CN205401895U - Orthoscopic minute adjustment valve - Google Patents
Orthoscopic minute adjustment valve Download PDFInfo
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- CN205401895U CN205401895U CN201620137785.1U CN201620137785U CN205401895U CN 205401895 U CN205401895 U CN 205401895U CN 201620137785 U CN201620137785 U CN 201620137785U CN 205401895 U CN205401895 U CN 205401895U
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- output shaft
- controller
- motor
- linear displacement
- control valve
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Abstract
The utility model discloses an orthoscopic minute adjustment valve, including the electrical control valve, the electrical control valve passes through lazytongs and the drive of drive output shaft by step motor, and wherein step motor is connected with the lazytongs, and the lazytongs is connected with the electrical control valve with drive output shaft, drive output shaft, is equipped with the linear displacement sensor that is used for detecting its linear displacement on the drive output shaft, and this linear displacement sensor is connected with the controller, and the controller is connected with step motor through drive module again, wherein, drive module is used for the just reversal and the speed of control stepper motor. The utility model discloses the control accuracy who adjusts reaches as high as 0.1% of full scale, is particularly suitable for the application scenario that is used for pressure or flow control accuracy to have relatively high expectations.
Description
Technical field
This utility model relates to a kind of orthoscopic fine adjustment valve, belongs to adjustment valve technology field.
Background technology
Regulating valve and have another name called control valve, in industrial automation process control field, by accepting the control signal of regulation unit output, that removes the technological parameters such as change rate-of flow, pressure, temperature, liquid level by power operation finally controls element.Generally it is made up of actuator and valve.If pressing stroke feature, regulating valve and can be divided into Direct Travel and rectilinear path；By the power that its joined actuator uses, it is possible to be divided into pneumatic control valve, electric control valve, hydraulic adjusting valve three kinds.
When controlling gas or liquid line outlet pressure or flow at needs, need the outlet at pipeline that the electric control valve of one its aperture of continuously adjustable is installed, in the application scenario that Pressure control or flow control required precision is not high, the degree of regulation of common adjustment valve is the highest can reach the 1% of full scale (maximum opening), but in the application scenario that Pressure control or flow control required precision is higher, the degree of regulation regulating valve is required far above 1%, at least to reach the 0.1% of full scale (maximum opening), therefore, the common valve that regulates just is difficult to meet the application that this requirement is higher, the control accuracy making pressure or flow is not high, cannot realize pressure or flow are needed in the application of fine adjustment and control.Therefore, study a kind of high-precision fine adjustment valve and just seem important.
Utility model content
The technical problems to be solved in the utility model is: providing a kind of orthoscopic fine adjustment valve, degree of regulation can reach more than the 0.1% of full scale (maximum opening), it is possible to overcomes the deficiencies in the prior art.
The technical solution of the utility model: a kind of orthoscopic fine adjustment valve, including electric control valve, described electric control valve by lazy-tongs and is driven output shaft to drive by motor, wherein motor is connected with lazy-tongs, lazy-tongs are connected with driving output shaft, output shaft is driven to be connected with electric control valve, driving, output shaft is provided with the linear displacement transducer for detecting its straight-line displacement, this linear displacement transducer is connected with controller, controller is connected with motor further through driving module, wherein, described driving module is for controlling rotating and the speed of motor.
The precision of described linear displacement transducer is more than 0.1.
After instruction is communicated to controller by user, the current displacement information of driving output shaft that linear displacement transducer is detected by controller is compared with input displacement commands；If input displacement is more than current displacement, then controller instruction issuing is to the driving module of motor, controls motor and rotates forward, so that driving output shaft to move and arrive input displacement place；If input displacement is less than current displacement, then controller instruction issuing is to the driving module of motor, controls motor reversion, so that driving output shaft to move and arrive input displacement place；If input displacement is equal to current displacement, then controller controls to drive module and motor to be failure to actuate；In driving output shaft moving process, displacement information is transferred to controller by linear displacement transducer in real time, it is achieved the closed loop control of valve opening.
After instruction is communicated to controller by user, controller calculates the distance driving the current displacement information of output shaft and input displacement that linear displacement transducer detects, if this distance is more than the half driving output shaft total kilometres, then controller is assigned instruction and is controlled motor and rotate in the way of first half section translational speed is more than second half section translational speed, and this kind of mode can reduce and regulate valve and arrive the regulating time specifying aperture.
Described driving output shaft total kilometres are to drive output shaft that electric control valve is fully opened required displacement stroke from being closed to.
