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Oil fog concentration measuring apparatus

A technology for oil mist concentration and measuring instruments, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of complex operation, different measurement media, and inability to carry out online monitoring, etc., and achieve the effect of accurate measurement results and simple operation

Inactive Publication Date: 2008-12-31
沈阳佳益油雾技术有限公司
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Problems solved by technology

There are four deficiencies in existing products: 1. The measurement medium is different. The measurement medium here is a gas-liquid two-phase flow with liquid as the discrete phase. The particle size of the oil mist is 1-3 μm, and the concentration range is 3-12g / m 3 ; 2. Unable to conduct online monitoring; 3. Unable to perform quantitative measurement; 4. Complicated operation and expensive equipment

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  • Oil fog concentration measuring apparatus
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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings. The working conditions set up in this embodiment are under the condition of oil mist lubrication, the diameter of oil mist particles is 1-3 μm, and the concentration range is 3-12 g / m 3 under conditions.

[0028] The invention consists of a light source transmitter, a polarizer, a protective mirror, a fog chamber, an analyzer and a light source receiver. Among them, the light source transmitter is powered by DC +12V voltage. In order to obtain stable luminous power, a new generation of integrated voltage regulator chip LM2575 produced by National Semiconductor Corporation of the United States is used. Its internal integrated oscillator has current limit and thermal shutdown. And other perfect protection circuit, so only a small number of peripheral components can form a high-efficiency voltage regulator circuit, simple structure, strong anti-interference ability, in mos...

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Abstract

The invention discloses a measuring instrument of oil mist density, which belongs to the technical field of the dispersed-phase density measurement of multiphase flow, and comprises a light emitter, a polarizer, a safety spectacle, a mist chamber, a polarization analyzer and a light receiver. Parallel lights emitted from the light emitter form planar polarized lights through the polarizer; the planar polarized lights react with tiny oil mist particles in the mist chamber then oscillating planes thereof deflect, and the transmitted lights passing through the polarization analyzer are received by the light receiver which detects the optical intensity change of the planar polarized lights in situations with different oil mist densities, realizes photoelectric conversion and outputs direct current voltage, and the oil mist density is obtained directly by a voltage-density exchange table. The measuring instrument of oil mist density of the invention can implement online measurement and quantitative measurement, and has simple operations and accurate measuring results.

Description

technical field [0001] The invention belongs to the technical field of multiphase flow discrete phase concentration measurement, and in particular relates to an oil mist concentration measuring instrument. Background technique [0002] At present, the measurement methods of discrete phase concentration in multiphase flow can be divided into direct method and indirect method according to the principle. The direct method is to directly obtain the concentration information of the discrete phase of the multiphase flow through sensitive components. The instruments used mainly include the crankcase oil mist detector of the main engine of the ship, infrared oil measuring instrument, dust monitor, pulverized coal concentration sensor, meteorological satellite, etc.; The indirect method is to first adsorb the tiny particles in the oil mist, and then use weighing, fluorescence excitation and other methods for secondary analysis. The equipment used includes filter membranes, balances, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/21G01N21/03
Inventor 宋锦春陈建文张志伟王家鹏
Owner 沈阳佳益油雾技术有限公司
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