CN107314003A - Hydraulic pressure monitoring system - Google Patents
Hydraulic pressure monitoring system Download PDFInfo
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- CN107314003A CN107314003A CN201610270634.8A CN201610270634A CN107314003A CN 107314003 A CN107314003 A CN 107314003A CN 201610270634 A CN201610270634 A CN 201610270634A CN 107314003 A CN107314003 A CN 107314003A
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- oil liquid
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- hydraulic oil
- hydraulic
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 143
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 97
- 239000002828 fuel tank Substances 0.000 claims abstract description 62
- 239000003921 oil Substances 0.000 claims abstract description 44
- 230000008676 import Effects 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 11
- 238000007634 remodeling Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000010729 system oil Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses a kind of hydraulic pressure monitoring system, including controller, temperature sensor, solenoid directional control valve and temperature-adjusting device；Temperature sensor is located at fuel tank and is electrically connected to controller, to measure the temperature of hydraulic oil liquid；Solenoid directional control valve is electrically connected to controller, and with inlet and outlet, the inlet communication of solenoid directional control valve is in the outlet of fuel tank；Temperature-adjusting device can adjust the temperature of hydraulic oil liquid；Fuel tank is communicated in the import of solenoid directional control valve, when when the temperature of hydraulic oil liquid is higher than a ceiling temperature or less than a lower limit temperature, the outlet of controller control solenoid directional control valve is communicated in fuel tank via temperature-adjusting device, when the temperature of hydraulic oil liquid is between ceiling temperature and lower limit temperature, the outlet of controller control solenoid directional control valve is in oil feed line.Hydraulic pressure monitoring system proposed by the present invention, can avoid hydraulic system from being broken down due to the temperature anomaly of its hydraulic oil liquid, improve the reliability of hydraulic system, reduce fault rate.
Description
Technical field
The present invention relates to technical field of hydraulic, supervised in particular to a kind of hydraulic pressure of hydraulic system
Control system.
Background technology
In the hydraulic system of hydraulic test, the temperature of hydraulic oil liquid and its viscosity have a direct relation, and liquid
The viscosity of hydraulic oil liquid is too high in pressure system or excessively can all cause the fault rate of hydraulic system to raise.For example,
Reachable -40 DEG C of the operating ambient temperature of aircraft deicing vehicle, it is desirable to vehicle possess low temperature continuous ability to work and compared with
Low fault rate.Often there is partial loss of function caused by hydraulic system fault in existing aircraft deicing vehicle,
Influence the normal work of vehicle.Wherein, most of hydraulic system fault is due to that oil contamination causes.Fly
Operating mode under machine deicing vehicle low temperature, makes when vehicle starts that hydraulic oil liquid viscosity is too high to cause hydraulic system fault
Increase, thus typically require that hydraulic oil liquid temperature during cold-starting in hydraulic system is increased to certain limit
Just started working when interior.During aircraft deicing vehicle continuous firing, the hydraulic oil liquid temperature of hydraulic system page is gradually
Rise, when temperature is more than 70 DEG C, temperature, which is further raised, can cause the viscosity of hydraulic oil liquid to be less than normally
Scope, influences the normal work of hydraulic system.
The content of the invention
A primary object of the present invention is to overcome at least one defect of above-mentioned prior art, and there is provided one
Plant the hydraulic pressure monitoring system that hydraulic system can be avoided to be broken down due to the temperature anomaly of its hydraulic oil liquid
System.
For achieving the above object, the present invention is adopted the following technical scheme that：
According to an aspect of the present invention there is provided a kind of hydraulic pressure monitoring system, for being arranged on hydraulic system
In to monitor hydraulic oil liquid, the hydraulic system includes oil feed line and fuel tank, wherein, the hydraulic pressure prison
Control system includes controller, temperature sensor, solenoid directional control valve and temperature-adjusting device；The temperature
Sensor is located at the fuel tank and is electrically connected to the controller, to measure the temperature of the hydraulic oil liquid；
The solenoid directional control valve is electrically connected to the controller, and with inlet and outlet, the solenoid directional control valve
Inlet communication in the outlet of the fuel tank；The temperature-adjusting device can adjust the hydraulic oil liquid
Temperature；The fuel tank is communicated in the import of the solenoid directional control valve, and the temperature of the hydraulic oil liquid is higher than one
When during ceiling temperature or less than a lower limit temperature, the controller controls the outlet warp of the solenoid directional control valve
The fuel tank is communicated in by the temperature-adjusting device, the temperature of the hydraulic oil liquid is in the ceiling temperature
When between lower limit temperature, the controller controls the outlet of the solenoid directional control valve in the fuel feeding
Pipeline.
