Diesel oil cold filter plugging point automatic determination system and determination method

Abstract

The invention relates to a diesel oil cold filter plugging point automatic determination system and a determination method. The invention discloses the diesel oil cold filter plugging point automatic determination system and the method for determining a diesel oil cold filter plugging point by using the system. The system comprises a rapid refrigeration instrument and an automatic suction filtration determination machine which are electrically connected with each other and used in cooperation, the rapid refrigeration instrument and the automatic suction filtration determination machine are both redesigned, the suction filtration effect of the automatic suction filtration determination machine reaches an existing SH / T 0248-2006 method standard, the rapid refrigeration instrument has a simplified structure compared with that in the prior art, the size is reduced, parts are few, and a portable purpose is achieved.

Description

technical field [0001] The invention relates to the technical field of diesel detection detection, in particular to an automatic detection system and detection method for the cold filter point of diesel fuel. Background technique [0002] Diesel cold filter point means that the diesel oil sample is cooled under specified conditions, pumped under the pressure of 1961Pa (200mm water column), and the cooled diesel oil sample is passed through a 363-mesh filter. Minimum temperature at 20ml / min. The lower the temperature, the better the fluidity of diesel fuel at low temperature, and the less likely it is to block the filter. Therefore, the cold filter point is one of the important indicators in diesel specifications. [0003] The existing diesel cold filter point measuring instrument is generally composed of a suction filtration device and a refrigeration device, wherein the suction filtration device conforms to the existing SH / T 0248-2006 method standard. Gas velocity to ach...

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Problems solved by technology

But its disadvantages are also very obvious. 1) Power consumption is the biggest disadvantage of compressor refrigeration. Usually, the energy loss of a large compressor can reach 5%-20%. Although the power consumption of a small compressor is small, but Due to the wide range of applications and the huge quantity, the annual power consumption is still shocking; 2) Due to the limitation of the compressor structure, many models are prone to leakage of working fluid, which is likely to cause irreversible damage to the environment, and the machine itself is also due to this reason It is not easy to achieve a high compression ratio; 3) Compressor-type refrigerators are often accompanied by large vibration and noise during operation, which also has a large limit on their service life; 4) Many complete machines are relatively large in size and weight , lightweight production is difficult, and it is even more impossible to achieve wearable or portable requirements, so it is difficult to impact the military application market

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