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

Abstract

The invention discloses a device and a method for detecting shearing mechanical properties of refractory mortar under high temperature and different atmospheres, and relates to the field of measurement. The device for detecting the shearing mechanical properties of the refractory mortar under high temperature and different atmospheres is used for testing a masonry sample consisting of a lower masonry test block, the refractory mortar and an upper masonry test block, and comprises a protection box, and a heating furnace and a gas pipeline which are arranged in the protection box, the heating furnace is connected with a heating element, a stress application push rod capable of horizontally moving to push an upper masonry test block and a temperature sensor for detecting temperature, a stop block for limiting the position of a lower masonry test block is arranged in the heating furnace, and the stress application push rod is connected with an electric push rod for driving the stress application 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; and the first pipeline and the second pipeline are respectively provided with a first electromagnetic valve and a second electromagnetic valve. The device and the method for detecting the shearing mechanical properties of the refractory mortar under the high temperature and different atmospheres can accurately detect the shearing properties of the refractory mortar under the 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 shear mechanical properties of refractory slurry under high temperature and different atmospheres. Background Art

[0002] The application of refractory materials in high-temperature industrial fields such as steel, non-ferrous metals, and glass is becoming more and more widespread. As an important component of refractory materials, the performance of refractory mud 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 mud.

[0003] Refractory materials also play an important role in the development of hydrogen metallurgical technology. Since the hydrogen metallurgical process 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 under high temperature and different atmospheres, which can accurately detect the shear properties of refractory slurry under high temperature and 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 for testing masonry specimens. The masonry specimens are composed of a lower masonry test block, refractory slurry and an upper masonry test 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 with a heating element inserted into the interior thereof, a booster push rod which can horizontally move and push the upper masonry test block, and a temperature sensor for detecting the internal temperature of the heating furnace. A block for limiting the position of the lower masonry test block is provided in the heating furnace. The booster push rod is connected with an electric push rod for driving it to move in a horizontal direction. The gas pipeline is connected with a first pipeline and a second pipeline which are respectively connected with the protection box and the heating furnace. 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, the temperature sensor and the electric push rod respectively pass through the protective cover and then extend out of the protective box.

[0009] In some optional embodiments, the gas pipeline is connected to a third pipeline communicated with the protective cover, and a third solenoid valve is provided on the third pipeline.

[0010] In some optional embodiments, it further includes a protective gas injection pipe connected to the protective box, and a fourth solenoid valve is provided on the protective gas injection pipe.

[0011] In some optional embodiments, the second pipeline includes a second lower branch pipe that runs through the inside and outside of the heating furnace and a second upper branch pipe whose two ends are detachably connected to the second lower branch pipe and the gas pipeline respectively.

[0012] In some optional embodiments, a movable base for supporting the heating furnace is provided in the protection box, and the movable base is configured to be movable and extend into or out of the protection box.

[0013] In some optional embodiments, the protection box is connected to a moving mechanism for driving the movable base to move into or out of the protection box.

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

[0015] A masonry specimen is prepared by placing refractory slurry between an upper masonry test block and a lower masonry test block arranged up and down;

[0016] Place the masonry specimen inside the heating furnace in the protection box, so that the stopper limits the position of one end of the lower masonry specimen, and the force push rod presses the other end of the upper masonry specimen, and close the heating furnace and the protection box;

[0017] Evacuate the heating furnace and the protective box;

[0018] Introduce the required atmosphere gas into the heating furnace, and introduce protective gas into the protection box;

[0019] Controlling the heating element to heat the heating furnace to a preset temperature and keep it warm for a preset time;

[0020] Control the electric push rod to drive the force push rod to apply thrust to the masonry specimen at a preset loading rate;

[0021] The heating element is controlled to be turned off and after the heating furnace has cooled to room temperature, the gas in the heating furnace and the protective box is exhausted and the masonry sample is taken out.

