CN109869363A - A kind of hydraulic intelligent control valve - Google Patents
A kind of hydraulic intelligent control valve Download PDFInfo
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- CN109869363A CN109869363A CN201910244556.8A CN201910244556A CN109869363A CN 109869363 A CN109869363 A CN 109869363A CN 201910244556 A CN201910244556 A CN 201910244556A CN 109869363 A CN109869363 A CN 109869363A
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Abstract
The invention belongs to hydraulic control valve technical fields.In order to solve the existing above problem when existing hydraulic system is using a large amount of variety classes hydraulic control valves, the invention discloses a kind of hydraulic intelligent control valves.The hydraulic intelligent control valve, including automatically controlled main valve, microprocessor and detection unit；Detection unit includes two pressure sensors, is separately fixed at entrance location and the outlet port of automatically controlled main valve, for detecting the inlet pressure and outlet pressure of automatically controlled main valve, and forms pressure detecting signal and be sent to microprocessor；Microprocessor receives pressure detecting signal and control signal, and the valve port opening size variation for controlling automatically controlled main valve is connect with automatically controlled main valve；Wherein, signal source of the control signal other than the hydraulic intelligent control valve.Hydraulic intelligent control valve of the invention, microprocessor are adjusted control to the valve port opening of automatically controlled main valve according to testing result of the detection unit to automatically controlled main valve, and the control function of different hydraulic valves is realized by way of throttling control.
Description
Technical field
The invention belongs to hydraulic control valve technical fields, and in particular to a kind of hydraulic intelligent control valve.
Background technique
Hydraulic control valve is in Hydraulic Power Transmission System or hydraulic control system for controlling fluid pressure, flow and direction
Control element.Hydraulic control valve is designed as different structure form by difference depending on the application, to realize different control function
Can, such as the pressure-control valve for controlling pressure, for controlling the flow control valve of flow, for controlling switching and flow direction
The various structure types and function such as directional control valve hydraulic control valve.
Currently, in a complete Hydraulic Power Transmission System or hydraulic control system, in order to guarantee Hydraulic Power Transmission System or
The accurate realization and stable safe operation of hydraulic control system function, it usually needs use the hydraulic control of multiple and different functions
Valve, and these hydraulic control valves are separately mounted to the different location of system, by different hydraulic control valves different time,
Control is adjusted to the pressure of oil liquid, flow and flow direction in whole system, to realize system in the movement work of different oil circuits
The safe and reliable realization of control function.
However, not only needing in this way according to the demand for control of different oil circuits in system design process respectively in different positions
Set selection and install different structure form hydraulic control valve, such as check valve, overflow valve, safety valve, throttle valve, pressure reducing valve with
And the hydraulic control valves such as sequence valve, to increase the selection workload in design process to hydraulic control valve, while also to guarantee
Different structure form control valve can be installed and be used in the same system, and in system work process, if not of the same race
The hydraulic control valve installation site mistake of class or when needing to adjust the control mode of the system, needs to stop whole system
Machine replaces hydraulic control valve, to increase replacement workload, and tampers system repeatedly and will cause the bad stability of system, example
If oil circuit leakproofness is deteriorated, to reduce the job stability and service life of system.
Summary of the invention
When in order to solve to need in existing hydraulic system using a large amount of different structure form hydraulic control valves it is existing on
Problem is stated, the invention proposes a kind of hydraulic intelligent control valves.The hydraulic intelligent control valve, including automatically controlled main valve, microprocessor
And detection unit；The detection unit include two pressure sensors, be separately fixed at the automatically controlled main valve entrance location and
Outlet port for detecting the inlet pressure and outlet pressure of the automatically controlled main valve, and forms pressure detecting signal and is sent to institute
State microprocessor；The microprocessor receives pressure detecting signal and control signal, and connect with the automatically controlled main valve for controlling
Make the valve port opening size variation of the automatically controlled main valve；Wherein, the control signal is other than the hydraulic intelligent control valve
Signal source.
Preferably, the automatically controlled main valve selects proportioning valve or servo valve.
Preferably, the pressure sensor uses damascene structures, is fixed on the valve inner of the automatically controlled main valve.
Preferably, the control signal is that valve port opening controls signal；The microprocessor receives valve port opening control letter
Number, and the valve port opening size variation that signal directly controls the automatically controlled main valve is controlled according to valve port opening, realize throttling control
System.
