Rock triaxial tester electric rotation buckle fixing device and fixing method

Abstract

The invention belongs to the technical field of petroleum drilling engineering, and particularly relates to an electric rotary buckle fixing device and method for a rock triaxial tester. The device comprises a control device, a motor, a buckle valve, an iron hoop ring and a guide rail, the iron hoop ring is of a two-semicircle type disconnected structure, is installed on the guide rail in an oblique symmetry mode and can slide along the guide rail, the two buckle valves are both of a semicircle structure and are installed on the inner sides of the two semicircle type iron hoop rings in an oblique symmetry mode, and tooth grooves are formed in the middles of the outer sides of the buckle valves; the tooth grooves correspond to the empty grooves in position, motor gears are installed on the tooth grooves, and the motor gears can rotate along tracks formed by the tooth grooves and the empty grooves and drive the two buckle valves to rotate. An optical signal receiver and a signal prompting lamp are further arranged on the iron hoop ring, after the iron hoop ring is in butt joint, the optical signal receiver and the signal prompting lamp promote the gear to rotate and drive the buckle to rotate automatically, other redundant operation is not needed, manual intervention is reduced, operation steps are optimized, and the experiment efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil drilling engineering, and particularly relates to an electric rotating buckle fixing device and a fixing method for a rock triaxial tester. Background Art

[0002] Rock triaxial experiments are an experimental method widely used in the field of rock mechanics, mainly used to study the mechanical properties and deformation characteristics of rocks under triaxial stress states, and play an important role in determining rock mechanical parameters, studying rock failure mechanisms, and simulating actual engineering stress states. By studying the mechanical behavior of rocks in special environments such as high temperature and high pressure in the formation, it helps us in the design and optimization of rock materials in engineering operations.

[0003] When conducting rock triaxial experiments, rock specimens are usually placed in the reaction kettle of a triaxial testing machine. To avoid the hazards brought by pressurization, buckle fixing is required at the lower end of the reaction kettle. The traditional fixing method is to fix two or three buckle valves at the place where the reaction kettle contacts the base, and put an iron hoop around the buckle valves for fixation to prevent the buckle valves from popping open due to pressurization.

[0004] During actual operation, since the experimental device is pressurized with oil, it is necessary to fill and drain oil into the reaction kettle at the beginning and end of the experiment respectively. This results in the buckle valves being infiltrated by oil when installing them. There are certain safety hazards for experimental personnel when installing and removing the buckle valves. At the same time, it also makes the preparation stage of the experiment and the disassembly operation after the experiment inconvenient, affecting the efficiency of the experiment. Therefore, reducing the human participation in the buckle installation link is more conducive to establishing a safe experimental environment and reducing the risk of injury to experimental personnel. At the same time, it is also beneficial to carry out the experiment more efficiently and improve work efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electric rotating buckle fixing device and a fixing method, which can be used for fixing the lower end of the reaction kettle in rock triaxial mechanical experiments. Through simple operations, the fixing purpose can be achieved, and the role of personnel in the installation process can be minimized to replace it with machine self - fixing, thereby enhancing the efficiency and safety of the experiment. The technical solution adopted is as follows:

[0006] An electric rotating buckle fixing device for a rock triaxial tester includes a control device and a motor. The device also includes buckle valves, an iron hoop, and a guide rail;

[0007] The iron hoop is a two - semi - circular disconnected structure, symmetrically installed obliquely on the guide rail and can slide along the guide rail to combine the two semi - circular iron hoops into a circle; an empty groove is centrally arranged on the outer side wall of the iron hoop;

[0008] The buckle valve consists of two pieces, both of which are semicircular structures, and are obliquely symmetrically installed on the inner sides of two semicircular iron hoops, and the buckle valve is wrapped by the iron hoops; a tooth groove is centrally arranged on the outer side of the buckle valve; the position of the tooth groove corresponds to the position of the empty slot, and a motor gear is installed on the tooth groove, the motor gear is connected to the motor, and the motor is connected to the control device; the motor gear can rotate along the track formed by the tooth groove and the empty slot, and drive the two buckle valves to rotate.

