CN207923650U - A kind of hydraulic air oil viscosity adjustable attenuation index testing device - Google Patents
A kind of hydraulic air oil viscosity adjustable attenuation index testing device Download PDFInfo
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- CN207923650U CN207923650U CN201820054774.6U CN201820054774U CN207923650U CN 207923650 U CN207923650 U CN 207923650U CN 201820054774 U CN201820054774 U CN 201820054774U CN 207923650 U CN207923650 U CN 207923650U
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Abstract
Include monitoring device the utility model discloses a kind of hydraulic air oil viscosity adjustable attenuation index testing device, testing stand and oil product spectroanalysis instrument, the testing stand includes to be tested the fuel tank of hydraulic pressure oil pump feed, heat refrigerating module, filter and the online viscosity sensor of fluid, the heating refrigerating module includes that water-filled radiator and heating are wrapped, the monitoring device includes main controller, parameter set unit, pressure sensor, temperature detecting module described in flow sensor and temperature detecting module includes the first temperature sensor, second temperature sensor and third temperature sensor.The utility model simple structure and reasonable design and it is easy to use, using effect is good, can test easy, that hydraulic air oil viscosity adjustable attenuation index is rapidly completed, and measuring accuracy is higher.
Description
Technical field
The utility model belongs to hydraulic air oil viscosity adjustable attenuation index test technical field, more particularly, to a kind of boat
Empty hydraulic oil viscosity adjustable attenuation index testing device.
Background technology
Plane hydraulic system uses aircraft fluid as its working media, and aircraft fluid as working media in addition to existing
It transmits except hydraulic energy in plane hydraulic system, also the matching surface that respectively works in plane hydraulic system is lubricated, protect work
The effect of oxidation is prevented as surface.With the work of plane hydraulic system, internal each working surface relative motion will produce metal
Particulate matter；Various sealing elements can gradually generate non-metallic particle object with aging or impulse stroke, these particulate matters enter hydraulic pressure
In oil, downstream is flowed into hydraulic oil, and filtered by oily filter.So hydraulic oil is just as the blood in human body, it is each dirty to body
While device transmits nutriment, also the waste that each internal organs generate is taken out of, and by kidney filtration, a set of closed cycle system is consequently formed
System.And hydraulic oil is the same also like the blood of human body, carries the health index of system, by measuring the state index of hydraulic oil,
The health degree of plane hydraulic system can be reacted.
Common No. 15 aircraft fluids, belong to oil fundamental mode hydraulic oil in aircraft fluid, for complicated macromolecule
Long-chain chemical products, itself also has service life, after hydraulic oil usage time is more than certain value, due to declining for its performance
Subtract, the variation of chemical composition, its due effect cannot be undertaken again, and hydraulic oil must be changed, just can guarantee plane hydraulic system
It can work normally.And as the key index for weighing hydraulic oil characteristic, the viscosity change of hydraulic oil can most characterize hydraulic oil
Working characteristics.
Hydraulic oil works with plane hydraulic system and constantly recycles, and internal long-chain molecule can be with plane hydraulic system work
It recycles, environmental stress (heat, pressures cycle etc.) gradually becomes short chain molecule, various additives of the original addition in hydraulic oil
(oxidant, thickener etc.) can gradually be precipitated, this can all cause the gradual decaying of hydraulic oil viscosity.With declining for hydraulic oil viscosity
Subtract, hydraulic oil to plane hydraulic system inside respectively work matching surface generation lubricating oil film can gradually it is thinning, lubricant effect by
Gradual change is poor, leads to internal system friction, abrasion aggravation, more wear particles is caused to generate.Therefore, it in aviation field, needs
It is clear using hydraulic oil viscosity adjustable attenuation index in particular aircraft to hydraulic system, in this, as hydraulic oil performance degradation control
Index processed carries out condition monitoring and the replacement of hydraulic oil, it is ensured that plane hydraulic system begins in life cycle management according to this index
It is in shape eventually.
