Circulation type ultraviolet optical space ozone concentration analyzer

Abstract

The utility model provides a circulation type ultraviolet optical space ozone concentration analyzer which comprises an air inlet filter screen, an ultraviolet lamp tube, an ultraviolet light filter, an oblique light sheet, a reference light photoelectric receiver, an ozone detection chamber, a sampling light photoelectric receiver, a miniature fan, an ozone zero calibration catalyst and a zero calibration air pump, the filter screen is connected with the ozone detection chamber, the ozone zero calibration catalyst is connected with the zero calibration air pump, and the zero calibration air pump is connected with the ozone detection chamber. According to the ozone concentration analyzer, the function of detecting the ozone concentration in real time is realized by utilizing the ultraviolet optical principle, and the zero point can be corrected at any time in real time in the detection process, so that the continuous operation of the ozone concentration analyzer can be realized, and the zero point automatic correction time of the ozone concentration analyzer can be set according to the actual application condition on site.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flow type ultraviolet optical space ozone concentration analyzer and belongs to the technical field of ozone detection. BACKGROUND

[0002] Ozone is a strong oxidant and has strong bactericidal disinfection, bleaching, odor removal and other characteristics, and is thus widely applied to products in aspects of water disinfection, food processing sterilization and purification, food storage and preservation, medical health and household disinfection and purification. In the production and application of ozone generators, certain ozone concentration is an important parameter for ensuring disinfection and oxidation effect, saving energy and preventing pollution, and ozone application engineering and equipment need to monitor ozone concentration. The ozone generation capacity of an ozone generator is greatly affected by the humidity of a gas source, the temperature of cooling water and the aging of a discharge surface, so the ozone concentration needs to be detected frequently. For large ozone equipment, a high-concentration ozone gas detector is installed in process control, and there are a detector for detecting dissolved ozone in mixed water and a detector for detecting the ozone concentration in exhaust gas, so as to control the entire system to be in an optimal working state.

[0003] However, in actual application, the ozone gas detector based on the electrochemical principle has a relatively low cost, but the maintenance cost is relatively high in the later use process. The service life of the sensor is 12-18 months, and the sensor needs to be replaced in time when the service life expires. In actual application, the sensor based on the electrochemical principle will decay with the use time, causing deviation of detection accuracy and data linearity. If multiple sensors based on the electrochemical principle are installed in each room, the maintenance and replacement cost will be high in the later period. According to the requirement of the ultraviolet photometry method for measuring ozone in the environment air, the ozone concentration analyzer based on the ultraviolet optical absorption principle needs to be used for detecting and analyzing the ozone concentration in space. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a flow type ultraviolet optical space ozone concentration analyzer to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme: a flow type ultraviolet optical space ozone concentration analyzer, comprising an air inlet filter screen, an inclined light sheet, an ultraviolet filter, an ultraviolet lamp tube, a reference light photoelectric receiver, an ozone detection chamber, an ozone zero-calibration catalyst, a zero-calibration air pump, a filter, a sampling light photoelectric receiver and a micro fan, wherein the micro fan is connected with the air inlet filter screen and the ozone detection chamber, the ozone zero-calibration catalyst is connected with the filter, the filter is connected with the zero-calibration air pump, and the zero-calibration air pump is connected with the ozone detection chamber.

[0006] Further, the ozone detection chamber is provided with sealed quartz sheets at both ends, and an air inlet filter screen is installed at one end for air inlet, and a micro fan is installed at the other end for air outlet, so that the ozone gas in the space forms a circulating gas in the ozone detection chamber.

[0007] Further, a reference light photoelectric receiver is installed in the vertical direction of the ultraviolet light reflected by the inclined light sheet, and a sampling light photoelectric receiver is installed at one end of the ozone detection chamber in the straight direction away from the ultraviolet lamp tube.

[0008] Further, the ultraviolet filter is a 253.7nm ultraviolet filter.

[0009] The ozone concentration analyzer of the utility model has the advantages that when the ozone concentration analyzer is in a detection state, ozone gas enters the ozone detection chamber through the ozone inlet filter screen in a circulating manner through the micro fan at the end of the ozone detector, and the ultraviolet light passes through the ozone detection chamber to calculate the concentration of ozone according to the current or voltage signals of the reference light photoelectric receiver and the sampling light photoelectric receiver according to the Lambert Beer law. The micro fan can adjust its speed in real time according to the size of the ozone concentration to increase the ozone inlet circulation and make the ozone concentration value more rapid and sensitive. When the ozone concentration analyzer is in a zero calibration state, the ozone zero calibration catalyst is connected with the filter, the filter is connected with the zero calibration air pump, and the zero calibration air pump is connected with the ozone detection chamber, so that the zero calibration air pump can provide ozone-free gas (zero gas) to purge and calibrate the zero point of the ozone detection chamber in time. At this time, the micro fan can reduce the speed to make the zero gas fully fill the detection chamber to achieve the purpose of fully calibrating the zero point. The zero calibration process can be performed in real time during the detection process without stopping and restarting. After the zero calibration is completed, the micro fan returns to the normal speed to make the ozone gas enter the ozone detection chamber rapidly to meet the requirements of 24-hour online continuous operation of the ozone concentration analyzer. BRIEF DESCRIPTION OF DRAWINGS

