CN109959478A - A kind of pressure sensor rotary centrifugal force characteristic test system - Google Patents
A kind of pressure sensor rotary centrifugal force characteristic test system Download PDFInfo
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- CN109959478A CN109959478A CN201811590226.6A CN201811590226A CN109959478A CN 109959478 A CN109959478 A CN 109959478A CN 201811590226 A CN201811590226 A CN 201811590226A CN 109959478 A CN109959478 A CN 109959478A
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- pressure
- oil
- tested
- sensor
- pressure sensor
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
- G01L5/0066—Calibration arrangements
Abstract
The invention discloses a kind of pressure sensor rotary centrifugal force characteristic test system, which includes data acquisition display system, pressure sensor rotary test rack and hydraulic control system；Pressure sensor rotary test rack is using the form for waiting the sensor at height under static pressure calibration rotation status in U-shaped oil duct, U-shaped oil duct one end is installed by tested pressure sensor, the other end installs standard pressure transducer, U-shaped oil duct is communicated with tested oil pocket, standard pressure transducer is fixed, normal pressure of the pressure value of output as the oil duct；Tested pressure sensor and U-shaped oil duct synchronous rotary, output pressure value is as indicating value；Hydraulic control system is the tested oil pocket fuel feeding in pressure sensor rotary test rack, realize the accurate control of the pressure, temperature and flow of tested oil pocket inner fluid, data collection system realizes the real-time testing of the pressure, temperature and flow of oil liquid in tested oil pocket, additionally it is possible to provide feedback signal for hydraulic control system.
Description
Technical field
The present invention relates to pressure sensors to test field of measuring technique, and in particular to a kind of pressure sensor centrifugation force characteristic
Test macro.
Background technique
The gear of high-power comprehensive actuator generallys use wet-type multi-disc clutch, multidisc clutch work
Primary structure be that friction is secondary and oil pressure cylinder.Oil pressure cylinder pressure data is the key that transmission system performance matching primitives ginseng
Number.Clutch combination pressure is provided by oil pressure cylinder, is emulation meter as the key parameter of design shift schedule and gear shifting characteristic
The key boundary condition of calculation.Combination pressure constantly changes in clutch cohesive process, shows a kind of oleo cushion characteristic, leads to
The key parameters such as influence binding time, transmitting torque, instantaneous temperature are crossed to influence performance of shifting gears.To improve overall performance, need
Improve comprehensive actuator mobility and power density.For improve transmission device mobility, need to improve shift relative rotation speed and
Load, this requires intensified pressures, and frictional heat will be caused to increase, and shift shock increases, the reduction of smooth gear shifting.Transmission device
The raising of power density requires to reduce structure size, this will cause system thermal capacity to reduce, and reliability reduces.This is to contradictory solution
Certainly oleo cushion characteristic can only be designed, power train properties are matched, is obtained higher by obtaining oil pressure cylinder pressure data
Smooth gear shifting, acceleration and reliability.High-precision oil pressure cylinder pressure data is obtained to need directly at oil pressure cylinder
Obtain pressure.
To obtain oil pressure cylinder pressure data pressure sensor can only be installed in oil pressure cylinder, by acquisition storage from
The voltage signal of clutch course of work oil pressure cylinder pressure sensor output, in conjunction with transducer calibration characterisitic parameter, by voltage
Signal is converted into pressure physical quantity.Clutch is in high speed rotation state inside transmission device, installs its internal pressure and passes
Sensor is similarly in high speed rotation state.Pressure sensor sensing head will receive the work of centrifugal force field in high speed rotation field
With this additional electric signal of output that acts through reflects.This additional electric signal and normal fluid pressure Signal averaging
Together, it can not separate, the error of pressure testing data is caused to increase.To improve measuring accuracy, needing will be caused by centrifugal force
Additional electrical signal testing comes out, and is come out additional electrical Signal separator by data processing, to improve pressure test in rotating field
Precision.
Summary of the invention
In view of this, the present invention provides a kind of pressure sensor rotary centrifugal force characteristic test system, pilot system energy
Enough measurements for realizing pressure in rotation oil liquid, obtain the influencing characterisitic of centrifugal force suffered by rotation status lower pressure sensor.
