Heat treatment experiment equipment and heat treatment experiment method

Abstract

The invention discloses heat treatment experimental equipment and a heat treatment experimental method.The heat treatment experimental equipment comprises a first experimental container; the heating device can heat the first experiment container; the temperature gradient monitoring device is connected with the rock sample; the sample loading system can be used for loading a rock sample and enabling the rock sample to extend into or out of the first experiment container; the sample loading system can stretch a rock sample into the cooling system, the heat treatment experiment equipment can conveniently and rapidly carry out heat shock treatment on the rock sample and monitor the temperature gradient change in rock in real time, and a test method using the heat treatment equipment is rapid in operation and accurate in experiment.

Description

Technical Field

[0001] The present application is used in the technical field of thermal shock treatment of rock materials, and in particular relates to a thermal treatment experimental device and an experimental method. Background Art

[0002] During deep drilling, the drilling fluid cools the drill bit and also applies thermal shock to the surrounding rock, increasing the number of thermal cracks in the surrounding rock. On the one hand, this improves the rock breaking effect and makes drilling easier. On the other hand, it also damages the well wall, causing the degradation of the rock mass and creating safety hazards. In deep geothermal development, the use of geothermal energy is achieved by injecting cold water into the heat storage rock layer and then extracting hot water. While the hot rock is exchanging heat with the cold water, it is also affected by thermal shock. The cracks caused have the effect of increasing the heat exchange channel and improving the heat extraction efficiency. However, thermal shock can also cause the rupture of the geothermal well wall, causing the hole collapse phenomenon, affecting the safe use of geothermal wells. In addition, in high-temperature-related disasters in rock engineering (such as heat damage in deep mineral deposits, tunnel or mine fires, etc.), the impact of thermal shock on the surrounding rock cannot be ignored.

[0003] If a fire occurs in a rock engineering project, the surrounding rock will be exposed to a sudden high temperature environment. During the fire extinguishing process, the surrounding rock will experience rapid cooling. The resulting thermal shock may cause cracking and instability of the surrounding rock. The degradation of the rock mass will have a significant impact on the stability and service life of the engineering structure. The thermal shock phenomenon occurring in high-temperature rock mass will not only facilitate the exploitation of deep resources, but also pose a threat to the safety of rock engineering. Therefore, it is necessary to explore the distribution law and change characteristics of the internal temperature field and temperature gradient of rock samples during thermal shock treatment under different conditions. Summary of the invention

[0004] The purpose of the present application is to solve at least one of the technical problems existing in the prior art and to provide a heat treatment experimental device and an experimental method, wherein the heat treatment experimental device can conveniently and quickly perform thermal shock treatment on rock samples and monitor the changes in temperature gradient inside the rock in real time. The experimental method using the heat treatment device is fast to operate and the experiment is accurate.

[0005] The technical solution adopted by this application to solve its technical problem is:

[0006] A heat treatment experimental equipment, comprising

[0007] Connecting the temperature gradient monitoring device to the rock sample;

[0008] Mounting a rock sample on the sample loading system;

[0009] Placing the rock sample in the first experimental container, and heating the first experimental container by the heating device;

[0010] After heating is completed, the sample loading system moves the rock sample from the first experimental container to the cooling system;

[0011] The experimental acquisition data is analyzed by the temperature gradient monitoring device.

[0012] In certain embodiments of the present application, a rack is included, and the sample loading system and the first experimental container are sequentially arranged on the rack along the left-right direction, and the sample loading system can move relative to the rack along the left-right direction.

[0013] In certain embodiments of the present application, the cooling system includes a spray cooling device, and the spray cooling device includes a second experimental container installed on the rack, and a plurality of spray heads are arranged in the second experimental container.

[0014] In certain embodiments of the present application, the sample loading system includes a first sample loading device slidably connected to the frame, the first sample loading device includes a first drive assembly and a first support rod arranged along the left and right directions, the right end of the first support rod is provided with a first support frame for loading rock samples, and the first drive assembly can drive the first support frame to extend into or out of the first experimental container and the second experimental container.

