FOR MAGNETIC OR MAGNETO-RESISTIVE POSITION SENSORS. | |
| CN113790304A (en) * | 2021-08-23 | 2021-12-14 | 浙江中控技术股份有限公司 | Intrinsic safety HART communication system for intelligent valve positioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108006307A (en) * | 2017-12-29 | 2018-05-08 | 武汉拓优测控科技有限公司 | Intrinsic safety and the separated pneumatic positioner valve of flame proof |
| CN108006307B (en) * | 2017-12-29 | 2019-08-20 | 武汉拓优智能股份有限公司 | The pneumatic positioner valve of intrinsic safety chamber and flame proof separation |
| IT201800006825A1 (en) * | 2018-06-29 | 2019-12-29 | ACTUATOR EQUIPPED WITH AN ELECTROMAGNETIC FIELD SHIELDING DEVICE FOR MAGNETIC OR MAGNETO-RESISTIVE POSITION SENSORS. | |
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| CN109826997A (en) * | 2019-03-26 | 2019-05-31 | 无锡凯尔克仪表阀门有限公司 | Throttle structure for nozzle baffle type locator |
| CN109826997B (en) * | 2019-03-26 | 2023-09-22 | 无锡凯尔克仪表阀门有限公司 | Throttling structure for nozzle baffle type positioner |
| CN113790304A (en) * | 2021-08-23 | 2021-12-14 | 浙江中控技术股份有限公司 | Intrinsic safety HART communication system for intelligent valve positioner |
| CN113790304B (en) * | 2021-08-23 | 2023-11-14 | 浙江中控技术股份有限公司 | Intrinsic safety HART communication system for intelligent valve positioner |
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