Auxiliary centralizing device for geophysical well logging instrument

Abstract

A kind of geophysical well logging instrument is with auxiliary righting device, including circular fixed plate, arc clamping plate, support slide bar, wedge-shaped sliding block, vertical slide bar, threaded rotating rod, fixed buckle, positioning sliding sleeve, strip clamping plate, the circular fixed plate is connected ground by multiple pins, circular fixed plate upper portion has fixed plate upper pipe, arc clamping plate is placed in fixed plate upper pipe, three arc clamping plates are evenly distributed in fixed plate upper pipe interior, arc clamping plate side surface is connected support slide bar, fixed plate upper pipe side surface has multiple upper pipe side pipes, support slide bar is adapted to upper pipe side pipe, support slide bar is inserted into upper pipe side pipe, support slide bar slides in upper pipe side pipe, support slide bar is connected wedge-shaped sliding block, positioning sliding sleeve is sleeved on the outside of fixed plate upper pipe, the inner surface of positioning sliding sleeve is attached to the outside of wedge-shaped sliding block.

Description

Technical Field

[0001] This utility model relates to the field of geophysical well detection instruments, and in particular to an auxiliary straightening device for geophysical well detection instruments. Background Technology

[0002] An existing patent (publication number: CN213869764U) discloses a centering device for a geological exploration well tool, comprising a base plate and a top plate. Four sets of first guide columns and four sets of second guide columns are fixed in a ring between the base plate and the top plate. Four first lead screws and four second lead screws are fixed in a ring on the upper surface of the base plate. Four positioning components and clamping components are fixed between the base plate and the top plate. A housing is fixed to the upper surface of the top plate, and a top cover is fixed to the top of the housing. A first motor and a second motor are fixedly mounted on the lower surface of the top plate via brackets. However, this device cannot control multiple clamping plates to clamp and fix the internal exploration well casing in a single operation. Furthermore, the roller structure cannot guarantee that the well casing will be clamped in a specific position and moved. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of existing technologies by providing a clamping structure that uses three arc-shaped clamping plate components to move synchronously towards the center. This structure can flexibly adapt to oil well pipes of different diameters, eliminating the need to replace dedicated clamping devices for different specifications of well pipes. It meets the diverse well pipe fixing needs in oil well exploration, and improves the versatility and applicability of the exploration instrument. This is an auxiliary straightening device for geophysical exploration well instruments.

[0004] The objective of this utility model is achieved through the following technical solution: An auxiliary straightening device for a geophysical well detection tool includes a circular fixed plate, an arc-shaped clamping plate, a supporting slide rod, a wedge-shaped slider, a vertical slide rod, a threaded rotating rod, a fixing buckle plate, a positioning sleeve, and a strip-shaped clamping plate. The circular fixed plate is connected to the ground by multiple pins. The upper part of the circular fixed plate has a fixed upper tube. The arc-shaped clamping plate is placed inside the fixed upper tube. Three arc-shaped clamping plates are evenly distributed inside the fixed upper tube. The supporting slide rod is connected to the side of the arc-shaped clamping plate. The side of the fixed upper tube has multiple upper tube side tubes. The supporting slide rod is adapted to the upper tube side tubes. The supporting slide rod is inserted into the upper tube side tubes and slides inside the upper tube side tubes. The supporting slide rod is connected to the wedge-shaped slider. The positioning sleeve is sleeved on the outside of the fixed upper tube, and the inner surface of the positioning sleeve is in contact with the outer surface of the wedge-shaped slider.

[0005] The wedge-shaped slider has slider side arc plates at both ends, and a strip-shaped card plate connects to the inner side of the positioning sleeve. The strip-shaped card plate has an inner sliding groove. The slider side arc plates are adapted to the inner sliding groove. The slider side arc plates are inserted into the inner sliding groove. The slider side arc plates slide in the inner sliding groove. The side of the slider side arc plates fits against the wedge-shaped slider. The slider side arc plates are symmetrically arranged on both sides of the wedge-shaped slider.

