CN213456742U - High-temperature mechanical simulation and in-situ observation device - Google Patents
High-temperature mechanical simulation and in-situ observation device Download PDFInfo
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- CN213456742U CN213456742U CN202022309082.1U CN202022309082U CN213456742U CN 213456742 U CN213456742 U CN 213456742U CN 202022309082 U CN202022309082 U CN 202022309082U CN 213456742 U CN213456742 U CN 213456742U
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Abstract
The utility model discloses a high temperature mechanics simulation and normal position viewing device, including high temperature environment case (13), transversely run through at the middle part of high temperature environment case (13) has sample (12), the both ends of sample (12) all are located the outside of high temperature environment case (13), the both ends of sample (12) are passed through anchor clamps (10) and are linked to each other with the load unit. The utility model provides a pair of high temperature mechanics simulation and normal position viewing device can realize the normal position observation of high temperature service action, is different from traditional high temperature testing machine, and this device uses left and right handed lead screw, and relative motion all takes place at loading in-process sample both ends, and the sample center remains motionless, consequently can realize specific area's normal position observation. The device of the utility model is simple in structure, low cost, easy and simple to handle, multiple functional, can obtain scientific, real experimental result.
Description
Technical Field
The utility model relates to a high temperature mechanics simulation and normal position viewing device is applicable to the high temperature mechanics action of simulation and normal position observation material, belongs to material test technical field.
Background
The change of the mechanical behavior of the material in a high-temperature environment is a problem generally concerned by material researchers, and simulating and in-situ observing the high-temperature mechanical behavior of the material is the key for evaluating the high-temperature service condition of the material. At present, a high-temperature testing machine is mainly used for evaluating the high-temperature mechanical behavior of the material, as described in the published patent (CN 107607411A). The high temperature tester usually adopts resistance wire heating, and the anchor clamps need to be placed in the environmental chamber together with the sample in the experimental process. The following defects exist in the using process: (1) the heating speed is slow (2) in the loading process, one end of the sample is fixed, and the other end of the sample is gradually loaded to stretch the sample, so that the observation field moves, and the change process of a certain specific area is difficult to observe in situ; (3) the clamp and the sample are placed in a high-temperature environment box simultaneously, and the clamp is made of high-temperature resistant materials. Therefore, it is highly desirable to design a high-temperature mechanical simulation and in-situ observation device, which can simulate the high-temperature mechanical behavior of materials under different load forms and realize in-situ observation of specific areas so as to scientifically evaluate and observe the high-temperature service process of the materials.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, the utility model provides a high temperature mechanics simulation and normal position viewing device, the device can truly simulate and the high temperature mechanics action of normal position observation material, and temperature is controllable among the experimentation, appearance change can be observed, the loading load is controllable, is applicable to the high temperature action of being on active service of simulation and observation material.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a high-temperature mechanical simulation and in-situ observation device comprises a high-temperature environment box, wherein a sample transversely penetrates through the middle of the high-temperature environment box, two ends of the sample are positioned on the outer side of the high-temperature environment box, and two ends of the sample are connected with a load unit through a clamp;
the high-temperature environment box comprises a main body test box, wherein sealing units are arranged on the left side and the right side of the main body test box respectively, each sealing unit comprises a cavity type shell consisting of an inner wall and an outer wall, the interior of each sealing unit is hollow, through holes for penetrating through the sample are formed in the left side and the right side of each sealing unit, annular Y-shaped high-temperature resistant rubber sealing rings are arranged on the left side and the right side of the interior of each sealing unit, a plurality of magnetic balls are filled between the two Y-shaped high-temperature resistant rubber sealing rings, a liquid storage unit is arranged above each sealing unit, magnetorheological fluid is filled in each liquid storage unit, each liquid storage unit is communicated with the interior of each sealing unit, the upper end and the lower end of each shell are respectively communicated with a cooling;
a plurality of gilding reflection type infrared heating quartz tubes are arranged in the main body test box, each gilding reflection type infrared heating quartz tube comprises a gilding reflection arc surface and an infrared heating quartz tube, arc center angles of all the gilding reflection arc surfaces are opposite to the sample and are uniformly distributed, a gilding layer is coated on one surface, opposite to the sample, of each gilding reflection arc surface, and each infrared heating quartz tube is located at the circle center of each gilding reflection arc surface; a temperature sensor is arranged close to the sample, and an observation window which is right opposite to the central position of the sample is arranged on the outer wall of the main body test box.
