CN106153479B - The fast-open type high pressure hydrogen environment fatigue of materials method for testing performance of stationary seal - Google Patents
The fast-open type high pressure hydrogen environment fatigue of materials method for testing performance of stationary seal Download PDFInfo
- Publication number
- CN106153479B CN106153479B CN201610505698.1A CN201610505698A CN106153479B CN 106153479 B CN106153479 B CN 106153479B CN 201610505698 A CN201610505698 A CN 201610505698A CN 106153479 B CN106153479 B CN 106153479B
- Authority
- CN
- China
- Prior art keywords
- environmental cabinet
- test
- cylinder
- hydrogen
- sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0204—Safety arrangements, e.g. remote control, emergency stop
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0688—Time or frequency
Abstract
The invention discloses the fast-open type high pressure hydrogen environment fatigue of materials method for testing performances of stationary seal, the present invention is using the loading frequency method to resonate to excite sample component to generate identical as the intrinsic frequency of sample component of environmental cabinet bottom cover reciprocating horizontal motion to realize testing fatigue of the sample under hydrogen gas environment, no setting is required, and height week or high frequency fatigue test under the test of fatigue of materials performance under high pressure hydrogen environment, especially realization high/low temperature high pressure hydrogen environment can be realized in movable sealing structure.
Description
Technical field
The invention belongs to material mechanical performance test equipment development field, in particular to the fast-open type of a kind of stationary seal is high
Pressure hydrogen environment fatigue of materials method for testing performance.
Background technique
Hydrogen Energy is new century important secondary energy sources, and high-pressure hydrogen storing is current prevailing hydrogen energy storage mode.
However, material work is under hydrogen gas environment, mechanical property can be damaged because of hydrogen embrittlement, especially in fatigue load
Under effect, anti-fatigue performance of the material under high pressure hydrogen can degradation.For permanent, the reliable fortune for ensuring high pressure hydrogen system
Row, it is necessary to which mechanical property (especially anti-fatigue performance) of the material under hydrogen gas environment is tested and assessed.
Currently, there are two main classes for material mechanical performance test equipment under hydrogen gas environment.One kind uses non-standard sample, such as
Disk sample used by patent [201510349246.4], this kind of equipment to the dependences of the factors such as sample machining accuracy compared with
By force, it is difficult to form the unified test method of standard and material property evaluation index.It is another kind of to use on traditional experiment machine host
It docks the form (see figure 1) of high pressure hydrogen environment case: sample is mounted on inside high pressure hydrogen environment case；Load bar one end and biography
Actuator connection on system test machine host, the other end then protrudes into inside environmental cabinet to be connected with sample, so that actuator be applied
It is loaded in the load transmission to sample added；Such equipment can use for reference existing material mechanical performance test and evaluation method,
It is current more widely applied structure.But designing and developing for such equipment faces following crucial problem:
(1) high frequency or high-cycle fatigue test are difficult to realize
Since (especially under fatigue load), there are relative motions between load bar and environmental cabinet, therefore in loading procedure
Need to be arranged movable sealing structure to avoid hydrogen gas leakage and stable environment case internal hydrogen pressure.And practice have shown that, it is existing move it is close
The seal structure service life is very short, often after using the short period, fails suddenly because of the reasons such as abrasion and suction hydrogen-expansion.
Especially during fatigue test, load bar is moved back and forth, it is easier to aggravate the abrasion of dynamic seal, and fatigue load
Frequency is higher, and abrasion is more serious, and then sealing part abrasion failure is easily caused to cause hydrogen gas leakage and be forced to stop test.This
It is that the prior art is difficult to realize material high frequency (frequency be greater than 10Hz) or high week, (cycle-index was greater than 10 under high pressure hydrogen environment5)
The very crux of fatigue test.
(2) friction power loss is serious
In loading procedure, load bar often generates biggish frictional force at dynamic sealing, and the pressure of test(ing) medium is higher, should
Frictional force is bigger, up to 10kN.Therefore, often friction power loss is serious for such equipment, has also been further exacerbated by the mill of sealing element
Damage.
(3) complicated axial force balance structure need to be set
High pressure gas in high pressure hydrogen environment case axially may produce up to a few tons of extrapolability in load bar, which exists
Sample to be tested can cause greater impact to actuator when being broken, the serious precision and service life for reducing experimental rig.Therefore, must
Must corresponding axial force balance structure be set to eliminate the axial load.However the axial force balance structure generally requires increase by one
Road dynamic sealing (experimental rig proposed such as patent [201110259252.2]), this further increases the possibility of hydrogen gas leakage
Property, and increase friction power loss.Meanwhile the increase of dynamic sealing, the inevitable reliability and durability for further restricting experimental rig.
(4) lack the real-time monitoring of equipment health status
Such equipment operating pressure is high (up to 140MPa), and test(ing) medium is inflammable and explosive hydrogen, if therefore equipment
It is cracked cause hydrogen gas leakage and cannot monitor in time if, it will cause to seriously endanger.However, current such equipment is often
Lack the design of reasonable structure, be unable to real-time perfoming equipment health monitoring, it is difficult to equipment occur hydrogen gas leakage moment and
When activate emergency braking system, ensure the safety of testing crew.
(5) lack reasonable temperature-control structure
Temperature is the important factor in order of material fatigue behaviour under hydrogen gas environment, it is therefore desirable to which such equipment has
High temperature and pressure hydrogen or cryogenic high pressure hydrogen gas test function.However, such equipment lacks reasonable temperature-control structure at present.As specially
Sharp [201510316095.2] disclose a kind of high-temperature hydrogen environmentally conscious materials performance test apparatus, do not have low-temperature test function
Can, furthermore contact forceful electric power directly with high pressure hydrogen in such a way that resistance wire directly heats hydrogen, there are larger safety is hidden
Suffer from.For another example, patent [201420753372.7] realizes height temperature function, but heat transferring medium by the way of external jacket heat exchange
It could exchange heat with the gas in environmental cabinet after must first being exchanged heat with barrel wall, be that bear high pressure gas its barrel wall past
It is past thicker, cause the heat transferring medium in collet that cannot effectively exchange heat to the intracorporal gas of cylinder, the structure totally imitate by heat exchange
Rate is lower, and collet can also radiate along outer wall, causes the serious waste of heat.
