Safety protection device for mining intrinsic safety type resistivity logging instrument

Abstract

The safety protection device for the mining intrinsic safety type resistivity logging instrument comprises a placing base, protection cylinders are symmetrically arranged on the two sides, located on the two sides of a mine wellhead, of the lower end of the placing base, and the output ends of electric telescopic rods arranged in the protection cylinders are connected with the side edge of the lower end of a limiting top base. A logging instrument body is arranged in a placing through opening formed in the middle of the limiting top seat, the lower ends of connecting telescopic rods symmetrically arranged on the two sides of the lower end of the limiting top seat are connected with the upper end of a protection seat, and the protection seat is connected to the outer side of the lower end of the logging instrument body in a sleeving mode. According to the safety protection device for the mining intrinsic safety type resistivity logging instrument, the lower end of the logging instrument body is protected through the protection base, then the logging instrument body drives the protection base to synchronously move downwards to enter the interior of a mine wellhead under the matched use of an electric telescopic rod, a limiting top base and a connecting telescopic rod, and then the logging instrument body is driven to move downwards to enter the interior of the mine wellhead under the guiding rolling of a guiding rolling wheel. The logging instrument body is always located in the center of the interior of a mine wellhead, and the use protection effect on the logging instrument body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to well logging instruments, in particular to a safety protection device for an intrinsically safe resistivity well logging instrument for mining. Background Art

[0002] The intrinsically safe resistivity logging tool for mining is a resistivity measurement instrument designed specifically for use in mining environments. Utilizing advanced measurement technology, it accurately measures the resistivity of rocks and ores in mines, providing reliable data for mine geological exploration and resource development. It is suitable for a variety of mining environments, including metal mines, non-metallic mines, coal fields, and oil fields, meeting resistivity measurement requirements under diverse geological conditions.

[0003] After searching, we found that a typical well logging tool in the prior art is disclosed in publication number CN207598233U. The tool comprises a core shaft; an insulating sleeve disposed on the outer periphery of the core shaft and having a plurality of mounting grooves formed therein; and a plurality of electrode rings disposed in the mounting grooves in a one-to-one correspondence to ensure mutual insulation between adjacent electrode rings. This utility model solves the problem of poor insulation of the electrode rings in prior art well logging tools, which affects the operating stability of the logging tool.

[0004] To sum up, when using the existing logging instrument, it is manually placed vertically into the borehole. When the logging instrument is stable, measurement can begin. However, when the logging instrument is placed inside the borehole, if it accidentally touches the inner wall of the wellbore, the device will be damaged, affecting the measurement results and increasing maintenance costs. In view of the above problems, the existing equipment needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a safety protection device for an intrinsically safe resistivity logging instrument for mining, so as to solve the problem proposed in the above-mentioned background art that the existing logging instrument is manually placed vertically into the borehole when in use. When the logging instrument is stable, measurement can be started. However, when the logging instrument is placed inside the borehole, if it accidentally touches the inner wall of the wellbore, the device will be damaged, affecting the measurement results and increasing maintenance costs.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: a safety protection device for a mine intrinsically safe resistivity logging instrument, comprising a placement seat,

[0007] The placement seat is arranged at the upper end of the mine shaft entrance, and protective cylinders are symmetrically arranged on both sides of the lower end of the placement seat, and an electric telescopic rod is arranged inside the protective cylinder. The output end of the electric telescopic rod is connected to the side of the lower end of the limiting top seat, and a placement opening is opened in the middle of the limiting top seat, and a logging instrument body is arranged inside the placement opening. The lower end of the limiting top seat is symmetrically provided with connecting telescopic rods on both sides of the logging instrument body, and the lower end of the connecting telescopic rod is connected to the upper end of the protective seat, and the protective seat is sleeved on the outer side of the lower end of the logging instrument body.

[0008] Preferably, the placement seat is a circular structure, and ground nails are symmetrically arranged on both sides of the placement seat, and the ground nails are located outside the protective tube.

[0009] Preferably, a through hole is opened in the middle of the placement seat, and the center position of the through hole is in the same vertical plane as the center position of the mine wellhead and the center position of the placement opening.

