Device for improving sand layer rock core recovery rate
By using multiple telescopic fastening components in the drill bit structure to apply elastic clamping force and sealing gaps to the core, the problem of crushing and leakage of the sand layer core during core extraction is solved, improving the adoption rate and simplifying the Drill maintenance and replacement process.
Patent Information
- Application Number
- CN202420502677.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The core of the gravel-containing sandstone layer is prone to break during the core extraction process, resulting in a decrease in the adoption rate and the core fragments leak out through the drill barrel gap.
A device including a drill barrel body and a drill bit structure is designed. A plurality of telescopic fastening components are provided on the drill bit structure, and clamping forces are applied to the core through the elastic unit and the gap is blocked to prevent fragments from leaking.
It effectively improves the adoption rate of the sand layer core, ensures that the core does not fall off during the removal process, and facilitates the disassembly and maintenance of the drill bit structure, and replaces failed parts in a timely manner.
Smart Images
Figure CN222162538U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of sand layer core recovery equipment, and more specifically, to a device for improving the recovery rate of sand layer cores. Background Art
[0002] Coring refers to the process of sampling rock from the drilled strata in order to understand the geological conditions of the strata. The coring process usually uses a drilling rig and a coring drill bit, and through rotary drilling or impact drilling, the core is pushed into the inside of the drill bit to achieve core sampling.
[0003] The gravel-bearing sandstone layer is mainly composed of gravel. The core of the gravel-bearing sandstone layer is relatively fragile. When the cylindrical core that enters the drill barrel is taken out of the borehole and collides with the borehole, the core in the drill bit is easily broken, causing the broken sand layer core fragments to leak out of the drill barrel through the gap between the core and the drill barrel, resulting in a decrease in the sand layer core recovery rate. Summary of the invention
[0004] The utility model solves the problem of providing a device for improving the recovery rate of sand layer cores, preventing the leakage of broken pieces falling off the cores, and effectively improving the recovery rate of sand layer cores.
[0005] The utility model is realized by the following technical solutions:
[0006] A device for improving the core recovery rate of sand layers comprises a drill barrel, a drill bit structure is arranged at the end of the drill barrel, the drill bit structure comprises a drill bit, an inner ring is connected to the top of the drill bit, and a plurality of telescopic fastening components are evenly arranged on the inner ring wall of the drill bit;
[0007] The telescopic fastening component comprises a horizontal cylinder seat, an end cover shell is slidably covered at one end of the opening of the horizontal cylinder seat, a transition chamfer is provided at the bottom end of the end cover shell, a prompt groove is provided at the top of the end cover shell, a warning lamp bead and a transparent plate are respectively connected in the prompt groove, a power supply battery groove is also provided on the bottom wall of the prompt groove, a power supply battery is provided in the power supply battery groove, and a switch button is also provided at the top of the end cover shell;
[0008] An elastic unit is provided inside the horizontal cylinder seat, and the elastic unit includes a strip support, a guide rod having one end connected to the inner cavity side wall of the end cover shell is inserted through the strip support, a contact end piece B is connected to the other end of the guide rod, and a contact end piece A is connected to the inner cavity side wall of the horizontal cylinder seat, and a telescopic spring is sleeved on the outer periphery of the guide rod;
[0009] The elastic unit drives the end cover to apply an elastic clamping force to the side wall of the rock core drilled into the drill bit structure and to seal the gap between the rock core and the side wall of the inner cavity of the drill bit.
[0010] The transparent plate is located above the warning lamp bead, and the transparent plate does not protrude from the prompt groove.
[0011] One end of the telescopic spring is connected to the inner cavity wall of the end cover shell, and the other end is connected to the strip support.
[0012] The contact end piece A is between the strip support and the contact end piece B. When the telescopic spring is in the initial state, the contact end piece B and the contact end piece A are tightly attached together.
[0013] The switch button does not protrude from the top surface of the end cover.
[0014] A receiving chamber is provided on the inner ring wall of the drill bit at a position corresponding to each telescopic fastening component, in which the end cover shell can be slidably connected;
[0015] Each end cover is slidably connected to its corresponding accommodation chamber;
[0016] One end of the horizontal cylinder seat away from the end cover shell is connected to the side wall of the corresponding accommodation bin.
[0017] The guide rod is a rectangular parallelepiped structure.