The diameter of the magnetic ball is micron-sized, and the surface of the magnetic ball is coated with a piezoelectric ceramic coating.
The load unit comprises a stress sensor connected with the clamp on one side, the outer side of the stress sensor and the outer side of the clamp on the other side are respectively connected onto a nut seat, two left-handed and right-handed screw rods respectively penetrate through the upper end and the lower end of the nut seat through bearings, one ends of the two left-handed and right-handed screw rods are movably connected onto a screw rod supporting seat, the other ends of the two left-handed and right-handed screw rods are respectively connected with a turbine, the turbine is vertically meshed with a gear on a worm, the worm is fixed on the bearing supporting seat, a first gear is sleeved on the worm, and the first gear is meshed with a second gear on a motor.
And the left-right rotating screw rods are connected with the transmission seat through bearings.
The sealing unit is connected with the main body test box through a metal rubber ring and a flange.
The infrared heating quartz tube, the stress sensor, the temperature sensor and the motor are all connected with a controller; the infrared heating quartz tube, the stress sensor, the temperature sensor, the motor and the controller are all powered by a power supply.
The inner diameter of the end of the Y-shaped high-temperature-resistant rubber sealing ring is 0-0.3 mm smaller than the outer diameter of the sample, and the gap between the magnetic ball and the sample is 0-0.3 mm.
The Y-shaped high-temperature resistant rubber sealing ring is made of a double-fluorine rubber ring.
The metal rubber ring is made of spiral metal wires through cold stamping, the metal wires are 0Cr18Ni9Ti or 1Cr18Ni9Ti, and the diameter of the metal wires is 0.05 mm-0.15 mm.
The material of the observation window comprises quartz; and a plug which is convenient for liquid adding and sealing is arranged at the top end of the liquid storage unit.
The working temperature range of the sample in the high-temperature environment box is 0-700 ℃, the high-temperature environment box is made of stainless steel, and the lining is made of a fireproof heat-insulating material.
The utility model discloses following beneficial effect has:
1) the utility model discloses rate of heating is fast, economical and applicable. Different from traditional resistance wire heating, the utility model discloses a quartzy infrared focusing of half gilding reflection-type infrared heating can realize sample local area's rapid heating, therefore anchor clamps need not to place in the environment case, does not have special requirement to the material of anchor clamps, and economy is suitable for.
2) The utility model discloses a dynamic seal technique can realize sealing under the dynamic load effect. The device realizes sealing under the action of dynamic load through the mechanical seal of the rubber ring and the dynamic seal coupling action of the magnetic fluid, and the surface-modified nano magnesium oxide or nano aluminum oxide is added into the Y-shaped high-temperature-resistant rubber sealing ring, so that the high-temperature-resistant performance of the rubber sealing ring can be effectively improved on the basis of not reducing the elasticity of the rubber ring. Meanwhile, on the one hand, the Y-shaped high-temperature-resistant rubber sealing ring can prevent hot air from leaking and also can prevent magnetorheological fluid from leaking into the internal main body test box and the external environment under the action of dynamic load, and on the other hand, the magnetic ball can limit the movement of the rubber ring and can continuously provide a magnetic field to realize magnetic fluid sealing so as to further inhibit the leakage of the hot air. Meanwhile, different from other magnetic fluid sealing technologies, each magnetic ball can be a sealing unit, the pressure on the magnetic fluid can be reduced step by step, the effect similar to labyrinth sealing is achieved, and therefore the sealing effect is excellent.
