阅读说明：本技术 一种用于对航空煤油浊度进行连续角度散射信号测量的装置 (Device for measuring aviation kerosene turbidity continuous angle scattering signals ) 是由 曹佃生 林冠宇 李炳强 李继峰 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种用于对航空煤油浊度进行连续角度散射信号测量的装置,属于光学测量仪器技术领域,解决了现有的固定角度的测量装置仅对几个特定散射角度的光信号进行测量,不能全面的反映出散射信号的强度大小和分布,无法准确还原航空煤油中的浊度信息的技术问题。本发明的装置包括底座、容器、保护盖、旋转迷宫密封盖、硅光探测器、以及准直激光光源,本发明提供的用于对航空煤油浊度进行连续角度散射信号测量的装置,基于光的散射原理,利用硅光电池探测器,以准直激光光束为光源,对容器中的散射光信号在0°-360°范围内实现连续测量,根据测量信号对容器中航空煤油的浊度进行计算。(The invention discloses a device for continuously measuring angle scattering signals of aviation kerosene turbidity, belongs to the technical field of optical measuring instruments, and solves the technical problems that the conventional angle-fixed measuring device only measures optical signals of a plurality of specific scattering angles, cannot comprehensively reflect the intensity and distribution of the scattering signals, and cannot accurately restore the turbidity information in aviation kerosene. The device comprises a base, a container, a protective cover, a rotary labyrinth sealing cover, a silicon photodetector and a collimated laser light source, and is used for measuring the continuous angle scattering signal of the turbidity of the aviation kerosene.)

1. An apparatus for continuous angle scattering signal measurement of aviation kerosene turbidity, comprising:

a base (5) in which a cavity for placing the container (2) is formed;

the container (2) is arranged in the base and used for containing the aviation kerosene to be tested;

the protective cover (1) is buckled at the top end of the base (5) and is used for shielding and closing the container (2);

the rotating labyrinth sealing cover (3) is rotationally and slidably arranged on the circumferential direction of the base (5), and an opening is formed at one end of the rotating labyrinth sealing cover and used for installing the silicon photodetector (4);

the silicon photodetector (4) is provided with a silicon photocell, is fixed on the rotating labyrinth seal cover (3), and can rotate around the container (2) along with the rotating labyrinth seal cover (3) in the whole circumference, so that the measurement of the scattering signal of the aviation kerosene to be measured in the whole circumference range is realized;

and the collimation laser light source (6) is fixed on the base (5), and the central line of the collimation laser light source is in the rotating plane of the silicon photodetector (4).

2. The device for continuous angle scattering signal measurement of aviation kerosene turbidity according to claim 1, characterized in that the collimated laser light source (6) employs a collimated laser.

3. Device for continuous angular scattered signal measurement of aviation kerosene turbidity according to claim 1, characterized in that said container (2) is a transparent cup-like cylindrical container.

4. Device for continuous angular scattered signal measurement of aviation kerosene turbidity according to claim 1, characterized in that the center line of the collimated laser light source (6) intersects the center line of the container (2) at one point.

5. The device for the continuous angle scattering signal measurement of aviation kerosene turbidity according to claim 1, characterized in that a sealing structure is provided between the base (5) and the rotating labyrinth seal cover (3).

6. The device for continuous angle scattering signal measurement of aviation kerosene turbidity according to claim 5, characterized in that said sealing structure is a silica gel sealing strip.

7. Device for continuous angular scattered signal measurement of aviation kerosene turbidity according to claim 1, characterized in that the protective cover (1) is screwed to the upper edge of the base (5).

Technical Field

The invention relates to the technical field of optical measuring instruments, in particular to a device for measuring aviation kerosene turbidity continuous angle scattering signals.

Background

The content of solid impurities in the aviation kerosene is different, so that the turbidity is different to a certain extent, and when the aviation kerosene is irradiated by collimated laser with the same intensity, the scattered light at different angles is also obviously different. At present, a measuring device with a fixed angle is generally used, and after light emitted by a light source irradiates impurity particles, the measuring device with the fixed angle only measures light signals with a plurality of specific scattering angles, so that the intensity and distribution of the scattering signals cannot be comprehensively reflected, and turbidity information in aviation kerosene cannot be accurately reduced.

