CN103278390A - Material testing device under high-pressure hydrogen environment based on ionic liquids and operation method - Google Patents

Material testing device under high-pressure hydrogen environment based on ionic liquids and operation method Download PDF

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CN103278390A
CN103278390A CN2013102057743A CN201310205774A CN103278390A CN 103278390 A CN103278390 A CN 103278390A CN 2013102057743 A CN2013102057743 A CN 2013102057743A CN 201310205774 A CN201310205774 A CN 201310205774A CN 103278390 A CN103278390 A CN 103278390A
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hydrogen
ionic liquid
pressure
cap
gas environment
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CN2013102057743A
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CN103278390B (en
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郑津洋
花争立
欧可升
赵永志
周池楼
刘骁
李静媛
施建峰
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浙江大学
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Abstract

The invention relates to a testing technique of mechanical properties of materials, in order to provide a material testing device under a high-pressure-hydrogen environment based on ionic liquids and an operation method. A high-pressure hydrogen environment box of the device is internally provided with a cylindrical sample support; the lower end of a loading rod is connected with a power output device of a host machine, and the upper end of the loading rod penetrates through an end cover, and extends into the sample support to be connected with a sample fixture; the ionic liquids are filled in an internal space below an open pore in the top of the sample support; a balance cavity is arranged at the bottom of the end cover, and is composed of an extending section of the tail end of the end cover, a piston connected with the loading rod and a seal bottom cover of the balance cavity; and the loading rod is provided with a load sensor. According to the invention, the balancing cavity and the high-pressure hydrogen environment box transfer pressure by utilizing the ionic liquids, and the hydrogen leakage hazard generated when the pressure is transferred by using hydrogen is prevented; and high-pressure dynamic seal elements, rather than high-pressure hydrogen, in the device, are all in contact with the ionic liquids, thus hydrogen leakage is prevented, and the device safety is improved.

Description

Based on material test device and method of operating under the High Pressure Hydrogen environment of ionic liquid

Technical field

The invention belongs to material mechanical performance testing apparatus development field, particularly a kind of based on material test device and method of operating under the High Pressure Hydrogen environment of ionic liquid.

Background technology

Along with becoming increasingly conspicuous and the continuous aggravation of environmental pollution of energy crisis, the exploration paces to new forms of energy have all been stepped up in countries in the world.Hydrogen Energy with its various, clean environmental protection in source, can store and advantage such as renewable, can satisfy the requirement of resource, environment and sustainable development simultaneously, be the secondary energy that have development potentiality future.In the process that Hydrogen Energy is used, hydrogen is many to be stored and transports with high voltage style.In order to satisfy the demand of vehicle continual mileage, the pressure of high-pressure hydrogen storing reached 70 MPa and more than.Yet, for the long-term material that directly contacts with high pressure hydrogen, deterioration in various degree can appear in its performance, as toughness reduction, crack growth rate quickening, degradation under fatigue lifetime, equipment catastrophic failure in cycle designed life be can cause when serious, the person and property safety jeopardized.

In order to estimate the permanance of different materials under the High Pressure Hydrogen environment, obtain to can be used for accordingly instructing the mechanical performance data of storage hydrogen, defeated hydrogen production device design, effective method is to test at existing conventional material testing machine for mechanical properties main frame butt joint hydrogen gas environment case.Yet countries in the world all are faced with following technical barrier at present in the performance history of this kind equipment:

(1) to fill hydrogen slow for the hydrogen gas environment case, tests length consuming time.Because hydrogen is inflammable, explosive, adopts pneumatic hydrogen supercharge pump to come the hydrogen gas environment case is filled usually.Yet this type of supercharge pump is along with the lifting of specified maximum top hole pressure, and corresponding flow reduces gradually, the hydrogen gas environment case is pressurized to test pressure (100 ~ 200 MPa), generally wants a few hours, and test efficiency is lower.

(2) real load that is applied on the sample can't be measured comparatively accurately.At present, for the load transducer of measuring load two kinds of method for arranging are arranged: a kind of is to place hydrogen gas environment case inside, namely built-in; Another kind is mounted in the environmental cabinet outside, is called external.The sensitive element of built-in load transducer can be influenced by high pressure hydrogen, and in use for some time, performances such as its resistance will change, and cause the measurement result distortion.The numerical value that the external load transducer is measured has comprised the influence of high pressure dynamic sealing place (load bar seal with O type circle between) friction force, and this friction force is along with the time changes, can't numerical value on it is simply rejected.

