Built-in signal connecting piece structure of logging-while-drilling instrument

Abstract

The invention discloses a built-in signal connecting piece structure of a logging-while-drilling instrument in the technical field of mechanical assembly, which comprises a connecting unit, a first connecting section with a threaded mechanism on the outer wall, a sealing section arranged at one end of the first connecting section, a stress releasing section arranged at the top end of the sealing section, and a second connecting section arranged at the top end of the stress releasing section, the limiting section is fixedly connected to the top end of the second connecting section. By means of the anti-falling unit capable of limiting and clamping the data line set penetrating through the connecting unit in a mechanical clamping mode in the connecting unit, a series of problems caused by accidental falling of the data line due to external reasons can be effectively prevented, smooth proceeding of well logging operation is guaranteed, and the well logging efficiency is improved. And the anti-falling unit is only started to perform anti-falling clamping when the line group falls, normal conveying of the data line group is not hindered when the data line group is conveyed and arranged, and the use flexibility is high.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical assembly, and in particular to a built-in signal connector structure of a logging while drilling instrument. Background Art

[0002] In logging instruments, effective connection of signal data lines is the premise and basis for the normal operation of the instrument. In order to ensure the effective and stable transmission of data signals, it is often necessary to embed the data signal lines in specially designed connecting nipples. Since the connecting nipples are used as connectors to connect different components, they are often subjected to certain tensile, compression, torsion, and even vibration fluctuation loads, which may cause the connecting nipples to fail. Erosion and stress fluctuations caused by poor sealing may also lead to fatigue fracture. The above reasons are all factors that cause the failure mode of the connecting nipples. At the same time, in logging operations, the connecting nipples not only play the role of mechanical connection, but also need to ensure the stability and safety of internal data lines (such as cables, optical fibers, etc.). If the data lines accidentally fall due to external reasons, it may cause signal interruption, data loss, or even damage the instrument, seriously affecting the smooth progress of logging operations. Summary of the invention

[0003] In view of the above problems existing in the existing signal connector structure of the logging while drilling instrument, the inventors propose a signal connector structure of the logging while drilling instrument to solve such problems.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a built-in signal connector structure of a logging while drilling instrument, comprising:

[0005] The connecting unit comprises a first connecting section with a threaded mechanism on the outer wall, a sealing section arranged at one end of the first connecting section, a stress release section arranged at the top of the sealing section, a second connecting section arranged at the top of the stress release section, and a limiting section fixedly connected to the top of the second connecting section, wherein the first connecting section, the sealing section, the stress release section, the second connecting section and the limiting section are interconnected;

[0006] The anti-fall unit includes two groups of abutment parts symmetrically arranged in the limiting section, fixed parts symmetrically arranged at both ends of each group of abutment parts, a limiting part vertically arranged between the two groups of abutment parts, and the two ends of the limiting part are respectively inserted into two groups of fixed parts belonging to different groups of abutment parts, a transmission part located on the inner side of the fixed part, a conversion part arranged inside the transmission part, and the outer end of the abutment part passes through the conversion part, the transmission part and the fixed part in rotational connection outward in turn, and a driven part rotatably connected to the front side of the fixed part, and the inner side of the driven part is meshed with the outer side of the transmission part, and the outer side is meshed with the outer end of the limiting part.

[0007] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, wherein: a plurality of groups of sealing grooves are provided on the sealing section, and a sealing ring is correspondingly installed in each group of sealing grooves, and an arc-shaped stress relief groove is provided between the stress release section and the stress release section, and the arc depth is 5% to 10% of the wall thickness of the stress relief groove.

[0008] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, a bolt cap is provided at the top of the limiting section, an installation groove is opened inside the limiting section, and the anti-fall unit is installed as a whole in the installation groove of the limiting section.

[0009] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, the abutment component includes a roller with a shuttle-shaped structure, a fixed shaft symmetrically arranged at the axial position of both ends of the roller, and the fixed shaft passes through the fixed component outward, a limiting rod transversely arranged on the fixed shaft, and the two ends of the limiting rod abut against the inner wall of the conversion component, two groups of pressing plates arranged on the outside of both ends of the limiting rod, and the inner sides of the two groups of pressing plates are clamped on the outside of the conversion component, and a limiting plate arranged at the outer end of the fixed shaft, and the fixed shaft is connected to the side of the fixed component through the limiting plate for limited rotation.

