CN108181096A - A kind of accelerated aging test method and apparatus of O-ring seal - Google Patents
A kind of accelerated aging test method and apparatus of O-ring seal Download PDFInfo
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- CN108181096A CN108181096A CN201711127124.6A CN201711127124A CN108181096A CN 108181096 A CN108181096 A CN 108181096A CN 201711127124 A CN201711127124 A CN 201711127124A CN 108181096 A CN108181096 A CN 108181096A
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- ring seal
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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
- G01M13/00—Testing of machine parts
- G01M13/005—Sealing rings
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Abstract
The present invention provides a kind of accelerated aging test method and apparatus of O-ring seal, the O-ring seal being first opposite in compression tooling is compressed, then compression tooling is positioned in high-low temperature test chamber and carries out accelerated aging test, the service life of O-ring seal is finally determined according to the height of O-ring seal after accelerated aging test.Technical solution provided by the invention measures the height after the elemental height of O-ring seal and O-ring seal accelerated aging test by vernier caliper or calibrator, it is accurate to 0.01mm, and the compression set of O-ring seal is calculated according to the height after the elemental height of O-ring seal and O-ring seal accelerated aging test, and then the service life of O-ring seal is determined according to the compression set of O-ring seal, improve the accuracy of service life；Technical solution provided by the invention improves test efficiency, saves the time, and entire experiment process is simple and practicable.
Description
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of accelerated aging test method of O-ring seal and
Device.
Background technology
O-ring seal is the belt rubber seal for having circular cross-section, is mainly used for mechanical part in static conditions
Under prevent the leakage of liquids and gases medium, O-ring seal can also be used as the dynamic of axially reciprocating and low-speed rotation
Sealing element according to different conditions, can select different materials to be adapted therewith respectively.
O-ring seal will select heavy in section O-ring, in the case of identical gap, O-shaped sealing as possible when usually selecting
The volume that circle is squeezed into gap should be less than its maximum permissible value being squeezed into.O-ring seal is a kind of two-way function sealing member
Part, the axially or radially initial compression of aspect during installation assign the initial sealing ability of O-ring seal itself.By system pressure
And the sealing force generated synthesizes total sealing force with initial sealing power, it is improved with the raising of system pressure.O-ring seal exists
Static seal occasion, it is shown that prominent effect.However, in dynamic appropriate occasion, O-ring seal is also often applied, but it
It is limited by the speed at sealing and pressure.
It is specifically that O-ring seal directly is positioned over high-low temperature test chamber that O-ring seal, which carries out accelerated aging test, at present
In, after different time, take out O-ring seal and observe or into the experiment whether line justification O-ring seal fails, it
After record corresponding data.But due to there was only temperature in experiment as variable, although can be to O-ring seal using above-mentioned experiment
Service life predicted, but prediction result accuracy is not high.
Invention content
In order to overcome the shortcomings of that the prediction result accuracy of the above-mentioned service life of O-ring seal in the prior art is not high, this
Invention provides a kind of accelerated aging test method and apparatus of O-ring seal, be first opposite to O-ring seal in compression tooling into
Compression tooling, is then positioned in high-low temperature test chamber and carries out accelerated aging test, finally tried according to accelerated ageing by row compression
The height for testing rear O-ring seal determines the service life of O-ring seal, is finally completed the accelerated aging test of O-ring seal.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that：
The present invention provides a kind of accelerated aging test method of O-ring seal, including：
The O-ring seal being opposite in compression tooling is compressed；
Compression tooling is positioned in high-low temperature test chamber and carries out accelerated aging test；
The service life of O-ring seal is determined according to the height of O-ring seal after accelerated aging test.
Before the O-ring seal being opposite in compression tooling is compressed, including：
The elemental height of O-ring seal is measured by vernier caliper or calibrator.
The compression tooling includes limiter, nut, bolt and at least two laminates；
Between two adjacent laminates, the limiter is sleeved on bolt the O-ring seal, and different pressing plates pass through
Nuts and bolt is fixed, and gasket is equipped between the nut and pressing plate and between bolt and pressing plate.