[0010] Preferably, the position-limiting top seat forms a lifting structure with the placement seat through an electric telescopic rod.

[0011] Preferably, a rubber sleeve is provided between the middle of the protective seat and the outer side of the lower end of the logging instrument body, and the outer side of the protective seat fits with the inner side of the through hole. At the same time, the protective seat forms a lifting structure through the logging instrument body and the mine wellhead.

[0012] Preferably, guide rollers are obliquely and symmetrically provided on both sides of the lower end of the protective seat, and the guide rollers are in contact with the inner side of the mine shaft opening.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the safety protection device for the intrinsically safe resistivity logging instrument for mines is

[0014] In order to solve the problem that the existing logging instrument is manually placed vertically into the borehole when in use, and the measurement can be started when the logging instrument is stable, but when the logging instrument is placed inside the borehole, if it accidentally touches the inner wall of the wellbore, the device will be damaged, affecting the measurement results and increasing the maintenance cost, the present application uses a protective seat to protect the lower end of the logging instrument body, and then, with the use of an electric telescopic rod, a limit top seat and a connecting telescopic rod, the logging instrument body drives the protective seat to move synchronously downward into the mine wellhead, and then, under the guidance of the guide roller, the logging instrument body is always located in the center of the mine wellhead, thereby improving the protection effect of the logging instrument body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0018] Figure 4 It is a schematic diagram of the top structure of the utility model.

[0019] In the figure: 1. Mine wellhead; 2. Placement base; 3. Ground nail; 4. Protective tube; 5. Electric telescopic rod; 6. Limiting top seat; 7. Logging instrument body; 8. Connecting telescopic rod; 9. Protective base; 10. Guide roller. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a technical solution: a safety protection device for a mine intrinsically safe resistivity logging instrument, according to Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the placement seat 2 is arranged at the upper end of the mine wellhead 1, and the two sides of the lower end of the placement seat 2 are symmetrically provided with protective cylinders 4 on both sides of the mine wellhead 1. The placement seat 2 is a circular structure, and the two sides of the placement seat 2 are symmetrically provided with ground nails 3. At the same time, the ground nails 3 are located outside the protective cylinder 4. By inserting the ground nails 3, the placement seat 2 is fixed to the upper end of the mine wellhead 1, thereby improving the accuracy of the placement position of the logging instrument body 7 when working. A through hole is opened in the middle of the placement seat 2, and the center position of the through hole is aligned with the center position of the mine wellhead 1 and the center position of the placement opening. The protective tube 4 is placed in the same vertical plane. At the same time, an electric telescopic rod 5 is provided inside the protective tube 4. The output end of the electric telescopic rod 5 is connected to the side of the lower end of the limit top seat 6. The limit top seat 6 forms a lifting structure with the placement seat 2 through the electric telescopic rod 5. The electric telescopic rod 5 drives the limit top seat 6 to move down, which is convenient for adjusting according to the depth of the logging instrument body 7 entering the inside of the mine wellhead 1, so that the logging instrument body 7 can measure and detect the deeper depth inside the mine wellhead 1, and a placement opening is opened in the middle of the limit top seat 6. At the same time, the placement opening is opened. The bottom of the well logging instrument body 7 is provided with a limit top seat 6. The lower end of the limit top seat 6 is located on both sides of the well logging instrument body 7 and is symmetrically provided with connecting telescopic rods 8. The lower end of the connecting telescopic rods 8 is connected to the upper end of the protective seat 9. By connecting the telescopic rods 8 and the protective seat 9, the protective seat 9 is connected so that when the protective seat 9 is driven by the well logging instrument body 7 to move downward, the stability of the movement of the protective seat 9 is improved. At the same time, the connecting telescopic rods 8 protect the side of the well logging instrument body 7. At the same time, the protective seat 9 is sleeved on the outer side of the lower end of the well logging instrument body 7, and the middle of the inner part of the protective seat 9 is connected to the outer side of the lower end of the well logging instrument body 7. A rubber sleeve is arranged in between, and the outer side of the protective seat 9 is fitted with the inner side of the through hole. At the same time, the protective seat 9 forms a lifting structure with the mine wellhead 1 through the logging instrument body 7. Guide rollers 10 are symmetrically arranged on both sides of the lower end of the protective seat 9. At the same time, the guide rollers 10 are fitted with the inner side of the mine wellhead 1. Through the guide rollers 10, the protective seat 9 has a certain degree of stability when entering the interior of the mine wellhead 1, so that the protective seat 9 with the logging instrument body 7 is always located in the middle of the mine wellhead 1, thereby improving the protection of the logging instrument body 7.

