Wear-resistant protective sleeve for marine logging instrument

Abstract

The wear-resistant protective sleeve for the marine logging instrument comprises a protective shell and a protective head which are detachably connected through a plurality of fixing structures, and the protective shell is sleeved with a dismounting structure of the protective head. The protective shell is arranged outside the logging main body in a sleeving manner; the fixing structure comprises a clamping rod fixed to the bottom face of the protection head and a clamping groove formed in the top face of the protection shell. The dismounting structure comprises a rotating sleeve arranged outside the protective shell in a sleeving mode, a pull rod arranged in the transition groove and a sliding plate fixed to the end face of the pull rod. By arranging the protective assembly, the fixing of the protective sleeve can adapt to seawater with different depths, and when the logging instrument needs to be repaired and maintained and the protective sleeve which is worn for a long time needs to be replaced, the protective sleeve can be conveniently and rapidly disassembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of logging instruments, and particularly relates to an abrasion-resistant protective sleeve for marine logging instruments. Background Art

[0002] Marine logging instruments are special equipment for marine geophysical logging, mainly used for the exploration and development of marine oil and gas. Logging is an indispensable part of oil exploration and development. Through logging, important information such as the physical properties, porosity, and permeability of formation rocks can be obtained, and then the reserves and distribution of oil and gas can be evaluated. Marine logging instruments are usually installed on drilling platforms or floating drilling devices, and the instruments are lowered into the boreholes on the seabed through cables to measure the formation. These instruments can measure parameters such as the conductivity, acoustic velocity, and radioactivity of the formation, and obtain various physical characteristics of the formation through data processing and analysis.

[0003] Most of the existing marine logging instruments firmly paste the abrasion-resistant protective sleeve on the instrument surface through specially designed adhesives. In actual use, this fixing method has limitations. Seawater at different depths has different characteristics of acidity, salinity, and pressure, which are extremely likely to cause the adhesive to fail, resulting in the protective sleeve being unable to effectively protect the logging instrument. Moreover, when the logging instrument needs to be repaired and maintained and the long-term worn protective sleeve needs to be replaced, it is difficult to disassemble the protective sleeve. Summary of the Utility Model

[0004] The utility model is proposed to solve the problems existing in the prior art, and its purpose is to provide an abrasion-resistant protective sleeve for marine logging instruments.

[0005] The utility model is realized through the following technical solutions:

[0006] An abrasion-resistant protective sleeve for marine logging instruments includes a protective housing and a protective head detachably connected through a plurality of fixing structures, and a disassembly structure for sleeving the protective head outside the protective housing; the protective housing is sleeved outside the logging main body; the fixing structure includes a clamping rod fixed to the bottom surface of the protective head and a clamping groove formed on the top surface of the protective housing; the disassembly structure includes a rotating sleeve sleeved outside the protective housing, a pull rod arranged in a transition groove, and a sliding plate fixed to the end face of the pull rod.

[0007] In the above technical solution, a notch groove is formed on the inner side wall of the clamping rod; a clamping plate is arranged inside the clamping groove. After the clamping rod is inserted into the clamping groove, the clamping plate is inserted into the notch groove through rotation.

[0008] In the above technical solution, the fixing structure further includes a limiting block, a spring, and a transition groove formed on the top surface of the protective housing; the transition groove is communicated with the clamping groove, one end of the limiting block is placed in the transition groove, and the other end extends into the clamping groove. One end of the spring is fixed to the outer side wall of the limiting block, and the other end is fixed to the groove wall of the transition groove; the end surface of the limiting block close to the clamping groove is an inclined surface.

[0009] In the above technical solution, the rotating sleeve is formed with the same number of disassembly grooves as the fixing structure. The inner side wall of the disassembly groove is an inclined surface, and a through port is formed on the inclined surface. The through port is communicated with the transition groove. The pull rod passes through the spring and one end is fixed to the limiting block. The sliding plate is placed in the disassembly groove.

[0010] In the above technical solution, a sealing gasket is provided between the protective housing and the protective head, and the sealing gasket is fixed to the bottom surface of the protective head.

[0011] In the above technical solution, a groove is formed on the bottom surface of the protective head, and a soft pad is arranged in the groove. The soft pad is attached to the end of the logging main body.

[0012] In the above technical solution, the logging main body is cylindrical. One end of the logging main body extends out of the protective housing, and the extending end is connected to an external cable through a connector.

