CN111238957B - Al-based binary intermetallic compound thermodynamic property experimental device - Google Patents
Al-based binary intermetallic compound thermodynamic property experimental device Download PDFInfo
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- CN111238957B CN111238957B CN202010268160.XA CN202010268160A CN111238957B CN 111238957 B CN111238957 B CN 111238957B CN 202010268160 A CN202010268160 A CN 202010268160A CN 111238957 B CN111238957 B CN 111238957B
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- 229910000765 intermetallic Inorganic materials 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 96
- 238000004321 preservation Methods 0.000 claims abstract description 26
- 238000002474 experimental method Methods 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 27
- 238000005452 bending Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 12
- 238000012546 transfer Methods 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
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- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- 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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/064—Special adaptations of indicating or recording means with hydraulic indicating or recording means
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- 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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- G—PHYSICS
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- 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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- 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
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- G01N2203/0016—Tensile or compressive
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- 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
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- 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
- G01N2203/0075—Strain-stress relations or elastic constants
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2203/0611—Hydraulic or pneumatic indicating, recording or sensing means
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- 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
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- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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Abstract
The invention relates to an Al-based binary intermetallic compound thermodynamic property experimental device, which effectively solves the problems that the existing experimental device has overlarge volume, needs a plurality of devices, is complex to operate, is inconvenient to use and cannot change corresponding experimental environments according to different requirements; the device comprises a heat preservation shell, an inner shell and a test block, wherein a low-temperature plate is connected in the inner shell in a front-back sliding manner, a high-temperature plate is arranged above the low-temperature plate, the lower ends of the left side and the right side of the high-temperature plate are respectively connected with a lifting support plate in a contact manner, the lifting support plates are respectively connected with lifting racks which are connected to the left outer side wall and the right outer side wall of the inner shell in a sliding manner, the two lifting racks are respectively meshed with driving gears which are rotatably connected to the left side wall and the right side wall of the inner shell, the left driving gear is fixedly connected with a rocking handle wheel which is rotatably connected to the side wall; and the structure is simple and stable, and the practicability is strong.
Description
Technical Field
The invention relates to the technical field of thermodynamic property experiments, in particular to an Al-based binary intermetallic compound thermodynamic property experimental device.
Background
The intermetallic compound is a compound formed by metal and metal or metal and nonmetal (such as H, B, N, S, P, C, Si, etc.), and the intermetallic compound has a different crystal structure and atomic structure from the original metal, can form a new ordered superlattice structure, has many distinctive properties and is different from the metal or alloy widely used at present. The rapid development has been achieved in recent decades, and the application field is gradually expanded, which has prompted the urgent need of research on the thermodynamic properties of the intermetallic compounds.
The research on the thermodynamic properties of the intermetallic compound mainly comprises the research on the temperature, the volume, the thermal conductivity, the compressive capacity and the tensile resistance of the intermetallic compound, the thermodynamic properties of the intermetallic compound are tested through an experimental device, the application field and the application range of the intermetallic compound are further determined, the superiority of the intermetallic compound is fully exerted, and the research on the thermodynamic properties of the Al-based binary intermetallic compound is also the same.
At present, the following problems exist in the thermodynamic performance experimental device of the intermetallic compound:
1. the device adopts automatic performance test, and has overlarge volume, occupies large space, and has high cost and low market acceptance rate for places with low requirements on teaching and precision;
2. when the experiment is carried out through a simple mechanical experiment device, a plurality of experimental devices are needed to carry out measurement experiments on different performance parameters, the operation is complicated, and the space is occupied;
3. different experimental means and experimental conditions cannot be set according to different experimental requirements, and the applicability is poor.
Therefore, the invention provides an experimental device for thermodynamic properties of an Al-based binary intermetallic compound to solve the problems.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides the Al-based binary intermetallic compound thermodynamic property experimental device, which effectively solves the problems that the existing experimental device has overlarge volume, higher cost and low market utilization rate, and the experiment is carried out by simple thermodynamic experimental equipment, multiple pieces of equipment are needed, the operation is complicated, the use is inconvenient, the experimental environment is single, and the corresponding experimental environment change can not be carried out according to different requirements.