According to one of embodiment of the present invention, the temperature-adjusting device includes being respectively communicated with institute
State the cooling device and heater between solenoid directional control valve and the fuel tank, the temperature of the hydraulic oil liquid
When during higher than a ceiling temperature or less than a lower limit temperature, the controller controls the solenoid directional control valve
The cooling device or heater are communicated in, to be radiated respectively to the hydraulic oil liquid egress selection
Cooling or heat temperature raising.
According to one of embodiment of the present invention, the outlet of the solenoid directional control valve has three outlets
Position, the controller controls the import selection of the solenoid directional control valve according to the temperature of the hydraulic oil liquid
Property be communicated in three outlets one of position, filled with being respectively communicated with the cooling device, heating
Put or oil feed line.
According to one of embodiment of the present invention, the cooling device is radiator.
According to one of embodiment of the present invention, the heater is choke valve, the choke valve
With restriction, the restriction can be to the hydraulic oil liquid heat temperature raising.
According to one of embodiment of the present invention, the aperture of the restriction is adjustable, described to adjust
The speed of hydraulic oil liquid heat temperature raising.
According to one of embodiment of the present invention, the hydraulic pressure monitoring system also includes temperature buzzer,
The temperature alarm is electrically connected to the controller, and the temperature of the hydraulic oil liquid is higher than the upper limit temperature
Degree, or during less than the lower limit temperature, the controller controls the temperature alarm alarm.
According to one of embodiment of the present invention, the hydraulic pressure monitoring system also includes cleannes and sensed
Device and pollution alarm；The cleannes sensor is located at the fuel tank and is electrically connected to the controller,
To measure the cleannes of the hydraulic oil liquid；The pollution alarm is electrically connected to the controller, described
When the cleannes of hydraulic oil liquid are less than a cleannes setting value, the controller controls the pollution alarm
Alarm.
According to one of embodiment of the present invention, the hydraulic pressure monitoring system also includes liquid level sensor
And liquid level alarm；The liquid level sensor is located at the fuel tank and is electrically connected to the controller, with
Measure the liquid level of the hydraulic oil liquid；The liquid level alarm is electrically connected to the controller, described
When the liquid level of hydraulic oil liquid is less than a liquid level setting value, the controller controls the liquid level report
Alert device alarm.
According to one of embodiment of the present invention, the import of the fuel tank is respectively communicated with the temperature
Adjusting means and a return line, the hydraulic pressure monitoring system also include clogging sensor and block alarm
Device；The clogging sensor is located at the import of the fuel tank and is electrically connected to the controller, to measure
State the hydraulic oil liquid flow of fuel tank import；The blocking warner is electrically connected to the controller, the oil
When the hydraulic oil liquid flow of case import is less than a flow setting value, the controller control is described to block alarm
Device is alarmed.
As shown from the above technical solution, the advantage and good effect of hydraulic pressure monitoring system proposed by the present invention exist
In：
Hydraulic pressure monitoring system proposed by the present invention, can send by temperature sensor measurement and to controller
The temperature information of hydraulic oil liquid.Meanwhile, sent out by controller according to said temperature information to solenoid directional control valve
Go out control signal, it is selectively communicated with the oil circuit in temperature-adjusting device or hydraulic system.Accordingly,
When hydraulic oil liquid is too high or too low for temperature, the hydraulic control system can stop the fuel tank of hydraulic system to
Oil circuit fuel feeding, and utilize temperature-adjusting device to adjust hydraulic oil liquid temperature, when proper temperature, then control
Fuel tank is to oil circuit fuel feeding.Therefore, hydraulic pressure monitoring system proposed by the present invention, can avoid hydraulic system by
Broken down in the temperature anomaly of its hydraulic oil liquid, improve the reliability of hydraulic system, reduce failure
Rate.
Brief description of the drawings
It is of the invention by being considered in conjunction with the accompanying the following detailed description to the preferred embodiment of the present invention
Various targets, feature and advantage will become apparent.Accompanying drawing is only the exemplary diagram of the present invention,
It is not necessarily drawn to scale.In the accompanying drawings, same reference represents same or similar all the time
Part.Wherein：
Fig. 1 is a kind of system schematic of hydraulic pressure monitoring system according to an illustrative embodiments；
Fig. 2 is a kind of control of the controller of hydraulic pressure monitoring system according to an illustrative embodiments
Principle framework figure.