The number of the limiter is equal with bolt number or is the integral multiple of bolt number.
The surface of the pressing plate is coated with lubricant, and the pressing plate is using stainless steel plate or the steel plate of chromium plating, the lubrication
Agent uses talcum powder or methyl-silicone oil.
The O-ring seal being opposite in compression tooling carries out compression and includes：
By screw bolt and nut by the high compression of O-ring seal to identical with the height of limiter, and the process compressed
Middle O-ring seal is not contacted with limiter.
It is described by compression tooling be positioned in high-low temperature test chamber carry out accelerated aging test include：
When high-low temperature test chamber air temperature reaches test temperature, the compression tooling equipped with O-ring seal is put into
In high-low temperature test chamber；
After test period, compression tooling is taken out, and place it on plank from high-low temperature test chamber, in environment
At a temperature of place at least 30 minutes；
The height of O-ring seal after accelerated aging test is measured with vernier caliper or calibrator.
Minimum 55 DEG C of the test temperature, the test period is at least for for 24 hours, and test period is 24 integral multiple.
The height according to O-ring seal after accelerated aging test determines that the service life of O-ring seal includes：
Water pressure resistance experiment is carried out to O-ring seal, if O-ring seal leak, shows that O-ring seal fails；It is if O-shaped close
The non-leak of seal, O-ring seal is re-applied in compression tooling, and by compression tooling put back in high-low temperature test chamber again into
Accelerated aging test at a temperature of row identical test, and water pressure resistance experiment is carried out again, until O-ring seal fails due to leak
Until；
The service life of O-ring seal is calculated as follows according to the height of O-ring seal after accelerated aging test：
Wherein, τ represents the service life of O-ring seal；A represents empirical, and 0 ＜ a≤1；B represents test constant；K
Represent aging speed coefficient, unit 1/h；C represents the compression set of O-ring seal, and C=(h1-h0)/(h0-hs)
× 100, wherein h0Represent the elemental height of O-ring seal, h1The height of O-ring seal, h after expression accelerated aging testsIt represents
The height of limiter, h0、h1And hsUnit be mm.
The present invention provides a kind of accelerated aging tester of O-ring seal, including：
Compression module, the O-ring seal for being opposite in compression tooling are compressed；
Tentative module carries out accelerated aging test for compression tooling to be positioned in high-low temperature test chamber；
Determining module, for determining the use longevity of O-ring seal according to the height of O-ring seal after accelerated aging test
Life.
Described device further includes measurement module, and the measurement module is used to measure the elemental height of O-ring seal；
The measurement module uses vernier caliper or calibrator.
The compression tooling includes limiter, nut, bolt and at least two laminates；
Between two adjacent laminates, the limiter is sleeved on bolt the O-ring seal, and different pressing plates pass through
Nuts and bolt is fixed, and gasket is equipped between the nut and pressing plate and between bolt and pressing plate.
The number of the limiter is equal with bolt number or is the integral multiple of bolt number.
The surface of the pressing plate is coated with lubricant, and the pressing plate is using stainless steel plate or the steel plate of chromium plating, the lubrication
Agent uses talcum powder or methyl-silicone oil.
The compression module is specifically used for：
By screw bolt and nut by the high compression of O-ring seal to identical with the height of limiter, and the process compressed
Middle O-ring seal is not contacted with limiter.
The tentative module is specifically used for：
When high-low temperature test chamber air temperature reaches test temperature, the compression tooling equipped with O-ring seal is put into
In high-low temperature test chamber；
After test period, compression tooling is taken out, and place it on plank from high-low temperature test chamber, in environment
At a temperature of place at least 30 minutes；
The height of O-ring seal after accelerated aging test is measured with vernier caliper or calibrator.
Minimum 55 DEG C of the test temperature, the test period is at least for for 24 hours, and test period is 24 integral multiple.