(3) high pressure dynamic sealing can't guarantee that hydrogen does not have leakage, causes potential safety hazard.Hydrogen is the gas that very easily leaks, and inflammable, explosive.The design pressure of hydrogen gas environment case is generally 100 ~ 200 MPa.In existing test unit, high pressure hydrogen directly contacts with the sealing of O type circle.When carrying out the fatigue of materials performance test, load bar is wanted constantly with between the sealing of O type circle relative to-and-fro movement to take place, and the high pressure hydrogen that directly contacts with the sealing of O type circle easily leaks, and has big potential safety hazard.

(4) hydrogen can be to the acting force of load bar generation up to several tons in the hydrogen gas environment case, and when sample fracture, this part acting force produces enormous impact to the test unit main frame, reduces its control accuracy and life-span.

Propose in the patent [201110259252.2] a kind of hollow type load bar inside be sticked the method for load sensitive element overcome kinetic force of friction and high pressure hydrogen to sample on the real load influence of measuring.But because load bar deflection in process of the test is very little, this just causes load sensitive element measurement sensitivity lower; And this paster mode need be finished at the scene, and versatility is relative with precision relatively poor.The testing machine that proposes in the patent [201110259252.2] exists and fills slow, the consuming time length of hydrogen, and the problem of easily leaking with high pressure hydrogen that the sealing of O type circle directly contacts.

For solving above-mentioned technical barrier, can in existing test unit, introduce a kind of liquid of satisfied test basic demand, utilize the lower compressibility coefficient of liquid that hydrogen in the hydrogen gas environment case is realized pressurization fast, raise the efficiency; Can isolate contacting of the sealing of built-in load transducer and O type circle and high pressure hydrogen by liquid in addition, prevent that load transducer is subjected to the influence of high pressure hydrogen, and can avoid the leakage of O type circle sealing place hydrogen to a certain extent.

Ionic liquid refers to be also referred to as watery fusion salt in room temperature or near presenting salt liquid, that be made up of zwitterion fully under the room temperature.Ionic liquid is tasteless, do not fire, and its vapour pressure is extremely low, and therefore volatilization hardly under the normality can be used for the high vacuum system or do not allow in the occasion of volatilization.The hydrogen purity in the environmental cabinet is general in the material test device under the High Pressure Hydrogen environment requires to reach 99.999% and above level.Therefore, if want to add liquid medium to overcome the technical deficiency in the existing environmental cabinet in the hydrogen gas environment case, ionic liquid is desirable selection.

Summary of the invention

The technical problem to be solved in the present invention is, overcomes current deficiency of the prior art, proposes a kind of based on material test device and method of operating under the High Pressure Hydrogen environment of ionic liquid.

Be the technical solution problem, solution of the present invention is:

Provide a kind of based on material test device under the High Pressure Hydrogen environment of ionic liquid, comprise the main frame with PTO, the hydrogen gas environment case that design pressure is 100 ~ 200 MPa, pneumatic hydrogen supercharge pump, vacuum pump, hydrogen cylinder group and control system; The hydrogen gas environment case is made up of environmental cabinet casing and the bottom head covers of tight engagement, and columnar sample mount is established in its inside; The sample mount bottom is connected with end cap, and its top is provided with the perforate for the clamping sample, and the specimen holder and this perforate that are positioned at sample mount inside are oppositely arranged; The lower end of load bar connects the PTO of main frame, and its upper end is run through end cap and stretched in the sample mount and links to each other with specimen holder; In the inner space below the sample mount top drilling, be loaded with ionic liquid; The bottom of end cap is provided with counter balance pocket, is made of the terminal extension of end cap, the piston that connects load bar and counter balance pocket sealing bottom; Establish the ionic liquid interface on splendid attire ionic liquid and the chamber wall in the counter balance pocket, the vertical direction at load bar center is established the ionic liquid passage, and the one end opening is in counter balance pocket, and the other end is opened in the sample mount; Establish load transducer on the load bar, the inner member of load transducer is covered by insulating coating, and described ionic liquid floods the O type circle seal element between load transducer and load bar and the end cap; Establish on the end cap and draw lead channels and gas interface, gas interface one end links to each other with the gas passage that stretches into sample mount, and the other end joins by pipeline and pneumatic hydrogen supercharge pump and vacuum pump.

