CN206072476U - A kind of valve control device adjusted for fluid flow - Google Patents
A kind of valve control device adjusted for fluid flow Download PDFInfo
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- CN206072476U CN206072476U CN201621026523.4U CN201621026523U CN206072476U CN 206072476 U CN206072476 U CN 206072476U CN 201621026523 U CN201621026523 U CN 201621026523U CN 206072476 U CN206072476 U CN 206072476U
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- fluid flow
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Abstract
This utility model provides a kind of valve control device adjusted for fluid flow, belongs to valve technology field.It solves the problems, such as that existing technical controlling is complicated and degree of accuracy is not high.This valve control device for being used for fluid flow regulation includes motor and the motor drive module for controlled motor rotating for controlling opening of valve size, the current sample module for also including MCU and being acquired for the electric current to being input into, current sample module is connected with the input of MCU, the input of MCU is also associated with for gathering the valve position feedback module of current valve position, and motor is connected with the outfan of MCU by motor drive module.This valve control device can improve the accurate adjustment of fluid flow.
Description
Technical field
This utility model belongs to valve technology field, is related to a kind of valve control device adjusted for fluid flow.
Background technology
With the development of computer technology and control technology, the control of water/gas flow is realized by intelligent control technology, is entered
And realize that indoor temperature adjusts the primary method of control for having become indoor heating, cold supply system.Wherein electromagnetic valve and electrically operated valve
The main actuator for realizing Flow-rate adjustment, as electromagnetic valve is difficult to realize aperture regulation, therefore electrically operated valve become water/
The first-selected actuator of the control of throughput.But in existing electrically operated valve application, the aperture change procedure of its valve is simultaneously
A non-linear process, therefore the work of existing electrically operated valve can only realize the aperture regulation of valve, can not realize accurate
Aperture is positioned, thus also is difficult to realize the accurate estimation of the accurate control of flow, particularly flow.In addition, generally using at present
Voltage or electric current are read during this position to feed back valve opening, the circuit complexity of design, and other equipment, are generally required
Voltage or current sample, circuit are complicated, high cost.
For above-mentioned problem, existing Chinese patent literature discloses a kind of pinpoint electrical ball valve aperture
Control method and its control circuit【Application number：CN201210156280.6】, control circuit includes main control unit MCU, magnetic induction
Circuit, permanent magnet, motor-drive circuit, data interface circuit, keystroke interface circuit, status display circuit；Magnetic conduction circuitry connects
The each state sensor enable signal ENi from MCU is received, current induced signal F is fed back to MCU by magnetic conduction circuitry；MCU with
Data interface circuit connects；MCU is connected with motor-drive circuit by rotating clockwise JK1 and rotating counterclockwise two signals of JK2
Connect, realize that the rotation to motor is controlled；And status display circuit realizes correspondence LED by receiving the status signal SF from MCU
Display.The invention can eliminate the regulation error that aperture nonlinear change is brought during ball valve is adjusted, and can also eliminate and commonly subtract
The rotation error of fast synchronous motor, realizes being accurately positioned and control for electrical ball valve, but the invention be accurately positioned realizing and
During control, the quantity of magnetic inductor and permanent magnet in magnetic conduction circuitry is need to rely on, control is complicated, and cannot realize that valve is appointed
The regulation of one aperture, degree of accuracy be not high.
The content of the invention
The purpose of this utility model is there are the problems referred to above for existing technology, it is proposed that a kind of to adjust for fluid flow
The valve control device of section, valve control device technical problem to be solved is：How the accurate tune of fluid flow is improved
Section.
The purpose of this utility model can be realized by following technical proposal：A kind of valve control adjusted for fluid flow
Device processed, including the motor for controlling opening of valve size and the motor drive module for controlled motor rotating, which is special
Levy and be, the current sample module that the valve control device also includes MCU and is acquired for the electric current to being input into is described
Current sample module is connected with the input of MCU, and the input of the MCU is also associated with for gathering the valve of current valve position
Door position feedback module, the motor are connected with the outfan of MCU by motor drive module.