The determining module is specifically used for：
Water pressure resistance experiment is carried out to O-ring seal, if O-ring seal leak, shows that O-ring seal fails；It is if O-shaped close
The non-leak of seal, O-ring seal is re-applied in compression tooling, and by compression tooling put back in high-low temperature test chamber again into
Accelerated aging test at a temperature of row identical test, and water pressure resistance experiment is carried out again, until O-ring seal fails due to leak
Until；
The service life of O-ring seal is calculated as follows according to the height of O-ring seal after accelerated aging test：
Wherein, τ represents the service life of O-ring seal；A represents empirical, and 0 ＜ a≤1；B represents test constant；K
Represent aging speed coefficient, unit 1/h；C represents the compression set of O-ring seal, and C=(h1-h0)/(h0-hs)
× 100, wherein h0Represent the elemental height of O-ring seal, h1The height of O-ring seal, h after expression accelerated aging testsIt represents
The height of limiter, h0、h1And hsUnit be mm.
Compared with the immediate prior art, technical solution provided by the invention has the advantages that：
In the accelerated aging test method of O-ring seal provided by the invention, the O-shaped sealing that is first opposite in compression tooling
Circle is compressed, and then compression tooling is positioned in high-low temperature test chamber and carries out accelerated aging test, finally old according to accelerating
The height for changing O-ring seal after testing determines the service life of O-ring seal, realizes the accelerated aging test to O-ring seal；
The accelerated aging tester of O-ring seal provided by the invention includes O-shaped in compression tooling for being opposite to
Compression module that sealing ring is compressed carries out accelerated aging test for compression tooling to be positioned in high-low temperature test chamber
Tentative module and for determining the service life of O-ring seal according to the height of O-ring seal after accelerated aging test really
Cover half block finally obtains the service life of two li of O-ring seals, realizes the accelerated aging test to O-ring seal；
Technical solution provided by the invention measures the elemental height of O-ring seal and O-shaped by vernier caliper or calibrator
Height after sealing ring accelerated aging test is accurate to 0.01mm, and according to the elemental height and O-ring seal of O-ring seal
Height after accelerated aging test calculates the compression set of O-ring seal, and then is permanently become according to the compression of O-ring seal
Shape determines the service life of O-ring seal, improves the accuracy of service life；
Technical solution provided by the invention improves for O-ring seal accelerated aging test of the prior art
Test efficiency saves the time, and entire experiment process is simple and practicable.
Description of the drawings
Fig. 1 is the accelerated aging test method flow diagram of O-ring seal in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
For water-cooling system in converter valve as auxiliary system most important in DC transmission engineering, its normal operation is to change
The guarantee of valve reliability service is flowed, if water-cooling system breaks down (out of service or generation leak), can not only damage converter valve,
Can also the entire DC transmission system of serious threat stable operation.
Water-cooling system mainly includes water pipe, radiator, connector etc., it is also necessary to and it uses a large amount of O-ring seal and is sealed,
The reliability of water-cooling system and the reliability of O sealing rings are closely related, and the service life of O-ring seal largely determines
The reliability of water-cooling system and then the service life for influencing converter valve, since O-ring seal is using rubber material, the service life is very
The influence of pressure and temperature is depended in big degree.In the operational process of converter valve many decades, O-ring seal for a long time by
To the effect of mechanical stress, thermal stress iso-stress.Accelerated life test is to study the important method of integrity problem, is not being changed
Under the premise of becoming product fault mechanism, proof stress is improved, accelerates the crashed process of product, can effectively shorten test period, saved
About cost.
An embodiment of the present invention provides a kind of accelerated aging test method of O-ring seal, which is mainly used for
In the water-cooling system of converter valve, the accelerated aging test method particular flow sheet of O-ring seal provided in an embodiment of the present invention is such as
Shown in Fig. 1, following steps are specifically included：
S101：The O-ring seal being opposite in compression tooling is compressed；
S102：Compression tooling is positioned in high-low temperature test chamber and carries out accelerated aging test；
S103：The service life of O-ring seal is determined according to the height of O-ring seal after accelerated aging test.
Before the O-ring seal in being opposite to compression tooling is compressed, need to survey by vernier caliper or calibrator
The elemental height of O-ring seal is measured, the elemental height of O-ring seal is denoted as h0, unit mm.
