CN214408681U

CN214408681U - Non-contact UV absorbs light path device

Info

Publication number: CN214408681U
Application number: CN202120057169.6U
Authority: CN
Inventors: 李芳昀; 吴小雨; 潘海宁
Original assignee: Hangzhou Sigmaro Electro Optical Technology Corp ltd
Current assignee: Hangzhou Sigmaro Electro Optical Technology Corp ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-10-15
Anticipated expiration: 2031-01-11

Abstract

The invention discloses a non-contact UV absorption optical path device, belonging to the field of online water quality monitoring; the non-contact UV absorption optical path device comprises a measuring box, a water sample supply assembly and an optical probe assembly; the measuring box is used as an optical measuring place and provides a stable environment for light path generation and water sample supply; the water sample supply assembly is arranged at the top of the measuring box and is used for introducing a measured water sample and forming a stable water column in the measuring box; the optical probe components are arranged on two opposite side walls of the measuring box and used for generating a UV light path, and the UV light path is vertically intersected with the water sample column to form a non-contact UV absorption light path; the invention reduces the pollution possibility of the optical component by avoiding the direct contact between the optical measurement component and the measured water body, reduces the maintenance workload and improves the stability and the accuracy of water quality monitoring.

Description

Non-contact UV absorbs light path device

Technical Field

The invention relates to a non-contact UV absorption optical path device, and belongs to the field of online water quality monitoring.

Background

With the development of socioeconomic and technological progress, water quality detection methods are also continuously developed and perfected. Compared with the traditional chemical water quality detection method, the optical water quality detection method has the advantages of no need of manual intervention, high detection speed, no secondary pollution and the like, so that the method is widely applied to online water quality monitoring of water resource environments such as rivers, lakes, reservoirs and the like, wherein UV absorption spectrum analysis is one of the mainstream methods of optical water quality detection.

The UV absorption light path device is an important component of an optical water quality detection method based on UV absorption spectrum analysis. The UV absorption spectrum analysis has high requirement on the quality of an optical path, however, in the structural design of the optical path device generally adopted at present, an optical measurement component needs to be soaked or contacted with a measured water body for a long time, water body pollutants and impurities in water are easily attached to the surface of the optical measurement component, the accuracy and the stability of a measurement result are influenced, and great challenge is brought to the maintenance of an optical instrument. Reducing direct contact with the measured water is one of the simplest and most effective means for avoiding contamination of the optical measurement module, and therefore, it is also an important research direction.

Disclosure of Invention

The invention discloses a non-contact UV absorption optical path device, and belongs to the field of online water quality monitoring. The invention aims to provide a UV absorption light path device, which avoids direct contact between an optical measurement component and a measured water body, thereby reducing the possibility of pollution of the optical component, reducing the maintenance workload and improving the stability and the accuracy of water quality monitoring.

The non-contact UV absorption light path device comprises a measuring box, a water sample supply assembly and an optical probe assembly. The measuring box is used as an optical measuring place and provides a stable environment for light path generation and water sample supply; the water sample supply assembly is arranged at the top of the measuring box and is used for introducing a measured water sample and forming a stable water column in the measuring box; the optical probe components are arranged on two opposite side walls of the measuring box and used for generating UV light paths which are vertically intersected with the water sample column, so that a non-contact UV absorption light path is formed.

Preferably, the measuring box is of a closed cuboid structure, is made of an aluminum alloy material, and is coated with a polytetrafluoroethylene high-temperature sintering layer on the surface.

Preferably, the water sample supply assembly comprises a sampling pipe joint and a water sample spray head. The sampling pipe joint is positioned on the outer side of the measuring box and is connected with external water sampling equipment through a sampling pipe; the water sample spray head is fixed in the measuring box for measuring, and the water sample is uniformly sprayed out after being pressurized and rectified to form a stable water column in the measuring box.

