CN208254975U - A kind of device for axial compression test under high temperature and pressure - Google Patents
A kind of device for axial compression test under high temperature and pressure Download PDFInfo
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- CN208254975U CN208254975U CN201820592000.9U CN201820592000U CN208254975U CN 208254975 U CN208254975 U CN 208254975U CN 201820592000 U CN201820592000 U CN 201820592000U CN 208254975 U CN208254975 U CN 208254975U
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- autoclave body
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Abstract
The utility model discloses a kind of devices for axial compression test under high temperature and pressure, it includes autoclave body and heating furnace, the autoclave body is cylindrical, hollow shape tube structure, the middle part of autoclave body is equipped with bringing-up section bulge loop, it is socketed on the outside of the bringing-up section bulge loop around to cuing open formula heating furnace, pressurizing device is equipped in the upper end of autoclave body, support device is equipped in the lower end of autoclave body, it is equipped with sample in the middle part of the cavity of autoclave body, the filler port being connected with autoclave body inner cavity is equipped on the side wall of the top autoclave body of bringing-up section bulge loop.It is that one kind can adapt to a variety of media and sample, can be tested under high temperature, high pressure, and measurement accuracy requirement is met, and the axial compression test device easy to use and reliable, maintenance cost is low achieves good using effect.
Description
Technical field
The present invention relates to a kind of axial compression test devices, more particularly to one kind is for axial compression test under high temperature and pressure
Device, belong to testing of materials machinery technical field.
Background technique
The mechanics parameters such as elasticity modulus, yield strength, creep rupture strength, breaking strength, the most basic object as material
Constant is managed, is the basic data of many application studies, is widely used in all trades and professions, as human development explores space to depth
It is empty, extend deeply, if deep-sea resources exploitation, Earth look for mine, engineer application is to higher temperature Pressure Development, such as ultra supercritical
Unit, nuclear reactor pressure container etc., the environmental condition faced is harsher, and high temperature and pressure is exactly one of them, answers as research
With material mechanical parameters are indispensability data early period under high temperature and pressure, and data acquisition is needed through the power under high temperature and pressure
Learn test.In terms of the data grasped at present, most of experimental studies are only limited to normal temperature and pressure or under high-temperature pressures, even if portion
Point high temperature and pressure test, temperature, pressure is all relatively low, and the research under real high temperature and pressure extremely lacks, among these the main reason for
It is that relevant test apparatus lacks and test method limits.Reality in terms of data, for the mechanical property under high-temperature and high-pressure conditions
Testing platform includes common triaxiality stressh machine and homemade special pressure testing machine, these testing equipments are answered due to what is be directed to
It is different with environmental condition and requirement, specific as follows in place of coming with some shortcomings for high temperature and pressure test:
(1) conventional general triaxiality stressh machine, heat medium is silicone oil, since burning point limits, heating temperature≤
400 DEG C, therefore equipment is lower using temperature；
(2) general triaxiality stressh machine deformation measurement, which mainly has, fills deformeter and patch two kinds of sides of foil gauge on sample
Formula, both mode advantages directly measure, and measurement data is relatively accurate, but there are sensor installation requirement height, lead troubles etc.
Problem, link is cumbersome slightly to be will fail without paying attention to test, while for sensor protection, also being had to heating pressure medium higher
It is required that because many liquid mediums have oxidation corrosion, under supercriticality to avoid sensor degradation and short circuit, device
It cannot be used for the weak corrosive medium such as water, and water, low concentration salt solution, acid-base solution are the media that we frequently encounter, this is just
Greatly limit the purposes of equipment；
(3) special pressure testing machine, its measurement method of several devices are substantially all common measurements indirectly, pass through calculating
Sample deformations are converted into, guarantee that the key of detection accuracy is to exclude the error of measurement links, although several devices are assembled with position
Displacement sensor tries hard to exclude the error of measurement links, but since sensor is all loaded on outside pressing mechanism, far from sample end, rises
Less than that should have effect, piston rod, mounting seat are deformed in pressure process, polishing head and the pressurize indirect thixotroping shape of rod end surface and displacement
It can not detect, therefore it directly passes through calculating measuring result error and can only be corrected by specific process, although piston rod very greatly
Pedestal deformation can by correction, but correlated parts be coupled generate juxtaposition metamorphose and displacement it is related with installation, with centainly with
Machine cannot be excluded accurately, and it is not continuous in addition correcting, and be carried out only for some characteristic points, and testing experiment is according to reality
Border needs, and has differences between the two；
(4) without adjustment link between special pressure testing machine sample and pressing mechanism, the depth of parallelism leans on sample and pressurization completely
Mechanism guarantees, is actually difficult to accomplish, because processing and assembling link can all have error, cumulative errors are quite big, and this
Error has certain randomness, and the depth of parallelism cannot such as compensate in pressure process, will cause sample local deformation, the deflection measured
Inaccuracy.
