Multi-parameter optical online analyzer

Abstract

The invention discloses a multi-parameter optical online analyzer which comprises a pipeline, the device is characterized in that a light source assembly for monitoring liquid passing through the pipeline on line and a detector assembly which corresponds to the light source assembly and is used for detecting light emitted by the light source assembly are arranged in the pipeline; each of the light source assembly and the detector assembly comprises a power supply driving module; the light source assembly further comprises a light source and a light intensity detection compensation module for detecting the light intensity of the light source; the detector assembly further comprises a detector, a polariscope and a rotating device for driving the polariscope to rotate. The light source assembly and the detector assembly are directly installed in the pipeline, liquid passing through the pipeline is directly detected on line, therefore, substances passing through the pipeline are detected in real time, and the detection convenience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polarimeter, and particularly discloses a multi-parameter optical online analyzer. BACKGROUND

[0002] In the prior art, a desktop polarimeter is often used to detect the optical activity of a substance. During detection, the substance to be detected is sampled and placed in a glass tube of the desktop polarimeter, and then a light source enters the substance in the glass tube from the outside of the glass tube. This method uses an offline sampling mode, which reduces the convenience of detection. Moreover, the light source enters the glass tube from the outside of the glass tube, which easily causes external factors to affect the detection result, thereby reducing the accuracy of detection. Therefore, the multi-parameter optical online analyzer is proposed. SUMMARY

[0003] The present application aims at solving the above problems and provides a multi-parameter optical online analyzer.

[0004] In order to achieve the above purpose, the present application provides the following technical scheme: a multi-parameter optical online analyzer, comprising a pipeline; characterized in that the pipeline is provided with a light source assembly for online monitoring of the substance in the pipeline and a detector assembly corresponding to the light source assembly and detecting the light emitted by the light source assembly; the light source assembly and the detector assembly each comprise a driving module; the light source assembly further comprises a light source and a light intensity detection compensation module for detecting the light intensity of the light source; and the detector assembly further comprises a detector, a polarizer and a rotating device for driving the polarizer to rotate.

[0005] Preferably, the light source assembly and the detector assembly each further comprise an outer shell and a window piece mounted on the outer shell for sealing the outer shell.

[0006] Preferably, the outer shell of the light source assembly and the detector assembly is selectively provided with a reflecting mirror according to the mounting mode.

[0007] Preferably, the light source assembly further comprises a light condensing cup mounted in the outer shell for condensing light and fixing the light intensity detection compensation module, a collimating lens group for obtaining parallel light source and a polarizer two.

[0008] Preferably, the detector assembly further comprises a light condensing lens group for condensing light so that more light can be detected by the detector.

[0009] Preferably, the window piece is made of a corrosion-resistant and wear-resistant optical material such as sapphire.

[0010] The application has the beneficial effects that by directly installing the light source assembly and the detector assembly in the pipeline, the liquid passing through the pipeline is detected directly on line, so that the substance passing through the pipeline is detected in real time, and the convenience of detection is improved. The light intensity of the light source is detected by the light intensity detection compensation module in the light source assembly, and then the light intensity after passing through the liquid is detected by the detector assembly, the concentration of the corresponding absorption liquid is calculated by using the absorption degree of the light, and the concentration of the corresponding optical rotation liquid is calculated by using the polarization angle of the polarizing mirror rotated by the rotating device, so that different types of liquids can be detected at the same time, and the use range is expanded. The light source assembly and the detector assembly are directly installed in the liquid in the pipeline, the light emitted from the light source assembly is directly in the liquid, and the detector assembly is used to receive the light in the liquid, the interference of external factors on the inspection is reduced, and the accuracy of the detection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the application.

[0012] Figure 2 It is a structural schematic diagram of the light source assembly of the application.

[0013] Figure 3 It is a structural schematic diagram of another light source assembly of the application.

[0014] Figure 4 It is a structural schematic diagram of the detector assembly of the application.

[0015] Figure 5 It is a structural schematic diagram of another detector assembly of the application.

[0016] Figure 6 It is a straight pipe installation schematic diagram of the application.

[0017] Figure 7 It is a 90-degree angle installation schematic diagram of the application.

[0018] Figure 8 It is a straight pipe misplacement installation schematic diagram of the application.

[0019] Figure 9 It is a return type pipe installation schematic diagram of the application.

