Intrinsically safe sensing device for multi-parameter detection of oil

Abstract

The invention relates to an intrinsically safe sensing device for multi-parameter detection of oil. The device comprises an immersed sensor assembly and a control box assembly, wherein the immersed sensor assembly comprises a cylindrical housing, a ferromagnetic abrasive particle adsorption head mounted on the front end of the cylindrical housing, a ferromagnetic abrasive particle sensor and a dielectric sensor mounted inside the cylindrical housing, and a temperature sensor attached to the cylindrical housing; the interior of the immersed sensor assembly is integrally potted by a two-component potting sealant, the cylindrical housing adopts an insulating waterproof material, the control box assembly includes a control box, the inner cavity of the control box is mounted with a circuit board, the ferromagnetic abrasive particle sensor, the power supply cables and the detection signal cables of the dielectric sensor and the temperature sensor are all connected to the circuit board, and the internal circuits of the control box and the immersed sensor assembly are both intrinsically safe circuits. The device provided by the invention can simultaneously detect three oil-related parameters of oil abrasive grains, oil temperature and dielectric, and save installation space.

Description

technical field [0001] The invention relates to a multi-parameter detection device for oil, in particular to a sensing device with intrinsically safe characteristics and suitable for multi-parameter measurement of oil inside mechanical transmission equipment in coal mines. Background technique [0002] Coal mine underground mechanical equipment contains a large number of different types of mechanical transmission systems, such as the rocker arm and traction transmission box of the coal mining machine, the travel transmission box of the roadheader, etc., the gears, bearings and other components contained in these transmission boxes The health status directly affects the normal work of the entire mechanical system. In practical applications, the wear state of the transmission components can be judged by detecting the distribution and accumulation of abrasive particles in the lubricating oil inside the transmission box, and the assembly and working status of the transmission sy...

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Problems solved by technology

[0003] However, most of the traditional sensors can only detect a single parameter. If a multi-parameter fusion test is required, multiple independent sensors need to be arranged. The traditional oil abrasive particle detection sensor needs to be arranged in the lubricating oil pumping pipeline, which is inconvenient to install and easily affects the entire lubrication. For the normal operation of the circuit, when multiple independent sensors need to be arranged, it not only wastes space, but also increases the probability of failure

[0004] In addition, general-purpose sensors for oil detection are generally divided into two independent parts: the sensor probe and the back-end processing circuit; the two are connected by cables, which are greatly disturbed by the electromagnetic environment and the connecting cable is easily squeezed by the equipment in downhole applications. The crushed or fallen coal blocks are smashed, and the reliability is not high

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