Wherein, description of reference numerals is as follows：
10. fuel tank；101. gear pump；20. oil feed line；30. return line；301. return filter；1.
Temperature sensor；2. solenoid directional control valve；31. radiator；32. choke valve；4. cleannes sensor；5. liquid
Level sensor；6. clogging sensor；7.PLC controllers.
Embodiment
Embodying the exemplary embodiments of feature of present invention and advantage will describe in detail in the following description.Ying Li
Solution is that the present invention can have various changes in different embodiments, and it does not all depart from the present invention's
Scope, and explanation therein and accompanying drawing are inherently illustrative, and it is not used to the limitation present invention.
In being described below the different illustrative embodiments to the present invention, carry out referring to the drawings, it is described
Accompanying drawing forms the part of the present invention, and wherein shows that the achievable present invention's is multiple by way of example
Different example arrangements, system and the step of aspect.It should be understood that part, structure, example can be used
Other specified schemes of property device, system and step, and can be without departing from the scope of the invention
Carry out structural and functional modification.And, although in this specification can be used term " interior " " between "
Etc. come describe the present invention different example features and element, but these terms with this article merely for
It is convenient, for example with reference to the accompanying drawings described in example direction.Any content in this specification should not all be managed
Solve and just fallen within the scope of the present invention for the specific three dimensional direction of Structure of need.
Refering to Fig. 1, the hydraulic pressure monitoring system of the principle of the present invention can be embodied by being representatively illustrated in Fig. 1
The system schematic of system, specifically, the system schematic are to represent that the hydraulic pressure monitoring system is arranged on one
Hydraulic system attachment structure in hydraulic system.In the illustrative embodiments, liquid proposed by the present invention
It is so that the hydraulic pressure monitoring system to be arranged on further by taking aircraft deicing vehicle as an example that pressure monitoring system, which is,
Illustrated exemplified by a kind of hydraulic system of aircraft deicing vehicle.Skilled addressee readily understands that
It is, for hydraulic pressure monitoring system proposed by the present invention is arranged in the hydraulic system of various hydraulic tests, and
A variety of remodeling, addition are made to following embodiments, substitutes, delete or other changes, these
Change is still in the range of the principle of hydraulic pressure monitoring system proposed by the present invention.
As shown in figure 1, in the present embodiment, hydraulic pressure monitoring system proposed by the present invention can be used for setting
Put in the hydraulic system of aircraft deicing vehicle to monitor hydraulic oil liquid therein.The hydraulic system includes hydraulic pressure
Actuating unit and by oil communication in the fuel tank 10 of hydraulic operation device.Wherein, the hydraulic power mechanism
Can be, for example, one of hydraulic operation device of aircraft deicing vehicle, specifically such as hydraulic cylinder.Also,
The oil circuit of the hydraulic system mainly includes oil feed line 20 and return line 30.Below for the ease of description,
Only it is described with oil feed line 20, return line 30 and fuel tank 10, repeats no more relevant hydraulic operation
The structure of device.Wherein, the hydraulic pressure monitoring system mainly includes controller, temperature sensor 1, electromagnetism
Reversal valve 2, temperature-adjusting device and temperature alarm.Below in conjunction with accompanying drawing, to the hydraulic pressure monitoring system
The illustrative embodiments in above-mentioned chief component be described in detail.
As shown in figure 1, in the present embodiment, temperature sensor 1 is arranged in fuel tank 10, and the temperature
Degree sensor 1 is electrically connected to controller, to measure the temperature of the hydraulic oil liquid in fuel tank 10, to measure phase
The measured temperature answered simultaneously is transferred to controller.In the present embodiment, the temperature sensor 1 can be with excellent
Elect resistance thermometer as.It will be readily appreciated by those skilled in the art that to supervise hydraulic pressure proposed by the present invention
The temperature sensor 1 of control system can accurately measure the temperature of hydraulic oil liquid in hydraulic reservoir 10,
And the measured temperature measured is transferred to controller, and set-up mode to said temperature sensor 1 or
Type selecting makes a variety of remodeling, addition, substitutes, deletes or other changes, and these changes are still carried in the present invention
In the range of the principle of the hydraulic pressure monitoring system gone out.For example, in hydraulic pressure monitoring system proposed by the present invention
In other illustrative embodiments, the temperature sensor 1 can also select bimetallic thermometer, glass metal
The temperature measuring equipment of various other species such as thermometer body or pressure-type thermometer, is not limited thereto.
