Ozone detection cavity using reflection method ultraviolet spectroscopic absorption technology

Abstract

The utility model provides an ozone detection cavity using a reflection method ultraviolet spectroscopic absorption technology, which belongs to the technical field of ozone detection and comprises a sample inlet, a sample outlet, a detection chamber, a lamp chamber and a reflection cavity, the lamp chamber is arranged on one side of the detection chamber, and the reflection cavity is arranged on the other side of the detection chamber. The detection chamber is used for providing a light source, the sample inlet and the sample outlet are formed in the detection chamber, the sample inlet is used for adding an ozone sample into the ozone detection cavity, the detection chamber is used for guiding out the detected ozone sample, and the detection chamber is used for detecting the ozone sample; the utility model provides an ozone detection cavity using a reflection method ultraviolet spectroscopic absorption technology, which can solve the problems of zero point change and test concentration drift caused by coating attenuation of a light path structure of an existing ozone concentration detector and inconsistent symmetrical light intensity caused by too fast light attenuation of an ultraviolet lamp.

Description

Technical Field

[0001] The utility model belongs to the technical field of ozone detection, and specifically relates to an ozone detection cavity using a reflection method ultraviolet spectroscopic absorption technology. Background Art

[0002] Ozone has strong oxidizing properties and will decompose into oxygen after disinfection and sterilization. It will not cause secondary pollution to the environment. It has been widely used in many fields such as water treatment, chemical oxidation, pulp bleaching, medical treatment, and food. The ozone concentration detector made based on the principle of ultraviolet absorption is widely used in related industries at home and abroad because of its advantages such as non-toxicity, non-corrosiveness, fast response speed and continuous online detection.

[0003] At present, there are two main types of optical path structures of concentration detectors on the market. The first type is the optical path transflective structure, which is divided into transmitted light and reflected light. Although this method can achieve the purpose of detecting ozone concentration, with the attenuation of the coating on the surface of the transflective lens, the ratio of transmitted light and reflected light will change, causing zero point drift and affecting the detection accuracy. At the same time, with the attenuation of ultraviolet light, the attenuation of transmitted light and reflected light is much higher than other optical path structures; the other is a symmetrical structure. The biggest disadvantage of this structure is that it cannot guarantee the consistency of the symmetrical light intensity. With the attenuation of the ultraviolet light, the light intensity ratio of the symmetrical light will change, causing zero point drift. Utility Model Content

[0004] In view of this, the utility model provides an ozone detection cavity using reflection method ultraviolet spectroscopic absorption technology, which can solve the problems of zero point change and test concentration drift caused by coating attenuation in the optical path structure of the existing ozone concentration detector, as well as inconsistent symmetrical light intensity caused by too fast attenuation of ultraviolet light.

[0005] The utility model is achieved in this way:

[0006] The utility model provides an ozone detection cavity using a reflection method ultraviolet spectroscopic absorption technology, wherein the cavity comprises a sample inlet, a sample outlet, a detection chamber, a lamp chamber and a reflection cavity, wherein the lamp chamber is arranged at one side of the detection chamber, the detection chamber is used to provide a light source, the detection chamber is provided with the sample inlet and the sample outlet inside, the sample inlet is used to add an ozone sample into the ozone detection cavity, the detection chamber is used to guide the detected ozone sample out, and the detection chamber is used to detect the ozone sample; the reflection cavity is arranged at the top of the sample inlet and the sample outlet, and the reflection cavity is used to reflect the light emitted by the lamp chamber into the detection chamber to detect the ozone sample.

[0007] The technical effects of an ozone detection cavity using a reflection method ultraviolet spectroscopic absorption technology provided by the utility model are as follows: by setting the sample inlet, an ozone sample is added into the detection chamber; by setting the sample outlet, the ozone sample introduced by the sample inlet is exported; by setting the detection chamber, the concentration of the ozone sample is detected; by setting the lamp chamber, an ultraviolet light source is provided; and by setting the reflection cavity, the ultraviolet light source is reflected.

