CN105403619A - Device for detecting oxygen concentration - Google Patents
Device for detecting oxygen concentration Download PDFInfo
- Publication number
- CN105403619A CN105403619A CN201510923830.6A CN201510923830A CN105403619A CN 105403619 A CN105403619 A CN 105403619A CN 201510923830 A CN201510923830 A CN 201510923830A CN 105403619 A CN105403619 A CN 105403619A
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- CN
- China
- Prior art keywords
- sense channel
- detection
- channel
- testing circuit
- circuit plate
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/021—Gases
- G01N2291/0212—Binary gases
Abstract
The invention discloses a device for detecting an oxygen concentration, and relates to the gas concentration detection technology field. The device comprises a detection circuit board. A detection channel is arranged in the detection circuit board. The detection circuit board is detachably connected with the detection circuit board. Sealing layers are arranged at two ends of the detection channel respectively. Supersonic wave transmit-receive sensors are arranged at two sides of the detection circuit board respectively. The probes of the supersonic wave transmit-receive sensors are sealed by the sealing layers at two ends of the detection channels respectively. A gas sample channel is arranged above the detection channel. The gas sample channel is parallel to the detection circuit board and is arranged crossed with the detection channel. One end of the gas sample channel is equipped with a gas inlet, and the other end of the gas sample channel is equipped with a gas outlet. A diffusion channel is arranged between the gas sample channel and the detection channel. The structure is simple and reasonable, measuring is accurate, and the cost is lowered.
Description
Technical field
The present invention relates to Gas Thickness Detecting Technology field, particularly a kind of device detecting oxygen concentration.
Background technology
The device of detection oxygen concentration of the prior art measures oxygen proportion in nitrogen oxygen mixed gas by ultrasonic technology, and the sensor of this device is in multiple repairing weld process, and because flowing gas exists change, cause sampled data to change large, consistance is poor.In addition, air inlet outlet side and the sense channel of sample gas passage form certain angle, cause in whole sense channel, the gas velocity at two ends is with the flow velocity of air-flow in the flow direction and whole sense channel and flow to inconsistent, increase measuring error, and change for eliminating two ends air-flow the impact brought, then need longer sense channel to meet and measure requirement, cause cost to improve.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of device detecting oxygen concentration, to solve in the sampling process that causes in prior art, because flowing gas exists change, sampled data is caused to change large, consistance is poor, change for eliminating two ends air-flow the impact brought, then need longer sense channel to meet and measure requirement, cause the above-mentioned multinomial defects such as cost raising.
For achieving the above object, the invention provides following technical scheme: a kind of device detecting oxygen concentration, comprise testing circuit plate, it is characterized in that: described testing circuit plate is provided with sense channel, described sense channel and testing circuit plate removably connect, the two ends of described sense channel are respectively equipped with sealant, the both sides of described testing circuit plate are respectively equipped with ultrasonic transmission/reception sensor, the probe of described ultrasonic transmission/reception sensor is sealed in the two ends of sense channel respectively by sealant, the top of described sense channel is provided with sample gas passage, described sample gas passage is parallel to testing circuit plate and arranged in a crossed manner with sense channel, one end of described sample gas passage is provided with air intake opening, the other end is provided with gas outlet, diffusion admittance is provided with between described sample gas passage and sense channel.
Preferably, the two side of described sense channel is respectively equipped with locating piece, and described locating piece and testing circuit plate are bolted.
Preferably, described sealant is epoxide-resin glue water layer.
Preferably, described testing circuit plate is provided with some mounting holes.
The beneficial effect of above technical scheme is adopted to be: the device of the detection oxygen concentration of structure of the present invention, sample gas passage becomes the shaping distribution of right-angled intersection with sense channel, air intake opening is offered in one end of sample gas passage, the other end sets out gas port, one end diffusion admittance is installed between sample gas passage and sense channel, when sample gas flows through in sample gas passage, by in diffusion admittance flow detection passage, according to Fick law, high concentrations of gas spreads to light concentration gas, gas concentration in last sample gas passage and sense channel reaches mobile equilibrium, within the unitary sampling time period (0.01s), in sense channel, partial pressure of oxygen can be considered constant, these conditions meet sampling request, meet without the need to longer sense channel and measure requirement, reduce costs, avoid the harmful effect of existing detection technique simultaneously, sampled data is changed less, keep consistency, ultrasonic transmission/reception sensor is in dynamic balance state at sample gas, ultrasound wave is transmitted and received in sense channel, by the speed of detection computations ultrasonic propagation, the volume fraction of the oxygen obtaining nitrogen oxygen mixed gas in sense channel can be calculated, improve detection degree of accuracy.