Preferably, the control signal is that valve port opening controls signal；The microprocessor receives valve port opening control letter
Number, and signal and pressure detecting signal are controlled according to valve port opening, the valve port opening size variation of the automatically controlled main valve is controlled,
Realize one-way throttle control；Wherein, when inlet pressure is greater than outlet pressure, the valve port opening of the automatically controlled main valve is opened with valve port
Degree control signal intensity, conversely, the valve port opening of the automatically controlled main valve keeps maximum.
Preferably, the control signal is that valve port opening controls signal；The microprocessor receives valve port opening control letter
Number, and signal and pressure detecting signal are controlled according to valve port opening, the valve port opening size variation of the automatically controlled main valve is controlled,
Realize speed regulating control；Wherein, the valve port opening of the automatically controlled main valve controls signal intensity, the valve port opening control with valve port opening
Signal processed changes with pressure detecting signal, constant to maintain the pressure difference between inlet pressure and outlet pressure to stablize.
Preferably, the control signal is that preset pressure controls signal；The microprocessor receives preset pressure control letter
Number, and signal and inlet pressure detection signal are controlled according to preset pressure, control the valve port opening size of the automatically controlled main valve
Overflow and sequential control are realized in variation；Wherein, when preset pressure is greater than inlet pressure, the valve port opening of the automatically controlled main valve
Zero is remained, conversely, the valve port opening of the automatically controlled main valve is kept it turned on.
Preferably, the control signal is that preset pressure controls signal and valve port opening controls signal；The microprocessor
It receives preset pressure control signal and valve port opening controls signal, and signal and outlet pressure detection are controlled according to preset pressure
Signal controls the valve port opening size variation of the automatically controlled main valve, realizes Decompression Controlling；Wherein, the valve port of the automatically controlled main valve
Aperture controls signal intensity with valve port opening, and the valve port opening control signal changes with outlet pressure, to maintain outlet pressure
Stablize constant.
Preferably, the control signal is that preset pressure controls signal, valve port opening controls signal and acquisition pressure control
Signal；The microprocessor receives valve port opening control signal, preset pressure control signal, acquisition pressure controling signal and pressure
Signal is detected, and signal, preset pressure control signal, acquisition pressure controling signal and pressure are controlled according to valve port opening and examined
Signal is surveyed, the valve port opening size variation of the automatically controlled main valve is controlled, realizes balance control；Wherein, when inlet pressure be less than etc.
When outlet pressure, the valve port opening of the automatically controlled main valve keeps maximum, when inlet pressure is greater than outlet pressure and preset pressure
When greater than acquisition pressure, the valve port opening of the automatically controlled main valve remains zero, when inlet pressure is greater than outlet pressure and default pressure
When power is less than or equal to acquisition pressure, the valve port opening of the automatically controlled main valve is controlled signal by valve port opening and controls and keep constant
Flow passes through.
It is further preferred that the acquisition pressure controling signal is derived from the oil port pressure of executing agency.
Hydraulic intelligent control valve of the invention, brings advantageous effects below:
1, in hydraulic intelligent control valve of the invention, the inlet pressure of automatically controlled main valve and outlet are pressed by detection unit
Power is measured in real time, and sends the control of corresponding valve port opening signal to automatically controlled main valve according to pressure sensing result by microprocessor
Part processed, the spool for controlling automatically controlled main valve are acted, to change the valve port opening size of automatically controlled main valve, adjust automatically controlled main valve
Throttling control effect, and then change the inlet pressure and outlet pressure of automatically controlled main valve.At this point, by microprocessor to different pressures
After force signal is analyzed and processed, it is only necessary to send corresponding valve port opening control letter to the automatically controlled main valve of unified structure form
Number carry out throttling control, so that it may realize the control function of different structure form hydraulic valve.In this way, not only in the design of hydraulic system
In the process, it is only necessary to select the hydraulic intelligent control valve of the unified structure form and cooperate different software controlling strategies
The control function of a variety of different structure form hydraulic valves is realized, thus the selection during reducing design of Hydraulic System to hydraulic valve
Workload, and in system operation engineering, it is only necessary to adjust the function of the i.e. changeable hydraulic intelligent control valve of software controlling strategies
It can act on, so as to directly adjust the control action of hydraulic system, greatly expand the control class that hydraulic system may be implemented
Type improves the control flexibility to hydraulic system.