[0009] Preferably, the side wall at the disconnection point of the two semicircular iron hoops has an inwardly concave optical signal receiver in the middle of one end, and an outwardly convex iron ring protrusion is provided at the other end, and the iron ring protrusion can be made of rubber material; when the two semicircular iron hoops are connected, the inwardly concave optical signal receiver fits with the outwardly convex iron ring protrusion, and the iron ring protrusion completely covers the optical signal receiver.

[0010] Preferably, a signal prompt light is arranged on the top of the iron hoop at one end of the optical signal receiver, the optical signal receiver is connected to the signal prompt light, and the optical signal receiver and the signal prompt light are connected to a control device.

[0011] Preferably, the bottom of the snap valve is installed on the iron hoop, and the top, side and bottom of the snap valve are all wrapped by the iron hoop; the outer diameter of the snap valve is slightly smaller than the inner diameter of the iron hoop, so that the snap valve can slide in the iron hoop without touching the iron hoop.

[0012] Preferably, the motor gear is installed on one side of the tooth groove and the empty slot, and the push rod is installed on the other side of the tooth groove and the empty slot; the motor gear and the push rod on the two semicircular iron hoops and the buckle valve are installed in oblique symmetry.

[0013] Preferably, pulleys are installed at the bottom of both ends of the semicircular iron hoop so as to be able to slide on two guide rails.

[0014] A method for fixing an electric rotating buckle fixing device of a rock triaxial testing instrument comprises the following steps:

[0015] (1) Push the two semicircular iron hoops toward the device to be fixed through the guide rail. When the iron hoops are connected and merged, the optical signal receiver cannot sense the light. At this time, the signal indicator light flashes to remind that the closure is complete.

[0016] (2) After the signal indicator light flashes, the motor gear starts to work, and the motor gear rotates along the track formed by the empty slot and the tooth slot, driving the buckle valve to rotate, so that the crack direction of the buckle valve is staggered with the crack direction of the iron hoop, thereby further tightening the device to be fixed;

[0017] (3) When the experiment is over, push and pull the push rod to reset the buckle valve, and under the action of the guide rail, the iron hoop is separated, thereby separating the two buckle valves.

[0018] Preferably, the optical signal receiver cooperates with the protrusion of the iron ring, and the thickness of the protrusion of the iron ring is just enough to fill the recessed optical signal receiver, thereby blocking the optical signal receiver from sensing light.

[0019] Preferably, when the optical signal receiver senses no light, a signal is transmitted to the signal prompt light, indicating that the iron hoop has been docked and the buckle valve has been fastened to the device to be fixed; the control device controls the motor to work, thereby driving the motor gear to rotate, and the motor gear drives the direction of the buckle valve crack to be staggered with the direction of the iron hoop crack, thereby achieving the effect of secondary fixation.

[0020] Preferably, the snap-on valve can rotate on the iron hoop, and the motor gear is matched with the tooth groove and the empty groove; the diameter of the circle formed by the snap-on valve is matched with the outer diameter of the device to be fixed.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The fixing method of the present invention is a rotating buckle type fixing. Compared with the traditional three-petal buckle, when fixing, the three buckles need to be installed one by one and the iron hoop ring is put on for secondary fixing. This method only needs to connect the iron hoop ring, and then use the optical signal receiver and the prompt light to promote the gear operation to drive the buckle to rotate autonomously. No other redundant operations are required, which reduces human intervention, optimizes the operation steps, and greatly improves the experimental efficiency.

[0023] (2) The simple and convenient operation of the present invention not only reduces manual operation, but also has safety hazards such as pinching hands and bumping during the traditional installation process. In operation, the present invention only requires the two iron hoops to be connected, and then the device automatically performs subsequent steps, which reduces excessive contact between the experimenter and the device and improves the safety of the experiment.

[0024] (3) When the experiment is over, push and pull the push rod to reset the buckle, and under the action of the guide rail, the iron hoop is separated to separate the buckle from the reactor, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic structural diagram of an electric rotating buckle fixing device for a rock triaxial testing instrument.

