CN204628755U - A kind of novel pneumatic intelligent positioner - Google Patents
A kind of novel pneumatic intelligent positioner Download PDFInfo
- Publication number
- CN204628755U CN204628755U CN201520336719.2U CN201520336719U CN204628755U CN 204628755 U CN204628755 U CN 204628755U CN 201520336719 U CN201520336719 U CN 201520336719U CN 204628755 U CN204628755 U CN 204628755U
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- valve
- valve rod
- chamber
- register control
- gas
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model relates to valve positioner field, be specifically related to a kind of novel pneumatic intelligent positioner, comprise valve rod, register control, in establish the chamber of active clapboard, described chamber is divided into upper and lower two air chambers by described active clapboard, and described valve rod one end to be located in described lower chamber and to be connected with described active clapboard; Suction valve and the gas outlet valve of described register control and described upper gas chamber are connected.The utility model adopts the mode of two-way push, accelerates locating speed, adopts the mode of pneumatic location and stacked piezoelectric pottery dual-positioning simultaneously, improves positioning precision.
Description
Technical field
The utility model relates to valve positioner field, is specifically related to a kind of novel pneumatic intelligent positioner.
Background technique
Modulating valve is also known as control valve, it is the device with power operation alter flow in process control system, mechanical adjustment valve, electric control valve, hydraulic adjusting valve and pneumatic control valve can be divided into by implementation, wherein pneumatic control valve because its structure is simple, easy to operate, use reliable, be easy to safeguard and the advantage such as fire-proof and explosion-proof, have a wide range of applications at Large processes control fields such as metallurgy, chemical industry, weaving, petrochemical industry, pharmacy.Pneumatic intelligent valve positioner is the special controlling component of pneumatic control valve, can improve the characteristic of valve, improves the precision, the speed of response that control.The positioning work piece that external modulating valve is supporting is at present all almost intellective electropneumatic valve positioner.Domestic modulating valve is because of the reason of Industry Development Level, economic dispatch aspect, and the supporting intelligent positioner ratio of modulating valve is about 40%-70%, the basic mating electrical valve positioner of all the other modulating valve.The ratio of the supporting intelligent positioner of modulating valve increased year by year in recent years, along with technical development mechanical positioners finally can by market.
Pneumatic intelligent valve positioner is the special controlling component of pneumatic actuator, pneumatic actuator is generally made up of pneumatic actuator and valve, pneumatic actuator is the pushing device of pneumatic control valve, accept air pressure signal input, promote valve rod move or rotate corresponding amount, to change displacement of valve rod or angle of swing, thus change the aperture of valve spool of valve, finally realize the changes in flow rate of control valve inner fluid.
In order to realize the flow of fine adjustment flowing medium, improving the usefulness of pneumatic control valve, actuator needing install valve positioner additional.Valve positioner is one of critical piece of pneumatic control valve, support the use with pneumatic control valve, the output signal of receiving system controller, then the aperture that control signal removes to control pneumatic control valve is exported, when after modulating valve action, the displacement of valve rod feeds back to valve positioner by displacement transducer again, thus a composition closed loop.
The final controlling element of current pneumatic control valve is conventional springs membrance valve, is made up of input gas circuit 1, gas storage film head 2, spring damping mechanism 3, stem movement mechanism, valve body parts.Stem movement mechanism comprises common valve rod 4.As shown in Figure 1, below Fig. 1, the arrow on the left side represents fluid and enters, and the arrow on the right represents fluid and goes out, and this structure is owing to adopting single air chamber, and motion positions speed is slow, and causes valve rod positioning precision lower due to fluid pressure fluctuations and air pressure fluctuation.For improving valve rod locating speed and positioning precision, the utility model proposes a kind of new structure intelligent positioner.
Model utility content
For prior art Problems existing, provide a kind of novel pneumatic intelligent positioner improving valve rod locating speed and positioning precision.
The technical solution adopted in the utility model is:
A kind of novel pneumatic intelligent positioner, comprise valve rod, register control, in establish the chamber of active clapboard, described chamber is divided into upper and lower two air chambers by described active clapboard, and described valve rod one end to be located in described lower chamber and to be connected with described active clapboard; Suction valve and the gas outlet valve of described register control and described upper gas chamber are connected, and described register control is also connected with the suction valve of described lower chamber and gas outlet valve.
As preferred implementation of the present utility model, described valve rod is piezoelectric constant valve rod, and described valve rod is also provided with contact electrode, and described register control is connected with described contact electrode.
As preferred implementation of the present utility model, also comprise gas amplifier, described gas amplifier is connected with the suction valve of described upper gas chamber, and described gas amplifier is also connected with the suction valve of described lower chamber, and described register control is connected with described gas amplifier.
