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Question:

When the pressure vessel is in hydraulic test, is the pressure gauge container good or the following?

When the pressure vessel is in hydraulic test, is the pressure gauge container good or the following?

Answer:

When the pressure vessel performs hydrostatic test, if it is to measure the external pressure, the pressure gauge is well placed on the container; if it is to measure the internal pressure, the pressure gauge is well under the container.Because all are medium density p, and the pressure vessel are in the position of the upper and lower positions, there is a height difference of H, G=p*g*h and so on according to the density formula under two readings value is not the same, but the pressure, and the height difference can be ignored in this part of small pressure value.Turn left and turn right |Turn left and turn right |Turn left and turn right |
The answer is: absolutely different!!Because all media have density p, and the pressure vessel exists in the upper and lower positions, there is a height difference h between the upper and lower positions, and G=p*g*h is obtained according to the density formulaTherefore, the two readings indicate that the values are inconsistent, but the pressure is greater and the height difference is small. This part of the pressure value can be neglected.
According to the "pressure vessel safety technology supervision regulations", ninety-sixth pressure test, the pressure vessel connection parts of the fastening bolts must be assembled fully, fastening properly. The test pressure gauge shall be in accordance with the relevant provisions of the seventh chapter. At least two gauges with the same range and calibration shall be used and shall be installed at the top of the container to be easily observed.The pressure gauge hits the top and the bottom, the pressure must not be the same, ah, below closed above, a liquid column static pressure?!

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