[0008] On the basis of the above technical solution, the ozone detection cavity using the reflection method ultraviolet spectroscopic absorption technology of the utility model can also be improved as follows:

[0009] Wherein, the reflecting cavity includes a first reflector, a light guide hole and a second reflector, the first reflector is arranged at the top of the lamp house, the second reflector is arranged at the top of the detection chamber, the first reflector and the second reflector are connected only through the light guide hole, the first reflector is used to emit the light emitted by the lamp house into the detection chamber through the light guide hole, and the second reflector is used to reflect the light reflected by the first reflector to between the sample inlet and the sample outlet to detect the ozone sample.

[0010] Furthermore, a sampling chamber and a reference chamber are provided inside the detection chamber. The sampling chamber is provided between the sample inlet and the sample outlet for detecting the ozone sample introduced into the sample inlet. The reference chamber is provided at one side of the sampling chamber for serving as a control group.

[0011] Furthermore, a light guide and a stainless steel gasket are provided in the middle section of the sampling cavity. The light guide includes two light guides which are respectively fixed on both sides of the stainless steel gasket. The light guide is used for guiding light, and the stainless steel gasket is used for ensuring the uniform thickness of the absorption layer inside the sampling cavity.

[0012] Furthermore, a spring is provided at the bottom of the sampling cavity, and the spring is used to fix the light guide plate.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the stainless steel gasket has a good mechanical structure to ensure that the thickness of the absorption layer remains consistent, and the light guide is fixed with a spring to make the light guide firm and reliable.

[0014] Furthermore, a sealing ring is provided on one side of the two light guide plates away from the stainless steel gasket.

[0015] Furthermore, the detection chamber, the lamp chamber and the reflection chamber are all fixed by glue.

[0016] Furthermore, the first reflector and the light guide hole are made of quartz material to reduce the loss of light intensity emitted by the first reflector and the light guide hole.

[0017] The beneficial effect of adopting the above-mentioned improvement scheme is that the first reflector and the second reflector are made of quartz material, which has good ultraviolet light conductivity and reduces light intensity loss.

[0018] Furthermore, two ultraviolet lamps are arranged in the lamp chamber, and the two ultraviolet lamps are in the same direction and are used to emit parallel light on the same side to ensure that the intensity ratio of the two paths of light emitted by the two ultraviolet lamps is consistent.

[0019] The beneficial effect of adopting the above-mentioned improvement scheme is that the light source in the lamp chamber can emit parallel light on the same side, ensuring that the ratio of the light intensity of the two paths is consistent and improving the stability of the zero point.

[0020] Furthermore, a fixing plate is provided at the bottom of the detection chamber.

[0021] Compared with the prior art, the beneficial effects of the ozone detection cavity using the reflection method ultraviolet spectroscopic absorption technology provided by the utility model are:

[0022] (1) The detection cavity is configured as a reflective cavity structure, and the light source in the lamp chamber can emit parallel light on the same side, ensuring that the ratio of the light intensities of the two paths is consistent, thereby improving the stability of the zero point.

[0023] (2) The interior of the reflective cavity is a sealed, light-free structure, which can minimize light intensity loss. At the same time, the first reflector and the second reflector are made of quartz material, which has good ultraviolet light conductivity and also reduces light intensity loss.

[0024] (3) The stainless steel gasket has a good mechanical structure to ensure that the thickness of the absorption layer remains consistent. The light guide is fixed with a spring to make the light guide firm and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the structure of an ozone detection cavity using the reflection method ultraviolet spectroscopic absorption technology;