As preferred implementation of the present utility model, described valve rod is also provided with locking mechanism, described register control is connected with described locking mechanism.
As preferred implementation of the present utility model, described valve rod is also provided with displacement detector, described register control is connected with institute displacement sensing device.
A using method for above-mentioned novel pneumatic intelligent positioner, concrete steps are as follows:
Step one: setting value is inputted register control, more current stem position and described setting value, determine stem movement direction, and open locking mechanism, register control by controlling upper gas chamber suction valve and gas outlet valve, lower chamber suction valve and gas outlet valve, and then controls stem movement.When valve rod moves downward, open upper gas chamber suction valve, close upper gas chamber gas outlet valve, open lower chamber gas outlet valve, close lower chamber suction valve.When valve rod moves upward, open lower chamber suction valve, close lower chamber gas outlet valve, open upper gas chamber gas outlet valve, close upper gas chamber suction valve.
Step 2: during stem movement, controls gas amplifier, increases air inflow, accelerates stem movement speed, when stem position is close to setting value, controls locking mechanism locking valve rod.Preferably, when stem position be in setting value ± 0.1mm within the scope of time, control locking mechanism locking valve rod.
Step 3: after locking valve rod, closes upper gas chamber suction valve and gas outlet valve, closes lower chamber suction valve and gas outlet valve.
Step 4: after locking valve rod, controls contact electrode voltage, and precision control valve bar arrives setting value position.In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
1, the utility model adopts the mode of pneumatic location and stacked piezoelectric pottery dual-positioning, improves positioning precision;
2, the utility model adopts the mode of two-way push simultaneously, accelerates locating speed.
Accompanying drawing explanation
Fig. 1 is prior art structural representation
Fig. 2 is the utility model structural principle schematic diagram
Mark in figure: 1-inputs gas circuit, 2-film head, 3-spring damping mechanism, the common valve rod of 4-, 5-setting value, 6-register control, 7-gas amplifier, 8-upper gas chamber, 801-upper gas chamber suction valve, 802-upper gas chamber gas outlet valve, 9-lower chamber, 901-lower chamber suction valve, 902-lower chamber gas outlet valve, 10-locking mechanism, 11-valve rod, 12-contact electrode, 13-displacement detector.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is described further.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
embodiment 1
As shown in Figure 2, a kind of novel pneumatic intelligent positioner, comprise valve rod 11, register control 6, in establish the chamber of active clapboard, described chamber is divided into upper and lower two air chambers by described active clapboard, and described valve rod 11 one end to be located in described lower chamber 9 and to be connected with described active clapboard; Suction valve 801 and the gas outlet valve 802 of described register control 6 and described upper gas chamber 8 are connected, and described register control 6 is also connected with the suction valve 901 of described lower chamber 9 and gas outlet valve 902.Spool is located at described valve rod 11 the other end, and the arrow in Fig. 2 on the left of spool represents flowing medium.
Described valve rod 11 is stacked piezoelectric ceramic valve rod, and described valve rod is also provided with contact electrode 12, and described register control 6 is connected with described contact electrode 12.Also comprise gas amplifier 7, described gas amplifier 7 is connected with the suction valve 801 of described upper gas chamber, and described gas amplifier 7 is also connected with the suction valve 901 of described lower chamber, and described register control 6 is connected with described gas amplifier 7.
Described valve rod 11 is also provided with locking mechanism 10, and described register control 6 is connected with described locking mechanism 10.Described valve rod 11 is also provided with displacement detector 13, and described register control 6 is connected with institute displacement sensing device 13.
A using method for above-mentioned novel pneumatic intelligent positioner, concrete steps are as follows:
Step one: setting value is inputted register control 6, more current valve rod 11 position and described setting value, determine the moving direction of valve rod 11, and open locking mechanism 10, register control is by controlling upper gas chamber suction valve 801 and gas outlet valve 802, lower chamber suction valve 901 and gas outlet valve 902, and then control valve rod 11 moves.When valve rod 11 moves downward, open upper gas chamber suction valve 801, close upper gas chamber gas outlet valve 802, open lower chamber gas outlet valve 902, close lower chamber suction valve 901.When valve rod 11 moves upward, open lower chamber suction valve 901, close lower chamber gas outlet valve 902, open upper gas chamber gas outlet valve 902, close upper gas chamber suction valve 901.
Step 2: when valve rod 11 moves, controls gas amplifier 7, increases air inflow, accelerates the movement velocity of valve rod 11, when the position of valve rod 11 is close to setting value, controls locking mechanism 10 locking valve rod 11.