(6) lack reasonable quick-opening structure
Test period is substantially shorter using fast opening and closing structure for hydrogen environmental cabinet, improves test efficiency.But at present this
Class equipment lacks reasonable quick-opening structure.If patent [201110259252.2] is using pin-type load quick-opening structure, the structure
The aperture on the cabinet and seal receptacle of environmental cabinet is needed, tapping generates biggish stress and concentrates, and often generates failure place.
In addition, the pin in the structure easily occurs bending and deformation under shear stress effect, often occur after using the short period
Pin bending deformation is excessive to be difficult to inject pin hole and can not work, and reliability is lower.For another example, patent [201420753372.7] is adopted
It is the quick-opening structure of tooth-type clamp connection, but is serious reduction knot in place of high stress concentrations at the tooth root of the structure
Structure service life；Meanwhile the size nibbled of clip and tooth is often larger bears load to increase contact surface, so that such open knot fastly
Structure is often more huge.
Summary of the invention
The technical problem to be solved by the present invention is to, overcome the deficiencies in the prior art, a kind of no setting is required dynamic sealing knot is proposed
The test method of fatigue of materials performance under high pressure hydrogen environment can be realized in structure, especially material under realization high/low temperature high pressure hydrogen environment
The height week of material or high frequency fatigue test, and it is able to achieve the real-time monitoring of test safe condition during test.
In order to solve the technical problem, the solution that the present invention uses is as follows.
Fast-open type high pressure hydrogen environment fatigue of materials performance test apparatus based on stationary seal, no setting is required movable sealing structure
Height week or the high-cycle fatigue test of material under high/low temperature high pressure hydrogen environment can be realized, the test method specifically includes following
Step:
Step A: installation sample removes left rectangle press box and right rectangle press box first, then removes environmental cabinet top cover, point
From environmental cabinet top cover and environmental cabinet bottom cover, the sample installation position on environmental cabinet bottom cover is completely exposed outside；Sample is installed,
Then the counterweight connecting with acceleration transducer is connected on sample；
Step B: frequency sweep also needs to carry out sinusoidal vibration frequency sweep before starting formal fatigue test, with determine by counterweight with
The intrinsic frequency for the resonant component that sample is constituted；Vibrating Load in the horizontal direction is applied to environmental cabinet bottom cover by vibration excitor,
Make environmental cabinet bottom cover that the sinusoidal vibration of simple harmonic motion i.e. in the horizontal direction occur with constant acceleration, increasing frequency, using
Logarithm frequency sweep determines first three rank intrinsic frequency of resonant component by the crest value in the feedback signal of acceleration transducer；
Step C: filling low pressure high-purity gas, i.e., on closure environmental cabinet top cover to environmental cabinet bottom cover, then left rectangle pressure
Frame and right rectangle press box buckle into environmental cabinet respectively, so that environmental cabinet top cover links into an integrated entity with environmental cabinet bottom cover, start vacuum pump
Collet inner cavity is vacuumized, after vacuumizing, close valve, it is subsequent again test when need not vacuumize again, then,
Starting vacuum pump vacuumizes cylinder lumen and system pipeline, is then connected to hydrogen cylinder, utilizes the pressure hydrogen in hydrogen cylinder
Gas replaces cylinder lumen several times, until the hydrogen purity of cylinder lumen reaches test requirements document, at this point, filling in cylinder
Full low pressure high pure hydrogen gas；
Step D: temperature adjustment, i.e. starting refrigeration heater carry out temperature adjustment to cylinder lumen gas, until test gas medium reaches
To the test temperature of setting；
Step E: pressurization, i.e. starting booster is slowly pressurized the intracorporal gas of cylinder, until test gas medium reaches
To the test pressure of setting；During pressurization and follow-up test, heater of freezing is still in working condition, to the intracorporal height of cylinder
Temperature of calming the anger is finely adjusted, it is ensured that sample is in the high pressure, high purity hydrogen environment under set temperature；
Step F: testing fatigue, i.e. starting vibration excitor drive environment bottom cover rim horizontal direction make simple harmonic motion, load frequency
Rate is taken as first natural frequency obtained in step B, to force the resonance of counterweight generation in the horizontal direction；Sample it is upper
Cyclic fatigue load then is born under the alternation inertia force effect of counterweight and makees back and forth to move back and forth, the size of the fatigue load in end
It can be automatic through industrial personal computer by the quality m combination Newton's second law F=ma for the acceleration a and counterweight that acceleration transducer measures
It handles and shows and record；During test, industrial personal computer data and fatigue load that also record all the sensors acquire in real time
Cycle-index, while analyzing acceleration transducer signals in real time, driving frequency made to track resonant component intrinsic frequency, keep altogether
Vibration state；When the first natural frequency of acceleration transducer response reduces by 5% relative to initial value, illustrate that sample starts
Existing crackle fails, and terminates fatigue test at this time；Or when test cycle number reaches setting value, tired examination can also be terminated
It tests；Sample fatigue life cycle experienced and fatigue load are recorded simultaneously；
Step G: pressure release is risen again, i.e., unlatching blow valve to system decompression, and using low-pressure argon to system purged with
Remove the hydrogen of system residual；Then system temperature is reverted to by room temperature by refrigeration heater；
Step H: taking out sample, that is, removes left rectangle press box and right rectangle press box, isolating environment case top cover and environmental cabinet bottom
Lid takes out sample.
Further, in above-mentioned test method, the counterbalance mass in B need to be only changed the step, the survey of sample fatigue can be adjusted
The loading frequency of examination.
Further, in above-mentioned test method, it need to only change the hydrogen in step C into argon gas, high/low temperature height can be realized
Press height week or the high frequency fatigue test of material under ar gas environment.
Further, in above-mentioned test method, the sample is pole sample, and is provided in the side of sample marking distance section scarce
Mouthful.
Further, in above-mentioned test method, the sweep rate is 0.5 oct/min.
Further, in above-mentioned test method, the acceleration transducer uses the Cr-Ni with resistant to hydrogen interference performance to close
Golden material is made.
