CN1220043C - Ozone concentration detection method and device used for ozone box - Google Patents
Ozone concentration detection method and device used for ozone box Download PDFInfo
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- CN1220043C CN1220043C CN 03150992 CN03150992A CN1220043C CN 1220043 C CN1220043 C CN 1220043C CN 03150992 CN03150992 CN 03150992 CN 03150992 A CN03150992 A CN 03150992A CN 1220043 C CN1220043 C CN 1220043C
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Abstract
The present invention relates to a method and a device for detecting the ozone concentration of an ozone ageing test chamber. The detection method comprises the step of measuring the flow quantity Q1 of a main air supply passage used for supplying air to a working room. The detection method is characterized in that the flow quantity Q2 of an ozone supply passage used for supplying ozone to an air ozone mixer is simultaneously measured when the flow quantity Q1 of the main air supply passage is measured; the ozone concentration in the ozone supply passage can be detected by nondispersive ultraviolet absorption spectrophotometry to determine the values of Q1/Q2, and thus, the concentration value of the ozone in the working room is calculated. The detecting device comprises the following components: in the original device, a flow meter is arranged on an air inlet pipe of an ozonizer, and a sample pipe is arranged on an air outlet pipe; the detecting device is also provided with a light path detection system composed of a sample pipe, an ultraviolet light source, a detector, a signal processor and a reader. The present invention can continuously detect the ozone concentration in the working room in real time, the detection system structure is simple and the production cost is low.
Description
Technical field
The present invention relates to a kind of ozone concentration detection method and device, particularly a kind of ozone concentration detection method and device that is used for ozone box.
Background technology
In the prior art, air supply system in the ozone box is: be communicated with the main air feed air feed road that operating room's import constitutes by pneumatic pump outlet through voltage stabilizer, dry cleaner, flowmeter, well heater and mixer, and by a way outlet of dry cleaner be communicated with through ozone generator that a branch road import of mixer constitutes for the ozone gas circuit.And being set on the outlet pipe of operating room, a sample hose uses for measuring ozone concentration.Concentration detection method mainly contains two big classes in the existing ozone box:
The first kind, the tail gas of collecting work chamber output obtains the ozone concentration value by chemistry titration again with chemical method reaction absorption ozone wherein.This class methods operating performance trouble, time-consuming many, also want strict control sampling quantity, and will guarantee that absorption of sample is complete, very want some doing.This method of what is more important can't realize the ozone concentration in the real-time continuous testing chamber.And realize that the ozone concentration in the real-time continuous testing chamber is the necessary function of instrument of making high-quality real-time continuous scalable operating room ozone concentration.
Second class adopts the on-dispersive ultraviolet absorption method, the ozone concentration in the continuous detecting operating room tail gas such as electrochemical process.Because the ozone concentration in operating room's tail gas is extremely low, 0.01-0.5PPM is usually only arranged.Therefore its detection system needs very high sensitivity and stability, could obtain necessary detection signal strength and signal to noise ratio (S/N ratio).So the detection system complex structure of this quasi-instrument, manufacturing cost is very high.And the ozone concentration in operating room's tail gas to detect error when low bigger.
Summary of the invention
The object of the present invention is to provide a kind of ozone concentration detection method and device that is used for ozone box, the ozone concentration in the energy real-time continuous testing chamber, the detection system structure is simpler, low cost of manufacture.
For achieving the above object, the present invention adopts following technical proposals: a kind of ozone concentration detection method that is used for ozone box, comprise the flow Q1 of measurement to the primary air air feed road of operating room's air feed, it is characterized in that, when measuring primary air air feed road flow Q1, measure simultaneously to the flow Q2 of air ozone mixer for the ozone gas circuit, and on the ozone generator outlet pipe, sample hose is set, adopt the on-dispersive ultra-violet absorption spectrometry to detect the ozone concentration that supplies ozone gas in the ozone gas circuit, thereby converse the ozone concentration in the operating room.
Air mass flow Q1 in the above-mentioned primary air air feed road be the 10-1000 liter/minute, be the 1/10-1/1000 of air mass flow Q1 in the primary air air feed road, i.e. Q1/Q2=10-1000 for the flow Q2 that contains ozone gas in the ozone gas circuit; Gas exchange rate in the operating room is 1-3 time/minute.
Above-mentioned on-dispersive UV Absorption photometry detects for one of method that contains the ozone gas ozone concentration in the ozone gas circuit: in a side of sample hose with ultraviolet source irradiation, and opposite side detects uitraviolet intensity with detecting device, exports signal processor and reader to thereby obtain the ozone concentration signal; The detection step is:
A. after the start, do not drive ozone generator earlier, under the ozone free situation, gather blank signal earlier;
B. after opening ozone generator, continuing the collected specimens signal;
C. distinguish feed signals processor and reader, obtain continuously ozone concentration value in real time;
D. converse ozone concentration value in the operating room with fixing Q1/Q2 value.
Above-mentioned on-dispersive UV Absorption photometry detects for two of the method that contains the ozone gas ozone concentration in the ozone gas circuit: the reference pipe is set on the ozone generator air inlet pipeline, in a side of reference pipe and sample hose with ultraviolet source irradiation, and their opposite side respectively detects uitraviolet intensity with a detecting device, exports signal processor and reader to thereby obtain the ozone concentration signal; The detection step is:
A. after the start, detect the ultraviolet ray intensity of reference pipe and sample hose simultaneously; While feed signals processor and reader, the reading of regulating reader are zero.
B. open ozone generator, detect the ultraviolet ray intensity of reference pipe and sample hose simultaneously; Feed signals processor and reader obtain continuously ozone concentration value in real time simultaneously;
C. converse ozone concentration value in the operating room with fixing Q1/Q2 value.
A kind of ozone concentration detection device that is used for ozone box, comprise by the pneumatic pump outlet and be communicated with the main air feed road that operating room's import constitutes through voltage stabilizer, dry cleaner, flowmeter, well heater and mixer, and by a way outlet of dry cleaner be communicated with through ozone generator that a branch road import of mixer constitutes for the ozone gas circuit, it is characterized in that in the ozone gas circuit, a flowmeter is set on the air inlet pipeline of ozone generator, and a sample hose is set on the outlet pipe; One light path detection is arranged, its structure is: the side at sample hose is provided with a ultraviolet source, and opposite side is provided with an on-dispersive ultraviolet ray intensity detecting device, the delivery outlet of detecting device connects the input port of a signal processing system, and the delivery outlet of signal processing system connects the input port of a frame of reference.
A reference pipe also is set on the air inlet pipeline of above-mentioned ozone generator; In the light path detection, a side of reference pipe is facing to ultraviolet source, and opposite side is provided with an on-dispersive ultraviolet ray intensity detecting device, and its delivery outlet connects the input port of signal processing system.
The present invention compared with prior art, have following outstanding feature and remarkable advantage: the present invention gets rid of in the prior art that to adopt operating room's tail gas be detected object, but adopt operating room's air feed is detected object, sample hose is arranged on in the ozone gas circuit, ozone concentration height in the tested gas, thereby the sample signal that obtains is strong, signal to noise ratio (S/N ratio) is big, be easy to accurately measure its ozone concentration value, help improving accuracy of measurement and reliability, help improving the job stability of instrument, so light path system to instrument, the requirement of electronic signal process system and UV-detector reduces greatly, and detection system is simple in structure, and manufacturing cost is lower.
Description of drawings
Fig. 1 is the air supply system structured flowchart of one embodiment of the present of invention.
Fig. 2 is the monochromatic light road detection system block diagram of Fig. 1 example.
Fig. 3 is the air supply system structured flowchart of another embodiment of the present invention.
Fig. 4 is the double light path detection system block diagram of Fig. 3 example.
Embodiment
Embodiment one: referring to Fig. 1 and Fig. 2, originally the ozone concentration detection method that is used for ozone box, comprise the flow Q1 of measurement to the primary air air feed road of operating room's 7 air feed, measure simultaneously to the flow Q2 of air ozone mixer 6 for the ozone gas circuit, and adopt the on-dispersive ultra-violet absorption spectrometry to detect the ozone concentration that supplies ozone gas in the ozone gas circuit, thereby converse the ozone concentration in the operating room.Adjust air mass flow Q1 in the primary air air feed road and be the 10-1000 liter/minute, be the 1/10-1/1000 of air mass flow Q1 in the primary air air feed road, i.e. Q1/Q2=10-1000 for the flow Q2 that contains ozone gas in the ozone gas circuit; Gas exchange rate in the operating room 7 is 1-3 time/minute.Above-mentioned on-dispersive UV Absorption photometric detection for the method that contains the ozone gas ozone concentration in the ozone gas circuit is: sample hose 8 is set on the ozone generator outlet pipe, side at sample hose 8 is shone with ultraviolet source 12, and opposite side detects the UVA luminosity and exports the ozone concentration signal to signal processor 14 and reader 15 with detecting device 13; The detection step is:
A. after the start, do not drive ozone generator earlier, under the ozone free situation, gather blank signal earlier;
B. after opening ozone generator, continuing the collected specimens signal;
C. distinguish feed signals processor 14 and reader 15, obtain continuously ozone concentration value in real time;
D. with the ozone concentration value in the fixing Q1/Q2 value conversion place operating room 7.
The ozone concentration detection device that is used for ozone box of present embodiment, referring to Fig. 1 and Fig. 2, comprise by pneumatic pump 1 outlet and be communicated with the main air feed air feed road that operating room's 7 imports constitute through voltage stabilizer 2, dry cleaner 3, flowmeter 4, well heater 5 and mixer 6, and by a way outlet of dry cleaner 3 be communicated with through ozone generator 9 that a branch road import of mixer 6 constitutes for the ozone gas circuit, in the ozone gas circuit, a flowmeter 11 is set on the air inlet pipeline of ozone generator 9, and a sample hose 8 is set on the outlet pipe; One light path detection is arranged, its structure is: the side at sample hose 8 is provided with a ultraviolet source 12, and opposite side is provided with the detecting device 13 of an on-dispersive uv absorption luminosity, the delivery outlet of detecting device 13 connects the input port of a signal processing system 14, and the delivery outlet of signal processing system 14 connects the input port of a frame of reference 15.Above-mentioned ultraviolet wavelength is 254nm, and the GD-18 type ultraviolet light sensing tube of above-mentioned detecting device 13,16 Chengdu rising sun light, above-mentioned signal processor 14 mainly connect a logarithmic circuit by a voltage amplifier output and form.
Embodiment two: referring to Fig. 3 and Fig. 4, the detection method of present embodiment and the detection method of the foregoing description are basic identical, institute's difference is: on-dispersive UV Absorption photometry detects for the method that contains the ozone gas ozone concentration in the ozone gas circuit and is: reference pipe 10 is set on the ozone generator air inlet pipeline, and sample hose 8 is set on the outlet pipe, side at reference pipe 10 and sample hose 8 is shone with ultraviolet source 12, and their opposite side is respectively with a detecting device 13,16 detect the UVA luminosity and export the ozone concentration signal respectively to processor 14 and reader 15; The detection step is:
A. after the start, detect the ultraviolet ray intensity of reference pipe and sample hose simultaneously; While feed signals processor and reader, the reading of regulating reader are zero.
B. open ozone generator, detect the ultraviolet ray intensity of reference pipe and sample hose simultaneously; Feed signals processor and reader obtain continuously ozone concentration value in real time simultaneously;
C. converse ozone concentration value in the operating room with fixing Q1/Q2 value.
Referring to Fig. 3 and Fig. 4, the device of the device of the detection method of present embodiment and the detection method of the foregoing description is basic identical, and institute's difference is: a reference pipe 10 also is set on the air inlet pipeline of ozone generator 9; In the light path detection, a side of reference pipe 10 is facing to ultraviolet source 12, and opposite side is provided with the detecting device 16 of an on-dispersive ultraviolet luminosity, and its delivery outlet connects the input port of signal processing system 14.
Claims (6)
1. ozone concentration detection method that is used for ozone box, comprise the flow Q1 of measurement to the primary air air feed road of operating room (7) air feed, it is characterized in that, when measuring primary air air feed road flow Q1, measure simultaneously to the flow Q2 of air ozone mixer (6) for the ozone gas circuit, and sample hose (8) is set on the ozone generator outlet pipe, adopt the on-dispersive ultra-violet absorption spectrometry to detect the ozone concentration that supplies ozone gas in the ozone gas circuit, thereby converse the ozone concentration in the operating room.
2. the ozone concentration detection method that is used for ozone box according to claim 1, it is characterized in that air mass flow Q1 in the primary air air feed road be the 10-1000 liter/minute, for the flow Q2 that contains ozone gas in the ozone gas circuit is the 1/10-1/1000 of air mass flow Q1 in the primary air air feed road, i.e. Q1/Q2=10-1000; Gas exchange rate in the operating room (7) is 1-3 time/minute.