[0010] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, the fixing component includes a fixing frame arranged at the outer end of the abutting component, a mounting groove opened on the inner side of the fixing frame, and the transmission component is installed in the mounting groove, a plurality of groups of limit buttons distributed around the inner wall of the mounting groove, a limit slide bar arranged on the outer side of the fixing frame, and the limit slide bar extends outwardly through the outer wall of the limit section, a first mounting shaft arranged at the upper position on the inner side of the fixing frame, and the outer end of the limit component is inserted into the first mounting shaft, and a second mounting shaft arranged at the lower position on the inner side of the fixing frame, and the driven component is rotatably connected to the second mounting shaft.

[0011] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, the limiting component includes a main clamping block located between two groups of fixed components, two groups of linkage components inserted at both ends of the main clamping block, and the outer end of each group of linkage components is limitedly inserted on the first mounting shaft on the inner side of the fixed component and is rotatably connected, a retraction spring is arranged between the retraction spring and the main clamping block, and the two ends of the retraction spring are respectively fixedly connected to the inner side of the retraction spring and the outer end of the main clamping block, a limiting tooth is provided on the outer wall of the main clamping block, and a storage groove is provided inside the main clamping block.

[0012] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, the retraction spring includes a sleeve rotatably inserted on the first mounting shaft, a secondary clamp fixedly connected to the side of the sleeve, and the center of the secondary clamp is located below the center of the sleeve, meshing teeth are annularly distributed on the outside of the sleeve, and the meshing teeth are engaged with the outside of the driven component, and a connecting rod with a hexagonal prism structure with a length of half that arranged on the side of the secondary clamp, and the connecting rod extends outward and is inserted into a receiving groove inside the main clamp.

[0013] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, the transmission component includes a mounting ring located in a mounting groove, a large bevel gear arranged on the outside of the mounting ring, and a portion of the linkage component is exposed outside the mounting groove and meshes with the side of the driven component, a limiting hole is equally divided and arranged on the outer extension of the mounting ring, and the end of the limiting button extends into the limiting hole, an inner groove is arranged on the inner side of the fixing frame, and the conversion component is located in the inner groove, and inner teeth are arranged on the outer edge of the inner ring of the inner groove.

[0014] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, the conversion component includes an annular block located in the inner groove, a special-shaped groove opened inside the annular block, and a limit rod is transversely arranged in the special-shaped groove, smooth groove surfaces and limit grooves are respectively opened on both sides of the interior of the special-shaped groove, and the two ends of the limit rod are respectively abutted against the smooth groove surface and the limit groove, and external teeth are fixedly arranged on the outer diameter of the annular block.

[0015] As a preferred solution of the built-in signal connector structure of the logging while drilling instrument described in the present invention, the driven component includes a driven gear rotatably connected to the second mounting shaft, and the driven gear is meshed with the meshing teeth, and a small gear is arranged on the outside of the driven gear, and the small gear is meshed with the large bevel gear.

[0016] Beneficial effects of the present invention:

[0017] 1. By providing a connection unit that can be safely and firmly connected to the outer sleeve, and designing a sealing groove on the sealing section of the connection unit, efficient sealing with the outer sleeve can be achieved, thereby providing a stable and reliable environment for the data line group passing through it, ensuring stable and smooth signal transmission, and providing a stress relief groove at the stress release section on the connection unit to relieve the stress distribution at the bottom of the thread teeth at the threaded connection section of the connection structure, reduce the maximum equivalent stress, and improve the safety and service life of the connector.