Further, in above-mentioned test method, the fast-open type high pressure hydrogen environment fatigue of materials performance of the stationary seal is tried
Experiment device, including environment tank module, gas source module, booster, vacuum pump, heat exchange module and industrial personal computer；
The environment tank module by environmental cabinet top cover, environmental cabinet bottom cover, left rectangle press box, right rectangle press box, heat exchange bend pipe,
Acceleration transducer, counterweight, load transducer, pedestal and vibration excitor composition；The environmental cabinet top cover include cylinder, collet and every
Thermal Ceramics plate, the top of the collet are equipped with aperture and are used for real-time watch device for connecting hydrogen gas sensor, hydrogen gas sensor
Health status, the lower end of collet are then equipped with the aperture for vacuumizing；The cylinder is located at collet inner cavity；Collet internal diameter is greater than cylinder
External diameter forms cavity to the two, accompanies thermal insulation ceramics plate along axial direction between collet and cylinder, also sets between collet and cylinder
There is static seal structure and realized by screw and is connected；The upper end of the environmental cabinet bottom cover is equipped with rubber o-ring radial direction static sealing portion
Part and cylinder constitute confined space, and the intermediate setting ladder of environmental cabinet bottom cover is used for the positioning of left and right rectangle press box, environmental cabinet bottom
The bottom end setting convex guide post of lid is simultaneously matched with the spill guide rail on the pedestal for providing simple harmonic oscillation space；The environment
Bottom cover rim convex guide post is axially connected to generate simple harmonic oscillation with vibration excitor, and equipped with for the heat exchange that is placed in cylinder lumen
The intake channel and exit passageway and corresponding air inlet and venthole that bend pipe is connected；The environmental cabinet bottom cover is also at center
It is provided with extraction of the through-hole for signal wire, the top of central through hole connects load transducer；The lower end of the load transducer
Central part is connect with acceleration transducer, and the upper end of load transducer is equipped with threaded post for connecting sample, the other end of sample
It is connected with the threaded post on the counterweight, the upper end of counterweight is then equipped with acceleration transducer；The environmental cabinet top cover and environment
Connection is realized to undertake the axial of inner barrel gas generation and carry by left rectangle press box and right rectangle press box between bottom lid
Lotus；
The gas source module is made of hydrogen cylinder, argon bottle and corresponding valve；The row of the exhaust outlet of hydrogen cylinder, argon bottle
Port passes through hydrogen source valve, argon gas source valve respectively, then summarizes the air inlet accessed after gas source total valve with the booster
Mouth is connected；The gas outlet of booster successively with gas outlet valve, boost section hose, environmental cabinet valve, pressure sensor, environmental cabinet
Bottom cover air inlet/outlet is connected；The vacuum pump is successively connected with vacuum sensor, vacuum line valve, and vacuum line valve connects respectively
Enter vacuum zone hose and boost section hose, for vacuumizing to the cavity constituted between environmental cabinet inside and collet and cylinder；
The other end of vacuum zone hose is connected through extraction valve with the aperture for vacuumizing set on collet；The blow valve connects respectively
Enter above-mentioned vacuum zone hose and boost section hose, the blowdown pressure letdown for control test system；Aforementioned all hoses are mainly used for
The buffer shock-absorbing of equipment connecting line of whole device when making simple harmonic oscillation；
The heat exchange module includes passing through the sequentially connected refrigeration heater of process pipeline, liquid input section hose, the environment
Intake channel that bottom covers, the heat exchange bend pipe, the exit passageway on the environmental cabinet bottom cover and liquid section hose out, for will
The heat transferring medium that refrigeration heater generates, which is transferred to inside environmental cabinet, to exchange heat, and realizes required high temperature/low-temperature test environment；
The industrial personal computer is used to control operation and the institute of the equipment such as booster, vacuum pump, vibration excitor and refrigeration heater
Valvular unlatching；Industrial personal computer and pressure sensor, acceleration transducer, vacuum sensor, temperature sensor, load sensing
Device is connected by signal, and signal acquisition is carried out.
In the present invention, the top of the collet is equipped with the positioning that boss is used for left rectangle press box and right rectangle press box.
In the present invention, the thermal insulation ceramics plate is by the ceramic material system with good heat-proof quality and good compressive property
At the axial load transmitting for avoiding that heat exchange occurs at the top of cylinder with periphery environment, while can generating high pressure gas to cylinder
Give rectangle press box.
Compared with prior art, the beneficial effects of the present invention are:
1. the present invention solves the problems, such as to be difficult to carry out material high frequency or high-cycle fatigue test under hydrogen gas environment；
And no setting is required movable sealing structure, hydrogen gas leakage and friction power loss caused by eliminating because of dynamic sealing.
2. the present invention can effectively improve test loading frequency, thus fatigue test of materials under hydrogen gas environment is greatly decreased
Required time significantly improves test efficiency.
3. the present invention can not only realize high temperature and pressure hydrogen environmental test but also can realize cryogenic high pressure hydrogen environmental test, heat transferring medium
It is directly recycled inside environmental cabinet, reduces heat exchange link, improve heat exchange efficiency；Vacuum jacket is arranged in environmental cabinet periphery, keeps away
Exempt from that heat exchange occurs inside environmental cabinet periphery environment and environmental cabinet, plays good heat insulation function.
4. the present invention realizes the fast opening and closing of high pressure hydrogen environment case using press-frame type quick-opening structure, used improving equipment
It effectively shortens test period under the premise of service life, improves test efficiency.
5. the present invention can on-line real time monitoring equipment health status, if cylinder is cracked during military service, hydrogen
Gas will leak into the vacuum chamber constituted between collet and cylinder, and the hydrogen gas sensor being arranged on vacuum chamber will timely respond to
And sound-light alarm is issued, and triggering emergency braking system, effective guarantee personnel and equipment safety.
Detailed description of the invention
Fig. 1 is common high pressure hydrogen environment material mechanical performance test equipment schematic diagram；
Fig. 2 is general arrangement schematic diagram of the invention；
Fig. 3 is the cross-sectional view of the environment tank module in the present invention；
Fig. 4 is the left view of Fig. 3.