2, hydraulic intelligent control valve of the invention can reduce the hardware class of current control valve, the hardware of simplified control valve
Design, conducive to the reduction of manufacturing cost.
Detailed description of the invention
Fig. 1 is the composed structure schematic diagram of hydraulic intelligent control valve of the present invention；
Fig. 2 is the structural relation schematic diagram of hydraulic intelligent control valve of the present invention；
Fig. 3 is the graphical symbol schematic diagram of hydraulic intelligent control valve in embodiment 1；
Fig. 4 is the graphical symbol schematic diagram of hydraulic intelligent control valve in embodiment 2；
Fig. 5 is the graphical symbol schematic diagram of hydraulic intelligent control valve in embodiment 3；
Fig. 6 is the graphical symbol schematic diagram of hydraulic intelligent control valve in embodiment 4；
Fig. 7 is the graphical symbol schematic diagram of hydraulic intelligent control valve in embodiment 5；
Fig. 8 is the graphical symbol schematic diagram of hydraulic intelligent control valve in embodiment 6.
Specific embodiment
It describes in detail with reference to the accompanying drawings and examples to the technical solution in the present invention.
Referring to figs. 1 and 2, hydraulic intelligent control valve of the invention, including automatically controlled main valve 1, microprocessor 2 and detection
Unit 3.Wherein, detection unit 3 include two pressure sensors 31, and be separately fixed at automatically controlled main valve 1 entrance location and
Outlet port, for detecting the inlet pressure and outlet pressure of automatically controlled main valve 1.Microprocessor 2 includes input unit 21, output list
Member 22 and control unit 23, wherein input unit 21 is connect with detection unit 3 for receiving pressure detecting signal, control unit
23 receive control signal, and output unit 22 connect the valve port opening size for adjusting automatically controlled main valve 1 with automatically controlled main valve 1.
Preferably, it is attached between microprocessor 2 and automatically controlled main valve 1 by driving amplifier 4, to guarantee micro process
The control signal that device 2 issues can carry out action control to automatically controlled main valve 1 with accurate stable.
In the present invention, the received control signal of control unit 23, either in advance in the control of entire hydraulic system
The control signal that input is preset in terminal (such as computer) is also possible to testing result and liquid according to detection unit 3
The adjustment requirement of pressure system is given the control signal of input by operator in real time, it might even be possible to is controlled the hydraulic intelligent
Element (such as hydraulic cylinder as executing agency) other than valve carries out detected testing result signal.
Preferably, automatically controlled main valve 1 selects proportioning valve or servo valve, such as 2/2-way proportioning valve or high speed in the present invention
Switch proportional pilot valve, by control be input to automatically controlled main valve signal intensity can the opening size to valve port continuously controlled
System, to realize being precisely controlled to the valve port area of automatically controlled main valve.
In addition, two pressure sensors 31 in detection unit 3 of the present invention are both preferably damascene structures, and directly solid
It is scheduled on the valve inner of master control main valve 1, the throttle orifice formed between spool and valve body carries out close to greatest extent, guarantee
To the detection accuracy of oil liquid pressure before and after throttle orifice.
The use control of hydraulic intelligent control valve of the present invention is introduced below with reference to embodiment.
Embodiment 1
In conjunction with shown in Fig. 1 to Fig. 3, in the present embodiment, automatically controlled main valve selects high-speed switch proportional pilot valve, and the ratio
The spool of example pilot valve is acted under the collective effect of proportion electro-magnet active force and acting force of the spring, to realize to valve
Size adjustment of the mouth aperture between closing and standard-sized sheet.
In the present embodiment, control signal is valve port opening control signal.The control unit of microprocessor receives valve port and opens
Degree control signal, and directly control the valve port opening variation of automatically controlled main valve accordingly is completed to passing through electricity thus according to flow formula
The control for controlling the fluid flow of main valve, realizes the throttle valve control function of the automatically controlled main valve.
Wherein, flow formula corresponding to hydraulic throttle element are as follows:
In formula, Q (τ)-flow changes with the variation that valve is open
A (τ)-throttle valve opening area, it is directly proportional to duty ratio
Cd- throttle flow rate coefficient
ρ-oil quality density
P1- inlet pressure
P2- outlet pressure
In the present embodiment, ignore inlet pressure P1With outlet pressure P2Influence, directly opened by microprocessor according to valve port
Degree control signal carries out ratio control to the electromagnet of automatically controlled main valve, to overcome acting force of the spring, driving spool is mobile to be changed
The open or close range size of valve port, adjustment pass through the fluid flow of the automatically controlled main valve, realize that the throttling to fluid controls.Wherein, root
According to the difference that system control requires, valve port opening control signal can be a certain fixation that microprocessor is input to by computer
Value, be also possible at any time or pressure adjustment variation function.
