CN111239337A - Oxygen-enriched air oxygen concentration detection structure for airborne separator - Google Patents
Oxygen-enriched air oxygen concentration detection structure for airborne separator Download PDFInfo
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- CN111239337A CN111239337A CN202010049890.0A CN202010049890A CN111239337A CN 111239337 A CN111239337 A CN 111239337A CN 202010049890 A CN202010049890 A CN 202010049890A CN 111239337 A CN111239337 A CN 111239337A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
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Abstract
The invention discloses an oxygen concentration detection structure of oxygen-enriched air for an airborne separator, belonging to the technology of gas oxygen concentration detection and characterized in that: the device comprises an airborne separator (2), a sampling pipeline (6), a pressure sensor (5), an oxygen partial pressure sensor (9), a one-way valve (7), a sealing gasket (3), a filtering and current-limiting component and a locking spiral ring (11); the invention provides an oxygen concentration detection structure of oxygen-enriched air for an airborne separator, which improves the test precision and reliability of a system and prolongs the service life of the system by filtering impurities of the oxygen-enriched air, limiting the gas flow and reducing the gas fluctuation.
Description
Technical Field
The invention belongs to the technology of gas oxygen concentration detection, and relates to an improvement of an oxygen-enriched air oxygen concentration detection structure for an airborne separator.
Background
Currently on-board separators can produce oxygen-enriched air from the compressed air source of the aircraft itself over a very long period of time. It is thus possible to provide the passengers with oxygen-enriched air not only during descent of the aircraft but also during its temporary flight altitude. Such as: chinese patent application CN1549785A (method and device for distributing oxygen-enriched air to aircraft passengers) discloses that "the separator 2 comprises an outlet line 8 and a line 10, wherein nitrogen-enriched air flows out of the line 8 and oxygen-enriched air flows in the line 10. The line 10 is provided with a sensor 12 to monitor the oxygen concentration of the oxygen-enriched air flowing therethrough. ", its disadvantages are: 1. when the aircraft descends between the cruising altitude and the temporary altitude, a first portion of oxygen-enriched air is delivered to the passengers from a separate source 18, and from the approach to the temporary altitude, at least during a substantially steady flight of the aircraft, an on-board separator 2 generates a second portion of oxygen-enriched air delivered to the passengers, the sensor 12 only detecting the oxygen concentration of the separator 2 oxygen-enriched air, and not the oxygen concentration of the separate source 18 oxygen-enriched air, it being seen that the sensor 12 is used relatively infrequently and without adequate verification of the service life; 2. chinese patent application CN1549785A discloses an oxygen concentration detection structure, which describes that oxygen-enriched air of the separator 2 flows in a pipeline 10, the pipeline 10 is provided with a sensor 12 to monitor the oxygen concentration of the oxygen-enriched air flowing therethrough, and the disclosed structure is relatively simple; 3. the sensor 12 is influenced by factors such as cleanliness, pressure and flow of the test gas in the test process, and the structure disclosed in the chinese patent application CN1549785A is difficult to meet the requirements of reliability, service life and test accuracy.
Disclosure of Invention
The purpose of the invention is: the oxygen concentration detection structure for the oxygen-enriched air of the airborne separator improves the testing precision, reliability and service life of the system by filtering impurities of the oxygen-enriched air, limiting the air flow and reducing air fluctuation.
The technical scheme of the invention is as follows: the utility model provides an oxygen boosting air oxygen concentration detection structure for airborne separator which characterized in that: the device comprises an airborne separator 2, a sampling pipeline 6, a pressure sensor 5, an oxygen partial pressure sensor 9, a one-way valve 7, a sealing gasket 3, a filtering and current-limiting component and a locking spiral ring 11; the sampling pipeline 6 is a cylinder which is horizontally placed, the left end face and the right end face of the sampling pipeline 6 are parallel, a step hole 6a which horizontally penetrates through the right end face is formed in the center of the left end face of the sampling pipeline 6, the inner diameter of the left section of the step hole 6a is smaller than that of the right section of the step hole, internal threads are formed in the right section of the step hole 6a, the left end face of the sampling pipeline 6 is in threaded connection with the airborne separator through end face sealing, at the moment, the left port of the step hole 6a of the sampling pipeline 6 is communicated with the output port of sampling gas of the airborne separator 2, and the airborne separator 2 conducts gas from an aircraft engine; the sealing gasket 3 is a nonmetal annular gasket, the inner hole of the sealing gasket 3 is not smaller than the inner diameter of the left section of the stepped hole 6a, and the sealing gasket 3 is positioned on the step end face of the stepped hole 6 a; the filtering flow-limiting assembly consists of a filtering block 4 and a filtering block outer shell 1, the outer shape of the filtering block outer shell 1 is in a stepped shaft shape with a large left part and a small right part, the filtering block outer shell 1 is provided with a stepped central hole with a large left part and a small right part, a large diameter hole at the left section of the central hole is a filtering block mounting hole, the cylindrical filtering block 4 is positioned in the filtering block mounting hole and keeps interference fit, the left surface of the filtering block 4 is not higher than the left port of the filtering block mounting hole, a flow-limiting hole 1a is formed by a hole at the right section of the stepped central hole of the filtering block outer shell 1, the inner diameter d of the flow-limiting hole 1a is 0.15mm, the flow-limiting hole 1a is positioned in a shaft 1b at the right section of the filtering block outer shell 1, the outer diameter at the left section of the filtering block outer shell 1 is not larger than the outer diameter of a sealing gasket 3, the filtering flow-limiting assembly is positioned in a hole at the right section of, the step end face of the outer shell 1 of the filter block is pressed tightly by the annular left end face of the locking spiral ring 11; two processing planes are arranged on the outer circumferential surface of the right section shaft 6b of the sampling pipeline 6, a threaded hole is respectively arranged at the center position of each plane, the threaded holes are communicated with the step hole 6a of the sampling pipeline 6, the threaded holes are positioned close to the right of the right section shaft 6b of the sampling pipeline 6 relative to the screwed locking spiral ring 11, and external threads of sensing parts of the pressure sensor 5 and the oxygen partial pressure sensor 9 are respectively arranged in the threaded holes and keep end face sealing; the right end face of the sampling pipeline 6 is in threaded connection with the one-way valve 7 through end face sealing, the right port of the stepped hole 6a of the sampling pipeline 6 is communicated with the input port of the one-way valve 7 at the moment, and the output port of the one-way valve 7 is communicated with a passenger cabin.
The filtering accuracy of the filtering block 4 is 200 meshes.
The invention has the advantages that: the oxygen concentration detection structure for the oxygen-enriched air of the airborne separator is provided, and the system test precision, reliability and service life are improved by filtering impurities of the oxygen-enriched air, limiting the air flow and reducing air fluctuation.
Drawings
Fig. 1 is a structural principle block of the present invention.
Detailed Description
The present invention is described in further detail below. Referring to fig. 1, an oxygen-enriched air oxygen concentration detection structure for an airborne separator is characterized in that: the device comprises an airborne separator 2, a sampling pipeline 6, a pressure sensor 5, an oxygen partial pressure sensor 9, a one-way valve 7, a sealing gasket 3, a filtering and current-limiting component and a locking spiral ring 11; the sampling pipeline 6 is a cylinder which is horizontally placed, the left end face and the right end face of the sampling pipeline 6 are parallel, a step hole 6a which horizontally penetrates through the right end face is formed in the center of the left end face of the sampling pipeline 6, the inner diameter of the left section of the step hole 6a is smaller than that of the right section of the step hole, internal threads are formed in the right section of the step hole 6a, the left end face of the sampling pipeline 6 is in threaded connection with the airborne separator through end face sealing, at the moment, the left port of the step hole 6a of the sampling pipeline 6 is communicated with the output port of sampling gas of the airborne separator 2, and the airborne separator 2 conducts gas from an aircraft engine; the sealing gasket 3 is a nonmetal annular gasket, the inner hole of the sealing gasket 3 is not smaller than the inner diameter of the left section of the stepped hole 6a, and the sealing gasket 3 is positioned on the step end face of the stepped hole 6 a; the filtering flow-limiting assembly consists of a filtering block 4 and a filtering block outer shell 1, the outer shape of the filtering block outer shell 1 is in a stepped shaft shape with a large left part and a small right part, the filtering block outer shell 1 is provided with a stepped central hole with a large left part and a small right part, a large diameter hole at the left section of the central hole is a filtering block mounting hole, the cylindrical filtering block 4 is positioned in the filtering block mounting hole and keeps interference fit, the left surface of the filtering block 4 is not higher than the left port of the filtering block mounting hole, a flow-limiting hole 1a is formed by a hole at the right section of the stepped central hole of the filtering block outer shell 1, the inner diameter d of the flow-limiting hole 1a is 0.15mm, the flow-limiting hole 1a is positioned in a shaft 1b at the right section of the filtering block outer shell 1, the outer diameter at the left section of the filtering block outer shell 1 is not larger than the outer diameter of a sealing gasket 3, the filtering flow-limiting assembly is positioned in a hole at the right section of, the step end face of the outer shell 1 of the filter block is pressed tightly by the annular left end face of the locking spiral ring 11; two processing planes are arranged on the outer circumferential surface of the right section shaft 6b of the sampling pipeline 6, a threaded hole is respectively arranged at the center position of each plane, the threaded holes are communicated with the step hole 6a of the sampling pipeline 6, the threaded holes are positioned close to the right of the right section shaft 6b of the sampling pipeline 6 relative to the screwed locking spiral ring 11, and external threads of sensing parts of the pressure sensor 5 and the oxygen partial pressure sensor 9 are respectively arranged in the threaded holes and keep end face sealing; the right end face of the sampling pipeline 6 is in threaded connection with the one-way valve 7 through end face sealing, the right port of the stepped hole 6a of the sampling pipeline 6 is communicated with the input port of the one-way valve 7 at the moment, and the output port of the one-way valve 7 is communicated with a passenger cabin.
The filtering accuracy of the filtering block 4 is 200 meshes.
The working principle of the invention is as follows: the sampling gas enters the filtering and flow limiting assembly through the sampling pipeline channel, and impurities possibly existing in the gas are filtered by the filtering block, so that the situation that the impurities block the flow limiting hole or pollute an oxygen partial pressure sensor for analyzing the sampling gas to cause output distortion or failure of the sensor is avoided; the filtered gas flows through a duckbill clamp for realizing deformation of a flow limiting hole and then outputs the required flow, under the condition that the set inlet pressure is 0.2MPag, the output required flow is in the range of 0.3L/min-0.5L/min, the sampled gas with flow limiting and pressure stabilizing functions flows through an oxygen partial pressure sensor, the oxygen partial pressure sensor performs oxygen partial pressure test on the sampled gas, the pressure sensor tests the pressure of the sampled gas, the oxygen concentration of the sampled gas is obtained through calculation, the flow limiting hole is changed to reach the required flow through the duckbill clamp through test, the processing difficulty of the flow limiting hole is reduced, a filtering flow limiting assembly is adopted, the filtering precision, pressure fluctuation and flow fluctuation of the sampled gas are improved, and the measuring precision and the service life of the oxygen partial pressure sensor and the pressure sensor are improved; the use of the one-way valve prevents the influence of the fluctuation of the cabin pressure on the pressure of the sampled gas, and improves the testing precision of the system; the test proves that: the measurement precision of the system is improved by more than 50%, and the replacement frequency of the sensor is reduced to one half of the original frequency.
In one embodiment of the invention, the onboard separator 2, the pressure sensor 5, the check valve 7 and the oxygen partial pressure sensor 9 are all finished parts.
Claims (2)
1. The utility model provides an oxygen boosting air oxygen concentration detection structure for airborne separator which characterized in that: the device comprises an airborne separator (2), a sampling pipeline (6), a pressure sensor (5), an oxygen partial pressure sensor (9), a one-way valve (7), a sealing gasket (3), a filtering and current-limiting component and a locking spiral ring (11); the sampling pipeline (6) is a cylinder which is horizontally placed, the left end face and the right end face of the sampling pipeline (6) are parallel, a step hole (6a) which horizontally penetrates through the right end face is formed in the center of the left end face of the sampling pipeline (6), the inner diameter of the left section of the step hole (6a) is smaller than that of the right section of the step hole, internal threads are formed in the right section of the step hole (6a), the left end face of the sampling pipeline (6) is in threaded connection with the airborne separator through end face sealing, at the moment, the left port of the step hole (6a) of the sampling pipeline (6) is communicated with a sampling gas outlet of the airborne separator (2), and the airborne separator (2) conducts gas from an aircraft engine; the sealing gasket (3) is a non-metal annular gasket, the inner hole of the sealing gasket (3) is not smaller than the inner diameter of the left section hole of the step hole (6a), and the sealing gasket (3) is positioned on the step end face of the step hole (6 a); the filtering flow-limiting assembly consists of a filtering block (4) and a filtering block outer shell (1), the outer shape of the filtering block outer shell (1) is in a stepped shaft shape with a large left part and a small right part, the filtering block outer shell (1) is provided with a stepped central hole with a large left part and a small right part, a large diameter hole at the left section of the central hole is a filtering block mounting hole, a cylindrical filtering block (4) is positioned in the filtering block mounting hole and keeps interference fit, the left surface of the filtering block (4) is not higher than the left end opening of the filtering block mounting hole, a flow-limiting hole (1a) is formed by a hole at the right section of the stepped central hole of the filtering block outer shell (1), the inner diameter d of the flow-limiting hole (1a) is 0.15mm, the flow-limiting hole (1a) is positioned in a shaft (1b) at the right section of the filtering block outer shell (1), the outer diameter of the left section of the filtering block outer shell (1) is not larger than the outer diameter of a sealing gasket (, the locking spiral ring (11) is screwed into a threaded hole of a right section shaft (6b) of the sampling pipeline (6) on the right side of the sealing gasket (3), and the annular left end face of the locking spiral ring (11) compresses the step end face of the filter block outer shell (1); two processing planes are arranged on the outer circumferential surface of a right section shaft (6b) of the sampling pipeline (6), a threaded hole is formed in the center of each plane, the threaded holes are communicated with step holes (6a) of the sampling pipeline (6), the threaded holes are positioned close to the right of the right section shaft (6b) of the sampling pipeline (6) relative to a screwed locking spiral ring (11), and external threads of sensing parts of a pressure sensor (5) and an oxygen partial pressure sensor (9) are respectively installed in the threaded holes and keep end face sealing; the right end face of the sampling pipeline (6) is in threaded connection with the one-way valve (7) through end face sealing, the right port of the stepped hole (6a) of the sampling pipeline (6) is communicated with the input port of the one-way valve (7), and the output port of the one-way valve (7) is communicated with a passenger cabin.
2. An oxygen enriched air oxygen concentration detection structure of an on-board separator according to claim 1, characterized in that: the filtering precision of the filtering block (4) is 200 meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010049890.0A CN111239337B (en) | 2020-01-17 | 2020-01-17 | Oxygen-enriched air oxygen concentration detection structure for airborne separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010049890.0A CN111239337B (en) | 2020-01-17 | 2020-01-17 | Oxygen-enriched air oxygen concentration detection structure for airborne separator |
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| CN111239337A true CN111239337A (en) | 2020-06-05 |
| CN111239337B CN111239337B (en) | 2020-11-13 |
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| EP1669290B1 (en) * | 2004-12-08 | 2008-06-04 | Hamilton Sundstrand Corporation | On-board inert gas generation system |
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| CN105727405A (en) * | 2016-01-30 | 2016-07-06 | 成都康拓兴业科技有限责任公司 | Airborne molecular sieve oxygen system |
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| US20170341002A1 (en) * | 2016-05-27 | 2017-11-30 | International Business Machines Corporation | Air quality monitoring, analysis and reporting system |
| CN108181942A (en) * | 2017-12-13 | 2018-06-19 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of airborne equipment of making nitrogen control device and method |
| CN108584877A (en) * | 2018-06-06 | 2018-09-28 | 南京航空航天大学 | A kind of airborne oxygen-nitrogen gas generating system processed of combination mangneto separation and membrane separation technique |
| CN109625298A (en) * | 2018-12-07 | 2019-04-16 | 中国航空工业集团公司西安飞机设计研究所 | A kind of oil gas isolating device and the aircraft with it |
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2020
- 2020-01-17 CN CN202010049890.0A patent/CN111239337B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7182856B2 (en) * | 2001-02-26 | 2007-02-27 | Pank Thomas E | Stormwater treatment train |
| CN1549785A (en) * | 2001-04-04 | 2004-11-24 | ������һ���ɷ�����˾ | Process and installation for the distribution of air enriched in oxygen to passengers of an aircraft |
| CN2631618Y (en) * | 2003-05-28 | 2004-08-11 | 林楼飞 | Separated oxygen plants |
| CN2661233Y (en) * | 2003-08-08 | 2004-12-08 | 林楼飞 | Vehicle mounted oxygen generator |
| EP1669290B1 (en) * | 2004-12-08 | 2008-06-04 | Hamilton Sundstrand Corporation | On-board inert gas generation system |
| CN202008474U (en) * | 2010-12-31 | 2011-10-12 | 中国飞行试验研究院 | Oxygen concentration measurement device |
| CN202387352U (en) * | 2011-12-15 | 2012-08-22 | 中国人民解放军军事医学科学院卫生装备研究所 | Small intelligent oxygen generating and pressing integrated machine |
| CN105828912A (en) * | 2013-12-20 | 2016-08-03 | 皇家飞利浦有限公司 | Oxygen separator with rapid diagnostic |
| CN105727405A (en) * | 2016-01-30 | 2016-07-06 | 成都康拓兴业科技有限责任公司 | Airborne molecular sieve oxygen system |
| US20170341002A1 (en) * | 2016-05-27 | 2017-11-30 | International Business Machines Corporation | Air quality monitoring, analysis and reporting system |
| CN108181942A (en) * | 2017-12-13 | 2018-06-19 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of airborne equipment of making nitrogen control device and method |
| CN108584877A (en) * | 2018-06-06 | 2018-09-28 | 南京航空航天大学 | A kind of airborne oxygen-nitrogen gas generating system processed of combination mangneto separation and membrane separation technique |
| CN109625298A (en) * | 2018-12-07 | 2019-04-16 | 中国航空工业集团公司西安飞机设计研究所 | A kind of oil gas isolating device and the aircraft with it |
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