As shown in figure 1, in the present embodiment, solenoid directional control valve 2 is electrically connected to controller, and has
Inlet and outlet.Specifically, the inlet communication of the solenoid directional control valve 2 is in the outlet of fuel tank 10, and is somebody's turn to do
The fuel tank 10 of the outlet of fuel tank 10 as hydraulic system is connected to the outlet of its fuel feeding of oil feed line 20
Actuating unit is provided with pipeline between the outlet of fuel tank 10 and the import of solenoid directional control valve 2, will
Hydraulic oil liquid in fuel tank 10 is pumped into solenoid directional control valve 2.In the present embodiment, the actuating unit can be with
Preferably gear pump 101.It will be readily appreciated by those skilled in the art that for by the hydraulic oil in fuel tank 10
Liquid is exported into solenoid directional control valve 2, and above-mentioned connectivity structure or actuating unit type selecting are made it is a variety of remodeling,
Addition, replacement, deletion or other changes, these changes are still in hydraulic pressure monitoring system proposed by the present invention
In the range of principle.Meanwhile, the outlet of the solenoid directional control valve 2 has multiple outlet positions, and one of them
Outlet position is communicated in the oil feed line 20 of hydraulic system, is changed with being pumped into electromagnetism by fuel tank 10 in hydraulic oil liquid
To after valve 2, the control information fed back according to controller selects one of multiple outlet positions output liquid
Press oil liquid.Wherein, the specific of above-mentioned multiple outlet positions, i.e. the output hydraulic pressure fluid of solenoid directional control valve 2 connects
Logical structure, will be explained in following descriptions to other structures.
As shown in figure 1, in the present embodiment, temperature-adjusting device is used for the temperature for adjusting hydraulic oil liquid,
And the temperature-adjusting device mainly cooling including being respectively communicated between solenoid directional control valve 2 and the import of fuel tank 10
Device and heater.Specifically, the outlet of above-mentioned solenoid directional control valve 2 has three outlets position, point
Wei not first outlet position (middle position), second outlet position (left position) and the 3rd outlet position (right position), electricity
The control information that the import of magnetic reversal valve 2 can have controller to feed back selectively communicates with to go out in above three
One of mouth position.Wherein, first outlet position is communicated in the oil feed line 20 of hydraulic system, and second goes out
Mouthful position is communicated in thermostatic cooling device, and the 3rd outlet position be communicated in it is thermostatic
Heater.That is, the measured temperature measured is transferred to controller by temperature sensor 1, works as controller
During by contrasting the measured temperature higher than a default ceiling temperature, controller control solenoid directional control valve 2
Egress selection be communicated in cooling device, that is, control the import of solenoid directional control valve 2 to selectively communicate with
In second outlet position so that the hydraulic oil liquid exported by fuel tank 10 after the radiating and cooling of apparatus for supercooling or
It is back in fuel tank 10, when controller is by contrasting the measured temperature less than a default lower limit temperature
When, it is communicated in heater the egress selection of controller control solenoid directional control valve 2, that is, controls electromagnetism
The import of reversal valve 2 is selectively communicated with exports position in the 3rd, so that the hydraulic oil liquid exported by fuel tank 10
After the heat temperature raising of heater or it is back in fuel tank 10, when controller is surveyed by contrasting the temperature
When value is between above-mentioned ceiling temperature and lower limit temperature, controller controls the outlet of solenoid directional control valve 2
The oil feed line 20 in oil circuit is selectively communicated with, so that the hydraulic oil liquid that fuel tank 10 is exported is inputted to confession
Oil pipe line 20.It will be readily appreciated by those skilled in the art that when the temperature of hydraulic oil liquid is higher than a upper limit temperature
When spending or less than a lower limit temperature, to make controller control the outlet of solenoid directional control valve 2 to be adjusted by temperature
Regulating device is communicated in fuel tank 10, and then blocks the hydraulic oil liquid of temperature anomaly to flow into oil circuit, and passes through temperature
Adjusting means is cooled or heated up to the hydraulic oil liquid of temperature anomaly, and to above-mentioned solenoid directional control valve 2 or
Thermostatic structure makes a variety of remodeling, addition, substitutes, deletes or other changes, these changes
Change still in the range of the principle of hydraulic pressure monitoring system proposed by the present invention.
From the above, in the present embodiment, cooling device can be preferably radiator 31.Also, add
Thermal can be preferably choke valve 32, and the choke valve 32 has restriction, and the restriction can be to liquid
Liquid heat temperature raising is pressed oil, specifically, when hydraulic oil liquid is by restriction (i.e. the valve port) of choke valve 32,
Because restriction is smaller so that hydraulic oil liquid is heating up under the shear action of hydraulic pressure and restriction.
