High-temperature mechanical property testing device
By designing a high-temperature mechanical performance test device, including a high-temperature accommodation module, a mechanical test module and a temperature control module, the problem of mechanical performance testing in the existing technology in high-temperature environment is solved, and the high-temperature mechanical performance testing of a variety of structural components is realized. It provides an effective means of exploring the failure mechanism of the structure in high temperature.
Patent Information
- Application Number
- CN202420590583.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The existing high-temperature structural mechanical testing devices are difficult to effectively test the mechanical properties of materials and structures in high-temperature environments, and there is a lack of testing methods suitable for a variety of structural components.
A high-temperature mechanical performance testing device including a high-temperature accommodation module, a mechanical test module, a test piece deformation acquisition module and a temperature control module were designed. The load was applied through the pressure head extension tube, and a temperature control system combining a thermocouple and a heating wire was realized. Deformation parameters acquisition and temperature control of the test piece.
The device can conduct mechanical properties testing of a variety of structural components under high temperature conditions, provide effective testing methods, explore the failure mechanism of structures in high temperatures, and improve the accuracy and reliability of the test.
Smart Images
Figure CN222299396U_ABST
Abstract
Description
Technical Field
[0001] The embodiment of the utility model relates to the technical field of high temperature mechanical property testing, and in particular to a high temperature mechanical property testing device. Background Art
[0002] High-temperature structural mechanics tests are of great significance. They mainly focus on in-depth research on the behavior of materials and structures in high-temperature environments and have a wide impact on the fields of engineering and science. This experiment can evaluate the strength, deformation, fatigue and other properties of materials under high-temperature conditions, thereby improving the reliability and safety of engineering structures. Secondly, high-temperature mechanical tests help optimize structural design and material selection, and improve the performance and durability of structures in high-temperature environments. In addition, it also promotes the research and development of new high-temperature resistant materials and provides more suitable material solutions for high-temperature engineering in various fields. This kind of research not only promotes the improvement of scientific research level, but also provides theoretical support for engineering practice, and injects power into the continuous innovation and progress in technology and engineering. Therefore, it is necessary to design a high-temperature mechanical properties test device to meet the high-temperature structural mechanics test. Utility Model Content
[0003] The embodiment of the utility model provides a high temperature mechanical property testing device to detect the mechanical properties of a to-be-tested piece in a high temperature environment.
[0004] In a first aspect, an embodiment of the utility model provides a high-temperature mechanical properties testing device, including a high-temperature containing module, a mechanical testing module, a specimen deformation collection module, and a temperature control module;
[0005] The high-temperature containing module is hollow inside to accommodate the test piece; the mechanical test module includes a testing machine and a pressure head extension tube, the testing machine is arranged above the high-temperature containing module, the pressure head extension tube is arranged between the testing machine and the high-temperature containing module, and one end of the pressure head extension tube in the extending direction is connected to the testing machine, and the other end extends into the interior of the high-temperature containing module to contact the test piece;
[0006] The testing machine applies a load to the test piece through the pressure head extension tube, so that the test piece is deformed under the force; the temperature control module collects the ambient temperature inside the high-temperature containing module and controls the temperature of the high-temperature containing module; the test piece deformation collection module contacts the test piece to collect the deformation parameters of the test piece.
[0007] Optionally, the high temperature mechanical properties testing device further comprises a test fixture module; the test fixture module is located inside the high temperature containing module and is placed above the test piece; the test fixture module is fixedly connected to the pressure head extension tube at a side away from the test piece;
[0008] The testing machine applies a load to the testing fixture module through the pressure head extension tube, so that the to-be-tested piece placed under the testing fixture module is deformed.
[0009] Optionally, the test fixture module includes a high-temperature four-point bending test fixture for beam components;
[0010] The high-temperature four-point bending test fixture for beam components comprises a distribution beam and two supports; the test piece is placed between the two supports and the distribution beam, and the distribution beam is located on a side surface of the test piece close to the pressure head extension tube;
[0011] The distribution beam is provided with two parallel supporting structures on the side facing the test piece, and contacts the test piece through the two supporting structures; the distribution beam is provided with a first protruding structure on the side facing the pressure head extension tube; the first protruding structure is provided with a groove that fits with the bottom end of the pressure head extension tube on the side facing the pressure head extension tube; the bottom end of the pressure head extension tube is embedded in the groove to be fixedly connected with the distribution beam.