[0013] The beneficial effects of the present utility model are:

[0014] The present utility model provides a wear-resistant protective sleeve for a marine logging instrument. By setting a protection component, the fixing of the protective sleeve of the device can adapt to seawater at different depths, and when it is necessary to repair and maintain the logging instrument and replace the protective sleeve with long-term wear, it is convenient to quickly disassemble the protective sleeve. Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is a sectional structural diagram of the logging main body of the present utility model;

[0017] Figure 3 is Figure 2 the enlarged structural diagram at A in

[0018] Figure 4 is an exploded structural diagram of the protective head and the protective housing of the present utility model;

[0019] Figure 5 is a sectional structural diagram of the protective housing of the present utility model;

[0020] Figure 6 is Figure 5 the enlarged structural diagram at B in

[0021] Among them:

[0022] 1. Protective housing; 2. Protective head; 3. Sealing gasket; 4. Clamping rod; 41. Notch groove; 5. Clamping groove; 6. Clamping plate; 7. Limiting block; 8. Spring; 9. Transition groove; 10. Rotating sleeve; 11. Pull rod; 12. Slide plate; 13. Disassembly groove; 131. Through port; 14. Soft pad; 15. Logging main body; 16. Connector.

[0023] For those of ordinary skill in the art, without creative efforts, other relevant drawings can be obtained based on the above drawings. Detailed implementation mode

[0024] In order to enable those in the technical field to better understand the technical solution of the present utility model, the technical solution of the present utility model will be further described below in conjunction with the specification drawings and through specific implementation modes.

[0025] As Figures 1 to 6 shown, a wear-resistant protective sleeve for a marine logging instrument includes a protective housing 1 and a protective head 2 detachably connected through a plurality of fixing structures, and a disassembly structure for sleeving the protective head 2 outside the protective housing 1;

[0026] The protective housing 1 is sleeved outside the logging main body 15,

[0027] The fixing structure includes a clamping rod 4 fixed to the bottom surface of the protective head 2 and a clamping groove 5 formed on the top surface of the protective housing 1; the clamping rod 4 and the clamping groove 5 are both evenly distributed along the circumference and are arranged in one-to-one correspondence, and the two are inserted;

[0028] A notch groove 41 is formed on the inner side wall of the clamping rod 4;

[0029] A clamping plate 6 is arranged inside the clamping groove 5. After the clamping rod 4 is inserted into the clamping groove 5, the clamping plate 6 is rotated and inserted into the notch groove 41;

[0030] In this embodiment, the number of the clamping rods 4 and the clamping plates 6 is both two. The clamping rod 4 is rectangular, the clamping plate 6 is arc-shaped and spiral-shaped, and the bottom of the notch groove 41 is an arc surface. By rotating the protective head 2, the clamping rod 4 is driven to rotate in the clamping groove 5, and the notch groove 41 of the clamping rod 4 is clamped with the clamping plate 6, thereby completing the fixation of the protective head 2 and the protective housing 1.

[0031] The fixing structure further includes a limiting block 7, a spring 8 and a transition groove 9 formed on the top surface of the protective housing 1; the transition groove 9 is communicated with the clamping groove 5. One end of the limiting block 7 is placed in the transition groove 9, and the other end extends into the clamping groove 5. One end of the spring 8 is fixed to the outer side wall of the limiting block 7, and the other end is fixed to the groove wall of the transition groove 9; the end surface of the limiting block 7 close to the clamping groove 5 is an inclined surface;

[0032] In this embodiment, the number of the limiting blocks 7 and the springs 8 is two. The limiting blocks 7 are wedge-shaped. The transition groove 9 and the clamping groove 5 are in a communicating state. The limiting blocks 7 are pushed by the springs 8, so that part of the limiting blocks 7 are located in the clamping groove 5. Rotate the protective head 2 clockwise. The protective head 2 drives the clamping rod 4 to rotate in the clamping groove 5. The clamping rod 4 squeezes the inclined surface of the limiting block 7. The limiting block 7 slides into the transition groove 9. The spring 8 is deformed by the extrusion of the limiting block 7. Continuously rotate the protective head 2. The clamping rod 4 is clamped with the clamping plate 6, and under the guidance of the clamping plate 6, the clamping rod 4 moves vertically downward until one side of the clamping rod 4 fits against the inner wall of the clamping groove 5. The reaction force of the spring 8 pushes the limiting block 7 to move out of the clamping groove 5. The right-angle surface of the limiting block 7 clamps the clamping rod 4, so that the clamping rod 4 is fixed, avoiding the separation of the protective head 2 from the protective housing 1 caused by the reverse rotation of the protective head 2.