Among the present invention, the sectional area that stretches into the load bar counterpart in the sample mount is identical to the active area of piston with the interior ionic liquid of counter balance pocket.

Among the present invention, the ionic liquid surface arranges the unsteady disk of polythene material in the described sample mount, and floating between disk and load bar and the sample mount is clearance fit.

Among the present invention, end cap is provided with for observing the atmosphere communication passage that the monitoring ionic liquid leaks, and the atmosphere communication passage is connected to the cavity of the piston opposite side relative with counter balance pocket.

Among the present invention, also comprise ionic liquid storage device and Pneumatic liquid supercharge pump, be connected to the ionic liquid interface by pipeline successively.

Among the present invention, also comprise the argon bottle group that is connected to gas interface by pipeline.

Among the present invention, described sample mount is cylindrical shape, and the perforate at its top has two, is flute profile.

Among the present invention, described environmental cabinet casing and end cap be by bolted joints, and sample mount bottom and end cap are by being threaded.

Among the present invention, also have two vertical guide upright posts, on lead ring flat-plate and environmental cabinet back up pad provide on guide upright post, the upper and lower of hydrogen gas environment case joins with last guiding ring flat-plate and environmental cabinet back up pad respectively; Establish environmental cabinet casing lifting hydraulic cylinder on the last guiding ring flat-plate.

The present invention further provides the method for operating based on material under the High Pressure Hydrogen environment of ionic liquid of utilizing aforementioned means, may further comprise the steps:

(1) separates hydrogen gas environment box body and end cap, sample is clamped between sample mount top drilling and the specimen holder; After configuring the ionic liquid liquid level, use bolt tight engagement casing and end cap again;

(2) take out air in the hydrogen gas environment case with vacuum pump, then carry out the several times displacement with argon gas, carry out the several times displacement with hydrogen again, hydrogen purity reaches requirement in the hydrogen gas environment case; Then, with pneumatic hydrogen supercharge pump the hydrogen gas environment case is carried out hydrogen and fill, reach the transitional pressure of setting until pressure;

(3) utilize the Pneumatic liquid supercharge pump in the hydrogen gas environment case, to fill ionic liquid, the continuous compression hydrogen of ionic liquid, Hydrogen Vapor Pressure and ionic liquid pressure rise gradually until reaching test pressure, stop pressurization;

(4) begin test, record data; After the off-test, the high pressure hydrogen in the hydrogen gas environment case of at first releasing; Then, with vacuum pump remaining hydrogen in the hydrogen gas environment case is found time, carry out the several times displacement with argon gas again; Separate hydrogen gas environment box body and end cap, take out sample.

With respect to prior art, beneficial effect of the present invention is:

The supercharging mode that adopts pneumatic hydrogen supercharge pump to combine with the ionic liquid pressurization, reduced the requirement to the specified maximum top hole pressure of pneumatic hydrogen supercharge pump, the corresponding lifting of its corresponding flow, pneumatic hydrogen supercharge pump pressure process is obviously accelerated, and it is consuming time very short based on the ionic liquid pressure period of Pneumatic liquid supercharge pump, therefore, whole hydrogen gas environment case can significantly shorten pressing time; Load transducer is flooded by ionic liquid, has isolated contacting of high pressure hydrogen and load transducer, avoids it influenced by high pressure hydrogen; Utilize ionic liquid to realize the pressure transmission between counter balance pocket and the hydrogen gas environment case, avoided use hydrogen to transmit the existing hydrogen gas leakage hidden danger of pressure; All high pressure dynamic sealing elements all contact but not high pressure hydrogen with ionic liquid in the device, have avoided hydrogen gas leakage to a certain extent, have improved the device security; Selected ionic liquid has the color of easy identification, if leak at the high pressure dynamic sealing place, can very fast discovery leak and preliminary definite leak position.

Description of drawings

Fig. 1 is general arrangement synoptic diagram of the present invention;

Fig. 2 is hydrogen gas environment case and cut-away view thereof;

Fig. 3 is the grooved perforate of being located at the sample mount top.

