Pneumatic valve testboard operation method

test bed pneumatic valve, pneumatic valve testing equipment is used in pneumatic valves and pneumatic valves after inspection and reliable sealing quality, pneumatic valve pneumatic valve production and maintenance after the disintegration of the last working procedure is pressure detection. Detection methods according to national standards or international standards. American standard ( ANSI/ASME,API） , Germany standard ( DIN) , European standards ( EN） And the international standard ( ISO) Is the most commonly used criteria. Pressure on pneumatic valve sealing performance test bench test can be divided into the following kinds: truncation pneumatic valve, pneumatic valve welding class, although pneumatic valve pressure test standard of each are not identical, but for every kinds of pneumatic valves, detection methods about the same. The most important have the following kinds: detection of pneumatic valve strength; Detection of pneumatic valve, pneumatic valve stem and the seal degree of pneumatic valve shaft coupling; Detection of pneumatic seat or base ( If possible) The sealing degree; Determine the safety of the pneumatic valve pressure jump.

working principle of the pneumatic valve testboard:
test bed hydraulic pneumatic valve in hydraulic, mechanical, electrical, hydraulic supply pump, a hydraulic oil cylinder pressure. Performance test on subjects of pneumatic valve. Hydraulic system is the power of this test rig the main source, used for the hydraulic oil cylinder driving and liquid pump function to perform. Hydraulic oil cylinder compression pressure is adjusted according to the grades of pneumatic valve test pressure different pressure ( The highest hydraulic pressure boost. Mpa） 。 Compact and reliable, functions meet the size test of pneumatic valve size and class. For hydraulic pump device with micro pressure and high pressure second gear, in accordance with the test sequence of operation, under the control of the appliances and reduced pressure regulating pneumatic valve, pneumatic valve medium pressure test, for the pump pressure range is. - 。 Mpa for the pressure medium for rust water or oil. This test bed set up at the bottom of the storage tank to ensure liquid medium circulation use.

pneumatic valve testboard operation method of use:
a clamping, participants pneumatic valves:
according to the size of the subjects of pneumatic valve size, adjust good subjects first pneumatic valve positioning frame and some dynamic compaction button, will move dampers into the corresponding location near the edge of pneumatic valve pressure test subjects, will be tried again pneumatic rotary valve in position on the shelf, pneumatic pressure button will then point pressure of the valve.
2, pressure booster:
according to the subjects of pneumatic valve and the nominal pressure, nominal diameter adjust the electric contact pressure gauge and pressure pneumatic valve the same subjects. With reference to the pressure cylinder pressure needed for CRT will pressure cylinder pressure booster to the required pressure requirements. （ Note: turbo button can point move for many times, each time interval should be at in - Seconds. ） Three, liquid medium pressure:

in accordance with the requirements of participants pneumatic valve test pressure will be reduced pressure adjustment pneumatic valve adjustment to the work required for the position of the pressure. Open the inlet pneumatic valve switch. （ Check whether the inlet pneumatic valve switch is closed) Let water meet the requirements of low pressure low pressure pump work, according to the water pump start button again, for fluid dynamic water pressure to automatically stop when the required pressure. Four, the leakage of the test to complete:

pneumatic valve testing is completed, shut off water switch, pneumatic valve opening pressure pneumatic valve switch, will be after completion of discharge pressure medium, inching loosen button, unload subjects of pneumatic valve. According to the above procedure to test the other pneumatic valves. A, gas medium test:

the gas source connected to the air inlet, closed conduit of the pneumatic valve switch, open the inlet pneumatic valve switch, ready for operation requirements, gas medium performance test can be achieved.

pneumatic valve testboard use notice:
a, pneumatic valve testboard installation: good school equipment placement level or fixed foot screws in concrete.
2, choose - # # hydraulic oil and machine oil into fuel tank, measurement can not be lower than the oil level gauge.
3, ensure that the participants of pneumatic valves not corrosion and the machine for the needs of the medium pressure requirements. The unit water storage tank of liquid medium for antirust water or oil, according to the usage situation in the storage tank.
4, connected to the power supply, started in the oil pump, check the motor rotation direction is correct ( Clockwise direction) , adjust the oil pump in the pressure. Mpa for commissioning, check whether there is any leakage on the line, found that bad phenomenon should immediately for maintenance.
5, test, pneumatic valve, first of all, according to the subjects of pneumatic valve test requirement with reference to the pressure cylinder pressure needed for CRT which can adjust the test pressure increasing. It is forbidden to pressurization ultrahigh pressure work. Prevent damage of deformation of subjects of pneumatic valve.
6, hydraulic pressure pump before work, the first pressure adjustment pneumatic valve adjustment in the corresponding position on the working pressure, medium pressure and then carried out.
7, water storage tank of liquid medium, to be replaced periodically, to new enable anti-rust oil or water in the use of a month or so should be clean water storage tank, and change the rust water and replaced every three months or half a year later.
eight, fuel tank and filter cleaning regularly, the oil tank to change regularly, the oil temperature cannot exceed ℃.
9, test bed rod surface and activities often come on, keep the lubrication is used.