Embodiment 2
In conjunction with shown in Fig. 1 and Fig. 4, using the automatically controlled main valve of structure type same as Example 1, difference is: control
Signal includes valve port opening control signal and pressure detecting signal.The control unit of microprocessor receives valve port opening and controls signal
And pressure detecting signal, and according to the relationship between inlet pressure and outlet pressure, the valve port opening for controlling automatically controlled main valve becomes
Change.Wherein, as inlet pressure P1Greater than outlet pressure P2When, the valve port opening of automatically controlled main valve controls signal according to valve port opening
Change and change, conversely, working as inlet pressure P1Less than or equal to outlet pressure P2When, the valve port opening of automatically controlled main valve is in maximum shape
State, i.e., automatically controlled main valve keeps channel status, to realize the control function of one-way throttle valve.In the present embodiment, according to system
Control need, be input to microprocessor valve port opening control signal, either the aperture of automatically controlled main valve is maintained spy
The fixed value for determining size, be also possible to for the aperture of automatically controlled main valve being set as at any time or Pressure behaviour variation variation function.
In the present embodiment, the inlet pressure and outlet pressure for the automatically controlled main valve that microprocessor is detected according to pressure sensor
Relationship between power controls signal by inputting corresponding valve port opening to automatically controlled main valve, changes the valve port opening of automatically controlled main valve
Size, to realize to the control by automatically controlled main valve fluid.At this point, script is directly controlled the unidirectional of realization by pressure signal
Throttling function is adjusted to be completed by the throttling control of the big minor adjustment of valve port opening, to make the hydraulic intelligent control of the structure type
Valve processed completes the control function of one-way throttle valve.
Embodiment 3
Referring to figure 1 and figure 5, using the automatically controlled main valve of structure type same as Example 1, difference is: control
Signal includes valve port opening control signal and pressure detecting signal.The control unit of microprocessor receives valve port opening and controls signal
And pressure detecting signal, and according to the relationship between inlet pressure and outlet pressure, the valve port opening for controlling automatically controlled main valve becomes
Change.Wherein, valve port opening control signal and inlet pressure P1With outlet pressure P2Between pressure difference it is associated, and microprocessor
According to inlet pressure P1With outlet pressure P2Between pressure difference variation, adjust valve port opening control signal input to automatically controlled main valve,
Make inlet pressure P1With outlet pressure P2Between pressure difference remain unchanged, to realize the control function of speed governing valve.In the present embodiment
In, inlet pressure P1With outlet pressure P2Between pressure difference can be set according to the demand for control of system, and thus according to flow
Formula determines the valve port opening signal for being input to automatically controlled main valve.
In the present embodiment, by sending valve associated with pressure difference between inlet pressure and outlet pressure to microprocessor
Mouth opening control signal, and the pressure difference between the inlet pressure and outlet pressure obtained by microprocessor according to real-time detection closes
System, adjustment is sent to the signal for controlling automatically controlled main valve in real time, so that the inlet pressure of automatically controlled main valve and outlet pressure finally be adjusted
Whole to fixed pressure differential condition.At this point, the sequential control that will be directly controlled originally by pressure difference between inlet pressure and outlet pressure
Function is adjusted to be completed by the throttling control of the big minor adjustment of valve port opening, to make the hydraulic intelligent control valve of the structure type
Complete the control function of speed governing valve.
Embodiment 4
In conjunction with shown in Fig. 1 and Fig. 6, using the automatically controlled main valve of structure type same as Example 1, difference is: control
Signal includes preset pressure control signal.The control unit of microprocessor can receive a preset pressure control signal P in advance0,
And signal P is controlled according to the preset pressure0With inlet pressure P1Between relationship, control the valve port opening size of automatically controlled main valve
Variation.Wherein, as preset pressure P0Greater than inlet pressure P1When, the valve port opening of automatically controlled main valve remains zero, i.e., automatically controlled main valve is protected
Off state is held, as preset pressure P0Less than or equal to inlet pressure P1When, the valve port opening of automatically controlled main valve is kept it turned on, i.e.,
Automatically controlled main valve keeps channel status, to realize the control function of overflow valve and sequence valve.It is wanted according to the design of system and control
It asks, when automatically controlled main valve keeps channel status, the aperture of valve port both can directly be maintained at maximum rating, can also maintain in office
Meaning opening size.