In S101, before the O-ring seal that is opposite in compression tooling is compressed, need O-ring seal being placed on pressure
In contracting tooling, compression tooling includes limiter, nut, bolt and at least two laminates；O-ring seal is located at two adjacent laminations
Between plate, limiter is sleeved on bolt, and different pressing plates are fixed by nuts and bolt, between nut and pressing plate and bolt and pressure
Gasket is equipped between plate.The number of limiter is equal with bolt number or integral multiple for bolt number, for example bolt can be with
3 are set as, if pressing plate is equipped with two layers, limiter at least needs 3, haves three layers if pressing plate is set, and limiter needs setting 6
It is a, cover 1 limiter on 3 bolts between every two laminate respectively, limiter height error range should ± 0.01mm it
It is interior.
The surface of above-mentioned pressing plate is coated with lubricant, and pressing plate needs especially to say using stainless steel plate or the steel plate of chromium plating
Bright is that talcum powder or methyl-silicone oil may be used in lubricant, and lubricant is on the accelerated aging test of O-ring seal without influence.
In above-mentioned S101, the detailed process that the O-ring seal that is opposite in compression tooling is compressed is as follows：
O-ring seal is compressed to, and in the process of compression by screw bolt and nut by the height identical with limiter height
Middle O-ring seal does not contact with each other with limiter.
In above-mentioned S102, high-low temperature test chamber meets the regulation in GB/T 3512, and specific requirement is as follows：
(1) there is forced-air circulation device, air velocity 0.5m/s~1.5m/s, the minimal surface area face gas of sample
Stream is to avoid interference air velocity；
(2) size of high-low temperature test chamber should meet the total volume of sample no more than high-low temperature test chamber dischargeable capacity
10%, the spacing for hanging sample is at least 10 ㎜, and sample is with thermocycling tank wall at least at a distance of 50 ㎜；
(3) there must be temperature control equipment, ensure that the temperature of sample is maintained in the margin of tolerance of defined test temperature；
(4) the air displacement number of high-low temperature test chamber is 3 to 10 times per hour；
(5) temperature fluctuation range should meet tolerance in high-low temperature test chamber, within 100 DEG C measurement tolerance for ±
1K is ± 2K in 100 DEG C of temperatures above tolerances.
In above-mentioned S012, compression tooling is positioned in high-low temperature test chamber and carries out accelerated aging test detailed process such as
Under：
1) when high-low temperature test chamber air temperature reaches test temperature, the compression tooling equipped with O-ring seal is put
Enter in high-low temperature test chamber；
2) after test period, compression tooling is taken out, and place it on plank from high-low temperature test chamber, in ring
It is placed at a temperature of border at least 30 minutes；
3) height of O-ring seal after accelerated aging test is measured with vernier caliper or calibrator.
Inside the present embodiment, the humiture of experiment does following setting：
(1) test temperature is recommended as 5, and at least not less than 4, and adjacent temperature interval is no less than 10 DEG C；
(2) the test temperature upper limit is determined according to different raw rubbers, vulcanizing system and difference, ethylene propylene diene rubber (EPDM) highest
It is 130 DEG C, therefore chooses 5 test temperatures, is followed successively by 55 DEG C, 75 DEG C, 85 DEG C, 100 DEG C, 120 DEG C；
(3) if it is considered that influence of the humidity to sealing ring degradation, then humidity should be with humidity under sealing ring use condition
Unanimously, specific humidity value is undetermined.
Ageing time does following setting：
(1) ageing time is selected as the multiple of 12h, the 12h such as 24 hours, in order to easy to operate, it is preliminary due to for 24 hours, 48h, 72h,
This 6 test temperatures of 96h, 120h, 144h；
(2) experiment terminates time difference, examination for 3 higher temperatures in 5 temperature due to the difference of test temperature
It tests, sealing ring should reach borderline failure value (being determined according to the water pressure test) when experiment terminates, the experiment for 2 lower temperatures,
When experiment terminates, compression set must not be less than 50%；
(3) test data under each test temperature must not be less than 10, and time interval is according to the situation of performance change
Depending on, usually early period, interval was short, and later stage interval is long；
(4) first test point (for 24 hours) of each test temperature, compression set must not be higher than 20%, if high
In 20%, then test period should be turned down, such as become 12h, until meeting the requirements.
