Oil Medium Pressure Pulse Fatigue Testing Machine

Oil Medium Pressure Pulse Fatigue Testing Machine | PTM307A-HFWIntroduction
The oil medium pressure pulse fatigue testing machine mainly tests the cyclic pressure durability and temperature durability of automotive pipelines (air conditioning tubes, refrigeration pipelines), automotive components (oil coolers, evaporators, plate heat exchangers, radiators, condensers). Computer controlled test process and data collection, high integration, good stability, simple, reliable and durable, widely used in automotive technology center, product quality inspection institute, automotive parts factory, research institute and other institutionsPeak pulse pressure: 1-30MPa (Setting freely)
New featuresHigh control precision. Test waveform diversity.Interface setting, program control, end or exception automatic stop.Test pressure and temperature setting within the allowable range, and real-time detection. Pre-set pressure test process. Including peak pressure, valley pressure, boost time, dwell time, Decompression time, pulse frequency, cycle number, medium temperature, environmental chamber temperature, waveform and other related parametersThe slave system controller runs independently, completely separated from the control of the upper computer, and runs under long-term steady state.The hydraulic control cabinet combines the hydraulic power unit and the media system organically. easy to carry and installation and maintenance.Ambient temperature and medium temperature rise using separate systems.FunctionsIn order to simulate the actual working condition of the specimen, the pressure pulse fatigue test can be carried out according to the standard requirements.Automatic collection, storage and processing of test data, automatic establishment of test database, and the data can be inquired and stored for a long time at any time.Report generation. The test can be completed to call out data to generate reports.Setting test parameters. The test parameters can be saved in the computer every time, and can be extracted directly next time when the same parameters are tested without setting them again.Recording function. Record the time and status of the failure and the operation steps.Complete security function:a) Emergency stop function;
b) The liquid level alarm and over temperature alarm shutdown function of the hydraulic station fuel tank;
c) The liquid level alarm and an over temperature alarm shutdown function of the media tank;
d) The pressure drops rapidly after the test piece breaks, and the pressure is automatically stopped;
e) Interlocking door with auto-shutdown protection during the experiment;
f) Motor overload alarm shutdown function.
Media circulation systemMedium circulation system consists of medium tank, medium pump and pressure gauge. It is used to circulate the high-temperature medium to the specimens and exhaust the gas, and pump the high temperature medium into the rehydration container at the time of the high temperature test rehydration.Environmental test chamberThe environmental test chamber is mainly composed of the chamber body, the air conditioning system, control system, safety protection unit, and the specimens mounting bench, etc. The chamber provides the specimens with a working space that meets the environmental temperature requirements.
The environmental test chamber is integral, the upper chamber is the workshop, the width direction opens the door, the rear is the air duct system, Air supply motor, centrifugal fan blade and heater are respectively installed inside.
The outer wall material is cold-rolled steel plate with electrostatic double-sided spray molding, and the color is RAL9010. The inner wall material is SUS304 matt stainless steel plate.
An overflow box is installed at the bottom of the workroom, which can be used to clean and collect all kinds of leakage liquids in the test after filtration. A liquid level switch is set inside the box. When the liquid level in the overflow box is too high, an alarm signal will be sent out. The top is equipped with a light for observation, cleaning, mounting specimen and testing. At the bottom, there is a threaded interface of the mounting platform, which can be used to install connecting fixtures.Software control systemThe software runs on the Windows platform and is edited using National Instruments' Labview editing software. Labview is a graphical programming language widely used in industry. which can display various pressure signals in real time, and the pressure signals can be drawn into curve charts to visually display the change trend of pressure for data analysis.
Parameters
NameItemsparametersmain frame systemPressure systemTesting mediumHigh temperature resistant hydraulic oil, mineral hydraulic oil, etc. (boiling point 160 provided by the customer)Peak pulse pressure1-30MPa (Setting freely)Pressure measurement accuracy±0.5%FSPressure control accuracy±2%FSPulse generatorHydraulic servo cylinderPressure control modeElectric hydraulic servo controlPulse frequency0.1-1.5 HzPulse pressure waveformTrapezoidal wave, sine wave, when sine wave, medium does not cycle, medium temperature is not controllable.specimensAir conditioning tube, evaporator, condenser, coolerSpecimen quantity1~ 8 pieces at a time (match the number of test pieces according to the actual specifications, the smaller the content is, the more the number of test pieces is).Expansion of specimen≤400mL (when the total expansion of the specimen is large, the pulse frequency is low)Exhaust wayAuto exhaustionNumber of pulse in a single testArbitrarily set according to test standardsMedium temperature system Medium temperatureTemperature rise RT+10~150±2°C adjustable
Natural coolingMedium temperature deviation≤±2ºCMedium heating modeDirect heatingEnvironmental test chamberInside dimensionsDeep x width x height = 800mmx1300mmx800mmTemperature range-40 ~150±2ºC adjustableTemperature deviation±2ºC (at no load)Temperature rise rateAverage temperature ≤5ºC/min (at no load)Temperature fall rateAverage temperature ≤1ºC/min (at no load)Pressure connector8-way connector, total volume ≤1000mlsafety doorDirectly facing the test cabin(workshop), open the door on the left and right sides, with door limit prompt.illuminationTest chamber has lighting (high efficiency and long life LED light source)observation windowView window facing the test cabin(workshop).Computer control systemPulse waveform1) Pulse waveform control: Intelligent hydraulic servo control technology is adopted, and the pulse pressure waveform, pulse number and medium temperature are arbitrarily set within the controllable range.
2) Pressure test waveform: trapezoidal wave, sine wave, triangle wave.Pressure waveform accuracyThrough intelligent PID control, pressure control accuracy can reach 2%FS, pressure measurement accuracy can reach 0.5%FS.OthersWhen the temperature, the pressure exceeds the maximum range, or leaks sound and light. The machine has an alarm, emergency stop functionAlarm points can be set for specimen leakage. When the leakage reaches a certain level, the system will automatically alarm and stop working.The test system provides corresponding equipment calibration conditions (such as pressure sensor calibration interface).PCSlave computerAmerican NI controllerUpper computerIndustrial computerSoftware Control software Wance pulse special softwareReporting formatMicrosoft OfficeRemarkBecause the medium temperature system and the environment temperature system only have the heating function, without the refrigeration function, all cannot do the medium temperature value lower than the environment temperature value test, otherwise needs to consider to increase the medium heating and cooling machine or plate heat exchange system.