[0027] Figure 2 It is a schematic diagram of the structure of the middle section of the sampling chamber;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 10. Sample inlet; 20. Sample outlet; 30. Detection chamber; 31. Sampling chamber; 311. Light guide plate; 312. Stainless steel gasket; 313. Spring; 314. Sealing ring; 32. Reference chamber; 40. Lamp chamber; 50. Reflection chamber; 51. First reflector; 52. Light guide hole; 53. Second reflector; 60. Fixing plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0031] like Figure 1-2 As shown, it is a structural schematic diagram of an ozone detection cavity using reflection method ultraviolet spectroscopic absorption technology provided by the utility model. In the figure, it includes a sample inlet 10, a sample outlet 20, a detection chamber 30, a lamp chamber 40 and a reflection cavity 50. The lamp chamber 40 is arranged on one side of the detection chamber 30. The detection chamber 30 is used to provide a light source. The detection chamber 30 is provided with a sample inlet 10 and a sample outlet 20 inside. The sample inlet 10 is used to add an ozone sample into the ozone detection cavity. The detection chamber 30 is used to export the detected ozone sample. The detection chamber 30 is used to detect the ozone sample; a reflection cavity 50 is arranged on the top of the sample inlet 10 and the sample outlet 20. The reflection cavity 50 is used to reflect the light emitted by the lamp chamber 40 into the detection chamber 30 to detect the ozone sample.

[0032] In the above technical solution, the reflection cavity 50 includes a first reflector 51, a light guide hole 52 and a second reflector 53. The first reflector 51 is arranged at the top of the lamp chamber 40, and the second reflector 53 is arranged at the top of the detection chamber 30. The first reflector 51 and the second reflector 53 are connected only by the light guide hole 52. The first reflector 51 is used to transmit the light emitted by the lamp chamber 40 into the detection chamber 30 through the light guide hole 52, and the second reflector 53 is used to reflect the light reflected by the first reflector 51 to between the sample inlet 10 and the sample outlet 20 to detect the ozone sample.

[0033] Furthermore, in the above technical solution, a sampling chamber 31 and a reference chamber 32 are provided inside the detection chamber 30. The sampling chamber 31 is provided between the sample inlet 10 and the sample outlet 20 for detecting the ozone sample introduced by the sample inlet 10. The reference chamber 32 is provided on one side of the sampling chamber 31 for serving as a control group.

[0034] Furthermore, in the above technical solution, a light guide plate 311 and a stainless steel gasket 312 are provided in the middle section of the sampling cavity 31. The light guide plate 311 includes two light guide plates 311, which are respectively fixed on both sides of the stainless steel gasket 312. The light guide plate 311 is used for guiding light, and the stainless steel gasket 312 is used to ensure that the thickness of the absorption layer inside the sampling cavity 31 is consistent.

[0035] Furthermore, in the above technical solution, a spring 313 is provided at the bottom of the sampling cavity 31 , and the spring 313 is used to fix the light guide plate 311 .

[0036] Furthermore, in the above technical solution, a sealing ring 314 is provided on one side of the two light guide plates 311 away from the stainless steel gasket 312 .

[0037] Furthermore, in the above technical solution, the detection chamber 30, the lamp chamber 40 and the reflection chamber 50 are all fixed by glue.

[0038] Furthermore, in the above technical solution, the first reflector 51 and the light guide hole 52 are made of quartz material to reduce the intensity loss of light emitted by the first reflector 51 and the light guide hole 52 .

[0039] Furthermore, in the above technical solution, two ultraviolet lamps are arranged in the lamp chamber 40, and the two ultraviolet lamps have the same direction and are used to emit parallel light on the same side to ensure that the intensity ratio of the two paths of light emitted by the two ultraviolet lamps is consistent.

[0040] Furthermore, in the above technical solution, a fixing plate 60 is provided at the bottom of the detection chamber 30 .

[0041] When in use, the two ultraviolet lamps in the lamp house 40 emit parallel light, which is reflected by the first reflector 51 and passes through the light guide hole 52 to reach the second reflector 53. One beam of light passes through the reference cavity 32, and the other beam of light passes through the sampling cavity 31 and enters the ozone sample through the sample inlet 10. The light guide plate 311 guides the light in the sampling cavity 31 and absorbs the ozone sample. The concentration of the ozone sample is detected by the intensity of the light derived from the sampling cavity 31 and the reference cavity 32.