[0026] Figure 2 It is a left side view of an electric rotating buckle fixing device of a rock triaxial testing instrument of the present invention.

[0027] Figure 3 It is a right side view of an electric rotating buckle fixing device of a rock triaxial testing instrument of the present invention.

[0028] Figure 4This is a flowchart of the fixing method for the electric rotating buckle fixing device of a rock triaxial testing machine according to the present invention.

[0029] In the figure, 1 - buckle valve, 2 - iron hoop, 3 - motor gear, 4 - tooth groove, 5 - push rod, 6 - optical signal receiver, 7 - signal indicator light, 8 - iron hoop protrusion, 9 - guide rail. Specific embodiments

[0030] The accompanying drawings are only for illustrative purposes and should not be construed as limiting the present invention; for those skilled in the art, some well-known general knowledge and its descriptions in the drawings may be omitted.

[0031] In order to clearly illustrate the technical solution of the present invention, the following will be further described in detail with reference to the accompanying drawings and embodiments; if the raw materials or instruments used in the present invention are not specifically stated, they can all be purchased through commercial channels; for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0032] Embodiment 1

[0033] As Figure 1 shown, an electric rotating buckle fixing device for a rock triaxial testing machine includes a control device and a motor (omitted in the figure), and the device further includes a buckle valve 1, an iron hoop 2, and a guide rail 9;

[0034] The iron hoop 2 is a two - semi - circular disconnected structure, which is symmetrically installed on the guide rail 9 obliquely and can slide along the guide rail 9 so that the two semi - circular iron hoops 1 are combined into a circle; an empty groove is centrally arranged on the outer side wall of the iron hoop 2.

[0035] The buckle valve 1 is composed of two pieces, both of which are semi - circular structures, and are symmetrically installed on the inner sides of the two semi - circular iron hoops 2 obliquely, and the buckle valve 1 is wrapped by the iron hoop 2; a tooth groove 4 is centrally arranged on the outer side of the buckle valve 1; the position of the tooth groove 4 corresponds to that of the empty groove, and a motor gear 3 is installed on the tooth groove 4, and the motor gear 3 is connected to the motor and the control device; the motor gear 3 can rotate along the track formed by the tooth groove 4 and the empty groove and drive the two buckle valves 1 to rotate.

[0036] As a further preference, on the side wall at the disconnected part of the two semi - circular iron hoops 2, a concave optical signal receiver 6 is arranged in the middle at one end, and an outward - protruding iron hoop protrusion 8 is arranged at the other end, and the iron hoop protrusion 8 can be made of rubber material; when the two semi - circular iron hoops 2 are joined, the concave optical signal receiver 6 fits with the position of the outward - protruding iron hoop protrusion 8, and the iron hoop protrusion 8 completely covers the optical signal receiver 6. And a signal indicator light 7 is arranged at the top of the iron hoop 2 at the end where the optical signal receiver 6 is arranged, the optical signal receiver 6 is connected to the signal indicator light 7, and the optical signal receiver 6 and the signal indicator light 7 are connected to the control device.

[0037] The bottom of the snap-on valve 1 is mounted on the iron hoop 2 , and the top, side and bottom of the snap-on valve 1 are all wrapped by the iron hoop 2 ; the outer diameter of the snap-on valve 1 is smaller than the inner diameter of the iron hoop 2 .

[0038] like Figure 2 , 3 As shown, as a further preference, the motor gear 3 is installed on one side of the tooth groove 4 and the empty slot, and the push rod 5 is installed on the other side of the tooth groove 4 and the empty slot; the two semicircular iron hoops 2 and the motor gear 3 and the push rod 5 on the buckle valve 1 are installed in an obliquely symmetrical manner.

[0039] Pulleys are installed at the bottom of both ends of the semicircular iron hoop 2, and the two ends are respectively installed on two guide rails 9 and can slide on the two guide rails 9.

