Flow adjustable regulating valve
Technical field
The present invention relates to the adjustable modulating valve of a kind of flow, relate in particular to a kind of modulating valve that can realize the different flow characteristic by replacing different flow template, belong to the flow control valve technical field.
Background technique
Modulating valve is as a kind of common actuator, and its effect is exactly the control signal of sending by regulator, changes the adjusting parameter, controlled variable is controlled in the desired scope of technology, to realize the automation of production process.So far, modulating valve is a crucial constituent element in the automation control system, is widely used in many important industries, as industries such as oil, chemical industry.But the Flow characteristics of modulating valve is fixed, if when working environment and job requirement change, promptly it will often change Flow characteristics, just needs to change the structure of modulating valve, and this makes the use of modulating valve bring narrow limitation.
Summary of the invention
The present invention is directed to that the Flow characteristics that existing flow control valve exists is fixed, problem such as malleable not, a kind of flow adjustable regulating valve of conveniently adjusted Flow characteristics is provided.
Flow adjustable regulating valve of the present invention is by the following technical solutions:
This flow adjustable regulating valve comprises valve seat, valve moves cell body, valve plate, switch plate and Traffic Profile, be provided with valve hole in the valve seat, the valve that inserts in the valve hole is installed on the sidewall of valve seat moves cell body, the bottom that valve moves cell body is provided with the through hole consistent with the valve hole axis, valve moves and is provided with the Traffic Profile moving trough in the cell body, valve plate moving trough and switch plate moving trough, in the Traffic Profile moving trough Traffic Profile is installed, Traffic Profile is provided with the metering orifice consistent with the valve hole axis, in the valve plate moving trough valve plate is installed, valve plate is connected with the valve plate mobile controller, in the switch plate moving trough switch plate is installed, switch plate is connected with the switch plate mobile controller, described Traffic Profile has one at least, and the section area difference of the metering orifice on every.Traffic Profile in the Traffic Profile moving trough can be changed by flow as required.
Metering orifice on the Traffic Profile can have different sectional shapes, as rectangle, parabola shaped and del etc.
At valve plate and switch plate place position transducer is installed all, the place is equipped with flow transducer at valve hole, and position transducer all is connected with a PLC programmable controller or display floater with flow transducer.
Valve plate mobile controller and switch plate mobile controller all can adopt automatic structure, comprise actuating motor and driving mechanism, and actuating motor is connected with the PLC programmable controller, and driving mechanism one end is connected with actuating motor, and an end is connected with valve plate or switch plate.Position transducer is with the amount of exercise feedback of valve plate bar and switch plate stem, and actuating motor is according to the amount of movement of feedback quantity modulating valve plate stem and switch plate stem then.Flow transducer carries out automatic control and adjustment with the feedback information of valve body flow by PLC.
The valve plate mobile controller also can adopt the handle that directly is connected with valve plate or switch plate with the switch plate mobile controller, manually controls.Move the control valve body flow by handle control valve plate or switch plate, on display floater, show amount of movement information and valve body flow information, make things convenient for handle to regulate.
The present invention regulates the flow of modulating valve by the different flow template, realize required Flow characteristics, promptly when work, only need according to different working environments and job requirement, put into required Traffic Profile, switch plate is opened, controlled valve plate then and move, realize required Flow characteristics, simple in structure and easy replacing, easy to use.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is first kind of structural representation of Traffic Profile among the present invention.
Fig. 3 is second kind of structural representation of Traffic Profile.
Fig. 4 is the third structural representation of Traffic Profile.
Fig. 5 is Automatic Control Theory figure of the present invention.
Fig. 6 is manual control principle figure of the present invention.
Wherein: 1, valve seat, 2, the valve plate mobile controller, 3, valve moves cell body, 4, valve plate bar, 5, moving trough lid, 6, Traffic Profile groove lid, 7, Traffic Profile bar, 8, the switch plate stem, 9, the switch plate mobile controller, 10, switch plate, 11, the switch plate moving trough, 12, Traffic Profile, 13, Traffic Profile moving trough, 14, valve plate, 15, the valve plate moving trough, 16, through hole, 17, valve hole, 18, metering orifice.