The test block comprises a heat preservation shell, an inner shell and a test block, and is characterized in that a low-temperature plate is connected in the inner shell in a front-back sliding manner, a high-temperature plate which is connected with the inner shell in a vertical sliding manner is arranged above the low-temperature plate, the lower ends of the left side and the right side of the high-temperature plate are respectively connected with a lifting support plate in a contact manner, the lifting support plates are respectively fixedly connected with lifting racks which are connected with the left outer side wall and the right outer side wall of the inner shell in a sliding manner, the two lifting racks are respectively meshed with driving gears which are rotatably connected with the left side wall and the right side wall of the inner shell, the two driving gears are coaxially and fixedly connected, and the;
the left side and the right side in the inner shell are both fixedly connected with clamping devices;
the lower end surface of the high-temperature plate and the upper end surface of the low-temperature plate are both fixedly connected with temperature sensors, and the temperature sensors are connected with a control module fixedly connected to the heat-insulating shell;
push-pull rods are connected to the left side and the right side of the inner shell in a front-back sliding mode, a hot plate clamping block is fixedly connected to the front end of each push-pull rod, the hot plate clamping block clamps the high-temperature plate, and the two push-pull rods are fixedly connected to connecting rods fixedly connected to the two sides of the low-temperature plate;
the left side of the push-pull rod on the left side is fixedly connected with a pull rod sliding sleeve, the pull rod sliding sleeve is in threaded fit with a pull rod telescopic lead screw which is rotatably connected with the heat preservation shell, and the pull rod telescopic lead screw is coaxially and fixedly connected with a pull rod rocking handle which is rotatably connected with the front side of the heat preservation shell;
the front side of the low-temperature plate is fixedly connected with a bending table, a hydraulic rod fixedly connected with the inner shell is arranged above the bending table, and the hydraulic rod is connected with a hydraulic pump fixedly connected to the heat-insulating shell.
Preferably, the bending platform is provided with a liquid storage bin, the upper end of the liquid storage bin is fixedly connected with a sealing cover, the sealing cover is made of elastic materials, the liquid storage bin and the liquid storage bin are fixedly connected with each other and fixedly communicated with a liquid level change display meter on the heat preservation shell, the upper end of the liquid level change display meter is in an open shape, and scales are marked on the liquid level change display meter.
Preferably, the front side of the bending table is fixedly connected with a conveying table, a plurality of carrier rollers are rotatably connected in the conveying table, the carrier roller at the rightmost side is coaxially and fixedly connected with a driven friction wheel rotatably connected to the front side of the conveying table, the driven friction wheel is in contact fit with a driving friction wheel rotatably connected to the inner shell, and the driving friction wheel is connected with a driving motor fixedly connected to the inner shell;
the right side of the inner shell is fixedly connected with an experiment bin arranged in the heat preservation shell, the experiment bin is rotationally connected with a rotating wheel which has the same height as the carrier roller, and the left side of the experiment bin is fixedly connected with a clamping device;
the experimental bin is internally and fixedly connected with a heating coil, the heating coil is connected with the control module, the rear end of the experimental bin is fixedly connected with a point light source, the front end of the experimental bin is fixedly connected with a projection plate, and the projection plate is made of a light-transmitting material.
Preferably, the coaxial fixedly connected with drive pulley in drive friction pulley front end, drive pulley with rotate and connect and be in experiment storehouse in the driven pulley pass through the belt and link to each other, the coaxial fixedly connected with one-level friction pulley in driven pulley rear end, one-level friction pulley contact cooperation have with the coaxial fixedly connected's of rotation wheel second grade friction pulley.
Preferably, a concave lens is arranged between the heating coil and the projection plate at the front side of the experiment chamber, and the height of the concave lens is higher than that of the heating coil.
Preferably, experiment storehouse right-hand member fixedly connected with tensile workstation, tensile workstation on sliding connection has a sliding support frame, sliding support frame upper end around both sides all rotate and be connected with the dwang, the dwang left end all rotate and be connected with the clamp plate, the dwang on all seted up the slip chute, the slip chute in sliding connection have the tensile pole of slip, the tensile pole right side fixedly connected with of slip tensile pole hydraulic stem, tensile hydraulic stem and fixed connection be in tensile workstation on tensile hydraulic pump link to each other.
Preferably, the heating coil comprises a plurality of small heating coils, and the small heating coils are started to control the local heating of the test block.
Preferably, a temperature sensor and a heating resistance wire are fixedly connected in the inner shell, and both the temperature sensor and the heating resistance wire are connected with the control module.
The invention improves the existing thermodynamic performance experimental device, and solves the problems of overlarge volume and large occupied space by arranging the inner shell, the experimental bin, the sliding low-temperature plate, the bending plate and the conveying table; the heat transfer coefficient is measured by arranging the high-temperature plate, the low-temperature plate and the temperature sensor; the problem of testing different thermodynamic performance parameters is solved by additionally arranging the low-temperature plate, the bending table, the conveying table, the lifting rack, the driving gear and the push-pull rod; the problem that the deformation of the material is small and the material is difficult to observe in an experiment is solved by additionally arranging the liquid level change display, the point light source and the projection plate; the intermetallic compound test block is fixed by arranging the rotating rod, the pressing plate, the sliding stretching rod and the stretching hydraulic pressure, and the problem that the intermetallic compound test block is separated from the test block in the stretching process is solved by stretching; and the structure is simple and stable, and the universality is extremely high.
Drawings
Fig. 1 is a first perspective view of the present invention.