[0006] The positioning slide sleeve has a first fixing block on the outside, and a circular fixing plate is connected to the lower part of the vertical slide rod. The vertical slide rod is adapted to the first fixing block, and the vertical slide rod is inserted into the first fixing block. The vertical slide rod slides within the first fixing block, and a set of vertical slide rods are distributed on the outside of the positioning slide sleeve. Beneficial effects

[0007] 1. In this utility model, when the device is in use, a circular fixing plate is installed and fixed at the wellhead with multiple pins. A support slide rod passes through the upper pipe side tube and connects to the arc-shaped clamping plate. The support slide rod supports the arc-shaped clamping plate through the upper pipe side tube, so that the arc-shaped clamping plate is placed inside the upper pipe of the fixing plate. The position of the arc-shaped clamping plate inside the upper pipe of the fixing plate can be controlled by sliding the support slide rod. The positioning slide sleeve is fitted on the outside of the upper pipe of the fixing plate. The outside of the wedge-shaped slider is in contact with the inside of the positioning slide sleeve. Through the inclined contact surfaces of the two, the positioning slide sleeve pushes the wedge-shaped slider to move when it moves downward, so that the three arc-shaped clamping plates move centripetally at the same time. A strip-shaped clamping plate is installed and fixed inside the positioning slide sleeve. A vertical slide rod is inserted into the inner groove of the clamping plate. The strip-shaped clamping plate keeps the outer side of the wedge-shaped slider in close contact with the inner side of the positioning slide sleeve, preventing the wedge-shaped slider from disconnecting from the inner side of the positioning slide sleeve and ensuring the synchronous movement of the three arc-shaped clamping plates.

[0008] 2. In this utility model, the vertical sliding rod is installed and fixed on a circular fixed plate. The vertical sliding rod passes through the first fixed block. A set of vertical sliding rods laterally limits the positioning sleeve, preventing the positioning sleeve from shifting laterally and causing the center of the three arc-shaped clamping plates to deviate. The fixing plate is sleeved on the lower plate of the rotating rod and is fixed on the circular fixed plate, ensuring that the lower surface of the lower plate of the rotating rod is always in contact with the circular fixed plate, thereby limiting the threaded rotating rod. The threaded rotating rod passes through the second fixed block. The rotation of the threaded rotating rod drives the positioning sleeve to move up and down, which in turn drives the three arc-shaped clamping plates to clamp the well pipe passing through the pipe on the fixed plate, ensuring that the device can clamp well pipes of different diameters. Through the clamping structure in which the three arc-shaped clamping plate components move synchronously towards the center, it can flexibly adapt to oil well pipes of different diameters, eliminating the need to replace special clamping devices for different specifications of well pipes, meeting the diverse well pipe fixing needs in oil well exploration, and improving the versatility and applicability of the detector. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the auxiliary straightening device for a geophysical well detection instrument according to the present invention.

[0010] Figure 2 This is a side sectional view of an auxiliary straightening device for a geophysical well detection tool according to the present invention.

[0011] Figure 3 This is a top sectional view of an auxiliary straightening device for a geophysical well detection tool according to the present invention.

[0012] Figure 4This is a schematic diagram of the circular fixing plate structure described in this utility model.

[0013] Figure 5 This is a schematic diagram of the positioning sliding sleeve structure described in this utility model. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Example 1: An auxiliary straightening device for a geophysical well detection tool includes a circular fixed plate 01, an arc-shaped clamping plate 03, a supporting slide rod 04, a wedge-shaped slider 06, a vertical slide rod 07, a threaded rotating rod 08, a fixing buckle plate 09, a positioning sliding sleeve 12, and a strip-shaped clamping plate 13. The circular fixed plate 01 is connected to the ground by multiple pins. In use, the circular fixed plate 01 is fixed at the wellhead by multiple pins. The upper part of the circular fixed plate 01 has a fixed upper tube 02. The arc-shaped clamping plate 03 is placed inside the fixed upper tube 02. The three arc-shaped clamping plates 03 are evenly distributed inside the fixed upper tube 02. The side of the arc-shaped clamping plate 03 is connected to the supporting slide rod 04. The side of the fixed upper tube 02 has multiple upper tube side tubes 05. The supporting slide rod 04 is adapted to the upper tube side tubes 05 and is inserted into the upper tube side tubes 05. Rod 04 slides inside the upper tube side tube 05. Supporting slide rod 04 passes through the upper tube side tube 05 and connects to the arc-shaped clamping plate 03. Supporting slide rod 04 supports the arc-shaped clamping plate 03 through the upper tube side tube 05, so that the arc-shaped clamping plate 03 is placed inside the fixed upper tube 02. The position of the arc-shaped clamping plate 03 inside the fixed upper tube 02 can be controlled by sliding support slide rod 04. Supporting slide rod 04 connects to wedge-shaped slider 06. Positioning sleeve 12 is fitted on the outside of the fixed upper tube 02. The inner surface of positioning sleeve 12 is in contact with the outer surface of wedge-shaped slider 06. Positioning sleeve 12 is fitted on the outside of the fixed upper tube 02. The outer surface of wedge-shaped slider 06 is in contact with the inner surface of positioning sleeve 12. Through the inclined contact surfaces of the two, positioning sleeve 12 pushes wedge-shaped slider 06 to move when it moves downward, so that the three arc-shaped clamping plates 03 move centripetally at the same time.

