Multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection

Abstract

The invention discloses a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection, which comprises a multi-channel ultraviolet optical ozone concentration analyzer main body, a multi-channel flowmeter, a multi-channel sampling tube, a multi-channel tee joint, a multi-channel ozone tail gas destructor and a negative pressure suction air pump, the ozone disinfection room or the air return pipeline is sampled and analyzed in a multi-channel pipeline connection mode, the ozone concentration analyzer has the function of automatically correcting the zero point, zero point deviation is avoided, the problems that an electrochemical principle ozone detector is short in service life, poor in linearity and poor in precision are solved, and the ultraviolet optical ozone concentration analyzer has the advantages of being long in service life, high in accuracy and the like. The change of the ozone concentration can be monitored in real time, so that the purpose of accurately controlling the ozone yield to be added into the disinfection space is achieved.

Description

Technical Field

[0001] The invention relates to a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection, belonging to the technical field of ultraviolet optical ozone concentration analysis. Background Art

[0002] Ozone is a strong oxidant that can quickly kill bacteria in the air at a certain concentration. It is much stronger than chemical disinfectants, and its sterilization time is extremely fast, 300-600 times that of chlorine and 3000 times that of ultraviolet rays. Ozone has a significant inactivation effect on almost all bacteria, viruses, molds, fungi, protozoa, and oocysts, and is a broad-spectrum disinfectant. Ozone has good diffusion, no toxic residues, and will not form secondary pollution. Its chemical properties are particularly active, and it is known as the "cleanest oxidant and disinfectant." The effect of ozone in killing bacteria and viruses is usually a comprehensive effect of physical, chemical, and biological aspects, and its mechanism of action can be summarized as follows:

[0003] It acts on the cell membrane, causing the permeability of the cell membrane to increase, penetrates the cell membrane tissue, invades the cell, acts on the lipoproteins in the outer membrane and the lipopolysaccharide inside, causing the bacteria to undergo permeability distortion and dissolve and die.

[0004] Enzymes are necessary for decomposing cell activities. Bacteria need enzymes for glucose, and enzymes are important components of synthetic cells. They directly interact with bacteria and viruses, destroying their organelles, DNA, and RNA, causing bacterial metabolism to be damaged and leading to bacterial death. This process is also extremely rapid. Ozone disinfection does not cause secondary pollution and is currently the greenest disinfectant.

[0005] The process of ozone sterilization is to release the third oxygen atom to destroy the cell wall, cell membrane and protein shell of the virus, directly destroy RNA and DNA, and make them oxidatively decompose. The reaction of sensitive amino acid residues (cysteine ​​residues, tryptophan residues, methionine residues) can directly destroy the protein. Now a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection is urgently needed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection to solve the problems raised in the above-mentioned technical applications.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection, which comprises: a multi-channel ultraviolet optical ozone concentration analyzer body, a multi-channel flow meter, a multi-channel sampling tube, a multi-channel tee, a multi-channel ozone tail gas destroyer and a negative pressure suction air pump, wherein the multi-channel ultraviolet optical ozone concentration analyzer body comprises: a multi-channel air inlet of the ozone concentration analyzer, a multi-channel two-way solenoid valve, a three-way connector, a three-way solenoid valve, an ozone zeroing catalyst, an ozone concentration sensor, an ozone tail gas destroyer, a gas filter, a pressure sensor, a negative pressure suction air pump, a flow meter and an air outlet of the ozone concentration analyzer;

[0008] The ozone concentration sensor comprises an ultraviolet lamp, an ultraviolet filter, a refracting plate, a reference light photoelectric receiver, a detection gas chamber, a temperature sensor and a sampling light photoelectric receiver;

[0009] The multi-channel air inlet of the ozone concentration analyzer is connected to the multi-channel two-way solenoid valve, the multi-channel two-way solenoid valve is connected to the three-way connector, one end of the three-way connector is connected to the ozone zeroing catalyst and the other end is connected to the NC end of the anti-corrosion three-way solenoid valve, the COM end of the anti-corrosion three-way solenoid valve is connected to the air inlet of the ozone concentration sensor, the air outlet of the ozone concentration sensor is connected to the ozone tail gas destructor, the ozone tail gas destructor is connected to the gas filter, the gas filter is connected to the pressure sensor, the pressure sensor is connected to the flow meter, the flow meter is connected to the negative pressure suction air pump, and the negative pressure suction air pump is connected to the air outlet of the ozone concentration analyzer.