3. the ozone concentration detection method that is used for ozone box according to claim 1, it is characterized in that on-dispersive UV Absorption photometry detects the method that supplies to contain the ozone gas ozone concentration in the ozone gas circuit and is: the side at sample hose (8) is shone with ultraviolet source (12), and opposite side detects uitraviolet intensity with detecting device (13), exports signal processor (14) and reader (15) to thereby obtain the ozone concentration signal; The detection step is:
A. after the start, do not drive ozone generator earlier, under the ozone free situation, gather blank signal earlier;
B. after opening ozone generator, continue the collected specimens signal again;
C. distinguish feed signals processor (14) and reader (15), obtain continuously ozone concentration value in real time;
D. converse ozone concentration value in the operating room (7) with fixing Q1/Q2 value.
4. the ozone concentration detection method that is used for ozone box according to claim 1, it is characterized in that on-dispersive UV Absorption photometry detects the method that supplies to contain the ozone gas ozone concentration in the ozone gas circuit and is: reference pipe (10) is set on the ozone generator air inlet pipeline, side at reference pipe (10) and sample hose (8) is shone with ultraviolet source (12), and their opposite side respectively detects uitraviolet intensity with a detecting device (13,16), exports processor (14) and reader (15) to thereby obtain the ozone concentration signal; The detection step is:
A. after the start, detect the ultraviolet ray intensity of reference pipe (10) and sample hose (8) simultaneously; While feed signals processor (14) and reader (15), the reading of regulating reader are zero.
B. open ozone generator, detect the ultraviolet ray intensity of reference pipe (10) and sample hose (8) simultaneously; Feed signals processor (14) and reader (15) obtain continuously ozone concentration value in real time simultaneously;
C. converse ozone concentration value in the operating room (7) with fixing Q1/Q2 value.
5. the device that is used for the ozone concentration detection method of ozone box according to claim 1, comprise by pneumatic pump (1) outlet through voltage stabilizer (2), dry cleaner (3), flowmeter (4), well heater (5) and mixer (6) and be communicated with the main air feed road that operating room (7) import constitutes, and the confession ozone gas circuit that is communicated with the branch road import formation of mixer (6) by a way outlet of dry cleaner (3) through ozone generator (9), it is characterized in that in the ozone gas circuit, a flowmeter (11) is set on the air inlet pipeline of ozone generator (9), and a sample hose (8) is set on the outlet pipe; One light path detection is arranged, its structure is: the side at sample hose (8) is provided with a ultraviolet source (12), and opposite side is provided with the detecting device (13) of an on-dispersive uv absorption luminosity, the delivery outlet of detecting device (13) connects the input port of a signal processing system (14), and the delivery outlet of signal processing system (14) connects the input port of a frame of reference (15).
6. the device that is used for the ozone concentration detection method of ozone box according to claim 5 is characterized in that on the air inlet pipeline of ozone generator (9) a reference pipe (10) being set also; In the light path detection, a side of reference pipe (10) is facing to ultraviolet source (12), and opposite side is provided with the detecting device (16) of an on-dispersive ultraviolet luminosity, and its delivery outlet connects the input port of signal processing system (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03150992 CN1220043C (en) | 2003-09-16 | 2003-09-16 | Ozone concentration detection method and device used for ozone box |
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| CN 03150992 CN1220043C (en) | 2003-09-16 | 2003-09-16 | Ozone concentration detection method and device used for ozone box |
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| CN1220043C true CN1220043C (en) | 2005-09-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358585C (en) * | 2004-10-27 | 2008-01-02 | 上海大学 | Air disinfector with exhaust ozone density detecting and regulating functions |
| TWI573567B (en) * | 2012-08-30 | 2017-03-11 | 財團法人工業技術研究院 | Ozone-disinfecting hand-held device, method, cover, ozone-concentration detecting module and method |
| CN104020121B (en) * | 2014-05-28 | 2016-08-17 | 广西电网公司电力科学研究院 | A kind of switch cubicle ozone content identification system of anti-interference key technology |
| CN107219324B (en) * | 2017-07-13 | 2023-06-06 | 中国科学院城市环境研究所 | Ozone purification evaluation system and method with adjustable humidity and content |
| CN108375651B (en) * | 2018-02-24 | 2019-10-11 | 恒天摩尔科技(山东)有限公司 | The detection method and detection device of gas reaction concentration |
| CN112255187A (en) * | 2020-10-14 | 2021-01-22 | 合肥福瞳光电科技有限公司 | Ozone on-line measuring system |
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