Further, the restriction is the adjustable design of aperture, to be adjusted indirectly by the aperture for adjusting restriction
The speed of hydraulic oil liquid heat temperature raising, it should be noted that choke valve 32 is to the heating efficiency of hydraulic oil liquid,
Hydraulic oil liquid flow, pressure with flowing through its restriction, and the aperture of restriction are relevant, and flow is smaller,
Pressure is higher, and valve port opening is smaller, and oil liquid temperature ramp-up rate is faster.Those skilled in the art easily manage
Solution, to carry out radiating and cooling or heat temperature raising to hydraulic oil liquid, and to above-mentioned cooling device or heating
The structure or type selecting of device make a variety of remodeling, addition, substitute, delete or other changes, these changes
Still in the range of the principle of hydraulic pressure monitoring system proposed by the present invention.
In addition, as shown in Fig. 2 in the present embodiment, controller can be preferably PLC 7,
The input of the PLC 7 is electrically connected to all kinds of sensing elements of such as temperature sensor 1, and should
The output end of PLC 7 is electrically connected to solenoid directional control valve 2 and other alarm elements.Wherein it is possible to
According to the requirement of different types of hydraulic system, PLC 7 is preset, it is specific default
Go out ceiling temperature, lower limit temperature, flow setting value, liquid level setting value and the cleannes of hydraulic oil liquid
Setting value (dustiness setting value) etc..It will be readily appreciated by those skilled in the art that for will such as hydraulic pressure
The electric signal of oil liquid temperature information is received and contrasted, and is fed back to other elements and be controlled, and to above-mentioned
The structure or type selecting of controller make a variety of remodeling, addition, substitute, delete or other changes, these changes
Change still in the range of the principle of hydraulic pressure monitoring system proposed by the present invention.
In addition, as shown in figure 1, in the present embodiment, temperature alarm is electrically connected to controller, using
It is higher than ceiling temperature in the temperature in hydraulic oil liquid, or during less than lower limit temperature, controller control temperature report
Alert device alarm.Specifically, in the present embodiment, the temperature alarm can be from buzzer, hair
The structures such as optical element or its combination, are not limited thereto.
It should be noted here that the hydraulic pressure monitoring system for showing and describing in this manual in accompanying drawing is only
Can be using an example in many kinds of hydraulic pressure monitoring systems of the principle of the invention.It should be clearly understood that
The present invention principle be only limitted to show in accompanying drawing absolutely not or this specification described in hydraulic pressure monitoring system appoint
Any part of what details or hydraulic pressure monitoring system.
For example, it is not intended to meet the principle of the present invention, as shown in figure 1, in the present embodiment,
Hydraulic pressure monitoring system proposed by the present invention also includes cleannes mechanism for monitoring, and it mainly includes cleannes and sensed
Device 4 and pollution alarm.Wherein, cleannes sensor 4 is arranged on fuel tank 10 (or oil circuit) and electricity
Controller is connected to, to measure the cleannes of hydraulic oil liquid, and the cleannes of the hydraulic oil liquid measured are believed
Breath is transferred to controller, controller is carried out above-mentioned cleannes information with a default cleannes setting value
Contrast.Also, pollution alarm is electrically connected to controller, when the cleannes measured are set less than the cleannes
During definite value, controller control pollution alarm alarm.
However, not in each embodiment of the present invention, it is necessary to set above-mentioned cleannes to monitor
Mechanism.The cleannes mechanism for monitoring can be preferably used for requiring higher liquid to the cleannes of hydraulic oil liquid
In pressure system, it is not limited thereto.
And for example, it is not intended to meet the principle of the present invention, as shown in figure 1, in the present embodiment, this
Invent propose hydraulic pressure monitoring system also include level monitoring mechanism, its mainly include liquid level sensor 5 with
And liquid level alarm.Wherein, liquid level sensor 5 is arranged in fuel tank 10 and is electrically connected to controller, with
The liquid level of hydraulic oil liquid in fuel tank 10 is measured, and the liquid level information transmission measured is extremely controlled
Device, makes controller contrast above-mentioned liquid level information with a default liquid level setting value.And
And, liquid level alarm is electrically connected to controller, when the liquid level measured is less than the liquid level setting value
When, controller control liquid level alarm alarm.