Fig. 1 each section is described as follows: actuator 01, load bar 02, dynamic sealing 03, high pressure hydrogen environment case 04, sample 05.
4 each section of Fig. 2-is described as follows: hydrogen source valve 1, hydrogen cylinder 2, argon gas source valve 3, gas source total valve 4, argon gas
Bottle 5, booster 6, vacuum pump 7, vacuum sensor 8, vacuum line valve 9, blow valve 10, hydrogen gas sensor 11, vacuum zone are soft
Pipe 12, extraction valve 13, pressure sensor 14, gas outlet valve 15, boost section hose 16, acceleration transducer 17, counterweight 18, temperature
It spends sensor 19, load transducer 20, liquid input section hose 21, go out liquid section hose 22, vibration excitor 23, refrigeration heater 24, industry control
Machine 25, left rectangle press box 26, right rectangle press box 27, sample 28, aperture interface 29, intake channel 30, pedestal 31, exit passageway
32, environmental cabinet bottom cover 33, static seal component 34, screw 35, static seal component 36, heat exchange bend pipe 37, collet 38, cylinder 39, every
Thermal Ceramics plate 40, environmental cabinet bottom cover air inlet/outlet 41, environmental cabinet valve 42, acceleration transducer 43.
Specific embodiment
A specific embodiment of the invention is illustrated with reference to the accompanying drawing.
As shown in Fig. 2, the fast-open type high pressure hydrogen environment fatigue of materials performance test apparatus for the stationary seal that this example uses,
Including environment tank module, gas source module, booster 6, vacuum pump 7, heat exchange module and industrial personal computer 25.
As shown in Figure 3 and Figure 4, the environment tank module by environmental cabinet top cover, environmental cabinet bottom cover 33, left rectangle press box 26,
Right rectangle press box 27, heat exchange bend pipe 37, acceleration transducer 17, acceleration transducer 43, counterweight 18, load transducer 20, base
Seat 31 and vibration excitor 23 form；The environmental cabinet top cover includes cylinder 39, collet 38 and thermal insulation ceramics plate 40, and 38 top of collet is set
Have aperture for connecting hydrogen gas sensor 11,38 lower end of collet is then equipped with aperture 29 for vacuumizing, cylinder 39 is located at collet
38 inner cavities；38 internal diameter of collet is greater than 39 outer diameter of cylinder to which the two forms cavity, accompanies between cylinder 39 and collet 38 along axial direction
It is additionally provided with static seal structure 36 between 40 cylinder 39 of thermal insulation ceramics plate and collet 38 and connection is realized by screw 35；Environmental cabinet bottom
33 upper end of lid is equipped with rubber o-ring radial direction static seal component 34 and cylinder 39 constitutes confined space, the centre of environmental cabinet bottom cover 33
Positioning of the ladder for left and right rectangle press box, the spill on the bottom end setting convex guide post and pedestal 31 of environmental cabinet bottom cover 33 are set
Guide rail matches, the environmental cabinet bottom cover 33 is axially connected along convex guide post with vibration excitor 23 to generate the reciprocal fortune of horizontal direction
It moves and equipped with the intake channel 30 and exit passageway 32 and phase for being connected with the heat exchange bend pipe 37 for being placed in 39 inner cavity of cylinder
The air inlet/outlet 41 answered；33 center of environmental cabinet bottom cover is provided with extraction of the through-hole for signal wire, topmost connects load transducer
20；20 lower end central part of load transducer is connect with acceleration transducer 43, and upper end is equipped with threaded post for connecting sample 28, is tried
28 other end of sample is connected with the threaded post on counterweight 18, and 18 upper end of counterweight is equipped with acceleration transducer 17；The environmental cabinet top
It is realized and is connected to bear axial load by left rectangle press box 26 and right rectangle press box 27 between lid and environmental cabinet bottom cover 33；It is described
38 top of collet is equipped with the positioning that boss is used for left rectangle press box 26 and right rectangle press box 27；The thermal insulation ceramics plate 40 is by having
The ceramic material of good heat-proof quality and good compressive property is made, and is effectively prevented from 39 top of cylinder with periphery environment and heat occurs
Exchange, while axial load that high pressure gas generates cylinder 39 can be born and pass it to left rectangle press box 26 and right rectangle
Press box 27.
As shown in Figures 2 and 3, the gas source module is made of hydrogen cylinder 2, argon bottle 5 and corresponding valve；Hydrogen cylinder 2
Exhaust outlet, argon bottle 5 exhaust outlet pass through hydrogen source valve 1, argon gas source valve 3 respectively, then summarize access gas source main valve
It is connected after door 4 with 6 air inlet of booster；6 gas outlet of booster successively with gas outlet valve 15, boost section hose 16, environmental cabinet
Valve 42, pressure sensor 14, environmental cabinet bottom cover air inlet/outlet 41 are connected；Vacuum pump 7 successively with vacuum sensor 8, vacuum
Pipeline valve 9 be connected, vacuum line valve 9 is respectively connected to vacuum zone hose 12 and boost section hose 16, for environmental cabinet inside with
And the cavity constituted between collet 38 and cylinder 39 vacuumizes；12 other end of vacuum zone hose is through set on extraction valve 13 and collet
The aperture for vacuumizing be connected；Blow valve 10 is respectively connected to above-mentioned vacuum zone hose 12 and boost section hose 16, for controlling
The blowdown pressure letdown of pilot system processed.
The heat exchange module includes passing through the sequentially connected refrigeration heater 24 of process pipeline, liquid input section hose 21, environment
Intake channel 30, heat exchange bend pipe 37, the exit passageway 32 on environmental cabinet bottom cover 33, out liquid section hose 22 on bottom lid 33, are used
It is transferred to inside environmental cabinet and exchanges heat in the heat transferring medium that heater 24 generates that will freeze, realize required high temperature/low temperature examination
Test environment.
The industrial personal computer 25 is used to control the fortune of the equipment such as booster 6, vacuum pump 7, vibration excitor 23 and refrigeration heater 24
The valvular unlatching of row and institute；Industrial personal computer 25 and pressure sensor 14, acceleration transducer 17, vacuum sensor 8, temperature
Sensor 19, load transducer 20 are connected by signal, and signal acquisition is carried out.