[0042] Specifically, the principle of the utility model is: the two ultraviolet lamps in the lamp house 40 emit parallel light, which is reflected by the first reflector 51 and passes through the light guide hole 52 to reach the second reflector 53, one beam of light passes through the reference cavity 32, and the other beam of light passes through the sampling cavity 31, and enters the ozone sample through the sample inlet 10. The light guide plate 311 guides the light in the sampling cavity 31 and absorbs the ozone sample. The concentration of the ozone sample is detected by the intensity of the light derived from the sampling cavity 31 and the reference cavity 32.

Claims

1. An ozone detection chamber using reflection method ultraviolet spectroscopic absorption technology, characterized in that: The invention comprises a sample inlet (10), a sample outlet (20), a detection chamber (30), a lamp chamber (40) and a reflection chamber (50), wherein the lamp chamber (40) is arranged on one side of the detection chamber (30), the detection chamber (30) is used to provide a light source, the detection chamber (30) is provided with the sample inlet (10) and the sample outlet (20) inside, the sample inlet (10) is used to add an ozone sample into the ozone detection chamber, the detection chamber (30) is used to guide the detected ozone sample out, and the detection chamber (30) is used to detect the ozone sample; the reflection chamber (50) is arranged on the top of the sample inlet (10) and the sample outlet (20), and the reflection chamber (50) is used to reflect the light emitted by the lamp chamber (40) into the detection chamber (30) to detect the ozone sample.

2. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 1 is characterized in that: The reflection cavity (50) comprises a first reflector (51), a light guide hole (52) and a second reflector (53); the first reflector (51) is arranged at the top of the lamp house (40); the second reflector (53) is arranged at the top of the detection chamber (30); the first reflector (51) and the second reflector (53) are connected only through the light guide hole (52); the first reflector (51) is used to transmit the light emitted by the lamp house (40) into the detection chamber (30) through the light guide hole (52); the second reflector (53) is used to reflect the light reflected by the first reflector (51) to between the sample inlet (10) and the sample outlet (20) so as to detect the ozone sample.

3. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 2 is characterized in that: The detection chamber (30) is provided with a sampling chamber (31) and a reference chamber (32) therein; the sampling chamber (31) is provided between the sample inlet (10) and the sample outlet (20) and is used for detecting the ozone sample introduced through the sample inlet (10); the reference chamber (32) is provided on one side of the sampling chamber (31) and is used as a control group.

4. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 3 is characterized in that: A light guide sheet (311) and a stainless steel gasket (312) are provided in the middle section of the sampling cavity (31); the light guide sheets (311) include two, which are respectively fixed on two sides of the stainless steel gasket (312); the light guide sheet (311) is used for guiding light, and the stainless steel gasket (312) is used for ensuring that the thickness of the absorption layer inside the sampling cavity (31) is consistent.

5. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 4 is characterized in that: A spring (313) is provided at the bottom of the sampling cavity (31), and the spring (313) is used to fix the light guide plate (311).

6. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 5 is characterized in that: A sealing ring (314) is provided on one side of the two light guide plates (311) away from the stainless steel gasket (312).

7. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 6 is characterized in that: The detection chamber (30), the lamp chamber (40) and the reflection chamber (50) are all fixed by glue.

8. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 7 is characterized in that: The first reflector (51) and the light guide hole (52) are made of quartz material, and are used to reduce the intensity loss of light emitted by the first reflector (51) and the light guide hole (52).

9. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 8, characterized in that: Two ultraviolet lamps are arranged in the lamp room (40), and the two ultraviolet lamps are arranged in the same direction and are used to emit parallel light on the same side to ensure that the intensity ratio of the two paths of light emitted by the two ultraviolet lamps is consistent.

10. The ozone detection chamber using the reflection method ultraviolet spectroscopic absorption technology according to claim 9, characterized in that: A fixing plate (60) is provided at the bottom of the detection chamber (30).

Images