[0018] 2. By setting an anti-fall unit inside the connection unit, the anti-fall unit can limit the clamping of the data line group passing through it by mechanical clamping, thereby effectively preventing the data line from accidentally falling due to external reasons, resulting in signal interruption, data loss, and even damage to the instrument. The problem ensures the smooth progress of the logging operation. The anti-fall unit is only activated to prevent the line group from falling off when it falls, and will not hinder the normal transportation of the data line group during transportation and arrangement, and has strong flexibility in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 It is a structural schematic diagram of a signal connector structure connection unit built into a logging while drilling instrument of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the anti-fall unit of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0022] Figure 3 It is a structural top view of the anti-fall unit of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0023] Figure 4 It is a schematic diagram of the structural decomposition of the anti-fall unit of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the abutment component of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the limit component of the signal connector structure built into the logging while drilling instrument of the present invention.

[0026] Figure 7 The figure is a schematic diagram of the internal structure of the limit component of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the transmission components of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0028] Fig. 9 It is a schematic diagram of the structure of the transmission components and the connection positions of the transmission components of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0029] Fig.10It is a structural schematic diagram of the initial state of the anti-fall unit of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0030] Fig.11 It is a structural schematic diagram of the working state of the anti-fall unit of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0031] Fig.12 It is a schematic diagram of the anti-falling state of the anti-falling unit of the built-in signal connector structure of the logging while drilling instrument of the present invention.

[0032] Figure numerals: 100, connecting unit; 101, first connecting section; 102, sealing section; 102a, sealing groove; 103, stress release section; 103a, stress relief groove; 104, second connecting section; 105, limiting section; 105a, bolt cap; 200, anti-falling unit; 201, abutting component; 201a, roller; 201b, fixed axis; 201c, limiting rod; 201d, pressing sheet; 201e, limiting sheet; 202, fixing component; 202a, fixing frame; 202b, mounting groove; 202c, limiting button; 202d, limiting slide bar; 202e, first mounting axis; 202f, second mounting axis; 203, limiting 1. Positioning component; 203a, main clamping block; 203b, linkage component; 203c, retracting spring; 203e, limiting teeth; 203f, receiving groove; 203g, bushing; 203h, auxiliary clamping block; 203i, meshing teeth; 203j, connecting rod; 204, transmission component; 204a, mounting ring; 204b, large bevel gear; 204c, limiting hole; 204d, inner groove; 204e, inner teeth; 205, conversion component; 205a, annular block; 205b, special-shaped groove; 205c, smooth groove surface; 205d, limiting groove; 205e, outer teeth; 206, driven component; 206a, driven gear; 206b, small gear. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Example

[0036] Reference Figures 1 to 12 , is an embodiment of the present invention, comprising a built-in signal connector structure of a logging while drilling instrument, comprising,

[0037] The connection unit 100 includes a first connection section 101 with a threaded mechanism on the outer wall, a sealing section 102 arranged at one end of the first connection section 101, a stress release section 103 arranged at the top of the sealing section 102, a second connection section 104 arranged at the top of the stress release section 103, and a limiting section 105 fixedly connected to the top of the second connection section 104, and the first connection section 101, the sealing section 102, the stress release section 103, the second connection section 104 and the limiting section 105 are interconnected; the first connection section 101 and the second connection section 104 are both cylindrical external threads with different thread diameters but the same thread profile and pitch, and the five are interconnected to form a hollow structure inside the connection unit 100, and the hollow structure can be used for data signal lines to pass through, and the connector structure can protect the internal data signal lines to avoid damage and rupture caused by the data signal lines contacting the formation on the wall of the well body during the logging while drilling process, thereby ensuring the integrity and accuracy of data transmission during the logging while drilling process.

[0038] The anti-fall unit 200 includes two groups of abutment parts 201 symmetrically arranged in the limiting section 105, fixed parts 202 symmetrically arranged at both ends of each group of abutment parts 201, a limiting part 203 vertically arranged between the two groups of abutment parts 201, and the two ends of the limiting part 203 are respectively inserted into two groups of fixed parts 202 belonging to different groups of abutment parts 201, a transmission part 204 located on the inner side of the fixed part 202, a conversion part 205 arranged inside the transmission part 204, and the outer end of the abutment part 201 passes through the conversion part 205 outward in sequence, the transmission part 204 is rotatably connected to the fixed part 202, and a driven part 206 rotatably connected to the front side of the fixed part 202, and the inner side of the driven part 206 is meshed with the outer side of the transmission part 204, and the outer side is meshed with the outer end of the limiting part 203.

