Bus type oil mist detector

Abstract

The invention discloses a bus type oil mist detector, which comprises a master controller and an oil mist sensor, wherein the oil mist sensor is at least one group, and is arranged at an oil mist acquisition port of a crankcase; and the master controller is electrically connected with the oil mist sensor through a cable. Due to the technical scheme, the bus type oil mist detector has the advantages of small volume, light weight, convenient installation, simpleness and quickness, directly detects the oil mist in each cylinder of the crankcase through the oil mist sensor, and transmits oil mistconcentration electric signals to the master controller through a cable; the mounting position of the cable is obviously smaller than the position of a pipeline; and the bus type oil mist detector at least can detect diesel engines with 20 cylinders, obviously enlarges a detection range, and detects each cylinder independently without interference, has the advantages of short signal transmission time and high detection accuracy, avoids a condition of false alarm or no alarm, can detect failure parts so as to maintain the failure parts directly according to display parts and save time and labor, reduces mechanism transmission wear, and prolongs the service life.

Description

technical field [0001] The invention relates to a diesel engine safety automatic protection device, in particular to an oil mist concentration detector. Background technique [0002] Large-scale diesel engines are widely used as power for ships, locomotives, and generator sets. Faults will inevitably occur during use. The main faults come from the wear of moving parts inside the diesel engine, damage to parts, and excessive concentration of oil mist in the crankcase. If it is not found and repaired in time, it will cause a large loss, and even cause the entire diesel engine to be scrapped. Now the oil mist detector is generally used to detect the oil mist concentration in the crankcase. The existing oil mist sensor includes the box , main controller, oil mist sensor, rotary valve, air pump, exhaust port, the main controller, oil mist sensor, rotary valve and air pump are located in the box. When in use, the oil mist of each cylinder is sucked into the oil mist sensor by the...

AI Technical Summary

Problems solved by technology

[0004] 1. During installation, the oil mist inlet of the oil mist detector is connected to the crankcase through a pipe (such as a steel pipe), and the oil mist of each cylinder of the crankcase is connected to the oil mist sensor. The required installation position is large, such as If there are too many crankcases, there will be more pipelines to be installed and arranged. Due to the limited position between the crankcases, the installation and layout of the pipelines is limited, which limits the detection range of the number of cylinders in the crankcase. Only nine cylinders can be detected at most. diesel engine;

[0005] 2. The oil mist in the oil mist sensor is not easy to drain after detection, and it is easy to mix the oil mist of each cylinder after detection, which will affect the detection accuracy and cause false alarms or no alarms;

[0006] 3. The pipeline is too long, and it takes a while for the oil mist to enter the oil mist sensor, which makes the signal transmission time too long, usually 25 seconds;

[0007] 4. The installation and connection of the pipeline is cumbersome and labor-intensive;

[0008] 5. The whole machine is heavy and bulky, the rotary valve needs to be driven by a motor, there are many parts, the cost is high, and the rotary valve is not easy to process;

[0009] 6. The oil mist is absorbed by mechanical rotation, which has a large wear and a short service life

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