[0033] The disassembly structure includes a rotating sleeve 10 sleeved outside the protective housing 1, a pull rod 11 arranged in the transition groove 9, and a sliding plate 12 fixed to the end face of the pull rod 11.

[0034] The rotating sleeve 10 is formed with disassembly grooves 13 having the same number as the fixing structures. The inner side wall of the disassembly groove 13 is an inclined surface, and a through hole 131 is formed on the inclined surface. The through hole 131 communicates with the transition groove 9. The pull rod 11 passes through the spring 8, and one end of the pull rod 11 is fixed to the limiting block 7. The sliding plate 12 is placed in the disassembly groove 13.

[0035] In this embodiment, the rotating sleeve 10 is circular. By setting the rotating sleeve 10 to be disassembled from the outside of the protective housing 1, the sealing performance of the device is greatly improved. The pull rod 11 is located inside the spring 8 circle. The number of the pull rods 11 and the sliding plates 12 is two. The pull rod 11 is rectangular. One side of the sliding plate 2 is an inclined surface. Rotate the rotating sleeve 10 counterclockwise. The inclined surface of the disassembly groove 13 in the rotating sleeve 10 squeezes the inclined surface of the sliding plate 12. The sliding plate 12 moves horizontally under the extrusion. The sliding plate 12 drives the pull rod 11 to move horizontally. The pull rod 11 drives the limiting block 7 to slide into the transition groove 9. The spring 8 is deformed by the extrusion of the limiting block 7. And rotate the protective head 2 counterclockwise. The protective head 2 drives the clamping rod 4 to rotate until the clamping rod 4 is separated from the clamping plate 6. Stop rotating the rotating sleeve 10. The reaction force of the spring 8 pushes the limiting block 7 to move out of the transition groove 9. The limiting block 7 drives the pull rod 11 to move back to its original position. The pull rod 11 drives the sliding plate 12 to move back to its original position. The inclined surface of the sliding plate 12 squeezes the inclined surface of the disassembly groove. The rotating sleeve 10 rotates back to its original position.

[0036] In this embodiment, there is a sealing gasket 3 between the protective housing 1 and the protective head 2. The sealing gasket 3 is fixed to the bottom surface of the protective head 2.

[0037] The setting of the gasket 3 increases the sealing performance of the device. Rotate the protective head 2, and the protective head 2 drives the clamping rod 4 to rotate in the clamping groove 5. The clamping rod 4 is clamped with the clamping plate 6, and under the guidance of the clamping plate 6, the clamping rod 4 moves vertically downward. The clamping rod 4 drives the protective head 2 to move vertically, and the protective head 2 and the protective housing 1 squeeze the gasket 3, resulting in a better sealing effect.

[0038] A groove is formed on the bottom surface of the protective head 2, and a soft pad 14 is arranged in the groove. The soft pad 14 fits with the end of the logging body 15. After the protective head 2 and the protective housing 1 are fixed, the soft pad 14 fits with the logging body 15. By setting the soft pad 14, the anti-collision ability of the logging body 15 is improved.

[0039] The logging body 15 is cylindrical. One end of the logging body 15 extends out of the protective housing 1, and the extended end is connected to an external cable through a connector 16.

[0040] The protective housing 1 is cylindrical. The protective head 2 is connected to the disassembly structure through a fixing structure, and the protective head 2 is disassembled through the disassembly structure, so that the logging body 15 can be pulled out of the protective housing 1, which facilitates the disassembly of the protective housing 1.