Fig. 2 is a perspective view of the second embodiment of the present invention.
Fig. 3 is a partial schematic view of the sliding rack lifting structure of the present invention.
Fig. 4 is a schematic sectional view of the internal structure of the present invention.
Fig. 5 is a perspective view of the inner housing of the present invention.
FIG. 6 is a partial perspective view of the belt transmission structure of the friction wheel of the present invention.
Fig. 7 is a perspective view of the front-back sliding control structure of the high-temperature board and the low-temperature board according to the present invention.
Fig. 8 is a perspective view of the device for pressing and stretching a test block according to the present invention.
Fig. 9 is a partial perspective view of the internal structure of the experimental bin of the invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 9. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The invention relates to an Al-based binary intermetallic compound thermodynamic property experimental device, which comprises a heat preservation shell 1, an inner shell 2 and a test block 3, wherein the heat preservation shell 1 is hollow, the heat preservation is carried out inside the heat preservation shell 1, the heat loss is reduced, the environment inside the inner shell 2 is relatively stable, the inner shell 2 is fixedly connected inside the heat preservation shell 1, a fixed support foundation is provided for a subsequent structure, the front end of the inner shell 2 is fixedly connected with a switch door which is made of a heat preservation material, the test block 3 is arranged inside the inner shell 2 and used for carrying out a performance experiment test, the Al-based binary intermetallic compound thermodynamic property experimental device is characterized in that a low-temperature plate 4 is connected inside the inner shell 2 in a front-back sliding mode, a high-temperature plate 5 which is connected with the inner shell 2 in a vertical sliding mode is arranged above the low-temperature plate 4, the test block 3 is arranged between the high-temperature plate 5 and the low-temperature plate 4, the lower end surface is contacted with the low-temperature plate 4, the high-temperature plate 5 and the low-temperature plate 4 are both fixedly connected with heaters, the heaters are both connected with an external power supply, the high-temperature plate 5 and the low-temperature plate 4 can be respectively heated by the heaters, meanwhile, the low-temperature plate 4 is also fixedly connected with a heat dissipation device, the heat dissipation device cools and dissipates heat for the low-temperature plate 4, the heaters and the heat dissipation device are both in the prior art, no further description is given here, the lower ends of the left side and the right side of the high-temperature plate 5 are both contacted and connected with lifting support plates 6, the lifting support plates 6 are both fixedly connected with lifting racks 7 which are slidably connected with the left side wall and the right side wall of the inner shell 2, the lifting racks 7 are positioned in the middle position of the inner shell 2, so that the high-temperature plate 5 and the lifting support plates, the two lifting racks 7 are meshed with the driving gears 8 which are rotatably connected to the left side wall and the right side wall of the inner shell 2, the two driving gears 8 are coaxially and fixedly connected, the driving gear 8 on the left side is fixedly connected with the rocking handle wheel 9 which is rotatably connected to the side wall of the heat preservation shell 1, the rocking handle wheel 9 is rotated to drive the driving gears 8 to synchronously rotate, the driving gears 8 rotate to drive the lifting racks 7 to lift, the lifting racks 7 lift to drive the lifting support plate 6 to lift, and the lifting support plate 6 lifts to drive the high-temperature plate 5 to synchronously lift, so that the high-temperature plate 5 and the test block 3 are attached and separated;
the inner shell 2 is fixedly connected with clamping devices on the left side and the right side, the embodiment provides a clamping device, specifically, the inner shell 2 is rotatably connected with double-headed screws 10 on the left side and the right side, the double-headed screws 10 are respectively in threaded fit with two fastening plates 11 in sliding connection with the inner shell 2, the two fastening plates 11 are positioned on two sides of the test block 3, the two fastening plates 11 are driven to move oppositely under the action of the double-headed screws 10, the test block 3 is clamped and fixed, the double-headed screws 10 are convenient to rotate, one end of each double-headed screw 10 is coaxially and fixedly connected with a rocking handle for the screw, the rocking handle for the screw is rotatably connected with the heat preservation shell 1, and the double-headed screws 10 are driven to rotate synchronously by rotating the rocking handle for the screw;
the temperature sensors are fixedly connected to the lower end face of the high-temperature plate 5 and the upper end face of the low-temperature plate 4, the temperature sensors are connected with a control module 12 fixedly connected to the heat preservation shell 1, the temperatures of the high-temperature plate 5 and the low-temperature plate 4 are measured through the temperature sensors, the temperatures are displayed through the control module 12, a single chip microcomputer is integrated in the control module 12, a heat transfer coefficient calculation program is programmed in the single chip microcomputer, and the heat transfer coefficient of the test block 3 is experimentally measured through the control module 12 and the temperature sensors;
