Corrosion-resistant and pressure-resistant core holder
By introducing adjustment and positioning devices into the core holder, the problem of inconvenient joint cleaning was solved, corrosion resistance was improved and the risk of fluid leakage was reduced, thus achieving the pressure resistance and corrosion resistance of the core holder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SHILI PETROLEUM SCI RES INSTR CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-05-05
AI Technical Summary
Existing core holders are inconvenient to clean the joints, resulting in reduced corrosion resistance.
A corrosion-resistant and pressure-resistant core holder was designed, which adopts an adjustment device and a positioning device. The drive motor drives the gear to drive the rack and pinion slider, which facilitates the disassembly and cleaning of the joint. The limit device prevents the slider from falling off, thus improving corrosion resistance.
This technology enables easy cleaning of the joint, prevents residual fluid from corroding the inner wall, improves the corrosion resistance of the core holder, and reduces the risk of fluid leakage.
Smart Images

Figure CN224202980U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of core clamping device technology, and in particular to a corrosion-resistant and pressure-resistant core clamping device. Background Technology
[0002] Core holders are instruments used in laboratories to hold, protect, and seal the cylindrical or end faces of rock samples. They are mainly used to determine the seepage characteristics of rock samples or to conduct displacement tests, and are an important auxiliary component in the development of experimental instruments and devices.
[0003] When workers need to test the core, they connect the guide tube to both ends of the core holder so that the core holder can test the core. However, existing core holders usually fix the connector and end cap together, which makes it inconvenient for workers to clean the connector, and thus reduces the corrosion resistance of the core holder. Utility Model Content
[0004] The purpose of this invention is to solve the problem of reduced corrosion resistance in existing core holders, and to propose a corrosion-resistant and pressure-resistant core holder.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a corrosion-resistant and pressure-resistant core clamp, comprising a clamp body, a first support frame mounted on the surface of the clamp body, connectors placed at both ends of the clamp body, a sealing gasket mounted on a disc on the surface of the connector, the sealing gasket being placed on the clamp body, adjustment devices provided at both ends of the clamp body, the adjustment devices including support sleeves, the support sleeves being fixedly connected to both ends of the clamp body, a slider being slidably connected inside the support sleeves, a placement block being fixedly connected to one side of the slider, a storage sleeve being fixedly connected to the surface of the connector, and the placement block... The slider is placed inside the storage sleeve. A rack is fixedly connected to one side of the slider. The rack is slidably connected to the inner side of the support sleeve. A drive motor is fixedly connected to the surface of the support sleeve. A gear is fixedly connected to the drive end of the drive motor. The gear meshes with the surface of the rack. A limit component is provided on the surface of the support sleeve. The limit component includes a guide groove. The guide groove is opened on the surface of the support sleeve. The slider is slidably connected to the inside of the guide groove. The guide groove can cooperate with the support sleeve to guide the slider to slide. The main body of the clamp is made of nickel-based alloy. The sealing gasket installed on the disc on the surface of the connector is not shown in the figure.
[0006] Preferably, the surface of the support sleeve is provided with a positioning device, the positioning device including a second support frame, the second support frame being fixedly connected to the upper surface of the support sleeve, the second support frame being located above the slider, and the second support frame being able to cooperate with the support sleeve to achieve the purpose of fixing the second support frame.
[0007] Preferably, the second support frame has a slidingly connected insert rod inside, the insert rod being located on both sides of the joint, and the insert rod can cooperate with the second support frame to guide the insert rod to slide.
[0008] Preferably, the upper surface of the slider is provided with a storage hole, and the insertion rod is inserted into the inside of the storage hole. The storage hole can cooperate with the slider to achieve the purpose of storing the insertion rod.
[0009] Preferably, an adjusting block is fixedly connected to the top of the insertion rod. The adjusting block is located above the second support frame and can cooperate with the insertion rod to facilitate the worker's adjustment of the insertion rod's retraction.
[0010] Preferably, a pull spring is fixedly connected between the adjusting block and the second support frame. The pull spring is located above the slider and can cooperate with the adjusting block and the second support frame to tighten the insertion rod.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] In this invention, by setting an adjustment device, when the worker needs to clean the fluid residue inside the joint, the worker adjusts the positioning device, starts the drive motor, the drive motor drives the gear, the gear pushes the rack, the rack drives the slider, the slider is guided by the guide groove and the support sleeve, the slider drives the placement block to detach from the storage sleeve, and the worker removes the joint from both ends of the clamp body, making it convenient for the worker to clean the joint. By setting an adjustment device, it is possible to effectively facilitate the worker to clean the fluid residue inside the joint, avoid the fluid residue from corroding the inner wall of the joint for a long time, and thus improve the corrosion resistance of the core clamp.