Due to apparatus above insufficient and real scientific research there is an urgent need to, invent one kind and overcome problem above, reliable, letter
Just practical new device very it is necessary to.
Summary of the invention
The technical problem to be solved by the present invention is a kind of device for axial compression test under high temperature and pressure is provided, it
It is that one kind can adapt to a variety of media and sample, can be tested under high temperature, high pressure, meets measurement accuracy requirement, use
The axial compression test device convenient and reliable, maintenance cost is low, solves the deficiency of prior art.
The technical solution of the present invention is as follows: a kind of device for axial compression test under high temperature and pressure, it include autoclave body and
Heating furnace, the autoclave body are cylindrical, hollow shape tube structure, and the middle part of autoclave body is equipped with bringing-up section bulge loop, the bringing-up section bulge loop
Outside be socketed with around to cuing open formula heating furnace, be equipped with pressurizing device in the upper end of autoclave body, be equipped with support dress in the lower end of autoclave body
It sets, sample is equipped in the middle part of the cavity of autoclave body, be equipped on the side wall of the top autoclave body of bringing-up section bulge loop and be connected with autoclave body inner cavity
Logical filler port.
The pressurizing device includes nut and pressurizing piston bar, and the nut is connected by the top of screw thread and autoclave body,
It is equipped with hard straight hole in the centre of nut, is equipped with pressurizing piston bar in hole, the lateral wall of the pressurizing piston bar is equipped with and spiral shell
The positive stop lug boss of parent phase cooperation is equipped with pressure ring in the lower section of positive stop lug boss, the lower section pressurizing piston bar and autoclave body of the pressure ring it
Between be equipped with upper seal assembly, the lower end of pressurizing piston bar extend into the cavity of autoclave body, passes through spiral shell on the top of pressurizing piston bar
Line is connected with piston rod pressure head, and the top of the piston rod pressure head is equipped with upper ball ring, is equipped in the centre of piston rod pressure head
LVDT sensor two, the LVDT sensor two are connected with measuring rod one is extended, and extend measuring rod one and are set to pressurizing piston
In the internal cavities of bar, extend measuring rod one bottom end head contacted with the inner wall of pressurizing piston bar, and under pressurizing piston bar
Lateral extent is 3~4mm outside end.
The support device includes that ring flange, lower kettle plug and pedestal, ring flange are threadedly attached in the bottom end of autoclave body,
Pedestal is connect by bolt with ring flange, and the lower kettle plug for protruding into autoclave body inner cavity, the lower kettle plug and kettle are equipped in the top of pedestal
It is equipped with lower seal assembly between body, is equipped with LVDT sensor three in the centre of pedestal, the LVDT sensor three is measured with extension
Bar two is connected, and extends measuring rod two and is set in the internal cavities of lower kettle plug, extends the distal end chip and lower kettle plug of measuring rod two
Inner wall contact, and with lateral extent outside the upper end of lower kettle plug be 3~4mm.
The bottom face of the top end face of the sample and the bottom face plane contact of pressurizing piston bar, sample passes through lower peripheral surface pad
With the top facial plane and sphere-contact of lower kettle plug.
Gap between the lateral wall and autoclave body of the pressurizing piston bar is 1~2mm, the inner sidewall of pressurizing piston bar with prolong
Gap between long measuring rod one is 0.5 mm.
Gap between the lateral wall and autoclave body of the lower kettle plug is 0.5~1.5mm, and the inner sidewall of lower kettle plug and extension are surveyed
Gap between gauge rod two is 0.5 mm.
The side of the piston rod pressure head is fixedly connected with LVDT sensor one, the measurement rod end and spiral shell of LVDT sensor one
Female top surface contact.