Its operation principle is：MCU receives the current signal of current sample module collection and current signal is processed, and locates
A correspondence valve opening value is obtained after reason, wherein be a proportionate relationship between the current value being input into and valve opening value, i.e.,
Each current value one valve location of correspondence, MCU also receive defeated by valve position feedback module while current signal is received
The current valve position signal for entering, MCU export corresponding control signal to electricity according to the current value and current valve position of input
Machine drive module, when having differences between current value and current valve position, motor drive module controlled motor is rotated forward
Or invert until current valve position is corresponding with the current value of input.Correspondence valve is obtained by gathering the current value being input into
Opening value, can realize the regulation of the arbitrary aperture of valve by such mode, and the setting of valve position feedback module can
Realize that position is fed back after valve regulated, it is ensured that valve regulated to desired location, improve the accurate adjustment of valve location, Jin Ershi
The accurate adjustment of existing fluid flow.
In the above-mentioned valve control device adjusted for fluid flow, the valve position feedback module includes current potential
The positive pole of the first pin earth lead of device R4 and voltage follower U2, the potentiometer R4, second pin and voltage follower U2
Input connects, and the 3rd pin connects power supply, is also associated with electric capacity C2 between first pin and second pin of the potentiometer R4,
The negative input of the voltage follower U2 is connected with the outfan of voltage follower U2, the output of the voltage follower U2
End is connected with MCU.The use of potentiometer R4 can accurately obtain current valve position information, it is ensured that it is accurate that fluid flow is adjusted
Degree, and the use of voltage follower U2 can effectively improve carrying load ability, it is to avoid potentiometer R4 is directly connected on MCU, due to
Resistance in the MCU pins can produce impact to potentiometer R4, cause non-linear, the inaccurate problem of positioning occur, further carry
The degree of accuracy that high fluid flow is adjusted.
In the above-mentioned valve control device adjusted for fluid flow, the current sample module include resistance R1,
Resistance R2, electric capacity C1 and diode D1, the positive terminal of the diode D1 are used to receive current value, the negative pole of the diode D1
End is connected with one end of resistance R1 and one end of resistance R2 respectively, the other end of the resistance R1 respectively with one end of electric capacity C1 and
The input connection of MCU, the other end of the other end and electric capacity C1 of the resistance R2 are connected with ground wire.Wherein, resistance R2 is used
In the electric current of input is converted into the input that voltage is conveyed to MCU, MCU is corresponding so as to calculate by gathering this voltage
Electric current；Resistance R1 and electric capacity C1 composition filter circuits, for filtering noise；Diode D1 is used to prevent from being input into back-pressure.By electricity
Stream voltage conversion circuit can improve the degree of accuracy of input current value, so as to improve the degree of accuracy of fluid flow regulation.
In the above-mentioned valve control device adjusted for fluid flow, the current sample module also includes resistance R3
With diode D6, the resistance R3 and resistance R2 is connected in parallel, the negative pole end of the diode D6 and the negative pole end of diode D1
Connection, the positive terminal earth lead of the diode D6.Increasing resistance R3 can reduce on single resistance when electric current changes voltage
Power consumption, so as to reduce the measurement error that causes of resistance heating, the use of diode D6 is prevented from input overvoltage.
In the above-mentioned valve control device adjusted for fluid flow, the current sample module also includes and two poles
The resistance wire F1 of the positive terminal connection of pipe D1.The use of resistance wire F1 effectively can prevent from being input into excessively stream.
In the above-mentioned valve control device adjusted for fluid flow, the MCU is included for the work to motor
The current acquisition module that electric current is acquired.Whether MCU judges motor according to the motor working current that current acquisition module is gathered
Generation stall, when motor working current exceedes setting value, controlled motor is out of service, prevents motor rotation blockage from damaging.
In the above-mentioned valve control device adjusted for fluid flow, the valve control device also includes power supply mould
Block.Power module is used for motor and powers for MCU.
In the above-mentioned valve control device adjusted for fluid flow, the MCU is also associated with for sending out in motor
The siren reported to the police during raw stall.The use of siren, can more effectively protect motor against damages.
Compared with prior art, this valve control device for being used for fluid flow regulation has advantages below：
1st, the input signal that this utility model is adjusted as valve opening using current value, the current value and valve of its input
It is in proportionate relationship between aperture, the regulation of the arbitrary aperture of valve can be realized, while the use of current-to-voltage converting circuit, improves
The accuracy of the current value of input, and then improve the accuracy of fluid flow size adjustment.