Based on the experimental rig, the test method specifically includes the following steps:
Step A: installation sample.Left rectangle press box 26 and right rectangle press box 27 are removed first, then remove environmental cabinet top cover
(being made of cylinder 39, collet 38 and thermal insulation ceramics plate 40), isolating environment case top cover and environmental cabinet bottom cover 33, make environmental cabinet bottom cover
On sample installation position be completely exposed outside；Sample 28 is installed, the counterweight 18 that then will be connect with acceleration transducer 17
It is connected on sample 28.
Step B: frequency sweep.Also need to carry out sinusoidal vibration frequency sweep before starting formal fatigue test, with determine by counterweight 18 with
The intrinsic frequency for the resonant component that sample 28 is constituted.Exciting in the horizontal direction is applied to environmental cabinet bottom cover 33 by vibration excitor 23
Load makes environmental cabinet bottom cover 33 that simple harmonic motion (edge occur with constant acceleration (being monitored by acceleration transducer 43), increasing frequency
The sinusoidal vibration of horizontal direction), using logarithm frequency sweep, sweep rate is 0.5 oct/min, passes through acceleration transducer 17
Feedback signal in crest value determine first three rank intrinsic frequency of resonant component.
Step C: filling low pressure high-purity gas.It is closed on environmental cabinet top cover to environmental cabinet bottom cover 33.Then left rectangle pressure
Frame 26 and right rectangle press box 27 buckle into environmental cabinet respectively, so that environmental cabinet top cover links into an integrated entity with environmental cabinet bottom cover 33.Starting
Vacuum pump 7 vacuumizes 38 inner cavity of collet, after vacuumizing, closes valve 13, it is subsequent need not again when testing again
It vacuumizes.Then, starting vacuum pump 7 vacuumizes 39 inner cavity of cylinder and system pipeline.Then it is connected to hydrogen cylinder 2, is utilized
Low pressure hydrogen in hydrogen cylinder 2 replaces 39 inner cavity of cylinder several times, until the hydrogen purity of 39 inner cavity of cylinder reaches examination
Test requirement.At this point, filling full low pressure high pure hydrogen gas in cylinder 39.
Step D: temperature adjustment.Starting refrigeration heater 24 carries out temperature adjustment to 39 inner chamber gas of cylinder, until temperature sensor 19
Reach the test temperature of setting.
Step E: pressurization.Starting booster 6 is slowly pressurized the gas in cylinder 39, until pressure sensor 14 reaches
To the test pressure of setting.During pressurization and follow-up test, heater of freezing is still in working condition, in cylinder 39
High pressure gas temperature is finely adjusted, it is ensured that sample 28 is in the high pressure, high purity hydrogen environment under set temperature.
Step F: testing fatigue.Starting 23 drive environment bottom lid 33 of vibration excitor makees simple harmonic motion in the horizontal direction, loads
Frequency is taken as first natural frequency obtained in step B, to force the resonance of the generation of counterweight 18 in the horizontal direction；Sample
Cyclic fatigue load then is born under the alternation inertia force effect of counterweight 18 and makees back and forth to move back and forth, the fatigue load in 28 upper ends
The quality (being denoted as m) of acceleration (being denoted as a) and counterweight 18 that can be measured by acceleration transducer 17 of size combine newton the
Two laws (F=ma) automatically process through industrial personal computer 25 and show and record.During test, also record is all in real time for industrial personal computer 25
The data of sensor acquisition and the cycle-index of fatigue load, while acceleration transducer signals are analyzed in real time, make excitation frequency
Rate tracks resonant component intrinsic frequency, keeps resonance state.When the first natural frequency that acceleration transducer 17 responds is opposite
In initial value reduce by 5% when, illustrate sample start it is cracked fail, terminate fatigue test at this time.Or work as test cycle
When number reaches setting value, fatigue test can also be terminated.
In addition, the initial first natural frequency of resonant component can be changed by changing the quality of counterweight 18, so as to
Change the loading frequency of fatigue test of materials.
Step G: pressure release is risen again.Open blow valve 10 to system decompression, and using low-pressure argon to system purged with
Remove the hydrogen of system residual.Then system temperature is reverted to by room temperature by heater 24 of freezing.
Step H: sample is taken out.Remove left rectangle press box 26 and right rectangle press box 27, isolating environment case top cover and environmental cabinet
Bottom cover 33 takes out sample 28.
In above-mentioned applying step, it need to only change the hydrogen in step C into argon gas, high/low temperature high pressure argon gas ring can be realized
All (or high frequency) fatigue tests of the height of material under border.
In the present invention, it pushes environmental cabinet bottom cover 33 to make simple harmonic motion using vibration excitor 23, and then motivates counterweight 18 and examination
Sample 28 resonates together, realizes high frequency or the high cycle fatigue test of sample 28；The pipeline being directly connected to environment tank module is equal
Provided with buffering link (such as vacuum zone hose 12, boost section hose 16, liquid input section hose 21 and liquid section hose 22 out), it is ensured that letter
The safety and reliability of the connecting line of whole device during harmonic motion.Environment is protruded into using load bar relative to traditional
The structure for carrying out fatigue loading in case to sample is solved because of dynamic sealing abrasion, is let out the invention avoids dynamic sealing component is used
Material high frequency (or the high week) technical bottleneck that fatigue test is difficult to realize, is eliminated under high/low temperature hydrogen gas environment caused by leaking
Hydrogen gas leakage, friction power loss caused by dynamic sealing；The present invention can improve the load of test by adjusting the quality of counterweight 18
Frequency, and then be greatly decreased under hydrogen gas environment the time required to fatigue test of materials, significantly improve test efficiency.For example, passing
The testing machine of system is loaded using 1Hz frequency, then needs could complete 10 within 115 days7Secondary CYCLIC LOADING；Loading frequency of the present invention can
50Hz is promoted, then only needs can be completed 10 within 2.3 days7Secondary CYCLIC LOADING.