[0040] like Figure 4 As shown, a method for fixing an electric rotating buckle fixing device of a rock triaxial testing instrument comprises the following steps:

[0041] (1) Push the two semicircular iron hoops 2 toward the device to be fixed and merge through the guide rail 9. When the iron hoops 2 are docked and merged, the optical signal receiver 6 cooperates with the iron ring protrusion 8. The thickness of the iron ring protrusion 8 can just fill the recessed optical signal receiver 6, thereby blocking the optical signal receiver 6 and making the optical signal receiver 6 unable to sense light. When the optical signal receiver 6 can receive a little light source, it is necessary to continue to push the iron hoop 2; when the optical signal receiver 6 cannot sense any light, a signal is transmitted to the signal prompt light 7, indicating that the iron hoop 2 has been docked and the buckle valve 1 has been fastened to the device to be fixed (the reactor in Example 1). At this time, the signal prompt light 7 flashes to remind that the closure is complete.

[0042] (2) After the signal indicator light 7 flashes, the control device controls the motor to work. The motor gear 3 acts as the driving gear of the motor and starts to work under the drive of the motor. The motor gear 3 rotates along the track formed by the empty slot and the tooth slot 4, driving the buckle valve 1 to rotate, so that the crack direction of the buckle valve 1 is staggered with the crack direction of the iron hoop 2, thereby achieving the effect of further tightening the device to be fixed.

[0043] (3) After the experiment is finished, the push rod 5 is pushed and pulled to reset the buckle valve 1, and the iron hoop 2 is separated under the action of the guide rail 9, thereby separating the two buckle valves 1.

[0044] The device of the present invention can be installed on a rock triaxial mechanics testing machine, and the circle formed by the two buckle valves 1 is adapted to the diameter of the reactor. The iron hoop 2 is combined to form the first layer of fixation, and the motor gear 3 drives the two buckle valves 1 to rotate in a clockwise or counterclockwise direction, so that the cracks of the buckle valves 1 are staggered with the cracks 2 of the iron hoop, and the two semicircular iron hoop 2 are not easy to separate, forming a secondary fixation.

[0045] Example 2

[0046] The push rod 5 is not installed. The sliding of the motor gear 3 is automatically controlled by the control device.

[0047] A method for fixing an electric rotating buckle fixing device of a rock triaxial testing instrument comprises the following steps:

[0048] (1) Push the two semicircular iron hoops 2 toward the device to be fixed through the guide rail 9. When the iron hoops 2 are docked and merged, the optical signal receiver 6 cooperates with the iron ring protrusion 8. The thickness of the iron ring protrusion 8 can just fill the recessed optical signal receiver 6, thereby blocking the optical signal receiver 6 and making it unable to sense light. When the optical signal receiver 6 cannot sense any light, a signal is transmitted to the signal indicator 7, indicating that the iron hoop 2 has been docked and the buckle valve 1 has been fastened to the device to be fixed. At this time, the signal indicator 7 flashes to remind that the closure is complete;

[0049] (2) After the signal indicator light 7 flashes, the control device controls the motor to work, and the motor gear 3 starts to work. The motor gear 3 rotates along the track formed by the empty slot and the tooth slot 4, driving the buckle valve 1 to rotate, so that the crack direction of the buckle valve 1 is offset from the crack direction of the iron hoop 2, thereby achieving the effect of further tightening the device to be fixed.

[0050] (3) After the experiment is over, the motor is controlled by the control device to drive the motor gear to slide in the opposite direction, so that the buckle valve 1 is restored, the crack and the crack of the iron hoop are at the same position, and the guide rail 9 is pushed to separate the iron hoop 2, thereby separating the two buckle valves 1.