2nd, the application of this utility model valve position feedback module so that in controlling opening of valve, can be more accurately
Valve regulated is adjusted to expected open position, degree of accuracy height, circuit structure are simple.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
In figure, 1, MCU；11st, current acquisition module；2nd, current sample module；3rd, valve position feedback module；4th, motor drives
Dynamic model block；5th, motor；6th, siren；7th, power module.
Specific embodiment
The following is specific embodiment of the utility model and combine accompanying drawing, further is made to the technical solution of the utility model
Description, but this utility model is not limited to these embodiments.
As shown in Figure 1, 2, this valve control device for being used for fluid flow regulation is included for controlling opening of valve size
Motor 5 and the motor drive module 4 for 5 rotating of controlled motor, also including MCU1 and for be input into current signal
The current sample module 2 being acquired, wherein, current sample module 2 is connected with the input of MCU1, and the input of MCU1 also connects
It is connected to for gathering the valve position feedback module 3 of current valve position, motor 5 is defeated with MCU1 by motor drive module 4
Go out end connection.
Wherein, valve position feedback module 3 includes potentiometer R4 and voltage follower U2, and first pin of potentiometer R4 connects
Ground wire, second pin are connected with the electrode input end of voltage follower U2, and the 3rd pin connects power supply, first pin of potentiometer R4
Electric capacity C2 is also associated between second pin, the negative input of voltage follower U2 is connected with the outfan of voltage follower U2
Connect, the outfan of voltage follower U2 is connected with MCU1.When valve is rotated, the position that potentiometer R4 can be rotated according to valve,
Change the voltage variety between the 3rd pins of potentiometer R4 and second pin, so as to obtain valve opening position.Potentiometer R4
Use can accurately obtain current valve position information, it is ensured that the degree of accuracy that fluid flow is adjusted, and voltage follower U2
Using carrying load ability can be effectively improved, it is to avoid potentiometer R4 is directly connected on MCU1, due to the resistance in the MCU1 pins
Impact can be produced on potentiometer R4, cause non-linear, the inaccurate problem of positioning occur, further increase fluid flow regulation
Degree of accuracy.
Used as another kind of preferred version, valve position feedback module 3 includes position sensor of valve.
Current sample module 2 includes resistance R1, resistance R2, resistance R3, diode D1, diode D6, electric capacity C1 and resistance
Silk F1, resistance wire F1 is connected with the positive terminal of diode D1, the negative pole end of diode D1 respectively with resistance R1 and resistance R2 one
End connection, the other end of resistance R1 are connected with one end of electric capacity C1 and the input of MCU1 respectively, the other end and electricity of resistance R2
The other end for holding C1 is connected with ground wire, and resistance R3 and diode D6 are connected in parallel with resistance R2, wherein, the negative pole of diode D6
End is connected with the negative pole end of diode D1, the positive terminal earth lead of diode D6.Wherein, resistance R2 and resistance R3 are connected in parallel use
In the current value of input is converted into voltage and MCU1 is conveyed to, MCU1 gathers this voltage so as to calculate corresponding electric current,
And then corresponding valve opening value is obtained, can reduce single ohmically using the resistance R2 and resistance R3 of two formed objects
Power consumption, so as to reduce the measurement error that resistance heating causes.Resistance R1 and electric capacity C1 composition filter circuits, for filtering noise；
Diode D1 is used to prevent from being input into back-pressure.Resistance wire F1, diode D1 and diode D6 composition input protection circuits, resistance wire F1
For preventing from being input into excessively stream, diode D6 is used to prevent input overvoltage, diode D1 from preventing from being input into back-pressure.
MCU1 includes that MCU1 is adopted according to electric current for the current acquisition module 11 being acquired to the operating current of motor 5
5 operating current of motor of the collection input of module 11 judges whether motor 5 occurs stall, when 5 operating current of motor exceedes setting value,
Controlled motor 5 is out of service, prevents 5 stall of motor from damaging.