In the present embodiment, control signal by inputting preset pressure to microprocessor, and by microprocessor according to
Relationship between preset pressure and inlet pressure controls the valve port opening size variation of automatically controlled main valve, thus to automatically controlled master is flowed through
The fluid of valve is controlled.At this point, being adjusted to the relief function directly controlled by inlet pressure and sequential flowing function by valve
The throttling that mouthful opening size is adjusted controls to complete, so that the hydraulic intelligent control valve of the structure type be made to complete overflow valve and suitable
The control function of sequence valve.
In addition, in the present embodiment, according to the structure type of selected automatically controlled main valve, preset pressure control signal be exactly with
The corresponding control signal of spring preset pressure, should according to the difference for selecting automatically controlled main valve structure form equally in his embodiment
It can be other signals that preset pressure, which controls signal, such as when automatically controlled main valve selects hydraulic control structure type, the preset pressure control
Signal processed is exactly control signal corresponding with control-oil pressure.
Embodiment 5
In conjunction with shown in Fig. 1 and Fig. 7, using the automatically controlled main valve of structure type same as Example 1, difference is: control
Signal includes preset pressure control signal.The control unit of microprocessor can receive a preset pressure control signal P in advance0,
And signal P is controlled according to the preset pressure0With outlet pressure P2Between relationship, control the valve port opening size of automatically controlled main valve
Variation.Wherein, the valve port opening of automatically controlled main valve is changed with valve port opening control signal, until by outlet pressure P2Adjust to
With preset pressure P0It is equal and when remaining unchanged until, to realize the control function of pressure reducing valve.In the present embodiment, pressure is preset
Power P0For the preset pressure of spring.
In the present embodiment, control signal by inputting preset pressure to microprocessor, and by microprocessor according to
Relationship between preset pressure and outlet pressure controls the valve port opening size variation of automatically controlled main valve, thus by automatically controlled main valve
Outlet pressure is controlled in state associated with preset pressure.At this point, the Decompression Controlling function that script is controlled by outlet pressure
It is adjusted to be realized by the throttling control of the big minor adjustment of valve port opening, so that the hydraulic intelligent control valve of the structure type be made to realize
The control function of pressure reducing valve.
Embodiment 6
In conjunction with shown in Fig. 1 and Fig. 8, using the automatically controlled main valve of structure type same as Example 1, difference is: control
Signal includes valve port opening control signal, preset pressure control signal P0With acquisition pressure controling signal P3.The control of microprocessor
Unit receives valve port opening control signal, preset pressure controls signal P0, acquisition pressure controling signal P3, inlet pressure P1With go out
Mouth pressure P2, and according to preset pressure P0, acquisition pressure P3, inlet pressure P1And outlet pressure P2Between correlation,
Control the valve port opening size variation of automatically controlled main valve.Wherein, as inlet pressure P1Less than or equal to outlet pressure P2When, automatically controlled main valve
Valve port opening be maximum rating, i.e. automatically controlled main valve keeps channel status；As inlet pressure P1Greater than outlet pressure P2And default pressure
Power P0Greater than acquisition pressure P3When, the valve port opening of automatically controlled main valve is zero, i.e., automatically controlled main valve keeps off state；Work as inlet pressure
P1Greater than outlet pressure P2And preset pressure P0Less than or equal to acquisition pressure P3When, the valve port opening of automatically controlled main valve is with valve port opening
It controls signal intensity and the flow kept constant passes through, to realize the control function of balanced valve.In the present embodiment, pressure is preset
Power P0For the preset pressure of spring；Acquire pressure P3It is derived from the oil port pressure of executing agency, such as the rod chamber hydraulic fluid port of hydraulic cylinder
Locate pressure at pressure or rodless cavity hydraulic fluid port, to form the control form of long-range external control balanced valve.