Preferably, the optical probe assembly comprises a probe base, a coaxial collimating convex lens and an optical fiber connector; the probe base is in a U-shaped configuration and is fixed on the side wall of the measuring box; the two coaxial collimating convex mirrors are respectively arranged at the inner sides of the two U-shaped arms of the probe base and are used for maintaining the collimation of the light path; the optical fiber connectors are two in number, are respectively installed on the outer sides of the two U-shaped arms of the probe base and are used for being connected with other external optical devices.

Drawings

FIG. 1 is a front cross-sectional view of a first embodiment of the present invention;

fig. 2 is a side view of a first embodiment of the present invention.

Detailed Description

The following describes in further detail embodiments of the present invention.

As shown in fig. 1-2, the invention is a non-contact UV absorption optical path device, which is composed of a measuring box 1, a water sample spray head 2, a sampling pipe joint 3, an optical fiber joint 4, a coaxial collimating convex lens 5 and a probe base 6.

The water sample sprayer 2 penetrates through and is fixed at the top of the measuring box 1, the end of the nozzle 7 is positioned in the measuring box 1 for measuring, and the other end of the nozzle is positioned outside the measuring box 1 and is connected with the sampling pipe joint 3.

The probe base 6 is fixed on the side wall of the measuring box 1, one end of the probe base located in the measuring box 1 is connected with the coaxial collimating convex lens 5, and one end of the probe base located outside the measuring box 1 is connected with the optical fiber connector 4; the optical fiber connector 4 is connected with other external optical devices.

When the device operates, a constant-pressure measured water sample is obtained through the sampling pipe joint 3, is uniformly sprayed out through the nozzle 7 after being rectified by the spray head, and flows out of the drainage interface 8 to form a stable water column in the measuring box 1; emitted light enters the measuring box through the optical fiber connector 4 and the coaxial collimating convex lens 5 of the optical probe assembly after being emitted by the external optical device, perpendicularly intersects with the water column, is emitted through the opposite coaxial collimating convex lens 5 and the optical fiber connector 4, and then is transmitted into other external optical devices, so that a non-contact UV absorption light path is formed.

The above examples are only one embodiment of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Such as: simple changes in the measurement box structure; the shape of the water sample spray head; the geometry of the nozzle; the distance between the two sets of optical probe assemblies, etc. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A non-contact UV absorbs light path device, includes measuring box, water sample supply assembly and optical probe subassembly, its characterized in that: the measuring box is used as an optical measuring place and provides a stable environment for light path generation and water sample supply; the water sample supply assembly is arranged at the top of the measuring box and is used for introducing a measured water sample and forming a stable water column in the measuring box; the optical probe components are arranged on two opposite side walls of the measuring box and used for generating UV light paths, and the UV light paths are vertically intersected with the water sample column to form non-contact UV absorption light paths.

2. A non-contact UV absorbing optical circuit device according to claim 1, wherein: the measuring box is of a closed cuboid structure, is made of aluminum alloy materials, and is coated with a polytetrafluoroethylene high-temperature sintering layer on the surface.

3. A non-contact UV absorbing optical circuit device according to claim 1, wherein: the water sample supply assembly comprises a sampling pipe joint and a water sample sprayer; the sampling pipe joint is positioned on the outer side of the measuring box and is connected with external water sampling equipment through a sampling pipe; the water sample spray head is fixed in the measuring box for measuring, and the water sample is uniformly sprayed out after being pressurized and rectified to form a stable water column in the measuring box.

4. A non-contact UV absorbing optical circuit device according to claim 1, wherein: the optical probe assembly comprises a probe base, a coaxial collimating convex lens and an optical fiber connector; the probe base is in a U-shaped configuration and is fixed on the side wall of the measuring box; the two coaxial collimating convex mirrors are respectively arranged at the inner sides of the two U-shaped arms of the probe base and are used for maintaining the collimation of the light path; the optical fiber connectors are two in number, are respectively installed on the outer sides of the two U-shaped arms of the probe base and are used for being connected with other optical devices.