[0012] Optionally, the test fixture module includes a column component high temperature compression test fixture;
[0013] The high-temperature compression test fixture for column components includes a pressure plate; the pressure plate is placed on the surface of one side of the test piece close to the pressure head extension tube, and a second protrusion structure is provided on the side of the pressure plate close to the pressure head extension tube, and a groove that fits with the bottom end of the pressure head extension tube is provided on the side of the second protrusion structure facing the pressure head extension tube; the bottom end of the pressure head extension tube is embedded in the groove to be fixedly connected to the pressure plate.
[0014] Optionally, the mechanical testing module further comprises a piston, and the piston is arranged between the testing machine and the pressure head extension tube; and the extension direction of the piston is the same as the extension direction of the pressure head extension tube;
[0015] Along the extension and retraction direction of the piston, one end of the piston is connected to one end of the pressure head extension tube, and the other end is connected to the testing machine;
[0016] The testing machine controls the expansion and contraction of the piston to drive the pressure head extension tube to move, so as to apply a load to the test piece to cause the test piece to deform.
[0017] Optionally, the high temperature containing module is a high temperature furnace; the high temperature furnace comprises a furnace body and a furnace cover located on the top of the furnace body; the test piece is located inside the furnace body; and a through hole is provided on the furnace cover for passing the pressure head extension tube.
[0018] Optionally, the temperature control module includes a thermocouple, a heating wire, and a temperature control system connected to the thermocouple and the heating wire;
[0019] The thermocouple is disposed inside the high temperature accommodation module to sense the temperature inside the high temperature accommodation module;
[0020] The heating wire is arranged inside the high-temperature accommodation module, and the temperature control system receives a temperature signal from the thermocouple and controls the heating wire to operate, so as to control the internal temperature of the high-temperature accommodation module.
[0021] Optionally, a heat-insulating layer is further provided in the high-temperature containing module; the heat-insulating layer is located between the heating wire and the inner wall of the high-temperature containing module.
[0022] Optionally, a first clamp is arranged around the outer tube wall of the pressure head extension tube; a first pull ring is respectively arranged on both sides of the first clamp in a first direction; the first direction is perpendicular to the extension direction of the pressure head extension tube and the plane is parallel to the main facade of the high temperature loading module;
[0023] The furnace cover is provided with four lifting ears on one side of the surface facing the piston; the four lifting ears are arranged in groups of two on both sides of the furnace cover surface in the first direction, and a group of the lifting ears and one of the first pull rings are arranged on the same side;
[0024] One of the first pull rings is connected to a group of the lifting ears through a first steel wire rope, so that the first clamp is connected to four of the lifting ears through two of the first steel wire ropes. When the pressure head extension tube drives the first clamp to move in a direction away from the furnace cover, the lifting ears are pulled by the first steel wire rope to open the furnace cover.
[0025] Optionally, a second clamp is disposed around the outer tube wall of the pressure head extension tube; the second clamp is located on a side of the first clamp close to the furnace cover;
[0026] The second hoop is provided with a second pull ring on both sides of the first direction; the projections of the two second pull rings on the furnace cover overlap with the projections of the two first pull rings on the furnace cover;
[0027] One of the second pull rings is connected to a group of the lifting ears through a second steel wire rope, so that the second clamp is connected to four of the lifting ears through two of the second steel wire ropes; wherein the length of the second steel wire rope is greater than or equal to the length of the first steel wire rope.
[0028] Optionally, the specimen deformation acquisition module includes a wire-drawing displacement sensor, a high-temperature resistant wire and an expansion screw;
[0029] The expansion screw is pre-buried on the test piece, one end of the high temperature resistant wire is connected to the wire-drawing displacement sensor, and the other end enters the high temperature accommodation module through the through hole reserved at the top of the high temperature accommodation module and is connected to the expansion screw;
[0030] The wire-pull type displacement sensor detects the displacement change of the expansion screw through the high temperature resistant wire to obtain the deformation parameters of the test piece.