However, not in each embodiment of the present invention, it is necessary to set the liquid level of said structure
Mechanism for monitoring.It will be readily appreciated by those skilled in the art that for hydraulic oil liquid in hydraulic reservoir 10
Liquid level measure, and above-mentioned level monitoring mechanism is made it is a variety of remodeling, addition, substitute, delete
Or other changes, these changes are still in the range of the principle of hydraulic pressure monitoring system proposed by the present invention.
For another example, it is not intended to meet the principle of the present invention, as shown in figure 1, in the present embodiment, this
Inventing the hydraulic pressure monitoring system proposed also includes blocking mechanism for monitoring.From the above, fuel tank 10 has import
And outlet, and the import of fuel tank 10 is respectively communicated with temperature-adjusting device (cooling device and heater)
With the return line 30 of oil circuit, the outlet of fuel tank 10 is in the import of solenoid directional control valve 2.Wherein,
The blocking mechanism for monitoring mainly includes clogging sensor 6 (i.e. flow sensor) and blocking warner.
Wherein, clogging sensor 6 is arranged on the import of fuel tank 10 and is electrically connected to controller, to measure fuel tank
The flow of the hydraulic oil liquid of 10 imports, and the flow information measured is transferred to controller, make controller pair
Above-mentioned flow information is contrasted with a default flow setting value.Also, blocking warner is electrically connected to
Controller, when the flow measured is less than the flow setting value, controller control blocking warner alarm.
However, not in each embodiment of the present invention, it is necessary to set the blocking of said structure
Mechanism for monitoring.It will be readily appreciated by those skilled in the art that being surveyed for the flow to hydraulic system oil circuit
Amount, and a variety of remodeling, addition are made to above-mentioned blocking mechanism for monitoring, substitutes, delete or other changes,
These changes are still in the range of the principle of hydraulic pressure monitoring system proposed by the present invention.For example, in this implementation
In mode, return line 30 and the junction of the import of fuel tank 10 based on the hydraulic system oil circuit are provided with back
The structure of oil strainer 301, preferably can be arranged on the return filter 301 by the clogging sensor 6
On, but not with this limit the clogging sensor 6 the present invention other embodiment in can be arranged on
Other positions.
With reference to the detailed description of above-mentioned example embodiment, system is monitored to hydraulic pressure proposed by the present invention below
The concrete operating principle being monitored to hydraulic system of uniting and flow are further described.
As depicted in figs. 1 and 2, in the present embodiment, gear pump 101 is used as the hydraulic pressure monitoring system
Actuating unit.In the hydraulic work system, temperature sensor 1 leads to the temperature information of hydraulic oil liquid
Cross electric signal and be sent to PLC inputs.When the temperature of the hydraulic oil liquid in its fuel tank 10 is in normal work
During 0 DEG C~55 DEG C of scope, i.e., lower limit temperature and ceiling temperature are preset as 0 DEG C and 55 DEG C, PLC controls respectively
Device 7 processed sends oil pump off-load signal, to control first outlet position (i.e. middle position) work of solenoid directional control valve 2
Make, gear pump 101 is via solenoid directional control valve 2 to the off-load of oil feed line 20 of oil circuit, and hydraulic system is normal
Work.When hydraulic system oil liquid temperature is higher than 55 DEG C, PLC 7 sends oil temperature alarm signal,
And temperature control loop cooling signal is sent to solenoid directional control valve 2, to control the second outlet of solenoid directional control valve 2 position
(i.e. left position) works, and hydraulic oil liquid returns to fuel tank 10 after being cooled down by radiator 31, works as hydraulic oil liquid
When temperature is less than 45 DEG C, PLC 7 sends oil pump off-load signal, to control solenoid directional control valve 2 the
One outlet position work, gear pump recovers off-load, and oil liquid temperature stops reduction, and hydraulic system recovers normal work
Make state.When the temperature of the hydraulic oil liquid in hydraulic reservoir 10 is less than 0 DEG C, PLC 7
Oil temperature alarm signal is sent, and temperature control loop heating signal, PLC are sent to solenoid directional control valve 2
The 7 control outlet of solenoid directional control valve 2 the 3rd position (i.e. right position) work, hydraulic oil liquid passes through choke valve 32
Restriction returns to fuel tank 10, and hydraulic oil liquid is raised by temperature during restriction, and the aperture of regulation restriction can
To adjust the ramp-up rate of hydraulic oil liquid temperature, when the temperature of hydraulic oil liquid is higher than 10 DEG C, PLC controls
Device 7 sends oil pump off-load signal, and to control the first outlet of solenoid directional control valve 2 position to work, gear pump recovers
Off-load, oil liquid temperature tops out, and hydraulic system recovers normal operating conditions.