[0051] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An electric rotating buckle fixing device for a rock triaxial testing instrument, comprising a control device and a motor, characterized in that: The device also includes a snap valve, an iron hoop, and a guide rail; The iron hoop is a two-semicircle disconnected structure, which is obliquely symmetrically installed on the guide rail and can slide along the guide rail so that the two semicircular iron hoops are combined into a circle; an empty groove is arranged in the center of the outer wall of the iron hoop; The buckle valve consists of two pieces, both of which are semicircular structures, and are obliquely symmetrically installed on the inner sides of two semicircular iron hoops, and the buckle valve is wrapped by the iron hoops; a tooth groove is centrally arranged on the outer side of the buckle valve; the position of the tooth groove corresponds to the position of the empty slot, and a motor gear is installed on the tooth groove, and the motor gear is connected to the motor; the motor gear can rotate along the track formed by the tooth groove and the empty slot, and drive the two buckle valves to rotate.

2. The electric rotating buckle fixing device for a rock triaxial testing instrument according to claim 1 is characterized in that: The side wall at the disconnection point of the two semicircular iron hoops has an inwardly concave optical signal receiver in the middle of one end and an outwardly convex iron ring protrusion at the other end; when the two semicircular iron hoops are connected, the inwardly concave optical signal receiver fits with the outwardly convex iron ring protrusion, and the iron ring protrusion completely covers the optical signal receiver.

3. The electric rotating buckle fixing device for a rock triaxial testing instrument according to claim 2 is characterized in that: A signal prompt light is arranged on the top of the iron hoop at one end of the optical signal receiver, the optical signal receiver is connected with the signal prompt light, and the optical signal receiver and the signal prompt light are connected with a control device.

4. The electric rotating buckle fixing device for a rock triaxial testing instrument according to claim 1 is characterized in that: The bottom of the snap-on valve is installed on the iron hoop, and the top, side and bottom of the snap-on valve are all wrapped by the iron hoop; the outer diameter of the snap-on valve is smaller than the inner diameter of the iron hoop.

5. The electric rotating buckle fixing device for a rock triaxial testing instrument according to claim 1 is characterized in that: The motor gear is installed on one side of the tooth groove and the empty slot, and the push rod is installed on the other side of the tooth groove and the empty slot; the motor gear and the push rod on the two semicircular iron hoops and the buckle valve are installed in oblique symmetry.

6. The electric rotating buckle fixing device for a rock triaxial testing instrument according to claim 1 is characterized in that: Pulleys are installed at the bottom of both ends of the semicircular iron hoop, which can slide on two guide rails.

7. A method for fixing an electric rotating buckle fixing device of a rock triaxial testing instrument according to any one of claims 1 to 6, characterized in that: The steps include: (1) Push the two semicircular iron hoops toward the device to be fixed through the guide rail. When the iron hoops are connected and merged, the optical signal receiver cannot sense the light. At this time, the signal indicator light flashes to remind that the closure is complete. (2) After the signal indicator light flashes, the motor gear starts to work, and the motor gear rotates along the track formed by the empty slot and the tooth slot, driving the buckle valve to rotate, so that the crack direction of the buckle valve is staggered with the crack direction of the iron hoop, thereby further tightening the device to be fixed; (3) When the experiment is over, push and pull the push rod to reset the buckle valve, and under the action of the guide rail, the iron hoop is separated, thereby separating the two buckle valves.

8. The fixing method of the electric rotating buckle fixing device of the rock triaxial testing instrument according to claim 7 is characterized in that: The optical signal receiver cooperates with the protrusion of the iron ring, and the thickness of the protrusion of the iron ring is just enough to fill the recessed optical signal receiver, thereby blocking the optical signal receiver from sensing light.

9. The fixing method of the electric rotating buckle fixing device of the rock triaxial testing instrument according to claim 8 is characterized in that: When the optical signal receiver senses no light, it transmits a signal to the signal prompt light, indicating that the iron hoop has been docked. The control device controls the motor to work, thereby driving the motor gear to rotate. The motor gear drives the direction of the buckle valve crack to be offset from the direction of the iron hoop crack, thereby achieving a secondary fixation effect.

10. The fixing method of the electric rotating buckle fixing device of the rock triaxial testing instrument according to claim 9 is characterized in that: The buckle valve can rotate on the iron hoop, and the motor gear is matched with the tooth groove and the empty groove; the diameter of the circle formed by the buckle valve is matched with the outer diameter of the component to be fixed.

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