Utility model content
The technical problem to be solved by the utility model is to the deficiencies in for the above-mentioned prior art, provide a kind of aviation
Hydraulic oil viscosity adjustable attenuation index testing device, simple structure and reasonable design and it is easy to use, using effect is good,
Energy is easy, the test of hydraulic air oil viscosity adjustable attenuation index is rapidly completed, and measuring accuracy is higher.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of hydraulic air oil viscosity decaying
Con trolling index test device, it is characterised in that：Including monitoring device, for the testing stand of subject hydraulic pump installation and for detecting quilt
The oil product spectroanalysis instrument of metal element content in hydraulic oil at the shell oil return of test solution press pump, the testing stand include for quilt
The fuel tank of test solution press pump fuel feeding, to be tested hydraulic pump returning-oil temperature controlled heating refrigerating module, to be tested hydraulic pump
Oil return be filtered and the filter that is connect with fuel tank and the fluid being detected to the oil return viscosity for being tested hydraulic pump are online
Viscosity sensor, the heating refrigerating module includes water-filled radiator and exports the heating packet of connection with water-filled radiator, described
The outlet of heating packet divides two-way, is connect all the way with the entrance of filter, another way passes sequentially through throttle valve and on-off valve and fluid
The entrance connection of online viscosity sensor；The outlet of the online viscosity sensor of fluid is with the outlet of the filter by returning
The inlet port of oily manifold and the connection of Guan Houyu fuel tanks, the subject hydraulic pump is provided with the first self-sealing joint, the subject hydraulic pressure
The inlet port of pump is connect by the first self-sealing joint with fuel tank, and the pressure port of the subject hydraulic pump is provided with second from sealing-in
The outlet of head, second self-sealing joint divides two-way, is connect all the way with the entrance of safety valve, another way and manual variable throttle valve
Entrance connection；Third self-sealing joint is set at the shell oil return opening of the subject hydraulic pump, the third self-sealing joint goes out
It is provided with sampling valve, the outlet of the safety valve and manual variable throttle valve on shell oil return pipe described in mouth setting shell oil return pipe
Outlet be provided with first pressure mouth pipe, the first pressure mouth pipe and shell oil return pipe and the entrance of Guan Houyu water-filled radiators
Connection；
The monitoring device includes main controller, parameter set unit, for detecting the pressure being tested at the pressure port of hydraulic pump
The pressure sensor of power, for detect subject hydraulic pump pressure port at flow flow sensor and for detect by test solution
Temperature detecting module described in the temperature detecting module of the returning-oil temperature of press pump includes the returning-oil temperature to water-filled radiator inlet
The first temperature sensor for being detected is detected the returning-oil temperature in water-filled radiator exit and heating packet inlet
Second temperature sensor and the third temperature sensor being detected to the returning-oil temperature in heating packet exit, the fluid are online
Viscosity sensor, pressure sensor, flow sensor, the first temperature sensor, second temperature sensor third temperature sensor
It is connect with main controller with parameter set unit, the inlet valve and heating packet are controlled by main controller.
A kind of above-mentioned hydraulic air oil viscosity adjustable attenuation index testing device, it is characterised in that：The main controller
Input is terminated with A/D converter, and the output of the main controller is terminated with display unit, the first D/A converter and the 2nd D/A conversions
The output end of device, first D/A converter connects with the input terminal of inlet valve, the output end of second D/A converter with
Heating packet input terminal connect, data storage connects with main controller, first temperature sensor, second temperature sensor and
The output end of third temperature sensor connects with the input terminal of A/D converter.
A kind of above-mentioned hydraulic air oil viscosity adjustable attenuation index testing device, it is characterised in that：Described first is self-styled
The entrance of connector is connected by fuel sucking pipe and fuel tank, the outlet of first self-sealing joint and the inlet port of the subject hydraulic pump
Logical, the entrance of second self-sealing joint is connected to the pressure port of the subject hydraulic pump, and the pressure sensor is located at second
Between the outlet of self-sealing joint and the entrance of manual variable throttle valve.
A kind of above-mentioned hydraulic air oil viscosity adjustable attenuation index testing device, it is characterised in that：The flow sensing
Device is turbine type flow sensor, and the safety valve is direct-power safety valve, and the online viscosity sensor of fluid is oscillatory type
In-line viscometer or tuning-fork type in-line viscometer.
A kind of above-mentioned hydraulic air oil viscosity adjustable attenuation index testing device, it is characterised in that：The appearance of the fuel tank
For product not less than the 1/4 of subject hydraulic pump maximum output flow, the fuel tank outer wall is provided with thermal insulation layer.
A kind of above-mentioned hydraulic air oil viscosity adjustable attenuation index testing device, it is characterised in that：It is described variable manually
The maximum inflow-rate of water turbine of throttle valve is not less than the maximum stream flow of subject hydraulic pump, the maximum working pressure of the manual variable throttle valve
Value is continuously adjusted not less than the maximum pressure value for being tested hydraulic pump, the manual variable throttle valve from standard-sized sheet to fully closed manually
Throttle valve.
The utility model has the following advantages compared with prior art：
1, used test device simple structure and reasonable design and easy to operate, input cost is relatively low.
2, used test device can be suitably used for various aircraft fluids, and use scope is wide, in addition, test device knot
Structure is compact, occupies little space.
3, used test device is easy to use and using effect is good, by the way that the first self-sealing joint, second is arranged
Self-sealing joint and third self-sealing joint, install or replace subject hydraulic pump when, can self-closed hydraulic tube road, facilitate subject
The installation and replacement of hydraulic pump.
4, sampling valve is set in used test device, hand can be carried out on the shell oil return line of subject hydraulic pump
Dynamic fluid sampling, completely closes after sampling, ensures that test device securely and reliably works.
5, on-off valve is set in used test device, is opened when needing to carry out when hydraulic oil viscosity measures, and pass through
Fixed orifice adjusts overcurrent flow, so that overcurrent flow stabilization within the scope of 100mL~300mL is flowed through, ensures that fluid glues online
The particle content in subject hydraulic pump oil return can be accurately detected in degree sensor.