[0020] Figure legend: 1, pipeline; 2, light source assembly; 201, light intensity detection compensation module; 202, light cup; 203, collimating lens group; 204, polarizer two; 205, light source; 3, detector assembly; 301, detector; 302, polarizer; 303, condenser lens group; 4, driving module; 5, outer shell; 501, window piece; 502, mirror; 6, rotating device; 601, micro motor; 602, transmission shaft; 603, transmission gear. DETAILED DESCRIPTION

[0021] Next, we will make further description of the multi-parameter optical online analyzer according to the accompanying drawings.

[0022] It should be noted that all directionality indications in the embodiments of the present application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship between components, movement conditions, etc. in a certain specific posture, as shown in the drawings. If the specific posture changes, the directionality indications will also change accordingly.

[0023] Referring to the accompanying drawings Figures 1-9 In the multi-parameter optical online analyzer of the present embodiment, a pipeline 1 is provided, characterized in that the pipeline 1 is provided with a light source assembly 2 for online monitoring of the liquid passing through the pipeline 1 and a detector assembly 3 corresponding to the light source assembly 2 and detecting the light emitted by the light source assembly 2. The light source assembly 2 and the detector assembly 3 both include a driving module 4. The light source assembly 2 further includes a light source 205 and a light intensity detection compensation module 201 for detecting the light intensity of the light source 205. The light intensity detection compensation module 201 is a photodiode. The detector assembly 3 further includes a detector 301, a polarizer 302, and a rotating device 6 for driving the polarizer 302 to rotate. By directly installing the light source assembly 2 and the detector assembly 3 in the pipeline 1, the liquid passing through the pipeline 1 can be directly detected online, thereby realizing real-time detection of the substance passing through the pipeline 1 and improving the convenience of detection. The light intensity detection compensation module 201 in the light source assembly 2 detects the light intensity of the light source, and then the detector assembly 3 detects the light intensity after passing through the liquid. The concentration of the corresponding absorbing liquid is calculated by using the degree of absorption of light, and the concentration of the corresponding optically active liquid is calculated by using the polarization angle of the polarizer 302 driven by the rotating device 6 to rotate, thereby facilitating the detection of different types of liquids at the same time and expanding the range of use. The light intensity detection compensation module 201 detects the light intensity of the light source, thereby facilitating the timely replacement of the light source and ensuring the normal use of detection. The light source assembly 2 and the detector assembly 3 are directly installed in the liquid in the pipeline 1, the light emitted in the light source assembly 2 is directly in the liquid, and the light is received in the liquid by the detector assembly 3, so that the interference of external factors on the inspection is reduced, and the accuracy of the detection is improved.

[0024] Referring to the accompanying drawings Figures 4-5 As shown in the drawings, the rotating device 6 comprises a micro motor 601, a transmission shaft 602 connected with the micro motor 601, and a transmission gear 603 connected with the transmission shaft 602 and engaged with the polarizer 302 to drive the polarizer 302 to rotate; the micro motor 601 drives the transmission shaft 602 to rotate, the transmission shaft 602 drives the transmission gear 603 to rotate, and the transmission gear 603 drives the polarizer 302 engaged with it to rotate, so as to drive the polarizer 302 to rotate, and facilitate detection of the concentration of optically active substances. Meanwhile, the rotating device 6 can also select other rotating device structures that can drive the polarizer 302 to rotate at a constant speed.

[0025] Referring to the accompanying drawings Figures 2-5 As shown in the drawings, the light source assembly 2 and the detector assembly 3 also comprise an outer shell 5 and a window sheet 501 installed on the outer shell 5 to seal the outer shell 5; the outer shell 5 of the light source assembly 2 and the detector assembly 3 is selectively installed with a mirror 502 according to the installation mode; the window sheet 501 is made of sapphire or other corrosion-resistant and wear-resistant optical materials; the corrosion-resistant and wear-resistant optical materials used in the window sheet 501 improve the corrosion-resistant and wear-resistant performance of the window sheet 501, and a sealing ring is installed on the window sheet 501 to increase the sealing between the window sheet 501 and the outer shell 5.

[0026] Referring to the accompanying drawings Figures 2-3 As shown in the drawings, the light source assembly 2 further comprises a light collecting cup 202 fixedly installed in the outer shell 5 to collect light and a light intensity detection compensation module 201, a collimating lens group 203 to obtain parallel light source, and a polarizer two 204; the detector assembly 3 further comprises a light collecting lens group 303 to collect light so that more light can be detected by the detector 301.