[0031] The embodiment of the utility model provides a high-temperature mechanical performance testing device, including a high-temperature containing module, a mechanical test module, a specimen deformation collection module and a temperature control module; the high-temperature containing module is hollow inside to accommodate the test piece; the mechanical test module includes a testing machine and a pressure head extension tube, the testing machine is arranged above the high-temperature containing module, the pressure head extension tube is arranged between the testing machine and the high-temperature containing module, and one end of the pressure head extension tube in the extension direction is connected to the testing machine, and the other end extends into the high-temperature containing module and contacts with the test piece; the testing machine applies a load to the test piece through the pressure head extension tube, so that the test piece is deformed by force; the temperature control module collects the ambient temperature in the high-temperature containing module and controls the temperature of the high-temperature containing module; the specimen deformation collection module contacts with the test piece to collect the deformation parameters of the test piece. The technical solution of the utility model can complete structural loading tests of various structural components in and after high temperature, cooperate with the high-temperature containing module and the load loading device to realize high-temperature structural mechanical performance testing; and provide an effective testing means for exploring the failure mechanism of the structure at high temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a structural schematic diagram of a high temperature mechanical properties testing device provided by an embodiment of the utility model;
[0033] Figure 2 This is a schematic diagram of a high temperature compression test tooling structure for a column member provided by an embodiment of the utility model;
[0034] Figure 3 It is a schematic diagram of the contact between a column component high temperature compression test fixture and a column workpiece provided by an embodiment of the utility model;
[0035] Figure 4 It is a stress-strain curve diagram of a column component at 600°C provided by an embodiment of the utility model;
[0036] Figure 5 This is a schematic diagram of the connection between a first clamp and a furnace cover provided by an embodiment of the utility model;
[0037] Figure 6 It is a schematic diagram of the connection between a second clamp and a furnace cover provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0039] It should be mentioned before discussing the exemplary embodiments in more detail that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the various operations (or steps) as sequential processes, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the various operations can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to methods, functions, procedures, subroutines, subprograms, etc. In addition, the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.
[0040] The term "including" and its variations used in the present invention are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment".
[0041] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish the corresponding contents, and are not used to limit the order or interdependence.
[0042] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".
[0043] Figure 1 This is a schematic diagram of a high temperature mechanical properties testing device provided by the present utility model. Figure 1The device includes a high-temperature containing module 10, a mechanical testing module 20, a specimen deformation collection module 30 and a temperature control module 40; the high-temperature containing module 10 is hollow inside to accommodate a to-be-tested piece 50; the mechanical testing module 20 includes a testing machine 21 and a pressure head extension tube 22, the testing machine 21 is arranged above the high-temperature containing module 10, the pressure head extension tube 22 is arranged between the testing machine 21 and the high-temperature containing module 10, and one end of the pressure head extension tube 22 in the extension direction is connected to the testing machine 21, and the other end extends into the interior of the high-temperature containing module 10 and contacts with the to-be-tested piece 50; the testing machine 21 applies a load to the to-be-tested piece 50 through the pressure head extension tube 22, so that the to-be-tested piece 50 is deformed by force; the temperature control module 40 collects the ambient temperature in the high-temperature containing module 10 and controls the temperature of the high-temperature containing module 10; the specimen deformation collection module 30 contacts with the to-be-tested piece 50 to collect the deformation parameters of the to-be-tested piece 50.
[0044] Specifically, refer to Figure 1 When testing the deformation parameters of the test piece 50 at high temperature, it is placed inside the high-temperature containing module 10, and then the high-temperature containing module 10 is heated by the temperature control module 40, and the ambient temperature inside the high-temperature containing module 10 is collected in real time, until the internal ambient temperature is stabilized at the required experimental temperature, the test machine 21 is controlled to drive the pressure head extension tube 22 to move toward the high-temperature containing module 10, so that the pressure head extension tube 22 applies a load to the test piece 50, and the test piece 50 is deformed by the force, and the test piece deformation collection module 30 contacts the test piece 50 to collect the deformation parameters of the test piece 50, so that the deformation parameters of the test piece 50 at a specific temperature can be obtained.