[0041] The usage method of the present utility model:

[0042] During use, during installation, first rotate the protective head 2 clockwise. The protective head 2 drives the clamping rod 4 to rotate in the clamping groove 5. The clamping rod 4 squeezes the inclined surface of the limiting block 7, and the limiting block 7 slides into the transition groove 9. The spring 8 is deformed under the extrusion of the limiting block 7. Continuously rotate the protective head 2, and the clamping rod 4 is clamped with the clamping plate 6. Under the guidance of the clamping plate 6, the clamping rod 4 moves vertically downward until one side of the clamping rod 4 fits with the inner wall of the transition groove 9. The reaction force of the spring 8 pushes the limiting block 7 to move out of the transition groove 9, and the right-angle surface of the limiting block 7 clamps the clamping rod 4, so that the protective housing 1 and the protective head 2 are fixed. During disassembly, first rotate the rotating sleeve 10 counterclockwise. The inclined surface of the disassembly groove 13 in the rotating sleeve 10 squeezes the inclined surface of the sliding plate 12. The sliding plate 12 moves horizontally under the extrusion. The sliding plate 12 drives the pull rod 11 to move horizontally. The pull rod 12 drives the limiting block 7 to slide into the transition groove 9. The spring 8 is deformed under the extrusion of the limiting block 7. And rotate the protective head 2 counterclockwise. The protective head 2 drives the clamping rod 4 to rotate until the clamping rod 4 is separated from the clamping plate 6, thus completing the disassembly of the protective housing 1 and the protective head 2. Stop rotating the rotating sleeve 10. The reaction force of the spring 8 pushes the limiting block 7 to move out of the transition groove 9. The limiting block 7 drives the pull rod 11 to move back to its original position. The pull rod 11 drives the sliding plate 12 to move back to its original position. The inclined surface of the sliding plate 12 squeezes the inclined surface of the disassembly groove 13, and the rotating sleeve 10 rotates back to its original position.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0045] The applicant declares that the above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed by the present utility model fall within the protection scope and the disclosure scope of the present utility model.

Claims

1. A wear-resistant protective sleeve for a marine logging instrument, characterized in that: It includes a protective housing (1) and a protective head (2) detachably connected by a number of fixed structures, and a disassembly structure for sleeving the protective head (2) outside the protective housing (1); the protective housing (1) is sleeved outside the logging main body (15); the fixed structure includes a clamping rod (4) fixed to the bottom surface of the protective head (2) and a clamping groove (5) formed on the top surface of the protective housing (1); the disassembly structure includes a rotating sleeve (10) sleeved outside the protective housing (1), a pull rod (11) arranged in a transition groove (9), and a sliding plate (12) fixed to the end face of the pull rod (11).

2. The wear-resistant protective sleeve for a marine logging instrument according to claim 1, characterized in that: A notch groove (41) is formed on the inner side wall of the clamping rod (4); a clamping plate (6) is arranged inside the clamping groove (5). After the clamping rod (4) is inserted into the clamping groove (5), the clamping plate (6) is rotated and inserted into the notch groove (41).

3. The wear-resistant protective sleeve for a marine logging instrument according to claim 1, characterized in that: The fixed structure further includes a limiting block (7), a spring (8), and a transition groove (9) formed on the top surface of the protective housing (1); the transition groove (9) is communicated with the clamping groove (5). One end of the limiting block (7) is placed in the transition groove (9), and the other end extends into the clamping groove (5). One end of the spring (8) is fixed to the outer side wall of the limiting block (7), and the other end is fixed to the groove wall of the transition groove (9); the end face of the limiting block (7) close to the clamping groove (5) is an inclined surface.

4. The wear-resistant protective sleeve for a marine logging instrument according to claim 1, characterized in that: The rotating sleeve (10) is formed with disassembly grooves (13) having the same number as the fixed structures. The inner side wall of the disassembly groove (13) is an inclined surface, and a through port (131) is formed on the inclined surface. The through port (131) is communicated with the transition groove (9). The pull rod (11) passes through the spring (8), and one end is fixed to the limiting block (7), and the sliding plate (12) is placed in the disassembly groove (13).

5. The wear-resistant protective sleeve for marine logging instruments according to claim 1, wherein: A sealing gasket (3) is provided between the protective housing (1) and the protective head (2), and the sealing gasket (3) is fixed to the bottom surface of the protective head (2).

6. The wear-resistant protective sleeve for a marine logging instrument according to claim 1, characterized in that: A groove is formed on the bottom surface of the protective head (2), and a soft pad (14) is arranged in the groove. The soft pad (14) is attached to the end of the logging main body (15).

7. The wear-resistant protective sleeve for a marine logging instrument according to claim 1, wherein: The logging main body (15) is cylindrical. One end of the logging main body (15) extends out of the protective housing (1), and the extending end is connected to an external cable through a connector (16).

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