push-pull rods 13 are respectively connected to the left side and the right side of the inner shell 2 in a front-back sliding manner, sliding tracks matched with the push-pull rods 13 are formed in the inner shell 2, the push-pull rods 13 slide back and forth along the push-pull tracks, a hot plate clamping block 14 is fixedly connected to the front end of the push-pull rods 13, the hot plate clamping block 14 clamps the high-temperature plate 5, the hot plate clamping block 14 is driven to synchronously slide in the front-back sliding process of the push-pull rods 13, meanwhile, the hot plate clamping block 14 slides to drive the high-temperature plate 5 to slide back and forth, so that the high-temperature plate 5 is moved out of the middle position, the two push-pull rods 13 are fixedly connected with connecting rods 15 fixedly connected to the two sides of the low-temperature plate 4, and the low-temperature plate 4 is driven to synchronously slide and separate from the test block 3 in the sliding process;
a pull rod sliding sleeve 16 is fixedly connected to the left side of the push-pull rod 13 on the left side, a pull rod telescopic lead screw 17 which is rotatably connected with the heat preservation shell 1 is in threaded fit with the pull rod sliding sleeve 16, the pull rod telescopic lead screw 17 is coaxially and fixedly connected with a pull rod rocking handle 18 which is rotatably connected to the front side of the heat preservation shell 1, the pull rod rocking handle 18 rotates to drive the pull rod telescopic lead screw 17 to synchronously rotate, the pull rod telescopic lead screw 17 rotates to drive the pull rod sliding sleeve 16 to slide back and forth, and the pull rod sliding sleeve 16 slides back and forth to drive the push-pull rod 13 to slide back and forth;
the front side of the low-temperature plate 4 is fixedly connected with a bending platform 19, the bending platform 19 is hollow and does not influence the deformation of the test block 3, a hydraulic rod 20 fixedly connected with the inner shell 2 is arranged above the bending platform 19, the hydraulic rod 20 is connected with a hydraulic pump 21 fixedly connected with the heat-insulating shell 1, and the hydraulic rod 20 is started through the hydraulic pump 21 so as to press the test block 3;
in this embodiment, in a specific implementation, the cryopanel 4 is located in the middle of the inner shell 2 in an initial state, the high temperature plate 5 is located right above the cryopanel 4 and farthest away from the cryopanel, the switch door is opened first, the test block 3 is placed on the cryostage, then the rocking handles for the lead screws on the left and right sides of the thermal insulation shell 1 are rotated respectively, the rocking handles for the lead screws rotate to drive the double-headed lead screws 10 to rotate, the double-headed lead screws 10 rotate to drive the fastening plates 11 to slide oppositely, the fastening plates 11 slide oppositely to complete clamping and fixing of the test block 3, the heater and the heat dissipation device are started through the control module 12, so that the temperature difference between the cryopanel 5 and the cryopanel 4 reaches a required value, and after a period of time, the control module 12 calculates a heat transfer coefficient according to a temperature value measured by the temperature sensor, after the calculation is finished, the rocking handle wheel 9 is rotated to drive the driving gear 8 to synchronously rotate, the driving gear 8 rotates to drive the lifting rack 7 to ascend, the lifting rack 7 ascends to drive the lifting support plate 6 to synchronously ascend, the lifting support plate 6 ascends to drive the high-temperature plate 5 to synchronously ascend, when the lifting support plate 6 drives the high-temperature plate 5 to ascend to the highest position, the pull rod rocking handle 18 is simultaneously rotated, the pull rod rocking handle 18 rotates to drive the pull rod sliding lead screw to rotate, the pull rod sliding lead screw rotates to drive the pull rod sliding sleeve 16 to slide, so as to drive the push-pull rod 13 to slide, the push-pull rod 13 slides to drive the high-temperature plate 5 to slide through the hot plate clamping block 14, and when the high-temperature plate 5 slides to the rear end, the hydraulic pump 21 is started to press the test block 3, and observing the deformation amount of the test block 3, recording the pressure value of the hydraulic rod 20, completing the whole test process, finally taking out the test block 3, and resetting the high-temperature plate 5 and the low-temperature plate 4.
In the second embodiment, on the basis of the first embodiment, it is inconvenient to observe the deformation of the test block 3 by opening the switch door, and the small deformation amount is difficult to be distinguished by naked eyes, and this embodiment provides a deformation amount observing and amplifying device, specifically, the bending table 19 is provided with a liquid storage bin 22, the upper end of the liquid storage bin 22 is fixedly connected with a sealing cover 23, the sealing cover 23 is made of elastic material, the embodiment provides a specific sealing plate, the sealing plate is made of elastic rubber material, the liquid storage bin 22 is fixedly communicated with a liquid level change display meter 24 fixedly connected to the heat preservation shell 1, the upper end of the liquid level change display meter 24 is open, the liquid level change display meter 24 is marked with scales, when the test block 3 arranged on the bending table 19 deforms, the test block 3 deforms to press the sealing cover 23, the sealing cover 23 deforms correspondingly to press the liquid in the liquid storage bin 22, the liquid moves upwards along the liquid level change display meter 24, and the deformation amount of the test block 3 is displayed in an amplifying mode through the liquid level change display meter.