6, setting heating refrigerating module controls the viscous of hydraulic oil by adjusting returning-oil temperature in used test device
Degree variation, and the hydraulic oil of different viscosities is conveyed to hydraulic pump and is used, and observes the abrasion condition inside hydraulic pump, according to sentencing
Fixed condition is judged, is met decision condition and is then illustrated that being tested hydraulic pump inter deterioration seriously cannot be guaranteed that hydraulic pump height can
By property, the work of long-life, then oil return viscosity number when meeting the test temperature setting value of decision condition declines for hydraulic oil viscosity
The Con trolling index subtracted.
7, used test device heats refrigerating module by setting, adjusts returning-oil temperature to control the viscosity of hydraulic oil
Variation, and the hydraulic oil of different viscosities is conveyed to inside hydraulic oil, by observing the abrasion condition inside hydraulic pump, to obtain
The Con trolling index for taking hydraulic oil viscosity to decay, it is convenient to measure.
8, used test device using effect is good and measuring accuracy is high, in test process, passes through oil product spectrum analysis
Instrument is detected to being tested metal element content in the hydraulic oil at the shell oil return of hydraulic pump, the online viscosity sensor pair of fluid
It is tested the oil return viscosity number at the shell oil return of hydraulic pump and carries out on-line checking, to ensure that the control of hydraulic oil viscosity decaying refers to
Mapping amount is accurate.
9, used test device is detected returning-oil temperature by temperature detecting module, so that returning-oil temperature is full
Sufficient fiducial temperature setting value and test temperature setting value, the temperature value and fiducial temperature that main controller is detected according to temperature detecting module
Deviation between setting value and test temperature setting value is adjusted until returning-oil temperature meets fiducial temperature setting value and test
It is accurate to improve test for desired temperature.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the schematic block circuit diagram of the utility model.
Fig. 3 is the flow diagram that hydraulic air oil viscosity adjustable attenuation indication test method is carried out using the utility model.
Reference sign:
1-subject hydraulic pump；2-the second self-sealing joint；3-pressure sensors；
4-manual variable throttle valves；5-flow sensors；6-safety valves；
7-third self-sealing joints；8-sampling valves；9-throttle valves；
10-on-off valves；The online viscosity sensor of 11-fluid；
13-filters；14-fuel tanks；15-the first self-sealing joint；
16-motors；17-water-filled radiators；18-heating packets；
19-the first temperature sensor；20-second temperature sensors；21-third temperature sensors；
22-main controllers；23-the first D/A converter；24-inlet valves；
25-the second D/A converter；26-A/D converters；27-data storages；
28-display units；29-parameter set units；30-fuel sucking pipes；
32-first pressure mouth pipes；33-oil return manifold；34-shell oil return pipes；
35-motor drivers.
Specific implementation mode
As depicted in figs. 1 and 2, the utility model includes monitoring device, for being tested the testing stand and be used for that hydraulic pump 1 is installed
The oil product spectroanalysis instrument of metal element content, the testing stand in hydraulic oil at the shell oil return of detection subject hydraulic pump 1
Include for be tested 1 fuel feeding of hydraulic pump fuel tank 14, to be tested hydraulic pump 1 returning-oil temperature controlled heating refrigerating module,
Oil return to being tested hydraulic pump 1 is filtered and the filter 13 that connect with fuel tank 14 and the oil return viscosity to subject hydraulic pump 1
The online viscosity sensor 11 of fluid being detected, the heating refrigerating module includes water-filled radiator 17 and and water-filled radiator
The outlet of the heating packet 18 of 17 outlet connections, the heating packet 18 divides two-way, is connect all the way with the entrance of filter 13, another way
The entrance for passing sequentially through the online viscosity sensor of throttle valve 9 and on-off valve 10 and fluid 11 is connect；The online viscosity of fluid passes
The outlet of sensor 11 is connect with the outlet of the filter 13 by oil return manifold 33 and Guan Houyu fuel tanks 14, the subject hydraulic pressure
The inlet port of pump 1 is provided with the first self-sealing joint 15, and the inlet port of the subject hydraulic pump 1 passes through the first self-sealing joint 15 and oil
Case 14 connects, and the pressure port of the subject hydraulic pump 1 is provided with the second self-sealing joint 2, the outlet point of second self-sealing joint 2
Two-way is connect with the entrance of safety valve 6 all the way, and another way is connect with the entrance of manual variable throttle valve 4；The subject hydraulic pump
Third self-sealing joint 7 is set at 1 shell oil return opening, and the outlet of the third self-sealing joint 7 is arranged described in shell oil return pipe 34
It is provided with sampling valve 8 on shell oil return pipe 34, the outlet of the safety valve 6 and the outlet of manual variable throttle valve 4 are provided with the
One pressure port pipe 32, the first pressure mouth pipe 32 are connect with the entrance of shell oil return pipe 34 and Guan Houyu water-filled radiators 17；
The monitoring device includes main controller 22, parameter set unit 29, is tested at the pressure port of hydraulic pump 1 for detecting
Pressure pressure sensor 3, for detect subject hydraulic pump 1 pressure port at flow flow sensor 5 and for examining
The temperature detecting module of the returning-oil temperature of subject hydraulic pump 1 is surveyed, the temperature detecting module includes to 17 entrance of water-filled radiator
The first temperature sensor 19 that the returning-oil temperature at place is detected, to 17 exit of water-filled radiator and 18 inlet of heating packet
The second temperature sensor 20 that returning-oil temperature is detected and the third that the returning-oil temperature in 18 exits of heating packet is detected
Temperature sensor 21, the online viscosity sensor 11 of the fluid, pressure sensor 3, flow sensor 5, the first temperature sensor
19,20 third temperature sensor 21 of second temperature sensor and parameter set unit 29 are connect with main controller 22, the water inlet
Valve 24 and heating packet 18 are controlled by main controller 22.