Disclosure of Invention

The invention provides a device for measuring aviation kerosene turbidity by continuous angle scattering signals, which aims to measure suspended particles, impurities, insoluble substances and the like in aviation kerosene and obtain the turbidity of an aviation kerosene sample. The scattering signal is measured through the continuous angle, so that continuous data of the scattered light intensity changing along with the angle can be obtained, and the turbidity of the aviation fuel oil is accurately calculated.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention provides a device for measuring aviation kerosene turbidity by continuous angle scattering signals, which comprises:

a base, wherein a cavity for placing a container is formed inside the base;

the container is arranged in the base and used for containing the aviation kerosene to be tested;

the protective cover is buckled at the top end of the base and used for shielding and closing the container;

the rotating labyrinth sealing cover rotates and slides in the circumferential direction of the base, and an opening is formed at one end of the rotating labyrinth sealing cover and is used for mounting a silicon photodetector;

the silicon photodetector is provided with a silicon photocell, is fixed on the rotating labyrinth seal cover and can rotate around the whole circumference of the container along with the rotating labyrinth seal cover, so that the measurement of the scattering signal of the aviation kerosene to be measured in the whole circumferential range is realized;

and the collimation laser light source is fixed on the base, and the central line of the collimation laser light source is in the rotating plane of the silicon photodetector.

Further, the collimated laser light source adopts a collimated laser.

Further, the container is a transparent cup-shaped cylindrical container.

Further, the center line of the collimated laser light source intersects the center line of the container at a point.

Furthermore, a sealing structure is arranged between the base and the rotary labyrinth sealing cover.

Further, the sealing structure is a silica gel sealing strip.

Further, the protective cover is connected with the upper edge of the base through threads.

Compared with the prior art, the invention has the technical effects that:

the device for measuring the aviation kerosene turbidity continuous angle scattering signal provided by the invention is based on the light scattering principle, utilizes a silicon photocell detector, takes a collimated laser beam as a light source, realizes continuous measurement on the scattering light signal in a container within the range of 0-360 degrees, and calculates the aviation kerosene turbidity in the container according to the measurement signal.

In summary, the present invention has two significant advantages: firstly, the scattered light intensity signals obtained by the silicon photodetector are continuous in a detection plane, the backscattering generated by solid particle impurities can be measured, the light intensity information of the solid impurity particles can be more comprehensively obtained, and the measurement accuracy is improved; and secondly, the same detector is used in the whole measuring process of the device, the measuring time is short, so that the self error of the detector in the whole measuring period can be ignored, the problem of detector calibration of a plurality of detector measuring devices is avoided, error sources are reduced, and the reliability of the device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic perspective view of the device for continuous angle scattering signal measurement of aviation kerosene turbidity according to the present invention.

FIG. 2 is a cross-sectional view of the apparatus for continuous angle scattering signal measurement of aviation kerosene turbidity of the present invention.

Fig. 3 is a schematic view of the measuring principle of the measuring device with a fixed angle.

FIG. 4 is a comparison curve of signal values of different concentrations measured by the measuring device of the present invention.

FIG. 5 is a fitted curve and equation to which the measurement device of the present invention is fitted for scatter signals at-22.5.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, the present invention provides an apparatus for continuous angle scattering signal measurement of aviation kerosene turbidity, comprising:

a base 5, in which a cavity for placing the container 2 is formed;

the container 2 is arranged in the base and used for containing the aviation kerosene to be tested;

the protective cover 1 is buckled at the top end of the base 5 and used for shielding and closing the container 2;

the rotating labyrinth seal cover 3 is rotationally and slidably arranged on the circumference of the base 5, and an opening is formed at one end of the rotating labyrinth seal cover and used for installing the silicon photodetector 4;

the silicon photodetector 4 is provided with a silicon photocell, is fixed on the rotating labyrinth seal cover 3, and can rotate around the container 2 along with the rotating labyrinth seal cover 3 in the whole circle, so that the measurement of scattering signals of the aviation kerosene to be measured in the whole circumferential range is realized;

and a collimated laser light source 6 fixed on the base 5, the central line of which is in the rotation plane of the silicon photodetector 4.

Specifically, when the aviation kerosene to be measured is filled in the container 2 during operation, the collimated laser light source 6 emits collimated light beams to irradiate the aviation kerosene to be measured in the container 2, scattering phenomenon can occur in the aviation kerosene due to the existence of suspended particles, impurities, insoluble substances and the like when the aviation kerosene is irradiated by the excited light, the silicon photodetector 4 is rotated and moved along the circumferential direction of the container 2, scattered light signals within the range of 0-360 degrees in a laser irradiation plane can be measured, and the turbidity value in the aviation kerosene can be calculated according to the measured signal value and the angle relation.