Further, when the hydraulic oil liquid temperature of hydraulic reservoir 10 is less than 0 DEG C or higher than 55 DEG C,
The output end output electric signal control temperature alarm alarm of PLC 7, points out operator's hydraulic oil
The temperature anomaly of liquid, need to wait for hydraulic oil liquid temperature recover it is normal after hydraulic system just can normal work again
Make.In addition, cleannes sensor 4 is installed on the return line 30 of hydraulic system oil circuit with bypass mode,
The hydraulic oil liquid cleannes of hydraulic system are measured, and hydraulic oil liquid cleannes information is transmitted by electric signal
To PLC inputs.If hydraulic pressure cleannes exceed setting value, PLC 7 sends oil contamination
Alarm signal points out operator to change hydraulic oil to control oil contamination alarm equipment alarm.Return filter
Clogging sensor 6 is installed, can blocking (i.e. flow information) electric signal, to be sent to PLC defeated on 301
Enter end.When a jam does occur, PLC 7 sends blocking alarm signal to control blocking warner report
It is alert, point out cleaning or change filter core.Liquid level sensor 5 can believe the liquid level of hydraulic oil liquid in fuel tank 10
Breath is sent to PLC inputs by electric signal.If liquid level exceedes or less than setting value, PLC
Controller 7 sends mailbox also for alarm signal to control liquid level alarm to alarm, and points out operator observation liquid
Simultaneously take respective handling measure in position.
In summary, the advantage and good effect of hydraulic pressure monitoring system proposed by the present invention are：
Hydraulic pressure monitoring system proposed by the present invention, can send by temperature sensor measurement and to controller
The temperature information of hydraulic oil liquid.Meanwhile, sent out by controller according to said temperature information to solenoid directional control valve
Go out control signal, it is selectively communicated with the oil circuit in temperature-adjusting device or hydraulic system.Accordingly,
When hydraulic oil liquid is too high or too low for temperature, the hydraulic control system can stop the fuel tank of hydraulic system to
Oil circuit fuel feeding, and utilize temperature-adjusting device to adjust hydraulic oil liquid temperature, when proper temperature, then control
Fuel tank is to oil circuit fuel feeding.Therefore, hydraulic pressure monitoring system proposed by the present invention, can avoid hydraulic system by
Broken down in the temperature anomaly of its hydraulic oil liquid, improve the reliability of hydraulic system, reduce failure
Rate.
Exemplary implementation that is described in detail above and/or illustrating hydraulic pressure monitoring system proposed by the present invention
Mode.But embodiments of the present invention are not limited to particular implementation as described herein, on the contrary, each
The part and/or step of embodiment can be only with other parts as described herein and/or step
Stand and be used separately.The each part and/or each step of one embodiment can also be implemented with other
The other parts and/or step of mode are used in combination.Introducing described here and/or diagram want
Element/part/is when waiting, and term " one ", " one " and " above-mentioned " etc. are to represent having one
Or multiple key element/parts/etc..Term "comprising", " comprising " and " having " are to represent out
Put the meaning being included of formula and refer to that the key element/part/except listing also may be present in addition to waiting
Other key element/part/etc..In addition, term " first " in claims and specification,
" second " and " the 3rd " etc. only use as mark, are not the numerical limits to its object.
Although being retouched according to different specific embodiments to hydraulic pressure monitoring system proposed by the present invention
State, but it will be recognized by those skilled in the art can be in the spirit and scope of the claims to the present invention's
Implementation is modified.
Claims (10)
1. a kind of hydraulic pressure monitoring system, for being arranged in hydraulic system to monitor hydraulic oil liquid, the liquid
Pressure system includes oil feed line (20) and fuel tank (10), it is characterised in that the hydraulic pressure monitoring system includes：
Controller；
Temperature sensor (1), located at the fuel tank (10) and is electrically connected to the controller, described to measure
The temperature of hydraulic oil liquid；
Solenoid directional control valve (2), is electrically connected to the controller, the inlet communication of the solenoid directional control valve (2) in
The outlet of the fuel tank (10)；And
Temperature-adjusting device, can adjust the temperature of the hydraulic oil liquid；
When the temperature of the hydraulic oil liquid is higher than a ceiling temperature or less than a lower limit temperature, the control
Device controls the outlet of the solenoid directional control valve (2) to be communicated in the fuel tank via the temperature-adjusting device
(10) when, the temperature of the hydraulic oil liquid is between the ceiling temperature and lower limit temperature, the controller
The outlet of the solenoid directional control valve (2) is controlled in the oil feed line.