In the present invention, the high pressure gas body temperature in environmental cabinet is adjusted by being built in the heat exchange bend pipe 37 of 39 inner cavity of cylinder
Degree, is provided simultaneously with high temperature and pressure hydrogen and cryogenic high pressure hydrogen gas test function；And it is provided with vacuum cavity in 39 periphery of cylinder, it keeps away
Exempt from dissipation of the test gas to 39 ambient atmosphere environment heat conduction pyrogenicity amount of cylinder, improves heat exchange efficiency and temperature adjustment speed；Also it keeps away
Exempt from directly to contact bring security risk with high pressure hydrogen because of forceful electric power element, there is remarkable advantage.
In the present invention, stress condition is more preferable by setting, the higher press-frame type quick-opening structure of reliability realizes High Pressure Hydrogen
The fast opening and closing of environmental cabinet, effectively shortens test period, improves test efficiency and also mentions while having fast opening and closing function
The reliability and durability of equipment have been risen, there is remarkable advantage.
The vacuum cavity constituted between collet 38 and cylinder 39 in the present invention, not only can be by avoiding because inside cylinder 39
Good heat insulation function is realized in test gas atmospheric environment heat transfer to the periphery, is also equipped with on-line real time monitoring equipment health status
Function.If cylinder 39 is cracked during military service, hydrogen will be leaked into vacuum cavity, be arranged on vacuum cavity
Hydrogen gas sensor 11 will timely respond to and issue sound-light alarm, while trigger emergency braking system, effective guarantee equipment and people
Member's safety.
The above is only specific implementation case of the invention, is not intended to limit the present invention in any form,
Although the present invention is disclosed as above with preferable case study on implementation, however, it is not intended to limit the invention, any skill for being familiar with this profession
Art personnel, without departing from the scope of the present invention, when the structure and technology contents using the disclosure above make it is certain
Change or modify and become the equivalence enforcement case of equivalent variations.It is served only for for example, the present invention does not limit with hydrogen as test
Medium is equally applicable to the test(ing) mediums such as hydrogen sulfide gas, natural gas and hydrogen gas mixture.In every case without departing from the technology of the present invention
The content of scheme, according to the technical essence of the invention to any simple modification made by the above case study on implementation, equivalent variations and repair
Decorations, still fall within the scope of technical solution of the present invention.
Claims (6)
1. the fast-open type high pressure hydrogen environment fatigue of materials method for testing performance of stationary seal, which is characterized in that be based on stationary seal
Fast-open type high pressure hydrogen environment fatigue of materials performance test apparatus, no setting is required, and high/low temperature high pressure can be realized in movable sealing structure
Under hydrogen environment material height week or high-cycle fatigue test, the test method specifically includes the following steps:
Step A: installation sample removes left rectangle press box and right rectangle press box first, then removes environmental cabinet top cover, separates ring
Border case top cover and environmental cabinet bottom cover, are completely exposed the sample installation position on environmental cabinet bottom cover outside；Sample is installed, then
The counterweight connecting with acceleration transducer is connected on sample；
Step B: frequency sweep also needs to carry out sinusoidal vibration frequency sweep before starting formal fatigue test, to determine by counterweight and sample
The intrinsic frequency of the resonant component of composition；Vibrating Load in the horizontal direction is applied to environmental cabinet bottom cover by vibration excitor, makes ring
It is sinusoidal vibration in the horizontal direction that with constant acceleration, increasing frequency simple harmonic motion, which occurs, for border bottom lid, using logarithm
Frequency sweep determines first three rank intrinsic frequency of resonant component by the crest value in the feedback signal of acceleration transducer；
Step C: filling low pressure high-purity gas, i.e., on closure environmental cabinet top cover to environmental cabinet bottom cover, then left rectangle press box and
Right rectangle press box buckles into environmental cabinet respectively, so that environmental cabinet top cover links into an integrated entity with environmental cabinet bottom cover, starts vacuum pump to folder
The inner cavity of set is vacuumized, after vacuumizing, close valve, it is subsequent again test when need not vacuumize again, then, open
Dynamic vacuum pump vacuumizes the inner cavity of cylinder and system pipeline, is then connected to hydrogen cylinder, utilizes the pressure hydrogen in hydrogen cylinder
Gas replaces the inner cavity of cylinder several times, until the hydrogen purity of cylinder lumen reaches test requirements document, at this point, filling out in cylinder
Full of low pressure high pure hydrogen gas；
Step D: temperature adjustment, i.e. starting refrigeration heater carry out temperature adjustment to cylinder lumen gas, set until test gas medium reaches
Fixed test temperature；
Step E: pressurization, i.e. starting booster is slowly pressurized the intracorporal gas of cylinder, until test gas medium reaches and sets
Fixed test pressure；During pressurization and follow-up test, heater of freezing is still in working condition, to the intracorporal high pressure gas of cylinder
Temperature is finely adjusted, it is ensured that sample is in the high pressure, high purity hydrogen environment under set temperature；
Step F: testing fatigue, i.e. starting vibration excitor drive environment bottom cover rim horizontal direction make simple harmonic motion, and loading frequency takes
For first natural frequency obtained in step B, so that counterweight be forced to generate resonance in the horizontal direction；The upper end of sample is then
Cyclic fatigue load is born under the alternation inertia force effect of counterweight and makees back and forth to move back and forth, and the size of the fatigue load can lead to
The quality m combination Newton's second law F=ma for crossing acceleration a and counterweight that acceleration transducer measures is automatically processed through industrial personal computer