[0039] Among them, combined Figure 1 A plurality of sealing grooves 102a are provided on the sealing section 102, and a sealing ring is installed in each sealing groove 102a. Arc-shaped stress relief grooves 103a are provided between the stress release sections 103 and 103, and the depth of the arc is 5% to 10% of the wall thickness of the stress relief groove 103a.

[0040] A bolt cap 105 a is disposed at the top of the limiting section 105 , a mounting groove is provided inside the limiting section 105 , and the anti-falling unit 200 is integrally mounted in the mounting groove of the limiting section 105 .

[0041] During use, combine Figure 1By providing a connection unit 100 that can be safely and firmly connected to the outer sleeve, and designing a sealing groove 102a on the sealing section 102 of the connection unit 100, and installing a sealing ring in the sealing groove 102a, efficient sealing with the outer sleeve can be achieved, thereby providing a stable and reliable environment for the data line group passing through it, ensuring stable and smooth signal transmission, and providing a stress relief groove 103a at the stress release section 103 on the connection unit 100 to relieve the stress distribution at the bottom of the thread teeth at the threaded connection section of the connection structure, reduce the maximum equivalent stress, and improve the safety and service life of the connector.

[0042] Among them, combined Figure 4 The abutment component 201 includes a roller 201a of a shuttle structure, a fixed shaft 201b symmetrically arranged at the axial position of both ends of the roller 201a, and the fixed shaft 201b passes through the fixed component 202 outward, a limiting rod 201c is transversely arranged on the fixed shaft 201b, and both ends of the limiting rod 201c abut against the inner wall of the conversion component 205, two groups of pressing plates 201d are arranged on the outer sides of both ends of the limiting rod 201c, and the inner sides of the two groups of pressing plates 201d are clamped on the outer side of the conversion component 205, and a limiting plate 201e is arranged on the outer end of the fixed shaft 201b, and the fixed shaft 201b is connected to the side of the fixed component 202 for limited rotation through the limiting plate 201e.

[0043] During use, the fixed shafts 201b on both sides of the abutment component 201 are rotatably connected between the two groups of fixed components 202, and can perform circular rotation with the fixed shaft 201b as the axis between the two groups of fixed components 202, and the limiting piece 201e at the outermost end of the fixed shaft 201b can limit the abutment component 201 between the two groups of fixed components 202 to prevent accidental detachment. At the same time, the roller 201a of the shuttle-shaped structure can better and more fully contact the outer wall of the data line group. The roller 201a in contact with the outer wall of the data line group can roll with the pumping of the data line group. The two groups of pressing sheets 201d can tightly press and limit the conversion component 205 to the side of the roller 201a. When the external force is small, the conversion component 205 will always be attached to the side of the roller 201a, and the axis of the conversion component 205 coincides with the fixed shaft 201b.

[0044] Among them, combined Figure 5The fixing component 202 includes a fixing frame 202a arranged at the outer end of the abutting component 201, a mounting groove 202b opened on the inner side of the fixing frame 202a, and the transmission component 204 is installed in the mounting groove 202b, a plurality of groups of limiting buttons 202c distributed around the inner wall of the mounting groove 202b, a limiting slide bar 202d arranged on the outer side of the fixing frame 202a, and the limiting slide bar 202d extends outwardly through the outer wall of the limiting section 105, a first mounting shaft 202e arranged at the upper inner side of the fixing frame 202a, and the outer end of the limiting component 203 is inserted into the first mounting shaft 202e, and a second mounting shaft 202f arranged at the lower inner side of the fixing frame 202a, and the driven component 206 is rotatably connected to the second mounting shaft 202f.

[0045] During use, the installation groove 202b limits the transmission component 204 between the roller 201a and the fixed frame 202a, and it will not be separated from the two. One side of the installation groove 202b is an open structure, and the limiting slide bar 202d is connected with the limiting section 105, so that the fixing component 202 can move horizontally in the limiting section 105, but it will not be separated from the limiting section 105, and the fixing component 202 moves in a translational manner and will not change its own state.