2. hydraulic pressure monitoring system according to claim 1, it is characterised in that the temperature adjustment dress
Put the cooling device including being respectively communicated between the solenoid directional control valve (2) and the fuel tank (10) and heating
Device, when when the temperature of the hydraulic oil liquid is higher than a ceiling temperature or less than a lower limit temperature, the control
Device processed is communicated in the cooling device or heating dress with controlling the egress selection of the solenoid directional control valve (2)
Put, with respectively to the hydraulic oil liquid radiating and cooling or heat temperature raising.
3. hydraulic pressure monitoring system according to claim 2, it is characterised in that the solenoid directional control valve
(2) outlet has three outlets position, and the controller is controlled described according to the temperature of the hydraulic oil liquid
The import of solenoid directional control valve (2) is selectively communicated with exports one of position in described three, to connect respectively
The logical cooling device, heater or oil feed line.
4. hydraulic pressure monitoring system according to claim 2, it is characterised in that the cooling device is
Radiator (31).
5. hydraulic pressure monitoring system according to claim 2, it is characterised in that the heater is
Choke valve (32), the choke valve (32) has restriction, and the restriction can add to the hydraulic oil liquid
Heat heating.
6. hydraulic pressure monitoring system according to claim 5, it is characterised in that the restriction is opened
Degree is adjustable, to adjust the speed of the hydraulic oil liquid heat temperature raising.
7. the hydraulic pressure monitoring system according to any one of claim 1~6, it is characterised in that also include：
Temperature alarm, is electrically connected to the controller, and the temperature of the hydraulic oil liquid is higher than the upper limit
Temperature, or during less than the lower limit temperature, the controller controls the temperature alarm alarm.
8. the hydraulic pressure monitoring system according to any one of claim 1~6, it is characterised in that also include：
Cleannes sensor (4), located at the fuel tank (10) and is electrically connected to the controller, to measure
State the cleannes of hydraulic oil liquid；And
Pollution alarm, is electrically connected to the controller, the cleannes of the hydraulic oil liquid are less than a cleaning
When spending setting value, the controller controls the pollution alarm alarm.
9. the hydraulic pressure monitoring system according to any one of claim 1~6, it is characterised in that also include：
Liquid level sensor (5), located at the fuel tank (10) and is electrically connected to the controller, described to measure
The liquid level of hydraulic oil liquid；And
Liquid level alarm, is electrically connected to the controller, and the liquid level of the hydraulic oil liquid is less than a liquid
During the height set of position, the controller controls the liquid level alarm alarm.
10. the hydraulic pressure monitoring system according to any one of claim 1~6, it is characterised in that described
The import of fuel tank (10) is respectively communicated with the temperature-adjusting device and a return line (30), the hydraulic pressure prison
Control system also includes：
Clogging sensor (6), located at the fuel tank (10) import and be electrically connected to the controller, with survey
Measure the hydraulic oil liquid flow of the fuel tank (10) import；And
Blocking warner, is electrically connected to the controller, the hydraulic oil liquid flow of fuel tank (10) import
During less than a flow setting value, the controller controls the blocking warner alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610270634.8A CN107314003A (en) | 2016-04-27 | 2016-04-27 | Hydraulic pressure monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610270634.8A CN107314003A (en) | 2016-04-27 | 2016-04-27 | Hydraulic pressure monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107314003A true CN107314003A (en) | 2017-11-03 |
Family
ID=60184595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610270634.8A Pending CN107314003A (en) | 2016-04-27 | 2016-04-27 | Hydraulic pressure monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107314003A (en) |
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| CN109461677A (en) * | 2018-10-19 | 2019-03-12 | 任辉 | A kind of integrated circuit board pressing device |
| CN110580802A (en) * | 2019-10-29 | 2019-12-17 | 南京讯联智能科技有限公司 | Hydraulic pressure filter equipment monitoring and early warning system |
| CN111336146A (en) * | 2020-03-18 | 2020-06-26 | 中国商用飞机有限责任公司 | Method for operating an electric pump for an aircraft hydraulic system |
| CN113173196A (en) * | 2021-06-08 | 2021-07-27 | 中铁电气化铁路运营管理有限公司 | Liquid level and temperature display alarm system of contact net operation vehicle |
| CN113301781A (en) * | 2021-05-26 | 2021-08-24 | 三一重机有限公司 | Heat dissipation device, control method thereof, crushing equipment and operation machine |
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