Reference numeral among the figure is: guide upright post 1, environmental cabinet casing lifting hydraulic cylinder 2, last guiding ring flat-plate 3, hydrogen gas environment case 4, environmental cabinet back up pad 5, hydrogen cylinder group 6, argon bottle group 7, pneumatic hydrogen supercharge pump 8, main frame 9, ionic liquid storage device 10, Pneumatic liquid supercharge pump 11, control system 12, vacuum pump 13, environmental cabinet casing 14, cylindrical shape sample mount 15, specimen holder 16, load bar 17, gas passage 18, ionic liquid passage 19, end cap 20, gas interface 21, piston 22, ionic liquid interface 23, counter balance pocket sealing bottom 24, counter balance pocket 25, atmosphere communication passage 26, O type circle sealing 27, draw lead channels 28, load transducer 29, ionic liquid 30, disk 31 floats, sample 32, slot-like opening 33.

Embodiment

In the present embodiment based on material test device under the High Pressure Hydrogen environment of ionic liquid, as shown in Figure 1, comprise hydrogen gas environment case 4, have the main frame 9 that power is exported, hydrogen cylinder group 6 and the pneumatic hydrogen supercharge pump 8 of high pressure hydrogen are provided, the ionic liquid storage device 10 of high-pressure ion liquid and Pneumatic liquid supercharge pump 11 are provided, are used for the vacuum pump 13 that hydrogen gas environment case 4 vacuumizes, the argon bottle group 7 that is used for displacement, and the control system 12 of whole test device etc.Hydrogen gas environment case 4 is by environmental cabinet back up pad 5 fixed supports, its open and closed by environmental cabinet casing lifting hydraulic cylinder 2, on lead ring flat-plate 3 and guide upright post 1 realize jointly.

As shown in Figure 2, hydrogen gas environment case 4 is made up of environmental cabinet casing 14 and end cap 20, and the two realizes tight engagement by bolt.Load bar 17 lower ends of transmitting axial load connect the PTO of main frame 9, and end cap 20 is run through in the upper end, and gos deep into linking to each other with specimen holder 16 in the environmental cabinet casing 14, for sample 32 provides axial force.Cylindrical shape sample mount 15 bottoms and end cap 20 are by being threaded, and two slot-like opening 33 are offered in two relative positions at its top, to make things convenient for the clamping of sample 32; In cylindrical shape sample mount 15 inside, the space of slot-like opening below 33, splendid attire ionic liquid 30, liquid flood load transducer 29 and the sealing of the O type circle between load bar 17 and the end cap 20 27 that is connected with load bar 17.Load transducer 29 inner members are covered by insulating coating.Be the liquid fluctuation of avoiding load bar 17 axially-movables to cause, ionic liquid 30 surfaces arrange the unsteady disk 31 of polythene material.Floating between disk 31 and load load bar 17 and the cylindrical shape sample mount 15 is clearance fit.Counter balance pocket 25 is arranged at end cap 20 bottoms, is made of the piston 22 that connects load bar 17 and counter balance pocket sealing bottom 24; Ionic liquid enters by ionic liquid interface 23 and is full of counter balance pocket 25, and enter in the cylindrical shape sample mount 15 via the ionic liquid passage 19 at load bar 17 centers, thereby has guaranteed that counter balance pocket 25 keeps identical constantly with pressure in the hydrogen gas environment case 4.In addition, ionic liquids are identical to the active area of piston 22 in the sectional area that stretches into load bar 17 counterparts in the hydrogen gas environment case 4 and the counter balance pocket 25.Therefore, the high-pressure fluid in the hydrogen gas environment case 4 equates the impact that 17 pairs of main frames of load bar 9 produce when having avoided sample 32 fractures all the time to the downward thrust of load bar 17 effects to the thrust that makes progress that load bar 17 produces with counter balance pocket 25 interior ionic liquids.Also be provided with gas interface 21 on the end cap 20, draw lead channels 28, and be used for observing the atmosphere communication passage 26 that the monitoring ionic liquid leaks.Wherein, gas interface 21 links to each other with the gas passage 18 that stretches into cylindrical shape sample mount 15.