[0045] The embodiment of the utility model provides a high-temperature mechanical performance testing device, including a high-temperature containing module, a mechanical test module, a specimen deformation collection module and a temperature control module; the high-temperature containing module is hollow inside to accommodate the test piece; the mechanical test module includes a testing machine and a pressure head extension tube, the testing machine is arranged above the high-temperature containing module, the pressure head extension tube is arranged between the testing machine and the high-temperature containing module, and one end of the pressure head extension tube in the extension direction is connected to the testing machine, and the other end extends into the high-temperature containing module and contacts with the test piece; the testing machine applies a load to the test piece through the pressure head extension tube, so that the test piece is deformed by force; the temperature control module collects the ambient temperature in the high-temperature containing module and controls the temperature of the high-temperature containing module; the specimen deformation collection module contacts with the test piece to collect the deformation parameters of the test piece. The technical solution of the utility model can complete structural loading tests of various structural components in and after high temperature, cooperate with the high-temperature containing module and the load loading device to realize high-temperature structural mechanical performance testing; and provide an effective testing means for exploring the failure mechanism of the structure at high temperature.
[0046] Optionally, continue to refer to Figure 1The testing device also includes a testing fixture module 60; the testing fixture module 60 is located inside the high-temperature containing module 10 and is placed above the test piece 50; the side of the testing fixture module 60 away from the test piece 50 is fixedly connected to the pressure head extension tube 22; the testing machine applies a load to the testing fixture module 60 through the pressure head extension tube 22, so that the test piece 50 placed under the testing fixture module 60 is deformed.
[0047] Exemplarily, the test fixture module 60 includes a high-temperature four-point bending test fixture 61 for beam components; the high-temperature four-point bending test fixture 61 for beam components includes a distribution beam 611 and two supports 612; the test piece 50 is placed between the two supports 612 and the distribution beam 611, and the distribution beam 611 is located on the side surface of the test piece 50 close to the pressure head extension tube 22; a first protrusion structure is provided on the side of the distribution beam 611 facing the pressure head extension tube 22; a groove that fits with the bottom end of the pressure head extension tube is provided on the side of the first protrusion structure facing the pressure head extension tube; the bottom end of the pressure head extension tube 22 is embedded in the groove to be fixedly connected with the distribution beam 611.
[0048] Specifically, when the test piece 50 is a beam member, refer to Figure 1 The high-temperature four-point bending test fixture 61 of the beam component includes a distribution beam 611 and two supports 612; the test piece 50 is placed between the two supports 612 and the distribution beam 611, and the distribution beam 611 is located on the side surface of the test piece 50 close to the pressure head extension tube 22. At this time, after the internal temperature of the high-temperature containing module 10 rises to the required temperature, a load is applied to the high-temperature four-point bending test fixture 61 of the beam component through the pressure head extension tube 22 to apply a load to the test piece 50; two parallel support structures are arranged under the distribution beam to contact the test piece 50, and the two points of the test piece 50 in contact with the distribution beam 611 and the two points in contact with the two supports 612 are subjected to force, so that bending occurs at these four points, and the deformation parameters of the test piece 50 are collected by the deformation collection module 30.
[0049] Exemplarily, the test fixture module 60 includes a column component high temperature compression test fixture 62; Figure 2 This is a schematic diagram of a high temperature compression test tooling structure for a column member provided by the embodiment of the utility model, with reference to Figure 2 The column component high temperature compression test fixture 62 includes a pressure plate 621; the pressure plate 621 is placed on the side surface of the test piece close to the pressure head extension tube 22, and a second protrusion structure 622 is provided on the side of the pressure plate close to the pressure head extension tube, and a groove 623 that fits with the bottom end of the pressure head extension tube 22 is provided on the side of the second protrusion structure 622 facing the pressure head extension tube 22; the bottom end of the pressure head extension tube 22 is embedded in the groove 623 to be fixedly connected with the pressure plate 621.
[0050] Specifically, Figure 3This is a schematic diagram of the contact between a column component high temperature compression test fixture and a column workpiece provided by the embodiment of the utility model, with reference to Figure 3 , when the test piece 50 is a column workpiece, the test fixture module 60 is a column component high temperature compression test fixture 62; the column component high temperature compression test fixture 62 is placed above one end of the column workpiece in the extension direction, and the column component high temperature compression test fixture 62 is fixed to the pressure head extension tube 22 on the side away from the column workpiece, and the pressure head extension tube 22 applies a load to the pressure plate 621 so that the test piece 50 is deformed by force. In an optional embodiment of the utility model, the column component high temperature compression test fixture 62 is made of S310 refractory stainless steel and is connected to the pressure head extension tube 22 by bolts. A certain movable space is reserved at the connection part between the pressure plate 621 and the pressure head extension tube 22 to ensure that the pressure head extension tube 22 can be universally rotated to improve the force environment of the test piece.
[0051] Optionally, continue to refer to Figure 1 The mechanical testing module 20 also includes a piston 23, which is arranged between the testing machine 21 and the pressure head extension tube 22; and the extension direction of the piston 23 is the same as the extension direction of the pressure head extension tube 22; along the extension direction of the piston 23, one end of the piston 23 is connected to one end of the pressure head extension tube 22, and the other end is connected to the testing machine 21; the testing machine 21 controls the extension and contraction of the piston 23 to drive the pressure head extension tube 22 to move, so as to apply a load to the test piece 50 to cause the test piece 50 to deform.
[0052] Specifically, refer to Figure 1 In order to control the pressure head extension tube 22 to move toward the test piece 50 to apply a load thereto, a piston 23 is provided. The testing machine controls the extension and retraction of the piston 23 to drive the pressure head extension tube 22 connected to the piston 23 to move, so that the pressure head extension tube 22 applies a load to the test piece 50.
[0053] In an optional embodiment of the utility model, the high temperature containing module 10 is a high temperature furnace; the high temperature furnace includes a furnace body 11 and a furnace cover 12 located on the top of the furnace body 11; the test piece 50 is located inside the furnace body 12; the furnace cover 11 is provided with a through hole through the pressure head extension tube 22. One side of the main facade of the furnace body 12 is provided with an observation window and two thermocouple channels in the furnace. The glass used in the observation window is high temperature resistant borosilicate glass, which is not easily broken by high temperature; the thermocouple channel is composed of a ceramic tube with a diameter of 25mm and a refractory glass fiber material. There are two detachable windows on the two side facades of the furnace body 12, which are bolted when not in use. The bottom of the furnace is provided with parallel arranged S310 refractory stainless steel beams, which play a load-bearing role. The spacing between the stainless steel beams is 150cm, and the middle of the steel beams is filled with refractory bricks to ensure that the bottom of the furnace body is stressed while meeting the flatness requirements.
[0054] Optionally, refer to Figure 1The temperature control module 40 includes a thermocouple 41, a heating wire (not shown in the figure) and a temperature control system 42 connected to the thermocouple 41 and the heating wire; the thermocouple 41 is arranged inside the high-temperature accommodation module 10 to sense the temperature inside the high-temperature accommodation module 10; the heating wire is arranged inside the high-temperature accommodation module 10, and the temperature control system 42 receives the temperature signal from the thermocouple 41 and controls the operation of the heating wire to control the internal temperature of the high-temperature accommodation module 10.
[0055] Specifically, since the device needs to maintain a specific temperature inside the high-temperature containment module 10 to obtain the mechanical performance parameters at a specific temperature when testing the mechanical properties of the specimen, the temperature control module 40 senses the temperature inside the high-temperature containment module 10 through the thermocouple 41 and adjusts the internal temperature through the heating wire; illustratively, the temperature control module 40 can be software-programmed through the PID control method. The temperature control module 40 has two control modes. It can heat up and maintain a constant temperature according to a single fixed temperature, and it can also perform process control on the heating curve. During the heating process, the target temperature can also be modified in real time to meet a variety of thermal conditions and heat treatment requirements. In addition, the temperature control module 40 can also view and record the temperature curve in real time and send data for subsequent processing.