[0018] As an optional solution of the technical solution of this application document, when the contact terminal piece A contacts the contact terminal piece B, the series circuit consisting of the warning lamp bead, the power supply battery, the switch button, the contact terminal piece A and the contact terminal piece B is connected.
[0019] The bottom of the drill tube body is provided with a ring groove for inserting the inner ring, the side wall of the drill tube body is threadedly penetrated with a connecting screw, and the side wall of the inner ring is provided with a connecting screw groove for threading the connecting screw.
[0020] Compared with the prior art, the utility model has the following beneficial effects:
[0021] 1. The utility model applies an elastic clamping force to the side wall of the sand core drilled into the inside of the drill barrel by means of a plurality of circularly arranged telescopic fastening components arranged in a row in the drill barrel structure. In this way, the sand core in the drill barrel can be clamped and fixed during the process of taking the drill barrel out of the borehole to prevent it from falling out of the inside of the drill barrel; and the gap between the core and the side wall of the inner cavity of the drill bit is blocked to prevent the fragments falling off the core from leaking out of the inside of the drill barrel through the gap between the core and the side wall of the inner cavity of the drill bit, thereby effectively improving the recovery rate of the sand core by the device.
[0022] 2. In the utility model, when the connecting screw is disengaged from the connecting screw groove on the embedded ring, it is convenient for the operator to disassemble the drill bit structure from the drill barrel, so that when the drill bit structure is severely worn or needs maintenance, the operator can easily disassemble and replace it or disassemble and maintain it.
[0023] 3. When the utility model is in use, it is necessary to regularly disassemble and maintain the drill bit structure. After the drill bit structure is removed from the drill barrel, the switch buttons on the telescopic fastening components in the drill bit structure are turned on one by one. When the switch buttons are turned on, the warning lamp beads on the corresponding telescopic fastening components light up, indicating that the telescopic fastening components can work normally; when the switch buttons are turned on, if it is found that the warning lamp beads in the telescopic fastening components are still off, it means that the telescopic fastening components have failed and need to be replaced in time to ensure the effectiveness of the device in taking sand layer cores. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 The present invention is a schematic diagram of the overall structure of a device for improving the recovery rate of sand cores disclosed in a preferred embodiment of the present application.
[0025] Figure 2 The cross-sectional structural diagram of the drill bit structure in the device for improving the sand layer core recovery rate disclosed in a preferred embodiment of the present application is shown.
[0026] Figure 3 This is a schematic structural diagram of a telescopic fastening component in a device for improving the recovery rate of sand layer cores disclosed in a preferred embodiment of the present application.
[0027] Figure 4 A top view of a telescopic fastening component in a device for improving the recovery rate of sand layer cores disclosed in a preferred embodiment of the present application.
[0028] Explanation of the numbers in the figure: 1. Drill barrel; 2. Connecting screws; 3-1. Drill bit; 3-2. End cover; 3-3. Transition chamfer; 3-4. Inlaid ring; 3-5. Horizontal barrel seat; 3-6. Warning lamp bead; 3-7. Transparent plate; 3-8. Power supply battery; 3-9. Switch button; 4-1. Telescopic spring; 4-2. Contact terminal piece A; 4-3. Contact terminal piece B. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.
[0030] Reference Figures 1 to 4 A device for improving the core recovery rate of sand layers includes a drill barrel 1, a drill bit structure is arranged at the end of the drill barrel 1, the drill bit structure includes a drill bit 3-1, an inner ring 3-4 is connected to the top of the drill bit 3-1, and a plurality of telescopic fastening components are evenly arranged on the inner ring wall of the drill bit 3-1;
[0031] The telescopic fastening component includes a horizontal cylinder seat 3-5, an end cover 3-2 is slidably covered at one end of the opening of the horizontal cylinder seat 3-5, a transition chamfer 3-3 is provided at the bottom end of the end cover 3-2, a prompt groove is provided on the top of the end cover 3-2, and a warning lamp bead 3-6 and a transparent plate 3-7 are respectively connected in the prompt groove, and the transparent plate 3-7 is made of a transparent acrylic material or a transparent tempered glass material, a power supply battery groove is also provided on the bottom wall of the prompt groove, and a power supply battery 3-8 is provided in the power supply battery groove, and a switch button 3-9 is also provided on the top of the end cover 3-2; an elastic unit is provided inside the horizontal cylinder seat 3-5;
[0032] The elastic unit includes a strip support, a guide rod having one end connected to the inner cavity side wall of the end cover 3-2 is inserted through the strip support, a contact end piece B4-3 is connected to the other end of the guide rod, a contact end piece A4-2 is connected to the inner cavity side wall of the horizontal cylinder seat 3-5, and a telescopic spring 4-1 is sleeved on the outer periphery of the guide rod;
[0033] The elastic unit drives the end cover 3-2 to apply an elastic clamping force to the side wall of the core drilled into the drill bit structure and to seal the gap between the core and the inner side wall of the drill bit 3-1 to prevent the fragments that fall off the core from leaking out of the drill barrel 1 through the gap between the core and the inner side wall of the drill bit 3-1.