[0013] In this invention, by setting a positioning device, when the worker needs to limit the slider, the drive motor is controlled to adjust the slider to reset. When the slider slides to the designated position, the adjusting block is released, the spring is pulled to pull the adjusting block, the adjusting block pushes the insertion rod, and the insertion rod is inserted into the receiving hole on the surface of the slider. By setting a positioning device, the slider can be effectively limited, avoiding instability of the joint, thereby reducing the problem of fluid leakage between the joint and the clamp body. Attached Figure Description
[0014] Figure 1 This utility model provides a three-dimensional structural diagram of a corrosion-resistant and pressure-resistant core clamp.
[0015] Figure 2 This utility model provides a schematic diagram of the adjustment device structure for an anti-corrosion and pressure-resistant core clamp.
[0016] Figure 3This utility model proposes a corrosion-resistant and pressure-resistant core clamp. Figure 2 Enlarged structural diagram at point A in the middle;
[0017] Figure 4 This utility model provides a schematic diagram of the positioning device structure for a corrosion-resistant and pressure-resistant core clamp.
[0018] Figure 5 This utility model proposes a corrosion-resistant and pressure-resistant core clamp. Figure 4 Enlarged structural diagram at point B.
[0019] Legend:
[0020] 1. Clamp body; 2. First support frame; 3. Adjustment device; 31. Storage sleeve; 32. Placement block; 33. Slider; 34. Support sleeve; 35. Rack; 36. Drive motor; 37. Gear; 38. Guide groove; 4. Positioning device; 41. Adjustment block; 42. Pull spring; 43. Second support frame; 44. Insert rod; 45. Storage hole; 5. Connector. Detailed Implementation
[0021] Please see Figures 1-5 This utility model provides a technical solution: a corrosion-resistant and pressure-resistant core clamp, including a clamp body 1, a first support frame 2 installed on the surface of the clamp body 1, connectors 5 placed at both ends of the clamp body 1, a sealing gasket installed on the disc on the surface of the connector 5, the sealing gasket being placed on the clamp body 1, and an adjustment device 3 provided at both ends of the clamp body 1.
[0022] The specific settings and functions of the adjustment device 3 and the positioning device 4 will be explained in detail below.
[0023] In this embodiment: the adjusting device 3 includes a support sleeve 34, which is fixedly connected to both ends of the clamp body 1. A slider 33 is slidably connected inside the support sleeve 34. A placement block 32 is fixedly connected to one side of the slider 33. A storage sleeve 31 is fixedly connected to the surface of the connector 5. The placement block 32 is placed inside the storage sleeve 31. A rack 35 is fixedly connected to one side of the slider 33. The rack 35 is slidably connected to the inner side of the support sleeve 34. A drive motor 36 is fixedly connected to the surface of the support sleeve 34. A gear 37 is fixedly connected to the drive end of the drive motor 36. The gear 37 meshes with the surface of the rack 35. A limit component is provided on the surface of the support sleeve 34.
[0024] Specifically, the limiting component includes a guide groove 38, which is formed on the surface of the support sleeve 34. The slider 33 is slidably connected to the inside of the guide groove 38. The guide groove 38 can cooperate with the support sleeve 34 to guide the slider 33 to slide. The clamp body 1 is made of nickel-based alloy. The sealing gasket mounted on the disc on the surface of the connector 5 is not shown in the figure.
[0025] Specifically, the surface of the support sleeve 34 is provided with a positioning device 4, which includes a second support frame 43. The second support frame 43 is fixedly connected to the upper surface of the support sleeve 34 and is located above the slider 33.
[0026] In this embodiment, the second support frame 43 can cooperate with the support sleeve 34 to fix the second support frame 43.
[0027] In this embodiment: the second support frame 43 is slidably connected to the insertion rod 44, which is located on both sides of the connector 5. The insertion rod 44 can cooperate with the second support frame 43 to guide the insertion rod 44 to slide.
[0028] Specifically, the upper surface of the slider 33 is provided with a storage hole 45, and the insertion rod 44 is inserted into the inside of the storage hole 45.
[0029] In this embodiment, the receiving hole 45 can cooperate with the slider 33 to achieve the purpose of receiving the insertion rod 44.