[0046] Further, combined with Fig.10 The limit button 202c includes a spring and a latch. The spring elastically supports the latch to be inserted into the limit hole 204c and is limited by the limit hole 204c. However, the end structure of the latch is smooth and the depth of the latch inserted into the limit hole 204c is shallow. Therefore, when affected by a large external force, the latch will be separated from the limit hole 204c and will no longer be limited.

[0047] Among them, combined Figure 6 and Figure 7 The limiting component 203 includes a main clamping block 203a located between the two groups of fixed components 202, two groups of linkage components 203b inserted at both ends of the main clamping block 203a, and the outer end of each group of linkage components 203b is limited and inserted on the first mounting shaft 202e on the inner side of the fixed component 202 and is rotatably connected, a retraction spring 203c is arranged between the retraction spring 203c and the main clamping block 203a, and the two ends of the retraction spring 203c are respectively fixedly connected to the inner side of the retraction spring 203c and the outer end of the main clamping block 203a, a limiting tooth 203e is provided on the outer wall of the main clamping block 203a, and a storage groove 203f is provided inside the main clamping block 203a.

[0048] During use, the main clamp 203a and the two groups of linkage components 203b are connected together in a plug-in manner, so the three are limited by each other and can perform synchronous axial rotation. The retraction spring 203c located between the main clamp 203a and the linkage component 203b has an elastic direction of inward contraction, so the retraction spring 203c will always pull the linkage component 203b closer to the main clamp 203a, and the linkage component 203b is limited and plugged on the first installation axis 202e. Therefore, the inwardly contracted linkage component 203b will drive the fixed component 202 to move inward through the first installation axis 202e, and the inwardly approaching fixed component 202 will also synchronously drive the abutment component 201 to move. The linkage components 203b on both sides move synchronously through the retraction spring 203c, which can synchronously drive the abutment components 201 on both sides to move closer to each other, so that the two groups of abutment components 201 can be tightly abutted on both sides of the data line group to ensure the connectivity between the abutment component 201 and the data line group.

[0049] Further, combined with Figure 6 and Figure 7 The retraction spring 203c includes a sleeve 203g rotatably inserted on the first mounting shaft 202e, a secondary clamp 203h fixedly connected to the side of the sleeve 203g, and the center of the secondary clamp 203h is located below the center of the sleeve 203g, meshing teeth 203i are annularly distributed on the outside of the sleeve 203g, and the meshing teeth 203i are engaged with the outside of the driven component 206, and a connecting rod 203j with a hexagonal prism structure of half the length is arranged on the side of the secondary clamp 203h, and the connecting rod 203j extends outward and is inserted into the storage groove 203f inside the main clamp 203a.

[0050] During use, the special structure of the connecting rod 203j allows the linkage component 203b and the main clamping block 203a to limit each other, so that the two can rotate synchronously, and the two groups of linkage components 203b can be shrunk and fitted on both sides of the main clamping block 203a through the connecting rod 203j. The linkage component 203b can drive the linkage component 203b to rotate as a whole around the first installation axis 202e through the engagement of the meshing teeth 203i and the driven component 206. The eccentric arrangement of the auxiliary clamping block 203h and the linkage component 203b will cause the auxiliary clamping block 203h to rotate with the linkage component 203b, and the rotating auxiliary clamping block 203h will abut against the side of the data line group. The two groups of limiting components 203 move synchronously, and the data line group can be clamped and limited by their respective auxiliary clamping blocks 203h and the main clamping block 203a to clamp inward synchronously (such as Fig.12 As shown), the purpose of falling is achieved.

[0051] Among them, combined Figure 8 and Fig. 9The transmission component 204 includes a mounting ring 204a located in the mounting groove 202b, a large bevel gear 204b arranged on the outside of the mounting ring 204a, and a portion of the linkage component 203b is exposed outside the mounting groove 202b and meshes with the side of the driven component 206, and a limiting hole 204c is equally divided and arranged around the outer edge of the mounting ring 204a, and the end of the limiting button 202c extends into the limiting hole 204c, an inner groove 204d is arranged on the inner side of the fixing frame 202a, and the conversion component 205 is located in the inner groove 204d, and an inner tooth 204e is arranged on the outer extension of the inner circle of the inner groove 204d.