The upper outside movable sleeve of the autoclave body is connected to coolant jacket, is connected to lower cooling in the lower outside movable sleeve of autoclave body
Set, the upper coolant jacket is between nut and filler port, and the lower coolant jacket is between ring flange and heating furnace.
A kind of application method for axial compression test device under high temperature and pressure, the method step are as follows: one, test dress
It sets assembling: first placing autoclave body vertically downward with nut connecting pin, lower seal assembly, lower kettle plug are successively then put into autoclave body
It is interior intracavitary, load coolant jacket, ring flange after the completion, next will extend measuring rod two and be packed into the inner hole of lower kettle plug, LVDT
The sensor sensing coil of sensor three is packed into pedestal, in pedestal back-off to lower kettle plug end face, finally with bolt by ring flange
It links together with base combination, the assembling of finishing device lower part；After lower part is installed, it is vertical downward with pedestal to overturn reaction kettle
It places, then above autoclave body inner hole, is sequentially placed into lower peripheral surface pad, sample, upper seal assembly, pressure ring, pressurizing piston bar, wherein
Lower peripheral surface pad using the preceding spherical precision with lower kettle plug to grinding and cleaning, reach can adsorbed state, after the completion of internal, next
Coolant jacket, nut, piston rod pressure head, LVDT sensor one and LVDT sensor two are loaded onto, first will when LVDT sensor two is installed
Extension rod is packed into pressurizing piston bar inner hole, and sensor sensing coil is tightened onto pressurizing piston rod end head after being packed into piston rod pressure head,
Finally LVDT sensor one is installed on piston rod pressure head, experimental rig is completed；Two, experimental rig is integrally put into pressure
In testing machine: dress heating furnace, connection confining pressure control system, piston rod after experimental rig being integrally put into pressure testing machine in place
Upper ball ring is placed on pressure head top, and the test preparation stage completes；Three, experimental stage: pass through confining pressure control system first to high temperature
Axial compression test device injection 0.5MPa test(ing) medium protects sample under high pressure, prevents from aoxidizing in heating process, then start
Heating furnace heats experimental rig, and heating process is by process control；After heating temperature arrives, temperature keep, control pressurer system to
Axial compression test device injection testing medium can start to carry out pressure testing after injection to setting value under high temperature and pressure
Machine initial pressure resets work, and resetting purpose is to deduct the influence of pressure medium and piston rod frictional force in cavity, is pressurizeed
True pressure on to sample, clearing start, and manually control pressure testing machine pressurizing piston and slowly decline, and contact under high temperature and pressure
After axial compression test device, pressure testing machine plus-pressure is gradually increased, due to filling between pressurizing piston bar lower end surface and sample
There are the gaps 2mm or so when sample, and pressurizing piston bar has one section of idle stroke when pushing, when pressure testing machine plus-pressure reaches certain
When degree, piston rod is begun to decline, and one 8 numerical value of LVDT sensor starts significant changes at this time, since idle stroke exists, press pressure
Less, power is the sum of active force and the piston rod frictional force that medium generates at this time, when pressurizing piston bar is tried in pressure for power variation
It tests under machine control and continues to push, when press pressure continues growing 500 ~ 1000N, pressurizing piston bar and sample completely attach to simultaneously pre-add
It carries, pressure testing machine, LVDT sensing data is reset at this time, the control that can be previously set according to test requirements document after clearing
Processing procedure sequence carries out applied voltage test by pressure testing machine, and LVDT sensor data transmission is calculated to pressure testing machine or acquisition in test
Machine obtains sample deformations amount by calculation relational expression, after obtaining sample forces and deformation relationship, so that it may which it is strong that judgement calculates surrender
The mechanics parameters such as degree, creep rupture strength, breaking strength, elasticity modulus.
The calculation relational expression are as follows: Δ L=Δ L1- Δ L2- Δ L3
Wherein: Δ L- sample deformations, Δ L1- LVDT sensor one are displaced, and Δ L2- LVDT sensor two is displaced, Δ L3-
LVDT sensor triple motion.
The beneficial effects of the present invention are: compared with prior art, beneficial effects of the present invention are as follows:
1, due to built-in sensors inside pressing mechanism and using special extension measuring staff by measurement point extend near
Sample both ends, eliminating each link deformation of pressure process pressing mechanism to the maximum extent influences, and greatly improves measurement accuracy, together
When due to directly eliminating the deformation of pressing mechanism using sensor, keep the calibration of device measurement accuracy simpler, only need room temperature mark
Sample compares.