3) The utility model discloses can realize the normal position observation of high temperature action of taking a service. Different from the traditional high-temperature testing machine, the device uses the left-handed and right-handed screw rod, the two ends of the sample move relatively in the loading process, and the center of the sample remains still, so that the in-situ observation of a specific area can be realized.
4) The utility model discloses has good magnetic stability. General magnetic material is the decline phenomenon of magnetism easily appearing under high temperature, the utility model discloses an aspect utilizes the cooling water course to reduce magnetism ball temperature, and on the other hand when the sample receives load effect, the piezoceramics on magnetism ball surface produces the electric current under the effect of force, and sustainable magnetization for magnetism ball makes magnetism ball keep the stability of magnetic property.
The device of the utility model is simple in structure, low cost, easy and simple to handle, multiple functional, can obtain scientific, real experimental result.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the high temperature environment box of the present invention;
fig. 3 is a schematic structural diagram of the middle main body test box of the present invention.
In the figure: 1-motor, 2-gear II, 3-worm, 4-bearing support seat, 5-turbine, 6-transmission seat, 7-left-right-handed screw rod, 8-nut seat, 9-stress sensor, 10-clamp, 11-screw rod support seat, 12-sample, 13-high-temperature environment box, 14-main body test box, 15-sealing unit, 16-liquid storage unit, 17-plug, 18-metal rubber ring, 19-flange, 20-semi-gold-plated reflection type infrared heating quartz tube, 21-temperature sensor, 22-observation window, 23-magnetic ball, 24-Y type high-temperature resistant rubber sealing ring, 25-cooling water gap and 26-cooling water channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting of the invention.
Example 1
As shown in fig. 1, a high-temperature mechanical simulation and in-situ observation device comprises a motor 1, a second gear 2, a worm 3, a bearing support seat 4, a turbine 5, a transmission seat 6, a left-right screw rod 7, a nut seat 8, a stress sensor 9, a clamp 10, a screw rod support seat 11, a sample 12 and a high-temperature environment box 13; wherein the worm 3 is connected with the bearing support seat 4 through a bearing, and the worm 3 is meshed with the worm wheel 5 to form a speed reducing mechanism; the left-right rotating screw rod 7 is connected with the transmission seat 6 and the screw rod supporting seat 11 through bearings; the left clamp 10 is connected with the left nut seat 8 through a stress sensor 9; the motor 1 is used for controlling the stress and the frequency; the high temperature environment chamber 13 is used to simulate a high temperature environment.
As shown in fig. 2, the high-temperature environment box 13 includes a main body test box 14, two left and right sealing units 15, a liquid storage unit 16, a plug 17, a metal rubber ring 18 and a flange 19; the sealing unit 15 is connected with the main body test box 14 through a metal rubber ring 18 and a flange 19, and a hole is formed in the upper portion of the sealing unit 15 and used for adding magnetorheological fluid, and the magnetorheological fluid is located inside the liquid storage unit 16; the main body test chamber 14 comprises four half-gold-plated reflection-type infrared heating quartz tubes 20, a temperature sensor 21 and an observation window 22 made of quartz, wherein the observation window 22 is used for in-situ observation; the sealing unit 15 comprises a magnetic ball 23, a Y-shaped high-temperature resistant rubber sealing ring 24, a cooling water port 25 and a cooling water channel 26.
As shown in FIG. 3, the main test chamber 14 includes four symmetrically disposed half-gold-plated reflective infrared-heated quartz tubes 20, and the concave surface of the half-gold-plated reflective layer is focused on the sample 12.
Specifically, the connection relationship between the components is as follows:
a high-temperature mechanical simulation and in-situ observation device comprises a high-temperature environment box 13, wherein a sample 12 transversely penetrates through the middle of the high-temperature environment box 13, two ends of the sample 12 are positioned on the outer side of the high-temperature environment box 13, and two ends of the sample 12 are connected with a load unit through a clamp 10;
high temperature environment case 13 includes main part proof box 14, the left and right sides of main part proof box 14 all is provided with sealed unit 15, sealed unit 15 includes the cavity formula shell of compriseing interior outer wall, the inside cavity of sealed unit 15, the left and right sides of sealed unit 15 all is provided with and is used for running through the through-hole of sample 12, the inside left and right sides of sealed unit 15 all is provided with the resistant high temperature rubber seal of annular Y type 24, and the concrete structure of the resistant high temperature rubber seal of Y type 24 is: the rubber sealing ring comprises an annular rubber sealing ring main body, wherein concave circular arcs are symmetrically arranged on the upper surface and the lower surface of the rubber sealing ring main body, a V-shaped groove is formed in one side face of the rubber sealing ring main body, the opening depth of the V-shaped groove and the center of the circular arc are on the same vertical line, the angle of the V-shaped groove is 20-50 degrees, and the central angle of the circular arc is 60-90 degrees; a plurality of magnetic balls 23 are filled between two Y-shaped high-temperature resistant rubber sealing rings 24, a liquid storage unit 16 is arranged above the sealing unit 15, magnetorheological fluid is filled in the liquid storage unit 16, a plug 17 convenient for liquid adding and sealing is arranged at the top end of the liquid storage unit 16, the liquid storage unit 16 is communicated with the inside of the sealing unit 15 through a pipeline, the upper end and the lower end of the shell are respectively communicated with a cooling water port 25, and the shell is a cooling water channel 26.
A plurality of gilding reflection type infrared heating quartz tubes 20 are arranged in the main body test box 14, each gilding reflection type infrared heating quartz tube 20 comprises a gilding reflection arc surface and an infrared heating quartz tube, arc center angles of all the gilding reflection arc surfaces are opposite to the sample 12 and are uniformly distributed, a gilding layer is coated on one surface, opposite to the sample 12, of each gilding reflection arc surface, and each infrared heating quartz tube is located at the circle center of each gilding reflection arc surface; a temperature sensor 21 is arranged near the sample 12, and an observation window 22 facing the center of the sample 12 is arranged on the outer wall of the main body test box 14.
The diameter of the magnetic ball 23 is micron-sized, for example 100-300 mu m, and the surface of the magnetic ball 23 is coated with a piezoelectric ceramic coating.
The load unit comprises a stress sensor 9 connected with the clamp 10 on one side, the outer side of the stress sensor 9 and the outer side of the clamp 10 on the other side are respectively connected onto a nut seat 8, two left-handed and right-handed screw rods 7 respectively penetrate through the upper end and the lower end of the nut seat 8 through bearings, and the left side and the right side of each left-handed and right-handed screw rod 7 are respectively provided with threads with opposite spiral directions; two equal swing joint of one end of a left-handed screw 7 (through the bearing connection) is on lead screw supporting seat 11, two the other end of a left-handed screw 7 and a right-handed screw 7 all link to each other with turbine 5, the gear on turbine 5 and the worm 3 is the rectilinear meshing, and the worm 3 passes through the bearing to be fixed on bearing supporting seat 4, the cover has gear one on the worm 3, gear one meshes with gear two 2 on the motor 1 mutually.
Two be connected with transmission seat 6 through the bearing between the levogyration lead screw 7, the setting of transmission seat 6 further makes two levogyration lead screws 7 take place synchronous revolution.
The sealing unit 15 is connected to the main test chamber 14 via a metal rubber ring 18 and a flange 19.
The infrared heating quartz tube, the stress sensor 9, the temperature sensor 21 and the motor 1 are all connected with a controller; the infrared heating quartz tube, the stress sensor 9, the temperature sensor 21, the motor 1 and the controller are all powered by a power supply.
The inner diameter of the end of the Y-shaped high-temperature-resistant rubber sealing ring 24 is smaller than the outer diameter of the sample 12 by 0-0.3 mm, and the gap between the magnetic ball 23 and the sample 12 is 0.01 mm.
The Y-shaped high-temperature resistant rubber sealing ring 24 is a double-fluorine rubber ring.
The metal rubber ring 18 is made of spiral metal wires through cold stamping, the components of the metal wires are 0Cr18Ni9Ti or 1Cr18Ni9Ti, and the diameters of the metal wires are 0.05 mm-0.15 mm.
In this embodiment, the test piece 12 is made of magnesium alloy, the length of the test piece is 120mm, the diameter of the test piece is 4mm, the main test box 14 is made of stainless steel, the lining is made of refractory bricks, the metal rubber ring 18 is made of 0Cr18Ni9Ti stainless steel wire, the diameter of the metal rubber ring is 0.05mm, the diameter of the magnetic ball 23 is 300 microns, the surface of the magnetic ball 23 is coated with a barium titanate piezoelectric coating, the inner diameter of the selected Y-shaped high temperature resistant rubber sealing ring 24 is 4.02mm, the heating temperature of the high temperature environment box 13 is 10 ℃, the motor 1 is controlled to rotate to test the mechanical property of the magnesium alloy at the current temperature, and the service process can be observed through the glass window 22. This embodiment is before using, and through the magnetic field of plus magnetic conduction earlier, after magnetic conduction, magnetic ball 23 rule arranges on the inner wall of sealed unit 15 to make things convenient for sample 12 to run through high temperature environment case 13 and make things convenient for sealed unit 15 to carry out the centre gripping to sample 12.
Example 2
This example differs from example 1 only in that: the material of the selected test piece 12 is a low-carbon steel bar with the length of 100mm and the diameter of 3mm, the main test box 14 is made of stainless steel, the lining is made of refractory asbestos, the material of the metal rubber ring 18 is 1Cr18Ni9Ti stainless steel wire with the diameter of 0.15mm, the diameter of the magnetic ball 23 is 200 mu m, the surface of the magnetic ball 23 is coated with a strontium barium meta-niobate piezoelectric coating, and the inner diameter of the selected Y-shaped high-temperature resistant rubber sealing ring is 3.3 mm. The gap between the magnetic ball 23 and the sample is 0.3mm, the heating temperature of the high-temperature environment box 13 is 600 ℃, the high-temperature mechanical property of the low-carbon steel bar under the high-temperature action can be tested by controlling the rotation of the motor 1, and the service process can be observed through the glass window 22 by using a metallographic microscope.
Example 3
This example differs from example 1 only in that: the material of the selected test piece 12 is an aluminum alloy bar, the length of the selected test piece is 80mm, the diameter of the selected test piece is 4mm, the main test box 14 is made of stainless steel, the lining is made of refractory ceramic, the metal rubber ring 18 is a 0Cr18Ni9Ti stainless steel wire, the diameters of the metal rubber ring are respectively 0.08mm and 0.12mm, the diameter of the magnetic ball 23 is 100 mu m, the surface of the magnetic ball 23 is coated with a barium titanate piezoelectric coating, and the inner diameter of the selected Y-shaped high-temperature resistant rubber sealing ring is 4.1 mm. The gap between the magnetic ball 23 and the sample is 0.1mm, the heating temperature of the high-temperature environment box 13 is 300 ℃, the high-temperature mechanical property of the aluminum alloy under the high-temperature action can be tested by controlling the rotation of the motor 1, and the service process can be observed through the glass window 22 by using an electron microscope.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a high temperature mechanics simulation and normal position viewing device which characterized in that: the device comprises a high-temperature environment box (13), wherein a sample (12) transversely penetrates through the middle of the high-temperature environment box (13), two ends of the sample (12) are positioned on the outer side of the high-temperature environment box (13), and two ends of the sample (12) are connected with a load unit through a clamp (10);
the high-temperature environment box (13) comprises a main body test box (14), sealing units (15) are arranged on the left side and the right side of the main body test box (14), each sealing unit (15) comprises a cavity type shell consisting of an inner wall and an outer wall, the inside of each sealing unit (15) is hollow, through holes for penetrating through the sample (12) are formed in the left side and the right side of each sealing unit (15), annular Y-shaped high-temperature resistant rubber sealing rings (24) are arranged on the left side and the right side of the inside of each sealing unit (15), a plurality of magnetic balls (23) are filled between the two Y-shaped high-temperature resistant rubber sealing rings (24), a liquid storage unit (16) is arranged above each sealing unit (15), magnetorheological fluid is filled in each liquid storage unit (16), the liquid storage units (16) are communicated with the inside of the sealing units (15), and the upper end and the lower end of each shell are respectively communicated with a cooling, the shell is a cooling water channel (26);
a plurality of gilding reflection type infrared heating quartz tubes (20) are arranged in the main body test box (14), each gilding reflection type infrared heating quartz tube (20) comprises a gilding reflection arc surface and an infrared heating quartz tube, arc center angles of all the gilding reflection arc surfaces are just opposite to the sample (12) and are uniformly distributed, a gilding layer is coated on one surface of each gilding reflection arc surface, which is just opposite to the sample (12), and each infrared heating quartz tube is positioned at the circle center of each gilding reflection arc surface; a temperature sensor (21) is arranged close to the sample (12), and an observation window (22) which is over against the center of the sample (12) is arranged on the outer wall of the main body test box (14).
2. The high-temperature mechanical simulation and in-situ observation device of claim 1, wherein: the diameter of the magnetic ball (23) is micron-sized, and the surface of the magnetic ball (23) is coated with a piezoelectric ceramic coating.
3. The high-temperature mechanical simulation and in-situ observation device of claim 1, wherein: the load unit comprises a stress sensor (9) connected with the clamp (10) on one side, the outer side of the stress sensor (9) and the outer side of the clamp (10) on the other side are respectively connected onto a nut seat (8), two left and right screw rods (7) respectively penetrate through the upper end and the lower end of the nut seat (8) through bearings, one ends of the left and right screw rods (7) are movably connected onto a screw rod supporting seat (11), the other ends of the left and right screw rods (7) are connected with a turbine (5), the turbine (5) is vertically meshed with a gear on the worm (3), the worm (3) is fixed onto a bearing supporting seat (4), a first gear is sleeved on the worm (3), and the first gear is meshed with a second gear (2) on the motor (1).
4. The high-temperature mechanical simulation and in-situ observation device of claim 3, wherein: the left and right screw rods (7) are connected with the transmission seat (6) through bearings.
5. The high-temperature mechanical simulation and in-situ observation device of claim 1, wherein: the sealing unit (15) is connected with the main body test box (14) through a metal rubber ring (18) and a flange (19).
6. The high-temperature mechanical simulation and in-situ observation device of claim 3, wherein: the infrared heating quartz tube, the stress sensor (9), the temperature sensor (21) and the motor (1) are all connected with a controller; the infrared heating quartz tube, the stress sensor (9), the temperature sensor (21), the motor (1) and the controller are all powered by a power supply.
7. The high-temperature mechanical simulation and in-situ observation device of claim 1, wherein: the inner diameter of the end of the Y-shaped high-temperature-resistant rubber sealing ring (24) is smaller than the outer diameter of the sample (12) by 0-0.3 mm, and the gap between the magnetic ball (23) and the sample (12) is 0-0.3 mm.
8. The high-temperature mechanical simulation and in-situ observation device of claim 5, wherein: the metal rubber ring (18) is made of spiral metal wires through cold stamping, the metal wires are 0Cr18Ni9Ti or 1Cr18Ni9Ti, and the diameter of the metal wires is 0.05 mm-0.15 mm.
9. The high-temperature mechanical simulation and in-situ observation device of claim 1, wherein: the material of the observation window (22) comprises quartz; and a plug (17) convenient for liquid adding and sealing is arranged at the top end of the liquid storage unit (16).
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