[0034] The transparent plate 3-7 is located above the warning lamp bead 3-6, and the transparent plate 3-7 does not protrude from the prompting groove. One end of the telescopic spring 4-1 is connected to the inner cavity wall of the end cover shell 3-2, and the other end is connected to the strip support.
[0035] The contact end piece A4-2 is between the strip support and the contact end piece B4-3. When the telescopic spring 4-1 is in the initial state, the contact end piece B4-3 and the contact end piece A4-2 are tightly attached together. The switch button 3-9 does not protrude from the top surface of the end cover 3-2.
[0036] A storage chamber in which the end cover 3-2 can be slidably connected is provided on the inner ring wall of the drill bit 3-1 at a position corresponding to the position of each telescopic fastening component; each end cover 3-2 is slidably connected to its corresponding storage chamber; the end of the horizontal cylinder seat 3-5 away from the end cover 3-2 is connected to the side wall of the corresponding storage chamber.
[0037] Specifically, the guide rod is a rectangular parallelepiped structure.
[0038] When the contact end piece A4-2 contacts the contact end piece B4-3, the series circuit consisting of the warning lamp bead 3-6, the power supply battery 3-8, the switch button 3-9, the contact end piece A4-2 and the contact end piece B4-3 is connected. The device can apply an elastic clamping force to the side wall of the sand core drilled into the drill barrel 1 through a plurality of circularly arranged telescopic fastening components arranged in a row in the drill barrel structure, so that the sand core in the drill barrel 1 can be clamped and fixed during the process of removing the drill barrel 1 from the borehole to prevent it from falling out of the drill barrel 1;
[0039] The telescopic fastening components arranged in a circular row in the drill bit structure can also seal the gap between the core and the inner cavity side wall of the drill bit 3-1 to prevent the fragments that fall off the core from leaking out from the inside of the drill barrel 1 through the gap between the core and the inner cavity side wall of the drill bit 3-1, effectively improving the recovery rate of the sand layer core of the device.
[0040] Reference Figure 1 and Figure 2 The embodiment of the present application provides a device for improving the core recovery rate of sand layers. A ring groove is provided at the bottom of the drill barrel body 1 for inserting an inner ring 3-4 therein. A connecting screw 2 is inserted through a thread on the side wall of the drill barrel body 1. A connecting screw groove is provided on the side wall of the inner ring 3-4 for threaded connection of the connecting screw 2 therein.
[0041] The operator loosens the connecting screw 2 by means of a professional tool such as an electric screwdriver. When the connecting screw 2 is disengaged from the connecting screw groove on the embedded ring 3-4, it is convenient for the operator to disassemble the drill bit structure from the drill barrel body 1. Thus, when the drill bit structure is severely worn or needs maintenance, the operator can disassemble and replace it or disassemble and perform maintenance on it.
[0042] When the telescopic spring 4-1 in the elastic unit suffers metal fatigue due to long-term load, the telescopic spring 4-1 is prone to spring failure and loses its original elasticity, which in turn causes the elastic unit to fail, affecting the normal operation of the telescopic fastening component. Therefore, the device needs to regularly disassemble and maintain the drill bit structure when in use. After the drill bit structure is disassembled from the drill barrel 1, the switch buttons 3-9 on the telescopic fastening components in the drill bit structure are turned on one by one. When the switch buttons 3-9 are turned on, the warning lamp beads 3-6 on the corresponding telescopic fastening components light up, indicating that the telescopic fastening component can work normally. On the contrary, when the switch button 3-9 is turned on, it is found that the warning lamp beads 3-6 in the telescopic fastening component are still in an off state, indicating that the telescopic fastening component has failed and needs to be replaced in time.