2, pressing mechanism is used in pairs using two groups of ball rings, is compensated to the depth of parallelism, minimize sample and
Pressure rings section is axially inclined to influence test accuracy.
3, the device can cooperate, structure extends to existing as a whole parts with different pressures testing machine
Triaxial compression test machine has bigger practical value.
4, the present apparatus can testing inspection sample it is more various, sample can be metal or nonmetallic.
5, compared with common triaxial compression test machine, the range for testing adaptation is wider, and be adapted to temperature: temperature is higher,
600 DEG C of highest, confining pressure medium is more various, and medium is adapted to the weak erosives liquid such as the indifferent gas such as argon gas and water, due to not
Dedicated deformeter or foil gauge need to be filled, use is easier to be reliable.
6, axial compression test device is used through actual test under high temperature and pressure, and measurement accuracy error reaches test requirements document,
Resolution ratio reaches 0.5 μm, and 3 μm of accuracy, easy to use, reliable performance provides a kind of new test for high temperature and pressure test
Means.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is two combination diagram of pressurizing piston bar of the invention, piston rod pressure head and LVDT sensor；
Fig. 3 is lower kettle plug and LVDT sensor three and base combination schematic diagram of the invention；
Fig. 4 is pressurizing piston bar of the invention, sample, lower peripheral surface pad assembling schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below with reference to this specification attached drawing to this hair
It is bright to be described in further detail.
Embodiment 1: as shown in attached drawing 1~4, a kind of device for axial compression test under high temperature and pressure, it includes kettle
Body 1 and heating furnace 20, the autoclave body 1 are cylindrical, hollow shape tube structure, and the middle part of autoclave body 1 is equipped with bringing-up section bulge loop 24, institute
The outside for stating bringing-up section bulge loop 24 is socketed with around to formula heating furnace 20 is cutd open, and pressurizing device is equipped in the upper end of autoclave body 1, in autoclave body
1 lower end is equipped with support device, sample 11 is equipped in the middle part of the cavity of autoclave body 1, in the side of the top autoclave body 1 of bringing-up section bulge loop 24
Wall is equipped with the filler port 19 being connected with 1 inner cavity of autoclave body.The present apparatus can integrally be placed in pressure testing machine work after being completed
Make on platform, pressure is applied to sample 11 by pressurizing piston bar 4 equal by pressure testing machine, applied voltage test mode and process are by pressure
Testing machine process control as needed, compressive deformation data can be handled by pressure testing machine or individual computer acquisition, test
Temperature is by external Heating Furnace Control, pressure medium and pressure by external pressure control system from the filler port above 1 side wall of autoclave body
19 interfaces are injected and are controlled.
Further, pressurizing device includes nut 2 and pressurizing piston bar 4, and the nut 2 passes through screw thread and autoclave body 1
Top connection is equipped with hard straight hole in the centre of nut 2, is equipped with pressurizing piston bar 4, the outside of the pressurizing piston bar 4 in hole
Wall is equipped with the positive stop lug boss 25 matched with nut 2, is equipped with pressure ring 3, the lower section of the pressure ring 3 in the lower section of positive stop lug boss 25
Upper seal assembly 9 is equipped between pressurizing piston bar 4 and autoclave body 1, the lower end of pressurizing piston bar 4 is extend into the cavity of autoclave body 1,
The top of pressurizing piston bar 4 has been connected through a screw thread piston rod pressure head 5, and the top of the piston rod pressure head 5 is equipped with upper ball ring
6, it is equipped with LVDT sensor 27 in the centre of piston rod pressure head 5, the LVDT sensor 27 is connected with measuring rod 1 is extended
It connects, extends measuring rod 1 and be set in the internal cavities of pressurizing piston bar 4, the bottom end head for extending measuring rod 1 is lived with pressurization
The inner wall of stopper rod 4 contacts, and is 3~4mm with lateral extent outside the lower end of pressurizing piston bar 4.