[0030] Specifically, an adjustment block 41 is fixedly connected to the top of the insertion rod 44. The adjustment block 41 is located above the second support frame 43. The adjustment block 41 can cooperate with the insertion rod 44 to facilitate the worker's adjustment of the extension of the insertion rod 44.
[0031] Specifically, a pull spring 42 is fixedly connected between the adjusting block 41 and the second support frame 43, and the pull spring 42 is located above the slider 33.
[0032] In this embodiment, the pull spring 42 can cooperate with the adjusting block 41 and the second support frame 43 to achieve the purpose of tightening the insertion rod 44.
[0033] Working principle: By setting the adjustment device 3, when the worker needs to clean the fluid residue inside the connector 5, the worker adjusts the positioning device 4, starts the drive motor 36, the drive motor 36 drives the gear 37, the gear 37 pushes the rack 35, the rack 35 drives the slider 33, the slider 33 is guided by the guide groove 38 and the support sleeve 34, the slider 33 drives the placement block 32 to disengage from the storage sleeve 31, and the worker removes the connector 5 from both ends of the clamp body 1, making it convenient for the worker to clean the connector 5. By setting the adjustment device 3, it is possible to effectively facilitate the worker to clean the fluid residue inside the connector 5 and avoid the fluid residue from accumulating in the long term. Time corrodes the inner wall of the joint 5, thereby improving the corrosion resistance of the core holder. In addition, by setting the positioning device 4, when the operator needs to limit the slider 33, the drive motor 36 is controlled to adjust the slider 33 to reset. When the slider 33 slides to the designated position, the adjusting block 41 is released, the spring 42 is pulled to pull the adjusting block 41, the adjusting block 41 pushes the insertion rod 44, and the insertion rod 44 is inserted into the receiving hole 45 on the surface of the slider 33. By setting the positioning device 4, the slider 33 can be effectively limited, avoiding instability of the joint 5, thereby reducing the problem of fluid leakage between the joint 5 and the holder body 1.
Claims
1. A corrosion-resistant and pressure-resistant core clamp, comprising a clamp body (1), characterized in that: The surface of the clamp body (1) is equipped with a first support frame (2), and the two ends of the clamp body (1) are provided with connectors (5). A sealing gasket is installed on the disc on the surface of the connector (5), and the sealing gasket is placed on the clamp body (1). The clamp body (1) is provided with adjustment devices (3) at both ends. The adjustment device (3) includes a support sleeve (34) which is fixedly connected to both ends of the clamp body (1). The support sleeve (34) is slidably connected to a slider (33), and a placement block (32) is fixedly connected to one side of the slider (33). A storage sleeve (31) is fixedly connected to the surface of the connector (5). The placement block (32) is placed inside the storage sleeve (31). A rack (35) is fixedly connected to one side of the slider (33). The rack (35) is slidably connected to the inner side of the support sleeve (34). A drive motor (36) is fixedly connected to the surface of the support sleeve (34). A gear (37) is fixedly connected to the drive end of the drive motor (36). The gear (37) meshes with the surface of the rack (35). A limit component is provided on the surface of the support sleeve (34).
2. The corrosion-resistant and pressure-resistant core clamp according to claim 1, characterized in that: The limiting component includes a guide groove (38) which is formed on the surface of the support sleeve (34), and the slider (33) is slidably connected to the inside of the guide groove (38).
3. The corrosion-resistant and pressure-resistant core clamp according to claim 1, characterized in that: The surface of the support sleeve (34) is provided with a positioning device (4), the positioning device (4) includes a second support frame (43), the second support frame (43) is fixedly connected to the upper surface of the support sleeve (34), and the second support frame (43) is located above the slider (33).
4. The corrosion-resistant and pressure-resistant core clamp according to claim 3, characterized in that: The second support frame (43) has a sliding connection to a plug rod (44), which is located on both sides of the connector (5).
5. The corrosion-resistant and pressure-resistant core clamp according to claim 4, characterized in that: The upper surface of the slider (33) is provided with a storage hole (45), and the insertion rod (44) is inserted into the inside of the storage hole (45).
6. The corrosion-resistant and pressure-resistant core clamp according to claim 5, characterized in that: An adjusting block (41) is fixedly connected to the top of the insert (44), and the adjusting block (41) is located above the second support frame (43).
7. The corrosion-resistant and pressure-resistant core clamp according to claim 6, characterized in that: A pull spring (42) is fixedly connected between the adjusting block (41) and the second support frame (43), and the pull spring (42) is located above the slider (33).