And it shows and records；During test, the industrial personal computer also data and fatigue load of record all the sensors acquisition in real time are followed
Ring number, while acceleration transducer signals are analyzed in real time, so that driving frequency is tracked resonant component intrinsic frequency, keeps resonance
State；When the first natural frequency of acceleration transducer response reduces by 5% relative to initial value, illustrate that sample starts to split
Line fails, and terminates fatigue test at this time；Or when test cycle number reaches setting value, fatigue test can also be terminated；
Sample fatigue life cycle experienced and fatigue load are recorded simultaneously；
Step G: pressure release is risen again, i.e. unlatching blow valve purges to remove system to system decompression, and using low-pressure argon
The hydrogen of system residual；Then system temperature is reverted to by room temperature by refrigeration heater；
Step H: taking out sample, that is, removes left rectangle press box and right rectangle press box, isolating environment case top cover and environmental cabinet bottom cover, take
Sample out；The fast-open type high pressure hydrogen environment fatigue of materials performance test apparatus of the stationary seal, including environment tank module, gas source
Module, booster, vacuum pump, heat exchange module and industrial personal computer；
The environment tank module is by environmental cabinet top cover, environmental cabinet bottom cover, left rectangle press box, right rectangle press box, heat exchange bend pipe, acceleration
Spend sensor, counterweight, load transducer, pedestal and vibration excitor composition；The environmental cabinet top cover includes cylinder, collet and heat-insulated pottery
Porcelain plate, the top of the collet are equipped with aperture for connecting hydrogen gas sensor, and hydrogen gas sensor is for real-time watch device health
Situation, the lower end of collet are then equipped with the aperture for vacuumizing；The cylinder is located at collet inner cavity；Collet internal diameter is greater than outside cylinder
Diameter forms cavity to the two, accompanies thermal insulation ceramics plate along axial direction between collet and cylinder, is additionally provided between collet and cylinder quiet
Sealing structure simultaneously realizes connection by screw；The upper end of the environmental cabinet bottom cover be equipped with rubber o-ring radial direction static seal component with
Cylinder constitutes confined space, and the intermediate setting ladder of environmental cabinet bottom cover is used for the positioning of left and right rectangle press box, environmental cabinet bottom cover
Bottom end setting convex guide post is simultaneously matched with the spill guide rail on the pedestal for providing simple harmonic oscillation space；The environmental cabinet bottom
Cover rim convex guide post is axially connected to generate simple harmonic oscillation with vibration excitor, and equipped with for the heat exchange bend pipe that is placed in cylinder lumen
The intake channel and exit passageway and corresponding air inlet and venthole being connected；The environmental cabinet bottom cover is also provided at center
Through-hole is used for the extraction of signal wire, and the top of central through hole connects load transducer；The lower end center of the load transducer
Portion is connect with acceleration transducer, and the upper end of load transducer is equipped with threaded post for connecting sample, the other end of sample and institute
The threaded post stated on counterweight is connected, and the upper end of counterweight is then equipped with acceleration transducer；The environmental cabinet top cover and environmental cabinet bottom
Connection is realized to undertake the axial load of inner barrel gas generation by left rectangle press box and right rectangle press box between lid；
The gas source module is made of hydrogen cylinder, argon bottle and corresponding valve；The exhaust outlet of the exhaust outlet of hydrogen cylinder, argon bottle
Pass through hydrogen source valve, argon gas source valve respectively, then summarizes the air inlet phase accessed after gas source total valve with the booster
Even；The gas outlet of booster successively with gas outlet valve, boost section hose, environmental cabinet valve, pressure sensor, environmental cabinet bottom cover
Air inlet/outlet is connected；The vacuum pump is successively connected with vacuum sensor, vacuum line valve, and vacuum line valve is respectively connected to very
Dead band hose and boost section hose, for being vacuumized to the cavity constituted between environmental cabinet inside and collet and cylinder；Vacuum
The other end of section hose is connected through extraction valve with the aperture for vacuumizing set on collet；The blow valve is respectively connected to
Vacuum zone hose and boost section hose are stated, the blowdown pressure letdown for control test system；Aforementioned all hoses are mainly used for equipment
The buffer shock-absorbing of the connecting line of whole device when making simple harmonic oscillation；
The heat exchange module includes passing through the sequentially connected refrigeration heater of process pipeline, liquid input section hose, the environmental cabinet bottom
The intake channel that covers, the heat exchange bend pipe, the exit passageway on the environmental cabinet bottom cover and liquid section hose out, for that will freeze
The heat transferring medium that heater generates, which is transferred to inside environmental cabinet, to exchange heat, and realizes required high temperature/low-temperature test environment；
The industrial personal computer is for controlling the operation of equipment and all valves such as booster, vacuum pump, vibration excitor and refrigeration heater
The unlatching of door；Industrial personal computer and pressure sensor, acceleration transducer, vacuum sensor, temperature sensor, load transducer are equal
It is connected by signal, carries out signal acquisition.
2. according to test method described in claim 1, which is characterized in that need to only change the step the counterbalance mass in B, can adjust
The loading frequency of sample testing fatigue.
3. according to test method described in claim 1, which is characterized in that need to only change the hydrogen in step C into argon gas, Ji Keshi
The height week of material or high frequency fatigue test under existing high/low temperature high pressure argon gas environment.
4. test method according to claim 1, which is characterized in that the sample is pole sample, and in sample marking distance
The side of section is provided with notch.
5. test method according to claim 1, which is characterized in that the rate of the logarithm frequency sweep is 0.5 oct/min.