[0015] In certain embodiments of the present application, a valve body is provided between the first experimental container and the second experimental container, the valve body includes an inner cavity connecting the first experimental container and the second experimental container, the valve body includes a sphere capable of closing the inner cavity, and the sphere is provided with a channel capable of connecting the first experimental container and the second experimental container.

[0016] In certain embodiments of the present application, the cooling system includes an immersion cooling device, which includes a cooling tank arranged at the bottom of the rack, a first opening is provided on the top of the cooling tank, and a second opening is provided on the rack corresponding to the first opening.

[0017] In certain embodiments of the present application, the sample loading system includes a second sample loading device slidably connected to the frame, the second sample loading device includes a second drive assembly and a second support rod, one end of the second support rod is fixedly connected to a gear, the other end of the second support rod is provided with a second support frame for loading rock samples, the second drive assembly is provided with a rack meshing with the gear, and the second drive assembly can drive the second support frame to extend into or out of the first experimental container.

[0018] In certain embodiments of the present application, the second driving assembly includes a lifting assembly slidably connected to the frame, a lifting platform is provided on the top of the lifting assembly, an electric push rod is provided on the lifting platform, the output end of the electric push rod is connected to the left end of the rack, and the lifting assembly can drive the second support frame to extend into the cooling tank.

[0019] In certain embodiments of the present application, the temperature gradient monitoring device includes a data acquisition instrument and multiple thermocouples. The rock sample is provided with multiple drill holes of different depths for inserting the thermocouples, and the multiple thermocouples are electrically connected to the data acquisition instrument.

[0020] The present application also provides a test method using the heat treatment experimental equipment in the above embodiment, comprising the following steps:

[0021] Connecting the temperature gradient monitoring device to the rock sample;

[0022] Mounting a rock sample on the sample loading system;

[0023] Placing the rock sample in the heating device;

[0024] After heating is completed, the sample loading system moves the rock sample from the heating device to the cooling system;

[0025] The experimental acquisition data is analyzed by the temperature gradient monitoring device.

[0026] One of the above technical solutions has at least one of the following advantages or beneficial effects: the temperature gradient monitoring device of the heat treatment experimental equipment can monitor the changes in the temperature gradient inside the rock sample during the thermal shock treatment process; the sample loading system is used to load the rock sample; the heating device can heat and insulate the rock sample; the sample loading system loaded with the rock sample drives the rock sample to extend from the first experimental container and into the cooling system, so that the heated and insulated rock sample can be rapidly cooled, thereby realizing thermal shock treatment of the material; the temperature sensor arranged inside the sample can monitor the changes in the temperature gradient inside the sample in real time; the heat treatment experimental equipment can realize thermal shock treatment of high-temperature rocks in different temperature fields by rapid cooling, and the temperature gradient changes inside the rock during the thermal shock process can be monitored in real time through the temperature gradient monitoring device.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 is a stereogram of an embodiment of a heat treatment experimental device in the present application;

[0030] Figure 2 is a structural schematic diagram of an embodiment of a first sample loading device in the present application;

[0031] Figure 3 is a structural schematic diagram of an embodiment of a second sample loading device in the present application;

[0032] Figure 4 is a structural schematic diagram of an embodiment of a heating device in the present application;

[0033] Figure 5 is a front view of an embodiment of a heat treatment experimental device in the present application;

[0034] Figure 6 It is a structural schematic diagram of an embodiment of a temperature gradient monitoring device in the present application. DETAILED DESCRIPTION

[0035] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0036] In the present application, if there is a description of directions (up, down, left, right, front and back), it is only for the convenience of describing the technical solution of the present application, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0037] In this application, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of this application, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In this application, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected, detachably connected, or integrally formed; they can be mechanically connected, electrically connected, or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in this application in combination with the specific content of the technical solution.

[0039] In the process of development and utilization of deep resources, high-temperature rock masses are not always at a relatively stable temperature, and sometimes they experience drastic changes in temperature. The thermal stress generated in the rock by this drastic temperature change will cause the initiation and development of thermal cracks, thereby affecting the physical and mechanical properties of the rock. This process is called thermal shock.

[0040] in, Figure 1 , Figure 2 , Figure 3 and Figure 5 The reference direction coordinate system of the embodiment of the present application is given, namely Figure 1 , Figure 2 , Figure 3 and Figure 5 Shows the left and right directions, the following combination Figure 1 , Figure 2 , Figure 3 and Figure 5 The embodiments of the present application are described with reference to the direction shown.

[0041] The embodiment of the present application provides a heat treatment experimental device, see Figures 1 to 6 , including a first experimental container 100, a heating device 200, a temperature gradient monitoring device 300, a sample loading system and a cooling system. The heating device 200 can heat the first experimental container 100; the temperature gradient monitoring device 300 is connected to the rock sample; the sample loading system can load the rock sample and can extend the rock sample into or out of the first experimental container 100; the sample loading system can extend the rock sample into the cooling system.

[0042] The temperature gradient monitoring device 300 of the heat treatment experimental equipment can monitor the changes in the temperature gradient inside the rock sample during the thermal shock treatment. The sample loading system is used to load the rock sample. The heating device 200 can heat and insulate the rock sample. The sample loading system loaded with the rock sample drives the rock sample to extend from the first experimental container 100 and into the cooling system, so that the heated and insulated rock sample can be rapidly cooled, thereby realizing thermal shock treatment of the material. The temperature sensor arranged inside the sample can monitor the changes in the temperature gradient inside the sample in real time. The heat treatment experimental equipment can realize thermal shock treatment of high-temperature rocks in different temperature fields by rapid cooling, and the temperature gradient monitoring device 300 can realize real-time monitoring of the changes in the temperature gradient inside the rock during the thermal shock process.

[0043] In some embodiments, the heating device 200 is an open heating furnace. The rock sample can be delivered into the heating furnace through the sample loading system on one side of the open heating furnace to achieve heating and insulation of the rock sample. The multiple iodine tungsten lamps in the open heating furnace are symmetrically distributed up and down to ensure that the rock sample in the first experimental container 100 is heated evenly. An operating screen is provided on the lower side of the open heating furnace. The heating or insulation temperature can be set through the operating screen, and the surface temperature of the material can be read at the same time.

[0044] In some embodiments, the heat treatment experimental equipment includes a frame 600 , and the sample loading system and the first experimental container 100 are sequentially arranged on the frame 600 along the left-right direction, and the sample loading system can move along the left-right direction relative to the frame 600 .

[0045] In some embodiments, the cooling system includes a spray cooling device 500, the spray cooling device 500 includes a second experimental container 510 installed on a rack 600, a plurality of nozzles are provided in the second experimental container 510, the spray cooling device 500 can use the coolant in the form of a spray to perform thermal shock treatment on the rock sample after heating and insulation, the spray cooling device 500 includes a spray cooling system 520 and a coolant recovery device 530, the spray cooling system 520 is connected to the nozzle to form a spray, and the coolant recovery device 530 is connected to the bottom of the second experimental container 510 to recover the liquid in the second experimental container 510.

[0046] In some embodiments, the sample loading system includes a first sample loading device 400 slidably connected to the frame 600, the first sample loading device 400 includes a first driving assembly 430 and a first support rod 410 arranged along the left and right directions, the right end of the first support rod 410 is provided with a first support frame 420 for loading rock samples, the first driving assembly 430 can drive the first support frame 420 to extend into or out of the first experimental container 100 and the second experimental container 510, specifically, the first support frame 420 is a quartz support, the bottom of the first support frame 420 is hollow and covered with sharp protrusions, while being able to place the rock sample, the contact area between the sample and the quartz support can be reduced, so that the rock sample is heated or cooled evenly to the maximum extent, the first sample loading device 400 includes a detachable flange integrated part 440 arranged on the first support frame 420, the detachable flange The integrated part 440 is connected to the left flange of the first experimental container 100 by bolts around the flange to seal the left side of the first experimental container 100. A circular hole is opened in the middle of the detachable flange integrated part 440 as a wiring harness hole, and the data wiring harness of the temperature gradient monitoring device 300 passes through the wiring harness hole. A circular hole is opened at the bottom of the detachable flange integrated part 440 as a sliding hole. An air outlet valve is provided on the detachable flange integrated part 440, and the air outlet valve is connected to the first experimental container 100. A mechanical pressure gauge is provided at the air outlet to detect the pressure in the first experimental container 100. The first support rod 410 (i.e., a quartz rod with a hole) can slide through the circular hole. Both holes are sealed with a sealing ring. A thermocouple hole for the thermocouple 320 to pass through is opened at the bottom of the quartz rod with a hole. The thermocouple 320 passes through the thermocouple hole of the quartz rod with a hole and contacts the rock sample through the quartz bracket to detect the temperature of the rock sample.

[0047] The first quartz baffle 450 is provided on the left and right sides of the first support frame 420 to block heat conduction. The first support rod 410 (i.e., the quartz rod with a hole) is fixedly connected to the first support frame 420 (i.e., the quartz bracket) and the first quartz baffle 450 as a whole. The first driving assembly 430 is a stepper motor, which provides power for the axial movement of the first support rod 410 (the quartz rod with a hole). The frame 600 is provided with a slide rail 620 that cooperates with the bottom of the first sample loading device 400. The slide rail 620 can make the first sample loading device 400 move axially as a whole. A ball screw is arranged in the first sample loading device 400. The left end of the first support rod 410 is provided with a slide seat that cooperates with the screw. The ball screw converts the rotational motion of the stepper motor into linear motion, thereby realizing the axial movement of the first support rod 410 in the first experimental container 100.

[0048] In some embodiments, a valve body 800 is provided between the first experimental container 100 and the second experimental container 510. The valve body 800 includes an inner cavity 810 connecting the first experimental container 100 and the second experimental container 510. The valve body 800 includes a sphere 820 capable of closing the inner cavity 810. The sphere 820 is provided with a channel 821 capable of connecting the first experimental container 100 and the second experimental container 510. The valve body 800 is made of stainless steel and can withstand high pressure and corrosive environments. The sphere 820 can rotate 90 degrees to open or close the channel 821 by rotation, thereby controlling the flow of fluid. The electric actuator is connected to the sphere 820 through a valve stem. When the electric actuator is operating, the valve stem transmits power to rotate the sphere 820. The electric actuator is used to provide power to open or close the channel 821, and can automatically adjust the valve body 800 according to the received signal to achieve remote and automatic control.

[0049] The first experimental container 100 and the second experimental container 510 both include quartz tubes for sealing rock samples, and the valve body 800 is an electric valve for opening the heated and heat-insulated quartz tubes.

[0050] In some embodiments, the cooling system includes an immersion cooling device 900, which includes a cooling tank disposed at the bottom of a rack 600, a first opening being disposed on the top of the cooling tank, and a second opening 610 corresponding to the first opening being disposed on the rack 600. The cooling tank is provided with a coolant, which can perform liquid cooling on the rock sample after heating and insulation, thereby achieving thermal shock treatment. Specifically, the cooling tank is located between the second sample loading device 700 and the first experimental container 100.

[0051] In some embodiments, the sample loading system includes a second sample loading device 700 slidably connected to the frame, the second sample loading device 700 includes a second driving assembly 710 and a second support rod 720, one end of the second support rod 720 is fixedly connected to a gear 730, the other end of the second support rod 720 is provided with a second support frame 770 for loading the rock sample, the second driving assembly 710 is provided with a rack 740 meshing with the gear 730, the second driving assembly 710 can drive the second support frame 770 to extend into or out of the first experimental container 100, the second sample loading device 700 includes a second quartz baffle 750 arranged on the second support rod 720, the second quartz baffle 750 can prevent the rock sample from being in the experimental container while blocking heat conduction. During the test, the second support frame 770 falls out, and the second support rod 720 is slidably connected with a heat preservation cover 760. The heat preservation cover 760 can block heat conduction and wrap the rock sample together with the second quartz baffle 750 in the subsequent experiment, so as to achieve the heat preservation effect of the rock sample and reduce heat loss. The second support rod 720 is provided with a tubular furnace plug 780. The tubular furnace plug 780 is a porous high-temperature resistant material specially used to isolate the heating zone and the non-heating zone in the tubular furnace. The tubular furnace plug 780 is provided with an opening for passing through the K-type armored thermocouple harness, the electric push rod 713 and the restraining chain 714; the gear 730 can realize the specific angle rotation of the second support rod 720 (quartz rod with holes) and other components thereon under the action of the motor.

[0052] In some embodiments, the second driving assembly 710 includes a lifting assembly 711 slidably connected to the frame 600, a lifting platform 712 is provided on the top of the lifting assembly 711, and an electric push rod 713 is provided on the lifting platform 712. The output end of the electric push rod 713 is connected to the left end of the rack 740. The electric push rod 713 can also pass through the rack 740 through the tubular furnace plug 780 to push the heat preservation cover 760 so that it and the second quartz baffle 750 cover the rock sample; the restraining iron chain 714 is set on the outer shell of the second sample loading device 700, about The bundled iron chain 714 is connected to the heat-insulating cover 760. When the heat-insulating cover 760 is about to contact the coolant, the heat-insulating cover 760 is pulled to prevent the heat-insulating cover 760 from being immersed in the coolant. The lifting assembly 711 can drive the second support frame 770 to extend into the cooling tank to cool the rock sample. The lifting assembly 711 is a small hydraulic lifting system, which is used to immerse the heated, insulated and rotated rock sample into the coolant in the immersion cooling tank. The bottom of the second sample loading device 700 cooperates with the platform slide rail 620 to enable the second sample loading device 700 to move axially as a whole.

[0053] In some embodiments, the temperature gradient monitoring device 300 includes a data acquisition instrument 310 and multiple thermocouples 320. The rock sample is provided with multiple drill holes of different depths for inserting the thermocouples 320. The multiple thermocouples 320 are electrically connected to the data acquisition instrument 310. Specifically, the thermocouple 320 is a K-type armored thermocouple. The temperature gradient monitoring device 300 also includes a digital converter 330. The K-type armored thermocouple is inserted into the prepared rock sample at different depths. After adding an adhesive to fix it, the temperature gradient change inside the rock sample can be monitored in real time; the data acquisition instrument 310 is connected to the K-type armored thermocouple through a data harness to receive probe monitoring data; the digital converter 330 is connected to the data acquisition instrument 310 and a personal computer, and can decode and convert the collected data into professional software in the personal computer.

[0054] A test method using the heat treatment experimental equipment in the above embodiment comprises the following steps:

[0055] 1. Prepare coolant;

[0056] 2. Prepare rock samples, drill holes of different depths in the rock samples, connect the temperature gradient monitoring device 300 to the rock samples, that is, insert the thermocouple 320 deep into the drill holes, add adhesive to fix the thermocouple 320;

[0057] 3. Install the rock sample on the sample loading system;

[0058] Specifically: if spray cooling is used, the first sample loading device 400 needs to be loaded on the rack 600, the rock sample needs to be loaded on the first sample loading device 400, and the rock sample needs to be placed in the first experimental container 100. The heating device 200 heats the first experimental container 100. After the heating is completed, the valve body 800 is opened, and the first sample loading device 400 drives the rock sample to move to the right, so that the rock sample moves from the first experimental container 100 to the second experimental container 510, and the spray cooling system 520 and the nozzle are started to perform thermal shock treatment on the rock sample. Finally, the experimental collection data is analyzed through the temperature gradient monitoring device 300.

[0059] If immersion cooling is used, the second sample loading device 700 needs to be loaded on the rack 600, the rock sample is loaded on the second sample loading device 700, and the rock sample is placed in the first experimental container 100. The heating device 200 heats the first experimental container 100. After heating is completed, the electric push rod 713 pushes the thermal insulation cover 760 to cover the rock sample through the right end of the rack 740. The second sample loading device 700 drives the rock sample to move to the left, and the control gear 730 rotates to make the second support rod 720 drive the rock sample to rotate. The lifting assembly 711 drives the lifting platform 712 to descend, and the rock sample is vertically immersed in the coolant in the cooling tank through the second opening 610. The rock sample is subjected to thermal shock treatment, and finally the experimental collection data is analyzed through the temperature gradient monitoring device 300.

[0060] This heat treatment test method can use spray cooling and immersion cooling to perform thermal shock treatment on rock samples. By setting different heating temperatures and cooling liquids, the distribution law and change characteristics of the internal temperature field and temperature gradient of the rock samples during thermal shock treatment under different conditions can be explored.

[0061] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present application, and these equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A heat treatment experimental equipment, characterized in that, include A first experimental container; a heating device capable of heating the first experimental container; A temperature gradient monitoring device, wherein the temperature gradient monitoring device is connected to the rock sample; A sample loading system, the sample loading system is capable of loading rock samples and extending the rock samples into or out of the first experimental container; A cooling system, wherein the sample loading system is capable of extending the rock sample into the cooling system.

2. The heat treatment experimental equipment according to claim 1, characterized in that: It comprises a frame, the sample loading system and the first experimental container are arranged on the frame in sequence along the left-right direction, and the sample loading system can move relative to the frame along the left-right direction.

3. The heat treatment experimental equipment according to claim 2, characterized in that: The cooling system comprises a spray cooling device, and the spray cooling device comprises a second experimental container installed on the rack, and a plurality of spray heads are arranged in the second experimental container.

4. The heat treatment experimental equipment according to claim 3, characterized in that: The sample loading system includes a first sample loading device slidably connected to the frame, the first sample loading device includes a first driving assembly and a first support rod arranged along the left and right directions, the right end of the first support rod is provided with a first support frame for loading rock samples, and the first driving assembly can drive the first support frame to extend into or out of the first experimental container and the second experimental container.

5. The heat treatment experimental equipment according to claim 4, characterized in that: A valve body is provided between the first experimental container and the second experimental container, the valve body includes an inner cavity connecting the first experimental container and the second experimental container, the valve body includes a sphere capable of closing the inner cavity, and the sphere is provided with a channel capable of connecting the first experimental container and the second experimental container.

6. The heat treatment experimental equipment according to claim 2, characterized in that: The cooling system comprises an immersion cooling device, which comprises a cooling tank arranged at the bottom of the frame, a first opening is arranged at the top of the cooling tank, and a second opening corresponding to the first opening is arranged on the frame.

7. The heat treatment experimental equipment according to claim 6, characterized in that: The sample loading system includes a second sample loading device slidably connected to the frame, the second sample loading device includes a second driving assembly and a second support rod, one end of the second support rod is fixedly connected to a gear, the other end of the second support rod is provided with a second support frame for loading rock samples, the second driving assembly is provided with a rack meshing with the gear, and the second driving assembly can drive the second support frame to extend into or out of the first experimental container.

8. The heat treatment experimental equipment according to claim 7, characterized in that: The second driving assembly includes a lifting assembly slidably connected to the frame, a lifting platform is provided on the top of the lifting assembly, an electric push rod is provided on the lifting platform, the output end of the electric push rod is connected to the left end of the rack, and the lifting assembly can drive the second support frame to extend into the cooling tank.

9. The heat treatment experimental equipment according to claim 1, characterized in that: The temperature gradient monitoring device comprises a data acquisition instrument and a plurality of thermocouples. The rock sample is provided with a plurality of boreholes of different depths for inserting the thermocouples. The plurality of thermocouples are electrically connected to the data acquisition instrument.

10. A test method using the heat treatment test equipment according to any one of claims 1 to 9, characterized in that: The steps include: Connecting the temperature gradient monitoring device to the rock sample; Mounting a rock sample on the sample loading system; Placing the rock sample in the first experimental container, and heating the first experimental container by the heating device; After heating is completed, the sample loading system moves the rock sample from the first experimental container to the cooling system; The experimental acquisition data is analyzed by the temperature gradient monitoring device.

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