In the measuring process, the measured area is required to be an enclosed and light-proof independent space. The silicon light detector 4 with the silicon photocell is fixed on the rotating labyrinth seal cover 3 and can rotate around the container 2 along with the rotating labyrinth seal cover 3 in the whole circumference, so that the measurement of scattering signals in the whole circumference range is realized, meanwhile, the rotating labyrinth seal cover 3 also plays the roles of sealing and shading, and the external light is prevented from entering the container to be directly reflected or being reflected for multiple times to enter the silicon light detector 4, so that the measurement error is caused. The central line of the collimated laser is in the rotation plane of the detector, and the aviation kerosene turbidity information is calculated only through the scattered light signals in the plane.

In a preferred embodiment, the collimated laser light source 6 is a collimated laser. The container 2 is a transparent cup-shaped cylindrical container. The centre line of the collimated laser light source 6 intersects the centre line of the container 2 at a point. And a sealing structure is arranged between the base 5 and the rotary labyrinth sealing cover 3. Specifically, the sealing structure is a silica gel sealing strip. The protective cover 1 is connected with the upper edge of the base 5 through threads. In the invention, the protective cover 1 and the rotary labyrinth sealing cover 3 have light blocking and sealing functions, and the rotary labyrinth sealing cover 3 also has the function of driving the silicon photodetector 4 to move and rotate to complete light intensity signal detection. The base 5, the rotary labyrinth sealing cover 3 and the protective cover 1 shield the container 2 integrally, so that stray light cannot enter in the continuous rotary detection process.

The basic principle of the invention is the light scattering principle, the content of solid impurities in the aviation kerosene is different, the turbidity is different to a certain extent, and when the aviation kerosene is irradiated by the collimated laser with the same intensity, the scattered light under different angles is also obviously different. The intensity and distribution of the scattering signal cannot be fully reflected by the scattered light at a fixed angle, and the fixed angle measuring device is shown in fig. 3, and the fixed angle measuring device only measures the light signals at a plurality of specific scattering angles after the light emitted by the light source irradiates on the impurity particles.

The continuous angle measuring device can more comprehensively measure the intensity and distribution of the scattering signals, and can obtain continuous data of the scattering light intensity along with the change of the angle by measuring the scattering signals at the continuous angle, thereby accurately calculating the turbidity of the aviation fuel and more accurately reducing the turbidity information in the aviation kerosene.

The meaning of continuous measurement is that the best measurement angle can be found through the measurement of kerosene with different turbidity, for inversion, the actually used angle is more than one, and the position and the number of the actually used best angle can be determined only through the measurement under the continuous angle. And the symmetry of the scattered light signal along the light source irradiation direction can be verified.

When the device is used, the aviation kerosene is loaded into the container 2, the base 5 is kept fixed in the whole measuring process, and the protective cover 1 and the rotary labyrinth sealing cover 3 are covered, so that the influence of external stray light and foreign matters on the measurement is avoided. Opening the collimation laser 6, making the collimated laser beam irradiate and pass through the container 2 filled with aviation kerosene, starting to rotate the rotating labyrinth seal cover 3 from a fixed position, the silicon photodetector 4 continuously rotates along with the rotating labyrinth seal cover 3, recording the signal value and the angle value of the silicon photodetector 4 in the rotating process, completing the measurement of the scattered light intensity signal within the range of 0-360 degrees in the measuring plane, and calculating the turbidity of the aviation kerosene according to the measured data and the corresponding angle value.

Specifically, the invention measures 7 solutions with different concentrations, and can see that the solutions with different concentrations have different optical signal values at different scattering angles, and the optical signal and the concentration are different at the same angleThe degrees are positively correlated. As shown in fig. 4, local peak points are set at-22.5 °, 5 ° and +22.5 °, and the other 0 ° and 90 ° positions are set as reference points, and therefore, turbidity measurement can be performed by setting the measurement points at these five angles. The invention uses the scattering signal under minus 22.5 degrees for fitting, can calculate the turbidity values represented by different scattering signals, adopts cubic polynomial for fitting, can show that the fitting degree is better, and the curve and the equation are shown in figure 5. Wherein the abscissa is the detector current value and the ordinate is the concentration value. R of the fitted curve²0.9982, very close to 1, indicates high reliability of the results.

Therefore, the invention can measure the scattered light intensity signals of 0-360 degrees in the continuous angle in the measuring plane of the aviation kerosene in the container, and obtains the size and the distribution of the scattered light intensity signals in the continuous angle in the measuring plane, thereby calculating the turbidity information in the aviation kerosene. The device is matched with other light sources with proper wavelengths, and can calibrate and measure turbidity information of other liquids, so that the device has wide adaptability.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.