[0015] Example 2: The wedge-shaped slider 06 of this utility model has slider side arc plates 17 at both ends, and a strip-shaped clamping plate 13 connected to the inner side of the positioning sleeve 12. The strip-shaped clamping plate 13 is installed and fixed inside the positioning sleeve 12. The strip-shaped clamping plate 13 has an inner sliding groove 14. The slider side arc plates 17 are adapted to the inner sliding groove 14. The slider side arc plates 17 are inserted into the inner sliding groove 14 and slide within the inner sliding groove 14. The strip-shaped clamping plate 13 ensures that the outer side of the wedge-shaped slider 06 is always in close contact with the inner side of the positioning sleeve 12, preventing the wedge-shaped slider 06 from disconnecting from the inner side of the positioning sleeve 12 and ensuring the synchronous movement of the three arc-shaped clamping plates 03. The side of the slider side arc plates 17 is in contact with the wedge-shaped slider 06, and the slider side arc plates 17 are symmetrically arranged on both sides of the wedge-shaped slider 06.

[0016] Example 3: The positioning slide sleeve 12 of this utility model has a first fixing block 15 on its outer side. The lower part of the vertical slide rod 07 is connected to the circular fixing plate 01. The vertical slide rod 07 is installed and fixed on the circular fixing plate 01. The vertical slide rod 07 is adapted to the first fixing block 15. The vertical slide rod 07 is inserted into the first fixing block 15 and slides within the first fixing block 15. A set of vertical slide rods 07 limits the lateral movement of the positioning slide sleeve 12 to prevent the center of the three arc-shaped clamps 03 from shifting due to lateral movement of the positioning slide sleeve 12. A set of vertical slide rods 07 is distributed on the outer side of the positioning slide sleeve 12.

[0017] Example 4: The positioning sleeve 12 of this utility model has a second fixing block 16 on its outer side. A threaded rotating rod 08 is adapted to the second fixing block 16 and passes through the second fixing block 16. The threaded rotating rod 08 rotates within the second fixing block 16. A handle 11 is connected to the upper part of the threaded rotating rod 08, and a rotating rod lower plate 10 is provided at the lower part of the threaded rotating rod 08. A circular fixing plate 01 is connected to the lower part of the fixing plate 09. The rotating rod lower plate 10 is adapted to the fixing plate 09 and is inserted into the fixing plate 09. The rotating rod lower plate 10 rotates within the fixing plate 09. The rotating rod lower plate 10 is shown in the table below. The threaded rotating rod 08 is attached to the circular fixed plate 01. The fixed plate 09 passes through the fixed buckle plate 09, which is fitted onto the lower plate 10 of the rotating rod. The fixed plate 09 is fixed to the circular fixed plate 01, ensuring that the lower surface of the lower plate 10 is always in contact with the circular fixed plate 01, thus limiting the position of the threaded rotating rod 08. The threaded rotating rod 08 passes through the second fixed block 16. The rotation of the threaded rotating rod 08 drives the positioning sliding sleeve 12 to move up and down, thereby causing the three arc-shaped clamping plates 03 to clamp the well pipe passing through the upper tube 02 of the fixed plate. This ensures that the device can clamp well pipes of different diameters. Through the clamping structure where the three arc-shaped clamping plates 03 move synchronously towards the center, it can flexibly adapt to oil well pipes of different diameters, eliminating the need to replace special clamping devices for different specifications of well pipes. This meets the diverse well pipe fixing needs in oil well exploration, improving the versatility and applicability of the detector.