[0027] In the use process of the present application, the light source 205 emits light of a certain wavelength, which is collected by the light collecting cup 202, and then is processed into parallel light by the collimating lens group 203. The light intensity detection compensation module 201 senses the light intensity of the light at the light collecting cup 202, such as direct light, and the parallel light passes through the polarizing mirror 204 to obtain polarized light, such as 90-degree reflection, and the parallel light passes through the mirror 502 and then passes through the polarizing mirror 302 to obtain polarized light. Then the light passes through the window sheet 501 and enters the medium to be measured. After the light passes through the medium to be measured, it successively passes through the window sheet 501, the polarizing mirror 302 and the light collecting lens group 303 in the detector assembly 3 to reach the detector 301. When it is 90-degree reflection, the light needs to pass through the mirror 502 after passing through the window sheet 501, and then reaches the polarizing mirror 302; When the medium to be measured is an optically active substance, when the light reaches the polarizing mirror 302, the driving module 4 controls the micro motor 601 to drive the transmission shaft 602 to rotate, the transmission shaft 602 drives the transmission gear 603 to rotate, and the transmission gear 603 drives the polarizing mirror 302 engaged therewith to rotate, so as to facilitate the rotation of the polarizing mirror 302 until the polarizing mirror 302 rotates at a constant speed. When the angle of the polarized light matches the polarizing mirror 302, the light passes through the polarizing mirror 302 and is detected by the detector 301. At this time, the driving module 4 can obtain the polarization angle of the polarized light, which can be calculated by the following formula: [α] = α / l × c [α] is the optical rotation, α is the polarization angle, l is the length of the light path through the sample, and c is the concentration of the optically active substance. From the above formula, it can be seen that the optical rotation of the optically active substance is determined, and the length of the light path through the medium to be measured is also fixed. Therefore, by measuring the polarization angle, the concentration of the optically active substance can be obtained. When the medium to be measured is not an optically active substance, the light intensity detection compensation module 201 senses the light intensity of the light at the light collecting cup 202, detects the light intensity of the light at the beginning, and then when the light passes through the medium to be measured in the above-mentioned manner to reach the detector 301, the detector 301 detects the light intensity of the received light, so as to determine the attenuation amount of the light intensity and obtain the concentration of the absorbing substance corresponding to the wavelength in the medium.

[0028] The above embodiments are illustrative of the present application, but are not limiting of the present application. Any simple transformation of the present application also belongs to the protection scope of the present application.

Claims

1. A multi-parameter optical online analyser comprising a pipe (1); characterised in that The pipeline (1) is provided with a light source assembly (2) for on-line monitoring of liquid flowing through the pipeline (1) and a detector assembly (3) corresponding to the light source assembly (2) and detecting light emitted by the light source assembly (2); the light source assembly (2) and the detector assembly (3) each comprise a driving module (4); the light source assembly (2) further comprises a light source (205) and a light intensity detection and compensation module (201) for detecting light intensity of the light source (205); the detector assembly (3) further comprises a detector (301), a polarizer (302) and a rotating device (6) for driving the polarizer (302) to rotate.

2. A multi-parameter optical on-line analyser according to claim 1, characterised in that: The rotating device (6) comprises a micro motor (601), a transmission shaft (602) connected to the micro motor (601) and a transmission gear (603) connected to the transmission shaft (602) and engaged with the polarizer (302) to drive the polarizer (302) to rotate.

3. A multi-parameter optical on-line analyzer according to claim 1, characterized in that: The light source assembly (2) and the detector assembly (3) each further comprise an outer housing (5) and a window sheet (501) mounted on the outer housing (5) to seal the outer housing (5).

4. A multi-parameter optical on-line analyser according to claim 3, characterised in that: The outer housing (5) of the light source assembly (2) and the detector assembly (3) is selectively provided with a reflector (502) according to the mounting mode.

5. A multi-parameter optical on-line analyser according to claim 4, characterised in that: The light source assembly (2) further comprises a light collecting cup (202) mounted in the outer housing (5) for collecting light and fixing the light intensity detection and compensation module (201), a collimating lens group (203) for obtaining parallel light source and a second polarizer (204).

6. A multi-parameter optical on-line analyser according to claim 4, characterised in that: The detector assembly (3) further comprises a light collecting lens group (303) for collecting light so that more light can be detected by the detector (301).

7. A multi-parameter optical on-line analyzer according to claim 3, characterized in that: The window sheet (501) is made of sapphire or other corrosion-resistant and wear-resistant optical materials.

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