Described method of operating based on material test device under the High Pressure Hydrogen environment of ionic liquid, as illustrated in fig. 1 and 2, at first start environmental cabinet casing lifting hydraulic cylinder 2, isolating environment box body 14 and end cap 20, slot-like opening 33 is exposed to outside the environmental cabinet casing 14 fully, the good sample 32 of clamping and make the liquid level of ionic liquid 30 be in the position of just in time flooding load transducer 29 after, with bolt tight engagement environmental cabinet casing 14 and end cap 20; Secondly with the vacuum pump 13 interior air of hydrogen gas environment case 4 of finding time, then be communicated with argon bottle group 7 and pneumatic hydrogen supercharge pump 8, utilize argon gas that environmental cabinet casing 14 is carried out the several times displacement, connect hydrogen cylinder group 6 and pneumatic hydrogen supercharge pump 8 again, utilize low pressure hydrogen that environmental cabinet casing 14 is carried out the several times displacement, the hydrogen purity in environmental cabinet casing 14 reaches testing requirements; Again, adopt and carry out high pressure hydrogen in 8 pairs of hydrogen gas environment casees 4 of pneumatic hydrogen supercharge pump and fill, reach the transitional pressure of setting until hydrogen gas environment case 4 internal pressures; Then, utilize Pneumatic liquid supercharge pump 11 to fill ionic liquid in hydrogen gas environment case 4, ionic liquid constantly compresses high pressure hydrogen, and hydrogen and ionic liquid pressure rise gradually, reach test pressure until its pressure, stops pressurization; At last, begin test, record data.After the off-test, the high pressure hydrogen in the hydrogen gas environment case 4 of at first releasing; Then, with vacuum pump 13 hydrogen in the hydrogen gas environment case 4 is found time, carry out the several times displacement with argon gas again; At last can the isolating environment box body 14 with end cap 20, take out sample 32.

As mentioned above, the supercharging mode that hydrogen gas environment case 4 adopts pneumatic hydrogen supercharge pump 8 to combine with the ionic liquid pressurization, with respect to traditional pressuring method that only adopts pneumatic hydrogen supercharge pump, this method has reduced the requirement to pneumatic hydrogen supercharge pump 8 specified maximum top hole pressures.For with a series of pneumatic hydrogen supercharge pumps, specified maximum top hole pressure reduces, the corresponding lifting of its corresponding flow, thereby pneumatic hydrogen supercharge pump pressure process obviously accelerate, and consuming time very short based on the ionic liquid pressure period of Pneumatic liquid supercharge pump 11.Therefore, whole hydrogen gas environment case can significantly shorten for 4 pressing times.For example, be the hydrogen gas environment case 4 of 100 MPa for maximum working pressure (MOP), suppose that pneumatic hydrogen supercharge pump 8 fills high pressure hydrogen after the transition pressure P, the hydrogen volume in the hydrogen gas environment case 4 is V.And through ionic liquid pressurization compression back (pressure in the hydrogen gas environment case 4 reaches 100 MPa), the volume of hydrogen is (2/3) V, and namely the volume of the ionic liquid that fills by Pneumatic liquid supercharge pump 11 in the hydrogen gas environment case 4 is (1/3) V.Then test the hydrogen quality m that fills in the mesohigh hydrogen environment case 4 and equal 50.5 * (2/3) V, (hydrogen is 50.5 kg/m in 100 MPa, 15 ℃ state lower density 3).Can get as calculated, when above-mentioned quality is the volume of the hydrogen of m when being V, corresponding density is 33.7 kg/m 3, corresponding Hydrogen Vapor Pressure (being transitional pressure P) is about 55 MPa.Therefore, the specified maximum top hole pressure of pneumatic hydrogen supercharge pump 8 gets final product greater than 55 MPa, and with respect to traditional pressuring method that only adopts pneumatic hydrogen supercharge pump, pneumatic hydrogen supercharge pump 8 specified maximum top hole pressures are reduced to 55 MPa by 100 MPa.Thereby, not only the average discharge of pneumatic hydrogen supercharge pump can bigger lifting, and pneumatic hydrogen supercharge pump only needs pressurized with hydrogen to 55 MPa, remaining voltage rise by rate of pressurization relatively very fast Pneumatic liquid supercharge pump 11 finish, whole hydrogen gas environment case can significantly shorten for 4 pressing times.

As shown in Figure 2, load transducer 29 is flooded by ionic liquid 30, has isolated contacting of high pressure hydrogen and load transducer 29, avoids it to be subjected to the influence of high pressure hydrogen; And load transducer 29 is positioned at the upside of load bar 17 first road O type circles sealing 27, avoided its measurement result to be subjected to the influence of kinetic force of friction, guaranteed that the magnitude of load that load transducer 29 records is the real load that is applied on the sample 32.Utilize ionic liquid to realize the pressure transmission between counter balance pocket 25 and the hydrogen gas environment case 4, avoided use hydrogen to transmit the existing hydrogen gas leakage hidden danger of pressure; All high pressure dynamic sealing elements in the device (as O type circle sealing 27) all contact but not high pressure hydrogen with ionic liquid, have avoided hydrogen gas leakage to a certain extent, have improved the device security; Selected ionic liquid has the color of easy identification in the package unit, if leak at the high pressure dynamic sealing place, can also tentatively determine the leak position by observing very fast discovery leakage.

