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Cement pressure steam kettle operation steps
DATE:2015-02-07 20:24  Form:未知   Click:

Cement pressure steam kettle operation steps:

1 open the tank cover, water injection volume according to the kettle body 8.5L 7%~10%, i.e. 595cc~850cc distilled water into the kettle.(usually suggest water injection volume: 700 ml ~800 ml)

2 will be equipped with the specimen support in a kettle.

3 use cotton will face clean sealing kettle mouth and the kettle cover,then brush in the kettle mouth sealing surface coated with a thin layer of clean oil.

4 cover lightly with a kettle cover, a kettle cover under pressure andturning left, confirm the combination part has been properly closed. The 10 nut by hand screw. Then the torque wrench according to 50, 100,100Nm, three times according to the diagonal sequence uniformly tighten the nut, installed a kettle cover.

The thermometer cannula for 5 to the center of the kettle cover injected3~5 drops of oil (generally in the oil surface is not higher than themercury thermometer ball is appropriate), the 300 C mercury thermometer gently inserted in the tube.

6 open any two bleed valve in a.

7 electric contact pressure gauge pointer to 2.025MPa red caps (ie: 2MPa by semi lattice); the green pointer to 1.975MPa at the lower limit.

8 close the vent disc and the ventilating ring.

9 connect the power supply, open the power switch on the control box,press the start button, the operation, the heating indicator light, a kettle body begins with the 1800W power heating. At the same time, the digital display time relay began to display.

10 when a bleed valve has been opened with water vapour, illustrate thekettle air has been drained, close the discharge valve. After the valve is closed, the pressure will be increased with the increase of temperatureand (temperature and pressure corresponding to the reference tableattached below) it should be noted at this time, there is no abnormalinstrument work, such as abnormal, you must identify the reasons, or press the stop button to stop the test.

The 11 stop after heating, automatic fan, signal lights, open the vent discand ventilation loop, there will be hot air exhaust ventilation loop,pressure in the kettle will be within 90min below 0.1MPa. At this point,open the bleeder valve. The residual pressure in the kettle on the net.Please don't close the bleeder valve, because after cooling can causethe negative pressure in the kettle, and damage the pressure gauge.

12 after the cement autoclave reactor cooling to room temperature, press the stop button, signal lamp, fan stopped, closing power switch, remove the thermometer, to install the kettle cover the same method, unscrew the 10 fastening nut (screw nut to be at least two cycle, so as not to damage the sealing joint surface), remove the kettle cover, remove the bracket for test piece. With a hose or towel to wipe kettle distilled water precipitationwipe.

The 13 stop test program: press the "stop" button, open the vent disc,ventilation loop, according to "fan" button, to be cooling after re installation of test instrument.

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