Measurement method of drip separator efficiency when diesel engine is running
A measurement method and separator technology, which is applied in the testing of machine/structural components, testing of mechanical components, measuring devices, etc., can solve the problems of large deviation of query readings, poor versatility, and low accuracy, and achieve universality Effect
Active Publication Date: 2020-01-17
HUDONG HEAVY MACHINERY
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Problems solved by technology
The existing measurement method of drip separator efficiency of low-speed machines is generally based on the experience of MAN, query curves, only integer multiples of relative humidity and scavenging pressure curves, can only be based on temperature and humidity and theoretical power per kwh corresponding to scavenging Estimated by the water content in the air, the accuracy is low, the versatility is poor, and the query readings on the curve table have a large deviation, it is difficult to accurately calculate the efficiency of the drip separator
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Embodiment
[0027] Under the 100% load of the 6G70ME-C9.2 host, the efficiency of the drip separator is measured.
[0028] Step 1: Open drain holes directly below the drip separator, the front side and the rear side of the airflow direction, arrange the flange 6, the pipeline 7 and the valve 8, and arrange the thermometer 5 behind the air cooler, Arrange the differential pressure gauge 4 in front of the air cooler. Under 100% load, after the working condition of the diesel engine is stable, use the small bucket 9 to collect the condensed water released from three places for 10 minutes, and weigh it as 19.77kg, then it can be calculated that the condensed water released in 1 hour is 118.6kg;
[0029] Step 2: Use thermometer 1 to measure the air intake temperature at the inlet of the supercharger as 18.9°C, measure the atmospheric pressure as 763.5mmHg with differential pressure gauge 2, and measure the relative humidity at the inlet of the supercharger as 62.1% with hygrometer 3 . Check ...
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The invention relates to a method for measuring the efficiency of a drip separator during the operation of a diesel engine. According to the method, the mass Q <practical> of water in scavenging air which is actually separated out in a certain period by the drip separator is measured; the temperature, pressure and humidity of fresh intake air, and the temperature and pressure of compressed air before and after entering an air cooler are measured, and the mass Q <theoretical> of theoretically separable water in the compressed air is calculated; and the efficiency E of the drip separator can becalculated according to an equation E= mass Q <practical> / mass Q <theoretical>. The method of the invention is a reliable measuring method for the efficiency of the drip separator and is more accurateand more universal than an MAN chart empirical value method. With the method of the invention adopted, the measurement of the efficiency of the drip separator when main machines of different types are under different working conditions can be facilitated, and excessive condensed water can be prevented from entering an air cylinder and causing damage.
Description
technical field [0001] The invention relates to a marine diesel engine, in particular to a method for measuring the efficiency of a drip separator when the diesel engine is running. Background technique [0002] The drip separator is an important part of the diesel engine. It is located in the air cooler frame of the diesel engine scavenging air intake, specifically after the air cooler core in the direction of the scavenging air intake air flow, before the scavenging air header, and at the bottom of the air cooler frame . The fresh air is supercharged by the turbocharger and the temperature rises to about 200°C. After being cooled by the air cooler, the temperature of the scavenging air drops to about 30°C. Because of the difference in air humidity, a large amount of condensed water will be generated. The water must pass through the drip separator to separate about 95% of its condensed water, so as to prevent the scavenging air with water from entering the cylinder, which ...
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IPC IPC(8): G01M13/00G01M15/04
CPCG01M13/00G01M15/04
Inventor 陈怡然王冬冬余志利
Owner HUDONG HEAVY MACHINERY