Device and method for detecting shear mechanical properties of refractory mortar under high temperature and different atmospheres

Abstract

The application relates to a device and method for detecting the shearing mechanical property of refractory mortar under high temperature and different atmospheres, and relates to the field of measurement. The device for detecting the shearing mechanical property of refractory mortar under high temperature and different atmospheres is used for testing a masonry sample composed of a lower masonry test block, refractory mortar and an upper masonry test block, and comprises a protection box, a heating furnace and a gas pipeline arranged in the protection box. The heating furnace is connected with a heating element, a force-adding push rod capable of horizontally moving to push the upper masonry test block and a temperature sensor used for detecting temperature. A stop block used for limiting the position of the lower masonry test block is arranged in the heating furnace. The force-adding push rod is connected with an electric push rod used for driving the force-adding push rod to move. The gas pipeline is connected with a first pipeline and a second pipeline which are respectively communicated with the protection box and the heating furnace. First and second electromagnetic valves are arranged on the first pipeline and the second pipeline respectively. The device and method for detecting the shearing mechanical property of refractory mortar under high temperature and different atmospheres can accurately detect the shearing property of the refractory mortar under high temperature and different atmospheres.

Description

Technical Field

[0001] The present application relates to the field of measurement, and in particular to a device and method for detecting the shear mechanical properties of refractory slurry under high temperature and different atmospheres. Background Art

[0002] The application of refractory materials in high-temperature industries such as steel, nonferrous metals, and glass is becoming increasingly widespread. As an important component of refractory materials, the performance of refractory slurry is directly related to the stability and safety of the entire production line. Therefore, it is particularly important to test the high-temperature performance of refractory slurry.

[0003] Refractory materials also play an important role in the development of hydrogen metallurgy technology. Since hydrogen metallurgy needs to be carried out in a high temperature and reducing atmosphere, higher requirements are placed on the performance of refractory materials. In particular, connecting materials such as refractory slurries need to have good high temperature stability, reduction resistance and corrosion resistance to ensure the smooth progress of the entire metallurgical process.

[0004] Currently, there is no device or method that can accurately detect the shear mechanical properties of refractory slurry under high temperature and different atmospheres. Summary of the Invention

[0005] The purpose of the present application is to provide a device and method for detecting the shear mechanical properties of refractory slurry at high temperatures and in different atmospheres, which can accurately detect the shear properties of refractory slurry at high temperatures and in different atmospheres.

[0006] This application is implemented as follows:

[0007] The present application provides a device for testing the shear mechanical properties of refractory slurry under high temperature and different atmospheres, which is used to test masonry specimens. The masonry specimens are composed of a lower masonry specimen block, refractory slurry and an upper masonry specimen block arranged in sequence from bottom to top, and include an openable and closable protection box, an openable and closable heating furnace and a gas pipeline arranged in the protection box. The heating furnace is connected to a heating element inserted into the interior thereof, a force-adding push rod that can move horizontally to push the upper masonry specimen block, and a temperature sensor for detecting the internal temperature of the heating furnace. A block for limiting the position of the lower masonry specimen block is provided in the heating furnace, the force-adding push rod is connected to an electric push rod for driving it to move horizontally, and the gas pipeline is connected to a first pipeline and a second pipeline that are respectively connected to the protection box and the heating furnace, and a first solenoid valve and a second solenoid valve are respectively provided on the first pipeline and the second pipeline.

[0008] In some optional embodiments, a hollow protective cover is provided on the inner wall of the protective box, and power lines of the heating element, temperature sensor and electric push rod respectively pass through the protective cover and then extend out of the protective box.

[0009] In some alternative embodiments, the gas pipe is connected with a third pipe in communication with the protective cover, and the third pipe is provided with a third electromagnetic valve.

[0010] In some alternative embodiments, a protective gas injection pipe in communication with the protective cover is further included, and the protective gas injection pipe is provided with a fourth electromagnetic valve.

[0011] In some alternative embodiments, the second pipe includes a second lower branch pipe extending through the inside and outside of the heating furnace, and a second upper branch pipe detachably connected to the second lower branch pipe and the gas pipe at two ends, respectively.

[0012] In some alternative embodiments, the protective cover is provided with a movable bottom support configured to support the heating furnace and move in or out of the protective cover.

[0013] In some alternative embodiments, the protective cover is connected with a moving mechanism configured to drive the movable bottom support to move in or out of the protective cover.