A kind of pressure sensor rotary centrifugal force characteristic test system, the system include data acquisition display system, pressure
Sensor rotation testboard bay and hydraulic control system；
The pressure sensor rotary test rack, which is used, to be waited at height in U-shaped oil duct under static pressure calibration rotation status
Tested pressure sensor is installed in the form of sensor, U-shaped oil duct one end, and the other end installs standard pressure transducer, U-shaped oil duct with
Tested oil pocket communicates, and standard pressure transducer is fixed, normal pressure of the pressure value of output as the oil duct；By measuring pressure
Sensor and U-shaped oil duct synchronous rotary, output pressure value is as indicating value；The hydraulic control system is that pressure sensor rotation is surveyed
Tested oil pocket fuel feeding in test stand frame realizes the accurate control of the pressure, temperature and flow of tested oil pocket inner fluid, the data
Acquisition system realizes the real-time testing of the pressure, temperature and flow of oil liquid in tested oil pocket, additionally it is possible to mention for hydraulic control system
For feedback signal.
Further, the pressure sensor rotary test rack include power motor, normal pressure rotary support seat, into
Fuel-displaced rotary support seat, bearing and rotation inner shaft；
Several independent U-shaped oil ducts are processed in the rotation inner shaft, U-shaped oil duct will be on pressure testing point and normal pressure point
Two sensors be connected, wherein having outlet and entrance of a pair of of oil duct as oil liquid, other oil ducts are as pressure testing point；
It is uniformly distributed sensor installation interface along axial direction on the cylindrical body of the normal pressure rotary support seat, in sensor
Interface position is installed along one week processing groove of inner wall；Groove is the channel of slinger and sensor in connection rotates；Normal pressure
Rotary support seat is fixed, and rotation inner shaft is rotated along axis center, no matter the oil duct of tested oil pocket rotate to where, oil duct
It is connected to always with sensor under the connection effect of groove, oil pressure can directly act on the sensing head of pressure sensor；Pressure passes
Normal pressure indicating value of the pressure value of sensor output as the oil duct；
The normal pressure rotary support seat and the oily rotary support seat of disengaging form a closed tested oil after docking
Chamber, rotation inner shaft are mounted in the installation cavity that normal pressure rotary support seat and Right socle are constituted by bearing, are rotated in inner shaft
The both ends of U-shaped oil duct respectively correspond sensor installation interface and tested oil pocket, the power motor driving rotation inner shaft is opposite
In normal pressure rotary support seat and pass in and out oily rotary support seat rotation.
Further, the liquid level that the U-shaped oil duct is located at rotation inner shaft side is less than the liquid level of tested oil pocket side
When height, by connecting external oil pipe on the interface of normal pressure rotary support seat, make U-shaped oil duct both ends liquid level one
It causes.
Further, the hydraulic control system includes fuel tank, manipulation Oil pump electrical machinery group, control pressurer system, temperature control
System, flow control system, oil return system and auxiliary system processed；Control pressurer system is by proportional pressure control valve and pressure sensor shape
At closed-loop control, the pressure of static oil recess structure internal liquid is controlled；Temperature control system is passed by heater, cooler and temperature
Sensor forms closed-loop control, for accurately controlling the temperature of static oil recess structure internal liquid；Flow control system is by variable-frequency electric
Machine stepless speed regulation and flowmeter form closed-loop control, realize the accurate control of flow needed for testing；It manipulates Oil pump electrical machinery group and returns
Oil system is uniformly controlled by controller, oil liquid needed for carrying out output and recovery control system to oil liquid；The lubrication list of auxiliary system
Lubricating oil needed for member provides testing stand, filter device ensure the cleannes of oil liquid.
The utility model has the advantages that
1, the present invention demarcates the sensor under the rotation status of the other side using the height place static pressure such as in U-tube, U-shaped in flow field
Conduit waits the fluid pressure at height (etc. radiuss of turn) equal under rotation status, avoids using collecting ring or wireless passes
The defeated high cost of device bring and insecure hidden danger.