[0010] Furthermore, a multi-channel tee is installed in front of the multi-channel flowmeter, and the tee is connected to the main body of the multi-channel ultraviolet optical ozone concentration analyzer. After the main body of the multi-channel ultraviolet optical ozone concentration analyzer is first calibrated to a zero point, the ozone gas in each room is sampled in the flow in sequence to detect and analyze the ozone concentration.

[0011] Furthermore, the multi-channel two-way solenoid valve should adopt a normally closed two-way solenoid valve, and the anti-corrosion three-way solenoid valve should adopt a normally closed anti-corrosion three-way solenoid valve.

[0012] Furthermore, the ultraviolet lamp in the ozone concentration sensor adopts a narrow-band ultraviolet lamp with a wavelength of 253.7 nm.

[0013] Beneficial effects of the present invention: The entire process and technology is in a negative pressure state, and the ozone concentration data is compensated according to the negative pressure data of the pressure sensor. A temperature sensor should be built into the air chamber of the ozone concentration sensor to detect the ozone gas temperature in the air chamber of the ozone concentration sensor in real time and compensate the calculated ozone concentration data. The negative pressure suction air pump adopts the selection of brushless motor, and the speed and negative pressure flow can be adjusted to control the negative pressure sampling flow at 0.5±0.2L / min, so as to achieve a more stable adjustment of the sampled ozone flow. Prevent gas turbulence and improve the accuracy of the detected ozone concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0015] Figure 1 This is a connection process diagram of a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection according to the present invention;

[0016] Figure 2 This is a structural diagram and a connection diagram of a multi-channel ultraviolet optical ozone concentration analyzer in a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection of the present invention;

[0017] Figure 3 This is a structural diagram and connection diagram of an internal ozone concentration sensor in a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection of the present invention;

[0018] In the figure: 1- multi-channel ultraviolet optical ozone concentration analyzer body, 2- multi-channel ozone tail gas destroyer, 3- multi-channel negative pressure suction air pump, 4- multi-channel air inlet, 5- multi-channel two-way solenoid valve, 6- three-way connector, 7- three-way solenoid valve, 8- ozone zeroing catalyst, 9- ozone concentration sensor, 10- ozone tail gas destroyer, 11- gas filter, 12- pressure sensor, 13- flow meter, 14- negative pressure suction air pump, 15- air outlet, 9-1- ultraviolet lamp, 9-2- ultraviolet filter, 9-3- refraction plate, 9-4- reference light photoelectric receiver, 9-5- detection gas chamber, 9-6- temperature sensor, 9-7- sampling light photoelectric receiver. DETAILED DESCRIPTION

[0019] The following will be combined with the attached embodiment of the present invention Figure 1 , Attachment Figure 2 and attached Figure 3, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection, through the suction action of the multi-channel negative pressure suction air pump 3, ozone gas can be sucked in real time from multiple ozone disinfection rooms (the attached figure is 1-6# rooms and is not limited to 6 rooms), the ozone gas passes through a multi-channel flow meter from multiple rooms (the gas flow rate is controlled at 0.5-0.8L / min, and the gas flow rate can also be increased according to the length of the pipeline), and then the ozone gas is reduced to ozone-free gas after passing through a multi-channel ozone tail gas destroyer 10, and then the gas is emptied to the outside through the multi-channel suction air pump 3, the multi-channel suction air pump 3 is always running in real time in order to use ozone gas to be continuously sucked from the ozone disinfection room, the multi-channel negative pressure suction air pump 3 should be selected according to the number of channels and the length of the pipelines of multiple rooms to select a suction air pump with a suitable flow rate to avoid the ozone gas supplied to the multi-channel ultraviolet optical ozone concentration analyzer. Lag or delay.

[0021] A multi-channel tee is installed in front of the multi-channel flowmeter, and the tee is connected to the multi-channel ultraviolet optical ozone concentration analyzer body 1. The multi-channel ultraviolet optical ozone concentration analyzer body 1 is first calibrated for zero point, and then the ozone gas in each room is sampled one by one in sequence from 1# onwards to detect and analyze the ozone concentration (the attached figure shows 1-6# air inlets and is not limited to 6 air inlets), and the flow rate of the ozone inlet 4 is controlled at 0.5±0.2L / min.

[0022] like Figure 2 As shown, the multi-channel ultraviolet optical ozone concentration analysis process structure of the multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection of the present invention is composed of: after starting up, the multi-channel two-way solenoid valves 5 need to be opened in sequence, and the pressure change data is used to determine whether the multi-channel two-way solenoid valves 5 are in a normal state. During operation, a zero point calibration operation is performed first, and a multi-channel two-way solenoid valve 5 is opened in sequence when calibrating the zero point.

