CN109323822A - Sealant experiments of sealing performance method - Google Patents
Sealant experiments of sealing performance method Download PDFInfo
- Publication number
- CN109323822A CN109323822A CN201811409946.8A CN201811409946A CN109323822A CN 109323822 A CN109323822 A CN 109323822A CN 201811409946 A CN201811409946 A CN 201811409946A CN 109323822 A CN109323822 A CN 109323822A
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- Prior art keywords
- chamber
- sealant
- pressure gauge
- filled
- pressure
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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
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
This application provides a kind of sealant experiments of sealing performance methods, comprising: using organic glass, aluminum alloy outer cover and washs silk ribbon and builds a chamber；Using sealant leakage test case；Chamber after sealing is placed under normal temperature environment, and to the gas for being filled with the first preset pressure inside it, observes the pressure gauge being connected in chamber；If the numerical value of pressure gauge does not reduce, in the environment of chamber is placed in 80 DEG C or -55 DEG C, and to the gas for being filled with the second preset pressure inside it, pressure gauge is observed；If the numerical value of pressure gauge does not reduce, illustrate the favorable sealing property of sealant.
Description
Technical field
This application involves aircraft technology fields, specifically provide a kind of sealant experiments of sealing performance method.
Background technique
Airtight requirement due to aircraft to one-piece canopy sealing structure needs in one-piece canopy structure using novel
Organic glass and and sealant.Novel organic glass has very big difference with previous model on thickness, and novel seal gum is also
Used for the first time in the bay section, previous conventional methods comprehensively comprising the organic glass and sealant in room temperature and
Performance test under high and low temperature is unable to satisfy the performance verification of new material.
Summary of the invention
In order to solve the above-mentioned technical problem at least one, this application provides a kind of sealant experiments of sealing performance method,
It include: to use organic glass, aluminum alloy outer cover and wash silk ribbon to build a chamber；The chamber is sealed using sealant；
The chamber after sealing is placed under normal temperature environment, and to the gas for being filled with the first preset pressure inside it, observation connects
The pressure gauge being connected in the chamber；If the numerical value of the pressure gauge does not reduce, by the chamber be placed in 80 DEG C or-
In the environment of 55 DEG C, and to the gas for being filled with the second preset pressure inside it, the pressure gauge is observed；If the number of the pressure gauge
Value does not reduce, then illustrates the favorable sealing property of the sealant.
According at least one embodiment of the application, first preset pressure be 0.2 atmospheric pressure, to it inside be filled with
The gas of first preset pressure observes the pressure gauge being connected in the chamber, comprising: into the chamber after sealing
It is filled with 0.2 atmospheric pressure, the numerical value of the pressure gauge is observed after being kept for 2 minutes.
According at least one embodiment of the application, in the environment of the chamber is placed in 80 DEG C, described second is pre-
If pressure is 0.6 atmospheric pressure, to it inside be filled with the gas of the second preset pressure, observe the pressure gauge, comprising: to sealing
It is filled with 0.6 atmospheric pressure in the chamber afterwards, the numerical value of the pressure gauge is observed after being kept for 2 minutes.
According at least one embodiment of the application, in the environment of the chamber is placed in -55 DEG C, described second is pre-
If pressure is 0.6 atmospheric pressure, to it inside be filled with the gas of the second preset pressure, observe the pressure gauge, comprising: to sealing
It is filled with 0.6 atmospheric pressure in the chamber afterwards, the numerical value of the pressure gauge is observed after being kept for 2 minutes.
According at least one embodiment of the application, further includes: if the numerical value of the pressure gauge reduces, in the sealant
Suds are smeared in unconsolidated zone, while continuing to be filled with gas into the experiment casing；The position of bubble is generated according to suds
The chamber is repaired.