In the present embodiment, by inputting preset pressure control signal to microprocessor, acquiring pressure controling signal, and by
Microprocessor controls automatically controlled main valve according to the relationship between preset pressure, acquisition pressure and inlet pressure and outlet pressure
Valve port opening size variation, to control the fluid for flowing through the automatically controlled main valve.At this point, will be originally by multiple pressure signals
The equilibrium function mutually controlled is adjusted to be realized by the throttling control of the big minor adjustment control of valve port opening, to make the structure shape
The hydraulic intelligent control valve of formula realizes balanced valve to the balance control function for executing structure loop.
Claims (10)
1. a kind of hydraulic intelligent control valve, which is characterized in that including automatically controlled main valve, microprocessor and detection unit；The detection
Unit includes two pressure sensors, entrance location and the outlet port of the automatically controlled main valve is separately fixed at, for detecting
The inlet pressure and outlet pressure of automatically controlled main valve are stated, and forms pressure detecting signal and is sent to the microprocessor；Micro- place
It manages device and receives pressure detecting signal and control signal, and connect the valve port for controlling the automatically controlled main valve with the automatically controlled main valve
Opening size variation；Wherein, signal source of the control signal other than the hydraulic intelligent control valve.
2. hydraulic intelligent control valve according to claim 1, which is characterized in that the automatically controlled main valve is selected proportioning valve or watched
Take valve.
3. hydraulic intelligent control valve according to claim 1, which is characterized in that the pressure sensor uses embedded knot
Structure is fixed on the valve inner of the automatically controlled main valve.
4. hydraulic intelligent control valve described in any one of -3 according to claim 1, which is characterized in that the control signal is
Valve port opening controls signal；The microprocessor receives valve port opening and controls signal, and straight according to valve port opening control signal
The valve port opening size variation for controlling the automatically controlled main valve is connect, realizes throttling control.
5. hydraulic intelligent control valve described in any one of -3 according to claim 1, which is characterized in that the control signal is
Valve port opening controls signal；The microprocessor receives valve port opening and controls signal, and according to valve port opening control signal and
Pressure detecting signal controls the valve port opening size variation of the automatically controlled main valve, realizes one-way throttle control；Wherein, work as import
When pressure is greater than outlet pressure, the valve port opening of the automatically controlled main valve controls signal intensity with valve port opening, conversely, described automatically controlled
The valve port opening of main valve keeps maximum.
6. hydraulic intelligent control valve described in any one of -3 according to claim 1, which is characterized in that the control signal is
Valve port opening controls signal；The microprocessor receives valve port opening and controls signal, and according to valve port opening control signal and
Pressure detecting signal controls the valve port opening size variation of the automatically controlled main valve, realizes speed regulating control；Wherein, the automatically controlled master
The valve port opening of valve controls signal intensity with valve port opening, and the valve port opening control signal changes with pressure detecting signal, with
The pressure difference between inlet pressure and outlet pressure is maintained to stablize constant.
7. hydraulic intelligent control valve described in any one of -3 according to claim 1, which is characterized in that the control signal is
Preset pressure controls signal；The microprocessor receives preset pressure and controls signal, and according to preset pressure control signal and
Inlet pressure detects signal, controls the valve port opening size variation of the automatically controlled main valve, realizes overflow and sequential control；Wherein,
When preset pressure is greater than inlet pressure, the valve port opening of the automatically controlled main valve remains zero, conversely, the valve of the automatically controlled main valve
Mouth aperture is kept it turned on.
8. hydraulic intelligent control valve described in any one of -3 according to claim 1, which is characterized in that the control signal is
Preset pressure controls signal and valve port opening controls signal；The microprocessor receives preset pressure control signal and valve port opening
Signal is controlled, and signal and outlet pressure detection signal are controlled according to preset pressure, the valve port for controlling the automatically controlled main valve is opened
Size variation is spent, realizes Decompression Controlling；Wherein, the valve port opening of the automatically controlled main valve controls signal intensity, institute with valve port opening
Valve port opening control signal is stated to change with outlet pressure, it is constant to maintain outlet pressure to stablize.
9. hydraulic intelligent control valve described in any one of -3 according to claim 1, which is characterized in that the control signal is
Preset pressure controls signal, valve port opening control signal and acquisition pressure controling signal；The microprocessor receives valve port opening
Signal, preset pressure control signal, acquisition pressure controling signal and pressure detecting signal are controlled, and is controlled according to valve port opening
Signal, preset pressure control signal, acquisition pressure controling signal and pressure detecting signal, control the valve port of the automatically controlled main valve
Balance control is realized in opening size variation；Wherein, when inlet pressure is less than or equal to outlet pressure, the valve of the automatically controlled main valve
Mouth aperture keeps maximum, when inlet pressure is greater than outlet pressure and preset pressure is greater than pressure is acquired, the automatically controlled main valve
Valve port opening remains zero, described automatically controlled when inlet pressure is greater than outlet pressure and preset pressure is less than or equal to acquisition pressure
The valve port opening of main valve is controlled by valve port opening, and signal controls and the flow kept constant passes through.