[0023] The process flow of correcting the zero point is: the multi-channel air inlet 4 of the ozone concentration analyzer is connected to the multi-channel two-way solenoid valve 5, the multi-channel two-way solenoid valve 5 is connected to the three-way connector 6, one end of the three-way connector 6 is connected to the ozone zeroing catalyst 8 and the other end is connected to the anti-corrosion three-way solenoid valve (NC end), the COM end of the anti-corrosion three-way solenoid valve is connected to the air inlet of the ozone concentration sensor, the air outlet of the ozone concentration sensor 9 is connected to the ozone exhaust destructor, the ozone exhaust destructor 10 is connected to the gas filter 11, the gas filter 11 is connected to the pressure sensor 12, the pressure sensor 12 is connected to the flow meter 13, the flow meter 13 is connected to the negative pressure suction air pump 14, and the air outlet of the negative pressure suction air pump 14 is connected to the air outlet 15 of the ozone concentration analyzer.

[0024] When the ozone gas enters the ozone zeroing catalyst 8 after passing through the three-way connector 6, the gas coming out of the ozone zeroing catalyst 8 is no longer ozone-containing gas. At this time, the ozone-free gas enters the ozone concentration sensor 9 as zero gas to provide the ozone concentration sensor 9 with a zeroing operation. The ozone concentration detected by the ozone concentration analyzer is a low concentration of ozone at the PPM or PPB level, so the zero point calibration takes about 10 seconds to be purged. After completing one zeroing operation, each channel can be tested by opening the multi-channel two-way solenoid valve 5 in sequence, and circulating in sequence to ensure the accuracy of the ozone concentration.

[0025] The process flow of a multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection during normal concentration detection is: a multi-channel air inlet 4 of the ozone concentration analyzer is connected to a multi-channel two-way solenoid valve 5, the multi-channel two-way solenoid valve 5 is connected to a three-way connector 6, one end of the three-way connector 6 is connected to an ozone zeroing catalyst 8 and the other end is connected to an anti-corrosion three-way solenoid valve 7 (NC end), a COM end of the anti-corrosion three-way solenoid valve 7 is connected to an air inlet of an ozone concentration sensor 9, an air outlet of the ozone concentration sensor 9 is connected to an ozone tail gas destroyer 10, the ozone tail gas destroyer 10 is connected to a gas filter 11, the gas filter 11 is connected to a pressure sensor 12, the pressure sensor 12 is connected to a flow meter 13, the flow meter 13 is connected to a negative pressure suction air pump 14, and the negative pressure suction air pump 14 is connected to an air outlet 15 of the ozone concentration analyzer.

[0026] According to the concentration detection and zero point correction requirements of multi-channel ultraviolet optical ozone concentration analysis, the multi-channel two-way solenoid valve should adopt a normally closed two-way solenoid valve, which is opened when powered on. The anti-corrosion three-way solenoid valve can adopt a normally closed anti-corrosion three-way solenoid valve: the anti-corrosion three-way solenoid valve can realize the zero point correction operation when not powered on, and can detect the ozone concentration when powered on. A normally open anti-corrosion three-way solenoid valve 7 can also be used. The anti-corrosion three-way solenoid valve 7 can realize the detection operation when not powered on, and can perform the zero point correction operation of the ozone concentration when powered on.

[0027] A multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection requires a built-in gas pressure sensor 12 in the connection process. The entire process and process are in a negative pressure state. The ozone concentration data is compensated according to the negative pressure data of the pressure sensor 12. A temperature sensor should be built into the air chamber of the ozone concentration sensor 9 to detect the ozone gas temperature in the air chamber of the ozone concentration sensor 9 in real time and compensate the calculated ozone concentration data. The negative pressure suction air pump 14 adopts the selection of a brushless motor, and the speed and negative pressure flow can be adjusted to control the negative pressure sampling flow at 0.5±0.2L / min, so as to achieve a more stable adjustment of the sampled ozone flow, prevent gas turbulence, and improve the accuracy of the detected ozone concentration.

[0028] like Figure 3 As shown, the process structure of the ozone concentration sensor component in the multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection of the present invention is as follows: the multi-channel ultraviolet optical ozone concentration analyzer is mainly composed of the ozone concentration sensor 9 components 1, which can be divided into an ultraviolet lamp tube 9-1 (ultraviolet LED) light pool part and a detection air chamber part. The lamp tube modules are respectively from right to left: ultraviolet lamp tube 9-1, filter 9-2, refraction plate 9-3, reference light photoelectric receiver 9-4, detection air chamber 9-35, sampling light photoelectric receiver 9-7, stainless steel light pool body, the ultraviolet lamp tube light pool part and the light pool air chamber part adopt a split structural design, which is conducive to later maintenance, repair, replacement and the like.