Further, support device includes that ring flange 17, lower kettle plug 13 and pedestal 18, ring flange 17 are connected through a screw thread
In the bottom end of autoclave body 1, pedestal 18 is connect by bolt 23 with ring flange 17, is equipped in the top of pedestal 18 and is protruded into 1 inner cavity of autoclave body
Lower kettle plug 13, between the lower kettle plug 13 and autoclave body 1 be equipped with lower seal assembly 15, the centre of pedestal 18 be equipped with LVDT sensing
Device 3 16, the LVDT sensor 3 16 are connected with measuring rod 2 22 is extended, and extend measuring rod 2 22 and are set to lower kettle plug 13
Internal cavities in, the distal end chip for extending measuring rod 2 22 is contacted with the inner wall of lower kettle plug 13, and the upper end with lower kettle plug 13
Outer lateral extent is 3~4mm.
Further, the bottom face of the bottom face plane contact of the top end face of sample 11 and pressurizing piston bar 4, sample 11 is logical
Cross the top facial plane and sphere-contact of lower peripheral surface pad 12 Yu lower kettle plug 13.11 lower end surface of 5 upper surface of piston rod pressure head and sample
Ball ring 6 and lower peripheral surface pad 12 is respectively set, two groups of ball rings use in pairs, minimize sample 11 and pressurization link
It is axially inclined that test accuracy is influenced.
Further, the gap between the lateral wall of pressurizing piston bar 4 and autoclave body 1 be 1~2mm, pressurizing piston bar 4 it is interior
Side wall and the gap extended between measuring rod 1 are 0.5 mm.
Further, the gap between the lateral wall and autoclave body 1 of lower kettle plug 13 is 0.5~1.5mm, the inside of lower kettle plug 13
Wall and the gap extended between measuring rod 2 22 are 0.5 mm.
Further, the side of piston rod pressure head 5 is fixedly connected with LVDT sensor 1, the measurement of LVDT sensor 1
Rod end is contacted with the top surface of nut 2.Pressurizing piston bar 4 is measured equipped with LVDT sensor 1 between piston rod pressure head 5 and nut 2
Pressurization displacement；It is respectively provided with inside pressurizing piston bar 4 and lower kettle plug 13 with the LVDT sensor 27 and band for extending measuring rod 1
The LVDT sensor 3 16 for extending measuring rod 2 22, for measuring device pressurization link deformation, LVDT sensor 1, LVDT are passed
Sensor 27 and LVDT sensor 3 16 form sample axial deformation closed-loop measuring system.
Further, the upper outside movable sleeve of autoclave body 1 is connected to coolant jacket 10, in the lower outside movable sleeve of autoclave body 1
It is connected to lower coolant jacket 14, for the upper coolant jacket 10 between nut 2 and filler port 19, the lower coolant jacket 14 is located at ring flange
Between 17 and heating furnace 20.
A kind of application method for axial compression test device under high temperature and pressure, the method step are as follows: one, test dress
It sets assembling: first placing autoclave body 1 and 2 connecting pin of nut vertically downward, then successively put lower seal assembly 15, lower kettle plug 13
Enter the interior intracavitary of autoclave body 1, load coolant jacket 14, ring flange 17 after the completion, next will extend measuring rod 2 22 and be packed into lower kettle plug
In 13 inner hole, the sensor sensing coil of LVDT sensor 3 16 is packed into pedestal 18, and lower 13 end of kettle plug is arrived in the back-off of pedestal 18
On face, is finally combined ring flange 17 with pedestal 18 with bolt 23 and linked together, the assembling of finishing device lower part；Lower part installs
Cheng Hou overturns reaction kettle and places so that pedestal 18 is vertical downward, then above 1 inner hole of autoclave body, is sequentially placed into lower peripheral surface pad 12, sample
Product 11, upper seal assembly 9, pressure ring 3, pressurizing piston bar 4, wherein lower peripheral surface pad 12 uses preceding accurate with the spherical of lower kettle plug 13
To grinding and cleaning, reach can adsorbed state, after the completion of internal, next load onto coolant jacket 10, nut 2, piston rod pressure head 5,
Extension rod is first packed into pressurizing piston bar 4 by LVDT sensor 1 and LVDT sensor 27 when installing LVDT sensor 27
Hole, sensor sensing coil are tightened onto 4 end of pressurizing piston bar after being packed into piston rod pressure head 5, finally pacify LVDT sensor 1
It is attached on piston rod pressure head 5, experimental rig is completed；Two, experimental rig is integrally put into pressure testing machine: by experimental rig
Above ball is placed on dress heating furnace 20, connection confining pressure control system, 5 top of piston rod pressure head after entirety is put into pressure testing machine in place
Face pad 6, test preparation stage complete；Three, experimental stage: first by confining pressure control system to being compressed axially examination under high temperature and pressure
Experiment device injects 0.5MPa test(ing) medium and protects sample, prevents from aoxidizing in heating process, then starts 20 pairs of test dresses of heating furnace
Heating is set, heating process is by process control；After heating temperature arrives, temperature is kept, and control pressurer system is to axial under high temperature and pressure