[0018] Example 5: The installation steps of this utility model are as follows: First, connect the support slide rod 04 to the wedge-shaped slider 06. Then, pass the support slide rod 04 through the upper tube side tube 05 and connect it to the arc-shaped clamping plate 03. Place the positioning slide sleeve 12 on the outside of the upper tube 02 of the fixing plate. Insert the slider side arc plate 17 into the inner slide groove 14 of the card. Connect the strip-shaped clamping plate 13 to the positioning slide sleeve 12. Pass the vertical slide rod 07 through the first fixing block 15 and connect it to the circular fixing plate 01. Place the fixing buckle plate 09 on the outside of the lower plate 10 of the rotating rod. Pass the threaded rotating rod 08 through the second fixing block 16 and connect the lower part of the fixing buckle plate 09 to the circular fixing plate 01. Connect the upper part of the threaded rotating rod 08 to the handle 11.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An auxiliary centering device for a geophysical well detection tool, characterized in that: The system includes a circular fixing plate (01), an arc-shaped clamping plate (03), a supporting slide rod (04), a wedge-shaped slider (06), a vertical slide rod (07), a threaded rotating rod (08), a fixing buckle plate (09), a positioning slide sleeve (12), and a strip-shaped clamping plate (13). The circular fixing plate (01) is connected to the ground by multiple pins. The upper part of the circular fixing plate (01) has a fixing upper tube (02). The arc-shaped clamping plate (03) is placed inside the fixing upper tube (02). The three arc-shaped clamping plates (03) are evenly distributed inside the fixing upper tube (02). The distribution is such that the side of the arc-shaped clamp (03) is connected to the support slide rod (04), the side of the fixed plate tube (02) has multiple upper tube side tubes (05), the support slide rod (04) is adapted to the upper tube side tube (05), the support slide rod (04) is inserted into the upper tube side tube (05), the support slide rod (04) slides in the upper tube side tube (05), the support slide rod (04) is connected to the wedge slider (06), the positioning sleeve (12) is sleeved on the outside of the fixed plate tube (02), and the inner surface of the positioning sleeve (12) is in contact with the outer surface of the wedge slider (06).

2. The auxiliary centering device for a geophysical well-detecting instrument according to claim 1, characterized in that: The wedge-shaped slider (06) has vertical slide rods (07) at both ends. The strip plate (13) is connected to the inner side of the positioning slide sleeve (12). The strip plate (13) has an inner slide groove (14). The slider side arc plate (17) is adapted to the inner slide groove (14). The slider side arc plate (17) is inserted into the inner slide groove (14). The slider side arc plate (17) slides in the inner slide groove (14). The side of the slider side arc plate (17) is in contact with the wedge-shaped slider (06). The slider side arc plate (17) is symmetrically arranged on both sides of the wedge-shaped slider (06).

3. The auxiliary centering device for a geophysical well-detecting tool according to claim 2, characterized in that: The positioning slide sleeve (12) has a first fixing block (15) on the outside. The lower part of the vertical slide rod (07) is connected to a circular fixing plate (01). The vertical slide rod (07) is adapted to the first fixing block (15). The vertical slide rod (07) is inserted into the first fixing block (15). The vertical slide rod (07) slides in the first fixing block (15). A set of vertical slide rods (07) are distributed on the outside of the positioning slide sleeve (12).

4. The auxiliary centering device for a geophysical well-detecting tool according to claim 3, characterized in that: The positioning sleeve (12) has a second fixing block (16) on its outer side. The threaded rotating rod (08) is adapted to the second fixing block (16). The threaded rotating rod (08) passes through the second fixing block (16) and rotates inside the second fixing block (16). The upper part of the threaded rotating rod (08) is connected to the handle (11), and the lower part of the threaded rotating rod (08) has a rotating rod lower plate (10). The lower part of the fixing buckle plate (09) is connected to the circular fixing plate (01).

5. The auxiliary centering device for a geophysical well detection tool according to claim 2, characterized in that: The rotating rod lower plate (10) is adapted to the fixed buckle plate (09). The rotating rod lower plate (10) is inserted into the fixed buckle plate (09). The rotating rod lower plate (10) rotates inside the fixed buckle plate (09). The lower surface of the rotating rod lower plate (10) is in contact with the circular fixed plate (01). The threaded rotating rod (08) passes through the fixed buckle plate (09).

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