[0052] During use, the transmission component 204 is installed in the mounting groove 202b as a whole through the limit button 202c, and the fixed shaft 201b passes through the center of the transmission component 204, but the fixed shaft 201b cannot drive the transmission component 204 to rotate. Therefore, the transmission component 204 remains stationary in the mounting groove 202b under normal conditions, and the large bevel gear 204b is engaged with the small gear 206b, and is therefore driven by the driven component 206.

[0053] Among them, combined Fig.10 and Fig.11 The conversion component 205 includes an annular block 205a located in the inner groove 204d, a special-shaped groove 205b opened inside the annular block 205a, and a limiting rod 201c is horizontally arranged in the special-shaped groove 205b, and smooth groove surfaces 205c and limiting grooves 205d are respectively opened on both sides of the interior of the special-shaped groove 205b, and two ends of the limiting rod 201c are respectively abutted on the smooth groove surface 205c and the limiting groove 205d, and an external tooth 205e fixedly arranged on the outer diameter of the annular block 205a.

[0054] During use, the conversion component 205 is installed in the inner groove 204d as a whole through the limiting rod 201c and the pressing plate 201d, and the two ends of the limiting rod 201c are only slightly in contact with the smooth groove surface 205c and the limiting groove 205d in the special-shaped groove 205b, and this abutment relationship is relatively fragile. When subjected to excessive external force, the two ends of the limiting rod 201c will be misaligned with the inner wall of the special-shaped groove 205b. However, under normal conditions, the conversion component 205 will follow the fixed shaft 201b to rotate the bronze drum under the limitation of the limiting rod 201c, and its rotation axis coincides with the fixed shaft 201b. At this time, the outer teeth 205e will not be engaged with the inner teeth 204e, that is, the conversion component 205 has no connection relationship with the transmission component 204 (such as Fig.10 shown).

[0055] The driven component 206 includes a driven gear 206a rotatably connected to the second mounting shaft 202f, the driven gear 206a meshing with the meshing teeth 203i, and a pinion 206b disposed outside the driven gear 206a, the pinion 206b meshing with the large bevel gear 204b.

[0056] During use, the small gear 206b is driven by the large bevel gear 204b by meshing with the large bevel gear 204b, and the driven gear 206a meshes with the meshing tooth 203i. Therefore, when the transmission component 204 is rotatable, the large bevel gear 204b can drive the driven component 206 and the linkage component 203b to rotate synchronously, thereby driving the rotating limiting component 203 to achieve the limiting clamping action.

[0057] In summary, when the anti-falling unit 200 is used to prevent the data line group from falling, the data line group passes through the empty slot formed between the two groups of abutting components 201 and the two groups of limiting components 203. The two groups of limiting components 203 elastically retract through the retraction spring 203c, which will drive the two groups of abutting components 201 at both ends to move inward, thereby making the roller 201a on the abutting component 201 abut against the outer wall of the data line group. When the data line group falls, the sudden falling action of the data line group will generate a large downward pulling force, which will act on the roller 201a, causing the roller 201a to 1a speeds up, the accelerated roller 201a will synchronously drive the limit rod 201c through the fixed shaft 201b to drive the conversion component 205 to rotate faster. At this time, the speed of the limit rod 201c suddenly increases. Under the action of gravity and inertia, the abutment relationship between the limit rod 201c and the smooth groove surface 205c is broken. At this time, the conversion component 205 driven by the limit rod 201c will not be able to keep up with the rotation speed of the limit rod 201c, thereby causing the conversion component 205 to be misplaced, and the outer teeth 205e of the misplaced conversion component 205 will be stuck on the inner teeth 204e (such as Fig.11 As shown), at this time, the conversion component 205 and the transmission component 204 are mutually engaged, and as the limiting rod 201c continues to rotate, one end of the limiting rod 201c will move along the smooth groove surface 205c, so that the two ends of the limiting rod 201c are firmly abutted in the special-shaped groove 205b. At this time, the limiting rod 201c and the conversion component 205 are integrally engaged, the limiting rod 201c will drive the conversion component 205 to rotate, and the rotating conversion component 205 will drive the transmission component 204 to rotate. At this time, the transmission component 204 will synchronously drive the driven component 206 to force the limiting component 203 to rotate, and the rotating limiting component 203 will gradually approach the outer wall of the data line group, and the two groups of limiting components 203 will synchronously clamp the data line group from both sides (as shown in FIG. Fig.12 As shown), the data line group can be limited, thereby preventing the data line group from falling downward, thereby achieving the purpose of preventing falling;