Motor drive module 4 includes driver U5, and the OUTA feet and OUTB feet of driver U5 are connected with motor 5 respectively, drives
Electric capacity C3 is also associated between the OUTA feet and OUTB feet of dynamic device U5, series connection after the PGND feet of driver U5 and the connection of AGND feet connects
Resistance R5, resistance R6 and electric capacity C4, wherein the junction point ground connection of electric capacity C4 and resistance R5 are connected to, resistance R6 and electric capacity C4 is used to filter
Ripple；The VCC feet of driver U5 connect 3.3V voltages, and the VDD feet of driver U5 connect 5V voltages；The INA feet and INB feet of driver U5 point
It is not connected with the input of MCU1, the control signal of MCU1 is received by INA feet, the operating current of motor 5 is conveyed by INB feet
Situation.Wherein resistance R5 is used for the operating current for gathering motor 5.
Valve control device also includes power module 7.Civil power is converted into by+5V voltages by power module 7 and+3.3V is electric
Pressure, wherein+5V the voltages for exporting work for motor 5,3.3V voltages are for powering for MCU1.
Preferably, MCU1 is also associated with the siren 6 for being reported to the police when motor 5 occurs stall.Alarm
Device 6 can adopt the combination of buzzer or light emitting diode or both.The use of siren 6, more effectively can protect motor 5 from
Damage.
The operation principle of this valve control device is：The current value range for arranging input is 4-20mA, wherein, 4mA correspondences
Valve opening is 0%, i.e. valve-closed state；20mA correspondence valve opening be 100%, i.e. valve wide open state, 4-20mA it
Between current value correspond valve opening, i.e. one valve opening of each current value correspondence.One current value of input, the electric current
The current value is conveyed to MCU1 by current sample module 2 by value, wherein, the electric current of input is by current sample module 2
Resistance R2 and resistance R3 change into voltage, then MCU1 is conveyed to after resistance R1 and electric capacity C1 filter noise, and MCU1 is to input
Magnitude of voltage calculated so as to draw corresponding electric current, and then a corresponding valve opening value is obtained according to the electric current,
MCU1 also receives the current valve position signal being input into by valve position feedback module 3, MCU1 while current signal is received
Corresponding control signal export to motor drive module 4 according to the current value and current valve position of input, in current value and ought
When having differences between early gate position, such as the corresponding valve opening of input current value is 20%, is fed back in valve feedback module
Current valve position be 10% when, 4 controlled motor 5 of motor drive module is rotated forward, and real-time monitoring valve current location,
When valve current location reaches valve opening 20%, motor 5 quits work；In the current valve position of valve feedback module feedback
When being set to 25%, MCU1 exports corresponding control signal to motor drive module 4, and 4 controlled motor 5 of motor drive module is carried out instead
Turn, when valve current location reaches valve opening 25%, motor 5 quits work；In 5 course of work of motor, if electric current is adopted
Collection module 11 is collected when the operating current of motor 5 exceedes preset value and judges that motor 5 occurs stall, and such as current value rises to
During 500mA, that is, judge that motor 5 occurs stall, now, MCU1 output control signals are reported to the police to alarm, or by control
Motor processed 5 carries out multiple rotating to realize the normal work of motor 5, if stall phenomenon is still suffered from preset value, carries out
Report to the police.Correspondence valve opening value is obtained by gathering the current value being input into, can realize that valve is arbitrary by such mode
The regulation of aperture, and the setting of valve position feedback module 3 can realize after valve regulated that position is fed back, it is ensured that valve regulated
To desired location, the accurate adjustment of valve location is improved, and then realizes the accurate adjustment of fluid flow.
Specific embodiment described herein is only explanation for example to this utility model spirit.This utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from it is of the present utility model spirit or surmount scope defined in appended claims.
Claims (8)
1. a kind of valve control device adjusted for fluid flow, including the motor (5) for controlling opening of valve size and
For the motor drive module (4) of controlled motor (5) rotating, it is characterised in that the valve control device also includes MCU
(1) the current sample module (2) and for the electric current to being input into being acquired, the current sample module (2) is with MCU's (1)
Input connects, and the input of the MCU (1) is also associated with for gathering the valve position feedback module of current valve position
(3), the motor (5) is connected with the outfan of MCU (1) by motor drive module (4).