Compression test device injection testing medium can start to carry out the clearing of pressure testing machine initial pressure after injection to setting value
Work, resetting purpose is to deduct the influence of pressure medium and piston rod frictional force in cavity, obtains being pressurized to true on sample
Pressure, clearing start, and manually control pressure testing machine pressurizing piston and slowly decline, and contact axial compression test under high temperature and pressure and fill
It postpones, pressure testing machine plus-pressure gradually increases, and there are 2mm when due to filling sample between 4 lower end surface of pressurizing piston bar and sample 11
Left and right gap, pressurizing piston bar 4 has one section of idle stroke when pushing, living when pressure testing machine plus-pressure reaches a certain level
Stopper rod is begun to decline, and one 8 numerical value of LVDT sensor starts significant changes at this time, and since idle stroke exists, press pressure changes not
Greatly, power is the sum of active force and piston rod frictional force of medium generation at this time, when pressurizing piston bar 4 is controlled in pressure testing machine
Under continue to push, when press pressure continues growing 500 ~ 1000N, pressurizing piston bar 4 and sample 11 are completely attached to and are preloaded, this
When to pressure testing machine, LVDT sensing data reset, can be according to the control journey that test requirements document is previously set after clearing
Sequence carries out applied voltage test by pressure testing machine, in test LVDT sensor data transmission to pressure testing machine or collecting computer,
Sample deformations amount is obtained by calculation relational expression, after obtaining sample forces and deformation relationship, so that it may judgement calculating yield strength,
The mechanics parameters such as creep rupture strength, breaking strength, elasticity modulus.
Further, test(ing) medium can be the weak erosives liquid such as the indifferent gas such as argon gas and water, can be according to experiment
Need select, in the present embodiment, be selected as argon gas.
Further, calculation relational expression are as follows: Δ L=Δ L1- Δ L2- Δ L3
Wherein: Δ L- sample deformations, Δ L1- LVDT sensor 1 are displaced, and Δ L2- LVDT sensor 27 is displaced, Δ
L3- LVDT sensor 3 16 is displaced.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art of the present technique.Finally, it is stated that the above reality
It applies example to be only used to illustrate the technical scheme of the present invention and not to limit it, although having carried out specifically the present invention referring to preferred embodiment
It is bright, those skilled in the art should understand that, can with modification or equivalent replacement of the technical solution of the present invention are made, and
The objective and range for not departing from technical solution of the present invention, are intended to be within the scope of the claims of the invention.
Claims (8)
1. a kind of device for axial compression test under high temperature and pressure, it is characterised in that: it includes autoclave body (1) and heating furnace
(20), the autoclave body (1) is cylindrical, hollow shape tube structure, and the middle part of autoclave body (1) is equipped with bringing-up section bulge loop (24), described to add
It is socketed on the outside of hot arc bulge loop (24) around to formula heating furnace (20) are cutd open, pressurizing device is equipped in the upper end of autoclave body (1), in kettle
The lower end of body (1) is equipped with support device, sample (11) is equipped in the middle part of the cavity of autoclave body (1), in the upper of bringing-up section bulge loop (24)
The side wall of square autoclave body (1) is equipped with the filler port (19) being connected with autoclave body (1) inner cavity.
2. a kind of device for axial compression test under high temperature and pressure according to claim 1, it is characterised in that: described
Pressurizing device includes nut (2) and pressurizing piston bar (4), and the nut (2) is connect by screw thread with the top of autoclave body (1),
It is equipped with hard straight hole in the centre of nut (2), pressurizing piston bar (4) are equipped in hole, on the lateral wall of the pressurizing piston bar (4)
Equipped with the positive stop lug boss (25) matched with nut (2), pressure ring (3) are equipped in the lower section of positive stop lug boss (25), the pressure ring (3)
Lower section pressurizing piston bar (4) and autoclave body (1) between be equipped with upper seal assembly (9), the lower end of pressurizing piston bar (4) extend into kettle
In the cavity of body (1), it has been connected through a screw thread piston rod pressure head (5) on the top of pressurizing piston bar (4), the piston rod pressure head
(5) top is equipped with upper ball ring (6), is equipped with LVDT sensor two (7) in the centre of piston rod pressure head (5), the LVDT is passed
Sensor two (7) is connected with measuring rod one (21) are extended, and extends the inside sky that measuring rod one (21) are set to pressurizing piston bar (4)
It is intracavitary, extend measuring rod one (21) bottom end head contacted with the inner wall of pressurizing piston bar (4), and under pressurizing piston bar (4)
Lateral extent is 3~4mm outside end.
