Disclosure of Invention
The application aims to at least solve one of the technical problems in the prior art, and provides a heat treatment experimental device and a test method, wherein the heat treatment experimental device can conveniently and rapidly perform heat shock treatment on a rock sample and monitor the temperature gradient change in the rock in real time, and the test method using the heat treatment experimental device is fast in operation and accurate in experiment.
The technical scheme adopted for solving the technical problems is as follows:
a heat treatment experimental facility comprises
Connecting the temperature gradient monitoring device with a rock sample;
Mounting a rock sample on the sample loading system;
Placing a 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 experiment container into the cooling system;
And analyzing the experimental acquisition data by the temperature gradient monitoring device.
In some embodiments of the present application, the apparatus comprises a rack, wherein the sample loading system and the first experiment container are sequentially arranged on the rack along the left-right direction, and the sample loading system can move along the left-right direction relative to the rack.
In certain embodiments of the application, the cooling system comprises a spray cooling device comprising a second experimental vessel mounted on the rack, the second experimental vessel having a plurality of spray heads disposed therein.
In some embodiments of the present application, the sample loading system comprises a first sample loading device slidingly connected to the frame, the first sample loading device comprises a first driving component and a first supporting rod arranged along the left-right direction, the right end of the first supporting rod is provided with a first supporting frame for loading a rock sample, and the first driving component can drive the first supporting frame to extend into or extend out of the first experimental container and the second experimental container.
In some embodiments of the present application, a valve body is disposed between the first experiment container and the second experiment container, the valve body includes an inner cavity that communicates with the first experiment container and the second experiment container, the valve body includes a sphere that can close the inner cavity, and a channel that can communicate with the first experiment container and the second experiment container is disposed on the sphere.
In some embodiments of the present application, the cooling system includes an immersion cooling device, the immersion cooling device includes a cooling tank disposed at a bottom of the rack, a first opening is disposed at a top of the cooling tank, and a second opening disposed corresponding to the first opening is disposed on the rack.
In some embodiments of the application, the sample loading system comprises a second sample loading device which is connected on the rack in a sliding manner, the second sample loading device comprises a second driving component and a second supporting rod, one end of the second supporting rod is fixedly connected with a gear, the other end of the second supporting rod is provided with a second supporting frame for loading a rock sample, the second driving component is provided with a rack meshed with the gear, and the second driving component can drive the second supporting frame to extend into or extend out of the first experimental container.
In some embodiments of the present application, the second driving assembly includes a lifting assembly slidably connected to the frame, a lifting platform is disposed at a top of the lifting assembly, an electric push rod is disposed on the lifting platform, an output end of the electric push rod is connected to a left end of the rack, and the lifting assembly can drive the second support frame to stretch into the cooling tank.
In some embodiments of the application, the temperature gradient monitoring device comprises a data acquisition instrument and a plurality of thermocouples, wherein a rock sample is provided with a plurality of drill holes with different depths for inserting the thermocouples, and the thermocouples are electrically connected with the data acquisition instrument.
The application also provides a test method using the heat treatment test equipment in the embodiment, which comprises the following steps:
Connecting the temperature gradient monitoring device with a rock sample;
Mounting a rock sample on the sample loading system;
placing a rock sample in the heating device;
After heating is completed, the sample loading system moves the rock sample from the heating device into the cooling system;
And analyzing the experimental acquisition data by the temperature gradient monitoring device.
The temperature gradient monitoring device of the heat treatment experimental equipment can monitor the temperature gradient change of the rock sample in the heat shock treatment process, the sample loading system is used for loading the rock sample, the heating device can heat and preserve heat of the rock sample, the sample loading system for loading the rock sample drives the rock sample to extend out of the first experimental container and extend into the cooling system, so that the heated and preserved rock sample can be subjected to quenching operation, the thermal shock treatment of materials is realized, the temperature gradient change of the sample can be monitored in real time through the temperature sensor arranged in the sample, the heat treatment experimental equipment can realize the thermal shock treatment of high-temperature rocks in different temperature fields in a rapid cooling mode, and the real-time monitoring of the temperature gradient change of the rock in the thermal shock process is realized through the temperature gradient monitoring device.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Detailed Description
Reference will now be made in detail to the present embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present application, but not to limit the scope of the present application.
In the present application, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present application, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number, and "above", "below", "within", etc. are understood to include the present number. In the description of the present application, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present application, unless explicitly defined otherwise, terms such as "providing," "mounting," "connecting," and the like should be construed broadly, and may, for example, be directly connected or indirectly connected through an intermediate medium, or may be fixedly connected or may be detachably connected or may be integrally formed, or may be mechanically connected or may be electrically connected or may be capable of communicating with each other, or may be internal to two elements or may be in interaction with each other. The specific meaning of the words in the application can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
In the development and utilization process of deep resources, the high Wen Yanti is not always at a relatively stable temperature, and sometimes the rapid temperature change is experienced, and the thermal stress generated by the rapid temperature change in the rock can cause the initiation and development of thermal cracks, thereby affecting the physical and mechanical properties of the rock, namely the thermal shock phenomenon.
In which fig. 1, fig. 2, fig. 3 and fig. 5 show reference direction coordinate systems of embodiments of the present application, that is, fig. 1, fig. 2, fig. 3 and fig. 5 show left and right directions, and embodiments of the present application are described below with reference to the directions shown in fig. 1, fig. 2, fig. 3 and fig. 5.
Embodiments of the present application provide a thermal treatment experiment apparatus, referring to fig. 1 to 6, comprising a first experiment container 100, a heating device 200, a temperature gradient monitoring device 300, a sample loading system, and a cooling system, wherein the heating device 200 is capable of heating the first experiment container 100, the temperature gradient monitoring device 300 is connected to a rock sample, the sample loading system is capable of loading the rock sample and extending the rock sample into or out of the first experiment container 100, and the sample loading system is capable of extending the rock sample into the cooling system.
The temperature gradient monitoring device 300 of the heat treatment experimental facility can monitor the temperature gradient change of the rock sample in the process of heat shock treatment, the sample loading system is used for loading the rock sample, the heating device 200 can heat and preserve heat of the rock sample, the sample loading system for loading the rock sample drives the rock sample to extend out of the first experimental container 100 and extend into the cooling system, so that the heated and preserved rock sample can be subjected to quenching operation, the thermal shock treatment of materials is realized, the temperature gradient change of the sample can be monitored in real time through the temperature sensor arranged in the sample, the heat treatment experimental facility can realize the thermal shock treatment of high-temperature rocks in different temperature fields in a rapid cooling mode, and the real-time monitoring of the temperature gradient change of the rock in the thermal shock process is realized through the temperature gradient monitoring device 300.
In some embodiments, the heating device 200 is an open-type heating furnace, the rock sample can be fed into the heating furnace through a sample loading system at one side of the open-type heating furnace, heating and heat preservation of the rock sample are achieved, a plurality of iodine tungsten lamp tubes in the open-type heating furnace are symmetrically distributed up and down, the rock sample in the first experiment container 100 is guaranteed to be heated uniformly, an operation screen is arranged at the lower side of the open-type heating furnace, heating or heat preservation temperature can be set through the operation screen, and meanwhile, the surface temperature of materials can be read.
In some embodiments, the thermal processing testing apparatus comprises a rack 600, and the sample loading system and the first test container 100 are sequentially disposed on the rack 600 in a left-right direction, and the sample loading system is capable of moving in the left-right direction with respect to the rack 600.
In some embodiments, the cooling system comprises a spray cooling device 500, the spray cooling device 500 comprises a second experiment container 510 installed on the rack 600, a plurality of spray heads are arranged in the second experiment container 510, the spray cooling device 500 can perform thermal shock treatment on the heated and insulated rock sample by using cooling liquid in a spray mode, the spray cooling device 500 comprises a spray cooling system 520 and a cooling liquid recovery device 530, the spray cooling system 520 is connected with the spray heads to form spray, and the cooling liquid recovery device 530 is connected with the bottom of the second experiment container 510 to recover liquid in the second experiment container 510.
In some embodiments, the sample loading system comprises a first sample loading device 400 slidably connected to a rack 600, the first sample loading device 400 comprises a first driving component 430 and a first supporting rod 410 arranged along the left-right direction, the right end of the first supporting rod 410 is provided with a first supporting frame 420 for loading rock samples, the first driving component 430 can drive the first supporting frame 420 to extend into or extend out of a first experimental container 100 and a second experimental container 510, in particular, the first supporting frame 420 is a quartz bracket, the bottom of the first supporting frame 420 is hollowed out and is fully provided with sharp protrusions, the contact area between the sample and the quartz bracket can be reduced while the rock samples can be placed, the rock samples are heated or cooled uniformly to the greatest extent, the first sample loading device 400 comprises a detachable flange integrated piece 440 arranged on the first supporting frame 420, the detachable flange integrated part 440 is connected with the left flange of the first experiment container 100 through bolts around the flange, the left side of the first experiment container 100 is sealed, a round hole is formed in the middle of the detachable flange integrated part 440 and is used as a wire bundle hole, a data wire bundle of the temperature gradient monitoring device 300 passes through the wire bundle hole, a round hole is formed in the bottom of the detachable flange integrated part 440 and is used as a sliding hole, an air outlet valve is arranged on the detachable flange integrated part 440 and is communicated with the first experiment container 100, a mechanical pressure gauge is arranged at the air outlet for detecting the pressure in the first experiment container 100, a first support rod 410 (namely a holed quartz rod) can pass through the round hole in a sliding manner, the two holes are sealed by sealing rings, a thermocouple hole through which a heating thermocouple 320 passes is formed in the bottom of the holed quartz rod, the thermocouple 320 passes through the thermocouple hole of the holed quartz rod and contacts with a rock sample through a quartz bracket, for detecting the temperature of a rock sample.
The left side and the right side of the first support frame 420 are respectively provided with a first quartz baffle 450, which plays a role of blocking heat conduction, the first support rod 410 (i.e. a quartz rod with holes) is fixedly connected with the first support frame 420 (i.e. a quartz support frame) and the first quartz baffle 450 into a whole, the first driving component 430 is a stepping motor, the stepping motor provides power for the axial movement of the first support rod 410 (the quartz rod with holes), the rack 600 is provided with a sliding rail 620 matched with the bottom of the first sample loading device 400, the sliding rail 620 can enable the whole first sample loading device 400 to axially move, 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 sliding seat matched with the screw, and the ball screw converts the rotary movement of the stepping motor into linear movement, so that the axial movement of the first support rod 410 in the first experimental container 100 is realized.
In some embodiments, a valve body 800 is arranged between the first experimental container 100 and the second experimental container 510, the valve body 800 comprises an inner cavity 810 which is communicated with the first experimental container 100 and the second experimental container 510, the valve body 800 comprises a sphere 820 which can close the inner cavity 810, a channel 821 which can be communicated with the first experimental container 100 and the second experimental container 510 is arranged on the sphere 820, the valve body 800 is made of stainless steel and can bear high pressure and corrosion environment, the sphere 820 can rotate by 90 degrees, the channel 821 is opened or closed through rotation, so that fluid flow is controlled, an electric actuator is connected with the sphere 820 through a valve rod, when the electric actuator operates, the valve rod transmits power to enable the sphere 820 to rotate, the electric actuator is used for providing power to open or close the channel 821, and the valve body 800 can be automatically adjusted according to received signals, so that remote and automatic control is realized.
The first experimental container 100 and the second experimental container 510 both comprise quartz tubes, so that rock samples can be conveniently sealed, and the valve body 800 is an electric valve for opening the quartz tubes after heating and heat preservation.
In some embodiments, the cooling system comprises a submerged cooling device 900, the cooling device 900 comprises a cooling tank arranged at the bottom of the rack 600, a first opening is arranged at the top of the cooling tank, a second opening 610 corresponding to the first opening is arranged on the rack 600, cooling liquid is arranged in the cooling tank, and the cooling tank can perform liquid cooling on the heated and insulated rock sample, so that thermal shock treatment is realized, and in particular, the cooling tank is positioned between the second sample loading device 700 and the first experimental container 100.
In some embodiments, the sample loading system comprises a second sample loading device 700 slidably connected to the rack, the second sample loading device 700 comprises a second driving component 710 and a second supporting rod 720, one end of the second supporting rod 720 is fixedly connected with a gear 730, the other end of the second supporting rod 720 is provided with a second supporting frame 770 for loading rock samples, the second driving component 710 is provided with a rack 740 meshed with the gear 730, the second driving component 710 can drive the second supporting frame 770 to extend into or extend out of the first experimental container 100, the second sample loading device 700 comprises a second quartz baffle 750 arranged on the second supporting rod 720, the second quartz baffle 750 can prevent the rock samples from falling out of the second supporting frame 770 in the experimental process while blocking heat conduction, the second supporting rod 720 is slidably connected with a heat preservation cover 760, the heat preservation cover 760 can jointly wrap the rock samples with the second quartz baffle 750 in the subsequent experimental process while blocking heat conduction, thereby achieving the heat preservation effect on the rock samples, the reduction of heat loss, the second supporting rod 720 is provided with a tubular furnace plug 780, the tubular furnace plug 780 is made of a porous heat-resistant material, the tubular furnace plug is a special-insulating tubular furnace plug, the tubular furnace plug is used for heating wire bundles can be sheathed on the wire bundle and the wire bundle is provided with a special heating zone 714, the tubular furnace plug is sheathed on the electric heating zone 714 and the tubular plug is provided with other wire bundle can be sheathed with a special heating zone or other wire bundle can be sheathed with a wire rod or a special wire bundle or a wire bundle can and can be sheathed with a wire rod.
In some embodiments, the second driving assembly 710 includes a lifting assembly 711 slidably connected to the frame 600, a lifting platform 712 is disposed on top of the lifting assembly 711, a power push rod 713 is disposed on the lifting platform 712, an output end of the power push rod 713 is connected to a left end of the rack 740, the power push rod 713 can push the heat preservation cover 760 through the rack 740 and the pipe furnace plug 780 to cover the rock sample with the second quartz baffle 750, a restraint iron chain 714 is disposed on a housing of the second sample loading device 700, the restraint iron chain 714 is connected to the heat preservation cover 760, the heat preservation cover 760 is pulled to avoid the heat preservation cover 760 from being immersed in the cooling liquid when the heat preservation cover 760 is about to be contacted with the cooling liquid, 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 for immersing the heated and insulated rock sample into the cooling liquid immersed in the cooling tank, and the bottom of the second sample loading device 700 is matched with the platform slide rail 620 to enable the whole second sample loading device 700 to move axially.
In some embodiments, the temperature gradient monitoring device 300 comprises a data acquisition instrument 310 and a plurality of thermocouples 320, wherein a plurality of drill holes with different depths for inserting the thermocouples 320 are formed in the rock sample, the thermocouples 320 are electrically connected with the data acquisition instrument 310, the thermocouples 320 are specifically K-type armored thermocouples, the temperature gradient monitoring device 300 further comprises a digital converter 330, the K-type armored thermocouples are placed into the prepared rock sample at different depths, after the adhesive is added and fixed, the temperature gradient change inside the rock sample can be monitored in real time, the data acquisition instrument 310 is connected with the K-type armored thermocouples through a data wire harness to receive probe monitoring data, and the digital converter 330 is connected with the data acquisition instrument 310 and a personal computer to decode and convert the acquired data into professional software in the personal computer.
A test method using the heat treatment test apparatus of the above embodiment, comprising the steps of:
1. Preparing a cooling liquid;
2. Preparing a rock sample, driving drill holes with different depths into the rock sample, connecting the temperature gradient monitoring device 300 with the rock sample, namely, deeply drilling the thermocouple 320, adding an adhesive, standing and fixing the thermocouple 320;
3. mounting a rock sample on a sample loading system;
Specifically, if spray cooling is used, the first sample loading device 400 is required to be loaded on the rack 600, the rock sample is loaded on the first sample loading device 400, the rock sample is placed in the first experiment container 100, the heating device 200 heats the first experiment container 100, after heating, the valve body 800 is opened, the first sample loading device 400 drives the rock sample to move rightwards, the rock sample is moved from the first experiment container 100 to the second experiment container 510, the spray cooling system 520 and the spray head are started, the rock sample is subjected to thermal shock treatment, and finally the temperature gradient monitoring device 300 is used for analyzing and collecting experimental data.
If immersion cooling is used, the second sample loading device 700 is required to be loaded on the rack 600, the rock sample is loaded on the second sample loading device 700, the rock sample is placed in the first experiment container 100, the heating device 200 heats the first experiment container 100, after heating is completed, the electric push rod 713 pushes the heat 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 leftwards, the control gear 730 rotates to enable the second support rod 720 to drive the rock sample to rotate, the lifting platform 712 is driven by the lifting assembly 711 to descend, the rock sample is vertically immersed into the cooling liquid in the cooling tank through the second opening 610, thermal shock treatment is performed on the rock sample, and finally experimental acquisition data is analyzed through the temperature gradient monitoring device 300.
According to the heat treatment test method, the rock sample can be subjected to heat shock treatment by using two modes of spray cooling and immersion cooling, and the distribution rule and change characteristics of an internal temperature field and a temperature gradient of the rock sample in the heat shock treatment process under different conditions are ascertained by setting different heating temperatures and cooling liquids.
In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present application is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the application, and these equivalent modifications or substitutions are intended to be included in the scope of the present application as defined in the appended claims.