[0058] During conventional transportation and laying of the data line group, the pumping speed of the data line group is even, and the rotation of the abutment component 201 will not be suddenly accelerated, so that the abutment component 201 can drive the anti-fall unit 200 as a whole to perform a limiting action, thereby not hindering the smooth progress of the laying work.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A built-in signal connector structure of a logging while drilling instrument, characterized in that: include, The connecting unit (100) comprises a first connecting section (101) with a threaded mechanism on its outer wall, a sealing section (102) arranged at one end of the first connecting section (101), a stress release section (103) arranged at the top of the sealing section (102), a second connecting section (104) arranged at the top of the stress release section (103), and a limiting section (105) fixedly connected to the top of the second connecting section (104), wherein the first connecting section (101), the sealing section (102), the stress release section (103), the second connecting section (104) and the limiting section (105) are interconnected internally; The anti-falling unit (200) comprises two groups of abutment components (201) symmetrically arranged in the limiting section (105), fixing components (202) symmetrically arranged at both ends of each group of abutment components (201), and a limiting component (203) vertically arranged between the two groups of abutment components (201), and the two ends of the limiting component (203) are respectively plugged into two groups of fixing components (202) belonging to different groups of abutment components (201), and a transmission part located inside the fixing component (202) A member (204), a conversion member (205) arranged inside the transmission member (204), wherein the outer end of the abutment member (201) passes through the conversion member (205) outwards, the transmission member (204) is rotationally connected to the fixed member (202), and a driven member (206) is rotationally connected to the front side of the fixed member (202), wherein the inner side of the driven member (206) is meshed with the outer side of the transmission member (204), and the outer side is meshed with the outer end of the limit member (203).

2. The built-in signal connector structure of the logging while drilling instrument according to claim 1, characterized in that: The sealing section (102) is provided with a plurality of sealing grooves (102a), and a sealing ring is correspondingly installed in each sealing groove (102a); arc-shaped stress relief grooves (103a) are provided between the stress release sections (103) and the stress release sections (103), and the arc depth is 5% to 10% of the wall thickness of the stress relief groove (103a).

3. The built-in signal connector structure of the logging while drilling instrument according to claim 1, characterized in that: A bolt cap (105a) is provided at the top end of the limiting section (105), a mounting groove is provided inside the limiting section (105), and the anti-falling unit (200) is integrally mounted in the mounting groove of the limiting section (105).

4. The built-in signal connector structure of the logging while drilling instrument according to claim 1, characterized in that: The abutting component (201) comprises a roller (201a) of a shuttle-shaped structure, a fixed shaft (201b) symmetrically arranged at the axial positions of the two ends of the roller (201a), and the fixed shaft (201b) passes through the fixed component (202) outwardly, a limiting rod (201c) arranged transversely on the fixed shaft (201b), and the two ends of the limiting rod (201c) abut against the inner wall of the conversion component (205), two groups of pressing plates (201d) arranged on the outer sides of the two ends of the limiting rod (201c), and the inner sides of the two groups of pressing plates (201d) are clamped on the outer side of the conversion component (205), and a limiting plate (201e) arranged at the outer end of the fixed shaft (201b), and the fixed shaft (201b) is connected to the side of the fixed component (202) through the limiting plate (201e) for limited rotation.