The above, it only is a case study on implementation of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferable case study on implementation, yet be not in order to limit the present invention, any those skilled in the art in not breaking away from the technical solution of the present invention scope, make some change or modification when the structure that can utilize above-mentioned announcement and technology contents and become the equivalent case study on implementation of equivalent variations.

Every content that does not break away from technical solution of the present invention, any simple modification, equivalent variations and modification according to technical spirit of the present invention is done above case study on implementation all still belong in the technical solution of the present invention scope.

Claims (10)

1. one kind based on material test device under the High Pressure Hydrogen environment of ionic liquid, comprises the main frame with PTO, the hydrogen gas environment case that design pressure is 100 ~ 200 MPa, pneumatic hydrogen supercharge pump, vacuum pump, hydrogen cylinder group and control system; It is characterized in that: the hydrogen gas environment case is made up of environmental cabinet casing and the bottom head covers of tight engagement, and columnar sample mount is established in its inside; The sample mount bottom is connected with end cap, and its top is provided with the perforate for the clamping sample, and the specimen holder and this perforate that are positioned at sample mount inside are oppositely arranged; The lower end of load bar connects the PTO of main frame, and its upper end is run through end cap and stretched in the sample mount and links to each other with specimen holder; In the inner space below the sample mount top drilling, be loaded with ionic liquid; The bottom of end cap is provided with counter balance pocket, is made of the terminal extension of end cap, the piston that connects load bar and counter balance pocket sealing bottom; Establish the ionic liquid interface on splendid attire ionic liquid and the chamber wall in the counter balance pocket, the vertical direction at load bar center is established the ionic liquid passage, and the one end opening is in counter balance pocket, and the other end is opened in the sample mount; Establish load transducer on the load bar, the inner member of load transducer is covered by insulating coating, and described ionic liquid floods the O type circle seal element between load transducer and load bar and the end cap; Establish on the end cap and draw lead channels and gas interface, gas interface one end links to each other with the gas passage that stretches into sample mount, and the other end joins by pipeline and pneumatic hydrogen supercharge pump and vacuum pump.
2. device according to claim 1 is characterized in that, the sectional area that stretches into the load bar counterpart in the sample mount is identical to the active area of piston with the interior ionic liquid of counter balance pocket.
3. device according to claim 1 is characterized in that, the ionic liquid surface arranges the unsteady disk of polythene material in the described sample mount, and floating between disk and load bar and the sample mount is clearance fit.
4. according to any described device in the claim 1 to 3, it is characterized in that end cap is provided with for observing the atmosphere communication passage that the monitoring ionic liquid leaks, the atmosphere communication passage is connected to the cavity of the piston opposite side relative with counter balance pocket.
5. according to any described device in the claim 1 to 3, it is characterized in that, also comprise ionic liquid storage device and Pneumatic liquid supercharge pump, be connected to the ionic liquid interface by pipeline successively.
6. according to any described device in the claim 1 to 3, also comprise the argon bottle group that is connected to gas interface by pipeline.
7. according to any described device in the claim 1 to 3, the perforate at described sample mount top has two, is flute profile.
8. according to any described device in the claim 1 to 3, described environmental cabinet casing and end cap be by bolted joints, and sample mount bottom and end cap are by being threaded.
9. according to any described device in the claim 1 to 3, also have two vertical guide upright posts, last guiding ring flat-plate and environmental cabinet back up pad provide on guide upright post, and the upper and lower of hydrogen gas environment case joins with last guiding ring flat-plate and environmental cabinet back up pad respectively; Establish environmental cabinet casing lifting hydraulic cylinder on the last guiding ring flat-plate.
10. the described method of operating based on material test device under the High Pressure Hydrogen environment of ionic liquid of claim 1 is characterized in that, may further comprise the steps:
(1) separates hydrogen gas environment box body and end cap, sample is clamped on the specimen holder; After configuring the ionic liquid liquid level, use bolt tight engagement casing and end cap again;
(2) take out air in the hydrogen gas environment case with vacuum pump, then carry out the several times displacement with argon gas, carry out the several times displacement with hydrogen again, hydrogen purity reaches requirement in the hydrogen gas environment case; Then, with pneumatic hydrogen supercharge pump the hydrogen gas environment case is carried out hydrogen and fill, reach the transitional pressure of setting until pressure;
(3) utilize the Pneumatic liquid supercharge pump in the hydrogen gas environment case, to fill ionic liquid, the continuous compression hydrogen of ionic liquid, Hydrogen Vapor Pressure and ionic liquid pressure rise gradually until reaching test pressure, stop pressurization;
(4) begin test, record data; After the off-test, the high pressure hydrogen in the hydrogen gas environment case of at first releasing; Then, with vacuum pump remaining hydrogen in the hydrogen gas environment case is found time, carry out the several times displacement with argon gas again; Separate hydrogen gas environment box body and end cap, take out sample.
CN201310205774.3A 2013-05-28 2013-05-28 Material testing device under high-pressure hydrogen environment based on ionic liquids and operation method CN103278390B (en)