In the present embodiment, the pressure port of the subject hydraulic pump 1 is also the high-pressure outlet of the subject hydraulic pump 1.
In the present embodiment, the input of the main controller 22 is terminated with A/D converter 26, the output termination of the main controller 22
Have display unit 28, the first D/A converter 23 and the second D/A converter 25, the output end of first D/A converter 23 with into
The input terminal of water valve 24 connects, and the output end of second D/A converter 25 connects with the input terminal of heating packet 18, data storage
Device 27 connects with main controller 22, first temperature sensor 19, second temperature sensor 20 and third temperature sensor 21
Output end connects with the input terminal of A/D converter 26.
In the present embodiment, the entrance of first self-sealing joint 15 is self-styled by fuel sucking pipe 30 and fuel tank 14, described first
The outlet of connector 15 is connected to the inlet port of the subject hydraulic pump 1, the entrance of second self-sealing joint 2 and described by test solution
The pressure port of press pump 1 is connected to, and the pressure sensor 3 is located at the outlet of the second self-sealing joint 2 and entering for manual variable throttle valve 4
Between mouthful.
In the present embodiment, the flow sensor 5 is turbine type flow sensor, and the safety valve 6 is Direct Action Type safety
Valve, the online viscosity sensor 11 of fluid are oscillatory type in-line viscometer or tuning-fork type in-line viscometer.
In the present embodiment, the volume of the fuel tank 14 is not less than the 1/4 of subject 1 maximum output flow of hydraulic pump, the oil
14 outer wall of case is provided with thermal insulation layer.
In the present embodiment, the maximum inflow-rate of water turbine of the manual variable throttle valve 4 is not less than the max-flow for being tested hydraulic pump 1
Amount, the maximum working pressure value of the manual variable throttle valve 4 are described manual not less than the maximum pressure value for being tested hydraulic pump 1
Variable throttle valve 4 is from standard-sized sheet to the fully closed continuous throttle valve adjusted manually.
It is to be protected to subject hydraulic pump 1 by the way that safety valve 10 is arranged in the present embodiment.
As shown in figure 3, hydraulic air oil viscosity adjustable attenuation indication test method, includes the following steps：
Step 1: being equipped before test and judging be tested whether hydraulic pump is normal, and detailed process is as follows：
Step 101, by be tested hydraulic pump 1 inlet port, pressure port and shell oil return opening respectively with the first self-sealing joint 15
Outlet, the second self-sealing joint 2 entrance connected with the entrance of third self-sealing joint 7, and hydraulic air is added into fuel tank 14
Oil, until aircraft fluid adds to preset hydraulic oil setting volume in fuel tank 14；
Step 102 makes water-filled radiator 17 not work by main controller 22 by controlling the closing of inlet valve 24, while master control
The control heating packet of device 22 18 does not heat, and main controller 22 controls motor 16 by motor driver 35 and rotates, the rotation of motor 16 make by
After test solution press pump 1 reaches rated speed, pressure sensor 3 is detected to being tested the pressure at the pressure port of hydraulic pump 1, and will
The pressure detected is sent to main controller 22, and flow sensor 5 is detected to being tested the flow at the pressure port of hydraulic pump 1,
And the flow detected is sent to main controller 22, when adjusting manual variable throttle valve 4 to standard-sized sheet, pressure sensor 3 detects
Pressure be zero, the flow that flow sensor 5 detects be tested hydraulic pump 1 peak flow values；It can switch political loyalty manually when adjusting
When stream valve 4 is fully closed, the pressure that pressure sensor 3 detects is to be tested the maximum pressure value of hydraulic pump 1, and flow sensor 5 detects
To flow be zero when, illustrate to be tested hydraulic pump 1 normal；
Step 103 adjusts manual variable throttle valve 4, and subject hydraulic pump 1 is made to be in rated operation；
Step 2: the detection of viscosity a reference value and metal element content a reference value：Subject hydraulic pump 1 is in nominal operation shape
After state, 18 heating of the control heating of main controller 22 packet, main controller 22 controls water-filled radiator 17 and does not work, until third temperature sensing
The returning-oil temperature value in 18 exits of heating packet that device 21 detects meets preset fiducial temperature setting value T0When, it connects logical
Disconnected valve 10 makes the oil return of subject hydraulic pump 1 enter fuel tank 14 through throttle valve 9, on-off valve 10 and the online viscosity sensor 11 of fluid
In, oil return viscosity that the online viscosity sensor of fluid 11 is detected to the oil return viscosity number for being tested hydraulic pump 1, and will detect
Value is sent to main controller 22, then obtains fiducial temperature setting value T0When oil return viscosity number, and by fiducial temperature setting value T0When
Oil return viscosity number is denoted as viscosity reference value alpha0；
And open sampling valve 8 and the shell oil return opening for being tested hydraulic pump 1 is sampled, by oil product spectroanalysis instrument to quilt
Metal element content is detected in hydraulic oil at the shell oil return of test solution press pump 1, obtains fiducial temperature setting value T0When
Metal element content in hydraulic oil, and by fiducial temperature setting value T0When hydraulic oil in metal element content be denoted as metallic element
Content reference value beta0, metal element content reference value beta is inputted by parameter set unit 290, main controller 22 is by metal element content
Reference value beta0In data storage 27；
