CN106525518A - Airborne sampling system capable of automatically changing sampling system pressure and application thereof - Google Patents

Airborne sampling system capable of automatically changing sampling system pressure and application thereof Download PDF

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Publication number
CN106525518A
CN106525518A CN201611243508.XA CN201611243508A CN106525518A CN 106525518 A CN106525518 A CN 106525518A CN 201611243508 A CN201611243508 A CN 201611243508A CN 106525518 A CN106525518 A CN 106525518A
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China
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pipe
airborne
sampling system
mouth
sampling
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Chinese (zh)
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CN106525518B (en
Inventor
杨小阳
吕连宏
马瑾
刘世杰
张玮琦
程苗苗
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Chinese Research Academy of Environmental Sciences
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Chinese Research Academy of Environmental Sciences
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2273Atmospheric sampling
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2273Atmospheric sampling
    • G01N2001/2279Atmospheric sampling high altitude, e.g. rockets, balloons

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention provides an airborne sampling system capable of automatically changing sampling system pressure and application thereof. The airborne sampling system comprises an airborne sampling head, a computer, a sampling main pipe, a pump and a pressure meter, wherein the airborne sampling head comprises a T pipe; the ends of the transverse orifices on both sides and the radial orifice in the T pipe are respectively an open structure; the internal diameter of the transverse orifice on one side is less than the internal diameter of the orifice on the other side, and the position in the orifice on the other side adjacent to the radial orifice is provided with a bulge; the radial orifice of the airborne sampling head, the sampling main pipe and the pump are sequentially connected; the pressure meter is arranged on the sampling main pipe; and the computer is respectively connected with the pump and pressure meter. The airborne sampling system capable of preventing moisture from condensation and reflux is used for collecting and monitoring air outside the aircraft cabin. The airborne sampling head can be utilized to effectively prevent the moisture condensed from water vapor from aggregation at the air inlet, thereby enhancing the sample collection efficiency and quality.

Description

A kind of airborne sampling system that can change automatically sampling system pressure and its application
Technical field
The present invention relates to sample unit field, in particular it relates to a kind of can change the airborne of sampling system pressure automatically Sampling system and its application.
Background technology
After aircraft invention, aircraft is increasingly becoming the indispensable vehicles of modern civilization, its deep change With the life that have impact on people, open people and conquer blue sky history.But as aircraft is to fly in the air, therefore to safety There is very high requirement.And the part and flight progress of aircraft is all affected by external environment, therefore moment monitoring is extraneous The situation of environment becomes extremely important.The air inlet being arranged at present out of my cabin mostly is T-shaped pipe, as shown in figure 1, but in air inlet During sampling, due to being affected by temperature and pressure, the vapor in air can condense into steam and in T-shaped pipe Intersection is assembled, so as to affect the sampling of air inlet.Particularly in the case of aircraft high-speed flight, air out of my cabin enters During QI KOU, it is easier to the phenomenon of steam coagulation occur.When these vapor are sucked by sampling instrument, test result can be produced Raw large effect.Further, since the high speed flight at high altitude of aircraft, the pressure in external environment is relatively low, gathers sample strain Difference may cause great impact to testing result and detecting instrument.
Accordingly, it would be desirable to one kind can avoid vapor from condensing on tube wall, reduce measurement error and with low cost and energy The device of sampled pressure is detected enough.
The content of the invention
It is an object of the invention to the vapor due to being affected by temperature and pressure in overcoming prior art, in air Steam can be condensed into assemble in air inlet, so as to affecting the sampling of air inlet and the difference of sampled pressure to testing result and Detecting instrument causes the defect of significant impact, there is provided a kind of airborne sampling system for being prevented from condensation of moisture and flowing backwards.
To achieve these goals, in a first aspect, the invention provides a kind of can change sampling system pressure automatically Airborne sampling system, the sampling system include airborne sampling head, computer, sampling house steward, pump and piezometer, described airborne to adopt Sample head includes T-shaped pipe, wherein, in the T-shaped pipe, the end of the horizontal mouth of pipe in both sides and the radial direction mouth of pipe is hatch frame, the horizontal stroke Internal diameter of the internal diameter of the side mouth of pipe less than the opposite side mouth of pipe in the mouth of pipe, while the close radial tubes in the opposite side mouth of pipe Mouthful position is conformed with, and the radial direction mouth of pipe of the airborne sampling head, sampling house steward and pump are sequentially connected, and the piezometer is arranged at On sampling house steward, the computer is respectively connected with pump and piezometer.
Preferably, the side mouth of pipe is less than the internal diameter near pipe outer end near the inner internal diameter of pipe.
Preferably, the opposite side mouth of pipe is less than the internal diameter near pipe outer end near the inner internal diameter of pipe.
Preferably, the airborne sampling head also includes suction nozzle, wherein, the suction nozzle is fixed on the side mouth of pipe Pipe is inner.
Preferably, the suction nozzle exceedes vertical position of the T-shaped caliber to the mouth of pipe away from the position of the inner one end of the pipe Put.
Preferably, the suction nozzle near the inner internal diameter of the pipe more than away from the inner internal diameter of the pipe.
Preferably, the sampling and monitoring device also includes some detecting instruments, and some detecting instruments are independently of one another It is connected with sampling house steward.
On the other hand, present invention also offers the aforesaid airborne sampling system that can change automatically sampling system pressure exists Application in the outer air of collection monitoring aircraft cabin.
Using the airborne sampling system that can change automatically sampling system pressure of the present invention, water steaming can be effectively prevented The steam that airsetting is formed is assembled in air inlet, so as to improve the efficiency and quality of collection sample.Additionally, the device knot of the present invention Structure is simple, it is easy to remove and install, and using the device collection sample of the present invention, real-time monitoring can be carried out to the pressure of sample, right Each instrument has good protective effect, and in the environment of being particularly well-suited to the low pressure such as high-altitude.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of description, with following tool Body embodiment is used for explaining the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is airborne sampling head of the prior art;
Fig. 2 is a kind of airborne sampling head of the present invention;
Fig. 3 is a kind of airborne sampling head of preferred implementation of the present invention;
Fig. 4 is a kind of airborne sampling system for being prevented from condensation of moisture and refluence of preferred implementation of the present invention.
Description of reference numerals
1 T-shaped pipe, 2 suction nozzle
3 projection, 4 computer
5 sampling 6 pumps of house steward
6 piezometer, 8 detecting instrument
Specific embodiment
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that described herein concrete Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
Herein the end points and any value of disclosed scope is not limited to the accurate scope or value, these scopes or Value should be understood to comprising the value for being close to these scopes or value.For numerical range, between the endpoint value of each scope, respectively Between the endpoint value of individual scope and single point value, and individually one or more can be obtained with combination with one another between point value New numerical range, these numerical rangies should be considered concrete open herein.Herein, when each mouth of pipe or single of comparison During the internal diameter magnitude relationship respectively held in the mouth of pipe, it should be understood that it is coaxial or substantially coaxial to be somebody's turn to do the two, additionally, working as what is compared In each mouth of pipe, the internal diameter of a certain mouth of pipe is non-homogeneous, using the minimum diameter of the mouth of pipe as the internal diameter of the mouth of pipe.
The invention provides a kind of airborne sampling system for being prevented from condensation of moisture and flowing backwards, described to be prevented from aqueous vapor The airborne sampling system for condensing and flowing backwards includes airborne sampling head, computer 4, sampling house steward 5, pump 6 and piezometer 7, the machine Carrying sampling head includes T-shaped pipe 1, wherein, in the T-shaped pipe 1, the end of the horizontal mouth of pipe in both sides and the radial direction mouth of pipe is hatch frame, Internal diameter of the internal diameter of the side mouth of pipe less than the opposite side mouth of pipe in the horizontal mouth of pipe, while close in the opposite side mouth of pipe Radial direction nozzle position is conformed with 3, and the radial direction mouth of pipe of the airborne sampling head, sampling house steward 5 and pump 6 are sequentially connected, the pressure Power meter 7 is arranged on sampling house steward 6, and the computer 4 is respectively connected with pump 6 and piezometer 7.
Wherein, as shown in Fig. 2 the end of the horizontal mouth of pipe in both sides and the radial direction mouth of pipe is hatch frame in the T-shaped pipe 1, Air can be caused into or out in three ends of T-shaped pipe, the horizontal mouth of pipe in 1 both sides of T-shaped pipe refers to T-shaped pipe upper end Two relative mouths of pipe, the 1 radial direction mouth of pipe of the T-shaped pipe refer to vertical with the horizontal mouth of pipe in both sides another pipe in T-shaped pipe 1 Mouthful.In aircraft flight, air enters airborne sampling head from the side mouth of pipe of the T-shaped pipe 1, reaches T-shaped pipe 1 in air During the top of the radial direction mouth of pipe, can be by connecting getter device (such as pump) in the end of the 1 radial direction mouth of pipe of T-shaped pipe, as suction is made With, part reaches the air above the radial direction mouth of pipe and draws from the 1 radial direction mouth of pipe of T-shaped pipe, so as to carry out follow-up detection, and its remaining part Divide and the radial direction mouth of pipe is broken through from the outflow of the opposite side mouth of pipe, as ambient temperature is relatively low, can condense a large amount of in the opposite side mouth of pipe Steam.Internal diameter of the internal diameter of the side mouth of pipe less than the opposite side mouth of pipe in the horizontal mouth of pipe, you can be interpreted as under the mouth of pipe of side The upper surface at end is higher than the upper surface of opposite side mouth of pipe lower end, can so enable air-flow to be further flushed to another side pipe The interior position further from the radial direction mouth of pipe of mouth, so that the steam for condensing is difficult to fall in the radial direction mouth of pipe.Simultaneously described another Close radial direction nozzle position in side pipe mouth is conformed with 3, and the projection 3 can prevent the steam stream in the opposite side mouth of pipe Enter in the radial direction mouth of pipe.The radial direction mouth of pipe of the airborne sampling head, sampling house steward 5 and pump 6 are sequentially connected, therefore can be by adjusting Pump 6 with change sampling house steward 5 in overpressure;The piezometer 7 is arranged on sampling house steward 6, can be to sampling in house steward 5 Overpressure carry out real-time monitoring;The computer 4 is respectively connected with pump 6 and piezometer 7, in can causing piezometer 7 Pressure sensing result is fed back in computer 4, and the power of pump 6 is adjusted by computer 4 changing in sampling house steward 5 Overpressure.
According to the present invention, for the internal diameter at each end in each mouth of pipe has no particular limits, can only reach the present invention's Above-mentioned purpose.
Preferably, the side mouth of pipe is less than the internal diameter near pipe outer end near the inner internal diameter of pipe.Can so improve Air-flow velocity of the side mouth of pipe at pipe the inner, so that steam is in the inner accumulation cohesion of the pipe.
Preferably, the opposite side mouth of pipe is less than the internal diameter near pipe outer end near the inner internal diameter of pipe.Can so make The steam that the opposite side mouth of pipe is obtained near cohesion at pipe the inner flows out another test tube mouth along its outer extreme direction along the gradient.
In the preferred embodiment of the present invention, the airborne sampling head also include suction nozzle 2, wherein, it is described enter The pipe that valve 2 is fixed on the side mouth of pipe is inner.Steam can be so caused to be easier to cross the radial direction mouth of pipe, without each Mouth of pipe intersection is piled up even into the radial direction mouth of pipe.
Preferably, the suction nozzle 2 exceedes the vertical of the 1 radial direction mouth of pipe of T-shaped pipe away from the position of the inner one end of the pipe Position.
It is highly preferred that the suction nozzle 2 near the inner internal diameter of the pipe more than away from the inner internal diameter of the pipe.Namely Make the internal diameter in 2 exit of suction nozzle less, to improve the air-flow velocity in 2 exit of the suction nozzle, while part steam due to The gradient can directly be back to outer end, without falling from 2 exit of suction nozzle, so as to further improve the efficiency and matter of sampling Amount.
In accordance with the present invention it is preferred that, the sampling and monitoring device also includes some (such as 1-10) detecting instruments 8, described Some detecting instruments 8 are connected with sampling house steward 5 independently of one another.So the collection sample in sampling house steward 5 can be sent respectively Detected in entering each detecting instrument 8.
A preferred embodiment of the invention, as shown in Figures 3 and 4, is prevented from condensation of moisture and the machine for flowing backwards Carrying sampling system includes airborne sampling head, computer 4, sampling house steward 5, pump 6 and piezometer 7, and the airborne sampling head includes T-shaped Pipe 1, wherein, in the T-shaped pipe 1, the end of the horizontal mouth of pipe in both sides and the radial direction mouth of pipe is hatch frame, in the horizontal mouth of pipe Internal diameter of the internal diameter of the side mouth of pipe less than the opposite side mouth of pipe, while the close radial direction nozzle position in the opposite side mouth of pipe sets There is a projection 3, the radial direction mouth of pipe of the airborne sampling head, sampling house steward 5 and pump 6 are sequentially connected, and the piezometer 7 is arranged at sampling On house steward 6, the computer 4 is respectively connected with pump 6 and piezometer 7;The side mouth of pipe is less than near the inner internal diameter of pipe and leans on The internal diameter of nearly pipe outer end;The opposite side mouth of pipe is near the inner internal diameter of pipe less than the internal diameter near pipe outer end;It is described airborne to adopt Sample head also includes suction nozzle 2, and the pipe that the suction nozzle 2 is fixed on the side mouth of pipe is inner;The suction nozzle 2 is away from the pipe The position of inner one end exceedes the vertical position of the 1 radial direction mouth of pipe of T-shaped pipe;The suction nozzle 2 is near the inner internal diameter of the pipe More than away from the inner internal diameter of the pipe;The sampling and monitoring device also includes some detecting instruments 5, some detecting instruments 5 are connected with sampling house steward 2 independently of one another.Additionally, the direction of arrow in Fig. 3 represents the direction of air current flow, the dotted line in Fig. 4 Frame represents airborne sampling head (concrete structure figure 3 illustrates), represents outside cabin, represent in cabin on the right side of dotted line on the left of dotted line; Thick line represents device or pipeline, and fine rule represents reference indicatrix;The direction of the orientation representative signal transmission of arrow, i.e. pressure Pressure sensing result in meter 7 is fed back in computer 4, and the power of pump 6 is adjusted by computer 4 changing sampling Overpressure in house steward 5.
From figure 3, it can be seen that due to suction nozzle 2 in the direction of the air flow extended beyond the radial direction mouth of pipe, therefore work as gas Stream from suction nozzle 2 flow out when, exceeded the radial direction mouth of pipe, so as to air-flow will not be entered directly in the radial direction mouth of pipe, thus avoided Vapor occurs to condense in the radial direction mouth of pipe.
Additionally, present invention also offers the aforesaid airborne sampling system for being prevented from condensation of moisture and flowing backwards is supervised in collection The application surveyed in the outer air of aircraft cabin.
In actual use, can be possible to prevent in condensation of moisture and the airborne sampling system that flows backwards airborne adopts Sample head is arranged at aircraft optional position out of my cabin, by the radial direction mouth of pipe of airborne sampling head and the remaining part being arranged in aircraft It is connected by aforesaid connected mode, it is preferable that the direction of the air inlet is consistent with the direction of aircraft nose so that air is more square Just enter air inlet.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment Detail, the present invention range of the technology design in, various simple variants can be carried out to technical scheme, this A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can The compound mode of energy is no longer separately illustrated.
Additionally, combination in any between a variety of embodiments of the present invention, can also be carried out, as long as which is without prejudice to this The thought of invention, which should equally be considered as content disclosed in this invention.

Claims (8)

1. a kind of airborne sampling system that can change automatically sampling system pressure, it is characterised in that described to be prevented from aqueous vapor The airborne sampling system for condensing and flowing backwards includes airborne sampling head, computer (4), sampling house steward (5), pump (6) and piezometer (7), the airborne sampling head includes T-shaped pipe (1), wherein, the end of the horizontal mouth of pipe in both sides and the radial direction mouth of pipe in the T-shaped pipe (1) Portion is hatch frame, internal diameter of the internal diameter of the side mouth of pipe less than the opposite side mouth of pipe in the horizontal mouth of pipe, while described another Close radial direction nozzle position in the mouth of pipe of side is conformed with (3), the radial direction mouth of pipe of the airborne sampling head, sampling house steward (5) It is sequentially connected with pump (6), the piezometer (7) is arranged in sampling house steward (6), the computer (4) and pump (6) and piezometer (7) it is respectively connected with.
2. the airborne sampling system that sampling system pressure can be changed automatically according to claim 1, wherein, the side The mouth of pipe is near the inner internal diameter of pipe less than the internal diameter near pipe outer end.
3. the airborne sampling system that sampling system pressure can be changed automatically according to claim 1, wherein, it is described another Side pipe mouth is near the inner internal diameter of pipe less than the internal diameter near pipe outer end.
4. the airborne sampling system that sampling system pressure can be changed automatically according to claim 1, wherein, it is described airborne Sampling head also includes suction nozzle (2), wherein, the pipe that the suction nozzle (2) is fixed on the side mouth of pipe is inner.
5. the airborne sampling system that sampling system pressure can be changed automatically according to claim 4, wherein, the air inlet Mouth (2) exceedes the vertical position of T-shaped pipe (1) the radial direction mouth of pipe away from the position of the inner one end of the pipe.
6. the airborne sampling system that sampling system pressure can be changed automatically according to claim 4, wherein, the air inlet Mouth (2) is near the inner internal diameter of the pipe more than away from the inner internal diameter of the pipe.
7. the airborne sampling system that sampling system pressure can be changed automatically according to claim 1, wherein, the sampling Monitoring device also includes some detecting instruments (8), and some detecting instruments (8) are connected with sampling house steward (5) independently of one another.
8. the airborne sampling system that can change automatically sampling system pressure in claim 1-7 described in any one is in collection Application in the outer air of monitoring aircraft cabin.
CN201611243508.XA 2016-12-29 2016-12-29 Airborne sampling system capable of automatically changing pressure of sampling system and application thereof Expired - Fee Related CN106525518B (en)

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