[0022] The beneficial effects of the present application are as follows: the refractory slurry shear mechanical properties testing device provided by the present application is used to test masonry specimens, the masonry specimens are composed of a lower masonry test block, refractory slurry and an upper masonry test block arranged in sequence from bottom to top, including 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 interior thereof, a booster push rod that can horizontally move and push the upper masonry test block and a temperature sensor for detecting the internal temperature of the heating furnace, a stopper for limiting the position of the lower masonry test block is provided in the heating furnace, the booster push rod is connected with an electric push rod for driving it to move in the horizontal direction, the gas pipeline is connected with 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. The refractory slurry shear mechanical properties testing device and method provided by the present application at high temperatures and in different atmospheres can accurately detect the shear mechanical properties of refractory slurry at high temperatures and in different atmospheres. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic cross-sectional structure diagram of a device for testing the shear mechanical properties of refractory slurry under high temperature and different atmospheres provided in an embodiment 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, booster push rod; 230, temperature sensor; 240, stopper; 250, electric push rod; 300, gas pipeline; 310, first pipeline; 311, first solenoid valve; 320, second pipeline; 321, second solenoid valve; 322, second lower branch pipe; 323, second upper branch pipe; 330, third pipeline; 331, third solenoid valve; 340, protection gas injection pipe; 341, fourth solenoid valve; 350, isolation solenoid valve; 400, lower masonry test block; 410, refractory mud; 420, upper masonry test block. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here 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 accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required 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", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the 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 are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The features and performances of the device and method for detecting shear mechanical properties of refractory slurry under high temperature and different atmospheres of the present application are further described in detail below in conjunction with the embodiments.

[0034] like Figure 1 As shown, the embodiment of the present application provides a refractory slurry shear mechanical performance testing device under high temperature and different atmospheres for testing the shear force performance of masonry samples under different temperatures and atmospheres, wherein the masonry sample is composed of a lower masonry test block 400, a refractory slurry 410 and an upper masonry test block 420 arranged in sequence from bottom to top; the refractory slurry shear mechanical performance testing device under high temperature and different atmospheres comprises a protection 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 fixedly arranged above the protection box 100, and the heating furnace 200 is used to accommodate the masonry sample for testing;

[0035] Among them, the inner bottom wall of 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 top of the heating furnace 200 is connected with a heating element 210 inserted into it, the end of the heating furnace 200 away from the furnace door is connected with a booster push rod 220 which can move horizontally to push the upper masonry test block 420 toward the furnace door and a temperature sensor 230 for detecting the internal temperature of the heating furnace 200, the heating furnace 200 is provided with a stopper 240 for blocking the lower masonry test block 400 from moving toward the furnace door, the booster 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 protection box 100 is provided with a hollow protection cover 110, and the power cords of the heating element 210, the temperature sensor 230 and the electric push rod 250 respectively pass through the protection cover 110 and then extend out of the protection box 100.

[0036] The gas pipeline 300 is connected to a first pipeline 310, a second pipeline 320 and a third pipeline 330. The first pipeline 310 extends into and is connected to the protection box 100. The first pipeline 310 is provided with a first solenoid valve 311. The second pipeline 320 passes through the top of the protection box 100 and then penetrates into the heating furnace 200. The second pipeline 320 is provided with a second solenoid valve 321. The third pipeline 330 passes through the top of the protection box 100 and then penetrates into the protection cover 110. The third pipeline 330 is provided with a third solenoid valve 331. The protection box 100 is connected to a protection gas injection pipe 340. The protection gas injection pipe 340 is provided with a fourth solenoid valve 341. Among them, the second pipeline 320 includes a second lower branch pipe 322 that runs through the inside and outside of the heating furnace 200 and a second upper branch pipe 323 whose two ends are detachably connected to the second lower branch pipe 322 and the gas pipeline 300, and the second solenoid valve 321 is arranged on the second upper branch pipe 323. An isolation solenoid valve 350 is respectively provided at both ends of the gas pipeline 300, and an isolation solenoid valve 350 is respectively provided in the middle of the gas pipeline 300, located between the first pipeline 310 and the second pipeline 320 and between the first pipeline 310 and the third pipeline 330.

[0037] The embodiment of the present application also provides a method for testing the shear mechanical properties of refractory slurry under high temperature and different atmospheres, which is performed using the above-mentioned refractory slurry shear mechanical properties testing device under high temperature and different atmospheres, and includes the following steps:

[0038] Step 1: Apply refractory slurry 410 on the top of the lower masonry test block 400 and then place the upper masonry test block 420 to prepare a masonry sample;

[0039] Step 2: 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, make the stopper 240 limit the position of one end of the lower masonry test block 400 close to the furnace door, and make the force push rod 220 press the end of the upper masonry test block 420 away from the furnace door, and close the furnace door 201 of the heating furnace 200 and the door 101 of the protection box 100;

[0040] Step 3: Control the first solenoid valve 311, the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open, use a vacuum pump to connect the gas pipeline 300 through the first pipeline 310 and the second pipeline 320 to evacuate the heating furnace 200 and the protection box 100, and then control the first solenoid valve 311, the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to close;

[0041] Step 4, connect the gas pipeline 300 to the test gas compressed gas tank, control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open, and introduce the required test atmosphere gas 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 compressed gas tank, control the corresponding isolation solenoid valve 350 to open, and after the protective gas is introduced into the gas pipeline 300 to discharge the test gas, control the fourth solenoid valve 341 to open and introduce the protective gas into the protection 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 introduce the protective gas into the protective cover 110 through the gas pipeline 300 and the third pipeline 330, and then control the first solenoid valve 311, the fourth solenoid valve 341 and the corresponding isolation solenoid valve 350 to close;

[0042] Step 5: Control the heating element 210 to heat the heating furnace 200 to a preset temperature and keep the temperature for a preset time;

[0043] Step 6: Control the electric push rod 250 to drive the force push rod 220 to apply thrust to the masonry sample at a preset loading rate;

[0044] Step seven, control the heating element 210 to close and wait for the heating furnace 200 to cool to room temperature, control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open, and discharge 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, discharge the protective gas in the protection box 100 and the protective cover 110, open the box door 101 of the protection box 100 and the furnace door 201 of the heating furnace 200, take out the masonry sample and record the test data.

[0045] The device and method for detecting the shear mechanical properties of refractory slurry under high temperature and different atmospheres provided in the embodiment of the present application are provided with a protective box 100 to accommodate a heating furnace 200, and a gas pipeline 300 and a first pipeline 310, a second pipeline 320 and a third pipeline 330. The test atmosphere is introduced into the heating furnace 200 through the gas pipeline 300 and the second pipeline 320, and the protective atmosphere is introduced into the heating furnace 200 through the gas pipeline 300 and the first pipeline 310. At the same time, the protective atmosphere is introduced into the protective cover 110 through the gas pipeline 300 and the third pipeline 330. The heating furnace 200 can be used to heat the masonry test block 400, the refractory slurry 410 and the upper masonry test block 420 arranged from bottom to top to a preset temperature, and the heating furnace is used to heat the test sample. The block 240 arranged in 200 blocks the lower masonry test block 400 from moving toward the furnace door, and the electric push rod 250 is used to push the force push rod 220 to push the end of the upper masonry test block 420 away from the furnace door 201 toward the furnace door, so as to implement shear force testing on the bottom and top of the lower masonry test block 400, the refractory mud 410 and the upper masonry test block 420 under the preset temperature and test atmosphere, and the power cords of the temperature sensor 230 and the electric push rod 250 are respectively passed through the protective cover 110 and then extended out of the protective box 100, the protective atmosphere introduced into the protective cover 110 can be used to ensure the airtightness and safety of the power cord, and the hazards caused by the leakage of the test atmosphere can be eliminated, thereby realizing high temperature performance testing in the atmosphere of flammable, explosive or toxic and harmful test gases such as hydrogen and carbon monoxide.

[0046] Among them, the inner bottom wall of 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. When the test is completed, the second upper branch pipe 323 and the second lower branch pipe 322 can be separated, and then the movable bottom support 120 can be dragged to drive the supported heating furnace 200 to move horizontally and be dragged out of the protection box 100 as a whole, which provides convenience for the inspection and maintenance of the heating furnace 200 equipment.

[0047] Example 1

[0048] The embodiment of the present application provides a method for testing the shear mechanical properties of refractory slurry at high temperature and in different atmospheres, which is performed using the above-mentioned refractory slurry shear mechanical properties testing device at high temperature and in different atmospheres, and includes the following steps:

[0049] Step 1: Prepare the masonry specimen for the test according to the specifications of the refractory slurry product required for the test. The masonry specimen is obtained by bonding two lower masonry test blocks 400 and upper masonry test blocks 420 of the same size (100mm×100mm×50mm) by refractory slurry 410, and then heat-drying at 110°C for 24 hours;

[0050] Step 2: 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, make the stopper 240 limit the position of one end of the lower masonry test block 400 close to the furnace door, and make the force push rod 220 press the end of the upper masonry test block 420 away from the furnace door, and close the furnace door 201 of the heating furnace 200 and the door 101 of the protection box 100;

[0051] Step 3: Control the first solenoid valve 311, the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open, use a vacuum pump to connect the gas pipeline 300 through the first pipeline 310 and the second pipeline 320 to evacuate the heating furnace 200 and the protection box 100, and when the air pressure controller shows that the vacuum state is reached, control the first solenoid valve 311, the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to close, and stop evacuating;

[0052] Step 4, connect the gas pipeline 300 to the test gas compressed gas tank, control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open, and introduce hydrogen 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 compressed gas tank, control the corresponding isolation solenoid valve 350 to open, and introduce protective gas nitrogen into the gas pipeline 300 to discharge the test gas, then control the fourth solenoid valve 341 to open, and introduce protective gas nitrogen into the protection 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 introduce protective gas nitrogen into the protection cover 110 through the gas pipeline 300 and the third pipeline 330 to balance the pressure in the protection box 100 with the pressure in the heating furnace 200, then control the first solenoid valve 311, the fourth solenoid valve 341 and the corresponding isolation solenoid valve 350 to close;

[0053] Step 5: Control the heating element 210 to heat the heating furnace 200 to a preset temperature of 1200° C. and keep the temperature for 180 minutes, during which the heating furnace 200 continuously maintains the hydrogen atmosphere required for the test. The heating element 210 in the heating furnace 200 is a high-purity molybdenum wire (molybdenum content 99.99%).

[0054] Step 6: After the masonry sample is kept in the high-temperature heating furnace 200 for 180 minutes, the electric push rod 250 is controlled to apply a thrust to the upper masonry test block 420 of the test masonry sample. When the value in the thrust strength controller begins to weaken after reaching the peak value, the electric push rod 250 is controlled to stop working, and the peak value of the thrust strength is recorded;

[0055] Step 7. After the test is completed, turn off the power and close all valves. After the high-temperature heating furnace 200 cools to room temperature, control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open and discharge 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 discharge the protective gas in the protection box 100 and the protective cover 110. Open the door 101 of the protection box 100 and the door 201 of the heating furnace 200 to take out the masonry sample and record the test data.

[0056] Step 8: Repeat the above steps 1 to 7, and replace the test atmosphere hydrogen with coal to test the high temperature performance of the refractory slurry in the coal gas.

[0057] Example 2

[0058] The embodiment of the present application provides a method for testing the shear mechanical properties of refractory slurry at high temperature and in different atmospheres, which is performed using the above-mentioned refractory slurry shear mechanical properties testing device at high temperature and in different atmospheres, and includes the following steps:

[0059] Step 1: Prepare the masonry sample for the test according to the specifications of the refractory slurry product required for the test. The masonry sample is a magnesia carbon brick (150mm×40mm×40mm), and is heated and dried at 110°C for 24 hours;

[0060] Step 2: Open the door 101 of the protection box 100 and the furnace door 201 of the heating furnace 200, place the masonry sample inside the heating furnace 200 in the protection box 100, make the stopper 240 limit the position of one end of the lower masonry test block 400 close to the furnace door, and make the force push rod 220 press the end of the upper masonry test block 420 away from the furnace door, close the furnace door 201 of the heating furnace 200 and the door 101 of the protection box 100, the stopper 240 is made of corundum, with a height of 75 mm and a width of 41 mm;

[0061] Step 3: Control the first solenoid valve 311, the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open, use a vacuum pump to connect the gas pipeline 300 through the first pipeline 310 and the second pipeline 320 to evacuate the heating furnace 200 and the protection box 100, and when the air pressure controller shows that the vacuum state is reached, control the first solenoid valve 311, the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to close, and stop evacuating;

[0062] Step 4, connect the gas pipeline 300 to the test gas compressed gas tank, control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open, and pass 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 compressed gas tank, control the corresponding isolation solenoid valve 350 to open, and pass the protective gas nitrogen into the gas pipeline 300 to discharge the test gas, then control the fourth solenoid valve 341 to open, and pass the protective gas nitrogen into the protection 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 pass the protective gas nitrogen into the protection cover 110 through the gas pipeline 300 and the third pipeline 330 to balance the pressure in the protection box 100 with the pressure in the heating furnace 200, and then control the first solenoid valve 311, the fourth solenoid valve 341 and the corresponding isolation solenoid valve 350 to close;