Step 3: the detection of viscosity adjustable attenuation index, detailed process are as follows：
Step 301, when being tested hydraulic pump 1 and be in rated operation, wrapped and 18 be not added with by the control heating of main controller 22
Heat, main controller 22 makes water-filled radiator 17 work by controlling the opening of inlet valve 24, until second temperature sensor 20 detects
The returning-oil temperature value in 17 exit of water-filled radiator meet preset test temperature setting value TiWhen, connect on-off valve
10, so that the oil return of subject hydraulic pump 1 is entered in fuel tank 14 through throttle valve 9, on-off valve 10 and the online viscosity sensor 11 of fluid, oil
The online viscosity sensor of liquid 11 is detected the oil return viscosity number for being tested hydraulic pump 1, and the oil return viscosity number detected is sent out
It send to main controller 22, then obtains test temperature setting value TiWhen oil return viscosity number αi；
And open sampling valve 8 and the shell oil return opening for being tested hydraulic pump 1 is sampled, and pass through oil product spectroanalysis instrument pair
It is tested metal element content in the hydraulic oil at the shell oil return of hydraulic pump 1 to be detected, and will be golden in the hydraulic oil detected
Belong to constituent content and be sent to main controller 22, then obtains test temperature setting value TiWhen hydraulic oil in metal element content βi, master control
Device 22 is by test temperature setting value TiWhen hydraulic oil in metal element content βiIn data storage 27；Wherein, i is positive integer,
And i >=1,5≤Ti-T0≤10；
Step 302, using the test temperature setting value T in 22 called data memory 27 of main controlleriWhen hydraulic oil in
Metal element content βiWith metal element content reference value beta0, and by test temperature setting value TiWhen hydraulic oil in metallic element
Content βiWith metal element content reference value beta0According to decision conditionJudged, whenWhen establishment, step is executed
Rapid 303；WhenWhen invalid, step 304 is executed；
Step 303 works as decision conditionWhen establishment, illustrate that subject 1 inter deterioration of hydraulic pump is serious, then the survey obtained
Try desired temperature TiWhen oil return viscosity number αiIt is for the Con trolling index of hydraulic oil viscosity decaying, main controller 22 and single by showing
Member 28 shows the Con trolling index of hydraulic oil viscosity decaying, the EOT end of test；
Step 304 works as decision conditionWhen invalid, illustrate that subject 1 inter deterioration of hydraulic pump is not serious, execute step
Rapid 305；
Step 305, according to the method described in step 301 to step 304, next test is carried out to subject hydraulic pump 1
Desired temperature Ti+1Test；Wherein, 5≤Ti+1-Ti≤10。
In the present embodiment, 18 heating of the control heating of step 2 main controller 22 packet, main controller 22 controls water-filled radiator 17 not
Work, until the returning-oil temperature value in 18 exits of heating packet that third temperature sensor 21 detects meets preset benchmark
Desired temperature T0, detailed process is as follows：
Before control heating 18 heating works of packet of main controller 22, second temperature sensor 20 goes back to 18 inlet of heating packet
Oil temperature signal is detected, and the returning-oil temperature signal of 18 inlet of heating packet detected is sent to A/D converter 26,
The returning-oil temperature signal of 18 inlet of heating packet is converted to the returning-oil temperature signal of 18 inlet of heating packet through A/D converter 26
It is worth, that is, temperature value before heating, and temperature value before heating is sent to main controller 22, main controller 22 calls difference comparsion module that will add
Temperature value and fiducial temperature setting value T before heat0It carries out difference comparsion and obtains temperature deviation value before heating, main controller 22 calls PI moulds
Block is handled temperature deviation value before heating by PI rules, obtains heating power output valve, will be added through the second D/A converter 25
Thermal power output value is converted to heating power output signal, i.e. the heating power of heating packet 18 controls signal, heating 18 bases of packet
The heating power controls signal control heating 18 heating powers of packet, 18 work of the control heating of main controller 22 packet；
During heating 18 heating of packet, returning-oil temperature signal of the third temperature sensor 21 to 18 exits of heating packet
It is detected, and the returning-oil temperature signal in 18 exits of heating packet detected is sent to A/D converter 26, converted through A/D
The returning-oil temperature signal in 18 exits of heating packet is converted to the returning-oil temperature value in 18 exits of heating packet by device 26, and is sent to master
Device 22 is controlled, then main controller 22 receives the returning-oil temperature value in 18 exits of heating packet, and the returning-oil temperature that will heat 18 exits of packet
Value is denoted as heating temperature measured value, and main controller 22 calls difference comparsion module by heating temperature measured value and fiducial temperature setting value
T0Carry out difference comparsion and obtain heating temperature deviation, main controller 22 call PI modules by heating temperature deviation by PI rules into
Row processing, obtains the new output valve of heating power, the new output valve of heating power is converted to heating power through the second D/A converter 25
The heating power of new output signal, i.e. heating packet 18 newly controls signal, and heating packet 18 newly controls signal tune according to the heating power
The heating power of section heating packet 18, until the returning-oil temperature value in 18 exits of heating packet that third temperature sensor 21 detects is full