[0056] Table 1 shows the heating stages and heating times of the temperature control module when the set temperatures of the high temperature containment module are 200 degrees, 400 degrees and 600 degrees.
[0057]
[0058] Referring to Table 1, when a high-temperature axial compression test is required for a masonry column reinforced with a carbon fiber reinforced mortar surface layer, the temperature is first raised to a predetermined temperature (200°C, 400°C and 600°C) at a rate of 20°C / min, and then the temperature is kept constant for 2 hours, and then the load is applied under a predetermined condition until the specimen is destroyed. In order to prevent the mortar surface layer from bursting due to factors such as moisture content and porosity during rapid temperature rise, the test is affected by the constant temperature at 200°C for 20 minutes to evaporate the moisture in the specimen. Figure 4 is a stress-strain curve diagram of a column component at 600°C provided by an embodiment of the utility model, Figure 4 It can be seen that the stress change process of the column component during the load application at 600 degrees.
[0059] In an optional embodiment of the present invention, a thermocouple may be pre-buried inside the test piece 50 ; the temperature inside the test piece 50 is obtained through the thermocouple inside the test piece 50 .
[0060] Optionally, an insulation layer (not shown in the figure) is also provided in the high-temperature containment module 10; the insulation layer is located between the heating wire and the inner wall of the high-temperature containment module 10 to increase the insulation effect of the internal environment of the high-temperature containment module 10. Exemplarily, the thickness of the insulation layer can be 250 mm to ensure that the internal temperature will not be transmitted to the outside of the high-temperature containment module 10.
[0061] Optionally, Figure 5 This is a schematic diagram of the connection between the first hoop and the furnace cover provided by the embodiment of the utility model, referring to Figure 5 , a first clamp 221 is arranged around the outer tube wall of the pressure head extension tube 22; a first pull ring 2211 is respectively arranged on both sides of the first clamp 221 in the first direction x; the first direction x is perpendicular to the extension direction of the pressure head extension tube 22 and the plane is parallel to the main facade of the high-temperature loading module 10; four lifting ears 121 are arranged on the surface of the furnace cover 12 facing the piston 23; the four lifting ears 121 are arranged in pairs on both sides of the furnace cover 12 surface in the first direction x, and a group of lifting ears 121 and a first pull ring 2211 are arranged on the same side; a first pull ring 2211 is connected to a group of lifting ears 121 through a first steel wire rope S1, so that the first clamp 221 is connected to the four lifting ears 121 through two first steel wire ropes S1, so that when the pressure head extension tube 22 drives the first clamp 221 to move in the direction away from the furnace cover 12, the lifting ear 121 is pulled by the first steel wire rope S1 to open the furnace cover 12.
[0062] Specifically, refer to Figure 1 , when the furnace cover 12 needs to be opened to place the test piece 50 inside the furnace body 12, refer to Figure 1 A first clamp 221 is arranged around the outer tube wall of the pressure head extension tube 22, and the first clamp 221 is connected to the furnace cover 12 through a first pull ring 2211 and a first steel wire rope S1. The first clamp 221 is driven upward by the pressure head extension tube 22 to open the furnace cover 12.
[0063] Optionally, continue to refer to Figure 1 A second clamp 222 is disposed around the outer tube wall of the pressure head extension tube 22; the second clamp 222 is located on a side of the first clamp 221 close to the furnace cover 12; Figure 6 This is a schematic diagram of the connection between the second hoop and the furnace cover provided by the embodiment of the utility model, referring to Figure 6 The second clamp 222 is provided with a second pull ring 2221 on both sides of the first direction x; the projections of the two second pull rings 2221 on the furnace cover 12 coincide with the projections of the two first pull rings on the furnace cover; a second pull ring 2221 is connected to a group of lifting ears through a second steel wire rope S2, so that the second clamp 222 is connected to four lifting ears through two second steel wire ropes S2; wherein the length of the second steel wire rope S2 is greater than or equal to the length of the first steel wire rope S1.
[0064] Specifically, the outer tube wall of the pressure head extension tube 22 is also surrounded by a second clamp 222, and the second clamp 222 is respectively provided with a second pull ring 2221 on both sides of the first direction x; a second pull ring 2221 is connected to a group of lifting ears through a second steel wire rope S2, so that the furnace cover 12 is connected to the second clamp 222 through the second steel wire rope S2, and the length of the second steel wire rope S2 is greater than or equal to the length of the first steel wire rope S1; when the furnace cover 12 needs to be pulled, the pressure head extension tube 22 is controlled to move upward, at this time the first steel wire rope S1 is tightened, and the furnace cover 12 is pulled by force, and the second clamp 222 is located below the first clamp 221, so the second steel wire rope S2 with a length greater than or equal to the first steel wire rope S1 is in a relaxed state, reducing the potential strength attenuation caused by factors such as fatigue. When the first steel wire rope S1 is disconnected, the second steel wire rope S2 is forced to pull the furnace cover 12 open, increasing safety.
[0065] Optionally, the specimen deformation acquisition module 30 includes a wire-pull displacement sensor 31, a high-temperature resistant wire 32 and an expansion screw 33; the expansion screw 33 is pre-buried on the test piece 50, one end of the high-temperature resistant wire 32 is connected to the wire-pull displacement sensor 31, and the other end passes through the through hole at the top of the high-temperature containing module 10 into the high-temperature containing module 10 and is connected to the expansion screw 33; the wire-pull displacement sensor 31 detects the displacement change of the expansion screw 33 through the high-temperature resistant wire 32 to obtain the deformation parameters of the test piece 50. Exemplarily, the high-temperature resistant wire can be a nickel-chromium alloy wire.
[0066] Specifically, the expansion screw 33 is pre-buried inside the test piece 50. The test piece 50 will deform when it is in a high temperature environment and is subjected to a load, and will exemplarily become longer. The expansion screw 33 inside it will change in displacement as the test piece 50 is deformed. Therefore, the expansion screw 33 is connected to the wire displacement sensor 31 through a high temperature resistant wire 32. The wire displacement of the expansion screw 33 when no high temperature and load are applied to the test piece 50, as well as the displacement after high temperature and load are applied, are detected by the wire displacement sensor 31, so that the deformation parameters of the test piece 50 can be obtained.
[0067] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. A high temperature mechanical properties testing device, characterized in that: It includes a high temperature containing module, a mechanical testing module, a specimen deformation collection module and a temperature control module; The high-temperature containing module is hollow inside to accommodate the test piece; the mechanical test module includes a testing machine and a pressure head extension tube, the testing machine is arranged above the high-temperature containing module, the pressure head extension tube is arranged between the testing machine and the high-temperature containing module, and one end of the pressure head extension tube in the extending direction is connected to the testing machine, and the other end extends into the interior of the high-temperature containing module to contact the test piece; The testing machine applies a load to the test piece through the pressure head extension tube, so that the test piece is deformed under the force; the temperature control module collects the ambient temperature inside the high-temperature containing module and controls the temperature of the high-temperature containing module; the test piece deformation collection module contacts the test piece to collect the deformation parameters of the test piece.
2. The testing device according to claim 1, characterized in that: It also includes a test fixture module; the test fixture module is located inside the high-temperature containing module and is placed above the test piece; the side of the test fixture module away from the test piece is fixedly connected to the pressure head extension tube; The testing machine applies a load to the testing fixture module through the pressure head extension tube, so that the to-be-tested piece placed under the testing fixture module is deformed.
3. The testing device according to claim 2, characterized in that: The test fixture module includes a high-temperature four-point bending test fixture for beam components; The high-temperature four-point bending test fixture for beam components comprises a distribution beam and two supports; the test piece is placed between the two supports and the distribution beam, and the distribution beam is located on a side surface of the test piece close to the pressure head extension tube; The distribution beam is provided with two parallel supporting structures on the side facing the test piece, and contacts the test piece through the two supporting structures; the distribution beam is provided with a first protruding structure on the side facing the pressure head extension tube; the first protruding structure is provided with a groove that fits with the bottom end of the pressure head extension tube on the side facing the pressure head extension tube; the bottom end of the pressure head extension tube is embedded in the groove to be fixedly connected with the distribution beam.