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CN104880368A (en) * 2015-06-19 2015-09-02 浙江大学 Multifunctional pressure difference type method for testing compatibility of high-pressure hydrogen and materials
CN104897472A (en) * 2015-06-19 2015-09-09 浙江大学 Multifunctional differential pressure tester for compatibility of high pressure hydrogen with material
CN107084882A (en) * 2017-03-29 2017-08-22 浙江工业大学 The portable environmental mechanicses experimental rig of superelevation pressure hydrogen environment
CN107192619A (en) * 2017-03-29 2017-09-22 浙江工业大学 Portable HTHP mechanical testing equipment
CN110095359A (en) * 2019-04-16 2019-08-06 浙江大学 Material fatigue damage test method under high pressure hydrogen loading natural gas environment
CN110221640A (en) * 2019-07-03 2019-09-10 清华大学 A kind of controllable temperature pressure control air seal test platform auxiliary system
CN110220809A (en) * 2019-05-16 2019-09-10 浙江大学 A kind of hydrogen feeding pipe road military service performance testing device and test method

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CN102297807A (en) * 2011-09-03 2011-12-28 浙江大学 Tester for testing durability of material under high-pressure hydrogen environment
CN203275200U (en) * 2013-05-28 2013-11-06 浙江大学 Material testing device under high pressure hydrogen environment based on ionic liquid

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CN102089639A (en) * 2008-07-07 2011-06-08 里尔科技大学 Triaxial cell for the testing of geomaterials in compression and in shear
CN102297807A (en) * 2011-09-03 2011-12-28 浙江大学 Tester for testing durability of material under high-pressure hydrogen environment
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Cited By (11)

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Publication number Priority date Publication date Assignee Title
CN104880368A (en) * 2015-06-19 2015-09-02 浙江大学 Multifunctional pressure difference type method for testing compatibility of high-pressure hydrogen and materials
CN104897472A (en) * 2015-06-19 2015-09-09 浙江大学 Multifunctional differential pressure tester for compatibility of high pressure hydrogen with material
CN104897472B (en) * 2015-06-19 2017-11-24 浙江大学 The experimental rig of multi-functional pressure differential High Pressure Hydrogen and material compatibility
CN107084882A (en) * 2017-03-29 2017-08-22 浙江工业大学 The portable environmental mechanicses experimental rig of superelevation pressure hydrogen environment
CN107192619A (en) * 2017-03-29 2017-09-22 浙江工业大学 Portable HTHP mechanical testing equipment
CN107084882B (en) * 2017-03-29 2019-10-25 浙江工业大学 The portable environmental mechanics experimental rig of superelevation pressure hydrogen environment
CN107192619B (en) * 2017-03-29 2019-10-25 浙江工业大学 Portable high temperature and pressure mechanical testing equipment
CN110095359A (en) * 2019-04-16 2019-08-06 浙江大学 Material fatigue damage test method under high pressure hydrogen loading natural gas environment
CN110095359B (en) * 2019-04-16 2020-05-15 浙江大学 Material fatigue damage test method under high-pressure hydrogen-doped natural gas environment
CN110220809A (en) * 2019-05-16 2019-09-10 浙江大学 A kind of hydrogen feeding pipe road military service performance testing device and test method
CN110221640A (en) * 2019-07-03 2019-09-10 清华大学 A kind of controllable temperature pressure control air seal test platform auxiliary system

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