The preset fiducial temperature setting value T of foot0。
In the present embodiment, before main controller 22 controls the work of water-filled radiator 17 in step 301, the first temperature sensor 19
The returning-oil temperature signal of 17 inlet of water-filled radiator is detected, and returning 17 inlet of water-filled radiator detected
Oil temperature signal is sent to A/D converter 26, turns the returning-oil temperature signal of 17 inlet of water-filled radiator through A/D converter 26
It is changed to the returning-oil temperature value of 17 inlet of water-filled radiator, i.e. temperature value before water cooling, and temperature value before water cooling is sent to master control
Device 22, it is cold that main controller 22 calls difference comparsion module to obtain temperature value before water cooling with test temperature setting value progress difference comparsion
Preceding temperature deviation value, main controller 22 call PI modules to handle temperature deviation value before cooling by PI rules, are cooled down
Output valve before cooling is converted to cooling output signal, i.e. the aperture control of inlet valve 24 by output valve through the first D/A converter 23
Signal, inlet valve 24 control the aperture of inlet valve 24 according to the opening control signal, and main controller 22 controls 17 work of water-filled radiator
Make；
During water-filled radiator 17 works, oil return of the second temperature sensor 20 to 17 exit of water-filled radiator
Temperature signal is detected, and the returning-oil temperature signal in 17 exit of water-filled radiator detected is sent to A/D converter
26, the returning-oil temperature signal in 17 exit of water-filled radiator is converted into 17 exit of water-filled radiator through A/D converter 26
Returning-oil temperature value, i.e. temperature value after water cooling, and temperature value after water cooling is sent to main controller 22, main controller 22 calls difference comparsion
Temperature value after water cooling and test temperature setting value are carried out temperature deviation value after difference comparsion is cooled down by module, and main controller 22 is adjusted
Temperature deviation value after cooling is handled by PI rules with PI modules, output valve after being cooled down, through the first D/A converter 23
Output valve after cooling is converted into new cooling output signal, the i.e. new opening control signal of inlet valve 24, inlet valve 24 is according to this
The aperture of new opening control signal regulating water inlet valve 24, until the water-filled radiator 17 that second temperature sensor 20 detects exports
The returning-oil temperature value at place meets preset test temperature setting value.
In the present embodiment, in the hydraulic oil detected metallic element be metallic element during the friction of piston shoes-swash plate is secondary or
Divide the metallic element in oil cap-friction rotor pair.
In the present embodiment, it is further preferred that the aircraft fluid is No. 15 aircraft fluids.
In the present embodiment, the measuring mechanism of the Con trolling index of hydraulic oil viscosity decaying is：Hydraulic oil is in plane hydraulic system
The internal working surfaces of each element form lubricating oil film and generate certain thickness lubrication between two working surfaces under normal circumstances
Oil film, two working surfaces friction pair is not directly contacted under the action of lubricating oil film, at this time inside element between each working surface
High lubricating effect, wear extent is also minimum.After the viscosity of hydraulic oil gradually decays, inside element in each working surface friction pair
Oil film thickness can be gradually thinning, after viscosity number decays to certain limiting value, two working surface frictions inside element at this time
Lubricating oil film in pair will by hydraulic oil particle contamination and/or load stress rack, cause two working surfaces directly to connect
It touches and generates dry friction, thus generate a large amount of wear particle.So how clear hydraulic oil viscosity adjustable attenuation index, can be with
It is converted into：As hydraulic oil viscosity reduces, until being seriously worn inside hydraulic system, then oil return viscosity number is hydraulic pressure at this time
The Con trolling index of oil viscosity decaying.
It in the present embodiment, selects subject hydraulic pump 1 as subjects, is because hydraulic pump is as influence airplane hydraulic pressure system
The key element for the reliability and index of aging of uniting, the reliability and working life of hydraulic pump-motor transfer tube, electrodynamic pump etc. refer to
Mark directly affects the reliability and index of aging of plane hydraulic system, can pass through using aircraft hydraulic pumps as subjects
The artificial temperature that increases makes the reduction of oil return viscosity number, and is observed to the case where hydraulic pump inter deterioration to determine that hydraulic oil is viscous
Spend adjustable attenuation index.
In the present embodiment, the fiducial temperature setting value T0It is 50 DEG C.It is because the variation of temperature can most influence hydraulic oil
Viscosity, when plane hydraulic system designs, generally using the oil liquid temperature in hydraulic reservoir as system design objective.According to
Engineering is practical, and aircraft is in flight course, and oil liquid temperature maintains 50 DEG C or so in hydraulic oil container, so viscous in aircraft hydraulic oil
When spending adjustable attenuation index, when being set using 50 DEG C of conditions as fiducial temperature, fiducial temperature setting value T is obtained0When oil return it is viscous
Angle value and fiducial temperature setting value T0When hydraulic oil in metal element content.