Minimum 55 DEG C of test temperature, specific test temperature and test period are as shown in table 1：
Table 1
In above-mentioned S103, the service life packet of O-ring seal is determined according to the height of O-ring seal after accelerated aging test
It includes：
1) defined parameter (25 DEG C of test temperature, test pressure 1.6Mpa, test period 60min) is pressed to O-ring seal
Water pressure resistance experiment is carried out, if O-ring seal leak, shows that O-ring seal fails；It, will be O-shaped close if the non-leak of O-ring seal
Seal is re-applied in compression tooling, and at a temperature of compression tooling put back in high-low temperature test chamber carries out identical test again
Accelerated aging test, and water pressure resistance experiment is carried out again, until failing due to O-ring seal is because leak.
2) service life of O-ring seal is calculated as follows according to the height of O-ring seal after accelerated aging test：
Wherein, τ represents the service life of O-ring seal；A represents empirical, and 0 ＜ a≤1；B represents test constant；K
Represent aging speed coefficient, unit 1/h；C represents the compression set of O-ring seal, and C=(h1-h0)/(h0-hs)
× 100, wherein h0Represent the elemental height of O-ring seal, h1The height of O-ring seal, h after expression accelerated aging testsIt represents
The height of limiter, h0、h1And hsUnit be mm.
The embodiment of the present invention also provides a kind of accelerated aging tester of O-ring seal, the device include compression module,
The function of above three module is discussed in detail in tentative module and determining module separately below：
Compression module therein, the O-ring seal for being opposite in compression tooling are compressed；
Tentative module therein carries out accelerated aging test for compression tooling to be positioned in high-low temperature test chamber；
Determining module therein, for determining making for O-ring seal according to the height of O-ring seal after accelerated aging test
Use the service life.
The accelerated aging tester of O-ring seal provided in an embodiment of the present invention further includes to measure O-ring seal
Elemental height measurement module, vernier caliper or calibrator may be used in measurement module.
Above-mentioned compression tooling includes limiter, nut, bolt and at least two laminates；
Between two adjacent laminates, limiter is sleeved on bolt O-ring seal, and different pressing plates pass through nut and spiral shell
Bolt is fixed, and gasket is equipped between nut and pressing plate and between bolt and pressing plate.
The number of limiter is equal with bolt number or is the integral multiple of bolt number.
The surface of pressing plate is coated with lubricant, and pressing plate, using stainless steel plate or the steel plate of chromium plating, lubricant uses talcum powder
Or methyl-silicone oil, lubricant is on the accelerated aging test of O-ring seal without influence.
The detailed process that the O-ring seal that above-mentioned compression module is opposite in compression tooling is compressed is as follows：
By screw bolt and nut by the high compression of O-ring seal to identical with the height of limiter, and the process compressed
Middle O-ring seal is not contacted with limiter.
Compression tooling is positioned over the specific mistake that accelerated aging test is carried out in high-low temperature test chamber by above-mentioned tentative module
Journey is as follows：
When high-low temperature test chamber air temperature reaches test temperature, the compression tooling equipped with O-ring seal is put into
In high-low temperature test chamber；
After test period, compression tooling is taken out, and place it on plank from high-low temperature test chamber, in environment
At a temperature of place at least 30 minutes；
The height of O-ring seal after accelerated aging test is measured with vernier caliper or calibrator.
Minimum 55 DEG C of test temperature, test period is at least for for 24 hours, and test period is 24 integral multiple.