10. hydraulic intelligent control valve according to claim 9, which is characterized in that the acquisition pressure controling signal is derived from
The oil port pressure of executing agency.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053110A (en) * | 1989-12-31 | 1991-07-17 | 太原工业大学 | Combined decompressing and speed-regulating valve by hydroelectric proportion |
| CN1053111A (en) * | 1989-12-31 | 1991-07-17 | 太原工业大学 | Combined overflowing and speed-changing valve by hydroelectric proportion |
| CN1391146A (en) * | 2002-07-23 | 2003-01-15 | 浙江大学 | Electro-hydraulic control system and method based on frequency-conversion speed regulation |
| CN101660519A (en) * | 2009-09-14 | 2010-03-03 | 浙江大学 | Electrical feedback electro-hydraulic proportional pressure flux compound control method and variable output pump |
| CN102518843A (en) * | 2011-12-08 | 2012-06-27 | 中国计量学院 | Composite control digital valve for pressure and flow rate of high-pressure gas |
| CN202360823U (en) * | 2011-12-08 | 2012-08-01 | 中国计量学院 | Digital valve for compositely controlling pressure and flow of high-pressure gas |
| CN203067880U (en) * | 2013-02-19 | 2013-07-17 | 张凡 | Diaphragm valve with adjustable pressure and flow ranges |
| CN102672271B (en) * | 2012-05-17 | 2013-10-09 | 杭州飘哲电子科技有限公司 | Saw frame feeding system with constant saw cutting force and variable feeding speed and saw frame feeding method |
| WO2016204322A1 (en) * | 2015-06-16 | 2016-12-22 | 볼보 컨스트럭션 이큅먼트 에이비 | Construction machine flow control valve |
| CN107269853A (en) * | 2017-06-27 | 2017-10-20 | 安徽中兴流体装备有限责任公司 | A kind of Multifunctional liquid valve |
| CN108386596A (en) * | 2018-04-23 | 2018-08-10 | 上海理工大学 | Multifunctional digital ratio two-port valve |
-
2019
- 2019-03-28 CN CN201910244556.8A patent/CN109869363B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053110A (en) * | 1989-12-31 | 1991-07-17 | 太原工业大学 | Combined decompressing and speed-regulating valve by hydroelectric proportion |
| CN1053111A (en) * | 1989-12-31 | 1991-07-17 | 太原工业大学 | Combined overflowing and speed-changing valve by hydroelectric proportion |
| CN1391146A (en) * | 2002-07-23 | 2003-01-15 | 浙江大学 | Electro-hydraulic control system and method based on frequency-conversion speed regulation |
| CN101660519A (en) * | 2009-09-14 | 2010-03-03 | 浙江大学 | Electrical feedback electro-hydraulic proportional pressure flux compound control method and variable output pump |
| CN102518843A (en) * | 2011-12-08 | 2012-06-27 | 中国计量学院 | Composite control digital valve for pressure and flow rate of high-pressure gas |
| CN202360823U (en) * | 2011-12-08 | 2012-08-01 | 中国计量学院 | Digital valve for compositely controlling pressure and flow of high-pressure gas |
| CN102672271B (en) * | 2012-05-17 | 2013-10-09 | 杭州飘哲电子科技有限公司 | Saw frame feeding system with constant saw cutting force and variable feeding speed and saw frame feeding method |
| CN203067880U (en) * | 2013-02-19 | 2013-07-17 | 张凡 | Diaphragm valve with adjustable pressure and flow ranges |
| WO2016204322A1 (en) * | 2015-06-16 | 2016-12-22 | 볼보 컨스트럭션 이큅먼트 에이비 | Construction machine flow control valve |
| CN107269853A (en) * | 2017-06-27 | 2017-10-20 | 安徽中兴流体装备有限责任公司 | A kind of Multifunctional liquid valve |
| CN108386596A (en) * | 2018-04-23 | 2018-08-10 | 上海理工大学 | Multifunctional digital ratio two-port valve |
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