4. The testing device according to claim 2, characterized in that: The test fixture module includes a column component high temperature compression test fixture; The high-temperature compression test fixture for column components includes a pressure plate; the pressure plate is placed on the surface of one side of the test piece close to the pressure head extension tube, and a second protrusion structure is provided on the side of the pressure plate close to the pressure head extension tube, and a groove that fits with the bottom end of the pressure head extension tube is provided on the side of the second protrusion structure facing the pressure head extension tube; the bottom end of the pressure head extension tube is embedded in the groove to be fixedly connected to the pressure plate.
5. The testing device according to claim 1, characterized in that: The mechanical test module further includes a piston, which is disposed between the test machine and the pressure head extension tube; and the extension direction of the piston is the same as the extension direction of the pressure head extension tube; Along the extension and retraction direction of the piston, one end of the piston is connected to one end of the pressure head extension tube, and the other end is connected to the testing machine; The testing machine controls the expansion and contraction of the piston to drive the pressure head extension tube to move, so as to apply a load to the test piece to cause the test piece to deform.
6. The testing device according to claim 1, characterized in that: The high temperature containing module is a high temperature furnace; the high temperature furnace comprises a furnace body and a furnace cover located on the top of the furnace body; the test piece is located inside the furnace body; and a through hole is provided on the furnace cover for passing the pressure head extension tube.
7. The testing device according to claim 1, characterized in that: The temperature control module includes a thermocouple, a heating wire and a temperature control system connected to the thermocouple and the heating wire; The thermocouple is disposed inside the high temperature accommodation module to sense the temperature inside the high temperature accommodation module; The heating wire is arranged inside the high-temperature accommodation module, and the temperature control system receives a temperature signal from the thermocouple and controls the heating wire to operate, so as to control the internal temperature of the high-temperature accommodation module.
8. The testing device according to claim 7, characterized in that: A heat-insulating layer is also provided in the high-temperature accommodation module; the heat-insulating layer is located between the heating wire and the inner wall of the high-temperature accommodation module.
9. The testing device according to claim 6, characterized in that: A first clamp is arranged around the outer tube wall of the pressure head extension tube; a first pull ring is arranged on both sides of the first clamp in a first direction; the first direction is perpendicular to the extension direction of the pressure head extension tube and the plane is parallel to the main facade of the high temperature loading module; The furnace cover is provided with four lifting ears on one side of the surface facing the piston; the four lifting ears are arranged in groups of two on both sides of the furnace cover surface in the first direction, and a group of the lifting ears and one of the first pull rings are arranged on the same side; One of the first pull rings is connected to a group of the lifting ears through a first steel wire rope, so that the first clamp is connected to four of the lifting ears through two of the first steel wire ropes. When the pressure head extension tube drives the first clamp to move in a direction away from the furnace cover, the lifting ears are pulled by the first steel wire rope to open the furnace cover.
10. The testing device according to claim 9, characterized in that: A second clamp is disposed around the outer tube wall of the pressure head extension tube; the second clamp is located on a side of the first clamp close to the furnace cover; The second hoop is provided with a second pull ring on both sides of the first direction; the projections of the two second pull rings on the furnace cover overlap with the projections of the two first pull rings on the furnace cover; One of the second pull rings is connected to a group of the lifting ears through a second steel wire rope, so that the second clamp is connected to four of the lifting ears through two of the second steel wire ropes; wherein the length of the second steel wire rope is greater than or equal to the length of the first steel wire rope.
11. The testing device according to claim 1, characterized in that: The specimen deformation acquisition module includes a wire-drawing displacement sensor, a high-temperature-resistant wire and an expansion screw; The expansion screw is pre-buried on the test piece, one end of the high temperature resistant wire is connected to the wire-drawing displacement sensor, and the other end enters the high temperature accommodation module through the through hole reserved at the top of the high temperature accommodation module and is connected to the expansion screw; The wire-pull type displacement sensor detects the displacement change of the expansion screw through the high temperature resistant wire to obtain the deformation parameters of the test piece.