In actual use, since there are error, fiducial temperature setting value T0As long as meeting error range meets survey
Examination requires.
In the present embodiment, oil product spectroanalysis instrument is to being tested metallic element in the hydraulic oil at the shell oil return of hydraulic pump 1
Content detection judges the abrasion condition of hydraulic pump, be because：There are three friction pairs inside aviation hydraulic pump：Plunger-column
It fills in chamber, piston shoes-swash plate and divides oil cap-rotor, according to Practical Project situation analysis：Swash plate friction is secondary and divides oil cap-rotor for piston shoes-
Friction pair is the key that influence aerospace hydraulic pump reliability and service life friction pair.It is above-mentioned to improve when aerospace hydraulic pump designs
When the abrasive resistance of two friction pairs, rapidoprint of the lower metallic copper of hardness as piston shoes is generally used, to reduce bulb (one
As select hardness higher stainless steel) abrasion between piston shoes；Rotor with divide it is silver-plated on food tray contact surface, pass through silver extension
Property form wearing layer, divide abrasion between oil cap and rotor to reduce.With hydraulic pump works, the by-produced opposite fortune of internal friction
It is dynamic, a certain amount of metal wear particles are will produce, and aerospace hydraulic pump is discharged with casing of hydraulic pump oil return.Therefore, pass through detection
Metal element content can judge the abrasion condition of aerospace hydraulic pump in hydraulic oil.
In the present embodiment, by heating refrigerating module, returning-oil temperature is adjusted to control the viscosity change of hydraulic oil, hydraulic oil
Hydraulic oil viscosity reduction caused by temperature increases does not cause to generate dry friction inside subject hydraulic pump, then by gradually rising again
High hydraulic oil temperature angle value, and returning-oil temperature value is measured under the conditions of different test temperature setting values, and it is tested the shell of hydraulic pump
Tenor in hydraulic oil at body oil return is adjusted until meeting judgement, and test terminates.
In the present embodiment, 5≤T in step 301i-T0≤ 10,5≤T in step 305i+1-Ti≤ 10, it is because passing through section
Property improve test system in returning-oil temperature value, returning-oil temperature value can be reduced step by step, to simulate hydraulic oil in actual operation
The actual conditions that viscosity number gradually reduces.
In conclusion the utility model simple structure and reasonable design and it is easy to use, using effect is good, can it is easy,
The test of hydraulic air oil viscosity adjustable attenuation index is rapidly completed, and measuring accuracy is higher.
The above is only the preferred embodiment of the utility model, not imposed any restrictions to the utility model, every
Any simple modification, change and equivalent structure made by above example are changed according to the utility model technical spirit, still
Belong in the protection domain of technical solutions of the utility model.
Claims (6)
1. a kind of hydraulic air oil viscosity adjustable attenuation index testing device, it is characterised in that：Including monitoring device, for by test solution
Metal element content in hydraulic oil at the testing stand of press pump (1) installation and the shell oil return for detecting subject hydraulic pump (1)
Oil product spectroanalysis instrument, the testing stand include for subject hydraulic pump (1) fuel feeding fuel tank (14), to subject hydraulic pump (1)
Returning-oil temperature controlled heating refrigerating module, to subject hydraulic pump (1) oil return be filtered and with fuel tank (14) even
The filter (13) connect and the online viscosity sensor of fluid (11) that the oil return viscosity of subject hydraulic pump (1) is detected, institute
The heating packet (18) that heating refrigerating module includes water-filled radiator (17) and exports connection with water-filled radiator (17) is stated, it is described to add
The outlet of heat packet (18) divides two-way, is connect all the way with the entrance of filter (13), another way passes sequentially through throttle valve (9) and break-make
Valve (10) is connect with the entrance of the online viscosity sensor of fluid (11)；The outlet of the online viscosity sensor of fluid (11) and institute
The outlet for stating filter (13) is connected by oil return manifold (33) and Guan Houyu fuel tanks (14), the suction of the subject hydraulic pump (1)
Hydraulic fluid port is provided with the first self-sealing joint (15), and the inlet port of the subject hydraulic pump (1) passes through the first self-sealing joint (15) and oil
Case (14) connects, and the pressure port of the subject hydraulic pump (1) is provided with the second self-sealing joint (2), second self-sealing joint (2)
Outlet divide two-way, connect all the way with the entrance of safety valve (6), another way is connect with the entrance of manual variable throttle valve (4)；Institute
Setting third self-sealing joint (7) at the shell oil return opening of subject hydraulic pump (1) is stated, the outlet of the third self-sealing joint (7) is set
Set and be provided with sampling valve (8) on shell oil return pipe (34) the shell oil return pipe (34), the outlet of the safety valve (6) with manually
The outlet of variable throttle valve (4) is provided with first pressure mouth pipe (32), the first pressure mouth pipe (32) and shell oil return pipe
(34) and the entrance of Guan Houyu water-filled radiators (17) connects；
The monitoring device includes main controller (22), parameter set unit (29), the pressure port for detecting subject hydraulic pump (1)
The flow sensor (5) of flow at the pressure sensor (3) of the pressure at place, the pressure port for detecting subject hydraulic pump (1)
With the temperature detecting module of the returning-oil temperature for detecting subject hydraulic pump (1), the temperature detecting module includes being dissipated to water cooling
The first temperature sensor (19) that the returning-oil temperature of hot device (17) inlet is detected, to water-filled radiator (17) exit
With the second temperature sensor (20) that is detected of returning-oil temperature of heating packet (18) inlet and (18) exit is wrapped to heating
The third temperature sensor (21) that is detected of returning-oil temperature, the online viscosity sensor of fluid (11), pressure sensor
(3), flow sensor (5), the first temperature sensor (19), second temperature sensor (20) third temperature sensor (21) and ginseng
Number setting unit (29) is connect with main controller (22), and inlet valve (24) and heating packet (18) are controlled by main controller (22)
System.