2. it is according to claim 1 for fluid flow adjust valve control device, it is characterised in that the valve position
Feedback module (3) is put including potentiometer R4 and voltage follower U2, the first pin earth lead of the potentiometer R4, second pin
It is connected with the electrode input end of voltage follower U2, the 3rd pin connects power supply, first pin of the potentiometer R4 draws with second
Electric capacity C2 is also associated between foot, the negative input of the voltage follower U2 is connected with the outfan of voltage follower U2,
The outfan of the voltage follower U2 is connected with MCU (1).
3. it is according to claim 1 and 2 for fluid flow adjust valve control device, it is characterised in that the electricity
Stream sampling module (2) includes resistance R1, resistance R2, electric capacity C1 and diode D1, and the positive terminal of the diode D1 is used to receive
Current value, the negative pole end of the diode D1 are connected with one end of resistance R1 and one end of resistance R2 respectively, the resistance R1's
The other end is connected with one end of electric capacity C1 and the input of MCU (1) respectively, the other end and electric capacity C1 of the resistance R2 it is another
End is connected with ground wire.
4. it is according to claim 3 for fluid flow adjust valve control device, it is characterised in that the electric current is adopted
Egf block (2) also includes that resistance R3 and diode D6, the resistance R3 and resistance R2 are connected in parallel, the negative pole of the diode D6
End is connected with the negative pole end of diode D1, the positive terminal earth lead of the diode D6.
5. it is according to claim 4 for fluid flow adjust valve control device, it is characterised in that the electric current is adopted
Egf block (2) also includes the resistance wire F1 being connected with the positive terminal of diode D1.
6. it is according to claim 1 for fluid flow adjust valve control device, it is characterised in that the MCU (1)
Including the current acquisition module (11) for being acquired to the operating current of motor (5).
7. according to claim 1 or 6 for fluid flow adjust valve control device, it is characterised in that the valve
Controlling device for doors also includes power module (7).
8. according to claim 1 or 6 for fluid flow adjust valve control device, it is characterised in that the MCU
(1) it is also associated with the siren (6) for being reported to the police when motor (5) occurs stall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621026523.4U CN206072476U (en) | 2016-08-31 | 2016-08-31 | A kind of valve control device adjusted for fluid flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621026523.4U CN206072476U (en) | 2016-08-31 | 2016-08-31 | A kind of valve control device adjusted for fluid flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206072476U true CN206072476U (en) | 2017-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621026523.4U Active CN206072476U (en) | 2016-08-31 | 2016-08-31 | A kind of valve control device adjusted for fluid flow |
Country Status (1)
| Country | Link |
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| CN (1) | CN206072476U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940069A (en) * | 2017-11-20 | 2018-04-20 | 合肥硕佳电子科技有限公司 | A kind of anti-jamming electrical ball valve |
| CN107957691A (en) * | 2017-12-26 | 2018-04-24 | 郑州春泉节能股份有限公司 | A kind of electrically operated valve proportional control apparatus and control method |
| CN108006259A (en) * | 2018-01-19 | 2018-05-08 | 山东钢铁集团日照有限公司 | A kind of quick-adjustsing method of electrically operated valve |
-
2016
- 2016-08-31 CN CN201621026523.4U patent/CN206072476U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940069A (en) * | 2017-11-20 | 2018-04-20 | 合肥硕佳电子科技有限公司 | A kind of anti-jamming electrical ball valve |
| CN107957691A (en) * | 2017-12-26 | 2018-04-24 | 郑州春泉节能股份有限公司 | A kind of electrically operated valve proportional control apparatus and control method |
| CN107957691B (en) * | 2017-12-26 | 2023-04-28 | 郑州春泉节能股份有限公司 | Electric valve proportion control device and control method |
| CN108006259A (en) * | 2018-01-19 | 2018-05-08 | 山东钢铁集团日照有限公司 | A kind of quick-adjustsing method of electrically operated valve |
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Address after: Room 102, unit 1, building 3, Xinshun SME Pioneer Park, Jiangkou street, Huangyan District, Taizhou City, Zhejiang Province Patentee after: TAIZHOU TONHE FLUID CONTROL Co.,Ltd. Address before: 318020, 1012, Xincheng Road, Xicheng street, Taizhou, Zhejiang, Huangyan Patentee before: TAIZHOU TONHE FLOW CONTROL EQUIPMENT Co.,Ltd. |