Aircraft integral seat bay section is converted seal box by sealant experiments of sealing performance method provided by the embodiments of the present application
Body reduces experimental scale, shortens the test period；Carry out leakage test of the sealant under room temperature and high and low temperature comprehensively,
While the comprehensive verification sealing performance of sealant, the database of sealant performance under a variety of environment is also set up, in scheme
Stage can effectively the sealing performance to one-piece canopy carry out.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of experiment casing provided by the embodiments of the present application；
Fig. 2 is the schematic diagram of experimental rig provided by the embodiments of the present application.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related application, rather than the restriction to this application.It also should be noted that in order to
Convenient for description, part relevant to the application is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 is the structural schematic diagram of experiment casing provided by the embodiments of the present application, as shown in Figure 1, chamber is by organic glass
Glass 1, aluminum alloy outer cover 3 and the rectangular configuration that silk ribbon 5 surrounds on frame 4 is washed, machine glass 1, washs silk ribbon 5 at aluminum alloy outer cover 3
And pressurising hole 2 is offered on the organic glass 1 of chamber side by sealing glue sticking between frame 4, it is used for test
Gas is filled with inside case, with the test of being sealed property.
Fig. 2 is the schematic diagram of experimental rig provided by the embodiments of the present application, as shown in Fig. 2, nitrogen cylinder 6 by hose 7 to
It is filled with gas in chamber, pressure gauge 8 and control valve 9 are provided on hose 7, pressure gauge 8 is arranged close to chamber, thus
Control valve 9 is able to detect that the size of the pressure inside chamber when closing.
Embodiments herein provide a kind of sealant experiments of sealing performance method the following steps are included:
Step 1, it using organic glass, aluminum alloy outer cover and washs silk ribbon and builds a chamber.
Step 2, using sealant leakage test case.
Step 3, the chamber after sealing is placed under normal temperature environment, and to the gas for being filled with the first preset pressure inside it
Body observes the pressure gauge being connected in chamber.
Optionally, the first preset pressure is 0.2 atmospheric pressure, and the chamber after sealing is placed under normal temperature environment, and
The nitrogen of 0.2 atmospheric pressure is filled with inside to it, whether the numerical value for observing pressure gauge reduces, if the numerical value of pressure gauge reduces,
Then indicate that gas leakage, the poor sealing performance under normal temperature environment occur for chamber；If the numerical value of pressure gauge does not reduce, then it represents that examination
Gas leakage does not occur for tryoff, the favorable sealing property under normal temperature environment.
Step 4, if the numerical value of pressure gauge does not reduce, in the environment of chamber is placed in 80 DEG C or -55 DEG C, and to its
Inside is filled with the gas of the second preset pressure, observes the pressure gauge.
Optionally, the second preset pressure is 0.6 atmospheric pressure, in the environment of the chamber after sealing is placed in 80 DEG C,
The nitrogen of 0.6 atmospheric pressure is filled with inside to it, whether the numerical value that pressure gauge is observed after being kept for 2 minutes reduces, if pressure gauge
Numerical value reduce, then it represents that gas leakage, in a high temperauture environment poor sealing performance occur for chamber；If the numerical value of pressure gauge does not drop
It is low, then it represents that gas leakage does not occur for chamber, in a high temperauture environment favorable sealing property.
Optionally, in the environment of the chamber after sealing being placed in -55 DEG C, to it inside be filled with 0.6 atmospheric pressure
Nitrogen, whether the numerical value that pressure gauge is observed after being kept for 2 minutes reduces, if the numerical value of pressure gauge reduces, then it represents that chamber hair
Raw gas leakage, poor sealing performance at low ambient temperatures；If the numerical value of pressure gauge does not reduce, then it represents that chamber is not leaked
Gas, favorable sealing property at low ambient temperatures.
Step 5, if the numerical value of pressure gauge does not reduce, illustrate the favorable sealing property of sealant.
In some embodiments, this method further include:
Step 6, if the numerical value of pressure gauge reduces, suds are smeared in sealant unconsolidated zone, while continuing to chamber
Gas is filled in body.
Optionally, the pressure for the gas being filled with is identical as the pressure of gas before its gas leakage, for example, what is be filled with before gas leakage is
The nitrogen of 0.2 atmospheric pressure continues the nitrogen that 0.2 atmospheric pressure is filled with to the inside of chamber after smearing suds；Example again
Such as, what is be filled with before gas leakage is the nitrogen of 0.6 atmospheric pressure, after smearing suds, continues to be filled with to the inside of chamber 0.6 big
The nitrogen of air pressure.