The beneficial effects of the utility model are:
Control valve opening, by the linearity information of the feedback of linear displacement transducer, is adjusted, it is achieved the closed loop control to valve opening by this utility model dynamically.The control accuracy that this utility model regulates can reach the 0.1% of full scale (maximum opening), fully meets the application scenario that Pressure control or flow control required precision is higher.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is control flow chart of the present utility model.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with attached Fig. 1 and 2, this utility model is described in further detail.
This utility model orthoscopic fine adjustment valve, including clamshell 6, electric control valve, motor 4, lazy-tongs 2, linear displacement transducer 3, drive output shaft 5 and controller, wherein lazy-tongs 2 are this area routine techniques means, motor 4, linear displacement transducer 3 are commercially available prod, the precision of linear displacement transducer 3 is more than 0.1, and controller adopts general PLC.
As shown in Figure 1, electric control valve by lazy-tongs 2 and is driven output shaft 5 to drive by motor 4, wherein motor 4 is connected with lazy-tongs 2, lazy-tongs 2 are connected with driving output shaft 5, output shaft 5 is driven to be connected with electric control valve, driving, output shaft 5 is provided with the linear displacement transducer 3 for detecting its straight-line displacement, this linear displacement transducer 3 is connected with controller, controller is connected with motor 4 further through driving module 1, wherein, described driving module 1 is for controlling rotating and the speed of motor 4, lazy-tongs 2 can make the motion of driving output shaft 5 and the synchronized movement of motor 4.
As in figure 2 it is shown, control mode of the present utility model is: after instruction is communicated to controller by user, the current displacement information of driving output shaft 5 that linear displacement transducer 3 is detected by controller is compared with input displacement commands；If input displacement is more than current displacement, then controller instruction issuing is to the driving module 1 of motor 4, controls motor 4 and rotates forward, so that driving output shaft 5 to move and arrive input displacement place；If input displacement is less than current displacement, then controller instruction issuing is to the driving module 1 of motor 4, controls motor 4 and reverses, so that driving output shaft 5 to move and arrive input displacement place；If input displacement is equal to current displacement, then controller controls to drive module 1 and motor 4 to be failure to actuate；In driving output shaft 5 moving process, displacement information is transferred to controller by linear displacement transducer 3 in real time, realize the closed loop control of valve opening, namely in driving output shaft 5 moving process, if crossed instruction displacement place, then controller controls again to drive output shaft 5 back to move, until eventually settling at instruction displacement place.
Further, in aforementioned control, after instruction is communicated to controller by user, controller calculates the distance driving the current displacement information of output shaft 5 and input displacement that linear displacement transducer 3 detects, if this distance is more than the half driving output shaft 5 total kilometres, then controller assign instruction control motor 4 rotate in the way of first half section translational speed is more than second half section translational speed, when this distance is less than the half of driving output shaft 5 total kilometres, then controller assigns instruction control motor 4 with the rotation of relatively low velocity, this kind of mode can reduce the regulating time and round number of times that regulate valve arrival appointment aperture.
Aforementioned driving output shaft 5 total kilometres are to drive output shaft 5 that electric control valve is fully opened required displacement stroke from being closed to.
Claims (2)
1. an orthoscopic fine adjustment valve, including electric control valve, it is characterized in that: described electric control valve by lazy-tongs (2) and is driven output shaft (5) to drive by motor (4), wherein motor (4) is connected with lazy-tongs (2), lazy-tongs (2) are connected with driving output shaft (5), output shaft (5) is driven to be connected with electric control valve, driving, output shaft (5) is provided with the linear displacement transducer (3) for detecting its straight-line displacement, this linear displacement transducer (3) is connected with controller, controller is connected with motor (4) further through driving module (1), wherein, described driving module (1) is used for controlling rotating and the speed of motor (4).
2. orthoscopic fine adjustment valve according to claim 1, it is characterised in that: the precision of described linear displacement transducer (3) is more than 0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137785.1U CN205401895U (en) | 2016-02-24 | 2016-02-24 | Orthoscopic minute adjustment valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137785.1U CN205401895U (en) | 2016-02-24 | 2016-02-24 | Orthoscopic minute adjustment valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401895U true CN205401895U (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620137785.1U Active CN205401895U (en) | 2016-02-24 | 2016-02-24 | Orthoscopic minute adjustment valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN205401895U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508695A (en) * | 2016-02-24 | 2016-04-20 | 贵州安吉华元科技发展有限公司 | Linear precision regulating value and control method thereof |
-
2016
- 2016-02-24 CN CN201620137785.1U patent/CN205401895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508695A (en) * | 2016-02-24 | 2016-04-20 | 贵州安吉华元科技发展有限公司 | Linear precision regulating value and control method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |