An ultrahigh temperature rock heating device in a high confining pressure environment

Abstract

The utility model relates to mechanical engineering field discloses a kind of superhigh temperature rock heating devices in high confining pressure environment, including box, heating bin is opened in the inside top end of the box, combustion bin is opened in the inside center of the box, the inside rotating joint of the heating bin has a plurality of first roller, first guide rail is opened in the inside wall of the heating bin both sides, first loading disc is slidably connected in the first guide rail inner wall, the inside top wall of the box is fixedly connected with temperature sensor.In the utility model, by setting loading disc directly bearing rock sample, while in each warehouse body is matched with roller to reduce the frictional resistance when loading disc moves, and with guide rail as loading disc sliding provides stable orientation, without using fixture in actual operation, just by pushing and pulling loading disc can complete sample's taking and placing, both simplify feeding and discharging process, also avoid the damage that fixture contact sample can cause.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering, and in particular to an ultra-high temperature rock heating device in a high confining pressure environment. Background Technology

[0002] It is mainly used to simulate high-pressure and medium-high temperature environments in scenarios such as shallow natural gas development and high-pressure gas energy storage, and to study the changes in permeability and mechanical strength of rocks under these conditions. It has practical applications in oil and gas exploration, new energy storage, and geological engineering. Its core function is to create experimental conditions for rock samples that combine high pressure and medium-high temperature of 300-400 degrees Celsius, and to restore the service state of rocks in actual engineering.

[0003] These devices typically consist of a pressure chamber, a medium-temperature heating component, a gas leak-proof sealing structure, and a control unit for regulating temperature and pressure. Through the coordinated operation of these components, a stable high-pressure environment can be maintained to prevent gas leakage, while simultaneously heating rock samples to the target medium temperature. This allows for precise simulation of the real-world state of rocks under high-pressure engineering conditions, providing experimental support for optimizing oil and gas extraction schemes and assessing the safety of energy storage reservoirs. Currently available high-temperature rock heating devices are inconvenient to load and unload during use, requiring the use of clamps. Furthermore, if the heated rock is removed quickly, the large temperature difference can damage the internal structure of the rock. Therefore, an ultra-high temperature rock heating device for high confining pressure environments is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an ultra-high temperature rock heating device in a high confining pressure environment, which aims to improve the problems of inconvenient loading and unloading and easy damage to the internal structure of the rock.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ultra-high temperature rock heating device in a high confining pressure environment, comprising a box body, a heating chamber at the top of the box body, a combustion chamber at the center of the box body, a plurality of first rollers rotatably connected inside the heating chamber, first guide rails on both sides of the inner wall of the heating chamber, a first loading plate slidably connected to the inner wall of the first guide rails, a temperature sensor fixedly connected to the top wall of the box body, a pressure booster fixedly connected to the inner wall of the box body, a plurality of second rollers rotatably connected to the bottom wall of the combustion chamber, a fuel tank slidably connected to the inner wall of the combustion chamber, and a plurality of heat conduction grooves on the top wall of the combustion chamber.

[0006] As a further description of the above technical solution: The lower part of the box is provided with an insulated compartment. Several third rollers are rotatably connected inside the insulated compartment. Second guide rails are provided on both inner walls of the insulated compartment. Several fourth rollers are rotatably connected inside the insulated compartment. Third guide rails are provided on both inner walls of the insulated compartment. A second loading plate is slidably connected to the inner wall of the second guide rail. A third loading plate is slidably connected to the inner wall of the third guide rail.

[0007] As a further description of the above technical solution: A control panel is fixedly connected to the outer wall of the housing. The outer wall of the housing is provided with a first button for increasing the internal pressure of the device and a second button for decreasing the internal pressure of the device.

[0008] As a further description of the above technical solution: Valves are fixedly connected to the outer wall of the box.

[0009] As a further description of the above technical solution: The bottom wall of the first loading disc abuts against the outer wall of the first roller, the bottom wall of the second loading disc abuts against the outer wall of the third roller, and the bottom wall of the third loading disc abuts against the outer wall of the fourth roller.

[0010] As a further description of the above technical solution: The box is rotatably connected to a first compartment door, a second compartment door, and a third compartment door.

[0011] As a further description of the above technical solution: The first compartment door is adapted to the heating compartment, the second compartment door is adapted to the combustion compartment, and the third compartment door is adapted to the insulation compartment.

[0012] This utility model has the following beneficial effects: 1. In this utility model, a loading tray is set to directly support the rock sample. At the same time, rollers are equipped in each compartment to reduce the frictional resistance when the loading tray moves, and guide rails provide stable guidance for the sliding of the loading tray. In actual operation, no clamps are needed. The sample can be picked up and put down simply by pushing and pulling the loading tray. This simplifies the loading and unloading process, reduces the difficulty of operation, and avoids the damage that may be caused by clamps contacting the sample, effectively improving the convenience and efficiency of experimental operation.

[0013] 2. In this utility model, by setting up a special heat preservation chamber, after the rock sample is heated, it can be transferred to the loading tray inside the heat preservation chamber. The heat preservation chamber isolates the sample from the external environment and maintains the sample temperature, avoiding the sample being directly exposed to the room temperature environment and causing drastic temperature differences. This effectively protects the integrity of the internal structure of the rock and ensures the accuracy of subsequent test results on the rock characteristics. At the same time, the setting of the heat preservation chamber also provides the experimenters with sufficient time for subsequent sample processing, further improving the flexibility and reliability of the experimental operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of an ultra-high temperature rock heating device in a high confining pressure environment proposed in this utility model. Figure 2 This is a schematic diagram of the pressurizer of an ultra-high temperature rock heating device in a high confining pressure environment proposed in this utility model; Figure 3 This is a schematic diagram of the valve structure of an ultra-high temperature rock heating device in a high confining pressure environment proposed in this utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the structure of the first loading plate of an ultra-high temperature rock heating device in a high confining pressure environment proposed in this utility model. Figure 6 This is a schematic diagram of the heat conduction groove of an ultra-high temperature rock heating device in a high confining pressure environment proposed in this utility model.

[0015] Legend: 1. Housing; 2. Combustion chamber; 3. Heating chamber; 4. Insulation chamber; 5. First roller; 6. First guide rail; 7. First loading tray; 8. Temperature sensor; 9. Pressure booster; 10. Valve; 11. Second roller; 12. Fuel tank; 13. Third roller; 14. Second guide rail; 15. Second loading tray; 16. Fourth roller; 17. Third guide rail; 18. Third loading tray; 19. Heat conduction groove; 20. Control panel; 21. First button; 22. Second button; 23. First compartment door; 24. Second compartment door; 25. Third compartment door. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figure 3 , Figure 4 and Figure 6 This utility model provides an embodiment of an ultra-high temperature rock heating device in a high confining pressure environment, comprising a housing 1, which provides the installation foundation and protective space for all internal functional components and chambers; a heating chamber 3 is provided at the top of the housing 1, which is the core area specifically used for ultra-high temperature heating of rock samples and directly bears the core function of rock heating; a combustion chamber 2 is provided at the center of the housing 1, which is mainly used to place fuel and generate heat through fuel combustion, providing continuous energy support for the high temperature environment of the heating chamber 3; several first rollers 5 are rotatably connected inside the heating chamber 3, and the first rollers 5 can reduce the contact friction between the first loading plate 7 and the bottom wall of the heating chamber 3 by rotating themselves, facilitating the entry and exit of the first loading plate 7 into and out of the heating chamber 3; first guide rails 6 are provided on both inner walls of the heating chamber 3, which provide a fixed guiding path for the sliding of the first loading plate 7, preventing the first loading plate 7 from deviating or getting stuck during movement; the first loading plate 7 is slidably connected to the inner wall of the first guide rail 6, and the first loading plate 7 is used to directly bear the heat. The rock sample to be heated can be easily placed and removed by sliding on the first guide rail 6. A temperature sensor 8 is fixedly connected to the top wall inside the chamber 1. The temperature sensor 8 can monitor the temperature changes inside the chamber 1, especially the heating chamber 3, in real time, providing accurate data reference for subsequent temperature control. A pressurizer 9 is fixedly connected to the inner wall of the chamber 1. The pressurizer 9 can inject a pressure medium into the chamber 1 to create the high confining pressure environment required for the experiment. Several second rollers 11 are rotatably connected to the bottom wall inside the combustion chamber 2. The second rollers 11 can reduce the friction between the fuel tank 12 and the bottom wall of the combustion chamber 2, making it easy to push the fuel tank 12 in or pull it out quickly to replenish fuel. The fuel tank 12 is slidably connected to the inner wall of the combustion chamber 2. The fuel tank 12 is used to centrally store the fuel required for combustion. The fuel can be easily replaced and replenished by sliding operation. Several heat conduction grooves 19 are opened on the top wall inside the combustion chamber 2. The heat conduction grooves 19 can efficiently conduct the heat generated by the combustion of fuel in the combustion chamber 2 to the heating chamber 3 above, ensuring that the heating chamber 3 can obtain a stable and sufficient heat source.

[0018] Reference Figures 1-3The lower part of the housing 1 has an insulated chamber 4, which is mainly used to maintain the heated rock sample at a constant temperature to prevent the sample temperature from dropping rapidly after heating, thus affecting subsequent experimental observation or detection. Several third rollers 13 are rotatably connected inside the insulated chamber 4. The third rollers 13 reduce the resistance when the second loading tray 15 moves, allowing the second loading tray 15 to slide more smoothly within the insulated chamber 4. Second guide rails 14 are provided on both inner walls of the insulated chamber 4. The second guide rails 14 provide precise guidance for the sliding of the second loading tray 15, ensuring that the second loading tray 15 can move stably within the insulated chamber 4. Several fourth rollers 16 are rotatably connected inside the insulated chamber 4. The fourth rollers 16 can reduce the resistance of the third loading tray 15... The friction coefficient between the third loading tray 18 and the bottom wall of the insulation chamber 4 is low, which facilitates the operation of the operator to pick up and put down the third loading tray 18. The inner walls on both sides of the insulation chamber 4 are provided with third guide rails 17, which provide a stable path for the sliding of the third loading tray 18 and prevent the third loading tray 18 from tilting during movement. The inner wall of the second guide rail 14 is slidably connected to the second loading tray 15, which is used to place the rock sample that needs to be insulated. The sample can be conveniently placed in the insulation chamber 4 by sliding on the second guide rail 14. The inner wall of the third guide rail 17 is slidably connected to the third loading tray 18, which can help to support the insulated sample, increase the sample storage capacity of the insulation chamber 4, and meet the experimental needs of insulating multiple groups of samples at the same time.

[0019] Reference Figure 1 A control panel 20 is fixedly connected to the outer wall of the enclosure 1. The control panel 20 integrates various control functions of the device. Operators can set experimental parameters such as temperature and pressure through the control panel 20, and at the same time check the operating status of the device in real time. A first button 21 for increasing the internal pressure of the device is set on the outer wall of the enclosure 1. When it is necessary to increase the internal confining pressure of the device, pressing the first button 21 will trigger the pressurizer 9 to start the relevant functions and gradually increase the internal pressure to the value required for the experiment. A second button 22 for decreasing the internal pressure of the device is set on the outer wall of the enclosure 1. When the experiment is over or it is necessary to reduce the internal pressure, pressing the second button 22 will open the corresponding pressure relief structure and slowly reduce the internal pressure of the device to ensure operational safety.

[0020] Reference Figure 1 A valve 10 is fixedly connected to the outer wall of the housing 1. The valve 10 can be used to control the entry and exit of the pressure medium inside the housing 1, and plays a regulating role in the process of pressure adjustment or pressure relief of the device. It can also assist in pressure relief in emergency situations to ensure the stability of the device operation.

[0021] Reference Figures 2-5The bottom wall of the first loading tray 7 abuts against the outer wall of the first roller 5. This abutment method allows the weight of the first loading tray 7 to be evenly distributed on the first roller 5. The rotation of the first roller 5 enables the smooth movement of the first loading tray 7 and reduces jamming during movement. The bottom wall of the second loading tray 15 abuts against the outer wall of the third roller 13, keeping the second loading tray 15 in close contact with the third roller 13. The rotation of the third roller 13 significantly reduces the frictional resistance when the second loading tray 15 slides. The bottom wall of the third loading tray 18 abuts against the outer wall of the fourth roller 16, ensuring that the third loading tray 18 is always in contact with the fourth roller 16 during movement. The rotation of the fourth roller 16 ensures that the third loading tray 18 slides smoothly and avoids damage to the sample due to unstable sliding.

[0022] Reference Figures 1-3 The outer casing 1 is rotatably connected to a first door 23, which can open and close the heating chamber 3 by rotating the first door 23. When closed, it can tightly seal the heating chamber 3, reducing heat loss and pressure leakage inside the chamber. The outer casing 1 is rotatably connected to a second door 24, which can control the opening and closing of the combustion chamber 2 by rotating the second door 24. When closed, it can maintain a stable combustion environment inside the combustion chamber 2, preventing heat leakage and gas leakage from fuel combustion. The outer casing 1 is rotatably connected to a third door 25, which can open or close the insulation chamber 4 by rotating the third door 25. When closed, it can effectively isolate the insulation chamber 4 from heat exchange with the outside world, maintaining a stable temperature inside the chamber.

[0023] Reference Figures 1-3 The first compartment door 23 is compatible with the heating compartment 3. This compatibility ensures that when the first compartment door 23 is closed, it can completely cover the opening of the heating compartment 3, forming a good sealing effect and ensuring the stability of the high temperature and high pressure environment inside the heating compartment 3. The second compartment door 24 is compatible with the combustion compartment 2, so that the second compartment door 24 can precisely fit the opening of the combustion compartment 2. When closed, it can maintain the sealing of the combustion compartment 2 and provide a stable space for fuel combustion. The third compartment door 25 is compatible with the insulation compartment 4, so that the third compartment door 25 perfectly matches the opening of the insulation compartment 4. When closed, it can minimize the heat loss inside the insulation compartment 4 and ensure that the insulation function is effectively performed.

[0024] Working principle: The chamber 1 serves as the basic support for the entire device. At startup, the second chamber door 24 is opened first, and fuel is replenished by sliding the fuel tank 12 using the second roller 11 on the bottom wall of the combustion chamber 2. After replenishment, the second chamber door 24 is closed to seal the combustion chamber 2. Next, the first chamber door 23 is opened, and the rock sample to be heated is placed on the first loading tray 7. The first loading tray 7 is pushed to slide along the first guide rails 6 on both sides of the heating chamber 3. Simultaneously, the first roller 5, which is against the bottom wall of the first loading tray 7, rotates to reduce friction, helping it to smoothly enter the heating chamber 3. The first chamber door 23 is then closed. The operator sets the temperature and confining pressure parameters through the control panel 20 on the outer wall of the chamber 1, and presses the first button 21 to trigger the pressure device 9 on the inner wall of the chamber 1 to pressurize, coordinating with the valve 10 to adjust... Pressure is applied to create a high confining pressure environment. The heat generated by fuel combustion in combustion chamber 2 is conducted to heating chamber 3 via heat conduction groove 19 to heat the sample. Temperature sensor 8 monitors the temperature in real time and feeds it back to control panel 20 to adjust the heating status. After the sample is heated, the first chamber door 23 is opened, and the first loading tray 7 is pulled out with the help of the first roller 5 and the first guide rail 6. Then the third chamber door 25 is opened, and the sample is transferred to the second loading tray 15 or the third loading tray 18. The sample is then pushed into the insulation chamber 4 along the second guide rail 14 and the third guide rail 17, respectively. The third chamber door 25 is closed for constant temperature preservation. After the experiment, the second button 22 is pressed and the valve 10 is used to release the pressure. After the pressure returns to normal, the third chamber door 25 is opened and the second loading tray 15 or the third loading tray 18 is pulled out to complete the sample removal.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature rock heating device in a high confining pressure environment, comprising a box (1), characterized in that: The top of the box (1) is provided with a heating chamber (3), and the center of the box (1) is provided with a combustion chamber (2). The heating chamber (3) is rotatably connected with several first rollers (5). The inner walls of both sides of the heating chamber (3) are provided with first guide rails (6). The inner walls of the first guide rails (6) are slidably connected with first loading discs (7). The top wall of the box (1) is fixedly connected with a temperature sensor (8). The inner wall of the box (1) is fixedly connected with a pressure device (9). The bottom wall of the combustion chamber (2) is rotatably connected with several second rollers (11). The inner wall of the combustion chamber (2) is slidably connected with a fuel tank (12). The top wall of the combustion chamber (2) is provided with several heat conduction grooves (19).

2. The apparatus according to claim 1, wherein: The lower end of the box (1) is provided with a heat preservation chamber (4). Several third rollers (13) are rotatably connected inside the heat preservation chamber (4). Second guide rails (14) are provided on both sides of the inner wall of the heat preservation chamber (4). Several fourth rollers (16) are rotatably connected inside the heat preservation chamber (4). Third guide rails (17) are provided on both sides of the inner wall of the heat preservation chamber (4). A second loading plate (15) is slidably connected to the inner wall of the second guide rail (14). A third loading plate (18) is slidably connected to the inner wall of the third guide rail (17).

3. The apparatus according to claim 1, wherein: The outer wall of the box (1) is fixedly connected to a control panel (20). The outer wall of the box (1) is provided with a first button (21) for increasing the internal pressure of the device, and a second button (22) for decreasing the internal pressure of the device.

4. The apparatus according to claim 1, wherein: A valve (10) is fixedly connected to the outer wall of the box (1).

5. The apparatus according to claim 2, wherein: The bottom wall of the first loading disc (7) abuts against the outer wall of the first roller (5), the bottom wall of the second loading disc (15) abuts against the outer wall of the third roller (13), and the bottom wall of the third loading disc (18) abuts against the outer wall of the fourth roller (16).

6. The apparatus according to claim 1, wherein: The box (1) is rotatably connected to a first compartment door (23), the box (1) is rotatably connected to a second compartment door (24), and the box (1) is rotatably connected to a third compartment door (25).

7. The apparatus according to claim 6, wherein: The first door (23) is adapted to the heating chamber (3), the second door (24) is adapted to the combustion chamber (2), and the third door (25) is adapted to the heat preservation chamber (4).

Images