Step 7, chamber is repaired according to the position that suds generate bubble.
Optionally, chamber is repaired, can continues to smear sealant reinforcement sealing effect in air leak position, it can also
To replace another sealant to being experimentally sealed and repeating the above steps, test is re-started.
So far, it has been combined preferred embodiment shown in the drawings and describes the technical solution of the application, still, this field
Technical staff is it is easily understood that the protection scope of the application is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of application, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement is fallen within the protection scope of the application.
Claims (5)
1. a kind of sealant experiments of sealing performance method characterized by comprising
Using organic glass, aluminum alloy outer cover and washs silk ribbon and build a chamber；
The chamber is sealed using sealant；
The chamber after sealing is placed under normal temperature environment, and to the gas for being filled with the first preset pressure inside it, is seen
Examine the pressure gauge being connected in the chamber；
If the numerical value of the pressure gauge does not reduce, in the environment of the chamber is placed in 80 DEG C or -55 DEG C, and into it
Portion is filled with the gas of the second preset pressure, observes the pressure gauge；
If the numerical value of the pressure gauge does not reduce, illustrate the favorable sealing property of the sealant.
2. sealant experiments of sealing performance method according to claim 1, which is characterized in that first preset pressure is
0.2 atmospheric pressure,
It is filled with the gas of the first preset pressure inside to it, observes the pressure gauge being connected in the chamber, comprising:
It is filled with 0.2 atmospheric pressure into the chamber after sealing, the numerical value of the pressure gauge is observed after being kept for 2 minutes.
3. sealant experiments of sealing performance method according to claim 1, which is characterized in that the chamber to be placed in
In the environment of 80 DEG C, second preset pressure is 0.6 atmospheric pressure,
It is filled with the gas of the second preset pressure inside to it, observes the pressure gauge, comprising:
It is filled with 0.6 atmospheric pressure into the chamber after sealing, the numerical value of the pressure gauge is observed after being kept for 2 minutes.
4. sealant experiments of sealing performance method according to claim 1, which is characterized in that place the chamber
In the environment of -55 DEG C, second preset pressure is 0.6 atmospheric pressure,
It is filled with the gas of the second preset pressure inside to it, observes the pressure gauge, comprising:
It is filled with 0.6 atmospheric pressure into the chamber after sealing, the numerical value of the pressure gauge is observed after being kept for 2 minutes.
5. sealant experiments of sealing performance method according to claim 1, which is characterized in that further include:
If the numerical value of the pressure gauge reduces, suds are smeared in the sealant unconsolidated zone, while continuing to the test
Gas is filled in cabinet；
The chamber is repaired according to the position that suds generate bubble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409946.8A CN109323822A (en) | 2018-11-23 | 2018-11-23 | Sealant experiments of sealing performance method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409946.8A CN109323822A (en) | 2018-11-23 | 2018-11-23 | Sealant experiments of sealing performance method |
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| Publication Number | Publication Date |
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| CN109323822A true CN109323822A (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811409946.8A Pending CN109323822A (en) | 2018-11-23 | 2018-11-23 | Sealant experiments of sealing performance method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113358296A (en) * | 2021-05-31 | 2021-09-07 | 中车青岛四方机车车辆股份有限公司 | Method for detecting sample tightness and railway vehicle |
| CN114001873A (en) * | 2021-10-18 | 2022-02-01 | 中航通飞华南飞机工业有限公司 | Air tightness inspection integrated equipment and detection method for aircraft anti-icing and rain-removing system |
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Cited By (2)
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| CN113358296A (en) * | 2021-05-31 | 2021-09-07 | 中车青岛四方机车车辆股份有限公司 | Method for detecting sample tightness and railway vehicle |
| CN114001873A (en) * | 2021-10-18 | 2022-02-01 | 中航通飞华南飞机工业有限公司 | Air tightness inspection integrated equipment and detection method for aircraft anti-icing and rain-removing system |
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Application publication date: 20190212 |