[0022] When the tool is in use, the placing seat 2 is placed at the upper end of the mine wellhead 1 so that the protective tube 4 is located in the placing groove set inside the ground at the side of the mine wellhead 1. The side of the placing seat 2 is connected to the ground by inserting the ground nail 3. Then the lower end of the logging instrument body 7 passes through the placing opening opened in the middle of the limiting top seat 6 and engages with the middle of the protective seat 9. Then the logging instrument body 7 is pushed down, so that the logging instrument body 7 drives the protective seat 9 to move from the placing seat 2 to the inside of the mine wellhead 1. At the same time, the guide roller 10 slides with the side of the inner side of the mine wellhead 1, and the protective seat 9 moves downward while pulling the connecting telescopic rod 8 to extend, thereby improving the stability of the protective seat 9 lifting and lowering. When the connecting telescopic rod 8 cannot continue to extend and the logging instrument body 7 needs to continue to move downward, the electric telescopic rod 5 is started to drive the limiting top seat 6 to move downward, so that the logging instrument body 7 can continue to move deeper into the mine wellhead 1, thereby improving the protection during use and the depth of detection of the logging instrument body 7 can be adjusted, thereby improving the practicality of use.

[0023] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the protection content of the present invention.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A safety protection device for a mine intrinsically safe resistivity logging instrument, comprising a placement seat (2), characterized in that: The placement seat (2) is arranged at the upper end of the mine wellhead (1), and protective tubes (4) are symmetrically arranged on both sides of the lower end of the placement seat (2) at the mine wellhead (1), and an electric telescopic rod (5) is arranged inside the protective tube (4), the output end of the electric telescopic rod (5) is connected to the side of the lower end of the limiting top seat (6), and a placement opening is opened in the middle of the limiting top seat (6), and a logging instrument body (7) is arranged inside the placement opening, and the lower end of the limiting top seat (6) is symmetrically arranged on both sides of the logging instrument body (7), and the lower end of the connecting telescopic rod (8) is connected to the upper end of the protective seat (9), and the protective seat (9) is sleeved on the outer side of the lower end of the logging instrument body (7).

2. The safety protection device for a mine-used intrinsically safe resistivity logging tool according to claim 1, characterized in that: The placement seat (2) is a circular structure, and ground nails (3) are symmetrically arranged on both sides of the placement seat (2), and the ground nails (3) are located outside the protective tube (4).

3. The safety protection device for a mine-used intrinsically safe resistivity logging tool according to claim 1, characterized in that: A through hole is provided in the middle of the placement seat (2), and the center position of the through hole is in the same vertical plane as the center position of the mine wellhead (1) and the center position of the placement opening.

4. The safety protection device for a mine intrinsically safe resistivity logging tool according to claim 1, characterized in that: The position-limiting top seat (6) forms a lifting structure with the placement seat (2) through the electric telescopic rod (5).

5. The safety protection device for a mine intrinsically safe resistivity logging tool according to claim 1, characterized in that: A rubber sleeve is provided between the middle of the interior of the protective seat (9) and the outer side of the lower end of the logging instrument body (7), and the outer side of the protective seat (9) is fitted with the inner side of the through hole. At the same time, the protective seat (9) forms a lifting structure with the logging instrument body (7) and the mine wellhead (1).

6. The safety protection device for a mine-used intrinsically safe resistivity logging tool according to claim 1, characterized in that: Guide rollers (10) are obliquely and symmetrically arranged on both sides of the lower end of the protection seat (9), and the guide rollers (10) are in contact with the inner side of the mine wellhead (1).

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