Step 3: after locking valve rod 11, closes upper gas chamber suction valve 801 and gas outlet valve 802, closes lower chamber suction valve 901 and gas outlet valve 902.
Step 4: after locking valve rod 11, control the voltage of contact electrode 12, precision control valve bar 11 arrives setting value position.
Again in detail the utility model is described in detail below: for prior art Problems existing, the pneumatic intelligent positioner that a kind of positioning precision is high, locating speed is fast is provided.
The technical solution adopted in the utility model is: a kind of new structure intelligent positioner of the utility model structure principle chart as shown in Figure 2.Adopt two air chamber structure and the mode that stacked piezoelectric ceramic valve rod is combined, realize the location of the quick high accuracy of pneumatic intelligent positioner.Wherein two air chamber structure realizes the fast rough of valve rod, and stacked piezoelectric ceramic valve rod realizes the hi-Fix of pneumatic intelligent positioner.Specific works principle: external setting-up value 5 inputs intelligent positioning controller 6, control upper gas chamber suction valve 801, gas outlet valve 802, lower chamber suction valve 901, gas outlet valve 902, more current valve rod 11 position and setting value 5, determine the moving direction of valve rod 11.When moving downward, control gas amplifier 7, increase air inflow, accelerate the movement velocity of valve rod 11.Open upper inlet valve 801, close and close gas outlet valve 802, open lower gas outlet valve 902, close lower inlet valve 901.When the position of valve rod 11 arrives near setting value, locking structure 10 locking valve rod 11.Close upper inlet valve 801, close lower gas outlet valve 902.Control the voltage of contact electrode 12, precision control valve bar 11 is to desired location.When moving upward, control gas amplifier 7, increase air inflow, accelerate the movement velocity of valve rod 11.Open lower inlet valve 901, close lower gas outlet valve 902, open gas outlet valve 802, close upper inlet valve 801.When the position of valve rod 11 arrives near setting value, locking structure 10 locking valve rod 11.Close lower inlet valve 901, close and close gas outlet valve 802.Control the voltage of contact electrode 12, precision control valve bar 11 is to desired location.
This principle adopts the mode of two-way push, accelerates locating speed, adopts the mode of pneumatic location and stacked piezoelectric pottery dual-positioning simultaneously, improves positioning precision.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a novel pneumatic intelligent positioner, it is characterized in that, comprise valve rod, register control, in establish the chamber of active clapboard, described chamber is divided into upper and lower two air chambers by described active clapboard, and described valve rod one end to be located in described lower chamber and to be connected with described active clapboard; Suction valve and the gas outlet valve of described register control and described upper gas chamber are connected, and described register control is also connected with the suction valve of described lower chamber and gas outlet valve.
2. novel pneumatic intelligent positioner according to claim 1, is characterized in that, described valve rod is piezoelectric constant valve rod, and described valve rod is also provided with contact electrode, and described register control is connected with described contact electrode.
3. novel pneumatic intelligent positioner according to claim 1, it is characterized in that, also comprise gas amplifier, described gas amplifier is connected with the suction valve of described upper gas chamber, described gas amplifier is also connected with the suction valve of described lower chamber, and described register control is connected with described gas amplifier.
4. novel pneumatic intelligent positioner according to claim 1, is characterized in that, described valve rod is also provided with locking mechanism, and described register control is connected with described locking mechanism.
5. novel pneumatic intelligent positioner according to claim 1, is characterized in that, described valve rod is also provided with displacement detector, and described register control is connected with institute displacement sensing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336719.2U CN204628755U (en) | 2015-05-22 | 2015-05-22 | A kind of novel pneumatic intelligent positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336719.2U CN204628755U (en) | 2015-05-22 | 2015-05-22 | A kind of novel pneumatic intelligent positioner |
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| Publication Number | Publication Date |
|---|---|
| CN204628755U true CN204628755U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520336719.2U Expired - Fee Related CN204628755U (en) | 2015-05-22 | 2015-05-22 | A kind of novel pneumatic intelligent positioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832698A (en) * | 2015-05-22 | 2015-08-12 | 北方民族大学 | Novel pneumatic intelligent locator and application method thereof |
| CN105736821A (en) * | 2016-04-25 | 2016-07-06 | 浙江贝尔控制阀门有限公司 | Non-contact remote pneumatic intelligent positioner |
-
2015
- 2015-05-22 CN CN201520336719.2U patent/CN204628755U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832698A (en) * | 2015-05-22 | 2015-08-12 | 北方民族大学 | Novel pneumatic intelligent locator and application method thereof |
| CN105736821A (en) * | 2016-04-25 | 2016-07-06 | 浙江贝尔控制阀门有限公司 | Non-contact remote pneumatic intelligent positioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20190522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |