CN107655639A - Released gas rate detection means - Google Patents
Released gas rate detection means Download PDFInfo
- Publication number
- CN107655639A CN107655639A CN201710781086.XA CN201710781086A CN107655639A CN 107655639 A CN107655639 A CN 107655639A CN 201710781086 A CN201710781086 A CN 201710781086A CN 107655639 A CN107655639 A CN 107655639A
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- Prior art keywords
- detection means
- rate detection
- elastic membrane
- gas rate
- released gas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The disclosure provides a kind of released gas rate detection means, and the released gas rate detection means includes housing, elastic membrane, ranging component and processing component.Housing has first end and the second end of insertion；Elastic membrane is sealedly attached to the inwall of housing, and can under the impact of gas elastic deformation；Ranging component is located at first end and is right against elastic membrane, for detecting the distance between elastic membrane and ranging component；Processing component is outside housing, for determining the deflection of elastic membrane according to distance, and determines the slip of gas according to this.
Description
Technical field
This disclosure relates to technical field of aerospace, in particular to a kind of released gas rate detection means.
Background technology
With the development of aeronautical technology, requirement of the people to the security of aircraft also more and more higher.Wherein, the sealing of cabin
Effect is directly related to the security of aircraft.In the hatch door position of cabin, it usually needs hatch door seal is set, in flight course
In while play sealing effectiveness, also to ensure that hatch door can be turned off or on swimmingly.It is generally right in order to ensure flight safety
The sealing of hatch door is detected, and determines leak position and slip, to judge leakiness.
In the prior art, can be used special leak test plant and show leakage material judge under vacuum conditions small opening position and
Slip, but occupied ground is larger, and cost is higher, and shows that leakage material may pollute to environment.Can also be according to leakage
The sound that place is sent, artificial judgment leak position and the scope for rule of thumb substantially judging slip, but operating efficiency it is relatively low and
The numerical value of slip can not accurately be detected.Further, it is also possible to be detected by special supersonic reflectoscope, but can only detect
Go out to reveal position, it is difficult to determine slip.
It should be noted that information is only used for strengthening the reason to the background of the disclosure disclosed in above-mentioned background section
Solution, therefore can include not forming the information to prior art known to persons of ordinary skill in the art.
The content of the invention
The purpose of the disclosure is to provide a kind of released gas rate detection means, so at least overcome to a certain extent by
One or more problem caused by the limitation of correlation technique and defect.
According to an aspect of this disclosure, there is provided a kind of released gas rate detection means, including：
Housing, there is first end and the second end of insertion；
Elastic membrane, the inwall of the housing is sealedly attached to, and elastic deformation can occur under the impact of gas；
Ranging component, located at the first end and the elastic membrane is right against, for detecting the elastic membrane and the survey
Away from the distance between component；
Processing component, outside the housing, for determining the deflection of the elastic membrane according to the distance, and according to this
Determine the slip of gas.
In a kind of exemplary embodiment of the disclosure, the released gas rate detection means also includes：
Sealing ring, the end face at second end is fixed on, and the sealing ring is elastic material.
In a kind of exemplary embodiment of the disclosure, the side wall at second end offers relief hole.
In a kind of exemplary embodiment of the disclosure, the released gas rate detection means also includes：
Display module, it is connected outside the housing and with the processing component, for showing the slip.
In a kind of exemplary embodiment of the disclosure, the material of the elastic membrane is latex.
In a kind of exemplary embodiment of the disclosure, the material of the elastic membrane is natural emulsion, and its thickness is
0.04mm, and the elastic membrane and the distance of the end face at the second end are 43mm, determining the slip of gas includes：
The slip is calculated according to the deflection and preset formula, the preset formula is：
Wherein, y is deflection, and x is slip.
In a kind of exemplary embodiment of the disclosure, second end is provided with radially inwardly extending linking arm, institute
State ranging component and be fixed on the linking arm.
In a kind of exemplary embodiment of the disclosure, the ranging component is right against the center of the elastic membrane.
In a kind of exemplary embodiment of the disclosure, the ranging component is distance measuring sensor.
In a kind of exemplary embodiment of the disclosure, the housing exterior walls are provided with mounting box, the processing component and institute
Display module is stated in the mounting box.
The released gas rate detection means of the disclosure, when in use, the second end of housing can be fitted in position to be measured；If
There is leakage in the position to be measured, the air-flow of leakage can enter housing and impact elasticity film from the second end, make elastic membrane that elasticity occur
Deformation, the distance between elastic membrane and ranging component change with the deformation of elastic membrane；Ranging component can detect the distance in real time, and
Determine the deflection of elastic membrane in real time according to the distance by processing component, then, the leakage of gas can be determined according to the deflection
Rate.So as to while accuracy of detection is ensured, make structure simpler, be easy to carry, cost is relatively low, and easily operated.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.It should be evident that drawings in the following description are only the disclosure
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the schematic diagram of the released gas rate detection means of disclosure example embodiment.
Fig. 2 is the top view of the released gas rate detection means of disclosure example embodiment.
Fig. 3 is the front view of the released gas rate detection means of disclosure example embodiment.
Fig. 4 is the theory diagram of the released gas rate detection means of disclosure example embodiment.
Fig. 5 is the matched curve figure in disclosure example embodiment.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical accompanying drawing in figure
Mark represents same or similar structure, thus will omit their detailed description.
Although the term of relativity, such as " on ", " under " are used in this specification come describe icon component for
The relativeness of another component, but these terms are used in this specification merely for convenient, for example, with reference to the accompanying drawings described in
The direction of example.Be appreciated that, if making it turn upside down the upset of the device of icon, describe " on " component general
Can turn into " under " component.The term of other relativities.When certain structure other structures " on " when, it is possible to refer to certain structure
It is integrally formed in other structures, or refers to certain structure " direct " and be arranged in other structures, or refers to certain structure and pass through another structure
" indirect " is arranged in other structures.
In the claims, term "one", " one ", "the", " described " and " at least one " be representing to have one
Individual or multiple key element/parts/etc.；Term " comprising " and " having " to represent the open meaning being included and
Refer to the key element except listing/part/also may be present in addition to waiting other key element/part/etc.；Term " first ",
" second " etc. only uses as mark, is not the quantity limitation to its object.
Disclosure example embodiment provides a kind of released gas rate detection means, as shown in Figure 1 to 4, this implementation
The released gas rate detection means of mode can include housing 1, elastic membrane 2, ranging component 3 and processing component 4.
In the present embodiment, the shape of housing 1 can be cylinder, cuboid, but not limited to this, can also be other
Shape.Housing 1 can have first end and the second end, and the end face of first end can be parallel to the end face at the second end, and housing 1 can be provided with
Penetrate the through hole at first end and the second end.When in use, the end face at the second end of housing 1 can be placed on position to be measured, first
End is then away from position to be measured.The radial dimension of housing 1 can be more than the gap of hatch door and nacelle.The material of housing 1 can be metal,
Plastics etc., do not do particular determination herein.
The first end of housing 1 can be provided with linking arm 101, and one end of the linking arm 101 is located at the end face of first end, the other end
For free end, the free end can extend along being radially orientated in housing 1 for housing 1.Linking arm 101 can pass through bonding, clamping or profit
The mode such as it is connected with to be connected with first end, certainly, linking arm 101 and housing 1 can also be integral structures.
In the present embodiment, the shape and size of elastic membrane 2 can match with the inwall of housing 1, can put elastic membrane 2
In in housing 1, and the periphery of elastic membrane 2 can be tightly connected with the inwall of housing 1 by the mode such as Nian Jie, so as to by elastic membrane 2
It is fixed in housing 1.The inner space of housing can be divided into two parts by the elastic membrane 2, and above-mentioned first end and the second end can
It is located at the both sides of elastic membrane 2 respectively, the spacing of the end face at the end of elastic membrane 2 and second can be 43mm, i.e., do not become in elastic membrane 2
During shape, the spacing of itself and the end face at the second end is can be 43mm.But be not limited, can also closer to or it is farther.Do not occurring
In the case of deformation, elastic membrane 2 can be parallel to the end face of first end and the end face at the second end.The material of elastic membrane 2 can be breast
Glue, such as natural emulsion, synthetic latex or artificial latex, its thickness can be 0.04mm, but not limited to this, thickness can also be more
It is big or smaller.In the case where entering the impact of air-flow at the second end elastic deformation can occur for elastic membrane 2, and the deflection of elastic membrane 2 can
Change with the change of air-flow；When not having gas shock, elastic membrane 2 can restore to the original state.Certainly, the material of elastic membrane 2 is also
It can be other elastomeric materials, will not enumerate herein.
It should be noted that if air-flow enters first end, also can impact elasticity film 2 bring it about elastic deformation.
In the present embodiment, ranging component 3 can be distance measuring sensor, for example, laser range sensor, ultrasound
Away from sensor or infrared distance sensor or it is other can be with the sensor of detecting distance.Ranging component 3 can be located at housing
1 first end, and can be by bonding, clamping or the free end for being fixed on using modes such as bolt connections linking arm 101, and ranging
Component 3 can be right against the center of elastic membrane 2, or ranging component 3 can also be right against the other positions of elastic membrane 2.Ranging component 3
Distance between elastic membrane 2 can be ranging component 3 with being right against the distance between region of ranging component 3 in elastic membrane 2.From
And the distance between elastic membrane 2 and ranging component 3 can be detected in real time by ranging component 3.The distance can be with the change of elastic membrane 2
The change of shape amount and change, in specific words, this then illustrates that the deflection of elastic membrane 2 is bigger apart from smaller.
It should be noted that during according to laser range sensor, above-mentioned elastic membrane 2 can use nontransparent elastic material
Material, or transparent elastomeric material is used, but the reflecting layer of reflective material can be coated with the elastic membrane 2.So as to avoid because swashing
Light can not be reflected and be led to not the distance for detecting elastic membrane 2 and ranging component 3 by elastic membrane 2.
In the present embodiment, processing component 4 can be single-chip microcomputer, but not limited to this, can also use it is other have deposit
Storage and the device of computing function.Processing component 4 can be located at outside housing 1, can receive the distance that ranging component 3 is sent, and according to
The distance received determines the deflection of elastic membrane 2 in real time, and the slip of gas is determined further according to the deflection.
The deflection can be equal to the absolute value of above-mentioned distance and the difference of a preset value, and the preset value can be elastic membrane
2 when not deforming, and the distance between ranging component 3 and elastic membrane 2, the preset value can in advance be measured and be stored in processing component 4.
Processing component 4 can calculate the absolute value of the distance received and the difference of preset value in real time, so as to determine elastic membrane 2 in real time
Deflection.Certainly, deflection can also determine otherwise, will not be described in detail herein.
The slip of gas can be calculated according to above-mentioned deflection and a preset formula, in order to determine the preset formula
Method, first the released gas rate detection means of present embodiment can be demarcated.
For example, detection mode of the prior art detection slip can be used, in this, as standard leak rate；Together
When, it can under equal conditions be detected by the released gas rate detection means of present embodiment, determine the released gas rate
The deflection of the elastic membrane 2 of detection means；The material of elastic membrane 2 in the released gas rate detection means can be natural emulsion,
Its thickness can be 0.04mm, and the distance of the end face at the end of elastic membrane 2 and second is 43mm, the end face at the second end is fitted in be measured
Behind the surface of position, elastic membrane 2 and the distance on the surface of position to be measured are also 43mm.Then, as shown in figure 5, deformation can be established
Amount and the corresponding relation of standard leak rate, and data fitting is carried out, obtain matched curve；Finally, can be determined according to matched curve
The function of the matched curve, the function can be can be used as to above-mentioned preset formula.
The preset formula can be：
Wherein, y represents deflection, and x represents slip.In specific words, the deflection y that processing component 4 will can determine in real time
Bring into above-mentioned preset formula, and calculate slip x.
If it should be noted that change material, thickness or its spacing with the end face at the second end of elastic membrane 2, through upper
The preset formula drawn after calibration process is stated it can also happen that changing, but still belong to and determine slip according to deflection, herein
It will not enumerate.
In the present embodiment, released gas rate detection means can also include sealing ring 5, its material can be rubber or
Other flexible materials of person.The shape of sealing ring 5 can be identical with the second end of housing 1.The internal diameter of sealing ring 5 can be not more than
The internal diameter at the second end, and the external diameter of sealing ring 5 can be not less than the external diameter at the second end, so as to which the end face at the second end is completely covered；When
So, the internal diameter of sealing ring 5 is also greater than the internal diameter at the second end, and the external diameter of sealing ring 5 is also smaller than the external diameter at the second end, so as to
An annular region is covered on the end face at the second end.
Sealing ring 5 is securable to the end face at the second end, for example：The side that sealing ring can be passed through by bonding by adhesive
Formula is fixed on the end face at the second end；Or groove can be provided with the end face at the second end, this is convex formed with fin on sealing ring 5
Rib can be sticked in groove, so as to which sealing ring 5 to be fixed on to the end face at the second end by way of clamping；In addition, it can also use
Internal diameter is less than the internal diameter at the second end, and external diameter is more than the sealing ring 5 of the external diameter at the second end, and neck can be provided with the sealing ring 5, the
The end face at two ends can be caught in the neck, so as to which sealing ring 5 can also be fixed on to the end face of second segment.Certainly, sealing ring 5 is consolidated
Other modes can also be used due to the end face at the second end, will not be described in detail herein.
When being detected, sealing ring 5 can contact with position to be measured, because sealing ring 5 is flexible, be advantageous to more step up
Close fitting position to be measured, prevent gap between housing 1 and position to be measured being present and cause gas leakage.
In the present embodiment, the side wall at the second end of housing 1 can open up relief hole 102, and the shape of relief hole 102 can be with
It is circular, its diameter can be 0.1 times of the axial length of housing 1, but be not limited, and relief hole 102 can also use other
Shape, its size can also be bigger or smaller.Can be by the inside and outside connection of housing 1 by the relief hole 102, fraction can be from
Relief hole 102 is discharged, and when leakage rate is excessive, can avoid pressure is excessive from causing elastic membrane 2 to rupture.
In the present embodiment, released gas rate detection means can also include display module 6, and the display module 6 can be with
It is liquid crystal display, it is securable to the outer wall of housing 1, and is connected with processing component 4, and processing component 4 can control display module 6
The numerical value of slip is shown, so that operating personnel are read out data.Certainly, display module 6, which can also be other, has display
The part of function, do not enumerating herein.
In the present embodiment, the outer wall of housing 1 can be provided with mounting box 7, and the mounting box 7 can be cuboid, cylinder etc.
Shape.Processing component 4 and display module 6 mode such as can be bolted and be fixed in mounting box 7, can be opened on mounting box 7
Provided with observation panel, to observe the display content of display module 6.Mounting box 7 can pass through bonding, clamping or utilization bolt connection etc.
Mode is fixedly connected with housing 1；Or mounting box 7 and housing 1 can be integral structures.
For example, mounting box 7 can include box body and cover plate, wherein：The shape of the end face of box body can be with housing 1
Outer wall matches, and the end face can be fitted in the outer wall of housing 1, and is adhered to housing 1, and box body is fixed on into the outer of housing 1
Wall.Meanwhile box body can have an open end, above-mentioned processing component 4 and display module 6 are securable in box body.Cover plate can
Cover in the open end and with box body clamping, so that box body be closed, form mounting box 7, can be provided with cover plate and correspond to display
The observation panel of component 6, to observe display module 6.
In the present embodiment, released gas rate detection means can also include power supply module 8, and the power supply module 8 also may be used
In above-mentioned mounting box 7, and it is connected simultaneously with processing component 4, display module 6 and ranging component 3, to provide electric energy.Should
Power supply module 8 can including battery etc. part, as long as power supply can be used as.
In the present embodiment, released gas rate detection means can also include alarm and warning light, the alarm and
Warning light can be connected with above-mentioned processing component 4, and processing component 4 can will leak out rate compared with a default higher limit,
When slip is more than the higher limit value, processing component 4 can control the alarm to send alarm sound, and control warning light to light.Should
Alarm can be buzzer etc., and warning light can be LED etc..
The released gas rate detection means of disclosure example embodiment, when in use, the second end of housing 1 can be bonded
In position to be measured；If the position to be measured has leakage, the air-flow of leakage can enter housing 1 and impact elasticity film 2 from the second end, make
Elastic deformation occurs for elastic membrane 2, and the distance between elastic membrane 2 and ranging component 3 changes with the deformation of elastic membrane 2；Ranging component 3
The distance can be detected in real time, and determines the deflection of elastic membrane 2 in real time according to the distance by processing component 4, and according to the deformation
Amount determines the slip of gas.So as to while accuracy of detection is ensured, make structure simpler, reduce cost, be easy to take
Band, and it is easily operated.
In specific words, when the hatch door to aircraft detects, only the second end of housing 1 need to be fitted in hatch door and cabin
Seam crossing, along the outer rim mobile shell 1 of hatch door, you can detect each position with the presence or absence of leakage and slip.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice invention disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations follow the general principle of the disclosure and including the undocumented common knowledges in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by appended
Claim is pointed out.
Claims (10)
- A kind of 1. released gas rate detection means, it is characterised in that including：Housing, there is first end and the second end of insertion；Elastic membrane, the inwall of the housing is sealedly attached to, and elastic deformation can occur under the impact of gas；Ranging component, located at the first end and the elastic membrane is right against, for detecting the elastic membrane and the ranging group The distance between part；Processing component, outside the housing, for determining the deflection of the elastic membrane according to the distance, and determine according to this The slip of gas.
- 2. released gas rate detection means according to claim 1, it is characterised in that the released gas rate detection means Also include：Sealing ring, the end face at second end is fixed on, and the sealing ring is elastic material.
- 3. released gas rate detection means according to claim 1, it is characterised in that the side wall at second end offers Relief hole.
- 4. released gas rate detection means according to claim 1, it is characterised in that the released gas rate detection means Also include：Display module, it is connected outside the housing and with the processing component, for showing the slip.
- 5. released gas rate detection means according to claim 1, it is characterised in that the material of the elastic membrane is breast Glue.
- 6. released gas rate detection means according to claim 5, it is characterised in that the material of the elastic membrane is natural Latex, its thickness is 0.04mm, and the elastic membrane and the distance of the end face at the second end are 43mm, determine the slip bag of gas Include：The slip is calculated according to the deflection and preset formula, the preset formula is：<mrow> <mi>y</mi> <mo>=</mo> <mn>2.0261</mn> <mo>-</mo> <mfrac> <mn>1.9356</mn> <mrow> <mn>1</mn> <mo>+</mo> <msup> <mrow> <mo>(</mo> <mfrac> <mi>x</mi> <mn>0.9667</mn> </mfrac> <mo>)</mo> </mrow> <mn>2.8639</mn> </msup> </mrow> </mfrac> <mo>;</mo> </mrow>Wherein, y is deflection, and x is slip.
- 7. the released gas rate detection means according to any one of claim 1~6, it is characterised in that second end is set There is radially inwardly extending linking arm, the ranging component is fixed on the linking arm.
- 8. released gas rate detection means according to claim 7, it is characterised in that the ranging component is right against described The center of elastic membrane.
- 9. the released gas rate detection means according to any one of claim 1~6, it is characterised in that the ranging component For distance measuring sensor.
- 10. released gas rate detection means according to claim 4, it is characterised in that the housing exterior walls are provided with installation Box, the processing component and the display module are in the mounting box.
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| CN201710781086.XA CN107655639A (en) | 2017-09-01 | 2017-09-01 | Released gas rate detection means |
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| CN111412869A (en) * | 2020-04-17 | 2020-07-14 | 大连理工大学 | Detection device and method for crack size of pressure-bearing shell wall based on gas leakage rate measurement |
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| CN111412869B (en) * | 2020-04-17 | 2021-04-20 | 大连理工大学 | Detection device and method for crack size of pressure-bearing shell wall based on gas leakage rate measurement |
| CN112360434A (en) * | 2020-12-08 | 2021-02-12 | 中国石油天然气股份有限公司 | Method for judging and identifying water-resisting oil production effect |
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