[0014] The application also provides a method for detecting the shear mechanical properties of refractory mortar under high temperature and different atmospheres, which is performed by using the above-mentioned device for detecting the shear mechanical properties of refractory mortar under high temperature and different atmospheres, and includes the following steps:

[0015] A masonry sample is prepared by arranging a refractory mortar between the upper masonry test block and the lower masonry test block arranged in a top-bottom manner;

[0016] The masonry sample is placed inside the heating furnace in the protective cover, the stop block limits the position of one end of the lower masonry test block, and the force applying push rod presses the other end of the upper masonry test block, and the heating furnace and the protective cover are closed;

[0017] The heating furnace and the protective cover are vacuumized;

[0018] The gas with the required atmosphere is introduced into the heating furnace, and the protective gas is introduced into the protective cover;

[0019] The heating element is controlled to heat the heating furnace to a preset temperature and maintain the temperature for a preset time;

[0020] The electric push rod is controlled to drive the force applying push rod to apply a pushing force to the masonry sample at a preset loading rate;

[0021] After the heating element is turned off and the heating furnace is cooled to room temperature, the gases in the heating furnace and the protective cover are discharged, and the masonry sample is taken out.

[0022] The beneficial effects of the present application are: the high-temperature and different atmosphere refractory mortar shear mechanical property detection device provided by the present application is used for testing the masonry sample, the masonry sample is composed of a lower masonry test block, a refractory mortar and an upper masonry test block arranged from bottom to top, and comprises an openable and closable protection box, an openable and closable heating furnace and a gas pipeline arranged in the protection box, the heating furnace is connected with a heating element inserted into the inside of the heating furnace, a force pushing rod capable of horizontally moving to push the upper masonry test block and a temperature sensor for detecting the temperature inside the heating furnace, the heating furnace is provided with a stop block for limiting the position of the lower masonry test block, the force pushing rod is connected with an electric pushing rod for driving the electric pushing rod to move in the horizontal direction, and the gas pipeline is connected with a first pipeline and a second pipeline in communication with the protection box and the heating furnace respectively, and the first pipeline and the second pipeline are respectively provided with a first electromagnetic valve and a second electromagnetic valve. The high-temperature and different atmosphere refractory mortar shear mechanical property detection device and method provided by the present application can accurately detect the shear mechanical property of the refractory mortar under high temperature and different atmosphere. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 The cross-sectional structure schematic diagram of the high-temperature and different atmosphere refractory mortar shear mechanical property detection device provided by the embodiments of the present application.

[0025] In the figure: 100, protection box; 101, box door; 110, protection cover; 120, movable bottom support; 200, heating furnace; 201, furnace door; 210, heating element; 220, force pushing rod; 230, temperature sensor; 240, stop block; 250, electric pushing rod; 300, gas pipeline; 310, first pipeline; 311, first electromagnetic valve; 320, second pipeline; 321, second electromagnetic valve; 322, second lower branch pipe; 323, second upper branch pipe; 330, third pipeline; 331, third electromagnetic valve; 340, protection gas injection pipe; 341, fourth electromagnetic valve; 350, isolation electromagnetic valve; 400, lower masonry test block; 410, refractory mortar; 420, upper masonry test block. DETAILED DESCRIPTION

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0028] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0033] The features and performances of the high-temperature and different atmosphere refractory mortar shear mechanical property detection device and method of the present application are further described in detail below in combination with the embodiments.

[0034] As shown in Figure 1 The present application provides a high-temperature and different atmosphere refractory mortar shear mechanical property detection device for testing the shear performance of a masonry sample under different temperatures and atmospheres. The masonry sample is composed of a lower masonry test block 400, a refractory mortar 410, and an upper masonry test block 420 arranged in order from bottom to top. The high-temperature and different atmosphere refractory mortar shear mechanical property detection device includes a protective box 100 with an openable and closable box door 101, a heating furnace 200 with an openable and closable furnace door 201, and a gas pipeline 300 fixed above the protective box 100. The heating furnace 200 is used to accommodate the masonry sample for testing.

[0035] The inner bottom wall of the protective box 100 is provided with a movable bottom support 120 for supporting the heating furnace 200. The heating furnace 200 is arranged on the movable bottom support 120. The top of the heating furnace 200 is connected with a heating element 210 inserted into its interior. The end of the heating furnace 200 away from the furnace door is connected with a force-adding push rod 220 that can move horizontally to push the upper masonry test block 420 towards the furnace door, and a temperature sensor 230 for detecting the temperature inside the heating furnace 200. The heating furnace 200 is provided with a stop block 240 for blocking the movement of the lower masonry test block 400 towards the furnace door. The force-adding push rod 220 is connected with an electric push rod 250 for driving it to move in the horizontal direction. The inner wall of the protective box 100 is provided with a hollow protective cover 110. The power lines of the heating element 210, the temperature sensor 230, and the electric push rod 250 respectively pass through the protective cover 110 and then extend out of the protective box 100.