The above-mentioned root tuber of cover half really determines the use longevity of O-ring seal according to the height of O-ring seal after accelerated aging test
The detailed process of life is as follows：
1) water pressure resistance experiment is carried out to O-ring seal, if O-ring seal leak, shows that O-ring seal fails；It is if O-shaped
The non-leak of sealing ring, O-ring seal is re-applied in compression tooling, and compression tooling is put back in high-low temperature test chamber again
The accelerated aging test at a temperature of identical test is carried out, and carries out water pressure resistance experiment again, until O-ring seal is lost due to leak
Until effect；
2) service life of O-ring seal is calculated as follows according to the height of O-ring seal after accelerated aging test：
Wherein, τ represents the service life of O-ring seal；A represents empirical, and 0 ＜ a≤1；B represents test constant；K
Represent aging speed coefficient, unit 1/h；C represents the compression set of O-ring seal, and C=(h1-h0)/(h0-hs)
× 100, wherein h0Represent the elemental height of O-ring seal, h1The height of O-ring seal, h after expression accelerated aging testsIt represents
The height of limiter, h0、h1And hsUnit be mm.
For convenience of description, each section of apparatus described above is divided into various modules with function or unit describes respectively.
Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware when implementing the application.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware can be used in the application
Apply the form of example.Moreover, the computer for wherein including computer usable program code in one or more can be used in the application
The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to the flow according to the method for the embodiment of the present application, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices is generated for real
The device of function specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field with reference to above-described embodiment still can to the present invention specific embodiment modify or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (16)
1. a kind of accelerated aging test method of O-ring seal, which is characterized in that including：
The O-ring seal being opposite in compression tooling is compressed；
Compression tooling is positioned in high-low temperature test chamber and carries out accelerated aging test；
The service life of O-ring seal is determined according to the height of O-ring seal after accelerated aging test.
2. the accelerated aging test method of O-ring seal according to claim 1, which is characterized in that described to be opposite to pressure
Before O-ring seal in contracting tooling is compressed, including：
The elemental height of O-ring seal is measured by vernier caliper or calibrator.
3. the accelerated aging test method of O-ring seal according to claim 1 or 2, which is characterized in that the compression work
Dress includes limiter, nut, bolt and at least two laminates；
Between two adjacent laminates, the limiter is sleeved on bolt the O-ring seal, and different pressing plates pass through nut
It is fixed with bolt, gasket is equipped between the nut and pressing plate and between bolt and pressing plate；
The number of the limiter is equal with bolt number or is the integral multiple of bolt number.
4. the accelerated aging test method of O-ring seal according to claim 3, which is characterized in that the table of the pressing plate
Face is coated with lubricant, and the pressing plate is using stainless steel plate or the steel plate of chromium plating；
The lubricant uses talcum powder or methyl-silicone oil.
5. the accelerated aging test method of O-ring seal according to claim 3, which is characterized in that described to be opposite to pressure
O-ring seal in contracting tooling carries out compression and includes：
By screw bolt and nut by the high compression of O-ring seal to identical with the height of limiter, and it is O-shaped during compressing
Sealing ring is not contacted with limiter.
6. the accelerated aging test method of O-ring seal according to claim 5, which is characterized in that described to compress work
Put be placed in high-low temperature test chamber carry out accelerated aging test include：
When high-low temperature test chamber air temperature reaches test temperature, the compression tooling equipped with O-ring seal is put into height
In temperature test box；
After test period, compression tooling is taken out, and place it on plank from high-low temperature test chamber, in environment temperature
It is lower to place at least 30 minutes；
The height of O-ring seal after accelerated aging test is measured with vernier caliper or calibrator.
7. the accelerated aging test method of O-ring seal according to claim 6, which is characterized in that the test temperature
Minimum 55 DEG C, the test period is at least for for 24 hours, and test period is 24 integral multiple.