5. The built-in signal connector structure of the logging while drilling instrument according to claim 1, characterized in that: The fixing component (202) comprises a fixing frame (202a) arranged at the outer end of the abutting component (201), a mounting groove (202b) provided on the inner side of the fixing frame (202a), and a transmission component (204) is installed in the mounting groove (202b), a plurality of groups of limiting buttons (202c) distributed around the inner wall of the mounting groove (202b), a limiting slide bar (202d) arranged on the outer side of the fixing frame (202a), and the limiting slide bar (202d) extends outwardly through the outer wall of the limiting section (105), a first mounting shaft (202e) arranged at an upper position on the inner side of the fixing frame (202a), and the outer end of the limiting component (203) is plugged into the first mounting shaft (202e), and a second mounting shaft (202f) arranged at a lower position on the inner side of the fixing frame (202a), and the driven component (206) is rotatably connected to the second mounting shaft (202f).

6. The built-in signal connector structure of the logging while drilling instrument according to claim 5, characterized in that: The limiting component (203) comprises a main clamping block (203a) located between two groups of fixed components (202), two groups of linkage components (203b) inserted at both ends of the main clamping block (203a), and the outer end of each group of linkage components (203b) is limitedly inserted on the first installation shaft (202e) inside the fixed component (202) and is rotatably connected, a retractable spring (203c) is arranged between the retractable spring (203c) and the main clamping block (203a), and the two ends of the retractable spring (203c) are respectively fixedly connected to the inner side of the retractable spring (203c) and the outer end of the main clamping block (203a), a limiting tooth (203e) provided on the outer wall of the main clamping block (203a), and a storage groove (203f) provided inside the main clamping block (203a).

7. The built-in signal connector structure of the logging while drilling instrument according to claim 6, characterized in that: The retractable spring (203c) includes a sleeve (203g) rotatably plugged onto the first mounting shaft (202e), a secondary clamp (203h) fixedly connected to the side of the sleeve (203g), wherein the center of the secondary clamp (203h) is located below the center of the sleeve (203g), meshing teeth (203i) are annularly distributed on the outside of the sleeve (203g), and the meshing teeth (203i) mesh with the outside of the driven component (206), and a connecting rod (203j) with a hexagonal prism structure of half the length arranged on the side of the secondary clamp (203h), and the connecting rod (203j) extends outward and is plugged into a receiving groove (203f) inside the main clamp (203a).

8. The built-in signal connector structure of the logging while drilling instrument according to claim 7, characterized in that: The transmission component (204) comprises a mounting ring (204a) located in a mounting groove (202b), a large bevel gear (204b) arranged outside the mounting ring (204a), and a portion of the linkage component (203b) is exposed outside the mounting groove (202b) and meshes with the side surface of the driven component (206), a limiting hole (204c) arranged on the outer extension of the mounting ring (204a) and equally surrounded, and the end of the limiting button (202c) extends into the limiting hole (204c), an inner groove (204d) arranged on the inner side of the fixing frame (202a), and the conversion component (205) is located in the inner groove (204d), and inner teeth (204e) arranged on the outer extension of the inner circle of the inner groove (204d).

9. The built-in signal connector structure of the logging while drilling instrument according to claim 8, characterized in that: The conversion component (205) comprises an annular block (205a) located in the inner groove (204d), a special-shaped groove (205b) provided inside the annular block (205a), and a limit rod (201c) arranged transversely in the special-shaped groove (205b), smooth groove surfaces (205c) and limit grooves (205d) are respectively provided on both sides inside the special-shaped groove (205b), and two ends of the limit rod (201c) are respectively abutted against the smooth groove surfaces (205c) and the limit grooves (205d), and an external tooth (205e) fixedly arranged on the outer diameter of the annular block (205a).

10. The built-in signal connector structure of the logging while drilling instrument according to claim 9, characterized in that: The driven component (206) comprises a driven gear (206a) rotatably connected to the second mounting shaft (202f), the driven gear (206a) meshing with the meshing teeth (203i), and a small gear (206b) arranged outside the driven gear (206a), the small gear (206b) meshing with the large bevel gear (204b).

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