2, the present invention obtains pressure sensor by pressure sensor rotary centrifugal force attribute testing and believes under rotation status
Number output valve and radius of turn, rotation speed, by the relationship between the parameters such as measuring pressure and measured medium temperature, be used to split
The pressure sensor output valve for opening up rotational pressure test carries out compensation data, achievees the purpose that improve measuring accuracy.
Detailed description of the invention
Fig. 1 be pressure sensor centrifugal force characteristic test system schematic layout pattern of the invention；
Fig. 2 is pressure sensor rotary test rack structural schematic diagram of the invention；
Fig. 3 is tested oil pocket pressure pipeline and pressure spot schematic diagram of the invention；
Wherein, 1- frequency converter, 2- data acquisition display system, 3- hydraulic oil container, 4- pressure sensor rotary test rack,
5- hydraulic control system, 6- power motor, 7- motor terminal pad, 8- normal pressure rotary support seat, 9- interface, 10- oil pipe connect
In mouth, the oily rotary support seat of 11- disengaging, 12- top plate, 13- bearing, the tested oil pocket of 14-, 15- pedestal, 16- groove, 17- rotate
Axis, 18- radius R1 pressure spot, 19- radius R2 pressure spot, 20- oil outlet, 21- radius R3 pressure spot, 22- oil inlet.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
As shown in Fig. 1, the present invention provides a kind of pressure sensor rotary centrifugal force characteristic test system, system includes
Pressure sensor rotary test rack 4, hydraulic control system 5 and data acquire display system 2, and wherein frequency converter 1 controls pressure
The revolving speed of power motor 6 in sensor rotation testboard bay 4, hydraulic oil container 3 are hydraulic control system fuel feeding.
Pressure sensor rotary test rack 4 arranges that the oil return pump group of hydraulic control system 5 is close to pressure using line-styled
Force snesor rotary test rack 4 is arranged, convenient for connection and signal acquisition.
As shown in Fig. 2 and 3, pressure sensor rotary test rack 4 includes power motor 6, motor terminal pad 7, standard
Pressure rotation support 8 passes in and out oily rotary support seat 11, top plate 12, pedestal 15, bearing 13 and rotation inner shaft 17；
Motor terminal pad 7 links together power motor 6 and rotation inner shaft 17, normal pressure rotation support 8, disengaging oil
Rotary support seat 11 and pedestal 15 form test base, and test base plays support to pressure sensor rotary test rack 4 and consolidates
It is set for using.
It passes in and out and designs two tubing interfaces 10 on oily rotary support seat 11, tubing interface 10 passes through pressure pipe and hydraulic regulation
System is connected, and realizes the functions of physical supply of oil liquid.
Several interfaces 9 are designed on normal pressure rotary support seat 8, in 9 position of interface along one week processing groove of inner wall；Groove
It is the channel of slinger and sensor in connection rotates；Normal pressure rotary support seat 8 is fixed, rotates inner shaft 17 along axis
Heart rotation, no matter the oil duct of tested oil pocket rotate to where, oil duct connects with sensor always under the connection effect of groove
Logical, oil pressure can directly act on the sensing head of pressure sensor；Standard of the pressure value of pressure sensor output as the oil duct
Pressure indicating value.Interface 9 is connected by pressure guiding pipe with standard pressure transducer.
Inner shaft 17 is rotated as one of pressure sensor rotary test rack core component, is designed to a solid cylinder,
Cylindrical body two sides are supported by a pair of bearings 13, are rotated and are processed several independent U-shaped oil ducts in inner shaft 17, U-shaped oil duct surveys pressure
Pilot is connected with two sensors on normal pressure point, wherein having oil outlet 20 and oil inlet of a pair of of oil duct as oil liquid
22, other oil ducts are as pressure testing point；Top plate 12 is capable of fixing the oily rotary support seat 11 of disengaging and by rotation inner shaft 17 in axis
To movement, while oil duct one end can be blocked, prevent oil leak.