2. a kind of hydraulic air oil viscosity adjustable attenuation index testing device described in accordance with the claim 1, it is characterised in that：Institute
The input for stating main controller (22) is terminated with A/D converter (26), the output of the main controller (22) be terminated with display unit (28),
First D/A converter (23) and the second D/A converter (25), the output end and inlet valve of first D/A converter (23)
(24) input terminal connects, and the output end of second D/A converter (25) connects with the input terminal of heating packet (18), and data are deposited
Reservoir (27) connects with main controller (22), first temperature sensor (19), second temperature sensor (20) and third temperature
The output end of sensor (21) connects with the input terminal of A/D converter (26).
3. according to a kind of hydraulic air oil viscosity adjustable attenuation index testing device as claimed in claim 1 or 2, feature exists
In：The entrance of first self-sealing joint (15) by fuel sucking pipe (30) and fuel tank (14), first self-sealing joint (15)
It exports and is connected to the inlet port of the subject hydraulic pump (1), entrance and the subject hydraulic pump of second self-sealing joint (2)
(1) pressure port connection, the pressure sensor (3) are located at outlet and the manual variable throttle valve (4) of the second self-sealing joint (2)
Entrance between.
4. according to a kind of hydraulic air oil viscosity adjustable attenuation index testing device as claimed in claim 1 or 2, feature exists
In：The flow sensor (5) is turbine type flow sensor, and the safety valve (6) is direct-power safety valve, and the fluid exists
Line viscosity sensor (11) is oscillatory type in-line viscometer or tuning-fork type in-line viscometer.
5. according to a kind of hydraulic air oil viscosity adjustable attenuation index testing device as claimed in claim 1 or 2, feature exists
In：Not less than the 1/4 of subject hydraulic pump (1) maximum output flow, fuel tank (14) outer wall is set the volume of the fuel tank (14)
It is equipped with thermal insulation layer.
6. according to a kind of hydraulic air oil viscosity adjustable attenuation index testing device as claimed in claim 1 or 2, feature exists
In：The maximum inflow-rate of water turbine of the manual variable throttle valve (4) is described manually not less than the maximum stream flow for being tested hydraulic pump (1)
The maximum working pressure value of variable throttle valve (4) is not less than the maximum pressure value of subject hydraulic pump (1), the manual variable throttle valve
(4) it is from standard-sized sheet to the fully closed continuous throttle valve adjusted manually.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820054774.6U CN207923650U (en) | 2018-01-14 | 2018-01-14 | A kind of hydraulic air oil viscosity adjustable attenuation index testing device |
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| CN201820054774.6U CN207923650U (en) | 2018-01-14 | 2018-01-14 | A kind of hydraulic air oil viscosity adjustable attenuation index testing device |
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| CN207923650U true CN207923650U (en) | 2018-09-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195720A (en) * | 2018-01-14 | 2018-06-22 | 陕西东方长安航空科技有限公司 | A kind of hydraulic air oil viscosity adjustable attenuation index testing device and test method |
| CN109323117A (en) * | 2018-12-16 | 2019-02-12 | 中国航发沈阳发动机研究所 | A kind of lubricating system |
| CN113110643A (en) * | 2021-05-18 | 2021-07-13 | 深圳市优界科技有限公司 | Temperature control device and temperature control method thereof |
-
2018
- 2018-01-14 CN CN201820054774.6U patent/CN207923650U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195720A (en) * | 2018-01-14 | 2018-06-22 | 陕西东方长安航空科技有限公司 | A kind of hydraulic air oil viscosity adjustable attenuation index testing device and test method |
| CN108195720B (en) * | 2018-01-14 | 2023-09-05 | 陕西东方长安航空科技有限公司 | Device and method for testing viscosity attenuation control index of aviation hydraulic oil |
| CN109323117A (en) * | 2018-12-16 | 2019-02-12 | 中国航发沈阳发动机研究所 | A kind of lubricating system |
| CN109323117B (en) * | 2018-12-16 | 2020-09-18 | 中国航发沈阳发动机研究所 | Lubricating system |
| CN113110643A (en) * | 2021-05-18 | 2021-07-13 | 深圳市优界科技有限公司 | Temperature control device and temperature control method thereof |
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