[0029] Preferably, the ultraviolet lamp 9-1 in the ozone concentration sensor adopts a narrow-band (253.7nm) wavelength ultraviolet lamp 9-1 (ultraviolet LED), and a 253.7nm narrow-band ultraviolet filter 9-2 can be installed according to the performance of the ultraviolet lamp 9-1 (ultraviolet LED); the ultraviolet light generated by the ultraviolet lamp 9-1 passes through the filter 9-2, and the ultraviolet light is irradiated forward in the form of parallel light, and a part of the light is refracted by the 45-degree refraction plate to form a 90-degree light beam change, which is sensed by the reference light photoelectric receiver 9-4 The brightness of the ultraviolet light, the ultraviolet lamp 9-1 (ultraviolet LED) adopts a constant current method, and its brightness can be adjusted in real time by the signal processing mainboard according to the brightness signal of the reference light photoelectric receiver 9-4, so that the brightness of the ultraviolet lamp 9-1 can be locked within a certain range; a part of the light passes through the refraction plate 9-3, the ozone chamber (absorbed by ozone), and the sampling light photoelectric receiver 9-7 to sense the brightness of the ultraviolet light after absorption by the ozone gas, and through the dual optical path structure, according to Lambert Beer's law, the concentration of ozone is calculated by the single chip microcomputer and program in the signal processing mainboard.

[0030] According to the process requirements of the multi-channel UV optical ozone concentration analyzer main body 1 and the characteristics of ozone, the process connection components of the ozone concentration analyzer are all made of ozone corrosion-resistant components and materials such as stainless steel, polytetrafluoroethylene tubes, and glass.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection, characterized in that: Its components include: a multi-channel ultraviolet optical ozone concentration analyzer body, a multi-channel flowmeter, a multi-channel sampling tube, a multi-channel tee, a multi-channel ozone tail gas destroyer and a negative pressure suction air pump, and the multi-channel ultraviolet optical ozone concentration analyzer body includes: a multi-channel air inlet of the ozone concentration analyzer, a multi-channel two-way solenoid valve, a three-way connector, a three-way solenoid valve, an ozone zeroing catalyst, an ozone concentration sensor, an ozone tail gas destroyer, a gas filter, a pressure sensor, a negative pressure suction air pump, a flowmeter and an air outlet of the ozone concentration analyzer; The ozone concentration sensor comprises an ultraviolet lamp, an ultraviolet filter, a refracting plate, a reference light photoelectric receiver, a detection gas chamber, a temperature sensor and a sampling light photoelectric receiver; The multi-channel air inlet of the ozone concentration analyzer is connected to the multi-channel two-way solenoid valve, the multi-channel two-way solenoid valve is connected to the three-way connector, one end of the three-way connector is connected to the ozone zeroing catalyst and the other end is connected to the NC end of the anti-corrosion three-way solenoid valve, the COM end of the anti-corrosion three-way solenoid valve is connected to the air inlet of the ozone concentration sensor, the air outlet of the ozone concentration sensor is connected to the ozone tail gas destructor, the ozone tail gas destructor is connected to the gas filter, the gas filter is connected to the pressure sensor, the pressure sensor is connected to the flow meter, the flow meter is connected to the negative pressure suction air pump, and the negative pressure suction air pump is connected to the air outlet of the ozone concentration analyzer.

2. The multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection according to claim 1, characterized in that: A multi-channel tee is installed in front of the multi-channel flowmeter, and the tee is connected to the main body of the multi-channel ultraviolet optical ozone concentration analyzer. After the main body of the multi-channel ultraviolet optical ozone concentration analyzer is first zero-calibrated, the ozone gas in each room is sampled in the flow in sequence to detect and analyze the ozone concentration.

3. The multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection according to claim 1, characterized in that: The multi-channel two-way solenoid valve should adopt a normally closed two-way solenoid valve, and the anti-corrosion three-way solenoid valve should adopt a normally closed anti-corrosion three-way solenoid valve.

4. The multi-channel ultraviolet optical ozone concentration analyzer for space ozone disinfection according to claim 1, characterized in that: The ultraviolet lamp in the ozone concentration sensor adopts a narrow-band ultraviolet lamp with a wavelength of 253.7 nm.

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