In the third embodiment, on the basis of the second embodiment, when the expansion coefficient of the test block 3 is measured, the variation range of expansion caused by heat and contraction caused by cold is small while the test block is heated by the high temperature plate 5, which is not practical, and it is not easy to observe, the present embodiment provides an apparatus for measuring the expansion coefficient of the test block, specifically, a conveying table 25 is fixedly connected to the front side of the bending table 19, a plurality of carrier rollers 26 are rotatably connected to the conveying table 25, the carrier roller 26 on the rightmost side is coaxially and fixedly connected to a driven friction wheel 27 rotatably connected to the front side of the conveying table 25, the driven friction wheel 27 is in contact fit with a driving friction wheel 28 rotatably connected to the inner shell 2, the driving friction wheel 28 is connected to a driving motor 29 fixedly connected to the inner shell 2, and the driving friction wheel 28 is driven to rotate by the rotation of the driving motor 29, the driving friction wheel 28 rotates to drive the driven friction wheel 27 to rotate, the driven friction wheel 27 rotates to drive the carrier roller 26 to rotate, and the carrier roller 26 rotates to finish the conveying of the test block 3 to a subsequent structure;
an experiment bin 31 arranged in the heat preservation shell 1 is fixedly connected to the right side of the inner shell 2, a rotating wheel 30 which has the same height as the carrier roller 26 is rotatably connected to the experiment bin 31, test block 3 channels are formed in the inner shell 2 and the experiment bin 31, so that the test block 3 conveyed by the carrier roller 26 can smoothly enter the experiment bin 31, the test block 3 conveyed by the carrier roller 26 falls on the rotating wheel 30, the test block 3 is supported by the rotating wheel 30, and the clamping device is fixedly connected to the left side of the experiment bin 31;
Fourth embodiment, on the basis of the third embodiment, when the test block 3 is conveyed by the rotation of the supporting roller 26, the conveying distance is limited, the test block 3 cannot be completely conveyed into the experiment chamber 31, and the stability of the conveying process is poor, and this embodiment provides a new conveying manner for the test block 3, specifically, the front end of the driving friction wheel 28 is coaxially and fixedly connected with a driving pulley 35, the driving pulley 35 is connected with a driven pulley 36 which is rotatably connected in the experiment chamber 31 through a belt, the rear end of the driven pulley 36 is coaxially and fixedly connected with a primary friction wheel 37, the primary friction wheel 37 is in contact fit with a secondary friction wheel 38 which is coaxially and fixedly connected with the rotating wheel 30, and the driving friction wheel 28 rotates to drive the driving pulley 35 to rotate synchronously, and then through belt drive, drive driven pulley 36 rotate, driven pulley 36 rotate drive one-level friction pulley 37 rotate, one-level friction pulley 37 rotate drive second grade friction pulley 38 rotate, and then drive running wheel 30 rotate, realize the linkage of bearing roller 26 and running wheel 30.
In a fifth embodiment, on the basis of the third embodiment, when the deformation amount of the test block 3 is projected and magnified through the point light source 33 and the projection plate 34, the space of the experiment chamber 31 is limited, which may limit the magnification amount and cause a phenomenon of insignificant magnification, this embodiment provides a projection magnification method, specifically, a concave lens 39 is disposed in front of the experiment chamber 31 and located between the heating coil 32 and the projection plate 34, the height of the concave lens 39 is higher than that of the heating coil 32, and light refracted by the point light source 33 and the test block 3 is refracted and magnified through the concave lens 39, so that the projection projected on the projection plate 34 is further magnified, and the observation of the small deformation amount is facilitated.
Sixth embodiment, on the basis of the third embodiment, in the process of performing a thermodynamic performance experiment on a test block 3, an experiment needs to be performed on the tensile resistance of the test block 3, this embodiment provides a tensile experiment testing apparatus, specifically, a tensile worktable 40 is fixedly connected to the right end of the experiment chamber 31, the tensile worktable 40 provides a fixed support foundation for a subsequent structure, a sliding support frame 41 is slidably connected to the tensile worktable 40 in a left-right sliding manner, a manner of slidably connecting in a left-right direction is provided in this embodiment, specifically, a T-shaped sliding rail is provided on the tensile worktable 40, a T-shaped slider matched with the T-shaped sliding rail is fixedly connected to the lower end of the sliding support frame 41, a rotating rod 42 is rotatably connected to both the front and rear sides of the upper end of the sliding support frame 41, and a pressing plate 43 is rotatably connected to the left end of the rotating rod 42, the test block testing device is characterized in that the rotating rods 42 are all provided with sliding chutes 44, the sliding chutes 44 are connected with sliding stretching rods 45 in a sliding mode, the right sides of the sliding stretching rods 45 are fixedly connected with stretching hydraulic rods 46, when the sliding stretching rods 45 are stretched, the rotating rods 42 are driven to rotate around the sliding support frames 41 under the action of the sliding stretching rods 45 and the sliding chutes 44, the rotating rods 42 are driven to slide oppositely in the rotating process of the rotating rods 42 to press the test block 3, then the sliding stretching rods 45 are continuously stretched through the stretching hydraulic rods 46, the sliding stretching rods 45 slide to stretch the test block 3 due to the extrusion effect on the test block 3, and the stretching hydraulic rods 46 gradually increase the tensile force on the test block 3 in the process of stretching the test block 3, the tensile resistance of the test block 3 is tested, the tensile hydraulic rod 46 is connected with a tensile hydraulic pump 47 fixedly connected to the tensile worktable 40, the hydraulic pump 21 is connected with the control module 12, and the control and recording of the tensile value of the tensile hydraulic rod 46 can be realized through the control module 12.