Embodiment
Embodiment:
As shown in Figure 1, flow adjustable regulating valve of the present invention mainly moves cell body 3, valve plate 14, switch plate 10 and Traffic Profile 12 by valve seat 1, valve and forms, be provided with valve hole 17 in the valve seat 1, the valve that is equipped with on the sidewall of valve seat 1 in the valve hole 17 that inserts valve seat 1 moves cell body 3.The bottom that valve moves cell body 3 is provided with the through hole 16 consistent with valve hole 17 axis, and valve moves and is provided with Traffic Profile moving trough 13, valve plate moving trough 15 and switch plate moving trough 11 in the cell body 3.Traffic Profile 12 is installed in the Traffic Profile moving trough 13, Traffic Profile 12 is provided with Traffic Profile bar 7, Traffic Profile bar 7 is connected on the Traffic Profile groove lid 6 by screw, Traffic Profile groove lid 6 is connected on the moving trough lid 5 by screw, and moving trough lid 5 is connected the upper end that valve moves cell body 3 by screw.Open moving trough and cover 5 replaceable valve plates 14, Traffic Profile 12 and switch plate 10, only change Traffic Profile 12, as long as open Traffic Profile groove lid 6 as need.Traffic Profile 12 is provided with the metering orifice 18 consistent with valve hole 17 axis, and metering orifice 18 can have different sectional shapes, rectangle as shown in Figure 2, del parabola shaped and shown in Figure 4 shown in Figure 3 etc.Traffic Profile 12 among the present invention is provided with polylith, and the area difference of every metering orifice 18 makes every Traffic Profile 12 have different flows.Valve plate 14 is installed in the valve plate moving trough 15, valve plate bar 4 is installed on the valve plate 14, valve plate bar 4 is connected with the valve plate control gear 2 that valve moves cell body 3 outsides, moves up and down by valve plate controller 2 drive valve plate bars 4 and valve plate 14, regulates the flow of whole modulating valve.Valve plate control gear 2 can adopt automatic structure or manual structure, automatically structure as shown in Figure 5, comprise actuating motor and driving mechanism, actuating motor is connected with the PLC programmable controller, driving mechanism can be the gear rack transmission, and gear is installed on the actuating motor, and tooth bar is installed on the valve plate bar 4, manually structure as shown in Figure 6, manually structure directly adopts the handle that is connected with valve plate bar 4.Switch plate 10 is installed in the switch plate moving trough 11, switch plate stem 8 is installed on the switch plate 10, switch plate stem 8 is connected with the switch plate controller 9 that valve moves cell body 3 outsides, moves up and down by switch plate control gear 9 drive switch plate stems 8 and switch plate 10.Switch plate 10 shields, and opens flow control valve when promptly working, and closes flow control valve during shutdown.Switch plate control gear 9 is the same with the structure of valve plate control gear 2.
The present invention can adopt automatic or manual to control, its Automatic Control Theory by operation panel control PLC, passes to actuating motor respectively with control signal as shown in Figure 5, the motion of control valve plate stem 4 and switch plate stem 8, valve plate bar 4 drives valve plate 14 and moves the control valve body flow; Switch plate stem 8 drives switch plate 10 and moves.At valve plate bar 4 and switch plate stem 8 places position transducer is installed respectively, position transducer is with the amount of exercise feedback of valve plate bar 4 and switch plate stem 8, and actuating motor is according to the amount of movement of feedback quantity modulating valve plate stem 4 and switch plate stem 8 then.17 places are equipped with flow transducer at valve hole, with the feedback information of valve body flow, carry out regulating and controlling by PLC.Manually control principle figure as shown in Figure 6, by the handle motion of control valve plate stem 4 and switch plate stem 8 respectively, valve plate bar 4 drives valve plates 14 and moves the control valve body flow; Switch plate stem 8 drives switch plate 10 and moves.At valve plate bar and switch plate stem place position transducer is installed respectively, position transducer shows amount of movement information with the amount of exercise feedback of valve plate bar and switch plate stem on display floater.17 places are equipped with flow transducer at valve hole, with the feedback information of valve body flow, show the valve body flow information on display floater, make things convenient for handle to regulate.
Before the above-mentioned flow adjustable regulating valve work, switch plate 10 and valve plate 14 are in closed condition, and whole modulating valve is blocked, and stop the valve inner fluid to flow.When work, at first start switch plate controller 9 switch plate 10 is opened, move by valve plate controller 2 control valve plates 14 then, the fluid in the modulating valve flows to opposite side through valve plate 14 places of opening and Traffic Profile 14.
The present invention regulates the flow of modulating valve by using different Traffic Profile 12, realize required Flow characteristics, promptly when work, only need according to different working environments and job requirement, put into required Traffic Profile 12, by switch plate controller 9 switch plate 10 is opened, and then control valve plates 14 by valve plate controller 2 and move, realize required Flow characteristics.When needs change the Flow characteristics of modulating valve, need valve plate 14 and switch plate 10 be closed by valve plate controller 2 and switch plate controller 9, Traffic Profile groove lid 6 is opened, change the Traffic Profile 9 in the Traffic Profile moving trough 13.Move up and down the flow of regulating modulating valve by valve plate controller 2 drive valve plate bars 4 and valve plate 14.Switch plate 10 plays the safety protection effect in modulating valve.Because switch plate 10, Traffic Profile 12 and valve plate 14 can be made of general steel plate, simple in structure and easy replacing is easy to use, and the processing of the shape of Traffic Profile is also very simple, for the use of this flow adjustable regulating valve brings convenience.