[0010] Other features, objects and advantages of the utility model will become more apparent through reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0011] Figure 1 The utility model discloses a kind of circulating ultraviolet optical space ozone concentration analyzers connection process diagram;

[0012] In the drawing: 1-filter screen, 2-inclined light sheet, 3-ultraviolet filter, 4-ultraviolet lamp tube, 5-reference light photoelectric receiver, 6-ozone detection chamber, 7-ozone zero calibration catalyst, 8-zero calibration air pump, 9-filter, 10-sampling light photoelectric receiver, 11-micro fan. DETAILED DESCRIPTION

[0013] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0014] Please refer to Figure 1 The specific embodiment provides a technical scheme: a circulating ultraviolet optical space ozone concentration analyzer comprises an air inlet filter screen 1, an ultraviolet lamp tube 4, an ultraviolet filter 3, an inclined light sheet 2, a reference light photoelectric receiver 5, an ozone detection chamber 6, a sampling light photoelectric receiver 10, a micro fan 11, an ozone zero calibration catalyst 7, a filter 9, a zero calibration air pump 8, the micro fan 11 is connected with the ozone detection chamber 6, the air inlet filter screen 1 is connected with the ozone detection chamber 6, the ozone zero calibration catalyst 7 is connected with the filter 9, the filter 9 is connected with the zero calibration air pump 8, the zero calibration air pump 8 is connected with the ozone detection chamber 6, sealed quartz sheets are installed at both ends of the ozone detection chamber 6, the air inlet filter screen 1 is installed at one end of the ozone detection chamber 6 for an air inlet, the micro fan 11 is installed at the other end for an air outlet, so that the ozone gas in the space forms a circulating gas in the ozone detection chamber 6, when the ozone concentration analyzer is calibrated, the zero calibration air pump 8 is started to blow the gas without ozone into the ozone detection chamber 6 to complete the automatic zero calibration operation, the filter is a 253.7nm ultraviolet filter, if the ultraviolet filter is already installed in the ultraviolet lamp tube, the ultraviolet filter 3 can not be additionally installed.

[0015] As an embodiment of the utility model: when the ozone concentration analyzer is in a detection state: the ozone gas enters the ozone detection chamber 6 through the ozone inlet filter 9 in a circulating manner through the micro fan 11 at the end of the ozone detector, the ultraviolet light passes through the ozone detection chamber 6, according to the current or voltage signals of the reference light photoelectric receiver 5 and the sampling light photoelectric receiver 10, the concentration of the ozone is calculated according to the Lambert Beer law, the micro fan 11 can adjust the rotating speed in real time according to the size of the ozone concentration, so as to increase the ozone inlet circulation, make the ozone concentration value more rapid and sensitive, when the ozone concentration analyzer is in a zero calibration state: the ozone zero calibration catalyst 7 is connected with the filter 9, the filter 9 is connected with the zero calibration air pump 8, the zero calibration air pump 8 is connected with the ozone detection chamber 6, the zero calibration air pump 8 provides the gas without ozone (zero gas) to the ozone detection chamber 6 in time for zero point purging and calibration, at this time, the micro fan 11 reduces the rotating speed, so that the zero gas fully fills the detection chamber, so as to achieve the purpose of fully correcting zero, the zero calibration process can be carried out in real time in the detection process, without stopping and restarting, after the zero calibration is completed, the micro fan 11 returns to the normal rotating speed, so that the ozone gas rapidly enters the ozone detection chamber 6, so as to meet the 24-hour online continuous operation of the ozone concentration analyzer.

[0016] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0017] In addition, it should be understood that, although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A flow-through ultraviolet optical space ozone concentration analyzer, comprising an air inlet filter (1), an oblique light sheet (2), an ultraviolet filter (3), an ultraviolet lamp (4), a reference light photoelectric receiver (5), an ozone detection chamber (6), an ozone zeroing catalyst (7), a zeroing air pump (8), a filter (9), a sampling light photoelectric receiver (10) and a micro fan (11), characterized in that: The micro fan (11) is connected with the air inlet filter screen (1) and the ozone detection chamber (6), the ozone zero calibration catalyst (7) is connected with the filter (9), the filter (9) is connected with the zero calibration air pump (8), and the zero calibration air pump (8) is connected with the ozone detection chamber (6).

2. The flow-through ultraviolet optical ozone concentration analyzer according to claim 1, characterized in that: Sealed quartz sheets are installed at two ends of the ozone detection chamber (6), an air inlet filter screen (1) is installed at one end for an air inlet, a micro fan (11) is installed at the other end for an air outlet, and ozone gas in the space forms a circulating gas in the ozone detection chamber (6).

3. The flow-through ultraviolet optical ozone concentration analyzer according to claim 1, characterized in that: A reference light photoelectric receiver (5) is installed in the vertical direction of the ultraviolet light reflected by the inclined light sheet (2), and a sampling light photoelectric receiver (10) is installed at one end of the ozone detection chamber (6) in the direction away from the straight line direction of the ultraviolet lamp (4).

4. The flow-through ultraviolet optical ozone concentration analyzer according to claim 1, characterized in that: The ultraviolet filter (3) is a 253.7nm ultraviolet filter.

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