Seventh embodiment, on the basis of the sixth embodiment, in the process of stretching the test block 3 at a high temperature, the test block cannot be locally heated, and the areas with different temperatures and temperatures are observed in the same tensile force state, and in this embodiment, a tensile force test mode under different conditions of different temperatures and temperatures is provided, specifically, the heating coil 32 includes a plurality of small heating coils connected in parallel, and when local heating is required, the small heating coils of the starting portion are used to control the local heating of the test block 3, and at the same time, the test block 3 is stretched, and the tensile force resistance of the test block 3 under different temperature conditions is observed.
An eighth embodiment is that, on the basis of the first embodiment, when the heat transfer coefficient of the test block 3 is experimentally measured, the test block is greatly influenced by external temperature changes, and a constant temperature state needs to be maintained, and this embodiment provides a device for maintaining a constant temperature, specifically, a temperature sensor and a heating resistance wire are fixedly connected in the inner shell 2, the temperature sensor and the heating resistance wire are both connected with the control module 12, when the temperature is lower than a control temperature, the temperature sensor transmits a signal to the control module 12, and the control module 12 controls the heating resistance wire to heat the inside of the inner shell 2, so as to ensure that the temperature in the inner shell 2 is constantly in a constant state.
When in specific use, the low-temperature board 4 is positioned at the middle position of the inner shell 2 in the initial state, the high-temperature board 5 is positioned right above the low-temperature board 4 and farthest away, the switch door is firstly opened, the test block 3 is placed on the low-temperature table, then the rocking handles for the lead screws on the left side and the right side of the heat preservation shell 1 are respectively rotated, the double-head lead screws 10 are driven to rotate by the rotation of the lead screws, the fastening plates 11 are driven to slide oppositely by the rotation of the double-head lead screws 10, the fastening plates 11 slide oppositely to complete the clamping and fixing of the test block 3, then the handle-shaking wheel 9 is rotated to drive the high-temperature plate 5 to descend through the driving gear 8, the sliding rack and the lifting support plate 6 and to contact with the upper end surface of the test block 3, then, the control module 12 starts the heater and the heat dissipation device to enable the temperature difference between the high-temperature plate 5 and the low-temperature plate 4 to reach a required value, and after a period of time, the control module 12 calculates the heat transfer coefficient according to the temperature value measured by the temperature sensor;
after the calculation is finished, the rocking handle wheel 9 is rotated to drive the driving gear 8 to synchronously rotate, the driving gear 8 rotates to drive the lifting rack 7 to ascend, the lifting rack 7 ascends to drive the lifting support plate 6 to ascend, the lifting support plate 6 ascends to drive the high-temperature plate 5 to synchronously ascend, when the lifting support plate 6 drives the high-temperature plate 5 to rise to the highest position, the pull rod rocking handle 18 is rotated to drive the pull rod sliding screw rod to rotate, the pull rod sliding screw rod rotates to drive the pull rod sliding sleeve 16 to slide, thereby driving the push-pull rod 13 to slide, the push-pull rod 13 slides to drive the high-temperature plate 5 to slide through the hot plate clamping block 14, when the high-temperature plate 5 slides to the position that the bending platform 19 is positioned under the test block 3, the hydraulic pump 21 is started to press the test block 3 and observe the deformation amount of the test block 3, observing the deformation of the test block 3 through a liquid level change display meter 24, and recording the pressure value of the hydraulic rod 20 to finish the test process of the compression resistance;
when further testing is needed, the pull rod rocking handle 18 is rotated, the high-temperature plate 5 is driven to slide through the pull rod sliding lead screw, the pull rod sliding sleeve 16, the push-pull rod 13 and the hot plate clamping block 14, when the high-temperature plate 5 slides to the position under the test block 3, the rocking handle for the lead screw is rotated reversely, the fastening plate 11 is driven to slide backwards through the rotation of the double-headed lead screw 10, the fastening plate 11 slides backwards to complete loosening of the test block 3, then the driving motor 29 is started, the driving motor 29 drives the driving friction wheel 28 and the driven friction wheel 27 to drive the carrier roller 26 to rotate, meanwhile, the driving motor 29 drives the driving belt pulley 35 to synchronously rotate, the driving belt pulley 35 drives the rotating wheel 30 to rotate through the driven belt pulley 36, the secondary friction wheel 38 and the primary friction wheel 37, the test block 3 is conveyed to the experimental bin 31 by the carrier roller 26 and the rotating wheel 30 together, after the test block 3 is conveyed to the experimental bin 31, the, the double-head screw 10 rotates to drive the fastening plates 11 to slide oppositely, and the fastening plates 11 slide oppositely to finish the clamping and fixing of the test block 3;