[0036] The gas pipeline 300 is connected with a first pipeline 310, a second pipeline 320 and a third pipeline 330, the first pipeline 310 extends into and communicates with the protection box 100, the first pipeline 310 is provided with a first electromagnetic valve 311, the second pipeline 320 penetrates through the top of the protection box 100 and extends into the heating furnace 200, the second pipeline 320 is provided with a second electromagnetic valve 321, the third pipeline 330 penetrates through the top of the protection box 100 and extends into the protection cover 110, the third pipeline 330 is provided with a third electromagnetic valve 331, the protection box 100 is connected with a protection gas injection pipeline 340, and the protection gas injection pipeline 340 is provided with a fourth electromagnetic valve 341. The second pipeline 320 includes a second lower branch pipe 322 penetrating through the inside and outside of the heating furnace 200 and a second upper branch pipe 323 which is detachably connected to the second lower branch pipe 322 and the gas pipeline 300 at two ends, respectively, and the second electromagnetic valve 321 is arranged on the second upper branch pipe 323. The gas pipeline 300 is provided with an isolation electromagnetic valve 350 at each end, and the isolation electromagnetic valves 350 are arranged in the gas pipeline 300 between the first pipeline 310 and the second pipeline 320 and between the first pipeline 310 and the third pipeline 330, respectively.

[0037] The application further provides a method for detecting the shear mechanical properties of refractory mortar under high temperature and different atmospheres, which is performed by using the detection device for detecting the shear mechanical properties of refractory mortar under high temperature and different atmospheres, and includes the following steps.

[0038] Step one, placing the upper masonry test block 420 on the top of the lower masonry test block 400 after smearing the refractory mortar 410 on the top of the lower masonry test block 400 to prepare a masonry test sample;

[0039] Step two, opening the door 101 of the protection box 100 and the door 201 of the heating furnace 200, placing the masonry test sample in the heating furnace 200 in the protection box 100, limiting the position of the lower masonry test block 400 close to the door of the heating furnace by the stop block 240, and pressing the end of the upper masonry test block 420 away from the door of the heating furnace by the force pushing rod 220, and then closing the door 201 of the heating furnace 200 and the door 101 of the protection box 100;

[0040] Step three, opening the first electromagnetic valve 311, the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350, and then connecting the gas pipeline 300 to the vacuum pump through the first pipeline 310 and the second pipeline 320 to vacuumize the heating furnace 200 and the protection box 100, and then closing the first electromagnetic valve 311, the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350;

[0041] Step four, connect the gas pipeline 300 to the test gas cylinder, control the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to open the required test atmosphere gas into the heating furnace 200 through the gas pipeline 300 and the second pipeline 320, then control the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to close, connect the gas pipeline 300 and the protective gas injection pipe 340 to the protective gas cylinder, control the corresponding isolation electromagnetic valve 350 to open, and then control the fourth electromagnetic valve 341 to open the protective gas into the protective box 100 through the protective gas injection pipe 340, and then control the first electromagnetic valve 311 and the corresponding isolation electromagnetic valve 350 to open the protective gas into the protective cover 110 through the gas pipeline 300 and the third pipeline 330, then control the first electromagnetic valve 311, the fourth electromagnetic valve 341 and the corresponding isolation electromagnetic valve 350 to close;

[0042] Step five, control the heating element 210 to heat the heating furnace 200 to the preset temperature and keep it for a preset time;

[0043] Step six, control the electric push rod 250 to drive the force push rod 220 to apply a pushing force to the masonry sample at a preset loading rate;

[0044] Step seven, control the heating element 210 to close, and after the heating furnace 200 cools to room temperature, control the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to open the test gas in the heating furnace 200 through the second pipeline 320 and the gas pipeline 300, control the first electromagnetic valve 311, the third electromagnetic valve 331 and the corresponding isolation electromagnetic valve 350 to open, and then control the protective gas in the protective box 100 and the protective cover 110 to open, open the protective box 100 door 101 and the heating furnace 200 door 201 to take out the masonry sample and record the test data.

[0045] The high-temperature and different atmosphere refractory mortar shear mechanical property detection device and method provided by the embodiment of the application can accommodate the heating furnace 200 by arranging the protection box 100, and can pass the test atmosphere into the heating furnace 200 through the gas pipeline 300 and the second pipeline 320, pass the protective atmosphere into the heating furnace 200 through the gas pipeline 300 and the first pipeline 310, and pass the protective atmosphere into the protection cover 110 through the gas pipeline 300 and the third pipeline 330, so that the heating furnace 200 can be used to heat the masonry test sample composed of the lower masonry test block 400, the refractory mortar 410 and the upper masonry test block 420 arranged from bottom to top in sequence to a preset temperature, the stop block 240 arranged in the heating furnace 200 can be used to block the movement of the lower masonry test block 400 towards the furnace door, and the power push rod 250 can be used to push the force applying push rod 220 to push the upper masonry test block 420 away from one end of the furnace door 201 towards the furnace door, so that the shear force test can be performed on the bottom and top of the lower masonry test block 400, the refractory mortar 410 and the upper masonry test block 420 under the preset temperature and test atmosphere, the power supply lines of the temperature sensor 230 and the power push rod 250 can be respectively extended out of the protection box 100 after passing through the protection cover 110, the protective atmosphere in the protection cover 110 can be used to ensure the airtightness and safety of the power supply lines, and the harm caused by the leakage of the test atmosphere can be eliminated, so that the high-temperature performance test of the flammable, explosive or toxic and harmful test atmosphere such as hydrogen and carbon monoxide can be realized.

[0046] The bottom wall in the protection box 100 is provided with a movable bottom support 120 for supporting the heating furnace 200, the heating furnace 200 is arranged on the movable bottom support 120, the second upper branch pipe 323 and the second lower branch pipe 322 can be separated after the test is completed, and then the movable bottom support 120 is dragged to drive the supported heating furnace 200 to translate and be dragged out of the protection box 100 as a whole, so that the equipment maintenance and repair of the heating furnace 200 are facilitated.

[0047] Embodiment 1

[0048] The embodiment of the application provides a high-temperature and different atmosphere refractory mortar shear mechanical property detection method, which is performed by using the high-temperature and different atmosphere refractory mortar shear mechanical property detection device, and includes the following steps:

[0049] Step one, prepare the masonry test sample according to the specification of the refractory mortar product to be detected, the masonry test sample is obtained by bonding two lower masonry test blocks 400 and upper masonry test blocks 420 of the same size (100mm*100mm*50mm) through the refractory mortar 410, and is subjected to 24h heating and drying treatment at 110℃;

[0050] Step two, open the door 101 of the protection box 100 and the door 201 of the heating furnace 200, place the masonry sample inside the heating furnace 200 in the protection box 100, and make the stop block 240 limit the position of the lower masonry sample 400 near the door of the heating furnace 200, and make the force pushing rod 220 press the upper masonry sample 420 away from the door of the heating furnace 200, close the door 101 of the protection box 100 and the door 201 of the heating furnace 200;

[0051] Step three, control the first electromagnetic valve 311, the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to open, use the vacuum pump to connect the gas pipeline 300 to vacuumize the heating furnace 200 and the protection box 100 through the first pipeline 310 and the second pipeline 320, when the air pressure controller shows that the vacuum state is reached, control the first electromagnetic valve 311, the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to close, stop vacuumizing;

[0052] Step four, connect the gas pipeline 300 to the test gas compressed gas tank, control the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to open to pass hydrogen into the heating furnace 200 through the gas pipeline 300 and the second pipeline 320, then control the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to close, connect the gas pipeline 300 and the protection gas injection pipeline 340 to the protection gas compressed gas tank, control the corresponding isolation electromagnetic valve 350 to open to pass the protective gas nitrogen into the gas pipeline 300 to discharge the test gas, control the fourth electromagnetic valve 341 to open to pass the protective gas nitrogen into the protection box 100 through the protection gas injection pipeline 340, control the first electromagnetic valve 311 and the corresponding isolation electromagnetic valve 350 to open to pass the protective gas nitrogen into the protection box 100 through the gas pipeline 300 and the third pipeline 330, balance the pressure in the protection box 100 and the pressure in the heating furnace 200, then control the first electromagnetic valve 311, the fourth electromagnetic valve 341 and the corresponding isolation electromagnetic valve 350 to close;

[0053] Step five, control the heating element 210 to heat the heating furnace 200 to the preset temperature 1200℃ and keep warm for 180min, during which the hydrogen atmosphere required for the test is continuously maintained in the heating furnace 200, and the heating element 210 in the heating furnace 200 is high-purity molybdenum wire (molybdenum content 99.99%);

[0054] Step six, after the masonry sample is kept warm in the high-temperature heating furnace 200 for 180min, control the electric push rod 250 to apply a pushing force to the upper masonry sample 420 of the test masonry sample, when the value in the pushing force intensity controller starts to weaken after passing through the peak value, control the electric push rod 250 to stop working, and record the peak value of the pushing force intensity;

[0055] Step seven, after the test is completed, power off and close all valves, the high temperature heating furnace 200 is cooled to room temperature, the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 are opened to discharge the test gas in the heating furnace 200 through the second pipeline 320 and the gas pipeline 300, the first electromagnetic valve 311, the third electromagnetic valve 331 and the corresponding isolation electromagnetic valve 350 are opened to discharge the protective gas in the protective box 100 and the protective cover 110, the box door 101 of the protective box 100 and the furnace door 201 of the heating furnace 200 are opened to take out the masonry sample and record the test data

[0056] Step eight, repeat the above steps one to seven, and replace the test gas atmosphere hydrogen with coal to detect the high temperature performance of the fire-resistant mortar in the coal gas.

[0057] Example 2

[0058] The embodiment of the application provides a detection method for the shear mechanical properties of fire-resistant mortar under high temperature and different atmospheres, which is performed by using the detection device for the shear mechanical properties of fire-resistant mortar under high temperature and different atmospheres, and includes the following steps.

[0059] Step one, prepare the masonry sample for detection according to the specification of the fire-resistant mortar product to be detected, the masonry sample is a magnesia carbon brick (150mm*40mm*40mm), and the masonry sample is heated and dried at 110 DEG C for 24 hours;

[0060] Step two, open the box door 101 of the protective box 100 and the furnace door 201 of the heating furnace 200, place the masonry sample in the heating furnace 200 in the protective box 100, make the stop block 240 limit the position of the lower masonry sample 400 close to one end of the furnace door, and make the force pushing rod 220 press the upper masonry sample 420 away from one end of the furnace door, close the furnace door 201 of the heating furnace 200 and the box door 101 of the protective box 100, the stop block 240 is made of corundum, the height is 75mm, and the width is 41mm;

[0061] Step three, control the first electromagnetic valve 311, the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to be opened, connect the gas pipeline 300 through the first pipeline 310 and the second pipeline 320 by using the vacuum pump to vacuumize the heating furnace 200 and the protective box 100, when the air pressure controller displays the vacuum state, control the first electromagnetic valve 311, the second electromagnetic valve 321 and the corresponding isolation electromagnetic valve 350 to be closed to stop vacuumizing.

[0062] Step four, connect the gas pipeline 300 to the test gas cylinder, control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open the oxygen into the heating furnace 200 through the gas pipeline 300 and the second pipeline 320, then control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to close, connect the gas pipeline 300 and the protective gas injection pipe 340 to the protective gas cylinder, control the corresponding isolation solenoid valve 350 to open, and then control the fourth solenoid valve 341 to open the protective gas nitrogen into the protective box 100 through the protective gas injection pipe 340, control the first solenoid valve 311 and the corresponding isolation solenoid valve 350 to open, and then control the first solenoid valve 311, the fourth solenoid valve 341 and the corresponding isolation solenoid valve 350 to close;

[0063] Step five, control the heating element 210 to heat the heating furnace 200 to a preset temperature of 1400℃ and keep it for 30min, during which the test required hydrogen atmosphere is continuously maintained in the heating furnace 200, and the heating element 210 in the heating furnace 200 is high-purity molybdenum wire (molybdenum content 99.99%);

[0064] Step six, when the masonry sample is kept in the high-temperature heating furnace 200 for 180min, control the electric push rod 250 to apply a pushing force to the upper part of the masonry sample for testing, when the value in the pushing force intensity controller starts to weaken after passing through the peak value, control the electric push rod 250 to stop working, and record the peak value of the pushing force intensity;

[0065] Step seven, after the test is completed, power off and close all valves, after the high-temperature heating furnace 200 is cooled to room temperature, control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open the test gas in the heating furnace 200 through the second pipeline 320 and the gas pipeline 300, control the first solenoid valve 311, the third solenoid valve 331 and the corresponding isolation solenoid valve 350 to open, and then control the first solenoid valve 311, the third solenoid valve 331 and the corresponding isolation solenoid valve 350 to close.

[0066] In other optional embodiments, the movable base 120 is configured to be movable into or out of the protection box 100, and the protection box 100 is connected with a moving mechanism for driving the movable base 120 to move into or out of the protection box 100, which can be a pneumatic cylinder or an oil cylinder or other linear moving mechanism. When it is needed to drive the movable base 120 to move to drive the supported heating furnace 200 to move, only the second lower branch pipe 322 and the second upper branch pipe 323 in the second pipeline 320 are separated, and then the moving mechanism is used to drive the movable base 120 to move to drive the supported heating furnace 200 to move, so that the operating personnel can conveniently take out or put into the heating furnace 200 the masonry sample for viewing or testing.

[0067] The embodiments described above are part of the embodiments of the present application, rather than all the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

Claims

1. A device for detecting shear mechanical properties of refractory mortar under high temperature and different atmospheres, for testing a masonry specimen composed of a lower masonry test block, a refractory mortar, and an upper masonry test block arranged in order from the bottom to the top, characterized in that, The device comprises an openable and closable protection box, an openable and closable heating furnace and a gas pipeline arranged in the protection box, the heating furnace is connected with a heating element inserted into the inside of the heating furnace, a force pushing rod horizontally movable to push the upper masonry test block, and a temperature sensor for detecting the temperature inside the heating furnace, the heating furnace is provided with a stopper for limiting the position of the lower masonry test block, the force pushing rod is connected with an electric pushing rod for driving the force pushing rod to move in the horizontal direction, the gas pipeline is connected with a first pipeline, a second pipeline and a third pipeline, the first pipeline extends into the protection box and communicates with the protection box, the first pipeline is provided with a first electromagnetic valve, the second pipeline penetrates through the top of the protection box and penetrates into the heating furnace, the second pipeline is provided with a second electromagnetic valve, the inner wall of the protection box is provided with a hollow protection cover, the third pipeline penetrates through the top of the protection box and penetrates into the protection cover, the third pipeline is provided with a third electromagnetic valve, the protection box is communicated with a protective gas injection pipe, and the protective gas injection pipe is provided with a fourth electromagnetic valve; wherein the second pipeline comprises a second lower branch pipe penetrating through the inside and outside of the heating furnace and a second upper branch pipe detachably connected to the second lower branch pipe and the gas pipeline at two ends respectively, the second electromagnetic valve is arranged on the second upper branch pipe, and one isolation electromagnetic valve is arranged at two ends of the gas pipeline respectively, and isolation electromagnetic valves are arranged in the gas pipeline between the first pipeline and the second pipeline and between the first pipeline and the third pipeline respectively.

2. The high-temperature and different atmosphere refractory mortar shear mechanical property detection device according to claim 1, characterized in that, The power lines of the heating element, the temperature sensor and the electric pushing rod respectively penetrate through the protection cover and extend out of the protection box.

3. The high-temperature and different atmosphere refractory mortar shear mechanics performance detection device according to claim 1, characterized in that, The protection box is provided with a movable bottom support for supporting the heating furnace, and the movable bottom support is configured to be movable to extend into or out of the protection box.

4. The high-temperature and different atmosphere refractory mortar shear mechanical property detection device according to claim 3, characterized in that, The protection box is connected with a moving mechanism for driving the movable bottom support to move to extend into or out of the protection box.

5. A method for detecting the shear mechanical properties of high-temperature and different atmosphere refractory mortar, characterized in that, It is carried out by using the high-temperature and different atmosphere refractory mortar shear mechanical property detection device according to any one of claims 1 to 4, comprising the following steps: A masonry test sample is prepared by arranging refractory mortar between the upper and lower masonry test blocks arranged in the upper and lower positions; The masonry test sample is placed in the inside of the heating furnace in the protection box, the stopper limits the position of one end of the lower masonry test block, and the force pushing rod presses the other end of the upper masonry test block, and the heating furnace and the protection box are closed; The heating furnace and the protection box are vacuumized; The gas of the required atmosphere is introduced into the heating furnace, and the protective gas is introduced into the protection box; The heating element is controlled to heat the heating furnace to a preset temperature and keep the temperature for a preset time; The electric pushing rod is controlled to drive the force pushing rod to apply a pushing force to the masonry test sample at a preset loading rate; The heating element is controlled to be turned off, and after the heating furnace is cooled to room temperature, the gas in the heating furnace and the protection box is discharged, and the masonry test sample is taken out.

Images