Pressure sensor rotary test rack core component is tested oil pocket, rotation inner shaft, disengaging oil rotation support and mark
Quasi- pressure rotation support.This four part combinations, which get up, may be implemented to close the extraction of tested oily cavity pressure.Tested oil pocket 14
Interior pressure pipe is communicated with the oil pipe in rotation inner shaft 17, forms U-tube, and the mutually level levels pressure in U-tube both ends is identical.
Pressure sensor is mounted on to 9 position of interface of 17 oil duct ends, tested 14 inner oil tube pressure against the ends value of oil pocket can be measured.Quilt
It surveys 14 inner oil tube pressure against the ends value of oil pocket and demarcates the sensor for being mounted on rotation 17 oil duct end of inner shaft as normal pressure point.
The pressure tap of 3 different-diameters of design, respectively radius R1 pressure spot 18, radius R2 pressure spot 19 and radius in tested oil pocket 14
R3 pressure spot 21, wherein radius R3 pressure spot 21 is located at the inside of oil duct in rotation inner shaft 17, the diameter of radius R1 pressure spot 18
A pressure pipe is docked greater than the outer diameter of rotation inner shaft 17, therefore on the oil duct that rotation inner shaft is located at tested oil pocket side, it will
Tested pressure sensor is mounted in pressure pipe, and the diameter for rotating inner shaft 17 is inadequate, and external oil can be connected by interface 9
Pipe, keeps U-shaped oil duct both ends liquid level consistent.It can disposably realize that three sensors, the rotary centrifugal force of three kinds of radial directions are special
The test of property.Test procedure is as follows:
It (a) 14 is to process rotating diameter inside tested oil pocket according to test requirements document before testing.
(b) tested pressure sensor is installed to corresponding measuring point position, connects sensor wire, debug test macro
With pressure sensor centrifugal force characteristic test apparatus, prepare test.
(c) temperature is worked as by test lubricating oil temperature sensor displays temperature value according to test requirements document setting test temperature
Value is floated in the region of preset temperature value ± 2 DEG C, indicates that test temperature is stablized.
(d) pressure sensor rotary test rack output oil pressure is adjusted, stablizes oil pressure in tested oil pocket in preset pressure
It floats within the scope of value ± 2%FS, indicates that test pressure is stablized.
(e) it adjusts pressure sensor rotary test rack and exports revolving speed, revolving speed is enabled to export in proper order according to predetermined value.Work as revolving speed
It floats in the region ± 2r/min, indicates stabilization of speed, start recording test related data.Until each revolving speed experimental tests terminates.
(f) step (e) (f) is repeated, until all pressure spots complete cyclic test.
(g) step (c) (e) (f) is repeated, until all temperature spots complete cyclic test.
(h) if desired more emat sensor or rotating diameter, then repeatedly step (b) (c) (e) (f), until all the sensors are pressed
Cyclic test is completed according to predetermined diameter.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of pressure sensor rotary centrifugal force characteristic test system, which is characterized in that the system includes data acquisition display
System, pressure sensor rotary test rack and hydraulic control system；
The pressure sensor rotary test rack is using the sensing waited at height under static pressure calibration rotation status in U-shaped oil duct
Tested pressure sensor is installed in the form of device, U-shaped oil duct one end, and the other end installs standard pressure transducer, U-shaped oil duct and tested
Oil pocket communicates, and standard pressure transducer is fixed, normal pressure of the pressure value of output as the oil duct；Tested pressure sensing
Device and U-shaped oil duct synchronous rotary, output pressure value is as indicating value；The hydraulic control system is pressure sensor rotatory testboard
Tested oil pocket fuel feeding in frame realizes the accurate control of the pressure, temperature and flow of tested oil pocket inner fluid, the data acquisition
System realizes the real-time testing of the pressure, temperature and flow of oil liquid in tested oil pocket, additionally it is possible to provide instead for hydraulic control system
Feedback signal.