the heating coil 32 is controlled by the control module 12 to heat the test block 3, and the deformation amount of the test block 3 is observed and recorded through the projection plate 34 after the heating is finished;
when a test block 3 needs to be subjected to a tensile test, the sliding stretching rod 45 is stretched through the stretching hydraulic pump 47, the sliding stretching rod 45 stretches to drive the rotating rod 42 to rotate around the sliding support frame 41, the test block 3 is clamped and stretched at the same time, the test of the stretch resistance of the test block 3 is completed, the stretching hydraulic rod 46 is connected with the stretching hydraulic pump 47 fixedly connected to the stretching workbench 40, the hydraulic pump 21 is connected with the control module 12, and the control and recording of the tension value of the stretching hydraulic rod 46 can be realized through the control module 12;
after the experiment test is finished, the test block 3 is conveyed into the inner shell 2, the switch door is opened, the test block is taken out, and then the low-temperature plate 4 and the high-temperature plate 5 are reset.
The invention improves the existing thermodynamic performance experimental device, and solves the problems of overlarge volume and large occupied space by arranging the inner shell, the experimental bin, the sliding low-temperature plate, the bending plate and the conveying table; the heat transfer coefficient is measured by arranging the high-temperature plate, the low-temperature plate and the temperature sensor; the problem of testing different thermodynamic performance parameters is solved by additionally arranging the low-temperature plate, the bending table, the conveying table, the lifting rack, the driving gear and the push-pull rod; the problem that the deformation of the material is small and the material is difficult to observe in an experiment is solved by additionally arranging the liquid level change display, the point light source and the projection plate; the intermetallic compound test block is fixed by arranging the rotating rod, the pressing plate, the sliding stretching rod and the stretching hydraulic pressure, and the problem that the intermetallic compound test block is separated from the test block in the stretching process is solved by stretching; and the structure is simple and stable, and the universality is extremely high.
Claims (8)
- An Al-based binary intermetallic compound thermodynamic property experimental device comprises a heat preservation shell (1), an inner shell (2) and a test block (3), it is characterized in that a low-temperature plate (4) is connected in the inner shell (2) in a sliding way from front to back, a high-temperature plate (5) which is connected with the inner shell (2) in a vertical sliding way is arranged above the low-temperature plate (4), the lower ends of the left side and the right side of the high-temperature plate (5) are respectively connected with a lifting support plate (6) in a contact way, the lifting support plates (6) are fixedly connected with lifting racks (7) which are connected to the left and right outer side walls of the inner shell (2) in a sliding mode, the two lifting racks (7) are meshed with driving gears (8) which are connected to the left and right side walls of the inner shell (2) in a rotating mode, the two driving gears (8) are fixedly connected in a coaxial mode, and the driving gear (8) on the left side is fixedly connected with a rocking handle wheel (9) which is connected to the side wall of the heat preservation shell (1) in a rotating mode;the left side and the right side in the inner shell (2) are rotatably connected with clamping devices;the lower end face of the high-temperature plate (5) and the upper end face of the low-temperature plate (4) are both fixedly connected with temperature sensors, and the temperature sensors are connected with a control module (12) fixedly connected to the heat-insulating shell (1);push-pull rods (13) are respectively connected to the left side and the right side of the inner shell (2) in a front-back sliding manner, a hot plate clamping block (14) is fixedly connected to the front ends of the push-pull rods (13), the high-temperature plate (5) is clamped by the hot plate clamping block (14), and the two push-pull rods (13) are fixedly connected with connecting rods (15) fixedly connected to the two sides of the low-temperature plate (4);a pull rod sliding sleeve (16) is fixedly connected to the left side of the push-pull rod (13) on the left side, a pull rod telescopic lead screw (17) which is rotatably connected with the heat preservation shell (1) is in threaded fit with the pull rod sliding sleeve (16), and the pull rod telescopic lead screw (17) is coaxially and fixedly connected with a pull rod rocking handle (18) which is rotatably connected to the front side of the heat preservation shell (1);the front side of the low-temperature plate (4) is fixedly connected with a bending platform (19), a hydraulic rod (20) fixedly connected with the inner shell (2) is arranged above the bending platform (19), and the hydraulic rod (20) is connected with a hydraulic pump (21) fixedly connected with the heat-insulating shell (1).