[0043] The above embodiments are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential additions and substitutions made by those skilled in the art based on the technical features of the present invention are within the protection scope of the present invention.
Claims
1. A device for improving the recovery rate of sand layer cores, characterized by: The drill barrel (1) comprises a drill bit structure provided at the end of the drill barrel (1), the drill bit structure comprising a drill bit (3-1), an inner ring (3-4) connected to the top of the drill bit (3-1), and a plurality of telescopic fastening components evenly provided on the inner ring wall of the drill bit (3-1); The telescopic fastening component comprises a horizontal cylinder seat (3-5), and an end cover (3-2) is slidably covered at one end of the opening of the horizontal cylinder seat (3-5); a transition chamfer (3-3) is provided at the bottom end of the end cover (3-2), and a prompt groove is provided at the top of the end cover (3-2), and a warning lamp bead (3-6) and a transparent plate (3-7) are respectively connected in the prompt groove, and a power supply battery groove is also provided on the bottom wall of the prompt groove; a power supply battery (3-8) is provided in the power supply battery groove, and a switch button (3-9) is also provided at the top of the end cover (3-2); An elastic unit is provided inside the horizontal cylinder seat (3-5), and the elastic unit comprises a strip support, a guide rod having one end connected to the inner cavity side wall of the end cover shell (3-2) is inserted through the strip support, a contact end piece B (4-3) is connected to the other end of the guide rod, a contact end piece A (4-2) is connected to the inner cavity side wall of the horizontal cylinder seat (3-5), and a telescopic spring (4-1) is sleeved on the outer periphery of the guide rod; The elastic unit drives the end cover (3-2) to apply an elastic clamping force to the side wall of the rock core drilled into the drill bit structure, and seals the gap between the rock core and the inner cavity side wall of the drill bit (3-1).
2. The device for improving the recovery rate of sand layer core according to claim 1, characterized in that: The transparent plate (3-7) is located above the warning lamp bead (3-6), and the transparent plate (3-7) does not protrude from the prompt groove.
3. The device for improving the recovery rate of sand layer core according to claim 1, characterized in that: One end of the telescopic spring (4-1) is connected to the inner cavity wall of the end cover shell (3-2), and the other end is connected to the strip support.
4. The device for improving the recovery rate of sand layer core according to claim 3 is characterized in that: The contact end piece A (4-2) is located between the strip support and the contact end piece B (4-3). When the telescopic spring (4-1) is in an initial state, the contact end piece B (4-3) and the contact end piece A (4-2) are tightly attached together.
5. The device for improving the recovery rate of sand layer core according to claim 1, characterized in that: The switch button (3-9) does not protrude from the top surface of the end cover shell (3-2).
6. The device for improving the recovery rate of sand layer core according to claim 1, characterized in that: A receiving chamber is provided on the inner ring wall of the drill bit (3-1) at a position corresponding to each telescopic fastening component, into which the end cover (3-2) can be slidably connected; Each of the end covers (3-2) is slidably connected to a corresponding storage bin; One end of the horizontal cylinder seat (3-5) away from the end cover shell (3-2) is connected to the side wall of the corresponding accommodating bin.
7. The device for improving the recovery rate of sand layer core according to claim 1, characterized in that: The guide rod is a rectangular parallelepiped structure.
8. The device for improving the recovery rate of sand layer core according to claim 4, characterized in that: When the contact terminal piece A (4-2) contacts the contact terminal piece B (4-3), a series circuit consisting of the warning lamp bead (3-6), the power supply battery (3-8), the switch button (3-9), the contact terminal piece A (4-2) and the contact terminal piece B (4-3) is connected.
9. The device for improving the recovery rate of sand layer core according to claim 1, characterized in that: The bottom of the drill tube body (1) is provided with a ring groove into which the inner ring (3-4) can be inserted, the side wall of the drill tube body (1) is threadedly penetrated with a connecting screw (2), and the side wall of the inner ring (3-4) is provided with a connecting screw groove into which the connecting screw (2) can be threadedly connected.