2. pressure sensor rotary centrifugal force characteristic test system as described in claim 1, which is characterized in that the pressure passes
Sensor rotary test rack includes power motor, normal pressure rotary support seat, passes in and out in oily rotary support seat, bearing and rotation
Axis；
Process several independent U-shaped oil ducts in the rotation inner shaft, U-shaped oil duct is by two on pressure testing point and normal pressure point
A sensor is connected, wherein having outlet and entrance of a pair of of oil duct as oil liquid, other oil ducts are as pressure testing point；
It is uniformly distributed sensor installation interface along axial direction on the cylindrical body of the normal pressure rotary support seat, is installed in sensor
Interface position is along one week processing groove of inner wall；Groove is the channel of slinger and sensor in connection rotates；Normal pressure rotation
Support base is fixed, and rotation inner shaft is rotated along axis center, no matter the oil duct of tested oil pocket rotate to where, oil duct is recessed
It is connected to always with sensor under the connection effect of slot, oil pressure can directly act on the sensing head of pressure sensor；Pressure sensor
Normal pressure indicating value of the pressure value of output as the oil duct；
The normal pressure rotary support seat and the oily rotary support seat of disengaging form a closed tested oil pocket after docking, revolve
Turn inner shaft to be mounted on by bearing in the installation cavity that normal pressure rotary support seat and Right socle are constituted, rotate U-shaped in inner shaft
The both ends of oil duct respectively correspond sensor installation interface and tested oil pocket, and the power motor driving rotation inner shaft is relative to standard
Pressure rotary support seat and the oily rotary support seat rotation of disengaging.
3. pressure sensor rotary centrifugal force characteristic test system as claimed in claim 2, which is characterized in that the U-shaped oil
When the liquid level that road is located at rotation inner shaft side is less than the liquid level of tested oil pocket side, by rotating branch in normal pressure
It supports and connects external oil pipe on the interface of seat, keep U-shaped oil duct both ends liquid level consistent.
4. pressure sensor rotary centrifugal force characteristic test system as claimed in claim 3, which is characterized in that the hydraulic tune
Section system includes fuel tank, manipulation Oil pump electrical machinery group, control pressurer system, temperature control system, flow control system, oil return system
And auxiliary system；Control pressurer system forms closed-loop control by proportional pressure control valve and pressure sensor, controls static oil recess structure
The pressure of internal liquid；Temperature control system forms closed-loop control by heater, cooler and temperature sensor, for accurately controlling
Make the temperature of static oil recess structure internal liquid；Flow control system forms closed loop control by variable-frequency motor stepless speed regulation and flowmeter
System realizes the accurate control of flow needed for testing；Manipulation Oil pump electrical machinery group and oil return system are uniformly controlled by controller, to oil liquid
Oil liquid needed for carrying out output and recovery control system；Lubricating oil needed for the lubrication unit of auxiliary system provides testing stand, mistake
Filter device ensures the cleannes of oil liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811590226.6A CN109959478B (en) | 2018-12-25 | 2018-12-25 | Pressure sensor rotating centrifugal force characteristic test system |
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| CN201811590226.6A CN109959478B (en) | 2018-12-25 | 2018-12-25 | Pressure sensor rotating centrifugal force characteristic test system |
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| CN109959478A true CN109959478A (en) | 2019-07-02 |
| CN109959478B CN109959478B (en) | 2021-02-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828437A (en) * | 2020-06-19 | 2020-10-27 | 中国北方车辆研究所 | Clutch centrifugal oil pressure testing device capable of adjusting axial space |
| CN112945458A (en) * | 2021-02-02 | 2021-06-11 | 同济大学 | Automatic test system, method and device for pressure gauge |
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| CN111828437A (en) * | 2020-06-19 | 2020-10-27 | 中国北方车辆研究所 | Clutch centrifugal oil pressure testing device capable of adjusting axial space |
| CN111828437B (en) * | 2020-06-19 | 2022-10-28 | 中国北方车辆研究所 | Clutch centrifugal oil pressure testing device capable of adjusting axial space |
| CN112945458A (en) * | 2021-02-02 | 2021-06-11 | 同济大学 | Automatic test system, method and device for pressure gauge |
| CN112945458B (en) * | 2021-02-02 | 2022-05-20 | 同济大学 | Automatic test system, method and device for pressure gauge |
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| CN109959478B (en) | 2021-02-05 |
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