8. the accelerated aging test method of O-ring seal according to claim 6, which is characterized in that described according to acceleration
The height of O-ring seal determines that the service life of O-ring seal includes after degradation：
Water pressure resistance experiment is carried out to O-ring seal, if O-ring seal leak, shows that O-ring seal fails；If O-ring seal
Non- leak, O-ring seal is re-applied in compression tooling, and compression tooling is put back to and carries out phase in high-low temperature test chamber again
With the accelerated aging test under test temperature, and water pressure resistance experiment is carried out again, until O-ring seal fails due to leak and is
Only；
The service life of O-ring seal is calculated as follows according to the height of O-ring seal after accelerated aging test：
Wherein, τ represents the service life of O-ring seal；A represents empirical, and 0 ＜ a≤1；B represents test constant；K is represented
Aging speed coefficient, unit 1/h；C represents the compression set of O-ring seal, and C=(h1-h0)/(h0-hs)×
100, wherein h0Represent the elemental height of O-ring seal, h1The height of O-ring seal, h after expression accelerated aging testsRepresent limit
The height of device processed, h0、h1And hsUnit be mm.
9. a kind of accelerated aging tester of O-ring seal, which is characterized in that including：
Compression module, the O-ring seal for being opposite in compression tooling are compressed；
Tentative module carries out accelerated aging test for compression tooling to be positioned in high-low temperature test chamber；
Determining module, for determining the service life of O-ring seal according to the height of O-ring seal after accelerated aging test.
10. the accelerated aging tester of O-ring seal according to claim 9, which is characterized in that described device is also wrapped
Measurement module is included, the measurement module is used to measure the elemental height of O-ring seal；
The measurement module uses vernier caliper or calibrator.
11. the accelerated aging tester of O-ring seal according to claim 9, which is characterized in that the compression tooling
Including limiter, nut, bolt and at least two laminates；
Between two adjacent laminates, the limiter is sleeved on bolt the O-ring seal, and different pressing plates pass through nut
It is fixed with bolt, gasket is equipped between the nut and pressing plate and between bolt and pressing plate；
The number of the limiter is equal with bolt number or is the integral multiple of bolt number.
12. the accelerated aging tester of O-ring seal according to claim 11, which is characterized in that the pressing plate
Surface is coated with lubricant, and the pressing plate is using stainless steel plate or the steel plate of chromium plating；
The lubricant uses talcum powder or methyl-silicone oil.
13. the accelerated aging tester of O-ring seal according to claim 11, which is characterized in that the compression mould
Block is specifically used for：
By screw bolt and nut by the high compression of O-ring seal to identical with the height of limiter, and it is O-shaped during compressing
Sealing ring is not contacted with limiter.
14. the accelerated aging tester of O-ring seal according to claim 13, which is characterized in that the experiment mould
Block is specifically used for：
When high-low temperature test chamber air temperature reaches test temperature, the compression tooling equipped with O-ring seal is put into height
In temperature test box；
After test period, compression tooling is taken out, and place it on plank from high-low temperature test chamber, in environment temperature
It is lower to place at least 30 minutes；
The height of O-ring seal after accelerated aging test is measured with vernier caliper or calibrator.
15. the accelerated aging tester of O-ring seal according to claim 14, which is characterized in that the experiment temperature
Spend minimum 55 DEG C, the test period is at least for for 24 hours, and test period is 24 integral multiple.
16. the accelerated aging tester of O-ring seal according to claim 14, which is characterized in that the determining mould
Block is specifically used for：
Water pressure resistance experiment is carried out to O-ring seal, if O-ring seal leak, shows that O-ring seal fails；If O-ring seal
Non- leak, O-ring seal is re-applied in compression tooling, and compression tooling is put back to and carries out phase in high-low temperature test chamber again
With the accelerated aging test under test temperature, and water pressure resistance experiment is carried out again, until O-ring seal fails due to leak and is
Only；
The service life of O-ring seal is calculated as follows according to the height of O-ring seal after accelerated aging test：
Wherein, τ represents the service life of O-ring seal；A represents empirical, and 0 ＜ a≤1；B represents test constant；K is represented
Aging speed coefficient, unit 1/h；C represents the compression set of O-ring seal, and C=(h1-h0)/(h0-hs)×
100, wherein h0Represent the elemental height of O-ring seal, h1The height of O-ring seal, h after expression accelerated aging testsRepresent limit
The height of device processed, h0、h1And hsUnit be mm.
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