Accompanying drawing explanation
Fig. 1 is the device of the detection oxygen concentration of prior art;
Fig. 2 is structural representation of the present invention;
Fig. 3 is vertical view of the present invention.
Wherein, 1-testing circuit plate, 2-sense channel, 3-sealant, 4-ultrasonic transmission/reception sensor, 5-sample gas passage, 6-air intake opening, 7-gas outlet, 8-diffusion admittance, 9-mounting hole, 10-locating piece, 11-bolt.
Embodiment
The preferred embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
Fig. 2 and Fig. 3 shows the specific embodiment of the present invention: a kind of device detecting oxygen concentration, comprise testing circuit plate 1, described testing circuit plate 1 is provided with sense channel 2, described sense channel 2 removably connects with testing circuit plate 1, the two ends of described sense channel 2 are respectively equipped with sealant 3, the both sides of described testing circuit plate 1 are respectively equipped with ultrasonic transmission/reception sensor 4, the probe of described ultrasonic transmission/reception sensor 4 is sealed in the two ends of sense channel 2 respectively by sealant 3, the top of described sense channel 2 is provided with sample gas passage 5, described sample gas passage 5 is parallel arranged in a crossed manner with sense channel 2 with testing circuit plate 1, one end of described sample gas passage 5 is provided with air intake opening 6, the other end is provided with gas outlet 7, diffusion admittance 8 is provided with between described sample gas passage 5 and sense channel 2.
In the present embodiment, the two side of described sense channel 2 is respectively equipped with locating piece 10, and described locating piece 10 is connected by bolt 11 with testing circuit plate 1, by locating piece 10, sense channel 2 is arranged on testing circuit plate 1, install firmly, good stability, and dismantle convenient.
In the present embodiment, described sealant 3 is epoxide-resin glue water layer, epoxy resin glue good sealing effect, and cheap, reduces costs.
In the present embodiment, described testing circuit plate 1 is provided with some mounting holes 9, is convenient to the installation of whole device.
Based on above-mentioned, the device of the detection oxygen concentration of structure of the present invention, sample gas passage 5 distribution shaping with sense channel 2 one-tenth right-angled intersection, air intake opening 6 is offered in one end of sample gas passage 5, the other end sets out gas port 7, between sample gas passage 5 and sense channel 2, one end diffusion admittance 8 is installed, when sample gas flows through in sample gas passage 5, by in diffusion admittance 8 flow detection passage 2, according to Fick law, high concentrations of gas spreads to light concentration gas, last sample gas passage 5 reaches mobile equilibrium with the gas concentration in sense channel 2, because the mode of measured gas by diffusion enters and be evenly distributed in sense channel 2, disturb without too much dynamic air current, data fluctuations is little, reduce measuring error, improve measuring accuracy, simultaneously, data sampling can be carried out in shorter sense channel 2, meet without the need to longer sense channel and measure requirement, reduce costs.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (4)
1. one kind is detected the device of oxygen concentration, comprise testing circuit plate, it is characterized in that: described testing circuit plate is provided with sense channel, described sense channel and testing circuit plate removably connect, the two ends of described sense channel are respectively equipped with sealant, the both sides of described testing circuit plate are respectively equipped with ultrasonic transmission/reception sensor, the probe of described ultrasonic transmission/reception sensor is sealed in the two ends of sense channel respectively by sealant, the top of described sense channel is provided with sample gas passage, described sample gas passage is parallel to testing circuit plate and arranged in a crossed manner with sense channel, one end of described sample gas passage is provided with air intake opening, the other end is provided with gas outlet, diffusion admittance is provided with between described sample gas passage and sense channel.
2. the device of detection oxygen concentration according to claim 1, is characterized in that: the two side of described sense channel is respectively equipped with locating piece, described locating piece and testing circuit plate are bolted.
3. the device of detection oxygen concentration according to claim 1, is characterized in that: described sealant is epoxide-resin glue water layer.
4. the device of detection oxygen concentration according to claim 1, is characterized in that: described testing circuit plate is provided with some mounting holes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923830.6A CN105403619A (en) | 2015-12-11 | 2015-12-11 | Device for detecting oxygen concentration |
| PCT/CN2016/095622 WO2017096943A1 (en) | 2015-12-11 | 2016-08-17 | Apparatus for detecting oxygen concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923830.6A CN105403619A (en) | 2015-12-11 | 2015-12-11 | Device for detecting oxygen concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105403619A true CN105403619A (en) | 2016-03-16 |
Family
ID=55469235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510923830.6A Pending CN105403619A (en) | 2015-12-11 | 2015-12-11 | Device for detecting oxygen concentration |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105403619A (en) |
| WO (1) | WO2017096943A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017096943A1 (en) * | 2015-12-11 | 2017-06-15 | 佛山市顺德区键合电子有限公司 | Apparatus for detecting oxygen concentration |
| WO2018086086A1 (en) * | 2016-11-11 | 2018-05-17 | 佛山市顺德区键合电子有限公司 | Method for improving accuracy of oxygen concentration detection |
| CN112730607A (en) * | 2020-12-31 | 2021-04-30 | 青岛精安医疗科技有限责任公司 | Ultrasonic oxygen concentration measuring method and system based on flow detection and oxygen generation system |
| CN112730606A (en) * | 2020-12-31 | 2021-04-30 | 青岛精安医疗科技有限责任公司 | Ultrasonic oxygen concentration measuring method and system based on pressure detection and oxygen generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5557251B2 (en) * | 2010-11-17 | 2014-07-23 | 愛知時計電機株式会社 | Gas microflow detection method, gas leak inspection method, gas leak inspection apparatus, and ultrasonic flowmeter |
| CN105403619A (en) * | 2015-12-11 | 2016-03-16 | 佛山市顺德区键合电子有限公司 | Device for detecting oxygen concentration |
-
2015
- 2015-12-11 CN CN201510923830.6A patent/CN105403619A/en active Pending
-
2016
- 2016-08-17 WO PCT/CN2016/095622 patent/WO2017096943A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5351522A (en) * | 1993-11-02 | 1994-10-04 | Aequitron Medical, Inc. | Gas sensor |
| CN1455865A (en) * | 2001-01-22 | 2003-11-12 | 帝人株式会社 | Equipment and method for measuring concentration and flow rate of gas ultrasonically |
| CN102600538A (en) * | 2011-01-19 | 2012-07-25 | 郑州人民医院 | Device for measuring concentration of medical oxygen |
| CN102830164A (en) * | 2012-08-23 | 2012-12-19 | 郑州光力科技股份有限公司 | On-line detection method and apparatus of methane concentration |
| CN202870035U (en) * | 2012-08-23 | 2013-04-10 | 郑州光力科技股份有限公司 | Methane concentration detector |
| CN102914589A (en) * | 2012-09-29 | 2013-02-06 | 郑州光力科技股份有限公司 | Method for detecting methane concentration by ultrasonic waves |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017096943A1 (en) * | 2015-12-11 | 2017-06-15 | 佛山市顺德区键合电子有限公司 | Apparatus for detecting oxygen concentration |
| WO2018086086A1 (en) * | 2016-11-11 | 2018-05-17 | 佛山市顺德区键合电子有限公司 | Method for improving accuracy of oxygen concentration detection |
| CN108369213A (en) * | 2016-11-11 | 2018-08-03 | 佛山市顺德区键合电子有限公司 | A method of improving detection oxygen concentration accuracy |
| CN112730607A (en) * | 2020-12-31 | 2021-04-30 | 青岛精安医疗科技有限责任公司 | Ultrasonic oxygen concentration measuring method and system based on flow detection and oxygen generation system |
| CN112730606A (en) * | 2020-12-31 | 2021-04-30 | 青岛精安医疗科技有限责任公司 | Ultrasonic oxygen concentration measuring method and system based on pressure detection and oxygen generation system |
| CN112730607B (en) * | 2020-12-31 | 2022-12-16 | 青岛精安医疗科技有限责任公司 | Ultrasonic oxygen concentration measuring method and system based on flow detection and oxygen generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017096943A1 (en) | 2017-06-15 |
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Application publication date: 20160316 |
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