- 2. The Al-based binary intermetallic compound thermodynamic property experimental device according to claim 1, characterized in that a liquid storage bin (22) is opened on the bending table (19), a sealing cover (23) is fixedly connected to the upper end of the liquid storage bin (22), the sealing cover (23) is made of elastic material, the liquid storage bin (22) is fixedly communicated with a liquid level change display meter (24) fixedly connected to the heat preservation shell (1), the upper end of the liquid level change display meter (24) is open, and scales are marked on the liquid level change display meter (24).
- 3. The Al-based binary intermetallic compound thermodynamic property experimental apparatus according to claim 2, characterized in that a conveying table (25) is fixedly connected to the front side of the bending table (19), a plurality of carrier rollers (26) are rotatably connected to the conveying table (25), the rightmost carrier roller (26) is coaxially and fixedly connected to a driven friction wheel (27) rotatably connected to the front side of the conveying table (25), the driven friction wheel (27) is in contact fit with a driving friction wheel (28) rotatably connected to the inner shell (2), and the driving friction wheel (28) is connected to a driving motor (29) fixedly connected to the inner shell (2);an experiment bin (31) arranged in the heat preservation shell (1) is fixedly connected to the right side of the inner shell (2), a rotating wheel (30) with the same height as the carrier roller (26) is rotatably connected to the experiment bin (31), and the clamping device is fixedly connected to the left side of the experiment bin (31);experiment storehouse (31) interior fixedly connected with heating coil (32), heating coil (32) with control module (12) link to each other, experiment storehouse (31) rear end fixedly connected with pointolite (33), experiment storehouse (31) front end fixedly connected with projection board (34), projection board (34) be the printing opacity material.
- 4. The Al-based binary intermetallic compound thermodynamic property experimental apparatus of claim 3, characterized in that, the front end of the driving friction wheel (28) is coaxially and fixedly connected with a driving pulley (35), the driving pulley (35) is connected with a driven pulley (36) rotatably connected in the experimental bin (31) through a belt, the rear end of the driven pulley (36) is coaxially and fixedly connected with a primary friction wheel (37), and the primary friction wheel (37) is in contact fit with a secondary friction wheel (38) coaxially and fixedly connected with the rotating wheel (30).
- 5. The Al-based binary intermetallic compound thermodynamic property experimental apparatus of claim 3, characterized in that, the front side of the experimental chamber (31) is equipped with a concave lens (39) between the heating coil (32) and the projection plate (34), and the height of the concave lens (39) is higher than that of the heating coil (32).
- 6. The Al-based binary intermetallic compound thermodynamic property experimental apparatus of claim 3, it is characterized in that the right end of the experiment bin (31) is fixedly connected with a stretching workbench (40), the stretching workbench (40) is connected with a sliding support frame (41) in a left-right sliding way, the front side and the rear side of the upper end of the sliding support frame (41) are both rotationally connected with rotating rods (42), the left end of the rotating rod (42) is rotatably connected with a pressing plate (43), the rotating rod (42) is provided with a sliding chute (44), a sliding stretching rod (45) is connected in the sliding chute (44) in a sliding way, the right side of the sliding stretching rod (45) is fixedly connected with a stretching hydraulic rod (46), the stretching hydraulic rod (46) is connected with a stretching hydraulic pump (47) fixedly connected to the stretching workbench (40).
- 7. The Al-based binary intermetallic compound thermodynamic property experimental apparatus of claim 6, characterized in that, the heating coil (32) includes several small heating coils, and the local heating of the test block (3) is controlled by starting the small heating coils.
- 8. The Al-based binary intermetallic compound thermodynamic property experimental apparatus as claimed in claim 1, characterized in that a temperature sensor and a heating resistance wire are fixedly connected in the inner shell (2), and both the temperature sensor and the heating resistance wire are connected with the control module (12).
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| CN112858371B (en) * | 2021-02-02 | 2022-06-03 | 桂林理工大学 | Indoor building thermal environment experimental box |
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| CN101196450B (en) * | 2007-12-25 | 2010-06-30 | 北京有色金属研究总院 | Metal wire material stretching mechanical property testing device |
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Effective date of registration: 20221226 Address after: 230000 b-1018, Woye Garden commercial office building, 81 Ganquan Road, Shushan District, Hefei City, Anhui Province Patentee after: HEFEI WISDOM DRAGON MACHINERY DESIGN Co.,Ltd. Address before: No.94 hanghai Middle Road, Erqi District, Zhengzhou City, Henan Province Patentee before: HUANGHE S & T College |