Analyze the principle of Jones sampler and where it needs to be improved
April 14 01:07:11, 2024
The principle of the Jones sampler is correct, but from its structural analysis, there is an unreasonable problem with the layout of the sample slot. The sampler is a structure in which the number of three sampling slots is arranged up and down and centered. Each sampling slot has 18 slots. The center lines of the upper and lower sampling slots are on the same plumb line. During work, after the rock sample poured from above is diverted by the first layer sampling tank, it is possible to form two 1/2 parts, but the upper and lower tanks are arranged in the center and flow down the stream of rock sample and the section along the tank. The distribution in the broad direction is more in the middle and less on both sides. Therefore, most of the rock sample flowing from the sampling slot in the sample slot (l) will enter the sample slot (3) and be opposed to it. In each wine between the phases, the rock samples in the other phase separation grooves in the sampling groove (3) are a small part, and the adjacent sampling grooves are arranged in the reverse direction. On one side, the less rock samples flow to the other side. Therefore, the ratio of the rock samples diverted from the sampling tank (3) will not be equal and the error will be large. In the same way, the ratio of the two samples of the rock samples that are run out of the sampling tank (5) will not be equal.
The proportion of the sample of the original Jones sampler is not divided into the first 1/2 part, but the remaining 1/4, 1/8, and 1/8 parts cannot be formed, and the resulting error will follow the sample The increase in the number of trough layers will increase, ie, the ratio of the two fractions of the 1/8 part used in the final reduction for geological analysis will be the largest. After the above analysis and through actual understanding, it is confirmed that this is indeed the case in use. If blindly mimicking the original design and then using the device, rock samples that disproportionately require geological analysis and analysis will be provided.
It has been further verified in the field production test, fully demonstrating that the design of the GF sampler is reasonable. Compared with the commonly used Jones sampler in foreign countries, the sampler minimizes the non-uniformity of the sample during the shrinking process, thereby further improving the reliability of the CSR sample.