3. a kind of device for axial compression test under high temperature and pressure according to claim 1, it is characterised in that: described
Support device includes ring flange (17), lower kettle plug (13) and pedestal (18), and ring flange (17) is threadedly attached in autoclave body (1)
Bottom end, pedestal (18) connect by bolt (23) with ring flange (17), interior equipped with autoclave body (1) is protruded into the top of pedestal (18)
The lower kettle plug (13) of chamber is equipped with lower seal assembly (15) between the lower kettle plug (13) and autoclave body (1), in the centre of pedestal (18)
Equipped with LVDT sensor three (16), the LVDT sensor three (16) is connected with measuring rod two (22) are extended, and extends measuring rod
Two (22) are set in the internal cavities of lower kettle plug (13), extend the distal end chip of measuring rod two (22) and the inner wall of lower kettle plug (13)
Contact, and be 3~4mm with lateral extent outside the upper end of lower kettle plug (13).
4. a kind of device for axial compression test under high temperature and pressure according to claim 1, it is characterised in that: described
The bottom face of the top end face of sample (11) and the bottom face plane contact of pressurizing piston bar (4), sample (11) passes through lower peripheral surface pad
(12) with the top facial plane and sphere-contact of lower kettle plug (13).
5. a kind of device for axial compression test under high temperature and pressure according to claim 2, it is characterised in that: described
Gap between the lateral wall and autoclave body (1) of pressurizing piston bar (4) is 1~2mm, the inner sidewall of pressurizing piston bar (4) and extension
Gap between measuring rod one (21) is 0.5 mm.
6. a kind of device for axial compression test under high temperature and pressure according to claim 3, it is characterised in that: described
Gap between the lateral wall and autoclave body (1) of lower kettle plug (13) is 0.5~1.5mm, and the inner sidewall of lower kettle plug (13) and extension are surveyed
Gap between gauge rod two (22) is 0.5 mm.
7. a kind of device for axial compression test under high temperature and pressure according to claim 2, it is characterised in that: described
The side of piston rod pressure head (5) is fixedly connected with LVDT sensor one (8), the measurement rod end and nut of LVDT sensor one (8)
(2) top surface contact.
8. a kind of device for axial compression test under high temperature and pressure according to claim 1, it is characterised in that: described
The upper outside movable sleeve of autoclave body (1) is connected to coolant jacket (10), is connected to lower coolant jacket in the lower outside movable sleeve of autoclave body (1)
(14), the upper coolant jacket (10) is located between nut (2) and filler port (19), and the lower coolant jacket (14) is located at ring flange
(17) between heating furnace (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820592000.9U CN208254975U (en) | 2018-04-24 | 2018-04-24 | A kind of device for axial compression test under high temperature and pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820592000.9U CN208254975U (en) | 2018-04-24 | 2018-04-24 | A kind of device for axial compression test under high temperature and pressure |
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| CN208254975U true CN208254975U (en) | 2018-12-18 |
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| CN201820592000.9U Expired - Fee Related CN208254975U (en) | 2018-04-24 | 2018-04-24 | A kind of device for axial compression test under high temperature and pressure |
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| CN (1) | CN208254975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562498A (en) * | 2018-04-24 | 2018-09-21 | 中国科学院地球化学研究所 | A kind of device and its application method for axial compression test under high temperature and pressure |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562498A (en) * | 2018-04-24 | 2018-09-21 | 中国科学院地球化学研究所 | A kind of device and its application method for axial compression test under high temperature and pressure |
| CN108562498B (en) * | 2018-04-24 | 2024-02-27 | 中国科学院地球化学研究所 | Device for high-temperature high-pressure axial compression test and application method thereof |
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