[0063] Step 5: Control the heating element 210 to heat the heating furnace 200 to a preset temperature of 1400° C. and keep the temperature for 30 minutes, during which the heating furnace 200 continuously maintains the hydrogen atmosphere required for the test. The heating element 210 in the heating furnace 200 is a high-purity molybdenum wire (molybdenum content 99.99%);

[0064] Step 6: After the masonry sample is kept in the high-temperature heating furnace 200 for 180 minutes, the electric push rod 250 is controlled to apply a thrust to the upper part of the test masonry sample. When the value in the thrust strength controller begins to weaken after reaching the peak value, the electric push rod 250 is controlled to stop working, and the peak value of the thrust strength is recorded;

[0065] Step 7. After the test, turn off the power and close all valves. After the high-temperature heating furnace 200 cools to room temperature, control the second solenoid valve 321 and the corresponding isolation solenoid valve 350 to open to discharge 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, discharge the protective gas in the protection box 100 and the protective cover 110, open the box door 101 of the protection box 100 and the furnace door 201 of the heating furnace 200 to take out the masonry sample and record the test data.

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

[0067] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A device for testing the shear mechanical properties of refractory slurry under high temperature and different atmospheres, used for testing masonry specimens, wherein the masonry specimens are composed of a lower masonry test block, refractory slurry and an upper masonry test block arranged in sequence from bottom to top, characterized in that: It includes 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 interior, a force-added push rod which can move horizontally to push the upper masonry test block and a temperature sensor for detecting the internal temperature of the heating furnace, a block for limiting the position of the lower masonry test block is arranged in the heating furnace, the force-added push rod is connected with an electric push rod for driving it to move in the horizontal direction, the gas pipeline is connected with a first pipeline and a second pipeline which are respectively connected with the protection box and the heating furnace, and a first solenoid valve and a second solenoid valve are respectively arranged on the first pipeline and the second pipeline.

2. The device for detecting shear mechanical properties of refractory slurry under high temperature and different atmospheres according to claim 1 is characterized in that: The inner wall of the protection box is provided with a hollow protection cover, and the power lines of the heating element, the temperature sensor and the electric push rod respectively pass through the protection cover and then extend out of the protection box.

3. The device for detecting shear mechanical properties of refractory slurry under high temperature and different atmospheres according to claim 2 is characterized in that: The gas pipeline is connected to a third pipeline communicated with the protective cover, and a third solenoid valve is arranged on the third pipeline.

4. The refractory slurry shear mechanical properties testing device under high temperature and different atmospheres according to claim 1 is characterized in that: It also includes a protective gas injection pipe connected to the protection box, and a fourth solenoid valve is provided on the protective gas injection pipe.

5. The device for detecting shear mechanical properties of refractory slurry under high temperature and different atmospheres according to claim 1 is characterized in that: The second pipeline includes a second lower branch pipe that runs through the inside and outside of the heating furnace and a second upper branch pipe whose two ends are detachably connected to the second lower branch pipe and the gas pipeline.

6. The device for testing shear mechanical properties of refractory slurry under high temperature and different atmospheres according to claim 5, characterized in that: A movable bottom bracket for supporting the heating furnace is arranged in the protection box, and the movable bottom bracket is configured to be movable and extend into or out of the protection box.

7. The device for testing shear mechanical properties of refractory slurry under high temperature and different atmospheres according to claim 6, characterized in that: The protection box is connected with a moving mechanism for driving the movable base to move into or out of the protection box.

8. A method for testing the shear mechanical properties of refractory slurry under high temperature and different atmospheres, characterized in that: The method is carried out using a refractory slurry shear mechanical properties testing device under high temperature and different atmospheres as described in any one of claims 1 to 7, and comprises the following steps: A masonry specimen is prepared by placing refractory slurry between an upper masonry test block and a lower masonry test block arranged up and down; Place the masonry specimen inside the heating furnace in the protection box, so that the stopper limits the position of one end of the lower masonry specimen, and the force-applying push rod presses the other end of the upper masonry specimen, and close the heating furnace and the protection box; Evacuate the heating furnace and the protection box; Introducing a desired atmosphere gas into the heating furnace, and introducing a protective gas into the protection box; Controlling the heating element to heat the heating furnace to a preset temperature and keep the temperature for a preset time; Controlling the electric push rod to drive the force push rod to apply thrust to the masonry specimen 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 exhausted, and the masonry sample is taken out.

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