Test method of transformer oil gas chromatograph

1 Double click the workstation icon to open the workstation, click channel a, select the standard sample in the sample type, wait for a constant temperature for half an hour to an hour, click Run to see the baseline, after the baseline is stable (no up and down drift), click the range change point, click the coordinate button in the toolbar, and the user specifies the voltage change - 10-200 time for 0-15 minutes 　　 2 Make standard sample - select standard sample in the sample type - double click to view or modify the file method - click the sample and instrument information to select the standard sample file in the drop-down menu after the equipment number, click confirm, then enter the standard sample, wait for the end of the spectrum to default, double-click the spectrum peak to turn green, click the toolbar component to select what peak (if not Come out the component name, click the correction curve 1, open it, and then confirm that the component name) peak sequence: hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, acetylene 3 For oil sample, select the test sample in the sample type and double-click to view or modify the file method at the same time - click the sample and instrument information and select the factory name in the drop-down menu after the equipment number - click the experimental information to change the volume of gas and oil sample, and then confirm Then inject the oil sample After the oil sample is finished, click diagnosis and then print the reading point Applicable to the installed chromatograph: 4 Start up steps: after about 10 minutes of ventilation, open the main engine, press the temperature parameter key, and confirm (column chamber: 60 ° hydrogen flame 120 ° vaporization 70 ° thermal conductivity 80 ° conversion 380 °) After confirmation, press the operation key to heat the chromatograph 2) After the constant temperature light of the chromatograph is on for 15-30 minutes, press the "ignition" switch (observe whether the fire is on when necessary), then press the "bridge flow" switch twice (when the bridge flow is on), 5 Shut down the steps, press the bridge flow switch once, press the stop key to reduce the "conversion temperature" to about 120-150 degrees, and then turn off the switch 6 If you want to make chemical plant oil, you can click equipment library in the toolbar - click Add - fill in the information of chemical plant in the equipment number Then double click to view or modify the file method - click the sample and instrument information, and there is a drop-down menu after the equipment number to find the same transformer information of the same plant and select it Then, the oil sample can be made after changing the information 7 If you want to do the same transformer oil sample every other year, you can double-click to view or modify the file method - click the sample and instrument information - after the equipment number, there is a drop-down menu in which you can find the same transformer information of the same plant, select it or write the folder name of the previous transformer 8 To create a new calibration curve, select and open the new calibration curve under the analysis method, a window will appear, double-click the window under the component name to input the component name in turn In the same way, input the concentration of each component - just confirm 　　 9 Manually determine the peak, first enlarge the spectrum, then click the increase peak on the toolbar, and then click the start point, the vertex and the end point of the peak in turn A dialog box will come out and click OK, then right-click to select refresh / cancel the mode, then reduce the spectrum to display the whole spectrum, and then click diagnosis to print the reading point 10 For the standard sample, if some peaks fail to come out by default, double-click the peak to make it green, and then click the component in the toolbar to select the name in the component name (if not, click the calibration curve 1, and then confirm to see the component name) the method of oil sample: 1) with a large syringe, take 40 ml of oil sample (it should be pressed vertically downward for sampling), and seal it with a red "rubber cap" (squeeze the rubber cap flat and cover it.) The gas in the syringe should be removed After preparation, use a 5ml syringe to extract 5ml of nitrogen (take nitrogen carefully) and inject it into the oil sample, then put it into the shaker for vibration 2) after concussion, extract the gas after concussion with 5ml syringe 3) change the sample type to "test sample" Before oil sample (gas) injection, in terms of software, fill in the oil sample information Under the analysis method, double-click "view or modify the method file", click "experimental information", and fill in the oil sample volume as "40ml" The volume of the gas after the shock collected in the 5ml syringe shall be written down After completion, the oil sample can be injected 4) use 1 ml syringe to take 1 ml of gas after concussion (it should be pressed vertically downward for sampling) Inject chromatograph for analysis Precautions for nitrogen, hydrogen and air integrated machine: a) try not to move during use to avoid gas leakage B) nitrogen, hydrogen and air integrated machine has impurity filtering device, among which the blue is discolored silica gel which will turn red when encountering water, and when the red is more than 2 / 3 of silica gel, it will be replaced or dried (it must be observed frequently that if the instrument is not replaced for a long time, it is not good) When replacing, make sure that the gas is completely discharged after shutdown so that the drying pipe can be easily unscrewed C) the instrument needs to add water regularly, because this is the need to generate gas The position of adding water is to open the black cover on the top and add distilled water The amount of adding water is controlled according to the front level, not more than the white line on the Zui, and the water is added to 1 / 3 of the bottom of the water level D) the nitrogen, hydrogen and air integrated machine can not be turned off until the chromatographic machine cools down, otherwise the chromatographic machine will be damaged Turn off the switch button when shutting down, and unplug the power socket if necessary Note for gas chromatograph a) it is very important to turn on the air source before starting the gas chromatograph for heating, and then turn on the gas chromatograph for heating only after the left 4fa7 pressure gauge has pressure indication for ventilation for about 10 minutes, otherwise it is harmful to the machine B) it is also important to shut down the gas one and a half hours from work, and turn off the gas source only when the "conversion temperature" drops to about 120-150 ℃ and the thermal conductivity is below 80 ℃ and the column chamber is below 50 ℃ In the shutdown step, press the bridge current switch once, and then press the stop key to reduce the "conversion temperature" to about 120-150 degrees, and then turn off the switch C) start up the sample at work, do not need to shut down the lunch and come back in the afternoon Do not move the knob of carrier gas, hydrogen and air, or the air flow ratio will be wrong D) in case of alarm, please refer to the instruction manual E) if the "peak" is lower than before, the aging machine will age the machine The so-called aging machine will add high temperature to the machine to age the high temperature attachment on the detector Aging temperature: column chamber 150 vaporization 100 heat conduction 90 hydrogen flame 150 conversion 390, aging 2-3 hours, long time will not use aging Keep in mind that aging cannot start "bridge flow" (do not press the bridge flow key after setting the temperature and pressing the operation key) aging steps, turn on the air source, set the aging temperature, press the constant temperature such as operation, press the ignition to light the fire, so as to aging for 2-3 hours, press the stop to cool down until all of them fall below the working temperature, set the working temperature and run down to do the same steps for starting up (especially the hydrogen flame temperature does not fall well) Open the front door when you are warm F) do not change the parameters on the instrument Do not change the parameters of the software unless you know it If the needle is blocked during the gas extraction, it can be forced to discharge for several times The injection method must be the same as the last method, so the error data will be smaller It's good to practice more if you are not proficient.