6. test method according to any one of claims 1 to 4, which is characterized in that the acceleration transducer uses
Cr-Ni alloy material with resistant to hydrogen interference performance is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610505698.1A CN106153479B (en) | 2016-06-28 | 2016-06-28 | The fast-open type high pressure hydrogen environment fatigue of materials method for testing performance of stationary seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610505698.1A CN106153479B (en) | 2016-06-28 | 2016-06-28 | The fast-open type high pressure hydrogen environment fatigue of materials method for testing performance of stationary seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106153479A CN106153479A (en) | 2016-11-23 |
| CN106153479B true CN106153479B (en) | 2019-01-18 |
Family
ID=57350313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610505698.1A Active CN106153479B (en) | 2016-06-28 | 2016-06-28 | The fast-open type high pressure hydrogen environment fatigue of materials method for testing performance of stationary seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106153479B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525762B (en) * | 2017-10-17 | 2023-06-13 | 华能国际电力股份有限公司 | Test device and method for testing adhesiveness of thermally grown oxide film on metal surface |
| CN108444849A (en) * | 2018-03-08 | 2018-08-24 | 西南交通大学 | Synchrotron radiation vacuum/high pressure width-adjustable in situ fatigue test machine and its component |
| CN109100105A (en) * | 2018-08-20 | 2018-12-28 | 江苏大学 | A kind of vibrationfatigue test device and method under high pressure hydrogen environment |
| CN110018060A (en) * | 2019-03-22 | 2019-07-16 | 江苏大学 | A kind of cryogenic high pressure is flushed with hydrogen the fracture toughness test devices and methods therefor under environment |
| CN112540014B (en) * | 2020-12-02 | 2023-12-15 | 安科工程技术研究院（北京）有限公司 | Fatigue test device and method under high-pressure hydrogen atmosphere |
| CN114441104B (en) * | 2022-01-03 | 2022-11-08 | 浙江大学 | Method for testing performance of non-metal sealing piece in high-pressure hydrogen environment |
| CN116793893B (en) * | 2023-04-23 | 2024-03-29 | 华南理工大学 | Hydrogen content testing device and testing method for high-pressure hydrogen-contacting material |
| CN116642776B (en) * | 2023-07-27 | 2024-01-02 | 浙江大学 | Material hydrogen induced cracking testing device and method for high-pressure hydrogen environment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006349487A (en) * | 2005-06-15 | 2006-12-28 | Kobe Steel Ltd | Testing machine of mechanical characteristics |
| CN101236138A (en) * | 2008-03-06 | 2008-08-06 | 浙江大学 | Hydrogen storing container hydrogen environment fatigue test system |
| CN101403669A (en) * | 2008-11-12 | 2009-04-08 | 同济大学 | Gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel |
| CN101706395A (en) * | 2009-11-18 | 2010-05-12 | 南京工业大学 | Device for measuring hydrogen embritllement sensitivity of materials in low-temperature environment |
| US20120055258A1 (en) * | 2010-09-03 | 2012-03-08 | Ut-Battelle, Llc | Apparatus and Method for Fatigue Testing of a Material Specimen in a High-Pressure Fluid Environment |
| CN202204733U (en) * | 2011-09-03 | 2012-04-25 | 浙江大学 | Testing machine for testing durability of material under high-pressure hydrogen circumstance |
| CN202267626U (en) * | 2011-10-21 | 2012-06-06 | 浙江大学 | Self-balanced high pressure gas environmental material testing machine loading device |
| CN104897476A (en) * | 2015-06-10 | 2015-09-09 | 合肥通用机械研究院 | Device for testing material properties in high-temperature hydrogen environment |
-
2016
- 2016-06-28 CN CN201610505698.1A patent/CN106153479B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006349487A (en) * | 2005-06-15 | 2006-12-28 | Kobe Steel Ltd | Testing machine of mechanical characteristics |
| CN101236138A (en) * | 2008-03-06 | 2008-08-06 | 浙江大学 | Hydrogen storing container hydrogen environment fatigue test system |
| CN101403669A (en) * | 2008-11-12 | 2009-04-08 | 同济大学 | Gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel |
| CN101706395A (en) * | 2009-11-18 | 2010-05-12 | 南京工业大学 | Device for measuring hydrogen embritllement sensitivity of materials in low-temperature environment |
| US20120055258A1 (en) * | 2010-09-03 | 2012-03-08 | Ut-Battelle, Llc | Apparatus and Method for Fatigue Testing of a Material Specimen in a High-Pressure Fluid Environment |
| CN202204733U (en) * | 2011-09-03 | 2012-04-25 | 浙江大学 | Testing machine for testing durability of material under high-pressure hydrogen circumstance |
| CN202267626U (en) * | 2011-10-21 | 2012-06-06 | 浙江大学 | Self-balanced high pressure gas environmental material testing machine loading device |
| CN104897476A (en) * | 2015-06-10 | 2015-09-09 | 合肥通用机械研究院 | Device for testing material properties in high-temperature hydrogen environment |
Non-Patent Citations (1)
| Title |
|---|
| 基于疲劳寿命分析的高压氢环境箱材料适用性研究;周池楼 等;《压力容器先进技术——第八届全国压力容器学术会议论文集》;20131231;332-338页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106153479A (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106018139B (en) | The fast-open type high pressure hydrogen environment fatigue of materials performance test apparatus of stationary seal | |
| CN106153479B (en) | The fast-open type high pressure hydrogen environment fatigue of materials method for testing performance of stationary seal | |
| CN104897472B (en) | The experimental rig of multi-functional pressure differential High Pressure Hydrogen and material compatibility | |
| CN202533247U (en) | Apparatus for testing durability of cylinder valve | |
| CN108612890A (en) | A kind of safety monitoring system of family's fuel gas pipeline | |
| CN101922990B (en) | Self-operated micropressure controller | |
| CN111927752B (en) | Diaphragm compressor fault diagnosis instrument | |
| CN208564538U (en) | High-pressure gas well wellbore effusion face automated watch-keeping facility | |
| CN108956052A (en) | A kind of rubber seal method for testing performance of resistance to carbon dioxide | |
| CN203519430U (en) | Sealing device for water pressure test of gas cylinder in water jacket method | |
| CN110660496B (en) | Real-time monitoring system for rupture and failure of cladding for high-temperature mandrel test | |
| CN113324713A (en) | Pressure container sealing inspection system and detection method | |
| CN212159140U (en) | Two oil sources of pushing away pressurization experimental apparatus | |
| CN209356375U (en) | A kind of rubber o-ring corrosion tester | |
| CN108760464B (en) | Method and device for realizing positive and negative pressure alternating control of fuel tank | |
| CN203376123U (en) | Testing device for detecting air tightness of piston | |
| CN110242866A (en) | Corrugated stainless steel tubing hybrid intelligent leakage detection method based on wireless sensor linkage | |
| US20220349780A1 (en) | Measuring system and measuring method for vehicle engine | |
| CN205090191U (en) | Can take and press device of changing high -pressure oil gas storage tank jar mouth and connecting | |
| CN208750092U (en) | A kind of safety management system of refrigeration system | |
| CN114264551B (en) | Explosion test method and explosion test system for pressure vessel | |
| CN210802816U (en) | Air cylinder air pressure detection gauge | |
| CN206905977U (en) | For detecting the detection device of gas braking joint air-tightness | |
| CN114323482A (en) | Detection device | |
| CN101968392B (en) | High-pressure isolation device for pressure transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |