Rock triaxial ultrahigh temperature confining pressure loading device

Abstract

The utility model relates to the field of geotechnical engineering discloses a rock triaxial ultrahigh temperature confining pressure loading device, including first bottom plate, first bottom plate top fixedly connected with first support, first support top fixedly connected with second bottom plate, second bottom plate top both sides all fixedly connected with long plate, two long plates top all fixedly connected with slide rail, two slide rails top all slidingly connected with two sliding blocks, two sliding blocks top all fixedly connected with transverse plate, transverse plate bottom fixedly connected with first connecting plate, first connecting plate front end fixedly connected with first pull rod, wherein another transverse plate bottom fixedly connected with second connecting plate, in the utility model, second air cylinder drives rotating plate, linkage pull rod drives transverse plate to slide along slide rail oppositely, realizes sample radial confining pressure even application, cooperates first air cylinder auxiliary pressurization, reduces pressure fluctuation, promotes confining pressure loading strength.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering, and in particular to a triaxial ultra-high temperature confining pressure loading device for rock. Background Technology

[0002] In fields such as deep resource development and underground engineering construction, it is necessary to study the mechanical properties of rocks under the coupled environment of ultra-high temperature and high confining pressure. As a result, the triaxial ultra-high temperature confining pressure loading device for rocks has become a key experimental equipment. With the increasing requirements for experimental precision, although internal heating and metal sealing structures have been gradually introduced, there are still problems such as weak coupling between the heating and loading systems and a lack of accurate measurement methods for the true temperature of the sample, which restricts the accuracy and efficiency of the study on the mechanical behavior of rocks under high temperature and high pressure. Existing technologies have limited power output, making it difficult to meet high-pressure loading requirements. Furthermore, the power output is intermittent, which can easily lead to pressure fluctuations and affect test accuracy. The loading method is also limited, making it impossible to achieve multi-directional coordinated loading. In addition, the compatibility is poor, and if the clamping ring becomes worn, deformed, or contaminated with impurities after long-term use, it cannot be disassembled and replaced individually, requiring overall repair or replacement of components. Therefore, a triaxial ultra-high temperature confining pressure loading device for rocks is proposed to solve the above problems. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a triaxial ultra-high temperature confining pressure loading device for rocks, which aims to improve the problems of existing technologies that are mostly driven by a single cylinder and have inconvenient clamping ring disassembly.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a triaxial ultra-high temperature confining pressure loading device for rock, comprising a first base plate, a first support fixedly connected to the top of the first base plate, a second base plate fixedly connected to the top of the first support, long plates fixedly connected to both sides of the top of the second base plate, slide rails fixedly connected to the top of each of the two long plates, two sliders slidably connected to the top of each of the two slide rails, a horizontal plate fixedly connected to the top of each of the two sliders, a first connecting plate fixedly connected to the bottom of the horizontal plate, a first pull rod fixedly connected to the front end of the first connecting plate, a second connecting plate fixedly connected to the bottom of the other horizontal plate, a third pull rod fixedly connected to the front end of the second connecting plate, a second cylinder fixedly installed on the top of the second base plate, a second pull rod fixedly connected to the output end of the second cylinder, a rotating plate rotatably connected to the top of the second base plate, the second pull rod fixedly connected to one end of the rotating plate, the first pull rod fixedly connected to the other end of the rotating plate, and the third pull rod fixedly connected to the top of the rotating plate.

[0005] As a further description of the above technical solution: Each of the two horizontal plates has a pressure rod fixedly connected to its front end; each of the two pressure rods has a clamping assembly fixedly connected to one end; a second bracket is fixedly connected to the top of the first bracket; a first cylinder is fixedly installed inside the top of the second bracket; the clamping assembly is fixedly connected to the output end of the first cylinder; the clamping assembly includes a pressure plate; a connecting block is fixedly installed at the front end of the pressure plate; an annular plate is fixedly connected to the front end of the connecting block; several heating wires are fixedly installed at the front end of the annular plate; a locking assembly is fixedly connected to the front end of the pressure plate; the locking assembly includes an outer frame; the outer frame is fixedly connected to the front side of the pressure plate; a pin is slidably connected inside the outer frame; one end of the pin is fixedly connected to a pull post; one end of the pin is fixedly connected to a spring; one end of the spring is fixedly connected to one end of the inner wall of the outer frame; and the pin is slidably connected inside the outer frame.

[0006] As a further description of the above technical solution: the spring is sleeved on the outside of the pull column, and a handle is fixedly connected to one end of the pull column.

[0007] As a further description of the above technical solution: the two horizontal plates are located at both ends of the two sliders, and a support plate is fixedly connected between the two long plates.

[0008] As a further description of the above technical solution: the two clamping assemblies are slidably connected to the top of the support plate.

[0009] As a further description of the above technical solution: the second cylinder is located between one of the horizontal plates.

[0010] As a further description of the above technical solution: the second base plate is located inside the second bracket.

[0011] As a further description of the above technical solution: the rotating plate is located between the support plate and the second base plate.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the second cylinder drives the rotating plate, and the linkage rod drives the horizontal plate to slide in opposite directions along the slide rail, so as to achieve uniform application of radial confining pressure on the sample. In conjunction with the first cylinder to assist in pressurization, pressure fluctuations are reduced and the confining pressure loading force is increased, which meets the requirements of triaxial test for pressure stability.

[0013] 2. In this utility model, the locking component has a pin and a spring working together, and pulling the handle can quickly unlock the clamp, which is convenient for picking up and putting in the sample, avoiding damage to the sample or seal by forcibly inserting it, and is suitable for samples of different specifications, thus improving operating efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a triaxial ultra-high temperature confining pressure loading device for rock proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the first cylinder of a triaxial ultra-high temperature confining pressure loading device for rocks proposed in this utility model; Figure 3 This is a schematic diagram of the heating wire of a triaxial ultra-high temperature confining pressure loading device for rocks proposed in this utility model; Figure 4 This is a schematic diagram of the rotating plate of a triaxial ultra-high temperature confining pressure loading device for rocks proposed in this utility model. Figure 5 This is a schematic cross-sectional view of the pin section of a triaxial ultra-high temperature confining pressure loading device for rocks proposed in this utility model.

[0015] Legend: 1. First base plate; 2. First bracket; 3. First connecting plate; 4. Horizontal plate; 5. Pin; 6. Second bracket; 7. First cylinder; 8. Pressure plate; 9. Second base plate; 10. Handle; 11. Heating wire; 12. Ring plate; 13. Support plate; 14. Slide rail; 15. Slider; 16. Long plate; 17. Second cylinder; 18. First pull rod; 19. Second pull rod; 20. Third pull rod; 21. Second connecting plate; 22. Rotating plate; 23. Pull column; 24. Outer frame; 25. Spring; 26. Pressure rod; 27. Connecting block. 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 1 , Figure 3 and Figure 4This utility model provides an embodiment of a triaxial ultra-high temperature confining pressure loading device for rocks, comprising a first base plate 1, which serves as the bearing foundation of the entire device and provides a stable mounting platform for other components. A first bracket 2 is fixedly connected to the top of the first base plate 1, and the first bracket 2 stands vertically on the first base plate 1, mainly serving to support and lift. A second base plate 9 is fixedly connected to the top of the first bracket 2, and the second base plate 9 constitutes the base of the core transmission and loading platform of the device. Long plates 16 are fixedly connected to both sides of the top of the second base plate 9, and the two long plates 16 are arranged in parallel to provide an mounting base for the slide rail 14. Both slide rails 14 are fixedly connected to each other. The slide rails 14 are preferably high-precision linear guides to ensure smooth and wobbly sliding. Two sliders 15 are slidably connected to the top of each slide rail 14. The sliders 15 slide with the slide rails 14, minimizing friction. A horizontal plate 4 is fixedly connected to the top of each slider 15. The horizontal plate 4 can move horizontally on the slide rails 14 via the sliders 15 and is a key lateral component for transmitting power. A first connecting plate 3 is fixedly connected to the bottom of the horizontal plate 4, serving as a connection point to transmit the movement of the horizontal plate 4 to the linkage mechanism. A first pull rod 18 is fixedly connected to the front end of the first connecting plate 3, which holds the horizontal plate 4... The linear motion is converted into a pulling or pushing force on the rotating plate 22. A second connecting plate 21 is fixedly connected to the bottom of another horizontal plate 4. The second connecting plate 21 functions similarly to the first connecting plate 3, providing a connection point for the transmission on the other side. A third pull rod 20 is fixedly connected to the front end of the second connecting plate 21. The third pull rod 20 and the first pull rod 18 are symmetrically arranged to form a symmetrical drive system. A second cylinder 17 is fixedly installed on the top of the second base plate 9. The second cylinder 17 serves as the main drive source for confining pressure loading, providing stable and controllable power output. A second pull rod 19 is fixedly connected to the output end of the second cylinder 17. The second pull rod 19 is used to transfer the second cylinder... The linear motion of the piston rod of cylinder 17 is directly transmitted to the rotating plate 22. The rotating plate 22 is rotatably connected to the top of the second base plate 9. The rotating plate 22 is the core conversion component of the entire transmission mechanism, which can convert the input motion in one direction into symmetrical output motion in two directions. The second pull rod 19 is fixedly connected to one end of the rotating plate 22, the first pull rod 18 is fixedly connected to the other end of the rotating plate 22, and the third pull rod 20 is fixedly connected to the top of the rotating plate 22. This connection method allows the rotating plate 22 to pull the first pull rod 18 and the third pull rod 20 simultaneously when it rotates under the push of the second pull rod 19, thereby driving the two horizontal plates 4 to move towards or away from each other.

[0018] Reference Figures 1-5Both horizontal plates 4 have pressure rods 26 fixedly connected to their front ends. The pressure rods 26 extend forward perpendicularly to the horizontal plates 4 and are used to transmit the movement of the horizontal plates 4 to the clamping assembly at the front end. One end of each pressure rod 26 is fixedly connected to a clamping assembly, which is the terminal component that directly performs the functions of sample clamping and pressure application. A second bracket 6 is fixedly connected to the top of the first bracket 2. The second bracket 6 is used to support and fix the first cylinder 7 located above the device. The first cylinder 7 is fixedly installed inside the top of the second bracket 6. The first cylinder 7 serves as an auxiliary pressure source and can be applied from the shaft. Additional stabilizing pressure is applied to the clamping assembly to enhance system rigidity. The clamping assembly is fixedly connected to the output end of the first cylinder 7, allowing the power of the first cylinder 7 to directly act on the clamping assembly. The clamping assembly includes a pressure plate 8, which is the main plate structure that bears and transmits the force of the first cylinder 7. A connecting block 27 is fixedly installed at the front end of the pressure plate 8, connecting the pressure plate 8 and the annular plate 12. The annular plate 12 is fixedly connected at the front end of the connecting block 27. The annular plate 12 is the component that directly contacts and wraps the rock sample, and its inner diameter is slightly larger than the sample diameter. Several heating wires 11 are fixedly installed at the front end of the annular plate 12. The heating wires 11 are embedded or tightly fitted in the annular grooves on the inner side of the annular plate 12. The heat generated after being energized can be evenly transferred to the wrapped sample through the annular plate 12, thereby simulating an ultra-high temperature environment. A locking assembly is fixedly connected at the front end of the pressure plate 8. The locking assembly is used to quickly fix the position of the clamping assembly when clamping the sample to prevent it from moving. The locking assembly includes an outer frame 24, which provides a protective and guiding structural framework for the locking assembly. The frame 24 is fixedly connected to the front side of the pressure plate 8. A pin 5 is slidably connected inside the outer frame 24. The pin 5 can slide inside the outer frame 24 under manual pulling to achieve locking and unlocking. One end of the pin 5 is fixedly connected to the pull post 23. The pull post 23 is the direct action component for the operator to apply pulling force. One end of the pin 5 is fixedly connected to the spring 25. One end of the spring 25 is fixedly connected to one end of the inner wall of the outer frame 24, so that the spring 25 is always in a compressed or ready-to-be-compressed state, providing the reset elastic force for the pin 5. The pin 5 is slidably connected inside the outer frame 24.

[0019] Reference Figure 5 The spring 25 is sleeved on the outside of the pull column 23. This structure saves space and ensures that the spring 25 will not deflect when it extends or retracts. One end of the pull column 23 is fixedly connected to a handle 10, which makes it easy for the operator to pull by hand.

[0020] Reference Figure 1 , Figure 3 and Figure 4 Two horizontal plates 4 are located at both ends of two sliders 15. This layout ensures that the horizontal plates 4 are balanced by force and move stably. A support plate 13 is fixedly connected between the two long plates 16. The support plate 13 enhances the structural stability between the two long plates 16 and provides a sliding support plane for the clamping assembly.

[0021] Reference Figures 1-3 Two clamping components are slidably connected to the top of the support plate 13. This means that the pressure plate 8 and other components at the bottom of the clamping components are in contact with the upper surface of the support plate 13 and can slide, which restricts its vertical displacement and ensures the movement trajectory.

[0022] Reference Figure 1 and Figure 4 The second cylinder 17 is located between one of the horizontal plates 4. This description means that the second cylinder 17 is located in the space between the two horizontal plates 4 in the top view, which is compact and makes effective use of space.

[0023] Reference Figure 1 and Figure 3 The second base plate 9 is located inside the second support 6, meaning that the second support 6 may be a portal frame structure, with the second base plate 9 located below or inside it, resulting in a clear structural hierarchy.

[0024] Reference Figure 3 and Figure 4 The rotating plate 22 is located between the support plate 13 and the second base plate 9. This clarifies the installation position of the rotating plate 22 in the vertical direction, so that it can both leave a gap with the upper support plate 13 to avoid interference and be easily connected to the lower second tie rod 19 and other components.

[0025] Working principle: The second cylinder 17 is activated, and its output end pushes the second pull rod 19, causing the rotating plate 22 to rotate around the top of the second base plate 9. The other end of the rotating plate 22 is connected to the first pull rod 18, and the top end is connected to the third pull rod 20, which pulls the two horizontal plates 4 respectively. The horizontal plates 4 slide towards each other along the slide rail 14 with the bottom slider 15, thereby driving the pressure rod 26 and the clamping assembly, including the annular plate 12, to move closer together and apply radial confining pressure to the sample. At the same time, the first cylinder 7 is activated, and its output end assists in pushing the clamping assembly to enhance the stability and accuracy of the confining pressure loading.

[0026] First, pull the handle 10 to move the pull column 23 and the pin 5 backward, compressing the spring 25 and placing the rock sample between the two annular plates 12. Release the handle 10, and the spring 25 will reset and push the pin 5 into the corresponding positioning structure. The sample is initially fixed by the locking assembly to prevent clamping misalignment. The heating wire 11 on the annular plate 12 is energized, and the heating wire 11 generates heat and transfers it to the annular plate 12. The sample is heated by the annular plate 12 evenly wrapping the sample, simulating an ultra-high temperature environment.

[0027] 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 triaxial ultra-high temperature confining pressure loading device for rock, comprising a first base plate (1), characterized in that: A first bracket (2) is fixedly connected to the top of the first base plate (1), and a second base plate (9) is fixedly connected to the top of the first bracket (2). Long plates (16) are fixedly connected to both sides of the top of the second base plate (9). Slide rails (14) are fixedly connected to the top of each of the two long plates (16). Two sliders (15) are slidably connected to the top of each of the two slide rails (14). A horizontal plate (4) is fixedly connected to the top of each of the two sliders (15). A first connecting plate (3) is fixedly connected to the bottom of the horizontal plate (4). A first pull rod (18) is fixedly connected to the front end of the first connecting plate (3). The other... A second connecting plate (21) is fixedly connected to the bottom of the horizontal plate (4), and a third pull rod (20) is fixedly connected to the front end of the second connecting plate (21). A second cylinder (17) is fixedly installed on the top of the second base plate (9), and a second pull rod (19) is fixedly connected to the output end of the second cylinder (17). A rotating plate (22) is rotatably connected to the top of the second base plate (9). The second pull rod (19) is fixedly connected to one end of the rotating plate (22), the first pull rod (18) is fixedly connected to the other end of the rotating plate (22), and the third pull rod (20) is fixedly connected to the top of the rotating plate (22).

2. The triaxial ultra-high temperature confining pressure loading device for rock according to claim 1, characterized in that: Both of the two horizontal plates (4) are fixedly connected to pressure rods (26) at their front ends, and both pressure rods (26) are fixedly connected to clamping assemblies at one end. The top of the first bracket (2) is fixedly connected to a second bracket (6), and the top of the second bracket (6) is fixedly installed with a first cylinder (7). The clamping assembly is fixedly connected to the output end of the first cylinder (7). The clamping assembly includes a pressure plate (8), and the front end of the pressure plate (8) is fixedly installed with a connecting block (27). The front end of the connecting block (27) is fixedly connected with an annular plate (12). 12) Several heating wires (11) are fixedly installed at the front end. A locking component is fixedly connected to the front end of the pressure plate (8). The locking component includes an outer frame (24). The outer frame (24) is fixedly connected to the front side of the pressure plate (8). A pin (5) is slidably connected inside the outer frame (24). One end of the pin (5) is fixedly connected to the pull column (23). One end of the pin (5) is fixedly connected to a spring (25). One end of the spring (25) is fixedly connected to one end of the inner wall of the outer frame (24). The pin (5) is slidably connected inside the outer frame (24).

3. The triaxial ultra-high temperature confining pressure loading device for rock according to claim 2, characterized in that: The spring (25) is sleeved on the outside of the pull post (23), and a handle (10) is fixedly connected to one end of the pull post (23).

4. The triaxial ultra-high temperature confining pressure loading device for rock according to claim 1, characterized in that: The two horizontal plates (4) are located at both ends of the two sliders (15), and a support plate (13) is fixedly connected between the two long plates (16).

5. The triaxial ultra-high temperature confining pressure loading device for rock according to claim 2, characterized in that: The two clamping assemblies are slidably connected to the top of the support plate (13).

6. The triaxial ultra-high temperature confining pressure loading device for rock according to claim 1, characterized in that: The second cylinder (17) is located between one of the cross plates (4).

7. The triaxial ultra-high temperature confining pressure loading device for rock according to claim 1, characterized in that: The second base plate (9) is located inside the second bracket (6).

8. The triaxial ultra-high temperature confining pressure loading device for rock according to claim 1, characterized in that: The rotating plate (22) is located between the support plate (13) and the second base plate (9).

Images